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<pre><code><span class="line" id="L1"><span class="tok-comment">//! This file is auto-generated by tools/update_cpu_features.zig.</span></span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L4"><span class="tok-kw">const</span> CpuFeature = std.Target.Cpu.Feature;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> CpuModel = std.Target.Cpu.Model;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Feature = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L8"> @"16_bit_insts",</span>
<span class="line" id="L9"> a16,</span>
<span class="line" id="L10"> add_no_carry_insts,</span>
<span class="line" id="L11"> aperture_regs,</span>
<span class="line" id="L12"> architected_flat_scratch,</span>
<span class="line" id="L13"> atomic_fadd_no_rtn_insts,</span>
<span class="line" id="L14"> atomic_fadd_rtn_insts,</span>
<span class="line" id="L15"> atomic_pk_fadd_no_rtn_insts,</span>
<span class="line" id="L16"> auto_waitcnt_before_barrier,</span>
<span class="line" id="L17"> back_off_barrier,</span>
<span class="line" id="L18"> ci_insts,</span>
<span class="line" id="L19"> cumode,</span>
<span class="line" id="L20"> dl_insts,</span>
<span class="line" id="L21"> dot1_insts,</span>
<span class="line" id="L22"> dot2_insts,</span>
<span class="line" id="L23"> dot3_insts,</span>
<span class="line" id="L24"> dot4_insts,</span>
<span class="line" id="L25"> dot5_insts,</span>
<span class="line" id="L26"> dot6_insts,</span>
<span class="line" id="L27"> dot7_insts,</span>
<span class="line" id="L28"> dot8_insts,</span>
<span class="line" id="L29"> dot9_insts,</span>
<span class="line" id="L30"> dpp,</span>
<span class="line" id="L31"> dpp8,</span>
<span class="line" id="L32"> dpp_64bit,</span>
<span class="line" id="L33"> ds128,</span>
<span class="line" id="L34"> ds_src2_insts,</span>
<span class="line" id="L35"> extended_image_insts,</span>
<span class="line" id="L36"> fast_denormal_f32,</span>
<span class="line" id="L37"> fast_fmaf,</span>
<span class="line" id="L38"> flat_address_space,</span>
<span class="line" id="L39"> flat_atomic_fadd_f32_inst,</span>
<span class="line" id="L40"> flat_for_global,</span>
<span class="line" id="L41"> flat_global_insts,</span>
<span class="line" id="L42"> flat_inst_offsets,</span>
<span class="line" id="L43"> flat_scratch,</span>
<span class="line" id="L44"> flat_scratch_insts,</span>
<span class="line" id="L45"> flat_segment_offset_bug,</span>
<span class="line" id="L46"> fma_mix_insts,</span>
<span class="line" id="L47"> fmacf64_inst,</span>
<span class="line" id="L48"> fmaf,</span>
<span class="line" id="L49"> fp64,</span>
<span class="line" id="L50"> fp8_insts,</span>
<span class="line" id="L51"> full_rate_64_ops,</span>
<span class="line" id="L52"> g16,</span>
<span class="line" id="L53"> gcn3_encoding,</span>
<span class="line" id="L54"> get_wave_id_inst,</span>
<span class="line" id="L55"> gfx10,</span>
<span class="line" id="L56"> gfx10_3_insts,</span>
<span class="line" id="L57"> gfx10_a_encoding,</span>
<span class="line" id="L58"> gfx10_b_encoding,</span>
<span class="line" id="L59"> gfx10_insts,</span>
<span class="line" id="L60"> gfx11,</span>
<span class="line" id="L61"> gfx11_full_vgprs,</span>
<span class="line" id="L62"> gfx11_insts,</span>
<span class="line" id="L63"> gfx7_gfx8_gfx9_insts,</span>
<span class="line" id="L64"> gfx8_insts,</span>
<span class="line" id="L65"> gfx9,</span>
<span class="line" id="L66"> gfx90a_insts,</span>
<span class="line" id="L67"> gfx940_insts,</span>
<span class="line" id="L68"> gfx9_insts,</span>
<span class="line" id="L69"> half_rate_64_ops,</span>
<span class="line" id="L70"> image_gather4_d16_bug,</span>
<span class="line" id="L71"> image_insts,</span>
<span class="line" id="L72"> image_store_d16_bug,</span>
<span class="line" id="L73"> inst_fwd_prefetch_bug,</span>
<span class="line" id="L74"> int_clamp_insts,</span>
<span class="line" id="L75"> inv_2pi_inline_imm,</span>
<span class="line" id="L76"> lds_branch_vmem_war_hazard,</span>
<span class="line" id="L77"> lds_misaligned_bug,</span>
<span class="line" id="L78"> ldsbankcount16,</span>
<span class="line" id="L79"> ldsbankcount32,</span>
<span class="line" id="L80"> load_store_opt,</span>
<span class="line" id="L81"> localmemorysize32768,</span>
<span class="line" id="L82"> localmemorysize65536,</span>
<span class="line" id="L83"> mad_intra_fwd_bug,</span>
<span class="line" id="L84"> mad_mac_f32_insts,</span>
<span class="line" id="L85"> mad_mix_insts,</span>
<span class="line" id="L86"> mai_insts,</span>
<span class="line" id="L87"> max_private_element_size_16,</span>
<span class="line" id="L88"> max_private_element_size_4,</span>
<span class="line" id="L89"> max_private_element_size_8,</span>
<span class="line" id="L90"> mfma_inline_literal_bug,</span>
<span class="line" id="L91"> mimg_r128,</span>
<span class="line" id="L92"> movrel,</span>
<span class="line" id="L93"> negative_scratch_offset_bug,</span>
<span class="line" id="L94"> negative_unaligned_scratch_offset_bug,</span>
<span class="line" id="L95"> no_data_dep_hazard,</span>
<span class="line" id="L96"> no_sdst_cmpx,</span>
<span class="line" id="L97"> nsa_clause_bug,</span>
<span class="line" id="L98"> nsa_encoding,</span>
<span class="line" id="L99"> nsa_max_size_13,</span>
<span class="line" id="L100"> nsa_max_size_5,</span>
<span class="line" id="L101"> nsa_to_vmem_bug,</span>
<span class="line" id="L102"> offset_3f_bug,</span>
<span class="line" id="L103"> packed_fp32_ops,</span>
<span class="line" id="L104"> packed_tid,</span>
<span class="line" id="L105"> pk_fmac_f16_inst,</span>
<span class="line" id="L106"> promote_alloca,</span>
<span class="line" id="L107"> prt_strict_null,</span>
<span class="line" id="L108"> r128_a16,</span>
<span class="line" id="L109"> s_memrealtime,</span>
<span class="line" id="L110"> s_memtime_inst,</span>
<span class="line" id="L111"> scalar_atomics,</span>
<span class="line" id="L112"> scalar_flat_scratch_insts,</span>
<span class="line" id="L113"> scalar_stores,</span>
<span class="line" id="L114"> sdwa,</span>
<span class="line" id="L115"> sdwa_mav,</span>
<span class="line" id="L116"> sdwa_omod,</span>
<span class="line" id="L117"> sdwa_out_mods_vopc,</span>
<span class="line" id="L118"> sdwa_scalar,</span>
<span class="line" id="L119"> sdwa_sdst,</span>
<span class="line" id="L120"> sea_islands,</span>
<span class="line" id="L121"> sgpr_init_bug,</span>
<span class="line" id="L122"> shader_cycles_register,</span>
<span class="line" id="L123"> si_scheduler,</span>
<span class="line" id="L124"> smem_to_vector_write_hazard,</span>
<span class="line" id="L125"> southern_islands,</span>
<span class="line" id="L126"> sramecc,</span>
<span class="line" id="L127"> sramecc_support,</span>
<span class="line" id="L128"> tgsplit,</span>
<span class="line" id="L129"> trap_handler,</span>
<span class="line" id="L130"> trig_reduced_range,</span>
<span class="line" id="L131"> true16,</span>
<span class="line" id="L132"> unaligned_access_mode,</span>
<span class="line" id="L133"> unaligned_buffer_access,</span>
<span class="line" id="L134"> unaligned_ds_access,</span>
<span class="line" id="L135"> unaligned_scratch_access,</span>
<span class="line" id="L136"> unpacked_d16_vmem,</span>
<span class="line" id="L137"> unsafe_ds_offset_folding,</span>
<span class="line" id="L138"> user_sgpr_init16_bug,</span>
<span class="line" id="L139"> valu_trans_use_hazard,</span>
<span class="line" id="L140"> vcmpx_exec_war_hazard,</span>
<span class="line" id="L141"> vcmpx_permlane_hazard,</span>
<span class="line" id="L142"> vgpr_index_mode,</span>
<span class="line" id="L143"> vmem_to_scalar_write_hazard,</span>
<span class="line" id="L144"> volcanic_islands,</span>
<span class="line" id="L145"> vop3_literal,</span>
<span class="line" id="L146"> vop3p,</span>
<span class="line" id="L147"> vopd,</span>
<span class="line" id="L148"> vscnt,</span>
<span class="line" id="L149"> wavefrontsize16,</span>
<span class="line" id="L150"> wavefrontsize32,</span>
<span class="line" id="L151"> wavefrontsize64,</span>
<span class="line" id="L152"> xnack,</span>
<span class="line" id="L153"> xnack_support,</span>
<span class="line" id="L154">};</span>
<span class="line" id="L155"></span>
<span class="line" id="L156"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> featureSet = CpuFeature.feature_set_fns(Feature).featureSet;</span>
<span class="line" id="L157"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> featureSetHas = CpuFeature.feature_set_fns(Feature).featureSetHas;</span>
<span class="line" id="L158"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> featureSetHasAny = CpuFeature.feature_set_fns(Feature).featureSetHasAny;</span>
<span class="line" id="L159"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> featureSetHasAll = CpuFeature.feature_set_fns(Feature).featureSetHasAll;</span>
<span class="line" id="L160"></span>
<span class="line" id="L161"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> all_features = blk: {</span>
<span class="line" id="L162"> <span class="tok-kw">const</span> len = <span class="tok-builtin">@typeInfo</span>(Feature).Enum.fields.len;</span>
<span class="line" id="L163"> std.debug.assert(len <= CpuFeature.Set.needed_bit_count);</span>
<span class="line" id="L164"> <span class="tok-kw">var</span> result: [len]CpuFeature = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L165"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.@"16_bit_insts")] = .{</span>
<span class="line" id="L166"> .llvm_name = <span class="tok-str">"16-bit-insts"</span>,</span>
<span class="line" id="L167"> .description = <span class="tok-str">"Has i16/f16 instructions"</span>,</span>
<span class="line" id="L168"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L169"> };</span>
<span class="line" id="L170"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.a16)] = .{</span>
<span class="line" id="L171"> .llvm_name = <span class="tok-str">"a16"</span>,</span>
<span class="line" id="L172"> .description = <span class="tok-str">"Support A16 for 16-bit coordinates/gradients/lod/clamp/mip image operands"</span>,</span>
<span class="line" id="L173"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L174"> };</span>
<span class="line" id="L175"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.add_no_carry_insts)] = .{</span>
<span class="line" id="L176"> .llvm_name = <span class="tok-str">"add-no-carry-insts"</span>,</span>
<span class="line" id="L177"> .description = <span class="tok-str">"Have VALU add/sub instructions without carry out"</span>,</span>
<span class="line" id="L178"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L179"> };</span>
<span class="line" id="L180"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.aperture_regs)] = .{</span>
<span class="line" id="L181"> .llvm_name = <span class="tok-str">"aperture-regs"</span>,</span>
<span class="line" id="L182"> .description = <span class="tok-str">"Has Memory Aperture Base and Size Registers"</span>,</span>
<span class="line" id="L183"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L184"> };</span>
<span class="line" id="L185"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.architected_flat_scratch)] = .{</span>
<span class="line" id="L186"> .llvm_name = <span class="tok-str">"architected-flat-scratch"</span>,</span>
<span class="line" id="L187"> .description = <span class="tok-str">"Flat Scratch register is a readonly SPI initialized architected register"</span>,</span>
<span class="line" id="L188"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L189"> };</span>
<span class="line" id="L190"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.atomic_fadd_no_rtn_insts)] = .{</span>
<span class="line" id="L191"> .llvm_name = <span class="tok-str">"atomic-fadd-no-rtn-insts"</span>,</span>
<span class="line" id="L192"> .description = <span class="tok-str">"Has buffer_atomic_add_f32 and global_atomic_add_f32 instructions that don't return original value"</span>,</span>
<span class="line" id="L193"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L194"> .flat_global_insts,</span>
<span class="line" id="L195"> }),</span>
<span class="line" id="L196"> };</span>
<span class="line" id="L197"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.atomic_fadd_rtn_insts)] = .{</span>
<span class="line" id="L198"> .llvm_name = <span class="tok-str">"atomic-fadd-rtn-insts"</span>,</span>
<span class="line" id="L199"> .description = <span class="tok-str">"Has buffer_atomic_add_f32 and global_atomic_add_f32 instructions that return original value"</span>,</span>
<span class="line" id="L200"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L201"> .flat_global_insts,</span>
<span class="line" id="L202"> }),</span>
<span class="line" id="L203"> };</span>
<span class="line" id="L204"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.atomic_pk_fadd_no_rtn_insts)] = .{</span>
<span class="line" id="L205"> .llvm_name = <span class="tok-str">"atomic-pk-fadd-no-rtn-insts"</span>,</span>
<span class="line" id="L206"> .description = <span class="tok-str">"Has buffer_atomic_pk_add_f16 and global_atomic_pk_add_f16 instructions that don't return original value"</span>,</span>
<span class="line" id="L207"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L208"> .flat_global_insts,</span>
<span class="line" id="L209"> }),</span>
<span class="line" id="L210"> };</span>
<span class="line" id="L211"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.auto_waitcnt_before_barrier)] = .{</span>
<span class="line" id="L212"> .llvm_name = <span class="tok-str">"auto-waitcnt-before-barrier"</span>,</span>
<span class="line" id="L213"> .description = <span class="tok-str">"Hardware automatically inserts waitcnt before barrier"</span>,</span>
<span class="line" id="L214"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L215"> };</span>
<span class="line" id="L216"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.back_off_barrier)] = .{</span>
<span class="line" id="L217"> .llvm_name = <span class="tok-str">"back-off-barrier"</span>,</span>
<span class="line" id="L218"> .description = <span class="tok-str">"Hardware supports backing off s_barrier if an exception occurs"</span>,</span>
<span class="line" id="L219"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L220"> };</span>
<span class="line" id="L221"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.ci_insts)] = .{</span>
<span class="line" id="L222"> .llvm_name = <span class="tok-str">"ci-insts"</span>,</span>
<span class="line" id="L223"> .description = <span class="tok-str">"Additional instructions for CI+"</span>,</span>
<span class="line" id="L224"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L225"> };</span>
<span class="line" id="L226"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.cumode)] = .{</span>
<span class="line" id="L227"> .llvm_name = <span class="tok-str">"cumode"</span>,</span>
<span class="line" id="L228"> .description = <span class="tok-str">"Enable CU wavefront execution mode"</span>,</span>
<span class="line" id="L229"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L230"> };</span>
<span class="line" id="L231"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.dl_insts)] = .{</span>
<span class="line" id="L232"> .llvm_name = <span class="tok-str">"dl-insts"</span>,</span>
<span class="line" id="L233"> .description = <span class="tok-str">"Has v_fmac_f32 and v_xnor_b32 instructions"</span>,</span>
<span class="line" id="L234"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L235"> };</span>
<span class="line" id="L236"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.dot1_insts)] = .{</span>
<span class="line" id="L237"> .llvm_name = <span class="tok-str">"dot1-insts"</span>,</span>
<span class="line" id="L238"> .description = <span class="tok-str">"Has v_dot4_i32_i8 and v_dot8_i32_i4 instructions"</span>,</span>
<span class="line" id="L239"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L240"> };</span>
<span class="line" id="L241"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.dot2_insts)] = .{</span>
<span class="line" id="L242"> .llvm_name = <span class="tok-str">"dot2-insts"</span>,</span>
<span class="line" id="L243"> .description = <span class="tok-str">"Has v_dot2_i32_i16, v_dot2_u32_u16 instructions"</span>,</span>
<span class="line" id="L244"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L245"> };</span>
<span class="line" id="L246"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.dot3_insts)] = .{</span>
<span class="line" id="L247"> .llvm_name = <span class="tok-str">"dot3-insts"</span>,</span>
<span class="line" id="L248"> .description = <span class="tok-str">"Has v_dot8c_i32_i4 instruction"</span>,</span>
<span class="line" id="L249"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L250"> };</span>
<span class="line" id="L251"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.dot4_insts)] = .{</span>
<span class="line" id="L252"> .llvm_name = <span class="tok-str">"dot4-insts"</span>,</span>
<span class="line" id="L253"> .description = <span class="tok-str">"Has v_dot2c_i32_i16 instruction"</span>,</span>
<span class="line" id="L254"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L255"> };</span>
<span class="line" id="L256"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.dot5_insts)] = .{</span>
<span class="line" id="L257"> .llvm_name = <span class="tok-str">"dot5-insts"</span>,</span>
<span class="line" id="L258"> .description = <span class="tok-str">"Has v_dot2c_f32_f16 instruction"</span>,</span>
<span class="line" id="L259"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L260"> };</span>
<span class="line" id="L261"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.dot6_insts)] = .{</span>
<span class="line" id="L262"> .llvm_name = <span class="tok-str">"dot6-insts"</span>,</span>
<span class="line" id="L263"> .description = <span class="tok-str">"Has v_dot4c_i32_i8 instruction"</span>,</span>
<span class="line" id="L264"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L265"> };</span>
<span class="line" id="L266"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.dot7_insts)] = .{</span>
<span class="line" id="L267"> .llvm_name = <span class="tok-str">"dot7-insts"</span>,</span>
<span class="line" id="L268"> .description = <span class="tok-str">"Has v_dot2_f32_f16, v_dot4_u32_u8, v_dot8_u32_u4 instructions"</span>,</span>
<span class="line" id="L269"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L270"> };</span>
<span class="line" id="L271"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.dot8_insts)] = .{</span>
<span class="line" id="L272"> .llvm_name = <span class="tok-str">"dot8-insts"</span>,</span>
<span class="line" id="L273"> .description = <span class="tok-str">"Has v_dot4_i32_iu8, v_dot8_i32_iu4 instructions"</span>,</span>
<span class="line" id="L274"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L275"> };</span>
<span class="line" id="L276"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.dot9_insts)] = .{</span>
<span class="line" id="L277"> .llvm_name = <span class="tok-str">"dot9-insts"</span>,</span>
<span class="line" id="L278"> .description = <span class="tok-str">"Has v_dot2_f16_f16, v_dot2_bf16_bf16, v_dot2_f32_bf16 instructions"</span>,</span>
<span class="line" id="L279"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L280"> };</span>
<span class="line" id="L281"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.dpp)] = .{</span>
<span class="line" id="L282"> .llvm_name = <span class="tok-str">"dpp"</span>,</span>
<span class="line" id="L283"> .description = <span class="tok-str">"Support DPP (Data Parallel Primitives) extension"</span>,</span>
<span class="line" id="L284"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L285"> };</span>
<span class="line" id="L286"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.dpp8)] = .{</span>
<span class="line" id="L287"> .llvm_name = <span class="tok-str">"dpp8"</span>,</span>
<span class="line" id="L288"> .description = <span class="tok-str">"Support DPP8 (Data Parallel Primitives) extension"</span>,</span>
<span class="line" id="L289"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L290"> };</span>
<span class="line" id="L291"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.dpp_64bit)] = .{</span>
<span class="line" id="L292"> .llvm_name = <span class="tok-str">"dpp-64bit"</span>,</span>
<span class="line" id="L293"> .description = <span class="tok-str">"Support DPP (Data Parallel Primitives) extension"</span>,</span>
<span class="line" id="L294"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L295"> };</span>
<span class="line" id="L296"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.ds128)] = .{</span>
<span class="line" id="L297"> .llvm_name = <span class="tok-str">"enable-ds128"</span>,</span>
<span class="line" id="L298"> .description = <span class="tok-str">"Use ds_{read|write}_b128"</span>,</span>
<span class="line" id="L299"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L300"> };</span>
<span class="line" id="L301"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.ds_src2_insts)] = .{</span>
<span class="line" id="L302"> .llvm_name = <span class="tok-str">"ds-src2-insts"</span>,</span>
<span class="line" id="L303"> .description = <span class="tok-str">"Has ds_*_src2 instructions"</span>,</span>
<span class="line" id="L304"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L305"> };</span>
<span class="line" id="L306"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.extended_image_insts)] = .{</span>
<span class="line" id="L307"> .llvm_name = <span class="tok-str">"extended-image-insts"</span>,</span>
<span class="line" id="L308"> .description = <span class="tok-str">"Support mips != 0, lod != 0, gather4, and get_lod"</span>,</span>
<span class="line" id="L309"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L310"> };</span>
<span class="line" id="L311"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_denormal_f32)] = .{</span>
<span class="line" id="L312"> .llvm_name = <span class="tok-str">"fast-denormal-f32"</span>,</span>
<span class="line" id="L313"> .description = <span class="tok-str">"Enabling denormals does not cause f32 instructions to run at f64 rates"</span>,</span>
<span class="line" id="L314"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L315"> };</span>
<span class="line" id="L316"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_fmaf)] = .{</span>
<span class="line" id="L317"> .llvm_name = <span class="tok-str">"fast-fmaf"</span>,</span>
<span class="line" id="L318"> .description = <span class="tok-str">"Assuming f32 fma is at least as fast as mul + add"</span>,</span>
<span class="line" id="L319"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L320"> };</span>
<span class="line" id="L321"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.flat_address_space)] = .{</span>
<span class="line" id="L322"> .llvm_name = <span class="tok-str">"flat-address-space"</span>,</span>
<span class="line" id="L323"> .description = <span class="tok-str">"Support flat address space"</span>,</span>
<span class="line" id="L324"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L325"> };</span>
<span class="line" id="L326"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.flat_atomic_fadd_f32_inst)] = .{</span>
<span class="line" id="L327"> .llvm_name = <span class="tok-str">"flat-atomic-fadd-f32-inst"</span>,</span>
<span class="line" id="L328"> .description = <span class="tok-str">"Has flat_atomic_add_f32 instruction"</span>,</span>
<span class="line" id="L329"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L330"> };</span>
<span class="line" id="L331"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.flat_for_global)] = .{</span>
<span class="line" id="L332"> .llvm_name = <span class="tok-str">"flat-for-global"</span>,</span>
<span class="line" id="L333"> .description = <span class="tok-str">"Force to generate flat instruction for global"</span>,</span>
<span class="line" id="L334"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L335"> };</span>
<span class="line" id="L336"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.flat_global_insts)] = .{</span>
<span class="line" id="L337"> .llvm_name = <span class="tok-str">"flat-global-insts"</span>,</span>
<span class="line" id="L338"> .description = <span class="tok-str">"Have global_* flat memory instructions"</span>,</span>
<span class="line" id="L339"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L340"> };</span>
<span class="line" id="L341"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.flat_inst_offsets)] = .{</span>
<span class="line" id="L342"> .llvm_name = <span class="tok-str">"flat-inst-offsets"</span>,</span>
<span class="line" id="L343"> .description = <span class="tok-str">"Flat instructions have immediate offset addressing mode"</span>,</span>
<span class="line" id="L344"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L345"> };</span>
<span class="line" id="L346"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.flat_scratch)] = .{</span>
<span class="line" id="L347"> .llvm_name = <span class="tok-str">"enable-flat-scratch"</span>,</span>
<span class="line" id="L348"> .description = <span class="tok-str">"Use scratch_* flat memory instructions to access scratch"</span>,</span>
<span class="line" id="L349"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L350"> };</span>
<span class="line" id="L351"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.flat_scratch_insts)] = .{</span>
<span class="line" id="L352"> .llvm_name = <span class="tok-str">"flat-scratch-insts"</span>,</span>
<span class="line" id="L353"> .description = <span class="tok-str">"Have scratch_* flat memory instructions"</span>,</span>
<span class="line" id="L354"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L355"> };</span>
<span class="line" id="L356"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.flat_segment_offset_bug)] = .{</span>
<span class="line" id="L357"> .llvm_name = <span class="tok-str">"flat-segment-offset-bug"</span>,</span>
<span class="line" id="L358"> .description = <span class="tok-str">"GFX10 bug where inst_offset is ignored when flat instructions access global memory"</span>,</span>
<span class="line" id="L359"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L360"> };</span>
<span class="line" id="L361"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fma_mix_insts)] = .{</span>
<span class="line" id="L362"> .llvm_name = <span class="tok-str">"fma-mix-insts"</span>,</span>
<span class="line" id="L363"> .description = <span class="tok-str">"Has v_fma_mix_f32, v_fma_mixlo_f16, v_fma_mixhi_f16 instructions"</span>,</span>
<span class="line" id="L364"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L365"> };</span>
<span class="line" id="L366"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fmacf64_inst)] = .{</span>
<span class="line" id="L367"> .llvm_name = <span class="tok-str">"fmacf64-inst"</span>,</span>
<span class="line" id="L368"> .description = <span class="tok-str">"Has v_fmac_f64 instruction"</span>,</span>
<span class="line" id="L369"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L370"> };</span>
<span class="line" id="L371"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fmaf)] = .{</span>
<span class="line" id="L372"> .llvm_name = <span class="tok-str">"fmaf"</span>,</span>
<span class="line" id="L373"> .description = <span class="tok-str">"Enable single precision FMA (not as fast as mul+add, but fused)"</span>,</span>
<span class="line" id="L374"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L375"> };</span>
<span class="line" id="L376"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fp64)] = .{</span>
<span class="line" id="L377"> .llvm_name = <span class="tok-str">"fp64"</span>,</span>
<span class="line" id="L378"> .description = <span class="tok-str">"Enable double precision operations"</span>,</span>
<span class="line" id="L379"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L380"> };</span>
<span class="line" id="L381"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fp8_insts)] = .{</span>
<span class="line" id="L382"> .llvm_name = <span class="tok-str">"fp8-insts"</span>,</span>
<span class="line" id="L383"> .description = <span class="tok-str">"Has fp8 and bf8 instructions"</span>,</span>
<span class="line" id="L384"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L385"> };</span>
<span class="line" id="L386"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.full_rate_64_ops)] = .{</span>
<span class="line" id="L387"> .llvm_name = <span class="tok-str">"full-rate-64-ops"</span>,</span>
<span class="line" id="L388"> .description = <span class="tok-str">"Most fp64 instructions are full rate"</span>,</span>
<span class="line" id="L389"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L390"> };</span>
<span class="line" id="L391"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.g16)] = .{</span>
<span class="line" id="L392"> .llvm_name = <span class="tok-str">"g16"</span>,</span>
<span class="line" id="L393"> .description = <span class="tok-str">"Support G16 for 16-bit gradient image operands"</span>,</span>
<span class="line" id="L394"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L395"> };</span>
<span class="line" id="L396"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.gcn3_encoding)] = .{</span>
<span class="line" id="L397"> .llvm_name = <span class="tok-str">"gcn3-encoding"</span>,</span>
<span class="line" id="L398"> .description = <span class="tok-str">"Encoding format for VI"</span>,</span>
<span class="line" id="L399"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L400"> };</span>
<span class="line" id="L401"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.get_wave_id_inst)] = .{</span>
<span class="line" id="L402"> .llvm_name = <span class="tok-str">"get-wave-id-inst"</span>,</span>
<span class="line" id="L403"> .description = <span class="tok-str">"Has s_get_waveid_in_workgroup instruction"</span>,</span>
<span class="line" id="L404"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L405"> };</span>
<span class="line" id="L406"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.gfx10)] = .{</span>
<span class="line" id="L407"> .llvm_name = <span class="tok-str">"gfx10"</span>,</span>
<span class="line" id="L408"> .description = <span class="tok-str">"GFX10 GPU generation"</span>,</span>
<span class="line" id="L409"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L410"> .@"16_bit_insts",</span>
<span class="line" id="L411"> .a16,</span>
<span class="line" id="L412"> .add_no_carry_insts,</span>
<span class="line" id="L413"> .aperture_regs,</span>
<span class="line" id="L414"> .ci_insts,</span>
<span class="line" id="L415"> .dpp,</span>
<span class="line" id="L416"> .dpp8,</span>
<span class="line" id="L417"> .extended_image_insts,</span>
<span class="line" id="L418"> .fast_denormal_f32,</span>
<span class="line" id="L419"> .fast_fmaf,</span>
<span class="line" id="L420"> .flat_address_space,</span>
<span class="line" id="L421"> .flat_global_insts,</span>
<span class="line" id="L422"> .flat_inst_offsets,</span>
<span class="line" id="L423"> .flat_scratch_insts,</span>
<span class="line" id="L424"> .fma_mix_insts,</span>
<span class="line" id="L425"> .fp64,</span>
<span class="line" id="L426"> .g16,</span>
<span class="line" id="L427"> .gfx10_insts,</span>
<span class="line" id="L428"> .gfx8_insts,</span>
<span class="line" id="L429"> .gfx9_insts,</span>
<span class="line" id="L430"> .image_insts,</span>
<span class="line" id="L431"> .int_clamp_insts,</span>
<span class="line" id="L432"> .inv_2pi_inline_imm,</span>
<span class="line" id="L433"> .localmemorysize65536,</span>
<span class="line" id="L434"> .mimg_r128,</span>
<span class="line" id="L435"> .movrel,</span>
<span class="line" id="L436"> .no_data_dep_hazard,</span>
<span class="line" id="L437"> .no_sdst_cmpx,</span>
<span class="line" id="L438"> .pk_fmac_f16_inst,</span>
<span class="line" id="L439"> .s_memrealtime,</span>
<span class="line" id="L440"> .s_memtime_inst,</span>
<span class="line" id="L441"> .sdwa,</span>
<span class="line" id="L442"> .sdwa_omod,</span>
<span class="line" id="L443"> .sdwa_scalar,</span>
<span class="line" id="L444"> .sdwa_sdst,</span>
<span class="line" id="L445"> .unaligned_buffer_access,</span>
<span class="line" id="L446"> .unaligned_ds_access,</span>
<span class="line" id="L447"> .vop3_literal,</span>
<span class="line" id="L448"> .vop3p,</span>
<span class="line" id="L449"> .vscnt,</span>
<span class="line" id="L450"> }),</span>
<span class="line" id="L451"> };</span>
<span class="line" id="L452"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.gfx10_3_insts)] = .{</span>
<span class="line" id="L453"> .llvm_name = <span class="tok-str">"gfx10-3-insts"</span>,</span>
<span class="line" id="L454"> .description = <span class="tok-str">"Additional instructions for GFX10.3"</span>,</span>
<span class="line" id="L455"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L456"> };</span>
<span class="line" id="L457"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.gfx10_a_encoding)] = .{</span>
<span class="line" id="L458"> .llvm_name = <span class="tok-str">"gfx10_a-encoding"</span>,</span>
<span class="line" id="L459"> .description = <span class="tok-str">"Has BVH ray tracing instructions"</span>,</span>
<span class="line" id="L460"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L461"> };</span>
<span class="line" id="L462"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.gfx10_b_encoding)] = .{</span>
<span class="line" id="L463"> .llvm_name = <span class="tok-str">"gfx10_b-encoding"</span>,</span>
<span class="line" id="L464"> .description = <span class="tok-str">"Encoding format GFX10_B"</span>,</span>
<span class="line" id="L465"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L466"> };</span>
<span class="line" id="L467"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.gfx10_insts)] = .{</span>
<span class="line" id="L468"> .llvm_name = <span class="tok-str">"gfx10-insts"</span>,</span>
<span class="line" id="L469"> .description = <span class="tok-str">"Additional instructions for GFX10+"</span>,</span>
<span class="line" id="L470"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L471"> };</span>
<span class="line" id="L472"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.gfx11)] = .{</span>
<span class="line" id="L473"> .llvm_name = <span class="tok-str">"gfx11"</span>,</span>
<span class="line" id="L474"> .description = <span class="tok-str">"GFX11 GPU generation"</span>,</span>
<span class="line" id="L475"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L476"> .@"16_bit_insts",</span>
<span class="line" id="L477"> .a16,</span>
<span class="line" id="L478"> .add_no_carry_insts,</span>
<span class="line" id="L479"> .aperture_regs,</span>
<span class="line" id="L480"> .ci_insts,</span>
<span class="line" id="L481"> .dpp,</span>
<span class="line" id="L482"> .dpp8,</span>
<span class="line" id="L483"> .extended_image_insts,</span>
<span class="line" id="L484"> .fast_denormal_f32,</span>
<span class="line" id="L485"> .fast_fmaf,</span>
<span class="line" id="L486"> .flat_address_space,</span>
<span class="line" id="L487"> .flat_global_insts,</span>
<span class="line" id="L488"> .flat_inst_offsets,</span>
<span class="line" id="L489"> .flat_scratch_insts,</span>
<span class="line" id="L490"> .fma_mix_insts,</span>
<span class="line" id="L491"> .fp64,</span>
<span class="line" id="L492"> .g16,</span>
<span class="line" id="L493"> .gfx10_3_insts,</span>
<span class="line" id="L494"> .gfx10_a_encoding,</span>
<span class="line" id="L495"> .gfx10_b_encoding,</span>
<span class="line" id="L496"> .gfx10_insts,</span>
<span class="line" id="L497"> .gfx11_insts,</span>
<span class="line" id="L498"> .gfx8_insts,</span>
<span class="line" id="L499"> .gfx9_insts,</span>
<span class="line" id="L500"> .int_clamp_insts,</span>
<span class="line" id="L501"> .inv_2pi_inline_imm,</span>
<span class="line" id="L502"> .localmemorysize65536,</span>
<span class="line" id="L503"> .mimg_r128,</span>
<span class="line" id="L504"> .movrel,</span>
<span class="line" id="L505"> .no_data_dep_hazard,</span>
<span class="line" id="L506"> .no_sdst_cmpx,</span>
<span class="line" id="L507"> .pk_fmac_f16_inst,</span>
<span class="line" id="L508"> .true16,</span>
<span class="line" id="L509"> .unaligned_buffer_access,</span>
<span class="line" id="L510"> .unaligned_ds_access,</span>
<span class="line" id="L511"> .vop3_literal,</span>
<span class="line" id="L512"> .vop3p,</span>
<span class="line" id="L513"> .vopd,</span>
<span class="line" id="L514"> .vscnt,</span>
<span class="line" id="L515"> }),</span>
<span class="line" id="L516"> };</span>
<span class="line" id="L517"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.gfx11_full_vgprs)] = .{</span>
<span class="line" id="L518"> .llvm_name = <span class="tok-str">"gfx11-full-vgprs"</span>,</span>
<span class="line" id="L519"> .description = <span class="tok-str">"GFX11 with 50% more physical VGPRs and 50% larger allocation granule than GFX10"</span>,</span>
<span class="line" id="L520"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L521"> };</span>
<span class="line" id="L522"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.gfx11_insts)] = .{</span>
<span class="line" id="L523"> .llvm_name = <span class="tok-str">"gfx11-insts"</span>,</span>
<span class="line" id="L524"> .description = <span class="tok-str">"Additional instructions for GFX11+"</span>,</span>
<span class="line" id="L525"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L526"> };</span>
<span class="line" id="L527"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.gfx7_gfx8_gfx9_insts)] = .{</span>
<span class="line" id="L528"> .llvm_name = <span class="tok-str">"gfx7-gfx8-gfx9-insts"</span>,</span>
<span class="line" id="L529"> .description = <span class="tok-str">"Instructions shared in GFX7, GFX8, GFX9"</span>,</span>
<span class="line" id="L530"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L531"> };</span>
<span class="line" id="L532"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.gfx8_insts)] = .{</span>
<span class="line" id="L533"> .llvm_name = <span class="tok-str">"gfx8-insts"</span>,</span>
<span class="line" id="L534"> .description = <span class="tok-str">"Additional instructions for GFX8+"</span>,</span>
<span class="line" id="L535"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L536"> };</span>
<span class="line" id="L537"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.gfx9)] = .{</span>
<span class="line" id="L538"> .llvm_name = <span class="tok-str">"gfx9"</span>,</span>
<span class="line" id="L539"> .description = <span class="tok-str">"GFX9 GPU generation"</span>,</span>
<span class="line" id="L540"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L541"> .@"16_bit_insts",</span>
<span class="line" id="L542"> .a16,</span>
<span class="line" id="L543"> .add_no_carry_insts,</span>
<span class="line" id="L544"> .aperture_regs,</span>
<span class="line" id="L545"> .ci_insts,</span>
<span class="line" id="L546"> .dpp,</span>
<span class="line" id="L547"> .fast_denormal_f32,</span>
<span class="line" id="L548"> .fast_fmaf,</span>
<span class="line" id="L549"> .flat_address_space,</span>
<span class="line" id="L550"> .flat_global_insts,</span>
<span class="line" id="L551"> .flat_inst_offsets,</span>
<span class="line" id="L552"> .flat_scratch_insts,</span>
<span class="line" id="L553"> .fp64,</span>
<span class="line" id="L554"> .gcn3_encoding,</span>
<span class="line" id="L555"> .gfx7_gfx8_gfx9_insts,</span>
<span class="line" id="L556"> .gfx8_insts,</span>
<span class="line" id="L557"> .gfx9_insts,</span>
<span class="line" id="L558"> .int_clamp_insts,</span>
<span class="line" id="L559"> .inv_2pi_inline_imm,</span>
<span class="line" id="L560"> .localmemorysize65536,</span>
<span class="line" id="L561"> .negative_scratch_offset_bug,</span>
<span class="line" id="L562"> .r128_a16,</span>
<span class="line" id="L563"> .s_memrealtime,</span>
<span class="line" id="L564"> .s_memtime_inst,</span>
<span class="line" id="L565"> .scalar_atomics,</span>
<span class="line" id="L566"> .scalar_flat_scratch_insts,</span>
<span class="line" id="L567"> .scalar_stores,</span>
<span class="line" id="L568"> .sdwa,</span>
<span class="line" id="L569"> .sdwa_omod,</span>
<span class="line" id="L570"> .sdwa_scalar,</span>
<span class="line" id="L571"> .sdwa_sdst,</span>
<span class="line" id="L572"> .unaligned_buffer_access,</span>
<span class="line" id="L573"> .unaligned_ds_access,</span>
<span class="line" id="L574"> .vgpr_index_mode,</span>
<span class="line" id="L575"> .vop3p,</span>
<span class="line" id="L576"> .wavefrontsize64,</span>
<span class="line" id="L577"> .xnack_support,</span>
<span class="line" id="L578"> }),</span>
<span class="line" id="L579"> };</span>
<span class="line" id="L580"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.gfx90a_insts)] = .{</span>
<span class="line" id="L581"> .llvm_name = <span class="tok-str">"gfx90a-insts"</span>,</span>
<span class="line" id="L582"> .description = <span class="tok-str">"Additional instructions for GFX90A+"</span>,</span>
<span class="line" id="L583"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L584"> };</span>
<span class="line" id="L585"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.gfx940_insts)] = .{</span>
<span class="line" id="L586"> .llvm_name = <span class="tok-str">"gfx940-insts"</span>,</span>
<span class="line" id="L587"> .description = <span class="tok-str">"Additional instructions for GFX940+"</span>,</span>
<span class="line" id="L588"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L589"> };</span>
<span class="line" id="L590"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.gfx9_insts)] = .{</span>
<span class="line" id="L591"> .llvm_name = <span class="tok-str">"gfx9-insts"</span>,</span>
<span class="line" id="L592"> .description = <span class="tok-str">"Additional instructions for GFX9+"</span>,</span>
<span class="line" id="L593"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L594"> };</span>
<span class="line" id="L595"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.half_rate_64_ops)] = .{</span>
<span class="line" id="L596"> .llvm_name = <span class="tok-str">"half-rate-64-ops"</span>,</span>
<span class="line" id="L597"> .description = <span class="tok-str">"Most fp64 instructions are half rate instead of quarter"</span>,</span>
<span class="line" id="L598"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L599"> };</span>
<span class="line" id="L600"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.image_gather4_d16_bug)] = .{</span>
<span class="line" id="L601"> .llvm_name = <span class="tok-str">"image-gather4-d16-bug"</span>,</span>
<span class="line" id="L602"> .description = <span class="tok-str">"Image Gather4 D16 hardware bug"</span>,</span>
<span class="line" id="L603"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L604"> };</span>
<span class="line" id="L605"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.image_insts)] = .{</span>
<span class="line" id="L606"> .llvm_name = <span class="tok-str">"image-insts"</span>,</span>
<span class="line" id="L607"> .description = <span class="tok-str">"Support image instructions"</span>,</span>
<span class="line" id="L608"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L609"> };</span>
<span class="line" id="L610"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.image_store_d16_bug)] = .{</span>
<span class="line" id="L611"> .llvm_name = <span class="tok-str">"image-store-d16-bug"</span>,</span>
<span class="line" id="L612"> .description = <span class="tok-str">"Image Store D16 hardware bug"</span>,</span>
<span class="line" id="L613"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L614"> };</span>
<span class="line" id="L615"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.inst_fwd_prefetch_bug)] = .{</span>
<span class="line" id="L616"> .llvm_name = <span class="tok-str">"inst-fwd-prefetch-bug"</span>,</span>
<span class="line" id="L617"> .description = <span class="tok-str">"S_INST_PREFETCH instruction causes shader to hang"</span>,</span>
<span class="line" id="L618"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L619"> };</span>
<span class="line" id="L620"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.int_clamp_insts)] = .{</span>
<span class="line" id="L621"> .llvm_name = <span class="tok-str">"int-clamp-insts"</span>,</span>
<span class="line" id="L622"> .description = <span class="tok-str">"Support clamp for integer destination"</span>,</span>
<span class="line" id="L623"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L624"> };</span>
<span class="line" id="L625"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.inv_2pi_inline_imm)] = .{</span>
<span class="line" id="L626"> .llvm_name = <span class="tok-str">"inv-2pi-inline-imm"</span>,</span>
<span class="line" id="L627"> .description = <span class="tok-str">"Has 1 / (2 * pi) as inline immediate"</span>,</span>
<span class="line" id="L628"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L629"> };</span>
<span class="line" id="L630"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.lds_branch_vmem_war_hazard)] = .{</span>
<span class="line" id="L631"> .llvm_name = <span class="tok-str">"lds-branch-vmem-war-hazard"</span>,</span>
<span class="line" id="L632"> .description = <span class="tok-str">"Switching between LDS and VMEM-tex not waiting VM_VSRC=0"</span>,</span>
<span class="line" id="L633"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L634"> };</span>
<span class="line" id="L635"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.lds_misaligned_bug)] = .{</span>
<span class="line" id="L636"> .llvm_name = <span class="tok-str">"lds-misaligned-bug"</span>,</span>
<span class="line" id="L637"> .description = <span class="tok-str">"Some GFX10 bug with multi-dword LDS and flat access that is not naturally aligned in WGP mode"</span>,</span>
<span class="line" id="L638"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L639"> };</span>
<span class="line" id="L640"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.ldsbankcount16)] = .{</span>
<span class="line" id="L641"> .llvm_name = <span class="tok-str">"ldsbankcount16"</span>,</span>
<span class="line" id="L642"> .description = <span class="tok-str">"The number of LDS banks per compute unit."</span>,</span>
<span class="line" id="L643"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L644"> };</span>
<span class="line" id="L645"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.ldsbankcount32)] = .{</span>
<span class="line" id="L646"> .llvm_name = <span class="tok-str">"ldsbankcount32"</span>,</span>
<span class="line" id="L647"> .description = <span class="tok-str">"The number of LDS banks per compute unit."</span>,</span>
<span class="line" id="L648"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L649"> };</span>
<span class="line" id="L650"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.load_store_opt)] = .{</span>
<span class="line" id="L651"> .llvm_name = <span class="tok-str">"load-store-opt"</span>,</span>
<span class="line" id="L652"> .description = <span class="tok-str">"Enable SI load/store optimizer pass"</span>,</span>
<span class="line" id="L653"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L654"> };</span>
<span class="line" id="L655"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.localmemorysize32768)] = .{</span>
<span class="line" id="L656"> .llvm_name = <span class="tok-str">"localmemorysize32768"</span>,</span>
<span class="line" id="L657"> .description = <span class="tok-str">"The size of local memory in bytes"</span>,</span>
<span class="line" id="L658"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L659"> };</span>
<span class="line" id="L660"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.localmemorysize65536)] = .{</span>
<span class="line" id="L661"> .llvm_name = <span class="tok-str">"localmemorysize65536"</span>,</span>
<span class="line" id="L662"> .description = <span class="tok-str">"The size of local memory in bytes"</span>,</span>
<span class="line" id="L663"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L664"> };</span>
<span class="line" id="L665"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.mad_intra_fwd_bug)] = .{</span>
<span class="line" id="L666"> .llvm_name = <span class="tok-str">"mad-intra-fwd-bug"</span>,</span>
<span class="line" id="L667"> .description = <span class="tok-str">"MAD_U64/I64 intra instruction forwarding bug"</span>,</span>
<span class="line" id="L668"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L669"> };</span>
<span class="line" id="L670"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.mad_mac_f32_insts)] = .{</span>
<span class="line" id="L671"> .llvm_name = <span class="tok-str">"mad-mac-f32-insts"</span>,</span>
<span class="line" id="L672"> .description = <span class="tok-str">"Has v_mad_f32/v_mac_f32/v_madak_f32/v_madmk_f32 instructions"</span>,</span>
<span class="line" id="L673"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L674"> };</span>
<span class="line" id="L675"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.mad_mix_insts)] = .{</span>
<span class="line" id="L676"> .llvm_name = <span class="tok-str">"mad-mix-insts"</span>,</span>
<span class="line" id="L677"> .description = <span class="tok-str">"Has v_mad_mix_f32, v_mad_mixlo_f16, v_mad_mixhi_f16 instructions"</span>,</span>
<span class="line" id="L678"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L679"> };</span>
<span class="line" id="L680"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.mai_insts)] = .{</span>
<span class="line" id="L681"> .llvm_name = <span class="tok-str">"mai-insts"</span>,</span>
<span class="line" id="L682"> .description = <span class="tok-str">"Has mAI instructions"</span>,</span>
<span class="line" id="L683"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L684"> };</span>
<span class="line" id="L685"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.max_private_element_size_16)] = .{</span>
<span class="line" id="L686"> .llvm_name = <span class="tok-str">"max-private-element-size-16"</span>,</span>
<span class="line" id="L687"> .description = <span class="tok-str">"Maximum private access size may be 16"</span>,</span>
<span class="line" id="L688"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L689"> };</span>
<span class="line" id="L690"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.max_private_element_size_4)] = .{</span>
<span class="line" id="L691"> .llvm_name = <span class="tok-str">"max-private-element-size-4"</span>,</span>
<span class="line" id="L692"> .description = <span class="tok-str">"Maximum private access size may be 4"</span>,</span>
<span class="line" id="L693"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L694"> };</span>
<span class="line" id="L695"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.max_private_element_size_8)] = .{</span>
<span class="line" id="L696"> .llvm_name = <span class="tok-str">"max-private-element-size-8"</span>,</span>
<span class="line" id="L697"> .description = <span class="tok-str">"Maximum private access size may be 8"</span>,</span>
<span class="line" id="L698"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L699"> };</span>
<span class="line" id="L700"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.mfma_inline_literal_bug)] = .{</span>
<span class="line" id="L701"> .llvm_name = <span class="tok-str">"mfma-inline-literal-bug"</span>,</span>
<span class="line" id="L702"> .description = <span class="tok-str">"MFMA cannot use inline literal as SrcC"</span>,</span>
<span class="line" id="L703"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L704"> };</span>
<span class="line" id="L705"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.mimg_r128)] = .{</span>
<span class="line" id="L706"> .llvm_name = <span class="tok-str">"mimg-r128"</span>,</span>
<span class="line" id="L707"> .description = <span class="tok-str">"Support 128-bit texture resources"</span>,</span>
<span class="line" id="L708"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L709"> };</span>
<span class="line" id="L710"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.movrel)] = .{</span>
<span class="line" id="L711"> .llvm_name = <span class="tok-str">"movrel"</span>,</span>
<span class="line" id="L712"> .description = <span class="tok-str">"Has v_movrel*_b32 instructions"</span>,</span>
<span class="line" id="L713"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L714"> };</span>
<span class="line" id="L715"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.negative_scratch_offset_bug)] = .{</span>
<span class="line" id="L716"> .llvm_name = <span class="tok-str">"negative-scratch-offset-bug"</span>,</span>
<span class="line" id="L717"> .description = <span class="tok-str">"Negative immediate offsets in scratch instructions with an SGPR offset page fault on GFX9"</span>,</span>
<span class="line" id="L718"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L719"> };</span>
<span class="line" id="L720"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.negative_unaligned_scratch_offset_bug)] = .{</span>
<span class="line" id="L721"> .llvm_name = <span class="tok-str">"negative-unaligned-scratch-offset-bug"</span>,</span>
<span class="line" id="L722"> .description = <span class="tok-str">"Scratch instructions with a VGPR offset and a negative immediate offset that is not a multiple of 4 read wrong memory on GFX10"</span>,</span>
<span class="line" id="L723"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L724"> };</span>
<span class="line" id="L725"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.no_data_dep_hazard)] = .{</span>
<span class="line" id="L726"> .llvm_name = <span class="tok-str">"no-data-dep-hazard"</span>,</span>
<span class="line" id="L727"> .description = <span class="tok-str">"Does not need SW waitstates"</span>,</span>
<span class="line" id="L728"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L729"> };</span>
<span class="line" id="L730"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.no_sdst_cmpx)] = .{</span>
<span class="line" id="L731"> .llvm_name = <span class="tok-str">"no-sdst-cmpx"</span>,</span>
<span class="line" id="L732"> .description = <span class="tok-str">"V_CMPX does not write VCC/SGPR in addition to EXEC"</span>,</span>
<span class="line" id="L733"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L734"> };</span>
<span class="line" id="L735"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.nsa_clause_bug)] = .{</span>
<span class="line" id="L736"> .llvm_name = <span class="tok-str">"nsa-clause-bug"</span>,</span>
<span class="line" id="L737"> .description = <span class="tok-str">"MIMG-NSA in a hard clause has unpredictable results on GFX10.1"</span>,</span>
<span class="line" id="L738"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L739"> };</span>
<span class="line" id="L740"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.nsa_encoding)] = .{</span>
<span class="line" id="L741"> .llvm_name = <span class="tok-str">"nsa-encoding"</span>,</span>
<span class="line" id="L742"> .description = <span class="tok-str">"Support NSA encoding for image instructions"</span>,</span>
<span class="line" id="L743"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L744"> };</span>
<span class="line" id="L745"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.nsa_max_size_13)] = .{</span>
<span class="line" id="L746"> .llvm_name = <span class="tok-str">"nsa-max-size-13"</span>,</span>
<span class="line" id="L747"> .description = <span class="tok-str">"The maximum non-sequential address size in VGPRs."</span>,</span>
<span class="line" id="L748"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L749"> };</span>
<span class="line" id="L750"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.nsa_max_size_5)] = .{</span>
<span class="line" id="L751"> .llvm_name = <span class="tok-str">"nsa-max-size-5"</span>,</span>
<span class="line" id="L752"> .description = <span class="tok-str">"The maximum non-sequential address size in VGPRs."</span>,</span>
<span class="line" id="L753"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L754"> };</span>
<span class="line" id="L755"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.nsa_to_vmem_bug)] = .{</span>
<span class="line" id="L756"> .llvm_name = <span class="tok-str">"nsa-to-vmem-bug"</span>,</span>
<span class="line" id="L757"> .description = <span class="tok-str">"MIMG-NSA followed by VMEM fail if EXEC_LO or EXEC_HI equals zero"</span>,</span>
<span class="line" id="L758"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L759"> };</span>
<span class="line" id="L760"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.offset_3f_bug)] = .{</span>
<span class="line" id="L761"> .llvm_name = <span class="tok-str">"offset-3f-bug"</span>,</span>
<span class="line" id="L762"> .description = <span class="tok-str">"Branch offset of 3f hardware bug"</span>,</span>
<span class="line" id="L763"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L764"> };</span>
<span class="line" id="L765"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.packed_fp32_ops)] = .{</span>
<span class="line" id="L766"> .llvm_name = <span class="tok-str">"packed-fp32-ops"</span>,</span>
<span class="line" id="L767"> .description = <span class="tok-str">"Support packed fp32 instructions"</span>,</span>
<span class="line" id="L768"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L769"> };</span>
<span class="line" id="L770"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.packed_tid)] = .{</span>
<span class="line" id="L771"> .llvm_name = <span class="tok-str">"packed-tid"</span>,</span>
<span class="line" id="L772"> .description = <span class="tok-str">"Workitem IDs are packed into v0 at kernel launch"</span>,</span>
<span class="line" id="L773"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L774"> };</span>
<span class="line" id="L775"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.pk_fmac_f16_inst)] = .{</span>
<span class="line" id="L776"> .llvm_name = <span class="tok-str">"pk-fmac-f16-inst"</span>,</span>
<span class="line" id="L777"> .description = <span class="tok-str">"Has v_pk_fmac_f16 instruction"</span>,</span>
<span class="line" id="L778"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L779"> };</span>
<span class="line" id="L780"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.promote_alloca)] = .{</span>
<span class="line" id="L781"> .llvm_name = <span class="tok-str">"promote-alloca"</span>,</span>
<span class="line" id="L782"> .description = <span class="tok-str">"Enable promote alloca pass"</span>,</span>
<span class="line" id="L783"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L784"> };</span>
<span class="line" id="L785"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.prt_strict_null)] = .{</span>
<span class="line" id="L786"> .llvm_name = <span class="tok-str">"enable-prt-strict-null"</span>,</span>
<span class="line" id="L787"> .description = <span class="tok-str">"Enable zeroing of result registers for sparse texture fetches"</span>,</span>
<span class="line" id="L788"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L789"> };</span>
<span class="line" id="L790"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.r128_a16)] = .{</span>
<span class="line" id="L791"> .llvm_name = <span class="tok-str">"r128-a16"</span>,</span>
<span class="line" id="L792"> .description = <span class="tok-str">"Support gfx9-style A16 for 16-bit coordinates/gradients/lod/clamp/mip image operands, where a16 is aliased with r128"</span>,</span>
<span class="line" id="L793"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L794"> };</span>
<span class="line" id="L795"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.s_memrealtime)] = .{</span>
<span class="line" id="L796"> .llvm_name = <span class="tok-str">"s-memrealtime"</span>,</span>
<span class="line" id="L797"> .description = <span class="tok-str">"Has s_memrealtime instruction"</span>,</span>
<span class="line" id="L798"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L799"> };</span>
<span class="line" id="L800"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.s_memtime_inst)] = .{</span>
<span class="line" id="L801"> .llvm_name = <span class="tok-str">"s-memtime-inst"</span>,</span>
<span class="line" id="L802"> .description = <span class="tok-str">"Has s_memtime instruction"</span>,</span>
<span class="line" id="L803"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L804"> };</span>
<span class="line" id="L805"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.scalar_atomics)] = .{</span>
<span class="line" id="L806"> .llvm_name = <span class="tok-str">"scalar-atomics"</span>,</span>
<span class="line" id="L807"> .description = <span class="tok-str">"Has atomic scalar memory instructions"</span>,</span>
<span class="line" id="L808"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L809"> };</span>
<span class="line" id="L810"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.scalar_flat_scratch_insts)] = .{</span>
<span class="line" id="L811"> .llvm_name = <span class="tok-str">"scalar-flat-scratch-insts"</span>,</span>
<span class="line" id="L812"> .description = <span class="tok-str">"Have s_scratch_* flat memory instructions"</span>,</span>
<span class="line" id="L813"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L814"> };</span>
<span class="line" id="L815"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.scalar_stores)] = .{</span>
<span class="line" id="L816"> .llvm_name = <span class="tok-str">"scalar-stores"</span>,</span>
<span class="line" id="L817"> .description = <span class="tok-str">"Has store scalar memory instructions"</span>,</span>
<span class="line" id="L818"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L819"> };</span>
<span class="line" id="L820"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sdwa)] = .{</span>
<span class="line" id="L821"> .llvm_name = <span class="tok-str">"sdwa"</span>,</span>
<span class="line" id="L822"> .description = <span class="tok-str">"Support SDWA (Sub-DWORD Addressing) extension"</span>,</span>
<span class="line" id="L823"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L824"> };</span>
<span class="line" id="L825"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sdwa_mav)] = .{</span>
<span class="line" id="L826"> .llvm_name = <span class="tok-str">"sdwa-mav"</span>,</span>
<span class="line" id="L827"> .description = <span class="tok-str">"Support v_mac_f32/f16 with SDWA (Sub-DWORD Addressing) extension"</span>,</span>
<span class="line" id="L828"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L829"> };</span>
<span class="line" id="L830"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sdwa_omod)] = .{</span>
<span class="line" id="L831"> .llvm_name = <span class="tok-str">"sdwa-omod"</span>,</span>
<span class="line" id="L832"> .description = <span class="tok-str">"Support OMod with SDWA (Sub-DWORD Addressing) extension"</span>,</span>
<span class="line" id="L833"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L834"> };</span>
<span class="line" id="L835"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sdwa_out_mods_vopc)] = .{</span>
<span class="line" id="L836"> .llvm_name = <span class="tok-str">"sdwa-out-mods-vopc"</span>,</span>
<span class="line" id="L837"> .description = <span class="tok-str">"Support clamp for VOPC with SDWA (Sub-DWORD Addressing) extension"</span>,</span>
<span class="line" id="L838"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L839"> };</span>
<span class="line" id="L840"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sdwa_scalar)] = .{</span>
<span class="line" id="L841"> .llvm_name = <span class="tok-str">"sdwa-scalar"</span>,</span>
<span class="line" id="L842"> .description = <span class="tok-str">"Support scalar register with SDWA (Sub-DWORD Addressing) extension"</span>,</span>
<span class="line" id="L843"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L844"> };</span>
<span class="line" id="L845"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sdwa_sdst)] = .{</span>
<span class="line" id="L846"> .llvm_name = <span class="tok-str">"sdwa-sdst"</span>,</span>
<span class="line" id="L847"> .description = <span class="tok-str">"Support scalar dst for VOPC with SDWA (Sub-DWORD Addressing) extension"</span>,</span>
<span class="line" id="L848"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L849"> };</span>
<span class="line" id="L850"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sea_islands)] = .{</span>
<span class="line" id="L851"> .llvm_name = <span class="tok-str">"sea-islands"</span>,</span>
<span class="line" id="L852"> .description = <span class="tok-str">"SEA_ISLANDS GPU generation"</span>,</span>
<span class="line" id="L853"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L854"> .ci_insts,</span>
<span class="line" id="L855"> .ds_src2_insts,</span>
<span class="line" id="L856"> .extended_image_insts,</span>
<span class="line" id="L857"> .flat_address_space,</span>
<span class="line" id="L858"> .fp64,</span>
<span class="line" id="L859"> .gfx7_gfx8_gfx9_insts,</span>
<span class="line" id="L860"> .image_insts,</span>
<span class="line" id="L861"> .localmemorysize65536,</span>
<span class="line" id="L862"> .mad_mac_f32_insts,</span>
<span class="line" id="L863"> .mimg_r128,</span>
<span class="line" id="L864"> .movrel,</span>
<span class="line" id="L865"> .s_memtime_inst,</span>
<span class="line" id="L866"> .trig_reduced_range,</span>
<span class="line" id="L867"> .unaligned_buffer_access,</span>
<span class="line" id="L868"> .wavefrontsize64,</span>
<span class="line" id="L869"> }),</span>
<span class="line" id="L870"> };</span>
<span class="line" id="L871"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sgpr_init_bug)] = .{</span>
<span class="line" id="L872"> .llvm_name = <span class="tok-str">"sgpr-init-bug"</span>,</span>
<span class="line" id="L873"> .description = <span class="tok-str">"VI SGPR initialization bug requiring a fixed SGPR allocation size"</span>,</span>
<span class="line" id="L874"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L875"> };</span>
<span class="line" id="L876"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.shader_cycles_register)] = .{</span>
<span class="line" id="L877"> .llvm_name = <span class="tok-str">"shader-cycles-register"</span>,</span>
<span class="line" id="L878"> .description = <span class="tok-str">"Has SHADER_CYCLES hardware register"</span>,</span>
<span class="line" id="L879"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L880"> };</span>
<span class="line" id="L881"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.si_scheduler)] = .{</span>
<span class="line" id="L882"> .llvm_name = <span class="tok-str">"si-scheduler"</span>,</span>
<span class="line" id="L883"> .description = <span class="tok-str">"Enable SI Machine Scheduler"</span>,</span>
<span class="line" id="L884"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L885"> };</span>
<span class="line" id="L886"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.smem_to_vector_write_hazard)] = .{</span>
<span class="line" id="L887"> .llvm_name = <span class="tok-str">"smem-to-vector-write-hazard"</span>,</span>
<span class="line" id="L888"> .description = <span class="tok-str">"s_load_dword followed by v_cmp page faults"</span>,</span>
<span class="line" id="L889"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L890"> };</span>
<span class="line" id="L891"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.southern_islands)] = .{</span>
<span class="line" id="L892"> .llvm_name = <span class="tok-str">"southern-islands"</span>,</span>
<span class="line" id="L893"> .description = <span class="tok-str">"SOUTHERN_ISLANDS GPU generation"</span>,</span>
<span class="line" id="L894"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L895"> .ds_src2_insts,</span>
<span class="line" id="L896"> .extended_image_insts,</span>
<span class="line" id="L897"> .fp64,</span>
<span class="line" id="L898"> .image_insts,</span>
<span class="line" id="L899"> .ldsbankcount32,</span>
<span class="line" id="L900"> .localmemorysize32768,</span>
<span class="line" id="L901"> .mad_mac_f32_insts,</span>
<span class="line" id="L902"> .mimg_r128,</span>
<span class="line" id="L903"> .movrel,</span>
<span class="line" id="L904"> .s_memtime_inst,</span>
<span class="line" id="L905"> .trig_reduced_range,</span>
<span class="line" id="L906"> .wavefrontsize64,</span>
<span class="line" id="L907"> }),</span>
<span class="line" id="L908"> };</span>
<span class="line" id="L909"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sramecc)] = .{</span>
<span class="line" id="L910"> .llvm_name = <span class="tok-str">"sramecc"</span>,</span>
<span class="line" id="L911"> .description = <span class="tok-str">"Enable SRAMECC"</span>,</span>
<span class="line" id="L912"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L913"> };</span>
<span class="line" id="L914"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sramecc_support)] = .{</span>
<span class="line" id="L915"> .llvm_name = <span class="tok-str">"sramecc-support"</span>,</span>
<span class="line" id="L916"> .description = <span class="tok-str">"Hardware supports SRAMECC"</span>,</span>
<span class="line" id="L917"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L918"> };</span>
<span class="line" id="L919"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.tgsplit)] = .{</span>
<span class="line" id="L920"> .llvm_name = <span class="tok-str">"tgsplit"</span>,</span>
<span class="line" id="L921"> .description = <span class="tok-str">"Enable threadgroup split execution"</span>,</span>
<span class="line" id="L922"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L923"> };</span>
<span class="line" id="L924"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.trap_handler)] = .{</span>
<span class="line" id="L925"> .llvm_name = <span class="tok-str">"trap-handler"</span>,</span>
<span class="line" id="L926"> .description = <span class="tok-str">"Trap handler support"</span>,</span>
<span class="line" id="L927"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L928"> };</span>
<span class="line" id="L929"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.trig_reduced_range)] = .{</span>
<span class="line" id="L930"> .llvm_name = <span class="tok-str">"trig-reduced-range"</span>,</span>
<span class="line" id="L931"> .description = <span class="tok-str">"Requires use of fract on arguments to trig instructions"</span>,</span>
<span class="line" id="L932"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L933"> };</span>
<span class="line" id="L934"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.true16)] = .{</span>
<span class="line" id="L935"> .llvm_name = <span class="tok-str">"true16"</span>,</span>
<span class="line" id="L936"> .description = <span class="tok-str">"True 16-bit operand instructions"</span>,</span>
<span class="line" id="L937"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L938"> };</span>
<span class="line" id="L939"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.unaligned_access_mode)] = .{</span>
<span class="line" id="L940"> .llvm_name = <span class="tok-str">"unaligned-access-mode"</span>,</span>
<span class="line" id="L941"> .description = <span class="tok-str">"Enable unaligned global, local and region loads and stores if the hardware supports it"</span>,</span>
<span class="line" id="L942"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L943"> };</span>
<span class="line" id="L944"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.unaligned_buffer_access)] = .{</span>
<span class="line" id="L945"> .llvm_name = <span class="tok-str">"unaligned-buffer-access"</span>,</span>
<span class="line" id="L946"> .description = <span class="tok-str">"Hardware supports unaligned global loads and stores"</span>,</span>
<span class="line" id="L947"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L948"> };</span>
<span class="line" id="L949"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.unaligned_ds_access)] = .{</span>
<span class="line" id="L950"> .llvm_name = <span class="tok-str">"unaligned-ds-access"</span>,</span>
<span class="line" id="L951"> .description = <span class="tok-str">"Hardware supports unaligned local and region loads and stores"</span>,</span>
<span class="line" id="L952"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L953"> };</span>
<span class="line" id="L954"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.unaligned_scratch_access)] = .{</span>
<span class="line" id="L955"> .llvm_name = <span class="tok-str">"unaligned-scratch-access"</span>,</span>
<span class="line" id="L956"> .description = <span class="tok-str">"Support unaligned scratch loads and stores"</span>,</span>
<span class="line" id="L957"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L958"> };</span>
<span class="line" id="L959"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.unpacked_d16_vmem)] = .{</span>
<span class="line" id="L960"> .llvm_name = <span class="tok-str">"unpacked-d16-vmem"</span>,</span>
<span class="line" id="L961"> .description = <span class="tok-str">"Has unpacked d16 vmem instructions"</span>,</span>
<span class="line" id="L962"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L963"> };</span>
<span class="line" id="L964"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.unsafe_ds_offset_folding)] = .{</span>
<span class="line" id="L965"> .llvm_name = <span class="tok-str">"unsafe-ds-offset-folding"</span>,</span>
<span class="line" id="L966"> .description = <span class="tok-str">"Force using DS instruction immediate offsets on SI"</span>,</span>
<span class="line" id="L967"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L968"> };</span>
<span class="line" id="L969"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.user_sgpr_init16_bug)] = .{</span>
<span class="line" id="L970"> .llvm_name = <span class="tok-str">"user-sgpr-init16-bug"</span>,</span>
<span class="line" id="L971"> .description = <span class="tok-str">"Bug requiring at least 16 user+system SGPRs to be enabled"</span>,</span>
<span class="line" id="L972"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L973"> };</span>
<span class="line" id="L974"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.valu_trans_use_hazard)] = .{</span>
<span class="line" id="L975"> .llvm_name = <span class="tok-str">"valu-trans-use-hazard"</span>,</span>
<span class="line" id="L976"> .description = <span class="tok-str">"Hazard when TRANS instructions are closely followed by a use of the result"</span>,</span>
<span class="line" id="L977"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L978"> };</span>
<span class="line" id="L979"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vcmpx_exec_war_hazard)] = .{</span>
<span class="line" id="L980"> .llvm_name = <span class="tok-str">"vcmpx-exec-war-hazard"</span>,</span>
<span class="line" id="L981"> .description = <span class="tok-str">"V_CMPX WAR hazard on EXEC (V_CMPX issue ONLY)"</span>,</span>
<span class="line" id="L982"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L983"> };</span>
<span class="line" id="L984"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vcmpx_permlane_hazard)] = .{</span>
<span class="line" id="L985"> .llvm_name = <span class="tok-str">"vcmpx-permlane-hazard"</span>,</span>
<span class="line" id="L986"> .description = <span class="tok-str">"TODO: describe me"</span>,</span>
<span class="line" id="L987"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L988"> };</span>
<span class="line" id="L989"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vgpr_index_mode)] = .{</span>
<span class="line" id="L990"> .llvm_name = <span class="tok-str">"vgpr-index-mode"</span>,</span>
<span class="line" id="L991"> .description = <span class="tok-str">"Has VGPR mode register indexing"</span>,</span>
<span class="line" id="L992"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L993"> };</span>
<span class="line" id="L994"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vmem_to_scalar_write_hazard)] = .{</span>
<span class="line" id="L995"> .llvm_name = <span class="tok-str">"vmem-to-scalar-write-hazard"</span>,</span>
<span class="line" id="L996"> .description = <span class="tok-str">"VMEM instruction followed by scalar writing to EXEC mask, M0 or SGPR leads to incorrect execution."</span>,</span>
<span class="line" id="L997"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L998"> };</span>
<span class="line" id="L999"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.volcanic_islands)] = .{</span>
<span class="line" id="L1000"> .llvm_name = <span class="tok-str">"volcanic-islands"</span>,</span>
<span class="line" id="L1001"> .description = <span class="tok-str">"VOLCANIC_ISLANDS GPU generation"</span>,</span>
<span class="line" id="L1002"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L1003"> .@"16_bit_insts",</span>
<span class="line" id="L1004"> .ci_insts,</span>
<span class="line" id="L1005"> .dpp,</span>
<span class="line" id="L1006"> .ds_src2_insts,</span>
<span class="line" id="L1007"> .extended_image_insts,</span>
<span class="line" id="L1008"> .fast_denormal_f32,</span>
<span class="line" id="L1009"> .flat_address_space,</span>
<span class="line" id="L1010"> .fp64,</span>
<span class="line" id="L1011"> .gcn3_encoding,</span>
<span class="line" id="L1012"> .gfx7_gfx8_gfx9_insts,</span>
<span class="line" id="L1013"> .gfx8_insts,</span>
<span class="line" id="L1014"> .image_insts,</span>
<span class="line" id="L1015"> .int_clamp_insts,</span>
<span class="line" id="L1016"> .inv_2pi_inline_imm,</span>
<span class="line" id="L1017"> .localmemorysize65536,</span>
<span class="line" id="L1018"> .mad_mac_f32_insts,</span>
<span class="line" id="L1019"> .mimg_r128,</span>
<span class="line" id="L1020"> .movrel,</span>
<span class="line" id="L1021"> .s_memrealtime,</span>
<span class="line" id="L1022"> .s_memtime_inst,</span>
<span class="line" id="L1023"> .scalar_stores,</span>
<span class="line" id="L1024"> .sdwa,</span>
<span class="line" id="L1025"> .sdwa_mav,</span>
<span class="line" id="L1026"> .sdwa_out_mods_vopc,</span>
<span class="line" id="L1027"> .trig_reduced_range,</span>
<span class="line" id="L1028"> .unaligned_buffer_access,</span>
<span class="line" id="L1029"> .vgpr_index_mode,</span>
<span class="line" id="L1030"> .wavefrontsize64,</span>
<span class="line" id="L1031"> }),</span>
<span class="line" id="L1032"> };</span>
<span class="line" id="L1033"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vop3_literal)] = .{</span>
<span class="line" id="L1034"> .llvm_name = <span class="tok-str">"vop3-literal"</span>,</span>
<span class="line" id="L1035"> .description = <span class="tok-str">"Can use one literal in VOP3"</span>,</span>
<span class="line" id="L1036"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1037"> };</span>
<span class="line" id="L1038"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vop3p)] = .{</span>
<span class="line" id="L1039"> .llvm_name = <span class="tok-str">"vop3p"</span>,</span>
<span class="line" id="L1040"> .description = <span class="tok-str">"Has VOP3P packed instructions"</span>,</span>
<span class="line" id="L1041"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1042"> };</span>
<span class="line" id="L1043"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vopd)] = .{</span>
<span class="line" id="L1044"> .llvm_name = <span class="tok-str">"vopd"</span>,</span>
<span class="line" id="L1045"> .description = <span class="tok-str">"Has VOPD dual issue wave32 instructions"</span>,</span>
<span class="line" id="L1046"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1047"> };</span>
<span class="line" id="L1048"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vscnt)] = .{</span>
<span class="line" id="L1049"> .llvm_name = <span class="tok-str">"vscnt"</span>,</span>
<span class="line" id="L1050"> .description = <span class="tok-str">"Has separate store vscnt counter"</span>,</span>
<span class="line" id="L1051"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1052"> };</span>
<span class="line" id="L1053"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.wavefrontsize16)] = .{</span>
<span class="line" id="L1054"> .llvm_name = <span class="tok-str">"wavefrontsize16"</span>,</span>
<span class="line" id="L1055"> .description = <span class="tok-str">"The number of threads per wavefront"</span>,</span>
<span class="line" id="L1056"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1057"> };</span>
<span class="line" id="L1058"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.wavefrontsize32)] = .{</span>
<span class="line" id="L1059"> .llvm_name = <span class="tok-str">"wavefrontsize32"</span>,</span>
<span class="line" id="L1060"> .description = <span class="tok-str">"The number of threads per wavefront"</span>,</span>
<span class="line" id="L1061"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1062"> };</span>
<span class="line" id="L1063"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.wavefrontsize64)] = .{</span>
<span class="line" id="L1064"> .llvm_name = <span class="tok-str">"wavefrontsize64"</span>,</span>
<span class="line" id="L1065"> .description = <span class="tok-str">"The number of threads per wavefront"</span>,</span>
<span class="line" id="L1066"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1067"> };</span>
<span class="line" id="L1068"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.xnack)] = .{</span>
<span class="line" id="L1069"> .llvm_name = <span class="tok-str">"xnack"</span>,</span>
<span class="line" id="L1070"> .description = <span class="tok-str">"Enable XNACK support"</span>,</span>
<span class="line" id="L1071"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1072"> };</span>
<span class="line" id="L1073"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.xnack_support)] = .{</span>
<span class="line" id="L1074"> .llvm_name = <span class="tok-str">"xnack-support"</span>,</span>
<span class="line" id="L1075"> .description = <span class="tok-str">"Hardware supports XNACK"</span>,</span>
<span class="line" id="L1076"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1077"> };</span>
<span class="line" id="L1078"> <span class="tok-kw">const</span> ti = <span class="tok-builtin">@typeInfo</span>(Feature);</span>
<span class="line" id="L1079"> <span class="tok-kw">for</span> (&result, <span class="tok-number">0</span>..) |*elem, i| {</span>
<span class="line" id="L1080"> elem.index = i;</span>
<span class="line" id="L1081"> elem.name = ti.Enum.fields[i].name;</span>
<span class="line" id="L1082"> }</span>
<span class="line" id="L1083"> <span class="tok-kw">break</span> :blk result;</span>
<span class="line" id="L1084">};</span>
<span class="line" id="L1085"></span>
<span class="line" id="L1086"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> cpu = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1087"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> bonaire = CpuModel{</span>
<span class="line" id="L1088"> .name = <span class="tok-str">"bonaire"</span>,</span>
<span class="line" id="L1089"> .llvm_name = <span class="tok-str">"bonaire"</span>,</span>
<span class="line" id="L1090"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1091"> .ldsbankcount32,</span>
<span class="line" id="L1092"> .sea_islands,</span>
<span class="line" id="L1093"> }),</span>
<span class="line" id="L1094"> };</span>
<span class="line" id="L1095"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> carrizo = CpuModel{</span>
<span class="line" id="L1096"> .name = <span class="tok-str">"carrizo"</span>,</span>
<span class="line" id="L1097"> .llvm_name = <span class="tok-str">"carrizo"</span>,</span>
<span class="line" id="L1098"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1099"> .fast_fmaf,</span>
<span class="line" id="L1100"> .half_rate_64_ops,</span>
<span class="line" id="L1101"> .ldsbankcount32,</span>
<span class="line" id="L1102"> .unpacked_d16_vmem,</span>
<span class="line" id="L1103"> .volcanic_islands,</span>
<span class="line" id="L1104"> .xnack_support,</span>
<span class="line" id="L1105"> }),</span>
<span class="line" id="L1106"> };</span>
<span class="line" id="L1107"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> fiji = CpuModel{</span>
<span class="line" id="L1108"> .name = <span class="tok-str">"fiji"</span>,</span>
<span class="line" id="L1109"> .llvm_name = <span class="tok-str">"fiji"</span>,</span>
<span class="line" id="L1110"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1111"> .ldsbankcount32,</span>
<span class="line" id="L1112"> .unpacked_d16_vmem,</span>
<span class="line" id="L1113"> .volcanic_islands,</span>
<span class="line" id="L1114"> }),</span>
<span class="line" id="L1115"> };</span>
<span class="line" id="L1116"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> generic = CpuModel{</span>
<span class="line" id="L1117"> .name = <span class="tok-str">"generic"</span>,</span>
<span class="line" id="L1118"> .llvm_name = <span class="tok-str">"generic"</span>,</span>
<span class="line" id="L1119"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1120"> .wavefrontsize64,</span>
<span class="line" id="L1121"> }),</span>
<span class="line" id="L1122"> };</span>
<span class="line" id="L1123"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> generic_hsa = CpuModel{</span>
<span class="line" id="L1124"> .name = <span class="tok-str">"generic_hsa"</span>,</span>
<span class="line" id="L1125"> .llvm_name = <span class="tok-str">"generic-hsa"</span>,</span>
<span class="line" id="L1126"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1127"> .flat_address_space,</span>
<span class="line" id="L1128"> .wavefrontsize64,</span>
<span class="line" id="L1129"> }),</span>
<span class="line" id="L1130"> };</span>
<span class="line" id="L1131"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx1010 = CpuModel{</span>
<span class="line" id="L1132"> .name = <span class="tok-str">"gfx1010"</span>,</span>
<span class="line" id="L1133"> .llvm_name = <span class="tok-str">"gfx1010"</span>,</span>
<span class="line" id="L1134"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1135"> .back_off_barrier,</span>
<span class="line" id="L1136"> .dl_insts,</span>
<span class="line" id="L1137"> .ds_src2_insts,</span>
<span class="line" id="L1138"> .flat_segment_offset_bug,</span>
<span class="line" id="L1139"> .get_wave_id_inst,</span>
<span class="line" id="L1140"> .gfx10,</span>
<span class="line" id="L1141"> .inst_fwd_prefetch_bug,</span>
<span class="line" id="L1142"> .lds_branch_vmem_war_hazard,</span>
<span class="line" id="L1143"> .lds_misaligned_bug,</span>
<span class="line" id="L1144"> .ldsbankcount32,</span>
<span class="line" id="L1145"> .mad_mac_f32_insts,</span>
<span class="line" id="L1146"> .negative_unaligned_scratch_offset_bug,</span>
<span class="line" id="L1147"> .nsa_clause_bug,</span>
<span class="line" id="L1148"> .nsa_encoding,</span>
<span class="line" id="L1149"> .nsa_max_size_5,</span>
<span class="line" id="L1150"> .nsa_to_vmem_bug,</span>
<span class="line" id="L1151"> .offset_3f_bug,</span>
<span class="line" id="L1152"> .scalar_atomics,</span>
<span class="line" id="L1153"> .scalar_flat_scratch_insts,</span>
<span class="line" id="L1154"> .scalar_stores,</span>
<span class="line" id="L1155"> .smem_to_vector_write_hazard,</span>
<span class="line" id="L1156"> .vcmpx_exec_war_hazard,</span>
<span class="line" id="L1157"> .vcmpx_permlane_hazard,</span>
<span class="line" id="L1158"> .vmem_to_scalar_write_hazard,</span>
<span class="line" id="L1159"> .wavefrontsize32,</span>
<span class="line" id="L1160"> .xnack_support,</span>
<span class="line" id="L1161"> }),</span>
<span class="line" id="L1162"> };</span>
<span class="line" id="L1163"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx1011 = CpuModel{</span>
<span class="line" id="L1164"> .name = <span class="tok-str">"gfx1011"</span>,</span>
<span class="line" id="L1165"> .llvm_name = <span class="tok-str">"gfx1011"</span>,</span>
<span class="line" id="L1166"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1167"> .back_off_barrier,</span>
<span class="line" id="L1168"> .dl_insts,</span>
<span class="line" id="L1169"> .dot1_insts,</span>
<span class="line" id="L1170"> .dot2_insts,</span>
<span class="line" id="L1171"> .dot5_insts,</span>
<span class="line" id="L1172"> .dot6_insts,</span>
<span class="line" id="L1173"> .dot7_insts,</span>
<span class="line" id="L1174"> .ds_src2_insts,</span>
<span class="line" id="L1175"> .flat_segment_offset_bug,</span>
<span class="line" id="L1176"> .get_wave_id_inst,</span>
<span class="line" id="L1177"> .gfx10,</span>
<span class="line" id="L1178"> .inst_fwd_prefetch_bug,</span>
<span class="line" id="L1179"> .lds_branch_vmem_war_hazard,</span>
<span class="line" id="L1180"> .lds_misaligned_bug,</span>
<span class="line" id="L1181"> .ldsbankcount32,</span>
<span class="line" id="L1182"> .mad_mac_f32_insts,</span>
<span class="line" id="L1183"> .negative_unaligned_scratch_offset_bug,</span>
<span class="line" id="L1184"> .nsa_clause_bug,</span>
<span class="line" id="L1185"> .nsa_encoding,</span>
<span class="line" id="L1186"> .nsa_max_size_5,</span>
<span class="line" id="L1187"> .nsa_to_vmem_bug,</span>
<span class="line" id="L1188"> .offset_3f_bug,</span>
<span class="line" id="L1189"> .scalar_atomics,</span>
<span class="line" id="L1190"> .scalar_flat_scratch_insts,</span>
<span class="line" id="L1191"> .scalar_stores,</span>
<span class="line" id="L1192"> .smem_to_vector_write_hazard,</span>
<span class="line" id="L1193"> .vcmpx_exec_war_hazard,</span>
<span class="line" id="L1194"> .vcmpx_permlane_hazard,</span>
<span class="line" id="L1195"> .vmem_to_scalar_write_hazard,</span>
<span class="line" id="L1196"> .wavefrontsize32,</span>
<span class="line" id="L1197"> .xnack_support,</span>
<span class="line" id="L1198"> }),</span>
<span class="line" id="L1199"> };</span>
<span class="line" id="L1200"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx1012 = CpuModel{</span>
<span class="line" id="L1201"> .name = <span class="tok-str">"gfx1012"</span>,</span>
<span class="line" id="L1202"> .llvm_name = <span class="tok-str">"gfx1012"</span>,</span>
<span class="line" id="L1203"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1204"> .back_off_barrier,</span>
<span class="line" id="L1205"> .dl_insts,</span>
<span class="line" id="L1206"> .dot1_insts,</span>
<span class="line" id="L1207"> .dot2_insts,</span>
<span class="line" id="L1208"> .dot5_insts,</span>
<span class="line" id="L1209"> .dot6_insts,</span>
<span class="line" id="L1210"> .dot7_insts,</span>
<span class="line" id="L1211"> .ds_src2_insts,</span>
<span class="line" id="L1212"> .flat_segment_offset_bug,</span>
<span class="line" id="L1213"> .get_wave_id_inst,</span>
<span class="line" id="L1214"> .gfx10,</span>
<span class="line" id="L1215"> .inst_fwd_prefetch_bug,</span>
<span class="line" id="L1216"> .lds_branch_vmem_war_hazard,</span>
<span class="line" id="L1217"> .lds_misaligned_bug,</span>
<span class="line" id="L1218"> .ldsbankcount32,</span>
<span class="line" id="L1219"> .mad_mac_f32_insts,</span>
<span class="line" id="L1220"> .negative_unaligned_scratch_offset_bug,</span>
<span class="line" id="L1221"> .nsa_clause_bug,</span>
<span class="line" id="L1222"> .nsa_encoding,</span>
<span class="line" id="L1223"> .nsa_max_size_5,</span>
<span class="line" id="L1224"> .nsa_to_vmem_bug,</span>
<span class="line" id="L1225"> .offset_3f_bug,</span>
<span class="line" id="L1226"> .scalar_atomics,</span>
<span class="line" id="L1227"> .scalar_flat_scratch_insts,</span>
<span class="line" id="L1228"> .scalar_stores,</span>
<span class="line" id="L1229"> .smem_to_vector_write_hazard,</span>
<span class="line" id="L1230"> .vcmpx_exec_war_hazard,</span>
<span class="line" id="L1231"> .vcmpx_permlane_hazard,</span>
<span class="line" id="L1232"> .vmem_to_scalar_write_hazard,</span>
<span class="line" id="L1233"> .wavefrontsize32,</span>
<span class="line" id="L1234"> .xnack_support,</span>
<span class="line" id="L1235"> }),</span>
<span class="line" id="L1236"> };</span>
<span class="line" id="L1237"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx1013 = CpuModel{</span>
<span class="line" id="L1238"> .name = <span class="tok-str">"gfx1013"</span>,</span>
<span class="line" id="L1239"> .llvm_name = <span class="tok-str">"gfx1013"</span>,</span>
<span class="line" id="L1240"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1241"> .back_off_barrier,</span>
<span class="line" id="L1242"> .dl_insts,</span>
<span class="line" id="L1243"> .ds_src2_insts,</span>
<span class="line" id="L1244"> .flat_segment_offset_bug,</span>
<span class="line" id="L1245"> .get_wave_id_inst,</span>
<span class="line" id="L1246"> .gfx10,</span>
<span class="line" id="L1247"> .gfx10_a_encoding,</span>
<span class="line" id="L1248"> .inst_fwd_prefetch_bug,</span>
<span class="line" id="L1249"> .lds_branch_vmem_war_hazard,</span>
<span class="line" id="L1250"> .lds_misaligned_bug,</span>
<span class="line" id="L1251"> .ldsbankcount32,</span>
<span class="line" id="L1252"> .mad_mac_f32_insts,</span>
<span class="line" id="L1253"> .negative_unaligned_scratch_offset_bug,</span>
<span class="line" id="L1254"> .nsa_clause_bug,</span>
<span class="line" id="L1255"> .nsa_encoding,</span>
<span class="line" id="L1256"> .nsa_max_size_5,</span>
<span class="line" id="L1257"> .nsa_to_vmem_bug,</span>
<span class="line" id="L1258"> .offset_3f_bug,</span>
<span class="line" id="L1259"> .scalar_atomics,</span>
<span class="line" id="L1260"> .scalar_flat_scratch_insts,</span>
<span class="line" id="L1261"> .scalar_stores,</span>
<span class="line" id="L1262"> .smem_to_vector_write_hazard,</span>
<span class="line" id="L1263"> .vcmpx_exec_war_hazard,</span>
<span class="line" id="L1264"> .vcmpx_permlane_hazard,</span>
<span class="line" id="L1265"> .vmem_to_scalar_write_hazard,</span>
<span class="line" id="L1266"> .wavefrontsize32,</span>
<span class="line" id="L1267"> .xnack_support,</span>
<span class="line" id="L1268"> }),</span>
<span class="line" id="L1269"> };</span>
<span class="line" id="L1270"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx1030 = CpuModel{</span>
<span class="line" id="L1271"> .name = <span class="tok-str">"gfx1030"</span>,</span>
<span class="line" id="L1272"> .llvm_name = <span class="tok-str">"gfx1030"</span>,</span>
<span class="line" id="L1273"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1274"> .back_off_barrier,</span>
<span class="line" id="L1275"> .dl_insts,</span>
<span class="line" id="L1276"> .dot1_insts,</span>
<span class="line" id="L1277"> .dot2_insts,</span>
<span class="line" id="L1278"> .dot5_insts,</span>
<span class="line" id="L1279"> .dot6_insts,</span>
<span class="line" id="L1280"> .dot7_insts,</span>
<span class="line" id="L1281"> .gfx10,</span>
<span class="line" id="L1282"> .gfx10_3_insts,</span>
<span class="line" id="L1283"> .gfx10_a_encoding,</span>
<span class="line" id="L1284"> .gfx10_b_encoding,</span>
<span class="line" id="L1285"> .ldsbankcount32,</span>
<span class="line" id="L1286"> .nsa_encoding,</span>
<span class="line" id="L1287"> .nsa_max_size_13,</span>
<span class="line" id="L1288"> .shader_cycles_register,</span>
<span class="line" id="L1289"> .wavefrontsize32,</span>
<span class="line" id="L1290"> }),</span>
<span class="line" id="L1291"> };</span>
<span class="line" id="L1292"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx1031 = CpuModel{</span>
<span class="line" id="L1293"> .name = <span class="tok-str">"gfx1031"</span>,</span>
<span class="line" id="L1294"> .llvm_name = <span class="tok-str">"gfx1031"</span>,</span>
<span class="line" id="L1295"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1296"> .back_off_barrier,</span>
<span class="line" id="L1297"> .dl_insts,</span>
<span class="line" id="L1298"> .dot1_insts,</span>
<span class="line" id="L1299"> .dot2_insts,</span>
<span class="line" id="L1300"> .dot5_insts,</span>
<span class="line" id="L1301"> .dot6_insts,</span>
<span class="line" id="L1302"> .dot7_insts,</span>
<span class="line" id="L1303"> .gfx10,</span>
<span class="line" id="L1304"> .gfx10_3_insts,</span>
<span class="line" id="L1305"> .gfx10_a_encoding,</span>
<span class="line" id="L1306"> .gfx10_b_encoding,</span>
<span class="line" id="L1307"> .ldsbankcount32,</span>
<span class="line" id="L1308"> .nsa_encoding,</span>
<span class="line" id="L1309"> .nsa_max_size_13,</span>
<span class="line" id="L1310"> .shader_cycles_register,</span>
<span class="line" id="L1311"> .wavefrontsize32,</span>
<span class="line" id="L1312"> }),</span>
<span class="line" id="L1313"> };</span>
<span class="line" id="L1314"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx1032 = CpuModel{</span>
<span class="line" id="L1315"> .name = <span class="tok-str">"gfx1032"</span>,</span>
<span class="line" id="L1316"> .llvm_name = <span class="tok-str">"gfx1032"</span>,</span>
<span class="line" id="L1317"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1318"> .back_off_barrier,</span>
<span class="line" id="L1319"> .dl_insts,</span>
<span class="line" id="L1320"> .dot1_insts,</span>
<span class="line" id="L1321"> .dot2_insts,</span>
<span class="line" id="L1322"> .dot5_insts,</span>
<span class="line" id="L1323"> .dot6_insts,</span>
<span class="line" id="L1324"> .dot7_insts,</span>
<span class="line" id="L1325"> .gfx10,</span>
<span class="line" id="L1326"> .gfx10_3_insts,</span>
<span class="line" id="L1327"> .gfx10_a_encoding,</span>
<span class="line" id="L1328"> .gfx10_b_encoding,</span>
<span class="line" id="L1329"> .ldsbankcount32,</span>
<span class="line" id="L1330"> .nsa_encoding,</span>
<span class="line" id="L1331"> .nsa_max_size_13,</span>
<span class="line" id="L1332"> .shader_cycles_register,</span>
<span class="line" id="L1333"> .wavefrontsize32,</span>
<span class="line" id="L1334"> }),</span>
<span class="line" id="L1335"> };</span>
<span class="line" id="L1336"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx1033 = CpuModel{</span>
<span class="line" id="L1337"> .name = <span class="tok-str">"gfx1033"</span>,</span>
<span class="line" id="L1338"> .llvm_name = <span class="tok-str">"gfx1033"</span>,</span>
<span class="line" id="L1339"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1340"> .back_off_barrier,</span>
<span class="line" id="L1341"> .dl_insts,</span>
<span class="line" id="L1342"> .dot1_insts,</span>
<span class="line" id="L1343"> .dot2_insts,</span>
<span class="line" id="L1344"> .dot5_insts,</span>
<span class="line" id="L1345"> .dot6_insts,</span>
<span class="line" id="L1346"> .dot7_insts,</span>
<span class="line" id="L1347"> .gfx10,</span>
<span class="line" id="L1348"> .gfx10_3_insts,</span>
<span class="line" id="L1349"> .gfx10_a_encoding,</span>
<span class="line" id="L1350"> .gfx10_b_encoding,</span>
<span class="line" id="L1351"> .ldsbankcount32,</span>
<span class="line" id="L1352"> .nsa_encoding,</span>
<span class="line" id="L1353"> .nsa_max_size_13,</span>
<span class="line" id="L1354"> .shader_cycles_register,</span>
<span class="line" id="L1355"> .wavefrontsize32,</span>
<span class="line" id="L1356"> }),</span>
<span class="line" id="L1357"> };</span>
<span class="line" id="L1358"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx1034 = CpuModel{</span>
<span class="line" id="L1359"> .name = <span class="tok-str">"gfx1034"</span>,</span>
<span class="line" id="L1360"> .llvm_name = <span class="tok-str">"gfx1034"</span>,</span>
<span class="line" id="L1361"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1362"> .back_off_barrier,</span>
<span class="line" id="L1363"> .dl_insts,</span>
<span class="line" id="L1364"> .dot1_insts,</span>
<span class="line" id="L1365"> .dot2_insts,</span>
<span class="line" id="L1366"> .dot5_insts,</span>
<span class="line" id="L1367"> .dot6_insts,</span>
<span class="line" id="L1368"> .dot7_insts,</span>
<span class="line" id="L1369"> .gfx10,</span>
<span class="line" id="L1370"> .gfx10_3_insts,</span>
<span class="line" id="L1371"> .gfx10_a_encoding,</span>
<span class="line" id="L1372"> .gfx10_b_encoding,</span>
<span class="line" id="L1373"> .ldsbankcount32,</span>
<span class="line" id="L1374"> .nsa_encoding,</span>
<span class="line" id="L1375"> .nsa_max_size_13,</span>
<span class="line" id="L1376"> .shader_cycles_register,</span>
<span class="line" id="L1377"> .wavefrontsize32,</span>
<span class="line" id="L1378"> }),</span>
<span class="line" id="L1379"> };</span>
<span class="line" id="L1380"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx1035 = CpuModel{</span>
<span class="line" id="L1381"> .name = <span class="tok-str">"gfx1035"</span>,</span>
<span class="line" id="L1382"> .llvm_name = <span class="tok-str">"gfx1035"</span>,</span>
<span class="line" id="L1383"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1384"> .back_off_barrier,</span>
<span class="line" id="L1385"> .dl_insts,</span>
<span class="line" id="L1386"> .dot1_insts,</span>
<span class="line" id="L1387"> .dot2_insts,</span>
<span class="line" id="L1388"> .dot5_insts,</span>
<span class="line" id="L1389"> .dot6_insts,</span>
<span class="line" id="L1390"> .dot7_insts,</span>
<span class="line" id="L1391"> .gfx10,</span>
<span class="line" id="L1392"> .gfx10_3_insts,</span>
<span class="line" id="L1393"> .gfx10_a_encoding,</span>
<span class="line" id="L1394"> .gfx10_b_encoding,</span>
<span class="line" id="L1395"> .ldsbankcount32,</span>
<span class="line" id="L1396"> .nsa_encoding,</span>
<span class="line" id="L1397"> .nsa_max_size_13,</span>
<span class="line" id="L1398"> .shader_cycles_register,</span>
<span class="line" id="L1399"> .wavefrontsize32,</span>
<span class="line" id="L1400"> }),</span>
<span class="line" id="L1401"> };</span>
<span class="line" id="L1402"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx1036 = CpuModel{</span>
<span class="line" id="L1403"> .name = <span class="tok-str">"gfx1036"</span>,</span>
<span class="line" id="L1404"> .llvm_name = <span class="tok-str">"gfx1036"</span>,</span>
<span class="line" id="L1405"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1406"> .back_off_barrier,</span>
<span class="line" id="L1407"> .dl_insts,</span>
<span class="line" id="L1408"> .dot1_insts,</span>
<span class="line" id="L1409"> .dot2_insts,</span>
<span class="line" id="L1410"> .dot5_insts,</span>
<span class="line" id="L1411"> .dot6_insts,</span>
<span class="line" id="L1412"> .dot7_insts,</span>
<span class="line" id="L1413"> .gfx10,</span>
<span class="line" id="L1414"> .gfx10_3_insts,</span>
<span class="line" id="L1415"> .gfx10_a_encoding,</span>
<span class="line" id="L1416"> .gfx10_b_encoding,</span>
<span class="line" id="L1417"> .ldsbankcount32,</span>
<span class="line" id="L1418"> .nsa_encoding,</span>
<span class="line" id="L1419"> .nsa_max_size_13,</span>
<span class="line" id="L1420"> .shader_cycles_register,</span>
<span class="line" id="L1421"> .wavefrontsize32,</span>
<span class="line" id="L1422"> }),</span>
<span class="line" id="L1423"> };</span>
<span class="line" id="L1424"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx1100 = CpuModel{</span>
<span class="line" id="L1425"> .name = <span class="tok-str">"gfx1100"</span>,</span>
<span class="line" id="L1426"> .llvm_name = <span class="tok-str">"gfx1100"</span>,</span>
<span class="line" id="L1427"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1428"> .architected_flat_scratch,</span>
<span class="line" id="L1429"> .atomic_fadd_no_rtn_insts,</span>
<span class="line" id="L1430"> .atomic_fadd_rtn_insts,</span>
<span class="line" id="L1431"> .dl_insts,</span>
<span class="line" id="L1432"> .dot5_insts,</span>
<span class="line" id="L1433"> .dot7_insts,</span>
<span class="line" id="L1434"> .dot8_insts,</span>
<span class="line" id="L1435"> .dot9_insts,</span>
<span class="line" id="L1436"> .flat_atomic_fadd_f32_inst,</span>
<span class="line" id="L1437"> .gfx11,</span>
<span class="line" id="L1438"> .gfx11_full_vgprs,</span>
<span class="line" id="L1439"> .image_insts,</span>
<span class="line" id="L1440"> .ldsbankcount32,</span>
<span class="line" id="L1441"> .mad_intra_fwd_bug,</span>
<span class="line" id="L1442"> .nsa_encoding,</span>
<span class="line" id="L1443"> .nsa_max_size_5,</span>
<span class="line" id="L1444"> .packed_tid,</span>
<span class="line" id="L1445"> .shader_cycles_register,</span>
<span class="line" id="L1446"> .user_sgpr_init16_bug,</span>
<span class="line" id="L1447"> .valu_trans_use_hazard,</span>
<span class="line" id="L1448"> .vcmpx_permlane_hazard,</span>
<span class="line" id="L1449"> .wavefrontsize32,</span>
<span class="line" id="L1450"> }),</span>
<span class="line" id="L1451"> };</span>
<span class="line" id="L1452"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx1101 = CpuModel{</span>
<span class="line" id="L1453"> .name = <span class="tok-str">"gfx1101"</span>,</span>
<span class="line" id="L1454"> .llvm_name = <span class="tok-str">"gfx1101"</span>,</span>
<span class="line" id="L1455"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1456"> .architected_flat_scratch,</span>
<span class="line" id="L1457"> .atomic_fadd_no_rtn_insts,</span>
<span class="line" id="L1458"> .atomic_fadd_rtn_insts,</span>
<span class="line" id="L1459"> .dl_insts,</span>
<span class="line" id="L1460"> .dot5_insts,</span>
<span class="line" id="L1461"> .dot7_insts,</span>
<span class="line" id="L1462"> .dot8_insts,</span>
<span class="line" id="L1463"> .dot9_insts,</span>
<span class="line" id="L1464"> .flat_atomic_fadd_f32_inst,</span>
<span class="line" id="L1465"> .gfx11,</span>
<span class="line" id="L1466"> .gfx11_full_vgprs,</span>
<span class="line" id="L1467"> .image_insts,</span>
<span class="line" id="L1468"> .ldsbankcount32,</span>
<span class="line" id="L1469"> .mad_intra_fwd_bug,</span>
<span class="line" id="L1470"> .nsa_encoding,</span>
<span class="line" id="L1471"> .nsa_max_size_5,</span>
<span class="line" id="L1472"> .packed_tid,</span>
<span class="line" id="L1473"> .shader_cycles_register,</span>
<span class="line" id="L1474"> .valu_trans_use_hazard,</span>
<span class="line" id="L1475"> .vcmpx_permlane_hazard,</span>
<span class="line" id="L1476"> .wavefrontsize32,</span>
<span class="line" id="L1477"> }),</span>
<span class="line" id="L1478"> };</span>
<span class="line" id="L1479"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx1102 = CpuModel{</span>
<span class="line" id="L1480"> .name = <span class="tok-str">"gfx1102"</span>,</span>
<span class="line" id="L1481"> .llvm_name = <span class="tok-str">"gfx1102"</span>,</span>
<span class="line" id="L1482"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1483"> .architected_flat_scratch,</span>
<span class="line" id="L1484"> .atomic_fadd_no_rtn_insts,</span>
<span class="line" id="L1485"> .atomic_fadd_rtn_insts,</span>
<span class="line" id="L1486"> .dl_insts,</span>
<span class="line" id="L1487"> .dot5_insts,</span>
<span class="line" id="L1488"> .dot7_insts,</span>
<span class="line" id="L1489"> .dot8_insts,</span>
<span class="line" id="L1490"> .dot9_insts,</span>
<span class="line" id="L1491"> .flat_atomic_fadd_f32_inst,</span>
<span class="line" id="L1492"> .gfx11,</span>
<span class="line" id="L1493"> .image_insts,</span>
<span class="line" id="L1494"> .ldsbankcount32,</span>
<span class="line" id="L1495"> .mad_intra_fwd_bug,</span>
<span class="line" id="L1496"> .nsa_encoding,</span>
<span class="line" id="L1497"> .nsa_max_size_5,</span>
<span class="line" id="L1498"> .packed_tid,</span>
<span class="line" id="L1499"> .shader_cycles_register,</span>
<span class="line" id="L1500"> .user_sgpr_init16_bug,</span>
<span class="line" id="L1501"> .valu_trans_use_hazard,</span>
<span class="line" id="L1502"> .vcmpx_permlane_hazard,</span>
<span class="line" id="L1503"> .wavefrontsize32,</span>
<span class="line" id="L1504"> }),</span>
<span class="line" id="L1505"> };</span>
<span class="line" id="L1506"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx1103 = CpuModel{</span>
<span class="line" id="L1507"> .name = <span class="tok-str">"gfx1103"</span>,</span>
<span class="line" id="L1508"> .llvm_name = <span class="tok-str">"gfx1103"</span>,</span>
<span class="line" id="L1509"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1510"> .architected_flat_scratch,</span>
<span class="line" id="L1511"> .atomic_fadd_no_rtn_insts,</span>
<span class="line" id="L1512"> .atomic_fadd_rtn_insts,</span>
<span class="line" id="L1513"> .dl_insts,</span>
<span class="line" id="L1514"> .dot5_insts,</span>
<span class="line" id="L1515"> .dot7_insts,</span>
<span class="line" id="L1516"> .dot8_insts,</span>
<span class="line" id="L1517"> .dot9_insts,</span>
<span class="line" id="L1518"> .flat_atomic_fadd_f32_inst,</span>
<span class="line" id="L1519"> .gfx11,</span>
<span class="line" id="L1520"> .image_insts,</span>
<span class="line" id="L1521"> .ldsbankcount32,</span>
<span class="line" id="L1522"> .mad_intra_fwd_bug,</span>
<span class="line" id="L1523"> .nsa_encoding,</span>
<span class="line" id="L1524"> .nsa_max_size_5,</span>
<span class="line" id="L1525"> .packed_tid,</span>
<span class="line" id="L1526"> .shader_cycles_register,</span>
<span class="line" id="L1527"> .valu_trans_use_hazard,</span>
<span class="line" id="L1528"> .vcmpx_permlane_hazard,</span>
<span class="line" id="L1529"> .wavefrontsize32,</span>
<span class="line" id="L1530"> }),</span>
<span class="line" id="L1531"> };</span>
<span class="line" id="L1532"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx600 = CpuModel{</span>
<span class="line" id="L1533"> .name = <span class="tok-str">"gfx600"</span>,</span>
<span class="line" id="L1534"> .llvm_name = <span class="tok-str">"gfx600"</span>,</span>
<span class="line" id="L1535"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1536"> .fast_fmaf,</span>
<span class="line" id="L1537"> .half_rate_64_ops,</span>
<span class="line" id="L1538"> .southern_islands,</span>
<span class="line" id="L1539"> }),</span>
<span class="line" id="L1540"> };</span>
<span class="line" id="L1541"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx601 = CpuModel{</span>
<span class="line" id="L1542"> .name = <span class="tok-str">"gfx601"</span>,</span>
<span class="line" id="L1543"> .llvm_name = <span class="tok-str">"gfx601"</span>,</span>
<span class="line" id="L1544"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1545"> .southern_islands,</span>
<span class="line" id="L1546"> }),</span>
<span class="line" id="L1547"> };</span>
<span class="line" id="L1548"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx602 = CpuModel{</span>
<span class="line" id="L1549"> .name = <span class="tok-str">"gfx602"</span>,</span>
<span class="line" id="L1550"> .llvm_name = <span class="tok-str">"gfx602"</span>,</span>
<span class="line" id="L1551"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1552"> .southern_islands,</span>
<span class="line" id="L1553"> }),</span>
<span class="line" id="L1554"> };</span>
<span class="line" id="L1555"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx700 = CpuModel{</span>
<span class="line" id="L1556"> .name = <span class="tok-str">"gfx700"</span>,</span>
<span class="line" id="L1557"> .llvm_name = <span class="tok-str">"gfx700"</span>,</span>
<span class="line" id="L1558"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1559"> .ldsbankcount32,</span>
<span class="line" id="L1560"> .sea_islands,</span>
<span class="line" id="L1561"> }),</span>
<span class="line" id="L1562"> };</span>
<span class="line" id="L1563"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx701 = CpuModel{</span>
<span class="line" id="L1564"> .name = <span class="tok-str">"gfx701"</span>,</span>
<span class="line" id="L1565"> .llvm_name = <span class="tok-str">"gfx701"</span>,</span>
<span class="line" id="L1566"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1567"> .fast_fmaf,</span>
<span class="line" id="L1568"> .half_rate_64_ops,</span>
<span class="line" id="L1569"> .ldsbankcount32,</span>
<span class="line" id="L1570"> .sea_islands,</span>
<span class="line" id="L1571"> }),</span>
<span class="line" id="L1572"> };</span>
<span class="line" id="L1573"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx702 = CpuModel{</span>
<span class="line" id="L1574"> .name = <span class="tok-str">"gfx702"</span>,</span>
<span class="line" id="L1575"> .llvm_name = <span class="tok-str">"gfx702"</span>,</span>
<span class="line" id="L1576"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1577"> .fast_fmaf,</span>
<span class="line" id="L1578"> .ldsbankcount16,</span>
<span class="line" id="L1579"> .sea_islands,</span>
<span class="line" id="L1580"> }),</span>
<span class="line" id="L1581"> };</span>
<span class="line" id="L1582"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx703 = CpuModel{</span>
<span class="line" id="L1583"> .name = <span class="tok-str">"gfx703"</span>,</span>
<span class="line" id="L1584"> .llvm_name = <span class="tok-str">"gfx703"</span>,</span>
<span class="line" id="L1585"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1586"> .ldsbankcount16,</span>
<span class="line" id="L1587"> .sea_islands,</span>
<span class="line" id="L1588"> }),</span>
<span class="line" id="L1589"> };</span>
<span class="line" id="L1590"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx704 = CpuModel{</span>
<span class="line" id="L1591"> .name = <span class="tok-str">"gfx704"</span>,</span>
<span class="line" id="L1592"> .llvm_name = <span class="tok-str">"gfx704"</span>,</span>
<span class="line" id="L1593"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1594"> .ldsbankcount32,</span>
<span class="line" id="L1595"> .sea_islands,</span>
<span class="line" id="L1596"> }),</span>
<span class="line" id="L1597"> };</span>
<span class="line" id="L1598"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx705 = CpuModel{</span>
<span class="line" id="L1599"> .name = <span class="tok-str">"gfx705"</span>,</span>
<span class="line" id="L1600"> .llvm_name = <span class="tok-str">"gfx705"</span>,</span>
<span class="line" id="L1601"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1602"> .ldsbankcount16,</span>
<span class="line" id="L1603"> .sea_islands,</span>
<span class="line" id="L1604"> }),</span>
<span class="line" id="L1605"> };</span>
<span class="line" id="L1606"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx801 = CpuModel{</span>
<span class="line" id="L1607"> .name = <span class="tok-str">"gfx801"</span>,</span>
<span class="line" id="L1608"> .llvm_name = <span class="tok-str">"gfx801"</span>,</span>
<span class="line" id="L1609"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1610"> .fast_fmaf,</span>
<span class="line" id="L1611"> .half_rate_64_ops,</span>
<span class="line" id="L1612"> .ldsbankcount32,</span>
<span class="line" id="L1613"> .unpacked_d16_vmem,</span>
<span class="line" id="L1614"> .volcanic_islands,</span>
<span class="line" id="L1615"> .xnack_support,</span>
<span class="line" id="L1616"> }),</span>
<span class="line" id="L1617"> };</span>
<span class="line" id="L1618"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx802 = CpuModel{</span>
<span class="line" id="L1619"> .name = <span class="tok-str">"gfx802"</span>,</span>
<span class="line" id="L1620"> .llvm_name = <span class="tok-str">"gfx802"</span>,</span>
<span class="line" id="L1621"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1622"> .ldsbankcount32,</span>
<span class="line" id="L1623"> .sgpr_init_bug,</span>
<span class="line" id="L1624"> .unpacked_d16_vmem,</span>
<span class="line" id="L1625"> .volcanic_islands,</span>
<span class="line" id="L1626"> }),</span>
<span class="line" id="L1627"> };</span>
<span class="line" id="L1628"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx803 = CpuModel{</span>
<span class="line" id="L1629"> .name = <span class="tok-str">"gfx803"</span>,</span>
<span class="line" id="L1630"> .llvm_name = <span class="tok-str">"gfx803"</span>,</span>
<span class="line" id="L1631"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1632"> .ldsbankcount32,</span>
<span class="line" id="L1633"> .unpacked_d16_vmem,</span>
<span class="line" id="L1634"> .volcanic_islands,</span>
<span class="line" id="L1635"> }),</span>
<span class="line" id="L1636"> };</span>
<span class="line" id="L1637"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx805 = CpuModel{</span>
<span class="line" id="L1638"> .name = <span class="tok-str">"gfx805"</span>,</span>
<span class="line" id="L1639"> .llvm_name = <span class="tok-str">"gfx805"</span>,</span>
<span class="line" id="L1640"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1641"> .ldsbankcount32,</span>
<span class="line" id="L1642"> .sgpr_init_bug,</span>
<span class="line" id="L1643"> .unpacked_d16_vmem,</span>
<span class="line" id="L1644"> .volcanic_islands,</span>
<span class="line" id="L1645"> }),</span>
<span class="line" id="L1646"> };</span>
<span class="line" id="L1647"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx810 = CpuModel{</span>
<span class="line" id="L1648"> .name = <span class="tok-str">"gfx810"</span>,</span>
<span class="line" id="L1649"> .llvm_name = <span class="tok-str">"gfx810"</span>,</span>
<span class="line" id="L1650"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1651"> .image_gather4_d16_bug,</span>
<span class="line" id="L1652"> .image_store_d16_bug,</span>
<span class="line" id="L1653"> .ldsbankcount16,</span>
<span class="line" id="L1654"> .volcanic_islands,</span>
<span class="line" id="L1655"> .xnack_support,</span>
<span class="line" id="L1656"> }),</span>
<span class="line" id="L1657"> };</span>
<span class="line" id="L1658"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx900 = CpuModel{</span>
<span class="line" id="L1659"> .name = <span class="tok-str">"gfx900"</span>,</span>
<span class="line" id="L1660"> .llvm_name = <span class="tok-str">"gfx900"</span>,</span>
<span class="line" id="L1661"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1662"> .ds_src2_insts,</span>
<span class="line" id="L1663"> .extended_image_insts,</span>
<span class="line" id="L1664"> .gfx9,</span>
<span class="line" id="L1665"> .image_gather4_d16_bug,</span>
<span class="line" id="L1666"> .image_insts,</span>
<span class="line" id="L1667"> .ldsbankcount32,</span>
<span class="line" id="L1668"> .mad_mac_f32_insts,</span>
<span class="line" id="L1669"> .mad_mix_insts,</span>
<span class="line" id="L1670"> }),</span>
<span class="line" id="L1671"> };</span>
<span class="line" id="L1672"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx902 = CpuModel{</span>
<span class="line" id="L1673"> .name = <span class="tok-str">"gfx902"</span>,</span>
<span class="line" id="L1674"> .llvm_name = <span class="tok-str">"gfx902"</span>,</span>
<span class="line" id="L1675"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1676"> .ds_src2_insts,</span>
<span class="line" id="L1677"> .extended_image_insts,</span>
<span class="line" id="L1678"> .gfx9,</span>
<span class="line" id="L1679"> .image_gather4_d16_bug,</span>
<span class="line" id="L1680"> .image_insts,</span>
<span class="line" id="L1681"> .ldsbankcount32,</span>
<span class="line" id="L1682"> .mad_mac_f32_insts,</span>
<span class="line" id="L1683"> .mad_mix_insts,</span>
<span class="line" id="L1684"> }),</span>
<span class="line" id="L1685"> };</span>
<span class="line" id="L1686"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx904 = CpuModel{</span>
<span class="line" id="L1687"> .name = <span class="tok-str">"gfx904"</span>,</span>
<span class="line" id="L1688"> .llvm_name = <span class="tok-str">"gfx904"</span>,</span>
<span class="line" id="L1689"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1690"> .ds_src2_insts,</span>
<span class="line" id="L1691"> .extended_image_insts,</span>
<span class="line" id="L1692"> .fma_mix_insts,</span>
<span class="line" id="L1693"> .gfx9,</span>
<span class="line" id="L1694"> .image_gather4_d16_bug,</span>
<span class="line" id="L1695"> .image_insts,</span>
<span class="line" id="L1696"> .ldsbankcount32,</span>
<span class="line" id="L1697"> .mad_mac_f32_insts,</span>
<span class="line" id="L1698"> }),</span>
<span class="line" id="L1699"> };</span>
<span class="line" id="L1700"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx906 = CpuModel{</span>
<span class="line" id="L1701"> .name = <span class="tok-str">"gfx906"</span>,</span>
<span class="line" id="L1702"> .llvm_name = <span class="tok-str">"gfx906"</span>,</span>
<span class="line" id="L1703"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1704"> .dl_insts,</span>
<span class="line" id="L1705"> .dot1_insts,</span>
<span class="line" id="L1706"> .dot2_insts,</span>
<span class="line" id="L1707"> .dot7_insts,</span>
<span class="line" id="L1708"> .ds_src2_insts,</span>
<span class="line" id="L1709"> .extended_image_insts,</span>
<span class="line" id="L1710"> .fma_mix_insts,</span>
<span class="line" id="L1711"> .gfx9,</span>
<span class="line" id="L1712"> .half_rate_64_ops,</span>
<span class="line" id="L1713"> .image_gather4_d16_bug,</span>
<span class="line" id="L1714"> .image_insts,</span>
<span class="line" id="L1715"> .ldsbankcount32,</span>
<span class="line" id="L1716"> .mad_mac_f32_insts,</span>
<span class="line" id="L1717"> .sramecc_support,</span>
<span class="line" id="L1718"> }),</span>
<span class="line" id="L1719"> };</span>
<span class="line" id="L1720"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx908 = CpuModel{</span>
<span class="line" id="L1721"> .name = <span class="tok-str">"gfx908"</span>,</span>
<span class="line" id="L1722"> .llvm_name = <span class="tok-str">"gfx908"</span>,</span>
<span class="line" id="L1723"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1724"> .atomic_fadd_no_rtn_insts,</span>
<span class="line" id="L1725"> .atomic_pk_fadd_no_rtn_insts,</span>
<span class="line" id="L1726"> .dl_insts,</span>
<span class="line" id="L1727"> .dot1_insts,</span>
<span class="line" id="L1728"> .dot2_insts,</span>
<span class="line" id="L1729"> .dot3_insts,</span>
<span class="line" id="L1730"> .dot4_insts,</span>
<span class="line" id="L1731"> .dot5_insts,</span>
<span class="line" id="L1732"> .dot6_insts,</span>
<span class="line" id="L1733"> .dot7_insts,</span>
<span class="line" id="L1734"> .ds_src2_insts,</span>
<span class="line" id="L1735"> .extended_image_insts,</span>
<span class="line" id="L1736"> .fma_mix_insts,</span>
<span class="line" id="L1737"> .gfx9,</span>
<span class="line" id="L1738"> .half_rate_64_ops,</span>
<span class="line" id="L1739"> .image_gather4_d16_bug,</span>
<span class="line" id="L1740"> .image_insts,</span>
<span class="line" id="L1741"> .ldsbankcount32,</span>
<span class="line" id="L1742"> .mad_mac_f32_insts,</span>
<span class="line" id="L1743"> .mai_insts,</span>
<span class="line" id="L1744"> .mfma_inline_literal_bug,</span>
<span class="line" id="L1745"> .pk_fmac_f16_inst,</span>
<span class="line" id="L1746"> .sramecc_support,</span>
<span class="line" id="L1747"> }),</span>
<span class="line" id="L1748"> };</span>
<span class="line" id="L1749"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx909 = CpuModel{</span>
<span class="line" id="L1750"> .name = <span class="tok-str">"gfx909"</span>,</span>
<span class="line" id="L1751"> .llvm_name = <span class="tok-str">"gfx909"</span>,</span>
<span class="line" id="L1752"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1753"> .ds_src2_insts,</span>
<span class="line" id="L1754"> .extended_image_insts,</span>
<span class="line" id="L1755"> .gfx9,</span>
<span class="line" id="L1756"> .image_gather4_d16_bug,</span>
<span class="line" id="L1757"> .image_insts,</span>
<span class="line" id="L1758"> .ldsbankcount32,</span>
<span class="line" id="L1759"> .mad_mac_f32_insts,</span>
<span class="line" id="L1760"> .mad_mix_insts,</span>
<span class="line" id="L1761"> }),</span>
<span class="line" id="L1762"> };</span>
<span class="line" id="L1763"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx90a = CpuModel{</span>
<span class="line" id="L1764"> .name = <span class="tok-str">"gfx90a"</span>,</span>
<span class="line" id="L1765"> .llvm_name = <span class="tok-str">"gfx90a"</span>,</span>
<span class="line" id="L1766"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1767"> .atomic_fadd_no_rtn_insts,</span>
<span class="line" id="L1768"> .atomic_fadd_rtn_insts,</span>
<span class="line" id="L1769"> .atomic_pk_fadd_no_rtn_insts,</span>
<span class="line" id="L1770"> .back_off_barrier,</span>
<span class="line" id="L1771"> .dl_insts,</span>
<span class="line" id="L1772"> .dot1_insts,</span>
<span class="line" id="L1773"> .dot2_insts,</span>
<span class="line" id="L1774"> .dot3_insts,</span>
<span class="line" id="L1775"> .dot4_insts,</span>
<span class="line" id="L1776"> .dot5_insts,</span>
<span class="line" id="L1777"> .dot6_insts,</span>
<span class="line" id="L1778"> .dot7_insts,</span>
<span class="line" id="L1779"> .dpp_64bit,</span>
<span class="line" id="L1780"> .fma_mix_insts,</span>
<span class="line" id="L1781"> .fmacf64_inst,</span>
<span class="line" id="L1782"> .full_rate_64_ops,</span>
<span class="line" id="L1783"> .gfx9,</span>
<span class="line" id="L1784"> .gfx90a_insts,</span>
<span class="line" id="L1785"> .image_insts,</span>
<span class="line" id="L1786"> .ldsbankcount32,</span>
<span class="line" id="L1787"> .mad_mac_f32_insts,</span>
<span class="line" id="L1788"> .mai_insts,</span>
<span class="line" id="L1789"> .packed_fp32_ops,</span>
<span class="line" id="L1790"> .packed_tid,</span>
<span class="line" id="L1791"> .pk_fmac_f16_inst,</span>
<span class="line" id="L1792"> .sramecc_support,</span>
<span class="line" id="L1793"> }),</span>
<span class="line" id="L1794"> };</span>
<span class="line" id="L1795"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx90c = CpuModel{</span>
<span class="line" id="L1796"> .name = <span class="tok-str">"gfx90c"</span>,</span>
<span class="line" id="L1797"> .llvm_name = <span class="tok-str">"gfx90c"</span>,</span>
<span class="line" id="L1798"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1799"> .ds_src2_insts,</span>
<span class="line" id="L1800"> .extended_image_insts,</span>
<span class="line" id="L1801"> .gfx9,</span>
<span class="line" id="L1802"> .image_gather4_d16_bug,</span>
<span class="line" id="L1803"> .image_insts,</span>
<span class="line" id="L1804"> .ldsbankcount32,</span>
<span class="line" id="L1805"> .mad_mac_f32_insts,</span>
<span class="line" id="L1806"> .mad_mix_insts,</span>
<span class="line" id="L1807"> }),</span>
<span class="line" id="L1808"> };</span>
<span class="line" id="L1809"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> gfx940 = CpuModel{</span>
<span class="line" id="L1810"> .name = <span class="tok-str">"gfx940"</span>,</span>
<span class="line" id="L1811"> .llvm_name = <span class="tok-str">"gfx940"</span>,</span>
<span class="line" id="L1812"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1813"> .architected_flat_scratch,</span>
<span class="line" id="L1814"> .atomic_fadd_no_rtn_insts,</span>
<span class="line" id="L1815"> .atomic_fadd_rtn_insts,</span>
<span class="line" id="L1816"> .atomic_pk_fadd_no_rtn_insts,</span>
<span class="line" id="L1817"> .back_off_barrier,</span>
<span class="line" id="L1818"> .dl_insts,</span>
<span class="line" id="L1819"> .dot1_insts,</span>
<span class="line" id="L1820"> .dot2_insts,</span>
<span class="line" id="L1821"> .dot3_insts,</span>
<span class="line" id="L1822"> .dot4_insts,</span>
<span class="line" id="L1823"> .dot5_insts,</span>
<span class="line" id="L1824"> .dot6_insts,</span>
<span class="line" id="L1825"> .dot7_insts,</span>
<span class="line" id="L1826"> .dpp_64bit,</span>
<span class="line" id="L1827"> .flat_atomic_fadd_f32_inst,</span>
<span class="line" id="L1828"> .fma_mix_insts,</span>
<span class="line" id="L1829"> .fmacf64_inst,</span>
<span class="line" id="L1830"> .fp8_insts,</span>
<span class="line" id="L1831"> .full_rate_64_ops,</span>
<span class="line" id="L1832"> .gfx9,</span>
<span class="line" id="L1833"> .gfx90a_insts,</span>
<span class="line" id="L1834"> .gfx940_insts,</span>
<span class="line" id="L1835"> .ldsbankcount32,</span>
<span class="line" id="L1836"> .mai_insts,</span>
<span class="line" id="L1837"> .packed_fp32_ops,</span>
<span class="line" id="L1838"> .packed_tid,</span>
<span class="line" id="L1839"> .pk_fmac_f16_inst,</span>
<span class="line" id="L1840"> .sramecc_support,</span>
<span class="line" id="L1841"> }),</span>
<span class="line" id="L1842"> };</span>
<span class="line" id="L1843"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> hainan = CpuModel{</span>
<span class="line" id="L1844"> .name = <span class="tok-str">"hainan"</span>,</span>
<span class="line" id="L1845"> .llvm_name = <span class="tok-str">"hainan"</span>,</span>
<span class="line" id="L1846"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1847"> .southern_islands,</span>
<span class="line" id="L1848"> }),</span>
<span class="line" id="L1849"> };</span>
<span class="line" id="L1850"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> hawaii = CpuModel{</span>
<span class="line" id="L1851"> .name = <span class="tok-str">"hawaii"</span>,</span>
<span class="line" id="L1852"> .llvm_name = <span class="tok-str">"hawaii"</span>,</span>
<span class="line" id="L1853"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1854"> .fast_fmaf,</span>
<span class="line" id="L1855"> .half_rate_64_ops,</span>
<span class="line" id="L1856"> .ldsbankcount32,</span>
<span class="line" id="L1857"> .sea_islands,</span>
<span class="line" id="L1858"> }),</span>
<span class="line" id="L1859"> };</span>
<span class="line" id="L1860"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> iceland = CpuModel{</span>
<span class="line" id="L1861"> .name = <span class="tok-str">"iceland"</span>,</span>
<span class="line" id="L1862"> .llvm_name = <span class="tok-str">"iceland"</span>,</span>
<span class="line" id="L1863"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1864"> .ldsbankcount32,</span>
<span class="line" id="L1865"> .sgpr_init_bug,</span>
<span class="line" id="L1866"> .unpacked_d16_vmem,</span>
<span class="line" id="L1867"> .volcanic_islands,</span>
<span class="line" id="L1868"> }),</span>
<span class="line" id="L1869"> };</span>
<span class="line" id="L1870"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> kabini = CpuModel{</span>
<span class="line" id="L1871"> .name = <span class="tok-str">"kabini"</span>,</span>
<span class="line" id="L1872"> .llvm_name = <span class="tok-str">"kabini"</span>,</span>
<span class="line" id="L1873"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1874"> .ldsbankcount16,</span>
<span class="line" id="L1875"> .sea_islands,</span>
<span class="line" id="L1876"> }),</span>
<span class="line" id="L1877"> };</span>
<span class="line" id="L1878"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> kaveri = CpuModel{</span>
<span class="line" id="L1879"> .name = <span class="tok-str">"kaveri"</span>,</span>
<span class="line" id="L1880"> .llvm_name = <span class="tok-str">"kaveri"</span>,</span>
<span class="line" id="L1881"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1882"> .ldsbankcount32,</span>
<span class="line" id="L1883"> .sea_islands,</span>
<span class="line" id="L1884"> }),</span>
<span class="line" id="L1885"> };</span>
<span class="line" id="L1886"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> mullins = CpuModel{</span>
<span class="line" id="L1887"> .name = <span class="tok-str">"mullins"</span>,</span>
<span class="line" id="L1888"> .llvm_name = <span class="tok-str">"mullins"</span>,</span>
<span class="line" id="L1889"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1890"> .ldsbankcount16,</span>
<span class="line" id="L1891"> .sea_islands,</span>
<span class="line" id="L1892"> }),</span>
<span class="line" id="L1893"> };</span>
<span class="line" id="L1894"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> oland = CpuModel{</span>
<span class="line" id="L1895"> .name = <span class="tok-str">"oland"</span>,</span>
<span class="line" id="L1896"> .llvm_name = <span class="tok-str">"oland"</span>,</span>
<span class="line" id="L1897"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1898"> .southern_islands,</span>
<span class="line" id="L1899"> }),</span>
<span class="line" id="L1900"> };</span>
<span class="line" id="L1901"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> pitcairn = CpuModel{</span>
<span class="line" id="L1902"> .name = <span class="tok-str">"pitcairn"</span>,</span>
<span class="line" id="L1903"> .llvm_name = <span class="tok-str">"pitcairn"</span>,</span>
<span class="line" id="L1904"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1905"> .southern_islands,</span>
<span class="line" id="L1906"> }),</span>
<span class="line" id="L1907"> };</span>
<span class="line" id="L1908"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> polaris10 = CpuModel{</span>
<span class="line" id="L1909"> .name = <span class="tok-str">"polaris10"</span>,</span>
<span class="line" id="L1910"> .llvm_name = <span class="tok-str">"polaris10"</span>,</span>
<span class="line" id="L1911"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1912"> .ldsbankcount32,</span>
<span class="line" id="L1913"> .unpacked_d16_vmem,</span>
<span class="line" id="L1914"> .volcanic_islands,</span>
<span class="line" id="L1915"> }),</span>
<span class="line" id="L1916"> };</span>
<span class="line" id="L1917"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> polaris11 = CpuModel{</span>
<span class="line" id="L1918"> .name = <span class="tok-str">"polaris11"</span>,</span>
<span class="line" id="L1919"> .llvm_name = <span class="tok-str">"polaris11"</span>,</span>
<span class="line" id="L1920"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1921"> .ldsbankcount32,</span>
<span class="line" id="L1922"> .unpacked_d16_vmem,</span>
<span class="line" id="L1923"> .volcanic_islands,</span>
<span class="line" id="L1924"> }),</span>
<span class="line" id="L1925"> };</span>
<span class="line" id="L1926"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> stoney = CpuModel{</span>
<span class="line" id="L1927"> .name = <span class="tok-str">"stoney"</span>,</span>
<span class="line" id="L1928"> .llvm_name = <span class="tok-str">"stoney"</span>,</span>
<span class="line" id="L1929"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1930"> .image_gather4_d16_bug,</span>
<span class="line" id="L1931"> .image_store_d16_bug,</span>
<span class="line" id="L1932"> .ldsbankcount16,</span>
<span class="line" id="L1933"> .volcanic_islands,</span>
<span class="line" id="L1934"> .xnack_support,</span>
<span class="line" id="L1935"> }),</span>
<span class="line" id="L1936"> };</span>
<span class="line" id="L1937"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> tahiti = CpuModel{</span>
<span class="line" id="L1938"> .name = <span class="tok-str">"tahiti"</span>,</span>
<span class="line" id="L1939"> .llvm_name = <span class="tok-str">"tahiti"</span>,</span>
<span class="line" id="L1940"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1941"> .fast_fmaf,</span>
<span class="line" id="L1942"> .half_rate_64_ops,</span>
<span class="line" id="L1943"> .southern_islands,</span>
<span class="line" id="L1944"> }),</span>
<span class="line" id="L1945"> };</span>
<span class="line" id="L1946"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> tonga = CpuModel{</span>
<span class="line" id="L1947"> .name = <span class="tok-str">"tonga"</span>,</span>
<span class="line" id="L1948"> .llvm_name = <span class="tok-str">"tonga"</span>,</span>
<span class="line" id="L1949"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1950"> .ldsbankcount32,</span>
<span class="line" id="L1951"> .sgpr_init_bug,</span>
<span class="line" id="L1952"> .unpacked_d16_vmem,</span>
<span class="line" id="L1953"> .volcanic_islands,</span>
<span class="line" id="L1954"> }),</span>
<span class="line" id="L1955"> };</span>
<span class="line" id="L1956"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> tongapro = CpuModel{</span>
<span class="line" id="L1957"> .name = <span class="tok-str">"tongapro"</span>,</span>
<span class="line" id="L1958"> .llvm_name = <span class="tok-str">"tongapro"</span>,</span>
<span class="line" id="L1959"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1960"> .ldsbankcount32,</span>
<span class="line" id="L1961"> .sgpr_init_bug,</span>
<span class="line" id="L1962"> .unpacked_d16_vmem,</span>
<span class="line" id="L1963"> .volcanic_islands,</span>
<span class="line" id="L1964"> }),</span>
<span class="line" id="L1965"> };</span>
<span class="line" id="L1966"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> verde = CpuModel{</span>
<span class="line" id="L1967"> .name = <span class="tok-str">"verde"</span>,</span>
<span class="line" id="L1968"> .llvm_name = <span class="tok-str">"verde"</span>,</span>
<span class="line" id="L1969"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1970"> .southern_islands,</span>
<span class="line" id="L1971"> }),</span>
<span class="line" id="L1972"> };</span>
<span class="line" id="L1973">};</span>
<span class="line" id="L1974"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! This file is auto-generated by tools/update_cpu_features.zig.</span></span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L4"><span class="tok-kw">const</span> CpuFeature = std.Target.Cpu.Feature;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> CpuModel = std.Target.Cpu.Model;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Feature = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L8"> audio,</span>
<span class="line" id="L9"> cabac,</span>
<span class="line" id="L10"> compound,</span>
<span class="line" id="L11"> duplex,</span>
<span class="line" id="L12"> hvx,</span>
<span class="line" id="L13"> hvx_ieee_fp,</span>
<span class="line" id="L14"> hvx_length128b,</span>
<span class="line" id="L15"> hvx_length64b,</span>
<span class="line" id="L16"> hvx_qfloat,</span>
<span class="line" id="L17"> hvxv60,</span>
<span class="line" id="L18"> hvxv62,</span>
<span class="line" id="L19"> hvxv65,</span>
<span class="line" id="L20"> hvxv66,</span>
<span class="line" id="L21"> hvxv67,</span>
<span class="line" id="L22"> hvxv68,</span>
<span class="line" id="L23"> hvxv69,</span>
<span class="line" id="L24"> hvxv71,</span>
<span class="line" id="L25"> hvxv73,</span>
<span class="line" id="L26"> long_calls,</span>
<span class="line" id="L27"> mem_noshuf,</span>
<span class="line" id="L28"> memops,</span>
<span class="line" id="L29"> noreturn_stack_elim,</span>
<span class="line" id="L30"> nvj,</span>
<span class="line" id="L31"> nvs,</span>
<span class="line" id="L32"> packets,</span>
<span class="line" id="L33"> prev65,</span>
<span class="line" id="L34"> reserved_r19,</span>
<span class="line" id="L35"> small_data,</span>
<span class="line" id="L36"> tinycore,</span>
<span class="line" id="L37"> unsafe_fp,</span>
<span class="line" id="L38"> v5,</span>
<span class="line" id="L39"> v55,</span>
<span class="line" id="L40"> v60,</span>
<span class="line" id="L41"> v62,</span>
<span class="line" id="L42"> v65,</span>
<span class="line" id="L43"> v66,</span>
<span class="line" id="L44"> v67,</span>
<span class="line" id="L45"> v68,</span>
<span class="line" id="L46"> v69,</span>
<span class="line" id="L47"> v71,</span>
<span class="line" id="L48"> v73,</span>
<span class="line" id="L49"> zreg,</span>
<span class="line" id="L50">};</span>
<span class="line" id="L51"></span>
<span class="line" id="L52"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> featureSet = CpuFeature.feature_set_fns(Feature).featureSet;</span>
<span class="line" id="L53"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> featureSetHas = CpuFeature.feature_set_fns(Feature).featureSetHas;</span>
<span class="line" id="L54"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> featureSetHasAny = CpuFeature.feature_set_fns(Feature).featureSetHasAny;</span>
<span class="line" id="L55"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> featureSetHasAll = CpuFeature.feature_set_fns(Feature).featureSetHasAll;</span>
<span class="line" id="L56"></span>
<span class="line" id="L57"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> all_features = blk: {</span>
<span class="line" id="L58"> <span class="tok-kw">const</span> len = <span class="tok-builtin">@typeInfo</span>(Feature).Enum.fields.len;</span>
<span class="line" id="L59"> std.debug.assert(len <= CpuFeature.Set.needed_bit_count);</span>
<span class="line" id="L60"> <span class="tok-kw">var</span> result: [len]CpuFeature = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L61"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.audio)] = .{</span>
<span class="line" id="L62"> .llvm_name = <span class="tok-str">"audio"</span>,</span>
<span class="line" id="L63"> .description = <span class="tok-str">"Hexagon Audio extension instructions"</span>,</span>
<span class="line" id="L64"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L65"> };</span>
<span class="line" id="L66"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.cabac)] = .{</span>
<span class="line" id="L67"> .llvm_name = <span class="tok-str">"cabac"</span>,</span>
<span class="line" id="L68"> .description = <span class="tok-str">"Emit the CABAC instruction"</span>,</span>
<span class="line" id="L69"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L70"> };</span>
<span class="line" id="L71"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.compound)] = .{</span>
<span class="line" id="L72"> .llvm_name = <span class="tok-str">"compound"</span>,</span>
<span class="line" id="L73"> .description = <span class="tok-str">"Use compound instructions"</span>,</span>
<span class="line" id="L74"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L75"> };</span>
<span class="line" id="L76"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.duplex)] = .{</span>
<span class="line" id="L77"> .llvm_name = <span class="tok-str">"duplex"</span>,</span>
<span class="line" id="L78"> .description = <span class="tok-str">"Enable generation of duplex instruction"</span>,</span>
<span class="line" id="L79"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L80"> };</span>
<span class="line" id="L81"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.hvx)] = .{</span>
<span class="line" id="L82"> .llvm_name = <span class="tok-str">"hvx"</span>,</span>
<span class="line" id="L83"> .description = <span class="tok-str">"Hexagon HVX instructions"</span>,</span>
<span class="line" id="L84"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L85"> };</span>
<span class="line" id="L86"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.hvx_ieee_fp)] = .{</span>
<span class="line" id="L87"> .llvm_name = <span class="tok-str">"hvx-ieee-fp"</span>,</span>
<span class="line" id="L88"> .description = <span class="tok-str">"Hexagon HVX IEEE floating point instructions"</span>,</span>
<span class="line" id="L89"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L90"> };</span>
<span class="line" id="L91"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.hvx_length128b)] = .{</span>
<span class="line" id="L92"> .llvm_name = <span class="tok-str">"hvx-length128b"</span>,</span>
<span class="line" id="L93"> .description = <span class="tok-str">"Hexagon HVX 128B instructions"</span>,</span>
<span class="line" id="L94"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L95"> .hvx,</span>
<span class="line" id="L96"> }),</span>
<span class="line" id="L97"> };</span>
<span class="line" id="L98"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.hvx_length64b)] = .{</span>
<span class="line" id="L99"> .llvm_name = <span class="tok-str">"hvx-length64b"</span>,</span>
<span class="line" id="L100"> .description = <span class="tok-str">"Hexagon HVX 64B instructions"</span>,</span>
<span class="line" id="L101"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L102"> .hvx,</span>
<span class="line" id="L103"> }),</span>
<span class="line" id="L104"> };</span>
<span class="line" id="L105"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.hvx_qfloat)] = .{</span>
<span class="line" id="L106"> .llvm_name = <span class="tok-str">"hvx-qfloat"</span>,</span>
<span class="line" id="L107"> .description = <span class="tok-str">"Hexagon HVX QFloating point instructions"</span>,</span>
<span class="line" id="L108"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L109"> };</span>
<span class="line" id="L110"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.hvxv60)] = .{</span>
<span class="line" id="L111"> .llvm_name = <span class="tok-str">"hvxv60"</span>,</span>
<span class="line" id="L112"> .description = <span class="tok-str">"Hexagon HVX instructions"</span>,</span>
<span class="line" id="L113"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L114"> .hvx,</span>
<span class="line" id="L115"> }),</span>
<span class="line" id="L116"> };</span>
<span class="line" id="L117"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.hvxv62)] = .{</span>
<span class="line" id="L118"> .llvm_name = <span class="tok-str">"hvxv62"</span>,</span>
<span class="line" id="L119"> .description = <span class="tok-str">"Hexagon HVX instructions"</span>,</span>
<span class="line" id="L120"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L121"> .hvxv60,</span>
<span class="line" id="L122"> }),</span>
<span class="line" id="L123"> };</span>
<span class="line" id="L124"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.hvxv65)] = .{</span>
<span class="line" id="L125"> .llvm_name = <span class="tok-str">"hvxv65"</span>,</span>
<span class="line" id="L126"> .description = <span class="tok-str">"Hexagon HVX instructions"</span>,</span>
<span class="line" id="L127"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L128"> .hvxv62,</span>
<span class="line" id="L129"> }),</span>
<span class="line" id="L130"> };</span>
<span class="line" id="L131"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.hvxv66)] = .{</span>
<span class="line" id="L132"> .llvm_name = <span class="tok-str">"hvxv66"</span>,</span>
<span class="line" id="L133"> .description = <span class="tok-str">"Hexagon HVX instructions"</span>,</span>
<span class="line" id="L134"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L135"> .hvxv65,</span>
<span class="line" id="L136"> .zreg,</span>
<span class="line" id="L137"> }),</span>
<span class="line" id="L138"> };</span>
<span class="line" id="L139"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.hvxv67)] = .{</span>
<span class="line" id="L140"> .llvm_name = <span class="tok-str">"hvxv67"</span>,</span>
<span class="line" id="L141"> .description = <span class="tok-str">"Hexagon HVX instructions"</span>,</span>
<span class="line" id="L142"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L143"> .hvxv66,</span>
<span class="line" id="L144"> }),</span>
<span class="line" id="L145"> };</span>
<span class="line" id="L146"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.hvxv68)] = .{</span>
<span class="line" id="L147"> .llvm_name = <span class="tok-str">"hvxv68"</span>,</span>
<span class="line" id="L148"> .description = <span class="tok-str">"Hexagon HVX instructions"</span>,</span>
<span class="line" id="L149"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L150"> .hvxv67,</span>
<span class="line" id="L151"> }),</span>
<span class="line" id="L152"> };</span>
<span class="line" id="L153"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.hvxv69)] = .{</span>
<span class="line" id="L154"> .llvm_name = <span class="tok-str">"hvxv69"</span>,</span>
<span class="line" id="L155"> .description = <span class="tok-str">"Hexagon HVX instructions"</span>,</span>
<span class="line" id="L156"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L157"> .hvxv68,</span>
<span class="line" id="L158"> }),</span>
<span class="line" id="L159"> };</span>
<span class="line" id="L160"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.hvxv71)] = .{</span>
<span class="line" id="L161"> .llvm_name = <span class="tok-str">"hvxv71"</span>,</span>
<span class="line" id="L162"> .description = <span class="tok-str">"Hexagon HVX instructions"</span>,</span>
<span class="line" id="L163"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L164"> .hvxv69,</span>
<span class="line" id="L165"> }),</span>
<span class="line" id="L166"> };</span>
<span class="line" id="L167"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.hvxv73)] = .{</span>
<span class="line" id="L168"> .llvm_name = <span class="tok-str">"hvxv73"</span>,</span>
<span class="line" id="L169"> .description = <span class="tok-str">"Hexagon HVX instructions"</span>,</span>
<span class="line" id="L170"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L171"> .hvxv71,</span>
<span class="line" id="L172"> }),</span>
<span class="line" id="L173"> };</span>
<span class="line" id="L174"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.long_calls)] = .{</span>
<span class="line" id="L175"> .llvm_name = <span class="tok-str">"long-calls"</span>,</span>
<span class="line" id="L176"> .description = <span class="tok-str">"Use constant-extended calls"</span>,</span>
<span class="line" id="L177"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L178"> };</span>
<span class="line" id="L179"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.mem_noshuf)] = .{</span>
<span class="line" id="L180"> .llvm_name = <span class="tok-str">"mem_noshuf"</span>,</span>
<span class="line" id="L181"> .description = <span class="tok-str">"Supports mem_noshuf feature"</span>,</span>
<span class="line" id="L182"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L183"> };</span>
<span class="line" id="L184"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.memops)] = .{</span>
<span class="line" id="L185"> .llvm_name = <span class="tok-str">"memops"</span>,</span>
<span class="line" id="L186"> .description = <span class="tok-str">"Use memop instructions"</span>,</span>
<span class="line" id="L187"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L188"> };</span>
<span class="line" id="L189"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.noreturn_stack_elim)] = .{</span>
<span class="line" id="L190"> .llvm_name = <span class="tok-str">"noreturn-stack-elim"</span>,</span>
<span class="line" id="L191"> .description = <span class="tok-str">"Eliminate stack allocation in a noreturn function when possible"</span>,</span>
<span class="line" id="L192"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L193"> };</span>
<span class="line" id="L194"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.nvj)] = .{</span>
<span class="line" id="L195"> .llvm_name = <span class="tok-str">"nvj"</span>,</span>
<span class="line" id="L196"> .description = <span class="tok-str">"Support for new-value jumps"</span>,</span>
<span class="line" id="L197"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L198"> .packets,</span>
<span class="line" id="L199"> }),</span>
<span class="line" id="L200"> };</span>
<span class="line" id="L201"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.nvs)] = .{</span>
<span class="line" id="L202"> .llvm_name = <span class="tok-str">"nvs"</span>,</span>
<span class="line" id="L203"> .description = <span class="tok-str">"Support for new-value stores"</span>,</span>
<span class="line" id="L204"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L205"> .packets,</span>
<span class="line" id="L206"> }),</span>
<span class="line" id="L207"> };</span>
<span class="line" id="L208"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.packets)] = .{</span>
<span class="line" id="L209"> .llvm_name = <span class="tok-str">"packets"</span>,</span>
<span class="line" id="L210"> .description = <span class="tok-str">"Support for instruction packets"</span>,</span>
<span class="line" id="L211"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L212"> };</span>
<span class="line" id="L213"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.prev65)] = .{</span>
<span class="line" id="L214"> .llvm_name = <span class="tok-str">"prev65"</span>,</span>
<span class="line" id="L215"> .description = <span class="tok-str">"Support features deprecated in v65"</span>,</span>
<span class="line" id="L216"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L217"> };</span>
<span class="line" id="L218"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.reserved_r19)] = .{</span>
<span class="line" id="L219"> .llvm_name = <span class="tok-str">"reserved-r19"</span>,</span>
<span class="line" id="L220"> .description = <span class="tok-str">"Reserve register R19"</span>,</span>
<span class="line" id="L221"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L222"> };</span>
<span class="line" id="L223"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.small_data)] = .{</span>
<span class="line" id="L224"> .llvm_name = <span class="tok-str">"small-data"</span>,</span>
<span class="line" id="L225"> .description = <span class="tok-str">"Allow GP-relative addressing of global variables"</span>,</span>
<span class="line" id="L226"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L227"> };</span>
<span class="line" id="L228"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.tinycore)] = .{</span>
<span class="line" id="L229"> .llvm_name = <span class="tok-str">"tinycore"</span>,</span>
<span class="line" id="L230"> .description = <span class="tok-str">"Hexagon Tiny Core"</span>,</span>
<span class="line" id="L231"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L232"> };</span>
<span class="line" id="L233"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.unsafe_fp)] = .{</span>
<span class="line" id="L234"> .llvm_name = <span class="tok-str">"unsafe-fp"</span>,</span>
<span class="line" id="L235"> .description = <span class="tok-str">"Use unsafe FP math"</span>,</span>
<span class="line" id="L236"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L237"> };</span>
<span class="line" id="L238"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.v5)] = .{</span>
<span class="line" id="L239"> .llvm_name = <span class="tok-str">"v5"</span>,</span>
<span class="line" id="L240"> .description = <span class="tok-str">"Enable Hexagon V5 architecture"</span>,</span>
<span class="line" id="L241"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L242"> };</span>
<span class="line" id="L243"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.v55)] = .{</span>
<span class="line" id="L244"> .llvm_name = <span class="tok-str">"v55"</span>,</span>
<span class="line" id="L245"> .description = <span class="tok-str">"Enable Hexagon V55 architecture"</span>,</span>
<span class="line" id="L246"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L247"> };</span>
<span class="line" id="L248"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.v60)] = .{</span>
<span class="line" id="L249"> .llvm_name = <span class="tok-str">"v60"</span>,</span>
<span class="line" id="L250"> .description = <span class="tok-str">"Enable Hexagon V60 architecture"</span>,</span>
<span class="line" id="L251"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L252"> };</span>
<span class="line" id="L253"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.v62)] = .{</span>
<span class="line" id="L254"> .llvm_name = <span class="tok-str">"v62"</span>,</span>
<span class="line" id="L255"> .description = <span class="tok-str">"Enable Hexagon V62 architecture"</span>,</span>
<span class="line" id="L256"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L257"> };</span>
<span class="line" id="L258"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.v65)] = .{</span>
<span class="line" id="L259"> .llvm_name = <span class="tok-str">"v65"</span>,</span>
<span class="line" id="L260"> .description = <span class="tok-str">"Enable Hexagon V65 architecture"</span>,</span>
<span class="line" id="L261"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L262"> };</span>
<span class="line" id="L263"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.v66)] = .{</span>
<span class="line" id="L264"> .llvm_name = <span class="tok-str">"v66"</span>,</span>
<span class="line" id="L265"> .description = <span class="tok-str">"Enable Hexagon V66 architecture"</span>,</span>
<span class="line" id="L266"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L267"> };</span>
<span class="line" id="L268"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.v67)] = .{</span>
<span class="line" id="L269"> .llvm_name = <span class="tok-str">"v67"</span>,</span>
<span class="line" id="L270"> .description = <span class="tok-str">"Enable Hexagon V67 architecture"</span>,</span>
<span class="line" id="L271"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L272"> };</span>
<span class="line" id="L273"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.v68)] = .{</span>
<span class="line" id="L274"> .llvm_name = <span class="tok-str">"v68"</span>,</span>
<span class="line" id="L275"> .description = <span class="tok-str">"Enable Hexagon V68 architecture"</span>,</span>
<span class="line" id="L276"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L277"> };</span>
<span class="line" id="L278"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.v69)] = .{</span>
<span class="line" id="L279"> .llvm_name = <span class="tok-str">"v69"</span>,</span>
<span class="line" id="L280"> .description = <span class="tok-str">"Enable Hexagon V69 architecture"</span>,</span>
<span class="line" id="L281"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L282"> };</span>
<span class="line" id="L283"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.v71)] = .{</span>
<span class="line" id="L284"> .llvm_name = <span class="tok-str">"v71"</span>,</span>
<span class="line" id="L285"> .description = <span class="tok-str">"Enable Hexagon V71 architecture"</span>,</span>
<span class="line" id="L286"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L287"> };</span>
<span class="line" id="L288"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.v73)] = .{</span>
<span class="line" id="L289"> .llvm_name = <span class="tok-str">"v73"</span>,</span>
<span class="line" id="L290"> .description = <span class="tok-str">"Enable Hexagon V73 architecture"</span>,</span>
<span class="line" id="L291"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L292"> };</span>
<span class="line" id="L293"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.zreg)] = .{</span>
<span class="line" id="L294"> .llvm_name = <span class="tok-str">"zreg"</span>,</span>
<span class="line" id="L295"> .description = <span class="tok-str">"Hexagon ZReg extension instructions"</span>,</span>
<span class="line" id="L296"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L297"> };</span>
<span class="line" id="L298"> <span class="tok-kw">const</span> ti = <span class="tok-builtin">@typeInfo</span>(Feature);</span>
<span class="line" id="L299"> <span class="tok-kw">for</span> (&result, <span class="tok-number">0</span>..) |*elem, i| {</span>
<span class="line" id="L300"> elem.index = i;</span>
<span class="line" id="L301"> elem.name = ti.Enum.fields[i].name;</span>
<span class="line" id="L302"> }</span>
<span class="line" id="L303"> <span class="tok-kw">break</span> :blk result;</span>
<span class="line" id="L304">};</span>
<span class="line" id="L305"></span>
<span class="line" id="L306"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> cpu = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L307"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> generic = CpuModel{</span>
<span class="line" id="L308"> .name = <span class="tok-str">"generic"</span>,</span>
<span class="line" id="L309"> .llvm_name = <span class="tok-str">"generic"</span>,</span>
<span class="line" id="L310"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L311"> .cabac,</span>
<span class="line" id="L312"> .compound,</span>
<span class="line" id="L313"> .duplex,</span>
<span class="line" id="L314"> .memops,</span>
<span class="line" id="L315"> .nvj,</span>
<span class="line" id="L316"> .nvs,</span>
<span class="line" id="L317"> .prev65,</span>
<span class="line" id="L318"> .small_data,</span>
<span class="line" id="L319"> .v5,</span>
<span class="line" id="L320"> .v55,</span>
<span class="line" id="L321"> .v60,</span>
<span class="line" id="L322"> }),</span>
<span class="line" id="L323"> };</span>
<span class="line" id="L324"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> hexagonv5 = CpuModel{</span>
<span class="line" id="L325"> .name = <span class="tok-str">"hexagonv5"</span>,</span>
<span class="line" id="L326"> .llvm_name = <span class="tok-str">"hexagonv5"</span>,</span>
<span class="line" id="L327"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L328"> .cabac,</span>
<span class="line" id="L329"> .compound,</span>
<span class="line" id="L330"> .duplex,</span>
<span class="line" id="L331"> .memops,</span>
<span class="line" id="L332"> .nvj,</span>
<span class="line" id="L333"> .nvs,</span>
<span class="line" id="L334"> .prev65,</span>
<span class="line" id="L335"> .small_data,</span>
<span class="line" id="L336"> .v5,</span>
<span class="line" id="L337"> }),</span>
<span class="line" id="L338"> };</span>
<span class="line" id="L339"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> hexagonv55 = CpuModel{</span>
<span class="line" id="L340"> .name = <span class="tok-str">"hexagonv55"</span>,</span>
<span class="line" id="L341"> .llvm_name = <span class="tok-str">"hexagonv55"</span>,</span>
<span class="line" id="L342"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L343"> .cabac,</span>
<span class="line" id="L344"> .compound,</span>
<span class="line" id="L345"> .duplex,</span>
<span class="line" id="L346"> .memops,</span>
<span class="line" id="L347"> .nvj,</span>
<span class="line" id="L348"> .nvs,</span>
<span class="line" id="L349"> .prev65,</span>
<span class="line" id="L350"> .small_data,</span>
<span class="line" id="L351"> .v5,</span>
<span class="line" id="L352"> .v55,</span>
<span class="line" id="L353"> }),</span>
<span class="line" id="L354"> };</span>
<span class="line" id="L355"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> hexagonv60 = CpuModel{</span>
<span class="line" id="L356"> .name = <span class="tok-str">"hexagonv60"</span>,</span>
<span class="line" id="L357"> .llvm_name = <span class="tok-str">"hexagonv60"</span>,</span>
<span class="line" id="L358"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L359"> .cabac,</span>
<span class="line" id="L360"> .compound,</span>
<span class="line" id="L361"> .duplex,</span>
<span class="line" id="L362"> .memops,</span>
<span class="line" id="L363"> .nvj,</span>
<span class="line" id="L364"> .nvs,</span>
<span class="line" id="L365"> .prev65,</span>
<span class="line" id="L366"> .small_data,</span>
<span class="line" id="L367"> .v5,</span>
<span class="line" id="L368"> .v55,</span>
<span class="line" id="L369"> .v60,</span>
<span class="line" id="L370"> }),</span>
<span class="line" id="L371"> };</span>
<span class="line" id="L372"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> hexagonv62 = CpuModel{</span>
<span class="line" id="L373"> .name = <span class="tok-str">"hexagonv62"</span>,</span>
<span class="line" id="L374"> .llvm_name = <span class="tok-str">"hexagonv62"</span>,</span>
<span class="line" id="L375"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L376"> .cabac,</span>
<span class="line" id="L377"> .compound,</span>
<span class="line" id="L378"> .duplex,</span>
<span class="line" id="L379"> .memops,</span>
<span class="line" id="L380"> .nvj,</span>
<span class="line" id="L381"> .nvs,</span>
<span class="line" id="L382"> .prev65,</span>
<span class="line" id="L383"> .small_data,</span>
<span class="line" id="L384"> .v5,</span>
<span class="line" id="L385"> .v55,</span>
<span class="line" id="L386"> .v60,</span>
<span class="line" id="L387"> .v62,</span>
<span class="line" id="L388"> }),</span>
<span class="line" id="L389"> };</span>
<span class="line" id="L390"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> hexagonv65 = CpuModel{</span>
<span class="line" id="L391"> .name = <span class="tok-str">"hexagonv65"</span>,</span>
<span class="line" id="L392"> .llvm_name = <span class="tok-str">"hexagonv65"</span>,</span>
<span class="line" id="L393"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L394"> .cabac,</span>
<span class="line" id="L395"> .compound,</span>
<span class="line" id="L396"> .duplex,</span>
<span class="line" id="L397"> .mem_noshuf,</span>
<span class="line" id="L398"> .memops,</span>
<span class="line" id="L399"> .nvj,</span>
<span class="line" id="L400"> .nvs,</span>
<span class="line" id="L401"> .small_data,</span>
<span class="line" id="L402"> .v5,</span>
<span class="line" id="L403"> .v55,</span>
<span class="line" id="L404"> .v60,</span>
<span class="line" id="L405"> .v62,</span>
<span class="line" id="L406"> .v65,</span>
<span class="line" id="L407"> }),</span>
<span class="line" id="L408"> };</span>
<span class="line" id="L409"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> hexagonv66 = CpuModel{</span>
<span class="line" id="L410"> .name = <span class="tok-str">"hexagonv66"</span>,</span>
<span class="line" id="L411"> .llvm_name = <span class="tok-str">"hexagonv66"</span>,</span>
<span class="line" id="L412"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L413"> .cabac,</span>
<span class="line" id="L414"> .compound,</span>
<span class="line" id="L415"> .duplex,</span>
<span class="line" id="L416"> .mem_noshuf,</span>
<span class="line" id="L417"> .memops,</span>
<span class="line" id="L418"> .nvj,</span>
<span class="line" id="L419"> .nvs,</span>
<span class="line" id="L420"> .small_data,</span>
<span class="line" id="L421"> .v5,</span>
<span class="line" id="L422"> .v55,</span>
<span class="line" id="L423"> .v60,</span>
<span class="line" id="L424"> .v62,</span>
<span class="line" id="L425"> .v65,</span>
<span class="line" id="L426"> .v66,</span>
<span class="line" id="L427"> }),</span>
<span class="line" id="L428"> };</span>
<span class="line" id="L429"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> hexagonv67 = CpuModel{</span>
<span class="line" id="L430"> .name = <span class="tok-str">"hexagonv67"</span>,</span>
<span class="line" id="L431"> .llvm_name = <span class="tok-str">"hexagonv67"</span>,</span>
<span class="line" id="L432"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L433"> .cabac,</span>
<span class="line" id="L434"> .compound,</span>
<span class="line" id="L435"> .duplex,</span>
<span class="line" id="L436"> .mem_noshuf,</span>
<span class="line" id="L437"> .memops,</span>
<span class="line" id="L438"> .nvj,</span>
<span class="line" id="L439"> .nvs,</span>
<span class="line" id="L440"> .small_data,</span>
<span class="line" id="L441"> .v5,</span>
<span class="line" id="L442"> .v55,</span>
<span class="line" id="L443"> .v60,</span>
<span class="line" id="L444"> .v62,</span>
<span class="line" id="L445"> .v65,</span>
<span class="line" id="L446"> .v66,</span>
<span class="line" id="L447"> .v67,</span>
<span class="line" id="L448"> }),</span>
<span class="line" id="L449"> };</span>
<span class="line" id="L450"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> hexagonv67t = CpuModel{</span>
<span class="line" id="L451"> .name = <span class="tok-str">"hexagonv67t"</span>,</span>
<span class="line" id="L452"> .llvm_name = <span class="tok-str">"hexagonv67t"</span>,</span>
<span class="line" id="L453"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L454"> .audio,</span>
<span class="line" id="L455"> .compound,</span>
<span class="line" id="L456"> .mem_noshuf,</span>
<span class="line" id="L457"> .memops,</span>
<span class="line" id="L458"> .nvs,</span>
<span class="line" id="L459"> .small_data,</span>
<span class="line" id="L460"> .tinycore,</span>
<span class="line" id="L461"> .v5,</span>
<span class="line" id="L462"> .v55,</span>
<span class="line" id="L463"> .v60,</span>
<span class="line" id="L464"> .v62,</span>
<span class="line" id="L465"> .v65,</span>
<span class="line" id="L466"> .v66,</span>
<span class="line" id="L467"> .v67,</span>
<span class="line" id="L468"> }),</span>
<span class="line" id="L469"> };</span>
<span class="line" id="L470"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> hexagonv68 = CpuModel{</span>
<span class="line" id="L471"> .name = <span class="tok-str">"hexagonv68"</span>,</span>
<span class="line" id="L472"> .llvm_name = <span class="tok-str">"hexagonv68"</span>,</span>
<span class="line" id="L473"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L474"> .cabac,</span>
<span class="line" id="L475"> .compound,</span>
<span class="line" id="L476"> .duplex,</span>
<span class="line" id="L477"> .mem_noshuf,</span>
<span class="line" id="L478"> .memops,</span>
<span class="line" id="L479"> .nvj,</span>
<span class="line" id="L480"> .nvs,</span>
<span class="line" id="L481"> .small_data,</span>
<span class="line" id="L482"> .v5,</span>
<span class="line" id="L483"> .v55,</span>
<span class="line" id="L484"> .v60,</span>
<span class="line" id="L485"> .v62,</span>
<span class="line" id="L486"> .v65,</span>
<span class="line" id="L487"> .v66,</span>
<span class="line" id="L488"> .v67,</span>
<span class="line" id="L489"> .v68,</span>
<span class="line" id="L490"> }),</span>
<span class="line" id="L491"> };</span>
<span class="line" id="L492"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> hexagonv69 = CpuModel{</span>
<span class="line" id="L493"> .name = <span class="tok-str">"hexagonv69"</span>,</span>
<span class="line" id="L494"> .llvm_name = <span class="tok-str">"hexagonv69"</span>,</span>
<span class="line" id="L495"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L496"> .cabac,</span>
<span class="line" id="L497"> .compound,</span>
<span class="line" id="L498"> .duplex,</span>
<span class="line" id="L499"> .mem_noshuf,</span>
<span class="line" id="L500"> .memops,</span>
<span class="line" id="L501"> .nvj,</span>
<span class="line" id="L502"> .nvs,</span>
<span class="line" id="L503"> .small_data,</span>
<span class="line" id="L504"> .v5,</span>
<span class="line" id="L505"> .v55,</span>
<span class="line" id="L506"> .v60,</span>
<span class="line" id="L507"> .v62,</span>
<span class="line" id="L508"> .v65,</span>
<span class="line" id="L509"> .v66,</span>
<span class="line" id="L510"> .v67,</span>
<span class="line" id="L511"> .v68,</span>
<span class="line" id="L512"> .v69,</span>
<span class="line" id="L513"> }),</span>
<span class="line" id="L514"> };</span>
<span class="line" id="L515"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> hexagonv71 = CpuModel{</span>
<span class="line" id="L516"> .name = <span class="tok-str">"hexagonv71"</span>,</span>
<span class="line" id="L517"> .llvm_name = <span class="tok-str">"hexagonv71"</span>,</span>
<span class="line" id="L518"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L519"> .cabac,</span>
<span class="line" id="L520"> .compound,</span>
<span class="line" id="L521"> .duplex,</span>
<span class="line" id="L522"> .mem_noshuf,</span>
<span class="line" id="L523"> .memops,</span>
<span class="line" id="L524"> .nvj,</span>
<span class="line" id="L525"> .nvs,</span>
<span class="line" id="L526"> .small_data,</span>
<span class="line" id="L527"> .v5,</span>
<span class="line" id="L528"> .v55,</span>
<span class="line" id="L529"> .v60,</span>
<span class="line" id="L530"> .v62,</span>
<span class="line" id="L531"> .v65,</span>
<span class="line" id="L532"> .v66,</span>
<span class="line" id="L533"> .v67,</span>
<span class="line" id="L534"> .v68,</span>
<span class="line" id="L535"> .v69,</span>
<span class="line" id="L536"> .v71,</span>
<span class="line" id="L537"> }),</span>
<span class="line" id="L538"> };</span>
<span class="line" id="L539"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> hexagonv71t = CpuModel{</span>
<span class="line" id="L540"> .name = <span class="tok-str">"hexagonv71t"</span>,</span>
<span class="line" id="L541"> .llvm_name = <span class="tok-str">"hexagonv71t"</span>,</span>
<span class="line" id="L542"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L543"> .audio,</span>
<span class="line" id="L544"> .compound,</span>
<span class="line" id="L545"> .mem_noshuf,</span>
<span class="line" id="L546"> .memops,</span>
<span class="line" id="L547"> .nvs,</span>
<span class="line" id="L548"> .small_data,</span>
<span class="line" id="L549"> .tinycore,</span>
<span class="line" id="L550"> .v5,</span>
<span class="line" id="L551"> .v55,</span>
<span class="line" id="L552"> .v60,</span>
<span class="line" id="L553"> .v62,</span>
<span class="line" id="L554"> .v65,</span>
<span class="line" id="L555"> .v66,</span>
<span class="line" id="L556"> .v67,</span>
<span class="line" id="L557"> .v68,</span>
<span class="line" id="L558"> .v69,</span>
<span class="line" id="L559"> .v71,</span>
<span class="line" id="L560"> }),</span>
<span class="line" id="L561"> };</span>
<span class="line" id="L562"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> hexagonv73 = CpuModel{</span>
<span class="line" id="L563"> .name = <span class="tok-str">"hexagonv73"</span>,</span>
<span class="line" id="L564"> .llvm_name = <span class="tok-str">"hexagonv73"</span>,</span>
<span class="line" id="L565"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L566"> .compound,</span>
<span class="line" id="L567"> .duplex,</span>
<span class="line" id="L568"> .mem_noshuf,</span>
<span class="line" id="L569"> .memops,</span>
<span class="line" id="L570"> .nvj,</span>
<span class="line" id="L571"> .nvs,</span>
<span class="line" id="L572"> .small_data,</span>
<span class="line" id="L573"> .v5,</span>
<span class="line" id="L574"> .v55,</span>
<span class="line" id="L575"> .v60,</span>
<span class="line" id="L576"> .v62,</span>
<span class="line" id="L577"> .v65,</span>
<span class="line" id="L578"> .v66,</span>
<span class="line" id="L579"> .v67,</span>
<span class="line" id="L580"> .v68,</span>
<span class="line" id="L581"> .v69,</span>
<span class="line" id="L582"> .v71,</span>
<span class="line" id="L583"> .v73,</span>
<span class="line" id="L584"> }),</span>
<span class="line" id="L585"> };</span>
<span class="line" id="L586">};</span>
<span class="line" id="L587"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! This file is auto-generated by tools/update_cpu_features.zig.</span></span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L4"><span class="tok-kw">const</span> CpuFeature = std.Target.Cpu.Feature;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> CpuModel = std.Target.Cpu.Model;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Feature = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L8"> bear_enhancement,</span>
<span class="line" id="L9"> deflate_conversion,</span>
<span class="line" id="L10"> dfp_packed_conversion,</span>
<span class="line" id="L11"> dfp_zoned_conversion,</span>
<span class="line" id="L12"> distinct_ops,</span>
<span class="line" id="L13"> enhanced_dat_2,</span>
<span class="line" id="L14"> enhanced_sort,</span>
<span class="line" id="L15"> execution_hint,</span>
<span class="line" id="L16"> fast_serialization,</span>
<span class="line" id="L17"> fp_extension,</span>
<span class="line" id="L18"> guarded_storage,</span>
<span class="line" id="L19"> high_word,</span>
<span class="line" id="L20"> insert_reference_bits_multiple,</span>
<span class="line" id="L21"> interlocked_access1,</span>
<span class="line" id="L22"> load_and_trap,</span>
<span class="line" id="L23"> load_and_zero_rightmost_byte,</span>
<span class="line" id="L24"> load_store_on_cond,</span>
<span class="line" id="L25"> load_store_on_cond_2,</span>
<span class="line" id="L26"> message_security_assist_extension3,</span>
<span class="line" id="L27"> message_security_assist_extension4,</span>
<span class="line" id="L28"> message_security_assist_extension5,</span>
<span class="line" id="L29"> message_security_assist_extension7,</span>
<span class="line" id="L30"> message_security_assist_extension8,</span>
<span class="line" id="L31"> message_security_assist_extension9,</span>
<span class="line" id="L32"> miscellaneous_extensions,</span>
<span class="line" id="L33"> miscellaneous_extensions_2,</span>
<span class="line" id="L34"> miscellaneous_extensions_3,</span>
<span class="line" id="L35"> nnp_assist,</span>
<span class="line" id="L36"> population_count,</span>
<span class="line" id="L37"> processor_activity_instrumentation,</span>
<span class="line" id="L38"> processor_assist,</span>
<span class="line" id="L39"> reset_dat_protection,</span>
<span class="line" id="L40"> reset_reference_bits_multiple,</span>
<span class="line" id="L41"> soft_float,</span>
<span class="line" id="L42"> transactional_execution,</span>
<span class="line" id="L43"> vector,</span>
<span class="line" id="L44"> vector_enhancements_1,</span>
<span class="line" id="L45"> vector_enhancements_2,</span>
<span class="line" id="L46"> vector_packed_decimal,</span>
<span class="line" id="L47"> vector_packed_decimal_enhancement,</span>
<span class="line" id="L48"> vector_packed_decimal_enhancement_2,</span>
<span class="line" id="L49">};</span>
<span class="line" id="L50"></span>
<span class="line" id="L51"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> featureSet = CpuFeature.feature_set_fns(Feature).featureSet;</span>
<span class="line" id="L52"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> featureSetHas = CpuFeature.feature_set_fns(Feature).featureSetHas;</span>
<span class="line" id="L53"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> featureSetHasAny = CpuFeature.feature_set_fns(Feature).featureSetHasAny;</span>
<span class="line" id="L54"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> featureSetHasAll = CpuFeature.feature_set_fns(Feature).featureSetHasAll;</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> all_features = blk: {</span>
<span class="line" id="L57"> <span class="tok-kw">const</span> len = <span class="tok-builtin">@typeInfo</span>(Feature).Enum.fields.len;</span>
<span class="line" id="L58"> std.debug.assert(len <= CpuFeature.Set.needed_bit_count);</span>
<span class="line" id="L59"> <span class="tok-kw">var</span> result: [len]CpuFeature = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L60"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.bear_enhancement)] = .{</span>
<span class="line" id="L61"> .llvm_name = <span class="tok-str">"bear-enhancement"</span>,</span>
<span class="line" id="L62"> .description = <span class="tok-str">"Assume that the BEAR-enhancement facility is installed"</span>,</span>
<span class="line" id="L63"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L64"> };</span>
<span class="line" id="L65"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.deflate_conversion)] = .{</span>
<span class="line" id="L66"> .llvm_name = <span class="tok-str">"deflate-conversion"</span>,</span>
<span class="line" id="L67"> .description = <span class="tok-str">"Assume that the deflate-conversion facility is installed"</span>,</span>
<span class="line" id="L68"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L69"> };</span>
<span class="line" id="L70"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.dfp_packed_conversion)] = .{</span>
<span class="line" id="L71"> .llvm_name = <span class="tok-str">"dfp-packed-conversion"</span>,</span>
<span class="line" id="L72"> .description = <span class="tok-str">"Assume that the DFP packed-conversion facility is installed"</span>,</span>
<span class="line" id="L73"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L74"> };</span>
<span class="line" id="L75"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.dfp_zoned_conversion)] = .{</span>
<span class="line" id="L76"> .llvm_name = <span class="tok-str">"dfp-zoned-conversion"</span>,</span>
<span class="line" id="L77"> .description = <span class="tok-str">"Assume that the DFP zoned-conversion facility is installed"</span>,</span>
<span class="line" id="L78"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L79"> };</span>
<span class="line" id="L80"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.distinct_ops)] = .{</span>
<span class="line" id="L81"> .llvm_name = <span class="tok-str">"distinct-ops"</span>,</span>
<span class="line" id="L82"> .description = <span class="tok-str">"Assume that the distinct-operands facility is installed"</span>,</span>
<span class="line" id="L83"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L84"> };</span>
<span class="line" id="L85"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.enhanced_dat_2)] = .{</span>
<span class="line" id="L86"> .llvm_name = <span class="tok-str">"enhanced-dat-2"</span>,</span>
<span class="line" id="L87"> .description = <span class="tok-str">"Assume that the enhanced-DAT facility 2 is installed"</span>,</span>
<span class="line" id="L88"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L89"> };</span>
<span class="line" id="L90"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.enhanced_sort)] = .{</span>
<span class="line" id="L91"> .llvm_name = <span class="tok-str">"enhanced-sort"</span>,</span>
<span class="line" id="L92"> .description = <span class="tok-str">"Assume that the enhanced-sort facility is installed"</span>,</span>
<span class="line" id="L93"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L94"> };</span>
<span class="line" id="L95"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.execution_hint)] = .{</span>
<span class="line" id="L96"> .llvm_name = <span class="tok-str">"execution-hint"</span>,</span>
<span class="line" id="L97"> .description = <span class="tok-str">"Assume that the execution-hint facility is installed"</span>,</span>
<span class="line" id="L98"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L99"> };</span>
<span class="line" id="L100"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_serialization)] = .{</span>
<span class="line" id="L101"> .llvm_name = <span class="tok-str">"fast-serialization"</span>,</span>
<span class="line" id="L102"> .description = <span class="tok-str">"Assume that the fast-serialization facility is installed"</span>,</span>
<span class="line" id="L103"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L104"> };</span>
<span class="line" id="L105"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fp_extension)] = .{</span>
<span class="line" id="L106"> .llvm_name = <span class="tok-str">"fp-extension"</span>,</span>
<span class="line" id="L107"> .description = <span class="tok-str">"Assume that the floating-point extension facility is installed"</span>,</span>
<span class="line" id="L108"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L109"> };</span>
<span class="line" id="L110"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.guarded_storage)] = .{</span>
<span class="line" id="L111"> .llvm_name = <span class="tok-str">"guarded-storage"</span>,</span>
<span class="line" id="L112"> .description = <span class="tok-str">"Assume that the guarded-storage facility is installed"</span>,</span>
<span class="line" id="L113"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L114"> };</span>
<span class="line" id="L115"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.high_word)] = .{</span>
<span class="line" id="L116"> .llvm_name = <span class="tok-str">"high-word"</span>,</span>
<span class="line" id="L117"> .description = <span class="tok-str">"Assume that the high-word facility is installed"</span>,</span>
<span class="line" id="L118"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L119"> };</span>
<span class="line" id="L120"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.insert_reference_bits_multiple)] = .{</span>
<span class="line" id="L121"> .llvm_name = <span class="tok-str">"insert-reference-bits-multiple"</span>,</span>
<span class="line" id="L122"> .description = <span class="tok-str">"Assume that the insert-reference-bits-multiple facility is installed"</span>,</span>
<span class="line" id="L123"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L124"> };</span>
<span class="line" id="L125"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.interlocked_access1)] = .{</span>
<span class="line" id="L126"> .llvm_name = <span class="tok-str">"interlocked-access1"</span>,</span>
<span class="line" id="L127"> .description = <span class="tok-str">"Assume that interlocked-access facility 1 is installed"</span>,</span>
<span class="line" id="L128"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L129"> };</span>
<span class="line" id="L130"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.load_and_trap)] = .{</span>
<span class="line" id="L131"> .llvm_name = <span class="tok-str">"load-and-trap"</span>,</span>
<span class="line" id="L132"> .description = <span class="tok-str">"Assume that the load-and-trap facility is installed"</span>,</span>
<span class="line" id="L133"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L134"> };</span>
<span class="line" id="L135"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.load_and_zero_rightmost_byte)] = .{</span>
<span class="line" id="L136"> .llvm_name = <span class="tok-str">"load-and-zero-rightmost-byte"</span>,</span>
<span class="line" id="L137"> .description = <span class="tok-str">"Assume that the load-and-zero-rightmost-byte facility is installed"</span>,</span>
<span class="line" id="L138"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L139"> };</span>
<span class="line" id="L140"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.load_store_on_cond)] = .{</span>
<span class="line" id="L141"> .llvm_name = <span class="tok-str">"load-store-on-cond"</span>,</span>
<span class="line" id="L142"> .description = <span class="tok-str">"Assume that the load/store-on-condition facility is installed"</span>,</span>
<span class="line" id="L143"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L144"> };</span>
<span class="line" id="L145"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.load_store_on_cond_2)] = .{</span>
<span class="line" id="L146"> .llvm_name = <span class="tok-str">"load-store-on-cond-2"</span>,</span>
<span class="line" id="L147"> .description = <span class="tok-str">"Assume that the load/store-on-condition facility 2 is installed"</span>,</span>
<span class="line" id="L148"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L149"> };</span>
<span class="line" id="L150"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.message_security_assist_extension3)] = .{</span>
<span class="line" id="L151"> .llvm_name = <span class="tok-str">"message-security-assist-extension3"</span>,</span>
<span class="line" id="L152"> .description = <span class="tok-str">"Assume that the message-security-assist extension facility 3 is installed"</span>,</span>
<span class="line" id="L153"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L154"> };</span>
<span class="line" id="L155"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.message_security_assist_extension4)] = .{</span>
<span class="line" id="L156"> .llvm_name = <span class="tok-str">"message-security-assist-extension4"</span>,</span>
<span class="line" id="L157"> .description = <span class="tok-str">"Assume that the message-security-assist extension facility 4 is installed"</span>,</span>
<span class="line" id="L158"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L159"> };</span>
<span class="line" id="L160"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.message_security_assist_extension5)] = .{</span>
<span class="line" id="L161"> .llvm_name = <span class="tok-str">"message-security-assist-extension5"</span>,</span>
<span class="line" id="L162"> .description = <span class="tok-str">"Assume that the message-security-assist extension facility 5 is installed"</span>,</span>
<span class="line" id="L163"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L164"> };</span>
<span class="line" id="L165"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.message_security_assist_extension7)] = .{</span>
<span class="line" id="L166"> .llvm_name = <span class="tok-str">"message-security-assist-extension7"</span>,</span>
<span class="line" id="L167"> .description = <span class="tok-str">"Assume that the message-security-assist extension facility 7 is installed"</span>,</span>
<span class="line" id="L168"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L169"> };</span>
<span class="line" id="L170"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.message_security_assist_extension8)] = .{</span>
<span class="line" id="L171"> .llvm_name = <span class="tok-str">"message-security-assist-extension8"</span>,</span>
<span class="line" id="L172"> .description = <span class="tok-str">"Assume that the message-security-assist extension facility 8 is installed"</span>,</span>
<span class="line" id="L173"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L174"> };</span>
<span class="line" id="L175"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.message_security_assist_extension9)] = .{</span>
<span class="line" id="L176"> .llvm_name = <span class="tok-str">"message-security-assist-extension9"</span>,</span>
<span class="line" id="L177"> .description = <span class="tok-str">"Assume that the message-security-assist extension facility 9 is installed"</span>,</span>
<span class="line" id="L178"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L179"> };</span>
<span class="line" id="L180"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.miscellaneous_extensions)] = .{</span>
<span class="line" id="L181"> .llvm_name = <span class="tok-str">"miscellaneous-extensions"</span>,</span>
<span class="line" id="L182"> .description = <span class="tok-str">"Assume that the miscellaneous-extensions facility is installed"</span>,</span>
<span class="line" id="L183"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L184"> };</span>
<span class="line" id="L185"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.miscellaneous_extensions_2)] = .{</span>
<span class="line" id="L186"> .llvm_name = <span class="tok-str">"miscellaneous-extensions-2"</span>,</span>
<span class="line" id="L187"> .description = <span class="tok-str">"Assume that the miscellaneous-extensions facility 2 is installed"</span>,</span>
<span class="line" id="L188"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L189"> };</span>
<span class="line" id="L190"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.miscellaneous_extensions_3)] = .{</span>
<span class="line" id="L191"> .llvm_name = <span class="tok-str">"miscellaneous-extensions-3"</span>,</span>
<span class="line" id="L192"> .description = <span class="tok-str">"Assume that the miscellaneous-extensions facility 3 is installed"</span>,</span>
<span class="line" id="L193"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L194"> };</span>
<span class="line" id="L195"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.nnp_assist)] = .{</span>
<span class="line" id="L196"> .llvm_name = <span class="tok-str">"nnp-assist"</span>,</span>
<span class="line" id="L197"> .description = <span class="tok-str">"Assume that the NNP-assist facility is installed"</span>,</span>
<span class="line" id="L198"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L199"> };</span>
<span class="line" id="L200"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.population_count)] = .{</span>
<span class="line" id="L201"> .llvm_name = <span class="tok-str">"population-count"</span>,</span>
<span class="line" id="L202"> .description = <span class="tok-str">"Assume that the population-count facility is installed"</span>,</span>
<span class="line" id="L203"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L204"> };</span>
<span class="line" id="L205"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.processor_activity_instrumentation)] = .{</span>
<span class="line" id="L206"> .llvm_name = <span class="tok-str">"processor-activity-instrumentation"</span>,</span>
<span class="line" id="L207"> .description = <span class="tok-str">"Assume that the processor-activity-instrumentation facility is installed"</span>,</span>
<span class="line" id="L208"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L209"> };</span>
<span class="line" id="L210"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.processor_assist)] = .{</span>
<span class="line" id="L211"> .llvm_name = <span class="tok-str">"processor-assist"</span>,</span>
<span class="line" id="L212"> .description = <span class="tok-str">"Assume that the processor-assist facility is installed"</span>,</span>
<span class="line" id="L213"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L214"> };</span>
<span class="line" id="L215"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.reset_dat_protection)] = .{</span>
<span class="line" id="L216"> .llvm_name = <span class="tok-str">"reset-dat-protection"</span>,</span>
<span class="line" id="L217"> .description = <span class="tok-str">"Assume that the reset-DAT-protection facility is installed"</span>,</span>
<span class="line" id="L218"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L219"> };</span>
<span class="line" id="L220"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.reset_reference_bits_multiple)] = .{</span>
<span class="line" id="L221"> .llvm_name = <span class="tok-str">"reset-reference-bits-multiple"</span>,</span>
<span class="line" id="L222"> .description = <span class="tok-str">"Assume that the reset-reference-bits-multiple facility is installed"</span>,</span>
<span class="line" id="L223"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L224"> };</span>
<span class="line" id="L225"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.soft_float)] = .{</span>
<span class="line" id="L226"> .llvm_name = <span class="tok-str">"soft-float"</span>,</span>
<span class="line" id="L227"> .description = <span class="tok-str">"Use software emulation for floating point"</span>,</span>
<span class="line" id="L228"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L229"> };</span>
<span class="line" id="L230"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.transactional_execution)] = .{</span>
<span class="line" id="L231"> .llvm_name = <span class="tok-str">"transactional-execution"</span>,</span>
<span class="line" id="L232"> .description = <span class="tok-str">"Assume that the transactional-execution facility is installed"</span>,</span>
<span class="line" id="L233"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L234"> };</span>
<span class="line" id="L235"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vector)] = .{</span>
<span class="line" id="L236"> .llvm_name = <span class="tok-str">"vector"</span>,</span>
<span class="line" id="L237"> .description = <span class="tok-str">"Assume that the vectory facility is installed"</span>,</span>
<span class="line" id="L238"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L239"> };</span>
<span class="line" id="L240"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vector_enhancements_1)] = .{</span>
<span class="line" id="L241"> .llvm_name = <span class="tok-str">"vector-enhancements-1"</span>,</span>
<span class="line" id="L242"> .description = <span class="tok-str">"Assume that the vector enhancements facility 1 is installed"</span>,</span>
<span class="line" id="L243"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L244"> };</span>
<span class="line" id="L245"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vector_enhancements_2)] = .{</span>
<span class="line" id="L246"> .llvm_name = <span class="tok-str">"vector-enhancements-2"</span>,</span>
<span class="line" id="L247"> .description = <span class="tok-str">"Assume that the vector enhancements facility 2 is installed"</span>,</span>
<span class="line" id="L248"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L249"> };</span>
<span class="line" id="L250"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vector_packed_decimal)] = .{</span>
<span class="line" id="L251"> .llvm_name = <span class="tok-str">"vector-packed-decimal"</span>,</span>
<span class="line" id="L252"> .description = <span class="tok-str">"Assume that the vector packed decimal facility is installed"</span>,</span>
<span class="line" id="L253"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L254"> };</span>
<span class="line" id="L255"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vector_packed_decimal_enhancement)] = .{</span>
<span class="line" id="L256"> .llvm_name = <span class="tok-str">"vector-packed-decimal-enhancement"</span>,</span>
<span class="line" id="L257"> .description = <span class="tok-str">"Assume that the vector packed decimal enhancement facility is installed"</span>,</span>
<span class="line" id="L258"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L259"> };</span>
<span class="line" id="L260"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vector_packed_decimal_enhancement_2)] = .{</span>
<span class="line" id="L261"> .llvm_name = <span class="tok-str">"vector-packed-decimal-enhancement-2"</span>,</span>
<span class="line" id="L262"> .description = <span class="tok-str">"Assume that the vector packed decimal enhancement facility 2 is installed"</span>,</span>
<span class="line" id="L263"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L264"> };</span>
<span class="line" id="L265"> <span class="tok-kw">const</span> ti = <span class="tok-builtin">@typeInfo</span>(Feature);</span>
<span class="line" id="L266"> <span class="tok-kw">for</span> (&result, <span class="tok-number">0</span>..) |*elem, i| {</span>
<span class="line" id="L267"> elem.index = i;</span>
<span class="line" id="L268"> elem.name = ti.Enum.fields[i].name;</span>
<span class="line" id="L269"> }</span>
<span class="line" id="L270"> <span class="tok-kw">break</span> :blk result;</span>
<span class="line" id="L271">};</span>
<span class="line" id="L272"></span>
<span class="line" id="L273"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> cpu = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L274"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> arch10 = CpuModel{</span>
<span class="line" id="L275"> .name = <span class="tok-str">"arch10"</span>,</span>
<span class="line" id="L276"> .llvm_name = <span class="tok-str">"arch10"</span>,</span>
<span class="line" id="L277"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L278"> .dfp_zoned_conversion,</span>
<span class="line" id="L279"> .distinct_ops,</span>
<span class="line" id="L280"> .enhanced_dat_2,</span>
<span class="line" id="L281"> .execution_hint,</span>
<span class="line" id="L282"> .fast_serialization,</span>
<span class="line" id="L283"> .fp_extension,</span>
<span class="line" id="L284"> .high_word,</span>
<span class="line" id="L285"> .interlocked_access1,</span>
<span class="line" id="L286"> .load_and_trap,</span>
<span class="line" id="L287"> .load_store_on_cond,</span>
<span class="line" id="L288"> .message_security_assist_extension3,</span>
<span class="line" id="L289"> .message_security_assist_extension4,</span>
<span class="line" id="L290"> .miscellaneous_extensions,</span>
<span class="line" id="L291"> .population_count,</span>
<span class="line" id="L292"> .processor_assist,</span>
<span class="line" id="L293"> .reset_reference_bits_multiple,</span>
<span class="line" id="L294"> .transactional_execution,</span>
<span class="line" id="L295"> }),</span>
<span class="line" id="L296"> };</span>
<span class="line" id="L297"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> arch11 = CpuModel{</span>
<span class="line" id="L298"> .name = <span class="tok-str">"arch11"</span>,</span>
<span class="line" id="L299"> .llvm_name = <span class="tok-str">"arch11"</span>,</span>
<span class="line" id="L300"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L301"> .dfp_packed_conversion,</span>
<span class="line" id="L302"> .dfp_zoned_conversion,</span>
<span class="line" id="L303"> .distinct_ops,</span>
<span class="line" id="L304"> .enhanced_dat_2,</span>
<span class="line" id="L305"> .execution_hint,</span>
<span class="line" id="L306"> .fast_serialization,</span>
<span class="line" id="L307"> .fp_extension,</span>
<span class="line" id="L308"> .high_word,</span>
<span class="line" id="L309"> .interlocked_access1,</span>
<span class="line" id="L310"> .load_and_trap,</span>
<span class="line" id="L311"> .load_and_zero_rightmost_byte,</span>
<span class="line" id="L312"> .load_store_on_cond,</span>
<span class="line" id="L313"> .load_store_on_cond_2,</span>
<span class="line" id="L314"> .message_security_assist_extension3,</span>
<span class="line" id="L315"> .message_security_assist_extension4,</span>
<span class="line" id="L316"> .message_security_assist_extension5,</span>
<span class="line" id="L317"> .miscellaneous_extensions,</span>
<span class="line" id="L318"> .population_count,</span>
<span class="line" id="L319"> .processor_assist,</span>
<span class="line" id="L320"> .reset_reference_bits_multiple,</span>
<span class="line" id="L321"> .transactional_execution,</span>
<span class="line" id="L322"> .vector,</span>
<span class="line" id="L323"> }),</span>
<span class="line" id="L324"> };</span>
<span class="line" id="L325"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> arch12 = CpuModel{</span>
<span class="line" id="L326"> .name = <span class="tok-str">"arch12"</span>,</span>
<span class="line" id="L327"> .llvm_name = <span class="tok-str">"arch12"</span>,</span>
<span class="line" id="L328"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L329"> .dfp_packed_conversion,</span>
<span class="line" id="L330"> .dfp_zoned_conversion,</span>
<span class="line" id="L331"> .distinct_ops,</span>
<span class="line" id="L332"> .enhanced_dat_2,</span>
<span class="line" id="L333"> .execution_hint,</span>
<span class="line" id="L334"> .fast_serialization,</span>
<span class="line" id="L335"> .fp_extension,</span>
<span class="line" id="L336"> .guarded_storage,</span>
<span class="line" id="L337"> .high_word,</span>
<span class="line" id="L338"> .insert_reference_bits_multiple,</span>
<span class="line" id="L339"> .interlocked_access1,</span>
<span class="line" id="L340"> .load_and_trap,</span>
<span class="line" id="L341"> .load_and_zero_rightmost_byte,</span>
<span class="line" id="L342"> .load_store_on_cond,</span>
<span class="line" id="L343"> .load_store_on_cond_2,</span>
<span class="line" id="L344"> .message_security_assist_extension3,</span>
<span class="line" id="L345"> .message_security_assist_extension4,</span>
<span class="line" id="L346"> .message_security_assist_extension5,</span>
<span class="line" id="L347"> .message_security_assist_extension7,</span>
<span class="line" id="L348"> .message_security_assist_extension8,</span>
<span class="line" id="L349"> .miscellaneous_extensions,</span>
<span class="line" id="L350"> .miscellaneous_extensions_2,</span>
<span class="line" id="L351"> .population_count,</span>
<span class="line" id="L352"> .processor_assist,</span>
<span class="line" id="L353"> .reset_reference_bits_multiple,</span>
<span class="line" id="L354"> .transactional_execution,</span>
<span class="line" id="L355"> .vector,</span>
<span class="line" id="L356"> .vector_enhancements_1,</span>
<span class="line" id="L357"> .vector_packed_decimal,</span>
<span class="line" id="L358"> }),</span>
<span class="line" id="L359"> };</span>
<span class="line" id="L360"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> arch13 = CpuModel{</span>
<span class="line" id="L361"> .name = <span class="tok-str">"arch13"</span>,</span>
<span class="line" id="L362"> .llvm_name = <span class="tok-str">"arch13"</span>,</span>
<span class="line" id="L363"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L364"> .deflate_conversion,</span>
<span class="line" id="L365"> .dfp_packed_conversion,</span>
<span class="line" id="L366"> .dfp_zoned_conversion,</span>
<span class="line" id="L367"> .distinct_ops,</span>
<span class="line" id="L368"> .enhanced_dat_2,</span>
<span class="line" id="L369"> .enhanced_sort,</span>
<span class="line" id="L370"> .execution_hint,</span>
<span class="line" id="L371"> .fast_serialization,</span>
<span class="line" id="L372"> .fp_extension,</span>
<span class="line" id="L373"> .guarded_storage,</span>
<span class="line" id="L374"> .high_word,</span>
<span class="line" id="L375"> .insert_reference_bits_multiple,</span>
<span class="line" id="L376"> .interlocked_access1,</span>
<span class="line" id="L377"> .load_and_trap,</span>
<span class="line" id="L378"> .load_and_zero_rightmost_byte,</span>
<span class="line" id="L379"> .load_store_on_cond,</span>
<span class="line" id="L380"> .load_store_on_cond_2,</span>
<span class="line" id="L381"> .message_security_assist_extension3,</span>
<span class="line" id="L382"> .message_security_assist_extension4,</span>
<span class="line" id="L383"> .message_security_assist_extension5,</span>
<span class="line" id="L384"> .message_security_assist_extension7,</span>
<span class="line" id="L385"> .message_security_assist_extension8,</span>
<span class="line" id="L386"> .message_security_assist_extension9,</span>
<span class="line" id="L387"> .miscellaneous_extensions,</span>
<span class="line" id="L388"> .miscellaneous_extensions_2,</span>
<span class="line" id="L389"> .miscellaneous_extensions_3,</span>
<span class="line" id="L390"> .population_count,</span>
<span class="line" id="L391"> .processor_assist,</span>
<span class="line" id="L392"> .reset_reference_bits_multiple,</span>
<span class="line" id="L393"> .transactional_execution,</span>
<span class="line" id="L394"> .vector,</span>
<span class="line" id="L395"> .vector_enhancements_1,</span>
<span class="line" id="L396"> .vector_enhancements_2,</span>
<span class="line" id="L397"> .vector_packed_decimal,</span>
<span class="line" id="L398"> .vector_packed_decimal_enhancement,</span>
<span class="line" id="L399"> }),</span>
<span class="line" id="L400"> };</span>
<span class="line" id="L401"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> arch14 = CpuModel{</span>
<span class="line" id="L402"> .name = <span class="tok-str">"arch14"</span>,</span>
<span class="line" id="L403"> .llvm_name = <span class="tok-str">"arch14"</span>,</span>
<span class="line" id="L404"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L405"> .bear_enhancement,</span>
<span class="line" id="L406"> .deflate_conversion,</span>
<span class="line" id="L407"> .dfp_packed_conversion,</span>
<span class="line" id="L408"> .dfp_zoned_conversion,</span>
<span class="line" id="L409"> .distinct_ops,</span>
<span class="line" id="L410"> .enhanced_dat_2,</span>
<span class="line" id="L411"> .enhanced_sort,</span>
<span class="line" id="L412"> .execution_hint,</span>
<span class="line" id="L413"> .fast_serialization,</span>
<span class="line" id="L414"> .fp_extension,</span>
<span class="line" id="L415"> .guarded_storage,</span>
<span class="line" id="L416"> .high_word,</span>
<span class="line" id="L417"> .insert_reference_bits_multiple,</span>
<span class="line" id="L418"> .interlocked_access1,</span>
<span class="line" id="L419"> .load_and_trap,</span>
<span class="line" id="L420"> .load_and_zero_rightmost_byte,</span>
<span class="line" id="L421"> .load_store_on_cond,</span>
<span class="line" id="L422"> .load_store_on_cond_2,</span>
<span class="line" id="L423"> .message_security_assist_extension3,</span>
<span class="line" id="L424"> .message_security_assist_extension4,</span>
<span class="line" id="L425"> .message_security_assist_extension5,</span>
<span class="line" id="L426"> .message_security_assist_extension7,</span>
<span class="line" id="L427"> .message_security_assist_extension8,</span>
<span class="line" id="L428"> .message_security_assist_extension9,</span>
<span class="line" id="L429"> .miscellaneous_extensions,</span>
<span class="line" id="L430"> .miscellaneous_extensions_2,</span>
<span class="line" id="L431"> .miscellaneous_extensions_3,</span>
<span class="line" id="L432"> .nnp_assist,</span>
<span class="line" id="L433"> .population_count,</span>
<span class="line" id="L434"> .processor_activity_instrumentation,</span>
<span class="line" id="L435"> .processor_assist,</span>
<span class="line" id="L436"> .reset_dat_protection,</span>
<span class="line" id="L437"> .reset_reference_bits_multiple,</span>
<span class="line" id="L438"> .transactional_execution,</span>
<span class="line" id="L439"> .vector,</span>
<span class="line" id="L440"> .vector_enhancements_1,</span>
<span class="line" id="L441"> .vector_enhancements_2,</span>
<span class="line" id="L442"> .vector_packed_decimal,</span>
<span class="line" id="L443"> .vector_packed_decimal_enhancement,</span>
<span class="line" id="L444"> .vector_packed_decimal_enhancement_2,</span>
<span class="line" id="L445"> }),</span>
<span class="line" id="L446"> };</span>
<span class="line" id="L447"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> arch8 = CpuModel{</span>
<span class="line" id="L448"> .name = <span class="tok-str">"arch8"</span>,</span>
<span class="line" id="L449"> .llvm_name = <span class="tok-str">"arch8"</span>,</span>
<span class="line" id="L450"> .features = featureSet(&[_]Feature{}),</span>
<span class="line" id="L451"> };</span>
<span class="line" id="L452"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> arch9 = CpuModel{</span>
<span class="line" id="L453"> .name = <span class="tok-str">"arch9"</span>,</span>
<span class="line" id="L454"> .llvm_name = <span class="tok-str">"arch9"</span>,</span>
<span class="line" id="L455"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L456"> .distinct_ops,</span>
<span class="line" id="L457"> .fast_serialization,</span>
<span class="line" id="L458"> .fp_extension,</span>
<span class="line" id="L459"> .high_word,</span>
<span class="line" id="L460"> .interlocked_access1,</span>
<span class="line" id="L461"> .load_store_on_cond,</span>
<span class="line" id="L462"> .message_security_assist_extension3,</span>
<span class="line" id="L463"> .message_security_assist_extension4,</span>
<span class="line" id="L464"> .population_count,</span>
<span class="line" id="L465"> .reset_reference_bits_multiple,</span>
<span class="line" id="L466"> }),</span>
<span class="line" id="L467"> };</span>
<span class="line" id="L468"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> generic = CpuModel{</span>
<span class="line" id="L469"> .name = <span class="tok-str">"generic"</span>,</span>
<span class="line" id="L470"> .llvm_name = <span class="tok-str">"generic"</span>,</span>
<span class="line" id="L471"> .features = featureSet(&[_]Feature{}),</span>
<span class="line" id="L472"> };</span>
<span class="line" id="L473"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> z10 = CpuModel{</span>
<span class="line" id="L474"> .name = <span class="tok-str">"z10"</span>,</span>
<span class="line" id="L475"> .llvm_name = <span class="tok-str">"z10"</span>,</span>
<span class="line" id="L476"> .features = featureSet(&[_]Feature{}),</span>
<span class="line" id="L477"> };</span>
<span class="line" id="L478"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> z13 = CpuModel{</span>
<span class="line" id="L479"> .name = <span class="tok-str">"z13"</span>,</span>
<span class="line" id="L480"> .llvm_name = <span class="tok-str">"z13"</span>,</span>
<span class="line" id="L481"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L482"> .dfp_packed_conversion,</span>
<span class="line" id="L483"> .dfp_zoned_conversion,</span>
<span class="line" id="L484"> .distinct_ops,</span>
<span class="line" id="L485"> .enhanced_dat_2,</span>
<span class="line" id="L486"> .execution_hint,</span>
<span class="line" id="L487"> .fast_serialization,</span>
<span class="line" id="L488"> .fp_extension,</span>
<span class="line" id="L489"> .high_word,</span>
<span class="line" id="L490"> .interlocked_access1,</span>
<span class="line" id="L491"> .load_and_trap,</span>
<span class="line" id="L492"> .load_and_zero_rightmost_byte,</span>
<span class="line" id="L493"> .load_store_on_cond,</span>
<span class="line" id="L494"> .load_store_on_cond_2,</span>
<span class="line" id="L495"> .message_security_assist_extension3,</span>
<span class="line" id="L496"> .message_security_assist_extension4,</span>
<span class="line" id="L497"> .message_security_assist_extension5,</span>
<span class="line" id="L498"> .miscellaneous_extensions,</span>
<span class="line" id="L499"> .population_count,</span>
<span class="line" id="L500"> .processor_assist,</span>
<span class="line" id="L501"> .reset_reference_bits_multiple,</span>
<span class="line" id="L502"> .transactional_execution,</span>
<span class="line" id="L503"> .vector,</span>
<span class="line" id="L504"> }),</span>
<span class="line" id="L505"> };</span>
<span class="line" id="L506"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> z14 = CpuModel{</span>
<span class="line" id="L507"> .name = <span class="tok-str">"z14"</span>,</span>
<span class="line" id="L508"> .llvm_name = <span class="tok-str">"z14"</span>,</span>
<span class="line" id="L509"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L510"> .dfp_packed_conversion,</span>
<span class="line" id="L511"> .dfp_zoned_conversion,</span>
<span class="line" id="L512"> .distinct_ops,</span>
<span class="line" id="L513"> .enhanced_dat_2,</span>
<span class="line" id="L514"> .execution_hint,</span>
<span class="line" id="L515"> .fast_serialization,</span>
<span class="line" id="L516"> .fp_extension,</span>
<span class="line" id="L517"> .guarded_storage,</span>
<span class="line" id="L518"> .high_word,</span>
<span class="line" id="L519"> .insert_reference_bits_multiple,</span>
<span class="line" id="L520"> .interlocked_access1,</span>
<span class="line" id="L521"> .load_and_trap,</span>
<span class="line" id="L522"> .load_and_zero_rightmost_byte,</span>
<span class="line" id="L523"> .load_store_on_cond,</span>
<span class="line" id="L524"> .load_store_on_cond_2,</span>
<span class="line" id="L525"> .message_security_assist_extension3,</span>
<span class="line" id="L526"> .message_security_assist_extension4,</span>
<span class="line" id="L527"> .message_security_assist_extension5,</span>
<span class="line" id="L528"> .message_security_assist_extension7,</span>
<span class="line" id="L529"> .message_security_assist_extension8,</span>
<span class="line" id="L530"> .miscellaneous_extensions,</span>
<span class="line" id="L531"> .miscellaneous_extensions_2,</span>
<span class="line" id="L532"> .population_count,</span>
<span class="line" id="L533"> .processor_assist,</span>
<span class="line" id="L534"> .reset_reference_bits_multiple,</span>
<span class="line" id="L535"> .transactional_execution,</span>
<span class="line" id="L536"> .vector,</span>
<span class="line" id="L537"> .vector_enhancements_1,</span>
<span class="line" id="L538"> .vector_packed_decimal,</span>
<span class="line" id="L539"> }),</span>
<span class="line" id="L540"> };</span>
<span class="line" id="L541"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> z15 = CpuModel{</span>
<span class="line" id="L542"> .name = <span class="tok-str">"z15"</span>,</span>
<span class="line" id="L543"> .llvm_name = <span class="tok-str">"z15"</span>,</span>
<span class="line" id="L544"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L545"> .deflate_conversion,</span>
<span class="line" id="L546"> .dfp_packed_conversion,</span>
<span class="line" id="L547"> .dfp_zoned_conversion,</span>
<span class="line" id="L548"> .distinct_ops,</span>
<span class="line" id="L549"> .enhanced_dat_2,</span>
<span class="line" id="L550"> .enhanced_sort,</span>
<span class="line" id="L551"> .execution_hint,</span>
<span class="line" id="L552"> .fast_serialization,</span>
<span class="line" id="L553"> .fp_extension,</span>
<span class="line" id="L554"> .guarded_storage,</span>
<span class="line" id="L555"> .high_word,</span>
<span class="line" id="L556"> .insert_reference_bits_multiple,</span>
<span class="line" id="L557"> .interlocked_access1,</span>
<span class="line" id="L558"> .load_and_trap,</span>
<span class="line" id="L559"> .load_and_zero_rightmost_byte,</span>
<span class="line" id="L560"> .load_store_on_cond,</span>
<span class="line" id="L561"> .load_store_on_cond_2,</span>
<span class="line" id="L562"> .message_security_assist_extension3,</span>
<span class="line" id="L563"> .message_security_assist_extension4,</span>
<span class="line" id="L564"> .message_security_assist_extension5,</span>
<span class="line" id="L565"> .message_security_assist_extension7,</span>
<span class="line" id="L566"> .message_security_assist_extension8,</span>
<span class="line" id="L567"> .message_security_assist_extension9,</span>
<span class="line" id="L568"> .miscellaneous_extensions,</span>
<span class="line" id="L569"> .miscellaneous_extensions_2,</span>
<span class="line" id="L570"> .miscellaneous_extensions_3,</span>
<span class="line" id="L571"> .population_count,</span>
<span class="line" id="L572"> .processor_assist,</span>
<span class="line" id="L573"> .reset_reference_bits_multiple,</span>
<span class="line" id="L574"> .transactional_execution,</span>
<span class="line" id="L575"> .vector,</span>
<span class="line" id="L576"> .vector_enhancements_1,</span>
<span class="line" id="L577"> .vector_enhancements_2,</span>
<span class="line" id="L578"> .vector_packed_decimal,</span>
<span class="line" id="L579"> .vector_packed_decimal_enhancement,</span>
<span class="line" id="L580"> }),</span>
<span class="line" id="L581"> };</span>
<span class="line" id="L582"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> z16 = CpuModel{</span>
<span class="line" id="L583"> .name = <span class="tok-str">"z16"</span>,</span>
<span class="line" id="L584"> .llvm_name = <span class="tok-str">"z16"</span>,</span>
<span class="line" id="L585"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L586"> .bear_enhancement,</span>
<span class="line" id="L587"> .deflate_conversion,</span>
<span class="line" id="L588"> .dfp_packed_conversion,</span>
<span class="line" id="L589"> .dfp_zoned_conversion,</span>
<span class="line" id="L590"> .distinct_ops,</span>
<span class="line" id="L591"> .enhanced_dat_2,</span>
<span class="line" id="L592"> .enhanced_sort,</span>
<span class="line" id="L593"> .execution_hint,</span>
<span class="line" id="L594"> .fast_serialization,</span>
<span class="line" id="L595"> .fp_extension,</span>
<span class="line" id="L596"> .guarded_storage,</span>
<span class="line" id="L597"> .high_word,</span>
<span class="line" id="L598"> .insert_reference_bits_multiple,</span>
<span class="line" id="L599"> .interlocked_access1,</span>
<span class="line" id="L600"> .load_and_trap,</span>
<span class="line" id="L601"> .load_and_zero_rightmost_byte,</span>
<span class="line" id="L602"> .load_store_on_cond,</span>
<span class="line" id="L603"> .load_store_on_cond_2,</span>
<span class="line" id="L604"> .message_security_assist_extension3,</span>
<span class="line" id="L605"> .message_security_assist_extension4,</span>
<span class="line" id="L606"> .message_security_assist_extension5,</span>
<span class="line" id="L607"> .message_security_assist_extension7,</span>
<span class="line" id="L608"> .message_security_assist_extension8,</span>
<span class="line" id="L609"> .message_security_assist_extension9,</span>
<span class="line" id="L610"> .miscellaneous_extensions,</span>
<span class="line" id="L611"> .miscellaneous_extensions_2,</span>
<span class="line" id="L612"> .miscellaneous_extensions_3,</span>
<span class="line" id="L613"> .nnp_assist,</span>
<span class="line" id="L614"> .population_count,</span>
<span class="line" id="L615"> .processor_activity_instrumentation,</span>
<span class="line" id="L616"> .processor_assist,</span>
<span class="line" id="L617"> .reset_dat_protection,</span>
<span class="line" id="L618"> .reset_reference_bits_multiple,</span>
<span class="line" id="L619"> .transactional_execution,</span>
<span class="line" id="L620"> .vector,</span>
<span class="line" id="L621"> .vector_enhancements_1,</span>
<span class="line" id="L622"> .vector_enhancements_2,</span>
<span class="line" id="L623"> .vector_packed_decimal,</span>
<span class="line" id="L624"> .vector_packed_decimal_enhancement,</span>
<span class="line" id="L625"> .vector_packed_decimal_enhancement_2,</span>
<span class="line" id="L626"> }),</span>
<span class="line" id="L627"> };</span>
<span class="line" id="L628"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> z196 = CpuModel{</span>
<span class="line" id="L629"> .name = <span class="tok-str">"z196"</span>,</span>
<span class="line" id="L630"> .llvm_name = <span class="tok-str">"z196"</span>,</span>
<span class="line" id="L631"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L632"> .distinct_ops,</span>
<span class="line" id="L633"> .fast_serialization,</span>
<span class="line" id="L634"> .fp_extension,</span>
<span class="line" id="L635"> .high_word,</span>
<span class="line" id="L636"> .interlocked_access1,</span>
<span class="line" id="L637"> .load_store_on_cond,</span>
<span class="line" id="L638"> .message_security_assist_extension3,</span>
<span class="line" id="L639"> .message_security_assist_extension4,</span>
<span class="line" id="L640"> .population_count,</span>
<span class="line" id="L641"> .reset_reference_bits_multiple,</span>
<span class="line" id="L642"> }),</span>
<span class="line" id="L643"> };</span>
<span class="line" id="L644"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> zEC12 = CpuModel{</span>
<span class="line" id="L645"> .name = <span class="tok-str">"zEC12"</span>,</span>
<span class="line" id="L646"> .llvm_name = <span class="tok-str">"zEC12"</span>,</span>
<span class="line" id="L647"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L648"> .dfp_zoned_conversion,</span>
<span class="line" id="L649"> .distinct_ops,</span>
<span class="line" id="L650"> .enhanced_dat_2,</span>
<span class="line" id="L651"> .execution_hint,</span>
<span class="line" id="L652"> .fast_serialization,</span>
<span class="line" id="L653"> .fp_extension,</span>
<span class="line" id="L654"> .high_word,</span>
<span class="line" id="L655"> .interlocked_access1,</span>
<span class="line" id="L656"> .load_and_trap,</span>
<span class="line" id="L657"> .load_store_on_cond,</span>
<span class="line" id="L658"> .message_security_assist_extension3,</span>
<span class="line" id="L659"> .message_security_assist_extension4,</span>
<span class="line" id="L660"> .miscellaneous_extensions,</span>
<span class="line" id="L661"> .population_count,</span>
<span class="line" id="L662"> .processor_assist,</span>
<span class="line" id="L663"> .reset_reference_bits_multiple,</span>
<span class="line" id="L664"> .transactional_execution,</span>
<span class="line" id="L665"> }),</span>
<span class="line" id="L666"> };</span>
<span class="line" id="L667">};</span>
<span class="line" id="L668"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! This file is auto-generated by tools/update_cpu_features.zig.</span></span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L4"><span class="tok-kw">const</span> CpuFeature = std.Target.Cpu.Feature;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> CpuModel = std.Target.Cpu.Model;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Feature = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L8"> @"16bit_mode",</span>
<span class="line" id="L9"> @"32bit_mode",</span>
<span class="line" id="L10"> @"3dnow",</span>
<span class="line" id="L11"> @"3dnowa",</span>
<span class="line" id="L12"> @"64bit",</span>
<span class="line" id="L13"> adx,</span>
<span class="line" id="L14"> aes,</span>
<span class="line" id="L15"> allow_light_256_bit,</span>
<span class="line" id="L16"> amx_bf16,</span>
<span class="line" id="L17"> amx_fp16,</span>
<span class="line" id="L18"> amx_int8,</span>
<span class="line" id="L19"> amx_tile,</span>
<span class="line" id="L20"> avx,</span>
<span class="line" id="L21"> avx2,</span>
<span class="line" id="L22"> avx512bf16,</span>
<span class="line" id="L23"> avx512bitalg,</span>
<span class="line" id="L24"> avx512bw,</span>
<span class="line" id="L25"> avx512cd,</span>
<span class="line" id="L26"> avx512dq,</span>
<span class="line" id="L27"> avx512er,</span>
<span class="line" id="L28"> avx512f,</span>
<span class="line" id="L29"> avx512fp16,</span>
<span class="line" id="L30"> avx512ifma,</span>
<span class="line" id="L31"> avx512pf,</span>
<span class="line" id="L32"> avx512vbmi,</span>
<span class="line" id="L33"> avx512vbmi2,</span>
<span class="line" id="L34"> avx512vl,</span>
<span class="line" id="L35"> avx512vnni,</span>
<span class="line" id="L36"> avx512vp2intersect,</span>
<span class="line" id="L37"> avx512vpopcntdq,</span>
<span class="line" id="L38"> avxifma,</span>
<span class="line" id="L39"> avxneconvert,</span>
<span class="line" id="L40"> avxvnni,</span>
<span class="line" id="L41"> avxvnniint8,</span>
<span class="line" id="L42"> bmi,</span>
<span class="line" id="L43"> bmi2,</span>
<span class="line" id="L44"> branchfusion,</span>
<span class="line" id="L45"> cldemote,</span>
<span class="line" id="L46"> clflushopt,</span>
<span class="line" id="L47"> clwb,</span>
<span class="line" id="L48"> clzero,</span>
<span class="line" id="L49"> cmov,</span>
<span class="line" id="L50"> cmpccxadd,</span>
<span class="line" id="L51"> crc32,</span>
<span class="line" id="L52"> cx16,</span>
<span class="line" id="L53"> cx8,</span>
<span class="line" id="L54"> enqcmd,</span>
<span class="line" id="L55"> ermsb,</span>
<span class="line" id="L56"> f16c,</span>
<span class="line" id="L57"> false_deps_getmant,</span>
<span class="line" id="L58"> false_deps_lzcnt_tzcnt,</span>
<span class="line" id="L59"> false_deps_mulc,</span>
<span class="line" id="L60"> false_deps_mullq,</span>
<span class="line" id="L61"> false_deps_perm,</span>
<span class="line" id="L62"> false_deps_popcnt,</span>
<span class="line" id="L63"> false_deps_range,</span>
<span class="line" id="L64"> fast_11bytenop,</span>
<span class="line" id="L65"> fast_15bytenop,</span>
<span class="line" id="L66"> fast_7bytenop,</span>
<span class="line" id="L67"> fast_bextr,</span>
<span class="line" id="L68"> fast_gather,</span>
<span class="line" id="L69"> fast_hops,</span>
<span class="line" id="L70"> fast_lzcnt,</span>
<span class="line" id="L71"> fast_movbe,</span>
<span class="line" id="L72"> fast_scalar_fsqrt,</span>
<span class="line" id="L73"> fast_scalar_shift_masks,</span>
<span class="line" id="L74"> fast_shld_rotate,</span>
<span class="line" id="L75"> fast_variable_crosslane_shuffle,</span>
<span class="line" id="L76"> fast_variable_perlane_shuffle,</span>
<span class="line" id="L77"> fast_vector_fsqrt,</span>
<span class="line" id="L78"> fast_vector_shift_masks,</span>
<span class="line" id="L79"> fma,</span>
<span class="line" id="L80"> fma4,</span>
<span class="line" id="L81"> fsgsbase,</span>
<span class="line" id="L82"> fsrm,</span>
<span class="line" id="L83"> fxsr,</span>
<span class="line" id="L84"> gfni,</span>
<span class="line" id="L85"> harden_sls_ijmp,</span>
<span class="line" id="L86"> harden_sls_ret,</span>
<span class="line" id="L87"> hreset,</span>
<span class="line" id="L88"> idivl_to_divb,</span>
<span class="line" id="L89"> idivq_to_divl,</span>
<span class="line" id="L90"> invpcid,</span>
<span class="line" id="L91"> kl,</span>
<span class="line" id="L92"> lea_sp,</span>
<span class="line" id="L93"> lea_uses_ag,</span>
<span class="line" id="L94"> lvi_cfi,</span>
<span class="line" id="L95"> lvi_load_hardening,</span>
<span class="line" id="L96"> lwp,</span>
<span class="line" id="L97"> lzcnt,</span>
<span class="line" id="L98"> macrofusion,</span>
<span class="line" id="L99"> mmx,</span>
<span class="line" id="L100"> movbe,</span>
<span class="line" id="L101"> movdir64b,</span>
<span class="line" id="L102"> movdiri,</span>
<span class="line" id="L103"> mwaitx,</span>
<span class="line" id="L104"> nopl,</span>
<span class="line" id="L105"> pad_short_functions,</span>
<span class="line" id="L106"> pclmul,</span>
<span class="line" id="L107"> pconfig,</span>
<span class="line" id="L108"> pku,</span>
<span class="line" id="L109"> popcnt,</span>
<span class="line" id="L110"> prefer_128_bit,</span>
<span class="line" id="L111"> prefer_256_bit,</span>
<span class="line" id="L112"> prefer_mask_registers,</span>
<span class="line" id="L113"> prefetchi,</span>
<span class="line" id="L114"> prefetchwt1,</span>
<span class="line" id="L115"> prfchw,</span>
<span class="line" id="L116"> ptwrite,</span>
<span class="line" id="L117"> raoint,</span>
<span class="line" id="L118"> rdpid,</span>
<span class="line" id="L119"> rdpru,</span>
<span class="line" id="L120"> rdrnd,</span>
<span class="line" id="L121"> rdseed,</span>
<span class="line" id="L122"> retpoline,</span>
<span class="line" id="L123"> retpoline_external_thunk,</span>
<span class="line" id="L124"> retpoline_indirect_branches,</span>
<span class="line" id="L125"> retpoline_indirect_calls,</span>
<span class="line" id="L126"> rtm,</span>
<span class="line" id="L127"> sahf,</span>
<span class="line" id="L128"> sbb_dep_breaking,</span>
<span class="line" id="L129"> serialize,</span>
<span class="line" id="L130"> seses,</span>
<span class="line" id="L131"> sgx,</span>
<span class="line" id="L132"> sha,</span>
<span class="line" id="L133"> shstk,</span>
<span class="line" id="L134"> slow_3ops_lea,</span>
<span class="line" id="L135"> slow_incdec,</span>
<span class="line" id="L136"> slow_lea,</span>
<span class="line" id="L137"> slow_pmaddwd,</span>
<span class="line" id="L138"> slow_pmulld,</span>
<span class="line" id="L139"> slow_shld,</span>
<span class="line" id="L140"> slow_two_mem_ops,</span>
<span class="line" id="L141"> slow_unaligned_mem_16,</span>
<span class="line" id="L142"> slow_unaligned_mem_32,</span>
<span class="line" id="L143"> soft_float,</span>
<span class="line" id="L144"> sse,</span>
<span class="line" id="L145"> sse2,</span>
<span class="line" id="L146"> sse3,</span>
<span class="line" id="L147"> sse4_1,</span>
<span class="line" id="L148"> sse4_2,</span>
<span class="line" id="L149"> sse4a,</span>
<span class="line" id="L150"> sse_unaligned_mem,</span>
<span class="line" id="L151"> ssse3,</span>
<span class="line" id="L152"> tagged_globals,</span>
<span class="line" id="L153"> tbm,</span>
<span class="line" id="L154"> tsxldtrk,</span>
<span class="line" id="L155"> uintr,</span>
<span class="line" id="L156"> use_glm_div_sqrt_costs,</span>
<span class="line" id="L157"> use_slm_arith_costs,</span>
<span class="line" id="L158"> vaes,</span>
<span class="line" id="L159"> vpclmulqdq,</span>
<span class="line" id="L160"> vzeroupper,</span>
<span class="line" id="L161"> waitpkg,</span>
<span class="line" id="L162"> wbnoinvd,</span>
<span class="line" id="L163"> widekl,</span>
<span class="line" id="L164"> x87,</span>
<span class="line" id="L165"> xop,</span>
<span class="line" id="L166"> xsave,</span>
<span class="line" id="L167"> xsavec,</span>
<span class="line" id="L168"> xsaveopt,</span>
<span class="line" id="L169"> xsaves,</span>
<span class="line" id="L170">};</span>
<span class="line" id="L171"></span>
<span class="line" id="L172"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> featureSet = CpuFeature.feature_set_fns(Feature).featureSet;</span>
<span class="line" id="L173"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> featureSetHas = CpuFeature.feature_set_fns(Feature).featureSetHas;</span>
<span class="line" id="L174"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> featureSetHasAny = CpuFeature.feature_set_fns(Feature).featureSetHasAny;</span>
<span class="line" id="L175"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> featureSetHasAll = CpuFeature.feature_set_fns(Feature).featureSetHasAll;</span>
<span class="line" id="L176"></span>
<span class="line" id="L177"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> all_features = blk: {</span>
<span class="line" id="L178"> <span class="tok-kw">const</span> len = <span class="tok-builtin">@typeInfo</span>(Feature).Enum.fields.len;</span>
<span class="line" id="L179"> std.debug.assert(len <= CpuFeature.Set.needed_bit_count);</span>
<span class="line" id="L180"> <span class="tok-kw">var</span> result: [len]CpuFeature = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L181"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.@"16bit_mode")] = .{</span>
<span class="line" id="L182"> .llvm_name = <span class="tok-str">"16bit-mode"</span>,</span>
<span class="line" id="L183"> .description = <span class="tok-str">"16-bit mode (i8086)"</span>,</span>
<span class="line" id="L184"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L185"> };</span>
<span class="line" id="L186"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.@"32bit_mode")] = .{</span>
<span class="line" id="L187"> .llvm_name = <span class="tok-str">"32bit-mode"</span>,</span>
<span class="line" id="L188"> .description = <span class="tok-str">"32-bit mode (80386)"</span>,</span>
<span class="line" id="L189"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L190"> };</span>
<span class="line" id="L191"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.@"3dnow")] = .{</span>
<span class="line" id="L192"> .llvm_name = <span class="tok-str">"3dnow"</span>,</span>
<span class="line" id="L193"> .description = <span class="tok-str">"Enable 3DNow! instructions"</span>,</span>
<span class="line" id="L194"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L195"> .mmx,</span>
<span class="line" id="L196"> }),</span>
<span class="line" id="L197"> };</span>
<span class="line" id="L198"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.@"3dnowa")] = .{</span>
<span class="line" id="L199"> .llvm_name = <span class="tok-str">"3dnowa"</span>,</span>
<span class="line" id="L200"> .description = <span class="tok-str">"Enable 3DNow! Athlon instructions"</span>,</span>
<span class="line" id="L201"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L202"> .@"3dnow",</span>
<span class="line" id="L203"> }),</span>
<span class="line" id="L204"> };</span>
<span class="line" id="L205"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.@"64bit")] = .{</span>
<span class="line" id="L206"> .llvm_name = <span class="tok-str">"64bit"</span>,</span>
<span class="line" id="L207"> .description = <span class="tok-str">"Support 64-bit instructions"</span>,</span>
<span class="line" id="L208"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L209"> };</span>
<span class="line" id="L210"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.adx)] = .{</span>
<span class="line" id="L211"> .llvm_name = <span class="tok-str">"adx"</span>,</span>
<span class="line" id="L212"> .description = <span class="tok-str">"Support ADX instructions"</span>,</span>
<span class="line" id="L213"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L214"> };</span>
<span class="line" id="L215"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.aes)] = .{</span>
<span class="line" id="L216"> .llvm_name = <span class="tok-str">"aes"</span>,</span>
<span class="line" id="L217"> .description = <span class="tok-str">"Enable AES instructions"</span>,</span>
<span class="line" id="L218"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L219"> .sse2,</span>
<span class="line" id="L220"> }),</span>
<span class="line" id="L221"> };</span>
<span class="line" id="L222"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.allow_light_256_bit)] = .{</span>
<span class="line" id="L223"> .llvm_name = <span class="tok-str">"allow-light-256-bit"</span>,</span>
<span class="line" id="L224"> .description = <span class="tok-str">"Enable generation of 256-bit load/stores even if we prefer 128-bit"</span>,</span>
<span class="line" id="L225"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L226"> };</span>
<span class="line" id="L227"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.amx_bf16)] = .{</span>
<span class="line" id="L228"> .llvm_name = <span class="tok-str">"amx-bf16"</span>,</span>
<span class="line" id="L229"> .description = <span class="tok-str">"Support AMX-BF16 instructions"</span>,</span>
<span class="line" id="L230"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L231"> .amx_tile,</span>
<span class="line" id="L232"> }),</span>
<span class="line" id="L233"> };</span>
<span class="line" id="L234"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.amx_fp16)] = .{</span>
<span class="line" id="L235"> .llvm_name = <span class="tok-str">"amx-fp16"</span>,</span>
<span class="line" id="L236"> .description = <span class="tok-str">"Support AMX amx-fp16 instructions"</span>,</span>
<span class="line" id="L237"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L238"> .amx_tile,</span>
<span class="line" id="L239"> }),</span>
<span class="line" id="L240"> };</span>
<span class="line" id="L241"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.amx_int8)] = .{</span>
<span class="line" id="L242"> .llvm_name = <span class="tok-str">"amx-int8"</span>,</span>
<span class="line" id="L243"> .description = <span class="tok-str">"Support AMX-INT8 instructions"</span>,</span>
<span class="line" id="L244"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L245"> .amx_tile,</span>
<span class="line" id="L246"> }),</span>
<span class="line" id="L247"> };</span>
<span class="line" id="L248"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.amx_tile)] = .{</span>
<span class="line" id="L249"> .llvm_name = <span class="tok-str">"amx-tile"</span>,</span>
<span class="line" id="L250"> .description = <span class="tok-str">"Support AMX-TILE instructions"</span>,</span>
<span class="line" id="L251"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L252"> };</span>
<span class="line" id="L253"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx)] = .{</span>
<span class="line" id="L254"> .llvm_name = <span class="tok-str">"avx"</span>,</span>
<span class="line" id="L255"> .description = <span class="tok-str">"Enable AVX instructions"</span>,</span>
<span class="line" id="L256"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L257"> .sse4_2,</span>
<span class="line" id="L258"> }),</span>
<span class="line" id="L259"> };</span>
<span class="line" id="L260"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx2)] = .{</span>
<span class="line" id="L261"> .llvm_name = <span class="tok-str">"avx2"</span>,</span>
<span class="line" id="L262"> .description = <span class="tok-str">"Enable AVX2 instructions"</span>,</span>
<span class="line" id="L263"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L264"> .avx,</span>
<span class="line" id="L265"> }),</span>
<span class="line" id="L266"> };</span>
<span class="line" id="L267"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx512bf16)] = .{</span>
<span class="line" id="L268"> .llvm_name = <span class="tok-str">"avx512bf16"</span>,</span>
<span class="line" id="L269"> .description = <span class="tok-str">"Support bfloat16 floating point"</span>,</span>
<span class="line" id="L270"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L271"> .avx512bw,</span>
<span class="line" id="L272"> }),</span>
<span class="line" id="L273"> };</span>
<span class="line" id="L274"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx512bitalg)] = .{</span>
<span class="line" id="L275"> .llvm_name = <span class="tok-str">"avx512bitalg"</span>,</span>
<span class="line" id="L276"> .description = <span class="tok-str">"Enable AVX-512 Bit Algorithms"</span>,</span>
<span class="line" id="L277"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L278"> .avx512bw,</span>
<span class="line" id="L279"> }),</span>
<span class="line" id="L280"> };</span>
<span class="line" id="L281"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx512bw)] = .{</span>
<span class="line" id="L282"> .llvm_name = <span class="tok-str">"avx512bw"</span>,</span>
<span class="line" id="L283"> .description = <span class="tok-str">"Enable AVX-512 Byte and Word Instructions"</span>,</span>
<span class="line" id="L284"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L285"> .avx512f,</span>
<span class="line" id="L286"> }),</span>
<span class="line" id="L287"> };</span>
<span class="line" id="L288"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx512cd)] = .{</span>
<span class="line" id="L289"> .llvm_name = <span class="tok-str">"avx512cd"</span>,</span>
<span class="line" id="L290"> .description = <span class="tok-str">"Enable AVX-512 Conflict Detection Instructions"</span>,</span>
<span class="line" id="L291"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L292"> .avx512f,</span>
<span class="line" id="L293"> }),</span>
<span class="line" id="L294"> };</span>
<span class="line" id="L295"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx512dq)] = .{</span>
<span class="line" id="L296"> .llvm_name = <span class="tok-str">"avx512dq"</span>,</span>
<span class="line" id="L297"> .description = <span class="tok-str">"Enable AVX-512 Doubleword and Quadword Instructions"</span>,</span>
<span class="line" id="L298"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L299"> .avx512f,</span>
<span class="line" id="L300"> }),</span>
<span class="line" id="L301"> };</span>
<span class="line" id="L302"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx512er)] = .{</span>
<span class="line" id="L303"> .llvm_name = <span class="tok-str">"avx512er"</span>,</span>
<span class="line" id="L304"> .description = <span class="tok-str">"Enable AVX-512 Exponential and Reciprocal Instructions"</span>,</span>
<span class="line" id="L305"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L306"> .avx512f,</span>
<span class="line" id="L307"> }),</span>
<span class="line" id="L308"> };</span>
<span class="line" id="L309"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx512f)] = .{</span>
<span class="line" id="L310"> .llvm_name = <span class="tok-str">"avx512f"</span>,</span>
<span class="line" id="L311"> .description = <span class="tok-str">"Enable AVX-512 instructions"</span>,</span>
<span class="line" id="L312"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L313"> .avx2,</span>
<span class="line" id="L314"> .f16c,</span>
<span class="line" id="L315"> .fma,</span>
<span class="line" id="L316"> }),</span>
<span class="line" id="L317"> };</span>
<span class="line" id="L318"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx512fp16)] = .{</span>
<span class="line" id="L319"> .llvm_name = <span class="tok-str">"avx512fp16"</span>,</span>
<span class="line" id="L320"> .description = <span class="tok-str">"Support 16-bit floating point"</span>,</span>
<span class="line" id="L321"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L322"> .avx512bw,</span>
<span class="line" id="L323"> .avx512dq,</span>
<span class="line" id="L324"> .avx512vl,</span>
<span class="line" id="L325"> }),</span>
<span class="line" id="L326"> };</span>
<span class="line" id="L327"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx512ifma)] = .{</span>
<span class="line" id="L328"> .llvm_name = <span class="tok-str">"avx512ifma"</span>,</span>
<span class="line" id="L329"> .description = <span class="tok-str">"Enable AVX-512 Integer Fused Multiply-Add"</span>,</span>
<span class="line" id="L330"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L331"> .avx512f,</span>
<span class="line" id="L332"> }),</span>
<span class="line" id="L333"> };</span>
<span class="line" id="L334"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx512pf)] = .{</span>
<span class="line" id="L335"> .llvm_name = <span class="tok-str">"avx512pf"</span>,</span>
<span class="line" id="L336"> .description = <span class="tok-str">"Enable AVX-512 PreFetch Instructions"</span>,</span>
<span class="line" id="L337"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L338"> .avx512f,</span>
<span class="line" id="L339"> }),</span>
<span class="line" id="L340"> };</span>
<span class="line" id="L341"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx512vbmi)] = .{</span>
<span class="line" id="L342"> .llvm_name = <span class="tok-str">"avx512vbmi"</span>,</span>
<span class="line" id="L343"> .description = <span class="tok-str">"Enable AVX-512 Vector Byte Manipulation Instructions"</span>,</span>
<span class="line" id="L344"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L345"> .avx512bw,</span>
<span class="line" id="L346"> }),</span>
<span class="line" id="L347"> };</span>
<span class="line" id="L348"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx512vbmi2)] = .{</span>
<span class="line" id="L349"> .llvm_name = <span class="tok-str">"avx512vbmi2"</span>,</span>
<span class="line" id="L350"> .description = <span class="tok-str">"Enable AVX-512 further Vector Byte Manipulation Instructions"</span>,</span>
<span class="line" id="L351"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L352"> .avx512bw,</span>
<span class="line" id="L353"> }),</span>
<span class="line" id="L354"> };</span>
<span class="line" id="L355"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx512vl)] = .{</span>
<span class="line" id="L356"> .llvm_name = <span class="tok-str">"avx512vl"</span>,</span>
<span class="line" id="L357"> .description = <span class="tok-str">"Enable AVX-512 Vector Length eXtensions"</span>,</span>
<span class="line" id="L358"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L359"> .avx512f,</span>
<span class="line" id="L360"> }),</span>
<span class="line" id="L361"> };</span>
<span class="line" id="L362"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx512vnni)] = .{</span>
<span class="line" id="L363"> .llvm_name = <span class="tok-str">"avx512vnni"</span>,</span>
<span class="line" id="L364"> .description = <span class="tok-str">"Enable AVX-512 Vector Neural Network Instructions"</span>,</span>
<span class="line" id="L365"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L366"> .avx512f,</span>
<span class="line" id="L367"> }),</span>
<span class="line" id="L368"> };</span>
<span class="line" id="L369"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx512vp2intersect)] = .{</span>
<span class="line" id="L370"> .llvm_name = <span class="tok-str">"avx512vp2intersect"</span>,</span>
<span class="line" id="L371"> .description = <span class="tok-str">"Enable AVX-512 vp2intersect"</span>,</span>
<span class="line" id="L372"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L373"> .avx512f,</span>
<span class="line" id="L374"> }),</span>
<span class="line" id="L375"> };</span>
<span class="line" id="L376"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avx512vpopcntdq)] = .{</span>
<span class="line" id="L377"> .llvm_name = <span class="tok-str">"avx512vpopcntdq"</span>,</span>
<span class="line" id="L378"> .description = <span class="tok-str">"Enable AVX-512 Population Count Instructions"</span>,</span>
<span class="line" id="L379"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L380"> .avx512f,</span>
<span class="line" id="L381"> }),</span>
<span class="line" id="L382"> };</span>
<span class="line" id="L383"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avxifma)] = .{</span>
<span class="line" id="L384"> .llvm_name = <span class="tok-str">"avxifma"</span>,</span>
<span class="line" id="L385"> .description = <span class="tok-str">"Enable AVX-IFMA"</span>,</span>
<span class="line" id="L386"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L387"> .avx2,</span>
<span class="line" id="L388"> }),</span>
<span class="line" id="L389"> };</span>
<span class="line" id="L390"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avxneconvert)] = .{</span>
<span class="line" id="L391"> .llvm_name = <span class="tok-str">"avxneconvert"</span>,</span>
<span class="line" id="L392"> .description = <span class="tok-str">"Support AVX-NE-CONVERT instructions"</span>,</span>
<span class="line" id="L393"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L394"> .avx2,</span>
<span class="line" id="L395"> }),</span>
<span class="line" id="L396"> };</span>
<span class="line" id="L397"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avxvnni)] = .{</span>
<span class="line" id="L398"> .llvm_name = <span class="tok-str">"avxvnni"</span>,</span>
<span class="line" id="L399"> .description = <span class="tok-str">"Support AVX_VNNI encoding"</span>,</span>
<span class="line" id="L400"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L401"> .avx2,</span>
<span class="line" id="L402"> }),</span>
<span class="line" id="L403"> };</span>
<span class="line" id="L404"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.avxvnniint8)] = .{</span>
<span class="line" id="L405"> .llvm_name = <span class="tok-str">"avxvnniint8"</span>,</span>
<span class="line" id="L406"> .description = <span class="tok-str">"Enable AVX-VNNI-INT8"</span>,</span>
<span class="line" id="L407"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L408"> .avx2,</span>
<span class="line" id="L409"> }),</span>
<span class="line" id="L410"> };</span>
<span class="line" id="L411"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.bmi)] = .{</span>
<span class="line" id="L412"> .llvm_name = <span class="tok-str">"bmi"</span>,</span>
<span class="line" id="L413"> .description = <span class="tok-str">"Support BMI instructions"</span>,</span>
<span class="line" id="L414"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L415"> };</span>
<span class="line" id="L416"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.bmi2)] = .{</span>
<span class="line" id="L417"> .llvm_name = <span class="tok-str">"bmi2"</span>,</span>
<span class="line" id="L418"> .description = <span class="tok-str">"Support BMI2 instructions"</span>,</span>
<span class="line" id="L419"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L420"> };</span>
<span class="line" id="L421"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.branchfusion)] = .{</span>
<span class="line" id="L422"> .llvm_name = <span class="tok-str">"branchfusion"</span>,</span>
<span class="line" id="L423"> .description = <span class="tok-str">"CMP/TEST can be fused with conditional branches"</span>,</span>
<span class="line" id="L424"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L425"> };</span>
<span class="line" id="L426"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.cldemote)] = .{</span>
<span class="line" id="L427"> .llvm_name = <span class="tok-str">"cldemote"</span>,</span>
<span class="line" id="L428"> .description = <span class="tok-str">"Enable Cache Line Demote"</span>,</span>
<span class="line" id="L429"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L430"> };</span>
<span class="line" id="L431"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.clflushopt)] = .{</span>
<span class="line" id="L432"> .llvm_name = <span class="tok-str">"clflushopt"</span>,</span>
<span class="line" id="L433"> .description = <span class="tok-str">"Flush A Cache Line Optimized"</span>,</span>
<span class="line" id="L434"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L435"> };</span>
<span class="line" id="L436"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.clwb)] = .{</span>
<span class="line" id="L437"> .llvm_name = <span class="tok-str">"clwb"</span>,</span>
<span class="line" id="L438"> .description = <span class="tok-str">"Cache Line Write Back"</span>,</span>
<span class="line" id="L439"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L440"> };</span>
<span class="line" id="L441"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.clzero)] = .{</span>
<span class="line" id="L442"> .llvm_name = <span class="tok-str">"clzero"</span>,</span>
<span class="line" id="L443"> .description = <span class="tok-str">"Enable Cache Line Zero"</span>,</span>
<span class="line" id="L444"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L445"> };</span>
<span class="line" id="L446"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.cmov)] = .{</span>
<span class="line" id="L447"> .llvm_name = <span class="tok-str">"cmov"</span>,</span>
<span class="line" id="L448"> .description = <span class="tok-str">"Enable conditional move instructions"</span>,</span>
<span class="line" id="L449"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L450"> };</span>
<span class="line" id="L451"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.cmpccxadd)] = .{</span>
<span class="line" id="L452"> .llvm_name = <span class="tok-str">"cmpccxadd"</span>,</span>
<span class="line" id="L453"> .description = <span class="tok-str">"Support CMPCCXADD instructions"</span>,</span>
<span class="line" id="L454"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L455"> };</span>
<span class="line" id="L456"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.crc32)] = .{</span>
<span class="line" id="L457"> .llvm_name = <span class="tok-str">"crc32"</span>,</span>
<span class="line" id="L458"> .description = <span class="tok-str">"Enable SSE 4.2 CRC32 instruction (used when SSE4.2 is supported but function is GPR only)"</span>,</span>
<span class="line" id="L459"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L460"> };</span>
<span class="line" id="L461"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.cx16)] = .{</span>
<span class="line" id="L462"> .llvm_name = <span class="tok-str">"cx16"</span>,</span>
<span class="line" id="L463"> .description = <span class="tok-str">"64-bit with cmpxchg16b (this is true for most x86-64 chips, but not the first AMD chips)"</span>,</span>
<span class="line" id="L464"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L465"> .cx8,</span>
<span class="line" id="L466"> }),</span>
<span class="line" id="L467"> };</span>
<span class="line" id="L468"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.cx8)] = .{</span>
<span class="line" id="L469"> .llvm_name = <span class="tok-str">"cx8"</span>,</span>
<span class="line" id="L470"> .description = <span class="tok-str">"Support CMPXCHG8B instructions"</span>,</span>
<span class="line" id="L471"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L472"> };</span>
<span class="line" id="L473"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.enqcmd)] = .{</span>
<span class="line" id="L474"> .llvm_name = <span class="tok-str">"enqcmd"</span>,</span>
<span class="line" id="L475"> .description = <span class="tok-str">"Has ENQCMD instructions"</span>,</span>
<span class="line" id="L476"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L477"> };</span>
<span class="line" id="L478"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.ermsb)] = .{</span>
<span class="line" id="L479"> .llvm_name = <span class="tok-str">"ermsb"</span>,</span>
<span class="line" id="L480"> .description = <span class="tok-str">"REP MOVS/STOS are fast"</span>,</span>
<span class="line" id="L481"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L482"> };</span>
<span class="line" id="L483"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.f16c)] = .{</span>
<span class="line" id="L484"> .llvm_name = <span class="tok-str">"f16c"</span>,</span>
<span class="line" id="L485"> .description = <span class="tok-str">"Support 16-bit floating point conversion instructions"</span>,</span>
<span class="line" id="L486"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L487"> .avx,</span>
<span class="line" id="L488"> }),</span>
<span class="line" id="L489"> };</span>
<span class="line" id="L490"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.false_deps_getmant)] = .{</span>
<span class="line" id="L491"> .llvm_name = <span class="tok-str">"false-deps-getmant"</span>,</span>
<span class="line" id="L492"> .description = <span class="tok-str">"VGETMANTSS/SD/SH and VGETMANDPS/PD(memory version) has a false dependency on dest register"</span>,</span>
<span class="line" id="L493"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L494"> };</span>
<span class="line" id="L495"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.false_deps_lzcnt_tzcnt)] = .{</span>
<span class="line" id="L496"> .llvm_name = <span class="tok-str">"false-deps-lzcnt-tzcnt"</span>,</span>
<span class="line" id="L497"> .description = <span class="tok-str">"LZCNT/TZCNT have a false dependency on dest register"</span>,</span>
<span class="line" id="L498"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L499"> };</span>
<span class="line" id="L500"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.false_deps_mulc)] = .{</span>
<span class="line" id="L501"> .llvm_name = <span class="tok-str">"false-deps-mulc"</span>,</span>
<span class="line" id="L502"> .description = <span class="tok-str">"VF[C]MULCPH/SH has a false dependency on dest register"</span>,</span>
<span class="line" id="L503"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L504"> };</span>
<span class="line" id="L505"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.false_deps_mullq)] = .{</span>
<span class="line" id="L506"> .llvm_name = <span class="tok-str">"false-deps-mullq"</span>,</span>
<span class="line" id="L507"> .description = <span class="tok-str">"VPMULLQ has a false dependency on dest register"</span>,</span>
<span class="line" id="L508"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L509"> };</span>
<span class="line" id="L510"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.false_deps_perm)] = .{</span>
<span class="line" id="L511"> .llvm_name = <span class="tok-str">"false-deps-perm"</span>,</span>
<span class="line" id="L512"> .description = <span class="tok-str">"VPERMD/Q/PS/PD has a false dependency on dest register"</span>,</span>
<span class="line" id="L513"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L514"> };</span>
<span class="line" id="L515"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.false_deps_popcnt)] = .{</span>
<span class="line" id="L516"> .llvm_name = <span class="tok-str">"false-deps-popcnt"</span>,</span>
<span class="line" id="L517"> .description = <span class="tok-str">"POPCNT has a false dependency on dest register"</span>,</span>
<span class="line" id="L518"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L519"> };</span>
<span class="line" id="L520"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.false_deps_range)] = .{</span>
<span class="line" id="L521"> .llvm_name = <span class="tok-str">"false-deps-range"</span>,</span>
<span class="line" id="L522"> .description = <span class="tok-str">"VRANGEPD/PS/SD/SS has a false dependency on dest register"</span>,</span>
<span class="line" id="L523"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L524"> };</span>
<span class="line" id="L525"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_11bytenop)] = .{</span>
<span class="line" id="L526"> .llvm_name = <span class="tok-str">"fast-11bytenop"</span>,</span>
<span class="line" id="L527"> .description = <span class="tok-str">"Target can quickly decode up to 11 byte NOPs"</span>,</span>
<span class="line" id="L528"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L529"> };</span>
<span class="line" id="L530"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_15bytenop)] = .{</span>
<span class="line" id="L531"> .llvm_name = <span class="tok-str">"fast-15bytenop"</span>,</span>
<span class="line" id="L532"> .description = <span class="tok-str">"Target can quickly decode up to 15 byte NOPs"</span>,</span>
<span class="line" id="L533"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L534"> };</span>
<span class="line" id="L535"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_7bytenop)] = .{</span>
<span class="line" id="L536"> .llvm_name = <span class="tok-str">"fast-7bytenop"</span>,</span>
<span class="line" id="L537"> .description = <span class="tok-str">"Target can quickly decode up to 7 byte NOPs"</span>,</span>
<span class="line" id="L538"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L539"> };</span>
<span class="line" id="L540"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_bextr)] = .{</span>
<span class="line" id="L541"> .llvm_name = <span class="tok-str">"fast-bextr"</span>,</span>
<span class="line" id="L542"> .description = <span class="tok-str">"Indicates that the BEXTR instruction is implemented as a single uop with good throughput"</span>,</span>
<span class="line" id="L543"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L544"> };</span>
<span class="line" id="L545"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_gather)] = .{</span>
<span class="line" id="L546"> .llvm_name = <span class="tok-str">"fast-gather"</span>,</span>
<span class="line" id="L547"> .description = <span class="tok-str">"Indicates if gather is reasonably fast (this is true for Skylake client and all AVX-512 CPUs)"</span>,</span>
<span class="line" id="L548"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L549"> };</span>
<span class="line" id="L550"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_hops)] = .{</span>
<span class="line" id="L551"> .llvm_name = <span class="tok-str">"fast-hops"</span>,</span>
<span class="line" id="L552"> .description = <span class="tok-str">"Prefer horizontal vector math instructions (haddp, phsub, etc.) over normal vector instructions with shuffles"</span>,</span>
<span class="line" id="L553"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L554"> };</span>
<span class="line" id="L555"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_lzcnt)] = .{</span>
<span class="line" id="L556"> .llvm_name = <span class="tok-str">"fast-lzcnt"</span>,</span>
<span class="line" id="L557"> .description = <span class="tok-str">"LZCNT instructions are as fast as most simple integer ops"</span>,</span>
<span class="line" id="L558"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L559"> };</span>
<span class="line" id="L560"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_movbe)] = .{</span>
<span class="line" id="L561"> .llvm_name = <span class="tok-str">"fast-movbe"</span>,</span>
<span class="line" id="L562"> .description = <span class="tok-str">"Prefer a movbe over a single-use load + bswap / single-use bswap + store"</span>,</span>
<span class="line" id="L563"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L564"> };</span>
<span class="line" id="L565"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_scalar_fsqrt)] = .{</span>
<span class="line" id="L566"> .llvm_name = <span class="tok-str">"fast-scalar-fsqrt"</span>,</span>
<span class="line" id="L567"> .description = <span class="tok-str">"Scalar SQRT is fast (disable Newton-Raphson)"</span>,</span>
<span class="line" id="L568"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L569"> };</span>
<span class="line" id="L570"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_scalar_shift_masks)] = .{</span>
<span class="line" id="L571"> .llvm_name = <span class="tok-str">"fast-scalar-shift-masks"</span>,</span>
<span class="line" id="L572"> .description = <span class="tok-str">"Prefer a left/right scalar logical shift pair over a shift+and pair"</span>,</span>
<span class="line" id="L573"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L574"> };</span>
<span class="line" id="L575"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_shld_rotate)] = .{</span>
<span class="line" id="L576"> .llvm_name = <span class="tok-str">"fast-shld-rotate"</span>,</span>
<span class="line" id="L577"> .description = <span class="tok-str">"SHLD can be used as a faster rotate"</span>,</span>
<span class="line" id="L578"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L579"> };</span>
<span class="line" id="L580"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_variable_crosslane_shuffle)] = .{</span>
<span class="line" id="L581"> .llvm_name = <span class="tok-str">"fast-variable-crosslane-shuffle"</span>,</span>
<span class="line" id="L582"> .description = <span class="tok-str">"Cross-lane shuffles with variable masks are fast"</span>,</span>
<span class="line" id="L583"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L584"> };</span>
<span class="line" id="L585"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_variable_perlane_shuffle)] = .{</span>
<span class="line" id="L586"> .llvm_name = <span class="tok-str">"fast-variable-perlane-shuffle"</span>,</span>
<span class="line" id="L587"> .description = <span class="tok-str">"Per-lane shuffles with variable masks are fast"</span>,</span>
<span class="line" id="L588"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L589"> };</span>
<span class="line" id="L590"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_vector_fsqrt)] = .{</span>
<span class="line" id="L591"> .llvm_name = <span class="tok-str">"fast-vector-fsqrt"</span>,</span>
<span class="line" id="L592"> .description = <span class="tok-str">"Vector SQRT is fast (disable Newton-Raphson)"</span>,</span>
<span class="line" id="L593"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L594"> };</span>
<span class="line" id="L595"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fast_vector_shift_masks)] = .{</span>
<span class="line" id="L596"> .llvm_name = <span class="tok-str">"fast-vector-shift-masks"</span>,</span>
<span class="line" id="L597"> .description = <span class="tok-str">"Prefer a left/right vector logical shift pair over a shift+and pair"</span>,</span>
<span class="line" id="L598"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L599"> };</span>
<span class="line" id="L600"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fma)] = .{</span>
<span class="line" id="L601"> .llvm_name = <span class="tok-str">"fma"</span>,</span>
<span class="line" id="L602"> .description = <span class="tok-str">"Enable three-operand fused multiply-add"</span>,</span>
<span class="line" id="L603"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L604"> .avx,</span>
<span class="line" id="L605"> }),</span>
<span class="line" id="L606"> };</span>
<span class="line" id="L607"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fma4)] = .{</span>
<span class="line" id="L608"> .llvm_name = <span class="tok-str">"fma4"</span>,</span>
<span class="line" id="L609"> .description = <span class="tok-str">"Enable four-operand fused multiply-add"</span>,</span>
<span class="line" id="L610"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L611"> .avx,</span>
<span class="line" id="L612"> .sse4a,</span>
<span class="line" id="L613"> }),</span>
<span class="line" id="L614"> };</span>
<span class="line" id="L615"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fsgsbase)] = .{</span>
<span class="line" id="L616"> .llvm_name = <span class="tok-str">"fsgsbase"</span>,</span>
<span class="line" id="L617"> .description = <span class="tok-str">"Support FS/GS Base instructions"</span>,</span>
<span class="line" id="L618"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L619"> };</span>
<span class="line" id="L620"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fsrm)] = .{</span>
<span class="line" id="L621"> .llvm_name = <span class="tok-str">"fsrm"</span>,</span>
<span class="line" id="L622"> .description = <span class="tok-str">"REP MOVSB of short lengths is faster"</span>,</span>
<span class="line" id="L623"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L624"> };</span>
<span class="line" id="L625"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.fxsr)] = .{</span>
<span class="line" id="L626"> .llvm_name = <span class="tok-str">"fxsr"</span>,</span>
<span class="line" id="L627"> .description = <span class="tok-str">"Support fxsave/fxrestore instructions"</span>,</span>
<span class="line" id="L628"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L629"> };</span>
<span class="line" id="L630"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.gfni)] = .{</span>
<span class="line" id="L631"> .llvm_name = <span class="tok-str">"gfni"</span>,</span>
<span class="line" id="L632"> .description = <span class="tok-str">"Enable Galois Field Arithmetic Instructions"</span>,</span>
<span class="line" id="L633"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L634"> .sse2,</span>
<span class="line" id="L635"> }),</span>
<span class="line" id="L636"> };</span>
<span class="line" id="L637"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.harden_sls_ijmp)] = .{</span>
<span class="line" id="L638"> .llvm_name = <span class="tok-str">"harden-sls-ijmp"</span>,</span>
<span class="line" id="L639"> .description = <span class="tok-str">"Harden against straight line speculation across indirect JMP instructions."</span>,</span>
<span class="line" id="L640"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L641"> };</span>
<span class="line" id="L642"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.harden_sls_ret)] = .{</span>
<span class="line" id="L643"> .llvm_name = <span class="tok-str">"harden-sls-ret"</span>,</span>
<span class="line" id="L644"> .description = <span class="tok-str">"Harden against straight line speculation across RET instructions."</span>,</span>
<span class="line" id="L645"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L646"> };</span>
<span class="line" id="L647"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.hreset)] = .{</span>
<span class="line" id="L648"> .llvm_name = <span class="tok-str">"hreset"</span>,</span>
<span class="line" id="L649"> .description = <span class="tok-str">"Has hreset instruction"</span>,</span>
<span class="line" id="L650"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L651"> };</span>
<span class="line" id="L652"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.idivl_to_divb)] = .{</span>
<span class="line" id="L653"> .llvm_name = <span class="tok-str">"idivl-to-divb"</span>,</span>
<span class="line" id="L654"> .description = <span class="tok-str">"Use 8-bit divide for positive values less than 256"</span>,</span>
<span class="line" id="L655"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L656"> };</span>
<span class="line" id="L657"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.idivq_to_divl)] = .{</span>
<span class="line" id="L658"> .llvm_name = <span class="tok-str">"idivq-to-divl"</span>,</span>
<span class="line" id="L659"> .description = <span class="tok-str">"Use 32-bit divide for positive values less than 2^32"</span>,</span>
<span class="line" id="L660"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L661"> };</span>
<span class="line" id="L662"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.invpcid)] = .{</span>
<span class="line" id="L663"> .llvm_name = <span class="tok-str">"invpcid"</span>,</span>
<span class="line" id="L664"> .description = <span class="tok-str">"Invalidate Process-Context Identifier"</span>,</span>
<span class="line" id="L665"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L666"> };</span>
<span class="line" id="L667"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.kl)] = .{</span>
<span class="line" id="L668"> .llvm_name = <span class="tok-str">"kl"</span>,</span>
<span class="line" id="L669"> .description = <span class="tok-str">"Support Key Locker kl Instructions"</span>,</span>
<span class="line" id="L670"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L671"> .sse2,</span>
<span class="line" id="L672"> }),</span>
<span class="line" id="L673"> };</span>
<span class="line" id="L674"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.lea_sp)] = .{</span>
<span class="line" id="L675"> .llvm_name = <span class="tok-str">"lea-sp"</span>,</span>
<span class="line" id="L676"> .description = <span class="tok-str">"Use LEA for adjusting the stack pointer (this is an optimization for Intel Atom processors)"</span>,</span>
<span class="line" id="L677"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L678"> };</span>
<span class="line" id="L679"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.lea_uses_ag)] = .{</span>
<span class="line" id="L680"> .llvm_name = <span class="tok-str">"lea-uses-ag"</span>,</span>
<span class="line" id="L681"> .description = <span class="tok-str">"LEA instruction needs inputs at AG stage"</span>,</span>
<span class="line" id="L682"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L683"> };</span>
<span class="line" id="L684"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.lvi_cfi)] = .{</span>
<span class="line" id="L685"> .llvm_name = <span class="tok-str">"lvi-cfi"</span>,</span>
<span class="line" id="L686"> .description = <span class="tok-str">"Prevent indirect calls/branches from using a memory operand, and precede all indirect calls/branches from a register with an LFENCE instruction to serialize control flow. Also decompose RET instructions into a POP+LFENCE+JMP sequence."</span>,</span>
<span class="line" id="L687"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L688"> };</span>
<span class="line" id="L689"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.lvi_load_hardening)] = .{</span>
<span class="line" id="L690"> .llvm_name = <span class="tok-str">"lvi-load-hardening"</span>,</span>
<span class="line" id="L691"> .description = <span class="tok-str">"Insert LFENCE instructions to prevent data speculatively injected into loads from being used maliciously."</span>,</span>
<span class="line" id="L692"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L693"> };</span>
<span class="line" id="L694"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.lwp)] = .{</span>
<span class="line" id="L695"> .llvm_name = <span class="tok-str">"lwp"</span>,</span>
<span class="line" id="L696"> .description = <span class="tok-str">"Enable LWP instructions"</span>,</span>
<span class="line" id="L697"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L698"> };</span>
<span class="line" id="L699"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.lzcnt)] = .{</span>
<span class="line" id="L700"> .llvm_name = <span class="tok-str">"lzcnt"</span>,</span>
<span class="line" id="L701"> .description = <span class="tok-str">"Support LZCNT instruction"</span>,</span>
<span class="line" id="L702"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L703"> };</span>
<span class="line" id="L704"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.macrofusion)] = .{</span>
<span class="line" id="L705"> .llvm_name = <span class="tok-str">"macrofusion"</span>,</span>
<span class="line" id="L706"> .description = <span class="tok-str">"Various instructions can be fused with conditional branches"</span>,</span>
<span class="line" id="L707"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L708"> };</span>
<span class="line" id="L709"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.mmx)] = .{</span>
<span class="line" id="L710"> .llvm_name = <span class="tok-str">"mmx"</span>,</span>
<span class="line" id="L711"> .description = <span class="tok-str">"Enable MMX instructions"</span>,</span>
<span class="line" id="L712"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L713"> };</span>
<span class="line" id="L714"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.movbe)] = .{</span>
<span class="line" id="L715"> .llvm_name = <span class="tok-str">"movbe"</span>,</span>
<span class="line" id="L716"> .description = <span class="tok-str">"Support MOVBE instruction"</span>,</span>
<span class="line" id="L717"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L718"> };</span>
<span class="line" id="L719"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.movdir64b)] = .{</span>
<span class="line" id="L720"> .llvm_name = <span class="tok-str">"movdir64b"</span>,</span>
<span class="line" id="L721"> .description = <span class="tok-str">"Support movdir64b instruction (direct store 64 bytes)"</span>,</span>
<span class="line" id="L722"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L723"> };</span>
<span class="line" id="L724"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.movdiri)] = .{</span>
<span class="line" id="L725"> .llvm_name = <span class="tok-str">"movdiri"</span>,</span>
<span class="line" id="L726"> .description = <span class="tok-str">"Support movdiri instruction (direct store integer)"</span>,</span>
<span class="line" id="L727"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L728"> };</span>
<span class="line" id="L729"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.mwaitx)] = .{</span>
<span class="line" id="L730"> .llvm_name = <span class="tok-str">"mwaitx"</span>,</span>
<span class="line" id="L731"> .description = <span class="tok-str">"Enable MONITORX/MWAITX timer functionality"</span>,</span>
<span class="line" id="L732"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L733"> };</span>
<span class="line" id="L734"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.nopl)] = .{</span>
<span class="line" id="L735"> .llvm_name = <span class="tok-str">"nopl"</span>,</span>
<span class="line" id="L736"> .description = <span class="tok-str">"Enable NOPL instruction (generally pentium pro+)"</span>,</span>
<span class="line" id="L737"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L738"> };</span>
<span class="line" id="L739"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.pad_short_functions)] = .{</span>
<span class="line" id="L740"> .llvm_name = <span class="tok-str">"pad-short-functions"</span>,</span>
<span class="line" id="L741"> .description = <span class="tok-str">"Pad short functions (to prevent a stall when returning too early)"</span>,</span>
<span class="line" id="L742"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L743"> };</span>
<span class="line" id="L744"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.pclmul)] = .{</span>
<span class="line" id="L745"> .llvm_name = <span class="tok-str">"pclmul"</span>,</span>
<span class="line" id="L746"> .description = <span class="tok-str">"Enable packed carry-less multiplication instructions"</span>,</span>
<span class="line" id="L747"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L748"> .sse2,</span>
<span class="line" id="L749"> }),</span>
<span class="line" id="L750"> };</span>
<span class="line" id="L751"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.pconfig)] = .{</span>
<span class="line" id="L752"> .llvm_name = <span class="tok-str">"pconfig"</span>,</span>
<span class="line" id="L753"> .description = <span class="tok-str">"platform configuration instruction"</span>,</span>
<span class="line" id="L754"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L755"> };</span>
<span class="line" id="L756"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.pku)] = .{</span>
<span class="line" id="L757"> .llvm_name = <span class="tok-str">"pku"</span>,</span>
<span class="line" id="L758"> .description = <span class="tok-str">"Enable protection keys"</span>,</span>
<span class="line" id="L759"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L760"> };</span>
<span class="line" id="L761"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.popcnt)] = .{</span>
<span class="line" id="L762"> .llvm_name = <span class="tok-str">"popcnt"</span>,</span>
<span class="line" id="L763"> .description = <span class="tok-str">"Support POPCNT instruction"</span>,</span>
<span class="line" id="L764"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L765"> };</span>
<span class="line" id="L766"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.prefer_128_bit)] = .{</span>
<span class="line" id="L767"> .llvm_name = <span class="tok-str">"prefer-128-bit"</span>,</span>
<span class="line" id="L768"> .description = <span class="tok-str">"Prefer 128-bit AVX instructions"</span>,</span>
<span class="line" id="L769"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L770"> };</span>
<span class="line" id="L771"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.prefer_256_bit)] = .{</span>
<span class="line" id="L772"> .llvm_name = <span class="tok-str">"prefer-256-bit"</span>,</span>
<span class="line" id="L773"> .description = <span class="tok-str">"Prefer 256-bit AVX instructions"</span>,</span>
<span class="line" id="L774"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L775"> };</span>
<span class="line" id="L776"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.prefer_mask_registers)] = .{</span>
<span class="line" id="L777"> .llvm_name = <span class="tok-str">"prefer-mask-registers"</span>,</span>
<span class="line" id="L778"> .description = <span class="tok-str">"Prefer AVX512 mask registers over PTEST/MOVMSK"</span>,</span>
<span class="line" id="L779"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L780"> };</span>
<span class="line" id="L781"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.prefetchi)] = .{</span>
<span class="line" id="L782"> .llvm_name = <span class="tok-str">"prefetchi"</span>,</span>
<span class="line" id="L783"> .description = <span class="tok-str">"Prefetch instruction with T0 or T1 Hint"</span>,</span>
<span class="line" id="L784"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L785"> };</span>
<span class="line" id="L786"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.prefetchwt1)] = .{</span>
<span class="line" id="L787"> .llvm_name = <span class="tok-str">"prefetchwt1"</span>,</span>
<span class="line" id="L788"> .description = <span class="tok-str">"Prefetch with Intent to Write and T1 Hint"</span>,</span>
<span class="line" id="L789"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L790"> };</span>
<span class="line" id="L791"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.prfchw)] = .{</span>
<span class="line" id="L792"> .llvm_name = <span class="tok-str">"prfchw"</span>,</span>
<span class="line" id="L793"> .description = <span class="tok-str">"Support PRFCHW instructions"</span>,</span>
<span class="line" id="L794"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L795"> };</span>
<span class="line" id="L796"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.ptwrite)] = .{</span>
<span class="line" id="L797"> .llvm_name = <span class="tok-str">"ptwrite"</span>,</span>
<span class="line" id="L798"> .description = <span class="tok-str">"Support ptwrite instruction"</span>,</span>
<span class="line" id="L799"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L800"> };</span>
<span class="line" id="L801"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.raoint)] = .{</span>
<span class="line" id="L802"> .llvm_name = <span class="tok-str">"raoint"</span>,</span>
<span class="line" id="L803"> .description = <span class="tok-str">"Support RAO-INT instructions"</span>,</span>
<span class="line" id="L804"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L805"> };</span>
<span class="line" id="L806"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.rdpid)] = .{</span>
<span class="line" id="L807"> .llvm_name = <span class="tok-str">"rdpid"</span>,</span>
<span class="line" id="L808"> .description = <span class="tok-str">"Support RDPID instructions"</span>,</span>
<span class="line" id="L809"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L810"> };</span>
<span class="line" id="L811"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.rdpru)] = .{</span>
<span class="line" id="L812"> .llvm_name = <span class="tok-str">"rdpru"</span>,</span>
<span class="line" id="L813"> .description = <span class="tok-str">"Support RDPRU instructions"</span>,</span>
<span class="line" id="L814"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L815"> };</span>
<span class="line" id="L816"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.rdrnd)] = .{</span>
<span class="line" id="L817"> .llvm_name = <span class="tok-str">"rdrnd"</span>,</span>
<span class="line" id="L818"> .description = <span class="tok-str">"Support RDRAND instruction"</span>,</span>
<span class="line" id="L819"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L820"> };</span>
<span class="line" id="L821"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.rdseed)] = .{</span>
<span class="line" id="L822"> .llvm_name = <span class="tok-str">"rdseed"</span>,</span>
<span class="line" id="L823"> .description = <span class="tok-str">"Support RDSEED instruction"</span>,</span>
<span class="line" id="L824"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L825"> };</span>
<span class="line" id="L826"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.retpoline)] = .{</span>
<span class="line" id="L827"> .llvm_name = <span class="tok-str">"retpoline"</span>,</span>
<span class="line" id="L828"> .description = <span class="tok-str">"Remove speculation of indirect branches from the generated code, either by avoiding them entirely or lowering them with a speculation blocking construct"</span>,</span>
<span class="line" id="L829"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L830"> .retpoline_indirect_branches,</span>
<span class="line" id="L831"> .retpoline_indirect_calls,</span>
<span class="line" id="L832"> }),</span>
<span class="line" id="L833"> };</span>
<span class="line" id="L834"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.retpoline_external_thunk)] = .{</span>
<span class="line" id="L835"> .llvm_name = <span class="tok-str">"retpoline-external-thunk"</span>,</span>
<span class="line" id="L836"> .description = <span class="tok-str">"When lowering an indirect call or branch using a `retpoline`, rely on the specified user provided thunk rather than emitting one ourselves. Only has effect when combined with some other retpoline feature"</span>,</span>
<span class="line" id="L837"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L838"> .retpoline_indirect_calls,</span>
<span class="line" id="L839"> }),</span>
<span class="line" id="L840"> };</span>
<span class="line" id="L841"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.retpoline_indirect_branches)] = .{</span>
<span class="line" id="L842"> .llvm_name = <span class="tok-str">"retpoline-indirect-branches"</span>,</span>
<span class="line" id="L843"> .description = <span class="tok-str">"Remove speculation of indirect branches from the generated code"</span>,</span>
<span class="line" id="L844"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L845"> };</span>
<span class="line" id="L846"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.retpoline_indirect_calls)] = .{</span>
<span class="line" id="L847"> .llvm_name = <span class="tok-str">"retpoline-indirect-calls"</span>,</span>
<span class="line" id="L848"> .description = <span class="tok-str">"Remove speculation of indirect calls from the generated code"</span>,</span>
<span class="line" id="L849"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L850"> };</span>
<span class="line" id="L851"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.rtm)] = .{</span>
<span class="line" id="L852"> .llvm_name = <span class="tok-str">"rtm"</span>,</span>
<span class="line" id="L853"> .description = <span class="tok-str">"Support RTM instructions"</span>,</span>
<span class="line" id="L854"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L855"> };</span>
<span class="line" id="L856"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sahf)] = .{</span>
<span class="line" id="L857"> .llvm_name = <span class="tok-str">"sahf"</span>,</span>
<span class="line" id="L858"> .description = <span class="tok-str">"Support LAHF and SAHF instructions in 64-bit mode"</span>,</span>
<span class="line" id="L859"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L860"> };</span>
<span class="line" id="L861"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sbb_dep_breaking)] = .{</span>
<span class="line" id="L862"> .llvm_name = <span class="tok-str">"sbb-dep-breaking"</span>,</span>
<span class="line" id="L863"> .description = <span class="tok-str">"SBB with same register has no source dependency"</span>,</span>
<span class="line" id="L864"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L865"> };</span>
<span class="line" id="L866"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.serialize)] = .{</span>
<span class="line" id="L867"> .llvm_name = <span class="tok-str">"serialize"</span>,</span>
<span class="line" id="L868"> .description = <span class="tok-str">"Has serialize instruction"</span>,</span>
<span class="line" id="L869"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L870"> };</span>
<span class="line" id="L871"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.seses)] = .{</span>
<span class="line" id="L872"> .llvm_name = <span class="tok-str">"seses"</span>,</span>
<span class="line" id="L873"> .description = <span class="tok-str">"Prevent speculative execution side channel timing attacks by inserting a speculation barrier before memory reads, memory writes, and conditional branches. Implies LVI Control Flow integrity."</span>,</span>
<span class="line" id="L874"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L875"> .lvi_cfi,</span>
<span class="line" id="L876"> }),</span>
<span class="line" id="L877"> };</span>
<span class="line" id="L878"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sgx)] = .{</span>
<span class="line" id="L879"> .llvm_name = <span class="tok-str">"sgx"</span>,</span>
<span class="line" id="L880"> .description = <span class="tok-str">"Enable Software Guard Extensions"</span>,</span>
<span class="line" id="L881"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L882"> };</span>
<span class="line" id="L883"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sha)] = .{</span>
<span class="line" id="L884"> .llvm_name = <span class="tok-str">"sha"</span>,</span>
<span class="line" id="L885"> .description = <span class="tok-str">"Enable SHA instructions"</span>,</span>
<span class="line" id="L886"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L887"> .sse2,</span>
<span class="line" id="L888"> }),</span>
<span class="line" id="L889"> };</span>
<span class="line" id="L890"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.shstk)] = .{</span>
<span class="line" id="L891"> .llvm_name = <span class="tok-str">"shstk"</span>,</span>
<span class="line" id="L892"> .description = <span class="tok-str">"Support CET Shadow-Stack instructions"</span>,</span>
<span class="line" id="L893"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L894"> };</span>
<span class="line" id="L895"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.slow_3ops_lea)] = .{</span>
<span class="line" id="L896"> .llvm_name = <span class="tok-str">"slow-3ops-lea"</span>,</span>
<span class="line" id="L897"> .description = <span class="tok-str">"LEA instruction with 3 ops or certain registers is slow"</span>,</span>
<span class="line" id="L898"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L899"> };</span>
<span class="line" id="L900"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.slow_incdec)] = .{</span>
<span class="line" id="L901"> .llvm_name = <span class="tok-str">"slow-incdec"</span>,</span>
<span class="line" id="L902"> .description = <span class="tok-str">"INC and DEC instructions are slower than ADD and SUB"</span>,</span>
<span class="line" id="L903"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L904"> };</span>
<span class="line" id="L905"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.slow_lea)] = .{</span>
<span class="line" id="L906"> .llvm_name = <span class="tok-str">"slow-lea"</span>,</span>
<span class="line" id="L907"> .description = <span class="tok-str">"LEA instruction with certain arguments is slow"</span>,</span>
<span class="line" id="L908"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L909"> };</span>
<span class="line" id="L910"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.slow_pmaddwd)] = .{</span>
<span class="line" id="L911"> .llvm_name = <span class="tok-str">"slow-pmaddwd"</span>,</span>
<span class="line" id="L912"> .description = <span class="tok-str">"PMADDWD is slower than PMULLD"</span>,</span>
<span class="line" id="L913"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L914"> };</span>
<span class="line" id="L915"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.slow_pmulld)] = .{</span>
<span class="line" id="L916"> .llvm_name = <span class="tok-str">"slow-pmulld"</span>,</span>
<span class="line" id="L917"> .description = <span class="tok-str">"PMULLD instruction is slow (compared to PMULLW/PMULHW and PMULUDQ)"</span>,</span>
<span class="line" id="L918"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L919"> };</span>
<span class="line" id="L920"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.slow_shld)] = .{</span>
<span class="line" id="L921"> .llvm_name = <span class="tok-str">"slow-shld"</span>,</span>
<span class="line" id="L922"> .description = <span class="tok-str">"SHLD instruction is slow"</span>,</span>
<span class="line" id="L923"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L924"> };</span>
<span class="line" id="L925"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.slow_two_mem_ops)] = .{</span>
<span class="line" id="L926"> .llvm_name = <span class="tok-str">"slow-two-mem-ops"</span>,</span>
<span class="line" id="L927"> .description = <span class="tok-str">"Two memory operand instructions are slow"</span>,</span>
<span class="line" id="L928"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L929"> };</span>
<span class="line" id="L930"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.slow_unaligned_mem_16)] = .{</span>
<span class="line" id="L931"> .llvm_name = <span class="tok-str">"slow-unaligned-mem-16"</span>,</span>
<span class="line" id="L932"> .description = <span class="tok-str">"Slow unaligned 16-byte memory access"</span>,</span>
<span class="line" id="L933"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L934"> };</span>
<span class="line" id="L935"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.slow_unaligned_mem_32)] = .{</span>
<span class="line" id="L936"> .llvm_name = <span class="tok-str">"slow-unaligned-mem-32"</span>,</span>
<span class="line" id="L937"> .description = <span class="tok-str">"Slow unaligned 32-byte memory access"</span>,</span>
<span class="line" id="L938"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L939"> };</span>
<span class="line" id="L940"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.soft_float)] = .{</span>
<span class="line" id="L941"> .llvm_name = <span class="tok-str">"soft-float"</span>,</span>
<span class="line" id="L942"> .description = <span class="tok-str">"Use software floating point features"</span>,</span>
<span class="line" id="L943"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L944"> };</span>
<span class="line" id="L945"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sse)] = .{</span>
<span class="line" id="L946"> .llvm_name = <span class="tok-str">"sse"</span>,</span>
<span class="line" id="L947"> .description = <span class="tok-str">"Enable SSE instructions"</span>,</span>
<span class="line" id="L948"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L949"> };</span>
<span class="line" id="L950"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sse2)] = .{</span>
<span class="line" id="L951"> .llvm_name = <span class="tok-str">"sse2"</span>,</span>
<span class="line" id="L952"> .description = <span class="tok-str">"Enable SSE2 instructions"</span>,</span>
<span class="line" id="L953"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L954"> .sse,</span>
<span class="line" id="L955"> }),</span>
<span class="line" id="L956"> };</span>
<span class="line" id="L957"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sse3)] = .{</span>
<span class="line" id="L958"> .llvm_name = <span class="tok-str">"sse3"</span>,</span>
<span class="line" id="L959"> .description = <span class="tok-str">"Enable SSE3 instructions"</span>,</span>
<span class="line" id="L960"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L961"> .sse2,</span>
<span class="line" id="L962"> }),</span>
<span class="line" id="L963"> };</span>
<span class="line" id="L964"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sse4_1)] = .{</span>
<span class="line" id="L965"> .llvm_name = <span class="tok-str">"sse4.1"</span>,</span>
<span class="line" id="L966"> .description = <span class="tok-str">"Enable SSE 4.1 instructions"</span>,</span>
<span class="line" id="L967"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L968"> .ssse3,</span>
<span class="line" id="L969"> }),</span>
<span class="line" id="L970"> };</span>
<span class="line" id="L971"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sse4_2)] = .{</span>
<span class="line" id="L972"> .llvm_name = <span class="tok-str">"sse4.2"</span>,</span>
<span class="line" id="L973"> .description = <span class="tok-str">"Enable SSE 4.2 instructions"</span>,</span>
<span class="line" id="L974"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L975"> .sse4_1,</span>
<span class="line" id="L976"> }),</span>
<span class="line" id="L977"> };</span>
<span class="line" id="L978"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sse4a)] = .{</span>
<span class="line" id="L979"> .llvm_name = <span class="tok-str">"sse4a"</span>,</span>
<span class="line" id="L980"> .description = <span class="tok-str">"Support SSE 4a instructions"</span>,</span>
<span class="line" id="L981"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L982"> .sse3,</span>
<span class="line" id="L983"> }),</span>
<span class="line" id="L984"> };</span>
<span class="line" id="L985"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.sse_unaligned_mem)] = .{</span>
<span class="line" id="L986"> .llvm_name = <span class="tok-str">"sse-unaligned-mem"</span>,</span>
<span class="line" id="L987"> .description = <span class="tok-str">"Allow unaligned memory operands with SSE instructions (this may require setting a configuration bit in the processor)"</span>,</span>
<span class="line" id="L988"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L989"> };</span>
<span class="line" id="L990"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.ssse3)] = .{</span>
<span class="line" id="L991"> .llvm_name = <span class="tok-str">"ssse3"</span>,</span>
<span class="line" id="L992"> .description = <span class="tok-str">"Enable SSSE3 instructions"</span>,</span>
<span class="line" id="L993"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L994"> .sse3,</span>
<span class="line" id="L995"> }),</span>
<span class="line" id="L996"> };</span>
<span class="line" id="L997"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.tagged_globals)] = .{</span>
<span class="line" id="L998"> .llvm_name = <span class="tok-str">"tagged-globals"</span>,</span>
<span class="line" id="L999"> .description = <span class="tok-str">"Use an instruction sequence for taking the address of a global that allows a memory tag in the upper address bits."</span>,</span>
<span class="line" id="L1000"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1001"> };</span>
<span class="line" id="L1002"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.tbm)] = .{</span>
<span class="line" id="L1003"> .llvm_name = <span class="tok-str">"tbm"</span>,</span>
<span class="line" id="L1004"> .description = <span class="tok-str">"Enable TBM instructions"</span>,</span>
<span class="line" id="L1005"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1006"> };</span>
<span class="line" id="L1007"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.tsxldtrk)] = .{</span>
<span class="line" id="L1008"> .llvm_name = <span class="tok-str">"tsxldtrk"</span>,</span>
<span class="line" id="L1009"> .description = <span class="tok-str">"Support TSXLDTRK instructions"</span>,</span>
<span class="line" id="L1010"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1011"> };</span>
<span class="line" id="L1012"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.uintr)] = .{</span>
<span class="line" id="L1013"> .llvm_name = <span class="tok-str">"uintr"</span>,</span>
<span class="line" id="L1014"> .description = <span class="tok-str">"Has UINTR Instructions"</span>,</span>
<span class="line" id="L1015"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1016"> };</span>
<span class="line" id="L1017"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.use_glm_div_sqrt_costs)] = .{</span>
<span class="line" id="L1018"> .llvm_name = <span class="tok-str">"use-glm-div-sqrt-costs"</span>,</span>
<span class="line" id="L1019"> .description = <span class="tok-str">"Use Goldmont specific floating point div/sqrt costs"</span>,</span>
<span class="line" id="L1020"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1021"> };</span>
<span class="line" id="L1022"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.use_slm_arith_costs)] = .{</span>
<span class="line" id="L1023"> .llvm_name = <span class="tok-str">"use-slm-arith-costs"</span>,</span>
<span class="line" id="L1024"> .description = <span class="tok-str">"Use Silvermont specific arithmetic costs"</span>,</span>
<span class="line" id="L1025"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1026"> };</span>
<span class="line" id="L1027"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vaes)] = .{</span>
<span class="line" id="L1028"> .llvm_name = <span class="tok-str">"vaes"</span>,</span>
<span class="line" id="L1029"> .description = <span class="tok-str">"Promote selected AES instructions to AVX512/AVX registers"</span>,</span>
<span class="line" id="L1030"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L1031"> .aes,</span>
<span class="line" id="L1032"> .avx,</span>
<span class="line" id="L1033"> }),</span>
<span class="line" id="L1034"> };</span>
<span class="line" id="L1035"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vpclmulqdq)] = .{</span>
<span class="line" id="L1036"> .llvm_name = <span class="tok-str">"vpclmulqdq"</span>,</span>
<span class="line" id="L1037"> .description = <span class="tok-str">"Enable vpclmulqdq instructions"</span>,</span>
<span class="line" id="L1038"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L1039"> .avx,</span>
<span class="line" id="L1040"> .pclmul,</span>
<span class="line" id="L1041"> }),</span>
<span class="line" id="L1042"> };</span>
<span class="line" id="L1043"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.vzeroupper)] = .{</span>
<span class="line" id="L1044"> .llvm_name = <span class="tok-str">"vzeroupper"</span>,</span>
<span class="line" id="L1045"> .description = <span class="tok-str">"Should insert vzeroupper instructions"</span>,</span>
<span class="line" id="L1046"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1047"> };</span>
<span class="line" id="L1048"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.waitpkg)] = .{</span>
<span class="line" id="L1049"> .llvm_name = <span class="tok-str">"waitpkg"</span>,</span>
<span class="line" id="L1050"> .description = <span class="tok-str">"Wait and pause enhancements"</span>,</span>
<span class="line" id="L1051"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1052"> };</span>
<span class="line" id="L1053"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.wbnoinvd)] = .{</span>
<span class="line" id="L1054"> .llvm_name = <span class="tok-str">"wbnoinvd"</span>,</span>
<span class="line" id="L1055"> .description = <span class="tok-str">"Write Back No Invalidate"</span>,</span>
<span class="line" id="L1056"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1057"> };</span>
<span class="line" id="L1058"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.widekl)] = .{</span>
<span class="line" id="L1059"> .llvm_name = <span class="tok-str">"widekl"</span>,</span>
<span class="line" id="L1060"> .description = <span class="tok-str">"Support Key Locker wide Instructions"</span>,</span>
<span class="line" id="L1061"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L1062"> .kl,</span>
<span class="line" id="L1063"> }),</span>
<span class="line" id="L1064"> };</span>
<span class="line" id="L1065"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.x87)] = .{</span>
<span class="line" id="L1066"> .llvm_name = <span class="tok-str">"x87"</span>,</span>
<span class="line" id="L1067"> .description = <span class="tok-str">"Enable X87 float instructions"</span>,</span>
<span class="line" id="L1068"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1069"> };</span>
<span class="line" id="L1070"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.xop)] = .{</span>
<span class="line" id="L1071"> .llvm_name = <span class="tok-str">"xop"</span>,</span>
<span class="line" id="L1072"> .description = <span class="tok-str">"Enable XOP instructions"</span>,</span>
<span class="line" id="L1073"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L1074"> .fma4,</span>
<span class="line" id="L1075"> }),</span>
<span class="line" id="L1076"> };</span>
<span class="line" id="L1077"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.xsave)] = .{</span>
<span class="line" id="L1078"> .llvm_name = <span class="tok-str">"xsave"</span>,</span>
<span class="line" id="L1079"> .description = <span class="tok-str">"Support xsave instructions"</span>,</span>
<span class="line" id="L1080"> .dependencies = featureSet(&[_]Feature{}),</span>
<span class="line" id="L1081"> };</span>
<span class="line" id="L1082"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.xsavec)] = .{</span>
<span class="line" id="L1083"> .llvm_name = <span class="tok-str">"xsavec"</span>,</span>
<span class="line" id="L1084"> .description = <span class="tok-str">"Support xsavec instructions"</span>,</span>
<span class="line" id="L1085"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L1086"> .xsave,</span>
<span class="line" id="L1087"> }),</span>
<span class="line" id="L1088"> };</span>
<span class="line" id="L1089"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.xsaveopt)] = .{</span>
<span class="line" id="L1090"> .llvm_name = <span class="tok-str">"xsaveopt"</span>,</span>
<span class="line" id="L1091"> .description = <span class="tok-str">"Support xsaveopt instructions"</span>,</span>
<span class="line" id="L1092"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L1093"> .xsave,</span>
<span class="line" id="L1094"> }),</span>
<span class="line" id="L1095"> };</span>
<span class="line" id="L1096"> result[<span class="tok-builtin">@intFromEnum</span>(Feature.xsaves)] = .{</span>
<span class="line" id="L1097"> .llvm_name = <span class="tok-str">"xsaves"</span>,</span>
<span class="line" id="L1098"> .description = <span class="tok-str">"Support xsaves instructions"</span>,</span>
<span class="line" id="L1099"> .dependencies = featureSet(&[_]Feature{</span>
<span class="line" id="L1100"> .xsave,</span>
<span class="line" id="L1101"> }),</span>
<span class="line" id="L1102"> };</span>
<span class="line" id="L1103"> <span class="tok-kw">const</span> ti = <span class="tok-builtin">@typeInfo</span>(Feature);</span>
<span class="line" id="L1104"> <span class="tok-kw">for</span> (&result, <span class="tok-number">0</span>..) |*elem, i| {</span>
<span class="line" id="L1105"> elem.index = i;</span>
<span class="line" id="L1106"> elem.name = ti.Enum.fields[i].name;</span>
<span class="line" id="L1107"> }</span>
<span class="line" id="L1108"> <span class="tok-kw">break</span> :blk result;</span>
<span class="line" id="L1109">};</span>
<span class="line" id="L1110"></span>
<span class="line" id="L1111"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> cpu = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1112"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> alderlake = CpuModel{</span>
<span class="line" id="L1113"> .name = <span class="tok-str">"alderlake"</span>,</span>
<span class="line" id="L1114"> .llvm_name = <span class="tok-str">"alderlake"</span>,</span>
<span class="line" id="L1115"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1116"> .@"64bit",</span>
<span class="line" id="L1117"> .adx,</span>
<span class="line" id="L1118"> .allow_light_256_bit,</span>
<span class="line" id="L1119"> .avxvnni,</span>
<span class="line" id="L1120"> .bmi,</span>
<span class="line" id="L1121"> .bmi2,</span>
<span class="line" id="L1122"> .cldemote,</span>
<span class="line" id="L1123"> .clflushopt,</span>
<span class="line" id="L1124"> .clwb,</span>
<span class="line" id="L1125"> .cmov,</span>
<span class="line" id="L1126"> .crc32,</span>
<span class="line" id="L1127"> .cx16,</span>
<span class="line" id="L1128"> .f16c,</span>
<span class="line" id="L1129"> .false_deps_perm,</span>
<span class="line" id="L1130"> .false_deps_popcnt,</span>
<span class="line" id="L1131"> .fast_15bytenop,</span>
<span class="line" id="L1132"> .fast_gather,</span>
<span class="line" id="L1133"> .fast_scalar_fsqrt,</span>
<span class="line" id="L1134"> .fast_shld_rotate,</span>
<span class="line" id="L1135"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L1136"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L1137"> .fast_vector_fsqrt,</span>
<span class="line" id="L1138"> .fma,</span>
<span class="line" id="L1139"> .fsgsbase,</span>
<span class="line" id="L1140"> .fxsr,</span>
<span class="line" id="L1141"> .gfni,</span>
<span class="line" id="L1142"> .hreset,</span>
<span class="line" id="L1143"> .idivq_to_divl,</span>
<span class="line" id="L1144"> .invpcid,</span>
<span class="line" id="L1145"> .lzcnt,</span>
<span class="line" id="L1146"> .macrofusion,</span>
<span class="line" id="L1147"> .mmx,</span>
<span class="line" id="L1148"> .movbe,</span>
<span class="line" id="L1149"> .movdir64b,</span>
<span class="line" id="L1150"> .movdiri,</span>
<span class="line" id="L1151"> .nopl,</span>
<span class="line" id="L1152"> .pconfig,</span>
<span class="line" id="L1153"> .pku,</span>
<span class="line" id="L1154"> .popcnt,</span>
<span class="line" id="L1155"> .prfchw,</span>
<span class="line" id="L1156"> .ptwrite,</span>
<span class="line" id="L1157"> .rdpid,</span>
<span class="line" id="L1158"> .rdrnd,</span>
<span class="line" id="L1159"> .rdseed,</span>
<span class="line" id="L1160"> .sahf,</span>
<span class="line" id="L1161"> .serialize,</span>
<span class="line" id="L1162"> .sha,</span>
<span class="line" id="L1163"> .shstk,</span>
<span class="line" id="L1164"> .slow_3ops_lea,</span>
<span class="line" id="L1165"> .vaes,</span>
<span class="line" id="L1166"> .vpclmulqdq,</span>
<span class="line" id="L1167"> .vzeroupper,</span>
<span class="line" id="L1168"> .waitpkg,</span>
<span class="line" id="L1169"> .widekl,</span>
<span class="line" id="L1170"> .x87,</span>
<span class="line" id="L1171"> .xsavec,</span>
<span class="line" id="L1172"> .xsaveopt,</span>
<span class="line" id="L1173"> .xsaves,</span>
<span class="line" id="L1174"> }),</span>
<span class="line" id="L1175"> };</span>
<span class="line" id="L1176"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> amdfam10 = CpuModel{</span>
<span class="line" id="L1177"> .name = <span class="tok-str">"amdfam10"</span>,</span>
<span class="line" id="L1178"> .llvm_name = <span class="tok-str">"amdfam10"</span>,</span>
<span class="line" id="L1179"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1180"> .@"3dnowa",</span>
<span class="line" id="L1181"> .@"64bit",</span>
<span class="line" id="L1182"> .cmov,</span>
<span class="line" id="L1183"> .cx16,</span>
<span class="line" id="L1184"> .fast_scalar_shift_masks,</span>
<span class="line" id="L1185"> .fxsr,</span>
<span class="line" id="L1186"> .lzcnt,</span>
<span class="line" id="L1187"> .nopl,</span>
<span class="line" id="L1188"> .popcnt,</span>
<span class="line" id="L1189"> .prfchw,</span>
<span class="line" id="L1190"> .sahf,</span>
<span class="line" id="L1191"> .sbb_dep_breaking,</span>
<span class="line" id="L1192"> .slow_shld,</span>
<span class="line" id="L1193"> .sse4a,</span>
<span class="line" id="L1194"> .vzeroupper,</span>
<span class="line" id="L1195"> .x87,</span>
<span class="line" id="L1196"> }),</span>
<span class="line" id="L1197"> };</span>
<span class="line" id="L1198"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> athlon = CpuModel{</span>
<span class="line" id="L1199"> .name = <span class="tok-str">"athlon"</span>,</span>
<span class="line" id="L1200"> .llvm_name = <span class="tok-str">"athlon"</span>,</span>
<span class="line" id="L1201"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1202"> .@"3dnowa",</span>
<span class="line" id="L1203"> .cmov,</span>
<span class="line" id="L1204"> .cx8,</span>
<span class="line" id="L1205"> .nopl,</span>
<span class="line" id="L1206"> .slow_shld,</span>
<span class="line" id="L1207"> .slow_unaligned_mem_16,</span>
<span class="line" id="L1208"> .vzeroupper,</span>
<span class="line" id="L1209"> .x87,</span>
<span class="line" id="L1210"> }),</span>
<span class="line" id="L1211"> };</span>
<span class="line" id="L1212"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> athlon64 = CpuModel{</span>
<span class="line" id="L1213"> .name = <span class="tok-str">"athlon64"</span>,</span>
<span class="line" id="L1214"> .llvm_name = <span class="tok-str">"athlon64"</span>,</span>
<span class="line" id="L1215"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1216"> .@"3dnowa",</span>
<span class="line" id="L1217"> .@"64bit",</span>
<span class="line" id="L1218"> .cmov,</span>
<span class="line" id="L1219"> .cx8,</span>
<span class="line" id="L1220"> .fast_scalar_shift_masks,</span>
<span class="line" id="L1221"> .fxsr,</span>
<span class="line" id="L1222"> .nopl,</span>
<span class="line" id="L1223"> .sbb_dep_breaking,</span>
<span class="line" id="L1224"> .slow_shld,</span>
<span class="line" id="L1225"> .slow_unaligned_mem_16,</span>
<span class="line" id="L1226"> .sse2,</span>
<span class="line" id="L1227"> .vzeroupper,</span>
<span class="line" id="L1228"> .x87,</span>
<span class="line" id="L1229"> }),</span>
<span class="line" id="L1230"> };</span>
<span class="line" id="L1231"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> athlon64_sse3 = CpuModel{</span>
<span class="line" id="L1232"> .name = <span class="tok-str">"athlon64_sse3"</span>,</span>
<span class="line" id="L1233"> .llvm_name = <span class="tok-str">"athlon64-sse3"</span>,</span>
<span class="line" id="L1234"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1235"> .@"3dnowa",</span>
<span class="line" id="L1236"> .@"64bit",</span>
<span class="line" id="L1237"> .cmov,</span>
<span class="line" id="L1238"> .cx16,</span>
<span class="line" id="L1239"> .fast_scalar_shift_masks,</span>
<span class="line" id="L1240"> .fxsr,</span>
<span class="line" id="L1241"> .nopl,</span>
<span class="line" id="L1242"> .sbb_dep_breaking,</span>
<span class="line" id="L1243"> .slow_shld,</span>
<span class="line" id="L1244"> .slow_unaligned_mem_16,</span>
<span class="line" id="L1245"> .sse3,</span>
<span class="line" id="L1246"> .vzeroupper,</span>
<span class="line" id="L1247"> .x87,</span>
<span class="line" id="L1248"> }),</span>
<span class="line" id="L1249"> };</span>
<span class="line" id="L1250"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> athlon_4 = CpuModel{</span>
<span class="line" id="L1251"> .name = <span class="tok-str">"athlon_4"</span>,</span>
<span class="line" id="L1252"> .llvm_name = <span class="tok-str">"athlon-4"</span>,</span>
<span class="line" id="L1253"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1254"> .@"3dnowa",</span>
<span class="line" id="L1255"> .cmov,</span>
<span class="line" id="L1256"> .cx8,</span>
<span class="line" id="L1257"> .fxsr,</span>
<span class="line" id="L1258"> .nopl,</span>
<span class="line" id="L1259"> .slow_shld,</span>
<span class="line" id="L1260"> .slow_unaligned_mem_16,</span>
<span class="line" id="L1261"> .sse,</span>
<span class="line" id="L1262"> .vzeroupper,</span>
<span class="line" id="L1263"> .x87,</span>
<span class="line" id="L1264"> }),</span>
<span class="line" id="L1265"> };</span>
<span class="line" id="L1266"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> athlon_fx = CpuModel{</span>
<span class="line" id="L1267"> .name = <span class="tok-str">"athlon_fx"</span>,</span>
<span class="line" id="L1268"> .llvm_name = <span class="tok-str">"athlon-fx"</span>,</span>
<span class="line" id="L1269"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1270"> .@"3dnowa",</span>
<span class="line" id="L1271"> .@"64bit",</span>
<span class="line" id="L1272"> .cmov,</span>
<span class="line" id="L1273"> .cx8,</span>
<span class="line" id="L1274"> .fast_scalar_shift_masks,</span>
<span class="line" id="L1275"> .fxsr,</span>
<span class="line" id="L1276"> .nopl,</span>
<span class="line" id="L1277"> .sbb_dep_breaking,</span>
<span class="line" id="L1278"> .slow_shld,</span>
<span class="line" id="L1279"> .slow_unaligned_mem_16,</span>
<span class="line" id="L1280"> .sse2,</span>
<span class="line" id="L1281"> .vzeroupper,</span>
<span class="line" id="L1282"> .x87,</span>
<span class="line" id="L1283"> }),</span>
<span class="line" id="L1284"> };</span>
<span class="line" id="L1285"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> athlon_mp = CpuModel{</span>
<span class="line" id="L1286"> .name = <span class="tok-str">"athlon_mp"</span>,</span>
<span class="line" id="L1287"> .llvm_name = <span class="tok-str">"athlon-mp"</span>,</span>
<span class="line" id="L1288"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1289"> .@"3dnowa",</span>
<span class="line" id="L1290"> .cmov,</span>
<span class="line" id="L1291"> .cx8,</span>
<span class="line" id="L1292"> .fxsr,</span>
<span class="line" id="L1293"> .nopl,</span>
<span class="line" id="L1294"> .slow_shld,</span>
<span class="line" id="L1295"> .slow_unaligned_mem_16,</span>
<span class="line" id="L1296"> .sse,</span>
<span class="line" id="L1297"> .vzeroupper,</span>
<span class="line" id="L1298"> .x87,</span>
<span class="line" id="L1299"> }),</span>
<span class="line" id="L1300"> };</span>
<span class="line" id="L1301"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> athlon_tbird = CpuModel{</span>
<span class="line" id="L1302"> .name = <span class="tok-str">"athlon_tbird"</span>,</span>
<span class="line" id="L1303"> .llvm_name = <span class="tok-str">"athlon-tbird"</span>,</span>
<span class="line" id="L1304"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1305"> .@"3dnowa",</span>
<span class="line" id="L1306"> .cmov,</span>
<span class="line" id="L1307"> .cx8,</span>
<span class="line" id="L1308"> .nopl,</span>
<span class="line" id="L1309"> .slow_shld,</span>
<span class="line" id="L1310"> .slow_unaligned_mem_16,</span>
<span class="line" id="L1311"> .vzeroupper,</span>
<span class="line" id="L1312"> .x87,</span>
<span class="line" id="L1313"> }),</span>
<span class="line" id="L1314"> };</span>
<span class="line" id="L1315"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> athlon_xp = CpuModel{</span>
<span class="line" id="L1316"> .name = <span class="tok-str">"athlon_xp"</span>,</span>
<span class="line" id="L1317"> .llvm_name = <span class="tok-str">"athlon-xp"</span>,</span>
<span class="line" id="L1318"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1319"> .@"3dnowa",</span>
<span class="line" id="L1320"> .cmov,</span>
<span class="line" id="L1321"> .cx8,</span>
<span class="line" id="L1322"> .fxsr,</span>
<span class="line" id="L1323"> .nopl,</span>
<span class="line" id="L1324"> .slow_shld,</span>
<span class="line" id="L1325"> .slow_unaligned_mem_16,</span>
<span class="line" id="L1326"> .sse,</span>
<span class="line" id="L1327"> .vzeroupper,</span>
<span class="line" id="L1328"> .x87,</span>
<span class="line" id="L1329"> }),</span>
<span class="line" id="L1330"> };</span>
<span class="line" id="L1331"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> atom = CpuModel{</span>
<span class="line" id="L1332"> .name = <span class="tok-str">"atom"</span>,</span>
<span class="line" id="L1333"> .llvm_name = <span class="tok-str">"atom"</span>,</span>
<span class="line" id="L1334"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1335"> .@"64bit",</span>
<span class="line" id="L1336"> .cmov,</span>
<span class="line" id="L1337"> .cx16,</span>
<span class="line" id="L1338"> .fxsr,</span>
<span class="line" id="L1339"> .idivl_to_divb,</span>
<span class="line" id="L1340"> .idivq_to_divl,</span>
<span class="line" id="L1341"> .lea_sp,</span>
<span class="line" id="L1342"> .lea_uses_ag,</span>
<span class="line" id="L1343"> .mmx,</span>
<span class="line" id="L1344"> .movbe,</span>
<span class="line" id="L1345"> .nopl,</span>
<span class="line" id="L1346"> .pad_short_functions,</span>
<span class="line" id="L1347"> .sahf,</span>
<span class="line" id="L1348"> .slow_two_mem_ops,</span>
<span class="line" id="L1349"> .slow_unaligned_mem_16,</span>
<span class="line" id="L1350"> .ssse3,</span>
<span class="line" id="L1351"> .vzeroupper,</span>
<span class="line" id="L1352"> .x87,</span>
<span class="line" id="L1353"> }),</span>
<span class="line" id="L1354"> };</span>
<span class="line" id="L1355"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> barcelona = CpuModel{</span>
<span class="line" id="L1356"> .name = <span class="tok-str">"barcelona"</span>,</span>
<span class="line" id="L1357"> .llvm_name = <span class="tok-str">"barcelona"</span>,</span>
<span class="line" id="L1358"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1359"> .@"3dnowa",</span>
<span class="line" id="L1360"> .@"64bit",</span>
<span class="line" id="L1361"> .cmov,</span>
<span class="line" id="L1362"> .cx16,</span>
<span class="line" id="L1363"> .fast_scalar_shift_masks,</span>
<span class="line" id="L1364"> .fxsr,</span>
<span class="line" id="L1365"> .lzcnt,</span>
<span class="line" id="L1366"> .nopl,</span>
<span class="line" id="L1367"> .popcnt,</span>
<span class="line" id="L1368"> .prfchw,</span>
<span class="line" id="L1369"> .sahf,</span>
<span class="line" id="L1370"> .sbb_dep_breaking,</span>
<span class="line" id="L1371"> .slow_shld,</span>
<span class="line" id="L1372"> .sse4a,</span>
<span class="line" id="L1373"> .vzeroupper,</span>
<span class="line" id="L1374"> .x87,</span>
<span class="line" id="L1375"> }),</span>
<span class="line" id="L1376"> };</span>
<span class="line" id="L1377"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> bdver1 = CpuModel{</span>
<span class="line" id="L1378"> .name = <span class="tok-str">"bdver1"</span>,</span>
<span class="line" id="L1379"> .llvm_name = <span class="tok-str">"bdver1"</span>,</span>
<span class="line" id="L1380"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1381"> .@"64bit",</span>
<span class="line" id="L1382"> .aes,</span>
<span class="line" id="L1383"> .branchfusion,</span>
<span class="line" id="L1384"> .cmov,</span>
<span class="line" id="L1385"> .crc32,</span>
<span class="line" id="L1386"> .cx16,</span>
<span class="line" id="L1387"> .fast_11bytenop,</span>
<span class="line" id="L1388"> .fast_scalar_shift_masks,</span>
<span class="line" id="L1389"> .fxsr,</span>
<span class="line" id="L1390"> .lwp,</span>
<span class="line" id="L1391"> .lzcnt,</span>
<span class="line" id="L1392"> .mmx,</span>
<span class="line" id="L1393"> .nopl,</span>
<span class="line" id="L1394"> .pclmul,</span>
<span class="line" id="L1395"> .popcnt,</span>
<span class="line" id="L1396"> .prfchw,</span>
<span class="line" id="L1397"> .sahf,</span>
<span class="line" id="L1398"> .sbb_dep_breaking,</span>
<span class="line" id="L1399"> .slow_shld,</span>
<span class="line" id="L1400"> .vzeroupper,</span>
<span class="line" id="L1401"> .x87,</span>
<span class="line" id="L1402"> .xop,</span>
<span class="line" id="L1403"> .xsave,</span>
<span class="line" id="L1404"> }),</span>
<span class="line" id="L1405"> };</span>
<span class="line" id="L1406"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> bdver2 = CpuModel{</span>
<span class="line" id="L1407"> .name = <span class="tok-str">"bdver2"</span>,</span>
<span class="line" id="L1408"> .llvm_name = <span class="tok-str">"bdver2"</span>,</span>
<span class="line" id="L1409"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1410"> .@"64bit",</span>
<span class="line" id="L1411"> .aes,</span>
<span class="line" id="L1412"> .bmi,</span>
<span class="line" id="L1413"> .branchfusion,</span>
<span class="line" id="L1414"> .cmov,</span>
<span class="line" id="L1415"> .crc32,</span>
<span class="line" id="L1416"> .cx16,</span>
<span class="line" id="L1417"> .f16c,</span>
<span class="line" id="L1418"> .fast_11bytenop,</span>
<span class="line" id="L1419"> .fast_bextr,</span>
<span class="line" id="L1420"> .fast_movbe,</span>
<span class="line" id="L1421"> .fast_scalar_shift_masks,</span>
<span class="line" id="L1422"> .fma,</span>
<span class="line" id="L1423"> .fxsr,</span>
<span class="line" id="L1424"> .lwp,</span>
<span class="line" id="L1425"> .lzcnt,</span>
<span class="line" id="L1426"> .mmx,</span>
<span class="line" id="L1427"> .nopl,</span>
<span class="line" id="L1428"> .pclmul,</span>
<span class="line" id="L1429"> .popcnt,</span>
<span class="line" id="L1430"> .prfchw,</span>
<span class="line" id="L1431"> .sahf,</span>
<span class="line" id="L1432"> .sbb_dep_breaking,</span>
<span class="line" id="L1433"> .slow_shld,</span>
<span class="line" id="L1434"> .tbm,</span>
<span class="line" id="L1435"> .vzeroupper,</span>
<span class="line" id="L1436"> .x87,</span>
<span class="line" id="L1437"> .xop,</span>
<span class="line" id="L1438"> .xsave,</span>
<span class="line" id="L1439"> }),</span>
<span class="line" id="L1440"> };</span>
<span class="line" id="L1441"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> bdver3 = CpuModel{</span>
<span class="line" id="L1442"> .name = <span class="tok-str">"bdver3"</span>,</span>
<span class="line" id="L1443"> .llvm_name = <span class="tok-str">"bdver3"</span>,</span>
<span class="line" id="L1444"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1445"> .@"64bit",</span>
<span class="line" id="L1446"> .aes,</span>
<span class="line" id="L1447"> .bmi,</span>
<span class="line" id="L1448"> .branchfusion,</span>
<span class="line" id="L1449"> .cmov,</span>
<span class="line" id="L1450"> .crc32,</span>
<span class="line" id="L1451"> .cx16,</span>
<span class="line" id="L1452"> .f16c,</span>
<span class="line" id="L1453"> .fast_11bytenop,</span>
<span class="line" id="L1454"> .fast_bextr,</span>
<span class="line" id="L1455"> .fast_movbe,</span>
<span class="line" id="L1456"> .fast_scalar_shift_masks,</span>
<span class="line" id="L1457"> .fma,</span>
<span class="line" id="L1458"> .fsgsbase,</span>
<span class="line" id="L1459"> .fxsr,</span>
<span class="line" id="L1460"> .lwp,</span>
<span class="line" id="L1461"> .lzcnt,</span>
<span class="line" id="L1462"> .mmx,</span>
<span class="line" id="L1463"> .nopl,</span>
<span class="line" id="L1464"> .pclmul,</span>
<span class="line" id="L1465"> .popcnt,</span>
<span class="line" id="L1466"> .prfchw,</span>
<span class="line" id="L1467"> .sahf,</span>
<span class="line" id="L1468"> .sbb_dep_breaking,</span>
<span class="line" id="L1469"> .slow_shld,</span>
<span class="line" id="L1470"> .tbm,</span>
<span class="line" id="L1471"> .vzeroupper,</span>
<span class="line" id="L1472"> .x87,</span>
<span class="line" id="L1473"> .xop,</span>
<span class="line" id="L1474"> .xsaveopt,</span>
<span class="line" id="L1475"> }),</span>
<span class="line" id="L1476"> };</span>
<span class="line" id="L1477"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> bdver4 = CpuModel{</span>
<span class="line" id="L1478"> .name = <span class="tok-str">"bdver4"</span>,</span>
<span class="line" id="L1479"> .llvm_name = <span class="tok-str">"bdver4"</span>,</span>
<span class="line" id="L1480"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1481"> .@"64bit",</span>
<span class="line" id="L1482"> .aes,</span>
<span class="line" id="L1483"> .avx2,</span>
<span class="line" id="L1484"> .bmi,</span>
<span class="line" id="L1485"> .bmi2,</span>
<span class="line" id="L1486"> .branchfusion,</span>
<span class="line" id="L1487"> .cmov,</span>
<span class="line" id="L1488"> .crc32,</span>
<span class="line" id="L1489"> .cx16,</span>
<span class="line" id="L1490"> .f16c,</span>
<span class="line" id="L1491"> .fast_11bytenop,</span>
<span class="line" id="L1492"> .fast_bextr,</span>
<span class="line" id="L1493"> .fast_movbe,</span>
<span class="line" id="L1494"> .fast_scalar_shift_masks,</span>
<span class="line" id="L1495"> .fma,</span>
<span class="line" id="L1496"> .fsgsbase,</span>
<span class="line" id="L1497"> .fxsr,</span>
<span class="line" id="L1498"> .lwp,</span>
<span class="line" id="L1499"> .lzcnt,</span>
<span class="line" id="L1500"> .mmx,</span>
<span class="line" id="L1501"> .movbe,</span>
<span class="line" id="L1502"> .mwaitx,</span>
<span class="line" id="L1503"> .nopl,</span>
<span class="line" id="L1504"> .pclmul,</span>
<span class="line" id="L1505"> .popcnt,</span>
<span class="line" id="L1506"> .prfchw,</span>
<span class="line" id="L1507"> .rdrnd,</span>
<span class="line" id="L1508"> .sahf,</span>
<span class="line" id="L1509"> .sbb_dep_breaking,</span>
<span class="line" id="L1510"> .slow_shld,</span>
<span class="line" id="L1511"> .tbm,</span>
<span class="line" id="L1512"> .vzeroupper,</span>
<span class="line" id="L1513"> .x87,</span>
<span class="line" id="L1514"> .xop,</span>
<span class="line" id="L1515"> .xsaveopt,</span>
<span class="line" id="L1516"> }),</span>
<span class="line" id="L1517"> };</span>
<span class="line" id="L1518"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> bonnell = CpuModel{</span>
<span class="line" id="L1519"> .name = <span class="tok-str">"bonnell"</span>,</span>
<span class="line" id="L1520"> .llvm_name = <span class="tok-str">"bonnell"</span>,</span>
<span class="line" id="L1521"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1522"> .@"64bit",</span>
<span class="line" id="L1523"> .cmov,</span>
<span class="line" id="L1524"> .cx16,</span>
<span class="line" id="L1525"> .fxsr,</span>
<span class="line" id="L1526"> .idivl_to_divb,</span>
<span class="line" id="L1527"> .idivq_to_divl,</span>
<span class="line" id="L1528"> .lea_sp,</span>
<span class="line" id="L1529"> .lea_uses_ag,</span>
<span class="line" id="L1530"> .mmx,</span>
<span class="line" id="L1531"> .movbe,</span>
<span class="line" id="L1532"> .nopl,</span>
<span class="line" id="L1533"> .pad_short_functions,</span>
<span class="line" id="L1534"> .sahf,</span>
<span class="line" id="L1535"> .slow_two_mem_ops,</span>
<span class="line" id="L1536"> .slow_unaligned_mem_16,</span>
<span class="line" id="L1537"> .ssse3,</span>
<span class="line" id="L1538"> .vzeroupper,</span>
<span class="line" id="L1539"> .x87,</span>
<span class="line" id="L1540"> }),</span>
<span class="line" id="L1541"> };</span>
<span class="line" id="L1542"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> broadwell = CpuModel{</span>
<span class="line" id="L1543"> .name = <span class="tok-str">"broadwell"</span>,</span>
<span class="line" id="L1544"> .llvm_name = <span class="tok-str">"broadwell"</span>,</span>
<span class="line" id="L1545"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1546"> .@"64bit",</span>
<span class="line" id="L1547"> .adx,</span>
<span class="line" id="L1548"> .allow_light_256_bit,</span>
<span class="line" id="L1549"> .avx2,</span>
<span class="line" id="L1550"> .bmi,</span>
<span class="line" id="L1551"> .bmi2,</span>
<span class="line" id="L1552"> .cmov,</span>
<span class="line" id="L1553"> .crc32,</span>
<span class="line" id="L1554"> .cx16,</span>
<span class="line" id="L1555"> .ermsb,</span>
<span class="line" id="L1556"> .f16c,</span>
<span class="line" id="L1557"> .false_deps_lzcnt_tzcnt,</span>
<span class="line" id="L1558"> .false_deps_popcnt,</span>
<span class="line" id="L1559"> .fast_15bytenop,</span>
<span class="line" id="L1560"> .fast_scalar_fsqrt,</span>
<span class="line" id="L1561"> .fast_shld_rotate,</span>
<span class="line" id="L1562"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L1563"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L1564"> .fma,</span>
<span class="line" id="L1565"> .fsgsbase,</span>
<span class="line" id="L1566"> .fxsr,</span>
<span class="line" id="L1567"> .idivq_to_divl,</span>
<span class="line" id="L1568"> .invpcid,</span>
<span class="line" id="L1569"> .lzcnt,</span>
<span class="line" id="L1570"> .macrofusion,</span>
<span class="line" id="L1571"> .mmx,</span>
<span class="line" id="L1572"> .movbe,</span>
<span class="line" id="L1573"> .nopl,</span>
<span class="line" id="L1574"> .pclmul,</span>
<span class="line" id="L1575"> .popcnt,</span>
<span class="line" id="L1576"> .prfchw,</span>
<span class="line" id="L1577"> .rdrnd,</span>
<span class="line" id="L1578"> .rdseed,</span>
<span class="line" id="L1579"> .sahf,</span>
<span class="line" id="L1580"> .slow_3ops_lea,</span>
<span class="line" id="L1581"> .vzeroupper,</span>
<span class="line" id="L1582"> .x87,</span>
<span class="line" id="L1583"> .xsaveopt,</span>
<span class="line" id="L1584"> }),</span>
<span class="line" id="L1585"> };</span>
<span class="line" id="L1586"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> btver1 = CpuModel{</span>
<span class="line" id="L1587"> .name = <span class="tok-str">"btver1"</span>,</span>
<span class="line" id="L1588"> .llvm_name = <span class="tok-str">"btver1"</span>,</span>
<span class="line" id="L1589"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1590"> .@"64bit",</span>
<span class="line" id="L1591"> .cmov,</span>
<span class="line" id="L1592"> .cx16,</span>
<span class="line" id="L1593"> .fast_15bytenop,</span>
<span class="line" id="L1594"> .fast_scalar_shift_masks,</span>
<span class="line" id="L1595"> .fast_vector_shift_masks,</span>
<span class="line" id="L1596"> .fxsr,</span>
<span class="line" id="L1597"> .lzcnt,</span>
<span class="line" id="L1598"> .mmx,</span>
<span class="line" id="L1599"> .nopl,</span>
<span class="line" id="L1600"> .popcnt,</span>
<span class="line" id="L1601"> .prfchw,</span>
<span class="line" id="L1602"> .sahf,</span>
<span class="line" id="L1603"> .sbb_dep_breaking,</span>
<span class="line" id="L1604"> .slow_shld,</span>
<span class="line" id="L1605"> .sse4a,</span>
<span class="line" id="L1606"> .ssse3,</span>
<span class="line" id="L1607"> .vzeroupper,</span>
<span class="line" id="L1608"> .x87,</span>
<span class="line" id="L1609"> }),</span>
<span class="line" id="L1610"> };</span>
<span class="line" id="L1611"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> btver2 = CpuModel{</span>
<span class="line" id="L1612"> .name = <span class="tok-str">"btver2"</span>,</span>
<span class="line" id="L1613"> .llvm_name = <span class="tok-str">"btver2"</span>,</span>
<span class="line" id="L1614"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1615"> .@"64bit",</span>
<span class="line" id="L1616"> .aes,</span>
<span class="line" id="L1617"> .bmi,</span>
<span class="line" id="L1618"> .cmov,</span>
<span class="line" id="L1619"> .crc32,</span>
<span class="line" id="L1620"> .cx16,</span>
<span class="line" id="L1621"> .f16c,</span>
<span class="line" id="L1622"> .fast_15bytenop,</span>
<span class="line" id="L1623"> .fast_bextr,</span>
<span class="line" id="L1624"> .fast_hops,</span>
<span class="line" id="L1625"> .fast_lzcnt,</span>
<span class="line" id="L1626"> .fast_movbe,</span>
<span class="line" id="L1627"> .fast_scalar_shift_masks,</span>
<span class="line" id="L1628"> .fast_vector_shift_masks,</span>
<span class="line" id="L1629"> .fxsr,</span>
<span class="line" id="L1630"> .lzcnt,</span>
<span class="line" id="L1631"> .mmx,</span>
<span class="line" id="L1632"> .movbe,</span>
<span class="line" id="L1633"> .nopl,</span>
<span class="line" id="L1634"> .pclmul,</span>
<span class="line" id="L1635"> .popcnt,</span>
<span class="line" id="L1636"> .prfchw,</span>
<span class="line" id="L1637"> .sahf,</span>
<span class="line" id="L1638"> .sbb_dep_breaking,</span>
<span class="line" id="L1639"> .slow_shld,</span>
<span class="line" id="L1640"> .sse4a,</span>
<span class="line" id="L1641"> .x87,</span>
<span class="line" id="L1642"> .xsaveopt,</span>
<span class="line" id="L1643"> }),</span>
<span class="line" id="L1644"> };</span>
<span class="line" id="L1645"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> c3 = CpuModel{</span>
<span class="line" id="L1646"> .name = <span class="tok-str">"c3"</span>,</span>
<span class="line" id="L1647"> .llvm_name = <span class="tok-str">"c3"</span>,</span>
<span class="line" id="L1648"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1649"> .@"3dnow",</span>
<span class="line" id="L1650"> .slow_unaligned_mem_16,</span>
<span class="line" id="L1651"> .vzeroupper,</span>
<span class="line" id="L1652"> .x87,</span>
<span class="line" id="L1653"> }),</span>
<span class="line" id="L1654"> };</span>
<span class="line" id="L1655"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> c3_2 = CpuModel{</span>
<span class="line" id="L1656"> .name = <span class="tok-str">"c3_2"</span>,</span>
<span class="line" id="L1657"> .llvm_name = <span class="tok-str">"c3-2"</span>,</span>
<span class="line" id="L1658"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1659"> .cmov,</span>
<span class="line" id="L1660"> .cx8,</span>
<span class="line" id="L1661"> .fxsr,</span>
<span class="line" id="L1662"> .mmx,</span>
<span class="line" id="L1663"> .slow_unaligned_mem_16,</span>
<span class="line" id="L1664"> .sse,</span>
<span class="line" id="L1665"> .vzeroupper,</span>
<span class="line" id="L1666"> .x87,</span>
<span class="line" id="L1667"> }),</span>
<span class="line" id="L1668"> };</span>
<span class="line" id="L1669"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> cannonlake = CpuModel{</span>
<span class="line" id="L1670"> .name = <span class="tok-str">"cannonlake"</span>,</span>
<span class="line" id="L1671"> .llvm_name = <span class="tok-str">"cannonlake"</span>,</span>
<span class="line" id="L1672"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1673"> .@"64bit",</span>
<span class="line" id="L1674"> .adx,</span>
<span class="line" id="L1675"> .aes,</span>
<span class="line" id="L1676"> .allow_light_256_bit,</span>
<span class="line" id="L1677"> .avx512cd,</span>
<span class="line" id="L1678"> .avx512dq,</span>
<span class="line" id="L1679"> .avx512ifma,</span>
<span class="line" id="L1680"> .avx512vbmi,</span>
<span class="line" id="L1681"> .avx512vl,</span>
<span class="line" id="L1682"> .bmi,</span>
<span class="line" id="L1683"> .bmi2,</span>
<span class="line" id="L1684"> .clflushopt,</span>
<span class="line" id="L1685"> .cmov,</span>
<span class="line" id="L1686"> .crc32,</span>
<span class="line" id="L1687"> .cx16,</span>
<span class="line" id="L1688"> .ermsb,</span>
<span class="line" id="L1689"> .fast_15bytenop,</span>
<span class="line" id="L1690"> .fast_gather,</span>
<span class="line" id="L1691"> .fast_scalar_fsqrt,</span>
<span class="line" id="L1692"> .fast_shld_rotate,</span>
<span class="line" id="L1693"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L1694"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L1695"> .fast_vector_fsqrt,</span>
<span class="line" id="L1696"> .fsgsbase,</span>
<span class="line" id="L1697"> .fxsr,</span>
<span class="line" id="L1698"> .idivq_to_divl,</span>
<span class="line" id="L1699"> .invpcid,</span>
<span class="line" id="L1700"> .lzcnt,</span>
<span class="line" id="L1701"> .macrofusion,</span>
<span class="line" id="L1702"> .mmx,</span>
<span class="line" id="L1703"> .movbe,</span>
<span class="line" id="L1704"> .nopl,</span>
<span class="line" id="L1705"> .pclmul,</span>
<span class="line" id="L1706"> .pku,</span>
<span class="line" id="L1707"> .popcnt,</span>
<span class="line" id="L1708"> .prefer_256_bit,</span>
<span class="line" id="L1709"> .prfchw,</span>
<span class="line" id="L1710"> .rdrnd,</span>
<span class="line" id="L1711"> .rdseed,</span>
<span class="line" id="L1712"> .sahf,</span>
<span class="line" id="L1713"> .sha,</span>
<span class="line" id="L1714"> .slow_3ops_lea,</span>
<span class="line" id="L1715"> .vzeroupper,</span>
<span class="line" id="L1716"> .x87,</span>
<span class="line" id="L1717"> .xsavec,</span>
<span class="line" id="L1718"> .xsaveopt,</span>
<span class="line" id="L1719"> .xsaves,</span>
<span class="line" id="L1720"> }),</span>
<span class="line" id="L1721"> };</span>
<span class="line" id="L1722"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> cascadelake = CpuModel{</span>
<span class="line" id="L1723"> .name = <span class="tok-str">"cascadelake"</span>,</span>
<span class="line" id="L1724"> .llvm_name = <span class="tok-str">"cascadelake"</span>,</span>
<span class="line" id="L1725"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1726"> .@"64bit",</span>
<span class="line" id="L1727"> .adx,</span>
<span class="line" id="L1728"> .aes,</span>
<span class="line" id="L1729"> .allow_light_256_bit,</span>
<span class="line" id="L1730"> .avx512bw,</span>
<span class="line" id="L1731"> .avx512cd,</span>
<span class="line" id="L1732"> .avx512dq,</span>
<span class="line" id="L1733"> .avx512vl,</span>
<span class="line" id="L1734"> .avx512vnni,</span>
<span class="line" id="L1735"> .bmi,</span>
<span class="line" id="L1736"> .bmi2,</span>
<span class="line" id="L1737"> .clflushopt,</span>
<span class="line" id="L1738"> .clwb,</span>
<span class="line" id="L1739"> .cmov,</span>
<span class="line" id="L1740"> .crc32,</span>
<span class="line" id="L1741"> .cx16,</span>
<span class="line" id="L1742"> .ermsb,</span>
<span class="line" id="L1743"> .false_deps_popcnt,</span>
<span class="line" id="L1744"> .fast_15bytenop,</span>
<span class="line" id="L1745"> .fast_gather,</span>
<span class="line" id="L1746"> .fast_scalar_fsqrt,</span>
<span class="line" id="L1747"> .fast_shld_rotate,</span>
<span class="line" id="L1748"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L1749"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L1750"> .fast_vector_fsqrt,</span>
<span class="line" id="L1751"> .fsgsbase,</span>
<span class="line" id="L1752"> .fxsr,</span>
<span class="line" id="L1753"> .idivq_to_divl,</span>
<span class="line" id="L1754"> .invpcid,</span>
<span class="line" id="L1755"> .lzcnt,</span>
<span class="line" id="L1756"> .macrofusion,</span>
<span class="line" id="L1757"> .mmx,</span>
<span class="line" id="L1758"> .movbe,</span>
<span class="line" id="L1759"> .nopl,</span>
<span class="line" id="L1760"> .pclmul,</span>
<span class="line" id="L1761"> .pku,</span>
<span class="line" id="L1762"> .popcnt,</span>
<span class="line" id="L1763"> .prefer_256_bit,</span>
<span class="line" id="L1764"> .prfchw,</span>
<span class="line" id="L1765"> .rdrnd,</span>
<span class="line" id="L1766"> .rdseed,</span>
<span class="line" id="L1767"> .sahf,</span>
<span class="line" id="L1768"> .slow_3ops_lea,</span>
<span class="line" id="L1769"> .vzeroupper,</span>
<span class="line" id="L1770"> .x87,</span>
<span class="line" id="L1771"> .xsavec,</span>
<span class="line" id="L1772"> .xsaveopt,</span>
<span class="line" id="L1773"> .xsaves,</span>
<span class="line" id="L1774"> }),</span>
<span class="line" id="L1775"> };</span>
<span class="line" id="L1776"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> cooperlake = CpuModel{</span>
<span class="line" id="L1777"> .name = <span class="tok-str">"cooperlake"</span>,</span>
<span class="line" id="L1778"> .llvm_name = <span class="tok-str">"cooperlake"</span>,</span>
<span class="line" id="L1779"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1780"> .@"64bit",</span>
<span class="line" id="L1781"> .adx,</span>
<span class="line" id="L1782"> .aes,</span>
<span class="line" id="L1783"> .allow_light_256_bit,</span>
<span class="line" id="L1784"> .avx512bf16,</span>
<span class="line" id="L1785"> .avx512cd,</span>
<span class="line" id="L1786"> .avx512dq,</span>
<span class="line" id="L1787"> .avx512vl,</span>
<span class="line" id="L1788"> .avx512vnni,</span>
<span class="line" id="L1789"> .bmi,</span>
<span class="line" id="L1790"> .bmi2,</span>
<span class="line" id="L1791"> .clflushopt,</span>
<span class="line" id="L1792"> .clwb,</span>
<span class="line" id="L1793"> .cmov,</span>
<span class="line" id="L1794"> .crc32,</span>
<span class="line" id="L1795"> .cx16,</span>
<span class="line" id="L1796"> .ermsb,</span>
<span class="line" id="L1797"> .false_deps_popcnt,</span>
<span class="line" id="L1798"> .fast_15bytenop,</span>
<span class="line" id="L1799"> .fast_gather,</span>
<span class="line" id="L1800"> .fast_scalar_fsqrt,</span>
<span class="line" id="L1801"> .fast_shld_rotate,</span>
<span class="line" id="L1802"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L1803"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L1804"> .fast_vector_fsqrt,</span>
<span class="line" id="L1805"> .fsgsbase,</span>
<span class="line" id="L1806"> .fxsr,</span>
<span class="line" id="L1807"> .idivq_to_divl,</span>
<span class="line" id="L1808"> .invpcid,</span>
<span class="line" id="L1809"> .lzcnt,</span>
<span class="line" id="L1810"> .macrofusion,</span>
<span class="line" id="L1811"> .mmx,</span>
<span class="line" id="L1812"> .movbe,</span>
<span class="line" id="L1813"> .nopl,</span>
<span class="line" id="L1814"> .pclmul,</span>
<span class="line" id="L1815"> .pku,</span>
<span class="line" id="L1816"> .popcnt,</span>
<span class="line" id="L1817"> .prefer_256_bit,</span>
<span class="line" id="L1818"> .prfchw,</span>
<span class="line" id="L1819"> .rdrnd,</span>
<span class="line" id="L1820"> .rdseed,</span>
<span class="line" id="L1821"> .sahf,</span>
<span class="line" id="L1822"> .slow_3ops_lea,</span>
<span class="line" id="L1823"> .vzeroupper,</span>
<span class="line" id="L1824"> .x87,</span>
<span class="line" id="L1825"> .xsavec,</span>
<span class="line" id="L1826"> .xsaveopt,</span>
<span class="line" id="L1827"> .xsaves,</span>
<span class="line" id="L1828"> }),</span>
<span class="line" id="L1829"> };</span>
<span class="line" id="L1830"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> core2 = CpuModel{</span>
<span class="line" id="L1831"> .name = <span class="tok-str">"core2"</span>,</span>
<span class="line" id="L1832"> .llvm_name = <span class="tok-str">"core2"</span>,</span>
<span class="line" id="L1833"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1834"> .@"64bit",</span>
<span class="line" id="L1835"> .cmov,</span>
<span class="line" id="L1836"> .cx16,</span>
<span class="line" id="L1837"> .fxsr,</span>
<span class="line" id="L1838"> .macrofusion,</span>
<span class="line" id="L1839"> .mmx,</span>
<span class="line" id="L1840"> .nopl,</span>
<span class="line" id="L1841"> .sahf,</span>
<span class="line" id="L1842"> .slow_unaligned_mem_16,</span>
<span class="line" id="L1843"> .ssse3,</span>
<span class="line" id="L1844"> .vzeroupper,</span>
<span class="line" id="L1845"> .x87,</span>
<span class="line" id="L1846"> }),</span>
<span class="line" id="L1847"> };</span>
<span class="line" id="L1848"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> core_avx2 = CpuModel{</span>
<span class="line" id="L1849"> .name = <span class="tok-str">"core_avx2"</span>,</span>
<span class="line" id="L1850"> .llvm_name = <span class="tok-str">"core-avx2"</span>,</span>
<span class="line" id="L1851"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1852"> .@"64bit",</span>
<span class="line" id="L1853"> .allow_light_256_bit,</span>
<span class="line" id="L1854"> .avx2,</span>
<span class="line" id="L1855"> .bmi,</span>
<span class="line" id="L1856"> .bmi2,</span>
<span class="line" id="L1857"> .cmov,</span>
<span class="line" id="L1858"> .crc32,</span>
<span class="line" id="L1859"> .cx16,</span>
<span class="line" id="L1860"> .ermsb,</span>
<span class="line" id="L1861"> .f16c,</span>
<span class="line" id="L1862"> .false_deps_lzcnt_tzcnt,</span>
<span class="line" id="L1863"> .false_deps_popcnt,</span>
<span class="line" id="L1864"> .fast_15bytenop,</span>
<span class="line" id="L1865"> .fast_scalar_fsqrt,</span>
<span class="line" id="L1866"> .fast_shld_rotate,</span>
<span class="line" id="L1867"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L1868"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L1869"> .fma,</span>
<span class="line" id="L1870"> .fsgsbase,</span>
<span class="line" id="L1871"> .fxsr,</span>
<span class="line" id="L1872"> .idivq_to_divl,</span>
<span class="line" id="L1873"> .invpcid,</span>
<span class="line" id="L1874"> .lzcnt,</span>
<span class="line" id="L1875"> .macrofusion,</span>
<span class="line" id="L1876"> .mmx,</span>
<span class="line" id="L1877"> .movbe,</span>
<span class="line" id="L1878"> .nopl,</span>
<span class="line" id="L1879"> .pclmul,</span>
<span class="line" id="L1880"> .popcnt,</span>
<span class="line" id="L1881"> .rdrnd,</span>
<span class="line" id="L1882"> .sahf,</span>
<span class="line" id="L1883"> .slow_3ops_lea,</span>
<span class="line" id="L1884"> .vzeroupper,</span>
<span class="line" id="L1885"> .x87,</span>
<span class="line" id="L1886"> .xsaveopt,</span>
<span class="line" id="L1887"> }),</span>
<span class="line" id="L1888"> };</span>
<span class="line" id="L1889"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> core_avx_i = CpuModel{</span>
<span class="line" id="L1890"> .name = <span class="tok-str">"core_avx_i"</span>,</span>
<span class="line" id="L1891"> .llvm_name = <span class="tok-str">"core-avx-i"</span>,</span>
<span class="line" id="L1892"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1893"> .@"64bit",</span>
<span class="line" id="L1894"> .cmov,</span>
<span class="line" id="L1895"> .crc32,</span>
<span class="line" id="L1896"> .cx16,</span>
<span class="line" id="L1897"> .f16c,</span>
<span class="line" id="L1898"> .false_deps_popcnt,</span>
<span class="line" id="L1899"> .fast_15bytenop,</span>
<span class="line" id="L1900"> .fast_scalar_fsqrt,</span>
<span class="line" id="L1901"> .fast_shld_rotate,</span>
<span class="line" id="L1902"> .fsgsbase,</span>
<span class="line" id="L1903"> .fxsr,</span>
<span class="line" id="L1904"> .idivq_to_divl,</span>
<span class="line" id="L1905"> .macrofusion,</span>
<span class="line" id="L1906"> .mmx,</span>
<span class="line" id="L1907"> .nopl,</span>
<span class="line" id="L1908"> .pclmul,</span>
<span class="line" id="L1909"> .popcnt,</span>
<span class="line" id="L1910"> .rdrnd,</span>
<span class="line" id="L1911"> .sahf,</span>
<span class="line" id="L1912"> .slow_3ops_lea,</span>
<span class="line" id="L1913"> .slow_unaligned_mem_32,</span>
<span class="line" id="L1914"> .vzeroupper,</span>
<span class="line" id="L1915"> .x87,</span>
<span class="line" id="L1916"> .xsaveopt,</span>
<span class="line" id="L1917"> }),</span>
<span class="line" id="L1918"> };</span>
<span class="line" id="L1919"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> corei7 = CpuModel{</span>
<span class="line" id="L1920"> .name = <span class="tok-str">"corei7"</span>,</span>
<span class="line" id="L1921"> .llvm_name = <span class="tok-str">"corei7"</span>,</span>
<span class="line" id="L1922"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1923"> .@"64bit",</span>
<span class="line" id="L1924"> .cmov,</span>
<span class="line" id="L1925"> .crc32,</span>
<span class="line" id="L1926"> .cx16,</span>
<span class="line" id="L1927"> .fxsr,</span>
<span class="line" id="L1928"> .macrofusion,</span>
<span class="line" id="L1929"> .mmx,</span>
<span class="line" id="L1930"> .nopl,</span>
<span class="line" id="L1931"> .popcnt,</span>
<span class="line" id="L1932"> .sahf,</span>
<span class="line" id="L1933"> .sse4_2,</span>
<span class="line" id="L1934"> .vzeroupper,</span>
<span class="line" id="L1935"> .x87,</span>
<span class="line" id="L1936"> }),</span>
<span class="line" id="L1937"> };</span>
<span class="line" id="L1938"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> corei7_avx = CpuModel{</span>
<span class="line" id="L1939"> .name = <span class="tok-str">"corei7_avx"</span>,</span>
<span class="line" id="L1940"> .llvm_name = <span class="tok-str">"corei7-avx"</span>,</span>
<span class="line" id="L1941"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1942"> .@"64bit",</span>
<span class="line" id="L1943"> .avx,</span>
<span class="line" id="L1944"> .cmov,</span>
<span class="line" id="L1945"> .crc32,</span>
<span class="line" id="L1946"> .cx16,</span>
<span class="line" id="L1947"> .false_deps_popcnt,</span>
<span class="line" id="L1948"> .fast_15bytenop,</span>
<span class="line" id="L1949"> .fast_scalar_fsqrt,</span>
<span class="line" id="L1950"> .fast_shld_rotate,</span>
<span class="line" id="L1951"> .fxsr,</span>
<span class="line" id="L1952"> .idivq_to_divl,</span>
<span class="line" id="L1953"> .macrofusion,</span>
<span class="line" id="L1954"> .mmx,</span>
<span class="line" id="L1955"> .nopl,</span>
<span class="line" id="L1956"> .pclmul,</span>
<span class="line" id="L1957"> .popcnt,</span>
<span class="line" id="L1958"> .sahf,</span>
<span class="line" id="L1959"> .slow_3ops_lea,</span>
<span class="line" id="L1960"> .slow_unaligned_mem_32,</span>
<span class="line" id="L1961"> .vzeroupper,</span>
<span class="line" id="L1962"> .x87,</span>
<span class="line" id="L1963"> .xsaveopt,</span>
<span class="line" id="L1964"> }),</span>
<span class="line" id="L1965"> };</span>
<span class="line" id="L1966"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> emeraldrapids = CpuModel{</span>
<span class="line" id="L1967"> .name = <span class="tok-str">"emeraldrapids"</span>,</span>
<span class="line" id="L1968"> .llvm_name = <span class="tok-str">"emeraldrapids"</span>,</span>
<span class="line" id="L1969"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L1970"> .@"64bit",</span>
<span class="line" id="L1971"> .adx,</span>
<span class="line" id="L1972"> .allow_light_256_bit,</span>
<span class="line" id="L1973"> .amx_bf16,</span>
<span class="line" id="L1974"> .amx_int8,</span>
<span class="line" id="L1975"> .avx512bf16,</span>
<span class="line" id="L1976"> .avx512bitalg,</span>
<span class="line" id="L1977"> .avx512cd,</span>
<span class="line" id="L1978"> .avx512fp16,</span>
<span class="line" id="L1979"> .avx512ifma,</span>
<span class="line" id="L1980"> .avx512vbmi,</span>
<span class="line" id="L1981"> .avx512vbmi2,</span>
<span class="line" id="L1982"> .avx512vnni,</span>
<span class="line" id="L1983"> .avx512vpopcntdq,</span>
<span class="line" id="L1984"> .avxvnni,</span>
<span class="line" id="L1985"> .bmi,</span>
<span class="line" id="L1986"> .bmi2,</span>
<span class="line" id="L1987"> .cldemote,</span>
<span class="line" id="L1988"> .clflushopt,</span>
<span class="line" id="L1989"> .clwb,</span>
<span class="line" id="L1990"> .cmov,</span>
<span class="line" id="L1991"> .crc32,</span>
<span class="line" id="L1992"> .cx16,</span>
<span class="line" id="L1993"> .enqcmd,</span>
<span class="line" id="L1994"> .ermsb,</span>
<span class="line" id="L1995"> .false_deps_getmant,</span>
<span class="line" id="L1996"> .false_deps_mulc,</span>
<span class="line" id="L1997"> .false_deps_mullq,</span>
<span class="line" id="L1998"> .false_deps_perm,</span>
<span class="line" id="L1999"> .false_deps_range,</span>
<span class="line" id="L2000"> .fast_15bytenop,</span>
<span class="line" id="L2001"> .fast_gather,</span>
<span class="line" id="L2002"> .fast_scalar_fsqrt,</span>
<span class="line" id="L2003"> .fast_shld_rotate,</span>
<span class="line" id="L2004"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L2005"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L2006"> .fast_vector_fsqrt,</span>
<span class="line" id="L2007"> .fsgsbase,</span>
<span class="line" id="L2008"> .fsrm,</span>
<span class="line" id="L2009"> .fxsr,</span>
<span class="line" id="L2010"> .gfni,</span>
<span class="line" id="L2011"> .idivq_to_divl,</span>
<span class="line" id="L2012"> .invpcid,</span>
<span class="line" id="L2013"> .lzcnt,</span>
<span class="line" id="L2014"> .macrofusion,</span>
<span class="line" id="L2015"> .mmx,</span>
<span class="line" id="L2016"> .movbe,</span>
<span class="line" id="L2017"> .movdir64b,</span>
<span class="line" id="L2018"> .movdiri,</span>
<span class="line" id="L2019"> .nopl,</span>
<span class="line" id="L2020"> .pconfig,</span>
<span class="line" id="L2021"> .pku,</span>
<span class="line" id="L2022"> .popcnt,</span>
<span class="line" id="L2023"> .prefer_256_bit,</span>
<span class="line" id="L2024"> .prfchw,</span>
<span class="line" id="L2025"> .ptwrite,</span>
<span class="line" id="L2026"> .rdpid,</span>
<span class="line" id="L2027"> .rdrnd,</span>
<span class="line" id="L2028"> .rdseed,</span>
<span class="line" id="L2029"> .sahf,</span>
<span class="line" id="L2030"> .serialize,</span>
<span class="line" id="L2031"> .sha,</span>
<span class="line" id="L2032"> .shstk,</span>
<span class="line" id="L2033"> .tsxldtrk,</span>
<span class="line" id="L2034"> .uintr,</span>
<span class="line" id="L2035"> .vaes,</span>
<span class="line" id="L2036"> .vpclmulqdq,</span>
<span class="line" id="L2037"> .vzeroupper,</span>
<span class="line" id="L2038"> .waitpkg,</span>
<span class="line" id="L2039"> .wbnoinvd,</span>
<span class="line" id="L2040"> .x87,</span>
<span class="line" id="L2041"> .xsavec,</span>
<span class="line" id="L2042"> .xsaveopt,</span>
<span class="line" id="L2043"> .xsaves,</span>
<span class="line" id="L2044"> }),</span>
<span class="line" id="L2045"> };</span>
<span class="line" id="L2046"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> generic = CpuModel{</span>
<span class="line" id="L2047"> .name = <span class="tok-str">"generic"</span>,</span>
<span class="line" id="L2048"> .llvm_name = <span class="tok-str">"generic"</span>,</span>
<span class="line" id="L2049"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2050"> .@"64bit",</span>
<span class="line" id="L2051"> .cx8,</span>
<span class="line" id="L2052"> .fast_15bytenop,</span>
<span class="line" id="L2053"> .fast_scalar_fsqrt,</span>
<span class="line" id="L2054"> .idivq_to_divl,</span>
<span class="line" id="L2055"> .macrofusion,</span>
<span class="line" id="L2056"> .slow_3ops_lea,</span>
<span class="line" id="L2057"> .vzeroupper,</span>
<span class="line" id="L2058"> .x87,</span>
<span class="line" id="L2059"> }),</span>
<span class="line" id="L2060"> };</span>
<span class="line" id="L2061"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> geode = CpuModel{</span>
<span class="line" id="L2062"> .name = <span class="tok-str">"geode"</span>,</span>
<span class="line" id="L2063"> .llvm_name = <span class="tok-str">"geode"</span>,</span>
<span class="line" id="L2064"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2065"> .@"3dnowa",</span>
<span class="line" id="L2066"> .cx8,</span>
<span class="line" id="L2067"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2068"> .vzeroupper,</span>
<span class="line" id="L2069"> .x87,</span>
<span class="line" id="L2070"> }),</span>
<span class="line" id="L2071"> };</span>
<span class="line" id="L2072"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> goldmont = CpuModel{</span>
<span class="line" id="L2073"> .name = <span class="tok-str">"goldmont"</span>,</span>
<span class="line" id="L2074"> .llvm_name = <span class="tok-str">"goldmont"</span>,</span>
<span class="line" id="L2075"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2076"> .@"64bit",</span>
<span class="line" id="L2077"> .aes,</span>
<span class="line" id="L2078"> .clflushopt,</span>
<span class="line" id="L2079"> .cmov,</span>
<span class="line" id="L2080"> .crc32,</span>
<span class="line" id="L2081"> .cx16,</span>
<span class="line" id="L2082"> .false_deps_popcnt,</span>
<span class="line" id="L2083"> .fast_movbe,</span>
<span class="line" id="L2084"> .fsgsbase,</span>
<span class="line" id="L2085"> .fxsr,</span>
<span class="line" id="L2086"> .mmx,</span>
<span class="line" id="L2087"> .movbe,</span>
<span class="line" id="L2088"> .nopl,</span>
<span class="line" id="L2089"> .pclmul,</span>
<span class="line" id="L2090"> .popcnt,</span>
<span class="line" id="L2091"> .prfchw,</span>
<span class="line" id="L2092"> .rdrnd,</span>
<span class="line" id="L2093"> .rdseed,</span>
<span class="line" id="L2094"> .sahf,</span>
<span class="line" id="L2095"> .sha,</span>
<span class="line" id="L2096"> .slow_incdec,</span>
<span class="line" id="L2097"> .slow_lea,</span>
<span class="line" id="L2098"> .slow_two_mem_ops,</span>
<span class="line" id="L2099"> .sse4_2,</span>
<span class="line" id="L2100"> .use_glm_div_sqrt_costs,</span>
<span class="line" id="L2101"> .vzeroupper,</span>
<span class="line" id="L2102"> .x87,</span>
<span class="line" id="L2103"> .xsavec,</span>
<span class="line" id="L2104"> .xsaveopt,</span>
<span class="line" id="L2105"> .xsaves,</span>
<span class="line" id="L2106"> }),</span>
<span class="line" id="L2107"> };</span>
<span class="line" id="L2108"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> goldmont_plus = CpuModel{</span>
<span class="line" id="L2109"> .name = <span class="tok-str">"goldmont_plus"</span>,</span>
<span class="line" id="L2110"> .llvm_name = <span class="tok-str">"goldmont-plus"</span>,</span>
<span class="line" id="L2111"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2112"> .@"64bit",</span>
<span class="line" id="L2113"> .aes,</span>
<span class="line" id="L2114"> .clflushopt,</span>
<span class="line" id="L2115"> .cmov,</span>
<span class="line" id="L2116"> .crc32,</span>
<span class="line" id="L2117"> .cx16,</span>
<span class="line" id="L2118"> .fast_movbe,</span>
<span class="line" id="L2119"> .fsgsbase,</span>
<span class="line" id="L2120"> .fxsr,</span>
<span class="line" id="L2121"> .mmx,</span>
<span class="line" id="L2122"> .movbe,</span>
<span class="line" id="L2123"> .nopl,</span>
<span class="line" id="L2124"> .pclmul,</span>
<span class="line" id="L2125"> .popcnt,</span>
<span class="line" id="L2126"> .prfchw,</span>
<span class="line" id="L2127"> .ptwrite,</span>
<span class="line" id="L2128"> .rdpid,</span>
<span class="line" id="L2129"> .rdrnd,</span>
<span class="line" id="L2130"> .rdseed,</span>
<span class="line" id="L2131"> .sahf,</span>
<span class="line" id="L2132"> .sha,</span>
<span class="line" id="L2133"> .slow_incdec,</span>
<span class="line" id="L2134"> .slow_lea,</span>
<span class="line" id="L2135"> .slow_two_mem_ops,</span>
<span class="line" id="L2136"> .sse4_2,</span>
<span class="line" id="L2137"> .use_glm_div_sqrt_costs,</span>
<span class="line" id="L2138"> .vzeroupper,</span>
<span class="line" id="L2139"> .x87,</span>
<span class="line" id="L2140"> .xsavec,</span>
<span class="line" id="L2141"> .xsaveopt,</span>
<span class="line" id="L2142"> .xsaves,</span>
<span class="line" id="L2143"> }),</span>
<span class="line" id="L2144"> };</span>
<span class="line" id="L2145"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> grandridge = CpuModel{</span>
<span class="line" id="L2146"> .name = <span class="tok-str">"grandridge"</span>,</span>
<span class="line" id="L2147"> .llvm_name = <span class="tok-str">"grandridge"</span>,</span>
<span class="line" id="L2148"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2149"> .@"64bit",</span>
<span class="line" id="L2150"> .adx,</span>
<span class="line" id="L2151"> .avxifma,</span>
<span class="line" id="L2152"> .avxneconvert,</span>
<span class="line" id="L2153"> .avxvnni,</span>
<span class="line" id="L2154"> .avxvnniint8,</span>
<span class="line" id="L2155"> .bmi,</span>
<span class="line" id="L2156"> .bmi2,</span>
<span class="line" id="L2157"> .cldemote,</span>
<span class="line" id="L2158"> .clflushopt,</span>
<span class="line" id="L2159"> .clwb,</span>
<span class="line" id="L2160"> .cmov,</span>
<span class="line" id="L2161"> .cmpccxadd,</span>
<span class="line" id="L2162"> .crc32,</span>
<span class="line" id="L2163"> .cx16,</span>
<span class="line" id="L2164"> .f16c,</span>
<span class="line" id="L2165"> .fast_movbe,</span>
<span class="line" id="L2166"> .fma,</span>
<span class="line" id="L2167"> .fsgsbase,</span>
<span class="line" id="L2168"> .fxsr,</span>
<span class="line" id="L2169"> .gfni,</span>
<span class="line" id="L2170"> .hreset,</span>
<span class="line" id="L2171"> .invpcid,</span>
<span class="line" id="L2172"> .lzcnt,</span>
<span class="line" id="L2173"> .mmx,</span>
<span class="line" id="L2174"> .movbe,</span>
<span class="line" id="L2175"> .movdir64b,</span>
<span class="line" id="L2176"> .movdiri,</span>
<span class="line" id="L2177"> .nopl,</span>
<span class="line" id="L2178"> .pconfig,</span>
<span class="line" id="L2179"> .pku,</span>
<span class="line" id="L2180"> .popcnt,</span>
<span class="line" id="L2181"> .prfchw,</span>
<span class="line" id="L2182"> .ptwrite,</span>
<span class="line" id="L2183"> .raoint,</span>
<span class="line" id="L2184"> .rdpid,</span>
<span class="line" id="L2185"> .rdrnd,</span>
<span class="line" id="L2186"> .rdseed,</span>
<span class="line" id="L2187"> .sahf,</span>
<span class="line" id="L2188"> .serialize,</span>
<span class="line" id="L2189"> .sha,</span>
<span class="line" id="L2190"> .shstk,</span>
<span class="line" id="L2191"> .slow_incdec,</span>
<span class="line" id="L2192"> .slow_lea,</span>
<span class="line" id="L2193"> .slow_two_mem_ops,</span>
<span class="line" id="L2194"> .use_glm_div_sqrt_costs,</span>
<span class="line" id="L2195"> .vaes,</span>
<span class="line" id="L2196"> .vpclmulqdq,</span>
<span class="line" id="L2197"> .vzeroupper,</span>
<span class="line" id="L2198"> .waitpkg,</span>
<span class="line" id="L2199"> .widekl,</span>
<span class="line" id="L2200"> .x87,</span>
<span class="line" id="L2201"> .xsavec,</span>
<span class="line" id="L2202"> .xsaveopt,</span>
<span class="line" id="L2203"> .xsaves,</span>
<span class="line" id="L2204"> }),</span>
<span class="line" id="L2205"> };</span>
<span class="line" id="L2206"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> graniterapids = CpuModel{</span>
<span class="line" id="L2207"> .name = <span class="tok-str">"graniterapids"</span>,</span>
<span class="line" id="L2208"> .llvm_name = <span class="tok-str">"graniterapids"</span>,</span>
<span class="line" id="L2209"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2210"> .@"64bit",</span>
<span class="line" id="L2211"> .adx,</span>
<span class="line" id="L2212"> .allow_light_256_bit,</span>
<span class="line" id="L2213"> .amx_bf16,</span>
<span class="line" id="L2214"> .amx_fp16,</span>
<span class="line" id="L2215"> .amx_int8,</span>
<span class="line" id="L2216"> .avx512bf16,</span>
<span class="line" id="L2217"> .avx512bitalg,</span>
<span class="line" id="L2218"> .avx512cd,</span>
<span class="line" id="L2219"> .avx512fp16,</span>
<span class="line" id="L2220"> .avx512ifma,</span>
<span class="line" id="L2221"> .avx512vbmi,</span>
<span class="line" id="L2222"> .avx512vbmi2,</span>
<span class="line" id="L2223"> .avx512vnni,</span>
<span class="line" id="L2224"> .avx512vpopcntdq,</span>
<span class="line" id="L2225"> .avxvnni,</span>
<span class="line" id="L2226"> .bmi,</span>
<span class="line" id="L2227"> .bmi2,</span>
<span class="line" id="L2228"> .cldemote,</span>
<span class="line" id="L2229"> .clflushopt,</span>
<span class="line" id="L2230"> .clwb,</span>
<span class="line" id="L2231"> .cmov,</span>
<span class="line" id="L2232"> .crc32,</span>
<span class="line" id="L2233"> .cx16,</span>
<span class="line" id="L2234"> .enqcmd,</span>
<span class="line" id="L2235"> .ermsb,</span>
<span class="line" id="L2236"> .false_deps_getmant,</span>
<span class="line" id="L2237"> .false_deps_mulc,</span>
<span class="line" id="L2238"> .false_deps_mullq,</span>
<span class="line" id="L2239"> .false_deps_perm,</span>
<span class="line" id="L2240"> .false_deps_range,</span>
<span class="line" id="L2241"> .fast_15bytenop,</span>
<span class="line" id="L2242"> .fast_gather,</span>
<span class="line" id="L2243"> .fast_scalar_fsqrt,</span>
<span class="line" id="L2244"> .fast_shld_rotate,</span>
<span class="line" id="L2245"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L2246"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L2247"> .fast_vector_fsqrt,</span>
<span class="line" id="L2248"> .fsgsbase,</span>
<span class="line" id="L2249"> .fsrm,</span>
<span class="line" id="L2250"> .fxsr,</span>
<span class="line" id="L2251"> .gfni,</span>
<span class="line" id="L2252"> .idivq_to_divl,</span>
<span class="line" id="L2253"> .invpcid,</span>
<span class="line" id="L2254"> .lzcnt,</span>
<span class="line" id="L2255"> .macrofusion,</span>
<span class="line" id="L2256"> .mmx,</span>
<span class="line" id="L2257"> .movbe,</span>
<span class="line" id="L2258"> .movdir64b,</span>
<span class="line" id="L2259"> .movdiri,</span>
<span class="line" id="L2260"> .nopl,</span>
<span class="line" id="L2261"> .pconfig,</span>
<span class="line" id="L2262"> .pku,</span>
<span class="line" id="L2263"> .popcnt,</span>
<span class="line" id="L2264"> .prefer_256_bit,</span>
<span class="line" id="L2265"> .prefetchi,</span>
<span class="line" id="L2266"> .prfchw,</span>
<span class="line" id="L2267"> .ptwrite,</span>
<span class="line" id="L2268"> .rdpid,</span>
<span class="line" id="L2269"> .rdrnd,</span>
<span class="line" id="L2270"> .rdseed,</span>
<span class="line" id="L2271"> .sahf,</span>
<span class="line" id="L2272"> .serialize,</span>
<span class="line" id="L2273"> .sha,</span>
<span class="line" id="L2274"> .shstk,</span>
<span class="line" id="L2275"> .tsxldtrk,</span>
<span class="line" id="L2276"> .uintr,</span>
<span class="line" id="L2277"> .vaes,</span>
<span class="line" id="L2278"> .vpclmulqdq,</span>
<span class="line" id="L2279"> .vzeroupper,</span>
<span class="line" id="L2280"> .waitpkg,</span>
<span class="line" id="L2281"> .wbnoinvd,</span>
<span class="line" id="L2282"> .x87,</span>
<span class="line" id="L2283"> .xsavec,</span>
<span class="line" id="L2284"> .xsaveopt,</span>
<span class="line" id="L2285"> .xsaves,</span>
<span class="line" id="L2286"> }),</span>
<span class="line" id="L2287"> };</span>
<span class="line" id="L2288"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> haswell = CpuModel{</span>
<span class="line" id="L2289"> .name = <span class="tok-str">"haswell"</span>,</span>
<span class="line" id="L2290"> .llvm_name = <span class="tok-str">"haswell"</span>,</span>
<span class="line" id="L2291"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2292"> .@"64bit",</span>
<span class="line" id="L2293"> .allow_light_256_bit,</span>
<span class="line" id="L2294"> .avx2,</span>
<span class="line" id="L2295"> .bmi,</span>
<span class="line" id="L2296"> .bmi2,</span>
<span class="line" id="L2297"> .cmov,</span>
<span class="line" id="L2298"> .crc32,</span>
<span class="line" id="L2299"> .cx16,</span>
<span class="line" id="L2300"> .ermsb,</span>
<span class="line" id="L2301"> .f16c,</span>
<span class="line" id="L2302"> .false_deps_lzcnt_tzcnt,</span>
<span class="line" id="L2303"> .false_deps_popcnt,</span>
<span class="line" id="L2304"> .fast_15bytenop,</span>
<span class="line" id="L2305"> .fast_scalar_fsqrt,</span>
<span class="line" id="L2306"> .fast_shld_rotate,</span>
<span class="line" id="L2307"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L2308"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L2309"> .fma,</span>
<span class="line" id="L2310"> .fsgsbase,</span>
<span class="line" id="L2311"> .fxsr,</span>
<span class="line" id="L2312"> .idivq_to_divl,</span>
<span class="line" id="L2313"> .invpcid,</span>
<span class="line" id="L2314"> .lzcnt,</span>
<span class="line" id="L2315"> .macrofusion,</span>
<span class="line" id="L2316"> .mmx,</span>
<span class="line" id="L2317"> .movbe,</span>
<span class="line" id="L2318"> .nopl,</span>
<span class="line" id="L2319"> .pclmul,</span>
<span class="line" id="L2320"> .popcnt,</span>
<span class="line" id="L2321"> .rdrnd,</span>
<span class="line" id="L2322"> .sahf,</span>
<span class="line" id="L2323"> .slow_3ops_lea,</span>
<span class="line" id="L2324"> .vzeroupper,</span>
<span class="line" id="L2325"> .x87,</span>
<span class="line" id="L2326"> .xsaveopt,</span>
<span class="line" id="L2327"> }),</span>
<span class="line" id="L2328"> };</span>
<span class="line" id="L2329"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> @"i386" = CpuModel{</span>
<span class="line" id="L2330"> .name = <span class="tok-str">"i386"</span>,</span>
<span class="line" id="L2331"> .llvm_name = <span class="tok-str">"i386"</span>,</span>
<span class="line" id="L2332"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2333"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2334"> .vzeroupper,</span>
<span class="line" id="L2335"> .x87,</span>
<span class="line" id="L2336"> }),</span>
<span class="line" id="L2337"> };</span>
<span class="line" id="L2338"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> @"i486" = CpuModel{</span>
<span class="line" id="L2339"> .name = <span class="tok-str">"i486"</span>,</span>
<span class="line" id="L2340"> .llvm_name = <span class="tok-str">"i486"</span>,</span>
<span class="line" id="L2341"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2342"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2343"> .vzeroupper,</span>
<span class="line" id="L2344"> .x87,</span>
<span class="line" id="L2345"> }),</span>
<span class="line" id="L2346"> };</span>
<span class="line" id="L2347"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> @"i586" = CpuModel{</span>
<span class="line" id="L2348"> .name = <span class="tok-str">"i586"</span>,</span>
<span class="line" id="L2349"> .llvm_name = <span class="tok-str">"i586"</span>,</span>
<span class="line" id="L2350"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2351"> .cx8,</span>
<span class="line" id="L2352"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2353"> .vzeroupper,</span>
<span class="line" id="L2354"> .x87,</span>
<span class="line" id="L2355"> }),</span>
<span class="line" id="L2356"> };</span>
<span class="line" id="L2357"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> @"i686" = CpuModel{</span>
<span class="line" id="L2358"> .name = <span class="tok-str">"i686"</span>,</span>
<span class="line" id="L2359"> .llvm_name = <span class="tok-str">"i686"</span>,</span>
<span class="line" id="L2360"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2361"> .cmov,</span>
<span class="line" id="L2362"> .cx8,</span>
<span class="line" id="L2363"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2364"> .vzeroupper,</span>
<span class="line" id="L2365"> .x87,</span>
<span class="line" id="L2366"> }),</span>
<span class="line" id="L2367"> };</span>
<span class="line" id="L2368"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> icelake_client = CpuModel{</span>
<span class="line" id="L2369"> .name = <span class="tok-str">"icelake_client"</span>,</span>
<span class="line" id="L2370"> .llvm_name = <span class="tok-str">"icelake-client"</span>,</span>
<span class="line" id="L2371"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2372"> .@"64bit",</span>
<span class="line" id="L2373"> .adx,</span>
<span class="line" id="L2374"> .allow_light_256_bit,</span>
<span class="line" id="L2375"> .avx512bitalg,</span>
<span class="line" id="L2376"> .avx512cd,</span>
<span class="line" id="L2377"> .avx512dq,</span>
<span class="line" id="L2378"> .avx512ifma,</span>
<span class="line" id="L2379"> .avx512vbmi,</span>
<span class="line" id="L2380"> .avx512vbmi2,</span>
<span class="line" id="L2381"> .avx512vl,</span>
<span class="line" id="L2382"> .avx512vnni,</span>
<span class="line" id="L2383"> .avx512vpopcntdq,</span>
<span class="line" id="L2384"> .bmi,</span>
<span class="line" id="L2385"> .bmi2,</span>
<span class="line" id="L2386"> .clflushopt,</span>
<span class="line" id="L2387"> .cmov,</span>
<span class="line" id="L2388"> .crc32,</span>
<span class="line" id="L2389"> .cx16,</span>
<span class="line" id="L2390"> .ermsb,</span>
<span class="line" id="L2391"> .fast_15bytenop,</span>
<span class="line" id="L2392"> .fast_gather,</span>
<span class="line" id="L2393"> .fast_scalar_fsqrt,</span>
<span class="line" id="L2394"> .fast_shld_rotate,</span>
<span class="line" id="L2395"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L2396"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L2397"> .fast_vector_fsqrt,</span>
<span class="line" id="L2398"> .fsgsbase,</span>
<span class="line" id="L2399"> .fsrm,</span>
<span class="line" id="L2400"> .fxsr,</span>
<span class="line" id="L2401"> .gfni,</span>
<span class="line" id="L2402"> .idivq_to_divl,</span>
<span class="line" id="L2403"> .invpcid,</span>
<span class="line" id="L2404"> .lzcnt,</span>
<span class="line" id="L2405"> .macrofusion,</span>
<span class="line" id="L2406"> .mmx,</span>
<span class="line" id="L2407"> .movbe,</span>
<span class="line" id="L2408"> .nopl,</span>
<span class="line" id="L2409"> .pku,</span>
<span class="line" id="L2410"> .popcnt,</span>
<span class="line" id="L2411"> .prefer_256_bit,</span>
<span class="line" id="L2412"> .prfchw,</span>
<span class="line" id="L2413"> .rdpid,</span>
<span class="line" id="L2414"> .rdrnd,</span>
<span class="line" id="L2415"> .rdseed,</span>
<span class="line" id="L2416"> .sahf,</span>
<span class="line" id="L2417"> .sha,</span>
<span class="line" id="L2418"> .vaes,</span>
<span class="line" id="L2419"> .vpclmulqdq,</span>
<span class="line" id="L2420"> .vzeroupper,</span>
<span class="line" id="L2421"> .x87,</span>
<span class="line" id="L2422"> .xsavec,</span>
<span class="line" id="L2423"> .xsaveopt,</span>
<span class="line" id="L2424"> .xsaves,</span>
<span class="line" id="L2425"> }),</span>
<span class="line" id="L2426"> };</span>
<span class="line" id="L2427"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> icelake_server = CpuModel{</span>
<span class="line" id="L2428"> .name = <span class="tok-str">"icelake_server"</span>,</span>
<span class="line" id="L2429"> .llvm_name = <span class="tok-str">"icelake-server"</span>,</span>
<span class="line" id="L2430"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2431"> .@"64bit",</span>
<span class="line" id="L2432"> .adx,</span>
<span class="line" id="L2433"> .allow_light_256_bit,</span>
<span class="line" id="L2434"> .avx512bitalg,</span>
<span class="line" id="L2435"> .avx512cd,</span>
<span class="line" id="L2436"> .avx512dq,</span>
<span class="line" id="L2437"> .avx512ifma,</span>
<span class="line" id="L2438"> .avx512vbmi,</span>
<span class="line" id="L2439"> .avx512vbmi2,</span>
<span class="line" id="L2440"> .avx512vl,</span>
<span class="line" id="L2441"> .avx512vnni,</span>
<span class="line" id="L2442"> .avx512vpopcntdq,</span>
<span class="line" id="L2443"> .bmi,</span>
<span class="line" id="L2444"> .bmi2,</span>
<span class="line" id="L2445"> .clflushopt,</span>
<span class="line" id="L2446"> .clwb,</span>
<span class="line" id="L2447"> .cmov,</span>
<span class="line" id="L2448"> .crc32,</span>
<span class="line" id="L2449"> .cx16,</span>
<span class="line" id="L2450"> .ermsb,</span>
<span class="line" id="L2451"> .fast_15bytenop,</span>
<span class="line" id="L2452"> .fast_gather,</span>
<span class="line" id="L2453"> .fast_scalar_fsqrt,</span>
<span class="line" id="L2454"> .fast_shld_rotate,</span>
<span class="line" id="L2455"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L2456"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L2457"> .fast_vector_fsqrt,</span>
<span class="line" id="L2458"> .fsgsbase,</span>
<span class="line" id="L2459"> .fsrm,</span>
<span class="line" id="L2460"> .fxsr,</span>
<span class="line" id="L2461"> .gfni,</span>
<span class="line" id="L2462"> .idivq_to_divl,</span>
<span class="line" id="L2463"> .invpcid,</span>
<span class="line" id="L2464"> .lzcnt,</span>
<span class="line" id="L2465"> .macrofusion,</span>
<span class="line" id="L2466"> .mmx,</span>
<span class="line" id="L2467"> .movbe,</span>
<span class="line" id="L2468"> .nopl,</span>
<span class="line" id="L2469"> .pconfig,</span>
<span class="line" id="L2470"> .pku,</span>
<span class="line" id="L2471"> .popcnt,</span>
<span class="line" id="L2472"> .prefer_256_bit,</span>
<span class="line" id="L2473"> .prfchw,</span>
<span class="line" id="L2474"> .rdpid,</span>
<span class="line" id="L2475"> .rdrnd,</span>
<span class="line" id="L2476"> .rdseed,</span>
<span class="line" id="L2477"> .sahf,</span>
<span class="line" id="L2478"> .sha,</span>
<span class="line" id="L2479"> .vaes,</span>
<span class="line" id="L2480"> .vpclmulqdq,</span>
<span class="line" id="L2481"> .vzeroupper,</span>
<span class="line" id="L2482"> .wbnoinvd,</span>
<span class="line" id="L2483"> .x87,</span>
<span class="line" id="L2484"> .xsavec,</span>
<span class="line" id="L2485"> .xsaveopt,</span>
<span class="line" id="L2486"> .xsaves,</span>
<span class="line" id="L2487"> }),</span>
<span class="line" id="L2488"> };</span>
<span class="line" id="L2489"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ivybridge = CpuModel{</span>
<span class="line" id="L2490"> .name = <span class="tok-str">"ivybridge"</span>,</span>
<span class="line" id="L2491"> .llvm_name = <span class="tok-str">"ivybridge"</span>,</span>
<span class="line" id="L2492"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2493"> .@"64bit",</span>
<span class="line" id="L2494"> .cmov,</span>
<span class="line" id="L2495"> .crc32,</span>
<span class="line" id="L2496"> .cx16,</span>
<span class="line" id="L2497"> .f16c,</span>
<span class="line" id="L2498"> .false_deps_popcnt,</span>
<span class="line" id="L2499"> .fast_15bytenop,</span>
<span class="line" id="L2500"> .fast_scalar_fsqrt,</span>
<span class="line" id="L2501"> .fast_shld_rotate,</span>
<span class="line" id="L2502"> .fsgsbase,</span>
<span class="line" id="L2503"> .fxsr,</span>
<span class="line" id="L2504"> .idivq_to_divl,</span>
<span class="line" id="L2505"> .macrofusion,</span>
<span class="line" id="L2506"> .mmx,</span>
<span class="line" id="L2507"> .nopl,</span>
<span class="line" id="L2508"> .pclmul,</span>
<span class="line" id="L2509"> .popcnt,</span>
<span class="line" id="L2510"> .rdrnd,</span>
<span class="line" id="L2511"> .sahf,</span>
<span class="line" id="L2512"> .slow_3ops_lea,</span>
<span class="line" id="L2513"> .slow_unaligned_mem_32,</span>
<span class="line" id="L2514"> .vzeroupper,</span>
<span class="line" id="L2515"> .x87,</span>
<span class="line" id="L2516"> .xsaveopt,</span>
<span class="line" id="L2517"> }),</span>
<span class="line" id="L2518"> };</span>
<span class="line" id="L2519"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> k6 = CpuModel{</span>
<span class="line" id="L2520"> .name = <span class="tok-str">"k6"</span>,</span>
<span class="line" id="L2521"> .llvm_name = <span class="tok-str">"k6"</span>,</span>
<span class="line" id="L2522"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2523"> .cx8,</span>
<span class="line" id="L2524"> .mmx,</span>
<span class="line" id="L2525"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2526"> .vzeroupper,</span>
<span class="line" id="L2527"> .x87,</span>
<span class="line" id="L2528"> }),</span>
<span class="line" id="L2529"> };</span>
<span class="line" id="L2530"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> k6_2 = CpuModel{</span>
<span class="line" id="L2531"> .name = <span class="tok-str">"k6_2"</span>,</span>
<span class="line" id="L2532"> .llvm_name = <span class="tok-str">"k6-2"</span>,</span>
<span class="line" id="L2533"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2534"> .@"3dnow",</span>
<span class="line" id="L2535"> .cx8,</span>
<span class="line" id="L2536"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2537"> .vzeroupper,</span>
<span class="line" id="L2538"> .x87,</span>
<span class="line" id="L2539"> }),</span>
<span class="line" id="L2540"> };</span>
<span class="line" id="L2541"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> k6_3 = CpuModel{</span>
<span class="line" id="L2542"> .name = <span class="tok-str">"k6_3"</span>,</span>
<span class="line" id="L2543"> .llvm_name = <span class="tok-str">"k6-3"</span>,</span>
<span class="line" id="L2544"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2545"> .@"3dnow",</span>
<span class="line" id="L2546"> .cx8,</span>
<span class="line" id="L2547"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2548"> .vzeroupper,</span>
<span class="line" id="L2549"> .x87,</span>
<span class="line" id="L2550"> }),</span>
<span class="line" id="L2551"> };</span>
<span class="line" id="L2552"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> k8 = CpuModel{</span>
<span class="line" id="L2553"> .name = <span class="tok-str">"k8"</span>,</span>
<span class="line" id="L2554"> .llvm_name = <span class="tok-str">"k8"</span>,</span>
<span class="line" id="L2555"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2556"> .@"3dnowa",</span>
<span class="line" id="L2557"> .@"64bit",</span>
<span class="line" id="L2558"> .cmov,</span>
<span class="line" id="L2559"> .cx8,</span>
<span class="line" id="L2560"> .fast_scalar_shift_masks,</span>
<span class="line" id="L2561"> .fxsr,</span>
<span class="line" id="L2562"> .nopl,</span>
<span class="line" id="L2563"> .sbb_dep_breaking,</span>
<span class="line" id="L2564"> .slow_shld,</span>
<span class="line" id="L2565"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2566"> .sse2,</span>
<span class="line" id="L2567"> .vzeroupper,</span>
<span class="line" id="L2568"> .x87,</span>
<span class="line" id="L2569"> }),</span>
<span class="line" id="L2570"> };</span>
<span class="line" id="L2571"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> k8_sse3 = CpuModel{</span>
<span class="line" id="L2572"> .name = <span class="tok-str">"k8_sse3"</span>,</span>
<span class="line" id="L2573"> .llvm_name = <span class="tok-str">"k8-sse3"</span>,</span>
<span class="line" id="L2574"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2575"> .@"3dnowa",</span>
<span class="line" id="L2576"> .@"64bit",</span>
<span class="line" id="L2577"> .cmov,</span>
<span class="line" id="L2578"> .cx16,</span>
<span class="line" id="L2579"> .fast_scalar_shift_masks,</span>
<span class="line" id="L2580"> .fxsr,</span>
<span class="line" id="L2581"> .nopl,</span>
<span class="line" id="L2582"> .sbb_dep_breaking,</span>
<span class="line" id="L2583"> .slow_shld,</span>
<span class="line" id="L2584"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2585"> .sse3,</span>
<span class="line" id="L2586"> .vzeroupper,</span>
<span class="line" id="L2587"> .x87,</span>
<span class="line" id="L2588"> }),</span>
<span class="line" id="L2589"> };</span>
<span class="line" id="L2590"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> knl = CpuModel{</span>
<span class="line" id="L2591"> .name = <span class="tok-str">"knl"</span>,</span>
<span class="line" id="L2592"> .llvm_name = <span class="tok-str">"knl"</span>,</span>
<span class="line" id="L2593"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2594"> .@"64bit",</span>
<span class="line" id="L2595"> .adx,</span>
<span class="line" id="L2596"> .aes,</span>
<span class="line" id="L2597"> .avx512cd,</span>
<span class="line" id="L2598"> .avx512er,</span>
<span class="line" id="L2599"> .avx512pf,</span>
<span class="line" id="L2600"> .bmi,</span>
<span class="line" id="L2601"> .bmi2,</span>
<span class="line" id="L2602"> .cmov,</span>
<span class="line" id="L2603"> .crc32,</span>
<span class="line" id="L2604"> .cx16,</span>
<span class="line" id="L2605"> .fast_gather,</span>
<span class="line" id="L2606"> .fast_movbe,</span>
<span class="line" id="L2607"> .fsgsbase,</span>
<span class="line" id="L2608"> .fxsr,</span>
<span class="line" id="L2609"> .idivq_to_divl,</span>
<span class="line" id="L2610"> .lzcnt,</span>
<span class="line" id="L2611"> .mmx,</span>
<span class="line" id="L2612"> .movbe,</span>
<span class="line" id="L2613"> .nopl,</span>
<span class="line" id="L2614"> .pclmul,</span>
<span class="line" id="L2615"> .popcnt,</span>
<span class="line" id="L2616"> .prefer_mask_registers,</span>
<span class="line" id="L2617"> .prefetchwt1,</span>
<span class="line" id="L2618"> .prfchw,</span>
<span class="line" id="L2619"> .rdrnd,</span>
<span class="line" id="L2620"> .rdseed,</span>
<span class="line" id="L2621"> .sahf,</span>
<span class="line" id="L2622"> .slow_3ops_lea,</span>
<span class="line" id="L2623"> .slow_incdec,</span>
<span class="line" id="L2624"> .slow_pmaddwd,</span>
<span class="line" id="L2625"> .slow_two_mem_ops,</span>
<span class="line" id="L2626"> .x87,</span>
<span class="line" id="L2627"> .xsaveopt,</span>
<span class="line" id="L2628"> }),</span>
<span class="line" id="L2629"> };</span>
<span class="line" id="L2630"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> knm = CpuModel{</span>
<span class="line" id="L2631"> .name = <span class="tok-str">"knm"</span>,</span>
<span class="line" id="L2632"> .llvm_name = <span class="tok-str">"knm"</span>,</span>
<span class="line" id="L2633"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2634"> .@"64bit",</span>
<span class="line" id="L2635"> .adx,</span>
<span class="line" id="L2636"> .aes,</span>
<span class="line" id="L2637"> .avx512cd,</span>
<span class="line" id="L2638"> .avx512er,</span>
<span class="line" id="L2639"> .avx512pf,</span>
<span class="line" id="L2640"> .avx512vpopcntdq,</span>
<span class="line" id="L2641"> .bmi,</span>
<span class="line" id="L2642"> .bmi2,</span>
<span class="line" id="L2643"> .cmov,</span>
<span class="line" id="L2644"> .crc32,</span>
<span class="line" id="L2645"> .cx16,</span>
<span class="line" id="L2646"> .fast_gather,</span>
<span class="line" id="L2647"> .fast_movbe,</span>
<span class="line" id="L2648"> .fsgsbase,</span>
<span class="line" id="L2649"> .fxsr,</span>
<span class="line" id="L2650"> .idivq_to_divl,</span>
<span class="line" id="L2651"> .lzcnt,</span>
<span class="line" id="L2652"> .mmx,</span>
<span class="line" id="L2653"> .movbe,</span>
<span class="line" id="L2654"> .nopl,</span>
<span class="line" id="L2655"> .pclmul,</span>
<span class="line" id="L2656"> .popcnt,</span>
<span class="line" id="L2657"> .prefer_mask_registers,</span>
<span class="line" id="L2658"> .prefetchwt1,</span>
<span class="line" id="L2659"> .prfchw,</span>
<span class="line" id="L2660"> .rdrnd,</span>
<span class="line" id="L2661"> .rdseed,</span>
<span class="line" id="L2662"> .sahf,</span>
<span class="line" id="L2663"> .slow_3ops_lea,</span>
<span class="line" id="L2664"> .slow_incdec,</span>
<span class="line" id="L2665"> .slow_pmaddwd,</span>
<span class="line" id="L2666"> .slow_two_mem_ops,</span>
<span class="line" id="L2667"> .x87,</span>
<span class="line" id="L2668"> .xsaveopt,</span>
<span class="line" id="L2669"> }),</span>
<span class="line" id="L2670"> };</span>
<span class="line" id="L2671"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> lakemont = CpuModel{</span>
<span class="line" id="L2672"> .name = <span class="tok-str">"lakemont"</span>,</span>
<span class="line" id="L2673"> .llvm_name = <span class="tok-str">"lakemont"</span>,</span>
<span class="line" id="L2674"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2675"> .cx8,</span>
<span class="line" id="L2676"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2677"> .soft_float,</span>
<span class="line" id="L2678"> .vzeroupper,</span>
<span class="line" id="L2679"> }),</span>
<span class="line" id="L2680"> };</span>
<span class="line" id="L2681"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> meteorlake = CpuModel{</span>
<span class="line" id="L2682"> .name = <span class="tok-str">"meteorlake"</span>,</span>
<span class="line" id="L2683"> .llvm_name = <span class="tok-str">"meteorlake"</span>,</span>
<span class="line" id="L2684"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2685"> .@"64bit",</span>
<span class="line" id="L2686"> .adx,</span>
<span class="line" id="L2687"> .allow_light_256_bit,</span>
<span class="line" id="L2688"> .avxvnni,</span>
<span class="line" id="L2689"> .bmi,</span>
<span class="line" id="L2690"> .bmi2,</span>
<span class="line" id="L2691"> .cldemote,</span>
<span class="line" id="L2692"> .clflushopt,</span>
<span class="line" id="L2693"> .clwb,</span>
<span class="line" id="L2694"> .cmov,</span>
<span class="line" id="L2695"> .crc32,</span>
<span class="line" id="L2696"> .cx16,</span>
<span class="line" id="L2697"> .f16c,</span>
<span class="line" id="L2698"> .false_deps_perm,</span>
<span class="line" id="L2699"> .false_deps_popcnt,</span>
<span class="line" id="L2700"> .fast_15bytenop,</span>
<span class="line" id="L2701"> .fast_gather,</span>
<span class="line" id="L2702"> .fast_scalar_fsqrt,</span>
<span class="line" id="L2703"> .fast_shld_rotate,</span>
<span class="line" id="L2704"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L2705"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L2706"> .fast_vector_fsqrt,</span>
<span class="line" id="L2707"> .fma,</span>
<span class="line" id="L2708"> .fsgsbase,</span>
<span class="line" id="L2709"> .fxsr,</span>
<span class="line" id="L2710"> .gfni,</span>
<span class="line" id="L2711"> .hreset,</span>
<span class="line" id="L2712"> .idivq_to_divl,</span>
<span class="line" id="L2713"> .invpcid,</span>
<span class="line" id="L2714"> .lzcnt,</span>
<span class="line" id="L2715"> .macrofusion,</span>
<span class="line" id="L2716"> .mmx,</span>
<span class="line" id="L2717"> .movbe,</span>
<span class="line" id="L2718"> .movdir64b,</span>
<span class="line" id="L2719"> .movdiri,</span>
<span class="line" id="L2720"> .nopl,</span>
<span class="line" id="L2721"> .pconfig,</span>
<span class="line" id="L2722"> .pku,</span>
<span class="line" id="L2723"> .popcnt,</span>
<span class="line" id="L2724"> .prfchw,</span>
<span class="line" id="L2725"> .ptwrite,</span>
<span class="line" id="L2726"> .rdpid,</span>
<span class="line" id="L2727"> .rdrnd,</span>
<span class="line" id="L2728"> .rdseed,</span>
<span class="line" id="L2729"> .sahf,</span>
<span class="line" id="L2730"> .serialize,</span>
<span class="line" id="L2731"> .sha,</span>
<span class="line" id="L2732"> .shstk,</span>
<span class="line" id="L2733"> .slow_3ops_lea,</span>
<span class="line" id="L2734"> .vaes,</span>
<span class="line" id="L2735"> .vpclmulqdq,</span>
<span class="line" id="L2736"> .vzeroupper,</span>
<span class="line" id="L2737"> .waitpkg,</span>
<span class="line" id="L2738"> .widekl,</span>
<span class="line" id="L2739"> .x87,</span>
<span class="line" id="L2740"> .xsavec,</span>
<span class="line" id="L2741"> .xsaveopt,</span>
<span class="line" id="L2742"> .xsaves,</span>
<span class="line" id="L2743"> }),</span>
<span class="line" id="L2744"> };</span>
<span class="line" id="L2745"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> nehalem = CpuModel{</span>
<span class="line" id="L2746"> .name = <span class="tok-str">"nehalem"</span>,</span>
<span class="line" id="L2747"> .llvm_name = <span class="tok-str">"nehalem"</span>,</span>
<span class="line" id="L2748"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2749"> .@"64bit",</span>
<span class="line" id="L2750"> .cmov,</span>
<span class="line" id="L2751"> .crc32,</span>
<span class="line" id="L2752"> .cx16,</span>
<span class="line" id="L2753"> .fxsr,</span>
<span class="line" id="L2754"> .macrofusion,</span>
<span class="line" id="L2755"> .mmx,</span>
<span class="line" id="L2756"> .nopl,</span>
<span class="line" id="L2757"> .popcnt,</span>
<span class="line" id="L2758"> .sahf,</span>
<span class="line" id="L2759"> .sse4_2,</span>
<span class="line" id="L2760"> .vzeroupper,</span>
<span class="line" id="L2761"> .x87,</span>
<span class="line" id="L2762"> }),</span>
<span class="line" id="L2763"> };</span>
<span class="line" id="L2764"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> nocona = CpuModel{</span>
<span class="line" id="L2765"> .name = <span class="tok-str">"nocona"</span>,</span>
<span class="line" id="L2766"> .llvm_name = <span class="tok-str">"nocona"</span>,</span>
<span class="line" id="L2767"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2768"> .@"64bit",</span>
<span class="line" id="L2769"> .cmov,</span>
<span class="line" id="L2770"> .cx16,</span>
<span class="line" id="L2771"> .fxsr,</span>
<span class="line" id="L2772"> .mmx,</span>
<span class="line" id="L2773"> .nopl,</span>
<span class="line" id="L2774"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2775"> .sse3,</span>
<span class="line" id="L2776"> .vzeroupper,</span>
<span class="line" id="L2777"> .x87,</span>
<span class="line" id="L2778"> }),</span>
<span class="line" id="L2779"> };</span>
<span class="line" id="L2780"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> opteron = CpuModel{</span>
<span class="line" id="L2781"> .name = <span class="tok-str">"opteron"</span>,</span>
<span class="line" id="L2782"> .llvm_name = <span class="tok-str">"opteron"</span>,</span>
<span class="line" id="L2783"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2784"> .@"3dnowa",</span>
<span class="line" id="L2785"> .@"64bit",</span>
<span class="line" id="L2786"> .cmov,</span>
<span class="line" id="L2787"> .cx8,</span>
<span class="line" id="L2788"> .fast_scalar_shift_masks,</span>
<span class="line" id="L2789"> .fxsr,</span>
<span class="line" id="L2790"> .nopl,</span>
<span class="line" id="L2791"> .sbb_dep_breaking,</span>
<span class="line" id="L2792"> .slow_shld,</span>
<span class="line" id="L2793"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2794"> .sse2,</span>
<span class="line" id="L2795"> .vzeroupper,</span>
<span class="line" id="L2796"> .x87,</span>
<span class="line" id="L2797"> }),</span>
<span class="line" id="L2798"> };</span>
<span class="line" id="L2799"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> opteron_sse3 = CpuModel{</span>
<span class="line" id="L2800"> .name = <span class="tok-str">"opteron_sse3"</span>,</span>
<span class="line" id="L2801"> .llvm_name = <span class="tok-str">"opteron-sse3"</span>,</span>
<span class="line" id="L2802"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2803"> .@"3dnowa",</span>
<span class="line" id="L2804"> .@"64bit",</span>
<span class="line" id="L2805"> .cmov,</span>
<span class="line" id="L2806"> .cx16,</span>
<span class="line" id="L2807"> .fast_scalar_shift_masks,</span>
<span class="line" id="L2808"> .fxsr,</span>
<span class="line" id="L2809"> .nopl,</span>
<span class="line" id="L2810"> .sbb_dep_breaking,</span>
<span class="line" id="L2811"> .slow_shld,</span>
<span class="line" id="L2812"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2813"> .sse3,</span>
<span class="line" id="L2814"> .vzeroupper,</span>
<span class="line" id="L2815"> .x87,</span>
<span class="line" id="L2816"> }),</span>
<span class="line" id="L2817"> };</span>
<span class="line" id="L2818"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> penryn = CpuModel{</span>
<span class="line" id="L2819"> .name = <span class="tok-str">"penryn"</span>,</span>
<span class="line" id="L2820"> .llvm_name = <span class="tok-str">"penryn"</span>,</span>
<span class="line" id="L2821"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2822"> .@"64bit",</span>
<span class="line" id="L2823"> .cmov,</span>
<span class="line" id="L2824"> .cx16,</span>
<span class="line" id="L2825"> .fxsr,</span>
<span class="line" id="L2826"> .macrofusion,</span>
<span class="line" id="L2827"> .mmx,</span>
<span class="line" id="L2828"> .nopl,</span>
<span class="line" id="L2829"> .sahf,</span>
<span class="line" id="L2830"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2831"> .sse4_1,</span>
<span class="line" id="L2832"> .vzeroupper,</span>
<span class="line" id="L2833"> .x87,</span>
<span class="line" id="L2834"> }),</span>
<span class="line" id="L2835"> };</span>
<span class="line" id="L2836"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> pentium = CpuModel{</span>
<span class="line" id="L2837"> .name = <span class="tok-str">"pentium"</span>,</span>
<span class="line" id="L2838"> .llvm_name = <span class="tok-str">"pentium"</span>,</span>
<span class="line" id="L2839"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2840"> .cx8,</span>
<span class="line" id="L2841"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2842"> .vzeroupper,</span>
<span class="line" id="L2843"> .x87,</span>
<span class="line" id="L2844"> }),</span>
<span class="line" id="L2845"> };</span>
<span class="line" id="L2846"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> pentium2 = CpuModel{</span>
<span class="line" id="L2847"> .name = <span class="tok-str">"pentium2"</span>,</span>
<span class="line" id="L2848"> .llvm_name = <span class="tok-str">"pentium2"</span>,</span>
<span class="line" id="L2849"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2850"> .cmov,</span>
<span class="line" id="L2851"> .cx8,</span>
<span class="line" id="L2852"> .fxsr,</span>
<span class="line" id="L2853"> .mmx,</span>
<span class="line" id="L2854"> .nopl,</span>
<span class="line" id="L2855"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2856"> .vzeroupper,</span>
<span class="line" id="L2857"> .x87,</span>
<span class="line" id="L2858"> }),</span>
<span class="line" id="L2859"> };</span>
<span class="line" id="L2860"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> pentium3 = CpuModel{</span>
<span class="line" id="L2861"> .name = <span class="tok-str">"pentium3"</span>,</span>
<span class="line" id="L2862"> .llvm_name = <span class="tok-str">"pentium3"</span>,</span>
<span class="line" id="L2863"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2864"> .cmov,</span>
<span class="line" id="L2865"> .cx8,</span>
<span class="line" id="L2866"> .fxsr,</span>
<span class="line" id="L2867"> .mmx,</span>
<span class="line" id="L2868"> .nopl,</span>
<span class="line" id="L2869"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2870"> .sse,</span>
<span class="line" id="L2871"> .vzeroupper,</span>
<span class="line" id="L2872"> .x87,</span>
<span class="line" id="L2873"> }),</span>
<span class="line" id="L2874"> };</span>
<span class="line" id="L2875"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> pentium3m = CpuModel{</span>
<span class="line" id="L2876"> .name = <span class="tok-str">"pentium3m"</span>,</span>
<span class="line" id="L2877"> .llvm_name = <span class="tok-str">"pentium3m"</span>,</span>
<span class="line" id="L2878"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2879"> .cmov,</span>
<span class="line" id="L2880"> .cx8,</span>
<span class="line" id="L2881"> .fxsr,</span>
<span class="line" id="L2882"> .mmx,</span>
<span class="line" id="L2883"> .nopl,</span>
<span class="line" id="L2884"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2885"> .sse,</span>
<span class="line" id="L2886"> .vzeroupper,</span>
<span class="line" id="L2887"> .x87,</span>
<span class="line" id="L2888"> }),</span>
<span class="line" id="L2889"> };</span>
<span class="line" id="L2890"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> pentium4 = CpuModel{</span>
<span class="line" id="L2891"> .name = <span class="tok-str">"pentium4"</span>,</span>
<span class="line" id="L2892"> .llvm_name = <span class="tok-str">"pentium4"</span>,</span>
<span class="line" id="L2893"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2894"> .cmov,</span>
<span class="line" id="L2895"> .cx8,</span>
<span class="line" id="L2896"> .fxsr,</span>
<span class="line" id="L2897"> .mmx,</span>
<span class="line" id="L2898"> .nopl,</span>
<span class="line" id="L2899"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2900"> .sse2,</span>
<span class="line" id="L2901"> .vzeroupper,</span>
<span class="line" id="L2902"> .x87,</span>
<span class="line" id="L2903"> }),</span>
<span class="line" id="L2904"> };</span>
<span class="line" id="L2905"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> pentium4m = CpuModel{</span>
<span class="line" id="L2906"> .name = <span class="tok-str">"pentium4m"</span>,</span>
<span class="line" id="L2907"> .llvm_name = <span class="tok-str">"pentium4m"</span>,</span>
<span class="line" id="L2908"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2909"> .cmov,</span>
<span class="line" id="L2910"> .cx8,</span>
<span class="line" id="L2911"> .fxsr,</span>
<span class="line" id="L2912"> .mmx,</span>
<span class="line" id="L2913"> .nopl,</span>
<span class="line" id="L2914"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2915"> .sse2,</span>
<span class="line" id="L2916"> .vzeroupper,</span>
<span class="line" id="L2917"> .x87,</span>
<span class="line" id="L2918"> }),</span>
<span class="line" id="L2919"> };</span>
<span class="line" id="L2920"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> pentium_m = CpuModel{</span>
<span class="line" id="L2921"> .name = <span class="tok-str">"pentium_m"</span>,</span>
<span class="line" id="L2922"> .llvm_name = <span class="tok-str">"pentium-m"</span>,</span>
<span class="line" id="L2923"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2924"> .cmov,</span>
<span class="line" id="L2925"> .cx8,</span>
<span class="line" id="L2926"> .fxsr,</span>
<span class="line" id="L2927"> .mmx,</span>
<span class="line" id="L2928"> .nopl,</span>
<span class="line" id="L2929"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2930"> .sse2,</span>
<span class="line" id="L2931"> .vzeroupper,</span>
<span class="line" id="L2932"> .x87,</span>
<span class="line" id="L2933"> }),</span>
<span class="line" id="L2934"> };</span>
<span class="line" id="L2935"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> pentium_mmx = CpuModel{</span>
<span class="line" id="L2936"> .name = <span class="tok-str">"pentium_mmx"</span>,</span>
<span class="line" id="L2937"> .llvm_name = <span class="tok-str">"pentium-mmx"</span>,</span>
<span class="line" id="L2938"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2939"> .cx8,</span>
<span class="line" id="L2940"> .mmx,</span>
<span class="line" id="L2941"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2942"> .vzeroupper,</span>
<span class="line" id="L2943"> .x87,</span>
<span class="line" id="L2944"> }),</span>
<span class="line" id="L2945"> };</span>
<span class="line" id="L2946"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> pentiumpro = CpuModel{</span>
<span class="line" id="L2947"> .name = <span class="tok-str">"pentiumpro"</span>,</span>
<span class="line" id="L2948"> .llvm_name = <span class="tok-str">"pentiumpro"</span>,</span>
<span class="line" id="L2949"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2950"> .cmov,</span>
<span class="line" id="L2951"> .cx8,</span>
<span class="line" id="L2952"> .nopl,</span>
<span class="line" id="L2953"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2954"> .vzeroupper,</span>
<span class="line" id="L2955"> .x87,</span>
<span class="line" id="L2956"> }),</span>
<span class="line" id="L2957"> };</span>
<span class="line" id="L2958"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> prescott = CpuModel{</span>
<span class="line" id="L2959"> .name = <span class="tok-str">"prescott"</span>,</span>
<span class="line" id="L2960"> .llvm_name = <span class="tok-str">"prescott"</span>,</span>
<span class="line" id="L2961"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2962"> .cmov,</span>
<span class="line" id="L2963"> .cx8,</span>
<span class="line" id="L2964"> .fxsr,</span>
<span class="line" id="L2965"> .mmx,</span>
<span class="line" id="L2966"> .nopl,</span>
<span class="line" id="L2967"> .slow_unaligned_mem_16,</span>
<span class="line" id="L2968"> .sse3,</span>
<span class="line" id="L2969"> .vzeroupper,</span>
<span class="line" id="L2970"> .x87,</span>
<span class="line" id="L2971"> }),</span>
<span class="line" id="L2972"> };</span>
<span class="line" id="L2973"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> raptorlake = CpuModel{</span>
<span class="line" id="L2974"> .name = <span class="tok-str">"raptorlake"</span>,</span>
<span class="line" id="L2975"> .llvm_name = <span class="tok-str">"raptorlake"</span>,</span>
<span class="line" id="L2976"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L2977"> .@"64bit",</span>
<span class="line" id="L2978"> .adx,</span>
<span class="line" id="L2979"> .allow_light_256_bit,</span>
<span class="line" id="L2980"> .avxvnni,</span>
<span class="line" id="L2981"> .bmi,</span>
<span class="line" id="L2982"> .bmi2,</span>
<span class="line" id="L2983"> .cldemote,</span>
<span class="line" id="L2984"> .clflushopt,</span>
<span class="line" id="L2985"> .clwb,</span>
<span class="line" id="L2986"> .cmov,</span>
<span class="line" id="L2987"> .crc32,</span>
<span class="line" id="L2988"> .cx16,</span>
<span class="line" id="L2989"> .f16c,</span>
<span class="line" id="L2990"> .false_deps_perm,</span>
<span class="line" id="L2991"> .false_deps_popcnt,</span>
<span class="line" id="L2992"> .fast_15bytenop,</span>
<span class="line" id="L2993"> .fast_gather,</span>
<span class="line" id="L2994"> .fast_scalar_fsqrt,</span>
<span class="line" id="L2995"> .fast_shld_rotate,</span>
<span class="line" id="L2996"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L2997"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L2998"> .fast_vector_fsqrt,</span>
<span class="line" id="L2999"> .fma,</span>
<span class="line" id="L3000"> .fsgsbase,</span>
<span class="line" id="L3001"> .fxsr,</span>
<span class="line" id="L3002"> .gfni,</span>
<span class="line" id="L3003"> .hreset,</span>
<span class="line" id="L3004"> .idivq_to_divl,</span>
<span class="line" id="L3005"> .invpcid,</span>
<span class="line" id="L3006"> .lzcnt,</span>
<span class="line" id="L3007"> .macrofusion,</span>
<span class="line" id="L3008"> .mmx,</span>
<span class="line" id="L3009"> .movbe,</span>
<span class="line" id="L3010"> .movdir64b,</span>
<span class="line" id="L3011"> .movdiri,</span>
<span class="line" id="L3012"> .nopl,</span>
<span class="line" id="L3013"> .pconfig,</span>
<span class="line" id="L3014"> .pku,</span>
<span class="line" id="L3015"> .popcnt,</span>
<span class="line" id="L3016"> .prfchw,</span>
<span class="line" id="L3017"> .ptwrite,</span>
<span class="line" id="L3018"> .rdpid,</span>
<span class="line" id="L3019"> .rdrnd,</span>
<span class="line" id="L3020"> .rdseed,</span>
<span class="line" id="L3021"> .sahf,</span>
<span class="line" id="L3022"> .serialize,</span>
<span class="line" id="L3023"> .sha,</span>
<span class="line" id="L3024"> .shstk,</span>
<span class="line" id="L3025"> .slow_3ops_lea,</span>
<span class="line" id="L3026"> .vaes,</span>
<span class="line" id="L3027"> .vpclmulqdq,</span>
<span class="line" id="L3028"> .vzeroupper,</span>
<span class="line" id="L3029"> .waitpkg,</span>
<span class="line" id="L3030"> .widekl,</span>
<span class="line" id="L3031"> .x87,</span>
<span class="line" id="L3032"> .xsavec,</span>
<span class="line" id="L3033"> .xsaveopt,</span>
<span class="line" id="L3034"> .xsaves,</span>
<span class="line" id="L3035"> }),</span>
<span class="line" id="L3036"> };</span>
<span class="line" id="L3037"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> rocketlake = CpuModel{</span>
<span class="line" id="L3038"> .name = <span class="tok-str">"rocketlake"</span>,</span>
<span class="line" id="L3039"> .llvm_name = <span class="tok-str">"rocketlake"</span>,</span>
<span class="line" id="L3040"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3041"> .@"64bit",</span>
<span class="line" id="L3042"> .adx,</span>
<span class="line" id="L3043"> .allow_light_256_bit,</span>
<span class="line" id="L3044"> .avx512bitalg,</span>
<span class="line" id="L3045"> .avx512cd,</span>
<span class="line" id="L3046"> .avx512dq,</span>
<span class="line" id="L3047"> .avx512ifma,</span>
<span class="line" id="L3048"> .avx512vbmi,</span>
<span class="line" id="L3049"> .avx512vbmi2,</span>
<span class="line" id="L3050"> .avx512vl,</span>
<span class="line" id="L3051"> .avx512vnni,</span>
<span class="line" id="L3052"> .avx512vpopcntdq,</span>
<span class="line" id="L3053"> .bmi,</span>
<span class="line" id="L3054"> .bmi2,</span>
<span class="line" id="L3055"> .clflushopt,</span>
<span class="line" id="L3056"> .cmov,</span>
<span class="line" id="L3057"> .crc32,</span>
<span class="line" id="L3058"> .cx16,</span>
<span class="line" id="L3059"> .ermsb,</span>
<span class="line" id="L3060"> .fast_15bytenop,</span>
<span class="line" id="L3061"> .fast_gather,</span>
<span class="line" id="L3062"> .fast_scalar_fsqrt,</span>
<span class="line" id="L3063"> .fast_shld_rotate,</span>
<span class="line" id="L3064"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L3065"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L3066"> .fast_vector_fsqrt,</span>
<span class="line" id="L3067"> .fsgsbase,</span>
<span class="line" id="L3068"> .fsrm,</span>
<span class="line" id="L3069"> .fxsr,</span>
<span class="line" id="L3070"> .gfni,</span>
<span class="line" id="L3071"> .idivq_to_divl,</span>
<span class="line" id="L3072"> .invpcid,</span>
<span class="line" id="L3073"> .lzcnt,</span>
<span class="line" id="L3074"> .macrofusion,</span>
<span class="line" id="L3075"> .mmx,</span>
<span class="line" id="L3076"> .movbe,</span>
<span class="line" id="L3077"> .nopl,</span>
<span class="line" id="L3078"> .pku,</span>
<span class="line" id="L3079"> .popcnt,</span>
<span class="line" id="L3080"> .prefer_256_bit,</span>
<span class="line" id="L3081"> .prfchw,</span>
<span class="line" id="L3082"> .rdpid,</span>
<span class="line" id="L3083"> .rdrnd,</span>
<span class="line" id="L3084"> .rdseed,</span>
<span class="line" id="L3085"> .sahf,</span>
<span class="line" id="L3086"> .sha,</span>
<span class="line" id="L3087"> .vaes,</span>
<span class="line" id="L3088"> .vpclmulqdq,</span>
<span class="line" id="L3089"> .vzeroupper,</span>
<span class="line" id="L3090"> .x87,</span>
<span class="line" id="L3091"> .xsavec,</span>
<span class="line" id="L3092"> .xsaveopt,</span>
<span class="line" id="L3093"> .xsaves,</span>
<span class="line" id="L3094"> }),</span>
<span class="line" id="L3095"> };</span>
<span class="line" id="L3096"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> sandybridge = CpuModel{</span>
<span class="line" id="L3097"> .name = <span class="tok-str">"sandybridge"</span>,</span>
<span class="line" id="L3098"> .llvm_name = <span class="tok-str">"sandybridge"</span>,</span>
<span class="line" id="L3099"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3100"> .@"64bit",</span>
<span class="line" id="L3101"> .avx,</span>
<span class="line" id="L3102"> .cmov,</span>
<span class="line" id="L3103"> .crc32,</span>
<span class="line" id="L3104"> .cx16,</span>
<span class="line" id="L3105"> .false_deps_popcnt,</span>
<span class="line" id="L3106"> .fast_15bytenop,</span>
<span class="line" id="L3107"> .fast_scalar_fsqrt,</span>
<span class="line" id="L3108"> .fast_shld_rotate,</span>
<span class="line" id="L3109"> .fxsr,</span>
<span class="line" id="L3110"> .idivq_to_divl,</span>
<span class="line" id="L3111"> .macrofusion,</span>
<span class="line" id="L3112"> .mmx,</span>
<span class="line" id="L3113"> .nopl,</span>
<span class="line" id="L3114"> .pclmul,</span>
<span class="line" id="L3115"> .popcnt,</span>
<span class="line" id="L3116"> .sahf,</span>
<span class="line" id="L3117"> .slow_3ops_lea,</span>
<span class="line" id="L3118"> .slow_unaligned_mem_32,</span>
<span class="line" id="L3119"> .vzeroupper,</span>
<span class="line" id="L3120"> .x87,</span>
<span class="line" id="L3121"> .xsaveopt,</span>
<span class="line" id="L3122"> }),</span>
<span class="line" id="L3123"> };</span>
<span class="line" id="L3124"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> sapphirerapids = CpuModel{</span>
<span class="line" id="L3125"> .name = <span class="tok-str">"sapphirerapids"</span>,</span>
<span class="line" id="L3126"> .llvm_name = <span class="tok-str">"sapphirerapids"</span>,</span>
<span class="line" id="L3127"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3128"> .@"64bit",</span>
<span class="line" id="L3129"> .adx,</span>
<span class="line" id="L3130"> .allow_light_256_bit,</span>
<span class="line" id="L3131"> .amx_bf16,</span>
<span class="line" id="L3132"> .amx_int8,</span>
<span class="line" id="L3133"> .avx512bf16,</span>
<span class="line" id="L3134"> .avx512bitalg,</span>
<span class="line" id="L3135"> .avx512cd,</span>
<span class="line" id="L3136"> .avx512fp16,</span>
<span class="line" id="L3137"> .avx512ifma,</span>
<span class="line" id="L3138"> .avx512vbmi,</span>
<span class="line" id="L3139"> .avx512vbmi2,</span>
<span class="line" id="L3140"> .avx512vnni,</span>
<span class="line" id="L3141"> .avx512vpopcntdq,</span>
<span class="line" id="L3142"> .avxvnni,</span>
<span class="line" id="L3143"> .bmi,</span>
<span class="line" id="L3144"> .bmi2,</span>
<span class="line" id="L3145"> .cldemote,</span>
<span class="line" id="L3146"> .clflushopt,</span>
<span class="line" id="L3147"> .clwb,</span>
<span class="line" id="L3148"> .cmov,</span>
<span class="line" id="L3149"> .crc32,</span>
<span class="line" id="L3150"> .cx16,</span>
<span class="line" id="L3151"> .enqcmd,</span>
<span class="line" id="L3152"> .ermsb,</span>
<span class="line" id="L3153"> .false_deps_getmant,</span>
<span class="line" id="L3154"> .false_deps_mulc,</span>
<span class="line" id="L3155"> .false_deps_mullq,</span>
<span class="line" id="L3156"> .false_deps_perm,</span>
<span class="line" id="L3157"> .false_deps_range,</span>
<span class="line" id="L3158"> .fast_15bytenop,</span>
<span class="line" id="L3159"> .fast_gather,</span>
<span class="line" id="L3160"> .fast_scalar_fsqrt,</span>
<span class="line" id="L3161"> .fast_shld_rotate,</span>
<span class="line" id="L3162"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L3163"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L3164"> .fast_vector_fsqrt,</span>
<span class="line" id="L3165"> .fsgsbase,</span>
<span class="line" id="L3166"> .fsrm,</span>
<span class="line" id="L3167"> .fxsr,</span>
<span class="line" id="L3168"> .gfni,</span>
<span class="line" id="L3169"> .idivq_to_divl,</span>
<span class="line" id="L3170"> .invpcid,</span>
<span class="line" id="L3171"> .lzcnt,</span>
<span class="line" id="L3172"> .macrofusion,</span>
<span class="line" id="L3173"> .mmx,</span>
<span class="line" id="L3174"> .movbe,</span>
<span class="line" id="L3175"> .movdir64b,</span>
<span class="line" id="L3176"> .movdiri,</span>
<span class="line" id="L3177"> .nopl,</span>
<span class="line" id="L3178"> .pconfig,</span>
<span class="line" id="L3179"> .pku,</span>
<span class="line" id="L3180"> .popcnt,</span>
<span class="line" id="L3181"> .prefer_256_bit,</span>
<span class="line" id="L3182"> .prfchw,</span>
<span class="line" id="L3183"> .ptwrite,</span>
<span class="line" id="L3184"> .rdpid,</span>
<span class="line" id="L3185"> .rdrnd,</span>
<span class="line" id="L3186"> .rdseed,</span>
<span class="line" id="L3187"> .sahf,</span>
<span class="line" id="L3188"> .serialize,</span>
<span class="line" id="L3189"> .sha,</span>
<span class="line" id="L3190"> .shstk,</span>
<span class="line" id="L3191"> .tsxldtrk,</span>
<span class="line" id="L3192"> .uintr,</span>
<span class="line" id="L3193"> .vaes,</span>
<span class="line" id="L3194"> .vpclmulqdq,</span>
<span class="line" id="L3195"> .vzeroupper,</span>
<span class="line" id="L3196"> .waitpkg,</span>
<span class="line" id="L3197"> .wbnoinvd,</span>
<span class="line" id="L3198"> .x87,</span>
<span class="line" id="L3199"> .xsavec,</span>
<span class="line" id="L3200"> .xsaveopt,</span>
<span class="line" id="L3201"> .xsaves,</span>
<span class="line" id="L3202"> }),</span>
<span class="line" id="L3203"> };</span>
<span class="line" id="L3204"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> sierraforest = CpuModel{</span>
<span class="line" id="L3205"> .name = <span class="tok-str">"sierraforest"</span>,</span>
<span class="line" id="L3206"> .llvm_name = <span class="tok-str">"sierraforest"</span>,</span>
<span class="line" id="L3207"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3208"> .@"64bit",</span>
<span class="line" id="L3209"> .adx,</span>
<span class="line" id="L3210"> .avxifma,</span>
<span class="line" id="L3211"> .avxneconvert,</span>
<span class="line" id="L3212"> .avxvnni,</span>
<span class="line" id="L3213"> .avxvnniint8,</span>
<span class="line" id="L3214"> .bmi,</span>
<span class="line" id="L3215"> .bmi2,</span>
<span class="line" id="L3216"> .cldemote,</span>
<span class="line" id="L3217"> .clflushopt,</span>
<span class="line" id="L3218"> .clwb,</span>
<span class="line" id="L3219"> .cmov,</span>
<span class="line" id="L3220"> .cmpccxadd,</span>
<span class="line" id="L3221"> .crc32,</span>
<span class="line" id="L3222"> .cx16,</span>
<span class="line" id="L3223"> .f16c,</span>
<span class="line" id="L3224"> .fast_movbe,</span>
<span class="line" id="L3225"> .fma,</span>
<span class="line" id="L3226"> .fsgsbase,</span>
<span class="line" id="L3227"> .fxsr,</span>
<span class="line" id="L3228"> .gfni,</span>
<span class="line" id="L3229"> .hreset,</span>
<span class="line" id="L3230"> .invpcid,</span>
<span class="line" id="L3231"> .lzcnt,</span>
<span class="line" id="L3232"> .mmx,</span>
<span class="line" id="L3233"> .movbe,</span>
<span class="line" id="L3234"> .movdir64b,</span>
<span class="line" id="L3235"> .movdiri,</span>
<span class="line" id="L3236"> .nopl,</span>
<span class="line" id="L3237"> .pconfig,</span>
<span class="line" id="L3238"> .pku,</span>
<span class="line" id="L3239"> .popcnt,</span>
<span class="line" id="L3240"> .prfchw,</span>
<span class="line" id="L3241"> .ptwrite,</span>
<span class="line" id="L3242"> .rdpid,</span>
<span class="line" id="L3243"> .rdrnd,</span>
<span class="line" id="L3244"> .rdseed,</span>
<span class="line" id="L3245"> .sahf,</span>
<span class="line" id="L3246"> .serialize,</span>
<span class="line" id="L3247"> .sha,</span>
<span class="line" id="L3248"> .shstk,</span>
<span class="line" id="L3249"> .slow_incdec,</span>
<span class="line" id="L3250"> .slow_lea,</span>
<span class="line" id="L3251"> .slow_two_mem_ops,</span>
<span class="line" id="L3252"> .use_glm_div_sqrt_costs,</span>
<span class="line" id="L3253"> .vaes,</span>
<span class="line" id="L3254"> .vpclmulqdq,</span>
<span class="line" id="L3255"> .vzeroupper,</span>
<span class="line" id="L3256"> .waitpkg,</span>
<span class="line" id="L3257"> .widekl,</span>
<span class="line" id="L3258"> .x87,</span>
<span class="line" id="L3259"> .xsavec,</span>
<span class="line" id="L3260"> .xsaveopt,</span>
<span class="line" id="L3261"> .xsaves,</span>
<span class="line" id="L3262"> }),</span>
<span class="line" id="L3263"> };</span>
<span class="line" id="L3264"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> silvermont = CpuModel{</span>
<span class="line" id="L3265"> .name = <span class="tok-str">"silvermont"</span>,</span>
<span class="line" id="L3266"> .llvm_name = <span class="tok-str">"silvermont"</span>,</span>
<span class="line" id="L3267"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3268"> .@"64bit",</span>
<span class="line" id="L3269"> .cmov,</span>
<span class="line" id="L3270"> .crc32,</span>
<span class="line" id="L3271"> .cx16,</span>
<span class="line" id="L3272"> .false_deps_popcnt,</span>
<span class="line" id="L3273"> .fast_7bytenop,</span>
<span class="line" id="L3274"> .fast_movbe,</span>
<span class="line" id="L3275"> .fxsr,</span>
<span class="line" id="L3276"> .idivq_to_divl,</span>
<span class="line" id="L3277"> .mmx,</span>
<span class="line" id="L3278"> .movbe,</span>
<span class="line" id="L3279"> .nopl,</span>
<span class="line" id="L3280"> .pclmul,</span>
<span class="line" id="L3281"> .popcnt,</span>
<span class="line" id="L3282"> .prfchw,</span>
<span class="line" id="L3283"> .rdrnd,</span>
<span class="line" id="L3284"> .sahf,</span>
<span class="line" id="L3285"> .slow_incdec,</span>
<span class="line" id="L3286"> .slow_lea,</span>
<span class="line" id="L3287"> .slow_pmulld,</span>
<span class="line" id="L3288"> .slow_two_mem_ops,</span>
<span class="line" id="L3289"> .sse4_2,</span>
<span class="line" id="L3290"> .use_slm_arith_costs,</span>
<span class="line" id="L3291"> .vzeroupper,</span>
<span class="line" id="L3292"> .x87,</span>
<span class="line" id="L3293"> }),</span>
<span class="line" id="L3294"> };</span>
<span class="line" id="L3295"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> skx = CpuModel{</span>
<span class="line" id="L3296"> .name = <span class="tok-str">"skx"</span>,</span>
<span class="line" id="L3297"> .llvm_name = <span class="tok-str">"skx"</span>,</span>
<span class="line" id="L3298"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3299"> .@"64bit",</span>
<span class="line" id="L3300"> .adx,</span>
<span class="line" id="L3301"> .aes,</span>
<span class="line" id="L3302"> .allow_light_256_bit,</span>
<span class="line" id="L3303"> .avx512bw,</span>
<span class="line" id="L3304"> .avx512cd,</span>
<span class="line" id="L3305"> .avx512dq,</span>
<span class="line" id="L3306"> .avx512vl,</span>
<span class="line" id="L3307"> .bmi,</span>
<span class="line" id="L3308"> .bmi2,</span>
<span class="line" id="L3309"> .clflushopt,</span>
<span class="line" id="L3310"> .clwb,</span>
<span class="line" id="L3311"> .cmov,</span>
<span class="line" id="L3312"> .crc32,</span>
<span class="line" id="L3313"> .cx16,</span>
<span class="line" id="L3314"> .ermsb,</span>
<span class="line" id="L3315"> .false_deps_popcnt,</span>
<span class="line" id="L3316"> .fast_15bytenop,</span>
<span class="line" id="L3317"> .fast_gather,</span>
<span class="line" id="L3318"> .fast_scalar_fsqrt,</span>
<span class="line" id="L3319"> .fast_shld_rotate,</span>
<span class="line" id="L3320"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L3321"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L3322"> .fast_vector_fsqrt,</span>
<span class="line" id="L3323"> .fsgsbase,</span>
<span class="line" id="L3324"> .fxsr,</span>
<span class="line" id="L3325"> .idivq_to_divl,</span>
<span class="line" id="L3326"> .invpcid,</span>
<span class="line" id="L3327"> .lzcnt,</span>
<span class="line" id="L3328"> .macrofusion,</span>
<span class="line" id="L3329"> .mmx,</span>
<span class="line" id="L3330"> .movbe,</span>
<span class="line" id="L3331"> .nopl,</span>
<span class="line" id="L3332"> .pclmul,</span>
<span class="line" id="L3333"> .pku,</span>
<span class="line" id="L3334"> .popcnt,</span>
<span class="line" id="L3335"> .prefer_256_bit,</span>
<span class="line" id="L3336"> .prfchw,</span>
<span class="line" id="L3337"> .rdrnd,</span>
<span class="line" id="L3338"> .rdseed,</span>
<span class="line" id="L3339"> .sahf,</span>
<span class="line" id="L3340"> .slow_3ops_lea,</span>
<span class="line" id="L3341"> .vzeroupper,</span>
<span class="line" id="L3342"> .x87,</span>
<span class="line" id="L3343"> .xsavec,</span>
<span class="line" id="L3344"> .xsaveopt,</span>
<span class="line" id="L3345"> .xsaves,</span>
<span class="line" id="L3346"> }),</span>
<span class="line" id="L3347"> };</span>
<span class="line" id="L3348"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> skylake = CpuModel{</span>
<span class="line" id="L3349"> .name = <span class="tok-str">"skylake"</span>,</span>
<span class="line" id="L3350"> .llvm_name = <span class="tok-str">"skylake"</span>,</span>
<span class="line" id="L3351"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3352"> .@"64bit",</span>
<span class="line" id="L3353"> .adx,</span>
<span class="line" id="L3354"> .aes,</span>
<span class="line" id="L3355"> .allow_light_256_bit,</span>
<span class="line" id="L3356"> .avx2,</span>
<span class="line" id="L3357"> .bmi,</span>
<span class="line" id="L3358"> .bmi2,</span>
<span class="line" id="L3359"> .clflushopt,</span>
<span class="line" id="L3360"> .cmov,</span>
<span class="line" id="L3361"> .crc32,</span>
<span class="line" id="L3362"> .cx16,</span>
<span class="line" id="L3363"> .ermsb,</span>
<span class="line" id="L3364"> .f16c,</span>
<span class="line" id="L3365"> .false_deps_popcnt,</span>
<span class="line" id="L3366"> .fast_15bytenop,</span>
<span class="line" id="L3367"> .fast_gather,</span>
<span class="line" id="L3368"> .fast_scalar_fsqrt,</span>
<span class="line" id="L3369"> .fast_shld_rotate,</span>
<span class="line" id="L3370"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L3371"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L3372"> .fast_vector_fsqrt,</span>
<span class="line" id="L3373"> .fma,</span>
<span class="line" id="L3374"> .fsgsbase,</span>
<span class="line" id="L3375"> .fxsr,</span>
<span class="line" id="L3376"> .idivq_to_divl,</span>
<span class="line" id="L3377"> .invpcid,</span>
<span class="line" id="L3378"> .lzcnt,</span>
<span class="line" id="L3379"> .macrofusion,</span>
<span class="line" id="L3380"> .mmx,</span>
<span class="line" id="L3381"> .movbe,</span>
<span class="line" id="L3382"> .nopl,</span>
<span class="line" id="L3383"> .pclmul,</span>
<span class="line" id="L3384"> .popcnt,</span>
<span class="line" id="L3385"> .prfchw,</span>
<span class="line" id="L3386"> .rdrnd,</span>
<span class="line" id="L3387"> .rdseed,</span>
<span class="line" id="L3388"> .sahf,</span>
<span class="line" id="L3389"> .slow_3ops_lea,</span>
<span class="line" id="L3390"> .vzeroupper,</span>
<span class="line" id="L3391"> .x87,</span>
<span class="line" id="L3392"> .xsavec,</span>
<span class="line" id="L3393"> .xsaveopt,</span>
<span class="line" id="L3394"> .xsaves,</span>
<span class="line" id="L3395"> }),</span>
<span class="line" id="L3396"> };</span>
<span class="line" id="L3397"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> skylake_avx512 = CpuModel{</span>
<span class="line" id="L3398"> .name = <span class="tok-str">"skylake_avx512"</span>,</span>
<span class="line" id="L3399"> .llvm_name = <span class="tok-str">"skylake-avx512"</span>,</span>
<span class="line" id="L3400"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3401"> .@"64bit",</span>
<span class="line" id="L3402"> .adx,</span>
<span class="line" id="L3403"> .aes,</span>
<span class="line" id="L3404"> .allow_light_256_bit,</span>
<span class="line" id="L3405"> .avx512bw,</span>
<span class="line" id="L3406"> .avx512cd,</span>
<span class="line" id="L3407"> .avx512dq,</span>
<span class="line" id="L3408"> .avx512vl,</span>
<span class="line" id="L3409"> .bmi,</span>
<span class="line" id="L3410"> .bmi2,</span>
<span class="line" id="L3411"> .clflushopt,</span>
<span class="line" id="L3412"> .clwb,</span>
<span class="line" id="L3413"> .cmov,</span>
<span class="line" id="L3414"> .crc32,</span>
<span class="line" id="L3415"> .cx16,</span>
<span class="line" id="L3416"> .ermsb,</span>
<span class="line" id="L3417"> .false_deps_popcnt,</span>
<span class="line" id="L3418"> .fast_15bytenop,</span>
<span class="line" id="L3419"> .fast_gather,</span>
<span class="line" id="L3420"> .fast_scalar_fsqrt,</span>
<span class="line" id="L3421"> .fast_shld_rotate,</span>
<span class="line" id="L3422"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L3423"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L3424"> .fast_vector_fsqrt,</span>
<span class="line" id="L3425"> .fsgsbase,</span>
<span class="line" id="L3426"> .fxsr,</span>
<span class="line" id="L3427"> .idivq_to_divl,</span>
<span class="line" id="L3428"> .invpcid,</span>
<span class="line" id="L3429"> .lzcnt,</span>
<span class="line" id="L3430"> .macrofusion,</span>
<span class="line" id="L3431"> .mmx,</span>
<span class="line" id="L3432"> .movbe,</span>
<span class="line" id="L3433"> .nopl,</span>
<span class="line" id="L3434"> .pclmul,</span>
<span class="line" id="L3435"> .pku,</span>
<span class="line" id="L3436"> .popcnt,</span>
<span class="line" id="L3437"> .prefer_256_bit,</span>
<span class="line" id="L3438"> .prfchw,</span>
<span class="line" id="L3439"> .rdrnd,</span>
<span class="line" id="L3440"> .rdseed,</span>
<span class="line" id="L3441"> .sahf,</span>
<span class="line" id="L3442"> .slow_3ops_lea,</span>
<span class="line" id="L3443"> .vzeroupper,</span>
<span class="line" id="L3444"> .x87,</span>
<span class="line" id="L3445"> .xsavec,</span>
<span class="line" id="L3446"> .xsaveopt,</span>
<span class="line" id="L3447"> .xsaves,</span>
<span class="line" id="L3448"> }),</span>
<span class="line" id="L3449"> };</span>
<span class="line" id="L3450"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> slm = CpuModel{</span>
<span class="line" id="L3451"> .name = <span class="tok-str">"slm"</span>,</span>
<span class="line" id="L3452"> .llvm_name = <span class="tok-str">"slm"</span>,</span>
<span class="line" id="L3453"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3454"> .@"64bit",</span>
<span class="line" id="L3455"> .cmov,</span>
<span class="line" id="L3456"> .crc32,</span>
<span class="line" id="L3457"> .cx16,</span>
<span class="line" id="L3458"> .false_deps_popcnt,</span>
<span class="line" id="L3459"> .fast_7bytenop,</span>
<span class="line" id="L3460"> .fast_movbe,</span>
<span class="line" id="L3461"> .fxsr,</span>
<span class="line" id="L3462"> .idivq_to_divl,</span>
<span class="line" id="L3463"> .mmx,</span>
<span class="line" id="L3464"> .movbe,</span>
<span class="line" id="L3465"> .nopl,</span>
<span class="line" id="L3466"> .pclmul,</span>
<span class="line" id="L3467"> .popcnt,</span>
<span class="line" id="L3468"> .prfchw,</span>
<span class="line" id="L3469"> .rdrnd,</span>
<span class="line" id="L3470"> .sahf,</span>
<span class="line" id="L3471"> .slow_incdec,</span>
<span class="line" id="L3472"> .slow_lea,</span>
<span class="line" id="L3473"> .slow_pmulld,</span>
<span class="line" id="L3474"> .slow_two_mem_ops,</span>
<span class="line" id="L3475"> .sse4_2,</span>
<span class="line" id="L3476"> .use_slm_arith_costs,</span>
<span class="line" id="L3477"> .vzeroupper,</span>
<span class="line" id="L3478"> .x87,</span>
<span class="line" id="L3479"> }),</span>
<span class="line" id="L3480"> };</span>
<span class="line" id="L3481"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> tigerlake = CpuModel{</span>
<span class="line" id="L3482"> .name = <span class="tok-str">"tigerlake"</span>,</span>
<span class="line" id="L3483"> .llvm_name = <span class="tok-str">"tigerlake"</span>,</span>
<span class="line" id="L3484"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3485"> .@"64bit",</span>
<span class="line" id="L3486"> .adx,</span>
<span class="line" id="L3487"> .allow_light_256_bit,</span>
<span class="line" id="L3488"> .avx512bitalg,</span>
<span class="line" id="L3489"> .avx512cd,</span>
<span class="line" id="L3490"> .avx512dq,</span>
<span class="line" id="L3491"> .avx512ifma,</span>
<span class="line" id="L3492"> .avx512vbmi,</span>
<span class="line" id="L3493"> .avx512vbmi2,</span>
<span class="line" id="L3494"> .avx512vl,</span>
<span class="line" id="L3495"> .avx512vnni,</span>
<span class="line" id="L3496"> .avx512vp2intersect,</span>
<span class="line" id="L3497"> .avx512vpopcntdq,</span>
<span class="line" id="L3498"> .bmi,</span>
<span class="line" id="L3499"> .bmi2,</span>
<span class="line" id="L3500"> .clflushopt,</span>
<span class="line" id="L3501"> .clwb,</span>
<span class="line" id="L3502"> .cmov,</span>
<span class="line" id="L3503"> .crc32,</span>
<span class="line" id="L3504"> .cx16,</span>
<span class="line" id="L3505"> .ermsb,</span>
<span class="line" id="L3506"> .fast_15bytenop,</span>
<span class="line" id="L3507"> .fast_gather,</span>
<span class="line" id="L3508"> .fast_scalar_fsqrt,</span>
<span class="line" id="L3509"> .fast_shld_rotate,</span>
<span class="line" id="L3510"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L3511"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L3512"> .fast_vector_fsqrt,</span>
<span class="line" id="L3513"> .fsgsbase,</span>
<span class="line" id="L3514"> .fsrm,</span>
<span class="line" id="L3515"> .fxsr,</span>
<span class="line" id="L3516"> .gfni,</span>
<span class="line" id="L3517"> .idivq_to_divl,</span>
<span class="line" id="L3518"> .invpcid,</span>
<span class="line" id="L3519"> .lzcnt,</span>
<span class="line" id="L3520"> .macrofusion,</span>
<span class="line" id="L3521"> .mmx,</span>
<span class="line" id="L3522"> .movbe,</span>
<span class="line" id="L3523"> .movdir64b,</span>
<span class="line" id="L3524"> .movdiri,</span>
<span class="line" id="L3525"> .nopl,</span>
<span class="line" id="L3526"> .pku,</span>
<span class="line" id="L3527"> .popcnt,</span>
<span class="line" id="L3528"> .prefer_256_bit,</span>
<span class="line" id="L3529"> .prfchw,</span>
<span class="line" id="L3530"> .rdpid,</span>
<span class="line" id="L3531"> .rdrnd,</span>
<span class="line" id="L3532"> .rdseed,</span>
<span class="line" id="L3533"> .sahf,</span>
<span class="line" id="L3534"> .sha,</span>
<span class="line" id="L3535"> .shstk,</span>
<span class="line" id="L3536"> .vaes,</span>
<span class="line" id="L3537"> .vpclmulqdq,</span>
<span class="line" id="L3538"> .vzeroupper,</span>
<span class="line" id="L3539"> .x87,</span>
<span class="line" id="L3540"> .xsavec,</span>
<span class="line" id="L3541"> .xsaveopt,</span>
<span class="line" id="L3542"> .xsaves,</span>
<span class="line" id="L3543"> }),</span>
<span class="line" id="L3544"> };</span>
<span class="line" id="L3545"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> tremont = CpuModel{</span>
<span class="line" id="L3546"> .name = <span class="tok-str">"tremont"</span>,</span>
<span class="line" id="L3547"> .llvm_name = <span class="tok-str">"tremont"</span>,</span>
<span class="line" id="L3548"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3549"> .@"64bit",</span>
<span class="line" id="L3550"> .aes,</span>
<span class="line" id="L3551"> .clflushopt,</span>
<span class="line" id="L3552"> .clwb,</span>
<span class="line" id="L3553"> .cmov,</span>
<span class="line" id="L3554"> .crc32,</span>
<span class="line" id="L3555"> .cx16,</span>
<span class="line" id="L3556"> .fast_movbe,</span>
<span class="line" id="L3557"> .fsgsbase,</span>
<span class="line" id="L3558"> .fxsr,</span>
<span class="line" id="L3559"> .gfni,</span>
<span class="line" id="L3560"> .mmx,</span>
<span class="line" id="L3561"> .movbe,</span>
<span class="line" id="L3562"> .nopl,</span>
<span class="line" id="L3563"> .pclmul,</span>
<span class="line" id="L3564"> .popcnt,</span>
<span class="line" id="L3565"> .prfchw,</span>
<span class="line" id="L3566"> .ptwrite,</span>
<span class="line" id="L3567"> .rdpid,</span>
<span class="line" id="L3568"> .rdrnd,</span>
<span class="line" id="L3569"> .rdseed,</span>
<span class="line" id="L3570"> .sahf,</span>
<span class="line" id="L3571"> .sha,</span>
<span class="line" id="L3572"> .slow_incdec,</span>
<span class="line" id="L3573"> .slow_lea,</span>
<span class="line" id="L3574"> .slow_two_mem_ops,</span>
<span class="line" id="L3575"> .sse4_2,</span>
<span class="line" id="L3576"> .use_glm_div_sqrt_costs,</span>
<span class="line" id="L3577"> .vzeroupper,</span>
<span class="line" id="L3578"> .x87,</span>
<span class="line" id="L3579"> .xsavec,</span>
<span class="line" id="L3580"> .xsaveopt,</span>
<span class="line" id="L3581"> .xsaves,</span>
<span class="line" id="L3582"> }),</span>
<span class="line" id="L3583"> };</span>
<span class="line" id="L3584"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> westmere = CpuModel{</span>
<span class="line" id="L3585"> .name = <span class="tok-str">"westmere"</span>,</span>
<span class="line" id="L3586"> .llvm_name = <span class="tok-str">"westmere"</span>,</span>
<span class="line" id="L3587"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3588"> .@"64bit",</span>
<span class="line" id="L3589"> .cmov,</span>
<span class="line" id="L3590"> .crc32,</span>
<span class="line" id="L3591"> .cx16,</span>
<span class="line" id="L3592"> .fxsr,</span>
<span class="line" id="L3593"> .macrofusion,</span>
<span class="line" id="L3594"> .mmx,</span>
<span class="line" id="L3595"> .nopl,</span>
<span class="line" id="L3596"> .pclmul,</span>
<span class="line" id="L3597"> .popcnt,</span>
<span class="line" id="L3598"> .sahf,</span>
<span class="line" id="L3599"> .sse4_2,</span>
<span class="line" id="L3600"> .vzeroupper,</span>
<span class="line" id="L3601"> .x87,</span>
<span class="line" id="L3602"> }),</span>
<span class="line" id="L3603"> };</span>
<span class="line" id="L3604"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> winchip2 = CpuModel{</span>
<span class="line" id="L3605"> .name = <span class="tok-str">"winchip2"</span>,</span>
<span class="line" id="L3606"> .llvm_name = <span class="tok-str">"winchip2"</span>,</span>
<span class="line" id="L3607"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3608"> .@"3dnow",</span>
<span class="line" id="L3609"> .slow_unaligned_mem_16,</span>
<span class="line" id="L3610"> .vzeroupper,</span>
<span class="line" id="L3611"> .x87,</span>
<span class="line" id="L3612"> }),</span>
<span class="line" id="L3613"> };</span>
<span class="line" id="L3614"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> winchip_c6 = CpuModel{</span>
<span class="line" id="L3615"> .name = <span class="tok-str">"winchip_c6"</span>,</span>
<span class="line" id="L3616"> .llvm_name = <span class="tok-str">"winchip-c6"</span>,</span>
<span class="line" id="L3617"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3618"> .mmx,</span>
<span class="line" id="L3619"> .slow_unaligned_mem_16,</span>
<span class="line" id="L3620"> .vzeroupper,</span>
<span class="line" id="L3621"> .x87,</span>
<span class="line" id="L3622"> }),</span>
<span class="line" id="L3623"> };</span>
<span class="line" id="L3624"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> x86_64 = CpuModel{</span>
<span class="line" id="L3625"> .name = <span class="tok-str">"x86_64"</span>,</span>
<span class="line" id="L3626"> .llvm_name = <span class="tok-str">"x86-64"</span>,</span>
<span class="line" id="L3627"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3628"> .@"64bit",</span>
<span class="line" id="L3629"> .cmov,</span>
<span class="line" id="L3630"> .cx8,</span>
<span class="line" id="L3631"> .fxsr,</span>
<span class="line" id="L3632"> .idivq_to_divl,</span>
<span class="line" id="L3633"> .macrofusion,</span>
<span class="line" id="L3634"> .mmx,</span>
<span class="line" id="L3635"> .nopl,</span>
<span class="line" id="L3636"> .slow_3ops_lea,</span>
<span class="line" id="L3637"> .slow_incdec,</span>
<span class="line" id="L3638"> .sse2,</span>
<span class="line" id="L3639"> .vzeroupper,</span>
<span class="line" id="L3640"> .x87,</span>
<span class="line" id="L3641"> }),</span>
<span class="line" id="L3642"> };</span>
<span class="line" id="L3643"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> x86_64_v2 = CpuModel{</span>
<span class="line" id="L3644"> .name = <span class="tok-str">"x86_64_v2"</span>,</span>
<span class="line" id="L3645"> .llvm_name = <span class="tok-str">"x86-64-v2"</span>,</span>
<span class="line" id="L3646"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3647"> .@"64bit",</span>
<span class="line" id="L3648"> .cmov,</span>
<span class="line" id="L3649"> .crc32,</span>
<span class="line" id="L3650"> .cx16,</span>
<span class="line" id="L3651"> .false_deps_popcnt,</span>
<span class="line" id="L3652"> .fast_15bytenop,</span>
<span class="line" id="L3653"> .fast_scalar_fsqrt,</span>
<span class="line" id="L3654"> .fast_shld_rotate,</span>
<span class="line" id="L3655"> .fxsr,</span>
<span class="line" id="L3656"> .idivq_to_divl,</span>
<span class="line" id="L3657"> .macrofusion,</span>
<span class="line" id="L3658"> .mmx,</span>
<span class="line" id="L3659"> .nopl,</span>
<span class="line" id="L3660"> .popcnt,</span>
<span class="line" id="L3661"> .sahf,</span>
<span class="line" id="L3662"> .slow_3ops_lea,</span>
<span class="line" id="L3663"> .slow_unaligned_mem_32,</span>
<span class="line" id="L3664"> .sse4_2,</span>
<span class="line" id="L3665"> .vzeroupper,</span>
<span class="line" id="L3666"> .x87,</span>
<span class="line" id="L3667"> }),</span>
<span class="line" id="L3668"> };</span>
<span class="line" id="L3669"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> x86_64_v3 = CpuModel{</span>
<span class="line" id="L3670"> .name = <span class="tok-str">"x86_64_v3"</span>,</span>
<span class="line" id="L3671"> .llvm_name = <span class="tok-str">"x86-64-v3"</span>,</span>
<span class="line" id="L3672"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3673"> .@"64bit",</span>
<span class="line" id="L3674"> .allow_light_256_bit,</span>
<span class="line" id="L3675"> .avx2,</span>
<span class="line" id="L3676"> .bmi,</span>
<span class="line" id="L3677"> .bmi2,</span>
<span class="line" id="L3678"> .cmov,</span>
<span class="line" id="L3679"> .crc32,</span>
<span class="line" id="L3680"> .cx16,</span>
<span class="line" id="L3681"> .f16c,</span>
<span class="line" id="L3682"> .false_deps_lzcnt_tzcnt,</span>
<span class="line" id="L3683"> .false_deps_popcnt,</span>
<span class="line" id="L3684"> .fast_15bytenop,</span>
<span class="line" id="L3685"> .fast_scalar_fsqrt,</span>
<span class="line" id="L3686"> .fast_shld_rotate,</span>
<span class="line" id="L3687"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L3688"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L3689"> .fma,</span>
<span class="line" id="L3690"> .fxsr,</span>
<span class="line" id="L3691"> .idivq_to_divl,</span>
<span class="line" id="L3692"> .lzcnt,</span>
<span class="line" id="L3693"> .macrofusion,</span>
<span class="line" id="L3694"> .mmx,</span>
<span class="line" id="L3695"> .movbe,</span>
<span class="line" id="L3696"> .nopl,</span>
<span class="line" id="L3697"> .popcnt,</span>
<span class="line" id="L3698"> .sahf,</span>
<span class="line" id="L3699"> .slow_3ops_lea,</span>
<span class="line" id="L3700"> .vzeroupper,</span>
<span class="line" id="L3701"> .x87,</span>
<span class="line" id="L3702"> .xsave,</span>
<span class="line" id="L3703"> }),</span>
<span class="line" id="L3704"> };</span>
<span class="line" id="L3705"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> x86_64_v4 = CpuModel{</span>
<span class="line" id="L3706"> .name = <span class="tok-str">"x86_64_v4"</span>,</span>
<span class="line" id="L3707"> .llvm_name = <span class="tok-str">"x86-64-v4"</span>,</span>
<span class="line" id="L3708"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3709"> .@"64bit",</span>
<span class="line" id="L3710"> .allow_light_256_bit,</span>
<span class="line" id="L3711"> .avx512bw,</span>
<span class="line" id="L3712"> .avx512cd,</span>
<span class="line" id="L3713"> .avx512dq,</span>
<span class="line" id="L3714"> .avx512vl,</span>
<span class="line" id="L3715"> .bmi,</span>
<span class="line" id="L3716"> .bmi2,</span>
<span class="line" id="L3717"> .cmov,</span>
<span class="line" id="L3718"> .crc32,</span>
<span class="line" id="L3719"> .cx16,</span>
<span class="line" id="L3720"> .false_deps_popcnt,</span>
<span class="line" id="L3721"> .fast_15bytenop,</span>
<span class="line" id="L3722"> .fast_gather,</span>
<span class="line" id="L3723"> .fast_scalar_fsqrt,</span>
<span class="line" id="L3724"> .fast_shld_rotate,</span>
<span class="line" id="L3725"> .fast_variable_crosslane_shuffle,</span>
<span class="line" id="L3726"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L3727"> .fast_vector_fsqrt,</span>
<span class="line" id="L3728"> .fxsr,</span>
<span class="line" id="L3729"> .idivq_to_divl,</span>
<span class="line" id="L3730"> .lzcnt,</span>
<span class="line" id="L3731"> .macrofusion,</span>
<span class="line" id="L3732"> .mmx,</span>
<span class="line" id="L3733"> .movbe,</span>
<span class="line" id="L3734"> .nopl,</span>
<span class="line" id="L3735"> .popcnt,</span>
<span class="line" id="L3736"> .prefer_256_bit,</span>
<span class="line" id="L3737"> .sahf,</span>
<span class="line" id="L3738"> .slow_3ops_lea,</span>
<span class="line" id="L3739"> .vzeroupper,</span>
<span class="line" id="L3740"> .x87,</span>
<span class="line" id="L3741"> .xsave,</span>
<span class="line" id="L3742"> }),</span>
<span class="line" id="L3743"> };</span>
<span class="line" id="L3744"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> yonah = CpuModel{</span>
<span class="line" id="L3745"> .name = <span class="tok-str">"yonah"</span>,</span>
<span class="line" id="L3746"> .llvm_name = <span class="tok-str">"yonah"</span>,</span>
<span class="line" id="L3747"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3748"> .cmov,</span>
<span class="line" id="L3749"> .cx8,</span>
<span class="line" id="L3750"> .fxsr,</span>
<span class="line" id="L3751"> .mmx,</span>
<span class="line" id="L3752"> .nopl,</span>
<span class="line" id="L3753"> .slow_unaligned_mem_16,</span>
<span class="line" id="L3754"> .sse3,</span>
<span class="line" id="L3755"> .vzeroupper,</span>
<span class="line" id="L3756"> .x87,</span>
<span class="line" id="L3757"> }),</span>
<span class="line" id="L3758"> };</span>
<span class="line" id="L3759"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> znver1 = CpuModel{</span>
<span class="line" id="L3760"> .name = <span class="tok-str">"znver1"</span>,</span>
<span class="line" id="L3761"> .llvm_name = <span class="tok-str">"znver1"</span>,</span>
<span class="line" id="L3762"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3763"> .@"64bit",</span>
<span class="line" id="L3764"> .adx,</span>
<span class="line" id="L3765"> .aes,</span>
<span class="line" id="L3766"> .allow_light_256_bit,</span>
<span class="line" id="L3767"> .avx2,</span>
<span class="line" id="L3768"> .bmi,</span>
<span class="line" id="L3769"> .bmi2,</span>
<span class="line" id="L3770"> .branchfusion,</span>
<span class="line" id="L3771"> .clflushopt,</span>
<span class="line" id="L3772"> .clzero,</span>
<span class="line" id="L3773"> .cmov,</span>
<span class="line" id="L3774"> .crc32,</span>
<span class="line" id="L3775"> .cx16,</span>
<span class="line" id="L3776"> .f16c,</span>
<span class="line" id="L3777"> .fast_15bytenop,</span>
<span class="line" id="L3778"> .fast_bextr,</span>
<span class="line" id="L3779"> .fast_lzcnt,</span>
<span class="line" id="L3780"> .fast_movbe,</span>
<span class="line" id="L3781"> .fast_scalar_fsqrt,</span>
<span class="line" id="L3782"> .fast_scalar_shift_masks,</span>
<span class="line" id="L3783"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L3784"> .fast_vector_fsqrt,</span>
<span class="line" id="L3785"> .fma,</span>
<span class="line" id="L3786"> .fsgsbase,</span>
<span class="line" id="L3787"> .fxsr,</span>
<span class="line" id="L3788"> .lzcnt,</span>
<span class="line" id="L3789"> .mmx,</span>
<span class="line" id="L3790"> .movbe,</span>
<span class="line" id="L3791"> .mwaitx,</span>
<span class="line" id="L3792"> .nopl,</span>
<span class="line" id="L3793"> .pclmul,</span>
<span class="line" id="L3794"> .popcnt,</span>
<span class="line" id="L3795"> .prfchw,</span>
<span class="line" id="L3796"> .rdrnd,</span>
<span class="line" id="L3797"> .rdseed,</span>
<span class="line" id="L3798"> .sahf,</span>
<span class="line" id="L3799"> .sbb_dep_breaking,</span>
<span class="line" id="L3800"> .sha,</span>
<span class="line" id="L3801"> .slow_shld,</span>
<span class="line" id="L3802"> .sse4a,</span>
<span class="line" id="L3803"> .vzeroupper,</span>
<span class="line" id="L3804"> .x87,</span>
<span class="line" id="L3805"> .xsavec,</span>
<span class="line" id="L3806"> .xsaveopt,</span>
<span class="line" id="L3807"> .xsaves,</span>
<span class="line" id="L3808"> }),</span>
<span class="line" id="L3809"> };</span>
<span class="line" id="L3810"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> znver2 = CpuModel{</span>
<span class="line" id="L3811"> .name = <span class="tok-str">"znver2"</span>,</span>
<span class="line" id="L3812"> .llvm_name = <span class="tok-str">"znver2"</span>,</span>
<span class="line" id="L3813"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3814"> .@"64bit",</span>
<span class="line" id="L3815"> .adx,</span>
<span class="line" id="L3816"> .aes,</span>
<span class="line" id="L3817"> .allow_light_256_bit,</span>
<span class="line" id="L3818"> .avx2,</span>
<span class="line" id="L3819"> .bmi,</span>
<span class="line" id="L3820"> .bmi2,</span>
<span class="line" id="L3821"> .branchfusion,</span>
<span class="line" id="L3822"> .clflushopt,</span>
<span class="line" id="L3823"> .clwb,</span>
<span class="line" id="L3824"> .clzero,</span>
<span class="line" id="L3825"> .cmov,</span>
<span class="line" id="L3826"> .crc32,</span>
<span class="line" id="L3827"> .cx16,</span>
<span class="line" id="L3828"> .f16c,</span>
<span class="line" id="L3829"> .fast_15bytenop,</span>
<span class="line" id="L3830"> .fast_bextr,</span>
<span class="line" id="L3831"> .fast_lzcnt,</span>
<span class="line" id="L3832"> .fast_movbe,</span>
<span class="line" id="L3833"> .fast_scalar_fsqrt,</span>
<span class="line" id="L3834"> .fast_scalar_shift_masks,</span>
<span class="line" id="L3835"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L3836"> .fast_vector_fsqrt,</span>
<span class="line" id="L3837"> .fma,</span>
<span class="line" id="L3838"> .fsgsbase,</span>
<span class="line" id="L3839"> .fxsr,</span>
<span class="line" id="L3840"> .lzcnt,</span>
<span class="line" id="L3841"> .mmx,</span>
<span class="line" id="L3842"> .movbe,</span>
<span class="line" id="L3843"> .mwaitx,</span>
<span class="line" id="L3844"> .nopl,</span>
<span class="line" id="L3845"> .pclmul,</span>
<span class="line" id="L3846"> .popcnt,</span>
<span class="line" id="L3847"> .prfchw,</span>
<span class="line" id="L3848"> .rdpid,</span>
<span class="line" id="L3849"> .rdpru,</span>
<span class="line" id="L3850"> .rdrnd,</span>
<span class="line" id="L3851"> .rdseed,</span>
<span class="line" id="L3852"> .sahf,</span>
<span class="line" id="L3853"> .sbb_dep_breaking,</span>
<span class="line" id="L3854"> .sha,</span>
<span class="line" id="L3855"> .slow_shld,</span>
<span class="line" id="L3856"> .sse4a,</span>
<span class="line" id="L3857"> .vzeroupper,</span>
<span class="line" id="L3858"> .wbnoinvd,</span>
<span class="line" id="L3859"> .x87,</span>
<span class="line" id="L3860"> .xsavec,</span>
<span class="line" id="L3861"> .xsaveopt,</span>
<span class="line" id="L3862"> .xsaves,</span>
<span class="line" id="L3863"> }),</span>
<span class="line" id="L3864"> };</span>
<span class="line" id="L3865"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> znver3 = CpuModel{</span>
<span class="line" id="L3866"> .name = <span class="tok-str">"znver3"</span>,</span>
<span class="line" id="L3867"> .llvm_name = <span class="tok-str">"znver3"</span>,</span>
<span class="line" id="L3868"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3869"> .@"64bit",</span>
<span class="line" id="L3870"> .adx,</span>
<span class="line" id="L3871"> .allow_light_256_bit,</span>
<span class="line" id="L3872"> .avx2,</span>
<span class="line" id="L3873"> .bmi,</span>
<span class="line" id="L3874"> .bmi2,</span>
<span class="line" id="L3875"> .branchfusion,</span>
<span class="line" id="L3876"> .clflushopt,</span>
<span class="line" id="L3877"> .clwb,</span>
<span class="line" id="L3878"> .clzero,</span>
<span class="line" id="L3879"> .cmov,</span>
<span class="line" id="L3880"> .crc32,</span>
<span class="line" id="L3881"> .cx16,</span>
<span class="line" id="L3882"> .f16c,</span>
<span class="line" id="L3883"> .fast_15bytenop,</span>
<span class="line" id="L3884"> .fast_bextr,</span>
<span class="line" id="L3885"> .fast_lzcnt,</span>
<span class="line" id="L3886"> .fast_movbe,</span>
<span class="line" id="L3887"> .fast_scalar_fsqrt,</span>
<span class="line" id="L3888"> .fast_scalar_shift_masks,</span>
<span class="line" id="L3889"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L3890"> .fast_vector_fsqrt,</span>
<span class="line" id="L3891"> .fma,</span>
<span class="line" id="L3892"> .fsgsbase,</span>
<span class="line" id="L3893"> .fsrm,</span>
<span class="line" id="L3894"> .fxsr,</span>
<span class="line" id="L3895"> .invpcid,</span>
<span class="line" id="L3896"> .lzcnt,</span>
<span class="line" id="L3897"> .macrofusion,</span>
<span class="line" id="L3898"> .mmx,</span>
<span class="line" id="L3899"> .movbe,</span>
<span class="line" id="L3900"> .mwaitx,</span>
<span class="line" id="L3901"> .nopl,</span>
<span class="line" id="L3902"> .pku,</span>
<span class="line" id="L3903"> .popcnt,</span>
<span class="line" id="L3904"> .prfchw,</span>
<span class="line" id="L3905"> .rdpid,</span>
<span class="line" id="L3906"> .rdpru,</span>
<span class="line" id="L3907"> .rdrnd,</span>
<span class="line" id="L3908"> .rdseed,</span>
<span class="line" id="L3909"> .sahf,</span>
<span class="line" id="L3910"> .sbb_dep_breaking,</span>
<span class="line" id="L3911"> .sha,</span>
<span class="line" id="L3912"> .slow_shld,</span>
<span class="line" id="L3913"> .sse4a,</span>
<span class="line" id="L3914"> .vaes,</span>
<span class="line" id="L3915"> .vpclmulqdq,</span>
<span class="line" id="L3916"> .vzeroupper,</span>
<span class="line" id="L3917"> .wbnoinvd,</span>
<span class="line" id="L3918"> .x87,</span>
<span class="line" id="L3919"> .xsavec,</span>
<span class="line" id="L3920"> .xsaveopt,</span>
<span class="line" id="L3921"> .xsaves,</span>
<span class="line" id="L3922"> }),</span>
<span class="line" id="L3923"> };</span>
<span class="line" id="L3924"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> znver4 = CpuModel{</span>
<span class="line" id="L3925"> .name = <span class="tok-str">"znver4"</span>,</span>
<span class="line" id="L3926"> .llvm_name = <span class="tok-str">"znver4"</span>,</span>
<span class="line" id="L3927"> .features = featureSet(&[_]Feature{</span>
<span class="line" id="L3928"> .@"64bit",</span>
<span class="line" id="L3929"> .adx,</span>
<span class="line" id="L3930"> .allow_light_256_bit,</span>
<span class="line" id="L3931"> .avx512bf16,</span>
<span class="line" id="L3932"> .avx512bitalg,</span>
<span class="line" id="L3933"> .avx512cd,</span>
<span class="line" id="L3934"> .avx512dq,</span>
<span class="line" id="L3935"> .avx512ifma,</span>
<span class="line" id="L3936"> .avx512vbmi,</span>
<span class="line" id="L3937"> .avx512vbmi2,</span>
<span class="line" id="L3938"> .avx512vl,</span>
<span class="line" id="L3939"> .avx512vnni,</span>
<span class="line" id="L3940"> .avx512vpopcntdq,</span>
<span class="line" id="L3941"> .bmi,</span>
<span class="line" id="L3942"> .bmi2,</span>
<span class="line" id="L3943"> .branchfusion,</span>
<span class="line" id="L3944"> .clflushopt,</span>
<span class="line" id="L3945"> .clwb,</span>
<span class="line" id="L3946"> .clzero,</span>
<span class="line" id="L3947"> .cmov,</span>
<span class="line" id="L3948"> .crc32,</span>
<span class="line" id="L3949"> .cx16,</span>
<span class="line" id="L3950"> .fast_15bytenop,</span>
<span class="line" id="L3951"> .fast_bextr,</span>
<span class="line" id="L3952"> .fast_lzcnt,</span>
<span class="line" id="L3953"> .fast_movbe,</span>
<span class="line" id="L3954"> .fast_scalar_fsqrt,</span>
<span class="line" id="L3955"> .fast_scalar_shift_masks,</span>
<span class="line" id="L3956"> .fast_variable_perlane_shuffle,</span>
<span class="line" id="L3957"> .fast_vector_fsqrt,</span>
<span class="line" id="L3958"> .fsgsbase,</span>
<span class="line" id="L3959"> .fsrm,</span>
<span class="line" id="L3960"> .fxsr,</span>
<span class="line" id="L3961"> .gfni,</span>
<span class="line" id="L3962"> .invpcid,</span>
<span class="line" id="L3963"> .lzcnt,</span>
<span class="line" id="L3964"> .macrofusion,</span>
<span class="line" id="L3965"> .mmx,</span>
<span class="line" id="L3966"> .movbe,</span>
<span class="line" id="L3967"> .mwaitx,</span>
<span class="line" id="L3968"> .nopl,</span>
<span class="line" id="L3969"> .pku,</span>
<span class="line" id="L3970"> .popcnt,</span>
<span class="line" id="L3971"> .prfchw,</span>
<span class="line" id="L3972"> .rdpid,</span>
<span class="line" id="L3973"> .rdpru,</span>
<span class="line" id="L3974"> .rdrnd,</span>
<span class="line" id="L3975"> .rdseed,</span>
<span class="line" id="L3976"> .sahf,</span>
<span class="line" id="L3977"> .sbb_dep_breaking,</span>
<span class="line" id="L3978"> .sha,</span>
<span class="line" id="L3979"> .shstk,</span>
<span class="line" id="L3980"> .slow_shld,</span>
<span class="line" id="L3981"> .sse4a,</span>
<span class="line" id="L3982"> .vaes,</span>
<span class="line" id="L3983"> .vpclmulqdq,</span>
<span class="line" id="L3984"> .vzeroupper,</span>
<span class="line" id="L3985"> .wbnoinvd,</span>
<span class="line" id="L3986"> .x87,</span>
<span class="line" id="L3987"> .xsavec,</span>
<span class="line" id="L3988"> .xsaveopt,</span>
<span class="line" id="L3989"> .xsaves,</span>
<span class="line" id="L3990"> }),</span>
<span class="line" id="L3991"> };</span>
<span class="line" id="L3992">};</span>
<span class="line" id="L3993"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L3"></span>
<span class="line" id="L4"><span class="tok-comment">/// Allocator that fails after N allocations, useful for making sure out of</span></span>
<span class="line" id="L5"><span class="tok-comment">/// memory conditions are handled correctly.</span></span>
<span class="line" id="L6"><span class="tok-comment">///</span></span>
<span class="line" id="L7"><span class="tok-comment">/// To use this, first initialize it and get an allocator with</span></span>
<span class="line" id="L8"><span class="tok-comment">///</span></span>
<span class="line" id="L9"><span class="tok-comment">/// `const failing_allocator = &FailingAllocator.init(<allocator>,</span></span>
<span class="line" id="L10"><span class="tok-comment">/// <fail_index>).allocator;`</span></span>
<span class="line" id="L11"><span class="tok-comment">///</span></span>
<span class="line" id="L12"><span class="tok-comment">/// Then use `failing_allocator` anywhere you would have used a</span></span>
<span class="line" id="L13"><span class="tok-comment">/// different allocator.</span></span>
<span class="line" id="L14"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> FailingAllocator = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L15"> index: <span class="tok-type">usize</span>,</span>
<span class="line" id="L16"> fail_index: <span class="tok-type">usize</span>,</span>
<span class="line" id="L17"> internal_allocator: mem.Allocator,</span>
<span class="line" id="L18"> allocated_bytes: <span class="tok-type">usize</span>,</span>
<span class="line" id="L19"> freed_bytes: <span class="tok-type">usize</span>,</span>
<span class="line" id="L20"> allocations: <span class="tok-type">usize</span>,</span>
<span class="line" id="L21"> deallocations: <span class="tok-type">usize</span>,</span>
<span class="line" id="L22"> stack_addresses: [num_stack_frames]<span class="tok-type">usize</span>,</span>
<span class="line" id="L23"> has_induced_failure: <span class="tok-type">bool</span>,</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"> <span class="tok-kw">const</span> num_stack_frames = <span class="tok-kw">if</span> (std.debug.sys_can_stack_trace) <span class="tok-number">16</span> <span class="tok-kw">else</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L26"></span>
<span class="line" id="L27"> <span class="tok-comment">/// `fail_index` is the number of successful allocations you can</span></span>
<span class="line" id="L28"> <span class="tok-comment">/// expect from this allocator. The next allocation will fail.</span></span>
<span class="line" id="L29"> <span class="tok-comment">/// For example, if this is called with `fail_index` equal to 2,</span></span>
<span class="line" id="L30"> <span class="tok-comment">/// the following test will pass:</span></span>
<span class="line" id="L31"> <span class="tok-comment">///</span></span>
<span class="line" id="L32"> <span class="tok-comment">/// var a = try failing_alloc.create(i32);</span></span>
<span class="line" id="L33"> <span class="tok-comment">/// var b = try failing_alloc.create(i32);</span></span>
<span class="line" id="L34"> <span class="tok-comment">/// testing.expectError(error.OutOfMemory, failing_alloc.create(i32));</span></span>
<span class="line" id="L35"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(internal_allocator: mem.Allocator, fail_index: <span class="tok-type">usize</span>) FailingAllocator {</span>
<span class="line" id="L36"> <span class="tok-kw">return</span> FailingAllocator{</span>
<span class="line" id="L37"> .internal_allocator = internal_allocator,</span>
<span class="line" id="L38"> .fail_index = fail_index,</span>
<span class="line" id="L39"> .index = <span class="tok-number">0</span>,</span>
<span class="line" id="L40"> .allocated_bytes = <span class="tok-number">0</span>,</span>
<span class="line" id="L41"> .freed_bytes = <span class="tok-number">0</span>,</span>
<span class="line" id="L42"> .allocations = <span class="tok-number">0</span>,</span>
<span class="line" id="L43"> .deallocations = <span class="tok-number">0</span>,</span>
<span class="line" id="L44"> .stack_addresses = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L45"> .has_induced_failure = <span class="tok-null">false</span>,</span>
<span class="line" id="L46"> };</span>
<span class="line" id="L47"> }</span>
<span class="line" id="L48"></span>
<span class="line" id="L49"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">allocator</span>(self: *FailingAllocator) mem.Allocator {</span>
<span class="line" id="L50"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L51"> .ptr = self,</span>
<span class="line" id="L52"> .vtable = &.{</span>
<span class="line" id="L53"> .alloc = alloc,</span>
<span class="line" id="L54"> .resize = resize,</span>
<span class="line" id="L55"> .free = free,</span>
<span class="line" id="L56"> },</span>
<span class="line" id="L57"> };</span>
<span class="line" id="L58"> }</span>
<span class="line" id="L59"></span>
<span class="line" id="L60"> <span class="tok-kw">fn</span> <span class="tok-fn">alloc</span>(</span>
<span class="line" id="L61"> ctx: *<span class="tok-type">anyopaque</span>,</span>
<span class="line" id="L62"> len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L63"> log2_ptr_align: <span class="tok-type">u8</span>,</span>
<span class="line" id="L64"> return_address: <span class="tok-type">usize</span>,</span>
<span class="line" id="L65"> ) ?[*]<span class="tok-type">u8</span> {</span>
<span class="line" id="L66"> <span class="tok-kw">const</span> self: *FailingAllocator = <span class="tok-builtin">@ptrCast</span>(<span class="tok-builtin">@alignCast</span>(ctx));</span>
<span class="line" id="L67"> <span class="tok-kw">if</span> (self.index == self.fail_index) {</span>
<span class="line" id="L68"> <span class="tok-kw">if</span> (!self.has_induced_failure) {</span>
<span class="line" id="L69"> <span class="tok-builtin">@memset</span>(&self.stack_addresses, <span class="tok-number">0</span>);</span>
<span class="line" id="L70"> <span class="tok-kw">var</span> stack_trace = std.builtin.StackTrace{</span>
<span class="line" id="L71"> .instruction_addresses = &self.stack_addresses,</span>
<span class="line" id="L72"> .index = <span class="tok-number">0</span>,</span>
<span class="line" id="L73"> };</span>
<span class="line" id="L74"> std.debug.captureStackTrace(return_address, &stack_trace);</span>
<span class="line" id="L75"> self.has_induced_failure = <span class="tok-null">true</span>;</span>
<span class="line" id="L76"> }</span>
<span class="line" id="L77"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L78"> }</span>
<span class="line" id="L79"> <span class="tok-kw">const</span> result = self.internal_allocator.rawAlloc(len, log2_ptr_align, return_address) <span class="tok-kw">orelse</span></span>
<span class="line" id="L80"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L81"> self.allocated_bytes += len;</span>
<span class="line" id="L82"> self.allocations += <span class="tok-number">1</span>;</span>
<span class="line" id="L83"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L84"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L85"> }</span>
<span class="line" id="L86"></span>
<span class="line" id="L87"> <span class="tok-kw">fn</span> <span class="tok-fn">resize</span>(</span>
<span class="line" id="L88"> ctx: *<span class="tok-type">anyopaque</span>,</span>
<span class="line" id="L89"> old_mem: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L90"> log2_old_align: <span class="tok-type">u8</span>,</span>
<span class="line" id="L91"> new_len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L92"> ra: <span class="tok-type">usize</span>,</span>
<span class="line" id="L93"> ) <span class="tok-type">bool</span> {</span>
<span class="line" id="L94"> <span class="tok-kw">const</span> self: *FailingAllocator = <span class="tok-builtin">@ptrCast</span>(<span class="tok-builtin">@alignCast</span>(ctx));</span>
<span class="line" id="L95"> <span class="tok-kw">if</span> (!self.internal_allocator.rawResize(old_mem, log2_old_align, new_len, ra))</span>
<span class="line" id="L96"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L97"> <span class="tok-kw">if</span> (new_len < old_mem.len) {</span>
<span class="line" id="L98"> self.freed_bytes += old_mem.len - new_len;</span>
<span class="line" id="L99"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L100"> self.allocated_bytes += new_len - old_mem.len;</span>
<span class="line" id="L101"> }</span>
<span class="line" id="L102"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L103"> }</span>
<span class="line" id="L104"></span>
<span class="line" id="L105"> <span class="tok-kw">fn</span> <span class="tok-fn">free</span>(</span>
<span class="line" id="L106"> ctx: *<span class="tok-type">anyopaque</span>,</span>
<span class="line" id="L107"> old_mem: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L108"> log2_old_align: <span class="tok-type">u8</span>,</span>
<span class="line" id="L109"> ra: <span class="tok-type">usize</span>,</span>
<span class="line" id="L110"> ) <span class="tok-type">void</span> {</span>
<span class="line" id="L111"> <span class="tok-kw">const</span> self: *FailingAllocator = <span class="tok-builtin">@ptrCast</span>(<span class="tok-builtin">@alignCast</span>(ctx));</span>
<span class="line" id="L112"> self.internal_allocator.rawFree(old_mem, log2_old_align, ra);</span>
<span class="line" id="L113"> self.deallocations += <span class="tok-number">1</span>;</span>
<span class="line" id="L114"> self.freed_bytes += old_mem.len;</span>
<span class="line" id="L115"> }</span>
<span class="line" id="L116"></span>
<span class="line" id="L117"> <span class="tok-comment">/// Only valid once `has_induced_failure == true`</span></span>
<span class="line" id="L118"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getStackTrace</span>(self: *FailingAllocator) std.builtin.StackTrace {</span>
<span class="line" id="L119"> std.debug.assert(self.has_induced_failure);</span>
<span class="line" id="L120"> <span class="tok-kw">var</span> len: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L121"> <span class="tok-kw">while</span> (len < self.stack_addresses.len <span class="tok-kw">and</span> self.stack_addresses[len] != <span class="tok-number">0</span>) {</span>
<span class="line" id="L122"> len += <span class="tok-number">1</span>;</span>
<span class="line" id="L123"> }</span>
<span class="line" id="L124"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L125"> .instruction_addresses = &self.stack_addresses,</span>
<span class="line" id="L126"> .index = len,</span>
<span class="line" id="L127"> };</span>
<span class="line" id="L128"> }</span>
<span class="line" id="L129">};</span>
<span class="line" id="L130"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! The standard memory allocation interface.</span></span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L4"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> Allocator = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L8"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L9"></span>
<span class="line" id="L10"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = <span class="tok-kw">error</span>{OutOfMemory};</span>
<span class="line" id="L11"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Log2Align = math.Log2Int(<span class="tok-type">usize</span>);</span>
<span class="line" id="L12"></span>
<span class="line" id="L13"><span class="tok-comment">// The type erased pointer to the allocator implementation</span>
</span>
<span class="line" id="L14">ptr: *<span class="tok-type">anyopaque</span>,</span>
<span class="line" id="L15">vtable: *<span class="tok-kw">const</span> VTable,</span>
<span class="line" id="L16"></span>
<span class="line" id="L17"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> VTable = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L18"> <span class="tok-comment">/// Attempt to allocate exactly `len` bytes aligned to `1 << ptr_align`.</span></span>
<span class="line" id="L19"> <span class="tok-comment">///</span></span>
<span class="line" id="L20"> <span class="tok-comment">/// `ret_addr` is optionally provided as the first return address of the</span></span>
<span class="line" id="L21"> <span class="tok-comment">/// allocation call stack. If the value is `0` it means no return address</span></span>
<span class="line" id="L22"> <span class="tok-comment">/// has been provided.</span></span>
<span class="line" id="L23"> alloc: *<span class="tok-kw">const</span> <span class="tok-kw">fn</span> (ctx: *<span class="tok-type">anyopaque</span>, len: <span class="tok-type">usize</span>, ptr_align: <span class="tok-type">u8</span>, ret_addr: <span class="tok-type">usize</span>) ?[*]<span class="tok-type">u8</span>,</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"> <span class="tok-comment">/// Attempt to expand or shrink memory in place. `buf.len` must equal the</span></span>
<span class="line" id="L26"> <span class="tok-comment">/// length requested from the most recent successful call to `alloc` or</span></span>
<span class="line" id="L27"> <span class="tok-comment">/// `resize`. `buf_align` must equal the same value that was passed as the</span></span>
<span class="line" id="L28"> <span class="tok-comment">/// `ptr_align` parameter to the original `alloc` call.</span></span>
<span class="line" id="L29"> <span class="tok-comment">///</span></span>
<span class="line" id="L30"> <span class="tok-comment">/// A result of `true` indicates the resize was successful and the</span></span>
<span class="line" id="L31"> <span class="tok-comment">/// allocation now has the same address but a size of `new_len`. `false`</span></span>
<span class="line" id="L32"> <span class="tok-comment">/// indicates the resize could not be completed without moving the</span></span>
<span class="line" id="L33"> <span class="tok-comment">/// allocation to a different address.</span></span>
<span class="line" id="L34"> <span class="tok-comment">///</span></span>
<span class="line" id="L35"> <span class="tok-comment">/// `new_len` must be greater than zero.</span></span>
<span class="line" id="L36"> <span class="tok-comment">///</span></span>
<span class="line" id="L37"> <span class="tok-comment">/// `ret_addr` is optionally provided as the first return address of the</span></span>
<span class="line" id="L38"> <span class="tok-comment">/// allocation call stack. If the value is `0` it means no return address</span></span>
<span class="line" id="L39"> <span class="tok-comment">/// has been provided.</span></span>
<span class="line" id="L40"> resize: *<span class="tok-kw">const</span> <span class="tok-kw">fn</span> (ctx: *<span class="tok-type">anyopaque</span>, buf: []<span class="tok-type">u8</span>, buf_align: <span class="tok-type">u8</span>, new_len: <span class="tok-type">usize</span>, ret_addr: <span class="tok-type">usize</span>) <span class="tok-type">bool</span>,</span>
<span class="line" id="L41"></span>
<span class="line" id="L42"> <span class="tok-comment">/// Free and invalidate a buffer.</span></span>
<span class="line" id="L43"> <span class="tok-comment">///</span></span>
<span class="line" id="L44"> <span class="tok-comment">/// `buf.len` must equal the most recent length returned by `alloc` or</span></span>
<span class="line" id="L45"> <span class="tok-comment">/// given to a successful `resize` call.</span></span>
<span class="line" id="L46"> <span class="tok-comment">///</span></span>
<span class="line" id="L47"> <span class="tok-comment">/// `buf_align` must equal the same value that was passed as the</span></span>
<span class="line" id="L48"> <span class="tok-comment">/// `ptr_align` parameter to the original `alloc` call.</span></span>
<span class="line" id="L49"> <span class="tok-comment">///</span></span>
<span class="line" id="L50"> <span class="tok-comment">/// `ret_addr` is optionally provided as the first return address of the</span></span>
<span class="line" id="L51"> <span class="tok-comment">/// allocation call stack. If the value is `0` it means no return address</span></span>
<span class="line" id="L52"> <span class="tok-comment">/// has been provided.</span></span>
<span class="line" id="L53"> free: *<span class="tok-kw">const</span> <span class="tok-kw">fn</span> (ctx: *<span class="tok-type">anyopaque</span>, buf: []<span class="tok-type">u8</span>, buf_align: <span class="tok-type">u8</span>, ret_addr: <span class="tok-type">usize</span>) <span class="tok-type">void</span>,</span>
<span class="line" id="L54">};</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">noResize</span>(</span>
<span class="line" id="L57"> self: *<span class="tok-type">anyopaque</span>,</span>
<span class="line" id="L58"> buf: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L59"> log2_buf_align: <span class="tok-type">u8</span>,</span>
<span class="line" id="L60"> new_len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L61"> ret_addr: <span class="tok-type">usize</span>,</span>
<span class="line" id="L62">) <span class="tok-type">bool</span> {</span>
<span class="line" id="L63"> _ = self;</span>
<span class="line" id="L64"> _ = buf;</span>
<span class="line" id="L65"> _ = log2_buf_align;</span>
<span class="line" id="L66"> _ = new_len;</span>
<span class="line" id="L67"> _ = ret_addr;</span>
<span class="line" id="L68"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L69">}</span>
<span class="line" id="L70"></span>
<span class="line" id="L71"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">noFree</span>(</span>
<span class="line" id="L72"> self: *<span class="tok-type">anyopaque</span>,</span>
<span class="line" id="L73"> buf: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L74"> log2_buf_align: <span class="tok-type">u8</span>,</span>
<span class="line" id="L75"> ret_addr: <span class="tok-type">usize</span>,</span>
<span class="line" id="L76">) <span class="tok-type">void</span> {</span>
<span class="line" id="L77"> _ = self;</span>
<span class="line" id="L78"> _ = buf;</span>
<span class="line" id="L79"> _ = log2_buf_align;</span>
<span class="line" id="L80"> _ = ret_addr;</span>
<span class="line" id="L81">}</span>
<span class="line" id="L82"></span>
<span class="line" id="L83"><span class="tok-comment">/// This function is not intended to be called except from within the</span></span>
<span class="line" id="L84"><span class="tok-comment">/// implementation of an Allocator</span></span>
<span class="line" id="L85"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">rawAlloc</span>(self: Allocator, len: <span class="tok-type">usize</span>, ptr_align: <span class="tok-type">u8</span>, ret_addr: <span class="tok-type">usize</span>) ?[*]<span class="tok-type">u8</span> {</span>
<span class="line" id="L86"> <span class="tok-kw">return</span> self.vtable.alloc(self.ptr, len, ptr_align, ret_addr);</span>
<span class="line" id="L87">}</span>
<span class="line" id="L88"></span>
<span class="line" id="L89"><span class="tok-comment">/// This function is not intended to be called except from within the</span></span>
<span class="line" id="L90"><span class="tok-comment">/// implementation of an Allocator</span></span>
<span class="line" id="L91"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">rawResize</span>(self: Allocator, buf: []<span class="tok-type">u8</span>, log2_buf_align: <span class="tok-type">u8</span>, new_len: <span class="tok-type">usize</span>, ret_addr: <span class="tok-type">usize</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L92"> <span class="tok-kw">return</span> self.vtable.resize(self.ptr, buf, log2_buf_align, new_len, ret_addr);</span>
<span class="line" id="L93">}</span>
<span class="line" id="L94"></span>
<span class="line" id="L95"><span class="tok-comment">/// This function is not intended to be called except from within the</span></span>
<span class="line" id="L96"><span class="tok-comment">/// implementation of an Allocator</span></span>
<span class="line" id="L97"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">rawFree</span>(self: Allocator, buf: []<span class="tok-type">u8</span>, log2_buf_align: <span class="tok-type">u8</span>, ret_addr: <span class="tok-type">usize</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L98"> <span class="tok-kw">return</span> self.vtable.free(self.ptr, buf, log2_buf_align, ret_addr);</span>
<span class="line" id="L99">}</span>
<span class="line" id="L100"></span>
<span class="line" id="L101"><span class="tok-comment">/// Returns a pointer to undefined memory.</span></span>
<span class="line" id="L102"><span class="tok-comment">/// Call `destroy` with the result to free the memory.</span></span>
<span class="line" id="L103"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">create</span>(self: Allocator, <span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>) Error!*T {</span>
<span class="line" id="L104"> <span class="tok-kw">if</span> (<span class="tok-builtin">@sizeOf</span>(T) == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(*T, <span class="tok-builtin">@ptrFromInt</span>(math.maxInt(<span class="tok-type">usize</span>)));</span>
<span class="line" id="L105"> <span class="tok-kw">const</span> ptr: *T = <span class="tok-builtin">@ptrCast</span>(<span class="tok-kw">try</span> self.allocBytesWithAlignment(<span class="tok-builtin">@alignOf</span>(T), <span class="tok-builtin">@sizeOf</span>(T), <span class="tok-builtin">@returnAddress</span>()));</span>
<span class="line" id="L106"> <span class="tok-kw">return</span> ptr;</span>
<span class="line" id="L107">}</span>
<span class="line" id="L108"></span>
<span class="line" id="L109"><span class="tok-comment">/// `ptr` should be the return value of `create`, or otherwise</span></span>
<span class="line" id="L110"><span class="tok-comment">/// have the same address and alignment property.</span></span>
<span class="line" id="L111"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">destroy</span>(self: Allocator, ptr: <span class="tok-kw">anytype</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L112"> <span class="tok-kw">const</span> info = <span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(ptr)).Pointer;</span>
<span class="line" id="L113"> <span class="tok-kw">const</span> T = info.child;</span>
<span class="line" id="L114"> <span class="tok-kw">if</span> (<span class="tok-builtin">@sizeOf</span>(T) == <span class="tok-number">0</span>) <span class="tok-kw">return</span>;</span>
<span class="line" id="L115"> <span class="tok-kw">const</span> non_const_ptr = <span class="tok-builtin">@as</span>([*]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(<span class="tok-builtin">@constCast</span>(ptr)));</span>
<span class="line" id="L116"> self.rawFree(non_const_ptr[<span class="tok-number">0</span>..<span class="tok-builtin">@sizeOf</span>(T)], log2a(info.alignment), <span class="tok-builtin">@returnAddress</span>());</span>
<span class="line" id="L117">}</span>
<span class="line" id="L118"></span>
<span class="line" id="L119"><span class="tok-comment">/// Allocates an array of `n` items of type `T` and sets all the</span></span>
<span class="line" id="L120"><span class="tok-comment">/// items to `undefined`. Depending on the Allocator</span></span>
<span class="line" id="L121"><span class="tok-comment">/// implementation, it may be required to call `free` once the</span></span>
<span class="line" id="L122"><span class="tok-comment">/// memory is no longer needed, to avoid a resource leak. If the</span></span>
<span class="line" id="L123"><span class="tok-comment">/// `Allocator` implementation is unknown, then correct code will</span></span>
<span class="line" id="L124"><span class="tok-comment">/// call `free` when done.</span></span>
<span class="line" id="L125"><span class="tok-comment">///</span></span>
<span class="line" id="L126"><span class="tok-comment">/// For allocating a single item, see `create`.</span></span>
<span class="line" id="L127"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">alloc</span>(self: Allocator, <span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, n: <span class="tok-type">usize</span>) Error![]T {</span>
<span class="line" id="L128"> <span class="tok-kw">return</span> self.allocAdvancedWithRetAddr(T, <span class="tok-null">null</span>, n, <span class="tok-builtin">@returnAddress</span>());</span>
<span class="line" id="L129">}</span>
<span class="line" id="L130"></span>
<span class="line" id="L131"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">allocWithOptions</span>(</span>
<span class="line" id="L132"> self: Allocator,</span>
<span class="line" id="L133"> <span class="tok-kw">comptime</span> Elem: <span class="tok-type">type</span>,</span>
<span class="line" id="L134"> n: <span class="tok-type">usize</span>,</span>
<span class="line" id="L135"> <span class="tok-comment">/// null means naturally aligned</span></span>
<span class="line" id="L136"> <span class="tok-kw">comptime</span> optional_alignment: ?<span class="tok-type">u29</span>,</span>
<span class="line" id="L137"> <span class="tok-kw">comptime</span> optional_sentinel: ?Elem,</span>
<span class="line" id="L138">) Error!AllocWithOptionsPayload(Elem, optional_alignment, optional_sentinel) {</span>
<span class="line" id="L139"> <span class="tok-kw">return</span> self.allocWithOptionsRetAddr(Elem, n, optional_alignment, optional_sentinel, <span class="tok-builtin">@returnAddress</span>());</span>
<span class="line" id="L140">}</span>
<span class="line" id="L141"></span>
<span class="line" id="L142"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">allocWithOptionsRetAddr</span>(</span>
<span class="line" id="L143"> self: Allocator,</span>
<span class="line" id="L144"> <span class="tok-kw">comptime</span> Elem: <span class="tok-type">type</span>,</span>
<span class="line" id="L145"> n: <span class="tok-type">usize</span>,</span>
<span class="line" id="L146"> <span class="tok-comment">/// null means naturally aligned</span></span>
<span class="line" id="L147"> <span class="tok-kw">comptime</span> optional_alignment: ?<span class="tok-type">u29</span>,</span>
<span class="line" id="L148"> <span class="tok-kw">comptime</span> optional_sentinel: ?Elem,</span>
<span class="line" id="L149"> return_address: <span class="tok-type">usize</span>,</span>
<span class="line" id="L150">) Error!AllocWithOptionsPayload(Elem, optional_alignment, optional_sentinel) {</span>
<span class="line" id="L151"> <span class="tok-kw">if</span> (optional_sentinel) |sentinel| {</span>
<span class="line" id="L152"> <span class="tok-kw">const</span> ptr = <span class="tok-kw">try</span> self.allocAdvancedWithRetAddr(Elem, optional_alignment, n + <span class="tok-number">1</span>, return_address);</span>
<span class="line" id="L153"> ptr[n] = sentinel;</span>
<span class="line" id="L154"> <span class="tok-kw">return</span> ptr[<span class="tok-number">0</span>..n :sentinel];</span>
<span class="line" id="L155"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L156"> <span class="tok-kw">return</span> self.allocAdvancedWithRetAddr(Elem, optional_alignment, n, return_address);</span>
<span class="line" id="L157"> }</span>
<span class="line" id="L158">}</span>
<span class="line" id="L159"></span>
<span class="line" id="L160"><span class="tok-kw">fn</span> <span class="tok-fn">AllocWithOptionsPayload</span>(<span class="tok-kw">comptime</span> Elem: <span class="tok-type">type</span>, <span class="tok-kw">comptime</span> alignment: ?<span class="tok-type">u29</span>, <span class="tok-kw">comptime</span> sentinel: ?Elem) <span class="tok-type">type</span> {</span>
<span class="line" id="L161"> <span class="tok-kw">if</span> (sentinel) |s| {</span>
<span class="line" id="L162"> <span class="tok-kw">return</span> [:s]<span class="tok-kw">align</span>(alignment <span class="tok-kw">orelse</span> <span class="tok-builtin">@alignOf</span>(Elem)) Elem;</span>
<span class="line" id="L163"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L164"> <span class="tok-kw">return</span> []<span class="tok-kw">align</span>(alignment <span class="tok-kw">orelse</span> <span class="tok-builtin">@alignOf</span>(Elem)) Elem;</span>
<span class="line" id="L165"> }</span>
<span class="line" id="L166">}</span>
<span class="line" id="L167"></span>
<span class="line" id="L168"><span class="tok-comment">/// Allocates an array of `n + 1` items of type `T` and sets the first `n`</span></span>
<span class="line" id="L169"><span class="tok-comment">/// items to `undefined` and the last item to `sentinel`. Depending on the</span></span>
<span class="line" id="L170"><span class="tok-comment">/// Allocator implementation, it may be required to call `free` once the</span></span>
<span class="line" id="L171"><span class="tok-comment">/// memory is no longer needed, to avoid a resource leak. If the</span></span>
<span class="line" id="L172"><span class="tok-comment">/// `Allocator` implementation is unknown, then correct code will</span></span>
<span class="line" id="L173"><span class="tok-comment">/// call `free` when done.</span></span>
<span class="line" id="L174"><span class="tok-comment">///</span></span>
<span class="line" id="L175"><span class="tok-comment">/// For allocating a single item, see `create`.</span></span>
<span class="line" id="L176"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">allocSentinel</span>(</span>
<span class="line" id="L177"> self: Allocator,</span>
<span class="line" id="L178"> <span class="tok-kw">comptime</span> Elem: <span class="tok-type">type</span>,</span>
<span class="line" id="L179"> n: <span class="tok-type">usize</span>,</span>
<span class="line" id="L180"> <span class="tok-kw">comptime</span> sentinel: Elem,</span>
<span class="line" id="L181">) Error![:sentinel]Elem {</span>
<span class="line" id="L182"> <span class="tok-kw">return</span> self.allocWithOptionsRetAddr(Elem, n, <span class="tok-null">null</span>, sentinel, <span class="tok-builtin">@returnAddress</span>());</span>
<span class="line" id="L183">}</span>
<span class="line" id="L184"></span>
<span class="line" id="L185"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">alignedAlloc</span>(</span>
<span class="line" id="L186"> self: Allocator,</span>
<span class="line" id="L187"> <span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>,</span>
<span class="line" id="L188"> <span class="tok-comment">/// null means naturally aligned</span></span>
<span class="line" id="L189"> <span class="tok-kw">comptime</span> alignment: ?<span class="tok-type">u29</span>,</span>
<span class="line" id="L190"> n: <span class="tok-type">usize</span>,</span>
<span class="line" id="L191">) Error![]<span class="tok-kw">align</span>(alignment <span class="tok-kw">orelse</span> <span class="tok-builtin">@alignOf</span>(T)) T {</span>
<span class="line" id="L192"> <span class="tok-kw">return</span> self.allocAdvancedWithRetAddr(T, alignment, n, <span class="tok-builtin">@returnAddress</span>());</span>
<span class="line" id="L193">}</span>
<span class="line" id="L194"></span>
<span class="line" id="L195"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">allocAdvancedWithRetAddr</span>(</span>
<span class="line" id="L196"> self: Allocator,</span>
<span class="line" id="L197"> <span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>,</span>
<span class="line" id="L198"> <span class="tok-comment">/// null means naturally aligned</span></span>
<span class="line" id="L199"> <span class="tok-kw">comptime</span> alignment: ?<span class="tok-type">u29</span>,</span>
<span class="line" id="L200"> n: <span class="tok-type">usize</span>,</span>
<span class="line" id="L201"> return_address: <span class="tok-type">usize</span>,</span>
<span class="line" id="L202">) Error![]<span class="tok-kw">align</span>(alignment <span class="tok-kw">orelse</span> <span class="tok-builtin">@alignOf</span>(T)) T {</span>
<span class="line" id="L203"> <span class="tok-kw">const</span> a = alignment <span class="tok-kw">orelse</span> <span class="tok-builtin">@alignOf</span>(T);</span>
<span class="line" id="L204"> <span class="tok-kw">const</span> ptr: [*]<span class="tok-kw">align</span>(a) T = <span class="tok-builtin">@ptrCast</span>(<span class="tok-kw">try</span> self.allocWithSizeAndAlignment(<span class="tok-builtin">@sizeOf</span>(T), a, n, return_address));</span>
<span class="line" id="L205"> <span class="tok-kw">return</span> ptr[<span class="tok-number">0</span>..n];</span>
<span class="line" id="L206">}</span>
<span class="line" id="L207"></span>
<span class="line" id="L208"><span class="tok-kw">fn</span> <span class="tok-fn">allocWithSizeAndAlignment</span>(self: Allocator, <span class="tok-kw">comptime</span> size: <span class="tok-type">usize</span>, <span class="tok-kw">comptime</span> alignment: <span class="tok-type">u29</span>, n: <span class="tok-type">usize</span>, return_address: <span class="tok-type">usize</span>) Error![*]<span class="tok-kw">align</span>(alignment) <span class="tok-type">u8</span> {</span>
<span class="line" id="L209"> <span class="tok-kw">const</span> byte_count = math.mul(<span class="tok-type">usize</span>, size, n) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> Error.OutOfMemory;</span>
<span class="line" id="L210"> <span class="tok-kw">return</span> self.allocBytesWithAlignment(alignment, byte_count, return_address);</span>
<span class="line" id="L211">}</span>
<span class="line" id="L212"></span>
<span class="line" id="L213"><span class="tok-kw">fn</span> <span class="tok-fn">allocBytesWithAlignment</span>(self: Allocator, <span class="tok-kw">comptime</span> alignment: <span class="tok-type">u29</span>, byte_count: <span class="tok-type">usize</span>, return_address: <span class="tok-type">usize</span>) Error![*]<span class="tok-kw">align</span>(alignment) <span class="tok-type">u8</span> {</span>
<span class="line" id="L214"> <span class="tok-comment">// The Zig Allocator interface is not intended to solve alignments beyond</span>
</span>
<span class="line" id="L215"> <span class="tok-comment">// the minimum OS page size. For these use cases, the caller must use OS</span>
</span>
<span class="line" id="L216"> <span class="tok-comment">// APIs directly.</span>
</span>
<span class="line" id="L217"> <span class="tok-kw">comptime</span> assert(alignment <= mem.page_size);</span>
<span class="line" id="L218"></span>
<span class="line" id="L219"> <span class="tok-kw">if</span> (byte_count == <span class="tok-number">0</span>) {</span>
<span class="line" id="L220"> <span class="tok-kw">const</span> ptr = <span class="tok-kw">comptime</span> std.mem.alignBackward(<span class="tok-type">usize</span>, math.maxInt(<span class="tok-type">usize</span>), alignment);</span>
<span class="line" id="L221"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>([*]<span class="tok-kw">align</span>(alignment) <span class="tok-type">u8</span>, <span class="tok-builtin">@ptrFromInt</span>(ptr));</span>
<span class="line" id="L222"> }</span>
<span class="line" id="L223"></span>
<span class="line" id="L224"> <span class="tok-kw">const</span> byte_ptr = self.rawAlloc(byte_count, log2a(alignment), return_address) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> Error.OutOfMemory;</span>
<span class="line" id="L225"> <span class="tok-comment">// TODO: https://github.com/ziglang/zig/issues/4298</span>
</span>
<span class="line" id="L226"> <span class="tok-builtin">@memset</span>(byte_ptr[<span class="tok-number">0</span>..byte_count], <span class="tok-null">undefined</span>);</span>
<span class="line" id="L227"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>([*]<span class="tok-kw">align</span>(alignment) <span class="tok-type">u8</span>, <span class="tok-builtin">@alignCast</span>(byte_ptr));</span>
<span class="line" id="L228">}</span>
<span class="line" id="L229"></span>
<span class="line" id="L230"><span class="tok-comment">/// Requests to modify the size of an allocation. It is guaranteed to not move</span></span>
<span class="line" id="L231"><span class="tok-comment">/// the pointer, however the allocator implementation may refuse the resize</span></span>
<span class="line" id="L232"><span class="tok-comment">/// request by returning `false`.</span></span>
<span class="line" id="L233"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">resize</span>(self: Allocator, old_mem: <span class="tok-kw">anytype</span>, new_n: <span class="tok-type">usize</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L234"> <span class="tok-kw">const</span> Slice = <span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(old_mem)).Pointer;</span>
<span class="line" id="L235"> <span class="tok-kw">const</span> T = Slice.child;</span>
<span class="line" id="L236"> <span class="tok-kw">if</span> (new_n == <span class="tok-number">0</span>) {</span>
<span class="line" id="L237"> self.free(old_mem);</span>
<span class="line" id="L238"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L239"> }</span>
<span class="line" id="L240"> <span class="tok-kw">if</span> (old_mem.len == <span class="tok-number">0</span>) {</span>
<span class="line" id="L241"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L242"> }</span>
<span class="line" id="L243"> <span class="tok-kw">const</span> old_byte_slice = mem.sliceAsBytes(old_mem);</span>
<span class="line" id="L244"> <span class="tok-comment">// I would like to use saturating multiplication here, but LLVM cannot lower it</span>
</span>
<span class="line" id="L245"> <span class="tok-comment">// on WebAssembly: https://github.com/ziglang/zig/issues/9660</span>
</span>
<span class="line" id="L246"> <span class="tok-comment">//const new_byte_count = new_n *| @sizeOf(T);</span>
</span>
<span class="line" id="L247"> <span class="tok-kw">const</span> new_byte_count = math.mul(<span class="tok-type">usize</span>, <span class="tok-builtin">@sizeOf</span>(T), new_n) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L248"> <span class="tok-kw">return</span> self.rawResize(old_byte_slice, log2a(Slice.alignment), new_byte_count, <span class="tok-builtin">@returnAddress</span>());</span>
<span class="line" id="L249">}</span>
<span class="line" id="L250"></span>
<span class="line" id="L251"><span class="tok-comment">/// This function requests a new byte size for an existing allocation, which</span></span>
<span class="line" id="L252"><span class="tok-comment">/// can be larger, smaller, or the same size as the old memory allocation.</span></span>
<span class="line" id="L253"><span class="tok-comment">/// If `new_n` is 0, this is the same as `free` and it always succeeds.</span></span>
<span class="line" id="L254"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">realloc</span>(self: Allocator, old_mem: <span class="tok-kw">anytype</span>, new_n: <span class="tok-type">usize</span>) t: {</span>
<span class="line" id="L255"> <span class="tok-kw">const</span> Slice = <span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(old_mem)).Pointer;</span>
<span class="line" id="L256"> <span class="tok-kw">break</span> :t Error![]<span class="tok-kw">align</span>(Slice.alignment) Slice.child;</span>
<span class="line" id="L257">} {</span>
<span class="line" id="L258"> <span class="tok-kw">return</span> self.reallocAdvanced(old_mem, new_n, <span class="tok-builtin">@returnAddress</span>());</span>
<span class="line" id="L259">}</span>
<span class="line" id="L260"></span>
<span class="line" id="L261"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reallocAdvanced</span>(</span>
<span class="line" id="L262"> self: Allocator,</span>
<span class="line" id="L263"> old_mem: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L264"> new_n: <span class="tok-type">usize</span>,</span>
<span class="line" id="L265"> return_address: <span class="tok-type">usize</span>,</span>
<span class="line" id="L266">) t: {</span>
<span class="line" id="L267"> <span class="tok-kw">const</span> Slice = <span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(old_mem)).Pointer;</span>
<span class="line" id="L268"> <span class="tok-kw">break</span> :t Error![]<span class="tok-kw">align</span>(Slice.alignment) Slice.child;</span>
<span class="line" id="L269">} {</span>
<span class="line" id="L270"> <span class="tok-kw">const</span> Slice = <span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(old_mem)).Pointer;</span>
<span class="line" id="L271"> <span class="tok-kw">const</span> T = Slice.child;</span>
<span class="line" id="L272"> <span class="tok-kw">if</span> (old_mem.len == <span class="tok-number">0</span>) {</span>
<span class="line" id="L273"> <span class="tok-kw">return</span> self.allocAdvancedWithRetAddr(T, Slice.alignment, new_n, return_address);</span>
<span class="line" id="L274"> }</span>
<span class="line" id="L275"> <span class="tok-kw">if</span> (new_n == <span class="tok-number">0</span>) {</span>
<span class="line" id="L276"> self.free(old_mem);</span>
<span class="line" id="L277"> <span class="tok-kw">const</span> ptr = <span class="tok-kw">comptime</span> std.mem.alignBackward(<span class="tok-type">usize</span>, math.maxInt(<span class="tok-type">usize</span>), Slice.alignment);</span>
<span class="line" id="L278"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>([*]<span class="tok-kw">align</span>(Slice.alignment) T, <span class="tok-builtin">@ptrFromInt</span>(ptr))[<span class="tok-number">0</span>..<span class="tok-number">0</span>];</span>
<span class="line" id="L279"> }</span>
<span class="line" id="L280"></span>
<span class="line" id="L281"> <span class="tok-kw">const</span> old_byte_slice = mem.sliceAsBytes(old_mem);</span>
<span class="line" id="L282"> <span class="tok-kw">const</span> byte_count = math.mul(<span class="tok-type">usize</span>, <span class="tok-builtin">@sizeOf</span>(T), new_n) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> Error.OutOfMemory;</span>
<span class="line" id="L283"> <span class="tok-comment">// Note: can't set shrunk memory to undefined as memory shouldn't be modified on realloc failure</span>
</span>
<span class="line" id="L284"> <span class="tok-kw">if</span> (mem.isAligned(<span class="tok-builtin">@intFromPtr</span>(old_byte_slice.ptr), Slice.alignment)) {</span>
<span class="line" id="L285"> <span class="tok-kw">if</span> (self.rawResize(old_byte_slice, log2a(Slice.alignment), byte_count, return_address)) {</span>
<span class="line" id="L286"> <span class="tok-kw">const</span> new_bytes: []<span class="tok-kw">align</span>(Slice.alignment) <span class="tok-type">u8</span> = <span class="tok-builtin">@alignCast</span>(old_byte_slice.ptr[<span class="tok-number">0</span>..byte_count]);</span>
<span class="line" id="L287"> <span class="tok-kw">return</span> mem.bytesAsSlice(T, new_bytes);</span>
<span class="line" id="L288"> }</span>
<span class="line" id="L289"> }</span>
<span class="line" id="L290"></span>
<span class="line" id="L291"> <span class="tok-kw">const</span> new_mem = self.rawAlloc(byte_count, log2a(Slice.alignment), return_address) <span class="tok-kw">orelse</span></span>
<span class="line" id="L292"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OutOfMemory;</span>
<span class="line" id="L293"> <span class="tok-kw">const</span> copy_len = <span class="tok-builtin">@min</span>(byte_count, old_byte_slice.len);</span>
<span class="line" id="L294"> <span class="tok-builtin">@memcpy</span>(new_mem[<span class="tok-number">0</span>..copy_len], old_byte_slice[<span class="tok-number">0</span>..copy_len]);</span>
<span class="line" id="L295"> <span class="tok-comment">// TODO https://github.com/ziglang/zig/issues/4298</span>
</span>
<span class="line" id="L296"> <span class="tok-builtin">@memset</span>(old_byte_slice, <span class="tok-null">undefined</span>);</span>
<span class="line" id="L297"> self.rawFree(old_byte_slice, log2a(Slice.alignment), return_address);</span>
<span class="line" id="L298"></span>
<span class="line" id="L299"> <span class="tok-kw">const</span> new_bytes: []<span class="tok-kw">align</span>(Slice.alignment) <span class="tok-type">u8</span> = <span class="tok-builtin">@alignCast</span>(new_mem[<span class="tok-number">0</span>..byte_count]);</span>
<span class="line" id="L300"> <span class="tok-kw">return</span> mem.bytesAsSlice(T, new_bytes);</span>
<span class="line" id="L301">}</span>
<span class="line" id="L302"></span>
<span class="line" id="L303"><span class="tok-comment">/// Free an array allocated with `alloc`. To free a single item,</span></span>
<span class="line" id="L304"><span class="tok-comment">/// see `destroy`.</span></span>
<span class="line" id="L305"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">free</span>(self: Allocator, memory: <span class="tok-kw">anytype</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L306"> <span class="tok-kw">const</span> Slice = <span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(memory)).Pointer;</span>
<span class="line" id="L307"> <span class="tok-kw">const</span> bytes = mem.sliceAsBytes(memory);</span>
<span class="line" id="L308"> <span class="tok-kw">const</span> bytes_len = bytes.len + <span class="tok-kw">if</span> (Slice.sentinel != <span class="tok-null">null</span>) <span class="tok-builtin">@sizeOf</span>(Slice.child) <span class="tok-kw">else</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L309"> <span class="tok-kw">if</span> (bytes_len == <span class="tok-number">0</span>) <span class="tok-kw">return</span>;</span>
<span class="line" id="L310"> <span class="tok-kw">const</span> non_const_ptr = <span class="tok-builtin">@constCast</span>(bytes.ptr);</span>
<span class="line" id="L311"> <span class="tok-comment">// TODO: https://github.com/ziglang/zig/issues/4298</span>
</span>
<span class="line" id="L312"> <span class="tok-builtin">@memset</span>(non_const_ptr[<span class="tok-number">0</span>..bytes_len], <span class="tok-null">undefined</span>);</span>
<span class="line" id="L313"> self.rawFree(non_const_ptr[<span class="tok-number">0</span>..bytes_len], log2a(Slice.alignment), <span class="tok-builtin">@returnAddress</span>());</span>
<span class="line" id="L314">}</span>
<span class="line" id="L315"></span>
<span class="line" id="L316"><span class="tok-comment">/// Copies `m` to newly allocated memory. Caller owns the memory.</span></span>
<span class="line" id="L317"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">dupe</span>(allocator: Allocator, <span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, m: []<span class="tok-kw">const</span> T) ![]T {</span>
<span class="line" id="L318"> <span class="tok-kw">const</span> new_buf = <span class="tok-kw">try</span> allocator.alloc(T, m.len);</span>
<span class="line" id="L319"> <span class="tok-builtin">@memcpy</span>(new_buf, m);</span>
<span class="line" id="L320"> <span class="tok-kw">return</span> new_buf;</span>
<span class="line" id="L321">}</span>
<span class="line" id="L322"></span>
<span class="line" id="L323"><span class="tok-comment">/// Copies `m` to newly allocated memory, with a null-terminated element. Caller owns the memory.</span></span>
<span class="line" id="L324"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">dupeZ</span>(allocator: Allocator, <span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, m: []<span class="tok-kw">const</span> T) ![:<span class="tok-number">0</span>]T {</span>
<span class="line" id="L325"> <span class="tok-kw">const</span> new_buf = <span class="tok-kw">try</span> allocator.alloc(T, m.len + <span class="tok-number">1</span>);</span>
<span class="line" id="L326"> <span class="tok-builtin">@memcpy</span>(new_buf[<span class="tok-number">0</span>..m.len], m);</span>
<span class="line" id="L327"> new_buf[m.len] = <span class="tok-number">0</span>;</span>
<span class="line" id="L328"> <span class="tok-kw">return</span> new_buf[<span class="tok-number">0</span>..m.len :<span class="tok-number">0</span>];</span>
<span class="line" id="L329">}</span>
<span class="line" id="L330"></span>
<span class="line" id="L331"><span class="tok-comment">/// TODO replace callsites with `@log2` after this proposal is implemented:</span></span>
<span class="line" id="L332"><span class="tok-comment">/// https://github.com/ziglang/zig/issues/13642</span></span>
<span class="line" id="L333"><span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">log2a</span>(x: <span class="tok-kw">anytype</span>) <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(x))) {</span>
<span class="line" id="L334"> .Int => math.Log2Int(<span class="tok-builtin">@TypeOf</span>(x)),</span>
<span class="line" id="L335"> .ComptimeInt => <span class="tok-type">comptime_int</span>,</span>
<span class="line" id="L336"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"int please"</span>),</span>
<span class="line" id="L337">} {</span>
<span class="line" id="L338"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(x))) {</span>
<span class="line" id="L339"> .Int => <span class="tok-kw">return</span> math.log2_int(<span class="tok-builtin">@TypeOf</span>(x), x),</span>
<span class="line" id="L340"> .ComptimeInt => <span class="tok-kw">return</span> math.log2(x),</span>
<span class="line" id="L341"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"bad"</span>),</span>
<span class="line" id="L342"> }</span>
<span class="line" id="L343">}</span>
<span class="line" id="L344"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/fmt/errol.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> enum3 = <span class="tok-builtin">@import</span>(<span class="tok-str">"errol/enum3.zig"</span>).enum3;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> enum3_data = <span class="tok-builtin">@import</span>(<span class="tok-str">"errol/enum3.zig"</span>).enum3_data;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> lookup_table = <span class="tok-builtin">@import</span>(<span class="tok-str">"errol/lookup.zig"</span>).lookup_table;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> HP = <span class="tok-builtin">@import</span>(<span class="tok-str">"errol/lookup.zig"</span>).HP;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L9"></span>
<span class="line" id="L10"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> FloatDecimal = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L11"> digits: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L12"> exp: <span class="tok-type">i32</span>,</span>
<span class="line" id="L13">};</span>
<span class="line" id="L14"></span>
<span class="line" id="L15"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> RoundMode = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L16"> <span class="tok-comment">// Round only the fractional portion (e.g. 1234.23 has precision 2)</span>
</span>
<span class="line" id="L17"> Decimal,</span>
<span class="line" id="L18"> <span class="tok-comment">// Round the entire whole/fractional portion (e.g. 1.23423e3 has precision 5)</span>
</span>
<span class="line" id="L19"> Scientific,</span>
<span class="line" id="L20">};</span>
<span class="line" id="L21"></span>
<span class="line" id="L22"><span class="tok-comment">/// Round a FloatDecimal as returned by errol3 to the specified fractional precision.</span></span>
<span class="line" id="L23"><span class="tok-comment">/// All digits after the specified precision should be considered invalid.</span></span>
<span class="line" id="L24"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">roundToPrecision</span>(float_decimal: *FloatDecimal, precision: <span class="tok-type">usize</span>, mode: RoundMode) <span class="tok-type">void</span> {</span>
<span class="line" id="L25"> <span class="tok-comment">// The round digit refers to the index which we should look at to determine</span>
</span>
<span class="line" id="L26"> <span class="tok-comment">// whether we need to round to match the specified precision.</span>
</span>
<span class="line" id="L27"> <span class="tok-kw">var</span> round_digit: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"> <span class="tok-kw">switch</span> (mode) {</span>
<span class="line" id="L30"> RoundMode.Decimal => {</span>
<span class="line" id="L31"> <span class="tok-kw">if</span> (float_decimal.exp >= <span class="tok-number">0</span>) {</span>
<span class="line" id="L32"> round_digit = precision + <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(float_decimal.exp));</span>
<span class="line" id="L33"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L34"> <span class="tok-comment">// if a small negative exp, then adjust we need to offset by the number</span>
</span>
<span class="line" id="L35"> <span class="tok-comment">// of leading zeros that will occur.</span>
</span>
<span class="line" id="L36"> <span class="tok-kw">const</span> min_exp_required = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(-float_decimal.exp));</span>
<span class="line" id="L37"> <span class="tok-kw">if</span> (precision > min_exp_required) {</span>
<span class="line" id="L38"> round_digit = precision - min_exp_required;</span>
<span class="line" id="L39"> }</span>
<span class="line" id="L40"> }</span>
<span class="line" id="L41"> },</span>
<span class="line" id="L42"> RoundMode.Scientific => {</span>
<span class="line" id="L43"> round_digit = <span class="tok-number">1</span> + precision;</span>
<span class="line" id="L44"> },</span>
<span class="line" id="L45"> }</span>
<span class="line" id="L46"></span>
<span class="line" id="L47"> <span class="tok-comment">// It suffices to look at just this digit. We don't round and propagate say 0.04999 to 0.05</span>
</span>
<span class="line" id="L48"> <span class="tok-comment">// first, and then to 0.1 in the case of a {.1} single precision.</span>
</span>
<span class="line" id="L49"></span>
<span class="line" id="L50"> <span class="tok-comment">// Find the digit which will signify the round point and start rounding backwards.</span>
</span>
<span class="line" id="L51"> <span class="tok-kw">if</span> (round_digit < float_decimal.digits.len <span class="tok-kw">and</span> float_decimal.digits[round_digit] - <span class="tok-str">'0'</span> >= <span class="tok-number">5</span>) {</span>
<span class="line" id="L52"> assert(round_digit >= <span class="tok-number">0</span>);</span>
<span class="line" id="L53"></span>
<span class="line" id="L54"> <span class="tok-kw">var</span> i = round_digit;</span>
<span class="line" id="L55"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L56"> <span class="tok-kw">if</span> (i == <span class="tok-number">0</span>) {</span>
<span class="line" id="L57"> <span class="tok-comment">// Rounded all the way past the start. This was of the form 9.999...</span>
</span>
<span class="line" id="L58"> <span class="tok-comment">// Slot the new digit in place and increase the exponent.</span>
</span>
<span class="line" id="L59"> float_decimal.exp += <span class="tok-number">1</span>;</span>
<span class="line" id="L60"></span>
<span class="line" id="L61"> <span class="tok-comment">// Re-size the buffer to use the reserved leading byte.</span>
</span>
<span class="line" id="L62"> <span class="tok-kw">const</span> one_before = <span class="tok-builtin">@as</span>([*]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-builtin">@intFromPtr</span>(&float_decimal.digits[<span class="tok-number">0</span>]) - <span class="tok-number">1</span>));</span>
<span class="line" id="L63"> float_decimal.digits = one_before[<span class="tok-number">0</span> .. float_decimal.digits.len + <span class="tok-number">1</span>];</span>
<span class="line" id="L64"> float_decimal.digits[<span class="tok-number">0</span>] = <span class="tok-str">'1'</span>;</span>
<span class="line" id="L65"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L66"> }</span>
<span class="line" id="L67"></span>
<span class="line" id="L68"> i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L69"></span>
<span class="line" id="L70"> <span class="tok-kw">const</span> new_value = (float_decimal.digits[i] - <span class="tok-str">'0'</span> + <span class="tok-number">1</span>) % <span class="tok-number">10</span>;</span>
<span class="line" id="L71"> float_decimal.digits[i] = new_value + <span class="tok-str">'0'</span>;</span>
<span class="line" id="L72"></span>
<span class="line" id="L73"> <span class="tok-comment">// must continue rounding until non-9</span>
</span>
<span class="line" id="L74"> <span class="tok-kw">if</span> (new_value != <span class="tok-number">0</span>) {</span>
<span class="line" id="L75"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L76"> }</span>
<span class="line" id="L77"> }</span>
<span class="line" id="L78"> }</span>
<span class="line" id="L79">}</span>
<span class="line" id="L80"></span>
<span class="line" id="L81"><span class="tok-comment">/// Corrected Errol3 double to ASCII conversion.</span></span>
<span class="line" id="L82"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">errol3</span>(value: <span class="tok-type">f64</span>, buffer: []<span class="tok-type">u8</span>) FloatDecimal {</span>
<span class="line" id="L83"> <span class="tok-kw">const</span> bits = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@bitCast</span>(value));</span>
<span class="line" id="L84"> <span class="tok-kw">const</span> i = tableLowerBound(bits);</span>
<span class="line" id="L85"> <span class="tok-kw">if</span> (i < enum3.len <span class="tok-kw">and</span> enum3[i] == bits) {</span>
<span class="line" id="L86"> <span class="tok-kw">const</span> data = enum3_data[i];</span>
<span class="line" id="L87"> <span class="tok-kw">const</span> digits = buffer[<span class="tok-number">1</span>..][<span class="tok-number">0</span>..data.str.len];</span>
<span class="line" id="L88"> <span class="tok-builtin">@memcpy</span>(digits, data.str);</span>
<span class="line" id="L89"> <span class="tok-kw">return</span> FloatDecimal{</span>
<span class="line" id="L90"> .digits = digits,</span>
<span class="line" id="L91"> .exp = data.exp,</span>
<span class="line" id="L92"> };</span>
<span class="line" id="L93"> }</span>
<span class="line" id="L94"></span>
<span class="line" id="L95"> <span class="tok-comment">// We generate digits starting at index 1. If rounding a buffer later then it may be</span>
</span>
<span class="line" id="L96"> <span class="tok-comment">// required to generate a preceding digit in some cases (9.999) in which case we use</span>
</span>
<span class="line" id="L97"> <span class="tok-comment">// the 0-index for this extra digit.</span>
</span>
<span class="line" id="L98"> <span class="tok-kw">return</span> errol3u(value, buffer[<span class="tok-number">1</span>..]);</span>
<span class="line" id="L99">}</span>
<span class="line" id="L100"></span>
<span class="line" id="L101"><span class="tok-comment">/// Uncorrected Errol3 double to ASCII conversion.</span></span>
<span class="line" id="L102"><span class="tok-kw">fn</span> <span class="tok-fn">errol3u</span>(val: <span class="tok-type">f64</span>, buffer: []<span class="tok-type">u8</span>) FloatDecimal {</span>
<span class="line" id="L103"> <span class="tok-comment">// check if in integer or fixed range</span>
</span>
<span class="line" id="L104"> <span class="tok-kw">if</span> (val > <span class="tok-number">9.007199254740992e15</span> <span class="tok-kw">and</span> val < <span class="tok-number">3.40282366920938e+38</span>) {</span>
<span class="line" id="L105"> <span class="tok-kw">return</span> errolInt(val, buffer);</span>
<span class="line" id="L106"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (val >= <span class="tok-number">16.0</span> <span class="tok-kw">and</span> val < <span class="tok-number">9.007199254740992e15</span>) {</span>
<span class="line" id="L107"> <span class="tok-kw">return</span> errolFixed(val, buffer);</span>
<span class="line" id="L108"> }</span>
<span class="line" id="L109"> <span class="tok-kw">return</span> errolSlow(val, buffer);</span>
<span class="line" id="L110">}</span>
<span class="line" id="L111"></span>
<span class="line" id="L112"><span class="tok-kw">fn</span> <span class="tok-fn">errolSlow</span>(val: <span class="tok-type">f64</span>, buffer: []<span class="tok-type">u8</span>) FloatDecimal {</span>
<span class="line" id="L113"> <span class="tok-comment">// normalize the midpoint</span>
</span>
<span class="line" id="L114"></span>
<span class="line" id="L115"> <span class="tok-kw">const</span> e = math.frexp(val).exponent;</span>
<span class="line" id="L116"> <span class="tok-kw">var</span> exp = <span class="tok-builtin">@as</span>(<span class="tok-type">i16</span>, <span class="tok-builtin">@intFromFloat</span>(<span class="tok-builtin">@floor</span>(<span class="tok-number">307</span> + <span class="tok-builtin">@as</span>(<span class="tok-type">f64</span>, <span class="tok-builtin">@floatFromInt</span>(e)) * <span class="tok-number">0.30103</span>)));</span>
<span class="line" id="L117"> <span class="tok-kw">if</span> (exp < <span class="tok-number">20</span>) {</span>
<span class="line" id="L118"> exp = <span class="tok-number">20</span>;</span>
<span class="line" id="L119"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(exp)) >= lookup_table.len) {</span>
<span class="line" id="L120"> exp = <span class="tok-builtin">@as</span>(<span class="tok-type">i16</span>, <span class="tok-builtin">@intCast</span>(lookup_table.len - <span class="tok-number">1</span>));</span>
<span class="line" id="L121"> }</span>
<span class="line" id="L122"></span>
<span class="line" id="L123"> <span class="tok-kw">var</span> mid = lookup_table[<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(exp))];</span>
<span class="line" id="L124"> mid = hpProd(mid, val);</span>
<span class="line" id="L125"> <span class="tok-kw">const</span> lten = lookup_table[<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(exp))].val;</span>
<span class="line" id="L126"></span>
<span class="line" id="L127"> exp -= <span class="tok-number">307</span>;</span>
<span class="line" id="L128"></span>
<span class="line" id="L129"> <span class="tok-kw">var</span> ten: <span class="tok-type">f64</span> = <span class="tok-number">1.0</span>;</span>
<span class="line" id="L130"></span>
<span class="line" id="L131"> <span class="tok-kw">while</span> (mid.val > <span class="tok-number">10.0</span> <span class="tok-kw">or</span> (mid.val == <span class="tok-number">10.0</span> <span class="tok-kw">and</span> mid.off >= <span class="tok-number">0.0</span>)) {</span>
<span class="line" id="L132"> exp += <span class="tok-number">1</span>;</span>
<span class="line" id="L133"> hpDiv10(&mid);</span>
<span class="line" id="L134"> ten /= <span class="tok-number">10.0</span>;</span>
<span class="line" id="L135"> }</span>
<span class="line" id="L136"></span>
<span class="line" id="L137"> <span class="tok-kw">while</span> (mid.val < <span class="tok-number">1.0</span> <span class="tok-kw">or</span> (mid.val == <span class="tok-number">1.0</span> <span class="tok-kw">and</span> mid.off < <span class="tok-number">0.0</span>)) {</span>
<span class="line" id="L138"> exp -= <span class="tok-number">1</span>;</span>
<span class="line" id="L139"> hpMul10(&mid);</span>
<span class="line" id="L140"> ten *= <span class="tok-number">10.0</span>;</span>
<span class="line" id="L141"> }</span>
<span class="line" id="L142"></span>
<span class="line" id="L143"> <span class="tok-comment">// compute boundaries</span>
</span>
<span class="line" id="L144"> <span class="tok-kw">var</span> high = HP{</span>
<span class="line" id="L145"> .val = mid.val,</span>
<span class="line" id="L146"> .off = mid.off + (fpnext(val) - val) * lten * ten / <span class="tok-number">2.0</span>,</span>
<span class="line" id="L147"> };</span>
<span class="line" id="L148"> <span class="tok-kw">var</span> low = HP{</span>
<span class="line" id="L149"> .val = mid.val,</span>
<span class="line" id="L150"> .off = mid.off + (fpprev(val) - val) * lten * ten / <span class="tok-number">2.0</span>,</span>
<span class="line" id="L151"> };</span>
<span class="line" id="L152"></span>
<span class="line" id="L153"> hpNormalize(&high);</span>
<span class="line" id="L154"> hpNormalize(&low);</span>
<span class="line" id="L155"></span>
<span class="line" id="L156"> <span class="tok-comment">// normalized boundaries</span>
</span>
<span class="line" id="L157"></span>
<span class="line" id="L158"> <span class="tok-kw">while</span> (high.val > <span class="tok-number">10.0</span> <span class="tok-kw">or</span> (high.val == <span class="tok-number">10.0</span> <span class="tok-kw">and</span> high.off >= <span class="tok-number">0.0</span>)) {</span>
<span class="line" id="L159"> exp += <span class="tok-number">1</span>;</span>
<span class="line" id="L160"> hpDiv10(&high);</span>
<span class="line" id="L161"> hpDiv10(&low);</span>
<span class="line" id="L162"> }</span>
<span class="line" id="L163"></span>
<span class="line" id="L164"> <span class="tok-kw">while</span> (high.val < <span class="tok-number">1.0</span> <span class="tok-kw">or</span> (high.val == <span class="tok-number">1.0</span> <span class="tok-kw">and</span> high.off < <span class="tok-number">0.0</span>)) {</span>
<span class="line" id="L165"> exp -= <span class="tok-number">1</span>;</span>
<span class="line" id="L166"> hpMul10(&high);</span>
<span class="line" id="L167"> hpMul10(&low);</span>
<span class="line" id="L168"> }</span>
<span class="line" id="L169"></span>
<span class="line" id="L170"> <span class="tok-comment">// digit generation</span>
</span>
<span class="line" id="L171"> <span class="tok-kw">var</span> buf_index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L172"> <span class="tok-kw">const</span> bound = buffer.len - <span class="tok-number">1</span>;</span>
<span class="line" id="L173"> <span class="tok-kw">while</span> (buf_index < bound) {</span>
<span class="line" id="L174"> <span class="tok-kw">var</span> hdig = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intFromFloat</span>(<span class="tok-builtin">@floor</span>(high.val)));</span>
<span class="line" id="L175"> <span class="tok-kw">if</span> ((high.val == <span class="tok-builtin">@as</span>(<span class="tok-type">f64</span>, <span class="tok-builtin">@floatFromInt</span>(hdig))) <span class="tok-kw">and</span> (high.off < <span class="tok-number">0</span>)) hdig -= <span class="tok-number">1</span>;</span>
<span class="line" id="L176"></span>
<span class="line" id="L177"> <span class="tok-kw">var</span> ldig = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intFromFloat</span>(<span class="tok-builtin">@floor</span>(low.val)));</span>
<span class="line" id="L178"> <span class="tok-kw">if</span> ((low.val == <span class="tok-builtin">@as</span>(<span class="tok-type">f64</span>, <span class="tok-builtin">@floatFromInt</span>(ldig))) <span class="tok-kw">and</span> (low.off < <span class="tok-number">0</span>)) ldig -= <span class="tok-number">1</span>;</span>
<span class="line" id="L179"></span>
<span class="line" id="L180"> <span class="tok-kw">if</span> (ldig != hdig) <span class="tok-kw">break</span>;</span>
<span class="line" id="L181"></span>
<span class="line" id="L182"> buffer[buf_index] = hdig + <span class="tok-str">'0'</span>;</span>
<span class="line" id="L183"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L184"> high.val -= <span class="tok-builtin">@as</span>(<span class="tok-type">f64</span>, <span class="tok-builtin">@floatFromInt</span>(hdig));</span>
<span class="line" id="L185"> low.val -= <span class="tok-builtin">@as</span>(<span class="tok-type">f64</span>, <span class="tok-builtin">@floatFromInt</span>(ldig));</span>
<span class="line" id="L186"> hpMul10(&high);</span>
<span class="line" id="L187"> hpMul10(&low);</span>
<span class="line" id="L188"> }</span>
<span class="line" id="L189"></span>
<span class="line" id="L190"> <span class="tok-kw">const</span> tmp = (high.val + low.val) / <span class="tok-number">2.0</span>;</span>
<span class="line" id="L191"> <span class="tok-kw">var</span> mdig = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intFromFloat</span>(<span class="tok-builtin">@floor</span>(tmp + <span class="tok-number">0.5</span>)));</span>
<span class="line" id="L192"> <span class="tok-kw">if</span> ((<span class="tok-builtin">@as</span>(<span class="tok-type">f64</span>, <span class="tok-builtin">@floatFromInt</span>(mdig)) - tmp) == <span class="tok-number">0.5</span> <span class="tok-kw">and</span> (mdig & <span class="tok-number">0x1</span>) != <span class="tok-number">0</span>) mdig -= <span class="tok-number">1</span>;</span>
<span class="line" id="L193"></span>
<span class="line" id="L194"> buffer[buf_index] = mdig + <span class="tok-str">'0'</span>;</span>
<span class="line" id="L195"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L196"></span>
<span class="line" id="L197"> <span class="tok-kw">return</span> FloatDecimal{</span>
<span class="line" id="L198"> .digits = buffer[<span class="tok-number">0</span>..buf_index],</span>
<span class="line" id="L199"> .exp = exp,</span>
<span class="line" id="L200"> };</span>
<span class="line" id="L201">}</span>
<span class="line" id="L202"></span>
<span class="line" id="L203"><span class="tok-kw">fn</span> <span class="tok-fn">tableLowerBound</span>(k: <span class="tok-type">u64</span>) <span class="tok-type">usize</span> {</span>
<span class="line" id="L204"> <span class="tok-kw">var</span> i = enum3.len;</span>
<span class="line" id="L205"> <span class="tok-kw">var</span> j: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L206"></span>
<span class="line" id="L207"> <span class="tok-kw">while</span> (j < enum3.len) {</span>
<span class="line" id="L208"> <span class="tok-kw">if</span> (enum3[j] < k) {</span>
<span class="line" id="L209"> j = <span class="tok-number">2</span> * j + <span class="tok-number">2</span>;</span>
<span class="line" id="L210"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L211"> i = j;</span>
<span class="line" id="L212"> j = <span class="tok-number">2</span> * j + <span class="tok-number">1</span>;</span>
<span class="line" id="L213"> }</span>
<span class="line" id="L214"> }</span>
<span class="line" id="L215"></span>
<span class="line" id="L216"> <span class="tok-kw">return</span> i;</span>
<span class="line" id="L217">}</span>
<span class="line" id="L218"></span>
<span class="line" id="L219"><span class="tok-comment">/// Compute the product of an HP number and a double.</span></span>
<span class="line" id="L220"><span class="tok-comment">/// @in: The HP number.</span></span>
<span class="line" id="L221"><span class="tok-comment">/// @val: The double.</span></span>
<span class="line" id="L222"><span class="tok-comment">/// &returns: The HP number.</span></span>
<span class="line" id="L223"><span class="tok-kw">fn</span> <span class="tok-fn">hpProd</span>(in: HP, val: <span class="tok-type">f64</span>) HP {</span>
<span class="line" id="L224"> <span class="tok-kw">var</span> hi: <span class="tok-type">f64</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L225"> <span class="tok-kw">var</span> lo: <span class="tok-type">f64</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L226"> split(in.val, &hi, &lo);</span>
<span class="line" id="L227"></span>
<span class="line" id="L228"> <span class="tok-kw">var</span> hi2: <span class="tok-type">f64</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L229"> <span class="tok-kw">var</span> lo2: <span class="tok-type">f64</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L230"> split(val, &hi2, &lo2);</span>
<span class="line" id="L231"></span>
<span class="line" id="L232"> <span class="tok-kw">const</span> p = in.val * val;</span>
<span class="line" id="L233"> <span class="tok-kw">const</span> e = ((hi * hi2 - p) + lo * hi2 + hi * lo2) + lo * lo2;</span>
<span class="line" id="L234"></span>
<span class="line" id="L235"> <span class="tok-kw">return</span> HP{</span>
<span class="line" id="L236"> .val = p,</span>
<span class="line" id="L237"> .off = in.off * val + e,</span>
<span class="line" id="L238"> };</span>
<span class="line" id="L239">}</span>
<span class="line" id="L240"></span>
<span class="line" id="L241"><span class="tok-comment">/// Split a double into two halves.</span></span>
<span class="line" id="L242"><span class="tok-comment">/// @val: The double.</span></span>
<span class="line" id="L243"><span class="tok-comment">/// @hi: The high bits.</span></span>
<span class="line" id="L244"><span class="tok-comment">/// @lo: The low bits.</span></span>
<span class="line" id="L245"><span class="tok-kw">fn</span> <span class="tok-fn">split</span>(val: <span class="tok-type">f64</span>, hi: *<span class="tok-type">f64</span>, lo: *<span class="tok-type">f64</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L246"> hi.* = gethi(val);</span>
<span class="line" id="L247"> lo.* = val - hi.*;</span>
<span class="line" id="L248">}</span>
<span class="line" id="L249"></span>
<span class="line" id="L250"><span class="tok-kw">fn</span> <span class="tok-fn">gethi</span>(in: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L251"> <span class="tok-kw">const</span> bits = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@bitCast</span>(in));</span>
<span class="line" id="L252"> <span class="tok-kw">const</span> new_bits = bits & <span class="tok-number">0xFFFFFFFFF8000000</span>;</span>
<span class="line" id="L253"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">f64</span>, <span class="tok-builtin">@bitCast</span>(new_bits));</span>
<span class="line" id="L254">}</span>
<span class="line" id="L255"></span>
<span class="line" id="L256"><span class="tok-comment">/// Normalize the number by factoring in the error.</span></span>
<span class="line" id="L257"><span class="tok-comment">/// @hp: The float pair.</span></span>
<span class="line" id="L258"><span class="tok-kw">fn</span> <span class="tok-fn">hpNormalize</span>(hp: *HP) <span class="tok-type">void</span> {</span>
<span class="line" id="L259"> <span class="tok-kw">const</span> val = hp.val;</span>
<span class="line" id="L260"> hp.val += hp.off;</span>
<span class="line" id="L261"> hp.off += val - hp.val;</span>
<span class="line" id="L262">}</span>
<span class="line" id="L263"></span>
<span class="line" id="L264"><span class="tok-comment">/// Divide the high-precision number by ten.</span></span>
<span class="line" id="L265"><span class="tok-comment">/// @hp: The high-precision number</span></span>
<span class="line" id="L266"><span class="tok-kw">fn</span> <span class="tok-fn">hpDiv10</span>(hp: *HP) <span class="tok-type">void</span> {</span>
<span class="line" id="L267"> <span class="tok-kw">var</span> val = hp.val;</span>
<span class="line" id="L268"></span>
<span class="line" id="L269"> hp.val /= <span class="tok-number">10.0</span>;</span>
<span class="line" id="L270"> hp.off /= <span class="tok-number">10.0</span>;</span>
<span class="line" id="L271"></span>
<span class="line" id="L272"> val -= hp.val * <span class="tok-number">8.0</span>;</span>
<span class="line" id="L273"> val -= hp.val * <span class="tok-number">2.0</span>;</span>
<span class="line" id="L274"></span>
<span class="line" id="L275"> hp.off += val / <span class="tok-number">10.0</span>;</span>
<span class="line" id="L276"></span>
<span class="line" id="L277"> hpNormalize(hp);</span>
<span class="line" id="L278">}</span>
<span class="line" id="L279"></span>
<span class="line" id="L280"><span class="tok-comment">/// Multiply the high-precision number by ten.</span></span>
<span class="line" id="L281"><span class="tok-comment">/// @hp: The high-precision number</span></span>
<span class="line" id="L282"><span class="tok-kw">fn</span> <span class="tok-fn">hpMul10</span>(hp: *HP) <span class="tok-type">void</span> {</span>
<span class="line" id="L283"> <span class="tok-kw">const</span> val = hp.val;</span>
<span class="line" id="L284"></span>
<span class="line" id="L285"> hp.val *= <span class="tok-number">10.0</span>;</span>
<span class="line" id="L286"> hp.off *= <span class="tok-number">10.0</span>;</span>
<span class="line" id="L287"></span>
<span class="line" id="L288"> <span class="tok-kw">var</span> off = hp.val;</span>
<span class="line" id="L289"> off -= val * <span class="tok-number">8.0</span>;</span>
<span class="line" id="L290"> off -= val * <span class="tok-number">2.0</span>;</span>
<span class="line" id="L291"></span>
<span class="line" id="L292"> hp.off -= off;</span>
<span class="line" id="L293"></span>
<span class="line" id="L294"> hpNormalize(hp);</span>
<span class="line" id="L295">}</span>
<span class="line" id="L296"></span>
<span class="line" id="L297"><span class="tok-comment">/// Integer conversion algorithm, guaranteed correct, optimal, and best.</span></span>
<span class="line" id="L298"><span class="tok-comment">/// @val: The val.</span></span>
<span class="line" id="L299"><span class="tok-comment">/// @buf: The output buffer.</span></span>
<span class="line" id="L300"><span class="tok-comment">/// &return: The exponent.</span></span>
<span class="line" id="L301"><span class="tok-kw">fn</span> <span class="tok-fn">errolInt</span>(val: <span class="tok-type">f64</span>, buffer: []<span class="tok-type">u8</span>) FloatDecimal {</span>
<span class="line" id="L302"> <span class="tok-kw">const</span> pow19 = <span class="tok-builtin">@as</span>(<span class="tok-type">u128</span>, <span class="tok-number">1e19</span>);</span>
<span class="line" id="L303"></span>
<span class="line" id="L304"> assert((val > <span class="tok-number">9.007199254740992e15</span>) <span class="tok-kw">and</span> val < (<span class="tok-number">3.40282366920938e38</span>));</span>
<span class="line" id="L305"></span>
<span class="line" id="L306"> <span class="tok-kw">var</span> mid = <span class="tok-builtin">@as</span>(<span class="tok-type">u128</span>, <span class="tok-builtin">@intFromFloat</span>(val));</span>
<span class="line" id="L307"> <span class="tok-kw">var</span> low: <span class="tok-type">u128</span> = mid - fpeint((fpnext(val) - val) / <span class="tok-number">2.0</span>);</span>
<span class="line" id="L308"> <span class="tok-kw">var</span> high: <span class="tok-type">u128</span> = mid + fpeint((val - fpprev(val)) / <span class="tok-number">2.0</span>);</span>
<span class="line" id="L309"></span>
<span class="line" id="L310"> <span class="tok-kw">if</span> (<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@bitCast</span>(val)) & <span class="tok-number">0x1</span> != <span class="tok-number">0</span>) {</span>
<span class="line" id="L311"> high -= <span class="tok-number">1</span>;</span>
<span class="line" id="L312"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L313"> low -= <span class="tok-number">1</span>;</span>
<span class="line" id="L314"> }</span>
<span class="line" id="L315"></span>
<span class="line" id="L316"> <span class="tok-kw">var</span> l64 = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@intCast</span>(low % pow19));</span>
<span class="line" id="L317"> <span class="tok-kw">const</span> lf = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@intCast</span>((low / pow19) % pow19));</span>
<span class="line" id="L318"></span>
<span class="line" id="L319"> <span class="tok-kw">var</span> h64 = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@intCast</span>(high % pow19));</span>
<span class="line" id="L320"> <span class="tok-kw">const</span> hf = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@intCast</span>((high / pow19) % pow19));</span>
<span class="line" id="L321"></span>
<span class="line" id="L322"> <span class="tok-kw">if</span> (lf != hf) {</span>
<span class="line" id="L323"> l64 = lf;</span>
<span class="line" id="L324"> h64 = hf;</span>
<span class="line" id="L325"> mid = mid / (pow19 / <span class="tok-number">10</span>);</span>
<span class="line" id="L326"> }</span>
<span class="line" id="L327"></span>
<span class="line" id="L328"> <span class="tok-kw">var</span> mi: <span class="tok-type">i32</span> = mismatch10(l64, h64);</span>
<span class="line" id="L329"> <span class="tok-kw">var</span> x: <span class="tok-type">u64</span> = <span class="tok-number">1</span>;</span>
<span class="line" id="L330"> {</span>
<span class="line" id="L331"> <span class="tok-kw">var</span> i: <span class="tok-type">i32</span> = <span class="tok-builtin">@intFromBool</span>(lf == hf);</span>
<span class="line" id="L332"> <span class="tok-kw">while</span> (i < mi) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L333"> x *= <span class="tok-number">10</span>;</span>
<span class="line" id="L334"> }</span>
<span class="line" id="L335"> }</span>
<span class="line" id="L336"> <span class="tok-kw">const</span> m64 = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@truncate</span>(<span class="tok-builtin">@divTrunc</span>(mid, x)));</span>
<span class="line" id="L337"></span>
<span class="line" id="L338"> <span class="tok-kw">if</span> (lf != hf) mi += <span class="tok-number">19</span>;</span>
<span class="line" id="L339"></span>
<span class="line" id="L340"> <span class="tok-kw">var</span> buf_index = u64toa(m64, buffer) - <span class="tok-number">1</span>;</span>
<span class="line" id="L341"></span>
<span class="line" id="L342"> <span class="tok-kw">if</span> (mi != <span class="tok-number">0</span>) {</span>
<span class="line" id="L343"> <span class="tok-kw">const</span> round_up = buffer[buf_index] >= <span class="tok-str">'5'</span>;</span>
<span class="line" id="L344"> <span class="tok-kw">if</span> (buf_index == <span class="tok-number">0</span> <span class="tok-kw">or</span> (round_up <span class="tok-kw">and</span> buffer[buf_index - <span class="tok-number">1</span>] == <span class="tok-str">'9'</span>)) <span class="tok-kw">return</span> errolSlow(val, buffer);</span>
<span class="line" id="L345"> buffer[buf_index - <span class="tok-number">1</span>] += <span class="tok-builtin">@intFromBool</span>(round_up);</span>
<span class="line" id="L346"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L347"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L348"> }</span>
<span class="line" id="L349"></span>
<span class="line" id="L350"> <span class="tok-kw">return</span> FloatDecimal{</span>
<span class="line" id="L351"> .digits = buffer[<span class="tok-number">0</span>..buf_index],</span>
<span class="line" id="L352"> .exp = <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(buf_index)) + mi,</span>
<span class="line" id="L353"> };</span>
<span class="line" id="L354">}</span>
<span class="line" id="L355"></span>
<span class="line" id="L356"><span class="tok-comment">/// Fixed point conversion algorithm, guaranteed correct, optimal, and best.</span></span>
<span class="line" id="L357"><span class="tok-comment">/// @val: The val.</span></span>
<span class="line" id="L358"><span class="tok-comment">/// @buf: The output buffer.</span></span>
<span class="line" id="L359"><span class="tok-comment">/// &return: The exponent.</span></span>
<span class="line" id="L360"><span class="tok-kw">fn</span> <span class="tok-fn">errolFixed</span>(val: <span class="tok-type">f64</span>, buffer: []<span class="tok-type">u8</span>) FloatDecimal {</span>
<span class="line" id="L361"> assert((val >= <span class="tok-number">16.0</span>) <span class="tok-kw">and</span> (val < <span class="tok-number">9.007199254740992e15</span>));</span>
<span class="line" id="L362"></span>
<span class="line" id="L363"> <span class="tok-kw">const</span> u = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@intFromFloat</span>(val));</span>
<span class="line" id="L364"> <span class="tok-kw">const</span> n = <span class="tok-builtin">@as</span>(<span class="tok-type">f64</span>, <span class="tok-builtin">@floatFromInt</span>(u));</span>
<span class="line" id="L365"></span>
<span class="line" id="L366"> <span class="tok-kw">var</span> mid = val - n;</span>
<span class="line" id="L367"> <span class="tok-kw">var</span> lo = ((fpprev(val) - n) + mid) / <span class="tok-number">2.0</span>;</span>
<span class="line" id="L368"> <span class="tok-kw">var</span> hi = ((fpnext(val) - n) + mid) / <span class="tok-number">2.0</span>;</span>
<span class="line" id="L369"></span>
<span class="line" id="L370"> <span class="tok-kw">var</span> buf_index = u64toa(u, buffer);</span>
<span class="line" id="L371"> <span class="tok-kw">var</span> exp = <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(buf_index));</span>
<span class="line" id="L372"> <span class="tok-kw">var</span> j = buf_index;</span>
<span class="line" id="L373"> buffer[j] = <span class="tok-number">0</span>;</span>
<span class="line" id="L374"></span>
<span class="line" id="L375"> <span class="tok-kw">if</span> (mid != <span class="tok-number">0.0</span>) {</span>
<span class="line" id="L376"> <span class="tok-kw">while</span> (mid != <span class="tok-number">0.0</span>) {</span>
<span class="line" id="L377"> lo *= <span class="tok-number">10.0</span>;</span>
<span class="line" id="L378"> <span class="tok-kw">const</span> ldig = <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intFromFloat</span>(lo));</span>
<span class="line" id="L379"> lo -= <span class="tok-builtin">@as</span>(<span class="tok-type">f64</span>, <span class="tok-builtin">@floatFromInt</span>(ldig));</span>
<span class="line" id="L380"></span>
<span class="line" id="L381"> mid *= <span class="tok-number">10.0</span>;</span>
<span class="line" id="L382"> <span class="tok-kw">const</span> mdig = <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intFromFloat</span>(mid));</span>
<span class="line" id="L383"> mid -= <span class="tok-builtin">@as</span>(<span class="tok-type">f64</span>, <span class="tok-builtin">@floatFromInt</span>(mdig));</span>
<span class="line" id="L384"></span>
<span class="line" id="L385"> hi *= <span class="tok-number">10.0</span>;</span>
<span class="line" id="L386"> <span class="tok-kw">const</span> hdig = <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intFromFloat</span>(hi));</span>
<span class="line" id="L387"> hi -= <span class="tok-builtin">@as</span>(<span class="tok-type">f64</span>, <span class="tok-builtin">@floatFromInt</span>(hdig));</span>
<span class="line" id="L388"></span>
<span class="line" id="L389"> buffer[j] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(mdig + <span class="tok-str">'0'</span>));</span>
<span class="line" id="L390"> j += <span class="tok-number">1</span>;</span>
<span class="line" id="L391"></span>
<span class="line" id="L392"> <span class="tok-kw">if</span> (hdig != ldig <span class="tok-kw">or</span> j > <span class="tok-number">50</span>) <span class="tok-kw">break</span>;</span>
<span class="line" id="L393"> }</span>
<span class="line" id="L394"></span>
<span class="line" id="L395"> <span class="tok-kw">if</span> (mid > <span class="tok-number">0.5</span>) {</span>
<span class="line" id="L396"> buffer[j - <span class="tok-number">1</span>] += <span class="tok-number">1</span>;</span>
<span class="line" id="L397"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> ((mid == <span class="tok-number">0.5</span>) <span class="tok-kw">and</span> (buffer[j - <span class="tok-number">1</span>] & <span class="tok-number">0x1</span>) != <span class="tok-number">0</span>) {</span>
<span class="line" id="L398"> buffer[j - <span class="tok-number">1</span>] += <span class="tok-number">1</span>;</span>
<span class="line" id="L399"> }</span>
<span class="line" id="L400"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L401"> <span class="tok-kw">while</span> (buffer[j - <span class="tok-number">1</span>] == <span class="tok-str">'0'</span>) {</span>
<span class="line" id="L402"> buffer[j - <span class="tok-number">1</span>] = <span class="tok-number">0</span>;</span>
<span class="line" id="L403"> j -= <span class="tok-number">1</span>;</span>
<span class="line" id="L404"> }</span>
<span class="line" id="L405"> }</span>
<span class="line" id="L406"></span>
<span class="line" id="L407"> buffer[j] = <span class="tok-number">0</span>;</span>
<span class="line" id="L408"></span>
<span class="line" id="L409"> <span class="tok-kw">return</span> FloatDecimal{</span>
<span class="line" id="L410"> .digits = buffer[<span class="tok-number">0</span>..j],</span>
<span class="line" id="L411"> .exp = exp,</span>
<span class="line" id="L412"> };</span>
<span class="line" id="L413">}</span>
<span class="line" id="L414"></span>
<span class="line" id="L415"><span class="tok-kw">fn</span> <span class="tok-fn">fpnext</span>(val: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L416"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">f64</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@bitCast</span>(val)) +% <span class="tok-number">1</span>));</span>
<span class="line" id="L417">}</span>
<span class="line" id="L418"></span>
<span class="line" id="L419"><span class="tok-kw">fn</span> <span class="tok-fn">fpprev</span>(val: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L420"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">f64</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@bitCast</span>(val)) -% <span class="tok-number">1</span>));</span>
<span class="line" id="L421">}</span>
<span class="line" id="L422"></span>
<span class="line" id="L423"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> c_digits_lut = [_]<span class="tok-type">u8</span>{</span>
<span class="line" id="L424"> <span class="tok-str">'0'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'6'</span>,</span>
<span class="line" id="L425"> <span class="tok-str">'0'</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'9'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'3'</span>,</span>
<span class="line" id="L426"> <span class="tok-str">'1'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'9'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'0'</span>,</span>
<span class="line" id="L427"> <span class="tok-str">'2'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'7'</span>,</span>
<span class="line" id="L428"> <span class="tok-str">'2'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'9'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'4'</span>,</span>
<span class="line" id="L429"> <span class="tok-str">'3'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'9'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'1'</span>,</span>
<span class="line" id="L430"> <span class="tok-str">'4'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'8'</span>,</span>
<span class="line" id="L431"> <span class="tok-str">'4'</span>, <span class="tok-str">'9'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'5'</span>,</span>
<span class="line" id="L432"> <span class="tok-str">'5'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'9'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'2'</span>,</span>
<span class="line" id="L433"> <span class="tok-str">'6'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'9'</span>,</span>
<span class="line" id="L434"> <span class="tok-str">'7'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'6'</span>,</span>
<span class="line" id="L435"> <span class="tok-str">'7'</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'9'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'3'</span>,</span>
<span class="line" id="L436"> <span class="tok-str">'8'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'9'</span>, <span class="tok-str">'9'</span>, <span class="tok-str">'0'</span>,</span>
<span class="line" id="L437"> <span class="tok-str">'9'</span>, <span class="tok-str">'1'</span>, <span class="tok-str">'9'</span>, <span class="tok-str">'2'</span>, <span class="tok-str">'9'</span>, <span class="tok-str">'3'</span>, <span class="tok-str">'9'</span>, <span class="tok-str">'4'</span>, <span class="tok-str">'9'</span>, <span class="tok-str">'5'</span>, <span class="tok-str">'9'</span>, <span class="tok-str">'6'</span>, <span class="tok-str">'9'</span>, <span class="tok-str">'7'</span>,</span>
<span class="line" id="L438"> <span class="tok-str">'9'</span>, <span class="tok-str">'8'</span>, <span class="tok-str">'9'</span>, <span class="tok-str">'9'</span>,</span>
<span class="line" id="L439">};</span>
<span class="line" id="L440"></span>
<span class="line" id="L441"><span class="tok-kw">fn</span> <span class="tok-fn">u64toa</span>(value_param: <span class="tok-type">u64</span>, buffer: []<span class="tok-type">u8</span>) <span class="tok-type">usize</span> {</span>
<span class="line" id="L442"> <span class="tok-kw">var</span> value = value_param;</span>
<span class="line" id="L443"> <span class="tok-kw">const</span> kTen8: <span class="tok-type">u64</span> = <span class="tok-number">100000000</span>;</span>
<span class="line" id="L444"> <span class="tok-kw">const</span> kTen9: <span class="tok-type">u64</span> = kTen8 * <span class="tok-number">10</span>;</span>
<span class="line" id="L445"> <span class="tok-kw">const</span> kTen10: <span class="tok-type">u64</span> = kTen8 * <span class="tok-number">100</span>;</span>
<span class="line" id="L446"> <span class="tok-kw">const</span> kTen11: <span class="tok-type">u64</span> = kTen8 * <span class="tok-number">1000</span>;</span>
<span class="line" id="L447"> <span class="tok-kw">const</span> kTen12: <span class="tok-type">u64</span> = kTen8 * <span class="tok-number">10000</span>;</span>
<span class="line" id="L448"> <span class="tok-kw">const</span> kTen13: <span class="tok-type">u64</span> = kTen8 * <span class="tok-number">100000</span>;</span>
<span class="line" id="L449"> <span class="tok-kw">const</span> kTen14: <span class="tok-type">u64</span> = kTen8 * <span class="tok-number">1000000</span>;</span>
<span class="line" id="L450"> <span class="tok-kw">const</span> kTen15: <span class="tok-type">u64</span> = kTen8 * <span class="tok-number">10000000</span>;</span>
<span class="line" id="L451"> <span class="tok-kw">const</span> kTen16: <span class="tok-type">u64</span> = kTen8 * kTen8;</span>
<span class="line" id="L452"></span>
<span class="line" id="L453"> <span class="tok-kw">var</span> buf_index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L454"></span>
<span class="line" id="L455"> <span class="tok-kw">if</span> (value < kTen8) {</span>
<span class="line" id="L456"> <span class="tok-kw">const</span> v = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(value));</span>
<span class="line" id="L457"> <span class="tok-kw">if</span> (v < <span class="tok-number">10000</span>) {</span>
<span class="line" id="L458"> <span class="tok-kw">const</span> d1: <span class="tok-type">u32</span> = (v / <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L459"> <span class="tok-kw">const</span> d2: <span class="tok-type">u32</span> = (v % <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L460"></span>
<span class="line" id="L461"> <span class="tok-kw">if</span> (v >= <span class="tok-number">1000</span>) {</span>
<span class="line" id="L462"> buffer[buf_index] = c_digits_lut[d1];</span>
<span class="line" id="L463"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L464"> }</span>
<span class="line" id="L465"> <span class="tok-kw">if</span> (v >= <span class="tok-number">100</span>) {</span>
<span class="line" id="L466"> buffer[buf_index] = c_digits_lut[d1 + <span class="tok-number">1</span>];</span>
<span class="line" id="L467"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L468"> }</span>
<span class="line" id="L469"> <span class="tok-kw">if</span> (v >= <span class="tok-number">10</span>) {</span>
<span class="line" id="L470"> buffer[buf_index] = c_digits_lut[d2];</span>
<span class="line" id="L471"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L472"> }</span>
<span class="line" id="L473"> buffer[buf_index] = c_digits_lut[d2 + <span class="tok-number">1</span>];</span>
<span class="line" id="L474"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L475"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L476"> <span class="tok-comment">// value = bbbbcccc</span>
</span>
<span class="line" id="L477"> <span class="tok-kw">const</span> b: <span class="tok-type">u32</span> = v / <span class="tok-number">10000</span>;</span>
<span class="line" id="L478"> <span class="tok-kw">const</span> c: <span class="tok-type">u32</span> = v % <span class="tok-number">10000</span>;</span>
<span class="line" id="L479"></span>
<span class="line" id="L480"> <span class="tok-kw">const</span> d1: <span class="tok-type">u32</span> = (b / <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L481"> <span class="tok-kw">const</span> d2: <span class="tok-type">u32</span> = (b % <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L482"></span>
<span class="line" id="L483"> <span class="tok-kw">const</span> d3: <span class="tok-type">u32</span> = (c / <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L484"> <span class="tok-kw">const</span> d4: <span class="tok-type">u32</span> = (c % <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L485"></span>
<span class="line" id="L486"> <span class="tok-kw">if</span> (value >= <span class="tok-number">10000000</span>) {</span>
<span class="line" id="L487"> buffer[buf_index] = c_digits_lut[d1];</span>
<span class="line" id="L488"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L489"> }</span>
<span class="line" id="L490"> <span class="tok-kw">if</span> (value >= <span class="tok-number">1000000</span>) {</span>
<span class="line" id="L491"> buffer[buf_index] = c_digits_lut[d1 + <span class="tok-number">1</span>];</span>
<span class="line" id="L492"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L493"> }</span>
<span class="line" id="L494"> <span class="tok-kw">if</span> (value >= <span class="tok-number">100000</span>) {</span>
<span class="line" id="L495"> buffer[buf_index] = c_digits_lut[d2];</span>
<span class="line" id="L496"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L497"> }</span>
<span class="line" id="L498"> buffer[buf_index] = c_digits_lut[d2 + <span class="tok-number">1</span>];</span>
<span class="line" id="L499"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L500"></span>
<span class="line" id="L501"> buffer[buf_index] = c_digits_lut[d3];</span>
<span class="line" id="L502"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L503"> buffer[buf_index] = c_digits_lut[d3 + <span class="tok-number">1</span>];</span>
<span class="line" id="L504"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L505"> buffer[buf_index] = c_digits_lut[d4];</span>
<span class="line" id="L506"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L507"> buffer[buf_index] = c_digits_lut[d4 + <span class="tok-number">1</span>];</span>
<span class="line" id="L508"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L509"> }</span>
<span class="line" id="L510"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (value < kTen16) {</span>
<span class="line" id="L511"> <span class="tok-kw">const</span> v0: <span class="tok-type">u32</span> = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(value / kTen8));</span>
<span class="line" id="L512"> <span class="tok-kw">const</span> v1: <span class="tok-type">u32</span> = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(value % kTen8));</span>
<span class="line" id="L513"></span>
<span class="line" id="L514"> <span class="tok-kw">const</span> b0: <span class="tok-type">u32</span> = v0 / <span class="tok-number">10000</span>;</span>
<span class="line" id="L515"> <span class="tok-kw">const</span> c0: <span class="tok-type">u32</span> = v0 % <span class="tok-number">10000</span>;</span>
<span class="line" id="L516"></span>
<span class="line" id="L517"> <span class="tok-kw">const</span> d1: <span class="tok-type">u32</span> = (b0 / <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L518"> <span class="tok-kw">const</span> d2: <span class="tok-type">u32</span> = (b0 % <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L519"></span>
<span class="line" id="L520"> <span class="tok-kw">const</span> d3: <span class="tok-type">u32</span> = (c0 / <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L521"> <span class="tok-kw">const</span> d4: <span class="tok-type">u32</span> = (c0 % <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L522"></span>
<span class="line" id="L523"> <span class="tok-kw">const</span> b1: <span class="tok-type">u32</span> = v1 / <span class="tok-number">10000</span>;</span>
<span class="line" id="L524"> <span class="tok-kw">const</span> c1: <span class="tok-type">u32</span> = v1 % <span class="tok-number">10000</span>;</span>
<span class="line" id="L525"></span>
<span class="line" id="L526"> <span class="tok-kw">const</span> d5: <span class="tok-type">u32</span> = (b1 / <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L527"> <span class="tok-kw">const</span> d6: <span class="tok-type">u32</span> = (b1 % <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L528"></span>
<span class="line" id="L529"> <span class="tok-kw">const</span> d7: <span class="tok-type">u32</span> = (c1 / <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L530"> <span class="tok-kw">const</span> d8: <span class="tok-type">u32</span> = (c1 % <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L531"></span>
<span class="line" id="L532"> <span class="tok-kw">if</span> (value >= kTen15) {</span>
<span class="line" id="L533"> buffer[buf_index] = c_digits_lut[d1];</span>
<span class="line" id="L534"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L535"> }</span>
<span class="line" id="L536"> <span class="tok-kw">if</span> (value >= kTen14) {</span>
<span class="line" id="L537"> buffer[buf_index] = c_digits_lut[d1 + <span class="tok-number">1</span>];</span>
<span class="line" id="L538"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L539"> }</span>
<span class="line" id="L540"> <span class="tok-kw">if</span> (value >= kTen13) {</span>
<span class="line" id="L541"> buffer[buf_index] = c_digits_lut[d2];</span>
<span class="line" id="L542"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L543"> }</span>
<span class="line" id="L544"> <span class="tok-kw">if</span> (value >= kTen12) {</span>
<span class="line" id="L545"> buffer[buf_index] = c_digits_lut[d2 + <span class="tok-number">1</span>];</span>
<span class="line" id="L546"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L547"> }</span>
<span class="line" id="L548"> <span class="tok-kw">if</span> (value >= kTen11) {</span>
<span class="line" id="L549"> buffer[buf_index] = c_digits_lut[d3];</span>
<span class="line" id="L550"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L551"> }</span>
<span class="line" id="L552"> <span class="tok-kw">if</span> (value >= kTen10) {</span>
<span class="line" id="L553"> buffer[buf_index] = c_digits_lut[d3 + <span class="tok-number">1</span>];</span>
<span class="line" id="L554"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L555"> }</span>
<span class="line" id="L556"> <span class="tok-kw">if</span> (value >= kTen9) {</span>
<span class="line" id="L557"> buffer[buf_index] = c_digits_lut[d4];</span>
<span class="line" id="L558"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L559"> }</span>
<span class="line" id="L560"> <span class="tok-kw">if</span> (value >= kTen8) {</span>
<span class="line" id="L561"> buffer[buf_index] = c_digits_lut[d4 + <span class="tok-number">1</span>];</span>
<span class="line" id="L562"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L563"> }</span>
<span class="line" id="L564"></span>
<span class="line" id="L565"> buffer[buf_index] = c_digits_lut[d5];</span>
<span class="line" id="L566"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L567"> buffer[buf_index] = c_digits_lut[d5 + <span class="tok-number">1</span>];</span>
<span class="line" id="L568"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L569"> buffer[buf_index] = c_digits_lut[d6];</span>
<span class="line" id="L570"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L571"> buffer[buf_index] = c_digits_lut[d6 + <span class="tok-number">1</span>];</span>
<span class="line" id="L572"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L573"> buffer[buf_index] = c_digits_lut[d7];</span>
<span class="line" id="L574"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L575"> buffer[buf_index] = c_digits_lut[d7 + <span class="tok-number">1</span>];</span>
<span class="line" id="L576"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L577"> buffer[buf_index] = c_digits_lut[d8];</span>
<span class="line" id="L578"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L579"> buffer[buf_index] = c_digits_lut[d8 + <span class="tok-number">1</span>];</span>
<span class="line" id="L580"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L581"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L582"> <span class="tok-kw">const</span> a = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(value / kTen16)); <span class="tok-comment">// 1 to 1844</span>
</span>
<span class="line" id="L583"> value %= kTen16;</span>
<span class="line" id="L584"></span>
<span class="line" id="L585"> <span class="tok-kw">if</span> (a < <span class="tok-number">10</span>) {</span>
<span class="line" id="L586"> buffer[buf_index] = <span class="tok-str">'0'</span> + <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(a));</span>
<span class="line" id="L587"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L588"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (a < <span class="tok-number">100</span>) {</span>
<span class="line" id="L589"> <span class="tok-kw">const</span> i: <span class="tok-type">u32</span> = a << <span class="tok-number">1</span>;</span>
<span class="line" id="L590"> buffer[buf_index] = c_digits_lut[i];</span>
<span class="line" id="L591"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L592"> buffer[buf_index] = c_digits_lut[i + <span class="tok-number">1</span>];</span>
<span class="line" id="L593"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L594"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (a < <span class="tok-number">1000</span>) {</span>
<span class="line" id="L595"> buffer[buf_index] = <span class="tok-str">'0'</span> + <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(a / <span class="tok-number">100</span>));</span>
<span class="line" id="L596"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L597"></span>
<span class="line" id="L598"> <span class="tok-kw">const</span> i: <span class="tok-type">u32</span> = (a % <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L599"> buffer[buf_index] = c_digits_lut[i];</span>
<span class="line" id="L600"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L601"> buffer[buf_index] = c_digits_lut[i + <span class="tok-number">1</span>];</span>
<span class="line" id="L602"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L603"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L604"> <span class="tok-kw">const</span> i: <span class="tok-type">u32</span> = (a / <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L605"> <span class="tok-kw">const</span> j: <span class="tok-type">u32</span> = (a % <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L606"> buffer[buf_index] = c_digits_lut[i];</span>
<span class="line" id="L607"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L608"> buffer[buf_index] = c_digits_lut[i + <span class="tok-number">1</span>];</span>
<span class="line" id="L609"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L610"> buffer[buf_index] = c_digits_lut[j];</span>
<span class="line" id="L611"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L612"> buffer[buf_index] = c_digits_lut[j + <span class="tok-number">1</span>];</span>
<span class="line" id="L613"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L614"> }</span>
<span class="line" id="L615"></span>
<span class="line" id="L616"> <span class="tok-kw">const</span> v0 = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(value / kTen8));</span>
<span class="line" id="L617"> <span class="tok-kw">const</span> v1 = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(value % kTen8));</span>
<span class="line" id="L618"></span>
<span class="line" id="L619"> <span class="tok-kw">const</span> b0: <span class="tok-type">u32</span> = v0 / <span class="tok-number">10000</span>;</span>
<span class="line" id="L620"> <span class="tok-kw">const</span> c0: <span class="tok-type">u32</span> = v0 % <span class="tok-number">10000</span>;</span>
<span class="line" id="L621"></span>
<span class="line" id="L622"> <span class="tok-kw">const</span> d1: <span class="tok-type">u32</span> = (b0 / <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L623"> <span class="tok-kw">const</span> d2: <span class="tok-type">u32</span> = (b0 % <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L624"></span>
<span class="line" id="L625"> <span class="tok-kw">const</span> d3: <span class="tok-type">u32</span> = (c0 / <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L626"> <span class="tok-kw">const</span> d4: <span class="tok-type">u32</span> = (c0 % <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L627"></span>
<span class="line" id="L628"> <span class="tok-kw">const</span> b1: <span class="tok-type">u32</span> = v1 / <span class="tok-number">10000</span>;</span>
<span class="line" id="L629"> <span class="tok-kw">const</span> c1: <span class="tok-type">u32</span> = v1 % <span class="tok-number">10000</span>;</span>
<span class="line" id="L630"></span>
<span class="line" id="L631"> <span class="tok-kw">const</span> d5: <span class="tok-type">u32</span> = (b1 / <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L632"> <span class="tok-kw">const</span> d6: <span class="tok-type">u32</span> = (b1 % <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L633"></span>
<span class="line" id="L634"> <span class="tok-kw">const</span> d7: <span class="tok-type">u32</span> = (c1 / <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L635"> <span class="tok-kw">const</span> d8: <span class="tok-type">u32</span> = (c1 % <span class="tok-number">100</span>) << <span class="tok-number">1</span>;</span>
<span class="line" id="L636"></span>
<span class="line" id="L637"> buffer[buf_index] = c_digits_lut[d1];</span>
<span class="line" id="L638"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L639"> buffer[buf_index] = c_digits_lut[d1 + <span class="tok-number">1</span>];</span>
<span class="line" id="L640"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L641"> buffer[buf_index] = c_digits_lut[d2];</span>
<span class="line" id="L642"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L643"> buffer[buf_index] = c_digits_lut[d2 + <span class="tok-number">1</span>];</span>
<span class="line" id="L644"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L645"> buffer[buf_index] = c_digits_lut[d3];</span>
<span class="line" id="L646"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L647"> buffer[buf_index] = c_digits_lut[d3 + <span class="tok-number">1</span>];</span>
<span class="line" id="L648"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L649"> buffer[buf_index] = c_digits_lut[d4];</span>
<span class="line" id="L650"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L651"> buffer[buf_index] = c_digits_lut[d4 + <span class="tok-number">1</span>];</span>
<span class="line" id="L652"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L653"> buffer[buf_index] = c_digits_lut[d5];</span>
<span class="line" id="L654"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L655"> buffer[buf_index] = c_digits_lut[d5 + <span class="tok-number">1</span>];</span>
<span class="line" id="L656"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L657"> buffer[buf_index] = c_digits_lut[d6];</span>
<span class="line" id="L658"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L659"> buffer[buf_index] = c_digits_lut[d6 + <span class="tok-number">1</span>];</span>
<span class="line" id="L660"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L661"> buffer[buf_index] = c_digits_lut[d7];</span>
<span class="line" id="L662"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L663"> buffer[buf_index] = c_digits_lut[d7 + <span class="tok-number">1</span>];</span>
<span class="line" id="L664"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L665"> buffer[buf_index] = c_digits_lut[d8];</span>
<span class="line" id="L666"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L667"> buffer[buf_index] = c_digits_lut[d8 + <span class="tok-number">1</span>];</span>
<span class="line" id="L668"> buf_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L669"> }</span>
<span class="line" id="L670"></span>
<span class="line" id="L671"> <span class="tok-kw">return</span> buf_index;</span>
<span class="line" id="L672">}</span>
<span class="line" id="L673"></span>
<span class="line" id="L674"><span class="tok-kw">fn</span> <span class="tok-fn">fpeint</span>(from: <span class="tok-type">f64</span>) <span class="tok-type">u128</span> {</span>
<span class="line" id="L675"> <span class="tok-kw">const</span> bits = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@bitCast</span>(from));</span>
<span class="line" id="L676"> assert((bits & ((<span class="tok-number">1</span> << <span class="tok-number">52</span>) - <span class="tok-number">1</span>)) == <span class="tok-number">0</span>);</span>
<span class="line" id="L677"></span>
<span class="line" id="L678"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">u128</span>, <span class="tok-number">1</span>) << <span class="tok-builtin">@as</span>(<span class="tok-type">u7</span>, <span class="tok-builtin">@truncate</span>((bits >> <span class="tok-number">52</span>) -% <span class="tok-number">1023</span>));</span>
<span class="line" id="L679">}</span>
<span class="line" id="L680"></span>
<span class="line" id="L681"><span class="tok-comment">/// Given two different integers with the same length in terms of the number</span></span>
<span class="line" id="L682"><span class="tok-comment">/// of decimal digits, index the digits from the right-most position starting</span></span>
<span class="line" id="L683"><span class="tok-comment">/// from zero, find the first index where the digits in the two integers</span></span>
<span class="line" id="L684"><span class="tok-comment">/// divergent starting from the highest index.</span></span>
<span class="line" id="L685"><span class="tok-comment">/// @a: Integer a.</span></span>
<span class="line" id="L686"><span class="tok-comment">/// @b: Integer b.</span></span>
<span class="line" id="L687"><span class="tok-comment">/// &returns: An index within [0, 19).</span></span>
<span class="line" id="L688"><span class="tok-kw">fn</span> <span class="tok-fn">mismatch10</span>(a: <span class="tok-type">u64</span>, b: <span class="tok-type">u64</span>) <span class="tok-type">i32</span> {</span>
<span class="line" id="L689"> <span class="tok-kw">const</span> pow10 = <span class="tok-number">10000000000</span>;</span>
<span class="line" id="L690"> <span class="tok-kw">const</span> af = a / pow10;</span>
<span class="line" id="L691"> <span class="tok-kw">const</span> bf = b / pow10;</span>
<span class="line" id="L692"></span>
<span class="line" id="L693"> <span class="tok-kw">var</span> i: <span class="tok-type">i32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L694"> <span class="tok-kw">var</span> a_copy = a;</span>
<span class="line" id="L695"> <span class="tok-kw">var</span> b_copy = b;</span>
<span class="line" id="L696"></span>
<span class="line" id="L697"> <span class="tok-kw">if</span> (af != bf) {</span>
<span class="line" id="L698"> i = <span class="tok-number">10</span>;</span>
<span class="line" id="L699"> a_copy = af;</span>
<span class="line" id="L700"> b_copy = bf;</span>
<span class="line" id="L701"> }</span>
<span class="line" id="L702"></span>
<span class="line" id="L703"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L704"> a_copy /= <span class="tok-number">10</span>;</span>
<span class="line" id="L705"> b_copy /= <span class="tok-number">10</span>;</span>
<span class="line" id="L706"></span>
<span class="line" id="L707"> <span class="tok-kw">if</span> (a_copy == b_copy) <span class="tok-kw">return</span> i;</span>
<span class="line" id="L708"> }</span>
<span class="line" id="L709">}</span>
<span class="line" id="L710"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> parseFloat = <span class="tok-builtin">@import</span>(<span class="tok-str">"parse_float/parse_float.zig"</span>).parseFloat;</span>
<span class="line" id="L2"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ParseFloatError = <span class="tok-builtin">@import</span>(<span class="tok-str">"parse_float/parse_float.zig"</span>).ParseFloatError;</span>
<span class="line" id="L3"></span>
<span class="line" id="L4"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L5"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L6"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> expect = testing.expect;</span>
<span class="line" id="L9"><span class="tok-kw">const</span> expectEqual = testing.expectEqual;</span>
<span class="line" id="L10"><span class="tok-kw">const</span> expectError = testing.expectError;</span>
<span class="line" id="L11"><span class="tok-kw">const</span> approxEqAbs = std.math.approxEqAbs;</span>
<span class="line" id="L12"><span class="tok-kw">const</span> epsilon = <span class="tok-number">1e-7</span>;</span>
<span class="line" id="L13"></span>
<span class="line" id="L14"><span class="tok-comment">// See https://github.com/tiehuis/parse-number-fxx-test-data for a wider-selection of test-data.</span>
</span>
<span class="line" id="L15"></span>
<span class="line" id="L16"><span class="tok-kw">test</span> <span class="tok-str">"fmt.parseFloat"</span> {</span>
<span class="line" id="L17"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> ([_]<span class="tok-type">type</span>{ <span class="tok-type">f16</span>, <span class="tok-type">f32</span>, <span class="tok-type">f64</span>, <span class="tok-type">f128</span> }) |T| {</span>
<span class="line" id="L18"> <span class="tok-kw">try</span> testing.expectError(<span class="tok-kw">error</span>.InvalidCharacter, parseFloat(T, <span class="tok-str">""</span>));</span>
<span class="line" id="L19"> <span class="tok-kw">try</span> testing.expectError(<span class="tok-kw">error</span>.InvalidCharacter, parseFloat(T, <span class="tok-str">" 1"</span>));</span>
<span class="line" id="L20"> <span class="tok-kw">try</span> testing.expectError(<span class="tok-kw">error</span>.InvalidCharacter, parseFloat(T, <span class="tok-str">"1abc"</span>));</span>
<span class="line" id="L21"> <span class="tok-kw">try</span> testing.expectError(<span class="tok-kw">error</span>.InvalidCharacter, parseFloat(T, <span class="tok-str">"+"</span>));</span>
<span class="line" id="L22"> <span class="tok-kw">try</span> testing.expectError(<span class="tok-kw">error</span>.InvalidCharacter, parseFloat(T, <span class="tok-str">"-"</span>));</span>
<span class="line" id="L23"></span>
<span class="line" id="L24"> <span class="tok-kw">try</span> expectEqual(<span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"0"</span>), <span class="tok-number">0.0</span>);</span>
<span class="line" id="L25"> <span class="tok-kw">try</span> expectEqual(<span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"0"</span>), <span class="tok-number">0.0</span>);</span>
<span class="line" id="L26"> <span class="tok-kw">try</span> expectEqual(<span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"+0"</span>), <span class="tok-number">0.0</span>);</span>
<span class="line" id="L27"> <span class="tok-kw">try</span> expectEqual(<span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"-0"</span>), <span class="tok-number">0.0</span>);</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"> <span class="tok-kw">try</span> expectEqual(<span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"0e0"</span>), <span class="tok-number">0</span>);</span>
<span class="line" id="L30"> <span class="tok-kw">try</span> expectEqual(<span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"2e3"</span>), <span class="tok-number">2000.0</span>);</span>
<span class="line" id="L31"> <span class="tok-kw">try</span> expectEqual(<span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"1e0"</span>), <span class="tok-number">1.0</span>);</span>
<span class="line" id="L32"> <span class="tok-kw">try</span> expectEqual(<span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"-2e3"</span>), -<span class="tok-number">2000.0</span>);</span>
<span class="line" id="L33"> <span class="tok-kw">try</span> expectEqual(<span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"-1e0"</span>), -<span class="tok-number">1.0</span>);</span>
<span class="line" id="L34"> <span class="tok-kw">try</span> expectEqual(<span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"1.234e3"</span>), <span class="tok-number">1234</span>);</span>
<span class="line" id="L35"></span>
<span class="line" id="L36"> <span class="tok-kw">try</span> expect(approxEqAbs(T, <span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"3.141"</span>), <span class="tok-number">3.141</span>, epsilon));</span>
<span class="line" id="L37"> <span class="tok-kw">try</span> expect(approxEqAbs(T, <span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"-3.141"</span>), -<span class="tok-number">3.141</span>, epsilon));</span>
<span class="line" id="L38"></span>
<span class="line" id="L39"> <span class="tok-kw">try</span> expectEqual(<span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"1e-5000"</span>), <span class="tok-number">0</span>);</span>
<span class="line" id="L40"> <span class="tok-kw">try</span> expectEqual(<span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"1e+5000"</span>), std.math.inf(T));</span>
<span class="line" id="L41"></span>
<span class="line" id="L42"> <span class="tok-kw">try</span> expectEqual(<span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"0.4e0066999999999999999999999999999999999999999999999999999"</span>), std.math.inf(T));</span>
<span class="line" id="L43"> <span class="tok-kw">try</span> expect(approxEqAbs(T, <span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"0_1_2_3_4_5_6.7_8_9_0_0_0e0_0_1_0"</span>), <span class="tok-builtin">@as</span>(T, <span class="tok-number">123456.789000e10</span>), epsilon));</span>
<span class="line" id="L44"></span>
<span class="line" id="L45"> <span class="tok-comment">// underscore rule is simple and reduces to "can only occur between two digits" and multiple are not supported.</span>
</span>
<span class="line" id="L46"> <span class="tok-kw">try</span> expectError(<span class="tok-kw">error</span>.InvalidCharacter, parseFloat(T, <span class="tok-str">"0123456.789000e_0010"</span>)); <span class="tok-comment">// cannot occur immediately after exponent</span>
</span>
<span class="line" id="L47"> <span class="tok-kw">try</span> expectError(<span class="tok-kw">error</span>.InvalidCharacter, parseFloat(T, <span class="tok-str">"_0123456.789000e0010"</span>)); <span class="tok-comment">// cannot occur before any digits</span>
</span>
<span class="line" id="L48"> <span class="tok-kw">try</span> expectError(<span class="tok-kw">error</span>.InvalidCharacter, parseFloat(T, <span class="tok-str">"0__123456.789000e_0010"</span>)); <span class="tok-comment">// cannot occur twice in a row</span>
</span>
<span class="line" id="L49"> <span class="tok-kw">try</span> expectError(<span class="tok-kw">error</span>.InvalidCharacter, parseFloat(T, <span class="tok-str">"0123456_.789000e0010"</span>)); <span class="tok-comment">// cannot occur before decimal point</span>
</span>
<span class="line" id="L50"> <span class="tok-kw">try</span> expectError(<span class="tok-kw">error</span>.InvalidCharacter, parseFloat(T, <span class="tok-str">"0123456.789000e0010_"</span>)); <span class="tok-comment">// cannot occur at end of number</span>
</span>
<span class="line" id="L51"></span>
<span class="line" id="L52"> <span class="tok-kw">try</span> expect(approxEqAbs(T, <span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"1e-2"</span>), <span class="tok-number">0.01</span>, epsilon));</span>
<span class="line" id="L53"> <span class="tok-kw">try</span> expect(approxEqAbs(T, <span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"1234e-2"</span>), <span class="tok-number">12.34</span>, epsilon));</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"> <span class="tok-kw">try</span> expect(approxEqAbs(T, <span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"1."</span>), <span class="tok-number">1</span>, epsilon));</span>
<span class="line" id="L56"> <span class="tok-kw">try</span> expect(approxEqAbs(T, <span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"0."</span>), <span class="tok-number">0</span>, epsilon));</span>
<span class="line" id="L57"> <span class="tok-kw">try</span> expect(approxEqAbs(T, <span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">".1"</span>), <span class="tok-number">0.1</span>, epsilon));</span>
<span class="line" id="L58"> <span class="tok-kw">try</span> expect(approxEqAbs(T, <span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">".0"</span>), <span class="tok-number">0</span>, epsilon));</span>
<span class="line" id="L59"> <span class="tok-kw">try</span> expect(approxEqAbs(T, <span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">".1e-1"</span>), <span class="tok-number">0.01</span>, epsilon));</span>
<span class="line" id="L60"></span>
<span class="line" id="L61"> <span class="tok-kw">try</span> expectError(<span class="tok-kw">error</span>.InvalidCharacter, parseFloat(T, <span class="tok-str">"."</span>)); <span class="tok-comment">// At least one digit is required.</span>
</span>
<span class="line" id="L62"> <span class="tok-kw">try</span> expectError(<span class="tok-kw">error</span>.InvalidCharacter, parseFloat(T, <span class="tok-str">".e1"</span>)); <span class="tok-comment">// At least one digit is required.</span>
</span>
<span class="line" id="L63"> <span class="tok-kw">try</span> expectError(<span class="tok-kw">error</span>.InvalidCharacter, parseFloat(T, <span class="tok-str">"0.e"</span>)); <span class="tok-comment">// At least one digit is required.</span>
</span>
<span class="line" id="L64"></span>
<span class="line" id="L65"> <span class="tok-kw">try</span> expect(approxEqAbs(T, <span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"123142.1"</span>), <span class="tok-number">123142.1</span>, epsilon));</span>
<span class="line" id="L66"> <span class="tok-kw">try</span> expect(approxEqAbs(T, <span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"-123142.1124"</span>), <span class="tok-builtin">@as</span>(T, -<span class="tok-number">123142.1124</span>), epsilon));</span>
<span class="line" id="L67"> <span class="tok-kw">try</span> expect(approxEqAbs(T, <span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"0.7062146892655368"</span>), <span class="tok-builtin">@as</span>(T, <span class="tok-number">0.7062146892655368</span>), epsilon));</span>
<span class="line" id="L68"> <span class="tok-kw">try</span> expect(approxEqAbs(T, <span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"2.71828182845904523536"</span>), <span class="tok-builtin">@as</span>(T, <span class="tok-number">2.718281828459045</span>), epsilon));</span>
<span class="line" id="L69"> }</span>
<span class="line" id="L70">}</span>
<span class="line" id="L71"></span>
<span class="line" id="L72"><span class="tok-kw">test</span> <span class="tok-str">"fmt.parseFloat nan and inf"</span> {</span>
<span class="line" id="L73"> <span class="tok-kw">if</span> (builtin.zig_backend == .stage2_llvm <span class="tok-kw">and</span> builtin.cpu.arch == .aarch64) {</span>
<span class="line" id="L74"> <span class="tok-comment">// https://github.com/ziglang/zig/issues/12027</span>
</span>
<span class="line" id="L75"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L76"> }</span>
<span class="line" id="L77"></span>
<span class="line" id="L78"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> ([_]<span class="tok-type">type</span>{ <span class="tok-type">f16</span>, <span class="tok-type">f32</span>, <span class="tok-type">f64</span>, <span class="tok-type">f128</span> }) |T| {</span>
<span class="line" id="L79"> <span class="tok-kw">const</span> Z = std.meta.Int(.unsigned, <span class="tok-builtin">@typeInfo</span>(T).Float.bits);</span>
<span class="line" id="L80"></span>
<span class="line" id="L81"> <span class="tok-kw">try</span> expectEqual(<span class="tok-builtin">@as</span>(Z, <span class="tok-builtin">@bitCast</span>(<span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"nAn"</span>))), <span class="tok-builtin">@as</span>(Z, <span class="tok-builtin">@bitCast</span>(std.math.nan(T))));</span>
<span class="line" id="L82"> <span class="tok-kw">try</span> expectEqual(<span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"inF"</span>), std.math.inf(T));</span>
<span class="line" id="L83"> <span class="tok-kw">try</span> expectEqual(<span class="tok-kw">try</span> parseFloat(T, <span class="tok-str">"-INF"</span>), -std.math.inf(T));</span>
<span class="line" id="L84"> }</span>
<span class="line" id="L85">}</span>
<span class="line" id="L86"></span>
<span class="line" id="L87"><span class="tok-kw">test</span> <span class="tok-str">"fmt.parseFloat #11169"</span> {</span>
<span class="line" id="L88"> <span class="tok-kw">try</span> expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f128</span>, <span class="tok-str">"9007199254740993.0"</span>), <span class="tok-number">9007199254740993.0</span>);</span>
<span class="line" id="L89">}</span>
<span class="line" id="L90"></span>
<span class="line" id="L91"><span class="tok-kw">test</span> <span class="tok-str">"fmt.parseFloat hex.special"</span> {</span>
<span class="line" id="L92"> <span class="tok-kw">try</span> testing.expect(math.isNan(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"nAn"</span>)));</span>
<span class="line" id="L93"> <span class="tok-kw">try</span> testing.expect(math.isPositiveInf(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"iNf"</span>)));</span>
<span class="line" id="L94"> <span class="tok-kw">try</span> testing.expect(math.isPositiveInf(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"+Inf"</span>)));</span>
<span class="line" id="L95"> <span class="tok-kw">try</span> testing.expect(math.isNegativeInf(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"-iNf"</span>)));</span>
<span class="line" id="L96">}</span>
<span class="line" id="L97"><span class="tok-kw">test</span> <span class="tok-str">"fmt.parseFloat hex.zero"</span> {</span>
<span class="line" id="L98"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">f32</span>, <span class="tok-number">0.0</span>), <span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"0x0"</span>));</span>
<span class="line" id="L99"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">f32</span>, <span class="tok-number">0.0</span>), <span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"-0x0"</span>));</span>
<span class="line" id="L100"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">f32</span>, <span class="tok-number">0.0</span>), <span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"0x0p42"</span>));</span>
<span class="line" id="L101"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">f32</span>, <span class="tok-number">0.0</span>), <span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"-0x0.00000p42"</span>));</span>
<span class="line" id="L102"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">f32</span>, <span class="tok-number">0.0</span>), <span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"0x0.00000p666"</span>));</span>
<span class="line" id="L103">}</span>
<span class="line" id="L104"></span>
<span class="line" id="L105"><span class="tok-kw">test</span> <span class="tok-str">"fmt.parseFloat hex.f16"</span> {</span>
<span class="line" id="L106"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f16</span>, <span class="tok-str">"0x1p0"</span>), <span class="tok-number">1.0</span>);</span>
<span class="line" id="L107"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f16</span>, <span class="tok-str">"-0x1p-1"</span>), -<span class="tok-number">0.5</span>);</span>
<span class="line" id="L108"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f16</span>, <span class="tok-str">"0x10p+10"</span>), <span class="tok-number">16384.0</span>);</span>
<span class="line" id="L109"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f16</span>, <span class="tok-str">"0x10p-10"</span>), <span class="tok-number">0.015625</span>);</span>
<span class="line" id="L110"> <span class="tok-comment">// Max normalized value.</span>
</span>
<span class="line" id="L111"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f16</span>, <span class="tok-str">"0x1.ffcp+15"</span>), math.floatMax(<span class="tok-type">f16</span>));</span>
<span class="line" id="L112"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f16</span>, <span class="tok-str">"-0x1.ffcp+15"</span>), -math.floatMax(<span class="tok-type">f16</span>));</span>
<span class="line" id="L113"> <span class="tok-comment">// Min normalized value.</span>
</span>
<span class="line" id="L114"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f16</span>, <span class="tok-str">"0x1p-14"</span>), math.floatMin(<span class="tok-type">f16</span>));</span>
<span class="line" id="L115"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f16</span>, <span class="tok-str">"-0x1p-14"</span>), -math.floatMin(<span class="tok-type">f16</span>));</span>
<span class="line" id="L116"> <span class="tok-comment">// Min denormal value.</span>
</span>
<span class="line" id="L117"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f16</span>, <span class="tok-str">"0x1p-24"</span>), math.floatTrueMin(<span class="tok-type">f16</span>));</span>
<span class="line" id="L118"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f16</span>, <span class="tok-str">"-0x1p-24"</span>), -math.floatTrueMin(<span class="tok-type">f16</span>));</span>
<span class="line" id="L119">}</span>
<span class="line" id="L120"></span>
<span class="line" id="L121"><span class="tok-kw">test</span> <span class="tok-str">"fmt.parseFloat hex.f32"</span> {</span>
<span class="line" id="L122"> <span class="tok-kw">try</span> testing.expectError(<span class="tok-kw">error</span>.InvalidCharacter, parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"0x"</span>));</span>
<span class="line" id="L123"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"0x1p0"</span>), <span class="tok-number">1.0</span>);</span>
<span class="line" id="L124"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"-0x1p-1"</span>), -<span class="tok-number">0.5</span>);</span>
<span class="line" id="L125"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"0x10p+10"</span>), <span class="tok-number">16384.0</span>);</span>
<span class="line" id="L126"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"0x10p-10"</span>), <span class="tok-number">0.015625</span>);</span>
<span class="line" id="L127"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"0x0.ffffffp128"</span>), <span class="tok-number">0x0.ffffffp128</span>);</span>
<span class="line" id="L128"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"0x0.1234570p-125"</span>), <span class="tok-number">0x0.1234570p-125</span>);</span>
<span class="line" id="L129"> <span class="tok-comment">// Max normalized value.</span>
</span>
<span class="line" id="L130"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"0x1.fffffeP+127"</span>), math.floatMax(<span class="tok-type">f32</span>));</span>
<span class="line" id="L131"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"-0x1.fffffeP+127"</span>), -math.floatMax(<span class="tok-type">f32</span>));</span>
<span class="line" id="L132"> <span class="tok-comment">// Min normalized value.</span>
</span>
<span class="line" id="L133"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"0x1p-126"</span>), math.floatMin(<span class="tok-type">f32</span>));</span>
<span class="line" id="L134"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"-0x1p-126"</span>), -math.floatMin(<span class="tok-type">f32</span>));</span>
<span class="line" id="L135"> <span class="tok-comment">// Min denormal value.</span>
</span>
<span class="line" id="L136"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"0x1P-149"</span>), math.floatTrueMin(<span class="tok-type">f32</span>));</span>
<span class="line" id="L137"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f32</span>, <span class="tok-str">"-0x1P-149"</span>), -math.floatTrueMin(<span class="tok-type">f32</span>));</span>
<span class="line" id="L138">}</span>
<span class="line" id="L139"></span>
<span class="line" id="L140"><span class="tok-kw">test</span> <span class="tok-str">"fmt.parseFloat hex.f64"</span> {</span>
<span class="line" id="L141"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f64</span>, <span class="tok-str">"0x1p0"</span>), <span class="tok-number">1.0</span>);</span>
<span class="line" id="L142"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f64</span>, <span class="tok-str">"-0x1p-1"</span>), -<span class="tok-number">0.5</span>);</span>
<span class="line" id="L143"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f64</span>, <span class="tok-str">"0x10p+10"</span>), <span class="tok-number">16384.0</span>);</span>
<span class="line" id="L144"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f64</span>, <span class="tok-str">"0x10p-10"</span>), <span class="tok-number">0.015625</span>);</span>
<span class="line" id="L145"> <span class="tok-comment">// Max normalized value.</span>
</span>
<span class="line" id="L146"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f64</span>, <span class="tok-str">"0x1.fffffffffffffp+1023"</span>), math.floatMax(<span class="tok-type">f64</span>));</span>
<span class="line" id="L147"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f64</span>, <span class="tok-str">"-0x1.fffffffffffffp1023"</span>), -math.floatMax(<span class="tok-type">f64</span>));</span>
<span class="line" id="L148"> <span class="tok-comment">// Min normalized value.</span>
</span>
<span class="line" id="L149"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f64</span>, <span class="tok-str">"0x1p-1022"</span>), math.floatMin(<span class="tok-type">f64</span>));</span>
<span class="line" id="L150"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f64</span>, <span class="tok-str">"-0x1p-1022"</span>), -math.floatMin(<span class="tok-type">f64</span>));</span>
<span class="line" id="L151"> <span class="tok-comment">// Min denormalized value.</span>
</span>
<span class="line" id="L152"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f64</span>, <span class="tok-str">"0x1p-1074"</span>), math.floatTrueMin(<span class="tok-type">f64</span>));</span>
<span class="line" id="L153"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f64</span>, <span class="tok-str">"-0x1p-1074"</span>), -math.floatTrueMin(<span class="tok-type">f64</span>));</span>
<span class="line" id="L154">}</span>
<span class="line" id="L155"><span class="tok-kw">test</span> <span class="tok-str">"fmt.parseFloat hex.f128"</span> {</span>
<span class="line" id="L156"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f128</span>, <span class="tok-str">"0x1p0"</span>), <span class="tok-number">1.0</span>);</span>
<span class="line" id="L157"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f128</span>, <span class="tok-str">"-0x1p-1"</span>), -<span class="tok-number">0.5</span>);</span>
<span class="line" id="L158"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f128</span>, <span class="tok-str">"0x10p+10"</span>), <span class="tok-number">16384.0</span>);</span>
<span class="line" id="L159"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f128</span>, <span class="tok-str">"0x10p-10"</span>), <span class="tok-number">0.015625</span>);</span>
<span class="line" id="L160"> <span class="tok-comment">// Max normalized value.</span>
</span>
<span class="line" id="L161"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f128</span>, <span class="tok-str">"0xf.fffffffffffffffffffffffffff8p+16380"</span>), math.floatMax(<span class="tok-type">f128</span>));</span>
<span class="line" id="L162"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f128</span>, <span class="tok-str">"-0xf.fffffffffffffffffffffffffff8p+16380"</span>), -math.floatMax(<span class="tok-type">f128</span>));</span>
<span class="line" id="L163"> <span class="tok-comment">// Min normalized value.</span>
</span>
<span class="line" id="L164"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f128</span>, <span class="tok-str">"0x1p-16382"</span>), math.floatMin(<span class="tok-type">f128</span>));</span>
<span class="line" id="L165"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f128</span>, <span class="tok-str">"-0x1p-16382"</span>), -math.floatMin(<span class="tok-type">f128</span>));</span>
<span class="line" id="L166"> <span class="tok-comment">// // Min denormalized value.</span>
</span>
<span class="line" id="L167"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f128</span>, <span class="tok-str">"0x1p-16494"</span>), math.floatTrueMin(<span class="tok-type">f128</span>));</span>
<span class="line" id="L168"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f128</span>, <span class="tok-str">"-0x1p-16494"</span>), -math.floatTrueMin(<span class="tok-type">f128</span>));</span>
<span class="line" id="L169"> <span class="tok-comment">// ensure round-to-even</span>
</span>
<span class="line" id="L170"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-kw">try</span> parseFloat(<span class="tok-type">f128</span>, <span class="tok-str">"0x1.edcb34a235253948765432134674fp-1"</span>), <span class="tok-number">0x1.edcb34a235253948765432134674fp-1</span>);</span>
<span class="line" id="L171">}</span>
<span class="line" id="L172"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/fmt | repos/yazap/docs/src/std/fmt/parse_float/convert_eisel_lemire.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> common = <span class="tok-builtin">@import</span>(<span class="tok-str">"common.zig"</span>);</span>
<span class="line" id="L4"><span class="tok-kw">const</span> FloatInfo = <span class="tok-builtin">@import</span>(<span class="tok-str">"FloatInfo.zig"</span>);</span>
<span class="line" id="L5"><span class="tok-kw">const</span> BiasedFp = common.BiasedFp;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> Number = common.Number;</span>
<span class="line" id="L7"></span>
<span class="line" id="L8"><span class="tok-comment">/// Compute a float using an extended-precision representation.</span></span>
<span class="line" id="L9"><span class="tok-comment">///</span></span>
<span class="line" id="L10"><span class="tok-comment">/// Fast conversion of a the significant digits and decimal exponent</span></span>
<span class="line" id="L11"><span class="tok-comment">/// a float to an extended representation with a binary float. This</span></span>
<span class="line" id="L12"><span class="tok-comment">/// algorithm will accurately parse the vast majority of cases,</span></span>
<span class="line" id="L13"><span class="tok-comment">/// and uses a 128-bit representation (with a fallback 192-bit</span></span>
<span class="line" id="L14"><span class="tok-comment">/// representation).</span></span>
<span class="line" id="L15"><span class="tok-comment">///</span></span>
<span class="line" id="L16"><span class="tok-comment">/// This algorithm scales the exponent by the decimal exponent</span></span>
<span class="line" id="L17"><span class="tok-comment">/// using pre-computed powers-of-5, and calculates if the</span></span>
<span class="line" id="L18"><span class="tok-comment">/// representation can be unambiguously rounded to the nearest</span></span>
<span class="line" id="L19"><span class="tok-comment">/// machine float. Near-halfway cases are not handled here,</span></span>
<span class="line" id="L20"><span class="tok-comment">/// and are represented by a negative, biased binary exponent.</span></span>
<span class="line" id="L21"><span class="tok-comment">///</span></span>
<span class="line" id="L22"><span class="tok-comment">/// The algorithm is described in detail in "Daniel Lemire, Number Parsing</span></span>
<span class="line" id="L23"><span class="tok-comment">/// at a Gigabyte per Second" in section 5, "Fast Algorithm", and</span></span>
<span class="line" id="L24"><span class="tok-comment">/// section 6, "Exact Numbers And Ties", available online:</span></span>
<span class="line" id="L25"><span class="tok-comment">/// <https://arxiv.org/abs/2101.11408.pdf>.</span></span>
<span class="line" id="L26"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">convertEiselLemire</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, q: <span class="tok-type">i64</span>, w_: <span class="tok-type">u64</span>) ?BiasedFp(<span class="tok-type">f64</span>) {</span>
<span class="line" id="L27"> std.debug.assert(T == <span class="tok-type">f16</span> <span class="tok-kw">or</span> T == <span class="tok-type">f32</span> <span class="tok-kw">or</span> T == <span class="tok-type">f64</span>);</span>
<span class="line" id="L28"> <span class="tok-kw">var</span> w = w_;</span>
<span class="line" id="L29"> <span class="tok-kw">const</span> float_info = FloatInfo.from(T);</span>
<span class="line" id="L30"></span>
<span class="line" id="L31"> <span class="tok-comment">// Short-circuit if the value can only be a literal 0 or infinity.</span>
</span>
<span class="line" id="L32"> <span class="tok-kw">if</span> (w == <span class="tok-number">0</span> <span class="tok-kw">or</span> q < float_info.smallest_power_of_ten) {</span>
<span class="line" id="L33"> <span class="tok-kw">return</span> BiasedFp(<span class="tok-type">f64</span>).zero();</span>
<span class="line" id="L34"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (q > float_info.largest_power_of_ten) {</span>
<span class="line" id="L35"> <span class="tok-kw">return</span> BiasedFp(<span class="tok-type">f64</span>).inf(T);</span>
<span class="line" id="L36"> }</span>
<span class="line" id="L37"></span>
<span class="line" id="L38"> <span class="tok-comment">// Normalize our significant digits, so the most-significant bit is set.</span>
</span>
<span class="line" id="L39"> <span class="tok-kw">const</span> lz = <span class="tok-builtin">@clz</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@bitCast</span>(w)));</span>
<span class="line" id="L40"> w = math.shl(<span class="tok-type">u64</span>, w, lz);</span>
<span class="line" id="L41"></span>
<span class="line" id="L42"> <span class="tok-kw">const</span> r = computeProductApprox(q, w, float_info.mantissa_explicit_bits + <span class="tok-number">3</span>);</span>
<span class="line" id="L43"> <span class="tok-kw">if</span> (r.lo == <span class="tok-number">0xffff_ffff_ffff_ffff</span>) {</span>
<span class="line" id="L44"> <span class="tok-comment">// If we have failed to approximate w x 5^-q with our 128-bit value.</span>
</span>
<span class="line" id="L45"> <span class="tok-comment">// Since the addition of 1 could lead to an overflow which could then</span>
</span>
<span class="line" id="L46"> <span class="tok-comment">// round up over the half-way point, this can lead to improper rounding</span>
</span>
<span class="line" id="L47"> <span class="tok-comment">// of a float.</span>
</span>
<span class="line" id="L48"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L49"> <span class="tok-comment">// However, this can only occur if q ∈ [-27, 55]. The upper bound of q</span>
</span>
<span class="line" id="L50"> <span class="tok-comment">// is 55 because 5^55 < 2^128, however, this can only happen if 5^q > 2^64,</span>
</span>
<span class="line" id="L51"> <span class="tok-comment">// since otherwise the product can be represented in 64-bits, producing</span>
</span>
<span class="line" id="L52"> <span class="tok-comment">// an exact result. For negative exponents, rounding-to-even can</span>
</span>
<span class="line" id="L53"> <span class="tok-comment">// only occur if 5^-q < 2^64.</span>
</span>
<span class="line" id="L54"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L55"> <span class="tok-comment">// For detailed explanations of rounding for negative exponents, see</span>
</span>
<span class="line" id="L56"> <span class="tok-comment">// <https://arxiv.org/pdf/2101.11408.pdf#section.9.1>. For detailed</span>
</span>
<span class="line" id="L57"> <span class="tok-comment">// explanations of rounding for positive exponents, see</span>
</span>
<span class="line" id="L58"> <span class="tok-comment">// <https://arxiv.org/pdf/2101.11408.pdf#section.8>.</span>
</span>
<span class="line" id="L59"> <span class="tok-kw">const</span> inside_safe_exponent = q >= -<span class="tok-number">27</span> <span class="tok-kw">and</span> q <= <span class="tok-number">55</span>;</span>
<span class="line" id="L60"> <span class="tok-kw">if</span> (!inside_safe_exponent) {</span>
<span class="line" id="L61"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L62"> }</span>
<span class="line" id="L63"> }</span>
<span class="line" id="L64"></span>
<span class="line" id="L65"> <span class="tok-kw">const</span> upper_bit = <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(r.hi >> <span class="tok-number">63</span>));</span>
<span class="line" id="L66"> <span class="tok-kw">var</span> mantissa = math.shr(<span class="tok-type">u64</span>, r.hi, upper_bit + <span class="tok-number">64</span> - <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(float_info.mantissa_explicit_bits)) - <span class="tok-number">3</span>);</span>
<span class="line" id="L67"> <span class="tok-kw">var</span> power2 = power(<span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(q))) + upper_bit - <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(lz)) - float_info.minimum_exponent;</span>
<span class="line" id="L68"> <span class="tok-kw">if</span> (power2 <= <span class="tok-number">0</span>) {</span>
<span class="line" id="L69"> <span class="tok-kw">if</span> (-power2 + <span class="tok-number">1</span> >= <span class="tok-number">64</span>) {</span>
<span class="line" id="L70"> <span class="tok-comment">// Have more than 64 bits below the minimum exponent, must be 0.</span>
</span>
<span class="line" id="L71"> <span class="tok-kw">return</span> BiasedFp(<span class="tok-type">f64</span>).zero();</span>
<span class="line" id="L72"> }</span>
<span class="line" id="L73"> <span class="tok-comment">// Have a subnormal value.</span>
</span>
<span class="line" id="L74"> mantissa = math.shr(<span class="tok-type">u64</span>, mantissa, -power2 + <span class="tok-number">1</span>);</span>
<span class="line" id="L75"> mantissa += mantissa & <span class="tok-number">1</span>;</span>
<span class="line" id="L76"> mantissa >>= <span class="tok-number">1</span>;</span>
<span class="line" id="L77"> power2 = <span class="tok-builtin">@intFromBool</span>(mantissa >= (<span class="tok-number">1</span> << float_info.mantissa_explicit_bits));</span>
<span class="line" id="L78"> <span class="tok-kw">return</span> BiasedFp(<span class="tok-type">f64</span>){ .f = mantissa, .e = power2 };</span>
<span class="line" id="L79"> }</span>
<span class="line" id="L80"></span>
<span class="line" id="L81"> <span class="tok-comment">// Need to handle rounding ties. Normally, we need to round up,</span>
</span>
<span class="line" id="L82"> <span class="tok-comment">// but if we fall right in between and and we have an even basis, we</span>
</span>
<span class="line" id="L83"> <span class="tok-comment">// need to round down.</span>
</span>
<span class="line" id="L84"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L85"> <span class="tok-comment">// This will only occur if:</span>
</span>
<span class="line" id="L86"> <span class="tok-comment">// 1. The lower 64 bits of the 128-bit representation is 0.</span>
</span>
<span class="line" id="L87"> <span class="tok-comment">// IE, 5^q fits in single 64-bit word.</span>
</span>
<span class="line" id="L88"> <span class="tok-comment">// 2. The least-significant bit prior to truncated mantissa is odd.</span>
</span>
<span class="line" id="L89"> <span class="tok-comment">// 3. All the bits truncated when shifting to mantissa bits + 1 are 0.</span>
</span>
<span class="line" id="L90"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L91"> <span class="tok-comment">// Or, we may fall between two floats: we are exactly halfway.</span>
</span>
<span class="line" id="L92"> <span class="tok-kw">if</span> (r.lo <= <span class="tok-number">1</span> <span class="tok-kw">and</span></span>
<span class="line" id="L93"> q >= float_info.min_exponent_round_to_even <span class="tok-kw">and</span></span>
<span class="line" id="L94"> q <= float_info.max_exponent_round_to_even <span class="tok-kw">and</span></span>
<span class="line" id="L95"> mantissa & <span class="tok-number">3</span> == <span class="tok-number">1</span> <span class="tok-kw">and</span></span>
<span class="line" id="L96"> math.shl(<span class="tok-type">u64</span>, mantissa, (upper_bit + <span class="tok-number">64</span> - <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(float_info.mantissa_explicit_bits)) - <span class="tok-number">3</span>)) == r.hi)</span>
<span class="line" id="L97"> {</span>
<span class="line" id="L98"> <span class="tok-comment">// Zero the lowest bit, so we don't round up.</span>
</span>
<span class="line" id="L99"> mantissa &= ~<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-number">1</span>);</span>
<span class="line" id="L100"> }</span>
<span class="line" id="L101"></span>
<span class="line" id="L102"> <span class="tok-comment">// Round-to-even, then shift the significant digits into place.</span>
</span>
<span class="line" id="L103"> mantissa += mantissa & <span class="tok-number">1</span>;</span>
<span class="line" id="L104"> mantissa >>= <span class="tok-number">1</span>;</span>
<span class="line" id="L105"> <span class="tok-kw">if</span> (mantissa >= <span class="tok-number">2</span> << float_info.mantissa_explicit_bits) {</span>
<span class="line" id="L106"> <span class="tok-comment">// Rounding up overflowed, so the carry bit is set. Set the</span>
</span>
<span class="line" id="L107"> <span class="tok-comment">// mantissa to 1 (only the implicit, hidden bit is set) and</span>
</span>
<span class="line" id="L108"> <span class="tok-comment">// increase the exponent.</span>
</span>
<span class="line" id="L109"> mantissa = <span class="tok-number">1</span> << float_info.mantissa_explicit_bits;</span>
<span class="line" id="L110"> power2 += <span class="tok-number">1</span>;</span>
<span class="line" id="L111"> }</span>
<span class="line" id="L112"></span>
<span class="line" id="L113"> <span class="tok-comment">// Zero out the hidden bit</span>
</span>
<span class="line" id="L114"> mantissa &= ~(<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-number">1</span>) << float_info.mantissa_explicit_bits);</span>
<span class="line" id="L115"> <span class="tok-kw">if</span> (power2 >= float_info.infinite_power) {</span>
<span class="line" id="L116"> <span class="tok-comment">// Exponent is above largest normal value, must be infinite</span>
</span>
<span class="line" id="L117"> <span class="tok-kw">return</span> BiasedFp(<span class="tok-type">f64</span>).inf(T);</span>
<span class="line" id="L118"> }</span>
<span class="line" id="L119"></span>
<span class="line" id="L120"> <span class="tok-kw">return</span> BiasedFp(<span class="tok-type">f64</span>){ .f = mantissa, .e = power2 };</span>
<span class="line" id="L121">}</span>
<span class="line" id="L122"></span>
<span class="line" id="L123"><span class="tok-comment">/// Calculate a base 2 exponent from a decimal exponent.</span></span>
<span class="line" id="L124"><span class="tok-comment">/// This uses a pre-computed integer approximation for</span></span>
<span class="line" id="L125"><span class="tok-comment">/// log2(10), where 217706 / 2^16 is accurate for the</span></span>
<span class="line" id="L126"><span class="tok-comment">/// entire range of non-finite decimal exponents.</span></span>
<span class="line" id="L127"><span class="tok-kw">fn</span> <span class="tok-fn">power</span>(q: <span class="tok-type">i32</span>) <span class="tok-type">i32</span> {</span>
<span class="line" id="L128"> <span class="tok-kw">return</span> ((q *% (<span class="tok-number">152170</span> + <span class="tok-number">65536</span>)) >> <span class="tok-number">16</span>) + <span class="tok-number">63</span>;</span>
<span class="line" id="L129">}</span>
<span class="line" id="L130"></span>
<span class="line" id="L131"><span class="tok-kw">const</span> U128 = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L132"> lo: <span class="tok-type">u64</span>,</span>
<span class="line" id="L133"> hi: <span class="tok-type">u64</span>,</span>
<span class="line" id="L134"></span>
<span class="line" id="L135"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">new</span>(lo: <span class="tok-type">u64</span>, hi: <span class="tok-type">u64</span>) U128 {</span>
<span class="line" id="L136"> <span class="tok-kw">return</span> .{ .lo = lo, .hi = hi };</span>
<span class="line" id="L137"> }</span>
<span class="line" id="L138"></span>
<span class="line" id="L139"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">mul</span>(a: <span class="tok-type">u64</span>, b: <span class="tok-type">u64</span>) U128 {</span>
<span class="line" id="L140"> <span class="tok-kw">const</span> x = <span class="tok-builtin">@as</span>(<span class="tok-type">u128</span>, a) * b;</span>
<span class="line" id="L141"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L142"> .hi = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@truncate</span>(x >> <span class="tok-number">64</span>)),</span>
<span class="line" id="L143"> .lo = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@truncate</span>(x)),</span>
<span class="line" id="L144"> };</span>
<span class="line" id="L145"> }</span>
<span class="line" id="L146">};</span>
<span class="line" id="L147"></span>
<span class="line" id="L148"><span class="tok-comment">// This will compute or rather approximate w * 5**q and return a pair of 64-bit words</span>
</span>
<span class="line" id="L149"><span class="tok-comment">// approximating the result, with the "high" part corresponding to the most significant</span>
</span>
<span class="line" id="L150"><span class="tok-comment">// bits and the low part corresponding to the least significant bits.</span>
</span>
<span class="line" id="L151"><span class="tok-kw">fn</span> <span class="tok-fn">computeProductApprox</span>(q: <span class="tok-type">i64</span>, w: <span class="tok-type">u64</span>, <span class="tok-kw">comptime</span> precision: <span class="tok-type">usize</span>) U128 {</span>
<span class="line" id="L152"> std.debug.assert(q >= eisel_lemire_smallest_power_of_five);</span>
<span class="line" id="L153"> std.debug.assert(q <= eisel_lemire_largest_power_of_five);</span>
<span class="line" id="L154"> std.debug.assert(precision <= <span class="tok-number">64</span>);</span>
<span class="line" id="L155"></span>
<span class="line" id="L156"> <span class="tok-kw">const</span> mask = <span class="tok-kw">if</span> (precision < <span class="tok-number">64</span>)</span>
<span class="line" id="L157"> <span class="tok-number">0xffff_ffff_ffff_ffff</span> >> precision</span>
<span class="line" id="L158"> <span class="tok-kw">else</span></span>
<span class="line" id="L159"> <span class="tok-number">0xffff_ffff_ffff_ffff</span>;</span>
<span class="line" id="L160"></span>
<span class="line" id="L161"> <span class="tok-comment">// 5^q < 2^64, then the multiplication always provides an exact value.</span>
</span>
<span class="line" id="L162"> <span class="tok-comment">// That means whenever we need to round ties to even, we always have</span>
</span>
<span class="line" id="L163"> <span class="tok-comment">// an exact value.</span>
</span>
<span class="line" id="L164"> <span class="tok-kw">const</span> index = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(q - <span class="tok-builtin">@as</span>(<span class="tok-type">i64</span>, <span class="tok-builtin">@intCast</span>(eisel_lemire_smallest_power_of_five))));</span>
<span class="line" id="L165"> <span class="tok-kw">const</span> pow5 = eisel_lemire_table_powers_of_five_128[index];</span>
<span class="line" id="L166"></span>
<span class="line" id="L167"> <span class="tok-comment">// Only need one multiplication as long as there is 1 zero but</span>
</span>
<span class="line" id="L168"> <span class="tok-comment">// in the explicit mantissa bits, +1 for the hidden bit, +1 to</span>
</span>
<span class="line" id="L169"> <span class="tok-comment">// determine the rounding direction, +1 for if the computed</span>
</span>
<span class="line" id="L170"> <span class="tok-comment">// product has a leading zero.</span>
</span>
<span class="line" id="L171"> <span class="tok-kw">var</span> first = U128.mul(w, pow5.lo);</span>
<span class="line" id="L172"> <span class="tok-kw">if</span> (first.hi & mask == mask) {</span>
<span class="line" id="L173"> <span class="tok-comment">// Need to do a second multiplication to get better precision</span>
</span>
<span class="line" id="L174"> <span class="tok-comment">// for the lower product. This will always be exact</span>
</span>
<span class="line" id="L175"> <span class="tok-comment">// where q is < 55, since 5^55 < 2^128. If this wraps,</span>
</span>
<span class="line" id="L176"> <span class="tok-comment">// then we need to need to round up the hi product.</span>
</span>
<span class="line" id="L177"> <span class="tok-kw">const</span> second = U128.mul(w, pow5.hi);</span>
<span class="line" id="L178"></span>
<span class="line" id="L179"> first.lo +%= second.hi;</span>
<span class="line" id="L180"> <span class="tok-kw">if</span> (second.hi > first.lo) {</span>
<span class="line" id="L181"> first.hi += <span class="tok-number">1</span>;</span>
<span class="line" id="L182"> }</span>
<span class="line" id="L183"> }</span>
<span class="line" id="L184"></span>
<span class="line" id="L185"> <span class="tok-kw">return</span> .{ .lo = first.lo, .hi = first.hi };</span>
<span class="line" id="L186">}</span>
<span class="line" id="L187"></span>
<span class="line" id="L188"><span class="tok-comment">// Eisel-Lemire tables ~10Kb</span>
</span>
<span class="line" id="L189"><span class="tok-kw">const</span> eisel_lemire_smallest_power_of_five = -<span class="tok-number">342</span>;</span>
<span class="line" id="L190"><span class="tok-kw">const</span> eisel_lemire_largest_power_of_five = <span class="tok-number">308</span>;</span>
<span class="line" id="L191"><span class="tok-kw">const</span> eisel_lemire_table_powers_of_five_128 = [_]U128{</span>
<span class="line" id="L192"> U128.new(<span class="tok-number">0xeef453d6923bd65a</span>, <span class="tok-number">0x113faa2906a13b3f</span>), <span class="tok-comment">// 5^-342</span>
</span>
<span class="line" id="L193"> U128.new(<span class="tok-number">0x9558b4661b6565f8</span>, <span class="tok-number">0x4ac7ca59a424c507</span>), <span class="tok-comment">// 5^-341</span>
</span>
<span class="line" id="L194"> U128.new(<span class="tok-number">0xbaaee17fa23ebf76</span>, <span class="tok-number">0x5d79bcf00d2df649</span>), <span class="tok-comment">// 5^-340</span>
</span>
<span class="line" id="L195"> U128.new(<span class="tok-number">0xe95a99df8ace6f53</span>, <span class="tok-number">0xf4d82c2c107973dc</span>), <span class="tok-comment">// 5^-339</span>
</span>
<span class="line" id="L196"> U128.new(<span class="tok-number">0x91d8a02bb6c10594</span>, <span class="tok-number">0x79071b9b8a4be869</span>), <span class="tok-comment">// 5^-338</span>
</span>
<span class="line" id="L197"> U128.new(<span class="tok-number">0xb64ec836a47146f9</span>, <span class="tok-number">0x9748e2826cdee284</span>), <span class="tok-comment">// 5^-337</span>
</span>
<span class="line" id="L198"> U128.new(<span class="tok-number">0xe3e27a444d8d98b7</span>, <span class="tok-number">0xfd1b1b2308169b25</span>), <span class="tok-comment">// 5^-336</span>
</span>
<span class="line" id="L199"> U128.new(<span class="tok-number">0x8e6d8c6ab0787f72</span>, <span class="tok-number">0xfe30f0f5e50e20f7</span>), <span class="tok-comment">// 5^-335</span>
</span>
<span class="line" id="L200"> U128.new(<span class="tok-number">0xb208ef855c969f4f</span>, <span class="tok-number">0xbdbd2d335e51a935</span>), <span class="tok-comment">// 5^-334</span>
</span>
<span class="line" id="L201"> U128.new(<span class="tok-number">0xde8b2b66b3bc4723</span>, <span class="tok-number">0xad2c788035e61382</span>), <span class="tok-comment">// 5^-333</span>
</span>
<span class="line" id="L202"> U128.new(<span class="tok-number">0x8b16fb203055ac76</span>, <span class="tok-number">0x4c3bcb5021afcc31</span>), <span class="tok-comment">// 5^-332</span>
</span>
<span class="line" id="L203"> U128.new(<span class="tok-number">0xaddcb9e83c6b1793</span>, <span class="tok-number">0xdf4abe242a1bbf3d</span>), <span class="tok-comment">// 5^-331</span>
</span>
<span class="line" id="L204"> U128.new(<span class="tok-number">0xd953e8624b85dd78</span>, <span class="tok-number">0xd71d6dad34a2af0d</span>), <span class="tok-comment">// 5^-330</span>
</span>
<span class="line" id="L205"> U128.new(<span class="tok-number">0x87d4713d6f33aa6b</span>, <span class="tok-number">0x8672648c40e5ad68</span>), <span class="tok-comment">// 5^-329</span>
</span>
<span class="line" id="L206"> U128.new(<span class="tok-number">0xa9c98d8ccb009506</span>, <span class="tok-number">0x680efdaf511f18c2</span>), <span class="tok-comment">// 5^-328</span>
</span>
<span class="line" id="L207"> U128.new(<span class="tok-number">0xd43bf0effdc0ba48</span>, <span class="tok-number">0x212bd1b2566def2</span>), <span class="tok-comment">// 5^-327</span>
</span>
<span class="line" id="L208"> U128.new(<span class="tok-number">0x84a57695fe98746d</span>, <span class="tok-number">0x14bb630f7604b57</span>), <span class="tok-comment">// 5^-326</span>
</span>
<span class="line" id="L209"> U128.new(<span class="tok-number">0xa5ced43b7e3e9188</span>, <span class="tok-number">0x419ea3bd35385e2d</span>), <span class="tok-comment">// 5^-325</span>
</span>
<span class="line" id="L210"> U128.new(<span class="tok-number">0xcf42894a5dce35ea</span>, <span class="tok-number">0x52064cac828675b9</span>), <span class="tok-comment">// 5^-324</span>
</span>
<span class="line" id="L211"> U128.new(<span class="tok-number">0x818995ce7aa0e1b2</span>, <span class="tok-number">0x7343efebd1940993</span>), <span class="tok-comment">// 5^-323</span>
</span>
<span class="line" id="L212"> U128.new(<span class="tok-number">0xa1ebfb4219491a1f</span>, <span class="tok-number">0x1014ebe6c5f90bf8</span>), <span class="tok-comment">// 5^-322</span>
</span>
<span class="line" id="L213"> U128.new(<span class="tok-number">0xca66fa129f9b60a6</span>, <span class="tok-number">0xd41a26e077774ef6</span>), <span class="tok-comment">// 5^-321</span>
</span>
<span class="line" id="L214"> U128.new(<span class="tok-number">0xfd00b897478238d0</span>, <span class="tok-number">0x8920b098955522b4</span>), <span class="tok-comment">// 5^-320</span>
</span>
<span class="line" id="L215"> U128.new(<span class="tok-number">0x9e20735e8cb16382</span>, <span class="tok-number">0x55b46e5f5d5535b0</span>), <span class="tok-comment">// 5^-319</span>
</span>
<span class="line" id="L216"> U128.new(<span class="tok-number">0xc5a890362fddbc62</span>, <span class="tok-number">0xeb2189f734aa831d</span>), <span class="tok-comment">// 5^-318</span>
</span>
<span class="line" id="L217"> U128.new(<span class="tok-number">0xf712b443bbd52b7b</span>, <span class="tok-number">0xa5e9ec7501d523e4</span>), <span class="tok-comment">// 5^-317</span>
</span>
<span class="line" id="L218"> U128.new(<span class="tok-number">0x9a6bb0aa55653b2d</span>, <span class="tok-number">0x47b233c92125366e</span>), <span class="tok-comment">// 5^-316</span>
</span>
<span class="line" id="L219"> U128.new(<span class="tok-number">0xc1069cd4eabe89f8</span>, <span class="tok-number">0x999ec0bb696e840a</span>), <span class="tok-comment">// 5^-315</span>
</span>
<span class="line" id="L220"> U128.new(<span class="tok-number">0xf148440a256e2c76</span>, <span class="tok-number">0xc00670ea43ca250d</span>), <span class="tok-comment">// 5^-314</span>
</span>
<span class="line" id="L221"> U128.new(<span class="tok-number">0x96cd2a865764dbca</span>, <span class="tok-number">0x380406926a5e5728</span>), <span class="tok-comment">// 5^-313</span>
</span>
<span class="line" id="L222"> U128.new(<span class="tok-number">0xbc807527ed3e12bc</span>, <span class="tok-number">0xc605083704f5ecf2</span>), <span class="tok-comment">// 5^-312</span>
</span>
<span class="line" id="L223"> U128.new(<span class="tok-number">0xeba09271e88d976b</span>, <span class="tok-number">0xf7864a44c633682e</span>), <span class="tok-comment">// 5^-311</span>
</span>
<span class="line" id="L224"> U128.new(<span class="tok-number">0x93445b8731587ea3</span>, <span class="tok-number">0x7ab3ee6afbe0211d</span>), <span class="tok-comment">// 5^-310</span>
</span>
<span class="line" id="L225"> U128.new(<span class="tok-number">0xb8157268fdae9e4c</span>, <span class="tok-number">0x5960ea05bad82964</span>), <span class="tok-comment">// 5^-309</span>
</span>
<span class="line" id="L226"> U128.new(<span class="tok-number">0xe61acf033d1a45df</span>, <span class="tok-number">0x6fb92487298e33bd</span>), <span class="tok-comment">// 5^-308</span>
</span>
<span class="line" id="L227"> U128.new(<span class="tok-number">0x8fd0c16206306bab</span>, <span class="tok-number">0xa5d3b6d479f8e056</span>), <span class="tok-comment">// 5^-307</span>
</span>
<span class="line" id="L228"> U128.new(<span class="tok-number">0xb3c4f1ba87bc8696</span>, <span class="tok-number">0x8f48a4899877186c</span>), <span class="tok-comment">// 5^-306</span>
</span>
<span class="line" id="L229"> U128.new(<span class="tok-number">0xe0b62e2929aba83c</span>, <span class="tok-number">0x331acdabfe94de87</span>), <span class="tok-comment">// 5^-305</span>
</span>
<span class="line" id="L230"> U128.new(<span class="tok-number">0x8c71dcd9ba0b4925</span>, <span class="tok-number">0x9ff0c08b7f1d0b14</span>), <span class="tok-comment">// 5^-304</span>
</span>
<span class="line" id="L231"> U128.new(<span class="tok-number">0xaf8e5410288e1b6f</span>, <span class="tok-number">0x7ecf0ae5ee44dd9</span>), <span class="tok-comment">// 5^-303</span>
</span>
<span class="line" id="L232"> U128.new(<span class="tok-number">0xdb71e91432b1a24a</span>, <span class="tok-number">0xc9e82cd9f69d6150</span>), <span class="tok-comment">// 5^-302</span>
</span>
<span class="line" id="L233"> U128.new(<span class="tok-number">0x892731ac9faf056e</span>, <span class="tok-number">0xbe311c083a225cd2</span>), <span class="tok-comment">// 5^-301</span>
</span>
<span class="line" id="L234"> U128.new(<span class="tok-number">0xab70fe17c79ac6ca</span>, <span class="tok-number">0x6dbd630a48aaf406</span>), <span class="tok-comment">// 5^-300</span>
</span>
<span class="line" id="L235"> U128.new(<span class="tok-number">0xd64d3d9db981787d</span>, <span class="tok-number">0x92cbbccdad5b108</span>), <span class="tok-comment">// 5^-299</span>
</span>
<span class="line" id="L236"> U128.new(<span class="tok-number">0x85f0468293f0eb4e</span>, <span class="tok-number">0x25bbf56008c58ea5</span>), <span class="tok-comment">// 5^-298</span>
</span>
<span class="line" id="L237"> U128.new(<span class="tok-number">0xa76c582338ed2621</span>, <span class="tok-number">0xaf2af2b80af6f24e</span>), <span class="tok-comment">// 5^-297</span>
</span>
<span class="line" id="L238"> U128.new(<span class="tok-number">0xd1476e2c07286faa</span>, <span class="tok-number">0x1af5af660db4aee1</span>), <span class="tok-comment">// 5^-296</span>
</span>
<span class="line" id="L239"> U128.new(<span class="tok-number">0x82cca4db847945ca</span>, <span class="tok-number">0x50d98d9fc890ed4d</span>), <span class="tok-comment">// 5^-295</span>
</span>
<span class="line" id="L240"> U128.new(<span class="tok-number">0xa37fce126597973c</span>, <span class="tok-number">0xe50ff107bab528a0</span>), <span class="tok-comment">// 5^-294</span>
</span>
<span class="line" id="L241"> U128.new(<span class="tok-number">0xcc5fc196fefd7d0c</span>, <span class="tok-number">0x1e53ed49a96272c8</span>), <span class="tok-comment">// 5^-293</span>
</span>
<span class="line" id="L242"> U128.new(<span class="tok-number">0xff77b1fcbebcdc4f</span>, <span class="tok-number">0x25e8e89c13bb0f7a</span>), <span class="tok-comment">// 5^-292</span>
</span>
<span class="line" id="L243"> U128.new(<span class="tok-number">0x9faacf3df73609b1</span>, <span class="tok-number">0x77b191618c54e9ac</span>), <span class="tok-comment">// 5^-291</span>
</span>
<span class="line" id="L244"> U128.new(<span class="tok-number">0xc795830d75038c1d</span>, <span class="tok-number">0xd59df5b9ef6a2417</span>), <span class="tok-comment">// 5^-290</span>
</span>
<span class="line" id="L245"> U128.new(<span class="tok-number">0xf97ae3d0d2446f25</span>, <span class="tok-number">0x4b0573286b44ad1d</span>), <span class="tok-comment">// 5^-289</span>
</span>
<span class="line" id="L246"> U128.new(<span class="tok-number">0x9becce62836ac577</span>, <span class="tok-number">0x4ee367f9430aec32</span>), <span class="tok-comment">// 5^-288</span>
</span>
<span class="line" id="L247"> U128.new(<span class="tok-number">0xc2e801fb244576d5</span>, <span class="tok-number">0x229c41f793cda73f</span>), <span class="tok-comment">// 5^-287</span>
</span>
<span class="line" id="L248"> U128.new(<span class="tok-number">0xf3a20279ed56d48a</span>, <span class="tok-number">0x6b43527578c1110f</span>), <span class="tok-comment">// 5^-286</span>
</span>
<span class="line" id="L249"> U128.new(<span class="tok-number">0x9845418c345644d6</span>, <span class="tok-number">0x830a13896b78aaa9</span>), <span class="tok-comment">// 5^-285</span>
</span>
<span class="line" id="L250"> U128.new(<span class="tok-number">0xbe5691ef416bd60c</span>, <span class="tok-number">0x23cc986bc656d553</span>), <span class="tok-comment">// 5^-284</span>
</span>
<span class="line" id="L251"> U128.new(<span class="tok-number">0xedec366b11c6cb8f</span>, <span class="tok-number">0x2cbfbe86b7ec8aa8</span>), <span class="tok-comment">// 5^-283</span>
</span>
<span class="line" id="L252"> U128.new(<span class="tok-number">0x94b3a202eb1c3f39</span>, <span class="tok-number">0x7bf7d71432f3d6a9</span>), <span class="tok-comment">// 5^-282</span>
</span>
<span class="line" id="L253"> U128.new(<span class="tok-number">0xb9e08a83a5e34f07</span>, <span class="tok-number">0xdaf5ccd93fb0cc53</span>), <span class="tok-comment">// 5^-281</span>
</span>
<span class="line" id="L254"> U128.new(<span class="tok-number">0xe858ad248f5c22c9</span>, <span class="tok-number">0xd1b3400f8f9cff68</span>), <span class="tok-comment">// 5^-280</span>
</span>
<span class="line" id="L255"> U128.new(<span class="tok-number">0x91376c36d99995be</span>, <span class="tok-number">0x23100809b9c21fa1</span>), <span class="tok-comment">// 5^-279</span>
</span>
<span class="line" id="L256"> U128.new(<span class="tok-number">0xb58547448ffffb2d</span>, <span class="tok-number">0xabd40a0c2832a78a</span>), <span class="tok-comment">// 5^-278</span>
</span>
<span class="line" id="L257"> U128.new(<span class="tok-number">0xe2e69915b3fff9f9</span>, <span class="tok-number">0x16c90c8f323f516c</span>), <span class="tok-comment">// 5^-277</span>
</span>
<span class="line" id="L258"> U128.new(<span class="tok-number">0x8dd01fad907ffc3b</span>, <span class="tok-number">0xae3da7d97f6792e3</span>), <span class="tok-comment">// 5^-276</span>
</span>
<span class="line" id="L259"> U128.new(<span class="tok-number">0xb1442798f49ffb4a</span>, <span class="tok-number">0x99cd11cfdf41779c</span>), <span class="tok-comment">// 5^-275</span>
</span>
<span class="line" id="L260"> U128.new(<span class="tok-number">0xdd95317f31c7fa1d</span>, <span class="tok-number">0x40405643d711d583</span>), <span class="tok-comment">// 5^-274</span>
</span>
<span class="line" id="L261"> U128.new(<span class="tok-number">0x8a7d3eef7f1cfc52</span>, <span class="tok-number">0x482835ea666b2572</span>), <span class="tok-comment">// 5^-273</span>
</span>
<span class="line" id="L262"> U128.new(<span class="tok-number">0xad1c8eab5ee43b66</span>, <span class="tok-number">0xda3243650005eecf</span>), <span class="tok-comment">// 5^-272</span>
</span>
<span class="line" id="L263"> U128.new(<span class="tok-number">0xd863b256369d4a40</span>, <span class="tok-number">0x90bed43e40076a82</span>), <span class="tok-comment">// 5^-271</span>
</span>
<span class="line" id="L264"> U128.new(<span class="tok-number">0x873e4f75e2224e68</span>, <span class="tok-number">0x5a7744a6e804a291</span>), <span class="tok-comment">// 5^-270</span>
</span>
<span class="line" id="L265"> U128.new(<span class="tok-number">0xa90de3535aaae202</span>, <span class="tok-number">0x711515d0a205cb36</span>), <span class="tok-comment">// 5^-269</span>
</span>
<span class="line" id="L266"> U128.new(<span class="tok-number">0xd3515c2831559a83</span>, <span class="tok-number">0xd5a5b44ca873e03</span>), <span class="tok-comment">// 5^-268</span>
</span>
<span class="line" id="L267"> U128.new(<span class="tok-number">0x8412d9991ed58091</span>, <span class="tok-number">0xe858790afe9486c2</span>), <span class="tok-comment">// 5^-267</span>
</span>
<span class="line" id="L268"> U128.new(<span class="tok-number">0xa5178fff668ae0b6</span>, <span class="tok-number">0x626e974dbe39a872</span>), <span class="tok-comment">// 5^-266</span>
</span>
<span class="line" id="L269"> U128.new(<span class="tok-number">0xce5d73ff402d98e3</span>, <span class="tok-number">0xfb0a3d212dc8128f</span>), <span class="tok-comment">// 5^-265</span>
</span>
<span class="line" id="L270"> U128.new(<span class="tok-number">0x80fa687f881c7f8e</span>, <span class="tok-number">0x7ce66634bc9d0b99</span>), <span class="tok-comment">// 5^-264</span>
</span>
<span class="line" id="L271"> U128.new(<span class="tok-number">0xa139029f6a239f72</span>, <span class="tok-number">0x1c1fffc1ebc44e80</span>), <span class="tok-comment">// 5^-263</span>
</span>
<span class="line" id="L272"> U128.new(<span class="tok-number">0xc987434744ac874e</span>, <span class="tok-number">0xa327ffb266b56220</span>), <span class="tok-comment">// 5^-262</span>
</span>
<span class="line" id="L273"> U128.new(<span class="tok-number">0xfbe9141915d7a922</span>, <span class="tok-number">0x4bf1ff9f0062baa8</span>), <span class="tok-comment">// 5^-261</span>
</span>
<span class="line" id="L274"> U128.new(<span class="tok-number">0x9d71ac8fada6c9b5</span>, <span class="tok-number">0x6f773fc3603db4a9</span>), <span class="tok-comment">// 5^-260</span>
</span>
<span class="line" id="L275"> U128.new(<span class="tok-number">0xc4ce17b399107c22</span>, <span class="tok-number">0xcb550fb4384d21d3</span>), <span class="tok-comment">// 5^-259</span>
</span>
<span class="line" id="L276"> U128.new(<span class="tok-number">0xf6019da07f549b2b</span>, <span class="tok-number">0x7e2a53a146606a48</span>), <span class="tok-comment">// 5^-258</span>
</span>
<span class="line" id="L277"> U128.new(<span class="tok-number">0x99c102844f94e0fb</span>, <span class="tok-number">0x2eda7444cbfc426d</span>), <span class="tok-comment">// 5^-257</span>
</span>
<span class="line" id="L278"> U128.new(<span class="tok-number">0xc0314325637a1939</span>, <span class="tok-number">0xfa911155fefb5308</span>), <span class="tok-comment">// 5^-256</span>
</span>
<span class="line" id="L279"> U128.new(<span class="tok-number">0xf03d93eebc589f88</span>, <span class="tok-number">0x793555ab7eba27ca</span>), <span class="tok-comment">// 5^-255</span>
</span>
<span class="line" id="L280"> U128.new(<span class="tok-number">0x96267c7535b763b5</span>, <span class="tok-number">0x4bc1558b2f3458de</span>), <span class="tok-comment">// 5^-254</span>
</span>
<span class="line" id="L281"> U128.new(<span class="tok-number">0xbbb01b9283253ca2</span>, <span class="tok-number">0x9eb1aaedfb016f16</span>), <span class="tok-comment">// 5^-253</span>
</span>
<span class="line" id="L282"> U128.new(<span class="tok-number">0xea9c227723ee8bcb</span>, <span class="tok-number">0x465e15a979c1cadc</span>), <span class="tok-comment">// 5^-252</span>
</span>
<span class="line" id="L283"> U128.new(<span class="tok-number">0x92a1958a7675175f</span>, <span class="tok-number">0xbfacd89ec191ec9</span>), <span class="tok-comment">// 5^-251</span>
</span>
<span class="line" id="L284"> U128.new(<span class="tok-number">0xb749faed14125d36</span>, <span class="tok-number">0xcef980ec671f667b</span>), <span class="tok-comment">// 5^-250</span>
</span>
<span class="line" id="L285"> U128.new(<span class="tok-number">0xe51c79a85916f484</span>, <span class="tok-number">0x82b7e12780e7401a</span>), <span class="tok-comment">// 5^-249</span>
</span>
<span class="line" id="L286"> U128.new(<span class="tok-number">0x8f31cc0937ae58d2</span>, <span class="tok-number">0xd1b2ecb8b0908810</span>), <span class="tok-comment">// 5^-248</span>
</span>
<span class="line" id="L287"> U128.new(<span class="tok-number">0xb2fe3f0b8599ef07</span>, <span class="tok-number">0x861fa7e6dcb4aa15</span>), <span class="tok-comment">// 5^-247</span>
</span>
<span class="line" id="L288"> U128.new(<span class="tok-number">0xdfbdcece67006ac9</span>, <span class="tok-number">0x67a791e093e1d49a</span>), <span class="tok-comment">// 5^-246</span>
</span>
<span class="line" id="L289"> U128.new(<span class="tok-number">0x8bd6a141006042bd</span>, <span class="tok-number">0xe0c8bb2c5c6d24e0</span>), <span class="tok-comment">// 5^-245</span>
</span>
<span class="line" id="L290"> U128.new(<span class="tok-number">0xaecc49914078536d</span>, <span class="tok-number">0x58fae9f773886e18</span>), <span class="tok-comment">// 5^-244</span>
</span>
<span class="line" id="L291"> U128.new(<span class="tok-number">0xda7f5bf590966848</span>, <span class="tok-number">0xaf39a475506a899e</span>), <span class="tok-comment">// 5^-243</span>
</span>
<span class="line" id="L292"> U128.new(<span class="tok-number">0x888f99797a5e012d</span>, <span class="tok-number">0x6d8406c952429603</span>), <span class="tok-comment">// 5^-242</span>
</span>
<span class="line" id="L293"> U128.new(<span class="tok-number">0xaab37fd7d8f58178</span>, <span class="tok-number">0xc8e5087ba6d33b83</span>), <span class="tok-comment">// 5^-241</span>
</span>
<span class="line" id="L294"> U128.new(<span class="tok-number">0xd5605fcdcf32e1d6</span>, <span class="tok-number">0xfb1e4a9a90880a64</span>), <span class="tok-comment">// 5^-240</span>
</span>
<span class="line" id="L295"> U128.new(<span class="tok-number">0x855c3be0a17fcd26</span>, <span class="tok-number">0x5cf2eea09a55067f</span>), <span class="tok-comment">// 5^-239</span>
</span>
<span class="line" id="L296"> U128.new(<span class="tok-number">0xa6b34ad8c9dfc06f</span>, <span class="tok-number">0xf42faa48c0ea481e</span>), <span class="tok-comment">// 5^-238</span>
</span>
<span class="line" id="L297"> U128.new(<span class="tok-number">0xd0601d8efc57b08b</span>, <span class="tok-number">0xf13b94daf124da26</span>), <span class="tok-comment">// 5^-237</span>
</span>
<span class="line" id="L298"> U128.new(<span class="tok-number">0x823c12795db6ce57</span>, <span class="tok-number">0x76c53d08d6b70858</span>), <span class="tok-comment">// 5^-236</span>
</span>
<span class="line" id="L299"> U128.new(<span class="tok-number">0xa2cb1717b52481ed</span>, <span class="tok-number">0x54768c4b0c64ca6e</span>), <span class="tok-comment">// 5^-235</span>
</span>
<span class="line" id="L300"> U128.new(<span class="tok-number">0xcb7ddcdda26da268</span>, <span class="tok-number">0xa9942f5dcf7dfd09</span>), <span class="tok-comment">// 5^-234</span>
</span>
<span class="line" id="L301"> U128.new(<span class="tok-number">0xfe5d54150b090b02</span>, <span class="tok-number">0xd3f93b35435d7c4c</span>), <span class="tok-comment">// 5^-233</span>
</span>
<span class="line" id="L302"> U128.new(<span class="tok-number">0x9efa548d26e5a6e1</span>, <span class="tok-number">0xc47bc5014a1a6daf</span>), <span class="tok-comment">// 5^-232</span>
</span>
<span class="line" id="L303"> U128.new(<span class="tok-number">0xc6b8e9b0709f109a</span>, <span class="tok-number">0x359ab6419ca1091b</span>), <span class="tok-comment">// 5^-231</span>
</span>
<span class="line" id="L304"> U128.new(<span class="tok-number">0xf867241c8cc6d4c0</span>, <span class="tok-number">0xc30163d203c94b62</span>), <span class="tok-comment">// 5^-230</span>
</span>
<span class="line" id="L305"> U128.new(<span class="tok-number">0x9b407691d7fc44f8</span>, <span class="tok-number">0x79e0de63425dcf1d</span>), <span class="tok-comment">// 5^-229</span>
</span>
<span class="line" id="L306"> U128.new(<span class="tok-number">0xc21094364dfb5636</span>, <span class="tok-number">0x985915fc12f542e4</span>), <span class="tok-comment">// 5^-228</span>
</span>
<span class="line" id="L307"> U128.new(<span class="tok-number">0xf294b943e17a2bc4</span>, <span class="tok-number">0x3e6f5b7b17b2939d</span>), <span class="tok-comment">// 5^-227</span>
</span>
<span class="line" id="L308"> U128.new(<span class="tok-number">0x979cf3ca6cec5b5a</span>, <span class="tok-number">0xa705992ceecf9c42</span>), <span class="tok-comment">// 5^-226</span>
</span>
<span class="line" id="L309"> U128.new(<span class="tok-number">0xbd8430bd08277231</span>, <span class="tok-number">0x50c6ff782a838353</span>), <span class="tok-comment">// 5^-225</span>
</span>
<span class="line" id="L310"> U128.new(<span class="tok-number">0xece53cec4a314ebd</span>, <span class="tok-number">0xa4f8bf5635246428</span>), <span class="tok-comment">// 5^-224</span>
</span>
<span class="line" id="L311"> U128.new(<span class="tok-number">0x940f4613ae5ed136</span>, <span class="tok-number">0x871b7795e136be99</span>), <span class="tok-comment">// 5^-223</span>
</span>
<span class="line" id="L312"> U128.new(<span class="tok-number">0xb913179899f68584</span>, <span class="tok-number">0x28e2557b59846e3f</span>), <span class="tok-comment">// 5^-222</span>
</span>
<span class="line" id="L313"> U128.new(<span class="tok-number">0xe757dd7ec07426e5</span>, <span class="tok-number">0x331aeada2fe589cf</span>), <span class="tok-comment">// 5^-221</span>
</span>
<span class="line" id="L314"> U128.new(<span class="tok-number">0x9096ea6f3848984f</span>, <span class="tok-number">0x3ff0d2c85def7621</span>), <span class="tok-comment">// 5^-220</span>
</span>
<span class="line" id="L315"> U128.new(<span class="tok-number">0xb4bca50b065abe63</span>, <span class="tok-number">0xfed077a756b53a9</span>), <span class="tok-comment">// 5^-219</span>
</span>
<span class="line" id="L316"> U128.new(<span class="tok-number">0xe1ebce4dc7f16dfb</span>, <span class="tok-number">0xd3e8495912c62894</span>), <span class="tok-comment">// 5^-218</span>
</span>
<span class="line" id="L317"> U128.new(<span class="tok-number">0x8d3360f09cf6e4bd</span>, <span class="tok-number">0x64712dd7abbbd95c</span>), <span class="tok-comment">// 5^-217</span>
</span>
<span class="line" id="L318"> U128.new(<span class="tok-number">0xb080392cc4349dec</span>, <span class="tok-number">0xbd8d794d96aacfb3</span>), <span class="tok-comment">// 5^-216</span>
</span>
<span class="line" id="L319"> U128.new(<span class="tok-number">0xdca04777f541c567</span>, <span class="tok-number">0xecf0d7a0fc5583a0</span>), <span class="tok-comment">// 5^-215</span>
</span>
<span class="line" id="L320"> U128.new(<span class="tok-number">0x89e42caaf9491b60</span>, <span class="tok-number">0xf41686c49db57244</span>), <span class="tok-comment">// 5^-214</span>
</span>
<span class="line" id="L321"> U128.new(<span class="tok-number">0xac5d37d5b79b6239</span>, <span class="tok-number">0x311c2875c522ced5</span>), <span class="tok-comment">// 5^-213</span>
</span>
<span class="line" id="L322"> U128.new(<span class="tok-number">0xd77485cb25823ac7</span>, <span class="tok-number">0x7d633293366b828b</span>), <span class="tok-comment">// 5^-212</span>
</span>
<span class="line" id="L323"> U128.new(<span class="tok-number">0x86a8d39ef77164bc</span>, <span class="tok-number">0xae5dff9c02033197</span>), <span class="tok-comment">// 5^-211</span>
</span>
<span class="line" id="L324"> U128.new(<span class="tok-number">0xa8530886b54dbdeb</span>, <span class="tok-number">0xd9f57f830283fdfc</span>), <span class="tok-comment">// 5^-210</span>
</span>
<span class="line" id="L325"> U128.new(<span class="tok-number">0xd267caa862a12d66</span>, <span class="tok-number">0xd072df63c324fd7b</span>), <span class="tok-comment">// 5^-209</span>
</span>
<span class="line" id="L326"> U128.new(<span class="tok-number">0x8380dea93da4bc60</span>, <span class="tok-number">0x4247cb9e59f71e6d</span>), <span class="tok-comment">// 5^-208</span>
</span>
<span class="line" id="L327"> U128.new(<span class="tok-number">0xa46116538d0deb78</span>, <span class="tok-number">0x52d9be85f074e608</span>), <span class="tok-comment">// 5^-207</span>
</span>
<span class="line" id="L328"> U128.new(<span class="tok-number">0xcd795be870516656</span>, <span class="tok-number">0x67902e276c921f8b</span>), <span class="tok-comment">// 5^-206</span>
</span>
<span class="line" id="L329"> U128.new(<span class="tok-number">0x806bd9714632dff6</span>, <span class="tok-number">0xba1cd8a3db53b6</span>), <span class="tok-comment">// 5^-205</span>
</span>
<span class="line" id="L330"> U128.new(<span class="tok-number">0xa086cfcd97bf97f3</span>, <span class="tok-number">0x80e8a40eccd228a4</span>), <span class="tok-comment">// 5^-204</span>
</span>
<span class="line" id="L331"> U128.new(<span class="tok-number">0xc8a883c0fdaf7df0</span>, <span class="tok-number">0x6122cd128006b2cd</span>), <span class="tok-comment">// 5^-203</span>
</span>
<span class="line" id="L332"> U128.new(<span class="tok-number">0xfad2a4b13d1b5d6c</span>, <span class="tok-number">0x796b805720085f81</span>), <span class="tok-comment">// 5^-202</span>
</span>
<span class="line" id="L333"> U128.new(<span class="tok-number">0x9cc3a6eec6311a63</span>, <span class="tok-number">0xcbe3303674053bb0</span>), <span class="tok-comment">// 5^-201</span>
</span>
<span class="line" id="L334"> U128.new(<span class="tok-number">0xc3f490aa77bd60fc</span>, <span class="tok-number">0xbedbfc4411068a9c</span>), <span class="tok-comment">// 5^-200</span>
</span>
<span class="line" id="L335"> U128.new(<span class="tok-number">0xf4f1b4d515acb93b</span>, <span class="tok-number">0xee92fb5515482d44</span>), <span class="tok-comment">// 5^-199</span>
</span>
<span class="line" id="L336"> U128.new(<span class="tok-number">0x991711052d8bf3c5</span>, <span class="tok-number">0x751bdd152d4d1c4a</span>), <span class="tok-comment">// 5^-198</span>
</span>
<span class="line" id="L337"> U128.new(<span class="tok-number">0xbf5cd54678eef0b6</span>, <span class="tok-number">0xd262d45a78a0635d</span>), <span class="tok-comment">// 5^-197</span>
</span>
<span class="line" id="L338"> U128.new(<span class="tok-number">0xef340a98172aace4</span>, <span class="tok-number">0x86fb897116c87c34</span>), <span class="tok-comment">// 5^-196</span>
</span>
<span class="line" id="L339"> U128.new(<span class="tok-number">0x9580869f0e7aac0e</span>, <span class="tok-number">0xd45d35e6ae3d4da0</span>), <span class="tok-comment">// 5^-195</span>
</span>
<span class="line" id="L340"> U128.new(<span class="tok-number">0xbae0a846d2195712</span>, <span class="tok-number">0x8974836059cca109</span>), <span class="tok-comment">// 5^-194</span>
</span>
<span class="line" id="L341"> U128.new(<span class="tok-number">0xe998d258869facd7</span>, <span class="tok-number">0x2bd1a438703fc94b</span>), <span class="tok-comment">// 5^-193</span>
</span>
<span class="line" id="L342"> U128.new(<span class="tok-number">0x91ff83775423cc06</span>, <span class="tok-number">0x7b6306a34627ddcf</span>), <span class="tok-comment">// 5^-192</span>
</span>
<span class="line" id="L343"> U128.new(<span class="tok-number">0xb67f6455292cbf08</span>, <span class="tok-number">0x1a3bc84c17b1d542</span>), <span class="tok-comment">// 5^-191</span>
</span>
<span class="line" id="L344"> U128.new(<span class="tok-number">0xe41f3d6a7377eeca</span>, <span class="tok-number">0x20caba5f1d9e4a93</span>), <span class="tok-comment">// 5^-190</span>
</span>
<span class="line" id="L345"> U128.new(<span class="tok-number">0x8e938662882af53e</span>, <span class="tok-number">0x547eb47b7282ee9c</span>), <span class="tok-comment">// 5^-189</span>
</span>
<span class="line" id="L346"> U128.new(<span class="tok-number">0xb23867fb2a35b28d</span>, <span class="tok-number">0xe99e619a4f23aa43</span>), <span class="tok-comment">// 5^-188</span>
</span>
<span class="line" id="L347"> U128.new(<span class="tok-number">0xdec681f9f4c31f31</span>, <span class="tok-number">0x6405fa00e2ec94d4</span>), <span class="tok-comment">// 5^-187</span>
</span>
<span class="line" id="L348"> U128.new(<span class="tok-number">0x8b3c113c38f9f37e</span>, <span class="tok-number">0xde83bc408dd3dd04</span>), <span class="tok-comment">// 5^-186</span>
</span>
<span class="line" id="L349"> U128.new(<span class="tok-number">0xae0b158b4738705e</span>, <span class="tok-number">0x9624ab50b148d445</span>), <span class="tok-comment">// 5^-185</span>
</span>
<span class="line" id="L350"> U128.new(<span class="tok-number">0xd98ddaee19068c76</span>, <span class="tok-number">0x3badd624dd9b0957</span>), <span class="tok-comment">// 5^-184</span>
</span>
<span class="line" id="L351"> U128.new(<span class="tok-number">0x87f8a8d4cfa417c9</span>, <span class="tok-number">0xe54ca5d70a80e5d6</span>), <span class="tok-comment">// 5^-183</span>
</span>
<span class="line" id="L352"> U128.new(<span class="tok-number">0xa9f6d30a038d1dbc</span>, <span class="tok-number">0x5e9fcf4ccd211f4c</span>), <span class="tok-comment">// 5^-182</span>
</span>
<span class="line" id="L353"> U128.new(<span class="tok-number">0xd47487cc8470652b</span>, <span class="tok-number">0x7647c3200069671f</span>), <span class="tok-comment">// 5^-181</span>
</span>
<span class="line" id="L354"> U128.new(<span class="tok-number">0x84c8d4dfd2c63f3b</span>, <span class="tok-number">0x29ecd9f40041e073</span>), <span class="tok-comment">// 5^-180</span>
</span>
<span class="line" id="L355"> U128.new(<span class="tok-number">0xa5fb0a17c777cf09</span>, <span class="tok-number">0xf468107100525890</span>), <span class="tok-comment">// 5^-179</span>
</span>
<span class="line" id="L356"> U128.new(<span class="tok-number">0xcf79cc9db955c2cc</span>, <span class="tok-number">0x7182148d4066eeb4</span>), <span class="tok-comment">// 5^-178</span>
</span>
<span class="line" id="L357"> U128.new(<span class="tok-number">0x81ac1fe293d599bf</span>, <span class="tok-number">0xc6f14cd848405530</span>), <span class="tok-comment">// 5^-177</span>
</span>
<span class="line" id="L358"> U128.new(<span class="tok-number">0xa21727db38cb002f</span>, <span class="tok-number">0xb8ada00e5a506a7c</span>), <span class="tok-comment">// 5^-176</span>
</span>
<span class="line" id="L359"> U128.new(<span class="tok-number">0xca9cf1d206fdc03b</span>, <span class="tok-number">0xa6d90811f0e4851c</span>), <span class="tok-comment">// 5^-175</span>
</span>
<span class="line" id="L360"> U128.new(<span class="tok-number">0xfd442e4688bd304a</span>, <span class="tok-number">0x908f4a166d1da663</span>), <span class="tok-comment">// 5^-174</span>
</span>
<span class="line" id="L361"> U128.new(<span class="tok-number">0x9e4a9cec15763e2e</span>, <span class="tok-number">0x9a598e4e043287fe</span>), <span class="tok-comment">// 5^-173</span>
</span>
<span class="line" id="L362"> U128.new(<span class="tok-number">0xc5dd44271ad3cdba</span>, <span class="tok-number">0x40eff1e1853f29fd</span>), <span class="tok-comment">// 5^-172</span>
</span>
<span class="line" id="L363"> U128.new(<span class="tok-number">0xf7549530e188c128</span>, <span class="tok-number">0xd12bee59e68ef47c</span>), <span class="tok-comment">// 5^-171</span>
</span>
<span class="line" id="L364"> U128.new(<span class="tok-number">0x9a94dd3e8cf578b9</span>, <span class="tok-number">0x82bb74f8301958ce</span>), <span class="tok-comment">// 5^-170</span>
</span>
<span class="line" id="L365"> U128.new(<span class="tok-number">0xc13a148e3032d6e7</span>, <span class="tok-number">0xe36a52363c1faf01</span>), <span class="tok-comment">// 5^-169</span>
</span>
<span class="line" id="L366"> U128.new(<span class="tok-number">0xf18899b1bc3f8ca1</span>, <span class="tok-number">0xdc44e6c3cb279ac1</span>), <span class="tok-comment">// 5^-168</span>
</span>
<span class="line" id="L367"> U128.new(<span class="tok-number">0x96f5600f15a7b7e5</span>, <span class="tok-number">0x29ab103a5ef8c0b9</span>), <span class="tok-comment">// 5^-167</span>
</span>
<span class="line" id="L368"> U128.new(<span class="tok-number">0xbcb2b812db11a5de</span>, <span class="tok-number">0x7415d448f6b6f0e7</span>), <span class="tok-comment">// 5^-166</span>
</span>
<span class="line" id="L369"> U128.new(<span class="tok-number">0xebdf661791d60f56</span>, <span class="tok-number">0x111b495b3464ad21</span>), <span class="tok-comment">// 5^-165</span>
</span>
<span class="line" id="L370"> U128.new(<span class="tok-number">0x936b9fcebb25c995</span>, <span class="tok-number">0xcab10dd900beec34</span>), <span class="tok-comment">// 5^-164</span>
</span>
<span class="line" id="L371"> U128.new(<span class="tok-number">0xb84687c269ef3bfb</span>, <span class="tok-number">0x3d5d514f40eea742</span>), <span class="tok-comment">// 5^-163</span>
</span>
<span class="line" id="L372"> U128.new(<span class="tok-number">0xe65829b3046b0afa</span>, <span class="tok-number">0xcb4a5a3112a5112</span>), <span class="tok-comment">// 5^-162</span>
</span>
<span class="line" id="L373"> U128.new(<span class="tok-number">0x8ff71a0fe2c2e6dc</span>, <span class="tok-number">0x47f0e785eaba72ab</span>), <span class="tok-comment">// 5^-161</span>
</span>
<span class="line" id="L374"> U128.new(<span class="tok-number">0xb3f4e093db73a093</span>, <span class="tok-number">0x59ed216765690f56</span>), <span class="tok-comment">// 5^-160</span>
</span>
<span class="line" id="L375"> U128.new(<span class="tok-number">0xe0f218b8d25088b8</span>, <span class="tok-number">0x306869c13ec3532c</span>), <span class="tok-comment">// 5^-159</span>
</span>
<span class="line" id="L376"> U128.new(<span class="tok-number">0x8c974f7383725573</span>, <span class="tok-number">0x1e414218c73a13fb</span>), <span class="tok-comment">// 5^-158</span>
</span>
<span class="line" id="L377"> U128.new(<span class="tok-number">0xafbd2350644eeacf</span>, <span class="tok-number">0xe5d1929ef90898fa</span>), <span class="tok-comment">// 5^-157</span>
</span>
<span class="line" id="L378"> U128.new(<span class="tok-number">0xdbac6c247d62a583</span>, <span class="tok-number">0xdf45f746b74abf39</span>), <span class="tok-comment">// 5^-156</span>
</span>
<span class="line" id="L379"> U128.new(<span class="tok-number">0x894bc396ce5da772</span>, <span class="tok-number">0x6b8bba8c328eb783</span>), <span class="tok-comment">// 5^-155</span>
</span>
<span class="line" id="L380"> U128.new(<span class="tok-number">0xab9eb47c81f5114f</span>, <span class="tok-number">0x66ea92f3f326564</span>), <span class="tok-comment">// 5^-154</span>
</span>
<span class="line" id="L381"> U128.new(<span class="tok-number">0xd686619ba27255a2</span>, <span class="tok-number">0xc80a537b0efefebd</span>), <span class="tok-comment">// 5^-153</span>
</span>
<span class="line" id="L382"> U128.new(<span class="tok-number">0x8613fd0145877585</span>, <span class="tok-number">0xbd06742ce95f5f36</span>), <span class="tok-comment">// 5^-152</span>
</span>
<span class="line" id="L383"> U128.new(<span class="tok-number">0xa798fc4196e952e7</span>, <span class="tok-number">0x2c48113823b73704</span>), <span class="tok-comment">// 5^-151</span>
</span>
<span class="line" id="L384"> U128.new(<span class="tok-number">0xd17f3b51fca3a7a0</span>, <span class="tok-number">0xf75a15862ca504c5</span>), <span class="tok-comment">// 5^-150</span>
</span>
<span class="line" id="L385"> U128.new(<span class="tok-number">0x82ef85133de648c4</span>, <span class="tok-number">0x9a984d73dbe722fb</span>), <span class="tok-comment">// 5^-149</span>
</span>
<span class="line" id="L386"> U128.new(<span class="tok-number">0xa3ab66580d5fdaf5</span>, <span class="tok-number">0xc13e60d0d2e0ebba</span>), <span class="tok-comment">// 5^-148</span>
</span>
<span class="line" id="L387"> U128.new(<span class="tok-number">0xcc963fee10b7d1b3</span>, <span class="tok-number">0x318df905079926a8</span>), <span class="tok-comment">// 5^-147</span>
</span>
<span class="line" id="L388"> U128.new(<span class="tok-number">0xffbbcfe994e5c61f</span>, <span class="tok-number">0xfdf17746497f7052</span>), <span class="tok-comment">// 5^-146</span>
</span>
<span class="line" id="L389"> U128.new(<span class="tok-number">0x9fd561f1fd0f9bd3</span>, <span class="tok-number">0xfeb6ea8bedefa633</span>), <span class="tok-comment">// 5^-145</span>
</span>
<span class="line" id="L390"> U128.new(<span class="tok-number">0xc7caba6e7c5382c8</span>, <span class="tok-number">0xfe64a52ee96b8fc0</span>), <span class="tok-comment">// 5^-144</span>
</span>
<span class="line" id="L391"> U128.new(<span class="tok-number">0xf9bd690a1b68637b</span>, <span class="tok-number">0x3dfdce7aa3c673b0</span>), <span class="tok-comment">// 5^-143</span>
</span>
<span class="line" id="L392"> U128.new(<span class="tok-number">0x9c1661a651213e2d</span>, <span class="tok-number">0x6bea10ca65c084e</span>), <span class="tok-comment">// 5^-142</span>
</span>
<span class="line" id="L393"> U128.new(<span class="tok-number">0xc31bfa0fe5698db8</span>, <span class="tok-number">0x486e494fcff30a62</span>), <span class="tok-comment">// 5^-141</span>
</span>
<span class="line" id="L394"> U128.new(<span class="tok-number">0xf3e2f893dec3f126</span>, <span class="tok-number">0x5a89dba3c3efccfa</span>), <span class="tok-comment">// 5^-140</span>
</span>
<span class="line" id="L395"> U128.new(<span class="tok-number">0x986ddb5c6b3a76b7</span>, <span class="tok-number">0xf89629465a75e01c</span>), <span class="tok-comment">// 5^-139</span>
</span>
<span class="line" id="L396"> U128.new(<span class="tok-number">0xbe89523386091465</span>, <span class="tok-number">0xf6bbb397f1135823</span>), <span class="tok-comment">// 5^-138</span>
</span>
<span class="line" id="L397"> U128.new(<span class="tok-number">0xee2ba6c0678b597f</span>, <span class="tok-number">0x746aa07ded582e2c</span>), <span class="tok-comment">// 5^-137</span>
</span>
<span class="line" id="L398"> U128.new(<span class="tok-number">0x94db483840b717ef</span>, <span class="tok-number">0xa8c2a44eb4571cdc</span>), <span class="tok-comment">// 5^-136</span>
</span>
<span class="line" id="L399"> U128.new(<span class="tok-number">0xba121a4650e4ddeb</span>, <span class="tok-number">0x92f34d62616ce413</span>), <span class="tok-comment">// 5^-135</span>
</span>
<span class="line" id="L400"> U128.new(<span class="tok-number">0xe896a0d7e51e1566</span>, <span class="tok-number">0x77b020baf9c81d17</span>), <span class="tok-comment">// 5^-134</span>
</span>
<span class="line" id="L401"> U128.new(<span class="tok-number">0x915e2486ef32cd60</span>, <span class="tok-number">0xace1474dc1d122e</span>), <span class="tok-comment">// 5^-133</span>
</span>
<span class="line" id="L402"> U128.new(<span class="tok-number">0xb5b5ada8aaff80b8</span>, <span class="tok-number">0xd819992132456ba</span>), <span class="tok-comment">// 5^-132</span>
</span>
<span class="line" id="L403"> U128.new(<span class="tok-number">0xe3231912d5bf60e6</span>, <span class="tok-number">0x10e1fff697ed6c69</span>), <span class="tok-comment">// 5^-131</span>
</span>
<span class="line" id="L404"> U128.new(<span class="tok-number">0x8df5efabc5979c8f</span>, <span class="tok-number">0xca8d3ffa1ef463c1</span>), <span class="tok-comment">// 5^-130</span>
</span>
<span class="line" id="L405"> U128.new(<span class="tok-number">0xb1736b96b6fd83b3</span>, <span class="tok-number">0xbd308ff8a6b17cb2</span>), <span class="tok-comment">// 5^-129</span>
</span>
<span class="line" id="L406"> U128.new(<span class="tok-number">0xddd0467c64bce4a0</span>, <span class="tok-number">0xac7cb3f6d05ddbde</span>), <span class="tok-comment">// 5^-128</span>
</span>
<span class="line" id="L407"> U128.new(<span class="tok-number">0x8aa22c0dbef60ee4</span>, <span class="tok-number">0x6bcdf07a423aa96b</span>), <span class="tok-comment">// 5^-127</span>
</span>
<span class="line" id="L408"> U128.new(<span class="tok-number">0xad4ab7112eb3929d</span>, <span class="tok-number">0x86c16c98d2c953c6</span>), <span class="tok-comment">// 5^-126</span>
</span>
<span class="line" id="L409"> U128.new(<span class="tok-number">0xd89d64d57a607744</span>, <span class="tok-number">0xe871c7bf077ba8b7</span>), <span class="tok-comment">// 5^-125</span>
</span>
<span class="line" id="L410"> U128.new(<span class="tok-number">0x87625f056c7c4a8b</span>, <span class="tok-number">0x11471cd764ad4972</span>), <span class="tok-comment">// 5^-124</span>
</span>
<span class="line" id="L411"> U128.new(<span class="tok-number">0xa93af6c6c79b5d2d</span>, <span class="tok-number">0xd598e40d3dd89bcf</span>), <span class="tok-comment">// 5^-123</span>
</span>
<span class="line" id="L412"> U128.new(<span class="tok-number">0xd389b47879823479</span>, <span class="tok-number">0x4aff1d108d4ec2c3</span>), <span class="tok-comment">// 5^-122</span>
</span>
<span class="line" id="L413"> U128.new(<span class="tok-number">0x843610cb4bf160cb</span>, <span class="tok-number">0xcedf722a585139ba</span>), <span class="tok-comment">// 5^-121</span>
</span>
<span class="line" id="L414"> U128.new(<span class="tok-number">0xa54394fe1eedb8fe</span>, <span class="tok-number">0xc2974eb4ee658828</span>), <span class="tok-comment">// 5^-120</span>
</span>
<span class="line" id="L415"> U128.new(<span class="tok-number">0xce947a3da6a9273e</span>, <span class="tok-number">0x733d226229feea32</span>), <span class="tok-comment">// 5^-119</span>
</span>
<span class="line" id="L416"> U128.new(<span class="tok-number">0x811ccc668829b887</span>, <span class="tok-number">0x806357d5a3f525f</span>), <span class="tok-comment">// 5^-118</span>
</span>
<span class="line" id="L417"> U128.new(<span class="tok-number">0xa163ff802a3426a8</span>, <span class="tok-number">0xca07c2dcb0cf26f7</span>), <span class="tok-comment">// 5^-117</span>
</span>
<span class="line" id="L418"> U128.new(<span class="tok-number">0xc9bcff6034c13052</span>, <span class="tok-number">0xfc89b393dd02f0b5</span>), <span class="tok-comment">// 5^-116</span>
</span>
<span class="line" id="L419"> U128.new(<span class="tok-number">0xfc2c3f3841f17c67</span>, <span class="tok-number">0xbbac2078d443ace2</span>), <span class="tok-comment">// 5^-115</span>
</span>
<span class="line" id="L420"> U128.new(<span class="tok-number">0x9d9ba7832936edc0</span>, <span class="tok-number">0xd54b944b84aa4c0d</span>), <span class="tok-comment">// 5^-114</span>
</span>
<span class="line" id="L421"> U128.new(<span class="tok-number">0xc5029163f384a931</span>, <span class="tok-number">0xa9e795e65d4df11</span>), <span class="tok-comment">// 5^-113</span>
</span>
<span class="line" id="L422"> U128.new(<span class="tok-number">0xf64335bcf065d37d</span>, <span class="tok-number">0x4d4617b5ff4a16d5</span>), <span class="tok-comment">// 5^-112</span>
</span>
<span class="line" id="L423"> U128.new(<span class="tok-number">0x99ea0196163fa42e</span>, <span class="tok-number">0x504bced1bf8e4e45</span>), <span class="tok-comment">// 5^-111</span>
</span>
<span class="line" id="L424"> U128.new(<span class="tok-number">0xc06481fb9bcf8d39</span>, <span class="tok-number">0xe45ec2862f71e1d6</span>), <span class="tok-comment">// 5^-110</span>
</span>
<span class="line" id="L425"> U128.new(<span class="tok-number">0xf07da27a82c37088</span>, <span class="tok-number">0x5d767327bb4e5a4c</span>), <span class="tok-comment">// 5^-109</span>
</span>
<span class="line" id="L426"> U128.new(<span class="tok-number">0x964e858c91ba2655</span>, <span class="tok-number">0x3a6a07f8d510f86f</span>), <span class="tok-comment">// 5^-108</span>
</span>
<span class="line" id="L427"> U128.new(<span class="tok-number">0xbbe226efb628afea</span>, <span class="tok-number">0x890489f70a55368b</span>), <span class="tok-comment">// 5^-107</span>
</span>
<span class="line" id="L428"> U128.new(<span class="tok-number">0xeadab0aba3b2dbe5</span>, <span class="tok-number">0x2b45ac74ccea842e</span>), <span class="tok-comment">// 5^-106</span>
</span>
<span class="line" id="L429"> U128.new(<span class="tok-number">0x92c8ae6b464fc96f</span>, <span class="tok-number">0x3b0b8bc90012929d</span>), <span class="tok-comment">// 5^-105</span>
</span>
<span class="line" id="L430"> U128.new(<span class="tok-number">0xb77ada0617e3bbcb</span>, <span class="tok-number">0x9ce6ebb40173744</span>), <span class="tok-comment">// 5^-104</span>
</span>
<span class="line" id="L431"> U128.new(<span class="tok-number">0xe55990879ddcaabd</span>, <span class="tok-number">0xcc420a6a101d0515</span>), <span class="tok-comment">// 5^-103</span>
</span>
<span class="line" id="L432"> U128.new(<span class="tok-number">0x8f57fa54c2a9eab6</span>, <span class="tok-number">0x9fa946824a12232d</span>), <span class="tok-comment">// 5^-102</span>
</span>
<span class="line" id="L433"> U128.new(<span class="tok-number">0xb32df8e9f3546564</span>, <span class="tok-number">0x47939822dc96abf9</span>), <span class="tok-comment">// 5^-101</span>
</span>
<span class="line" id="L434"> U128.new(<span class="tok-number">0xdff9772470297ebd</span>, <span class="tok-number">0x59787e2b93bc56f7</span>), <span class="tok-comment">// 5^-100</span>
</span>
<span class="line" id="L435"> U128.new(<span class="tok-number">0x8bfbea76c619ef36</span>, <span class="tok-number">0x57eb4edb3c55b65a</span>), <span class="tok-comment">// 5^-99</span>
</span>
<span class="line" id="L436"> U128.new(<span class="tok-number">0xaefae51477a06b03</span>, <span class="tok-number">0xede622920b6b23f1</span>), <span class="tok-comment">// 5^-98</span>
</span>
<span class="line" id="L437"> U128.new(<span class="tok-number">0xdab99e59958885c4</span>, <span class="tok-number">0xe95fab368e45eced</span>), <span class="tok-comment">// 5^-97</span>
</span>
<span class="line" id="L438"> U128.new(<span class="tok-number">0x88b402f7fd75539b</span>, <span class="tok-number">0x11dbcb0218ebb414</span>), <span class="tok-comment">// 5^-96</span>
</span>
<span class="line" id="L439"> U128.new(<span class="tok-number">0xaae103b5fcd2a881</span>, <span class="tok-number">0xd652bdc29f26a119</span>), <span class="tok-comment">// 5^-95</span>
</span>
<span class="line" id="L440"> U128.new(<span class="tok-number">0xd59944a37c0752a2</span>, <span class="tok-number">0x4be76d3346f0495f</span>), <span class="tok-comment">// 5^-94</span>
</span>
<span class="line" id="L441"> U128.new(<span class="tok-number">0x857fcae62d8493a5</span>, <span class="tok-number">0x6f70a4400c562ddb</span>), <span class="tok-comment">// 5^-93</span>
</span>
<span class="line" id="L442"> U128.new(<span class="tok-number">0xa6dfbd9fb8e5b88e</span>, <span class="tok-number">0xcb4ccd500f6bb952</span>), <span class="tok-comment">// 5^-92</span>
</span>
<span class="line" id="L443"> U128.new(<span class="tok-number">0xd097ad07a71f26b2</span>, <span class="tok-number">0x7e2000a41346a7a7</span>), <span class="tok-comment">// 5^-91</span>
</span>
<span class="line" id="L444"> U128.new(<span class="tok-number">0x825ecc24c873782f</span>, <span class="tok-number">0x8ed400668c0c28c8</span>), <span class="tok-comment">// 5^-90</span>
</span>
<span class="line" id="L445"> U128.new(<span class="tok-number">0xa2f67f2dfa90563b</span>, <span class="tok-number">0x728900802f0f32fa</span>), <span class="tok-comment">// 5^-89</span>
</span>
<span class="line" id="L446"> U128.new(<span class="tok-number">0xcbb41ef979346bca</span>, <span class="tok-number">0x4f2b40a03ad2ffb9</span>), <span class="tok-comment">// 5^-88</span>
</span>
<span class="line" id="L447"> U128.new(<span class="tok-number">0xfea126b7d78186bc</span>, <span class="tok-number">0xe2f610c84987bfa8</span>), <span class="tok-comment">// 5^-87</span>
</span>
<span class="line" id="L448"> U128.new(<span class="tok-number">0x9f24b832e6b0f436</span>, <span class="tok-number">0xdd9ca7d2df4d7c9</span>), <span class="tok-comment">// 5^-86</span>
</span>
<span class="line" id="L449"> U128.new(<span class="tok-number">0xc6ede63fa05d3143</span>, <span class="tok-number">0x91503d1c79720dbb</span>), <span class="tok-comment">// 5^-85</span>
</span>
<span class="line" id="L450"> U128.new(<span class="tok-number">0xf8a95fcf88747d94</span>, <span class="tok-number">0x75a44c6397ce912a</span>), <span class="tok-comment">// 5^-84</span>
</span>
<span class="line" id="L451"> U128.new(<span class="tok-number">0x9b69dbe1b548ce7c</span>, <span class="tok-number">0xc986afbe3ee11aba</span>), <span class="tok-comment">// 5^-83</span>
</span>
<span class="line" id="L452"> U128.new(<span class="tok-number">0xc24452da229b021b</span>, <span class="tok-number">0xfbe85badce996168</span>), <span class="tok-comment">// 5^-82</span>
</span>
<span class="line" id="L453"> U128.new(<span class="tok-number">0xf2d56790ab41c2a2</span>, <span class="tok-number">0xfae27299423fb9c3</span>), <span class="tok-comment">// 5^-81</span>
</span>
<span class="line" id="L454"> U128.new(<span class="tok-number">0x97c560ba6b0919a5</span>, <span class="tok-number">0xdccd879fc967d41a</span>), <span class="tok-comment">// 5^-80</span>
</span>
<span class="line" id="L455"> U128.new(<span class="tok-number">0xbdb6b8e905cb600f</span>, <span class="tok-number">0x5400e987bbc1c920</span>), <span class="tok-comment">// 5^-79</span>
</span>
<span class="line" id="L456"> U128.new(<span class="tok-number">0xed246723473e3813</span>, <span class="tok-number">0x290123e9aab23b68</span>), <span class="tok-comment">// 5^-78</span>
</span>
<span class="line" id="L457"> U128.new(<span class="tok-number">0x9436c0760c86e30b</span>, <span class="tok-number">0xf9a0b6720aaf6521</span>), <span class="tok-comment">// 5^-77</span>
</span>
<span class="line" id="L458"> U128.new(<span class="tok-number">0xb94470938fa89bce</span>, <span class="tok-number">0xf808e40e8d5b3e69</span>), <span class="tok-comment">// 5^-76</span>
</span>
<span class="line" id="L459"> U128.new(<span class="tok-number">0xe7958cb87392c2c2</span>, <span class="tok-number">0xb60b1d1230b20e04</span>), <span class="tok-comment">// 5^-75</span>
</span>
<span class="line" id="L460"> U128.new(<span class="tok-number">0x90bd77f3483bb9b9</span>, <span class="tok-number">0xb1c6f22b5e6f48c2</span>), <span class="tok-comment">// 5^-74</span>
</span>
<span class="line" id="L461"> U128.new(<span class="tok-number">0xb4ecd5f01a4aa828</span>, <span class="tok-number">0x1e38aeb6360b1af3</span>), <span class="tok-comment">// 5^-73</span>
</span>
<span class="line" id="L462"> U128.new(<span class="tok-number">0xe2280b6c20dd5232</span>, <span class="tok-number">0x25c6da63c38de1b0</span>), <span class="tok-comment">// 5^-72</span>
</span>
<span class="line" id="L463"> U128.new(<span class="tok-number">0x8d590723948a535f</span>, <span class="tok-number">0x579c487e5a38ad0e</span>), <span class="tok-comment">// 5^-71</span>
</span>
<span class="line" id="L464"> U128.new(<span class="tok-number">0xb0af48ec79ace837</span>, <span class="tok-number">0x2d835a9df0c6d851</span>), <span class="tok-comment">// 5^-70</span>
</span>
<span class="line" id="L465"> U128.new(<span class="tok-number">0xdcdb1b2798182244</span>, <span class="tok-number">0xf8e431456cf88e65</span>), <span class="tok-comment">// 5^-69</span>
</span>
<span class="line" id="L466"> U128.new(<span class="tok-number">0x8a08f0f8bf0f156b</span>, <span class="tok-number">0x1b8e9ecb641b58ff</span>), <span class="tok-comment">// 5^-68</span>
</span>
<span class="line" id="L467"> U128.new(<span class="tok-number">0xac8b2d36eed2dac5</span>, <span class="tok-number">0xe272467e3d222f3f</span>), <span class="tok-comment">// 5^-67</span>
</span>
<span class="line" id="L468"> U128.new(<span class="tok-number">0xd7adf884aa879177</span>, <span class="tok-number">0x5b0ed81dcc6abb0f</span>), <span class="tok-comment">// 5^-66</span>
</span>
<span class="line" id="L469"> U128.new(<span class="tok-number">0x86ccbb52ea94baea</span>, <span class="tok-number">0x98e947129fc2b4e9</span>), <span class="tok-comment">// 5^-65</span>
</span>
<span class="line" id="L470"> U128.new(<span class="tok-number">0xa87fea27a539e9a5</span>, <span class="tok-number">0x3f2398d747b36224</span>), <span class="tok-comment">// 5^-64</span>
</span>
<span class="line" id="L471"> U128.new(<span class="tok-number">0xd29fe4b18e88640e</span>, <span class="tok-number">0x8eec7f0d19a03aad</span>), <span class="tok-comment">// 5^-63</span>
</span>
<span class="line" id="L472"> U128.new(<span class="tok-number">0x83a3eeeef9153e89</span>, <span class="tok-number">0x1953cf68300424ac</span>), <span class="tok-comment">// 5^-62</span>
</span>
<span class="line" id="L473"> U128.new(<span class="tok-number">0xa48ceaaab75a8e2b</span>, <span class="tok-number">0x5fa8c3423c052dd7</span>), <span class="tok-comment">// 5^-61</span>
</span>
<span class="line" id="L474"> U128.new(<span class="tok-number">0xcdb02555653131b6</span>, <span class="tok-number">0x3792f412cb06794d</span>), <span class="tok-comment">// 5^-60</span>
</span>
<span class="line" id="L475"> U128.new(<span class="tok-number">0x808e17555f3ebf11</span>, <span class="tok-number">0xe2bbd88bbee40bd0</span>), <span class="tok-comment">// 5^-59</span>
</span>
<span class="line" id="L476"> U128.new(<span class="tok-number">0xa0b19d2ab70e6ed6</span>, <span class="tok-number">0x5b6aceaeae9d0ec4</span>), <span class="tok-comment">// 5^-58</span>
</span>
<span class="line" id="L477"> U128.new(<span class="tok-number">0xc8de047564d20a8b</span>, <span class="tok-number">0xf245825a5a445275</span>), <span class="tok-comment">// 5^-57</span>
</span>
<span class="line" id="L478"> U128.new(<span class="tok-number">0xfb158592be068d2e</span>, <span class="tok-number">0xeed6e2f0f0d56712</span>), <span class="tok-comment">// 5^-56</span>
</span>
<span class="line" id="L479"> U128.new(<span class="tok-number">0x9ced737bb6c4183d</span>, <span class="tok-number">0x55464dd69685606b</span>), <span class="tok-comment">// 5^-55</span>
</span>
<span class="line" id="L480"> U128.new(<span class="tok-number">0xc428d05aa4751e4c</span>, <span class="tok-number">0xaa97e14c3c26b886</span>), <span class="tok-comment">// 5^-54</span>
</span>
<span class="line" id="L481"> U128.new(<span class="tok-number">0xf53304714d9265df</span>, <span class="tok-number">0xd53dd99f4b3066a8</span>), <span class="tok-comment">// 5^-53</span>
</span>
<span class="line" id="L482"> U128.new(<span class="tok-number">0x993fe2c6d07b7fab</span>, <span class="tok-number">0xe546a8038efe4029</span>), <span class="tok-comment">// 5^-52</span>
</span>
<span class="line" id="L483"> U128.new(<span class="tok-number">0xbf8fdb78849a5f96</span>, <span class="tok-number">0xde98520472bdd033</span>), <span class="tok-comment">// 5^-51</span>
</span>
<span class="line" id="L484"> U128.new(<span class="tok-number">0xef73d256a5c0f77c</span>, <span class="tok-number">0x963e66858f6d4440</span>), <span class="tok-comment">// 5^-50</span>
</span>
<span class="line" id="L485"> U128.new(<span class="tok-number">0x95a8637627989aad</span>, <span class="tok-number">0xdde7001379a44aa8</span>), <span class="tok-comment">// 5^-49</span>
</span>
<span class="line" id="L486"> U128.new(<span class="tok-number">0xbb127c53b17ec159</span>, <span class="tok-number">0x5560c018580d5d52</span>), <span class="tok-comment">// 5^-48</span>
</span>
<span class="line" id="L487"> U128.new(<span class="tok-number">0xe9d71b689dde71af</span>, <span class="tok-number">0xaab8f01e6e10b4a6</span>), <span class="tok-comment">// 5^-47</span>
</span>
<span class="line" id="L488"> U128.new(<span class="tok-number">0x9226712162ab070d</span>, <span class="tok-number">0xcab3961304ca70e8</span>), <span class="tok-comment">// 5^-46</span>
</span>
<span class="line" id="L489"> U128.new(<span class="tok-number">0xb6b00d69bb55c8d1</span>, <span class="tok-number">0x3d607b97c5fd0d22</span>), <span class="tok-comment">// 5^-45</span>
</span>
<span class="line" id="L490"> U128.new(<span class="tok-number">0xe45c10c42a2b3b05</span>, <span class="tok-number">0x8cb89a7db77c506a</span>), <span class="tok-comment">// 5^-44</span>
</span>
<span class="line" id="L491"> U128.new(<span class="tok-number">0x8eb98a7a9a5b04e3</span>, <span class="tok-number">0x77f3608e92adb242</span>), <span class="tok-comment">// 5^-43</span>
</span>
<span class="line" id="L492"> U128.new(<span class="tok-number">0xb267ed1940f1c61c</span>, <span class="tok-number">0x55f038b237591ed3</span>), <span class="tok-comment">// 5^-42</span>
</span>
<span class="line" id="L493"> U128.new(<span class="tok-number">0xdf01e85f912e37a3</span>, <span class="tok-number">0x6b6c46dec52f6688</span>), <span class="tok-comment">// 5^-41</span>
</span>
<span class="line" id="L494"> U128.new(<span class="tok-number">0x8b61313bbabce2c6</span>, <span class="tok-number">0x2323ac4b3b3da015</span>), <span class="tok-comment">// 5^-40</span>
</span>
<span class="line" id="L495"> U128.new(<span class="tok-number">0xae397d8aa96c1b77</span>, <span class="tok-number">0xabec975e0a0d081a</span>), <span class="tok-comment">// 5^-39</span>
</span>
<span class="line" id="L496"> U128.new(<span class="tok-number">0xd9c7dced53c72255</span>, <span class="tok-number">0x96e7bd358c904a21</span>), <span class="tok-comment">// 5^-38</span>
</span>
<span class="line" id="L497"> U128.new(<span class="tok-number">0x881cea14545c7575</span>, <span class="tok-number">0x7e50d64177da2e54</span>), <span class="tok-comment">// 5^-37</span>
</span>
<span class="line" id="L498"> U128.new(<span class="tok-number">0xaa242499697392d2</span>, <span class="tok-number">0xdde50bd1d5d0b9e9</span>), <span class="tok-comment">// 5^-36</span>
</span>
<span class="line" id="L499"> U128.new(<span class="tok-number">0xd4ad2dbfc3d07787</span>, <span class="tok-number">0x955e4ec64b44e864</span>), <span class="tok-comment">// 5^-35</span>
</span>
<span class="line" id="L500"> U128.new(<span class="tok-number">0x84ec3c97da624ab4</span>, <span class="tok-number">0xbd5af13bef0b113e</span>), <span class="tok-comment">// 5^-34</span>
</span>
<span class="line" id="L501"> U128.new(<span class="tok-number">0xa6274bbdd0fadd61</span>, <span class="tok-number">0xecb1ad8aeacdd58e</span>), <span class="tok-comment">// 5^-33</span>
</span>
<span class="line" id="L502"> U128.new(<span class="tok-number">0xcfb11ead453994ba</span>, <span class="tok-number">0x67de18eda5814af2</span>), <span class="tok-comment">// 5^-32</span>
</span>
<span class="line" id="L503"> U128.new(<span class="tok-number">0x81ceb32c4b43fcf4</span>, <span class="tok-number">0x80eacf948770ced7</span>), <span class="tok-comment">// 5^-31</span>
</span>
<span class="line" id="L504"> U128.new(<span class="tok-number">0xa2425ff75e14fc31</span>, <span class="tok-number">0xa1258379a94d028d</span>), <span class="tok-comment">// 5^-30</span>
</span>
<span class="line" id="L505"> U128.new(<span class="tok-number">0xcad2f7f5359a3b3e</span>, <span class="tok-number">0x96ee45813a04330</span>), <span class="tok-comment">// 5^-29</span>
</span>
<span class="line" id="L506"> U128.new(<span class="tok-number">0xfd87b5f28300ca0d</span>, <span class="tok-number">0x8bca9d6e188853fc</span>), <span class="tok-comment">// 5^-28</span>
</span>
<span class="line" id="L507"> U128.new(<span class="tok-number">0x9e74d1b791e07e48</span>, <span class="tok-number">0x775ea264cf55347e</span>), <span class="tok-comment">// 5^-27</span>
</span>
<span class="line" id="L508"> U128.new(<span class="tok-number">0xc612062576589dda</span>, <span class="tok-number">0x95364afe032a819e</span>), <span class="tok-comment">// 5^-26</span>
</span>
<span class="line" id="L509"> U128.new(<span class="tok-number">0xf79687aed3eec551</span>, <span class="tok-number">0x3a83ddbd83f52205</span>), <span class="tok-comment">// 5^-25</span>
</span>
<span class="line" id="L510"> U128.new(<span class="tok-number">0x9abe14cd44753b52</span>, <span class="tok-number">0xc4926a9672793543</span>), <span class="tok-comment">// 5^-24</span>
</span>
<span class="line" id="L511"> U128.new(<span class="tok-number">0xc16d9a0095928a27</span>, <span class="tok-number">0x75b7053c0f178294</span>), <span class="tok-comment">// 5^-23</span>
</span>
<span class="line" id="L512"> U128.new(<span class="tok-number">0xf1c90080baf72cb1</span>, <span class="tok-number">0x5324c68b12dd6339</span>), <span class="tok-comment">// 5^-22</span>
</span>
<span class="line" id="L513"> U128.new(<span class="tok-number">0x971da05074da7bee</span>, <span class="tok-number">0xd3f6fc16ebca5e04</span>), <span class="tok-comment">// 5^-21</span>
</span>
<span class="line" id="L514"> U128.new(<span class="tok-number">0xbce5086492111aea</span>, <span class="tok-number">0x88f4bb1ca6bcf585</span>), <span class="tok-comment">// 5^-20</span>
</span>
<span class="line" id="L515"> U128.new(<span class="tok-number">0xec1e4a7db69561a5</span>, <span class="tok-number">0x2b31e9e3d06c32e6</span>), <span class="tok-comment">// 5^-19</span>
</span>
<span class="line" id="L516"> U128.new(<span class="tok-number">0x9392ee8e921d5d07</span>, <span class="tok-number">0x3aff322e62439fd0</span>), <span class="tok-comment">// 5^-18</span>
</span>
<span class="line" id="L517"> U128.new(<span class="tok-number">0xb877aa3236a4b449</span>, <span class="tok-number">0x9befeb9fad487c3</span>), <span class="tok-comment">// 5^-17</span>
</span>
<span class="line" id="L518"> U128.new(<span class="tok-number">0xe69594bec44de15b</span>, <span class="tok-number">0x4c2ebe687989a9b4</span>), <span class="tok-comment">// 5^-16</span>
</span>
<span class="line" id="L519"> U128.new(<span class="tok-number">0x901d7cf73ab0acd9</span>, <span class="tok-number">0xf9d37014bf60a11</span>), <span class="tok-comment">// 5^-15</span>
</span>
<span class="line" id="L520"> U128.new(<span class="tok-number">0xb424dc35095cd80f</span>, <span class="tok-number">0x538484c19ef38c95</span>), <span class="tok-comment">// 5^-14</span>
</span>
<span class="line" id="L521"> U128.new(<span class="tok-number">0xe12e13424bb40e13</span>, <span class="tok-number">0x2865a5f206b06fba</span>), <span class="tok-comment">// 5^-13</span>
</span>
<span class="line" id="L522"> U128.new(<span class="tok-number">0x8cbccc096f5088cb</span>, <span class="tok-number">0xf93f87b7442e45d4</span>), <span class="tok-comment">// 5^-12</span>
</span>
<span class="line" id="L523"> U128.new(<span class="tok-number">0xafebff0bcb24aafe</span>, <span class="tok-number">0xf78f69a51539d749</span>), <span class="tok-comment">// 5^-11</span>
</span>
<span class="line" id="L524"> U128.new(<span class="tok-number">0xdbe6fecebdedd5be</span>, <span class="tok-number">0xb573440e5a884d1c</span>), <span class="tok-comment">// 5^-10</span>
</span>
<span class="line" id="L525"> U128.new(<span class="tok-number">0x89705f4136b4a597</span>, <span class="tok-number">0x31680a88f8953031</span>), <span class="tok-comment">// 5^-9</span>
</span>
<span class="line" id="L526"> U128.new(<span class="tok-number">0xabcc77118461cefc</span>, <span class="tok-number">0xfdc20d2b36ba7c3e</span>), <span class="tok-comment">// 5^-8</span>
</span>
<span class="line" id="L527"> U128.new(<span class="tok-number">0xd6bf94d5e57a42bc</span>, <span class="tok-number">0x3d32907604691b4d</span>), <span class="tok-comment">// 5^-7</span>
</span>
<span class="line" id="L528"> U128.new(<span class="tok-number">0x8637bd05af6c69b5</span>, <span class="tok-number">0xa63f9a49c2c1b110</span>), <span class="tok-comment">// 5^-6</span>
</span>
<span class="line" id="L529"> U128.new(<span class="tok-number">0xa7c5ac471b478423</span>, <span class="tok-number">0xfcf80dc33721d54</span>), <span class="tok-comment">// 5^-5</span>
</span>
<span class="line" id="L530"> U128.new(<span class="tok-number">0xd1b71758e219652b</span>, <span class="tok-number">0xd3c36113404ea4a9</span>), <span class="tok-comment">// 5^-4</span>
</span>
<span class="line" id="L531"> U128.new(<span class="tok-number">0x83126e978d4fdf3b</span>, <span class="tok-number">0x645a1cac083126ea</span>), <span class="tok-comment">// 5^-3</span>
</span>
<span class="line" id="L532"> U128.new(<span class="tok-number">0xa3d70a3d70a3d70a</span>, <span class="tok-number">0x3d70a3d70a3d70a4</span>), <span class="tok-comment">// 5^-2</span>
</span>
<span class="line" id="L533"> U128.new(<span class="tok-number">0xcccccccccccccccc</span>, <span class="tok-number">0xcccccccccccccccd</span>), <span class="tok-comment">// 5^-1</span>
</span>
<span class="line" id="L534"> U128.new(<span class="tok-number">0x8000000000000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^0</span>
</span>
<span class="line" id="L535"> U128.new(<span class="tok-number">0xa000000000000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^1</span>
</span>
<span class="line" id="L536"> U128.new(<span class="tok-number">0xc800000000000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^2</span>
</span>
<span class="line" id="L537"> U128.new(<span class="tok-number">0xfa00000000000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^3</span>
</span>
<span class="line" id="L538"> U128.new(<span class="tok-number">0x9c40000000000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^4</span>
</span>
<span class="line" id="L539"> U128.new(<span class="tok-number">0xc350000000000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^5</span>
</span>
<span class="line" id="L540"> U128.new(<span class="tok-number">0xf424000000000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^6</span>
</span>
<span class="line" id="L541"> U128.new(<span class="tok-number">0x9896800000000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^7</span>
</span>
<span class="line" id="L542"> U128.new(<span class="tok-number">0xbebc200000000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^8</span>
</span>
<span class="line" id="L543"> U128.new(<span class="tok-number">0xee6b280000000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^9</span>
</span>
<span class="line" id="L544"> U128.new(<span class="tok-number">0x9502f90000000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^10</span>
</span>
<span class="line" id="L545"> U128.new(<span class="tok-number">0xba43b74000000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^11</span>
</span>
<span class="line" id="L546"> U128.new(<span class="tok-number">0xe8d4a51000000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^12</span>
</span>
<span class="line" id="L547"> U128.new(<span class="tok-number">0x9184e72a00000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^13</span>
</span>
<span class="line" id="L548"> U128.new(<span class="tok-number">0xb5e620f480000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^14</span>
</span>
<span class="line" id="L549"> U128.new(<span class="tok-number">0xe35fa931a0000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^15</span>
</span>
<span class="line" id="L550"> U128.new(<span class="tok-number">0x8e1bc9bf04000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^16</span>
</span>
<span class="line" id="L551"> U128.new(<span class="tok-number">0xb1a2bc2ec5000000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^17</span>
</span>
<span class="line" id="L552"> U128.new(<span class="tok-number">0xde0b6b3a76400000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^18</span>
</span>
<span class="line" id="L553"> U128.new(<span class="tok-number">0x8ac7230489e80000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^19</span>
</span>
<span class="line" id="L554"> U128.new(<span class="tok-number">0xad78ebc5ac620000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^20</span>
</span>
<span class="line" id="L555"> U128.new(<span class="tok-number">0xd8d726b7177a8000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^21</span>
</span>
<span class="line" id="L556"> U128.new(<span class="tok-number">0x878678326eac9000</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^22</span>
</span>
<span class="line" id="L557"> U128.new(<span class="tok-number">0xa968163f0a57b400</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^23</span>
</span>
<span class="line" id="L558"> U128.new(<span class="tok-number">0xd3c21bcecceda100</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^24</span>
</span>
<span class="line" id="L559"> U128.new(<span class="tok-number">0x84595161401484a0</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^25</span>
</span>
<span class="line" id="L560"> U128.new(<span class="tok-number">0xa56fa5b99019a5c8</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^26</span>
</span>
<span class="line" id="L561"> U128.new(<span class="tok-number">0xcecb8f27f4200f3a</span>, <span class="tok-number">0x0</span>), <span class="tok-comment">// 5^27</span>
</span>
<span class="line" id="L562"> U128.new(<span class="tok-number">0x813f3978f8940984</span>, <span class="tok-number">0x4000000000000000</span>), <span class="tok-comment">// 5^28</span>
</span>
<span class="line" id="L563"> U128.new(<span class="tok-number">0xa18f07d736b90be5</span>, <span class="tok-number">0x5000000000000000</span>), <span class="tok-comment">// 5^29</span>
</span>
<span class="line" id="L564"> U128.new(<span class="tok-number">0xc9f2c9cd04674ede</span>, <span class="tok-number">0xa400000000000000</span>), <span class="tok-comment">// 5^30</span>
</span>
<span class="line" id="L565"> U128.new(<span class="tok-number">0xfc6f7c4045812296</span>, <span class="tok-number">0x4d00000000000000</span>), <span class="tok-comment">// 5^31</span>
</span>
<span class="line" id="L566"> U128.new(<span class="tok-number">0x9dc5ada82b70b59d</span>, <span class="tok-number">0xf020000000000000</span>), <span class="tok-comment">// 5^32</span>
</span>
<span class="line" id="L567"> U128.new(<span class="tok-number">0xc5371912364ce305</span>, <span class="tok-number">0x6c28000000000000</span>), <span class="tok-comment">// 5^33</span>
</span>
<span class="line" id="L568"> U128.new(<span class="tok-number">0xf684df56c3e01bc6</span>, <span class="tok-number">0xc732000000000000</span>), <span class="tok-comment">// 5^34</span>
</span>
<span class="line" id="L569"> U128.new(<span class="tok-number">0x9a130b963a6c115c</span>, <span class="tok-number">0x3c7f400000000000</span>), <span class="tok-comment">// 5^35</span>
</span>
<span class="line" id="L570"> U128.new(<span class="tok-number">0xc097ce7bc90715b3</span>, <span class="tok-number">0x4b9f100000000000</span>), <span class="tok-comment">// 5^36</span>
</span>
<span class="line" id="L571"> U128.new(<span class="tok-number">0xf0bdc21abb48db20</span>, <span class="tok-number">0x1e86d40000000000</span>), <span class="tok-comment">// 5^37</span>
</span>
<span class="line" id="L572"> U128.new(<span class="tok-number">0x96769950b50d88f4</span>, <span class="tok-number">0x1314448000000000</span>), <span class="tok-comment">// 5^38</span>
</span>
<span class="line" id="L573"> U128.new(<span class="tok-number">0xbc143fa4e250eb31</span>, <span class="tok-number">0x17d955a000000000</span>), <span class="tok-comment">// 5^39</span>
</span>
<span class="line" id="L574"> U128.new(<span class="tok-number">0xeb194f8e1ae525fd</span>, <span class="tok-number">0x5dcfab0800000000</span>), <span class="tok-comment">// 5^40</span>
</span>
<span class="line" id="L575"> U128.new(<span class="tok-number">0x92efd1b8d0cf37be</span>, <span class="tok-number">0x5aa1cae500000000</span>), <span class="tok-comment">// 5^41</span>
</span>
<span class="line" id="L576"> U128.new(<span class="tok-number">0xb7abc627050305ad</span>, <span class="tok-number">0xf14a3d9e40000000</span>), <span class="tok-comment">// 5^42</span>
</span>
<span class="line" id="L577"> U128.new(<span class="tok-number">0xe596b7b0c643c719</span>, <span class="tok-number">0x6d9ccd05d0000000</span>), <span class="tok-comment">// 5^43</span>
</span>
<span class="line" id="L578"> U128.new(<span class="tok-number">0x8f7e32ce7bea5c6f</span>, <span class="tok-number">0xe4820023a2000000</span>), <span class="tok-comment">// 5^44</span>
</span>
<span class="line" id="L579"> U128.new(<span class="tok-number">0xb35dbf821ae4f38b</span>, <span class="tok-number">0xdda2802c8a800000</span>), <span class="tok-comment">// 5^45</span>
</span>
<span class="line" id="L580"> U128.new(<span class="tok-number">0xe0352f62a19e306e</span>, <span class="tok-number">0xd50b2037ad200000</span>), <span class="tok-comment">// 5^46</span>
</span>
<span class="line" id="L581"> U128.new(<span class="tok-number">0x8c213d9da502de45</span>, <span class="tok-number">0x4526f422cc340000</span>), <span class="tok-comment">// 5^47</span>
</span>
<span class="line" id="L582"> U128.new(<span class="tok-number">0xaf298d050e4395d6</span>, <span class="tok-number">0x9670b12b7f410000</span>), <span class="tok-comment">// 5^48</span>
</span>
<span class="line" id="L583"> U128.new(<span class="tok-number">0xdaf3f04651d47b4c</span>, <span class="tok-number">0x3c0cdd765f114000</span>), <span class="tok-comment">// 5^49</span>
</span>
<span class="line" id="L584"> U128.new(<span class="tok-number">0x88d8762bf324cd0f</span>, <span class="tok-number">0xa5880a69fb6ac800</span>), <span class="tok-comment">// 5^50</span>
</span>
<span class="line" id="L585"> U128.new(<span class="tok-number">0xab0e93b6efee0053</span>, <span class="tok-number">0x8eea0d047a457a00</span>), <span class="tok-comment">// 5^51</span>
</span>
<span class="line" id="L586"> U128.new(<span class="tok-number">0xd5d238a4abe98068</span>, <span class="tok-number">0x72a4904598d6d880</span>), <span class="tok-comment">// 5^52</span>
</span>
<span class="line" id="L587"> U128.new(<span class="tok-number">0x85a36366eb71f041</span>, <span class="tok-number">0x47a6da2b7f864750</span>), <span class="tok-comment">// 5^53</span>
</span>
<span class="line" id="L588"> U128.new(<span class="tok-number">0xa70c3c40a64e6c51</span>, <span class="tok-number">0x999090b65f67d924</span>), <span class="tok-comment">// 5^54</span>
</span>
<span class="line" id="L589"> U128.new(<span class="tok-number">0xd0cf4b50cfe20765</span>, <span class="tok-number">0xfff4b4e3f741cf6d</span>), <span class="tok-comment">// 5^55</span>
</span>
<span class="line" id="L590"> U128.new(<span class="tok-number">0x82818f1281ed449f</span>, <span class="tok-number">0xbff8f10e7a8921a4</span>), <span class="tok-comment">// 5^56</span>
</span>
<span class="line" id="L591"> U128.new(<span class="tok-number">0xa321f2d7226895c7</span>, <span class="tok-number">0xaff72d52192b6a0d</span>), <span class="tok-comment">// 5^57</span>
</span>
<span class="line" id="L592"> U128.new(<span class="tok-number">0xcbea6f8ceb02bb39</span>, <span class="tok-number">0x9bf4f8a69f764490</span>), <span class="tok-comment">// 5^58</span>
</span>
<span class="line" id="L593"> U128.new(<span class="tok-number">0xfee50b7025c36a08</span>, <span class="tok-number">0x2f236d04753d5b4</span>), <span class="tok-comment">// 5^59</span>
</span>
<span class="line" id="L594"> U128.new(<span class="tok-number">0x9f4f2726179a2245</span>, <span class="tok-number">0x1d762422c946590</span>), <span class="tok-comment">// 5^60</span>
</span>
<span class="line" id="L595"> U128.new(<span class="tok-number">0xc722f0ef9d80aad6</span>, <span class="tok-number">0x424d3ad2b7b97ef5</span>), <span class="tok-comment">// 5^61</span>
</span>
<span class="line" id="L596"> U128.new(<span class="tok-number">0xf8ebad2b84e0d58b</span>, <span class="tok-number">0xd2e0898765a7deb2</span>), <span class="tok-comment">// 5^62</span>
</span>
<span class="line" id="L597"> U128.new(<span class="tok-number">0x9b934c3b330c8577</span>, <span class="tok-number">0x63cc55f49f88eb2f</span>), <span class="tok-comment">// 5^63</span>
</span>
<span class="line" id="L598"> U128.new(<span class="tok-number">0xc2781f49ffcfa6d5</span>, <span class="tok-number">0x3cbf6b71c76b25fb</span>), <span class="tok-comment">// 5^64</span>
</span>
<span class="line" id="L599"> U128.new(<span class="tok-number">0xf316271c7fc3908a</span>, <span class="tok-number">0x8bef464e3945ef7a</span>), <span class="tok-comment">// 5^65</span>
</span>
<span class="line" id="L600"> U128.new(<span class="tok-number">0x97edd871cfda3a56</span>, <span class="tok-number">0x97758bf0e3cbb5ac</span>), <span class="tok-comment">// 5^66</span>
</span>
<span class="line" id="L601"> U128.new(<span class="tok-number">0xbde94e8e43d0c8ec</span>, <span class="tok-number">0x3d52eeed1cbea317</span>), <span class="tok-comment">// 5^67</span>
</span>
<span class="line" id="L602"> U128.new(<span class="tok-number">0xed63a231d4c4fb27</span>, <span class="tok-number">0x4ca7aaa863ee4bdd</span>), <span class="tok-comment">// 5^68</span>
</span>
<span class="line" id="L603"> U128.new(<span class="tok-number">0x945e455f24fb1cf8</span>, <span class="tok-number">0x8fe8caa93e74ef6a</span>), <span class="tok-comment">// 5^69</span>
</span>
<span class="line" id="L604"> U128.new(<span class="tok-number">0xb975d6b6ee39e436</span>, <span class="tok-number">0xb3e2fd538e122b44</span>), <span class="tok-comment">// 5^70</span>
</span>
<span class="line" id="L605"> U128.new(<span class="tok-number">0xe7d34c64a9c85d44</span>, <span class="tok-number">0x60dbbca87196b616</span>), <span class="tok-comment">// 5^71</span>
</span>
<span class="line" id="L606"> U128.new(<span class="tok-number">0x90e40fbeea1d3a4a</span>, <span class="tok-number">0xbc8955e946fe31cd</span>), <span class="tok-comment">// 5^72</span>
</span>
<span class="line" id="L607"> U128.new(<span class="tok-number">0xb51d13aea4a488dd</span>, <span class="tok-number">0x6babab6398bdbe41</span>), <span class="tok-comment">// 5^73</span>
</span>
<span class="line" id="L608"> U128.new(<span class="tok-number">0xe264589a4dcdab14</span>, <span class="tok-number">0xc696963c7eed2dd1</span>), <span class="tok-comment">// 5^74</span>
</span>
<span class="line" id="L609"> U128.new(<span class="tok-number">0x8d7eb76070a08aec</span>, <span class="tok-number">0xfc1e1de5cf543ca2</span>), <span class="tok-comment">// 5^75</span>
</span>
<span class="line" id="L610"> U128.new(<span class="tok-number">0xb0de65388cc8ada8</span>, <span class="tok-number">0x3b25a55f43294bcb</span>), <span class="tok-comment">// 5^76</span>
</span>
<span class="line" id="L611"> U128.new(<span class="tok-number">0xdd15fe86affad912</span>, <span class="tok-number">0x49ef0eb713f39ebe</span>), <span class="tok-comment">// 5^77</span>
</span>
<span class="line" id="L612"> U128.new(<span class="tok-number">0x8a2dbf142dfcc7ab</span>, <span class="tok-number">0x6e3569326c784337</span>), <span class="tok-comment">// 5^78</span>
</span>
<span class="line" id="L613"> U128.new(<span class="tok-number">0xacb92ed9397bf996</span>, <span class="tok-number">0x49c2c37f07965404</span>), <span class="tok-comment">// 5^79</span>
</span>
<span class="line" id="L614"> U128.new(<span class="tok-number">0xd7e77a8f87daf7fb</span>, <span class="tok-number">0xdc33745ec97be906</span>), <span class="tok-comment">// 5^80</span>
</span>
<span class="line" id="L615"> U128.new(<span class="tok-number">0x86f0ac99b4e8dafd</span>, <span class="tok-number">0x69a028bb3ded71a3</span>), <span class="tok-comment">// 5^81</span>
</span>
<span class="line" id="L616"> U128.new(<span class="tok-number">0xa8acd7c0222311bc</span>, <span class="tok-number">0xc40832ea0d68ce0c</span>), <span class="tok-comment">// 5^82</span>
</span>
<span class="line" id="L617"> U128.new(<span class="tok-number">0xd2d80db02aabd62b</span>, <span class="tok-number">0xf50a3fa490c30190</span>), <span class="tok-comment">// 5^83</span>
</span>
<span class="line" id="L618"> U128.new(<span class="tok-number">0x83c7088e1aab65db</span>, <span class="tok-number">0x792667c6da79e0fa</span>), <span class="tok-comment">// 5^84</span>
</span>
<span class="line" id="L619"> U128.new(<span class="tok-number">0xa4b8cab1a1563f52</span>, <span class="tok-number">0x577001b891185938</span>), <span class="tok-comment">// 5^85</span>
</span>
<span class="line" id="L620"> U128.new(<span class="tok-number">0xcde6fd5e09abcf26</span>, <span class="tok-number">0xed4c0226b55e6f86</span>), <span class="tok-comment">// 5^86</span>
</span>
<span class="line" id="L621"> U128.new(<span class="tok-number">0x80b05e5ac60b6178</span>, <span class="tok-number">0x544f8158315b05b4</span>), <span class="tok-comment">// 5^87</span>
</span>
<span class="line" id="L622"> U128.new(<span class="tok-number">0xa0dc75f1778e39d6</span>, <span class="tok-number">0x696361ae3db1c721</span>), <span class="tok-comment">// 5^88</span>
</span>
<span class="line" id="L623"> U128.new(<span class="tok-number">0xc913936dd571c84c</span>, <span class="tok-number">0x3bc3a19cd1e38e9</span>), <span class="tok-comment">// 5^89</span>
</span>
<span class="line" id="L624"> U128.new(<span class="tok-number">0xfb5878494ace3a5f</span>, <span class="tok-number">0x4ab48a04065c723</span>), <span class="tok-comment">// 5^90</span>
</span>
<span class="line" id="L625"> U128.new(<span class="tok-number">0x9d174b2dcec0e47b</span>, <span class="tok-number">0x62eb0d64283f9c76</span>), <span class="tok-comment">// 5^91</span>
</span>
<span class="line" id="L626"> U128.new(<span class="tok-number">0xc45d1df942711d9a</span>, <span class="tok-number">0x3ba5d0bd324f8394</span>), <span class="tok-comment">// 5^92</span>
</span>
<span class="line" id="L627"> U128.new(<span class="tok-number">0xf5746577930d6500</span>, <span class="tok-number">0xca8f44ec7ee36479</span>), <span class="tok-comment">// 5^93</span>
</span>
<span class="line" id="L628"> U128.new(<span class="tok-number">0x9968bf6abbe85f20</span>, <span class="tok-number">0x7e998b13cf4e1ecb</span>), <span class="tok-comment">// 5^94</span>
</span>
<span class="line" id="L629"> U128.new(<span class="tok-number">0xbfc2ef456ae276e8</span>, <span class="tok-number">0x9e3fedd8c321a67e</span>), <span class="tok-comment">// 5^95</span>
</span>
<span class="line" id="L630"> U128.new(<span class="tok-number">0xefb3ab16c59b14a2</span>, <span class="tok-number">0xc5cfe94ef3ea101e</span>), <span class="tok-comment">// 5^96</span>
</span>
<span class="line" id="L631"> U128.new(<span class="tok-number">0x95d04aee3b80ece5</span>, <span class="tok-number">0xbba1f1d158724a12</span>), <span class="tok-comment">// 5^97</span>
</span>
<span class="line" id="L632"> U128.new(<span class="tok-number">0xbb445da9ca61281f</span>, <span class="tok-number">0x2a8a6e45ae8edc97</span>), <span class="tok-comment">// 5^98</span>
</span>
<span class="line" id="L633"> U128.new(<span class="tok-number">0xea1575143cf97226</span>, <span class="tok-number">0xf52d09d71a3293bd</span>), <span class="tok-comment">// 5^99</span>
</span>
<span class="line" id="L634"> U128.new(<span class="tok-number">0x924d692ca61be758</span>, <span class="tok-number">0x593c2626705f9c56</span>), <span class="tok-comment">// 5^100</span>
</span>
<span class="line" id="L635"> U128.new(<span class="tok-number">0xb6e0c377cfa2e12e</span>, <span class="tok-number">0x6f8b2fb00c77836c</span>), <span class="tok-comment">// 5^101</span>
</span>
<span class="line" id="L636"> U128.new(<span class="tok-number">0xe498f455c38b997a</span>, <span class="tok-number">0xb6dfb9c0f956447</span>), <span class="tok-comment">// 5^102</span>
</span>
<span class="line" id="L637"> U128.new(<span class="tok-number">0x8edf98b59a373fec</span>, <span class="tok-number">0x4724bd4189bd5eac</span>), <span class="tok-comment">// 5^103</span>
</span>
<span class="line" id="L638"> U128.new(<span class="tok-number">0xb2977ee300c50fe7</span>, <span class="tok-number">0x58edec91ec2cb657</span>), <span class="tok-comment">// 5^104</span>
</span>
<span class="line" id="L639"> U128.new(<span class="tok-number">0xdf3d5e9bc0f653e1</span>, <span class="tok-number">0x2f2967b66737e3ed</span>), <span class="tok-comment">// 5^105</span>
</span>
<span class="line" id="L640"> U128.new(<span class="tok-number">0x8b865b215899f46c</span>, <span class="tok-number">0xbd79e0d20082ee74</span>), <span class="tok-comment">// 5^106</span>
</span>
<span class="line" id="L641"> U128.new(<span class="tok-number">0xae67f1e9aec07187</span>, <span class="tok-number">0xecd8590680a3aa11</span>), <span class="tok-comment">// 5^107</span>
</span>
<span class="line" id="L642"> U128.new(<span class="tok-number">0xda01ee641a708de9</span>, <span class="tok-number">0xe80e6f4820cc9495</span>), <span class="tok-comment">// 5^108</span>
</span>
<span class="line" id="L643"> U128.new(<span class="tok-number">0x884134fe908658b2</span>, <span class="tok-number">0x3109058d147fdcdd</span>), <span class="tok-comment">// 5^109</span>
</span>
<span class="line" id="L644"> U128.new(<span class="tok-number">0xaa51823e34a7eede</span>, <span class="tok-number">0xbd4b46f0599fd415</span>), <span class="tok-comment">// 5^110</span>
</span>
<span class="line" id="L645"> U128.new(<span class="tok-number">0xd4e5e2cdc1d1ea96</span>, <span class="tok-number">0x6c9e18ac7007c91a</span>), <span class="tok-comment">// 5^111</span>
</span>
<span class="line" id="L646"> U128.new(<span class="tok-number">0x850fadc09923329e</span>, <span class="tok-number">0x3e2cf6bc604ddb0</span>), <span class="tok-comment">// 5^112</span>
</span>
<span class="line" id="L647"> U128.new(<span class="tok-number">0xa6539930bf6bff45</span>, <span class="tok-number">0x84db8346b786151c</span>), <span class="tok-comment">// 5^113</span>
</span>
<span class="line" id="L648"> U128.new(<span class="tok-number">0xcfe87f7cef46ff16</span>, <span class="tok-number">0xe612641865679a63</span>), <span class="tok-comment">// 5^114</span>
</span>
<span class="line" id="L649"> U128.new(<span class="tok-number">0x81f14fae158c5f6e</span>, <span class="tok-number">0x4fcb7e8f3f60c07e</span>), <span class="tok-comment">// 5^115</span>
</span>
<span class="line" id="L650"> U128.new(<span class="tok-number">0xa26da3999aef7749</span>, <span class="tok-number">0xe3be5e330f38f09d</span>), <span class="tok-comment">// 5^116</span>
</span>
<span class="line" id="L651"> U128.new(<span class="tok-number">0xcb090c8001ab551c</span>, <span class="tok-number">0x5cadf5bfd3072cc5</span>), <span class="tok-comment">// 5^117</span>
</span>
<span class="line" id="L652"> U128.new(<span class="tok-number">0xfdcb4fa002162a63</span>, <span class="tok-number">0x73d9732fc7c8f7f6</span>), <span class="tok-comment">// 5^118</span>
</span>
<span class="line" id="L653"> U128.new(<span class="tok-number">0x9e9f11c4014dda7e</span>, <span class="tok-number">0x2867e7fddcdd9afa</span>), <span class="tok-comment">// 5^119</span>
</span>
<span class="line" id="L654"> U128.new(<span class="tok-number">0xc646d63501a1511d</span>, <span class="tok-number">0xb281e1fd541501b8</span>), <span class="tok-comment">// 5^120</span>
</span>
<span class="line" id="L655"> U128.new(<span class="tok-number">0xf7d88bc24209a565</span>, <span class="tok-number">0x1f225a7ca91a4226</span>), <span class="tok-comment">// 5^121</span>
</span>
<span class="line" id="L656"> U128.new(<span class="tok-number">0x9ae757596946075f</span>, <span class="tok-number">0x3375788de9b06958</span>), <span class="tok-comment">// 5^122</span>
</span>
<span class="line" id="L657"> U128.new(<span class="tok-number">0xc1a12d2fc3978937</span>, <span class="tok-number">0x52d6b1641c83ae</span>), <span class="tok-comment">// 5^123</span>
</span>
<span class="line" id="L658"> U128.new(<span class="tok-number">0xf209787bb47d6b84</span>, <span class="tok-number">0xc0678c5dbd23a49a</span>), <span class="tok-comment">// 5^124</span>
</span>
<span class="line" id="L659"> U128.new(<span class="tok-number">0x9745eb4d50ce6332</span>, <span class="tok-number">0xf840b7ba963646e0</span>), <span class="tok-comment">// 5^125</span>
</span>
<span class="line" id="L660"> U128.new(<span class="tok-number">0xbd176620a501fbff</span>, <span class="tok-number">0xb650e5a93bc3d898</span>), <span class="tok-comment">// 5^126</span>
</span>
<span class="line" id="L661"> U128.new(<span class="tok-number">0xec5d3fa8ce427aff</span>, <span class="tok-number">0xa3e51f138ab4cebe</span>), <span class="tok-comment">// 5^127</span>
</span>
<span class="line" id="L662"> U128.new(<span class="tok-number">0x93ba47c980e98cdf</span>, <span class="tok-number">0xc66f336c36b10137</span>), <span class="tok-comment">// 5^128</span>
</span>
<span class="line" id="L663"> U128.new(<span class="tok-number">0xb8a8d9bbe123f017</span>, <span class="tok-number">0xb80b0047445d4184</span>), <span class="tok-comment">// 5^129</span>
</span>
<span class="line" id="L664"> U128.new(<span class="tok-number">0xe6d3102ad96cec1d</span>, <span class="tok-number">0xa60dc059157491e5</span>), <span class="tok-comment">// 5^130</span>
</span>
<span class="line" id="L665"> U128.new(<span class="tok-number">0x9043ea1ac7e41392</span>, <span class="tok-number">0x87c89837ad68db2f</span>), <span class="tok-comment">// 5^131</span>
</span>
<span class="line" id="L666"> U128.new(<span class="tok-number">0xb454e4a179dd1877</span>, <span class="tok-number">0x29babe4598c311fb</span>), <span class="tok-comment">// 5^132</span>
</span>
<span class="line" id="L667"> U128.new(<span class="tok-number">0xe16a1dc9d8545e94</span>, <span class="tok-number">0xf4296dd6fef3d67a</span>), <span class="tok-comment">// 5^133</span>
</span>
<span class="line" id="L668"> U128.new(<span class="tok-number">0x8ce2529e2734bb1d</span>, <span class="tok-number">0x1899e4a65f58660c</span>), <span class="tok-comment">// 5^134</span>
</span>
<span class="line" id="L669"> U128.new(<span class="tok-number">0xb01ae745b101e9e4</span>, <span class="tok-number">0x5ec05dcff72e7f8f</span>), <span class="tok-comment">// 5^135</span>
</span>
<span class="line" id="L670"> U128.new(<span class="tok-number">0xdc21a1171d42645d</span>, <span class="tok-number">0x76707543f4fa1f73</span>), <span class="tok-comment">// 5^136</span>
</span>
<span class="line" id="L671"> U128.new(<span class="tok-number">0x899504ae72497eba</span>, <span class="tok-number">0x6a06494a791c53a8</span>), <span class="tok-comment">// 5^137</span>
</span>
<span class="line" id="L672"> U128.new(<span class="tok-number">0xabfa45da0edbde69</span>, <span class="tok-number">0x487db9d17636892</span>), <span class="tok-comment">// 5^138</span>
</span>
<span class="line" id="L673"> U128.new(<span class="tok-number">0xd6f8d7509292d603</span>, <span class="tok-number">0x45a9d2845d3c42b6</span>), <span class="tok-comment">// 5^139</span>
</span>
<span class="line" id="L674"> U128.new(<span class="tok-number">0x865b86925b9bc5c2</span>, <span class="tok-number">0xb8a2392ba45a9b2</span>), <span class="tok-comment">// 5^140</span>
</span>
<span class="line" id="L675"> U128.new(<span class="tok-number">0xa7f26836f282b732</span>, <span class="tok-number">0x8e6cac7768d7141e</span>), <span class="tok-comment">// 5^141</span>
</span>
<span class="line" id="L676"> U128.new(<span class="tok-number">0xd1ef0244af2364ff</span>, <span class="tok-number">0x3207d795430cd926</span>), <span class="tok-comment">// 5^142</span>
</span>
<span class="line" id="L677"> U128.new(<span class="tok-number">0x8335616aed761f1f</span>, <span class="tok-number">0x7f44e6bd49e807b8</span>), <span class="tok-comment">// 5^143</span>
</span>
<span class="line" id="L678"> U128.new(<span class="tok-number">0xa402b9c5a8d3a6e7</span>, <span class="tok-number">0x5f16206c9c6209a6</span>), <span class="tok-comment">// 5^144</span>
</span>
<span class="line" id="L679"> U128.new(<span class="tok-number">0xcd036837130890a1</span>, <span class="tok-number">0x36dba887c37a8c0f</span>), <span class="tok-comment">// 5^145</span>
</span>
<span class="line" id="L680"> U128.new(<span class="tok-number">0x802221226be55a64</span>, <span class="tok-number">0xc2494954da2c9789</span>), <span class="tok-comment">// 5^146</span>
</span>
<span class="line" id="L681"> U128.new(<span class="tok-number">0xa02aa96b06deb0fd</span>, <span class="tok-number">0xf2db9baa10b7bd6c</span>), <span class="tok-comment">// 5^147</span>
</span>
<span class="line" id="L682"> U128.new(<span class="tok-number">0xc83553c5c8965d3d</span>, <span class="tok-number">0x6f92829494e5acc7</span>), <span class="tok-comment">// 5^148</span>
</span>
<span class="line" id="L683"> U128.new(<span class="tok-number">0xfa42a8b73abbf48c</span>, <span class="tok-number">0xcb772339ba1f17f9</span>), <span class="tok-comment">// 5^149</span>
</span>
<span class="line" id="L684"> U128.new(<span class="tok-number">0x9c69a97284b578d7</span>, <span class="tok-number">0xff2a760414536efb</span>), <span class="tok-comment">// 5^150</span>
</span>
<span class="line" id="L685"> U128.new(<span class="tok-number">0xc38413cf25e2d70d</span>, <span class="tok-number">0xfef5138519684aba</span>), <span class="tok-comment">// 5^151</span>
</span>
<span class="line" id="L686"> U128.new(<span class="tok-number">0xf46518c2ef5b8cd1</span>, <span class="tok-number">0x7eb258665fc25d69</span>), <span class="tok-comment">// 5^152</span>
</span>
<span class="line" id="L687"> U128.new(<span class="tok-number">0x98bf2f79d5993802</span>, <span class="tok-number">0xef2f773ffbd97a61</span>), <span class="tok-comment">// 5^153</span>
</span>
<span class="line" id="L688"> U128.new(<span class="tok-number">0xbeeefb584aff8603</span>, <span class="tok-number">0xaafb550ffacfd8fa</span>), <span class="tok-comment">// 5^154</span>
</span>
<span class="line" id="L689"> U128.new(<span class="tok-number">0xeeaaba2e5dbf6784</span>, <span class="tok-number">0x95ba2a53f983cf38</span>), <span class="tok-comment">// 5^155</span>
</span>
<span class="line" id="L690"> U128.new(<span class="tok-number">0x952ab45cfa97a0b2</span>, <span class="tok-number">0xdd945a747bf26183</span>), <span class="tok-comment">// 5^156</span>
</span>
<span class="line" id="L691"> U128.new(<span class="tok-number">0xba756174393d88df</span>, <span class="tok-number">0x94f971119aeef9e4</span>), <span class="tok-comment">// 5^157</span>
</span>
<span class="line" id="L692"> U128.new(<span class="tok-number">0xe912b9d1478ceb17</span>, <span class="tok-number">0x7a37cd5601aab85d</span>), <span class="tok-comment">// 5^158</span>
</span>
<span class="line" id="L693"> U128.new(<span class="tok-number">0x91abb422ccb812ee</span>, <span class="tok-number">0xac62e055c10ab33a</span>), <span class="tok-comment">// 5^159</span>
</span>
<span class="line" id="L694"> U128.new(<span class="tok-number">0xb616a12b7fe617aa</span>, <span class="tok-number">0x577b986b314d6009</span>), <span class="tok-comment">// 5^160</span>
</span>
<span class="line" id="L695"> U128.new(<span class="tok-number">0xe39c49765fdf9d94</span>, <span class="tok-number">0xed5a7e85fda0b80b</span>), <span class="tok-comment">// 5^161</span>
</span>
<span class="line" id="L696"> U128.new(<span class="tok-number">0x8e41ade9fbebc27d</span>, <span class="tok-number">0x14588f13be847307</span>), <span class="tok-comment">// 5^162</span>
</span>
<span class="line" id="L697"> U128.new(<span class="tok-number">0xb1d219647ae6b31c</span>, <span class="tok-number">0x596eb2d8ae258fc8</span>), <span class="tok-comment">// 5^163</span>
</span>
<span class="line" id="L698"> U128.new(<span class="tok-number">0xde469fbd99a05fe3</span>, <span class="tok-number">0x6fca5f8ed9aef3bb</span>), <span class="tok-comment">// 5^164</span>
</span>
<span class="line" id="L699"> U128.new(<span class="tok-number">0x8aec23d680043bee</span>, <span class="tok-number">0x25de7bb9480d5854</span>), <span class="tok-comment">// 5^165</span>
</span>
<span class="line" id="L700"> U128.new(<span class="tok-number">0xada72ccc20054ae9</span>, <span class="tok-number">0xaf561aa79a10ae6a</span>), <span class="tok-comment">// 5^166</span>
</span>
<span class="line" id="L701"> U128.new(<span class="tok-number">0xd910f7ff28069da4</span>, <span class="tok-number">0x1b2ba1518094da04</span>), <span class="tok-comment">// 5^167</span>
</span>
<span class="line" id="L702"> U128.new(<span class="tok-number">0x87aa9aff79042286</span>, <span class="tok-number">0x90fb44d2f05d0842</span>), <span class="tok-comment">// 5^168</span>
</span>
<span class="line" id="L703"> U128.new(<span class="tok-number">0xa99541bf57452b28</span>, <span class="tok-number">0x353a1607ac744a53</span>), <span class="tok-comment">// 5^169</span>
</span>
<span class="line" id="L704"> U128.new(<span class="tok-number">0xd3fa922f2d1675f2</span>, <span class="tok-number">0x42889b8997915ce8</span>), <span class="tok-comment">// 5^170</span>
</span>
<span class="line" id="L705"> U128.new(<span class="tok-number">0x847c9b5d7c2e09b7</span>, <span class="tok-number">0x69956135febada11</span>), <span class="tok-comment">// 5^171</span>
</span>
<span class="line" id="L706"> U128.new(<span class="tok-number">0xa59bc234db398c25</span>, <span class="tok-number">0x43fab9837e699095</span>), <span class="tok-comment">// 5^172</span>
</span>
<span class="line" id="L707"> U128.new(<span class="tok-number">0xcf02b2c21207ef2e</span>, <span class="tok-number">0x94f967e45e03f4bb</span>), <span class="tok-comment">// 5^173</span>
</span>
<span class="line" id="L708"> U128.new(<span class="tok-number">0x8161afb94b44f57d</span>, <span class="tok-number">0x1d1be0eebac278f5</span>), <span class="tok-comment">// 5^174</span>
</span>
<span class="line" id="L709"> U128.new(<span class="tok-number">0xa1ba1ba79e1632dc</span>, <span class="tok-number">0x6462d92a69731732</span>), <span class="tok-comment">// 5^175</span>
</span>
<span class="line" id="L710"> U128.new(<span class="tok-number">0xca28a291859bbf93</span>, <span class="tok-number">0x7d7b8f7503cfdcfe</span>), <span class="tok-comment">// 5^176</span>
</span>
<span class="line" id="L711"> U128.new(<span class="tok-number">0xfcb2cb35e702af78</span>, <span class="tok-number">0x5cda735244c3d43e</span>), <span class="tok-comment">// 5^177</span>
</span>
<span class="line" id="L712"> U128.new(<span class="tok-number">0x9defbf01b061adab</span>, <span class="tok-number">0x3a0888136afa64a7</span>), <span class="tok-comment">// 5^178</span>
</span>
<span class="line" id="L713"> U128.new(<span class="tok-number">0xc56baec21c7a1916</span>, <span class="tok-number">0x88aaa1845b8fdd0</span>), <span class="tok-comment">// 5^179</span>
</span>
<span class="line" id="L714"> U128.new(<span class="tok-number">0xf6c69a72a3989f5b</span>, <span class="tok-number">0x8aad549e57273d45</span>), <span class="tok-comment">// 5^180</span>
</span>
<span class="line" id="L715"> U128.new(<span class="tok-number">0x9a3c2087a63f6399</span>, <span class="tok-number">0x36ac54e2f678864b</span>), <span class="tok-comment">// 5^181</span>
</span>
<span class="line" id="L716"> U128.new(<span class="tok-number">0xc0cb28a98fcf3c7f</span>, <span class="tok-number">0x84576a1bb416a7dd</span>), <span class="tok-comment">// 5^182</span>
</span>
<span class="line" id="L717"> U128.new(<span class="tok-number">0xf0fdf2d3f3c30b9f</span>, <span class="tok-number">0x656d44a2a11c51d5</span>), <span class="tok-comment">// 5^183</span>
</span>
<span class="line" id="L718"> U128.new(<span class="tok-number">0x969eb7c47859e743</span>, <span class="tok-number">0x9f644ae5a4b1b325</span>), <span class="tok-comment">// 5^184</span>
</span>
<span class="line" id="L719"> U128.new(<span class="tok-number">0xbc4665b596706114</span>, <span class="tok-number">0x873d5d9f0dde1fee</span>), <span class="tok-comment">// 5^185</span>
</span>
<span class="line" id="L720"> U128.new(<span class="tok-number">0xeb57ff22fc0c7959</span>, <span class="tok-number">0xa90cb506d155a7ea</span>), <span class="tok-comment">// 5^186</span>
</span>
<span class="line" id="L721"> U128.new(<span class="tok-number">0x9316ff75dd87cbd8</span>, <span class="tok-number">0x9a7f12442d588f2</span>), <span class="tok-comment">// 5^187</span>
</span>
<span class="line" id="L722"> U128.new(<span class="tok-number">0xb7dcbf5354e9bece</span>, <span class="tok-number">0xc11ed6d538aeb2f</span>), <span class="tok-comment">// 5^188</span>
</span>
<span class="line" id="L723"> U128.new(<span class="tok-number">0xe5d3ef282a242e81</span>, <span class="tok-number">0x8f1668c8a86da5fa</span>), <span class="tok-comment">// 5^189</span>
</span>
<span class="line" id="L724"> U128.new(<span class="tok-number">0x8fa475791a569d10</span>, <span class="tok-number">0xf96e017d694487bc</span>), <span class="tok-comment">// 5^190</span>
</span>
<span class="line" id="L725"> U128.new(<span class="tok-number">0xb38d92d760ec4455</span>, <span class="tok-number">0x37c981dcc395a9ac</span>), <span class="tok-comment">// 5^191</span>
</span>
<span class="line" id="L726"> U128.new(<span class="tok-number">0xe070f78d3927556a</span>, <span class="tok-number">0x85bbe253f47b1417</span>), <span class="tok-comment">// 5^192</span>
</span>
<span class="line" id="L727"> U128.new(<span class="tok-number">0x8c469ab843b89562</span>, <span class="tok-number">0x93956d7478ccec8e</span>), <span class="tok-comment">// 5^193</span>
</span>
<span class="line" id="L728"> U128.new(<span class="tok-number">0xaf58416654a6babb</span>, <span class="tok-number">0x387ac8d1970027b2</span>), <span class="tok-comment">// 5^194</span>
</span>
<span class="line" id="L729"> U128.new(<span class="tok-number">0xdb2e51bfe9d0696a</span>, <span class="tok-number">0x6997b05fcc0319e</span>), <span class="tok-comment">// 5^195</span>
</span>
<span class="line" id="L730"> U128.new(<span class="tok-number">0x88fcf317f22241e2</span>, <span class="tok-number">0x441fece3bdf81f03</span>), <span class="tok-comment">// 5^196</span>
</span>
<span class="line" id="L731"> U128.new(<span class="tok-number">0xab3c2fddeeaad25a</span>, <span class="tok-number">0xd527e81cad7626c3</span>), <span class="tok-comment">// 5^197</span>
</span>
<span class="line" id="L732"> U128.new(<span class="tok-number">0xd60b3bd56a5586f1</span>, <span class="tok-number">0x8a71e223d8d3b074</span>), <span class="tok-comment">// 5^198</span>
</span>
<span class="line" id="L733"> U128.new(<span class="tok-number">0x85c7056562757456</span>, <span class="tok-number">0xf6872d5667844e49</span>), <span class="tok-comment">// 5^199</span>
</span>
<span class="line" id="L734"> U128.new(<span class="tok-number">0xa738c6bebb12d16c</span>, <span class="tok-number">0xb428f8ac016561db</span>), <span class="tok-comment">// 5^200</span>
</span>
<span class="line" id="L735"> U128.new(<span class="tok-number">0xd106f86e69d785c7</span>, <span class="tok-number">0xe13336d701beba52</span>), <span class="tok-comment">// 5^201</span>
</span>
<span class="line" id="L736"> U128.new(<span class="tok-number">0x82a45b450226b39c</span>, <span class="tok-number">0xecc0024661173473</span>), <span class="tok-comment">// 5^202</span>
</span>
<span class="line" id="L737"> U128.new(<span class="tok-number">0xa34d721642b06084</span>, <span class="tok-number">0x27f002d7f95d0190</span>), <span class="tok-comment">// 5^203</span>
</span>
<span class="line" id="L738"> U128.new(<span class="tok-number">0xcc20ce9bd35c78a5</span>, <span class="tok-number">0x31ec038df7b441f4</span>), <span class="tok-comment">// 5^204</span>
</span>
<span class="line" id="L739"> U128.new(<span class="tok-number">0xff290242c83396ce</span>, <span class="tok-number">0x7e67047175a15271</span>), <span class="tok-comment">// 5^205</span>
</span>
<span class="line" id="L740"> U128.new(<span class="tok-number">0x9f79a169bd203e41</span>, <span class="tok-number">0xf0062c6e984d386</span>), <span class="tok-comment">// 5^206</span>
</span>
<span class="line" id="L741"> U128.new(<span class="tok-number">0xc75809c42c684dd1</span>, <span class="tok-number">0x52c07b78a3e60868</span>), <span class="tok-comment">// 5^207</span>
</span>
<span class="line" id="L742"> U128.new(<span class="tok-number">0xf92e0c3537826145</span>, <span class="tok-number">0xa7709a56ccdf8a82</span>), <span class="tok-comment">// 5^208</span>
</span>
<span class="line" id="L743"> U128.new(<span class="tok-number">0x9bbcc7a142b17ccb</span>, <span class="tok-number">0x88a66076400bb691</span>), <span class="tok-comment">// 5^209</span>
</span>
<span class="line" id="L744"> U128.new(<span class="tok-number">0xc2abf989935ddbfe</span>, <span class="tok-number">0x6acff893d00ea435</span>), <span class="tok-comment">// 5^210</span>
</span>
<span class="line" id="L745"> U128.new(<span class="tok-number">0xf356f7ebf83552fe</span>, <span class="tok-number">0x583f6b8c4124d43</span>), <span class="tok-comment">// 5^211</span>
</span>
<span class="line" id="L746"> U128.new(<span class="tok-number">0x98165af37b2153de</span>, <span class="tok-number">0xc3727a337a8b704a</span>), <span class="tok-comment">// 5^212</span>
</span>
<span class="line" id="L747"> U128.new(<span class="tok-number">0xbe1bf1b059e9a8d6</span>, <span class="tok-number">0x744f18c0592e4c5c</span>), <span class="tok-comment">// 5^213</span>
</span>
<span class="line" id="L748"> U128.new(<span class="tok-number">0xeda2ee1c7064130c</span>, <span class="tok-number">0x1162def06f79df73</span>), <span class="tok-comment">// 5^214</span>
</span>
<span class="line" id="L749"> U128.new(<span class="tok-number">0x9485d4d1c63e8be7</span>, <span class="tok-number">0x8addcb5645ac2ba8</span>), <span class="tok-comment">// 5^215</span>
</span>
<span class="line" id="L750"> U128.new(<span class="tok-number">0xb9a74a0637ce2ee1</span>, <span class="tok-number">0x6d953e2bd7173692</span>), <span class="tok-comment">// 5^216</span>
</span>
<span class="line" id="L751"> U128.new(<span class="tok-number">0xe8111c87c5c1ba99</span>, <span class="tok-number">0xc8fa8db6ccdd0437</span>), <span class="tok-comment">// 5^217</span>
</span>
<span class="line" id="L752"> U128.new(<span class="tok-number">0x910ab1d4db9914a0</span>, <span class="tok-number">0x1d9c9892400a22a2</span>), <span class="tok-comment">// 5^218</span>
</span>
<span class="line" id="L753"> U128.new(<span class="tok-number">0xb54d5e4a127f59c8</span>, <span class="tok-number">0x2503beb6d00cab4b</span>), <span class="tok-comment">// 5^219</span>
</span>
<span class="line" id="L754"> U128.new(<span class="tok-number">0xe2a0b5dc971f303a</span>, <span class="tok-number">0x2e44ae64840fd61d</span>), <span class="tok-comment">// 5^220</span>
</span>
<span class="line" id="L755"> U128.new(<span class="tok-number">0x8da471a9de737e24</span>, <span class="tok-number">0x5ceaecfed289e5d2</span>), <span class="tok-comment">// 5^221</span>
</span>
<span class="line" id="L756"> U128.new(<span class="tok-number">0xb10d8e1456105dad</span>, <span class="tok-number">0x7425a83e872c5f47</span>), <span class="tok-comment">// 5^222</span>
</span>
<span class="line" id="L757"> U128.new(<span class="tok-number">0xdd50f1996b947518</span>, <span class="tok-number">0xd12f124e28f77719</span>), <span class="tok-comment">// 5^223</span>
</span>
<span class="line" id="L758"> U128.new(<span class="tok-number">0x8a5296ffe33cc92f</span>, <span class="tok-number">0x82bd6b70d99aaa6f</span>), <span class="tok-comment">// 5^224</span>
</span>
<span class="line" id="L759"> U128.new(<span class="tok-number">0xace73cbfdc0bfb7b</span>, <span class="tok-number">0x636cc64d1001550b</span>), <span class="tok-comment">// 5^225</span>
</span>
<span class="line" id="L760"> U128.new(<span class="tok-number">0xd8210befd30efa5a</span>, <span class="tok-number">0x3c47f7e05401aa4e</span>), <span class="tok-comment">// 5^226</span>
</span>
<span class="line" id="L761"> U128.new(<span class="tok-number">0x8714a775e3e95c78</span>, <span class="tok-number">0x65acfaec34810a71</span>), <span class="tok-comment">// 5^227</span>
</span>
<span class="line" id="L762"> U128.new(<span class="tok-number">0xa8d9d1535ce3b396</span>, <span class="tok-number">0x7f1839a741a14d0d</span>), <span class="tok-comment">// 5^228</span>
</span>
<span class="line" id="L763"> U128.new(<span class="tok-number">0xd31045a8341ca07c</span>, <span class="tok-number">0x1ede48111209a050</span>), <span class="tok-comment">// 5^229</span>
</span>
<span class="line" id="L764"> U128.new(<span class="tok-number">0x83ea2b892091e44d</span>, <span class="tok-number">0x934aed0aab460432</span>), <span class="tok-comment">// 5^230</span>
</span>
<span class="line" id="L765"> U128.new(<span class="tok-number">0xa4e4b66b68b65d60</span>, <span class="tok-number">0xf81da84d5617853f</span>), <span class="tok-comment">// 5^231</span>
</span>
<span class="line" id="L766"> U128.new(<span class="tok-number">0xce1de40642e3f4b9</span>, <span class="tok-number">0x36251260ab9d668e</span>), <span class="tok-comment">// 5^232</span>
</span>
<span class="line" id="L767"> U128.new(<span class="tok-number">0x80d2ae83e9ce78f3</span>, <span class="tok-number">0xc1d72b7c6b426019</span>), <span class="tok-comment">// 5^233</span>
</span>
<span class="line" id="L768"> U128.new(<span class="tok-number">0xa1075a24e4421730</span>, <span class="tok-number">0xb24cf65b8612f81f</span>), <span class="tok-comment">// 5^234</span>
</span>
<span class="line" id="L769"> U128.new(<span class="tok-number">0xc94930ae1d529cfc</span>, <span class="tok-number">0xdee033f26797b627</span>), <span class="tok-comment">// 5^235</span>
</span>
<span class="line" id="L770"> U128.new(<span class="tok-number">0xfb9b7cd9a4a7443c</span>, <span class="tok-number">0x169840ef017da3b1</span>), <span class="tok-comment">// 5^236</span>
</span>
<span class="line" id="L771"> U128.new(<span class="tok-number">0x9d412e0806e88aa5</span>, <span class="tok-number">0x8e1f289560ee864e</span>), <span class="tok-comment">// 5^237</span>
</span>
<span class="line" id="L772"> U128.new(<span class="tok-number">0xc491798a08a2ad4e</span>, <span class="tok-number">0xf1a6f2bab92a27e2</span>), <span class="tok-comment">// 5^238</span>
</span>
<span class="line" id="L773"> U128.new(<span class="tok-number">0xf5b5d7ec8acb58a2</span>, <span class="tok-number">0xae10af696774b1db</span>), <span class="tok-comment">// 5^239</span>
</span>
<span class="line" id="L774"> U128.new(<span class="tok-number">0x9991a6f3d6bf1765</span>, <span class="tok-number">0xacca6da1e0a8ef29</span>), <span class="tok-comment">// 5^240</span>
</span>
<span class="line" id="L775"> U128.new(<span class="tok-number">0xbff610b0cc6edd3f</span>, <span class="tok-number">0x17fd090a58d32af3</span>), <span class="tok-comment">// 5^241</span>
</span>
<span class="line" id="L776"> U128.new(<span class="tok-number">0xeff394dcff8a948e</span>, <span class="tok-number">0xddfc4b4cef07f5b0</span>), <span class="tok-comment">// 5^242</span>
</span>
<span class="line" id="L777"> U128.new(<span class="tok-number">0x95f83d0a1fb69cd9</span>, <span class="tok-number">0x4abdaf101564f98e</span>), <span class="tok-comment">// 5^243</span>
</span>
<span class="line" id="L778"> U128.new(<span class="tok-number">0xbb764c4ca7a4440f</span>, <span class="tok-number">0x9d6d1ad41abe37f1</span>), <span class="tok-comment">// 5^244</span>
</span>
<span class="line" id="L779"> U128.new(<span class="tok-number">0xea53df5fd18d5513</span>, <span class="tok-number">0x84c86189216dc5ed</span>), <span class="tok-comment">// 5^245</span>
</span>
<span class="line" id="L780"> U128.new(<span class="tok-number">0x92746b9be2f8552c</span>, <span class="tok-number">0x32fd3cf5b4e49bb4</span>), <span class="tok-comment">// 5^246</span>
</span>
<span class="line" id="L781"> U128.new(<span class="tok-number">0xb7118682dbb66a77</span>, <span class="tok-number">0x3fbc8c33221dc2a1</span>), <span class="tok-comment">// 5^247</span>
</span>
<span class="line" id="L782"> U128.new(<span class="tok-number">0xe4d5e82392a40515</span>, <span class="tok-number">0xfabaf3feaa5334a</span>), <span class="tok-comment">// 5^248</span>
</span>
<span class="line" id="L783"> U128.new(<span class="tok-number">0x8f05b1163ba6832d</span>, <span class="tok-number">0x29cb4d87f2a7400e</span>), <span class="tok-comment">// 5^249</span>
</span>
<span class="line" id="L784"> U128.new(<span class="tok-number">0xb2c71d5bca9023f8</span>, <span class="tok-number">0x743e20e9ef511012</span>), <span class="tok-comment">// 5^250</span>
</span>
<span class="line" id="L785"> U128.new(<span class="tok-number">0xdf78e4b2bd342cf6</span>, <span class="tok-number">0x914da9246b255416</span>), <span class="tok-comment">// 5^251</span>
</span>
<span class="line" id="L786"> U128.new(<span class="tok-number">0x8bab8eefb6409c1a</span>, <span class="tok-number">0x1ad089b6c2f7548e</span>), <span class="tok-comment">// 5^252</span>
</span>
<span class="line" id="L787"> U128.new(<span class="tok-number">0xae9672aba3d0c320</span>, <span class="tok-number">0xa184ac2473b529b1</span>), <span class="tok-comment">// 5^253</span>
</span>
<span class="line" id="L788"> U128.new(<span class="tok-number">0xda3c0f568cc4f3e8</span>, <span class="tok-number">0xc9e5d72d90a2741e</span>), <span class="tok-comment">// 5^254</span>
</span>
<span class="line" id="L789"> U128.new(<span class="tok-number">0x8865899617fb1871</span>, <span class="tok-number">0x7e2fa67c7a658892</span>), <span class="tok-comment">// 5^255</span>
</span>
<span class="line" id="L790"> U128.new(<span class="tok-number">0xaa7eebfb9df9de8d</span>, <span class="tok-number">0xddbb901b98feeab7</span>), <span class="tok-comment">// 5^256</span>
</span>
<span class="line" id="L791"> U128.new(<span class="tok-number">0xd51ea6fa85785631</span>, <span class="tok-number">0x552a74227f3ea565</span>), <span class="tok-comment">// 5^257</span>
</span>
<span class="line" id="L792"> U128.new(<span class="tok-number">0x8533285c936b35de</span>, <span class="tok-number">0xd53a88958f87275f</span>), <span class="tok-comment">// 5^258</span>
</span>
<span class="line" id="L793"> U128.new(<span class="tok-number">0xa67ff273b8460356</span>, <span class="tok-number">0x8a892abaf368f137</span>), <span class="tok-comment">// 5^259</span>
</span>
<span class="line" id="L794"> U128.new(<span class="tok-number">0xd01fef10a657842c</span>, <span class="tok-number">0x2d2b7569b0432d85</span>), <span class="tok-comment">// 5^260</span>
</span>
<span class="line" id="L795"> U128.new(<span class="tok-number">0x8213f56a67f6b29b</span>, <span class="tok-number">0x9c3b29620e29fc73</span>), <span class="tok-comment">// 5^261</span>
</span>
<span class="line" id="L796"> U128.new(<span class="tok-number">0xa298f2c501f45f42</span>, <span class="tok-number">0x8349f3ba91b47b8f</span>), <span class="tok-comment">// 5^262</span>
</span>
<span class="line" id="L797"> U128.new(<span class="tok-number">0xcb3f2f7642717713</span>, <span class="tok-number">0x241c70a936219a73</span>), <span class="tok-comment">// 5^263</span>
</span>
<span class="line" id="L798"> U128.new(<span class="tok-number">0xfe0efb53d30dd4d7</span>, <span class="tok-number">0xed238cd383aa0110</span>), <span class="tok-comment">// 5^264</span>
</span>
<span class="line" id="L799"> U128.new(<span class="tok-number">0x9ec95d1463e8a506</span>, <span class="tok-number">0xf4363804324a40aa</span>), <span class="tok-comment">// 5^265</span>
</span>
<span class="line" id="L800"> U128.new(<span class="tok-number">0xc67bb4597ce2ce48</span>, <span class="tok-number">0xb143c6053edcd0d5</span>), <span class="tok-comment">// 5^266</span>
</span>
<span class="line" id="L801"> U128.new(<span class="tok-number">0xf81aa16fdc1b81da</span>, <span class="tok-number">0xdd94b7868e94050a</span>), <span class="tok-comment">// 5^267</span>
</span>
<span class="line" id="L802"> U128.new(<span class="tok-number">0x9b10a4e5e9913128</span>, <span class="tok-number">0xca7cf2b4191c8326</span>), <span class="tok-comment">// 5^268</span>
</span>
<span class="line" id="L803"> U128.new(<span class="tok-number">0xc1d4ce1f63f57d72</span>, <span class="tok-number">0xfd1c2f611f63a3f0</span>), <span class="tok-comment">// 5^269</span>
</span>
<span class="line" id="L804"> U128.new(<span class="tok-number">0xf24a01a73cf2dccf</span>, <span class="tok-number">0xbc633b39673c8cec</span>), <span class="tok-comment">// 5^270</span>
</span>
<span class="line" id="L805"> U128.new(<span class="tok-number">0x976e41088617ca01</span>, <span class="tok-number">0xd5be0503e085d813</span>), <span class="tok-comment">// 5^271</span>
</span>
<span class="line" id="L806"> U128.new(<span class="tok-number">0xbd49d14aa79dbc82</span>, <span class="tok-number">0x4b2d8644d8a74e18</span>), <span class="tok-comment">// 5^272</span>
</span>
<span class="line" id="L807"> U128.new(<span class="tok-number">0xec9c459d51852ba2</span>, <span class="tok-number">0xddf8e7d60ed1219e</span>), <span class="tok-comment">// 5^273</span>
</span>
<span class="line" id="L808"> U128.new(<span class="tok-number">0x93e1ab8252f33b45</span>, <span class="tok-number">0xcabb90e5c942b503</span>), <span class="tok-comment">// 5^274</span>
</span>
<span class="line" id="L809"> U128.new(<span class="tok-number">0xb8da1662e7b00a17</span>, <span class="tok-number">0x3d6a751f3b936243</span>), <span class="tok-comment">// 5^275</span>
</span>
<span class="line" id="L810"> U128.new(<span class="tok-number">0xe7109bfba19c0c9d</span>, <span class="tok-number">0xcc512670a783ad4</span>), <span class="tok-comment">// 5^276</span>
</span>
<span class="line" id="L811"> U128.new(<span class="tok-number">0x906a617d450187e2</span>, <span class="tok-number">0x27fb2b80668b24c5</span>), <span class="tok-comment">// 5^277</span>
</span>
<span class="line" id="L812"> U128.new(<span class="tok-number">0xb484f9dc9641e9da</span>, <span class="tok-number">0xb1f9f660802dedf6</span>), <span class="tok-comment">// 5^278</span>
</span>
<span class="line" id="L813"> U128.new(<span class="tok-number">0xe1a63853bbd26451</span>, <span class="tok-number">0x5e7873f8a0396973</span>), <span class="tok-comment">// 5^279</span>
</span>
<span class="line" id="L814"> U128.new(<span class="tok-number">0x8d07e33455637eb2</span>, <span class="tok-number">0xdb0b487b6423e1e8</span>), <span class="tok-comment">// 5^280</span>
</span>
<span class="line" id="L815"> U128.new(<span class="tok-number">0xb049dc016abc5e5f</span>, <span class="tok-number">0x91ce1a9a3d2cda62</span>), <span class="tok-comment">// 5^281</span>
</span>
<span class="line" id="L816"> U128.new(<span class="tok-number">0xdc5c5301c56b75f7</span>, <span class="tok-number">0x7641a140cc7810fb</span>), <span class="tok-comment">// 5^282</span>
</span>
<span class="line" id="L817"> U128.new(<span class="tok-number">0x89b9b3e11b6329ba</span>, <span class="tok-number">0xa9e904c87fcb0a9d</span>), <span class="tok-comment">// 5^283</span>
</span>
<span class="line" id="L818"> U128.new(<span class="tok-number">0xac2820d9623bf429</span>, <span class="tok-number">0x546345fa9fbdcd44</span>), <span class="tok-comment">// 5^284</span>
</span>
<span class="line" id="L819"> U128.new(<span class="tok-number">0xd732290fbacaf133</span>, <span class="tok-number">0xa97c177947ad4095</span>), <span class="tok-comment">// 5^285</span>
</span>
<span class="line" id="L820"> U128.new(<span class="tok-number">0x867f59a9d4bed6c0</span>, <span class="tok-number">0x49ed8eabcccc485d</span>), <span class="tok-comment">// 5^286</span>
</span>
<span class="line" id="L821"> U128.new(<span class="tok-number">0xa81f301449ee8c70</span>, <span class="tok-number">0x5c68f256bfff5a74</span>), <span class="tok-comment">// 5^287</span>
</span>
<span class="line" id="L822"> U128.new(<span class="tok-number">0xd226fc195c6a2f8c</span>, <span class="tok-number">0x73832eec6fff3111</span>), <span class="tok-comment">// 5^288</span>
</span>
<span class="line" id="L823"> U128.new(<span class="tok-number">0x83585d8fd9c25db7</span>, <span class="tok-number">0xc831fd53c5ff7eab</span>), <span class="tok-comment">// 5^289</span>
</span>
<span class="line" id="L824"> U128.new(<span class="tok-number">0xa42e74f3d032f525</span>, <span class="tok-number">0xba3e7ca8b77f5e55</span>), <span class="tok-comment">// 5^290</span>
</span>
<span class="line" id="L825"> U128.new(<span class="tok-number">0xcd3a1230c43fb26f</span>, <span class="tok-number">0x28ce1bd2e55f35eb</span>), <span class="tok-comment">// 5^291</span>
</span>
<span class="line" id="L826"> U128.new(<span class="tok-number">0x80444b5e7aa7cf85</span>, <span class="tok-number">0x7980d163cf5b81b3</span>), <span class="tok-comment">// 5^292</span>
</span>
<span class="line" id="L827"> U128.new(<span class="tok-number">0xa0555e361951c366</span>, <span class="tok-number">0xd7e105bcc332621f</span>), <span class="tok-comment">// 5^293</span>
</span>
<span class="line" id="L828"> U128.new(<span class="tok-number">0xc86ab5c39fa63440</span>, <span class="tok-number">0x8dd9472bf3fefaa7</span>), <span class="tok-comment">// 5^294</span>
</span>
<span class="line" id="L829"> U128.new(<span class="tok-number">0xfa856334878fc150</span>, <span class="tok-number">0xb14f98f6f0feb951</span>), <span class="tok-comment">// 5^295</span>
</span>
<span class="line" id="L830"> U128.new(<span class="tok-number">0x9c935e00d4b9d8d2</span>, <span class="tok-number">0x6ed1bf9a569f33d3</span>), <span class="tok-comment">// 5^296</span>
</span>
<span class="line" id="L831"> U128.new(<span class="tok-number">0xc3b8358109e84f07</span>, <span class="tok-number">0xa862f80ec4700c8</span>), <span class="tok-comment">// 5^297</span>
</span>
<span class="line" id="L832"> U128.new(<span class="tok-number">0xf4a642e14c6262c8</span>, <span class="tok-number">0xcd27bb612758c0fa</span>), <span class="tok-comment">// 5^298</span>
</span>
<span class="line" id="L833"> U128.new(<span class="tok-number">0x98e7e9cccfbd7dbd</span>, <span class="tok-number">0x8038d51cb897789c</span>), <span class="tok-comment">// 5^299</span>
</span>
<span class="line" id="L834"> U128.new(<span class="tok-number">0xbf21e44003acdd2c</span>, <span class="tok-number">0xe0470a63e6bd56c3</span>), <span class="tok-comment">// 5^300</span>
</span>
<span class="line" id="L835"> U128.new(<span class="tok-number">0xeeea5d5004981478</span>, <span class="tok-number">0x1858ccfce06cac74</span>), <span class="tok-comment">// 5^301</span>
</span>
<span class="line" id="L836"> U128.new(<span class="tok-number">0x95527a5202df0ccb</span>, <span class="tok-number">0xf37801e0c43ebc8</span>), <span class="tok-comment">// 5^302</span>
</span>
<span class="line" id="L837"> U128.new(<span class="tok-number">0xbaa718e68396cffd</span>, <span class="tok-number">0xd30560258f54e6ba</span>), <span class="tok-comment">// 5^303</span>
</span>
<span class="line" id="L838"> U128.new(<span class="tok-number">0xe950df20247c83fd</span>, <span class="tok-number">0x47c6b82ef32a2069</span>), <span class="tok-comment">// 5^304</span>
</span>
<span class="line" id="L839"> U128.new(<span class="tok-number">0x91d28b7416cdd27e</span>, <span class="tok-number">0x4cdc331d57fa5441</span>), <span class="tok-comment">// 5^305</span>
</span>
<span class="line" id="L840"> U128.new(<span class="tok-number">0xb6472e511c81471d</span>, <span class="tok-number">0xe0133fe4adf8e952</span>), <span class="tok-comment">// 5^306</span>
</span>
<span class="line" id="L841"> U128.new(<span class="tok-number">0xe3d8f9e563a198e5</span>, <span class="tok-number">0x58180fddd97723a6</span>), <span class="tok-comment">// 5^307</span>
</span>
<span class="line" id="L842"> U128.new(<span class="tok-number">0x8e679c2f5e44ff8f</span>, <span class="tok-number">0x570f09eaa7ea7648</span>), <span class="tok-comment">// 5^308</span>
</span>
<span class="line" id="L843">};</span>
<span class="line" id="L844"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! Representation of a float as the significant digits and exponent.</span></span>
<span class="line" id="L2"><span class="tok-comment">//! The fast path algorithm using machine-sized integers and floats.</span></span>
<span class="line" id="L3"><span class="tok-comment">//!</span></span>
<span class="line" id="L4"><span class="tok-comment">//! This only works if both the mantissa and the exponent can be exactly</span></span>
<span class="line" id="L5"><span class="tok-comment">//! represented as a machine float, since IEE-754 guarantees no rounding</span></span>
<span class="line" id="L6"><span class="tok-comment">//! will occur.</span></span>
<span class="line" id="L7"><span class="tok-comment">//!</span></span>
<span class="line" id="L8"><span class="tok-comment">//! There is an exception: disguised fast-path cases, where we can shift</span></span>
<span class="line" id="L9"><span class="tok-comment">//! powers-of-10 from the exponent to the significant digits.</span></span>
<span class="line" id="L10"></span>
<span class="line" id="L11"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L12"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L13"><span class="tok-kw">const</span> common = <span class="tok-builtin">@import</span>(<span class="tok-str">"common.zig"</span>);</span>
<span class="line" id="L14"><span class="tok-kw">const</span> FloatInfo = <span class="tok-builtin">@import</span>(<span class="tok-str">"FloatInfo.zig"</span>);</span>
<span class="line" id="L15"><span class="tok-kw">const</span> Number = common.Number;</span>
<span class="line" id="L16"><span class="tok-kw">const</span> floatFromU64 = common.floatFromU64;</span>
<span class="line" id="L17"></span>
<span class="line" id="L18"><span class="tok-kw">fn</span> <span class="tok-fn">isFastPath</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, n: Number(T)) <span class="tok-type">bool</span> {</span>
<span class="line" id="L19"> <span class="tok-kw">const</span> info = FloatInfo.from(T);</span>
<span class="line" id="L20"></span>
<span class="line" id="L21"> <span class="tok-kw">return</span> info.min_exponent_fast_path <= n.exponent <span class="tok-kw">and</span></span>
<span class="line" id="L22"> n.exponent <= info.max_exponent_fast_path_disguised <span class="tok-kw">and</span></span>
<span class="line" id="L23"> n.mantissa <= info.max_mantissa_fast_path <span class="tok-kw">and</span></span>
<span class="line" id="L24"> !n.many_digits;</span>
<span class="line" id="L25">}</span>
<span class="line" id="L26"></span>
<span class="line" id="L27"><span class="tok-comment">// upper bound for tables is floor(mantissaDigits(T) / log2(5))</span>
</span>
<span class="line" id="L28"><span class="tok-comment">// for f64 this is floor(53 / log2(5)) = 22.</span>
</span>
<span class="line" id="L29"><span class="tok-comment">//</span>
</span>
<span class="line" id="L30"><span class="tok-comment">// Must have max_disguised_fast_path - max_exponent_fast_path entries. (82 - 48 = 34 for f128)</span>
</span>
<span class="line" id="L31"><span class="tok-kw">fn</span> <span class="tok-fn">fastPow10</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, i: <span class="tok-type">usize</span>) T {</span>
<span class="line" id="L32"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (T) {</span>
<span class="line" id="L33"> <span class="tok-type">f16</span> => ([<span class="tok-number">8</span>]<span class="tok-type">f16</span>{</span>
<span class="line" id="L34"> <span class="tok-number">1e0</span>, <span class="tok-number">1e1</span>, <span class="tok-number">1e2</span>, <span class="tok-number">1e3</span>, <span class="tok-number">1e4</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>,</span>
<span class="line" id="L35"> })[i & <span class="tok-number">7</span>],</span>
<span class="line" id="L36"></span>
<span class="line" id="L37"> <span class="tok-type">f32</span> => ([<span class="tok-number">16</span>]<span class="tok-type">f32</span>{</span>
<span class="line" id="L38"> <span class="tok-number">1e0</span>, <span class="tok-number">1e1</span>, <span class="tok-number">1e2</span>, <span class="tok-number">1e3</span>, <span class="tok-number">1e4</span>, <span class="tok-number">1e5</span>, <span class="tok-number">1e6</span>, <span class="tok-number">1e7</span>,</span>
<span class="line" id="L39"> <span class="tok-number">1e8</span>, <span class="tok-number">1e9</span>, <span class="tok-number">1e10</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>,</span>
<span class="line" id="L40"> })[i & <span class="tok-number">15</span>],</span>
<span class="line" id="L41"></span>
<span class="line" id="L42"> <span class="tok-type">f64</span> => ([<span class="tok-number">32</span>]<span class="tok-type">f64</span>{</span>
<span class="line" id="L43"> <span class="tok-number">1e0</span>, <span class="tok-number">1e1</span>, <span class="tok-number">1e2</span>, <span class="tok-number">1e3</span>, <span class="tok-number">1e4</span>, <span class="tok-number">1e5</span>, <span class="tok-number">1e6</span>, <span class="tok-number">1e7</span>,</span>
<span class="line" id="L44"> <span class="tok-number">1e8</span>, <span class="tok-number">1e9</span>, <span class="tok-number">1e10</span>, <span class="tok-number">1e11</span>, <span class="tok-number">1e12</span>, <span class="tok-number">1e13</span>, <span class="tok-number">1e14</span>, <span class="tok-number">1e15</span>,</span>
<span class="line" id="L45"> <span class="tok-number">1e16</span>, <span class="tok-number">1e17</span>, <span class="tok-number">1e18</span>, <span class="tok-number">1e19</span>, <span class="tok-number">1e20</span>, <span class="tok-number">1e21</span>, <span class="tok-number">1e22</span>, <span class="tok-number">0</span>,</span>
<span class="line" id="L46"> <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>,</span>
<span class="line" id="L47"> })[i & <span class="tok-number">31</span>],</span>
<span class="line" id="L48"></span>
<span class="line" id="L49"> <span class="tok-type">f128</span> => ([<span class="tok-number">64</span>]<span class="tok-type">f128</span>{</span>
<span class="line" id="L50"> <span class="tok-number">1e0</span>, <span class="tok-number">1e1</span>, <span class="tok-number">1e2</span>, <span class="tok-number">1e3</span>, <span class="tok-number">1e4</span>, <span class="tok-number">1e5</span>, <span class="tok-number">1e6</span>, <span class="tok-number">1e7</span>,</span>
<span class="line" id="L51"> <span class="tok-number">1e8</span>, <span class="tok-number">1e9</span>, <span class="tok-number">1e10</span>, <span class="tok-number">1e11</span>, <span class="tok-number">1e12</span>, <span class="tok-number">1e13</span>, <span class="tok-number">1e14</span>, <span class="tok-number">1e15</span>,</span>
<span class="line" id="L52"> <span class="tok-number">1e16</span>, <span class="tok-number">1e17</span>, <span class="tok-number">1e18</span>, <span class="tok-number">1e19</span>, <span class="tok-number">1e20</span>, <span class="tok-number">1e21</span>, <span class="tok-number">1e22</span>, <span class="tok-number">1e23</span>,</span>
<span class="line" id="L53"> <span class="tok-number">1e24</span>, <span class="tok-number">1e25</span>, <span class="tok-number">1e26</span>, <span class="tok-number">1e27</span>, <span class="tok-number">1e28</span>, <span class="tok-number">1e29</span>, <span class="tok-number">1e30</span>, <span class="tok-number">1e31</span>,</span>
<span class="line" id="L54"> <span class="tok-number">1e32</span>, <span class="tok-number">1e33</span>, <span class="tok-number">1e34</span>, <span class="tok-number">1e35</span>, <span class="tok-number">1e36</span>, <span class="tok-number">1e37</span>, <span class="tok-number">1e38</span>, <span class="tok-number">1e39</span>,</span>
<span class="line" id="L55"> <span class="tok-number">1e40</span>, <span class="tok-number">1e41</span>, <span class="tok-number">1e42</span>, <span class="tok-number">1e43</span>, <span class="tok-number">1e44</span>, <span class="tok-number">1e45</span>, <span class="tok-number">1e46</span>, <span class="tok-number">1e47</span>,</span>
<span class="line" id="L56"> <span class="tok-number">1e48</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>,</span>
<span class="line" id="L57"> <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>,</span>
<span class="line" id="L58"> })[i & <span class="tok-number">63</span>],</span>
<span class="line" id="L59"></span>
<span class="line" id="L60"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L61"> };</span>
<span class="line" id="L62">}</span>
<span class="line" id="L63"></span>
<span class="line" id="L64"><span class="tok-kw">fn</span> <span class="tok-fn">fastIntPow10</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, i: <span class="tok-type">usize</span>) T {</span>
<span class="line" id="L65"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (T) {</span>
<span class="line" id="L66"> <span class="tok-type">u64</span> => ([<span class="tok-number">16</span>]<span class="tok-type">u64</span>{</span>
<span class="line" id="L67"> <span class="tok-number">1</span>, <span class="tok-number">10</span>, <span class="tok-number">100</span>, <span class="tok-number">1000</span>,</span>
<span class="line" id="L68"> <span class="tok-number">10000</span>, <span class="tok-number">100000</span>, <span class="tok-number">1000000</span>, <span class="tok-number">10000000</span>,</span>
<span class="line" id="L69"> <span class="tok-number">100000000</span>, <span class="tok-number">1000000000</span>, <span class="tok-number">10000000000</span>, <span class="tok-number">100000000000</span>,</span>
<span class="line" id="L70"> <span class="tok-number">1000000000000</span>, <span class="tok-number">10000000000000</span>, <span class="tok-number">100000000000000</span>, <span class="tok-number">1000000000000000</span>,</span>
<span class="line" id="L71"> })[i],</span>
<span class="line" id="L72"></span>
<span class="line" id="L73"> <span class="tok-type">u128</span> => ([<span class="tok-number">35</span>]<span class="tok-type">u128</span>{</span>
<span class="line" id="L74"> <span class="tok-number">1</span>, <span class="tok-number">10</span>,</span>
<span class="line" id="L75"> <span class="tok-number">100</span>, <span class="tok-number">1000</span>,</span>
<span class="line" id="L76"> <span class="tok-number">10000</span>, <span class="tok-number">100000</span>,</span>
<span class="line" id="L77"> <span class="tok-number">1000000</span>, <span class="tok-number">10000000</span>,</span>
<span class="line" id="L78"> <span class="tok-number">100000000</span>, <span class="tok-number">1000000000</span>,</span>
<span class="line" id="L79"> <span class="tok-number">10000000000</span>, <span class="tok-number">100000000000</span>,</span>
<span class="line" id="L80"> <span class="tok-number">1000000000000</span>, <span class="tok-number">10000000000000</span>,</span>
<span class="line" id="L81"> <span class="tok-number">100000000000000</span>, <span class="tok-number">1000000000000000</span>,</span>
<span class="line" id="L82"> <span class="tok-number">10000000000000000</span>, <span class="tok-number">100000000000000000</span>,</span>
<span class="line" id="L83"> <span class="tok-number">1000000000000000000</span>, <span class="tok-number">10000000000000000000</span>,</span>
<span class="line" id="L84"> <span class="tok-number">100000000000000000000</span>, <span class="tok-number">1000000000000000000000</span>,</span>
<span class="line" id="L85"> <span class="tok-number">10000000000000000000000</span>, <span class="tok-number">100000000000000000000000</span>,</span>
<span class="line" id="L86"> <span class="tok-number">1000000000000000000000000</span>, <span class="tok-number">10000000000000000000000000</span>,</span>
<span class="line" id="L87"> <span class="tok-number">100000000000000000000000000</span>, <span class="tok-number">1000000000000000000000000000</span>,</span>
<span class="line" id="L88"> <span class="tok-number">10000000000000000000000000000</span>, <span class="tok-number">100000000000000000000000000000</span>,</span>
<span class="line" id="L89"> <span class="tok-number">1000000000000000000000000000000</span>, <span class="tok-number">10000000000000000000000000000000</span>,</span>
<span class="line" id="L90"> <span class="tok-number">100000000000000000000000000000000</span>, <span class="tok-number">1000000000000000000000000000000000</span>,</span>
<span class="line" id="L91"> <span class="tok-number">10000000000000000000000000000000000</span>,</span>
<span class="line" id="L92"> })[i],</span>
<span class="line" id="L93"></span>
<span class="line" id="L94"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L95"> };</span>
<span class="line" id="L96">}</span>
<span class="line" id="L97"></span>
<span class="line" id="L98"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">convertFast</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, n: Number(T)) ?T {</span>
<span class="line" id="L99"> <span class="tok-kw">const</span> MantissaT = common.mantissaType(T);</span>
<span class="line" id="L100"></span>
<span class="line" id="L101"> <span class="tok-kw">if</span> (!isFastPath(T, n)) {</span>
<span class="line" id="L102"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L103"> }</span>
<span class="line" id="L104"></span>
<span class="line" id="L105"> <span class="tok-comment">// TODO: x86 (no SSE/SSE2) requires x87 FPU to be setup correctly with fldcw</span>
</span>
<span class="line" id="L106"> <span class="tok-kw">const</span> info = FloatInfo.from(T);</span>
<span class="line" id="L107"></span>
<span class="line" id="L108"> <span class="tok-kw">var</span> value: T = <span class="tok-number">0</span>;</span>
<span class="line" id="L109"> <span class="tok-kw">if</span> (n.exponent <= info.max_exponent_fast_path) {</span>
<span class="line" id="L110"> <span class="tok-comment">// normal fast path</span>
</span>
<span class="line" id="L111"> value = <span class="tok-builtin">@as</span>(T, <span class="tok-builtin">@floatFromInt</span>(n.mantissa));</span>
<span class="line" id="L112"> value = <span class="tok-kw">if</span> (n.exponent < <span class="tok-number">0</span>)</span>
<span class="line" id="L113"> value / fastPow10(T, <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(-n.exponent)))</span>
<span class="line" id="L114"> <span class="tok-kw">else</span></span>
<span class="line" id="L115"> value * fastPow10(T, <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(n.exponent)));</span>
<span class="line" id="L116"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L117"> <span class="tok-comment">// disguised fast path</span>
</span>
<span class="line" id="L118"> <span class="tok-kw">const</span> shift = n.exponent - info.max_exponent_fast_path;</span>
<span class="line" id="L119"> <span class="tok-kw">const</span> mantissa = math.mul(MantissaT, n.mantissa, fastIntPow10(MantissaT, <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(shift)))) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L120"> <span class="tok-kw">if</span> (mantissa > info.max_mantissa_fast_path) {</span>
<span class="line" id="L121"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L122"> }</span>
<span class="line" id="L123"> value = <span class="tok-builtin">@as</span>(T, <span class="tok-builtin">@floatFromInt</span>(mantissa)) * fastPow10(T, info.max_exponent_fast_path);</span>
<span class="line" id="L124"> }</span>
<span class="line" id="L125"></span>
<span class="line" id="L126"> <span class="tok-kw">if</span> (n.negative) {</span>
<span class="line" id="L127"> value = -value;</span>
<span class="line" id="L128"> }</span>
<span class="line" id="L129"> <span class="tok-kw">return</span> value;</span>
<span class="line" id="L130">}</span>
<span class="line" id="L131"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/fmt | repos/yazap/docs/src/std/fmt/parse_float/FloatStream.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! A wrapper over a byte-slice, providing useful methods for parsing string floating point values.</span></span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L4"><span class="tok-kw">const</span> FloatStream = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L5"><span class="tok-kw">const</span> common = <span class="tok-builtin">@import</span>(<span class="tok-str">"common.zig"</span>);</span>
<span class="line" id="L6"></span>
<span class="line" id="L7">slice: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L8">offset: <span class="tok-type">usize</span>,</span>
<span class="line" id="L9">underscore_count: <span class="tok-type">usize</span>,</span>
<span class="line" id="L10"></span>
<span class="line" id="L11"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) FloatStream {</span>
<span class="line" id="L12"> <span class="tok-kw">return</span> .{ .slice = s, .offset = <span class="tok-number">0</span>, .underscore_count = <span class="tok-number">0</span> };</span>
<span class="line" id="L13">}</span>
<span class="line" id="L14"></span>
<span class="line" id="L15"><span class="tok-comment">// Returns the offset from the start *excluding* any underscores that were found.</span>
</span>
<span class="line" id="L16"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">offsetTrue</span>(self: FloatStream) <span class="tok-type">usize</span> {</span>
<span class="line" id="L17"> <span class="tok-kw">return</span> self.offset - self.underscore_count;</span>
<span class="line" id="L18">}</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reset</span>(self: *FloatStream) <span class="tok-type">void</span> {</span>
<span class="line" id="L21"> self.offset = <span class="tok-number">0</span>;</span>
<span class="line" id="L22"> self.underscore_count = <span class="tok-number">0</span>;</span>
<span class="line" id="L23">}</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">len</span>(self: FloatStream) <span class="tok-type">usize</span> {</span>
<span class="line" id="L26"> <span class="tok-kw">if</span> (self.offset > self.slice.len) {</span>
<span class="line" id="L27"> <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L28"> }</span>
<span class="line" id="L29"> <span class="tok-kw">return</span> self.slice.len - self.offset;</span>
<span class="line" id="L30">}</span>
<span class="line" id="L31"></span>
<span class="line" id="L32"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hasLen</span>(self: FloatStream, n: <span class="tok-type">usize</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L33"> <span class="tok-kw">return</span> self.offset + n <= self.slice.len;</span>
<span class="line" id="L34">}</span>
<span class="line" id="L35"></span>
<span class="line" id="L36"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">firstUnchecked</span>(self: FloatStream) <span class="tok-type">u8</span> {</span>
<span class="line" id="L37"> <span class="tok-kw">return</span> self.slice[self.offset];</span>
<span class="line" id="L38">}</span>
<span class="line" id="L39"></span>
<span class="line" id="L40"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">first</span>(self: FloatStream) ?<span class="tok-type">u8</span> {</span>
<span class="line" id="L41"> <span class="tok-kw">return</span> <span class="tok-kw">if</span> (self.hasLen(<span class="tok-number">1</span>))</span>
<span class="line" id="L42"> <span class="tok-kw">return</span> self.firstUnchecked()</span>
<span class="line" id="L43"> <span class="tok-kw">else</span></span>
<span class="line" id="L44"> <span class="tok-null">null</span>;</span>
<span class="line" id="L45">}</span>
<span class="line" id="L46"></span>
<span class="line" id="L47"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isEmpty</span>(self: FloatStream) <span class="tok-type">bool</span> {</span>
<span class="line" id="L48"> <span class="tok-kw">return</span> !self.hasLen(<span class="tok-number">1</span>);</span>
<span class="line" id="L49">}</span>
<span class="line" id="L50"></span>
<span class="line" id="L51"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">firstIs</span>(self: FloatStream, c: <span class="tok-type">u8</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L52"> <span class="tok-kw">if</span> (self.first()) |ok| {</span>
<span class="line" id="L53"> <span class="tok-kw">return</span> ok == c;</span>
<span class="line" id="L54"> }</span>
<span class="line" id="L55"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L56">}</span>
<span class="line" id="L57"></span>
<span class="line" id="L58"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">firstIsLower</span>(self: FloatStream, c: <span class="tok-type">u8</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L59"> <span class="tok-kw">if</span> (self.first()) |ok| {</span>
<span class="line" id="L60"> <span class="tok-kw">return</span> ok | <span class="tok-number">0x20</span> == c;</span>
<span class="line" id="L61"> }</span>
<span class="line" id="L62"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L63">}</span>
<span class="line" id="L64"></span>
<span class="line" id="L65"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">firstIs2</span>(self: FloatStream, c1: <span class="tok-type">u8</span>, c2: <span class="tok-type">u8</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L66"> <span class="tok-kw">if</span> (self.first()) |ok| {</span>
<span class="line" id="L67"> <span class="tok-kw">return</span> ok == c1 <span class="tok-kw">or</span> ok == c2;</span>
<span class="line" id="L68"> }</span>
<span class="line" id="L69"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L70">}</span>
<span class="line" id="L71"></span>
<span class="line" id="L72"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">firstIs3</span>(self: FloatStream, c1: <span class="tok-type">u8</span>, c2: <span class="tok-type">u8</span>, c3: <span class="tok-type">u8</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L73"> <span class="tok-kw">if</span> (self.first()) |ok| {</span>
<span class="line" id="L74"> <span class="tok-kw">return</span> ok == c1 <span class="tok-kw">or</span> ok == c2 <span class="tok-kw">or</span> ok == c3;</span>
<span class="line" id="L75"> }</span>
<span class="line" id="L76"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L77">}</span>
<span class="line" id="L78"></span>
<span class="line" id="L79"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">firstIsDigit</span>(self: FloatStream, <span class="tok-kw">comptime</span> base: <span class="tok-type">u8</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L80"> <span class="tok-kw">comptime</span> std.debug.assert(base == <span class="tok-number">10</span> <span class="tok-kw">or</span> base == <span class="tok-number">16</span>);</span>
<span class="line" id="L81"></span>
<span class="line" id="L82"> <span class="tok-kw">if</span> (self.first()) |ok| {</span>
<span class="line" id="L83"> <span class="tok-kw">return</span> common.isDigit(ok, base);</span>
<span class="line" id="L84"> }</span>
<span class="line" id="L85"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L86">}</span>
<span class="line" id="L87"></span>
<span class="line" id="L88"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">advance</span>(self: *FloatStream, n: <span class="tok-type">usize</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L89"> self.offset += n;</span>
<span class="line" id="L90">}</span>
<span class="line" id="L91"></span>
<span class="line" id="L92"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">skipChars</span>(self: *FloatStream, c: <span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L93"> <span class="tok-kw">while</span> (self.firstIs(c)) : (self.advance(<span class="tok-number">1</span>)) {}</span>
<span class="line" id="L94">}</span>
<span class="line" id="L95"></span>
<span class="line" id="L96"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">skipChars2</span>(self: *FloatStream, c1: <span class="tok-type">u8</span>, c2: <span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L97"> <span class="tok-kw">while</span> (self.firstIs2(c1, c2)) : (self.advance(<span class="tok-number">1</span>)) {}</span>
<span class="line" id="L98">}</span>
<span class="line" id="L99"></span>
<span class="line" id="L100"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">readU64Unchecked</span>(self: FloatStream) <span class="tok-type">u64</span> {</span>
<span class="line" id="L101"> <span class="tok-kw">return</span> std.mem.readIntSliceLittle(<span class="tok-type">u64</span>, self.slice[self.offset..]);</span>
<span class="line" id="L102">}</span>
<span class="line" id="L103"></span>
<span class="line" id="L104"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">readU64</span>(self: FloatStream) ?<span class="tok-type">u64</span> {</span>
<span class="line" id="L105"> <span class="tok-kw">if</span> (self.hasLen(<span class="tok-number">8</span>)) {</span>
<span class="line" id="L106"> <span class="tok-kw">return</span> self.readU64Unchecked();</span>
<span class="line" id="L107"> }</span>
<span class="line" id="L108"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L109">}</span>
<span class="line" id="L110"></span>
<span class="line" id="L111"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">atUnchecked</span>(self: *FloatStream, i: <span class="tok-type">usize</span>) <span class="tok-type">u8</span> {</span>
<span class="line" id="L112"> <span class="tok-kw">return</span> self.slice[self.offset + i];</span>
<span class="line" id="L113">}</span>
<span class="line" id="L114"></span>
<span class="line" id="L115"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">scanDigit</span>(self: *FloatStream, <span class="tok-kw">comptime</span> base: <span class="tok-type">u8</span>) ?<span class="tok-type">u8</span> {</span>
<span class="line" id="L116"> <span class="tok-kw">comptime</span> std.debug.assert(base == <span class="tok-number">10</span> <span class="tok-kw">or</span> base == <span class="tok-number">16</span>);</span>
<span class="line" id="L117"></span>
<span class="line" id="L118"> retry: <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L119"> <span class="tok-kw">if</span> (self.first()) |ok| {</span>
<span class="line" id="L120"> <span class="tok-kw">if</span> (<span class="tok-str">'0'</span> <= ok <span class="tok-kw">and</span> ok <= <span class="tok-str">'9'</span>) {</span>
<span class="line" id="L121"> self.advance(<span class="tok-number">1</span>);</span>
<span class="line" id="L122"> <span class="tok-kw">return</span> ok - <span class="tok-str">'0'</span>;</span>
<span class="line" id="L123"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (base == <span class="tok-number">16</span> <span class="tok-kw">and</span> <span class="tok-str">'a'</span> <= ok <span class="tok-kw">and</span> ok <= <span class="tok-str">'f'</span>) {</span>
<span class="line" id="L124"> self.advance(<span class="tok-number">1</span>);</span>
<span class="line" id="L125"> <span class="tok-kw">return</span> ok - <span class="tok-str">'a'</span> + <span class="tok-number">10</span>;</span>
<span class="line" id="L126"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (base == <span class="tok-number">16</span> <span class="tok-kw">and</span> <span class="tok-str">'A'</span> <= ok <span class="tok-kw">and</span> ok <= <span class="tok-str">'F'</span>) {</span>
<span class="line" id="L127"> self.advance(<span class="tok-number">1</span>);</span>
<span class="line" id="L128"> <span class="tok-kw">return</span> ok - <span class="tok-str">'A'</span> + <span class="tok-number">10</span>;</span>
<span class="line" id="L129"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (ok == <span class="tok-str">'_'</span>) {</span>
<span class="line" id="L130"> self.advance(<span class="tok-number">1</span>);</span>
<span class="line" id="L131"> self.underscore_count += <span class="tok-number">1</span>;</span>
<span class="line" id="L132"> <span class="tok-kw">continue</span> :retry;</span>
<span class="line" id="L133"> }</span>
<span class="line" id="L134"> }</span>
<span class="line" id="L135"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L136"> }</span>
<span class="line" id="L137">}</span>
<span class="line" id="L138"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/fmt | repos/yazap/docs/src/std/fmt/parse_float/decimal.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> common = <span class="tok-builtin">@import</span>(<span class="tok-str">"common.zig"</span>);</span>
<span class="line" id="L4"><span class="tok-kw">const</span> FloatStream = <span class="tok-builtin">@import</span>(<span class="tok-str">"FloatStream.zig"</span>);</span>
<span class="line" id="L5"><span class="tok-kw">const</span> isEightDigits = <span class="tok-builtin">@import</span>(<span class="tok-str">"common.zig"</span>).isEightDigits;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> mantissaType = common.mantissaType;</span>
<span class="line" id="L7"></span>
<span class="line" id="L8"><span class="tok-comment">// Arbitrary-precision decimal class for fallback algorithms.</span>
</span>
<span class="line" id="L9"><span class="tok-comment">//</span>
</span>
<span class="line" id="L10"><span class="tok-comment">// This is only used if the fast-path (native floats) and</span>
</span>
<span class="line" id="L11"><span class="tok-comment">// the Eisel-Lemire algorithm are unable to unambiguously</span>
</span>
<span class="line" id="L12"><span class="tok-comment">// determine the float.</span>
</span>
<span class="line" id="L13"><span class="tok-comment">//</span>
</span>
<span class="line" id="L14"><span class="tok-comment">// The technique used is "Simple Decimal Conversion", developed</span>
</span>
<span class="line" id="L15"><span class="tok-comment">// by Nigel Tao and Ken Thompson. A detailed description of the</span>
</span>
<span class="line" id="L16"><span class="tok-comment">// algorithm can be found in "ParseNumberF64 by Simple Decimal Conversion",</span>
</span>
<span class="line" id="L17"><span class="tok-comment">// available online: <https://nigeltao.github.io/blog/2020/parse-number-f64-simple.html>.</span>
</span>
<span class="line" id="L18"><span class="tok-comment">//</span>
</span>
<span class="line" id="L19"><span class="tok-comment">// Big-decimal implementation. We do not use the big.Int routines since we only require a maximum</span>
</span>
<span class="line" id="L20"><span class="tok-comment">// fixed region of memory. Further, we require only a small subset of operations.</span>
</span>
<span class="line" id="L21"><span class="tok-comment">//</span>
</span>
<span class="line" id="L22"><span class="tok-comment">// This accepts a floating point parameter and will generate a Decimal which can correctly parse</span>
</span>
<span class="line" id="L23"><span class="tok-comment">// the input with sufficient accuracy. Internally this means either a u64 mantissa (f16, f32 or f64)</span>
</span>
<span class="line" id="L24"><span class="tok-comment">// or a u128 mantissa (f128).</span>
</span>
<span class="line" id="L25"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">Decimal</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L26"> <span class="tok-kw">const</span> MantissaT = mantissaType(T);</span>
<span class="line" id="L27"> std.debug.assert(MantissaT == <span class="tok-type">u64</span> <span class="tok-kw">or</span> MantissaT == <span class="tok-type">u128</span>);</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L30"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L31"></span>
<span class="line" id="L32"> <span class="tok-comment">/// The maximum number of digits required to unambiguously round a float.</span></span>
<span class="line" id="L33"> <span class="tok-comment">///</span></span>
<span class="line" id="L34"> <span class="tok-comment">/// For a double-precision IEEE-754 float, this required 767 digits,</span></span>
<span class="line" id="L35"> <span class="tok-comment">/// so we store the max digits + 1.</span></span>
<span class="line" id="L36"> <span class="tok-comment">///</span></span>
<span class="line" id="L37"> <span class="tok-comment">/// We can exactly represent a float in base `b` from base 2 if</span></span>
<span class="line" id="L38"> <span class="tok-comment">/// `b` is divisible by 2. This function calculates the exact number of</span></span>
<span class="line" id="L39"> <span class="tok-comment">/// digits required to exactly represent that float.</span></span>
<span class="line" id="L40"> <span class="tok-comment">///</span></span>
<span class="line" id="L41"> <span class="tok-comment">/// According to the "Handbook of Floating Point Arithmetic",</span></span>
<span class="line" id="L42"> <span class="tok-comment">/// for IEEE754, with emin being the min exponent, p2 being the</span></span>
<span class="line" id="L43"> <span class="tok-comment">/// precision, and b being the base, the number of digits follows as:</span></span>
<span class="line" id="L44"> <span class="tok-comment">///</span></span>
<span class="line" id="L45"> <span class="tok-comment">/// `−emin + p2 + ⌊(emin + 1) log(2, b) − log(1 − 2^(−p2), b)⌋`</span></span>
<span class="line" id="L46"> <span class="tok-comment">///</span></span>
<span class="line" id="L47"> <span class="tok-comment">/// For f32, this follows as:</span></span>
<span class="line" id="L48"> <span class="tok-comment">/// emin = -126</span></span>
<span class="line" id="L49"> <span class="tok-comment">/// p2 = 24</span></span>
<span class="line" id="L50"> <span class="tok-comment">///</span></span>
<span class="line" id="L51"> <span class="tok-comment">/// For f64, this follows as:</span></span>
<span class="line" id="L52"> <span class="tok-comment">/// emin = -1022</span></span>
<span class="line" id="L53"> <span class="tok-comment">/// p2 = 53</span></span>
<span class="line" id="L54"> <span class="tok-comment">///</span></span>
<span class="line" id="L55"> <span class="tok-comment">/// For f128, this follows as:</span></span>
<span class="line" id="L56"> <span class="tok-comment">/// emin = -16383</span></span>
<span class="line" id="L57"> <span class="tok-comment">/// p2 = 112</span></span>
<span class="line" id="L58"> <span class="tok-comment">///</span></span>
<span class="line" id="L59"> <span class="tok-comment">/// In Python:</span></span>
<span class="line" id="L60"> <span class="tok-comment">/// `-emin + p2 + math.floor((emin+ 1)*math.log(2, b)-math.log(1-2**(-p2), b))`</span></span>
<span class="line" id="L61"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> max_digits = <span class="tok-kw">if</span> (MantissaT == <span class="tok-type">u64</span>) <span class="tok-number">768</span> <span class="tok-kw">else</span> <span class="tok-number">11564</span>;</span>
<span class="line" id="L62"> <span class="tok-comment">/// The max digits that can be exactly represented in a 64-bit integer.</span></span>
<span class="line" id="L63"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> max_digits_without_overflow = <span class="tok-kw">if</span> (MantissaT == <span class="tok-type">u64</span>) <span class="tok-number">19</span> <span class="tok-kw">else</span> <span class="tok-number">38</span>;</span>
<span class="line" id="L64"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> decimal_point_range = <span class="tok-kw">if</span> (MantissaT == <span class="tok-type">u64</span>) <span class="tok-number">2047</span> <span class="tok-kw">else</span> <span class="tok-number">32767</span>;</span>
<span class="line" id="L65"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> min_exponent = <span class="tok-kw">if</span> (MantissaT == <span class="tok-type">u64</span>) -<span class="tok-number">324</span> <span class="tok-kw">else</span> -<span class="tok-number">4966</span>;</span>
<span class="line" id="L66"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> max_exponent = <span class="tok-kw">if</span> (MantissaT == <span class="tok-type">u64</span>) <span class="tok-number">310</span> <span class="tok-kw">else</span> <span class="tok-number">4933</span>;</span>
<span class="line" id="L67"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> max_decimal_digits = <span class="tok-kw">if</span> (MantissaT == <span class="tok-type">u64</span>) <span class="tok-number">18</span> <span class="tok-kw">else</span> <span class="tok-number">37</span>;</span>
<span class="line" id="L68"></span>
<span class="line" id="L69"> <span class="tok-comment">/// The number of significant digits in the decimal.</span></span>
<span class="line" id="L70"> num_digits: <span class="tok-type">usize</span>,</span>
<span class="line" id="L71"> <span class="tok-comment">/// The offset of the decimal point in the significant digits.</span></span>
<span class="line" id="L72"> decimal_point: <span class="tok-type">i32</span>,</span>
<span class="line" id="L73"> <span class="tok-comment">/// If the number of significant digits stored in the decimal is truncated.</span></span>
<span class="line" id="L74"> truncated: <span class="tok-type">bool</span>,</span>
<span class="line" id="L75"> <span class="tok-comment">/// buffer of the raw digits, in the range [0, 9].</span></span>
<span class="line" id="L76"> digits: [max_digits]<span class="tok-type">u8</span>,</span>
<span class="line" id="L77"></span>
<span class="line" id="L78"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">new</span>() Self {</span>
<span class="line" id="L79"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L80"> .num_digits = <span class="tok-number">0</span>,</span>
<span class="line" id="L81"> .decimal_point = <span class="tok-number">0</span>,</span>
<span class="line" id="L82"> .truncated = <span class="tok-null">false</span>,</span>
<span class="line" id="L83"> .digits = [_]<span class="tok-type">u8</span>{<span class="tok-number">0</span>} ** max_digits,</span>
<span class="line" id="L84"> };</span>
<span class="line" id="L85"> }</span>
<span class="line" id="L86"></span>
<span class="line" id="L87"> <span class="tok-comment">/// Append a digit to the buffer</span></span>
<span class="line" id="L88"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">tryAddDigit</span>(self: *Self, digit: <span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L89"> <span class="tok-kw">if</span> (self.num_digits < max_digits) {</span>
<span class="line" id="L90"> self.digits[self.num_digits] = digit;</span>
<span class="line" id="L91"> }</span>
<span class="line" id="L92"> self.num_digits += <span class="tok-number">1</span>;</span>
<span class="line" id="L93"> }</span>
<span class="line" id="L94"></span>
<span class="line" id="L95"> <span class="tok-comment">/// Trim trailing zeroes from the buffer</span></span>
<span class="line" id="L96"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">trim</span>(self: *Self) <span class="tok-type">void</span> {</span>
<span class="line" id="L97"> <span class="tok-comment">// All of the following calls to `Self::trim` can't panic because:</span>
</span>
<span class="line" id="L98"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L99"> <span class="tok-comment">// 1. `parse_decimal` sets `num_digits` to a max of `max_digits`.</span>
</span>
<span class="line" id="L100"> <span class="tok-comment">// 2. `right_shift` sets `num_digits` to `write_index`, which is bounded by `num_digits`.</span>
</span>
<span class="line" id="L101"> <span class="tok-comment">// 3. `left_shift` `num_digits` to a max of `max_digits`.</span>
</span>
<span class="line" id="L102"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L103"> <span class="tok-comment">// Trim is only called in `right_shift` and `left_shift`.</span>
</span>
<span class="line" id="L104"> std.debug.assert(self.num_digits <= max_digits);</span>
<span class="line" id="L105"> <span class="tok-kw">while</span> (self.num_digits != <span class="tok-number">0</span> <span class="tok-kw">and</span> self.digits[self.num_digits - <span class="tok-number">1</span>] == <span class="tok-number">0</span>) {</span>
<span class="line" id="L106"> self.num_digits -= <span class="tok-number">1</span>;</span>
<span class="line" id="L107"> }</span>
<span class="line" id="L108"> }</span>
<span class="line" id="L109"></span>
<span class="line" id="L110"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">round</span>(self: *Self) MantissaT {</span>
<span class="line" id="L111"> <span class="tok-kw">if</span> (self.num_digits == <span class="tok-number">0</span> <span class="tok-kw">or</span> self.decimal_point < <span class="tok-number">0</span>) {</span>
<span class="line" id="L112"> <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L113"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (self.decimal_point > max_decimal_digits) {</span>
<span class="line" id="L114"> <span class="tok-kw">return</span> math.maxInt(MantissaT);</span>
<span class="line" id="L115"> }</span>
<span class="line" id="L116"></span>
<span class="line" id="L117"> <span class="tok-kw">const</span> dp = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(self.decimal_point));</span>
<span class="line" id="L118"> <span class="tok-kw">var</span> n: MantissaT = <span class="tok-number">0</span>;</span>
<span class="line" id="L119"></span>
<span class="line" id="L120"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L121"> <span class="tok-kw">while</span> (i < dp) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L122"> n *= <span class="tok-number">10</span>;</span>
<span class="line" id="L123"> <span class="tok-kw">if</span> (i < self.num_digits) {</span>
<span class="line" id="L124"> n += <span class="tok-builtin">@as</span>(MantissaT, self.digits[i]);</span>
<span class="line" id="L125"> }</span>
<span class="line" id="L126"> }</span>
<span class="line" id="L127"></span>
<span class="line" id="L128"> <span class="tok-kw">var</span> round_up = <span class="tok-null">false</span>;</span>
<span class="line" id="L129"> <span class="tok-kw">if</span> (dp < self.num_digits) {</span>
<span class="line" id="L130"> round_up = self.digits[dp] >= <span class="tok-number">5</span>;</span>
<span class="line" id="L131"> <span class="tok-kw">if</span> (self.digits[dp] == <span class="tok-number">5</span> <span class="tok-kw">and</span> dp + <span class="tok-number">1</span> == self.num_digits) {</span>
<span class="line" id="L132"> round_up = self.truncated <span class="tok-kw">or</span> ((dp != <span class="tok-number">0</span>) <span class="tok-kw">and</span> (<span class="tok-number">1</span> & self.digits[dp - <span class="tok-number">1</span>] != <span class="tok-number">0</span>));</span>
<span class="line" id="L133"> }</span>
<span class="line" id="L134"> }</span>
<span class="line" id="L135"> <span class="tok-kw">if</span> (round_up) {</span>
<span class="line" id="L136"> n += <span class="tok-number">1</span>;</span>
<span class="line" id="L137"> }</span>
<span class="line" id="L138"> <span class="tok-kw">return</span> n;</span>
<span class="line" id="L139"> }</span>
<span class="line" id="L140"></span>
<span class="line" id="L141"> <span class="tok-comment">/// Computes decimal * 2^shift.</span></span>
<span class="line" id="L142"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">leftShift</span>(self: *Self, shift: <span class="tok-type">usize</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L143"> <span class="tok-kw">if</span> (self.num_digits == <span class="tok-number">0</span>) {</span>
<span class="line" id="L144"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L145"> }</span>
<span class="line" id="L146"> <span class="tok-kw">const</span> num_new_digits = self.numberOfDigitsLeftShift(shift);</span>
<span class="line" id="L147"> <span class="tok-kw">var</span> read_index = self.num_digits;</span>
<span class="line" id="L148"> <span class="tok-kw">var</span> write_index = self.num_digits + num_new_digits;</span>
<span class="line" id="L149"> <span class="tok-kw">var</span> n: MantissaT = <span class="tok-number">0</span>;</span>
<span class="line" id="L150"> <span class="tok-kw">while</span> (read_index != <span class="tok-number">0</span>) {</span>
<span class="line" id="L151"> read_index -= <span class="tok-number">1</span>;</span>
<span class="line" id="L152"> write_index -= <span class="tok-number">1</span>;</span>
<span class="line" id="L153"> n += math.shl(MantissaT, self.digits[read_index], shift);</span>
<span class="line" id="L154"></span>
<span class="line" id="L155"> <span class="tok-kw">const</span> quotient = n / <span class="tok-number">10</span>;</span>
<span class="line" id="L156"> <span class="tok-kw">const</span> remainder = n - (<span class="tok-number">10</span> * quotient);</span>
<span class="line" id="L157"> <span class="tok-kw">if</span> (write_index < max_digits) {</span>
<span class="line" id="L158"> self.digits[write_index] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(remainder));</span>
<span class="line" id="L159"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (remainder > <span class="tok-number">0</span>) {</span>
<span class="line" id="L160"> self.truncated = <span class="tok-null">true</span>;</span>
<span class="line" id="L161"> }</span>
<span class="line" id="L162"> n = quotient;</span>
<span class="line" id="L163"> }</span>
<span class="line" id="L164"> <span class="tok-kw">while</span> (n > <span class="tok-number">0</span>) {</span>
<span class="line" id="L165"> write_index -= <span class="tok-number">1</span>;</span>
<span class="line" id="L166"></span>
<span class="line" id="L167"> <span class="tok-kw">const</span> quotient = n / <span class="tok-number">10</span>;</span>
<span class="line" id="L168"> <span class="tok-kw">const</span> remainder = n - (<span class="tok-number">10</span> * quotient);</span>
<span class="line" id="L169"> <span class="tok-kw">if</span> (write_index < max_digits) {</span>
<span class="line" id="L170"> self.digits[write_index] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(remainder));</span>
<span class="line" id="L171"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (remainder > <span class="tok-number">0</span>) {</span>
<span class="line" id="L172"> self.truncated = <span class="tok-null">true</span>;</span>
<span class="line" id="L173"> }</span>
<span class="line" id="L174"> n = quotient;</span>
<span class="line" id="L175"> }</span>
<span class="line" id="L176"></span>
<span class="line" id="L177"> self.num_digits += num_new_digits;</span>
<span class="line" id="L178"> <span class="tok-kw">if</span> (self.num_digits > max_digits) {</span>
<span class="line" id="L179"> self.num_digits = max_digits;</span>
<span class="line" id="L180"> }</span>
<span class="line" id="L181"> self.decimal_point += <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(num_new_digits));</span>
<span class="line" id="L182"> self.trim();</span>
<span class="line" id="L183"> }</span>
<span class="line" id="L184"></span>
<span class="line" id="L185"> <span class="tok-comment">/// Computes decimal * 2^-shift.</span></span>
<span class="line" id="L186"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">rightShift</span>(self: *Self, shift: <span class="tok-type">usize</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L187"> <span class="tok-kw">var</span> read_index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L188"> <span class="tok-kw">var</span> write_index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L189"> <span class="tok-kw">var</span> n: MantissaT = <span class="tok-number">0</span>;</span>
<span class="line" id="L190"> <span class="tok-kw">while</span> (math.shr(MantissaT, n, shift) == <span class="tok-number">0</span>) {</span>
<span class="line" id="L191"> <span class="tok-kw">if</span> (read_index < self.num_digits) {</span>
<span class="line" id="L192"> n = (<span class="tok-number">10</span> * n) + self.digits[read_index];</span>
<span class="line" id="L193"> read_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L194"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (n == <span class="tok-number">0</span>) {</span>
<span class="line" id="L195"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L196"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L197"> <span class="tok-kw">while</span> (math.shr(MantissaT, n, shift) == <span class="tok-number">0</span>) {</span>
<span class="line" id="L198"> n *= <span class="tok-number">10</span>;</span>
<span class="line" id="L199"> read_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L200"> }</span>
<span class="line" id="L201"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L202"> }</span>
<span class="line" id="L203"> }</span>
<span class="line" id="L204"></span>
<span class="line" id="L205"> self.decimal_point -= <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(read_index)) - <span class="tok-number">1</span>;</span>
<span class="line" id="L206"> <span class="tok-kw">if</span> (self.decimal_point < -decimal_point_range) {</span>
<span class="line" id="L207"> self.num_digits = <span class="tok-number">0</span>;</span>
<span class="line" id="L208"> self.decimal_point = <span class="tok-number">0</span>;</span>
<span class="line" id="L209"> self.truncated = <span class="tok-null">false</span>;</span>
<span class="line" id="L210"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L211"> }</span>
<span class="line" id="L212"></span>
<span class="line" id="L213"> <span class="tok-kw">const</span> mask = math.shl(MantissaT, <span class="tok-number">1</span>, shift) - <span class="tok-number">1</span>;</span>
<span class="line" id="L214"> <span class="tok-kw">while</span> (read_index < self.num_digits) {</span>
<span class="line" id="L215"> <span class="tok-kw">const</span> new_digit = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(math.shr(MantissaT, n, shift)));</span>
<span class="line" id="L216"> n = (<span class="tok-number">10</span> * (n & mask)) + self.digits[read_index];</span>
<span class="line" id="L217"> read_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L218"> self.digits[write_index] = new_digit;</span>
<span class="line" id="L219"> write_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L220"> }</span>
<span class="line" id="L221"> <span class="tok-kw">while</span> (n > <span class="tok-number">0</span>) {</span>
<span class="line" id="L222"> <span class="tok-kw">const</span> new_digit = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(math.shr(MantissaT, n, shift)));</span>
<span class="line" id="L223"> n = <span class="tok-number">10</span> * (n & mask);</span>
<span class="line" id="L224"> <span class="tok-kw">if</span> (write_index < max_digits) {</span>
<span class="line" id="L225"> self.digits[write_index] = new_digit;</span>
<span class="line" id="L226"> write_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L227"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (new_digit > <span class="tok-number">0</span>) {</span>
<span class="line" id="L228"> self.truncated = <span class="tok-null">true</span>;</span>
<span class="line" id="L229"> }</span>
<span class="line" id="L230"> }</span>
<span class="line" id="L231"> self.num_digits = write_index;</span>
<span class="line" id="L232"> self.trim();</span>
<span class="line" id="L233"> }</span>
<span class="line" id="L234"></span>
<span class="line" id="L235"> <span class="tok-comment">/// Parse a bit integer representation of the float as a decimal.</span></span>
<span class="line" id="L236"> <span class="tok-comment">// We do not verify underscores in this path since these will have been verified</span>
</span>
<span class="line" id="L237"> <span class="tok-comment">// via parse.parseNumber so can assume the number is well-formed.</span>
</span>
<span class="line" id="L238"> <span class="tok-comment">// This code-path does not have to handle hex-floats since these will always be handled via another</span>
</span>
<span class="line" id="L239"> <span class="tok-comment">// function prior to this.</span>
</span>
<span class="line" id="L240"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parse</span>(s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) Self {</span>
<span class="line" id="L241"> <span class="tok-kw">var</span> d = Self.new();</span>
<span class="line" id="L242"> <span class="tok-kw">var</span> stream = FloatStream.init(s);</span>
<span class="line" id="L243"></span>
<span class="line" id="L244"> stream.skipChars2(<span class="tok-str">'0'</span>, <span class="tok-str">'_'</span>);</span>
<span class="line" id="L245"> <span class="tok-kw">while</span> (stream.scanDigit(<span class="tok-number">10</span>)) |digit| {</span>
<span class="line" id="L246"> d.tryAddDigit(digit);</span>
<span class="line" id="L247"> }</span>
<span class="line" id="L248"></span>
<span class="line" id="L249"> <span class="tok-kw">if</span> (stream.firstIs(<span class="tok-str">'.'</span>)) {</span>
<span class="line" id="L250"> stream.advance(<span class="tok-number">1</span>);</span>
<span class="line" id="L251"> <span class="tok-kw">const</span> marker = stream.offsetTrue();</span>
<span class="line" id="L252"></span>
<span class="line" id="L253"> <span class="tok-comment">// Skip leading zeroes</span>
</span>
<span class="line" id="L254"> <span class="tok-kw">if</span> (d.num_digits == <span class="tok-number">0</span>) {</span>
<span class="line" id="L255"> stream.skipChars(<span class="tok-str">'0'</span>);</span>
<span class="line" id="L256"> }</span>
<span class="line" id="L257"></span>
<span class="line" id="L258"> <span class="tok-kw">while</span> (stream.hasLen(<span class="tok-number">8</span>) <span class="tok-kw">and</span> d.num_digits + <span class="tok-number">8</span> < max_digits) {</span>
<span class="line" id="L259"> <span class="tok-kw">const</span> v = stream.readU64Unchecked();</span>
<span class="line" id="L260"> <span class="tok-kw">if</span> (!isEightDigits(v)) {</span>
<span class="line" id="L261"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L262"> }</span>
<span class="line" id="L263"> std.mem.writeIntSliceLittle(<span class="tok-type">u64</span>, d.digits[d.num_digits..], v - <span class="tok-number">0x3030_3030_3030_3030</span>);</span>
<span class="line" id="L264"> d.num_digits += <span class="tok-number">8</span>;</span>
<span class="line" id="L265"> stream.advance(<span class="tok-number">8</span>);</span>
<span class="line" id="L266"> }</span>
<span class="line" id="L267"></span>
<span class="line" id="L268"> <span class="tok-kw">while</span> (stream.scanDigit(<span class="tok-number">10</span>)) |digit| {</span>
<span class="line" id="L269"> d.tryAddDigit(digit);</span>
<span class="line" id="L270"> }</span>
<span class="line" id="L271"> d.decimal_point = <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(marker)) - <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(stream.offsetTrue()));</span>
<span class="line" id="L272"> }</span>
<span class="line" id="L273"> <span class="tok-kw">if</span> (d.num_digits != <span class="tok-number">0</span>) {</span>
<span class="line" id="L274"> <span class="tok-comment">// Ignore trailing zeros if any</span>
</span>
<span class="line" id="L275"> <span class="tok-kw">var</span> n_trailing_zeros: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L276"> <span class="tok-kw">var</span> i = stream.offsetTrue() - <span class="tok-number">1</span>;</span>
<span class="line" id="L277"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L278"> <span class="tok-kw">if</span> (s[i] == <span class="tok-str">'0'</span>) {</span>
<span class="line" id="L279"> n_trailing_zeros += <span class="tok-number">1</span>;</span>
<span class="line" id="L280"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (s[i] != <span class="tok-str">'.'</span>) {</span>
<span class="line" id="L281"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L282"> }</span>
<span class="line" id="L283"></span>
<span class="line" id="L284"> i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L285"> <span class="tok-kw">if</span> (i == <span class="tok-number">0</span>) <span class="tok-kw">break</span>;</span>
<span class="line" id="L286"> }</span>
<span class="line" id="L287"> d.decimal_point += <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(n_trailing_zeros));</span>
<span class="line" id="L288"> d.num_digits -= n_trailing_zeros;</span>
<span class="line" id="L289"> d.decimal_point += <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(d.num_digits));</span>
<span class="line" id="L290"> <span class="tok-kw">if</span> (d.num_digits > max_digits) {</span>
<span class="line" id="L291"> d.truncated = <span class="tok-null">true</span>;</span>
<span class="line" id="L292"> d.num_digits = max_digits;</span>
<span class="line" id="L293"> }</span>
<span class="line" id="L294"> }</span>
<span class="line" id="L295"> <span class="tok-kw">if</span> (stream.firstIsLower(<span class="tok-str">'e'</span>)) {</span>
<span class="line" id="L296"> stream.advance(<span class="tok-number">1</span>);</span>
<span class="line" id="L297"> <span class="tok-kw">var</span> neg_exp = <span class="tok-null">false</span>;</span>
<span class="line" id="L298"> <span class="tok-kw">if</span> (stream.firstIs(<span class="tok-str">'-'</span>)) {</span>
<span class="line" id="L299"> neg_exp = <span class="tok-null">true</span>;</span>
<span class="line" id="L300"> stream.advance(<span class="tok-number">1</span>);</span>
<span class="line" id="L301"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (stream.firstIs(<span class="tok-str">'+'</span>)) {</span>
<span class="line" id="L302"> stream.advance(<span class="tok-number">1</span>);</span>
<span class="line" id="L303"> }</span>
<span class="line" id="L304"> <span class="tok-kw">var</span> exp_num: <span class="tok-type">i32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L305"> <span class="tok-kw">while</span> (stream.scanDigit(<span class="tok-number">10</span>)) |digit| {</span>
<span class="line" id="L306"> <span class="tok-kw">if</span> (exp_num < <span class="tok-number">0x10000</span>) {</span>
<span class="line" id="L307"> exp_num = <span class="tok-number">10</span> * exp_num + digit;</span>
<span class="line" id="L308"> }</span>
<span class="line" id="L309"> }</span>
<span class="line" id="L310"> d.decimal_point += <span class="tok-kw">if</span> (neg_exp) -exp_num <span class="tok-kw">else</span> exp_num;</span>
<span class="line" id="L311"> }</span>
<span class="line" id="L312"></span>
<span class="line" id="L313"> <span class="tok-kw">var</span> i = d.num_digits;</span>
<span class="line" id="L314"> <span class="tok-kw">while</span> (i < max_digits_without_overflow) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L315"> d.digits[i] = <span class="tok-number">0</span>;</span>
<span class="line" id="L316"> }</span>
<span class="line" id="L317"></span>
<span class="line" id="L318"> <span class="tok-kw">return</span> d;</span>
<span class="line" id="L319"> }</span>
<span class="line" id="L320"></span>
<span class="line" id="L321"> <span class="tok-comment">// Compute the number decimal digits introduced by a base-2 shift. This is performed</span>
</span>
<span class="line" id="L322"> <span class="tok-comment">// by storing the leading digits of 1/2^i = 5^i and using these along with the cut-off</span>
</span>
<span class="line" id="L323"> <span class="tok-comment">// value to quickly determine the decimal shift from binary.</span>
</span>
<span class="line" id="L324"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L325"> <span class="tok-comment">// See also https://github.com/golang/go/blob/go1.15.3/src/strconv/decimal.go#L163 for</span>
</span>
<span class="line" id="L326"> <span class="tok-comment">// another description of the method.</span>
</span>
<span class="line" id="L327"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">numberOfDigitsLeftShift</span>(self: *Self, shift: <span class="tok-type">usize</span>) <span class="tok-type">usize</span> {</span>
<span class="line" id="L328"> <span class="tok-kw">const</span> ShiftCutoff = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L329"> delta: <span class="tok-type">u8</span>,</span>
<span class="line" id="L330"> cutoff: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L331"> };</span>
<span class="line" id="L332"></span>
<span class="line" id="L333"> <span class="tok-comment">// Leading digits of 1/2^i = 5^i.</span>
</span>
<span class="line" id="L334"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L335"> <span class="tok-comment">// ```</span>
</span>
<span class="line" id="L336"> <span class="tok-comment">// import math</span>
</span>
<span class="line" id="L337"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L338"> <span class="tok-comment">// bits = 128</span>
</span>
<span class="line" id="L339"> <span class="tok-comment">// for i in range(bits):</span>
</span>
<span class="line" id="L340"> <span class="tok-comment">// log2 = math.log(2)/math.log(10)</span>
</span>
<span class="line" id="L341"> <span class="tok-comment">// print(f'.{{ .delta = {int(log2*i+1)}, .cutoff = "{5**i}" }}, // {2**i}')</span>
</span>
<span class="line" id="L342"> <span class="tok-comment">// ```</span>
</span>
<span class="line" id="L343"> <span class="tok-kw">const</span> pow2_to_pow5_table = [_]ShiftCutoff{</span>
<span class="line" id="L344"> .{ .delta = <span class="tok-number">0</span>, .cutoff = <span class="tok-str">""</span> },</span>
<span class="line" id="L345"> .{ .delta = <span class="tok-number">1</span>, .cutoff = <span class="tok-str">"5"</span> }, <span class="tok-comment">// 2</span>
</span>
<span class="line" id="L346"> .{ .delta = <span class="tok-number">1</span>, .cutoff = <span class="tok-str">"25"</span> }, <span class="tok-comment">// 4</span>
</span>
<span class="line" id="L347"> .{ .delta = <span class="tok-number">1</span>, .cutoff = <span class="tok-str">"125"</span> }, <span class="tok-comment">// 8</span>
</span>
<span class="line" id="L348"> .{ .delta = <span class="tok-number">2</span>, .cutoff = <span class="tok-str">"625"</span> }, <span class="tok-comment">// 16</span>
</span>
<span class="line" id="L349"> .{ .delta = <span class="tok-number">2</span>, .cutoff = <span class="tok-str">"3125"</span> }, <span class="tok-comment">// 32</span>
</span>
<span class="line" id="L350"> .{ .delta = <span class="tok-number">2</span>, .cutoff = <span class="tok-str">"15625"</span> }, <span class="tok-comment">// 64</span>
</span>
<span class="line" id="L351"> .{ .delta = <span class="tok-number">3</span>, .cutoff = <span class="tok-str">"78125"</span> }, <span class="tok-comment">// 128</span>
</span>
<span class="line" id="L352"> .{ .delta = <span class="tok-number">3</span>, .cutoff = <span class="tok-str">"390625"</span> }, <span class="tok-comment">// 256</span>
</span>
<span class="line" id="L353"> .{ .delta = <span class="tok-number">3</span>, .cutoff = <span class="tok-str">"1953125"</span> }, <span class="tok-comment">// 512</span>
</span>
<span class="line" id="L354"> .{ .delta = <span class="tok-number">4</span>, .cutoff = <span class="tok-str">"9765625"</span> }, <span class="tok-comment">// 1024</span>
</span>
<span class="line" id="L355"> .{ .delta = <span class="tok-number">4</span>, .cutoff = <span class="tok-str">"48828125"</span> }, <span class="tok-comment">// 2048</span>
</span>
<span class="line" id="L356"> .{ .delta = <span class="tok-number">4</span>, .cutoff = <span class="tok-str">"244140625"</span> }, <span class="tok-comment">// 4096</span>
</span>
<span class="line" id="L357"> .{ .delta = <span class="tok-number">4</span>, .cutoff = <span class="tok-str">"1220703125"</span> }, <span class="tok-comment">// 8192</span>
</span>
<span class="line" id="L358"> .{ .delta = <span class="tok-number">5</span>, .cutoff = <span class="tok-str">"6103515625"</span> }, <span class="tok-comment">// 16384</span>
</span>
<span class="line" id="L359"> .{ .delta = <span class="tok-number">5</span>, .cutoff = <span class="tok-str">"30517578125"</span> }, <span class="tok-comment">// 32768</span>
</span>
<span class="line" id="L360"> .{ .delta = <span class="tok-number">5</span>, .cutoff = <span class="tok-str">"152587890625"</span> }, <span class="tok-comment">// 65536</span>
</span>
<span class="line" id="L361"> .{ .delta = <span class="tok-number">6</span>, .cutoff = <span class="tok-str">"762939453125"</span> }, <span class="tok-comment">// 131072</span>
</span>
<span class="line" id="L362"> .{ .delta = <span class="tok-number">6</span>, .cutoff = <span class="tok-str">"3814697265625"</span> }, <span class="tok-comment">// 262144</span>
</span>
<span class="line" id="L363"> .{ .delta = <span class="tok-number">6</span>, .cutoff = <span class="tok-str">"19073486328125"</span> }, <span class="tok-comment">// 524288</span>
</span>
<span class="line" id="L364"> .{ .delta = <span class="tok-number">7</span>, .cutoff = <span class="tok-str">"95367431640625"</span> }, <span class="tok-comment">// 1048576</span>
</span>
<span class="line" id="L365"> .{ .delta = <span class="tok-number">7</span>, .cutoff = <span class="tok-str">"476837158203125"</span> }, <span class="tok-comment">// 2097152</span>
</span>
<span class="line" id="L366"> .{ .delta = <span class="tok-number">7</span>, .cutoff = <span class="tok-str">"2384185791015625"</span> }, <span class="tok-comment">// 4194304</span>
</span>
<span class="line" id="L367"> .{ .delta = <span class="tok-number">7</span>, .cutoff = <span class="tok-str">"11920928955078125"</span> }, <span class="tok-comment">// 8388608</span>
</span>
<span class="line" id="L368"> .{ .delta = <span class="tok-number">8</span>, .cutoff = <span class="tok-str">"59604644775390625"</span> }, <span class="tok-comment">// 16777216</span>
</span>
<span class="line" id="L369"> .{ .delta = <span class="tok-number">8</span>, .cutoff = <span class="tok-str">"298023223876953125"</span> }, <span class="tok-comment">// 33554432</span>
</span>
<span class="line" id="L370"> .{ .delta = <span class="tok-number">8</span>, .cutoff = <span class="tok-str">"1490116119384765625"</span> }, <span class="tok-comment">// 67108864</span>
</span>
<span class="line" id="L371"> .{ .delta = <span class="tok-number">9</span>, .cutoff = <span class="tok-str">"7450580596923828125"</span> }, <span class="tok-comment">// 134217728</span>
</span>
<span class="line" id="L372"> .{ .delta = <span class="tok-number">9</span>, .cutoff = <span class="tok-str">"37252902984619140625"</span> }, <span class="tok-comment">// 268435456</span>
</span>
<span class="line" id="L373"> .{ .delta = <span class="tok-number">9</span>, .cutoff = <span class="tok-str">"186264514923095703125"</span> }, <span class="tok-comment">// 536870912</span>
</span>
<span class="line" id="L374"> .{ .delta = <span class="tok-number">10</span>, .cutoff = <span class="tok-str">"931322574615478515625"</span> }, <span class="tok-comment">// 1073741824</span>
</span>
<span class="line" id="L375"> .{ .delta = <span class="tok-number">10</span>, .cutoff = <span class="tok-str">"4656612873077392578125"</span> }, <span class="tok-comment">// 2147483648</span>
</span>
<span class="line" id="L376"> .{ .delta = <span class="tok-number">10</span>, .cutoff = <span class="tok-str">"23283064365386962890625"</span> }, <span class="tok-comment">// 4294967296</span>
</span>
<span class="line" id="L377"> .{ .delta = <span class="tok-number">10</span>, .cutoff = <span class="tok-str">"116415321826934814453125"</span> }, <span class="tok-comment">// 8589934592</span>
</span>
<span class="line" id="L378"> .{ .delta = <span class="tok-number">11</span>, .cutoff = <span class="tok-str">"582076609134674072265625"</span> }, <span class="tok-comment">// 17179869184</span>
</span>
<span class="line" id="L379"> .{ .delta = <span class="tok-number">11</span>, .cutoff = <span class="tok-str">"2910383045673370361328125"</span> }, <span class="tok-comment">// 34359738368</span>
</span>
<span class="line" id="L380"> .{ .delta = <span class="tok-number">11</span>, .cutoff = <span class="tok-str">"14551915228366851806640625"</span> }, <span class="tok-comment">// 68719476736</span>
</span>
<span class="line" id="L381"> .{ .delta = <span class="tok-number">12</span>, .cutoff = <span class="tok-str">"72759576141834259033203125"</span> }, <span class="tok-comment">// 137438953472</span>
</span>
<span class="line" id="L382"> .{ .delta = <span class="tok-number">12</span>, .cutoff = <span class="tok-str">"363797880709171295166015625"</span> }, <span class="tok-comment">// 274877906944</span>
</span>
<span class="line" id="L383"> .{ .delta = <span class="tok-number">12</span>, .cutoff = <span class="tok-str">"1818989403545856475830078125"</span> }, <span class="tok-comment">// 549755813888</span>
</span>
<span class="line" id="L384"> .{ .delta = <span class="tok-number">13</span>, .cutoff = <span class="tok-str">"9094947017729282379150390625"</span> }, <span class="tok-comment">// 1099511627776</span>
</span>
<span class="line" id="L385"> .{ .delta = <span class="tok-number">13</span>, .cutoff = <span class="tok-str">"45474735088646411895751953125"</span> }, <span class="tok-comment">// 2199023255552</span>
</span>
<span class="line" id="L386"> .{ .delta = <span class="tok-number">13</span>, .cutoff = <span class="tok-str">"227373675443232059478759765625"</span> }, <span class="tok-comment">// 4398046511104</span>
</span>
<span class="line" id="L387"> .{ .delta = <span class="tok-number">13</span>, .cutoff = <span class="tok-str">"1136868377216160297393798828125"</span> }, <span class="tok-comment">// 8796093022208</span>
</span>
<span class="line" id="L388"> .{ .delta = <span class="tok-number">14</span>, .cutoff = <span class="tok-str">"5684341886080801486968994140625"</span> }, <span class="tok-comment">// 17592186044416</span>
</span>
<span class="line" id="L389"> .{ .delta = <span class="tok-number">14</span>, .cutoff = <span class="tok-str">"28421709430404007434844970703125"</span> }, <span class="tok-comment">// 35184372088832</span>
</span>
<span class="line" id="L390"> .{ .delta = <span class="tok-number">14</span>, .cutoff = <span class="tok-str">"142108547152020037174224853515625"</span> }, <span class="tok-comment">// 70368744177664</span>
</span>
<span class="line" id="L391"> .{ .delta = <span class="tok-number">15</span>, .cutoff = <span class="tok-str">"710542735760100185871124267578125"</span> }, <span class="tok-comment">// 140737488355328</span>
</span>
<span class="line" id="L392"> .{ .delta = <span class="tok-number">15</span>, .cutoff = <span class="tok-str">"3552713678800500929355621337890625"</span> }, <span class="tok-comment">// 281474976710656</span>
</span>
<span class="line" id="L393"> .{ .delta = <span class="tok-number">15</span>, .cutoff = <span class="tok-str">"17763568394002504646778106689453125"</span> }, <span class="tok-comment">// 562949953421312</span>
</span>
<span class="line" id="L394"> .{ .delta = <span class="tok-number">16</span>, .cutoff = <span class="tok-str">"88817841970012523233890533447265625"</span> }, <span class="tok-comment">// 1125899906842624</span>
</span>
<span class="line" id="L395"> .{ .delta = <span class="tok-number">16</span>, .cutoff = <span class="tok-str">"444089209850062616169452667236328125"</span> }, <span class="tok-comment">// 2251799813685248</span>
</span>
<span class="line" id="L396"> .{ .delta = <span class="tok-number">16</span>, .cutoff = <span class="tok-str">"2220446049250313080847263336181640625"</span> }, <span class="tok-comment">// 4503599627370496</span>
</span>
<span class="line" id="L397"> .{ .delta = <span class="tok-number">16</span>, .cutoff = <span class="tok-str">"11102230246251565404236316680908203125"</span> }, <span class="tok-comment">// 9007199254740992</span>
</span>
<span class="line" id="L398"> .{ .delta = <span class="tok-number">17</span>, .cutoff = <span class="tok-str">"55511151231257827021181583404541015625"</span> }, <span class="tok-comment">// 18014398509481984</span>
</span>
<span class="line" id="L399"> .{ .delta = <span class="tok-number">17</span>, .cutoff = <span class="tok-str">"277555756156289135105907917022705078125"</span> }, <span class="tok-comment">// 36028797018963968</span>
</span>
<span class="line" id="L400"> .{ .delta = <span class="tok-number">17</span>, .cutoff = <span class="tok-str">"1387778780781445675529539585113525390625"</span> }, <span class="tok-comment">// 72057594037927936</span>
</span>
<span class="line" id="L401"> .{ .delta = <span class="tok-number">18</span>, .cutoff = <span class="tok-str">"6938893903907228377647697925567626953125"</span> }, <span class="tok-comment">// 144115188075855872</span>
</span>
<span class="line" id="L402"> .{ .delta = <span class="tok-number">18</span>, .cutoff = <span class="tok-str">"34694469519536141888238489627838134765625"</span> }, <span class="tok-comment">// 288230376151711744</span>
</span>
<span class="line" id="L403"> .{ .delta = <span class="tok-number">18</span>, .cutoff = <span class="tok-str">"173472347597680709441192448139190673828125"</span> }, <span class="tok-comment">// 576460752303423488</span>
</span>
<span class="line" id="L404"> .{ .delta = <span class="tok-number">19</span>, .cutoff = <span class="tok-str">"867361737988403547205962240695953369140625"</span> }, <span class="tok-comment">// 1152921504606846976</span>
</span>
<span class="line" id="L405"> .{ .delta = <span class="tok-number">19</span>, .cutoff = <span class="tok-str">"4336808689942017736029811203479766845703125"</span> }, <span class="tok-comment">// 2305843009213693952</span>
</span>
<span class="line" id="L406"> .{ .delta = <span class="tok-number">19</span>, .cutoff = <span class="tok-str">"21684043449710088680149056017398834228515625"</span> }, <span class="tok-comment">// 4611686018427387904</span>
</span>
<span class="line" id="L407"> .{ .delta = <span class="tok-number">19</span>, .cutoff = <span class="tok-str">"108420217248550443400745280086994171142578125"</span> }, <span class="tok-comment">// 9223372036854775808</span>
</span>
<span class="line" id="L408"> .{ .delta = <span class="tok-number">20</span>, .cutoff = <span class="tok-str">"542101086242752217003726400434970855712890625"</span> }, <span class="tok-comment">// 18446744073709551616</span>
</span>
<span class="line" id="L409"> .{ .delta = <span class="tok-number">20</span>, .cutoff = <span class="tok-str">"2710505431213761085018632002174854278564453125"</span> }, <span class="tok-comment">// 36893488147419103232</span>
</span>
<span class="line" id="L410"> .{ .delta = <span class="tok-number">20</span>, .cutoff = <span class="tok-str">"13552527156068805425093160010874271392822265625"</span> }, <span class="tok-comment">// 73786976294838206464</span>
</span>
<span class="line" id="L411"> .{ .delta = <span class="tok-number">21</span>, .cutoff = <span class="tok-str">"67762635780344027125465800054371356964111328125"</span> }, <span class="tok-comment">// 147573952589676412928</span>
</span>
<span class="line" id="L412"> .{ .delta = <span class="tok-number">21</span>, .cutoff = <span class="tok-str">"338813178901720135627329000271856784820556640625"</span> }, <span class="tok-comment">// 295147905179352825856</span>
</span>
<span class="line" id="L413"> .{ .delta = <span class="tok-number">21</span>, .cutoff = <span class="tok-str">"1694065894508600678136645001359283924102783203125"</span> }, <span class="tok-comment">// 590295810358705651712</span>
</span>
<span class="line" id="L414"> .{ .delta = <span class="tok-number">22</span>, .cutoff = <span class="tok-str">"8470329472543003390683225006796419620513916015625"</span> }, <span class="tok-comment">// 1180591620717411303424</span>
</span>
<span class="line" id="L415"> .{ .delta = <span class="tok-number">22</span>, .cutoff = <span class="tok-str">"42351647362715016953416125033982098102569580078125"</span> }, <span class="tok-comment">// 2361183241434822606848</span>
</span>
<span class="line" id="L416"> .{ .delta = <span class="tok-number">22</span>, .cutoff = <span class="tok-str">"211758236813575084767080625169910490512847900390625"</span> }, <span class="tok-comment">// 4722366482869645213696</span>
</span>
<span class="line" id="L417"> .{ .delta = <span class="tok-number">22</span>, .cutoff = <span class="tok-str">"1058791184067875423835403125849552452564239501953125"</span> }, <span class="tok-comment">// 9444732965739290427392</span>
</span>
<span class="line" id="L418"> .{ .delta = <span class="tok-number">23</span>, .cutoff = <span class="tok-str">"5293955920339377119177015629247762262821197509765625"</span> }, <span class="tok-comment">// 18889465931478580854784</span>
</span>
<span class="line" id="L419"> .{ .delta = <span class="tok-number">23</span>, .cutoff = <span class="tok-str">"26469779601696885595885078146238811314105987548828125"</span> }, <span class="tok-comment">// 37778931862957161709568</span>
</span>
<span class="line" id="L420"> .{ .delta = <span class="tok-number">23</span>, .cutoff = <span class="tok-str">"132348898008484427979425390731194056570529937744140625"</span> }, <span class="tok-comment">// 75557863725914323419136</span>
</span>
<span class="line" id="L421"> .{ .delta = <span class="tok-number">24</span>, .cutoff = <span class="tok-str">"661744490042422139897126953655970282852649688720703125"</span> }, <span class="tok-comment">// 151115727451828646838272</span>
</span>
<span class="line" id="L422"> .{ .delta = <span class="tok-number">24</span>, .cutoff = <span class="tok-str">"3308722450212110699485634768279851414263248443603515625"</span> }, <span class="tok-comment">// 302231454903657293676544</span>
</span>
<span class="line" id="L423"> .{ .delta = <span class="tok-number">24</span>, .cutoff = <span class="tok-str">"16543612251060553497428173841399257071316242218017578125"</span> }, <span class="tok-comment">// 604462909807314587353088</span>
</span>
<span class="line" id="L424"> .{ .delta = <span class="tok-number">25</span>, .cutoff = <span class="tok-str">"82718061255302767487140869206996285356581211090087890625"</span> }, <span class="tok-comment">// 1208925819614629174706176</span>
</span>
<span class="line" id="L425"> .{ .delta = <span class="tok-number">25</span>, .cutoff = <span class="tok-str">"413590306276513837435704346034981426782906055450439453125"</span> }, <span class="tok-comment">// 2417851639229258349412352</span>
</span>
<span class="line" id="L426"> .{ .delta = <span class="tok-number">25</span>, .cutoff = <span class="tok-str">"2067951531382569187178521730174907133914530277252197265625"</span> }, <span class="tok-comment">// 4835703278458516698824704</span>
</span>
<span class="line" id="L427"> .{ .delta = <span class="tok-number">25</span>, .cutoff = <span class="tok-str">"10339757656912845935892608650874535669572651386260986328125"</span> }, <span class="tok-comment">// 9671406556917033397649408</span>
</span>
<span class="line" id="L428"> .{ .delta = <span class="tok-number">26</span>, .cutoff = <span class="tok-str">"51698788284564229679463043254372678347863256931304931640625"</span> }, <span class="tok-comment">// 19342813113834066795298816</span>
</span>
<span class="line" id="L429"> .{ .delta = <span class="tok-number">26</span>, .cutoff = <span class="tok-str">"258493941422821148397315216271863391739316284656524658203125"</span> }, <span class="tok-comment">// 38685626227668133590597632</span>
</span>
<span class="line" id="L430"> .{ .delta = <span class="tok-number">26</span>, .cutoff = <span class="tok-str">"1292469707114105741986576081359316958696581423282623291015625"</span> }, <span class="tok-comment">// 77371252455336267181195264</span>
</span>
<span class="line" id="L431"> .{ .delta = <span class="tok-number">27</span>, .cutoff = <span class="tok-str">"6462348535570528709932880406796584793482907116413116455078125"</span> }, <span class="tok-comment">// 154742504910672534362390528</span>
</span>
<span class="line" id="L432"> .{ .delta = <span class="tok-number">27</span>, .cutoff = <span class="tok-str">"32311742677852643549664402033982923967414535582065582275390625"</span> }, <span class="tok-comment">// 309485009821345068724781056</span>
</span>
<span class="line" id="L433"> .{ .delta = <span class="tok-number">27</span>, .cutoff = <span class="tok-str">"161558713389263217748322010169914619837072677910327911376953125"</span> }, <span class="tok-comment">// 618970019642690137449562112</span>
</span>
<span class="line" id="L434"> .{ .delta = <span class="tok-number">28</span>, .cutoff = <span class="tok-str">"807793566946316088741610050849573099185363389551639556884765625"</span> }, <span class="tok-comment">// 1237940039285380274899124224</span>
</span>
<span class="line" id="L435"> .{ .delta = <span class="tok-number">28</span>, .cutoff = <span class="tok-str">"4038967834731580443708050254247865495926816947758197784423828125"</span> }, <span class="tok-comment">// 2475880078570760549798248448</span>
</span>
<span class="line" id="L436"> .{ .delta = <span class="tok-number">28</span>, .cutoff = <span class="tok-str">"20194839173657902218540251271239327479634084738790988922119140625"</span> }, <span class="tok-comment">// 4951760157141521099596496896</span>
</span>
<span class="line" id="L437"> .{ .delta = <span class="tok-number">28</span>, .cutoff = <span class="tok-str">"100974195868289511092701256356196637398170423693954944610595703125"</span> }, <span class="tok-comment">// 9903520314283042199192993792</span>
</span>
<span class="line" id="L438"> .{ .delta = <span class="tok-number">29</span>, .cutoff = <span class="tok-str">"504870979341447555463506281780983186990852118469774723052978515625"</span> }, <span class="tok-comment">// 19807040628566084398385987584</span>
</span>
<span class="line" id="L439"> .{ .delta = <span class="tok-number">29</span>, .cutoff = <span class="tok-str">"2524354896707237777317531408904915934954260592348873615264892578125"</span> }, <span class="tok-comment">// 39614081257132168796771975168</span>
</span>
<span class="line" id="L440"> .{ .delta = <span class="tok-number">29</span>, .cutoff = <span class="tok-str">"12621774483536188886587657044524579674771302961744368076324462890625"</span> }, <span class="tok-comment">// 79228162514264337593543950336</span>
</span>
<span class="line" id="L441"> .{ .delta = <span class="tok-number">30</span>, .cutoff = <span class="tok-str">"63108872417680944432938285222622898373856514808721840381622314453125"</span> }, <span class="tok-comment">// 158456325028528675187087900672</span>
</span>
<span class="line" id="L442"> .{ .delta = <span class="tok-number">30</span>, .cutoff = <span class="tok-str">"315544362088404722164691426113114491869282574043609201908111572265625"</span> }, <span class="tok-comment">// 316912650057057350374175801344</span>
</span>
<span class="line" id="L443"> .{ .delta = <span class="tok-number">30</span>, .cutoff = <span class="tok-str">"1577721810442023610823457130565572459346412870218046009540557861328125"</span> }, <span class="tok-comment">// 633825300114114700748351602688</span>
</span>
<span class="line" id="L444"> .{ .delta = <span class="tok-number">31</span>, .cutoff = <span class="tok-str">"7888609052210118054117285652827862296732064351090230047702789306640625"</span> }, <span class="tok-comment">// 1267650600228229401496703205376</span>
</span>
<span class="line" id="L445"> .{ .delta = <span class="tok-number">31</span>, .cutoff = <span class="tok-str">"39443045261050590270586428264139311483660321755451150238513946533203125"</span> }, <span class="tok-comment">// 2535301200456458802993406410752</span>
</span>
<span class="line" id="L446"> .{ .delta = <span class="tok-number">31</span>, .cutoff = <span class="tok-str">"197215226305252951352932141320696557418301608777255751192569732666015625"</span> }, <span class="tok-comment">// 5070602400912917605986812821504</span>
</span>
<span class="line" id="L447"> .{ .delta = <span class="tok-number">32</span>, .cutoff = <span class="tok-str">"986076131526264756764660706603482787091508043886278755962848663330078125"</span> }, <span class="tok-comment">// 10141204801825835211973625643008</span>
</span>
<span class="line" id="L448"> .{ .delta = <span class="tok-number">32</span>, .cutoff = <span class="tok-str">"4930380657631323783823303533017413935457540219431393779814243316650390625"</span> }, <span class="tok-comment">// 20282409603651670423947251286016</span>
</span>
<span class="line" id="L449"> .{ .delta = <span class="tok-number">32</span>, .cutoff = <span class="tok-str">"24651903288156618919116517665087069677287701097156968899071216583251953125"</span> }, <span class="tok-comment">// 40564819207303340847894502572032</span>
</span>
<span class="line" id="L450"> .{ .delta = <span class="tok-number">32</span>, .cutoff = <span class="tok-str">"123259516440783094595582588325435348386438505485784844495356082916259765625"</span> }, <span class="tok-comment">// 81129638414606681695789005144064</span>
</span>
<span class="line" id="L451"> .{ .delta = <span class="tok-number">33</span>, .cutoff = <span class="tok-str">"616297582203915472977912941627176741932192527428924222476780414581298828125"</span> }, <span class="tok-comment">// 162259276829213363391578010288128</span>
</span>
<span class="line" id="L452"> .{ .delta = <span class="tok-number">33</span>, .cutoff = <span class="tok-str">"3081487911019577364889564708135883709660962637144621112383902072906494140625"</span> }, <span class="tok-comment">// 324518553658426726783156020576256</span>
</span>
<span class="line" id="L453"> .{ .delta = <span class="tok-number">33</span>, .cutoff = <span class="tok-str">"15407439555097886824447823540679418548304813185723105561919510364532470703125"</span> }, <span class="tok-comment">// 649037107316853453566312041152512</span>
</span>
<span class="line" id="L454"> .{ .delta = <span class="tok-number">34</span>, .cutoff = <span class="tok-str">"77037197775489434122239117703397092741524065928615527809597551822662353515625"</span> }, <span class="tok-comment">// 1298074214633706907132624082305024</span>
</span>
<span class="line" id="L455"> .{ .delta = <span class="tok-number">34</span>, .cutoff = <span class="tok-str">"385185988877447170611195588516985463707620329643077639047987759113311767578125"</span> }, <span class="tok-comment">// 2596148429267413814265248164610048</span>
</span>
<span class="line" id="L456"> .{ .delta = <span class="tok-number">34</span>, .cutoff = <span class="tok-str">"1925929944387235853055977942584927318538101648215388195239938795566558837890625"</span> }, <span class="tok-comment">// 5192296858534827628530496329220096</span>
</span>
<span class="line" id="L457"> .{ .delta = <span class="tok-number">35</span>, .cutoff = <span class="tok-str">"9629649721936179265279889712924636592690508241076940976199693977832794189453125"</span> }, <span class="tok-comment">// 10384593717069655257060992658440192</span>
</span>
<span class="line" id="L458"> .{ .delta = <span class="tok-number">35</span>, .cutoff = <span class="tok-str">"48148248609680896326399448564623182963452541205384704880998469889163970947265625"</span> }, <span class="tok-comment">// 20769187434139310514121985316880384</span>
</span>
<span class="line" id="L459"> .{ .delta = <span class="tok-number">35</span>, .cutoff = <span class="tok-str">"240741243048404481631997242823115914817262706026923524404992349445819854736328125"</span> }, <span class="tok-comment">// 41538374868278621028243970633760768</span>
</span>
<span class="line" id="L460"> .{ .delta = <span class="tok-number">35</span>, .cutoff = <span class="tok-str">"1203706215242022408159986214115579574086313530134617622024961747229099273681640625"</span> }, <span class="tok-comment">// 83076749736557242056487941267521536</span>
</span>
<span class="line" id="L461"> .{ .delta = <span class="tok-number">36</span>, .cutoff = <span class="tok-str">"6018531076210112040799931070577897870431567650673088110124808736145496368408203125"</span> }, <span class="tok-comment">// 166153499473114484112975882535043072</span>
</span>
<span class="line" id="L462"> .{ .delta = <span class="tok-number">36</span>, .cutoff = <span class="tok-str">"30092655381050560203999655352889489352157838253365440550624043680727481842041015625"</span> }, <span class="tok-comment">// 332306998946228968225951765070086144</span>
</span>
<span class="line" id="L463"> .{ .delta = <span class="tok-number">36</span>, .cutoff = <span class="tok-str">"150463276905252801019998276764447446760789191266827202753120218403637409210205078125"</span> }, <span class="tok-comment">// 664613997892457936451903530140172288</span>
</span>
<span class="line" id="L464"> .{ .delta = <span class="tok-number">37</span>, .cutoff = <span class="tok-str">"752316384526264005099991383822237233803945956334136013765601092018187046051025390625"</span> }, <span class="tok-comment">// 1329227995784915872903807060280344576</span>
</span>
<span class="line" id="L465"> .{ .delta = <span class="tok-number">37</span>, .cutoff = <span class="tok-str">"3761581922631320025499956919111186169019729781670680068828005460090935230255126953125"</span> }, <span class="tok-comment">// 2658455991569831745807614120560689152</span>
</span>
<span class="line" id="L466"> .{ .delta = <span class="tok-number">37</span>, .cutoff = <span class="tok-str">"18807909613156600127499784595555930845098648908353400344140027300454676151275634765625"</span> }, <span class="tok-comment">// 5316911983139663491615228241121378304</span>
</span>
<span class="line" id="L467"> .{ .delta = <span class="tok-number">38</span>, .cutoff = <span class="tok-str">"94039548065783000637498922977779654225493244541767001720700136502273380756378173828125"</span> }, <span class="tok-comment">// 10633823966279326983230456482242756608</span>
</span>
<span class="line" id="L468"> .{ .delta = <span class="tok-number">38</span>, .cutoff = <span class="tok-str">"470197740328915003187494614888898271127466222708835008603500682511366903781890869140625"</span> }, <span class="tok-comment">// 21267647932558653966460912964485513216</span>
</span>
<span class="line" id="L469"> .{ .delta = <span class="tok-number">38</span>, .cutoff = <span class="tok-str">"2350988701644575015937473074444491355637331113544175043017503412556834518909454345703125"</span> }, <span class="tok-comment">// 42535295865117307932921825928971026432</span>
</span>
<span class="line" id="L470"> .{ .delta = <span class="tok-number">38</span>, .cutoff = <span class="tok-str">"11754943508222875079687365372222456778186655567720875215087517062784172594547271728515625"</span> }, <span class="tok-comment">// 85070591730234615865843651857942052864</span>
</span>
<span class="line" id="L471"> .{ .delta = <span class="tok-number">39</span>, .cutoff = <span class="tok-str">"58774717541114375398436826861112283890933277838604376075437585313920862972736358642578125"</span> }, <span class="tok-comment">// 170141183460469231731687303715884105728</span>
</span>
<span class="line" id="L472"> };</span>
<span class="line" id="L473"></span>
<span class="line" id="L474"> std.debug.assert(shift < pow2_to_pow5_table.len);</span>
<span class="line" id="L475"> <span class="tok-kw">const</span> x = pow2_to_pow5_table[shift];</span>
<span class="line" id="L476"></span>
<span class="line" id="L477"> <span class="tok-comment">// Compare leading digits of current to check if lexicographically less than cutoff.</span>
</span>
<span class="line" id="L478"> <span class="tok-kw">for</span> (x.cutoff, <span class="tok-number">0</span>..) |p5, i| {</span>
<span class="line" id="L479"> <span class="tok-kw">if</span> (i >= self.num_digits) {</span>
<span class="line" id="L480"> <span class="tok-kw">return</span> x.delta - <span class="tok-number">1</span>;</span>
<span class="line" id="L481"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (self.digits[i] == p5 - <span class="tok-str">'0'</span>) { <span class="tok-comment">// digits are stored as integers</span>
</span>
<span class="line" id="L482"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L483"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (self.digits[i] < p5 - <span class="tok-str">'0'</span>) {</span>
<span class="line" id="L484"> <span class="tok-kw">return</span> x.delta - <span class="tok-number">1</span>;</span>
<span class="line" id="L485"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L486"> <span class="tok-kw">return</span> x.delta;</span>
<span class="line" id="L487"> }</span>
<span class="line" id="L488"> <span class="tok-kw">return</span> x.delta;</span>
<span class="line" id="L489"> }</span>
<span class="line" id="L490"> <span class="tok-kw">return</span> x.delta;</span>
<span class="line" id="L491"> }</span>
<span class="line" id="L492"> };</span>
<span class="line" id="L493">}</span>
<span class="line" id="L494"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/fmt | repos/yazap/docs/src/std/fmt/parse_float/parse.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> common = <span class="tok-builtin">@import</span>(<span class="tok-str">"common.zig"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> FloatStream = <span class="tok-builtin">@import</span>(<span class="tok-str">"FloatStream.zig"</span>);</span>
<span class="line" id="L4"><span class="tok-kw">const</span> isEightDigits = common.isEightDigits;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> Number = common.Number;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-comment">/// Parse 8 digits, loaded as bytes in little-endian order.</span></span>
<span class="line" id="L8"><span class="tok-comment">///</span></span>
<span class="line" id="L9"><span class="tok-comment">/// This uses the trick where every digit is in [0x030, 0x39],</span></span>
<span class="line" id="L10"><span class="tok-comment">/// and therefore can be parsed in 3 multiplications, much</span></span>
<span class="line" id="L11"><span class="tok-comment">/// faster than the normal 8.</span></span>
<span class="line" id="L12"><span class="tok-comment">///</span></span>
<span class="line" id="L13"><span class="tok-comment">/// This is based off the algorithm described in "Fast numeric string to</span></span>
<span class="line" id="L14"><span class="tok-comment">/// int", available here: <https://johnnylee-sde.github.io/Fast-numeric-string-to-int/>.</span></span>
<span class="line" id="L15"><span class="tok-kw">fn</span> <span class="tok-fn">parse8Digits</span>(v_: <span class="tok-type">u64</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L16"> <span class="tok-kw">var</span> v = v_;</span>
<span class="line" id="L17"> <span class="tok-kw">const</span> mask = <span class="tok-number">0x0000_00ff_0000_00ff</span>;</span>
<span class="line" id="L18"> <span class="tok-kw">const</span> mul1 = <span class="tok-number">0x000f_4240_0000_0064</span>;</span>
<span class="line" id="L19"> <span class="tok-kw">const</span> mul2 = <span class="tok-number">0x0000_2710_0000_0001</span>;</span>
<span class="line" id="L20"> v -= <span class="tok-number">0x3030_3030_3030_3030</span>;</span>
<span class="line" id="L21"> v = (v * <span class="tok-number">10</span>) + (v >> <span class="tok-number">8</span>); <span class="tok-comment">// will not overflow, fits in 63 bits</span>
</span>
<span class="line" id="L22"> <span class="tok-kw">const</span> v1 = (v & mask) *% mul1;</span>
<span class="line" id="L23"> <span class="tok-kw">const</span> v2 = ((v >> <span class="tok-number">16</span>) & mask) *% mul2;</span>
<span class="line" id="L24"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>((v1 +% v2) >> <span class="tok-number">32</span>)));</span>
<span class="line" id="L25">}</span>
<span class="line" id="L26"></span>
<span class="line" id="L27"><span class="tok-comment">/// Parse digits until a non-digit character is found.</span></span>
<span class="line" id="L28"><span class="tok-kw">fn</span> <span class="tok-fn">tryParseDigits</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, stream: *FloatStream, x: *T, <span class="tok-kw">comptime</span> base: <span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L29"> <span class="tok-comment">// Try to parse 8 digits at a time, using an optimized algorithm.</span>
</span>
<span class="line" id="L30"> <span class="tok-comment">// This only supports decimal digits.</span>
</span>
<span class="line" id="L31"> <span class="tok-kw">if</span> (base == <span class="tok-number">10</span>) {</span>
<span class="line" id="L32"> <span class="tok-kw">while</span> (stream.hasLen(<span class="tok-number">8</span>)) {</span>
<span class="line" id="L33"> <span class="tok-kw">const</span> v = stream.readU64Unchecked();</span>
<span class="line" id="L34"> <span class="tok-kw">if</span> (!isEightDigits(v)) {</span>
<span class="line" id="L35"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L36"> }</span>
<span class="line" id="L37"></span>
<span class="line" id="L38"> x.* = x.* *% <span class="tok-number">1_0000_0000</span> +% parse8Digits(v);</span>
<span class="line" id="L39"> stream.advance(<span class="tok-number">8</span>);</span>
<span class="line" id="L40"> }</span>
<span class="line" id="L41"> }</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"> <span class="tok-kw">while</span> (stream.scanDigit(base)) |digit| {</span>
<span class="line" id="L44"> x.* *%= base;</span>
<span class="line" id="L45"> x.* +%= digit;</span>
<span class="line" id="L46"> }</span>
<span class="line" id="L47">}</span>
<span class="line" id="L48"></span>
<span class="line" id="L49"><span class="tok-kw">fn</span> <span class="tok-fn">min_n_digit_int</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, digit_count: <span class="tok-type">usize</span>) T {</span>
<span class="line" id="L50"> <span class="tok-kw">var</span> n: T = <span class="tok-number">1</span>;</span>
<span class="line" id="L51"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">1</span>;</span>
<span class="line" id="L52"> <span class="tok-kw">while</span> (i < digit_count) : (i += <span class="tok-number">1</span>) n *= <span class="tok-number">10</span>;</span>
<span class="line" id="L53"> <span class="tok-kw">return</span> n;</span>
<span class="line" id="L54">}</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"><span class="tok-comment">/// Parse up to N digits</span></span>
<span class="line" id="L57"><span class="tok-kw">fn</span> <span class="tok-fn">tryParseNDigits</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, stream: *FloatStream, x: *T, <span class="tok-kw">comptime</span> base: <span class="tok-type">u8</span>, <span class="tok-kw">comptime</span> n: <span class="tok-type">usize</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L58"> <span class="tok-kw">while</span> (x.* < min_n_digit_int(T, n)) {</span>
<span class="line" id="L59"> <span class="tok-kw">if</span> (stream.scanDigit(base)) |digit| {</span>
<span class="line" id="L60"> x.* *%= base;</span>
<span class="line" id="L61"> x.* +%= digit;</span>
<span class="line" id="L62"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L63"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L64"> }</span>
<span class="line" id="L65"> }</span>
<span class="line" id="L66">}</span>
<span class="line" id="L67"></span>
<span class="line" id="L68"><span class="tok-comment">/// Parse the scientific notation component of a float.</span></span>
<span class="line" id="L69"><span class="tok-kw">fn</span> <span class="tok-fn">parseScientific</span>(stream: *FloatStream) ?<span class="tok-type">i64</span> {</span>
<span class="line" id="L70"> <span class="tok-kw">var</span> exponent: <span class="tok-type">i64</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L71"> <span class="tok-kw">var</span> negative = <span class="tok-null">false</span>;</span>
<span class="line" id="L72"></span>
<span class="line" id="L73"> <span class="tok-kw">if</span> (stream.first()) |c| {</span>
<span class="line" id="L74"> negative = c == <span class="tok-str">'-'</span>;</span>
<span class="line" id="L75"> <span class="tok-kw">if</span> (c == <span class="tok-str">'-'</span> <span class="tok-kw">or</span> c == <span class="tok-str">'+'</span>) {</span>
<span class="line" id="L76"> stream.advance(<span class="tok-number">1</span>);</span>
<span class="line" id="L77"> }</span>
<span class="line" id="L78"> }</span>
<span class="line" id="L79"> <span class="tok-kw">if</span> (stream.firstIsDigit(<span class="tok-number">10</span>)) {</span>
<span class="line" id="L80"> <span class="tok-kw">while</span> (stream.scanDigit(<span class="tok-number">10</span>)) |digit| {</span>
<span class="line" id="L81"> <span class="tok-comment">// no overflows here, saturate well before overflow</span>
</span>
<span class="line" id="L82"> <span class="tok-kw">if</span> (exponent < <span class="tok-number">0x1000_0000</span>) {</span>
<span class="line" id="L83"> exponent = <span class="tok-number">10</span> * exponent + digit;</span>
<span class="line" id="L84"> }</span>
<span class="line" id="L85"> }</span>
<span class="line" id="L86"></span>
<span class="line" id="L87"> <span class="tok-kw">return</span> <span class="tok-kw">if</span> (negative) -exponent <span class="tok-kw">else</span> exponent;</span>
<span class="line" id="L88"> }</span>
<span class="line" id="L89"></span>
<span class="line" id="L90"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L91">}</span>
<span class="line" id="L92"></span>
<span class="line" id="L93"><span class="tok-kw">const</span> ParseInfo = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L94"> <span class="tok-comment">// 10 or 16</span>
</span>
<span class="line" id="L95"> base: <span class="tok-type">u8</span>,</span>
<span class="line" id="L96"> <span class="tok-comment">// 10^19 fits in u64, 16^16 fits in u64</span>
</span>
<span class="line" id="L97"> max_mantissa_digits: <span class="tok-type">usize</span>,</span>
<span class="line" id="L98"> <span class="tok-comment">// e.g. e or p (E and P also checked)</span>
</span>
<span class="line" id="L99"> exp_char_lower: <span class="tok-type">u8</span>,</span>
<span class="line" id="L100">};</span>
<span class="line" id="L101"></span>
<span class="line" id="L102"><span class="tok-kw">fn</span> <span class="tok-fn">parsePartialNumberBase</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, stream: *FloatStream, negative: <span class="tok-type">bool</span>, n: *<span class="tok-type">usize</span>, <span class="tok-kw">comptime</span> info: ParseInfo) ?Number(T) {</span>
<span class="line" id="L103"> <span class="tok-kw">const</span> MantissaT = common.mantissaType(T);</span>
<span class="line" id="L104"></span>
<span class="line" id="L105"> <span class="tok-comment">// parse initial digits before dot</span>
</span>
<span class="line" id="L106"> <span class="tok-kw">var</span> mantissa: MantissaT = <span class="tok-number">0</span>;</span>
<span class="line" id="L107"> tryParseDigits(MantissaT, stream, &mantissa, info.base);</span>
<span class="line" id="L108"> <span class="tok-kw">var</span> int_end = stream.offsetTrue();</span>
<span class="line" id="L109"> <span class="tok-kw">var</span> n_digits = <span class="tok-builtin">@as</span>(<span class="tok-type">isize</span>, <span class="tok-builtin">@intCast</span>(stream.offsetTrue()));</span>
<span class="line" id="L110"> <span class="tok-comment">// the base being 16 implies a 0x prefix, which shouldn't be included in the digit count</span>
</span>
<span class="line" id="L111"> <span class="tok-kw">if</span> (info.base == <span class="tok-number">16</span>) n_digits -= <span class="tok-number">2</span>;</span>
<span class="line" id="L112"></span>
<span class="line" id="L113"> <span class="tok-comment">// handle dot with the following digits</span>
</span>
<span class="line" id="L114"> <span class="tok-kw">var</span> exponent: <span class="tok-type">i64</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L115"> <span class="tok-kw">if</span> (stream.firstIs(<span class="tok-str">'.'</span>)) {</span>
<span class="line" id="L116"> stream.advance(<span class="tok-number">1</span>);</span>
<span class="line" id="L117"> <span class="tok-kw">const</span> marker = stream.offsetTrue();</span>
<span class="line" id="L118"> tryParseDigits(MantissaT, stream, &mantissa, info.base);</span>
<span class="line" id="L119"> <span class="tok-kw">const</span> n_after_dot = stream.offsetTrue() - marker;</span>
<span class="line" id="L120"> exponent = -<span class="tok-builtin">@as</span>(<span class="tok-type">i64</span>, <span class="tok-builtin">@intCast</span>(n_after_dot));</span>
<span class="line" id="L121"> n_digits += <span class="tok-builtin">@as</span>(<span class="tok-type">isize</span>, <span class="tok-builtin">@intCast</span>(n_after_dot));</span>
<span class="line" id="L122"> }</span>
<span class="line" id="L123"></span>
<span class="line" id="L124"> <span class="tok-comment">// adjust required shift to offset mantissa for base-16 (2^4)</span>
</span>
<span class="line" id="L125"> <span class="tok-kw">if</span> (info.base == <span class="tok-number">16</span>) {</span>
<span class="line" id="L126"> exponent *= <span class="tok-number">4</span>;</span>
<span class="line" id="L127"> }</span>
<span class="line" id="L128"></span>
<span class="line" id="L129"> <span class="tok-kw">if</span> (n_digits == <span class="tok-number">0</span>) {</span>
<span class="line" id="L130"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L131"> }</span>
<span class="line" id="L132"></span>
<span class="line" id="L133"> <span class="tok-comment">// handle scientific format</span>
</span>
<span class="line" id="L134"> <span class="tok-kw">var</span> exp_number: <span class="tok-type">i64</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L135"> <span class="tok-kw">if</span> (stream.firstIsLower(info.exp_char_lower)) {</span>
<span class="line" id="L136"> stream.advance(<span class="tok-number">1</span>);</span>
<span class="line" id="L137"> exp_number = parseScientific(stream) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L138"> exponent += exp_number;</span>
<span class="line" id="L139"> }</span>
<span class="line" id="L140"></span>
<span class="line" id="L141"> <span class="tok-kw">const</span> len = stream.offset; <span class="tok-comment">// length must be complete parsed length</span>
</span>
<span class="line" id="L142"> n.* = len;</span>
<span class="line" id="L143"></span>
<span class="line" id="L144"> <span class="tok-kw">if</span> (stream.underscore_count > <span class="tok-number">0</span> <span class="tok-kw">and</span> !validUnderscores(stream.slice, info.base)) {</span>
<span class="line" id="L145"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L146"> }</span>
<span class="line" id="L147"></span>
<span class="line" id="L148"> <span class="tok-comment">// common case with not many digits</span>
</span>
<span class="line" id="L149"> <span class="tok-kw">if</span> (n_digits <= info.max_mantissa_digits) {</span>
<span class="line" id="L150"> <span class="tok-kw">return</span> Number(T){</span>
<span class="line" id="L151"> .exponent = exponent,</span>
<span class="line" id="L152"> .mantissa = mantissa,</span>
<span class="line" id="L153"> .negative = negative,</span>
<span class="line" id="L154"> .many_digits = <span class="tok-null">false</span>,</span>
<span class="line" id="L155"> .hex = info.base == <span class="tok-number">16</span>,</span>
<span class="line" id="L156"> };</span>
<span class="line" id="L157"> }</span>
<span class="line" id="L158"></span>
<span class="line" id="L159"> n_digits -= info.max_mantissa_digits;</span>
<span class="line" id="L160"> <span class="tok-kw">var</span> many_digits = <span class="tok-null">false</span>;</span>
<span class="line" id="L161"> stream.reset(); <span class="tok-comment">// re-parse from beginning</span>
</span>
<span class="line" id="L162"> <span class="tok-kw">while</span> (stream.firstIs3(<span class="tok-str">'0'</span>, <span class="tok-str">'.'</span>, <span class="tok-str">'_'</span>)) {</span>
<span class="line" id="L163"> <span class="tok-comment">// '0' = '.' + 2</span>
</span>
<span class="line" id="L164"> <span class="tok-kw">const</span> next = stream.firstUnchecked();</span>
<span class="line" id="L165"> <span class="tok-kw">if</span> (next != <span class="tok-str">'_'</span>) {</span>
<span class="line" id="L166"> n_digits -= <span class="tok-builtin">@as</span>(<span class="tok-type">isize</span>, <span class="tok-builtin">@intCast</span>(next -| (<span class="tok-str">'0'</span> - <span class="tok-number">1</span>)));</span>
<span class="line" id="L167"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L168"> stream.underscore_count += <span class="tok-number">1</span>;</span>
<span class="line" id="L169"> }</span>
<span class="line" id="L170"> stream.advance(<span class="tok-number">1</span>);</span>
<span class="line" id="L171"> }</span>
<span class="line" id="L172"> <span class="tok-kw">if</span> (n_digits > <span class="tok-number">0</span>) {</span>
<span class="line" id="L173"> <span class="tok-comment">// at this point we have more than max_mantissa_digits significant digits, let's try again</span>
</span>
<span class="line" id="L174"> many_digits = <span class="tok-null">true</span>;</span>
<span class="line" id="L175"> mantissa = <span class="tok-number">0</span>;</span>
<span class="line" id="L176"> stream.reset();</span>
<span class="line" id="L177"> tryParseNDigits(MantissaT, stream, &mantissa, info.base, info.max_mantissa_digits);</span>
<span class="line" id="L178"></span>
<span class="line" id="L179"> exponent = blk: {</span>
<span class="line" id="L180"> <span class="tok-kw">if</span> (mantissa >= min_n_digit_int(MantissaT, info.max_mantissa_digits)) {</span>
<span class="line" id="L181"> <span class="tok-comment">// big int</span>
</span>
<span class="line" id="L182"> <span class="tok-kw">break</span> :blk <span class="tok-builtin">@as</span>(<span class="tok-type">i64</span>, <span class="tok-builtin">@intCast</span>(int_end)) - <span class="tok-builtin">@as</span>(<span class="tok-type">i64</span>, <span class="tok-builtin">@intCast</span>(stream.offsetTrue()));</span>
<span class="line" id="L183"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L184"> <span class="tok-comment">// the next byte must be present and be '.'</span>
</span>
<span class="line" id="L185"> <span class="tok-comment">// We know this is true because we had more than 19</span>
</span>
<span class="line" id="L186"> <span class="tok-comment">// digits previously, so we overflowed a 64-bit integer,</span>
</span>
<span class="line" id="L187"> <span class="tok-comment">// but parsing only the integral digits produced less</span>
</span>
<span class="line" id="L188"> <span class="tok-comment">// than 19 digits. That means we must have a decimal</span>
</span>
<span class="line" id="L189"> <span class="tok-comment">// point, and at least 1 fractional digit.</span>
</span>
<span class="line" id="L190"> stream.advance(<span class="tok-number">1</span>);</span>
<span class="line" id="L191"> <span class="tok-kw">var</span> marker = stream.offsetTrue();</span>
<span class="line" id="L192"> tryParseNDigits(MantissaT, stream, &mantissa, info.base, info.max_mantissa_digits);</span>
<span class="line" id="L193"> <span class="tok-kw">break</span> :blk <span class="tok-builtin">@as</span>(<span class="tok-type">i64</span>, <span class="tok-builtin">@intCast</span>(marker)) - <span class="tok-builtin">@as</span>(<span class="tok-type">i64</span>, <span class="tok-builtin">@intCast</span>(stream.offsetTrue()));</span>
<span class="line" id="L194"> }</span>
<span class="line" id="L195"> };</span>
<span class="line" id="L196"> <span class="tok-comment">// add back the explicit part</span>
</span>
<span class="line" id="L197"> exponent += exp_number;</span>
<span class="line" id="L198"> }</span>
<span class="line" id="L199"></span>
<span class="line" id="L200"> <span class="tok-kw">return</span> Number(T){</span>
<span class="line" id="L201"> .exponent = exponent,</span>
<span class="line" id="L202"> .mantissa = mantissa,</span>
<span class="line" id="L203"> .negative = negative,</span>
<span class="line" id="L204"> .many_digits = many_digits,</span>
<span class="line" id="L205"> .hex = info.base == <span class="tok-number">16</span>,</span>
<span class="line" id="L206"> };</span>
<span class="line" id="L207">}</span>
<span class="line" id="L208"></span>
<span class="line" id="L209"><span class="tok-comment">/// Parse a partial, non-special floating point number.</span></span>
<span class="line" id="L210"><span class="tok-comment">///</span></span>
<span class="line" id="L211"><span class="tok-comment">/// This creates a representation of the float as the</span></span>
<span class="line" id="L212"><span class="tok-comment">/// significant digits and the decimal exponent.</span></span>
<span class="line" id="L213"><span class="tok-kw">fn</span> <span class="tok-fn">parsePartialNumber</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, negative: <span class="tok-type">bool</span>, n: *<span class="tok-type">usize</span>) ?Number(T) {</span>
<span class="line" id="L214"> std.debug.assert(s.len != <span class="tok-number">0</span>);</span>
<span class="line" id="L215"> <span class="tok-kw">var</span> stream = FloatStream.init(s);</span>
<span class="line" id="L216"> <span class="tok-kw">const</span> MantissaT = common.mantissaType(T);</span>
<span class="line" id="L217"></span>
<span class="line" id="L218"> <span class="tok-kw">if</span> (stream.hasLen(<span class="tok-number">2</span>) <span class="tok-kw">and</span> stream.atUnchecked(<span class="tok-number">0</span>) == <span class="tok-str">'0'</span> <span class="tok-kw">and</span> std.ascii.toLower(stream.atUnchecked(<span class="tok-number">1</span>)) == <span class="tok-str">'x'</span>) {</span>
<span class="line" id="L219"> stream.advance(<span class="tok-number">2</span>);</span>
<span class="line" id="L220"> <span class="tok-kw">return</span> parsePartialNumberBase(T, &stream, negative, n, .{</span>
<span class="line" id="L221"> .base = <span class="tok-number">16</span>,</span>
<span class="line" id="L222"> .max_mantissa_digits = <span class="tok-kw">if</span> (MantissaT == <span class="tok-type">u64</span>) <span class="tok-number">16</span> <span class="tok-kw">else</span> <span class="tok-number">32</span>,</span>
<span class="line" id="L223"> .exp_char_lower = <span class="tok-str">'p'</span>,</span>
<span class="line" id="L224"> });</span>
<span class="line" id="L225"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L226"> <span class="tok-kw">return</span> parsePartialNumberBase(T, &stream, negative, n, .{</span>
<span class="line" id="L227"> .base = <span class="tok-number">10</span>,</span>
<span class="line" id="L228"> .max_mantissa_digits = <span class="tok-kw">if</span> (MantissaT == <span class="tok-type">u64</span>) <span class="tok-number">19</span> <span class="tok-kw">else</span> <span class="tok-number">38</span>,</span>
<span class="line" id="L229"> .exp_char_lower = <span class="tok-str">'e'</span>,</span>
<span class="line" id="L230"> });</span>
<span class="line" id="L231"> }</span>
<span class="line" id="L232">}</span>
<span class="line" id="L233"></span>
<span class="line" id="L234"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parseNumber</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, negative: <span class="tok-type">bool</span>) ?Number(T) {</span>
<span class="line" id="L235"> <span class="tok-kw">var</span> consumed: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L236"> <span class="tok-kw">if</span> (parsePartialNumber(T, s, negative, &consumed)) |number| {</span>
<span class="line" id="L237"> <span class="tok-comment">// must consume entire float (no trailing data)</span>
</span>
<span class="line" id="L238"> <span class="tok-kw">if</span> (s.len == consumed) {</span>
<span class="line" id="L239"> <span class="tok-kw">return</span> number;</span>
<span class="line" id="L240"> }</span>
<span class="line" id="L241"> }</span>
<span class="line" id="L242"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L243">}</span>
<span class="line" id="L244"></span>
<span class="line" id="L245"><span class="tok-kw">fn</span> <span class="tok-fn">parsePartialInfOrNan</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, negative: <span class="tok-type">bool</span>, n: *<span class="tok-type">usize</span>) ?T {</span>
<span class="line" id="L246"> <span class="tok-comment">// inf/infinity; infxxx should only consume inf.</span>
</span>
<span class="line" id="L247"> <span class="tok-kw">if</span> (std.ascii.startsWithIgnoreCase(s, <span class="tok-str">"inf"</span>)) {</span>
<span class="line" id="L248"> n.* = <span class="tok-number">3</span>;</span>
<span class="line" id="L249"> <span class="tok-kw">if</span> (std.ascii.startsWithIgnoreCase(s[<span class="tok-number">3</span>..], <span class="tok-str">"inity"</span>)) {</span>
<span class="line" id="L250"> n.* = <span class="tok-number">8</span>;</span>
<span class="line" id="L251"> }</span>
<span class="line" id="L252"></span>
<span class="line" id="L253"> <span class="tok-kw">return</span> <span class="tok-kw">if</span> (!negative) std.math.inf(T) <span class="tok-kw">else</span> -std.math.inf(T);</span>
<span class="line" id="L254"> }</span>
<span class="line" id="L255"></span>
<span class="line" id="L256"> <span class="tok-kw">if</span> (std.ascii.startsWithIgnoreCase(s, <span class="tok-str">"nan"</span>)) {</span>
<span class="line" id="L257"> n.* = <span class="tok-number">3</span>;</span>
<span class="line" id="L258"> <span class="tok-kw">return</span> std.math.nan(T);</span>
<span class="line" id="L259"> }</span>
<span class="line" id="L260"></span>
<span class="line" id="L261"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L262">}</span>
<span class="line" id="L263"></span>
<span class="line" id="L264"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parseInfOrNan</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, negative: <span class="tok-type">bool</span>) ?T {</span>
<span class="line" id="L265"> <span class="tok-kw">var</span> consumed: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L266"> <span class="tok-kw">if</span> (parsePartialInfOrNan(T, s, negative, &consumed)) |special| {</span>
<span class="line" id="L267"> <span class="tok-kw">if</span> (s.len == consumed) {</span>
<span class="line" id="L268"> <span class="tok-kw">return</span> special;</span>
<span class="line" id="L269"> }</span>
<span class="line" id="L270"> }</span>
<span class="line" id="L271"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L272">}</span>
<span class="line" id="L273"></span>
<span class="line" id="L274"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">validUnderscores</span>(s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, <span class="tok-kw">comptime</span> base: <span class="tok-type">u8</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L275"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L276"> <span class="tok-kw">while</span> (i < s.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L277"> <span class="tok-kw">if</span> (s[i] == <span class="tok-str">'_'</span>) {</span>
<span class="line" id="L278"> <span class="tok-comment">// underscore at start of end</span>
</span>
<span class="line" id="L279"> <span class="tok-kw">if</span> (i == <span class="tok-number">0</span> <span class="tok-kw">or</span> i + <span class="tok-number">1</span> == s.len) {</span>
<span class="line" id="L280"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L281"> }</span>
<span class="line" id="L282"> <span class="tok-comment">// consecutive underscores</span>
</span>
<span class="line" id="L283"> <span class="tok-kw">if</span> (!common.isDigit(s[i - <span class="tok-number">1</span>], base) <span class="tok-kw">or</span> !common.isDigit(s[i + <span class="tok-number">1</span>], base)) {</span>
<span class="line" id="L284"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L285"> }</span>
<span class="line" id="L286"></span>
<span class="line" id="L287"> <span class="tok-comment">// next is guaranteed a digit, skip an extra</span>
</span>
<span class="line" id="L288"> i += <span class="tok-number">1</span>;</span>
<span class="line" id="L289"> }</span>
<span class="line" id="L290"> }</span>
<span class="line" id="L291"></span>
<span class="line" id="L292"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L293">}</span>
<span class="line" id="L294"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/fmt | repos/yazap/docs/src/std/fmt/parse_float/FloatInfo.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L3"></span>
<span class="line" id="L4"><span class="tok-comment">// Minimum exponent that for a fast path case, or `-⌊(MANTISSA_EXPLICIT_BITS+1)/log2(5)⌋`</span>
</span>
<span class="line" id="L5">min_exponent_fast_path: <span class="tok-type">comptime_int</span>,</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-comment">// Maximum exponent that for a fast path case, or `⌊(MANTISSA_EXPLICIT_BITS+1)/log2(5)⌋`</span>
</span>
<span class="line" id="L8">max_exponent_fast_path: <span class="tok-type">comptime_int</span>,</span>
<span class="line" id="L9"></span>
<span class="line" id="L10"><span class="tok-comment">// Maximum exponent that can be represented for a disguised-fast path case.</span>
</span>
<span class="line" id="L11"><span class="tok-comment">// This is `MAX_EXPONENT_FAST_PATH + ⌊(MANTISSA_EXPLICIT_BITS+1)/log2(10)⌋`</span>
</span>
<span class="line" id="L12">max_exponent_fast_path_disguised: <span class="tok-type">comptime_int</span>,</span>
<span class="line" id="L13"></span>
<span class="line" id="L14"><span class="tok-comment">// Maximum mantissa for the fast-path (`1 << 53` for f64).</span>
</span>
<span class="line" id="L15">max_mantissa_fast_path: <span class="tok-type">comptime_int</span>,</span>
<span class="line" id="L16"></span>
<span class="line" id="L17"><span class="tok-comment">// Smallest decimal exponent for a non-zero value. Including subnormals.</span>
</span>
<span class="line" id="L18">smallest_power_of_ten: <span class="tok-type">comptime_int</span>,</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"><span class="tok-comment">// Largest decimal exponent for a non-infinite value.</span>
</span>
<span class="line" id="L21">largest_power_of_ten: <span class="tok-type">comptime_int</span>,</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"><span class="tok-comment">// The number of bits in the significand, *excluding* the hidden bit.</span>
</span>
<span class="line" id="L24">mantissa_explicit_bits: <span class="tok-type">comptime_int</span>,</span>
<span class="line" id="L25"></span>
<span class="line" id="L26"><span class="tok-comment">// Minimum exponent value `-(1 << (EXP_BITS - 1)) + 1`.</span>
</span>
<span class="line" id="L27">minimum_exponent: <span class="tok-type">comptime_int</span>,</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"><span class="tok-comment">// Round-to-even only happens for negative values of q</span>
</span>
<span class="line" id="L30"><span class="tok-comment">// when q ≥ −4 in the 64-bit case and when q ≥ −17 in</span>
</span>
<span class="line" id="L31"><span class="tok-comment">// the 32-bitcase.</span>
</span>
<span class="line" id="L32"><span class="tok-comment">//</span>
</span>
<span class="line" id="L33"><span class="tok-comment">// When q ≥ 0,we have that 5^q ≤ 2m+1. In the 64-bit case,we</span>
</span>
<span class="line" id="L34"><span class="tok-comment">// have 5^q ≤ 2m+1 ≤ 2^54 or q ≤ 23. In the 32-bit case,we have</span>
</span>
<span class="line" id="L35"><span class="tok-comment">// 5^q ≤ 2m+1 ≤ 2^25 or q ≤ 10.</span>
</span>
<span class="line" id="L36"><span class="tok-comment">//</span>
</span>
<span class="line" id="L37"><span class="tok-comment">// When q < 0, we have w ≥ (2m+1)×5^−q. We must have that w < 2^64</span>
</span>
<span class="line" id="L38"><span class="tok-comment">// so (2m+1)×5^−q < 2^64. We have that 2m+1 > 2^53 (64-bit case)</span>
</span>
<span class="line" id="L39"><span class="tok-comment">// or 2m+1 > 2^24 (32-bit case). Hence,we must have 2^53×5^−q < 2^64</span>
</span>
<span class="line" id="L40"><span class="tok-comment">// (64-bit) and 2^24×5^−q < 2^64 (32-bit). Hence we have 5^−q < 2^11</span>
</span>
<span class="line" id="L41"><span class="tok-comment">// or q ≥ −4 (64-bit case) and 5^−q < 2^40 or q ≥ −17 (32-bitcase).</span>
</span>
<span class="line" id="L42"><span class="tok-comment">//</span>
</span>
<span class="line" id="L43"><span class="tok-comment">// Thus we have that we only need to round ties to even when</span>
</span>
<span class="line" id="L44"><span class="tok-comment">// we have that q ∈ [−4,23](in the 64-bit case) or q∈[−17,10]</span>
</span>
<span class="line" id="L45"><span class="tok-comment">// (in the 32-bit case). In both cases,the power of five(5^|q|)</span>
</span>
<span class="line" id="L46"><span class="tok-comment">// fits in a 64-bit word.</span>
</span>
<span class="line" id="L47">min_exponent_round_to_even: <span class="tok-type">comptime_int</span>,</span>
<span class="line" id="L48">max_exponent_round_to_even: <span class="tok-type">comptime_int</span>,</span>
<span class="line" id="L49"></span>
<span class="line" id="L50"><span class="tok-comment">// Largest exponent value `(1 << EXP_BITS) - 1`.</span>
</span>
<span class="line" id="L51">infinite_power: <span class="tok-type">comptime_int</span>,</span>
<span class="line" id="L52"></span>
<span class="line" id="L53"><span class="tok-comment">// Following should compute based on derived calculations where possible.</span>
</span>
<span class="line" id="L54"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">from</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>) Self {</span>
<span class="line" id="L55"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (T) {</span>
<span class="line" id="L56"> <span class="tok-type">f16</span> => .{</span>
<span class="line" id="L57"> <span class="tok-comment">// Fast-Path</span>
</span>
<span class="line" id="L58"> .min_exponent_fast_path = -<span class="tok-number">4</span>,</span>
<span class="line" id="L59"> .max_exponent_fast_path = <span class="tok-number">4</span>,</span>
<span class="line" id="L60"> .max_exponent_fast_path_disguised = <span class="tok-number">7</span>,</span>
<span class="line" id="L61"> .max_mantissa_fast_path = <span class="tok-number">2</span> << std.math.floatMantissaBits(T),</span>
<span class="line" id="L62"> <span class="tok-comment">// Slow + Eisel-Lemire</span>
</span>
<span class="line" id="L63"> .mantissa_explicit_bits = std.math.floatMantissaBits(T),</span>
<span class="line" id="L64"> .infinite_power = <span class="tok-number">0x1f</span>,</span>
<span class="line" id="L65"> <span class="tok-comment">// Eisel-Lemire</span>
</span>
<span class="line" id="L66"> .smallest_power_of_ten = -<span class="tok-number">26</span>, <span class="tok-comment">// TODO: refine, fails one test</span>
</span>
<span class="line" id="L67"> .largest_power_of_ten = <span class="tok-number">4</span>,</span>
<span class="line" id="L68"> .minimum_exponent = -<span class="tok-number">15</span>,</span>
<span class="line" id="L69"> <span class="tok-comment">// w >= (2m+1) * 5^-q and w < 2^64</span>
</span>
<span class="line" id="L70"> <span class="tok-comment">// => 2m+1 > 2^11</span>
</span>
<span class="line" id="L71"> <span class="tok-comment">// => 2^11*5^-q < 2^64</span>
</span>
<span class="line" id="L72"> <span class="tok-comment">// => 5^-q < 2^53</span>
</span>
<span class="line" id="L73"> <span class="tok-comment">// => q >= -23</span>
</span>
<span class="line" id="L74"> .min_exponent_round_to_even = -<span class="tok-number">22</span>,</span>
<span class="line" id="L75"> .max_exponent_round_to_even = <span class="tok-number">5</span>,</span>
<span class="line" id="L76"> },</span>
<span class="line" id="L77"> <span class="tok-type">f32</span> => .{</span>
<span class="line" id="L78"> <span class="tok-comment">// Fast-Path</span>
</span>
<span class="line" id="L79"> .min_exponent_fast_path = -<span class="tok-number">10</span>,</span>
<span class="line" id="L80"> .max_exponent_fast_path = <span class="tok-number">10</span>,</span>
<span class="line" id="L81"> .max_exponent_fast_path_disguised = <span class="tok-number">17</span>,</span>
<span class="line" id="L82"> .max_mantissa_fast_path = <span class="tok-number">2</span> << std.math.floatMantissaBits(T),</span>
<span class="line" id="L83"> <span class="tok-comment">// Slow + Eisel-Lemire</span>
</span>
<span class="line" id="L84"> .mantissa_explicit_bits = std.math.floatMantissaBits(T),</span>
<span class="line" id="L85"> .infinite_power = <span class="tok-number">0xff</span>,</span>
<span class="line" id="L86"> <span class="tok-comment">// Eisel-Lemire</span>
</span>
<span class="line" id="L87"> .smallest_power_of_ten = -<span class="tok-number">65</span>,</span>
<span class="line" id="L88"> .largest_power_of_ten = <span class="tok-number">38</span>,</span>
<span class="line" id="L89"> .minimum_exponent = -<span class="tok-number">127</span>,</span>
<span class="line" id="L90"> .min_exponent_round_to_even = -<span class="tok-number">17</span>,</span>
<span class="line" id="L91"> .max_exponent_round_to_even = <span class="tok-number">10</span>,</span>
<span class="line" id="L92"> },</span>
<span class="line" id="L93"> <span class="tok-type">f64</span> => .{</span>
<span class="line" id="L94"> <span class="tok-comment">// Fast-Path</span>
</span>
<span class="line" id="L95"> .min_exponent_fast_path = -<span class="tok-number">22</span>,</span>
<span class="line" id="L96"> .max_exponent_fast_path = <span class="tok-number">22</span>,</span>
<span class="line" id="L97"> .max_exponent_fast_path_disguised = <span class="tok-number">37</span>,</span>
<span class="line" id="L98"> .max_mantissa_fast_path = <span class="tok-number">2</span> << std.math.floatMantissaBits(T),</span>
<span class="line" id="L99"> <span class="tok-comment">// Slow + Eisel-Lemire</span>
</span>
<span class="line" id="L100"> .mantissa_explicit_bits = std.math.floatMantissaBits(T),</span>
<span class="line" id="L101"> .infinite_power = <span class="tok-number">0x7ff</span>,</span>
<span class="line" id="L102"> <span class="tok-comment">// Eisel-Lemire</span>
</span>
<span class="line" id="L103"> .smallest_power_of_ten = -<span class="tok-number">342</span>,</span>
<span class="line" id="L104"> .largest_power_of_ten = <span class="tok-number">308</span>,</span>
<span class="line" id="L105"> .minimum_exponent = -<span class="tok-number">1023</span>,</span>
<span class="line" id="L106"> .min_exponent_round_to_even = -<span class="tok-number">4</span>,</span>
<span class="line" id="L107"> .max_exponent_round_to_even = <span class="tok-number">23</span>,</span>
<span class="line" id="L108"> },</span>
<span class="line" id="L109"> <span class="tok-type">f128</span> => .{</span>
<span class="line" id="L110"> <span class="tok-comment">// Fast-Path</span>
</span>
<span class="line" id="L111"> .min_exponent_fast_path = -<span class="tok-number">48</span>,</span>
<span class="line" id="L112"> .max_exponent_fast_path = <span class="tok-number">48</span>,</span>
<span class="line" id="L113"> .max_exponent_fast_path_disguised = <span class="tok-number">82</span>,</span>
<span class="line" id="L114"> .max_mantissa_fast_path = <span class="tok-number">2</span> << std.math.floatMantissaBits(T),</span>
<span class="line" id="L115"> <span class="tok-comment">// Slow + Eisel-Lemire</span>
</span>
<span class="line" id="L116"> .mantissa_explicit_bits = std.math.floatMantissaBits(T),</span>
<span class="line" id="L117"> .infinite_power = <span class="tok-number">0x7fff</span>,</span>
<span class="line" id="L118"> <span class="tok-comment">// Eisel-Lemire.</span>
</span>
<span class="line" id="L119"> <span class="tok-comment">// NOTE: Not yet tested (no f128 eisel-lemire implementation)</span>
</span>
<span class="line" id="L120"> .smallest_power_of_ten = -<span class="tok-number">4966</span>,</span>
<span class="line" id="L121"> .largest_power_of_ten = <span class="tok-number">4932</span>,</span>
<span class="line" id="L122"> .minimum_exponent = -<span class="tok-number">16382</span>,</span>
<span class="line" id="L123"> <span class="tok-comment">// 2^113 * 5^-q < 2^128</span>
</span>
<span class="line" id="L124"> <span class="tok-comment">// 5^-q < 2^15</span>
</span>
<span class="line" id="L125"> <span class="tok-comment">// => q >= -6</span>
</span>
<span class="line" id="L126"> .min_exponent_round_to_even = -<span class="tok-number">6</span>,</span>
<span class="line" id="L127"> .max_exponent_round_to_even = <span class="tok-number">49</span>,</span>
<span class="line" id="L128"> },</span>
<span class="line" id="L129"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L130"> };</span>
<span class="line" id="L131">}</span>
<span class="line" id="L132"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> common = <span class="tok-builtin">@import</span>(<span class="tok-str">"common.zig"</span>);</span>
<span class="line" id="L4"><span class="tok-kw">const</span> BiasedFp = common.BiasedFp;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> Decimal = <span class="tok-builtin">@import</span>(<span class="tok-str">"decimal.zig"</span>).Decimal;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> mantissaType = common.mantissaType;</span>
<span class="line" id="L7"></span>
<span class="line" id="L8"><span class="tok-kw">const</span> max_shift = <span class="tok-number">60</span>;</span>
<span class="line" id="L9"><span class="tok-kw">const</span> num_powers = <span class="tok-number">19</span>;</span>
<span class="line" id="L10"><span class="tok-kw">const</span> powers = [_]<span class="tok-type">u8</span>{ <span class="tok-number">0</span>, <span class="tok-number">3</span>, <span class="tok-number">6</span>, <span class="tok-number">9</span>, <span class="tok-number">13</span>, <span class="tok-number">16</span>, <span class="tok-number">19</span>, <span class="tok-number">23</span>, <span class="tok-number">26</span>, <span class="tok-number">29</span>, <span class="tok-number">33</span>, <span class="tok-number">36</span>, <span class="tok-number">39</span>, <span class="tok-number">43</span>, <span class="tok-number">46</span>, <span class="tok-number">49</span>, <span class="tok-number">53</span>, <span class="tok-number">56</span>, <span class="tok-number">59</span> };</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getShift</span>(n: <span class="tok-type">usize</span>) <span class="tok-type">usize</span> {</span>
<span class="line" id="L13"> <span class="tok-kw">return</span> <span class="tok-kw">if</span> (n < num_powers) powers[n] <span class="tok-kw">else</span> max_shift;</span>
<span class="line" id="L14">}</span>
<span class="line" id="L15"></span>
<span class="line" id="L16"><span class="tok-comment">/// Parse the significant digits and biased, binary exponent of a float.</span></span>
<span class="line" id="L17"><span class="tok-comment">///</span></span>
<span class="line" id="L18"><span class="tok-comment">/// This is a fallback algorithm that uses a big-integer representation</span></span>
<span class="line" id="L19"><span class="tok-comment">/// of the float, and therefore is considerably slower than faster</span></span>
<span class="line" id="L20"><span class="tok-comment">/// approximations. However, it will always determine how to round</span></span>
<span class="line" id="L21"><span class="tok-comment">/// the significant digits to the nearest machine float, allowing</span></span>
<span class="line" id="L22"><span class="tok-comment">/// use to handle near half-way cases.</span></span>
<span class="line" id="L23"><span class="tok-comment">///</span></span>
<span class="line" id="L24"><span class="tok-comment">/// Near half-way cases are halfway between two consecutive machine floats.</span></span>
<span class="line" id="L25"><span class="tok-comment">/// For example, the float `16777217.0` has a bitwise representation of</span></span>
<span class="line" id="L26"><span class="tok-comment">/// `100000000000000000000000 1`. Rounding to a single-precision float,</span></span>
<span class="line" id="L27"><span class="tok-comment">/// the trailing `1` is truncated. Using round-nearest, tie-even, any</span></span>
<span class="line" id="L28"><span class="tok-comment">/// value above `16777217.0` must be rounded up to `16777218.0`, while</span></span>
<span class="line" id="L29"><span class="tok-comment">/// any value before or equal to `16777217.0` must be rounded down</span></span>
<span class="line" id="L30"><span class="tok-comment">/// to `16777216.0`. These near-halfway conversions therefore may require</span></span>
<span class="line" id="L31"><span class="tok-comment">/// a large number of digits to unambiguously determine how to round.</span></span>
<span class="line" id="L32"><span class="tok-comment">///</span></span>
<span class="line" id="L33"><span class="tok-comment">/// The algorithms described here are based on "Processing Long Numbers Quickly",</span></span>
<span class="line" id="L34"><span class="tok-comment">/// available here: <https://arxiv.org/pdf/2101.11408.pdf#section.11>.</span></span>
<span class="line" id="L35"><span class="tok-comment">///</span></span>
<span class="line" id="L36"><span class="tok-comment">/// Note that this function needs a lot of stack space and is marked</span></span>
<span class="line" id="L37"><span class="tok-comment">/// cold to hint against inlining into the caller.</span></span>
<span class="line" id="L38"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">convertSlow</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) BiasedFp(T) {</span>
<span class="line" id="L39"> <span class="tok-builtin">@setCold</span>(<span class="tok-null">true</span>);</span>
<span class="line" id="L40"></span>
<span class="line" id="L41"> <span class="tok-kw">const</span> MantissaT = mantissaType(T);</span>
<span class="line" id="L42"> <span class="tok-kw">const</span> min_exponent = -(<span class="tok-number">1</span> << (math.floatExponentBits(T) - <span class="tok-number">1</span>)) + <span class="tok-number">1</span>;</span>
<span class="line" id="L43"> <span class="tok-kw">const</span> infinite_power = (<span class="tok-number">1</span> << math.floatExponentBits(T)) - <span class="tok-number">1</span>;</span>
<span class="line" id="L44"> <span class="tok-kw">const</span> mantissa_explicit_bits = math.floatMantissaBits(T);</span>
<span class="line" id="L45"></span>
<span class="line" id="L46"> <span class="tok-kw">var</span> d = Decimal(T).parse(s); <span class="tok-comment">// no need to recheck underscores</span>
</span>
<span class="line" id="L47"> <span class="tok-kw">if</span> (d.num_digits == <span class="tok-number">0</span> <span class="tok-kw">or</span> d.decimal_point < Decimal(T).min_exponent) {</span>
<span class="line" id="L48"> <span class="tok-kw">return</span> BiasedFp(T).zero();</span>
<span class="line" id="L49"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (d.decimal_point >= Decimal(T).max_exponent) {</span>
<span class="line" id="L50"> <span class="tok-kw">return</span> BiasedFp(T).inf(T);</span>
<span class="line" id="L51"> }</span>
<span class="line" id="L52"></span>
<span class="line" id="L53"> <span class="tok-kw">var</span> exp2: <span class="tok-type">i32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L54"> <span class="tok-comment">// Shift right toward (1/2 .. 1]</span>
</span>
<span class="line" id="L55"> <span class="tok-kw">while</span> (d.decimal_point > <span class="tok-number">0</span>) {</span>
<span class="line" id="L56"> <span class="tok-kw">const</span> n = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(d.decimal_point));</span>
<span class="line" id="L57"> <span class="tok-kw">const</span> shift = getShift(n);</span>
<span class="line" id="L58"> d.rightShift(shift);</span>
<span class="line" id="L59"> <span class="tok-kw">if</span> (d.decimal_point < -Decimal(T).decimal_point_range) {</span>
<span class="line" id="L60"> <span class="tok-kw">return</span> BiasedFp(T).zero();</span>
<span class="line" id="L61"> }</span>
<span class="line" id="L62"> exp2 += <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(shift));</span>
<span class="line" id="L63"> }</span>
<span class="line" id="L64"> <span class="tok-comment">// Shift left toward (1/2 .. 1]</span>
</span>
<span class="line" id="L65"> <span class="tok-kw">while</span> (d.decimal_point <= <span class="tok-number">0</span>) {</span>
<span class="line" id="L66"> <span class="tok-kw">const</span> shift = blk: {</span>
<span class="line" id="L67"> <span class="tok-kw">if</span> (d.decimal_point == <span class="tok-number">0</span>) {</span>
<span class="line" id="L68"> <span class="tok-kw">break</span> :blk <span class="tok-kw">switch</span> (d.digits[<span class="tok-number">0</span>]) {</span>
<span class="line" id="L69"> <span class="tok-number">5</span>...<span class="tok-number">9</span> => <span class="tok-kw">break</span>,</span>
<span class="line" id="L70"> <span class="tok-number">0</span>, <span class="tok-number">1</span> => <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">2</span>),</span>
<span class="line" id="L71"> <span class="tok-kw">else</span> => <span class="tok-number">1</span>,</span>
<span class="line" id="L72"> };</span>
<span class="line" id="L73"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L74"> <span class="tok-kw">const</span> n = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(-d.decimal_point));</span>
<span class="line" id="L75"> <span class="tok-kw">break</span> :blk getShift(n);</span>
<span class="line" id="L76"> }</span>
<span class="line" id="L77"> };</span>
<span class="line" id="L78"> d.leftShift(shift);</span>
<span class="line" id="L79"> <span class="tok-kw">if</span> (d.decimal_point > Decimal(T).decimal_point_range) {</span>
<span class="line" id="L80"> <span class="tok-kw">return</span> BiasedFp(T).inf(T);</span>
<span class="line" id="L81"> }</span>
<span class="line" id="L82"> exp2 -= <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(shift));</span>
<span class="line" id="L83"> }</span>
<span class="line" id="L84"> <span class="tok-comment">// We are now in the range [1/2 .. 1] but the binary format uses [1 .. 2]</span>
</span>
<span class="line" id="L85"> exp2 -= <span class="tok-number">1</span>;</span>
<span class="line" id="L86"> <span class="tok-kw">while</span> (min_exponent + <span class="tok-number">1</span> > exp2) {</span>
<span class="line" id="L87"> <span class="tok-kw">var</span> n = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>((min_exponent + <span class="tok-number">1</span>) - exp2));</span>
<span class="line" id="L88"> <span class="tok-kw">if</span> (n > max_shift) {</span>
<span class="line" id="L89"> n = max_shift;</span>
<span class="line" id="L90"> }</span>
<span class="line" id="L91"> d.rightShift(n);</span>
<span class="line" id="L92"> exp2 += <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(n));</span>
<span class="line" id="L93"> }</span>
<span class="line" id="L94"> <span class="tok-kw">if</span> (exp2 - min_exponent >= infinite_power) {</span>
<span class="line" id="L95"> <span class="tok-kw">return</span> BiasedFp(T).inf(T);</span>
<span class="line" id="L96"> }</span>
<span class="line" id="L97"></span>
<span class="line" id="L98"> <span class="tok-comment">// Shift the decimal to the hidden bit, and then round the value</span>
</span>
<span class="line" id="L99"> <span class="tok-comment">// to get the high mantissa+1 bits.</span>
</span>
<span class="line" id="L100"> d.leftShift(mantissa_explicit_bits + <span class="tok-number">1</span>);</span>
<span class="line" id="L101"> <span class="tok-kw">var</span> mantissa = d.round();</span>
<span class="line" id="L102"> <span class="tok-kw">if</span> (mantissa >= (<span class="tok-builtin">@as</span>(MantissaT, <span class="tok-number">1</span>) << (mantissa_explicit_bits + <span class="tok-number">1</span>))) {</span>
<span class="line" id="L103"> <span class="tok-comment">// Rounding up overflowed to the carry bit, need to</span>
</span>
<span class="line" id="L104"> <span class="tok-comment">// shift back to the hidden bit.</span>
</span>
<span class="line" id="L105"> d.rightShift(<span class="tok-number">1</span>);</span>
<span class="line" id="L106"> exp2 += <span class="tok-number">1</span>;</span>
<span class="line" id="L107"> mantissa = d.round();</span>
<span class="line" id="L108"> <span class="tok-kw">if</span> ((exp2 - min_exponent) >= infinite_power) {</span>
<span class="line" id="L109"> <span class="tok-kw">return</span> BiasedFp(T).inf(T);</span>
<span class="line" id="L110"> }</span>
<span class="line" id="L111"> }</span>
<span class="line" id="L112"> <span class="tok-kw">var</span> power2 = exp2 - min_exponent;</span>
<span class="line" id="L113"> <span class="tok-kw">if</span> (mantissa < (<span class="tok-builtin">@as</span>(MantissaT, <span class="tok-number">1</span>) << mantissa_explicit_bits)) {</span>
<span class="line" id="L114"> power2 -= <span class="tok-number">1</span>;</span>
<span class="line" id="L115"> }</span>
<span class="line" id="L116"> <span class="tok-comment">// Zero out all the bits above the explicit mantissa bits.</span>
</span>
<span class="line" id="L117"> mantissa &= (<span class="tok-builtin">@as</span>(MantissaT, <span class="tok-number">1</span>) << mantissa_explicit_bits) - <span class="tok-number">1</span>;</span>
<span class="line" id="L118"> <span class="tok-kw">return</span> .{ .f = mantissa, .e = power2 };</span>
<span class="line" id="L119">}</span>
<span class="line" id="L120"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! Conversion of hex-float representation into an accurate value.</span></span>
<span class="line" id="L2"><span class="tok-comment">//</span>
</span>
<span class="line" id="L3"><span class="tok-comment">// Derived from golang strconv/atof.go.</span>
</span>
<span class="line" id="L4"></span>
<span class="line" id="L5"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L6"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> common = <span class="tok-builtin">@import</span>(<span class="tok-str">"common.zig"</span>);</span>
<span class="line" id="L8"><span class="tok-kw">const</span> Number = common.Number;</span>
<span class="line" id="L9"><span class="tok-kw">const</span> floatFromUnsigned = common.floatFromUnsigned;</span>
<span class="line" id="L10"></span>
<span class="line" id="L11"><span class="tok-comment">// converts the form 0xMMM.NNNpEEE.</span>
</span>
<span class="line" id="L12"><span class="tok-comment">//</span>
</span>
<span class="line" id="L13"><span class="tok-comment">// MMM.NNN = mantissa</span>
</span>
<span class="line" id="L14"><span class="tok-comment">// EEE = exponent</span>
</span>
<span class="line" id="L15"><span class="tok-comment">//</span>
</span>
<span class="line" id="L16"><span class="tok-comment">// MMM.NNN is stored as an integer, the exponent is offset.</span>
</span>
<span class="line" id="L17"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">convertHex</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, n_: Number(T)) T {</span>
<span class="line" id="L18"> <span class="tok-kw">const</span> MantissaT = common.mantissaType(T);</span>
<span class="line" id="L19"> <span class="tok-kw">var</span> n = n_;</span>
<span class="line" id="L20"></span>
<span class="line" id="L21"> <span class="tok-kw">if</span> (n.mantissa == <span class="tok-number">0</span>) {</span>
<span class="line" id="L22"> <span class="tok-kw">return</span> <span class="tok-kw">if</span> (n.negative) -<span class="tok-number">0.0</span> <span class="tok-kw">else</span> <span class="tok-number">0.0</span>;</span>
<span class="line" id="L23"> }</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"> <span class="tok-kw">const</span> max_exp = math.floatExponentMax(T);</span>
<span class="line" id="L26"> <span class="tok-kw">const</span> min_exp = math.floatExponentMin(T);</span>
<span class="line" id="L27"> <span class="tok-kw">const</span> mantissa_bits = math.floatMantissaBits(T);</span>
<span class="line" id="L28"> <span class="tok-kw">const</span> exp_bits = math.floatExponentBits(T);</span>
<span class="line" id="L29"> <span class="tok-kw">const</span> exp_bias = min_exp - <span class="tok-number">1</span>;</span>
<span class="line" id="L30"></span>
<span class="line" id="L31"> <span class="tok-comment">// mantissa now implicitly divided by 2^mantissa_bits</span>
</span>
<span class="line" id="L32"> n.exponent += mantissa_bits;</span>
<span class="line" id="L33"></span>
<span class="line" id="L34"> <span class="tok-comment">// Shift mantissa and exponent to bring representation into float range.</span>
</span>
<span class="line" id="L35"> <span class="tok-comment">// Eventually we want a mantissa with a leading 1-bit followed by mantbits other bits.</span>
</span>
<span class="line" id="L36"> <span class="tok-comment">// For rounding, we need two more, where the bottom bit represents</span>
</span>
<span class="line" id="L37"> <span class="tok-comment">// whether that bit or any later bit was non-zero.</span>
</span>
<span class="line" id="L38"> <span class="tok-comment">// (If the mantissa has already lost non-zero bits, trunc is true,</span>
</span>
<span class="line" id="L39"> <span class="tok-comment">// and we OR in a 1 below after shifting left appropriately.)</span>
</span>
<span class="line" id="L40"> <span class="tok-kw">while</span> (n.mantissa != <span class="tok-number">0</span> <span class="tok-kw">and</span> n.mantissa >> (mantissa_bits + <span class="tok-number">2</span>) == <span class="tok-number">0</span>) {</span>
<span class="line" id="L41"> n.mantissa <<= <span class="tok-number">1</span>;</span>
<span class="line" id="L42"> n.exponent -= <span class="tok-number">1</span>;</span>
<span class="line" id="L43"> }</span>
<span class="line" id="L44"> <span class="tok-kw">if</span> (n.many_digits) {</span>
<span class="line" id="L45"> n.mantissa |= <span class="tok-number">1</span>;</span>
<span class="line" id="L46"> }</span>
<span class="line" id="L47"> <span class="tok-kw">while</span> (n.mantissa >> (<span class="tok-number">1</span> + mantissa_bits + <span class="tok-number">2</span>) != <span class="tok-number">0</span>) {</span>
<span class="line" id="L48"> n.mantissa = (n.mantissa >> <span class="tok-number">1</span>) | (n.mantissa & <span class="tok-number">1</span>);</span>
<span class="line" id="L49"> n.exponent += <span class="tok-number">1</span>;</span>
<span class="line" id="L50"> }</span>
<span class="line" id="L51"></span>
<span class="line" id="L52"> <span class="tok-comment">// If exponent is too negative,</span>
</span>
<span class="line" id="L53"> <span class="tok-comment">// denormalize in hopes of making it representable.</span>
</span>
<span class="line" id="L54"> <span class="tok-comment">// (The -2 is for the rounding bits.)</span>
</span>
<span class="line" id="L55"> <span class="tok-kw">while</span> (n.mantissa > <span class="tok-number">1</span> <span class="tok-kw">and</span> n.exponent < min_exp - <span class="tok-number">2</span>) {</span>
<span class="line" id="L56"> n.mantissa = (n.mantissa >> <span class="tok-number">1</span>) | (n.mantissa & <span class="tok-number">1</span>);</span>
<span class="line" id="L57"> n.exponent += <span class="tok-number">1</span>;</span>
<span class="line" id="L58"> }</span>
<span class="line" id="L59"></span>
<span class="line" id="L60"> <span class="tok-comment">// Round using two bottom bits.</span>
</span>
<span class="line" id="L61"> <span class="tok-kw">var</span> round = n.mantissa & <span class="tok-number">3</span>;</span>
<span class="line" id="L62"> n.mantissa >>= <span class="tok-number">2</span>;</span>
<span class="line" id="L63"> round |= n.mantissa & <span class="tok-number">1</span>; <span class="tok-comment">// round to even (round up if mantissa is odd)</span>
</span>
<span class="line" id="L64"> n.exponent += <span class="tok-number">2</span>;</span>
<span class="line" id="L65"> <span class="tok-kw">if</span> (round == <span class="tok-number">3</span>) {</span>
<span class="line" id="L66"> n.mantissa += <span class="tok-number">1</span>;</span>
<span class="line" id="L67"> <span class="tok-kw">if</span> (n.mantissa == <span class="tok-number">1</span> << (<span class="tok-number">1</span> + mantissa_bits)) {</span>
<span class="line" id="L68"> n.mantissa >>= <span class="tok-number">1</span>;</span>
<span class="line" id="L69"> n.exponent += <span class="tok-number">1</span>;</span>
<span class="line" id="L70"> }</span>
<span class="line" id="L71"> }</span>
<span class="line" id="L72"></span>
<span class="line" id="L73"> <span class="tok-comment">// Denormal or zero</span>
</span>
<span class="line" id="L74"> <span class="tok-kw">if</span> (n.mantissa >> mantissa_bits == <span class="tok-number">0</span>) {</span>
<span class="line" id="L75"> n.exponent = exp_bias;</span>
<span class="line" id="L76"> }</span>
<span class="line" id="L77"></span>
<span class="line" id="L78"> <span class="tok-comment">// Infinity and range error</span>
</span>
<span class="line" id="L79"> <span class="tok-kw">if</span> (n.exponent > max_exp) {</span>
<span class="line" id="L80"> <span class="tok-kw">return</span> math.inf(T);</span>
<span class="line" id="L81"> }</span>
<span class="line" id="L82"></span>
<span class="line" id="L83"> <span class="tok-kw">var</span> bits = n.mantissa & ((<span class="tok-number">1</span> << mantissa_bits) - <span class="tok-number">1</span>);</span>
<span class="line" id="L84"> bits |= <span class="tok-builtin">@as</span>(MantissaT, <span class="tok-builtin">@intCast</span>((n.exponent - exp_bias) & ((<span class="tok-number">1</span> << exp_bits) - <span class="tok-number">1</span>))) << mantissa_bits;</span>
<span class="line" id="L85"> <span class="tok-kw">if</span> (n.negative) {</span>
<span class="line" id="L86"> bits |= <span class="tok-number">1</span> << (mantissa_bits + exp_bits);</span>
<span class="line" id="L87"> }</span>
<span class="line" id="L88"> <span class="tok-kw">return</span> floatFromUnsigned(T, MantissaT, bits);</span>
<span class="line" id="L89">}</span>
<span class="line" id="L90"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-comment">/// A custom N-bit floating point type, representing `f * 2^e`.</span></span>
<span class="line" id="L4"><span class="tok-comment">/// e is biased, so it be directly shifted into the exponent bits.</span></span>
<span class="line" id="L5"><span class="tok-comment">/// Negative exponent indicates an invalid result.</span></span>
<span class="line" id="L6"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">BiasedFp</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L7"> <span class="tok-kw">const</span> MantissaT = mantissaType(T);</span>
<span class="line" id="L8"></span>
<span class="line" id="L9"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L10"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"> <span class="tok-comment">/// The significant digits.</span></span>
<span class="line" id="L13"> f: MantissaT,</span>
<span class="line" id="L14"> <span class="tok-comment">/// The biased, binary exponent.</span></span>
<span class="line" id="L15"> e: <span class="tok-type">i32</span>,</span>
<span class="line" id="L16"></span>
<span class="line" id="L17"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">zero</span>() Self {</span>
<span class="line" id="L18"> <span class="tok-kw">return</span> .{ .f = <span class="tok-number">0</span>, .e = <span class="tok-number">0</span> };</span>
<span class="line" id="L19"> }</span>
<span class="line" id="L20"></span>
<span class="line" id="L21"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">zeroPow2</span>(e: <span class="tok-type">i32</span>) Self {</span>
<span class="line" id="L22"> <span class="tok-kw">return</span> .{ .f = <span class="tok-number">0</span>, .e = e };</span>
<span class="line" id="L23"> }</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">inf</span>(<span class="tok-kw">comptime</span> FloatT: <span class="tok-type">type</span>) Self {</span>
<span class="line" id="L26"> <span class="tok-kw">return</span> .{ .f = <span class="tok-number">0</span>, .e = (<span class="tok-number">1</span> << std.math.floatExponentBits(FloatT)) - <span class="tok-number">1</span> };</span>
<span class="line" id="L27"> }</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">eql</span>(self: Self, other: Self) <span class="tok-type">bool</span> {</span>
<span class="line" id="L30"> <span class="tok-kw">return</span> self.f == other.f <span class="tok-kw">and</span> self.e == other.e;</span>
<span class="line" id="L31"> }</span>
<span class="line" id="L32"></span>
<span class="line" id="L33"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">toFloat</span>(self: Self, <span class="tok-kw">comptime</span> FloatT: <span class="tok-type">type</span>, negative: <span class="tok-type">bool</span>) FloatT {</span>
<span class="line" id="L34"> <span class="tok-kw">var</span> word = self.f;</span>
<span class="line" id="L35"> word |= <span class="tok-builtin">@as</span>(MantissaT, <span class="tok-builtin">@intCast</span>(self.e)) << std.math.floatMantissaBits(FloatT);</span>
<span class="line" id="L36"> <span class="tok-kw">var</span> f = floatFromUnsigned(FloatT, MantissaT, word);</span>
<span class="line" id="L37"> <span class="tok-kw">if</span> (negative) f = -f;</span>
<span class="line" id="L38"> <span class="tok-kw">return</span> f;</span>
<span class="line" id="L39"> }</span>
<span class="line" id="L40"> };</span>
<span class="line" id="L41">}</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">floatFromUnsigned</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, <span class="tok-kw">comptime</span> MantissaT: <span class="tok-type">type</span>, v: MantissaT) T {</span>
<span class="line" id="L44"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (T) {</span>
<span class="line" id="L45"> <span class="tok-type">f16</span> => <span class="tok-builtin">@as</span>(<span class="tok-type">f16</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@truncate</span>(v)))),</span>
<span class="line" id="L46"> <span class="tok-type">f32</span> => <span class="tok-builtin">@as</span>(<span class="tok-type">f32</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>(v)))),</span>
<span class="line" id="L47"> <span class="tok-type">f64</span> => <span class="tok-builtin">@as</span>(<span class="tok-type">f64</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@truncate</span>(v)))),</span>
<span class="line" id="L48"> <span class="tok-type">f128</span> => <span class="tok-builtin">@as</span>(<span class="tok-type">f128</span>, <span class="tok-builtin">@bitCast</span>(v)),</span>
<span class="line" id="L49"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L50"> };</span>
<span class="line" id="L51">}</span>
<span class="line" id="L52"></span>
<span class="line" id="L53"><span class="tok-comment">/// Represents a parsed floating point value as its components.</span></span>
<span class="line" id="L54"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">Number</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L55"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L56"> exponent: <span class="tok-type">i64</span>,</span>
<span class="line" id="L57"> mantissa: mantissaType(T),</span>
<span class="line" id="L58"> negative: <span class="tok-type">bool</span>,</span>
<span class="line" id="L59"> <span class="tok-comment">/// More than max_mantissa digits were found during parse</span></span>
<span class="line" id="L60"> many_digits: <span class="tok-type">bool</span>,</span>
<span class="line" id="L61"> <span class="tok-comment">/// The number was a hex-float (e.g. 0x1.234p567)</span></span>
<span class="line" id="L62"> hex: <span class="tok-type">bool</span>,</span>
<span class="line" id="L63"> };</span>
<span class="line" id="L64">}</span>
<span class="line" id="L65"></span>
<span class="line" id="L66"><span class="tok-comment">/// Determine if 8 bytes are all decimal digits.</span></span>
<span class="line" id="L67"><span class="tok-comment">/// This does not care about the order in which the bytes were loaded.</span></span>
<span class="line" id="L68"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isEightDigits</span>(v: <span class="tok-type">u64</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L69"> <span class="tok-kw">const</span> a = v +% <span class="tok-number">0x4646_4646_4646_4646</span>;</span>
<span class="line" id="L70"> <span class="tok-kw">const</span> b = v -% <span class="tok-number">0x3030_3030_3030_3030</span>;</span>
<span class="line" id="L71"> <span class="tok-kw">return</span> ((a | b) & <span class="tok-number">0x8080_8080_8080_8080</span>) == <span class="tok-number">0</span>;</span>
<span class="line" id="L72">}</span>
<span class="line" id="L73"></span>
<span class="line" id="L74"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isDigit</span>(c: <span class="tok-type">u8</span>, <span class="tok-kw">comptime</span> base: <span class="tok-type">u8</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L75"> std.debug.assert(base == <span class="tok-number">10</span> <span class="tok-kw">or</span> base == <span class="tok-number">16</span>);</span>
<span class="line" id="L76"></span>
<span class="line" id="L77"> <span class="tok-kw">return</span> <span class="tok-kw">if</span> (base == <span class="tok-number">10</span>)</span>
<span class="line" id="L78"> <span class="tok-str">'0'</span> <= c <span class="tok-kw">and</span> c <= <span class="tok-str">'9'</span></span>
<span class="line" id="L79"> <span class="tok-kw">else</span></span>
<span class="line" id="L80"> <span class="tok-str">'0'</span> <= c <span class="tok-kw">and</span> c <= <span class="tok-str">'9'</span> <span class="tok-kw">or</span> <span class="tok-str">'a'</span> <= c <span class="tok-kw">and</span> c <= <span class="tok-str">'f'</span> <span class="tok-kw">or</span> <span class="tok-str">'A'</span> <= c <span class="tok-kw">and</span> c <= <span class="tok-str">'F'</span>;</span>
<span class="line" id="L81">}</span>
<span class="line" id="L82"></span>
<span class="line" id="L83"><span class="tok-comment">/// Returns the underlying storage type used for the mantissa of floating-point type.</span></span>
<span class="line" id="L84"><span class="tok-comment">/// The output unsigned type must have at least as many bits as the input floating-point type.</span></span>
<span class="line" id="L85"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">mantissaType</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L86"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (T) {</span>
<span class="line" id="L87"> <span class="tok-type">f16</span>, <span class="tok-type">f32</span>, <span class="tok-type">f64</span> => <span class="tok-type">u64</span>,</span>
<span class="line" id="L88"> <span class="tok-type">f128</span> => <span class="tok-type">u128</span>,</span>
<span class="line" id="L89"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L90"> };</span>
<span class="line" id="L91">}</span>
<span class="line" id="L92"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> parse = <span class="tok-builtin">@import</span>(<span class="tok-str">"parse.zig"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> convertFast = <span class="tok-builtin">@import</span>(<span class="tok-str">"convert_fast.zig"</span>).convertFast;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> convertEiselLemire = <span class="tok-builtin">@import</span>(<span class="tok-str">"convert_eisel_lemire.zig"</span>).convertEiselLemire;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> convertSlow = <span class="tok-builtin">@import</span>(<span class="tok-str">"convert_slow.zig"</span>).convertSlow;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> convertHex = <span class="tok-builtin">@import</span>(<span class="tok-str">"convert_hex.zig"</span>).convertHex;</span>
<span class="line" id="L7"></span>
<span class="line" id="L8"><span class="tok-kw">const</span> optimize = <span class="tok-null">true</span>;</span>
<span class="line" id="L9"></span>
<span class="line" id="L10"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ParseFloatError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L11"> InvalidCharacter,</span>
<span class="line" id="L12">};</span>
<span class="line" id="L13"></span>
<span class="line" id="L14"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parseFloat</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) ParseFloatError!T {</span>
<span class="line" id="L15"> <span class="tok-kw">if</span> (<span class="tok-builtin">@typeInfo</span>(T) != .Float) {</span>
<span class="line" id="L16"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Cannot parse a float into a non-floating point type."</span>);</span>
<span class="line" id="L17"> }</span>
<span class="line" id="L18"></span>
<span class="line" id="L19"> <span class="tok-kw">if</span> (T == <span class="tok-type">f80</span>) {</span>
<span class="line" id="L20"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"TODO support parsing float to f80"</span>);</span>
<span class="line" id="L21"> }</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"> <span class="tok-kw">if</span> (s.len == <span class="tok-number">0</span>) {</span>
<span class="line" id="L24"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidCharacter;</span>
<span class="line" id="L25"> }</span>
<span class="line" id="L26"></span>
<span class="line" id="L27"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L28"> <span class="tok-kw">const</span> negative = s[i] == <span class="tok-str">'-'</span>;</span>
<span class="line" id="L29"> <span class="tok-kw">if</span> (s[i] == <span class="tok-str">'-'</span> <span class="tok-kw">or</span> s[i] == <span class="tok-str">'+'</span>) {</span>
<span class="line" id="L30"> i += <span class="tok-number">1</span>;</span>
<span class="line" id="L31"> }</span>
<span class="line" id="L32"> <span class="tok-kw">if</span> (s.len == i) {</span>
<span class="line" id="L33"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidCharacter;</span>
<span class="line" id="L34"> }</span>
<span class="line" id="L35"></span>
<span class="line" id="L36"> <span class="tok-kw">const</span> n = parse.parseNumber(T, s[i..], negative) <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L37"> <span class="tok-kw">return</span> parse.parseInfOrNan(T, s[i..], negative) <span class="tok-kw">orelse</span> <span class="tok-kw">error</span>.InvalidCharacter;</span>
<span class="line" id="L38"> };</span>
<span class="line" id="L39"></span>
<span class="line" id="L40"> <span class="tok-kw">if</span> (n.hex) {</span>
<span class="line" id="L41"> <span class="tok-kw">return</span> convertHex(T, n);</span>
<span class="line" id="L42"> }</span>
<span class="line" id="L43"></span>
<span class="line" id="L44"> <span class="tok-kw">if</span> (optimize) {</span>
<span class="line" id="L45"> <span class="tok-kw">if</span> (convertFast(T, n)) |f| {</span>
<span class="line" id="L46"> <span class="tok-kw">return</span> f;</span>
<span class="line" id="L47"> }</span>
<span class="line" id="L48"></span>
<span class="line" id="L49"> <span class="tok-kw">if</span> (T == <span class="tok-type">f16</span> <span class="tok-kw">or</span> T == <span class="tok-type">f32</span> <span class="tok-kw">or</span> T == <span class="tok-type">f64</span>) {</span>
<span class="line" id="L50"> <span class="tok-comment">// If significant digits were truncated, then we can have rounding error</span>
</span>
<span class="line" id="L51"> <span class="tok-comment">// only if `mantissa + 1` produces a different result. We also avoid</span>
</span>
<span class="line" id="L52"> <span class="tok-comment">// redundantly using the Eisel-Lemire algorithm if it was unable to</span>
</span>
<span class="line" id="L53"> <span class="tok-comment">// correctly round on the first pass.</span>
</span>
<span class="line" id="L54"> <span class="tok-kw">if</span> (convertEiselLemire(T, n.exponent, n.mantissa)) |bf| {</span>
<span class="line" id="L55"> <span class="tok-kw">if</span> (!n.many_digits) {</span>
<span class="line" id="L56"> <span class="tok-kw">return</span> bf.toFloat(T, n.negative);</span>
<span class="line" id="L57"> }</span>
<span class="line" id="L58"> <span class="tok-kw">if</span> (convertEiselLemire(T, n.exponent, n.mantissa + <span class="tok-number">1</span>)) |bf2| {</span>
<span class="line" id="L59"> <span class="tok-kw">if</span> (bf.eql(bf2)) {</span>
<span class="line" id="L60"> <span class="tok-kw">return</span> bf.toFloat(T, n.negative);</span>
<span class="line" id="L61"> }</span>
<span class="line" id="L62"> }</span>
<span class="line" id="L63"> }</span>
<span class="line" id="L64"> }</span>
<span class="line" id="L65"> }</span>
<span class="line" id="L66"></span>
<span class="line" id="L67"> <span class="tok-comment">// Unable to correctly round the float using the Eisel-Lemire algorithm.</span>
</span>
<span class="line" id="L68"> <span class="tok-comment">// Fallback to a slower, but always correct algorithm.</span>
</span>
<span class="line" id="L69"> <span class="tok-kw">return</span> convertSlow(T, s[i..]).toFloat(T, negative);</span>
<span class="line" id="L70">}</span>
<span class="line" id="L71"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/fmt | repos/yazap/docs/src/std/fmt/errol/lookup.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> HP = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2"> val: <span class="tok-type">f64</span>,</span>
<span class="line" id="L3"> off: <span class="tok-type">f64</span>,</span>
<span class="line" id="L4">};</span>
<span class="line" id="L5"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> lookup_table = [_]HP{</span>
<span class="line" id="L6"> HP{ .val = <span class="tok-number">1.000000e+308</span>, .off = -<span class="tok-number">1.097906362944045488e+291</span> },</span>
<span class="line" id="L7"> HP{ .val = <span class="tok-number">1.000000e+307</span>, .off = <span class="tok-number">1.396894023974354241e+290</span> },</span>
<span class="line" id="L8"> HP{ .val = <span class="tok-number">1.000000e+306</span>, .off = -<span class="tok-number">1.721606459673645508e+289</span> },</span>
<span class="line" id="L9"> HP{ .val = <span class="tok-number">1.000000e+305</span>, .off = <span class="tok-number">6.074644749446353973e+288</span> },</span>
<span class="line" id="L10"> HP{ .val = <span class="tok-number">1.000000e+304</span>, .off = <span class="tok-number">6.074644749446353567e+287</span> },</span>
<span class="line" id="L11"> HP{ .val = <span class="tok-number">1.000000e+303</span>, .off = -<span class="tok-number">1.617650767864564452e+284</span> },</span>
<span class="line" id="L12"> HP{ .val = <span class="tok-number">1.000000e+302</span>, .off = -<span class="tok-number">7.629703079084895055e+285</span> },</span>
<span class="line" id="L13"> HP{ .val = <span class="tok-number">1.000000e+301</span>, .off = -<span class="tok-number">5.250476025520442286e+284</span> },</span>
<span class="line" id="L14"> HP{ .val = <span class="tok-number">1.000000e+300</span>, .off = -<span class="tok-number">5.250476025520441956e+283</span> },</span>
<span class="line" id="L15"> HP{ .val = <span class="tok-number">1.000000e+299</span>, .off = -<span class="tok-number">5.250476025520441750e+282</span> },</span>
<span class="line" id="L16"> HP{ .val = <span class="tok-number">1.000000e+298</span>, .off = <span class="tok-number">4.043379652465702264e+281</span> },</span>
<span class="line" id="L17"> HP{ .val = <span class="tok-number">1.000000e+297</span>, .off = -<span class="tok-number">1.765280146275637946e+280</span> },</span>
<span class="line" id="L18"> HP{ .val = <span class="tok-number">1.000000e+296</span>, .off = <span class="tok-number">1.865132227937699609e+279</span> },</span>
<span class="line" id="L19"> HP{ .val = <span class="tok-number">1.000000e+295</span>, .off = <span class="tok-number">1.865132227937699609e+278</span> },</span>
<span class="line" id="L20"> HP{ .val = <span class="tok-number">1.000000e+294</span>, .off = -<span class="tok-number">6.643646774124810287e+277</span> },</span>
<span class="line" id="L21"> HP{ .val = <span class="tok-number">1.000000e+293</span>, .off = <span class="tok-number">7.537651562646039934e+276</span> },</span>
<span class="line" id="L22"> HP{ .val = <span class="tok-number">1.000000e+292</span>, .off = -<span class="tok-number">1.325659897835741608e+275</span> },</span>
<span class="line" id="L23"> HP{ .val = <span class="tok-number">1.000000e+291</span>, .off = <span class="tok-number">4.213909764965371606e+274</span> },</span>
<span class="line" id="L24"> HP{ .val = <span class="tok-number">1.000000e+290</span>, .off = -<span class="tok-number">6.172783352786715670e+273</span> },</span>
<span class="line" id="L25"> HP{ .val = <span class="tok-number">1.000000e+289</span>, .off = -<span class="tok-number">6.172783352786715670e+272</span> },</span>
<span class="line" id="L26"> HP{ .val = <span class="tok-number">1.000000e+288</span>, .off = -<span class="tok-number">7.630473539575035471e+270</span> },</span>
<span class="line" id="L27"> HP{ .val = <span class="tok-number">1.000000e+287</span>, .off = -<span class="tok-number">7.525217352494018700e+270</span> },</span>
<span class="line" id="L28"> HP{ .val = <span class="tok-number">1.000000e+286</span>, .off = -<span class="tok-number">3.298861103408696612e+269</span> },</span>
<span class="line" id="L29"> HP{ .val = <span class="tok-number">1.000000e+285</span>, .off = <span class="tok-number">1.984084207947955778e+268</span> },</span>
<span class="line" id="L30"> HP{ .val = <span class="tok-number">1.000000e+284</span>, .off = -<span class="tok-number">7.921438250845767591e+267</span> },</span>
<span class="line" id="L31"> HP{ .val = <span class="tok-number">1.000000e+283</span>, .off = <span class="tok-number">4.460464822646386735e+266</span> },</span>
<span class="line" id="L32"> HP{ .val = <span class="tok-number">1.000000e+282</span>, .off = -<span class="tok-number">3.278224598286209647e+265</span> },</span>
<span class="line" id="L33"> HP{ .val = <span class="tok-number">1.000000e+281</span>, .off = -<span class="tok-number">3.278224598286209737e+264</span> },</span>
<span class="line" id="L34"> HP{ .val = <span class="tok-number">1.000000e+280</span>, .off = -<span class="tok-number">3.278224598286209961e+263</span> },</span>
<span class="line" id="L35"> HP{ .val = <span class="tok-number">1.000000e+279</span>, .off = -<span class="tok-number">5.797329227496039232e+262</span> },</span>
<span class="line" id="L36"> HP{ .val = <span class="tok-number">1.000000e+278</span>, .off = <span class="tok-number">3.649313132040821498e+261</span> },</span>
<span class="line" id="L37"> HP{ .val = <span class="tok-number">1.000000e+277</span>, .off = -<span class="tok-number">2.867878510995372374e+259</span> },</span>
<span class="line" id="L38"> HP{ .val = <span class="tok-number">1.000000e+276</span>, .off = -<span class="tok-number">5.206914080024985409e+259</span> },</span>
<span class="line" id="L39"> HP{ .val = <span class="tok-number">1.000000e+275</span>, .off = <span class="tok-number">4.018322599210230404e+258</span> },</span>
<span class="line" id="L40"> HP{ .val = <span class="tok-number">1.000000e+274</span>, .off = <span class="tok-number">7.862171215558236495e+257</span> },</span>
<span class="line" id="L41"> HP{ .val = <span class="tok-number">1.000000e+273</span>, .off = <span class="tok-number">5.459765830340732821e+256</span> },</span>
<span class="line" id="L42"> HP{ .val = <span class="tok-number">1.000000e+272</span>, .off = -<span class="tok-number">6.552261095746788047e+255</span> },</span>
<span class="line" id="L43"> HP{ .val = <span class="tok-number">1.000000e+271</span>, .off = <span class="tok-number">4.709014147460262298e+254</span> },</span>
<span class="line" id="L44"> HP{ .val = <span class="tok-number">1.000000e+270</span>, .off = -<span class="tok-number">4.675381888545612729e+253</span> },</span>
<span class="line" id="L45"> HP{ .val = <span class="tok-number">1.000000e+269</span>, .off = -<span class="tok-number">4.675381888545612892e+252</span> },</span>
<span class="line" id="L46"> HP{ .val = <span class="tok-number">1.000000e+268</span>, .off = <span class="tok-number">2.656177514583977380e+251</span> },</span>
<span class="line" id="L47"> HP{ .val = <span class="tok-number">1.000000e+267</span>, .off = <span class="tok-number">2.656177514583977190e+250</span> },</span>
<span class="line" id="L48"> HP{ .val = <span class="tok-number">1.000000e+266</span>, .off = -<span class="tok-number">3.071603269111014892e+249</span> },</span>
<span class="line" id="L49"> HP{ .val = <span class="tok-number">1.000000e+265</span>, .off = -<span class="tok-number">6.651466258920385440e+248</span> },</span>
<span class="line" id="L50"> HP{ .val = <span class="tok-number">1.000000e+264</span>, .off = -<span class="tok-number">4.414051890289528972e+247</span> },</span>
<span class="line" id="L51"> HP{ .val = <span class="tok-number">1.000000e+263</span>, .off = -<span class="tok-number">1.617283929500958387e+246</span> },</span>
<span class="line" id="L52"> HP{ .val = <span class="tok-number">1.000000e+262</span>, .off = -<span class="tok-number">1.617283929500958241e+245</span> },</span>
<span class="line" id="L53"> HP{ .val = <span class="tok-number">1.000000e+261</span>, .off = <span class="tok-number">7.122615947963323868e+244</span> },</span>
<span class="line" id="L54"> HP{ .val = <span class="tok-number">1.000000e+260</span>, .off = -<span class="tok-number">6.533477610574617382e+243</span> },</span>
<span class="line" id="L55"> HP{ .val = <span class="tok-number">1.000000e+259</span>, .off = <span class="tok-number">7.122615947963323982e+242</span> },</span>
<span class="line" id="L56"> HP{ .val = <span class="tok-number">1.000000e+258</span>, .off = -<span class="tok-number">5.679971763165996225e+241</span> },</span>
<span class="line" id="L57"> HP{ .val = <span class="tok-number">1.000000e+257</span>, .off = -<span class="tok-number">3.012765990014054219e+240</span> },</span>
<span class="line" id="L58"> HP{ .val = <span class="tok-number">1.000000e+256</span>, .off = -<span class="tok-number">3.012765990014054219e+239</span> },</span>
<span class="line" id="L59"> HP{ .val = <span class="tok-number">1.000000e+255</span>, .off = <span class="tok-number">1.154743030535854616e+238</span> },</span>
<span class="line" id="L60"> HP{ .val = <span class="tok-number">1.000000e+254</span>, .off = <span class="tok-number">6.364129306223240767e+237</span> },</span>
<span class="line" id="L61"> HP{ .val = <span class="tok-number">1.000000e+253</span>, .off = <span class="tok-number">6.364129306223241129e+236</span> },</span>
<span class="line" id="L62"> HP{ .val = <span class="tok-number">1.000000e+252</span>, .off = -<span class="tok-number">9.915202805299840595e+235</span> },</span>
<span class="line" id="L63"> HP{ .val = <span class="tok-number">1.000000e+251</span>, .off = -<span class="tok-number">4.827911520448877980e+234</span> },</span>
<span class="line" id="L64"> HP{ .val = <span class="tok-number">1.000000e+250</span>, .off = <span class="tok-number">7.890316691678530146e+233</span> },</span>
<span class="line" id="L65"> HP{ .val = <span class="tok-number">1.000000e+249</span>, .off = <span class="tok-number">7.890316691678529484e+232</span> },</span>
<span class="line" id="L66"> HP{ .val = <span class="tok-number">1.000000e+248</span>, .off = -<span class="tok-number">4.529828046727141859e+231</span> },</span>
<span class="line" id="L67"> HP{ .val = <span class="tok-number">1.000000e+247</span>, .off = <span class="tok-number">4.785280507077111924e+230</span> },</span>
<span class="line" id="L68"> HP{ .val = <span class="tok-number">1.000000e+246</span>, .off = -<span class="tok-number">6.858605185178205305e+229</span> },</span>
<span class="line" id="L69"> HP{ .val = <span class="tok-number">1.000000e+245</span>, .off = -<span class="tok-number">4.432795665958347728e+228</span> },</span>
<span class="line" id="L70"> HP{ .val = <span class="tok-number">1.000000e+244</span>, .off = -<span class="tok-number">7.465057564983169531e+227</span> },</span>
<span class="line" id="L71"> HP{ .val = <span class="tok-number">1.000000e+243</span>, .off = -<span class="tok-number">7.465057564983169741e+226</span> },</span>
<span class="line" id="L72"> HP{ .val = <span class="tok-number">1.000000e+242</span>, .off = -<span class="tok-number">5.096102956370027445e+225</span> },</span>
<span class="line" id="L73"> HP{ .val = <span class="tok-number">1.000000e+241</span>, .off = -<span class="tok-number">5.096102956370026952e+224</span> },</span>
<span class="line" id="L74"> HP{ .val = <span class="tok-number">1.000000e+240</span>, .off = -<span class="tok-number">1.394611380411992474e+223</span> },</span>
<span class="line" id="L75"> HP{ .val = <span class="tok-number">1.000000e+239</span>, .off = <span class="tok-number">9.188208545617793960e+221</span> },</span>
<span class="line" id="L76"> HP{ .val = <span class="tok-number">1.000000e+238</span>, .off = -<span class="tok-number">4.864759732872650359e+221</span> },</span>
<span class="line" id="L77"> HP{ .val = <span class="tok-number">1.000000e+237</span>, .off = <span class="tok-number">5.979453868566904629e+220</span> },</span>
<span class="line" id="L78"> HP{ .val = <span class="tok-number">1.000000e+236</span>, .off = -<span class="tok-number">5.316601966265964857e+219</span> },</span>
<span class="line" id="L79"> HP{ .val = <span class="tok-number">1.000000e+235</span>, .off = -<span class="tok-number">5.316601966265964701e+218</span> },</span>
<span class="line" id="L80"> HP{ .val = <span class="tok-number">1.000000e+234</span>, .off = -<span class="tok-number">1.786584517880693123e+217</span> },</span>
<span class="line" id="L81"> HP{ .val = <span class="tok-number">1.000000e+233</span>, .off = <span class="tok-number">2.625937292600896716e+216</span> },</span>
<span class="line" id="L82"> HP{ .val = <span class="tok-number">1.000000e+232</span>, .off = -<span class="tok-number">5.647541102052084079e+215</span> },</span>
<span class="line" id="L83"> HP{ .val = <span class="tok-number">1.000000e+231</span>, .off = -<span class="tok-number">5.647541102052083888e+214</span> },</span>
<span class="line" id="L84"> HP{ .val = <span class="tok-number">1.000000e+230</span>, .off = -<span class="tok-number">9.956644432600511943e+213</span> },</span>
<span class="line" id="L85"> HP{ .val = <span class="tok-number">1.000000e+229</span>, .off = <span class="tok-number">8.161138937705571862e+211</span> },</span>
<span class="line" id="L86"> HP{ .val = <span class="tok-number">1.000000e+228</span>, .off = <span class="tok-number">7.549087847752475275e+211</span> },</span>
<span class="line" id="L87"> HP{ .val = <span class="tok-number">1.000000e+227</span>, .off = -<span class="tok-number">9.283347037202319948e+210</span> },</span>
<span class="line" id="L88"> HP{ .val = <span class="tok-number">1.000000e+226</span>, .off = <span class="tok-number">3.866992716668613820e+209</span> },</span>
<span class="line" id="L89"> HP{ .val = <span class="tok-number">1.000000e+225</span>, .off = <span class="tok-number">7.154577655136347262e+208</span> },</span>
<span class="line" id="L90"> HP{ .val = <span class="tok-number">1.000000e+224</span>, .off = <span class="tok-number">3.045096482051680688e+207</span> },</span>
<span class="line" id="L91"> HP{ .val = <span class="tok-number">1.000000e+223</span>, .off = -<span class="tok-number">4.660180717482069567e+206</span> },</span>
<span class="line" id="L92"> HP{ .val = <span class="tok-number">1.000000e+222</span>, .off = -<span class="tok-number">4.660180717482070101e+205</span> },</span>
<span class="line" id="L93"> HP{ .val = <span class="tok-number">1.000000e+221</span>, .off = -<span class="tok-number">4.660180717482069544e+204</span> },</span>
<span class="line" id="L94"> HP{ .val = <span class="tok-number">1.000000e+220</span>, .off = <span class="tok-number">3.562757926310489022e+202</span> },</span>
<span class="line" id="L95"> HP{ .val = <span class="tok-number">1.000000e+219</span>, .off = <span class="tok-number">3.491561111451748149e+202</span> },</span>
<span class="line" id="L96"> HP{ .val = <span class="tok-number">1.000000e+218</span>, .off = -<span class="tok-number">8.265758834125874135e+201</span> },</span>
<span class="line" id="L97"> HP{ .val = <span class="tok-number">1.000000e+217</span>, .off = <span class="tok-number">3.981449442517482365e+200</span> },</span>
<span class="line" id="L98"> HP{ .val = <span class="tok-number">1.000000e+216</span>, .off = -<span class="tok-number">2.142154695804195936e+199</span> },</span>
<span class="line" id="L99"> HP{ .val = <span class="tok-number">1.000000e+215</span>, .off = <span class="tok-number">9.339603063548950188e+198</span> },</span>
<span class="line" id="L100"> HP{ .val = <span class="tok-number">1.000000e+214</span>, .off = <span class="tok-number">4.555537330485139746e+197</span> },</span>
<span class="line" id="L101"> HP{ .val = <span class="tok-number">1.000000e+213</span>, .off = <span class="tok-number">1.565496247320257804e+196</span> },</span>
<span class="line" id="L102"> HP{ .val = <span class="tok-number">1.000000e+212</span>, .off = <span class="tok-number">9.040598955232462036e+195</span> },</span>
<span class="line" id="L103"> HP{ .val = <span class="tok-number">1.000000e+211</span>, .off = <span class="tok-number">4.368659762787334780e+194</span> },</span>
<span class="line" id="L104"> HP{ .val = <span class="tok-number">1.000000e+210</span>, .off = <span class="tok-number">7.288621758065539072e+193</span> },</span>
<span class="line" id="L105"> HP{ .val = <span class="tok-number">1.000000e+209</span>, .off = -<span class="tok-number">7.311188218325485628e+192</span> },</span>
<span class="line" id="L106"> HP{ .val = <span class="tok-number">1.000000e+208</span>, .off = <span class="tok-number">1.813693016918905189e+191</span> },</span>
<span class="line" id="L107"> HP{ .val = <span class="tok-number">1.000000e+207</span>, .off = -<span class="tok-number">3.889357755108838992e+190</span> },</span>
<span class="line" id="L108"> HP{ .val = <span class="tok-number">1.000000e+206</span>, .off = -<span class="tok-number">3.889357755108838992e+189</span> },</span>
<span class="line" id="L109"> HP{ .val = <span class="tok-number">1.000000e+205</span>, .off = -<span class="tok-number">1.661603547285501360e+188</span> },</span>
<span class="line" id="L110"> HP{ .val = <span class="tok-number">1.000000e+204</span>, .off = <span class="tok-number">1.123089212493670643e+187</span> },</span>
<span class="line" id="L111"> HP{ .val = <span class="tok-number">1.000000e+203</span>, .off = <span class="tok-number">1.123089212493670643e+186</span> },</span>
<span class="line" id="L112"> HP{ .val = <span class="tok-number">1.000000e+202</span>, .off = <span class="tok-number">9.825254086803583029e+185</span> },</span>
<span class="line" id="L113"> HP{ .val = <span class="tok-number">1.000000e+201</span>, .off = -<span class="tok-number">3.771878529305654999e+184</span> },</span>
<span class="line" id="L114"> HP{ .val = <span class="tok-number">1.000000e+200</span>, .off = <span class="tok-number">3.026687778748963675e+183</span> },</span>
<span class="line" id="L115"> HP{ .val = <span class="tok-number">1.000000e+199</span>, .off = -<span class="tok-number">9.720624048853446693e+182</span> },</span>
<span class="line" id="L116"> HP{ .val = <span class="tok-number">1.000000e+198</span>, .off = -<span class="tok-number">1.753554156601940139e+181</span> },</span>
<span class="line" id="L117"> HP{ .val = <span class="tok-number">1.000000e+197</span>, .off = <span class="tok-number">4.885670753607648963e+180</span> },</span>
<span class="line" id="L118"> HP{ .val = <span class="tok-number">1.000000e+196</span>, .off = <span class="tok-number">4.885670753607648963e+179</span> },</span>
<span class="line" id="L119"> HP{ .val = <span class="tok-number">1.000000e+195</span>, .off = <span class="tok-number">2.292223523057028076e+178</span> },</span>
<span class="line" id="L120"> HP{ .val = <span class="tok-number">1.000000e+194</span>, .off = <span class="tok-number">5.534032561245303825e+177</span> },</span>
<span class="line" id="L121"> HP{ .val = <span class="tok-number">1.000000e+193</span>, .off = -<span class="tok-number">6.622751331960730683e+176</span> },</span>
<span class="line" id="L122"> HP{ .val = <span class="tok-number">1.000000e+192</span>, .off = -<span class="tok-number">4.090088020876139692e+175</span> },</span>
<span class="line" id="L123"> HP{ .val = <span class="tok-number">1.000000e+191</span>, .off = -<span class="tok-number">7.255917159731877552e+174</span> },</span>
<span class="line" id="L124"> HP{ .val = <span class="tok-number">1.000000e+190</span>, .off = -<span class="tok-number">7.255917159731877992e+173</span> },</span>
<span class="line" id="L125"> HP{ .val = <span class="tok-number">1.000000e+189</span>, .off = -<span class="tok-number">2.309309130269787104e+172</span> },</span>
<span class="line" id="L126"> HP{ .val = <span class="tok-number">1.000000e+188</span>, .off = -<span class="tok-number">2.309309130269787019e+171</span> },</span>
<span class="line" id="L127"> HP{ .val = <span class="tok-number">1.000000e+187</span>, .off = <span class="tok-number">9.284303438781988230e+170</span> },</span>
<span class="line" id="L128"> HP{ .val = <span class="tok-number">1.000000e+186</span>, .off = <span class="tok-number">2.038295583124628364e+169</span> },</span>
<span class="line" id="L129"> HP{ .val = <span class="tok-number">1.000000e+185</span>, .off = <span class="tok-number">2.038295583124628532e+168</span> },</span>
<span class="line" id="L130"> HP{ .val = <span class="tok-number">1.000000e+184</span>, .off = -<span class="tok-number">1.735666841696912925e+167</span> },</span>
<span class="line" id="L131"> HP{ .val = <span class="tok-number">1.000000e+183</span>, .off = <span class="tok-number">5.340512704843477241e+166</span> },</span>
<span class="line" id="L132"> HP{ .val = <span class="tok-number">1.000000e+182</span>, .off = -<span class="tok-number">6.453119872723839321e+165</span> },</span>
<span class="line" id="L133"> HP{ .val = <span class="tok-number">1.000000e+181</span>, .off = <span class="tok-number">8.288920849235306587e+164</span> },</span>
<span class="line" id="L134"> HP{ .val = <span class="tok-number">1.000000e+180</span>, .off = -<span class="tok-number">9.248546019891598293e+162</span> },</span>
<span class="line" id="L135"> HP{ .val = <span class="tok-number">1.000000e+179</span>, .off = <span class="tok-number">1.954450226518486016e+162</span> },</span>
<span class="line" id="L136"> HP{ .val = <span class="tok-number">1.000000e+178</span>, .off = -<span class="tok-number">5.243811844750628197e+161</span> },</span>
<span class="line" id="L137"> HP{ .val = <span class="tok-number">1.000000e+177</span>, .off = -<span class="tok-number">7.448980502074320639e+159</span> },</span>
<span class="line" id="L138"> HP{ .val = <span class="tok-number">1.000000e+176</span>, .off = -<span class="tok-number">7.448980502074319858e+158</span> },</span>
<span class="line" id="L139"> HP{ .val = <span class="tok-number">1.000000e+175</span>, .off = <span class="tok-number">6.284654753766312753e+158</span> },</span>
<span class="line" id="L140"> HP{ .val = <span class="tok-number">1.000000e+174</span>, .off = -<span class="tok-number">6.895756753684458388e+157</span> },</span>
<span class="line" id="L141"> HP{ .val = <span class="tok-number">1.000000e+173</span>, .off = -<span class="tok-number">1.403918625579970616e+156</span> },</span>
<span class="line" id="L142"> HP{ .val = <span class="tok-number">1.000000e+172</span>, .off = -<span class="tok-number">8.268716285710580522e+155</span> },</span>
<span class="line" id="L143"> HP{ .val = <span class="tok-number">1.000000e+171</span>, .off = <span class="tok-number">4.602779327034313170e+154</span> },</span>
<span class="line" id="L144"> HP{ .val = <span class="tok-number">1.000000e+170</span>, .off = -<span class="tok-number">3.441905430931244940e+153</span> },</span>
<span class="line" id="L145"> HP{ .val = <span class="tok-number">1.000000e+169</span>, .off = <span class="tok-number">6.613950516525702884e+152</span> },</span>
<span class="line" id="L146"> HP{ .val = <span class="tok-number">1.000000e+168</span>, .off = <span class="tok-number">6.613950516525702652e+151</span> },</span>
<span class="line" id="L147"> HP{ .val = <span class="tok-number">1.000000e+167</span>, .off = -<span class="tok-number">3.860899428741951187e+150</span> },</span>
<span class="line" id="L148"> HP{ .val = <span class="tok-number">1.000000e+166</span>, .off = <span class="tok-number">5.959272394946474605e+149</span> },</span>
<span class="line" id="L149"> HP{ .val = <span class="tok-number">1.000000e+165</span>, .off = <span class="tok-number">1.005101065481665103e+149</span> },</span>
<span class="line" id="L150"> HP{ .val = <span class="tok-number">1.000000e+164</span>, .off = -<span class="tok-number">1.783349948587918355e+146</span> },</span>
<span class="line" id="L151"> HP{ .val = <span class="tok-number">1.000000e+163</span>, .off = <span class="tok-number">6.215006036188360099e+146</span> },</span>
<span class="line" id="L152"> HP{ .val = <span class="tok-number">1.000000e+162</span>, .off = <span class="tok-number">6.215006036188360099e+145</span> },</span>
<span class="line" id="L153"> HP{ .val = <span class="tok-number">1.000000e+161</span>, .off = -<span class="tok-number">3.774589324822814903e+144</span> },</span>
<span class="line" id="L154"> HP{ .val = <span class="tok-number">1.000000e+160</span>, .off = -<span class="tok-number">6.528407745068226929e+142</span> },</span>
<span class="line" id="L155"> HP{ .val = <span class="tok-number">1.000000e+159</span>, .off = <span class="tok-number">7.151530601283157561e+142</span> },</span>
<span class="line" id="L156"> HP{ .val = <span class="tok-number">1.000000e+158</span>, .off = <span class="tok-number">4.712664546348788765e+141</span> },</span>
<span class="line" id="L157"> HP{ .val = <span class="tok-number">1.000000e+157</span>, .off = <span class="tok-number">1.664081977680827856e+140</span> },</span>
<span class="line" id="L158"> HP{ .val = <span class="tok-number">1.000000e+156</span>, .off = <span class="tok-number">1.664081977680827750e+139</span> },</span>
<span class="line" id="L159"> HP{ .val = <span class="tok-number">1.000000e+155</span>, .off = -<span class="tok-number">7.176231540910168265e+137</span> },</span>
<span class="line" id="L160"> HP{ .val = <span class="tok-number">1.000000e+154</span>, .off = -<span class="tok-number">3.694754568805822650e+137</span> },</span>
<span class="line" id="L161"> HP{ .val = <span class="tok-number">1.000000e+153</span>, .off = <span class="tok-number">2.665969958768462622e+134</span> },</span>
<span class="line" id="L162"> HP{ .val = <span class="tok-number">1.000000e+152</span>, .off = -<span class="tok-number">4.625108135904199522e+135</span> },</span>
<span class="line" id="L163"> HP{ .val = <span class="tok-number">1.000000e+151</span>, .off = -<span class="tok-number">1.717753238721771919e+134</span> },</span>
<span class="line" id="L164"> HP{ .val = <span class="tok-number">1.000000e+150</span>, .off = <span class="tok-number">1.916440382756262433e+133</span> },</span>
<span class="line" id="L165"> HP{ .val = <span class="tok-number">1.000000e+149</span>, .off = -<span class="tok-number">4.897672657515052040e+132</span> },</span>
<span class="line" id="L166"> HP{ .val = <span class="tok-number">1.000000e+148</span>, .off = -<span class="tok-number">4.897672657515052198e+131</span> },</span>
<span class="line" id="L167"> HP{ .val = <span class="tok-number">1.000000e+147</span>, .off = <span class="tok-number">2.200361759434233991e+130</span> },</span>
<span class="line" id="L168"> HP{ .val = <span class="tok-number">1.000000e+146</span>, .off = <span class="tok-number">6.636633270027537273e+129</span> },</span>
<span class="line" id="L169"> HP{ .val = <span class="tok-number">1.000000e+145</span>, .off = <span class="tok-number">1.091293881785907977e+128</span> },</span>
<span class="line" id="L170"> HP{ .val = <span class="tok-number">1.000000e+144</span>, .off = -<span class="tok-number">2.374543235865110597e+127</span> },</span>
<span class="line" id="L171"> HP{ .val = <span class="tok-number">1.000000e+143</span>, .off = -<span class="tok-number">2.374543235865110537e+126</span> },</span>
<span class="line" id="L172"> HP{ .val = <span class="tok-number">1.000000e+142</span>, .off = -<span class="tok-number">5.082228484029969099e+125</span> },</span>
<span class="line" id="L173"> HP{ .val = <span class="tok-number">1.000000e+141</span>, .off = -<span class="tok-number">1.697621923823895943e+124</span> },</span>
<span class="line" id="L174"> HP{ .val = <span class="tok-number">1.000000e+140</span>, .off = -<span class="tok-number">5.928380124081487212e+123</span> },</span>
<span class="line" id="L175"> HP{ .val = <span class="tok-number">1.000000e+139</span>, .off = -<span class="tok-number">3.284156248920492522e+122</span> },</span>
<span class="line" id="L176"> HP{ .val = <span class="tok-number">1.000000e+138</span>, .off = -<span class="tok-number">3.284156248920492706e+121</span> },</span>
<span class="line" id="L177"> HP{ .val = <span class="tok-number">1.000000e+137</span>, .off = -<span class="tok-number">3.284156248920492476e+120</span> },</span>
<span class="line" id="L178"> HP{ .val = <span class="tok-number">1.000000e+136</span>, .off = -<span class="tok-number">5.866406127007401066e+119</span> },</span>
<span class="line" id="L179"> HP{ .val = <span class="tok-number">1.000000e+135</span>, .off = <span class="tok-number">3.817030915818506056e+118</span> },</span>
<span class="line" id="L180"> HP{ .val = <span class="tok-number">1.000000e+134</span>, .off = <span class="tok-number">7.851796350329300951e+117</span> },</span>
<span class="line" id="L181"> HP{ .val = <span class="tok-number">1.000000e+133</span>, .off = -<span class="tok-number">2.235117235947686077e+116</span> },</span>
<span class="line" id="L182"> HP{ .val = <span class="tok-number">1.000000e+132</span>, .off = <span class="tok-number">9.170432597638723691e+114</span> },</span>
<span class="line" id="L183"> HP{ .val = <span class="tok-number">1.000000e+131</span>, .off = <span class="tok-number">8.797444499042767883e+114</span> },</span>
<span class="line" id="L184"> HP{ .val = <span class="tok-number">1.000000e+130</span>, .off = -<span class="tok-number">5.978307824605161274e+113</span> },</span>
<span class="line" id="L185"> HP{ .val = <span class="tok-number">1.000000e+129</span>, .off = <span class="tok-number">1.782556435814758516e+111</span> },</span>
<span class="line" id="L186"> HP{ .val = <span class="tok-number">1.000000e+128</span>, .off = -<span class="tok-number">7.517448691651820362e+111</span> },</span>
<span class="line" id="L187"> HP{ .val = <span class="tok-number">1.000000e+127</span>, .off = <span class="tok-number">4.507089332150205498e+110</span> },</span>
<span class="line" id="L188"> HP{ .val = <span class="tok-number">1.000000e+126</span>, .off = <span class="tok-number">7.513223838100711695e+109</span> },</span>
<span class="line" id="L189"> HP{ .val = <span class="tok-number">1.000000e+125</span>, .off = <span class="tok-number">7.513223838100712113e+108</span> },</span>
<span class="line" id="L190"> HP{ .val = <span class="tok-number">1.000000e+124</span>, .off = <span class="tok-number">5.164681255326878494e+107</span> },</span>
<span class="line" id="L191"> HP{ .val = <span class="tok-number">1.000000e+123</span>, .off = <span class="tok-number">2.229003026859587122e+106</span> },</span>
<span class="line" id="L192"> HP{ .val = <span class="tok-number">1.000000e+122</span>, .off = -<span class="tok-number">1.440594758724527399e+105</span> },</span>
<span class="line" id="L193"> HP{ .val = <span class="tok-number">1.000000e+121</span>, .off = -<span class="tok-number">3.734093374714598783e+104</span> },</span>
<span class="line" id="L194"> HP{ .val = <span class="tok-number">1.000000e+120</span>, .off = <span class="tok-number">1.999653165260579757e+103</span> },</span>
<span class="line" id="L195"> HP{ .val = <span class="tok-number">1.000000e+119</span>, .off = <span class="tok-number">5.583244752745066693e+102</span> },</span>
<span class="line" id="L196"> HP{ .val = <span class="tok-number">1.000000e+118</span>, .off = <span class="tok-number">3.343500010567262234e+101</span> },</span>
<span class="line" id="L197"> HP{ .val = <span class="tok-number">1.000000e+117</span>, .off = -<span class="tok-number">5.055542772599503556e+100</span> },</span>
<span class="line" id="L198"> HP{ .val = <span class="tok-number">1.000000e+116</span>, .off = -<span class="tok-number">1.555941612946684331e+99</span> },</span>
<span class="line" id="L199"> HP{ .val = <span class="tok-number">1.000000e+115</span>, .off = -<span class="tok-number">1.555941612946684331e+98</span> },</span>
<span class="line" id="L200"> HP{ .val = <span class="tok-number">1.000000e+114</span>, .off = -<span class="tok-number">1.555941612946684293e+97</span> },</span>
<span class="line" id="L201"> HP{ .val = <span class="tok-number">1.000000e+113</span>, .off = -<span class="tok-number">1.555941612946684246e+96</span> },</span>
<span class="line" id="L202"> HP{ .val = <span class="tok-number">1.000000e+112</span>, .off = <span class="tok-number">6.988006530736955847e+95</span> },</span>
<span class="line" id="L203"> HP{ .val = <span class="tok-number">1.000000e+111</span>, .off = <span class="tok-number">4.318022735835818244e+94</span> },</span>
<span class="line" id="L204"> HP{ .val = <span class="tok-number">1.000000e+110</span>, .off = -<span class="tok-number">2.356936751417025578e+93</span> },</span>
<span class="line" id="L205"> HP{ .val = <span class="tok-number">1.000000e+109</span>, .off = <span class="tok-number">1.814912928116001926e+92</span> },</span>
<span class="line" id="L206"> HP{ .val = <span class="tok-number">1.000000e+108</span>, .off = -<span class="tok-number">3.399899171300282744e+91</span> },</span>
<span class="line" id="L207"> HP{ .val = <span class="tok-number">1.000000e+107</span>, .off = <span class="tok-number">3.118615952970072913e+90</span> },</span>
<span class="line" id="L208"> HP{ .val = <span class="tok-number">1.000000e+106</span>, .off = -<span class="tok-number">9.103599905036843605e+89</span> },</span>
<span class="line" id="L209"> HP{ .val = <span class="tok-number">1.000000e+105</span>, .off = <span class="tok-number">6.174169917471802325e+88</span> },</span>
<span class="line" id="L210"> HP{ .val = <span class="tok-number">1.000000e+104</span>, .off = -<span class="tok-number">1.915675085734668657e+86</span> },</span>
<span class="line" id="L211"> HP{ .val = <span class="tok-number">1.000000e+103</span>, .off = -<span class="tok-number">1.915675085734668864e+85</span> },</span>
<span class="line" id="L212"> HP{ .val = <span class="tok-number">1.000000e+102</span>, .off = <span class="tok-number">2.295048673475466221e+85</span> },</span>
<span class="line" id="L213"> HP{ .val = <span class="tok-number">1.000000e+101</span>, .off = <span class="tok-number">2.295048673475466135e+84</span> },</span>
<span class="line" id="L214"> HP{ .val = <span class="tok-number">1.000000e+100</span>, .off = -<span class="tok-number">1.590289110975991792e+83</span> },</span>
<span class="line" id="L215"> HP{ .val = <span class="tok-number">1.000000e+99</span>, .off = <span class="tok-number">3.266383119588331155e+82</span> },</span>
<span class="line" id="L216"> HP{ .val = <span class="tok-number">1.000000e+98</span>, .off = <span class="tok-number">2.309629754856292029e+80</span> },</span>
<span class="line" id="L217"> HP{ .val = <span class="tok-number">1.000000e+97</span>, .off = -<span class="tok-number">7.357587384771124533e+80</span> },</span>
<span class="line" id="L218"> HP{ .val = <span class="tok-number">1.000000e+96</span>, .off = -<span class="tok-number">4.986165397190889509e+79</span> },</span>
<span class="line" id="L219"> HP{ .val = <span class="tok-number">1.000000e+95</span>, .off = -<span class="tok-number">2.021887912715594741e+78</span> },</span>
<span class="line" id="L220"> HP{ .val = <span class="tok-number">1.000000e+94</span>, .off = -<span class="tok-number">2.021887912715594638e+77</span> },</span>
<span class="line" id="L221"> HP{ .val = <span class="tok-number">1.000000e+93</span>, .off = -<span class="tok-number">4.337729697461918675e+76</span> },</span>
<span class="line" id="L222"> HP{ .val = <span class="tok-number">1.000000e+92</span>, .off = -<span class="tok-number">4.337729697461918997e+75</span> },</span>
<span class="line" id="L223"> HP{ .val = <span class="tok-number">1.000000e+91</span>, .off = -<span class="tok-number">7.956232486128049702e+74</span> },</span>
<span class="line" id="L224"> HP{ .val = <span class="tok-number">1.000000e+90</span>, .off = <span class="tok-number">3.351588728453609882e+73</span> },</span>
<span class="line" id="L225"> HP{ .val = <span class="tok-number">1.000000e+89</span>, .off = <span class="tok-number">5.246334248081951113e+71</span> },</span>
<span class="line" id="L226"> HP{ .val = <span class="tok-number">1.000000e+88</span>, .off = <span class="tok-number">4.058327554364963672e+71</span> },</span>
<span class="line" id="L227"> HP{ .val = <span class="tok-number">1.000000e+87</span>, .off = <span class="tok-number">4.058327554364963918e+70</span> },</span>
<span class="line" id="L228"> HP{ .val = <span class="tok-number">1.000000e+86</span>, .off = -<span class="tok-number">1.463069523067487266e+69</span> },</span>
<span class="line" id="L229"> HP{ .val = <span class="tok-number">1.000000e+85</span>, .off = -<span class="tok-number">1.463069523067487314e+68</span> },</span>
<span class="line" id="L230"> HP{ .val = <span class="tok-number">1.000000e+84</span>, .off = -<span class="tok-number">5.776660989811589441e+67</span> },</span>
<span class="line" id="L231"> HP{ .val = <span class="tok-number">1.000000e+83</span>, .off = -<span class="tok-number">3.080666323096525761e+66</span> },</span>
<span class="line" id="L232"> HP{ .val = <span class="tok-number">1.000000e+82</span>, .off = <span class="tok-number">3.659320343691134468e+65</span> },</span>
<span class="line" id="L233"> HP{ .val = <span class="tok-number">1.000000e+81</span>, .off = <span class="tok-number">7.871812010433421235e+64</span> },</span>
<span class="line" id="L234"> HP{ .val = <span class="tok-number">1.000000e+80</span>, .off = -<span class="tok-number">2.660986470836727449e+61</span> },</span>
<span class="line" id="L235"> HP{ .val = <span class="tok-number">1.000000e+79</span>, .off = <span class="tok-number">3.264399249934044627e+62</span> },</span>
<span class="line" id="L236"> HP{ .val = <span class="tok-number">1.000000e+78</span>, .off = -<span class="tok-number">8.493621433689703070e+60</span> },</span>
<span class="line" id="L237"> HP{ .val = <span class="tok-number">1.000000e+77</span>, .off = <span class="tok-number">1.721738727445414063e+60</span> },</span>
<span class="line" id="L238"> HP{ .val = <span class="tok-number">1.000000e+76</span>, .off = -<span class="tok-number">4.706013449590547218e+59</span> },</span>
<span class="line" id="L239"> HP{ .val = <span class="tok-number">1.000000e+75</span>, .off = <span class="tok-number">7.346021882351880518e+58</span> },</span>
<span class="line" id="L240"> HP{ .val = <span class="tok-number">1.000000e+74</span>, .off = <span class="tok-number">4.835181188197207515e+57</span> },</span>
<span class="line" id="L241"> HP{ .val = <span class="tok-number">1.000000e+73</span>, .off = <span class="tok-number">1.696630320503867482e+56</span> },</span>
<span class="line" id="L242"> HP{ .val = <span class="tok-number">1.000000e+72</span>, .off = <span class="tok-number">5.619818905120542959e+55</span> },</span>
<span class="line" id="L243"> HP{ .val = <span class="tok-number">1.000000e+71</span>, .off = -<span class="tok-number">4.188152556421145598e+54</span> },</span>
<span class="line" id="L244"> HP{ .val = <span class="tok-number">1.000000e+70</span>, .off = -<span class="tok-number">7.253143638152923145e+53</span> },</span>
<span class="line" id="L245"> HP{ .val = <span class="tok-number">1.000000e+69</span>, .off = -<span class="tok-number">7.253143638152923145e+52</span> },</span>
<span class="line" id="L246"> HP{ .val = <span class="tok-number">1.000000e+68</span>, .off = <span class="tok-number">4.719477774861832896e+51</span> },</span>
<span class="line" id="L247"> HP{ .val = <span class="tok-number">1.000000e+67</span>, .off = <span class="tok-number">1.726322421608144052e+50</span> },</span>
<span class="line" id="L248"> HP{ .val = <span class="tok-number">1.000000e+66</span>, .off = <span class="tok-number">5.467766613175255107e+49</span> },</span>
<span class="line" id="L249"> HP{ .val = <span class="tok-number">1.000000e+65</span>, .off = <span class="tok-number">7.909613737163661911e+47</span> },</span>
<span class="line" id="L250"> HP{ .val = <span class="tok-number">1.000000e+64</span>, .off = -<span class="tok-number">2.132041900945439564e+47</span> },</span>
<span class="line" id="L251"> HP{ .val = <span class="tok-number">1.000000e+63</span>, .off = -<span class="tok-number">5.785795994272697265e+46</span> },</span>
<span class="line" id="L252"> HP{ .val = <span class="tok-number">1.000000e+62</span>, .off = -<span class="tok-number">3.502199685943161329e+45</span> },</span>
<span class="line" id="L253"> HP{ .val = <span class="tok-number">1.000000e+61</span>, .off = <span class="tok-number">5.061286470292598274e+44</span> },</span>
<span class="line" id="L254"> HP{ .val = <span class="tok-number">1.000000e+60</span>, .off = <span class="tok-number">5.061286470292598472e+43</span> },</span>
<span class="line" id="L255"> HP{ .val = <span class="tok-number">1.000000e+59</span>, .off = <span class="tok-number">2.831211950439536034e+42</span> },</span>
<span class="line" id="L256"> HP{ .val = <span class="tok-number">1.000000e+58</span>, .off = <span class="tok-number">5.618805100255863927e+41</span> },</span>
<span class="line" id="L257"> HP{ .val = <span class="tok-number">1.000000e+57</span>, .off = -<span class="tok-number">4.834669211555366251e+40</span> },</span>
<span class="line" id="L258"> HP{ .val = <span class="tok-number">1.000000e+56</span>, .off = -<span class="tok-number">9.190283508143378583e+39</span> },</span>
<span class="line" id="L259"> HP{ .val = <span class="tok-number">1.000000e+55</span>, .off = -<span class="tok-number">1.023506702040855158e+38</span> },</span>
<span class="line" id="L260"> HP{ .val = <span class="tok-number">1.000000e+54</span>, .off = -<span class="tok-number">7.829154040459624616e+37</span> },</span>
<span class="line" id="L261"> HP{ .val = <span class="tok-number">1.000000e+53</span>, .off = <span class="tok-number">6.779051325638372659e+35</span> },</span>
<span class="line" id="L262"> HP{ .val = <span class="tok-number">1.000000e+52</span>, .off = <span class="tok-number">6.779051325638372290e+34</span> },</span>
<span class="line" id="L263"> HP{ .val = <span class="tok-number">1.000000e+51</span>, .off = <span class="tok-number">6.779051325638371598e+33</span> },</span>
<span class="line" id="L264"> HP{ .val = <span class="tok-number">1.000000e+50</span>, .off = -<span class="tok-number">7.629769841091887392e+33</span> },</span>
<span class="line" id="L265"> HP{ .val = <span class="tok-number">1.000000e+49</span>, .off = <span class="tok-number">5.350972305245182400e+32</span> },</span>
<span class="line" id="L266"> HP{ .val = <span class="tok-number">1.000000e+48</span>, .off = -<span class="tok-number">4.384584304507619764e+31</span> },</span>
<span class="line" id="L267"> HP{ .val = <span class="tok-number">1.000000e+47</span>, .off = -<span class="tok-number">4.384584304507619876e+30</span> },</span>
<span class="line" id="L268"> HP{ .val = <span class="tok-number">1.000000e+46</span>, .off = <span class="tok-number">6.860180964052978705e+28</span> },</span>
<span class="line" id="L269"> HP{ .val = <span class="tok-number">1.000000e+45</span>, .off = <span class="tok-number">7.024271097546444878e+28</span> },</span>
<span class="line" id="L270"> HP{ .val = <span class="tok-number">1.000000e+44</span>, .off = -<span class="tok-number">8.821361405306422641e+27</span> },</span>
<span class="line" id="L271"> HP{ .val = <span class="tok-number">1.000000e+43</span>, .off = -<span class="tok-number">1.393721169594140991e+26</span> },</span>
<span class="line" id="L272"> HP{ .val = <span class="tok-number">1.000000e+42</span>, .off = -<span class="tok-number">4.488571267807591679e+25</span> },</span>
<span class="line" id="L273"> HP{ .val = <span class="tok-number">1.000000e+41</span>, .off = -<span class="tok-number">6.200086450407783195e+23</span> },</span>
<span class="line" id="L274"> HP{ .val = <span class="tok-number">1.000000e+40</span>, .off = -<span class="tok-number">3.037860284270036669e+23</span> },</span>
<span class="line" id="L275"> HP{ .val = <span class="tok-number">1.000000e+39</span>, .off = <span class="tok-number">6.029083362839682141e+22</span> },</span>
<span class="line" id="L276"> HP{ .val = <span class="tok-number">1.000000e+38</span>, .off = <span class="tok-number">2.251190176543965970e+21</span> },</span>
<span class="line" id="L277"> HP{ .val = <span class="tok-number">1.000000e+37</span>, .off = <span class="tok-number">4.612373417978788577e+20</span> },</span>
<span class="line" id="L278"> HP{ .val = <span class="tok-number">1.000000e+36</span>, .off = -<span class="tok-number">4.242063737401796198e+19</span> },</span>
<span class="line" id="L279"> HP{ .val = <span class="tok-number">1.000000e+35</span>, .off = <span class="tok-number">3.136633892082024448e+18</span> },</span>
<span class="line" id="L280"> HP{ .val = <span class="tok-number">1.000000e+34</span>, .off = <span class="tok-number">5.442476901295718400e+17</span> },</span>
<span class="line" id="L281"> HP{ .val = <span class="tok-number">1.000000e+33</span>, .off = <span class="tok-number">5.442476901295718400e+16</span> },</span>
<span class="line" id="L282"> HP{ .val = <span class="tok-number">1.000000e+32</span>, .off = -<span class="tok-number">5.366162204393472000e+15</span> },</span>
<span class="line" id="L283"> HP{ .val = <span class="tok-number">1.000000e+31</span>, .off = <span class="tok-number">3.641037050347520000e+14</span> },</span>
<span class="line" id="L284"> HP{ .val = <span class="tok-number">1.000000e+30</span>, .off = -<span class="tok-number">1.988462483865600000e+13</span> },</span>
<span class="line" id="L285"> HP{ .val = <span class="tok-number">1.000000e+29</span>, .off = <span class="tok-number">8.566849142784000000e+12</span> },</span>
<span class="line" id="L286"> HP{ .val = <span class="tok-number">1.000000e+28</span>, .off = <span class="tok-number">4.168802631680000000e+11</span> },</span>
<span class="line" id="L287"> HP{ .val = <span class="tok-number">1.000000e+27</span>, .off = -<span class="tok-number">1.328755507200000000e+10</span> },</span>
<span class="line" id="L288"> HP{ .val = <span class="tok-number">1.000000e+26</span>, .off = -<span class="tok-number">4.764729344000000000e+09</span> },</span>
<span class="line" id="L289"> HP{ .val = <span class="tok-number">1.000000e+25</span>, .off = -<span class="tok-number">9.059696640000000000e+08</span> },</span>
<span class="line" id="L290"> HP{ .val = <span class="tok-number">1.000000e+24</span>, .off = <span class="tok-number">1.677721600000000000e+07</span> },</span>
<span class="line" id="L291"> HP{ .val = <span class="tok-number">1.000000e+23</span>, .off = <span class="tok-number">8.388608000000000000e+06</span> },</span>
<span class="line" id="L292"> HP{ .val = <span class="tok-number">1.000000e+22</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L293"> HP{ .val = <span class="tok-number">1.000000e+21</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L294"> HP{ .val = <span class="tok-number">1.000000e+20</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L295"> HP{ .val = <span class="tok-number">1.000000e+19</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L296"> HP{ .val = <span class="tok-number">1.000000e+18</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L297"> HP{ .val = <span class="tok-number">1.000000e+17</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L298"> HP{ .val = <span class="tok-number">1.000000e+16</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L299"> HP{ .val = <span class="tok-number">1.000000e+15</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L300"> HP{ .val = <span class="tok-number">1.000000e+14</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L301"> HP{ .val = <span class="tok-number">1.000000e+13</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L302"> HP{ .val = <span class="tok-number">1.000000e+12</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L303"> HP{ .val = <span class="tok-number">1.000000e+11</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L304"> HP{ .val = <span class="tok-number">1.000000e+10</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L305"> HP{ .val = <span class="tok-number">1.000000e+09</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L306"> HP{ .val = <span class="tok-number">1.000000e+08</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L307"> HP{ .val = <span class="tok-number">1.000000e+07</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L308"> HP{ .val = <span class="tok-number">1.000000e+06</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L309"> HP{ .val = <span class="tok-number">1.000000e+05</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L310"> HP{ .val = <span class="tok-number">1.000000e+04</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L311"> HP{ .val = <span class="tok-number">1.000000e+03</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L312"> HP{ .val = <span class="tok-number">1.000000e+02</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L313"> HP{ .val = <span class="tok-number">1.000000e+01</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L314"> HP{ .val = <span class="tok-number">1.000000e+00</span>, .off = <span class="tok-number">0.000000000000000000e+00</span> },</span>
<span class="line" id="L315"> HP{ .val = <span class="tok-number">1.000000e-01</span>, .off = -<span class="tok-number">5.551115123125783010e-18</span> },</span>
<span class="line" id="L316"> HP{ .val = <span class="tok-number">1.000000e-02</span>, .off = -<span class="tok-number">2.081668171172168436e-19</span> },</span>
<span class="line" id="L317"> HP{ .val = <span class="tok-number">1.000000e-03</span>, .off = -<span class="tok-number">2.081668171172168557e-20</span> },</span>
<span class="line" id="L318"> HP{ .val = <span class="tok-number">1.000000e-04</span>, .off = -<span class="tok-number">4.792173602385929943e-21</span> },</span>
<span class="line" id="L319"> HP{ .val = <span class="tok-number">1.000000e-05</span>, .off = -<span class="tok-number">8.180305391403130547e-22</span> },</span>
<span class="line" id="L320"> HP{ .val = <span class="tok-number">1.000000e-06</span>, .off = <span class="tok-number">4.525188817411374069e-23</span> },</span>
<span class="line" id="L321"> HP{ .val = <span class="tok-number">1.000000e-07</span>, .off = <span class="tok-number">4.525188817411373922e-24</span> },</span>
<span class="line" id="L322"> HP{ .val = <span class="tok-number">1.000000e-08</span>, .off = -<span class="tok-number">2.092256083012847109e-25</span> },</span>
<span class="line" id="L323"> HP{ .val = <span class="tok-number">1.000000e-09</span>, .off = -<span class="tok-number">6.228159145777985254e-26</span> },</span>
<span class="line" id="L324"> HP{ .val = <span class="tok-number">1.000000e-10</span>, .off = -<span class="tok-number">3.643219731549774344e-27</span> },</span>
<span class="line" id="L325"> HP{ .val = <span class="tok-number">1.000000e-11</span>, .off = <span class="tok-number">6.050303071806019080e-28</span> },</span>
<span class="line" id="L326"> HP{ .val = <span class="tok-number">1.000000e-12</span>, .off = <span class="tok-number">2.011335237074438524e-29</span> },</span>
<span class="line" id="L327"> HP{ .val = <span class="tok-number">1.000000e-13</span>, .off = -<span class="tok-number">3.037374556340037101e-30</span> },</span>
<span class="line" id="L328"> HP{ .val = <span class="tok-number">1.000000e-14</span>, .off = <span class="tok-number">1.180690645440101289e-32</span> },</span>
<span class="line" id="L329"> HP{ .val = <span class="tok-number">1.000000e-15</span>, .off = -<span class="tok-number">7.770539987666107583e-32</span> },</span>
<span class="line" id="L330"> HP{ .val = <span class="tok-number">1.000000e-16</span>, .off = <span class="tok-number">2.090221327596539779e-33</span> },</span>
<span class="line" id="L331"> HP{ .val = <span class="tok-number">1.000000e-17</span>, .off = -<span class="tok-number">7.154242405462192144e-34</span> },</span>
<span class="line" id="L332"> HP{ .val = <span class="tok-number">1.000000e-18</span>, .off = -<span class="tok-number">7.154242405462192572e-35</span> },</span>
<span class="line" id="L333"> HP{ .val = <span class="tok-number">1.000000e-19</span>, .off = <span class="tok-number">2.475407316473986894e-36</span> },</span>
<span class="line" id="L334"> HP{ .val = <span class="tok-number">1.000000e-20</span>, .off = <span class="tok-number">5.484672854579042914e-37</span> },</span>
<span class="line" id="L335"> HP{ .val = <span class="tok-number">1.000000e-21</span>, .off = <span class="tok-number">9.246254777210362522e-38</span> },</span>
<span class="line" id="L336"> HP{ .val = <span class="tok-number">1.000000e-22</span>, .off = -<span class="tok-number">4.859677432657087182e-39</span> },</span>
<span class="line" id="L337"> HP{ .val = <span class="tok-number">1.000000e-23</span>, .off = <span class="tok-number">3.956530198510069291e-40</span> },</span>
<span class="line" id="L338"> HP{ .val = <span class="tok-number">1.000000e-24</span>, .off = <span class="tok-number">7.629950044829717753e-41</span> },</span>
<span class="line" id="L339"> HP{ .val = <span class="tok-number">1.000000e-25</span>, .off = -<span class="tok-number">3.849486974919183692e-42</span> },</span>
<span class="line" id="L340"> HP{ .val = <span class="tok-number">1.000000e-26</span>, .off = -<span class="tok-number">3.849486974919184170e-43</span> },</span>
<span class="line" id="L341"> HP{ .val = <span class="tok-number">1.000000e-27</span>, .off = -<span class="tok-number">3.849486974919184070e-44</span> },</span>
<span class="line" id="L342"> HP{ .val = <span class="tok-number">1.000000e-28</span>, .off = <span class="tok-number">2.876745653839937870e-45</span> },</span>
<span class="line" id="L343"> HP{ .val = <span class="tok-number">1.000000e-29</span>, .off = <span class="tok-number">5.679342582489572168e-46</span> },</span>
<span class="line" id="L344"> HP{ .val = <span class="tok-number">1.000000e-30</span>, .off = -<span class="tok-number">8.333642060758598930e-47</span> },</span>
<span class="line" id="L345"> HP{ .val = <span class="tok-number">1.000000e-31</span>, .off = -<span class="tok-number">8.333642060758597958e-48</span> },</span>
<span class="line" id="L346"> HP{ .val = <span class="tok-number">1.000000e-32</span>, .off = -<span class="tok-number">5.596730997624190224e-49</span> },</span>
<span class="line" id="L347"> HP{ .val = <span class="tok-number">1.000000e-33</span>, .off = -<span class="tok-number">5.596730997624190604e-50</span> },</span>
<span class="line" id="L348"> HP{ .val = <span class="tok-number">1.000000e-34</span>, .off = <span class="tok-number">7.232539610818348498e-51</span> },</span>
<span class="line" id="L349"> HP{ .val = <span class="tok-number">1.000000e-35</span>, .off = -<span class="tok-number">7.857545194582380514e-53</span> },</span>
<span class="line" id="L350"> HP{ .val = <span class="tok-number">1.000000e-36</span>, .off = <span class="tok-number">5.896157255772251528e-53</span> },</span>
<span class="line" id="L351"> HP{ .val = <span class="tok-number">1.000000e-37</span>, .off = -<span class="tok-number">6.632427322784915796e-54</span> },</span>
<span class="line" id="L352"> HP{ .val = <span class="tok-number">1.000000e-38</span>, .off = <span class="tok-number">3.808059826012723592e-55</span> },</span>
<span class="line" id="L353"> HP{ .val = <span class="tok-number">1.000000e-39</span>, .off = <span class="tok-number">7.070712060011985131e-56</span> },</span>
<span class="line" id="L354"> HP{ .val = <span class="tok-number">1.000000e-40</span>, .off = <span class="tok-number">7.070712060011985584e-57</span> },</span>
<span class="line" id="L355"> HP{ .val = <span class="tok-number">1.000000e-41</span>, .off = -<span class="tok-number">5.761291134237854167e-59</span> },</span>
<span class="line" id="L356"> HP{ .val = <span class="tok-number">1.000000e-42</span>, .off = -<span class="tok-number">3.762312935688689794e-59</span> },</span>
<span class="line" id="L357"> HP{ .val = <span class="tok-number">1.000000e-43</span>, .off = -<span class="tok-number">7.745042713519821150e-60</span> },</span>
<span class="line" id="L358"> HP{ .val = <span class="tok-number">1.000000e-44</span>, .off = <span class="tok-number">4.700987842202462817e-61</span> },</span>
<span class="line" id="L359"> HP{ .val = <span class="tok-number">1.000000e-45</span>, .off = <span class="tok-number">1.589480203271891964e-62</span> },</span>
<span class="line" id="L360"> HP{ .val = <span class="tok-number">1.000000e-46</span>, .off = -<span class="tok-number">2.299904345391321765e-63</span> },</span>
<span class="line" id="L361"> HP{ .val = <span class="tok-number">1.000000e-47</span>, .off = <span class="tok-number">2.561826340437695261e-64</span> },</span>
<span class="line" id="L362"> HP{ .val = <span class="tok-number">1.000000e-48</span>, .off = <span class="tok-number">2.561826340437695345e-65</span> },</span>
<span class="line" id="L363"> HP{ .val = <span class="tok-number">1.000000e-49</span>, .off = <span class="tok-number">6.360053438741614633e-66</span> },</span>
<span class="line" id="L364"> HP{ .val = <span class="tok-number">1.000000e-50</span>, .off = -<span class="tok-number">7.616223705782342295e-68</span> },</span>
<span class="line" id="L365"> HP{ .val = <span class="tok-number">1.000000e-51</span>, .off = -<span class="tok-number">7.616223705782343324e-69</span> },</span>
<span class="line" id="L366"> HP{ .val = <span class="tok-number">1.000000e-52</span>, .off = -<span class="tok-number">7.616223705782342295e-70</span> },</span>
<span class="line" id="L367"> HP{ .val = <span class="tok-number">1.000000e-53</span>, .off = -<span class="tok-number">3.079876214757872338e-70</span> },</span>
<span class="line" id="L368"> HP{ .val = <span class="tok-number">1.000000e-54</span>, .off = -<span class="tok-number">3.079876214757872821e-71</span> },</span>
<span class="line" id="L369"> HP{ .val = <span class="tok-number">1.000000e-55</span>, .off = <span class="tok-number">5.423954167728123147e-73</span> },</span>
<span class="line" id="L370"> HP{ .val = <span class="tok-number">1.000000e-56</span>, .off = -<span class="tok-number">3.985444122640543680e-73</span> },</span>
<span class="line" id="L371"> HP{ .val = <span class="tok-number">1.000000e-57</span>, .off = <span class="tok-number">4.504255013759498850e-74</span> },</span>
<span class="line" id="L372"> HP{ .val = <span class="tok-number">1.000000e-58</span>, .off = -<span class="tok-number">2.570494266573869991e-75</span> },</span>
<span class="line" id="L373"> HP{ .val = <span class="tok-number">1.000000e-59</span>, .off = -<span class="tok-number">2.570494266573869930e-76</span> },</span>
<span class="line" id="L374"> HP{ .val = <span class="tok-number">1.000000e-60</span>, .off = <span class="tok-number">2.956653608686574324e-77</span> },</span>
<span class="line" id="L375"> HP{ .val = <span class="tok-number">1.000000e-61</span>, .off = -<span class="tok-number">3.952281235388981376e-78</span> },</span>
<span class="line" id="L376"> HP{ .val = <span class="tok-number">1.000000e-62</span>, .off = -<span class="tok-number">3.952281235388981376e-79</span> },</span>
<span class="line" id="L377"> HP{ .val = <span class="tok-number">1.000000e-63</span>, .off = -<span class="tok-number">6.651083908855995172e-80</span> },</span>
<span class="line" id="L378"> HP{ .val = <span class="tok-number">1.000000e-64</span>, .off = <span class="tok-number">3.469426116645307030e-81</span> },</span>
<span class="line" id="L379"> HP{ .val = <span class="tok-number">1.000000e-65</span>, .off = <span class="tok-number">7.686305293937516319e-82</span> },</span>
<span class="line" id="L380"> HP{ .val = <span class="tok-number">1.000000e-66</span>, .off = <span class="tok-number">2.415206322322254927e-83</span> },</span>
<span class="line" id="L381"> HP{ .val = <span class="tok-number">1.000000e-67</span>, .off = <span class="tok-number">5.709643179581793251e-84</span> },</span>
<span class="line" id="L382"> HP{ .val = <span class="tok-number">1.000000e-68</span>, .off = -<span class="tok-number">6.644495035141475923e-85</span> },</span>
<span class="line" id="L383"> HP{ .val = <span class="tok-number">1.000000e-69</span>, .off = <span class="tok-number">3.650620143794581913e-86</span> },</span>
<span class="line" id="L384"> HP{ .val = <span class="tok-number">1.000000e-70</span>, .off = <span class="tok-number">4.333966503770636492e-88</span> },</span>
<span class="line" id="L385"> HP{ .val = <span class="tok-number">1.000000e-71</span>, .off = <span class="tok-number">8.476455383920859113e-88</span> },</span>
<span class="line" id="L386"> HP{ .val = <span class="tok-number">1.000000e-72</span>, .off = <span class="tok-number">3.449543675455986564e-89</span> },</span>
<span class="line" id="L387"> HP{ .val = <span class="tok-number">1.000000e-73</span>, .off = <span class="tok-number">3.077238576654418974e-91</span> },</span>
<span class="line" id="L388"> HP{ .val = <span class="tok-number">1.000000e-74</span>, .off = <span class="tok-number">4.234998629903623140e-91</span> },</span>
<span class="line" id="L389"> HP{ .val = <span class="tok-number">1.000000e-75</span>, .off = <span class="tok-number">4.234998629903623412e-92</span> },</span>
<span class="line" id="L390"> HP{ .val = <span class="tok-number">1.000000e-76</span>, .off = <span class="tok-number">7.303182045714702338e-93</span> },</span>
<span class="line" id="L391"> HP{ .val = <span class="tok-number">1.000000e-77</span>, .off = <span class="tok-number">7.303182045714701699e-94</span> },</span>
<span class="line" id="L392"> HP{ .val = <span class="tok-number">1.000000e-78</span>, .off = <span class="tok-number">1.121271649074855759e-96</span> },</span>
<span class="line" id="L393"> HP{ .val = <span class="tok-number">1.000000e-79</span>, .off = <span class="tok-number">1.121271649074855863e-97</span> },</span>
<span class="line" id="L394"> HP{ .val = <span class="tok-number">1.000000e-80</span>, .off = <span class="tok-number">3.857468248661243988e-97</span> },</span>
<span class="line" id="L395"> HP{ .val = <span class="tok-number">1.000000e-81</span>, .off = <span class="tok-number">3.857468248661244248e-98</span> },</span>
<span class="line" id="L396"> HP{ .val = <span class="tok-number">1.000000e-82</span>, .off = <span class="tok-number">3.857468248661244410e-99</span> },</span>
<span class="line" id="L397"> HP{ .val = <span class="tok-number">1.000000e-83</span>, .off = -<span class="tok-number">3.457651055545315679e-100</span> },</span>
<span class="line" id="L398"> HP{ .val = <span class="tok-number">1.000000e-84</span>, .off = -<span class="tok-number">3.457651055545315933e-101</span> },</span>
<span class="line" id="L399"> HP{ .val = <span class="tok-number">1.000000e-85</span>, .off = <span class="tok-number">2.257285900866059216e-102</span> },</span>
<span class="line" id="L400"> HP{ .val = <span class="tok-number">1.000000e-86</span>, .off = -<span class="tok-number">8.458220892405268345e-103</span> },</span>
<span class="line" id="L401"> HP{ .val = <span class="tok-number">1.000000e-87</span>, .off = -<span class="tok-number">1.761029146610688867e-104</span> },</span>
<span class="line" id="L402"> HP{ .val = <span class="tok-number">1.000000e-88</span>, .off = <span class="tok-number">6.610460535632536565e-105</span> },</span>
<span class="line" id="L403"> HP{ .val = <span class="tok-number">1.000000e-89</span>, .off = -<span class="tok-number">3.853901567171494935e-106</span> },</span>
<span class="line" id="L404"> HP{ .val = <span class="tok-number">1.000000e-90</span>, .off = <span class="tok-number">5.062493089968513723e-108</span> },</span>
<span class="line" id="L405"> HP{ .val = <span class="tok-number">1.000000e-91</span>, .off = -<span class="tok-number">2.218844988608365240e-108</span> },</span>
<span class="line" id="L406"> HP{ .val = <span class="tok-number">1.000000e-92</span>, .off = <span class="tok-number">1.187522883398155383e-109</span> },</span>
<span class="line" id="L407"> HP{ .val = <span class="tok-number">1.000000e-93</span>, .off = <span class="tok-number">9.703442563414457296e-110</span> },</span>
<span class="line" id="L408"> HP{ .val = <span class="tok-number">1.000000e-94</span>, .off = <span class="tok-number">4.380992763404268896e-111</span> },</span>
<span class="line" id="L409"> HP{ .val = <span class="tok-number">1.000000e-95</span>, .off = <span class="tok-number">1.054461638397900823e-112</span> },</span>
<span class="line" id="L410"> HP{ .val = <span class="tok-number">1.000000e-96</span>, .off = <span class="tok-number">9.370789450913819736e-113</span> },</span>
<span class="line" id="L411"> HP{ .val = <span class="tok-number">1.000000e-97</span>, .off = -<span class="tok-number">3.623472756142303998e-114</span> },</span>
<span class="line" id="L412"> HP{ .val = <span class="tok-number">1.000000e-98</span>, .off = <span class="tok-number">6.122223899149788839e-115</span> },</span>
<span class="line" id="L413"> HP{ .val = <span class="tok-number">1.000000e-99</span>, .off = -<span class="tok-number">1.999189980260288281e-116</span> },</span>
<span class="line" id="L414"> HP{ .val = <span class="tok-number">1.000000e-100</span>, .off = -<span class="tok-number">1.999189980260288281e-117</span> },</span>
<span class="line" id="L415"> HP{ .val = <span class="tok-number">1.000000e-101</span>, .off = -<span class="tok-number">5.171617276904849634e-118</span> },</span>
<span class="line" id="L416"> HP{ .val = <span class="tok-number">1.000000e-102</span>, .off = <span class="tok-number">6.724985085512256320e-119</span> },</span>
<span class="line" id="L417"> HP{ .val = <span class="tok-number">1.000000e-103</span>, .off = <span class="tok-number">4.246526260008692213e-120</span> },</span>
<span class="line" id="L418"> HP{ .val = <span class="tok-number">1.000000e-104</span>, .off = <span class="tok-number">7.344599791888147003e-121</span> },</span>
<span class="line" id="L419"> HP{ .val = <span class="tok-number">1.000000e-105</span>, .off = <span class="tok-number">3.472007877038828407e-122</span> },</span>
<span class="line" id="L420"> HP{ .val = <span class="tok-number">1.000000e-106</span>, .off = <span class="tok-number">5.892377823819652194e-123</span> },</span>
<span class="line" id="L421"> HP{ .val = <span class="tok-number">1.000000e-107</span>, .off = -<span class="tok-number">1.585470431324073925e-125</span> },</span>
<span class="line" id="L422"> HP{ .val = <span class="tok-number">1.000000e-108</span>, .off = -<span class="tok-number">3.940375084977444795e-125</span> },</span>
<span class="line" id="L423"> HP{ .val = <span class="tok-number">1.000000e-109</span>, .off = <span class="tok-number">7.869099673288519908e-127</span> },</span>
<span class="line" id="L424"> HP{ .val = <span class="tok-number">1.000000e-110</span>, .off = -<span class="tok-number">5.122196348054018581e-127</span> },</span>
<span class="line" id="L425"> HP{ .val = <span class="tok-number">1.000000e-111</span>, .off = -<span class="tok-number">8.815387795168313713e-128</span> },</span>
<span class="line" id="L426"> HP{ .val = <span class="tok-number">1.000000e-112</span>, .off = <span class="tok-number">5.034080131510290214e-129</span> },</span>
<span class="line" id="L427"> HP{ .val = <span class="tok-number">1.000000e-113</span>, .off = <span class="tok-number">2.148774313452247863e-130</span> },</span>
<span class="line" id="L428"> HP{ .val = <span class="tok-number">1.000000e-114</span>, .off = -<span class="tok-number">5.064490231692858416e-131</span> },</span>
<span class="line" id="L429"> HP{ .val = <span class="tok-number">1.000000e-115</span>, .off = -<span class="tok-number">5.064490231692858166e-132</span> },</span>
<span class="line" id="L430"> HP{ .val = <span class="tok-number">1.000000e-116</span>, .off = <span class="tok-number">5.708726942017560559e-134</span> },</span>
<span class="line" id="L431"> HP{ .val = <span class="tok-number">1.000000e-117</span>, .off = -<span class="tok-number">2.951229134482377772e-134</span> },</span>
<span class="line" id="L432"> HP{ .val = <span class="tok-number">1.000000e-118</span>, .off = <span class="tok-number">1.451398151372789513e-135</span> },</span>
<span class="line" id="L433"> HP{ .val = <span class="tok-number">1.000000e-119</span>, .off = -<span class="tok-number">1.300243902286690040e-136</span> },</span>
<span class="line" id="L434"> HP{ .val = <span class="tok-number">1.000000e-120</span>, .off = <span class="tok-number">2.139308664787659449e-137</span> },</span>
<span class="line" id="L435"> HP{ .val = <span class="tok-number">1.000000e-121</span>, .off = <span class="tok-number">2.139308664787659329e-138</span> },</span>
<span class="line" id="L436"> HP{ .val = <span class="tok-number">1.000000e-122</span>, .off = -<span class="tok-number">5.922142664292847471e-139</span> },</span>
<span class="line" id="L437"> HP{ .val = <span class="tok-number">1.000000e-123</span>, .off = -<span class="tok-number">5.922142664292846912e-140</span> },</span>
<span class="line" id="L438"> HP{ .val = <span class="tok-number">1.000000e-124</span>, .off = <span class="tok-number">6.673875037395443799e-141</span> },</span>
<span class="line" id="L439"> HP{ .val = <span class="tok-number">1.000000e-125</span>, .off = -<span class="tok-number">1.198636026159737932e-142</span> },</span>
<span class="line" id="L440"> HP{ .val = <span class="tok-number">1.000000e-126</span>, .off = <span class="tok-number">5.361789860136246995e-143</span> },</span>
<span class="line" id="L441"> HP{ .val = <span class="tok-number">1.000000e-127</span>, .off = -<span class="tok-number">2.838742497733733936e-144</span> },</span>
<span class="line" id="L442"> HP{ .val = <span class="tok-number">1.000000e-128</span>, .off = -<span class="tok-number">5.401408859568103261e-145</span> },</span>
<span class="line" id="L443"> HP{ .val = <span class="tok-number">1.000000e-129</span>, .off = <span class="tok-number">7.411922949603743011e-146</span> },</span>
<span class="line" id="L444"> HP{ .val = <span class="tok-number">1.000000e-130</span>, .off = -<span class="tok-number">8.604741811861064385e-147</span> },</span>
<span class="line" id="L445"> HP{ .val = <span class="tok-number">1.000000e-131</span>, .off = <span class="tok-number">1.405673664054439890e-148</span> },</span>
<span class="line" id="L446"> HP{ .val = <span class="tok-number">1.000000e-132</span>, .off = <span class="tok-number">1.405673664054439933e-149</span> },</span>
<span class="line" id="L447"> HP{ .val = <span class="tok-number">1.000000e-133</span>, .off = -<span class="tok-number">6.414963426504548053e-150</span> },</span>
<span class="line" id="L448"> HP{ .val = <span class="tok-number">1.000000e-134</span>, .off = -<span class="tok-number">3.971014335704864578e-151</span> },</span>
<span class="line" id="L449"> HP{ .val = <span class="tok-number">1.000000e-135</span>, .off = -<span class="tok-number">3.971014335704864748e-152</span> },</span>
<span class="line" id="L450"> HP{ .val = <span class="tok-number">1.000000e-136</span>, .off = -<span class="tok-number">1.523438813303585576e-154</span> },</span>
<span class="line" id="L451"> HP{ .val = <span class="tok-number">1.000000e-137</span>, .off = <span class="tok-number">2.234325152653707766e-154</span> },</span>
<span class="line" id="L452"> HP{ .val = <span class="tok-number">1.000000e-138</span>, .off = -<span class="tok-number">6.715683724786540160e-155</span> },</span>
<span class="line" id="L453"> HP{ .val = <span class="tok-number">1.000000e-139</span>, .off = -<span class="tok-number">2.986513359186437306e-156</span> },</span>
<span class="line" id="L454"> HP{ .val = <span class="tok-number">1.000000e-140</span>, .off = <span class="tok-number">1.674949597813692102e-157</span> },</span>
<span class="line" id="L455"> HP{ .val = <span class="tok-number">1.000000e-141</span>, .off = -<span class="tok-number">4.151879098436469092e-158</span> },</span>
<span class="line" id="L456"> HP{ .val = <span class="tok-number">1.000000e-142</span>, .off = -<span class="tok-number">4.151879098436469295e-159</span> },</span>
<span class="line" id="L457"> HP{ .val = <span class="tok-number">1.000000e-143</span>, .off = <span class="tok-number">4.952540739454407825e-160</span> },</span>
<span class="line" id="L458"> HP{ .val = <span class="tok-number">1.000000e-144</span>, .off = <span class="tok-number">4.952540739454407667e-161</span> },</span>
<span class="line" id="L459"> HP{ .val = <span class="tok-number">1.000000e-145</span>, .off = <span class="tok-number">8.508954738630531443e-162</span> },</span>
<span class="line" id="L460"> HP{ .val = <span class="tok-number">1.000000e-146</span>, .off = -<span class="tok-number">2.604839008794855481e-163</span> },</span>
<span class="line" id="L461"> HP{ .val = <span class="tok-number">1.000000e-147</span>, .off = <span class="tok-number">2.952057864917838382e-164</span> },</span>
<span class="line" id="L462"> HP{ .val = <span class="tok-number">1.000000e-148</span>, .off = <span class="tok-number">6.425118410988271757e-165</span> },</span>
<span class="line" id="L463"> HP{ .val = <span class="tok-number">1.000000e-149</span>, .off = <span class="tok-number">2.083792728400229858e-166</span> },</span>
<span class="line" id="L464"> HP{ .val = <span class="tok-number">1.000000e-150</span>, .off = -<span class="tok-number">6.295358232172964237e-168</span> },</span>
<span class="line" id="L465"> HP{ .val = <span class="tok-number">1.000000e-151</span>, .off = <span class="tok-number">6.153785555826519421e-168</span> },</span>
<span class="line" id="L466"> HP{ .val = <span class="tok-number">1.000000e-152</span>, .off = -<span class="tok-number">6.564942029880634994e-169</span> },</span>
<span class="line" id="L467"> HP{ .val = <span class="tok-number">1.000000e-153</span>, .off = -<span class="tok-number">3.915207116191644540e-170</span> },</span>
<span class="line" id="L468"> HP{ .val = <span class="tok-number">1.000000e-154</span>, .off = <span class="tok-number">2.709130168030831503e-171</span> },</span>
<span class="line" id="L469"> HP{ .val = <span class="tok-number">1.000000e-155</span>, .off = -<span class="tok-number">1.431080634608215966e-172</span> },</span>
<span class="line" id="L470"> HP{ .val = <span class="tok-number">1.000000e-156</span>, .off = -<span class="tok-number">4.018712386257620994e-173</span> },</span>
<span class="line" id="L471"> HP{ .val = <span class="tok-number">1.000000e-157</span>, .off = <span class="tok-number">5.684906682427646782e-174</span> },</span>
<span class="line" id="L472"> HP{ .val = <span class="tok-number">1.000000e-158</span>, .off = -<span class="tok-number">6.444617153428937489e-175</span> },</span>
<span class="line" id="L473"> HP{ .val = <span class="tok-number">1.000000e-159</span>, .off = <span class="tok-number">1.136335243981427681e-176</span> },</span>
<span class="line" id="L474"> HP{ .val = <span class="tok-number">1.000000e-160</span>, .off = <span class="tok-number">1.136335243981427725e-177</span> },</span>
<span class="line" id="L475"> HP{ .val = <span class="tok-number">1.000000e-161</span>, .off = -<span class="tok-number">2.812077463003137395e-178</span> },</span>
<span class="line" id="L476"> HP{ .val = <span class="tok-number">1.000000e-162</span>, .off = <span class="tok-number">4.591196362592922204e-179</span> },</span>
<span class="line" id="L477"> HP{ .val = <span class="tok-number">1.000000e-163</span>, .off = <span class="tok-number">7.675893789924613703e-180</span> },</span>
<span class="line" id="L478"> HP{ .val = <span class="tok-number">1.000000e-164</span>, .off = <span class="tok-number">3.820022005759999543e-181</span> },</span>
<span class="line" id="L479"> HP{ .val = <span class="tok-number">1.000000e-165</span>, .off = -<span class="tok-number">9.998177244457686588e-183</span> },</span>
<span class="line" id="L480"> HP{ .val = <span class="tok-number">1.000000e-166</span>, .off = -<span class="tok-number">4.012217555824373639e-183</span> },</span>
<span class="line" id="L481"> HP{ .val = <span class="tok-number">1.000000e-167</span>, .off = -<span class="tok-number">2.467177666011174334e-185</span> },</span>
<span class="line" id="L482"> HP{ .val = <span class="tok-number">1.000000e-168</span>, .off = -<span class="tok-number">4.953592503130188139e-185</span> },</span>
<span class="line" id="L483"> HP{ .val = <span class="tok-number">1.000000e-169</span>, .off = -<span class="tok-number">2.011795792799518887e-186</span> },</span>
<span class="line" id="L484"> HP{ .val = <span class="tok-number">1.000000e-170</span>, .off = <span class="tok-number">1.665450095113817423e-187</span> },</span>
<span class="line" id="L485"> HP{ .val = <span class="tok-number">1.000000e-171</span>, .off = <span class="tok-number">1.665450095113817487e-188</span> },</span>
<span class="line" id="L486"> HP{ .val = <span class="tok-number">1.000000e-172</span>, .off = -<span class="tok-number">4.080246604750770577e-189</span> },</span>
<span class="line" id="L487"> HP{ .val = <span class="tok-number">1.000000e-173</span>, .off = -<span class="tok-number">4.080246604750770677e-190</span> },</span>
<span class="line" id="L488"> HP{ .val = <span class="tok-number">1.000000e-174</span>, .off = <span class="tok-number">4.085789420184387951e-192</span> },</span>
<span class="line" id="L489"> HP{ .val = <span class="tok-number">1.000000e-175</span>, .off = <span class="tok-number">4.085789420184388146e-193</span> },</span>
<span class="line" id="L490"> HP{ .val = <span class="tok-number">1.000000e-176</span>, .off = <span class="tok-number">4.085789420184388146e-194</span> },</span>
<span class="line" id="L491"> HP{ .val = <span class="tok-number">1.000000e-177</span>, .off = <span class="tok-number">4.792197640035244894e-194</span> },</span>
<span class="line" id="L492"> HP{ .val = <span class="tok-number">1.000000e-178</span>, .off = <span class="tok-number">4.792197640035244742e-195</span> },</span>
<span class="line" id="L493"> HP{ .val = <span class="tok-number">1.000000e-179</span>, .off = -<span class="tok-number">2.057206575616014662e-196</span> },</span>
<span class="line" id="L494"> HP{ .val = <span class="tok-number">1.000000e-180</span>, .off = -<span class="tok-number">2.057206575616014662e-197</span> },</span>
<span class="line" id="L495"> HP{ .val = <span class="tok-number">1.000000e-181</span>, .off = -<span class="tok-number">4.732755097354788053e-198</span> },</span>
<span class="line" id="L496"> HP{ .val = <span class="tok-number">1.000000e-182</span>, .off = -<span class="tok-number">4.732755097354787867e-199</span> },</span>
<span class="line" id="L497"> HP{ .val = <span class="tok-number">1.000000e-183</span>, .off = -<span class="tok-number">5.522105321379546765e-201</span> },</span>
<span class="line" id="L498"> HP{ .val = <span class="tok-number">1.000000e-184</span>, .off = -<span class="tok-number">5.777891238658996019e-201</span> },</span>
<span class="line" id="L499"> HP{ .val = <span class="tok-number">1.000000e-185</span>, .off = <span class="tok-number">7.542096444923057046e-203</span> },</span>
<span class="line" id="L500"> HP{ .val = <span class="tok-number">1.000000e-186</span>, .off = <span class="tok-number">8.919335748431433483e-203</span> },</span>
<span class="line" id="L501"> HP{ .val = <span class="tok-number">1.000000e-187</span>, .off = -<span class="tok-number">1.287071881492476028e-204</span> },</span>
<span class="line" id="L502"> HP{ .val = <span class="tok-number">1.000000e-188</span>, .off = <span class="tok-number">5.091932887209967018e-205</span> },</span>
<span class="line" id="L503"> HP{ .val = <span class="tok-number">1.000000e-189</span>, .off = -<span class="tok-number">6.868701054107114024e-206</span> },</span>
<span class="line" id="L504"> HP{ .val = <span class="tok-number">1.000000e-190</span>, .off = -<span class="tok-number">1.885103578558330118e-207</span> },</span>
<span class="line" id="L505"> HP{ .val = <span class="tok-number">1.000000e-191</span>, .off = -<span class="tok-number">1.885103578558330205e-208</span> },</span>
<span class="line" id="L506"> HP{ .val = <span class="tok-number">1.000000e-192</span>, .off = -<span class="tok-number">9.671974634103305058e-209</span> },</span>
<span class="line" id="L507"> HP{ .val = <span class="tok-number">1.000000e-193</span>, .off = -<span class="tok-number">4.805180224387695640e-210</span> },</span>
<span class="line" id="L508"> HP{ .val = <span class="tok-number">1.000000e-194</span>, .off = -<span class="tok-number">1.763433718315439838e-211</span> },</span>
<span class="line" id="L509"> HP{ .val = <span class="tok-number">1.000000e-195</span>, .off = -<span class="tok-number">9.367799983496079132e-212</span> },</span>
<span class="line" id="L510"> HP{ .val = <span class="tok-number">1.000000e-196</span>, .off = -<span class="tok-number">4.615071067758179837e-213</span> },</span>
<span class="line" id="L511"> HP{ .val = <span class="tok-number">1.000000e-197</span>, .off = <span class="tok-number">1.325840076914194777e-214</span> },</span>
<span class="line" id="L512"> HP{ .val = <span class="tok-number">1.000000e-198</span>, .off = <span class="tok-number">8.751979007754662425e-215</span> },</span>
<span class="line" id="L513"> HP{ .val = <span class="tok-number">1.000000e-199</span>, .off = <span class="tok-number">1.789973760091724198e-216</span> },</span>
<span class="line" id="L514"> HP{ .val = <span class="tok-number">1.000000e-200</span>, .off = <span class="tok-number">1.789973760091724077e-217</span> },</span>
<span class="line" id="L515"> HP{ .val = <span class="tok-number">1.000000e-201</span>, .off = <span class="tok-number">5.416018159916171171e-218</span> },</span>
<span class="line" id="L516"> HP{ .val = <span class="tok-number">1.000000e-202</span>, .off = -<span class="tok-number">3.649092839644947067e-219</span> },</span>
<span class="line" id="L517"> HP{ .val = <span class="tok-number">1.000000e-203</span>, .off = -<span class="tok-number">3.649092839644947067e-220</span> },</span>
<span class="line" id="L518"> HP{ .val = <span class="tok-number">1.000000e-204</span>, .off = -<span class="tok-number">1.080338554413850956e-222</span> },</span>
<span class="line" id="L519"> HP{ .val = <span class="tok-number">1.000000e-205</span>, .off = -<span class="tok-number">1.080338554413850841e-223</span> },</span>
<span class="line" id="L520"> HP{ .val = <span class="tok-number">1.000000e-206</span>, .off = -<span class="tok-number">2.874486186850417807e-223</span> },</span>
<span class="line" id="L521"> HP{ .val = <span class="tok-number">1.000000e-207</span>, .off = <span class="tok-number">7.499710055933455072e-224</span> },</span>
<span class="line" id="L522"> HP{ .val = <span class="tok-number">1.000000e-208</span>, .off = -<span class="tok-number">9.790617015372999087e-225</span> },</span>
<span class="line" id="L523"> HP{ .val = <span class="tok-number">1.000000e-209</span>, .off = -<span class="tok-number">4.387389805589732612e-226</span> },</span>
<span class="line" id="L524"> HP{ .val = <span class="tok-number">1.000000e-210</span>, .off = -<span class="tok-number">4.387389805589732612e-227</span> },</span>
<span class="line" id="L525"> HP{ .val = <span class="tok-number">1.000000e-211</span>, .off = -<span class="tok-number">8.608661063232909897e-228</span> },</span>
<span class="line" id="L526"> HP{ .val = <span class="tok-number">1.000000e-212</span>, .off = <span class="tok-number">4.582811616902018972e-229</span> },</span>
<span class="line" id="L527"> HP{ .val = <span class="tok-number">1.000000e-213</span>, .off = <span class="tok-number">4.582811616902019155e-230</span> },</span>
<span class="line" id="L528"> HP{ .val = <span class="tok-number">1.000000e-214</span>, .off = <span class="tok-number">8.705146829444184930e-231</span> },</span>
<span class="line" id="L529"> HP{ .val = <span class="tok-number">1.000000e-215</span>, .off = -<span class="tok-number">4.177150709750081830e-232</span> },</span>
<span class="line" id="L530"> HP{ .val = <span class="tok-number">1.000000e-216</span>, .off = -<span class="tok-number">4.177150709750082366e-233</span> },</span>
<span class="line" id="L531"> HP{ .val = <span class="tok-number">1.000000e-217</span>, .off = -<span class="tok-number">8.202868690748290237e-234</span> },</span>
<span class="line" id="L532"> HP{ .val = <span class="tok-number">1.000000e-218</span>, .off = -<span class="tok-number">3.170721214500530119e-235</span> },</span>
<span class="line" id="L533"> HP{ .val = <span class="tok-number">1.000000e-219</span>, .off = -<span class="tok-number">3.170721214500529857e-236</span> },</span>
<span class="line" id="L534"> HP{ .val = <span class="tok-number">1.000000e-220</span>, .off = <span class="tok-number">7.606440013180328441e-238</span> },</span>
<span class="line" id="L535"> HP{ .val = <span class="tok-number">1.000000e-221</span>, .off = -<span class="tok-number">1.696459258568569049e-238</span> },</span>
<span class="line" id="L536"> HP{ .val = <span class="tok-number">1.000000e-222</span>, .off = -<span class="tok-number">4.767838333426821244e-239</span> },</span>
<span class="line" id="L537"> HP{ .val = <span class="tok-number">1.000000e-223</span>, .off = <span class="tok-number">2.910609353718809138e-240</span> },</span>
<span class="line" id="L538"> HP{ .val = <span class="tok-number">1.000000e-224</span>, .off = -<span class="tok-number">1.888420450747209784e-241</span> },</span>
<span class="line" id="L539"> HP{ .val = <span class="tok-number">1.000000e-225</span>, .off = <span class="tok-number">4.110366804835314035e-242</span> },</span>
<span class="line" id="L540"> HP{ .val = <span class="tok-number">1.000000e-226</span>, .off = <span class="tok-number">7.859608839574391006e-243</span> },</span>
<span class="line" id="L541"> HP{ .val = <span class="tok-number">1.000000e-227</span>, .off = <span class="tok-number">5.516332567862468419e-244</span> },</span>
<span class="line" id="L542"> HP{ .val = <span class="tok-number">1.000000e-228</span>, .off = -<span class="tok-number">3.270953451057244613e-245</span> },</span>
<span class="line" id="L543"> HP{ .val = <span class="tok-number">1.000000e-229</span>, .off = -<span class="tok-number">6.932322625607124670e-246</span> },</span>
<span class="line" id="L544"> HP{ .val = <span class="tok-number">1.000000e-230</span>, .off = -<span class="tok-number">4.643966891513449762e-247</span> },</span>
<span class="line" id="L545"> HP{ .val = <span class="tok-number">1.000000e-231</span>, .off = <span class="tok-number">1.076922443720738305e-248</span> },</span>
<span class="line" id="L546"> HP{ .val = <span class="tok-number">1.000000e-232</span>, .off = -<span class="tok-number">2.498633390800628939e-249</span> },</span>
<span class="line" id="L547"> HP{ .val = <span class="tok-number">1.000000e-233</span>, .off = <span class="tok-number">4.205533798926934891e-250</span> },</span>
<span class="line" id="L548"> HP{ .val = <span class="tok-number">1.000000e-234</span>, .off = <span class="tok-number">4.205533798926934891e-251</span> },</span>
<span class="line" id="L549"> HP{ .val = <span class="tok-number">1.000000e-235</span>, .off = <span class="tok-number">4.205533798926934697e-252</span> },</span>
<span class="line" id="L550"> HP{ .val = <span class="tok-number">1.000000e-236</span>, .off = -<span class="tok-number">4.523850562697497656e-253</span> },</span>
<span class="line" id="L551"> HP{ .val = <span class="tok-number">1.000000e-237</span>, .off = <span class="tok-number">9.320146633177728298e-255</span> },</span>
<span class="line" id="L552"> HP{ .val = <span class="tok-number">1.000000e-238</span>, .off = <span class="tok-number">9.320146633177728062e-256</span> },</span>
<span class="line" id="L553"> HP{ .val = <span class="tok-number">1.000000e-239</span>, .off = -<span class="tok-number">7.592774752331086440e-256</span> },</span>
<span class="line" id="L554"> HP{ .val = <span class="tok-number">1.000000e-240</span>, .off = <span class="tok-number">3.063212017229987840e-257</span> },</span>
<span class="line" id="L555"> HP{ .val = <span class="tok-number">1.000000e-241</span>, .off = <span class="tok-number">3.063212017229987562e-258</span> },</span>
<span class="line" id="L556"> HP{ .val = <span class="tok-number">1.000000e-242</span>, .off = <span class="tok-number">3.063212017229987562e-259</span> },</span>
<span class="line" id="L557"> HP{ .val = <span class="tok-number">1.000000e-243</span>, .off = <span class="tok-number">4.616527473176159842e-261</span> },</span>
<span class="line" id="L558"> HP{ .val = <span class="tok-number">1.000000e-244</span>, .off = <span class="tok-number">6.965550922098544975e-261</span> },</span>
<span class="line" id="L559"> HP{ .val = <span class="tok-number">1.000000e-245</span>, .off = <span class="tok-number">6.965550922098544749e-262</span> },</span>
<span class="line" id="L560"> HP{ .val = <span class="tok-number">1.000000e-246</span>, .off = <span class="tok-number">4.424965697574744679e-263</span> },</span>
<span class="line" id="L561"> HP{ .val = <span class="tok-number">1.000000e-247</span>, .off = -<span class="tok-number">1.926497363734756420e-264</span> },</span>
<span class="line" id="L562"> HP{ .val = <span class="tok-number">1.000000e-248</span>, .off = <span class="tok-number">2.043167049583681740e-265</span> },</span>
<span class="line" id="L563"> HP{ .val = <span class="tok-number">1.000000e-249</span>, .off = -<span class="tok-number">5.399953725388390154e-266</span> },</span>
<span class="line" id="L564"> HP{ .val = <span class="tok-number">1.000000e-250</span>, .off = -<span class="tok-number">5.399953725388389982e-267</span> },</span>
<span class="line" id="L565"> HP{ .val = <span class="tok-number">1.000000e-251</span>, .off = -<span class="tok-number">1.523328321757102663e-268</span> },</span>
<span class="line" id="L566"> HP{ .val = <span class="tok-number">1.000000e-252</span>, .off = <span class="tok-number">5.745344310051561161e-269</span> },</span>
<span class="line" id="L567"> HP{ .val = <span class="tok-number">1.000000e-253</span>, .off = -<span class="tok-number">6.369110076296211879e-270</span> },</span>
<span class="line" id="L568"> HP{ .val = <span class="tok-number">1.000000e-254</span>, .off = <span class="tok-number">8.773957906638504842e-271</span> },</span>
<span class="line" id="L569"> HP{ .val = <span class="tok-number">1.000000e-255</span>, .off = -<span class="tok-number">6.904595826956931908e-273</span> },</span>
<span class="line" id="L570"> HP{ .val = <span class="tok-number">1.000000e-256</span>, .off = <span class="tok-number">2.267170882721243669e-273</span> },</span>
<span class="line" id="L571"> HP{ .val = <span class="tok-number">1.000000e-257</span>, .off = <span class="tok-number">2.267170882721243669e-274</span> },</span>
<span class="line" id="L572"> HP{ .val = <span class="tok-number">1.000000e-258</span>, .off = <span class="tok-number">4.577819683828225398e-275</span> },</span>
<span class="line" id="L573"> HP{ .val = <span class="tok-number">1.000000e-259</span>, .off = -<span class="tok-number">6.975424321706684210e-276</span> },</span>
<span class="line" id="L574"> HP{ .val = <span class="tok-number">1.000000e-260</span>, .off = <span class="tok-number">3.855741933482293648e-277</span> },</span>
<span class="line" id="L575"> HP{ .val = <span class="tok-number">1.000000e-261</span>, .off = <span class="tok-number">1.599248963651256552e-278</span> },</span>
<span class="line" id="L576"> HP{ .val = <span class="tok-number">1.000000e-262</span>, .off = -<span class="tok-number">1.221367248637539543e-279</span> },</span>
<span class="line" id="L577"> HP{ .val = <span class="tok-number">1.000000e-263</span>, .off = -<span class="tok-number">1.221367248637539494e-280</span> },</span>
<span class="line" id="L578"> HP{ .val = <span class="tok-number">1.000000e-264</span>, .off = -<span class="tok-number">1.221367248637539647e-281</span> },</span>
<span class="line" id="L579"> HP{ .val = <span class="tok-number">1.000000e-265</span>, .off = <span class="tok-number">1.533140771175737943e-282</span> },</span>
<span class="line" id="L580"> HP{ .val = <span class="tok-number">1.000000e-266</span>, .off = <span class="tok-number">1.533140771175737895e-283</span> },</span>
<span class="line" id="L581"> HP{ .val = <span class="tok-number">1.000000e-267</span>, .off = <span class="tok-number">1.533140771175738074e-284</span> },</span>
<span class="line" id="L582"> HP{ .val = <span class="tok-number">1.000000e-268</span>, .off = <span class="tok-number">4.223090009274641634e-285</span> },</span>
<span class="line" id="L583"> HP{ .val = <span class="tok-number">1.000000e-269</span>, .off = <span class="tok-number">4.223090009274641634e-286</span> },</span>
<span class="line" id="L584"> HP{ .val = <span class="tok-number">1.000000e-270</span>, .off = -<span class="tok-number">4.183001359784432924e-287</span> },</span>
<span class="line" id="L585"> HP{ .val = <span class="tok-number">1.000000e-271</span>, .off = <span class="tok-number">3.697709298708449474e-288</span> },</span>
<span class="line" id="L586"> HP{ .val = <span class="tok-number">1.000000e-272</span>, .off = <span class="tok-number">6.981338739747150474e-289</span> },</span>
<span class="line" id="L587"> HP{ .val = <span class="tok-number">1.000000e-273</span>, .off = -<span class="tok-number">9.436808465446354751e-290</span> },</span>
<span class="line" id="L588"> HP{ .val = <span class="tok-number">1.000000e-274</span>, .off = <span class="tok-number">3.389869038611071740e-291</span> },</span>
<span class="line" id="L589"> HP{ .val = <span class="tok-number">1.000000e-275</span>, .off = <span class="tok-number">6.596538414625427829e-292</span> },</span>
<span class="line" id="L590"> HP{ .val = <span class="tok-number">1.000000e-276</span>, .off = -<span class="tok-number">9.436808465446354618e-293</span> },</span>
<span class="line" id="L591"> HP{ .val = <span class="tok-number">1.000000e-277</span>, .off = <span class="tok-number">3.089243784609725523e-294</span> },</span>
<span class="line" id="L592"> HP{ .val = <span class="tok-number">1.000000e-278</span>, .off = <span class="tok-number">6.220756847123745836e-295</span> },</span>
<span class="line" id="L593"> HP{ .val = <span class="tok-number">1.000000e-279</span>, .off = -<span class="tok-number">5.522417137303829470e-296</span> },</span>
<span class="line" id="L594"> HP{ .val = <span class="tok-number">1.000000e-280</span>, .off = <span class="tok-number">4.263561183052483059e-297</span> },</span>
<span class="line" id="L595"> HP{ .val = <span class="tok-number">1.000000e-281</span>, .off = -<span class="tok-number">1.852675267170212272e-298</span> },</span>
<span class="line" id="L596"> HP{ .val = <span class="tok-number">1.000000e-282</span>, .off = -<span class="tok-number">1.852675267170212378e-299</span> },</span>
<span class="line" id="L597"> HP{ .val = <span class="tok-number">1.000000e-283</span>, .off = <span class="tok-number">5.314789322934508480e-300</span> },</span>
<span class="line" id="L598"> HP{ .val = <span class="tok-number">1.000000e-284</span>, .off = -<span class="tok-number">3.644541414696392675e-301</span> },</span>
<span class="line" id="L599"> HP{ .val = <span class="tok-number">1.000000e-285</span>, .off = -<span class="tok-number">7.377595888709267777e-302</span> },</span>
<span class="line" id="L600"> HP{ .val = <span class="tok-number">1.000000e-286</span>, .off = -<span class="tok-number">5.044436842451220838e-303</span> },</span>
<span class="line" id="L601"> HP{ .val = <span class="tok-number">1.000000e-287</span>, .off = -<span class="tok-number">2.127988034628661760e-304</span> },</span>
<span class="line" id="L602"> HP{ .val = <span class="tok-number">1.000000e-288</span>, .off = -<span class="tok-number">5.773549044406860911e-305</span> },</span>
<span class="line" id="L603"> HP{ .val = <span class="tok-number">1.000000e-289</span>, .off = -<span class="tok-number">1.216597782184112068e-306</span> },</span>
<span class="line" id="L604"> HP{ .val = <span class="tok-number">1.000000e-290</span>, .off = -<span class="tok-number">6.912786859962547924e-307</span> },</span>
<span class="line" id="L605"> HP{ .val = <span class="tok-number">1.000000e-291</span>, .off = <span class="tok-number">3.767567660872018813e-308</span> },</span>
<span class="line" id="L606">};</span>
<span class="line" id="L607"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/fmt | repos/yazap/docs/src/std/fmt/errol/enum3.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> enum3 = [_]<span class="tok-type">u64</span>{</span>
<span class="line" id="L2"> <span class="tok-number">0x4e2e2785c3a2a20b</span>,</span>
<span class="line" id="L3"> <span class="tok-number">0x240a28877a09a4e1</span>,</span>
<span class="line" id="L4"> <span class="tok-number">0x728fca36c06cf106</span>,</span>
<span class="line" id="L5"> <span class="tok-number">0x1016b100e18e5c17</span>,</span>
<span class="line" id="L6"> <span class="tok-number">0x3159190e30e46c1d</span>,</span>
<span class="line" id="L7"> <span class="tok-number">0x64312a13daa46fe4</span>,</span>
<span class="line" id="L8"> <span class="tok-number">0x7c41926c7a7122ba</span>,</span>
<span class="line" id="L9"> <span class="tok-number">0x08667a3c8dc4bc9c</span>,</span>
<span class="line" id="L10"> <span class="tok-number">0x18dde996371c6060</span>,</span>
<span class="line" id="L11"> <span class="tok-number">0x297c2c31a31998ae</span>,</span>
<span class="line" id="L12"> <span class="tok-number">0x368b870de5d93270</span>,</span>
<span class="line" id="L13"> <span class="tok-number">0x57d561def4a9ee32</span>,</span>
<span class="line" id="L14"> <span class="tok-number">0x6d275d226331d03a</span>,</span>
<span class="line" id="L15"> <span class="tok-number">0x76703d7cb98edc59</span>,</span>
<span class="line" id="L16"> <span class="tok-number">0x7ec490abad057752</span>,</span>
<span class="line" id="L17"> <span class="tok-number">0x037be9d5a60850b5</span>,</span>
<span class="line" id="L18"> <span class="tok-number">0x0c63165633977bca</span>,</span>
<span class="line" id="L19"> <span class="tok-number">0x14a048cb468bc209</span>,</span>
<span class="line" id="L20"> <span class="tok-number">0x20dc29bc6879dfcd</span>,</span>
<span class="line" id="L21"> <span class="tok-number">0x2643dc6227de9148</span>,</span>
<span class="line" id="L22"> <span class="tok-number">0x2d64f14348a4c5db</span>,</span>
<span class="line" id="L23"> <span class="tok-number">0x341eef5e1f90ac35</span>,</span>
<span class="line" id="L24"> <span class="tok-number">0x4931159a8bd8a240</span>,</span>
<span class="line" id="L25"> <span class="tok-number">0x503ca9bade45b94a</span>,</span>
<span class="line" id="L26"> <span class="tok-number">0x5c1af5b5378aa2e5</span>,</span>
<span class="line" id="L27"> <span class="tok-number">0x6b4ef9beaa7aa584</span>,</span>
<span class="line" id="L28"> <span class="tok-number">0x6ef1c382c3819a0a</span>,</span>
<span class="line" id="L29"> <span class="tok-number">0x754fe46e378bf133</span>,</span>
<span class="line" id="L30"> <span class="tok-number">0x7ace779fddf21622</span>,</span>
<span class="line" id="L31"> <span class="tok-number">0x7df22815078cb97b</span>,</span>
<span class="line" id="L32"> <span class="tok-number">0x7f33c8eeb77b8d05</span>,</span>
<span class="line" id="L33"> <span class="tok-number">0x011b7aa3d73f6658</span>,</span>
<span class="line" id="L34"> <span class="tok-number">0x06ceb7f2c53db97f</span>,</span>
<span class="line" id="L35"> <span class="tok-number">0x0b8f3d82e9356287</span>,</span>
<span class="line" id="L36"> <span class="tok-number">0x0e304273b18918b0</span>,</span>
<span class="line" id="L37"> <span class="tok-number">0x139fb24e492936f6</span>,</span>
<span class="line" id="L38"> <span class="tok-number">0x176090684f5fe997</span>,</span>
<span class="line" id="L39"> <span class="tok-number">0x1e3035e7b5183922</span>,</span>
<span class="line" id="L40"> <span class="tok-number">0x220ce77c2b3328fc</span>,</span>
<span class="line" id="L41"> <span class="tok-number">0x246441ed79830182</span>,</span>
<span class="line" id="L42"> <span class="tok-number">0x279b5cd8bbdd8770</span>,</span>
<span class="line" id="L43"> <span class="tok-number">0x2cc7c3fba45c1272</span>,</span>
<span class="line" id="L44"> <span class="tok-number">0x3081eab25ad0fcf7</span>,</span>
<span class="line" id="L45"> <span class="tok-number">0x329f5a18504dfaac</span>,</span>
<span class="line" id="L46"> <span class="tok-number">0x347eef5e1f90ac35</span>,</span>
<span class="line" id="L47"> <span class="tok-number">0x3a978cfcab31064c</span>,</span>
<span class="line" id="L48"> <span class="tok-number">0x4baa32ac316fb3ab</span>,</span>
<span class="line" id="L49"> <span class="tok-number">0x4eb9a2c2a34ac2f9</span>,</span>
<span class="line" id="L50"> <span class="tok-number">0x522f6a5025e71a61</span>,</span>
<span class="line" id="L51"> <span class="tok-number">0x5935ede8cce30845</span>,</span>
<span class="line" id="L52"> <span class="tok-number">0x5f9aeac2d1ea2695</span>,</span>
<span class="line" id="L53"> <span class="tok-number">0x6820ee7811241ad3</span>,</span>
<span class="line" id="L54"> <span class="tok-number">0x6c06c9e14b7c22c3</span>,</span>
<span class="line" id="L55"> <span class="tok-number">0x6e5a2fbffdb7580c</span>,</span>
<span class="line" id="L56"> <span class="tok-number">0x71160cf8f38b0465</span>,</span>
<span class="line" id="L57"> <span class="tok-number">0x738a37935f3b71c9</span>,</span>
<span class="line" id="L58"> <span class="tok-number">0x756fe46e378bf133</span>,</span>
<span class="line" id="L59"> <span class="tok-number">0x7856d2aa2fc5f2b5</span>,</span>
<span class="line" id="L60"> <span class="tok-number">0x7bd3b063946e10ae</span>,</span>
<span class="line" id="L61"> <span class="tok-number">0x7d8220e1772428d7</span>,</span>
<span class="line" id="L62"> <span class="tok-number">0x7e222815078cb97b</span>,</span>
<span class="line" id="L63"> <span class="tok-number">0x7ef5bc471d5456c7</span>,</span>
<span class="line" id="L64"> <span class="tok-number">0x7fb82baa4ae611dc</span>,</span>
<span class="line" id="L65"> <span class="tok-number">0x00bb7aa3d73f6658</span>,</span>
<span class="line" id="L66"> <span class="tok-number">0x0190a0f3c55062c5</span>,</span>
<span class="line" id="L67"> <span class="tok-number">0x05898e3445512a6e</span>,</span>
<span class="line" id="L68"> <span class="tok-number">0x07bfe89cf1bd76ac</span>,</span>
<span class="line" id="L69"> <span class="tok-number">0x08dfa7ebe304ee3e</span>,</span>
<span class="line" id="L70"> <span class="tok-number">0x0c43165633977bca</span>,</span>
<span class="line" id="L71"> <span class="tok-number">0x0e104273b18918b0</span>,</span>
<span class="line" id="L72"> <span class="tok-number">0x0fd6ba8608faa6a9</span>,</span>
<span class="line" id="L73"> <span class="tok-number">0x10b4139a6b17b224</span>,</span>
<span class="line" id="L74"> <span class="tok-number">0x1466cc4fc92a0fa6</span>,</span>
<span class="line" id="L75"> <span class="tok-number">0x162ba6008389068a</span>,</span>
<span class="line" id="L76"> <span class="tok-number">0x1804116d591ef1fb</span>,</span>
<span class="line" id="L77"> <span class="tok-number">0x1c513770474911bd</span>,</span>
<span class="line" id="L78"> <span class="tok-number">0x1e7035e7b5183923</span>,</span>
<span class="line" id="L79"> <span class="tok-number">0x2114dab846e19e25</span>,</span>
<span class="line" id="L80"> <span class="tok-number">0x222ce77c2b3328fc</span>,</span>
<span class="line" id="L81"> <span class="tok-number">0x244441ed79830182</span>,</span>
<span class="line" id="L82"> <span class="tok-number">0x249b23b50fc204db</span>,</span>
<span class="line" id="L83"> <span class="tok-number">0x278aacfcb88c92d6</span>,</span>
<span class="line" id="L84"> <span class="tok-number">0x289d52af46e5fa6a</span>,</span>
<span class="line" id="L85"> <span class="tok-number">0x2bdec922478c0421</span>,</span>
<span class="line" id="L86"> <span class="tok-number">0x2d44f14348a4c5dc</span>,</span>
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<span class="line" id="L296"> <span class="tok-number">0x149048cb468bc209</span>,</span>
<span class="line" id="L297"> <span class="tok-number">0x1504c0b3a63c1444</span>,</span>
<span class="line" id="L298"> <span class="tok-number">0x161ba6008389068a</span>,</span>
<span class="line" id="L299"> <span class="tok-number">0x168cfab1a09b49c4</span>,</span>
<span class="line" id="L300"> <span class="tok-number">0x175090684f5fe998</span>,</span>
<span class="line" id="L301"> <span class="tok-number">0x176090684f5fe998</span>,</span>
<span class="line" id="L302"> <span class="tok-number">0x17f4116d591ef1fb</span>,</span>
<span class="line" id="L303"> <span class="tok-number">0x18a710b7a2ef18b7</span>,</span>
<span class="line" id="L304"> <span class="tok-number">0x18d99fccca44882a</span>,</span>
<span class="line" id="L305"> <span class="tok-number">0x199a2cf604c30d3f</span>,</span>
<span class="line" id="L306"> <span class="tok-number">0x1b5ebddc6593c857</span>,</span>
<span class="line" id="L307"> <span class="tok-number">0x1d1b1ad9101b1bfd</span>,</span>
<span class="line" id="L308"> <span class="tok-number">0x1d3b1ad9101b1bfd</span>,</span>
<span class="line" id="L309"> <span class="tok-number">0x1e4035e7b5183923</span>,</span>
<span class="line" id="L310"> <span class="tok-number">0x1e6035e7b5183923</span>,</span>
<span class="line" id="L311"> <span class="tok-number">0x1fd5a79c4e71d028</span>,</span>
<span class="line" id="L312"> <span class="tok-number">0x20cc29bc6879dfcd</span>,</span>
<span class="line" id="L313"> <span class="tok-number">0x20e8823a57adbef8</span>,</span>
<span class="line" id="L314"> <span class="tok-number">0x2104dab846e19e25</span>,</span>
<span class="line" id="L315"> <span class="tok-number">0x2124dab846e19e25</span>,</span>
<span class="line" id="L316"> <span class="tok-number">0x220ce77c2b3328fb</span>,</span>
<span class="line" id="L317"> <span class="tok-number">0x221ce77c2b3328fb</span>,</span>
<span class="line" id="L318"> <span class="tok-number">0x222ce77c2b3328fb</span>,</span>
<span class="line" id="L319"> <span class="tok-number">0x229197b290631476</span>,</span>
<span class="line" id="L320"> <span class="tok-number">0x240a28877a09a4e0</span>,</span>
<span class="line" id="L321"> <span class="tok-number">0x243441ed79830181</span>,</span>
<span class="line" id="L322"> <span class="tok-number">0x244441ed79830181</span>,</span>
<span class="line" id="L323"> <span class="tok-number">0x245441ed79830181</span>,</span>
<span class="line" id="L324"> <span class="tok-number">0x246441ed79830181</span>,</span>
<span class="line" id="L325"> <span class="tok-number">0x247441ed79830181</span>,</span>
<span class="line" id="L326"> <span class="tok-number">0x248b23b50fc204db</span>,</span>
<span class="line" id="L327"> <span class="tok-number">0x24ab23b50fc204db</span>,</span>
<span class="line" id="L328"> <span class="tok-number">0x2633dc6227de9148</span>,</span>
<span class="line" id="L329"> <span class="tok-number">0x2653dc6227de9148</span>,</span>
<span class="line" id="L330"> <span class="tok-number">0x277aacfcb88c92d7</span>,</span>
<span class="line" id="L331"> <span class="tok-number">0x278aacfcb88c92d7</span>,</span>
<span class="line" id="L332"> <span class="tok-number">0x279aacfcb88c92d7</span>,</span>
<span class="line" id="L333"> <span class="tok-number">0x27bbb4c6bd8601bd</span>,</span>
<span class="line" id="L334"> <span class="tok-number">0x289d52af46e5fa69</span>,</span>
<span class="line" id="L335"> <span class="tok-number">0x28b04a616046e074</span>,</span>
<span class="line" id="L336"> <span class="tok-number">0x28d04a616046e074</span>,</span>
<span class="line" id="L337"> <span class="tok-number">0x2a3eeff57768f88c</span>,</span>
<span class="line" id="L338"> <span class="tok-number">0x2b8e3a0aeed7be19</span>,</span>
<span class="line" id="L339"> <span class="tok-number">0x2beec922478c0421</span>,</span>
<span class="line" id="L340"> <span class="tok-number">0x2cc7c3fba45c1271</span>,</span>
<span class="line" id="L341"> <span class="tok-number">0x2cf4f14348a4c5db</span>,</span>
<span class="line" id="L342"> <span class="tok-number">0x2d44f14348a4c5db</span>,</span>
<span class="line" id="L343"> <span class="tok-number">0x2d54f14348a4c5db</span>,</span>
<span class="line" id="L344"> <span class="tok-number">0x2d5a8c931c19b77a</span>,</span>
<span class="line" id="L345"> <span class="tok-number">0x2d64f14348a4c5dc</span>,</span>
<span class="line" id="L346"> <span class="tok-number">0x2efc1249e96b6d8d</span>,</span>
<span class="line" id="L347"> <span class="tok-number">0x2f0f6b23cfe98807</span>,</span>
<span class="line" id="L348"> <span class="tok-number">0x2fe91b9de4d5cf31</span>,</span>
<span class="line" id="L349"> <span class="tok-number">0x308ddc7e975c5045</span>,</span>
<span class="line" id="L350"> <span class="tok-number">0x309ddc7e975c5045</span>,</span>
<span class="line" id="L351"> <span class="tok-number">0x30bddc7e975c5045</span>,</span>
<span class="line" id="L352"> <span class="tok-number">0x3150ed9bd6bfd003</span>,</span>
<span class="line" id="L353"> <span class="tok-number">0x317d2ec75df6ba2a</span>,</span>
<span class="line" id="L354"> <span class="tok-number">0x321aedaa0fc32ac8</span>,</span>
<span class="line" id="L355"> <span class="tok-number">0x32448050091c3c24</span>,</span>
<span class="line" id="L356"> <span class="tok-number">0x328f5a18504dfaac</span>,</span>
<span class="line" id="L357"> <span class="tok-number">0x3336dca59d035820</span>,</span>
<span class="line" id="L358"> <span class="tok-number">0x33ceef5e1f90ac34</span>,</span>
<span class="line" id="L359"> <span class="tok-number">0x33eeef5e1f90ac35</span>,</span>
<span class="line" id="L360"> <span class="tok-number">0x340eef5e1f90ac35</span>,</span>
<span class="line" id="L361"> <span class="tok-number">0x34228f9edfbd3420</span>,</span>
<span class="line" id="L362"> <span class="tok-number">0x34328f9edfbd3420</span>,</span>
<span class="line" id="L363"> <span class="tok-number">0x344eef5e1f90ac35</span>,</span>
<span class="line" id="L364"> <span class="tok-number">0x346eef5e1f90ac35</span>,</span>
<span class="line" id="L365"> <span class="tok-number">0x35008621c4199208</span>,</span>
<span class="line" id="L366"> <span class="tok-number">0x35e0ac2e7f90b8a3</span>,</span>
<span class="line" id="L367"> <span class="tok-number">0x361dde4a4ab13e09</span>,</span>
<span class="line" id="L368"> <span class="tok-number">0x367b870de5d93270</span>,</span>
<span class="line" id="L369"> <span class="tok-number">0x375b20c2f4f8d49f</span>,</span>
<span class="line" id="L370"> <span class="tok-number">0x37f25d342b1e33e5</span>,</span>
<span class="line" id="L371"> <span class="tok-number">0x3854faba79ea92ed</span>,</span>
<span class="line" id="L372"> <span class="tok-number">0x3864faba79ea92ed</span>,</span>
<span class="line" id="L373"> <span class="tok-number">0x3a978cfcab31064d</span>,</span>
<span class="line" id="L374"> <span class="tok-number">0x3aa78cfcab31064d</span>,</span>
<span class="line" id="L375"> <span class="tok-number">0x490cd230a7ff47c3</span>,</span>
<span class="line" id="L376"> <span class="tok-number">0x4929d9577de925d5</span>,</span>
<span class="line" id="L377"> <span class="tok-number">0x4939d9577de925d5</span>,</span>
<span class="line" id="L378"> <span class="tok-number">0x49dcadd6dd730c96</span>,</span>
<span class="line" id="L379"> <span class="tok-number">0x4a7bb6979ae39c49</span>,</span>
<span class="line" id="L380"> <span class="tok-number">0x4b9a32ac316fb3ac</span>,</span>
<span class="line" id="L381"> <span class="tok-number">0x4baa32ac316fb3ac</span>,</span>
<span class="line" id="L382"> <span class="tok-number">0x4bba32ac316fb3ac</span>,</span>
<span class="line" id="L383"> <span class="tok-number">0x4cef20b1a0d7f626</span>,</span>
<span class="line" id="L384"> <span class="tok-number">0x4e2e2785c3a2a20a</span>,</span>
<span class="line" id="L385"> <span class="tok-number">0x4e3e2785c3a2a20a</span>,</span>
<span class="line" id="L386"> <span class="tok-number">0x4e6454b1aef62c8d</span>,</span>
<span class="line" id="L387"> <span class="tok-number">0x4e90fde34c996086</span>,</span>
<span class="line" id="L388"> <span class="tok-number">0x4ea9a2c2a34ac2fa</span>,</span>
<span class="line" id="L389"> <span class="tok-number">0x4eb9a2c2a34ac2fa</span>,</span>
<span class="line" id="L390"> <span class="tok-number">0x4ec9a2c2a34ac2fa</span>,</span>
<span class="line" id="L391"> <span class="tok-number">0x4ed9a2c2a34ac2fa</span>,</span>
<span class="line" id="L392"> <span class="tok-number">0x4f38750ea732fdae</span>,</span>
<span class="line" id="L393"> <span class="tok-number">0x504ca9bade45b94a</span>,</span>
<span class="line" id="L394"> <span class="tok-number">0x514843e10734fa57</span>,</span>
<span class="line" id="L395"> <span class="tok-number">0x51b3274280201a89</span>,</span>
<span class="line" id="L396"> <span class="tok-number">0x521f6a5025e71a61</span>,</span>
<span class="line" id="L397"> <span class="tok-number">0x52c6a47d4e7ec633</span>,</span>
<span class="line" id="L398"> <span class="tok-number">0x55793ba3249a8511</span>,</span>
<span class="line" id="L399"> <span class="tok-number">0x575fe0403124a00e</span>,</span>
<span class="line" id="L400"> <span class="tok-number">0x57863ae2caed4528</span>,</span>
<span class="line" id="L401"> <span class="tok-number">0x57e561def4a9ee32</span>,</span>
<span class="line" id="L402"> <span class="tok-number">0x580561def4a9ee31</span>,</span>
<span class="line" id="L403"> <span class="tok-number">0x582561def4a9ee31</span>,</span>
<span class="line" id="L404"> <span class="tok-number">0x585561def4a9ee31</span>,</span>
<span class="line" id="L405"> <span class="tok-number">0x59d0dd8f2788d699</span>,</span>
<span class="line" id="L406"> <span class="tok-number">0x5b55ed1f039cebfe</span>,</span>
<span class="line" id="L407"> <span class="tok-number">0x5beaf5b5378aa2e5</span>,</span>
<span class="line" id="L408"> <span class="tok-number">0x5c0af5b5378aa2e5</span>,</span>
<span class="line" id="L409"> <span class="tok-number">0x5c4ef3052ef0a361</span>,</span>
<span class="line" id="L410"> <span class="tok-number">0x5e1780695036a679</span>,</span>
<span class="line" id="L411"> <span class="tok-number">0x5e54ec8fd70420c7</span>,</span>
<span class="line" id="L412"> <span class="tok-number">0x5e6b5e2f86026f05</span>,</span>
<span class="line" id="L413"> <span class="tok-number">0x5faaeac2d1ea2695</span>,</span>
<span class="line" id="L414"> <span class="tok-number">0x611260322d04d50b</span>,</span>
<span class="line" id="L415"> <span class="tok-number">0x625be064a3fb2725</span>,</span>
<span class="line" id="L416"> <span class="tok-number">0x64212a13daa46fe4</span>,</span>
<span class="line" id="L417"> <span class="tok-number">0x671dcfee6690ffc6</span>,</span>
<span class="line" id="L418"> <span class="tok-number">0x673dcfee6690ffc6</span>,</span>
<span class="line" id="L419"> <span class="tok-number">0x675dcfee6690ffc6</span>,</span>
<span class="line" id="L420"> <span class="tok-number">0x678a77581053543b</span>,</span>
<span class="line" id="L421"> <span class="tok-number">0x682d3683fa3d1ee0</span>,</span>
<span class="line" id="L422"> <span class="tok-number">0x699cb490951e8515</span>,</span>
<span class="line" id="L423"> <span class="tok-number">0x6b3ef9beaa7aa583</span>,</span>
<span class="line" id="L424"> <span class="tok-number">0x6b4ef9beaa7aa583</span>,</span>
<span class="line" id="L425"> <span class="tok-number">0x6b7896beb0c66eb9</span>,</span>
<span class="line" id="L426"> <span class="tok-number">0x6bdf20938e7414bb</span>,</span>
<span class="line" id="L427"> <span class="tok-number">0x6bef20938e7414bb</span>,</span>
<span class="line" id="L428"> <span class="tok-number">0x6bf6c9e14b7c22c4</span>,</span>
<span class="line" id="L429"> <span class="tok-number">0x6c06c9e14b7c22c4</span>,</span>
<span class="line" id="L430"> <span class="tok-number">0x6c16c9e14b7c22c4</span>,</span>
<span class="line" id="L431"> <span class="tok-number">0x6cf75d226331d03a</span>,</span>
<span class="line" id="L432"> <span class="tok-number">0x6d175d226331d03a</span>,</span>
<span class="line" id="L433"> <span class="tok-number">0x6d4b9445072f4374</span>,</span>
<span class="line" id="L434">};</span>
<span class="line" id="L435"></span>
<span class="line" id="L436"><span class="tok-kw">const</span> Slab = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L437"> str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L438"> exp: <span class="tok-type">i32</span>,</span>
<span class="line" id="L439">};</span>
<span class="line" id="L440"></span>
<span class="line" id="L441"><span class="tok-kw">fn</span> <span class="tok-fn">slab</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, exp: <span class="tok-type">i32</span>) Slab {</span>
<span class="line" id="L442"> <span class="tok-kw">return</span> Slab{</span>
<span class="line" id="L443"> .str = str,</span>
<span class="line" id="L444"> .exp = exp,</span>
<span class="line" id="L445"> };</span>
<span class="line" id="L446">}</span>
<span class="line" id="L447"></span>
<span class="line" id="L448"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> enum3_data = [_]Slab{</span>
<span class="line" id="L449"> slab(<span class="tok-str">"40648030339495312"</span>, <span class="tok-number">69</span>),</span>
<span class="line" id="L450"> slab(<span class="tok-str">"4498645355592131"</span>, -<span class="tok-number">134</span>),</span>
<span class="line" id="L451"> slab(<span class="tok-str">"678321594594593"</span>, <span class="tok-number">244</span>),</span>
<span class="line" id="L452"> slab(<span class="tok-str">"36539702510912277"</span>, -<span class="tok-number">230</span>),</span>
<span class="line" id="L453"> slab(<span class="tok-str">"56819570380646536"</span>, -<span class="tok-number">70</span>),</span>
<span class="line" id="L454"> slab(<span class="tok-str">"42452693975546964"</span>, <span class="tok-number">175</span>),</span>
<span class="line" id="L455"> slab(<span class="tok-str">"34248868699178663"</span>, <span class="tok-number">291</span>),</span>
<span class="line" id="L456"> slab(<span class="tok-str">"34037810581283983"</span>, -<span class="tok-number">267</span>),</span>
<span class="line" id="L457"> slab(<span class="tok-str">"67135881167178176"</span>, -<span class="tok-number">188</span>),</span>
<span class="line" id="L458"> slab(<span class="tok-str">"74973710847373845"</span>, -<span class="tok-number">108</span>),</span>
<span class="line" id="L459"> slab(<span class="tok-str">"60272377639347644"</span>, -<span class="tok-number">45</span>),</span>
<span class="line" id="L460"> slab(<span class="tok-str">"1316415380484425"</span>, <span class="tok-number">116</span>),</span>
<span class="line" id="L461"> slab(<span class="tok-str">"64433314612521525"</span>, <span class="tok-number">218</span>),</span>
<span class="line" id="L462"> slab(<span class="tok-str">"31961502891542243"</span>, <span class="tok-number">263</span>),</span>
<span class="line" id="L463"> slab(<span class="tok-str">"4407140524515149"</span>, <span class="tok-number">303</span>),</span>
<span class="line" id="L464"> slab(<span class="tok-str">"69928982131052126"</span>, -<span class="tok-number">291</span>),</span>
<span class="line" id="L465"> slab(<span class="tok-str">"5331838923808276"</span>, -<span class="tok-number">248</span>),</span>
<span class="line" id="L466"> slab(<span class="tok-str">"24766435002945523"</span>, -<span class="tok-number">208</span>),</span>
<span class="line" id="L467"> slab(<span class="tok-str">"21509066976048781"</span>, -<span class="tok-number">149</span>),</span>
<span class="line" id="L468"> slab(<span class="tok-str">"2347200170470694"</span>, -<span class="tok-number">123</span>),</span>
<span class="line" id="L469"> slab(<span class="tok-str">"51404180294474556"</span>, -<span class="tok-number">89</span>),</span>
<span class="line" id="L470"> slab(<span class="tok-str">"12320586499023201"</span>, -<span class="tok-number">56</span>),</span>
<span class="line" id="L471"> slab(<span class="tok-str">"38099461575161174"</span>, <span class="tok-number">45</span>),</span>
<span class="line" id="L472"> slab(<span class="tok-str">"3318949537676913"</span>, <span class="tok-number">79</span>),</span>
<span class="line" id="L473"> slab(<span class="tok-str">"48988560059074597"</span>, <span class="tok-number">136</span>),</span>
<span class="line" id="L474"> slab(<span class="tok-str">"7955843973866726"</span>, <span class="tok-number">209</span>),</span>
<span class="line" id="L475"> slab(<span class="tok-str">"2630089515909384"</span>, <span class="tok-number">227</span>),</span>
<span class="line" id="L476"> slab(<span class="tok-str">"11971601492124911"</span>, <span class="tok-number">258</span>),</span>
<span class="line" id="L477"> slab(<span class="tok-str">"35394816534699092"</span>, <span class="tok-number">284</span>),</span>
<span class="line" id="L478"> slab(<span class="tok-str">"47497368114750945"</span>, <span class="tok-number">299</span>),</span>
<span class="line" id="L479"> slab(<span class="tok-str">"54271187548763685"</span>, <span class="tok-number">305</span>),</span>
<span class="line" id="L480"> slab(<span class="tok-str">"2504414972009504"</span>, -<span class="tok-number">302</span>),</span>
<span class="line" id="L481"> slab(<span class="tok-str">"69316187906522606"</span>, -<span class="tok-number">275</span>),</span>
<span class="line" id="L482"> slab(<span class="tok-str">"53263359599109627"</span>, -<span class="tok-number">252</span>),</span>
<span class="line" id="L483"> slab(<span class="tok-str">"24384437085962037"</span>, -<span class="tok-number">239</span>),</span>
<span class="line" id="L484"> slab(<span class="tok-str">"3677854139813342"</span>, -<span class="tok-number">213</span>),</span>
<span class="line" id="L485"> slab(<span class="tok-str">"44318030915155535"</span>, -<span class="tok-number">195</span>),</span>
<span class="line" id="L486"> slab(<span class="tok-str">"28150140033551147"</span>, -<span class="tok-number">162</span>),</span>
<span class="line" id="L487"> slab(<span class="tok-str">"1157373742186464"</span>, -<span class="tok-number">143</span>),</span>
<span class="line" id="L488"> slab(<span class="tok-str">"2229658838863212"</span>, -<span class="tok-number">132</span>),</span>
<span class="line" id="L489"> slab(<span class="tok-str">"67817280930489786"</span>, -<span class="tok-number">117</span>),</span>
<span class="line" id="L490"> slab(<span class="tok-str">"56966478488538934"</span>, -<span class="tok-number">92</span>),</span>
<span class="line" id="L491"> slab(<span class="tok-str">"49514357246452655"</span>, -<span class="tok-number">74</span>),</span>
<span class="line" id="L492"> slab(<span class="tok-str">"74426102121433776"</span>, -<span class="tok-number">64</span>),</span>
<span class="line" id="L493"> slab(<span class="tok-str">"78851753593748485"</span>, -<span class="tok-number">55</span>),</span>
<span class="line" id="L494"> slab(<span class="tok-str">"19024128529074359"</span>, -<span class="tok-number">25</span>),</span>
<span class="line" id="L495"> slab(<span class="tok-str">"32118580932839778"</span>, <span class="tok-number">57</span>),</span>
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<span class="line" id="L825"> slab(<span class="tok-str">"65491395154772944"</span>, <span class="tok-number">48</span>),</span>
<span class="line" id="L826"> slab(<span class="tok-str">"64804738293589064"</span>, <span class="tok-number">51</span>),</span>
<span class="line" id="L827"> slab(<span class="tok-str">"1605929046641989"</span>, <span class="tok-number">57</span>),</span>
<span class="line" id="L828"> slab(<span class="tok-str">"3211858093283978"</span>, <span class="tok-number">57</span>),</span>
<span class="line" id="L829"> slab(<span class="tok-str">"6423716186567956"</span>, <span class="tok-number">57</span>),</span>
<span class="line" id="L830"> slab(<span class="tok-str">"4001624164855121"</span>, <span class="tok-number">63</span>),</span>
<span class="line" id="L831"> slab(<span class="tok-str">"4064803033949531"</span>, <span class="tok-number">69</span>),</span>
<span class="line" id="L832"> slab(<span class="tok-str">"8129606067899062"</span>, <span class="tok-number">69</span>),</span>
<span class="line" id="L833"> slab(<span class="tok-str">"4384946084578497"</span>, <span class="tok-number">70</span>),</span>
<span class="line" id="L834"> slab(<span class="tok-str">"2931818636417522"</span>, <span class="tok-number">71</span>),</span>
<span class="line" id="L835"> slab(<span class="tok-str">"884658338944371"</span>, <span class="tok-number">71</span>),</span>
<span class="line" id="L836"> slab(<span class="tok-str">"1769316677888742"</span>, <span class="tok-number">72</span>),</span>
<span class="line" id="L837"> slab(<span class="tok-str">"3538633355777484"</span>, <span class="tok-number">72</span>),</span>
<span class="line" id="L838"> slab(<span class="tok-str">"7077266711554968"</span>, <span class="tok-number">72</span>),</span>
<span class="line" id="L839"> slab(<span class="tok-str">"43212228924638223"</span>, <span class="tok-number">74</span>),</span>
<span class="line" id="L840"> slab(<span class="tok-str">"6637899075353826"</span>, <span class="tok-number">79</span>),</span>
<span class="line" id="L841"> slab(<span class="tok-str">"36827466208126543"</span>, <span class="tok-number">84</span>),</span>
<span class="line" id="L842"> slab(<span class="tok-str">"37208633675386937"</span>, <span class="tok-number">86</span>),</span>
<span class="line" id="L843"> slab(<span class="tok-str">"39058878597126768"</span>, <span class="tok-number">88</span>),</span>
<span class="line" id="L844"> slab(<span class="tok-str">"57654578150150385"</span>, <span class="tok-number">91</span>),</span>
<span class="line" id="L845"> slab(<span class="tok-str">"5651538526623358"</span>, <span class="tok-number">104</span>),</span>
<span class="line" id="L846"> slab(<span class="tok-str">"76658785488667984"</span>, <span class="tok-number">113</span>),</span>
<span class="line" id="L847"> slab(<span class="tok-str">"4276892125056322"</span>, <span class="tok-number">114</span>),</span>
<span class="line" id="L848"> slab(<span class="tok-str">"263283076096885"</span>, <span class="tok-number">116</span>),</span>
<span class="line" id="L849"> slab(<span class="tok-str">"10531323043875399"</span>, <span class="tok-number">117</span>),</span>
<span class="line" id="L850"> slab(<span class="tok-str">"42125292175501597"</span>, <span class="tok-number">117</span>),</span>
<span class="line" id="L851"> slab(<span class="tok-str">"33700233740401277"</span>, <span class="tok-number">118</span>),</span>
<span class="line" id="L852"> slab(<span class="tok-str">"44596066840334405"</span>, <span class="tok-number">125</span>),</span>
<span class="line" id="L853"> slab(<span class="tok-str">"9727081811829489"</span>, <span class="tok-number">132</span>),</span>
<span class="line" id="L854"> slab(<span class="tok-str">"61235700073843246"</span>, <span class="tok-number">135</span>),</span>
<span class="line" id="L855"> slab(<span class="tok-str">"24494280029537298"</span>, <span class="tok-number">136</span>),</span>
<span class="line" id="L856"> slab(<span class="tok-str">"4499029632233837"</span>, <span class="tok-number">137</span>),</span>
<span class="line" id="L857"> slab(<span class="tok-str">"18341526859645389"</span>, <span class="tok-number">146</span>),</span>
<span class="line" id="L858"> slab(<span class="tok-str">"2612787385440923"</span>, <span class="tok-number">147</span>),</span>
<span class="line" id="L859"> slab(<span class="tok-str">"6834859331393543"</span>, <span class="tok-number">147</span>),</span>
<span class="line" id="L860"> slab(<span class="tok-str">"70487976217301855"</span>, <span class="tok-number">153</span>),</span>
<span class="line" id="L861"> slab(<span class="tok-str">"40366692112133834"</span>, <span class="tok-number">160</span>),</span>
<span class="line" id="L862"> slab(<span class="tok-str">"64212034966059256"</span>, <span class="tok-number">166</span>),</span>
<span class="line" id="L863"> slab(<span class="tok-str">"21226346987773482"</span>, <span class="tok-number">175</span>),</span>
<span class="line" id="L864"> slab(<span class="tok-str">"51886190678901447"</span>, <span class="tok-number">189</span>),</span>
<span class="line" id="L865"> slab(<span class="tok-str">"20754476271560579"</span>, <span class="tok-number">190</span>),</span>
<span class="line" id="L866"> slab(<span class="tok-str">"83017905086242315"</span>, <span class="tok-number">190</span>),</span>
<span class="line" id="L867"> slab(<span class="tok-str">"58960160560399056"</span>, <span class="tok-number">191</span>),</span>
<span class="line" id="L868"> slab(<span class="tok-str">"66641177824100826"</span>, <span class="tok-number">194</span>),</span>
<span class="line" id="L869"> slab(<span class="tok-str">"5493127645170153"</span>, <span class="tok-number">201</span>),</span>
<span class="line" id="L870"> slab(<span class="tok-str">"39779219869333628"</span>, <span class="tok-number">209</span>),</span>
<span class="line" id="L871"> slab(<span class="tok-str">"79558439738667255"</span>, <span class="tok-number">209</span>),</span>
<span class="line" id="L872"> slab(<span class="tok-str">"50523702331566894"</span>, <span class="tok-number">210</span>),</span>
<span class="line" id="L873"> slab(<span class="tok-str">"40933393326155808"</span>, <span class="tok-number">212</span>),</span>
<span class="line" id="L874"> slab(<span class="tok-str">"81866786652311615"</span>, <span class="tok-number">212</span>),</span>
<span class="line" id="L875"> slab(<span class="tok-str">"11987110132312231"</span>, <span class="tok-number">213</span>),</span>
<span class="line" id="L876"> slab(<span class="tok-str">"23974220264624462"</span>, <span class="tok-number">213</span>),</span>
<span class="line" id="L877"> slab(<span class="tok-str">"47948440529248924"</span>, <span class="tok-number">213</span>),</span>
<span class="line" id="L878"> slab(<span class="tok-str">"8054164326565191"</span>, <span class="tok-number">217</span>),</span>
<span class="line" id="L879"> slab(<span class="tok-str">"32216657306260762"</span>, <span class="tok-number">218</span>),</span>
<span class="line" id="L880"> slab(<span class="tok-str">"30423431424080128"</span>, <span class="tok-number">219</span>),</span>
<span class="line" id="L881">};</span>
<span class="line" id="L882"></span>
</code></pre></body>
</html> |
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> os = std.os;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> windows = os.windows;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> maxInt = std.math.maxInt;</span>
<span class="line" id="L9"><span class="tok-kw">const</span> Thread = std.Thread;</span>
<span class="line" id="L10"><span class="tok-kw">const</span> Atomic = std.atomic.Atomic;</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"><span class="tok-kw">const</span> is_windows = builtin.os.tag == .windows;</span>
<span class="line" id="L13"></span>
<span class="line" id="L14"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Loop = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L15"> next_tick_queue: std.atomic.Queue(<span class="tok-kw">anyframe</span>),</span>
<span class="line" id="L16"> os_data: OsData,</span>
<span class="line" id="L17"> final_resume_node: ResumeNode,</span>
<span class="line" id="L18"> pending_event_count: <span class="tok-type">usize</span>,</span>
<span class="line" id="L19"> extra_threads: []Thread,</span>
<span class="line" id="L20"> <span class="tok-comment">/// TODO change this to a pool of configurable number of threads</span></span>
<span class="line" id="L21"> <span class="tok-comment">/// and rename it to be not file-system-specific. it will become</span></span>
<span class="line" id="L22"> <span class="tok-comment">/// a thread pool for turning non-CPU-bound blocking things into</span></span>
<span class="line" id="L23"> <span class="tok-comment">/// async things. A fallback for any missing OS-specific API.</span></span>
<span class="line" id="L24"> fs_thread: Thread,</span>
<span class="line" id="L25"> fs_queue: std.atomic.Queue(Request),</span>
<span class="line" id="L26"> fs_end_request: Request.Node,</span>
<span class="line" id="L27"> fs_thread_wakeup: std.Thread.ResetEvent,</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"> <span class="tok-comment">/// For resources that have the same lifetime as the `Loop`.</span></span>
<span class="line" id="L30"> <span class="tok-comment">/// This is only used by `Loop` for the thread pool and associated resources.</span></span>
<span class="line" id="L31"> arena: std.heap.ArenaAllocator,</span>
<span class="line" id="L32"></span>
<span class="line" id="L33"> <span class="tok-comment">/// State which manages frames that are sleeping on timers</span></span>
<span class="line" id="L34"> delay_queue: DelayQueue,</span>
<span class="line" id="L35"></span>
<span class="line" id="L36"> <span class="tok-comment">/// Pre-allocated eventfds. All permanently active.</span></span>
<span class="line" id="L37"> <span class="tok-comment">/// This is how `Loop` sends promises to be resumed on other threads.</span></span>
<span class="line" id="L38"> available_eventfd_resume_nodes: std.atomic.Stack(ResumeNode.EventFd),</span>
<span class="line" id="L39"> eventfd_resume_nodes: []std.atomic.Stack(ResumeNode.EventFd).Node,</span>
<span class="line" id="L40"></span>
<span class="line" id="L41"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> NextTickNode = std.atomic.Queue(<span class="tok-kw">anyframe</span>).Node;</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ResumeNode = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L44"> id: Id,</span>
<span class="line" id="L45"> handle: <span class="tok-kw">anyframe</span>,</span>
<span class="line" id="L46"> overlapped: Overlapped,</span>
<span class="line" id="L47"></span>
<span class="line" id="L48"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> overlapped_init = <span class="tok-kw">switch</span> (builtin.os.tag) {</span>
<span class="line" id="L49"> .windows => windows.OVERLAPPED{</span>
<span class="line" id="L50"> .Internal = <span class="tok-number">0</span>,</span>
<span class="line" id="L51"> .InternalHigh = <span class="tok-number">0</span>,</span>
<span class="line" id="L52"> .DUMMYUNIONNAME = .{</span>
<span class="line" id="L53"> .DUMMYSTRUCTNAME = .{</span>
<span class="line" id="L54"> .Offset = <span class="tok-number">0</span>,</span>
<span class="line" id="L55"> .OffsetHigh = <span class="tok-number">0</span>,</span>
<span class="line" id="L56"> },</span>
<span class="line" id="L57"> },</span>
<span class="line" id="L58"> .hEvent = <span class="tok-null">null</span>,</span>
<span class="line" id="L59"> },</span>
<span class="line" id="L60"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L61"> };</span>
<span class="line" id="L62"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Overlapped = <span class="tok-builtin">@TypeOf</span>(overlapped_init);</span>
<span class="line" id="L63"></span>
<span class="line" id="L64"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Id = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L65"> basic,</span>
<span class="line" id="L66"> stop,</span>
<span class="line" id="L67"> event_fd,</span>
<span class="line" id="L68"> };</span>
<span class="line" id="L69"></span>
<span class="line" id="L70"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> EventFd = <span class="tok-kw">switch</span> (builtin.os.tag) {</span>
<span class="line" id="L71"> .macos, .ios, .tvos, .watchos, .freebsd, .netbsd, .dragonfly, .openbsd => KEventFd,</span>
<span class="line" id="L72"> .linux => <span class="tok-kw">struct</span> {</span>
<span class="line" id="L73"> base: ResumeNode,</span>
<span class="line" id="L74"> epoll_op: <span class="tok-type">u32</span>,</span>
<span class="line" id="L75"> eventfd: <span class="tok-type">i32</span>,</span>
<span class="line" id="L76"> },</span>
<span class="line" id="L77"> .windows => <span class="tok-kw">struct</span> {</span>
<span class="line" id="L78"> base: ResumeNode,</span>
<span class="line" id="L79"> completion_key: <span class="tok-type">usize</span>,</span>
<span class="line" id="L80"> },</span>
<span class="line" id="L81"> <span class="tok-kw">else</span> => <span class="tok-kw">struct</span> {},</span>
<span class="line" id="L82"> };</span>
<span class="line" id="L83"></span>
<span class="line" id="L84"> <span class="tok-kw">const</span> KEventFd = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L85"> base: ResumeNode,</span>
<span class="line" id="L86"> kevent: os.Kevent,</span>
<span class="line" id="L87"> };</span>
<span class="line" id="L88"></span>
<span class="line" id="L89"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Basic = <span class="tok-kw">switch</span> (builtin.os.tag) {</span>
<span class="line" id="L90"> .macos, .ios, .tvos, .watchos, .freebsd, .netbsd, .dragonfly, .openbsd => KEventBasic,</span>
<span class="line" id="L91"> .linux => <span class="tok-kw">struct</span> {</span>
<span class="line" id="L92"> base: ResumeNode,</span>
<span class="line" id="L93"> },</span>
<span class="line" id="L94"> .windows => <span class="tok-kw">struct</span> {</span>
<span class="line" id="L95"> base: ResumeNode,</span>
<span class="line" id="L96"> },</span>
<span class="line" id="L97"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"unsupported OS"</span>),</span>
<span class="line" id="L98"> };</span>
<span class="line" id="L99"></span>
<span class="line" id="L100"> <span class="tok-kw">const</span> KEventBasic = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L101"> base: ResumeNode,</span>
<span class="line" id="L102"> kev: os.Kevent,</span>
<span class="line" id="L103"> };</span>
<span class="line" id="L104"> };</span>
<span class="line" id="L105"></span>
<span class="line" id="L106"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Instance = <span class="tok-kw">switch</span> (std.options.io_mode) {</span>
<span class="line" id="L107"> .blocking => <span class="tok-builtin">@TypeOf</span>(<span class="tok-null">null</span>),</span>
<span class="line" id="L108"> .evented => ?*Loop,</span>
<span class="line" id="L109"> };</span>
<span class="line" id="L110"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> instance = std.options.event_loop;</span>
<span class="line" id="L111"></span>
<span class="line" id="L112"> <span class="tok-kw">var</span> global_instance_state: Loop = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L113"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> default_instance = <span class="tok-kw">switch</span> (std.options.io_mode) {</span>
<span class="line" id="L114"> .blocking => <span class="tok-null">null</span>,</span>
<span class="line" id="L115"> .evented => &global_instance_state,</span>
<span class="line" id="L116"> };</span>
<span class="line" id="L117"></span>
<span class="line" id="L118"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Mode = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L119"> single_threaded,</span>
<span class="line" id="L120"> multi_threaded,</span>
<span class="line" id="L121"> };</span>
<span class="line" id="L122"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> default_mode = .multi_threaded;</span>
<span class="line" id="L123"></span>
<span class="line" id="L124"> <span class="tok-comment">/// TODO copy elision / named return values so that the threads referencing *Loop</span></span>
<span class="line" id="L125"> <span class="tok-comment">/// have the correct pointer value.</span></span>
<span class="line" id="L126"> <span class="tok-comment">/// https://github.com/ziglang/zig/issues/2761 and https://github.com/ziglang/zig/issues/2765</span></span>
<span class="line" id="L127"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(self: *Loop) !<span class="tok-type">void</span> {</span>
<span class="line" id="L128"> <span class="tok-kw">if</span> (builtin.single_threaded <span class="tok-kw">or</span> std.options.event_loop_mode == .single_threaded) {</span>
<span class="line" id="L129"> <span class="tok-kw">return</span> self.initSingleThreaded();</span>
<span class="line" id="L130"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L131"> <span class="tok-kw">return</span> self.initMultiThreaded();</span>
<span class="line" id="L132"> }</span>
<span class="line" id="L133"> }</span>
<span class="line" id="L134"></span>
<span class="line" id="L135"> <span class="tok-comment">/// After initialization, call run().</span></span>
<span class="line" id="L136"> <span class="tok-comment">/// TODO copy elision / named return values so that the threads referencing *Loop</span></span>
<span class="line" id="L137"> <span class="tok-comment">/// have the correct pointer value.</span></span>
<span class="line" id="L138"> <span class="tok-comment">/// https://github.com/ziglang/zig/issues/2761 and https://github.com/ziglang/zig/issues/2765</span></span>
<span class="line" id="L139"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">initSingleThreaded</span>(self: *Loop) !<span class="tok-type">void</span> {</span>
<span class="line" id="L140"> <span class="tok-kw">return</span> self.initThreadPool(<span class="tok-number">1</span>);</span>
<span class="line" id="L141"> }</span>
<span class="line" id="L142"></span>
<span class="line" id="L143"> <span class="tok-comment">/// After initialization, call run().</span></span>
<span class="line" id="L144"> <span class="tok-comment">/// This is the same as `initThreadPool` using `Thread.getCpuCount` to determine the thread</span></span>
<span class="line" id="L145"> <span class="tok-comment">/// pool size.</span></span>
<span class="line" id="L146"> <span class="tok-comment">/// TODO copy elision / named return values so that the threads referencing *Loop</span></span>
<span class="line" id="L147"> <span class="tok-comment">/// have the correct pointer value.</span></span>
<span class="line" id="L148"> <span class="tok-comment">/// https://github.com/ziglang/zig/issues/2761 and https://github.com/ziglang/zig/issues/2765</span></span>
<span class="line" id="L149"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">initMultiThreaded</span>(self: *Loop) !<span class="tok-type">void</span> {</span>
<span class="line" id="L150"> <span class="tok-kw">if</span> (builtin.single_threaded)</span>
<span class="line" id="L151"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"initMultiThreaded unavailable when building in single-threaded mode"</span>);</span>
<span class="line" id="L152"> <span class="tok-kw">const</span> core_count = <span class="tok-kw">try</span> Thread.getCpuCount();</span>
<span class="line" id="L153"> <span class="tok-kw">return</span> self.initThreadPool(core_count);</span>
<span class="line" id="L154"> }</span>
<span class="line" id="L155"></span>
<span class="line" id="L156"> <span class="tok-comment">/// Thread count is the total thread count. The thread pool size will be</span></span>
<span class="line" id="L157"> <span class="tok-comment">/// max(thread_count - 1, 0)</span></span>
<span class="line" id="L158"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">initThreadPool</span>(self: *Loop, thread_count: <span class="tok-type">usize</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L159"> self.* = Loop{</span>
<span class="line" id="L160"> .arena = std.heap.ArenaAllocator.init(std.heap.page_allocator),</span>
<span class="line" id="L161"> .pending_event_count = <span class="tok-number">1</span>,</span>
<span class="line" id="L162"> .os_data = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L163"> .next_tick_queue = std.atomic.Queue(<span class="tok-kw">anyframe</span>).init(),</span>
<span class="line" id="L164"> .extra_threads = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L165"> .available_eventfd_resume_nodes = std.atomic.Stack(ResumeNode.EventFd).init(),</span>
<span class="line" id="L166"> .eventfd_resume_nodes = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L167"> .final_resume_node = ResumeNode{</span>
<span class="line" id="L168"> .id = .stop,</span>
<span class="line" id="L169"> .handle = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L170"> .overlapped = ResumeNode.overlapped_init,</span>
<span class="line" id="L171"> },</span>
<span class="line" id="L172"> .fs_end_request = .{ .data = .{ .msg = .end, .finish = .no_action } },</span>
<span class="line" id="L173"> .fs_queue = std.atomic.Queue(Request).init(),</span>
<span class="line" id="L174"> .fs_thread = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L175"> .fs_thread_wakeup = .{},</span>
<span class="line" id="L176"> .delay_queue = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L177"> };</span>
<span class="line" id="L178"> <span class="tok-kw">errdefer</span> self.arena.deinit();</span>
<span class="line" id="L179"></span>
<span class="line" id="L180"> <span class="tok-comment">// We need at least one of these in case the fs thread wants to use onNextTick</span>
</span>
<span class="line" id="L181"> <span class="tok-kw">const</span> extra_thread_count = thread_count - <span class="tok-number">1</span>;</span>
<span class="line" id="L182"> <span class="tok-kw">const</span> resume_node_count = <span class="tok-builtin">@max</span>(extra_thread_count, <span class="tok-number">1</span>);</span>
<span class="line" id="L183"> self.eventfd_resume_nodes = <span class="tok-kw">try</span> self.arena.allocator().alloc(</span>
<span class="line" id="L184"> std.atomic.Stack(ResumeNode.EventFd).Node,</span>
<span class="line" id="L185"> resume_node_count,</span>
<span class="line" id="L186"> );</span>
<span class="line" id="L187"></span>
<span class="line" id="L188"> self.extra_threads = <span class="tok-kw">try</span> self.arena.allocator().alloc(Thread, extra_thread_count);</span>
<span class="line" id="L189"></span>
<span class="line" id="L190"> <span class="tok-kw">try</span> self.initOsData(extra_thread_count);</span>
<span class="line" id="L191"> <span class="tok-kw">errdefer</span> self.deinitOsData();</span>
<span class="line" id="L192"></span>
<span class="line" id="L193"> <span class="tok-kw">if</span> (!builtin.single_threaded) {</span>
<span class="line" id="L194"> self.fs_thread = <span class="tok-kw">try</span> Thread.spawn(.{}, posixFsRun, .{self});</span>
<span class="line" id="L195"> }</span>
<span class="line" id="L196"> <span class="tok-kw">errdefer</span> <span class="tok-kw">if</span> (!builtin.single_threaded) {</span>
<span class="line" id="L197"> self.posixFsRequest(&self.fs_end_request);</span>
<span class="line" id="L198"> self.fs_thread.join();</span>
<span class="line" id="L199"> };</span>
<span class="line" id="L200"></span>
<span class="line" id="L201"> <span class="tok-kw">if</span> (!builtin.single_threaded)</span>
<span class="line" id="L202"> <span class="tok-kw">try</span> self.delay_queue.init();</span>
<span class="line" id="L203"> }</span>
<span class="line" id="L204"></span>
<span class="line" id="L205"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *Loop) <span class="tok-type">void</span> {</span>
<span class="line" id="L206"> self.deinitOsData();</span>
<span class="line" id="L207"> self.arena.deinit();</span>
<span class="line" id="L208"> self.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L209"> }</span>
<span class="line" id="L210"></span>
<span class="line" id="L211"> <span class="tok-kw">const</span> InitOsDataError = os.EpollCreateError || mem.Allocator.Error || os.EventFdError ||</span>
<span class="line" id="L212"> Thread.SpawnError || os.EpollCtlError || os.KEventError ||</span>
<span class="line" id="L213"> windows.CreateIoCompletionPortError;</span>
<span class="line" id="L214"></span>
<span class="line" id="L215"> <span class="tok-kw">const</span> wakeup_bytes = [_]<span class="tok-type">u8</span>{<span class="tok-number">0x1</span>} ** <span class="tok-number">8</span>;</span>
<span class="line" id="L216"></span>
<span class="line" id="L217"> <span class="tok-kw">fn</span> <span class="tok-fn">initOsData</span>(self: *Loop, extra_thread_count: <span class="tok-type">usize</span>) InitOsDataError!<span class="tok-type">void</span> {</span>
<span class="line" id="L218"> <span class="tok-kw">nosuspend</span> <span class="tok-kw">switch</span> (builtin.os.tag) {</span>
<span class="line" id="L219"> .linux => {</span>
<span class="line" id="L220"> <span class="tok-kw">errdefer</span> {</span>
<span class="line" id="L221"> <span class="tok-kw">while</span> (self.available_eventfd_resume_nodes.pop()) |node| os.close(node.data.eventfd);</span>
<span class="line" id="L222"> }</span>
<span class="line" id="L223"> <span class="tok-kw">for</span> (self.eventfd_resume_nodes) |*eventfd_node| {</span>
<span class="line" id="L224"> eventfd_node.* = std.atomic.Stack(ResumeNode.EventFd).Node{</span>
<span class="line" id="L225"> .data = ResumeNode.EventFd{</span>
<span class="line" id="L226"> .base = ResumeNode{</span>
<span class="line" id="L227"> .id = .event_fd,</span>
<span class="line" id="L228"> .handle = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L229"> .overlapped = ResumeNode.overlapped_init,</span>
<span class="line" id="L230"> },</span>
<span class="line" id="L231"> .eventfd = <span class="tok-kw">try</span> os.eventfd(<span class="tok-number">1</span>, os.linux.EFD.CLOEXEC | os.linux.EFD.NONBLOCK),</span>
<span class="line" id="L232"> .epoll_op = os.linux.EPOLL.CTL_ADD,</span>
<span class="line" id="L233"> },</span>
<span class="line" id="L234"> .next = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L235"> };</span>
<span class="line" id="L236"> self.available_eventfd_resume_nodes.push(eventfd_node);</span>
<span class="line" id="L237"> }</span>
<span class="line" id="L238"></span>
<span class="line" id="L239"> self.os_data.epollfd = <span class="tok-kw">try</span> os.epoll_create1(os.linux.EPOLL.CLOEXEC);</span>
<span class="line" id="L240"> <span class="tok-kw">errdefer</span> os.close(self.os_data.epollfd);</span>
<span class="line" id="L241"></span>
<span class="line" id="L242"> self.os_data.final_eventfd = <span class="tok-kw">try</span> os.eventfd(<span class="tok-number">0</span>, os.linux.EFD.CLOEXEC | os.linux.EFD.NONBLOCK);</span>
<span class="line" id="L243"> <span class="tok-kw">errdefer</span> os.close(self.os_data.final_eventfd);</span>
<span class="line" id="L244"></span>
<span class="line" id="L245"> self.os_data.final_eventfd_event = os.linux.epoll_event{</span>
<span class="line" id="L246"> .events = os.linux.EPOLL.IN,</span>
<span class="line" id="L247"> .data = os.linux.epoll_data{ .ptr = <span class="tok-builtin">@intFromPtr</span>(&self.final_resume_node) },</span>
<span class="line" id="L248"> };</span>
<span class="line" id="L249"> <span class="tok-kw">try</span> os.epoll_ctl(</span>
<span class="line" id="L250"> self.os_data.epollfd,</span>
<span class="line" id="L251"> os.linux.EPOLL.CTL_ADD,</span>
<span class="line" id="L252"> self.os_data.final_eventfd,</span>
<span class="line" id="L253"> &self.os_data.final_eventfd_event,</span>
<span class="line" id="L254"> );</span>
<span class="line" id="L255"></span>
<span class="line" id="L256"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L257"> assert(extra_thread_count == <span class="tok-number">0</span>);</span>
<span class="line" id="L258"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L259"> }</span>
<span class="line" id="L260"></span>
<span class="line" id="L261"> <span class="tok-kw">var</span> extra_thread_index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L262"> <span class="tok-kw">errdefer</span> {</span>
<span class="line" id="L263"> <span class="tok-comment">// writing 8 bytes to an eventfd cannot fail</span>
</span>
<span class="line" id="L264"> <span class="tok-kw">const</span> amt = os.write(self.os_data.final_eventfd, &wakeup_bytes) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L265"> assert(amt == wakeup_bytes.len);</span>
<span class="line" id="L266"> <span class="tok-kw">while</span> (extra_thread_index != <span class="tok-number">0</span>) {</span>
<span class="line" id="L267"> extra_thread_index -= <span class="tok-number">1</span>;</span>
<span class="line" id="L268"> self.extra_threads[extra_thread_index].join();</span>
<span class="line" id="L269"> }</span>
<span class="line" id="L270"> }</span>
<span class="line" id="L271"> <span class="tok-kw">while</span> (extra_thread_index < extra_thread_count) : (extra_thread_index += <span class="tok-number">1</span>) {</span>
<span class="line" id="L272"> self.extra_threads[extra_thread_index] = <span class="tok-kw">try</span> Thread.spawn(.{}, workerRun, .{self});</span>
<span class="line" id="L273"> }</span>
<span class="line" id="L274"> },</span>
<span class="line" id="L275"> .macos, .ios, .tvos, .watchos, .freebsd, .netbsd, .dragonfly => {</span>
<span class="line" id="L276"> self.os_data.kqfd = <span class="tok-kw">try</span> os.kqueue();</span>
<span class="line" id="L277"> <span class="tok-kw">errdefer</span> os.close(self.os_data.kqfd);</span>
<span class="line" id="L278"></span>
<span class="line" id="L279"> <span class="tok-kw">const</span> empty_kevs = &[<span class="tok-number">0</span>]os.Kevent{};</span>
<span class="line" id="L280"></span>
<span class="line" id="L281"> <span class="tok-kw">for</span> (self.eventfd_resume_nodes, <span class="tok-number">0</span>..) |*eventfd_node, i| {</span>
<span class="line" id="L282"> eventfd_node.* = std.atomic.Stack(ResumeNode.EventFd).Node{</span>
<span class="line" id="L283"> .data = ResumeNode.EventFd{</span>
<span class="line" id="L284"> .base = ResumeNode{</span>
<span class="line" id="L285"> .id = .event_fd,</span>
<span class="line" id="L286"> .handle = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L287"> .overlapped = ResumeNode.overlapped_init,</span>
<span class="line" id="L288"> },</span>
<span class="line" id="L289"> <span class="tok-comment">// this one is for sending events</span>
</span>
<span class="line" id="L290"> .kevent = os.Kevent{</span>
<span class="line" id="L291"> .ident = i,</span>
<span class="line" id="L292"> .filter = os.system.EVFILT_USER,</span>
<span class="line" id="L293"> .flags = os.system.EV_CLEAR | os.system.EV_ADD | os.system.EV_DISABLE,</span>
<span class="line" id="L294"> .fflags = <span class="tok-number">0</span>,</span>
<span class="line" id="L295"> .data = <span class="tok-number">0</span>,</span>
<span class="line" id="L296"> .udata = <span class="tok-builtin">@intFromPtr</span>(&eventfd_node.data.base),</span>
<span class="line" id="L297"> },</span>
<span class="line" id="L298"> },</span>
<span class="line" id="L299"> .next = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L300"> };</span>
<span class="line" id="L301"> self.available_eventfd_resume_nodes.push(eventfd_node);</span>
<span class="line" id="L302"> <span class="tok-kw">const</span> kevent_array = <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> [<span class="tok-number">1</span>]os.Kevent, &eventfd_node.data.kevent);</span>
<span class="line" id="L303"> _ = <span class="tok-kw">try</span> os.kevent(self.os_data.kqfd, kevent_array, empty_kevs, <span class="tok-null">null</span>);</span>
<span class="line" id="L304"> eventfd_node.data.kevent.flags = os.system.EV_CLEAR | os.system.EV_ENABLE;</span>
<span class="line" id="L305"> eventfd_node.data.kevent.fflags = os.system.NOTE_TRIGGER;</span>
<span class="line" id="L306"> }</span>
<span class="line" id="L307"></span>
<span class="line" id="L308"> <span class="tok-comment">// Pre-add so that we cannot get error.SystemResources</span>
</span>
<span class="line" id="L309"> <span class="tok-comment">// later when we try to activate it.</span>
</span>
<span class="line" id="L310"> self.os_data.final_kevent = os.Kevent{</span>
<span class="line" id="L311"> .ident = extra_thread_count,</span>
<span class="line" id="L312"> .filter = os.system.EVFILT_USER,</span>
<span class="line" id="L313"> .flags = os.system.EV_ADD | os.system.EV_DISABLE,</span>
<span class="line" id="L314"> .fflags = <span class="tok-number">0</span>,</span>
<span class="line" id="L315"> .data = <span class="tok-number">0</span>,</span>
<span class="line" id="L316"> .udata = <span class="tok-builtin">@intFromPtr</span>(&self.final_resume_node),</span>
<span class="line" id="L317"> };</span>
<span class="line" id="L318"> <span class="tok-kw">const</span> final_kev_arr = <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> [<span class="tok-number">1</span>]os.Kevent, &self.os_data.final_kevent);</span>
<span class="line" id="L319"> _ = <span class="tok-kw">try</span> os.kevent(self.os_data.kqfd, final_kev_arr, empty_kevs, <span class="tok-null">null</span>);</span>
<span class="line" id="L320"> self.os_data.final_kevent.flags = os.system.EV_ENABLE;</span>
<span class="line" id="L321"> self.os_data.final_kevent.fflags = os.system.NOTE_TRIGGER;</span>
<span class="line" id="L322"></span>
<span class="line" id="L323"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L324"> assert(extra_thread_count == <span class="tok-number">0</span>);</span>
<span class="line" id="L325"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L326"> }</span>
<span class="line" id="L327"></span>
<span class="line" id="L328"> <span class="tok-kw">var</span> extra_thread_index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L329"> <span class="tok-kw">errdefer</span> {</span>
<span class="line" id="L330"> _ = os.kevent(self.os_data.kqfd, final_kev_arr, empty_kevs, <span class="tok-null">null</span>) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L331"> <span class="tok-kw">while</span> (extra_thread_index != <span class="tok-number">0</span>) {</span>
<span class="line" id="L332"> extra_thread_index -= <span class="tok-number">1</span>;</span>
<span class="line" id="L333"> self.extra_threads[extra_thread_index].join();</span>
<span class="line" id="L334"> }</span>
<span class="line" id="L335"> }</span>
<span class="line" id="L336"> <span class="tok-kw">while</span> (extra_thread_index < extra_thread_count) : (extra_thread_index += <span class="tok-number">1</span>) {</span>
<span class="line" id="L337"> self.extra_threads[extra_thread_index] = <span class="tok-kw">try</span> Thread.spawn(.{}, workerRun, .{self});</span>
<span class="line" id="L338"> }</span>
<span class="line" id="L339"> },</span>
<span class="line" id="L340"> .openbsd => {</span>
<span class="line" id="L341"> self.os_data.kqfd = <span class="tok-kw">try</span> os.kqueue();</span>
<span class="line" id="L342"> <span class="tok-kw">errdefer</span> os.close(self.os_data.kqfd);</span>
<span class="line" id="L343"></span>
<span class="line" id="L344"> <span class="tok-kw">const</span> empty_kevs = &[<span class="tok-number">0</span>]os.Kevent{};</span>
<span class="line" id="L345"></span>
<span class="line" id="L346"> <span class="tok-kw">for</span> (self.eventfd_resume_nodes, <span class="tok-number">0</span>..) |*eventfd_node, i| {</span>
<span class="line" id="L347"> eventfd_node.* = std.atomic.Stack(ResumeNode.EventFd).Node{</span>
<span class="line" id="L348"> .data = ResumeNode.EventFd{</span>
<span class="line" id="L349"> .base = ResumeNode{</span>
<span class="line" id="L350"> .id = .event_fd,</span>
<span class="line" id="L351"> .handle = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L352"> .overlapped = ResumeNode.overlapped_init,</span>
<span class="line" id="L353"> },</span>
<span class="line" id="L354"> <span class="tok-comment">// this one is for sending events</span>
</span>
<span class="line" id="L355"> .kevent = os.Kevent{</span>
<span class="line" id="L356"> .ident = i,</span>
<span class="line" id="L357"> .filter = os.system.EVFILT_TIMER,</span>
<span class="line" id="L358"> .flags = os.system.EV_CLEAR | os.system.EV_ADD | os.system.EV_DISABLE | os.system.EV_ONESHOT,</span>
<span class="line" id="L359"> .fflags = <span class="tok-number">0</span>,</span>
<span class="line" id="L360"> .data = <span class="tok-number">0</span>,</span>
<span class="line" id="L361"> .udata = <span class="tok-builtin">@intFromPtr</span>(&eventfd_node.data.base),</span>
<span class="line" id="L362"> },</span>
<span class="line" id="L363"> },</span>
<span class="line" id="L364"> .next = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L365"> };</span>
<span class="line" id="L366"> self.available_eventfd_resume_nodes.push(eventfd_node);</span>
<span class="line" id="L367"> <span class="tok-kw">const</span> kevent_array = <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> [<span class="tok-number">1</span>]os.Kevent, &eventfd_node.data.kevent);</span>
<span class="line" id="L368"> _ = <span class="tok-kw">try</span> os.kevent(self.os_data.kqfd, kevent_array, empty_kevs, <span class="tok-null">null</span>);</span>
<span class="line" id="L369"> eventfd_node.data.kevent.flags = os.system.EV_CLEAR | os.system.EV_ENABLE;</span>
<span class="line" id="L370"> }</span>
<span class="line" id="L371"></span>
<span class="line" id="L372"> <span class="tok-comment">// Pre-add so that we cannot get error.SystemResources</span>
</span>
<span class="line" id="L373"> <span class="tok-comment">// later when we try to activate it.</span>
</span>
<span class="line" id="L374"> self.os_data.final_kevent = os.Kevent{</span>
<span class="line" id="L375"> .ident = extra_thread_count,</span>
<span class="line" id="L376"> .filter = os.system.EVFILT_TIMER,</span>
<span class="line" id="L377"> .flags = os.system.EV_ADD | os.system.EV_ONESHOT | os.system.EV_DISABLE,</span>
<span class="line" id="L378"> .fflags = <span class="tok-number">0</span>,</span>
<span class="line" id="L379"> .data = <span class="tok-number">0</span>,</span>
<span class="line" id="L380"> .udata = <span class="tok-builtin">@intFromPtr</span>(&self.final_resume_node),</span>
<span class="line" id="L381"> };</span>
<span class="line" id="L382"> <span class="tok-kw">const</span> final_kev_arr = <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> [<span class="tok-number">1</span>]os.Kevent, &self.os_data.final_kevent);</span>
<span class="line" id="L383"> _ = <span class="tok-kw">try</span> os.kevent(self.os_data.kqfd, final_kev_arr, empty_kevs, <span class="tok-null">null</span>);</span>
<span class="line" id="L384"> self.os_data.final_kevent.flags = os.system.EV_ENABLE;</span>
<span class="line" id="L385"></span>
<span class="line" id="L386"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L387"> assert(extra_thread_count == <span class="tok-number">0</span>);</span>
<span class="line" id="L388"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L389"> }</span>
<span class="line" id="L390"></span>
<span class="line" id="L391"> <span class="tok-kw">var</span> extra_thread_index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L392"> <span class="tok-kw">errdefer</span> {</span>
<span class="line" id="L393"> _ = os.kevent(self.os_data.kqfd, final_kev_arr, empty_kevs, <span class="tok-null">null</span>) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L394"> <span class="tok-kw">while</span> (extra_thread_index != <span class="tok-number">0</span>) {</span>
<span class="line" id="L395"> extra_thread_index -= <span class="tok-number">1</span>;</span>
<span class="line" id="L396"> self.extra_threads[extra_thread_index].join();</span>
<span class="line" id="L397"> }</span>
<span class="line" id="L398"> }</span>
<span class="line" id="L399"> <span class="tok-kw">while</span> (extra_thread_index < extra_thread_count) : (extra_thread_index += <span class="tok-number">1</span>) {</span>
<span class="line" id="L400"> self.extra_threads[extra_thread_index] = <span class="tok-kw">try</span> Thread.spawn(.{}, workerRun, .{self});</span>
<span class="line" id="L401"> }</span>
<span class="line" id="L402"> },</span>
<span class="line" id="L403"> .windows => {</span>
<span class="line" id="L404"> self.os_data.io_port = <span class="tok-kw">try</span> windows.CreateIoCompletionPort(</span>
<span class="line" id="L405"> windows.INVALID_HANDLE_VALUE,</span>
<span class="line" id="L406"> <span class="tok-null">null</span>,</span>
<span class="line" id="L407"> <span class="tok-null">undefined</span>,</span>
<span class="line" id="L408"> maxInt(windows.DWORD),</span>
<span class="line" id="L409"> );</span>
<span class="line" id="L410"> <span class="tok-kw">errdefer</span> windows.CloseHandle(self.os_data.io_port);</span>
<span class="line" id="L411"></span>
<span class="line" id="L412"> <span class="tok-kw">for</span> (self.eventfd_resume_nodes) |*eventfd_node| {</span>
<span class="line" id="L413"> eventfd_node.* = std.atomic.Stack(ResumeNode.EventFd).Node{</span>
<span class="line" id="L414"> .data = ResumeNode.EventFd{</span>
<span class="line" id="L415"> .base = ResumeNode{</span>
<span class="line" id="L416"> .id = .event_fd,</span>
<span class="line" id="L417"> .handle = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L418"> .overlapped = ResumeNode.overlapped_init,</span>
<span class="line" id="L419"> },</span>
<span class="line" id="L420"> <span class="tok-comment">// this one is for sending events</span>
</span>
<span class="line" id="L421"> .completion_key = <span class="tok-builtin">@intFromPtr</span>(&eventfd_node.data.base),</span>
<span class="line" id="L422"> },</span>
<span class="line" id="L423"> .next = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L424"> };</span>
<span class="line" id="L425"> self.available_eventfd_resume_nodes.push(eventfd_node);</span>
<span class="line" id="L426"> }</span>
<span class="line" id="L427"></span>
<span class="line" id="L428"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L429"> assert(extra_thread_count == <span class="tok-number">0</span>);</span>
<span class="line" id="L430"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L431"> }</span>
<span class="line" id="L432"></span>
<span class="line" id="L433"> <span class="tok-kw">var</span> extra_thread_index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L434"> <span class="tok-kw">errdefer</span> {</span>
<span class="line" id="L435"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L436"> <span class="tok-kw">while</span> (i < extra_thread_index) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L437"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L438"> <span class="tok-kw">const</span> overlapped = &self.final_resume_node.overlapped;</span>
<span class="line" id="L439"> windows.PostQueuedCompletionStatus(self.os_data.io_port, <span class="tok-null">undefined</span>, <span class="tok-null">undefined</span>, overlapped) <span class="tok-kw">catch</span> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L440"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L441"> }</span>
<span class="line" id="L442"> }</span>
<span class="line" id="L443"> <span class="tok-kw">while</span> (extra_thread_index != <span class="tok-number">0</span>) {</span>
<span class="line" id="L444"> extra_thread_index -= <span class="tok-number">1</span>;</span>
<span class="line" id="L445"> self.extra_threads[extra_thread_index].join();</span>
<span class="line" id="L446"> }</span>
<span class="line" id="L447"> }</span>
<span class="line" id="L448"> <span class="tok-kw">while</span> (extra_thread_index < extra_thread_count) : (extra_thread_index += <span class="tok-number">1</span>) {</span>
<span class="line" id="L449"> self.extra_threads[extra_thread_index] = <span class="tok-kw">try</span> Thread.spawn(.{}, workerRun, .{self});</span>
<span class="line" id="L450"> }</span>
<span class="line" id="L451"> },</span>
<span class="line" id="L452"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L453"> };</span>
<span class="line" id="L454"> }</span>
<span class="line" id="L455"></span>
<span class="line" id="L456"> <span class="tok-kw">fn</span> <span class="tok-fn">deinitOsData</span>(self: *Loop) <span class="tok-type">void</span> {</span>
<span class="line" id="L457"> <span class="tok-kw">nosuspend</span> <span class="tok-kw">switch</span> (builtin.os.tag) {</span>
<span class="line" id="L458"> .linux => {</span>
<span class="line" id="L459"> os.close(self.os_data.final_eventfd);</span>
<span class="line" id="L460"> <span class="tok-kw">while</span> (self.available_eventfd_resume_nodes.pop()) |node| os.close(node.data.eventfd);</span>
<span class="line" id="L461"> os.close(self.os_data.epollfd);</span>
<span class="line" id="L462"> },</span>
<span class="line" id="L463"> .macos, .ios, .tvos, .watchos, .freebsd, .netbsd, .dragonfly, .openbsd => {</span>
<span class="line" id="L464"> os.close(self.os_data.kqfd);</span>
<span class="line" id="L465"> },</span>
<span class="line" id="L466"> .windows => {</span>
<span class="line" id="L467"> windows.CloseHandle(self.os_data.io_port);</span>
<span class="line" id="L468"> },</span>
<span class="line" id="L469"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L470"> };</span>
<span class="line" id="L471"> }</span>
<span class="line" id="L472"></span>
<span class="line" id="L473"> <span class="tok-comment">/// resume_node must live longer than the anyframe that it holds a reference to.</span></span>
<span class="line" id="L474"> <span class="tok-comment">/// flags must contain EPOLLET</span></span>
<span class="line" id="L475"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">linuxAddFd</span>(self: *Loop, fd: <span class="tok-type">i32</span>, resume_node: *ResumeNode, flags: <span class="tok-type">u32</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L476"> assert(flags & os.linux.EPOLL.ET == os.linux.EPOLL.ET);</span>
<span class="line" id="L477"> self.beginOneEvent();</span>
<span class="line" id="L478"> <span class="tok-kw">errdefer</span> self.finishOneEvent();</span>
<span class="line" id="L479"> <span class="tok-kw">try</span> self.linuxModFd(</span>
<span class="line" id="L480"> fd,</span>
<span class="line" id="L481"> os.linux.EPOLL.CTL_ADD,</span>
<span class="line" id="L482"> flags,</span>
<span class="line" id="L483"> resume_node,</span>
<span class="line" id="L484"> );</span>
<span class="line" id="L485"> }</span>
<span class="line" id="L486"></span>
<span class="line" id="L487"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">linuxModFd</span>(self: *Loop, fd: <span class="tok-type">i32</span>, op: <span class="tok-type">u32</span>, flags: <span class="tok-type">u32</span>, resume_node: *ResumeNode) !<span class="tok-type">void</span> {</span>
<span class="line" id="L488"> assert(flags & os.linux.EPOLL.ET == os.linux.EPOLL.ET);</span>
<span class="line" id="L489"> <span class="tok-kw">var</span> ev = os.linux.epoll_event{</span>
<span class="line" id="L490"> .events = flags,</span>
<span class="line" id="L491"> .data = os.linux.epoll_data{ .ptr = <span class="tok-builtin">@intFromPtr</span>(resume_node) },</span>
<span class="line" id="L492"> };</span>
<span class="line" id="L493"> <span class="tok-kw">try</span> os.epoll_ctl(self.os_data.epollfd, op, fd, &ev);</span>
<span class="line" id="L494"> }</span>
<span class="line" id="L495"></span>
<span class="line" id="L496"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">linuxRemoveFd</span>(self: *Loop, fd: <span class="tok-type">i32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L497"> os.epoll_ctl(self.os_data.epollfd, os.linux.EPOLL.CTL_DEL, fd, <span class="tok-null">null</span>) <span class="tok-kw">catch</span> {};</span>
<span class="line" id="L498"> self.finishOneEvent();</span>
<span class="line" id="L499"> }</span>
<span class="line" id="L500"></span>
<span class="line" id="L501"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">linuxWaitFd</span>(self: *Loop, fd: <span class="tok-type">i32</span>, flags: <span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L502"> assert(flags & os.linux.EPOLL.ET == os.linux.EPOLL.ET);</span>
<span class="line" id="L503"> assert(flags & os.linux.EPOLL.ONESHOT == os.linux.EPOLL.ONESHOT);</span>
<span class="line" id="L504"> <span class="tok-kw">var</span> resume_node = ResumeNode.Basic{</span>
<span class="line" id="L505"> .base = ResumeNode{</span>
<span class="line" id="L506"> .id = .basic,</span>
<span class="line" id="L507"> .handle = <span class="tok-builtin">@frame</span>(),</span>
<span class="line" id="L508"> .overlapped = ResumeNode.overlapped_init,</span>
<span class="line" id="L509"> },</span>
<span class="line" id="L510"> };</span>
<span class="line" id="L511"> <span class="tok-kw">var</span> need_to_delete = <span class="tok-null">true</span>;</span>
<span class="line" id="L512"> <span class="tok-kw">defer</span> <span class="tok-kw">if</span> (need_to_delete) self.linuxRemoveFd(fd);</span>
<span class="line" id="L513"></span>
<span class="line" id="L514"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L515"> self.linuxAddFd(fd, &resume_node.base, flags) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L516"> <span class="tok-kw">error</span>.FileDescriptorNotRegistered => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L517"> <span class="tok-kw">error</span>.OperationCausesCircularLoop => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L518"> <span class="tok-kw">error</span>.FileDescriptorIncompatibleWithEpoll => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L519"> <span class="tok-kw">error</span>.FileDescriptorAlreadyPresentInSet => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// evented writes to the same fd is not thread-safe</span>
</span>
<span class="line" id="L520"></span>
<span class="line" id="L521"> <span class="tok-kw">error</span>.SystemResources,</span>
<span class="line" id="L522"> <span class="tok-kw">error</span>.UserResourceLimitReached,</span>
<span class="line" id="L523"> <span class="tok-kw">error</span>.Unexpected,</span>
<span class="line" id="L524"> => {</span>
<span class="line" id="L525"> need_to_delete = <span class="tok-null">false</span>;</span>
<span class="line" id="L526"> <span class="tok-comment">// Fall back to a blocking poll(). Ideally this codepath is never hit, since</span>
</span>
<span class="line" id="L527"> <span class="tok-comment">// epoll should be just fine. But this is better than incorrect behavior.</span>
</span>
<span class="line" id="L528"> <span class="tok-kw">var</span> poll_flags: <span class="tok-type">i16</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L529"> <span class="tok-kw">if</span> ((flags & os.linux.EPOLL.IN) != <span class="tok-number">0</span>) poll_flags |= os.POLL.IN;</span>
<span class="line" id="L530"> <span class="tok-kw">if</span> ((flags & os.linux.EPOLL.OUT) != <span class="tok-number">0</span>) poll_flags |= os.POLL.OUT;</span>
<span class="line" id="L531"> <span class="tok-kw">var</span> pfd = [<span class="tok-number">1</span>]os.pollfd{os.pollfd{</span>
<span class="line" id="L532"> .fd = fd,</span>
<span class="line" id="L533"> .events = poll_flags,</span>
<span class="line" id="L534"> .revents = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L535"> }};</span>
<span class="line" id="L536"> _ = os.poll(&pfd, -<span class="tok-number">1</span>) <span class="tok-kw">catch</span> |poll_err| <span class="tok-kw">switch</span> (poll_err) {</span>
<span class="line" id="L537"> <span class="tok-kw">error</span>.NetworkSubsystemFailed => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// only possible on windows</span>
</span>
<span class="line" id="L538"></span>
<span class="line" id="L539"> <span class="tok-kw">error</span>.SystemResources,</span>
<span class="line" id="L540"> <span class="tok-kw">error</span>.Unexpected,</span>
<span class="line" id="L541"> => {</span>
<span class="line" id="L542"> <span class="tok-comment">// Even poll() didn't work. The best we can do now is sleep for a</span>
</span>
<span class="line" id="L543"> <span class="tok-comment">// small duration and then hope that something changed.</span>
</span>
<span class="line" id="L544"> std.time.sleep(<span class="tok-number">1</span> * std.time.ns_per_ms);</span>
<span class="line" id="L545"> },</span>
<span class="line" id="L546"> };</span>
<span class="line" id="L547"> <span class="tok-kw">resume</span> <span class="tok-builtin">@frame</span>();</span>
<span class="line" id="L548"> },</span>
<span class="line" id="L549"> };</span>
<span class="line" id="L550"> }</span>
<span class="line" id="L551"> }</span>
<span class="line" id="L552"></span>
<span class="line" id="L553"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">waitUntilFdReadable</span>(self: *Loop, fd: os.fd_t) <span class="tok-type">void</span> {</span>
<span class="line" id="L554"> <span class="tok-kw">switch</span> (builtin.os.tag) {</span>
<span class="line" id="L555"> .linux => {</span>
<span class="line" id="L556"> self.linuxWaitFd(fd, os.linux.EPOLL.ET | os.linux.EPOLL.ONESHOT | os.linux.EPOLL.IN);</span>
<span class="line" id="L557"> },</span>
<span class="line" id="L558"> .macos, .ios, .tvos, .watchos, .freebsd, .netbsd, .dragonfly, .openbsd => {</span>
<span class="line" id="L559"> self.bsdWaitKev(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(fd)), os.system.EVFILT_READ, os.system.EV_ONESHOT);</span>
<span class="line" id="L560"> },</span>
<span class="line" id="L561"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Unsupported OS"</span>),</span>
<span class="line" id="L562"> }</span>
<span class="line" id="L563"> }</span>
<span class="line" id="L564"></span>
<span class="line" id="L565"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">waitUntilFdWritable</span>(self: *Loop, fd: os.fd_t) <span class="tok-type">void</span> {</span>
<span class="line" id="L566"> <span class="tok-kw">switch</span> (builtin.os.tag) {</span>
<span class="line" id="L567"> .linux => {</span>
<span class="line" id="L568"> self.linuxWaitFd(fd, os.linux.EPOLL.ET | os.linux.EPOLL.ONESHOT | os.linux.EPOLL.OUT);</span>
<span class="line" id="L569"> },</span>
<span class="line" id="L570"> .macos, .ios, .tvos, .watchos, .freebsd, .netbsd, .dragonfly, .openbsd => {</span>
<span class="line" id="L571"> self.bsdWaitKev(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(fd)), os.system.EVFILT_WRITE, os.system.EV_ONESHOT);</span>
<span class="line" id="L572"> },</span>
<span class="line" id="L573"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Unsupported OS"</span>),</span>
<span class="line" id="L574"> }</span>
<span class="line" id="L575"> }</span>
<span class="line" id="L576"></span>
<span class="line" id="L577"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">waitUntilFdWritableOrReadable</span>(self: *Loop, fd: os.fd_t) <span class="tok-type">void</span> {</span>
<span class="line" id="L578"> <span class="tok-kw">switch</span> (builtin.os.tag) {</span>
<span class="line" id="L579"> .linux => {</span>
<span class="line" id="L580"> self.linuxWaitFd(fd, os.linux.EPOLL.ET | os.linux.EPOLL.ONESHOT | os.linux.EPOLL.OUT | os.linux.EPOLL.IN);</span>
<span class="line" id="L581"> },</span>
<span class="line" id="L582"> .macos, .ios, .tvos, .watchos, .freebsd, .netbsd, .dragonfly, .openbsd => {</span>
<span class="line" id="L583"> self.bsdWaitKev(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(fd)), os.system.EVFILT_READ, os.system.EV_ONESHOT);</span>
<span class="line" id="L584"> self.bsdWaitKev(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(fd)), os.system.EVFILT_WRITE, os.system.EV_ONESHOT);</span>
<span class="line" id="L585"> },</span>
<span class="line" id="L586"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Unsupported OS"</span>),</span>
<span class="line" id="L587"> }</span>
<span class="line" id="L588"> }</span>
<span class="line" id="L589"></span>
<span class="line" id="L590"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">bsdWaitKev</span>(self: *Loop, ident: <span class="tok-type">usize</span>, filter: <span class="tok-type">i16</span>, flags: <span class="tok-type">u16</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L591"> <span class="tok-kw">var</span> resume_node = ResumeNode.Basic{</span>
<span class="line" id="L592"> .base = ResumeNode{</span>
<span class="line" id="L593"> .id = .basic,</span>
<span class="line" id="L594"> .handle = <span class="tok-builtin">@frame</span>(),</span>
<span class="line" id="L595"> .overlapped = ResumeNode.overlapped_init,</span>
<span class="line" id="L596"> },</span>
<span class="line" id="L597"> .kev = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L598"> };</span>
<span class="line" id="L599"></span>
<span class="line" id="L600"> <span class="tok-kw">defer</span> {</span>
<span class="line" id="L601"> <span class="tok-comment">// If the kevent was set to be ONESHOT, it doesn't need to be deleted manually.</span>
</span>
<span class="line" id="L602"> <span class="tok-kw">if</span> (flags & os.system.EV_ONESHOT != <span class="tok-number">0</span>) {</span>
<span class="line" id="L603"> self.bsdRemoveKev(ident, filter);</span>
<span class="line" id="L604"> }</span>
<span class="line" id="L605"> }</span>
<span class="line" id="L606"></span>
<span class="line" id="L607"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L608"> self.bsdAddKev(&resume_node, ident, filter, flags) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L609"> }</span>
<span class="line" id="L610"> }</span>
<span class="line" id="L611"></span>
<span class="line" id="L612"> <span class="tok-comment">/// resume_node must live longer than the anyframe that it holds a reference to.</span></span>
<span class="line" id="L613"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">bsdAddKev</span>(self: *Loop, resume_node: *ResumeNode.Basic, ident: <span class="tok-type">usize</span>, filter: <span class="tok-type">i16</span>, flags: <span class="tok-type">u16</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L614"> self.beginOneEvent();</span>
<span class="line" id="L615"> <span class="tok-kw">errdefer</span> self.finishOneEvent();</span>
<span class="line" id="L616"> <span class="tok-kw">var</span> kev = [<span class="tok-number">1</span>]os.Kevent{os.Kevent{</span>
<span class="line" id="L617"> .ident = ident,</span>
<span class="line" id="L618"> .filter = filter,</span>
<span class="line" id="L619"> .flags = os.system.EV_ADD | os.system.EV_ENABLE | os.system.EV_CLEAR | flags,</span>
<span class="line" id="L620"> .fflags = <span class="tok-number">0</span>,</span>
<span class="line" id="L621"> .data = <span class="tok-number">0</span>,</span>
<span class="line" id="L622"> .udata = <span class="tok-builtin">@intFromPtr</span>(&resume_node.base),</span>
<span class="line" id="L623"> }};</span>
<span class="line" id="L624"> <span class="tok-kw">const</span> empty_kevs = &[<span class="tok-number">0</span>]os.Kevent{};</span>
<span class="line" id="L625"> _ = <span class="tok-kw">try</span> os.kevent(self.os_data.kqfd, &kev, empty_kevs, <span class="tok-null">null</span>);</span>
<span class="line" id="L626"> }</span>
<span class="line" id="L627"></span>
<span class="line" id="L628"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">bsdRemoveKev</span>(self: *Loop, ident: <span class="tok-type">usize</span>, filter: <span class="tok-type">i16</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L629"> <span class="tok-kw">var</span> kev = [<span class="tok-number">1</span>]os.Kevent{os.Kevent{</span>
<span class="line" id="L630"> .ident = ident,</span>
<span class="line" id="L631"> .filter = filter,</span>
<span class="line" id="L632"> .flags = os.system.EV_DELETE,</span>
<span class="line" id="L633"> .fflags = <span class="tok-number">0</span>,</span>
<span class="line" id="L634"> .data = <span class="tok-number">0</span>,</span>
<span class="line" id="L635"> .udata = <span class="tok-number">0</span>,</span>
<span class="line" id="L636"> }};</span>
<span class="line" id="L637"> <span class="tok-kw">const</span> empty_kevs = &[<span class="tok-number">0</span>]os.Kevent{};</span>
<span class="line" id="L638"> _ = os.kevent(self.os_data.kqfd, &kev, empty_kevs, <span class="tok-null">null</span>) <span class="tok-kw">catch</span> <span class="tok-null">undefined</span>;</span>
<span class="line" id="L639"> self.finishOneEvent();</span>
<span class="line" id="L640"> }</span>
<span class="line" id="L641"></span>
<span class="line" id="L642"> <span class="tok-kw">fn</span> <span class="tok-fn">dispatch</span>(self: *Loop) <span class="tok-type">void</span> {</span>
<span class="line" id="L643"> <span class="tok-kw">while</span> (self.available_eventfd_resume_nodes.pop()) |resume_stack_node| {</span>
<span class="line" id="L644"> <span class="tok-kw">const</span> next_tick_node = self.next_tick_queue.get() <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L645"> self.available_eventfd_resume_nodes.push(resume_stack_node);</span>
<span class="line" id="L646"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L647"> };</span>
<span class="line" id="L648"> <span class="tok-kw">const</span> eventfd_node = &resume_stack_node.data;</span>
<span class="line" id="L649"> eventfd_node.base.handle = next_tick_node.data;</span>
<span class="line" id="L650"> <span class="tok-kw">switch</span> (builtin.os.tag) {</span>
<span class="line" id="L651"> .macos, .ios, .tvos, .watchos, .freebsd, .netbsd, .dragonfly, .openbsd => {</span>
<span class="line" id="L652"> <span class="tok-kw">const</span> kevent_array = <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> [<span class="tok-number">1</span>]os.Kevent, &eventfd_node.kevent);</span>
<span class="line" id="L653"> <span class="tok-kw">const</span> empty_kevs = &[<span class="tok-number">0</span>]os.Kevent{};</span>
<span class="line" id="L654"> _ = os.kevent(self.os_data.kqfd, kevent_array, empty_kevs, <span class="tok-null">null</span>) <span class="tok-kw">catch</span> {</span>
<span class="line" id="L655"> self.next_tick_queue.unget(next_tick_node);</span>
<span class="line" id="L656"> self.available_eventfd_resume_nodes.push(resume_stack_node);</span>
<span class="line" id="L657"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L658"> };</span>
<span class="line" id="L659"> },</span>
<span class="line" id="L660"> .linux => {</span>
<span class="line" id="L661"> <span class="tok-comment">// the pending count is already accounted for</span>
</span>
<span class="line" id="L662"> <span class="tok-kw">const</span> epoll_events = os.linux.EPOLL.ONESHOT | os.linux.EPOLL.IN | os.linux.EPOLL.OUT |</span>
<span class="line" id="L663"> os.linux.EPOLL.ET;</span>
<span class="line" id="L664"> self.linuxModFd(</span>
<span class="line" id="L665"> eventfd_node.eventfd,</span>
<span class="line" id="L666"> eventfd_node.epoll_op,</span>
<span class="line" id="L667"> epoll_events,</span>
<span class="line" id="L668"> &eventfd_node.base,</span>
<span class="line" id="L669"> ) <span class="tok-kw">catch</span> {</span>
<span class="line" id="L670"> self.next_tick_queue.unget(next_tick_node);</span>
<span class="line" id="L671"> self.available_eventfd_resume_nodes.push(resume_stack_node);</span>
<span class="line" id="L672"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L673"> };</span>
<span class="line" id="L674"> },</span>
<span class="line" id="L675"> .windows => {</span>
<span class="line" id="L676"> windows.PostQueuedCompletionStatus(</span>
<span class="line" id="L677"> self.os_data.io_port,</span>
<span class="line" id="L678"> <span class="tok-null">undefined</span>,</span>
<span class="line" id="L679"> <span class="tok-null">undefined</span>,</span>
<span class="line" id="L680"> &eventfd_node.base.overlapped,</span>
<span class="line" id="L681"> ) <span class="tok-kw">catch</span> {</span>
<span class="line" id="L682"> self.next_tick_queue.unget(next_tick_node);</span>
<span class="line" id="L683"> self.available_eventfd_resume_nodes.push(resume_stack_node);</span>
<span class="line" id="L684"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L685"> };</span>
<span class="line" id="L686"> },</span>
<span class="line" id="L687"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"unsupported OS"</span>),</span>
<span class="line" id="L688"> }</span>
<span class="line" id="L689"> }</span>
<span class="line" id="L690"> }</span>
<span class="line" id="L691"></span>
<span class="line" id="L692"> <span class="tok-comment">/// Bring your own linked list node. This means it can't fail.</span></span>
<span class="line" id="L693"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">onNextTick</span>(self: *Loop, node: *NextTickNode) <span class="tok-type">void</span> {</span>
<span class="line" id="L694"> self.beginOneEvent(); <span class="tok-comment">// finished in dispatch()</span>
</span>
<span class="line" id="L695"> self.next_tick_queue.put(node);</span>
<span class="line" id="L696"> self.dispatch();</span>
<span class="line" id="L697"> }</span>
<span class="line" id="L698"></span>
<span class="line" id="L699"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">cancelOnNextTick</span>(self: *Loop, node: *NextTickNode) <span class="tok-type">void</span> {</span>
<span class="line" id="L700"> <span class="tok-kw">if</span> (self.next_tick_queue.remove(node)) {</span>
<span class="line" id="L701"> self.finishOneEvent();</span>
<span class="line" id="L702"> }</span>
<span class="line" id="L703"> }</span>
<span class="line" id="L704"></span>
<span class="line" id="L705"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">run</span>(self: *Loop) <span class="tok-type">void</span> {</span>
<span class="line" id="L706"> self.finishOneEvent(); <span class="tok-comment">// the reference we start with</span>
</span>
<span class="line" id="L707"></span>
<span class="line" id="L708"> self.workerRun();</span>
<span class="line" id="L709"></span>
<span class="line" id="L710"> <span class="tok-kw">if</span> (!builtin.single_threaded) {</span>
<span class="line" id="L711"> <span class="tok-kw">switch</span> (builtin.os.tag) {</span>
<span class="line" id="L712"> .linux,</span>
<span class="line" id="L713"> .macos,</span>
<span class="line" id="L714"> .ios,</span>
<span class="line" id="L715"> .tvos,</span>
<span class="line" id="L716"> .watchos,</span>
<span class="line" id="L717"> .freebsd,</span>
<span class="line" id="L718"> .netbsd,</span>
<span class="line" id="L719"> .dragonfly,</span>
<span class="line" id="L720"> .openbsd,</span>
<span class="line" id="L721"> => self.fs_thread.join(),</span>
<span class="line" id="L722"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L723"> }</span>
<span class="line" id="L724"> }</span>
<span class="line" id="L725"></span>
<span class="line" id="L726"> <span class="tok-kw">for</span> (self.extra_threads) |extra_thread| {</span>
<span class="line" id="L727"> extra_thread.join();</span>
<span class="line" id="L728"> }</span>
<span class="line" id="L729"></span>
<span class="line" id="L730"> self.delay_queue.deinit();</span>
<span class="line" id="L731"> }</span>
<span class="line" id="L732"></span>
<span class="line" id="L733"> <span class="tok-comment">/// Runs the provided function asynchronously. The function's frame is allocated</span></span>
<span class="line" id="L734"> <span class="tok-comment">/// with `allocator` and freed when the function returns.</span></span>
<span class="line" id="L735"> <span class="tok-comment">/// `func` must return void and it can be an async function.</span></span>
<span class="line" id="L736"> <span class="tok-comment">/// Yields to the event loop, running the function on the next tick.</span></span>
<span class="line" id="L737"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">runDetached</span>(self: *Loop, alloc: mem.Allocator, <span class="tok-kw">comptime</span> func: <span class="tok-kw">anytype</span>, args: <span class="tok-kw">anytype</span>) <span class="tok-kw">error</span>{OutOfMemory}!<span class="tok-type">void</span> {</span>
<span class="line" id="L738"> <span class="tok-kw">if</span> (!std.io.is_async) <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Can't use runDetached in non-async mode!"</span>);</span>
<span class="line" id="L739"> <span class="tok-kw">if</span> (<span class="tok-builtin">@TypeOf</span>(<span class="tok-builtin">@call</span>(.{}, func, args)) != <span class="tok-type">void</span>) {</span>
<span class="line" id="L740"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"`func` must not have a return value"</span>);</span>
<span class="line" id="L741"> }</span>
<span class="line" id="L742"></span>
<span class="line" id="L743"> <span class="tok-kw">const</span> Wrapper = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L744"> <span class="tok-kw">const</span> Args = <span class="tok-builtin">@TypeOf</span>(args);</span>
<span class="line" id="L745"> <span class="tok-kw">fn</span> <span class="tok-fn">run</span>(func_args: Args, loop: *Loop, allocator: mem.Allocator) <span class="tok-type">void</span> {</span>
<span class="line" id="L746"> loop.beginOneEvent();</span>
<span class="line" id="L747"> loop.yield();</span>
<span class="line" id="L748"> <span class="tok-builtin">@call</span>(.{}, func, func_args); <span class="tok-comment">// compile error when called with non-void ret type</span>
</span>
<span class="line" id="L749"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L750"> loop.finishOneEvent();</span>
<span class="line" id="L751"> allocator.destroy(<span class="tok-builtin">@frame</span>());</span>
<span class="line" id="L752"> }</span>
<span class="line" id="L753"> }</span>
<span class="line" id="L754"> };</span>
<span class="line" id="L755"></span>
<span class="line" id="L756"> <span class="tok-kw">var</span> run_frame = <span class="tok-kw">try</span> alloc.create(<span class="tok-builtin">@Frame</span>(Wrapper.run));</span>
<span class="line" id="L757"> run_frame.* = <span class="tok-kw">async</span> Wrapper.run(args, self, alloc);</span>
<span class="line" id="L758"> }</span>
<span class="line" id="L759"></span>
<span class="line" id="L760"> <span class="tok-comment">/// Yielding lets the event loop run, starting any unstarted async operations.</span></span>
<span class="line" id="L761"> <span class="tok-comment">/// Note that async operations automatically start when a function yields for any other reason,</span></span>
<span class="line" id="L762"> <span class="tok-comment">/// for example, when async I/O is performed. This function is intended to be used only when</span></span>
<span class="line" id="L763"> <span class="tok-comment">/// CPU bound tasks would be waiting in the event loop but never get started because no async I/O</span></span>
<span class="line" id="L764"> <span class="tok-comment">/// is performed.</span></span>
<span class="line" id="L765"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">yield</span>(self: *Loop) <span class="tok-type">void</span> {</span>
<span class="line" id="L766"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L767"> <span class="tok-kw">var</span> my_tick_node = NextTickNode{</span>
<span class="line" id="L768"> .prev = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L769"> .next = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L770"> .data = <span class="tok-builtin">@frame</span>(),</span>
<span class="line" id="L771"> };</span>
<span class="line" id="L772"> self.onNextTick(&my_tick_node);</span>
<span class="line" id="L773"> }</span>
<span class="line" id="L774"> }</span>
<span class="line" id="L775"></span>
<span class="line" id="L776"> <span class="tok-comment">/// If the build is multi-threaded and there is an event loop, then it calls `yield`. Otherwise,</span></span>
<span class="line" id="L777"> <span class="tok-comment">/// does nothing.</span></span>
<span class="line" id="L778"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">startCpuBoundOperation</span>() <span class="tok-type">void</span> {</span>
<span class="line" id="L779"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L780"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L781"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (instance) |event_loop| {</span>
<span class="line" id="L782"> event_loop.yield();</span>
<span class="line" id="L783"> }</span>
<span class="line" id="L784"> }</span>
<span class="line" id="L785"></span>
<span class="line" id="L786"> <span class="tok-comment">/// call finishOneEvent when done</span></span>
<span class="line" id="L787"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">beginOneEvent</span>(self: *Loop) <span class="tok-type">void</span> {</span>
<span class="line" id="L788"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &self.pending_event_count, .Add, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L789"> }</span>
<span class="line" id="L790"></span>
<span class="line" id="L791"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">finishOneEvent</span>(self: *Loop) <span class="tok-type">void</span> {</span>
<span class="line" id="L792"> <span class="tok-kw">nosuspend</span> {</span>
<span class="line" id="L793"> <span class="tok-kw">const</span> prev = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &self.pending_event_count, .Sub, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L794"> <span class="tok-kw">if</span> (prev != <span class="tok-number">1</span>) <span class="tok-kw">return</span>;</span>
<span class="line" id="L795"></span>
<span class="line" id="L796"> <span class="tok-comment">// cause all the threads to stop</span>
</span>
<span class="line" id="L797"> self.posixFsRequest(&self.fs_end_request);</span>
<span class="line" id="L798"></span>
<span class="line" id="L799"> <span class="tok-kw">switch</span> (builtin.os.tag) {</span>
<span class="line" id="L800"> .linux => {</span>
<span class="line" id="L801"> <span class="tok-comment">// writing to the eventfd will only wake up one thread, thus multiple writes</span>
</span>
<span class="line" id="L802"> <span class="tok-comment">// are needed to wakeup all the threads</span>
</span>
<span class="line" id="L803"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L804"> <span class="tok-kw">while</span> (i < self.extra_threads.len + <span class="tok-number">1</span>) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L805"> <span class="tok-comment">// writing 8 bytes to an eventfd cannot fail</span>
</span>
<span class="line" id="L806"> <span class="tok-kw">const</span> amt = os.write(self.os_data.final_eventfd, &wakeup_bytes) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L807"> assert(amt == wakeup_bytes.len);</span>
<span class="line" id="L808"> }</span>
<span class="line" id="L809"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L810"> },</span>
<span class="line" id="L811"> .macos, .ios, .tvos, .watchos, .freebsd, .netbsd, .dragonfly, .openbsd => {</span>
<span class="line" id="L812"> <span class="tok-kw">const</span> final_kevent = <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> [<span class="tok-number">1</span>]os.Kevent, &self.os_data.final_kevent);</span>
<span class="line" id="L813"> <span class="tok-kw">const</span> empty_kevs = &[<span class="tok-number">0</span>]os.Kevent{};</span>
<span class="line" id="L814"> <span class="tok-comment">// cannot fail because we already added it and this just enables it</span>
</span>
<span class="line" id="L815"> _ = os.kevent(self.os_data.kqfd, final_kevent, empty_kevs, <span class="tok-null">null</span>) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L816"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L817"> },</span>
<span class="line" id="L818"> .windows => {</span>
<span class="line" id="L819"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L820"> <span class="tok-kw">while</span> (i < self.extra_threads.len + <span class="tok-number">1</span>) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L821"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L822"> <span class="tok-kw">const</span> overlapped = &self.final_resume_node.overlapped;</span>
<span class="line" id="L823"> windows.PostQueuedCompletionStatus(self.os_data.io_port, <span class="tok-null">undefined</span>, <span class="tok-null">undefined</span>, overlapped) <span class="tok-kw">catch</span> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L824"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L825"> }</span>
<span class="line" id="L826"> }</span>
<span class="line" id="L827"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L828"> },</span>
<span class="line" id="L829"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"unsupported OS"</span>),</span>
<span class="line" id="L830"> }</span>
<span class="line" id="L831"> }</span>
<span class="line" id="L832"> }</span>
<span class="line" id="L833"></span>
<span class="line" id="L834"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">sleep</span>(self: *Loop, nanoseconds: <span class="tok-type">u64</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L835"> <span class="tok-kw">if</span> (builtin.single_threaded)</span>
<span class="line" id="L836"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"TODO: integrate timers with epoll/kevent/iocp for single-threaded"</span>);</span>
<span class="line" id="L837"></span>
<span class="line" id="L838"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L839"> <span class="tok-kw">const</span> now = self.delay_queue.timer.read();</span>
<span class="line" id="L840"></span>
<span class="line" id="L841"> <span class="tok-kw">var</span> entry: DelayQueue.Waiters.Entry = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L842"> entry.init(<span class="tok-builtin">@frame</span>(), now + nanoseconds);</span>
<span class="line" id="L843"> self.delay_queue.waiters.insert(&entry);</span>
<span class="line" id="L844"></span>
<span class="line" id="L845"> <span class="tok-comment">// Speculatively wake up the timer thread when we add a new entry.</span>
</span>
<span class="line" id="L846"> <span class="tok-comment">// If the timer thread is sleeping on a longer entry, we need to</span>
</span>
<span class="line" id="L847"> <span class="tok-comment">// interrupt it so that our entry can be expired in time.</span>
</span>
<span class="line" id="L848"> self.delay_queue.event.set();</span>
<span class="line" id="L849"> }</span>
<span class="line" id="L850"> }</span>
<span class="line" id="L851"></span>
<span class="line" id="L852"> <span class="tok-kw">const</span> DelayQueue = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L853"> timer: std.time.Timer,</span>
<span class="line" id="L854"> waiters: Waiters,</span>
<span class="line" id="L855"> thread: std.Thread,</span>
<span class="line" id="L856"> event: std.Thread.ResetEvent,</span>
<span class="line" id="L857"> is_running: Atomic(<span class="tok-type">bool</span>),</span>
<span class="line" id="L858"></span>
<span class="line" id="L859"> <span class="tok-comment">/// Initialize the delay queue by spawning the timer thread</span></span>
<span class="line" id="L860"> <span class="tok-comment">/// and starting any timer resources.</span></span>
<span class="line" id="L861"> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(self: *DelayQueue) !<span class="tok-type">void</span> {</span>
<span class="line" id="L862"> self.* = DelayQueue{</span>
<span class="line" id="L863"> .timer = <span class="tok-kw">try</span> std.time.Timer.start(),</span>
<span class="line" id="L864"> .waiters = DelayQueue.Waiters{</span>
<span class="line" id="L865"> .entries = std.atomic.Queue(<span class="tok-kw">anyframe</span>).init(),</span>
<span class="line" id="L866"> },</span>
<span class="line" id="L867"> .thread = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L868"> .event = .{},</span>
<span class="line" id="L869"> .is_running = Atomic(<span class="tok-type">bool</span>).init(<span class="tok-null">true</span>),</span>
<span class="line" id="L870"> };</span>
<span class="line" id="L871"></span>
<span class="line" id="L872"> <span class="tok-comment">// Must be after init so that it can read the other state, such as `is_running`.</span>
</span>
<span class="line" id="L873"> self.thread = <span class="tok-kw">try</span> std.Thread.spawn(.{}, DelayQueue.run, .{self});</span>
<span class="line" id="L874"> }</span>
<span class="line" id="L875"></span>
<span class="line" id="L876"> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *DelayQueue) <span class="tok-type">void</span> {</span>
<span class="line" id="L877"> self.is_running.store(<span class="tok-null">false</span>, .SeqCst);</span>
<span class="line" id="L878"> self.event.set();</span>
<span class="line" id="L879"> self.thread.join();</span>
<span class="line" id="L880"> }</span>
<span class="line" id="L881"></span>
<span class="line" id="L882"> <span class="tok-comment">/// Entry point for the timer thread</span></span>
<span class="line" id="L883"> <span class="tok-comment">/// which waits for timer entries to expire and reschedules them.</span></span>
<span class="line" id="L884"> <span class="tok-kw">fn</span> <span class="tok-fn">run</span>(self: *DelayQueue) <span class="tok-type">void</span> {</span>
<span class="line" id="L885"> <span class="tok-kw">const</span> loop = <span class="tok-builtin">@fieldParentPtr</span>(Loop, <span class="tok-str">"delay_queue"</span>, self);</span>
<span class="line" id="L886"></span>
<span class="line" id="L887"> <span class="tok-kw">while</span> (self.is_running.load(.SeqCst)) {</span>
<span class="line" id="L888"> self.event.reset();</span>
<span class="line" id="L889"> <span class="tok-kw">const</span> now = self.timer.read();</span>
<span class="line" id="L890"></span>
<span class="line" id="L891"> <span class="tok-kw">if</span> (self.waiters.popExpired(now)) |entry| {</span>
<span class="line" id="L892"> loop.onNextTick(&entry.node);</span>
<span class="line" id="L893"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L894"> }</span>
<span class="line" id="L895"></span>
<span class="line" id="L896"> <span class="tok-kw">if</span> (self.waiters.nextExpire()) |expires| {</span>
<span class="line" id="L897"> <span class="tok-kw">if</span> (now >= expires)</span>
<span class="line" id="L898"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L899"> self.event.timedWait(expires - now) <span class="tok-kw">catch</span> {};</span>
<span class="line" id="L900"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L901"> self.event.wait();</span>
<span class="line" id="L902"> }</span>
<span class="line" id="L903"> }</span>
<span class="line" id="L904"> }</span>
<span class="line" id="L905"></span>
<span class="line" id="L906"> <span class="tok-comment">// TODO: use a tickless hierarchical timer wheel:</span>
</span>
<span class="line" id="L907"> <span class="tok-comment">// https://github.com/wahern/timeout/</span>
</span>
<span class="line" id="L908"> <span class="tok-kw">const</span> Waiters = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L909"> entries: std.atomic.Queue(<span class="tok-kw">anyframe</span>),</span>
<span class="line" id="L910"></span>
<span class="line" id="L911"> <span class="tok-kw">const</span> Entry = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L912"> node: NextTickNode,</span>
<span class="line" id="L913"> expires: <span class="tok-type">u64</span>,</span>
<span class="line" id="L914"></span>
<span class="line" id="L915"> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(self: *Entry, frame: <span class="tok-kw">anyframe</span>, expires: <span class="tok-type">u64</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L916"> self.node.data = frame;</span>
<span class="line" id="L917"> self.expires = expires;</span>
<span class="line" id="L918"> }</span>
<span class="line" id="L919"> };</span>
<span class="line" id="L920"></span>
<span class="line" id="L921"> <span class="tok-comment">/// Registers the entry into the queue of waiting frames</span></span>
<span class="line" id="L922"> <span class="tok-kw">fn</span> <span class="tok-fn">insert</span>(self: *Waiters, entry: *Entry) <span class="tok-type">void</span> {</span>
<span class="line" id="L923"> self.entries.put(&entry.node);</span>
<span class="line" id="L924"> }</span>
<span class="line" id="L925"></span>
<span class="line" id="L926"> <span class="tok-comment">/// Dequeues one expired event relative to `now`</span></span>
<span class="line" id="L927"> <span class="tok-kw">fn</span> <span class="tok-fn">popExpired</span>(self: *Waiters, now: <span class="tok-type">u64</span>) ?*Entry {</span>
<span class="line" id="L928"> <span class="tok-kw">const</span> entry = self.peekExpiringEntry() <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L929"> <span class="tok-kw">if</span> (entry.expires > now)</span>
<span class="line" id="L930"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L931"></span>
<span class="line" id="L932"> assert(self.entries.remove(&entry.node));</span>
<span class="line" id="L933"> <span class="tok-kw">return</span> entry;</span>
<span class="line" id="L934"> }</span>
<span class="line" id="L935"></span>
<span class="line" id="L936"> <span class="tok-comment">/// Returns an estimate for the amount of time</span></span>
<span class="line" id="L937"> <span class="tok-comment">/// to wait until the next waiting entry expires.</span></span>
<span class="line" id="L938"> <span class="tok-kw">fn</span> <span class="tok-fn">nextExpire</span>(self: *Waiters) ?<span class="tok-type">u64</span> {</span>
<span class="line" id="L939"> <span class="tok-kw">const</span> entry = self.peekExpiringEntry() <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L940"> <span class="tok-kw">return</span> entry.expires;</span>
<span class="line" id="L941"> }</span>
<span class="line" id="L942"></span>
<span class="line" id="L943"> <span class="tok-kw">fn</span> <span class="tok-fn">peekExpiringEntry</span>(self: *Waiters) ?*Entry {</span>
<span class="line" id="L944"> self.entries.mutex.lock();</span>
<span class="line" id="L945"> <span class="tok-kw">defer</span> self.entries.mutex.unlock();</span>
<span class="line" id="L946"></span>
<span class="line" id="L947"> <span class="tok-comment">// starting from the head</span>
</span>
<span class="line" id="L948"> <span class="tok-kw">var</span> head = self.entries.head <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L949"></span>
<span class="line" id="L950"> <span class="tok-comment">// traverse the list of waiting entries to</span>
</span>
<span class="line" id="L951"> <span class="tok-comment">// find the Node with the smallest `expires` field</span>
</span>
<span class="line" id="L952"> <span class="tok-kw">var</span> min = head;</span>
<span class="line" id="L953"> <span class="tok-kw">while</span> (head.next) |node| {</span>
<span class="line" id="L954"> <span class="tok-kw">const</span> minEntry = <span class="tok-builtin">@fieldParentPtr</span>(Entry, <span class="tok-str">"node"</span>, min);</span>
<span class="line" id="L955"> <span class="tok-kw">const</span> nodeEntry = <span class="tok-builtin">@fieldParentPtr</span>(Entry, <span class="tok-str">"node"</span>, node);</span>
<span class="line" id="L956"> <span class="tok-kw">if</span> (nodeEntry.expires < minEntry.expires)</span>
<span class="line" id="L957"> min = node;</span>
<span class="line" id="L958"> head = node;</span>
<span class="line" id="L959"> }</span>
<span class="line" id="L960"></span>
<span class="line" id="L961"> <span class="tok-kw">return</span> <span class="tok-builtin">@fieldParentPtr</span>(Entry, <span class="tok-str">"node"</span>, min);</span>
<span class="line" id="L962"> }</span>
<span class="line" id="L963"> };</span>
<span class="line" id="L964"> };</span>
<span class="line" id="L965"></span>
<span class="line" id="L966"> <span class="tok-comment">/// ------- I/0 APIs -------</span></span>
<span class="line" id="L967"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">accept</span>(</span>
<span class="line" id="L968"> self: *Loop,</span>
<span class="line" id="L969"> <span class="tok-comment">/// This argument is a socket that has been created with `socket`, bound to a local address</span></span>
<span class="line" id="L970"> <span class="tok-comment">/// with `bind`, and is listening for connections after a `listen`.</span></span>
<span class="line" id="L971"> sockfd: os.socket_t,</span>
<span class="line" id="L972"> <span class="tok-comment">/// This argument is a pointer to a sockaddr structure. This structure is filled in with the</span></span>
<span class="line" id="L973"> <span class="tok-comment">/// address of the peer socket, as known to the communications layer. The exact format of the</span></span>
<span class="line" id="L974"> <span class="tok-comment">/// address returned addr is determined by the socket's address family (see `socket` and the</span></span>
<span class="line" id="L975"> <span class="tok-comment">/// respective protocol man pages).</span></span>
<span class="line" id="L976"> addr: *os.sockaddr,</span>
<span class="line" id="L977"> <span class="tok-comment">/// This argument is a value-result argument: the caller must initialize it to contain the</span></span>
<span class="line" id="L978"> <span class="tok-comment">/// size (in bytes) of the structure pointed to by addr; on return it will contain the actual size</span></span>
<span class="line" id="L979"> <span class="tok-comment">/// of the peer address.</span></span>
<span class="line" id="L980"> <span class="tok-comment">///</span></span>
<span class="line" id="L981"> <span class="tok-comment">/// The returned address is truncated if the buffer provided is too small; in this case, `addr_size`</span></span>
<span class="line" id="L982"> <span class="tok-comment">/// will return a value greater than was supplied to the call.</span></span>
<span class="line" id="L983"> addr_size: *os.socklen_t,</span>
<span class="line" id="L984"> <span class="tok-comment">/// The following values can be bitwise ORed in flags to obtain different behavior:</span></span>
<span class="line" id="L985"> <span class="tok-comment">/// * `SOCK.CLOEXEC` - Set the close-on-exec (`FD_CLOEXEC`) flag on the new file descriptor. See the</span></span>
<span class="line" id="L986"> <span class="tok-comment">/// description of the `O.CLOEXEC` flag in `open` for reasons why this may be useful.</span></span>
<span class="line" id="L987"> flags: <span class="tok-type">u32</span>,</span>
<span class="line" id="L988"> ) os.AcceptError!os.socket_t {</span>
<span class="line" id="L989"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L990"> <span class="tok-kw">return</span> os.accept(sockfd, addr, addr_size, flags | os.SOCK.NONBLOCK) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L991"> <span class="tok-kw">error</span>.WouldBlock => {</span>
<span class="line" id="L992"> self.waitUntilFdReadable(sockfd);</span>
<span class="line" id="L993"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L994"> },</span>
<span class="line" id="L995"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> err,</span>
<span class="line" id="L996"> };</span>
<span class="line" id="L997"> }</span>
<span class="line" id="L998"> }</span>
<span class="line" id="L999"></span>
<span class="line" id="L1000"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">connect</span>(self: *Loop, sockfd: os.socket_t, sock_addr: *<span class="tok-kw">const</span> os.sockaddr, len: os.socklen_t) os.ConnectError!<span class="tok-type">void</span> {</span>
<span class="line" id="L1001"> os.connect(sockfd, sock_addr, len) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L1002"> <span class="tok-kw">error</span>.WouldBlock => {</span>
<span class="line" id="L1003"> self.waitUntilFdWritable(sockfd);</span>
<span class="line" id="L1004"> <span class="tok-kw">return</span> os.getsockoptError(sockfd);</span>
<span class="line" id="L1005"> },</span>
<span class="line" id="L1006"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> err,</span>
<span class="line" id="L1007"> };</span>
<span class="line" id="L1008"> }</span>
<span class="line" id="L1009"></span>
<span class="line" id="L1010"> <span class="tok-comment">/// Performs an async `os.open` using a separate thread.</span></span>
<span class="line" id="L1011"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">openZ</span>(self: *Loop, file_path: [*:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span>, flags: <span class="tok-type">u32</span>, mode: os.mode_t) os.OpenError!os.fd_t {</span>
<span class="line" id="L1012"> <span class="tok-kw">var</span> req_node = Request.Node{</span>
<span class="line" id="L1013"> .data = .{</span>
<span class="line" id="L1014"> .msg = .{</span>
<span class="line" id="L1015"> .open = .{</span>
<span class="line" id="L1016"> .path = file_path,</span>
<span class="line" id="L1017"> .flags = flags,</span>
<span class="line" id="L1018"> .mode = mode,</span>
<span class="line" id="L1019"> .result = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1020"> },</span>
<span class="line" id="L1021"> },</span>
<span class="line" id="L1022"> .finish = .{ .tick_node = .{ .data = <span class="tok-builtin">@frame</span>() } },</span>
<span class="line" id="L1023"> },</span>
<span class="line" id="L1024"> };</span>
<span class="line" id="L1025"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L1026"> self.posixFsRequest(&req_node);</span>
<span class="line" id="L1027"> }</span>
<span class="line" id="L1028"> <span class="tok-kw">return</span> req_node.data.msg.open.result;</span>
<span class="line" id="L1029"> }</span>
<span class="line" id="L1030"></span>
<span class="line" id="L1031"> <span class="tok-comment">/// Performs an async `os.opent` using a separate thread.</span></span>
<span class="line" id="L1032"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">openatZ</span>(self: *Loop, fd: os.fd_t, file_path: [*:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span>, flags: <span class="tok-type">u32</span>, mode: os.mode_t) os.OpenError!os.fd_t {</span>
<span class="line" id="L1033"> <span class="tok-kw">var</span> req_node = Request.Node{</span>
<span class="line" id="L1034"> .data = .{</span>
<span class="line" id="L1035"> .msg = .{</span>
<span class="line" id="L1036"> .openat = .{</span>
<span class="line" id="L1037"> .fd = fd,</span>
<span class="line" id="L1038"> .path = file_path,</span>
<span class="line" id="L1039"> .flags = flags,</span>
<span class="line" id="L1040"> .mode = mode,</span>
<span class="line" id="L1041"> .result = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1042"> },</span>
<span class="line" id="L1043"> },</span>
<span class="line" id="L1044"> .finish = .{ .tick_node = .{ .data = <span class="tok-builtin">@frame</span>() } },</span>
<span class="line" id="L1045"> },</span>
<span class="line" id="L1046"> };</span>
<span class="line" id="L1047"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L1048"> self.posixFsRequest(&req_node);</span>
<span class="line" id="L1049"> }</span>
<span class="line" id="L1050"> <span class="tok-kw">return</span> req_node.data.msg.openat.result;</span>
<span class="line" id="L1051"> }</span>
<span class="line" id="L1052"></span>
<span class="line" id="L1053"> <span class="tok-comment">/// Performs an async `os.close` using a separate thread.</span></span>
<span class="line" id="L1054"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">close</span>(self: *Loop, fd: os.fd_t) <span class="tok-type">void</span> {</span>
<span class="line" id="L1055"> <span class="tok-kw">var</span> req_node = Request.Node{</span>
<span class="line" id="L1056"> .data = .{</span>
<span class="line" id="L1057"> .msg = .{ .close = .{ .fd = fd } },</span>
<span class="line" id="L1058"> .finish = .{ .tick_node = .{ .data = <span class="tok-builtin">@frame</span>() } },</span>
<span class="line" id="L1059"> },</span>
<span class="line" id="L1060"> };</span>
<span class="line" id="L1061"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L1062"> self.posixFsRequest(&req_node);</span>
<span class="line" id="L1063"> }</span>
<span class="line" id="L1064"> }</span>
<span class="line" id="L1065"></span>
<span class="line" id="L1066"> <span class="tok-comment">/// Performs an async `os.read` using a separate thread.</span></span>
<span class="line" id="L1067"> <span class="tok-comment">/// `fd` must block and not return EAGAIN.</span></span>
<span class="line" id="L1068"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">read</span>(self: *Loop, fd: os.fd_t, buf: []<span class="tok-type">u8</span>, simulate_evented: <span class="tok-type">bool</span>) os.ReadError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L1069"> <span class="tok-kw">if</span> (simulate_evented) {</span>
<span class="line" id="L1070"> <span class="tok-kw">var</span> req_node = Request.Node{</span>
<span class="line" id="L1071"> .data = .{</span>
<span class="line" id="L1072"> .msg = .{</span>
<span class="line" id="L1073"> .read = .{</span>
<span class="line" id="L1074"> .fd = fd,</span>
<span class="line" id="L1075"> .buf = buf,</span>
<span class="line" id="L1076"> .result = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1077"> },</span>
<span class="line" id="L1078"> },</span>
<span class="line" id="L1079"> .finish = .{ .tick_node = .{ .data = <span class="tok-builtin">@frame</span>() } },</span>
<span class="line" id="L1080"> },</span>
<span class="line" id="L1081"> };</span>
<span class="line" id="L1082"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L1083"> self.posixFsRequest(&req_node);</span>
<span class="line" id="L1084"> }</span>
<span class="line" id="L1085"> <span class="tok-kw">return</span> req_node.data.msg.read.result;</span>
<span class="line" id="L1086"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1087"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1088"> <span class="tok-kw">return</span> os.read(fd, buf) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L1089"> <span class="tok-kw">error</span>.WouldBlock => {</span>
<span class="line" id="L1090"> self.waitUntilFdReadable(fd);</span>
<span class="line" id="L1091"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L1092"> },</span>
<span class="line" id="L1093"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> err,</span>
<span class="line" id="L1094"> };</span>
<span class="line" id="L1095"> }</span>
<span class="line" id="L1096"> }</span>
<span class="line" id="L1097"> }</span>
<span class="line" id="L1098"></span>
<span class="line" id="L1099"> <span class="tok-comment">/// Performs an async `os.readv` using a separate thread.</span></span>
<span class="line" id="L1100"> <span class="tok-comment">/// `fd` must block and not return EAGAIN.</span></span>
<span class="line" id="L1101"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">readv</span>(self: *Loop, fd: os.fd_t, iov: []<span class="tok-kw">const</span> os.iovec, simulate_evented: <span class="tok-type">bool</span>) os.ReadError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L1102"> <span class="tok-kw">if</span> (simulate_evented) {</span>
<span class="line" id="L1103"> <span class="tok-kw">var</span> req_node = Request.Node{</span>
<span class="line" id="L1104"> .data = .{</span>
<span class="line" id="L1105"> .msg = .{</span>
<span class="line" id="L1106"> .readv = .{</span>
<span class="line" id="L1107"> .fd = fd,</span>
<span class="line" id="L1108"> .iov = iov,</span>
<span class="line" id="L1109"> .result = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1110"> },</span>
<span class="line" id="L1111"> },</span>
<span class="line" id="L1112"> .finish = .{ .tick_node = .{ .data = <span class="tok-builtin">@frame</span>() } },</span>
<span class="line" id="L1113"> },</span>
<span class="line" id="L1114"> };</span>
<span class="line" id="L1115"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L1116"> self.posixFsRequest(&req_node);</span>
<span class="line" id="L1117"> }</span>
<span class="line" id="L1118"> <span class="tok-kw">return</span> req_node.data.msg.readv.result;</span>
<span class="line" id="L1119"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1120"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1121"> <span class="tok-kw">return</span> os.readv(fd, iov) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L1122"> <span class="tok-kw">error</span>.WouldBlock => {</span>
<span class="line" id="L1123"> self.waitUntilFdReadable(fd);</span>
<span class="line" id="L1124"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L1125"> },</span>
<span class="line" id="L1126"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> err,</span>
<span class="line" id="L1127"> };</span>
<span class="line" id="L1128"> }</span>
<span class="line" id="L1129"> }</span>
<span class="line" id="L1130"> }</span>
<span class="line" id="L1131"></span>
<span class="line" id="L1132"> <span class="tok-comment">/// Performs an async `os.pread` using a separate thread.</span></span>
<span class="line" id="L1133"> <span class="tok-comment">/// `fd` must block and not return EAGAIN.</span></span>
<span class="line" id="L1134"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">pread</span>(self: *Loop, fd: os.fd_t, buf: []<span class="tok-type">u8</span>, offset: <span class="tok-type">u64</span>, simulate_evented: <span class="tok-type">bool</span>) os.PReadError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L1135"> <span class="tok-kw">if</span> (simulate_evented) {</span>
<span class="line" id="L1136"> <span class="tok-kw">var</span> req_node = Request.Node{</span>
<span class="line" id="L1137"> .data = .{</span>
<span class="line" id="L1138"> .msg = .{</span>
<span class="line" id="L1139"> .pread = .{</span>
<span class="line" id="L1140"> .fd = fd,</span>
<span class="line" id="L1141"> .buf = buf,</span>
<span class="line" id="L1142"> .offset = offset,</span>
<span class="line" id="L1143"> .result = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1144"> },</span>
<span class="line" id="L1145"> },</span>
<span class="line" id="L1146"> .finish = .{ .tick_node = .{ .data = <span class="tok-builtin">@frame</span>() } },</span>
<span class="line" id="L1147"> },</span>
<span class="line" id="L1148"> };</span>
<span class="line" id="L1149"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L1150"> self.posixFsRequest(&req_node);</span>
<span class="line" id="L1151"> }</span>
<span class="line" id="L1152"> <span class="tok-kw">return</span> req_node.data.msg.pread.result;</span>
<span class="line" id="L1153"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1154"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1155"> <span class="tok-kw">return</span> os.pread(fd, buf, offset) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L1156"> <span class="tok-kw">error</span>.WouldBlock => {</span>
<span class="line" id="L1157"> self.waitUntilFdReadable(fd);</span>
<span class="line" id="L1158"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L1159"> },</span>
<span class="line" id="L1160"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> err,</span>
<span class="line" id="L1161"> };</span>
<span class="line" id="L1162"> }</span>
<span class="line" id="L1163"> }</span>
<span class="line" id="L1164"> }</span>
<span class="line" id="L1165"></span>
<span class="line" id="L1166"> <span class="tok-comment">/// Performs an async `os.preadv` using a separate thread.</span></span>
<span class="line" id="L1167"> <span class="tok-comment">/// `fd` must block and not return EAGAIN.</span></span>
<span class="line" id="L1168"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">preadv</span>(self: *Loop, fd: os.fd_t, iov: []<span class="tok-kw">const</span> os.iovec, offset: <span class="tok-type">u64</span>, simulate_evented: <span class="tok-type">bool</span>) os.ReadError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L1169"> <span class="tok-kw">if</span> (simulate_evented) {</span>
<span class="line" id="L1170"> <span class="tok-kw">var</span> req_node = Request.Node{</span>
<span class="line" id="L1171"> .data = .{</span>
<span class="line" id="L1172"> .msg = .{</span>
<span class="line" id="L1173"> .preadv = .{</span>
<span class="line" id="L1174"> .fd = fd,</span>
<span class="line" id="L1175"> .iov = iov,</span>
<span class="line" id="L1176"> .offset = offset,</span>
<span class="line" id="L1177"> .result = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1178"> },</span>
<span class="line" id="L1179"> },</span>
<span class="line" id="L1180"> .finish = .{ .tick_node = .{ .data = <span class="tok-builtin">@frame</span>() } },</span>
<span class="line" id="L1181"> },</span>
<span class="line" id="L1182"> };</span>
<span class="line" id="L1183"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L1184"> self.posixFsRequest(&req_node);</span>
<span class="line" id="L1185"> }</span>
<span class="line" id="L1186"> <span class="tok-kw">return</span> req_node.data.msg.preadv.result;</span>
<span class="line" id="L1187"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1188"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1189"> <span class="tok-kw">return</span> os.preadv(fd, iov, offset) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L1190"> <span class="tok-kw">error</span>.WouldBlock => {</span>
<span class="line" id="L1191"> self.waitUntilFdReadable(fd);</span>
<span class="line" id="L1192"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L1193"> },</span>
<span class="line" id="L1194"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> err,</span>
<span class="line" id="L1195"> };</span>
<span class="line" id="L1196"> }</span>
<span class="line" id="L1197"> }</span>
<span class="line" id="L1198"> }</span>
<span class="line" id="L1199"></span>
<span class="line" id="L1200"> <span class="tok-comment">/// Performs an async `os.write` using a separate thread.</span></span>
<span class="line" id="L1201"> <span class="tok-comment">/// `fd` must block and not return EAGAIN.</span></span>
<span class="line" id="L1202"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">write</span>(self: *Loop, fd: os.fd_t, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, simulate_evented: <span class="tok-type">bool</span>) os.WriteError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L1203"> <span class="tok-kw">if</span> (simulate_evented) {</span>
<span class="line" id="L1204"> <span class="tok-kw">var</span> req_node = Request.Node{</span>
<span class="line" id="L1205"> .data = .{</span>
<span class="line" id="L1206"> .msg = .{</span>
<span class="line" id="L1207"> .write = .{</span>
<span class="line" id="L1208"> .fd = fd,</span>
<span class="line" id="L1209"> .bytes = bytes,</span>
<span class="line" id="L1210"> .result = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1211"> },</span>
<span class="line" id="L1212"> },</span>
<span class="line" id="L1213"> .finish = .{ .tick_node = .{ .data = <span class="tok-builtin">@frame</span>() } },</span>
<span class="line" id="L1214"> },</span>
<span class="line" id="L1215"> };</span>
<span class="line" id="L1216"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L1217"> self.posixFsRequest(&req_node);</span>
<span class="line" id="L1218"> }</span>
<span class="line" id="L1219"> <span class="tok-kw">return</span> req_node.data.msg.write.result;</span>
<span class="line" id="L1220"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1221"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1222"> <span class="tok-kw">return</span> os.write(fd, bytes) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L1223"> <span class="tok-kw">error</span>.WouldBlock => {</span>
<span class="line" id="L1224"> self.waitUntilFdWritable(fd);</span>
<span class="line" id="L1225"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L1226"> },</span>
<span class="line" id="L1227"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> err,</span>
<span class="line" id="L1228"> };</span>
<span class="line" id="L1229"> }</span>
<span class="line" id="L1230"> }</span>
<span class="line" id="L1231"> }</span>
<span class="line" id="L1232"></span>
<span class="line" id="L1233"> <span class="tok-comment">/// Performs an async `os.writev` using a separate thread.</span></span>
<span class="line" id="L1234"> <span class="tok-comment">/// `fd` must block and not return EAGAIN.</span></span>
<span class="line" id="L1235"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">writev</span>(self: *Loop, fd: os.fd_t, iov: []<span class="tok-kw">const</span> os.iovec_const, simulate_evented: <span class="tok-type">bool</span>) os.WriteError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L1236"> <span class="tok-kw">if</span> (simulate_evented) {</span>
<span class="line" id="L1237"> <span class="tok-kw">var</span> req_node = Request.Node{</span>
<span class="line" id="L1238"> .data = .{</span>
<span class="line" id="L1239"> .msg = .{</span>
<span class="line" id="L1240"> .writev = .{</span>
<span class="line" id="L1241"> .fd = fd,</span>
<span class="line" id="L1242"> .iov = iov,</span>
<span class="line" id="L1243"> .result = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1244"> },</span>
<span class="line" id="L1245"> },</span>
<span class="line" id="L1246"> .finish = .{ .tick_node = .{ .data = <span class="tok-builtin">@frame</span>() } },</span>
<span class="line" id="L1247"> },</span>
<span class="line" id="L1248"> };</span>
<span class="line" id="L1249"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L1250"> self.posixFsRequest(&req_node);</span>
<span class="line" id="L1251"> }</span>
<span class="line" id="L1252"> <span class="tok-kw">return</span> req_node.data.msg.writev.result;</span>
<span class="line" id="L1253"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1254"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1255"> <span class="tok-kw">return</span> os.writev(fd, iov) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L1256"> <span class="tok-kw">error</span>.WouldBlock => {</span>
<span class="line" id="L1257"> self.waitUntilFdWritable(fd);</span>
<span class="line" id="L1258"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L1259"> },</span>
<span class="line" id="L1260"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> err,</span>
<span class="line" id="L1261"> };</span>
<span class="line" id="L1262"> }</span>
<span class="line" id="L1263"> }</span>
<span class="line" id="L1264"> }</span>
<span class="line" id="L1265"></span>
<span class="line" id="L1266"> <span class="tok-comment">/// Performs an async `os.pwrite` using a separate thread.</span></span>
<span class="line" id="L1267"> <span class="tok-comment">/// `fd` must block and not return EAGAIN.</span></span>
<span class="line" id="L1268"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">pwrite</span>(self: *Loop, fd: os.fd_t, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, offset: <span class="tok-type">u64</span>, simulate_evented: <span class="tok-type">bool</span>) os.PerformsWriteError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L1269"> <span class="tok-kw">if</span> (simulate_evented) {</span>
<span class="line" id="L1270"> <span class="tok-kw">var</span> req_node = Request.Node{</span>
<span class="line" id="L1271"> .data = .{</span>
<span class="line" id="L1272"> .msg = .{</span>
<span class="line" id="L1273"> .pwrite = .{</span>
<span class="line" id="L1274"> .fd = fd,</span>
<span class="line" id="L1275"> .bytes = bytes,</span>
<span class="line" id="L1276"> .offset = offset,</span>
<span class="line" id="L1277"> .result = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1278"> },</span>
<span class="line" id="L1279"> },</span>
<span class="line" id="L1280"> .finish = .{ .tick_node = .{ .data = <span class="tok-builtin">@frame</span>() } },</span>
<span class="line" id="L1281"> },</span>
<span class="line" id="L1282"> };</span>
<span class="line" id="L1283"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L1284"> self.posixFsRequest(&req_node);</span>
<span class="line" id="L1285"> }</span>
<span class="line" id="L1286"> <span class="tok-kw">return</span> req_node.data.msg.pwrite.result;</span>
<span class="line" id="L1287"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1288"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1289"> <span class="tok-kw">return</span> os.pwrite(fd, bytes, offset) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L1290"> <span class="tok-kw">error</span>.WouldBlock => {</span>
<span class="line" id="L1291"> self.waitUntilFdWritable(fd);</span>
<span class="line" id="L1292"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L1293"> },</span>
<span class="line" id="L1294"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> err,</span>
<span class="line" id="L1295"> };</span>
<span class="line" id="L1296"> }</span>
<span class="line" id="L1297"> }</span>
<span class="line" id="L1298"> }</span>
<span class="line" id="L1299"></span>
<span class="line" id="L1300"> <span class="tok-comment">/// Performs an async `os.pwritev` using a separate thread.</span></span>
<span class="line" id="L1301"> <span class="tok-comment">/// `fd` must block and not return EAGAIN.</span></span>
<span class="line" id="L1302"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">pwritev</span>(self: *Loop, fd: os.fd_t, iov: []<span class="tok-kw">const</span> os.iovec_const, offset: <span class="tok-type">u64</span>, simulate_evented: <span class="tok-type">bool</span>) os.PWriteError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L1303"> <span class="tok-kw">if</span> (simulate_evented) {</span>
<span class="line" id="L1304"> <span class="tok-kw">var</span> req_node = Request.Node{</span>
<span class="line" id="L1305"> .data = .{</span>
<span class="line" id="L1306"> .msg = .{</span>
<span class="line" id="L1307"> .pwritev = .{</span>
<span class="line" id="L1308"> .fd = fd,</span>
<span class="line" id="L1309"> .iov = iov,</span>
<span class="line" id="L1310"> .offset = offset,</span>
<span class="line" id="L1311"> .result = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1312"> },</span>
<span class="line" id="L1313"> },</span>
<span class="line" id="L1314"> .finish = .{ .tick_node = .{ .data = <span class="tok-builtin">@frame</span>() } },</span>
<span class="line" id="L1315"> },</span>
<span class="line" id="L1316"> };</span>
<span class="line" id="L1317"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L1318"> self.posixFsRequest(&req_node);</span>
<span class="line" id="L1319"> }</span>
<span class="line" id="L1320"> <span class="tok-kw">return</span> req_node.data.msg.pwritev.result;</span>
<span class="line" id="L1321"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1322"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1323"> <span class="tok-kw">return</span> os.pwritev(fd, iov, offset) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L1324"> <span class="tok-kw">error</span>.WouldBlock => {</span>
<span class="line" id="L1325"> self.waitUntilFdWritable(fd);</span>
<span class="line" id="L1326"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L1327"> },</span>
<span class="line" id="L1328"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> err,</span>
<span class="line" id="L1329"> };</span>
<span class="line" id="L1330"> }</span>
<span class="line" id="L1331"> }</span>
<span class="line" id="L1332"> }</span>
<span class="line" id="L1333"></span>
<span class="line" id="L1334"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">sendto</span>(</span>
<span class="line" id="L1335"> self: *Loop,</span>
<span class="line" id="L1336"> <span class="tok-comment">/// The file descriptor of the sending socket.</span></span>
<span class="line" id="L1337"> sockfd: os.fd_t,</span>
<span class="line" id="L1338"> <span class="tok-comment">/// Message to send.</span></span>
<span class="line" id="L1339"> buf: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L1340"> flags: <span class="tok-type">u32</span>,</span>
<span class="line" id="L1341"> dest_addr: ?*<span class="tok-kw">const</span> os.sockaddr,</span>
<span class="line" id="L1342"> addrlen: os.socklen_t,</span>
<span class="line" id="L1343"> ) os.SendToError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L1344"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1345"> <span class="tok-kw">return</span> os.sendto(sockfd, buf, flags, dest_addr, addrlen) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L1346"> <span class="tok-kw">error</span>.WouldBlock => {</span>
<span class="line" id="L1347"> self.waitUntilFdWritable(sockfd);</span>
<span class="line" id="L1348"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L1349"> },</span>
<span class="line" id="L1350"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> err,</span>
<span class="line" id="L1351"> };</span>
<span class="line" id="L1352"> }</span>
<span class="line" id="L1353"> }</span>
<span class="line" id="L1354"></span>
<span class="line" id="L1355"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">recvfrom</span>(</span>
<span class="line" id="L1356"> self: *Loop,</span>
<span class="line" id="L1357"> sockfd: os.fd_t,</span>
<span class="line" id="L1358"> buf: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L1359"> flags: <span class="tok-type">u32</span>,</span>
<span class="line" id="L1360"> src_addr: ?*os.sockaddr,</span>
<span class="line" id="L1361"> addrlen: ?*os.socklen_t,</span>
<span class="line" id="L1362"> ) os.RecvFromError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L1363"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1364"> <span class="tok-kw">return</span> os.recvfrom(sockfd, buf, flags, src_addr, addrlen) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L1365"> <span class="tok-kw">error</span>.WouldBlock => {</span>
<span class="line" id="L1366"> self.waitUntilFdReadable(sockfd);</span>
<span class="line" id="L1367"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L1368"> },</span>
<span class="line" id="L1369"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> err,</span>
<span class="line" id="L1370"> };</span>
<span class="line" id="L1371"> }</span>
<span class="line" id="L1372"> }</span>
<span class="line" id="L1373"></span>
<span class="line" id="L1374"> <span class="tok-comment">/// Performs an async `os.faccessatZ` using a separate thread.</span></span>
<span class="line" id="L1375"> <span class="tok-comment">/// `fd` must block and not return EAGAIN.</span></span>
<span class="line" id="L1376"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">faccessatZ</span>(</span>
<span class="line" id="L1377"> self: *Loop,</span>
<span class="line" id="L1378"> dirfd: os.fd_t,</span>
<span class="line" id="L1379"> path_z: [*:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L1380"> mode: <span class="tok-type">u32</span>,</span>
<span class="line" id="L1381"> flags: <span class="tok-type">u32</span>,</span>
<span class="line" id="L1382"> ) os.AccessError!<span class="tok-type">void</span> {</span>
<span class="line" id="L1383"> <span class="tok-kw">var</span> req_node = Request.Node{</span>
<span class="line" id="L1384"> .data = .{</span>
<span class="line" id="L1385"> .msg = .{</span>
<span class="line" id="L1386"> .faccessat = .{</span>
<span class="line" id="L1387"> .dirfd = dirfd,</span>
<span class="line" id="L1388"> .path = path_z,</span>
<span class="line" id="L1389"> .mode = mode,</span>
<span class="line" id="L1390"> .flags = flags,</span>
<span class="line" id="L1391"> .result = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1392"> },</span>
<span class="line" id="L1393"> },</span>
<span class="line" id="L1394"> .finish = .{ .tick_node = .{ .data = <span class="tok-builtin">@frame</span>() } },</span>
<span class="line" id="L1395"> },</span>
<span class="line" id="L1396"> };</span>
<span class="line" id="L1397"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L1398"> self.posixFsRequest(&req_node);</span>
<span class="line" id="L1399"> }</span>
<span class="line" id="L1400"> <span class="tok-kw">return</span> req_node.data.msg.faccessat.result;</span>
<span class="line" id="L1401"> }</span>
<span class="line" id="L1402"></span>
<span class="line" id="L1403"> <span class="tok-kw">fn</span> <span class="tok-fn">workerRun</span>(self: *Loop) <span class="tok-type">void</span> {</span>
<span class="line" id="L1404"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1405"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1406"> <span class="tok-kw">const</span> next_tick_node = self.next_tick_queue.get() <span class="tok-kw">orelse</span> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1407"> self.dispatch();</span>
<span class="line" id="L1408"> <span class="tok-kw">resume</span> next_tick_node.data;</span>
<span class="line" id="L1409"> self.finishOneEvent();</span>
<span class="line" id="L1410"> }</span>
<span class="line" id="L1411"></span>
<span class="line" id="L1412"> <span class="tok-kw">switch</span> (builtin.os.tag) {</span>
<span class="line" id="L1413"> .linux => {</span>
<span class="line" id="L1414"> <span class="tok-comment">// only process 1 event so we don't steal from other threads</span>
</span>
<span class="line" id="L1415"> <span class="tok-kw">var</span> events: [<span class="tok-number">1</span>]os.linux.epoll_event = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L1416"> <span class="tok-kw">const</span> count = os.epoll_wait(self.os_data.epollfd, events[<span class="tok-number">0</span>..], -<span class="tok-number">1</span>);</span>
<span class="line" id="L1417"> <span class="tok-kw">for</span> (events[<span class="tok-number">0</span>..count]) |ev| {</span>
<span class="line" id="L1418"> <span class="tok-kw">const</span> resume_node = <span class="tok-builtin">@as</span>(*ResumeNode, <span class="tok-builtin">@ptrFromInt</span>(ev.data.ptr));</span>
<span class="line" id="L1419"> <span class="tok-kw">const</span> handle = resume_node.handle;</span>
<span class="line" id="L1420"> <span class="tok-kw">const</span> resume_node_id = resume_node.id;</span>
<span class="line" id="L1421"> <span class="tok-kw">switch</span> (resume_node_id) {</span>
<span class="line" id="L1422"> .basic => {},</span>
<span class="line" id="L1423"> .stop => <span class="tok-kw">return</span>,</span>
<span class="line" id="L1424"> .event_fd => {</span>
<span class="line" id="L1425"> <span class="tok-kw">const</span> event_fd_node = <span class="tok-builtin">@fieldParentPtr</span>(ResumeNode.EventFd, <span class="tok-str">"base"</span>, resume_node);</span>
<span class="line" id="L1426"> event_fd_node.epoll_op = os.linux.EPOLL.CTL_MOD;</span>
<span class="line" id="L1427"> <span class="tok-kw">const</span> stack_node = <span class="tok-builtin">@fieldParentPtr</span>(std.atomic.Stack(ResumeNode.EventFd).Node, <span class="tok-str">"data"</span>, event_fd_node);</span>
<span class="line" id="L1428"> self.available_eventfd_resume_nodes.push(stack_node);</span>
<span class="line" id="L1429"> },</span>
<span class="line" id="L1430"> }</span>
<span class="line" id="L1431"> <span class="tok-kw">resume</span> handle;</span>
<span class="line" id="L1432"> <span class="tok-kw">if</span> (resume_node_id == .event_fd) {</span>
<span class="line" id="L1433"> self.finishOneEvent();</span>
<span class="line" id="L1434"> }</span>
<span class="line" id="L1435"> }</span>
<span class="line" id="L1436"> },</span>
<span class="line" id="L1437"> .macos, .ios, .tvos, .watchos, .freebsd, .netbsd, .dragonfly, .openbsd => {</span>
<span class="line" id="L1438"> <span class="tok-kw">var</span> eventlist: [<span class="tok-number">1</span>]os.Kevent = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L1439"> <span class="tok-kw">const</span> empty_kevs = &[<span class="tok-number">0</span>]os.Kevent{};</span>
<span class="line" id="L1440"> <span class="tok-kw">const</span> count = os.kevent(self.os_data.kqfd, empty_kevs, eventlist[<span class="tok-number">0</span>..], <span class="tok-null">null</span>) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L1441"> <span class="tok-kw">for</span> (eventlist[<span class="tok-number">0</span>..count]) |ev| {</span>
<span class="line" id="L1442"> <span class="tok-kw">const</span> resume_node = <span class="tok-builtin">@as</span>(*ResumeNode, <span class="tok-builtin">@ptrFromInt</span>(ev.udata));</span>
<span class="line" id="L1443"> <span class="tok-kw">const</span> handle = resume_node.handle;</span>
<span class="line" id="L1444"> <span class="tok-kw">const</span> resume_node_id = resume_node.id;</span>
<span class="line" id="L1445"> <span class="tok-kw">switch</span> (resume_node_id) {</span>
<span class="line" id="L1446"> .basic => {</span>
<span class="line" id="L1447"> <span class="tok-kw">const</span> basic_node = <span class="tok-builtin">@fieldParentPtr</span>(ResumeNode.Basic, <span class="tok-str">"base"</span>, resume_node);</span>
<span class="line" id="L1448"> basic_node.kev = ev;</span>
<span class="line" id="L1449"> },</span>
<span class="line" id="L1450"> .stop => <span class="tok-kw">return</span>,</span>
<span class="line" id="L1451"> .event_fd => {</span>
<span class="line" id="L1452"> <span class="tok-kw">const</span> event_fd_node = <span class="tok-builtin">@fieldParentPtr</span>(ResumeNode.EventFd, <span class="tok-str">"base"</span>, resume_node);</span>
<span class="line" id="L1453"> <span class="tok-kw">const</span> stack_node = <span class="tok-builtin">@fieldParentPtr</span>(std.atomic.Stack(ResumeNode.EventFd).Node, <span class="tok-str">"data"</span>, event_fd_node);</span>
<span class="line" id="L1454"> self.available_eventfd_resume_nodes.push(stack_node);</span>
<span class="line" id="L1455"> },</span>
<span class="line" id="L1456"> }</span>
<span class="line" id="L1457"> <span class="tok-kw">resume</span> handle;</span>
<span class="line" id="L1458"> <span class="tok-kw">if</span> (resume_node_id == .event_fd) {</span>
<span class="line" id="L1459"> self.finishOneEvent();</span>
<span class="line" id="L1460"> }</span>
<span class="line" id="L1461"> }</span>
<span class="line" id="L1462"> },</span>
<span class="line" id="L1463"> .windows => {</span>
<span class="line" id="L1464"> <span class="tok-kw">var</span> completion_key: <span class="tok-type">usize</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L1465"> <span class="tok-kw">const</span> overlapped = <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1466"> <span class="tok-kw">var</span> nbytes: windows.DWORD = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L1467"> <span class="tok-kw">var</span> overlapped: ?*windows.OVERLAPPED = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L1468"> <span class="tok-kw">switch</span> (windows.GetQueuedCompletionStatus(self.os_data.io_port, &nbytes, &completion_key, &overlapped, windows.INFINITE)) {</span>
<span class="line" id="L1469"> .Aborted => <span class="tok-kw">return</span>,</span>
<span class="line" id="L1470"> .Normal => {},</span>
<span class="line" id="L1471"> .EOF => {},</span>
<span class="line" id="L1472"> .Cancelled => <span class="tok-kw">continue</span>,</span>
<span class="line" id="L1473"> }</span>
<span class="line" id="L1474"> <span class="tok-kw">if</span> (overlapped) |o| <span class="tok-kw">break</span> o;</span>
<span class="line" id="L1475"> };</span>
<span class="line" id="L1476"> <span class="tok-kw">const</span> resume_node = <span class="tok-builtin">@fieldParentPtr</span>(ResumeNode, <span class="tok-str">"overlapped"</span>, overlapped);</span>
<span class="line" id="L1477"> <span class="tok-kw">const</span> handle = resume_node.handle;</span>
<span class="line" id="L1478"> <span class="tok-kw">const</span> resume_node_id = resume_node.id;</span>
<span class="line" id="L1479"> <span class="tok-kw">switch</span> (resume_node_id) {</span>
<span class="line" id="L1480"> .basic => {},</span>
<span class="line" id="L1481"> .stop => <span class="tok-kw">return</span>,</span>
<span class="line" id="L1482"> .event_fd => {</span>
<span class="line" id="L1483"> <span class="tok-kw">const</span> event_fd_node = <span class="tok-builtin">@fieldParentPtr</span>(ResumeNode.EventFd, <span class="tok-str">"base"</span>, resume_node);</span>
<span class="line" id="L1484"> <span class="tok-kw">const</span> stack_node = <span class="tok-builtin">@fieldParentPtr</span>(std.atomic.Stack(ResumeNode.EventFd).Node, <span class="tok-str">"data"</span>, event_fd_node);</span>
<span class="line" id="L1485"> self.available_eventfd_resume_nodes.push(stack_node);</span>
<span class="line" id="L1486"> },</span>
<span class="line" id="L1487"> }</span>
<span class="line" id="L1488"> <span class="tok-kw">resume</span> handle;</span>
<span class="line" id="L1489"> self.finishOneEvent();</span>
<span class="line" id="L1490"> },</span>
<span class="line" id="L1491"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"unsupported OS"</span>),</span>
<span class="line" id="L1492"> }</span>
<span class="line" id="L1493"> }</span>
<span class="line" id="L1494"> }</span>
<span class="line" id="L1495"></span>
<span class="line" id="L1496"> <span class="tok-kw">fn</span> <span class="tok-fn">posixFsRequest</span>(self: *Loop, request_node: *Request.Node) <span class="tok-type">void</span> {</span>
<span class="line" id="L1497"> self.beginOneEvent(); <span class="tok-comment">// finished in posixFsRun after processing the msg</span>
</span>
<span class="line" id="L1498"> self.fs_queue.put(request_node);</span>
<span class="line" id="L1499"> self.fs_thread_wakeup.set();</span>
<span class="line" id="L1500"> }</span>
<span class="line" id="L1501"></span>
<span class="line" id="L1502"> <span class="tok-kw">fn</span> <span class="tok-fn">posixFsCancel</span>(self: *Loop, request_node: *Request.Node) <span class="tok-type">void</span> {</span>
<span class="line" id="L1503"> <span class="tok-kw">if</span> (self.fs_queue.remove(request_node)) {</span>
<span class="line" id="L1504"> self.finishOneEvent();</span>
<span class="line" id="L1505"> }</span>
<span class="line" id="L1506"> }</span>
<span class="line" id="L1507"></span>
<span class="line" id="L1508"> <span class="tok-kw">fn</span> <span class="tok-fn">posixFsRun</span>(self: *Loop) <span class="tok-type">void</span> {</span>
<span class="line" id="L1509"> <span class="tok-kw">nosuspend</span> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1510"> self.fs_thread_wakeup.reset();</span>
<span class="line" id="L1511"> <span class="tok-kw">while</span> (self.fs_queue.get()) |node| {</span>
<span class="line" id="L1512"> <span class="tok-kw">switch</span> (node.data.msg) {</span>
<span class="line" id="L1513"> .end => <span class="tok-kw">return</span>,</span>
<span class="line" id="L1514"> .read => |*msg| {</span>
<span class="line" id="L1515"> msg.result = os.read(msg.fd, msg.buf);</span>
<span class="line" id="L1516"> },</span>
<span class="line" id="L1517"> .readv => |*msg| {</span>
<span class="line" id="L1518"> msg.result = os.readv(msg.fd, msg.iov);</span>
<span class="line" id="L1519"> },</span>
<span class="line" id="L1520"> .write => |*msg| {</span>
<span class="line" id="L1521"> msg.result = os.write(msg.fd, msg.bytes);</span>
<span class="line" id="L1522"> },</span>
<span class="line" id="L1523"> .writev => |*msg| {</span>
<span class="line" id="L1524"> msg.result = os.writev(msg.fd, msg.iov);</span>
<span class="line" id="L1525"> },</span>
<span class="line" id="L1526"> .pwrite => |*msg| {</span>
<span class="line" id="L1527"> msg.result = os.pwrite(msg.fd, msg.bytes, msg.offset);</span>
<span class="line" id="L1528"> },</span>
<span class="line" id="L1529"> .pwritev => |*msg| {</span>
<span class="line" id="L1530"> msg.result = os.pwritev(msg.fd, msg.iov, msg.offset);</span>
<span class="line" id="L1531"> },</span>
<span class="line" id="L1532"> .pread => |*msg| {</span>
<span class="line" id="L1533"> msg.result = os.pread(msg.fd, msg.buf, msg.offset);</span>
<span class="line" id="L1534"> },</span>
<span class="line" id="L1535"> .preadv => |*msg| {</span>
<span class="line" id="L1536"> msg.result = os.preadv(msg.fd, msg.iov, msg.offset);</span>
<span class="line" id="L1537"> },</span>
<span class="line" id="L1538"> .open => |*msg| {</span>
<span class="line" id="L1539"> <span class="tok-kw">if</span> (is_windows) <span class="tok-kw">unreachable</span>; <span class="tok-comment">// TODO</span>
</span>
<span class="line" id="L1540"> msg.result = os.openZ(msg.path, msg.flags, msg.mode);</span>
<span class="line" id="L1541"> },</span>
<span class="line" id="L1542"> .openat => |*msg| {</span>
<span class="line" id="L1543"> <span class="tok-kw">if</span> (is_windows) <span class="tok-kw">unreachable</span>; <span class="tok-comment">// TODO</span>
</span>
<span class="line" id="L1544"> msg.result = os.openatZ(msg.fd, msg.path, msg.flags, msg.mode);</span>
<span class="line" id="L1545"> },</span>
<span class="line" id="L1546"> .faccessat => |*msg| {</span>
<span class="line" id="L1547"> msg.result = os.faccessatZ(msg.dirfd, msg.path, msg.mode, msg.flags);</span>
<span class="line" id="L1548"> },</span>
<span class="line" id="L1549"> .close => |*msg| os.close(msg.fd),</span>
<span class="line" id="L1550"> }</span>
<span class="line" id="L1551"> <span class="tok-kw">switch</span> (node.data.finish) {</span>
<span class="line" id="L1552"> .tick_node => |*tick_node| self.onNextTick(tick_node),</span>
<span class="line" id="L1553"> .no_action => {},</span>
<span class="line" id="L1554"> }</span>
<span class="line" id="L1555"> self.finishOneEvent();</span>
<span class="line" id="L1556"> }</span>
<span class="line" id="L1557"> self.fs_thread_wakeup.wait();</span>
<span class="line" id="L1558"> };</span>
<span class="line" id="L1559"> }</span>
<span class="line" id="L1560"></span>
<span class="line" id="L1561"> <span class="tok-kw">const</span> OsData = <span class="tok-kw">switch</span> (builtin.os.tag) {</span>
<span class="line" id="L1562"> .linux => LinuxOsData,</span>
<span class="line" id="L1563"> .macos, .ios, .tvos, .watchos, .freebsd, .netbsd, .dragonfly, .openbsd => KEventData,</span>
<span class="line" id="L1564"> .windows => <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1565"> io_port: windows.HANDLE,</span>
<span class="line" id="L1566"> extra_thread_count: <span class="tok-type">usize</span>,</span>
<span class="line" id="L1567"> },</span>
<span class="line" id="L1568"> <span class="tok-kw">else</span> => <span class="tok-kw">struct</span> {},</span>
<span class="line" id="L1569"> };</span>
<span class="line" id="L1570"></span>
<span class="line" id="L1571"> <span class="tok-kw">const</span> KEventData = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1572"> kqfd: <span class="tok-type">i32</span>,</span>
<span class="line" id="L1573"> final_kevent: os.Kevent,</span>
<span class="line" id="L1574"> };</span>
<span class="line" id="L1575"></span>
<span class="line" id="L1576"> <span class="tok-kw">const</span> LinuxOsData = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1577"> epollfd: <span class="tok-type">i32</span>,</span>
<span class="line" id="L1578"> final_eventfd: <span class="tok-type">i32</span>,</span>
<span class="line" id="L1579"> final_eventfd_event: os.linux.epoll_event,</span>
<span class="line" id="L1580"> };</span>
<span class="line" id="L1581"></span>
<span class="line" id="L1582"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Request = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1583"> msg: Msg,</span>
<span class="line" id="L1584"> finish: Finish,</span>
<span class="line" id="L1585"></span>
<span class="line" id="L1586"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Node = std.atomic.Queue(Request).Node;</span>
<span class="line" id="L1587"></span>
<span class="line" id="L1588"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Finish = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L1589"> tick_node: Loop.NextTickNode,</span>
<span class="line" id="L1590"> no_action,</span>
<span class="line" id="L1591"> };</span>
<span class="line" id="L1592"></span>
<span class="line" id="L1593"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Msg = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L1594"> read: Read,</span>
<span class="line" id="L1595"> readv: ReadV,</span>
<span class="line" id="L1596"> write: Write,</span>
<span class="line" id="L1597"> writev: WriteV,</span>
<span class="line" id="L1598"> pwrite: PWrite,</span>
<span class="line" id="L1599"> pwritev: PWriteV,</span>
<span class="line" id="L1600"> pread: PRead,</span>
<span class="line" id="L1601"> preadv: PReadV,</span>
<span class="line" id="L1602"> open: Open,</span>
<span class="line" id="L1603"> openat: OpenAt,</span>
<span class="line" id="L1604"> close: Close,</span>
<span class="line" id="L1605"> faccessat: FAccessAt,</span>
<span class="line" id="L1606"></span>
<span class="line" id="L1607"> <span class="tok-comment">/// special - means the fs thread should exit</span></span>
<span class="line" id="L1608"> end,</span>
<span class="line" id="L1609"></span>
<span class="line" id="L1610"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Read = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1611"> fd: os.fd_t,</span>
<span class="line" id="L1612"> buf: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L1613"> result: Error!<span class="tok-type">usize</span>,</span>
<span class="line" id="L1614"></span>
<span class="line" id="L1615"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = os.ReadError;</span>
<span class="line" id="L1616"> };</span>
<span class="line" id="L1617"></span>
<span class="line" id="L1618"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ReadV = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1619"> fd: os.fd_t,</span>
<span class="line" id="L1620"> iov: []<span class="tok-kw">const</span> os.iovec,</span>
<span class="line" id="L1621"> result: Error!<span class="tok-type">usize</span>,</span>
<span class="line" id="L1622"></span>
<span class="line" id="L1623"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = os.ReadError;</span>
<span class="line" id="L1624"> };</span>
<span class="line" id="L1625"></span>
<span class="line" id="L1626"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Write = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1627"> fd: os.fd_t,</span>
<span class="line" id="L1628"> bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L1629"> result: Error!<span class="tok-type">usize</span>,</span>
<span class="line" id="L1630"></span>
<span class="line" id="L1631"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = os.WriteError;</span>
<span class="line" id="L1632"> };</span>
<span class="line" id="L1633"></span>
<span class="line" id="L1634"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> WriteV = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1635"> fd: os.fd_t,</span>
<span class="line" id="L1636"> iov: []<span class="tok-kw">const</span> os.iovec_const,</span>
<span class="line" id="L1637"> result: Error!<span class="tok-type">usize</span>,</span>
<span class="line" id="L1638"></span>
<span class="line" id="L1639"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = os.WriteError;</span>
<span class="line" id="L1640"> };</span>
<span class="line" id="L1641"></span>
<span class="line" id="L1642"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> PWrite = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1643"> fd: os.fd_t,</span>
<span class="line" id="L1644"> bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L1645"> offset: <span class="tok-type">usize</span>,</span>
<span class="line" id="L1646"> result: Error!<span class="tok-type">usize</span>,</span>
<span class="line" id="L1647"></span>
<span class="line" id="L1648"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = os.PWriteError;</span>
<span class="line" id="L1649"> };</span>
<span class="line" id="L1650"></span>
<span class="line" id="L1651"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> PWriteV = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1652"> fd: os.fd_t,</span>
<span class="line" id="L1653"> iov: []<span class="tok-kw">const</span> os.iovec_const,</span>
<span class="line" id="L1654"> offset: <span class="tok-type">usize</span>,</span>
<span class="line" id="L1655"> result: Error!<span class="tok-type">usize</span>,</span>
<span class="line" id="L1656"></span>
<span class="line" id="L1657"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = os.PWriteError;</span>
<span class="line" id="L1658"> };</span>
<span class="line" id="L1659"></span>
<span class="line" id="L1660"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> PRead = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1661"> fd: os.fd_t,</span>
<span class="line" id="L1662"> buf: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L1663"> offset: <span class="tok-type">usize</span>,</span>
<span class="line" id="L1664"> result: Error!<span class="tok-type">usize</span>,</span>
<span class="line" id="L1665"></span>
<span class="line" id="L1666"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = os.PReadError;</span>
<span class="line" id="L1667"> };</span>
<span class="line" id="L1668"></span>
<span class="line" id="L1669"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> PReadV = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1670"> fd: os.fd_t,</span>
<span class="line" id="L1671"> iov: []<span class="tok-kw">const</span> os.iovec,</span>
<span class="line" id="L1672"> offset: <span class="tok-type">usize</span>,</span>
<span class="line" id="L1673"> result: Error!<span class="tok-type">usize</span>,</span>
<span class="line" id="L1674"></span>
<span class="line" id="L1675"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = os.PReadError;</span>
<span class="line" id="L1676"> };</span>
<span class="line" id="L1677"></span>
<span class="line" id="L1678"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Open = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1679"> path: [*:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L1680"> flags: <span class="tok-type">u32</span>,</span>
<span class="line" id="L1681"> mode: os.mode_t,</span>
<span class="line" id="L1682"> result: Error!os.fd_t,</span>
<span class="line" id="L1683"></span>
<span class="line" id="L1684"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = os.OpenError;</span>
<span class="line" id="L1685"> };</span>
<span class="line" id="L1686"></span>
<span class="line" id="L1687"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> OpenAt = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1688"> fd: os.fd_t,</span>
<span class="line" id="L1689"> path: [*:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L1690"> flags: <span class="tok-type">u32</span>,</span>
<span class="line" id="L1691"> mode: os.mode_t,</span>
<span class="line" id="L1692"> result: Error!os.fd_t,</span>
<span class="line" id="L1693"></span>
<span class="line" id="L1694"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = os.OpenError;</span>
<span class="line" id="L1695"> };</span>
<span class="line" id="L1696"></span>
<span class="line" id="L1697"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Close = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1698"> fd: os.fd_t,</span>
<span class="line" id="L1699"> };</span>
<span class="line" id="L1700"></span>
<span class="line" id="L1701"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> FAccessAt = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1702"> dirfd: os.fd_t,</span>
<span class="line" id="L1703"> path: [*:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L1704"> mode: <span class="tok-type">u32</span>,</span>
<span class="line" id="L1705"> flags: <span class="tok-type">u32</span>,</span>
<span class="line" id="L1706"> result: Error!<span class="tok-type">void</span>,</span>
<span class="line" id="L1707"></span>
<span class="line" id="L1708"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = os.AccessError;</span>
<span class="line" id="L1709"> };</span>
<span class="line" id="L1710"> };</span>
<span class="line" id="L1711"> };</span>
<span class="line" id="L1712">};</span>
<span class="line" id="L1713"></span>
<span class="line" id="L1714"><span class="tok-kw">test</span> <span class="tok-str">"std.event.Loop - basic"</span> {</span>
<span class="line" id="L1715"> <span class="tok-comment">// https://github.com/ziglang/zig/issues/1908</span>
</span>
<span class="line" id="L1716"> <span class="tok-kw">if</span> (builtin.single_threaded) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L1717"></span>
<span class="line" id="L1718"> <span class="tok-kw">if</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1719"> <span class="tok-comment">// https://github.com/ziglang/zig/issues/4922</span>
</span>
<span class="line" id="L1720"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L1721"> }</span>
<span class="line" id="L1722"></span>
<span class="line" id="L1723"> <span class="tok-kw">var</span> loop: Loop = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L1724"> <span class="tok-kw">try</span> loop.initMultiThreaded();</span>
<span class="line" id="L1725"> <span class="tok-kw">defer</span> loop.deinit();</span>
<span class="line" id="L1726"></span>
<span class="line" id="L1727"> loop.run();</span>
<span class="line" id="L1728">}</span>
<span class="line" id="L1729"></span>
<span class="line" id="L1730"><span class="tok-kw">fn</span> <span class="tok-fn">testEventLoop</span>() <span class="tok-type">i32</span> {</span>
<span class="line" id="L1731"> <span class="tok-kw">return</span> <span class="tok-number">1234</span>;</span>
<span class="line" id="L1732">}</span>
<span class="line" id="L1733"></span>
<span class="line" id="L1734"><span class="tok-kw">fn</span> <span class="tok-fn">testEventLoop2</span>(h: <span class="tok-kw">anyframe</span>-><span class="tok-type">i32</span>, did_it: *<span class="tok-type">bool</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L1735"> <span class="tok-kw">const</span> value = <span class="tok-kw">await</span> h;</span>
<span class="line" id="L1736"> <span class="tok-kw">try</span> testing.expect(value == <span class="tok-number">1234</span>);</span>
<span class="line" id="L1737"> did_it.* = <span class="tok-null">true</span>;</span>
<span class="line" id="L1738">}</span>
<span class="line" id="L1739"></span>
<span class="line" id="L1740"><span class="tok-kw">var</span> testRunDetachedData: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L1741"><span class="tok-kw">test</span> <span class="tok-str">"std.event.Loop - runDetached"</span> {</span>
<span class="line" id="L1742"> <span class="tok-comment">// https://github.com/ziglang/zig/issues/1908</span>
</span>
<span class="line" id="L1743"> <span class="tok-kw">if</span> (builtin.single_threaded) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L1744"> <span class="tok-kw">if</span> (!std.io.is_async) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L1745"> <span class="tok-kw">if</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1746"> <span class="tok-comment">// https://github.com/ziglang/zig/issues/4922</span>
</span>
<span class="line" id="L1747"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L1748"> }</span>
<span class="line" id="L1749"></span>
<span class="line" id="L1750"> <span class="tok-kw">var</span> loop: Loop = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L1751"> <span class="tok-kw">try</span> loop.initMultiThreaded();</span>
<span class="line" id="L1752"> <span class="tok-kw">defer</span> loop.deinit();</span>
<span class="line" id="L1753"></span>
<span class="line" id="L1754"> <span class="tok-comment">// Schedule the execution, won't actually start until we start the</span>
</span>
<span class="line" id="L1755"> <span class="tok-comment">// event loop.</span>
</span>
<span class="line" id="L1756"> <span class="tok-kw">try</span> loop.runDetached(std.testing.allocator, testRunDetached, .{});</span>
<span class="line" id="L1757"></span>
<span class="line" id="L1758"> <span class="tok-comment">// Now we can start the event loop. The function will return only</span>
</span>
<span class="line" id="L1759"> <span class="tok-comment">// after all tasks have been completed, allowing us to synchronize</span>
</span>
<span class="line" id="L1760"> <span class="tok-comment">// with the previous runDetached.</span>
</span>
<span class="line" id="L1761"> loop.run();</span>
<span class="line" id="L1762"></span>
<span class="line" id="L1763"> <span class="tok-kw">try</span> testing.expect(testRunDetachedData == <span class="tok-number">1</span>);</span>
<span class="line" id="L1764">}</span>
<span class="line" id="L1765"></span>
<span class="line" id="L1766"><span class="tok-kw">fn</span> <span class="tok-fn">testRunDetached</span>() <span class="tok-type">void</span> {</span>
<span class="line" id="L1767"> testRunDetachedData += <span class="tok-number">1</span>;</span>
<span class="line" id="L1768">}</span>
<span class="line" id="L1769"></span>
<span class="line" id="L1770"><span class="tok-kw">test</span> <span class="tok-str">"std.event.Loop - sleep"</span> {</span>
<span class="line" id="L1771"> <span class="tok-comment">// https://github.com/ziglang/zig/issues/1908</span>
</span>
<span class="line" id="L1772"> <span class="tok-kw">if</span> (builtin.single_threaded) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L1773"> <span class="tok-kw">if</span> (!std.io.is_async) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L1774"></span>
<span class="line" id="L1775"> <span class="tok-kw">const</span> frames = <span class="tok-kw">try</span> testing.allocator.alloc(<span class="tok-builtin">@Frame</span>(testSleep), <span class="tok-number">10</span>);</span>
<span class="line" id="L1776"> <span class="tok-kw">defer</span> testing.allocator.free(frames);</span>
<span class="line" id="L1777"></span>
<span class="line" id="L1778"> <span class="tok-kw">const</span> wait_time = <span class="tok-number">100</span> * std.time.ns_per_ms;</span>
<span class="line" id="L1779"> <span class="tok-kw">var</span> sleep_count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L1780"></span>
<span class="line" id="L1781"> <span class="tok-kw">for</span> (frames) |*frame|</span>
<span class="line" id="L1782"> frame.* = <span class="tok-kw">async</span> testSleep(wait_time, &sleep_count);</span>
<span class="line" id="L1783"> <span class="tok-kw">for</span> (frames) |*frame|</span>
<span class="line" id="L1784"> <span class="tok-kw">await</span> frame;</span>
<span class="line" id="L1785"></span>
<span class="line" id="L1786"> <span class="tok-kw">try</span> testing.expect(sleep_count == frames.len);</span>
<span class="line" id="L1787">}</span>
<span class="line" id="L1788"></span>
<span class="line" id="L1789"><span class="tok-kw">fn</span> <span class="tok-fn">testSleep</span>(wait_ns: <span class="tok-type">u64</span>, sleep_count: *<span class="tok-type">usize</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L1790"> Loop.instance.?.sleep(wait_ns);</span>
<span class="line" id="L1791"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, sleep_count, .Add, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L1792">}</span>
<span class="line" id="L1793"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> RwLock = std.event.RwLock;</span>
<span class="line" id="L3"></span>
<span class="line" id="L4"><span class="tok-comment">/// Thread-safe async/await RW lock that protects one piece of data.</span></span>
<span class="line" id="L5"><span class="tok-comment">/// Functions which are waiting for the lock are suspended, and</span></span>
<span class="line" id="L6"><span class="tok-comment">/// are resumed when the lock is released, in order.</span></span>
<span class="line" id="L7"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">RwLocked</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L8"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L9"> lock: RwLock,</span>
<span class="line" id="L10"> locked_data: T,</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L13"></span>
<span class="line" id="L14"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> HeldReadLock = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L15"> value: *<span class="tok-kw">const</span> T,</span>
<span class="line" id="L16"> held: RwLock.HeldRead,</span>
<span class="line" id="L17"></span>
<span class="line" id="L18"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">release</span>(self: HeldReadLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L19"> self.held.release();</span>
<span class="line" id="L20"> }</span>
<span class="line" id="L21"> };</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> HeldWriteLock = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L24"> value: *T,</span>
<span class="line" id="L25"> held: RwLock.HeldWrite,</span>
<span class="line" id="L26"></span>
<span class="line" id="L27"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">release</span>(self: HeldWriteLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L28"> self.held.release();</span>
<span class="line" id="L29"> }</span>
<span class="line" id="L30"> };</span>
<span class="line" id="L31"></span>
<span class="line" id="L32"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(data: T) Self {</span>
<span class="line" id="L33"> <span class="tok-kw">return</span> Self{</span>
<span class="line" id="L34"> .lock = RwLock.init(),</span>
<span class="line" id="L35"> .locked_data = data,</span>
<span class="line" id="L36"> };</span>
<span class="line" id="L37"> }</span>
<span class="line" id="L38"></span>
<span class="line" id="L39"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *Self) <span class="tok-type">void</span> {</span>
<span class="line" id="L40"> self.lock.deinit();</span>
<span class="line" id="L41"> }</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">acquireRead</span>(self: *Self) <span class="tok-kw">callconv</span>(.Async) HeldReadLock {</span>
<span class="line" id="L44"> <span class="tok-kw">return</span> HeldReadLock{</span>
<span class="line" id="L45"> .held = self.lock.acquireRead(),</span>
<span class="line" id="L46"> .value = &self.locked_data,</span>
<span class="line" id="L47"> };</span>
<span class="line" id="L48"> }</span>
<span class="line" id="L49"></span>
<span class="line" id="L50"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">acquireWrite</span>(self: *Self) <span class="tok-kw">callconv</span>(.Async) HeldWriteLock {</span>
<span class="line" id="L51"> <span class="tok-kw">return</span> HeldWriteLock{</span>
<span class="line" id="L52"> .held = self.lock.acquireWrite(),</span>
<span class="line" id="L53"> .value = &self.locked_data,</span>
<span class="line" id="L54"> };</span>
<span class="line" id="L55"> }</span>
<span class="line" id="L56"> };</span>
<span class="line" id="L57">}</span>
<span class="line" id="L58"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/event/wait_group.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> Loop = std.event.Loop;</span>
<span class="line" id="L4"></span>
<span class="line" id="L5"><span class="tok-comment">/// A WaitGroup keeps track and waits for a group of async tasks to finish.</span></span>
<span class="line" id="L6"><span class="tok-comment">/// Call `begin` when creating new tasks, and have tasks call `finish` when done.</span></span>
<span class="line" id="L7"><span class="tok-comment">/// You can provide a count for both operations to perform them in bulk.</span></span>
<span class="line" id="L8"><span class="tok-comment">/// Call `wait` to suspend until all tasks are completed.</span></span>
<span class="line" id="L9"><span class="tok-comment">/// Multiple waiters are supported.</span></span>
<span class="line" id="L10"><span class="tok-comment">///</span></span>
<span class="line" id="L11"><span class="tok-comment">/// WaitGroup is an instance of WaitGroupGeneric, which takes in a bitsize</span></span>
<span class="line" id="L12"><span class="tok-comment">/// for the internal counter. WaitGroup defaults to a `usize` counter.</span></span>
<span class="line" id="L13"><span class="tok-comment">/// It's also possible to define a max value for the counter so that</span></span>
<span class="line" id="L14"><span class="tok-comment">/// `begin` will return error.Overflow when the limit is reached, even</span></span>
<span class="line" id="L15"><span class="tok-comment">/// if the integer type has not has not overflowed.</span></span>
<span class="line" id="L16"><span class="tok-comment">/// By default `max_value` is set to std.math.maxInt(CounterType).</span></span>
<span class="line" id="L17"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> WaitGroup = WaitGroupGeneric(<span class="tok-builtin">@bitSizeOf</span>(<span class="tok-type">usize</span>));</span>
<span class="line" id="L18"></span>
<span class="line" id="L19"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">WaitGroupGeneric</span>(<span class="tok-kw">comptime</span> counter_size: <span class="tok-type">u16</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L20"> <span class="tok-kw">const</span> CounterType = std.meta.Int(.unsigned, counter_size);</span>
<span class="line" id="L21"></span>
<span class="line" id="L22"> <span class="tok-kw">const</span> global_event_loop = Loop.instance <span class="tok-kw">orelse</span></span>
<span class="line" id="L23"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"std.event.WaitGroup currently only works with event-based I/O"</span>);</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L26"> counter: CounterType = <span class="tok-number">0</span>,</span>
<span class="line" id="L27"> max_counter: CounterType = std.math.maxInt(CounterType),</span>
<span class="line" id="L28"> mutex: std.Thread.Mutex = .{},</span>
<span class="line" id="L29"> waiters: ?*Waiter = <span class="tok-null">null</span>,</span>
<span class="line" id="L30"> <span class="tok-kw">const</span> Waiter = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L31"> next: ?*Waiter,</span>
<span class="line" id="L32"> tail: *Waiter,</span>
<span class="line" id="L33"> node: Loop.NextTickNode,</span>
<span class="line" id="L34"> };</span>
<span class="line" id="L35"></span>
<span class="line" id="L36"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L37"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">begin</span>(self: *Self, count: CounterType) <span class="tok-kw">error</span>{Overflow}!<span class="tok-type">void</span> {</span>
<span class="line" id="L38"> self.mutex.lock();</span>
<span class="line" id="L39"> <span class="tok-kw">defer</span> self.mutex.unlock();</span>
<span class="line" id="L40"></span>
<span class="line" id="L41"> <span class="tok-kw">const</span> new_counter = <span class="tok-kw">try</span> std.math.add(CounterType, self.counter, count);</span>
<span class="line" id="L42"> <span class="tok-kw">if</span> (new_counter > self.max_counter) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Overflow;</span>
<span class="line" id="L43"> self.counter = new_counter;</span>
<span class="line" id="L44"> }</span>
<span class="line" id="L45"></span>
<span class="line" id="L46"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">finish</span>(self: *Self, count: CounterType) <span class="tok-type">void</span> {</span>
<span class="line" id="L47"> <span class="tok-kw">var</span> waiters = blk: {</span>
<span class="line" id="L48"> self.mutex.lock();</span>
<span class="line" id="L49"> <span class="tok-kw">defer</span> self.mutex.unlock();</span>
<span class="line" id="L50"> self.counter = std.math.sub(CounterType, self.counter, count) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L51"> <span class="tok-kw">if</span> (self.counter == <span class="tok-number">0</span>) {</span>
<span class="line" id="L52"> <span class="tok-kw">const</span> temp = self.waiters;</span>
<span class="line" id="L53"> self.waiters = <span class="tok-null">null</span>;</span>
<span class="line" id="L54"> <span class="tok-kw">break</span> :blk temp;</span>
<span class="line" id="L55"> }</span>
<span class="line" id="L56"> <span class="tok-kw">break</span> :blk <span class="tok-null">null</span>;</span>
<span class="line" id="L57"> };</span>
<span class="line" id="L58"></span>
<span class="line" id="L59"> <span class="tok-comment">// We don't need to hold the lock to reschedule any potential waiter.</span>
</span>
<span class="line" id="L60"> <span class="tok-kw">while</span> (waiters) |w| {</span>
<span class="line" id="L61"> <span class="tok-kw">const</span> temp_w = w;</span>
<span class="line" id="L62"> waiters = w.next;</span>
<span class="line" id="L63"> global_event_loop.onNextTick(&temp_w.node);</span>
<span class="line" id="L64"> }</span>
<span class="line" id="L65"> }</span>
<span class="line" id="L66"></span>
<span class="line" id="L67"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(self: *Self) <span class="tok-type">void</span> {</span>
<span class="line" id="L68"> self.mutex.lock();</span>
<span class="line" id="L69"></span>
<span class="line" id="L70"> <span class="tok-kw">if</span> (self.counter == <span class="tok-number">0</span>) {</span>
<span class="line" id="L71"> self.mutex.unlock();</span>
<span class="line" id="L72"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L73"> }</span>
<span class="line" id="L74"></span>
<span class="line" id="L75"> <span class="tok-kw">var</span> self_waiter: Waiter = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L76"> self_waiter.node.data = <span class="tok-builtin">@frame</span>();</span>
<span class="line" id="L77"> <span class="tok-kw">if</span> (self.waiters) |head| {</span>
<span class="line" id="L78"> head.tail.next = &self_waiter;</span>
<span class="line" id="L79"> head.tail = &self_waiter;</span>
<span class="line" id="L80"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L81"> self.waiters = &self_waiter;</span>
<span class="line" id="L82"> self_waiter.tail = &self_waiter;</span>
<span class="line" id="L83"> self_waiter.next = <span class="tok-null">null</span>;</span>
<span class="line" id="L84"> }</span>
<span class="line" id="L85"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L86"> self.mutex.unlock();</span>
<span class="line" id="L87"> }</span>
<span class="line" id="L88"> }</span>
<span class="line" id="L89"> };</span>
<span class="line" id="L90">}</span>
<span class="line" id="L91"></span>
<span class="line" id="L92"><span class="tok-kw">test</span> <span class="tok-str">"basic WaitGroup usage"</span> {</span>
<span class="line" id="L93"> <span class="tok-kw">if</span> (!std.io.is_async) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L94"></span>
<span class="line" id="L95"> <span class="tok-comment">// TODO https://github.com/ziglang/zig/issues/1908</span>
</span>
<span class="line" id="L96"> <span class="tok-kw">if</span> (builtin.single_threaded) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L97"></span>
<span class="line" id="L98"> <span class="tok-comment">// TODO https://github.com/ziglang/zig/issues/3251</span>
</span>
<span class="line" id="L99"> <span class="tok-kw">if</span> (builtin.os.tag == .freebsd) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L100"></span>
<span class="line" id="L101"> <span class="tok-kw">var</span> initial_wg = WaitGroup{};</span>
<span class="line" id="L102"> <span class="tok-kw">var</span> final_wg = WaitGroup{};</span>
<span class="line" id="L103"></span>
<span class="line" id="L104"> <span class="tok-kw">try</span> initial_wg.begin(<span class="tok-number">1</span>);</span>
<span class="line" id="L105"> <span class="tok-kw">try</span> final_wg.begin(<span class="tok-number">1</span>);</span>
<span class="line" id="L106"> <span class="tok-kw">var</span> task_frame = <span class="tok-kw">async</span> task(&initial_wg, &final_wg);</span>
<span class="line" id="L107"> initial_wg.finish(<span class="tok-number">1</span>);</span>
<span class="line" id="L108"> final_wg.wait();</span>
<span class="line" id="L109"> <span class="tok-kw">await</span> task_frame;</span>
<span class="line" id="L110">}</span>
<span class="line" id="L111"></span>
<span class="line" id="L112"><span class="tok-kw">fn</span> <span class="tok-fn">task</span>(wg_i: *WaitGroup, wg_f: *WaitGroup) <span class="tok-type">void</span> {</span>
<span class="line" id="L113"> wg_i.wait();</span>
<span class="line" id="L114"> wg_f.finish(<span class="tok-number">1</span>);</span>
<span class="line" id="L115">}</span>
<span class="line" id="L116"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> Lock = std.event.Lock;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-comment">/// ReturnType must be `void` or `E!void`</span></span>
<span class="line" id="L8"><span class="tok-comment">/// TODO This API was created back with the old design of async/await, when calling any</span></span>
<span class="line" id="L9"><span class="tok-comment">/// async function required an allocator. There is an ongoing experiment to transition</span></span>
<span class="line" id="L10"><span class="tok-comment">/// all uses of this API to the simpler and more resource-aware `std.event.Batch` API.</span></span>
<span class="line" id="L11"><span class="tok-comment">/// If the transition goes well, all usages of `Group` will be gone, and this API</span></span>
<span class="line" id="L12"><span class="tok-comment">/// will be deleted.</span></span>
<span class="line" id="L13"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">Group</span>(<span class="tok-kw">comptime</span> ReturnType: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L14"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L15"> frame_stack: Stack,</span>
<span class="line" id="L16"> alloc_stack: AllocStack,</span>
<span class="line" id="L17"> lock: Lock,</span>
<span class="line" id="L18"> allocator: Allocator,</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L21"></span>
<span class="line" id="L22"> <span class="tok-kw">const</span> Error = <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(ReturnType)) {</span>
<span class="line" id="L23"> .ErrorUnion => |payload| payload.error_set,</span>
<span class="line" id="L24"> <span class="tok-kw">else</span> => <span class="tok-type">void</span>,</span>
<span class="line" id="L25"> };</span>
<span class="line" id="L26"> <span class="tok-kw">const</span> Stack = std.atomic.Stack(<span class="tok-kw">anyframe</span>->ReturnType);</span>
<span class="line" id="L27"> <span class="tok-kw">const</span> AllocStack = std.atomic.Stack(Node);</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Node = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L30"> bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span> = &[<span class="tok-number">0</span>]<span class="tok-type">u8</span>{},</span>
<span class="line" id="L31"> handle: <span class="tok-kw">anyframe</span>->ReturnType,</span>
<span class="line" id="L32"> };</span>
<span class="line" id="L33"></span>
<span class="line" id="L34"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(allocator: Allocator) Self {</span>
<span class="line" id="L35"> <span class="tok-kw">return</span> Self{</span>
<span class="line" id="L36"> .frame_stack = Stack.init(),</span>
<span class="line" id="L37"> .alloc_stack = AllocStack.init(),</span>
<span class="line" id="L38"> .lock = .{},</span>
<span class="line" id="L39"> .allocator = allocator,</span>
<span class="line" id="L40"> };</span>
<span class="line" id="L41"> }</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"> <span class="tok-comment">/// Add a frame to the group. Thread-safe.</span></span>
<span class="line" id="L44"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">add</span>(self: *Self, handle: <span class="tok-kw">anyframe</span>->ReturnType) (<span class="tok-kw">error</span>{OutOfMemory}!<span class="tok-type">void</span>) {</span>
<span class="line" id="L45"> <span class="tok-kw">const</span> node = <span class="tok-kw">try</span> self.allocator.create(AllocStack.Node);</span>
<span class="line" id="L46"> node.* = AllocStack.Node{</span>
<span class="line" id="L47"> .next = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L48"> .data = Node{</span>
<span class="line" id="L49"> .handle = handle,</span>
<span class="line" id="L50"> },</span>
<span class="line" id="L51"> };</span>
<span class="line" id="L52"> self.alloc_stack.push(node);</span>
<span class="line" id="L53"> }</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"> <span class="tok-comment">/// Add a node to the group. Thread-safe. Cannot fail.</span></span>
<span class="line" id="L56"> <span class="tok-comment">/// `node.data` should be the frame handle to add to the group.</span></span>
<span class="line" id="L57"> <span class="tok-comment">/// The node's memory should be in the function frame of</span></span>
<span class="line" id="L58"> <span class="tok-comment">/// the handle that is in the node, or somewhere guaranteed to live</span></span>
<span class="line" id="L59"> <span class="tok-comment">/// at least as long.</span></span>
<span class="line" id="L60"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addNode</span>(self: *Self, node: *Stack.Node) <span class="tok-type">void</span> {</span>
<span class="line" id="L61"> self.frame_stack.push(node);</span>
<span class="line" id="L62"> }</span>
<span class="line" id="L63"></span>
<span class="line" id="L64"> <span class="tok-comment">/// This is equivalent to adding a frame to the group but the memory of its frame is</span></span>
<span class="line" id="L65"> <span class="tok-comment">/// allocated by the group and freed by `wait`.</span></span>
<span class="line" id="L66"> <span class="tok-comment">/// `func` must be async and have return type `ReturnType`.</span></span>
<span class="line" id="L67"> <span class="tok-comment">/// Thread-safe.</span></span>
<span class="line" id="L68"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">call</span>(self: *Self, <span class="tok-kw">comptime</span> func: <span class="tok-kw">anytype</span>, args: <span class="tok-kw">anytype</span>) <span class="tok-kw">error</span>{OutOfMemory}!<span class="tok-type">void</span> {</span>
<span class="line" id="L69"> <span class="tok-kw">var</span> frame = <span class="tok-kw">try</span> self.allocator.create(<span class="tok-builtin">@TypeOf</span>(<span class="tok-builtin">@call</span>(.{ .modifier = .async_kw }, func, args)));</span>
<span class="line" id="L70"> <span class="tok-kw">errdefer</span> self.allocator.destroy(frame);</span>
<span class="line" id="L71"> <span class="tok-kw">const</span> node = <span class="tok-kw">try</span> self.allocator.create(AllocStack.Node);</span>
<span class="line" id="L72"> <span class="tok-kw">errdefer</span> self.allocator.destroy(node);</span>
<span class="line" id="L73"> node.* = AllocStack.Node{</span>
<span class="line" id="L74"> .next = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L75"> .data = Node{</span>
<span class="line" id="L76"> .handle = frame,</span>
<span class="line" id="L77"> .bytes = std.mem.asBytes(frame),</span>
<span class="line" id="L78"> },</span>
<span class="line" id="L79"> };</span>
<span class="line" id="L80"> frame.* = <span class="tok-builtin">@call</span>(.{ .modifier = .async_kw }, func, args);</span>
<span class="line" id="L81"> self.alloc_stack.push(node);</span>
<span class="line" id="L82"> }</span>
<span class="line" id="L83"></span>
<span class="line" id="L84"> <span class="tok-comment">/// Wait for all the calls and promises of the group to complete.</span></span>
<span class="line" id="L85"> <span class="tok-comment">/// Thread-safe.</span></span>
<span class="line" id="L86"> <span class="tok-comment">/// Safe to call any number of times.</span></span>
<span class="line" id="L87"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(self: *Self) <span class="tok-kw">callconv</span>(.Async) ReturnType {</span>
<span class="line" id="L88"> <span class="tok-kw">const</span> held = self.lock.acquire();</span>
<span class="line" id="L89"> <span class="tok-kw">defer</span> held.release();</span>
<span class="line" id="L90"></span>
<span class="line" id="L91"> <span class="tok-kw">var</span> result: ReturnType = {};</span>
<span class="line" id="L92"></span>
<span class="line" id="L93"> <span class="tok-kw">while</span> (self.frame_stack.pop()) |node| {</span>
<span class="line" id="L94"> <span class="tok-kw">if</span> (Error == <span class="tok-type">void</span>) {</span>
<span class="line" id="L95"> <span class="tok-kw">await</span> node.data;</span>
<span class="line" id="L96"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L97"> (<span class="tok-kw">await</span> node.data) <span class="tok-kw">catch</span> |err| {</span>
<span class="line" id="L98"> result = err;</span>
<span class="line" id="L99"> };</span>
<span class="line" id="L100"> }</span>
<span class="line" id="L101"> }</span>
<span class="line" id="L102"> <span class="tok-kw">while</span> (self.alloc_stack.pop()) |node| {</span>
<span class="line" id="L103"> <span class="tok-kw">const</span> handle = node.data.handle;</span>
<span class="line" id="L104"> <span class="tok-kw">if</span> (Error == <span class="tok-type">void</span>) {</span>
<span class="line" id="L105"> <span class="tok-kw">await</span> handle;</span>
<span class="line" id="L106"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L107"> (<span class="tok-kw">await</span> handle) <span class="tok-kw">catch</span> |err| {</span>
<span class="line" id="L108"> result = err;</span>
<span class="line" id="L109"> };</span>
<span class="line" id="L110"> }</span>
<span class="line" id="L111"> self.allocator.free(node.data.bytes);</span>
<span class="line" id="L112"> self.allocator.destroy(node);</span>
<span class="line" id="L113"> }</span>
<span class="line" id="L114"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L115"> }</span>
<span class="line" id="L116"> };</span>
<span class="line" id="L117">}</span>
<span class="line" id="L118"></span>
<span class="line" id="L119"><span class="tok-kw">test</span> <span class="tok-str">"std.event.Group"</span> {</span>
<span class="line" id="L120"> <span class="tok-comment">// https://github.com/ziglang/zig/issues/1908</span>
</span>
<span class="line" id="L121"> <span class="tok-kw">if</span> (builtin.single_threaded) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L122"></span>
<span class="line" id="L123"> <span class="tok-kw">if</span> (!std.io.is_async) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L124"></span>
<span class="line" id="L125"> <span class="tok-comment">// TODO this file has bit-rotted. repair it</span>
</span>
<span class="line" id="L126"> <span class="tok-kw">if</span> (<span class="tok-null">true</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L127"></span>
<span class="line" id="L128"> _ = <span class="tok-kw">async</span> testGroup(std.heap.page_allocator);</span>
<span class="line" id="L129">}</span>
<span class="line" id="L130"><span class="tok-kw">fn</span> <span class="tok-fn">testGroup</span>(allocator: Allocator) <span class="tok-kw">callconv</span>(.Async) <span class="tok-type">void</span> {</span>
<span class="line" id="L131"> <span class="tok-kw">var</span> count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L132"> <span class="tok-kw">var</span> group = Group(<span class="tok-type">void</span>).init(allocator);</span>
<span class="line" id="L133"> <span class="tok-kw">var</span> sleep_a_little_frame = <span class="tok-kw">async</span> sleepALittle(&count);</span>
<span class="line" id="L134"> group.add(&sleep_a_little_frame) <span class="tok-kw">catch</span> <span class="tok-builtin">@panic</span>(<span class="tok-str">"memory"</span>);</span>
<span class="line" id="L135"> <span class="tok-kw">var</span> increase_by_ten_frame = <span class="tok-kw">async</span> increaseByTen(&count);</span>
<span class="line" id="L136"> group.add(&increase_by_ten_frame) <span class="tok-kw">catch</span> <span class="tok-builtin">@panic</span>(<span class="tok-str">"memory"</span>);</span>
<span class="line" id="L137"> group.wait();</span>
<span class="line" id="L138"> <span class="tok-kw">try</span> testing.expect(count == <span class="tok-number">11</span>);</span>
<span class="line" id="L139"></span>
<span class="line" id="L140"> <span class="tok-kw">var</span> another = Group(<span class="tok-type">anyerror</span>!<span class="tok-type">void</span>).init(allocator);</span>
<span class="line" id="L141"> <span class="tok-kw">var</span> something_else_frame = <span class="tok-kw">async</span> somethingElse();</span>
<span class="line" id="L142"> another.add(&something_else_frame) <span class="tok-kw">catch</span> <span class="tok-builtin">@panic</span>(<span class="tok-str">"memory"</span>);</span>
<span class="line" id="L143"> <span class="tok-kw">var</span> something_that_fails_frame = <span class="tok-kw">async</span> doSomethingThatFails();</span>
<span class="line" id="L144"> another.add(&something_that_fails_frame) <span class="tok-kw">catch</span> <span class="tok-builtin">@panic</span>(<span class="tok-str">"memory"</span>);</span>
<span class="line" id="L145"> <span class="tok-kw">try</span> testing.expectError(<span class="tok-kw">error</span>.ItBroke, another.wait());</span>
<span class="line" id="L146">}</span>
<span class="line" id="L147"><span class="tok-kw">fn</span> <span class="tok-fn">sleepALittle</span>(count: *<span class="tok-type">usize</span>) <span class="tok-kw">callconv</span>(.Async) <span class="tok-type">void</span> {</span>
<span class="line" id="L148"> std.time.sleep(<span class="tok-number">1</span> * std.time.ns_per_ms);</span>
<span class="line" id="L149"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, count, .Add, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L150">}</span>
<span class="line" id="L151"><span class="tok-kw">fn</span> <span class="tok-fn">increaseByTen</span>(count: *<span class="tok-type">usize</span>) <span class="tok-kw">callconv</span>(.Async) <span class="tok-type">void</span> {</span>
<span class="line" id="L152"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L153"> <span class="tok-kw">while</span> (i < <span class="tok-number">10</span>) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L154"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, count, .Add, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L155"> }</span>
<span class="line" id="L156">}</span>
<span class="line" id="L157"><span class="tok-kw">fn</span> <span class="tok-fn">doSomethingThatFails</span>() <span class="tok-kw">callconv</span>(.Async) <span class="tok-type">anyerror</span>!<span class="tok-type">void</span> {}</span>
<span class="line" id="L158"><span class="tok-kw">fn</span> <span class="tok-fn">somethingElse</span>() <span class="tok-kw">callconv</span>(.Async) <span class="tok-type">anyerror</span>!<span class="tok-type">void</span> {</span>
<span class="line" id="L159"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ItBroke;</span>
<span class="line" id="L160">}</span>
<span class="line" id="L161"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> Loop = std.event.Loop;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-comment">/// Many producer, many consumer, thread-safe, runtime configurable buffer size.</span></span>
<span class="line" id="L8"><span class="tok-comment">/// When buffer is empty, consumers suspend and are resumed by producers.</span></span>
<span class="line" id="L9"><span class="tok-comment">/// When buffer is full, producers suspend and are resumed by consumers.</span></span>
<span class="line" id="L10"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">Channel</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L11"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L12"> getters: std.atomic.Queue(GetNode),</span>
<span class="line" id="L13"> or_null_queue: std.atomic.Queue(*std.atomic.Queue(GetNode).Node),</span>
<span class="line" id="L14"> putters: std.atomic.Queue(PutNode),</span>
<span class="line" id="L15"> get_count: <span class="tok-type">usize</span>,</span>
<span class="line" id="L16"> put_count: <span class="tok-type">usize</span>,</span>
<span class="line" id="L17"> dispatch_lock: <span class="tok-type">bool</span>,</span>
<span class="line" id="L18"> need_dispatch: <span class="tok-type">bool</span>,</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"> <span class="tok-comment">// simple fixed size ring buffer</span>
</span>
<span class="line" id="L21"> buffer_nodes: []T,</span>
<span class="line" id="L22"> buffer_index: <span class="tok-type">usize</span>,</span>
<span class="line" id="L23"> buffer_len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"> <span class="tok-kw">const</span> SelfChannel = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L26"> <span class="tok-kw">const</span> GetNode = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L27"> tick_node: *Loop.NextTickNode,</span>
<span class="line" id="L28"> data: Data,</span>
<span class="line" id="L29"></span>
<span class="line" id="L30"> <span class="tok-kw">const</span> Data = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L31"> Normal: Normal,</span>
<span class="line" id="L32"> OrNull: OrNull,</span>
<span class="line" id="L33"> };</span>
<span class="line" id="L34"></span>
<span class="line" id="L35"> <span class="tok-kw">const</span> Normal = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L36"> ptr: *T,</span>
<span class="line" id="L37"> };</span>
<span class="line" id="L38"></span>
<span class="line" id="L39"> <span class="tok-kw">const</span> OrNull = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L40"> ptr: *?T,</span>
<span class="line" id="L41"> or_null: *std.atomic.Queue(*std.atomic.Queue(GetNode).Node).Node,</span>
<span class="line" id="L42"> };</span>
<span class="line" id="L43"> };</span>
<span class="line" id="L44"> <span class="tok-kw">const</span> PutNode = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L45"> data: T,</span>
<span class="line" id="L46"> tick_node: *Loop.NextTickNode,</span>
<span class="line" id="L47"> };</span>
<span class="line" id="L48"></span>
<span class="line" id="L49"> <span class="tok-kw">const</span> global_event_loop = Loop.instance <span class="tok-kw">orelse</span></span>
<span class="line" id="L50"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"std.event.Channel currently only works with event-based I/O"</span>);</span>
<span class="line" id="L51"></span>
<span class="line" id="L52"> <span class="tok-comment">/// Call `deinit` to free resources when done.</span></span>
<span class="line" id="L53"> <span class="tok-comment">/// `buffer` must live until `deinit` is called.</span></span>
<span class="line" id="L54"> <span class="tok-comment">/// For a zero length buffer, use `[0]T{}`.</span></span>
<span class="line" id="L55"> <span class="tok-comment">/// TODO https://github.com/ziglang/zig/issues/2765</span></span>
<span class="line" id="L56"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(self: *SelfChannel, buffer: []T) <span class="tok-type">void</span> {</span>
<span class="line" id="L57"> <span class="tok-comment">// The ring buffer implementation only works with power of 2 buffer sizes</span>
</span>
<span class="line" id="L58"> <span class="tok-comment">// because of relying on subtracting across zero. For example (0 -% 1) % 10 == 5</span>
</span>
<span class="line" id="L59"> assert(buffer.len == <span class="tok-number">0</span> <span class="tok-kw">or</span> <span class="tok-builtin">@popCount</span>(buffer.len) == <span class="tok-number">1</span>);</span>
<span class="line" id="L60"></span>
<span class="line" id="L61"> self.* = SelfChannel{</span>
<span class="line" id="L62"> .buffer_len = <span class="tok-number">0</span>,</span>
<span class="line" id="L63"> .buffer_nodes = buffer,</span>
<span class="line" id="L64"> .buffer_index = <span class="tok-number">0</span>,</span>
<span class="line" id="L65"> .dispatch_lock = <span class="tok-null">false</span>,</span>
<span class="line" id="L66"> .need_dispatch = <span class="tok-null">false</span>,</span>
<span class="line" id="L67"> .getters = std.atomic.Queue(GetNode).init(),</span>
<span class="line" id="L68"> .putters = std.atomic.Queue(PutNode).init(),</span>
<span class="line" id="L69"> .or_null_queue = std.atomic.Queue(*std.atomic.Queue(GetNode).Node).init(),</span>
<span class="line" id="L70"> .get_count = <span class="tok-number">0</span>,</span>
<span class="line" id="L71"> .put_count = <span class="tok-number">0</span>,</span>
<span class="line" id="L72"> };</span>
<span class="line" id="L73"> }</span>
<span class="line" id="L74"></span>
<span class="line" id="L75"> <span class="tok-comment">/// Must be called when all calls to put and get have suspended and no more calls occur.</span></span>
<span class="line" id="L76"> <span class="tok-comment">/// This can be omitted if caller can guarantee that the suspended putters and getters</span></span>
<span class="line" id="L77"> <span class="tok-comment">/// do not need to be run to completion. Note that this may leave awaiters hanging.</span></span>
<span class="line" id="L78"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *SelfChannel) <span class="tok-type">void</span> {</span>
<span class="line" id="L79"> <span class="tok-kw">while</span> (self.getters.get()) |get_node| {</span>
<span class="line" id="L80"> <span class="tok-kw">resume</span> get_node.data.tick_node.data;</span>
<span class="line" id="L81"> }</span>
<span class="line" id="L82"> <span class="tok-kw">while</span> (self.putters.get()) |put_node| {</span>
<span class="line" id="L83"> <span class="tok-kw">resume</span> put_node.data.tick_node.data;</span>
<span class="line" id="L84"> }</span>
<span class="line" id="L85"> self.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L86"> }</span>
<span class="line" id="L87"></span>
<span class="line" id="L88"> <span class="tok-comment">/// puts a data item in the channel. The function returns when the value has been added to the</span></span>
<span class="line" id="L89"> <span class="tok-comment">/// buffer, or in the case of a zero size buffer, when the item has been retrieved by a getter.</span></span>
<span class="line" id="L90"> <span class="tok-comment">/// Or when the channel is destroyed.</span></span>
<span class="line" id="L91"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">put</span>(self: *SelfChannel, data: T) <span class="tok-type">void</span> {</span>
<span class="line" id="L92"> <span class="tok-kw">var</span> my_tick_node = Loop.NextTickNode{ .data = <span class="tok-builtin">@frame</span>() };</span>
<span class="line" id="L93"> <span class="tok-kw">var</span> queue_node = std.atomic.Queue(PutNode).Node{</span>
<span class="line" id="L94"> .data = PutNode{</span>
<span class="line" id="L95"> .tick_node = &my_tick_node,</span>
<span class="line" id="L96"> .data = data,</span>
<span class="line" id="L97"> },</span>
<span class="line" id="L98"> };</span>
<span class="line" id="L99"></span>
<span class="line" id="L100"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L101"> self.putters.put(&queue_node);</span>
<span class="line" id="L102"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &self.put_count, .Add, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L103"></span>
<span class="line" id="L104"> self.dispatch();</span>
<span class="line" id="L105"> }</span>
<span class="line" id="L106"> }</span>
<span class="line" id="L107"></span>
<span class="line" id="L108"> <span class="tok-comment">/// await this function to get an item from the channel. If the buffer is empty, the frame will</span></span>
<span class="line" id="L109"> <span class="tok-comment">/// complete when the next item is put in the channel.</span></span>
<span class="line" id="L110"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">get</span>(self: *SelfChannel) <span class="tok-kw">callconv</span>(.Async) T {</span>
<span class="line" id="L111"> <span class="tok-comment">// TODO https://github.com/ziglang/zig/issues/2765</span>
</span>
<span class="line" id="L112"> <span class="tok-kw">var</span> result: T = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L113"> <span class="tok-kw">var</span> my_tick_node = Loop.NextTickNode{ .data = <span class="tok-builtin">@frame</span>() };</span>
<span class="line" id="L114"> <span class="tok-kw">var</span> queue_node = std.atomic.Queue(GetNode).Node{</span>
<span class="line" id="L115"> .data = GetNode{</span>
<span class="line" id="L116"> .tick_node = &my_tick_node,</span>
<span class="line" id="L117"> .data = GetNode.Data{</span>
<span class="line" id="L118"> .Normal = GetNode.Normal{ .ptr = &result },</span>
<span class="line" id="L119"> },</span>
<span class="line" id="L120"> },</span>
<span class="line" id="L121"> };</span>
<span class="line" id="L122"></span>
<span class="line" id="L123"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L124"> self.getters.put(&queue_node);</span>
<span class="line" id="L125"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &self.get_count, .Add, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L126"></span>
<span class="line" id="L127"> self.dispatch();</span>
<span class="line" id="L128"> }</span>
<span class="line" id="L129"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L130"> }</span>
<span class="line" id="L131"></span>
<span class="line" id="L132"> <span class="tok-comment">//pub async fn select(comptime EnumUnion: type, channels: ...) EnumUnion {</span>
</span>
<span class="line" id="L133"> <span class="tok-comment">// assert(@memberCount(EnumUnion) == channels.len); // enum union and channels mismatch</span>
</span>
<span class="line" id="L134"> <span class="tok-comment">// assert(channels.len != 0); // enum unions cannot have 0 fields</span>
</span>
<span class="line" id="L135"> <span class="tok-comment">// if (channels.len == 1) {</span>
</span>
<span class="line" id="L136"> <span class="tok-comment">// const result = await (async channels[0].get() catch unreachable);</span>
</span>
<span class="line" id="L137"> <span class="tok-comment">// return @unionInit(EnumUnion, @memberName(EnumUnion, 0), result);</span>
</span>
<span class="line" id="L138"> <span class="tok-comment">// }</span>
</span>
<span class="line" id="L139"> <span class="tok-comment">//}</span>
</span>
<span class="line" id="L140"></span>
<span class="line" id="L141"> <span class="tok-comment">/// Get an item from the channel. If the buffer is empty and there are no</span></span>
<span class="line" id="L142"> <span class="tok-comment">/// puts waiting, this returns `null`.</span></span>
<span class="line" id="L143"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getOrNull</span>(self: *SelfChannel) ?T {</span>
<span class="line" id="L144"> <span class="tok-comment">// TODO integrate this function with named return values</span>
</span>
<span class="line" id="L145"> <span class="tok-comment">// so we can get rid of this extra result copy</span>
</span>
<span class="line" id="L146"> <span class="tok-kw">var</span> result: ?T = <span class="tok-null">null</span>;</span>
<span class="line" id="L147"> <span class="tok-kw">var</span> my_tick_node = Loop.NextTickNode{ .data = <span class="tok-builtin">@frame</span>() };</span>
<span class="line" id="L148"> <span class="tok-kw">var</span> or_null_node = std.atomic.Queue(*std.atomic.Queue(GetNode).Node).Node{ .data = <span class="tok-null">undefined</span> };</span>
<span class="line" id="L149"> <span class="tok-kw">var</span> queue_node = std.atomic.Queue(GetNode).Node{</span>
<span class="line" id="L150"> .data = GetNode{</span>
<span class="line" id="L151"> .tick_node = &my_tick_node,</span>
<span class="line" id="L152"> .data = GetNode.Data{</span>
<span class="line" id="L153"> .OrNull = GetNode.OrNull{</span>
<span class="line" id="L154"> .ptr = &result,</span>
<span class="line" id="L155"> .or_null = &or_null_node,</span>
<span class="line" id="L156"> },</span>
<span class="line" id="L157"> },</span>
<span class="line" id="L158"> },</span>
<span class="line" id="L159"> };</span>
<span class="line" id="L160"> or_null_node.data = &queue_node;</span>
<span class="line" id="L161"></span>
<span class="line" id="L162"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L163"> self.getters.put(&queue_node);</span>
<span class="line" id="L164"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &self.get_count, .Add, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L165"> self.or_null_queue.put(&or_null_node);</span>
<span class="line" id="L166"></span>
<span class="line" id="L167"> self.dispatch();</span>
<span class="line" id="L168"> }</span>
<span class="line" id="L169"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L170"> }</span>
<span class="line" id="L171"></span>
<span class="line" id="L172"> <span class="tok-kw">fn</span> <span class="tok-fn">dispatch</span>(self: *SelfChannel) <span class="tok-type">void</span> {</span>
<span class="line" id="L173"> <span class="tok-comment">// set the "need dispatch" flag</span>
</span>
<span class="line" id="L174"> <span class="tok-builtin">@atomicStore</span>(<span class="tok-type">bool</span>, &self.need_dispatch, <span class="tok-null">true</span>, .SeqCst);</span>
<span class="line" id="L175"></span>
<span class="line" id="L176"> lock: <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L177"> <span class="tok-comment">// set the lock flag</span>
</span>
<span class="line" id="L178"> <span class="tok-kw">if</span> (<span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">bool</span>, &self.dispatch_lock, .Xchg, <span class="tok-null">true</span>, .SeqCst)) <span class="tok-kw">return</span>;</span>
<span class="line" id="L179"></span>
<span class="line" id="L180"> <span class="tok-comment">// clear the need_dispatch flag since we're about to do it</span>
</span>
<span class="line" id="L181"> <span class="tok-builtin">@atomicStore</span>(<span class="tok-type">bool</span>, &self.need_dispatch, <span class="tok-null">false</span>, .SeqCst);</span>
<span class="line" id="L182"></span>
<span class="line" id="L183"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L184"> one_dispatch: {</span>
<span class="line" id="L185"> <span class="tok-comment">// later we correct these extra subtractions</span>
</span>
<span class="line" id="L186"> <span class="tok-kw">var</span> get_count = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &self.get_count, .Sub, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L187"> <span class="tok-kw">var</span> put_count = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &self.put_count, .Sub, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L188"></span>
<span class="line" id="L189"> <span class="tok-comment">// transfer self.buffer to self.getters</span>
</span>
<span class="line" id="L190"> <span class="tok-kw">while</span> (self.buffer_len != <span class="tok-number">0</span>) {</span>
<span class="line" id="L191"> <span class="tok-kw">if</span> (get_count == <span class="tok-number">0</span>) <span class="tok-kw">break</span> :one_dispatch;</span>
<span class="line" id="L192"></span>
<span class="line" id="L193"> <span class="tok-kw">const</span> get_node = &self.getters.get().?.data;</span>
<span class="line" id="L194"> <span class="tok-kw">switch</span> (get_node.data) {</span>
<span class="line" id="L195"> GetNode.Data.Normal => |info| {</span>
<span class="line" id="L196"> info.ptr.* = self.buffer_nodes[(self.buffer_index -% self.buffer_len) % self.buffer_nodes.len];</span>
<span class="line" id="L197"> },</span>
<span class="line" id="L198"> GetNode.Data.OrNull => |info| {</span>
<span class="line" id="L199"> _ = self.or_null_queue.remove(info.or_null);</span>
<span class="line" id="L200"> info.ptr.* = self.buffer_nodes[(self.buffer_index -% self.buffer_len) % self.buffer_nodes.len];</span>
<span class="line" id="L201"> },</span>
<span class="line" id="L202"> }</span>
<span class="line" id="L203"> global_event_loop.onNextTick(get_node.tick_node);</span>
<span class="line" id="L204"> self.buffer_len -= <span class="tok-number">1</span>;</span>
<span class="line" id="L205"></span>
<span class="line" id="L206"> get_count = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &self.get_count, .Sub, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L207"> }</span>
<span class="line" id="L208"></span>
<span class="line" id="L209"> <span class="tok-comment">// direct transfer self.putters to self.getters</span>
</span>
<span class="line" id="L210"> <span class="tok-kw">while</span> (get_count != <span class="tok-number">0</span> <span class="tok-kw">and</span> put_count != <span class="tok-number">0</span>) {</span>
<span class="line" id="L211"> <span class="tok-kw">const</span> get_node = &self.getters.get().?.data;</span>
<span class="line" id="L212"> <span class="tok-kw">const</span> put_node = &self.putters.get().?.data;</span>
<span class="line" id="L213"></span>
<span class="line" id="L214"> <span class="tok-kw">switch</span> (get_node.data) {</span>
<span class="line" id="L215"> GetNode.Data.Normal => |info| {</span>
<span class="line" id="L216"> info.ptr.* = put_node.data;</span>
<span class="line" id="L217"> },</span>
<span class="line" id="L218"> GetNode.Data.OrNull => |info| {</span>
<span class="line" id="L219"> _ = self.or_null_queue.remove(info.or_null);</span>
<span class="line" id="L220"> info.ptr.* = put_node.data;</span>
<span class="line" id="L221"> },</span>
<span class="line" id="L222"> }</span>
<span class="line" id="L223"> global_event_loop.onNextTick(get_node.tick_node);</span>
<span class="line" id="L224"> global_event_loop.onNextTick(put_node.tick_node);</span>
<span class="line" id="L225"></span>
<span class="line" id="L226"> get_count = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &self.get_count, .Sub, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L227"> put_count = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &self.put_count, .Sub, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L228"> }</span>
<span class="line" id="L229"></span>
<span class="line" id="L230"> <span class="tok-comment">// transfer self.putters to self.buffer</span>
</span>
<span class="line" id="L231"> <span class="tok-kw">while</span> (self.buffer_len != self.buffer_nodes.len <span class="tok-kw">and</span> put_count != <span class="tok-number">0</span>) {</span>
<span class="line" id="L232"> <span class="tok-kw">const</span> put_node = &self.putters.get().?.data;</span>
<span class="line" id="L233"></span>
<span class="line" id="L234"> self.buffer_nodes[self.buffer_index % self.buffer_nodes.len] = put_node.data;</span>
<span class="line" id="L235"> global_event_loop.onNextTick(put_node.tick_node);</span>
<span class="line" id="L236"> self.buffer_index +%= <span class="tok-number">1</span>;</span>
<span class="line" id="L237"> self.buffer_len += <span class="tok-number">1</span>;</span>
<span class="line" id="L238"></span>
<span class="line" id="L239"> put_count = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &self.put_count, .Sub, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L240"> }</span>
<span class="line" id="L241"> }</span>
<span class="line" id="L242"></span>
<span class="line" id="L243"> <span class="tok-comment">// undo the extra subtractions</span>
</span>
<span class="line" id="L244"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &self.get_count, .Add, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L245"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &self.put_count, .Add, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L246"></span>
<span class="line" id="L247"> <span class="tok-comment">// All the "get or null" functions should resume now.</span>
</span>
<span class="line" id="L248"> <span class="tok-kw">var</span> remove_count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L249"> <span class="tok-kw">while</span> (self.or_null_queue.get()) |or_null_node| {</span>
<span class="line" id="L250"> remove_count += <span class="tok-builtin">@intFromBool</span>(self.getters.remove(or_null_node.data));</span>
<span class="line" id="L251"> global_event_loop.onNextTick(or_null_node.data.data.tick_node);</span>
<span class="line" id="L252"> }</span>
<span class="line" id="L253"> <span class="tok-kw">if</span> (remove_count != <span class="tok-number">0</span>) {</span>
<span class="line" id="L254"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &self.get_count, .Sub, remove_count, .SeqCst);</span>
<span class="line" id="L255"> }</span>
<span class="line" id="L256"></span>
<span class="line" id="L257"> <span class="tok-comment">// clear need-dispatch flag</span>
</span>
<span class="line" id="L258"> <span class="tok-kw">if</span> (<span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">bool</span>, &self.need_dispatch, .Xchg, <span class="tok-null">false</span>, .SeqCst)) <span class="tok-kw">continue</span>;</span>
<span class="line" id="L259"></span>
<span class="line" id="L260"> assert(<span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">bool</span>, &self.dispatch_lock, .Xchg, <span class="tok-null">false</span>, .SeqCst));</span>
<span class="line" id="L261"></span>
<span class="line" id="L262"> <span class="tok-comment">// we have to check again now that we unlocked</span>
</span>
<span class="line" id="L263"> <span class="tok-kw">if</span> (<span class="tok-builtin">@atomicLoad</span>(<span class="tok-type">bool</span>, &self.need_dispatch, .SeqCst)) <span class="tok-kw">continue</span> :lock;</span>
<span class="line" id="L264"></span>
<span class="line" id="L265"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L266"> }</span>
<span class="line" id="L267"> }</span>
<span class="line" id="L268"> }</span>
<span class="line" id="L269"> };</span>
<span class="line" id="L270">}</span>
<span class="line" id="L271"></span>
<span class="line" id="L272"><span class="tok-kw">test</span> <span class="tok-str">"std.event.Channel"</span> {</span>
<span class="line" id="L273"> <span class="tok-kw">if</span> (!std.io.is_async) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L274"></span>
<span class="line" id="L275"> <span class="tok-comment">// https://github.com/ziglang/zig/issues/1908</span>
</span>
<span class="line" id="L276"> <span class="tok-kw">if</span> (builtin.single_threaded) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L277"></span>
<span class="line" id="L278"> <span class="tok-comment">// https://github.com/ziglang/zig/issues/3251</span>
</span>
<span class="line" id="L279"> <span class="tok-kw">if</span> (builtin.os.tag == .freebsd) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L280"></span>
<span class="line" id="L281"> <span class="tok-kw">var</span> channel: Channel(<span class="tok-type">i32</span>) = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L282"> channel.init(&[<span class="tok-number">0</span>]<span class="tok-type">i32</span>{});</span>
<span class="line" id="L283"> <span class="tok-kw">defer</span> channel.deinit();</span>
<span class="line" id="L284"></span>
<span class="line" id="L285"> <span class="tok-kw">var</span> handle = <span class="tok-kw">async</span> testChannelGetter(&channel);</span>
<span class="line" id="L286"> <span class="tok-kw">var</span> putter = <span class="tok-kw">async</span> testChannelPutter(&channel);</span>
<span class="line" id="L287"></span>
<span class="line" id="L288"> <span class="tok-kw">await</span> handle;</span>
<span class="line" id="L289"> <span class="tok-kw">await</span> putter;</span>
<span class="line" id="L290">}</span>
<span class="line" id="L291"></span>
<span class="line" id="L292"><span class="tok-kw">test</span> <span class="tok-str">"std.event.Channel wraparound"</span> {</span>
<span class="line" id="L293"></span>
<span class="line" id="L294"> <span class="tok-comment">// TODO provide a way to run tests in evented I/O mode</span>
</span>
<span class="line" id="L295"> <span class="tok-kw">if</span> (!std.io.is_async) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L296"></span>
<span class="line" id="L297"> <span class="tok-kw">const</span> channel_size = <span class="tok-number">2</span>;</span>
<span class="line" id="L298"></span>
<span class="line" id="L299"> <span class="tok-kw">var</span> buf: [channel_size]<span class="tok-type">i32</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L300"> <span class="tok-kw">var</span> channel: Channel(<span class="tok-type">i32</span>) = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L301"> channel.init(&buf);</span>
<span class="line" id="L302"> <span class="tok-kw">defer</span> channel.deinit();</span>
<span class="line" id="L303"></span>
<span class="line" id="L304"> <span class="tok-comment">// add items to channel and pull them out until</span>
</span>
<span class="line" id="L305"> <span class="tok-comment">// the buffer wraps around, make sure it doesn't crash.</span>
</span>
<span class="line" id="L306"> channel.put(<span class="tok-number">5</span>);</span>
<span class="line" id="L307"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-number">5</span>), channel.get());</span>
<span class="line" id="L308"> channel.put(<span class="tok-number">6</span>);</span>
<span class="line" id="L309"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-number">6</span>), channel.get());</span>
<span class="line" id="L310"> channel.put(<span class="tok-number">7</span>);</span>
<span class="line" id="L311"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-number">7</span>), channel.get());</span>
<span class="line" id="L312">}</span>
<span class="line" id="L313"><span class="tok-kw">fn</span> <span class="tok-fn">testChannelGetter</span>(channel: *Channel(<span class="tok-type">i32</span>)) <span class="tok-kw">callconv</span>(.Async) <span class="tok-type">void</span> {</span>
<span class="line" id="L314"> <span class="tok-kw">const</span> value1 = channel.get();</span>
<span class="line" id="L315"> <span class="tok-kw">try</span> testing.expect(value1 == <span class="tok-number">1234</span>);</span>
<span class="line" id="L316"></span>
<span class="line" id="L317"> <span class="tok-kw">const</span> value2 = channel.get();</span>
<span class="line" id="L318"> <span class="tok-kw">try</span> testing.expect(value2 == <span class="tok-number">4567</span>);</span>
<span class="line" id="L319"></span>
<span class="line" id="L320"> <span class="tok-kw">const</span> value3 = channel.getOrNull();</span>
<span class="line" id="L321"> <span class="tok-kw">try</span> testing.expect(value3 == <span class="tok-null">null</span>);</span>
<span class="line" id="L322"></span>
<span class="line" id="L323"> <span class="tok-kw">var</span> last_put = <span class="tok-kw">async</span> testPut(channel, <span class="tok-number">4444</span>);</span>
<span class="line" id="L324"> <span class="tok-kw">const</span> value4 = channel.getOrNull();</span>
<span class="line" id="L325"> <span class="tok-kw">try</span> testing.expect(value4.? == <span class="tok-number">4444</span>);</span>
<span class="line" id="L326"> <span class="tok-kw">await</span> last_put;</span>
<span class="line" id="L327">}</span>
<span class="line" id="L328"><span class="tok-kw">fn</span> <span class="tok-fn">testChannelPutter</span>(channel: *Channel(<span class="tok-type">i32</span>)) <span class="tok-kw">callconv</span>(.Async) <span class="tok-type">void</span> {</span>
<span class="line" id="L329"> channel.put(<span class="tok-number">1234</span>);</span>
<span class="line" id="L330"> channel.put(<span class="tok-number">4567</span>);</span>
<span class="line" id="L331">}</span>
<span class="line" id="L332"><span class="tok-kw">fn</span> <span class="tok-fn">testPut</span>(channel: *Channel(<span class="tok-type">i32</span>), value: <span class="tok-type">i32</span>) <span class="tok-kw">callconv</span>(.Async) <span class="tok-type">void</span> {</span>
<span class="line" id="L333"> channel.put(value);</span>
<span class="line" id="L334">}</span>
<span class="line" id="L335"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L3"></span>
<span class="line" id="L4"><span class="tok-comment">/// Performs multiple async functions in parallel, without heap allocation.</span></span>
<span class="line" id="L5"><span class="tok-comment">/// Async function frames are managed externally to this abstraction, and</span></span>
<span class="line" id="L6"><span class="tok-comment">/// passed in via the `add` function. Once all the jobs are added, call `wait`.</span></span>
<span class="line" id="L7"><span class="tok-comment">/// This API is *not* thread-safe. The object must be accessed from one thread at</span></span>
<span class="line" id="L8"><span class="tok-comment">/// a time, however, it need not be the same thread.</span></span>
<span class="line" id="L9"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">Batch</span>(</span>
<span class="line" id="L10"> <span class="tok-comment">/// The return value for each job.</span></span>
<span class="line" id="L11"> <span class="tok-comment">/// If a job slot was re-used due to maxed out concurrency, then its result</span></span>
<span class="line" id="L12"> <span class="tok-comment">/// value will be overwritten. The values can be accessed with the `results` field.</span></span>
<span class="line" id="L13"> <span class="tok-kw">comptime</span> Result: <span class="tok-type">type</span>,</span>
<span class="line" id="L14"> <span class="tok-comment">/// How many jobs to run in parallel.</span></span>
<span class="line" id="L15"> <span class="tok-kw">comptime</span> max_jobs: <span class="tok-type">comptime_int</span>,</span>
<span class="line" id="L16"> <span class="tok-comment">/// Controls whether the `add` and `wait` functions will be async functions.</span></span>
<span class="line" id="L17"> <span class="tok-kw">comptime</span> async_behavior: <span class="tok-kw">enum</span> {</span>
<span class="line" id="L18"> <span class="tok-comment">/// Observe the value of `std.io.is_async` to decide whether `add`</span></span>
<span class="line" id="L19"> <span class="tok-comment">/// and `wait` will be async functions. Asserts that the jobs do not suspend when</span></span>
<span class="line" id="L20"> <span class="tok-comment">/// `std.options.io_mode == .blocking`. This is a generally safe assumption, and the</span></span>
<span class="line" id="L21"> <span class="tok-comment">/// usual recommended option for this parameter.</span></span>
<span class="line" id="L22"> auto_async,</span>
<span class="line" id="L23"></span>
<span class="line" id="L24"> <span class="tok-comment">/// Always uses the `nosuspend` keyword when using `await` on the jobs,</span></span>
<span class="line" id="L25"> <span class="tok-comment">/// making `add` and `wait` non-async functions. Asserts that the jobs do not suspend.</span></span>
<span class="line" id="L26"> never_async,</span>
<span class="line" id="L27"></span>
<span class="line" id="L28"> <span class="tok-comment">/// `add` and `wait` use regular `await` keyword, making them async functions.</span></span>
<span class="line" id="L29"> always_async,</span>
<span class="line" id="L30"> },</span>
<span class="line" id="L31">) <span class="tok-type">type</span> {</span>
<span class="line" id="L32"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L33"> jobs: [max_jobs]Job,</span>
<span class="line" id="L34"> next_job_index: <span class="tok-type">usize</span>,</span>
<span class="line" id="L35"> collected_result: CollectedResult,</span>
<span class="line" id="L36"></span>
<span class="line" id="L37"> <span class="tok-kw">const</span> Job = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L38"> frame: ?<span class="tok-kw">anyframe</span>->Result,</span>
<span class="line" id="L39"> result: Result,</span>
<span class="line" id="L40"> };</span>
<span class="line" id="L41"></span>
<span class="line" id="L42"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L43"></span>
<span class="line" id="L44"> <span class="tok-kw">const</span> CollectedResult = <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(Result)) {</span>
<span class="line" id="L45"> .ErrorUnion => Result,</span>
<span class="line" id="L46"> <span class="tok-kw">else</span> => <span class="tok-type">void</span>,</span>
<span class="line" id="L47"> };</span>
<span class="line" id="L48"></span>
<span class="line" id="L49"> <span class="tok-kw">const</span> async_ok = <span class="tok-kw">switch</span> (async_behavior) {</span>
<span class="line" id="L50"> .auto_async => std.io.is_async,</span>
<span class="line" id="L51"> .never_async => <span class="tok-null">false</span>,</span>
<span class="line" id="L52"> .always_async => <span class="tok-null">true</span>,</span>
<span class="line" id="L53"> };</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>() Self {</span>
<span class="line" id="L56"> <span class="tok-kw">return</span> Self{</span>
<span class="line" id="L57"> .jobs = [<span class="tok-number">1</span>]Job{</span>
<span class="line" id="L58"> .{</span>
<span class="line" id="L59"> .frame = <span class="tok-null">null</span>,</span>
<span class="line" id="L60"> .result = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L61"> },</span>
<span class="line" id="L62"> } ** max_jobs,</span>
<span class="line" id="L63"> .next_job_index = <span class="tok-number">0</span>,</span>
<span class="line" id="L64"> .collected_result = {},</span>
<span class="line" id="L65"> };</span>
<span class="line" id="L66"> }</span>
<span class="line" id="L67"></span>
<span class="line" id="L68"> <span class="tok-comment">/// Add a frame to the Batch. If all jobs are in-flight, then this function</span></span>
<span class="line" id="L69"> <span class="tok-comment">/// waits until one completes.</span></span>
<span class="line" id="L70"> <span class="tok-comment">/// This function is *not* thread-safe. It must be called from one thread at</span></span>
<span class="line" id="L71"> <span class="tok-comment">/// a time, however, it need not be the same thread.</span></span>
<span class="line" id="L72"> <span class="tok-comment">/// TODO: "select" language feature to use the next available slot, rather than</span></span>
<span class="line" id="L73"> <span class="tok-comment">/// awaiting the next index.</span></span>
<span class="line" id="L74"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">add</span>(self: *Self, frame: <span class="tok-kw">anyframe</span>->Result) <span class="tok-type">void</span> {</span>
<span class="line" id="L75"> <span class="tok-kw">const</span> job = &self.jobs[self.next_job_index];</span>
<span class="line" id="L76"> self.next_job_index = (self.next_job_index + <span class="tok-number">1</span>) % max_jobs;</span>
<span class="line" id="L77"> <span class="tok-kw">if</span> (job.frame) |existing| {</span>
<span class="line" id="L78"> job.result = <span class="tok-kw">if</span> (async_ok) <span class="tok-kw">await</span> existing <span class="tok-kw">else</span> <span class="tok-kw">nosuspend</span> <span class="tok-kw">await</span> existing;</span>
<span class="line" id="L79"> <span class="tok-kw">if</span> (CollectedResult != <span class="tok-type">void</span>) {</span>
<span class="line" id="L80"> job.result <span class="tok-kw">catch</span> |err| {</span>
<span class="line" id="L81"> self.collected_result = err;</span>
<span class="line" id="L82"> };</span>
<span class="line" id="L83"> }</span>
<span class="line" id="L84"> }</span>
<span class="line" id="L85"> job.frame = frame;</span>
<span class="line" id="L86"> }</span>
<span class="line" id="L87"></span>
<span class="line" id="L88"> <span class="tok-comment">/// Wait for all the jobs to complete.</span></span>
<span class="line" id="L89"> <span class="tok-comment">/// Safe to call any number of times.</span></span>
<span class="line" id="L90"> <span class="tok-comment">/// If `Result` is an error union, this function returns the last error that occurred, if any.</span></span>
<span class="line" id="L91"> <span class="tok-comment">/// Unlike the `results` field, the return value of `wait` will report any error that occurred;</span></span>
<span class="line" id="L92"> <span class="tok-comment">/// hitting max parallelism will not compromise the result.</span></span>
<span class="line" id="L93"> <span class="tok-comment">/// This function is *not* thread-safe. It must be called from one thread at</span></span>
<span class="line" id="L94"> <span class="tok-comment">/// a time, however, it need not be the same thread.</span></span>
<span class="line" id="L95"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(self: *Self) CollectedResult {</span>
<span class="line" id="L96"> <span class="tok-kw">for</span> (self.jobs) |*job|</span>
<span class="line" id="L97"> <span class="tok-kw">if</span> (job.frame) |f| {</span>
<span class="line" id="L98"> job.result = <span class="tok-kw">if</span> (async_ok) <span class="tok-kw">await</span> f <span class="tok-kw">else</span> <span class="tok-kw">nosuspend</span> <span class="tok-kw">await</span> f;</span>
<span class="line" id="L99"> <span class="tok-kw">if</span> (CollectedResult != <span class="tok-type">void</span>) {</span>
<span class="line" id="L100"> job.result <span class="tok-kw">catch</span> |err| {</span>
<span class="line" id="L101"> self.collected_result = err;</span>
<span class="line" id="L102"> };</span>
<span class="line" id="L103"> }</span>
<span class="line" id="L104"> job.frame = <span class="tok-null">null</span>;</span>
<span class="line" id="L105"> };</span>
<span class="line" id="L106"> <span class="tok-kw">return</span> self.collected_result;</span>
<span class="line" id="L107"> }</span>
<span class="line" id="L108"> };</span>
<span class="line" id="L109">}</span>
<span class="line" id="L110"></span>
<span class="line" id="L111"><span class="tok-kw">test</span> <span class="tok-str">"std.event.Batch"</span> {</span>
<span class="line" id="L112"> <span class="tok-kw">if</span> (<span class="tok-null">true</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L113"> <span class="tok-kw">var</span> count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L114"> <span class="tok-kw">var</span> batch = Batch(<span class="tok-type">void</span>, <span class="tok-number">2</span>, .auto_async).init();</span>
<span class="line" id="L115"> batch.add(&<span class="tok-kw">async</span> sleepALittle(&count));</span>
<span class="line" id="L116"> batch.add(&<span class="tok-kw">async</span> increaseByTen(&count));</span>
<span class="line" id="L117"> batch.wait();</span>
<span class="line" id="L118"> <span class="tok-kw">try</span> testing.expect(count == <span class="tok-number">11</span>);</span>
<span class="line" id="L119"></span>
<span class="line" id="L120"> <span class="tok-kw">var</span> another = Batch(<span class="tok-type">anyerror</span>!<span class="tok-type">void</span>, <span class="tok-number">2</span>, .auto_async).init();</span>
<span class="line" id="L121"> another.add(&<span class="tok-kw">async</span> somethingElse());</span>
<span class="line" id="L122"> another.add(&<span class="tok-kw">async</span> doSomethingThatFails());</span>
<span class="line" id="L123"> <span class="tok-kw">try</span> testing.expectError(<span class="tok-kw">error</span>.ItBroke, another.wait());</span>
<span class="line" id="L124">}</span>
<span class="line" id="L125"></span>
<span class="line" id="L126"><span class="tok-kw">fn</span> <span class="tok-fn">sleepALittle</span>(count: *<span class="tok-type">usize</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L127"> std.time.sleep(<span class="tok-number">1</span> * std.time.ns_per_ms);</span>
<span class="line" id="L128"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, count, .Add, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L129">}</span>
<span class="line" id="L130"></span>
<span class="line" id="L131"><span class="tok-kw">fn</span> <span class="tok-fn">increaseByTen</span>(count: *<span class="tok-type">usize</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L132"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L133"> <span class="tok-kw">while</span> (i < <span class="tok-number">10</span>) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L134"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, count, .Add, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L135"> }</span>
<span class="line" id="L136">}</span>
<span class="line" id="L137"></span>
<span class="line" id="L138"><span class="tok-kw">fn</span> <span class="tok-fn">doSomethingThatFails</span>() <span class="tok-type">anyerror</span>!<span class="tok-type">void</span> {}</span>
<span class="line" id="L139"><span class="tok-kw">fn</span> <span class="tok-fn">somethingElse</span>() <span class="tok-type">anyerror</span>!<span class="tok-type">void</span> {</span>
<span class="line" id="L140"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ItBroke;</span>
<span class="line" id="L141">}</span>
<span class="line" id="L142"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> Loop = std.event.Loop;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L8"></span>
<span class="line" id="L9"><span class="tok-comment">/// Thread-safe async/await lock.</span></span>
<span class="line" id="L10"><span class="tok-comment">/// Functions which are waiting for the lock are suspended, and</span></span>
<span class="line" id="L11"><span class="tok-comment">/// are resumed when the lock is released, in order.</span></span>
<span class="line" id="L12"><span class="tok-comment">/// Many readers can hold the lock at the same time; however locking for writing is exclusive.</span></span>
<span class="line" id="L13"><span class="tok-comment">/// When a read lock is held, it will not be released until the reader queue is empty.</span></span>
<span class="line" id="L14"><span class="tok-comment">/// When a write lock is held, it will not be released until the writer queue is empty.</span></span>
<span class="line" id="L15"><span class="tok-comment">/// TODO: make this API also work in blocking I/O mode</span></span>
<span class="line" id="L16"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> RwLock = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L17"> shared_state: State,</span>
<span class="line" id="L18"> writer_queue: Queue,</span>
<span class="line" id="L19"> reader_queue: Queue,</span>
<span class="line" id="L20"> writer_queue_empty: <span class="tok-type">bool</span>,</span>
<span class="line" id="L21"> reader_queue_empty: <span class="tok-type">bool</span>,</span>
<span class="line" id="L22"> reader_lock_count: <span class="tok-type">usize</span>,</span>
<span class="line" id="L23"></span>
<span class="line" id="L24"> <span class="tok-kw">const</span> State = <span class="tok-kw">enum</span>(<span class="tok-type">u8</span>) {</span>
<span class="line" id="L25"> Unlocked,</span>
<span class="line" id="L26"> WriteLock,</span>
<span class="line" id="L27"> ReadLock,</span>
<span class="line" id="L28"> };</span>
<span class="line" id="L29"></span>
<span class="line" id="L30"> <span class="tok-kw">const</span> Queue = std.atomic.Queue(<span class="tok-kw">anyframe</span>);</span>
<span class="line" id="L31"></span>
<span class="line" id="L32"> <span class="tok-kw">const</span> global_event_loop = Loop.instance <span class="tok-kw">orelse</span></span>
<span class="line" id="L33"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"std.event.RwLock currently only works with event-based I/O"</span>);</span>
<span class="line" id="L34"></span>
<span class="line" id="L35"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> HeldRead = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L36"> lock: *RwLock,</span>
<span class="line" id="L37"></span>
<span class="line" id="L38"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">release</span>(self: HeldRead) <span class="tok-type">void</span> {</span>
<span class="line" id="L39"> <span class="tok-comment">// If other readers still hold the lock, we're done.</span>
</span>
<span class="line" id="L40"> <span class="tok-kw">if</span> (<span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &self.lock.reader_lock_count, .Sub, <span class="tok-number">1</span>, .SeqCst) != <span class="tok-number">1</span>) {</span>
<span class="line" id="L41"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L42"> }</span>
<span class="line" id="L43"></span>
<span class="line" id="L44"> <span class="tok-builtin">@atomicStore</span>(<span class="tok-type">bool</span>, &self.lock.reader_queue_empty, <span class="tok-null">true</span>, .SeqCst);</span>
<span class="line" id="L45"> <span class="tok-kw">if</span> (<span class="tok-builtin">@cmpxchgStrong</span>(State, &self.lock.shared_state, .ReadLock, .Unlocked, .SeqCst, .SeqCst) != <span class="tok-null">null</span>) {</span>
<span class="line" id="L46"> <span class="tok-comment">// Didn't unlock. Someone else's problem.</span>
</span>
<span class="line" id="L47"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L48"> }</span>
<span class="line" id="L49"></span>
<span class="line" id="L50"> self.lock.commonPostUnlock();</span>
<span class="line" id="L51"> }</span>
<span class="line" id="L52"> };</span>
<span class="line" id="L53"></span>
<span class="line" id="L54"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> HeldWrite = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L55"> lock: *RwLock,</span>
<span class="line" id="L56"></span>
<span class="line" id="L57"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">release</span>(self: HeldWrite) <span class="tok-type">void</span> {</span>
<span class="line" id="L58"> <span class="tok-comment">// See if we can leave it locked for writing, and pass the lock to the next writer</span>
</span>
<span class="line" id="L59"> <span class="tok-comment">// in the queue to grab the lock.</span>
</span>
<span class="line" id="L60"> <span class="tok-kw">if</span> (self.lock.writer_queue.get()) |node| {</span>
<span class="line" id="L61"> global_event_loop.onNextTick(node);</span>
<span class="line" id="L62"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L63"> }</span>
<span class="line" id="L64"></span>
<span class="line" id="L65"> <span class="tok-comment">// We need to release the write lock. Check if any readers are waiting to grab the lock.</span>
</span>
<span class="line" id="L66"> <span class="tok-kw">if</span> (!<span class="tok-builtin">@atomicLoad</span>(<span class="tok-type">bool</span>, &self.lock.reader_queue_empty, .SeqCst)) {</span>
<span class="line" id="L67"> <span class="tok-comment">// Switch to a read lock.</span>
</span>
<span class="line" id="L68"> <span class="tok-builtin">@atomicStore</span>(State, &self.lock.shared_state, .ReadLock, .SeqCst);</span>
<span class="line" id="L69"> <span class="tok-kw">while</span> (self.lock.reader_queue.get()) |node| {</span>
<span class="line" id="L70"> global_event_loop.onNextTick(node);</span>
<span class="line" id="L71"> }</span>
<span class="line" id="L72"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L73"> }</span>
<span class="line" id="L74"></span>
<span class="line" id="L75"> <span class="tok-builtin">@atomicStore</span>(<span class="tok-type">bool</span>, &self.lock.writer_queue_empty, <span class="tok-null">true</span>, .SeqCst);</span>
<span class="line" id="L76"> <span class="tok-builtin">@atomicStore</span>(State, &self.lock.shared_state, .Unlocked, .SeqCst);</span>
<span class="line" id="L77"></span>
<span class="line" id="L78"> self.lock.commonPostUnlock();</span>
<span class="line" id="L79"> }</span>
<span class="line" id="L80"> };</span>
<span class="line" id="L81"></span>
<span class="line" id="L82"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>() RwLock {</span>
<span class="line" id="L83"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L84"> .shared_state = .Unlocked,</span>
<span class="line" id="L85"> .writer_queue = Queue.init(),</span>
<span class="line" id="L86"> .writer_queue_empty = <span class="tok-null">true</span>,</span>
<span class="line" id="L87"> .reader_queue = Queue.init(),</span>
<span class="line" id="L88"> .reader_queue_empty = <span class="tok-null">true</span>,</span>
<span class="line" id="L89"> .reader_lock_count = <span class="tok-number">0</span>,</span>
<span class="line" id="L90"> };</span>
<span class="line" id="L91"> }</span>
<span class="line" id="L92"></span>
<span class="line" id="L93"> <span class="tok-comment">/// Must be called when not locked. Not thread safe.</span></span>
<span class="line" id="L94"> <span class="tok-comment">/// All calls to acquire() and release() must complete before calling deinit().</span></span>
<span class="line" id="L95"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *RwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L96"> assert(self.shared_state == .Unlocked);</span>
<span class="line" id="L97"> <span class="tok-kw">while</span> (self.writer_queue.get()) |node| <span class="tok-kw">resume</span> node.data;</span>
<span class="line" id="L98"> <span class="tok-kw">while</span> (self.reader_queue.get()) |node| <span class="tok-kw">resume</span> node.data;</span>
<span class="line" id="L99"> }</span>
<span class="line" id="L100"></span>
<span class="line" id="L101"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">acquireRead</span>(self: *RwLock) <span class="tok-kw">callconv</span>(.Async) HeldRead {</span>
<span class="line" id="L102"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &self.reader_lock_count, .Add, <span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L103"></span>
<span class="line" id="L104"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L105"> <span class="tok-kw">var</span> my_tick_node = Loop.NextTickNode{</span>
<span class="line" id="L106"> .data = <span class="tok-builtin">@frame</span>(),</span>
<span class="line" id="L107"> .prev = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L108"> .next = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L109"> };</span>
<span class="line" id="L110"></span>
<span class="line" id="L111"> self.reader_queue.put(&my_tick_node);</span>
<span class="line" id="L112"></span>
<span class="line" id="L113"> <span class="tok-comment">// At this point, we are in the reader_queue, so we might have already been resumed.</span>
</span>
<span class="line" id="L114"></span>
<span class="line" id="L115"> <span class="tok-comment">// We set this bit so that later we can rely on the fact, that if reader_queue_empty == true,</span>
</span>
<span class="line" id="L116"> <span class="tok-comment">// some actor will attempt to grab the lock.</span>
</span>
<span class="line" id="L117"> <span class="tok-builtin">@atomicStore</span>(<span class="tok-type">bool</span>, &self.reader_queue_empty, <span class="tok-null">false</span>, .SeqCst);</span>
<span class="line" id="L118"></span>
<span class="line" id="L119"> <span class="tok-comment">// Here we don't care if we are the one to do the locking or if it was already locked for reading.</span>
</span>
<span class="line" id="L120"> <span class="tok-kw">const</span> have_read_lock = <span class="tok-kw">if</span> (<span class="tok-builtin">@cmpxchgStrong</span>(State, &self.shared_state, .Unlocked, .ReadLock, .SeqCst, .SeqCst)) |old_state| old_state == .ReadLock <span class="tok-kw">else</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L121"> <span class="tok-kw">if</span> (have_read_lock) {</span>
<span class="line" id="L122"> <span class="tok-comment">// Give out all the read locks.</span>
</span>
<span class="line" id="L123"> <span class="tok-kw">if</span> (self.reader_queue.get()) |first_node| {</span>
<span class="line" id="L124"> <span class="tok-kw">while</span> (self.reader_queue.get()) |node| {</span>
<span class="line" id="L125"> global_event_loop.onNextTick(node);</span>
<span class="line" id="L126"> }</span>
<span class="line" id="L127"> <span class="tok-kw">resume</span> first_node.data;</span>
<span class="line" id="L128"> }</span>
<span class="line" id="L129"> }</span>
<span class="line" id="L130"> }</span>
<span class="line" id="L131"> <span class="tok-kw">return</span> HeldRead{ .lock = self };</span>
<span class="line" id="L132"> }</span>
<span class="line" id="L133"></span>
<span class="line" id="L134"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">acquireWrite</span>(self: *RwLock) <span class="tok-kw">callconv</span>(.Async) HeldWrite {</span>
<span class="line" id="L135"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L136"> <span class="tok-kw">var</span> my_tick_node = Loop.NextTickNode{</span>
<span class="line" id="L137"> .data = <span class="tok-builtin">@frame</span>(),</span>
<span class="line" id="L138"> .prev = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L139"> .next = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L140"> };</span>
<span class="line" id="L141"></span>
<span class="line" id="L142"> self.writer_queue.put(&my_tick_node);</span>
<span class="line" id="L143"></span>
<span class="line" id="L144"> <span class="tok-comment">// At this point, we are in the writer_queue, so we might have already been resumed.</span>
</span>
<span class="line" id="L145"></span>
<span class="line" id="L146"> <span class="tok-comment">// We set this bit so that later we can rely on the fact, that if writer_queue_empty == true,</span>
</span>
<span class="line" id="L147"> <span class="tok-comment">// some actor will attempt to grab the lock.</span>
</span>
<span class="line" id="L148"> <span class="tok-builtin">@atomicStore</span>(<span class="tok-type">bool</span>, &self.writer_queue_empty, <span class="tok-null">false</span>, .SeqCst);</span>
<span class="line" id="L149"></span>
<span class="line" id="L150"> <span class="tok-comment">// Here we must be the one to acquire the write lock. It cannot already be locked.</span>
</span>
<span class="line" id="L151"> <span class="tok-kw">if</span> (<span class="tok-builtin">@cmpxchgStrong</span>(State, &self.shared_state, .Unlocked, .WriteLock, .SeqCst, .SeqCst) == <span class="tok-null">null</span>) {</span>
<span class="line" id="L152"> <span class="tok-comment">// We now have a write lock.</span>
</span>
<span class="line" id="L153"> <span class="tok-kw">if</span> (self.writer_queue.get()) |node| {</span>
<span class="line" id="L154"> <span class="tok-comment">// Whether this node is us or someone else, we tail resume it.</span>
</span>
<span class="line" id="L155"> <span class="tok-kw">resume</span> node.data;</span>
<span class="line" id="L156"> }</span>
<span class="line" id="L157"> }</span>
<span class="line" id="L158"> }</span>
<span class="line" id="L159"> <span class="tok-kw">return</span> HeldWrite{ .lock = self };</span>
<span class="line" id="L160"> }</span>
<span class="line" id="L161"></span>
<span class="line" id="L162"> <span class="tok-kw">fn</span> <span class="tok-fn">commonPostUnlock</span>(self: *RwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L163"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L164"> <span class="tok-comment">// There might be a writer_queue item or a reader_queue item</span>
</span>
<span class="line" id="L165"> <span class="tok-comment">// If we check and both are empty, we can be done, because the other actors will try to</span>
</span>
<span class="line" id="L166"> <span class="tok-comment">// obtain the lock.</span>
</span>
<span class="line" id="L167"> <span class="tok-comment">// But if there's a writer_queue item or a reader_queue item,</span>
</span>
<span class="line" id="L168"> <span class="tok-comment">// we are the actor which must loop and attempt to grab the lock again.</span>
</span>
<span class="line" id="L169"> <span class="tok-kw">if</span> (!<span class="tok-builtin">@atomicLoad</span>(<span class="tok-type">bool</span>, &self.writer_queue_empty, .SeqCst)) {</span>
<span class="line" id="L170"> <span class="tok-kw">if</span> (<span class="tok-builtin">@cmpxchgStrong</span>(State, &self.shared_state, .Unlocked, .WriteLock, .SeqCst, .SeqCst) != <span class="tok-null">null</span>) {</span>
<span class="line" id="L171"> <span class="tok-comment">// We did not obtain the lock. Great, the queues are someone else's problem.</span>
</span>
<span class="line" id="L172"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L173"> }</span>
<span class="line" id="L174"> <span class="tok-comment">// If there's an item in the writer queue, give them the lock, and we're done.</span>
</span>
<span class="line" id="L175"> <span class="tok-kw">if</span> (self.writer_queue.get()) |node| {</span>
<span class="line" id="L176"> global_event_loop.onNextTick(node);</span>
<span class="line" id="L177"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L178"> }</span>
<span class="line" id="L179"> <span class="tok-comment">// Release the lock again.</span>
</span>
<span class="line" id="L180"> <span class="tok-builtin">@atomicStore</span>(<span class="tok-type">bool</span>, &self.writer_queue_empty, <span class="tok-null">true</span>, .SeqCst);</span>
<span class="line" id="L181"> <span class="tok-builtin">@atomicStore</span>(State, &self.shared_state, .Unlocked, .SeqCst);</span>
<span class="line" id="L182"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L183"> }</span>
<span class="line" id="L184"></span>
<span class="line" id="L185"> <span class="tok-kw">if</span> (!<span class="tok-builtin">@atomicLoad</span>(<span class="tok-type">bool</span>, &self.reader_queue_empty, .SeqCst)) {</span>
<span class="line" id="L186"> <span class="tok-kw">if</span> (<span class="tok-builtin">@cmpxchgStrong</span>(State, &self.shared_state, .Unlocked, .ReadLock, .SeqCst, .SeqCst) != <span class="tok-null">null</span>) {</span>
<span class="line" id="L187"> <span class="tok-comment">// We did not obtain the lock. Great, the queues are someone else's problem.</span>
</span>
<span class="line" id="L188"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L189"> }</span>
<span class="line" id="L190"> <span class="tok-comment">// If there are any items in the reader queue, give out all the reader locks, and we're done.</span>
</span>
<span class="line" id="L191"> <span class="tok-kw">if</span> (self.reader_queue.get()) |first_node| {</span>
<span class="line" id="L192"> global_event_loop.onNextTick(first_node);</span>
<span class="line" id="L193"> <span class="tok-kw">while</span> (self.reader_queue.get()) |node| {</span>
<span class="line" id="L194"> global_event_loop.onNextTick(node);</span>
<span class="line" id="L195"> }</span>
<span class="line" id="L196"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L197"> }</span>
<span class="line" id="L198"> <span class="tok-comment">// Release the lock again.</span>
</span>
<span class="line" id="L199"> <span class="tok-builtin">@atomicStore</span>(<span class="tok-type">bool</span>, &self.reader_queue_empty, <span class="tok-null">true</span>, .SeqCst);</span>
<span class="line" id="L200"> <span class="tok-kw">if</span> (<span class="tok-builtin">@cmpxchgStrong</span>(State, &self.shared_state, .ReadLock, .Unlocked, .SeqCst, .SeqCst) != <span class="tok-null">null</span>) {</span>
<span class="line" id="L201"> <span class="tok-comment">// Didn't unlock. Someone else's problem.</span>
</span>
<span class="line" id="L202"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L203"> }</span>
<span class="line" id="L204"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L205"> }</span>
<span class="line" id="L206"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L207"> }</span>
<span class="line" id="L208"> }</span>
<span class="line" id="L209">};</span>
<span class="line" id="L210"></span>
<span class="line" id="L211"><span class="tok-kw">test</span> <span class="tok-str">"std.event.RwLock"</span> {</span>
<span class="line" id="L212"> <span class="tok-comment">// https://github.com/ziglang/zig/issues/2377</span>
</span>
<span class="line" id="L213"> <span class="tok-kw">if</span> (<span class="tok-null">true</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L214"></span>
<span class="line" id="L215"> <span class="tok-comment">// https://github.com/ziglang/zig/issues/1908</span>
</span>
<span class="line" id="L216"> <span class="tok-kw">if</span> (builtin.single_threaded) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L217"></span>
<span class="line" id="L218"> <span class="tok-comment">// TODO provide a way to run tests in evented I/O mode</span>
</span>
<span class="line" id="L219"> <span class="tok-kw">if</span> (!std.io.is_async) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L220"></span>
<span class="line" id="L221"> <span class="tok-kw">var</span> lock = RwLock.init();</span>
<span class="line" id="L222"> <span class="tok-kw">defer</span> lock.deinit();</span>
<span class="line" id="L223"></span>
<span class="line" id="L224"> _ = testLock(std.heap.page_allocator, &lock);</span>
<span class="line" id="L225"></span>
<span class="line" id="L226"> <span class="tok-kw">const</span> expected_result = [<span class="tok-number">1</span>]<span class="tok-type">i32</span>{shared_it_count * <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(shared_test_data.len))} ** shared_test_data.len;</span>
<span class="line" id="L227"> <span class="tok-kw">try</span> testing.expectEqualSlices(<span class="tok-type">i32</span>, expected_result, shared_test_data);</span>
<span class="line" id="L228">}</span>
<span class="line" id="L229"><span class="tok-kw">fn</span> <span class="tok-fn">testLock</span>(allocator: Allocator, lock: *RwLock) <span class="tok-kw">callconv</span>(.Async) <span class="tok-type">void</span> {</span>
<span class="line" id="L230"> <span class="tok-kw">var</span> read_nodes: [<span class="tok-number">100</span>]Loop.NextTickNode = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L231"> <span class="tok-kw">for</span> (read_nodes) |*read_node| {</span>
<span class="line" id="L232"> <span class="tok-kw">const</span> frame = allocator.create(<span class="tok-builtin">@Frame</span>(readRunner)) <span class="tok-kw">catch</span> <span class="tok-builtin">@panic</span>(<span class="tok-str">"memory"</span>);</span>
<span class="line" id="L233"> read_node.data = frame;</span>
<span class="line" id="L234"> frame.* = <span class="tok-kw">async</span> readRunner(lock);</span>
<span class="line" id="L235"> Loop.instance.?.onNextTick(read_node);</span>
<span class="line" id="L236"> }</span>
<span class="line" id="L237"></span>
<span class="line" id="L238"> <span class="tok-kw">var</span> write_nodes: [shared_it_count]Loop.NextTickNode = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L239"> <span class="tok-kw">for</span> (write_nodes) |*write_node| {</span>
<span class="line" id="L240"> <span class="tok-kw">const</span> frame = allocator.create(<span class="tok-builtin">@Frame</span>(writeRunner)) <span class="tok-kw">catch</span> <span class="tok-builtin">@panic</span>(<span class="tok-str">"memory"</span>);</span>
<span class="line" id="L241"> write_node.data = frame;</span>
<span class="line" id="L242"> frame.* = <span class="tok-kw">async</span> writeRunner(lock);</span>
<span class="line" id="L243"> Loop.instance.?.onNextTick(write_node);</span>
<span class="line" id="L244"> }</span>
<span class="line" id="L245"></span>
<span class="line" id="L246"> <span class="tok-kw">for</span> (write_nodes) |*write_node| {</span>
<span class="line" id="L247"> <span class="tok-kw">const</span> casted = <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> <span class="tok-builtin">@Frame</span>(writeRunner), <span class="tok-builtin">@ptrCast</span>(write_node.data));</span>
<span class="line" id="L248"> <span class="tok-kw">await</span> casted;</span>
<span class="line" id="L249"> allocator.destroy(casted);</span>
<span class="line" id="L250"> }</span>
<span class="line" id="L251"> <span class="tok-kw">for</span> (read_nodes) |*read_node| {</span>
<span class="line" id="L252"> <span class="tok-kw">const</span> casted = <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> <span class="tok-builtin">@Frame</span>(readRunner), <span class="tok-builtin">@ptrCast</span>(read_node.data));</span>
<span class="line" id="L253"> <span class="tok-kw">await</span> casted;</span>
<span class="line" id="L254"> allocator.destroy(casted);</span>
<span class="line" id="L255"> }</span>
<span class="line" id="L256">}</span>
<span class="line" id="L257"></span>
<span class="line" id="L258"><span class="tok-kw">const</span> shared_it_count = <span class="tok-number">10</span>;</span>
<span class="line" id="L259"><span class="tok-kw">var</span> shared_test_data = [<span class="tok-number">1</span>]<span class="tok-type">i32</span>{<span class="tok-number">0</span>} ** <span class="tok-number">10</span>;</span>
<span class="line" id="L260"><span class="tok-kw">var</span> shared_test_index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L261"><span class="tok-kw">var</span> shared_count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L262"><span class="tok-kw">fn</span> <span class="tok-fn">writeRunner</span>(lock: *RwLock) <span class="tok-kw">callconv</span>(.Async) <span class="tok-type">void</span> {</span>
<span class="line" id="L263"> <span class="tok-kw">suspend</span> {} <span class="tok-comment">// resumed by onNextTick</span>
</span>
<span class="line" id="L264"></span>
<span class="line" id="L265"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L266"> <span class="tok-kw">while</span> (i < shared_test_data.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L267"> std.time.sleep(<span class="tok-number">100</span> * std.time.microsecond);</span>
<span class="line" id="L268"> <span class="tok-kw">const</span> lock_promise = <span class="tok-kw">async</span> lock.acquireWrite();</span>
<span class="line" id="L269"> <span class="tok-kw">const</span> handle = <span class="tok-kw">await</span> lock_promise;</span>
<span class="line" id="L270"> <span class="tok-kw">defer</span> handle.release();</span>
<span class="line" id="L271"></span>
<span class="line" id="L272"> shared_count += <span class="tok-number">1</span>;</span>
<span class="line" id="L273"> <span class="tok-kw">while</span> (shared_test_index < shared_test_data.len) : (shared_test_index += <span class="tok-number">1</span>) {</span>
<span class="line" id="L274"> shared_test_data[shared_test_index] = shared_test_data[shared_test_index] + <span class="tok-number">1</span>;</span>
<span class="line" id="L275"> }</span>
<span class="line" id="L276"> shared_test_index = <span class="tok-number">0</span>;</span>
<span class="line" id="L277"> }</span>
<span class="line" id="L278">}</span>
<span class="line" id="L279"><span class="tok-kw">fn</span> <span class="tok-fn">readRunner</span>(lock: *RwLock) <span class="tok-kw">callconv</span>(.Async) <span class="tok-type">void</span> {</span>
<span class="line" id="L280"> <span class="tok-kw">suspend</span> {} <span class="tok-comment">// resumed by onNextTick</span>
</span>
<span class="line" id="L281"> std.time.sleep(<span class="tok-number">1</span>);</span>
<span class="line" id="L282"></span>
<span class="line" id="L283"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L284"> <span class="tok-kw">while</span> (i < shared_test_data.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L285"> <span class="tok-kw">const</span> lock_promise = <span class="tok-kw">async</span> lock.acquireRead();</span>
<span class="line" id="L286"> <span class="tok-kw">const</span> handle = <span class="tok-kw">await</span> lock_promise;</span>
<span class="line" id="L287"> <span class="tok-kw">defer</span> handle.release();</span>
<span class="line" id="L288"></span>
<span class="line" id="L289"> <span class="tok-kw">try</span> testing.expect(shared_test_index == <span class="tok-number">0</span>);</span>
<span class="line" id="L290"> <span class="tok-kw">try</span> testing.expect(shared_test_data[i] == <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(shared_count)));</span>
<span class="line" id="L291"> }</span>
<span class="line" id="L292">}</span>
<span class="line" id="L293"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> Lock = std.event.Lock;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-comment">/// This is a value that starts out unavailable, until resolve() is called</span></span>
<span class="line" id="L8"><span class="tok-comment">/// While it is unavailable, functions suspend when they try to get() it,</span></span>
<span class="line" id="L9"><span class="tok-comment">/// and then are resumed when resolve() is called.</span></span>
<span class="line" id="L10"><span class="tok-comment">/// At this point the value remains forever available, and another resolve() is not allowed.</span></span>
<span class="line" id="L11"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">Future</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L12"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L13"> lock: Lock,</span>
<span class="line" id="L14"> data: T,</span>
<span class="line" id="L15"> available: Available,</span>
<span class="line" id="L16"></span>
<span class="line" id="L17"> <span class="tok-kw">const</span> Available = <span class="tok-kw">enum</span>(<span class="tok-type">u8</span>) {</span>
<span class="line" id="L18"> NotStarted,</span>
<span class="line" id="L19"> Started,</span>
<span class="line" id="L20"> Finished,</span>
<span class="line" id="L21"> };</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L24"> <span class="tok-kw">const</span> Queue = std.atomic.Queue(<span class="tok-kw">anyframe</span>);</span>
<span class="line" id="L25"></span>
<span class="line" id="L26"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>() Self {</span>
<span class="line" id="L27"> <span class="tok-kw">return</span> Self{</span>
<span class="line" id="L28"> .lock = Lock.initLocked(),</span>
<span class="line" id="L29"> .available = .NotStarted,</span>
<span class="line" id="L30"> .data = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L31"> };</span>
<span class="line" id="L32"> }</span>
<span class="line" id="L33"></span>
<span class="line" id="L34"> <span class="tok-comment">/// Obtain the value. If it's not available, wait until it becomes</span></span>
<span class="line" id="L35"> <span class="tok-comment">/// available.</span></span>
<span class="line" id="L36"> <span class="tok-comment">/// Thread-safe.</span></span>
<span class="line" id="L37"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">get</span>(self: *Self) <span class="tok-kw">callconv</span>(.Async) *T {</span>
<span class="line" id="L38"> <span class="tok-kw">if</span> (<span class="tok-builtin">@atomicLoad</span>(Available, &self.available, .SeqCst) == .Finished) {</span>
<span class="line" id="L39"> <span class="tok-kw">return</span> &self.data;</span>
<span class="line" id="L40"> }</span>
<span class="line" id="L41"> <span class="tok-kw">const</span> held = self.lock.acquire();</span>
<span class="line" id="L42"> held.release();</span>
<span class="line" id="L43"></span>
<span class="line" id="L44"> <span class="tok-kw">return</span> &self.data;</span>
<span class="line" id="L45"> }</span>
<span class="line" id="L46"></span>
<span class="line" id="L47"> <span class="tok-comment">/// Gets the data without waiting for it. If it's available, a pointer is</span></span>
<span class="line" id="L48"> <span class="tok-comment">/// returned. Otherwise, null is returned.</span></span>
<span class="line" id="L49"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getOrNull</span>(self: *Self) ?*T {</span>
<span class="line" id="L50"> <span class="tok-kw">if</span> (<span class="tok-builtin">@atomicLoad</span>(Available, &self.available, .SeqCst) == .Finished) {</span>
<span class="line" id="L51"> <span class="tok-kw">return</span> &self.data;</span>
<span class="line" id="L52"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L53"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L54"> }</span>
<span class="line" id="L55"> }</span>
<span class="line" id="L56"></span>
<span class="line" id="L57"> <span class="tok-comment">/// If someone else has started working on the data, wait for them to complete</span></span>
<span class="line" id="L58"> <span class="tok-comment">/// and return a pointer to the data. Otherwise, return null, and the caller</span></span>
<span class="line" id="L59"> <span class="tok-comment">/// should start working on the data.</span></span>
<span class="line" id="L60"> <span class="tok-comment">/// It's not required to call start() before resolve() but it can be useful since</span></span>
<span class="line" id="L61"> <span class="tok-comment">/// this method is thread-safe.</span></span>
<span class="line" id="L62"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">start</span>(self: *Self) <span class="tok-kw">callconv</span>(.Async) ?*T {</span>
<span class="line" id="L63"> <span class="tok-kw">const</span> state = <span class="tok-builtin">@cmpxchgStrong</span>(Available, &self.available, .NotStarted, .Started, .SeqCst, .SeqCst) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L64"> <span class="tok-kw">switch</span> (state) {</span>
<span class="line" id="L65"> .Started => {</span>
<span class="line" id="L66"> <span class="tok-kw">const</span> held = self.lock.acquire();</span>
<span class="line" id="L67"> held.release();</span>
<span class="line" id="L68"> <span class="tok-kw">return</span> &self.data;</span>
<span class="line" id="L69"> },</span>
<span class="line" id="L70"> .Finished => <span class="tok-kw">return</span> &self.data,</span>
<span class="line" id="L71"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L72"> }</span>
<span class="line" id="L73"> }</span>
<span class="line" id="L74"></span>
<span class="line" id="L75"> <span class="tok-comment">/// Make the data become available. May be called only once.</span></span>
<span class="line" id="L76"> <span class="tok-comment">/// Before calling this, modify the `data` property.</span></span>
<span class="line" id="L77"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">resolve</span>(self: *Self) <span class="tok-type">void</span> {</span>
<span class="line" id="L78"> <span class="tok-kw">const</span> prev = <span class="tok-builtin">@atomicRmw</span>(Available, &self.available, .Xchg, .Finished, .SeqCst);</span>
<span class="line" id="L79"> assert(prev != .Finished); <span class="tok-comment">// resolve() called twice</span>
</span>
<span class="line" id="L80"> Lock.Held.release(Lock.Held{ .lock = &self.lock });</span>
<span class="line" id="L81"> }</span>
<span class="line" id="L82"> };</span>
<span class="line" id="L83">}</span>
<span class="line" id="L84"></span>
<span class="line" id="L85"><span class="tok-kw">test</span> <span class="tok-str">"std.event.Future"</span> {</span>
<span class="line" id="L86"> <span class="tok-comment">// https://github.com/ziglang/zig/issues/1908</span>
</span>
<span class="line" id="L87"> <span class="tok-kw">if</span> (builtin.single_threaded) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L88"> <span class="tok-comment">// https://github.com/ziglang/zig/issues/3251</span>
</span>
<span class="line" id="L89"> <span class="tok-kw">if</span> (builtin.os.tag == .freebsd) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L90"> <span class="tok-comment">// TODO provide a way to run tests in evented I/O mode</span>
</span>
<span class="line" id="L91"> <span class="tok-kw">if</span> (!std.io.is_async) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L92"></span>
<span class="line" id="L93"> testFuture();</span>
<span class="line" id="L94">}</span>
<span class="line" id="L95"></span>
<span class="line" id="L96"><span class="tok-kw">fn</span> <span class="tok-fn">testFuture</span>() <span class="tok-type">void</span> {</span>
<span class="line" id="L97"> <span class="tok-kw">var</span> future = Future(<span class="tok-type">i32</span>).init();</span>
<span class="line" id="L98"></span>
<span class="line" id="L99"> <span class="tok-kw">var</span> a = <span class="tok-kw">async</span> waitOnFuture(&future);</span>
<span class="line" id="L100"> <span class="tok-kw">var</span> b = <span class="tok-kw">async</span> waitOnFuture(&future);</span>
<span class="line" id="L101"> resolveFuture(&future);</span>
<span class="line" id="L102"></span>
<span class="line" id="L103"> <span class="tok-kw">const</span> result = (<span class="tok-kw">await</span> a) + (<span class="tok-kw">await</span> b);</span>
<span class="line" id="L104"></span>
<span class="line" id="L105"> <span class="tok-kw">try</span> testing.expect(result == <span class="tok-number">12</span>);</span>
<span class="line" id="L106">}</span>
<span class="line" id="L107"></span>
<span class="line" id="L108"><span class="tok-kw">fn</span> <span class="tok-fn">waitOnFuture</span>(future: *Future(<span class="tok-type">i32</span>)) <span class="tok-type">i32</span> {</span>
<span class="line" id="L109"> <span class="tok-kw">return</span> future.get().*;</span>
<span class="line" id="L110">}</span>
<span class="line" id="L111"></span>
<span class="line" id="L112"><span class="tok-kw">fn</span> <span class="tok-fn">resolveFuture</span>(future: *Future(<span class="tok-type">i32</span>)) <span class="tok-type">void</span> {</span>
<span class="line" id="L113"> future.data = <span class="tok-number">6</span>;</span>
<span class="line" id="L114"> future.resolve();</span>
<span class="line" id="L115">}</span>
<span class="line" id="L116"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/event/locked.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> Lock = std.event.Lock;</span>
<span class="line" id="L3"></span>
<span class="line" id="L4"><span class="tok-comment">/// Thread-safe async/await lock that protects one piece of data.</span></span>
<span class="line" id="L5"><span class="tok-comment">/// Functions which are waiting for the lock are suspended, and</span></span>
<span class="line" id="L6"><span class="tok-comment">/// are resumed when the lock is released, in order.</span></span>
<span class="line" id="L7"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">Locked</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L8"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L9"> lock: Lock,</span>
<span class="line" id="L10"> private_data: T,</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L13"></span>
<span class="line" id="L14"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> HeldLock = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L15"> value: *T,</span>
<span class="line" id="L16"> held: Lock.Held,</span>
<span class="line" id="L17"></span>
<span class="line" id="L18"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">release</span>(self: HeldLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L19"> self.held.release();</span>
<span class="line" id="L20"> }</span>
<span class="line" id="L21"> };</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(data: T) Self {</span>
<span class="line" id="L24"> <span class="tok-kw">return</span> Self{</span>
<span class="line" id="L25"> .lock = .{},</span>
<span class="line" id="L26"> .private_data = data,</span>
<span class="line" id="L27"> };</span>
<span class="line" id="L28"> }</span>
<span class="line" id="L29"></span>
<span class="line" id="L30"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *Self) <span class="tok-type">void</span> {</span>
<span class="line" id="L31"> self.lock.deinit();</span>
<span class="line" id="L32"> }</span>
<span class="line" id="L33"></span>
<span class="line" id="L34"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">acquire</span>(self: *Self) <span class="tok-kw">callconv</span>(.Async) HeldLock {</span>
<span class="line" id="L35"> <span class="tok-kw">return</span> HeldLock{</span>
<span class="line" id="L36"> <span class="tok-comment">// TODO guaranteed allocation elision</span>
</span>
<span class="line" id="L37"> .held = self.lock.acquire(),</span>
<span class="line" id="L38"> .value = &self.private_data,</span>
<span class="line" id="L39"> };</span>
<span class="line" id="L40"> }</span>
<span class="line" id="L41"> };</span>
<span class="line" id="L42">}</span>
<span class="line" id="L43"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/event/lock.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> Loop = std.event.Loop;</span>
<span class="line" id="L7"></span>
<span class="line" id="L8"><span class="tok-comment">/// Thread-safe async/await lock.</span></span>
<span class="line" id="L9"><span class="tok-comment">/// Functions which are waiting for the lock are suspended, and</span></span>
<span class="line" id="L10"><span class="tok-comment">/// are resumed when the lock is released, in order.</span></span>
<span class="line" id="L11"><span class="tok-comment">/// Allows only one actor to hold the lock.</span></span>
<span class="line" id="L12"><span class="tok-comment">/// TODO: make this API also work in blocking I/O mode.</span></span>
<span class="line" id="L13"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Lock = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L14"> mutex: std.Thread.Mutex = std.Thread.Mutex{},</span>
<span class="line" id="L15"> head: <span class="tok-type">usize</span> = UNLOCKED,</span>
<span class="line" id="L16"></span>
<span class="line" id="L17"> <span class="tok-kw">const</span> UNLOCKED = <span class="tok-number">0</span>;</span>
<span class="line" id="L18"> <span class="tok-kw">const</span> LOCKED = <span class="tok-number">1</span>;</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"> <span class="tok-kw">const</span> global_event_loop = Loop.instance <span class="tok-kw">orelse</span></span>
<span class="line" id="L21"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"std.event.Lock currently only works with event-based I/O"</span>);</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"> <span class="tok-kw">const</span> Waiter = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L24"> <span class="tok-comment">// forced Waiter alignment to ensure it doesn't clash with LOCKED</span>
</span>
<span class="line" id="L25"> next: ?*Waiter <span class="tok-kw">align</span>(<span class="tok-number">2</span>),</span>
<span class="line" id="L26"> tail: *Waiter,</span>
<span class="line" id="L27"> node: Loop.NextTickNode,</span>
<span class="line" id="L28"> };</span>
<span class="line" id="L29"></span>
<span class="line" id="L30"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">initLocked</span>() Lock {</span>
<span class="line" id="L31"> <span class="tok-kw">return</span> Lock{ .head = LOCKED };</span>
<span class="line" id="L32"> }</span>
<span class="line" id="L33"></span>
<span class="line" id="L34"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">acquire</span>(self: *Lock) Held {</span>
<span class="line" id="L35"> self.mutex.lock();</span>
<span class="line" id="L36"></span>
<span class="line" id="L37"> <span class="tok-comment">// self.head transitions from multiple stages depending on the value:</span>
</span>
<span class="line" id="L38"> <span class="tok-comment">// UNLOCKED -> LOCKED:</span>
</span>
<span class="line" id="L39"> <span class="tok-comment">// acquire Lock ownership when there are no waiters</span>
</span>
<span class="line" id="L40"> <span class="tok-comment">// LOCKED -> <Waiter head ptr>:</span>
</span>
<span class="line" id="L41"> <span class="tok-comment">// Lock is already owned, enqueue first Waiter</span>
</span>
<span class="line" id="L42"> <span class="tok-comment">// <head ptr> -> <head ptr>:</span>
</span>
<span class="line" id="L43"> <span class="tok-comment">// Lock is owned with pending waiters. Push our waiter to the queue.</span>
</span>
<span class="line" id="L44"></span>
<span class="line" id="L45"> <span class="tok-kw">if</span> (self.head == UNLOCKED) {</span>
<span class="line" id="L46"> self.head = LOCKED;</span>
<span class="line" id="L47"> self.mutex.unlock();</span>
<span class="line" id="L48"> <span class="tok-kw">return</span> Held{ .lock = self };</span>
<span class="line" id="L49"> }</span>
<span class="line" id="L50"></span>
<span class="line" id="L51"> <span class="tok-kw">var</span> waiter: Waiter = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L52"> waiter.next = <span class="tok-null">null</span>;</span>
<span class="line" id="L53"> waiter.tail = &waiter;</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"> <span class="tok-kw">const</span> head = <span class="tok-kw">switch</span> (self.head) {</span>
<span class="line" id="L56"> UNLOCKED => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L57"> LOCKED => <span class="tok-null">null</span>,</span>
<span class="line" id="L58"> <span class="tok-kw">else</span> => <span class="tok-builtin">@as</span>(*Waiter, <span class="tok-builtin">@ptrFromInt</span>(self.head)),</span>
<span class="line" id="L59"> };</span>
<span class="line" id="L60"></span>
<span class="line" id="L61"> <span class="tok-kw">if</span> (head) |h| {</span>
<span class="line" id="L62"> h.tail.next = &waiter;</span>
<span class="line" id="L63"> h.tail = &waiter;</span>
<span class="line" id="L64"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L65"> self.head = <span class="tok-builtin">@intFromPtr</span>(&waiter);</span>
<span class="line" id="L66"> }</span>
<span class="line" id="L67"></span>
<span class="line" id="L68"> <span class="tok-kw">suspend</span> {</span>
<span class="line" id="L69"> waiter.node = Loop.NextTickNode{</span>
<span class="line" id="L70"> .prev = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L71"> .next = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L72"> .data = <span class="tok-builtin">@frame</span>(),</span>
<span class="line" id="L73"> };</span>
<span class="line" id="L74"> self.mutex.unlock();</span>
<span class="line" id="L75"> }</span>
<span class="line" id="L76"></span>
<span class="line" id="L77"> <span class="tok-kw">return</span> Held{ .lock = self };</span>
<span class="line" id="L78"> }</span>
<span class="line" id="L79"></span>
<span class="line" id="L80"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Held = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L81"> lock: *Lock,</span>
<span class="line" id="L82"></span>
<span class="line" id="L83"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">release</span>(self: Held) <span class="tok-type">void</span> {</span>
<span class="line" id="L84"> <span class="tok-kw">const</span> waiter = blk: {</span>
<span class="line" id="L85"> self.lock.mutex.lock();</span>
<span class="line" id="L86"> <span class="tok-kw">defer</span> self.lock.mutex.unlock();</span>
<span class="line" id="L87"></span>
<span class="line" id="L88"> <span class="tok-comment">// self.head goes through the reverse transition from acquire():</span>
</span>
<span class="line" id="L89"> <span class="tok-comment">// <head ptr> -> <new head ptr>:</span>
</span>
<span class="line" id="L90"> <span class="tok-comment">// pop a waiter from the queue to give Lock ownership when there are still others pending</span>
</span>
<span class="line" id="L91"> <span class="tok-comment">// <head ptr> -> LOCKED:</span>
</span>
<span class="line" id="L92"> <span class="tok-comment">// pop the laster waiter from the queue, while also giving it lock ownership when awaken</span>
</span>
<span class="line" id="L93"> <span class="tok-comment">// LOCKED -> UNLOCKED:</span>
</span>
<span class="line" id="L94"> <span class="tok-comment">// last lock owner releases lock while no one else is waiting for it</span>
</span>
<span class="line" id="L95"></span>
<span class="line" id="L96"> <span class="tok-kw">switch</span> (self.lock.head) {</span>
<span class="line" id="L97"> UNLOCKED => {</span>
<span class="line" id="L98"> <span class="tok-kw">unreachable</span>; <span class="tok-comment">// Lock unlocked while unlocking</span>
</span>
<span class="line" id="L99"> },</span>
<span class="line" id="L100"> LOCKED => {</span>
<span class="line" id="L101"> self.lock.head = UNLOCKED;</span>
<span class="line" id="L102"> <span class="tok-kw">break</span> :blk <span class="tok-null">null</span>;</span>
<span class="line" id="L103"> },</span>
<span class="line" id="L104"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L105"> <span class="tok-kw">const</span> waiter = <span class="tok-builtin">@as</span>(*Waiter, <span class="tok-builtin">@ptrFromInt</span>(self.lock.head));</span>
<span class="line" id="L106"> self.lock.head = <span class="tok-kw">if</span> (waiter.next == <span class="tok-null">null</span>) LOCKED <span class="tok-kw">else</span> <span class="tok-builtin">@intFromPtr</span>(waiter.next);</span>
<span class="line" id="L107"> <span class="tok-kw">if</span> (waiter.next) |next|</span>
<span class="line" id="L108"> next.tail = waiter.tail;</span>
<span class="line" id="L109"> <span class="tok-kw">break</span> :blk waiter;</span>
<span class="line" id="L110"> },</span>
<span class="line" id="L111"> }</span>
<span class="line" id="L112"> };</span>
<span class="line" id="L113"></span>
<span class="line" id="L114"> <span class="tok-kw">if</span> (waiter) |w| {</span>
<span class="line" id="L115"> global_event_loop.onNextTick(&w.node);</span>
<span class="line" id="L116"> }</span>
<span class="line" id="L117"> }</span>
<span class="line" id="L118"> };</span>
<span class="line" id="L119">};</span>
<span class="line" id="L120"></span>
<span class="line" id="L121"><span class="tok-kw">test</span> <span class="tok-str">"std.event.Lock"</span> {</span>
<span class="line" id="L122"> <span class="tok-kw">if</span> (!std.io.is_async) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L123"></span>
<span class="line" id="L124"> <span class="tok-comment">// TODO https://github.com/ziglang/zig/issues/1908</span>
</span>
<span class="line" id="L125"> <span class="tok-kw">if</span> (builtin.single_threaded) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L126"></span>
<span class="line" id="L127"> <span class="tok-comment">// TODO https://github.com/ziglang/zig/issues/3251</span>
</span>
<span class="line" id="L128"> <span class="tok-kw">if</span> (builtin.os.tag == .freebsd) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L129"></span>
<span class="line" id="L130"> <span class="tok-kw">var</span> lock = Lock{};</span>
<span class="line" id="L131"> testLock(&lock);</span>
<span class="line" id="L132"></span>
<span class="line" id="L133"> <span class="tok-kw">const</span> expected_result = [<span class="tok-number">1</span>]<span class="tok-type">i32</span>{<span class="tok-number">3</span> * <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(shared_test_data.len))} ** shared_test_data.len;</span>
<span class="line" id="L134"> <span class="tok-kw">try</span> testing.expectEqualSlices(<span class="tok-type">i32</span>, &expected_result, &shared_test_data);</span>
<span class="line" id="L135">}</span>
<span class="line" id="L136"><span class="tok-kw">fn</span> <span class="tok-fn">testLock</span>(lock: *Lock) <span class="tok-type">void</span> {</span>
<span class="line" id="L137"> <span class="tok-kw">var</span> handle1 = <span class="tok-kw">async</span> lockRunner(lock);</span>
<span class="line" id="L138"> <span class="tok-kw">var</span> handle2 = <span class="tok-kw">async</span> lockRunner(lock);</span>
<span class="line" id="L139"> <span class="tok-kw">var</span> handle3 = <span class="tok-kw">async</span> lockRunner(lock);</span>
<span class="line" id="L140"></span>
<span class="line" id="L141"> <span class="tok-kw">await</span> handle1;</span>
<span class="line" id="L142"> <span class="tok-kw">await</span> handle2;</span>
<span class="line" id="L143"> <span class="tok-kw">await</span> handle3;</span>
<span class="line" id="L144">}</span>
<span class="line" id="L145"></span>
<span class="line" id="L146"><span class="tok-kw">var</span> shared_test_data = [<span class="tok-number">1</span>]<span class="tok-type">i32</span>{<span class="tok-number">0</span>} ** <span class="tok-number">10</span>;</span>
<span class="line" id="L147"><span class="tok-kw">var</span> shared_test_index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L148"></span>
<span class="line" id="L149"><span class="tok-kw">fn</span> <span class="tok-fn">lockRunner</span>(lock: *Lock) <span class="tok-type">void</span> {</span>
<span class="line" id="L150"> Lock.global_event_loop.yield();</span>
<span class="line" id="L151"></span>
<span class="line" id="L152"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L153"> <span class="tok-kw">while</span> (i < shared_test_data.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L154"> <span class="tok-kw">const</span> handle = lock.acquire();</span>
<span class="line" id="L155"> <span class="tok-kw">defer</span> handle.release();</span>
<span class="line" id="L156"></span>
<span class="line" id="L157"> shared_test_index = <span class="tok-number">0</span>;</span>
<span class="line" id="L158"> <span class="tok-kw">while</span> (shared_test_index < shared_test_data.len) : (shared_test_index += <span class="tok-number">1</span>) {</span>
<span class="line" id="L159"> shared_test_data[shared_test_index] = shared_test_data[shared_test_index] + <span class="tok-number">1</span>;</span>
<span class="line" id="L160"> }</span>
<span class="line" id="L161"> }</span>
<span class="line" id="L162">}</span>
<span class="line" id="L163"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> http = std.http;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> net = std.net;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> Uri = std.Uri;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> Allocator = mem.Allocator;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L9"></span>
<span class="line" id="L10"><span class="tok-kw">const</span> Server = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L11"><span class="tok-kw">const</span> proto = <span class="tok-builtin">@import</span>(<span class="tok-str">"protocol.zig"</span>);</span>
<span class="line" id="L12"></span>
<span class="line" id="L13">allocator: Allocator,</span>
<span class="line" id="L14"></span>
<span class="line" id="L15">socket: net.StreamServer,</span>
<span class="line" id="L16"></span>
<span class="line" id="L17"><span class="tok-comment">/// An interface to either a plain or TLS connection.</span></span>
<span class="line" id="L18"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Connection = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L19"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> buffer_size = std.crypto.tls.max_ciphertext_record_len;</span>
<span class="line" id="L20"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Protocol = <span class="tok-kw">enum</span> { plain };</span>
<span class="line" id="L21"></span>
<span class="line" id="L22"> stream: net.Stream,</span>
<span class="line" id="L23"> protocol: Protocol,</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"> closing: <span class="tok-type">bool</span> = <span class="tok-null">true</span>,</span>
<span class="line" id="L26"></span>
<span class="line" id="L27"> read_buf: [buffer_size]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L28"> read_start: <span class="tok-type">u16</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L29"> read_end: <span class="tok-type">u16</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L30"></span>
<span class="line" id="L31"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">rawReadAtLeast</span>(conn: *Connection, buffer: []<span class="tok-type">u8</span>, len: <span class="tok-type">usize</span>) ReadError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L32"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (conn.protocol) {</span>
<span class="line" id="L33"> .plain => conn.stream.readAtLeast(buffer, len),</span>
<span class="line" id="L34"> <span class="tok-comment">// .tls => conn.tls_client.readAtLeast(conn.stream, buffer, len),</span>
</span>
<span class="line" id="L35"> } <span class="tok-kw">catch</span> |err| {</span>
<span class="line" id="L36"> <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L37"> <span class="tok-kw">error</span>.ConnectionResetByPeer, <span class="tok-kw">error</span>.BrokenPipe => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ConnectionResetByPeer,</span>
<span class="line" id="L38"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnexpectedReadFailure,</span>
<span class="line" id="L39"> }</span>
<span class="line" id="L40"> };</span>
<span class="line" id="L41"> }</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fill</span>(conn: *Connection) ReadError!<span class="tok-type">void</span> {</span>
<span class="line" id="L44"> <span class="tok-kw">if</span> (conn.read_end != conn.read_start) <span class="tok-kw">return</span>;</span>
<span class="line" id="L45"></span>
<span class="line" id="L46"> <span class="tok-kw">const</span> nread = <span class="tok-kw">try</span> conn.rawReadAtLeast(conn.read_buf[<span class="tok-number">0</span>..], <span class="tok-number">1</span>);</span>
<span class="line" id="L47"> <span class="tok-kw">if</span> (nread == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.EndOfStream;</span>
<span class="line" id="L48"> conn.read_start = <span class="tok-number">0</span>;</span>
<span class="line" id="L49"> conn.read_end = <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(nread));</span>
<span class="line" id="L50"> }</span>
<span class="line" id="L51"></span>
<span class="line" id="L52"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">peek</span>(conn: *Connection) []<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L53"> <span class="tok-kw">return</span> conn.read_buf[conn.read_start..conn.read_end];</span>
<span class="line" id="L54"> }</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">drop</span>(conn: *Connection, num: <span class="tok-type">u16</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L57"> conn.read_start += num;</span>
<span class="line" id="L58"> }</span>
<span class="line" id="L59"></span>
<span class="line" id="L60"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">readAtLeast</span>(conn: *Connection, buffer: []<span class="tok-type">u8</span>, len: <span class="tok-type">usize</span>) ReadError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L61"> assert(len <= buffer.len);</span>
<span class="line" id="L62"></span>
<span class="line" id="L63"> <span class="tok-kw">var</span> out_index: <span class="tok-type">u16</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L64"> <span class="tok-kw">while</span> (out_index < len) {</span>
<span class="line" id="L65"> <span class="tok-kw">const</span> available_read = conn.read_end - conn.read_start;</span>
<span class="line" id="L66"> <span class="tok-kw">const</span> available_buffer = buffer.len - out_index;</span>
<span class="line" id="L67"></span>
<span class="line" id="L68"> <span class="tok-kw">if</span> (available_read > available_buffer) { <span class="tok-comment">// partially read buffered data</span>
</span>
<span class="line" id="L69"> <span class="tok-builtin">@memcpy</span>(buffer[out_index..], conn.read_buf[conn.read_start..conn.read_end][<span class="tok-number">0</span>..available_buffer]);</span>
<span class="line" id="L70"> out_index += <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(available_buffer));</span>
<span class="line" id="L71"> conn.read_start += <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(available_buffer));</span>
<span class="line" id="L72"></span>
<span class="line" id="L73"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L74"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (available_read > <span class="tok-number">0</span>) { <span class="tok-comment">// fully read buffered data</span>
</span>
<span class="line" id="L75"> <span class="tok-builtin">@memcpy</span>(buffer[out_index..][<span class="tok-number">0</span>..available_read], conn.read_buf[conn.read_start..conn.read_end]);</span>
<span class="line" id="L76"> out_index += available_read;</span>
<span class="line" id="L77"> conn.read_start += available_read;</span>
<span class="line" id="L78"></span>
<span class="line" id="L79"> <span class="tok-kw">if</span> (out_index >= len) <span class="tok-kw">break</span>;</span>
<span class="line" id="L80"> }</span>
<span class="line" id="L81"></span>
<span class="line" id="L82"> <span class="tok-kw">const</span> leftover_buffer = available_buffer - available_read;</span>
<span class="line" id="L83"> <span class="tok-kw">const</span> leftover_len = len - out_index;</span>
<span class="line" id="L84"></span>
<span class="line" id="L85"> <span class="tok-kw">if</span> (leftover_buffer > conn.read_buf.len) {</span>
<span class="line" id="L86"> <span class="tok-comment">// skip the buffer if the output is large enough</span>
</span>
<span class="line" id="L87"> <span class="tok-kw">return</span> conn.rawReadAtLeast(buffer[out_index..], leftover_len);</span>
<span class="line" id="L88"> }</span>
<span class="line" id="L89"></span>
<span class="line" id="L90"> <span class="tok-kw">try</span> conn.fill();</span>
<span class="line" id="L91"> }</span>
<span class="line" id="L92"></span>
<span class="line" id="L93"> <span class="tok-kw">return</span> out_index;</span>
<span class="line" id="L94"> }</span>
<span class="line" id="L95"></span>
<span class="line" id="L96"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">read</span>(conn: *Connection, buffer: []<span class="tok-type">u8</span>) ReadError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L97"> <span class="tok-kw">return</span> conn.readAtLeast(buffer, <span class="tok-number">1</span>);</span>
<span class="line" id="L98"> }</span>
<span class="line" id="L99"></span>
<span class="line" id="L100"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ReadError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L101"> ConnectionTimedOut,</span>
<span class="line" id="L102"> ConnectionResetByPeer,</span>
<span class="line" id="L103"> UnexpectedReadFailure,</span>
<span class="line" id="L104"> EndOfStream,</span>
<span class="line" id="L105"> };</span>
<span class="line" id="L106"></span>
<span class="line" id="L107"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Reader = std.io.Reader(*Connection, ReadError, read);</span>
<span class="line" id="L108"></span>
<span class="line" id="L109"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reader</span>(conn: *Connection) Reader {</span>
<span class="line" id="L110"> <span class="tok-kw">return</span> Reader{ .context = conn };</span>
<span class="line" id="L111"> }</span>
<span class="line" id="L112"></span>
<span class="line" id="L113"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">writeAll</span>(conn: *Connection, buffer: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) WriteError!<span class="tok-type">void</span> {</span>
<span class="line" id="L114"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (conn.protocol) {</span>
<span class="line" id="L115"> .plain => conn.stream.writeAll(buffer),</span>
<span class="line" id="L116"> <span class="tok-comment">// .tls => return conn.tls_client.writeAll(conn.stream, buffer),</span>
</span>
<span class="line" id="L117"> } <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L118"> <span class="tok-kw">error</span>.BrokenPipe, <span class="tok-kw">error</span>.ConnectionResetByPeer => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ConnectionResetByPeer,</span>
<span class="line" id="L119"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnexpectedWriteFailure,</span>
<span class="line" id="L120"> };</span>
<span class="line" id="L121"> }</span>
<span class="line" id="L122"></span>
<span class="line" id="L123"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">write</span>(conn: *Connection, buffer: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) WriteError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L124"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (conn.protocol) {</span>
<span class="line" id="L125"> .plain => conn.stream.write(buffer),</span>
<span class="line" id="L126"> <span class="tok-comment">// .tls => return conn.tls_client.write(conn.stream, buffer),</span>
</span>
<span class="line" id="L127"> } <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L128"> <span class="tok-kw">error</span>.BrokenPipe, <span class="tok-kw">error</span>.ConnectionResetByPeer => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ConnectionResetByPeer,</span>
<span class="line" id="L129"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnexpectedWriteFailure,</span>
<span class="line" id="L130"> };</span>
<span class="line" id="L131"> }</span>
<span class="line" id="L132"></span>
<span class="line" id="L133"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> WriteError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L134"> ConnectionResetByPeer,</span>
<span class="line" id="L135"> UnexpectedWriteFailure,</span>
<span class="line" id="L136"> };</span>
<span class="line" id="L137"></span>
<span class="line" id="L138"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Writer = std.io.Writer(*Connection, WriteError, write);</span>
<span class="line" id="L139"></span>
<span class="line" id="L140"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">writer</span>(conn: *Connection) Writer {</span>
<span class="line" id="L141"> <span class="tok-kw">return</span> Writer{ .context = conn };</span>
<span class="line" id="L142"> }</span>
<span class="line" id="L143"></span>
<span class="line" id="L144"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">close</span>(conn: *Connection) <span class="tok-type">void</span> {</span>
<span class="line" id="L145"> conn.stream.close();</span>
<span class="line" id="L146"> }</span>
<span class="line" id="L147">};</span>
<span class="line" id="L148"></span>
<span class="line" id="L149"><span class="tok-comment">/// The mode of transport for responses.</span></span>
<span class="line" id="L150"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ResponseTransfer = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L151"> content_length: <span class="tok-type">u64</span>,</span>
<span class="line" id="L152"> chunked: <span class="tok-type">void</span>,</span>
<span class="line" id="L153"> none: <span class="tok-type">void</span>,</span>
<span class="line" id="L154">};</span>
<span class="line" id="L155"></span>
<span class="line" id="L156"><span class="tok-comment">/// The decompressor for request messages.</span></span>
<span class="line" id="L157"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Compression = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L158"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> DeflateDecompressor = std.compress.zlib.DecompressStream(Response.TransferReader);</span>
<span class="line" id="L159"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> GzipDecompressor = std.compress.gzip.Decompress(Response.TransferReader);</span>
<span class="line" id="L160"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ZstdDecompressor = std.compress.zstd.DecompressStream(Response.TransferReader, .{});</span>
<span class="line" id="L161"></span>
<span class="line" id="L162"> deflate: DeflateDecompressor,</span>
<span class="line" id="L163"> gzip: GzipDecompressor,</span>
<span class="line" id="L164"> zstd: ZstdDecompressor,</span>
<span class="line" id="L165"> none: <span class="tok-type">void</span>,</span>
<span class="line" id="L166">};</span>
<span class="line" id="L167"></span>
<span class="line" id="L168"><span class="tok-comment">/// A HTTP request originating from a client.</span></span>
<span class="line" id="L169"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Request = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L170"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ParseError = Allocator.Error || <span class="tok-kw">error</span>{</span>
<span class="line" id="L171"> UnknownHttpMethod,</span>
<span class="line" id="L172"> HttpHeadersInvalid,</span>
<span class="line" id="L173"> HttpHeaderContinuationsUnsupported,</span>
<span class="line" id="L174"> HttpTransferEncodingUnsupported,</span>
<span class="line" id="L175"> HttpConnectionHeaderUnsupported,</span>
<span class="line" id="L176"> InvalidContentLength,</span>
<span class="line" id="L177"> CompressionNotSupported,</span>
<span class="line" id="L178"> };</span>
<span class="line" id="L179"></span>
<span class="line" id="L180"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parse</span>(req: *Request, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) ParseError!<span class="tok-type">void</span> {</span>
<span class="line" id="L181"> <span class="tok-kw">var</span> it = mem.tokenizeAny(<span class="tok-type">u8</span>, bytes[<span class="tok-number">0</span> .. bytes.len - <span class="tok-number">4</span>], <span class="tok-str">"\r\n"</span>);</span>
<span class="line" id="L182"></span>
<span class="line" id="L183"> <span class="tok-kw">const</span> first_line = it.next() <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L184"> <span class="tok-kw">if</span> (first_line.len < <span class="tok-number">10</span>)</span>
<span class="line" id="L185"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L186"></span>
<span class="line" id="L187"> <span class="tok-kw">const</span> method_end = mem.indexOfScalar(<span class="tok-type">u8</span>, first_line, <span class="tok-str">' '</span>) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L188"> <span class="tok-kw">const</span> method_str = first_line[<span class="tok-number">0</span>..method_end];</span>
<span class="line" id="L189"> <span class="tok-kw">const</span> method = std.meta.stringToEnum(http.Method, method_str) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnknownHttpMethod;</span>
<span class="line" id="L190"></span>
<span class="line" id="L191"> <span class="tok-kw">const</span> version_start = mem.lastIndexOfScalar(<span class="tok-type">u8</span>, first_line, <span class="tok-str">' '</span>) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L192"> <span class="tok-kw">if</span> (version_start == method_end) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L193"></span>
<span class="line" id="L194"> <span class="tok-kw">const</span> version_str = first_line[version_start + <span class="tok-number">1</span> ..];</span>
<span class="line" id="L195"> <span class="tok-kw">if</span> (version_str.len != <span class="tok-number">8</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L196"> <span class="tok-kw">const</span> version: http.Version = <span class="tok-kw">switch</span> (int64(version_str[<span class="tok-number">0</span>..<span class="tok-number">8</span>])) {</span>
<span class="line" id="L197"> int64(<span class="tok-str">"HTTP/1.0"</span>) => .@"HTTP/1.0",</span>
<span class="line" id="L198"> int64(<span class="tok-str">"HTTP/1.1"</span>) => .@"HTTP/1.1",</span>
<span class="line" id="L199"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid,</span>
<span class="line" id="L200"> };</span>
<span class="line" id="L201"></span>
<span class="line" id="L202"> <span class="tok-kw">const</span> target = first_line[method_end + <span class="tok-number">1</span> .. version_start];</span>
<span class="line" id="L203"></span>
<span class="line" id="L204"> req.method = method;</span>
<span class="line" id="L205"> req.target = target;</span>
<span class="line" id="L206"> req.version = version;</span>
<span class="line" id="L207"></span>
<span class="line" id="L208"> <span class="tok-kw">while</span> (it.next()) |line| {</span>
<span class="line" id="L209"> <span class="tok-kw">if</span> (line.len == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L210"> <span class="tok-kw">switch</span> (line[<span class="tok-number">0</span>]) {</span>
<span class="line" id="L211"> <span class="tok-str">' '</span>, <span class="tok-str">'\t'</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeaderContinuationsUnsupported,</span>
<span class="line" id="L212"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L213"> }</span>
<span class="line" id="L214"></span>
<span class="line" id="L215"> <span class="tok-kw">var</span> line_it = mem.tokenizeAny(<span class="tok-type">u8</span>, line, <span class="tok-str">": "</span>);</span>
<span class="line" id="L216"> <span class="tok-kw">const</span> header_name = line_it.next() <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L217"> <span class="tok-kw">const</span> header_value = line_it.rest();</span>
<span class="line" id="L218"></span>
<span class="line" id="L219"> <span class="tok-kw">try</span> req.headers.append(header_name, header_value);</span>
<span class="line" id="L220"></span>
<span class="line" id="L221"> <span class="tok-kw">if</span> (std.ascii.eqlIgnoreCase(header_name, <span class="tok-str">"content-length"</span>)) {</span>
<span class="line" id="L222"> <span class="tok-kw">if</span> (req.content_length != <span class="tok-null">null</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L223"> req.content_length = std.fmt.parseInt(<span class="tok-type">u64</span>, header_value, <span class="tok-number">10</span>) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidContentLength;</span>
<span class="line" id="L224"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (std.ascii.eqlIgnoreCase(header_name, <span class="tok-str">"transfer-encoding"</span>)) {</span>
<span class="line" id="L225"> <span class="tok-comment">// Transfer-Encoding: second, first</span>
</span>
<span class="line" id="L226"> <span class="tok-comment">// Transfer-Encoding: deflate, chunked</span>
</span>
<span class="line" id="L227"> <span class="tok-kw">var</span> iter = mem.splitBackwardsScalar(<span class="tok-type">u8</span>, header_value, <span class="tok-str">','</span>);</span>
<span class="line" id="L228"></span>
<span class="line" id="L229"> <span class="tok-kw">if</span> (iter.next()) |first| {</span>
<span class="line" id="L230"> <span class="tok-kw">const</span> trimmed = mem.trim(<span class="tok-type">u8</span>, first, <span class="tok-str">" "</span>);</span>
<span class="line" id="L231"></span>
<span class="line" id="L232"> <span class="tok-kw">if</span> (std.meta.stringToEnum(http.TransferEncoding, trimmed)) |te| {</span>
<span class="line" id="L233"> <span class="tok-kw">if</span> (req.transfer_encoding != <span class="tok-null">null</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L234"> req.transfer_encoding = te;</span>
<span class="line" id="L235"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (std.meta.stringToEnum(http.ContentEncoding, trimmed)) |ce| {</span>
<span class="line" id="L236"> <span class="tok-kw">if</span> (req.transfer_compression != <span class="tok-null">null</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L237"> req.transfer_compression = ce;</span>
<span class="line" id="L238"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L239"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpTransferEncodingUnsupported;</span>
<span class="line" id="L240"> }</span>
<span class="line" id="L241"> }</span>
<span class="line" id="L242"></span>
<span class="line" id="L243"> <span class="tok-kw">if</span> (iter.next()) |second| {</span>
<span class="line" id="L244"> <span class="tok-kw">if</span> (req.transfer_compression != <span class="tok-null">null</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpTransferEncodingUnsupported;</span>
<span class="line" id="L245"></span>
<span class="line" id="L246"> <span class="tok-kw">const</span> trimmed = mem.trim(<span class="tok-type">u8</span>, second, <span class="tok-str">" "</span>);</span>
<span class="line" id="L247"></span>
<span class="line" id="L248"> <span class="tok-kw">if</span> (std.meta.stringToEnum(http.ContentEncoding, trimmed)) |ce| {</span>
<span class="line" id="L249"> req.transfer_compression = ce;</span>
<span class="line" id="L250"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L251"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpTransferEncodingUnsupported;</span>
<span class="line" id="L252"> }</span>
<span class="line" id="L253"> }</span>
<span class="line" id="L254"></span>
<span class="line" id="L255"> <span class="tok-kw">if</span> (iter.next()) |_| <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpTransferEncodingUnsupported;</span>
<span class="line" id="L256"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (std.ascii.eqlIgnoreCase(header_name, <span class="tok-str">"content-encoding"</span>)) {</span>
<span class="line" id="L257"> <span class="tok-kw">if</span> (req.transfer_compression != <span class="tok-null">null</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L258"></span>
<span class="line" id="L259"> <span class="tok-kw">const</span> trimmed = mem.trim(<span class="tok-type">u8</span>, header_value, <span class="tok-str">" "</span>);</span>
<span class="line" id="L260"></span>
<span class="line" id="L261"> <span class="tok-kw">if</span> (std.meta.stringToEnum(http.ContentEncoding, trimmed)) |ce| {</span>
<span class="line" id="L262"> req.transfer_compression = ce;</span>
<span class="line" id="L263"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L264"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpTransferEncodingUnsupported;</span>
<span class="line" id="L265"> }</span>
<span class="line" id="L266"> }</span>
<span class="line" id="L267"> }</span>
<span class="line" id="L268"> }</span>
<span class="line" id="L269"></span>
<span class="line" id="L270"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">int64</span>(array: *<span class="tok-kw">const</span> [<span class="tok-number">8</span>]<span class="tok-type">u8</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L271"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@bitCast</span>(array.*));</span>
<span class="line" id="L272"> }</span>
<span class="line" id="L273"></span>
<span class="line" id="L274"> method: http.Method,</span>
<span class="line" id="L275"> target: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L276"> version: http.Version,</span>
<span class="line" id="L277"></span>
<span class="line" id="L278"> content_length: ?<span class="tok-type">u64</span> = <span class="tok-null">null</span>,</span>
<span class="line" id="L279"> transfer_encoding: ?http.TransferEncoding = <span class="tok-null">null</span>,</span>
<span class="line" id="L280"> transfer_compression: ?http.ContentEncoding = <span class="tok-null">null</span>,</span>
<span class="line" id="L281"></span>
<span class="line" id="L282"> headers: http.Headers,</span>
<span class="line" id="L283"> parser: proto.HeadersParser,</span>
<span class="line" id="L284"> compression: Compression = .none,</span>
<span class="line" id="L285">};</span>
<span class="line" id="L286"></span>
<span class="line" id="L287"><span class="tok-comment">/// A HTTP response waiting to be sent.</span></span>
<span class="line" id="L288"><span class="tok-comment">///</span></span>
<span class="line" id="L289"><span class="tok-comment">/// [/ <----------------------------------- \]</span></span>
<span class="line" id="L290"><span class="tok-comment">/// Order of operations: accept -> wait -> do [ -> write -> finish][ -> reset /]</span></span>
<span class="line" id="L291"><span class="tok-comment">/// \ -> read /</span></span>
<span class="line" id="L292"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Response = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L293"> version: http.Version = .@"HTTP/1.1",</span>
<span class="line" id="L294"> status: http.Status = .ok,</span>
<span class="line" id="L295"> reason: ?[]<span class="tok-kw">const</span> <span class="tok-type">u8</span> = <span class="tok-null">null</span>,</span>
<span class="line" id="L296"></span>
<span class="line" id="L297"> transfer_encoding: ResponseTransfer = .none,</span>
<span class="line" id="L298"></span>
<span class="line" id="L299"> allocator: Allocator,</span>
<span class="line" id="L300"> address: net.Address,</span>
<span class="line" id="L301"> connection: Connection,</span>
<span class="line" id="L302"></span>
<span class="line" id="L303"> headers: http.Headers,</span>
<span class="line" id="L304"> request: Request,</span>
<span class="line" id="L305"></span>
<span class="line" id="L306"> state: State = .first,</span>
<span class="line" id="L307"></span>
<span class="line" id="L308"> <span class="tok-kw">const</span> State = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L309"> first,</span>
<span class="line" id="L310"> start,</span>
<span class="line" id="L311"> waited,</span>
<span class="line" id="L312"> responded,</span>
<span class="line" id="L313"> finished,</span>
<span class="line" id="L314"> };</span>
<span class="line" id="L315"></span>
<span class="line" id="L316"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(res: *Response) <span class="tok-type">void</span> {</span>
<span class="line" id="L317"> res.connection.close();</span>
<span class="line" id="L318"></span>
<span class="line" id="L319"> res.headers.deinit();</span>
<span class="line" id="L320"> res.request.headers.deinit();</span>
<span class="line" id="L321"></span>
<span class="line" id="L322"> <span class="tok-kw">if</span> (res.request.parser.header_bytes_owned) {</span>
<span class="line" id="L323"> res.request.parser.header_bytes.deinit(res.allocator);</span>
<span class="line" id="L324"> }</span>
<span class="line" id="L325"> }</span>
<span class="line" id="L326"></span>
<span class="line" id="L327"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ResetState = <span class="tok-kw">enum</span> { reset, closing };</span>
<span class="line" id="L328"></span>
<span class="line" id="L329"> <span class="tok-comment">/// Reset this response to its initial state. This must be called before handling a second request on the same connection.</span></span>
<span class="line" id="L330"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reset</span>(res: *Response) ResetState {</span>
<span class="line" id="L331"> <span class="tok-kw">if</span> (res.state == .first) {</span>
<span class="line" id="L332"> res.state = .start;</span>
<span class="line" id="L333"> <span class="tok-kw">return</span> .reset;</span>
<span class="line" id="L334"> }</span>
<span class="line" id="L335"></span>
<span class="line" id="L336"> <span class="tok-kw">if</span> (!res.request.parser.done) {</span>
<span class="line" id="L337"> <span class="tok-comment">// If the response wasn't fully read, then we need to close the connection.</span>
</span>
<span class="line" id="L338"> res.connection.closing = <span class="tok-null">true</span>;</span>
<span class="line" id="L339"> <span class="tok-kw">return</span> .closing;</span>
<span class="line" id="L340"> }</span>
<span class="line" id="L341"></span>
<span class="line" id="L342"> <span class="tok-comment">// A connection is only keep-alive if the Connection header is present and it's value is not "close".</span>
</span>
<span class="line" id="L343"> <span class="tok-comment">// The server and client must both agree</span>
</span>
<span class="line" id="L344"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L345"> <span class="tok-comment">// do() defaults to using keep-alive if the client requests it.</span>
</span>
<span class="line" id="L346"> <span class="tok-kw">const</span> res_connection = res.headers.getFirstValue(<span class="tok-str">"connection"</span>);</span>
<span class="line" id="L347"> <span class="tok-kw">const</span> res_keepalive = res_connection != <span class="tok-null">null</span> <span class="tok-kw">and</span> !std.ascii.eqlIgnoreCase(<span class="tok-str">"close"</span>, res_connection.?);</span>
<span class="line" id="L348"></span>
<span class="line" id="L349"> <span class="tok-kw">const</span> req_connection = res.request.headers.getFirstValue(<span class="tok-str">"connection"</span>);</span>
<span class="line" id="L350"> <span class="tok-kw">const</span> req_keepalive = req_connection != <span class="tok-null">null</span> <span class="tok-kw">and</span> !std.ascii.eqlIgnoreCase(<span class="tok-str">"close"</span>, req_connection.?);</span>
<span class="line" id="L351"> <span class="tok-kw">if</span> (req_keepalive <span class="tok-kw">and</span> (res_keepalive <span class="tok-kw">or</span> res_connection == <span class="tok-null">null</span>)) {</span>
<span class="line" id="L352"> res.connection.closing = <span class="tok-null">false</span>;</span>
<span class="line" id="L353"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L354"> res.connection.closing = <span class="tok-null">true</span>;</span>
<span class="line" id="L355"> }</span>
<span class="line" id="L356"></span>
<span class="line" id="L357"> <span class="tok-kw">switch</span> (res.request.compression) {</span>
<span class="line" id="L358"> .none => {},</span>
<span class="line" id="L359"> .deflate => |*deflate| deflate.deinit(),</span>
<span class="line" id="L360"> .gzip => |*gzip| gzip.deinit(),</span>
<span class="line" id="L361"> .zstd => |*zstd| zstd.deinit(),</span>
<span class="line" id="L362"> }</span>
<span class="line" id="L363"></span>
<span class="line" id="L364"> res.state = .start;</span>
<span class="line" id="L365"> res.version = .@"HTTP/1.1";</span>
<span class="line" id="L366"> res.status = .ok;</span>
<span class="line" id="L367"> res.reason = <span class="tok-null">null</span>;</span>
<span class="line" id="L368"></span>
<span class="line" id="L369"> res.transfer_encoding = .none;</span>
<span class="line" id="L370"></span>
<span class="line" id="L371"> res.headers.clearRetainingCapacity();</span>
<span class="line" id="L372"></span>
<span class="line" id="L373"> res.request.headers.clearAndFree(); <span class="tok-comment">// FIXME: figure out why `clearRetainingCapacity` causes a leak in hash_map here</span>
</span>
<span class="line" id="L374"> res.request.parser.reset();</span>
<span class="line" id="L375"></span>
<span class="line" id="L376"> res.request = Request{</span>
<span class="line" id="L377"> .version = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L378"> .method = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L379"> .target = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L380"> .headers = res.request.headers,</span>
<span class="line" id="L381"> .parser = res.request.parser,</span>
<span class="line" id="L382"> };</span>
<span class="line" id="L383"></span>
<span class="line" id="L384"> <span class="tok-kw">if</span> (res.connection.closing) {</span>
<span class="line" id="L385"> <span class="tok-kw">return</span> .closing;</span>
<span class="line" id="L386"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L387"> <span class="tok-kw">return</span> .reset;</span>
<span class="line" id="L388"> }</span>
<span class="line" id="L389"> }</span>
<span class="line" id="L390"></span>
<span class="line" id="L391"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> DoError = Connection.WriteError || <span class="tok-kw">error</span>{ UnsupportedTransferEncoding, InvalidContentLength };</span>
<span class="line" id="L392"></span>
<span class="line" id="L393"> <span class="tok-comment">/// Send the response headers.</span></span>
<span class="line" id="L394"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">do</span>(res: *Response) !<span class="tok-type">void</span> {</span>
<span class="line" id="L395"> <span class="tok-kw">switch</span> (res.state) {</span>
<span class="line" id="L396"> .waited => res.state = .responded,</span>
<span class="line" id="L397"> .first, .start, .responded, .finished => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L398"> }</span>
<span class="line" id="L399"></span>
<span class="line" id="L400"> <span class="tok-kw">var</span> buffered = std.io.bufferedWriter(res.connection.writer());</span>
<span class="line" id="L401"> <span class="tok-kw">const</span> w = buffered.writer();</span>
<span class="line" id="L402"></span>
<span class="line" id="L403"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-builtin">@tagName</span>(res.version));</span>
<span class="line" id="L404"> <span class="tok-kw">try</span> w.writeByte(<span class="tok-str">' '</span>);</span>
<span class="line" id="L405"> <span class="tok-kw">try</span> w.print(<span class="tok-str">"{d}"</span>, .{<span class="tok-builtin">@intFromEnum</span>(res.status)});</span>
<span class="line" id="L406"> <span class="tok-kw">try</span> w.writeByte(<span class="tok-str">' '</span>);</span>
<span class="line" id="L407"> <span class="tok-kw">if</span> (res.reason) |reason| {</span>
<span class="line" id="L408"> <span class="tok-kw">try</span> w.writeAll(reason);</span>
<span class="line" id="L409"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (res.status.phrase()) |phrase| {</span>
<span class="line" id="L410"> <span class="tok-kw">try</span> w.writeAll(phrase);</span>
<span class="line" id="L411"> }</span>
<span class="line" id="L412"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-str">"\r\n"</span>);</span>
<span class="line" id="L413"></span>
<span class="line" id="L414"> <span class="tok-kw">if</span> (!res.headers.contains(<span class="tok-str">"server"</span>)) {</span>
<span class="line" id="L415"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-str">"Server: zig (std.http)\r\n"</span>);</span>
<span class="line" id="L416"> }</span>
<span class="line" id="L417"></span>
<span class="line" id="L418"> <span class="tok-kw">if</span> (!res.headers.contains(<span class="tok-str">"connection"</span>)) {</span>
<span class="line" id="L419"> <span class="tok-kw">const</span> req_connection = res.request.headers.getFirstValue(<span class="tok-str">"connection"</span>);</span>
<span class="line" id="L420"> <span class="tok-kw">const</span> req_keepalive = req_connection != <span class="tok-null">null</span> <span class="tok-kw">and</span> !std.ascii.eqlIgnoreCase(<span class="tok-str">"close"</span>, req_connection.?);</span>
<span class="line" id="L421"></span>
<span class="line" id="L422"> <span class="tok-kw">if</span> (req_keepalive) {</span>
<span class="line" id="L423"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-str">"Connection: keep-alive\r\n"</span>);</span>
<span class="line" id="L424"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L425"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-str">"Connection: close\r\n"</span>);</span>
<span class="line" id="L426"> }</span>
<span class="line" id="L427"> }</span>
<span class="line" id="L428"></span>
<span class="line" id="L429"> <span class="tok-kw">const</span> has_transfer_encoding = res.headers.contains(<span class="tok-str">"transfer-encoding"</span>);</span>
<span class="line" id="L430"> <span class="tok-kw">const</span> has_content_length = res.headers.contains(<span class="tok-str">"content-length"</span>);</span>
<span class="line" id="L431"></span>
<span class="line" id="L432"> <span class="tok-kw">if</span> (!has_transfer_encoding <span class="tok-kw">and</span> !has_content_length) {</span>
<span class="line" id="L433"> <span class="tok-kw">switch</span> (res.transfer_encoding) {</span>
<span class="line" id="L434"> .chunked => <span class="tok-kw">try</span> w.writeAll(<span class="tok-str">"Transfer-Encoding: chunked\r\n"</span>),</span>
<span class="line" id="L435"> .content_length => |content_length| <span class="tok-kw">try</span> w.print(<span class="tok-str">"Content-Length: {d}\r\n"</span>, .{content_length}),</span>
<span class="line" id="L436"> .none => {},</span>
<span class="line" id="L437"> }</span>
<span class="line" id="L438"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L439"> <span class="tok-kw">if</span> (has_content_length) {</span>
<span class="line" id="L440"> <span class="tok-kw">const</span> content_length = std.fmt.parseInt(<span class="tok-type">u64</span>, res.headers.getFirstValue(<span class="tok-str">"content-length"</span>).?, <span class="tok-number">10</span>) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidContentLength;</span>
<span class="line" id="L441"></span>
<span class="line" id="L442"> res.transfer_encoding = .{ .content_length = content_length };</span>
<span class="line" id="L443"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (has_transfer_encoding) {</span>
<span class="line" id="L444"> <span class="tok-kw">const</span> transfer_encoding = res.headers.getFirstValue(<span class="tok-str">"content-length"</span>).?;</span>
<span class="line" id="L445"> <span class="tok-kw">if</span> (std.mem.eql(<span class="tok-type">u8</span>, transfer_encoding, <span class="tok-str">"chunked"</span>)) {</span>
<span class="line" id="L446"> res.transfer_encoding = .chunked;</span>
<span class="line" id="L447"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L448"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnsupportedTransferEncoding;</span>
<span class="line" id="L449"> }</span>
<span class="line" id="L450"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L451"> res.transfer_encoding = .none;</span>
<span class="line" id="L452"> }</span>
<span class="line" id="L453"> }</span>
<span class="line" id="L454"></span>
<span class="line" id="L455"> <span class="tok-kw">try</span> w.print(<span class="tok-str">"{}"</span>, .{res.headers});</span>
<span class="line" id="L456"></span>
<span class="line" id="L457"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-str">"\r\n"</span>);</span>
<span class="line" id="L458"></span>
<span class="line" id="L459"> <span class="tok-kw">try</span> buffered.flush();</span>
<span class="line" id="L460"> }</span>
<span class="line" id="L461"></span>
<span class="line" id="L462"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> TransferReadError = Connection.ReadError || proto.HeadersParser.ReadError;</span>
<span class="line" id="L463"></span>
<span class="line" id="L464"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> TransferReader = std.io.Reader(*Response, TransferReadError, transferRead);</span>
<span class="line" id="L465"></span>
<span class="line" id="L466"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">transferReader</span>(res: *Response) TransferReader {</span>
<span class="line" id="L467"> <span class="tok-kw">return</span> .{ .context = res };</span>
<span class="line" id="L468"> }</span>
<span class="line" id="L469"></span>
<span class="line" id="L470"> <span class="tok-kw">fn</span> <span class="tok-fn">transferRead</span>(res: *Response, buf: []<span class="tok-type">u8</span>) TransferReadError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L471"> <span class="tok-kw">if</span> (res.request.parser.done) <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L472"></span>
<span class="line" id="L473"> <span class="tok-kw">var</span> index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L474"> <span class="tok-kw">while</span> (index == <span class="tok-number">0</span>) {</span>
<span class="line" id="L475"> <span class="tok-kw">const</span> amt = <span class="tok-kw">try</span> res.request.parser.read(&res.connection, buf[index..], <span class="tok-null">false</span>);</span>
<span class="line" id="L476"> <span class="tok-kw">if</span> (amt == <span class="tok-number">0</span> <span class="tok-kw">and</span> res.request.parser.done) <span class="tok-kw">break</span>;</span>
<span class="line" id="L477"> index += amt;</span>
<span class="line" id="L478"> }</span>
<span class="line" id="L479"></span>
<span class="line" id="L480"> <span class="tok-kw">return</span> index;</span>
<span class="line" id="L481"> }</span>
<span class="line" id="L482"></span>
<span class="line" id="L483"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> WaitError = Connection.ReadError || proto.HeadersParser.CheckCompleteHeadError || Request.ParseError || <span class="tok-kw">error</span>{ CompressionInitializationFailed, CompressionNotSupported };</span>
<span class="line" id="L484"></span>
<span class="line" id="L485"> <span class="tok-comment">/// Wait for the client to send a complete request head.</span></span>
<span class="line" id="L486"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(res: *Response) WaitError!<span class="tok-type">void</span> {</span>
<span class="line" id="L487"> <span class="tok-kw">switch</span> (res.state) {</span>
<span class="line" id="L488"> .first, .start => res.state = .waited,</span>
<span class="line" id="L489"> .waited, .responded, .finished => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L490"> }</span>
<span class="line" id="L491"></span>
<span class="line" id="L492"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L493"> <span class="tok-kw">try</span> res.connection.fill();</span>
<span class="line" id="L494"></span>
<span class="line" id="L495"> <span class="tok-kw">const</span> nchecked = <span class="tok-kw">try</span> res.request.parser.checkCompleteHead(res.allocator, res.connection.peek());</span>
<span class="line" id="L496"> res.connection.drop(<span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(nchecked)));</span>
<span class="line" id="L497"></span>
<span class="line" id="L498"> <span class="tok-kw">if</span> (res.request.parser.state.isContent()) <span class="tok-kw">break</span>;</span>
<span class="line" id="L499"> }</span>
<span class="line" id="L500"></span>
<span class="line" id="L501"> res.request.headers = .{ .allocator = res.allocator, .owned = <span class="tok-null">true</span> };</span>
<span class="line" id="L502"> <span class="tok-kw">try</span> res.request.parse(res.request.parser.header_bytes.items);</span>
<span class="line" id="L503"></span>
<span class="line" id="L504"> <span class="tok-kw">if</span> (res.request.transfer_encoding) |te| {</span>
<span class="line" id="L505"> <span class="tok-kw">switch</span> (te) {</span>
<span class="line" id="L506"> .chunked => {</span>
<span class="line" id="L507"> res.request.parser.next_chunk_length = <span class="tok-number">0</span>;</span>
<span class="line" id="L508"> res.request.parser.state = .chunk_head_size;</span>
<span class="line" id="L509"> },</span>
<span class="line" id="L510"> }</span>
<span class="line" id="L511"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (res.request.content_length) |cl| {</span>
<span class="line" id="L512"> res.request.parser.next_chunk_length = cl;</span>
<span class="line" id="L513"></span>
<span class="line" id="L514"> <span class="tok-kw">if</span> (cl == <span class="tok-number">0</span>) res.request.parser.done = <span class="tok-null">true</span>;</span>
<span class="line" id="L515"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L516"> res.request.parser.done = <span class="tok-null">true</span>;</span>
<span class="line" id="L517"> }</span>
<span class="line" id="L518"></span>
<span class="line" id="L519"> <span class="tok-kw">if</span> (!res.request.parser.done) {</span>
<span class="line" id="L520"> <span class="tok-kw">if</span> (res.request.transfer_compression) |tc| <span class="tok-kw">switch</span> (tc) {</span>
<span class="line" id="L521"> .compress => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CompressionNotSupported,</span>
<span class="line" id="L522"> .deflate => res.request.compression = .{</span>
<span class="line" id="L523"> .deflate = std.compress.zlib.decompressStream(res.allocator, res.transferReader()) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CompressionInitializationFailed,</span>
<span class="line" id="L524"> },</span>
<span class="line" id="L525"> .gzip => res.request.compression = .{</span>
<span class="line" id="L526"> .gzip = std.compress.gzip.decompress(res.allocator, res.transferReader()) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CompressionInitializationFailed,</span>
<span class="line" id="L527"> },</span>
<span class="line" id="L528"> .zstd => res.request.compression = .{</span>
<span class="line" id="L529"> .zstd = std.compress.zstd.decompressStream(res.allocator, res.transferReader()),</span>
<span class="line" id="L530"> },</span>
<span class="line" id="L531"> };</span>
<span class="line" id="L532"> }</span>
<span class="line" id="L533"> }</span>
<span class="line" id="L534"></span>
<span class="line" id="L535"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ReadError = TransferReadError || proto.HeadersParser.CheckCompleteHeadError || <span class="tok-kw">error</span>{ DecompressionFailure, InvalidTrailers };</span>
<span class="line" id="L536"></span>
<span class="line" id="L537"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Reader = std.io.Reader(*Response, ReadError, read);</span>
<span class="line" id="L538"></span>
<span class="line" id="L539"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reader</span>(res: *Response) Reader {</span>
<span class="line" id="L540"> <span class="tok-kw">return</span> .{ .context = res };</span>
<span class="line" id="L541"> }</span>
<span class="line" id="L542"></span>
<span class="line" id="L543"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">read</span>(res: *Response, buffer: []<span class="tok-type">u8</span>) ReadError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L544"> <span class="tok-kw">switch</span> (res.state) {</span>
<span class="line" id="L545"> .waited, .responded, .finished => {},</span>
<span class="line" id="L546"> .first, .start => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L547"> }</span>
<span class="line" id="L548"></span>
<span class="line" id="L549"> <span class="tok-kw">const</span> out_index = <span class="tok-kw">switch</span> (res.request.compression) {</span>
<span class="line" id="L550"> .deflate => |*deflate| deflate.read(buffer) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.DecompressionFailure,</span>
<span class="line" id="L551"> .gzip => |*gzip| gzip.read(buffer) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.DecompressionFailure,</span>
<span class="line" id="L552"> .zstd => |*zstd| zstd.read(buffer) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.DecompressionFailure,</span>
<span class="line" id="L553"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> res.transferRead(buffer),</span>
<span class="line" id="L554"> };</span>
<span class="line" id="L555"></span>
<span class="line" id="L556"> <span class="tok-kw">if</span> (out_index == <span class="tok-number">0</span>) {</span>
<span class="line" id="L557"> <span class="tok-kw">const</span> has_trail = !res.request.parser.state.isContent();</span>
<span class="line" id="L558"></span>
<span class="line" id="L559"> <span class="tok-kw">while</span> (!res.request.parser.state.isContent()) { <span class="tok-comment">// read trailing headers</span>
</span>
<span class="line" id="L560"> <span class="tok-kw">try</span> res.connection.fill();</span>
<span class="line" id="L561"></span>
<span class="line" id="L562"> <span class="tok-kw">const</span> nchecked = <span class="tok-kw">try</span> res.request.parser.checkCompleteHead(res.allocator, res.connection.peek());</span>
<span class="line" id="L563"> res.connection.drop(<span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(nchecked)));</span>
<span class="line" id="L564"> }</span>
<span class="line" id="L565"></span>
<span class="line" id="L566"> <span class="tok-kw">if</span> (has_trail) {</span>
<span class="line" id="L567"> res.request.headers = http.Headers{ .allocator = res.allocator, .owned = <span class="tok-null">false</span> };</span>
<span class="line" id="L568"></span>
<span class="line" id="L569"> <span class="tok-comment">// The response headers before the trailers are already guaranteed to be valid, so they will always be parsed again and cannot return an error.</span>
</span>
<span class="line" id="L570"> <span class="tok-comment">// This will *only* fail for a malformed trailer.</span>
</span>
<span class="line" id="L571"> res.request.parse(res.request.parser.header_bytes.items) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidTrailers;</span>
<span class="line" id="L572"> }</span>
<span class="line" id="L573"> }</span>
<span class="line" id="L574"></span>
<span class="line" id="L575"> <span class="tok-kw">return</span> out_index;</span>
<span class="line" id="L576"> }</span>
<span class="line" id="L577"></span>
<span class="line" id="L578"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">readAll</span>(res: *Response, buffer: []<span class="tok-type">u8</span>) !<span class="tok-type">usize</span> {</span>
<span class="line" id="L579"> <span class="tok-kw">var</span> index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L580"> <span class="tok-kw">while</span> (index < buffer.len) {</span>
<span class="line" id="L581"> <span class="tok-kw">const</span> amt = <span class="tok-kw">try</span> read(res, buffer[index..]);</span>
<span class="line" id="L582"> <span class="tok-kw">if</span> (amt == <span class="tok-number">0</span>) <span class="tok-kw">break</span>;</span>
<span class="line" id="L583"> index += amt;</span>
<span class="line" id="L584"> }</span>
<span class="line" id="L585"> <span class="tok-kw">return</span> index;</span>
<span class="line" id="L586"> }</span>
<span class="line" id="L587"></span>
<span class="line" id="L588"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> WriteError = Connection.WriteError || <span class="tok-kw">error</span>{ NotWriteable, MessageTooLong };</span>
<span class="line" id="L589"></span>
<span class="line" id="L590"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Writer = std.io.Writer(*Response, WriteError, write);</span>
<span class="line" id="L591"></span>
<span class="line" id="L592"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">writer</span>(res: *Response) Writer {</span>
<span class="line" id="L593"> <span class="tok-kw">return</span> .{ .context = res };</span>
<span class="line" id="L594"> }</span>
<span class="line" id="L595"></span>
<span class="line" id="L596"> <span class="tok-comment">/// Write `bytes` to the server. The `transfer_encoding` request header determines how data will be sent.</span></span>
<span class="line" id="L597"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">write</span>(res: *Response, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) WriteError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L598"> <span class="tok-kw">switch</span> (res.state) {</span>
<span class="line" id="L599"> .responded => {},</span>
<span class="line" id="L600"> .first, .waited, .start, .finished => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L601"> }</span>
<span class="line" id="L602"></span>
<span class="line" id="L603"> <span class="tok-kw">switch</span> (res.transfer_encoding) {</span>
<span class="line" id="L604"> .chunked => {</span>
<span class="line" id="L605"> <span class="tok-kw">try</span> res.connection.writer().print(<span class="tok-str">"{x}\r\n"</span>, .{bytes.len});</span>
<span class="line" id="L606"> <span class="tok-kw">try</span> res.connection.writeAll(bytes);</span>
<span class="line" id="L607"> <span class="tok-kw">try</span> res.connection.writeAll(<span class="tok-str">"\r\n"</span>);</span>
<span class="line" id="L608"></span>
<span class="line" id="L609"> <span class="tok-kw">return</span> bytes.len;</span>
<span class="line" id="L610"> },</span>
<span class="line" id="L611"> .content_length => |*len| {</span>
<span class="line" id="L612"> <span class="tok-kw">if</span> (len.* < bytes.len) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MessageTooLong;</span>
<span class="line" id="L613"></span>
<span class="line" id="L614"> <span class="tok-kw">const</span> amt = <span class="tok-kw">try</span> res.connection.write(bytes);</span>
<span class="line" id="L615"> len.* -= amt;</span>
<span class="line" id="L616"> <span class="tok-kw">return</span> amt;</span>
<span class="line" id="L617"> },</span>
<span class="line" id="L618"> .none => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.NotWriteable,</span>
<span class="line" id="L619"> }</span>
<span class="line" id="L620"> }</span>
<span class="line" id="L621"></span>
<span class="line" id="L622"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">writeAll</span>(req: *Response, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) WriteError!<span class="tok-type">void</span> {</span>
<span class="line" id="L623"> <span class="tok-kw">var</span> index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L624"> <span class="tok-kw">while</span> (index < bytes.len) {</span>
<span class="line" id="L625"> index += <span class="tok-kw">try</span> write(req, bytes[index..]);</span>
<span class="line" id="L626"> }</span>
<span class="line" id="L627"> }</span>
<span class="line" id="L628"></span>
<span class="line" id="L629"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> FinishError = WriteError || <span class="tok-kw">error</span>{MessageNotCompleted};</span>
<span class="line" id="L630"></span>
<span class="line" id="L631"> <span class="tok-comment">/// Finish the body of a request. This notifies the server that you have no more data to send.</span></span>
<span class="line" id="L632"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">finish</span>(res: *Response) FinishError!<span class="tok-type">void</span> {</span>
<span class="line" id="L633"> <span class="tok-kw">switch</span> (res.state) {</span>
<span class="line" id="L634"> .responded => res.state = .finished,</span>
<span class="line" id="L635"> .first, .waited, .start, .finished => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L636"> }</span>
<span class="line" id="L637"></span>
<span class="line" id="L638"> <span class="tok-kw">switch</span> (res.transfer_encoding) {</span>
<span class="line" id="L639"> .chunked => <span class="tok-kw">try</span> res.connection.writeAll(<span class="tok-str">"0\r\n\r\n"</span>),</span>
<span class="line" id="L640"> .content_length => |len| <span class="tok-kw">if</span> (len != <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MessageNotCompleted,</span>
<span class="line" id="L641"> .none => {},</span>
<span class="line" id="L642"> }</span>
<span class="line" id="L643"> }</span>
<span class="line" id="L644">};</span>
<span class="line" id="L645"></span>
<span class="line" id="L646"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(allocator: Allocator, options: net.StreamServer.Options) Server {</span>
<span class="line" id="L647"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L648"> .allocator = allocator,</span>
<span class="line" id="L649"> .socket = net.StreamServer.init(options),</span>
<span class="line" id="L650"> };</span>
<span class="line" id="L651">}</span>
<span class="line" id="L652"></span>
<span class="line" id="L653"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(server: *Server) <span class="tok-type">void</span> {</span>
<span class="line" id="L654"> server.socket.deinit();</span>
<span class="line" id="L655">}</span>
<span class="line" id="L656"></span>
<span class="line" id="L657"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ListenError = std.os.SocketError || std.os.BindError || std.os.ListenError || std.os.SetSockOptError || std.os.GetSockNameError;</span>
<span class="line" id="L658"></span>
<span class="line" id="L659"><span class="tok-comment">/// Start the HTTP server listening on the given address.</span></span>
<span class="line" id="L660"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">listen</span>(server: *Server, address: net.Address) !<span class="tok-type">void</span> {</span>
<span class="line" id="L661"> <span class="tok-kw">try</span> server.socket.listen(address);</span>
<span class="line" id="L662">}</span>
<span class="line" id="L663"></span>
<span class="line" id="L664"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> AcceptError = net.StreamServer.AcceptError || Allocator.Error;</span>
<span class="line" id="L665"></span>
<span class="line" id="L666"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> HeaderStrategy = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L667"> <span class="tok-comment">/// In this case, the client's Allocator will be used to store the</span></span>
<span class="line" id="L668"> <span class="tok-comment">/// entire HTTP header. This value is the maximum total size of</span></span>
<span class="line" id="L669"> <span class="tok-comment">/// HTTP headers allowed, otherwise</span></span>
<span class="line" id="L670"> <span class="tok-comment">/// error.HttpHeadersExceededSizeLimit is returned from read().</span></span>
<span class="line" id="L671"> dynamic: <span class="tok-type">usize</span>,</span>
<span class="line" id="L672"> <span class="tok-comment">/// This is used to store the entire HTTP header. If the HTTP</span></span>
<span class="line" id="L673"> <span class="tok-comment">/// header is too big to fit, `error.HttpHeadersExceededSizeLimit`</span></span>
<span class="line" id="L674"> <span class="tok-comment">/// is returned from read(). When this is used, `error.OutOfMemory`</span></span>
<span class="line" id="L675"> <span class="tok-comment">/// cannot be returned from `read()`.</span></span>
<span class="line" id="L676"> static: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L677">};</span>
<span class="line" id="L678"></span>
<span class="line" id="L679"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> AcceptOptions = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L680"> allocator: Allocator,</span>
<span class="line" id="L681"> header_strategy: HeaderStrategy = .{ .dynamic = <span class="tok-number">8192</span> },</span>
<span class="line" id="L682">};</span>
<span class="line" id="L683"></span>
<span class="line" id="L684"><span class="tok-comment">/// Accept a new connection.</span></span>
<span class="line" id="L685"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">accept</span>(server: *Server, options: AcceptOptions) AcceptError!Response {</span>
<span class="line" id="L686"> <span class="tok-kw">const</span> in = <span class="tok-kw">try</span> server.socket.accept();</span>
<span class="line" id="L687"></span>
<span class="line" id="L688"> <span class="tok-kw">return</span> Response{</span>
<span class="line" id="L689"> .allocator = options.allocator,</span>
<span class="line" id="L690"> .address = in.address,</span>
<span class="line" id="L691"> .connection = .{</span>
<span class="line" id="L692"> .stream = in.stream,</span>
<span class="line" id="L693"> .protocol = .plain,</span>
<span class="line" id="L694"> },</span>
<span class="line" id="L695"> .headers = .{ .allocator = options.allocator },</span>
<span class="line" id="L696"> .request = .{</span>
<span class="line" id="L697"> .version = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L698"> .method = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L699"> .target = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L700"> .headers = .{ .allocator = options.allocator, .owned = <span class="tok-null">false</span> },</span>
<span class="line" id="L701"> .parser = <span class="tok-kw">switch</span> (options.header_strategy) {</span>
<span class="line" id="L702"> .dynamic => |max| proto.HeadersParser.initDynamic(max),</span>
<span class="line" id="L703"> .static => |buf| proto.HeadersParser.initStatic(buf),</span>
<span class="line" id="L704"> },</span>
<span class="line" id="L705"> },</span>
<span class="line" id="L706"> };</span>
<span class="line" id="L707">}</span>
<span class="line" id="L708"></span>
<span class="line" id="L709"><span class="tok-kw">test</span> <span class="tok-str">"HTTP server handles a chunked transfer coding request"</span> {</span>
<span class="line" id="L710"> <span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L711"></span>
<span class="line" id="L712"> <span class="tok-comment">// This test requires spawning threads.</span>
</span>
<span class="line" id="L713"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L714"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L715"> }</span>
<span class="line" id="L716"></span>
<span class="line" id="L717"> <span class="tok-kw">const</span> native_endian = <span class="tok-kw">comptime</span> builtin.cpu.arch.endian();</span>
<span class="line" id="L718"> <span class="tok-kw">if</span> (builtin.zig_backend == .stage2_llvm <span class="tok-kw">and</span> native_endian == .Big) {</span>
<span class="line" id="L719"> <span class="tok-comment">// https://github.com/ziglang/zig/issues/13782</span>
</span>
<span class="line" id="L720"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L721"> }</span>
<span class="line" id="L722"></span>
<span class="line" id="L723"> <span class="tok-kw">if</span> (builtin.os.tag == .wasi) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L724"></span>
<span class="line" id="L725"> <span class="tok-kw">const</span> allocator = std.testing.allocator;</span>
<span class="line" id="L726"> <span class="tok-kw">const</span> expect = std.testing.expect;</span>
<span class="line" id="L727"></span>
<span class="line" id="L728"> <span class="tok-kw">const</span> max_header_size = <span class="tok-number">8192</span>;</span>
<span class="line" id="L729"> <span class="tok-kw">var</span> server = std.http.Server.init(allocator, .{ .reuse_address = <span class="tok-null">true</span> });</span>
<span class="line" id="L730"> <span class="tok-kw">defer</span> server.deinit();</span>
<span class="line" id="L731"></span>
<span class="line" id="L732"> <span class="tok-kw">const</span> address = <span class="tok-kw">try</span> std.net.Address.parseIp(<span class="tok-str">"127.0.0.1"</span>, <span class="tok-number">0</span>);</span>
<span class="line" id="L733"> <span class="tok-kw">try</span> server.listen(address);</span>
<span class="line" id="L734"> <span class="tok-kw">const</span> server_port = server.socket.listen_address.in.getPort();</span>
<span class="line" id="L735"></span>
<span class="line" id="L736"> <span class="tok-kw">const</span> server_thread = <span class="tok-kw">try</span> std.Thread.spawn(.{}, (<span class="tok-kw">struct</span> {</span>
<span class="line" id="L737"> <span class="tok-kw">fn</span> <span class="tok-fn">apply</span>(s: *std.http.Server) !<span class="tok-type">void</span> {</span>
<span class="line" id="L738"> <span class="tok-kw">const</span> res = <span class="tok-kw">try</span> s.accept(.{ .dynamic = max_header_size });</span>
<span class="line" id="L739"> <span class="tok-kw">defer</span> res.deinit();</span>
<span class="line" id="L740"> <span class="tok-kw">defer</span> res.reset();</span>
<span class="line" id="L741"> <span class="tok-kw">try</span> res.wait();</span>
<span class="line" id="L742"></span>
<span class="line" id="L743"> <span class="tok-kw">try</span> expect(res.request.transfer_encoding.? == .chunked);</span>
<span class="line" id="L744"></span>
<span class="line" id="L745"> <span class="tok-kw">const</span> server_body: []<span class="tok-kw">const</span> <span class="tok-type">u8</span> = <span class="tok-str">"message from server!\n"</span>;</span>
<span class="line" id="L746"> res.transfer_encoding = .{ .content_length = server_body.len };</span>
<span class="line" id="L747"> <span class="tok-kw">try</span> res.headers.append(<span class="tok-str">"content-type"</span>, <span class="tok-str">"text/plain"</span>);</span>
<span class="line" id="L748"> <span class="tok-kw">try</span> res.headers.append(<span class="tok-str">"connection"</span>, <span class="tok-str">"close"</span>);</span>
<span class="line" id="L749"> <span class="tok-kw">try</span> res.do();</span>
<span class="line" id="L750"></span>
<span class="line" id="L751"> <span class="tok-kw">var</span> buf: [<span class="tok-number">128</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L752"> <span class="tok-kw">const</span> n = <span class="tok-kw">try</span> res.readAll(&buf);</span>
<span class="line" id="L753"> <span class="tok-kw">try</span> expect(std.mem.eql(<span class="tok-type">u8</span>, buf[<span class="tok-number">0</span>..n], <span class="tok-str">"ABCD"</span>));</span>
<span class="line" id="L754"> _ = <span class="tok-kw">try</span> res.writer().writeAll(server_body);</span>
<span class="line" id="L755"> <span class="tok-kw">try</span> res.finish();</span>
<span class="line" id="L756"> }</span>
<span class="line" id="L757"> }).apply, .{&server});</span>
<span class="line" id="L758"></span>
<span class="line" id="L759"> <span class="tok-kw">const</span> request_bytes =</span>
<span class="line" id="L760"> <span class="tok-str">"POST / HTTP/1.1\r\n"</span> ++</span>
<span class="line" id="L761"> <span class="tok-str">"Content-Type: text/plain\r\n"</span> ++</span>
<span class="line" id="L762"> <span class="tok-str">"Transfer-Encoding: chunked\r\n"</span> ++</span>
<span class="line" id="L763"> <span class="tok-str">"\r\n"</span> ++</span>
<span class="line" id="L764"> <span class="tok-str">"1\r\n"</span> ++</span>
<span class="line" id="L765"> <span class="tok-str">"A\r\n"</span> ++</span>
<span class="line" id="L766"> <span class="tok-str">"1\r\n"</span> ++</span>
<span class="line" id="L767"> <span class="tok-str">"B\r\n"</span> ++</span>
<span class="line" id="L768"> <span class="tok-str">"2\r\n"</span> ++</span>
<span class="line" id="L769"> <span class="tok-str">"CD\r\n"</span> ++</span>
<span class="line" id="L770"> <span class="tok-str">"0\r\n"</span> ++</span>
<span class="line" id="L771"> <span class="tok-str">"\r\n"</span>;</span>
<span class="line" id="L772"></span>
<span class="line" id="L773"> <span class="tok-kw">const</span> stream = <span class="tok-kw">try</span> std.net.tcpConnectToHost(allocator, <span class="tok-str">"127.0.0.1"</span>, server_port);</span>
<span class="line" id="L774"> <span class="tok-kw">defer</span> stream.close();</span>
<span class="line" id="L775"> _ = <span class="tok-kw">try</span> stream.writeAll(request_bytes[<span class="tok-number">0</span>..]);</span>
<span class="line" id="L776"></span>
<span class="line" id="L777"> server_thread.join();</span>
<span class="line" id="L778">}</span>
<span class="line" id="L779"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! Connecting and opening requests are threadsafe. Individual requests are not.</span></span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L4"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> http = std.http;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> net = std.net;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> Uri = std.Uri;</span>
<span class="line" id="L9"><span class="tok-kw">const</span> Allocator = mem.Allocator;</span>
<span class="line" id="L10"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"><span class="tok-kw">const</span> Client = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L13"><span class="tok-kw">const</span> proto = <span class="tok-builtin">@import</span>(<span class="tok-str">"protocol.zig"</span>);</span>
<span class="line" id="L14"></span>
<span class="line" id="L15"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> default_connection_pool_size = <span class="tok-number">32</span>;</span>
<span class="line" id="L16"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> connection_pool_size = std.options.http_connection_pool_size;</span>
<span class="line" id="L17"></span>
<span class="line" id="L18">allocator: Allocator,</span>
<span class="line" id="L19">ca_bundle: std.crypto.Certificate.Bundle = .{},</span>
<span class="line" id="L20">ca_bundle_mutex: std.Thread.Mutex = .{},</span>
<span class="line" id="L21"><span class="tok-comment">/// When this is `true`, the next time this client performs an HTTPS request,</span></span>
<span class="line" id="L22"><span class="tok-comment">/// it will first rescan the system for root certificates.</span></span>
<span class="line" id="L23">next_https_rescan_certs: <span class="tok-type">bool</span> = <span class="tok-null">true</span>,</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"><span class="tok-comment">/// The pool of connections that can be reused (and currently in use).</span></span>
<span class="line" id="L26">connection_pool: ConnectionPool = .{},</span>
<span class="line" id="L27"></span>
<span class="line" id="L28">proxy: ?HttpProxy = <span class="tok-null">null</span>,</span>
<span class="line" id="L29"></span>
<span class="line" id="L30"><span class="tok-comment">/// A set of linked lists of connections that can be reused.</span></span>
<span class="line" id="L31"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ConnectionPool = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L32"> <span class="tok-comment">/// The criteria for a connection to be considered a match.</span></span>
<span class="line" id="L33"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Criteria = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L34"> host: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L35"> port: <span class="tok-type">u16</span>,</span>
<span class="line" id="L36"> is_tls: <span class="tok-type">bool</span>,</span>
<span class="line" id="L37"> };</span>
<span class="line" id="L38"></span>
<span class="line" id="L39"> <span class="tok-kw">const</span> Queue = std.TailQueue(Connection);</span>
<span class="line" id="L40"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Node = Queue.Node;</span>
<span class="line" id="L41"></span>
<span class="line" id="L42"> mutex: std.Thread.Mutex = .{},</span>
<span class="line" id="L43"> <span class="tok-comment">/// Open connections that are currently in use.</span></span>
<span class="line" id="L44"> used: Queue = .{},</span>
<span class="line" id="L45"> <span class="tok-comment">/// Open connections that are not currently in use.</span></span>
<span class="line" id="L46"> free: Queue = .{},</span>
<span class="line" id="L47"> free_len: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L48"> free_size: <span class="tok-type">usize</span> = connection_pool_size,</span>
<span class="line" id="L49"></span>
<span class="line" id="L50"> <span class="tok-comment">/// Finds and acquires a connection from the connection pool matching the criteria. This function is threadsafe.</span></span>
<span class="line" id="L51"> <span class="tok-comment">/// If no connection is found, null is returned.</span></span>
<span class="line" id="L52"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">findConnection</span>(pool: *ConnectionPool, criteria: Criteria) ?*Node {</span>
<span class="line" id="L53"> pool.mutex.lock();</span>
<span class="line" id="L54"> <span class="tok-kw">defer</span> pool.mutex.unlock();</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"> <span class="tok-kw">var</span> next = pool.free.last;</span>
<span class="line" id="L57"> <span class="tok-kw">while</span> (next) |node| : (next = node.prev) {</span>
<span class="line" id="L58"> <span class="tok-kw">if</span> ((node.data.protocol == .tls) != criteria.is_tls) <span class="tok-kw">continue</span>;</span>
<span class="line" id="L59"> <span class="tok-kw">if</span> (node.data.port != criteria.port) <span class="tok-kw">continue</span>;</span>
<span class="line" id="L60"> <span class="tok-kw">if</span> (!mem.eql(<span class="tok-type">u8</span>, node.data.host, criteria.host)) <span class="tok-kw">continue</span>;</span>
<span class="line" id="L61"></span>
<span class="line" id="L62"> pool.acquireUnsafe(node);</span>
<span class="line" id="L63"> <span class="tok-kw">return</span> node;</span>
<span class="line" id="L64"> }</span>
<span class="line" id="L65"></span>
<span class="line" id="L66"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L67"> }</span>
<span class="line" id="L68"></span>
<span class="line" id="L69"> <span class="tok-comment">/// Acquires an existing connection from the connection pool. This function is not threadsafe.</span></span>
<span class="line" id="L70"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">acquireUnsafe</span>(pool: *ConnectionPool, node: *Node) <span class="tok-type">void</span> {</span>
<span class="line" id="L71"> pool.free.remove(node);</span>
<span class="line" id="L72"> pool.free_len -= <span class="tok-number">1</span>;</span>
<span class="line" id="L73"></span>
<span class="line" id="L74"> pool.used.append(node);</span>
<span class="line" id="L75"> }</span>
<span class="line" id="L76"></span>
<span class="line" id="L77"> <span class="tok-comment">/// Acquires an existing connection from the connection pool. This function is threadsafe.</span></span>
<span class="line" id="L78"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">acquire</span>(pool: *ConnectionPool, node: *Node) <span class="tok-type">void</span> {</span>
<span class="line" id="L79"> pool.mutex.lock();</span>
<span class="line" id="L80"> <span class="tok-kw">defer</span> pool.mutex.unlock();</span>
<span class="line" id="L81"></span>
<span class="line" id="L82"> <span class="tok-kw">return</span> pool.acquireUnsafe(node);</span>
<span class="line" id="L83"> }</span>
<span class="line" id="L84"></span>
<span class="line" id="L85"> <span class="tok-comment">/// Tries to release a connection back to the connection pool. This function is threadsafe.</span></span>
<span class="line" id="L86"> <span class="tok-comment">/// If the connection is marked as closing, it will be closed instead.</span></span>
<span class="line" id="L87"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">release</span>(pool: *ConnectionPool, client: *Client, node: *Node) <span class="tok-type">void</span> {</span>
<span class="line" id="L88"> pool.mutex.lock();</span>
<span class="line" id="L89"> <span class="tok-kw">defer</span> pool.mutex.unlock();</span>
<span class="line" id="L90"></span>
<span class="line" id="L91"> pool.used.remove(node);</span>
<span class="line" id="L92"></span>
<span class="line" id="L93"> <span class="tok-kw">if</span> (node.data.closing) {</span>
<span class="line" id="L94"> node.data.deinit(client);</span>
<span class="line" id="L95"> <span class="tok-kw">return</span> client.allocator.destroy(node);</span>
<span class="line" id="L96"> }</span>
<span class="line" id="L97"></span>
<span class="line" id="L98"> <span class="tok-kw">if</span> (pool.free_len >= pool.free_size) {</span>
<span class="line" id="L99"> <span class="tok-kw">const</span> popped = pool.free.popFirst() <span class="tok-kw">orelse</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L100"> pool.free_len -= <span class="tok-number">1</span>;</span>
<span class="line" id="L101"></span>
<span class="line" id="L102"> popped.data.deinit(client);</span>
<span class="line" id="L103"> client.allocator.destroy(popped);</span>
<span class="line" id="L104"> }</span>
<span class="line" id="L105"></span>
<span class="line" id="L106"> <span class="tok-kw">if</span> (node.data.proxied) {</span>
<span class="line" id="L107"> pool.free.prepend(node); <span class="tok-comment">// proxied connections go to the end of the queue, always try direct connections first</span>
</span>
<span class="line" id="L108"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L109"> pool.free.append(node);</span>
<span class="line" id="L110"> }</span>
<span class="line" id="L111"></span>
<span class="line" id="L112"> pool.free_len += <span class="tok-number">1</span>;</span>
<span class="line" id="L113"> }</span>
<span class="line" id="L114"></span>
<span class="line" id="L115"> <span class="tok-comment">/// Adds a newly created node to the pool of used connections. This function is threadsafe.</span></span>
<span class="line" id="L116"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addUsed</span>(pool: *ConnectionPool, node: *Node) <span class="tok-type">void</span> {</span>
<span class="line" id="L117"> pool.mutex.lock();</span>
<span class="line" id="L118"> <span class="tok-kw">defer</span> pool.mutex.unlock();</span>
<span class="line" id="L119"></span>
<span class="line" id="L120"> pool.used.append(node);</span>
<span class="line" id="L121"> }</span>
<span class="line" id="L122"></span>
<span class="line" id="L123"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(pool: *ConnectionPool, client: *Client) <span class="tok-type">void</span> {</span>
<span class="line" id="L124"> pool.mutex.lock();</span>
<span class="line" id="L125"></span>
<span class="line" id="L126"> <span class="tok-kw">var</span> next = pool.free.first;</span>
<span class="line" id="L127"> <span class="tok-kw">while</span> (next) |node| {</span>
<span class="line" id="L128"> <span class="tok-kw">defer</span> client.allocator.destroy(node);</span>
<span class="line" id="L129"> next = node.next;</span>
<span class="line" id="L130"></span>
<span class="line" id="L131"> node.data.deinit(client);</span>
<span class="line" id="L132"> }</span>
<span class="line" id="L133"></span>
<span class="line" id="L134"> next = pool.used.first;</span>
<span class="line" id="L135"> <span class="tok-kw">while</span> (next) |node| {</span>
<span class="line" id="L136"> <span class="tok-kw">defer</span> client.allocator.destroy(node);</span>
<span class="line" id="L137"> next = node.next;</span>
<span class="line" id="L138"></span>
<span class="line" id="L139"> node.data.deinit(client);</span>
<span class="line" id="L140"> }</span>
<span class="line" id="L141"></span>
<span class="line" id="L142"> pool.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L143"> }</span>
<span class="line" id="L144">};</span>
<span class="line" id="L145"></span>
<span class="line" id="L146"><span class="tok-comment">/// An interface to either a plain or TLS connection.</span></span>
<span class="line" id="L147"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Connection = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L148"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> buffer_size = std.crypto.tls.max_ciphertext_record_len;</span>
<span class="line" id="L149"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Protocol = <span class="tok-kw">enum</span> { plain, tls };</span>
<span class="line" id="L150"></span>
<span class="line" id="L151"> stream: net.Stream,</span>
<span class="line" id="L152"> <span class="tok-comment">/// undefined unless protocol is tls.</span></span>
<span class="line" id="L153"> tls_client: *std.crypto.tls.Client,</span>
<span class="line" id="L154"></span>
<span class="line" id="L155"> protocol: Protocol,</span>
<span class="line" id="L156"> host: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L157"> port: <span class="tok-type">u16</span>,</span>
<span class="line" id="L158"></span>
<span class="line" id="L159"> proxied: <span class="tok-type">bool</span> = <span class="tok-null">false</span>,</span>
<span class="line" id="L160"> closing: <span class="tok-type">bool</span> = <span class="tok-null">false</span>,</span>
<span class="line" id="L161"></span>
<span class="line" id="L162"> read_start: <span class="tok-type">u16</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L163"> read_end: <span class="tok-type">u16</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L164"> read_buf: [buffer_size]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L165"></span>
<span class="line" id="L166"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">rawReadAtLeast</span>(conn: *Connection, buffer: []<span class="tok-type">u8</span>, len: <span class="tok-type">usize</span>) ReadError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L167"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (conn.protocol) {</span>
<span class="line" id="L168"> .plain => conn.stream.readAtLeast(buffer, len),</span>
<span class="line" id="L169"> .tls => conn.tls_client.readAtLeast(conn.stream, buffer, len),</span>
<span class="line" id="L170"> } <span class="tok-kw">catch</span> |err| {</span>
<span class="line" id="L171"> <span class="tok-comment">// TODO: https://github.com/ziglang/zig/issues/2473</span>
</span>
<span class="line" id="L172"> <span class="tok-kw">if</span> (mem.startsWith(<span class="tok-type">u8</span>, <span class="tok-builtin">@errorName</span>(err), <span class="tok-str">"TlsAlert"</span>)) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.TlsAlert;</span>
<span class="line" id="L173"></span>
<span class="line" id="L174"> <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L175"> <span class="tok-kw">error</span>.TlsConnectionTruncated, <span class="tok-kw">error</span>.TlsRecordOverflow, <span class="tok-kw">error</span>.TlsDecodeError, <span class="tok-kw">error</span>.TlsBadRecordMac, <span class="tok-kw">error</span>.TlsBadLength, <span class="tok-kw">error</span>.TlsIllegalParameter, <span class="tok-kw">error</span>.TlsUnexpectedMessage => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.TlsFailure,</span>
<span class="line" id="L176"> <span class="tok-kw">error</span>.ConnectionTimedOut => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ConnectionTimedOut,</span>
<span class="line" id="L177"> <span class="tok-kw">error</span>.ConnectionResetByPeer, <span class="tok-kw">error</span>.BrokenPipe => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ConnectionResetByPeer,</span>
<span class="line" id="L178"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnexpectedReadFailure,</span>
<span class="line" id="L179"> }</span>
<span class="line" id="L180"> };</span>
<span class="line" id="L181"> }</span>
<span class="line" id="L182"></span>
<span class="line" id="L183"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fill</span>(conn: *Connection) ReadError!<span class="tok-type">void</span> {</span>
<span class="line" id="L184"> <span class="tok-kw">if</span> (conn.read_end != conn.read_start) <span class="tok-kw">return</span>;</span>
<span class="line" id="L185"></span>
<span class="line" id="L186"> <span class="tok-kw">const</span> nread = <span class="tok-kw">try</span> conn.rawReadAtLeast(conn.read_buf[<span class="tok-number">0</span>..], <span class="tok-number">1</span>);</span>
<span class="line" id="L187"> <span class="tok-kw">if</span> (nread == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.EndOfStream;</span>
<span class="line" id="L188"> conn.read_start = <span class="tok-number">0</span>;</span>
<span class="line" id="L189"> conn.read_end = <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(nread));</span>
<span class="line" id="L190"> }</span>
<span class="line" id="L191"></span>
<span class="line" id="L192"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">peek</span>(conn: *Connection) []<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L193"> <span class="tok-kw">return</span> conn.read_buf[conn.read_start..conn.read_end];</span>
<span class="line" id="L194"> }</span>
<span class="line" id="L195"></span>
<span class="line" id="L196"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">drop</span>(conn: *Connection, num: <span class="tok-type">u16</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L197"> conn.read_start += num;</span>
<span class="line" id="L198"> }</span>
<span class="line" id="L199"></span>
<span class="line" id="L200"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">readAtLeast</span>(conn: *Connection, buffer: []<span class="tok-type">u8</span>, len: <span class="tok-type">usize</span>) ReadError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L201"> assert(len <= buffer.len);</span>
<span class="line" id="L202"></span>
<span class="line" id="L203"> <span class="tok-kw">var</span> out_index: <span class="tok-type">u16</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L204"> <span class="tok-kw">while</span> (out_index < len) {</span>
<span class="line" id="L205"> <span class="tok-kw">const</span> available_read = conn.read_end - conn.read_start;</span>
<span class="line" id="L206"> <span class="tok-kw">const</span> available_buffer = buffer.len - out_index;</span>
<span class="line" id="L207"></span>
<span class="line" id="L208"> <span class="tok-kw">if</span> (available_read > available_buffer) { <span class="tok-comment">// partially read buffered data</span>
</span>
<span class="line" id="L209"> <span class="tok-builtin">@memcpy</span>(buffer[out_index..], conn.read_buf[conn.read_start..conn.read_end][<span class="tok-number">0</span>..available_buffer]);</span>
<span class="line" id="L210"> out_index += <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(available_buffer));</span>
<span class="line" id="L211"> conn.read_start += <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(available_buffer));</span>
<span class="line" id="L212"></span>
<span class="line" id="L213"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L214"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (available_read > <span class="tok-number">0</span>) { <span class="tok-comment">// fully read buffered data</span>
</span>
<span class="line" id="L215"> <span class="tok-builtin">@memcpy</span>(buffer[out_index..][<span class="tok-number">0</span>..available_read], conn.read_buf[conn.read_start..conn.read_end]);</span>
<span class="line" id="L216"> out_index += available_read;</span>
<span class="line" id="L217"> conn.read_start += available_read;</span>
<span class="line" id="L218"></span>
<span class="line" id="L219"> <span class="tok-kw">if</span> (out_index >= len) <span class="tok-kw">break</span>;</span>
<span class="line" id="L220"> }</span>
<span class="line" id="L221"></span>
<span class="line" id="L222"> <span class="tok-kw">const</span> leftover_buffer = available_buffer - available_read;</span>
<span class="line" id="L223"> <span class="tok-kw">const</span> leftover_len = len - out_index;</span>
<span class="line" id="L224"></span>
<span class="line" id="L225"> <span class="tok-kw">if</span> (leftover_buffer > conn.read_buf.len) {</span>
<span class="line" id="L226"> <span class="tok-comment">// skip the buffer if the output is large enough</span>
</span>
<span class="line" id="L227"> <span class="tok-kw">return</span> conn.rawReadAtLeast(buffer[out_index..], leftover_len);</span>
<span class="line" id="L228"> }</span>
<span class="line" id="L229"></span>
<span class="line" id="L230"> <span class="tok-kw">try</span> conn.fill();</span>
<span class="line" id="L231"> }</span>
<span class="line" id="L232"></span>
<span class="line" id="L233"> <span class="tok-kw">return</span> out_index;</span>
<span class="line" id="L234"> }</span>
<span class="line" id="L235"></span>
<span class="line" id="L236"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">read</span>(conn: *Connection, buffer: []<span class="tok-type">u8</span>) ReadError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L237"> <span class="tok-kw">return</span> conn.readAtLeast(buffer, <span class="tok-number">1</span>);</span>
<span class="line" id="L238"> }</span>
<span class="line" id="L239"></span>
<span class="line" id="L240"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ReadError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L241"> TlsFailure,</span>
<span class="line" id="L242"> TlsAlert,</span>
<span class="line" id="L243"> ConnectionTimedOut,</span>
<span class="line" id="L244"> ConnectionResetByPeer,</span>
<span class="line" id="L245"> UnexpectedReadFailure,</span>
<span class="line" id="L246"> EndOfStream,</span>
<span class="line" id="L247"> };</span>
<span class="line" id="L248"></span>
<span class="line" id="L249"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Reader = std.io.Reader(*Connection, ReadError, read);</span>
<span class="line" id="L250"></span>
<span class="line" id="L251"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reader</span>(conn: *Connection) Reader {</span>
<span class="line" id="L252"> <span class="tok-kw">return</span> Reader{ .context = conn };</span>
<span class="line" id="L253"> }</span>
<span class="line" id="L254"></span>
<span class="line" id="L255"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">writeAll</span>(conn: *Connection, buffer: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L256"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (conn.protocol) {</span>
<span class="line" id="L257"> .plain => conn.stream.writeAll(buffer),</span>
<span class="line" id="L258"> .tls => conn.tls_client.writeAll(conn.stream, buffer),</span>
<span class="line" id="L259"> } <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L260"> <span class="tok-kw">error</span>.BrokenPipe, <span class="tok-kw">error</span>.ConnectionResetByPeer => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ConnectionResetByPeer,</span>
<span class="line" id="L261"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnexpectedWriteFailure,</span>
<span class="line" id="L262"> };</span>
<span class="line" id="L263"> }</span>
<span class="line" id="L264"></span>
<span class="line" id="L265"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">write</span>(conn: *Connection, buffer: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">usize</span> {</span>
<span class="line" id="L266"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (conn.protocol) {</span>
<span class="line" id="L267"> .plain => conn.stream.write(buffer),</span>
<span class="line" id="L268"> .tls => conn.tls_client.write(conn.stream, buffer),</span>
<span class="line" id="L269"> } <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L270"> <span class="tok-kw">error</span>.BrokenPipe, <span class="tok-kw">error</span>.ConnectionResetByPeer => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ConnectionResetByPeer,</span>
<span class="line" id="L271"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnexpectedWriteFailure,</span>
<span class="line" id="L272"> };</span>
<span class="line" id="L273"> }</span>
<span class="line" id="L274"></span>
<span class="line" id="L275"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> WriteError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L276"> ConnectionResetByPeer,</span>
<span class="line" id="L277"> UnexpectedWriteFailure,</span>
<span class="line" id="L278"> };</span>
<span class="line" id="L279"></span>
<span class="line" id="L280"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Writer = std.io.Writer(*Connection, WriteError, write);</span>
<span class="line" id="L281"></span>
<span class="line" id="L282"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">writer</span>(conn: *Connection) Writer {</span>
<span class="line" id="L283"> <span class="tok-kw">return</span> Writer{ .context = conn };</span>
<span class="line" id="L284"> }</span>
<span class="line" id="L285"></span>
<span class="line" id="L286"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">close</span>(conn: *Connection, client: *<span class="tok-kw">const</span> Client) <span class="tok-type">void</span> {</span>
<span class="line" id="L287"> <span class="tok-kw">if</span> (conn.protocol == .tls) {</span>
<span class="line" id="L288"> <span class="tok-comment">// try to cleanly close the TLS connection, for any server that cares.</span>
</span>
<span class="line" id="L289"> _ = conn.tls_client.writeEnd(conn.stream, <span class="tok-str">""</span>, <span class="tok-null">true</span>) <span class="tok-kw">catch</span> {};</span>
<span class="line" id="L290"> client.allocator.destroy(conn.tls_client);</span>
<span class="line" id="L291"> }</span>
<span class="line" id="L292"></span>
<span class="line" id="L293"> conn.stream.close();</span>
<span class="line" id="L294"> }</span>
<span class="line" id="L295"></span>
<span class="line" id="L296"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(conn: *Connection, client: *<span class="tok-kw">const</span> Client) <span class="tok-type">void</span> {</span>
<span class="line" id="L297"> conn.close(client);</span>
<span class="line" id="L298"> client.allocator.free(conn.host);</span>
<span class="line" id="L299"> }</span>
<span class="line" id="L300">};</span>
<span class="line" id="L301"></span>
<span class="line" id="L302"><span class="tok-comment">/// The mode of transport for requests.</span></span>
<span class="line" id="L303"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> RequestTransfer = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L304"> content_length: <span class="tok-type">u64</span>,</span>
<span class="line" id="L305"> chunked: <span class="tok-type">void</span>,</span>
<span class="line" id="L306"> none: <span class="tok-type">void</span>,</span>
<span class="line" id="L307">};</span>
<span class="line" id="L308"></span>
<span class="line" id="L309"><span class="tok-comment">/// The decompressor for response messages.</span></span>
<span class="line" id="L310"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Compression = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L311"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> DeflateDecompressor = std.compress.zlib.DecompressStream(Request.TransferReader);</span>
<span class="line" id="L312"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> GzipDecompressor = std.compress.gzip.Decompress(Request.TransferReader);</span>
<span class="line" id="L313"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ZstdDecompressor = std.compress.zstd.DecompressStream(Request.TransferReader, .{});</span>
<span class="line" id="L314"></span>
<span class="line" id="L315"> deflate: DeflateDecompressor,</span>
<span class="line" id="L316"> gzip: GzipDecompressor,</span>
<span class="line" id="L317"> zstd: ZstdDecompressor,</span>
<span class="line" id="L318"> none: <span class="tok-type">void</span>,</span>
<span class="line" id="L319">};</span>
<span class="line" id="L320"></span>
<span class="line" id="L321"><span class="tok-comment">/// A HTTP response originating from a server.</span></span>
<span class="line" id="L322"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Response = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L323"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ParseError = Allocator.Error || <span class="tok-kw">error</span>{</span>
<span class="line" id="L324"> HttpHeadersInvalid,</span>
<span class="line" id="L325"> HttpHeaderContinuationsUnsupported,</span>
<span class="line" id="L326"> HttpTransferEncodingUnsupported,</span>
<span class="line" id="L327"> HttpConnectionHeaderUnsupported,</span>
<span class="line" id="L328"> InvalidContentLength,</span>
<span class="line" id="L329"> CompressionNotSupported,</span>
<span class="line" id="L330"> };</span>
<span class="line" id="L331"></span>
<span class="line" id="L332"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parse</span>(res: *Response, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, trailing: <span class="tok-type">bool</span>) ParseError!<span class="tok-type">void</span> {</span>
<span class="line" id="L333"> <span class="tok-kw">var</span> it = mem.tokenizeAny(<span class="tok-type">u8</span>, bytes[<span class="tok-number">0</span> .. bytes.len - <span class="tok-number">4</span>], <span class="tok-str">"\r\n"</span>);</span>
<span class="line" id="L334"></span>
<span class="line" id="L335"> <span class="tok-kw">const</span> first_line = it.next() <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L336"> <span class="tok-kw">if</span> (first_line.len < <span class="tok-number">12</span>)</span>
<span class="line" id="L337"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L338"></span>
<span class="line" id="L339"> <span class="tok-kw">const</span> version: http.Version = <span class="tok-kw">switch</span> (int64(first_line[<span class="tok-number">0</span>..<span class="tok-number">8</span>])) {</span>
<span class="line" id="L340"> int64(<span class="tok-str">"HTTP/1.0"</span>) => .@"HTTP/1.0",</span>
<span class="line" id="L341"> int64(<span class="tok-str">"HTTP/1.1"</span>) => .@"HTTP/1.1",</span>
<span class="line" id="L342"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid,</span>
<span class="line" id="L343"> };</span>
<span class="line" id="L344"> <span class="tok-kw">if</span> (first_line[<span class="tok-number">8</span>] != <span class="tok-str">' '</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L345"> <span class="tok-kw">const</span> status = <span class="tok-builtin">@as</span>(http.Status, <span class="tok-builtin">@enumFromInt</span>(parseInt3(first_line[<span class="tok-number">9</span>..<span class="tok-number">12</span>].*)));</span>
<span class="line" id="L346"> <span class="tok-kw">const</span> reason = mem.trimLeft(<span class="tok-type">u8</span>, first_line[<span class="tok-number">12</span>..], <span class="tok-str">" "</span>);</span>
<span class="line" id="L347"></span>
<span class="line" id="L348"> res.version = version;</span>
<span class="line" id="L349"> res.status = status;</span>
<span class="line" id="L350"> res.reason = reason;</span>
<span class="line" id="L351"></span>
<span class="line" id="L352"> <span class="tok-kw">while</span> (it.next()) |line| {</span>
<span class="line" id="L353"> <span class="tok-kw">if</span> (line.len == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L354"> <span class="tok-kw">switch</span> (line[<span class="tok-number">0</span>]) {</span>
<span class="line" id="L355"> <span class="tok-str">' '</span>, <span class="tok-str">'\t'</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeaderContinuationsUnsupported,</span>
<span class="line" id="L356"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L357"> }</span>
<span class="line" id="L358"></span>
<span class="line" id="L359"> <span class="tok-kw">var</span> line_it = mem.tokenizeAny(<span class="tok-type">u8</span>, line, <span class="tok-str">": "</span>);</span>
<span class="line" id="L360"> <span class="tok-kw">const</span> header_name = line_it.next() <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L361"> <span class="tok-kw">const</span> header_value = line_it.rest();</span>
<span class="line" id="L362"></span>
<span class="line" id="L363"> <span class="tok-kw">try</span> res.headers.append(header_name, header_value);</span>
<span class="line" id="L364"></span>
<span class="line" id="L365"> <span class="tok-kw">if</span> (trailing) <span class="tok-kw">continue</span>;</span>
<span class="line" id="L366"></span>
<span class="line" id="L367"> <span class="tok-kw">if</span> (std.ascii.eqlIgnoreCase(header_name, <span class="tok-str">"content-length"</span>)) {</span>
<span class="line" id="L368"> <span class="tok-kw">if</span> (res.content_length != <span class="tok-null">null</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L369"> res.content_length = std.fmt.parseInt(<span class="tok-type">u64</span>, header_value, <span class="tok-number">10</span>) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidContentLength;</span>
<span class="line" id="L370"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (std.ascii.eqlIgnoreCase(header_name, <span class="tok-str">"transfer-encoding"</span>)) {</span>
<span class="line" id="L371"> <span class="tok-comment">// Transfer-Encoding: second, first</span>
</span>
<span class="line" id="L372"> <span class="tok-comment">// Transfer-Encoding: deflate, chunked</span>
</span>
<span class="line" id="L373"> <span class="tok-kw">var</span> iter = mem.splitBackwardsScalar(<span class="tok-type">u8</span>, header_value, <span class="tok-str">','</span>);</span>
<span class="line" id="L374"></span>
<span class="line" id="L375"> <span class="tok-kw">if</span> (iter.next()) |first| {</span>
<span class="line" id="L376"> <span class="tok-kw">const</span> trimmed = mem.trim(<span class="tok-type">u8</span>, first, <span class="tok-str">" "</span>);</span>
<span class="line" id="L377"></span>
<span class="line" id="L378"> <span class="tok-kw">if</span> (std.meta.stringToEnum(http.TransferEncoding, trimmed)) |te| {</span>
<span class="line" id="L379"> <span class="tok-kw">if</span> (res.transfer_encoding != <span class="tok-null">null</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L380"> res.transfer_encoding = te;</span>
<span class="line" id="L381"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (std.meta.stringToEnum(http.ContentEncoding, trimmed)) |ce| {</span>
<span class="line" id="L382"> <span class="tok-kw">if</span> (res.transfer_compression != <span class="tok-null">null</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L383"> res.transfer_compression = ce;</span>
<span class="line" id="L384"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L385"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpTransferEncodingUnsupported;</span>
<span class="line" id="L386"> }</span>
<span class="line" id="L387"> }</span>
<span class="line" id="L388"></span>
<span class="line" id="L389"> <span class="tok-kw">if</span> (iter.next()) |second| {</span>
<span class="line" id="L390"> <span class="tok-kw">if</span> (res.transfer_compression != <span class="tok-null">null</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpTransferEncodingUnsupported;</span>
<span class="line" id="L391"></span>
<span class="line" id="L392"> <span class="tok-kw">const</span> trimmed = mem.trim(<span class="tok-type">u8</span>, second, <span class="tok-str">" "</span>);</span>
<span class="line" id="L393"></span>
<span class="line" id="L394"> <span class="tok-kw">if</span> (std.meta.stringToEnum(http.ContentEncoding, trimmed)) |ce| {</span>
<span class="line" id="L395"> res.transfer_compression = ce;</span>
<span class="line" id="L396"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L397"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpTransferEncodingUnsupported;</span>
<span class="line" id="L398"> }</span>
<span class="line" id="L399"> }</span>
<span class="line" id="L400"></span>
<span class="line" id="L401"> <span class="tok-kw">if</span> (iter.next()) |_| <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpTransferEncodingUnsupported;</span>
<span class="line" id="L402"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (std.ascii.eqlIgnoreCase(header_name, <span class="tok-str">"content-encoding"</span>)) {</span>
<span class="line" id="L403"> <span class="tok-kw">if</span> (res.transfer_compression != <span class="tok-null">null</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersInvalid;</span>
<span class="line" id="L404"></span>
<span class="line" id="L405"> <span class="tok-kw">const</span> trimmed = mem.trim(<span class="tok-type">u8</span>, header_value, <span class="tok-str">" "</span>);</span>
<span class="line" id="L406"></span>
<span class="line" id="L407"> <span class="tok-kw">if</span> (std.meta.stringToEnum(http.ContentEncoding, trimmed)) |ce| {</span>
<span class="line" id="L408"> res.transfer_compression = ce;</span>
<span class="line" id="L409"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L410"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpTransferEncodingUnsupported;</span>
<span class="line" id="L411"> }</span>
<span class="line" id="L412"> }</span>
<span class="line" id="L413"> }</span>
<span class="line" id="L414"> }</span>
<span class="line" id="L415"></span>
<span class="line" id="L416"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">int64</span>(array: *<span class="tok-kw">const</span> [<span class="tok-number">8</span>]<span class="tok-type">u8</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L417"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@bitCast</span>(array.*));</span>
<span class="line" id="L418"> }</span>
<span class="line" id="L419"></span>
<span class="line" id="L420"> <span class="tok-kw">fn</span> <span class="tok-fn">parseInt3</span>(nnn: <span class="tok-builtin">@Vector</span>(<span class="tok-number">3</span>, <span class="tok-type">u8</span>)) <span class="tok-type">u10</span> {</span>
<span class="line" id="L421"> <span class="tok-kw">const</span> zero: <span class="tok-builtin">@Vector</span>(<span class="tok-number">3</span>, <span class="tok-type">u8</span>) = .{ <span class="tok-str">'0'</span>, <span class="tok-str">'0'</span>, <span class="tok-str">'0'</span> };</span>
<span class="line" id="L422"> <span class="tok-kw">const</span> mmm: <span class="tok-builtin">@Vector</span>(<span class="tok-number">3</span>, <span class="tok-type">u10</span>) = .{ <span class="tok-number">100</span>, <span class="tok-number">10</span>, <span class="tok-number">1</span> };</span>
<span class="line" id="L423"> <span class="tok-kw">return</span> <span class="tok-builtin">@reduce</span>(.Add, <span class="tok-builtin">@as</span>(<span class="tok-builtin">@Vector</span>(<span class="tok-number">3</span>, <span class="tok-type">u10</span>), nnn -% zero) *% mmm);</span>
<span class="line" id="L424"> }</span>
<span class="line" id="L425"></span>
<span class="line" id="L426"> <span class="tok-kw">test</span> parseInt3 {</span>
<span class="line" id="L427"> <span class="tok-kw">const</span> expectEqual = testing.expectEqual;</span>
<span class="line" id="L428"> <span class="tok-kw">try</span> expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u10</span>, <span class="tok-number">0</span>), parseInt3(<span class="tok-str">"000"</span>.*));</span>
<span class="line" id="L429"> <span class="tok-kw">try</span> expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u10</span>, <span class="tok-number">418</span>), parseInt3(<span class="tok-str">"418"</span>.*));</span>
<span class="line" id="L430"> <span class="tok-kw">try</span> expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u10</span>, <span class="tok-number">999</span>), parseInt3(<span class="tok-str">"999"</span>.*));</span>
<span class="line" id="L431"> }</span>
<span class="line" id="L432"></span>
<span class="line" id="L433"> version: http.Version,</span>
<span class="line" id="L434"> status: http.Status,</span>
<span class="line" id="L435"> reason: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L436"></span>
<span class="line" id="L437"> content_length: ?<span class="tok-type">u64</span> = <span class="tok-null">null</span>,</span>
<span class="line" id="L438"> transfer_encoding: ?http.TransferEncoding = <span class="tok-null">null</span>,</span>
<span class="line" id="L439"> transfer_compression: ?http.ContentEncoding = <span class="tok-null">null</span>,</span>
<span class="line" id="L440"></span>
<span class="line" id="L441"> headers: http.Headers,</span>
<span class="line" id="L442"> parser: proto.HeadersParser,</span>
<span class="line" id="L443"> compression: Compression = .none,</span>
<span class="line" id="L444"> skip: <span class="tok-type">bool</span> = <span class="tok-null">false</span>,</span>
<span class="line" id="L445">};</span>
<span class="line" id="L446"></span>
<span class="line" id="L447"><span class="tok-comment">/// A HTTP request that has been sent.</span></span>
<span class="line" id="L448"><span class="tok-comment">///</span></span>
<span class="line" id="L449"><span class="tok-comment">/// Order of operations: request -> start[ -> write -> finish] -> wait -> read</span></span>
<span class="line" id="L450"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Request = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L451"> uri: Uri,</span>
<span class="line" id="L452"> client: *Client,</span>
<span class="line" id="L453"> <span class="tok-comment">/// is null when this connection is released</span></span>
<span class="line" id="L454"> connection: ?*ConnectionPool.Node,</span>
<span class="line" id="L455"></span>
<span class="line" id="L456"> method: http.Method,</span>
<span class="line" id="L457"> version: http.Version = .@"HTTP/1.1",</span>
<span class="line" id="L458"> headers: http.Headers,</span>
<span class="line" id="L459"> transfer_encoding: RequestTransfer = .none,</span>
<span class="line" id="L460"></span>
<span class="line" id="L461"> redirects_left: <span class="tok-type">u32</span>,</span>
<span class="line" id="L462"> handle_redirects: <span class="tok-type">bool</span>,</span>
<span class="line" id="L463"></span>
<span class="line" id="L464"> response: Response,</span>
<span class="line" id="L465"></span>
<span class="line" id="L466"> <span class="tok-comment">/// Used as a allocator for resolving redirects locations.</span></span>
<span class="line" id="L467"> arena: std.heap.ArenaAllocator,</span>
<span class="line" id="L468"></span>
<span class="line" id="L469"> <span class="tok-comment">/// Frees all resources associated with the request.</span></span>
<span class="line" id="L470"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(req: *Request) <span class="tok-type">void</span> {</span>
<span class="line" id="L471"> <span class="tok-kw">switch</span> (req.response.compression) {</span>
<span class="line" id="L472"> .none => {},</span>
<span class="line" id="L473"> .deflate => |*deflate| deflate.deinit(),</span>
<span class="line" id="L474"> .gzip => |*gzip| gzip.deinit(),</span>
<span class="line" id="L475"> .zstd => |*zstd| zstd.deinit(),</span>
<span class="line" id="L476"> }</span>
<span class="line" id="L477"></span>
<span class="line" id="L478"> req.response.headers.deinit();</span>
<span class="line" id="L479"></span>
<span class="line" id="L480"> <span class="tok-kw">if</span> (req.response.parser.header_bytes_owned) {</span>
<span class="line" id="L481"> req.response.parser.header_bytes.deinit(req.client.allocator);</span>
<span class="line" id="L482"> }</span>
<span class="line" id="L483"></span>
<span class="line" id="L484"> <span class="tok-kw">if</span> (req.connection) |connection| {</span>
<span class="line" id="L485"> <span class="tok-kw">if</span> (!req.response.parser.done) {</span>
<span class="line" id="L486"> <span class="tok-comment">// If the response wasn't fully read, then we need to close the connection.</span>
</span>
<span class="line" id="L487"> connection.data.closing = <span class="tok-null">true</span>;</span>
<span class="line" id="L488"> }</span>
<span class="line" id="L489"> req.client.connection_pool.release(req.client, connection);</span>
<span class="line" id="L490"> }</span>
<span class="line" id="L491"></span>
<span class="line" id="L492"> req.arena.deinit();</span>
<span class="line" id="L493"> req.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L494"> }</span>
<span class="line" id="L495"></span>
<span class="line" id="L496"> <span class="tok-comment">// This function must deallocate all resources associated with the request, or keep those which will be used</span>
</span>
<span class="line" id="L497"> <span class="tok-comment">// This needs to be kept in sync with deinit and request</span>
</span>
<span class="line" id="L498"> <span class="tok-kw">fn</span> <span class="tok-fn">redirect</span>(req: *Request, uri: Uri) !<span class="tok-type">void</span> {</span>
<span class="line" id="L499"> assert(req.response.parser.done);</span>
<span class="line" id="L500"></span>
<span class="line" id="L501"> <span class="tok-kw">switch</span> (req.response.compression) {</span>
<span class="line" id="L502"> .none => {},</span>
<span class="line" id="L503"> .deflate => |*deflate| deflate.deinit(),</span>
<span class="line" id="L504"> .gzip => |*gzip| gzip.deinit(),</span>
<span class="line" id="L505"> .zstd => |*zstd| zstd.deinit(),</span>
<span class="line" id="L506"> }</span>
<span class="line" id="L507"></span>
<span class="line" id="L508"> req.client.connection_pool.release(req.client, req.connection.?);</span>
<span class="line" id="L509"> req.connection = <span class="tok-null">null</span>;</span>
<span class="line" id="L510"></span>
<span class="line" id="L511"> <span class="tok-kw">const</span> protocol = protocol_map.get(uri.scheme) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnsupportedUrlScheme;</span>
<span class="line" id="L512"></span>
<span class="line" id="L513"> <span class="tok-kw">const</span> port: <span class="tok-type">u16</span> = uri.port <span class="tok-kw">orelse</span> <span class="tok-kw">switch</span> (protocol) {</span>
<span class="line" id="L514"> .plain => <span class="tok-number">80</span>,</span>
<span class="line" id="L515"> .tls => <span class="tok-number">443</span>,</span>
<span class="line" id="L516"> };</span>
<span class="line" id="L517"></span>
<span class="line" id="L518"> <span class="tok-kw">const</span> host = uri.host <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UriMissingHost;</span>
<span class="line" id="L519"></span>
<span class="line" id="L520"> req.uri = uri;</span>
<span class="line" id="L521"> req.connection = <span class="tok-kw">try</span> req.client.connect(host, port, protocol);</span>
<span class="line" id="L522"> req.redirects_left -= <span class="tok-number">1</span>;</span>
<span class="line" id="L523"> req.response.headers.clearRetainingCapacity();</span>
<span class="line" id="L524"> req.response.parser.reset();</span>
<span class="line" id="L525"></span>
<span class="line" id="L526"> req.response = .{</span>
<span class="line" id="L527"> .status = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L528"> .reason = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L529"> .version = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L530"> .headers = req.response.headers,</span>
<span class="line" id="L531"> .parser = req.response.parser,</span>
<span class="line" id="L532"> };</span>
<span class="line" id="L533"> }</span>
<span class="line" id="L534"></span>
<span class="line" id="L535"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> StartError = Connection.WriteError || <span class="tok-kw">error</span>{ InvalidContentLength, UnsupportedTransferEncoding };</span>
<span class="line" id="L536"></span>
<span class="line" id="L537"> <span class="tok-comment">/// Send the request to the server.</span></span>
<span class="line" id="L538"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">start</span>(req: *Request) StartError!<span class="tok-type">void</span> {</span>
<span class="line" id="L539"> <span class="tok-kw">var</span> buffered = std.io.bufferedWriter(req.connection.?.data.writer());</span>
<span class="line" id="L540"> <span class="tok-kw">const</span> w = buffered.writer();</span>
<span class="line" id="L541"></span>
<span class="line" id="L542"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-builtin">@tagName</span>(req.method));</span>
<span class="line" id="L543"> <span class="tok-kw">try</span> w.writeByte(<span class="tok-str">' '</span>);</span>
<span class="line" id="L544"></span>
<span class="line" id="L545"> <span class="tok-kw">if</span> (req.method == .CONNECT) {</span>
<span class="line" id="L546"> <span class="tok-kw">try</span> w.writeAll(req.uri.host.?);</span>
<span class="line" id="L547"> <span class="tok-kw">try</span> w.writeByte(<span class="tok-str">':'</span>);</span>
<span class="line" id="L548"> <span class="tok-kw">try</span> w.print(<span class="tok-str">"{}"</span>, .{req.uri.port.?});</span>
<span class="line" id="L549"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (req.connection.?.data.proxied) {</span>
<span class="line" id="L550"> <span class="tok-comment">// proxied connections require the full uri</span>
</span>
<span class="line" id="L551"> <span class="tok-kw">try</span> w.print(<span class="tok-str">"{+/}"</span>, .{req.uri});</span>
<span class="line" id="L552"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L553"> <span class="tok-kw">try</span> w.print(<span class="tok-str">"{/}"</span>, .{req.uri});</span>
<span class="line" id="L554"> }</span>
<span class="line" id="L555"></span>
<span class="line" id="L556"> <span class="tok-kw">try</span> w.writeByte(<span class="tok-str">' '</span>);</span>
<span class="line" id="L557"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-builtin">@tagName</span>(req.version));</span>
<span class="line" id="L558"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-str">"\r\n"</span>);</span>
<span class="line" id="L559"></span>
<span class="line" id="L560"> <span class="tok-kw">if</span> (!req.headers.contains(<span class="tok-str">"host"</span>)) {</span>
<span class="line" id="L561"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-str">"Host: "</span>);</span>
<span class="line" id="L562"> <span class="tok-kw">try</span> w.writeAll(req.uri.host.?);</span>
<span class="line" id="L563"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-str">"\r\n"</span>);</span>
<span class="line" id="L564"> }</span>
<span class="line" id="L565"></span>
<span class="line" id="L566"> <span class="tok-kw">if</span> (!req.headers.contains(<span class="tok-str">"user-agent"</span>)) {</span>
<span class="line" id="L567"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-str">"User-Agent: zig/"</span>);</span>
<span class="line" id="L568"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>).zig_version_string);</span>
<span class="line" id="L569"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-str">" (std.http)\r\n"</span>);</span>
<span class="line" id="L570"> }</span>
<span class="line" id="L571"></span>
<span class="line" id="L572"> <span class="tok-kw">if</span> (!req.headers.contains(<span class="tok-str">"connection"</span>)) {</span>
<span class="line" id="L573"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-str">"Connection: keep-alive\r\n"</span>);</span>
<span class="line" id="L574"> }</span>
<span class="line" id="L575"></span>
<span class="line" id="L576"> <span class="tok-kw">if</span> (!req.headers.contains(<span class="tok-str">"accept-encoding"</span>)) {</span>
<span class="line" id="L577"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-str">"Accept-Encoding: gzip, deflate, zstd\r\n"</span>);</span>
<span class="line" id="L578"> }</span>
<span class="line" id="L579"></span>
<span class="line" id="L580"> <span class="tok-kw">if</span> (!req.headers.contains(<span class="tok-str">"te"</span>)) {</span>
<span class="line" id="L581"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-str">"TE: gzip, deflate, trailers\r\n"</span>);</span>
<span class="line" id="L582"> }</span>
<span class="line" id="L583"></span>
<span class="line" id="L584"> <span class="tok-kw">const</span> has_transfer_encoding = req.headers.contains(<span class="tok-str">"transfer-encoding"</span>);</span>
<span class="line" id="L585"> <span class="tok-kw">const</span> has_content_length = req.headers.contains(<span class="tok-str">"content-length"</span>);</span>
<span class="line" id="L586"></span>
<span class="line" id="L587"> <span class="tok-kw">if</span> (!has_transfer_encoding <span class="tok-kw">and</span> !has_content_length) {</span>
<span class="line" id="L588"> <span class="tok-kw">switch</span> (req.transfer_encoding) {</span>
<span class="line" id="L589"> .chunked => <span class="tok-kw">try</span> w.writeAll(<span class="tok-str">"Transfer-Encoding: chunked\r\n"</span>),</span>
<span class="line" id="L590"> .content_length => |content_length| <span class="tok-kw">try</span> w.print(<span class="tok-str">"Content-Length: {d}\r\n"</span>, .{content_length}),</span>
<span class="line" id="L591"> .none => {},</span>
<span class="line" id="L592"> }</span>
<span class="line" id="L593"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L594"> <span class="tok-kw">if</span> (has_content_length) {</span>
<span class="line" id="L595"> <span class="tok-kw">const</span> content_length = std.fmt.parseInt(<span class="tok-type">u64</span>, req.headers.getFirstValue(<span class="tok-str">"content-length"</span>).?, <span class="tok-number">10</span>) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidContentLength;</span>
<span class="line" id="L596"></span>
<span class="line" id="L597"> req.transfer_encoding = .{ .content_length = content_length };</span>
<span class="line" id="L598"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (has_transfer_encoding) {</span>
<span class="line" id="L599"> <span class="tok-kw">const</span> transfer_encoding = req.headers.getFirstValue(<span class="tok-str">"transfer-encoding"</span>).?;</span>
<span class="line" id="L600"> <span class="tok-kw">if</span> (std.mem.eql(<span class="tok-type">u8</span>, transfer_encoding, <span class="tok-str">"chunked"</span>)) {</span>
<span class="line" id="L601"> req.transfer_encoding = .chunked;</span>
<span class="line" id="L602"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L603"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnsupportedTransferEncoding;</span>
<span class="line" id="L604"> }</span>
<span class="line" id="L605"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L606"> req.transfer_encoding = .none;</span>
<span class="line" id="L607"> }</span>
<span class="line" id="L608"> }</span>
<span class="line" id="L609"></span>
<span class="line" id="L610"> <span class="tok-kw">try</span> w.print(<span class="tok-str">"{}"</span>, .{req.headers});</span>
<span class="line" id="L611"></span>
<span class="line" id="L612"> <span class="tok-kw">try</span> w.writeAll(<span class="tok-str">"\r\n"</span>);</span>
<span class="line" id="L613"></span>
<span class="line" id="L614"> <span class="tok-kw">try</span> buffered.flush();</span>
<span class="line" id="L615"> }</span>
<span class="line" id="L616"></span>
<span class="line" id="L617"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> TransferReadError = Connection.ReadError || proto.HeadersParser.ReadError;</span>
<span class="line" id="L618"></span>
<span class="line" id="L619"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> TransferReader = std.io.Reader(*Request, TransferReadError, transferRead);</span>
<span class="line" id="L620"></span>
<span class="line" id="L621"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">transferReader</span>(req: *Request) TransferReader {</span>
<span class="line" id="L622"> <span class="tok-kw">return</span> .{ .context = req };</span>
<span class="line" id="L623"> }</span>
<span class="line" id="L624"></span>
<span class="line" id="L625"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">transferRead</span>(req: *Request, buf: []<span class="tok-type">u8</span>) TransferReadError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L626"> <span class="tok-kw">if</span> (req.response.parser.done) <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L627"></span>
<span class="line" id="L628"> <span class="tok-kw">var</span> index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L629"> <span class="tok-kw">while</span> (index == <span class="tok-number">0</span>) {</span>
<span class="line" id="L630"> <span class="tok-kw">const</span> amt = <span class="tok-kw">try</span> req.response.parser.read(&req.connection.?.data, buf[index..], req.response.skip);</span>
<span class="line" id="L631"> <span class="tok-kw">if</span> (amt == <span class="tok-number">0</span> <span class="tok-kw">and</span> req.response.parser.done) <span class="tok-kw">break</span>;</span>
<span class="line" id="L632"> index += amt;</span>
<span class="line" id="L633"> }</span>
<span class="line" id="L634"></span>
<span class="line" id="L635"> <span class="tok-kw">return</span> index;</span>
<span class="line" id="L636"> }</span>
<span class="line" id="L637"></span>
<span class="line" id="L638"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> WaitError = RequestError || StartError || TransferReadError || proto.HeadersParser.CheckCompleteHeadError || Response.ParseError || Uri.ParseError || <span class="tok-kw">error</span>{ TooManyHttpRedirects, CannotRedirect, HttpRedirectMissingLocation, CompressionInitializationFailed, CompressionNotSupported };</span>
<span class="line" id="L639"></span>
<span class="line" id="L640"> <span class="tok-comment">/// Waits for a response from the server and parses any headers that are sent.</span></span>
<span class="line" id="L641"> <span class="tok-comment">/// This function will block until the final response is received.</span></span>
<span class="line" id="L642"> <span class="tok-comment">///</span></span>
<span class="line" id="L643"> <span class="tok-comment">/// If `handle_redirects` is true and the request has no payload, then this function will automatically follow</span></span>
<span class="line" id="L644"> <span class="tok-comment">/// redirects. If a request payload is present, then this function will error with error.CannotRedirect.</span></span>
<span class="line" id="L645"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(req: *Request) WaitError!<span class="tok-type">void</span> {</span>
<span class="line" id="L646"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) { <span class="tok-comment">// handle redirects</span>
</span>
<span class="line" id="L647"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) { <span class="tok-comment">// read headers</span>
</span>
<span class="line" id="L648"> <span class="tok-kw">try</span> req.connection.?.data.fill();</span>
<span class="line" id="L649"></span>
<span class="line" id="L650"> <span class="tok-kw">const</span> nchecked = <span class="tok-kw">try</span> req.response.parser.checkCompleteHead(req.client.allocator, req.connection.?.data.peek());</span>
<span class="line" id="L651"> req.connection.?.data.drop(<span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(nchecked)));</span>
<span class="line" id="L652"></span>
<span class="line" id="L653"> <span class="tok-kw">if</span> (req.response.parser.state.isContent()) <span class="tok-kw">break</span>;</span>
<span class="line" id="L654"> }</span>
<span class="line" id="L655"></span>
<span class="line" id="L656"> <span class="tok-kw">try</span> req.response.parse(req.response.parser.header_bytes.items, <span class="tok-null">false</span>);</span>
<span class="line" id="L657"></span>
<span class="line" id="L658"> <span class="tok-kw">if</span> (req.response.status == .switching_protocols) {</span>
<span class="line" id="L659"> req.connection.?.data.closing = <span class="tok-null">false</span>;</span>
<span class="line" id="L660"> req.response.parser.done = <span class="tok-null">true</span>;</span>
<span class="line" id="L661"> }</span>
<span class="line" id="L662"></span>
<span class="line" id="L663"> <span class="tok-kw">if</span> (req.method == .CONNECT <span class="tok-kw">and</span> req.response.status == .ok) {</span>
<span class="line" id="L664"> req.connection.?.data.closing = <span class="tok-null">false</span>;</span>
<span class="line" id="L665"> req.response.parser.done = <span class="tok-null">true</span>;</span>
<span class="line" id="L666"> }</span>
<span class="line" id="L667"></span>
<span class="line" id="L668"> <span class="tok-comment">// we default to using keep-alive if not provided</span>
</span>
<span class="line" id="L669"> <span class="tok-kw">const</span> req_connection = req.headers.getFirstValue(<span class="tok-str">"connection"</span>);</span>
<span class="line" id="L670"> <span class="tok-kw">const</span> req_keepalive = req_connection != <span class="tok-null">null</span> <span class="tok-kw">and</span> !std.ascii.eqlIgnoreCase(<span class="tok-str">"close"</span>, req_connection.?);</span>
<span class="line" id="L671"></span>
<span class="line" id="L672"> <span class="tok-kw">const</span> res_connection = req.response.headers.getFirstValue(<span class="tok-str">"connection"</span>);</span>
<span class="line" id="L673"> <span class="tok-kw">const</span> res_keepalive = res_connection != <span class="tok-null">null</span> <span class="tok-kw">and</span> !std.ascii.eqlIgnoreCase(<span class="tok-str">"close"</span>, res_connection.?);</span>
<span class="line" id="L674"> <span class="tok-kw">if</span> (res_keepalive <span class="tok-kw">and</span> (req_keepalive <span class="tok-kw">or</span> req_connection == <span class="tok-null">null</span>)) {</span>
<span class="line" id="L675"> req.connection.?.data.closing = <span class="tok-null">false</span>;</span>
<span class="line" id="L676"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L677"> req.connection.?.data.closing = <span class="tok-null">true</span>;</span>
<span class="line" id="L678"> }</span>
<span class="line" id="L679"></span>
<span class="line" id="L680"> <span class="tok-kw">if</span> (req.response.transfer_encoding) |te| {</span>
<span class="line" id="L681"> <span class="tok-kw">switch</span> (te) {</span>
<span class="line" id="L682"> .chunked => {</span>
<span class="line" id="L683"> req.response.parser.next_chunk_length = <span class="tok-number">0</span>;</span>
<span class="line" id="L684"> req.response.parser.state = .chunk_head_size;</span>
<span class="line" id="L685"> },</span>
<span class="line" id="L686"> }</span>
<span class="line" id="L687"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (req.response.content_length) |cl| {</span>
<span class="line" id="L688"> req.response.parser.next_chunk_length = cl;</span>
<span class="line" id="L689"></span>
<span class="line" id="L690"> <span class="tok-kw">if</span> (cl == <span class="tok-number">0</span>) req.response.parser.done = <span class="tok-null">true</span>;</span>
<span class="line" id="L691"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L692"> req.response.parser.done = <span class="tok-null">true</span>;</span>
<span class="line" id="L693"> }</span>
<span class="line" id="L694"></span>
<span class="line" id="L695"> <span class="tok-comment">// HEAD requests have no body</span>
</span>
<span class="line" id="L696"> <span class="tok-kw">if</span> (req.method == .HEAD) {</span>
<span class="line" id="L697"> req.response.parser.done = <span class="tok-null">true</span>;</span>
<span class="line" id="L698"> }</span>
<span class="line" id="L699"></span>
<span class="line" id="L700"> <span class="tok-kw">if</span> (req.transfer_encoding == .none <span class="tok-kw">and</span> req.response.status.class() == .redirect <span class="tok-kw">and</span> req.handle_redirects) {</span>
<span class="line" id="L701"> req.response.skip = <span class="tok-null">true</span>;</span>
<span class="line" id="L702"></span>
<span class="line" id="L703"> <span class="tok-kw">const</span> empty = <span class="tok-builtin">@as</span>([*]<span class="tok-type">u8</span>, <span class="tok-null">undefined</span>)[<span class="tok-number">0</span>..<span class="tok-number">0</span>];</span>
<span class="line" id="L704"> assert(<span class="tok-kw">try</span> req.transferRead(empty) == <span class="tok-number">0</span>); <span class="tok-comment">// we're skipping, no buffer is necessary</span>
</span>
<span class="line" id="L705"></span>
<span class="line" id="L706"> <span class="tok-kw">if</span> (req.redirects_left == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.TooManyHttpRedirects;</span>
<span class="line" id="L707"></span>
<span class="line" id="L708"> <span class="tok-kw">const</span> location = req.response.headers.getFirstValue(<span class="tok-str">"location"</span>) <span class="tok-kw">orelse</span></span>
<span class="line" id="L709"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpRedirectMissingLocation;</span>
<span class="line" id="L710"></span>
<span class="line" id="L711"> <span class="tok-kw">const</span> arena = req.arena.allocator();</span>
<span class="line" id="L712"></span>
<span class="line" id="L713"> <span class="tok-kw">const</span> location_duped = <span class="tok-kw">try</span> arena.dupe(<span class="tok-type">u8</span>, location);</span>
<span class="line" id="L714"></span>
<span class="line" id="L715"> <span class="tok-kw">const</span> new_url = Uri.parse(location_duped) <span class="tok-kw">catch</span> <span class="tok-kw">try</span> Uri.parseWithoutScheme(location_duped);</span>
<span class="line" id="L716"> <span class="tok-kw">const</span> resolved_url = <span class="tok-kw">try</span> req.uri.resolve(new_url, <span class="tok-null">false</span>, arena);</span>
<span class="line" id="L717"></span>
<span class="line" id="L718"> <span class="tok-kw">try</span> req.redirect(resolved_url);</span>
<span class="line" id="L719"></span>
<span class="line" id="L720"> <span class="tok-kw">try</span> req.start();</span>
<span class="line" id="L721"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L722"> req.response.skip = <span class="tok-null">false</span>;</span>
<span class="line" id="L723"> <span class="tok-kw">if</span> (!req.response.parser.done) {</span>
<span class="line" id="L724"> <span class="tok-kw">if</span> (req.response.transfer_compression) |tc| <span class="tok-kw">switch</span> (tc) {</span>
<span class="line" id="L725"> .compress => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CompressionNotSupported,</span>
<span class="line" id="L726"> .deflate => req.response.compression = .{</span>
<span class="line" id="L727"> .deflate = std.compress.zlib.decompressStream(req.client.allocator, req.transferReader()) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CompressionInitializationFailed,</span>
<span class="line" id="L728"> },</span>
<span class="line" id="L729"> .gzip => req.response.compression = .{</span>
<span class="line" id="L730"> .gzip = std.compress.gzip.decompress(req.client.allocator, req.transferReader()) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CompressionInitializationFailed,</span>
<span class="line" id="L731"> },</span>
<span class="line" id="L732"> .zstd => req.response.compression = .{</span>
<span class="line" id="L733"> .zstd = std.compress.zstd.decompressStream(req.client.allocator, req.transferReader()),</span>
<span class="line" id="L734"> },</span>
<span class="line" id="L735"> };</span>
<span class="line" id="L736"> }</span>
<span class="line" id="L737"></span>
<span class="line" id="L738"> <span class="tok-kw">if</span> (req.response.status.class() == .redirect <span class="tok-kw">and</span> req.handle_redirects <span class="tok-kw">and</span> req.transfer_encoding != .none)</span>
<span class="line" id="L739"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CannotRedirect; <span class="tok-comment">// The request body has already been sent. The request is still in a valid state, but the redirect must be handled manually.</span>
</span>
<span class="line" id="L740"></span>
<span class="line" id="L741"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L742"> }</span>
<span class="line" id="L743"> }</span>
<span class="line" id="L744"> }</span>
<span class="line" id="L745"></span>
<span class="line" id="L746"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ReadError = TransferReadError || proto.HeadersParser.CheckCompleteHeadError || <span class="tok-kw">error</span>{ DecompressionFailure, InvalidTrailers };</span>
<span class="line" id="L747"></span>
<span class="line" id="L748"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Reader = std.io.Reader(*Request, ReadError, read);</span>
<span class="line" id="L749"></span>
<span class="line" id="L750"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reader</span>(req: *Request) Reader {</span>
<span class="line" id="L751"> <span class="tok-kw">return</span> .{ .context = req };</span>
<span class="line" id="L752"> }</span>
<span class="line" id="L753"></span>
<span class="line" id="L754"> <span class="tok-comment">/// Reads data from the response body. Must be called after `do`.</span></span>
<span class="line" id="L755"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">read</span>(req: *Request, buffer: []<span class="tok-type">u8</span>) ReadError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L756"> <span class="tok-kw">const</span> out_index = <span class="tok-kw">switch</span> (req.response.compression) {</span>
<span class="line" id="L757"> .deflate => |*deflate| deflate.read(buffer) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.DecompressionFailure,</span>
<span class="line" id="L758"> .gzip => |*gzip| gzip.read(buffer) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.DecompressionFailure,</span>
<span class="line" id="L759"> .zstd => |*zstd| zstd.read(buffer) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.DecompressionFailure,</span>
<span class="line" id="L760"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> req.transferRead(buffer),</span>
<span class="line" id="L761"> };</span>
<span class="line" id="L762"></span>
<span class="line" id="L763"> <span class="tok-kw">if</span> (out_index == <span class="tok-number">0</span>) {</span>
<span class="line" id="L764"> <span class="tok-kw">const</span> has_trail = !req.response.parser.state.isContent();</span>
<span class="line" id="L765"></span>
<span class="line" id="L766"> <span class="tok-kw">while</span> (!req.response.parser.state.isContent()) { <span class="tok-comment">// read trailing headers</span>
</span>
<span class="line" id="L767"> <span class="tok-kw">try</span> req.connection.?.data.fill();</span>
<span class="line" id="L768"></span>
<span class="line" id="L769"> <span class="tok-kw">const</span> nchecked = <span class="tok-kw">try</span> req.response.parser.checkCompleteHead(req.client.allocator, req.connection.?.data.peek());</span>
<span class="line" id="L770"> req.connection.?.data.drop(<span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(nchecked)));</span>
<span class="line" id="L771"> }</span>
<span class="line" id="L772"></span>
<span class="line" id="L773"> <span class="tok-kw">if</span> (has_trail) {</span>
<span class="line" id="L774"> req.response.headers.clearRetainingCapacity();</span>
<span class="line" id="L775"></span>
<span class="line" id="L776"> <span class="tok-comment">// The response headers before the trailers are already guaranteed to be valid, so they will always be parsed again and cannot return an error.</span>
</span>
<span class="line" id="L777"> <span class="tok-comment">// This will *only* fail for a malformed trailer.</span>
</span>
<span class="line" id="L778"> req.response.parse(req.response.parser.header_bytes.items, <span class="tok-null">true</span>) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidTrailers;</span>
<span class="line" id="L779"> }</span>
<span class="line" id="L780"> }</span>
<span class="line" id="L781"></span>
<span class="line" id="L782"> <span class="tok-kw">return</span> out_index;</span>
<span class="line" id="L783"> }</span>
<span class="line" id="L784"></span>
<span class="line" id="L785"> <span class="tok-comment">/// Reads data from the response body. Must be called after `do`.</span></span>
<span class="line" id="L786"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">readAll</span>(req: *Request, buffer: []<span class="tok-type">u8</span>) !<span class="tok-type">usize</span> {</span>
<span class="line" id="L787"> <span class="tok-kw">var</span> index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L788"> <span class="tok-kw">while</span> (index < buffer.len) {</span>
<span class="line" id="L789"> <span class="tok-kw">const</span> amt = <span class="tok-kw">try</span> read(req, buffer[index..]);</span>
<span class="line" id="L790"> <span class="tok-kw">if</span> (amt == <span class="tok-number">0</span>) <span class="tok-kw">break</span>;</span>
<span class="line" id="L791"> index += amt;</span>
<span class="line" id="L792"> }</span>
<span class="line" id="L793"> <span class="tok-kw">return</span> index;</span>
<span class="line" id="L794"> }</span>
<span class="line" id="L795"></span>
<span class="line" id="L796"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> WriteError = Connection.WriteError || <span class="tok-kw">error</span>{ NotWriteable, MessageTooLong };</span>
<span class="line" id="L797"></span>
<span class="line" id="L798"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Writer = std.io.Writer(*Request, WriteError, write);</span>
<span class="line" id="L799"></span>
<span class="line" id="L800"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">writer</span>(req: *Request) Writer {</span>
<span class="line" id="L801"> <span class="tok-kw">return</span> .{ .context = req };</span>
<span class="line" id="L802"> }</span>
<span class="line" id="L803"></span>
<span class="line" id="L804"> <span class="tok-comment">/// Write `bytes` to the server. The `transfer_encoding` request header determines how data will be sent.</span></span>
<span class="line" id="L805"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">write</span>(req: *Request, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) WriteError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L806"> <span class="tok-kw">switch</span> (req.transfer_encoding) {</span>
<span class="line" id="L807"> .chunked => {</span>
<span class="line" id="L808"> <span class="tok-kw">try</span> req.connection.?.data.writer().print(<span class="tok-str">"{x}\r\n"</span>, .{bytes.len});</span>
<span class="line" id="L809"> <span class="tok-kw">try</span> req.connection.?.data.writeAll(bytes);</span>
<span class="line" id="L810"> <span class="tok-kw">try</span> req.connection.?.data.writeAll(<span class="tok-str">"\r\n"</span>);</span>
<span class="line" id="L811"></span>
<span class="line" id="L812"> <span class="tok-kw">return</span> bytes.len;</span>
<span class="line" id="L813"> },</span>
<span class="line" id="L814"> .content_length => |*len| {</span>
<span class="line" id="L815"> <span class="tok-kw">if</span> (len.* < bytes.len) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MessageTooLong;</span>
<span class="line" id="L816"></span>
<span class="line" id="L817"> <span class="tok-kw">const</span> amt = <span class="tok-kw">try</span> req.connection.?.data.write(bytes);</span>
<span class="line" id="L818"> len.* -= amt;</span>
<span class="line" id="L819"> <span class="tok-kw">return</span> amt;</span>
<span class="line" id="L820"> },</span>
<span class="line" id="L821"> .none => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.NotWriteable,</span>
<span class="line" id="L822"> }</span>
<span class="line" id="L823"> }</span>
<span class="line" id="L824"></span>
<span class="line" id="L825"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">writeAll</span>(req: *Request, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) WriteError!<span class="tok-type">void</span> {</span>
<span class="line" id="L826"> <span class="tok-kw">var</span> index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L827"> <span class="tok-kw">while</span> (index < bytes.len) {</span>
<span class="line" id="L828"> index += <span class="tok-kw">try</span> write(req, bytes[index..]);</span>
<span class="line" id="L829"> }</span>
<span class="line" id="L830"> }</span>
<span class="line" id="L831"></span>
<span class="line" id="L832"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> FinishError = WriteError || <span class="tok-kw">error</span>{MessageNotCompleted};</span>
<span class="line" id="L833"></span>
<span class="line" id="L834"> <span class="tok-comment">/// Finish the body of a request. This notifies the server that you have no more data to send.</span></span>
<span class="line" id="L835"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">finish</span>(req: *Request) FinishError!<span class="tok-type">void</span> {</span>
<span class="line" id="L836"> <span class="tok-kw">switch</span> (req.transfer_encoding) {</span>
<span class="line" id="L837"> .chunked => <span class="tok-kw">try</span> req.connection.?.data.writeAll(<span class="tok-str">"0\r\n\r\n"</span>),</span>
<span class="line" id="L838"> .content_length => |len| <span class="tok-kw">if</span> (len != <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MessageNotCompleted,</span>
<span class="line" id="L839"> .none => {},</span>
<span class="line" id="L840"> }</span>
<span class="line" id="L841"> }</span>
<span class="line" id="L842">};</span>
<span class="line" id="L843"></span>
<span class="line" id="L844"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> HttpProxy = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L845"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ProxyAuthentication = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L846"> basic: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L847"> custom: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L848"> };</span>
<span class="line" id="L849"></span>
<span class="line" id="L850"> protocol: Connection.Protocol,</span>
<span class="line" id="L851"> host: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L852"> port: ?<span class="tok-type">u16</span> = <span class="tok-null">null</span>,</span>
<span class="line" id="L853"></span>
<span class="line" id="L854"> <span class="tok-comment">/// The value for the Proxy-Authorization header.</span></span>
<span class="line" id="L855"> auth: ?ProxyAuthentication = <span class="tok-null">null</span>,</span>
<span class="line" id="L856">};</span>
<span class="line" id="L857"></span>
<span class="line" id="L858"><span class="tok-comment">/// Release all associated resources with the client.</span></span>
<span class="line" id="L859"><span class="tok-comment">/// TODO: currently leaks all request allocated data</span></span>
<span class="line" id="L860"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(client: *Client) <span class="tok-type">void</span> {</span>
<span class="line" id="L861"> client.connection_pool.deinit(client);</span>
<span class="line" id="L862"></span>
<span class="line" id="L863"> client.ca_bundle.deinit(client.allocator);</span>
<span class="line" id="L864"> client.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L865">}</span>
<span class="line" id="L866"></span>
<span class="line" id="L867"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ConnectUnproxiedError = Allocator.Error || <span class="tok-kw">error</span>{ ConnectionRefused, NetworkUnreachable, ConnectionTimedOut, ConnectionResetByPeer, TemporaryNameServerFailure, NameServerFailure, UnknownHostName, HostLacksNetworkAddresses, UnexpectedConnectFailure, TlsInitializationFailed };</span>
<span class="line" id="L868"></span>
<span class="line" id="L869"><span class="tok-comment">/// Connect to `host:port` using the specified protocol. This will reuse a connection if one is already open.</span></span>
<span class="line" id="L870"><span class="tok-comment">/// This function is threadsafe.</span></span>
<span class="line" id="L871"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">connectUnproxied</span>(client: *Client, host: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, port: <span class="tok-type">u16</span>, protocol: Connection.Protocol) ConnectUnproxiedError!*ConnectionPool.Node {</span>
<span class="line" id="L872"> <span class="tok-kw">if</span> (client.connection_pool.findConnection(.{</span>
<span class="line" id="L873"> .host = host,</span>
<span class="line" id="L874"> .port = port,</span>
<span class="line" id="L875"> .is_tls = protocol == .tls,</span>
<span class="line" id="L876"> })) |node|</span>
<span class="line" id="L877"> <span class="tok-kw">return</span> node;</span>
<span class="line" id="L878"></span>
<span class="line" id="L879"> <span class="tok-kw">const</span> conn = <span class="tok-kw">try</span> client.allocator.create(ConnectionPool.Node);</span>
<span class="line" id="L880"> <span class="tok-kw">errdefer</span> client.allocator.destroy(conn);</span>
<span class="line" id="L881"> conn.* = .{ .data = <span class="tok-null">undefined</span> };</span>
<span class="line" id="L882"></span>
<span class="line" id="L883"> <span class="tok-kw">const</span> stream = net.tcpConnectToHost(client.allocator, host, port) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L884"> <span class="tok-kw">error</span>.ConnectionRefused => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ConnectionRefused,</span>
<span class="line" id="L885"> <span class="tok-kw">error</span>.NetworkUnreachable => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.NetworkUnreachable,</span>
<span class="line" id="L886"> <span class="tok-kw">error</span>.ConnectionTimedOut => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ConnectionTimedOut,</span>
<span class="line" id="L887"> <span class="tok-kw">error</span>.ConnectionResetByPeer => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ConnectionResetByPeer,</span>
<span class="line" id="L888"> <span class="tok-kw">error</span>.TemporaryNameServerFailure => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.TemporaryNameServerFailure,</span>
<span class="line" id="L889"> <span class="tok-kw">error</span>.NameServerFailure => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.NameServerFailure,</span>
<span class="line" id="L890"> <span class="tok-kw">error</span>.UnknownHostName => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnknownHostName,</span>
<span class="line" id="L891"> <span class="tok-kw">error</span>.HostLacksNetworkAddresses => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HostLacksNetworkAddresses,</span>
<span class="line" id="L892"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnexpectedConnectFailure,</span>
<span class="line" id="L893"> };</span>
<span class="line" id="L894"> <span class="tok-kw">errdefer</span> stream.close();</span>
<span class="line" id="L895"></span>
<span class="line" id="L896"> conn.data = .{</span>
<span class="line" id="L897"> .stream = stream,</span>
<span class="line" id="L898"> .tls_client = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L899"> .protocol = protocol,</span>
<span class="line" id="L900"></span>
<span class="line" id="L901"> .host = <span class="tok-kw">try</span> client.allocator.dupe(<span class="tok-type">u8</span>, host),</span>
<span class="line" id="L902"> .port = port,</span>
<span class="line" id="L903"> };</span>
<span class="line" id="L904"> <span class="tok-kw">errdefer</span> client.allocator.free(conn.data.host);</span>
<span class="line" id="L905"></span>
<span class="line" id="L906"> <span class="tok-kw">switch</span> (protocol) {</span>
<span class="line" id="L907"> .plain => {},</span>
<span class="line" id="L908"> .tls => {</span>
<span class="line" id="L909"> conn.data.tls_client = <span class="tok-kw">try</span> client.allocator.create(std.crypto.tls.Client);</span>
<span class="line" id="L910"> <span class="tok-kw">errdefer</span> client.allocator.destroy(conn.data.tls_client);</span>
<span class="line" id="L911"></span>
<span class="line" id="L912"> conn.data.tls_client.* = std.crypto.tls.Client.init(stream, client.ca_bundle, host) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.TlsInitializationFailed;</span>
<span class="line" id="L913"> <span class="tok-comment">// This is appropriate for HTTPS because the HTTP headers contain</span>
</span>
<span class="line" id="L914"> <span class="tok-comment">// the content length which is used to detect truncation attacks.</span>
</span>
<span class="line" id="L915"> conn.data.tls_client.allow_truncation_attacks = <span class="tok-null">true</span>;</span>
<span class="line" id="L916"> },</span>
<span class="line" id="L917"> }</span>
<span class="line" id="L918"></span>
<span class="line" id="L919"> client.connection_pool.addUsed(conn);</span>
<span class="line" id="L920"></span>
<span class="line" id="L921"> <span class="tok-kw">return</span> conn;</span>
<span class="line" id="L922">}</span>
<span class="line" id="L923"></span>
<span class="line" id="L924"><span class="tok-comment">// Prevents a dependency loop in request()</span>
</span>
<span class="line" id="L925"><span class="tok-kw">const</span> ConnectErrorPartial = ConnectUnproxiedError || <span class="tok-kw">error</span>{ UnsupportedUrlScheme, ConnectionRefused };</span>
<span class="line" id="L926"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ConnectError = ConnectErrorPartial || RequestError;</span>
<span class="line" id="L927"></span>
<span class="line" id="L928"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">connect</span>(client: *Client, host: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, port: <span class="tok-type">u16</span>, protocol: Connection.Protocol) ConnectError!*ConnectionPool.Node {</span>
<span class="line" id="L929"> <span class="tok-kw">if</span> (client.connection_pool.findConnection(.{</span>
<span class="line" id="L930"> .host = host,</span>
<span class="line" id="L931"> .port = port,</span>
<span class="line" id="L932"> .is_tls = protocol == .tls,</span>
<span class="line" id="L933"> })) |node|</span>
<span class="line" id="L934"> <span class="tok-kw">return</span> node;</span>
<span class="line" id="L935"></span>
<span class="line" id="L936"> <span class="tok-kw">if</span> (client.proxy) |proxy| {</span>
<span class="line" id="L937"> <span class="tok-kw">const</span> proxy_port: <span class="tok-type">u16</span> = proxy.port <span class="tok-kw">orelse</span> <span class="tok-kw">switch</span> (proxy.protocol) {</span>
<span class="line" id="L938"> .plain => <span class="tok-number">80</span>,</span>
<span class="line" id="L939"> .tls => <span class="tok-number">443</span>,</span>
<span class="line" id="L940"> };</span>
<span class="line" id="L941"></span>
<span class="line" id="L942"> <span class="tok-kw">const</span> conn = <span class="tok-kw">try</span> client.connectUnproxied(proxy.host, proxy_port, proxy.protocol);</span>
<span class="line" id="L943"> conn.data.proxied = <span class="tok-null">true</span>;</span>
<span class="line" id="L944"></span>
<span class="line" id="L945"> <span class="tok-kw">return</span> conn;</span>
<span class="line" id="L946"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L947"> <span class="tok-kw">return</span> client.connectUnproxied(host, port, protocol);</span>
<span class="line" id="L948"> }</span>
<span class="line" id="L949">}</span>
<span class="line" id="L950"></span>
<span class="line" id="L951"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> RequestError = ConnectUnproxiedError || ConnectErrorPartial || Request.StartError || std.fmt.ParseIntError || Connection.WriteError || <span class="tok-kw">error</span>{</span>
<span class="line" id="L952"> UnsupportedUrlScheme,</span>
<span class="line" id="L953"> UriMissingHost,</span>
<span class="line" id="L954"></span>
<span class="line" id="L955"> CertificateBundleLoadFailure,</span>
<span class="line" id="L956"> UnsupportedTransferEncoding,</span>
<span class="line" id="L957">};</span>
<span class="line" id="L958"></span>
<span class="line" id="L959"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Options = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L960"> version: http.Version = .@"HTTP/1.1",</span>
<span class="line" id="L961"></span>
<span class="line" id="L962"> handle_redirects: <span class="tok-type">bool</span> = <span class="tok-null">true</span>,</span>
<span class="line" id="L963"> max_redirects: <span class="tok-type">u32</span> = <span class="tok-number">3</span>,</span>
<span class="line" id="L964"> header_strategy: HeaderStrategy = .{ .dynamic = <span class="tok-number">16</span> * <span class="tok-number">1024</span> },</span>
<span class="line" id="L965"></span>
<span class="line" id="L966"> <span class="tok-comment">/// Must be an already acquired connection.</span></span>
<span class="line" id="L967"> connection: ?*ConnectionPool.Node = <span class="tok-null">null</span>,</span>
<span class="line" id="L968"></span>
<span class="line" id="L969"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> HeaderStrategy = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L970"> <span class="tok-comment">/// In this case, the client's Allocator will be used to store the</span></span>
<span class="line" id="L971"> <span class="tok-comment">/// entire HTTP header. This value is the maximum total size of</span></span>
<span class="line" id="L972"> <span class="tok-comment">/// HTTP headers allowed, otherwise</span></span>
<span class="line" id="L973"> <span class="tok-comment">/// error.HttpHeadersExceededSizeLimit is returned from read().</span></span>
<span class="line" id="L974"> dynamic: <span class="tok-type">usize</span>,</span>
<span class="line" id="L975"> <span class="tok-comment">/// This is used to store the entire HTTP header. If the HTTP</span></span>
<span class="line" id="L976"> <span class="tok-comment">/// header is too big to fit, `error.HttpHeadersExceededSizeLimit`</span></span>
<span class="line" id="L977"> <span class="tok-comment">/// is returned from read(). When this is used, `error.OutOfMemory`</span></span>
<span class="line" id="L978"> <span class="tok-comment">/// cannot be returned from `read()`.</span></span>
<span class="line" id="L979"> static: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L980"> };</span>
<span class="line" id="L981">};</span>
<span class="line" id="L982"></span>
<span class="line" id="L983"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> protocol_map = std.ComptimeStringMap(Connection.Protocol, .{</span>
<span class="line" id="L984"> .{ <span class="tok-str">"http"</span>, .plain },</span>
<span class="line" id="L985"> .{ <span class="tok-str">"ws"</span>, .plain },</span>
<span class="line" id="L986"> .{ <span class="tok-str">"https"</span>, .tls },</span>
<span class="line" id="L987"> .{ <span class="tok-str">"wss"</span>, .tls },</span>
<span class="line" id="L988">});</span>
<span class="line" id="L989"></span>
<span class="line" id="L990"><span class="tok-comment">/// Form and send a http request to a server.</span></span>
<span class="line" id="L991"><span class="tok-comment">/// This function is threadsafe.</span></span>
<span class="line" id="L992"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">request</span>(client: *Client, method: http.Method, uri: Uri, headers: http.Headers, options: Options) RequestError!Request {</span>
<span class="line" id="L993"> <span class="tok-kw">const</span> protocol = protocol_map.get(uri.scheme) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnsupportedUrlScheme;</span>
<span class="line" id="L994"></span>
<span class="line" id="L995"> <span class="tok-kw">const</span> port: <span class="tok-type">u16</span> = uri.port <span class="tok-kw">orelse</span> <span class="tok-kw">switch</span> (protocol) {</span>
<span class="line" id="L996"> .plain => <span class="tok-number">80</span>,</span>
<span class="line" id="L997"> .tls => <span class="tok-number">443</span>,</span>
<span class="line" id="L998"> };</span>
<span class="line" id="L999"></span>
<span class="line" id="L1000"> <span class="tok-kw">const</span> host = uri.host <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UriMissingHost;</span>
<span class="line" id="L1001"></span>
<span class="line" id="L1002"> <span class="tok-kw">if</span> (protocol == .tls <span class="tok-kw">and</span> <span class="tok-builtin">@atomicLoad</span>(<span class="tok-type">bool</span>, &client.next_https_rescan_certs, .Acquire)) {</span>
<span class="line" id="L1003"> client.ca_bundle_mutex.lock();</span>
<span class="line" id="L1004"> <span class="tok-kw">defer</span> client.ca_bundle_mutex.unlock();</span>
<span class="line" id="L1005"></span>
<span class="line" id="L1006"> <span class="tok-kw">if</span> (client.next_https_rescan_certs) {</span>
<span class="line" id="L1007"> client.ca_bundle.rescan(client.allocator) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CertificateBundleLoadFailure;</span>
<span class="line" id="L1008"> <span class="tok-builtin">@atomicStore</span>(<span class="tok-type">bool</span>, &client.next_https_rescan_certs, <span class="tok-null">false</span>, .Release);</span>
<span class="line" id="L1009"> }</span>
<span class="line" id="L1010"> }</span>
<span class="line" id="L1011"></span>
<span class="line" id="L1012"> <span class="tok-kw">const</span> conn = options.connection <span class="tok-kw">orelse</span> <span class="tok-kw">try</span> client.connect(host, port, protocol);</span>
<span class="line" id="L1013"></span>
<span class="line" id="L1014"> <span class="tok-kw">var</span> req: Request = .{</span>
<span class="line" id="L1015"> .uri = uri,</span>
<span class="line" id="L1016"> .client = client,</span>
<span class="line" id="L1017"> .connection = conn,</span>
<span class="line" id="L1018"> .headers = headers,</span>
<span class="line" id="L1019"> .method = method,</span>
<span class="line" id="L1020"> .version = options.version,</span>
<span class="line" id="L1021"> .redirects_left = options.max_redirects,</span>
<span class="line" id="L1022"> .handle_redirects = options.handle_redirects,</span>
<span class="line" id="L1023"> .response = .{</span>
<span class="line" id="L1024"> .status = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1025"> .reason = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1026"> .version = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1027"> .headers = http.Headers{ .allocator = client.allocator, .owned = <span class="tok-null">false</span> },</span>
<span class="line" id="L1028"> .parser = <span class="tok-kw">switch</span> (options.header_strategy) {</span>
<span class="line" id="L1029"> .dynamic => |max| proto.HeadersParser.initDynamic(max),</span>
<span class="line" id="L1030"> .static => |buf| proto.HeadersParser.initStatic(buf),</span>
<span class="line" id="L1031"> },</span>
<span class="line" id="L1032"> },</span>
<span class="line" id="L1033"> .arena = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1034"> };</span>
<span class="line" id="L1035"> <span class="tok-kw">errdefer</span> req.deinit();</span>
<span class="line" id="L1036"></span>
<span class="line" id="L1037"> req.arena = std.heap.ArenaAllocator.init(client.allocator);</span>
<span class="line" id="L1038"></span>
<span class="line" id="L1039"> <span class="tok-kw">return</span> req;</span>
<span class="line" id="L1040">}</span>
<span class="line" id="L1041"></span>
<span class="line" id="L1042"><span class="tok-kw">test</span> {</span>
<span class="line" id="L1043"> <span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L1044"> <span class="tok-kw">const</span> native_endian = <span class="tok-kw">comptime</span> builtin.cpu.arch.endian();</span>
<span class="line" id="L1045"> <span class="tok-kw">if</span> (builtin.zig_backend == .stage2_llvm <span class="tok-kw">and</span> native_endian == .Big) {</span>
<span class="line" id="L1046"> <span class="tok-comment">// https://github.com/ziglang/zig/issues/13782</span>
</span>
<span class="line" id="L1047"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L1048"> }</span>
<span class="line" id="L1049"></span>
<span class="line" id="L1050"> <span class="tok-kw">if</span> (builtin.os.tag == .wasi) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L1051"></span>
<span class="line" id="L1052"> std.testing.refAllDecls(<span class="tok-builtin">@This</span>());</span>
<span class="line" id="L1053">}</span>
<span class="line" id="L1054"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L4"></span>
<span class="line" id="L5"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> ascii = std.ascii;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L8"></span>
<span class="line" id="L9"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> HeaderList = std.ArrayListUnmanaged(Field);</span>
<span class="line" id="L10"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> HeaderIndexList = std.ArrayListUnmanaged(<span class="tok-type">usize</span>);</span>
<span class="line" id="L11"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> HeaderIndex = std.HashMapUnmanaged([]<span class="tok-kw">const</span> <span class="tok-type">u8</span>, HeaderIndexList, CaseInsensitiveStringContext, std.hash_map.default_max_load_percentage);</span>
<span class="line" id="L12"></span>
<span class="line" id="L13"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> CaseInsensitiveStringContext = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L14"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hash</span>(self: <span class="tok-builtin">@This</span>(), s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L15"> _ = self;</span>
<span class="line" id="L16"> <span class="tok-kw">var</span> buf: [<span class="tok-number">64</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L17"> <span class="tok-kw">var</span> i: <span class="tok-type">u8</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L18"></span>
<span class="line" id="L19"> <span class="tok-kw">var</span> h = std.hash.Wyhash.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L20"> <span class="tok-kw">while</span> (i < s.len) : (i += <span class="tok-number">64</span>) {</span>
<span class="line" id="L21"> <span class="tok-kw">const</span> left = <span class="tok-builtin">@min</span>(<span class="tok-number">64</span>, s.len - i);</span>
<span class="line" id="L22"> <span class="tok-kw">const</span> ret = ascii.lowerString(buf[<span class="tok-number">0</span>..], s[i..][<span class="tok-number">0</span>..left]);</span>
<span class="line" id="L23"> h.update(ret);</span>
<span class="line" id="L24"> }</span>
<span class="line" id="L25"></span>
<span class="line" id="L26"> <span class="tok-kw">return</span> h.final();</span>
<span class="line" id="L27"> }</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">eql</span>(self: <span class="tok-builtin">@This</span>(), a: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, b: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L30"> _ = self;</span>
<span class="line" id="L31"> <span class="tok-kw">return</span> ascii.eqlIgnoreCase(a, b);</span>
<span class="line" id="L32"> }</span>
<span class="line" id="L33">};</span>
<span class="line" id="L34"></span>
<span class="line" id="L35"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Field = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L36"> name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L37"> value: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L38"></span>
<span class="line" id="L39"> <span class="tok-kw">fn</span> <span class="tok-fn">lessThan</span>(ctx: <span class="tok-type">void</span>, a: Field, b: Field) <span class="tok-type">bool</span> {</span>
<span class="line" id="L40"> _ = ctx;</span>
<span class="line" id="L41"> <span class="tok-kw">if</span> (a.name.ptr == b.name.ptr) <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"> <span class="tok-kw">return</span> ascii.lessThanIgnoreCase(a.name, b.name);</span>
<span class="line" id="L44"> }</span>
<span class="line" id="L45">};</span>
<span class="line" id="L46"></span>
<span class="line" id="L47"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Headers = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L48"> allocator: Allocator,</span>
<span class="line" id="L49"> list: HeaderList = .{},</span>
<span class="line" id="L50"> index: HeaderIndex = .{},</span>
<span class="line" id="L51"></span>
<span class="line" id="L52"> <span class="tok-comment">/// When this is false, names and values will not be duplicated.</span></span>
<span class="line" id="L53"> <span class="tok-comment">/// Use with caution.</span></span>
<span class="line" id="L54"> owned: <span class="tok-type">bool</span> = <span class="tok-null">true</span>,</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(allocator: Allocator) Headers {</span>
<span class="line" id="L57"> <span class="tok-kw">return</span> .{ .allocator = allocator };</span>
<span class="line" id="L58"> }</span>
<span class="line" id="L59"></span>
<span class="line" id="L60"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(headers: *Headers) <span class="tok-type">void</span> {</span>
<span class="line" id="L61"> headers.deallocateIndexListsAndFields();</span>
<span class="line" id="L62"> headers.index.deinit(headers.allocator);</span>
<span class="line" id="L63"> headers.list.deinit(headers.allocator);</span>
<span class="line" id="L64"></span>
<span class="line" id="L65"> headers.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L66"> }</span>
<span class="line" id="L67"></span>
<span class="line" id="L68"> <span class="tok-comment">/// Appends a header to the list. Both name and value are copied.</span></span>
<span class="line" id="L69"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">append</span>(headers: *Headers, name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, value: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L70"> <span class="tok-kw">const</span> n = headers.list.items.len;</span>
<span class="line" id="L71"></span>
<span class="line" id="L72"> <span class="tok-kw">const</span> value_duped = <span class="tok-kw">if</span> (headers.owned) <span class="tok-kw">try</span> headers.allocator.dupe(<span class="tok-type">u8</span>, value) <span class="tok-kw">else</span> value;</span>
<span class="line" id="L73"> <span class="tok-kw">errdefer</span> <span class="tok-kw">if</span> (headers.owned) headers.allocator.free(value_duped);</span>
<span class="line" id="L74"></span>
<span class="line" id="L75"> <span class="tok-kw">var</span> entry = Field{ .name = <span class="tok-null">undefined</span>, .value = value_duped };</span>
<span class="line" id="L76"></span>
<span class="line" id="L77"> <span class="tok-kw">if</span> (headers.index.getEntry(name)) |kv| {</span>
<span class="line" id="L78"> entry.name = kv.key_ptr.*;</span>
<span class="line" id="L79"> <span class="tok-kw">try</span> kv.value_ptr.append(headers.allocator, n);</span>
<span class="line" id="L80"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L81"> <span class="tok-kw">const</span> name_duped = <span class="tok-kw">if</span> (headers.owned) <span class="tok-kw">try</span> headers.allocator.dupe(<span class="tok-type">u8</span>, name) <span class="tok-kw">else</span> name;</span>
<span class="line" id="L82"> <span class="tok-kw">errdefer</span> <span class="tok-kw">if</span> (headers.owned) headers.allocator.free(name_duped);</span>
<span class="line" id="L83"></span>
<span class="line" id="L84"> entry.name = name_duped;</span>
<span class="line" id="L85"></span>
<span class="line" id="L86"> <span class="tok-kw">var</span> new_index = <span class="tok-kw">try</span> HeaderIndexList.initCapacity(headers.allocator, <span class="tok-number">1</span>);</span>
<span class="line" id="L87"> <span class="tok-kw">errdefer</span> new_index.deinit(headers.allocator);</span>
<span class="line" id="L88"></span>
<span class="line" id="L89"> new_index.appendAssumeCapacity(n);</span>
<span class="line" id="L90"> <span class="tok-kw">try</span> headers.index.put(headers.allocator, name_duped, new_index);</span>
<span class="line" id="L91"> }</span>
<span class="line" id="L92"></span>
<span class="line" id="L93"> <span class="tok-kw">try</span> headers.list.append(headers.allocator, entry);</span>
<span class="line" id="L94"> }</span>
<span class="line" id="L95"></span>
<span class="line" id="L96"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">contains</span>(headers: Headers, name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L97"> <span class="tok-kw">return</span> headers.index.contains(name);</span>
<span class="line" id="L98"> }</span>
<span class="line" id="L99"></span>
<span class="line" id="L100"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">delete</span>(headers: *Headers, name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L101"> <span class="tok-kw">if</span> (headers.index.fetchRemove(name)) |kv| {</span>
<span class="line" id="L102"> <span class="tok-kw">var</span> index = kv.value;</span>
<span class="line" id="L103"></span>
<span class="line" id="L104"> <span class="tok-comment">// iterate backwards</span>
</span>
<span class="line" id="L105"> <span class="tok-kw">var</span> i = index.items.len;</span>
<span class="line" id="L106"> <span class="tok-kw">while</span> (i > <span class="tok-number">0</span>) {</span>
<span class="line" id="L107"> i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L108"> <span class="tok-kw">const</span> data_index = index.items[i];</span>
<span class="line" id="L109"> <span class="tok-kw">const</span> removed = headers.list.orderedRemove(data_index);</span>
<span class="line" id="L110"></span>
<span class="line" id="L111"> assert(ascii.eqlIgnoreCase(removed.name, name)); <span class="tok-comment">// ensure the index hasn't been corrupted</span>
</span>
<span class="line" id="L112"> <span class="tok-kw">if</span> (headers.owned) headers.allocator.free(removed.value);</span>
<span class="line" id="L113"> }</span>
<span class="line" id="L114"></span>
<span class="line" id="L115"> <span class="tok-kw">if</span> (headers.owned) headers.allocator.free(kv.key);</span>
<span class="line" id="L116"> index.deinit(headers.allocator);</span>
<span class="line" id="L117"> headers.rebuildIndex();</span>
<span class="line" id="L118"></span>
<span class="line" id="L119"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L120"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L121"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L122"> }</span>
<span class="line" id="L123"> }</span>
<span class="line" id="L124"></span>
<span class="line" id="L125"> <span class="tok-comment">/// Returns the index of the first occurrence of a header with the given name.</span></span>
<span class="line" id="L126"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">firstIndexOf</span>(headers: Headers, name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) ?<span class="tok-type">usize</span> {</span>
<span class="line" id="L127"> <span class="tok-kw">const</span> index = headers.index.get(name) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L128"></span>
<span class="line" id="L129"> <span class="tok-kw">return</span> index.items[<span class="tok-number">0</span>];</span>
<span class="line" id="L130"> }</span>
<span class="line" id="L131"></span>
<span class="line" id="L132"> <span class="tok-comment">/// Returns a list of indices containing headers with the given name.</span></span>
<span class="line" id="L133"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getIndices</span>(headers: Headers, name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) ?[]<span class="tok-kw">const</span> <span class="tok-type">usize</span> {</span>
<span class="line" id="L134"> <span class="tok-kw">const</span> index = headers.index.get(name) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L135"></span>
<span class="line" id="L136"> <span class="tok-kw">return</span> index.items;</span>
<span class="line" id="L137"> }</span>
<span class="line" id="L138"></span>
<span class="line" id="L139"> <span class="tok-comment">/// Returns the entry of the first occurrence of a header with the given name.</span></span>
<span class="line" id="L140"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getFirstEntry</span>(headers: Headers, name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) ?Field {</span>
<span class="line" id="L141"> <span class="tok-kw">const</span> first_index = headers.firstIndexOf(name) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L142"></span>
<span class="line" id="L143"> <span class="tok-kw">return</span> headers.list.items[first_index];</span>
<span class="line" id="L144"> }</span>
<span class="line" id="L145"></span>
<span class="line" id="L146"> <span class="tok-comment">/// Returns a slice containing each header with the given name.</span></span>
<span class="line" id="L147"> <span class="tok-comment">/// The caller owns the returned slice, but NOT the values in the slice.</span></span>
<span class="line" id="L148"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getEntries</span>(headers: Headers, allocator: Allocator, name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !?[]<span class="tok-kw">const</span> Field {</span>
<span class="line" id="L149"> <span class="tok-kw">const</span> indices = headers.getIndices(name) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L150"></span>
<span class="line" id="L151"> <span class="tok-kw">const</span> buf = <span class="tok-kw">try</span> allocator.alloc(Field, indices.len);</span>
<span class="line" id="L152"> <span class="tok-kw">for</span> (indices, <span class="tok-number">0</span>..) |idx, n| {</span>
<span class="line" id="L153"> buf[n] = headers.list.items[idx];</span>
<span class="line" id="L154"> }</span>
<span class="line" id="L155"></span>
<span class="line" id="L156"> <span class="tok-kw">return</span> buf;</span>
<span class="line" id="L157"> }</span>
<span class="line" id="L158"></span>
<span class="line" id="L159"> <span class="tok-comment">/// Returns the value in the entry of the first occurrence of a header with the given name.</span></span>
<span class="line" id="L160"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getFirstValue</span>(headers: Headers, name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) ?[]<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L161"> <span class="tok-kw">const</span> first_index = headers.firstIndexOf(name) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L162"></span>
<span class="line" id="L163"> <span class="tok-kw">return</span> headers.list.items[first_index].value;</span>
<span class="line" id="L164"> }</span>
<span class="line" id="L165"></span>
<span class="line" id="L166"> <span class="tok-comment">/// Returns a slice containing the value of each header with the given name.</span></span>
<span class="line" id="L167"> <span class="tok-comment">/// The caller owns the returned slice, but NOT the values in the slice.</span></span>
<span class="line" id="L168"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getValues</span>(headers: Headers, allocator: Allocator, name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !?[]<span class="tok-kw">const</span> []<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L169"> <span class="tok-kw">const</span> indices = headers.getIndices(name) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L170"></span>
<span class="line" id="L171"> <span class="tok-kw">const</span> buf = <span class="tok-kw">try</span> allocator.alloc([]<span class="tok-kw">const</span> <span class="tok-type">u8</span>, indices.len);</span>
<span class="line" id="L172"> <span class="tok-kw">for</span> (indices, <span class="tok-number">0</span>..) |idx, n| {</span>
<span class="line" id="L173"> buf[n] = headers.list.items[idx].value;</span>
<span class="line" id="L174"> }</span>
<span class="line" id="L175"></span>
<span class="line" id="L176"> <span class="tok-kw">return</span> buf;</span>
<span class="line" id="L177"> }</span>
<span class="line" id="L178"></span>
<span class="line" id="L179"> <span class="tok-kw">fn</span> <span class="tok-fn">rebuildIndex</span>(headers: *Headers) <span class="tok-type">void</span> {</span>
<span class="line" id="L180"> <span class="tok-comment">// clear out the indexes</span>
</span>
<span class="line" id="L181"> <span class="tok-kw">var</span> it = headers.index.iterator();</span>
<span class="line" id="L182"> <span class="tok-kw">while</span> (it.next()) |entry| {</span>
<span class="line" id="L183"> entry.value_ptr.shrinkRetainingCapacity(<span class="tok-number">0</span>);</span>
<span class="line" id="L184"> }</span>
<span class="line" id="L185"></span>
<span class="line" id="L186"> <span class="tok-comment">// fill up indexes again; we know capacity is fine from before</span>
</span>
<span class="line" id="L187"> <span class="tok-kw">for</span> (headers.list.items, <span class="tok-number">0</span>..) |entry, i| {</span>
<span class="line" id="L188"> headers.index.getEntry(entry.name).?.value_ptr.appendAssumeCapacity(i);</span>
<span class="line" id="L189"> }</span>
<span class="line" id="L190"> }</span>
<span class="line" id="L191"></span>
<span class="line" id="L192"> <span class="tok-comment">/// Sorts the headers in lexicographical order.</span></span>
<span class="line" id="L193"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">sort</span>(headers: *Headers) <span class="tok-type">void</span> {</span>
<span class="line" id="L194"> std.mem.sort(Field, headers.list.items, {}, Field.lessThan);</span>
<span class="line" id="L195"> headers.rebuildIndex();</span>
<span class="line" id="L196"> }</span>
<span class="line" id="L197"></span>
<span class="line" id="L198"> <span class="tok-comment">/// Writes the headers to the given stream.</span></span>
<span class="line" id="L199"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">format</span>(</span>
<span class="line" id="L200"> headers: Headers,</span>
<span class="line" id="L201"> <span class="tok-kw">comptime</span> fmt: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L202"> options: std.fmt.FormatOptions,</span>
<span class="line" id="L203"> out_stream: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L204"> ) !<span class="tok-type">void</span> {</span>
<span class="line" id="L205"> _ = fmt;</span>
<span class="line" id="L206"> _ = options;</span>
<span class="line" id="L207"></span>
<span class="line" id="L208"> <span class="tok-kw">for</span> (headers.list.items) |entry| {</span>
<span class="line" id="L209"> <span class="tok-kw">if</span> (entry.value.len == <span class="tok-number">0</span>) <span class="tok-kw">continue</span>;</span>
<span class="line" id="L210"></span>
<span class="line" id="L211"> <span class="tok-kw">try</span> out_stream.writeAll(entry.name);</span>
<span class="line" id="L212"> <span class="tok-kw">try</span> out_stream.writeAll(<span class="tok-str">": "</span>);</span>
<span class="line" id="L213"> <span class="tok-kw">try</span> out_stream.writeAll(entry.value);</span>
<span class="line" id="L214"> <span class="tok-kw">try</span> out_stream.writeAll(<span class="tok-str">"\r\n"</span>);</span>
<span class="line" id="L215"> }</span>
<span class="line" id="L216"> }</span>
<span class="line" id="L217"></span>
<span class="line" id="L218"> <span class="tok-comment">/// Writes all of the headers with the given name to the given stream, separated by commas.</span></span>
<span class="line" id="L219"> <span class="tok-comment">///</span></span>
<span class="line" id="L220"> <span class="tok-comment">/// This is useful for headers like `Set-Cookie` which can have multiple values. RFC 9110, Section 5.2</span></span>
<span class="line" id="L221"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">formatCommaSeparated</span>(</span>
<span class="line" id="L222"> headers: Headers,</span>
<span class="line" id="L223"> name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L224"> out_stream: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L225"> ) !<span class="tok-type">void</span> {</span>
<span class="line" id="L226"> <span class="tok-kw">const</span> indices = headers.getIndices(name) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span>;</span>
<span class="line" id="L227"></span>
<span class="line" id="L228"> <span class="tok-kw">try</span> out_stream.writeAll(name);</span>
<span class="line" id="L229"> <span class="tok-kw">try</span> out_stream.writeAll(<span class="tok-str">": "</span>);</span>
<span class="line" id="L230"></span>
<span class="line" id="L231"> <span class="tok-kw">for</span> (indices, <span class="tok-number">0</span>..) |idx, n| {</span>
<span class="line" id="L232"> <span class="tok-kw">if</span> (n != <span class="tok-number">0</span>) <span class="tok-kw">try</span> out_stream.writeAll(<span class="tok-str">", "</span>);</span>
<span class="line" id="L233"> <span class="tok-kw">try</span> out_stream.writeAll(headers.list.items[idx].value);</span>
<span class="line" id="L234"> }</span>
<span class="line" id="L235"></span>
<span class="line" id="L236"> <span class="tok-kw">try</span> out_stream.writeAll(<span class="tok-str">"\r\n"</span>);</span>
<span class="line" id="L237"> }</span>
<span class="line" id="L238"></span>
<span class="line" id="L239"> <span class="tok-comment">/// Frees all `HeaderIndexList`s within `index`</span></span>
<span class="line" id="L240"> <span class="tok-comment">/// Frees names and values of all fields if they are owned.</span></span>
<span class="line" id="L241"> <span class="tok-kw">fn</span> <span class="tok-fn">deallocateIndexListsAndFields</span>(headers: *Headers) <span class="tok-type">void</span> {</span>
<span class="line" id="L242"> <span class="tok-kw">var</span> it = headers.index.iterator();</span>
<span class="line" id="L243"> <span class="tok-kw">while</span> (it.next()) |entry| {</span>
<span class="line" id="L244"> entry.value_ptr.deinit(headers.allocator);</span>
<span class="line" id="L245"></span>
<span class="line" id="L246"> <span class="tok-kw">if</span> (headers.owned) headers.allocator.free(entry.key_ptr.*);</span>
<span class="line" id="L247"> }</span>
<span class="line" id="L248"></span>
<span class="line" id="L249"> <span class="tok-kw">if</span> (headers.owned) {</span>
<span class="line" id="L250"> <span class="tok-kw">for</span> (headers.list.items) |entry| {</span>
<span class="line" id="L251"> headers.allocator.free(entry.value);</span>
<span class="line" id="L252"> }</span>
<span class="line" id="L253"> }</span>
<span class="line" id="L254"> }</span>
<span class="line" id="L255"></span>
<span class="line" id="L256"> <span class="tok-comment">/// Clears and frees the underlying data structures.</span></span>
<span class="line" id="L257"> <span class="tok-comment">/// Frees names and values if they are owned.</span></span>
<span class="line" id="L258"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">clearAndFree</span>(headers: *Headers) <span class="tok-type">void</span> {</span>
<span class="line" id="L259"> headers.deallocateIndexListsAndFields();</span>
<span class="line" id="L260"> headers.index.clearAndFree(headers.allocator);</span>
<span class="line" id="L261"> headers.list.clearAndFree(headers.allocator);</span>
<span class="line" id="L262"> }</span>
<span class="line" id="L263"></span>
<span class="line" id="L264"> <span class="tok-comment">/// Clears the underlying data structures while retaining their capacities.</span></span>
<span class="line" id="L265"> <span class="tok-comment">/// Frees names and values if they are owned.</span></span>
<span class="line" id="L266"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">clearRetainingCapacity</span>(headers: *Headers) <span class="tok-type">void</span> {</span>
<span class="line" id="L267"> headers.deallocateIndexListsAndFields();</span>
<span class="line" id="L268"> headers.index.clearRetainingCapacity();</span>
<span class="line" id="L269"> headers.list.clearRetainingCapacity();</span>
<span class="line" id="L270"> }</span>
<span class="line" id="L271">};</span>
<span class="line" id="L272"></span>
<span class="line" id="L273"><span class="tok-kw">test</span> <span class="tok-str">"Headers.append"</span> {</span>
<span class="line" id="L274"> <span class="tok-kw">var</span> h = Headers{ .allocator = std.testing.allocator };</span>
<span class="line" id="L275"> <span class="tok-kw">defer</span> h.deinit();</span>
<span class="line" id="L276"></span>
<span class="line" id="L277"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"foo"</span>, <span class="tok-str">"bar"</span>);</span>
<span class="line" id="L278"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"hello"</span>, <span class="tok-str">"world"</span>);</span>
<span class="line" id="L279"></span>
<span class="line" id="L280"> <span class="tok-kw">try</span> testing.expect(h.contains(<span class="tok-str">"Foo"</span>));</span>
<span class="line" id="L281"> <span class="tok-kw">try</span> testing.expect(!h.contains(<span class="tok-str">"Bar"</span>));</span>
<span class="line" id="L282">}</span>
<span class="line" id="L283"></span>
<span class="line" id="L284"><span class="tok-kw">test</span> <span class="tok-str">"Headers.delete"</span> {</span>
<span class="line" id="L285"> <span class="tok-kw">var</span> h = Headers{ .allocator = std.testing.allocator };</span>
<span class="line" id="L286"> <span class="tok-kw">defer</span> h.deinit();</span>
<span class="line" id="L287"></span>
<span class="line" id="L288"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"foo"</span>, <span class="tok-str">"bar"</span>);</span>
<span class="line" id="L289"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"hello"</span>, <span class="tok-str">"world"</span>);</span>
<span class="line" id="L290"></span>
<span class="line" id="L291"> <span class="tok-kw">try</span> testing.expect(h.contains(<span class="tok-str">"Foo"</span>));</span>
<span class="line" id="L292"></span>
<span class="line" id="L293"> _ = h.delete(<span class="tok-str">"Foo"</span>);</span>
<span class="line" id="L294"></span>
<span class="line" id="L295"> <span class="tok-kw">try</span> testing.expect(!h.contains(<span class="tok-str">"foo"</span>));</span>
<span class="line" id="L296">}</span>
<span class="line" id="L297"></span>
<span class="line" id="L298"><span class="tok-kw">test</span> <span class="tok-str">"Headers consistency"</span> {</span>
<span class="line" id="L299"> <span class="tok-kw">var</span> h = Headers{ .allocator = std.testing.allocator };</span>
<span class="line" id="L300"> <span class="tok-kw">defer</span> h.deinit();</span>
<span class="line" id="L301"></span>
<span class="line" id="L302"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"foo"</span>, <span class="tok-str">"bar"</span>);</span>
<span class="line" id="L303"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"hello"</span>, <span class="tok-str">"world"</span>);</span>
<span class="line" id="L304"> _ = h.delete(<span class="tok-str">"Foo"</span>);</span>
<span class="line" id="L305"></span>
<span class="line" id="L306"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"foo"</span>, <span class="tok-str">"bar"</span>);</span>
<span class="line" id="L307"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"bar"</span>, <span class="tok-str">"world"</span>);</span>
<span class="line" id="L308"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"foo"</span>, <span class="tok-str">"baz"</span>);</span>
<span class="line" id="L309"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"baz"</span>, <span class="tok-str">"hello"</span>);</span>
<span class="line" id="L310"></span>
<span class="line" id="L311"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(?<span class="tok-type">usize</span>, <span class="tok-number">0</span>), h.firstIndexOf(<span class="tok-str">"hello"</span>));</span>
<span class="line" id="L312"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(?<span class="tok-type">usize</span>, <span class="tok-number">1</span>), h.firstIndexOf(<span class="tok-str">"foo"</span>));</span>
<span class="line" id="L313"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(?<span class="tok-type">usize</span>, <span class="tok-number">2</span>), h.firstIndexOf(<span class="tok-str">"bar"</span>));</span>
<span class="line" id="L314"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(?<span class="tok-type">usize</span>, <span class="tok-number">4</span>), h.firstIndexOf(<span class="tok-str">"baz"</span>));</span>
<span class="line" id="L315"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(?<span class="tok-type">usize</span>, <span class="tok-null">null</span>), h.firstIndexOf(<span class="tok-str">"pog"</span>));</span>
<span class="line" id="L316"></span>
<span class="line" id="L317"> <span class="tok-kw">try</span> testing.expectEqualSlices(<span class="tok-type">usize</span>, &[_]<span class="tok-type">usize</span>{<span class="tok-number">0</span>}, h.getIndices(<span class="tok-str">"hello"</span>).?);</span>
<span class="line" id="L318"> <span class="tok-kw">try</span> testing.expectEqualSlices(<span class="tok-type">usize</span>, &[_]<span class="tok-type">usize</span>{ <span class="tok-number">1</span>, <span class="tok-number">3</span> }, h.getIndices(<span class="tok-str">"foo"</span>).?);</span>
<span class="line" id="L319"> <span class="tok-kw">try</span> testing.expectEqualSlices(<span class="tok-type">usize</span>, &[_]<span class="tok-type">usize</span>{<span class="tok-number">2</span>}, h.getIndices(<span class="tok-str">"bar"</span>).?);</span>
<span class="line" id="L320"> <span class="tok-kw">try</span> testing.expectEqualSlices(<span class="tok-type">usize</span>, &[_]<span class="tok-type">usize</span>{<span class="tok-number">4</span>}, h.getIndices(<span class="tok-str">"baz"</span>).?);</span>
<span class="line" id="L321"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(?[]<span class="tok-kw">const</span> <span class="tok-type">usize</span>, <span class="tok-null">null</span>), h.getIndices(<span class="tok-str">"pog"</span>));</span>
<span class="line" id="L322"></span>
<span class="line" id="L323"> <span class="tok-kw">try</span> testing.expectEqualStrings(<span class="tok-str">"world"</span>, h.getFirstEntry(<span class="tok-str">"hello"</span>).?.value);</span>
<span class="line" id="L324"> <span class="tok-kw">try</span> testing.expectEqualStrings(<span class="tok-str">"bar"</span>, h.getFirstEntry(<span class="tok-str">"foo"</span>).?.value);</span>
<span class="line" id="L325"> <span class="tok-kw">try</span> testing.expectEqualStrings(<span class="tok-str">"world"</span>, h.getFirstEntry(<span class="tok-str">"bar"</span>).?.value);</span>
<span class="line" id="L326"> <span class="tok-kw">try</span> testing.expectEqualStrings(<span class="tok-str">"hello"</span>, h.getFirstEntry(<span class="tok-str">"baz"</span>).?.value);</span>
<span class="line" id="L327"></span>
<span class="line" id="L328"> <span class="tok-kw">const</span> hello_entries = (<span class="tok-kw">try</span> h.getEntries(testing.allocator, <span class="tok-str">"hello"</span>)).?;</span>
<span class="line" id="L329"> <span class="tok-kw">defer</span> testing.allocator.free(hello_entries);</span>
<span class="line" id="L330"> <span class="tok-kw">try</span> testing.expectEqualDeep(<span class="tok-builtin">@as</span>([]<span class="tok-kw">const</span> Field, &[_]Field{</span>
<span class="line" id="L331"> .{ .name = <span class="tok-str">"hello"</span>, .value = <span class="tok-str">"world"</span> },</span>
<span class="line" id="L332"> }), hello_entries);</span>
<span class="line" id="L333"></span>
<span class="line" id="L334"> <span class="tok-kw">const</span> foo_entries = (<span class="tok-kw">try</span> h.getEntries(testing.allocator, <span class="tok-str">"foo"</span>)).?;</span>
<span class="line" id="L335"> <span class="tok-kw">defer</span> testing.allocator.free(foo_entries);</span>
<span class="line" id="L336"> <span class="tok-kw">try</span> testing.expectEqualDeep(<span class="tok-builtin">@as</span>([]<span class="tok-kw">const</span> Field, &[_]Field{</span>
<span class="line" id="L337"> .{ .name = <span class="tok-str">"foo"</span>, .value = <span class="tok-str">"bar"</span> },</span>
<span class="line" id="L338"> .{ .name = <span class="tok-str">"foo"</span>, .value = <span class="tok-str">"baz"</span> },</span>
<span class="line" id="L339"> }), foo_entries);</span>
<span class="line" id="L340"></span>
<span class="line" id="L341"> <span class="tok-kw">const</span> bar_entries = (<span class="tok-kw">try</span> h.getEntries(testing.allocator, <span class="tok-str">"bar"</span>)).?;</span>
<span class="line" id="L342"> <span class="tok-kw">defer</span> testing.allocator.free(bar_entries);</span>
<span class="line" id="L343"> <span class="tok-kw">try</span> testing.expectEqualDeep(<span class="tok-builtin">@as</span>([]<span class="tok-kw">const</span> Field, &[_]Field{</span>
<span class="line" id="L344"> .{ .name = <span class="tok-str">"bar"</span>, .value = <span class="tok-str">"world"</span> },</span>
<span class="line" id="L345"> }), bar_entries);</span>
<span class="line" id="L346"></span>
<span class="line" id="L347"> <span class="tok-kw">const</span> baz_entries = (<span class="tok-kw">try</span> h.getEntries(testing.allocator, <span class="tok-str">"baz"</span>)).?;</span>
<span class="line" id="L348"> <span class="tok-kw">defer</span> testing.allocator.free(baz_entries);</span>
<span class="line" id="L349"> <span class="tok-kw">try</span> testing.expectEqualDeep(<span class="tok-builtin">@as</span>([]<span class="tok-kw">const</span> Field, &[_]Field{</span>
<span class="line" id="L350"> .{ .name = <span class="tok-str">"baz"</span>, .value = <span class="tok-str">"hello"</span> },</span>
<span class="line" id="L351"> }), baz_entries);</span>
<span class="line" id="L352"></span>
<span class="line" id="L353"> <span class="tok-kw">const</span> pog_entries = (<span class="tok-kw">try</span> h.getEntries(testing.allocator, <span class="tok-str">"pog"</span>));</span>
<span class="line" id="L354"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(?[]<span class="tok-kw">const</span> Field, <span class="tok-null">null</span>), pog_entries);</span>
<span class="line" id="L355"></span>
<span class="line" id="L356"> <span class="tok-kw">try</span> testing.expectEqualStrings(<span class="tok-str">"world"</span>, h.getFirstValue(<span class="tok-str">"hello"</span>).?);</span>
<span class="line" id="L357"> <span class="tok-kw">try</span> testing.expectEqualStrings(<span class="tok-str">"bar"</span>, h.getFirstValue(<span class="tok-str">"foo"</span>).?);</span>
<span class="line" id="L358"> <span class="tok-kw">try</span> testing.expectEqualStrings(<span class="tok-str">"world"</span>, h.getFirstValue(<span class="tok-str">"bar"</span>).?);</span>
<span class="line" id="L359"> <span class="tok-kw">try</span> testing.expectEqualStrings(<span class="tok-str">"hello"</span>, h.getFirstValue(<span class="tok-str">"baz"</span>).?);</span>
<span class="line" id="L360"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(?[]<span class="tok-kw">const</span> <span class="tok-type">u8</span>, <span class="tok-null">null</span>), h.getFirstValue(<span class="tok-str">"pog"</span>));</span>
<span class="line" id="L361"></span>
<span class="line" id="L362"> <span class="tok-kw">const</span> hello_values = (<span class="tok-kw">try</span> h.getValues(testing.allocator, <span class="tok-str">"hello"</span>)).?;</span>
<span class="line" id="L363"> <span class="tok-kw">defer</span> testing.allocator.free(hello_values);</span>
<span class="line" id="L364"> <span class="tok-kw">try</span> testing.expectEqualDeep(<span class="tok-builtin">@as</span>([]<span class="tok-kw">const</span> []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, &[_][]<span class="tok-kw">const</span> <span class="tok-type">u8</span>{<span class="tok-str">"world"</span>}), hello_values);</span>
<span class="line" id="L365"></span>
<span class="line" id="L366"> <span class="tok-kw">const</span> foo_values = (<span class="tok-kw">try</span> h.getValues(testing.allocator, <span class="tok-str">"foo"</span>)).?;</span>
<span class="line" id="L367"> <span class="tok-kw">defer</span> testing.allocator.free(foo_values);</span>
<span class="line" id="L368"> <span class="tok-kw">try</span> testing.expectEqualDeep(<span class="tok-builtin">@as</span>([]<span class="tok-kw">const</span> []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, &[_][]<span class="tok-kw">const</span> <span class="tok-type">u8</span>{ <span class="tok-str">"bar"</span>, <span class="tok-str">"baz"</span> }), foo_values);</span>
<span class="line" id="L369"></span>
<span class="line" id="L370"> <span class="tok-kw">const</span> bar_values = (<span class="tok-kw">try</span> h.getValues(testing.allocator, <span class="tok-str">"bar"</span>)).?;</span>
<span class="line" id="L371"> <span class="tok-kw">defer</span> testing.allocator.free(bar_values);</span>
<span class="line" id="L372"> <span class="tok-kw">try</span> testing.expectEqualDeep(<span class="tok-builtin">@as</span>([]<span class="tok-kw">const</span> []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, &[_][]<span class="tok-kw">const</span> <span class="tok-type">u8</span>{<span class="tok-str">"world"</span>}), bar_values);</span>
<span class="line" id="L373"></span>
<span class="line" id="L374"> <span class="tok-kw">const</span> baz_values = (<span class="tok-kw">try</span> h.getValues(testing.allocator, <span class="tok-str">"baz"</span>)).?;</span>
<span class="line" id="L375"> <span class="tok-kw">defer</span> testing.allocator.free(baz_values);</span>
<span class="line" id="L376"> <span class="tok-kw">try</span> testing.expectEqualDeep(<span class="tok-builtin">@as</span>([]<span class="tok-kw">const</span> []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, &[_][]<span class="tok-kw">const</span> <span class="tok-type">u8</span>{<span class="tok-str">"hello"</span>}), baz_values);</span>
<span class="line" id="L377"></span>
<span class="line" id="L378"> <span class="tok-kw">const</span> pog_values = (<span class="tok-kw">try</span> h.getValues(testing.allocator, <span class="tok-str">"pog"</span>));</span>
<span class="line" id="L379"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(?[]<span class="tok-kw">const</span> []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, <span class="tok-null">null</span>), pog_values);</span>
<span class="line" id="L380"></span>
<span class="line" id="L381"> h.sort();</span>
<span class="line" id="L382"></span>
<span class="line" id="L383"> <span class="tok-kw">try</span> testing.expectEqualSlices(<span class="tok-type">usize</span>, &[_]<span class="tok-type">usize</span>{<span class="tok-number">0</span>}, h.getIndices(<span class="tok-str">"bar"</span>).?);</span>
<span class="line" id="L384"> <span class="tok-kw">try</span> testing.expectEqualSlices(<span class="tok-type">usize</span>, &[_]<span class="tok-type">usize</span>{<span class="tok-number">1</span>}, h.getIndices(<span class="tok-str">"baz"</span>).?);</span>
<span class="line" id="L385"> <span class="tok-kw">try</span> testing.expectEqualSlices(<span class="tok-type">usize</span>, &[_]<span class="tok-type">usize</span>{ <span class="tok-number">2</span>, <span class="tok-number">3</span> }, h.getIndices(<span class="tok-str">"foo"</span>).?);</span>
<span class="line" id="L386"> <span class="tok-kw">try</span> testing.expectEqualSlices(<span class="tok-type">usize</span>, &[_]<span class="tok-type">usize</span>{<span class="tok-number">4</span>}, h.getIndices(<span class="tok-str">"hello"</span>).?);</span>
<span class="line" id="L387"></span>
<span class="line" id="L388"> <span class="tok-kw">const</span> formatted_values = <span class="tok-kw">try</span> std.fmt.allocPrint(testing.allocator, <span class="tok-str">"{}"</span>, .{h});</span>
<span class="line" id="L389"> <span class="tok-kw">defer</span> testing.allocator.free(formatted_values);</span>
<span class="line" id="L390"></span>
<span class="line" id="L391"> <span class="tok-kw">try</span> testing.expectEqualStrings(<span class="tok-str">"bar: world\r\nbaz: hello\r\nfoo: bar\r\nfoo: baz\r\nhello: world\r\n"</span>, formatted_values);</span>
<span class="line" id="L392"></span>
<span class="line" id="L393"> <span class="tok-kw">var</span> buf: [<span class="tok-number">128</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L394"> <span class="tok-kw">var</span> fbs = std.io.fixedBufferStream(&buf);</span>
<span class="line" id="L395"> <span class="tok-kw">const</span> writer = fbs.writer();</span>
<span class="line" id="L396"></span>
<span class="line" id="L397"> <span class="tok-kw">try</span> h.formatCommaSeparated(<span class="tok-str">"foo"</span>, writer);</span>
<span class="line" id="L398"> <span class="tok-kw">try</span> testing.expectEqualStrings(<span class="tok-str">"foo: bar, baz\r\n"</span>, fbs.getWritten());</span>
<span class="line" id="L399">}</span>
<span class="line" id="L400"></span>
<span class="line" id="L401"><span class="tok-kw">test</span> <span class="tok-str">"Headers.clearRetainingCapacity and clearAndFree"</span> {</span>
<span class="line" id="L402"> <span class="tok-kw">var</span> h = Headers.init(std.testing.allocator);</span>
<span class="line" id="L403"> <span class="tok-kw">defer</span> h.deinit();</span>
<span class="line" id="L404"></span>
<span class="line" id="L405"> h.clearRetainingCapacity();</span>
<span class="line" id="L406"></span>
<span class="line" id="L407"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"foo"</span>, <span class="tok-str">"bar"</span>);</span>
<span class="line" id="L408"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"bar"</span>, <span class="tok-str">"world"</span>);</span>
<span class="line" id="L409"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"foo"</span>, <span class="tok-str">"baz"</span>);</span>
<span class="line" id="L410"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"baz"</span>, <span class="tok-str">"hello"</span>);</span>
<span class="line" id="L411"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">4</span>), h.list.items.len);</span>
<span class="line" id="L412"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">3</span>), h.index.count());</span>
<span class="line" id="L413"> <span class="tok-kw">const</span> list_capacity = h.list.capacity;</span>
<span class="line" id="L414"> <span class="tok-kw">const</span> index_capacity = h.index.capacity();</span>
<span class="line" id="L415"></span>
<span class="line" id="L416"> h.clearRetainingCapacity();</span>
<span class="line" id="L417"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">0</span>), h.list.items.len);</span>
<span class="line" id="L418"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">0</span>), h.index.count());</span>
<span class="line" id="L419"> <span class="tok-kw">try</span> testing.expectEqual(list_capacity, h.list.capacity);</span>
<span class="line" id="L420"> <span class="tok-kw">try</span> testing.expectEqual(index_capacity, h.index.capacity());</span>
<span class="line" id="L421"></span>
<span class="line" id="L422"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"foo"</span>, <span class="tok-str">"bar"</span>);</span>
<span class="line" id="L423"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"bar"</span>, <span class="tok-str">"world"</span>);</span>
<span class="line" id="L424"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"foo"</span>, <span class="tok-str">"baz"</span>);</span>
<span class="line" id="L425"> <span class="tok-kw">try</span> h.append(<span class="tok-str">"baz"</span>, <span class="tok-str">"hello"</span>);</span>
<span class="line" id="L426"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">4</span>), h.list.items.len);</span>
<span class="line" id="L427"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">3</span>), h.index.count());</span>
<span class="line" id="L428"> <span class="tok-comment">// Capacity should still be the same since we shouldn't have needed to grow</span>
</span>
<span class="line" id="L429"> <span class="tok-comment">// when adding back the same fields</span>
</span>
<span class="line" id="L430"> <span class="tok-kw">try</span> testing.expectEqual(list_capacity, h.list.capacity);</span>
<span class="line" id="L431"> <span class="tok-kw">try</span> testing.expectEqual(index_capacity, h.index.capacity());</span>
<span class="line" id="L432"></span>
<span class="line" id="L433"> h.clearAndFree();</span>
<span class="line" id="L434"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">0</span>), h.list.items.len);</span>
<span class="line" id="L435"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">0</span>), h.index.count());</span>
<span class="line" id="L436"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">0</span>), h.list.capacity);</span>
<span class="line" id="L437"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">0</span>), h.index.capacity());</span>
<span class="line" id="L438">}</span>
<span class="line" id="L439"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L4"></span>
<span class="line" id="L5"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> State = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L8"> <span class="tok-comment">/// Begin header parsing states.</span></span>
<span class="line" id="L9"> invalid,</span>
<span class="line" id="L10"> start,</span>
<span class="line" id="L11"> seen_n,</span>
<span class="line" id="L12"> seen_r,</span>
<span class="line" id="L13"> seen_rn,</span>
<span class="line" id="L14"> seen_rnr,</span>
<span class="line" id="L15"> finished,</span>
<span class="line" id="L16"> <span class="tok-comment">/// Begin transfer-encoding: chunked parsing states.</span></span>
<span class="line" id="L17"> chunk_head_size,</span>
<span class="line" id="L18"> chunk_head_ext,</span>
<span class="line" id="L19"> chunk_head_r,</span>
<span class="line" id="L20"> chunk_data,</span>
<span class="line" id="L21"> chunk_data_suffix,</span>
<span class="line" id="L22"> chunk_data_suffix_r,</span>
<span class="line" id="L23"></span>
<span class="line" id="L24"> <span class="tok-comment">/// Returns true if the parser is in a content state (ie. not waiting for more headers).</span></span>
<span class="line" id="L25"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isContent</span>(self: State) <span class="tok-type">bool</span> {</span>
<span class="line" id="L26"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (self) {</span>
<span class="line" id="L27"> .invalid, .start, .seen_n, .seen_r, .seen_rn, .seen_rnr => <span class="tok-null">false</span>,</span>
<span class="line" id="L28"> .finished, .chunk_head_size, .chunk_head_ext, .chunk_head_r, .chunk_data, .chunk_data_suffix, .chunk_data_suffix_r => <span class="tok-null">true</span>,</span>
<span class="line" id="L29"> };</span>
<span class="line" id="L30"> }</span>
<span class="line" id="L31">};</span>
<span class="line" id="L32"></span>
<span class="line" id="L33"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> HeadersParser = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L34"> state: State = .start,</span>
<span class="line" id="L35"> <span class="tok-comment">/// Whether or not `header_bytes` is allocated or was provided as a fixed buffer.</span></span>
<span class="line" id="L36"> header_bytes_owned: <span class="tok-type">bool</span>,</span>
<span class="line" id="L37"> <span class="tok-comment">/// Either a fixed buffer of len `max_header_bytes` or a dynamic buffer that can grow up to `max_header_bytes`.</span></span>
<span class="line" id="L38"> <span class="tok-comment">/// Pointers into this buffer are not stable until after a message is complete.</span></span>
<span class="line" id="L39"> header_bytes: std.ArrayListUnmanaged(<span class="tok-type">u8</span>),</span>
<span class="line" id="L40"> <span class="tok-comment">/// The maximum allowed size of `header_bytes`.</span></span>
<span class="line" id="L41"> max_header_bytes: <span class="tok-type">usize</span>,</span>
<span class="line" id="L42"> next_chunk_length: <span class="tok-type">u64</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L43"> <span class="tok-comment">/// Whether this parser is done parsing a complete message.</span></span>
<span class="line" id="L44"> <span class="tok-comment">/// A message is only done when the entire payload has been read.</span></span>
<span class="line" id="L45"> done: <span class="tok-type">bool</span> = <span class="tok-null">false</span>,</span>
<span class="line" id="L46"></span>
<span class="line" id="L47"> <span class="tok-comment">/// Initializes the parser with a dynamically growing header buffer of up to `max` bytes.</span></span>
<span class="line" id="L48"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">initDynamic</span>(max: <span class="tok-type">usize</span>) HeadersParser {</span>
<span class="line" id="L49"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L50"> .header_bytes = .{},</span>
<span class="line" id="L51"> .max_header_bytes = max,</span>
<span class="line" id="L52"> .header_bytes_owned = <span class="tok-null">true</span>,</span>
<span class="line" id="L53"> };</span>
<span class="line" id="L54"> }</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"> <span class="tok-comment">/// Initializes the parser with a provided buffer `buf`.</span></span>
<span class="line" id="L57"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">initStatic</span>(buf: []<span class="tok-type">u8</span>) HeadersParser {</span>
<span class="line" id="L58"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L59"> .header_bytes = .{ .items = buf[<span class="tok-number">0</span>..<span class="tok-number">0</span>], .capacity = buf.len },</span>
<span class="line" id="L60"> .max_header_bytes = buf.len,</span>
<span class="line" id="L61"> .header_bytes_owned = <span class="tok-null">false</span>,</span>
<span class="line" id="L62"> };</span>
<span class="line" id="L63"> }</span>
<span class="line" id="L64"></span>
<span class="line" id="L65"> <span class="tok-comment">/// Completely resets the parser to it's initial state.</span></span>
<span class="line" id="L66"> <span class="tok-comment">/// This must be called after a message is complete.</span></span>
<span class="line" id="L67"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reset</span>(r: *HeadersParser) <span class="tok-type">void</span> {</span>
<span class="line" id="L68"> assert(r.done); <span class="tok-comment">// The message must be completely read before reset, otherwise the parser is in an invalid state.</span>
</span>
<span class="line" id="L69"></span>
<span class="line" id="L70"> r.header_bytes.clearRetainingCapacity();</span>
<span class="line" id="L71"></span>
<span class="line" id="L72"> r.* = .{</span>
<span class="line" id="L73"> .header_bytes = r.header_bytes,</span>
<span class="line" id="L74"> .max_header_bytes = r.max_header_bytes,</span>
<span class="line" id="L75"> .header_bytes_owned = r.header_bytes_owned,</span>
<span class="line" id="L76"> };</span>
<span class="line" id="L77"> }</span>
<span class="line" id="L78"></span>
<span class="line" id="L79"> <span class="tok-comment">/// Returns the number of bytes consumed by headers. This is always less than or equal to `bytes.len`.</span></span>
<span class="line" id="L80"> <span class="tok-comment">/// You should check `r.state.isContent()` after this to check if the headers are done.</span></span>
<span class="line" id="L81"> <span class="tok-comment">///</span></span>
<span class="line" id="L82"> <span class="tok-comment">/// If the amount returned is less than `bytes.len`, you may assume that the parser is in a content state and the</span></span>
<span class="line" id="L83"> <span class="tok-comment">/// first byte of content is located at `bytes[result]`.</span></span>
<span class="line" id="L84"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">findHeadersEnd</span>(r: *HeadersParser, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L85"> <span class="tok-kw">const</span> vector_len: <span class="tok-type">comptime_int</span> = <span class="tok-kw">comptime</span> <span class="tok-builtin">@max</span>(std.simd.suggestVectorSize(<span class="tok-type">u8</span>) <span class="tok-kw">orelse</span> <span class="tok-number">1</span>, <span class="tok-number">8</span>);</span>
<span class="line" id="L86"> <span class="tok-kw">const</span> len = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(bytes.len));</span>
<span class="line" id="L87"> <span class="tok-kw">var</span> index: <span class="tok-type">u32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L88"></span>
<span class="line" id="L89"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L90"> <span class="tok-kw">switch</span> (r.state) {</span>
<span class="line" id="L91"> .invalid => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L92"> .finished => <span class="tok-kw">return</span> index,</span>
<span class="line" id="L93"> .start => <span class="tok-kw">switch</span> (len - index) {</span>
<span class="line" id="L94"> <span class="tok-number">0</span> => <span class="tok-kw">return</span> index,</span>
<span class="line" id="L95"> <span class="tok-number">1</span> => {</span>
<span class="line" id="L96"> <span class="tok-kw">switch</span> (bytes[index]) {</span>
<span class="line" id="L97"> <span class="tok-str">'\r'</span> => r.state = .seen_r,</span>
<span class="line" id="L98"> <span class="tok-str">'\n'</span> => r.state = .seen_n,</span>
<span class="line" id="L99"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L100"> }</span>
<span class="line" id="L101"></span>
<span class="line" id="L102"> <span class="tok-kw">return</span> index + <span class="tok-number">1</span>;</span>
<span class="line" id="L103"> },</span>
<span class="line" id="L104"> <span class="tok-number">2</span> => {</span>
<span class="line" id="L105"> <span class="tok-kw">const</span> b16 = int16(bytes[index..][<span class="tok-number">0</span>..<span class="tok-number">2</span>]);</span>
<span class="line" id="L106"> <span class="tok-kw">const</span> b8 = intShift(<span class="tok-type">u8</span>, b16);</span>
<span class="line" id="L107"></span>
<span class="line" id="L108"> <span class="tok-kw">switch</span> (b8) {</span>
<span class="line" id="L109"> <span class="tok-str">'\r'</span> => r.state = .seen_r,</span>
<span class="line" id="L110"> <span class="tok-str">'\n'</span> => r.state = .seen_n,</span>
<span class="line" id="L111"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L112"> }</span>
<span class="line" id="L113"></span>
<span class="line" id="L114"> <span class="tok-kw">switch</span> (b16) {</span>
<span class="line" id="L115"> int16(<span class="tok-str">"\r\n"</span>) => r.state = .seen_rn,</span>
<span class="line" id="L116"> int16(<span class="tok-str">"\n\n"</span>) => r.state = .finished,</span>
<span class="line" id="L117"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L118"> }</span>
<span class="line" id="L119"></span>
<span class="line" id="L120"> <span class="tok-kw">return</span> index + <span class="tok-number">2</span>;</span>
<span class="line" id="L121"> },</span>
<span class="line" id="L122"> <span class="tok-number">3</span> => {</span>
<span class="line" id="L123"> <span class="tok-kw">const</span> b24 = int24(bytes[index..][<span class="tok-number">0</span>..<span class="tok-number">3</span>]);</span>
<span class="line" id="L124"> <span class="tok-kw">const</span> b16 = intShift(<span class="tok-type">u16</span>, b24);</span>
<span class="line" id="L125"> <span class="tok-kw">const</span> b8 = intShift(<span class="tok-type">u8</span>, b24);</span>
<span class="line" id="L126"></span>
<span class="line" id="L127"> <span class="tok-kw">switch</span> (b8) {</span>
<span class="line" id="L128"> <span class="tok-str">'\r'</span> => r.state = .seen_r,</span>
<span class="line" id="L129"> <span class="tok-str">'\n'</span> => r.state = .seen_n,</span>
<span class="line" id="L130"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L131"> }</span>
<span class="line" id="L132"></span>
<span class="line" id="L133"> <span class="tok-kw">switch</span> (b16) {</span>
<span class="line" id="L134"> int16(<span class="tok-str">"\r\n"</span>) => r.state = .seen_rn,</span>
<span class="line" id="L135"> int16(<span class="tok-str">"\n\n"</span>) => r.state = .finished,</span>
<span class="line" id="L136"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L137"> }</span>
<span class="line" id="L138"></span>
<span class="line" id="L139"> <span class="tok-kw">switch</span> (b24) {</span>
<span class="line" id="L140"> int24(<span class="tok-str">"\r\n\r"</span>) => r.state = .seen_rnr,</span>
<span class="line" id="L141"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L142"> }</span>
<span class="line" id="L143"></span>
<span class="line" id="L144"> <span class="tok-kw">return</span> index + <span class="tok-number">3</span>;</span>
<span class="line" id="L145"> },</span>
<span class="line" id="L146"> <span class="tok-number">4</span>...vector_len - <span class="tok-number">1</span> => {</span>
<span class="line" id="L147"> <span class="tok-kw">const</span> b32 = int32(bytes[index..][<span class="tok-number">0</span>..<span class="tok-number">4</span>]);</span>
<span class="line" id="L148"> <span class="tok-kw">const</span> b24 = intShift(<span class="tok-type">u24</span>, b32);</span>
<span class="line" id="L149"> <span class="tok-kw">const</span> b16 = intShift(<span class="tok-type">u16</span>, b32);</span>
<span class="line" id="L150"> <span class="tok-kw">const</span> b8 = intShift(<span class="tok-type">u8</span>, b32);</span>
<span class="line" id="L151"></span>
<span class="line" id="L152"> <span class="tok-kw">switch</span> (b8) {</span>
<span class="line" id="L153"> <span class="tok-str">'\r'</span> => r.state = .seen_r,</span>
<span class="line" id="L154"> <span class="tok-str">'\n'</span> => r.state = .seen_n,</span>
<span class="line" id="L155"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L156"> }</span>
<span class="line" id="L157"></span>
<span class="line" id="L158"> <span class="tok-kw">switch</span> (b16) {</span>
<span class="line" id="L159"> int16(<span class="tok-str">"\r\n"</span>) => r.state = .seen_rn,</span>
<span class="line" id="L160"> int16(<span class="tok-str">"\n\n"</span>) => r.state = .finished,</span>
<span class="line" id="L161"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L162"> }</span>
<span class="line" id="L163"></span>
<span class="line" id="L164"> <span class="tok-kw">switch</span> (b24) {</span>
<span class="line" id="L165"> int24(<span class="tok-str">"\r\n\r"</span>) => r.state = .seen_rnr,</span>
<span class="line" id="L166"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L167"> }</span>
<span class="line" id="L168"></span>
<span class="line" id="L169"> <span class="tok-kw">switch</span> (b32) {</span>
<span class="line" id="L170"> int32(<span class="tok-str">"\r\n\r\n"</span>) => r.state = .finished,</span>
<span class="line" id="L171"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L172"> }</span>
<span class="line" id="L173"></span>
<span class="line" id="L174"> index += <span class="tok-number">4</span>;</span>
<span class="line" id="L175"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L176"> },</span>
<span class="line" id="L177"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L178"> <span class="tok-kw">const</span> Vector = <span class="tok-builtin">@Vector</span>(vector_len, <span class="tok-type">u8</span>);</span>
<span class="line" id="L179"> <span class="tok-comment">// const BoolVector = @Vector(vector_len, bool);</span>
</span>
<span class="line" id="L180"> <span class="tok-kw">const</span> BitVector = <span class="tok-builtin">@Vector</span>(vector_len, <span class="tok-type">u1</span>);</span>
<span class="line" id="L181"> <span class="tok-kw">const</span> SizeVector = <span class="tok-builtin">@Vector</span>(vector_len, <span class="tok-type">u8</span>);</span>
<span class="line" id="L182"></span>
<span class="line" id="L183"> <span class="tok-kw">const</span> chunk = bytes[index..][<span class="tok-number">0</span>..vector_len];</span>
<span class="line" id="L184"> <span class="tok-kw">const</span> v: Vector = chunk.*;</span>
<span class="line" id="L185"> <span class="tok-kw">const</span> matches_r = <span class="tok-builtin">@as</span>(BitVector, <span class="tok-builtin">@bitCast</span>(v == <span class="tok-builtin">@as</span>(Vector, <span class="tok-builtin">@splat</span>(<span class="tok-str">'\r'</span>))));</span>
<span class="line" id="L186"> <span class="tok-kw">const</span> matches_n = <span class="tok-builtin">@as</span>(BitVector, <span class="tok-builtin">@bitCast</span>(v == <span class="tok-builtin">@as</span>(Vector, <span class="tok-builtin">@splat</span>(<span class="tok-str">'\n'</span>))));</span>
<span class="line" id="L187"> <span class="tok-kw">const</span> matches_or: SizeVector = matches_r | matches_n;</span>
<span class="line" id="L188"></span>
<span class="line" id="L189"> <span class="tok-kw">const</span> matches = <span class="tok-builtin">@reduce</span>(.Add, matches_or);</span>
<span class="line" id="L190"> <span class="tok-kw">switch</span> (matches) {</span>
<span class="line" id="L191"> <span class="tok-number">0</span> => {},</span>
<span class="line" id="L192"> <span class="tok-number">1</span> => <span class="tok-kw">switch</span> (chunk[vector_len - <span class="tok-number">1</span>]) {</span>
<span class="line" id="L193"> <span class="tok-str">'\r'</span> => r.state = .seen_r,</span>
<span class="line" id="L194"> <span class="tok-str">'\n'</span> => r.state = .seen_n,</span>
<span class="line" id="L195"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L196"> },</span>
<span class="line" id="L197"> <span class="tok-number">2</span> => {</span>
<span class="line" id="L198"> <span class="tok-kw">const</span> b16 = int16(chunk[vector_len - <span class="tok-number">2</span> ..][<span class="tok-number">0</span>..<span class="tok-number">2</span>]);</span>
<span class="line" id="L199"> <span class="tok-kw">const</span> b8 = intShift(<span class="tok-type">u8</span>, b16);</span>
<span class="line" id="L200"></span>
<span class="line" id="L201"> <span class="tok-kw">switch</span> (b8) {</span>
<span class="line" id="L202"> <span class="tok-str">'\r'</span> => r.state = .seen_r,</span>
<span class="line" id="L203"> <span class="tok-str">'\n'</span> => r.state = .seen_n,</span>
<span class="line" id="L204"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L205"> }</span>
<span class="line" id="L206"></span>
<span class="line" id="L207"> <span class="tok-kw">switch</span> (b16) {</span>
<span class="line" id="L208"> int16(<span class="tok-str">"\r\n"</span>) => r.state = .seen_rn,</span>
<span class="line" id="L209"> int16(<span class="tok-str">"\n\n"</span>) => r.state = .finished,</span>
<span class="line" id="L210"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L211"> }</span>
<span class="line" id="L212"> },</span>
<span class="line" id="L213"> <span class="tok-number">3</span> => {</span>
<span class="line" id="L214"> <span class="tok-kw">const</span> b24 = int24(chunk[vector_len - <span class="tok-number">3</span> ..][<span class="tok-number">0</span>..<span class="tok-number">3</span>]);</span>
<span class="line" id="L215"> <span class="tok-kw">const</span> b16 = intShift(<span class="tok-type">u16</span>, b24);</span>
<span class="line" id="L216"> <span class="tok-kw">const</span> b8 = intShift(<span class="tok-type">u8</span>, b24);</span>
<span class="line" id="L217"></span>
<span class="line" id="L218"> <span class="tok-kw">switch</span> (b8) {</span>
<span class="line" id="L219"> <span class="tok-str">'\r'</span> => r.state = .seen_r,</span>
<span class="line" id="L220"> <span class="tok-str">'\n'</span> => r.state = .seen_n,</span>
<span class="line" id="L221"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L222"> }</span>
<span class="line" id="L223"></span>
<span class="line" id="L224"> <span class="tok-kw">switch</span> (b16) {</span>
<span class="line" id="L225"> int16(<span class="tok-str">"\r\n"</span>) => r.state = .seen_rn,</span>
<span class="line" id="L226"> int16(<span class="tok-str">"\n\n"</span>) => r.state = .finished,</span>
<span class="line" id="L227"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L228"> }</span>
<span class="line" id="L229"></span>
<span class="line" id="L230"> <span class="tok-kw">switch</span> (b24) {</span>
<span class="line" id="L231"> int24(<span class="tok-str">"\r\n\r"</span>) => r.state = .seen_rnr,</span>
<span class="line" id="L232"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L233"> }</span>
<span class="line" id="L234"> },</span>
<span class="line" id="L235"> <span class="tok-number">4</span>...vector_len => {</span>
<span class="line" id="L236"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..vector_len - <span class="tok-number">3</span>) |i_usize| {</span>
<span class="line" id="L237"> <span class="tok-kw">const</span> i = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>(i_usize));</span>
<span class="line" id="L238"></span>
<span class="line" id="L239"> <span class="tok-kw">const</span> b32 = int32(chunk[i..][<span class="tok-number">0</span>..<span class="tok-number">4</span>]);</span>
<span class="line" id="L240"> <span class="tok-kw">const</span> b16 = intShift(<span class="tok-type">u16</span>, b32);</span>
<span class="line" id="L241"></span>
<span class="line" id="L242"> <span class="tok-kw">if</span> (b32 == int32(<span class="tok-str">"\r\n\r\n"</span>)) {</span>
<span class="line" id="L243"> r.state = .finished;</span>
<span class="line" id="L244"> <span class="tok-kw">return</span> index + i + <span class="tok-number">4</span>;</span>
<span class="line" id="L245"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (b16 == int16(<span class="tok-str">"\n\n"</span>)) {</span>
<span class="line" id="L246"> r.state = .finished;</span>
<span class="line" id="L247"> <span class="tok-kw">return</span> index + i + <span class="tok-number">2</span>;</span>
<span class="line" id="L248"> }</span>
<span class="line" id="L249"> }</span>
<span class="line" id="L250"></span>
<span class="line" id="L251"> <span class="tok-kw">const</span> b24 = int24(chunk[vector_len - <span class="tok-number">3</span> ..][<span class="tok-number">0</span>..<span class="tok-number">3</span>]);</span>
<span class="line" id="L252"> <span class="tok-kw">const</span> b16 = intShift(<span class="tok-type">u16</span>, b24);</span>
<span class="line" id="L253"> <span class="tok-kw">const</span> b8 = intShift(<span class="tok-type">u8</span>, b24);</span>
<span class="line" id="L254"></span>
<span class="line" id="L255"> <span class="tok-kw">switch</span> (b8) {</span>
<span class="line" id="L256"> <span class="tok-str">'\r'</span> => r.state = .seen_r,</span>
<span class="line" id="L257"> <span class="tok-str">'\n'</span> => r.state = .seen_n,</span>
<span class="line" id="L258"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L259"> }</span>
<span class="line" id="L260"></span>
<span class="line" id="L261"> <span class="tok-kw">switch</span> (b16) {</span>
<span class="line" id="L262"> int16(<span class="tok-str">"\r\n"</span>) => r.state = .seen_rn,</span>
<span class="line" id="L263"> int16(<span class="tok-str">"\n\n"</span>) => r.state = .finished,</span>
<span class="line" id="L264"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L265"> }</span>
<span class="line" id="L266"></span>
<span class="line" id="L267"> <span class="tok-kw">switch</span> (b24) {</span>
<span class="line" id="L268"> int24(<span class="tok-str">"\r\n\r"</span>) => r.state = .seen_rnr,</span>
<span class="line" id="L269"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L270"> }</span>
<span class="line" id="L271"> },</span>
<span class="line" id="L272"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L273"> }</span>
<span class="line" id="L274"></span>
<span class="line" id="L275"> index += vector_len;</span>
<span class="line" id="L276"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L277"> },</span>
<span class="line" id="L278"> },</span>
<span class="line" id="L279"> .seen_n => <span class="tok-kw">switch</span> (len - index) {</span>
<span class="line" id="L280"> <span class="tok-number">0</span> => <span class="tok-kw">return</span> index,</span>
<span class="line" id="L281"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L282"> <span class="tok-kw">switch</span> (bytes[index]) {</span>
<span class="line" id="L283"> <span class="tok-str">'\n'</span> => r.state = .finished,</span>
<span class="line" id="L284"> <span class="tok-kw">else</span> => r.state = .start,</span>
<span class="line" id="L285"> }</span>
<span class="line" id="L286"></span>
<span class="line" id="L287"> index += <span class="tok-number">1</span>;</span>
<span class="line" id="L288"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L289"> },</span>
<span class="line" id="L290"> },</span>
<span class="line" id="L291"> .seen_r => <span class="tok-kw">switch</span> (len - index) {</span>
<span class="line" id="L292"> <span class="tok-number">0</span> => <span class="tok-kw">return</span> index,</span>
<span class="line" id="L293"> <span class="tok-number">1</span> => {</span>
<span class="line" id="L294"> <span class="tok-kw">switch</span> (bytes[index]) {</span>
<span class="line" id="L295"> <span class="tok-str">'\n'</span> => r.state = .seen_rn,</span>
<span class="line" id="L296"> <span class="tok-str">'\r'</span> => r.state = .seen_r,</span>
<span class="line" id="L297"> <span class="tok-kw">else</span> => r.state = .start,</span>
<span class="line" id="L298"> }</span>
<span class="line" id="L299"></span>
<span class="line" id="L300"> <span class="tok-kw">return</span> index + <span class="tok-number">1</span>;</span>
<span class="line" id="L301"> },</span>
<span class="line" id="L302"> <span class="tok-number">2</span> => {</span>
<span class="line" id="L303"> <span class="tok-kw">const</span> b16 = int16(bytes[index..][<span class="tok-number">0</span>..<span class="tok-number">2</span>]);</span>
<span class="line" id="L304"> <span class="tok-kw">const</span> b8 = intShift(<span class="tok-type">u8</span>, b16);</span>
<span class="line" id="L305"></span>
<span class="line" id="L306"> <span class="tok-kw">switch</span> (b8) {</span>
<span class="line" id="L307"> <span class="tok-str">'\r'</span> => r.state = .seen_r,</span>
<span class="line" id="L308"> <span class="tok-str">'\n'</span> => r.state = .seen_rn,</span>
<span class="line" id="L309"> <span class="tok-kw">else</span> => r.state = .start,</span>
<span class="line" id="L310"> }</span>
<span class="line" id="L311"></span>
<span class="line" id="L312"> <span class="tok-kw">switch</span> (b16) {</span>
<span class="line" id="L313"> int16(<span class="tok-str">"\r\n"</span>) => r.state = .seen_rn,</span>
<span class="line" id="L314"> int16(<span class="tok-str">"\n\r"</span>) => r.state = .seen_rnr,</span>
<span class="line" id="L315"> int16(<span class="tok-str">"\n\n"</span>) => r.state = .finished,</span>
<span class="line" id="L316"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L317"> }</span>
<span class="line" id="L318"></span>
<span class="line" id="L319"> <span class="tok-kw">return</span> index + <span class="tok-number">2</span>;</span>
<span class="line" id="L320"> },</span>
<span class="line" id="L321"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L322"> <span class="tok-kw">const</span> b24 = int24(bytes[index..][<span class="tok-number">0</span>..<span class="tok-number">3</span>]);</span>
<span class="line" id="L323"> <span class="tok-kw">const</span> b16 = intShift(<span class="tok-type">u16</span>, b24);</span>
<span class="line" id="L324"> <span class="tok-kw">const</span> b8 = intShift(<span class="tok-type">u8</span>, b24);</span>
<span class="line" id="L325"></span>
<span class="line" id="L326"> <span class="tok-kw">switch</span> (b8) {</span>
<span class="line" id="L327"> <span class="tok-str">'\r'</span> => r.state = .seen_r,</span>
<span class="line" id="L328"> <span class="tok-str">'\n'</span> => r.state = .seen_n,</span>
<span class="line" id="L329"> <span class="tok-kw">else</span> => r.state = .start,</span>
<span class="line" id="L330"> }</span>
<span class="line" id="L331"></span>
<span class="line" id="L332"> <span class="tok-kw">switch</span> (b16) {</span>
<span class="line" id="L333"> int16(<span class="tok-str">"\r\n"</span>) => r.state = .seen_rn,</span>
<span class="line" id="L334"> int16(<span class="tok-str">"\n\n"</span>) => r.state = .finished,</span>
<span class="line" id="L335"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L336"> }</span>
<span class="line" id="L337"></span>
<span class="line" id="L338"> <span class="tok-kw">switch</span> (b24) {</span>
<span class="line" id="L339"> int24(<span class="tok-str">"\n\r\n"</span>) => r.state = .finished,</span>
<span class="line" id="L340"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L341"> }</span>
<span class="line" id="L342"></span>
<span class="line" id="L343"> index += <span class="tok-number">3</span>;</span>
<span class="line" id="L344"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L345"> },</span>
<span class="line" id="L346"> },</span>
<span class="line" id="L347"> .seen_rn => <span class="tok-kw">switch</span> (len - index) {</span>
<span class="line" id="L348"> <span class="tok-number">0</span> => <span class="tok-kw">return</span> index,</span>
<span class="line" id="L349"> <span class="tok-number">1</span> => {</span>
<span class="line" id="L350"> <span class="tok-kw">switch</span> (bytes[index]) {</span>
<span class="line" id="L351"> <span class="tok-str">'\r'</span> => r.state = .seen_rnr,</span>
<span class="line" id="L352"> <span class="tok-str">'\n'</span> => r.state = .seen_n,</span>
<span class="line" id="L353"> <span class="tok-kw">else</span> => r.state = .start,</span>
<span class="line" id="L354"> }</span>
<span class="line" id="L355"></span>
<span class="line" id="L356"> <span class="tok-kw">return</span> index + <span class="tok-number">1</span>;</span>
<span class="line" id="L357"> },</span>
<span class="line" id="L358"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L359"> <span class="tok-kw">const</span> b16 = int16(bytes[index..][<span class="tok-number">0</span>..<span class="tok-number">2</span>]);</span>
<span class="line" id="L360"> <span class="tok-kw">const</span> b8 = intShift(<span class="tok-type">u8</span>, b16);</span>
<span class="line" id="L361"></span>
<span class="line" id="L362"> <span class="tok-kw">switch</span> (b8) {</span>
<span class="line" id="L363"> <span class="tok-str">'\r'</span> => r.state = .seen_rnr,</span>
<span class="line" id="L364"> <span class="tok-str">'\n'</span> => r.state = .seen_n,</span>
<span class="line" id="L365"> <span class="tok-kw">else</span> => r.state = .start,</span>
<span class="line" id="L366"> }</span>
<span class="line" id="L367"></span>
<span class="line" id="L368"> <span class="tok-kw">switch</span> (b16) {</span>
<span class="line" id="L369"> int16(<span class="tok-str">"\r\n"</span>) => r.state = .finished,</span>
<span class="line" id="L370"> int16(<span class="tok-str">"\n\n"</span>) => r.state = .finished,</span>
<span class="line" id="L371"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L372"> }</span>
<span class="line" id="L373"></span>
<span class="line" id="L374"> index += <span class="tok-number">2</span>;</span>
<span class="line" id="L375"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L376"> },</span>
<span class="line" id="L377"> },</span>
<span class="line" id="L378"> .seen_rnr => <span class="tok-kw">switch</span> (len - index) {</span>
<span class="line" id="L379"> <span class="tok-number">0</span> => <span class="tok-kw">return</span> index,</span>
<span class="line" id="L380"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L381"> <span class="tok-kw">switch</span> (bytes[index]) {</span>
<span class="line" id="L382"> <span class="tok-str">'\n'</span> => r.state = .finished,</span>
<span class="line" id="L383"> <span class="tok-kw">else</span> => r.state = .start,</span>
<span class="line" id="L384"> }</span>
<span class="line" id="L385"></span>
<span class="line" id="L386"> index += <span class="tok-number">1</span>;</span>
<span class="line" id="L387"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L388"> },</span>
<span class="line" id="L389"> },</span>
<span class="line" id="L390"> .chunk_head_size => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L391"> .chunk_head_ext => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L392"> .chunk_head_r => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L393"> .chunk_data => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L394"> .chunk_data_suffix => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L395"> .chunk_data_suffix_r => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L396"> }</span>
<span class="line" id="L397"></span>
<span class="line" id="L398"> <span class="tok-kw">return</span> index;</span>
<span class="line" id="L399"> }</span>
<span class="line" id="L400"> }</span>
<span class="line" id="L401"></span>
<span class="line" id="L402"> <span class="tok-comment">/// Returns the number of bytes consumed by the chunk size. This is always less than or equal to `bytes.len`.</span></span>
<span class="line" id="L403"> <span class="tok-comment">/// You should check `r.state == .chunk_data` after this to check if the chunk size has been fully parsed.</span></span>
<span class="line" id="L404"> <span class="tok-comment">///</span></span>
<span class="line" id="L405"> <span class="tok-comment">/// If the amount returned is less than `bytes.len`, you may assume that the parser is in the `chunk_data` state</span></span>
<span class="line" id="L406"> <span class="tok-comment">/// and that the first byte of the chunk is at `bytes[result]`.</span></span>
<span class="line" id="L407"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">findChunkedLen</span>(r: *HeadersParser, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L408"> <span class="tok-kw">const</span> len = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(bytes.len));</span>
<span class="line" id="L409"></span>
<span class="line" id="L410"> <span class="tok-kw">for</span> (bytes[<span class="tok-number">0</span>..], <span class="tok-number">0</span>..) |c, i| {</span>
<span class="line" id="L411"> <span class="tok-kw">const</span> index = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(i));</span>
<span class="line" id="L412"> <span class="tok-kw">switch</span> (r.state) {</span>
<span class="line" id="L413"> .chunk_data_suffix => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L414"> <span class="tok-str">'\r'</span> => r.state = .chunk_data_suffix_r,</span>
<span class="line" id="L415"> <span class="tok-str">'\n'</span> => r.state = .chunk_head_size,</span>
<span class="line" id="L416"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L417"> r.state = .invalid;</span>
<span class="line" id="L418"> <span class="tok-kw">return</span> index;</span>
<span class="line" id="L419"> },</span>
<span class="line" id="L420"> },</span>
<span class="line" id="L421"> .chunk_data_suffix_r => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L422"> <span class="tok-str">'\n'</span> => r.state = .chunk_head_size,</span>
<span class="line" id="L423"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L424"> r.state = .invalid;</span>
<span class="line" id="L425"> <span class="tok-kw">return</span> index;</span>
<span class="line" id="L426"> },</span>
<span class="line" id="L427"> },</span>
<span class="line" id="L428"> .chunk_head_size => {</span>
<span class="line" id="L429"> <span class="tok-kw">const</span> digit = <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L430"> <span class="tok-str">'0'</span>...<span class="tok-str">'9'</span> => |b| b - <span class="tok-str">'0'</span>,</span>
<span class="line" id="L431"> <span class="tok-str">'A'</span>...<span class="tok-str">'Z'</span> => |b| b - <span class="tok-str">'A'</span> + <span class="tok-number">10</span>,</span>
<span class="line" id="L432"> <span class="tok-str">'a'</span>...<span class="tok-str">'z'</span> => |b| b - <span class="tok-str">'a'</span> + <span class="tok-number">10</span>,</span>
<span class="line" id="L433"> <span class="tok-str">'\r'</span> => {</span>
<span class="line" id="L434"> r.state = .chunk_head_r;</span>
<span class="line" id="L435"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L436"> },</span>
<span class="line" id="L437"> <span class="tok-str">'\n'</span> => {</span>
<span class="line" id="L438"> r.state = .chunk_data;</span>
<span class="line" id="L439"> <span class="tok-kw">return</span> index + <span class="tok-number">1</span>;</span>
<span class="line" id="L440"> },</span>
<span class="line" id="L441"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L442"> r.state = .chunk_head_ext;</span>
<span class="line" id="L443"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L444"> },</span>
<span class="line" id="L445"> };</span>
<span class="line" id="L446"></span>
<span class="line" id="L447"> <span class="tok-kw">const</span> new_len = r.next_chunk_length *% <span class="tok-number">16</span> +% digit;</span>
<span class="line" id="L448"> <span class="tok-kw">if</span> (new_len <= r.next_chunk_length <span class="tok-kw">and</span> r.next_chunk_length != <span class="tok-number">0</span>) {</span>
<span class="line" id="L449"> r.state = .invalid;</span>
<span class="line" id="L450"> <span class="tok-kw">return</span> index;</span>
<span class="line" id="L451"> }</span>
<span class="line" id="L452"></span>
<span class="line" id="L453"> r.next_chunk_length = new_len;</span>
<span class="line" id="L454"> },</span>
<span class="line" id="L455"> .chunk_head_ext => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L456"> <span class="tok-str">'\r'</span> => r.state = .chunk_head_r,</span>
<span class="line" id="L457"> <span class="tok-str">'\n'</span> => {</span>
<span class="line" id="L458"> r.state = .chunk_data;</span>
<span class="line" id="L459"> <span class="tok-kw">return</span> index + <span class="tok-number">1</span>;</span>
<span class="line" id="L460"> },</span>
<span class="line" id="L461"> <span class="tok-kw">else</span> => <span class="tok-kw">continue</span>,</span>
<span class="line" id="L462"> },</span>
<span class="line" id="L463"> .chunk_head_r => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L464"> <span class="tok-str">'\n'</span> => {</span>
<span class="line" id="L465"> r.state = .chunk_data;</span>
<span class="line" id="L466"> <span class="tok-kw">return</span> index + <span class="tok-number">1</span>;</span>
<span class="line" id="L467"> },</span>
<span class="line" id="L468"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L469"> r.state = .invalid;</span>
<span class="line" id="L470"> <span class="tok-kw">return</span> index;</span>
<span class="line" id="L471"> },</span>
<span class="line" id="L472"> },</span>
<span class="line" id="L473"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L474"> }</span>
<span class="line" id="L475"> }</span>
<span class="line" id="L476"></span>
<span class="line" id="L477"> <span class="tok-kw">return</span> len;</span>
<span class="line" id="L478"> }</span>
<span class="line" id="L479"></span>
<span class="line" id="L480"> <span class="tok-comment">/// Returns whether or not the parser has finished parsing a complete message. A message is only complete after the</span></span>
<span class="line" id="L481"> <span class="tok-comment">/// entire body has been read and any trailing headers have been parsed.</span></span>
<span class="line" id="L482"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isComplete</span>(r: *HeadersParser) <span class="tok-type">bool</span> {</span>
<span class="line" id="L483"> <span class="tok-kw">return</span> r.done <span class="tok-kw">and</span> r.state == .finished;</span>
<span class="line" id="L484"> }</span>
<span class="line" id="L485"></span>
<span class="line" id="L486"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> CheckCompleteHeadError = mem.Allocator.Error || <span class="tok-kw">error</span>{HttpHeadersExceededSizeLimit};</span>
<span class="line" id="L487"></span>
<span class="line" id="L488"> <span class="tok-comment">/// Pushes `in` into the parser. Returns the number of bytes consumed by the header. Any header bytes are appended</span></span>
<span class="line" id="L489"> <span class="tok-comment">/// to the `header_bytes` buffer.</span></span>
<span class="line" id="L490"> <span class="tok-comment">///</span></span>
<span class="line" id="L491"> <span class="tok-comment">/// This function only uses `allocator` if `r.header_bytes_owned` is true, and may be undefined otherwise.</span></span>
<span class="line" id="L492"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">checkCompleteHead</span>(r: *HeadersParser, allocator: std.mem.Allocator, in: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) CheckCompleteHeadError!<span class="tok-type">u32</span> {</span>
<span class="line" id="L493"> <span class="tok-kw">if</span> (r.state.isContent()) <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L494"></span>
<span class="line" id="L495"> <span class="tok-kw">const</span> i = r.findHeadersEnd(in);</span>
<span class="line" id="L496"> <span class="tok-kw">const</span> data = in[<span class="tok-number">0</span>..i];</span>
<span class="line" id="L497"> <span class="tok-kw">if</span> (r.header_bytes.items.len + data.len > r.max_header_bytes) {</span>
<span class="line" id="L498"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpHeadersExceededSizeLimit;</span>
<span class="line" id="L499"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L500"> <span class="tok-kw">if</span> (r.header_bytes_owned) <span class="tok-kw">try</span> r.header_bytes.ensureUnusedCapacity(allocator, data.len);</span>
<span class="line" id="L501"></span>
<span class="line" id="L502"> r.header_bytes.appendSliceAssumeCapacity(data);</span>
<span class="line" id="L503"> }</span>
<span class="line" id="L504"></span>
<span class="line" id="L505"> <span class="tok-kw">return</span> i;</span>
<span class="line" id="L506"> }</span>
<span class="line" id="L507"></span>
<span class="line" id="L508"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ReadError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L509"> HttpChunkInvalid,</span>
<span class="line" id="L510"> };</span>
<span class="line" id="L511"></span>
<span class="line" id="L512"> <span class="tok-comment">/// Reads the body of the message into `buffer`. Returns the number of bytes placed in the buffer.</span></span>
<span class="line" id="L513"> <span class="tok-comment">///</span></span>
<span class="line" id="L514"> <span class="tok-comment">/// If `skip` is true, the buffer will be unused and the body will be skipped.</span></span>
<span class="line" id="L515"> <span class="tok-comment">///</span></span>
<span class="line" id="L516"> <span class="tok-comment">/// See `std.http.Client.BufferedConnection for an example of `conn`.</span></span>
<span class="line" id="L517"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">read</span>(r: *HeadersParser, conn: <span class="tok-kw">anytype</span>, buffer: []<span class="tok-type">u8</span>, skip: <span class="tok-type">bool</span>) !<span class="tok-type">usize</span> {</span>
<span class="line" id="L518"> assert(r.state.isContent());</span>
<span class="line" id="L519"> <span class="tok-kw">if</span> (r.done) <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L520"></span>
<span class="line" id="L521"> <span class="tok-kw">var</span> out_index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L522"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L523"> <span class="tok-kw">switch</span> (r.state) {</span>
<span class="line" id="L524"> .invalid, .start, .seen_n, .seen_r, .seen_rn, .seen_rnr => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L525"> .finished => {</span>
<span class="line" id="L526"> <span class="tok-kw">const</span> data_avail = r.next_chunk_length;</span>
<span class="line" id="L527"></span>
<span class="line" id="L528"> <span class="tok-kw">if</span> (skip) {</span>
<span class="line" id="L529"> <span class="tok-kw">try</span> conn.fill();</span>
<span class="line" id="L530"></span>
<span class="line" id="L531"> <span class="tok-kw">const</span> nread = <span class="tok-builtin">@min</span>(conn.peek().len, data_avail);</span>
<span class="line" id="L532"> conn.drop(<span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(nread)));</span>
<span class="line" id="L533"> r.next_chunk_length -= nread;</span>
<span class="line" id="L534"></span>
<span class="line" id="L535"> <span class="tok-kw">if</span> (r.next_chunk_length == <span class="tok-number">0</span>) r.done = <span class="tok-null">true</span>;</span>
<span class="line" id="L536"></span>
<span class="line" id="L537"> <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L538"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L539"> <span class="tok-kw">const</span> out_avail = buffer.len;</span>
<span class="line" id="L540"></span>
<span class="line" id="L541"> <span class="tok-kw">const</span> can_read = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(<span class="tok-builtin">@min</span>(data_avail, out_avail)));</span>
<span class="line" id="L542"> <span class="tok-kw">const</span> nread = <span class="tok-kw">try</span> conn.read(buffer[<span class="tok-number">0</span>..can_read]);</span>
<span class="line" id="L543"> r.next_chunk_length -= nread;</span>
<span class="line" id="L544"></span>
<span class="line" id="L545"> <span class="tok-kw">if</span> (r.next_chunk_length == <span class="tok-number">0</span>) r.done = <span class="tok-null">true</span>;</span>
<span class="line" id="L546"></span>
<span class="line" id="L547"> <span class="tok-kw">return</span> nread;</span>
<span class="line" id="L548"> }</span>
<span class="line" id="L549"> },</span>
<span class="line" id="L550"> .chunk_data_suffix, .chunk_data_suffix_r, .chunk_head_size, .chunk_head_ext, .chunk_head_r => {</span>
<span class="line" id="L551"> <span class="tok-kw">try</span> conn.fill();</span>
<span class="line" id="L552"></span>
<span class="line" id="L553"> <span class="tok-kw">const</span> i = r.findChunkedLen(conn.peek());</span>
<span class="line" id="L554"> conn.drop(<span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(i)));</span>
<span class="line" id="L555"></span>
<span class="line" id="L556"> <span class="tok-kw">switch</span> (r.state) {</span>
<span class="line" id="L557"> .invalid => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.HttpChunkInvalid,</span>
<span class="line" id="L558"> .chunk_data => <span class="tok-kw">if</span> (r.next_chunk_length == <span class="tok-number">0</span>) {</span>
<span class="line" id="L559"> <span class="tok-kw">if</span> (std.mem.eql(<span class="tok-type">u8</span>, conn.peek(), <span class="tok-str">"\r\n"</span>)) {</span>
<span class="line" id="L560"> r.state = .finished;</span>
<span class="line" id="L561"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L562"> <span class="tok-comment">// The trailer section is formatted identically to the header section.</span>
</span>
<span class="line" id="L563"> r.state = .seen_rn;</span>
<span class="line" id="L564"> }</span>
<span class="line" id="L565"> r.done = <span class="tok-null">true</span>;</span>
<span class="line" id="L566"></span>
<span class="line" id="L567"> <span class="tok-kw">return</span> out_index;</span>
<span class="line" id="L568"> },</span>
<span class="line" id="L569"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> out_index,</span>
<span class="line" id="L570"> }</span>
<span class="line" id="L571"></span>
<span class="line" id="L572"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L573"> },</span>
<span class="line" id="L574"> .chunk_data => {</span>
<span class="line" id="L575"> <span class="tok-kw">const</span> data_avail = r.next_chunk_length;</span>
<span class="line" id="L576"> <span class="tok-kw">const</span> out_avail = buffer.len - out_index;</span>
<span class="line" id="L577"></span>
<span class="line" id="L578"> <span class="tok-kw">if</span> (skip) {</span>
<span class="line" id="L579"> <span class="tok-kw">try</span> conn.fill();</span>
<span class="line" id="L580"></span>
<span class="line" id="L581"> <span class="tok-kw">const</span> nread = <span class="tok-builtin">@min</span>(conn.peek().len, data_avail);</span>
<span class="line" id="L582"> conn.drop(<span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(nread)));</span>
<span class="line" id="L583"> r.next_chunk_length -= nread;</span>
<span class="line" id="L584"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (out_avail > <span class="tok-number">0</span>) {</span>
<span class="line" id="L585"> <span class="tok-kw">const</span> can_read: <span class="tok-type">usize</span> = <span class="tok-builtin">@intCast</span>(<span class="tok-builtin">@min</span>(data_avail, out_avail));</span>
<span class="line" id="L586"> <span class="tok-kw">const</span> nread = <span class="tok-kw">try</span> conn.read(buffer[out_index..][<span class="tok-number">0</span>..can_read]);</span>
<span class="line" id="L587"> r.next_chunk_length -= nread;</span>
<span class="line" id="L588"> out_index += nread;</span>
<span class="line" id="L589"> }</span>
<span class="line" id="L590"></span>
<span class="line" id="L591"> <span class="tok-kw">if</span> (r.next_chunk_length == <span class="tok-number">0</span>) {</span>
<span class="line" id="L592"> r.state = .chunk_data_suffix;</span>
<span class="line" id="L593"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L594"> }</span>
<span class="line" id="L595"></span>
<span class="line" id="L596"> <span class="tok-kw">return</span> out_index;</span>
<span class="line" id="L597"> },</span>
<span class="line" id="L598"> }</span>
<span class="line" id="L599"> }</span>
<span class="line" id="L600"> }</span>
<span class="line" id="L601">};</span>
<span class="line" id="L602"></span>
<span class="line" id="L603"><span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">int16</span>(array: *<span class="tok-kw">const</span> [<span class="tok-number">2</span>]<span class="tok-type">u8</span>) <span class="tok-type">u16</span> {</span>
<span class="line" id="L604"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@bitCast</span>(array.*));</span>
<span class="line" id="L605">}</span>
<span class="line" id="L606"></span>
<span class="line" id="L607"><span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">int24</span>(array: *<span class="tok-kw">const</span> [<span class="tok-number">3</span>]<span class="tok-type">u8</span>) <span class="tok-type">u24</span> {</span>
<span class="line" id="L608"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">u24</span>, <span class="tok-builtin">@bitCast</span>(array.*));</span>
<span class="line" id="L609">}</span>
<span class="line" id="L610"></span>
<span class="line" id="L611"><span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">int32</span>(array: *<span class="tok-kw">const</span> [<span class="tok-number">4</span>]<span class="tok-type">u8</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L612"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@bitCast</span>(array.*));</span>
<span class="line" id="L613">}</span>
<span class="line" id="L614"></span>
<span class="line" id="L615"><span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">intShift</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, x: <span class="tok-kw">anytype</span>) T {</span>
<span class="line" id="L616"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>).cpu.arch.endian()) {</span>
<span class="line" id="L617"> .Little => <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(T, <span class="tok-builtin">@truncate</span>(x >> (<span class="tok-builtin">@bitSizeOf</span>(<span class="tok-builtin">@TypeOf</span>(x)) - <span class="tok-builtin">@bitSizeOf</span>(T)))),</span>
<span class="line" id="L618"> .Big => <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(T, <span class="tok-builtin">@truncate</span>(x)),</span>
<span class="line" id="L619"> }</span>
<span class="line" id="L620">}</span>
<span class="line" id="L621"></span>
<span class="line" id="L622"><span class="tok-comment">/// A buffered (and peekable) Connection.</span></span>
<span class="line" id="L623"><span class="tok-kw">const</span> MockBufferedConnection = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L624"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> buffer_size = <span class="tok-number">0x2000</span>;</span>
<span class="line" id="L625"></span>
<span class="line" id="L626"> conn: std.io.FixedBufferStream([]<span class="tok-kw">const</span> <span class="tok-type">u8</span>),</span>
<span class="line" id="L627"> buf: [buffer_size]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L628"> start: <span class="tok-type">u16</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L629"> end: <span class="tok-type">u16</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L630"></span>
<span class="line" id="L631"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fill</span>(conn: *MockBufferedConnection) ReadError!<span class="tok-type">void</span> {</span>
<span class="line" id="L632"> <span class="tok-kw">if</span> (conn.end != conn.start) <span class="tok-kw">return</span>;</span>
<span class="line" id="L633"></span>
<span class="line" id="L634"> <span class="tok-kw">const</span> nread = <span class="tok-kw">try</span> conn.conn.read(conn.buf[<span class="tok-number">0</span>..]);</span>
<span class="line" id="L635"> <span class="tok-kw">if</span> (nread == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.EndOfStream;</span>
<span class="line" id="L636"> conn.start = <span class="tok-number">0</span>;</span>
<span class="line" id="L637"> conn.end = <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@truncate</span>(nread));</span>
<span class="line" id="L638"> }</span>
<span class="line" id="L639"></span>
<span class="line" id="L640"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">peek</span>(conn: *MockBufferedConnection) []<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L641"> <span class="tok-kw">return</span> conn.buf[conn.start..conn.end];</span>
<span class="line" id="L642"> }</span>
<span class="line" id="L643"></span>
<span class="line" id="L644"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">drop</span>(conn: *MockBufferedConnection, num: <span class="tok-type">u16</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L645"> conn.start += num;</span>
<span class="line" id="L646"> }</span>
<span class="line" id="L647"></span>
<span class="line" id="L648"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">readAtLeast</span>(conn: *MockBufferedConnection, buffer: []<span class="tok-type">u8</span>, len: <span class="tok-type">usize</span>) ReadError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L649"> <span class="tok-kw">var</span> out_index: <span class="tok-type">u16</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L650"> <span class="tok-kw">while</span> (out_index < len) {</span>
<span class="line" id="L651"> <span class="tok-kw">const</span> available = conn.end - conn.start;</span>
<span class="line" id="L652"> <span class="tok-kw">const</span> left = buffer.len - out_index;</span>
<span class="line" id="L653"></span>
<span class="line" id="L654"> <span class="tok-kw">if</span> (available > <span class="tok-number">0</span>) {</span>
<span class="line" id="L655"> <span class="tok-kw">const</span> can_read = <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@truncate</span>(<span class="tok-builtin">@min</span>(available, left)));</span>
<span class="line" id="L656"></span>
<span class="line" id="L657"> <span class="tok-builtin">@memcpy</span>(buffer[out_index..][<span class="tok-number">0</span>..can_read], conn.buf[conn.start..][<span class="tok-number">0</span>..can_read]);</span>
<span class="line" id="L658"> out_index += can_read;</span>
<span class="line" id="L659"> conn.start += can_read;</span>
<span class="line" id="L660"></span>
<span class="line" id="L661"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L662"> }</span>
<span class="line" id="L663"></span>
<span class="line" id="L664"> <span class="tok-kw">if</span> (left > conn.buf.len) {</span>
<span class="line" id="L665"> <span class="tok-comment">// skip the buffer if the output is large enough</span>
</span>
<span class="line" id="L666"> <span class="tok-kw">return</span> conn.conn.read(buffer[out_index..]);</span>
<span class="line" id="L667"> }</span>
<span class="line" id="L668"></span>
<span class="line" id="L669"> <span class="tok-kw">try</span> conn.fill();</span>
<span class="line" id="L670"> }</span>
<span class="line" id="L671"></span>
<span class="line" id="L672"> <span class="tok-kw">return</span> out_index;</span>
<span class="line" id="L673"> }</span>
<span class="line" id="L674"></span>
<span class="line" id="L675"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">read</span>(conn: *MockBufferedConnection, buffer: []<span class="tok-type">u8</span>) ReadError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L676"> <span class="tok-kw">return</span> conn.readAtLeast(buffer, <span class="tok-number">1</span>);</span>
<span class="line" id="L677"> }</span>
<span class="line" id="L678"></span>
<span class="line" id="L679"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ReadError = std.io.FixedBufferStream([]<span class="tok-kw">const</span> <span class="tok-type">u8</span>).ReadError || <span class="tok-kw">error</span>{EndOfStream};</span>
<span class="line" id="L680"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Reader = std.io.Reader(*MockBufferedConnection, ReadError, read);</span>
<span class="line" id="L681"></span>
<span class="line" id="L682"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reader</span>(conn: *MockBufferedConnection) Reader {</span>
<span class="line" id="L683"> <span class="tok-kw">return</span> Reader{ .context = conn };</span>
<span class="line" id="L684"> }</span>
<span class="line" id="L685"></span>
<span class="line" id="L686"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">writeAll</span>(conn: *MockBufferedConnection, buffer: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) WriteError!<span class="tok-type">void</span> {</span>
<span class="line" id="L687"> <span class="tok-kw">return</span> conn.conn.writeAll(buffer);</span>
<span class="line" id="L688"> }</span>
<span class="line" id="L689"></span>
<span class="line" id="L690"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">write</span>(conn: *MockBufferedConnection, buffer: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) WriteError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L691"> <span class="tok-kw">return</span> conn.conn.write(buffer);</span>
<span class="line" id="L692"> }</span>
<span class="line" id="L693"></span>
<span class="line" id="L694"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> WriteError = std.io.FixedBufferStream([]<span class="tok-kw">const</span> <span class="tok-type">u8</span>).WriteError;</span>
<span class="line" id="L695"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Writer = std.io.Writer(*MockBufferedConnection, WriteError, write);</span>
<span class="line" id="L696"></span>
<span class="line" id="L697"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">writer</span>(conn: *MockBufferedConnection) Writer {</span>
<span class="line" id="L698"> <span class="tok-kw">return</span> Writer{ .context = conn };</span>
<span class="line" id="L699"> }</span>
<span class="line" id="L700">};</span>
<span class="line" id="L701"></span>
<span class="line" id="L702"><span class="tok-kw">test</span> <span class="tok-str">"HeadersParser.findHeadersEnd"</span> {</span>
<span class="line" id="L703"> <span class="tok-kw">var</span> r: HeadersParser = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L704"> <span class="tok-kw">const</span> data = <span class="tok-str">"GET / HTTP/1.1\r\nHost: localhost\r\n\r\nHello"</span>;</span>
<span class="line" id="L705"></span>
<span class="line" id="L706"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..<span class="tok-number">36</span>) |i| {</span>
<span class="line" id="L707"> r = HeadersParser.initDynamic(<span class="tok-number">0</span>);</span>
<span class="line" id="L708"> <span class="tok-kw">try</span> std.testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(i)), r.findHeadersEnd(data[<span class="tok-number">0</span>..i]));</span>
<span class="line" id="L709"> <span class="tok-kw">try</span> std.testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(<span class="tok-number">35</span> - i)), r.findHeadersEnd(data[i..]));</span>
<span class="line" id="L710"> }</span>
<span class="line" id="L711">}</span>
<span class="line" id="L712"></span>
<span class="line" id="L713"><span class="tok-kw">test</span> <span class="tok-str">"HeadersParser.findChunkedLen"</span> {</span>
<span class="line" id="L714"> <span class="tok-kw">var</span> r: HeadersParser = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L715"> <span class="tok-kw">const</span> data = <span class="tok-str">"Ff\r\nf0f000 ; ext\n0\r\nffffffffffffffffffffffffffffffffffffffff\r\n"</span>;</span>
<span class="line" id="L716"></span>
<span class="line" id="L717"> r = HeadersParser.initDynamic(<span class="tok-number">0</span>);</span>
<span class="line" id="L718"> r.state = .chunk_head_size;</span>
<span class="line" id="L719"> r.next_chunk_length = <span class="tok-number">0</span>;</span>
<span class="line" id="L720"></span>
<span class="line" id="L721"> <span class="tok-kw">const</span> first = r.findChunkedLen(data[<span class="tok-number">0</span>..]);</span>
<span class="line" id="L722"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">4</span>), first);</span>
<span class="line" id="L723"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-number">0xff</span>), r.next_chunk_length);</span>
<span class="line" id="L724"> <span class="tok-kw">try</span> testing.expectEqual(State.chunk_data, r.state);</span>
<span class="line" id="L725"> r.state = .chunk_head_size;</span>
<span class="line" id="L726"> r.next_chunk_length = <span class="tok-number">0</span>;</span>
<span class="line" id="L727"></span>
<span class="line" id="L728"> <span class="tok-kw">const</span> second = r.findChunkedLen(data[first..]);</span>
<span class="line" id="L729"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">13</span>), second);</span>
<span class="line" id="L730"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-number">0xf0f000</span>), r.next_chunk_length);</span>
<span class="line" id="L731"> <span class="tok-kw">try</span> testing.expectEqual(State.chunk_data, r.state);</span>
<span class="line" id="L732"> r.state = .chunk_head_size;</span>
<span class="line" id="L733"> r.next_chunk_length = <span class="tok-number">0</span>;</span>
<span class="line" id="L734"></span>
<span class="line" id="L735"> <span class="tok-kw">const</span> third = r.findChunkedLen(data[first + second ..]);</span>
<span class="line" id="L736"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">3</span>), third);</span>
<span class="line" id="L737"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-number">0</span>), r.next_chunk_length);</span>
<span class="line" id="L738"> <span class="tok-kw">try</span> testing.expectEqual(State.chunk_data, r.state);</span>
<span class="line" id="L739"> r.state = .chunk_head_size;</span>
<span class="line" id="L740"> r.next_chunk_length = <span class="tok-number">0</span>;</span>
<span class="line" id="L741"></span>
<span class="line" id="L742"> <span class="tok-kw">const</span> fourth = r.findChunkedLen(data[first + second + third ..]);</span>
<span class="line" id="L743"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">16</span>), fourth);</span>
<span class="line" id="L744"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-number">0xffffffffffffffff</span>), r.next_chunk_length);</span>
<span class="line" id="L745"> <span class="tok-kw">try</span> testing.expectEqual(State.invalid, r.state);</span>
<span class="line" id="L746">}</span>
<span class="line" id="L747"></span>
<span class="line" id="L748"><span class="tok-kw">test</span> <span class="tok-str">"HeadersParser.read length"</span> {</span>
<span class="line" id="L749"> <span class="tok-comment">// mock BufferedConnection for read</span>
</span>
<span class="line" id="L750"></span>
<span class="line" id="L751"> <span class="tok-kw">var</span> r = HeadersParser.initDynamic(<span class="tok-number">256</span>);</span>
<span class="line" id="L752"> <span class="tok-kw">defer</span> r.header_bytes.deinit(std.testing.allocator);</span>
<span class="line" id="L753"> <span class="tok-kw">const</span> data = <span class="tok-str">"GET / HTTP/1.1\r\nHost: localhost\r\nContent-Length: 5\r\n\r\nHello"</span>;</span>
<span class="line" id="L754"> <span class="tok-kw">var</span> fbs = std.io.fixedBufferStream(data);</span>
<span class="line" id="L755"></span>
<span class="line" id="L756"> <span class="tok-kw">var</span> conn = MockBufferedConnection{</span>
<span class="line" id="L757"> .conn = fbs,</span>
<span class="line" id="L758"> };</span>
<span class="line" id="L759"></span>
<span class="line" id="L760"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) { <span class="tok-comment">// read headers</span>
</span>
<span class="line" id="L761"> <span class="tok-kw">try</span> conn.fill();</span>
<span class="line" id="L762"></span>
<span class="line" id="L763"> <span class="tok-kw">const</span> nchecked = <span class="tok-kw">try</span> r.checkCompleteHead(std.testing.allocator, conn.peek());</span>
<span class="line" id="L764"> conn.drop(<span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(nchecked)));</span>
<span class="line" id="L765"></span>
<span class="line" id="L766"> <span class="tok-kw">if</span> (r.state.isContent()) <span class="tok-kw">break</span>;</span>
<span class="line" id="L767"> }</span>
<span class="line" id="L768"></span>
<span class="line" id="L769"> <span class="tok-kw">var</span> buf: [<span class="tok-number">8</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L770"></span>
<span class="line" id="L771"> r.next_chunk_length = <span class="tok-number">5</span>;</span>
<span class="line" id="L772"> <span class="tok-kw">const</span> len = <span class="tok-kw">try</span> r.read(&conn, &buf, <span class="tok-null">false</span>);</span>
<span class="line" id="L773"> <span class="tok-kw">try</span> std.testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">5</span>), len);</span>
<span class="line" id="L774"> <span class="tok-kw">try</span> std.testing.expectEqualStrings(<span class="tok-str">"Hello"</span>, buf[<span class="tok-number">0</span>..len]);</span>
<span class="line" id="L775"></span>
<span class="line" id="L776"> <span class="tok-kw">try</span> std.testing.expectEqualStrings(<span class="tok-str">"GET / HTTP/1.1\r\nHost: localhost\r\nContent-Length: 5\r\n\r\n"</span>, r.header_bytes.items);</span>
<span class="line" id="L777">}</span>
<span class="line" id="L778"></span>
<span class="line" id="L779"><span class="tok-kw">test</span> <span class="tok-str">"HeadersParser.read chunked"</span> {</span>
<span class="line" id="L780"> <span class="tok-comment">// mock BufferedConnection for read</span>
</span>
<span class="line" id="L781"></span>
<span class="line" id="L782"> <span class="tok-kw">var</span> r = HeadersParser.initDynamic(<span class="tok-number">256</span>);</span>
<span class="line" id="L783"> <span class="tok-kw">defer</span> r.header_bytes.deinit(std.testing.allocator);</span>
<span class="line" id="L784"> <span class="tok-kw">const</span> data = <span class="tok-str">"GET / HTTP/1.1\r\nHost: localhost\r\n\r\n2\r\nHe\r\n2\r\nll\r\n1\r\no\r\n0\r\n\r\n"</span>;</span>
<span class="line" id="L785"> <span class="tok-kw">var</span> fbs = std.io.fixedBufferStream(data);</span>
<span class="line" id="L786"></span>
<span class="line" id="L787"> <span class="tok-kw">var</span> conn = MockBufferedConnection{</span>
<span class="line" id="L788"> .conn = fbs,</span>
<span class="line" id="L789"> };</span>
<span class="line" id="L790"></span>
<span class="line" id="L791"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) { <span class="tok-comment">// read headers</span>
</span>
<span class="line" id="L792"> <span class="tok-kw">try</span> conn.fill();</span>
<span class="line" id="L793"></span>
<span class="line" id="L794"> <span class="tok-kw">const</span> nchecked = <span class="tok-kw">try</span> r.checkCompleteHead(std.testing.allocator, conn.peek());</span>
<span class="line" id="L795"> conn.drop(<span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(nchecked)));</span>
<span class="line" id="L796"></span>
<span class="line" id="L797"> <span class="tok-kw">if</span> (r.state.isContent()) <span class="tok-kw">break</span>;</span>
<span class="line" id="L798"> }</span>
<span class="line" id="L799"> <span class="tok-kw">var</span> buf: [<span class="tok-number">8</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L800"></span>
<span class="line" id="L801"> r.state = .chunk_head_size;</span>
<span class="line" id="L802"> <span class="tok-kw">const</span> len = <span class="tok-kw">try</span> r.read(&conn, &buf, <span class="tok-null">false</span>);</span>
<span class="line" id="L803"> <span class="tok-kw">try</span> std.testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">5</span>), len);</span>
<span class="line" id="L804"> <span class="tok-kw">try</span> std.testing.expectEqualStrings(<span class="tok-str">"Hello"</span>, buf[<span class="tok-number">0</span>..len]);</span>
<span class="line" id="L805"></span>
<span class="line" id="L806"> <span class="tok-kw">try</span> std.testing.expectEqualStrings(<span class="tok-str">"GET / HTTP/1.1\r\nHost: localhost\r\n\r\n"</span>, r.header_bytes.items);</span>
<span class="line" id="L807">}</span>
<span class="line" id="L808"></span>
<span class="line" id="L809"><span class="tok-kw">test</span> <span class="tok-str">"HeadersParser.read chunked trailer"</span> {</span>
<span class="line" id="L810"> <span class="tok-comment">// mock BufferedConnection for read</span>
</span>
<span class="line" id="L811"></span>
<span class="line" id="L812"> <span class="tok-kw">var</span> r = HeadersParser.initDynamic(<span class="tok-number">256</span>);</span>
<span class="line" id="L813"> <span class="tok-kw">defer</span> r.header_bytes.deinit(std.testing.allocator);</span>
<span class="line" id="L814"> <span class="tok-kw">const</span> data = <span class="tok-str">"GET / HTTP/1.1\r\nHost: localhost\r\n\r\n2\r\nHe\r\n2\r\nll\r\n1\r\no\r\n0\r\nContent-Type: text/plain\r\n\r\n"</span>;</span>
<span class="line" id="L815"> <span class="tok-kw">var</span> fbs = std.io.fixedBufferStream(data);</span>
<span class="line" id="L816"></span>
<span class="line" id="L817"> <span class="tok-kw">var</span> conn = MockBufferedConnection{</span>
<span class="line" id="L818"> .conn = fbs,</span>
<span class="line" id="L819"> };</span>
<span class="line" id="L820"></span>
<span class="line" id="L821"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) { <span class="tok-comment">// read headers</span>
</span>
<span class="line" id="L822"> <span class="tok-kw">try</span> conn.fill();</span>
<span class="line" id="L823"></span>
<span class="line" id="L824"> <span class="tok-kw">const</span> nchecked = <span class="tok-kw">try</span> r.checkCompleteHead(std.testing.allocator, conn.peek());</span>
<span class="line" id="L825"> conn.drop(<span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(nchecked)));</span>
<span class="line" id="L826"></span>
<span class="line" id="L827"> <span class="tok-kw">if</span> (r.state.isContent()) <span class="tok-kw">break</span>;</span>
<span class="line" id="L828"> }</span>
<span class="line" id="L829"> <span class="tok-kw">var</span> buf: [<span class="tok-number">8</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L830"></span>
<span class="line" id="L831"> r.state = .chunk_head_size;</span>
<span class="line" id="L832"> <span class="tok-kw">const</span> len = <span class="tok-kw">try</span> r.read(&conn, &buf, <span class="tok-null">false</span>);</span>
<span class="line" id="L833"> <span class="tok-kw">try</span> std.testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">5</span>), len);</span>
<span class="line" id="L834"> <span class="tok-kw">try</span> std.testing.expectEqualStrings(<span class="tok-str">"Hello"</span>, buf[<span class="tok-number">0</span>..len]);</span>
<span class="line" id="L835"></span>
<span class="line" id="L836"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) { <span class="tok-comment">// read headers</span>
</span>
<span class="line" id="L837"> <span class="tok-kw">try</span> conn.fill();</span>
<span class="line" id="L838"></span>
<span class="line" id="L839"> <span class="tok-kw">const</span> nchecked = <span class="tok-kw">try</span> r.checkCompleteHead(std.testing.allocator, conn.peek());</span>
<span class="line" id="L840"> conn.drop(<span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(nchecked)));</span>
<span class="line" id="L841"></span>
<span class="line" id="L842"> <span class="tok-kw">if</span> (r.state.isContent()) <span class="tok-kw">break</span>;</span>
<span class="line" id="L843"> }</span>
<span class="line" id="L844"></span>
<span class="line" id="L845"> <span class="tok-kw">try</span> std.testing.expectEqualStrings(<span class="tok-str">"GET / HTTP/1.1\r\nHost: localhost\r\n\r\nContent-Type: text/plain\r\n\r\n"</span>, r.header_bytes.items);</span>
<span class="line" id="L846">}</span>
<span class="line" id="L847"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! A lock that supports one writer or many readers.</span></span>
<span class="line" id="L2"><span class="tok-comment">//! This API is for kernel threads, not evented I/O.</span></span>
<span class="line" id="L3"><span class="tok-comment">//! This API requires being initialized at runtime, and initialization</span></span>
<span class="line" id="L4"><span class="tok-comment">//! can fail. Once initialized, the core operations cannot fail.</span></span>
<span class="line" id="L5"></span>
<span class="line" id="L6">impl: Impl = .{},</span>
<span class="line" id="L7"></span>
<span class="line" id="L8"><span class="tok-kw">const</span> RwLock = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L9"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L10"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L11"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L12"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L13"></span>
<span class="line" id="L14"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Impl = <span class="tok-kw">if</span> (builtin.single_threaded)</span>
<span class="line" id="L15"> SingleThreadedRwLock</span>
<span class="line" id="L16"><span class="tok-kw">else</span> <span class="tok-kw">if</span> (std.Thread.use_pthreads)</span>
<span class="line" id="L17"> PthreadRwLock</span>
<span class="line" id="L18"><span class="tok-kw">else</span></span>
<span class="line" id="L19"> DefaultRwLock;</span>
<span class="line" id="L20"></span>
<span class="line" id="L21"><span class="tok-comment">/// Attempts to obtain exclusive lock ownership.</span></span>
<span class="line" id="L22"><span class="tok-comment">/// Returns `true` if the lock is obtained, `false` otherwise.</span></span>
<span class="line" id="L23"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">tryLock</span>(rwl: *RwLock) <span class="tok-type">bool</span> {</span>
<span class="line" id="L24"> <span class="tok-kw">return</span> rwl.impl.tryLock();</span>
<span class="line" id="L25">}</span>
<span class="line" id="L26"></span>
<span class="line" id="L27"><span class="tok-comment">/// Blocks until exclusive lock ownership is acquired.</span></span>
<span class="line" id="L28"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">lock</span>(rwl: *RwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L29"> <span class="tok-kw">return</span> rwl.impl.lock();</span>
<span class="line" id="L30">}</span>
<span class="line" id="L31"></span>
<span class="line" id="L32"><span class="tok-comment">/// Releases a held exclusive lock.</span></span>
<span class="line" id="L33"><span class="tok-comment">/// Asserts the lock is held exclusively.</span></span>
<span class="line" id="L34"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">unlock</span>(rwl: *RwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L35"> <span class="tok-kw">return</span> rwl.impl.unlock();</span>
<span class="line" id="L36">}</span>
<span class="line" id="L37"></span>
<span class="line" id="L38"><span class="tok-comment">/// Attempts to obtain shared lock ownership.</span></span>
<span class="line" id="L39"><span class="tok-comment">/// Returns `true` if the lock is obtained, `false` otherwise.</span></span>
<span class="line" id="L40"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">tryLockShared</span>(rwl: *RwLock) <span class="tok-type">bool</span> {</span>
<span class="line" id="L41"> <span class="tok-kw">return</span> rwl.impl.tryLockShared();</span>
<span class="line" id="L42">}</span>
<span class="line" id="L43"></span>
<span class="line" id="L44"><span class="tok-comment">/// Blocks until shared lock ownership is acquired.</span></span>
<span class="line" id="L45"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">lockShared</span>(rwl: *RwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L46"> <span class="tok-kw">return</span> rwl.impl.lockShared();</span>
<span class="line" id="L47">}</span>
<span class="line" id="L48"></span>
<span class="line" id="L49"><span class="tok-comment">/// Releases a held shared lock.</span></span>
<span class="line" id="L50"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">unlockShared</span>(rwl: *RwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L51"> <span class="tok-kw">return</span> rwl.impl.unlockShared();</span>
<span class="line" id="L52">}</span>
<span class="line" id="L53"></span>
<span class="line" id="L54"><span class="tok-comment">/// Single-threaded applications use this for deadlock checks in</span></span>
<span class="line" id="L55"><span class="tok-comment">/// debug mode, and no-ops in release modes.</span></span>
<span class="line" id="L56"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> SingleThreadedRwLock = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L57"> state: <span class="tok-kw">enum</span> { unlocked, locked_exclusive, locked_shared } = .unlocked,</span>
<span class="line" id="L58"> shared_count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L59"></span>
<span class="line" id="L60"> <span class="tok-comment">/// Attempts to obtain exclusive lock ownership.</span></span>
<span class="line" id="L61"> <span class="tok-comment">/// Returns `true` if the lock is obtained, `false` otherwise.</span></span>
<span class="line" id="L62"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">tryLock</span>(rwl: *SingleThreadedRwLock) <span class="tok-type">bool</span> {</span>
<span class="line" id="L63"> <span class="tok-kw">switch</span> (rwl.state) {</span>
<span class="line" id="L64"> .unlocked => {</span>
<span class="line" id="L65"> assert(rwl.shared_count == <span class="tok-number">0</span>);</span>
<span class="line" id="L66"> rwl.state = .locked_exclusive;</span>
<span class="line" id="L67"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L68"> },</span>
<span class="line" id="L69"> .locked_exclusive, .locked_shared => <span class="tok-kw">return</span> <span class="tok-null">false</span>,</span>
<span class="line" id="L70"> }</span>
<span class="line" id="L71"> }</span>
<span class="line" id="L72"></span>
<span class="line" id="L73"> <span class="tok-comment">/// Blocks until exclusive lock ownership is acquired.</span></span>
<span class="line" id="L74"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">lock</span>(rwl: *SingleThreadedRwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L75"> assert(rwl.state == .unlocked); <span class="tok-comment">// deadlock detected</span>
</span>
<span class="line" id="L76"> assert(rwl.shared_count == <span class="tok-number">0</span>); <span class="tok-comment">// corrupted state detected</span>
</span>
<span class="line" id="L77"> rwl.state = .locked_exclusive;</span>
<span class="line" id="L78"> }</span>
<span class="line" id="L79"></span>
<span class="line" id="L80"> <span class="tok-comment">/// Releases a held exclusive lock.</span></span>
<span class="line" id="L81"> <span class="tok-comment">/// Asserts the lock is held exclusively.</span></span>
<span class="line" id="L82"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">unlock</span>(rwl: *SingleThreadedRwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L83"> assert(rwl.state == .locked_exclusive);</span>
<span class="line" id="L84"> assert(rwl.shared_count == <span class="tok-number">0</span>); <span class="tok-comment">// corrupted state detected</span>
</span>
<span class="line" id="L85"> rwl.state = .unlocked;</span>
<span class="line" id="L86"> }</span>
<span class="line" id="L87"></span>
<span class="line" id="L88"> <span class="tok-comment">/// Attempts to obtain shared lock ownership.</span></span>
<span class="line" id="L89"> <span class="tok-comment">/// Returns `true` if the lock is obtained, `false` otherwise.</span></span>
<span class="line" id="L90"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">tryLockShared</span>(rwl: *SingleThreadedRwLock) <span class="tok-type">bool</span> {</span>
<span class="line" id="L91"> <span class="tok-kw">switch</span> (rwl.state) {</span>
<span class="line" id="L92"> .unlocked => {</span>
<span class="line" id="L93"> rwl.state = .locked_shared;</span>
<span class="line" id="L94"> assert(rwl.shared_count == <span class="tok-number">0</span>);</span>
<span class="line" id="L95"> rwl.shared_count = <span class="tok-number">1</span>;</span>
<span class="line" id="L96"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L97"> },</span>
<span class="line" id="L98"> .locked_exclusive, .locked_shared => <span class="tok-kw">return</span> <span class="tok-null">false</span>,</span>
<span class="line" id="L99"> }</span>
<span class="line" id="L100"> }</span>
<span class="line" id="L101"></span>
<span class="line" id="L102"> <span class="tok-comment">/// Blocks until shared lock ownership is acquired.</span></span>
<span class="line" id="L103"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">lockShared</span>(rwl: *SingleThreadedRwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L104"> <span class="tok-kw">switch</span> (rwl.state) {</span>
<span class="line" id="L105"> .unlocked => {</span>
<span class="line" id="L106"> rwl.state = .locked_shared;</span>
<span class="line" id="L107"> assert(rwl.shared_count == <span class="tok-number">0</span>);</span>
<span class="line" id="L108"> rwl.shared_count = <span class="tok-number">1</span>;</span>
<span class="line" id="L109"> },</span>
<span class="line" id="L110"> .locked_shared => {</span>
<span class="line" id="L111"> rwl.shared_count += <span class="tok-number">1</span>;</span>
<span class="line" id="L112"> },</span>
<span class="line" id="L113"> .locked_exclusive => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// deadlock detected</span>
</span>
<span class="line" id="L114"> }</span>
<span class="line" id="L115"> }</span>
<span class="line" id="L116"></span>
<span class="line" id="L117"> <span class="tok-comment">/// Releases a held shared lock.</span></span>
<span class="line" id="L118"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">unlockShared</span>(rwl: *SingleThreadedRwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L119"> <span class="tok-kw">switch</span> (rwl.state) {</span>
<span class="line" id="L120"> .unlocked => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// too many calls to `unlockShared`</span>
</span>
<span class="line" id="L121"> .locked_exclusive => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// exclusively held lock</span>
</span>
<span class="line" id="L122"> .locked_shared => {</span>
<span class="line" id="L123"> rwl.shared_count -= <span class="tok-number">1</span>;</span>
<span class="line" id="L124"> <span class="tok-kw">if</span> (rwl.shared_count == <span class="tok-number">0</span>) {</span>
<span class="line" id="L125"> rwl.state = .unlocked;</span>
<span class="line" id="L126"> }</span>
<span class="line" id="L127"> },</span>
<span class="line" id="L128"> }</span>
<span class="line" id="L129"> }</span>
<span class="line" id="L130">};</span>
<span class="line" id="L131"></span>
<span class="line" id="L132"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> PthreadRwLock = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L133"> rwlock: std.c.pthread_rwlock_t = .{},</span>
<span class="line" id="L134"></span>
<span class="line" id="L135"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">tryLock</span>(rwl: *PthreadRwLock) <span class="tok-type">bool</span> {</span>
<span class="line" id="L136"> <span class="tok-kw">return</span> std.c.pthread_rwlock_trywrlock(&rwl.rwlock) == .SUCCESS;</span>
<span class="line" id="L137"> }</span>
<span class="line" id="L138"></span>
<span class="line" id="L139"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">lock</span>(rwl: *PthreadRwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L140"> <span class="tok-kw">const</span> rc = std.c.pthread_rwlock_wrlock(&rwl.rwlock);</span>
<span class="line" id="L141"> assert(rc == .SUCCESS);</span>
<span class="line" id="L142"> }</span>
<span class="line" id="L143"></span>
<span class="line" id="L144"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">unlock</span>(rwl: *PthreadRwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L145"> <span class="tok-kw">const</span> rc = std.c.pthread_rwlock_unlock(&rwl.rwlock);</span>
<span class="line" id="L146"> assert(rc == .SUCCESS);</span>
<span class="line" id="L147"> }</span>
<span class="line" id="L148"></span>
<span class="line" id="L149"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">tryLockShared</span>(rwl: *PthreadRwLock) <span class="tok-type">bool</span> {</span>
<span class="line" id="L150"> <span class="tok-kw">return</span> std.c.pthread_rwlock_tryrdlock(&rwl.rwlock) == .SUCCESS;</span>
<span class="line" id="L151"> }</span>
<span class="line" id="L152"></span>
<span class="line" id="L153"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">lockShared</span>(rwl: *PthreadRwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L154"> <span class="tok-kw">const</span> rc = std.c.pthread_rwlock_rdlock(&rwl.rwlock);</span>
<span class="line" id="L155"> assert(rc == .SUCCESS);</span>
<span class="line" id="L156"> }</span>
<span class="line" id="L157"></span>
<span class="line" id="L158"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">unlockShared</span>(rwl: *PthreadRwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L159"> <span class="tok-kw">const</span> rc = std.c.pthread_rwlock_unlock(&rwl.rwlock);</span>
<span class="line" id="L160"> assert(rc == .SUCCESS);</span>
<span class="line" id="L161"> }</span>
<span class="line" id="L162">};</span>
<span class="line" id="L163"></span>
<span class="line" id="L164"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> DefaultRwLock = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L165"> state: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L166"> mutex: std.Thread.Mutex = .{},</span>
<span class="line" id="L167"> semaphore: std.Thread.Semaphore = .{},</span>
<span class="line" id="L168"></span>
<span class="line" id="L169"> <span class="tok-kw">const</span> IS_WRITING: <span class="tok-type">usize</span> = <span class="tok-number">1</span>;</span>
<span class="line" id="L170"> <span class="tok-kw">const</span> WRITER: <span class="tok-type">usize</span> = <span class="tok-number">1</span> << <span class="tok-number">1</span>;</span>
<span class="line" id="L171"> <span class="tok-kw">const</span> READER: <span class="tok-type">usize</span> = <span class="tok-number">1</span> << (<span class="tok-number">1</span> + <span class="tok-builtin">@bitSizeOf</span>(Count));</span>
<span class="line" id="L172"> <span class="tok-kw">const</span> WRITER_MASK: <span class="tok-type">usize</span> = std.math.maxInt(Count) << <span class="tok-builtin">@ctz</span>(WRITER);</span>
<span class="line" id="L173"> <span class="tok-kw">const</span> READER_MASK: <span class="tok-type">usize</span> = std.math.maxInt(Count) << <span class="tok-builtin">@ctz</span>(READER);</span>
<span class="line" id="L174"> <span class="tok-kw">const</span> Count = std.meta.Int(.unsigned, <span class="tok-builtin">@divFloor</span>(<span class="tok-builtin">@bitSizeOf</span>(<span class="tok-type">usize</span>) - <span class="tok-number">1</span>, <span class="tok-number">2</span>));</span>
<span class="line" id="L175"></span>
<span class="line" id="L176"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">tryLock</span>(rwl: *DefaultRwLock) <span class="tok-type">bool</span> {</span>
<span class="line" id="L177"> <span class="tok-kw">if</span> (rwl.mutex.tryLock()) {</span>
<span class="line" id="L178"> <span class="tok-kw">const</span> state = <span class="tok-builtin">@atomicLoad</span>(<span class="tok-type">usize</span>, &rwl.state, .SeqCst);</span>
<span class="line" id="L179"> <span class="tok-kw">if</span> (state & READER_MASK == <span class="tok-number">0</span>) {</span>
<span class="line" id="L180"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &rwl.state, .Or, IS_WRITING, .SeqCst);</span>
<span class="line" id="L181"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L182"> }</span>
<span class="line" id="L183"></span>
<span class="line" id="L184"> rwl.mutex.unlock();</span>
<span class="line" id="L185"> }</span>
<span class="line" id="L186"></span>
<span class="line" id="L187"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L188"> }</span>
<span class="line" id="L189"></span>
<span class="line" id="L190"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">lock</span>(rwl: *DefaultRwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L191"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &rwl.state, .Add, WRITER, .SeqCst);</span>
<span class="line" id="L192"> rwl.mutex.lock();</span>
<span class="line" id="L193"></span>
<span class="line" id="L194"> <span class="tok-kw">const</span> state = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &rwl.state, .Add, IS_WRITING -% WRITER, .SeqCst);</span>
<span class="line" id="L195"> <span class="tok-kw">if</span> (state & READER_MASK != <span class="tok-number">0</span>)</span>
<span class="line" id="L196"> rwl.semaphore.wait();</span>
<span class="line" id="L197"> }</span>
<span class="line" id="L198"></span>
<span class="line" id="L199"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">unlock</span>(rwl: *DefaultRwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L200"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &rwl.state, .And, ~IS_WRITING, .SeqCst);</span>
<span class="line" id="L201"> rwl.mutex.unlock();</span>
<span class="line" id="L202"> }</span>
<span class="line" id="L203"></span>
<span class="line" id="L204"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">tryLockShared</span>(rwl: *DefaultRwLock) <span class="tok-type">bool</span> {</span>
<span class="line" id="L205"> <span class="tok-kw">const</span> state = <span class="tok-builtin">@atomicLoad</span>(<span class="tok-type">usize</span>, &rwl.state, .SeqCst);</span>
<span class="line" id="L206"> <span class="tok-kw">if</span> (state & (IS_WRITING | WRITER_MASK) == <span class="tok-number">0</span>) {</span>
<span class="line" id="L207"> _ = <span class="tok-builtin">@cmpxchgStrong</span>(</span>
<span class="line" id="L208"> <span class="tok-type">usize</span>,</span>
<span class="line" id="L209"> &rwl.state,</span>
<span class="line" id="L210"> state,</span>
<span class="line" id="L211"> state + READER,</span>
<span class="line" id="L212"> .SeqCst,</span>
<span class="line" id="L213"> .SeqCst,</span>
<span class="line" id="L214"> ) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L215"> }</span>
<span class="line" id="L216"></span>
<span class="line" id="L217"> <span class="tok-kw">if</span> (rwl.mutex.tryLock()) {</span>
<span class="line" id="L218"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &rwl.state, .Add, READER, .SeqCst);</span>
<span class="line" id="L219"> rwl.mutex.unlock();</span>
<span class="line" id="L220"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L221"> }</span>
<span class="line" id="L222"></span>
<span class="line" id="L223"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L224"> }</span>
<span class="line" id="L225"></span>
<span class="line" id="L226"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">lockShared</span>(rwl: *DefaultRwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L227"> <span class="tok-kw">var</span> state = <span class="tok-builtin">@atomicLoad</span>(<span class="tok-type">usize</span>, &rwl.state, .SeqCst);</span>
<span class="line" id="L228"> <span class="tok-kw">while</span> (state & (IS_WRITING | WRITER_MASK) == <span class="tok-number">0</span>) {</span>
<span class="line" id="L229"> state = <span class="tok-builtin">@cmpxchgWeak</span>(</span>
<span class="line" id="L230"> <span class="tok-type">usize</span>,</span>
<span class="line" id="L231"> &rwl.state,</span>
<span class="line" id="L232"> state,</span>
<span class="line" id="L233"> state + READER,</span>
<span class="line" id="L234"> .SeqCst,</span>
<span class="line" id="L235"> .SeqCst,</span>
<span class="line" id="L236"> ) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span>;</span>
<span class="line" id="L237"> }</span>
<span class="line" id="L238"></span>
<span class="line" id="L239"> rwl.mutex.lock();</span>
<span class="line" id="L240"> _ = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &rwl.state, .Add, READER, .SeqCst);</span>
<span class="line" id="L241"> rwl.mutex.unlock();</span>
<span class="line" id="L242"> }</span>
<span class="line" id="L243"></span>
<span class="line" id="L244"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">unlockShared</span>(rwl: *DefaultRwLock) <span class="tok-type">void</span> {</span>
<span class="line" id="L245"> <span class="tok-kw">const</span> state = <span class="tok-builtin">@atomicRmw</span>(<span class="tok-type">usize</span>, &rwl.state, .Sub, READER, .SeqCst);</span>
<span class="line" id="L246"></span>
<span class="line" id="L247"> <span class="tok-kw">if</span> ((state & READER_MASK == READER) <span class="tok-kw">and</span> (state & IS_WRITING != <span class="tok-number">0</span>))</span>
<span class="line" id="L248"> rwl.semaphore.post();</span>
<span class="line" id="L249"> }</span>
<span class="line" id="L250">};</span>
<span class="line" id="L251"></span>
<span class="line" id="L252"><span class="tok-kw">test</span> <span class="tok-str">"DefaultRwLock - internal state"</span> {</span>
<span class="line" id="L253"> <span class="tok-kw">var</span> rwl = DefaultRwLock{};</span>
<span class="line" id="L254"></span>
<span class="line" id="L255"> <span class="tok-comment">// The following failed prior to the fix for Issue #13163,</span>
</span>
<span class="line" id="L256"> <span class="tok-comment">// where the WRITER flag was subtracted by the lock method.</span>
</span>
<span class="line" id="L257"></span>
<span class="line" id="L258"> rwl.lock();</span>
<span class="line" id="L259"> rwl.unlock();</span>
<span class="line" id="L260"> <span class="tok-kw">try</span> testing.expectEqual(rwl, DefaultRwLock{});</span>
<span class="line" id="L261">}</span>
<span class="line" id="L262"></span>
<span class="line" id="L263"><span class="tok-kw">test</span> <span class="tok-str">"RwLock - smoke test"</span> {</span>
<span class="line" id="L264"> <span class="tok-kw">var</span> rwl = RwLock{};</span>
<span class="line" id="L265"></span>
<span class="line" id="L266"> rwl.lock();</span>
<span class="line" id="L267"> <span class="tok-kw">try</span> testing.expect(!rwl.tryLock());</span>
<span class="line" id="L268"> <span class="tok-kw">try</span> testing.expect(!rwl.tryLockShared());</span>
<span class="line" id="L269"> rwl.unlock();</span>
<span class="line" id="L270"></span>
<span class="line" id="L271"> <span class="tok-kw">try</span> testing.expect(rwl.tryLock());</span>
<span class="line" id="L272"> <span class="tok-kw">try</span> testing.expect(!rwl.tryLock());</span>
<span class="line" id="L273"> <span class="tok-kw">try</span> testing.expect(!rwl.tryLockShared());</span>
<span class="line" id="L274"> rwl.unlock();</span>
<span class="line" id="L275"></span>
<span class="line" id="L276"> rwl.lockShared();</span>
<span class="line" id="L277"> <span class="tok-kw">try</span> testing.expect(!rwl.tryLock());</span>
<span class="line" id="L278"> <span class="tok-kw">try</span> testing.expect(rwl.tryLockShared());</span>
<span class="line" id="L279"> rwl.unlockShared();</span>
<span class="line" id="L280"> rwl.unlockShared();</span>
<span class="line" id="L281"></span>
<span class="line" id="L282"> <span class="tok-kw">try</span> testing.expect(rwl.tryLockShared());</span>
<span class="line" id="L283"> <span class="tok-kw">try</span> testing.expect(!rwl.tryLock());</span>
<span class="line" id="L284"> <span class="tok-kw">try</span> testing.expect(rwl.tryLockShared());</span>
<span class="line" id="L285"> rwl.unlockShared();</span>
<span class="line" id="L286"> rwl.unlockShared();</span>
<span class="line" id="L287"></span>
<span class="line" id="L288"> rwl.lock();</span>
<span class="line" id="L289"> rwl.unlock();</span>
<span class="line" id="L290">}</span>
<span class="line" id="L291"></span>
<span class="line" id="L292"><span class="tok-kw">test</span> <span class="tok-str">"RwLock - concurrent access"</span> {</span>
<span class="line" id="L293"> <span class="tok-kw">if</span> (builtin.single_threaded)</span>
<span class="line" id="L294"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L295"></span>
<span class="line" id="L296"> <span class="tok-kw">const</span> num_writers: <span class="tok-type">usize</span> = <span class="tok-number">2</span>;</span>
<span class="line" id="L297"> <span class="tok-kw">const</span> num_readers: <span class="tok-type">usize</span> = <span class="tok-number">4</span>;</span>
<span class="line" id="L298"> <span class="tok-kw">const</span> num_writes: <span class="tok-type">usize</span> = <span class="tok-number">10000</span>;</span>
<span class="line" id="L299"> <span class="tok-kw">const</span> num_reads: <span class="tok-type">usize</span> = num_writes * <span class="tok-number">2</span>;</span>
<span class="line" id="L300"></span>
<span class="line" id="L301"> <span class="tok-kw">const</span> Runner = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L302"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L303"></span>
<span class="line" id="L304"> rwl: RwLock = .{},</span>
<span class="line" id="L305"> writes: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L306"> reads: std.atomic.Atomic(<span class="tok-type">usize</span>) = std.atomic.Atomic(<span class="tok-type">usize</span>).init(<span class="tok-number">0</span>),</span>
<span class="line" id="L307"></span>
<span class="line" id="L308"> term1: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L309"> term2: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L310"> term_sum: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L311"></span>
<span class="line" id="L312"> <span class="tok-kw">fn</span> <span class="tok-fn">reader</span>(self: *Self) !<span class="tok-type">void</span> {</span>
<span class="line" id="L313"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L314"> self.rwl.lockShared();</span>
<span class="line" id="L315"> <span class="tok-kw">defer</span> self.rwl.unlockShared();</span>
<span class="line" id="L316"></span>
<span class="line" id="L317"> <span class="tok-kw">if</span> (self.writes >= num_writes <span class="tok-kw">or</span> self.reads.load(.Unordered) >= num_reads)</span>
<span class="line" id="L318"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L319"></span>
<span class="line" id="L320"> <span class="tok-kw">try</span> self.check();</span>
<span class="line" id="L321"></span>
<span class="line" id="L322"> _ = self.reads.fetchAdd(<span class="tok-number">1</span>, .Monotonic);</span>
<span class="line" id="L323"> }</span>
<span class="line" id="L324"> }</span>
<span class="line" id="L325"></span>
<span class="line" id="L326"> <span class="tok-kw">fn</span> <span class="tok-fn">writer</span>(self: *Self, thread_idx: <span class="tok-type">usize</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L327"> <span class="tok-kw">var</span> prng = std.rand.DefaultPrng.init(thread_idx);</span>
<span class="line" id="L328"> <span class="tok-kw">var</span> rnd = prng.random();</span>
<span class="line" id="L329"></span>
<span class="line" id="L330"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L331"> self.rwl.lock();</span>
<span class="line" id="L332"> <span class="tok-kw">defer</span> self.rwl.unlock();</span>
<span class="line" id="L333"></span>
<span class="line" id="L334"> <span class="tok-kw">if</span> (self.writes >= num_writes)</span>
<span class="line" id="L335"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L336"></span>
<span class="line" id="L337"> <span class="tok-kw">try</span> self.check();</span>
<span class="line" id="L338"></span>
<span class="line" id="L339"> <span class="tok-kw">const</span> term1 = rnd.int(<span class="tok-type">usize</span>);</span>
<span class="line" id="L340"> self.term1 = term1;</span>
<span class="line" id="L341"> <span class="tok-kw">try</span> std.Thread.yield();</span>
<span class="line" id="L342"></span>
<span class="line" id="L343"> <span class="tok-kw">const</span> term2 = rnd.int(<span class="tok-type">usize</span>);</span>
<span class="line" id="L344"> self.term2 = term2;</span>
<span class="line" id="L345"> <span class="tok-kw">try</span> std.Thread.yield();</span>
<span class="line" id="L346"></span>
<span class="line" id="L347"> self.term_sum = term1 +% term2;</span>
<span class="line" id="L348"> self.writes += <span class="tok-number">1</span>;</span>
<span class="line" id="L349"> }</span>
<span class="line" id="L350"> }</span>
<span class="line" id="L351"></span>
<span class="line" id="L352"> <span class="tok-kw">fn</span> <span class="tok-fn">check</span>(self: *<span class="tok-kw">const</span> Self) !<span class="tok-type">void</span> {</span>
<span class="line" id="L353"> <span class="tok-kw">const</span> term_sum = self.term_sum;</span>
<span class="line" id="L354"> <span class="tok-kw">try</span> std.Thread.yield();</span>
<span class="line" id="L355"></span>
<span class="line" id="L356"> <span class="tok-kw">const</span> term2 = self.term2;</span>
<span class="line" id="L357"> <span class="tok-kw">try</span> std.Thread.yield();</span>
<span class="line" id="L358"></span>
<span class="line" id="L359"> <span class="tok-kw">const</span> term1 = self.term1;</span>
<span class="line" id="L360"> <span class="tok-kw">try</span> testing.expectEqual(term_sum, term1 +% term2);</span>
<span class="line" id="L361"> }</span>
<span class="line" id="L362"> };</span>
<span class="line" id="L363"></span>
<span class="line" id="L364"> <span class="tok-kw">var</span> runner = Runner{};</span>
<span class="line" id="L365"> <span class="tok-kw">var</span> threads: [num_writers + num_readers]std.Thread = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L366"></span>
<span class="line" id="L367"> <span class="tok-kw">for</span> (threads[<span class="tok-number">0</span>..num_writers], <span class="tok-number">0</span>..) |*t, i| t.* = <span class="tok-kw">try</span> std.Thread.spawn(.{}, Runner.writer, .{ &runner, i });</span>
<span class="line" id="L368"> <span class="tok-kw">for</span> (threads[num_writers..]) |*t| t.* = <span class="tok-kw">try</span> std.Thread.spawn(.{}, Runner.reader, .{&runner});</span>
<span class="line" id="L369"></span>
<span class="line" id="L370"> <span class="tok-kw">for</span> (threads) |t| t.join();</span>
<span class="line" id="L371"></span>
<span class="line" id="L372"> <span class="tok-kw">try</span> testing.expectEqual(num_writes, runner.writes);</span>
<span class="line" id="L373"></span>
<span class="line" id="L374"> <span class="tok-comment">//std.debug.print("reads={}\n", .{ runner.reads.load(.Unordered)});</span>
</span>
<span class="line" id="L375">}</span>
<span class="line" id="L376"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! A semaphore is an unsigned integer that blocks the kernel thread if</span></span>
<span class="line" id="L2"><span class="tok-comment">//! the number would become negative.</span></span>
<span class="line" id="L3"><span class="tok-comment">//! This API supports static initialization and does not require deinitialization.</span></span>
<span class="line" id="L4"></span>
<span class="line" id="L5">mutex: Mutex = .{},</span>
<span class="line" id="L6">cond: Condition = .{},</span>
<span class="line" id="L7"><span class="tok-comment">/// It is OK to initialize this field to any value.</span></span>
<span class="line" id="L8">permits: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L9"></span>
<span class="line" id="L10"><span class="tok-kw">const</span> Semaphore = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L11"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L12"><span class="tok-kw">const</span> Mutex = std.Thread.Mutex;</span>
<span class="line" id="L13"><span class="tok-kw">const</span> Condition = std.Thread.Condition;</span>
<span class="line" id="L14"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L15"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L16"></span>
<span class="line" id="L17"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(sem: *Semaphore) <span class="tok-type">void</span> {</span>
<span class="line" id="L18"> sem.mutex.lock();</span>
<span class="line" id="L19"> <span class="tok-kw">defer</span> sem.mutex.unlock();</span>
<span class="line" id="L20"></span>
<span class="line" id="L21"> <span class="tok-kw">while</span> (sem.permits == <span class="tok-number">0</span>)</span>
<span class="line" id="L22"> sem.cond.wait(&sem.mutex);</span>
<span class="line" id="L23"></span>
<span class="line" id="L24"> sem.permits -= <span class="tok-number">1</span>;</span>
<span class="line" id="L25"> <span class="tok-kw">if</span> (sem.permits > <span class="tok-number">0</span>)</span>
<span class="line" id="L26"> sem.cond.signal();</span>
<span class="line" id="L27">}</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">post</span>(sem: *Semaphore) <span class="tok-type">void</span> {</span>
<span class="line" id="L30"> sem.mutex.lock();</span>
<span class="line" id="L31"> <span class="tok-kw">defer</span> sem.mutex.unlock();</span>
<span class="line" id="L32"></span>
<span class="line" id="L33"> sem.permits += <span class="tok-number">1</span>;</span>
<span class="line" id="L34"> sem.cond.signal();</span>
<span class="line" id="L35">}</span>
<span class="line" id="L36"></span>
<span class="line" id="L37"><span class="tok-kw">test</span> <span class="tok-str">"Thread.Semaphore"</span> {</span>
<span class="line" id="L38"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L39"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L40"> }</span>
<span class="line" id="L41"></span>
<span class="line" id="L42"> <span class="tok-kw">const</span> TestContext = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L43"> sem: *Semaphore,</span>
<span class="line" id="L44"> n: *<span class="tok-type">i32</span>,</span>
<span class="line" id="L45"> <span class="tok-kw">fn</span> <span class="tok-fn">worker</span>(ctx: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L46"> ctx.sem.wait();</span>
<span class="line" id="L47"> ctx.n.* += <span class="tok-number">1</span>;</span>
<span class="line" id="L48"> ctx.sem.post();</span>
<span class="line" id="L49"> }</span>
<span class="line" id="L50"> };</span>
<span class="line" id="L51"> <span class="tok-kw">const</span> num_threads = <span class="tok-number">3</span>;</span>
<span class="line" id="L52"> <span class="tok-kw">var</span> sem = Semaphore{ .permits = <span class="tok-number">1</span> };</span>
<span class="line" id="L53"> <span class="tok-kw">var</span> threads: [num_threads]std.Thread = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L54"> <span class="tok-kw">var</span> n: <span class="tok-type">i32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L55"> <span class="tok-kw">var</span> ctx = TestContext{ .sem = &sem, .n = &n };</span>
<span class="line" id="L56"></span>
<span class="line" id="L57"> <span class="tok-kw">for</span> (&threads) |*t| t.* = <span class="tok-kw">try</span> std.Thread.spawn(.{}, TestContext.worker, .{&ctx});</span>
<span class="line" id="L58"> <span class="tok-kw">for</span> (threads) |t| t.join();</span>
<span class="line" id="L59"> sem.wait();</span>
<span class="line" id="L60"> <span class="tok-kw">try</span> testing.expect(n == num_threads);</span>
<span class="line" id="L61">}</span>
<span class="line" id="L62"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! Mutex is a synchronization primitive which enforces atomic access to a shared region of code known as the "critical section".</span></span>
<span class="line" id="L2"><span class="tok-comment">//! It does this by blocking ensuring only one thread is in the critical section at any given point in time by blocking the others.</span></span>
<span class="line" id="L3"><span class="tok-comment">//! Mutex can be statically initialized and is at most `@sizeOf(u64)` large.</span></span>
<span class="line" id="L4"><span class="tok-comment">//! Use `lock()` or `tryLock()` to enter the critical section and `unlock()` to leave it.</span></span>
<span class="line" id="L5"><span class="tok-comment">//!</span></span>
<span class="line" id="L6"><span class="tok-comment">//! Example:</span></span>
<span class="line" id="L7"><span class="tok-comment">//! ```</span></span>
<span class="line" id="L8"><span class="tok-comment">//! var m = Mutex{};</span></span>
<span class="line" id="L9"><span class="tok-comment">//!</span></span>
<span class="line" id="L10"><span class="tok-comment">//! {</span></span>
<span class="line" id="L11"><span class="tok-comment">//! m.lock();</span></span>
<span class="line" id="L12"><span class="tok-comment">//! defer m.unlock();</span></span>
<span class="line" id="L13"><span class="tok-comment">//! // ... critical section code</span></span>
<span class="line" id="L14"><span class="tok-comment">//! }</span></span>
<span class="line" id="L15"><span class="tok-comment">//!</span></span>
<span class="line" id="L16"><span class="tok-comment">//! if (m.tryLock()) {</span></span>
<span class="line" id="L17"><span class="tok-comment">//! defer m.unlock();</span></span>
<span class="line" id="L18"><span class="tok-comment">//! // ... critical section code</span></span>
<span class="line" id="L19"><span class="tok-comment">//! }</span></span>
<span class="line" id="L20"><span class="tok-comment">//! ```</span></span>
<span class="line" id="L21"></span>
<span class="line" id="L22"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L23"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L24"><span class="tok-kw">const</span> Mutex = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L25"></span>
<span class="line" id="L26"><span class="tok-kw">const</span> os = std.os;</span>
<span class="line" id="L27"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L28"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L29"><span class="tok-kw">const</span> Atomic = std.atomic.Atomic;</span>
<span class="line" id="L30"><span class="tok-kw">const</span> Thread = std.Thread;</span>
<span class="line" id="L31"><span class="tok-kw">const</span> Futex = Thread.Futex;</span>
<span class="line" id="L32"></span>
<span class="line" id="L33">impl: Impl = .{},</span>
<span class="line" id="L34"></span>
<span class="line" id="L35"><span class="tok-comment">/// Tries to acquire the mutex without blocking the caller's thread.</span></span>
<span class="line" id="L36"><span class="tok-comment">/// Returns `false` if the calling thread would have to block to acquire it.</span></span>
<span class="line" id="L37"><span class="tok-comment">/// Otherwise, returns `true` and the caller should `unlock()` the Mutex to release it.</span></span>
<span class="line" id="L38"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">tryLock</span>(self: *Mutex) <span class="tok-type">bool</span> {</span>
<span class="line" id="L39"> <span class="tok-kw">return</span> self.impl.tryLock();</span>
<span class="line" id="L40">}</span>
<span class="line" id="L41"></span>
<span class="line" id="L42"><span class="tok-comment">/// Acquires the mutex, blocking the caller's thread until it can.</span></span>
<span class="line" id="L43"><span class="tok-comment">/// It is undefined behavior if the mutex is already held by the caller's thread.</span></span>
<span class="line" id="L44"><span class="tok-comment">/// Once acquired, call `unlock()` on the Mutex to release it.</span></span>
<span class="line" id="L45"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">lock</span>(self: *Mutex) <span class="tok-type">void</span> {</span>
<span class="line" id="L46"> self.impl.lock();</span>
<span class="line" id="L47">}</span>
<span class="line" id="L48"></span>
<span class="line" id="L49"><span class="tok-comment">/// Releases the mutex which was previously acquired with `lock()` or `tryLock()`.</span></span>
<span class="line" id="L50"><span class="tok-comment">/// It is undefined behavior if the mutex is unlocked from a different thread that it was locked from.</span></span>
<span class="line" id="L51"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">unlock</span>(self: *Mutex) <span class="tok-type">void</span> {</span>
<span class="line" id="L52"> self.impl.unlock();</span>
<span class="line" id="L53">}</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"><span class="tok-kw">const</span> Impl = <span class="tok-kw">if</span> (builtin.mode == .Debug <span class="tok-kw">and</span> !builtin.single_threaded)</span>
<span class="line" id="L56"> DebugImpl</span>
<span class="line" id="L57"><span class="tok-kw">else</span></span>
<span class="line" id="L58"> ReleaseImpl;</span>
<span class="line" id="L59"></span>
<span class="line" id="L60"><span class="tok-kw">const</span> ReleaseImpl = <span class="tok-kw">if</span> (builtin.single_threaded)</span>
<span class="line" id="L61"> SingleThreadedImpl</span>
<span class="line" id="L62"><span class="tok-kw">else</span> <span class="tok-kw">if</span> (builtin.os.tag == .windows)</span>
<span class="line" id="L63"> WindowsImpl</span>
<span class="line" id="L64"><span class="tok-kw">else</span> <span class="tok-kw">if</span> (builtin.os.tag.isDarwin())</span>
<span class="line" id="L65"> DarwinImpl</span>
<span class="line" id="L66"><span class="tok-kw">else</span></span>
<span class="line" id="L67"> FutexImpl;</span>
<span class="line" id="L68"></span>
<span class="line" id="L69"><span class="tok-kw">const</span> DebugImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L70"> locking_thread: Atomic(Thread.Id) = Atomic(Thread.Id).init(<span class="tok-number">0</span>), <span class="tok-comment">// 0 means it's not locked.</span>
</span>
<span class="line" id="L71"> impl: ReleaseImpl = .{},</span>
<span class="line" id="L72"></span>
<span class="line" id="L73"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">tryLock</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">bool</span> {</span>
<span class="line" id="L74"> <span class="tok-kw">const</span> locking = self.impl.tryLock();</span>
<span class="line" id="L75"> <span class="tok-kw">if</span> (locking) {</span>
<span class="line" id="L76"> self.locking_thread.store(Thread.getCurrentId(), .Unordered);</span>
<span class="line" id="L77"> }</span>
<span class="line" id="L78"> <span class="tok-kw">return</span> locking;</span>
<span class="line" id="L79"> }</span>
<span class="line" id="L80"></span>
<span class="line" id="L81"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">lock</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L82"> <span class="tok-kw">const</span> current_id = Thread.getCurrentId();</span>
<span class="line" id="L83"> <span class="tok-kw">if</span> (self.locking_thread.load(.Unordered) == current_id <span class="tok-kw">and</span> current_id != <span class="tok-number">0</span>) {</span>
<span class="line" id="L84"> <span class="tok-builtin">@panic</span>(<span class="tok-str">"Deadlock detected"</span>);</span>
<span class="line" id="L85"> }</span>
<span class="line" id="L86"> self.impl.lock();</span>
<span class="line" id="L87"> self.locking_thread.store(current_id, .Unordered);</span>
<span class="line" id="L88"> }</span>
<span class="line" id="L89"></span>
<span class="line" id="L90"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">unlock</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L91"> assert(self.locking_thread.load(.Unordered) == Thread.getCurrentId());</span>
<span class="line" id="L92"> self.locking_thread.store(<span class="tok-number">0</span>, .Unordered);</span>
<span class="line" id="L93"> self.impl.unlock();</span>
<span class="line" id="L94"> }</span>
<span class="line" id="L95">};</span>
<span class="line" id="L96"></span>
<span class="line" id="L97"><span class="tok-kw">const</span> SingleThreadedImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L98"> is_locked: <span class="tok-type">bool</span> = <span class="tok-null">false</span>,</span>
<span class="line" id="L99"></span>
<span class="line" id="L100"> <span class="tok-kw">fn</span> <span class="tok-fn">tryLock</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">bool</span> {</span>
<span class="line" id="L101"> <span class="tok-kw">if</span> (self.is_locked) <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L102"> self.is_locked = <span class="tok-null">true</span>;</span>
<span class="line" id="L103"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L104"> }</span>
<span class="line" id="L105"></span>
<span class="line" id="L106"> <span class="tok-kw">fn</span> <span class="tok-fn">lock</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L107"> <span class="tok-kw">if</span> (!self.tryLock()) {</span>
<span class="line" id="L108"> <span class="tok-kw">unreachable</span>; <span class="tok-comment">// deadlock detected</span>
</span>
<span class="line" id="L109"> }</span>
<span class="line" id="L110"> }</span>
<span class="line" id="L111"></span>
<span class="line" id="L112"> <span class="tok-kw">fn</span> <span class="tok-fn">unlock</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L113"> assert(self.is_locked);</span>
<span class="line" id="L114"> self.is_locked = <span class="tok-null">false</span>;</span>
<span class="line" id="L115"> }</span>
<span class="line" id="L116">};</span>
<span class="line" id="L117"></span>
<span class="line" id="L118"><span class="tok-comment">// SRWLOCK on windows is almost always faster than Futex solution.</span>
</span>
<span class="line" id="L119"><span class="tok-comment">// It also implements an efficient Condition with requeue support for us.</span>
</span>
<span class="line" id="L120"><span class="tok-kw">const</span> WindowsImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L121"> srwlock: os.windows.SRWLOCK = .{},</span>
<span class="line" id="L122"></span>
<span class="line" id="L123"> <span class="tok-kw">fn</span> <span class="tok-fn">tryLock</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">bool</span> {</span>
<span class="line" id="L124"> <span class="tok-kw">return</span> os.windows.kernel32.TryAcquireSRWLockExclusive(&self.srwlock) != os.windows.FALSE;</span>
<span class="line" id="L125"> }</span>
<span class="line" id="L126"></span>
<span class="line" id="L127"> <span class="tok-kw">fn</span> <span class="tok-fn">lock</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L128"> os.windows.kernel32.AcquireSRWLockExclusive(&self.srwlock);</span>
<span class="line" id="L129"> }</span>
<span class="line" id="L130"></span>
<span class="line" id="L131"> <span class="tok-kw">fn</span> <span class="tok-fn">unlock</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L132"> os.windows.kernel32.ReleaseSRWLockExclusive(&self.srwlock);</span>
<span class="line" id="L133"> }</span>
<span class="line" id="L134">};</span>
<span class="line" id="L135"></span>
<span class="line" id="L136"><span class="tok-comment">// os_unfair_lock on darwin supports priority inheritance and is generally faster than Futex solutions.</span>
</span>
<span class="line" id="L137"><span class="tok-kw">const</span> DarwinImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L138"> oul: os.darwin.os_unfair_lock = .{},</span>
<span class="line" id="L139"></span>
<span class="line" id="L140"> <span class="tok-kw">fn</span> <span class="tok-fn">tryLock</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">bool</span> {</span>
<span class="line" id="L141"> <span class="tok-kw">return</span> os.darwin.os_unfair_lock_trylock(&self.oul);</span>
<span class="line" id="L142"> }</span>
<span class="line" id="L143"></span>
<span class="line" id="L144"> <span class="tok-kw">fn</span> <span class="tok-fn">lock</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L145"> os.darwin.os_unfair_lock_lock(&self.oul);</span>
<span class="line" id="L146"> }</span>
<span class="line" id="L147"></span>
<span class="line" id="L148"> <span class="tok-kw">fn</span> <span class="tok-fn">unlock</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L149"> os.darwin.os_unfair_lock_unlock(&self.oul);</span>
<span class="line" id="L150"> }</span>
<span class="line" id="L151">};</span>
<span class="line" id="L152"></span>
<span class="line" id="L153"><span class="tok-kw">const</span> FutexImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L154"> state: Atomic(<span class="tok-type">u32</span>) = Atomic(<span class="tok-type">u32</span>).init(unlocked),</span>
<span class="line" id="L155"></span>
<span class="line" id="L156"> <span class="tok-kw">const</span> unlocked = <span class="tok-number">0b00</span>;</span>
<span class="line" id="L157"> <span class="tok-kw">const</span> locked = <span class="tok-number">0b01</span>;</span>
<span class="line" id="L158"> <span class="tok-kw">const</span> contended = <span class="tok-number">0b11</span>; <span class="tok-comment">// must contain the `locked` bit for x86 optimization below</span>
</span>
<span class="line" id="L159"></span>
<span class="line" id="L160"> <span class="tok-kw">fn</span> <span class="tok-fn">tryLock</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">bool</span> {</span>
<span class="line" id="L161"> <span class="tok-comment">// Lock with compareAndSwap instead of tryCompareAndSwap to avoid reporting spurious CAS failure.</span>
</span>
<span class="line" id="L162"> <span class="tok-kw">return</span> self.lockFast(<span class="tok-str">"compareAndSwap"</span>);</span>
<span class="line" id="L163"> }</span>
<span class="line" id="L164"></span>
<span class="line" id="L165"> <span class="tok-kw">fn</span> <span class="tok-fn">lock</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L166"> <span class="tok-comment">// Lock with tryCompareAndSwap instead of compareAndSwap due to being more inline-able on LL/SC archs like ARM.</span>
</span>
<span class="line" id="L167"> <span class="tok-kw">if</span> (!self.lockFast(<span class="tok-str">"tryCompareAndSwap"</span>)) {</span>
<span class="line" id="L168"> self.lockSlow();</span>
<span class="line" id="L169"> }</span>
<span class="line" id="L170"> }</span>
<span class="line" id="L171"></span>
<span class="line" id="L172"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">lockFast</span>(self: *<span class="tok-builtin">@This</span>(), <span class="tok-kw">comptime</span> cas_fn_name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L173"> <span class="tok-comment">// On x86, use `lock bts` instead of `lock cmpxchg` as:</span>
</span>
<span class="line" id="L174"> <span class="tok-comment">// - they both seem to mark the cache-line as modified regardless: https://stackoverflow.com/a/63350048</span>
</span>
<span class="line" id="L175"> <span class="tok-comment">// - `lock bts` is smaller instruction-wise which makes it better for inlining</span>
</span>
<span class="line" id="L176"> <span class="tok-kw">if</span> (<span class="tok-kw">comptime</span> builtin.target.cpu.arch.isX86()) {</span>
<span class="line" id="L177"> <span class="tok-kw">const</span> locked_bit = <span class="tok-builtin">@ctz</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, locked));</span>
<span class="line" id="L178"> <span class="tok-kw">return</span> self.state.bitSet(locked_bit, .Acquire) == <span class="tok-number">0</span>;</span>
<span class="line" id="L179"> }</span>
<span class="line" id="L180"></span>
<span class="line" id="L181"> <span class="tok-comment">// Acquire barrier ensures grabbing the lock happens before the critical section</span>
</span>
<span class="line" id="L182"> <span class="tok-comment">// and that the previous lock holder's critical section happens before we grab the lock.</span>
</span>
<span class="line" id="L183"> <span class="tok-kw">const</span> casFn = <span class="tok-builtin">@field</span>(<span class="tok-builtin">@TypeOf</span>(self.state), cas_fn_name);</span>
<span class="line" id="L184"> <span class="tok-kw">return</span> casFn(&self.state, unlocked, locked, .Acquire, .Monotonic) == <span class="tok-null">null</span>;</span>
<span class="line" id="L185"> }</span>
<span class="line" id="L186"></span>
<span class="line" id="L187"> <span class="tok-kw">fn</span> <span class="tok-fn">lockSlow</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L188"> <span class="tok-builtin">@setCold</span>(<span class="tok-null">true</span>);</span>
<span class="line" id="L189"></span>
<span class="line" id="L190"> <span class="tok-comment">// Avoid doing an atomic swap below if we already know the state is contended.</span>
</span>
<span class="line" id="L191"> <span class="tok-comment">// An atomic swap unconditionally stores which marks the cache-line as modified unnecessarily.</span>
</span>
<span class="line" id="L192"> <span class="tok-kw">if</span> (self.state.load(.Monotonic) == contended) {</span>
<span class="line" id="L193"> Futex.wait(&self.state, contended);</span>
<span class="line" id="L194"> }</span>
<span class="line" id="L195"></span>
<span class="line" id="L196"> <span class="tok-comment">// Try to acquire the lock while also telling the existing lock holder that there are threads waiting.</span>
</span>
<span class="line" id="L197"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L198"> <span class="tok-comment">// Once we sleep on the Futex, we must acquire the mutex using `contended` rather than `locked`.</span>
</span>
<span class="line" id="L199"> <span class="tok-comment">// If not, threads sleeping on the Futex wouldn't see the state change in unlock and potentially deadlock.</span>
</span>
<span class="line" id="L200"> <span class="tok-comment">// The downside is that the last mutex unlocker will see `contended` and do an unnecessary Futex wake</span>
</span>
<span class="line" id="L201"> <span class="tok-comment">// but this is better than having to wake all waiting threads on mutex unlock.</span>
</span>
<span class="line" id="L202"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L203"> <span class="tok-comment">// Acquire barrier ensures grabbing the lock happens before the critical section</span>
</span>
<span class="line" id="L204"> <span class="tok-comment">// and that the previous lock holder's critical section happens before we grab the lock.</span>
</span>
<span class="line" id="L205"> <span class="tok-kw">while</span> (self.state.swap(contended, .Acquire) != unlocked) {</span>
<span class="line" id="L206"> Futex.wait(&self.state, contended);</span>
<span class="line" id="L207"> }</span>
<span class="line" id="L208"> }</span>
<span class="line" id="L209"></span>
<span class="line" id="L210"> <span class="tok-kw">fn</span> <span class="tok-fn">unlock</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L211"> <span class="tok-comment">// Unlock the mutex and wake up a waiting thread if any.</span>
</span>
<span class="line" id="L212"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L213"> <span class="tok-comment">// A waiting thread will acquire with `contended` instead of `locked`</span>
</span>
<span class="line" id="L214"> <span class="tok-comment">// which ensures that it wakes up another thread on the next unlock().</span>
</span>
<span class="line" id="L215"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L216"> <span class="tok-comment">// Release barrier ensures the critical section happens before we let go of the lock</span>
</span>
<span class="line" id="L217"> <span class="tok-comment">// and that our critical section happens before the next lock holder grabs the lock.</span>
</span>
<span class="line" id="L218"> <span class="tok-kw">const</span> state = self.state.swap(unlocked, .Release);</span>
<span class="line" id="L219"> assert(state != unlocked);</span>
<span class="line" id="L220"></span>
<span class="line" id="L221"> <span class="tok-kw">if</span> (state == contended) {</span>
<span class="line" id="L222"> Futex.wake(&self.state, <span class="tok-number">1</span>);</span>
<span class="line" id="L223"> }</span>
<span class="line" id="L224"> }</span>
<span class="line" id="L225">};</span>
<span class="line" id="L226"></span>
<span class="line" id="L227"><span class="tok-kw">test</span> <span class="tok-str">"Mutex - smoke test"</span> {</span>
<span class="line" id="L228"> <span class="tok-kw">var</span> mutex = Mutex{};</span>
<span class="line" id="L229"></span>
<span class="line" id="L230"> <span class="tok-kw">try</span> testing.expect(mutex.tryLock());</span>
<span class="line" id="L231"> <span class="tok-kw">try</span> testing.expect(!mutex.tryLock());</span>
<span class="line" id="L232"> mutex.unlock();</span>
<span class="line" id="L233"></span>
<span class="line" id="L234"> mutex.lock();</span>
<span class="line" id="L235"> <span class="tok-kw">try</span> testing.expect(!mutex.tryLock());</span>
<span class="line" id="L236"> mutex.unlock();</span>
<span class="line" id="L237">}</span>
<span class="line" id="L238"></span>
<span class="line" id="L239"><span class="tok-comment">// A counter which is incremented without atomic instructions</span>
</span>
<span class="line" id="L240"><span class="tok-kw">const</span> NonAtomicCounter = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L241"> <span class="tok-comment">// direct u128 could maybe use xmm ops on x86 which are atomic</span>
</span>
<span class="line" id="L242"> value: [<span class="tok-number">2</span>]<span class="tok-type">u64</span> = [_]<span class="tok-type">u64</span>{ <span class="tok-number">0</span>, <span class="tok-number">0</span> },</span>
<span class="line" id="L243"></span>
<span class="line" id="L244"> <span class="tok-kw">fn</span> <span class="tok-fn">get</span>(self: NonAtomicCounter) <span class="tok-type">u128</span> {</span>
<span class="line" id="L245"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">u128</span>, <span class="tok-builtin">@bitCast</span>(self.value));</span>
<span class="line" id="L246"> }</span>
<span class="line" id="L247"></span>
<span class="line" id="L248"> <span class="tok-kw">fn</span> <span class="tok-fn">inc</span>(self: *NonAtomicCounter) <span class="tok-type">void</span> {</span>
<span class="line" id="L249"> <span class="tok-kw">for</span> (<span class="tok-builtin">@as</span>([<span class="tok-number">2</span>]<span class="tok-type">u64</span>, <span class="tok-builtin">@bitCast</span>(self.get() + <span class="tok-number">1</span>)), <span class="tok-number">0</span>..) |v, i| {</span>
<span class="line" id="L250"> <span class="tok-builtin">@as</span>(*<span class="tok-kw">volatile</span> <span class="tok-type">u64</span>, <span class="tok-builtin">@ptrCast</span>(&self.value[i])).* = v;</span>
<span class="line" id="L251"> }</span>
<span class="line" id="L252"> }</span>
<span class="line" id="L253">};</span>
<span class="line" id="L254"></span>
<span class="line" id="L255"><span class="tok-kw">test</span> <span class="tok-str">"Mutex - many uncontended"</span> {</span>
<span class="line" id="L256"> <span class="tok-comment">// This test requires spawning threads.</span>
</span>
<span class="line" id="L257"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L258"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L259"> }</span>
<span class="line" id="L260"></span>
<span class="line" id="L261"> <span class="tok-kw">const</span> num_threads = <span class="tok-number">4</span>;</span>
<span class="line" id="L262"> <span class="tok-kw">const</span> num_increments = <span class="tok-number">1000</span>;</span>
<span class="line" id="L263"></span>
<span class="line" id="L264"> <span class="tok-kw">const</span> Runner = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L265"> mutex: Mutex = .{},</span>
<span class="line" id="L266"> thread: Thread = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L267"> counter: NonAtomicCounter = .{},</span>
<span class="line" id="L268"></span>
<span class="line" id="L269"> <span class="tok-kw">fn</span> <span class="tok-fn">run</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L270"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = num_increments;</span>
<span class="line" id="L271"> <span class="tok-kw">while</span> (i > <span class="tok-number">0</span>) : (i -= <span class="tok-number">1</span>) {</span>
<span class="line" id="L272"> self.mutex.lock();</span>
<span class="line" id="L273"> <span class="tok-kw">defer</span> self.mutex.unlock();</span>
<span class="line" id="L274"></span>
<span class="line" id="L275"> self.counter.inc();</span>
<span class="line" id="L276"> }</span>
<span class="line" id="L277"> }</span>
<span class="line" id="L278"> };</span>
<span class="line" id="L279"></span>
<span class="line" id="L280"> <span class="tok-kw">var</span> runners = [_]Runner{.{}} ** num_threads;</span>
<span class="line" id="L281"> <span class="tok-kw">for</span> (&runners) |*r| r.thread = <span class="tok-kw">try</span> Thread.spawn(.{}, Runner.run, .{r});</span>
<span class="line" id="L282"> <span class="tok-kw">for</span> (runners) |r| r.thread.join();</span>
<span class="line" id="L283"> <span class="tok-kw">for</span> (runners) |r| <span class="tok-kw">try</span> testing.expectEqual(r.counter.get(), num_increments);</span>
<span class="line" id="L284">}</span>
<span class="line" id="L285"></span>
<span class="line" id="L286"><span class="tok-kw">test</span> <span class="tok-str">"Mutex - many contended"</span> {</span>
<span class="line" id="L287"> <span class="tok-comment">// This test requires spawning threads.</span>
</span>
<span class="line" id="L288"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L289"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L290"> }</span>
<span class="line" id="L291"></span>
<span class="line" id="L292"> <span class="tok-kw">const</span> num_threads = <span class="tok-number">4</span>;</span>
<span class="line" id="L293"> <span class="tok-kw">const</span> num_increments = <span class="tok-number">1000</span>;</span>
<span class="line" id="L294"></span>
<span class="line" id="L295"> <span class="tok-kw">const</span> Runner = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L296"> mutex: Mutex = .{},</span>
<span class="line" id="L297"> counter: NonAtomicCounter = .{},</span>
<span class="line" id="L298"></span>
<span class="line" id="L299"> <span class="tok-kw">fn</span> <span class="tok-fn">run</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L300"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = num_increments;</span>
<span class="line" id="L301"> <span class="tok-kw">while</span> (i > <span class="tok-number">0</span>) : (i -= <span class="tok-number">1</span>) {</span>
<span class="line" id="L302"> <span class="tok-comment">// Occasionally hint to let another thread run.</span>
</span>
<span class="line" id="L303"> <span class="tok-kw">defer</span> <span class="tok-kw">if</span> (i % <span class="tok-number">100</span> == <span class="tok-number">0</span>) Thread.yield() <span class="tok-kw">catch</span> {};</span>
<span class="line" id="L304"></span>
<span class="line" id="L305"> self.mutex.lock();</span>
<span class="line" id="L306"> <span class="tok-kw">defer</span> self.mutex.unlock();</span>
<span class="line" id="L307"></span>
<span class="line" id="L308"> self.counter.inc();</span>
<span class="line" id="L309"> }</span>
<span class="line" id="L310"> }</span>
<span class="line" id="L311"> };</span>
<span class="line" id="L312"></span>
<span class="line" id="L313"> <span class="tok-kw">var</span> runner = Runner{};</span>
<span class="line" id="L314"></span>
<span class="line" id="L315"> <span class="tok-kw">var</span> threads: [num_threads]Thread = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L316"> <span class="tok-kw">for</span> (&threads) |*t| t.* = <span class="tok-kw">try</span> Thread.spawn(.{}, Runner.run, .{&runner});</span>
<span class="line" id="L317"> <span class="tok-kw">for</span> (threads) |t| t.join();</span>
<span class="line" id="L318"></span>
<span class="line" id="L319"> <span class="tok-kw">try</span> testing.expectEqual(runner.counter.get(), num_increments * num_threads);</span>
<span class="line" id="L320">}</span>
<span class="line" id="L321"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! Condition variables are used with a Mutex to efficiently wait for an arbitrary condition to occur.</span></span>
<span class="line" id="L2"><span class="tok-comment">//! It does this by atomically unlocking the mutex, blocking the thread until notified, and finally re-locking the mutex.</span></span>
<span class="line" id="L3"><span class="tok-comment">//! Condition can be statically initialized and is at most `@sizeOf(u64)` large.</span></span>
<span class="line" id="L4"><span class="tok-comment">//!</span></span>
<span class="line" id="L5"><span class="tok-comment">//! Example:</span></span>
<span class="line" id="L6"><span class="tok-comment">//! ```</span></span>
<span class="line" id="L7"><span class="tok-comment">//! var m = Mutex{};</span></span>
<span class="line" id="L8"><span class="tok-comment">//! var c = Condition{};</span></span>
<span class="line" id="L9"><span class="tok-comment">//! var predicate = false;</span></span>
<span class="line" id="L10"><span class="tok-comment">//!</span></span>
<span class="line" id="L11"><span class="tok-comment">//! fn consumer() void {</span></span>
<span class="line" id="L12"><span class="tok-comment">//! m.lock();</span></span>
<span class="line" id="L13"><span class="tok-comment">//! defer m.unlock();</span></span>
<span class="line" id="L14"><span class="tok-comment">//!</span></span>
<span class="line" id="L15"><span class="tok-comment">//! while (!predicate) {</span></span>
<span class="line" id="L16"><span class="tok-comment">//! c.wait(&m);</span></span>
<span class="line" id="L17"><span class="tok-comment">//! }</span></span>
<span class="line" id="L18"><span class="tok-comment">//! }</span></span>
<span class="line" id="L19"><span class="tok-comment">//!</span></span>
<span class="line" id="L20"><span class="tok-comment">//! fn producer() void {</span></span>
<span class="line" id="L21"><span class="tok-comment">//! {</span></span>
<span class="line" id="L22"><span class="tok-comment">//! m.lock();</span></span>
<span class="line" id="L23"><span class="tok-comment">//! defer m.unlock();</span></span>
<span class="line" id="L24"><span class="tok-comment">//! predicate = true;</span></span>
<span class="line" id="L25"><span class="tok-comment">//! }</span></span>
<span class="line" id="L26"><span class="tok-comment">//! c.signal();</span></span>
<span class="line" id="L27"><span class="tok-comment">//! }</span></span>
<span class="line" id="L28"><span class="tok-comment">//!</span></span>
<span class="line" id="L29"><span class="tok-comment">//! const thread = try std.Thread.spawn(.{}, producer, .{});</span></span>
<span class="line" id="L30"><span class="tok-comment">//! consumer();</span></span>
<span class="line" id="L31"><span class="tok-comment">//! thread.join();</span></span>
<span class="line" id="L32"><span class="tok-comment">//! ```</span></span>
<span class="line" id="L33"><span class="tok-comment">//!</span></span>
<span class="line" id="L34"><span class="tok-comment">//! Note that condition variables can only reliably unblock threads that are sequenced before them using the same Mutex.</span></span>
<span class="line" id="L35"><span class="tok-comment">//! This means that the following is allowed to deadlock:</span></span>
<span class="line" id="L36"><span class="tok-comment">//! ```</span></span>
<span class="line" id="L37"><span class="tok-comment">//! thread-1: mutex.lock()</span></span>
<span class="line" id="L38"><span class="tok-comment">//! thread-1: condition.wait(&mutex)</span></span>
<span class="line" id="L39"><span class="tok-comment">//!</span></span>
<span class="line" id="L40"><span class="tok-comment">//! thread-2: // mutex.lock() (without this, the following signal may not see the waiting thread-1)</span></span>
<span class="line" id="L41"><span class="tok-comment">//! thread-2: // mutex.unlock() (this is optional for correctness once locked above, as signal can be called while holding the mutex)</span></span>
<span class="line" id="L42"><span class="tok-comment">//! thread-2: condition.signal()</span></span>
<span class="line" id="L43"><span class="tok-comment">//! ```</span></span>
<span class="line" id="L44"></span>
<span class="line" id="L45"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L46"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L47"><span class="tok-kw">const</span> Condition = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L48"><span class="tok-kw">const</span> Mutex = std.Thread.Mutex;</span>
<span class="line" id="L49"></span>
<span class="line" id="L50"><span class="tok-kw">const</span> os = std.os;</span>
<span class="line" id="L51"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L52"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L53"><span class="tok-kw">const</span> Atomic = std.atomic.Atomic;</span>
<span class="line" id="L54"><span class="tok-kw">const</span> Futex = std.Thread.Futex;</span>
<span class="line" id="L55"></span>
<span class="line" id="L56">impl: Impl = .{},</span>
<span class="line" id="L57"></span>
<span class="line" id="L58"><span class="tok-comment">/// Atomically releases the Mutex, blocks the caller thread, then re-acquires the Mutex on return.</span></span>
<span class="line" id="L59"><span class="tok-comment">/// "Atomically" here refers to accesses done on the Condition after acquiring the Mutex.</span></span>
<span class="line" id="L60"><span class="tok-comment">///</span></span>
<span class="line" id="L61"><span class="tok-comment">/// The Mutex must be locked by the caller's thread when this function is called.</span></span>
<span class="line" id="L62"><span class="tok-comment">/// A Mutex can have multiple Conditions waiting with it concurrently, but not the opposite.</span></span>
<span class="line" id="L63"><span class="tok-comment">/// It is undefined behavior for multiple threads to wait ith different mutexes using the same Condition concurrently.</span></span>
<span class="line" id="L64"><span class="tok-comment">/// Once threads have finished waiting with one Mutex, the Condition can be used to wait with another Mutex.</span></span>
<span class="line" id="L65"><span class="tok-comment">///</span></span>
<span class="line" id="L66"><span class="tok-comment">/// A blocking call to wait() is unblocked from one of the following conditions:</span></span>
<span class="line" id="L67"><span class="tok-comment">/// - a spurious ("at random") wake up occurs</span></span>
<span class="line" id="L68"><span class="tok-comment">/// - a future call to `signal()` or `broadcast()` which has acquired the Mutex and is sequenced after this `wait()`.</span></span>
<span class="line" id="L69"><span class="tok-comment">///</span></span>
<span class="line" id="L70"><span class="tok-comment">/// Given wait() can be interrupted spuriously, the blocking condition should be checked continuously</span></span>
<span class="line" id="L71"><span class="tok-comment">/// irrespective of any notifications from `signal()` or `broadcast()`.</span></span>
<span class="line" id="L72"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(self: *Condition, mutex: *Mutex) <span class="tok-type">void</span> {</span>
<span class="line" id="L73"> self.impl.wait(mutex, <span class="tok-null">null</span>) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L74"> <span class="tok-kw">error</span>.Timeout => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// no timeout provided so we shouldn't have timed-out</span>
</span>
<span class="line" id="L75"> };</span>
<span class="line" id="L76">}</span>
<span class="line" id="L77"></span>
<span class="line" id="L78"><span class="tok-comment">/// Atomically releases the Mutex, blocks the caller thread, then re-acquires the Mutex on return.</span></span>
<span class="line" id="L79"><span class="tok-comment">/// "Atomically" here refers to accesses done on the Condition after acquiring the Mutex.</span></span>
<span class="line" id="L80"><span class="tok-comment">///</span></span>
<span class="line" id="L81"><span class="tok-comment">/// The Mutex must be locked by the caller's thread when this function is called.</span></span>
<span class="line" id="L82"><span class="tok-comment">/// A Mutex can have multiple Conditions waiting with it concurrently, but not the opposite.</span></span>
<span class="line" id="L83"><span class="tok-comment">/// It is undefined behavior for multiple threads to wait ith different mutexes using the same Condition concurrently.</span></span>
<span class="line" id="L84"><span class="tok-comment">/// Once threads have finished waiting with one Mutex, the Condition can be used to wait with another Mutex.</span></span>
<span class="line" id="L85"><span class="tok-comment">///</span></span>
<span class="line" id="L86"><span class="tok-comment">/// A blocking call to `timedWait()` is unblocked from one of the following conditions:</span></span>
<span class="line" id="L87"><span class="tok-comment">/// - a spurious ("at random") wake occurs</span></span>
<span class="line" id="L88"><span class="tok-comment">/// - the caller was blocked for around `timeout_ns` nanoseconds, in which `error.Timeout` is returned.</span></span>
<span class="line" id="L89"><span class="tok-comment">/// - a future call to `signal()` or `broadcast()` which has acquired the Mutex and is sequenced after this `timedWait()`.</span></span>
<span class="line" id="L90"><span class="tok-comment">///</span></span>
<span class="line" id="L91"><span class="tok-comment">/// Given `timedWait()` can be interrupted spuriously, the blocking condition should be checked continuously</span></span>
<span class="line" id="L92"><span class="tok-comment">/// irrespective of any notifications from `signal()` or `broadcast()`.</span></span>
<span class="line" id="L93"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">timedWait</span>(self: *Condition, mutex: *Mutex, timeout_ns: <span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L94"> <span class="tok-kw">return</span> self.impl.wait(mutex, timeout_ns);</span>
<span class="line" id="L95">}</span>
<span class="line" id="L96"></span>
<span class="line" id="L97"><span class="tok-comment">/// Unblocks at least one thread blocked in a call to `wait()` or `timedWait()` with a given Mutex.</span></span>
<span class="line" id="L98"><span class="tok-comment">/// The blocked thread must be sequenced before this call with respect to acquiring the same Mutex in order to be observable for unblocking.</span></span>
<span class="line" id="L99"><span class="tok-comment">/// `signal()` can be called with or without the relevant Mutex being acquired and have no "effect" if there's no observable blocked threads.</span></span>
<span class="line" id="L100"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">signal</span>(self: *Condition) <span class="tok-type">void</span> {</span>
<span class="line" id="L101"> self.impl.wake(.one);</span>
<span class="line" id="L102">}</span>
<span class="line" id="L103"></span>
<span class="line" id="L104"><span class="tok-comment">/// Unblocks all threads currently blocked in a call to `wait()` or `timedWait()` with a given Mutex.</span></span>
<span class="line" id="L105"><span class="tok-comment">/// The blocked threads must be sequenced before this call with respect to acquiring the same Mutex in order to be observable for unblocking.</span></span>
<span class="line" id="L106"><span class="tok-comment">/// `broadcast()` can be called with or without the relevant Mutex being acquired and have no "effect" if there's no observable blocked threads.</span></span>
<span class="line" id="L107"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">broadcast</span>(self: *Condition) <span class="tok-type">void</span> {</span>
<span class="line" id="L108"> self.impl.wake(.all);</span>
<span class="line" id="L109">}</span>
<span class="line" id="L110"></span>
<span class="line" id="L111"><span class="tok-kw">const</span> Impl = <span class="tok-kw">if</span> (builtin.single_threaded)</span>
<span class="line" id="L112"> SingleThreadedImpl</span>
<span class="line" id="L113"><span class="tok-kw">else</span> <span class="tok-kw">if</span> (builtin.os.tag == .windows)</span>
<span class="line" id="L114"> WindowsImpl</span>
<span class="line" id="L115"><span class="tok-kw">else</span></span>
<span class="line" id="L116"> FutexImpl;</span>
<span class="line" id="L117"></span>
<span class="line" id="L118"><span class="tok-kw">const</span> Notify = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L119"> one, <span class="tok-comment">// wake up only one thread</span>
</span>
<span class="line" id="L120"> all, <span class="tok-comment">// wake up all threads</span>
</span>
<span class="line" id="L121">};</span>
<span class="line" id="L122"></span>
<span class="line" id="L123"><span class="tok-kw">const</span> SingleThreadedImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L124"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(self: *Impl, mutex: *Mutex, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L125"> _ = self;</span>
<span class="line" id="L126"> _ = mutex;</span>
<span class="line" id="L127"></span>
<span class="line" id="L128"> <span class="tok-comment">// There are no other threads to wake us up.</span>
</span>
<span class="line" id="L129"> <span class="tok-comment">// So if we wait without a timeout we would never wake up.</span>
</span>
<span class="line" id="L130"> <span class="tok-kw">const</span> timeout_ns = timeout <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L131"> <span class="tok-kw">unreachable</span>; <span class="tok-comment">// deadlock detected</span>
</span>
<span class="line" id="L132"> };</span>
<span class="line" id="L133"></span>
<span class="line" id="L134"> std.time.sleep(timeout_ns);</span>
<span class="line" id="L135"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Timeout;</span>
<span class="line" id="L136"> }</span>
<span class="line" id="L137"></span>
<span class="line" id="L138"> <span class="tok-kw">fn</span> <span class="tok-fn">wake</span>(self: *Impl, <span class="tok-kw">comptime</span> notify: Notify) <span class="tok-type">void</span> {</span>
<span class="line" id="L139"> <span class="tok-comment">// There are no other threads to wake up.</span>
</span>
<span class="line" id="L140"> _ = self;</span>
<span class="line" id="L141"> _ = notify;</span>
<span class="line" id="L142"> }</span>
<span class="line" id="L143">};</span>
<span class="line" id="L144"></span>
<span class="line" id="L145"><span class="tok-kw">const</span> WindowsImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L146"> condition: os.windows.CONDITION_VARIABLE = .{},</span>
<span class="line" id="L147"></span>
<span class="line" id="L148"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(self: *Impl, mutex: *Mutex, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L149"> <span class="tok-kw">var</span> timeout_overflowed = <span class="tok-null">false</span>;</span>
<span class="line" id="L150"> <span class="tok-kw">var</span> timeout_ms: os.windows.DWORD = os.windows.INFINITE;</span>
<span class="line" id="L151"></span>
<span class="line" id="L152"> <span class="tok-kw">if</span> (timeout) |timeout_ns| {</span>
<span class="line" id="L153"> <span class="tok-comment">// Round the nanoseconds to the nearest millisecond,</span>
</span>
<span class="line" id="L154"> <span class="tok-comment">// then saturating cast it to windows DWORD for use in kernel32 call.</span>
</span>
<span class="line" id="L155"> <span class="tok-kw">const</span> ms = (timeout_ns +| (std.time.ns_per_ms / <span class="tok-number">2</span>)) / std.time.ns_per_ms;</span>
<span class="line" id="L156"> timeout_ms = std.math.cast(os.windows.DWORD, ms) <span class="tok-kw">orelse</span> std.math.maxInt(os.windows.DWORD);</span>
<span class="line" id="L157"></span>
<span class="line" id="L158"> <span class="tok-comment">// Track if the timeout overflowed into INFINITE and make sure not to wait forever.</span>
</span>
<span class="line" id="L159"> <span class="tok-kw">if</span> (timeout_ms == os.windows.INFINITE) {</span>
<span class="line" id="L160"> timeout_overflowed = <span class="tok-null">true</span>;</span>
<span class="line" id="L161"> timeout_ms -= <span class="tok-number">1</span>;</span>
<span class="line" id="L162"> }</span>
<span class="line" id="L163"> }</span>
<span class="line" id="L164"></span>
<span class="line" id="L165"> <span class="tok-kw">if</span> (<span class="tok-kw">comptime</span> builtin.mode == .Debug) {</span>
<span class="line" id="L166"> <span class="tok-comment">// The internal state of the DebugMutex needs to be handled here as well.</span>
</span>
<span class="line" id="L167"> mutex.impl.locking_thread.store(<span class="tok-number">0</span>, .Unordered);</span>
<span class="line" id="L168"> }</span>
<span class="line" id="L169"> <span class="tok-kw">const</span> rc = os.windows.kernel32.SleepConditionVariableSRW(</span>
<span class="line" id="L170"> &self.condition,</span>
<span class="line" id="L171"> <span class="tok-kw">if</span> (<span class="tok-kw">comptime</span> builtin.mode == .Debug) &mutex.impl.impl.srwlock <span class="tok-kw">else</span> &mutex.impl.srwlock,</span>
<span class="line" id="L172"> timeout_ms,</span>
<span class="line" id="L173"> <span class="tok-number">0</span>, <span class="tok-comment">// the srwlock was assumed to acquired in exclusive mode not shared</span>
</span>
<span class="line" id="L174"> );</span>
<span class="line" id="L175"> <span class="tok-kw">if</span> (<span class="tok-kw">comptime</span> builtin.mode == .Debug) {</span>
<span class="line" id="L176"> <span class="tok-comment">// The internal state of the DebugMutex needs to be handled here as well.</span>
</span>
<span class="line" id="L177"> mutex.impl.locking_thread.store(std.Thread.getCurrentId(), .Unordered);</span>
<span class="line" id="L178"> }</span>
<span class="line" id="L179"></span>
<span class="line" id="L180"> <span class="tok-comment">// Return error.Timeout if we know the timeout elapsed correctly.</span>
</span>
<span class="line" id="L181"> <span class="tok-kw">if</span> (rc == os.windows.FALSE) {</span>
<span class="line" id="L182"> assert(os.windows.kernel32.GetLastError() == .TIMEOUT);</span>
<span class="line" id="L183"> <span class="tok-kw">if</span> (!timeout_overflowed) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Timeout;</span>
<span class="line" id="L184"> }</span>
<span class="line" id="L185"> }</span>
<span class="line" id="L186"></span>
<span class="line" id="L187"> <span class="tok-kw">fn</span> <span class="tok-fn">wake</span>(self: *Impl, <span class="tok-kw">comptime</span> notify: Notify) <span class="tok-type">void</span> {</span>
<span class="line" id="L188"> <span class="tok-kw">switch</span> (notify) {</span>
<span class="line" id="L189"> .one => os.windows.kernel32.WakeConditionVariable(&self.condition),</span>
<span class="line" id="L190"> .all => os.windows.kernel32.WakeAllConditionVariable(&self.condition),</span>
<span class="line" id="L191"> }</span>
<span class="line" id="L192"> }</span>
<span class="line" id="L193">};</span>
<span class="line" id="L194"></span>
<span class="line" id="L195"><span class="tok-kw">const</span> FutexImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L196"> state: Atomic(<span class="tok-type">u32</span>) = Atomic(<span class="tok-type">u32</span>).init(<span class="tok-number">0</span>),</span>
<span class="line" id="L197"> epoch: Atomic(<span class="tok-type">u32</span>) = Atomic(<span class="tok-type">u32</span>).init(<span class="tok-number">0</span>),</span>
<span class="line" id="L198"></span>
<span class="line" id="L199"> <span class="tok-kw">const</span> one_waiter = <span class="tok-number">1</span>;</span>
<span class="line" id="L200"> <span class="tok-kw">const</span> waiter_mask = <span class="tok-number">0xffff</span>;</span>
<span class="line" id="L201"></span>
<span class="line" id="L202"> <span class="tok-kw">const</span> one_signal = <span class="tok-number">1</span> << <span class="tok-number">16</span>;</span>
<span class="line" id="L203"> <span class="tok-kw">const</span> signal_mask = <span class="tok-number">0xffff</span> << <span class="tok-number">16</span>;</span>
<span class="line" id="L204"></span>
<span class="line" id="L205"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(self: *Impl, mutex: *Mutex, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L206"> <span class="tok-comment">// Observe the epoch, then check the state again to see if we should wake up.</span>
</span>
<span class="line" id="L207"> <span class="tok-comment">// The epoch must be observed before we check the state or we could potentially miss a wake() and deadlock:</span>
</span>
<span class="line" id="L208"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L209"> <span class="tok-comment">// - T1: s = LOAD(&state)</span>
</span>
<span class="line" id="L210"> <span class="tok-comment">// - T2: UPDATE(&s, signal)</span>
</span>
<span class="line" id="L211"> <span class="tok-comment">// - T2: UPDATE(&epoch, 1) + FUTEX_WAKE(&epoch)</span>
</span>
<span class="line" id="L212"> <span class="tok-comment">// - T1: e = LOAD(&epoch) (was reordered after the state load)</span>
</span>
<span class="line" id="L213"> <span class="tok-comment">// - T1: s & signals == 0 -> FUTEX_WAIT(&epoch, e) (missed the state update + the epoch change)</span>
</span>
<span class="line" id="L214"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L215"> <span class="tok-comment">// Acquire barrier to ensure the epoch load happens before the state load.</span>
</span>
<span class="line" id="L216"> <span class="tok-kw">var</span> epoch = self.epoch.load(.Acquire);</span>
<span class="line" id="L217"> <span class="tok-kw">var</span> state = self.state.fetchAdd(one_waiter, .Monotonic);</span>
<span class="line" id="L218"> assert(state & waiter_mask != waiter_mask);</span>
<span class="line" id="L219"> state += one_waiter;</span>
<span class="line" id="L220"></span>
<span class="line" id="L221"> mutex.unlock();</span>
<span class="line" id="L222"> <span class="tok-kw">defer</span> mutex.lock();</span>
<span class="line" id="L223"></span>
<span class="line" id="L224"> <span class="tok-kw">var</span> futex_deadline = Futex.Deadline.init(timeout);</span>
<span class="line" id="L225"></span>
<span class="line" id="L226"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L227"> futex_deadline.wait(&self.epoch, epoch) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L228"> <span class="tok-comment">// On timeout, we must decrement the waiter we added above.</span>
</span>
<span class="line" id="L229"> <span class="tok-kw">error</span>.Timeout => {</span>
<span class="line" id="L230"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L231"> <span class="tok-comment">// If there's a signal when we're timing out, consume it and report being woken up instead.</span>
</span>
<span class="line" id="L232"> <span class="tok-comment">// Acquire barrier ensures code before the wake() which added the signal happens before we decrement it and return.</span>
</span>
<span class="line" id="L233"> <span class="tok-kw">while</span> (state & signal_mask != <span class="tok-number">0</span>) {</span>
<span class="line" id="L234"> <span class="tok-kw">const</span> new_state = state - one_waiter - one_signal;</span>
<span class="line" id="L235"> state = self.state.tryCompareAndSwap(state, new_state, .Acquire, .Monotonic) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span>;</span>
<span class="line" id="L236"> }</span>
<span class="line" id="L237"></span>
<span class="line" id="L238"> <span class="tok-comment">// Remove the waiter we added and officially return timed out.</span>
</span>
<span class="line" id="L239"> <span class="tok-kw">const</span> new_state = state - one_waiter;</span>
<span class="line" id="L240"> state = self.state.tryCompareAndSwap(state, new_state, .Monotonic, .Monotonic) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> err;</span>
<span class="line" id="L241"> }</span>
<span class="line" id="L242"> },</span>
<span class="line" id="L243"> };</span>
<span class="line" id="L244"></span>
<span class="line" id="L245"> epoch = self.epoch.load(.Acquire);</span>
<span class="line" id="L246"> state = self.state.load(.Monotonic);</span>
<span class="line" id="L247"></span>
<span class="line" id="L248"> <span class="tok-comment">// Try to wake up by consuming a signal and decremented the waiter we added previously.</span>
</span>
<span class="line" id="L249"> <span class="tok-comment">// Acquire barrier ensures code before the wake() which added the signal happens before we decrement it and return.</span>
</span>
<span class="line" id="L250"> <span class="tok-kw">while</span> (state & signal_mask != <span class="tok-number">0</span>) {</span>
<span class="line" id="L251"> <span class="tok-kw">const</span> new_state = state - one_waiter - one_signal;</span>
<span class="line" id="L252"> state = self.state.tryCompareAndSwap(state, new_state, .Acquire, .Monotonic) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span>;</span>
<span class="line" id="L253"> }</span>
<span class="line" id="L254"> }</span>
<span class="line" id="L255"> }</span>
<span class="line" id="L256"></span>
<span class="line" id="L257"> <span class="tok-kw">fn</span> <span class="tok-fn">wake</span>(self: *Impl, <span class="tok-kw">comptime</span> notify: Notify) <span class="tok-type">void</span> {</span>
<span class="line" id="L258"> <span class="tok-kw">var</span> state = self.state.load(.Monotonic);</span>
<span class="line" id="L259"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L260"> <span class="tok-kw">const</span> waiters = (state & waiter_mask) / one_waiter;</span>
<span class="line" id="L261"> <span class="tok-kw">const</span> signals = (state & signal_mask) / one_signal;</span>
<span class="line" id="L262"></span>
<span class="line" id="L263"> <span class="tok-comment">// Reserves which waiters to wake up by incrementing the signals count.</span>
</span>
<span class="line" id="L264"> <span class="tok-comment">// Therefore, the signals count is always less than or equal to the waiters count.</span>
</span>
<span class="line" id="L265"> <span class="tok-comment">// We don't need to Futex.wake if there's nothing to wake up or if other wake() threads have reserved to wake up the current waiters.</span>
</span>
<span class="line" id="L266"> <span class="tok-kw">const</span> wakeable = waiters - signals;</span>
<span class="line" id="L267"> <span class="tok-kw">if</span> (wakeable == <span class="tok-number">0</span>) {</span>
<span class="line" id="L268"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L269"> }</span>
<span class="line" id="L270"></span>
<span class="line" id="L271"> <span class="tok-kw">const</span> to_wake = <span class="tok-kw">switch</span> (notify) {</span>
<span class="line" id="L272"> .one => <span class="tok-number">1</span>,</span>
<span class="line" id="L273"> .all => wakeable,</span>
<span class="line" id="L274"> };</span>
<span class="line" id="L275"></span>
<span class="line" id="L276"> <span class="tok-comment">// Reserve the amount of waiters to wake by incrementing the signals count.</span>
</span>
<span class="line" id="L277"> <span class="tok-comment">// Release barrier ensures code before the wake() happens before the signal it posted and consumed by the wait() threads.</span>
</span>
<span class="line" id="L278"> <span class="tok-kw">const</span> new_state = state + (one_signal * to_wake);</span>
<span class="line" id="L279"> state = self.state.tryCompareAndSwap(state, new_state, .Release, .Monotonic) <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L280"> <span class="tok-comment">// Wake up the waiting threads we reserved above by changing the epoch value.</span>
</span>
<span class="line" id="L281"> <span class="tok-comment">// NOTE: a waiting thread could miss a wake up if *exactly* ((1<<32)-1) wake()s happen between it observing the epoch and sleeping on it.</span>
</span>
<span class="line" id="L282"> <span class="tok-comment">// This is very unlikely due to how many precise amount of Futex.wake() calls that would be between the waiting thread's potential preemption.</span>
</span>
<span class="line" id="L283"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L284"> <span class="tok-comment">// Release barrier ensures the signal being added to the state happens before the epoch is changed.</span>
</span>
<span class="line" id="L285"> <span class="tok-comment">// If not, the waiting thread could potentially deadlock from missing both the state and epoch change:</span>
</span>
<span class="line" id="L286"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L287"> <span class="tok-comment">// - T2: UPDATE(&epoch, 1) (reordered before the state change)</span>
</span>
<span class="line" id="L288"> <span class="tok-comment">// - T1: e = LOAD(&epoch)</span>
</span>
<span class="line" id="L289"> <span class="tok-comment">// - T1: s = LOAD(&state)</span>
</span>
<span class="line" id="L290"> <span class="tok-comment">// - T2: UPDATE(&state, signal) + FUTEX_WAKE(&epoch)</span>
</span>
<span class="line" id="L291"> <span class="tok-comment">// - T1: s & signals == 0 -> FUTEX_WAIT(&epoch, e) (missed both epoch change and state change)</span>
</span>
<span class="line" id="L292"> _ = self.epoch.fetchAdd(<span class="tok-number">1</span>, .Release);</span>
<span class="line" id="L293"> Futex.wake(&self.epoch, to_wake);</span>
<span class="line" id="L294"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L295"> };</span>
<span class="line" id="L296"> }</span>
<span class="line" id="L297"> }</span>
<span class="line" id="L298">};</span>
<span class="line" id="L299"></span>
<span class="line" id="L300"><span class="tok-kw">test</span> <span class="tok-str">"Condition - smoke test"</span> {</span>
<span class="line" id="L301"> <span class="tok-kw">var</span> mutex = Mutex{};</span>
<span class="line" id="L302"> <span class="tok-kw">var</span> cond = Condition{};</span>
<span class="line" id="L303"></span>
<span class="line" id="L304"> <span class="tok-comment">// Try to wake outside the mutex</span>
</span>
<span class="line" id="L305"> <span class="tok-kw">defer</span> cond.signal();</span>
<span class="line" id="L306"> <span class="tok-kw">defer</span> cond.broadcast();</span>
<span class="line" id="L307"></span>
<span class="line" id="L308"> mutex.lock();</span>
<span class="line" id="L309"> <span class="tok-kw">defer</span> mutex.unlock();</span>
<span class="line" id="L310"></span>
<span class="line" id="L311"> <span class="tok-comment">// Try to wait with a timeout (should not deadlock)</span>
</span>
<span class="line" id="L312"> <span class="tok-kw">try</span> testing.expectError(<span class="tok-kw">error</span>.Timeout, cond.timedWait(&mutex, <span class="tok-number">0</span>));</span>
<span class="line" id="L313"> <span class="tok-kw">try</span> testing.expectError(<span class="tok-kw">error</span>.Timeout, cond.timedWait(&mutex, std.time.ns_per_ms));</span>
<span class="line" id="L314"></span>
<span class="line" id="L315"> <span class="tok-comment">// Try to wake inside the mutex.</span>
</span>
<span class="line" id="L316"> cond.signal();</span>
<span class="line" id="L317"> cond.broadcast();</span>
<span class="line" id="L318">}</span>
<span class="line" id="L319"></span>
<span class="line" id="L320"><span class="tok-comment">// Inspired from: https://github.com/Amanieu/parking_lot/pull/129</span>
</span>
<span class="line" id="L321"><span class="tok-kw">test</span> <span class="tok-str">"Condition - wait and signal"</span> {</span>
<span class="line" id="L322"> <span class="tok-comment">// This test requires spawning threads</span>
</span>
<span class="line" id="L323"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L324"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L325"> }</span>
<span class="line" id="L326"></span>
<span class="line" id="L327"> <span class="tok-kw">const</span> num_threads = <span class="tok-number">4</span>;</span>
<span class="line" id="L328"></span>
<span class="line" id="L329"> <span class="tok-kw">const</span> MultiWait = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L330"> mutex: Mutex = .{},</span>
<span class="line" id="L331"> cond: Condition = .{},</span>
<span class="line" id="L332"> threads: [num_threads]std.Thread = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L333"> spawn_count: std.math.IntFittingRange(<span class="tok-number">0</span>, num_threads) = <span class="tok-number">0</span>,</span>
<span class="line" id="L334"></span>
<span class="line" id="L335"> <span class="tok-kw">fn</span> <span class="tok-fn">run</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L336"> self.mutex.lock();</span>
<span class="line" id="L337"> <span class="tok-kw">defer</span> self.mutex.unlock();</span>
<span class="line" id="L338"> self.spawn_count += <span class="tok-number">1</span>;</span>
<span class="line" id="L339"></span>
<span class="line" id="L340"> self.cond.wait(&self.mutex);</span>
<span class="line" id="L341"> self.cond.timedWait(&self.mutex, std.time.ns_per_ms) <span class="tok-kw">catch</span> {};</span>
<span class="line" id="L342"> self.cond.signal();</span>
<span class="line" id="L343"> }</span>
<span class="line" id="L344"> };</span>
<span class="line" id="L345"></span>
<span class="line" id="L346"> <span class="tok-kw">var</span> multi_wait = MultiWait{};</span>
<span class="line" id="L347"> <span class="tok-kw">for</span> (&multi_wait.threads) |*t| {</span>
<span class="line" id="L348"> t.* = <span class="tok-kw">try</span> std.Thread.spawn(.{}, MultiWait.run, .{&multi_wait});</span>
<span class="line" id="L349"> }</span>
<span class="line" id="L350"></span>
<span class="line" id="L351"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L352"> std.time.sleep(<span class="tok-number">100</span> * std.time.ns_per_ms);</span>
<span class="line" id="L353"></span>
<span class="line" id="L354"> multi_wait.mutex.lock();</span>
<span class="line" id="L355"> <span class="tok-kw">defer</span> multi_wait.mutex.unlock();</span>
<span class="line" id="L356"> <span class="tok-comment">// Make sure all of the threads have finished spawning to avoid a deadlock.</span>
</span>
<span class="line" id="L357"> <span class="tok-kw">if</span> (multi_wait.spawn_count == num_threads) <span class="tok-kw">break</span>;</span>
<span class="line" id="L358"> }</span>
<span class="line" id="L359"></span>
<span class="line" id="L360"> multi_wait.cond.signal();</span>
<span class="line" id="L361"> <span class="tok-kw">for</span> (multi_wait.threads) |t| {</span>
<span class="line" id="L362"> t.join();</span>
<span class="line" id="L363"> }</span>
<span class="line" id="L364">}</span>
<span class="line" id="L365"></span>
<span class="line" id="L366"><span class="tok-kw">test</span> <span class="tok-str">"Condition - signal"</span> {</span>
<span class="line" id="L367"> <span class="tok-comment">// This test requires spawning threads</span>
</span>
<span class="line" id="L368"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L369"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L370"> }</span>
<span class="line" id="L371"></span>
<span class="line" id="L372"> <span class="tok-kw">const</span> num_threads = <span class="tok-number">4</span>;</span>
<span class="line" id="L373"></span>
<span class="line" id="L374"> <span class="tok-kw">const</span> SignalTest = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L375"> mutex: Mutex = .{},</span>
<span class="line" id="L376"> cond: Condition = .{},</span>
<span class="line" id="L377"> notified: <span class="tok-type">bool</span> = <span class="tok-null">false</span>,</span>
<span class="line" id="L378"> threads: [num_threads]std.Thread = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L379"> spawn_count: std.math.IntFittingRange(<span class="tok-number">0</span>, num_threads) = <span class="tok-number">0</span>,</span>
<span class="line" id="L380"></span>
<span class="line" id="L381"> <span class="tok-kw">fn</span> <span class="tok-fn">run</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L382"> self.mutex.lock();</span>
<span class="line" id="L383"> <span class="tok-kw">defer</span> self.mutex.unlock();</span>
<span class="line" id="L384"> self.spawn_count += <span class="tok-number">1</span>;</span>
<span class="line" id="L385"></span>
<span class="line" id="L386"> <span class="tok-comment">// Use timedWait() a few times before using wait()</span>
</span>
<span class="line" id="L387"> <span class="tok-comment">// to test multiple threads timing out frequently.</span>
</span>
<span class="line" id="L388"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L389"> <span class="tok-kw">while</span> (!self.notified) : (i +%= <span class="tok-number">1</span>) {</span>
<span class="line" id="L390"> <span class="tok-kw">if</span> (i < <span class="tok-number">5</span>) {</span>
<span class="line" id="L391"> self.cond.timedWait(&self.mutex, <span class="tok-number">1</span>) <span class="tok-kw">catch</span> {};</span>
<span class="line" id="L392"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L393"> self.cond.wait(&self.mutex);</span>
<span class="line" id="L394"> }</span>
<span class="line" id="L395"> }</span>
<span class="line" id="L396"></span>
<span class="line" id="L397"> <span class="tok-comment">// Once we received the signal, notify another thread (inside the lock).</span>
</span>
<span class="line" id="L398"> assert(self.notified);</span>
<span class="line" id="L399"> self.cond.signal();</span>
<span class="line" id="L400"> }</span>
<span class="line" id="L401"> };</span>
<span class="line" id="L402"></span>
<span class="line" id="L403"> <span class="tok-kw">var</span> signal_test = SignalTest{};</span>
<span class="line" id="L404"> <span class="tok-kw">for</span> (&signal_test.threads) |*t| {</span>
<span class="line" id="L405"> t.* = <span class="tok-kw">try</span> std.Thread.spawn(.{}, SignalTest.run, .{&signal_test});</span>
<span class="line" id="L406"> }</span>
<span class="line" id="L407"></span>
<span class="line" id="L408"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L409"> std.time.sleep(<span class="tok-number">10</span> * std.time.ns_per_ms);</span>
<span class="line" id="L410"></span>
<span class="line" id="L411"> signal_test.mutex.lock();</span>
<span class="line" id="L412"> <span class="tok-kw">defer</span> signal_test.mutex.unlock();</span>
<span class="line" id="L413"> <span class="tok-comment">// Make sure at least one thread has finished spawning to avoid testing nothing.</span>
</span>
<span class="line" id="L414"> <span class="tok-kw">if</span> (signal_test.spawn_count > <span class="tok-number">0</span>) <span class="tok-kw">break</span>;</span>
<span class="line" id="L415"> }</span>
<span class="line" id="L416"></span>
<span class="line" id="L417"> {</span>
<span class="line" id="L418"> <span class="tok-comment">// Wake up one of them (outside the lock) after setting notified=true.</span>
</span>
<span class="line" id="L419"> <span class="tok-kw">defer</span> signal_test.cond.signal();</span>
<span class="line" id="L420"></span>
<span class="line" id="L421"> signal_test.mutex.lock();</span>
<span class="line" id="L422"> <span class="tok-kw">defer</span> signal_test.mutex.unlock();</span>
<span class="line" id="L423"></span>
<span class="line" id="L424"> <span class="tok-kw">try</span> testing.expect(!signal_test.notified);</span>
<span class="line" id="L425"> signal_test.notified = <span class="tok-null">true</span>;</span>
<span class="line" id="L426"> }</span>
<span class="line" id="L427"></span>
<span class="line" id="L428"> <span class="tok-kw">for</span> (signal_test.threads) |t| {</span>
<span class="line" id="L429"> t.join();</span>
<span class="line" id="L430"> }</span>
<span class="line" id="L431">}</span>
<span class="line" id="L432"></span>
<span class="line" id="L433"><span class="tok-kw">test</span> <span class="tok-str">"Condition - multi signal"</span> {</span>
<span class="line" id="L434"> <span class="tok-comment">// This test requires spawning threads</span>
</span>
<span class="line" id="L435"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L436"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L437"> }</span>
<span class="line" id="L438"></span>
<span class="line" id="L439"> <span class="tok-kw">const</span> num_threads = <span class="tok-number">4</span>;</span>
<span class="line" id="L440"> <span class="tok-kw">const</span> num_iterations = <span class="tok-number">4</span>;</span>
<span class="line" id="L441"></span>
<span class="line" id="L442"> <span class="tok-kw">const</span> Paddle = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L443"> mutex: Mutex = .{},</span>
<span class="line" id="L444"> cond: Condition = .{},</span>
<span class="line" id="L445"> value: <span class="tok-type">u32</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L446"></span>
<span class="line" id="L447"> <span class="tok-kw">fn</span> <span class="tok-fn">hit</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L448"> <span class="tok-kw">defer</span> self.cond.signal();</span>
<span class="line" id="L449"></span>
<span class="line" id="L450"> self.mutex.lock();</span>
<span class="line" id="L451"> <span class="tok-kw">defer</span> self.mutex.unlock();</span>
<span class="line" id="L452"></span>
<span class="line" id="L453"> self.value += <span class="tok-number">1</span>;</span>
<span class="line" id="L454"> }</span>
<span class="line" id="L455"></span>
<span class="line" id="L456"> <span class="tok-kw">fn</span> <span class="tok-fn">run</span>(self: *<span class="tok-builtin">@This</span>(), hit_to: *<span class="tok-builtin">@This</span>()) !<span class="tok-type">void</span> {</span>
<span class="line" id="L457"> self.mutex.lock();</span>
<span class="line" id="L458"> <span class="tok-kw">defer</span> self.mutex.unlock();</span>
<span class="line" id="L459"></span>
<span class="line" id="L460"> <span class="tok-kw">var</span> current: <span class="tok-type">u32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L461"> <span class="tok-kw">while</span> (current < num_iterations) : (current += <span class="tok-number">1</span>) {</span>
<span class="line" id="L462"> <span class="tok-comment">// Wait for the value to change from hit()</span>
</span>
<span class="line" id="L463"> <span class="tok-kw">while</span> (self.value == current) {</span>
<span class="line" id="L464"> self.cond.wait(&self.mutex);</span>
<span class="line" id="L465"> }</span>
<span class="line" id="L466"></span>
<span class="line" id="L467"> <span class="tok-comment">// hit the next paddle</span>
</span>
<span class="line" id="L468"> <span class="tok-kw">try</span> testing.expectEqual(self.value, current + <span class="tok-number">1</span>);</span>
<span class="line" id="L469"> hit_to.hit();</span>
<span class="line" id="L470"> }</span>
<span class="line" id="L471"> }</span>
<span class="line" id="L472"> };</span>
<span class="line" id="L473"></span>
<span class="line" id="L474"> <span class="tok-kw">var</span> paddles = [_]Paddle{.{}} ** num_threads;</span>
<span class="line" id="L475"> <span class="tok-kw">var</span> threads = [_]std.Thread{<span class="tok-null">undefined</span>} ** num_threads;</span>
<span class="line" id="L476"></span>
<span class="line" id="L477"> <span class="tok-comment">// Create a circle of paddles which hit each other</span>
</span>
<span class="line" id="L478"> <span class="tok-kw">for</span> (&threads, <span class="tok-number">0</span>..) |*t, i| {</span>
<span class="line" id="L479"> <span class="tok-kw">const</span> paddle = &paddles[i];</span>
<span class="line" id="L480"> <span class="tok-kw">const</span> hit_to = &paddles[(i + <span class="tok-number">1</span>) % paddles.len];</span>
<span class="line" id="L481"> t.* = <span class="tok-kw">try</span> std.Thread.spawn(.{}, Paddle.run, .{ paddle, hit_to });</span>
<span class="line" id="L482"> }</span>
<span class="line" id="L483"></span>
<span class="line" id="L484"> <span class="tok-comment">// Hit the first paddle and wait for them all to complete by hitting each other for num_iterations.</span>
</span>
<span class="line" id="L485"> paddles[<span class="tok-number">0</span>].hit();</span>
<span class="line" id="L486"> <span class="tok-kw">for</span> (threads) |t| t.join();</span>
<span class="line" id="L487"></span>
<span class="line" id="L488"> <span class="tok-comment">// The first paddle will be hit one last time by the last paddle.</span>
</span>
<span class="line" id="L489"> <span class="tok-kw">for</span> (paddles, <span class="tok-number">0</span>..) |p, i| {</span>
<span class="line" id="L490"> <span class="tok-kw">const</span> expected = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, num_iterations) + <span class="tok-builtin">@intFromBool</span>(i == <span class="tok-number">0</span>);</span>
<span class="line" id="L491"> <span class="tok-kw">try</span> testing.expectEqual(p.value, expected);</span>
<span class="line" id="L492"> }</span>
<span class="line" id="L493">}</span>
<span class="line" id="L494"></span>
<span class="line" id="L495"><span class="tok-kw">test</span> <span class="tok-str">"Condition - broadcasting"</span> {</span>
<span class="line" id="L496"> <span class="tok-comment">// This test requires spawning threads</span>
</span>
<span class="line" id="L497"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L498"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L499"> }</span>
<span class="line" id="L500"></span>
<span class="line" id="L501"> <span class="tok-kw">const</span> num_threads = <span class="tok-number">10</span>;</span>
<span class="line" id="L502"></span>
<span class="line" id="L503"> <span class="tok-kw">const</span> BroadcastTest = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L504"> mutex: Mutex = .{},</span>
<span class="line" id="L505"> cond: Condition = .{},</span>
<span class="line" id="L506"> completed: Condition = .{},</span>
<span class="line" id="L507"> count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L508"> threads: [num_threads]std.Thread = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L509"></span>
<span class="line" id="L510"> <span class="tok-kw">fn</span> <span class="tok-fn">run</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L511"> self.mutex.lock();</span>
<span class="line" id="L512"> <span class="tok-kw">defer</span> self.mutex.unlock();</span>
<span class="line" id="L513"></span>
<span class="line" id="L514"> <span class="tok-comment">// The last broadcast thread to start tells the main test thread it's completed.</span>
</span>
<span class="line" id="L515"> self.count += <span class="tok-number">1</span>;</span>
<span class="line" id="L516"> <span class="tok-kw">if</span> (self.count == num_threads) {</span>
<span class="line" id="L517"> self.completed.signal();</span>
<span class="line" id="L518"> }</span>
<span class="line" id="L519"></span>
<span class="line" id="L520"> <span class="tok-comment">// Waits for the count to reach zero after the main test thread observes it at num_threads.</span>
</span>
<span class="line" id="L521"> <span class="tok-comment">// Tries to use timedWait() a bit before falling back to wait() to test multiple threads timing out.</span>
</span>
<span class="line" id="L522"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L523"> <span class="tok-kw">while</span> (self.count != <span class="tok-number">0</span>) : (i +%= <span class="tok-number">1</span>) {</span>
<span class="line" id="L524"> <span class="tok-kw">if</span> (i < <span class="tok-number">10</span>) {</span>
<span class="line" id="L525"> self.cond.timedWait(&self.mutex, <span class="tok-number">1</span>) <span class="tok-kw">catch</span> {};</span>
<span class="line" id="L526"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L527"> self.cond.wait(&self.mutex);</span>
<span class="line" id="L528"> }</span>
<span class="line" id="L529"> }</span>
<span class="line" id="L530"> }</span>
<span class="line" id="L531"> };</span>
<span class="line" id="L532"></span>
<span class="line" id="L533"> <span class="tok-kw">var</span> broadcast_test = BroadcastTest{};</span>
<span class="line" id="L534"> <span class="tok-kw">for</span> (&broadcast_test.threads) |*t| {</span>
<span class="line" id="L535"> t.* = <span class="tok-kw">try</span> std.Thread.spawn(.{}, BroadcastTest.run, .{&broadcast_test});</span>
<span class="line" id="L536"> }</span>
<span class="line" id="L537"></span>
<span class="line" id="L538"> {</span>
<span class="line" id="L539"> broadcast_test.mutex.lock();</span>
<span class="line" id="L540"> <span class="tok-kw">defer</span> broadcast_test.mutex.unlock();</span>
<span class="line" id="L541"></span>
<span class="line" id="L542"> <span class="tok-comment">// Wait for all the broadcast threads to spawn.</span>
</span>
<span class="line" id="L543"> <span class="tok-comment">// timedWait() to detect any potential deadlocks.</span>
</span>
<span class="line" id="L544"> <span class="tok-kw">while</span> (broadcast_test.count != num_threads) {</span>
<span class="line" id="L545"> broadcast_test.completed.timedWait(</span>
<span class="line" id="L546"> &broadcast_test.mutex,</span>
<span class="line" id="L547"> <span class="tok-number">1</span> * std.time.ns_per_s,</span>
<span class="line" id="L548"> ) <span class="tok-kw">catch</span> {};</span>
<span class="line" id="L549"> }</span>
<span class="line" id="L550"></span>
<span class="line" id="L551"> <span class="tok-comment">// Reset the counter and wake all the threads to exit.</span>
</span>
<span class="line" id="L552"> broadcast_test.count = <span class="tok-number">0</span>;</span>
<span class="line" id="L553"> broadcast_test.cond.broadcast();</span>
<span class="line" id="L554"> }</span>
<span class="line" id="L555"></span>
<span class="line" id="L556"> <span class="tok-kw">for</span> (broadcast_test.threads) |t| {</span>
<span class="line" id="L557"> t.join();</span>
<span class="line" id="L558"> }</span>
<span class="line" id="L559">}</span>
<span class="line" id="L560"></span>
<span class="line" id="L561"><span class="tok-kw">test</span> <span class="tok-str">"Condition - broadcasting - wake all threads"</span> {</span>
<span class="line" id="L562"> <span class="tok-comment">// Tests issue #12877</span>
</span>
<span class="line" id="L563"> <span class="tok-comment">// This test requires spawning threads</span>
</span>
<span class="line" id="L564"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L565"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L566"> }</span>
<span class="line" id="L567"></span>
<span class="line" id="L568"> <span class="tok-kw">var</span> num_runs: <span class="tok-type">usize</span> = <span class="tok-number">1</span>;</span>
<span class="line" id="L569"> <span class="tok-kw">const</span> num_threads = <span class="tok-number">10</span>;</span>
<span class="line" id="L570"></span>
<span class="line" id="L571"> <span class="tok-kw">while</span> (num_runs > <span class="tok-number">0</span>) : (num_runs -= <span class="tok-number">1</span>) {</span>
<span class="line" id="L572"> <span class="tok-kw">const</span> BroadcastTest = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L573"> mutex: Mutex = .{},</span>
<span class="line" id="L574"> cond: Condition = .{},</span>
<span class="line" id="L575"> completed: Condition = .{},</span>
<span class="line" id="L576"> count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L577"> thread_id_to_wake: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L578"> threads: [num_threads]std.Thread = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L579"> wakeups: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L580"></span>
<span class="line" id="L581"> <span class="tok-kw">fn</span> <span class="tok-fn">run</span>(self: *<span class="tok-builtin">@This</span>(), thread_id: <span class="tok-type">usize</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L582"> self.mutex.lock();</span>
<span class="line" id="L583"> <span class="tok-kw">defer</span> self.mutex.unlock();</span>
<span class="line" id="L584"></span>
<span class="line" id="L585"> <span class="tok-comment">// The last broadcast thread to start tells the main test thread it's completed.</span>
</span>
<span class="line" id="L586"> self.count += <span class="tok-number">1</span>;</span>
<span class="line" id="L587"> <span class="tok-kw">if</span> (self.count == num_threads) {</span>
<span class="line" id="L588"> self.completed.signal();</span>
<span class="line" id="L589"> }</span>
<span class="line" id="L590"></span>
<span class="line" id="L591"> <span class="tok-kw">while</span> (self.thread_id_to_wake != thread_id) {</span>
<span class="line" id="L592"> self.cond.timedWait(&self.mutex, <span class="tok-number">1</span> * std.time.ns_per_s) <span class="tok-kw">catch</span> {};</span>
<span class="line" id="L593"> self.wakeups += <span class="tok-number">1</span>;</span>
<span class="line" id="L594"> }</span>
<span class="line" id="L595"> <span class="tok-kw">if</span> (self.thread_id_to_wake <= num_threads) {</span>
<span class="line" id="L596"> <span class="tok-comment">// Signal next thread to wake up.</span>
</span>
<span class="line" id="L597"> self.thread_id_to_wake += <span class="tok-number">1</span>;</span>
<span class="line" id="L598"> self.cond.broadcast();</span>
<span class="line" id="L599"> }</span>
<span class="line" id="L600"> }</span>
<span class="line" id="L601"> };</span>
<span class="line" id="L602"></span>
<span class="line" id="L603"> <span class="tok-kw">var</span> broadcast_test = BroadcastTest{};</span>
<span class="line" id="L604"> <span class="tok-kw">var</span> thread_id: <span class="tok-type">usize</span> = <span class="tok-number">1</span>;</span>
<span class="line" id="L605"> <span class="tok-kw">for</span> (&broadcast_test.threads) |*t| {</span>
<span class="line" id="L606"> t.* = <span class="tok-kw">try</span> std.Thread.spawn(.{}, BroadcastTest.run, .{ &broadcast_test, thread_id });</span>
<span class="line" id="L607"> thread_id += <span class="tok-number">1</span>;</span>
<span class="line" id="L608"> }</span>
<span class="line" id="L609"></span>
<span class="line" id="L610"> {</span>
<span class="line" id="L611"> broadcast_test.mutex.lock();</span>
<span class="line" id="L612"> <span class="tok-kw">defer</span> broadcast_test.mutex.unlock();</span>
<span class="line" id="L613"></span>
<span class="line" id="L614"> <span class="tok-comment">// Wait for all the broadcast threads to spawn.</span>
</span>
<span class="line" id="L615"> <span class="tok-comment">// timedWait() to detect any potential deadlocks.</span>
</span>
<span class="line" id="L616"> <span class="tok-kw">while</span> (broadcast_test.count != num_threads) {</span>
<span class="line" id="L617"> broadcast_test.completed.timedWait(</span>
<span class="line" id="L618"> &broadcast_test.mutex,</span>
<span class="line" id="L619"> <span class="tok-number">1</span> * std.time.ns_per_s,</span>
<span class="line" id="L620"> ) <span class="tok-kw">catch</span> {};</span>
<span class="line" id="L621"> }</span>
<span class="line" id="L622"></span>
<span class="line" id="L623"> <span class="tok-comment">// Signal thread 1 to wake up</span>
</span>
<span class="line" id="L624"> broadcast_test.thread_id_to_wake = <span class="tok-number">1</span>;</span>
<span class="line" id="L625"> broadcast_test.cond.broadcast();</span>
<span class="line" id="L626"> }</span>
<span class="line" id="L627"></span>
<span class="line" id="L628"> <span class="tok-kw">for</span> (broadcast_test.threads) |t| {</span>
<span class="line" id="L629"> t.join();</span>
<span class="line" id="L630"> }</span>
<span class="line" id="L631"> }</span>
<span class="line" id="L632">}</span>
<span class="line" id="L633"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> Pool = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L4"><span class="tok-kw">const</span> WaitGroup = <span class="tok-builtin">@import</span>(<span class="tok-str">"WaitGroup.zig"</span>);</span>
<span class="line" id="L5"></span>
<span class="line" id="L6">mutex: std.Thread.Mutex = .{},</span>
<span class="line" id="L7">cond: std.Thread.Condition = .{},</span>
<span class="line" id="L8">run_queue: RunQueue = .{},</span>
<span class="line" id="L9">is_running: <span class="tok-type">bool</span> = <span class="tok-null">true</span>,</span>
<span class="line" id="L10">allocator: std.mem.Allocator,</span>
<span class="line" id="L11">threads: []std.Thread,</span>
<span class="line" id="L12"></span>
<span class="line" id="L13"><span class="tok-kw">const</span> RunQueue = std.SinglyLinkedList(Runnable);</span>
<span class="line" id="L14"><span class="tok-kw">const</span> Runnable = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L15"> runFn: RunProto,</span>
<span class="line" id="L16">};</span>
<span class="line" id="L17"></span>
<span class="line" id="L18"><span class="tok-kw">const</span> RunProto = *<span class="tok-kw">const</span> <span class="tok-kw">fn</span> (*Runnable) <span class="tok-type">void</span>;</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Options = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L21"> allocator: std.mem.Allocator,</span>
<span class="line" id="L22"> n_jobs: ?<span class="tok-type">u32</span> = <span class="tok-null">null</span>,</span>
<span class="line" id="L23">};</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(pool: *Pool, options: Options) !<span class="tok-type">void</span> {</span>
<span class="line" id="L26"> <span class="tok-kw">const</span> allocator = options.allocator;</span>
<span class="line" id="L27"></span>
<span class="line" id="L28"> pool.* = .{</span>
<span class="line" id="L29"> .allocator = allocator,</span>
<span class="line" id="L30"> .threads = &[_]std.Thread{},</span>
<span class="line" id="L31"> };</span>
<span class="line" id="L32"></span>
<span class="line" id="L33"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L34"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L35"> }</span>
<span class="line" id="L36"></span>
<span class="line" id="L37"> <span class="tok-kw">const</span> thread_count = options.n_jobs <span class="tok-kw">orelse</span> <span class="tok-builtin">@max</span>(<span class="tok-number">1</span>, std.Thread.getCpuCount() <span class="tok-kw">catch</span> <span class="tok-number">1</span>);</span>
<span class="line" id="L38"> pool.threads = <span class="tok-kw">try</span> allocator.alloc(std.Thread, thread_count);</span>
<span class="line" id="L39"> <span class="tok-kw">errdefer</span> allocator.free(pool.threads);</span>
<span class="line" id="L40"></span>
<span class="line" id="L41"> <span class="tok-comment">// kill and join any threads we spawned previously on error.</span>
</span>
<span class="line" id="L42"> <span class="tok-kw">var</span> spawned: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L43"> <span class="tok-kw">errdefer</span> pool.join(spawned);</span>
<span class="line" id="L44"></span>
<span class="line" id="L45"> <span class="tok-kw">for</span> (pool.threads) |*thread| {</span>
<span class="line" id="L46"> thread.* = <span class="tok-kw">try</span> std.Thread.spawn(.{}, worker, .{pool});</span>
<span class="line" id="L47"> spawned += <span class="tok-number">1</span>;</span>
<span class="line" id="L48"> }</span>
<span class="line" id="L49">}</span>
<span class="line" id="L50"></span>
<span class="line" id="L51"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(pool: *Pool) <span class="tok-type">void</span> {</span>
<span class="line" id="L52"> pool.join(pool.threads.len); <span class="tok-comment">// kill and join all threads.</span>
</span>
<span class="line" id="L53"> pool.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L54">}</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"><span class="tok-kw">fn</span> <span class="tok-fn">join</span>(pool: *Pool, spawned: <span class="tok-type">usize</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L57"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L58"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L59"> }</span>
<span class="line" id="L60"></span>
<span class="line" id="L61"> {</span>
<span class="line" id="L62"> pool.mutex.lock();</span>
<span class="line" id="L63"> <span class="tok-kw">defer</span> pool.mutex.unlock();</span>
<span class="line" id="L64"></span>
<span class="line" id="L65"> <span class="tok-comment">// ensure future worker threads exit the dequeue loop</span>
</span>
<span class="line" id="L66"> pool.is_running = <span class="tok-null">false</span>;</span>
<span class="line" id="L67"> }</span>
<span class="line" id="L68"></span>
<span class="line" id="L69"> <span class="tok-comment">// wake up any sleeping threads (this can be done outside the mutex)</span>
</span>
<span class="line" id="L70"> <span class="tok-comment">// then wait for all the threads we know are spawned to complete.</span>
</span>
<span class="line" id="L71"> pool.cond.broadcast();</span>
<span class="line" id="L72"> <span class="tok-kw">for</span> (pool.threads[<span class="tok-number">0</span>..spawned]) |thread| {</span>
<span class="line" id="L73"> thread.join();</span>
<span class="line" id="L74"> }</span>
<span class="line" id="L75"></span>
<span class="line" id="L76"> pool.allocator.free(pool.threads);</span>
<span class="line" id="L77">}</span>
<span class="line" id="L78"></span>
<span class="line" id="L79"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">spawn</span>(pool: *Pool, <span class="tok-kw">comptime</span> func: <span class="tok-kw">anytype</span>, args: <span class="tok-kw">anytype</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L80"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L81"> <span class="tok-builtin">@call</span>(.auto, func, args);</span>
<span class="line" id="L82"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L83"> }</span>
<span class="line" id="L84"></span>
<span class="line" id="L85"> <span class="tok-kw">const</span> Args = <span class="tok-builtin">@TypeOf</span>(args);</span>
<span class="line" id="L86"> <span class="tok-kw">const</span> Closure = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L87"> arguments: Args,</span>
<span class="line" id="L88"> pool: *Pool,</span>
<span class="line" id="L89"> run_node: RunQueue.Node = .{ .data = .{ .runFn = runFn } },</span>
<span class="line" id="L90"></span>
<span class="line" id="L91"> <span class="tok-kw">fn</span> <span class="tok-fn">runFn</span>(runnable: *Runnable) <span class="tok-type">void</span> {</span>
<span class="line" id="L92"> <span class="tok-kw">const</span> run_node = <span class="tok-builtin">@fieldParentPtr</span>(RunQueue.Node, <span class="tok-str">"data"</span>, runnable);</span>
<span class="line" id="L93"> <span class="tok-kw">const</span> closure = <span class="tok-builtin">@fieldParentPtr</span>(<span class="tok-builtin">@This</span>(), <span class="tok-str">"run_node"</span>, run_node);</span>
<span class="line" id="L94"> <span class="tok-builtin">@call</span>(.auto, func, closure.arguments);</span>
<span class="line" id="L95"></span>
<span class="line" id="L96"> <span class="tok-comment">// The thread pool's allocator is protected by the mutex.</span>
</span>
<span class="line" id="L97"> <span class="tok-kw">const</span> mutex = &closure.pool.mutex;</span>
<span class="line" id="L98"> mutex.lock();</span>
<span class="line" id="L99"> <span class="tok-kw">defer</span> mutex.unlock();</span>
<span class="line" id="L100"></span>
<span class="line" id="L101"> closure.pool.allocator.destroy(closure);</span>
<span class="line" id="L102"> }</span>
<span class="line" id="L103"> };</span>
<span class="line" id="L104"></span>
<span class="line" id="L105"> {</span>
<span class="line" id="L106"> pool.mutex.lock();</span>
<span class="line" id="L107"> <span class="tok-kw">defer</span> pool.mutex.unlock();</span>
<span class="line" id="L108"></span>
<span class="line" id="L109"> <span class="tok-kw">const</span> closure = <span class="tok-kw">try</span> pool.allocator.create(Closure);</span>
<span class="line" id="L110"> closure.* = .{</span>
<span class="line" id="L111"> .arguments = args,</span>
<span class="line" id="L112"> .pool = pool,</span>
<span class="line" id="L113"> };</span>
<span class="line" id="L114"></span>
<span class="line" id="L115"> pool.run_queue.prepend(&closure.run_node);</span>
<span class="line" id="L116"> }</span>
<span class="line" id="L117"></span>
<span class="line" id="L118"> <span class="tok-comment">// Notify waiting threads outside the lock to try and keep the critical section small.</span>
</span>
<span class="line" id="L119"> pool.cond.signal();</span>
<span class="line" id="L120">}</span>
<span class="line" id="L121"></span>
<span class="line" id="L122"><span class="tok-kw">fn</span> <span class="tok-fn">worker</span>(pool: *Pool) <span class="tok-type">void</span> {</span>
<span class="line" id="L123"> pool.mutex.lock();</span>
<span class="line" id="L124"> <span class="tok-kw">defer</span> pool.mutex.unlock();</span>
<span class="line" id="L125"></span>
<span class="line" id="L126"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L127"> <span class="tok-kw">while</span> (pool.run_queue.popFirst()) |run_node| {</span>
<span class="line" id="L128"> <span class="tok-comment">// Temporarily unlock the mutex in order to execute the run_node</span>
</span>
<span class="line" id="L129"> pool.mutex.unlock();</span>
<span class="line" id="L130"> <span class="tok-kw">defer</span> pool.mutex.lock();</span>
<span class="line" id="L131"></span>
<span class="line" id="L132"> <span class="tok-kw">const</span> runFn = run_node.data.runFn;</span>
<span class="line" id="L133"> runFn(&run_node.data);</span>
<span class="line" id="L134"> }</span>
<span class="line" id="L135"></span>
<span class="line" id="L136"> <span class="tok-comment">// Stop executing instead of waiting if the thread pool is no longer running.</span>
</span>
<span class="line" id="L137"> <span class="tok-kw">if</span> (pool.is_running) {</span>
<span class="line" id="L138"> pool.cond.wait(&pool.mutex);</span>
<span class="line" id="L139"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L140"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L141"> }</span>
<span class="line" id="L142"> }</span>
<span class="line" id="L143">}</span>
<span class="line" id="L144"></span>
<span class="line" id="L145"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">waitAndWork</span>(pool: *Pool, wait_group: *WaitGroup) <span class="tok-type">void</span> {</span>
<span class="line" id="L146"> <span class="tok-kw">while</span> (!wait_group.isDone()) {</span>
<span class="line" id="L147"> <span class="tok-kw">if</span> (blk: {</span>
<span class="line" id="L148"> pool.mutex.lock();</span>
<span class="line" id="L149"> <span class="tok-kw">defer</span> pool.mutex.unlock();</span>
<span class="line" id="L150"> <span class="tok-kw">break</span> :blk pool.run_queue.popFirst();</span>
<span class="line" id="L151"> }) |run_node| {</span>
<span class="line" id="L152"> run_node.data.runFn(&run_node.data);</span>
<span class="line" id="L153"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L154"> }</span>
<span class="line" id="L155"></span>
<span class="line" id="L156"> wait_group.wait();</span>
<span class="line" id="L157"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L158"> }</span>
<span class="line" id="L159">}</span>
<span class="line" id="L160"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/Thread/ResetEvent.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! ResetEvent is a thread-safe bool which can be set to true/false ("set"/"unset").</span></span>
<span class="line" id="L2"><span class="tok-comment">//! It can also block threads until the "bool" is set with cancellation via timed waits.</span></span>
<span class="line" id="L3"><span class="tok-comment">//! ResetEvent can be statically initialized and is at most `@sizeOf(u64)` large.</span></span>
<span class="line" id="L4"></span>
<span class="line" id="L5"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L6"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L7"><span class="tok-kw">const</span> ResetEvent = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L8"></span>
<span class="line" id="L9"><span class="tok-kw">const</span> os = std.os;</span>
<span class="line" id="L10"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L11"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L12"><span class="tok-kw">const</span> Atomic = std.atomic.Atomic;</span>
<span class="line" id="L13"><span class="tok-kw">const</span> Futex = std.Thread.Futex;</span>
<span class="line" id="L14"></span>
<span class="line" id="L15">impl: Impl = .{},</span>
<span class="line" id="L16"></span>
<span class="line" id="L17"><span class="tok-comment">/// Returns if the ResetEvent was set().</span></span>
<span class="line" id="L18"><span class="tok-comment">/// Once reset() is called, this returns false until the next set().</span></span>
<span class="line" id="L19"><span class="tok-comment">/// The memory accesses before the set() can be said to happen before isSet() returns true.</span></span>
<span class="line" id="L20"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isSet</span>(self: *<span class="tok-kw">const</span> ResetEvent) <span class="tok-type">bool</span> {</span>
<span class="line" id="L21"> <span class="tok-kw">return</span> self.impl.isSet();</span>
<span class="line" id="L22">}</span>
<span class="line" id="L23"></span>
<span class="line" id="L24"><span class="tok-comment">/// Block's the callers thread until the ResetEvent is set().</span></span>
<span class="line" id="L25"><span class="tok-comment">/// This is effectively a more efficient version of `while (!isSet()) {}`.</span></span>
<span class="line" id="L26"><span class="tok-comment">/// The memory accesses before the set() can be said to happen before wait() returns.</span></span>
<span class="line" id="L27"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(self: *ResetEvent) <span class="tok-type">void</span> {</span>
<span class="line" id="L28"> self.impl.wait(<span class="tok-null">null</span>) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L29"> <span class="tok-kw">error</span>.Timeout => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// no timeout provided so we shouldn't have timed-out</span>
</span>
<span class="line" id="L30"> };</span>
<span class="line" id="L31">}</span>
<span class="line" id="L32"></span>
<span class="line" id="L33"><span class="tok-comment">/// Block's the callers thread until the ResetEvent is set(), or until the corresponding timeout expires.</span></span>
<span class="line" id="L34"><span class="tok-comment">/// If the timeout expires before the ResetEvent is set, `error.Timeout` is returned.</span></span>
<span class="line" id="L35"><span class="tok-comment">/// This is effectively a more efficient version of `while (!isSet()) {}`.</span></span>
<span class="line" id="L36"><span class="tok-comment">/// The memory accesses before the set() can be said to happen before timedWait() returns without error.</span></span>
<span class="line" id="L37"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">timedWait</span>(self: *ResetEvent, timeout_ns: <span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L38"> <span class="tok-kw">return</span> self.impl.wait(timeout_ns);</span>
<span class="line" id="L39">}</span>
<span class="line" id="L40"></span>
<span class="line" id="L41"><span class="tok-comment">/// Marks the ResetEvent as "set" and unblocks any threads in `wait()` or `timedWait()` to observe the new state.</span></span>
<span class="line" id="L42"><span class="tok-comment">/// The ResetEvent says "set" until reset() is called, making future set() calls do nothing semantically.</span></span>
<span class="line" id="L43"><span class="tok-comment">/// The memory accesses before set() can be said to happen before isSet() returns true or wait()/timedWait() return successfully.</span></span>
<span class="line" id="L44"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">set</span>(self: *ResetEvent) <span class="tok-type">void</span> {</span>
<span class="line" id="L45"> self.impl.set();</span>
<span class="line" id="L46">}</span>
<span class="line" id="L47"></span>
<span class="line" id="L48"><span class="tok-comment">/// Unmarks the ResetEvent from its "set" state if set() was called previously.</span></span>
<span class="line" id="L49"><span class="tok-comment">/// It is undefined behavior is reset() is called while threads are blocked in wait() or timedWait().</span></span>
<span class="line" id="L50"><span class="tok-comment">/// Concurrent calls to set(), isSet() and reset() are allowed.</span></span>
<span class="line" id="L51"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reset</span>(self: *ResetEvent) <span class="tok-type">void</span> {</span>
<span class="line" id="L52"> self.impl.reset();</span>
<span class="line" id="L53">}</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"><span class="tok-kw">const</span> Impl = <span class="tok-kw">if</span> (builtin.single_threaded)</span>
<span class="line" id="L56"> SingleThreadedImpl</span>
<span class="line" id="L57"><span class="tok-kw">else</span></span>
<span class="line" id="L58"> FutexImpl;</span>
<span class="line" id="L59"></span>
<span class="line" id="L60"><span class="tok-kw">const</span> SingleThreadedImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L61"> is_set: <span class="tok-type">bool</span> = <span class="tok-null">false</span>,</span>
<span class="line" id="L62"></span>
<span class="line" id="L63"> <span class="tok-kw">fn</span> <span class="tok-fn">isSet</span>(self: *<span class="tok-kw">const</span> Impl) <span class="tok-type">bool</span> {</span>
<span class="line" id="L64"> <span class="tok-kw">return</span> self.is_set;</span>
<span class="line" id="L65"> }</span>
<span class="line" id="L66"></span>
<span class="line" id="L67"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(self: *Impl, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L68"> <span class="tok-kw">if</span> (self.isSet()) {</span>
<span class="line" id="L69"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L70"> }</span>
<span class="line" id="L71"></span>
<span class="line" id="L72"> <span class="tok-comment">// There are no other threads to wake us up.</span>
</span>
<span class="line" id="L73"> <span class="tok-comment">// So if we wait without a timeout we would never wake up.</span>
</span>
<span class="line" id="L74"> <span class="tok-kw">const</span> timeout_ns = timeout <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L75"> <span class="tok-kw">unreachable</span>; <span class="tok-comment">// deadlock detected</span>
</span>
<span class="line" id="L76"> };</span>
<span class="line" id="L77"></span>
<span class="line" id="L78"> std.time.sleep(timeout_ns);</span>
<span class="line" id="L79"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Timeout;</span>
<span class="line" id="L80"> }</span>
<span class="line" id="L81"></span>
<span class="line" id="L82"> <span class="tok-kw">fn</span> <span class="tok-fn">set</span>(self: *Impl) <span class="tok-type">void</span> {</span>
<span class="line" id="L83"> self.is_set = <span class="tok-null">true</span>;</span>
<span class="line" id="L84"> }</span>
<span class="line" id="L85"></span>
<span class="line" id="L86"> <span class="tok-kw">fn</span> <span class="tok-fn">reset</span>(self: *Impl) <span class="tok-type">void</span> {</span>
<span class="line" id="L87"> self.is_set = <span class="tok-null">false</span>;</span>
<span class="line" id="L88"> }</span>
<span class="line" id="L89">};</span>
<span class="line" id="L90"></span>
<span class="line" id="L91"><span class="tok-kw">const</span> FutexImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L92"> state: Atomic(<span class="tok-type">u32</span>) = Atomic(<span class="tok-type">u32</span>).init(unset),</span>
<span class="line" id="L93"></span>
<span class="line" id="L94"> <span class="tok-kw">const</span> unset = <span class="tok-number">0</span>;</span>
<span class="line" id="L95"> <span class="tok-kw">const</span> waiting = <span class="tok-number">1</span>;</span>
<span class="line" id="L96"> <span class="tok-kw">const</span> is_set = <span class="tok-number">2</span>;</span>
<span class="line" id="L97"></span>
<span class="line" id="L98"> <span class="tok-kw">fn</span> <span class="tok-fn">isSet</span>(self: *<span class="tok-kw">const</span> Impl) <span class="tok-type">bool</span> {</span>
<span class="line" id="L99"> <span class="tok-comment">// Acquire barrier ensures memory accesses before set() happen before we return true.</span>
</span>
<span class="line" id="L100"> <span class="tok-kw">return</span> self.state.load(.Acquire) == is_set;</span>
<span class="line" id="L101"> }</span>
<span class="line" id="L102"></span>
<span class="line" id="L103"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(self: *Impl, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L104"> <span class="tok-comment">// Outline the slow path to allow isSet() to be inlined</span>
</span>
<span class="line" id="L105"> <span class="tok-kw">if</span> (!self.isSet()) {</span>
<span class="line" id="L106"> <span class="tok-kw">return</span> self.waitUntilSet(timeout);</span>
<span class="line" id="L107"> }</span>
<span class="line" id="L108"> }</span>
<span class="line" id="L109"></span>
<span class="line" id="L110"> <span class="tok-kw">fn</span> <span class="tok-fn">waitUntilSet</span>(self: *Impl, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L111"> <span class="tok-builtin">@setCold</span>(<span class="tok-null">true</span>);</span>
<span class="line" id="L112"></span>
<span class="line" id="L113"> <span class="tok-comment">// Try to set the state from `unset` to `waiting` to indicate</span>
</span>
<span class="line" id="L114"> <span class="tok-comment">// to the set() thread that others are blocked on the ResetEvent.</span>
</span>
<span class="line" id="L115"> <span class="tok-comment">// We avoid using any strict barriers until the end when we know the ResetEvent is set.</span>
</span>
<span class="line" id="L116"> <span class="tok-kw">var</span> state = self.state.load(.Monotonic);</span>
<span class="line" id="L117"> <span class="tok-kw">if</span> (state == unset) {</span>
<span class="line" id="L118"> state = self.state.compareAndSwap(state, waiting, .Monotonic, .Monotonic) <span class="tok-kw">orelse</span> waiting;</span>
<span class="line" id="L119"> }</span>
<span class="line" id="L120"></span>
<span class="line" id="L121"> <span class="tok-comment">// Wait until the ResetEvent is set since the state is waiting.</span>
</span>
<span class="line" id="L122"> <span class="tok-kw">if</span> (state == waiting) {</span>
<span class="line" id="L123"> <span class="tok-kw">var</span> futex_deadline = Futex.Deadline.init(timeout);</span>
<span class="line" id="L124"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L125"> <span class="tok-kw">const</span> wait_result = futex_deadline.wait(&self.state, waiting);</span>
<span class="line" id="L126"></span>
<span class="line" id="L127"> <span class="tok-comment">// Check if the ResetEvent was set before possibly reporting error.Timeout below.</span>
</span>
<span class="line" id="L128"> state = self.state.load(.Monotonic);</span>
<span class="line" id="L129"> <span class="tok-kw">if</span> (state != waiting) {</span>
<span class="line" id="L130"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L131"> }</span>
<span class="line" id="L132"></span>
<span class="line" id="L133"> <span class="tok-kw">try</span> wait_result;</span>
<span class="line" id="L134"> }</span>
<span class="line" id="L135"> }</span>
<span class="line" id="L136"></span>
<span class="line" id="L137"> <span class="tok-comment">// Acquire barrier ensures memory accesses before set() happen before we return.</span>
</span>
<span class="line" id="L138"> assert(state == is_set);</span>
<span class="line" id="L139"> self.state.fence(.Acquire);</span>
<span class="line" id="L140"> }</span>
<span class="line" id="L141"></span>
<span class="line" id="L142"> <span class="tok-kw">fn</span> <span class="tok-fn">set</span>(self: *Impl) <span class="tok-type">void</span> {</span>
<span class="line" id="L143"> <span class="tok-comment">// Quick check if the ResetEvent is already set before doing the atomic swap below.</span>
</span>
<span class="line" id="L144"> <span class="tok-comment">// set() could be getting called quite often and multiple threads calling swap() increases contention unnecessarily.</span>
</span>
<span class="line" id="L145"> <span class="tok-kw">if</span> (self.state.load(.Monotonic) == is_set) {</span>
<span class="line" id="L146"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L147"> }</span>
<span class="line" id="L148"></span>
<span class="line" id="L149"> <span class="tok-comment">// Mark the ResetEvent as set and unblock all waiters waiting on it if any.</span>
</span>
<span class="line" id="L150"> <span class="tok-comment">// Release barrier ensures memory accesses before set() happen before the ResetEvent is observed to be "set".</span>
</span>
<span class="line" id="L151"> <span class="tok-kw">if</span> (self.state.swap(is_set, .Release) == waiting) {</span>
<span class="line" id="L152"> Futex.wake(&self.state, std.math.maxInt(<span class="tok-type">u32</span>));</span>
<span class="line" id="L153"> }</span>
<span class="line" id="L154"> }</span>
<span class="line" id="L155"></span>
<span class="line" id="L156"> <span class="tok-kw">fn</span> <span class="tok-fn">reset</span>(self: *Impl) <span class="tok-type">void</span> {</span>
<span class="line" id="L157"> self.state.store(unset, .Monotonic);</span>
<span class="line" id="L158"> }</span>
<span class="line" id="L159">};</span>
<span class="line" id="L160"></span>
<span class="line" id="L161"><span class="tok-kw">test</span> <span class="tok-str">"ResetEvent - smoke test"</span> {</span>
<span class="line" id="L162"> <span class="tok-comment">// make sure the event is unset</span>
</span>
<span class="line" id="L163"> <span class="tok-kw">var</span> event = ResetEvent{};</span>
<span class="line" id="L164"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-null">false</span>, event.isSet());</span>
<span class="line" id="L165"></span>
<span class="line" id="L166"> <span class="tok-comment">// make sure the event gets set</span>
</span>
<span class="line" id="L167"> event.set();</span>
<span class="line" id="L168"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-null">true</span>, event.isSet());</span>
<span class="line" id="L169"></span>
<span class="line" id="L170"> <span class="tok-comment">// make sure the event gets unset again</span>
</span>
<span class="line" id="L171"> event.reset();</span>
<span class="line" id="L172"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-null">false</span>, event.isSet());</span>
<span class="line" id="L173"></span>
<span class="line" id="L174"> <span class="tok-comment">// waits should timeout as there's no other thread to set the event</span>
</span>
<span class="line" id="L175"> <span class="tok-kw">try</span> testing.expectError(<span class="tok-kw">error</span>.Timeout, event.timedWait(<span class="tok-number">0</span>));</span>
<span class="line" id="L176"> <span class="tok-kw">try</span> testing.expectError(<span class="tok-kw">error</span>.Timeout, event.timedWait(std.time.ns_per_ms));</span>
<span class="line" id="L177"></span>
<span class="line" id="L178"> <span class="tok-comment">// set the event again and make sure waits complete</span>
</span>
<span class="line" id="L179"> event.set();</span>
<span class="line" id="L180"> event.wait();</span>
<span class="line" id="L181"> <span class="tok-kw">try</span> event.timedWait(std.time.ns_per_ms);</span>
<span class="line" id="L182"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-null">true</span>, event.isSet());</span>
<span class="line" id="L183">}</span>
<span class="line" id="L184"></span>
<span class="line" id="L185"><span class="tok-kw">test</span> <span class="tok-str">"ResetEvent - signaling"</span> {</span>
<span class="line" id="L186"> <span class="tok-comment">// This test requires spawning threads</span>
</span>
<span class="line" id="L187"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L188"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L189"> }</span>
<span class="line" id="L190"></span>
<span class="line" id="L191"> <span class="tok-kw">const</span> Context = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L192"> in: ResetEvent = .{},</span>
<span class="line" id="L193"> out: ResetEvent = .{},</span>
<span class="line" id="L194"> value: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L195"></span>
<span class="line" id="L196"> <span class="tok-kw">fn</span> <span class="tok-fn">input</span>(self: *<span class="tok-builtin">@This</span>()) !<span class="tok-type">void</span> {</span>
<span class="line" id="L197"> <span class="tok-comment">// wait for the value to become 1</span>
</span>
<span class="line" id="L198"> self.in.wait();</span>
<span class="line" id="L199"> self.in.reset();</span>
<span class="line" id="L200"> <span class="tok-kw">try</span> testing.expectEqual(self.value, <span class="tok-number">1</span>);</span>
<span class="line" id="L201"></span>
<span class="line" id="L202"> <span class="tok-comment">// bump the value and wake up output()</span>
</span>
<span class="line" id="L203"> self.value = <span class="tok-number">2</span>;</span>
<span class="line" id="L204"> self.out.set();</span>
<span class="line" id="L205"></span>
<span class="line" id="L206"> <span class="tok-comment">// wait for output to receive 2, bump the value and wake us up with 3</span>
</span>
<span class="line" id="L207"> self.in.wait();</span>
<span class="line" id="L208"> self.in.reset();</span>
<span class="line" id="L209"> <span class="tok-kw">try</span> testing.expectEqual(self.value, <span class="tok-number">3</span>);</span>
<span class="line" id="L210"></span>
<span class="line" id="L211"> <span class="tok-comment">// bump the value and wake up output() for it to see 4</span>
</span>
<span class="line" id="L212"> self.value = <span class="tok-number">4</span>;</span>
<span class="line" id="L213"> self.out.set();</span>
<span class="line" id="L214"> }</span>
<span class="line" id="L215"></span>
<span class="line" id="L216"> <span class="tok-kw">fn</span> <span class="tok-fn">output</span>(self: *<span class="tok-builtin">@This</span>()) !<span class="tok-type">void</span> {</span>
<span class="line" id="L217"> <span class="tok-comment">// start with 0 and bump the value for input to see 1</span>
</span>
<span class="line" id="L218"> <span class="tok-kw">try</span> testing.expectEqual(self.value, <span class="tok-number">0</span>);</span>
<span class="line" id="L219"> self.value = <span class="tok-number">1</span>;</span>
<span class="line" id="L220"> self.in.set();</span>
<span class="line" id="L221"></span>
<span class="line" id="L222"> <span class="tok-comment">// wait for input to receive 1, bump the value to 2 and wake us up</span>
</span>
<span class="line" id="L223"> self.out.wait();</span>
<span class="line" id="L224"> self.out.reset();</span>
<span class="line" id="L225"> <span class="tok-kw">try</span> testing.expectEqual(self.value, <span class="tok-number">2</span>);</span>
<span class="line" id="L226"></span>
<span class="line" id="L227"> <span class="tok-comment">// bump the value to 3 for input to see (rhymes)</span>
</span>
<span class="line" id="L228"> self.value = <span class="tok-number">3</span>;</span>
<span class="line" id="L229"> self.in.set();</span>
<span class="line" id="L230"></span>
<span class="line" id="L231"> <span class="tok-comment">// wait for input to bump the value to 4 and receive no more (rhymes)</span>
</span>
<span class="line" id="L232"> self.out.wait();</span>
<span class="line" id="L233"> self.out.reset();</span>
<span class="line" id="L234"> <span class="tok-kw">try</span> testing.expectEqual(self.value, <span class="tok-number">4</span>);</span>
<span class="line" id="L235"> }</span>
<span class="line" id="L236"> };</span>
<span class="line" id="L237"></span>
<span class="line" id="L238"> <span class="tok-kw">var</span> ctx = Context{};</span>
<span class="line" id="L239"></span>
<span class="line" id="L240"> <span class="tok-kw">const</span> thread = <span class="tok-kw">try</span> std.Thread.spawn(.{}, Context.output, .{&ctx});</span>
<span class="line" id="L241"> <span class="tok-kw">defer</span> thread.join();</span>
<span class="line" id="L242"></span>
<span class="line" id="L243"> <span class="tok-kw">try</span> ctx.input();</span>
<span class="line" id="L244">}</span>
<span class="line" id="L245"></span>
<span class="line" id="L246"><span class="tok-kw">test</span> <span class="tok-str">"ResetEvent - broadcast"</span> {</span>
<span class="line" id="L247"> <span class="tok-comment">// This test requires spawning threads</span>
</span>
<span class="line" id="L248"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L249"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L250"> }</span>
<span class="line" id="L251"></span>
<span class="line" id="L252"> <span class="tok-kw">const</span> num_threads = <span class="tok-number">10</span>;</span>
<span class="line" id="L253"> <span class="tok-kw">const</span> Barrier = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L254"> event: ResetEvent = .{},</span>
<span class="line" id="L255"> counter: Atomic(<span class="tok-type">usize</span>) = Atomic(<span class="tok-type">usize</span>).init(num_threads),</span>
<span class="line" id="L256"></span>
<span class="line" id="L257"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L258"> <span class="tok-kw">if</span> (self.counter.fetchSub(<span class="tok-number">1</span>, .AcqRel) == <span class="tok-number">1</span>) {</span>
<span class="line" id="L259"> self.event.set();</span>
<span class="line" id="L260"> }</span>
<span class="line" id="L261"> }</span>
<span class="line" id="L262"> };</span>
<span class="line" id="L263"></span>
<span class="line" id="L264"> <span class="tok-kw">const</span> Context = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L265"> start_barrier: Barrier = .{},</span>
<span class="line" id="L266"> finish_barrier: Barrier = .{},</span>
<span class="line" id="L267"></span>
<span class="line" id="L268"> <span class="tok-kw">fn</span> <span class="tok-fn">run</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L269"> self.start_barrier.wait();</span>
<span class="line" id="L270"> self.finish_barrier.wait();</span>
<span class="line" id="L271"> }</span>
<span class="line" id="L272"> };</span>
<span class="line" id="L273"></span>
<span class="line" id="L274"> <span class="tok-kw">var</span> ctx = Context{};</span>
<span class="line" id="L275"> <span class="tok-kw">var</span> threads: [num_threads - <span class="tok-number">1</span>]std.Thread = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L276"></span>
<span class="line" id="L277"> <span class="tok-kw">for</span> (&threads) |*t| t.* = <span class="tok-kw">try</span> std.Thread.spawn(.{}, Context.run, .{&ctx});</span>
<span class="line" id="L278"> <span class="tok-kw">defer</span> <span class="tok-kw">for</span> (threads) |t| t.join();</span>
<span class="line" id="L279"></span>
<span class="line" id="L280"> ctx.run();</span>
<span class="line" id="L281">}</span>
<span class="line" id="L282"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/Thread/WaitGroup.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> Atomic = std.atomic.Atomic;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> WaitGroup = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L5"></span>
<span class="line" id="L6"><span class="tok-kw">const</span> is_waiting: <span class="tok-type">usize</span> = <span class="tok-number">1</span> << <span class="tok-number">0</span>;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> one_pending: <span class="tok-type">usize</span> = <span class="tok-number">1</span> << <span class="tok-number">1</span>;</span>
<span class="line" id="L8"></span>
<span class="line" id="L9">state: Atomic(<span class="tok-type">usize</span>) = Atomic(<span class="tok-type">usize</span>).init(<span class="tok-number">0</span>),</span>
<span class="line" id="L10">event: std.Thread.ResetEvent = .{},</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">start</span>(self: *WaitGroup) <span class="tok-type">void</span> {</span>
<span class="line" id="L13"> <span class="tok-kw">const</span> state = self.state.fetchAdd(one_pending, .Monotonic);</span>
<span class="line" id="L14"> assert((state / one_pending) < (std.math.maxInt(<span class="tok-type">usize</span>) / one_pending));</span>
<span class="line" id="L15">}</span>
<span class="line" id="L16"></span>
<span class="line" id="L17"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">finish</span>(self: *WaitGroup) <span class="tok-type">void</span> {</span>
<span class="line" id="L18"> <span class="tok-kw">const</span> state = self.state.fetchSub(one_pending, .Release);</span>
<span class="line" id="L19"> assert((state / one_pending) > <span class="tok-number">0</span>);</span>
<span class="line" id="L20"></span>
<span class="line" id="L21"> <span class="tok-kw">if</span> (state == (one_pending | is_waiting)) {</span>
<span class="line" id="L22"> self.state.fence(.Acquire);</span>
<span class="line" id="L23"> self.event.set();</span>
<span class="line" id="L24"> }</span>
<span class="line" id="L25">}</span>
<span class="line" id="L26"></span>
<span class="line" id="L27"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(self: *WaitGroup) <span class="tok-type">void</span> {</span>
<span class="line" id="L28"> <span class="tok-kw">var</span> state = self.state.fetchAdd(is_waiting, .Acquire);</span>
<span class="line" id="L29"> assert(state & is_waiting == <span class="tok-number">0</span>);</span>
<span class="line" id="L30"></span>
<span class="line" id="L31"> <span class="tok-kw">if</span> ((state / one_pending) > <span class="tok-number">0</span>) {</span>
<span class="line" id="L32"> self.event.wait();</span>
<span class="line" id="L33"> }</span>
<span class="line" id="L34">}</span>
<span class="line" id="L35"></span>
<span class="line" id="L36"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reset</span>(self: *WaitGroup) <span class="tok-type">void</span> {</span>
<span class="line" id="L37"> self.state.store(<span class="tok-number">0</span>, .Monotonic);</span>
<span class="line" id="L38"> self.event.reset();</span>
<span class="line" id="L39">}</span>
<span class="line" id="L40"></span>
<span class="line" id="L41"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isDone</span>(wg: *WaitGroup) <span class="tok-type">bool</span> {</span>
<span class="line" id="L42"> <span class="tok-kw">const</span> state = wg.state.load(.Acquire);</span>
<span class="line" id="L43"> assert(state & is_waiting == <span class="tok-number">0</span>);</span>
<span class="line" id="L44"></span>
<span class="line" id="L45"> <span class="tok-kw">return</span> (state / one_pending) == <span class="tok-number">0</span>;</span>
<span class="line" id="L46">}</span>
<span class="line" id="L47"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/Thread/Futex.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! Futex is a mechanism used to block (`wait`) and unblock (`wake`) threads using a 32bit memory address as hints.</span></span>
<span class="line" id="L2"><span class="tok-comment">//! Blocking a thread is acknowledged only if the 32bit memory address is equal to a given value.</span></span>
<span class="line" id="L3"><span class="tok-comment">//! This check helps avoid block/unblock deadlocks which occur if a `wake()` happens before a `wait()`.</span></span>
<span class="line" id="L4"><span class="tok-comment">//! Using Futex, other Thread synchronization primitives can be built which efficiently wait for cross-thread events or signals.</span></span>
<span class="line" id="L5"></span>
<span class="line" id="L6"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L7"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L8"><span class="tok-kw">const</span> Futex = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L9"></span>
<span class="line" id="L10"><span class="tok-kw">const</span> os = std.os;</span>
<span class="line" id="L11"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L12"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L13"><span class="tok-kw">const</span> Atomic = std.atomic.Atomic;</span>
<span class="line" id="L14"></span>
<span class="line" id="L15"><span class="tok-comment">/// Checks if `ptr` still contains the value `expect` and, if so, blocks the caller until either:</span></span>
<span class="line" id="L16"><span class="tok-comment">/// - The value at `ptr` is no longer equal to `expect`.</span></span>
<span class="line" id="L17"><span class="tok-comment">/// - The caller is unblocked by a matching `wake()`.</span></span>
<span class="line" id="L18"><span class="tok-comment">/// - The caller is unblocked spuriously ("at random").</span></span>
<span class="line" id="L19"><span class="tok-comment">///</span></span>
<span class="line" id="L20"><span class="tok-comment">/// The checking of `ptr` and `expect`, along with blocking the caller, is done atomically</span></span>
<span class="line" id="L21"><span class="tok-comment">/// and totally ordered (sequentially consistent) with respect to other wait()/wake() calls on the same `ptr`.</span></span>
<span class="line" id="L22"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), expect: <span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L23"> <span class="tok-builtin">@setCold</span>(<span class="tok-null">true</span>);</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"> Impl.wait(ptr, expect, <span class="tok-null">null</span>) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L26"> <span class="tok-kw">error</span>.Timeout => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// null timeout meant to wait forever</span>
</span>
<span class="line" id="L27"> };</span>
<span class="line" id="L28">}</span>
<span class="line" id="L29"></span>
<span class="line" id="L30"><span class="tok-comment">/// Checks if `ptr` still contains the value `expect` and, if so, blocks the caller until either:</span></span>
<span class="line" id="L31"><span class="tok-comment">/// - The value at `ptr` is no longer equal to `expect`.</span></span>
<span class="line" id="L32"><span class="tok-comment">/// - The caller is unblocked by a matching `wake()`.</span></span>
<span class="line" id="L33"><span class="tok-comment">/// - The caller is unblocked spuriously ("at random").</span></span>
<span class="line" id="L34"><span class="tok-comment">/// - The caller blocks for longer than the given timeout. In which case, `error.Timeout` is returned.</span></span>
<span class="line" id="L35"><span class="tok-comment">///</span></span>
<span class="line" id="L36"><span class="tok-comment">/// The checking of `ptr` and `expect`, along with blocking the caller, is done atomically</span></span>
<span class="line" id="L37"><span class="tok-comment">/// and totally ordered (sequentially consistent) with respect to other wait()/wake() calls on the same `ptr`.</span></span>
<span class="line" id="L38"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">timedWait</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), expect: <span class="tok-type">u32</span>, timeout_ns: <span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L39"> <span class="tok-builtin">@setCold</span>(<span class="tok-null">true</span>);</span>
<span class="line" id="L40"></span>
<span class="line" id="L41"> <span class="tok-comment">// Avoid calling into the OS for no-op timeouts.</span>
</span>
<span class="line" id="L42"> <span class="tok-kw">if</span> (timeout_ns == <span class="tok-number">0</span>) {</span>
<span class="line" id="L43"> <span class="tok-kw">if</span> (ptr.load(.SeqCst) != expect) <span class="tok-kw">return</span>;</span>
<span class="line" id="L44"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Timeout;</span>
<span class="line" id="L45"> }</span>
<span class="line" id="L46"></span>
<span class="line" id="L47"> <span class="tok-kw">return</span> Impl.wait(ptr, expect, timeout_ns);</span>
<span class="line" id="L48">}</span>
<span class="line" id="L49"></span>
<span class="line" id="L50"><span class="tok-comment">/// Unblocks at most `max_waiters` callers blocked in a `wait()` call on `ptr`.</span></span>
<span class="line" id="L51"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">wake</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), max_waiters: <span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L52"> <span class="tok-builtin">@setCold</span>(<span class="tok-null">true</span>);</span>
<span class="line" id="L53"></span>
<span class="line" id="L54"> <span class="tok-comment">// Avoid calling into the OS if there's nothing to wake up.</span>
</span>
<span class="line" id="L55"> <span class="tok-kw">if</span> (max_waiters == <span class="tok-number">0</span>) {</span>
<span class="line" id="L56"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L57"> }</span>
<span class="line" id="L58"></span>
<span class="line" id="L59"> Impl.wake(ptr, max_waiters);</span>
<span class="line" id="L60">}</span>
<span class="line" id="L61"></span>
<span class="line" id="L62"><span class="tok-kw">const</span> Impl = <span class="tok-kw">if</span> (builtin.single_threaded)</span>
<span class="line" id="L63"> SingleThreadedImpl</span>
<span class="line" id="L64"><span class="tok-kw">else</span> <span class="tok-kw">if</span> (builtin.os.tag == .windows)</span>
<span class="line" id="L65"> WindowsImpl</span>
<span class="line" id="L66"><span class="tok-kw">else</span> <span class="tok-kw">if</span> (builtin.os.tag.isDarwin())</span>
<span class="line" id="L67"> DarwinImpl</span>
<span class="line" id="L68"><span class="tok-kw">else</span> <span class="tok-kw">if</span> (builtin.os.tag == .linux)</span>
<span class="line" id="L69"> LinuxImpl</span>
<span class="line" id="L70"><span class="tok-kw">else</span> <span class="tok-kw">if</span> (builtin.os.tag == .freebsd)</span>
<span class="line" id="L71"> FreebsdImpl</span>
<span class="line" id="L72"><span class="tok-kw">else</span> <span class="tok-kw">if</span> (builtin.os.tag == .openbsd)</span>
<span class="line" id="L73"> OpenbsdImpl</span>
<span class="line" id="L74"><span class="tok-kw">else</span> <span class="tok-kw">if</span> (builtin.os.tag == .dragonfly)</span>
<span class="line" id="L75"> DragonflyImpl</span>
<span class="line" id="L76"><span class="tok-kw">else</span> <span class="tok-kw">if</span> (builtin.target.isWasm())</span>
<span class="line" id="L77"> WasmImpl</span>
<span class="line" id="L78"><span class="tok-kw">else</span> <span class="tok-kw">if</span> (std.Thread.use_pthreads)</span>
<span class="line" id="L79"> PosixImpl</span>
<span class="line" id="L80"><span class="tok-kw">else</span></span>
<span class="line" id="L81"> UnsupportedImpl;</span>
<span class="line" id="L82"></span>
<span class="line" id="L83"><span class="tok-comment">/// We can't do @compileError() in the `Impl` switch statement above as its eagerly evaluated.</span></span>
<span class="line" id="L84"><span class="tok-comment">/// So instead, we @compileError() on the methods themselves for platforms which don't support futex.</span></span>
<span class="line" id="L85"><span class="tok-kw">const</span> UnsupportedImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L86"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), expect: <span class="tok-type">u32</span>, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L87"> <span class="tok-kw">return</span> unsupported(.{ ptr, expect, timeout });</span>
<span class="line" id="L88"> }</span>
<span class="line" id="L89"></span>
<span class="line" id="L90"> <span class="tok-kw">fn</span> <span class="tok-fn">wake</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), max_waiters: <span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L91"> <span class="tok-kw">return</span> unsupported(.{ ptr, max_waiters });</span>
<span class="line" id="L92"> }</span>
<span class="line" id="L93"></span>
<span class="line" id="L94"> <span class="tok-kw">fn</span> <span class="tok-fn">unsupported</span>(unused: <span class="tok-kw">anytype</span>) <span class="tok-type">noreturn</span> {</span>
<span class="line" id="L95"> _ = unused;</span>
<span class="line" id="L96"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Unsupported operating system "</span> ++ <span class="tok-builtin">@tagName</span>(builtin.target.os.tag));</span>
<span class="line" id="L97"> }</span>
<span class="line" id="L98">};</span>
<span class="line" id="L99"></span>
<span class="line" id="L100"><span class="tok-kw">const</span> SingleThreadedImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L101"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), expect: <span class="tok-type">u32</span>, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L102"> <span class="tok-kw">if</span> (ptr.loadUnchecked() != expect) {</span>
<span class="line" id="L103"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L104"> }</span>
<span class="line" id="L105"></span>
<span class="line" id="L106"> <span class="tok-comment">// There are no threads to wake us up.</span>
</span>
<span class="line" id="L107"> <span class="tok-comment">// So if we wait without a timeout we would never wake up.</span>
</span>
<span class="line" id="L108"> <span class="tok-kw">const</span> delay = timeout <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L109"> <span class="tok-kw">unreachable</span>; <span class="tok-comment">// deadlock detected</span>
</span>
<span class="line" id="L110"> };</span>
<span class="line" id="L111"></span>
<span class="line" id="L112"> std.time.sleep(delay);</span>
<span class="line" id="L113"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Timeout;</span>
<span class="line" id="L114"> }</span>
<span class="line" id="L115"></span>
<span class="line" id="L116"> <span class="tok-kw">fn</span> <span class="tok-fn">wake</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), max_waiters: <span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L117"> <span class="tok-comment">// There are no other threads to possibly wake up</span>
</span>
<span class="line" id="L118"> _ = ptr;</span>
<span class="line" id="L119"> _ = max_waiters;</span>
<span class="line" id="L120"> }</span>
<span class="line" id="L121">};</span>
<span class="line" id="L122"></span>
<span class="line" id="L123"><span class="tok-comment">// We use WaitOnAddress through NtDll instead of API-MS-Win-Core-Synch-l1-2-0.dll</span>
</span>
<span class="line" id="L124"><span class="tok-comment">// as it's generally already a linked target and is autoloaded into all processes anyway.</span>
</span>
<span class="line" id="L125"><span class="tok-kw">const</span> WindowsImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L126"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), expect: <span class="tok-type">u32</span>, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L127"> <span class="tok-kw">var</span> timeout_value: os.windows.LARGE_INTEGER = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L128"> <span class="tok-kw">var</span> timeout_ptr: ?*<span class="tok-kw">const</span> os.windows.LARGE_INTEGER = <span class="tok-null">null</span>;</span>
<span class="line" id="L129"></span>
<span class="line" id="L130"> <span class="tok-comment">// NTDLL functions work with time in units of 100 nanoseconds.</span>
</span>
<span class="line" id="L131"> <span class="tok-comment">// Positive values are absolute deadlines while negative values are relative durations.</span>
</span>
<span class="line" id="L132"> <span class="tok-kw">if</span> (timeout) |delay| {</span>
<span class="line" id="L133"> timeout_value = <span class="tok-builtin">@as</span>(os.windows.LARGE_INTEGER, <span class="tok-builtin">@intCast</span>(delay / <span class="tok-number">100</span>));</span>
<span class="line" id="L134"> timeout_value = -timeout_value;</span>
<span class="line" id="L135"> timeout_ptr = &timeout_value;</span>
<span class="line" id="L136"> }</span>
<span class="line" id="L137"></span>
<span class="line" id="L138"> <span class="tok-kw">const</span> rc = os.windows.ntdll.RtlWaitOnAddress(</span>
<span class="line" id="L139"> <span class="tok-builtin">@as</span>(?*<span class="tok-kw">const</span> <span class="tok-type">anyopaque</span>, <span class="tok-builtin">@ptrCast</span>(ptr)),</span>
<span class="line" id="L140"> <span class="tok-builtin">@as</span>(?*<span class="tok-kw">const</span> <span class="tok-type">anyopaque</span>, <span class="tok-builtin">@ptrCast</span>(&expect)),</span>
<span class="line" id="L141"> <span class="tok-builtin">@sizeOf</span>(<span class="tok-builtin">@TypeOf</span>(expect)),</span>
<span class="line" id="L142"> timeout_ptr,</span>
<span class="line" id="L143"> );</span>
<span class="line" id="L144"></span>
<span class="line" id="L145"> <span class="tok-kw">switch</span> (rc) {</span>
<span class="line" id="L146"> .SUCCESS => {},</span>
<span class="line" id="L147"> .TIMEOUT => {</span>
<span class="line" id="L148"> assert(timeout != <span class="tok-null">null</span>);</span>
<span class="line" id="L149"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Timeout;</span>
<span class="line" id="L150"> },</span>
<span class="line" id="L151"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L152"> }</span>
<span class="line" id="L153"> }</span>
<span class="line" id="L154"></span>
<span class="line" id="L155"> <span class="tok-kw">fn</span> <span class="tok-fn">wake</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), max_waiters: <span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L156"> <span class="tok-kw">const</span> address = <span class="tok-builtin">@as</span>(?*<span class="tok-kw">const</span> <span class="tok-type">anyopaque</span>, <span class="tok-builtin">@ptrCast</span>(ptr));</span>
<span class="line" id="L157"> assert(max_waiters != <span class="tok-number">0</span>);</span>
<span class="line" id="L158"></span>
<span class="line" id="L159"> <span class="tok-kw">switch</span> (max_waiters) {</span>
<span class="line" id="L160"> <span class="tok-number">1</span> => os.windows.ntdll.RtlWakeAddressSingle(address),</span>
<span class="line" id="L161"> <span class="tok-kw">else</span> => os.windows.ntdll.RtlWakeAddressAll(address),</span>
<span class="line" id="L162"> }</span>
<span class="line" id="L163"> }</span>
<span class="line" id="L164">};</span>
<span class="line" id="L165"></span>
<span class="line" id="L166"><span class="tok-kw">const</span> DarwinImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L167"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), expect: <span class="tok-type">u32</span>, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L168"> <span class="tok-comment">// Darwin XNU 7195.50.7.100.1 introduced __ulock_wait2 and migrated code paths (notably pthread_cond_t) towards it:</span>
</span>
<span class="line" id="L169"> <span class="tok-comment">// https://github.com/apple/darwin-xnu/commit/d4061fb0260b3ed486147341b72468f836ed6c8f#diff-08f993cc40af475663274687b7c326cc6c3031e0db3ac8de7b24624610616be6</span>
</span>
<span class="line" id="L170"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L171"> <span class="tok-comment">// This XNU version appears to correspond to 11.0.1:</span>
</span>
<span class="line" id="L172"> <span class="tok-comment">// https://kernelshaman.blogspot.com/2021/01/building-xnu-for-macos-big-sur-1101.html</span>
</span>
<span class="line" id="L173"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L174"> <span class="tok-comment">// ulock_wait() uses 32-bit micro-second timeouts where 0 = INFINITE or no-timeout</span>
</span>
<span class="line" id="L175"> <span class="tok-comment">// ulock_wait2() uses 64-bit nano-second timeouts (with the same convention)</span>
</span>
<span class="line" id="L176"> <span class="tok-kw">const</span> supports_ulock_wait2 = builtin.target.os.version_range.semver.min.major >= <span class="tok-number">11</span>;</span>
<span class="line" id="L177"></span>
<span class="line" id="L178"> <span class="tok-kw">var</span> timeout_ns: <span class="tok-type">u64</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L179"> <span class="tok-kw">if</span> (timeout) |delay| {</span>
<span class="line" id="L180"> assert(delay != <span class="tok-number">0</span>); <span class="tok-comment">// handled by timedWait()</span>
</span>
<span class="line" id="L181"> timeout_ns = delay;</span>
<span class="line" id="L182"> }</span>
<span class="line" id="L183"></span>
<span class="line" id="L184"> <span class="tok-comment">// If we're using `__ulock_wait` and `timeout` is too big to fit inside a `u32` count of</span>
</span>
<span class="line" id="L185"> <span class="tok-comment">// micro-seconds (around 70min), we'll request a shorter timeout. This is fine (users</span>
</span>
<span class="line" id="L186"> <span class="tok-comment">// should handle spurious wakeups), but we need to remember that we did so, so that</span>
</span>
<span class="line" id="L187"> <span class="tok-comment">// we don't return `Timeout` incorrectly. If that happens, we set this variable to</span>
</span>
<span class="line" id="L188"> <span class="tok-comment">// true so that we we know to ignore the ETIMEDOUT result.</span>
</span>
<span class="line" id="L189"> <span class="tok-kw">var</span> timeout_overflowed = <span class="tok-null">false</span>;</span>
<span class="line" id="L190"></span>
<span class="line" id="L191"> <span class="tok-kw">const</span> addr = <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> <span class="tok-type">anyopaque</span>, <span class="tok-builtin">@ptrCast</span>(ptr));</span>
<span class="line" id="L192"> <span class="tok-kw">const</span> flags = os.darwin.UL_COMPARE_AND_WAIT | os.darwin.ULF_NO_ERRNO;</span>
<span class="line" id="L193"> <span class="tok-kw">const</span> status = blk: {</span>
<span class="line" id="L194"> <span class="tok-kw">if</span> (supports_ulock_wait2) {</span>
<span class="line" id="L195"> <span class="tok-kw">break</span> :blk os.darwin.__ulock_wait2(flags, addr, expect, timeout_ns, <span class="tok-number">0</span>);</span>
<span class="line" id="L196"> }</span>
<span class="line" id="L197"></span>
<span class="line" id="L198"> <span class="tok-kw">const</span> timeout_us = std.math.cast(<span class="tok-type">u32</span>, timeout_ns / std.time.ns_per_us) <span class="tok-kw">orelse</span> overflow: {</span>
<span class="line" id="L199"> timeout_overflowed = <span class="tok-null">true</span>;</span>
<span class="line" id="L200"> <span class="tok-kw">break</span> :overflow std.math.maxInt(<span class="tok-type">u32</span>);</span>
<span class="line" id="L201"> };</span>
<span class="line" id="L202"></span>
<span class="line" id="L203"> <span class="tok-kw">break</span> :blk os.darwin.__ulock_wait(flags, addr, expect, timeout_us);</span>
<span class="line" id="L204"> };</span>
<span class="line" id="L205"></span>
<span class="line" id="L206"> <span class="tok-kw">if</span> (status >= <span class="tok-number">0</span>) <span class="tok-kw">return</span>;</span>
<span class="line" id="L207"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@as</span>(std.os.E, <span class="tok-builtin">@enumFromInt</span>(-status))) {</span>
<span class="line" id="L208"> <span class="tok-comment">// Wait was interrupted by the OS or other spurious signalling.</span>
</span>
<span class="line" id="L209"> .INTR => {},</span>
<span class="line" id="L210"> <span class="tok-comment">// Address of the futex was paged out. This is unlikely, but possible in theory, and</span>
</span>
<span class="line" id="L211"> <span class="tok-comment">// pthread/libdispatch on darwin bother to handle it. In this case we'll return</span>
</span>
<span class="line" id="L212"> <span class="tok-comment">// without waiting, but the caller should retry anyway.</span>
</span>
<span class="line" id="L213"> .FAULT => {},</span>
<span class="line" id="L214"> <span class="tok-comment">// Only report Timeout if we didn't have to cap the timeout</span>
</span>
<span class="line" id="L215"> .TIMEDOUT => {</span>
<span class="line" id="L216"> assert(timeout != <span class="tok-null">null</span>);</span>
<span class="line" id="L217"> <span class="tok-kw">if</span> (!timeout_overflowed) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Timeout;</span>
<span class="line" id="L218"> },</span>
<span class="line" id="L219"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L220"> }</span>
<span class="line" id="L221"> }</span>
<span class="line" id="L222"></span>
<span class="line" id="L223"> <span class="tok-kw">fn</span> <span class="tok-fn">wake</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), max_waiters: <span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L224"> <span class="tok-kw">var</span> flags: <span class="tok-type">u32</span> = os.darwin.UL_COMPARE_AND_WAIT | os.darwin.ULF_NO_ERRNO;</span>
<span class="line" id="L225"> <span class="tok-kw">if</span> (max_waiters > <span class="tok-number">1</span>) {</span>
<span class="line" id="L226"> flags |= os.darwin.ULF_WAKE_ALL;</span>
<span class="line" id="L227"> }</span>
<span class="line" id="L228"></span>
<span class="line" id="L229"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L230"> <span class="tok-kw">const</span> addr = <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> <span class="tok-type">anyopaque</span>, <span class="tok-builtin">@ptrCast</span>(ptr));</span>
<span class="line" id="L231"> <span class="tok-kw">const</span> status = os.darwin.__ulock_wake(flags, addr, <span class="tok-number">0</span>);</span>
<span class="line" id="L232"></span>
<span class="line" id="L233"> <span class="tok-kw">if</span> (status >= <span class="tok-number">0</span>) <span class="tok-kw">return</span>;</span>
<span class="line" id="L234"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@as</span>(std.os.E, <span class="tok-builtin">@enumFromInt</span>(-status))) {</span>
<span class="line" id="L235"> .INTR => <span class="tok-kw">continue</span>, <span class="tok-comment">// spurious wake()</span>
</span>
<span class="line" id="L236"> .FAULT => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// __ulock_wake doesn't generate EFAULT according to darwin pthread_cond_t</span>
</span>
<span class="line" id="L237"> .NOENT => <span class="tok-kw">return</span>, <span class="tok-comment">// nothing was woken up</span>
</span>
<span class="line" id="L238"> .ALREADY => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// only for ULF_WAKE_THREAD</span>
</span>
<span class="line" id="L239"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L240"> }</span>
<span class="line" id="L241"> }</span>
<span class="line" id="L242"> }</span>
<span class="line" id="L243">};</span>
<span class="line" id="L244"></span>
<span class="line" id="L245"><span class="tok-comment">// https://man7.org/linux/man-pages/man2/futex.2.html</span>
</span>
<span class="line" id="L246"><span class="tok-kw">const</span> LinuxImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L247"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), expect: <span class="tok-type">u32</span>, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L248"> <span class="tok-kw">var</span> ts: os.timespec = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L249"> <span class="tok-kw">if</span> (timeout) |timeout_ns| {</span>
<span class="line" id="L250"> ts.tv_sec = <span class="tok-builtin">@as</span>(<span class="tok-builtin">@TypeOf</span>(ts.tv_sec), <span class="tok-builtin">@intCast</span>(timeout_ns / std.time.ns_per_s));</span>
<span class="line" id="L251"> ts.tv_nsec = <span class="tok-builtin">@as</span>(<span class="tok-builtin">@TypeOf</span>(ts.tv_nsec), <span class="tok-builtin">@intCast</span>(timeout_ns % std.time.ns_per_s));</span>
<span class="line" id="L252"> }</span>
<span class="line" id="L253"></span>
<span class="line" id="L254"> <span class="tok-kw">const</span> rc = os.linux.futex_wait(</span>
<span class="line" id="L255"> <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> <span class="tok-type">i32</span>, <span class="tok-builtin">@ptrCast</span>(&ptr.value)),</span>
<span class="line" id="L256"> os.linux.FUTEX.PRIVATE_FLAG | os.linux.FUTEX.WAIT,</span>
<span class="line" id="L257"> <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@bitCast</span>(expect)),</span>
<span class="line" id="L258"> <span class="tok-kw">if</span> (timeout != <span class="tok-null">null</span>) &ts <span class="tok-kw">else</span> <span class="tok-null">null</span>,</span>
<span class="line" id="L259"> );</span>
<span class="line" id="L260"></span>
<span class="line" id="L261"> <span class="tok-kw">switch</span> (os.linux.getErrno(rc)) {</span>
<span class="line" id="L262"> .SUCCESS => {}, <span class="tok-comment">// notified by `wake()`</span>
</span>
<span class="line" id="L263"> .INTR => {}, <span class="tok-comment">// spurious wakeup</span>
</span>
<span class="line" id="L264"> .AGAIN => {}, <span class="tok-comment">// ptr.* != expect</span>
</span>
<span class="line" id="L265"> .TIMEDOUT => {</span>
<span class="line" id="L266"> assert(timeout != <span class="tok-null">null</span>);</span>
<span class="line" id="L267"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Timeout;</span>
<span class="line" id="L268"> },</span>
<span class="line" id="L269"> .INVAL => {}, <span class="tok-comment">// possibly timeout overflow</span>
</span>
<span class="line" id="L270"> .FAULT => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// ptr was invalid</span>
</span>
<span class="line" id="L271"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L272"> }</span>
<span class="line" id="L273"> }</span>
<span class="line" id="L274"></span>
<span class="line" id="L275"> <span class="tok-kw">fn</span> <span class="tok-fn">wake</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), max_waiters: <span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L276"> <span class="tok-kw">const</span> rc = os.linux.futex_wake(</span>
<span class="line" id="L277"> <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> <span class="tok-type">i32</span>, <span class="tok-builtin">@ptrCast</span>(&ptr.value)),</span>
<span class="line" id="L278"> os.linux.FUTEX.PRIVATE_FLAG | os.linux.FUTEX.WAKE,</span>
<span class="line" id="L279"> std.math.cast(<span class="tok-type">i32</span>, max_waiters) <span class="tok-kw">orelse</span> std.math.maxInt(<span class="tok-type">i32</span>),</span>
<span class="line" id="L280"> );</span>
<span class="line" id="L281"></span>
<span class="line" id="L282"> <span class="tok-kw">switch</span> (os.linux.getErrno(rc)) {</span>
<span class="line" id="L283"> .SUCCESS => {}, <span class="tok-comment">// successful wake up</span>
</span>
<span class="line" id="L284"> .INVAL => {}, <span class="tok-comment">// invalid futex_wait() on ptr done elsewhere</span>
</span>
<span class="line" id="L285"> .FAULT => {}, <span class="tok-comment">// pointer became invalid while doing the wake</span>
</span>
<span class="line" id="L286"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L287"> }</span>
<span class="line" id="L288"> }</span>
<span class="line" id="L289">};</span>
<span class="line" id="L290"></span>
<span class="line" id="L291"><span class="tok-comment">// https://www.freebsd.org/cgi/man.cgi?query=_umtx_op&sektion=2&n=1</span>
</span>
<span class="line" id="L292"><span class="tok-kw">const</span> FreebsdImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L293"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), expect: <span class="tok-type">u32</span>, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L294"> <span class="tok-kw">var</span> tm_size: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L295"> <span class="tok-kw">var</span> tm: os.freebsd._umtx_time = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L296"> <span class="tok-kw">var</span> tm_ptr: ?*<span class="tok-kw">const</span> os.freebsd._umtx_time = <span class="tok-null">null</span>;</span>
<span class="line" id="L297"></span>
<span class="line" id="L298"> <span class="tok-kw">if</span> (timeout) |timeout_ns| {</span>
<span class="line" id="L299"> tm_ptr = &tm;</span>
<span class="line" id="L300"> tm_size = <span class="tok-builtin">@sizeOf</span>(<span class="tok-builtin">@TypeOf</span>(tm));</span>
<span class="line" id="L301"></span>
<span class="line" id="L302"> tm._flags = <span class="tok-number">0</span>; <span class="tok-comment">// use relative time not UMTX_ABSTIME</span>
</span>
<span class="line" id="L303"> tm._clockid = os.CLOCK.MONOTONIC;</span>
<span class="line" id="L304"> tm._timeout.tv_sec = <span class="tok-builtin">@as</span>(<span class="tok-builtin">@TypeOf</span>(tm._timeout.tv_sec), <span class="tok-builtin">@intCast</span>(timeout_ns / std.time.ns_per_s));</span>
<span class="line" id="L305"> tm._timeout.tv_nsec = <span class="tok-builtin">@as</span>(<span class="tok-builtin">@TypeOf</span>(tm._timeout.tv_nsec), <span class="tok-builtin">@intCast</span>(timeout_ns % std.time.ns_per_s));</span>
<span class="line" id="L306"> }</span>
<span class="line" id="L307"></span>
<span class="line" id="L308"> <span class="tok-kw">const</span> rc = os.freebsd._umtx_op(</span>
<span class="line" id="L309"> <span class="tok-builtin">@intFromPtr</span>(&ptr.value),</span>
<span class="line" id="L310"> <span class="tok-builtin">@intFromEnum</span>(os.freebsd.UMTX_OP.WAIT_UINT_PRIVATE),</span>
<span class="line" id="L311"> <span class="tok-builtin">@as</span>(<span class="tok-type">c_ulong</span>, expect),</span>
<span class="line" id="L312"> tm_size,</span>
<span class="line" id="L313"> <span class="tok-builtin">@intFromPtr</span>(tm_ptr),</span>
<span class="line" id="L314"> );</span>
<span class="line" id="L315"></span>
<span class="line" id="L316"> <span class="tok-kw">switch</span> (os.errno(rc)) {</span>
<span class="line" id="L317"> .SUCCESS => {},</span>
<span class="line" id="L318"> .FAULT => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// one of the args points to invalid memory</span>
</span>
<span class="line" id="L319"> .INVAL => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// arguments should be correct</span>
</span>
<span class="line" id="L320"> .TIMEDOUT => {</span>
<span class="line" id="L321"> assert(timeout != <span class="tok-null">null</span>);</span>
<span class="line" id="L322"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Timeout;</span>
<span class="line" id="L323"> },</span>
<span class="line" id="L324"> .INTR => {}, <span class="tok-comment">// spurious wake</span>
</span>
<span class="line" id="L325"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L326"> }</span>
<span class="line" id="L327"> }</span>
<span class="line" id="L328"></span>
<span class="line" id="L329"> <span class="tok-kw">fn</span> <span class="tok-fn">wake</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), max_waiters: <span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L330"> <span class="tok-kw">const</span> rc = os.freebsd._umtx_op(</span>
<span class="line" id="L331"> <span class="tok-builtin">@intFromPtr</span>(&ptr.value),</span>
<span class="line" id="L332"> <span class="tok-builtin">@intFromEnum</span>(os.freebsd.UMTX_OP.WAKE_PRIVATE),</span>
<span class="line" id="L333"> <span class="tok-builtin">@as</span>(<span class="tok-type">c_ulong</span>, max_waiters),</span>
<span class="line" id="L334"> <span class="tok-number">0</span>, <span class="tok-comment">// there is no timeout struct</span>
</span>
<span class="line" id="L335"> <span class="tok-number">0</span>, <span class="tok-comment">// there is no timeout struct pointer</span>
</span>
<span class="line" id="L336"> );</span>
<span class="line" id="L337"></span>
<span class="line" id="L338"> <span class="tok-kw">switch</span> (os.errno(rc)) {</span>
<span class="line" id="L339"> .SUCCESS => {},</span>
<span class="line" id="L340"> .FAULT => {}, <span class="tok-comment">// it's ok if the ptr doesn't point to valid memory</span>
</span>
<span class="line" id="L341"> .INVAL => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// arguments should be correct</span>
</span>
<span class="line" id="L342"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L343"> }</span>
<span class="line" id="L344"> }</span>
<span class="line" id="L345">};</span>
<span class="line" id="L346"></span>
<span class="line" id="L347"><span class="tok-comment">// https://man.openbsd.org/futex.2</span>
</span>
<span class="line" id="L348"><span class="tok-kw">const</span> OpenbsdImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L349"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), expect: <span class="tok-type">u32</span>, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L350"> <span class="tok-kw">var</span> ts: os.timespec = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L351"> <span class="tok-kw">if</span> (timeout) |timeout_ns| {</span>
<span class="line" id="L352"> ts.tv_sec = <span class="tok-builtin">@as</span>(<span class="tok-builtin">@TypeOf</span>(ts.tv_sec), <span class="tok-builtin">@intCast</span>(timeout_ns / std.time.ns_per_s));</span>
<span class="line" id="L353"> ts.tv_nsec = <span class="tok-builtin">@as</span>(<span class="tok-builtin">@TypeOf</span>(ts.tv_nsec), <span class="tok-builtin">@intCast</span>(timeout_ns % std.time.ns_per_s));</span>
<span class="line" id="L354"> }</span>
<span class="line" id="L355"></span>
<span class="line" id="L356"> <span class="tok-kw">const</span> rc = os.openbsd.futex(</span>
<span class="line" id="L357"> <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> <span class="tok-kw">volatile</span> <span class="tok-type">u32</span>, <span class="tok-builtin">@ptrCast</span>(&ptr.value)),</span>
<span class="line" id="L358"> os.openbsd.FUTEX_WAIT | os.openbsd.FUTEX_PRIVATE_FLAG,</span>
<span class="line" id="L359"> <span class="tok-builtin">@as</span>(<span class="tok-type">c_int</span>, <span class="tok-builtin">@bitCast</span>(expect)),</span>
<span class="line" id="L360"> <span class="tok-kw">if</span> (timeout != <span class="tok-null">null</span>) &ts <span class="tok-kw">else</span> <span class="tok-null">null</span>,</span>
<span class="line" id="L361"> <span class="tok-null">null</span>, <span class="tok-comment">// FUTEX_WAIT takes no requeue address</span>
</span>
<span class="line" id="L362"> );</span>
<span class="line" id="L363"></span>
<span class="line" id="L364"> <span class="tok-kw">switch</span> (os.errno(rc)) {</span>
<span class="line" id="L365"> .SUCCESS => {}, <span class="tok-comment">// woken up by wake</span>
</span>
<span class="line" id="L366"> .NOSYS => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// the futex operation shouldn't be invalid</span>
</span>
<span class="line" id="L367"> .FAULT => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// ptr was invalid</span>
</span>
<span class="line" id="L368"> .AGAIN => {}, <span class="tok-comment">// ptr != expect</span>
</span>
<span class="line" id="L369"> .INVAL => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// invalid timeout</span>
</span>
<span class="line" id="L370"> .TIMEDOUT => {</span>
<span class="line" id="L371"> assert(timeout != <span class="tok-null">null</span>);</span>
<span class="line" id="L372"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Timeout;</span>
<span class="line" id="L373"> },</span>
<span class="line" id="L374"> .INTR => {}, <span class="tok-comment">// spurious wake from signal</span>
</span>
<span class="line" id="L375"> .CANCELED => {}, <span class="tok-comment">// spurious wake from signal with SA_RESTART</span>
</span>
<span class="line" id="L376"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L377"> }</span>
<span class="line" id="L378"> }</span>
<span class="line" id="L379"></span>
<span class="line" id="L380"> <span class="tok-kw">fn</span> <span class="tok-fn">wake</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), max_waiters: <span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L381"> <span class="tok-kw">const</span> rc = os.openbsd.futex(</span>
<span class="line" id="L382"> <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> <span class="tok-kw">volatile</span> <span class="tok-type">u32</span>, <span class="tok-builtin">@ptrCast</span>(&ptr.value)),</span>
<span class="line" id="L383"> os.openbsd.FUTEX_WAKE | os.openbsd.FUTEX_PRIVATE_FLAG,</span>
<span class="line" id="L384"> std.math.cast(<span class="tok-type">c_int</span>, max_waiters) <span class="tok-kw">orelse</span> std.math.maxInt(<span class="tok-type">c_int</span>),</span>
<span class="line" id="L385"> <span class="tok-null">null</span>, <span class="tok-comment">// FUTEX_WAKE takes no timeout ptr</span>
</span>
<span class="line" id="L386"> <span class="tok-null">null</span>, <span class="tok-comment">// FUTEX_WAKE takes no requeue address</span>
</span>
<span class="line" id="L387"> );</span>
<span class="line" id="L388"></span>
<span class="line" id="L389"> <span class="tok-comment">// returns number of threads woken up.</span>
</span>
<span class="line" id="L390"> assert(rc >= <span class="tok-number">0</span>);</span>
<span class="line" id="L391"> }</span>
<span class="line" id="L392">};</span>
<span class="line" id="L393"></span>
<span class="line" id="L394"><span class="tok-comment">// https://man.dragonflybsd.org/?command=umtx&section=2</span>
</span>
<span class="line" id="L395"><span class="tok-kw">const</span> DragonflyImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L396"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), expect: <span class="tok-type">u32</span>, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L397"> <span class="tok-comment">// Dragonfly uses a scheme where 0 timeout means wait until signaled or spurious wake.</span>
</span>
<span class="line" id="L398"> <span class="tok-comment">// It's reporting of timeout's is also unrealiable so we use an external timing source (Timer) instead.</span>
</span>
<span class="line" id="L399"> <span class="tok-kw">var</span> timeout_us: <span class="tok-type">c_int</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L400"> <span class="tok-kw">var</span> timeout_overflowed = <span class="tok-null">false</span>;</span>
<span class="line" id="L401"> <span class="tok-kw">var</span> sleep_timer: std.time.Timer = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L402"></span>
<span class="line" id="L403"> <span class="tok-kw">if</span> (timeout) |delay| {</span>
<span class="line" id="L404"> assert(delay != <span class="tok-number">0</span>); <span class="tok-comment">// handled by timedWait().</span>
</span>
<span class="line" id="L405"> timeout_us = std.math.cast(<span class="tok-type">c_int</span>, delay / std.time.ns_per_us) <span class="tok-kw">orelse</span> blk: {</span>
<span class="line" id="L406"> timeout_overflowed = <span class="tok-null">true</span>;</span>
<span class="line" id="L407"> <span class="tok-kw">break</span> :blk std.math.maxInt(<span class="tok-type">c_int</span>);</span>
<span class="line" id="L408"> };</span>
<span class="line" id="L409"></span>
<span class="line" id="L410"> <span class="tok-comment">// Only need to record the start time if we can provide somewhat accurate error.Timeout's</span>
</span>
<span class="line" id="L411"> <span class="tok-kw">if</span> (!timeout_overflowed) {</span>
<span class="line" id="L412"> sleep_timer = std.time.Timer.start() <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L413"> }</span>
<span class="line" id="L414"> }</span>
<span class="line" id="L415"></span>
<span class="line" id="L416"> <span class="tok-kw">const</span> value = <span class="tok-builtin">@as</span>(<span class="tok-type">c_int</span>, <span class="tok-builtin">@bitCast</span>(expect));</span>
<span class="line" id="L417"> <span class="tok-kw">const</span> addr = <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> <span class="tok-kw">volatile</span> <span class="tok-type">c_int</span>, <span class="tok-builtin">@ptrCast</span>(&ptr.value));</span>
<span class="line" id="L418"> <span class="tok-kw">const</span> rc = os.dragonfly.umtx_sleep(addr, value, timeout_us);</span>
<span class="line" id="L419"></span>
<span class="line" id="L420"> <span class="tok-kw">switch</span> (os.errno(rc)) {</span>
<span class="line" id="L421"> .SUCCESS => {},</span>
<span class="line" id="L422"> .BUSY => {}, <span class="tok-comment">// ptr != expect</span>
</span>
<span class="line" id="L423"> .AGAIN => { <span class="tok-comment">// maybe timed out, or paged out, or hit 2s kernel refresh</span>
</span>
<span class="line" id="L424"> <span class="tok-kw">if</span> (timeout) |timeout_ns| {</span>
<span class="line" id="L425"> <span class="tok-comment">// Report error.Timeout only if we know the timeout duration has passed.</span>
</span>
<span class="line" id="L426"> <span class="tok-comment">// If not, there's not much choice other than treating it as a spurious wake.</span>
</span>
<span class="line" id="L427"> <span class="tok-kw">if</span> (!timeout_overflowed <span class="tok-kw">and</span> sleep_timer.read() >= timeout_ns) {</span>
<span class="line" id="L428"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Timeout;</span>
<span class="line" id="L429"> }</span>
<span class="line" id="L430"> }</span>
<span class="line" id="L431"> },</span>
<span class="line" id="L432"> .INTR => {}, <span class="tok-comment">// spurious wake</span>
</span>
<span class="line" id="L433"> .INVAL => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// invalid timeout</span>
</span>
<span class="line" id="L434"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L435"> }</span>
<span class="line" id="L436"> }</span>
<span class="line" id="L437"></span>
<span class="line" id="L438"> <span class="tok-kw">fn</span> <span class="tok-fn">wake</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), max_waiters: <span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L439"> <span class="tok-comment">// A count of zero means wake all waiters.</span>
</span>
<span class="line" id="L440"> assert(max_waiters != <span class="tok-number">0</span>);</span>
<span class="line" id="L441"> <span class="tok-kw">const</span> to_wake = std.math.cast(<span class="tok-type">c_int</span>, max_waiters) <span class="tok-kw">orelse</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L442"></span>
<span class="line" id="L443"> <span class="tok-comment">// https://man.dragonflybsd.org/?command=umtx&section=2</span>
</span>
<span class="line" id="L444"> <span class="tok-comment">// > umtx_wakeup() will generally return 0 unless the address is bad.</span>
</span>
<span class="line" id="L445"> <span class="tok-comment">// We are fine with the address being bad (e.g. for Semaphore.post() where Semaphore.wait() frees the Semaphore)</span>
</span>
<span class="line" id="L446"> <span class="tok-kw">const</span> addr = <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> <span class="tok-kw">volatile</span> <span class="tok-type">c_int</span>, <span class="tok-builtin">@ptrCast</span>(&ptr.value));</span>
<span class="line" id="L447"> _ = os.dragonfly.umtx_wakeup(addr, to_wake);</span>
<span class="line" id="L448"> }</span>
<span class="line" id="L449">};</span>
<span class="line" id="L450"></span>
<span class="line" id="L451"><span class="tok-kw">const</span> WasmImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L452"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), expect: <span class="tok-type">u32</span>, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L453"> <span class="tok-kw">if</span> (!<span class="tok-kw">comptime</span> std.Target.wasm.featureSetHas(builtin.target.cpu.features, .atomics)) {</span>
<span class="line" id="L454"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"WASI target missing cpu feature 'atomics'"</span>);</span>
<span class="line" id="L455"> }</span>
<span class="line" id="L456"> <span class="tok-kw">const</span> to: <span class="tok-type">i64</span> = <span class="tok-kw">if</span> (timeout) |to| <span class="tok-builtin">@intCast</span>(to) <span class="tok-kw">else</span> -<span class="tok-number">1</span>;</span>
<span class="line" id="L457"> <span class="tok-kw">const</span> result = <span class="tok-kw">asm</span> (</span>
<span class="line" id="L458"> <span class="tok-str">\\local.get %[ptr]</span></span>
<span class="line" id="L459"> <span class="tok-str">\\local.get %[expected]</span></span>
<span class="line" id="L460"> <span class="tok-str">\\local.get %[timeout]</span></span>
<span class="line" id="L461"> <span class="tok-str">\\memory.atomic.wait32 0</span></span>
<span class="line" id="L462"> <span class="tok-str">\\local.set %[ret]</span></span>
<span class="line" id="L463"> : [ret] <span class="tok-str">"=r"</span> (-> <span class="tok-type">u32</span>),</span>
<span class="line" id="L464"> : [ptr] <span class="tok-str">"r"</span> (&ptr.value),</span>
<span class="line" id="L465"> [expected] <span class="tok-str">"r"</span> (<span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@bitCast</span>(expect))),</span>
<span class="line" id="L466"> [timeout] <span class="tok-str">"r"</span> (to),</span>
<span class="line" id="L467"> );</span>
<span class="line" id="L468"> <span class="tok-kw">switch</span> (result) {</span>
<span class="line" id="L469"> <span class="tok-number">0</span> => {}, <span class="tok-comment">// ok</span>
</span>
<span class="line" id="L470"> <span class="tok-number">1</span> => {}, <span class="tok-comment">// expected =! loaded</span>
</span>
<span class="line" id="L471"> <span class="tok-number">2</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Timeout,</span>
<span class="line" id="L472"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L473"> }</span>
<span class="line" id="L474"> }</span>
<span class="line" id="L475"></span>
<span class="line" id="L476"> <span class="tok-kw">fn</span> <span class="tok-fn">wake</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), max_waiters: <span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L477"> <span class="tok-kw">if</span> (!<span class="tok-kw">comptime</span> std.Target.wasm.featureSetHas(builtin.target.cpu.features, .atomics)) {</span>
<span class="line" id="L478"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"WASI target missing cpu feature 'atomics'"</span>);</span>
<span class="line" id="L479"> }</span>
<span class="line" id="L480"> assert(max_waiters != <span class="tok-number">0</span>);</span>
<span class="line" id="L481"> <span class="tok-kw">const</span> woken_count = <span class="tok-kw">asm</span> (</span>
<span class="line" id="L482"> <span class="tok-str">\\local.get %[ptr]</span></span>
<span class="line" id="L483"> <span class="tok-str">\\local.get %[waiters]</span></span>
<span class="line" id="L484"> <span class="tok-str">\\memory.atomic.notify 0</span></span>
<span class="line" id="L485"> <span class="tok-str">\\local.set %[ret]</span></span>
<span class="line" id="L486"> : [ret] <span class="tok-str">"=r"</span> (-> <span class="tok-type">u32</span>),</span>
<span class="line" id="L487"> : [ptr] <span class="tok-str">"r"</span> (&ptr.value),</span>
<span class="line" id="L488"> [waiters] <span class="tok-str">"r"</span> (max_waiters),</span>
<span class="line" id="L489"> );</span>
<span class="line" id="L490"> _ = woken_count; <span class="tok-comment">// can be 0 when linker flag 'shared-memory' is not enabled</span>
</span>
<span class="line" id="L491"> }</span>
<span class="line" id="L492">};</span>
<span class="line" id="L493"></span>
<span class="line" id="L494"><span class="tok-comment">/// Modified version of linux's futex and Go's sema to implement userspace wait queues with pthread:</span></span>
<span class="line" id="L495"><span class="tok-comment">/// https://code.woboq.org/linux/linux/kernel/futex.c.html</span></span>
<span class="line" id="L496"><span class="tok-comment">/// https://go.dev/src/runtime/sema.go</span></span>
<span class="line" id="L497"><span class="tok-kw">const</span> PosixImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L498"> <span class="tok-kw">const</span> Event = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L499"> cond: std.c.pthread_cond_t,</span>
<span class="line" id="L500"> mutex: std.c.pthread_mutex_t,</span>
<span class="line" id="L501"> state: <span class="tok-kw">enum</span> { empty, waiting, notified },</span>
<span class="line" id="L502"></span>
<span class="line" id="L503"> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(self: *Event) <span class="tok-type">void</span> {</span>
<span class="line" id="L504"> <span class="tok-comment">// Use static init instead of pthread_cond/mutex_init() since this is generally faster.</span>
</span>
<span class="line" id="L505"> self.cond = .{};</span>
<span class="line" id="L506"> self.mutex = .{};</span>
<span class="line" id="L507"> self.state = .empty;</span>
<span class="line" id="L508"> }</span>
<span class="line" id="L509"></span>
<span class="line" id="L510"> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *Event) <span class="tok-type">void</span> {</span>
<span class="line" id="L511"> <span class="tok-comment">// Some platforms reportedly give EINVAL for statically initialized pthread types.</span>
</span>
<span class="line" id="L512"> <span class="tok-kw">const</span> rc = std.c.pthread_cond_destroy(&self.cond);</span>
<span class="line" id="L513"> assert(rc == .SUCCESS <span class="tok-kw">or</span> rc == .INVAL);</span>
<span class="line" id="L514"></span>
<span class="line" id="L515"> <span class="tok-kw">const</span> rm = std.c.pthread_mutex_destroy(&self.mutex);</span>
<span class="line" id="L516"> assert(rm == .SUCCESS <span class="tok-kw">or</span> rm == .INVAL);</span>
<span class="line" id="L517"></span>
<span class="line" id="L518"> self.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L519"> }</span>
<span class="line" id="L520"></span>
<span class="line" id="L521"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(self: *Event, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L522"> assert(std.c.pthread_mutex_lock(&self.mutex) == .SUCCESS);</span>
<span class="line" id="L523"> <span class="tok-kw">defer</span> assert(std.c.pthread_mutex_unlock(&self.mutex) == .SUCCESS);</span>
<span class="line" id="L524"></span>
<span class="line" id="L525"> <span class="tok-comment">// Early return if the event was already set.</span>
</span>
<span class="line" id="L526"> <span class="tok-kw">if</span> (self.state == .notified) {</span>
<span class="line" id="L527"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L528"> }</span>
<span class="line" id="L529"></span>
<span class="line" id="L530"> <span class="tok-comment">// Compute the absolute timeout if one was specified.</span>
</span>
<span class="line" id="L531"> <span class="tok-comment">// POSIX requires that REALTIME is used by default for the pthread timedwait functions.</span>
</span>
<span class="line" id="L532"> <span class="tok-comment">// This can be changed with pthread_condattr_setclock, but it's an extension and may not be available everywhere.</span>
</span>
<span class="line" id="L533"> <span class="tok-kw">var</span> ts: os.timespec = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L534"> <span class="tok-kw">if</span> (timeout) |timeout_ns| {</span>
<span class="line" id="L535"> os.clock_gettime(os.CLOCK.REALTIME, &ts) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L536"> ts.tv_sec +|= <span class="tok-builtin">@as</span>(<span class="tok-builtin">@TypeOf</span>(ts.tv_sec), <span class="tok-builtin">@intCast</span>(timeout_ns / std.time.ns_per_s));</span>
<span class="line" id="L537"> ts.tv_nsec += <span class="tok-builtin">@as</span>(<span class="tok-builtin">@TypeOf</span>(ts.tv_nsec), <span class="tok-builtin">@intCast</span>(timeout_ns % std.time.ns_per_s));</span>
<span class="line" id="L538"></span>
<span class="line" id="L539"> <span class="tok-kw">if</span> (ts.tv_nsec >= std.time.ns_per_s) {</span>
<span class="line" id="L540"> ts.tv_sec +|= <span class="tok-number">1</span>;</span>
<span class="line" id="L541"> ts.tv_nsec -= std.time.ns_per_s;</span>
<span class="line" id="L542"> }</span>
<span class="line" id="L543"> }</span>
<span class="line" id="L544"></span>
<span class="line" id="L545"> <span class="tok-comment">// Start waiting on the event - there can be only one thread waiting.</span>
</span>
<span class="line" id="L546"> assert(self.state == .empty);</span>
<span class="line" id="L547"> self.state = .waiting;</span>
<span class="line" id="L548"></span>
<span class="line" id="L549"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L550"> <span class="tok-comment">// Block using either pthread_cond_wait or pthread_cond_timewait if there's an absolute timeout.</span>
</span>
<span class="line" id="L551"> <span class="tok-kw">const</span> rc = blk: {</span>
<span class="line" id="L552"> <span class="tok-kw">if</span> (timeout == <span class="tok-null">null</span>) <span class="tok-kw">break</span> :blk std.c.pthread_cond_wait(&self.cond, &self.mutex);</span>
<span class="line" id="L553"> <span class="tok-kw">break</span> :blk std.c.pthread_cond_timedwait(&self.cond, &self.mutex, &ts);</span>
<span class="line" id="L554"> };</span>
<span class="line" id="L555"></span>
<span class="line" id="L556"> <span class="tok-comment">// After waking up, check if the event was set.</span>
</span>
<span class="line" id="L557"> <span class="tok-kw">if</span> (self.state == .notified) {</span>
<span class="line" id="L558"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L559"> }</span>
<span class="line" id="L560"></span>
<span class="line" id="L561"> assert(self.state == .waiting);</span>
<span class="line" id="L562"> <span class="tok-kw">switch</span> (rc) {</span>
<span class="line" id="L563"> .SUCCESS => {},</span>
<span class="line" id="L564"> .TIMEDOUT => {</span>
<span class="line" id="L565"> <span class="tok-comment">// If timed out, reset the event to avoid the set() thread doing an unnecessary signal().</span>
</span>
<span class="line" id="L566"> self.state = .empty;</span>
<span class="line" id="L567"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Timeout;</span>
<span class="line" id="L568"> },</span>
<span class="line" id="L569"> .INVAL => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// cond, mutex, and potentially ts should all be valid</span>
</span>
<span class="line" id="L570"> .PERM => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// mutex is locked when cond_*wait() functions are called</span>
</span>
<span class="line" id="L571"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L572"> }</span>
<span class="line" id="L573"> }</span>
<span class="line" id="L574"> }</span>
<span class="line" id="L575"></span>
<span class="line" id="L576"> <span class="tok-kw">fn</span> <span class="tok-fn">set</span>(self: *Event) <span class="tok-type">void</span> {</span>
<span class="line" id="L577"> assert(std.c.pthread_mutex_lock(&self.mutex) == .SUCCESS);</span>
<span class="line" id="L578"> <span class="tok-kw">defer</span> assert(std.c.pthread_mutex_unlock(&self.mutex) == .SUCCESS);</span>
<span class="line" id="L579"></span>
<span class="line" id="L580"> <span class="tok-comment">// Make sure that multiple calls to set() were not done on the same Event.</span>
</span>
<span class="line" id="L581"> <span class="tok-kw">const</span> old_state = self.state;</span>
<span class="line" id="L582"> assert(old_state != .notified);</span>
<span class="line" id="L583"></span>
<span class="line" id="L584"> <span class="tok-comment">// Mark the event as set and wake up the waiting thread if there was one.</span>
</span>
<span class="line" id="L585"> <span class="tok-comment">// This must be done while the mutex as the wait() thread could deallocate</span>
</span>
<span class="line" id="L586"> <span class="tok-comment">// the condition variable once it observes the new state, potentially causing a UAF if done unlocked.</span>
</span>
<span class="line" id="L587"> self.state = .notified;</span>
<span class="line" id="L588"> <span class="tok-kw">if</span> (old_state == .waiting) {</span>
<span class="line" id="L589"> assert(std.c.pthread_cond_signal(&self.cond) == .SUCCESS);</span>
<span class="line" id="L590"> }</span>
<span class="line" id="L591"> }</span>
<span class="line" id="L592"> };</span>
<span class="line" id="L593"></span>
<span class="line" id="L594"> <span class="tok-kw">const</span> Treap = std.Treap(<span class="tok-type">usize</span>, std.math.order);</span>
<span class="line" id="L595"> <span class="tok-kw">const</span> Waiter = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L596"> node: Treap.Node,</span>
<span class="line" id="L597"> prev: ?*Waiter,</span>
<span class="line" id="L598"> next: ?*Waiter,</span>
<span class="line" id="L599"> tail: ?*Waiter,</span>
<span class="line" id="L600"> is_queued: <span class="tok-type">bool</span>,</span>
<span class="line" id="L601"> event: Event,</span>
<span class="line" id="L602"> };</span>
<span class="line" id="L603"></span>
<span class="line" id="L604"> <span class="tok-comment">// An unordered set of Waiters</span>
</span>
<span class="line" id="L605"> <span class="tok-kw">const</span> WaitList = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L606"> top: ?*Waiter = <span class="tok-null">null</span>,</span>
<span class="line" id="L607"> len: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L608"></span>
<span class="line" id="L609"> <span class="tok-kw">fn</span> <span class="tok-fn">push</span>(self: *WaitList, waiter: *Waiter) <span class="tok-type">void</span> {</span>
<span class="line" id="L610"> waiter.next = self.top;</span>
<span class="line" id="L611"> self.top = waiter;</span>
<span class="line" id="L612"> self.len += <span class="tok-number">1</span>;</span>
<span class="line" id="L613"> }</span>
<span class="line" id="L614"></span>
<span class="line" id="L615"> <span class="tok-kw">fn</span> <span class="tok-fn">pop</span>(self: *WaitList) ?*Waiter {</span>
<span class="line" id="L616"> <span class="tok-kw">const</span> waiter = self.top <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L617"> self.top = waiter.next;</span>
<span class="line" id="L618"> self.len -= <span class="tok-number">1</span>;</span>
<span class="line" id="L619"> <span class="tok-kw">return</span> waiter;</span>
<span class="line" id="L620"> }</span>
<span class="line" id="L621"> };</span>
<span class="line" id="L622"></span>
<span class="line" id="L623"> <span class="tok-kw">const</span> WaitQueue = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L624"> <span class="tok-kw">fn</span> <span class="tok-fn">insert</span>(treap: *Treap, address: <span class="tok-type">usize</span>, waiter: *Waiter) <span class="tok-type">void</span> {</span>
<span class="line" id="L625"> <span class="tok-comment">// prepare the waiter to be inserted.</span>
</span>
<span class="line" id="L626"> waiter.next = <span class="tok-null">null</span>;</span>
<span class="line" id="L627"> waiter.is_queued = <span class="tok-null">true</span>;</span>
<span class="line" id="L628"></span>
<span class="line" id="L629"> <span class="tok-comment">// Find the wait queue entry associated with the address.</span>
</span>
<span class="line" id="L630"> <span class="tok-comment">// If there isn't a wait queue on the address, this waiter creates the queue.</span>
</span>
<span class="line" id="L631"> <span class="tok-kw">var</span> entry = treap.getEntryFor(address);</span>
<span class="line" id="L632"> <span class="tok-kw">const</span> entry_node = entry.node <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L633"> waiter.prev = <span class="tok-null">null</span>;</span>
<span class="line" id="L634"> waiter.tail = waiter;</span>
<span class="line" id="L635"> entry.set(&waiter.node);</span>
<span class="line" id="L636"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L637"> };</span>
<span class="line" id="L638"></span>
<span class="line" id="L639"> <span class="tok-comment">// There's a wait queue on the address; get the queue head and tail.</span>
</span>
<span class="line" id="L640"> <span class="tok-kw">const</span> head = <span class="tok-builtin">@fieldParentPtr</span>(Waiter, <span class="tok-str">"node"</span>, entry_node);</span>
<span class="line" id="L641"> <span class="tok-kw">const</span> tail = head.tail <span class="tok-kw">orelse</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L642"></span>
<span class="line" id="L643"> <span class="tok-comment">// Push the waiter to the tail by replacing it and linking to the previous tail.</span>
</span>
<span class="line" id="L644"> head.tail = waiter;</span>
<span class="line" id="L645"> tail.next = waiter;</span>
<span class="line" id="L646"> waiter.prev = tail;</span>
<span class="line" id="L647"> }</span>
<span class="line" id="L648"></span>
<span class="line" id="L649"> <span class="tok-kw">fn</span> <span class="tok-fn">remove</span>(treap: *Treap, address: <span class="tok-type">usize</span>, max_waiters: <span class="tok-type">usize</span>) WaitList {</span>
<span class="line" id="L650"> <span class="tok-comment">// Find the wait queue associated with this address and get the head/tail if any.</span>
</span>
<span class="line" id="L651"> <span class="tok-kw">var</span> entry = treap.getEntryFor(address);</span>
<span class="line" id="L652"> <span class="tok-kw">var</span> queue_head = <span class="tok-kw">if</span> (entry.node) |node| <span class="tok-builtin">@fieldParentPtr</span>(Waiter, <span class="tok-str">"node"</span>, node) <span class="tok-kw">else</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L653"> <span class="tok-kw">const</span> queue_tail = <span class="tok-kw">if</span> (queue_head) |head| head.tail <span class="tok-kw">else</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L654"></span>
<span class="line" id="L655"> <span class="tok-comment">// Once we're done updating the head, fix it's tail pointer and update the treap's queue head as well.</span>
</span>
<span class="line" id="L656"> <span class="tok-kw">defer</span> entry.set(blk: {</span>
<span class="line" id="L657"> <span class="tok-kw">const</span> new_head = queue_head <span class="tok-kw">orelse</span> <span class="tok-kw">break</span> :blk <span class="tok-null">null</span>;</span>
<span class="line" id="L658"> new_head.tail = queue_tail;</span>
<span class="line" id="L659"> <span class="tok-kw">break</span> :blk &new_head.node;</span>
<span class="line" id="L660"> });</span>
<span class="line" id="L661"></span>
<span class="line" id="L662"> <span class="tok-kw">var</span> removed = WaitList{};</span>
<span class="line" id="L663"> <span class="tok-kw">while</span> (removed.len < max_waiters) {</span>
<span class="line" id="L664"> <span class="tok-comment">// dequeue and collect waiters from their wait queue.</span>
</span>
<span class="line" id="L665"> <span class="tok-kw">const</span> waiter = queue_head <span class="tok-kw">orelse</span> <span class="tok-kw">break</span>;</span>
<span class="line" id="L666"> queue_head = waiter.next;</span>
<span class="line" id="L667"> removed.push(waiter);</span>
<span class="line" id="L668"></span>
<span class="line" id="L669"> <span class="tok-comment">// When dequeueing, we must mark is_queued as false.</span>
</span>
<span class="line" id="L670"> <span class="tok-comment">// This ensures that a waiter which calls tryRemove() returns false.</span>
</span>
<span class="line" id="L671"> assert(waiter.is_queued);</span>
<span class="line" id="L672"> waiter.is_queued = <span class="tok-null">false</span>;</span>
<span class="line" id="L673"> }</span>
<span class="line" id="L674"></span>
<span class="line" id="L675"> <span class="tok-kw">return</span> removed;</span>
<span class="line" id="L676"> }</span>
<span class="line" id="L677"></span>
<span class="line" id="L678"> <span class="tok-kw">fn</span> <span class="tok-fn">tryRemove</span>(treap: *Treap, address: <span class="tok-type">usize</span>, waiter: *Waiter) <span class="tok-type">bool</span> {</span>
<span class="line" id="L679"> <span class="tok-kw">if</span> (!waiter.is_queued) {</span>
<span class="line" id="L680"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L681"> }</span>
<span class="line" id="L682"></span>
<span class="line" id="L683"> queue_remove: {</span>
<span class="line" id="L684"> <span class="tok-comment">// Find the wait queue associated with the address.</span>
</span>
<span class="line" id="L685"> <span class="tok-kw">var</span> entry = blk: {</span>
<span class="line" id="L686"> <span class="tok-comment">// A waiter without a previous link means it's the queue head that's in the treap so we can avoid lookup.</span>
</span>
<span class="line" id="L687"> <span class="tok-kw">if</span> (waiter.prev == <span class="tok-null">null</span>) {</span>
<span class="line" id="L688"> assert(waiter.node.key == address);</span>
<span class="line" id="L689"> <span class="tok-kw">break</span> :blk treap.getEntryForExisting(&waiter.node);</span>
<span class="line" id="L690"> }</span>
<span class="line" id="L691"> <span class="tok-kw">break</span> :blk treap.getEntryFor(address);</span>
<span class="line" id="L692"> };</span>
<span class="line" id="L693"></span>
<span class="line" id="L694"> <span class="tok-comment">// The queue head and tail must exist if we're removing a queued waiter.</span>
</span>
<span class="line" id="L695"> <span class="tok-kw">const</span> head = <span class="tok-builtin">@fieldParentPtr</span>(Waiter, <span class="tok-str">"node"</span>, entry.node <span class="tok-kw">orelse</span> <span class="tok-kw">unreachable</span>);</span>
<span class="line" id="L696"> <span class="tok-kw">const</span> tail = head.tail <span class="tok-kw">orelse</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L697"></span>
<span class="line" id="L698"> <span class="tok-comment">// A waiter with a previous link is never the head of the queue.</span>
</span>
<span class="line" id="L699"> <span class="tok-kw">if</span> (waiter.prev) |prev| {</span>
<span class="line" id="L700"> assert(waiter != head);</span>
<span class="line" id="L701"> prev.next = waiter.next;</span>
<span class="line" id="L702"></span>
<span class="line" id="L703"> <span class="tok-comment">// A waiter with both a previous and next link is in the middle.</span>
</span>
<span class="line" id="L704"> <span class="tok-comment">// We only need to update the surrounding waiter's links to remove it.</span>
</span>
<span class="line" id="L705"> <span class="tok-kw">if</span> (waiter.next) |next| {</span>
<span class="line" id="L706"> assert(waiter != tail);</span>
<span class="line" id="L707"> next.prev = waiter.prev;</span>
<span class="line" id="L708"> <span class="tok-kw">break</span> :queue_remove;</span>
<span class="line" id="L709"> }</span>
<span class="line" id="L710"></span>
<span class="line" id="L711"> <span class="tok-comment">// A waiter with a previous but no next link means it's the tail of the queue.</span>
</span>
<span class="line" id="L712"> <span class="tok-comment">// In that case, we need to update the head's tail reference.</span>
</span>
<span class="line" id="L713"> assert(waiter == tail);</span>
<span class="line" id="L714"> head.tail = waiter.prev;</span>
<span class="line" id="L715"> <span class="tok-kw">break</span> :queue_remove;</span>
<span class="line" id="L716"> }</span>
<span class="line" id="L717"></span>
<span class="line" id="L718"> <span class="tok-comment">// A waiter with no previous link means it's the queue head of queue.</span>
</span>
<span class="line" id="L719"> <span class="tok-comment">// We must replace (or remove) the head waiter reference in the treap.</span>
</span>
<span class="line" id="L720"> assert(waiter == head);</span>
<span class="line" id="L721"> entry.set(blk: {</span>
<span class="line" id="L722"> <span class="tok-kw">const</span> new_head = waiter.next <span class="tok-kw">orelse</span> <span class="tok-kw">break</span> :blk <span class="tok-null">null</span>;</span>
<span class="line" id="L723"> new_head.tail = head.tail;</span>
<span class="line" id="L724"> <span class="tok-kw">break</span> :blk &new_head.node;</span>
<span class="line" id="L725"> });</span>
<span class="line" id="L726"> }</span>
<span class="line" id="L727"></span>
<span class="line" id="L728"> <span class="tok-comment">// Mark the waiter as successfully removed.</span>
</span>
<span class="line" id="L729"> waiter.is_queued = <span class="tok-null">false</span>;</span>
<span class="line" id="L730"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L731"> }</span>
<span class="line" id="L732"> };</span>
<span class="line" id="L733"></span>
<span class="line" id="L734"> <span class="tok-kw">const</span> Bucket = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L735"> mutex: std.c.pthread_mutex_t <span class="tok-kw">align</span>(std.atomic.cache_line) = .{},</span>
<span class="line" id="L736"> pending: Atomic(<span class="tok-type">usize</span>) = Atomic(<span class="tok-type">usize</span>).init(<span class="tok-number">0</span>),</span>
<span class="line" id="L737"> treap: Treap = .{},</span>
<span class="line" id="L738"></span>
<span class="line" id="L739"> <span class="tok-comment">// Global array of buckets that addresses map to.</span>
</span>
<span class="line" id="L740"> <span class="tok-comment">// Bucket array size is pretty much arbitrary here, but it must be a power of two for fibonacci hashing.</span>
</span>
<span class="line" id="L741"> <span class="tok-kw">var</span> buckets = [_]Bucket{.{}} ** <span class="tok-builtin">@bitSizeOf</span>(<span class="tok-type">usize</span>);</span>
<span class="line" id="L742"></span>
<span class="line" id="L743"> <span class="tok-comment">// https://github.com/Amanieu/parking_lot/blob/1cf12744d097233316afa6c8b7d37389e4211756/core/src/parking_lot.rs#L343-L353</span>
</span>
<span class="line" id="L744"> <span class="tok-kw">fn</span> <span class="tok-fn">from</span>(address: <span class="tok-type">usize</span>) *Bucket {</span>
<span class="line" id="L745"> <span class="tok-comment">// The upper `@bitSizeOf(usize)` bits of the fibonacci golden ratio.</span>
</span>
<span class="line" id="L746"> <span class="tok-comment">// Hashing this via (h * k) >> (64 - b) where k=golden-ration and b=bitsize-of-array</span>
</span>
<span class="line" id="L747"> <span class="tok-comment">// evenly lays out h=hash values over the bit range even when the hash has poor entropy (identity-hash for pointers).</span>
</span>
<span class="line" id="L748"> <span class="tok-kw">const</span> max_multiplier_bits = <span class="tok-builtin">@bitSizeOf</span>(<span class="tok-type">usize</span>);</span>
<span class="line" id="L749"> <span class="tok-kw">const</span> fibonacci_multiplier = <span class="tok-number">0x9E3779B97F4A7C15</span> >> (<span class="tok-number">64</span> - max_multiplier_bits);</span>
<span class="line" id="L750"></span>
<span class="line" id="L751"> <span class="tok-kw">const</span> max_bucket_bits = <span class="tok-builtin">@ctz</span>(buckets.len);</span>
<span class="line" id="L752"> <span class="tok-kw">comptime</span> assert(std.math.isPowerOfTwo(buckets.len));</span>
<span class="line" id="L753"></span>
<span class="line" id="L754"> <span class="tok-kw">const</span> index = (address *% fibonacci_multiplier) >> (max_multiplier_bits - max_bucket_bits);</span>
<span class="line" id="L755"> <span class="tok-kw">return</span> &buckets[index];</span>
<span class="line" id="L756"> }</span>
<span class="line" id="L757"> };</span>
<span class="line" id="L758"></span>
<span class="line" id="L759"> <span class="tok-kw">const</span> Address = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L760"> <span class="tok-kw">fn</span> <span class="tok-fn">from</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>)) <span class="tok-type">usize</span> {</span>
<span class="line" id="L761"> <span class="tok-comment">// Get the alignment of the pointer.</span>
</span>
<span class="line" id="L762"> <span class="tok-kw">const</span> alignment = <span class="tok-builtin">@alignOf</span>(Atomic(<span class="tok-type">u32</span>));</span>
<span class="line" id="L763"> <span class="tok-kw">comptime</span> assert(std.math.isPowerOfTwo(alignment));</span>
<span class="line" id="L764"></span>
<span class="line" id="L765"> <span class="tok-comment">// Make sure the pointer is aligned,</span>
</span>
<span class="line" id="L766"> <span class="tok-comment">// then cut off the zero bits from the alignment to get the unique address.</span>
</span>
<span class="line" id="L767"> <span class="tok-kw">const</span> addr = <span class="tok-builtin">@intFromPtr</span>(ptr);</span>
<span class="line" id="L768"> assert(addr & (alignment - <span class="tok-number">1</span>) == <span class="tok-number">0</span>);</span>
<span class="line" id="L769"> <span class="tok-kw">return</span> addr >> <span class="tok-builtin">@ctz</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, alignment));</span>
<span class="line" id="L770"> }</span>
<span class="line" id="L771"> };</span>
<span class="line" id="L772"></span>
<span class="line" id="L773"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), expect: <span class="tok-type">u32</span>, timeout: ?<span class="tok-type">u64</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L774"> <span class="tok-kw">const</span> address = Address.from(ptr);</span>
<span class="line" id="L775"> <span class="tok-kw">const</span> bucket = Bucket.from(address);</span>
<span class="line" id="L776"></span>
<span class="line" id="L777"> <span class="tok-comment">// Announce that there's a waiter in the bucket before checking the ptr/expect condition.</span>
</span>
<span class="line" id="L778"> <span class="tok-comment">// If the announcement is reordered after the ptr check, the waiter could deadlock:</span>
</span>
<span class="line" id="L779"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L780"> <span class="tok-comment">// - T1: checks ptr == expect which is true</span>
</span>
<span class="line" id="L781"> <span class="tok-comment">// - T2: updates ptr to != expect</span>
</span>
<span class="line" id="L782"> <span class="tok-comment">// - T2: does Futex.wake(), sees no pending waiters, exits</span>
</span>
<span class="line" id="L783"> <span class="tok-comment">// - T1: bumps pending waiters (was reordered after the ptr == expect check)</span>
</span>
<span class="line" id="L784"> <span class="tok-comment">// - T1: goes to sleep and misses both the ptr change and T2's wake up</span>
</span>
<span class="line" id="L785"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L786"> <span class="tok-comment">// SeqCst as Acquire barrier to ensure the announcement happens before the ptr check below.</span>
</span>
<span class="line" id="L787"> <span class="tok-comment">// SeqCst as shared modification order to form a happens-before edge with the fence(.SeqCst)+load() in wake().</span>
</span>
<span class="line" id="L788"> <span class="tok-kw">var</span> pending = bucket.pending.fetchAdd(<span class="tok-number">1</span>, .SeqCst);</span>
<span class="line" id="L789"> assert(pending < std.math.maxInt(<span class="tok-type">usize</span>));</span>
<span class="line" id="L790"></span>
<span class="line" id="L791"> <span class="tok-comment">// If the wait gets cancelled, remove the pending count we previously added.</span>
</span>
<span class="line" id="L792"> <span class="tok-comment">// This is done outside the mutex lock to keep the critical section short in case of contention.</span>
</span>
<span class="line" id="L793"> <span class="tok-kw">var</span> cancelled = <span class="tok-null">false</span>;</span>
<span class="line" id="L794"> <span class="tok-kw">defer</span> <span class="tok-kw">if</span> (cancelled) {</span>
<span class="line" id="L795"> pending = bucket.pending.fetchSub(<span class="tok-number">1</span>, .Monotonic);</span>
<span class="line" id="L796"> assert(pending > <span class="tok-number">0</span>);</span>
<span class="line" id="L797"> };</span>
<span class="line" id="L798"></span>
<span class="line" id="L799"> <span class="tok-kw">var</span> waiter: Waiter = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L800"> {</span>
<span class="line" id="L801"> assert(std.c.pthread_mutex_lock(&bucket.mutex) == .SUCCESS);</span>
<span class="line" id="L802"> <span class="tok-kw">defer</span> assert(std.c.pthread_mutex_unlock(&bucket.mutex) == .SUCCESS);</span>
<span class="line" id="L803"></span>
<span class="line" id="L804"> cancelled = ptr.load(.Monotonic) != expect;</span>
<span class="line" id="L805"> <span class="tok-kw">if</span> (cancelled) {</span>
<span class="line" id="L806"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L807"> }</span>
<span class="line" id="L808"></span>
<span class="line" id="L809"> waiter.event.init();</span>
<span class="line" id="L810"> WaitQueue.insert(&bucket.treap, address, &waiter);</span>
<span class="line" id="L811"> }</span>
<span class="line" id="L812"></span>
<span class="line" id="L813"> <span class="tok-kw">defer</span> {</span>
<span class="line" id="L814"> assert(!waiter.is_queued);</span>
<span class="line" id="L815"> waiter.event.deinit();</span>
<span class="line" id="L816"> }</span>
<span class="line" id="L817"></span>
<span class="line" id="L818"> waiter.event.wait(timeout) <span class="tok-kw">catch</span> {</span>
<span class="line" id="L819"> <span class="tok-comment">// If we fail to cancel after a timeout, it means a wake() thread dequeued us and will wake us up.</span>
</span>
<span class="line" id="L820"> <span class="tok-comment">// We must wait until the event is set as that's a signal that the wake() thread won't access the waiter memory anymore.</span>
</span>
<span class="line" id="L821"> <span class="tok-comment">// If we return early without waiting, the waiter on the stack would be invalidated and the wake() thread risks a UAF.</span>
</span>
<span class="line" id="L822"> <span class="tok-kw">defer</span> <span class="tok-kw">if</span> (!cancelled) waiter.event.wait(<span class="tok-null">null</span>) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L823"></span>
<span class="line" id="L824"> assert(std.c.pthread_mutex_lock(&bucket.mutex) == .SUCCESS);</span>
<span class="line" id="L825"> <span class="tok-kw">defer</span> assert(std.c.pthread_mutex_unlock(&bucket.mutex) == .SUCCESS);</span>
<span class="line" id="L826"></span>
<span class="line" id="L827"> cancelled = WaitQueue.tryRemove(&bucket.treap, address, &waiter);</span>
<span class="line" id="L828"> <span class="tok-kw">if</span> (cancelled) {</span>
<span class="line" id="L829"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Timeout;</span>
<span class="line" id="L830"> }</span>
<span class="line" id="L831"> };</span>
<span class="line" id="L832"> }</span>
<span class="line" id="L833"></span>
<span class="line" id="L834"> <span class="tok-kw">fn</span> <span class="tok-fn">wake</span>(ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), max_waiters: <span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L835"> <span class="tok-kw">const</span> address = Address.from(ptr);</span>
<span class="line" id="L836"> <span class="tok-kw">const</span> bucket = Bucket.from(address);</span>
<span class="line" id="L837"></span>
<span class="line" id="L838"> <span class="tok-comment">// Quick check if there's even anything to wake up.</span>
</span>
<span class="line" id="L839"> <span class="tok-comment">// The change to the ptr's value must happen before we check for pending waiters.</span>
</span>
<span class="line" id="L840"> <span class="tok-comment">// If not, the wake() thread could miss a sleeping waiter and have it deadlock:</span>
</span>
<span class="line" id="L841"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L842"> <span class="tok-comment">// - T2: p = has pending waiters (reordered before the ptr update)</span>
</span>
<span class="line" id="L843"> <span class="tok-comment">// - T1: bump pending waiters</span>
</span>
<span class="line" id="L844"> <span class="tok-comment">// - T1: if ptr == expected: sleep()</span>
</span>
<span class="line" id="L845"> <span class="tok-comment">// - T2: update ptr != expected</span>
</span>
<span class="line" id="L846"> <span class="tok-comment">// - T2: p is false from earlier so doesn't wake (T1 missed ptr update and T2 missed T1 sleeping)</span>
</span>
<span class="line" id="L847"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L848"> <span class="tok-comment">// What we really want here is a Release load, but that doesn't exist under the C11 memory model.</span>
</span>
<span class="line" id="L849"> <span class="tok-comment">// We could instead do `bucket.pending.fetchAdd(0, Release) == 0` which achieves effectively the same thing,</span>
</span>
<span class="line" id="L850"> <span class="tok-comment">// but the RMW operation unconditionally marks the cache-line as modified for others causing unnecessary fetching/contention.</span>
</span>
<span class="line" id="L851"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L852"> <span class="tok-comment">// Instead we opt to do a full-fence + load instead which avoids taking ownership of the cache-line.</span>
</span>
<span class="line" id="L853"> <span class="tok-comment">// fence(SeqCst) effectively converts the ptr update to SeqCst and the pending load to SeqCst: creating a Store-Load barrier.</span>
</span>
<span class="line" id="L854"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L855"> <span class="tok-comment">// The pending count increment in wait() must also now use SeqCst for the update + this pending load</span>
</span>
<span class="line" id="L856"> <span class="tok-comment">// to be in the same modification order as our load isn't using Release/Acquire to guarantee it.</span>
</span>
<span class="line" id="L857"> bucket.pending.fence(.SeqCst);</span>
<span class="line" id="L858"> <span class="tok-kw">if</span> (bucket.pending.load(.Monotonic) == <span class="tok-number">0</span>) {</span>
<span class="line" id="L859"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L860"> }</span>
<span class="line" id="L861"></span>
<span class="line" id="L862"> <span class="tok-comment">// Keep a list of all the waiters notified and wake then up outside the mutex critical section.</span>
</span>
<span class="line" id="L863"> <span class="tok-kw">var</span> notified = WaitList{};</span>
<span class="line" id="L864"> <span class="tok-kw">defer</span> <span class="tok-kw">if</span> (notified.len > <span class="tok-number">0</span>) {</span>
<span class="line" id="L865"> <span class="tok-kw">const</span> pending = bucket.pending.fetchSub(notified.len, .Monotonic);</span>
<span class="line" id="L866"> assert(pending >= notified.len);</span>
<span class="line" id="L867"></span>
<span class="line" id="L868"> <span class="tok-kw">while</span> (notified.pop()) |waiter| {</span>
<span class="line" id="L869"> assert(!waiter.is_queued);</span>
<span class="line" id="L870"> waiter.event.set();</span>
<span class="line" id="L871"> }</span>
<span class="line" id="L872"> };</span>
<span class="line" id="L873"></span>
<span class="line" id="L874"> assert(std.c.pthread_mutex_lock(&bucket.mutex) == .SUCCESS);</span>
<span class="line" id="L875"> <span class="tok-kw">defer</span> assert(std.c.pthread_mutex_unlock(&bucket.mutex) == .SUCCESS);</span>
<span class="line" id="L876"></span>
<span class="line" id="L877"> <span class="tok-comment">// Another pending check again to avoid the WaitQueue lookup if not necessary.</span>
</span>
<span class="line" id="L878"> <span class="tok-kw">if</span> (bucket.pending.load(.Monotonic) > <span class="tok-number">0</span>) {</span>
<span class="line" id="L879"> notified = WaitQueue.remove(&bucket.treap, address, max_waiters);</span>
<span class="line" id="L880"> }</span>
<span class="line" id="L881"> }</span>
<span class="line" id="L882">};</span>
<span class="line" id="L883"></span>
<span class="line" id="L884"><span class="tok-kw">test</span> <span class="tok-str">"Futex - smoke test"</span> {</span>
<span class="line" id="L885"> <span class="tok-kw">var</span> value = Atomic(<span class="tok-type">u32</span>).init(<span class="tok-number">0</span>);</span>
<span class="line" id="L886"></span>
<span class="line" id="L887"> <span class="tok-comment">// Try waits with invalid values.</span>
</span>
<span class="line" id="L888"> Futex.wait(&value, <span class="tok-number">0xdeadbeef</span>);</span>
<span class="line" id="L889"> Futex.timedWait(&value, <span class="tok-number">0xdeadbeef</span>, <span class="tok-number">0</span>) <span class="tok-kw">catch</span> {};</span>
<span class="line" id="L890"></span>
<span class="line" id="L891"> <span class="tok-comment">// Try timeout waits.</span>
</span>
<span class="line" id="L892"> <span class="tok-kw">try</span> testing.expectError(<span class="tok-kw">error</span>.Timeout, Futex.timedWait(&value, <span class="tok-number">0</span>, <span class="tok-number">0</span>));</span>
<span class="line" id="L893"> <span class="tok-kw">try</span> testing.expectError(<span class="tok-kw">error</span>.Timeout, Futex.timedWait(&value, <span class="tok-number">0</span>, std.time.ns_per_ms));</span>
<span class="line" id="L894"></span>
<span class="line" id="L895"> <span class="tok-comment">// Try wakes</span>
</span>
<span class="line" id="L896"> Futex.wake(&value, <span class="tok-number">0</span>);</span>
<span class="line" id="L897"> Futex.wake(&value, <span class="tok-number">1</span>);</span>
<span class="line" id="L898"> Futex.wake(&value, std.math.maxInt(<span class="tok-type">u32</span>));</span>
<span class="line" id="L899">}</span>
<span class="line" id="L900"></span>
<span class="line" id="L901"><span class="tok-kw">test</span> <span class="tok-str">"Futex - signaling"</span> {</span>
<span class="line" id="L902"> <span class="tok-comment">// This test requires spawning threads</span>
</span>
<span class="line" id="L903"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L904"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L905"> }</span>
<span class="line" id="L906"></span>
<span class="line" id="L907"> <span class="tok-kw">const</span> num_threads = <span class="tok-number">4</span>;</span>
<span class="line" id="L908"> <span class="tok-kw">const</span> num_iterations = <span class="tok-number">4</span>;</span>
<span class="line" id="L909"></span>
<span class="line" id="L910"> <span class="tok-kw">const</span> Paddle = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L911"> value: Atomic(<span class="tok-type">u32</span>) = Atomic(<span class="tok-type">u32</span>).init(<span class="tok-number">0</span>),</span>
<span class="line" id="L912"> current: <span class="tok-type">u32</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L913"></span>
<span class="line" id="L914"> <span class="tok-kw">fn</span> <span class="tok-fn">hit</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L915"> _ = self.value.fetchAdd(<span class="tok-number">1</span>, .Release);</span>
<span class="line" id="L916"> Futex.wake(&self.value, <span class="tok-number">1</span>);</span>
<span class="line" id="L917"> }</span>
<span class="line" id="L918"></span>
<span class="line" id="L919"> <span class="tok-kw">fn</span> <span class="tok-fn">run</span>(self: *<span class="tok-builtin">@This</span>(), hit_to: *<span class="tok-builtin">@This</span>()) !<span class="tok-type">void</span> {</span>
<span class="line" id="L920"> <span class="tok-kw">while</span> (self.current < num_iterations) {</span>
<span class="line" id="L921"> <span class="tok-comment">// Wait for the value to change from hit()</span>
</span>
<span class="line" id="L922"> <span class="tok-kw">var</span> new_value: <span class="tok-type">u32</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L923"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L924"> new_value = self.value.load(.Acquire);</span>
<span class="line" id="L925"> <span class="tok-kw">if</span> (new_value != self.current) <span class="tok-kw">break</span>;</span>
<span class="line" id="L926"> Futex.wait(&self.value, self.current);</span>
<span class="line" id="L927"> }</span>
<span class="line" id="L928"></span>
<span class="line" id="L929"> <span class="tok-comment">// change the internal "current" value</span>
</span>
<span class="line" id="L930"> <span class="tok-kw">try</span> testing.expectEqual(new_value, self.current + <span class="tok-number">1</span>);</span>
<span class="line" id="L931"> self.current = new_value;</span>
<span class="line" id="L932"></span>
<span class="line" id="L933"> <span class="tok-comment">// hit the next paddle</span>
</span>
<span class="line" id="L934"> hit_to.hit();</span>
<span class="line" id="L935"> }</span>
<span class="line" id="L936"> }</span>
<span class="line" id="L937"> };</span>
<span class="line" id="L938"></span>
<span class="line" id="L939"> <span class="tok-kw">var</span> paddles = [_]Paddle{.{}} ** num_threads;</span>
<span class="line" id="L940"> <span class="tok-kw">var</span> threads = [_]std.Thread{<span class="tok-null">undefined</span>} ** num_threads;</span>
<span class="line" id="L941"></span>
<span class="line" id="L942"> <span class="tok-comment">// Create a circle of paddles which hit each other</span>
</span>
<span class="line" id="L943"> <span class="tok-kw">for</span> (&threads, <span class="tok-number">0</span>..) |*t, i| {</span>
<span class="line" id="L944"> <span class="tok-kw">const</span> paddle = &paddles[i];</span>
<span class="line" id="L945"> <span class="tok-kw">const</span> hit_to = &paddles[(i + <span class="tok-number">1</span>) % paddles.len];</span>
<span class="line" id="L946"> t.* = <span class="tok-kw">try</span> std.Thread.spawn(.{}, Paddle.run, .{ paddle, hit_to });</span>
<span class="line" id="L947"> }</span>
<span class="line" id="L948"></span>
<span class="line" id="L949"> <span class="tok-comment">// Hit the first paddle and wait for them all to complete by hitting each other for num_iterations.</span>
</span>
<span class="line" id="L950"> paddles[<span class="tok-number">0</span>].hit();</span>
<span class="line" id="L951"> <span class="tok-kw">for</span> (threads) |t| t.join();</span>
<span class="line" id="L952"> <span class="tok-kw">for</span> (paddles) |p| <span class="tok-kw">try</span> testing.expectEqual(p.current, num_iterations);</span>
<span class="line" id="L953">}</span>
<span class="line" id="L954"></span>
<span class="line" id="L955"><span class="tok-kw">test</span> <span class="tok-str">"Futex - broadcasting"</span> {</span>
<span class="line" id="L956"> <span class="tok-comment">// This test requires spawning threads</span>
</span>
<span class="line" id="L957"> <span class="tok-kw">if</span> (builtin.single_threaded) {</span>
<span class="line" id="L958"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L959"> }</span>
<span class="line" id="L960"></span>
<span class="line" id="L961"> <span class="tok-kw">const</span> num_threads = <span class="tok-number">4</span>;</span>
<span class="line" id="L962"> <span class="tok-kw">const</span> num_iterations = <span class="tok-number">4</span>;</span>
<span class="line" id="L963"></span>
<span class="line" id="L964"> <span class="tok-kw">const</span> Barrier = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L965"> count: Atomic(<span class="tok-type">u32</span>) = Atomic(<span class="tok-type">u32</span>).init(num_threads),</span>
<span class="line" id="L966"> futex: Atomic(<span class="tok-type">u32</span>) = Atomic(<span class="tok-type">u32</span>).init(<span class="tok-number">0</span>),</span>
<span class="line" id="L967"></span>
<span class="line" id="L968"> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(self: *<span class="tok-builtin">@This</span>()) !<span class="tok-type">void</span> {</span>
<span class="line" id="L969"> <span class="tok-comment">// Decrement the counter.</span>
</span>
<span class="line" id="L970"> <span class="tok-comment">// Release ensures stuff before this barrier.wait() happens before the last one.</span>
</span>
<span class="line" id="L971"> <span class="tok-kw">const</span> count = self.count.fetchSub(<span class="tok-number">1</span>, .Release);</span>
<span class="line" id="L972"> <span class="tok-kw">try</span> testing.expect(count <= num_threads);</span>
<span class="line" id="L973"> <span class="tok-kw">try</span> testing.expect(count > <span class="tok-number">0</span>);</span>
<span class="line" id="L974"></span>
<span class="line" id="L975"> <span class="tok-comment">// First counter to reach zero wakes all other threads.</span>
</span>
<span class="line" id="L976"> <span class="tok-comment">// Acquire for the last counter ensures stuff before previous barrier.wait()s happened before it.</span>
</span>
<span class="line" id="L977"> <span class="tok-comment">// Release on futex update ensures stuff before all barrier.wait()'s happens before they all return.</span>
</span>
<span class="line" id="L978"> <span class="tok-kw">if</span> (count - <span class="tok-number">1</span> == <span class="tok-number">0</span>) {</span>
<span class="line" id="L979"> _ = self.count.load(.Acquire); <span class="tok-comment">// TODO: could be fence(Acquire) if not for TSAN</span>
</span>
<span class="line" id="L980"> self.futex.store(<span class="tok-number">1</span>, .Release);</span>
<span class="line" id="L981"> Futex.wake(&self.futex, num_threads - <span class="tok-number">1</span>);</span>
<span class="line" id="L982"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L983"> }</span>
<span class="line" id="L984"></span>
<span class="line" id="L985"> <span class="tok-comment">// Other threads wait until last counter wakes them up.</span>
</span>
<span class="line" id="L986"> <span class="tok-comment">// Acquire on futex synchronizes with last barrier count to ensure stuff before all barrier.wait()'s happen before us.</span>
</span>
<span class="line" id="L987"> <span class="tok-kw">while</span> (self.futex.load(.Acquire) == <span class="tok-number">0</span>) {</span>
<span class="line" id="L988"> Futex.wait(&self.futex, <span class="tok-number">0</span>);</span>
<span class="line" id="L989"> }</span>
<span class="line" id="L990"> }</span>
<span class="line" id="L991"> };</span>
<span class="line" id="L992"></span>
<span class="line" id="L993"> <span class="tok-kw">const</span> Broadcast = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L994"> barriers: [num_iterations]Barrier = [_]Barrier{.{}} ** num_iterations,</span>
<span class="line" id="L995"> threads: [num_threads]std.Thread = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L996"></span>
<span class="line" id="L997"> <span class="tok-kw">fn</span> <span class="tok-fn">run</span>(self: *<span class="tok-builtin">@This</span>()) !<span class="tok-type">void</span> {</span>
<span class="line" id="L998"> <span class="tok-kw">for</span> (&self.barriers) |*barrier| {</span>
<span class="line" id="L999"> <span class="tok-kw">try</span> barrier.wait();</span>
<span class="line" id="L1000"> }</span>
<span class="line" id="L1001"> }</span>
<span class="line" id="L1002"> };</span>
<span class="line" id="L1003"></span>
<span class="line" id="L1004"> <span class="tok-kw">var</span> broadcast = Broadcast{};</span>
<span class="line" id="L1005"> <span class="tok-kw">for</span> (&broadcast.threads) |*t| t.* = <span class="tok-kw">try</span> std.Thread.spawn(.{}, Broadcast.run, .{&broadcast});</span>
<span class="line" id="L1006"> <span class="tok-kw">for</span> (broadcast.threads) |t| t.join();</span>
<span class="line" id="L1007">}</span>
<span class="line" id="L1008"></span>
<span class="line" id="L1009"><span class="tok-comment">/// Deadline is used to wait efficiently for a pointer's value to change using Futex and a fixed timeout.</span></span>
<span class="line" id="L1010"><span class="tok-comment">///</span></span>
<span class="line" id="L1011"><span class="tok-comment">/// Futex's timedWait() api uses a relative duration which suffers from over-waiting</span></span>
<span class="line" id="L1012"><span class="tok-comment">/// when used in a loop which is often required due to the possibility of spurious wakeups.</span></span>
<span class="line" id="L1013"><span class="tok-comment">///</span></span>
<span class="line" id="L1014"><span class="tok-comment">/// Deadline instead converts the relative timeout to an absolute one so that multiple calls</span></span>
<span class="line" id="L1015"><span class="tok-comment">/// to Futex timedWait() can block for and report more accurate error.Timeouts.</span></span>
<span class="line" id="L1016"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Deadline = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1017"> timeout: ?<span class="tok-type">u64</span>,</span>
<span class="line" id="L1018"> started: std.time.Timer,</span>
<span class="line" id="L1019"></span>
<span class="line" id="L1020"> <span class="tok-comment">/// Create the deadline to expire after the given amount of time in nanoseconds passes.</span></span>
<span class="line" id="L1021"> <span class="tok-comment">/// Pass in `null` to have the deadline call `Futex.wait()` and never expire.</span></span>
<span class="line" id="L1022"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(expires_in_ns: ?<span class="tok-type">u64</span>) Deadline {</span>
<span class="line" id="L1023"> <span class="tok-kw">var</span> deadline: Deadline = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L1024"> deadline.timeout = expires_in_ns;</span>
<span class="line" id="L1025"></span>
<span class="line" id="L1026"> <span class="tok-comment">// std.time.Timer is required to be supported for somewhat accurate reportings of error.Timeout.</span>
</span>
<span class="line" id="L1027"> <span class="tok-kw">if</span> (deadline.timeout != <span class="tok-null">null</span>) {</span>
<span class="line" id="L1028"> deadline.started = std.time.Timer.start() <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L1029"> }</span>
<span class="line" id="L1030"></span>
<span class="line" id="L1031"> <span class="tok-kw">return</span> deadline;</span>
<span class="line" id="L1032"> }</span>
<span class="line" id="L1033"></span>
<span class="line" id="L1034"> <span class="tok-comment">/// Wait until either:</span></span>
<span class="line" id="L1035"> <span class="tok-comment">/// - the `ptr`'s value changes from `expect`.</span></span>
<span class="line" id="L1036"> <span class="tok-comment">/// - `Futex.wake()` is called on the `ptr`.</span></span>
<span class="line" id="L1037"> <span class="tok-comment">/// - A spurious wake occurs.</span></span>
<span class="line" id="L1038"> <span class="tok-comment">/// - The deadline expires; In which case `error.Timeout` is returned.</span></span>
<span class="line" id="L1039"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">wait</span>(self: *Deadline, ptr: *<span class="tok-kw">const</span> Atomic(<span class="tok-type">u32</span>), expect: <span class="tok-type">u32</span>) <span class="tok-kw">error</span>{Timeout}!<span class="tok-type">void</span> {</span>
<span class="line" id="L1040"> <span class="tok-builtin">@setCold</span>(<span class="tok-null">true</span>);</span>
<span class="line" id="L1041"></span>
<span class="line" id="L1042"> <span class="tok-comment">// Check if we actually have a timeout to wait until.</span>
</span>
<span class="line" id="L1043"> <span class="tok-comment">// If not just wait "forever".</span>
</span>
<span class="line" id="L1044"> <span class="tok-kw">const</span> timeout_ns = self.timeout <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L1045"> <span class="tok-kw">return</span> Futex.wait(ptr, expect);</span>
<span class="line" id="L1046"> };</span>
<span class="line" id="L1047"></span>
<span class="line" id="L1048"> <span class="tok-comment">// Get how much time has passed since we started waiting</span>
</span>
<span class="line" id="L1049"> <span class="tok-comment">// then subtract that from the init() timeout to get how much longer to wait.</span>
</span>
<span class="line" id="L1050"> <span class="tok-comment">// Use overflow to detect when we've been waiting longer than the init() timeout.</span>
</span>
<span class="line" id="L1051"> <span class="tok-kw">const</span> elapsed_ns = self.started.read();</span>
<span class="line" id="L1052"> <span class="tok-kw">const</span> until_timeout_ns = std.math.sub(<span class="tok-type">u64</span>, timeout_ns, elapsed_ns) <span class="tok-kw">catch</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L1053"> <span class="tok-kw">return</span> Futex.timedWait(ptr, expect, until_timeout_ns);</span>
<span class="line" id="L1054"> }</span>
<span class="line" id="L1055">};</span>
<span class="line" id="L1056"></span>
<span class="line" id="L1057"><span class="tok-kw">test</span> <span class="tok-str">"Futex - Deadline"</span> {</span>
<span class="line" id="L1058"> <span class="tok-kw">var</span> deadline = Deadline.init(<span class="tok-number">100</span> * std.time.ns_per_ms);</span>
<span class="line" id="L1059"> <span class="tok-kw">var</span> futex_word = Atomic(<span class="tok-type">u32</span>).init(<span class="tok-number">0</span>);</span>
<span class="line" id="L1060"></span>
<span class="line" id="L1061"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1062"> deadline.wait(&futex_word, <span class="tok-number">0</span>) <span class="tok-kw">catch</span> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1063"> }</span>
<span class="line" id="L1064">}</span>
<span class="line" id="L1065"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! Implements ZIGNOR [1].</span></span>
<span class="line" id="L2"><span class="tok-comment">//!</span></span>
<span class="line" id="L3"><span class="tok-comment">//! [1]: Jurgen A. Doornik (2005). [*An Improved Ziggurat Method to Generate Normal Random Samples*]</span></span>
<span class="line" id="L4"><span class="tok-comment">//! (https://www.doornik.com/research/ziggurat.pdf). Nuffield College, Oxford.</span></span>
<span class="line" id="L5"><span class="tok-comment">//!</span></span>
<span class="line" id="L6"><span class="tok-comment">//! rust/rand used as a reference;</span></span>
<span class="line" id="L7"><span class="tok-comment">//!</span></span>
<span class="line" id="L8"><span class="tok-comment">//! NOTE: This seems interesting but reference code is a bit hard to grok:</span></span>
<span class="line" id="L9"><span class="tok-comment">//! https://sbarral.github.io/etf.</span></span>
<span class="line" id="L10"></span>
<span class="line" id="L11"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L12"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L13"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L14"><span class="tok-kw">const</span> Random = std.rand.Random;</span>
<span class="line" id="L15"></span>
<span class="line" id="L16"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">next_f64</span>(random: Random, <span class="tok-kw">comptime</span> tables: ZigTable) <span class="tok-type">f64</span> {</span>
<span class="line" id="L17"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L18"> <span class="tok-comment">// We manually construct a float from parts as we can avoid an extra random lookup here by</span>
</span>
<span class="line" id="L19"> <span class="tok-comment">// using the unused exponent for the lookup table entry.</span>
</span>
<span class="line" id="L20"> <span class="tok-kw">const</span> bits = random.int(<span class="tok-type">u64</span>);</span>
<span class="line" id="L21"> <span class="tok-kw">const</span> i = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(bits)));</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"> <span class="tok-kw">const</span> u = blk: {</span>
<span class="line" id="L24"> <span class="tok-kw">if</span> (tables.is_symmetric) {</span>
<span class="line" id="L25"> <span class="tok-comment">// Generate a value in the range [2, 4) and scale into [-1, 1)</span>
</span>
<span class="line" id="L26"> <span class="tok-kw">const</span> repr = ((<span class="tok-number">0x3ff</span> + <span class="tok-number">1</span>) << <span class="tok-number">52</span>) | (bits >> <span class="tok-number">12</span>);</span>
<span class="line" id="L27"> <span class="tok-kw">break</span> :blk <span class="tok-builtin">@as</span>(<span class="tok-type">f64</span>, <span class="tok-builtin">@bitCast</span>(repr)) - <span class="tok-number">3.0</span>;</span>
<span class="line" id="L28"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L29"> <span class="tok-comment">// Generate a value in the range [1, 2) and scale into (0, 1)</span>
</span>
<span class="line" id="L30"> <span class="tok-kw">const</span> repr = (<span class="tok-number">0x3ff</span> << <span class="tok-number">52</span>) | (bits >> <span class="tok-number">12</span>);</span>
<span class="line" id="L31"> <span class="tok-kw">break</span> :blk <span class="tok-builtin">@as</span>(<span class="tok-type">f64</span>, <span class="tok-builtin">@bitCast</span>(repr)) - (<span class="tok-number">1.0</span> - math.floatEps(<span class="tok-type">f64</span>) / <span class="tok-number">2.0</span>);</span>
<span class="line" id="L32"> }</span>
<span class="line" id="L33"> };</span>
<span class="line" id="L34"></span>
<span class="line" id="L35"> <span class="tok-kw">const</span> x = u * tables.x[i];</span>
<span class="line" id="L36"> <span class="tok-kw">const</span> test_x = <span class="tok-kw">if</span> (tables.is_symmetric) <span class="tok-builtin">@fabs</span>(x) <span class="tok-kw">else</span> x;</span>
<span class="line" id="L37"></span>
<span class="line" id="L38"> <span class="tok-comment">// equivalent to |u| < tables.x[i+1] / tables.x[i] (or u < tables.x[i+1] / tables.x[i])</span>
</span>
<span class="line" id="L39"> <span class="tok-kw">if</span> (test_x < tables.x[i + <span class="tok-number">1</span>]) {</span>
<span class="line" id="L40"> <span class="tok-kw">return</span> x;</span>
<span class="line" id="L41"> }</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"> <span class="tok-kw">if</span> (i == <span class="tok-number">0</span>) {</span>
<span class="line" id="L44"> <span class="tok-kw">return</span> tables.zero_case(random, u);</span>
<span class="line" id="L45"> }</span>
<span class="line" id="L46"></span>
<span class="line" id="L47"> <span class="tok-comment">// equivalent to f1 + DRanU() * (f0 - f1) < 1</span>
</span>
<span class="line" id="L48"> <span class="tok-kw">if</span> (tables.f[i + <span class="tok-number">1</span>] + (tables.f[i] - tables.f[i + <span class="tok-number">1</span>]) * random.float(<span class="tok-type">f64</span>) < tables.pdf(x)) {</span>
<span class="line" id="L49"> <span class="tok-kw">return</span> x;</span>
<span class="line" id="L50"> }</span>
<span class="line" id="L51"> }</span>
<span class="line" id="L52">}</span>
<span class="line" id="L53"></span>
<span class="line" id="L54"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ZigTable = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L55"> r: <span class="tok-type">f64</span>,</span>
<span class="line" id="L56"> x: [<span class="tok-number">257</span>]<span class="tok-type">f64</span>,</span>
<span class="line" id="L57"> f: [<span class="tok-number">257</span>]<span class="tok-type">f64</span>,</span>
<span class="line" id="L58"></span>
<span class="line" id="L59"> <span class="tok-comment">// probability density function used as a fallback</span>
</span>
<span class="line" id="L60"> pdf: <span class="tok-kw">fn</span> (<span class="tok-type">f64</span>) <span class="tok-type">f64</span>,</span>
<span class="line" id="L61"> <span class="tok-comment">// whether the distribution is symmetric</span>
</span>
<span class="line" id="L62"> is_symmetric: <span class="tok-type">bool</span>,</span>
<span class="line" id="L63"> <span class="tok-comment">// fallback calculation in the case we are in the 0 block</span>
</span>
<span class="line" id="L64"> zero_case: <span class="tok-kw">fn</span> (Random, <span class="tok-type">f64</span>) <span class="tok-type">f64</span>,</span>
<span class="line" id="L65">};</span>
<span class="line" id="L66"></span>
<span class="line" id="L67"><span class="tok-comment">// zigNorInit</span>
</span>
<span class="line" id="L68"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">ZigTableGen</span>(</span>
<span class="line" id="L69"> <span class="tok-kw">comptime</span> is_symmetric: <span class="tok-type">bool</span>,</span>
<span class="line" id="L70"> <span class="tok-kw">comptime</span> r: <span class="tok-type">f64</span>,</span>
<span class="line" id="L71"> <span class="tok-kw">comptime</span> v: <span class="tok-type">f64</span>,</span>
<span class="line" id="L72"> <span class="tok-kw">comptime</span> f: <span class="tok-kw">fn</span> (<span class="tok-type">f64</span>) <span class="tok-type">f64</span>,</span>
<span class="line" id="L73"> <span class="tok-kw">comptime</span> f_inv: <span class="tok-kw">fn</span> (<span class="tok-type">f64</span>) <span class="tok-type">f64</span>,</span>
<span class="line" id="L74"> <span class="tok-kw">comptime</span> zero_case: <span class="tok-kw">fn</span> (Random, <span class="tok-type">f64</span>) <span class="tok-type">f64</span>,</span>
<span class="line" id="L75">) ZigTable {</span>
<span class="line" id="L76"> <span class="tok-kw">var</span> tables: ZigTable = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L77"></span>
<span class="line" id="L78"> tables.is_symmetric = is_symmetric;</span>
<span class="line" id="L79"> tables.r = r;</span>
<span class="line" id="L80"> tables.pdf = f;</span>
<span class="line" id="L81"> tables.zero_case = zero_case;</span>
<span class="line" id="L82"></span>
<span class="line" id="L83"> tables.x[<span class="tok-number">0</span>] = v / f(r);</span>
<span class="line" id="L84"> tables.x[<span class="tok-number">1</span>] = r;</span>
<span class="line" id="L85"></span>
<span class="line" id="L86"> <span class="tok-kw">for</span> (tables.x[<span class="tok-number">2</span>..<span class="tok-number">256</span>], <span class="tok-number">0</span>..) |*entry, i| {</span>
<span class="line" id="L87"> <span class="tok-kw">const</span> last = tables.x[<span class="tok-number">2</span> + i - <span class="tok-number">1</span>];</span>
<span class="line" id="L88"> entry.* = f_inv(v / last + f(last));</span>
<span class="line" id="L89"> }</span>
<span class="line" id="L90"> tables.x[<span class="tok-number">256</span>] = <span class="tok-number">0</span>;</span>
<span class="line" id="L91"></span>
<span class="line" id="L92"> <span class="tok-kw">for</span> (tables.f[<span class="tok-number">0</span>..], <span class="tok-number">0</span>..) |*entry, i| {</span>
<span class="line" id="L93"> entry.* = f(tables.x[i]);</span>
<span class="line" id="L94"> }</span>
<span class="line" id="L95"></span>
<span class="line" id="L96"> <span class="tok-kw">return</span> tables;</span>
<span class="line" id="L97">}</span>
<span class="line" id="L98"></span>
<span class="line" id="L99"><span class="tok-comment">// N(0, 1)</span>
</span>
<span class="line" id="L100"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> NormDist = blk: {</span>
<span class="line" id="L101"> <span class="tok-builtin">@setEvalBranchQuota</span>(<span class="tok-number">30000</span>);</span>
<span class="line" id="L102"> <span class="tok-kw">break</span> :blk ZigTableGen(<span class="tok-null">true</span>, norm_r, norm_v, norm_f, norm_f_inv, norm_zero_case);</span>
<span class="line" id="L103">};</span>
<span class="line" id="L104"></span>
<span class="line" id="L105"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> norm_r = <span class="tok-number">3.6541528853610088</span>;</span>
<span class="line" id="L106"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> norm_v = <span class="tok-number">0.00492867323399</span>;</span>
<span class="line" id="L107"></span>
<span class="line" id="L108"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">norm_f</span>(x: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L109"> <span class="tok-kw">return</span> <span class="tok-builtin">@exp</span>(-x * x / <span class="tok-number">2.0</span>);</span>
<span class="line" id="L110">}</span>
<span class="line" id="L111"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">norm_f_inv</span>(y: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L112"> <span class="tok-kw">return</span> <span class="tok-builtin">@sqrt</span>(-<span class="tok-number">2.0</span> * <span class="tok-builtin">@log</span>(y));</span>
<span class="line" id="L113">}</span>
<span class="line" id="L114"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">norm_zero_case</span>(random: Random, u: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L115"> <span class="tok-kw">var</span> x: <span class="tok-type">f64</span> = <span class="tok-number">1</span>;</span>
<span class="line" id="L116"> <span class="tok-kw">var</span> y: <span class="tok-type">f64</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L117"></span>
<span class="line" id="L118"> <span class="tok-kw">while</span> (-<span class="tok-number">2.0</span> * y < x * x) {</span>
<span class="line" id="L119"> x = <span class="tok-builtin">@log</span>(random.float(<span class="tok-type">f64</span>)) / norm_r;</span>
<span class="line" id="L120"> y = <span class="tok-builtin">@log</span>(random.float(<span class="tok-type">f64</span>));</span>
<span class="line" id="L121"> }</span>
<span class="line" id="L122"></span>
<span class="line" id="L123"> <span class="tok-kw">if</span> (u < <span class="tok-number">0</span>) {</span>
<span class="line" id="L124"> <span class="tok-kw">return</span> x - norm_r;</span>
<span class="line" id="L125"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L126"> <span class="tok-kw">return</span> norm_r - x;</span>
<span class="line" id="L127"> }</span>
<span class="line" id="L128">}</span>
<span class="line" id="L129"></span>
<span class="line" id="L130"><span class="tok-kw">test</span> <span class="tok-str">"normal dist sanity"</span> {</span>
<span class="line" id="L131"> <span class="tok-kw">var</span> prng = std.rand.DefaultPrng.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L132"> <span class="tok-kw">const</span> random = prng.random();</span>
<span class="line" id="L133"></span>
<span class="line" id="L134"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L135"> <span class="tok-kw">while</span> (i < <span class="tok-number">1000</span>) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L136"> _ = random.floatNorm(<span class="tok-type">f64</span>);</span>
<span class="line" id="L137"> }</span>
<span class="line" id="L138">}</span>
<span class="line" id="L139"></span>
<span class="line" id="L140"><span class="tok-comment">// Exp(1)</span>
</span>
<span class="line" id="L141"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ExpDist = blk: {</span>
<span class="line" id="L142"> <span class="tok-builtin">@setEvalBranchQuota</span>(<span class="tok-number">30000</span>);</span>
<span class="line" id="L143"> <span class="tok-kw">break</span> :blk ZigTableGen(<span class="tok-null">false</span>, exp_r, exp_v, exp_f, exp_f_inv, exp_zero_case);</span>
<span class="line" id="L144">};</span>
<span class="line" id="L145"></span>
<span class="line" id="L146"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> exp_r = <span class="tok-number">7.69711747013104972</span>;</span>
<span class="line" id="L147"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> exp_v = <span class="tok-number">0.0039496598225815571993</span>;</span>
<span class="line" id="L148"></span>
<span class="line" id="L149"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">exp_f</span>(x: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L150"> <span class="tok-kw">return</span> <span class="tok-builtin">@exp</span>(-x);</span>
<span class="line" id="L151">}</span>
<span class="line" id="L152"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">exp_f_inv</span>(y: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L153"> <span class="tok-kw">return</span> -<span class="tok-builtin">@log</span>(y);</span>
<span class="line" id="L154">}</span>
<span class="line" id="L155"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">exp_zero_case</span>(random: Random, _: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L156"> <span class="tok-kw">return</span> exp_r - <span class="tok-builtin">@log</span>(random.float(<span class="tok-type">f64</span>));</span>
<span class="line" id="L157">}</span>
<span class="line" id="L158"></span>
<span class="line" id="L159"><span class="tok-kw">test</span> <span class="tok-str">"exp dist smoke test"</span> {</span>
<span class="line" id="L160"> <span class="tok-kw">var</span> prng = std.rand.DefaultPrng.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L161"> <span class="tok-kw">const</span> random = prng.random();</span>
<span class="line" id="L162"></span>
<span class="line" id="L163"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L164"> <span class="tok-kw">while</span> (i < <span class="tok-number">1000</span>) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L165"> _ = random.floatExp(<span class="tok-type">f64</span>);</span>
<span class="line" id="L166"> }</span>
<span class="line" id="L167">}</span>
<span class="line" id="L168"></span>
<span class="line" id="L169"><span class="tok-kw">test</span> {</span>
<span class="line" id="L170"> _ = NormDist;</span>
<span class="line" id="L171">}</span>
<span class="line" id="L172"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/rand/Xoroshiro128.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! Xoroshiro128+ - http://xoroshiro.di.unimi.it/</span></span>
<span class="line" id="L2"><span class="tok-comment">//!</span></span>
<span class="line" id="L3"><span class="tok-comment">//! PRNG</span></span>
<span class="line" id="L4"></span>
<span class="line" id="L5"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L6"><span class="tok-kw">const</span> Random = std.rand.Random;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> Xoroshiro128 = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L9"></span>
<span class="line" id="L10">s: [<span class="tok-number">2</span>]<span class="tok-type">u64</span>,</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(init_s: <span class="tok-type">u64</span>) Xoroshiro128 {</span>
<span class="line" id="L13"> <span class="tok-kw">var</span> x = Xoroshiro128{ .s = <span class="tok-null">undefined</span> };</span>
<span class="line" id="L14"></span>
<span class="line" id="L15"> x.seed(init_s);</span>
<span class="line" id="L16"> <span class="tok-kw">return</span> x;</span>
<span class="line" id="L17">}</span>
<span class="line" id="L18"></span>
<span class="line" id="L19"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">random</span>(self: *Xoroshiro128) Random {</span>
<span class="line" id="L20"> <span class="tok-kw">return</span> Random.init(self, fill);</span>
<span class="line" id="L21">}</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">next</span>(self: *Xoroshiro128) <span class="tok-type">u64</span> {</span>
<span class="line" id="L24"> <span class="tok-kw">const</span> s0 = self.s[<span class="tok-number">0</span>];</span>
<span class="line" id="L25"> <span class="tok-kw">var</span> s1 = self.s[<span class="tok-number">1</span>];</span>
<span class="line" id="L26"> <span class="tok-kw">const</span> r = s0 +% s1;</span>
<span class="line" id="L27"></span>
<span class="line" id="L28"> s1 ^= s0;</span>
<span class="line" id="L29"> self.s[<span class="tok-number">0</span>] = math.rotl(<span class="tok-type">u64</span>, s0, <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-number">55</span>)) ^ s1 ^ (s1 << <span class="tok-number">14</span>);</span>
<span class="line" id="L30"> self.s[<span class="tok-number">1</span>] = math.rotl(<span class="tok-type">u64</span>, s1, <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-number">36</span>));</span>
<span class="line" id="L31"></span>
<span class="line" id="L32"> <span class="tok-kw">return</span> r;</span>
<span class="line" id="L33">}</span>
<span class="line" id="L34"></span>
<span class="line" id="L35"><span class="tok-comment">// Skip 2^64 places ahead in the sequence</span>
</span>
<span class="line" id="L36"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">jump</span>(self: *Xoroshiro128) <span class="tok-type">void</span> {</span>
<span class="line" id="L37"> <span class="tok-kw">var</span> s0: <span class="tok-type">u64</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L38"> <span class="tok-kw">var</span> s1: <span class="tok-type">u64</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L39"></span>
<span class="line" id="L40"> <span class="tok-kw">const</span> table = [_]<span class="tok-type">u64</span>{</span>
<span class="line" id="L41"> <span class="tok-number">0xbeac0467eba5facb</span>,</span>
<span class="line" id="L42"> <span class="tok-number">0xd86b048b86aa9922</span>,</span>
<span class="line" id="L43"> };</span>
<span class="line" id="L44"></span>
<span class="line" id="L45"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (table) |entry| {</span>
<span class="line" id="L46"> <span class="tok-kw">var</span> b: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L47"> <span class="tok-kw">while</span> (b < <span class="tok-number">64</span>) : (b += <span class="tok-number">1</span>) {</span>
<span class="line" id="L48"> <span class="tok-kw">if</span> ((entry & (<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-number">1</span>) << <span class="tok-builtin">@as</span>(<span class="tok-type">u6</span>, <span class="tok-builtin">@intCast</span>(b)))) != <span class="tok-number">0</span>) {</span>
<span class="line" id="L49"> s0 ^= self.s[<span class="tok-number">0</span>];</span>
<span class="line" id="L50"> s1 ^= self.s[<span class="tok-number">1</span>];</span>
<span class="line" id="L51"> }</span>
<span class="line" id="L52"> _ = self.next();</span>
<span class="line" id="L53"> }</span>
<span class="line" id="L54"> }</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"> self.s[<span class="tok-number">0</span>] = s0;</span>
<span class="line" id="L57"> self.s[<span class="tok-number">1</span>] = s1;</span>
<span class="line" id="L58">}</span>
<span class="line" id="L59"></span>
<span class="line" id="L60"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">seed</span>(self: *Xoroshiro128, init_s: <span class="tok-type">u64</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L61"> <span class="tok-comment">// Xoroshiro requires 128-bits of seed.</span>
</span>
<span class="line" id="L62"> <span class="tok-kw">var</span> gen = std.rand.SplitMix64.init(init_s);</span>
<span class="line" id="L63"></span>
<span class="line" id="L64"> self.s[<span class="tok-number">0</span>] = gen.next();</span>
<span class="line" id="L65"> self.s[<span class="tok-number">1</span>] = gen.next();</span>
<span class="line" id="L66">}</span>
<span class="line" id="L67"></span>
<span class="line" id="L68"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fill</span>(self: *Xoroshiro128, buf: []<span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L69"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L70"> <span class="tok-kw">const</span> aligned_len = buf.len - (buf.len & <span class="tok-number">7</span>);</span>
<span class="line" id="L71"></span>
<span class="line" id="L72"> <span class="tok-comment">// Complete 8 byte segments.</span>
</span>
<span class="line" id="L73"> <span class="tok-kw">while</span> (i < aligned_len) : (i += <span class="tok-number">8</span>) {</span>
<span class="line" id="L74"> <span class="tok-kw">var</span> n = self.next();</span>
<span class="line" id="L75"> <span class="tok-kw">comptime</span> <span class="tok-kw">var</span> j: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L76"> <span class="tok-kw">inline</span> <span class="tok-kw">while</span> (j < <span class="tok-number">8</span>) : (j += <span class="tok-number">1</span>) {</span>
<span class="line" id="L77"> buf[i + j] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(n));</span>
<span class="line" id="L78"> n >>= <span class="tok-number">8</span>;</span>
<span class="line" id="L79"> }</span>
<span class="line" id="L80"> }</span>
<span class="line" id="L81"></span>
<span class="line" id="L82"> <span class="tok-comment">// Remaining. (cuts the stream)</span>
</span>
<span class="line" id="L83"> <span class="tok-kw">if</span> (i != buf.len) {</span>
<span class="line" id="L84"> <span class="tok-kw">var</span> n = self.next();</span>
<span class="line" id="L85"> <span class="tok-kw">while</span> (i < buf.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L86"> buf[i] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(n));</span>
<span class="line" id="L87"> n >>= <span class="tok-number">8</span>;</span>
<span class="line" id="L88"> }</span>
<span class="line" id="L89"> }</span>
<span class="line" id="L90">}</span>
<span class="line" id="L91"></span>
<span class="line" id="L92"><span class="tok-kw">test</span> <span class="tok-str">"xoroshiro sequence"</span> {</span>
<span class="line" id="L93"> <span class="tok-kw">var</span> r = Xoroshiro128.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L94"> r.s[<span class="tok-number">0</span>] = <span class="tok-number">0xaeecf86f7878dd75</span>;</span>
<span class="line" id="L95"> r.s[<span class="tok-number">1</span>] = <span class="tok-number">0x01cd153642e72622</span>;</span>
<span class="line" id="L96"></span>
<span class="line" id="L97"> <span class="tok-kw">const</span> seq1 = [_]<span class="tok-type">u64</span>{</span>
<span class="line" id="L98"> <span class="tok-number">0xb0ba0da5bb600397</span>,</span>
<span class="line" id="L99"> <span class="tok-number">0x18a08afde614dccc</span>,</span>
<span class="line" id="L100"> <span class="tok-number">0xa2635b956a31b929</span>,</span>
<span class="line" id="L101"> <span class="tok-number">0xabe633c971efa045</span>,</span>
<span class="line" id="L102"> <span class="tok-number">0x9ac19f9706ca3cac</span>,</span>
<span class="line" id="L103"> <span class="tok-number">0xf62b426578c1e3fb</span>,</span>
<span class="line" id="L104"> };</span>
<span class="line" id="L105"></span>
<span class="line" id="L106"> <span class="tok-kw">for</span> (seq1) |s| {</span>
<span class="line" id="L107"> <span class="tok-kw">try</span> std.testing.expect(s == r.next());</span>
<span class="line" id="L108"> }</span>
<span class="line" id="L109"></span>
<span class="line" id="L110"> r.jump();</span>
<span class="line" id="L111"></span>
<span class="line" id="L112"> <span class="tok-kw">const</span> seq2 = [_]<span class="tok-type">u64</span>{</span>
<span class="line" id="L113"> <span class="tok-number">0x95344a13556d3e22</span>,</span>
<span class="line" id="L114"> <span class="tok-number">0xb4fb32dafa4d00df</span>,</span>
<span class="line" id="L115"> <span class="tok-number">0xb2011d9ccdcfe2dd</span>,</span>
<span class="line" id="L116"> <span class="tok-number">0x05679a9b2119b908</span>,</span>
<span class="line" id="L117"> <span class="tok-number">0xa860a1da7c9cd8a0</span>,</span>
<span class="line" id="L118"> <span class="tok-number">0x658a96efe3f86550</span>,</span>
<span class="line" id="L119"> };</span>
<span class="line" id="L120"></span>
<span class="line" id="L121"> <span class="tok-kw">for</span> (seq2) |s| {</span>
<span class="line" id="L122"> <span class="tok-kw">try</span> std.testing.expect(s == r.next());</span>
<span class="line" id="L123"> }</span>
<span class="line" id="L124">}</span>
<span class="line" id="L125"></span>
<span class="line" id="L126"><span class="tok-kw">test</span> <span class="tok-str">"xoroshiro fill"</span> {</span>
<span class="line" id="L127"> <span class="tok-kw">var</span> r = Xoroshiro128.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L128"> r.s[<span class="tok-number">0</span>] = <span class="tok-number">0xaeecf86f7878dd75</span>;</span>
<span class="line" id="L129"> r.s[<span class="tok-number">1</span>] = <span class="tok-number">0x01cd153642e72622</span>;</span>
<span class="line" id="L130"></span>
<span class="line" id="L131"> <span class="tok-kw">const</span> seq = [_]<span class="tok-type">u64</span>{</span>
<span class="line" id="L132"> <span class="tok-number">0xb0ba0da5bb600397</span>,</span>
<span class="line" id="L133"> <span class="tok-number">0x18a08afde614dccc</span>,</span>
<span class="line" id="L134"> <span class="tok-number">0xa2635b956a31b929</span>,</span>
<span class="line" id="L135"> <span class="tok-number">0xabe633c971efa045</span>,</span>
<span class="line" id="L136"> <span class="tok-number">0x9ac19f9706ca3cac</span>,</span>
<span class="line" id="L137"> <span class="tok-number">0xf62b426578c1e3fb</span>,</span>
<span class="line" id="L138"> };</span>
<span class="line" id="L139"></span>
<span class="line" id="L140"> <span class="tok-kw">for</span> (seq) |s| {</span>
<span class="line" id="L141"> <span class="tok-kw">var</span> buf0: [<span class="tok-number">8</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L142"> <span class="tok-kw">var</span> buf1: [<span class="tok-number">7</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L143"> std.mem.writeIntLittle(<span class="tok-type">u64</span>, &buf0, s);</span>
<span class="line" id="L144"> r.fill(&buf1);</span>
<span class="line" id="L145"> <span class="tok-kw">try</span> std.testing.expect(std.mem.eql(<span class="tok-type">u8</span>, buf0[<span class="tok-number">0</span>..<span class="tok-number">7</span>], buf1[<span class="tok-number">0</span>..]));</span>
<span class="line" id="L146"> }</span>
<span class="line" id="L147">}</span>
<span class="line" id="L148"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! CSPRNG based on the Reverie construction, a permutation-based PRNG</span></span>
<span class="line" id="L2"><span class="tok-comment">//! with forward security, instantiated with the Ascon(128,12,8) permutation.</span></span>
<span class="line" id="L3"><span class="tok-comment">//!</span></span>
<span class="line" id="L4"><span class="tok-comment">//! Compared to ChaCha, this PRNG has a much smaller state, and can be</span></span>
<span class="line" id="L5"><span class="tok-comment">//! a better choice for constrained environments.</span></span>
<span class="line" id="L6"><span class="tok-comment">//!</span></span>
<span class="line" id="L7"><span class="tok-comment">//! References:</span></span>
<span class="line" id="L8"><span class="tok-comment">//! - A Robust and Sponge-Like PRNG with Improved Efficiency https://eprint.iacr.org/2016/886.pdf</span></span>
<span class="line" id="L9"><span class="tok-comment">//! - Ascon https://ascon.iaik.tugraz.at/files/asconv12-nist.pdf</span></span>
<span class="line" id="L10"></span>
<span class="line" id="L11"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L12"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L13"><span class="tok-kw">const</span> Random = std.rand.Random;</span>
<span class="line" id="L14"><span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L15"></span>
<span class="line" id="L16"><span class="tok-kw">const</span> Ascon = std.crypto.core.Ascon(.Little);</span>
<span class="line" id="L17"></span>
<span class="line" id="L18">state: Ascon,</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"><span class="tok-kw">const</span> rate = <span class="tok-number">16</span>;</span>
<span class="line" id="L21"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> secret_seed_length = <span class="tok-number">32</span>;</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"><span class="tok-comment">/// The seed must be uniform, secret and `secret_seed_length` bytes long.</span></span>
<span class="line" id="L24"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(secret_seed: [secret_seed_length]<span class="tok-type">u8</span>) Self {</span>
<span class="line" id="L25"> <span class="tok-kw">var</span> self = Self{ .state = Ascon.initXof() };</span>
<span class="line" id="L26"> self.addEntropy(&secret_seed);</span>
<span class="line" id="L27"> <span class="tok-kw">return</span> self;</span>
<span class="line" id="L28">}</span>
<span class="line" id="L29"></span>
<span class="line" id="L30"><span class="tok-comment">/// Inserts entropy to refresh the internal state.</span></span>
<span class="line" id="L31"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addEntropy</span>(self: *Self, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L32"> <span class="tok-kw">comptime</span> std.debug.assert(secret_seed_length % rate == <span class="tok-number">0</span>);</span>
<span class="line" id="L33"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L34"> <span class="tok-kw">while</span> (i + rate < bytes.len) : (i += rate) {</span>
<span class="line" id="L35"> self.state.addBytes(bytes[i..][<span class="tok-number">0</span>..rate]);</span>
<span class="line" id="L36"> self.state.permuteR(<span class="tok-number">8</span>);</span>
<span class="line" id="L37"> }</span>
<span class="line" id="L38"> <span class="tok-kw">if</span> (i != bytes.len) self.state.addBytes(bytes[i..]);</span>
<span class="line" id="L39"> self.state.permute();</span>
<span class="line" id="L40">}</span>
<span class="line" id="L41"></span>
<span class="line" id="L42"><span class="tok-comment">/// Returns a `std.rand.Random` structure backed by the current RNG.</span></span>
<span class="line" id="L43"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">random</span>(self: *Self) Random {</span>
<span class="line" id="L44"> <span class="tok-kw">return</span> Random.init(self, fill);</span>
<span class="line" id="L45">}</span>
<span class="line" id="L46"></span>
<span class="line" id="L47"><span class="tok-comment">/// Fills the buffer with random bytes.</span></span>
<span class="line" id="L48"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fill</span>(self: *Self, buf: []<span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L49"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L50"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L51"> <span class="tok-kw">const</span> left = buf.len - i;</span>
<span class="line" id="L52"> <span class="tok-kw">const</span> n = <span class="tok-builtin">@min</span>(left, rate);</span>
<span class="line" id="L53"> self.state.extractBytes(buf[i..][<span class="tok-number">0</span>..n]);</span>
<span class="line" id="L54"> <span class="tok-kw">if</span> (left == <span class="tok-number">0</span>) <span class="tok-kw">break</span>;</span>
<span class="line" id="L55"> self.state.permuteR(<span class="tok-number">8</span>);</span>
<span class="line" id="L56"> i += n;</span>
<span class="line" id="L57"> }</span>
<span class="line" id="L58"> self.state.permuteRatchet(<span class="tok-number">6</span>, rate);</span>
<span class="line" id="L59">}</span>
<span class="line" id="L60"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/rand/ChaCha.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! CSPRNG based on the ChaCha8 stream cipher, with forward security.</span></span>
<span class="line" id="L2"><span class="tok-comment">//!</span></span>
<span class="line" id="L3"><span class="tok-comment">//! References:</span></span>
<span class="line" id="L4"><span class="tok-comment">//! - Fast-key-erasure random-number generators https://blog.cr.yp.to/20170723-random.html</span></span>
<span class="line" id="L5"></span>
<span class="line" id="L6"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L7"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> Random = std.rand.Random;</span>
<span class="line" id="L9"><span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L10"></span>
<span class="line" id="L11"><span class="tok-kw">const</span> Cipher = std.crypto.stream.chacha.ChaCha8IETF;</span>
<span class="line" id="L12"></span>
<span class="line" id="L13"><span class="tok-kw">const</span> State = [<span class="tok-number">8</span> * Cipher.block_length]<span class="tok-type">u8</span>;</span>
<span class="line" id="L14"></span>
<span class="line" id="L15">state: State,</span>
<span class="line" id="L16">offset: <span class="tok-type">usize</span>,</span>
<span class="line" id="L17"></span>
<span class="line" id="L18"><span class="tok-kw">const</span> nonce = [_]<span class="tok-type">u8</span>{<span class="tok-number">0</span>} ** Cipher.nonce_length;</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> secret_seed_length = Cipher.key_length;</span>
<span class="line" id="L21"></span>
<span class="line" id="L22"><span class="tok-comment">/// The seed must be uniform, secret and `secret_seed_length` bytes long.</span></span>
<span class="line" id="L23"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(secret_seed: [secret_seed_length]<span class="tok-type">u8</span>) Self {</span>
<span class="line" id="L24"> <span class="tok-kw">var</span> self = Self{ .state = <span class="tok-null">undefined</span>, .offset = <span class="tok-number">0</span> };</span>
<span class="line" id="L25"> Cipher.stream(&self.state, <span class="tok-number">0</span>, secret_seed, nonce);</span>
<span class="line" id="L26"> <span class="tok-kw">return</span> self;</span>
<span class="line" id="L27">}</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"><span class="tok-comment">/// Inserts entropy to refresh the internal state.</span></span>
<span class="line" id="L30"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addEntropy</span>(self: *Self, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L31"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L32"> <span class="tok-kw">while</span> (i + Cipher.key_length <= bytes.len) : (i += Cipher.key_length) {</span>
<span class="line" id="L33"> Cipher.xor(</span>
<span class="line" id="L34"> self.state[<span class="tok-number">0</span>..Cipher.key_length],</span>
<span class="line" id="L35"> self.state[<span class="tok-number">0</span>..Cipher.key_length],</span>
<span class="line" id="L36"> <span class="tok-number">0</span>,</span>
<span class="line" id="L37"> bytes[i..][<span class="tok-number">0</span>..Cipher.key_length].*,</span>
<span class="line" id="L38"> nonce,</span>
<span class="line" id="L39"> );</span>
<span class="line" id="L40"> }</span>
<span class="line" id="L41"> <span class="tok-kw">if</span> (i < bytes.len) {</span>
<span class="line" id="L42"> <span class="tok-kw">var</span> k = [_]<span class="tok-type">u8</span>{<span class="tok-number">0</span>} ** Cipher.key_length;</span>
<span class="line" id="L43"> <span class="tok-kw">const</span> src = bytes[i..];</span>
<span class="line" id="L44"> <span class="tok-builtin">@memcpy</span>(k[<span class="tok-number">0</span>..src.len], src);</span>
<span class="line" id="L45"> Cipher.xor(</span>
<span class="line" id="L46"> self.state[<span class="tok-number">0</span>..Cipher.key_length],</span>
<span class="line" id="L47"> self.state[<span class="tok-number">0</span>..Cipher.key_length],</span>
<span class="line" id="L48"> <span class="tok-number">0</span>,</span>
<span class="line" id="L49"> k,</span>
<span class="line" id="L50"> nonce,</span>
<span class="line" id="L51"> );</span>
<span class="line" id="L52"> }</span>
<span class="line" id="L53"> self.refill();</span>
<span class="line" id="L54">}</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"><span class="tok-comment">/// Returns a `std.rand.Random` structure backed by the current RNG.</span></span>
<span class="line" id="L57"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">random</span>(self: *Self) Random {</span>
<span class="line" id="L58"> <span class="tok-kw">return</span> Random.init(self, fill);</span>
<span class="line" id="L59">}</span>
<span class="line" id="L60"></span>
<span class="line" id="L61"><span class="tok-comment">// Refills the buffer with random bytes, overwriting the previous key.</span>
</span>
<span class="line" id="L62"><span class="tok-kw">fn</span> <span class="tok-fn">refill</span>(self: *Self) <span class="tok-type">void</span> {</span>
<span class="line" id="L63"> Cipher.stream(&self.state, <span class="tok-number">0</span>, self.state[<span class="tok-number">0</span>..Cipher.key_length].*, nonce);</span>
<span class="line" id="L64"> self.offset = <span class="tok-number">0</span>;</span>
<span class="line" id="L65">}</span>
<span class="line" id="L66"></span>
<span class="line" id="L67"><span class="tok-comment">/// Fills the buffer with random bytes.</span></span>
<span class="line" id="L68"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fill</span>(self: *Self, buf_: []<span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L69"> <span class="tok-kw">const</span> bytes = self.state[Cipher.key_length..];</span>
<span class="line" id="L70"> <span class="tok-kw">var</span> buf = buf_;</span>
<span class="line" id="L71"></span>
<span class="line" id="L72"> <span class="tok-kw">const</span> avail = bytes.len - self.offset;</span>
<span class="line" id="L73"> <span class="tok-kw">if</span> (avail > <span class="tok-number">0</span>) {</span>
<span class="line" id="L74"> <span class="tok-comment">// Bytes from the current block</span>
</span>
<span class="line" id="L75"> <span class="tok-kw">const</span> n = <span class="tok-builtin">@min</span>(avail, buf.len);</span>
<span class="line" id="L76"> <span class="tok-builtin">@memcpy</span>(buf[<span class="tok-number">0</span>..n], bytes[self.offset..][<span class="tok-number">0</span>..n]);</span>
<span class="line" id="L77"> <span class="tok-builtin">@memset</span>(bytes[self.offset..][<span class="tok-number">0</span>..n], <span class="tok-number">0</span>);</span>
<span class="line" id="L78"> buf = buf[n..];</span>
<span class="line" id="L79"> self.offset += n;</span>
<span class="line" id="L80"> }</span>
<span class="line" id="L81"> <span class="tok-kw">if</span> (buf.len == <span class="tok-number">0</span>) <span class="tok-kw">return</span>;</span>
<span class="line" id="L82"></span>
<span class="line" id="L83"> self.refill();</span>
<span class="line" id="L84"></span>
<span class="line" id="L85"> <span class="tok-comment">// Full blocks</span>
</span>
<span class="line" id="L86"> <span class="tok-kw">while</span> (buf.len >= bytes.len) {</span>
<span class="line" id="L87"> <span class="tok-builtin">@memcpy</span>(buf[<span class="tok-number">0</span>..bytes.len], bytes);</span>
<span class="line" id="L88"> buf = buf[bytes.len..];</span>
<span class="line" id="L89"> self.refill();</span>
<span class="line" id="L90"> }</span>
<span class="line" id="L91"></span>
<span class="line" id="L92"> <span class="tok-comment">// Remaining bytes</span>
</span>
<span class="line" id="L93"> <span class="tok-kw">if</span> (buf.len > <span class="tok-number">0</span>) {</span>
<span class="line" id="L94"> <span class="tok-builtin">@memcpy</span>(buf, bytes[<span class="tok-number">0</span>..buf.len]);</span>
<span class="line" id="L95"> <span class="tok-builtin">@memset</span>(bytes[<span class="tok-number">0</span>..buf.len], <span class="tok-number">0</span>);</span>
<span class="line" id="L96"> self.offset = buf.len;</span>
<span class="line" id="L97"> }</span>
<span class="line" id="L98">}</span>
<span class="line" id="L99"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/rand/Xoshiro256.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! Xoshiro256++ - http://xoroshiro.di.unimi.it/</span></span>
<span class="line" id="L2"><span class="tok-comment">//!</span></span>
<span class="line" id="L3"><span class="tok-comment">//! PRNG</span></span>
<span class="line" id="L4"></span>
<span class="line" id="L5"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L6"><span class="tok-kw">const</span> Random = std.rand.Random;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> Xoshiro256 = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L9"></span>
<span class="line" id="L10">s: [<span class="tok-number">4</span>]<span class="tok-type">u64</span>,</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(init_s: <span class="tok-type">u64</span>) Xoshiro256 {</span>
<span class="line" id="L13"> <span class="tok-kw">var</span> x = Xoshiro256{</span>
<span class="line" id="L14"> .s = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L15"> };</span>
<span class="line" id="L16"></span>
<span class="line" id="L17"> x.seed(init_s);</span>
<span class="line" id="L18"> <span class="tok-kw">return</span> x;</span>
<span class="line" id="L19">}</span>
<span class="line" id="L20"></span>
<span class="line" id="L21"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">random</span>(self: *Xoshiro256) Random {</span>
<span class="line" id="L22"> <span class="tok-kw">return</span> Random.init(self, fill);</span>
<span class="line" id="L23">}</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">next</span>(self: *Xoshiro256) <span class="tok-type">u64</span> {</span>
<span class="line" id="L26"> <span class="tok-kw">const</span> r = math.rotl(<span class="tok-type">u64</span>, self.s[<span class="tok-number">0</span>] +% self.s[<span class="tok-number">3</span>], <span class="tok-number">23</span>) +% self.s[<span class="tok-number">0</span>];</span>
<span class="line" id="L27"></span>
<span class="line" id="L28"> <span class="tok-kw">const</span> t = self.s[<span class="tok-number">1</span>] << <span class="tok-number">17</span>;</span>
<span class="line" id="L29"></span>
<span class="line" id="L30"> self.s[<span class="tok-number">2</span>] ^= self.s[<span class="tok-number">0</span>];</span>
<span class="line" id="L31"> self.s[<span class="tok-number">3</span>] ^= self.s[<span class="tok-number">1</span>];</span>
<span class="line" id="L32"> self.s[<span class="tok-number">1</span>] ^= self.s[<span class="tok-number">2</span>];</span>
<span class="line" id="L33"> self.s[<span class="tok-number">0</span>] ^= self.s[<span class="tok-number">3</span>];</span>
<span class="line" id="L34"></span>
<span class="line" id="L35"> self.s[<span class="tok-number">2</span>] ^= t;</span>
<span class="line" id="L36"></span>
<span class="line" id="L37"> self.s[<span class="tok-number">3</span>] = math.rotl(<span class="tok-type">u64</span>, self.s[<span class="tok-number">3</span>], <span class="tok-number">45</span>);</span>
<span class="line" id="L38"></span>
<span class="line" id="L39"> <span class="tok-kw">return</span> r;</span>
<span class="line" id="L40">}</span>
<span class="line" id="L41"></span>
<span class="line" id="L42"><span class="tok-comment">// Skip 2^128 places ahead in the sequence</span>
</span>
<span class="line" id="L43"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">jump</span>(self: *Xoshiro256) <span class="tok-type">void</span> {</span>
<span class="line" id="L44"> <span class="tok-kw">var</span> s: <span class="tok-type">u256</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L45"></span>
<span class="line" id="L46"> <span class="tok-kw">var</span> table: <span class="tok-type">u256</span> = <span class="tok-number">0x39abdc4529b1661ca9582618e03fc9aad5a61266f0c9392c180ec6d33cfd0aba</span>;</span>
<span class="line" id="L47"></span>
<span class="line" id="L48"> <span class="tok-kw">while</span> (table != <span class="tok-number">0</span>) : (table >>= <span class="tok-number">1</span>) {</span>
<span class="line" id="L49"> <span class="tok-kw">if</span> (<span class="tok-builtin">@as</span>(<span class="tok-type">u1</span>, <span class="tok-builtin">@truncate</span>(table)) != <span class="tok-number">0</span>) {</span>
<span class="line" id="L50"> s ^= <span class="tok-builtin">@as</span>(<span class="tok-type">u256</span>, <span class="tok-builtin">@bitCast</span>(self.s));</span>
<span class="line" id="L51"> }</span>
<span class="line" id="L52"> _ = self.next();</span>
<span class="line" id="L53"> }</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"> self.s = <span class="tok-builtin">@as</span>([<span class="tok-number">4</span>]<span class="tok-type">u64</span>, <span class="tok-builtin">@bitCast</span>(s));</span>
<span class="line" id="L56">}</span>
<span class="line" id="L57"></span>
<span class="line" id="L58"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">seed</span>(self: *Xoshiro256, init_s: <span class="tok-type">u64</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L59"> <span class="tok-comment">// Xoshiro requires 256-bits of seed.</span>
</span>
<span class="line" id="L60"> <span class="tok-kw">var</span> gen = std.rand.SplitMix64.init(init_s);</span>
<span class="line" id="L61"></span>
<span class="line" id="L62"> self.s[<span class="tok-number">0</span>] = gen.next();</span>
<span class="line" id="L63"> self.s[<span class="tok-number">1</span>] = gen.next();</span>
<span class="line" id="L64"> self.s[<span class="tok-number">2</span>] = gen.next();</span>
<span class="line" id="L65"> self.s[<span class="tok-number">3</span>] = gen.next();</span>
<span class="line" id="L66">}</span>
<span class="line" id="L67"></span>
<span class="line" id="L68"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fill</span>(self: *Xoshiro256, buf: []<span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L69"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L70"> <span class="tok-kw">const</span> aligned_len = buf.len - (buf.len & <span class="tok-number">7</span>);</span>
<span class="line" id="L71"></span>
<span class="line" id="L72"> <span class="tok-comment">// Complete 8 byte segments.</span>
</span>
<span class="line" id="L73"> <span class="tok-kw">while</span> (i < aligned_len) : (i += <span class="tok-number">8</span>) {</span>
<span class="line" id="L74"> <span class="tok-kw">var</span> n = self.next();</span>
<span class="line" id="L75"> <span class="tok-kw">comptime</span> <span class="tok-kw">var</span> j: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L76"> <span class="tok-kw">inline</span> <span class="tok-kw">while</span> (j < <span class="tok-number">8</span>) : (j += <span class="tok-number">1</span>) {</span>
<span class="line" id="L77"> buf[i + j] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(n));</span>
<span class="line" id="L78"> n >>= <span class="tok-number">8</span>;</span>
<span class="line" id="L79"> }</span>
<span class="line" id="L80"> }</span>
<span class="line" id="L81"></span>
<span class="line" id="L82"> <span class="tok-comment">// Remaining. (cuts the stream)</span>
</span>
<span class="line" id="L83"> <span class="tok-kw">if</span> (i != buf.len) {</span>
<span class="line" id="L84"> <span class="tok-kw">var</span> n = self.next();</span>
<span class="line" id="L85"> <span class="tok-kw">while</span> (i < buf.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L86"> buf[i] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(n));</span>
<span class="line" id="L87"> n >>= <span class="tok-number">8</span>;</span>
<span class="line" id="L88"> }</span>
<span class="line" id="L89"> }</span>
<span class="line" id="L90">}</span>
<span class="line" id="L91"></span>
<span class="line" id="L92"><span class="tok-kw">test</span> <span class="tok-str">"xoroshiro sequence"</span> {</span>
<span class="line" id="L93"> <span class="tok-kw">if</span> (<span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>).zig_backend == .stage2_c) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L94"></span>
<span class="line" id="L95"> <span class="tok-kw">var</span> r = Xoshiro256.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L96"></span>
<span class="line" id="L97"> <span class="tok-kw">const</span> seq1 = [_]<span class="tok-type">u64</span>{</span>
<span class="line" id="L98"> <span class="tok-number">0x53175d61490b23df</span>,</span>
<span class="line" id="L99"> <span class="tok-number">0x61da6f3dc380d507</span>,</span>
<span class="line" id="L100"> <span class="tok-number">0x5c0fdf91ec9a7bfc</span>,</span>
<span class="line" id="L101"> <span class="tok-number">0x02eebf8c3bbe5e1a</span>,</span>
<span class="line" id="L102"> <span class="tok-number">0x7eca04ebaf4a5eea</span>,</span>
<span class="line" id="L103"> <span class="tok-number">0x0543c37757f08d9a</span>,</span>
<span class="line" id="L104"> };</span>
<span class="line" id="L105"></span>
<span class="line" id="L106"> <span class="tok-kw">for</span> (seq1) |s| {</span>
<span class="line" id="L107"> <span class="tok-kw">try</span> std.testing.expect(s == r.next());</span>
<span class="line" id="L108"> }</span>
<span class="line" id="L109"></span>
<span class="line" id="L110"> r.jump();</span>
<span class="line" id="L111"></span>
<span class="line" id="L112"> <span class="tok-kw">const</span> seq2 = [_]<span class="tok-type">u64</span>{</span>
<span class="line" id="L113"> <span class="tok-number">0xae1db5c5e27807be</span>,</span>
<span class="line" id="L114"> <span class="tok-number">0xb584c6a7fd8709fe</span>,</span>
<span class="line" id="L115"> <span class="tok-number">0xc46a0ee9330fb6e</span>,</span>
<span class="line" id="L116"> <span class="tok-number">0xdc0c9606f49ed76e</span>,</span>
<span class="line" id="L117"> <span class="tok-number">0x1f5bb6540f6651fb</span>,</span>
<span class="line" id="L118"> <span class="tok-number">0x72fa2ca734601488</span>,</span>
<span class="line" id="L119"> };</span>
<span class="line" id="L120"></span>
<span class="line" id="L121"> <span class="tok-kw">for</span> (seq2) |s| {</span>
<span class="line" id="L122"> <span class="tok-kw">try</span> std.testing.expect(s == r.next());</span>
<span class="line" id="L123"> }</span>
<span class="line" id="L124">}</span>
<span class="line" id="L125"></span>
<span class="line" id="L126"><span class="tok-kw">test</span> <span class="tok-str">"xoroshiro fill"</span> {</span>
<span class="line" id="L127"> <span class="tok-kw">var</span> r = Xoshiro256.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L128"></span>
<span class="line" id="L129"> <span class="tok-kw">const</span> seq = [_]<span class="tok-type">u64</span>{</span>
<span class="line" id="L130"> <span class="tok-number">0x53175d61490b23df</span>,</span>
<span class="line" id="L131"> <span class="tok-number">0x61da6f3dc380d507</span>,</span>
<span class="line" id="L132"> <span class="tok-number">0x5c0fdf91ec9a7bfc</span>,</span>
<span class="line" id="L133"> <span class="tok-number">0x02eebf8c3bbe5e1a</span>,</span>
<span class="line" id="L134"> <span class="tok-number">0x7eca04ebaf4a5eea</span>,</span>
<span class="line" id="L135"> <span class="tok-number">0x0543c37757f08d9a</span>,</span>
<span class="line" id="L136"> };</span>
<span class="line" id="L137"></span>
<span class="line" id="L138"> <span class="tok-kw">for</span> (seq) |s| {</span>
<span class="line" id="L139"> <span class="tok-kw">var</span> buf0: [<span class="tok-number">8</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L140"> <span class="tok-kw">var</span> buf1: [<span class="tok-number">7</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L141"> std.mem.writeIntLittle(<span class="tok-type">u64</span>, &buf0, s);</span>
<span class="line" id="L142"> r.fill(&buf1);</span>
<span class="line" id="L143"> <span class="tok-kw">try</span> std.testing.expect(std.mem.eql(<span class="tok-type">u8</span>, buf0[<span class="tok-number">0</span>..<span class="tok-number">7</span>], buf1[<span class="tok-number">0</span>..]));</span>
<span class="line" id="L144"> }</span>
<span class="line" id="L145">}</span>
<span class="line" id="L146"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">// Website: romu-random.org</span>
</span>
<span class="line" id="L2"><span class="tok-comment">// Reference paper: http://arxiv.org/abs/2002.11331</span>
</span>
<span class="line" id="L3"><span class="tok-comment">// Beware: this PRNG is trivially predictable. While fast, it should *never* be used for cryptographic purposes.</span>
</span>
<span class="line" id="L4"></span>
<span class="line" id="L5"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L6"><span class="tok-kw">const</span> Random = std.rand.Random;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> RomuTrio = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L9"></span>
<span class="line" id="L10">x_state: <span class="tok-type">u64</span>,</span>
<span class="line" id="L11">y_state: <span class="tok-type">u64</span>,</span>
<span class="line" id="L12">z_state: <span class="tok-type">u64</span>, <span class="tok-comment">// set to nonzero seed</span>
</span>
<span class="line" id="L13"></span>
<span class="line" id="L14"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(init_s: <span class="tok-type">u64</span>) RomuTrio {</span>
<span class="line" id="L15"> <span class="tok-kw">var</span> x = RomuTrio{ .x_state = <span class="tok-null">undefined</span>, .y_state = <span class="tok-null">undefined</span>, .z_state = <span class="tok-null">undefined</span> };</span>
<span class="line" id="L16"> x.seed(init_s);</span>
<span class="line" id="L17"> <span class="tok-kw">return</span> x;</span>
<span class="line" id="L18">}</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">random</span>(self: *RomuTrio) Random {</span>
<span class="line" id="L21"> <span class="tok-kw">return</span> Random.init(self, fill);</span>
<span class="line" id="L22">}</span>
<span class="line" id="L23"></span>
<span class="line" id="L24"><span class="tok-kw">fn</span> <span class="tok-fn">next</span>(self: *RomuTrio) <span class="tok-type">u64</span> {</span>
<span class="line" id="L25"> <span class="tok-kw">const</span> xp = self.x_state;</span>
<span class="line" id="L26"> <span class="tok-kw">const</span> yp = self.y_state;</span>
<span class="line" id="L27"> <span class="tok-kw">const</span> zp = self.z_state;</span>
<span class="line" id="L28"> self.x_state = <span class="tok-number">15241094284759029579</span> *% zp;</span>
<span class="line" id="L29"> self.y_state = yp -% xp;</span>
<span class="line" id="L30"> self.y_state = std.math.rotl(<span class="tok-type">u64</span>, self.y_state, <span class="tok-number">12</span>);</span>
<span class="line" id="L31"> self.z_state = zp -% yp;</span>
<span class="line" id="L32"> self.z_state = std.math.rotl(<span class="tok-type">u64</span>, self.z_state, <span class="tok-number">44</span>);</span>
<span class="line" id="L33"> <span class="tok-kw">return</span> xp;</span>
<span class="line" id="L34">}</span>
<span class="line" id="L35"></span>
<span class="line" id="L36"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">seedWithBuf</span>(self: *RomuTrio, buf: [<span class="tok-number">24</span>]<span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L37"> <span class="tok-kw">const</span> seed_buf = <span class="tok-builtin">@as</span>([<span class="tok-number">3</span>]<span class="tok-type">u64</span>, <span class="tok-builtin">@bitCast</span>(buf));</span>
<span class="line" id="L38"> self.x_state = seed_buf[<span class="tok-number">0</span>];</span>
<span class="line" id="L39"> self.y_state = seed_buf[<span class="tok-number">1</span>];</span>
<span class="line" id="L40"> self.z_state = seed_buf[<span class="tok-number">2</span>];</span>
<span class="line" id="L41">}</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">seed</span>(self: *RomuTrio, init_s: <span class="tok-type">u64</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L44"> <span class="tok-comment">// RomuTrio requires 192-bits of seed.</span>
</span>
<span class="line" id="L45"> <span class="tok-kw">var</span> gen = std.rand.SplitMix64.init(init_s);</span>
<span class="line" id="L46"></span>
<span class="line" id="L47"> self.x_state = gen.next();</span>
<span class="line" id="L48"> self.y_state = gen.next();</span>
<span class="line" id="L49"> self.z_state = gen.next();</span>
<span class="line" id="L50">}</span>
<span class="line" id="L51"></span>
<span class="line" id="L52"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fill</span>(self: *RomuTrio, buf: []<span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L53"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L54"> <span class="tok-kw">const</span> aligned_len = buf.len - (buf.len & <span class="tok-number">7</span>);</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"> <span class="tok-comment">// Complete 8 byte segments.</span>
</span>
<span class="line" id="L57"> <span class="tok-kw">while</span> (i < aligned_len) : (i += <span class="tok-number">8</span>) {</span>
<span class="line" id="L58"> <span class="tok-kw">var</span> n = self.next();</span>
<span class="line" id="L59"> <span class="tok-kw">comptime</span> <span class="tok-kw">var</span> j: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L60"> <span class="tok-kw">inline</span> <span class="tok-kw">while</span> (j < <span class="tok-number">8</span>) : (j += <span class="tok-number">1</span>) {</span>
<span class="line" id="L61"> buf[i + j] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(n));</span>
<span class="line" id="L62"> n >>= <span class="tok-number">8</span>;</span>
<span class="line" id="L63"> }</span>
<span class="line" id="L64"> }</span>
<span class="line" id="L65"></span>
<span class="line" id="L66"> <span class="tok-comment">// Remaining. (cuts the stream)</span>
</span>
<span class="line" id="L67"> <span class="tok-kw">if</span> (i != buf.len) {</span>
<span class="line" id="L68"> <span class="tok-kw">var</span> n = self.next();</span>
<span class="line" id="L69"> <span class="tok-kw">while</span> (i < buf.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L70"> buf[i] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(n));</span>
<span class="line" id="L71"> n >>= <span class="tok-number">8</span>;</span>
<span class="line" id="L72"> }</span>
<span class="line" id="L73"> }</span>
<span class="line" id="L74">}</span>
<span class="line" id="L75"></span>
<span class="line" id="L76"><span class="tok-kw">test</span> <span class="tok-str">"RomuTrio sequence"</span> {</span>
<span class="line" id="L77"> <span class="tok-comment">// Unfortunately there does not seem to be an official test sequence.</span>
</span>
<span class="line" id="L78"> <span class="tok-kw">var</span> r = RomuTrio.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L79"></span>
<span class="line" id="L80"> <span class="tok-kw">const</span> seq = [_]<span class="tok-type">u64</span>{</span>
<span class="line" id="L81"> <span class="tok-number">16294208416658607535</span>,</span>
<span class="line" id="L82"> <span class="tok-number">13964609475759908645</span>,</span>
<span class="line" id="L83"> <span class="tok-number">4703697494102998476</span>,</span>
<span class="line" id="L84"> <span class="tok-number">3425221541186733346</span>,</span>
<span class="line" id="L85"> <span class="tok-number">2285772463536419399</span>,</span>
<span class="line" id="L86"> <span class="tok-number">9454187757529463048</span>,</span>
<span class="line" id="L87"> <span class="tok-number">13695907680080547496</span>,</span>
<span class="line" id="L88"> <span class="tok-number">8328236714879408626</span>,</span>
<span class="line" id="L89"> <span class="tok-number">12323357569716880909</span>,</span>
<span class="line" id="L90"> <span class="tok-number">12375466223337721820</span>,</span>
<span class="line" id="L91"> };</span>
<span class="line" id="L92"></span>
<span class="line" id="L93"> <span class="tok-kw">for</span> (seq) |s| {</span>
<span class="line" id="L94"> <span class="tok-kw">try</span> std.testing.expectEqual(s, r.next());</span>
<span class="line" id="L95"> }</span>
<span class="line" id="L96">}</span>
<span class="line" id="L97"></span>
<span class="line" id="L98"><span class="tok-kw">test</span> <span class="tok-str">"RomuTrio fill"</span> {</span>
<span class="line" id="L99"> <span class="tok-comment">// Unfortunately there does not seem to be an official test sequence.</span>
</span>
<span class="line" id="L100"> <span class="tok-kw">var</span> r = RomuTrio.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L101"></span>
<span class="line" id="L102"> <span class="tok-kw">const</span> seq = [_]<span class="tok-type">u64</span>{</span>
<span class="line" id="L103"> <span class="tok-number">16294208416658607535</span>,</span>
<span class="line" id="L104"> <span class="tok-number">13964609475759908645</span>,</span>
<span class="line" id="L105"> <span class="tok-number">4703697494102998476</span>,</span>
<span class="line" id="L106"> <span class="tok-number">3425221541186733346</span>,</span>
<span class="line" id="L107"> <span class="tok-number">2285772463536419399</span>,</span>
<span class="line" id="L108"> <span class="tok-number">9454187757529463048</span>,</span>
<span class="line" id="L109"> <span class="tok-number">13695907680080547496</span>,</span>
<span class="line" id="L110"> <span class="tok-number">8328236714879408626</span>,</span>
<span class="line" id="L111"> <span class="tok-number">12323357569716880909</span>,</span>
<span class="line" id="L112"> <span class="tok-number">12375466223337721820</span>,</span>
<span class="line" id="L113"> };</span>
<span class="line" id="L114"></span>
<span class="line" id="L115"> <span class="tok-kw">for</span> (seq) |s| {</span>
<span class="line" id="L116"> <span class="tok-kw">var</span> buf0: [<span class="tok-number">8</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L117"> <span class="tok-kw">var</span> buf1: [<span class="tok-number">7</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L118"> std.mem.writeIntLittle(<span class="tok-type">u64</span>, &buf0, s);</span>
<span class="line" id="L119"> r.fill(&buf1);</span>
<span class="line" id="L120"> <span class="tok-kw">try</span> std.testing.expect(std.mem.eql(<span class="tok-type">u8</span>, buf0[<span class="tok-number">0</span>..<span class="tok-number">7</span>], buf1[<span class="tok-number">0</span>..]));</span>
<span class="line" id="L121"> }</span>
<span class="line" id="L122">}</span>
<span class="line" id="L123"></span>
<span class="line" id="L124"><span class="tok-kw">test</span> <span class="tok-str">"RomuTrio buf seeding test"</span> {</span>
<span class="line" id="L125"> <span class="tok-kw">const</span> buf0 = <span class="tok-builtin">@as</span>([<span class="tok-number">24</span>]<span class="tok-type">u8</span>, <span class="tok-builtin">@bitCast</span>([<span class="tok-number">3</span>]<span class="tok-type">u64</span>{ <span class="tok-number">16294208416658607535</span>, <span class="tok-number">13964609475759908645</span>, <span class="tok-number">4703697494102998476</span> }));</span>
<span class="line" id="L126"> <span class="tok-kw">const</span> resulting_state = .{ .x = <span class="tok-number">16294208416658607535</span>, .y = <span class="tok-number">13964609475759908645</span>, .z = <span class="tok-number">4703697494102998476</span> };</span>
<span class="line" id="L127"> <span class="tok-kw">var</span> r = RomuTrio.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L128"> r.seedWithBuf(buf0);</span>
<span class="line" id="L129"> <span class="tok-kw">try</span> std.testing.expect(r.x_state == resulting_state.x);</span>
<span class="line" id="L130"> <span class="tok-kw">try</span> std.testing.expect(r.y_state == resulting_state.y);</span>
<span class="line" id="L131"> <span class="tok-kw">try</span> std.testing.expect(r.z_state == resulting_state.z);</span>
<span class="line" id="L132">}</span>
<span class="line" id="L133"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! Sfc64 pseudo-random number generator from Practically Random.</span></span>
<span class="line" id="L2"><span class="tok-comment">//! Fastest engine of pracrand and smallest footprint.</span></span>
<span class="line" id="L3"><span class="tok-comment">//! See http://pracrand.sourceforge.net/</span></span>
<span class="line" id="L4"></span>
<span class="line" id="L5"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L6"><span class="tok-kw">const</span> Random = std.rand.Random;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> Sfc64 = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L9"></span>
<span class="line" id="L10">a: <span class="tok-type">u64</span> = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L11">b: <span class="tok-type">u64</span> = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L12">c: <span class="tok-type">u64</span> = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L13">counter: <span class="tok-type">u64</span> = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L14"></span>
<span class="line" id="L15"><span class="tok-kw">const</span> Rotation = <span class="tok-number">24</span>;</span>
<span class="line" id="L16"><span class="tok-kw">const</span> RightShift = <span class="tok-number">11</span>;</span>
<span class="line" id="L17"><span class="tok-kw">const</span> LeftShift = <span class="tok-number">3</span>;</span>
<span class="line" id="L18"></span>
<span class="line" id="L19"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(init_s: <span class="tok-type">u64</span>) Sfc64 {</span>
<span class="line" id="L20"> <span class="tok-kw">var</span> x = Sfc64{};</span>
<span class="line" id="L21"></span>
<span class="line" id="L22"> x.seed(init_s);</span>
<span class="line" id="L23"> <span class="tok-kw">return</span> x;</span>
<span class="line" id="L24">}</span>
<span class="line" id="L25"></span>
<span class="line" id="L26"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">random</span>(self: *Sfc64) Random {</span>
<span class="line" id="L27"> <span class="tok-kw">return</span> Random.init(self, fill);</span>
<span class="line" id="L28">}</span>
<span class="line" id="L29"></span>
<span class="line" id="L30"><span class="tok-kw">fn</span> <span class="tok-fn">next</span>(self: *Sfc64) <span class="tok-type">u64</span> {</span>
<span class="line" id="L31"> <span class="tok-kw">const</span> tmp = self.a +% self.b +% self.counter;</span>
<span class="line" id="L32"> self.counter += <span class="tok-number">1</span>;</span>
<span class="line" id="L33"> self.a = self.b ^ (self.b >> RightShift);</span>
<span class="line" id="L34"> self.b = self.c +% (self.c << LeftShift);</span>
<span class="line" id="L35"> self.c = math.rotl(<span class="tok-type">u64</span>, self.c, Rotation) +% tmp;</span>
<span class="line" id="L36"> <span class="tok-kw">return</span> tmp;</span>
<span class="line" id="L37">}</span>
<span class="line" id="L38"></span>
<span class="line" id="L39"><span class="tok-kw">fn</span> <span class="tok-fn">seed</span>(self: *Sfc64, init_s: <span class="tok-type">u64</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L40"> self.a = init_s;</span>
<span class="line" id="L41"> self.b = init_s;</span>
<span class="line" id="L42"> self.c = init_s;</span>
<span class="line" id="L43"> self.counter = <span class="tok-number">1</span>;</span>
<span class="line" id="L44"> <span class="tok-kw">var</span> i: <span class="tok-type">u32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L45"> <span class="tok-kw">while</span> (i < <span class="tok-number">12</span>) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L46"> _ = self.next();</span>
<span class="line" id="L47"> }</span>
<span class="line" id="L48">}</span>
<span class="line" id="L49"></span>
<span class="line" id="L50"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fill</span>(self: *Sfc64, buf: []<span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L51"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L52"> <span class="tok-kw">const</span> aligned_len = buf.len - (buf.len & <span class="tok-number">7</span>);</span>
<span class="line" id="L53"></span>
<span class="line" id="L54"> <span class="tok-comment">// Complete 8 byte segments.</span>
</span>
<span class="line" id="L55"> <span class="tok-kw">while</span> (i < aligned_len) : (i += <span class="tok-number">8</span>) {</span>
<span class="line" id="L56"> <span class="tok-kw">var</span> n = self.next();</span>
<span class="line" id="L57"> <span class="tok-kw">comptime</span> <span class="tok-kw">var</span> j: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L58"> <span class="tok-kw">inline</span> <span class="tok-kw">while</span> (j < <span class="tok-number">8</span>) : (j += <span class="tok-number">1</span>) {</span>
<span class="line" id="L59"> buf[i + j] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(n));</span>
<span class="line" id="L60"> n >>= <span class="tok-number">8</span>;</span>
<span class="line" id="L61"> }</span>
<span class="line" id="L62"> }</span>
<span class="line" id="L63"></span>
<span class="line" id="L64"> <span class="tok-comment">// Remaining. (cuts the stream)</span>
</span>
<span class="line" id="L65"> <span class="tok-kw">if</span> (i != buf.len) {</span>
<span class="line" id="L66"> <span class="tok-kw">var</span> n = self.next();</span>
<span class="line" id="L67"> <span class="tok-kw">while</span> (i < buf.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L68"> buf[i] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(n));</span>
<span class="line" id="L69"> n >>= <span class="tok-number">8</span>;</span>
<span class="line" id="L70"> }</span>
<span class="line" id="L71"> }</span>
<span class="line" id="L72">}</span>
<span class="line" id="L73"></span>
<span class="line" id="L74"><span class="tok-kw">test</span> <span class="tok-str">"Sfc64 sequence"</span> {</span>
<span class="line" id="L75"> <span class="tok-comment">// Unfortunately there does not seem to be an official test sequence.</span>
</span>
<span class="line" id="L76"> <span class="tok-kw">var</span> r = Sfc64.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L77"></span>
<span class="line" id="L78"> <span class="tok-kw">const</span> seq = [_]<span class="tok-type">u64</span>{</span>
<span class="line" id="L79"> <span class="tok-number">0x3acfa029e3cc6041</span>,</span>
<span class="line" id="L80"> <span class="tok-number">0xf5b6515bf2ee419c</span>,</span>
<span class="line" id="L81"> <span class="tok-number">0x1259635894a29b61</span>,</span>
<span class="line" id="L82"> <span class="tok-number">0xb6ae75395f8ebd6</span>,</span>
<span class="line" id="L83"> <span class="tok-number">0x225622285ce302e2</span>,</span>
<span class="line" id="L84"> <span class="tok-number">0x520d28611395cb21</span>,</span>
<span class="line" id="L85"> <span class="tok-number">0xdb909c818901599d</span>,</span>
<span class="line" id="L86"> <span class="tok-number">0x8ffd195365216f57</span>,</span>
<span class="line" id="L87"> <span class="tok-number">0xe8c4ad5e258ac04a</span>,</span>
<span class="line" id="L88"> <span class="tok-number">0x8f8ef2c89fdb63ca</span>,</span>
<span class="line" id="L89"> <span class="tok-number">0xf9865b01d98d8e2f</span>,</span>
<span class="line" id="L90"> <span class="tok-number">0x46555871a65d08ba</span>,</span>
<span class="line" id="L91"> <span class="tok-number">0x66868677c6298fcd</span>,</span>
<span class="line" id="L92"> <span class="tok-number">0x2ce15a7e6329f57d</span>,</span>
<span class="line" id="L93"> <span class="tok-number">0xb2f1833ca91ca79</span>,</span>
<span class="line" id="L94"> <span class="tok-number">0x4b0890ac9bf453ca</span>,</span>
<span class="line" id="L95"> };</span>
<span class="line" id="L96"></span>
<span class="line" id="L97"> <span class="tok-kw">for</span> (seq) |s| {</span>
<span class="line" id="L98"> <span class="tok-kw">try</span> std.testing.expectEqual(s, r.next());</span>
<span class="line" id="L99"> }</span>
<span class="line" id="L100">}</span>
<span class="line" id="L101"></span>
<span class="line" id="L102"><span class="tok-kw">test</span> <span class="tok-str">"Sfc64 fill"</span> {</span>
<span class="line" id="L103"> <span class="tok-comment">// Unfortunately there does not seem to be an official test sequence.</span>
</span>
<span class="line" id="L104"> <span class="tok-kw">var</span> r = Sfc64.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L105"></span>
<span class="line" id="L106"> <span class="tok-kw">const</span> seq = [_]<span class="tok-type">u64</span>{</span>
<span class="line" id="L107"> <span class="tok-number">0x3acfa029e3cc6041</span>,</span>
<span class="line" id="L108"> <span class="tok-number">0xf5b6515bf2ee419c</span>,</span>
<span class="line" id="L109"> <span class="tok-number">0x1259635894a29b61</span>,</span>
<span class="line" id="L110"> <span class="tok-number">0xb6ae75395f8ebd6</span>,</span>
<span class="line" id="L111"> <span class="tok-number">0x225622285ce302e2</span>,</span>
<span class="line" id="L112"> <span class="tok-number">0x520d28611395cb21</span>,</span>
<span class="line" id="L113"> <span class="tok-number">0xdb909c818901599d</span>,</span>
<span class="line" id="L114"> <span class="tok-number">0x8ffd195365216f57</span>,</span>
<span class="line" id="L115"> <span class="tok-number">0xe8c4ad5e258ac04a</span>,</span>
<span class="line" id="L116"> <span class="tok-number">0x8f8ef2c89fdb63ca</span>,</span>
<span class="line" id="L117"> <span class="tok-number">0xf9865b01d98d8e2f</span>,</span>
<span class="line" id="L118"> <span class="tok-number">0x46555871a65d08ba</span>,</span>
<span class="line" id="L119"> <span class="tok-number">0x66868677c6298fcd</span>,</span>
<span class="line" id="L120"> <span class="tok-number">0x2ce15a7e6329f57d</span>,</span>
<span class="line" id="L121"> <span class="tok-number">0xb2f1833ca91ca79</span>,</span>
<span class="line" id="L122"> <span class="tok-number">0x4b0890ac9bf453ca</span>,</span>
<span class="line" id="L123"> };</span>
<span class="line" id="L124"></span>
<span class="line" id="L125"> <span class="tok-kw">for</span> (seq) |s| {</span>
<span class="line" id="L126"> <span class="tok-kw">var</span> buf0: [<span class="tok-number">8</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L127"> <span class="tok-kw">var</span> buf1: [<span class="tok-number">7</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L128"> std.mem.writeIntLittle(<span class="tok-type">u64</span>, &buf0, s);</span>
<span class="line" id="L129"> r.fill(&buf1);</span>
<span class="line" id="L130"> <span class="tok-kw">try</span> std.testing.expect(std.mem.eql(<span class="tok-type">u8</span>, buf0[<span class="tok-number">0</span>..<span class="tok-number">7</span>], buf1[<span class="tok-number">0</span>..]));</span>
<span class="line" id="L131"> }</span>
<span class="line" id="L132">}</span>
<span class="line" id="L133"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! ISAAC64 - http://www.burtleburtle.net/bob/rand/isaacafa.html</span></span>
<span class="line" id="L2"><span class="tok-comment">//!</span></span>
<span class="line" id="L3"><span class="tok-comment">//! Follows the general idea of the implementation from here with a few shortcuts.</span></span>
<span class="line" id="L4"><span class="tok-comment">//! https://doc.rust-lang.org/rand/src/rand/prng/isaac64.rs.html</span></span>
<span class="line" id="L5"></span>
<span class="line" id="L6"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L7"><span class="tok-kw">const</span> Random = std.rand.Random;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L9"><span class="tok-kw">const</span> Isaac64 = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L10"></span>
<span class="line" id="L11">r: [<span class="tok-number">256</span>]<span class="tok-type">u64</span>,</span>
<span class="line" id="L12">m: [<span class="tok-number">256</span>]<span class="tok-type">u64</span>,</span>
<span class="line" id="L13">a: <span class="tok-type">u64</span>,</span>
<span class="line" id="L14">b: <span class="tok-type">u64</span>,</span>
<span class="line" id="L15">c: <span class="tok-type">u64</span>,</span>
<span class="line" id="L16">i: <span class="tok-type">usize</span>,</span>
<span class="line" id="L17"></span>
<span class="line" id="L18"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(init_s: <span class="tok-type">u64</span>) Isaac64 {</span>
<span class="line" id="L19"> <span class="tok-kw">var</span> isaac = Isaac64{</span>
<span class="line" id="L20"> .r = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L21"> .m = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L22"> .a = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L23"> .b = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L24"> .c = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L25"> .i = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L26"> };</span>
<span class="line" id="L27"></span>
<span class="line" id="L28"> <span class="tok-comment">// seed == 0 => same result as the unseeded reference implementation</span>
</span>
<span class="line" id="L29"> isaac.seed(init_s, <span class="tok-number">1</span>);</span>
<span class="line" id="L30"> <span class="tok-kw">return</span> isaac;</span>
<span class="line" id="L31">}</span>
<span class="line" id="L32"></span>
<span class="line" id="L33"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">random</span>(self: *Isaac64) Random {</span>
<span class="line" id="L34"> <span class="tok-kw">return</span> Random.init(self, fill);</span>
<span class="line" id="L35">}</span>
<span class="line" id="L36"></span>
<span class="line" id="L37"><span class="tok-kw">fn</span> <span class="tok-fn">step</span>(self: *Isaac64, mix: <span class="tok-type">u64</span>, base: <span class="tok-type">usize</span>, <span class="tok-kw">comptime</span> m1: <span class="tok-type">usize</span>, <span class="tok-kw">comptime</span> m2: <span class="tok-type">usize</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L38"> <span class="tok-kw">const</span> x = self.m[base + m1];</span>
<span class="line" id="L39"> self.a = mix +% self.m[base + m2];</span>
<span class="line" id="L40"></span>
<span class="line" id="L41"> <span class="tok-kw">const</span> y = self.a +% self.b +% self.m[<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>((x >> <span class="tok-number">3</span>) % self.m.len))];</span>
<span class="line" id="L42"> self.m[base + m1] = y;</span>
<span class="line" id="L43"></span>
<span class="line" id="L44"> self.b = x +% self.m[<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>((y >> <span class="tok-number">11</span>) % self.m.len))];</span>
<span class="line" id="L45"> self.r[self.r.len - <span class="tok-number">1</span> - base - m1] = self.b;</span>
<span class="line" id="L46">}</span>
<span class="line" id="L47"></span>
<span class="line" id="L48"><span class="tok-kw">fn</span> <span class="tok-fn">refill</span>(self: *Isaac64) <span class="tok-type">void</span> {</span>
<span class="line" id="L49"> <span class="tok-kw">const</span> midpoint = self.r.len / <span class="tok-number">2</span>;</span>
<span class="line" id="L50"></span>
<span class="line" id="L51"> self.c +%= <span class="tok-number">1</span>;</span>
<span class="line" id="L52"> self.b +%= self.c;</span>
<span class="line" id="L53"></span>
<span class="line" id="L54"> {</span>
<span class="line" id="L55"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L56"> <span class="tok-kw">while</span> (i < midpoint) : (i += <span class="tok-number">4</span>) {</span>
<span class="line" id="L57"> self.step(~(self.a ^ (self.a << <span class="tok-number">21</span>)), i + <span class="tok-number">0</span>, <span class="tok-number">0</span>, midpoint);</span>
<span class="line" id="L58"> self.step(self.a ^ (self.a >> <span class="tok-number">5</span>), i + <span class="tok-number">1</span>, <span class="tok-number">0</span>, midpoint);</span>
<span class="line" id="L59"> self.step(self.a ^ (self.a << <span class="tok-number">12</span>), i + <span class="tok-number">2</span>, <span class="tok-number">0</span>, midpoint);</span>
<span class="line" id="L60"> self.step(self.a ^ (self.a >> <span class="tok-number">33</span>), i + <span class="tok-number">3</span>, <span class="tok-number">0</span>, midpoint);</span>
<span class="line" id="L61"> }</span>
<span class="line" id="L62"> }</span>
<span class="line" id="L63"></span>
<span class="line" id="L64"> {</span>
<span class="line" id="L65"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L66"> <span class="tok-kw">while</span> (i < midpoint) : (i += <span class="tok-number">4</span>) {</span>
<span class="line" id="L67"> self.step(~(self.a ^ (self.a << <span class="tok-number">21</span>)), i + <span class="tok-number">0</span>, midpoint, <span class="tok-number">0</span>);</span>
<span class="line" id="L68"> self.step(self.a ^ (self.a >> <span class="tok-number">5</span>), i + <span class="tok-number">1</span>, midpoint, <span class="tok-number">0</span>);</span>
<span class="line" id="L69"> self.step(self.a ^ (self.a << <span class="tok-number">12</span>), i + <span class="tok-number">2</span>, midpoint, <span class="tok-number">0</span>);</span>
<span class="line" id="L70"> self.step(self.a ^ (self.a >> <span class="tok-number">33</span>), i + <span class="tok-number">3</span>, midpoint, <span class="tok-number">0</span>);</span>
<span class="line" id="L71"> }</span>
<span class="line" id="L72"> }</span>
<span class="line" id="L73"></span>
<span class="line" id="L74"> self.i = <span class="tok-number">0</span>;</span>
<span class="line" id="L75">}</span>
<span class="line" id="L76"></span>
<span class="line" id="L77"><span class="tok-kw">fn</span> <span class="tok-fn">next</span>(self: *Isaac64) <span class="tok-type">u64</span> {</span>
<span class="line" id="L78"> <span class="tok-kw">if</span> (self.i >= self.r.len) {</span>
<span class="line" id="L79"> self.refill();</span>
<span class="line" id="L80"> }</span>
<span class="line" id="L81"></span>
<span class="line" id="L82"> <span class="tok-kw">const</span> value = self.r[self.i];</span>
<span class="line" id="L83"> self.i += <span class="tok-number">1</span>;</span>
<span class="line" id="L84"> <span class="tok-kw">return</span> value;</span>
<span class="line" id="L85">}</span>
<span class="line" id="L86"></span>
<span class="line" id="L87"><span class="tok-kw">fn</span> <span class="tok-fn">seed</span>(self: *Isaac64, init_s: <span class="tok-type">u64</span>, <span class="tok-kw">comptime</span> rounds: <span class="tok-type">usize</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L88"> <span class="tok-comment">// We ignore the multi-pass requirement since we don't currently expose full access to</span>
</span>
<span class="line" id="L89"> <span class="tok-comment">// seeding the self.m array completely.</span>
</span>
<span class="line" id="L90"> <span class="tok-builtin">@memset</span>(self.m[<span class="tok-number">0</span>..], <span class="tok-number">0</span>);</span>
<span class="line" id="L91"> self.m[<span class="tok-number">0</span>] = init_s;</span>
<span class="line" id="L92"></span>
<span class="line" id="L93"> <span class="tok-comment">// prescrambled golden ratio constants</span>
</span>
<span class="line" id="L94"> <span class="tok-kw">var</span> a = [_]<span class="tok-type">u64</span>{</span>
<span class="line" id="L95"> <span class="tok-number">0x647c4677a2884b7c</span>,</span>
<span class="line" id="L96"> <span class="tok-number">0xb9f8b322c73ac862</span>,</span>
<span class="line" id="L97"> <span class="tok-number">0x8c0ea5053d4712a0</span>,</span>
<span class="line" id="L98"> <span class="tok-number">0xb29b2e824a595524</span>,</span>
<span class="line" id="L99"> <span class="tok-number">0x82f053db8355e0ce</span>,</span>
<span class="line" id="L100"> <span class="tok-number">0x48fe4a0fa5a09315</span>,</span>
<span class="line" id="L101"> <span class="tok-number">0xae985bf2cbfc89ed</span>,</span>
<span class="line" id="L102"> <span class="tok-number">0x98f5704f6c44c0ab</span>,</span>
<span class="line" id="L103"> };</span>
<span class="line" id="L104"></span>
<span class="line" id="L105"> <span class="tok-kw">comptime</span> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L106"> <span class="tok-kw">inline</span> <span class="tok-kw">while</span> (i < rounds) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L107"> <span class="tok-kw">var</span> j: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L108"> <span class="tok-kw">while</span> (j < self.m.len) : (j += <span class="tok-number">8</span>) {</span>
<span class="line" id="L109"> <span class="tok-kw">comptime</span> <span class="tok-kw">var</span> x1: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L110"> <span class="tok-kw">inline</span> <span class="tok-kw">while</span> (x1 < <span class="tok-number">8</span>) : (x1 += <span class="tok-number">1</span>) {</span>
<span class="line" id="L111"> a[x1] +%= self.m[j + x1];</span>
<span class="line" id="L112"> }</span>
<span class="line" id="L113"></span>
<span class="line" id="L114"> a[<span class="tok-number">0</span>] -%= a[<span class="tok-number">4</span>];</span>
<span class="line" id="L115"> a[<span class="tok-number">5</span>] ^= a[<span class="tok-number">7</span>] >> <span class="tok-number">9</span>;</span>
<span class="line" id="L116"> a[<span class="tok-number">7</span>] +%= a[<span class="tok-number">0</span>];</span>
<span class="line" id="L117"> a[<span class="tok-number">1</span>] -%= a[<span class="tok-number">5</span>];</span>
<span class="line" id="L118"> a[<span class="tok-number">6</span>] ^= a[<span class="tok-number">0</span>] << <span class="tok-number">9</span>;</span>
<span class="line" id="L119"> a[<span class="tok-number">0</span>] +%= a[<span class="tok-number">1</span>];</span>
<span class="line" id="L120"> a[<span class="tok-number">2</span>] -%= a[<span class="tok-number">6</span>];</span>
<span class="line" id="L121"> a[<span class="tok-number">7</span>] ^= a[<span class="tok-number">1</span>] >> <span class="tok-number">23</span>;</span>
<span class="line" id="L122"> a[<span class="tok-number">1</span>] +%= a[<span class="tok-number">2</span>];</span>
<span class="line" id="L123"> a[<span class="tok-number">3</span>] -%= a[<span class="tok-number">7</span>];</span>
<span class="line" id="L124"> a[<span class="tok-number">0</span>] ^= a[<span class="tok-number">2</span>] << <span class="tok-number">15</span>;</span>
<span class="line" id="L125"> a[<span class="tok-number">2</span>] +%= a[<span class="tok-number">3</span>];</span>
<span class="line" id="L126"> a[<span class="tok-number">4</span>] -%= a[<span class="tok-number">0</span>];</span>
<span class="line" id="L127"> a[<span class="tok-number">1</span>] ^= a[<span class="tok-number">3</span>] >> <span class="tok-number">14</span>;</span>
<span class="line" id="L128"> a[<span class="tok-number">3</span>] +%= a[<span class="tok-number">4</span>];</span>
<span class="line" id="L129"> a[<span class="tok-number">5</span>] -%= a[<span class="tok-number">1</span>];</span>
<span class="line" id="L130"> a[<span class="tok-number">2</span>] ^= a[<span class="tok-number">4</span>] << <span class="tok-number">20</span>;</span>
<span class="line" id="L131"> a[<span class="tok-number">4</span>] +%= a[<span class="tok-number">5</span>];</span>
<span class="line" id="L132"> a[<span class="tok-number">6</span>] -%= a[<span class="tok-number">2</span>];</span>
<span class="line" id="L133"> a[<span class="tok-number">3</span>] ^= a[<span class="tok-number">5</span>] >> <span class="tok-number">17</span>;</span>
<span class="line" id="L134"> a[<span class="tok-number">5</span>] +%= a[<span class="tok-number">6</span>];</span>
<span class="line" id="L135"> a[<span class="tok-number">7</span>] -%= a[<span class="tok-number">3</span>];</span>
<span class="line" id="L136"> a[<span class="tok-number">4</span>] ^= a[<span class="tok-number">6</span>] << <span class="tok-number">14</span>;</span>
<span class="line" id="L137"> a[<span class="tok-number">6</span>] +%= a[<span class="tok-number">7</span>];</span>
<span class="line" id="L138"></span>
<span class="line" id="L139"> <span class="tok-kw">comptime</span> <span class="tok-kw">var</span> x2: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L140"> <span class="tok-kw">inline</span> <span class="tok-kw">while</span> (x2 < <span class="tok-number">8</span>) : (x2 += <span class="tok-number">1</span>) {</span>
<span class="line" id="L141"> self.m[j + x2] = a[x2];</span>
<span class="line" id="L142"> }</span>
<span class="line" id="L143"> }</span>
<span class="line" id="L144"> }</span>
<span class="line" id="L145"></span>
<span class="line" id="L146"> <span class="tok-builtin">@memset</span>(self.r[<span class="tok-number">0</span>..], <span class="tok-number">0</span>);</span>
<span class="line" id="L147"> self.a = <span class="tok-number">0</span>;</span>
<span class="line" id="L148"> self.b = <span class="tok-number">0</span>;</span>
<span class="line" id="L149"> self.c = <span class="tok-number">0</span>;</span>
<span class="line" id="L150"> self.i = self.r.len; <span class="tok-comment">// trigger refill on first value</span>
</span>
<span class="line" id="L151">}</span>
<span class="line" id="L152"></span>
<span class="line" id="L153"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fill</span>(self: *Isaac64, buf: []<span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L154"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L155"> <span class="tok-kw">const</span> aligned_len = buf.len - (buf.len & <span class="tok-number">7</span>);</span>
<span class="line" id="L156"></span>
<span class="line" id="L157"> <span class="tok-comment">// Fill complete 64-byte segments</span>
</span>
<span class="line" id="L158"> <span class="tok-kw">while</span> (i < aligned_len) : (i += <span class="tok-number">8</span>) {</span>
<span class="line" id="L159"> <span class="tok-kw">var</span> n = self.next();</span>
<span class="line" id="L160"> <span class="tok-kw">comptime</span> <span class="tok-kw">var</span> j: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L161"> <span class="tok-kw">inline</span> <span class="tok-kw">while</span> (j < <span class="tok-number">8</span>) : (j += <span class="tok-number">1</span>) {</span>
<span class="line" id="L162"> buf[i + j] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(n));</span>
<span class="line" id="L163"> n >>= <span class="tok-number">8</span>;</span>
<span class="line" id="L164"> }</span>
<span class="line" id="L165"> }</span>
<span class="line" id="L166"></span>
<span class="line" id="L167"> <span class="tok-comment">// Fill trailing, ignoring excess (cut the stream).</span>
</span>
<span class="line" id="L168"> <span class="tok-kw">if</span> (i != buf.len) {</span>
<span class="line" id="L169"> <span class="tok-kw">var</span> n = self.next();</span>
<span class="line" id="L170"> <span class="tok-kw">while</span> (i < buf.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L171"> buf[i] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(n));</span>
<span class="line" id="L172"> n >>= <span class="tok-number">8</span>;</span>
<span class="line" id="L173"> }</span>
<span class="line" id="L174"> }</span>
<span class="line" id="L175">}</span>
<span class="line" id="L176"></span>
<span class="line" id="L177"><span class="tok-kw">test</span> <span class="tok-str">"isaac64 sequence"</span> {</span>
<span class="line" id="L178"> <span class="tok-kw">var</span> r = Isaac64.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L179"></span>
<span class="line" id="L180"> <span class="tok-comment">// from reference implementation</span>
</span>
<span class="line" id="L181"> <span class="tok-kw">const</span> seq = [_]<span class="tok-type">u64</span>{</span>
<span class="line" id="L182"> <span class="tok-number">0xf67dfba498e4937c</span>,</span>
<span class="line" id="L183"> <span class="tok-number">0x84a5066a9204f380</span>,</span>
<span class="line" id="L184"> <span class="tok-number">0xfee34bd5f5514dbb</span>,</span>
<span class="line" id="L185"> <span class="tok-number">0x4d1664739b8f80d6</span>,</span>
<span class="line" id="L186"> <span class="tok-number">0x8607459ab52a14aa</span>,</span>
<span class="line" id="L187"> <span class="tok-number">0x0e78bc5a98529e49</span>,</span>
<span class="line" id="L188"> <span class="tok-number">0xfe5332822ad13777</span>,</span>
<span class="line" id="L189"> <span class="tok-number">0x556c27525e33d01a</span>,</span>
<span class="line" id="L190"> <span class="tok-number">0x08643ca615f3149f</span>,</span>
<span class="line" id="L191"> <span class="tok-number">0xd0771faf3cb04714</span>,</span>
<span class="line" id="L192"> <span class="tok-number">0x30e86f68a37b008d</span>,</span>
<span class="line" id="L193"> <span class="tok-number">0x3074ebc0488a3adf</span>,</span>
<span class="line" id="L194"> <span class="tok-number">0x270645ea7a2790bc</span>,</span>
<span class="line" id="L195"> <span class="tok-number">0x5601a0a8d3763c6a</span>,</span>
<span class="line" id="L196"> <span class="tok-number">0x2f83071f53f325dd</span>,</span>
<span class="line" id="L197"> <span class="tok-number">0xb9090f3d42d2d2ea</span>,</span>
<span class="line" id="L198"> };</span>
<span class="line" id="L199"></span>
<span class="line" id="L200"> <span class="tok-kw">for</span> (seq) |s| {</span>
<span class="line" id="L201"> <span class="tok-kw">try</span> std.testing.expect(s == r.next());</span>
<span class="line" id="L202"> }</span>
<span class="line" id="L203">}</span>
<span class="line" id="L204"></span>
<span class="line" id="L205"><span class="tok-kw">test</span> <span class="tok-str">"isaac64 fill"</span> {</span>
<span class="line" id="L206"> <span class="tok-kw">var</span> r = Isaac64.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L207"></span>
<span class="line" id="L208"> <span class="tok-comment">// from reference implementation</span>
</span>
<span class="line" id="L209"> <span class="tok-kw">const</span> seq = [_]<span class="tok-type">u64</span>{</span>
<span class="line" id="L210"> <span class="tok-number">0xf67dfba498e4937c</span>,</span>
<span class="line" id="L211"> <span class="tok-number">0x84a5066a9204f380</span>,</span>
<span class="line" id="L212"> <span class="tok-number">0xfee34bd5f5514dbb</span>,</span>
<span class="line" id="L213"> <span class="tok-number">0x4d1664739b8f80d6</span>,</span>
<span class="line" id="L214"> <span class="tok-number">0x8607459ab52a14aa</span>,</span>
<span class="line" id="L215"> <span class="tok-number">0x0e78bc5a98529e49</span>,</span>
<span class="line" id="L216"> <span class="tok-number">0xfe5332822ad13777</span>,</span>
<span class="line" id="L217"> <span class="tok-number">0x556c27525e33d01a</span>,</span>
<span class="line" id="L218"> <span class="tok-number">0x08643ca615f3149f</span>,</span>
<span class="line" id="L219"> <span class="tok-number">0xd0771faf3cb04714</span>,</span>
<span class="line" id="L220"> <span class="tok-number">0x30e86f68a37b008d</span>,</span>
<span class="line" id="L221"> <span class="tok-number">0x3074ebc0488a3adf</span>,</span>
<span class="line" id="L222"> <span class="tok-number">0x270645ea7a2790bc</span>,</span>
<span class="line" id="L223"> <span class="tok-number">0x5601a0a8d3763c6a</span>,</span>
<span class="line" id="L224"> <span class="tok-number">0x2f83071f53f325dd</span>,</span>
<span class="line" id="L225"> <span class="tok-number">0xb9090f3d42d2d2ea</span>,</span>
<span class="line" id="L226"> };</span>
<span class="line" id="L227"></span>
<span class="line" id="L228"> <span class="tok-kw">for</span> (seq) |s| {</span>
<span class="line" id="L229"> <span class="tok-kw">var</span> buf0: [<span class="tok-number">8</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L230"> <span class="tok-kw">var</span> buf1: [<span class="tok-number">7</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L231"> std.mem.writeIntLittle(<span class="tok-type">u64</span>, &buf0, s);</span>
<span class="line" id="L232"> r.fill(&buf1);</span>
<span class="line" id="L233"> <span class="tok-kw">try</span> std.testing.expect(std.mem.eql(<span class="tok-type">u8</span>, buf0[<span class="tok-number">0</span>..<span class="tok-number">7</span>], buf1[<span class="tok-number">0</span>..]));</span>
<span class="line" id="L234"> }</span>
<span class="line" id="L235">}</span>
<span class="line" id="L236"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! PCG32 - http://www.pcg-random.org/</span></span>
<span class="line" id="L2"><span class="tok-comment">//!</span></span>
<span class="line" id="L3"><span class="tok-comment">//! PRNG</span></span>
<span class="line" id="L4"></span>
<span class="line" id="L5"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L6"><span class="tok-kw">const</span> Random = std.rand.Random;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> Pcg = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L8"></span>
<span class="line" id="L9"><span class="tok-kw">const</span> default_multiplier = <span class="tok-number">6364136223846793005</span>;</span>
<span class="line" id="L10"></span>
<span class="line" id="L11">s: <span class="tok-type">u64</span>,</span>
<span class="line" id="L12">i: <span class="tok-type">u64</span>,</span>
<span class="line" id="L13"></span>
<span class="line" id="L14"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(init_s: <span class="tok-type">u64</span>) Pcg {</span>
<span class="line" id="L15"> <span class="tok-kw">var</span> pcg = Pcg{</span>
<span class="line" id="L16"> .s = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L17"> .i = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L18"> };</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"> pcg.seed(init_s);</span>
<span class="line" id="L21"> <span class="tok-kw">return</span> pcg;</span>
<span class="line" id="L22">}</span>
<span class="line" id="L23"></span>
<span class="line" id="L24"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">random</span>(self: *Pcg) Random {</span>
<span class="line" id="L25"> <span class="tok-kw">return</span> Random.init(self, fill);</span>
<span class="line" id="L26">}</span>
<span class="line" id="L27"></span>
<span class="line" id="L28"><span class="tok-kw">fn</span> <span class="tok-fn">next</span>(self: *Pcg) <span class="tok-type">u32</span> {</span>
<span class="line" id="L29"> <span class="tok-kw">const</span> l = self.s;</span>
<span class="line" id="L30"> self.s = l *% default_multiplier +% (self.i | <span class="tok-number">1</span>);</span>
<span class="line" id="L31"></span>
<span class="line" id="L32"> <span class="tok-kw">const</span> xor_s = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>(((l >> <span class="tok-number">18</span>) ^ l) >> <span class="tok-number">27</span>));</span>
<span class="line" id="L33"> <span class="tok-kw">const</span> rot = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(l >> <span class="tok-number">59</span>));</span>
<span class="line" id="L34"></span>
<span class="line" id="L35"> <span class="tok-kw">return</span> (xor_s >> <span class="tok-builtin">@as</span>(<span class="tok-type">u5</span>, <span class="tok-builtin">@intCast</span>(rot))) | (xor_s << <span class="tok-builtin">@as</span>(<span class="tok-type">u5</span>, <span class="tok-builtin">@intCast</span>((<span class="tok-number">0</span> -% rot) & <span class="tok-number">31</span>)));</span>
<span class="line" id="L36">}</span>
<span class="line" id="L37"></span>
<span class="line" id="L38"><span class="tok-kw">fn</span> <span class="tok-fn">seed</span>(self: *Pcg, init_s: <span class="tok-type">u64</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L39"> <span class="tok-comment">// Pcg requires 128-bits of seed.</span>
</span>
<span class="line" id="L40"> <span class="tok-kw">var</span> gen = std.rand.SplitMix64.init(init_s);</span>
<span class="line" id="L41"> self.seedTwo(gen.next(), gen.next());</span>
<span class="line" id="L42">}</span>
<span class="line" id="L43"></span>
<span class="line" id="L44"><span class="tok-kw">fn</span> <span class="tok-fn">seedTwo</span>(self: *Pcg, init_s: <span class="tok-type">u64</span>, init_i: <span class="tok-type">u64</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L45"> self.s = <span class="tok-number">0</span>;</span>
<span class="line" id="L46"> self.i = (init_s << <span class="tok-number">1</span>) | <span class="tok-number">1</span>;</span>
<span class="line" id="L47"> self.s = self.s *% default_multiplier +% self.i;</span>
<span class="line" id="L48"> self.s +%= init_i;</span>
<span class="line" id="L49"> self.s = self.s *% default_multiplier +% self.i;</span>
<span class="line" id="L50">}</span>
<span class="line" id="L51"></span>
<span class="line" id="L52"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fill</span>(self: *Pcg, buf: []<span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L53"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L54"> <span class="tok-kw">const</span> aligned_len = buf.len - (buf.len & <span class="tok-number">3</span>);</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"> <span class="tok-comment">// Complete 4 byte segments.</span>
</span>
<span class="line" id="L57"> <span class="tok-kw">while</span> (i < aligned_len) : (i += <span class="tok-number">4</span>) {</span>
<span class="line" id="L58"> <span class="tok-kw">var</span> n = self.next();</span>
<span class="line" id="L59"> <span class="tok-kw">comptime</span> <span class="tok-kw">var</span> j: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L60"> <span class="tok-kw">inline</span> <span class="tok-kw">while</span> (j < <span class="tok-number">4</span>) : (j += <span class="tok-number">1</span>) {</span>
<span class="line" id="L61"> buf[i + j] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(n));</span>
<span class="line" id="L62"> n >>= <span class="tok-number">8</span>;</span>
<span class="line" id="L63"> }</span>
<span class="line" id="L64"> }</span>
<span class="line" id="L65"></span>
<span class="line" id="L66"> <span class="tok-comment">// Remaining. (cuts the stream)</span>
</span>
<span class="line" id="L67"> <span class="tok-kw">if</span> (i != buf.len) {</span>
<span class="line" id="L68"> <span class="tok-kw">var</span> n = self.next();</span>
<span class="line" id="L69"> <span class="tok-kw">while</span> (i < buf.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L70"> buf[i] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(n));</span>
<span class="line" id="L71"> n >>= <span class="tok-number">8</span>;</span>
<span class="line" id="L72"> }</span>
<span class="line" id="L73"> }</span>
<span class="line" id="L74">}</span>
<span class="line" id="L75"></span>
<span class="line" id="L76"><span class="tok-kw">test</span> <span class="tok-str">"pcg sequence"</span> {</span>
<span class="line" id="L77"> <span class="tok-kw">var</span> r = Pcg.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L78"> <span class="tok-kw">const</span> s0: <span class="tok-type">u64</span> = <span class="tok-number">0x9394bf54ce5d79de</span>;</span>
<span class="line" id="L79"> <span class="tok-kw">const</span> s1: <span class="tok-type">u64</span> = <span class="tok-number">0x84e9c579ef59bbf7</span>;</span>
<span class="line" id="L80"> r.seedTwo(s0, s1);</span>
<span class="line" id="L81"></span>
<span class="line" id="L82"> <span class="tok-kw">const</span> seq = [_]<span class="tok-type">u32</span>{</span>
<span class="line" id="L83"> <span class="tok-number">2881561918</span>,</span>
<span class="line" id="L84"> <span class="tok-number">3063928540</span>,</span>
<span class="line" id="L85"> <span class="tok-number">1199791034</span>,</span>
<span class="line" id="L86"> <span class="tok-number">2487695858</span>,</span>
<span class="line" id="L87"> <span class="tok-number">1479648952</span>,</span>
<span class="line" id="L88"> <span class="tok-number">3247963454</span>,</span>
<span class="line" id="L89"> };</span>
<span class="line" id="L90"></span>
<span class="line" id="L91"> <span class="tok-kw">for</span> (seq) |s| {</span>
<span class="line" id="L92"> <span class="tok-kw">try</span> std.testing.expect(s == r.next());</span>
<span class="line" id="L93"> }</span>
<span class="line" id="L94">}</span>
<span class="line" id="L95"></span>
<span class="line" id="L96"><span class="tok-kw">test</span> <span class="tok-str">"pcg fill"</span> {</span>
<span class="line" id="L97"> <span class="tok-kw">var</span> r = Pcg.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L98"> <span class="tok-kw">const</span> s0: <span class="tok-type">u64</span> = <span class="tok-number">0x9394bf54ce5d79de</span>;</span>
<span class="line" id="L99"> <span class="tok-kw">const</span> s1: <span class="tok-type">u64</span> = <span class="tok-number">0x84e9c579ef59bbf7</span>;</span>
<span class="line" id="L100"> r.seedTwo(s0, s1);</span>
<span class="line" id="L101"></span>
<span class="line" id="L102"> <span class="tok-kw">const</span> seq = [_]<span class="tok-type">u32</span>{</span>
<span class="line" id="L103"> <span class="tok-number">2881561918</span>,</span>
<span class="line" id="L104"> <span class="tok-number">3063928540</span>,</span>
<span class="line" id="L105"> <span class="tok-number">1199791034</span>,</span>
<span class="line" id="L106"> <span class="tok-number">2487695858</span>,</span>
<span class="line" id="L107"> <span class="tok-number">1479648952</span>,</span>
<span class="line" id="L108"> <span class="tok-number">3247963454</span>,</span>
<span class="line" id="L109"> };</span>
<span class="line" id="L110"></span>
<span class="line" id="L111"> <span class="tok-kw">var</span> i: <span class="tok-type">u32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L112"> <span class="tok-kw">while</span> (i < seq.len) : (i += <span class="tok-number">2</span>) {</span>
<span class="line" id="L113"> <span class="tok-kw">var</span> buf0: [<span class="tok-number">8</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L114"> std.mem.writeIntLittle(<span class="tok-type">u32</span>, buf0[<span class="tok-number">0</span>..<span class="tok-number">4</span>], seq[i]);</span>
<span class="line" id="L115"> std.mem.writeIntLittle(<span class="tok-type">u32</span>, buf0[<span class="tok-number">4</span>..<span class="tok-number">8</span>], seq[i + <span class="tok-number">1</span>]);</span>
<span class="line" id="L116"></span>
<span class="line" id="L117"> <span class="tok-kw">var</span> buf1: [<span class="tok-number">7</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L118"> r.fill(&buf1);</span>
<span class="line" id="L119"></span>
<span class="line" id="L120"> <span class="tok-kw">try</span> std.testing.expect(std.mem.eql(<span class="tok-type">u8</span>, buf0[<span class="tok-number">0</span>..<span class="tok-number">7</span>], buf1[<span class="tok-number">0</span>..]));</span>
<span class="line" id="L121"> }</span>
<span class="line" id="L122">}</span>
<span class="line" id="L123"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/hash/fnv.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-comment">// FNV1a - Fowler-Noll-Vo hash function</span>
</span>
<span class="line" id="L2"><span class="tok-comment">//</span>
</span>
<span class="line" id="L3"><span class="tok-comment">// FNV1a is a fast, non-cryptographic hash function with fairly good distribution properties.</span>
</span>
<span class="line" id="L4"><span class="tok-comment">//</span>
</span>
<span class="line" id="L5"><span class="tok-comment">// https://tools.ietf.org/html/draft-eastlake-fnv-14</span>
</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L8"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L9"></span>
<span class="line" id="L10"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Fnv1a_32 = Fnv1a(<span class="tok-type">u32</span>, <span class="tok-number">0x01000193</span>, <span class="tok-number">0x811c9dc5</span>);</span>
<span class="line" id="L11"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Fnv1a_64 = Fnv1a(<span class="tok-type">u64</span>, <span class="tok-number">0x100000001b3</span>, <span class="tok-number">0xcbf29ce484222325</span>);</span>
<span class="line" id="L12"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Fnv1a_128 = Fnv1a(<span class="tok-type">u128</span>, <span class="tok-number">0x1000000000000000000013b</span>, <span class="tok-number">0x6c62272e07bb014262b821756295c58d</span>);</span>
<span class="line" id="L13"></span>
<span class="line" id="L14"><span class="tok-kw">fn</span> <span class="tok-fn">Fnv1a</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, <span class="tok-kw">comptime</span> prime: T, <span class="tok-kw">comptime</span> offset: T) <span class="tok-type">type</span> {</span>
<span class="line" id="L15"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L16"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L17"></span>
<span class="line" id="L18"> value: T,</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>() Self {</span>
<span class="line" id="L21"> <span class="tok-kw">return</span> Self{ .value = offset };</span>
<span class="line" id="L22"> }</span>
<span class="line" id="L23"></span>
<span class="line" id="L24"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">update</span>(self: *Self, input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L25"> <span class="tok-kw">for</span> (input) |b| {</span>
<span class="line" id="L26"> self.value ^= b;</span>
<span class="line" id="L27"> self.value *%= prime;</span>
<span class="line" id="L28"> }</span>
<span class="line" id="L29"> }</span>
<span class="line" id="L30"></span>
<span class="line" id="L31"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">final</span>(self: *Self) T {</span>
<span class="line" id="L32"> <span class="tok-kw">return</span> self.value;</span>
<span class="line" id="L33"> }</span>
<span class="line" id="L34"></span>
<span class="line" id="L35"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hash</span>(input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) T {</span>
<span class="line" id="L36"> <span class="tok-kw">var</span> c = Self.init();</span>
<span class="line" id="L37"> c.update(input);</span>
<span class="line" id="L38"> <span class="tok-kw">return</span> c.final();</span>
<span class="line" id="L39"> }</span>
<span class="line" id="L40"> };</span>
<span class="line" id="L41">}</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"><span class="tok-kw">test</span> <span class="tok-str">"fnv1a-32"</span> {</span>
<span class="line" id="L44"> <span class="tok-kw">try</span> testing.expect(Fnv1a_32.hash(<span class="tok-str">""</span>) == <span class="tok-number">0x811c9dc5</span>);</span>
<span class="line" id="L45"> <span class="tok-kw">try</span> testing.expect(Fnv1a_32.hash(<span class="tok-str">"a"</span>) == <span class="tok-number">0xe40c292c</span>);</span>
<span class="line" id="L46"> <span class="tok-kw">try</span> testing.expect(Fnv1a_32.hash(<span class="tok-str">"foobar"</span>) == <span class="tok-number">0xbf9cf968</span>);</span>
<span class="line" id="L47">}</span>
<span class="line" id="L48"></span>
<span class="line" id="L49"><span class="tok-kw">test</span> <span class="tok-str">"fnv1a-64"</span> {</span>
<span class="line" id="L50"> <span class="tok-kw">try</span> testing.expect(Fnv1a_64.hash(<span class="tok-str">""</span>) == <span class="tok-number">0xcbf29ce484222325</span>);</span>
<span class="line" id="L51"> <span class="tok-kw">try</span> testing.expect(Fnv1a_64.hash(<span class="tok-str">"a"</span>) == <span class="tok-number">0xaf63dc4c8601ec8c</span>);</span>
<span class="line" id="L52"> <span class="tok-kw">try</span> testing.expect(Fnv1a_64.hash(<span class="tok-str">"foobar"</span>) == <span class="tok-number">0x85944171f73967e8</span>);</span>
<span class="line" id="L53">}</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"><span class="tok-kw">test</span> <span class="tok-str">"fnv1a-128"</span> {</span>
<span class="line" id="L56"> <span class="tok-kw">try</span> testing.expect(Fnv1a_128.hash(<span class="tok-str">""</span>) == <span class="tok-number">0x6c62272e07bb014262b821756295c58d</span>);</span>
<span class="line" id="L57"> <span class="tok-kw">try</span> testing.expect(Fnv1a_128.hash(<span class="tok-str">"a"</span>) == <span class="tok-number">0xd228cb696f1a8caf78912b704e4a8964</span>);</span>
<span class="line" id="L58">}</span>
<span class="line" id="L59"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/hash/crc.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-comment">// There are two implementations of CRC32 implemented with the following key characteristics:</span>
</span>
<span class="line" id="L2"><span class="tok-comment">//</span>
</span>
<span class="line" id="L3"><span class="tok-comment">// - Crc32WithPoly uses 8Kb of tables but is ~10x faster than the small method.</span>
</span>
<span class="line" id="L4"><span class="tok-comment">//</span>
</span>
<span class="line" id="L5"><span class="tok-comment">// - Crc32SmallWithPoly uses only 64 bytes of memory but is slower. Be aware that this is</span>
</span>
<span class="line" id="L6"><span class="tok-comment">// still moderately fast just slow relative to the slicing approach.</span>
</span>
<span class="line" id="L7"></span>
<span class="line" id="L8"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L9"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L10"><span class="tok-kw">const</span> debug = std.debug;</span>
<span class="line" id="L11"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L12"></span>
<span class="line" id="L13"><span class="tok-kw">pub</span> <span class="tok-kw">usingnamespace</span> <span class="tok-builtin">@import</span>(<span class="tok-str">"crc/catalog.zig"</span>);</span>
<span class="line" id="L14"></span>
<span class="line" id="L15"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">Algorithm</span>(<span class="tok-kw">comptime</span> W: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L16"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L17"> polynomial: W,</span>
<span class="line" id="L18"> initial: W,</span>
<span class="line" id="L19"> reflect_input: <span class="tok-type">bool</span>,</span>
<span class="line" id="L20"> reflect_output: <span class="tok-type">bool</span>,</span>
<span class="line" id="L21"> xor_output: W,</span>
<span class="line" id="L22"> };</span>
<span class="line" id="L23">}</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">Crc</span>(<span class="tok-kw">comptime</span> W: <span class="tok-type">type</span>, <span class="tok-kw">comptime</span> algorithm: Algorithm(W)) <span class="tok-type">type</span> {</span>
<span class="line" id="L26"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L27"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L28"> <span class="tok-kw">const</span> I = <span class="tok-kw">if</span> (<span class="tok-builtin">@bitSizeOf</span>(W) < <span class="tok-number">8</span>) <span class="tok-type">u8</span> <span class="tok-kw">else</span> W;</span>
<span class="line" id="L29"> <span class="tok-kw">const</span> lookup_table = blk: {</span>
<span class="line" id="L30"> <span class="tok-builtin">@setEvalBranchQuota</span>(<span class="tok-number">2500</span>);</span>
<span class="line" id="L31"></span>
<span class="line" id="L32"> <span class="tok-kw">const</span> poly = <span class="tok-kw">if</span> (algorithm.reflect_input)</span>
<span class="line" id="L33"> <span class="tok-builtin">@bitReverse</span>(<span class="tok-builtin">@as</span>(I, algorithm.polynomial)) >> (<span class="tok-builtin">@bitSizeOf</span>(I) - <span class="tok-builtin">@bitSizeOf</span>(W))</span>
<span class="line" id="L34"> <span class="tok-kw">else</span></span>
<span class="line" id="L35"> <span class="tok-builtin">@as</span>(I, algorithm.polynomial) << (<span class="tok-builtin">@bitSizeOf</span>(I) - <span class="tok-builtin">@bitSizeOf</span>(W));</span>
<span class="line" id="L36"></span>
<span class="line" id="L37"> <span class="tok-kw">var</span> table: [<span class="tok-number">256</span>]I = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L38"> <span class="tok-kw">for</span> (&table, <span class="tok-number">0</span>..) |*e, i| {</span>
<span class="line" id="L39"> <span class="tok-kw">var</span> crc: I = i;</span>
<span class="line" id="L40"> <span class="tok-kw">if</span> (algorithm.reflect_input) {</span>
<span class="line" id="L41"> <span class="tok-kw">var</span> j: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L42"> <span class="tok-kw">while</span> (j < <span class="tok-number">8</span>) : (j += <span class="tok-number">1</span>) {</span>
<span class="line" id="L43"> crc = (crc >> <span class="tok-number">1</span>) ^ ((crc & <span class="tok-number">1</span>) * poly);</span>
<span class="line" id="L44"> }</span>
<span class="line" id="L45"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L46"> crc <<= <span class="tok-builtin">@bitSizeOf</span>(I) - <span class="tok-number">8</span>;</span>
<span class="line" id="L47"> <span class="tok-kw">var</span> j: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L48"> <span class="tok-kw">while</span> (j < <span class="tok-number">8</span>) : (j += <span class="tok-number">1</span>) {</span>
<span class="line" id="L49"> crc = (crc << <span class="tok-number">1</span>) ^ (((crc >> (<span class="tok-builtin">@bitSizeOf</span>(I) - <span class="tok-number">1</span>)) & <span class="tok-number">1</span>) * poly);</span>
<span class="line" id="L50"> }</span>
<span class="line" id="L51"> }</span>
<span class="line" id="L52"> e.* = crc;</span>
<span class="line" id="L53"> }</span>
<span class="line" id="L54"> <span class="tok-kw">break</span> :blk table;</span>
<span class="line" id="L55"> };</span>
<span class="line" id="L56"></span>
<span class="line" id="L57"> crc: I,</span>
<span class="line" id="L58"></span>
<span class="line" id="L59"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>() Self {</span>
<span class="line" id="L60"> <span class="tok-kw">const</span> initial = <span class="tok-kw">if</span> (algorithm.reflect_input)</span>
<span class="line" id="L61"> <span class="tok-builtin">@bitReverse</span>(<span class="tok-builtin">@as</span>(I, algorithm.initial)) >> (<span class="tok-builtin">@bitSizeOf</span>(I) - <span class="tok-builtin">@bitSizeOf</span>(W))</span>
<span class="line" id="L62"> <span class="tok-kw">else</span></span>
<span class="line" id="L63"> <span class="tok-builtin">@as</span>(I, algorithm.initial) << (<span class="tok-builtin">@bitSizeOf</span>(I) - <span class="tok-builtin">@bitSizeOf</span>(W));</span>
<span class="line" id="L64"> <span class="tok-kw">return</span> Self{ .crc = initial };</span>
<span class="line" id="L65"> }</span>
<span class="line" id="L66"></span>
<span class="line" id="L67"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">tableEntry</span>(index: I) I {</span>
<span class="line" id="L68"> <span class="tok-kw">return</span> lookup_table[<span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(index & <span class="tok-number">0xFF</span>))];</span>
<span class="line" id="L69"> }</span>
<span class="line" id="L70"></span>
<span class="line" id="L71"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">update</span>(self: *Self, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L72"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L73"> <span class="tok-kw">if</span> (<span class="tok-builtin">@bitSizeOf</span>(I) <= <span class="tok-number">8</span>) {</span>
<span class="line" id="L74"> <span class="tok-kw">while</span> (i < bytes.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L75"> self.crc = tableEntry(self.crc ^ bytes[i]);</span>
<span class="line" id="L76"> }</span>
<span class="line" id="L77"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (algorithm.reflect_input) {</span>
<span class="line" id="L78"> <span class="tok-kw">while</span> (i < bytes.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L79"> <span class="tok-kw">const</span> table_index = self.crc ^ bytes[i];</span>
<span class="line" id="L80"> self.crc = tableEntry(table_index) ^ (self.crc >> <span class="tok-number">8</span>);</span>
<span class="line" id="L81"> }</span>
<span class="line" id="L82"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L83"> <span class="tok-kw">while</span> (i < bytes.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L84"> <span class="tok-kw">const</span> table_index = (self.crc >> (<span class="tok-builtin">@bitSizeOf</span>(I) - <span class="tok-number">8</span>)) ^ bytes[i];</span>
<span class="line" id="L85"> self.crc = tableEntry(table_index) ^ (self.crc << <span class="tok-number">8</span>);</span>
<span class="line" id="L86"> }</span>
<span class="line" id="L87"> }</span>
<span class="line" id="L88"> }</span>
<span class="line" id="L89"></span>
<span class="line" id="L90"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">final</span>(self: Self) W {</span>
<span class="line" id="L91"> <span class="tok-kw">var</span> c = self.crc;</span>
<span class="line" id="L92"> <span class="tok-kw">if</span> (algorithm.reflect_input != algorithm.reflect_output) {</span>
<span class="line" id="L93"> c = <span class="tok-builtin">@bitReverse</span>(c);</span>
<span class="line" id="L94"> }</span>
<span class="line" id="L95"> <span class="tok-kw">if</span> (!algorithm.reflect_output) {</span>
<span class="line" id="L96"> c >>= <span class="tok-builtin">@bitSizeOf</span>(I) - <span class="tok-builtin">@bitSizeOf</span>(W);</span>
<span class="line" id="L97"> }</span>
<span class="line" id="L98"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(W, <span class="tok-builtin">@intCast</span>(c ^ algorithm.xor_output));</span>
<span class="line" id="L99"> }</span>
<span class="line" id="L100"></span>
<span class="line" id="L101"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hash</span>(bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) W {</span>
<span class="line" id="L102"> <span class="tok-kw">var</span> c = Self.init();</span>
<span class="line" id="L103"> c.update(bytes);</span>
<span class="line" id="L104"> <span class="tok-kw">return</span> c.final();</span>
<span class="line" id="L105"> }</span>
<span class="line" id="L106"> };</span>
<span class="line" id="L107">}</span>
<span class="line" id="L108"></span>
<span class="line" id="L109"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Polynomial = <span class="tok-kw">enum</span>(<span class="tok-type">u32</span>) {</span>
<span class="line" id="L110"> IEEE = <span class="tok-number">0xedb88320</span>,</span>
<span class="line" id="L111"> Castagnoli = <span class="tok-number">0x82f63b78</span>,</span>
<span class="line" id="L112"> Koopman = <span class="tok-number">0xeb31d82e</span>,</span>
<span class="line" id="L113"> _,</span>
<span class="line" id="L114">};</span>
<span class="line" id="L115"></span>
<span class="line" id="L116"><span class="tok-comment">// IEEE is by far the most common CRC and so is aliased by default.</span>
</span>
<span class="line" id="L117"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc32 = Crc32WithPoly(.IEEE);</span>
<span class="line" id="L118"></span>
<span class="line" id="L119"><span class="tok-comment">// slicing-by-8 crc32 implementation.</span>
</span>
<span class="line" id="L120"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">Crc32WithPoly</span>(<span class="tok-kw">comptime</span> poly: Polynomial) <span class="tok-type">type</span> {</span>
<span class="line" id="L121"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L122"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L123"> <span class="tok-kw">const</span> lookup_tables = block: {</span>
<span class="line" id="L124"> <span class="tok-builtin">@setEvalBranchQuota</span>(<span class="tok-number">20000</span>);</span>
<span class="line" id="L125"> <span class="tok-kw">var</span> tables: [<span class="tok-number">8</span>][<span class="tok-number">256</span>]<span class="tok-type">u32</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L126"></span>
<span class="line" id="L127"> <span class="tok-kw">for</span> (&tables[<span class="tok-number">0</span>], <span class="tok-number">0</span>..) |*e, i| {</span>
<span class="line" id="L128"> <span class="tok-kw">var</span> crc = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(i));</span>
<span class="line" id="L129"> <span class="tok-kw">var</span> j: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L130"> <span class="tok-kw">while</span> (j < <span class="tok-number">8</span>) : (j += <span class="tok-number">1</span>) {</span>
<span class="line" id="L131"> <span class="tok-kw">if</span> (crc & <span class="tok-number">1</span> == <span class="tok-number">1</span>) {</span>
<span class="line" id="L132"> crc = (crc >> <span class="tok-number">1</span>) ^ <span class="tok-builtin">@intFromEnum</span>(poly);</span>
<span class="line" id="L133"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L134"> crc = (crc >> <span class="tok-number">1</span>);</span>
<span class="line" id="L135"> }</span>
<span class="line" id="L136"> }</span>
<span class="line" id="L137"> e.* = crc;</span>
<span class="line" id="L138"> }</span>
<span class="line" id="L139"></span>
<span class="line" id="L140"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L141"> <span class="tok-kw">while</span> (i < <span class="tok-number">256</span>) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L142"> <span class="tok-kw">var</span> crc = tables[<span class="tok-number">0</span>][i];</span>
<span class="line" id="L143"> <span class="tok-kw">var</span> j: <span class="tok-type">usize</span> = <span class="tok-number">1</span>;</span>
<span class="line" id="L144"> <span class="tok-kw">while</span> (j < <span class="tok-number">8</span>) : (j += <span class="tok-number">1</span>) {</span>
<span class="line" id="L145"> <span class="tok-kw">const</span> index = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(crc));</span>
<span class="line" id="L146"> crc = tables[<span class="tok-number">0</span>][index] ^ (crc >> <span class="tok-number">8</span>);</span>
<span class="line" id="L147"> tables[j][i] = crc;</span>
<span class="line" id="L148"> }</span>
<span class="line" id="L149"> }</span>
<span class="line" id="L150"></span>
<span class="line" id="L151"> <span class="tok-kw">break</span> :block tables;</span>
<span class="line" id="L152"> };</span>
<span class="line" id="L153"></span>
<span class="line" id="L154"> crc: <span class="tok-type">u32</span>,</span>
<span class="line" id="L155"></span>
<span class="line" id="L156"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>() Self {</span>
<span class="line" id="L157"> <span class="tok-kw">return</span> Self{ .crc = <span class="tok-number">0xffffffff</span> };</span>
<span class="line" id="L158"> }</span>
<span class="line" id="L159"></span>
<span class="line" id="L160"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">update</span>(self: *Self, input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L161"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L162"> <span class="tok-kw">while</span> (i + <span class="tok-number">8</span> <= input.len) : (i += <span class="tok-number">8</span>) {</span>
<span class="line" id="L163"> <span class="tok-kw">const</span> p = input[i..][<span class="tok-number">0</span>..<span class="tok-number">8</span>];</span>
<span class="line" id="L164"></span>
<span class="line" id="L165"> <span class="tok-comment">// Unrolling this way gives ~50Mb/s increase</span>
</span>
<span class="line" id="L166"> self.crc ^= std.mem.readIntLittle(<span class="tok-type">u32</span>, p[<span class="tok-number">0</span>..<span class="tok-number">4</span>]);</span>
<span class="line" id="L167"></span>
<span class="line" id="L168"> self.crc =</span>
<span class="line" id="L169"> lookup_tables[<span class="tok-number">0</span>][p[<span class="tok-number">7</span>]] ^</span>
<span class="line" id="L170"> lookup_tables[<span class="tok-number">1</span>][p[<span class="tok-number">6</span>]] ^</span>
<span class="line" id="L171"> lookup_tables[<span class="tok-number">2</span>][p[<span class="tok-number">5</span>]] ^</span>
<span class="line" id="L172"> lookup_tables[<span class="tok-number">3</span>][p[<span class="tok-number">4</span>]] ^</span>
<span class="line" id="L173"> lookup_tables[<span class="tok-number">4</span>][<span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(self.crc >> <span class="tok-number">24</span>))] ^</span>
<span class="line" id="L174"> lookup_tables[<span class="tok-number">5</span>][<span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(self.crc >> <span class="tok-number">16</span>))] ^</span>
<span class="line" id="L175"> lookup_tables[<span class="tok-number">6</span>][<span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(self.crc >> <span class="tok-number">8</span>))] ^</span>
<span class="line" id="L176"> lookup_tables[<span class="tok-number">7</span>][<span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(self.crc >> <span class="tok-number">0</span>))];</span>
<span class="line" id="L177"> }</span>
<span class="line" id="L178"></span>
<span class="line" id="L179"> <span class="tok-kw">while</span> (i < input.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L180"> <span class="tok-kw">const</span> index = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(self.crc)) ^ input[i];</span>
<span class="line" id="L181"> self.crc = (self.crc >> <span class="tok-number">8</span>) ^ lookup_tables[<span class="tok-number">0</span>][index];</span>
<span class="line" id="L182"> }</span>
<span class="line" id="L183"> }</span>
<span class="line" id="L184"></span>
<span class="line" id="L185"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">final</span>(self: *Self) <span class="tok-type">u32</span> {</span>
<span class="line" id="L186"> <span class="tok-kw">return</span> ~self.crc;</span>
<span class="line" id="L187"> }</span>
<span class="line" id="L188"></span>
<span class="line" id="L189"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hash</span>(input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L190"> <span class="tok-kw">var</span> c = Self.init();</span>
<span class="line" id="L191"> c.update(input);</span>
<span class="line" id="L192"> <span class="tok-kw">return</span> c.final();</span>
<span class="line" id="L193"> }</span>
<span class="line" id="L194"> };</span>
<span class="line" id="L195">}</span>
<span class="line" id="L196"></span>
<span class="line" id="L197"><span class="tok-kw">test</span> <span class="tok-str">"crc32 ieee"</span> {</span>
<span class="line" id="L198"> <span class="tok-kw">const</span> Crc32Ieee = Crc32WithPoly(.IEEE);</span>
<span class="line" id="L199"></span>
<span class="line" id="L200"> <span class="tok-kw">try</span> testing.expect(Crc32Ieee.hash(<span class="tok-str">""</span>) == <span class="tok-number">0x00000000</span>);</span>
<span class="line" id="L201"> <span class="tok-kw">try</span> testing.expect(Crc32Ieee.hash(<span class="tok-str">"a"</span>) == <span class="tok-number">0xe8b7be43</span>);</span>
<span class="line" id="L202"> <span class="tok-kw">try</span> testing.expect(Crc32Ieee.hash(<span class="tok-str">"abc"</span>) == <span class="tok-number">0x352441c2</span>);</span>
<span class="line" id="L203">}</span>
<span class="line" id="L204"></span>
<span class="line" id="L205"><span class="tok-kw">test</span> <span class="tok-str">"crc32 castagnoli"</span> {</span>
<span class="line" id="L206"> <span class="tok-kw">const</span> Crc32Castagnoli = Crc32WithPoly(.Castagnoli);</span>
<span class="line" id="L207"></span>
<span class="line" id="L208"> <span class="tok-kw">try</span> testing.expect(Crc32Castagnoli.hash(<span class="tok-str">""</span>) == <span class="tok-number">0x00000000</span>);</span>
<span class="line" id="L209"> <span class="tok-kw">try</span> testing.expect(Crc32Castagnoli.hash(<span class="tok-str">"a"</span>) == <span class="tok-number">0xc1d04330</span>);</span>
<span class="line" id="L210"> <span class="tok-kw">try</span> testing.expect(Crc32Castagnoli.hash(<span class="tok-str">"abc"</span>) == <span class="tok-number">0x364b3fb7</span>);</span>
<span class="line" id="L211">}</span>
<span class="line" id="L212"></span>
<span class="line" id="L213"><span class="tok-comment">// half-byte lookup table implementation.</span>
</span>
<span class="line" id="L214"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">Crc32SmallWithPoly</span>(<span class="tok-kw">comptime</span> poly: Polynomial) <span class="tok-type">type</span> {</span>
<span class="line" id="L215"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L216"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L217"> <span class="tok-kw">const</span> lookup_table = block: {</span>
<span class="line" id="L218"> <span class="tok-kw">var</span> table: [<span class="tok-number">16</span>]<span class="tok-type">u32</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L219"></span>
<span class="line" id="L220"> <span class="tok-kw">for</span> (&table, <span class="tok-number">0</span>..) |*e, i| {</span>
<span class="line" id="L221"> <span class="tok-kw">var</span> crc = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(i * <span class="tok-number">16</span>));</span>
<span class="line" id="L222"> <span class="tok-kw">var</span> j: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L223"> <span class="tok-kw">while</span> (j < <span class="tok-number">8</span>) : (j += <span class="tok-number">1</span>) {</span>
<span class="line" id="L224"> <span class="tok-kw">if</span> (crc & <span class="tok-number">1</span> == <span class="tok-number">1</span>) {</span>
<span class="line" id="L225"> crc = (crc >> <span class="tok-number">1</span>) ^ <span class="tok-builtin">@intFromEnum</span>(poly);</span>
<span class="line" id="L226"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L227"> crc = (crc >> <span class="tok-number">1</span>);</span>
<span class="line" id="L228"> }</span>
<span class="line" id="L229"> }</span>
<span class="line" id="L230"> e.* = crc;</span>
<span class="line" id="L231"> }</span>
<span class="line" id="L232"></span>
<span class="line" id="L233"> <span class="tok-kw">break</span> :block table;</span>
<span class="line" id="L234"> };</span>
<span class="line" id="L235"></span>
<span class="line" id="L236"> crc: <span class="tok-type">u32</span>,</span>
<span class="line" id="L237"></span>
<span class="line" id="L238"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>() Self {</span>
<span class="line" id="L239"> <span class="tok-kw">return</span> Self{ .crc = <span class="tok-number">0xffffffff</span> };</span>
<span class="line" id="L240"> }</span>
<span class="line" id="L241"></span>
<span class="line" id="L242"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">update</span>(self: *Self, input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L243"> <span class="tok-kw">for</span> (input) |b| {</span>
<span class="line" id="L244"> self.crc = lookup_table[<span class="tok-builtin">@as</span>(<span class="tok-type">u4</span>, <span class="tok-builtin">@truncate</span>(self.crc ^ (b >> <span class="tok-number">0</span>)))] ^ (self.crc >> <span class="tok-number">4</span>);</span>
<span class="line" id="L245"> self.crc = lookup_table[<span class="tok-builtin">@as</span>(<span class="tok-type">u4</span>, <span class="tok-builtin">@truncate</span>(self.crc ^ (b >> <span class="tok-number">4</span>)))] ^ (self.crc >> <span class="tok-number">4</span>);</span>
<span class="line" id="L246"> }</span>
<span class="line" id="L247"> }</span>
<span class="line" id="L248"></span>
<span class="line" id="L249"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">final</span>(self: *Self) <span class="tok-type">u32</span> {</span>
<span class="line" id="L250"> <span class="tok-kw">return</span> ~self.crc;</span>
<span class="line" id="L251"> }</span>
<span class="line" id="L252"></span>
<span class="line" id="L253"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hash</span>(input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L254"> <span class="tok-kw">var</span> c = Self.init();</span>
<span class="line" id="L255"> c.update(input);</span>
<span class="line" id="L256"> <span class="tok-kw">return</span> c.final();</span>
<span class="line" id="L257"> }</span>
<span class="line" id="L258"> };</span>
<span class="line" id="L259">}</span>
<span class="line" id="L260"></span>
<span class="line" id="L261"><span class="tok-kw">test</span> <span class="tok-str">"small crc32 ieee"</span> {</span>
<span class="line" id="L262"> <span class="tok-kw">const</span> Crc32Ieee = Crc32SmallWithPoly(.IEEE);</span>
<span class="line" id="L263"></span>
<span class="line" id="L264"> <span class="tok-kw">try</span> testing.expect(Crc32Ieee.hash(<span class="tok-str">""</span>) == <span class="tok-number">0x00000000</span>);</span>
<span class="line" id="L265"> <span class="tok-kw">try</span> testing.expect(Crc32Ieee.hash(<span class="tok-str">"a"</span>) == <span class="tok-number">0xe8b7be43</span>);</span>
<span class="line" id="L266"> <span class="tok-kw">try</span> testing.expect(Crc32Ieee.hash(<span class="tok-str">"abc"</span>) == <span class="tok-number">0x352441c2</span>);</span>
<span class="line" id="L267">}</span>
<span class="line" id="L268"></span>
<span class="line" id="L269"><span class="tok-kw">test</span> <span class="tok-str">"small crc32 castagnoli"</span> {</span>
<span class="line" id="L270"> <span class="tok-kw">const</span> Crc32Castagnoli = Crc32SmallWithPoly(.Castagnoli);</span>
<span class="line" id="L271"></span>
<span class="line" id="L272"> <span class="tok-kw">try</span> testing.expect(Crc32Castagnoli.hash(<span class="tok-str">""</span>) == <span class="tok-number">0x00000000</span>);</span>
<span class="line" id="L273"> <span class="tok-kw">try</span> testing.expect(Crc32Castagnoli.hash(<span class="tok-str">"a"</span>) == <span class="tok-number">0xc1d04330</span>);</span>
<span class="line" id="L274"> <span class="tok-kw">try</span> testing.expect(Crc32Castagnoli.hash(<span class="tok-str">"abc"</span>) == <span class="tok-number">0x364b3fb7</span>);</span>
<span class="line" id="L275">}</span>
<span class="line" id="L276"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> native_endian = builtin.target.cpu.arch.endian();</span>
<span class="line" id="L5"></span>
<span class="line" id="L6"><span class="tok-kw">const</span> default_seed: <span class="tok-type">u32</span> = <span class="tok-number">0xc70f6907</span>;</span>
<span class="line" id="L7"></span>
<span class="line" id="L8"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Murmur2_32 = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L9"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L10"></span>
<span class="line" id="L11"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hash</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L12"> <span class="tok-kw">return</span> <span class="tok-builtin">@call</span>(.always_inline, Self.hashWithSeed, .{ str, default_seed });</span>
<span class="line" id="L13"> }</span>
<span class="line" id="L14"></span>
<span class="line" id="L15"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashWithSeed</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, seed: <span class="tok-type">u32</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L16"> <span class="tok-kw">const</span> m: <span class="tok-type">u32</span> = <span class="tok-number">0x5bd1e995</span>;</span>
<span class="line" id="L17"> <span class="tok-kw">const</span> len = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>(str.len));</span>
<span class="line" id="L18"> <span class="tok-kw">var</span> h1: <span class="tok-type">u32</span> = seed ^ len;</span>
<span class="line" id="L19"> <span class="tok-kw">for</span> (<span class="tok-builtin">@as</span>([*]<span class="tok-kw">align</span>(<span class="tok-number">1</span>) <span class="tok-kw">const</span> <span class="tok-type">u32</span>, <span class="tok-builtin">@ptrCast</span>(str.ptr))[<span class="tok-number">0</span>..(len >> <span class="tok-number">2</span>)]) |v| {</span>
<span class="line" id="L20"> <span class="tok-kw">var</span> k1: <span class="tok-type">u32</span> = v;</span>
<span class="line" id="L21"> <span class="tok-kw">if</span> (native_endian == .Big)</span>
<span class="line" id="L22"> k1 = <span class="tok-builtin">@byteSwap</span>(k1);</span>
<span class="line" id="L23"> k1 *%= m;</span>
<span class="line" id="L24"> k1 ^= k1 >> <span class="tok-number">24</span>;</span>
<span class="line" id="L25"> k1 *%= m;</span>
<span class="line" id="L26"> h1 *%= m;</span>
<span class="line" id="L27"> h1 ^= k1;</span>
<span class="line" id="L28"> }</span>
<span class="line" id="L29"> <span class="tok-kw">const</span> offset = len & <span class="tok-number">0xfffffffc</span>;</span>
<span class="line" id="L30"> <span class="tok-kw">const</span> rest = len & <span class="tok-number">3</span>;</span>
<span class="line" id="L31"> <span class="tok-kw">if</span> (rest >= <span class="tok-number">3</span>) {</span>
<span class="line" id="L32"> h1 ^= <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(str[offset + <span class="tok-number">2</span>])) << <span class="tok-number">16</span>;</span>
<span class="line" id="L33"> }</span>
<span class="line" id="L34"> <span class="tok-kw">if</span> (rest >= <span class="tok-number">2</span>) {</span>
<span class="line" id="L35"> h1 ^= <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(str[offset + <span class="tok-number">1</span>])) << <span class="tok-number">8</span>;</span>
<span class="line" id="L36"> }</span>
<span class="line" id="L37"> <span class="tok-kw">if</span> (rest >= <span class="tok-number">1</span>) {</span>
<span class="line" id="L38"> h1 ^= <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(str[offset + <span class="tok-number">0</span>]));</span>
<span class="line" id="L39"> h1 *%= m;</span>
<span class="line" id="L40"> }</span>
<span class="line" id="L41"> h1 ^= h1 >> <span class="tok-number">13</span>;</span>
<span class="line" id="L42"> h1 *%= m;</span>
<span class="line" id="L43"> h1 ^= h1 >> <span class="tok-number">15</span>;</span>
<span class="line" id="L44"> <span class="tok-kw">return</span> h1;</span>
<span class="line" id="L45"> }</span>
<span class="line" id="L46"></span>
<span class="line" id="L47"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashUint32</span>(v: <span class="tok-type">u32</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L48"> <span class="tok-kw">return</span> <span class="tok-builtin">@call</span>(.always_inline, Self.hashUint32WithSeed, .{ v, default_seed });</span>
<span class="line" id="L49"> }</span>
<span class="line" id="L50"></span>
<span class="line" id="L51"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashUint32WithSeed</span>(v: <span class="tok-type">u32</span>, seed: <span class="tok-type">u32</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L52"> <span class="tok-kw">const</span> m: <span class="tok-type">u32</span> = <span class="tok-number">0x5bd1e995</span>;</span>
<span class="line" id="L53"> <span class="tok-kw">const</span> len: <span class="tok-type">u32</span> = <span class="tok-number">4</span>;</span>
<span class="line" id="L54"> <span class="tok-kw">var</span> h1: <span class="tok-type">u32</span> = seed ^ len;</span>
<span class="line" id="L55"> <span class="tok-kw">var</span> k1: <span class="tok-type">u32</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L56"> k1 = v *% m;</span>
<span class="line" id="L57"> k1 ^= k1 >> <span class="tok-number">24</span>;</span>
<span class="line" id="L58"> k1 *%= m;</span>
<span class="line" id="L59"> h1 *%= m;</span>
<span class="line" id="L60"> h1 ^= k1;</span>
<span class="line" id="L61"> h1 ^= h1 >> <span class="tok-number">13</span>;</span>
<span class="line" id="L62"> h1 *%= m;</span>
<span class="line" id="L63"> h1 ^= h1 >> <span class="tok-number">15</span>;</span>
<span class="line" id="L64"> <span class="tok-kw">return</span> h1;</span>
<span class="line" id="L65"> }</span>
<span class="line" id="L66"></span>
<span class="line" id="L67"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashUint64</span>(v: <span class="tok-type">u64</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L68"> <span class="tok-kw">return</span> <span class="tok-builtin">@call</span>(.always_inline, Self.hashUint64WithSeed, .{ v, default_seed });</span>
<span class="line" id="L69"> }</span>
<span class="line" id="L70"></span>
<span class="line" id="L71"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashUint64WithSeed</span>(v: <span class="tok-type">u64</span>, seed: <span class="tok-type">u32</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L72"> <span class="tok-kw">const</span> m: <span class="tok-type">u32</span> = <span class="tok-number">0x5bd1e995</span>;</span>
<span class="line" id="L73"> <span class="tok-kw">const</span> len: <span class="tok-type">u32</span> = <span class="tok-number">8</span>;</span>
<span class="line" id="L74"> <span class="tok-kw">var</span> h1: <span class="tok-type">u32</span> = seed ^ len;</span>
<span class="line" id="L75"> <span class="tok-kw">var</span> k1: <span class="tok-type">u32</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L76"> k1 = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>(v)) *% m;</span>
<span class="line" id="L77"> k1 ^= k1 >> <span class="tok-number">24</span>;</span>
<span class="line" id="L78"> k1 *%= m;</span>
<span class="line" id="L79"> h1 *%= m;</span>
<span class="line" id="L80"> h1 ^= k1;</span>
<span class="line" id="L81"> k1 = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>(v >> <span class="tok-number">32</span>)) *% m;</span>
<span class="line" id="L82"> k1 ^= k1 >> <span class="tok-number">24</span>;</span>
<span class="line" id="L83"> k1 *%= m;</span>
<span class="line" id="L84"> h1 *%= m;</span>
<span class="line" id="L85"> h1 ^= k1;</span>
<span class="line" id="L86"> h1 ^= h1 >> <span class="tok-number">13</span>;</span>
<span class="line" id="L87"> h1 *%= m;</span>
<span class="line" id="L88"> h1 ^= h1 >> <span class="tok-number">15</span>;</span>
<span class="line" id="L89"> <span class="tok-kw">return</span> h1;</span>
<span class="line" id="L90"> }</span>
<span class="line" id="L91">};</span>
<span class="line" id="L92"></span>
<span class="line" id="L93"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Murmur2_64 = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L94"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L95"></span>
<span class="line" id="L96"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hash</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L97"> <span class="tok-kw">return</span> <span class="tok-builtin">@call</span>(.always_inline, Self.hashWithSeed, .{ str, default_seed });</span>
<span class="line" id="L98"> }</span>
<span class="line" id="L99"></span>
<span class="line" id="L100"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashWithSeed</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, seed: <span class="tok-type">u64</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L101"> <span class="tok-kw">const</span> m: <span class="tok-type">u64</span> = <span class="tok-number">0xc6a4a7935bd1e995</span>;</span>
<span class="line" id="L102"> <span class="tok-kw">var</span> h1: <span class="tok-type">u64</span> = seed ^ (<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, str.len) *% m);</span>
<span class="line" id="L103"> <span class="tok-kw">for</span> (<span class="tok-builtin">@as</span>([*]<span class="tok-kw">align</span>(<span class="tok-number">1</span>) <span class="tok-kw">const</span> <span class="tok-type">u64</span>, <span class="tok-builtin">@ptrCast</span>(str.ptr))[<span class="tok-number">0</span> .. str.len / <span class="tok-number">8</span>]) |v| {</span>
<span class="line" id="L104"> <span class="tok-kw">var</span> k1: <span class="tok-type">u64</span> = v;</span>
<span class="line" id="L105"> <span class="tok-kw">if</span> (native_endian == .Big)</span>
<span class="line" id="L106"> k1 = <span class="tok-builtin">@byteSwap</span>(k1);</span>
<span class="line" id="L107"> k1 *%= m;</span>
<span class="line" id="L108"> k1 ^= k1 >> <span class="tok-number">47</span>;</span>
<span class="line" id="L109"> k1 *%= m;</span>
<span class="line" id="L110"> h1 ^= k1;</span>
<span class="line" id="L111"> h1 *%= m;</span>
<span class="line" id="L112"> }</span>
<span class="line" id="L113"> <span class="tok-kw">const</span> rest = str.len & <span class="tok-number">7</span>;</span>
<span class="line" id="L114"> <span class="tok-kw">const</span> offset = str.len - rest;</span>
<span class="line" id="L115"> <span class="tok-kw">if</span> (rest > <span class="tok-number">0</span>) {</span>
<span class="line" id="L116"> <span class="tok-kw">var</span> k1: <span class="tok-type">u64</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L117"> <span class="tok-builtin">@memcpy</span>(<span class="tok-builtin">@as</span>([*]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&k1))[<span class="tok-number">0</span>..rest], str[offset..]);</span>
<span class="line" id="L118"> <span class="tok-kw">if</span> (native_endian == .Big)</span>
<span class="line" id="L119"> k1 = <span class="tok-builtin">@byteSwap</span>(k1);</span>
<span class="line" id="L120"> h1 ^= k1;</span>
<span class="line" id="L121"> h1 *%= m;</span>
<span class="line" id="L122"> }</span>
<span class="line" id="L123"> h1 ^= h1 >> <span class="tok-number">47</span>;</span>
<span class="line" id="L124"> h1 *%= m;</span>
<span class="line" id="L125"> h1 ^= h1 >> <span class="tok-number">47</span>;</span>
<span class="line" id="L126"> <span class="tok-kw">return</span> h1;</span>
<span class="line" id="L127"> }</span>
<span class="line" id="L128"></span>
<span class="line" id="L129"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashUint32</span>(v: <span class="tok-type">u32</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L130"> <span class="tok-kw">return</span> <span class="tok-builtin">@call</span>(.always_inline, Self.hashUint32WithSeed, .{ v, default_seed });</span>
<span class="line" id="L131"> }</span>
<span class="line" id="L132"></span>
<span class="line" id="L133"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashUint32WithSeed</span>(v: <span class="tok-type">u32</span>, seed: <span class="tok-type">u64</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L134"> <span class="tok-kw">const</span> m: <span class="tok-type">u64</span> = <span class="tok-number">0xc6a4a7935bd1e995</span>;</span>
<span class="line" id="L135"> <span class="tok-kw">const</span> len: <span class="tok-type">u64</span> = <span class="tok-number">4</span>;</span>
<span class="line" id="L136"> <span class="tok-kw">var</span> h1: <span class="tok-type">u64</span> = seed ^ (len *% m);</span>
<span class="line" id="L137"> <span class="tok-kw">var</span> k1: <span class="tok-type">u64</span> = v;</span>
<span class="line" id="L138"> h1 ^= k1;</span>
<span class="line" id="L139"> h1 *%= m;</span>
<span class="line" id="L140"> h1 ^= h1 >> <span class="tok-number">47</span>;</span>
<span class="line" id="L141"> h1 *%= m;</span>
<span class="line" id="L142"> h1 ^= h1 >> <span class="tok-number">47</span>;</span>
<span class="line" id="L143"> <span class="tok-kw">return</span> h1;</span>
<span class="line" id="L144"> }</span>
<span class="line" id="L145"></span>
<span class="line" id="L146"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashUint64</span>(v: <span class="tok-type">u64</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L147"> <span class="tok-kw">return</span> <span class="tok-builtin">@call</span>(.always_inline, Self.hashUint64WithSeed, .{ v, default_seed });</span>
<span class="line" id="L148"> }</span>
<span class="line" id="L149"></span>
<span class="line" id="L150"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashUint64WithSeed</span>(v: <span class="tok-type">u64</span>, seed: <span class="tok-type">u64</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L151"> <span class="tok-kw">const</span> m: <span class="tok-type">u64</span> = <span class="tok-number">0xc6a4a7935bd1e995</span>;</span>
<span class="line" id="L152"> <span class="tok-kw">const</span> len: <span class="tok-type">u64</span> = <span class="tok-number">8</span>;</span>
<span class="line" id="L153"> <span class="tok-kw">var</span> h1: <span class="tok-type">u64</span> = seed ^ (len *% m);</span>
<span class="line" id="L154"> <span class="tok-kw">var</span> k1: <span class="tok-type">u64</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L155"> k1 = v *% m;</span>
<span class="line" id="L156"> k1 ^= k1 >> <span class="tok-number">47</span>;</span>
<span class="line" id="L157"> k1 *%= m;</span>
<span class="line" id="L158"> h1 ^= k1;</span>
<span class="line" id="L159"> h1 *%= m;</span>
<span class="line" id="L160"> h1 ^= h1 >> <span class="tok-number">47</span>;</span>
<span class="line" id="L161"> h1 *%= m;</span>
<span class="line" id="L162"> h1 ^= h1 >> <span class="tok-number">47</span>;</span>
<span class="line" id="L163"> <span class="tok-kw">return</span> h1;</span>
<span class="line" id="L164"> }</span>
<span class="line" id="L165">};</span>
<span class="line" id="L166"></span>
<span class="line" id="L167"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Murmur3_32 = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L168"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L169"></span>
<span class="line" id="L170"> <span class="tok-kw">fn</span> <span class="tok-fn">rotl32</span>(x: <span class="tok-type">u32</span>, <span class="tok-kw">comptime</span> r: <span class="tok-type">u32</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L171"> <span class="tok-kw">return</span> (x << r) | (x >> (<span class="tok-number">32</span> - r));</span>
<span class="line" id="L172"> }</span>
<span class="line" id="L173"></span>
<span class="line" id="L174"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hash</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L175"> <span class="tok-kw">return</span> <span class="tok-builtin">@call</span>(.always_inline, Self.hashWithSeed, .{ str, default_seed });</span>
<span class="line" id="L176"> }</span>
<span class="line" id="L177"></span>
<span class="line" id="L178"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashWithSeed</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, seed: <span class="tok-type">u32</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L179"> <span class="tok-kw">const</span> c1: <span class="tok-type">u32</span> = <span class="tok-number">0xcc9e2d51</span>;</span>
<span class="line" id="L180"> <span class="tok-kw">const</span> c2: <span class="tok-type">u32</span> = <span class="tok-number">0x1b873593</span>;</span>
<span class="line" id="L181"> <span class="tok-kw">const</span> len = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>(str.len));</span>
<span class="line" id="L182"> <span class="tok-kw">var</span> h1: <span class="tok-type">u32</span> = seed;</span>
<span class="line" id="L183"> <span class="tok-kw">for</span> (<span class="tok-builtin">@as</span>([*]<span class="tok-kw">align</span>(<span class="tok-number">1</span>) <span class="tok-kw">const</span> <span class="tok-type">u32</span>, <span class="tok-builtin">@ptrCast</span>(str.ptr))[<span class="tok-number">0</span>..(len >> <span class="tok-number">2</span>)]) |v| {</span>
<span class="line" id="L184"> <span class="tok-kw">var</span> k1: <span class="tok-type">u32</span> = v;</span>
<span class="line" id="L185"> <span class="tok-kw">if</span> (native_endian == .Big)</span>
<span class="line" id="L186"> k1 = <span class="tok-builtin">@byteSwap</span>(k1);</span>
<span class="line" id="L187"> k1 *%= c1;</span>
<span class="line" id="L188"> k1 = rotl32(k1, <span class="tok-number">15</span>);</span>
<span class="line" id="L189"> k1 *%= c2;</span>
<span class="line" id="L190"> h1 ^= k1;</span>
<span class="line" id="L191"> h1 = rotl32(h1, <span class="tok-number">13</span>);</span>
<span class="line" id="L192"> h1 *%= <span class="tok-number">5</span>;</span>
<span class="line" id="L193"> h1 +%= <span class="tok-number">0xe6546b64</span>;</span>
<span class="line" id="L194"> }</span>
<span class="line" id="L195"> {</span>
<span class="line" id="L196"> <span class="tok-kw">var</span> k1: <span class="tok-type">u32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L197"> <span class="tok-kw">const</span> offset = len & <span class="tok-number">0xfffffffc</span>;</span>
<span class="line" id="L198"> <span class="tok-kw">const</span> rest = len & <span class="tok-number">3</span>;</span>
<span class="line" id="L199"> <span class="tok-kw">if</span> (rest == <span class="tok-number">3</span>) {</span>
<span class="line" id="L200"> k1 ^= <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(str[offset + <span class="tok-number">2</span>])) << <span class="tok-number">16</span>;</span>
<span class="line" id="L201"> }</span>
<span class="line" id="L202"> <span class="tok-kw">if</span> (rest >= <span class="tok-number">2</span>) {</span>
<span class="line" id="L203"> k1 ^= <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(str[offset + <span class="tok-number">1</span>])) << <span class="tok-number">8</span>;</span>
<span class="line" id="L204"> }</span>
<span class="line" id="L205"> <span class="tok-kw">if</span> (rest >= <span class="tok-number">1</span>) {</span>
<span class="line" id="L206"> k1 ^= <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(str[offset + <span class="tok-number">0</span>]));</span>
<span class="line" id="L207"> k1 *%= c1;</span>
<span class="line" id="L208"> k1 = rotl32(k1, <span class="tok-number">15</span>);</span>
<span class="line" id="L209"> k1 *%= c2;</span>
<span class="line" id="L210"> h1 ^= k1;</span>
<span class="line" id="L211"> }</span>
<span class="line" id="L212"> }</span>
<span class="line" id="L213"> h1 ^= len;</span>
<span class="line" id="L214"> h1 ^= h1 >> <span class="tok-number">16</span>;</span>
<span class="line" id="L215"> h1 *%= <span class="tok-number">0x85ebca6b</span>;</span>
<span class="line" id="L216"> h1 ^= h1 >> <span class="tok-number">13</span>;</span>
<span class="line" id="L217"> h1 *%= <span class="tok-number">0xc2b2ae35</span>;</span>
<span class="line" id="L218"> h1 ^= h1 >> <span class="tok-number">16</span>;</span>
<span class="line" id="L219"> <span class="tok-kw">return</span> h1;</span>
<span class="line" id="L220"> }</span>
<span class="line" id="L221"></span>
<span class="line" id="L222"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashUint32</span>(v: <span class="tok-type">u32</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L223"> <span class="tok-kw">return</span> <span class="tok-builtin">@call</span>(.always_inline, Self.hashUint32WithSeed, .{ v, default_seed });</span>
<span class="line" id="L224"> }</span>
<span class="line" id="L225"></span>
<span class="line" id="L226"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashUint32WithSeed</span>(v: <span class="tok-type">u32</span>, seed: <span class="tok-type">u32</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L227"> <span class="tok-kw">const</span> c1: <span class="tok-type">u32</span> = <span class="tok-number">0xcc9e2d51</span>;</span>
<span class="line" id="L228"> <span class="tok-kw">const</span> c2: <span class="tok-type">u32</span> = <span class="tok-number">0x1b873593</span>;</span>
<span class="line" id="L229"> <span class="tok-kw">const</span> len: <span class="tok-type">u32</span> = <span class="tok-number">4</span>;</span>
<span class="line" id="L230"> <span class="tok-kw">var</span> h1: <span class="tok-type">u32</span> = seed;</span>
<span class="line" id="L231"> <span class="tok-kw">var</span> k1: <span class="tok-type">u32</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L232"> k1 = v *% c1;</span>
<span class="line" id="L233"> k1 = rotl32(k1, <span class="tok-number">15</span>);</span>
<span class="line" id="L234"> k1 *%= c2;</span>
<span class="line" id="L235"> h1 ^= k1;</span>
<span class="line" id="L236"> h1 = rotl32(h1, <span class="tok-number">13</span>);</span>
<span class="line" id="L237"> h1 *%= <span class="tok-number">5</span>;</span>
<span class="line" id="L238"> h1 +%= <span class="tok-number">0xe6546b64</span>;</span>
<span class="line" id="L239"> h1 ^= len;</span>
<span class="line" id="L240"> h1 ^= h1 >> <span class="tok-number">16</span>;</span>
<span class="line" id="L241"> h1 *%= <span class="tok-number">0x85ebca6b</span>;</span>
<span class="line" id="L242"> h1 ^= h1 >> <span class="tok-number">13</span>;</span>
<span class="line" id="L243"> h1 *%= <span class="tok-number">0xc2b2ae35</span>;</span>
<span class="line" id="L244"> h1 ^= h1 >> <span class="tok-number">16</span>;</span>
<span class="line" id="L245"> <span class="tok-kw">return</span> h1;</span>
<span class="line" id="L246"> }</span>
<span class="line" id="L247"></span>
<span class="line" id="L248"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashUint64</span>(v: <span class="tok-type">u64</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L249"> <span class="tok-kw">return</span> <span class="tok-builtin">@call</span>(.always_inline, Self.hashUint64WithSeed, .{ v, default_seed });</span>
<span class="line" id="L250"> }</span>
<span class="line" id="L251"></span>
<span class="line" id="L252"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashUint64WithSeed</span>(v: <span class="tok-type">u64</span>, seed: <span class="tok-type">u32</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L253"> <span class="tok-kw">const</span> c1: <span class="tok-type">u32</span> = <span class="tok-number">0xcc9e2d51</span>;</span>
<span class="line" id="L254"> <span class="tok-kw">const</span> c2: <span class="tok-type">u32</span> = <span class="tok-number">0x1b873593</span>;</span>
<span class="line" id="L255"> <span class="tok-kw">const</span> len: <span class="tok-type">u32</span> = <span class="tok-number">8</span>;</span>
<span class="line" id="L256"> <span class="tok-kw">var</span> h1: <span class="tok-type">u32</span> = seed;</span>
<span class="line" id="L257"> <span class="tok-kw">var</span> k1: <span class="tok-type">u32</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L258"> k1 = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>(v)) *% c1;</span>
<span class="line" id="L259"> k1 = rotl32(k1, <span class="tok-number">15</span>);</span>
<span class="line" id="L260"> k1 *%= c2;</span>
<span class="line" id="L261"> h1 ^= k1;</span>
<span class="line" id="L262"> h1 = rotl32(h1, <span class="tok-number">13</span>);</span>
<span class="line" id="L263"> h1 *%= <span class="tok-number">5</span>;</span>
<span class="line" id="L264"> h1 +%= <span class="tok-number">0xe6546b64</span>;</span>
<span class="line" id="L265"> k1 = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>(v >> <span class="tok-number">32</span>)) *% c1;</span>
<span class="line" id="L266"> k1 = rotl32(k1, <span class="tok-number">15</span>);</span>
<span class="line" id="L267"> k1 *%= c2;</span>
<span class="line" id="L268"> h1 ^= k1;</span>
<span class="line" id="L269"> h1 = rotl32(h1, <span class="tok-number">13</span>);</span>
<span class="line" id="L270"> h1 *%= <span class="tok-number">5</span>;</span>
<span class="line" id="L271"> h1 +%= <span class="tok-number">0xe6546b64</span>;</span>
<span class="line" id="L272"> h1 ^= len;</span>
<span class="line" id="L273"> h1 ^= h1 >> <span class="tok-number">16</span>;</span>
<span class="line" id="L274"> h1 *%= <span class="tok-number">0x85ebca6b</span>;</span>
<span class="line" id="L275"> h1 ^= h1 >> <span class="tok-number">13</span>;</span>
<span class="line" id="L276"> h1 *%= <span class="tok-number">0xc2b2ae35</span>;</span>
<span class="line" id="L277"> h1 ^= h1 >> <span class="tok-number">16</span>;</span>
<span class="line" id="L278"> <span class="tok-kw">return</span> h1;</span>
<span class="line" id="L279"> }</span>
<span class="line" id="L280">};</span>
<span class="line" id="L281"></span>
<span class="line" id="L282"><span class="tok-kw">fn</span> <span class="tok-fn">SMHasherTest</span>(<span class="tok-kw">comptime</span> hash_fn: <span class="tok-kw">anytype</span>, <span class="tok-kw">comptime</span> hashbits: <span class="tok-type">u32</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L283"> <span class="tok-kw">const</span> hashbytes = hashbits / <span class="tok-number">8</span>;</span>
<span class="line" id="L284"> <span class="tok-kw">var</span> key: [<span class="tok-number">256</span>]<span class="tok-type">u8</span> = [<span class="tok-number">1</span>]<span class="tok-type">u8</span>{<span class="tok-number">0</span>} ** <span class="tok-number">256</span>;</span>
<span class="line" id="L285"> <span class="tok-kw">var</span> hashes: [hashbytes * <span class="tok-number">256</span>]<span class="tok-type">u8</span> = [<span class="tok-number">1</span>]<span class="tok-type">u8</span>{<span class="tok-number">0</span>} ** (hashbytes * <span class="tok-number">256</span>);</span>
<span class="line" id="L286"></span>
<span class="line" id="L287"> <span class="tok-kw">var</span> i: <span class="tok-type">u32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L288"> <span class="tok-kw">while</span> (i < <span class="tok-number">256</span>) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L289"> key[i] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(i));</span>
<span class="line" id="L290"></span>
<span class="line" id="L291"> <span class="tok-kw">var</span> h = hash_fn(key[<span class="tok-number">0</span>..i], <span class="tok-number">256</span> - i);</span>
<span class="line" id="L292"> <span class="tok-kw">if</span> (native_endian == .Big)</span>
<span class="line" id="L293"> h = <span class="tok-builtin">@byteSwap</span>(h);</span>
<span class="line" id="L294"> <span class="tok-builtin">@memcpy</span>(hashes[i * hashbytes ..][<span class="tok-number">0</span>..hashbytes], <span class="tok-builtin">@as</span>([*]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&h)));</span>
<span class="line" id="L295"> }</span>
<span class="line" id="L296"></span>
<span class="line" id="L297"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>(hash_fn(&hashes, <span class="tok-number">0</span>)));</span>
<span class="line" id="L298">}</span>
<span class="line" id="L299"></span>
<span class="line" id="L300"><span class="tok-kw">test</span> <span class="tok-str">"murmur2_32"</span> {</span>
<span class="line" id="L301"> <span class="tok-kw">try</span> testing.expectEqual(SMHasherTest(Murmur2_32.hashWithSeed, <span class="tok-number">32</span>), <span class="tok-number">0x27864C1E</span>);</span>
<span class="line" id="L302"> <span class="tok-kw">var</span> v0: <span class="tok-type">u32</span> = <span class="tok-number">0x12345678</span>;</span>
<span class="line" id="L303"> <span class="tok-kw">var</span> v1: <span class="tok-type">u64</span> = <span class="tok-number">0x1234567812345678</span>;</span>
<span class="line" id="L304"> <span class="tok-kw">var</span> v0le: <span class="tok-type">u32</span> = v0;</span>
<span class="line" id="L305"> <span class="tok-kw">var</span> v1le: <span class="tok-type">u64</span> = v1;</span>
<span class="line" id="L306"> <span class="tok-kw">if</span> (native_endian == .Big) {</span>
<span class="line" id="L307"> v0le = <span class="tok-builtin">@byteSwap</span>(v0le);</span>
<span class="line" id="L308"> v1le = <span class="tok-builtin">@byteSwap</span>(v1le);</span>
<span class="line" id="L309"> }</span>
<span class="line" id="L310"> <span class="tok-kw">try</span> testing.expectEqual(Murmur2_32.hash(<span class="tok-builtin">@as</span>([*]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&v0le))[<span class="tok-number">0</span>..<span class="tok-number">4</span>]), Murmur2_32.hashUint32(v0));</span>
<span class="line" id="L311"> <span class="tok-kw">try</span> testing.expectEqual(Murmur2_32.hash(<span class="tok-builtin">@as</span>([*]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&v1le))[<span class="tok-number">0</span>..<span class="tok-number">8</span>]), Murmur2_32.hashUint64(v1));</span>
<span class="line" id="L312">}</span>
<span class="line" id="L313"></span>
<span class="line" id="L314"><span class="tok-kw">test</span> <span class="tok-str">"murmur2_64"</span> {</span>
<span class="line" id="L315"> <span class="tok-kw">try</span> std.testing.expectEqual(SMHasherTest(Murmur2_64.hashWithSeed, <span class="tok-number">64</span>), <span class="tok-number">0x1F0D3804</span>);</span>
<span class="line" id="L316"> <span class="tok-kw">var</span> v0: <span class="tok-type">u32</span> = <span class="tok-number">0x12345678</span>;</span>
<span class="line" id="L317"> <span class="tok-kw">var</span> v1: <span class="tok-type">u64</span> = <span class="tok-number">0x1234567812345678</span>;</span>
<span class="line" id="L318"> <span class="tok-kw">var</span> v0le: <span class="tok-type">u32</span> = v0;</span>
<span class="line" id="L319"> <span class="tok-kw">var</span> v1le: <span class="tok-type">u64</span> = v1;</span>
<span class="line" id="L320"> <span class="tok-kw">if</span> (native_endian == .Big) {</span>
<span class="line" id="L321"> v0le = <span class="tok-builtin">@byteSwap</span>(v0le);</span>
<span class="line" id="L322"> v1le = <span class="tok-builtin">@byteSwap</span>(v1le);</span>
<span class="line" id="L323"> }</span>
<span class="line" id="L324"> <span class="tok-kw">try</span> testing.expectEqual(Murmur2_64.hash(<span class="tok-builtin">@as</span>([*]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&v0le))[<span class="tok-number">0</span>..<span class="tok-number">4</span>]), Murmur2_64.hashUint32(v0));</span>
<span class="line" id="L325"> <span class="tok-kw">try</span> testing.expectEqual(Murmur2_64.hash(<span class="tok-builtin">@as</span>([*]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&v1le))[<span class="tok-number">0</span>..<span class="tok-number">8</span>]), Murmur2_64.hashUint64(v1));</span>
<span class="line" id="L326">}</span>
<span class="line" id="L327"></span>
<span class="line" id="L328"><span class="tok-kw">test</span> <span class="tok-str">"murmur3_32"</span> {</span>
<span class="line" id="L329"> <span class="tok-kw">try</span> std.testing.expectEqual(SMHasherTest(Murmur3_32.hashWithSeed, <span class="tok-number">32</span>), <span class="tok-number">0xB0F57EE3</span>);</span>
<span class="line" id="L330"> <span class="tok-kw">var</span> v0: <span class="tok-type">u32</span> = <span class="tok-number">0x12345678</span>;</span>
<span class="line" id="L331"> <span class="tok-kw">var</span> v1: <span class="tok-type">u64</span> = <span class="tok-number">0x1234567812345678</span>;</span>
<span class="line" id="L332"> <span class="tok-kw">var</span> v0le: <span class="tok-type">u32</span> = v0;</span>
<span class="line" id="L333"> <span class="tok-kw">var</span> v1le: <span class="tok-type">u64</span> = v1;</span>
<span class="line" id="L334"> <span class="tok-kw">if</span> (native_endian == .Big) {</span>
<span class="line" id="L335"> v0le = <span class="tok-builtin">@byteSwap</span>(v0le);</span>
<span class="line" id="L336"> v1le = <span class="tok-builtin">@byteSwap</span>(v1le);</span>
<span class="line" id="L337"> }</span>
<span class="line" id="L338"> <span class="tok-kw">try</span> testing.expectEqual(Murmur3_32.hash(<span class="tok-builtin">@as</span>([*]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&v0le))[<span class="tok-number">0</span>..<span class="tok-number">4</span>]), Murmur3_32.hashUint32(v0));</span>
<span class="line" id="L339"> <span class="tok-kw">try</span> testing.expectEqual(Murmur3_32.hash(<span class="tok-builtin">@as</span>([*]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&v1le))[<span class="tok-number">0</span>..<span class="tok-number">8</span>]), Murmur3_32.hashUint64(v1));</span>
<span class="line" id="L340">}</span>
<span class="line" id="L341"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/hash/xxhash.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> expectEqual = std.testing.expectEqual;</span>
<span class="line" id="L4"></span>
<span class="line" id="L5"><span class="tok-kw">const</span> rotl = std.math.rotl;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> XxHash64 = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L8"> acc1: <span class="tok-type">u64</span>,</span>
<span class="line" id="L9"> acc2: <span class="tok-type">u64</span>,</span>
<span class="line" id="L10"> acc3: <span class="tok-type">u64</span>,</span>
<span class="line" id="L11"> acc4: <span class="tok-type">u64</span>,</span>
<span class="line" id="L12"></span>
<span class="line" id="L13"> seed: <span class="tok-type">u64</span>,</span>
<span class="line" id="L14"> buf: [<span class="tok-number">32</span>]<span class="tok-type">u8</span>,</span>
<span class="line" id="L15"> buf_len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L16"> byte_count: <span class="tok-type">usize</span>,</span>
<span class="line" id="L17"></span>
<span class="line" id="L18"> <span class="tok-kw">const</span> prime_1 = <span class="tok-number">0x9E3779B185EBCA87</span>; <span class="tok-comment">// 0b1001111000110111011110011011000110000101111010111100101010000111</span>
</span>
<span class="line" id="L19"> <span class="tok-kw">const</span> prime_2 = <span class="tok-number">0xC2B2AE3D27D4EB4F</span>; <span class="tok-comment">// 0b1100001010110010101011100011110100100111110101001110101101001111</span>
</span>
<span class="line" id="L20"> <span class="tok-kw">const</span> prime_3 = <span class="tok-number">0x165667B19E3779F9</span>; <span class="tok-comment">// 0b0001011001010110011001111011000110011110001101110111100111111001</span>
</span>
<span class="line" id="L21"> <span class="tok-kw">const</span> prime_4 = <span class="tok-number">0x85EBCA77C2B2AE63</span>; <span class="tok-comment">// 0b1000010111101011110010100111011111000010101100101010111001100011</span>
</span>
<span class="line" id="L22"> <span class="tok-kw">const</span> prime_5 = <span class="tok-number">0x27D4EB2F165667C5</span>; <span class="tok-comment">// 0b0010011111010100111010110010111100010110010101100110011111000101</span>
</span>
<span class="line" id="L23"></span>
<span class="line" id="L24"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(seed: <span class="tok-type">u64</span>) XxHash64 {</span>
<span class="line" id="L25"> <span class="tok-kw">return</span> XxHash64{</span>
<span class="line" id="L26"> .seed = seed,</span>
<span class="line" id="L27"> .acc1 = seed +% prime_1 +% prime_2,</span>
<span class="line" id="L28"> .acc2 = seed +% prime_2,</span>
<span class="line" id="L29"> .acc3 = seed,</span>
<span class="line" id="L30"> .acc4 = seed -% prime_1,</span>
<span class="line" id="L31"> .buf = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L32"> .buf_len = <span class="tok-number">0</span>,</span>
<span class="line" id="L33"> .byte_count = <span class="tok-number">0</span>,</span>
<span class="line" id="L34"> };</span>
<span class="line" id="L35"> }</span>
<span class="line" id="L36"></span>
<span class="line" id="L37"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">update</span>(self: *XxHash64, input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L38"> <span class="tok-kw">if</span> (input.len < <span class="tok-number">32</span> - self.buf_len) {</span>
<span class="line" id="L39"> <span class="tok-builtin">@memcpy</span>(self.buf[self.buf_len..][<span class="tok-number">0</span>..input.len], input);</span>
<span class="line" id="L40"> self.buf_len += input.len;</span>
<span class="line" id="L41"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L42"> }</span>
<span class="line" id="L43"></span>
<span class="line" id="L44"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L45"></span>
<span class="line" id="L46"> <span class="tok-kw">if</span> (self.buf_len > <span class="tok-number">0</span>) {</span>
<span class="line" id="L47"> i = <span class="tok-number">32</span> - self.buf_len;</span>
<span class="line" id="L48"> <span class="tok-builtin">@memcpy</span>(self.buf[self.buf_len..][<span class="tok-number">0</span>..i], input[<span class="tok-number">0</span>..i]);</span>
<span class="line" id="L49"> self.processStripe(&self.buf);</span>
<span class="line" id="L50"> self.buf_len = <span class="tok-number">0</span>;</span>
<span class="line" id="L51"> }</span>
<span class="line" id="L52"></span>
<span class="line" id="L53"> <span class="tok-kw">while</span> (i + <span class="tok-number">32</span> <= input.len) : (i += <span class="tok-number">32</span>) {</span>
<span class="line" id="L54"> self.processStripe(input[i..][<span class="tok-number">0</span>..<span class="tok-number">32</span>]);</span>
<span class="line" id="L55"> }</span>
<span class="line" id="L56"></span>
<span class="line" id="L57"> <span class="tok-kw">const</span> remaining_bytes = input[i..];</span>
<span class="line" id="L58"> <span class="tok-builtin">@memcpy</span>(self.buf[<span class="tok-number">0</span>..remaining_bytes.len], remaining_bytes);</span>
<span class="line" id="L59"> self.buf_len = remaining_bytes.len;</span>
<span class="line" id="L60"> }</span>
<span class="line" id="L61"></span>
<span class="line" id="L62"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">processStripe</span>(self: *XxHash64, buf: *<span class="tok-kw">const</span> [<span class="tok-number">32</span>]<span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L63"> self.acc1 = round(self.acc1, mem.readIntLittle(<span class="tok-type">u64</span>, buf[<span class="tok-number">0</span>..<span class="tok-number">8</span>]));</span>
<span class="line" id="L64"> self.acc2 = round(self.acc2, mem.readIntLittle(<span class="tok-type">u64</span>, buf[<span class="tok-number">8</span>..<span class="tok-number">16</span>]));</span>
<span class="line" id="L65"> self.acc3 = round(self.acc3, mem.readIntLittle(<span class="tok-type">u64</span>, buf[<span class="tok-number">16</span>..<span class="tok-number">24</span>]));</span>
<span class="line" id="L66"> self.acc4 = round(self.acc4, mem.readIntLittle(<span class="tok-type">u64</span>, buf[<span class="tok-number">24</span>..<span class="tok-number">32</span>]));</span>
<span class="line" id="L67"> self.byte_count += <span class="tok-number">32</span>;</span>
<span class="line" id="L68"> }</span>
<span class="line" id="L69"></span>
<span class="line" id="L70"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">round</span>(acc: <span class="tok-type">u64</span>, lane: <span class="tok-type">u64</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L71"> <span class="tok-kw">const</span> a = acc +% (lane *% prime_2);</span>
<span class="line" id="L72"> <span class="tok-kw">const</span> b = rotl(<span class="tok-type">u64</span>, a, <span class="tok-number">31</span>);</span>
<span class="line" id="L73"> <span class="tok-kw">return</span> b *% prime_1;</span>
<span class="line" id="L74"> }</span>
<span class="line" id="L75"></span>
<span class="line" id="L76"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">final</span>(self: *XxHash64) <span class="tok-type">u64</span> {</span>
<span class="line" id="L77"> <span class="tok-kw">var</span> acc: <span class="tok-type">u64</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L78"></span>
<span class="line" id="L79"> <span class="tok-kw">if</span> (self.byte_count < <span class="tok-number">32</span>) {</span>
<span class="line" id="L80"> acc = self.seed +% prime_5;</span>
<span class="line" id="L81"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L82"> acc = rotl(<span class="tok-type">u64</span>, self.acc1, <span class="tok-number">1</span>) +% rotl(<span class="tok-type">u64</span>, self.acc2, <span class="tok-number">7</span>) +%</span>
<span class="line" id="L83"> rotl(<span class="tok-type">u64</span>, self.acc3, <span class="tok-number">12</span>) +% rotl(<span class="tok-type">u64</span>, self.acc4, <span class="tok-number">18</span>);</span>
<span class="line" id="L84"> acc = mergeAccumulator(acc, self.acc1);</span>
<span class="line" id="L85"> acc = mergeAccumulator(acc, self.acc2);</span>
<span class="line" id="L86"> acc = mergeAccumulator(acc, self.acc3);</span>
<span class="line" id="L87"> acc = mergeAccumulator(acc, self.acc4);</span>
<span class="line" id="L88"> }</span>
<span class="line" id="L89"></span>
<span class="line" id="L90"> acc = acc +% <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, self.byte_count) +% <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, self.buf_len);</span>
<span class="line" id="L91"></span>
<span class="line" id="L92"> <span class="tok-kw">var</span> pos: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L93"> <span class="tok-kw">while</span> (pos + <span class="tok-number">8</span> <= self.buf_len) : (pos += <span class="tok-number">8</span>) {</span>
<span class="line" id="L94"> <span class="tok-kw">const</span> lane = mem.readIntLittle(<span class="tok-type">u64</span>, self.buf[pos..][<span class="tok-number">0</span>..<span class="tok-number">8</span>]);</span>
<span class="line" id="L95"> acc ^= round(<span class="tok-number">0</span>, lane);</span>
<span class="line" id="L96"> acc = rotl(<span class="tok-type">u64</span>, acc, <span class="tok-number">27</span>) *% prime_1;</span>
<span class="line" id="L97"> acc +%= prime_4;</span>
<span class="line" id="L98"> }</span>
<span class="line" id="L99"></span>
<span class="line" id="L100"> <span class="tok-kw">if</span> (pos + <span class="tok-number">4</span> <= self.buf_len) {</span>
<span class="line" id="L101"> <span class="tok-kw">const</span> lane = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, mem.readIntLittle(<span class="tok-type">u32</span>, self.buf[pos..][<span class="tok-number">0</span>..<span class="tok-number">4</span>]));</span>
<span class="line" id="L102"> acc ^= lane *% prime_1;</span>
<span class="line" id="L103"> acc = rotl(<span class="tok-type">u64</span>, acc, <span class="tok-number">23</span>) *% prime_2;</span>
<span class="line" id="L104"> acc +%= prime_3;</span>
<span class="line" id="L105"> pos += <span class="tok-number">4</span>;</span>
<span class="line" id="L106"> }</span>
<span class="line" id="L107"></span>
<span class="line" id="L108"> <span class="tok-kw">while</span> (pos < self.buf_len) : (pos += <span class="tok-number">1</span>) {</span>
<span class="line" id="L109"> <span class="tok-kw">const</span> lane = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, self.buf[pos]);</span>
<span class="line" id="L110"> acc ^= lane *% prime_5;</span>
<span class="line" id="L111"> acc = rotl(<span class="tok-type">u64</span>, acc, <span class="tok-number">11</span>) *% prime_1;</span>
<span class="line" id="L112"> }</span>
<span class="line" id="L113"></span>
<span class="line" id="L114"> acc ^= acc >> <span class="tok-number">33</span>;</span>
<span class="line" id="L115"> acc *%= prime_2;</span>
<span class="line" id="L116"> acc ^= acc >> <span class="tok-number">29</span>;</span>
<span class="line" id="L117"> acc *%= prime_3;</span>
<span class="line" id="L118"> acc ^= acc >> <span class="tok-number">32</span>;</span>
<span class="line" id="L119"></span>
<span class="line" id="L120"> <span class="tok-kw">return</span> acc;</span>
<span class="line" id="L121"> }</span>
<span class="line" id="L122"></span>
<span class="line" id="L123"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">mergeAccumulator</span>(acc: <span class="tok-type">u64</span>, other: <span class="tok-type">u64</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L124"> <span class="tok-kw">const</span> a = acc ^ round(<span class="tok-number">0</span>, other);</span>
<span class="line" id="L125"> <span class="tok-kw">const</span> b = a *% prime_1;</span>
<span class="line" id="L126"> <span class="tok-kw">return</span> b +% prime_4;</span>
<span class="line" id="L127"> }</span>
<span class="line" id="L128"></span>
<span class="line" id="L129"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hash</span>(seed: <span class="tok-type">u64</span>, input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L130"> <span class="tok-kw">var</span> hasher = XxHash64.init(seed);</span>
<span class="line" id="L131"> hasher.update(input);</span>
<span class="line" id="L132"> <span class="tok-kw">return</span> hasher.final();</span>
<span class="line" id="L133"> }</span>
<span class="line" id="L134">};</span>
<span class="line" id="L135"></span>
<span class="line" id="L136"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> XxHash32 = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L137"> acc1: <span class="tok-type">u32</span>,</span>
<span class="line" id="L138"> acc2: <span class="tok-type">u32</span>,</span>
<span class="line" id="L139"> acc3: <span class="tok-type">u32</span>,</span>
<span class="line" id="L140"> acc4: <span class="tok-type">u32</span>,</span>
<span class="line" id="L141"></span>
<span class="line" id="L142"> seed: <span class="tok-type">u32</span>,</span>
<span class="line" id="L143"> buf: [<span class="tok-number">16</span>]<span class="tok-type">u8</span>,</span>
<span class="line" id="L144"> buf_len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L145"> byte_count: <span class="tok-type">usize</span>,</span>
<span class="line" id="L146"></span>
<span class="line" id="L147"> <span class="tok-kw">const</span> prime_1 = <span class="tok-number">0x9E3779B1</span>; <span class="tok-comment">// 0b10011110001101110111100110110001</span>
</span>
<span class="line" id="L148"> <span class="tok-kw">const</span> prime_2 = <span class="tok-number">0x85EBCA77</span>; <span class="tok-comment">// 0b10000101111010111100101001110111</span>
</span>
<span class="line" id="L149"> <span class="tok-kw">const</span> prime_3 = <span class="tok-number">0xC2B2AE3D</span>; <span class="tok-comment">// 0b11000010101100101010111000111101</span>
</span>
<span class="line" id="L150"> <span class="tok-kw">const</span> prime_4 = <span class="tok-number">0x27D4EB2F</span>; <span class="tok-comment">// 0b00100111110101001110101100101111</span>
</span>
<span class="line" id="L151"> <span class="tok-kw">const</span> prime_5 = <span class="tok-number">0x165667B1</span>; <span class="tok-comment">// 0b00010110010101100110011110110001</span>
</span>
<span class="line" id="L152"></span>
<span class="line" id="L153"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(seed: <span class="tok-type">u32</span>) XxHash32 {</span>
<span class="line" id="L154"> <span class="tok-kw">return</span> XxHash32{</span>
<span class="line" id="L155"> .seed = seed,</span>
<span class="line" id="L156"> .acc1 = seed +% prime_1 +% prime_2,</span>
<span class="line" id="L157"> .acc2 = seed +% prime_2,</span>
<span class="line" id="L158"> .acc3 = seed,</span>
<span class="line" id="L159"> .acc4 = seed -% prime_1,</span>
<span class="line" id="L160"> .buf = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L161"> .buf_len = <span class="tok-number">0</span>,</span>
<span class="line" id="L162"> .byte_count = <span class="tok-number">0</span>,</span>
<span class="line" id="L163"> };</span>
<span class="line" id="L164"> }</span>
<span class="line" id="L165"></span>
<span class="line" id="L166"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">update</span>(self: *XxHash32, input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L167"> <span class="tok-kw">if</span> (input.len < <span class="tok-number">16</span> - self.buf_len) {</span>
<span class="line" id="L168"> <span class="tok-builtin">@memcpy</span>(self.buf[self.buf_len..][<span class="tok-number">0</span>..input.len], input);</span>
<span class="line" id="L169"> self.buf_len += input.len;</span>
<span class="line" id="L170"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L171"> }</span>
<span class="line" id="L172"></span>
<span class="line" id="L173"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L174"></span>
<span class="line" id="L175"> <span class="tok-kw">if</span> (self.buf_len > <span class="tok-number">0</span>) {</span>
<span class="line" id="L176"> i = <span class="tok-number">16</span> - self.buf_len;</span>
<span class="line" id="L177"> <span class="tok-builtin">@memcpy</span>(self.buf[self.buf_len..][<span class="tok-number">0</span>..i], input[<span class="tok-number">0</span>..i]);</span>
<span class="line" id="L178"> self.processStripe(&self.buf);</span>
<span class="line" id="L179"> self.buf_len = <span class="tok-number">0</span>;</span>
<span class="line" id="L180"> }</span>
<span class="line" id="L181"></span>
<span class="line" id="L182"> <span class="tok-kw">while</span> (i + <span class="tok-number">16</span> <= input.len) : (i += <span class="tok-number">16</span>) {</span>
<span class="line" id="L183"> self.processStripe(input[i..][<span class="tok-number">0</span>..<span class="tok-number">16</span>]);</span>
<span class="line" id="L184"> }</span>
<span class="line" id="L185"></span>
<span class="line" id="L186"> <span class="tok-kw">const</span> remaining_bytes = input[i..];</span>
<span class="line" id="L187"> <span class="tok-builtin">@memcpy</span>(self.buf[<span class="tok-number">0</span>..remaining_bytes.len], remaining_bytes);</span>
<span class="line" id="L188"> self.buf_len = remaining_bytes.len;</span>
<span class="line" id="L189"> }</span>
<span class="line" id="L190"></span>
<span class="line" id="L191"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">processStripe</span>(self: *XxHash32, buf: *<span class="tok-kw">const</span> [<span class="tok-number">16</span>]<span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L192"> self.acc1 = round(self.acc1, mem.readIntLittle(<span class="tok-type">u32</span>, buf[<span class="tok-number">0</span>..<span class="tok-number">4</span>]));</span>
<span class="line" id="L193"> self.acc2 = round(self.acc2, mem.readIntLittle(<span class="tok-type">u32</span>, buf[<span class="tok-number">4</span>..<span class="tok-number">8</span>]));</span>
<span class="line" id="L194"> self.acc3 = round(self.acc3, mem.readIntLittle(<span class="tok-type">u32</span>, buf[<span class="tok-number">8</span>..<span class="tok-number">12</span>]));</span>
<span class="line" id="L195"> self.acc4 = round(self.acc4, mem.readIntLittle(<span class="tok-type">u32</span>, buf[<span class="tok-number">12</span>..<span class="tok-number">16</span>]));</span>
<span class="line" id="L196"> self.byte_count += <span class="tok-number">16</span>;</span>
<span class="line" id="L197"> }</span>
<span class="line" id="L198"></span>
<span class="line" id="L199"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">round</span>(acc: <span class="tok-type">u32</span>, lane: <span class="tok-type">u32</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L200"> <span class="tok-kw">const</span> a = acc +% (lane *% prime_2);</span>
<span class="line" id="L201"> <span class="tok-kw">const</span> b = rotl(<span class="tok-type">u32</span>, a, <span class="tok-number">13</span>);</span>
<span class="line" id="L202"> <span class="tok-kw">return</span> b *% prime_1;</span>
<span class="line" id="L203"> }</span>
<span class="line" id="L204"></span>
<span class="line" id="L205"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">final</span>(self: *XxHash32) <span class="tok-type">u32</span> {</span>
<span class="line" id="L206"> <span class="tok-kw">var</span> acc: <span class="tok-type">u32</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L207"></span>
<span class="line" id="L208"> <span class="tok-kw">if</span> (self.byte_count < <span class="tok-number">16</span>) {</span>
<span class="line" id="L209"> acc = self.seed +% prime_5;</span>
<span class="line" id="L210"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L211"> acc = rotl(<span class="tok-type">u32</span>, self.acc1, <span class="tok-number">1</span>) +% rotl(<span class="tok-type">u32</span>, self.acc2, <span class="tok-number">7</span>) +%</span>
<span class="line" id="L212"> rotl(<span class="tok-type">u32</span>, self.acc3, <span class="tok-number">12</span>) +% rotl(<span class="tok-type">u32</span>, self.acc4, <span class="tok-number">18</span>);</span>
<span class="line" id="L213"> }</span>
<span class="line" id="L214"></span>
<span class="line" id="L215"> acc = acc +% <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(self.byte_count)) +% <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(self.buf_len));</span>
<span class="line" id="L216"></span>
<span class="line" id="L217"> <span class="tok-kw">var</span> pos: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L218"> <span class="tok-kw">while</span> (pos + <span class="tok-number">4</span> <= self.buf_len) : (pos += <span class="tok-number">4</span>) {</span>
<span class="line" id="L219"> <span class="tok-kw">const</span> lane = mem.readIntLittle(<span class="tok-type">u32</span>, self.buf[pos..][<span class="tok-number">0</span>..<span class="tok-number">4</span>]);</span>
<span class="line" id="L220"> acc +%= lane *% prime_3;</span>
<span class="line" id="L221"> acc = rotl(<span class="tok-type">u32</span>, acc, <span class="tok-number">17</span>) *% prime_4;</span>
<span class="line" id="L222"> }</span>
<span class="line" id="L223"></span>
<span class="line" id="L224"> <span class="tok-kw">while</span> (pos < self.buf_len) : (pos += <span class="tok-number">1</span>) {</span>
<span class="line" id="L225"> <span class="tok-kw">const</span> lane = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, self.buf[pos]);</span>
<span class="line" id="L226"> acc +%= lane *% prime_5;</span>
<span class="line" id="L227"> acc = rotl(<span class="tok-type">u32</span>, acc, <span class="tok-number">11</span>) *% prime_1;</span>
<span class="line" id="L228"> }</span>
<span class="line" id="L229"></span>
<span class="line" id="L230"> acc ^= acc >> <span class="tok-number">15</span>;</span>
<span class="line" id="L231"> acc *%= prime_2;</span>
<span class="line" id="L232"> acc ^= acc >> <span class="tok-number">13</span>;</span>
<span class="line" id="L233"> acc *%= prime_3;</span>
<span class="line" id="L234"> acc ^= acc >> <span class="tok-number">16</span>;</span>
<span class="line" id="L235"></span>
<span class="line" id="L236"> <span class="tok-kw">return</span> acc;</span>
<span class="line" id="L237"> }</span>
<span class="line" id="L238"></span>
<span class="line" id="L239"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hash</span>(seed: <span class="tok-type">u32</span>, input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L240"> <span class="tok-kw">var</span> hasher = XxHash32.init(seed);</span>
<span class="line" id="L241"> hasher.update(input);</span>
<span class="line" id="L242"> <span class="tok-kw">return</span> hasher.final();</span>
<span class="line" id="L243"> }</span>
<span class="line" id="L244">};</span>
<span class="line" id="L245"></span>
<span class="line" id="L246"><span class="tok-kw">test</span> <span class="tok-str">"xxhash64"</span> {</span>
<span class="line" id="L247"> <span class="tok-kw">const</span> hash = XxHash64.hash;</span>
<span class="line" id="L248"></span>
<span class="line" id="L249"> <span class="tok-kw">try</span> expectEqual(hash(<span class="tok-number">0</span>, <span class="tok-str">""</span>), <span class="tok-number">0xef46db3751d8e999</span>);</span>
<span class="line" id="L250"> <span class="tok-kw">try</span> expectEqual(hash(<span class="tok-number">0</span>, <span class="tok-str">"a"</span>), <span class="tok-number">0xd24ec4f1a98c6e5b</span>);</span>
<span class="line" id="L251"> <span class="tok-kw">try</span> expectEqual(hash(<span class="tok-number">0</span>, <span class="tok-str">"abc"</span>), <span class="tok-number">0x44bc2cf5ad770999</span>);</span>
<span class="line" id="L252"> <span class="tok-kw">try</span> expectEqual(hash(<span class="tok-number">0</span>, <span class="tok-str">"message digest"</span>), <span class="tok-number">0x066ed728fceeb3be</span>);</span>
<span class="line" id="L253"> <span class="tok-kw">try</span> expectEqual(hash(<span class="tok-number">0</span>, <span class="tok-str">"abcdefghijklmnopqrstuvwxyz"</span>), <span class="tok-number">0xcfe1f278fa89835c</span>);</span>
<span class="line" id="L254"> <span class="tok-kw">try</span> expectEqual(hash(<span class="tok-number">0</span>, <span class="tok-str">"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"</span>), <span class="tok-number">0xaaa46907d3047814</span>);</span>
<span class="line" id="L255"> <span class="tok-kw">try</span> expectEqual(hash(<span class="tok-number">0</span>, <span class="tok-str">"12345678901234567890123456789012345678901234567890123456789012345678901234567890"</span>), <span class="tok-number">0xe04a477f19ee145d</span>);</span>
<span class="line" id="L256">}</span>
<span class="line" id="L257"></span>
<span class="line" id="L258"><span class="tok-kw">test</span> <span class="tok-str">"xxhash32"</span> {</span>
<span class="line" id="L259"> <span class="tok-kw">const</span> hash = XxHash32.hash;</span>
<span class="line" id="L260"></span>
<span class="line" id="L261"> <span class="tok-kw">try</span> expectEqual(hash(<span class="tok-number">0</span>, <span class="tok-str">""</span>), <span class="tok-number">0x02cc5d05</span>);</span>
<span class="line" id="L262"> <span class="tok-kw">try</span> expectEqual(hash(<span class="tok-number">0</span>, <span class="tok-str">"a"</span>), <span class="tok-number">0x550d7456</span>);</span>
<span class="line" id="L263"> <span class="tok-kw">try</span> expectEqual(hash(<span class="tok-number">0</span>, <span class="tok-str">"abc"</span>), <span class="tok-number">0x32d153ff</span>);</span>
<span class="line" id="L264"> <span class="tok-kw">try</span> expectEqual(hash(<span class="tok-number">0</span>, <span class="tok-str">"message digest"</span>), <span class="tok-number">0x7c948494</span>);</span>
<span class="line" id="L265"> <span class="tok-kw">try</span> expectEqual(hash(<span class="tok-number">0</span>, <span class="tok-str">"abcdefghijklmnopqrstuvwxyz"</span>), <span class="tok-number">0x63a14d5f</span>);</span>
<span class="line" id="L266"> <span class="tok-kw">try</span> expectEqual(hash(<span class="tok-number">0</span>, <span class="tok-str">"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"</span>), <span class="tok-number">0x9c285e64</span>);</span>
<span class="line" id="L267"> <span class="tok-kw">try</span> expectEqual(hash(<span class="tok-number">0</span>, <span class="tok-str">"12345678901234567890123456789012345678901234567890123456789012345678901234567890"</span>), <span class="tok-number">0x9c05f475</span>);</span>
<span class="line" id="L268">}</span>
<span class="line" id="L269"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">// Adler32 checksum.</span>
</span>
<span class="line" id="L2"><span class="tok-comment">//</span>
</span>
<span class="line" id="L3"><span class="tok-comment">// https://tools.ietf.org/html/rfc1950#section-9</span>
</span>
<span class="line" id="L4"><span class="tok-comment">// https://github.com/madler/zlib/blob/master/adler32.c</span>
</span>
<span class="line" id="L5"></span>
<span class="line" id="L6"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L7"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L8"></span>
<span class="line" id="L9"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Adler32 = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L10"> <span class="tok-kw">const</span> base = <span class="tok-number">65521</span>;</span>
<span class="line" id="L11"> <span class="tok-kw">const</span> nmax = <span class="tok-number">5552</span>;</span>
<span class="line" id="L12"></span>
<span class="line" id="L13"> adler: <span class="tok-type">u32</span>,</span>
<span class="line" id="L14"></span>
<span class="line" id="L15"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>() Adler32 {</span>
<span class="line" id="L16"> <span class="tok-kw">return</span> Adler32{ .adler = <span class="tok-number">1</span> };</span>
<span class="line" id="L17"> }</span>
<span class="line" id="L18"></span>
<span class="line" id="L19"> <span class="tok-comment">// This fast variant is taken from zlib. It reduces the required modulos and unrolls longer</span>
</span>
<span class="line" id="L20"> <span class="tok-comment">// buffer inputs and should be much quicker.</span>
</span>
<span class="line" id="L21"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">update</span>(self: *Adler32, input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L22"> <span class="tok-kw">var</span> s1 = self.adler & <span class="tok-number">0xffff</span>;</span>
<span class="line" id="L23"> <span class="tok-kw">var</span> s2 = (self.adler >> <span class="tok-number">16</span>) & <span class="tok-number">0xffff</span>;</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"> <span class="tok-kw">if</span> (input.len == <span class="tok-number">1</span>) {</span>
<span class="line" id="L26"> s1 +%= input[<span class="tok-number">0</span>];</span>
<span class="line" id="L27"> <span class="tok-kw">if</span> (s1 >= base) {</span>
<span class="line" id="L28"> s1 -= base;</span>
<span class="line" id="L29"> }</span>
<span class="line" id="L30"> s2 +%= s1;</span>
<span class="line" id="L31"> <span class="tok-kw">if</span> (s2 >= base) {</span>
<span class="line" id="L32"> s2 -= base;</span>
<span class="line" id="L33"> }</span>
<span class="line" id="L34"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (input.len < <span class="tok-number">16</span>) {</span>
<span class="line" id="L35"> <span class="tok-kw">for</span> (input) |b| {</span>
<span class="line" id="L36"> s1 +%= b;</span>
<span class="line" id="L37"> s2 +%= s1;</span>
<span class="line" id="L38"> }</span>
<span class="line" id="L39"> <span class="tok-kw">if</span> (s1 >= base) {</span>
<span class="line" id="L40"> s1 -= base;</span>
<span class="line" id="L41"> }</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"> s2 %= base;</span>
<span class="line" id="L44"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L45"> <span class="tok-kw">const</span> n = nmax / <span class="tok-number">16</span>; <span class="tok-comment">// note: 16 | nmax</span>
</span>
<span class="line" id="L46"></span>
<span class="line" id="L47"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L48"></span>
<span class="line" id="L49"> <span class="tok-kw">while</span> (i + nmax <= input.len) {</span>
<span class="line" id="L50"> <span class="tok-kw">var</span> rounds: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L51"> <span class="tok-kw">while</span> (rounds < n) : (rounds += <span class="tok-number">1</span>) {</span>
<span class="line" id="L52"> <span class="tok-kw">comptime</span> <span class="tok-kw">var</span> j: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L53"> <span class="tok-kw">inline</span> <span class="tok-kw">while</span> (j < <span class="tok-number">16</span>) : (j += <span class="tok-number">1</span>) {</span>
<span class="line" id="L54"> s1 +%= input[i + j];</span>
<span class="line" id="L55"> s2 +%= s1;</span>
<span class="line" id="L56"> }</span>
<span class="line" id="L57"> i += <span class="tok-number">16</span>;</span>
<span class="line" id="L58"> }</span>
<span class="line" id="L59"></span>
<span class="line" id="L60"> s1 %= base;</span>
<span class="line" id="L61"> s2 %= base;</span>
<span class="line" id="L62"> }</span>
<span class="line" id="L63"></span>
<span class="line" id="L64"> <span class="tok-kw">if</span> (i < input.len) {</span>
<span class="line" id="L65"> <span class="tok-kw">while</span> (i + <span class="tok-number">16</span> <= input.len) : (i += <span class="tok-number">16</span>) {</span>
<span class="line" id="L66"> <span class="tok-kw">comptime</span> <span class="tok-kw">var</span> j: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L67"> <span class="tok-kw">inline</span> <span class="tok-kw">while</span> (j < <span class="tok-number">16</span>) : (j += <span class="tok-number">1</span>) {</span>
<span class="line" id="L68"> s1 +%= input[i + j];</span>
<span class="line" id="L69"> s2 +%= s1;</span>
<span class="line" id="L70"> }</span>
<span class="line" id="L71"> }</span>
<span class="line" id="L72"> <span class="tok-kw">while</span> (i < input.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L73"> s1 +%= input[i];</span>
<span class="line" id="L74"> s2 +%= s1;</span>
<span class="line" id="L75"> }</span>
<span class="line" id="L76"></span>
<span class="line" id="L77"> s1 %= base;</span>
<span class="line" id="L78"> s2 %= base;</span>
<span class="line" id="L79"> }</span>
<span class="line" id="L80"> }</span>
<span class="line" id="L81"></span>
<span class="line" id="L82"> self.adler = s1 | (s2 << <span class="tok-number">16</span>);</span>
<span class="line" id="L83"> }</span>
<span class="line" id="L84"></span>
<span class="line" id="L85"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">final</span>(self: *Adler32) <span class="tok-type">u32</span> {</span>
<span class="line" id="L86"> <span class="tok-kw">return</span> self.adler;</span>
<span class="line" id="L87"> }</span>
<span class="line" id="L88"></span>
<span class="line" id="L89"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hash</span>(input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L90"> <span class="tok-kw">var</span> c = Adler32.init();</span>
<span class="line" id="L91"> c.update(input);</span>
<span class="line" id="L92"> <span class="tok-kw">return</span> c.final();</span>
<span class="line" id="L93"> }</span>
<span class="line" id="L94">};</span>
<span class="line" id="L95"></span>
<span class="line" id="L96"><span class="tok-kw">test</span> <span class="tok-str">"adler32 sanity"</span> {</span>
<span class="line" id="L97"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">0x620062</span>), Adler32.hash(<span class="tok-str">"a"</span>));</span>
<span class="line" id="L98"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">0xbc002ed</span>), Adler32.hash(<span class="tok-str">"example"</span>));</span>
<span class="line" id="L99">}</span>
<span class="line" id="L100"></span>
<span class="line" id="L101"><span class="tok-kw">test</span> <span class="tok-str">"adler32 long"</span> {</span>
<span class="line" id="L102"> <span class="tok-kw">const</span> long1 = [_]<span class="tok-type">u8</span>{<span class="tok-number">1</span>} ** <span class="tok-number">1024</span>;</span>
<span class="line" id="L103"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">0x06780401</span>), Adler32.hash(long1[<span class="tok-number">0</span>..]));</span>
<span class="line" id="L104"></span>
<span class="line" id="L105"> <span class="tok-kw">const</span> long2 = [_]<span class="tok-type">u8</span>{<span class="tok-number">1</span>} ** <span class="tok-number">1025</span>;</span>
<span class="line" id="L106"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">0x0a7a0402</span>), Adler32.hash(long2[<span class="tok-number">0</span>..]));</span>
<span class="line" id="L107">}</span>
<span class="line" id="L108"></span>
<span class="line" id="L109"><span class="tok-kw">test</span> <span class="tok-str">"adler32 very long"</span> {</span>
<span class="line" id="L110"> <span class="tok-kw">const</span> long = [_]<span class="tok-type">u8</span>{<span class="tok-number">1</span>} ** <span class="tok-number">5553</span>;</span>
<span class="line" id="L111"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">0x707f15b2</span>), Adler32.hash(long[<span class="tok-number">0</span>..]));</span>
<span class="line" id="L112">}</span>
<span class="line" id="L113"></span>
<span class="line" id="L114"><span class="tok-kw">test</span> <span class="tok-str">"adler32 very long with variation"</span> {</span>
<span class="line" id="L115"> <span class="tok-kw">const</span> long = <span class="tok-kw">comptime</span> blk: {</span>
<span class="line" id="L116"> <span class="tok-builtin">@setEvalBranchQuota</span>(<span class="tok-number">7000</span>);</span>
<span class="line" id="L117"> <span class="tok-kw">var</span> result: [<span class="tok-number">6000</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L118"></span>
<span class="line" id="L119"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L120"> <span class="tok-kw">while</span> (i < result.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L121"> result[i] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(i));</span>
<span class="line" id="L122"> }</span>
<span class="line" id="L123"></span>
<span class="line" id="L124"> <span class="tok-kw">break</span> :blk result;</span>
<span class="line" id="L125"> };</span>
<span class="line" id="L126"></span>
<span class="line" id="L127"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">0x5af38d6e</span>), std.hash.Adler32.hash(long[<span class="tok-number">0</span>..]));</span>
<span class="line" id="L128">}</span>
<span class="line" id="L129"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> meta = std.meta;</span>
<span class="line" id="L5"></span>
<span class="line" id="L6"><span class="tok-comment">/// Describes how pointer types should be hashed.</span></span>
<span class="line" id="L7"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> HashStrategy = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L8"> <span class="tok-comment">/// Do not follow pointers, only hash their value.</span></span>
<span class="line" id="L9"> Shallow,</span>
<span class="line" id="L10"></span>
<span class="line" id="L11"> <span class="tok-comment">/// Follow pointers, hash the pointee content.</span></span>
<span class="line" id="L12"> <span class="tok-comment">/// Only dereferences one level, ie. it is changed into .Shallow when a</span></span>
<span class="line" id="L13"> <span class="tok-comment">/// pointer type is encountered.</span></span>
<span class="line" id="L14"> Deep,</span>
<span class="line" id="L15"></span>
<span class="line" id="L16"> <span class="tok-comment">/// Follow pointers, hash the pointee content.</span></span>
<span class="line" id="L17"> <span class="tok-comment">/// Dereferences all pointers encountered.</span></span>
<span class="line" id="L18"> <span class="tok-comment">/// Assumes no cycle.</span></span>
<span class="line" id="L19"> DeepRecursive,</span>
<span class="line" id="L20">};</span>
<span class="line" id="L21"></span>
<span class="line" id="L22"><span class="tok-comment">/// Helper function to hash a pointer and mutate the strategy if needed.</span></span>
<span class="line" id="L23"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashPointer</span>(hasher: <span class="tok-kw">anytype</span>, key: <span class="tok-kw">anytype</span>, <span class="tok-kw">comptime</span> strat: HashStrategy) <span class="tok-type">void</span> {</span>
<span class="line" id="L24"> <span class="tok-kw">const</span> info = <span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(key));</span>
<span class="line" id="L25"></span>
<span class="line" id="L26"> <span class="tok-kw">switch</span> (info.Pointer.size) {</span>
<span class="line" id="L27"> .One => <span class="tok-kw">switch</span> (strat) {</span>
<span class="line" id="L28"> .Shallow => hash(hasher, <span class="tok-builtin">@intFromPtr</span>(key), .Shallow),</span>
<span class="line" id="L29"> .Deep => hash(hasher, key.*, .Shallow),</span>
<span class="line" id="L30"> .DeepRecursive => hash(hasher, key.*, .DeepRecursive),</span>
<span class="line" id="L31"> },</span>
<span class="line" id="L32"></span>
<span class="line" id="L33"> .Slice => {</span>
<span class="line" id="L34"> <span class="tok-kw">switch</span> (strat) {</span>
<span class="line" id="L35"> .Shallow => {</span>
<span class="line" id="L36"> hashPointer(hasher, key.ptr, .Shallow);</span>
<span class="line" id="L37"> },</span>
<span class="line" id="L38"> .Deep => hashArray(hasher, key, .Shallow),</span>
<span class="line" id="L39"> .DeepRecursive => hashArray(hasher, key, .DeepRecursive),</span>
<span class="line" id="L40"> }</span>
<span class="line" id="L41"> hash(hasher, key.len, .Shallow);</span>
<span class="line" id="L42"> },</span>
<span class="line" id="L43"></span>
<span class="line" id="L44"> .Many,</span>
<span class="line" id="L45"> .C,</span>
<span class="line" id="L46"> => <span class="tok-kw">switch</span> (strat) {</span>
<span class="line" id="L47"> .Shallow => hash(hasher, <span class="tok-builtin">@intFromPtr</span>(key), .Shallow),</span>
<span class="line" id="L48"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(</span>
<span class="line" id="L49"> <span class="tok-str">\\ unknown-length pointers and C pointers cannot be hashed deeply.</span></span>
<span class="line" id="L50"> <span class="tok-str">\\ Consider providing your own hash function.</span></span>
<span class="line" id="L51"> ),</span>
<span class="line" id="L52"> },</span>
<span class="line" id="L53"> }</span>
<span class="line" id="L54">}</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"><span class="tok-comment">/// Helper function to hash a set of contiguous objects, from an array or slice.</span></span>
<span class="line" id="L57"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashArray</span>(hasher: <span class="tok-kw">anytype</span>, key: <span class="tok-kw">anytype</span>, <span class="tok-kw">comptime</span> strat: HashStrategy) <span class="tok-type">void</span> {</span>
<span class="line" id="L58"> <span class="tok-kw">for</span> (key) |element| {</span>
<span class="line" id="L59"> hash(hasher, element, strat);</span>
<span class="line" id="L60"> }</span>
<span class="line" id="L61">}</span>
<span class="line" id="L62"></span>
<span class="line" id="L63"><span class="tok-comment">/// Provides generic hashing for any eligible type.</span></span>
<span class="line" id="L64"><span class="tok-comment">/// Strategy is provided to determine if pointers should be followed or not.</span></span>
<span class="line" id="L65"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hash</span>(hasher: <span class="tok-kw">anytype</span>, key: <span class="tok-kw">anytype</span>, <span class="tok-kw">comptime</span> strat: HashStrategy) <span class="tok-type">void</span> {</span>
<span class="line" id="L66"> <span class="tok-kw">const</span> Key = <span class="tok-builtin">@TypeOf</span>(key);</span>
<span class="line" id="L67"> <span class="tok-kw">const</span> Hasher = <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(hasher))) {</span>
<span class="line" id="L68"> .Pointer => |ptr| ptr.child,</span>
<span class="line" id="L69"> <span class="tok-kw">else</span> => <span class="tok-builtin">@TypeOf</span>(hasher),</span>
<span class="line" id="L70"> };</span>
<span class="line" id="L71"></span>
<span class="line" id="L72"> <span class="tok-kw">if</span> (strat == .Shallow <span class="tok-kw">and</span> <span class="tok-kw">comptime</span> meta.trait.hasUniqueRepresentation(Key)) {</span>
<span class="line" id="L73"> <span class="tok-builtin">@call</span>(.always_inline, Hasher.update, .{ hasher, mem.asBytes(&key) });</span>
<span class="line" id="L74"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L75"> }</span>
<span class="line" id="L76"></span>
<span class="line" id="L77"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(Key)) {</span>
<span class="line" id="L78"> .NoReturn,</span>
<span class="line" id="L79"> .Opaque,</span>
<span class="line" id="L80"> .Undefined,</span>
<span class="line" id="L81"> .Null,</span>
<span class="line" id="L82"> .ComptimeFloat,</span>
<span class="line" id="L83"> .ComptimeInt,</span>
<span class="line" id="L84"> .Type,</span>
<span class="line" id="L85"> .EnumLiteral,</span>
<span class="line" id="L86"> .Frame,</span>
<span class="line" id="L87"> .Float,</span>
<span class="line" id="L88"> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"unable to hash type "</span> ++ <span class="tok-builtin">@typeName</span>(Key)),</span>
<span class="line" id="L89"></span>
<span class="line" id="L90"> .Void => <span class="tok-kw">return</span>,</span>
<span class="line" id="L91"></span>
<span class="line" id="L92"> <span class="tok-comment">// Help the optimizer see that hashing an int is easy by inlining!</span>
</span>
<span class="line" id="L93"> <span class="tok-comment">// TODO Check if the situation is better after #561 is resolved.</span>
</span>
<span class="line" id="L94"> .Int => |int| <span class="tok-kw">switch</span> (int.signedness) {</span>
<span class="line" id="L95"> .signed => hash(hasher, <span class="tok-builtin">@as</span>(<span class="tok-builtin">@Type</span>(.{ .Int = .{</span>
<span class="line" id="L96"> .bits = int.bits,</span>
<span class="line" id="L97"> .signedness = .unsigned,</span>
<span class="line" id="L98"> } }), <span class="tok-builtin">@bitCast</span>(key)), strat),</span>
<span class="line" id="L99"> .unsigned => {</span>
<span class="line" id="L100"> <span class="tok-kw">if</span> (<span class="tok-kw">comptime</span> meta.trait.hasUniqueRepresentation(Key)) {</span>
<span class="line" id="L101"> <span class="tok-builtin">@call</span>(.always_inline, Hasher.update, .{ hasher, std.mem.asBytes(&key) });</span>
<span class="line" id="L102"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L103"> <span class="tok-comment">// Take only the part containing the key value, the remaining</span>
</span>
<span class="line" id="L104"> <span class="tok-comment">// bytes are undefined and must not be hashed!</span>
</span>
<span class="line" id="L105"> <span class="tok-kw">const</span> byte_size = <span class="tok-kw">comptime</span> std.math.divCeil(<span class="tok-type">comptime_int</span>, <span class="tok-builtin">@bitSizeOf</span>(Key), <span class="tok-number">8</span>) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L106"> <span class="tok-builtin">@call</span>(.always_inline, Hasher.update, .{ hasher, std.mem.asBytes(&key)[<span class="tok-number">0</span>..byte_size] });</span>
<span class="line" id="L107"> }</span>
<span class="line" id="L108"> },</span>
<span class="line" id="L109"> },</span>
<span class="line" id="L110"></span>
<span class="line" id="L111"> .Bool => hash(hasher, <span class="tok-builtin">@intFromBool</span>(key), strat),</span>
<span class="line" id="L112"> .Enum => hash(hasher, <span class="tok-builtin">@intFromEnum</span>(key), strat),</span>
<span class="line" id="L113"> .ErrorSet => hash(hasher, <span class="tok-builtin">@intFromError</span>(key), strat),</span>
<span class="line" id="L114"> .AnyFrame, .Fn => hash(hasher, <span class="tok-builtin">@intFromPtr</span>(key), strat),</span>
<span class="line" id="L115"></span>
<span class="line" id="L116"> .Pointer => <span class="tok-builtin">@call</span>(.always_inline, hashPointer, .{ hasher, key, strat }),</span>
<span class="line" id="L117"></span>
<span class="line" id="L118"> .Optional => <span class="tok-kw">if</span> (key) |k| hash(hasher, k, strat),</span>
<span class="line" id="L119"></span>
<span class="line" id="L120"> .Array => hashArray(hasher, key, strat),</span>
<span class="line" id="L121"></span>
<span class="line" id="L122"> .Vector => |info| {</span>
<span class="line" id="L123"> <span class="tok-kw">if</span> (<span class="tok-kw">comptime</span> meta.trait.hasUniqueRepresentation(Key)) {</span>
<span class="line" id="L124"> hasher.update(mem.asBytes(&key));</span>
<span class="line" id="L125"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L126"> <span class="tok-kw">comptime</span> <span class="tok-kw">var</span> i = <span class="tok-number">0</span>;</span>
<span class="line" id="L127"> <span class="tok-kw">inline</span> <span class="tok-kw">while</span> (i < info.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L128"> hash(hasher, key[i], strat);</span>
<span class="line" id="L129"> }</span>
<span class="line" id="L130"> }</span>
<span class="line" id="L131"> },</span>
<span class="line" id="L132"></span>
<span class="line" id="L133"> .Struct => |info| {</span>
<span class="line" id="L134"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (info.fields) |field| {</span>
<span class="line" id="L135"> <span class="tok-comment">// We reuse the hash of the previous field as the seed for the</span>
</span>
<span class="line" id="L136"> <span class="tok-comment">// next one so that they're dependant.</span>
</span>
<span class="line" id="L137"> hash(hasher, <span class="tok-builtin">@field</span>(key, field.name), strat);</span>
<span class="line" id="L138"> }</span>
<span class="line" id="L139"> },</span>
<span class="line" id="L140"></span>
<span class="line" id="L141"> .Union => |info| {</span>
<span class="line" id="L142"> <span class="tok-kw">if</span> (info.tag_type) |tag_type| {</span>
<span class="line" id="L143"> <span class="tok-kw">const</span> tag = meta.activeTag(key);</span>
<span class="line" id="L144"> hash(hasher, tag, strat);</span>
<span class="line" id="L145"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (info.fields) |field| {</span>
<span class="line" id="L146"> <span class="tok-kw">if</span> (<span class="tok-builtin">@field</span>(tag_type, field.name) == tag) {</span>
<span class="line" id="L147"> <span class="tok-kw">if</span> (field.<span class="tok-type">type</span> != <span class="tok-type">void</span>) {</span>
<span class="line" id="L148"> hash(hasher, <span class="tok-builtin">@field</span>(key, field.name), strat);</span>
<span class="line" id="L149"> }</span>
<span class="line" id="L150"> <span class="tok-comment">// TODO use a labelled break when it does not crash the compiler. cf #2908</span>
</span>
<span class="line" id="L151"> <span class="tok-comment">// break :blk;</span>
</span>
<span class="line" id="L152"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L153"> }</span>
<span class="line" id="L154"> }</span>
<span class="line" id="L155"> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L156"> } <span class="tok-kw">else</span> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"cannot hash untagged union type: "</span> ++ <span class="tok-builtin">@typeName</span>(Key) ++ <span class="tok-str">", provide your own hash function"</span>);</span>
<span class="line" id="L157"> },</span>
<span class="line" id="L158"></span>
<span class="line" id="L159"> .ErrorUnion => blk: {</span>
<span class="line" id="L160"> <span class="tok-kw">const</span> payload = key <span class="tok-kw">catch</span> |err| {</span>
<span class="line" id="L161"> hash(hasher, err, strat);</span>
<span class="line" id="L162"> <span class="tok-kw">break</span> :blk;</span>
<span class="line" id="L163"> };</span>
<span class="line" id="L164"> hash(hasher, payload, strat);</span>
<span class="line" id="L165"> },</span>
<span class="line" id="L166"> }</span>
<span class="line" id="L167">}</span>
<span class="line" id="L168"></span>
<span class="line" id="L169"><span class="tok-kw">fn</span> <span class="tok-fn">typeContainsSlice</span>(<span class="tok-kw">comptime</span> K: <span class="tok-type">type</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L170"> <span class="tok-kw">comptime</span> {</span>
<span class="line" id="L171"> <span class="tok-kw">if</span> (meta.trait.isSlice(K)) {</span>
<span class="line" id="L172"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L173"> }</span>
<span class="line" id="L174"> <span class="tok-kw">if</span> (meta.trait.is(.Struct)(K)) {</span>
<span class="line" id="L175"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (<span class="tok-builtin">@typeInfo</span>(K).Struct.fields) |field| {</span>
<span class="line" id="L176"> <span class="tok-kw">if</span> (typeContainsSlice(field.<span class="tok-type">type</span>)) {</span>
<span class="line" id="L177"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L178"> }</span>
<span class="line" id="L179"> }</span>
<span class="line" id="L180"> }</span>
<span class="line" id="L181"> <span class="tok-kw">if</span> (meta.trait.is(.Union)(K)) {</span>
<span class="line" id="L182"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (<span class="tok-builtin">@typeInfo</span>(K).Union.fields) |field| {</span>
<span class="line" id="L183"> <span class="tok-kw">if</span> (typeContainsSlice(field.<span class="tok-type">type</span>)) {</span>
<span class="line" id="L184"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L185"> }</span>
<span class="line" id="L186"> }</span>
<span class="line" id="L187"> }</span>
<span class="line" id="L188"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L189"> }</span>
<span class="line" id="L190">}</span>
<span class="line" id="L191"></span>
<span class="line" id="L192"><span class="tok-comment">/// Provides generic hashing for any eligible type.</span></span>
<span class="line" id="L193"><span class="tok-comment">/// Only hashes `key` itself, pointers are not followed.</span></span>
<span class="line" id="L194"><span class="tok-comment">/// Slices as well as unions and structs containing slices are rejected to avoid</span></span>
<span class="line" id="L195"><span class="tok-comment">/// ambiguity on the user's intention.</span></span>
<span class="line" id="L196"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">autoHash</span>(hasher: <span class="tok-kw">anytype</span>, key: <span class="tok-kw">anytype</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L197"> <span class="tok-kw">const</span> Key = <span class="tok-builtin">@TypeOf</span>(key);</span>
<span class="line" id="L198"> <span class="tok-kw">if</span> (<span class="tok-kw">comptime</span> typeContainsSlice(Key)) {</span>
<span class="line" id="L199"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"std.hash.autoHash does not allow slices as well as unions and structs containing slices here ("</span> ++ <span class="tok-builtin">@typeName</span>(Key) ++</span>
<span class="line" id="L200"> <span class="tok-str">") because the intent is unclear. Consider using std.hash.autoHashStrat or providing your own hash function instead."</span>);</span>
<span class="line" id="L201"> }</span>
<span class="line" id="L202"></span>
<span class="line" id="L203"> hash(hasher, key, .Shallow);</span>
<span class="line" id="L204">}</span>
<span class="line" id="L205"></span>
<span class="line" id="L206"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L207"><span class="tok-kw">const</span> Wyhash = std.hash.Wyhash;</span>
<span class="line" id="L208"></span>
<span class="line" id="L209"><span class="tok-kw">fn</span> <span class="tok-fn">testHash</span>(key: <span class="tok-kw">anytype</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L210"> <span class="tok-comment">// Any hash could be used here, for testing autoHash.</span>
</span>
<span class="line" id="L211"> <span class="tok-kw">var</span> hasher = Wyhash.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L212"> hash(&hasher, key, .Shallow);</span>
<span class="line" id="L213"> <span class="tok-kw">return</span> hasher.final();</span>
<span class="line" id="L214">}</span>
<span class="line" id="L215"></span>
<span class="line" id="L216"><span class="tok-kw">fn</span> <span class="tok-fn">testHashShallow</span>(key: <span class="tok-kw">anytype</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L217"> <span class="tok-comment">// Any hash could be used here, for testing autoHash.</span>
</span>
<span class="line" id="L218"> <span class="tok-kw">var</span> hasher = Wyhash.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L219"> hash(&hasher, key, .Shallow);</span>
<span class="line" id="L220"> <span class="tok-kw">return</span> hasher.final();</span>
<span class="line" id="L221">}</span>
<span class="line" id="L222"></span>
<span class="line" id="L223"><span class="tok-kw">fn</span> <span class="tok-fn">testHashDeep</span>(key: <span class="tok-kw">anytype</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L224"> <span class="tok-comment">// Any hash could be used here, for testing autoHash.</span>
</span>
<span class="line" id="L225"> <span class="tok-kw">var</span> hasher = Wyhash.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L226"> hash(&hasher, key, .Deep);</span>
<span class="line" id="L227"> <span class="tok-kw">return</span> hasher.final();</span>
<span class="line" id="L228">}</span>
<span class="line" id="L229"></span>
<span class="line" id="L230"><span class="tok-kw">fn</span> <span class="tok-fn">testHashDeepRecursive</span>(key: <span class="tok-kw">anytype</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L231"> <span class="tok-comment">// Any hash could be used here, for testing autoHash.</span>
</span>
<span class="line" id="L232"> <span class="tok-kw">var</span> hasher = Wyhash.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L233"> hash(&hasher, key, .DeepRecursive);</span>
<span class="line" id="L234"> <span class="tok-kw">return</span> hasher.final();</span>
<span class="line" id="L235">}</span>
<span class="line" id="L236"></span>
<span class="line" id="L237"><span class="tok-kw">test</span> <span class="tok-str">"typeContainsSlice"</span> {</span>
<span class="line" id="L238"> <span class="tok-kw">comptime</span> {</span>
<span class="line" id="L239"> <span class="tok-kw">try</span> testing.expect(!typeContainsSlice(meta.Tag(std.builtin.Type)));</span>
<span class="line" id="L240"></span>
<span class="line" id="L241"> <span class="tok-kw">try</span> testing.expect(typeContainsSlice([]<span class="tok-kw">const</span> <span class="tok-type">u8</span>));</span>
<span class="line" id="L242"> <span class="tok-kw">try</span> testing.expect(!typeContainsSlice(<span class="tok-type">u8</span>));</span>
<span class="line" id="L243"> <span class="tok-kw">const</span> A = <span class="tok-kw">struct</span> { x: []<span class="tok-kw">const</span> <span class="tok-type">u8</span> };</span>
<span class="line" id="L244"> <span class="tok-kw">const</span> B = <span class="tok-kw">struct</span> { a: A };</span>
<span class="line" id="L245"> <span class="tok-kw">const</span> C = <span class="tok-kw">struct</span> { b: B };</span>
<span class="line" id="L246"> <span class="tok-kw">const</span> D = <span class="tok-kw">struct</span> { x: <span class="tok-type">u8</span> };</span>
<span class="line" id="L247"> <span class="tok-kw">try</span> testing.expect(typeContainsSlice(A));</span>
<span class="line" id="L248"> <span class="tok-kw">try</span> testing.expect(typeContainsSlice(B));</span>
<span class="line" id="L249"> <span class="tok-kw">try</span> testing.expect(typeContainsSlice(C));</span>
<span class="line" id="L250"> <span class="tok-kw">try</span> testing.expect(!typeContainsSlice(D));</span>
<span class="line" id="L251"> }</span>
<span class="line" id="L252">}</span>
<span class="line" id="L253"></span>
<span class="line" id="L254"><span class="tok-kw">test</span> <span class="tok-str">"hash pointer"</span> {</span>
<span class="line" id="L255"> <span class="tok-kw">const</span> array = [_]<span class="tok-type">u32</span>{ <span class="tok-number">123</span>, <span class="tok-number">123</span>, <span class="tok-number">123</span> };</span>
<span class="line" id="L256"> <span class="tok-kw">const</span> a = &array[<span class="tok-number">0</span>];</span>
<span class="line" id="L257"> <span class="tok-kw">const</span> b = &array[<span class="tok-number">1</span>];</span>
<span class="line" id="L258"> <span class="tok-kw">const</span> c = &array[<span class="tok-number">2</span>];</span>
<span class="line" id="L259"> <span class="tok-kw">const</span> d = a;</span>
<span class="line" id="L260"></span>
<span class="line" id="L261"> <span class="tok-kw">try</span> testing.expect(testHashShallow(a) == testHashShallow(d));</span>
<span class="line" id="L262"> <span class="tok-kw">try</span> testing.expect(testHashShallow(a) != testHashShallow(c));</span>
<span class="line" id="L263"> <span class="tok-kw">try</span> testing.expect(testHashShallow(a) != testHashShallow(b));</span>
<span class="line" id="L264"></span>
<span class="line" id="L265"> <span class="tok-kw">try</span> testing.expect(testHashDeep(a) == testHashDeep(a));</span>
<span class="line" id="L266"> <span class="tok-kw">try</span> testing.expect(testHashDeep(a) == testHashDeep(c));</span>
<span class="line" id="L267"> <span class="tok-kw">try</span> testing.expect(testHashDeep(a) == testHashDeep(b));</span>
<span class="line" id="L268"></span>
<span class="line" id="L269"> <span class="tok-kw">try</span> testing.expect(testHashDeepRecursive(a) == testHashDeepRecursive(a));</span>
<span class="line" id="L270"> <span class="tok-kw">try</span> testing.expect(testHashDeepRecursive(a) == testHashDeepRecursive(c));</span>
<span class="line" id="L271"> <span class="tok-kw">try</span> testing.expect(testHashDeepRecursive(a) == testHashDeepRecursive(b));</span>
<span class="line" id="L272">}</span>
<span class="line" id="L273"></span>
<span class="line" id="L274"><span class="tok-kw">test</span> <span class="tok-str">"hash slice shallow"</span> {</span>
<span class="line" id="L275"> <span class="tok-comment">// Allocate one array dynamically so that we're assured it is not merged</span>
</span>
<span class="line" id="L276"> <span class="tok-comment">// with the other by the optimization passes.</span>
</span>
<span class="line" id="L277"> <span class="tok-kw">const</span> array1 = <span class="tok-kw">try</span> std.testing.allocator.create([<span class="tok-number">6</span>]<span class="tok-type">u32</span>);</span>
<span class="line" id="L278"> <span class="tok-kw">defer</span> std.testing.allocator.destroy(array1);</span>
<span class="line" id="L279"> array1.* = [_]<span class="tok-type">u32</span>{ <span class="tok-number">1</span>, <span class="tok-number">2</span>, <span class="tok-number">3</span>, <span class="tok-number">4</span>, <span class="tok-number">5</span>, <span class="tok-number">6</span> };</span>
<span class="line" id="L280"> <span class="tok-kw">const</span> array2 = [_]<span class="tok-type">u32</span>{ <span class="tok-number">1</span>, <span class="tok-number">2</span>, <span class="tok-number">3</span>, <span class="tok-number">4</span>, <span class="tok-number">5</span>, <span class="tok-number">6</span> };</span>
<span class="line" id="L281"> <span class="tok-comment">// TODO audit deep/shallow - maybe it has the wrong behavior with respect to array pointers and slices</span>
</span>
<span class="line" id="L282"> <span class="tok-kw">var</span> runtime_zero: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L283"> <span class="tok-kw">const</span> a = array1[runtime_zero..];</span>
<span class="line" id="L284"> <span class="tok-kw">const</span> b = array2[runtime_zero..];</span>
<span class="line" id="L285"> <span class="tok-kw">const</span> c = array1[runtime_zero..<span class="tok-number">3</span>];</span>
<span class="line" id="L286"> <span class="tok-kw">try</span> testing.expect(testHashShallow(a) == testHashShallow(a));</span>
<span class="line" id="L287"> <span class="tok-kw">try</span> testing.expect(testHashShallow(a) != testHashShallow(array1));</span>
<span class="line" id="L288"> <span class="tok-kw">try</span> testing.expect(testHashShallow(a) != testHashShallow(b));</span>
<span class="line" id="L289"> <span class="tok-kw">try</span> testing.expect(testHashShallow(a) != testHashShallow(c));</span>
<span class="line" id="L290">}</span>
<span class="line" id="L291"></span>
<span class="line" id="L292"><span class="tok-kw">test</span> <span class="tok-str">"hash slice deep"</span> {</span>
<span class="line" id="L293"> <span class="tok-comment">// Allocate one array dynamically so that we're assured it is not merged</span>
</span>
<span class="line" id="L294"> <span class="tok-comment">// with the other by the optimization passes.</span>
</span>
<span class="line" id="L295"> <span class="tok-kw">const</span> array1 = <span class="tok-kw">try</span> std.testing.allocator.create([<span class="tok-number">6</span>]<span class="tok-type">u32</span>);</span>
<span class="line" id="L296"> <span class="tok-kw">defer</span> std.testing.allocator.destroy(array1);</span>
<span class="line" id="L297"> array1.* = [_]<span class="tok-type">u32</span>{ <span class="tok-number">1</span>, <span class="tok-number">2</span>, <span class="tok-number">3</span>, <span class="tok-number">4</span>, <span class="tok-number">5</span>, <span class="tok-number">6</span> };</span>
<span class="line" id="L298"> <span class="tok-kw">const</span> array2 = [_]<span class="tok-type">u32</span>{ <span class="tok-number">1</span>, <span class="tok-number">2</span>, <span class="tok-number">3</span>, <span class="tok-number">4</span>, <span class="tok-number">5</span>, <span class="tok-number">6</span> };</span>
<span class="line" id="L299"> <span class="tok-kw">const</span> a = array1[<span class="tok-number">0</span>..];</span>
<span class="line" id="L300"> <span class="tok-kw">const</span> b = array2[<span class="tok-number">0</span>..];</span>
<span class="line" id="L301"> <span class="tok-kw">const</span> c = array1[<span class="tok-number">0</span>..<span class="tok-number">3</span>];</span>
<span class="line" id="L302"> <span class="tok-kw">try</span> testing.expect(testHashDeep(a) == testHashDeep(a));</span>
<span class="line" id="L303"> <span class="tok-kw">try</span> testing.expect(testHashDeep(a) == testHashDeep(array1));</span>
<span class="line" id="L304"> <span class="tok-kw">try</span> testing.expect(testHashDeep(a) == testHashDeep(b));</span>
<span class="line" id="L305"> <span class="tok-kw">try</span> testing.expect(testHashDeep(a) != testHashDeep(c));</span>
<span class="line" id="L306">}</span>
<span class="line" id="L307"></span>
<span class="line" id="L308"><span class="tok-kw">test</span> <span class="tok-str">"hash struct deep"</span> {</span>
<span class="line" id="L309"> <span class="tok-kw">const</span> Foo = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L310"> a: <span class="tok-type">u32</span>,</span>
<span class="line" id="L311"> b: <span class="tok-type">u16</span>,</span>
<span class="line" id="L312"> c: *<span class="tok-type">bool</span>,</span>
<span class="line" id="L313"></span>
<span class="line" id="L314"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L315"></span>
<span class="line" id="L316"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(allocator: mem.Allocator, a_: <span class="tok-type">u32</span>, b_: <span class="tok-type">u16</span>, c_: <span class="tok-type">bool</span>) !Self {</span>
<span class="line" id="L317"> <span class="tok-kw">const</span> ptr = <span class="tok-kw">try</span> allocator.create(<span class="tok-type">bool</span>);</span>
<span class="line" id="L318"> ptr.* = c_;</span>
<span class="line" id="L319"> <span class="tok-kw">return</span> Self{ .a = a_, .b = b_, .c = ptr };</span>
<span class="line" id="L320"> }</span>
<span class="line" id="L321"> };</span>
<span class="line" id="L322"></span>
<span class="line" id="L323"> <span class="tok-kw">const</span> allocator = std.testing.allocator;</span>
<span class="line" id="L324"> <span class="tok-kw">const</span> foo = <span class="tok-kw">try</span> Foo.init(allocator, <span class="tok-number">123</span>, <span class="tok-number">10</span>, <span class="tok-null">true</span>);</span>
<span class="line" id="L325"> <span class="tok-kw">const</span> bar = <span class="tok-kw">try</span> Foo.init(allocator, <span class="tok-number">123</span>, <span class="tok-number">10</span>, <span class="tok-null">true</span>);</span>
<span class="line" id="L326"> <span class="tok-kw">const</span> baz = <span class="tok-kw">try</span> Foo.init(allocator, <span class="tok-number">123</span>, <span class="tok-number">10</span>, <span class="tok-null">false</span>);</span>
<span class="line" id="L327"> <span class="tok-kw">defer</span> allocator.destroy(foo.c);</span>
<span class="line" id="L328"> <span class="tok-kw">defer</span> allocator.destroy(bar.c);</span>
<span class="line" id="L329"> <span class="tok-kw">defer</span> allocator.destroy(baz.c);</span>
<span class="line" id="L330"></span>
<span class="line" id="L331"> <span class="tok-kw">try</span> testing.expect(testHashDeep(foo) == testHashDeep(bar));</span>
<span class="line" id="L332"> <span class="tok-kw">try</span> testing.expect(testHashDeep(foo) != testHashDeep(baz));</span>
<span class="line" id="L333"> <span class="tok-kw">try</span> testing.expect(testHashDeep(bar) != testHashDeep(baz));</span>
<span class="line" id="L334"></span>
<span class="line" id="L335"> <span class="tok-kw">var</span> hasher = Wyhash.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L336"> <span class="tok-kw">const</span> h = testHashDeep(foo);</span>
<span class="line" id="L337"> autoHash(&hasher, foo.a);</span>
<span class="line" id="L338"> autoHash(&hasher, foo.b);</span>
<span class="line" id="L339"> autoHash(&hasher, foo.c.*);</span>
<span class="line" id="L340"> <span class="tok-kw">try</span> testing.expectEqual(h, hasher.final());</span>
<span class="line" id="L341"></span>
<span class="line" id="L342"> <span class="tok-kw">const</span> h2 = testHashDeepRecursive(&foo);</span>
<span class="line" id="L343"> <span class="tok-kw">try</span> testing.expect(h2 != testHashDeep(&foo));</span>
<span class="line" id="L344"> <span class="tok-kw">try</span> testing.expect(h2 == testHashDeep(foo));</span>
<span class="line" id="L345">}</span>
<span class="line" id="L346"></span>
<span class="line" id="L347"><span class="tok-kw">test</span> <span class="tok-str">"testHash optional"</span> {</span>
<span class="line" id="L348"> <span class="tok-kw">const</span> a: ?<span class="tok-type">u32</span> = <span class="tok-number">123</span>;</span>
<span class="line" id="L349"> <span class="tok-kw">const</span> b: ?<span class="tok-type">u32</span> = <span class="tok-null">null</span>;</span>
<span class="line" id="L350"> <span class="tok-kw">try</span> testing.expectEqual(testHash(a), testHash(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">123</span>)));</span>
<span class="line" id="L351"> <span class="tok-kw">try</span> testing.expect(testHash(a) != testHash(b));</span>
<span class="line" id="L352"> <span class="tok-kw">try</span> testing.expectEqual(testHash(b), <span class="tok-number">0x409638ee2bde459</span>); <span class="tok-comment">// wyhash empty input hash</span>
</span>
<span class="line" id="L353">}</span>
<span class="line" id="L354"></span>
<span class="line" id="L355"><span class="tok-kw">test</span> <span class="tok-str">"testHash array"</span> {</span>
<span class="line" id="L356"> <span class="tok-kw">const</span> a = [_]<span class="tok-type">u32</span>{ <span class="tok-number">1</span>, <span class="tok-number">2</span>, <span class="tok-number">3</span> };</span>
<span class="line" id="L357"> <span class="tok-kw">const</span> h = testHash(a);</span>
<span class="line" id="L358"> <span class="tok-kw">var</span> hasher = Wyhash.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L359"> autoHash(&hasher, <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">1</span>));</span>
<span class="line" id="L360"> autoHash(&hasher, <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">2</span>));</span>
<span class="line" id="L361"> autoHash(&hasher, <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">3</span>));</span>
<span class="line" id="L362"> <span class="tok-kw">try</span> testing.expectEqual(h, hasher.final());</span>
<span class="line" id="L363">}</span>
<span class="line" id="L364"></span>
<span class="line" id="L365"><span class="tok-kw">test</span> <span class="tok-str">"testHash multi-dimensional array"</span> {</span>
<span class="line" id="L366"> <span class="tok-kw">const</span> a = [_][]<span class="tok-kw">const</span> <span class="tok-type">u32</span>{ &.{ <span class="tok-number">1</span>, <span class="tok-number">2</span>, <span class="tok-number">3</span> }, &.{ <span class="tok-number">4</span>, <span class="tok-number">5</span> } };</span>
<span class="line" id="L367"> <span class="tok-kw">const</span> b = [_][]<span class="tok-kw">const</span> <span class="tok-type">u32</span>{ &.{ <span class="tok-number">1</span>, <span class="tok-number">2</span> }, &.{ <span class="tok-number">3</span>, <span class="tok-number">4</span>, <span class="tok-number">5</span> } };</span>
<span class="line" id="L368"> <span class="tok-kw">try</span> testing.expect(testHash(a) != testHash(b));</span>
<span class="line" id="L369">}</span>
<span class="line" id="L370"></span>
<span class="line" id="L371"><span class="tok-kw">test</span> <span class="tok-str">"testHash struct"</span> {</span>
<span class="line" id="L372"> <span class="tok-kw">const</span> Foo = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L373"> a: <span class="tok-type">u32</span> = <span class="tok-number">1</span>,</span>
<span class="line" id="L374"> b: <span class="tok-type">u32</span> = <span class="tok-number">2</span>,</span>
<span class="line" id="L375"> c: <span class="tok-type">u32</span> = <span class="tok-number">3</span>,</span>
<span class="line" id="L376"> };</span>
<span class="line" id="L377"> <span class="tok-kw">const</span> f = Foo{};</span>
<span class="line" id="L378"> <span class="tok-kw">const</span> h = testHash(f);</span>
<span class="line" id="L379"> <span class="tok-kw">var</span> hasher = Wyhash.init(<span class="tok-number">0</span>);</span>
<span class="line" id="L380"> autoHash(&hasher, <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">1</span>));</span>
<span class="line" id="L381"> autoHash(&hasher, <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">2</span>));</span>
<span class="line" id="L382"> autoHash(&hasher, <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">3</span>));</span>
<span class="line" id="L383"> <span class="tok-kw">try</span> testing.expectEqual(h, hasher.final());</span>
<span class="line" id="L384">}</span>
<span class="line" id="L385"></span>
<span class="line" id="L386"><span class="tok-kw">test</span> <span class="tok-str">"testHash union"</span> {</span>
<span class="line" id="L387"> <span class="tok-kw">const</span> Foo = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L388"> A: <span class="tok-type">u32</span>,</span>
<span class="line" id="L389"> B: <span class="tok-type">bool</span>,</span>
<span class="line" id="L390"> C: <span class="tok-type">u32</span>,</span>
<span class="line" id="L391"> D: <span class="tok-type">void</span>,</span>
<span class="line" id="L392"> };</span>
<span class="line" id="L393"></span>
<span class="line" id="L394"> <span class="tok-kw">const</span> a = Foo{ .A = <span class="tok-number">18</span> };</span>
<span class="line" id="L395"> <span class="tok-kw">var</span> b = Foo{ .B = <span class="tok-null">true</span> };</span>
<span class="line" id="L396"> <span class="tok-kw">const</span> c = Foo{ .C = <span class="tok-number">18</span> };</span>
<span class="line" id="L397"> <span class="tok-kw">const</span> d: Foo = .D;</span>
<span class="line" id="L398"> <span class="tok-kw">try</span> testing.expect(testHash(a) == testHash(a));</span>
<span class="line" id="L399"> <span class="tok-kw">try</span> testing.expect(testHash(a) != testHash(b));</span>
<span class="line" id="L400"> <span class="tok-kw">try</span> testing.expect(testHash(a) != testHash(c));</span>
<span class="line" id="L401"> <span class="tok-kw">try</span> testing.expect(testHash(a) != testHash(d));</span>
<span class="line" id="L402"></span>
<span class="line" id="L403"> b = Foo{ .A = <span class="tok-number">18</span> };</span>
<span class="line" id="L404"> <span class="tok-kw">try</span> testing.expect(testHash(a) == testHash(b));</span>
<span class="line" id="L405"></span>
<span class="line" id="L406"> b = .D;</span>
<span class="line" id="L407"> <span class="tok-kw">try</span> testing.expect(testHash(d) == testHash(b));</span>
<span class="line" id="L408">}</span>
<span class="line" id="L409"></span>
<span class="line" id="L410"><span class="tok-kw">test</span> <span class="tok-str">"testHash vector"</span> {</span>
<span class="line" id="L411"> <span class="tok-kw">const</span> a: <span class="tok-builtin">@Vector</span>(<span class="tok-number">4</span>, <span class="tok-type">u32</span>) = [_]<span class="tok-type">u32</span>{ <span class="tok-number">1</span>, <span class="tok-number">2</span>, <span class="tok-number">3</span>, <span class="tok-number">4</span> };</span>
<span class="line" id="L412"> <span class="tok-kw">const</span> b: <span class="tok-builtin">@Vector</span>(<span class="tok-number">4</span>, <span class="tok-type">u32</span>) = [_]<span class="tok-type">u32</span>{ <span class="tok-number">1</span>, <span class="tok-number">2</span>, <span class="tok-number">3</span>, <span class="tok-number">5</span> };</span>
<span class="line" id="L413"> <span class="tok-kw">try</span> testing.expect(testHash(a) == testHash(a));</span>
<span class="line" id="L414"> <span class="tok-kw">try</span> testing.expect(testHash(a) != testHash(b));</span>
<span class="line" id="L415"></span>
<span class="line" id="L416"> <span class="tok-kw">const</span> c: <span class="tok-builtin">@Vector</span>(<span class="tok-number">4</span>, <span class="tok-type">u31</span>) = [_]<span class="tok-type">u31</span>{ <span class="tok-number">1</span>, <span class="tok-number">2</span>, <span class="tok-number">3</span>, <span class="tok-number">4</span> };</span>
<span class="line" id="L417"> <span class="tok-kw">const</span> d: <span class="tok-builtin">@Vector</span>(<span class="tok-number">4</span>, <span class="tok-type">u31</span>) = [_]<span class="tok-type">u31</span>{ <span class="tok-number">1</span>, <span class="tok-number">2</span>, <span class="tok-number">3</span>, <span class="tok-number">5</span> };</span>
<span class="line" id="L418"> <span class="tok-kw">try</span> testing.expect(testHash(c) == testHash(c));</span>
<span class="line" id="L419"> <span class="tok-kw">try</span> testing.expect(testHash(c) != testHash(d));</span>
<span class="line" id="L420">}</span>
<span class="line" id="L421"></span>
<span class="line" id="L422"><span class="tok-kw">test</span> <span class="tok-str">"testHash error union"</span> {</span>
<span class="line" id="L423"> <span class="tok-kw">const</span> Errors = <span class="tok-kw">error</span>{Test};</span>
<span class="line" id="L424"> <span class="tok-kw">const</span> Foo = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L425"> a: <span class="tok-type">u32</span> = <span class="tok-number">1</span>,</span>
<span class="line" id="L426"> b: <span class="tok-type">u32</span> = <span class="tok-number">2</span>,</span>
<span class="line" id="L427"> c: <span class="tok-type">u32</span> = <span class="tok-number">3</span>,</span>
<span class="line" id="L428"> };</span>
<span class="line" id="L429"> <span class="tok-kw">const</span> f = Foo{};</span>
<span class="line" id="L430"> <span class="tok-kw">const</span> g: Errors!Foo = Errors.Test;</span>
<span class="line" id="L431"> <span class="tok-kw">try</span> testing.expect(testHash(f) != testHash(g));</span>
<span class="line" id="L432"> <span class="tok-kw">try</span> testing.expect(testHash(f) == testHash(Foo{}));</span>
<span class="line" id="L433"> <span class="tok-kw">try</span> testing.expect(testHash(g) == testHash(Errors.Test));</span>
<span class="line" id="L434">}</span>
<span class="line" id="L435"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">offsetPtr</span>(ptr: [*]<span class="tok-kw">const</span> <span class="tok-type">u8</span>, offset: <span class="tok-type">usize</span>) [*]<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L4"> <span class="tok-comment">// ptr + offset doesn't work at comptime so we need this instead.</span>
</span>
<span class="line" id="L5"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>([*]<span class="tok-kw">const</span> <span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&ptr[offset]));</span>
<span class="line" id="L6">}</span>
<span class="line" id="L7"></span>
<span class="line" id="L8"><span class="tok-kw">fn</span> <span class="tok-fn">fetch32</span>(ptr: [*]<span class="tok-kw">const</span> <span class="tok-type">u8</span>, offset: <span class="tok-type">usize</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L9"> <span class="tok-kw">return</span> std.mem.readIntLittle(<span class="tok-type">u32</span>, offsetPtr(ptr, offset)[<span class="tok-number">0</span>..<span class="tok-number">4</span>]);</span>
<span class="line" id="L10">}</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"><span class="tok-kw">fn</span> <span class="tok-fn">fetch64</span>(ptr: [*]<span class="tok-kw">const</span> <span class="tok-type">u8</span>, offset: <span class="tok-type">usize</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L13"> <span class="tok-kw">return</span> std.mem.readIntLittle(<span class="tok-type">u64</span>, offsetPtr(ptr, offset)[<span class="tok-number">0</span>..<span class="tok-number">8</span>]);</span>
<span class="line" id="L14">}</span>
<span class="line" id="L15"></span>
<span class="line" id="L16"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> CityHash32 = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L17"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L18"></span>
<span class="line" id="L19"> <span class="tok-comment">// Magic numbers for 32-bit hashing. Copied from Murmur3.</span>
</span>
<span class="line" id="L20"> <span class="tok-kw">const</span> c1: <span class="tok-type">u32</span> = <span class="tok-number">0xcc9e2d51</span>;</span>
<span class="line" id="L21"> <span class="tok-kw">const</span> c2: <span class="tok-type">u32</span> = <span class="tok-number">0x1b873593</span>;</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"> <span class="tok-comment">// A 32-bit to 32-bit integer hash copied from Murmur3.</span>
</span>
<span class="line" id="L24"> <span class="tok-kw">fn</span> <span class="tok-fn">fmix</span>(h: <span class="tok-type">u32</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L25"> <span class="tok-kw">var</span> h1: <span class="tok-type">u32</span> = h;</span>
<span class="line" id="L26"> h1 ^= h1 >> <span class="tok-number">16</span>;</span>
<span class="line" id="L27"> h1 *%= <span class="tok-number">0x85ebca6b</span>;</span>
<span class="line" id="L28"> h1 ^= h1 >> <span class="tok-number">13</span>;</span>
<span class="line" id="L29"> h1 *%= <span class="tok-number">0xc2b2ae35</span>;</span>
<span class="line" id="L30"> h1 ^= h1 >> <span class="tok-number">16</span>;</span>
<span class="line" id="L31"> <span class="tok-kw">return</span> h1;</span>
<span class="line" id="L32"> }</span>
<span class="line" id="L33"></span>
<span class="line" id="L34"> <span class="tok-comment">// Rotate right helper</span>
</span>
<span class="line" id="L35"> <span class="tok-kw">fn</span> <span class="tok-fn">rotr32</span>(x: <span class="tok-type">u32</span>, <span class="tok-kw">comptime</span> r: <span class="tok-type">u32</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L36"> <span class="tok-kw">return</span> (x >> r) | (x << (<span class="tok-number">32</span> - r));</span>
<span class="line" id="L37"> }</span>
<span class="line" id="L38"></span>
<span class="line" id="L39"> <span class="tok-comment">// Helper from Murmur3 for combining two 32-bit values.</span>
</span>
<span class="line" id="L40"> <span class="tok-kw">fn</span> <span class="tok-fn">mur</span>(a: <span class="tok-type">u32</span>, h: <span class="tok-type">u32</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L41"> <span class="tok-kw">var</span> a1: <span class="tok-type">u32</span> = a;</span>
<span class="line" id="L42"> <span class="tok-kw">var</span> h1: <span class="tok-type">u32</span> = h;</span>
<span class="line" id="L43"> a1 *%= c1;</span>
<span class="line" id="L44"> a1 = rotr32(a1, <span class="tok-number">17</span>);</span>
<span class="line" id="L45"> a1 *%= c2;</span>
<span class="line" id="L46"> h1 ^= a1;</span>
<span class="line" id="L47"> h1 = rotr32(h1, <span class="tok-number">19</span>);</span>
<span class="line" id="L48"> <span class="tok-kw">return</span> h1 *% <span class="tok-number">5</span> +% <span class="tok-number">0xe6546b64</span>;</span>
<span class="line" id="L49"> }</span>
<span class="line" id="L50"></span>
<span class="line" id="L51"> <span class="tok-kw">fn</span> <span class="tok-fn">hash32Len0To4</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L52"> <span class="tok-kw">const</span> len: <span class="tok-type">u32</span> = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>(str.len));</span>
<span class="line" id="L53"> <span class="tok-kw">var</span> b: <span class="tok-type">u32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L54"> <span class="tok-kw">var</span> c: <span class="tok-type">u32</span> = <span class="tok-number">9</span>;</span>
<span class="line" id="L55"> <span class="tok-kw">for</span> (str) |v| {</span>
<span class="line" id="L56"> b = b *% c1 +% <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">i8</span>, <span class="tok-builtin">@bitCast</span>(v))))));</span>
<span class="line" id="L57"> c ^= b;</span>
<span class="line" id="L58"> }</span>
<span class="line" id="L59"> <span class="tok-kw">return</span> fmix(mur(b, mur(len, c)));</span>
<span class="line" id="L60"> }</span>
<span class="line" id="L61"></span>
<span class="line" id="L62"> <span class="tok-kw">fn</span> <span class="tok-fn">hash32Len5To12</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L63"> <span class="tok-kw">var</span> a: <span class="tok-type">u32</span> = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>(str.len));</span>
<span class="line" id="L64"> <span class="tok-kw">var</span> b: <span class="tok-type">u32</span> = a *% <span class="tok-number">5</span>;</span>
<span class="line" id="L65"> <span class="tok-kw">var</span> c: <span class="tok-type">u32</span> = <span class="tok-number">9</span>;</span>
<span class="line" id="L66"> <span class="tok-kw">const</span> d: <span class="tok-type">u32</span> = b;</span>
<span class="line" id="L67"></span>
<span class="line" id="L68"> a +%= fetch32(str.ptr, <span class="tok-number">0</span>);</span>
<span class="line" id="L69"> b +%= fetch32(str.ptr, str.len - <span class="tok-number">4</span>);</span>
<span class="line" id="L70"> c +%= fetch32(str.ptr, (str.len >> <span class="tok-number">1</span>) & <span class="tok-number">4</span>);</span>
<span class="line" id="L71"></span>
<span class="line" id="L72"> <span class="tok-kw">return</span> fmix(mur(c, mur(b, mur(a, d))));</span>
<span class="line" id="L73"> }</span>
<span class="line" id="L74"></span>
<span class="line" id="L75"> <span class="tok-kw">fn</span> <span class="tok-fn">hash32Len13To24</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L76"> <span class="tok-kw">const</span> len: <span class="tok-type">u32</span> = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>(str.len));</span>
<span class="line" id="L77"> <span class="tok-kw">const</span> a: <span class="tok-type">u32</span> = fetch32(str.ptr, (str.len >> <span class="tok-number">1</span>) - <span class="tok-number">4</span>);</span>
<span class="line" id="L78"> <span class="tok-kw">const</span> b: <span class="tok-type">u32</span> = fetch32(str.ptr, <span class="tok-number">4</span>);</span>
<span class="line" id="L79"> <span class="tok-kw">const</span> c: <span class="tok-type">u32</span> = fetch32(str.ptr, str.len - <span class="tok-number">8</span>);</span>
<span class="line" id="L80"> <span class="tok-kw">const</span> d: <span class="tok-type">u32</span> = fetch32(str.ptr, str.len >> <span class="tok-number">1</span>);</span>
<span class="line" id="L81"> <span class="tok-kw">const</span> e: <span class="tok-type">u32</span> = fetch32(str.ptr, <span class="tok-number">0</span>);</span>
<span class="line" id="L82"> <span class="tok-kw">const</span> f: <span class="tok-type">u32</span> = fetch32(str.ptr, str.len - <span class="tok-number">4</span>);</span>
<span class="line" id="L83"></span>
<span class="line" id="L84"> <span class="tok-kw">return</span> fmix(mur(f, mur(e, mur(d, mur(c, mur(b, mur(a, len)))))));</span>
<span class="line" id="L85"> }</span>
<span class="line" id="L86"></span>
<span class="line" id="L87"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hash</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L88"> <span class="tok-kw">if</span> (str.len <= <span class="tok-number">24</span>) {</span>
<span class="line" id="L89"> <span class="tok-kw">if</span> (str.len <= <span class="tok-number">4</span>) {</span>
<span class="line" id="L90"> <span class="tok-kw">return</span> hash32Len0To4(str);</span>
<span class="line" id="L91"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L92"> <span class="tok-kw">if</span> (str.len <= <span class="tok-number">12</span>)</span>
<span class="line" id="L93"> <span class="tok-kw">return</span> hash32Len5To12(str);</span>
<span class="line" id="L94"> <span class="tok-kw">return</span> hash32Len13To24(str);</span>
<span class="line" id="L95"> }</span>
<span class="line" id="L96"> }</span>
<span class="line" id="L97"></span>
<span class="line" id="L98"> <span class="tok-kw">const</span> len: <span class="tok-type">u32</span> = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>(str.len));</span>
<span class="line" id="L99"> <span class="tok-kw">var</span> h: <span class="tok-type">u32</span> = len;</span>
<span class="line" id="L100"> <span class="tok-kw">var</span> g: <span class="tok-type">u32</span> = c1 *% len;</span>
<span class="line" id="L101"> <span class="tok-kw">var</span> f: <span class="tok-type">u32</span> = g;</span>
<span class="line" id="L102"></span>
<span class="line" id="L103"> <span class="tok-kw">const</span> a0: <span class="tok-type">u32</span> = rotr32(fetch32(str.ptr, str.len - <span class="tok-number">4</span>) *% c1, <span class="tok-number">17</span>) *% c2;</span>
<span class="line" id="L104"> <span class="tok-kw">const</span> a1: <span class="tok-type">u32</span> = rotr32(fetch32(str.ptr, str.len - <span class="tok-number">8</span>) *% c1, <span class="tok-number">17</span>) *% c2;</span>
<span class="line" id="L105"> <span class="tok-kw">const</span> a2: <span class="tok-type">u32</span> = rotr32(fetch32(str.ptr, str.len - <span class="tok-number">16</span>) *% c1, <span class="tok-number">17</span>) *% c2;</span>
<span class="line" id="L106"> <span class="tok-kw">const</span> a3: <span class="tok-type">u32</span> = rotr32(fetch32(str.ptr, str.len - <span class="tok-number">12</span>) *% c1, <span class="tok-number">17</span>) *% c2;</span>
<span class="line" id="L107"> <span class="tok-kw">const</span> a4: <span class="tok-type">u32</span> = rotr32(fetch32(str.ptr, str.len - <span class="tok-number">20</span>) *% c1, <span class="tok-number">17</span>) *% c2;</span>
<span class="line" id="L108"></span>
<span class="line" id="L109"> h ^= a0;</span>
<span class="line" id="L110"> h = rotr32(h, <span class="tok-number">19</span>);</span>
<span class="line" id="L111"> h = h *% <span class="tok-number">5</span> +% <span class="tok-number">0xe6546b64</span>;</span>
<span class="line" id="L112"> h ^= a2;</span>
<span class="line" id="L113"> h = rotr32(h, <span class="tok-number">19</span>);</span>
<span class="line" id="L114"> h = h *% <span class="tok-number">5</span> +% <span class="tok-number">0xe6546b64</span>;</span>
<span class="line" id="L115"> g ^= a1;</span>
<span class="line" id="L116"> g = rotr32(g, <span class="tok-number">19</span>);</span>
<span class="line" id="L117"> g = g *% <span class="tok-number">5</span> +% <span class="tok-number">0xe6546b64</span>;</span>
<span class="line" id="L118"> g ^= a3;</span>
<span class="line" id="L119"> g = rotr32(g, <span class="tok-number">19</span>);</span>
<span class="line" id="L120"> g = g *% <span class="tok-number">5</span> +% <span class="tok-number">0xe6546b64</span>;</span>
<span class="line" id="L121"> f +%= a4;</span>
<span class="line" id="L122"> f = rotr32(f, <span class="tok-number">19</span>);</span>
<span class="line" id="L123"> f = f *% <span class="tok-number">5</span> +% <span class="tok-number">0xe6546b64</span>;</span>
<span class="line" id="L124"> <span class="tok-kw">var</span> iters = (str.len - <span class="tok-number">1</span>) / <span class="tok-number">20</span>;</span>
<span class="line" id="L125"> <span class="tok-kw">var</span> ptr = str.ptr;</span>
<span class="line" id="L126"> <span class="tok-kw">while</span> (iters != <span class="tok-number">0</span>) : (iters -= <span class="tok-number">1</span>) {</span>
<span class="line" id="L127"> <span class="tok-kw">const</span> b0: <span class="tok-type">u32</span> = rotr32(fetch32(ptr, <span class="tok-number">0</span>) *% c1, <span class="tok-number">17</span>) *% c2;</span>
<span class="line" id="L128"> <span class="tok-kw">const</span> b1: <span class="tok-type">u32</span> = fetch32(ptr, <span class="tok-number">4</span>);</span>
<span class="line" id="L129"> <span class="tok-kw">const</span> b2: <span class="tok-type">u32</span> = rotr32(fetch32(ptr, <span class="tok-number">8</span>) *% c1, <span class="tok-number">17</span>) *% c2;</span>
<span class="line" id="L130"> <span class="tok-kw">const</span> b3: <span class="tok-type">u32</span> = rotr32(fetch32(ptr, <span class="tok-number">12</span>) *% c1, <span class="tok-number">17</span>) *% c2;</span>
<span class="line" id="L131"> <span class="tok-kw">const</span> b4: <span class="tok-type">u32</span> = fetch32(ptr, <span class="tok-number">16</span>);</span>
<span class="line" id="L132"></span>
<span class="line" id="L133"> h ^= b0;</span>
<span class="line" id="L134"> h = rotr32(h, <span class="tok-number">18</span>);</span>
<span class="line" id="L135"> h = h *% <span class="tok-number">5</span> +% <span class="tok-number">0xe6546b64</span>;</span>
<span class="line" id="L136"> f +%= b1;</span>
<span class="line" id="L137"> f = rotr32(f, <span class="tok-number">19</span>);</span>
<span class="line" id="L138"> f = f *% c1;</span>
<span class="line" id="L139"> g +%= b2;</span>
<span class="line" id="L140"> g = rotr32(g, <span class="tok-number">18</span>);</span>
<span class="line" id="L141"> g = g *% <span class="tok-number">5</span> +% <span class="tok-number">0xe6546b64</span>;</span>
<span class="line" id="L142"> h ^= b3 +% b1;</span>
<span class="line" id="L143"> h = rotr32(h, <span class="tok-number">19</span>);</span>
<span class="line" id="L144"> h = h *% <span class="tok-number">5</span> +% <span class="tok-number">0xe6546b64</span>;</span>
<span class="line" id="L145"> g ^= b4;</span>
<span class="line" id="L146"> g = <span class="tok-builtin">@byteSwap</span>(g) *% <span class="tok-number">5</span>;</span>
<span class="line" id="L147"> h +%= b4 *% <span class="tok-number">5</span>;</span>
<span class="line" id="L148"> h = <span class="tok-builtin">@byteSwap</span>(h);</span>
<span class="line" id="L149"> f +%= b0;</span>
<span class="line" id="L150"> <span class="tok-kw">const</span> t: <span class="tok-type">u32</span> = h;</span>
<span class="line" id="L151"> h = f;</span>
<span class="line" id="L152"> f = g;</span>
<span class="line" id="L153"> g = t;</span>
<span class="line" id="L154"> ptr = offsetPtr(ptr, <span class="tok-number">20</span>);</span>
<span class="line" id="L155"> }</span>
<span class="line" id="L156"> g = rotr32(g, <span class="tok-number">11</span>) *% c1;</span>
<span class="line" id="L157"> g = rotr32(g, <span class="tok-number">17</span>) *% c1;</span>
<span class="line" id="L158"> f = rotr32(f, <span class="tok-number">11</span>) *% c1;</span>
<span class="line" id="L159"> f = rotr32(f, <span class="tok-number">17</span>) *% c1;</span>
<span class="line" id="L160"> h = rotr32(h +% g, <span class="tok-number">19</span>);</span>
<span class="line" id="L161"> h = h *% <span class="tok-number">5</span> +% <span class="tok-number">0xe6546b64</span>;</span>
<span class="line" id="L162"> h = rotr32(h, <span class="tok-number">17</span>) *% c1;</span>
<span class="line" id="L163"> h = rotr32(h +% f, <span class="tok-number">19</span>);</span>
<span class="line" id="L164"> h = h *% <span class="tok-number">5</span> +% <span class="tok-number">0xe6546b64</span>;</span>
<span class="line" id="L165"> h = rotr32(h, <span class="tok-number">17</span>) *% c1;</span>
<span class="line" id="L166"> <span class="tok-kw">return</span> h;</span>
<span class="line" id="L167"> }</span>
<span class="line" id="L168">};</span>
<span class="line" id="L169"></span>
<span class="line" id="L170"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> CityHash64 = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L171"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L172"></span>
<span class="line" id="L173"> <span class="tok-comment">// Some primes between 2^63 and 2^64 for various uses.</span>
</span>
<span class="line" id="L174"> <span class="tok-kw">const</span> k0: <span class="tok-type">u64</span> = <span class="tok-number">0xc3a5c85c97cb3127</span>;</span>
<span class="line" id="L175"> <span class="tok-kw">const</span> k1: <span class="tok-type">u64</span> = <span class="tok-number">0xb492b66fbe98f273</span>;</span>
<span class="line" id="L176"> <span class="tok-kw">const</span> k2: <span class="tok-type">u64</span> = <span class="tok-number">0x9ae16a3b2f90404f</span>;</span>
<span class="line" id="L177"></span>
<span class="line" id="L178"> <span class="tok-comment">// Rotate right helper</span>
</span>
<span class="line" id="L179"> <span class="tok-kw">fn</span> <span class="tok-fn">rotr64</span>(x: <span class="tok-type">u64</span>, <span class="tok-kw">comptime</span> r: <span class="tok-type">u64</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L180"> <span class="tok-kw">return</span> (x >> r) | (x << (<span class="tok-number">64</span> - r));</span>
<span class="line" id="L181"> }</span>
<span class="line" id="L182"></span>
<span class="line" id="L183"> <span class="tok-kw">fn</span> <span class="tok-fn">shiftmix</span>(v: <span class="tok-type">u64</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L184"> <span class="tok-kw">return</span> v ^ (v >> <span class="tok-number">47</span>);</span>
<span class="line" id="L185"> }</span>
<span class="line" id="L186"></span>
<span class="line" id="L187"> <span class="tok-kw">fn</span> <span class="tok-fn">hashLen16</span>(u: <span class="tok-type">u64</span>, v: <span class="tok-type">u64</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L188"> <span class="tok-kw">return</span> <span class="tok-builtin">@call</span>(.always_inline, hash128To64, .{ u, v });</span>
<span class="line" id="L189"> }</span>
<span class="line" id="L190"></span>
<span class="line" id="L191"> <span class="tok-kw">fn</span> <span class="tok-fn">hashLen16Mul</span>(low: <span class="tok-type">u64</span>, high: <span class="tok-type">u64</span>, mul: <span class="tok-type">u64</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L192"> <span class="tok-kw">var</span> a: <span class="tok-type">u64</span> = (low ^ high) *% mul;</span>
<span class="line" id="L193"> a ^= (a >> <span class="tok-number">47</span>);</span>
<span class="line" id="L194"> <span class="tok-kw">var</span> b: <span class="tok-type">u64</span> = (high ^ a) *% mul;</span>
<span class="line" id="L195"> b ^= (b >> <span class="tok-number">47</span>);</span>
<span class="line" id="L196"> b *%= mul;</span>
<span class="line" id="L197"> <span class="tok-kw">return</span> b;</span>
<span class="line" id="L198"> }</span>
<span class="line" id="L199"></span>
<span class="line" id="L200"> <span class="tok-kw">fn</span> <span class="tok-fn">hash128To64</span>(low: <span class="tok-type">u64</span>, high: <span class="tok-type">u64</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L201"> <span class="tok-kw">return</span> <span class="tok-builtin">@call</span>(.always_inline, hashLen16Mul, .{ low, high, <span class="tok-number">0x9ddfea08eb382d69</span> });</span>
<span class="line" id="L202"> }</span>
<span class="line" id="L203"></span>
<span class="line" id="L204"> <span class="tok-kw">fn</span> <span class="tok-fn">hashLen0To16</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L205"> <span class="tok-kw">const</span> len: <span class="tok-type">u64</span> = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, str.len);</span>
<span class="line" id="L206"> <span class="tok-kw">if</span> (len >= <span class="tok-number">8</span>) {</span>
<span class="line" id="L207"> <span class="tok-kw">const</span> mul: <span class="tok-type">u64</span> = k2 +% len *% <span class="tok-number">2</span>;</span>
<span class="line" id="L208"> <span class="tok-kw">const</span> a: <span class="tok-type">u64</span> = fetch64(str.ptr, <span class="tok-number">0</span>) +% k2;</span>
<span class="line" id="L209"> <span class="tok-kw">const</span> b: <span class="tok-type">u64</span> = fetch64(str.ptr, str.len - <span class="tok-number">8</span>);</span>
<span class="line" id="L210"> <span class="tok-kw">const</span> c: <span class="tok-type">u64</span> = rotr64(b, <span class="tok-number">37</span>) *% mul +% a;</span>
<span class="line" id="L211"> <span class="tok-kw">const</span> d: <span class="tok-type">u64</span> = (rotr64(a, <span class="tok-number">25</span>) +% b) *% mul;</span>
<span class="line" id="L212"> <span class="tok-kw">return</span> hashLen16Mul(c, d, mul);</span>
<span class="line" id="L213"> }</span>
<span class="line" id="L214"> <span class="tok-kw">if</span> (len >= <span class="tok-number">4</span>) {</span>
<span class="line" id="L215"> <span class="tok-kw">const</span> mul: <span class="tok-type">u64</span> = k2 +% len *% <span class="tok-number">2</span>;</span>
<span class="line" id="L216"> <span class="tok-kw">const</span> a: <span class="tok-type">u64</span> = fetch32(str.ptr, <span class="tok-number">0</span>);</span>
<span class="line" id="L217"> <span class="tok-kw">return</span> hashLen16Mul(len +% (a << <span class="tok-number">3</span>), fetch32(str.ptr, str.len - <span class="tok-number">4</span>), mul);</span>
<span class="line" id="L218"> }</span>
<span class="line" id="L219"> <span class="tok-kw">if</span> (len > <span class="tok-number">0</span>) {</span>
<span class="line" id="L220"> <span class="tok-kw">const</span> a: <span class="tok-type">u8</span> = str[<span class="tok-number">0</span>];</span>
<span class="line" id="L221"> <span class="tok-kw">const</span> b: <span class="tok-type">u8</span> = str[str.len >> <span class="tok-number">1</span>];</span>
<span class="line" id="L222"> <span class="tok-kw">const</span> c: <span class="tok-type">u8</span> = str[str.len - <span class="tok-number">1</span>];</span>
<span class="line" id="L223"> <span class="tok-kw">const</span> y: <span class="tok-type">u32</span> = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(a)) +% (<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(b)) << <span class="tok-number">8</span>);</span>
<span class="line" id="L224"> <span class="tok-kw">const</span> z: <span class="tok-type">u32</span> = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>(str.len)) +% (<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(c)) << <span class="tok-number">2</span>);</span>
<span class="line" id="L225"> <span class="tok-kw">return</span> shiftmix(<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@intCast</span>(y)) *% k2 ^ <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@intCast</span>(z)) *% k0) *% k2;</span>
<span class="line" id="L226"> }</span>
<span class="line" id="L227"> <span class="tok-kw">return</span> k2;</span>
<span class="line" id="L228"> }</span>
<span class="line" id="L229"></span>
<span class="line" id="L230"> <span class="tok-kw">fn</span> <span class="tok-fn">hashLen17To32</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L231"> <span class="tok-kw">const</span> len: <span class="tok-type">u64</span> = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, str.len);</span>
<span class="line" id="L232"> <span class="tok-kw">const</span> mul: <span class="tok-type">u64</span> = k2 +% len *% <span class="tok-number">2</span>;</span>
<span class="line" id="L233"> <span class="tok-kw">const</span> a: <span class="tok-type">u64</span> = fetch64(str.ptr, <span class="tok-number">0</span>) *% k1;</span>
<span class="line" id="L234"> <span class="tok-kw">const</span> b: <span class="tok-type">u64</span> = fetch64(str.ptr, <span class="tok-number">8</span>);</span>
<span class="line" id="L235"> <span class="tok-kw">const</span> c: <span class="tok-type">u64</span> = fetch64(str.ptr, str.len - <span class="tok-number">8</span>) *% mul;</span>
<span class="line" id="L236"> <span class="tok-kw">const</span> d: <span class="tok-type">u64</span> = fetch64(str.ptr, str.len - <span class="tok-number">16</span>) *% k2;</span>
<span class="line" id="L237"></span>
<span class="line" id="L238"> <span class="tok-kw">return</span> hashLen16Mul(rotr64(a +% b, <span class="tok-number">43</span>) +% rotr64(c, <span class="tok-number">30</span>) +% d, a +% rotr64(b +% k2, <span class="tok-number">18</span>) +% c, mul);</span>
<span class="line" id="L239"> }</span>
<span class="line" id="L240"></span>
<span class="line" id="L241"> <span class="tok-kw">fn</span> <span class="tok-fn">hashLen33To64</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L242"> <span class="tok-kw">const</span> len: <span class="tok-type">u64</span> = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, str.len);</span>
<span class="line" id="L243"> <span class="tok-kw">const</span> mul: <span class="tok-type">u64</span> = k2 +% len *% <span class="tok-number">2</span>;</span>
<span class="line" id="L244"> <span class="tok-kw">const</span> a: <span class="tok-type">u64</span> = fetch64(str.ptr, <span class="tok-number">0</span>) *% k2;</span>
<span class="line" id="L245"> <span class="tok-kw">const</span> b: <span class="tok-type">u64</span> = fetch64(str.ptr, <span class="tok-number">8</span>);</span>
<span class="line" id="L246"> <span class="tok-kw">const</span> c: <span class="tok-type">u64</span> = fetch64(str.ptr, str.len - <span class="tok-number">24</span>);</span>
<span class="line" id="L247"> <span class="tok-kw">const</span> d: <span class="tok-type">u64</span> = fetch64(str.ptr, str.len - <span class="tok-number">32</span>);</span>
<span class="line" id="L248"> <span class="tok-kw">const</span> e: <span class="tok-type">u64</span> = fetch64(str.ptr, <span class="tok-number">16</span>) *% k2;</span>
<span class="line" id="L249"> <span class="tok-kw">const</span> f: <span class="tok-type">u64</span> = fetch64(str.ptr, <span class="tok-number">24</span>) *% <span class="tok-number">9</span>;</span>
<span class="line" id="L250"> <span class="tok-kw">const</span> g: <span class="tok-type">u64</span> = fetch64(str.ptr, str.len - <span class="tok-number">8</span>);</span>
<span class="line" id="L251"> <span class="tok-kw">const</span> h: <span class="tok-type">u64</span> = fetch64(str.ptr, str.len - <span class="tok-number">16</span>) *% mul;</span>
<span class="line" id="L252"></span>
<span class="line" id="L253"> <span class="tok-kw">const</span> u: <span class="tok-type">u64</span> = rotr64(a +% g, <span class="tok-number">43</span>) +% (rotr64(b, <span class="tok-number">30</span>) +% c) *% <span class="tok-number">9</span>;</span>
<span class="line" id="L254"> <span class="tok-kw">const</span> v: <span class="tok-type">u64</span> = ((a +% g) ^ d) +% f +% <span class="tok-number">1</span>;</span>
<span class="line" id="L255"> <span class="tok-kw">const</span> w: <span class="tok-type">u64</span> = <span class="tok-builtin">@byteSwap</span>((u +% v) *% mul) +% h;</span>
<span class="line" id="L256"> <span class="tok-kw">const</span> x: <span class="tok-type">u64</span> = rotr64(e +% f, <span class="tok-number">42</span>) +% c;</span>
<span class="line" id="L257"> <span class="tok-kw">const</span> y: <span class="tok-type">u64</span> = (<span class="tok-builtin">@byteSwap</span>((v +% w) *% mul) +% g) *% mul;</span>
<span class="line" id="L258"> <span class="tok-kw">const</span> z: <span class="tok-type">u64</span> = e +% f +% c;</span>
<span class="line" id="L259"> <span class="tok-kw">const</span> a1: <span class="tok-type">u64</span> = <span class="tok-builtin">@byteSwap</span>((x +% z) *% mul +% y) +% b;</span>
<span class="line" id="L260"> <span class="tok-kw">const</span> b1: <span class="tok-type">u64</span> = shiftmix((z +% a1) *% mul +% d +% h) *% mul;</span>
<span class="line" id="L261"> <span class="tok-kw">return</span> b1 +% x;</span>
<span class="line" id="L262"> }</span>
<span class="line" id="L263"></span>
<span class="line" id="L264"> <span class="tok-kw">const</span> WeakPair = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L265"> first: <span class="tok-type">u64</span>,</span>
<span class="line" id="L266"> second: <span class="tok-type">u64</span>,</span>
<span class="line" id="L267"> };</span>
<span class="line" id="L268"></span>
<span class="line" id="L269"> <span class="tok-kw">fn</span> <span class="tok-fn">weakHashLen32WithSeedsHelper</span>(w: <span class="tok-type">u64</span>, x: <span class="tok-type">u64</span>, y: <span class="tok-type">u64</span>, z: <span class="tok-type">u64</span>, a: <span class="tok-type">u64</span>, b: <span class="tok-type">u64</span>) WeakPair {</span>
<span class="line" id="L270"> <span class="tok-kw">var</span> a1: <span class="tok-type">u64</span> = a;</span>
<span class="line" id="L271"> <span class="tok-kw">var</span> b1: <span class="tok-type">u64</span> = b;</span>
<span class="line" id="L272"> a1 +%= w;</span>
<span class="line" id="L273"> b1 = rotr64(b1 +% a1 +% z, <span class="tok-number">21</span>);</span>
<span class="line" id="L274"> <span class="tok-kw">var</span> c: <span class="tok-type">u64</span> = a1;</span>
<span class="line" id="L275"> a1 +%= x;</span>
<span class="line" id="L276"> a1 +%= y;</span>
<span class="line" id="L277"> b1 +%= rotr64(a1, <span class="tok-number">44</span>);</span>
<span class="line" id="L278"> <span class="tok-kw">return</span> WeakPair{ .first = a1 +% z, .second = b1 +% c };</span>
<span class="line" id="L279"> }</span>
<span class="line" id="L280"></span>
<span class="line" id="L281"> <span class="tok-kw">fn</span> <span class="tok-fn">weakHashLen32WithSeeds</span>(ptr: [*]<span class="tok-kw">const</span> <span class="tok-type">u8</span>, a: <span class="tok-type">u64</span>, b: <span class="tok-type">u64</span>) WeakPair {</span>
<span class="line" id="L282"> <span class="tok-kw">return</span> <span class="tok-builtin">@call</span>(.always_inline, weakHashLen32WithSeedsHelper, .{</span>
<span class="line" id="L283"> fetch64(ptr, <span class="tok-number">0</span>),</span>
<span class="line" id="L284"> fetch64(ptr, <span class="tok-number">8</span>),</span>
<span class="line" id="L285"> fetch64(ptr, <span class="tok-number">16</span>),</span>
<span class="line" id="L286"> fetch64(ptr, <span class="tok-number">24</span>),</span>
<span class="line" id="L287"> a,</span>
<span class="line" id="L288"> b,</span>
<span class="line" id="L289"> });</span>
<span class="line" id="L290"> }</span>
<span class="line" id="L291"></span>
<span class="line" id="L292"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hash</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L293"> <span class="tok-kw">if</span> (str.len <= <span class="tok-number">32</span>) {</span>
<span class="line" id="L294"> <span class="tok-kw">if</span> (str.len <= <span class="tok-number">16</span>) {</span>
<span class="line" id="L295"> <span class="tok-kw">return</span> hashLen0To16(str);</span>
<span class="line" id="L296"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L297"> <span class="tok-kw">return</span> hashLen17To32(str);</span>
<span class="line" id="L298"> }</span>
<span class="line" id="L299"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (str.len <= <span class="tok-number">64</span>) {</span>
<span class="line" id="L300"> <span class="tok-kw">return</span> hashLen33To64(str);</span>
<span class="line" id="L301"> }</span>
<span class="line" id="L302"></span>
<span class="line" id="L303"> <span class="tok-kw">var</span> len: <span class="tok-type">u64</span> = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, str.len);</span>
<span class="line" id="L304"></span>
<span class="line" id="L305"> <span class="tok-kw">var</span> x: <span class="tok-type">u64</span> = fetch64(str.ptr, str.len - <span class="tok-number">40</span>);</span>
<span class="line" id="L306"> <span class="tok-kw">var</span> y: <span class="tok-type">u64</span> = fetch64(str.ptr, str.len - <span class="tok-number">16</span>) +% fetch64(str.ptr, str.len - <span class="tok-number">56</span>);</span>
<span class="line" id="L307"> <span class="tok-kw">var</span> z: <span class="tok-type">u64</span> = hashLen16(fetch64(str.ptr, str.len - <span class="tok-number">48</span>) +% len, fetch64(str.ptr, str.len - <span class="tok-number">24</span>));</span>
<span class="line" id="L308"> <span class="tok-kw">var</span> v: WeakPair = weakHashLen32WithSeeds(offsetPtr(str.ptr, str.len - <span class="tok-number">64</span>), len, z);</span>
<span class="line" id="L309"> <span class="tok-kw">var</span> w: WeakPair = weakHashLen32WithSeeds(offsetPtr(str.ptr, str.len - <span class="tok-number">32</span>), y +% k1, x);</span>
<span class="line" id="L310"></span>
<span class="line" id="L311"> x = x *% k1 +% fetch64(str.ptr, <span class="tok-number">0</span>);</span>
<span class="line" id="L312"> len = (len - <span class="tok-number">1</span>) & ~<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@intCast</span>(<span class="tok-number">63</span>));</span>
<span class="line" id="L313"></span>
<span class="line" id="L314"> <span class="tok-kw">var</span> ptr: [*]<span class="tok-kw">const</span> <span class="tok-type">u8</span> = str.ptr;</span>
<span class="line" id="L315"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L316"> x = rotr64(x +% y +% v.first +% fetch64(ptr, <span class="tok-number">8</span>), <span class="tok-number">37</span>) *% k1;</span>
<span class="line" id="L317"> y = rotr64(y +% v.second +% fetch64(ptr, <span class="tok-number">48</span>), <span class="tok-number">42</span>) *% k1;</span>
<span class="line" id="L318"> x ^= w.second;</span>
<span class="line" id="L319"> y +%= v.first +% fetch64(ptr, <span class="tok-number">40</span>);</span>
<span class="line" id="L320"> z = rotr64(z +% w.first, <span class="tok-number">33</span>) *% k1;</span>
<span class="line" id="L321"> v = weakHashLen32WithSeeds(ptr, v.second *% k1, x +% w.first);</span>
<span class="line" id="L322"> w = weakHashLen32WithSeeds(offsetPtr(ptr, <span class="tok-number">32</span>), z +% w.second, y +% fetch64(ptr, <span class="tok-number">16</span>));</span>
<span class="line" id="L323"> <span class="tok-kw">const</span> t: <span class="tok-type">u64</span> = z;</span>
<span class="line" id="L324"> z = x;</span>
<span class="line" id="L325"> x = t;</span>
<span class="line" id="L326"></span>
<span class="line" id="L327"> ptr = offsetPtr(ptr, <span class="tok-number">64</span>);</span>
<span class="line" id="L328"> len -= <span class="tok-number">64</span>;</span>
<span class="line" id="L329"> <span class="tok-kw">if</span> (len == <span class="tok-number">0</span>)</span>
<span class="line" id="L330"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L331"> }</span>
<span class="line" id="L332"></span>
<span class="line" id="L333"> <span class="tok-kw">return</span> hashLen16(hashLen16(v.first, w.first) +% shiftmix(y) *% k1 +% z, hashLen16(v.second, w.second) +% x);</span>
<span class="line" id="L334"> }</span>
<span class="line" id="L335"></span>
<span class="line" id="L336"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashWithSeed</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, seed: <span class="tok-type">u64</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L337"> <span class="tok-kw">return</span> <span class="tok-builtin">@call</span>(.always_inline, Self.hashWithSeeds, .{ str, k2, seed });</span>
<span class="line" id="L338"> }</span>
<span class="line" id="L339"></span>
<span class="line" id="L340"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hashWithSeeds</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, seed0: <span class="tok-type">u64</span>, seed1: <span class="tok-type">u64</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L341"> <span class="tok-kw">return</span> hashLen16(hash(str) -% seed0, seed1);</span>
<span class="line" id="L342"> }</span>
<span class="line" id="L343">};</span>
<span class="line" id="L344"></span>
<span class="line" id="L345"><span class="tok-kw">fn</span> <span class="tok-fn">SMHasherTest</span>(<span class="tok-kw">comptime</span> hash_fn: <span class="tok-kw">anytype</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L346"> <span class="tok-kw">const</span> HashResult = <span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(hash_fn)).Fn.return_type.?;</span>
<span class="line" id="L347"></span>
<span class="line" id="L348"> <span class="tok-kw">var</span> key: [<span class="tok-number">256</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L349"> <span class="tok-kw">var</span> hashes_bytes: [<span class="tok-number">256</span> * <span class="tok-builtin">@sizeOf</span>(HashResult)]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L350"></span>
<span class="line" id="L351"> <span class="tok-builtin">@memset</span>(&key, <span class="tok-number">0</span>);</span>
<span class="line" id="L352"> <span class="tok-builtin">@memset</span>(&hashes_bytes, <span class="tok-number">0</span>);</span>
<span class="line" id="L353"></span>
<span class="line" id="L354"> <span class="tok-kw">var</span> i: <span class="tok-type">u32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L355"> <span class="tok-kw">while</span> (i < <span class="tok-number">256</span>) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L356"> key[i] = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(i));</span>
<span class="line" id="L357"></span>
<span class="line" id="L358"> <span class="tok-kw">var</span> h: HashResult = hash_fn(key[<span class="tok-number">0</span>..i], <span class="tok-number">256</span> - i);</span>
<span class="line" id="L359"></span>
<span class="line" id="L360"> <span class="tok-comment">// comptime can't really do reinterpret casting yet,</span>
</span>
<span class="line" id="L361"> <span class="tok-comment">// so we need to write the bytes manually.</span>
</span>
<span class="line" id="L362"> <span class="tok-kw">for</span> (hashes_bytes[i * <span class="tok-builtin">@sizeOf</span>(HashResult) ..][<span class="tok-number">0</span>..<span class="tok-builtin">@sizeOf</span>(HashResult)]) |*byte| {</span>
<span class="line" id="L363"> byte.* = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(h));</span>
<span class="line" id="L364"> h = h >> <span class="tok-number">8</span>;</span>
<span class="line" id="L365"> }</span>
<span class="line" id="L366"> }</span>
<span class="line" id="L367"></span>
<span class="line" id="L368"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@truncate</span>(hash_fn(&hashes_bytes, <span class="tok-number">0</span>)));</span>
<span class="line" id="L369">}</span>
<span class="line" id="L370"></span>
<span class="line" id="L371"><span class="tok-kw">fn</span> <span class="tok-fn">CityHash32hashIgnoreSeed</span>(str: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, seed: <span class="tok-type">u32</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L372"> _ = seed;</span>
<span class="line" id="L373"> <span class="tok-kw">return</span> CityHash32.hash(str);</span>
<span class="line" id="L374">}</span>
<span class="line" id="L375"></span>
<span class="line" id="L376"><span class="tok-kw">test</span> <span class="tok-str">"cityhash32"</span> {</span>
<span class="line" id="L377"> <span class="tok-kw">const</span> Test = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L378"> <span class="tok-kw">fn</span> <span class="tok-fn">doTest</span>() !<span class="tok-type">void</span> {</span>
<span class="line" id="L379"> <span class="tok-comment">// Note: SMHasher doesn't provide a 32bit version of the algorithm.</span>
</span>
<span class="line" id="L380"> <span class="tok-comment">// Note: The implementation was verified against the Google Abseil version.</span>
</span>
<span class="line" id="L381"> <span class="tok-kw">try</span> std.testing.expectEqual(SMHasherTest(CityHash32hashIgnoreSeed), <span class="tok-number">0x68254F81</span>);</span>
<span class="line" id="L382"> <span class="tok-kw">try</span> std.testing.expectEqual(SMHasherTest(CityHash32hashIgnoreSeed), <span class="tok-number">0x68254F81</span>);</span>
<span class="line" id="L383"> }</span>
<span class="line" id="L384"> };</span>
<span class="line" id="L385"> <span class="tok-kw">try</span> Test.doTest();</span>
<span class="line" id="L386"> <span class="tok-comment">// TODO This is uncommented to prevent OOM on the CI server. Re-enable this test</span>
</span>
<span class="line" id="L387"> <span class="tok-comment">// case once we ship stage2.</span>
</span>
<span class="line" id="L388"> <span class="tok-comment">//@setEvalBranchQuota(50000);</span>
</span>
<span class="line" id="L389"> <span class="tok-comment">//comptime Test.doTest();</span>
</span>
<span class="line" id="L390">}</span>
<span class="line" id="L391"></span>
<span class="line" id="L392"><span class="tok-kw">test</span> <span class="tok-str">"cityhash64"</span> {</span>
<span class="line" id="L393"> <span class="tok-kw">const</span> Test = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L394"> <span class="tok-kw">fn</span> <span class="tok-fn">doTest</span>() !<span class="tok-type">void</span> {</span>
<span class="line" id="L395"> <span class="tok-comment">// Note: This is not compliant with the SMHasher implementation of CityHash64!</span>
</span>
<span class="line" id="L396"> <span class="tok-comment">// Note: The implementation was verified against the Google Abseil version.</span>
</span>
<span class="line" id="L397"> <span class="tok-kw">try</span> std.testing.expectEqual(SMHasherTest(CityHash64.hashWithSeed), <span class="tok-number">0x5FABC5C5</span>);</span>
<span class="line" id="L398"> }</span>
<span class="line" id="L399"> };</span>
<span class="line" id="L400"> <span class="tok-kw">try</span> Test.doTest();</span>
<span class="line" id="L401"> <span class="tok-comment">// TODO This is uncommented to prevent OOM on the CI server. Re-enable this test</span>
</span>
<span class="line" id="L402"> <span class="tok-comment">// case once we ship stage2.</span>
</span>
<span class="line" id="L403"> <span class="tok-comment">//@setEvalBranchQuota(50000);</span>
</span>
<span class="line" id="L404"> <span class="tok-comment">//comptime Test.doTest();</span>
</span>
<span class="line" id="L405">}</span>
<span class="line" id="L406"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/hash/wyhash.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Wyhash = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L4"> <span class="tok-kw">const</span> secret = [_]<span class="tok-type">u64</span>{</span>
<span class="line" id="L5"> <span class="tok-number">0xa0761d6478bd642f</span>,</span>
<span class="line" id="L6"> <span class="tok-number">0xe7037ed1a0b428db</span>,</span>
<span class="line" id="L7"> <span class="tok-number">0x8ebc6af09c88c6e3</span>,</span>
<span class="line" id="L8"> <span class="tok-number">0x589965cc75374cc3</span>,</span>
<span class="line" id="L9"> };</span>
<span class="line" id="L10"></span>
<span class="line" id="L11"> a: <span class="tok-type">u64</span>,</span>
<span class="line" id="L12"> b: <span class="tok-type">u64</span>,</span>
<span class="line" id="L13"> state: [<span class="tok-number">3</span>]<span class="tok-type">u64</span>,</span>
<span class="line" id="L14"> total_len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L15"></span>
<span class="line" id="L16"> buf: [<span class="tok-number">48</span>]<span class="tok-type">u8</span>,</span>
<span class="line" id="L17"> buf_len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L18"></span>
<span class="line" id="L19"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(seed: <span class="tok-type">u64</span>) Wyhash {</span>
<span class="line" id="L20"> <span class="tok-kw">var</span> self = Wyhash{</span>
<span class="line" id="L21"> .a = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L22"> .b = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L23"> .state = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L24"> .total_len = <span class="tok-number">0</span>,</span>
<span class="line" id="L25"> .buf = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L26"> .buf_len = <span class="tok-number">0</span>,</span>
<span class="line" id="L27"> };</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"> self.state[<span class="tok-number">0</span>] = seed ^ mix(seed ^ secret[<span class="tok-number">0</span>], secret[<span class="tok-number">1</span>]);</span>
<span class="line" id="L30"> self.state[<span class="tok-number">1</span>] = self.state[<span class="tok-number">0</span>];</span>
<span class="line" id="L31"> self.state[<span class="tok-number">2</span>] = self.state[<span class="tok-number">0</span>];</span>
<span class="line" id="L32"> <span class="tok-kw">return</span> self;</span>
<span class="line" id="L33"> }</span>
<span class="line" id="L34"></span>
<span class="line" id="L35"> <span class="tok-comment">// This is subtly different from other hash function update calls. Wyhash requires the last</span>
</span>
<span class="line" id="L36"> <span class="tok-comment">// full 48-byte block to be run through final1 if is exactly aligned to 48-bytes.</span>
</span>
<span class="line" id="L37"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">update</span>(self: *Wyhash, input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L38"> self.total_len += input.len;</span>
<span class="line" id="L39"></span>
<span class="line" id="L40"> <span class="tok-kw">if</span> (input.len <= <span class="tok-number">48</span> - self.buf_len) {</span>
<span class="line" id="L41"> <span class="tok-builtin">@memcpy</span>(self.buf[self.buf_len..][<span class="tok-number">0</span>..input.len], input);</span>
<span class="line" id="L42"> self.buf_len += input.len;</span>
<span class="line" id="L43"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L44"> }</span>
<span class="line" id="L45"></span>
<span class="line" id="L46"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L47"></span>
<span class="line" id="L48"> <span class="tok-kw">if</span> (self.buf_len > <span class="tok-number">0</span>) {</span>
<span class="line" id="L49"> i = <span class="tok-number">48</span> - self.buf_len;</span>
<span class="line" id="L50"> <span class="tok-builtin">@memcpy</span>(self.buf[self.buf_len..][<span class="tok-number">0</span>..i], input[<span class="tok-number">0</span>..i]);</span>
<span class="line" id="L51"> self.round(&self.buf);</span>
<span class="line" id="L52"> self.buf_len = <span class="tok-number">0</span>;</span>
<span class="line" id="L53"> }</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"> <span class="tok-kw">while</span> (i + <span class="tok-number">48</span> < input.len) : (i += <span class="tok-number">48</span>) {</span>
<span class="line" id="L56"> self.round(input[i..][<span class="tok-number">0</span>..<span class="tok-number">48</span>]);</span>
<span class="line" id="L57"> }</span>
<span class="line" id="L58"></span>
<span class="line" id="L59"> <span class="tok-kw">const</span> remaining_bytes = input[i..];</span>
<span class="line" id="L60"> <span class="tok-builtin">@memcpy</span>(self.buf[<span class="tok-number">0</span>..remaining_bytes.len], remaining_bytes);</span>
<span class="line" id="L61"> self.buf_len = remaining_bytes.len;</span>
<span class="line" id="L62"> }</span>
<span class="line" id="L63"></span>
<span class="line" id="L64"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">final</span>(self: *Wyhash) <span class="tok-type">u64</span> {</span>
<span class="line" id="L65"> <span class="tok-kw">var</span> input = self.buf[<span class="tok-number">0</span>..self.buf_len];</span>
<span class="line" id="L66"> <span class="tok-kw">var</span> newSelf = self.shallowCopy(); <span class="tok-comment">// ensure idempotency</span>
</span>
<span class="line" id="L67"></span>
<span class="line" id="L68"> <span class="tok-kw">if</span> (self.total_len <= <span class="tok-number">16</span>) {</span>
<span class="line" id="L69"> newSelf.smallKey(input);</span>
<span class="line" id="L70"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L71"> <span class="tok-kw">var</span> offset: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L72"> <span class="tok-kw">if</span> (self.buf_len < <span class="tok-number">16</span>) {</span>
<span class="line" id="L73"> <span class="tok-kw">var</span> scratch: [<span class="tok-number">16</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L74"> <span class="tok-kw">const</span> rem = <span class="tok-number">16</span> - self.buf_len;</span>
<span class="line" id="L75"> <span class="tok-builtin">@memcpy</span>(scratch[<span class="tok-number">0</span>..rem], self.buf[self.buf.len - rem ..][<span class="tok-number">0</span>..rem]);</span>
<span class="line" id="L76"> <span class="tok-builtin">@memcpy</span>(scratch[rem..][<span class="tok-number">0</span>..self.buf_len], self.buf[<span class="tok-number">0</span>..self.buf_len]);</span>
<span class="line" id="L77"></span>
<span class="line" id="L78"> <span class="tok-comment">// Same as input but with additional bytes preceeding start in case of a short buffer</span>
</span>
<span class="line" id="L79"> input = &scratch;</span>
<span class="line" id="L80"> offset = rem;</span>
<span class="line" id="L81"> }</span>
<span class="line" id="L82"></span>
<span class="line" id="L83"> newSelf.final0();</span>
<span class="line" id="L84"> newSelf.final1(input, offset);</span>
<span class="line" id="L85"> }</span>
<span class="line" id="L86"></span>
<span class="line" id="L87"> <span class="tok-kw">return</span> newSelf.final2();</span>
<span class="line" id="L88"> }</span>
<span class="line" id="L89"></span>
<span class="line" id="L90"> <span class="tok-comment">// Copies the core wyhash state but not any internal buffers.</span>
</span>
<span class="line" id="L91"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">shallowCopy</span>(self: *Wyhash) Wyhash {</span>
<span class="line" id="L92"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L93"> .a = self.a,</span>
<span class="line" id="L94"> .b = self.b,</span>
<span class="line" id="L95"> .state = self.state,</span>
<span class="line" id="L96"> .total_len = self.total_len,</span>
<span class="line" id="L97"> .buf = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L98"> .buf_len = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L99"> };</span>
<span class="line" id="L100"> }</span>
<span class="line" id="L101"></span>
<span class="line" id="L102"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">smallKey</span>(self: *Wyhash, input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L103"> std.debug.assert(input.len <= <span class="tok-number">16</span>);</span>
<span class="line" id="L104"></span>
<span class="line" id="L105"> <span class="tok-kw">if</span> (input.len >= <span class="tok-number">4</span>) {</span>
<span class="line" id="L106"> <span class="tok-kw">const</span> end = input.len - <span class="tok-number">4</span>;</span>
<span class="line" id="L107"> <span class="tok-kw">const</span> quarter = (input.len >> <span class="tok-number">3</span>) << <span class="tok-number">2</span>;</span>
<span class="line" id="L108"> self.a = (read(<span class="tok-number">4</span>, input[<span class="tok-number">0</span>..]) << <span class="tok-number">32</span>) | read(<span class="tok-number">4</span>, input[quarter..]);</span>
<span class="line" id="L109"> self.b = (read(<span class="tok-number">4</span>, input[end..]) << <span class="tok-number">32</span>) | read(<span class="tok-number">4</span>, input[end - quarter ..]);</span>
<span class="line" id="L110"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (input.len > <span class="tok-number">0</span>) {</span>
<span class="line" id="L111"> self.a = (<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, input[<span class="tok-number">0</span>]) << <span class="tok-number">16</span>) | (<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, input[input.len >> <span class="tok-number">1</span>]) << <span class="tok-number">8</span>) | input[input.len - <span class="tok-number">1</span>];</span>
<span class="line" id="L112"> self.b = <span class="tok-number">0</span>;</span>
<span class="line" id="L113"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L114"> self.a = <span class="tok-number">0</span>;</span>
<span class="line" id="L115"> self.b = <span class="tok-number">0</span>;</span>
<span class="line" id="L116"> }</span>
<span class="line" id="L117"> }</span>
<span class="line" id="L118"></span>
<span class="line" id="L119"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">round</span>(self: *Wyhash, input: *<span class="tok-kw">const</span> [<span class="tok-number">48</span>]<span class="tok-type">u8</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L120"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..<span class="tok-number">3</span>) |i| {</span>
<span class="line" id="L121"> <span class="tok-kw">const</span> a = read(<span class="tok-number">8</span>, input[<span class="tok-number">8</span> * (<span class="tok-number">2</span> * i) ..]);</span>
<span class="line" id="L122"> <span class="tok-kw">const</span> b = read(<span class="tok-number">8</span>, input[<span class="tok-number">8</span> * (<span class="tok-number">2</span> * i + <span class="tok-number">1</span>) ..]);</span>
<span class="line" id="L123"> self.state[i] = mix(a ^ secret[i + <span class="tok-number">1</span>], b ^ self.state[i]);</span>
<span class="line" id="L124"> }</span>
<span class="line" id="L125"> }</span>
<span class="line" id="L126"></span>
<span class="line" id="L127"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">read</span>(<span class="tok-kw">comptime</span> bytes: <span class="tok-type">usize</span>, data: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L128"> std.debug.assert(bytes <= <span class="tok-number">8</span>);</span>
<span class="line" id="L129"> <span class="tok-kw">const</span> T = std.meta.Int(.unsigned, <span class="tok-number">8</span> * bytes);</span>
<span class="line" id="L130"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, std.mem.readIntLittle(T, data[<span class="tok-number">0</span>..bytes]));</span>
<span class="line" id="L131"> }</span>
<span class="line" id="L132"></span>
<span class="line" id="L133"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">mum</span>(a: *<span class="tok-type">u64</span>, b: *<span class="tok-type">u64</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L134"> <span class="tok-kw">const</span> x = <span class="tok-builtin">@as</span>(<span class="tok-type">u128</span>, a.*) *% b.*;</span>
<span class="line" id="L135"> a.* = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@truncate</span>(x));</span>
<span class="line" id="L136"> b.* = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-builtin">@truncate</span>(x >> <span class="tok-number">64</span>));</span>
<span class="line" id="L137"> }</span>
<span class="line" id="L138"></span>
<span class="line" id="L139"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">mix</span>(a_: <span class="tok-type">u64</span>, b_: <span class="tok-type">u64</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L140"> <span class="tok-kw">var</span> a = a_;</span>
<span class="line" id="L141"> <span class="tok-kw">var</span> b = b_;</span>
<span class="line" id="L142"> mum(&a, &b);</span>
<span class="line" id="L143"> <span class="tok-kw">return</span> a ^ b;</span>
<span class="line" id="L144"> }</span>
<span class="line" id="L145"></span>
<span class="line" id="L146"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">final0</span>(self: *Wyhash) <span class="tok-type">void</span> {</span>
<span class="line" id="L147"> self.state[<span class="tok-number">0</span>] ^= self.state[<span class="tok-number">1</span>] ^ self.state[<span class="tok-number">2</span>];</span>
<span class="line" id="L148"> }</span>
<span class="line" id="L149"></span>
<span class="line" id="L150"> <span class="tok-comment">// input_lb must be at least 16-bytes long (in shorter key cases the smallKey function will be</span>
</span>
<span class="line" id="L151"> <span class="tok-comment">// used instead). We use an index into a slice to for comptime processing as opposed to if we</span>
</span>
<span class="line" id="L152"> <span class="tok-comment">// used pointers.</span>
</span>
<span class="line" id="L153"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">final1</span>(self: *Wyhash, input_lb: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, start_pos: <span class="tok-type">usize</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L154"> std.debug.assert(input_lb.len >= <span class="tok-number">16</span>);</span>
<span class="line" id="L155"> std.debug.assert(input_lb.len - start_pos <= <span class="tok-number">48</span>);</span>
<span class="line" id="L156"> <span class="tok-kw">const</span> input = input_lb[start_pos..];</span>
<span class="line" id="L157"></span>
<span class="line" id="L158"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L159"> <span class="tok-kw">while</span> (i + <span class="tok-number">16</span> < input.len) : (i += <span class="tok-number">16</span>) {</span>
<span class="line" id="L160"> self.state[<span class="tok-number">0</span>] = mix(read(<span class="tok-number">8</span>, input[i..]) ^ secret[<span class="tok-number">1</span>], read(<span class="tok-number">8</span>, input[i + <span class="tok-number">8</span> ..]) ^ self.state[<span class="tok-number">0</span>]);</span>
<span class="line" id="L161"> }</span>
<span class="line" id="L162"></span>
<span class="line" id="L163"> self.a = read(<span class="tok-number">8</span>, input_lb[input_lb.len - <span class="tok-number">16</span> ..][<span class="tok-number">0</span>..<span class="tok-number">8</span>]);</span>
<span class="line" id="L164"> self.b = read(<span class="tok-number">8</span>, input_lb[input_lb.len - <span class="tok-number">8</span> ..][<span class="tok-number">0</span>..<span class="tok-number">8</span>]);</span>
<span class="line" id="L165"> }</span>
<span class="line" id="L166"></span>
<span class="line" id="L167"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">final2</span>(self: *Wyhash) <span class="tok-type">u64</span> {</span>
<span class="line" id="L168"> self.a ^= secret[<span class="tok-number">1</span>];</span>
<span class="line" id="L169"> self.b ^= self.state[<span class="tok-number">0</span>];</span>
<span class="line" id="L170"> mum(&self.a, &self.b);</span>
<span class="line" id="L171"> <span class="tok-kw">return</span> mix(self.a ^ secret[<span class="tok-number">0</span>] ^ self.total_len, self.b ^ secret[<span class="tok-number">1</span>]);</span>
<span class="line" id="L172"> }</span>
<span class="line" id="L173"></span>
<span class="line" id="L174"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">hash</span>(seed: <span class="tok-type">u64</span>, input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L175"> <span class="tok-kw">var</span> self = Wyhash.init(seed);</span>
<span class="line" id="L176"></span>
<span class="line" id="L177"> <span class="tok-kw">if</span> (input.len <= <span class="tok-number">16</span>) {</span>
<span class="line" id="L178"> self.smallKey(input);</span>
<span class="line" id="L179"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L180"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L181"> <span class="tok-kw">if</span> (input.len >= <span class="tok-number">48</span>) {</span>
<span class="line" id="L182"> <span class="tok-kw">while</span> (i + <span class="tok-number">48</span> < input.len) : (i += <span class="tok-number">48</span>) {</span>
<span class="line" id="L183"> self.round(input[i..][<span class="tok-number">0</span>..<span class="tok-number">48</span>]);</span>
<span class="line" id="L184"> }</span>
<span class="line" id="L185"> self.final0();</span>
<span class="line" id="L186"> }</span>
<span class="line" id="L187"> self.final1(input, i);</span>
<span class="line" id="L188"> }</span>
<span class="line" id="L189"></span>
<span class="line" id="L190"> self.total_len = input.len;</span>
<span class="line" id="L191"> <span class="tok-kw">return</span> self.final2();</span>
<span class="line" id="L192"> }</span>
<span class="line" id="L193">};</span>
<span class="line" id="L194"></span>
<span class="line" id="L195"><span class="tok-kw">const</span> expectEqual = std.testing.expectEqual;</span>
<span class="line" id="L196"></span>
<span class="line" id="L197"><span class="tok-kw">const</span> TestVector = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L198"> expected: <span class="tok-type">u64</span>,</span>
<span class="line" id="L199"> seed: <span class="tok-type">u64</span>,</span>
<span class="line" id="L200"> input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L201">};</span>
<span class="line" id="L202"></span>
<span class="line" id="L203"><span class="tok-comment">// Run https://github.com/wangyi-fudan/wyhash/blob/77e50f267fbc7b8e2d09f2d455219adb70ad4749/test_vector.cpp directly.</span>
</span>
<span class="line" id="L204"><span class="tok-kw">const</span> vectors = [_]TestVector{</span>
<span class="line" id="L205"> .{ .seed = <span class="tok-number">0</span>, .expected = <span class="tok-number">0x409638ee2bde459</span>, .input = <span class="tok-str">""</span> },</span>
<span class="line" id="L206"> .{ .seed = <span class="tok-number">1</span>, .expected = <span class="tok-number">0xa8412d091b5fe0a9</span>, .input = <span class="tok-str">"a"</span> },</span>
<span class="line" id="L207"> .{ .seed = <span class="tok-number">2</span>, .expected = <span class="tok-number">0x32dd92e4b2915153</span>, .input = <span class="tok-str">"abc"</span> },</span>
<span class="line" id="L208"> .{ .seed = <span class="tok-number">3</span>, .expected = <span class="tok-number">0x8619124089a3a16b</span>, .input = <span class="tok-str">"message digest"</span> },</span>
<span class="line" id="L209"> .{ .seed = <span class="tok-number">4</span>, .expected = <span class="tok-number">0x7a43afb61d7f5f40</span>, .input = <span class="tok-str">"abcdefghijklmnopqrstuvwxyz"</span> },</span>
<span class="line" id="L210"> .{ .seed = <span class="tok-number">5</span>, .expected = <span class="tok-number">0xff42329b90e50d58</span>, .input = <span class="tok-str">"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"</span> },</span>
<span class="line" id="L211"> .{ .seed = <span class="tok-number">6</span>, .expected = <span class="tok-number">0xc39cab13b115aad3</span>, .input = <span class="tok-str">"12345678901234567890123456789012345678901234567890123456789012345678901234567890"</span> },</span>
<span class="line" id="L212">};</span>
<span class="line" id="L213"></span>
<span class="line" id="L214"><span class="tok-kw">test</span> <span class="tok-str">"test vectors"</span> {</span>
<span class="line" id="L215"> <span class="tok-kw">for</span> (vectors) |e| {</span>
<span class="line" id="L216"> <span class="tok-kw">try</span> expectEqual(e.expected, Wyhash.hash(e.seed, e.input));</span>
<span class="line" id="L217"> }</span>
<span class="line" id="L218">}</span>
<span class="line" id="L219"></span>
<span class="line" id="L220"><span class="tok-kw">test</span> <span class="tok-str">"test vectors at comptime"</span> {</span>
<span class="line" id="L221"> <span class="tok-kw">comptime</span> {</span>
<span class="line" id="L222"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (vectors) |e| {</span>
<span class="line" id="L223"> <span class="tok-kw">try</span> expectEqual(e.expected, Wyhash.hash(e.seed, e.input));</span>
<span class="line" id="L224"> }</span>
<span class="line" id="L225"> }</span>
<span class="line" id="L226">}</span>
<span class="line" id="L227"></span>
<span class="line" id="L228"><span class="tok-kw">test</span> <span class="tok-str">"test vectors streaming"</span> {</span>
<span class="line" id="L229"> <span class="tok-kw">const</span> step = <span class="tok-number">5</span>;</span>
<span class="line" id="L230"></span>
<span class="line" id="L231"> <span class="tok-kw">for</span> (vectors) |e| {</span>
<span class="line" id="L232"> <span class="tok-kw">var</span> wh = Wyhash.init(e.seed);</span>
<span class="line" id="L233"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L234"> <span class="tok-kw">while</span> (i < e.input.len) : (i += step) {</span>
<span class="line" id="L235"> <span class="tok-kw">const</span> len = <span class="tok-kw">if</span> (i + step > e.input.len) e.input.len - i <span class="tok-kw">else</span> step;</span>
<span class="line" id="L236"> wh.update(e.input[i..][<span class="tok-number">0</span>..len]);</span>
<span class="line" id="L237"> }</span>
<span class="line" id="L238"> <span class="tok-kw">try</span> expectEqual(e.expected, wh.final());</span>
<span class="line" id="L239"> }</span>
<span class="line" id="L240">}</span>
<span class="line" id="L241"></span>
<span class="line" id="L242"><span class="tok-kw">test</span> <span class="tok-str">"test ensure idempotent final call"</span> {</span>
<span class="line" id="L243"> <span class="tok-kw">const</span> e: TestVector = .{ .seed = <span class="tok-number">6</span>, .expected = <span class="tok-number">0xc39cab13b115aad3</span>, .input = <span class="tok-str">"12345678901234567890123456789012345678901234567890123456789012345678901234567890"</span> };</span>
<span class="line" id="L244"> <span class="tok-kw">var</span> wh = Wyhash.init(e.seed);</span>
<span class="line" id="L245"> wh.update(e.input);</span>
<span class="line" id="L246"></span>
<span class="line" id="L247"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..<span class="tok-number">10</span>) |_| {</span>
<span class="line" id="L248"> <span class="tok-kw">try</span> expectEqual(e.expected, wh.final());</span>
<span class="line" id="L249"> }</span>
<span class="line" id="L250">}</span>
<span class="line" id="L251"></span>
<span class="line" id="L252"><span class="tok-kw">test</span> <span class="tok-str">"iterative non-divisible update"</span> {</span>
<span class="line" id="L253"> <span class="tok-kw">var</span> buf: [<span class="tok-number">8192</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L254"> <span class="tok-kw">for</span> (&buf, <span class="tok-number">0</span>..) |*e, i| {</span>
<span class="line" id="L255"> e.* = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(i));</span>
<span class="line" id="L256"> }</span>
<span class="line" id="L257"></span>
<span class="line" id="L258"> <span class="tok-kw">const</span> seed = <span class="tok-number">0x128dad08f</span>;</span>
<span class="line" id="L259"></span>
<span class="line" id="L260"> <span class="tok-kw">var</span> end: <span class="tok-type">usize</span> = <span class="tok-number">32</span>;</span>
<span class="line" id="L261"> <span class="tok-kw">while</span> (end < buf.len) : (end += <span class="tok-number">32</span>) {</span>
<span class="line" id="L262"> <span class="tok-kw">const</span> non_iterative_hash = Wyhash.hash(seed, buf[<span class="tok-number">0</span>..end]);</span>
<span class="line" id="L263"></span>
<span class="line" id="L264"> <span class="tok-kw">var</span> wy = Wyhash.init(seed);</span>
<span class="line" id="L265"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L266"> <span class="tok-kw">while</span> (i < end) : (i += <span class="tok-number">33</span>) {</span>
<span class="line" id="L267"> wy.update(buf[i..<span class="tok-builtin">@min</span>(i + <span class="tok-number">33</span>, end)]);</span>
<span class="line" id="L268"> }</span>
<span class="line" id="L269"> <span class="tok-kw">const</span> iterative_hash = wy.final();</span>
<span class="line" id="L270"></span>
<span class="line" id="L271"> <span class="tok-kw">try</span> std.testing.expectEqual(iterative_hash, non_iterative_hash);</span>
<span class="line" id="L272"> }</span>
<span class="line" id="L273">}</span>
<span class="line" id="L274"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/hash | repos/yazap/docs/src/std/hash/crc/catalog.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! This file is auto-generated by tools/update_crc_catalog.zig.</span></span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-kw">const</span> Crc = <span class="tok-builtin">@import</span>(<span class="tok-str">"../crc.zig"</span>).Crc;</span>
<span class="line" id="L4"></span>
<span class="line" id="L5"><span class="tok-kw">test</span> {</span>
<span class="line" id="L6"> _ = <span class="tok-builtin">@import</span>(<span class="tok-str">"catalog_test.zig"</span>);</span>
<span class="line" id="L7">}</span>
<span class="line" id="L8"></span>
<span class="line" id="L9"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc3Gsm = Crc(<span class="tok-type">u3</span>, .{</span>
<span class="line" id="L10"> .polynomial = <span class="tok-number">0x3</span>,</span>
<span class="line" id="L11"> .initial = <span class="tok-number">0x0</span>,</span>
<span class="line" id="L12"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L13"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L14"> .xor_output = <span class="tok-number">0x7</span>,</span>
<span class="line" id="L15">});</span>
<span class="line" id="L16"></span>
<span class="line" id="L17"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc3Rohc = Crc(<span class="tok-type">u3</span>, .{</span>
<span class="line" id="L18"> .polynomial = <span class="tok-number">0x3</span>,</span>
<span class="line" id="L19"> .initial = <span class="tok-number">0x7</span>,</span>
<span class="line" id="L20"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L21"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L22"> .xor_output = <span class="tok-number">0x0</span>,</span>
<span class="line" id="L23">});</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc4G704 = Crc(<span class="tok-type">u4</span>, .{</span>
<span class="line" id="L26"> .polynomial = <span class="tok-number">0x3</span>,</span>
<span class="line" id="L27"> .initial = <span class="tok-number">0x0</span>,</span>
<span class="line" id="L28"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L29"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L30"> .xor_output = <span class="tok-number">0x0</span>,</span>
<span class="line" id="L31">});</span>
<span class="line" id="L32"></span>
<span class="line" id="L33"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc4Interlaken = Crc(<span class="tok-type">u4</span>, .{</span>
<span class="line" id="L34"> .polynomial = <span class="tok-number">0x3</span>,</span>
<span class="line" id="L35"> .initial = <span class="tok-number">0xf</span>,</span>
<span class="line" id="L36"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L37"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L38"> .xor_output = <span class="tok-number">0xf</span>,</span>
<span class="line" id="L39">});</span>
<span class="line" id="L40"></span>
<span class="line" id="L41"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc5EpcC1g2 = Crc(<span class="tok-type">u5</span>, .{</span>
<span class="line" id="L42"> .polynomial = <span class="tok-number">0x09</span>,</span>
<span class="line" id="L43"> .initial = <span class="tok-number">0x09</span>,</span>
<span class="line" id="L44"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L45"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L46"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L47">});</span>
<span class="line" id="L48"></span>
<span class="line" id="L49"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc5G704 = Crc(<span class="tok-type">u5</span>, .{</span>
<span class="line" id="L50"> .polynomial = <span class="tok-number">0x15</span>,</span>
<span class="line" id="L51"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L52"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L53"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L54"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L55">});</span>
<span class="line" id="L56"></span>
<span class="line" id="L57"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc5Usb = Crc(<span class="tok-type">u5</span>, .{</span>
<span class="line" id="L58"> .polynomial = <span class="tok-number">0x05</span>,</span>
<span class="line" id="L59"> .initial = <span class="tok-number">0x1f</span>,</span>
<span class="line" id="L60"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L61"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L62"> .xor_output = <span class="tok-number">0x1f</span>,</span>
<span class="line" id="L63">});</span>
<span class="line" id="L64"></span>
<span class="line" id="L65"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc6Cdma2000A = Crc(<span class="tok-type">u6</span>, .{</span>
<span class="line" id="L66"> .polynomial = <span class="tok-number">0x27</span>,</span>
<span class="line" id="L67"> .initial = <span class="tok-number">0x3f</span>,</span>
<span class="line" id="L68"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L69"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L70"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L71">});</span>
<span class="line" id="L72"></span>
<span class="line" id="L73"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc6Cdma2000B = Crc(<span class="tok-type">u6</span>, .{</span>
<span class="line" id="L74"> .polynomial = <span class="tok-number">0x07</span>,</span>
<span class="line" id="L75"> .initial = <span class="tok-number">0x3f</span>,</span>
<span class="line" id="L76"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L77"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L78"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L79">});</span>
<span class="line" id="L80"></span>
<span class="line" id="L81"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc6Darc = Crc(<span class="tok-type">u6</span>, .{</span>
<span class="line" id="L82"> .polynomial = <span class="tok-number">0x19</span>,</span>
<span class="line" id="L83"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L84"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L85"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L86"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L87">});</span>
<span class="line" id="L88"></span>
<span class="line" id="L89"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc6G704 = Crc(<span class="tok-type">u6</span>, .{</span>
<span class="line" id="L90"> .polynomial = <span class="tok-number">0x03</span>,</span>
<span class="line" id="L91"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L92"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L93"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L94"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L95">});</span>
<span class="line" id="L96"></span>
<span class="line" id="L97"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc6Gsm = Crc(<span class="tok-type">u6</span>, .{</span>
<span class="line" id="L98"> .polynomial = <span class="tok-number">0x2f</span>,</span>
<span class="line" id="L99"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L100"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L101"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L102"> .xor_output = <span class="tok-number">0x3f</span>,</span>
<span class="line" id="L103">});</span>
<span class="line" id="L104"></span>
<span class="line" id="L105"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc7Mmc = Crc(<span class="tok-type">u7</span>, .{</span>
<span class="line" id="L106"> .polynomial = <span class="tok-number">0x09</span>,</span>
<span class="line" id="L107"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L108"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L109"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L110"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L111">});</span>
<span class="line" id="L112"></span>
<span class="line" id="L113"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc7Rohc = Crc(<span class="tok-type">u7</span>, .{</span>
<span class="line" id="L114"> .polynomial = <span class="tok-number">0x4f</span>,</span>
<span class="line" id="L115"> .initial = <span class="tok-number">0x7f</span>,</span>
<span class="line" id="L116"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L117"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L118"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L119">});</span>
<span class="line" id="L120"></span>
<span class="line" id="L121"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc7Umts = Crc(<span class="tok-type">u7</span>, .{</span>
<span class="line" id="L122"> .polynomial = <span class="tok-number">0x45</span>,</span>
<span class="line" id="L123"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L124"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L125"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L126"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L127">});</span>
<span class="line" id="L128"></span>
<span class="line" id="L129"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8Autosar = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L130"> .polynomial = <span class="tok-number">0x2f</span>,</span>
<span class="line" id="L131"> .initial = <span class="tok-number">0xff</span>,</span>
<span class="line" id="L132"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L133"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L134"> .xor_output = <span class="tok-number">0xff</span>,</span>
<span class="line" id="L135">});</span>
<span class="line" id="L136"></span>
<span class="line" id="L137"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8Bluetooth = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L138"> .polynomial = <span class="tok-number">0xa7</span>,</span>
<span class="line" id="L139"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L140"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L141"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L142"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L143">});</span>
<span class="line" id="L144"></span>
<span class="line" id="L145"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8Cdma2000 = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L146"> .polynomial = <span class="tok-number">0x9b</span>,</span>
<span class="line" id="L147"> .initial = <span class="tok-number">0xff</span>,</span>
<span class="line" id="L148"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L149"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L150"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L151">});</span>
<span class="line" id="L152"></span>
<span class="line" id="L153"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8Darc = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L154"> .polynomial = <span class="tok-number">0x39</span>,</span>
<span class="line" id="L155"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L156"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L157"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L158"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L159">});</span>
<span class="line" id="L160"></span>
<span class="line" id="L161"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8DvbS2 = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L162"> .polynomial = <span class="tok-number">0xd5</span>,</span>
<span class="line" id="L163"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L164"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L165"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L166"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L167">});</span>
<span class="line" id="L168"></span>
<span class="line" id="L169"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8GsmA = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L170"> .polynomial = <span class="tok-number">0x1d</span>,</span>
<span class="line" id="L171"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L172"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L173"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L174"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L175">});</span>
<span class="line" id="L176"></span>
<span class="line" id="L177"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8GsmB = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L178"> .polynomial = <span class="tok-number">0x49</span>,</span>
<span class="line" id="L179"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L180"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L181"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L182"> .xor_output = <span class="tok-number">0xff</span>,</span>
<span class="line" id="L183">});</span>
<span class="line" id="L184"></span>
<span class="line" id="L185"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8Hitag = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L186"> .polynomial = <span class="tok-number">0x1d</span>,</span>
<span class="line" id="L187"> .initial = <span class="tok-number">0xff</span>,</span>
<span class="line" id="L188"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L189"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L190"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L191">});</span>
<span class="line" id="L192"></span>
<span class="line" id="L193"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8I4321 = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L194"> .polynomial = <span class="tok-number">0x07</span>,</span>
<span class="line" id="L195"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L196"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L197"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L198"> .xor_output = <span class="tok-number">0x55</span>,</span>
<span class="line" id="L199">});</span>
<span class="line" id="L200"></span>
<span class="line" id="L201"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8ICode = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L202"> .polynomial = <span class="tok-number">0x1d</span>,</span>
<span class="line" id="L203"> .initial = <span class="tok-number">0xfd</span>,</span>
<span class="line" id="L204"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L205"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L206"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L207">});</span>
<span class="line" id="L208"></span>
<span class="line" id="L209"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8Lte = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L210"> .polynomial = <span class="tok-number">0x9b</span>,</span>
<span class="line" id="L211"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L212"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L213"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L214"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L215">});</span>
<span class="line" id="L216"></span>
<span class="line" id="L217"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8MaximDow = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L218"> .polynomial = <span class="tok-number">0x31</span>,</span>
<span class="line" id="L219"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L220"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L221"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L222"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L223">});</span>
<span class="line" id="L224"></span>
<span class="line" id="L225"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8MifareMad = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L226"> .polynomial = <span class="tok-number">0x1d</span>,</span>
<span class="line" id="L227"> .initial = <span class="tok-number">0xc7</span>,</span>
<span class="line" id="L228"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L229"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L230"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L231">});</span>
<span class="line" id="L232"></span>
<span class="line" id="L233"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8Nrsc5 = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L234"> .polynomial = <span class="tok-number">0x31</span>,</span>
<span class="line" id="L235"> .initial = <span class="tok-number">0xff</span>,</span>
<span class="line" id="L236"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L237"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L238"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L239">});</span>
<span class="line" id="L240"></span>
<span class="line" id="L241"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8Opensafety = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L242"> .polynomial = <span class="tok-number">0x2f</span>,</span>
<span class="line" id="L243"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L244"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L245"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L246"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L247">});</span>
<span class="line" id="L248"></span>
<span class="line" id="L249"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8Rohc = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L250"> .polynomial = <span class="tok-number">0x07</span>,</span>
<span class="line" id="L251"> .initial = <span class="tok-number">0xff</span>,</span>
<span class="line" id="L252"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L253"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L254"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L255">});</span>
<span class="line" id="L256"></span>
<span class="line" id="L257"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8SaeJ1850 = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L258"> .polynomial = <span class="tok-number">0x1d</span>,</span>
<span class="line" id="L259"> .initial = <span class="tok-number">0xff</span>,</span>
<span class="line" id="L260"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L261"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L262"> .xor_output = <span class="tok-number">0xff</span>,</span>
<span class="line" id="L263">});</span>
<span class="line" id="L264"></span>
<span class="line" id="L265"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8Smbus = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L266"> .polynomial = <span class="tok-number">0x07</span>,</span>
<span class="line" id="L267"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L268"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L269"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L270"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L271">});</span>
<span class="line" id="L272"></span>
<span class="line" id="L273"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8Tech3250 = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L274"> .polynomial = <span class="tok-number">0x1d</span>,</span>
<span class="line" id="L275"> .initial = <span class="tok-number">0xff</span>,</span>
<span class="line" id="L276"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L277"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L278"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L279">});</span>
<span class="line" id="L280"></span>
<span class="line" id="L281"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc8Wcdma = Crc(<span class="tok-type">u8</span>, .{</span>
<span class="line" id="L282"> .polynomial = <span class="tok-number">0x9b</span>,</span>
<span class="line" id="L283"> .initial = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L284"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L285"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L286"> .xor_output = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L287">});</span>
<span class="line" id="L288"></span>
<span class="line" id="L289"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc10Atm = Crc(<span class="tok-type">u10</span>, .{</span>
<span class="line" id="L290"> .polynomial = <span class="tok-number">0x233</span>,</span>
<span class="line" id="L291"> .initial = <span class="tok-number">0x000</span>,</span>
<span class="line" id="L292"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L293"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L294"> .xor_output = <span class="tok-number">0x000</span>,</span>
<span class="line" id="L295">});</span>
<span class="line" id="L296"></span>
<span class="line" id="L297"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc10Cdma2000 = Crc(<span class="tok-type">u10</span>, .{</span>
<span class="line" id="L298"> .polynomial = <span class="tok-number">0x3d9</span>,</span>
<span class="line" id="L299"> .initial = <span class="tok-number">0x3ff</span>,</span>
<span class="line" id="L300"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L301"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L302"> .xor_output = <span class="tok-number">0x000</span>,</span>
<span class="line" id="L303">});</span>
<span class="line" id="L304"></span>
<span class="line" id="L305"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc10Gsm = Crc(<span class="tok-type">u10</span>, .{</span>
<span class="line" id="L306"> .polynomial = <span class="tok-number">0x175</span>,</span>
<span class="line" id="L307"> .initial = <span class="tok-number">0x000</span>,</span>
<span class="line" id="L308"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L309"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L310"> .xor_output = <span class="tok-number">0x3ff</span>,</span>
<span class="line" id="L311">});</span>
<span class="line" id="L312"></span>
<span class="line" id="L313"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc11Flexray = Crc(<span class="tok-type">u11</span>, .{</span>
<span class="line" id="L314"> .polynomial = <span class="tok-number">0x385</span>,</span>
<span class="line" id="L315"> .initial = <span class="tok-number">0x01a</span>,</span>
<span class="line" id="L316"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L317"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L318"> .xor_output = <span class="tok-number">0x000</span>,</span>
<span class="line" id="L319">});</span>
<span class="line" id="L320"></span>
<span class="line" id="L321"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc11Umts = Crc(<span class="tok-type">u11</span>, .{</span>
<span class="line" id="L322"> .polynomial = <span class="tok-number">0x307</span>,</span>
<span class="line" id="L323"> .initial = <span class="tok-number">0x000</span>,</span>
<span class="line" id="L324"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L325"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L326"> .xor_output = <span class="tok-number">0x000</span>,</span>
<span class="line" id="L327">});</span>
<span class="line" id="L328"></span>
<span class="line" id="L329"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc12Cdma2000 = Crc(<span class="tok-type">u12</span>, .{</span>
<span class="line" id="L330"> .polynomial = <span class="tok-number">0xf13</span>,</span>
<span class="line" id="L331"> .initial = <span class="tok-number">0xfff</span>,</span>
<span class="line" id="L332"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L333"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L334"> .xor_output = <span class="tok-number">0x000</span>,</span>
<span class="line" id="L335">});</span>
<span class="line" id="L336"></span>
<span class="line" id="L337"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc12Dect = Crc(<span class="tok-type">u12</span>, .{</span>
<span class="line" id="L338"> .polynomial = <span class="tok-number">0x80f</span>,</span>
<span class="line" id="L339"> .initial = <span class="tok-number">0x000</span>,</span>
<span class="line" id="L340"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L341"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L342"> .xor_output = <span class="tok-number">0x000</span>,</span>
<span class="line" id="L343">});</span>
<span class="line" id="L344"></span>
<span class="line" id="L345"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc12Gsm = Crc(<span class="tok-type">u12</span>, .{</span>
<span class="line" id="L346"> .polynomial = <span class="tok-number">0xd31</span>,</span>
<span class="line" id="L347"> .initial = <span class="tok-number">0x000</span>,</span>
<span class="line" id="L348"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L349"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L350"> .xor_output = <span class="tok-number">0xfff</span>,</span>
<span class="line" id="L351">});</span>
<span class="line" id="L352"></span>
<span class="line" id="L353"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc12Umts = Crc(<span class="tok-type">u12</span>, .{</span>
<span class="line" id="L354"> .polynomial = <span class="tok-number">0x80f</span>,</span>
<span class="line" id="L355"> .initial = <span class="tok-number">0x000</span>,</span>
<span class="line" id="L356"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L357"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L358"> .xor_output = <span class="tok-number">0x000</span>,</span>
<span class="line" id="L359">});</span>
<span class="line" id="L360"></span>
<span class="line" id="L361"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc13Bbc = Crc(<span class="tok-type">u13</span>, .{</span>
<span class="line" id="L362"> .polynomial = <span class="tok-number">0x1cf5</span>,</span>
<span class="line" id="L363"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L364"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L365"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L366"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L367">});</span>
<span class="line" id="L368"></span>
<span class="line" id="L369"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc14Darc = Crc(<span class="tok-type">u14</span>, .{</span>
<span class="line" id="L370"> .polynomial = <span class="tok-number">0x0805</span>,</span>
<span class="line" id="L371"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L372"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L373"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L374"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L375">});</span>
<span class="line" id="L376"></span>
<span class="line" id="L377"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc14Gsm = Crc(<span class="tok-type">u14</span>, .{</span>
<span class="line" id="L378"> .polynomial = <span class="tok-number">0x202d</span>,</span>
<span class="line" id="L379"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L380"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L381"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L382"> .xor_output = <span class="tok-number">0x3fff</span>,</span>
<span class="line" id="L383">});</span>
<span class="line" id="L384"></span>
<span class="line" id="L385"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc15Can = Crc(<span class="tok-type">u15</span>, .{</span>
<span class="line" id="L386"> .polynomial = <span class="tok-number">0x4599</span>,</span>
<span class="line" id="L387"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L388"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L389"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L390"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L391">});</span>
<span class="line" id="L392"></span>
<span class="line" id="L393"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc15Mpt1327 = Crc(<span class="tok-type">u15</span>, .{</span>
<span class="line" id="L394"> .polynomial = <span class="tok-number">0x6815</span>,</span>
<span class="line" id="L395"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L396"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L397"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L398"> .xor_output = <span class="tok-number">0x0001</span>,</span>
<span class="line" id="L399">});</span>
<span class="line" id="L400"></span>
<span class="line" id="L401"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Arc = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L402"> .polynomial = <span class="tok-number">0x8005</span>,</span>
<span class="line" id="L403"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L404"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L405"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L406"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L407">});</span>
<span class="line" id="L408"></span>
<span class="line" id="L409"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Cdma2000 = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L410"> .polynomial = <span class="tok-number">0xc867</span>,</span>
<span class="line" id="L411"> .initial = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L412"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L413"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L414"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L415">});</span>
<span class="line" id="L416"></span>
<span class="line" id="L417"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Cms = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L418"> .polynomial = <span class="tok-number">0x8005</span>,</span>
<span class="line" id="L419"> .initial = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L420"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L421"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L422"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L423">});</span>
<span class="line" id="L424"></span>
<span class="line" id="L425"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Dds110 = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L426"> .polynomial = <span class="tok-number">0x8005</span>,</span>
<span class="line" id="L427"> .initial = <span class="tok-number">0x800d</span>,</span>
<span class="line" id="L428"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L429"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L430"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L431">});</span>
<span class="line" id="L432"></span>
<span class="line" id="L433"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16DectR = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L434"> .polynomial = <span class="tok-number">0x0589</span>,</span>
<span class="line" id="L435"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L436"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L437"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L438"> .xor_output = <span class="tok-number">0x0001</span>,</span>
<span class="line" id="L439">});</span>
<span class="line" id="L440"></span>
<span class="line" id="L441"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16DectX = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L442"> .polynomial = <span class="tok-number">0x0589</span>,</span>
<span class="line" id="L443"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L444"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L445"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L446"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L447">});</span>
<span class="line" id="L448"></span>
<span class="line" id="L449"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Dnp = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L450"> .polynomial = <span class="tok-number">0x3d65</span>,</span>
<span class="line" id="L451"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L452"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L453"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L454"> .xor_output = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L455">});</span>
<span class="line" id="L456"></span>
<span class="line" id="L457"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16En13757 = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L458"> .polynomial = <span class="tok-number">0x3d65</span>,</span>
<span class="line" id="L459"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L460"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L461"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L462"> .xor_output = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L463">});</span>
<span class="line" id="L464"></span>
<span class="line" id="L465"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Genibus = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L466"> .polynomial = <span class="tok-number">0x1021</span>,</span>
<span class="line" id="L467"> .initial = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L468"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L469"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L470"> .xor_output = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L471">});</span>
<span class="line" id="L472"></span>
<span class="line" id="L473"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Gsm = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L474"> .polynomial = <span class="tok-number">0x1021</span>,</span>
<span class="line" id="L475"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L476"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L477"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L478"> .xor_output = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L479">});</span>
<span class="line" id="L480"></span>
<span class="line" id="L481"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Ibm3740 = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L482"> .polynomial = <span class="tok-number">0x1021</span>,</span>
<span class="line" id="L483"> .initial = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L484"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L485"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L486"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L487">});</span>
<span class="line" id="L488"></span>
<span class="line" id="L489"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16IbmSdlc = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L490"> .polynomial = <span class="tok-number">0x1021</span>,</span>
<span class="line" id="L491"> .initial = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L492"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L493"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L494"> .xor_output = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L495">});</span>
<span class="line" id="L496"></span>
<span class="line" id="L497"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16IsoIec144433A = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L498"> .polynomial = <span class="tok-number">0x1021</span>,</span>
<span class="line" id="L499"> .initial = <span class="tok-number">0xc6c6</span>,</span>
<span class="line" id="L500"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L501"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L502"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L503">});</span>
<span class="line" id="L504"></span>
<span class="line" id="L505"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Kermit = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L506"> .polynomial = <span class="tok-number">0x1021</span>,</span>
<span class="line" id="L507"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L508"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L509"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L510"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L511">});</span>
<span class="line" id="L512"></span>
<span class="line" id="L513"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Lj1200 = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L514"> .polynomial = <span class="tok-number">0x6f63</span>,</span>
<span class="line" id="L515"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L516"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L517"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L518"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L519">});</span>
<span class="line" id="L520"></span>
<span class="line" id="L521"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16M17 = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L522"> .polynomial = <span class="tok-number">0x5935</span>,</span>
<span class="line" id="L523"> .initial = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L524"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L525"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L526"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L527">});</span>
<span class="line" id="L528"></span>
<span class="line" id="L529"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16MaximDow = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L530"> .polynomial = <span class="tok-number">0x8005</span>,</span>
<span class="line" id="L531"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L532"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L533"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L534"> .xor_output = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L535">});</span>
<span class="line" id="L536"></span>
<span class="line" id="L537"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Mcrf4xx = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L538"> .polynomial = <span class="tok-number">0x1021</span>,</span>
<span class="line" id="L539"> .initial = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L540"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L541"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L542"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L543">});</span>
<span class="line" id="L544"></span>
<span class="line" id="L545"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Modbus = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L546"> .polynomial = <span class="tok-number">0x8005</span>,</span>
<span class="line" id="L547"> .initial = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L548"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L549"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L550"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L551">});</span>
<span class="line" id="L552"></span>
<span class="line" id="L553"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Nrsc5 = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L554"> .polynomial = <span class="tok-number">0x080b</span>,</span>
<span class="line" id="L555"> .initial = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L556"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L557"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L558"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L559">});</span>
<span class="line" id="L560"></span>
<span class="line" id="L561"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16OpensafetyA = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L562"> .polynomial = <span class="tok-number">0x5935</span>,</span>
<span class="line" id="L563"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L564"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L565"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L566"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L567">});</span>
<span class="line" id="L568"></span>
<span class="line" id="L569"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16OpensafetyB = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L570"> .polynomial = <span class="tok-number">0x755b</span>,</span>
<span class="line" id="L571"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L572"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L573"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L574"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L575">});</span>
<span class="line" id="L576"></span>
<span class="line" id="L577"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Profibus = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L578"> .polynomial = <span class="tok-number">0x1dcf</span>,</span>
<span class="line" id="L579"> .initial = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L580"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L581"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L582"> .xor_output = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L583">});</span>
<span class="line" id="L584"></span>
<span class="line" id="L585"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Riello = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L586"> .polynomial = <span class="tok-number">0x1021</span>,</span>
<span class="line" id="L587"> .initial = <span class="tok-number">0xb2aa</span>,</span>
<span class="line" id="L588"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L589"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L590"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L591">});</span>
<span class="line" id="L592"></span>
<span class="line" id="L593"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16SpiFujitsu = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L594"> .polynomial = <span class="tok-number">0x1021</span>,</span>
<span class="line" id="L595"> .initial = <span class="tok-number">0x1d0f</span>,</span>
<span class="line" id="L596"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L597"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L598"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L599">});</span>
<span class="line" id="L600"></span>
<span class="line" id="L601"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16T10Dif = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L602"> .polynomial = <span class="tok-number">0x8bb7</span>,</span>
<span class="line" id="L603"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L604"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L605"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L606"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L607">});</span>
<span class="line" id="L608"></span>
<span class="line" id="L609"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Teledisk = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L610"> .polynomial = <span class="tok-number">0xa097</span>,</span>
<span class="line" id="L611"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L612"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L613"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L614"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L615">});</span>
<span class="line" id="L616"></span>
<span class="line" id="L617"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Tms37157 = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L618"> .polynomial = <span class="tok-number">0x1021</span>,</span>
<span class="line" id="L619"> .initial = <span class="tok-number">0x89ec</span>,</span>
<span class="line" id="L620"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L621"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L622"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L623">});</span>
<span class="line" id="L624"></span>
<span class="line" id="L625"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Umts = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L626"> .polynomial = <span class="tok-number">0x8005</span>,</span>
<span class="line" id="L627"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L628"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L629"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L630"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L631">});</span>
<span class="line" id="L632"></span>
<span class="line" id="L633"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Usb = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L634"> .polynomial = <span class="tok-number">0x8005</span>,</span>
<span class="line" id="L635"> .initial = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L636"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L637"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L638"> .xor_output = <span class="tok-number">0xffff</span>,</span>
<span class="line" id="L639">});</span>
<span class="line" id="L640"></span>
<span class="line" id="L641"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc16Xmodem = Crc(<span class="tok-type">u16</span>, .{</span>
<span class="line" id="L642"> .polynomial = <span class="tok-number">0x1021</span>,</span>
<span class="line" id="L643"> .initial = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L644"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L645"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L646"> .xor_output = <span class="tok-number">0x0000</span>,</span>
<span class="line" id="L647">});</span>
<span class="line" id="L648"></span>
<span class="line" id="L649"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc17CanFd = Crc(<span class="tok-type">u17</span>, .{</span>
<span class="line" id="L650"> .polynomial = <span class="tok-number">0x1685b</span>,</span>
<span class="line" id="L651"> .initial = <span class="tok-number">0x00000</span>,</span>
<span class="line" id="L652"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L653"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L654"> .xor_output = <span class="tok-number">0x00000</span>,</span>
<span class="line" id="L655">});</span>
<span class="line" id="L656"></span>
<span class="line" id="L657"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc21CanFd = Crc(<span class="tok-type">u21</span>, .{</span>
<span class="line" id="L658"> .polynomial = <span class="tok-number">0x102899</span>,</span>
<span class="line" id="L659"> .initial = <span class="tok-number">0x000000</span>,</span>
<span class="line" id="L660"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L661"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L662"> .xor_output = <span class="tok-number">0x000000</span>,</span>
<span class="line" id="L663">});</span>
<span class="line" id="L664"></span>
<span class="line" id="L665"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc24Ble = Crc(<span class="tok-type">u24</span>, .{</span>
<span class="line" id="L666"> .polynomial = <span class="tok-number">0x00065b</span>,</span>
<span class="line" id="L667"> .initial = <span class="tok-number">0x555555</span>,</span>
<span class="line" id="L668"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L669"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L670"> .xor_output = <span class="tok-number">0x000000</span>,</span>
<span class="line" id="L671">});</span>
<span class="line" id="L672"></span>
<span class="line" id="L673"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc24FlexrayA = Crc(<span class="tok-type">u24</span>, .{</span>
<span class="line" id="L674"> .polynomial = <span class="tok-number">0x5d6dcb</span>,</span>
<span class="line" id="L675"> .initial = <span class="tok-number">0xfedcba</span>,</span>
<span class="line" id="L676"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L677"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L678"> .xor_output = <span class="tok-number">0x000000</span>,</span>
<span class="line" id="L679">});</span>
<span class="line" id="L680"></span>
<span class="line" id="L681"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc24FlexrayB = Crc(<span class="tok-type">u24</span>, .{</span>
<span class="line" id="L682"> .polynomial = <span class="tok-number">0x5d6dcb</span>,</span>
<span class="line" id="L683"> .initial = <span class="tok-number">0xabcdef</span>,</span>
<span class="line" id="L684"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L685"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L686"> .xor_output = <span class="tok-number">0x000000</span>,</span>
<span class="line" id="L687">});</span>
<span class="line" id="L688"></span>
<span class="line" id="L689"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc24Interlaken = Crc(<span class="tok-type">u24</span>, .{</span>
<span class="line" id="L690"> .polynomial = <span class="tok-number">0x328b63</span>,</span>
<span class="line" id="L691"> .initial = <span class="tok-number">0xffffff</span>,</span>
<span class="line" id="L692"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L693"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L694"> .xor_output = <span class="tok-number">0xffffff</span>,</span>
<span class="line" id="L695">});</span>
<span class="line" id="L696"></span>
<span class="line" id="L697"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc24LteA = Crc(<span class="tok-type">u24</span>, .{</span>
<span class="line" id="L698"> .polynomial = <span class="tok-number">0x864cfb</span>,</span>
<span class="line" id="L699"> .initial = <span class="tok-number">0x000000</span>,</span>
<span class="line" id="L700"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L701"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L702"> .xor_output = <span class="tok-number">0x000000</span>,</span>
<span class="line" id="L703">});</span>
<span class="line" id="L704"></span>
<span class="line" id="L705"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc24LteB = Crc(<span class="tok-type">u24</span>, .{</span>
<span class="line" id="L706"> .polynomial = <span class="tok-number">0x800063</span>,</span>
<span class="line" id="L707"> .initial = <span class="tok-number">0x000000</span>,</span>
<span class="line" id="L708"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L709"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L710"> .xor_output = <span class="tok-number">0x000000</span>,</span>
<span class="line" id="L711">});</span>
<span class="line" id="L712"></span>
<span class="line" id="L713"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc24Openpgp = Crc(<span class="tok-type">u24</span>, .{</span>
<span class="line" id="L714"> .polynomial = <span class="tok-number">0x864cfb</span>,</span>
<span class="line" id="L715"> .initial = <span class="tok-number">0xb704ce</span>,</span>
<span class="line" id="L716"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L717"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L718"> .xor_output = <span class="tok-number">0x000000</span>,</span>
<span class="line" id="L719">});</span>
<span class="line" id="L720"></span>
<span class="line" id="L721"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc24Os9 = Crc(<span class="tok-type">u24</span>, .{</span>
<span class="line" id="L722"> .polynomial = <span class="tok-number">0x800063</span>,</span>
<span class="line" id="L723"> .initial = <span class="tok-number">0xffffff</span>,</span>
<span class="line" id="L724"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L725"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L726"> .xor_output = <span class="tok-number">0xffffff</span>,</span>
<span class="line" id="L727">});</span>
<span class="line" id="L728"></span>
<span class="line" id="L729"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc30Cdma = Crc(<span class="tok-type">u30</span>, .{</span>
<span class="line" id="L730"> .polynomial = <span class="tok-number">0x2030b9c7</span>,</span>
<span class="line" id="L731"> .initial = <span class="tok-number">0x3fffffff</span>,</span>
<span class="line" id="L732"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L733"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L734"> .xor_output = <span class="tok-number">0x3fffffff</span>,</span>
<span class="line" id="L735">});</span>
<span class="line" id="L736"></span>
<span class="line" id="L737"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc31Philips = Crc(<span class="tok-type">u31</span>, .{</span>
<span class="line" id="L738"> .polynomial = <span class="tok-number">0x04c11db7</span>,</span>
<span class="line" id="L739"> .initial = <span class="tok-number">0x7fffffff</span>,</span>
<span class="line" id="L740"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L741"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L742"> .xor_output = <span class="tok-number">0x7fffffff</span>,</span>
<span class="line" id="L743">});</span>
<span class="line" id="L744"></span>
<span class="line" id="L745"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc32Aixm = Crc(<span class="tok-type">u32</span>, .{</span>
<span class="line" id="L746"> .polynomial = <span class="tok-number">0x814141ab</span>,</span>
<span class="line" id="L747"> .initial = <span class="tok-number">0x00000000</span>,</span>
<span class="line" id="L748"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L749"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L750"> .xor_output = <span class="tok-number">0x00000000</span>,</span>
<span class="line" id="L751">});</span>
<span class="line" id="L752"></span>
<span class="line" id="L753"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc32Autosar = Crc(<span class="tok-type">u32</span>, .{</span>
<span class="line" id="L754"> .polynomial = <span class="tok-number">0xf4acfb13</span>,</span>
<span class="line" id="L755"> .initial = <span class="tok-number">0xffffffff</span>,</span>
<span class="line" id="L756"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L757"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L758"> .xor_output = <span class="tok-number">0xffffffff</span>,</span>
<span class="line" id="L759">});</span>
<span class="line" id="L760"></span>
<span class="line" id="L761"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc32Base91D = Crc(<span class="tok-type">u32</span>, .{</span>
<span class="line" id="L762"> .polynomial = <span class="tok-number">0xa833982b</span>,</span>
<span class="line" id="L763"> .initial = <span class="tok-number">0xffffffff</span>,</span>
<span class="line" id="L764"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L765"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L766"> .xor_output = <span class="tok-number">0xffffffff</span>,</span>
<span class="line" id="L767">});</span>
<span class="line" id="L768"></span>
<span class="line" id="L769"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc32Bzip2 = Crc(<span class="tok-type">u32</span>, .{</span>
<span class="line" id="L770"> .polynomial = <span class="tok-number">0x04c11db7</span>,</span>
<span class="line" id="L771"> .initial = <span class="tok-number">0xffffffff</span>,</span>
<span class="line" id="L772"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L773"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L774"> .xor_output = <span class="tok-number">0xffffffff</span>,</span>
<span class="line" id="L775">});</span>
<span class="line" id="L776"></span>
<span class="line" id="L777"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc32CdRomEdc = Crc(<span class="tok-type">u32</span>, .{</span>
<span class="line" id="L778"> .polynomial = <span class="tok-number">0x8001801b</span>,</span>
<span class="line" id="L779"> .initial = <span class="tok-number">0x00000000</span>,</span>
<span class="line" id="L780"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L781"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L782"> .xor_output = <span class="tok-number">0x00000000</span>,</span>
<span class="line" id="L783">});</span>
<span class="line" id="L784"></span>
<span class="line" id="L785"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc32Cksum = Crc(<span class="tok-type">u32</span>, .{</span>
<span class="line" id="L786"> .polynomial = <span class="tok-number">0x04c11db7</span>,</span>
<span class="line" id="L787"> .initial = <span class="tok-number">0x00000000</span>,</span>
<span class="line" id="L788"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L789"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L790"> .xor_output = <span class="tok-number">0xffffffff</span>,</span>
<span class="line" id="L791">});</span>
<span class="line" id="L792"></span>
<span class="line" id="L793"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc32Iscsi = Crc(<span class="tok-type">u32</span>, .{</span>
<span class="line" id="L794"> .polynomial = <span class="tok-number">0x1edc6f41</span>,</span>
<span class="line" id="L795"> .initial = <span class="tok-number">0xffffffff</span>,</span>
<span class="line" id="L796"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L797"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L798"> .xor_output = <span class="tok-number">0xffffffff</span>,</span>
<span class="line" id="L799">});</span>
<span class="line" id="L800"></span>
<span class="line" id="L801"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc32IsoHdlc = Crc(<span class="tok-type">u32</span>, .{</span>
<span class="line" id="L802"> .polynomial = <span class="tok-number">0x04c11db7</span>,</span>
<span class="line" id="L803"> .initial = <span class="tok-number">0xffffffff</span>,</span>
<span class="line" id="L804"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L805"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L806"> .xor_output = <span class="tok-number">0xffffffff</span>,</span>
<span class="line" id="L807">});</span>
<span class="line" id="L808"></span>
<span class="line" id="L809"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc32Jamcrc = Crc(<span class="tok-type">u32</span>, .{</span>
<span class="line" id="L810"> .polynomial = <span class="tok-number">0x04c11db7</span>,</span>
<span class="line" id="L811"> .initial = <span class="tok-number">0xffffffff</span>,</span>
<span class="line" id="L812"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L813"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L814"> .xor_output = <span class="tok-number">0x00000000</span>,</span>
<span class="line" id="L815">});</span>
<span class="line" id="L816"></span>
<span class="line" id="L817"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc32Mef = Crc(<span class="tok-type">u32</span>, .{</span>
<span class="line" id="L818"> .polynomial = <span class="tok-number">0x741b8cd7</span>,</span>
<span class="line" id="L819"> .initial = <span class="tok-number">0xffffffff</span>,</span>
<span class="line" id="L820"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L821"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L822"> .xor_output = <span class="tok-number">0x00000000</span>,</span>
<span class="line" id="L823">});</span>
<span class="line" id="L824"></span>
<span class="line" id="L825"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc32Mpeg2 = Crc(<span class="tok-type">u32</span>, .{</span>
<span class="line" id="L826"> .polynomial = <span class="tok-number">0x04c11db7</span>,</span>
<span class="line" id="L827"> .initial = <span class="tok-number">0xffffffff</span>,</span>
<span class="line" id="L828"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L829"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L830"> .xor_output = <span class="tok-number">0x00000000</span>,</span>
<span class="line" id="L831">});</span>
<span class="line" id="L832"></span>
<span class="line" id="L833"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc32Xfer = Crc(<span class="tok-type">u32</span>, .{</span>
<span class="line" id="L834"> .polynomial = <span class="tok-number">0x000000af</span>,</span>
<span class="line" id="L835"> .initial = <span class="tok-number">0x00000000</span>,</span>
<span class="line" id="L836"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L837"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L838"> .xor_output = <span class="tok-number">0x00000000</span>,</span>
<span class="line" id="L839">});</span>
<span class="line" id="L840"></span>
<span class="line" id="L841"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc40Gsm = Crc(<span class="tok-type">u40</span>, .{</span>
<span class="line" id="L842"> .polynomial = <span class="tok-number">0x0004820009</span>,</span>
<span class="line" id="L843"> .initial = <span class="tok-number">0x0000000000</span>,</span>
<span class="line" id="L844"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L845"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L846"> .xor_output = <span class="tok-number">0xffffffffff</span>,</span>
<span class="line" id="L847">});</span>
<span class="line" id="L848"></span>
<span class="line" id="L849"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc64Ecma182 = Crc(<span class="tok-type">u64</span>, .{</span>
<span class="line" id="L850"> .polynomial = <span class="tok-number">0x42f0e1eba9ea3693</span>,</span>
<span class="line" id="L851"> .initial = <span class="tok-number">0x0000000000000000</span>,</span>
<span class="line" id="L852"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L853"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L854"> .xor_output = <span class="tok-number">0x0000000000000000</span>,</span>
<span class="line" id="L855">});</span>
<span class="line" id="L856"></span>
<span class="line" id="L857"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc64GoIso = Crc(<span class="tok-type">u64</span>, .{</span>
<span class="line" id="L858"> .polynomial = <span class="tok-number">0x000000000000001b</span>,</span>
<span class="line" id="L859"> .initial = <span class="tok-number">0xffffffffffffffff</span>,</span>
<span class="line" id="L860"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L861"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L862"> .xor_output = <span class="tok-number">0xffffffffffffffff</span>,</span>
<span class="line" id="L863">});</span>
<span class="line" id="L864"></span>
<span class="line" id="L865"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc64Ms = Crc(<span class="tok-type">u64</span>, .{</span>
<span class="line" id="L866"> .polynomial = <span class="tok-number">0x259c84cba6426349</span>,</span>
<span class="line" id="L867"> .initial = <span class="tok-number">0xffffffffffffffff</span>,</span>
<span class="line" id="L868"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L869"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L870"> .xor_output = <span class="tok-number">0x0000000000000000</span>,</span>
<span class="line" id="L871">});</span>
<span class="line" id="L872"></span>
<span class="line" id="L873"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc64Redis = Crc(<span class="tok-type">u64</span>, .{</span>
<span class="line" id="L874"> .polynomial = <span class="tok-number">0xad93d23594c935a9</span>,</span>
<span class="line" id="L875"> .initial = <span class="tok-number">0x0000000000000000</span>,</span>
<span class="line" id="L876"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L877"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L878"> .xor_output = <span class="tok-number">0x0000000000000000</span>,</span>
<span class="line" id="L879">});</span>
<span class="line" id="L880"></span>
<span class="line" id="L881"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc64We = Crc(<span class="tok-type">u64</span>, .{</span>
<span class="line" id="L882"> .polynomial = <span class="tok-number">0x42f0e1eba9ea3693</span>,</span>
<span class="line" id="L883"> .initial = <span class="tok-number">0xffffffffffffffff</span>,</span>
<span class="line" id="L884"> .reflect_input = <span class="tok-null">false</span>,</span>
<span class="line" id="L885"> .reflect_output = <span class="tok-null">false</span>,</span>
<span class="line" id="L886"> .xor_output = <span class="tok-number">0xffffffffffffffff</span>,</span>
<span class="line" id="L887">});</span>
<span class="line" id="L888"></span>
<span class="line" id="L889"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc64Xz = Crc(<span class="tok-type">u64</span>, .{</span>
<span class="line" id="L890"> .polynomial = <span class="tok-number">0x42f0e1eba9ea3693</span>,</span>
<span class="line" id="L891"> .initial = <span class="tok-number">0xffffffffffffffff</span>,</span>
<span class="line" id="L892"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L893"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L894"> .xor_output = <span class="tok-number">0xffffffffffffffff</span>,</span>
<span class="line" id="L895">});</span>
<span class="line" id="L896"></span>
<span class="line" id="L897"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Crc82Darc = Crc(<span class="tok-type">u82</span>, .{</span>
<span class="line" id="L898"> .polynomial = <span class="tok-number">0x0308c0111011401440411</span>,</span>
<span class="line" id="L899"> .initial = <span class="tok-number">0x000000000000000000000</span>,</span>
<span class="line" id="L900"> .reflect_input = <span class="tok-null">true</span>,</span>
<span class="line" id="L901"> .reflect_output = <span class="tok-null">true</span>,</span>
<span class="line" id="L902"> .xor_output = <span class="tok-number">0x000000000000000000000</span>,</span>
<span class="line" id="L903">});</span>
<span class="line" id="L904"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! Abstract Syntax Tree for Zig source code.</span></span>
<span class="line" id="L2"><span class="tok-comment">//! For Zig syntax, the root node is at nodes[0] and contains the list of</span></span>
<span class="line" id="L3"><span class="tok-comment">//! sub-nodes.</span></span>
<span class="line" id="L4"><span class="tok-comment">//! For Zon syntax, the root node is at nodes[0] and contains lhs as the node</span></span>
<span class="line" id="L5"><span class="tok-comment">//! index of the main expression.</span></span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-comment">/// Reference to externally-owned data.</span></span>
<span class="line" id="L8">source: [:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L9"></span>
<span class="line" id="L10">tokens: TokenList.Slice,</span>
<span class="line" id="L11"><span class="tok-comment">/// The root AST node is assumed to be index 0. Since there can be no</span></span>
<span class="line" id="L12"><span class="tok-comment">/// references to the root node, this means 0 is available to indicate null.</span></span>
<span class="line" id="L13">nodes: NodeList.Slice,</span>
<span class="line" id="L14">extra_data: []Node.Index,</span>
<span class="line" id="L15"></span>
<span class="line" id="L16">errors: []<span class="tok-kw">const</span> Error,</span>
<span class="line" id="L17"></span>
<span class="line" id="L18"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> TokenIndex = <span class="tok-type">u32</span>;</span>
<span class="line" id="L19"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ByteOffset = <span class="tok-type">u32</span>;</span>
<span class="line" id="L20"></span>
<span class="line" id="L21"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> TokenList = std.MultiArrayList(<span class="tok-kw">struct</span> {</span>
<span class="line" id="L22"> tag: Token.Tag,</span>
<span class="line" id="L23"> start: ByteOffset,</span>
<span class="line" id="L24">});</span>
<span class="line" id="L25"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> NodeList = std.MultiArrayList(Node);</span>
<span class="line" id="L26"></span>
<span class="line" id="L27"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Location = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L28"> line: <span class="tok-type">usize</span>,</span>
<span class="line" id="L29"> column: <span class="tok-type">usize</span>,</span>
<span class="line" id="L30"> line_start: <span class="tok-type">usize</span>,</span>
<span class="line" id="L31"> line_end: <span class="tok-type">usize</span>,</span>
<span class="line" id="L32">};</span>
<span class="line" id="L33"></span>
<span class="line" id="L34"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(tree: *Ast, gpa: Allocator) <span class="tok-type">void</span> {</span>
<span class="line" id="L35"> tree.tokens.deinit(gpa);</span>
<span class="line" id="L36"> tree.nodes.deinit(gpa);</span>
<span class="line" id="L37"> gpa.free(tree.extra_data);</span>
<span class="line" id="L38"> gpa.free(tree.errors);</span>
<span class="line" id="L39"> tree.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L40">}</span>
<span class="line" id="L41"></span>
<span class="line" id="L42"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> RenderError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L43"> <span class="tok-comment">/// Ran out of memory allocating call stack frames to complete rendering, or</span></span>
<span class="line" id="L44"> <span class="tok-comment">/// ran out of memory allocating space in the output buffer.</span></span>
<span class="line" id="L45"> OutOfMemory,</span>
<span class="line" id="L46">};</span>
<span class="line" id="L47"></span>
<span class="line" id="L48"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Mode = <span class="tok-kw">enum</span> { zig, zon };</span>
<span class="line" id="L49"></span>
<span class="line" id="L50"><span class="tok-comment">/// Result should be freed with tree.deinit() when there are</span></span>
<span class="line" id="L51"><span class="tok-comment">/// no more references to any of the tokens or nodes.</span></span>
<span class="line" id="L52"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parse</span>(gpa: Allocator, source: [:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span>, mode: Mode) Allocator.Error!Ast {</span>
<span class="line" id="L53"> <span class="tok-kw">var</span> tokens = Ast.TokenList{};</span>
<span class="line" id="L54"> <span class="tok-kw">defer</span> tokens.deinit(gpa);</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"> <span class="tok-comment">// Empirically, the zig std lib has an 8:1 ratio of source bytes to token count.</span>
</span>
<span class="line" id="L57"> <span class="tok-kw">const</span> estimated_token_count = source.len / <span class="tok-number">8</span>;</span>
<span class="line" id="L58"> <span class="tok-kw">try</span> tokens.ensureTotalCapacity(gpa, estimated_token_count);</span>
<span class="line" id="L59"></span>
<span class="line" id="L60"> <span class="tok-kw">var</span> tokenizer = std.zig.Tokenizer.init(source);</span>
<span class="line" id="L61"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L62"> <span class="tok-kw">const</span> token = tokenizer.next();</span>
<span class="line" id="L63"> <span class="tok-kw">try</span> tokens.append(gpa, .{</span>
<span class="line" id="L64"> .tag = token.tag,</span>
<span class="line" id="L65"> .start = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(token.loc.start)),</span>
<span class="line" id="L66"> });</span>
<span class="line" id="L67"> <span class="tok-kw">if</span> (token.tag == .eof) <span class="tok-kw">break</span>;</span>
<span class="line" id="L68"> }</span>
<span class="line" id="L69"></span>
<span class="line" id="L70"> <span class="tok-kw">var</span> parser: Parse = .{</span>
<span class="line" id="L71"> .source = source,</span>
<span class="line" id="L72"> .gpa = gpa,</span>
<span class="line" id="L73"> .token_tags = tokens.items(.tag),</span>
<span class="line" id="L74"> .token_starts = tokens.items(.start),</span>
<span class="line" id="L75"> .errors = .{},</span>
<span class="line" id="L76"> .nodes = .{},</span>
<span class="line" id="L77"> .extra_data = .{},</span>
<span class="line" id="L78"> .scratch = .{},</span>
<span class="line" id="L79"> .tok_i = <span class="tok-number">0</span>,</span>
<span class="line" id="L80"> };</span>
<span class="line" id="L81"> <span class="tok-kw">defer</span> parser.errors.deinit(gpa);</span>
<span class="line" id="L82"> <span class="tok-kw">defer</span> parser.nodes.deinit(gpa);</span>
<span class="line" id="L83"> <span class="tok-kw">defer</span> parser.extra_data.deinit(gpa);</span>
<span class="line" id="L84"> <span class="tok-kw">defer</span> parser.scratch.deinit(gpa);</span>
<span class="line" id="L85"></span>
<span class="line" id="L86"> <span class="tok-comment">// Empirically, Zig source code has a 2:1 ratio of tokens to AST nodes.</span>
</span>
<span class="line" id="L87"> <span class="tok-comment">// Make sure at least 1 so we can use appendAssumeCapacity on the root node below.</span>
</span>
<span class="line" id="L88"> <span class="tok-kw">const</span> estimated_node_count = (tokens.len + <span class="tok-number">2</span>) / <span class="tok-number">2</span>;</span>
<span class="line" id="L89"> <span class="tok-kw">try</span> parser.nodes.ensureTotalCapacity(gpa, estimated_node_count);</span>
<span class="line" id="L90"></span>
<span class="line" id="L91"> <span class="tok-kw">switch</span> (mode) {</span>
<span class="line" id="L92"> .zig => <span class="tok-kw">try</span> parser.parseRoot(),</span>
<span class="line" id="L93"> .zon => <span class="tok-kw">try</span> parser.parseZon(),</span>
<span class="line" id="L94"> }</span>
<span class="line" id="L95"></span>
<span class="line" id="L96"> <span class="tok-comment">// TODO experiment with compacting the MultiArrayList slices here</span>
</span>
<span class="line" id="L97"> <span class="tok-kw">return</span> Ast{</span>
<span class="line" id="L98"> .source = source,</span>
<span class="line" id="L99"> .tokens = tokens.toOwnedSlice(),</span>
<span class="line" id="L100"> .nodes = parser.nodes.toOwnedSlice(),</span>
<span class="line" id="L101"> .extra_data = <span class="tok-kw">try</span> parser.extra_data.toOwnedSlice(gpa),</span>
<span class="line" id="L102"> .errors = <span class="tok-kw">try</span> parser.errors.toOwnedSlice(gpa),</span>
<span class="line" id="L103"> };</span>
<span class="line" id="L104">}</span>
<span class="line" id="L105"></span>
<span class="line" id="L106"><span class="tok-comment">/// `gpa` is used for allocating the resulting formatted source code, as well as</span></span>
<span class="line" id="L107"><span class="tok-comment">/// for allocating extra stack memory if needed, because this function utilizes recursion.</span></span>
<span class="line" id="L108"><span class="tok-comment">/// Note: that's not actually true yet, see https://github.com/ziglang/zig/issues/1006.</span></span>
<span class="line" id="L109"><span class="tok-comment">/// Caller owns the returned slice of bytes, allocated with `gpa`.</span></span>
<span class="line" id="L110"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">render</span>(tree: Ast, gpa: Allocator) RenderError![]<span class="tok-type">u8</span> {</span>
<span class="line" id="L111"> <span class="tok-kw">var</span> buffer = std.ArrayList(<span class="tok-type">u8</span>).init(gpa);</span>
<span class="line" id="L112"> <span class="tok-kw">defer</span> buffer.deinit();</span>
<span class="line" id="L113"></span>
<span class="line" id="L114"> <span class="tok-kw">try</span> tree.renderToArrayList(&buffer);</span>
<span class="line" id="L115"> <span class="tok-kw">return</span> buffer.toOwnedSlice();</span>
<span class="line" id="L116">}</span>
<span class="line" id="L117"></span>
<span class="line" id="L118"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">renderToArrayList</span>(tree: Ast, buffer: *std.ArrayList(<span class="tok-type">u8</span>)) RenderError!<span class="tok-type">void</span> {</span>
<span class="line" id="L119"> <span class="tok-kw">return</span> <span class="tok-builtin">@import</span>(<span class="tok-str">"./render.zig"</span>).renderTree(buffer, tree);</span>
<span class="line" id="L120">}</span>
<span class="line" id="L121"></span>
<span class="line" id="L122"><span class="tok-comment">/// Returns an extra offset for column and byte offset of errors that</span></span>
<span class="line" id="L123"><span class="tok-comment">/// should point after the token in the error message.</span></span>
<span class="line" id="L124"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">errorOffset</span>(tree: Ast, parse_error: Error) <span class="tok-type">u32</span> {</span>
<span class="line" id="L125"> <span class="tok-kw">return</span> <span class="tok-kw">if</span> (parse_error.token_is_prev)</span>
<span class="line" id="L126"> <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(tree.tokenSlice(parse_error.token).len))</span>
<span class="line" id="L127"> <span class="tok-kw">else</span></span>
<span class="line" id="L128"> <span class="tok-number">0</span>;</span>
<span class="line" id="L129">}</span>
<span class="line" id="L130"></span>
<span class="line" id="L131"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">tokenLocation</span>(self: Ast, start_offset: ByteOffset, token_index: TokenIndex) Location {</span>
<span class="line" id="L132"> <span class="tok-kw">var</span> loc = Location{</span>
<span class="line" id="L133"> .line = <span class="tok-number">0</span>,</span>
<span class="line" id="L134"> .column = <span class="tok-number">0</span>,</span>
<span class="line" id="L135"> .line_start = start_offset,</span>
<span class="line" id="L136"> .line_end = self.source.len,</span>
<span class="line" id="L137"> };</span>
<span class="line" id="L138"> <span class="tok-kw">const</span> token_start = self.tokens.items(.start)[token_index];</span>
<span class="line" id="L139"> <span class="tok-kw">for</span> (self.source[start_offset..], <span class="tok-number">0</span>..) |c, i| {</span>
<span class="line" id="L140"> <span class="tok-kw">if</span> (i + start_offset == token_start) {</span>
<span class="line" id="L141"> loc.line_end = i + start_offset;</span>
<span class="line" id="L142"> <span class="tok-kw">while</span> (loc.line_end < self.source.len <span class="tok-kw">and</span> self.source[loc.line_end] != <span class="tok-str">'\n'</span>) {</span>
<span class="line" id="L143"> loc.line_end += <span class="tok-number">1</span>;</span>
<span class="line" id="L144"> }</span>
<span class="line" id="L145"> <span class="tok-kw">return</span> loc;</span>
<span class="line" id="L146"> }</span>
<span class="line" id="L147"> <span class="tok-kw">if</span> (c == <span class="tok-str">'\n'</span>) {</span>
<span class="line" id="L148"> loc.line += <span class="tok-number">1</span>;</span>
<span class="line" id="L149"> loc.column = <span class="tok-number">0</span>;</span>
<span class="line" id="L150"> loc.line_start = i + <span class="tok-number">1</span>;</span>
<span class="line" id="L151"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L152"> loc.column += <span class="tok-number">1</span>;</span>
<span class="line" id="L153"> }</span>
<span class="line" id="L154"> }</span>
<span class="line" id="L155"> <span class="tok-kw">return</span> loc;</span>
<span class="line" id="L156">}</span>
<span class="line" id="L157"></span>
<span class="line" id="L158"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">tokenSlice</span>(tree: Ast, token_index: TokenIndex) []<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L159"> <span class="tok-kw">const</span> token_starts = tree.tokens.items(.start);</span>
<span class="line" id="L160"> <span class="tok-kw">const</span> token_tags = tree.tokens.items(.tag);</span>
<span class="line" id="L161"> <span class="tok-kw">const</span> token_tag = token_tags[token_index];</span>
<span class="line" id="L162"></span>
<span class="line" id="L163"> <span class="tok-comment">// Many tokens can be determined entirely by their tag.</span>
</span>
<span class="line" id="L164"> <span class="tok-kw">if</span> (token_tag.lexeme()) |lexeme| {</span>
<span class="line" id="L165"> <span class="tok-kw">return</span> lexeme;</span>
<span class="line" id="L166"> }</span>
<span class="line" id="L167"></span>
<span class="line" id="L168"> <span class="tok-comment">// For some tokens, re-tokenization is needed to find the end.</span>
</span>
<span class="line" id="L169"> <span class="tok-kw">var</span> tokenizer: std.zig.Tokenizer = .{</span>
<span class="line" id="L170"> .buffer = tree.source,</span>
<span class="line" id="L171"> .index = token_starts[token_index],</span>
<span class="line" id="L172"> .pending_invalid_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L173"> };</span>
<span class="line" id="L174"> <span class="tok-kw">const</span> token = tokenizer.findTagAtCurrentIndex(token_tag);</span>
<span class="line" id="L175"> assert(token.tag == token_tag);</span>
<span class="line" id="L176"> <span class="tok-kw">return</span> tree.source[token.loc.start..token.loc.end];</span>
<span class="line" id="L177">}</span>
<span class="line" id="L178"></span>
<span class="line" id="L179"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">extraData</span>(tree: Ast, index: <span class="tok-type">usize</span>, <span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>) T {</span>
<span class="line" id="L180"> <span class="tok-kw">const</span> fields = std.meta.fields(T);</span>
<span class="line" id="L181"> <span class="tok-kw">var</span> result: T = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L182"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (fields, <span class="tok-number">0</span>..) |field, i| {</span>
<span class="line" id="L183"> <span class="tok-kw">comptime</span> assert(field.<span class="tok-type">type</span> == Node.Index);</span>
<span class="line" id="L184"> <span class="tok-builtin">@field</span>(result, field.name) = tree.extra_data[index + i];</span>
<span class="line" id="L185"> }</span>
<span class="line" id="L186"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L187">}</span>
<span class="line" id="L188"></span>
<span class="line" id="L189"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">rootDecls</span>(tree: Ast) []<span class="tok-kw">const</span> Node.Index {</span>
<span class="line" id="L190"> <span class="tok-comment">// Root is always index 0.</span>
</span>
<span class="line" id="L191"> <span class="tok-kw">const</span> nodes_data = tree.nodes.items(.data);</span>
<span class="line" id="L192"> <span class="tok-kw">return</span> tree.extra_data[nodes_data[<span class="tok-number">0</span>].lhs..nodes_data[<span class="tok-number">0</span>].rhs];</span>
<span class="line" id="L193">}</span>
<span class="line" id="L194"></span>
<span class="line" id="L195"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">renderError</span>(tree: Ast, parse_error: Error, stream: <span class="tok-kw">anytype</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L196"> <span class="tok-kw">const</span> token_tags = tree.tokens.items(.tag);</span>
<span class="line" id="L197"> <span class="tok-kw">switch</span> (parse_error.tag) {</span>
<span class="line" id="L198"> .asterisk_after_ptr_deref => {</span>
<span class="line" id="L199"> <span class="tok-comment">// Note that the token will point at the `.*` but ideally the source</span>
</span>
<span class="line" id="L200"> <span class="tok-comment">// location would point to the `*` after the `.*`.</span>
</span>
<span class="line" id="L201"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"'.*' cannot be followed by '*'. Are you missing a space?"</span>);</span>
<span class="line" id="L202"> },</span>
<span class="line" id="L203"> .chained_comparison_operators => {</span>
<span class="line" id="L204"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"comparison operators cannot be chained"</span>);</span>
<span class="line" id="L205"> },</span>
<span class="line" id="L206"> .decl_between_fields => {</span>
<span class="line" id="L207"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"declarations are not allowed between container fields"</span>);</span>
<span class="line" id="L208"> },</span>
<span class="line" id="L209"> .expected_block => {</span>
<span class="line" id="L210"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected block, found '{s}'"</span>, .{</span>
<span class="line" id="L211"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L212"> });</span>
<span class="line" id="L213"> },</span>
<span class="line" id="L214"> .expected_block_or_assignment => {</span>
<span class="line" id="L215"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected block or assignment, found '{s}'"</span>, .{</span>
<span class="line" id="L216"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L217"> });</span>
<span class="line" id="L218"> },</span>
<span class="line" id="L219"> .expected_block_or_expr => {</span>
<span class="line" id="L220"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected block or expression, found '{s}'"</span>, .{</span>
<span class="line" id="L221"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L222"> });</span>
<span class="line" id="L223"> },</span>
<span class="line" id="L224"> .expected_block_or_field => {</span>
<span class="line" id="L225"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected block or field, found '{s}'"</span>, .{</span>
<span class="line" id="L226"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L227"> });</span>
<span class="line" id="L228"> },</span>
<span class="line" id="L229"> .expected_container_members => {</span>
<span class="line" id="L230"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected test, comptime, var decl, or container field, found '{s}'"</span>, .{</span>
<span class="line" id="L231"> token_tags[parse_error.token].symbol(),</span>
<span class="line" id="L232"> });</span>
<span class="line" id="L233"> },</span>
<span class="line" id="L234"> .expected_expr => {</span>
<span class="line" id="L235"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected expression, found '{s}'"</span>, .{</span>
<span class="line" id="L236"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L237"> });</span>
<span class="line" id="L238"> },</span>
<span class="line" id="L239"> .expected_expr_or_assignment => {</span>
<span class="line" id="L240"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected expression or assignment, found '{s}'"</span>, .{</span>
<span class="line" id="L241"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L242"> });</span>
<span class="line" id="L243"> },</span>
<span class="line" id="L244"> .expected_fn => {</span>
<span class="line" id="L245"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected function, found '{s}'"</span>, .{</span>
<span class="line" id="L246"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L247"> });</span>
<span class="line" id="L248"> },</span>
<span class="line" id="L249"> .expected_inlinable => {</span>
<span class="line" id="L250"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected 'while' or 'for', found '{s}'"</span>, .{</span>
<span class="line" id="L251"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L252"> });</span>
<span class="line" id="L253"> },</span>
<span class="line" id="L254"> .expected_labelable => {</span>
<span class="line" id="L255"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected 'while', 'for', 'inline', or '{{', found '{s}'"</span>, .{</span>
<span class="line" id="L256"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L257"> });</span>
<span class="line" id="L258"> },</span>
<span class="line" id="L259"> .expected_param_list => {</span>
<span class="line" id="L260"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected parameter list, found '{s}'"</span>, .{</span>
<span class="line" id="L261"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L262"> });</span>
<span class="line" id="L263"> },</span>
<span class="line" id="L264"> .expected_prefix_expr => {</span>
<span class="line" id="L265"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected prefix expression, found '{s}'"</span>, .{</span>
<span class="line" id="L266"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L267"> });</span>
<span class="line" id="L268"> },</span>
<span class="line" id="L269"> .expected_primary_type_expr => {</span>
<span class="line" id="L270"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected primary type expression, found '{s}'"</span>, .{</span>
<span class="line" id="L271"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L272"> });</span>
<span class="line" id="L273"> },</span>
<span class="line" id="L274"> .expected_pub_item => {</span>
<span class="line" id="L275"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"expected function or variable declaration after pub"</span>);</span>
<span class="line" id="L276"> },</span>
<span class="line" id="L277"> .expected_return_type => {</span>
<span class="line" id="L278"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected return type expression, found '{s}'"</span>, .{</span>
<span class="line" id="L279"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L280"> });</span>
<span class="line" id="L281"> },</span>
<span class="line" id="L282"> .expected_semi_or_else => {</span>
<span class="line" id="L283"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"expected ';' or 'else' after statement"</span>);</span>
<span class="line" id="L284"> },</span>
<span class="line" id="L285"> .expected_semi_or_lbrace => {</span>
<span class="line" id="L286"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"expected ';' or block after function prototype"</span>);</span>
<span class="line" id="L287"> },</span>
<span class="line" id="L288"> .expected_statement => {</span>
<span class="line" id="L289"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected statement, found '{s}'"</span>, .{</span>
<span class="line" id="L290"> token_tags[parse_error.token].symbol(),</span>
<span class="line" id="L291"> });</span>
<span class="line" id="L292"> },</span>
<span class="line" id="L293"> .expected_suffix_op => {</span>
<span class="line" id="L294"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected pointer dereference, optional unwrap, or field access, found '{s}'"</span>, .{</span>
<span class="line" id="L295"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L296"> });</span>
<span class="line" id="L297"> },</span>
<span class="line" id="L298"> .expected_type_expr => {</span>
<span class="line" id="L299"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected type expression, found '{s}'"</span>, .{</span>
<span class="line" id="L300"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L301"> });</span>
<span class="line" id="L302"> },</span>
<span class="line" id="L303"> .expected_var_decl => {</span>
<span class="line" id="L304"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected variable declaration, found '{s}'"</span>, .{</span>
<span class="line" id="L305"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L306"> });</span>
<span class="line" id="L307"> },</span>
<span class="line" id="L308"> .expected_var_decl_or_fn => {</span>
<span class="line" id="L309"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected variable declaration or function, found '{s}'"</span>, .{</span>
<span class="line" id="L310"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L311"> });</span>
<span class="line" id="L312"> },</span>
<span class="line" id="L313"> .expected_loop_payload => {</span>
<span class="line" id="L314"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected loop payload, found '{s}'"</span>, .{</span>
<span class="line" id="L315"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L316"> });</span>
<span class="line" id="L317"> },</span>
<span class="line" id="L318"> .expected_container => {</span>
<span class="line" id="L319"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected a struct, enum or union, found '{s}'"</span>, .{</span>
<span class="line" id="L320"> token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)].symbol(),</span>
<span class="line" id="L321"> });</span>
<span class="line" id="L322"> },</span>
<span class="line" id="L323"> .extern_fn_body => {</span>
<span class="line" id="L324"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"extern functions have no body"</span>);</span>
<span class="line" id="L325"> },</span>
<span class="line" id="L326"> .extra_addrspace_qualifier => {</span>
<span class="line" id="L327"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"extra addrspace qualifier"</span>);</span>
<span class="line" id="L328"> },</span>
<span class="line" id="L329"> .extra_align_qualifier => {</span>
<span class="line" id="L330"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"extra align qualifier"</span>);</span>
<span class="line" id="L331"> },</span>
<span class="line" id="L332"> .extra_allowzero_qualifier => {</span>
<span class="line" id="L333"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"extra allowzero qualifier"</span>);</span>
<span class="line" id="L334"> },</span>
<span class="line" id="L335"> .extra_const_qualifier => {</span>
<span class="line" id="L336"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"extra const qualifier"</span>);</span>
<span class="line" id="L337"> },</span>
<span class="line" id="L338"> .extra_volatile_qualifier => {</span>
<span class="line" id="L339"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"extra volatile qualifier"</span>);</span>
<span class="line" id="L340"> },</span>
<span class="line" id="L341"> .ptr_mod_on_array_child_type => {</span>
<span class="line" id="L342"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"pointer modifier '{s}' not allowed on array child type"</span>, .{</span>
<span class="line" id="L343"> token_tags[parse_error.token].symbol(),</span>
<span class="line" id="L344"> });</span>
<span class="line" id="L345"> },</span>
<span class="line" id="L346"> .invalid_bit_range => {</span>
<span class="line" id="L347"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"bit range not allowed on slices and arrays"</span>);</span>
<span class="line" id="L348"> },</span>
<span class="line" id="L349"> .same_line_doc_comment => {</span>
<span class="line" id="L350"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"same line documentation comment"</span>);</span>
<span class="line" id="L351"> },</span>
<span class="line" id="L352"> .unattached_doc_comment => {</span>
<span class="line" id="L353"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"unattached documentation comment"</span>);</span>
<span class="line" id="L354"> },</span>
<span class="line" id="L355"> .test_doc_comment => {</span>
<span class="line" id="L356"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"documentation comments cannot be attached to tests"</span>);</span>
<span class="line" id="L357"> },</span>
<span class="line" id="L358"> .comptime_doc_comment => {</span>
<span class="line" id="L359"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"documentation comments cannot be attached to comptime blocks"</span>);</span>
<span class="line" id="L360"> },</span>
<span class="line" id="L361"> .varargs_nonfinal => {</span>
<span class="line" id="L362"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"function prototype has parameter after varargs"</span>);</span>
<span class="line" id="L363"> },</span>
<span class="line" id="L364"> .expected_continue_expr => {</span>
<span class="line" id="L365"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"expected ':' before while continue expression"</span>);</span>
<span class="line" id="L366"> },</span>
<span class="line" id="L367"></span>
<span class="line" id="L368"> .expected_semi_after_decl => {</span>
<span class="line" id="L369"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"expected ';' after declaration"</span>);</span>
<span class="line" id="L370"> },</span>
<span class="line" id="L371"> .expected_semi_after_stmt => {</span>
<span class="line" id="L372"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"expected ';' after statement"</span>);</span>
<span class="line" id="L373"> },</span>
<span class="line" id="L374"> .expected_comma_after_field => {</span>
<span class="line" id="L375"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"expected ',' after field"</span>);</span>
<span class="line" id="L376"> },</span>
<span class="line" id="L377"> .expected_comma_after_arg => {</span>
<span class="line" id="L378"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"expected ',' after argument"</span>);</span>
<span class="line" id="L379"> },</span>
<span class="line" id="L380"> .expected_comma_after_param => {</span>
<span class="line" id="L381"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"expected ',' after parameter"</span>);</span>
<span class="line" id="L382"> },</span>
<span class="line" id="L383"> .expected_comma_after_initializer => {</span>
<span class="line" id="L384"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"expected ',' after initializer"</span>);</span>
<span class="line" id="L385"> },</span>
<span class="line" id="L386"> .expected_comma_after_switch_prong => {</span>
<span class="line" id="L387"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"expected ',' after switch prong"</span>);</span>
<span class="line" id="L388"> },</span>
<span class="line" id="L389"> .expected_comma_after_for_operand => {</span>
<span class="line" id="L390"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"expected ',' after for operand"</span>);</span>
<span class="line" id="L391"> },</span>
<span class="line" id="L392"> .expected_comma_after_capture => {</span>
<span class="line" id="L393"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"expected ',' after for capture"</span>);</span>
<span class="line" id="L394"> },</span>
<span class="line" id="L395"> .expected_initializer => {</span>
<span class="line" id="L396"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"expected field initializer"</span>);</span>
<span class="line" id="L397"> },</span>
<span class="line" id="L398"> .mismatched_binary_op_whitespace => {</span>
<span class="line" id="L399"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"binary operator `{s}` has whitespace on one side, but not the other."</span>, .{token_tags[parse_error.token].lexeme().?});</span>
<span class="line" id="L400"> },</span>
<span class="line" id="L401"> .invalid_ampersand_ampersand => {</span>
<span class="line" id="L402"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"ambiguous use of '&&'; use 'and' for logical AND, or change whitespace to ' & &' for bitwise AND"</span>);</span>
<span class="line" id="L403"> },</span>
<span class="line" id="L404"> .c_style_container => {</span>
<span class="line" id="L405"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"'{s} {s}' is invalid"</span>, .{</span>
<span class="line" id="L406"> parse_error.extra.expected_tag.symbol(), tree.tokenSlice(parse_error.token),</span>
<span class="line" id="L407"> });</span>
<span class="line" id="L408"> },</span>
<span class="line" id="L409"> .zig_style_container => {</span>
<span class="line" id="L410"> <span class="tok-kw">return</span> stream.print(<span class="tok-str">"to declare a container do 'const {s} = {s}'"</span>, .{</span>
<span class="line" id="L411"> tree.tokenSlice(parse_error.token), parse_error.extra.expected_tag.symbol(),</span>
<span class="line" id="L412"> });</span>
<span class="line" id="L413"> },</span>
<span class="line" id="L414"> .previous_field => {</span>
<span class="line" id="L415"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"field before declarations here"</span>);</span>
<span class="line" id="L416"> },</span>
<span class="line" id="L417"> .next_field => {</span>
<span class="line" id="L418"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"field after declarations here"</span>);</span>
<span class="line" id="L419"> },</span>
<span class="line" id="L420"> .expected_var_const => {</span>
<span class="line" id="L421"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"expected 'var' or 'const' before variable declaration"</span>);</span>
<span class="line" id="L422"> },</span>
<span class="line" id="L423"> .wrong_equal_var_decl => {</span>
<span class="line" id="L424"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"variable initialized with '==' instead of '='"</span>);</span>
<span class="line" id="L425"> },</span>
<span class="line" id="L426"> .var_const_decl => {</span>
<span class="line" id="L427"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"use 'var' or 'const' to declare variable"</span>);</span>
<span class="line" id="L428"> },</span>
<span class="line" id="L429"> .extra_for_capture => {</span>
<span class="line" id="L430"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"excess for captures"</span>);</span>
<span class="line" id="L431"> },</span>
<span class="line" id="L432"> .for_input_not_captured => {</span>
<span class="line" id="L433"> <span class="tok-kw">return</span> stream.writeAll(<span class="tok-str">"for input is not captured"</span>);</span>
<span class="line" id="L434"> },</span>
<span class="line" id="L435"></span>
<span class="line" id="L436"> .expected_token => {</span>
<span class="line" id="L437"> <span class="tok-kw">const</span> found_tag = token_tags[parse_error.token + <span class="tok-builtin">@intFromBool</span>(parse_error.token_is_prev)];</span>
<span class="line" id="L438"> <span class="tok-kw">const</span> expected_symbol = parse_error.extra.expected_tag.symbol();</span>
<span class="line" id="L439"> <span class="tok-kw">switch</span> (found_tag) {</span>
<span class="line" id="L440"> .invalid => <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected '{s}', found invalid bytes"</span>, .{</span>
<span class="line" id="L441"> expected_symbol,</span>
<span class="line" id="L442"> }),</span>
<span class="line" id="L443"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> stream.print(<span class="tok-str">"expected '{s}', found '{s}'"</span>, .{</span>
<span class="line" id="L444"> expected_symbol, found_tag.symbol(),</span>
<span class="line" id="L445"> }),</span>
<span class="line" id="L446"> }</span>
<span class="line" id="L447"> },</span>
<span class="line" id="L448"> }</span>
<span class="line" id="L449">}</span>
<span class="line" id="L450"></span>
<span class="line" id="L451"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">firstToken</span>(tree: Ast, node: Node.Index) TokenIndex {</span>
<span class="line" id="L452"> <span class="tok-kw">const</span> tags = tree.nodes.items(.tag);</span>
<span class="line" id="L453"> <span class="tok-kw">const</span> datas = tree.nodes.items(.data);</span>
<span class="line" id="L454"> <span class="tok-kw">const</span> main_tokens = tree.nodes.items(.main_token);</span>
<span class="line" id="L455"> <span class="tok-kw">const</span> token_tags = tree.tokens.items(.tag);</span>
<span class="line" id="L456"> <span class="tok-kw">var</span> end_offset: TokenIndex = <span class="tok-number">0</span>;</span>
<span class="line" id="L457"> <span class="tok-kw">var</span> n = node;</span>
<span class="line" id="L458"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) <span class="tok-kw">switch</span> (tags[n]) {</span>
<span class="line" id="L459"> .root => <span class="tok-kw">return</span> <span class="tok-number">0</span>,</span>
<span class="line" id="L460"></span>
<span class="line" id="L461"> .test_decl,</span>
<span class="line" id="L462"> .@"errdefer",</span>
<span class="line" id="L463"> .@"defer",</span>
<span class="line" id="L464"> .bool_not,</span>
<span class="line" id="L465"> .negation,</span>
<span class="line" id="L466"> .bit_not,</span>
<span class="line" id="L467"> .negation_wrap,</span>
<span class="line" id="L468"> .address_of,</span>
<span class="line" id="L469"> .@"try",</span>
<span class="line" id="L470"> .@"await",</span>
<span class="line" id="L471"> .optional_type,</span>
<span class="line" id="L472"> .@"switch",</span>
<span class="line" id="L473"> .switch_comma,</span>
<span class="line" id="L474"> .if_simple,</span>
<span class="line" id="L475"> .@"if",</span>
<span class="line" id="L476"> .@"suspend",</span>
<span class="line" id="L477"> .@"resume",</span>
<span class="line" id="L478"> .@"continue",</span>
<span class="line" id="L479"> .@"break",</span>
<span class="line" id="L480"> .@"return",</span>
<span class="line" id="L481"> .anyframe_type,</span>
<span class="line" id="L482"> .identifier,</span>
<span class="line" id="L483"> .anyframe_literal,</span>
<span class="line" id="L484"> .char_literal,</span>
<span class="line" id="L485"> .number_literal,</span>
<span class="line" id="L486"> .unreachable_literal,</span>
<span class="line" id="L487"> .string_literal,</span>
<span class="line" id="L488"> .multiline_string_literal,</span>
<span class="line" id="L489"> .grouped_expression,</span>
<span class="line" id="L490"> .builtin_call_two,</span>
<span class="line" id="L491"> .builtin_call_two_comma,</span>
<span class="line" id="L492"> .builtin_call,</span>
<span class="line" id="L493"> .builtin_call_comma,</span>
<span class="line" id="L494"> .error_set_decl,</span>
<span class="line" id="L495"> .@"comptime",</span>
<span class="line" id="L496"> .@"nosuspend",</span>
<span class="line" id="L497"> .asm_simple,</span>
<span class="line" id="L498"> .@"asm",</span>
<span class="line" id="L499"> .array_type,</span>
<span class="line" id="L500"> .array_type_sentinel,</span>
<span class="line" id="L501"> .error_value,</span>
<span class="line" id="L502"> => <span class="tok-kw">return</span> main_tokens[n] - end_offset,</span>
<span class="line" id="L503"></span>
<span class="line" id="L504"> .array_init_dot,</span>
<span class="line" id="L505"> .array_init_dot_comma,</span>
<span class="line" id="L506"> .array_init_dot_two,</span>
<span class="line" id="L507"> .array_init_dot_two_comma,</span>
<span class="line" id="L508"> .struct_init_dot,</span>
<span class="line" id="L509"> .struct_init_dot_comma,</span>
<span class="line" id="L510"> .struct_init_dot_two,</span>
<span class="line" id="L511"> .struct_init_dot_two_comma,</span>
<span class="line" id="L512"> .enum_literal,</span>
<span class="line" id="L513"> => <span class="tok-kw">return</span> main_tokens[n] - <span class="tok-number">1</span> - end_offset,</span>
<span class="line" id="L514"></span>
<span class="line" id="L515"> .@"catch",</span>
<span class="line" id="L516"> .field_access,</span>
<span class="line" id="L517"> .unwrap_optional,</span>
<span class="line" id="L518"> .equal_equal,</span>
<span class="line" id="L519"> .bang_equal,</span>
<span class="line" id="L520"> .less_than,</span>
<span class="line" id="L521"> .greater_than,</span>
<span class="line" id="L522"> .less_or_equal,</span>
<span class="line" id="L523"> .greater_or_equal,</span>
<span class="line" id="L524"> .assign_mul,</span>
<span class="line" id="L525"> .assign_div,</span>
<span class="line" id="L526"> .assign_mod,</span>
<span class="line" id="L527"> .assign_add,</span>
<span class="line" id="L528"> .assign_sub,</span>
<span class="line" id="L529"> .assign_shl,</span>
<span class="line" id="L530"> .assign_shl_sat,</span>
<span class="line" id="L531"> .assign_shr,</span>
<span class="line" id="L532"> .assign_bit_and,</span>
<span class="line" id="L533"> .assign_bit_xor,</span>
<span class="line" id="L534"> .assign_bit_or,</span>
<span class="line" id="L535"> .assign_mul_wrap,</span>
<span class="line" id="L536"> .assign_add_wrap,</span>
<span class="line" id="L537"> .assign_sub_wrap,</span>
<span class="line" id="L538"> .assign_mul_sat,</span>
<span class="line" id="L539"> .assign_add_sat,</span>
<span class="line" id="L540"> .assign_sub_sat,</span>
<span class="line" id="L541"> .assign,</span>
<span class="line" id="L542"> .merge_error_sets,</span>
<span class="line" id="L543"> .mul,</span>
<span class="line" id="L544"> .div,</span>
<span class="line" id="L545"> .mod,</span>
<span class="line" id="L546"> .array_mult,</span>
<span class="line" id="L547"> .mul_wrap,</span>
<span class="line" id="L548"> .mul_sat,</span>
<span class="line" id="L549"> .add,</span>
<span class="line" id="L550"> .sub,</span>
<span class="line" id="L551"> .array_cat,</span>
<span class="line" id="L552"> .add_wrap,</span>
<span class="line" id="L553"> .sub_wrap,</span>
<span class="line" id="L554"> .add_sat,</span>
<span class="line" id="L555"> .sub_sat,</span>
<span class="line" id="L556"> .shl,</span>
<span class="line" id="L557"> .shl_sat,</span>
<span class="line" id="L558"> .shr,</span>
<span class="line" id="L559"> .bit_and,</span>
<span class="line" id="L560"> .bit_xor,</span>
<span class="line" id="L561"> .bit_or,</span>
<span class="line" id="L562"> .@"orelse",</span>
<span class="line" id="L563"> .bool_and,</span>
<span class="line" id="L564"> .bool_or,</span>
<span class="line" id="L565"> .slice_open,</span>
<span class="line" id="L566"> .slice,</span>
<span class="line" id="L567"> .slice_sentinel,</span>
<span class="line" id="L568"> .deref,</span>
<span class="line" id="L569"> .array_access,</span>
<span class="line" id="L570"> .array_init_one,</span>
<span class="line" id="L571"> .array_init_one_comma,</span>
<span class="line" id="L572"> .array_init,</span>
<span class="line" id="L573"> .array_init_comma,</span>
<span class="line" id="L574"> .struct_init_one,</span>
<span class="line" id="L575"> .struct_init_one_comma,</span>
<span class="line" id="L576"> .struct_init,</span>
<span class="line" id="L577"> .struct_init_comma,</span>
<span class="line" id="L578"> .call_one,</span>
<span class="line" id="L579"> .call_one_comma,</span>
<span class="line" id="L580"> .call,</span>
<span class="line" id="L581"> .call_comma,</span>
<span class="line" id="L582"> .switch_range,</span>
<span class="line" id="L583"> .for_range,</span>
<span class="line" id="L584"> .error_union,</span>
<span class="line" id="L585"> => n = datas[n].lhs,</span>
<span class="line" id="L586"></span>
<span class="line" id="L587"> .fn_decl,</span>
<span class="line" id="L588"> .fn_proto_simple,</span>
<span class="line" id="L589"> .fn_proto_multi,</span>
<span class="line" id="L590"> .fn_proto_one,</span>
<span class="line" id="L591"> .fn_proto,</span>
<span class="line" id="L592"> => {</span>
<span class="line" id="L593"> <span class="tok-kw">var</span> i = main_tokens[n]; <span class="tok-comment">// fn token</span>
</span>
<span class="line" id="L594"> <span class="tok-kw">while</span> (i > <span class="tok-number">0</span>) {</span>
<span class="line" id="L595"> i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L596"> <span class="tok-kw">switch</span> (token_tags[i]) {</span>
<span class="line" id="L597"> .keyword_extern,</span>
<span class="line" id="L598"> .keyword_export,</span>
<span class="line" id="L599"> .keyword_pub,</span>
<span class="line" id="L600"> .keyword_inline,</span>
<span class="line" id="L601"> .keyword_noinline,</span>
<span class="line" id="L602"> .string_literal,</span>
<span class="line" id="L603"> => <span class="tok-kw">continue</span>,</span>
<span class="line" id="L604"></span>
<span class="line" id="L605"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> i + <span class="tok-number">1</span> - end_offset,</span>
<span class="line" id="L606"> }</span>
<span class="line" id="L607"> }</span>
<span class="line" id="L608"> <span class="tok-kw">return</span> i - end_offset;</span>
<span class="line" id="L609"> },</span>
<span class="line" id="L610"></span>
<span class="line" id="L611"> .@"usingnamespace" => {</span>
<span class="line" id="L612"> <span class="tok-kw">const</span> main_token = main_tokens[n];</span>
<span class="line" id="L613"> <span class="tok-kw">if</span> (main_token > <span class="tok-number">0</span> <span class="tok-kw">and</span> token_tags[main_token - <span class="tok-number">1</span>] == .keyword_pub) {</span>
<span class="line" id="L614"> end_offset += <span class="tok-number">1</span>;</span>
<span class="line" id="L615"> }</span>
<span class="line" id="L616"> <span class="tok-kw">return</span> main_token - end_offset;</span>
<span class="line" id="L617"> },</span>
<span class="line" id="L618"></span>
<span class="line" id="L619"> .async_call_one,</span>
<span class="line" id="L620"> .async_call_one_comma,</span>
<span class="line" id="L621"> .async_call,</span>
<span class="line" id="L622"> .async_call_comma,</span>
<span class="line" id="L623"> => {</span>
<span class="line" id="L624"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// async token</span>
</span>
<span class="line" id="L625"> n = datas[n].lhs;</span>
<span class="line" id="L626"> },</span>
<span class="line" id="L627"></span>
<span class="line" id="L628"> .container_field_init,</span>
<span class="line" id="L629"> .container_field_align,</span>
<span class="line" id="L630"> .container_field,</span>
<span class="line" id="L631"> => {</span>
<span class="line" id="L632"> <span class="tok-kw">const</span> name_token = main_tokens[n];</span>
<span class="line" id="L633"> <span class="tok-kw">if</span> (token_tags[name_token] != .keyword_comptime <span class="tok-kw">and</span> name_token > <span class="tok-number">0</span> <span class="tok-kw">and</span> token_tags[name_token - <span class="tok-number">1</span>] == .keyword_comptime) {</span>
<span class="line" id="L634"> end_offset += <span class="tok-number">1</span>;</span>
<span class="line" id="L635"> }</span>
<span class="line" id="L636"> <span class="tok-kw">return</span> name_token - end_offset;</span>
<span class="line" id="L637"> },</span>
<span class="line" id="L638"></span>
<span class="line" id="L639"> .global_var_decl,</span>
<span class="line" id="L640"> .local_var_decl,</span>
<span class="line" id="L641"> .simple_var_decl,</span>
<span class="line" id="L642"> .aligned_var_decl,</span>
<span class="line" id="L643"> => {</span>
<span class="line" id="L644"> <span class="tok-kw">var</span> i = main_tokens[n]; <span class="tok-comment">// mut token</span>
</span>
<span class="line" id="L645"> <span class="tok-kw">while</span> (i > <span class="tok-number">0</span>) {</span>
<span class="line" id="L646"> i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L647"> <span class="tok-kw">switch</span> (token_tags[i]) {</span>
<span class="line" id="L648"> .keyword_extern,</span>
<span class="line" id="L649"> .keyword_export,</span>
<span class="line" id="L650"> .keyword_comptime,</span>
<span class="line" id="L651"> .keyword_pub,</span>
<span class="line" id="L652"> .keyword_threadlocal,</span>
<span class="line" id="L653"> .string_literal,</span>
<span class="line" id="L654"> => <span class="tok-kw">continue</span>,</span>
<span class="line" id="L655"></span>
<span class="line" id="L656"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> i + <span class="tok-number">1</span> - end_offset,</span>
<span class="line" id="L657"> }</span>
<span class="line" id="L658"> }</span>
<span class="line" id="L659"> <span class="tok-kw">return</span> i - end_offset;</span>
<span class="line" id="L660"> },</span>
<span class="line" id="L661"></span>
<span class="line" id="L662"> .block,</span>
<span class="line" id="L663"> .block_semicolon,</span>
<span class="line" id="L664"> .block_two,</span>
<span class="line" id="L665"> .block_two_semicolon,</span>
<span class="line" id="L666"> => {</span>
<span class="line" id="L667"> <span class="tok-comment">// Look for a label.</span>
</span>
<span class="line" id="L668"> <span class="tok-kw">const</span> lbrace = main_tokens[n];</span>
<span class="line" id="L669"> <span class="tok-kw">if</span> (token_tags[lbrace - <span class="tok-number">1</span>] == .colon <span class="tok-kw">and</span></span>
<span class="line" id="L670"> token_tags[lbrace - <span class="tok-number">2</span>] == .identifier)</span>
<span class="line" id="L671"> {</span>
<span class="line" id="L672"> end_offset += <span class="tok-number">2</span>;</span>
<span class="line" id="L673"> }</span>
<span class="line" id="L674"> <span class="tok-kw">return</span> lbrace - end_offset;</span>
<span class="line" id="L675"> },</span>
<span class="line" id="L676"></span>
<span class="line" id="L677"> .container_decl,</span>
<span class="line" id="L678"> .container_decl_trailing,</span>
<span class="line" id="L679"> .container_decl_two,</span>
<span class="line" id="L680"> .container_decl_two_trailing,</span>
<span class="line" id="L681"> .container_decl_arg,</span>
<span class="line" id="L682"> .container_decl_arg_trailing,</span>
<span class="line" id="L683"> .tagged_union,</span>
<span class="line" id="L684"> .tagged_union_trailing,</span>
<span class="line" id="L685"> .tagged_union_two,</span>
<span class="line" id="L686"> .tagged_union_two_trailing,</span>
<span class="line" id="L687"> .tagged_union_enum_tag,</span>
<span class="line" id="L688"> .tagged_union_enum_tag_trailing,</span>
<span class="line" id="L689"> => {</span>
<span class="line" id="L690"> <span class="tok-kw">const</span> main_token = main_tokens[n];</span>
<span class="line" id="L691"> <span class="tok-kw">switch</span> (token_tags[main_token -| <span class="tok-number">1</span>]) {</span>
<span class="line" id="L692"> .keyword_packed, .keyword_extern => end_offset += <span class="tok-number">1</span>,</span>
<span class="line" id="L693"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L694"> }</span>
<span class="line" id="L695"> <span class="tok-kw">return</span> main_token - end_offset;</span>
<span class="line" id="L696"> },</span>
<span class="line" id="L697"></span>
<span class="line" id="L698"> .ptr_type_aligned,</span>
<span class="line" id="L699"> .ptr_type_sentinel,</span>
<span class="line" id="L700"> .ptr_type,</span>
<span class="line" id="L701"> .ptr_type_bit_range,</span>
<span class="line" id="L702"> => {</span>
<span class="line" id="L703"> <span class="tok-kw">const</span> main_token = main_tokens[n];</span>
<span class="line" id="L704"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (token_tags[main_token]) {</span>
<span class="line" id="L705"> .asterisk,</span>
<span class="line" id="L706"> .asterisk_asterisk,</span>
<span class="line" id="L707"> => <span class="tok-kw">switch</span> (token_tags[main_token -| <span class="tok-number">1</span>]) {</span>
<span class="line" id="L708"> .l_bracket => main_token -| <span class="tok-number">1</span>,</span>
<span class="line" id="L709"> <span class="tok-kw">else</span> => main_token,</span>
<span class="line" id="L710"> },</span>
<span class="line" id="L711"> .l_bracket => main_token,</span>
<span class="line" id="L712"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L713"> } - end_offset;</span>
<span class="line" id="L714"> },</span>
<span class="line" id="L715"></span>
<span class="line" id="L716"> .switch_case_one => {</span>
<span class="line" id="L717"> <span class="tok-kw">if</span> (datas[n].lhs == <span class="tok-number">0</span>) {</span>
<span class="line" id="L718"> <span class="tok-kw">return</span> main_tokens[n] - <span class="tok-number">1</span> - end_offset; <span class="tok-comment">// else token</span>
</span>
<span class="line" id="L719"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L720"> n = datas[n].lhs;</span>
<span class="line" id="L721"> }</span>
<span class="line" id="L722"> },</span>
<span class="line" id="L723"> .switch_case_inline_one => {</span>
<span class="line" id="L724"> <span class="tok-kw">if</span> (datas[n].lhs == <span class="tok-number">0</span>) {</span>
<span class="line" id="L725"> <span class="tok-kw">return</span> main_tokens[n] - <span class="tok-number">2</span> - end_offset; <span class="tok-comment">// else token</span>
</span>
<span class="line" id="L726"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L727"> <span class="tok-kw">return</span> firstToken(tree, datas[n].lhs) - <span class="tok-number">1</span>;</span>
<span class="line" id="L728"> }</span>
<span class="line" id="L729"> },</span>
<span class="line" id="L730"> .switch_case => {</span>
<span class="line" id="L731"> <span class="tok-kw">const</span> extra = tree.extraData(datas[n].lhs, Node.SubRange);</span>
<span class="line" id="L732"> assert(extra.end - extra.start > <span class="tok-number">0</span>);</span>
<span class="line" id="L733"> n = tree.extra_data[extra.start];</span>
<span class="line" id="L734"> },</span>
<span class="line" id="L735"> .switch_case_inline => {</span>
<span class="line" id="L736"> <span class="tok-kw">const</span> extra = tree.extraData(datas[n].lhs, Node.SubRange);</span>
<span class="line" id="L737"> assert(extra.end - extra.start > <span class="tok-number">0</span>);</span>
<span class="line" id="L738"> <span class="tok-kw">return</span> firstToken(tree, tree.extra_data[extra.start]) - <span class="tok-number">1</span>;</span>
<span class="line" id="L739"> },</span>
<span class="line" id="L740"></span>
<span class="line" id="L741"> .asm_output, .asm_input => {</span>
<span class="line" id="L742"> assert(token_tags[main_tokens[n] - <span class="tok-number">1</span>] == .l_bracket);</span>
<span class="line" id="L743"> <span class="tok-kw">return</span> main_tokens[n] - <span class="tok-number">1</span> - end_offset;</span>
<span class="line" id="L744"> },</span>
<span class="line" id="L745"></span>
<span class="line" id="L746"> .while_simple,</span>
<span class="line" id="L747"> .while_cont,</span>
<span class="line" id="L748"> .@"while",</span>
<span class="line" id="L749"> .for_simple,</span>
<span class="line" id="L750"> .@"for",</span>
<span class="line" id="L751"> => {</span>
<span class="line" id="L752"> <span class="tok-comment">// Look for a label and inline.</span>
</span>
<span class="line" id="L753"> <span class="tok-kw">const</span> main_token = main_tokens[n];</span>
<span class="line" id="L754"> <span class="tok-kw">var</span> result = main_token;</span>
<span class="line" id="L755"> <span class="tok-kw">if</span> (token_tags[result - <span class="tok-number">1</span>] == .keyword_inline) {</span>
<span class="line" id="L756"> result -= <span class="tok-number">1</span>;</span>
<span class="line" id="L757"> }</span>
<span class="line" id="L758"> <span class="tok-kw">if</span> (token_tags[result - <span class="tok-number">1</span>] == .colon) {</span>
<span class="line" id="L759"> result -= <span class="tok-number">2</span>;</span>
<span class="line" id="L760"> }</span>
<span class="line" id="L761"> <span class="tok-kw">return</span> result - end_offset;</span>
<span class="line" id="L762"> },</span>
<span class="line" id="L763"> };</span>
<span class="line" id="L764">}</span>
<span class="line" id="L765"></span>
<span class="line" id="L766"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">lastToken</span>(tree: Ast, node: Node.Index) TokenIndex {</span>
<span class="line" id="L767"> <span class="tok-kw">const</span> tags = tree.nodes.items(.tag);</span>
<span class="line" id="L768"> <span class="tok-kw">const</span> datas = tree.nodes.items(.data);</span>
<span class="line" id="L769"> <span class="tok-kw">const</span> main_tokens = tree.nodes.items(.main_token);</span>
<span class="line" id="L770"> <span class="tok-kw">const</span> token_starts = tree.tokens.items(.start);</span>
<span class="line" id="L771"> <span class="tok-kw">const</span> token_tags = tree.tokens.items(.tag);</span>
<span class="line" id="L772"> <span class="tok-kw">var</span> n = node;</span>
<span class="line" id="L773"> <span class="tok-kw">var</span> end_offset: TokenIndex = <span class="tok-number">0</span>;</span>
<span class="line" id="L774"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) <span class="tok-kw">switch</span> (tags[n]) {</span>
<span class="line" id="L775"> .root => <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(TokenIndex, <span class="tok-builtin">@intCast</span>(tree.tokens.len - <span class="tok-number">1</span>)),</span>
<span class="line" id="L776"></span>
<span class="line" id="L777"> .@"usingnamespace",</span>
<span class="line" id="L778"> .bool_not,</span>
<span class="line" id="L779"> .negation,</span>
<span class="line" id="L780"> .bit_not,</span>
<span class="line" id="L781"> .negation_wrap,</span>
<span class="line" id="L782"> .address_of,</span>
<span class="line" id="L783"> .@"try",</span>
<span class="line" id="L784"> .@"await",</span>
<span class="line" id="L785"> .optional_type,</span>
<span class="line" id="L786"> .@"resume",</span>
<span class="line" id="L787"> .@"nosuspend",</span>
<span class="line" id="L788"> .@"comptime",</span>
<span class="line" id="L789"> => n = datas[n].lhs,</span>
<span class="line" id="L790"></span>
<span class="line" id="L791"> .test_decl,</span>
<span class="line" id="L792"> .@"errdefer",</span>
<span class="line" id="L793"> .@"defer",</span>
<span class="line" id="L794"> .@"catch",</span>
<span class="line" id="L795"> .equal_equal,</span>
<span class="line" id="L796"> .bang_equal,</span>
<span class="line" id="L797"> .less_than,</span>
<span class="line" id="L798"> .greater_than,</span>
<span class="line" id="L799"> .less_or_equal,</span>
<span class="line" id="L800"> .greater_or_equal,</span>
<span class="line" id="L801"> .assign_mul,</span>
<span class="line" id="L802"> .assign_div,</span>
<span class="line" id="L803"> .assign_mod,</span>
<span class="line" id="L804"> .assign_add,</span>
<span class="line" id="L805"> .assign_sub,</span>
<span class="line" id="L806"> .assign_shl,</span>
<span class="line" id="L807"> .assign_shl_sat,</span>
<span class="line" id="L808"> .assign_shr,</span>
<span class="line" id="L809"> .assign_bit_and,</span>
<span class="line" id="L810"> .assign_bit_xor,</span>
<span class="line" id="L811"> .assign_bit_or,</span>
<span class="line" id="L812"> .assign_mul_wrap,</span>
<span class="line" id="L813"> .assign_add_wrap,</span>
<span class="line" id="L814"> .assign_sub_wrap,</span>
<span class="line" id="L815"> .assign_mul_sat,</span>
<span class="line" id="L816"> .assign_add_sat,</span>
<span class="line" id="L817"> .assign_sub_sat,</span>
<span class="line" id="L818"> .assign,</span>
<span class="line" id="L819"> .merge_error_sets,</span>
<span class="line" id="L820"> .mul,</span>
<span class="line" id="L821"> .div,</span>
<span class="line" id="L822"> .mod,</span>
<span class="line" id="L823"> .array_mult,</span>
<span class="line" id="L824"> .mul_wrap,</span>
<span class="line" id="L825"> .mul_sat,</span>
<span class="line" id="L826"> .add,</span>
<span class="line" id="L827"> .sub,</span>
<span class="line" id="L828"> .array_cat,</span>
<span class="line" id="L829"> .add_wrap,</span>
<span class="line" id="L830"> .sub_wrap,</span>
<span class="line" id="L831"> .add_sat,</span>
<span class="line" id="L832"> .sub_sat,</span>
<span class="line" id="L833"> .shl,</span>
<span class="line" id="L834"> .shl_sat,</span>
<span class="line" id="L835"> .shr,</span>
<span class="line" id="L836"> .bit_and,</span>
<span class="line" id="L837"> .bit_xor,</span>
<span class="line" id="L838"> .bit_or,</span>
<span class="line" id="L839"> .@"orelse",</span>
<span class="line" id="L840"> .bool_and,</span>
<span class="line" id="L841"> .bool_or,</span>
<span class="line" id="L842"> .anyframe_type,</span>
<span class="line" id="L843"> .error_union,</span>
<span class="line" id="L844"> .if_simple,</span>
<span class="line" id="L845"> .while_simple,</span>
<span class="line" id="L846"> .for_simple,</span>
<span class="line" id="L847"> .fn_proto_simple,</span>
<span class="line" id="L848"> .fn_proto_multi,</span>
<span class="line" id="L849"> .ptr_type_aligned,</span>
<span class="line" id="L850"> .ptr_type_sentinel,</span>
<span class="line" id="L851"> .ptr_type,</span>
<span class="line" id="L852"> .ptr_type_bit_range,</span>
<span class="line" id="L853"> .array_type,</span>
<span class="line" id="L854"> .switch_case_one,</span>
<span class="line" id="L855"> .switch_case_inline_one,</span>
<span class="line" id="L856"> .switch_case,</span>
<span class="line" id="L857"> .switch_case_inline,</span>
<span class="line" id="L858"> .switch_range,</span>
<span class="line" id="L859"> => n = datas[n].rhs,</span>
<span class="line" id="L860"></span>
<span class="line" id="L861"> .for_range => <span class="tok-kw">if</span> (datas[n].rhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L862"> n = datas[n].rhs;</span>
<span class="line" id="L863"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L864"> <span class="tok-kw">return</span> main_tokens[n] + end_offset;</span>
<span class="line" id="L865"> },</span>
<span class="line" id="L866"></span>
<span class="line" id="L867"> .field_access,</span>
<span class="line" id="L868"> .unwrap_optional,</span>
<span class="line" id="L869"> .grouped_expression,</span>
<span class="line" id="L870"> .multiline_string_literal,</span>
<span class="line" id="L871"> .error_set_decl,</span>
<span class="line" id="L872"> .asm_simple,</span>
<span class="line" id="L873"> .asm_output,</span>
<span class="line" id="L874"> .asm_input,</span>
<span class="line" id="L875"> .error_value,</span>
<span class="line" id="L876"> => <span class="tok-kw">return</span> datas[n].rhs + end_offset,</span>
<span class="line" id="L877"></span>
<span class="line" id="L878"> .anyframe_literal,</span>
<span class="line" id="L879"> .char_literal,</span>
<span class="line" id="L880"> .number_literal,</span>
<span class="line" id="L881"> .unreachable_literal,</span>
<span class="line" id="L882"> .identifier,</span>
<span class="line" id="L883"> .deref,</span>
<span class="line" id="L884"> .enum_literal,</span>
<span class="line" id="L885"> .string_literal,</span>
<span class="line" id="L886"> => <span class="tok-kw">return</span> main_tokens[n] + end_offset,</span>
<span class="line" id="L887"></span>
<span class="line" id="L888"> .@"return" => <span class="tok-kw">if</span> (datas[n].lhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L889"> n = datas[n].lhs;</span>
<span class="line" id="L890"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L891"> <span class="tok-kw">return</span> main_tokens[n] + end_offset;</span>
<span class="line" id="L892"> },</span>
<span class="line" id="L893"></span>
<span class="line" id="L894"> .call, .async_call => {</span>
<span class="line" id="L895"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen</span>
</span>
<span class="line" id="L896"> <span class="tok-kw">const</span> params = tree.extraData(datas[n].rhs, Node.SubRange);</span>
<span class="line" id="L897"> <span class="tok-kw">if</span> (params.end - params.start == <span class="tok-number">0</span>) {</span>
<span class="line" id="L898"> <span class="tok-kw">return</span> main_tokens[n] + end_offset;</span>
<span class="line" id="L899"> }</span>
<span class="line" id="L900"> n = tree.extra_data[params.end - <span class="tok-number">1</span>]; <span class="tok-comment">// last parameter</span>
</span>
<span class="line" id="L901"> },</span>
<span class="line" id="L902"> .tagged_union_enum_tag => {</span>
<span class="line" id="L903"> <span class="tok-kw">const</span> members = tree.extraData(datas[n].rhs, Node.SubRange);</span>
<span class="line" id="L904"> <span class="tok-kw">if</span> (members.end - members.start == <span class="tok-number">0</span>) {</span>
<span class="line" id="L905"> end_offset += <span class="tok-number">4</span>; <span class="tok-comment">// for the rparen + rparen + lbrace + rbrace</span>
</span>
<span class="line" id="L906"> n = datas[n].lhs;</span>
<span class="line" id="L907"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L908"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// for the rbrace</span>
</span>
<span class="line" id="L909"> n = tree.extra_data[members.end - <span class="tok-number">1</span>]; <span class="tok-comment">// last parameter</span>
</span>
<span class="line" id="L910"> }</span>
<span class="line" id="L911"> },</span>
<span class="line" id="L912"> .call_comma,</span>
<span class="line" id="L913"> .async_call_comma,</span>
<span class="line" id="L914"> .tagged_union_enum_tag_trailing,</span>
<span class="line" id="L915"> => {</span>
<span class="line" id="L916"> end_offset += <span class="tok-number">2</span>; <span class="tok-comment">// for the comma/semicolon + rparen/rbrace</span>
</span>
<span class="line" id="L917"> <span class="tok-kw">const</span> params = tree.extraData(datas[n].rhs, Node.SubRange);</span>
<span class="line" id="L918"> assert(params.end > params.start);</span>
<span class="line" id="L919"> n = tree.extra_data[params.end - <span class="tok-number">1</span>]; <span class="tok-comment">// last parameter</span>
</span>
<span class="line" id="L920"> },</span>
<span class="line" id="L921"> .@"switch" => {</span>
<span class="line" id="L922"> <span class="tok-kw">const</span> cases = tree.extraData(datas[n].rhs, Node.SubRange);</span>
<span class="line" id="L923"> <span class="tok-kw">if</span> (cases.end - cases.start == <span class="tok-number">0</span>) {</span>
<span class="line" id="L924"> end_offset += <span class="tok-number">3</span>; <span class="tok-comment">// rparen, lbrace, rbrace</span>
</span>
<span class="line" id="L925"> n = datas[n].lhs; <span class="tok-comment">// condition expression</span>
</span>
<span class="line" id="L926"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L927"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// for the rbrace</span>
</span>
<span class="line" id="L928"> n = tree.extra_data[cases.end - <span class="tok-number">1</span>]; <span class="tok-comment">// last case</span>
</span>
<span class="line" id="L929"> }</span>
<span class="line" id="L930"> },</span>
<span class="line" id="L931"> .container_decl_arg => {</span>
<span class="line" id="L932"> <span class="tok-kw">const</span> members = tree.extraData(datas[n].rhs, Node.SubRange);</span>
<span class="line" id="L933"> <span class="tok-kw">if</span> (members.end - members.start == <span class="tok-number">0</span>) {</span>
<span class="line" id="L934"> end_offset += <span class="tok-number">3</span>; <span class="tok-comment">// for the rparen + lbrace + rbrace</span>
</span>
<span class="line" id="L935"> n = datas[n].lhs;</span>
<span class="line" id="L936"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L937"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// for the rbrace</span>
</span>
<span class="line" id="L938"> n = tree.extra_data[members.end - <span class="tok-number">1</span>]; <span class="tok-comment">// last parameter</span>
</span>
<span class="line" id="L939"> }</span>
<span class="line" id="L940"> },</span>
<span class="line" id="L941"> .@"asm" => {</span>
<span class="line" id="L942"> <span class="tok-kw">const</span> extra = tree.extraData(datas[n].rhs, Node.Asm);</span>
<span class="line" id="L943"> <span class="tok-kw">return</span> extra.rparen + end_offset;</span>
<span class="line" id="L944"> },</span>
<span class="line" id="L945"> .array_init,</span>
<span class="line" id="L946"> .struct_init,</span>
<span class="line" id="L947"> => {</span>
<span class="line" id="L948"> <span class="tok-kw">const</span> elements = tree.extraData(datas[n].rhs, Node.SubRange);</span>
<span class="line" id="L949"> assert(elements.end - elements.start > <span class="tok-number">0</span>);</span>
<span class="line" id="L950"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// for the rbrace</span>
</span>
<span class="line" id="L951"> n = tree.extra_data[elements.end - <span class="tok-number">1</span>]; <span class="tok-comment">// last element</span>
</span>
<span class="line" id="L952"> },</span>
<span class="line" id="L953"> .array_init_comma,</span>
<span class="line" id="L954"> .struct_init_comma,</span>
<span class="line" id="L955"> .container_decl_arg_trailing,</span>
<span class="line" id="L956"> .switch_comma,</span>
<span class="line" id="L957"> => {</span>
<span class="line" id="L958"> <span class="tok-kw">const</span> members = tree.extraData(datas[n].rhs, Node.SubRange);</span>
<span class="line" id="L959"> assert(members.end - members.start > <span class="tok-number">0</span>);</span>
<span class="line" id="L960"> end_offset += <span class="tok-number">2</span>; <span class="tok-comment">// for the comma + rbrace</span>
</span>
<span class="line" id="L961"> n = tree.extra_data[members.end - <span class="tok-number">1</span>]; <span class="tok-comment">// last parameter</span>
</span>
<span class="line" id="L962"> },</span>
<span class="line" id="L963"> .array_init_dot,</span>
<span class="line" id="L964"> .struct_init_dot,</span>
<span class="line" id="L965"> .block,</span>
<span class="line" id="L966"> .container_decl,</span>
<span class="line" id="L967"> .tagged_union,</span>
<span class="line" id="L968"> .builtin_call,</span>
<span class="line" id="L969"> => {</span>
<span class="line" id="L970"> assert(datas[n].rhs - datas[n].lhs > <span class="tok-number">0</span>);</span>
<span class="line" id="L971"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// for the rbrace</span>
</span>
<span class="line" id="L972"> n = tree.extra_data[datas[n].rhs - <span class="tok-number">1</span>]; <span class="tok-comment">// last statement</span>
</span>
<span class="line" id="L973"> },</span>
<span class="line" id="L974"> .array_init_dot_comma,</span>
<span class="line" id="L975"> .struct_init_dot_comma,</span>
<span class="line" id="L976"> .block_semicolon,</span>
<span class="line" id="L977"> .container_decl_trailing,</span>
<span class="line" id="L978"> .tagged_union_trailing,</span>
<span class="line" id="L979"> .builtin_call_comma,</span>
<span class="line" id="L980"> => {</span>
<span class="line" id="L981"> assert(datas[n].rhs - datas[n].lhs > <span class="tok-number">0</span>);</span>
<span class="line" id="L982"> end_offset += <span class="tok-number">2</span>; <span class="tok-comment">// for the comma/semicolon + rbrace/rparen</span>
</span>
<span class="line" id="L983"> n = tree.extra_data[datas[n].rhs - <span class="tok-number">1</span>]; <span class="tok-comment">// last member</span>
</span>
<span class="line" id="L984"> },</span>
<span class="line" id="L985"> .call_one,</span>
<span class="line" id="L986"> .async_call_one,</span>
<span class="line" id="L987"> .array_access,</span>
<span class="line" id="L988"> => {</span>
<span class="line" id="L989"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen/rbracket</span>
</span>
<span class="line" id="L990"> <span class="tok-kw">if</span> (datas[n].rhs == <span class="tok-number">0</span>) {</span>
<span class="line" id="L991"> <span class="tok-kw">return</span> main_tokens[n] + end_offset;</span>
<span class="line" id="L992"> }</span>
<span class="line" id="L993"> n = datas[n].rhs;</span>
<span class="line" id="L994"> },</span>
<span class="line" id="L995"> .array_init_dot_two,</span>
<span class="line" id="L996"> .block_two,</span>
<span class="line" id="L997"> .builtin_call_two,</span>
<span class="line" id="L998"> .struct_init_dot_two,</span>
<span class="line" id="L999"> .container_decl_two,</span>
<span class="line" id="L1000"> .tagged_union_two,</span>
<span class="line" id="L1001"> => {</span>
<span class="line" id="L1002"> <span class="tok-kw">if</span> (datas[n].rhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1003"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen/rbrace</span>
</span>
<span class="line" id="L1004"> n = datas[n].rhs;</span>
<span class="line" id="L1005"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (datas[n].lhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1006"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen/rbrace</span>
</span>
<span class="line" id="L1007"> n = datas[n].lhs;</span>
<span class="line" id="L1008"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1009"> <span class="tok-kw">switch</span> (tags[n]) {</span>
<span class="line" id="L1010"> .array_init_dot_two,</span>
<span class="line" id="L1011"> .block_two,</span>
<span class="line" id="L1012"> .struct_init_dot_two,</span>
<span class="line" id="L1013"> => end_offset += <span class="tok-number">1</span>, <span class="tok-comment">// rbrace</span>
</span>
<span class="line" id="L1014"> .builtin_call_two => end_offset += <span class="tok-number">2</span>, <span class="tok-comment">// lparen/lbrace + rparen/rbrace</span>
</span>
<span class="line" id="L1015"> .container_decl_two => {</span>
<span class="line" id="L1016"> <span class="tok-kw">var</span> i: <span class="tok-type">u32</span> = <span class="tok-number">2</span>; <span class="tok-comment">// lbrace + rbrace</span>
</span>
<span class="line" id="L1017"> <span class="tok-kw">while</span> (token_tags[main_tokens[n] + i] == .container_doc_comment) i += <span class="tok-number">1</span>;</span>
<span class="line" id="L1018"> end_offset += i;</span>
<span class="line" id="L1019"> },</span>
<span class="line" id="L1020"> .tagged_union_two => {</span>
<span class="line" id="L1021"> <span class="tok-kw">var</span> i: <span class="tok-type">u32</span> = <span class="tok-number">5</span>; <span class="tok-comment">// (enum) {}</span>
</span>
<span class="line" id="L1022"> <span class="tok-kw">while</span> (token_tags[main_tokens[n] + i] == .container_doc_comment) i += <span class="tok-number">1</span>;</span>
<span class="line" id="L1023"> end_offset += i;</span>
<span class="line" id="L1024"> },</span>
<span class="line" id="L1025"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L1026"> }</span>
<span class="line" id="L1027"> <span class="tok-kw">return</span> main_tokens[n] + end_offset;</span>
<span class="line" id="L1028"> }</span>
<span class="line" id="L1029"> },</span>
<span class="line" id="L1030"> .array_init_dot_two_comma,</span>
<span class="line" id="L1031"> .builtin_call_two_comma,</span>
<span class="line" id="L1032"> .block_two_semicolon,</span>
<span class="line" id="L1033"> .struct_init_dot_two_comma,</span>
<span class="line" id="L1034"> .container_decl_two_trailing,</span>
<span class="line" id="L1035"> .tagged_union_two_trailing,</span>
<span class="line" id="L1036"> => {</span>
<span class="line" id="L1037"> end_offset += <span class="tok-number">2</span>; <span class="tok-comment">// for the comma/semicolon + rbrace/rparen</span>
</span>
<span class="line" id="L1038"> <span class="tok-kw">if</span> (datas[n].rhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1039"> n = datas[n].rhs;</span>
<span class="line" id="L1040"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (datas[n].lhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1041"> n = datas[n].lhs;</span>
<span class="line" id="L1042"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1043"> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L1044"> }</span>
<span class="line" id="L1045"> },</span>
<span class="line" id="L1046"> .simple_var_decl => {</span>
<span class="line" id="L1047"> <span class="tok-kw">if</span> (datas[n].rhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1048"> n = datas[n].rhs;</span>
<span class="line" id="L1049"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (datas[n].lhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1050"> n = datas[n].lhs;</span>
<span class="line" id="L1051"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1052"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// from mut token to name</span>
</span>
<span class="line" id="L1053"> <span class="tok-kw">return</span> main_tokens[n] + end_offset;</span>
<span class="line" id="L1054"> }</span>
<span class="line" id="L1055"> },</span>
<span class="line" id="L1056"> .aligned_var_decl => {</span>
<span class="line" id="L1057"> <span class="tok-kw">if</span> (datas[n].rhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1058"> n = datas[n].rhs;</span>
<span class="line" id="L1059"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (datas[n].lhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1060"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen</span>
</span>
<span class="line" id="L1061"> n = datas[n].lhs;</span>
<span class="line" id="L1062"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1063"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// from mut token to name</span>
</span>
<span class="line" id="L1064"> <span class="tok-kw">return</span> main_tokens[n] + end_offset;</span>
<span class="line" id="L1065"> }</span>
<span class="line" id="L1066"> },</span>
<span class="line" id="L1067"> .global_var_decl => {</span>
<span class="line" id="L1068"> <span class="tok-kw">if</span> (datas[n].rhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1069"> n = datas[n].rhs;</span>
<span class="line" id="L1070"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1071"> <span class="tok-kw">const</span> extra = tree.extraData(datas[n].lhs, Node.GlobalVarDecl);</span>
<span class="line" id="L1072"> <span class="tok-kw">if</span> (extra.section_node != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1073"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen</span>
</span>
<span class="line" id="L1074"> n = extra.section_node;</span>
<span class="line" id="L1075"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (extra.align_node != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1076"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen</span>
</span>
<span class="line" id="L1077"> n = extra.align_node;</span>
<span class="line" id="L1078"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (extra.type_node != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1079"> n = extra.type_node;</span>
<span class="line" id="L1080"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1081"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// from mut token to name</span>
</span>
<span class="line" id="L1082"> <span class="tok-kw">return</span> main_tokens[n] + end_offset;</span>
<span class="line" id="L1083"> }</span>
<span class="line" id="L1084"> }</span>
<span class="line" id="L1085"> },</span>
<span class="line" id="L1086"> .local_var_decl => {</span>
<span class="line" id="L1087"> <span class="tok-kw">if</span> (datas[n].rhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1088"> n = datas[n].rhs;</span>
<span class="line" id="L1089"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1090"> <span class="tok-kw">const</span> extra = tree.extraData(datas[n].lhs, Node.LocalVarDecl);</span>
<span class="line" id="L1091"> <span class="tok-kw">if</span> (extra.align_node != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1092"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen</span>
</span>
<span class="line" id="L1093"> n = extra.align_node;</span>
<span class="line" id="L1094"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (extra.type_node != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1095"> n = extra.type_node;</span>
<span class="line" id="L1096"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1097"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// from mut token to name</span>
</span>
<span class="line" id="L1098"> <span class="tok-kw">return</span> main_tokens[n] + end_offset;</span>
<span class="line" id="L1099"> }</span>
<span class="line" id="L1100"> }</span>
<span class="line" id="L1101"> },</span>
<span class="line" id="L1102"> .container_field_init => {</span>
<span class="line" id="L1103"> <span class="tok-kw">if</span> (datas[n].rhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1104"> n = datas[n].rhs;</span>
<span class="line" id="L1105"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (datas[n].lhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1106"> n = datas[n].lhs;</span>
<span class="line" id="L1107"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1108"> <span class="tok-kw">return</span> main_tokens[n] + end_offset;</span>
<span class="line" id="L1109"> }</span>
<span class="line" id="L1110"> },</span>
<span class="line" id="L1111"> .container_field_align => {</span>
<span class="line" id="L1112"> <span class="tok-kw">if</span> (datas[n].rhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1113"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen</span>
</span>
<span class="line" id="L1114"> n = datas[n].rhs;</span>
<span class="line" id="L1115"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (datas[n].lhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1116"> n = datas[n].lhs;</span>
<span class="line" id="L1117"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1118"> <span class="tok-kw">return</span> main_tokens[n] + end_offset;</span>
<span class="line" id="L1119"> }</span>
<span class="line" id="L1120"> },</span>
<span class="line" id="L1121"> .container_field => {</span>
<span class="line" id="L1122"> <span class="tok-kw">const</span> extra = tree.extraData(datas[n].rhs, Node.ContainerField);</span>
<span class="line" id="L1123"> <span class="tok-kw">if</span> (extra.value_expr != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1124"> n = extra.value_expr;</span>
<span class="line" id="L1125"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (extra.align_expr != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1126"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen</span>
</span>
<span class="line" id="L1127"> n = extra.align_expr;</span>
<span class="line" id="L1128"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (datas[n].lhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1129"> n = datas[n].lhs;</span>
<span class="line" id="L1130"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1131"> <span class="tok-kw">return</span> main_tokens[n] + end_offset;</span>
<span class="line" id="L1132"> }</span>
<span class="line" id="L1133"> },</span>
<span class="line" id="L1134"></span>
<span class="line" id="L1135"> .array_init_one,</span>
<span class="line" id="L1136"> .struct_init_one,</span>
<span class="line" id="L1137"> => {</span>
<span class="line" id="L1138"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// rbrace</span>
</span>
<span class="line" id="L1139"> <span class="tok-kw">if</span> (datas[n].rhs == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1140"> <span class="tok-kw">return</span> main_tokens[n] + end_offset;</span>
<span class="line" id="L1141"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1142"> n = datas[n].rhs;</span>
<span class="line" id="L1143"> }</span>
<span class="line" id="L1144"> },</span>
<span class="line" id="L1145"> .slice_open,</span>
<span class="line" id="L1146"> .call_one_comma,</span>
<span class="line" id="L1147"> .async_call_one_comma,</span>
<span class="line" id="L1148"> .array_init_one_comma,</span>
<span class="line" id="L1149"> .struct_init_one_comma,</span>
<span class="line" id="L1150"> => {</span>
<span class="line" id="L1151"> end_offset += <span class="tok-number">2</span>; <span class="tok-comment">// ellipsis2 + rbracket, or comma + rparen</span>
</span>
<span class="line" id="L1152"> n = datas[n].rhs;</span>
<span class="line" id="L1153"> assert(n != <span class="tok-number">0</span>);</span>
<span class="line" id="L1154"> },</span>
<span class="line" id="L1155"> .slice => {</span>
<span class="line" id="L1156"> <span class="tok-kw">const</span> extra = tree.extraData(datas[n].rhs, Node.Slice);</span>
<span class="line" id="L1157"> assert(extra.end != <span class="tok-number">0</span>); <span class="tok-comment">// should have used slice_open</span>
</span>
<span class="line" id="L1158"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// rbracket</span>
</span>
<span class="line" id="L1159"> n = extra.end;</span>
<span class="line" id="L1160"> },</span>
<span class="line" id="L1161"> .slice_sentinel => {</span>
<span class="line" id="L1162"> <span class="tok-kw">const</span> extra = tree.extraData(datas[n].rhs, Node.SliceSentinel);</span>
<span class="line" id="L1163"> assert(extra.sentinel != <span class="tok-number">0</span>); <span class="tok-comment">// should have used slice</span>
</span>
<span class="line" id="L1164"> end_offset += <span class="tok-number">1</span>; <span class="tok-comment">// rbracket</span>
</span>
<span class="line" id="L1165"> n = extra.sentinel;</span>
<span class="line" id="L1166"> },</span>
<span class="line" id="L1167"></span>
<span class="line" id="L1168"> .@"continue" => {</span>
<span class="line" id="L1169"> <span class="tok-kw">if</span> (datas[n].lhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1170"> <span class="tok-kw">return</span> datas[n].lhs + end_offset;</span>
<span class="line" id="L1171"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1172"> <span class="tok-kw">return</span> main_tokens[n] + end_offset;</span>
<span class="line" id="L1173"> }</span>
<span class="line" id="L1174"> },</span>
<span class="line" id="L1175"> .@"break" => {</span>
<span class="line" id="L1176"> <span class="tok-kw">if</span> (datas[n].rhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1177"> n = datas[n].rhs;</span>
<span class="line" id="L1178"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (datas[n].lhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1179"> <span class="tok-kw">return</span> datas[n].lhs + end_offset;</span>
<span class="line" id="L1180"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1181"> <span class="tok-kw">return</span> main_tokens[n] + end_offset;</span>
<span class="line" id="L1182"> }</span>
<span class="line" id="L1183"> },</span>
<span class="line" id="L1184"> .fn_decl => {</span>
<span class="line" id="L1185"> <span class="tok-kw">if</span> (datas[n].rhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1186"> n = datas[n].rhs;</span>
<span class="line" id="L1187"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1188"> n = datas[n].lhs;</span>
<span class="line" id="L1189"> }</span>
<span class="line" id="L1190"> },</span>
<span class="line" id="L1191"> .fn_proto_one => {</span>
<span class="line" id="L1192"> <span class="tok-kw">const</span> extra = tree.extraData(datas[n].lhs, Node.FnProtoOne);</span>
<span class="line" id="L1193"> <span class="tok-comment">// addrspace, linksection, callconv, align can appear in any order, so we</span>
</span>
<span class="line" id="L1194"> <span class="tok-comment">// find the last one here.</span>
</span>
<span class="line" id="L1195"> <span class="tok-kw">var</span> max_node: Node.Index = datas[n].rhs;</span>
<span class="line" id="L1196"> <span class="tok-kw">var</span> max_start = token_starts[main_tokens[max_node]];</span>
<span class="line" id="L1197"> <span class="tok-kw">var</span> max_offset: TokenIndex = <span class="tok-number">0</span>;</span>
<span class="line" id="L1198"> <span class="tok-kw">if</span> (extra.align_expr != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1199"> <span class="tok-kw">const</span> start = token_starts[main_tokens[extra.align_expr]];</span>
<span class="line" id="L1200"> <span class="tok-kw">if</span> (start > max_start) {</span>
<span class="line" id="L1201"> max_node = extra.align_expr;</span>
<span class="line" id="L1202"> max_start = start;</span>
<span class="line" id="L1203"> max_offset = <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen</span>
</span>
<span class="line" id="L1204"> }</span>
<span class="line" id="L1205"> }</span>
<span class="line" id="L1206"> <span class="tok-kw">if</span> (extra.addrspace_expr != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1207"> <span class="tok-kw">const</span> start = token_starts[main_tokens[extra.addrspace_expr]];</span>
<span class="line" id="L1208"> <span class="tok-kw">if</span> (start > max_start) {</span>
<span class="line" id="L1209"> max_node = extra.addrspace_expr;</span>
<span class="line" id="L1210"> max_start = start;</span>
<span class="line" id="L1211"> max_offset = <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen</span>
</span>
<span class="line" id="L1212"> }</span>
<span class="line" id="L1213"> }</span>
<span class="line" id="L1214"> <span class="tok-kw">if</span> (extra.section_expr != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1215"> <span class="tok-kw">const</span> start = token_starts[main_tokens[extra.section_expr]];</span>
<span class="line" id="L1216"> <span class="tok-kw">if</span> (start > max_start) {</span>
<span class="line" id="L1217"> max_node = extra.section_expr;</span>
<span class="line" id="L1218"> max_start = start;</span>
<span class="line" id="L1219"> max_offset = <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen</span>
</span>
<span class="line" id="L1220"> }</span>
<span class="line" id="L1221"> }</span>
<span class="line" id="L1222"> <span class="tok-kw">if</span> (extra.callconv_expr != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1223"> <span class="tok-kw">const</span> start = token_starts[main_tokens[extra.callconv_expr]];</span>
<span class="line" id="L1224"> <span class="tok-kw">if</span> (start > max_start) {</span>
<span class="line" id="L1225"> max_node = extra.callconv_expr;</span>
<span class="line" id="L1226"> max_start = start;</span>
<span class="line" id="L1227"> max_offset = <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen</span>
</span>
<span class="line" id="L1228"> }</span>
<span class="line" id="L1229"> }</span>
<span class="line" id="L1230"> n = max_node;</span>
<span class="line" id="L1231"> end_offset += max_offset;</span>
<span class="line" id="L1232"> },</span>
<span class="line" id="L1233"> .fn_proto => {</span>
<span class="line" id="L1234"> <span class="tok-kw">const</span> extra = tree.extraData(datas[n].lhs, Node.FnProto);</span>
<span class="line" id="L1235"> <span class="tok-comment">// addrspace, linksection, callconv, align can appear in any order, so we</span>
</span>
<span class="line" id="L1236"> <span class="tok-comment">// find the last one here.</span>
</span>
<span class="line" id="L1237"> <span class="tok-kw">var</span> max_node: Node.Index = datas[n].rhs;</span>
<span class="line" id="L1238"> <span class="tok-kw">var</span> max_start = token_starts[main_tokens[max_node]];</span>
<span class="line" id="L1239"> <span class="tok-kw">var</span> max_offset: TokenIndex = <span class="tok-number">0</span>;</span>
<span class="line" id="L1240"> <span class="tok-kw">if</span> (extra.align_expr != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1241"> <span class="tok-kw">const</span> start = token_starts[main_tokens[extra.align_expr]];</span>
<span class="line" id="L1242"> <span class="tok-kw">if</span> (start > max_start) {</span>
<span class="line" id="L1243"> max_node = extra.align_expr;</span>
<span class="line" id="L1244"> max_start = start;</span>
<span class="line" id="L1245"> max_offset = <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen</span>
</span>
<span class="line" id="L1246"> }</span>
<span class="line" id="L1247"> }</span>
<span class="line" id="L1248"> <span class="tok-kw">if</span> (extra.addrspace_expr != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1249"> <span class="tok-kw">const</span> start = token_starts[main_tokens[extra.addrspace_expr]];</span>
<span class="line" id="L1250"> <span class="tok-kw">if</span> (start > max_start) {</span>
<span class="line" id="L1251"> max_node = extra.addrspace_expr;</span>
<span class="line" id="L1252"> max_start = start;</span>
<span class="line" id="L1253"> max_offset = <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen</span>
</span>
<span class="line" id="L1254"> }</span>
<span class="line" id="L1255"> }</span>
<span class="line" id="L1256"> <span class="tok-kw">if</span> (extra.section_expr != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1257"> <span class="tok-kw">const</span> start = token_starts[main_tokens[extra.section_expr]];</span>
<span class="line" id="L1258"> <span class="tok-kw">if</span> (start > max_start) {</span>
<span class="line" id="L1259"> max_node = extra.section_expr;</span>
<span class="line" id="L1260"> max_start = start;</span>
<span class="line" id="L1261"> max_offset = <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen</span>
</span>
<span class="line" id="L1262"> }</span>
<span class="line" id="L1263"> }</span>
<span class="line" id="L1264"> <span class="tok-kw">if</span> (extra.callconv_expr != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1265"> <span class="tok-kw">const</span> start = token_starts[main_tokens[extra.callconv_expr]];</span>
<span class="line" id="L1266"> <span class="tok-kw">if</span> (start > max_start) {</span>
<span class="line" id="L1267"> max_node = extra.callconv_expr;</span>
<span class="line" id="L1268"> max_start = start;</span>
<span class="line" id="L1269"> max_offset = <span class="tok-number">1</span>; <span class="tok-comment">// for the rparen</span>
</span>
<span class="line" id="L1270"> }</span>
<span class="line" id="L1271"> }</span>
<span class="line" id="L1272"> n = max_node;</span>
<span class="line" id="L1273"> end_offset += max_offset;</span>
<span class="line" id="L1274"> },</span>
<span class="line" id="L1275"> .while_cont => {</span>
<span class="line" id="L1276"> <span class="tok-kw">const</span> extra = tree.extraData(datas[n].rhs, Node.WhileCont);</span>
<span class="line" id="L1277"> assert(extra.then_expr != <span class="tok-number">0</span>);</span>
<span class="line" id="L1278"> n = extra.then_expr;</span>
<span class="line" id="L1279"> },</span>
<span class="line" id="L1280"> .@"while" => {</span>
<span class="line" id="L1281"> <span class="tok-kw">const</span> extra = tree.extraData(datas[n].rhs, Node.While);</span>
<span class="line" id="L1282"> assert(extra.else_expr != <span class="tok-number">0</span>);</span>
<span class="line" id="L1283"> n = extra.else_expr;</span>
<span class="line" id="L1284"> },</span>
<span class="line" id="L1285"> .@"if" => {</span>
<span class="line" id="L1286"> <span class="tok-kw">const</span> extra = tree.extraData(datas[n].rhs, Node.If);</span>
<span class="line" id="L1287"> assert(extra.else_expr != <span class="tok-number">0</span>);</span>
<span class="line" id="L1288"> n = extra.else_expr;</span>
<span class="line" id="L1289"> },</span>
<span class="line" id="L1290"> .@"for" => {</span>
<span class="line" id="L1291"> <span class="tok-kw">const</span> extra = <span class="tok-builtin">@as</span>(Node.For, <span class="tok-builtin">@bitCast</span>(datas[n].rhs));</span>
<span class="line" id="L1292"> n = tree.extra_data[datas[n].lhs + extra.inputs + <span class="tok-builtin">@intFromBool</span>(extra.has_else)];</span>
<span class="line" id="L1293"> },</span>
<span class="line" id="L1294"> .@"suspend" => {</span>
<span class="line" id="L1295"> <span class="tok-kw">if</span> (datas[n].lhs != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1296"> n = datas[n].lhs;</span>
<span class="line" id="L1297"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1298"> <span class="tok-kw">return</span> main_tokens[n] + end_offset;</span>
<span class="line" id="L1299"> }</span>
<span class="line" id="L1300"> },</span>
<span class="line" id="L1301"> .array_type_sentinel => {</span>
<span class="line" id="L1302"> <span class="tok-kw">const</span> extra = tree.extraData(datas[n].rhs, Node.ArrayTypeSentinel);</span>
<span class="line" id="L1303"> n = extra.elem_type;</span>
<span class="line" id="L1304"> },</span>
<span class="line" id="L1305"> };</span>
<span class="line" id="L1306">}</span>
<span class="line" id="L1307"></span>
<span class="line" id="L1308"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">tokensOnSameLine</span>(tree: Ast, token1: TokenIndex, token2: TokenIndex) <span class="tok-type">bool</span> {</span>
<span class="line" id="L1309"> <span class="tok-kw">const</span> token_starts = tree.tokens.items(.start);</span>
<span class="line" id="L1310"> <span class="tok-kw">const</span> source = tree.source[token_starts[token1]..token_starts[token2]];</span>
<span class="line" id="L1311"> <span class="tok-kw">return</span> mem.indexOfScalar(<span class="tok-type">u8</span>, source, <span class="tok-str">'\n'</span>) == <span class="tok-null">null</span>;</span>
<span class="line" id="L1312">}</span>
<span class="line" id="L1313"></span>
<span class="line" id="L1314"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getNodeSource</span>(tree: Ast, node: Node.Index) []<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L1315"> <span class="tok-kw">const</span> token_starts = tree.tokens.items(.start);</span>
<span class="line" id="L1316"> <span class="tok-kw">const</span> first_token = tree.firstToken(node);</span>
<span class="line" id="L1317"> <span class="tok-kw">const</span> last_token = tree.lastToken(node);</span>
<span class="line" id="L1318"> <span class="tok-kw">const</span> start = token_starts[first_token];</span>
<span class="line" id="L1319"> <span class="tok-kw">const</span> end = token_starts[last_token] + tree.tokenSlice(last_token).len;</span>
<span class="line" id="L1320"> <span class="tok-kw">return</span> tree.source[start..end];</span>
<span class="line" id="L1321">}</span>
<span class="line" id="L1322"></span>
<span class="line" id="L1323"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">globalVarDecl</span>(tree: Ast, node: Node.Index) full.VarDecl {</span>
<span class="line" id="L1324"> assert(tree.nodes.items(.tag)[node] == .global_var_decl);</span>
<span class="line" id="L1325"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1326"> <span class="tok-kw">const</span> extra = tree.extraData(data.lhs, Node.GlobalVarDecl);</span>
<span class="line" id="L1327"> <span class="tok-kw">return</span> tree.fullVarDeclComponents(.{</span>
<span class="line" id="L1328"> .type_node = extra.type_node,</span>
<span class="line" id="L1329"> .align_node = extra.align_node,</span>
<span class="line" id="L1330"> .addrspace_node = extra.addrspace_node,</span>
<span class="line" id="L1331"> .section_node = extra.section_node,</span>
<span class="line" id="L1332"> .init_node = data.rhs,</span>
<span class="line" id="L1333"> .mut_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1334"> });</span>
<span class="line" id="L1335">}</span>
<span class="line" id="L1336"></span>
<span class="line" id="L1337"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">localVarDecl</span>(tree: Ast, node: Node.Index) full.VarDecl {</span>
<span class="line" id="L1338"> assert(tree.nodes.items(.tag)[node] == .local_var_decl);</span>
<span class="line" id="L1339"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1340"> <span class="tok-kw">const</span> extra = tree.extraData(data.lhs, Node.LocalVarDecl);</span>
<span class="line" id="L1341"> <span class="tok-kw">return</span> tree.fullVarDeclComponents(.{</span>
<span class="line" id="L1342"> .type_node = extra.type_node,</span>
<span class="line" id="L1343"> .align_node = extra.align_node,</span>
<span class="line" id="L1344"> .addrspace_node = <span class="tok-number">0</span>,</span>
<span class="line" id="L1345"> .section_node = <span class="tok-number">0</span>,</span>
<span class="line" id="L1346"> .init_node = data.rhs,</span>
<span class="line" id="L1347"> .mut_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1348"> });</span>
<span class="line" id="L1349">}</span>
<span class="line" id="L1350"></span>
<span class="line" id="L1351"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">simpleVarDecl</span>(tree: Ast, node: Node.Index) full.VarDecl {</span>
<span class="line" id="L1352"> assert(tree.nodes.items(.tag)[node] == .simple_var_decl);</span>
<span class="line" id="L1353"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1354"> <span class="tok-kw">return</span> tree.fullVarDeclComponents(.{</span>
<span class="line" id="L1355"> .type_node = data.lhs,</span>
<span class="line" id="L1356"> .align_node = <span class="tok-number">0</span>,</span>
<span class="line" id="L1357"> .addrspace_node = <span class="tok-number">0</span>,</span>
<span class="line" id="L1358"> .section_node = <span class="tok-number">0</span>,</span>
<span class="line" id="L1359"> .init_node = data.rhs,</span>
<span class="line" id="L1360"> .mut_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1361"> });</span>
<span class="line" id="L1362">}</span>
<span class="line" id="L1363"></span>
<span class="line" id="L1364"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">alignedVarDecl</span>(tree: Ast, node: Node.Index) full.VarDecl {</span>
<span class="line" id="L1365"> assert(tree.nodes.items(.tag)[node] == .aligned_var_decl);</span>
<span class="line" id="L1366"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1367"> <span class="tok-kw">return</span> tree.fullVarDeclComponents(.{</span>
<span class="line" id="L1368"> .type_node = <span class="tok-number">0</span>,</span>
<span class="line" id="L1369"> .align_node = data.lhs,</span>
<span class="line" id="L1370"> .addrspace_node = <span class="tok-number">0</span>,</span>
<span class="line" id="L1371"> .section_node = <span class="tok-number">0</span>,</span>
<span class="line" id="L1372"> .init_node = data.rhs,</span>
<span class="line" id="L1373"> .mut_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1374"> });</span>
<span class="line" id="L1375">}</span>
<span class="line" id="L1376"></span>
<span class="line" id="L1377"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">ifSimple</span>(tree: Ast, node: Node.Index) full.If {</span>
<span class="line" id="L1378"> assert(tree.nodes.items(.tag)[node] == .if_simple);</span>
<span class="line" id="L1379"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1380"> <span class="tok-kw">return</span> tree.fullIfComponents(.{</span>
<span class="line" id="L1381"> .cond_expr = data.lhs,</span>
<span class="line" id="L1382"> .then_expr = data.rhs,</span>
<span class="line" id="L1383"> .else_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1384"> .if_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1385"> });</span>
<span class="line" id="L1386">}</span>
<span class="line" id="L1387"></span>
<span class="line" id="L1388"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">ifFull</span>(tree: Ast, node: Node.Index) full.If {</span>
<span class="line" id="L1389"> assert(tree.nodes.items(.tag)[node] == .@"if");</span>
<span class="line" id="L1390"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1391"> <span class="tok-kw">const</span> extra = tree.extraData(data.rhs, Node.If);</span>
<span class="line" id="L1392"> <span class="tok-kw">return</span> tree.fullIfComponents(.{</span>
<span class="line" id="L1393"> .cond_expr = data.lhs,</span>
<span class="line" id="L1394"> .then_expr = extra.then_expr,</span>
<span class="line" id="L1395"> .else_expr = extra.else_expr,</span>
<span class="line" id="L1396"> .if_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1397"> });</span>
<span class="line" id="L1398">}</span>
<span class="line" id="L1399"></span>
<span class="line" id="L1400"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">containerField</span>(tree: Ast, node: Node.Index) full.ContainerField {</span>
<span class="line" id="L1401"> assert(tree.nodes.items(.tag)[node] == .container_field);</span>
<span class="line" id="L1402"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1403"> <span class="tok-kw">const</span> extra = tree.extraData(data.rhs, Node.ContainerField);</span>
<span class="line" id="L1404"> <span class="tok-kw">const</span> main_token = tree.nodes.items(.main_token)[node];</span>
<span class="line" id="L1405"> <span class="tok-kw">return</span> tree.fullContainerFieldComponents(.{</span>
<span class="line" id="L1406"> .main_token = main_token,</span>
<span class="line" id="L1407"> .type_expr = data.lhs,</span>
<span class="line" id="L1408"> .value_expr = extra.value_expr,</span>
<span class="line" id="L1409"> .align_expr = extra.align_expr,</span>
<span class="line" id="L1410"> .tuple_like = tree.tokens.items(.tag)[main_token] != .identifier <span class="tok-kw">or</span></span>
<span class="line" id="L1411"> tree.tokens.items(.tag)[main_token + <span class="tok-number">1</span>] != .colon,</span>
<span class="line" id="L1412"> });</span>
<span class="line" id="L1413">}</span>
<span class="line" id="L1414"></span>
<span class="line" id="L1415"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">containerFieldInit</span>(tree: Ast, node: Node.Index) full.ContainerField {</span>
<span class="line" id="L1416"> assert(tree.nodes.items(.tag)[node] == .container_field_init);</span>
<span class="line" id="L1417"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1418"> <span class="tok-kw">const</span> main_token = tree.nodes.items(.main_token)[node];</span>
<span class="line" id="L1419"> <span class="tok-kw">return</span> tree.fullContainerFieldComponents(.{</span>
<span class="line" id="L1420"> .main_token = main_token,</span>
<span class="line" id="L1421"> .type_expr = data.lhs,</span>
<span class="line" id="L1422"> .value_expr = data.rhs,</span>
<span class="line" id="L1423"> .align_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1424"> .tuple_like = tree.tokens.items(.tag)[main_token] != .identifier <span class="tok-kw">or</span></span>
<span class="line" id="L1425"> tree.tokens.items(.tag)[main_token + <span class="tok-number">1</span>] != .colon,</span>
<span class="line" id="L1426"> });</span>
<span class="line" id="L1427">}</span>
<span class="line" id="L1428"></span>
<span class="line" id="L1429"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">containerFieldAlign</span>(tree: Ast, node: Node.Index) full.ContainerField {</span>
<span class="line" id="L1430"> assert(tree.nodes.items(.tag)[node] == .container_field_align);</span>
<span class="line" id="L1431"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1432"> <span class="tok-kw">const</span> main_token = tree.nodes.items(.main_token)[node];</span>
<span class="line" id="L1433"> <span class="tok-kw">return</span> tree.fullContainerFieldComponents(.{</span>
<span class="line" id="L1434"> .main_token = main_token,</span>
<span class="line" id="L1435"> .type_expr = data.lhs,</span>
<span class="line" id="L1436"> .value_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1437"> .align_expr = data.rhs,</span>
<span class="line" id="L1438"> .tuple_like = tree.tokens.items(.tag)[main_token] != .identifier <span class="tok-kw">or</span></span>
<span class="line" id="L1439"> tree.tokens.items(.tag)[main_token + <span class="tok-number">1</span>] != .colon,</span>
<span class="line" id="L1440"> });</span>
<span class="line" id="L1441">}</span>
<span class="line" id="L1442"></span>
<span class="line" id="L1443"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fnProtoSimple</span>(tree: Ast, buffer: *[<span class="tok-number">1</span>]Node.Index, node: Node.Index) full.FnProto {</span>
<span class="line" id="L1444"> assert(tree.nodes.items(.tag)[node] == .fn_proto_simple);</span>
<span class="line" id="L1445"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1446"> buffer[<span class="tok-number">0</span>] = data.lhs;</span>
<span class="line" id="L1447"> <span class="tok-kw">const</span> params = <span class="tok-kw">if</span> (data.lhs == <span class="tok-number">0</span>) buffer[<span class="tok-number">0</span>..<span class="tok-number">0</span>] <span class="tok-kw">else</span> buffer[<span class="tok-number">0</span>..<span class="tok-number">1</span>];</span>
<span class="line" id="L1448"> <span class="tok-kw">return</span> tree.fullFnProtoComponents(.{</span>
<span class="line" id="L1449"> .proto_node = node,</span>
<span class="line" id="L1450"> .fn_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1451"> .return_type = data.rhs,</span>
<span class="line" id="L1452"> .params = params,</span>
<span class="line" id="L1453"> .align_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1454"> .addrspace_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1455"> .section_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1456"> .callconv_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1457"> });</span>
<span class="line" id="L1458">}</span>
<span class="line" id="L1459"></span>
<span class="line" id="L1460"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fnProtoMulti</span>(tree: Ast, node: Node.Index) full.FnProto {</span>
<span class="line" id="L1461"> assert(tree.nodes.items(.tag)[node] == .fn_proto_multi);</span>
<span class="line" id="L1462"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1463"> <span class="tok-kw">const</span> params_range = tree.extraData(data.lhs, Node.SubRange);</span>
<span class="line" id="L1464"> <span class="tok-kw">const</span> params = tree.extra_data[params_range.start..params_range.end];</span>
<span class="line" id="L1465"> <span class="tok-kw">return</span> tree.fullFnProtoComponents(.{</span>
<span class="line" id="L1466"> .proto_node = node,</span>
<span class="line" id="L1467"> .fn_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1468"> .return_type = data.rhs,</span>
<span class="line" id="L1469"> .params = params,</span>
<span class="line" id="L1470"> .align_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1471"> .addrspace_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1472"> .section_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1473"> .callconv_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1474"> });</span>
<span class="line" id="L1475">}</span>
<span class="line" id="L1476"></span>
<span class="line" id="L1477"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fnProtoOne</span>(tree: Ast, buffer: *[<span class="tok-number">1</span>]Node.Index, node: Node.Index) full.FnProto {</span>
<span class="line" id="L1478"> assert(tree.nodes.items(.tag)[node] == .fn_proto_one);</span>
<span class="line" id="L1479"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1480"> <span class="tok-kw">const</span> extra = tree.extraData(data.lhs, Node.FnProtoOne);</span>
<span class="line" id="L1481"> buffer[<span class="tok-number">0</span>] = extra.param;</span>
<span class="line" id="L1482"> <span class="tok-kw">const</span> params = <span class="tok-kw">if</span> (extra.param == <span class="tok-number">0</span>) buffer[<span class="tok-number">0</span>..<span class="tok-number">0</span>] <span class="tok-kw">else</span> buffer[<span class="tok-number">0</span>..<span class="tok-number">1</span>];</span>
<span class="line" id="L1483"> <span class="tok-kw">return</span> tree.fullFnProtoComponents(.{</span>
<span class="line" id="L1484"> .proto_node = node,</span>
<span class="line" id="L1485"> .fn_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1486"> .return_type = data.rhs,</span>
<span class="line" id="L1487"> .params = params,</span>
<span class="line" id="L1488"> .align_expr = extra.align_expr,</span>
<span class="line" id="L1489"> .addrspace_expr = extra.addrspace_expr,</span>
<span class="line" id="L1490"> .section_expr = extra.section_expr,</span>
<span class="line" id="L1491"> .callconv_expr = extra.callconv_expr,</span>
<span class="line" id="L1492"> });</span>
<span class="line" id="L1493">}</span>
<span class="line" id="L1494"></span>
<span class="line" id="L1495"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fnProto</span>(tree: Ast, node: Node.Index) full.FnProto {</span>
<span class="line" id="L1496"> assert(tree.nodes.items(.tag)[node] == .fn_proto);</span>
<span class="line" id="L1497"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1498"> <span class="tok-kw">const</span> extra = tree.extraData(data.lhs, Node.FnProto);</span>
<span class="line" id="L1499"> <span class="tok-kw">const</span> params = tree.extra_data[extra.params_start..extra.params_end];</span>
<span class="line" id="L1500"> <span class="tok-kw">return</span> tree.fullFnProtoComponents(.{</span>
<span class="line" id="L1501"> .proto_node = node,</span>
<span class="line" id="L1502"> .fn_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1503"> .return_type = data.rhs,</span>
<span class="line" id="L1504"> .params = params,</span>
<span class="line" id="L1505"> .align_expr = extra.align_expr,</span>
<span class="line" id="L1506"> .addrspace_expr = extra.addrspace_expr,</span>
<span class="line" id="L1507"> .section_expr = extra.section_expr,</span>
<span class="line" id="L1508"> .callconv_expr = extra.callconv_expr,</span>
<span class="line" id="L1509"> });</span>
<span class="line" id="L1510">}</span>
<span class="line" id="L1511"></span>
<span class="line" id="L1512"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">structInitOne</span>(tree: Ast, buffer: *[<span class="tok-number">1</span>]Node.Index, node: Node.Index) full.StructInit {</span>
<span class="line" id="L1513"> assert(tree.nodes.items(.tag)[node] == .struct_init_one <span class="tok-kw">or</span></span>
<span class="line" id="L1514"> tree.nodes.items(.tag)[node] == .struct_init_one_comma);</span>
<span class="line" id="L1515"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1516"> buffer[<span class="tok-number">0</span>] = data.rhs;</span>
<span class="line" id="L1517"> <span class="tok-kw">const</span> fields = <span class="tok-kw">if</span> (data.rhs == <span class="tok-number">0</span>) buffer[<span class="tok-number">0</span>..<span class="tok-number">0</span>] <span class="tok-kw">else</span> buffer[<span class="tok-number">0</span>..<span class="tok-number">1</span>];</span>
<span class="line" id="L1518"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L1519"> .ast = .{</span>
<span class="line" id="L1520"> .lbrace = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1521"> .fields = fields,</span>
<span class="line" id="L1522"> .type_expr = data.lhs,</span>
<span class="line" id="L1523"> },</span>
<span class="line" id="L1524"> };</span>
<span class="line" id="L1525">}</span>
<span class="line" id="L1526"></span>
<span class="line" id="L1527"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">structInitDotTwo</span>(tree: Ast, buffer: *[<span class="tok-number">2</span>]Node.Index, node: Node.Index) full.StructInit {</span>
<span class="line" id="L1528"> assert(tree.nodes.items(.tag)[node] == .struct_init_dot_two <span class="tok-kw">or</span></span>
<span class="line" id="L1529"> tree.nodes.items(.tag)[node] == .struct_init_dot_two_comma);</span>
<span class="line" id="L1530"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1531"> buffer.* = .{ data.lhs, data.rhs };</span>
<span class="line" id="L1532"> <span class="tok-kw">const</span> fields = <span class="tok-kw">if</span> (data.rhs != <span class="tok-number">0</span>)</span>
<span class="line" id="L1533"> buffer[<span class="tok-number">0</span>..<span class="tok-number">2</span>]</span>
<span class="line" id="L1534"> <span class="tok-kw">else</span> <span class="tok-kw">if</span> (data.lhs != <span class="tok-number">0</span>)</span>
<span class="line" id="L1535"> buffer[<span class="tok-number">0</span>..<span class="tok-number">1</span>]</span>
<span class="line" id="L1536"> <span class="tok-kw">else</span></span>
<span class="line" id="L1537"> buffer[<span class="tok-number">0</span>..<span class="tok-number">0</span>];</span>
<span class="line" id="L1538"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L1539"> .ast = .{</span>
<span class="line" id="L1540"> .lbrace = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1541"> .fields = fields,</span>
<span class="line" id="L1542"> .type_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1543"> },</span>
<span class="line" id="L1544"> };</span>
<span class="line" id="L1545">}</span>
<span class="line" id="L1546"></span>
<span class="line" id="L1547"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">structInitDot</span>(tree: Ast, node: Node.Index) full.StructInit {</span>
<span class="line" id="L1548"> assert(tree.nodes.items(.tag)[node] == .struct_init_dot <span class="tok-kw">or</span></span>
<span class="line" id="L1549"> tree.nodes.items(.tag)[node] == .struct_init_dot_comma);</span>
<span class="line" id="L1550"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1551"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L1552"> .ast = .{</span>
<span class="line" id="L1553"> .lbrace = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1554"> .fields = tree.extra_data[data.lhs..data.rhs],</span>
<span class="line" id="L1555"> .type_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1556"> },</span>
<span class="line" id="L1557"> };</span>
<span class="line" id="L1558">}</span>
<span class="line" id="L1559"></span>
<span class="line" id="L1560"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">structInit</span>(tree: Ast, node: Node.Index) full.StructInit {</span>
<span class="line" id="L1561"> assert(tree.nodes.items(.tag)[node] == .struct_init <span class="tok-kw">or</span></span>
<span class="line" id="L1562"> tree.nodes.items(.tag)[node] == .struct_init_comma);</span>
<span class="line" id="L1563"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1564"> <span class="tok-kw">const</span> fields_range = tree.extraData(data.rhs, Node.SubRange);</span>
<span class="line" id="L1565"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L1566"> .ast = .{</span>
<span class="line" id="L1567"> .lbrace = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1568"> .fields = tree.extra_data[fields_range.start..fields_range.end],</span>
<span class="line" id="L1569"> .type_expr = data.lhs,</span>
<span class="line" id="L1570"> },</span>
<span class="line" id="L1571"> };</span>
<span class="line" id="L1572">}</span>
<span class="line" id="L1573"></span>
<span class="line" id="L1574"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">arrayInitOne</span>(tree: Ast, buffer: *[<span class="tok-number">1</span>]Node.Index, node: Node.Index) full.ArrayInit {</span>
<span class="line" id="L1575"> assert(tree.nodes.items(.tag)[node] == .array_init_one <span class="tok-kw">or</span></span>
<span class="line" id="L1576"> tree.nodes.items(.tag)[node] == .array_init_one_comma);</span>
<span class="line" id="L1577"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1578"> buffer[<span class="tok-number">0</span>] = data.rhs;</span>
<span class="line" id="L1579"> <span class="tok-kw">const</span> elements = <span class="tok-kw">if</span> (data.rhs == <span class="tok-number">0</span>) buffer[<span class="tok-number">0</span>..<span class="tok-number">0</span>] <span class="tok-kw">else</span> buffer[<span class="tok-number">0</span>..<span class="tok-number">1</span>];</span>
<span class="line" id="L1580"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L1581"> .ast = .{</span>
<span class="line" id="L1582"> .lbrace = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1583"> .elements = elements,</span>
<span class="line" id="L1584"> .type_expr = data.lhs,</span>
<span class="line" id="L1585"> },</span>
<span class="line" id="L1586"> };</span>
<span class="line" id="L1587">}</span>
<span class="line" id="L1588"></span>
<span class="line" id="L1589"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">arrayInitDotTwo</span>(tree: Ast, buffer: *[<span class="tok-number">2</span>]Node.Index, node: Node.Index) full.ArrayInit {</span>
<span class="line" id="L1590"> assert(tree.nodes.items(.tag)[node] == .array_init_dot_two <span class="tok-kw">or</span></span>
<span class="line" id="L1591"> tree.nodes.items(.tag)[node] == .array_init_dot_two_comma);</span>
<span class="line" id="L1592"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1593"> buffer.* = .{ data.lhs, data.rhs };</span>
<span class="line" id="L1594"> <span class="tok-kw">const</span> elements = <span class="tok-kw">if</span> (data.rhs != <span class="tok-number">0</span>)</span>
<span class="line" id="L1595"> buffer[<span class="tok-number">0</span>..<span class="tok-number">2</span>]</span>
<span class="line" id="L1596"> <span class="tok-kw">else</span> <span class="tok-kw">if</span> (data.lhs != <span class="tok-number">0</span>)</span>
<span class="line" id="L1597"> buffer[<span class="tok-number">0</span>..<span class="tok-number">1</span>]</span>
<span class="line" id="L1598"> <span class="tok-kw">else</span></span>
<span class="line" id="L1599"> buffer[<span class="tok-number">0</span>..<span class="tok-number">0</span>];</span>
<span class="line" id="L1600"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L1601"> .ast = .{</span>
<span class="line" id="L1602"> .lbrace = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1603"> .elements = elements,</span>
<span class="line" id="L1604"> .type_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1605"> },</span>
<span class="line" id="L1606"> };</span>
<span class="line" id="L1607">}</span>
<span class="line" id="L1608"></span>
<span class="line" id="L1609"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">arrayInitDot</span>(tree: Ast, node: Node.Index) full.ArrayInit {</span>
<span class="line" id="L1610"> assert(tree.nodes.items(.tag)[node] == .array_init_dot <span class="tok-kw">or</span></span>
<span class="line" id="L1611"> tree.nodes.items(.tag)[node] == .array_init_dot_comma);</span>
<span class="line" id="L1612"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1613"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L1614"> .ast = .{</span>
<span class="line" id="L1615"> .lbrace = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1616"> .elements = tree.extra_data[data.lhs..data.rhs],</span>
<span class="line" id="L1617"> .type_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1618"> },</span>
<span class="line" id="L1619"> };</span>
<span class="line" id="L1620">}</span>
<span class="line" id="L1621"></span>
<span class="line" id="L1622"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">arrayInit</span>(tree: Ast, node: Node.Index) full.ArrayInit {</span>
<span class="line" id="L1623"> assert(tree.nodes.items(.tag)[node] == .array_init <span class="tok-kw">or</span></span>
<span class="line" id="L1624"> tree.nodes.items(.tag)[node] == .array_init_comma);</span>
<span class="line" id="L1625"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1626"> <span class="tok-kw">const</span> elem_range = tree.extraData(data.rhs, Node.SubRange);</span>
<span class="line" id="L1627"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L1628"> .ast = .{</span>
<span class="line" id="L1629"> .lbrace = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1630"> .elements = tree.extra_data[elem_range.start..elem_range.end],</span>
<span class="line" id="L1631"> .type_expr = data.lhs,</span>
<span class="line" id="L1632"> },</span>
<span class="line" id="L1633"> };</span>
<span class="line" id="L1634">}</span>
<span class="line" id="L1635"></span>
<span class="line" id="L1636"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">arrayType</span>(tree: Ast, node: Node.Index) full.ArrayType {</span>
<span class="line" id="L1637"> assert(tree.nodes.items(.tag)[node] == .array_type);</span>
<span class="line" id="L1638"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1639"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L1640"> .ast = .{</span>
<span class="line" id="L1641"> .lbracket = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1642"> .elem_count = data.lhs,</span>
<span class="line" id="L1643"> .sentinel = <span class="tok-number">0</span>,</span>
<span class="line" id="L1644"> .elem_type = data.rhs,</span>
<span class="line" id="L1645"> },</span>
<span class="line" id="L1646"> };</span>
<span class="line" id="L1647">}</span>
<span class="line" id="L1648"></span>
<span class="line" id="L1649"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">arrayTypeSentinel</span>(tree: Ast, node: Node.Index) full.ArrayType {</span>
<span class="line" id="L1650"> assert(tree.nodes.items(.tag)[node] == .array_type_sentinel);</span>
<span class="line" id="L1651"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1652"> <span class="tok-kw">const</span> extra = tree.extraData(data.rhs, Node.ArrayTypeSentinel);</span>
<span class="line" id="L1653"> assert(extra.sentinel != <span class="tok-number">0</span>);</span>
<span class="line" id="L1654"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L1655"> .ast = .{</span>
<span class="line" id="L1656"> .lbracket = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1657"> .elem_count = data.lhs,</span>
<span class="line" id="L1658"> .sentinel = extra.sentinel,</span>
<span class="line" id="L1659"> .elem_type = extra.elem_type,</span>
<span class="line" id="L1660"> },</span>
<span class="line" id="L1661"> };</span>
<span class="line" id="L1662">}</span>
<span class="line" id="L1663"></span>
<span class="line" id="L1664"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">ptrTypeAligned</span>(tree: Ast, node: Node.Index) full.PtrType {</span>
<span class="line" id="L1665"> assert(tree.nodes.items(.tag)[node] == .ptr_type_aligned);</span>
<span class="line" id="L1666"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1667"> <span class="tok-kw">return</span> tree.fullPtrTypeComponents(.{</span>
<span class="line" id="L1668"> .main_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1669"> .align_node = data.lhs,</span>
<span class="line" id="L1670"> .addrspace_node = <span class="tok-number">0</span>,</span>
<span class="line" id="L1671"> .sentinel = <span class="tok-number">0</span>,</span>
<span class="line" id="L1672"> .bit_range_start = <span class="tok-number">0</span>,</span>
<span class="line" id="L1673"> .bit_range_end = <span class="tok-number">0</span>,</span>
<span class="line" id="L1674"> .child_type = data.rhs,</span>
<span class="line" id="L1675"> });</span>
<span class="line" id="L1676">}</span>
<span class="line" id="L1677"></span>
<span class="line" id="L1678"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">ptrTypeSentinel</span>(tree: Ast, node: Node.Index) full.PtrType {</span>
<span class="line" id="L1679"> assert(tree.nodes.items(.tag)[node] == .ptr_type_sentinel);</span>
<span class="line" id="L1680"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1681"> <span class="tok-kw">return</span> tree.fullPtrTypeComponents(.{</span>
<span class="line" id="L1682"> .main_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1683"> .align_node = <span class="tok-number">0</span>,</span>
<span class="line" id="L1684"> .addrspace_node = <span class="tok-number">0</span>,</span>
<span class="line" id="L1685"> .sentinel = data.lhs,</span>
<span class="line" id="L1686"> .bit_range_start = <span class="tok-number">0</span>,</span>
<span class="line" id="L1687"> .bit_range_end = <span class="tok-number">0</span>,</span>
<span class="line" id="L1688"> .child_type = data.rhs,</span>
<span class="line" id="L1689"> });</span>
<span class="line" id="L1690">}</span>
<span class="line" id="L1691"></span>
<span class="line" id="L1692"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">ptrType</span>(tree: Ast, node: Node.Index) full.PtrType {</span>
<span class="line" id="L1693"> assert(tree.nodes.items(.tag)[node] == .ptr_type);</span>
<span class="line" id="L1694"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1695"> <span class="tok-kw">const</span> extra = tree.extraData(data.lhs, Node.PtrType);</span>
<span class="line" id="L1696"> <span class="tok-kw">return</span> tree.fullPtrTypeComponents(.{</span>
<span class="line" id="L1697"> .main_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1698"> .align_node = extra.align_node,</span>
<span class="line" id="L1699"> .addrspace_node = extra.addrspace_node,</span>
<span class="line" id="L1700"> .sentinel = extra.sentinel,</span>
<span class="line" id="L1701"> .bit_range_start = <span class="tok-number">0</span>,</span>
<span class="line" id="L1702"> .bit_range_end = <span class="tok-number">0</span>,</span>
<span class="line" id="L1703"> .child_type = data.rhs,</span>
<span class="line" id="L1704"> });</span>
<span class="line" id="L1705">}</span>
<span class="line" id="L1706"></span>
<span class="line" id="L1707"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">ptrTypeBitRange</span>(tree: Ast, node: Node.Index) full.PtrType {</span>
<span class="line" id="L1708"> assert(tree.nodes.items(.tag)[node] == .ptr_type_bit_range);</span>
<span class="line" id="L1709"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1710"> <span class="tok-kw">const</span> extra = tree.extraData(data.lhs, Node.PtrTypeBitRange);</span>
<span class="line" id="L1711"> <span class="tok-kw">return</span> tree.fullPtrTypeComponents(.{</span>
<span class="line" id="L1712"> .main_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1713"> .align_node = extra.align_node,</span>
<span class="line" id="L1714"> .addrspace_node = extra.addrspace_node,</span>
<span class="line" id="L1715"> .sentinel = extra.sentinel,</span>
<span class="line" id="L1716"> .bit_range_start = extra.bit_range_start,</span>
<span class="line" id="L1717"> .bit_range_end = extra.bit_range_end,</span>
<span class="line" id="L1718"> .child_type = data.rhs,</span>
<span class="line" id="L1719"> });</span>
<span class="line" id="L1720">}</span>
<span class="line" id="L1721"></span>
<span class="line" id="L1722"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">sliceOpen</span>(tree: Ast, node: Node.Index) full.Slice {</span>
<span class="line" id="L1723"> assert(tree.nodes.items(.tag)[node] == .slice_open);</span>
<span class="line" id="L1724"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1725"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L1726"> .ast = .{</span>
<span class="line" id="L1727"> .sliced = data.lhs,</span>
<span class="line" id="L1728"> .lbracket = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1729"> .start = data.rhs,</span>
<span class="line" id="L1730"> .end = <span class="tok-number">0</span>,</span>
<span class="line" id="L1731"> .sentinel = <span class="tok-number">0</span>,</span>
<span class="line" id="L1732"> },</span>
<span class="line" id="L1733"> };</span>
<span class="line" id="L1734">}</span>
<span class="line" id="L1735"></span>
<span class="line" id="L1736"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">slice</span>(tree: Ast, node: Node.Index) full.Slice {</span>
<span class="line" id="L1737"> assert(tree.nodes.items(.tag)[node] == .slice);</span>
<span class="line" id="L1738"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1739"> <span class="tok-kw">const</span> extra = tree.extraData(data.rhs, Node.Slice);</span>
<span class="line" id="L1740"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L1741"> .ast = .{</span>
<span class="line" id="L1742"> .sliced = data.lhs,</span>
<span class="line" id="L1743"> .lbracket = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1744"> .start = extra.start,</span>
<span class="line" id="L1745"> .end = extra.end,</span>
<span class="line" id="L1746"> .sentinel = <span class="tok-number">0</span>,</span>
<span class="line" id="L1747"> },</span>
<span class="line" id="L1748"> };</span>
<span class="line" id="L1749">}</span>
<span class="line" id="L1750"></span>
<span class="line" id="L1751"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">sliceSentinel</span>(tree: Ast, node: Node.Index) full.Slice {</span>
<span class="line" id="L1752"> assert(tree.nodes.items(.tag)[node] == .slice_sentinel);</span>
<span class="line" id="L1753"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1754"> <span class="tok-kw">const</span> extra = tree.extraData(data.rhs, Node.SliceSentinel);</span>
<span class="line" id="L1755"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L1756"> .ast = .{</span>
<span class="line" id="L1757"> .sliced = data.lhs,</span>
<span class="line" id="L1758"> .lbracket = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1759"> .start = extra.start,</span>
<span class="line" id="L1760"> .end = extra.end,</span>
<span class="line" id="L1761"> .sentinel = extra.sentinel,</span>
<span class="line" id="L1762"> },</span>
<span class="line" id="L1763"> };</span>
<span class="line" id="L1764">}</span>
<span class="line" id="L1765"></span>
<span class="line" id="L1766"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">containerDeclTwo</span>(tree: Ast, buffer: *[<span class="tok-number">2</span>]Node.Index, node: Node.Index) full.ContainerDecl {</span>
<span class="line" id="L1767"> assert(tree.nodes.items(.tag)[node] == .container_decl_two <span class="tok-kw">or</span></span>
<span class="line" id="L1768"> tree.nodes.items(.tag)[node] == .container_decl_two_trailing);</span>
<span class="line" id="L1769"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1770"> buffer.* = .{ data.lhs, data.rhs };</span>
<span class="line" id="L1771"> <span class="tok-kw">const</span> members = <span class="tok-kw">if</span> (data.rhs != <span class="tok-number">0</span>)</span>
<span class="line" id="L1772"> buffer[<span class="tok-number">0</span>..<span class="tok-number">2</span>]</span>
<span class="line" id="L1773"> <span class="tok-kw">else</span> <span class="tok-kw">if</span> (data.lhs != <span class="tok-number">0</span>)</span>
<span class="line" id="L1774"> buffer[<span class="tok-number">0</span>..<span class="tok-number">1</span>]</span>
<span class="line" id="L1775"> <span class="tok-kw">else</span></span>
<span class="line" id="L1776"> buffer[<span class="tok-number">0</span>..<span class="tok-number">0</span>];</span>
<span class="line" id="L1777"> <span class="tok-kw">return</span> tree.fullContainerDeclComponents(.{</span>
<span class="line" id="L1778"> .main_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1779"> .enum_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L1780"> .members = members,</span>
<span class="line" id="L1781"> .arg = <span class="tok-number">0</span>,</span>
<span class="line" id="L1782"> });</span>
<span class="line" id="L1783">}</span>
<span class="line" id="L1784"></span>
<span class="line" id="L1785"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">containerDecl</span>(tree: Ast, node: Node.Index) full.ContainerDecl {</span>
<span class="line" id="L1786"> assert(tree.nodes.items(.tag)[node] == .container_decl <span class="tok-kw">or</span></span>
<span class="line" id="L1787"> tree.nodes.items(.tag)[node] == .container_decl_trailing);</span>
<span class="line" id="L1788"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1789"> <span class="tok-kw">return</span> tree.fullContainerDeclComponents(.{</span>
<span class="line" id="L1790"> .main_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1791"> .enum_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L1792"> .members = tree.extra_data[data.lhs..data.rhs],</span>
<span class="line" id="L1793"> .arg = <span class="tok-number">0</span>,</span>
<span class="line" id="L1794"> });</span>
<span class="line" id="L1795">}</span>
<span class="line" id="L1796"></span>
<span class="line" id="L1797"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">containerDeclArg</span>(tree: Ast, node: Node.Index) full.ContainerDecl {</span>
<span class="line" id="L1798"> assert(tree.nodes.items(.tag)[node] == .container_decl_arg <span class="tok-kw">or</span></span>
<span class="line" id="L1799"> tree.nodes.items(.tag)[node] == .container_decl_arg_trailing);</span>
<span class="line" id="L1800"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1801"> <span class="tok-kw">const</span> members_range = tree.extraData(data.rhs, Node.SubRange);</span>
<span class="line" id="L1802"> <span class="tok-kw">return</span> tree.fullContainerDeclComponents(.{</span>
<span class="line" id="L1803"> .main_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1804"> .enum_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L1805"> .members = tree.extra_data[members_range.start..members_range.end],</span>
<span class="line" id="L1806"> .arg = data.lhs,</span>
<span class="line" id="L1807"> });</span>
<span class="line" id="L1808">}</span>
<span class="line" id="L1809"></span>
<span class="line" id="L1810"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">containerDeclRoot</span>(tree: Ast) full.ContainerDecl {</span>
<span class="line" id="L1811"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L1812"> .layout_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L1813"> .ast = .{</span>
<span class="line" id="L1814"> .main_token = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1815"> .enum_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L1816"> .members = tree.rootDecls(),</span>
<span class="line" id="L1817"> .arg = <span class="tok-number">0</span>,</span>
<span class="line" id="L1818"> },</span>
<span class="line" id="L1819"> };</span>
<span class="line" id="L1820">}</span>
<span class="line" id="L1821"></span>
<span class="line" id="L1822"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">taggedUnionTwo</span>(tree: Ast, buffer: *[<span class="tok-number">2</span>]Node.Index, node: Node.Index) full.ContainerDecl {</span>
<span class="line" id="L1823"> assert(tree.nodes.items(.tag)[node] == .tagged_union_two <span class="tok-kw">or</span></span>
<span class="line" id="L1824"> tree.nodes.items(.tag)[node] == .tagged_union_two_trailing);</span>
<span class="line" id="L1825"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1826"> buffer.* = .{ data.lhs, data.rhs };</span>
<span class="line" id="L1827"> <span class="tok-kw">const</span> members = <span class="tok-kw">if</span> (data.rhs != <span class="tok-number">0</span>)</span>
<span class="line" id="L1828"> buffer[<span class="tok-number">0</span>..<span class="tok-number">2</span>]</span>
<span class="line" id="L1829"> <span class="tok-kw">else</span> <span class="tok-kw">if</span> (data.lhs != <span class="tok-number">0</span>)</span>
<span class="line" id="L1830"> buffer[<span class="tok-number">0</span>..<span class="tok-number">1</span>]</span>
<span class="line" id="L1831"> <span class="tok-kw">else</span></span>
<span class="line" id="L1832"> buffer[<span class="tok-number">0</span>..<span class="tok-number">0</span>];</span>
<span class="line" id="L1833"> <span class="tok-kw">const</span> main_token = tree.nodes.items(.main_token)[node];</span>
<span class="line" id="L1834"> <span class="tok-kw">return</span> tree.fullContainerDeclComponents(.{</span>
<span class="line" id="L1835"> .main_token = main_token,</span>
<span class="line" id="L1836"> .enum_token = main_token + <span class="tok-number">2</span>, <span class="tok-comment">// union lparen enum</span>
</span>
<span class="line" id="L1837"> .members = members,</span>
<span class="line" id="L1838"> .arg = <span class="tok-number">0</span>,</span>
<span class="line" id="L1839"> });</span>
<span class="line" id="L1840">}</span>
<span class="line" id="L1841"></span>
<span class="line" id="L1842"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">taggedUnion</span>(tree: Ast, node: Node.Index) full.ContainerDecl {</span>
<span class="line" id="L1843"> assert(tree.nodes.items(.tag)[node] == .tagged_union <span class="tok-kw">or</span></span>
<span class="line" id="L1844"> tree.nodes.items(.tag)[node] == .tagged_union_trailing);</span>
<span class="line" id="L1845"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1846"> <span class="tok-kw">const</span> main_token = tree.nodes.items(.main_token)[node];</span>
<span class="line" id="L1847"> <span class="tok-kw">return</span> tree.fullContainerDeclComponents(.{</span>
<span class="line" id="L1848"> .main_token = main_token,</span>
<span class="line" id="L1849"> .enum_token = main_token + <span class="tok-number">2</span>, <span class="tok-comment">// union lparen enum</span>
</span>
<span class="line" id="L1850"> .members = tree.extra_data[data.lhs..data.rhs],</span>
<span class="line" id="L1851"> .arg = <span class="tok-number">0</span>,</span>
<span class="line" id="L1852"> });</span>
<span class="line" id="L1853">}</span>
<span class="line" id="L1854"></span>
<span class="line" id="L1855"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">taggedUnionEnumTag</span>(tree: Ast, node: Node.Index) full.ContainerDecl {</span>
<span class="line" id="L1856"> assert(tree.nodes.items(.tag)[node] == .tagged_union_enum_tag <span class="tok-kw">or</span></span>
<span class="line" id="L1857"> tree.nodes.items(.tag)[node] == .tagged_union_enum_tag_trailing);</span>
<span class="line" id="L1858"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1859"> <span class="tok-kw">const</span> members_range = tree.extraData(data.rhs, Node.SubRange);</span>
<span class="line" id="L1860"> <span class="tok-kw">const</span> main_token = tree.nodes.items(.main_token)[node];</span>
<span class="line" id="L1861"> <span class="tok-kw">return</span> tree.fullContainerDeclComponents(.{</span>
<span class="line" id="L1862"> .main_token = main_token,</span>
<span class="line" id="L1863"> .enum_token = main_token + <span class="tok-number">2</span>, <span class="tok-comment">// union lparen enum</span>
</span>
<span class="line" id="L1864"> .members = tree.extra_data[members_range.start..members_range.end],</span>
<span class="line" id="L1865"> .arg = data.lhs,</span>
<span class="line" id="L1866"> });</span>
<span class="line" id="L1867">}</span>
<span class="line" id="L1868"></span>
<span class="line" id="L1869"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">switchCaseOne</span>(tree: Ast, node: Node.Index) full.SwitchCase {</span>
<span class="line" id="L1870"> <span class="tok-kw">const</span> data = &tree.nodes.items(.data)[node];</span>
<span class="line" id="L1871"> <span class="tok-kw">const</span> values: *[<span class="tok-number">1</span>]Node.Index = &data.lhs;</span>
<span class="line" id="L1872"> <span class="tok-kw">return</span> tree.fullSwitchCaseComponents(.{</span>
<span class="line" id="L1873"> .values = <span class="tok-kw">if</span> (data.lhs == <span class="tok-number">0</span>) values[<span class="tok-number">0</span>..<span class="tok-number">0</span>] <span class="tok-kw">else</span> values[<span class="tok-number">0</span>..<span class="tok-number">1</span>],</span>
<span class="line" id="L1874"> .arrow_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1875"> .target_expr = data.rhs,</span>
<span class="line" id="L1876"> }, node);</span>
<span class="line" id="L1877">}</span>
<span class="line" id="L1878"></span>
<span class="line" id="L1879"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">switchCase</span>(tree: Ast, node: Node.Index) full.SwitchCase {</span>
<span class="line" id="L1880"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1881"> <span class="tok-kw">const</span> extra = tree.extraData(data.lhs, Node.SubRange);</span>
<span class="line" id="L1882"> <span class="tok-kw">return</span> tree.fullSwitchCaseComponents(.{</span>
<span class="line" id="L1883"> .values = tree.extra_data[extra.start..extra.end],</span>
<span class="line" id="L1884"> .arrow_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1885"> .target_expr = data.rhs,</span>
<span class="line" id="L1886"> }, node);</span>
<span class="line" id="L1887">}</span>
<span class="line" id="L1888"></span>
<span class="line" id="L1889"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">asmSimple</span>(tree: Ast, node: Node.Index) full.Asm {</span>
<span class="line" id="L1890"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1891"> <span class="tok-kw">return</span> tree.fullAsmComponents(.{</span>
<span class="line" id="L1892"> .asm_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1893"> .template = data.lhs,</span>
<span class="line" id="L1894"> .items = &.{},</span>
<span class="line" id="L1895"> .rparen = data.rhs,</span>
<span class="line" id="L1896"> });</span>
<span class="line" id="L1897">}</span>
<span class="line" id="L1898"></span>
<span class="line" id="L1899"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">asmFull</span>(tree: Ast, node: Node.Index) full.Asm {</span>
<span class="line" id="L1900"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1901"> <span class="tok-kw">const</span> extra = tree.extraData(data.rhs, Node.Asm);</span>
<span class="line" id="L1902"> <span class="tok-kw">return</span> tree.fullAsmComponents(.{</span>
<span class="line" id="L1903"> .asm_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1904"> .template = data.lhs,</span>
<span class="line" id="L1905"> .items = tree.extra_data[extra.items_start..extra.items_end],</span>
<span class="line" id="L1906"> .rparen = extra.rparen,</span>
<span class="line" id="L1907"> });</span>
<span class="line" id="L1908">}</span>
<span class="line" id="L1909"></span>
<span class="line" id="L1910"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">whileSimple</span>(tree: Ast, node: Node.Index) full.While {</span>
<span class="line" id="L1911"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1912"> <span class="tok-kw">return</span> tree.fullWhileComponents(.{</span>
<span class="line" id="L1913"> .while_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1914"> .cond_expr = data.lhs,</span>
<span class="line" id="L1915"> .cont_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1916"> .then_expr = data.rhs,</span>
<span class="line" id="L1917"> .else_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1918"> });</span>
<span class="line" id="L1919">}</span>
<span class="line" id="L1920"></span>
<span class="line" id="L1921"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">whileCont</span>(tree: Ast, node: Node.Index) full.While {</span>
<span class="line" id="L1922"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1923"> <span class="tok-kw">const</span> extra = tree.extraData(data.rhs, Node.WhileCont);</span>
<span class="line" id="L1924"> <span class="tok-kw">return</span> tree.fullWhileComponents(.{</span>
<span class="line" id="L1925"> .while_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1926"> .cond_expr = data.lhs,</span>
<span class="line" id="L1927"> .cont_expr = extra.cont_expr,</span>
<span class="line" id="L1928"> .then_expr = extra.then_expr,</span>
<span class="line" id="L1929"> .else_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1930"> });</span>
<span class="line" id="L1931">}</span>
<span class="line" id="L1932"></span>
<span class="line" id="L1933"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">whileFull</span>(tree: Ast, node: Node.Index) full.While {</span>
<span class="line" id="L1934"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1935"> <span class="tok-kw">const</span> extra = tree.extraData(data.rhs, Node.While);</span>
<span class="line" id="L1936"> <span class="tok-kw">return</span> tree.fullWhileComponents(.{</span>
<span class="line" id="L1937"> .while_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1938"> .cond_expr = data.lhs,</span>
<span class="line" id="L1939"> .cont_expr = extra.cont_expr,</span>
<span class="line" id="L1940"> .then_expr = extra.then_expr,</span>
<span class="line" id="L1941"> .else_expr = extra.else_expr,</span>
<span class="line" id="L1942"> });</span>
<span class="line" id="L1943">}</span>
<span class="line" id="L1944"></span>
<span class="line" id="L1945"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">forSimple</span>(tree: Ast, node: Node.Index) full.For {</span>
<span class="line" id="L1946"> <span class="tok-kw">const</span> data = &tree.nodes.items(.data)[node];</span>
<span class="line" id="L1947"> <span class="tok-kw">const</span> inputs: *[<span class="tok-number">1</span>]Node.Index = &data.lhs;</span>
<span class="line" id="L1948"> <span class="tok-kw">return</span> tree.fullForComponents(.{</span>
<span class="line" id="L1949"> .for_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1950"> .inputs = inputs[<span class="tok-number">0</span>..<span class="tok-number">1</span>],</span>
<span class="line" id="L1951"> .then_expr = data.rhs,</span>
<span class="line" id="L1952"> .else_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L1953"> });</span>
<span class="line" id="L1954">}</span>
<span class="line" id="L1955"></span>
<span class="line" id="L1956"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">forFull</span>(tree: Ast, node: Node.Index) full.For {</span>
<span class="line" id="L1957"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1958"> <span class="tok-kw">const</span> extra = <span class="tok-builtin">@as</span>(Node.For, <span class="tok-builtin">@bitCast</span>(data.rhs));</span>
<span class="line" id="L1959"> <span class="tok-kw">const</span> inputs = tree.extra_data[data.lhs..][<span class="tok-number">0</span>..extra.inputs];</span>
<span class="line" id="L1960"> <span class="tok-kw">const</span> then_expr = tree.extra_data[data.lhs + extra.inputs];</span>
<span class="line" id="L1961"> <span class="tok-kw">const</span> else_expr = <span class="tok-kw">if</span> (extra.has_else) tree.extra_data[data.lhs + extra.inputs + <span class="tok-number">1</span>] <span class="tok-kw">else</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L1962"> <span class="tok-kw">return</span> tree.fullForComponents(.{</span>
<span class="line" id="L1963"> .for_token = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1964"> .inputs = inputs,</span>
<span class="line" id="L1965"> .then_expr = then_expr,</span>
<span class="line" id="L1966"> .else_expr = else_expr,</span>
<span class="line" id="L1967"> });</span>
<span class="line" id="L1968">}</span>
<span class="line" id="L1969"></span>
<span class="line" id="L1970"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">callOne</span>(tree: Ast, buffer: *[<span class="tok-number">1</span>]Node.Index, node: Node.Index) full.Call {</span>
<span class="line" id="L1971"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1972"> buffer.* = .{data.rhs};</span>
<span class="line" id="L1973"> <span class="tok-kw">const</span> params = <span class="tok-kw">if</span> (data.rhs != <span class="tok-number">0</span>) buffer[<span class="tok-number">0</span>..<span class="tok-number">1</span>] <span class="tok-kw">else</span> buffer[<span class="tok-number">0</span>..<span class="tok-number">0</span>];</span>
<span class="line" id="L1974"> <span class="tok-kw">return</span> tree.fullCallComponents(.{</span>
<span class="line" id="L1975"> .lparen = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1976"> .fn_expr = data.lhs,</span>
<span class="line" id="L1977"> .params = params,</span>
<span class="line" id="L1978"> });</span>
<span class="line" id="L1979">}</span>
<span class="line" id="L1980"></span>
<span class="line" id="L1981"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">callFull</span>(tree: Ast, node: Node.Index) full.Call {</span>
<span class="line" id="L1982"> <span class="tok-kw">const</span> data = tree.nodes.items(.data)[node];</span>
<span class="line" id="L1983"> <span class="tok-kw">const</span> extra = tree.extraData(data.rhs, Node.SubRange);</span>
<span class="line" id="L1984"> <span class="tok-kw">return</span> tree.fullCallComponents(.{</span>
<span class="line" id="L1985"> .lparen = tree.nodes.items(.main_token)[node],</span>
<span class="line" id="L1986"> .fn_expr = data.lhs,</span>
<span class="line" id="L1987"> .params = tree.extra_data[extra.start..extra.end],</span>
<span class="line" id="L1988"> });</span>
<span class="line" id="L1989">}</span>
<span class="line" id="L1990"></span>
<span class="line" id="L1991"><span class="tok-kw">fn</span> <span class="tok-fn">fullVarDeclComponents</span>(tree: Ast, info: full.VarDecl.Components) full.VarDecl {</span>
<span class="line" id="L1992"> <span class="tok-kw">const</span> token_tags = tree.tokens.items(.tag);</span>
<span class="line" id="L1993"> <span class="tok-kw">var</span> result: full.VarDecl = .{</span>
<span class="line" id="L1994"> .ast = info,</span>
<span class="line" id="L1995"> .visib_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L1996"> .extern_export_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L1997"> .lib_name = <span class="tok-null">null</span>,</span>
<span class="line" id="L1998"> .threadlocal_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L1999"> .comptime_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2000"> };</span>
<span class="line" id="L2001"> <span class="tok-kw">var</span> i = info.mut_token;</span>
<span class="line" id="L2002"> <span class="tok-kw">while</span> (i > <span class="tok-number">0</span>) {</span>
<span class="line" id="L2003"> i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L2004"> <span class="tok-kw">switch</span> (token_tags[i]) {</span>
<span class="line" id="L2005"> .keyword_extern, .keyword_export => result.extern_export_token = i,</span>
<span class="line" id="L2006"> .keyword_comptime => result.comptime_token = i,</span>
<span class="line" id="L2007"> .keyword_pub => result.visib_token = i,</span>
<span class="line" id="L2008"> .keyword_threadlocal => result.threadlocal_token = i,</span>
<span class="line" id="L2009"> .string_literal => result.lib_name = i,</span>
<span class="line" id="L2010"> <span class="tok-kw">else</span> => <span class="tok-kw">break</span>,</span>
<span class="line" id="L2011"> }</span>
<span class="line" id="L2012"> }</span>
<span class="line" id="L2013"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L2014">}</span>
<span class="line" id="L2015"></span>
<span class="line" id="L2016"><span class="tok-kw">fn</span> <span class="tok-fn">fullIfComponents</span>(tree: Ast, info: full.If.Components) full.If {</span>
<span class="line" id="L2017"> <span class="tok-kw">const</span> token_tags = tree.tokens.items(.tag);</span>
<span class="line" id="L2018"> <span class="tok-kw">var</span> result: full.If = .{</span>
<span class="line" id="L2019"> .ast = info,</span>
<span class="line" id="L2020"> .payload_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2021"> .error_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2022"> .else_token = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2023"> };</span>
<span class="line" id="L2024"> <span class="tok-comment">// if (cond_expr) |x|</span>
</span>
<span class="line" id="L2025"> <span class="tok-comment">// ^ ^</span>
</span>
<span class="line" id="L2026"> <span class="tok-kw">const</span> payload_pipe = tree.lastToken(info.cond_expr) + <span class="tok-number">2</span>;</span>
<span class="line" id="L2027"> <span class="tok-kw">if</span> (token_tags[payload_pipe] == .pipe) {</span>
<span class="line" id="L2028"> result.payload_token = payload_pipe + <span class="tok-number">1</span>;</span>
<span class="line" id="L2029"> }</span>
<span class="line" id="L2030"> <span class="tok-kw">if</span> (info.else_expr != <span class="tok-number">0</span>) {</span>
<span class="line" id="L2031"> <span class="tok-comment">// then_expr else |x|</span>
</span>
<span class="line" id="L2032"> <span class="tok-comment">// ^ ^</span>
</span>
<span class="line" id="L2033"> result.else_token = tree.lastToken(info.then_expr) + <span class="tok-number">1</span>;</span>
<span class="line" id="L2034"> <span class="tok-kw">if</span> (token_tags[result.else_token + <span class="tok-number">1</span>] == .pipe) {</span>
<span class="line" id="L2035"> result.error_token = result.else_token + <span class="tok-number">2</span>;</span>
<span class="line" id="L2036"> }</span>
<span class="line" id="L2037"> }</span>
<span class="line" id="L2038"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L2039">}</span>
<span class="line" id="L2040"></span>
<span class="line" id="L2041"><span class="tok-kw">fn</span> <span class="tok-fn">fullContainerFieldComponents</span>(tree: Ast, info: full.ContainerField.Components) full.ContainerField {</span>
<span class="line" id="L2042"> <span class="tok-kw">const</span> token_tags = tree.tokens.items(.tag);</span>
<span class="line" id="L2043"> <span class="tok-kw">var</span> result: full.ContainerField = .{</span>
<span class="line" id="L2044"> .ast = info,</span>
<span class="line" id="L2045"> .comptime_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2046"> };</span>
<span class="line" id="L2047"> <span class="tok-kw">if</span> (token_tags[info.main_token] == .keyword_comptime) {</span>
<span class="line" id="L2048"> <span class="tok-comment">// comptime type = init,</span>
</span>
<span class="line" id="L2049"> <span class="tok-comment">// ^</span>
</span>
<span class="line" id="L2050"> result.comptime_token = info.main_token;</span>
<span class="line" id="L2051"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (info.main_token > <span class="tok-number">0</span> <span class="tok-kw">and</span> token_tags[info.main_token - <span class="tok-number">1</span>] == .keyword_comptime) {</span>
<span class="line" id="L2052"> <span class="tok-comment">// comptime name: type = init,</span>
</span>
<span class="line" id="L2053"> <span class="tok-comment">// ^</span>
</span>
<span class="line" id="L2054"> result.comptime_token = info.main_token - <span class="tok-number">1</span>;</span>
<span class="line" id="L2055"> }</span>
<span class="line" id="L2056"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L2057">}</span>
<span class="line" id="L2058"></span>
<span class="line" id="L2059"><span class="tok-kw">fn</span> <span class="tok-fn">fullFnProtoComponents</span>(tree: Ast, info: full.FnProto.Components) full.FnProto {</span>
<span class="line" id="L2060"> <span class="tok-kw">const</span> token_tags = tree.tokens.items(.tag);</span>
<span class="line" id="L2061"> <span class="tok-kw">var</span> result: full.FnProto = .{</span>
<span class="line" id="L2062"> .ast = info,</span>
<span class="line" id="L2063"> .visib_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2064"> .extern_export_inline_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2065"> .lib_name = <span class="tok-null">null</span>,</span>
<span class="line" id="L2066"> .name_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2067"> .lparen = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2068"> };</span>
<span class="line" id="L2069"> <span class="tok-kw">var</span> i = info.fn_token;</span>
<span class="line" id="L2070"> <span class="tok-kw">while</span> (i > <span class="tok-number">0</span>) {</span>
<span class="line" id="L2071"> i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L2072"> <span class="tok-kw">switch</span> (token_tags[i]) {</span>
<span class="line" id="L2073"> .keyword_extern,</span>
<span class="line" id="L2074"> .keyword_export,</span>
<span class="line" id="L2075"> .keyword_inline,</span>
<span class="line" id="L2076"> .keyword_noinline,</span>
<span class="line" id="L2077"> => result.extern_export_inline_token = i,</span>
<span class="line" id="L2078"> .keyword_pub => result.visib_token = i,</span>
<span class="line" id="L2079"> .string_literal => result.lib_name = i,</span>
<span class="line" id="L2080"> <span class="tok-kw">else</span> => <span class="tok-kw">break</span>,</span>
<span class="line" id="L2081"> }</span>
<span class="line" id="L2082"> }</span>
<span class="line" id="L2083"> <span class="tok-kw">const</span> after_fn_token = info.fn_token + <span class="tok-number">1</span>;</span>
<span class="line" id="L2084"> <span class="tok-kw">if</span> (token_tags[after_fn_token] == .identifier) {</span>
<span class="line" id="L2085"> result.name_token = after_fn_token;</span>
<span class="line" id="L2086"> result.lparen = after_fn_token + <span class="tok-number">1</span>;</span>
<span class="line" id="L2087"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L2088"> result.lparen = after_fn_token;</span>
<span class="line" id="L2089"> }</span>
<span class="line" id="L2090"> assert(token_tags[result.lparen] == .l_paren);</span>
<span class="line" id="L2091"></span>
<span class="line" id="L2092"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L2093">}</span>
<span class="line" id="L2094"></span>
<span class="line" id="L2095"><span class="tok-kw">fn</span> <span class="tok-fn">fullPtrTypeComponents</span>(tree: Ast, info: full.PtrType.Components) full.PtrType {</span>
<span class="line" id="L2096"> <span class="tok-kw">const</span> token_tags = tree.tokens.items(.tag);</span>
<span class="line" id="L2097"> <span class="tok-kw">const</span> Size = std.builtin.Type.Pointer.Size;</span>
<span class="line" id="L2098"> <span class="tok-kw">const</span> size: Size = <span class="tok-kw">switch</span> (token_tags[info.main_token]) {</span>
<span class="line" id="L2099"> .asterisk,</span>
<span class="line" id="L2100"> .asterisk_asterisk,</span>
<span class="line" id="L2101"> => <span class="tok-kw">switch</span> (token_tags[info.main_token + <span class="tok-number">1</span>]) {</span>
<span class="line" id="L2102"> .r_bracket, .colon => .Many,</span>
<span class="line" id="L2103"> .identifier => <span class="tok-kw">if</span> (token_tags[info.main_token -| <span class="tok-number">1</span>] == .l_bracket) Size.C <span class="tok-kw">else</span> .One,</span>
<span class="line" id="L2104"> <span class="tok-kw">else</span> => .One,</span>
<span class="line" id="L2105"> },</span>
<span class="line" id="L2106"> .l_bracket => Size.Slice,</span>
<span class="line" id="L2107"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L2108"> };</span>
<span class="line" id="L2109"> <span class="tok-kw">var</span> result: full.PtrType = .{</span>
<span class="line" id="L2110"> .size = size,</span>
<span class="line" id="L2111"> .allowzero_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2112"> .const_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2113"> .volatile_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2114"> .ast = info,</span>
<span class="line" id="L2115"> };</span>
<span class="line" id="L2116"> <span class="tok-comment">// We need to be careful that we don't iterate over any sub-expressions</span>
</span>
<span class="line" id="L2117"> <span class="tok-comment">// here while looking for modifiers as that could result in false</span>
</span>
<span class="line" id="L2118"> <span class="tok-comment">// positives. Therefore, start after a sentinel if there is one and</span>
</span>
<span class="line" id="L2119"> <span class="tok-comment">// skip over any align node and bit range nodes.</span>
</span>
<span class="line" id="L2120"> <span class="tok-kw">var</span> i = <span class="tok-kw">if</span> (info.sentinel != <span class="tok-number">0</span>) tree.lastToken(info.sentinel) + <span class="tok-number">1</span> <span class="tok-kw">else</span> info.main_token;</span>
<span class="line" id="L2121"> <span class="tok-kw">const</span> end = tree.firstToken(info.child_type);</span>
<span class="line" id="L2122"> <span class="tok-kw">while</span> (i < end) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L2123"> <span class="tok-kw">switch</span> (token_tags[i]) {</span>
<span class="line" id="L2124"> .keyword_allowzero => result.allowzero_token = i,</span>
<span class="line" id="L2125"> .keyword_const => result.const_token = i,</span>
<span class="line" id="L2126"> .keyword_volatile => result.volatile_token = i,</span>
<span class="line" id="L2127"> .keyword_align => {</span>
<span class="line" id="L2128"> assert(info.align_node != <span class="tok-number">0</span>);</span>
<span class="line" id="L2129"> <span class="tok-kw">if</span> (info.bit_range_end != <span class="tok-number">0</span>) {</span>
<span class="line" id="L2130"> assert(info.bit_range_start != <span class="tok-number">0</span>);</span>
<span class="line" id="L2131"> i = tree.lastToken(info.bit_range_end) + <span class="tok-number">1</span>;</span>
<span class="line" id="L2132"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L2133"> i = tree.lastToken(info.align_node) + <span class="tok-number">1</span>;</span>
<span class="line" id="L2134"> }</span>
<span class="line" id="L2135"> },</span>
<span class="line" id="L2136"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L2137"> }</span>
<span class="line" id="L2138"> }</span>
<span class="line" id="L2139"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L2140">}</span>
<span class="line" id="L2141"></span>
<span class="line" id="L2142"><span class="tok-kw">fn</span> <span class="tok-fn">fullContainerDeclComponents</span>(tree: Ast, info: full.ContainerDecl.Components) full.ContainerDecl {</span>
<span class="line" id="L2143"> <span class="tok-kw">const</span> token_tags = tree.tokens.items(.tag);</span>
<span class="line" id="L2144"> <span class="tok-kw">var</span> result: full.ContainerDecl = .{</span>
<span class="line" id="L2145"> .ast = info,</span>
<span class="line" id="L2146"> .layout_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2147"> };</span>
<span class="line" id="L2148"></span>
<span class="line" id="L2149"> <span class="tok-kw">if</span> (info.main_token == <span class="tok-number">0</span>) <span class="tok-kw">return</span> result;</span>
<span class="line" id="L2150"></span>
<span class="line" id="L2151"> <span class="tok-kw">switch</span> (token_tags[info.main_token - <span class="tok-number">1</span>]) {</span>
<span class="line" id="L2152"> .keyword_extern, .keyword_packed => result.layout_token = info.main_token - <span class="tok-number">1</span>,</span>
<span class="line" id="L2153"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L2154"> }</span>
<span class="line" id="L2155"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L2156">}</span>
<span class="line" id="L2157"></span>
<span class="line" id="L2158"><span class="tok-kw">fn</span> <span class="tok-fn">fullSwitchCaseComponents</span>(tree: Ast, info: full.SwitchCase.Components, node: Node.Index) full.SwitchCase {</span>
<span class="line" id="L2159"> <span class="tok-kw">const</span> token_tags = tree.tokens.items(.tag);</span>
<span class="line" id="L2160"> <span class="tok-kw">const</span> node_tags = tree.nodes.items(.tag);</span>
<span class="line" id="L2161"> <span class="tok-kw">var</span> result: full.SwitchCase = .{</span>
<span class="line" id="L2162"> .ast = info,</span>
<span class="line" id="L2163"> .payload_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2164"> .inline_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2165"> };</span>
<span class="line" id="L2166"> <span class="tok-kw">if</span> (token_tags[info.arrow_token + <span class="tok-number">1</span>] == .pipe) {</span>
<span class="line" id="L2167"> result.payload_token = info.arrow_token + <span class="tok-number">2</span>;</span>
<span class="line" id="L2168"> }</span>
<span class="line" id="L2169"> <span class="tok-kw">switch</span> (node_tags[node]) {</span>
<span class="line" id="L2170"> .switch_case_inline, .switch_case_inline_one => result.inline_token = firstToken(tree, node),</span>
<span class="line" id="L2171"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L2172"> }</span>
<span class="line" id="L2173"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L2174">}</span>
<span class="line" id="L2175"></span>
<span class="line" id="L2176"><span class="tok-kw">fn</span> <span class="tok-fn">fullAsmComponents</span>(tree: Ast, info: full.Asm.Components) full.Asm {</span>
<span class="line" id="L2177"> <span class="tok-kw">const</span> token_tags = tree.tokens.items(.tag);</span>
<span class="line" id="L2178"> <span class="tok-kw">const</span> node_tags = tree.nodes.items(.tag);</span>
<span class="line" id="L2179"> <span class="tok-kw">var</span> result: full.Asm = .{</span>
<span class="line" id="L2180"> .ast = info,</span>
<span class="line" id="L2181"> .volatile_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2182"> .inputs = &.{},</span>
<span class="line" id="L2183"> .outputs = &.{},</span>
<span class="line" id="L2184"> .first_clobber = <span class="tok-null">null</span>,</span>
<span class="line" id="L2185"> };</span>
<span class="line" id="L2186"> <span class="tok-kw">if</span> (token_tags[info.asm_token + <span class="tok-number">1</span>] == .keyword_volatile) {</span>
<span class="line" id="L2187"> result.volatile_token = info.asm_token + <span class="tok-number">1</span>;</span>
<span class="line" id="L2188"> }</span>
<span class="line" id="L2189"> <span class="tok-kw">const</span> outputs_end: <span class="tok-type">usize</span> = <span class="tok-kw">for</span> (info.items, <span class="tok-number">0</span>..) |item, i| {</span>
<span class="line" id="L2190"> <span class="tok-kw">switch</span> (node_tags[item]) {</span>
<span class="line" id="L2191"> .asm_output => <span class="tok-kw">continue</span>,</span>
<span class="line" id="L2192"> <span class="tok-kw">else</span> => <span class="tok-kw">break</span> i,</span>
<span class="line" id="L2193"> }</span>
<span class="line" id="L2194"> } <span class="tok-kw">else</span> info.items.len;</span>
<span class="line" id="L2195"></span>
<span class="line" id="L2196"> result.outputs = info.items[<span class="tok-number">0</span>..outputs_end];</span>
<span class="line" id="L2197"> result.inputs = info.items[outputs_end..];</span>
<span class="line" id="L2198"></span>
<span class="line" id="L2199"> <span class="tok-kw">if</span> (info.items.len == <span class="tok-number">0</span>) {</span>
<span class="line" id="L2200"> <span class="tok-comment">// asm ("foo" ::: "a", "b");</span>
</span>
<span class="line" id="L2201"> <span class="tok-kw">const</span> template_token = tree.lastToken(info.template);</span>
<span class="line" id="L2202"> <span class="tok-kw">if</span> (token_tags[template_token + <span class="tok-number">1</span>] == .colon <span class="tok-kw">and</span></span>
<span class="line" id="L2203"> token_tags[template_token + <span class="tok-number">2</span>] == .colon <span class="tok-kw">and</span></span>
<span class="line" id="L2204"> token_tags[template_token + <span class="tok-number">3</span>] == .colon <span class="tok-kw">and</span></span>
<span class="line" id="L2205"> token_tags[template_token + <span class="tok-number">4</span>] == .string_literal)</span>
<span class="line" id="L2206"> {</span>
<span class="line" id="L2207"> result.first_clobber = template_token + <span class="tok-number">4</span>;</span>
<span class="line" id="L2208"> }</span>
<span class="line" id="L2209"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (result.inputs.len != <span class="tok-number">0</span>) {</span>
<span class="line" id="L2210"> <span class="tok-comment">// asm ("foo" :: [_] "" (y) : "a", "b");</span>
</span>
<span class="line" id="L2211"> <span class="tok-kw">const</span> last_input = result.inputs[result.inputs.len - <span class="tok-number">1</span>];</span>
<span class="line" id="L2212"> <span class="tok-kw">const</span> rparen = tree.lastToken(last_input);</span>
<span class="line" id="L2213"> <span class="tok-kw">var</span> i = rparen + <span class="tok-number">1</span>;</span>
<span class="line" id="L2214"> <span class="tok-comment">// Allow a (useless) comma right after the closing parenthesis.</span>
</span>
<span class="line" id="L2215"> <span class="tok-kw">if</span> (token_tags[i] == .comma) i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2216"> <span class="tok-kw">if</span> (token_tags[i] == .colon <span class="tok-kw">and</span></span>
<span class="line" id="L2217"> token_tags[i + <span class="tok-number">1</span>] == .string_literal)</span>
<span class="line" id="L2218"> {</span>
<span class="line" id="L2219"> result.first_clobber = i + <span class="tok-number">1</span>;</span>
<span class="line" id="L2220"> }</span>
<span class="line" id="L2221"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L2222"> <span class="tok-comment">// asm ("foo" : [_] "" (x) :: "a", "b");</span>
</span>
<span class="line" id="L2223"> <span class="tok-kw">const</span> last_output = result.outputs[result.outputs.len - <span class="tok-number">1</span>];</span>
<span class="line" id="L2224"> <span class="tok-kw">const</span> rparen = tree.lastToken(last_output);</span>
<span class="line" id="L2225"> <span class="tok-kw">var</span> i = rparen + <span class="tok-number">1</span>;</span>
<span class="line" id="L2226"> <span class="tok-comment">// Allow a (useless) comma right after the closing parenthesis.</span>
</span>
<span class="line" id="L2227"> <span class="tok-kw">if</span> (token_tags[i] == .comma) i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2228"> <span class="tok-kw">if</span> (token_tags[i] == .colon <span class="tok-kw">and</span></span>
<span class="line" id="L2229"> token_tags[i + <span class="tok-number">1</span>] == .colon <span class="tok-kw">and</span></span>
<span class="line" id="L2230"> token_tags[i + <span class="tok-number">2</span>] == .string_literal)</span>
<span class="line" id="L2231"> {</span>
<span class="line" id="L2232"> result.first_clobber = i + <span class="tok-number">2</span>;</span>
<span class="line" id="L2233"> }</span>
<span class="line" id="L2234"> }</span>
<span class="line" id="L2235"></span>
<span class="line" id="L2236"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L2237">}</span>
<span class="line" id="L2238"></span>
<span class="line" id="L2239"><span class="tok-kw">fn</span> <span class="tok-fn">fullWhileComponents</span>(tree: Ast, info: full.While.Components) full.While {</span>
<span class="line" id="L2240"> <span class="tok-kw">const</span> token_tags = tree.tokens.items(.tag);</span>
<span class="line" id="L2241"> <span class="tok-kw">var</span> result: full.While = .{</span>
<span class="line" id="L2242"> .ast = info,</span>
<span class="line" id="L2243"> .inline_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2244"> .label_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2245"> .payload_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2246"> .else_token = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2247"> .error_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2248"> };</span>
<span class="line" id="L2249"> <span class="tok-kw">var</span> tok_i = info.while_token - <span class="tok-number">1</span>;</span>
<span class="line" id="L2250"> <span class="tok-kw">if</span> (token_tags[tok_i] == .keyword_inline) {</span>
<span class="line" id="L2251"> result.inline_token = tok_i;</span>
<span class="line" id="L2252"> tok_i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L2253"> }</span>
<span class="line" id="L2254"> <span class="tok-kw">if</span> (token_tags[tok_i] == .colon <span class="tok-kw">and</span></span>
<span class="line" id="L2255"> token_tags[tok_i - <span class="tok-number">1</span>] == .identifier)</span>
<span class="line" id="L2256"> {</span>
<span class="line" id="L2257"> result.label_token = tok_i - <span class="tok-number">1</span>;</span>
<span class="line" id="L2258"> }</span>
<span class="line" id="L2259"> <span class="tok-kw">const</span> last_cond_token = tree.lastToken(info.cond_expr);</span>
<span class="line" id="L2260"> <span class="tok-kw">if</span> (token_tags[last_cond_token + <span class="tok-number">2</span>] == .pipe) {</span>
<span class="line" id="L2261"> result.payload_token = last_cond_token + <span class="tok-number">3</span>;</span>
<span class="line" id="L2262"> }</span>
<span class="line" id="L2263"> <span class="tok-kw">if</span> (info.else_expr != <span class="tok-number">0</span>) {</span>
<span class="line" id="L2264"> <span class="tok-comment">// then_expr else |x|</span>
</span>
<span class="line" id="L2265"> <span class="tok-comment">// ^ ^</span>
</span>
<span class="line" id="L2266"> result.else_token = tree.lastToken(info.then_expr) + <span class="tok-number">1</span>;</span>
<span class="line" id="L2267"> <span class="tok-kw">if</span> (token_tags[result.else_token + <span class="tok-number">1</span>] == .pipe) {</span>
<span class="line" id="L2268"> result.error_token = result.else_token + <span class="tok-number">2</span>;</span>
<span class="line" id="L2269"> }</span>
<span class="line" id="L2270"> }</span>
<span class="line" id="L2271"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L2272">}</span>
<span class="line" id="L2273"></span>
<span class="line" id="L2274"><span class="tok-kw">fn</span> <span class="tok-fn">fullForComponents</span>(tree: Ast, info: full.For.Components) full.For {</span>
<span class="line" id="L2275"> <span class="tok-kw">const</span> token_tags = tree.tokens.items(.tag);</span>
<span class="line" id="L2276"> <span class="tok-kw">var</span> result: full.For = .{</span>
<span class="line" id="L2277"> .ast = info,</span>
<span class="line" id="L2278"> .inline_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2279"> .label_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2280"> .payload_token = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2281"> .else_token = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2282"> };</span>
<span class="line" id="L2283"> <span class="tok-kw">var</span> tok_i = info.for_token - <span class="tok-number">1</span>;</span>
<span class="line" id="L2284"> <span class="tok-kw">if</span> (token_tags[tok_i] == .keyword_inline) {</span>
<span class="line" id="L2285"> result.inline_token = tok_i;</span>
<span class="line" id="L2286"> tok_i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L2287"> }</span>
<span class="line" id="L2288"> <span class="tok-kw">if</span> (token_tags[tok_i] == .colon <span class="tok-kw">and</span></span>
<span class="line" id="L2289"> token_tags[tok_i - <span class="tok-number">1</span>] == .identifier)</span>
<span class="line" id="L2290"> {</span>
<span class="line" id="L2291"> result.label_token = tok_i - <span class="tok-number">1</span>;</span>
<span class="line" id="L2292"> }</span>
<span class="line" id="L2293"> <span class="tok-kw">const</span> last_cond_token = tree.lastToken(info.inputs[info.inputs.len - <span class="tok-number">1</span>]);</span>
<span class="line" id="L2294"> result.payload_token = last_cond_token + <span class="tok-number">3</span> + <span class="tok-builtin">@intFromBool</span>(token_tags[last_cond_token + <span class="tok-number">1</span>] == .comma);</span>
<span class="line" id="L2295"> <span class="tok-kw">if</span> (info.else_expr != <span class="tok-number">0</span>) {</span>
<span class="line" id="L2296"> result.else_token = tree.lastToken(info.then_expr) + <span class="tok-number">1</span>;</span>
<span class="line" id="L2297"> }</span>
<span class="line" id="L2298"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L2299">}</span>
<span class="line" id="L2300"></span>
<span class="line" id="L2301"><span class="tok-kw">fn</span> <span class="tok-fn">fullCallComponents</span>(tree: Ast, info: full.Call.Components) full.Call {</span>
<span class="line" id="L2302"> <span class="tok-kw">const</span> token_tags = tree.tokens.items(.tag);</span>
<span class="line" id="L2303"> <span class="tok-kw">var</span> result: full.Call = .{</span>
<span class="line" id="L2304"> .ast = info,</span>
<span class="line" id="L2305"> .async_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2306"> };</span>
<span class="line" id="L2307"> <span class="tok-kw">const</span> first_token = tree.firstToken(info.fn_expr);</span>
<span class="line" id="L2308"> <span class="tok-kw">if</span> (first_token != <span class="tok-number">0</span> <span class="tok-kw">and</span> token_tags[first_token - <span class="tok-number">1</span>] == .keyword_async) {</span>
<span class="line" id="L2309"> result.async_token = first_token - <span class="tok-number">1</span>;</span>
<span class="line" id="L2310"> }</span>
<span class="line" id="L2311"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L2312">}</span>
<span class="line" id="L2313"></span>
<span class="line" id="L2314"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fullVarDecl</span>(tree: Ast, node: Node.Index) ?full.VarDecl {</span>
<span class="line" id="L2315"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tree.nodes.items(.tag)[node]) {</span>
<span class="line" id="L2316"> .global_var_decl => tree.globalVarDecl(node),</span>
<span class="line" id="L2317"> .local_var_decl => tree.localVarDecl(node),</span>
<span class="line" id="L2318"> .aligned_var_decl => tree.alignedVarDecl(node),</span>
<span class="line" id="L2319"> .simple_var_decl => tree.simpleVarDecl(node),</span>
<span class="line" id="L2320"> <span class="tok-kw">else</span> => <span class="tok-null">null</span>,</span>
<span class="line" id="L2321"> };</span>
<span class="line" id="L2322">}</span>
<span class="line" id="L2323"></span>
<span class="line" id="L2324"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fullIf</span>(tree: Ast, node: Node.Index) ?full.If {</span>
<span class="line" id="L2325"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tree.nodes.items(.tag)[node]) {</span>
<span class="line" id="L2326"> .if_simple => tree.ifSimple(node),</span>
<span class="line" id="L2327"> .@"if" => tree.ifFull(node),</span>
<span class="line" id="L2328"> <span class="tok-kw">else</span> => <span class="tok-null">null</span>,</span>
<span class="line" id="L2329"> };</span>
<span class="line" id="L2330">}</span>
<span class="line" id="L2331"></span>
<span class="line" id="L2332"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fullWhile</span>(tree: Ast, node: Node.Index) ?full.While {</span>
<span class="line" id="L2333"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tree.nodes.items(.tag)[node]) {</span>
<span class="line" id="L2334"> .while_simple => tree.whileSimple(node),</span>
<span class="line" id="L2335"> .while_cont => tree.whileCont(node),</span>
<span class="line" id="L2336"> .@"while" => tree.whileFull(node),</span>
<span class="line" id="L2337"> <span class="tok-kw">else</span> => <span class="tok-null">null</span>,</span>
<span class="line" id="L2338"> };</span>
<span class="line" id="L2339">}</span>
<span class="line" id="L2340"></span>
<span class="line" id="L2341"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fullFor</span>(tree: Ast, node: Node.Index) ?full.For {</span>
<span class="line" id="L2342"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tree.nodes.items(.tag)[node]) {</span>
<span class="line" id="L2343"> .for_simple => tree.forSimple(node),</span>
<span class="line" id="L2344"> .@"for" => tree.forFull(node),</span>
<span class="line" id="L2345"> <span class="tok-kw">else</span> => <span class="tok-null">null</span>,</span>
<span class="line" id="L2346"> };</span>
<span class="line" id="L2347">}</span>
<span class="line" id="L2348"></span>
<span class="line" id="L2349"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fullContainerField</span>(tree: Ast, node: Node.Index) ?full.ContainerField {</span>
<span class="line" id="L2350"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tree.nodes.items(.tag)[node]) {</span>
<span class="line" id="L2351"> .container_field_init => tree.containerFieldInit(node),</span>
<span class="line" id="L2352"> .container_field_align => tree.containerFieldAlign(node),</span>
<span class="line" id="L2353"> .container_field => tree.containerField(node),</span>
<span class="line" id="L2354"> <span class="tok-kw">else</span> => <span class="tok-null">null</span>,</span>
<span class="line" id="L2355"> };</span>
<span class="line" id="L2356">}</span>
<span class="line" id="L2357"></span>
<span class="line" id="L2358"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fullFnProto</span>(tree: Ast, buffer: *[<span class="tok-number">1</span>]Ast.Node.Index, node: Node.Index) ?full.FnProto {</span>
<span class="line" id="L2359"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tree.nodes.items(.tag)[node]) {</span>
<span class="line" id="L2360"> .fn_proto => tree.fnProto(node),</span>
<span class="line" id="L2361"> .fn_proto_multi => tree.fnProtoMulti(node),</span>
<span class="line" id="L2362"> .fn_proto_one => tree.fnProtoOne(buffer, node),</span>
<span class="line" id="L2363"> .fn_proto_simple => tree.fnProtoSimple(buffer, node),</span>
<span class="line" id="L2364"> .fn_decl => tree.fullFnProto(buffer, tree.nodes.items(.data)[node].lhs),</span>
<span class="line" id="L2365"> <span class="tok-kw">else</span> => <span class="tok-null">null</span>,</span>
<span class="line" id="L2366"> };</span>
<span class="line" id="L2367">}</span>
<span class="line" id="L2368"></span>
<span class="line" id="L2369"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fullStructInit</span>(tree: Ast, buffer: *[<span class="tok-number">2</span>]Ast.Node.Index, node: Node.Index) ?full.StructInit {</span>
<span class="line" id="L2370"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tree.nodes.items(.tag)[node]) {</span>
<span class="line" id="L2371"> .struct_init_one, .struct_init_one_comma => tree.structInitOne(buffer[<span class="tok-number">0</span>..<span class="tok-number">1</span>], node),</span>
<span class="line" id="L2372"> .struct_init_dot_two, .struct_init_dot_two_comma => tree.structInitDotTwo(buffer, node),</span>
<span class="line" id="L2373"> .struct_init_dot, .struct_init_dot_comma => tree.structInitDot(node),</span>
<span class="line" id="L2374"> .struct_init, .struct_init_comma => tree.structInit(node),</span>
<span class="line" id="L2375"> <span class="tok-kw">else</span> => <span class="tok-null">null</span>,</span>
<span class="line" id="L2376"> };</span>
<span class="line" id="L2377">}</span>
<span class="line" id="L2378"></span>
<span class="line" id="L2379"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fullArrayInit</span>(tree: Ast, buffer: *[<span class="tok-number">2</span>]Node.Index, node: Node.Index) ?full.ArrayInit {</span>
<span class="line" id="L2380"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tree.nodes.items(.tag)[node]) {</span>
<span class="line" id="L2381"> .array_init_one, .array_init_one_comma => tree.arrayInitOne(buffer[<span class="tok-number">0</span>..<span class="tok-number">1</span>], node),</span>
<span class="line" id="L2382"> .array_init_dot_two, .array_init_dot_two_comma => tree.arrayInitDotTwo(buffer, node),</span>
<span class="line" id="L2383"> .array_init_dot, .array_init_dot_comma => tree.arrayInitDot(node),</span>
<span class="line" id="L2384"> .array_init, .array_init_comma => tree.arrayInit(node),</span>
<span class="line" id="L2385"> <span class="tok-kw">else</span> => <span class="tok-null">null</span>,</span>
<span class="line" id="L2386"> };</span>
<span class="line" id="L2387">}</span>
<span class="line" id="L2388"></span>
<span class="line" id="L2389"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fullArrayType</span>(tree: Ast, node: Node.Index) ?full.ArrayType {</span>
<span class="line" id="L2390"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tree.nodes.items(.tag)[node]) {</span>
<span class="line" id="L2391"> .array_type => tree.arrayType(node),</span>
<span class="line" id="L2392"> .array_type_sentinel => tree.arrayTypeSentinel(node),</span>
<span class="line" id="L2393"> <span class="tok-kw">else</span> => <span class="tok-null">null</span>,</span>
<span class="line" id="L2394"> };</span>
<span class="line" id="L2395">}</span>
<span class="line" id="L2396"></span>
<span class="line" id="L2397"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fullPtrType</span>(tree: Ast, node: Node.Index) ?full.PtrType {</span>
<span class="line" id="L2398"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tree.nodes.items(.tag)[node]) {</span>
<span class="line" id="L2399"> .ptr_type_aligned => tree.ptrTypeAligned(node),</span>
<span class="line" id="L2400"> .ptr_type_sentinel => tree.ptrTypeSentinel(node),</span>
<span class="line" id="L2401"> .ptr_type => tree.ptrType(node),</span>
<span class="line" id="L2402"> .ptr_type_bit_range => tree.ptrTypeBitRange(node),</span>
<span class="line" id="L2403"> <span class="tok-kw">else</span> => <span class="tok-null">null</span>,</span>
<span class="line" id="L2404"> };</span>
<span class="line" id="L2405">}</span>
<span class="line" id="L2406"></span>
<span class="line" id="L2407"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fullSlice</span>(tree: Ast, node: Node.Index) ?full.Slice {</span>
<span class="line" id="L2408"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tree.nodes.items(.tag)[node]) {</span>
<span class="line" id="L2409"> .slice_open => tree.sliceOpen(node),</span>
<span class="line" id="L2410"> .slice => tree.slice(node),</span>
<span class="line" id="L2411"> .slice_sentinel => tree.sliceSentinel(node),</span>
<span class="line" id="L2412"> <span class="tok-kw">else</span> => <span class="tok-null">null</span>,</span>
<span class="line" id="L2413"> };</span>
<span class="line" id="L2414">}</span>
<span class="line" id="L2415"></span>
<span class="line" id="L2416"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fullContainerDecl</span>(tree: Ast, buffer: *[<span class="tok-number">2</span>]Ast.Node.Index, node: Node.Index) ?full.ContainerDecl {</span>
<span class="line" id="L2417"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tree.nodes.items(.tag)[node]) {</span>
<span class="line" id="L2418"> .root => tree.containerDeclRoot(),</span>
<span class="line" id="L2419"> .container_decl, .container_decl_trailing => tree.containerDecl(node),</span>
<span class="line" id="L2420"> .container_decl_arg, .container_decl_arg_trailing => tree.containerDeclArg(node),</span>
<span class="line" id="L2421"> .container_decl_two, .container_decl_two_trailing => tree.containerDeclTwo(buffer, node),</span>
<span class="line" id="L2422"> .tagged_union, .tagged_union_trailing => tree.taggedUnion(node),</span>
<span class="line" id="L2423"> .tagged_union_enum_tag, .tagged_union_enum_tag_trailing => tree.taggedUnionEnumTag(node),</span>
<span class="line" id="L2424"> .tagged_union_two, .tagged_union_two_trailing => tree.taggedUnionTwo(buffer, node),</span>
<span class="line" id="L2425"> <span class="tok-kw">else</span> => <span class="tok-null">null</span>,</span>
<span class="line" id="L2426"> };</span>
<span class="line" id="L2427">}</span>
<span class="line" id="L2428"></span>
<span class="line" id="L2429"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fullSwitchCase</span>(tree: Ast, node: Node.Index) ?full.SwitchCase {</span>
<span class="line" id="L2430"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tree.nodes.items(.tag)[node]) {</span>
<span class="line" id="L2431"> .switch_case_one, .switch_case_inline_one => tree.switchCaseOne(node),</span>
<span class="line" id="L2432"> .switch_case, .switch_case_inline => tree.switchCase(node),</span>
<span class="line" id="L2433"> <span class="tok-kw">else</span> => <span class="tok-null">null</span>,</span>
<span class="line" id="L2434"> };</span>
<span class="line" id="L2435">}</span>
<span class="line" id="L2436"></span>
<span class="line" id="L2437"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fullAsm</span>(tree: Ast, node: Node.Index) ?full.Asm {</span>
<span class="line" id="L2438"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tree.nodes.items(.tag)[node]) {</span>
<span class="line" id="L2439"> .asm_simple => tree.asmSimple(node),</span>
<span class="line" id="L2440"> .@"asm" => tree.asmFull(node),</span>
<span class="line" id="L2441"> <span class="tok-kw">else</span> => <span class="tok-null">null</span>,</span>
<span class="line" id="L2442"> };</span>
<span class="line" id="L2443">}</span>
<span class="line" id="L2444"></span>
<span class="line" id="L2445"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fullCall</span>(tree: Ast, buffer: *[<span class="tok-number">1</span>]Ast.Node.Index, node: Node.Index) ?full.Call {</span>
<span class="line" id="L2446"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tree.nodes.items(.tag)[node]) {</span>
<span class="line" id="L2447"> .call, .call_comma, .async_call, .async_call_comma => tree.callFull(node),</span>
<span class="line" id="L2448"> .call_one, .call_one_comma, .async_call_one, .async_call_one_comma => tree.callOne(buffer, node),</span>
<span class="line" id="L2449"> <span class="tok-kw">else</span> => <span class="tok-null">null</span>,</span>
<span class="line" id="L2450"> };</span>
<span class="line" id="L2451">}</span>
<span class="line" id="L2452"></span>
<span class="line" id="L2453"><span class="tok-comment">/// Fully assembled AST node information.</span></span>
<span class="line" id="L2454"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> full = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2455"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> VarDecl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2456"> visib_token: ?TokenIndex,</span>
<span class="line" id="L2457"> extern_export_token: ?TokenIndex,</span>
<span class="line" id="L2458"> lib_name: ?TokenIndex,</span>
<span class="line" id="L2459"> threadlocal_token: ?TokenIndex,</span>
<span class="line" id="L2460"> comptime_token: ?TokenIndex,</span>
<span class="line" id="L2461"> ast: Components,</span>
<span class="line" id="L2462"></span>
<span class="line" id="L2463"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Components = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2464"> mut_token: TokenIndex,</span>
<span class="line" id="L2465"> type_node: Node.Index,</span>
<span class="line" id="L2466"> align_node: Node.Index,</span>
<span class="line" id="L2467"> addrspace_node: Node.Index,</span>
<span class="line" id="L2468"> section_node: Node.Index,</span>
<span class="line" id="L2469"> init_node: Node.Index,</span>
<span class="line" id="L2470"> };</span>
<span class="line" id="L2471"></span>
<span class="line" id="L2472"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">firstToken</span>(var_decl: VarDecl) TokenIndex {</span>
<span class="line" id="L2473"> <span class="tok-kw">return</span> var_decl.visib_token <span class="tok-kw">orelse</span></span>
<span class="line" id="L2474"> var_decl.extern_export_token <span class="tok-kw">orelse</span></span>
<span class="line" id="L2475"> var_decl.threadlocal_token <span class="tok-kw">orelse</span></span>
<span class="line" id="L2476"> var_decl.comptime_token <span class="tok-kw">orelse</span></span>
<span class="line" id="L2477"> var_decl.ast.mut_token;</span>
<span class="line" id="L2478"> }</span>
<span class="line" id="L2479"> };</span>
<span class="line" id="L2480"></span>
<span class="line" id="L2481"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> If = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2482"> <span class="tok-comment">/// Points to the first token after the `|`. Will either be an identifier or</span></span>
<span class="line" id="L2483"> <span class="tok-comment">/// a `*` (with an identifier immediately after it).</span></span>
<span class="line" id="L2484"> payload_token: ?TokenIndex,</span>
<span class="line" id="L2485"> <span class="tok-comment">/// Points to the identifier after the `|`.</span></span>
<span class="line" id="L2486"> error_token: ?TokenIndex,</span>
<span class="line" id="L2487"> <span class="tok-comment">/// Populated only if else_expr != 0.</span></span>
<span class="line" id="L2488"> else_token: TokenIndex,</span>
<span class="line" id="L2489"> ast: Components,</span>
<span class="line" id="L2490"></span>
<span class="line" id="L2491"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Components = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2492"> if_token: TokenIndex,</span>
<span class="line" id="L2493"> cond_expr: Node.Index,</span>
<span class="line" id="L2494"> then_expr: Node.Index,</span>
<span class="line" id="L2495"> else_expr: Node.Index,</span>
<span class="line" id="L2496"> };</span>
<span class="line" id="L2497"> };</span>
<span class="line" id="L2498"></span>
<span class="line" id="L2499"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> While = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2500"> ast: Components,</span>
<span class="line" id="L2501"> inline_token: ?TokenIndex,</span>
<span class="line" id="L2502"> label_token: ?TokenIndex,</span>
<span class="line" id="L2503"> payload_token: ?TokenIndex,</span>
<span class="line" id="L2504"> error_token: ?TokenIndex,</span>
<span class="line" id="L2505"> <span class="tok-comment">/// Populated only if else_expr != 0.</span></span>
<span class="line" id="L2506"> else_token: TokenIndex,</span>
<span class="line" id="L2507"></span>
<span class="line" id="L2508"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Components = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2509"> while_token: TokenIndex,</span>
<span class="line" id="L2510"> cond_expr: Node.Index,</span>
<span class="line" id="L2511"> cont_expr: Node.Index,</span>
<span class="line" id="L2512"> then_expr: Node.Index,</span>
<span class="line" id="L2513"> else_expr: Node.Index,</span>
<span class="line" id="L2514"> };</span>
<span class="line" id="L2515"> };</span>
<span class="line" id="L2516"></span>
<span class="line" id="L2517"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> For = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2518"> ast: Components,</span>
<span class="line" id="L2519"> inline_token: ?TokenIndex,</span>
<span class="line" id="L2520"> label_token: ?TokenIndex,</span>
<span class="line" id="L2521"> payload_token: TokenIndex,</span>
<span class="line" id="L2522"> <span class="tok-comment">/// Populated only if else_expr != 0.</span></span>
<span class="line" id="L2523"> else_token: TokenIndex,</span>
<span class="line" id="L2524"></span>
<span class="line" id="L2525"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Components = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2526"> for_token: TokenIndex,</span>
<span class="line" id="L2527"> inputs: []<span class="tok-kw">const</span> Node.Index,</span>
<span class="line" id="L2528"> then_expr: Node.Index,</span>
<span class="line" id="L2529"> else_expr: Node.Index,</span>
<span class="line" id="L2530"> };</span>
<span class="line" id="L2531"></span>
<span class="line" id="L2532"> <span class="tok-comment">/// TODO: remove this after zig 0.11.0 is tagged.</span></span>
<span class="line" id="L2533"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isOldSyntax</span>(f: For, token_tags: []<span class="tok-kw">const</span> Token.Tag) <span class="tok-type">bool</span> {</span>
<span class="line" id="L2534"> <span class="tok-kw">if</span> (f.ast.inputs.len != <span class="tok-number">1</span>) <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L2535"> <span class="tok-kw">if</span> (token_tags[f.payload_token + <span class="tok-number">1</span>] == .comma) <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L2536"> <span class="tok-kw">if</span> (token_tags[f.payload_token] == .asterisk <span class="tok-kw">and</span></span>
<span class="line" id="L2537"> token_tags[f.payload_token + <span class="tok-number">2</span>] == .comma)</span>
<span class="line" id="L2538"> {</span>
<span class="line" id="L2539"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L2540"> }</span>
<span class="line" id="L2541"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L2542"> }</span>
<span class="line" id="L2543"> };</span>
<span class="line" id="L2544"></span>
<span class="line" id="L2545"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ContainerField = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2546"> comptime_token: ?TokenIndex,</span>
<span class="line" id="L2547"> ast: Components,</span>
<span class="line" id="L2548"></span>
<span class="line" id="L2549"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Components = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2550"> main_token: TokenIndex,</span>
<span class="line" id="L2551"> type_expr: Node.Index,</span>
<span class="line" id="L2552"> value_expr: Node.Index,</span>
<span class="line" id="L2553"> align_expr: Node.Index,</span>
<span class="line" id="L2554"> tuple_like: <span class="tok-type">bool</span>,</span>
<span class="line" id="L2555"> };</span>
<span class="line" id="L2556"></span>
<span class="line" id="L2557"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">firstToken</span>(cf: ContainerField) TokenIndex {</span>
<span class="line" id="L2558"> <span class="tok-kw">return</span> cf.comptime_token <span class="tok-kw">orelse</span> cf.ast.main_token;</span>
<span class="line" id="L2559"> }</span>
<span class="line" id="L2560"></span>
<span class="line" id="L2561"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">convertToNonTupleLike</span>(cf: *ContainerField, nodes: NodeList.Slice) <span class="tok-type">void</span> {</span>
<span class="line" id="L2562"> <span class="tok-kw">if</span> (!cf.ast.tuple_like) <span class="tok-kw">return</span>;</span>
<span class="line" id="L2563"> <span class="tok-kw">if</span> (cf.ast.type_expr == <span class="tok-number">0</span>) <span class="tok-kw">return</span>;</span>
<span class="line" id="L2564"> <span class="tok-kw">if</span> (nodes.items(.tag)[cf.ast.type_expr] != .identifier) <span class="tok-kw">return</span>;</span>
<span class="line" id="L2565"></span>
<span class="line" id="L2566"> <span class="tok-kw">const</span> ident = nodes.items(.main_token)[cf.ast.type_expr];</span>
<span class="line" id="L2567"> cf.ast.tuple_like = <span class="tok-null">false</span>;</span>
<span class="line" id="L2568"> cf.ast.main_token = ident;</span>
<span class="line" id="L2569"> cf.ast.type_expr = <span class="tok-number">0</span>;</span>
<span class="line" id="L2570"> }</span>
<span class="line" id="L2571"> };</span>
<span class="line" id="L2572"></span>
<span class="line" id="L2573"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> FnProto = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2574"> visib_token: ?TokenIndex,</span>
<span class="line" id="L2575"> extern_export_inline_token: ?TokenIndex,</span>
<span class="line" id="L2576"> lib_name: ?TokenIndex,</span>
<span class="line" id="L2577"> name_token: ?TokenIndex,</span>
<span class="line" id="L2578"> lparen: TokenIndex,</span>
<span class="line" id="L2579"> ast: Components,</span>
<span class="line" id="L2580"></span>
<span class="line" id="L2581"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Components = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2582"> proto_node: Node.Index,</span>
<span class="line" id="L2583"> fn_token: TokenIndex,</span>
<span class="line" id="L2584"> return_type: Node.Index,</span>
<span class="line" id="L2585"> params: []<span class="tok-kw">const</span> Node.Index,</span>
<span class="line" id="L2586"> align_expr: Node.Index,</span>
<span class="line" id="L2587"> addrspace_expr: Node.Index,</span>
<span class="line" id="L2588"> section_expr: Node.Index,</span>
<span class="line" id="L2589"> callconv_expr: Node.Index,</span>
<span class="line" id="L2590"> };</span>
<span class="line" id="L2591"></span>
<span class="line" id="L2592"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Param = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2593"> first_doc_comment: ?TokenIndex,</span>
<span class="line" id="L2594"> name_token: ?TokenIndex,</span>
<span class="line" id="L2595"> comptime_noalias: ?TokenIndex,</span>
<span class="line" id="L2596"> anytype_ellipsis3: ?TokenIndex,</span>
<span class="line" id="L2597"> type_expr: Node.Index,</span>
<span class="line" id="L2598"> };</span>
<span class="line" id="L2599"></span>
<span class="line" id="L2600"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">firstToken</span>(fn_proto: FnProto) TokenIndex {</span>
<span class="line" id="L2601"> <span class="tok-kw">return</span> fn_proto.visib_token <span class="tok-kw">orelse</span></span>
<span class="line" id="L2602"> fn_proto.extern_export_inline_token <span class="tok-kw">orelse</span></span>
<span class="line" id="L2603"> fn_proto.ast.fn_token;</span>
<span class="line" id="L2604"> }</span>
<span class="line" id="L2605"></span>
<span class="line" id="L2606"> <span class="tok-comment">/// Abstracts over the fact that anytype and ... are not included</span></span>
<span class="line" id="L2607"> <span class="tok-comment">/// in the params slice, since they are simple identifiers and</span></span>
<span class="line" id="L2608"> <span class="tok-comment">/// not sub-expressions.</span></span>
<span class="line" id="L2609"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Iterator = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2610"> tree: *<span class="tok-kw">const</span> Ast,</span>
<span class="line" id="L2611"> fn_proto: *<span class="tok-kw">const</span> FnProto,</span>
<span class="line" id="L2612"> param_i: <span class="tok-type">usize</span>,</span>
<span class="line" id="L2613"> tok_i: TokenIndex,</span>
<span class="line" id="L2614"> tok_flag: <span class="tok-type">bool</span>,</span>
<span class="line" id="L2615"></span>
<span class="line" id="L2616"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">next</span>(it: *Iterator) ?Param {</span>
<span class="line" id="L2617"> <span class="tok-kw">const</span> token_tags = it.tree.tokens.items(.tag);</span>
<span class="line" id="L2618"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L2619"> <span class="tok-kw">var</span> first_doc_comment: ?TokenIndex = <span class="tok-null">null</span>;</span>
<span class="line" id="L2620"> <span class="tok-kw">var</span> comptime_noalias: ?TokenIndex = <span class="tok-null">null</span>;</span>
<span class="line" id="L2621"> <span class="tok-kw">var</span> name_token: ?TokenIndex = <span class="tok-null">null</span>;</span>
<span class="line" id="L2622"> <span class="tok-kw">if</span> (!it.tok_flag) {</span>
<span class="line" id="L2623"> <span class="tok-kw">if</span> (it.param_i >= it.fn_proto.ast.params.len) {</span>
<span class="line" id="L2624"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L2625"> }</span>
<span class="line" id="L2626"> <span class="tok-kw">const</span> param_type = it.fn_proto.ast.params[it.param_i];</span>
<span class="line" id="L2627"> <span class="tok-kw">var</span> tok_i = it.tree.firstToken(param_type) - <span class="tok-number">1</span>;</span>
<span class="line" id="L2628"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) : (tok_i -= <span class="tok-number">1</span>) <span class="tok-kw">switch</span> (token_tags[tok_i]) {</span>
<span class="line" id="L2629"> .colon => <span class="tok-kw">continue</span>,</span>
<span class="line" id="L2630"> .identifier => name_token = tok_i,</span>
<span class="line" id="L2631"> .doc_comment => first_doc_comment = tok_i,</span>
<span class="line" id="L2632"> .keyword_comptime, .keyword_noalias => comptime_noalias = tok_i,</span>
<span class="line" id="L2633"> <span class="tok-kw">else</span> => <span class="tok-kw">break</span>,</span>
<span class="line" id="L2634"> };</span>
<span class="line" id="L2635"> it.param_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2636"> it.tok_i = it.tree.lastToken(param_type) + <span class="tok-number">1</span>;</span>
<span class="line" id="L2637"> <span class="tok-comment">// Look for anytype and ... params afterwards.</span>
</span>
<span class="line" id="L2638"> <span class="tok-kw">if</span> (token_tags[it.tok_i] == .comma) {</span>
<span class="line" id="L2639"> it.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2640"> }</span>
<span class="line" id="L2641"> it.tok_flag = <span class="tok-null">true</span>;</span>
<span class="line" id="L2642"> <span class="tok-kw">return</span> Param{</span>
<span class="line" id="L2643"> .first_doc_comment = first_doc_comment,</span>
<span class="line" id="L2644"> .comptime_noalias = comptime_noalias,</span>
<span class="line" id="L2645"> .name_token = name_token,</span>
<span class="line" id="L2646"> .anytype_ellipsis3 = <span class="tok-null">null</span>,</span>
<span class="line" id="L2647"> .type_expr = param_type,</span>
<span class="line" id="L2648"> };</span>
<span class="line" id="L2649"> }</span>
<span class="line" id="L2650"> <span class="tok-kw">if</span> (token_tags[it.tok_i] == .comma) {</span>
<span class="line" id="L2651"> it.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2652"> }</span>
<span class="line" id="L2653"> <span class="tok-kw">if</span> (token_tags[it.tok_i] == .r_paren) {</span>
<span class="line" id="L2654"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L2655"> }</span>
<span class="line" id="L2656"> <span class="tok-kw">if</span> (token_tags[it.tok_i] == .doc_comment) {</span>
<span class="line" id="L2657"> first_doc_comment = it.tok_i;</span>
<span class="line" id="L2658"> <span class="tok-kw">while</span> (token_tags[it.tok_i] == .doc_comment) {</span>
<span class="line" id="L2659"> it.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2660"> }</span>
<span class="line" id="L2661"> }</span>
<span class="line" id="L2662"> <span class="tok-kw">switch</span> (token_tags[it.tok_i]) {</span>
<span class="line" id="L2663"> .ellipsis3 => {</span>
<span class="line" id="L2664"> it.tok_flag = <span class="tok-null">false</span>; <span class="tok-comment">// Next iteration should return null.</span>
</span>
<span class="line" id="L2665"> <span class="tok-kw">return</span> Param{</span>
<span class="line" id="L2666"> .first_doc_comment = first_doc_comment,</span>
<span class="line" id="L2667"> .comptime_noalias = <span class="tok-null">null</span>,</span>
<span class="line" id="L2668"> .name_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L2669"> .anytype_ellipsis3 = it.tok_i,</span>
<span class="line" id="L2670"> .type_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L2671"> };</span>
<span class="line" id="L2672"> },</span>
<span class="line" id="L2673"> .keyword_noalias, .keyword_comptime => {</span>
<span class="line" id="L2674"> comptime_noalias = it.tok_i;</span>
<span class="line" id="L2675"> it.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2676"> },</span>
<span class="line" id="L2677"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L2678"> }</span>
<span class="line" id="L2679"> <span class="tok-kw">if</span> (token_tags[it.tok_i] == .identifier <span class="tok-kw">and</span></span>
<span class="line" id="L2680"> token_tags[it.tok_i + <span class="tok-number">1</span>] == .colon)</span>
<span class="line" id="L2681"> {</span>
<span class="line" id="L2682"> name_token = it.tok_i;</span>
<span class="line" id="L2683"> it.tok_i += <span class="tok-number">2</span>;</span>
<span class="line" id="L2684"> }</span>
<span class="line" id="L2685"> <span class="tok-kw">if</span> (token_tags[it.tok_i] == .keyword_anytype) {</span>
<span class="line" id="L2686"> it.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2687"> <span class="tok-kw">return</span> Param{</span>
<span class="line" id="L2688"> .first_doc_comment = first_doc_comment,</span>
<span class="line" id="L2689"> .comptime_noalias = comptime_noalias,</span>
<span class="line" id="L2690"> .name_token = name_token,</span>
<span class="line" id="L2691"> .anytype_ellipsis3 = it.tok_i - <span class="tok-number">1</span>,</span>
<span class="line" id="L2692"> .type_expr = <span class="tok-number">0</span>,</span>
<span class="line" id="L2693"> };</span>
<span class="line" id="L2694"> }</span>
<span class="line" id="L2695"> it.tok_flag = <span class="tok-null">false</span>;</span>
<span class="line" id="L2696"> }</span>
<span class="line" id="L2697"> }</span>
<span class="line" id="L2698"> };</span>
<span class="line" id="L2699"></span>
<span class="line" id="L2700"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">iterate</span>(fn_proto: *<span class="tok-kw">const</span> FnProto, tree: *<span class="tok-kw">const</span> Ast) Iterator {</span>
<span class="line" id="L2701"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L2702"> .tree = tree,</span>
<span class="line" id="L2703"> .fn_proto = fn_proto,</span>
<span class="line" id="L2704"> .param_i = <span class="tok-number">0</span>,</span>
<span class="line" id="L2705"> .tok_i = fn_proto.lparen + <span class="tok-number">1</span>,</span>
<span class="line" id="L2706"> .tok_flag = <span class="tok-null">true</span>,</span>
<span class="line" id="L2707"> };</span>
<span class="line" id="L2708"> }</span>
<span class="line" id="L2709"> };</span>
<span class="line" id="L2710"></span>
<span class="line" id="L2711"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> StructInit = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2712"> ast: Components,</span>
<span class="line" id="L2713"></span>
<span class="line" id="L2714"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Components = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2715"> lbrace: TokenIndex,</span>
<span class="line" id="L2716"> fields: []<span class="tok-kw">const</span> Node.Index,</span>
<span class="line" id="L2717"> type_expr: Node.Index,</span>
<span class="line" id="L2718"> };</span>
<span class="line" id="L2719"> };</span>
<span class="line" id="L2720"></span>
<span class="line" id="L2721"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ArrayInit = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2722"> ast: Components,</span>
<span class="line" id="L2723"></span>
<span class="line" id="L2724"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Components = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2725"> lbrace: TokenIndex,</span>
<span class="line" id="L2726"> elements: []<span class="tok-kw">const</span> Node.Index,</span>
<span class="line" id="L2727"> type_expr: Node.Index,</span>
<span class="line" id="L2728"> };</span>
<span class="line" id="L2729"> };</span>
<span class="line" id="L2730"></span>
<span class="line" id="L2731"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ArrayType = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2732"> ast: Components,</span>
<span class="line" id="L2733"></span>
<span class="line" id="L2734"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Components = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2735"> lbracket: TokenIndex,</span>
<span class="line" id="L2736"> elem_count: Node.Index,</span>
<span class="line" id="L2737"> sentinel: Node.Index,</span>
<span class="line" id="L2738"> elem_type: Node.Index,</span>
<span class="line" id="L2739"> };</span>
<span class="line" id="L2740"> };</span>
<span class="line" id="L2741"></span>
<span class="line" id="L2742"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> PtrType = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2743"> size: std.builtin.Type.Pointer.Size,</span>
<span class="line" id="L2744"> allowzero_token: ?TokenIndex,</span>
<span class="line" id="L2745"> const_token: ?TokenIndex,</span>
<span class="line" id="L2746"> volatile_token: ?TokenIndex,</span>
<span class="line" id="L2747"> ast: Components,</span>
<span class="line" id="L2748"></span>
<span class="line" id="L2749"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Components = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2750"> main_token: TokenIndex,</span>
<span class="line" id="L2751"> align_node: Node.Index,</span>
<span class="line" id="L2752"> addrspace_node: Node.Index,</span>
<span class="line" id="L2753"> sentinel: Node.Index,</span>
<span class="line" id="L2754"> bit_range_start: Node.Index,</span>
<span class="line" id="L2755"> bit_range_end: Node.Index,</span>
<span class="line" id="L2756"> child_type: Node.Index,</span>
<span class="line" id="L2757"> };</span>
<span class="line" id="L2758"> };</span>
<span class="line" id="L2759"></span>
<span class="line" id="L2760"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Slice = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2761"> ast: Components,</span>
<span class="line" id="L2762"></span>
<span class="line" id="L2763"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Components = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2764"> sliced: Node.Index,</span>
<span class="line" id="L2765"> lbracket: TokenIndex,</span>
<span class="line" id="L2766"> start: Node.Index,</span>
<span class="line" id="L2767"> end: Node.Index,</span>
<span class="line" id="L2768"> sentinel: Node.Index,</span>
<span class="line" id="L2769"> };</span>
<span class="line" id="L2770"> };</span>
<span class="line" id="L2771"></span>
<span class="line" id="L2772"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ContainerDecl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2773"> layout_token: ?TokenIndex,</span>
<span class="line" id="L2774"> ast: Components,</span>
<span class="line" id="L2775"></span>
<span class="line" id="L2776"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Components = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2777"> main_token: TokenIndex,</span>
<span class="line" id="L2778"> <span class="tok-comment">/// Populated when main_token is Keyword_union.</span></span>
<span class="line" id="L2779"> enum_token: ?TokenIndex,</span>
<span class="line" id="L2780"> members: []<span class="tok-kw">const</span> Node.Index,</span>
<span class="line" id="L2781"> arg: Node.Index,</span>
<span class="line" id="L2782"> };</span>
<span class="line" id="L2783"> };</span>
<span class="line" id="L2784"></span>
<span class="line" id="L2785"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> SwitchCase = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2786"> inline_token: ?TokenIndex,</span>
<span class="line" id="L2787"> <span class="tok-comment">/// Points to the first token after the `|`. Will either be an identifier or</span></span>
<span class="line" id="L2788"> <span class="tok-comment">/// a `*` (with an identifier immediately after it).</span></span>
<span class="line" id="L2789"> payload_token: ?TokenIndex,</span>
<span class="line" id="L2790"> ast: Components,</span>
<span class="line" id="L2791"></span>
<span class="line" id="L2792"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Components = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2793"> <span class="tok-comment">/// If empty, this is an else case</span></span>
<span class="line" id="L2794"> values: []<span class="tok-kw">const</span> Node.Index,</span>
<span class="line" id="L2795"> arrow_token: TokenIndex,</span>
<span class="line" id="L2796"> target_expr: Node.Index,</span>
<span class="line" id="L2797"> };</span>
<span class="line" id="L2798"> };</span>
<span class="line" id="L2799"></span>
<span class="line" id="L2800"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Asm = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2801"> ast: Components,</span>
<span class="line" id="L2802"> volatile_token: ?TokenIndex,</span>
<span class="line" id="L2803"> first_clobber: ?TokenIndex,</span>
<span class="line" id="L2804"> outputs: []<span class="tok-kw">const</span> Node.Index,</span>
<span class="line" id="L2805"> inputs: []<span class="tok-kw">const</span> Node.Index,</span>
<span class="line" id="L2806"></span>
<span class="line" id="L2807"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Components = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2808"> asm_token: TokenIndex,</span>
<span class="line" id="L2809"> template: Node.Index,</span>
<span class="line" id="L2810"> items: []<span class="tok-kw">const</span> Node.Index,</span>
<span class="line" id="L2811"> rparen: TokenIndex,</span>
<span class="line" id="L2812"> };</span>
<span class="line" id="L2813"> };</span>
<span class="line" id="L2814"></span>
<span class="line" id="L2815"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Call = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2816"> ast: Components,</span>
<span class="line" id="L2817"> async_token: ?TokenIndex,</span>
<span class="line" id="L2818"></span>
<span class="line" id="L2819"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Components = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2820"> lparen: TokenIndex,</span>
<span class="line" id="L2821"> fn_expr: Node.Index,</span>
<span class="line" id="L2822"> params: []<span class="tok-kw">const</span> Node.Index,</span>
<span class="line" id="L2823"> };</span>
<span class="line" id="L2824"> };</span>
<span class="line" id="L2825">};</span>
<span class="line" id="L2826"></span>
<span class="line" id="L2827"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2828"> tag: Tag,</span>
<span class="line" id="L2829"> is_note: <span class="tok-type">bool</span> = <span class="tok-null">false</span>,</span>
<span class="line" id="L2830"> <span class="tok-comment">/// True if `token` points to the token before the token causing an issue.</span></span>
<span class="line" id="L2831"> token_is_prev: <span class="tok-type">bool</span> = <span class="tok-null">false</span>,</span>
<span class="line" id="L2832"> token: TokenIndex,</span>
<span class="line" id="L2833"> extra: <span class="tok-kw">union</span> {</span>
<span class="line" id="L2834"> none: <span class="tok-type">void</span>,</span>
<span class="line" id="L2835"> expected_tag: Token.Tag,</span>
<span class="line" id="L2836"> } = .{ .none = {} },</span>
<span class="line" id="L2837"></span>
<span class="line" id="L2838"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Tag = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L2839"> asterisk_after_ptr_deref,</span>
<span class="line" id="L2840"> chained_comparison_operators,</span>
<span class="line" id="L2841"> decl_between_fields,</span>
<span class="line" id="L2842"> expected_block,</span>
<span class="line" id="L2843"> expected_block_or_assignment,</span>
<span class="line" id="L2844"> expected_block_or_expr,</span>
<span class="line" id="L2845"> expected_block_or_field,</span>
<span class="line" id="L2846"> expected_container_members,</span>
<span class="line" id="L2847"> expected_expr,</span>
<span class="line" id="L2848"> expected_expr_or_assignment,</span>
<span class="line" id="L2849"> expected_fn,</span>
<span class="line" id="L2850"> expected_inlinable,</span>
<span class="line" id="L2851"> expected_labelable,</span>
<span class="line" id="L2852"> expected_param_list,</span>
<span class="line" id="L2853"> expected_prefix_expr,</span>
<span class="line" id="L2854"> expected_primary_type_expr,</span>
<span class="line" id="L2855"> expected_pub_item,</span>
<span class="line" id="L2856"> expected_return_type,</span>
<span class="line" id="L2857"> expected_semi_or_else,</span>
<span class="line" id="L2858"> expected_semi_or_lbrace,</span>
<span class="line" id="L2859"> expected_statement,</span>
<span class="line" id="L2860"> expected_suffix_op,</span>
<span class="line" id="L2861"> expected_type_expr,</span>
<span class="line" id="L2862"> expected_var_decl,</span>
<span class="line" id="L2863"> expected_var_decl_or_fn,</span>
<span class="line" id="L2864"> expected_loop_payload,</span>
<span class="line" id="L2865"> expected_container,</span>
<span class="line" id="L2866"> extern_fn_body,</span>
<span class="line" id="L2867"> extra_addrspace_qualifier,</span>
<span class="line" id="L2868"> extra_align_qualifier,</span>
<span class="line" id="L2869"> extra_allowzero_qualifier,</span>
<span class="line" id="L2870"> extra_const_qualifier,</span>
<span class="line" id="L2871"> extra_volatile_qualifier,</span>
<span class="line" id="L2872"> ptr_mod_on_array_child_type,</span>
<span class="line" id="L2873"> invalid_bit_range,</span>
<span class="line" id="L2874"> same_line_doc_comment,</span>
<span class="line" id="L2875"> unattached_doc_comment,</span>
<span class="line" id="L2876"> test_doc_comment,</span>
<span class="line" id="L2877"> comptime_doc_comment,</span>
<span class="line" id="L2878"> varargs_nonfinal,</span>
<span class="line" id="L2879"> expected_continue_expr,</span>
<span class="line" id="L2880"> expected_semi_after_decl,</span>
<span class="line" id="L2881"> expected_semi_after_stmt,</span>
<span class="line" id="L2882"> expected_comma_after_field,</span>
<span class="line" id="L2883"> expected_comma_after_arg,</span>
<span class="line" id="L2884"> expected_comma_after_param,</span>
<span class="line" id="L2885"> expected_comma_after_initializer,</span>
<span class="line" id="L2886"> expected_comma_after_switch_prong,</span>
<span class="line" id="L2887"> expected_comma_after_for_operand,</span>
<span class="line" id="L2888"> expected_comma_after_capture,</span>
<span class="line" id="L2889"> expected_initializer,</span>
<span class="line" id="L2890"> mismatched_binary_op_whitespace,</span>
<span class="line" id="L2891"> invalid_ampersand_ampersand,</span>
<span class="line" id="L2892"> c_style_container,</span>
<span class="line" id="L2893"> expected_var_const,</span>
<span class="line" id="L2894"> wrong_equal_var_decl,</span>
<span class="line" id="L2895"> var_const_decl,</span>
<span class="line" id="L2896"> extra_for_capture,</span>
<span class="line" id="L2897"> for_input_not_captured,</span>
<span class="line" id="L2898"></span>
<span class="line" id="L2899"> zig_style_container,</span>
<span class="line" id="L2900"> previous_field,</span>
<span class="line" id="L2901"> next_field,</span>
<span class="line" id="L2902"></span>
<span class="line" id="L2903"> <span class="tok-comment">/// `expected_tag` is populated.</span></span>
<span class="line" id="L2904"> expected_token,</span>
<span class="line" id="L2905"> };</span>
<span class="line" id="L2906">};</span>
<span class="line" id="L2907"></span>
<span class="line" id="L2908"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Node = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2909"> tag: Tag,</span>
<span class="line" id="L2910"> main_token: TokenIndex,</span>
<span class="line" id="L2911"> data: Data,</span>
<span class="line" id="L2912"></span>
<span class="line" id="L2913"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Index = <span class="tok-type">u32</span>;</span>
<span class="line" id="L2914"></span>
<span class="line" id="L2915"> <span class="tok-kw">comptime</span> {</span>
<span class="line" id="L2916"> <span class="tok-comment">// Goal is to keep this under one byte for efficiency.</span>
</span>
<span class="line" id="L2917"> assert(<span class="tok-builtin">@sizeOf</span>(Tag) == <span class="tok-number">1</span>);</span>
<span class="line" id="L2918"> }</span>
<span class="line" id="L2919"></span>
<span class="line" id="L2920"> <span class="tok-comment">/// Note: The FooComma/FooSemicolon variants exist to ease the implementation of</span></span>
<span class="line" id="L2921"> <span class="tok-comment">/// Ast.lastToken()</span></span>
<span class="line" id="L2922"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Tag = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L2923"> <span class="tok-comment">/// sub_list[lhs...rhs]</span></span>
<span class="line" id="L2924"> root,</span>
<span class="line" id="L2925"> <span class="tok-comment">/// `usingnamespace lhs;`. rhs unused. main_token is `usingnamespace`.</span></span>
<span class="line" id="L2926"> @"usingnamespace",</span>
<span class="line" id="L2927"> <span class="tok-comment">/// lhs is test name token (must be string literal or identifier), if any.</span></span>
<span class="line" id="L2928"> <span class="tok-comment">/// rhs is the body node.</span></span>
<span class="line" id="L2929"> test_decl,</span>
<span class="line" id="L2930"> <span class="tok-comment">/// lhs is the index into extra_data.</span></span>
<span class="line" id="L2931"> <span class="tok-comment">/// rhs is the initialization expression, if any.</span></span>
<span class="line" id="L2932"> <span class="tok-comment">/// main_token is `var` or `const`.</span></span>
<span class="line" id="L2933"> global_var_decl,</span>
<span class="line" id="L2934"> <span class="tok-comment">/// `var a: x align(y) = rhs`</span></span>
<span class="line" id="L2935"> <span class="tok-comment">/// lhs is the index into extra_data.</span></span>
<span class="line" id="L2936"> <span class="tok-comment">/// main_token is `var` or `const`.</span></span>
<span class="line" id="L2937"> local_var_decl,</span>
<span class="line" id="L2938"> <span class="tok-comment">/// `var a: lhs = rhs`. lhs and rhs may be unused.</span></span>
<span class="line" id="L2939"> <span class="tok-comment">/// Can be local or global.</span></span>
<span class="line" id="L2940"> <span class="tok-comment">/// main_token is `var` or `const`.</span></span>
<span class="line" id="L2941"> simple_var_decl,</span>
<span class="line" id="L2942"> <span class="tok-comment">/// `var a align(lhs) = rhs`. lhs and rhs may be unused.</span></span>
<span class="line" id="L2943"> <span class="tok-comment">/// Can be local or global.</span></span>
<span class="line" id="L2944"> <span class="tok-comment">/// main_token is `var` or `const`.</span></span>
<span class="line" id="L2945"> aligned_var_decl,</span>
<span class="line" id="L2946"> <span class="tok-comment">/// lhs is the identifier token payload if any,</span></span>
<span class="line" id="L2947"> <span class="tok-comment">/// rhs is the deferred expression.</span></span>
<span class="line" id="L2948"> @"errdefer",</span>
<span class="line" id="L2949"> <span class="tok-comment">/// lhs is unused.</span></span>
<span class="line" id="L2950"> <span class="tok-comment">/// rhs is the deferred expression.</span></span>
<span class="line" id="L2951"> @"defer",</span>
<span class="line" id="L2952"> <span class="tok-comment">/// lhs catch rhs</span></span>
<span class="line" id="L2953"> <span class="tok-comment">/// lhs catch |err| rhs</span></span>
<span class="line" id="L2954"> <span class="tok-comment">/// main_token is the `catch` keyword.</span></span>
<span class="line" id="L2955"> <span class="tok-comment">/// payload is determined by looking at the next token after the `catch` keyword.</span></span>
<span class="line" id="L2956"> @"catch",</span>
<span class="line" id="L2957"> <span class="tok-comment">/// `lhs.a`. main_token is the dot. rhs is the identifier token index.</span></span>
<span class="line" id="L2958"> field_access,</span>
<span class="line" id="L2959"> <span class="tok-comment">/// `lhs.?`. main_token is the dot. rhs is the `?` token index.</span></span>
<span class="line" id="L2960"> unwrap_optional,</span>
<span class="line" id="L2961"> <span class="tok-comment">/// `lhs == rhs`. main_token is op.</span></span>
<span class="line" id="L2962"> equal_equal,</span>
<span class="line" id="L2963"> <span class="tok-comment">/// `lhs != rhs`. main_token is op.</span></span>
<span class="line" id="L2964"> bang_equal,</span>
<span class="line" id="L2965"> <span class="tok-comment">/// `lhs < rhs`. main_token is op.</span></span>
<span class="line" id="L2966"> less_than,</span>
<span class="line" id="L2967"> <span class="tok-comment">/// `lhs > rhs`. main_token is op.</span></span>
<span class="line" id="L2968"> greater_than,</span>
<span class="line" id="L2969"> <span class="tok-comment">/// `lhs <= rhs`. main_token is op.</span></span>
<span class="line" id="L2970"> less_or_equal,</span>
<span class="line" id="L2971"> <span class="tok-comment">/// `lhs >= rhs`. main_token is op.</span></span>
<span class="line" id="L2972"> greater_or_equal,</span>
<span class="line" id="L2973"> <span class="tok-comment">/// `lhs *= rhs`. main_token is op.</span></span>
<span class="line" id="L2974"> assign_mul,</span>
<span class="line" id="L2975"> <span class="tok-comment">/// `lhs /= rhs`. main_token is op.</span></span>
<span class="line" id="L2976"> assign_div,</span>
<span class="line" id="L2977"> <span class="tok-comment">/// `lhs *= rhs`. main_token is op.</span></span>
<span class="line" id="L2978"> assign_mod,</span>
<span class="line" id="L2979"> <span class="tok-comment">/// `lhs += rhs`. main_token is op.</span></span>
<span class="line" id="L2980"> assign_add,</span>
<span class="line" id="L2981"> <span class="tok-comment">/// `lhs -= rhs`. main_token is op.</span></span>
<span class="line" id="L2982"> assign_sub,</span>
<span class="line" id="L2983"> <span class="tok-comment">/// `lhs <<= rhs`. main_token is op.</span></span>
<span class="line" id="L2984"> assign_shl,</span>
<span class="line" id="L2985"> <span class="tok-comment">/// `lhs <<|= rhs`. main_token is op.</span></span>
<span class="line" id="L2986"> assign_shl_sat,</span>
<span class="line" id="L2987"> <span class="tok-comment">/// `lhs >>= rhs`. main_token is op.</span></span>
<span class="line" id="L2988"> assign_shr,</span>
<span class="line" id="L2989"> <span class="tok-comment">/// `lhs &= rhs`. main_token is op.</span></span>
<span class="line" id="L2990"> assign_bit_and,</span>
<span class="line" id="L2991"> <span class="tok-comment">/// `lhs ^= rhs`. main_token is op.</span></span>
<span class="line" id="L2992"> assign_bit_xor,</span>
<span class="line" id="L2993"> <span class="tok-comment">/// `lhs |= rhs`. main_token is op.</span></span>
<span class="line" id="L2994"> assign_bit_or,</span>
<span class="line" id="L2995"> <span class="tok-comment">/// `lhs *%= rhs`. main_token is op.</span></span>
<span class="line" id="L2996"> assign_mul_wrap,</span>
<span class="line" id="L2997"> <span class="tok-comment">/// `lhs +%= rhs`. main_token is op.</span></span>
<span class="line" id="L2998"> assign_add_wrap,</span>
<span class="line" id="L2999"> <span class="tok-comment">/// `lhs -%= rhs`. main_token is op.</span></span>
<span class="line" id="L3000"> assign_sub_wrap,</span>
<span class="line" id="L3001"> <span class="tok-comment">/// `lhs *|= rhs`. main_token is op.</span></span>
<span class="line" id="L3002"> assign_mul_sat,</span>
<span class="line" id="L3003"> <span class="tok-comment">/// `lhs +|= rhs`. main_token is op.</span></span>
<span class="line" id="L3004"> assign_add_sat,</span>
<span class="line" id="L3005"> <span class="tok-comment">/// `lhs -|= rhs`. main_token is op.</span></span>
<span class="line" id="L3006"> assign_sub_sat,</span>
<span class="line" id="L3007"> <span class="tok-comment">/// `lhs = rhs`. main_token is op.</span></span>
<span class="line" id="L3008"> assign,</span>
<span class="line" id="L3009"> <span class="tok-comment">/// `lhs || rhs`. main_token is the `||`.</span></span>
<span class="line" id="L3010"> merge_error_sets,</span>
<span class="line" id="L3011"> <span class="tok-comment">/// `lhs * rhs`. main_token is the `*`.</span></span>
<span class="line" id="L3012"> mul,</span>
<span class="line" id="L3013"> <span class="tok-comment">/// `lhs / rhs`. main_token is the `/`.</span></span>
<span class="line" id="L3014"> div,</span>
<span class="line" id="L3015"> <span class="tok-comment">/// `lhs % rhs`. main_token is the `%`.</span></span>
<span class="line" id="L3016"> mod,</span>
<span class="line" id="L3017"> <span class="tok-comment">/// `lhs ** rhs`. main_token is the `**`.</span></span>
<span class="line" id="L3018"> array_mult,</span>
<span class="line" id="L3019"> <span class="tok-comment">/// `lhs *% rhs`. main_token is the `*%`.</span></span>
<span class="line" id="L3020"> mul_wrap,</span>
<span class="line" id="L3021"> <span class="tok-comment">/// `lhs *| rhs`. main_token is the `*|`.</span></span>
<span class="line" id="L3022"> mul_sat,</span>
<span class="line" id="L3023"> <span class="tok-comment">/// `lhs + rhs`. main_token is the `+`.</span></span>
<span class="line" id="L3024"> add,</span>
<span class="line" id="L3025"> <span class="tok-comment">/// `lhs - rhs`. main_token is the `-`.</span></span>
<span class="line" id="L3026"> sub,</span>
<span class="line" id="L3027"> <span class="tok-comment">/// `lhs ++ rhs`. main_token is the `++`.</span></span>
<span class="line" id="L3028"> array_cat,</span>
<span class="line" id="L3029"> <span class="tok-comment">/// `lhs +% rhs`. main_token is the `+%`.</span></span>
<span class="line" id="L3030"> add_wrap,</span>
<span class="line" id="L3031"> <span class="tok-comment">/// `lhs -% rhs`. main_token is the `-%`.</span></span>
<span class="line" id="L3032"> sub_wrap,</span>
<span class="line" id="L3033"> <span class="tok-comment">/// `lhs +| rhs`. main_token is the `+|`.</span></span>
<span class="line" id="L3034"> add_sat,</span>
<span class="line" id="L3035"> <span class="tok-comment">/// `lhs -| rhs`. main_token is the `-|`.</span></span>
<span class="line" id="L3036"> sub_sat,</span>
<span class="line" id="L3037"> <span class="tok-comment">/// `lhs << rhs`. main_token is the `<<`.</span></span>
<span class="line" id="L3038"> shl,</span>
<span class="line" id="L3039"> <span class="tok-comment">/// `lhs <<| rhs`. main_token is the `<<|`.</span></span>
<span class="line" id="L3040"> shl_sat,</span>
<span class="line" id="L3041"> <span class="tok-comment">/// `lhs >> rhs`. main_token is the `>>`.</span></span>
<span class="line" id="L3042"> shr,</span>
<span class="line" id="L3043"> <span class="tok-comment">/// `lhs & rhs`. main_token is the `&`.</span></span>
<span class="line" id="L3044"> bit_and,</span>
<span class="line" id="L3045"> <span class="tok-comment">/// `lhs ^ rhs`. main_token is the `^`.</span></span>
<span class="line" id="L3046"> bit_xor,</span>
<span class="line" id="L3047"> <span class="tok-comment">/// `lhs | rhs`. main_token is the `|`.</span></span>
<span class="line" id="L3048"> bit_or,</span>
<span class="line" id="L3049"> <span class="tok-comment">/// `lhs orelse rhs`. main_token is the `orelse`.</span></span>
<span class="line" id="L3050"> @"orelse",</span>
<span class="line" id="L3051"> <span class="tok-comment">/// `lhs and rhs`. main_token is the `and`.</span></span>
<span class="line" id="L3052"> bool_and,</span>
<span class="line" id="L3053"> <span class="tok-comment">/// `lhs or rhs`. main_token is the `or`.</span></span>
<span class="line" id="L3054"> bool_or,</span>
<span class="line" id="L3055"> <span class="tok-comment">/// `op lhs`. rhs unused. main_token is op.</span></span>
<span class="line" id="L3056"> bool_not,</span>
<span class="line" id="L3057"> <span class="tok-comment">/// `op lhs`. rhs unused. main_token is op.</span></span>
<span class="line" id="L3058"> negation,</span>
<span class="line" id="L3059"> <span class="tok-comment">/// `op lhs`. rhs unused. main_token is op.</span></span>
<span class="line" id="L3060"> bit_not,</span>
<span class="line" id="L3061"> <span class="tok-comment">/// `op lhs`. rhs unused. main_token is op.</span></span>
<span class="line" id="L3062"> negation_wrap,</span>
<span class="line" id="L3063"> <span class="tok-comment">/// `op lhs`. rhs unused. main_token is op.</span></span>
<span class="line" id="L3064"> address_of,</span>
<span class="line" id="L3065"> <span class="tok-comment">/// `op lhs`. rhs unused. main_token is op.</span></span>
<span class="line" id="L3066"> @"try",</span>
<span class="line" id="L3067"> <span class="tok-comment">/// `op lhs`. rhs unused. main_token is op.</span></span>
<span class="line" id="L3068"> @"await",</span>
<span class="line" id="L3069"> <span class="tok-comment">/// `?lhs`. rhs unused. main_token is the `?`.</span></span>
<span class="line" id="L3070"> optional_type,</span>
<span class="line" id="L3071"> <span class="tok-comment">/// `[lhs]rhs`.</span></span>
<span class="line" id="L3072"> array_type,</span>
<span class="line" id="L3073"> <span class="tok-comment">/// `[lhs:a]b`. `ArrayTypeSentinel[rhs]`.</span></span>
<span class="line" id="L3074"> array_type_sentinel,</span>
<span class="line" id="L3075"> <span class="tok-comment">/// `[*]align(lhs) rhs`. lhs can be omitted.</span></span>
<span class="line" id="L3076"> <span class="tok-comment">/// `*align(lhs) rhs`. lhs can be omitted.</span></span>
<span class="line" id="L3077"> <span class="tok-comment">/// `[]rhs`.</span></span>
<span class="line" id="L3078"> <span class="tok-comment">/// main_token is the asterisk if a pointer or the lbracket if a slice</span></span>
<span class="line" id="L3079"> <span class="tok-comment">/// main_token might be a ** token, which is shared with a parent/child</span></span>
<span class="line" id="L3080"> <span class="tok-comment">/// pointer type and may require special handling.</span></span>
<span class="line" id="L3081"> ptr_type_aligned,</span>
<span class="line" id="L3082"> <span class="tok-comment">/// `[*:lhs]rhs`. lhs can be omitted.</span></span>
<span class="line" id="L3083"> <span class="tok-comment">/// `*rhs`.</span></span>
<span class="line" id="L3084"> <span class="tok-comment">/// `[:lhs]rhs`.</span></span>
<span class="line" id="L3085"> <span class="tok-comment">/// main_token is the asterisk if a pointer or the lbracket if a slice</span></span>
<span class="line" id="L3086"> <span class="tok-comment">/// main_token might be a ** token, which is shared with a parent/child</span></span>
<span class="line" id="L3087"> <span class="tok-comment">/// pointer type and may require special handling.</span></span>
<span class="line" id="L3088"> ptr_type_sentinel,</span>
<span class="line" id="L3089"> <span class="tok-comment">/// lhs is index into ptr_type. rhs is the element type expression.</span></span>
<span class="line" id="L3090"> <span class="tok-comment">/// main_token is the asterisk if a pointer or the lbracket if a slice</span></span>
<span class="line" id="L3091"> <span class="tok-comment">/// main_token might be a ** token, which is shared with a parent/child</span></span>
<span class="line" id="L3092"> <span class="tok-comment">/// pointer type and may require special handling.</span></span>
<span class="line" id="L3093"> ptr_type,</span>
<span class="line" id="L3094"> <span class="tok-comment">/// lhs is index into ptr_type_bit_range. rhs is the element type expression.</span></span>
<span class="line" id="L3095"> <span class="tok-comment">/// main_token is the asterisk if a pointer or the lbracket if a slice</span></span>
<span class="line" id="L3096"> <span class="tok-comment">/// main_token might be a ** token, which is shared with a parent/child</span></span>
<span class="line" id="L3097"> <span class="tok-comment">/// pointer type and may require special handling.</span></span>
<span class="line" id="L3098"> ptr_type_bit_range,</span>
<span class="line" id="L3099"> <span class="tok-comment">/// `lhs[rhs..]`</span></span>
<span class="line" id="L3100"> <span class="tok-comment">/// main_token is the lbracket.</span></span>
<span class="line" id="L3101"> slice_open,</span>
<span class="line" id="L3102"> <span class="tok-comment">/// `lhs[b..c]`. rhs is index into Slice</span></span>
<span class="line" id="L3103"> <span class="tok-comment">/// main_token is the lbracket.</span></span>
<span class="line" id="L3104"> slice,</span>
<span class="line" id="L3105"> <span class="tok-comment">/// `lhs[b..c :d]`. rhs is index into SliceSentinel</span></span>
<span class="line" id="L3106"> <span class="tok-comment">/// main_token is the lbracket.</span></span>
<span class="line" id="L3107"> slice_sentinel,</span>
<span class="line" id="L3108"> <span class="tok-comment">/// `lhs.*`. rhs is unused.</span></span>
<span class="line" id="L3109"> deref,</span>
<span class="line" id="L3110"> <span class="tok-comment">/// `lhs[rhs]`.</span></span>
<span class="line" id="L3111"> array_access,</span>
<span class="line" id="L3112"> <span class="tok-comment">/// `lhs{rhs}`. rhs can be omitted.</span></span>
<span class="line" id="L3113"> array_init_one,</span>
<span class="line" id="L3114"> <span class="tok-comment">/// `lhs{rhs,}`. rhs can *not* be omitted</span></span>
<span class="line" id="L3115"> array_init_one_comma,</span>
<span class="line" id="L3116"> <span class="tok-comment">/// `.{lhs, rhs}`. lhs and rhs can be omitted.</span></span>
<span class="line" id="L3117"> array_init_dot_two,</span>
<span class="line" id="L3118"> <span class="tok-comment">/// Same as `array_init_dot_two` except there is known to be a trailing comma</span></span>
<span class="line" id="L3119"> <span class="tok-comment">/// before the final rbrace.</span></span>
<span class="line" id="L3120"> array_init_dot_two_comma,</span>
<span class="line" id="L3121"> <span class="tok-comment">/// `.{a, b}`. `sub_list[lhs..rhs]`.</span></span>
<span class="line" id="L3122"> array_init_dot,</span>
<span class="line" id="L3123"> <span class="tok-comment">/// Same as `array_init_dot` except there is known to be a trailing comma</span></span>
<span class="line" id="L3124"> <span class="tok-comment">/// before the final rbrace.</span></span>
<span class="line" id="L3125"> array_init_dot_comma,</span>
<span class="line" id="L3126"> <span class="tok-comment">/// `lhs{a, b}`. `sub_range_list[rhs]`. lhs can be omitted which means `.{a, b}`.</span></span>
<span class="line" id="L3127"> array_init,</span>
<span class="line" id="L3128"> <span class="tok-comment">/// Same as `array_init` except there is known to be a trailing comma</span></span>
<span class="line" id="L3129"> <span class="tok-comment">/// before the final rbrace.</span></span>
<span class="line" id="L3130"> array_init_comma,</span>
<span class="line" id="L3131"> <span class="tok-comment">/// `lhs{.a = rhs}`. rhs can be omitted making it empty.</span></span>
<span class="line" id="L3132"> <span class="tok-comment">/// main_token is the lbrace.</span></span>
<span class="line" id="L3133"> struct_init_one,</span>
<span class="line" id="L3134"> <span class="tok-comment">/// `lhs{.a = rhs,}`. rhs can *not* be omitted.</span></span>
<span class="line" id="L3135"> <span class="tok-comment">/// main_token is the lbrace.</span></span>
<span class="line" id="L3136"> struct_init_one_comma,</span>
<span class="line" id="L3137"> <span class="tok-comment">/// `.{.a = lhs, .b = rhs}`. lhs and rhs can be omitted.</span></span>
<span class="line" id="L3138"> <span class="tok-comment">/// main_token is the lbrace.</span></span>
<span class="line" id="L3139"> <span class="tok-comment">/// No trailing comma before the rbrace.</span></span>
<span class="line" id="L3140"> struct_init_dot_two,</span>
<span class="line" id="L3141"> <span class="tok-comment">/// Same as `struct_init_dot_two` except there is known to be a trailing comma</span></span>
<span class="line" id="L3142"> <span class="tok-comment">/// before the final rbrace.</span></span>
<span class="line" id="L3143"> struct_init_dot_two_comma,</span>
<span class="line" id="L3144"> <span class="tok-comment">/// `.{.a = b, .c = d}`. `sub_list[lhs..rhs]`.</span></span>
<span class="line" id="L3145"> <span class="tok-comment">/// main_token is the lbrace.</span></span>
<span class="line" id="L3146"> struct_init_dot,</span>
<span class="line" id="L3147"> <span class="tok-comment">/// Same as `struct_init_dot` except there is known to be a trailing comma</span></span>
<span class="line" id="L3148"> <span class="tok-comment">/// before the final rbrace.</span></span>
<span class="line" id="L3149"> struct_init_dot_comma,</span>
<span class="line" id="L3150"> <span class="tok-comment">/// `lhs{.a = b, .c = d}`. `sub_range_list[rhs]`.</span></span>
<span class="line" id="L3151"> <span class="tok-comment">/// lhs can be omitted which means `.{.a = b, .c = d}`.</span></span>
<span class="line" id="L3152"> <span class="tok-comment">/// main_token is the lbrace.</span></span>
<span class="line" id="L3153"> struct_init,</span>
<span class="line" id="L3154"> <span class="tok-comment">/// Same as `struct_init` except there is known to be a trailing comma</span></span>
<span class="line" id="L3155"> <span class="tok-comment">/// before the final rbrace.</span></span>
<span class="line" id="L3156"> struct_init_comma,</span>
<span class="line" id="L3157"> <span class="tok-comment">/// `lhs(rhs)`. rhs can be omitted.</span></span>
<span class="line" id="L3158"> <span class="tok-comment">/// main_token is the lparen.</span></span>
<span class="line" id="L3159"> call_one,</span>
<span class="line" id="L3160"> <span class="tok-comment">/// `lhs(rhs,)`. rhs can be omitted.</span></span>
<span class="line" id="L3161"> <span class="tok-comment">/// main_token is the lparen.</span></span>
<span class="line" id="L3162"> call_one_comma,</span>
<span class="line" id="L3163"> <span class="tok-comment">/// `async lhs(rhs)`. rhs can be omitted.</span></span>
<span class="line" id="L3164"> async_call_one,</span>
<span class="line" id="L3165"> <span class="tok-comment">/// `async lhs(rhs,)`.</span></span>
<span class="line" id="L3166"> async_call_one_comma,</span>
<span class="line" id="L3167"> <span class="tok-comment">/// `lhs(a, b, c)`. `SubRange[rhs]`.</span></span>
<span class="line" id="L3168"> <span class="tok-comment">/// main_token is the `(`.</span></span>
<span class="line" id="L3169"> call,</span>
<span class="line" id="L3170"> <span class="tok-comment">/// `lhs(a, b, c,)`. `SubRange[rhs]`.</span></span>
<span class="line" id="L3171"> <span class="tok-comment">/// main_token is the `(`.</span></span>
<span class="line" id="L3172"> call_comma,</span>
<span class="line" id="L3173"> <span class="tok-comment">/// `async lhs(a, b, c)`. `SubRange[rhs]`.</span></span>
<span class="line" id="L3174"> <span class="tok-comment">/// main_token is the `(`.</span></span>
<span class="line" id="L3175"> async_call,</span>
<span class="line" id="L3176"> <span class="tok-comment">/// `async lhs(a, b, c,)`. `SubRange[rhs]`.</span></span>
<span class="line" id="L3177"> <span class="tok-comment">/// main_token is the `(`.</span></span>
<span class="line" id="L3178"> async_call_comma,</span>
<span class="line" id="L3179"> <span class="tok-comment">/// `switch(lhs) {}`. `SubRange[rhs]`.</span></span>
<span class="line" id="L3180"> @"switch",</span>
<span class="line" id="L3181"> <span class="tok-comment">/// Same as switch except there is known to be a trailing comma</span></span>
<span class="line" id="L3182"> <span class="tok-comment">/// before the final rbrace</span></span>
<span class="line" id="L3183"> switch_comma,</span>
<span class="line" id="L3184"> <span class="tok-comment">/// `lhs => rhs`. If lhs is omitted it means `else`.</span></span>
<span class="line" id="L3185"> <span class="tok-comment">/// main_token is the `=>`</span></span>
<span class="line" id="L3186"> switch_case_one,</span>
<span class="line" id="L3187"> <span class="tok-comment">/// Same ast `switch_case_one` but the case is inline</span></span>
<span class="line" id="L3188"> switch_case_inline_one,</span>
<span class="line" id="L3189"> <span class="tok-comment">/// `a, b, c => rhs`. `SubRange[lhs]`.</span></span>
<span class="line" id="L3190"> <span class="tok-comment">/// main_token is the `=>`</span></span>
<span class="line" id="L3191"> switch_case,</span>
<span class="line" id="L3192"> <span class="tok-comment">/// Same ast `switch_case` but the case is inline</span></span>
<span class="line" id="L3193"> switch_case_inline,</span>
<span class="line" id="L3194"> <span class="tok-comment">/// `lhs...rhs`.</span></span>
<span class="line" id="L3195"> switch_range,</span>
<span class="line" id="L3196"> <span class="tok-comment">/// `while (lhs) rhs`.</span></span>
<span class="line" id="L3197"> <span class="tok-comment">/// `while (lhs) |x| rhs`.</span></span>
<span class="line" id="L3198"> while_simple,</span>
<span class="line" id="L3199"> <span class="tok-comment">/// `while (lhs) : (a) b`. `WhileCont[rhs]`.</span></span>
<span class="line" id="L3200"> <span class="tok-comment">/// `while (lhs) : (a) b`. `WhileCont[rhs]`.</span></span>
<span class="line" id="L3201"> while_cont,</span>
<span class="line" id="L3202"> <span class="tok-comment">/// `while (lhs) : (a) b else c`. `While[rhs]`.</span></span>
<span class="line" id="L3203"> <span class="tok-comment">/// `while (lhs) |x| : (a) b else c`. `While[rhs]`.</span></span>
<span class="line" id="L3204"> <span class="tok-comment">/// `while (lhs) |x| : (a) b else |y| c`. `While[rhs]`.</span></span>
<span class="line" id="L3205"> @"while",</span>
<span class="line" id="L3206"> <span class="tok-comment">/// `for (lhs) rhs`.</span></span>
<span class="line" id="L3207"> for_simple,</span>
<span class="line" id="L3208"> <span class="tok-comment">/// `for (lhs[0..inputs]) lhs[inputs + 1] else lhs[inputs + 2]`. `For[rhs]`.</span></span>
<span class="line" id="L3209"> @"for",</span>
<span class="line" id="L3210"> <span class="tok-comment">/// `lhs..rhs`.</span></span>
<span class="line" id="L3211"> for_range,</span>
<span class="line" id="L3212"> <span class="tok-comment">/// `if (lhs) rhs`.</span></span>
<span class="line" id="L3213"> <span class="tok-comment">/// `if (lhs) |a| rhs`.</span></span>
<span class="line" id="L3214"> if_simple,</span>
<span class="line" id="L3215"> <span class="tok-comment">/// `if (lhs) a else b`. `If[rhs]`.</span></span>
<span class="line" id="L3216"> <span class="tok-comment">/// `if (lhs) |x| a else b`. `If[rhs]`.</span></span>
<span class="line" id="L3217"> <span class="tok-comment">/// `if (lhs) |x| a else |y| b`. `If[rhs]`.</span></span>
<span class="line" id="L3218"> @"if",</span>
<span class="line" id="L3219"> <span class="tok-comment">/// `suspend lhs`. lhs can be omitted. rhs is unused.</span></span>
<span class="line" id="L3220"> @"suspend",</span>
<span class="line" id="L3221"> <span class="tok-comment">/// `resume lhs`. rhs is unused.</span></span>
<span class="line" id="L3222"> @"resume",</span>
<span class="line" id="L3223"> <span class="tok-comment">/// `continue`. lhs is token index of label if any. rhs is unused.</span></span>
<span class="line" id="L3224"> @"continue",</span>
<span class="line" id="L3225"> <span class="tok-comment">/// `break :lhs rhs`</span></span>
<span class="line" id="L3226"> <span class="tok-comment">/// both lhs and rhs may be omitted.</span></span>
<span class="line" id="L3227"> @"break",</span>
<span class="line" id="L3228"> <span class="tok-comment">/// `return lhs`. lhs can be omitted. rhs is unused.</span></span>
<span class="line" id="L3229"> @"return",</span>
<span class="line" id="L3230"> <span class="tok-comment">/// `fn(a: lhs) rhs`. lhs can be omitted.</span></span>
<span class="line" id="L3231"> <span class="tok-comment">/// anytype and ... parameters are omitted from the AST tree.</span></span>
<span class="line" id="L3232"> <span class="tok-comment">/// main_token is the `fn` keyword.</span></span>
<span class="line" id="L3233"> <span class="tok-comment">/// extern function declarations use this tag.</span></span>
<span class="line" id="L3234"> fn_proto_simple,</span>
<span class="line" id="L3235"> <span class="tok-comment">/// `fn(a: b, c: d) rhs`. `sub_range_list[lhs]`.</span></span>
<span class="line" id="L3236"> <span class="tok-comment">/// anytype and ... parameters are omitted from the AST tree.</span></span>
<span class="line" id="L3237"> <span class="tok-comment">/// main_token is the `fn` keyword.</span></span>
<span class="line" id="L3238"> <span class="tok-comment">/// extern function declarations use this tag.</span></span>
<span class="line" id="L3239"> fn_proto_multi,</span>
<span class="line" id="L3240"> <span class="tok-comment">/// `fn(a: b) rhs addrspace(e) linksection(f) callconv(g)`. `FnProtoOne[lhs]`.</span></span>
<span class="line" id="L3241"> <span class="tok-comment">/// zero or one parameters.</span></span>
<span class="line" id="L3242"> <span class="tok-comment">/// anytype and ... parameters are omitted from the AST tree.</span></span>
<span class="line" id="L3243"> <span class="tok-comment">/// main_token is the `fn` keyword.</span></span>
<span class="line" id="L3244"> <span class="tok-comment">/// extern function declarations use this tag.</span></span>
<span class="line" id="L3245"> fn_proto_one,</span>
<span class="line" id="L3246"> <span class="tok-comment">/// `fn(a: b, c: d) rhs addrspace(e) linksection(f) callconv(g)`. `FnProto[lhs]`.</span></span>
<span class="line" id="L3247"> <span class="tok-comment">/// anytype and ... parameters are omitted from the AST tree.</span></span>
<span class="line" id="L3248"> <span class="tok-comment">/// main_token is the `fn` keyword.</span></span>
<span class="line" id="L3249"> <span class="tok-comment">/// extern function declarations use this tag.</span></span>
<span class="line" id="L3250"> fn_proto,</span>
<span class="line" id="L3251"> <span class="tok-comment">/// lhs is the fn_proto.</span></span>
<span class="line" id="L3252"> <span class="tok-comment">/// rhs is the function body block.</span></span>
<span class="line" id="L3253"> <span class="tok-comment">/// Note that extern function declarations use the fn_proto tags rather</span></span>
<span class="line" id="L3254"> <span class="tok-comment">/// than this one.</span></span>
<span class="line" id="L3255"> fn_decl,</span>
<span class="line" id="L3256"> <span class="tok-comment">/// `anyframe->rhs`. main_token is `anyframe`. `lhs` is arrow token index.</span></span>
<span class="line" id="L3257"> anyframe_type,</span>
<span class="line" id="L3258"> <span class="tok-comment">/// Both lhs and rhs unused.</span></span>
<span class="line" id="L3259"> anyframe_literal,</span>
<span class="line" id="L3260"> <span class="tok-comment">/// Both lhs and rhs unused.</span></span>
<span class="line" id="L3261"> char_literal,</span>
<span class="line" id="L3262"> <span class="tok-comment">/// Both lhs and rhs unused.</span></span>
<span class="line" id="L3263"> number_literal,</span>
<span class="line" id="L3264"> <span class="tok-comment">/// Both lhs and rhs unused.</span></span>
<span class="line" id="L3265"> unreachable_literal,</span>
<span class="line" id="L3266"> <span class="tok-comment">/// Both lhs and rhs unused.</span></span>
<span class="line" id="L3267"> <span class="tok-comment">/// Most identifiers will not have explicit AST nodes, however for expressions</span></span>
<span class="line" id="L3268"> <span class="tok-comment">/// which could be one of many different kinds of AST nodes, there will be an</span></span>
<span class="line" id="L3269"> <span class="tok-comment">/// identifier AST node for it.</span></span>
<span class="line" id="L3270"> identifier,</span>
<span class="line" id="L3271"> <span class="tok-comment">/// lhs is the dot token index, rhs unused, main_token is the identifier.</span></span>
<span class="line" id="L3272"> enum_literal,</span>
<span class="line" id="L3273"> <span class="tok-comment">/// main_token is the string literal token</span></span>
<span class="line" id="L3274"> <span class="tok-comment">/// Both lhs and rhs unused.</span></span>
<span class="line" id="L3275"> string_literal,</span>
<span class="line" id="L3276"> <span class="tok-comment">/// main_token is the first token index (redundant with lhs)</span></span>
<span class="line" id="L3277"> <span class="tok-comment">/// lhs is the first token index; rhs is the last token index.</span></span>
<span class="line" id="L3278"> <span class="tok-comment">/// Could be a series of multiline_string_literal_line tokens, or a single</span></span>
<span class="line" id="L3279"> <span class="tok-comment">/// string_literal token.</span></span>
<span class="line" id="L3280"> multiline_string_literal,</span>
<span class="line" id="L3281"> <span class="tok-comment">/// `(lhs)`. main_token is the `(`; rhs is the token index of the `)`.</span></span>
<span class="line" id="L3282"> grouped_expression,</span>
<span class="line" id="L3283"> <span class="tok-comment">/// `@a(lhs, rhs)`. lhs and rhs may be omitted.</span></span>
<span class="line" id="L3284"> <span class="tok-comment">/// main_token is the builtin token.</span></span>
<span class="line" id="L3285"> builtin_call_two,</span>
<span class="line" id="L3286"> <span class="tok-comment">/// Same as builtin_call_two but there is known to be a trailing comma before the rparen.</span></span>
<span class="line" id="L3287"> builtin_call_two_comma,</span>
<span class="line" id="L3288"> <span class="tok-comment">/// `@a(b, c)`. `sub_list[lhs..rhs]`.</span></span>
<span class="line" id="L3289"> <span class="tok-comment">/// main_token is the builtin token.</span></span>
<span class="line" id="L3290"> builtin_call,</span>
<span class="line" id="L3291"> <span class="tok-comment">/// Same as builtin_call but there is known to be a trailing comma before the rparen.</span></span>
<span class="line" id="L3292"> builtin_call_comma,</span>
<span class="line" id="L3293"> <span class="tok-comment">/// `error{a, b}`.</span></span>
<span class="line" id="L3294"> <span class="tok-comment">/// rhs is the rbrace, lhs is unused.</span></span>
<span class="line" id="L3295"> error_set_decl,</span>
<span class="line" id="L3296"> <span class="tok-comment">/// `struct {}`, `union {}`, `opaque {}`, `enum {}`. `extra_data[lhs..rhs]`.</span></span>
<span class="line" id="L3297"> <span class="tok-comment">/// main_token is `struct`, `union`, `opaque`, `enum` keyword.</span></span>
<span class="line" id="L3298"> container_decl,</span>
<span class="line" id="L3299"> <span class="tok-comment">/// Same as ContainerDecl but there is known to be a trailing comma</span></span>
<span class="line" id="L3300"> <span class="tok-comment">/// or semicolon before the rbrace.</span></span>
<span class="line" id="L3301"> container_decl_trailing,</span>
<span class="line" id="L3302"> <span class="tok-comment">/// `struct {lhs, rhs}`, `union {lhs, rhs}`, `opaque {lhs, rhs}`, `enum {lhs, rhs}`.</span></span>
<span class="line" id="L3303"> <span class="tok-comment">/// lhs or rhs can be omitted.</span></span>
<span class="line" id="L3304"> <span class="tok-comment">/// main_token is `struct`, `union`, `opaque`, `enum` keyword.</span></span>
<span class="line" id="L3305"> container_decl_two,</span>
<span class="line" id="L3306"> <span class="tok-comment">/// Same as ContainerDeclTwo except there is known to be a trailing comma</span></span>
<span class="line" id="L3307"> <span class="tok-comment">/// or semicolon before the rbrace.</span></span>
<span class="line" id="L3308"> container_decl_two_trailing,</span>
<span class="line" id="L3309"> <span class="tok-comment">/// `struct(lhs)` / `union(lhs)` / `enum(lhs)`. `SubRange[rhs]`.</span></span>
<span class="line" id="L3310"> container_decl_arg,</span>
<span class="line" id="L3311"> <span class="tok-comment">/// Same as container_decl_arg but there is known to be a trailing</span></span>
<span class="line" id="L3312"> <span class="tok-comment">/// comma or semicolon before the rbrace.</span></span>
<span class="line" id="L3313"> container_decl_arg_trailing,</span>
<span class="line" id="L3314"> <span class="tok-comment">/// `union(enum) {}`. `sub_list[lhs..rhs]`.</span></span>
<span class="line" id="L3315"> <span class="tok-comment">/// Note that tagged unions with explicitly provided enums are represented</span></span>
<span class="line" id="L3316"> <span class="tok-comment">/// by `container_decl_arg`.</span></span>
<span class="line" id="L3317"> tagged_union,</span>
<span class="line" id="L3318"> <span class="tok-comment">/// Same as tagged_union but there is known to be a trailing comma</span></span>
<span class="line" id="L3319"> <span class="tok-comment">/// or semicolon before the rbrace.</span></span>
<span class="line" id="L3320"> tagged_union_trailing,</span>
<span class="line" id="L3321"> <span class="tok-comment">/// `union(enum) {lhs, rhs}`. lhs or rhs may be omitted.</span></span>
<span class="line" id="L3322"> <span class="tok-comment">/// Note that tagged unions with explicitly provided enums are represented</span></span>
<span class="line" id="L3323"> <span class="tok-comment">/// by `container_decl_arg`.</span></span>
<span class="line" id="L3324"> tagged_union_two,</span>
<span class="line" id="L3325"> <span class="tok-comment">/// Same as tagged_union_two but there is known to be a trailing comma</span></span>
<span class="line" id="L3326"> <span class="tok-comment">/// or semicolon before the rbrace.</span></span>
<span class="line" id="L3327"> tagged_union_two_trailing,</span>
<span class="line" id="L3328"> <span class="tok-comment">/// `union(enum(lhs)) {}`. `SubRange[rhs]`.</span></span>
<span class="line" id="L3329"> tagged_union_enum_tag,</span>
<span class="line" id="L3330"> <span class="tok-comment">/// Same as tagged_union_enum_tag but there is known to be a trailing comma</span></span>
<span class="line" id="L3331"> <span class="tok-comment">/// or semicolon before the rbrace.</span></span>
<span class="line" id="L3332"> tagged_union_enum_tag_trailing,</span>
<span class="line" id="L3333"> <span class="tok-comment">/// `a: lhs = rhs,`. lhs and rhs can be omitted.</span></span>
<span class="line" id="L3334"> <span class="tok-comment">/// main_token is the field name identifier.</span></span>
<span class="line" id="L3335"> <span class="tok-comment">/// lastToken() does not include the possible trailing comma.</span></span>
<span class="line" id="L3336"> container_field_init,</span>
<span class="line" id="L3337"> <span class="tok-comment">/// `a: lhs align(rhs),`. rhs can be omitted.</span></span>
<span class="line" id="L3338"> <span class="tok-comment">/// main_token is the field name identifier.</span></span>
<span class="line" id="L3339"> <span class="tok-comment">/// lastToken() does not include the possible trailing comma.</span></span>
<span class="line" id="L3340"> container_field_align,</span>
<span class="line" id="L3341"> <span class="tok-comment">/// `a: lhs align(c) = d,`. `container_field_list[rhs]`.</span></span>
<span class="line" id="L3342"> <span class="tok-comment">/// main_token is the field name identifier.</span></span>
<span class="line" id="L3343"> <span class="tok-comment">/// lastToken() does not include the possible trailing comma.</span></span>
<span class="line" id="L3344"> container_field,</span>
<span class="line" id="L3345"> <span class="tok-comment">/// `comptime lhs`. rhs unused.</span></span>
<span class="line" id="L3346"> @"comptime",</span>
<span class="line" id="L3347"> <span class="tok-comment">/// `nosuspend lhs`. rhs unused.</span></span>
<span class="line" id="L3348"> @"nosuspend",</span>
<span class="line" id="L3349"> <span class="tok-comment">/// `{lhs rhs}`. rhs or lhs can be omitted.</span></span>
<span class="line" id="L3350"> <span class="tok-comment">/// main_token points at the lbrace.</span></span>
<span class="line" id="L3351"> block_two,</span>
<span class="line" id="L3352"> <span class="tok-comment">/// Same as block_two but there is known to be a semicolon before the rbrace.</span></span>
<span class="line" id="L3353"> block_two_semicolon,</span>
<span class="line" id="L3354"> <span class="tok-comment">/// `{}`. `sub_list[lhs..rhs]`.</span></span>
<span class="line" id="L3355"> <span class="tok-comment">/// main_token points at the lbrace.</span></span>
<span class="line" id="L3356"> block,</span>
<span class="line" id="L3357"> <span class="tok-comment">/// Same as block but there is known to be a semicolon before the rbrace.</span></span>
<span class="line" id="L3358"> block_semicolon,</span>
<span class="line" id="L3359"> <span class="tok-comment">/// `asm(lhs)`. rhs is the token index of the rparen.</span></span>
<span class="line" id="L3360"> asm_simple,</span>
<span class="line" id="L3361"> <span class="tok-comment">/// `asm(lhs, a)`. `Asm[rhs]`.</span></span>
<span class="line" id="L3362"> @"asm",</span>
<span class="line" id="L3363"> <span class="tok-comment">/// `[a] "b" (c)`. lhs is 0, rhs is token index of the rparen.</span></span>
<span class="line" id="L3364"> <span class="tok-comment">/// `[a] "b" (-> lhs)`. rhs is token index of the rparen.</span></span>
<span class="line" id="L3365"> <span class="tok-comment">/// main_token is `a`.</span></span>
<span class="line" id="L3366"> asm_output,</span>
<span class="line" id="L3367"> <span class="tok-comment">/// `[a] "b" (lhs)`. rhs is token index of the rparen.</span></span>
<span class="line" id="L3368"> <span class="tok-comment">/// main_token is `a`.</span></span>
<span class="line" id="L3369"> asm_input,</span>
<span class="line" id="L3370"> <span class="tok-comment">/// `error.a`. lhs is token index of `.`. rhs is token index of `a`.</span></span>
<span class="line" id="L3371"> error_value,</span>
<span class="line" id="L3372"> <span class="tok-comment">/// `lhs!rhs`. main_token is the `!`.</span></span>
<span class="line" id="L3373"> error_union,</span>
<span class="line" id="L3374"></span>
<span class="line" id="L3375"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isContainerField</span>(tag: Tag) <span class="tok-type">bool</span> {</span>
<span class="line" id="L3376"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tag) {</span>
<span class="line" id="L3377"> .container_field_init,</span>
<span class="line" id="L3378"> .container_field_align,</span>
<span class="line" id="L3379"> .container_field,</span>
<span class="line" id="L3380"> => <span class="tok-null">true</span>,</span>
<span class="line" id="L3381"></span>
<span class="line" id="L3382"> <span class="tok-kw">else</span> => <span class="tok-null">false</span>,</span>
<span class="line" id="L3383"> };</span>
<span class="line" id="L3384"> }</span>
<span class="line" id="L3385"> };</span>
<span class="line" id="L3386"></span>
<span class="line" id="L3387"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Data = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3388"> lhs: Index,</span>
<span class="line" id="L3389"> rhs: Index,</span>
<span class="line" id="L3390"> };</span>
<span class="line" id="L3391"></span>
<span class="line" id="L3392"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> LocalVarDecl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3393"> type_node: Index,</span>
<span class="line" id="L3394"> align_node: Index,</span>
<span class="line" id="L3395"> };</span>
<span class="line" id="L3396"></span>
<span class="line" id="L3397"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ArrayTypeSentinel = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3398"> elem_type: Index,</span>
<span class="line" id="L3399"> sentinel: Index,</span>
<span class="line" id="L3400"> };</span>
<span class="line" id="L3401"></span>
<span class="line" id="L3402"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> PtrType = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3403"> sentinel: Index,</span>
<span class="line" id="L3404"> align_node: Index,</span>
<span class="line" id="L3405"> addrspace_node: Index,</span>
<span class="line" id="L3406"> };</span>
<span class="line" id="L3407"></span>
<span class="line" id="L3408"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> PtrTypeBitRange = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3409"> sentinel: Index,</span>
<span class="line" id="L3410"> align_node: Index,</span>
<span class="line" id="L3411"> addrspace_node: Index,</span>
<span class="line" id="L3412"> bit_range_start: Index,</span>
<span class="line" id="L3413"> bit_range_end: Index,</span>
<span class="line" id="L3414"> };</span>
<span class="line" id="L3415"></span>
<span class="line" id="L3416"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> SubRange = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3417"> <span class="tok-comment">/// Index into sub_list.</span></span>
<span class="line" id="L3418"> start: Index,</span>
<span class="line" id="L3419"> <span class="tok-comment">/// Index into sub_list.</span></span>
<span class="line" id="L3420"> end: Index,</span>
<span class="line" id="L3421"> };</span>
<span class="line" id="L3422"></span>
<span class="line" id="L3423"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> If = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3424"> then_expr: Index,</span>
<span class="line" id="L3425"> else_expr: Index,</span>
<span class="line" id="L3426"> };</span>
<span class="line" id="L3427"></span>
<span class="line" id="L3428"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ContainerField = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3429"> value_expr: Index,</span>
<span class="line" id="L3430"> align_expr: Index,</span>
<span class="line" id="L3431"> };</span>
<span class="line" id="L3432"></span>
<span class="line" id="L3433"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> GlobalVarDecl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3434"> <span class="tok-comment">/// Populated if there is an explicit type ascription.</span></span>
<span class="line" id="L3435"> type_node: Index,</span>
<span class="line" id="L3436"> <span class="tok-comment">/// Populated if align(A) is present.</span></span>
<span class="line" id="L3437"> align_node: Index,</span>
<span class="line" id="L3438"> <span class="tok-comment">/// Populated if addrspace(A) is present.</span></span>
<span class="line" id="L3439"> addrspace_node: Index,</span>
<span class="line" id="L3440"> <span class="tok-comment">/// Populated if linksection(A) is present.</span></span>
<span class="line" id="L3441"> section_node: Index,</span>
<span class="line" id="L3442"> };</span>
<span class="line" id="L3443"></span>
<span class="line" id="L3444"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Slice = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3445"> start: Index,</span>
<span class="line" id="L3446"> end: Index,</span>
<span class="line" id="L3447"> };</span>
<span class="line" id="L3448"></span>
<span class="line" id="L3449"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> SliceSentinel = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3450"> start: Index,</span>
<span class="line" id="L3451"> <span class="tok-comment">/// May be 0 if the slice is "open"</span></span>
<span class="line" id="L3452"> end: Index,</span>
<span class="line" id="L3453"> sentinel: Index,</span>
<span class="line" id="L3454"> };</span>
<span class="line" id="L3455"></span>
<span class="line" id="L3456"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> While = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3457"> cont_expr: Index,</span>
<span class="line" id="L3458"> then_expr: Index,</span>
<span class="line" id="L3459"> else_expr: Index,</span>
<span class="line" id="L3460"> };</span>
<span class="line" id="L3461"></span>
<span class="line" id="L3462"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> WhileCont = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3463"> cont_expr: Index,</span>
<span class="line" id="L3464"> then_expr: Index,</span>
<span class="line" id="L3465"> };</span>
<span class="line" id="L3466"></span>
<span class="line" id="L3467"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> For = <span class="tok-kw">packed</span> <span class="tok-kw">struct</span>(<span class="tok-type">u32</span>) {</span>
<span class="line" id="L3468"> inputs: <span class="tok-type">u31</span>,</span>
<span class="line" id="L3469"> has_else: <span class="tok-type">bool</span>,</span>
<span class="line" id="L3470"> };</span>
<span class="line" id="L3471"></span>
<span class="line" id="L3472"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> FnProtoOne = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3473"> <span class="tok-comment">/// Populated if there is exactly 1 parameter. Otherwise there are 0 parameters.</span></span>
<span class="line" id="L3474"> param: Index,</span>
<span class="line" id="L3475"> <span class="tok-comment">/// Populated if align(A) is present.</span></span>
<span class="line" id="L3476"> align_expr: Index,</span>
<span class="line" id="L3477"> <span class="tok-comment">/// Populated if addrspace(A) is present.</span></span>
<span class="line" id="L3478"> addrspace_expr: Index,</span>
<span class="line" id="L3479"> <span class="tok-comment">/// Populated if linksection(A) is present.</span></span>
<span class="line" id="L3480"> section_expr: Index,</span>
<span class="line" id="L3481"> <span class="tok-comment">/// Populated if callconv(A) is present.</span></span>
<span class="line" id="L3482"> callconv_expr: Index,</span>
<span class="line" id="L3483"> };</span>
<span class="line" id="L3484"></span>
<span class="line" id="L3485"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> FnProto = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3486"> params_start: Index,</span>
<span class="line" id="L3487"> params_end: Index,</span>
<span class="line" id="L3488"> <span class="tok-comment">/// Populated if align(A) is present.</span></span>
<span class="line" id="L3489"> align_expr: Index,</span>
<span class="line" id="L3490"> <span class="tok-comment">/// Populated if addrspace(A) is present.</span></span>
<span class="line" id="L3491"> addrspace_expr: Index,</span>
<span class="line" id="L3492"> <span class="tok-comment">/// Populated if linksection(A) is present.</span></span>
<span class="line" id="L3493"> section_expr: Index,</span>
<span class="line" id="L3494"> <span class="tok-comment">/// Populated if callconv(A) is present.</span></span>
<span class="line" id="L3495"> callconv_expr: Index,</span>
<span class="line" id="L3496"> };</span>
<span class="line" id="L3497"></span>
<span class="line" id="L3498"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Asm = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3499"> items_start: Index,</span>
<span class="line" id="L3500"> items_end: Index,</span>
<span class="line" id="L3501"> <span class="tok-comment">/// Needed to make lastToken() work.</span></span>
<span class="line" id="L3502"> rparen: TokenIndex,</span>
<span class="line" id="L3503"> };</span>
<span class="line" id="L3504">};</span>
<span class="line" id="L3505"></span>
<span class="line" id="L3506"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L3507"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L3508"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L3509"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L3510"><span class="tok-kw">const</span> Token = std.zig.Token;</span>
<span class="line" id="L3511"><span class="tok-kw">const</span> Ast = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L3512"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L3513"><span class="tok-kw">const</span> Parse = <span class="tok-builtin">@import</span>(<span class="tok-str">"Parse.zig"</span>);</span>
<span class="line" id="L3514"></span>
<span class="line" id="L3515"><span class="tok-kw">test</span> {</span>
<span class="line" id="L3516"> testing.refAllDecls(<span class="tok-builtin">@This</span>());</span>
<span class="line" id="L3517">}</span>
<span class="line" id="L3518"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> utf8Decode = std.unicode.utf8Decode;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> utf8Encode = std.unicode.utf8Encode;</span>
<span class="line" id="L5"></span>
<span class="line" id="L6"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ParseError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L7"> OutOfMemory,</span>
<span class="line" id="L8"> InvalidLiteral,</span>
<span class="line" id="L9">};</span>
<span class="line" id="L10"></span>
<span class="line" id="L11"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ParsedCharLiteral = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L12"> success: <span class="tok-type">u21</span>,</span>
<span class="line" id="L13"> failure: Error,</span>
<span class="line" id="L14">};</span>
<span class="line" id="L15"></span>
<span class="line" id="L16"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Result = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L17"> success,</span>
<span class="line" id="L18"> failure: Error,</span>
<span class="line" id="L19">};</span>
<span class="line" id="L20"></span>
<span class="line" id="L21"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L22"> <span class="tok-comment">/// The character after backslash is missing or not recognized.</span></span>
<span class="line" id="L23"> invalid_escape_character: <span class="tok-type">usize</span>,</span>
<span class="line" id="L24"> <span class="tok-comment">/// Expected hex digit at this index.</span></span>
<span class="line" id="L25"> expected_hex_digit: <span class="tok-type">usize</span>,</span>
<span class="line" id="L26"> <span class="tok-comment">/// Unicode escape sequence had no digits with rbrace at this index.</span></span>
<span class="line" id="L27"> empty_unicode_escape_sequence: <span class="tok-type">usize</span>,</span>
<span class="line" id="L28"> <span class="tok-comment">/// Expected hex digit or '}' at this index.</span></span>
<span class="line" id="L29"> expected_hex_digit_or_rbrace: <span class="tok-type">usize</span>,</span>
<span class="line" id="L30"> <span class="tok-comment">/// Invalid unicode codepoint at this index.</span></span>
<span class="line" id="L31"> invalid_unicode_codepoint: <span class="tok-type">usize</span>,</span>
<span class="line" id="L32"> <span class="tok-comment">/// Expected '{' at this index.</span></span>
<span class="line" id="L33"> expected_lbrace: <span class="tok-type">usize</span>,</span>
<span class="line" id="L34"> <span class="tok-comment">/// Expected '}' at this index.</span></span>
<span class="line" id="L35"> expected_rbrace: <span class="tok-type">usize</span>,</span>
<span class="line" id="L36"> <span class="tok-comment">/// Expected '\'' at this index.</span></span>
<span class="line" id="L37"> expected_single_quote: <span class="tok-type">usize</span>,</span>
<span class="line" id="L38"> <span class="tok-comment">/// The character at this index cannot be represented without an escape sequence.</span></span>
<span class="line" id="L39"> invalid_character: <span class="tok-type">usize</span>,</span>
<span class="line" id="L40">};</span>
<span class="line" id="L41"></span>
<span class="line" id="L42"><span class="tok-comment">/// Only validates escape sequence characters.</span></span>
<span class="line" id="L43"><span class="tok-comment">/// Slice must be valid utf8 starting and ending with "'" and exactly one codepoint in between.</span></span>
<span class="line" id="L44"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parseCharLiteral</span>(slice: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) ParsedCharLiteral {</span>
<span class="line" id="L45"> assert(slice.len >= <span class="tok-number">3</span> <span class="tok-kw">and</span> slice[<span class="tok-number">0</span>] == <span class="tok-str">'\''</span> <span class="tok-kw">and</span> slice[slice.len - <span class="tok-number">1</span>] == <span class="tok-str">'\''</span>);</span>
<span class="line" id="L46"></span>
<span class="line" id="L47"> <span class="tok-kw">switch</span> (slice[<span class="tok-number">1</span>]) {</span>
<span class="line" id="L48"> <span class="tok-str">'\\'</span> => {</span>
<span class="line" id="L49"> <span class="tok-kw">var</span> offset: <span class="tok-type">usize</span> = <span class="tok-number">1</span>;</span>
<span class="line" id="L50"> <span class="tok-kw">const</span> result = parseEscapeSequence(slice, &offset);</span>
<span class="line" id="L51"> <span class="tok-kw">if</span> (result == .success <span class="tok-kw">and</span> (offset + <span class="tok-number">1</span> != slice.len <span class="tok-kw">or</span> slice[offset] != <span class="tok-str">'\''</span>))</span>
<span class="line" id="L52"> <span class="tok-kw">return</span> .{ .failure = .{ .expected_single_quote = offset } };</span>
<span class="line" id="L53"></span>
<span class="line" id="L54"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L55"> },</span>
<span class="line" id="L56"> <span class="tok-number">0</span> => <span class="tok-kw">return</span> .{ .failure = .{ .invalid_character = <span class="tok-number">1</span> } },</span>
<span class="line" id="L57"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L58"> <span class="tok-kw">const</span> codepoint = utf8Decode(slice[<span class="tok-number">1</span> .. slice.len - <span class="tok-number">1</span>]) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L59"> <span class="tok-kw">return</span> .{ .success = codepoint };</span>
<span class="line" id="L60"> },</span>
<span class="line" id="L61"> }</span>
<span class="line" id="L62">}</span>
<span class="line" id="L63"></span>
<span class="line" id="L64"><span class="tok-comment">/// Parse an escape sequence from `slice[offset..]`. If parsing is successful,</span></span>
<span class="line" id="L65"><span class="tok-comment">/// offset is updated to reflect the characters consumed.</span></span>
<span class="line" id="L66"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parseEscapeSequence</span>(slice: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, offset: *<span class="tok-type">usize</span>) ParsedCharLiteral {</span>
<span class="line" id="L67"> assert(slice.len > offset.*);</span>
<span class="line" id="L68"> assert(slice[offset.*] == <span class="tok-str">'\\'</span>);</span>
<span class="line" id="L69"></span>
<span class="line" id="L70"> <span class="tok-kw">if</span> (slice.len == offset.* + <span class="tok-number">1</span>)</span>
<span class="line" id="L71"> <span class="tok-kw">return</span> .{ .failure = .{ .invalid_escape_character = offset.* + <span class="tok-number">1</span> } };</span>
<span class="line" id="L72"></span>
<span class="line" id="L73"> offset.* += <span class="tok-number">2</span>;</span>
<span class="line" id="L74"> <span class="tok-kw">switch</span> (slice[offset.* - <span class="tok-number">1</span>]) {</span>
<span class="line" id="L75"> <span class="tok-str">'n'</span> => <span class="tok-kw">return</span> .{ .success = <span class="tok-str">'\n'</span> },</span>
<span class="line" id="L76"> <span class="tok-str">'r'</span> => <span class="tok-kw">return</span> .{ .success = <span class="tok-str">'\r'</span> },</span>
<span class="line" id="L77"> <span class="tok-str">'\\'</span> => <span class="tok-kw">return</span> .{ .success = <span class="tok-str">'\\'</span> },</span>
<span class="line" id="L78"> <span class="tok-str">'t'</span> => <span class="tok-kw">return</span> .{ .success = <span class="tok-str">'\t'</span> },</span>
<span class="line" id="L79"> <span class="tok-str">'\''</span> => <span class="tok-kw">return</span> .{ .success = <span class="tok-str">'\''</span> },</span>
<span class="line" id="L80"> <span class="tok-str">'"'</span> => <span class="tok-kw">return</span> .{ .success = <span class="tok-str">'"'</span> },</span>
<span class="line" id="L81"> <span class="tok-str">'x'</span> => {</span>
<span class="line" id="L82"> <span class="tok-kw">var</span> value: <span class="tok-type">u8</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L83"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = offset.*;</span>
<span class="line" id="L84"> <span class="tok-kw">while</span> (i < offset.* + <span class="tok-number">2</span>) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L85"> <span class="tok-kw">if</span> (i == slice.len) <span class="tok-kw">return</span> .{ .failure = .{ .expected_hex_digit = i } };</span>
<span class="line" id="L86"></span>
<span class="line" id="L87"> <span class="tok-kw">const</span> c = slice[i];</span>
<span class="line" id="L88"> <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L89"> <span class="tok-str">'0'</span>...<span class="tok-str">'9'</span> => {</span>
<span class="line" id="L90"> value *= <span class="tok-number">16</span>;</span>
<span class="line" id="L91"> value += c - <span class="tok-str">'0'</span>;</span>
<span class="line" id="L92"> },</span>
<span class="line" id="L93"> <span class="tok-str">'a'</span>...<span class="tok-str">'f'</span> => {</span>
<span class="line" id="L94"> value *= <span class="tok-number">16</span>;</span>
<span class="line" id="L95"> value += c - <span class="tok-str">'a'</span> + <span class="tok-number">10</span>;</span>
<span class="line" id="L96"> },</span>
<span class="line" id="L97"> <span class="tok-str">'A'</span>...<span class="tok-str">'F'</span> => {</span>
<span class="line" id="L98"> value *= <span class="tok-number">16</span>;</span>
<span class="line" id="L99"> value += c - <span class="tok-str">'A'</span> + <span class="tok-number">10</span>;</span>
<span class="line" id="L100"> },</span>
<span class="line" id="L101"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L102"> <span class="tok-kw">return</span> .{ .failure = .{ .expected_hex_digit = i } };</span>
<span class="line" id="L103"> },</span>
<span class="line" id="L104"> }</span>
<span class="line" id="L105"> }</span>
<span class="line" id="L106"> offset.* = i;</span>
<span class="line" id="L107"> <span class="tok-kw">return</span> .{ .success = value };</span>
<span class="line" id="L108"> },</span>
<span class="line" id="L109"> <span class="tok-str">'u'</span> => {</span>
<span class="line" id="L110"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = offset.*;</span>
<span class="line" id="L111"> <span class="tok-kw">if</span> (i >= slice.len <span class="tok-kw">or</span> slice[i] != <span class="tok-str">'{'</span>) <span class="tok-kw">return</span> .{ .failure = .{ .expected_lbrace = i } };</span>
<span class="line" id="L112"> i += <span class="tok-number">1</span>;</span>
<span class="line" id="L113"> <span class="tok-kw">if</span> (i >= slice.len) <span class="tok-kw">return</span> .{ .failure = .{ .expected_hex_digit_or_rbrace = i } };</span>
<span class="line" id="L114"> <span class="tok-kw">if</span> (slice[i] == <span class="tok-str">'}'</span>) <span class="tok-kw">return</span> .{ .failure = .{ .empty_unicode_escape_sequence = i } };</span>
<span class="line" id="L115"></span>
<span class="line" id="L116"> <span class="tok-kw">var</span> value: <span class="tok-type">u32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L117"> <span class="tok-kw">while</span> (i < slice.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L118"> <span class="tok-kw">const</span> c = slice[i];</span>
<span class="line" id="L119"> <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L120"> <span class="tok-str">'0'</span>...<span class="tok-str">'9'</span> => {</span>
<span class="line" id="L121"> value *= <span class="tok-number">16</span>;</span>
<span class="line" id="L122"> value += c - <span class="tok-str">'0'</span>;</span>
<span class="line" id="L123"> },</span>
<span class="line" id="L124"> <span class="tok-str">'a'</span>...<span class="tok-str">'f'</span> => {</span>
<span class="line" id="L125"> value *= <span class="tok-number">16</span>;</span>
<span class="line" id="L126"> value += c - <span class="tok-str">'a'</span> + <span class="tok-number">10</span>;</span>
<span class="line" id="L127"> },</span>
<span class="line" id="L128"> <span class="tok-str">'A'</span>...<span class="tok-str">'F'</span> => {</span>
<span class="line" id="L129"> value *= <span class="tok-number">16</span>;</span>
<span class="line" id="L130"> value += c - <span class="tok-str">'A'</span> + <span class="tok-number">10</span>;</span>
<span class="line" id="L131"> },</span>
<span class="line" id="L132"> <span class="tok-str">'}'</span> => {</span>
<span class="line" id="L133"> i += <span class="tok-number">1</span>;</span>
<span class="line" id="L134"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L135"> },</span>
<span class="line" id="L136"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> .{ .failure = .{ .expected_hex_digit_or_rbrace = i } },</span>
<span class="line" id="L137"> }</span>
<span class="line" id="L138"> <span class="tok-kw">if</span> (value > <span class="tok-number">0x10ffff</span>) {</span>
<span class="line" id="L139"> <span class="tok-kw">return</span> .{ .failure = .{ .invalid_unicode_codepoint = i } };</span>
<span class="line" id="L140"> }</span>
<span class="line" id="L141"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L142"> <span class="tok-kw">return</span> .{ .failure = .{ .expected_rbrace = i } };</span>
<span class="line" id="L143"> }</span>
<span class="line" id="L144"> offset.* = i;</span>
<span class="line" id="L145"> <span class="tok-kw">return</span> .{ .success = <span class="tok-builtin">@as</span>(<span class="tok-type">u21</span>, <span class="tok-builtin">@intCast</span>(value)) };</span>
<span class="line" id="L146"> },</span>
<span class="line" id="L147"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> .{ .failure = .{ .invalid_escape_character = offset.* - <span class="tok-number">1</span> } },</span>
<span class="line" id="L148"> }</span>
<span class="line" id="L149">}</span>
<span class="line" id="L150"></span>
<span class="line" id="L151"><span class="tok-kw">test</span> <span class="tok-str">"parseCharLiteral"</span> {</span>
<span class="line" id="L152"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L153"> ParsedCharLiteral{ .success = <span class="tok-str">'a'</span> },</span>
<span class="line" id="L154"> parseCharLiteral(<span class="tok-str">"'a'"</span>),</span>
<span class="line" id="L155"> );</span>
<span class="line" id="L156"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L157"> ParsedCharLiteral{ .success = <span class="tok-str">'ä'</span> },</span>
<span class="line" id="L158"> parseCharLiteral(<span class="tok-str">"'ä'"</span>),</span>
<span class="line" id="L159"> );</span>
<span class="line" id="L160"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L161"> ParsedCharLiteral{ .success = <span class="tok-number">0</span> },</span>
<span class="line" id="L162"> parseCharLiteral(<span class="tok-str">"'\\x00'"</span>),</span>
<span class="line" id="L163"> );</span>
<span class="line" id="L164"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L165"> ParsedCharLiteral{ .success = <span class="tok-number">0x4f</span> },</span>
<span class="line" id="L166"> parseCharLiteral(<span class="tok-str">"'\\x4f'"</span>),</span>
<span class="line" id="L167"> );</span>
<span class="line" id="L168"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L169"> ParsedCharLiteral{ .success = <span class="tok-number">0x4f</span> },</span>
<span class="line" id="L170"> parseCharLiteral(<span class="tok-str">"'\\x4F'"</span>),</span>
<span class="line" id="L171"> );</span>
<span class="line" id="L172"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L173"> ParsedCharLiteral{ .success = <span class="tok-number">0x3041</span> },</span>
<span class="line" id="L174"> parseCharLiteral(<span class="tok-str">"'ぁ'"</span>),</span>
<span class="line" id="L175"> );</span>
<span class="line" id="L176"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L177"> ParsedCharLiteral{ .success = <span class="tok-number">0</span> },</span>
<span class="line" id="L178"> parseCharLiteral(<span class="tok-str">"'\\u{0}'"</span>),</span>
<span class="line" id="L179"> );</span>
<span class="line" id="L180"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L181"> ParsedCharLiteral{ .success = <span class="tok-number">0x3041</span> },</span>
<span class="line" id="L182"> parseCharLiteral(<span class="tok-str">"'\\u{3041}'"</span>),</span>
<span class="line" id="L183"> );</span>
<span class="line" id="L184"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L185"> ParsedCharLiteral{ .success = <span class="tok-number">0x7f</span> },</span>
<span class="line" id="L186"> parseCharLiteral(<span class="tok-str">"'\\u{7f}'"</span>),</span>
<span class="line" id="L187"> );</span>
<span class="line" id="L188"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L189"> ParsedCharLiteral{ .success = <span class="tok-number">0x7fff</span> },</span>
<span class="line" id="L190"> parseCharLiteral(<span class="tok-str">"'\\u{7FFF}'"</span>),</span>
<span class="line" id="L191"> );</span>
<span class="line" id="L192"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L193"> ParsedCharLiteral{ .failure = .{ .expected_hex_digit = <span class="tok-number">4</span> } },</span>
<span class="line" id="L194"> parseCharLiteral(<span class="tok-str">"'\\x0'"</span>),</span>
<span class="line" id="L195"> );</span>
<span class="line" id="L196"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L197"> ParsedCharLiteral{ .failure = .{ .expected_single_quote = <span class="tok-number">5</span> } },</span>
<span class="line" id="L198"> parseCharLiteral(<span class="tok-str">"'\\x000'"</span>),</span>
<span class="line" id="L199"> );</span>
<span class="line" id="L200"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L201"> ParsedCharLiteral{ .failure = .{ .invalid_escape_character = <span class="tok-number">2</span> } },</span>
<span class="line" id="L202"> parseCharLiteral(<span class="tok-str">"'\\y'"</span>),</span>
<span class="line" id="L203"> );</span>
<span class="line" id="L204"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L205"> ParsedCharLiteral{ .failure = .{ .expected_lbrace = <span class="tok-number">3</span> } },</span>
<span class="line" id="L206"> parseCharLiteral(<span class="tok-str">"'\\u'"</span>),</span>
<span class="line" id="L207"> );</span>
<span class="line" id="L208"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L209"> ParsedCharLiteral{ .failure = .{ .expected_lbrace = <span class="tok-number">3</span> } },</span>
<span class="line" id="L210"> parseCharLiteral(<span class="tok-str">"'\\uFFFF'"</span>),</span>
<span class="line" id="L211"> );</span>
<span class="line" id="L212"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L213"> ParsedCharLiteral{ .failure = .{ .empty_unicode_escape_sequence = <span class="tok-number">4</span> } },</span>
<span class="line" id="L214"> parseCharLiteral(<span class="tok-str">"'\\u{}'"</span>),</span>
<span class="line" id="L215"> );</span>
<span class="line" id="L216"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L217"> ParsedCharLiteral{ .failure = .{ .invalid_unicode_codepoint = <span class="tok-number">9</span> } },</span>
<span class="line" id="L218"> parseCharLiteral(<span class="tok-str">"'\\u{FFFFFF}'"</span>),</span>
<span class="line" id="L219"> );</span>
<span class="line" id="L220"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L221"> ParsedCharLiteral{ .failure = .{ .expected_hex_digit_or_rbrace = <span class="tok-number">8</span> } },</span>
<span class="line" id="L222"> parseCharLiteral(<span class="tok-str">"'\\u{FFFF'"</span>),</span>
<span class="line" id="L223"> );</span>
<span class="line" id="L224"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L225"> ParsedCharLiteral{ .failure = .{ .expected_single_quote = <span class="tok-number">9</span> } },</span>
<span class="line" id="L226"> parseCharLiteral(<span class="tok-str">"'\\u{FFFF}x'"</span>),</span>
<span class="line" id="L227"> );</span>
<span class="line" id="L228"> <span class="tok-kw">try</span> std.testing.expectEqual(</span>
<span class="line" id="L229"> ParsedCharLiteral{ .failure = .{ .invalid_character = <span class="tok-number">1</span> } },</span>
<span class="line" id="L230"> parseCharLiteral(<span class="tok-str">"'\x00'"</span>),</span>
<span class="line" id="L231"> );</span>
<span class="line" id="L232">}</span>
<span class="line" id="L233"></span>
<span class="line" id="L234"><span class="tok-comment">/// Parses `bytes` as a Zig string literal and writes the result to the std.io.Writer type.</span></span>
<span class="line" id="L235"><span class="tok-comment">/// Asserts `bytes` has '"' at beginning and end.</span></span>
<span class="line" id="L236"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parseWrite</span>(writer: <span class="tok-kw">anytype</span>, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-kw">error</span>{OutOfMemory}!Result {</span>
<span class="line" id="L237"> assert(bytes.len >= <span class="tok-number">2</span> <span class="tok-kw">and</span> bytes[<span class="tok-number">0</span>] == <span class="tok-str">'"'</span> <span class="tok-kw">and</span> bytes[bytes.len - <span class="tok-number">1</span>] == <span class="tok-str">'"'</span>);</span>
<span class="line" id="L238"></span>
<span class="line" id="L239"> <span class="tok-kw">var</span> index: <span class="tok-type">usize</span> = <span class="tok-number">1</span>;</span>
<span class="line" id="L240"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L241"> <span class="tok-kw">const</span> b = bytes[index];</span>
<span class="line" id="L242"></span>
<span class="line" id="L243"> <span class="tok-kw">switch</span> (b) {</span>
<span class="line" id="L244"> <span class="tok-str">'\\'</span> => {</span>
<span class="line" id="L245"> <span class="tok-kw">const</span> escape_char_index = index + <span class="tok-number">1</span>;</span>
<span class="line" id="L246"> <span class="tok-kw">const</span> result = parseEscapeSequence(bytes, &index);</span>
<span class="line" id="L247"> <span class="tok-kw">switch</span> (result) {</span>
<span class="line" id="L248"> .success => |codepoint| {</span>
<span class="line" id="L249"> <span class="tok-kw">if</span> (bytes[escape_char_index] == <span class="tok-str">'u'</span>) {</span>
<span class="line" id="L250"> <span class="tok-kw">var</span> buf: [<span class="tok-number">4</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L251"> <span class="tok-kw">const</span> len = utf8Encode(codepoint, &buf) <span class="tok-kw">catch</span> {</span>
<span class="line" id="L252"> <span class="tok-kw">return</span> Result{ .failure = .{ .invalid_unicode_codepoint = escape_char_index + <span class="tok-number">1</span> } };</span>
<span class="line" id="L253"> };</span>
<span class="line" id="L254"> <span class="tok-kw">try</span> writer.writeAll(buf[<span class="tok-number">0</span>..len]);</span>
<span class="line" id="L255"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L256"> <span class="tok-kw">try</span> writer.writeByte(<span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(codepoint)));</span>
<span class="line" id="L257"> }</span>
<span class="line" id="L258"> },</span>
<span class="line" id="L259"> .failure => |err| <span class="tok-kw">return</span> Result{ .failure = err },</span>
<span class="line" id="L260"> }</span>
<span class="line" id="L261"> },</span>
<span class="line" id="L262"> <span class="tok-str">'\n'</span> => <span class="tok-kw">return</span> Result{ .failure = .{ .invalid_character = index } },</span>
<span class="line" id="L263"> <span class="tok-str">'"'</span> => <span class="tok-kw">return</span> Result.success,</span>
<span class="line" id="L264"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L265"> <span class="tok-kw">try</span> writer.writeByte(b);</span>
<span class="line" id="L266"> index += <span class="tok-number">1</span>;</span>
<span class="line" id="L267"> },</span>
<span class="line" id="L268"> }</span>
<span class="line" id="L269"> }</span>
<span class="line" id="L270">}</span>
<span class="line" id="L271"></span>
<span class="line" id="L272"><span class="tok-comment">/// Higher level API. Does not return extra info about parse errors.</span></span>
<span class="line" id="L273"><span class="tok-comment">/// Caller owns returned memory.</span></span>
<span class="line" id="L274"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parseAlloc</span>(allocator: std.mem.Allocator, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) ParseError![]<span class="tok-type">u8</span> {</span>
<span class="line" id="L275"> <span class="tok-kw">var</span> buf = std.ArrayList(<span class="tok-type">u8</span>).init(allocator);</span>
<span class="line" id="L276"> <span class="tok-kw">defer</span> buf.deinit();</span>
<span class="line" id="L277"></span>
<span class="line" id="L278"> <span class="tok-kw">switch</span> (<span class="tok-kw">try</span> parseWrite(buf.writer(), bytes)) {</span>
<span class="line" id="L279"> .success => <span class="tok-kw">return</span> buf.toOwnedSlice(),</span>
<span class="line" id="L280"> .failure => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidLiteral,</span>
<span class="line" id="L281"> }</span>
<span class="line" id="L282">}</span>
<span class="line" id="L283"></span>
<span class="line" id="L284"><span class="tok-kw">test</span> <span class="tok-str">"parse"</span> {</span>
<span class="line" id="L285"> <span class="tok-kw">const</span> expect = std.testing.expect;</span>
<span class="line" id="L286"> <span class="tok-kw">const</span> expectError = std.testing.expectError;</span>
<span class="line" id="L287"> <span class="tok-kw">const</span> eql = std.mem.eql;</span>
<span class="line" id="L288"></span>
<span class="line" id="L289"> <span class="tok-kw">var</span> fixed_buf_mem: [<span class="tok-number">64</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L290"> <span class="tok-kw">var</span> fixed_buf_alloc = std.heap.FixedBufferAllocator.init(&fixed_buf_mem);</span>
<span class="line" id="L291"> <span class="tok-kw">var</span> alloc = fixed_buf_alloc.allocator();</span>
<span class="line" id="L292"></span>
<span class="line" id="L293"> <span class="tok-kw">try</span> expectError(<span class="tok-kw">error</span>.InvalidLiteral, parseAlloc(alloc, <span class="tok-str">"\"\\x6\""</span>));</span>
<span class="line" id="L294"> <span class="tok-kw">try</span> expect(eql(<span class="tok-type">u8</span>, <span class="tok-str">"foo\nbar"</span>, <span class="tok-kw">try</span> parseAlloc(alloc, <span class="tok-str">"\"foo\\nbar\""</span>)));</span>
<span class="line" id="L295"> <span class="tok-kw">try</span> expect(eql(<span class="tok-type">u8</span>, <span class="tok-str">"\x12foo"</span>, <span class="tok-kw">try</span> parseAlloc(alloc, <span class="tok-str">"\"\\x12foo\""</span>)));</span>
<span class="line" id="L296"> <span class="tok-kw">try</span> expect(eql(<span class="tok-type">u8</span>, <span class="tok-str">"bytes\u{1234}foo"</span>, <span class="tok-kw">try</span> parseAlloc(alloc, <span class="tok-str">"\"bytes\\u{1234}foo\""</span>)));</span>
<span class="line" id="L297"> <span class="tok-kw">try</span> expect(eql(<span class="tok-type">u8</span>, <span class="tok-str">"foo"</span>, <span class="tok-kw">try</span> parseAlloc(alloc, <span class="tok-str">"\"foo\""</span>)));</span>
<span class="line" id="L298"> <span class="tok-kw">try</span> expect(eql(<span class="tok-type">u8</span>, <span class="tok-str">"foo"</span>, <span class="tok-kw">try</span> parseAlloc(alloc, <span class="tok-str">"\"f\x6f\x6f\""</span>)));</span>
<span class="line" id="L299"> <span class="tok-kw">try</span> expect(eql(<span class="tok-type">u8</span>, <span class="tok-str">"f💯"</span>, <span class="tok-kw">try</span> parseAlloc(alloc, <span class="tok-str">"\"f\u{1f4af}\""</span>)));</span>
<span class="line" id="L300">}</span>
<span class="line" id="L301"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/zig/c_builtins.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_bswap16</span>(val: <span class="tok-type">u16</span>) <span class="tok-type">u16</span> {</span>
<span class="line" id="L4"> <span class="tok-kw">return</span> <span class="tok-builtin">@byteSwap</span>(val);</span>
<span class="line" id="L5">}</span>
<span class="line" id="L6"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_bswap32</span>(val: <span class="tok-type">u32</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L7"> <span class="tok-kw">return</span> <span class="tok-builtin">@byteSwap</span>(val);</span>
<span class="line" id="L8">}</span>
<span class="line" id="L9"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_bswap64</span>(val: <span class="tok-type">u64</span>) <span class="tok-type">u64</span> {</span>
<span class="line" id="L10"> <span class="tok-kw">return</span> <span class="tok-builtin">@byteSwap</span>(val);</span>
<span class="line" id="L11">}</span>
<span class="line" id="L12"></span>
<span class="line" id="L13"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_signbit</span>(val: <span class="tok-type">f64</span>) <span class="tok-type">c_int</span> {</span>
<span class="line" id="L14"> <span class="tok-kw">return</span> <span class="tok-builtin">@intFromBool</span>(std.math.signbit(val));</span>
<span class="line" id="L15">}</span>
<span class="line" id="L16"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_signbitf</span>(val: <span class="tok-type">f32</span>) <span class="tok-type">c_int</span> {</span>
<span class="line" id="L17"> <span class="tok-kw">return</span> <span class="tok-builtin">@intFromBool</span>(std.math.signbit(val));</span>
<span class="line" id="L18">}</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_popcount</span>(val: <span class="tok-type">c_uint</span>) <span class="tok-type">c_int</span> {</span>
<span class="line" id="L21"> <span class="tok-comment">// popcount of a c_uint will never exceed the capacity of a c_int</span>
</span>
<span class="line" id="L22"> <span class="tok-builtin">@setRuntimeSafety</span>(<span class="tok-null">false</span>);</span>
<span class="line" id="L23"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">c_int</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">c_uint</span>, <span class="tok-builtin">@popCount</span>(val))));</span>
<span class="line" id="L24">}</span>
<span class="line" id="L25"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_ctz</span>(val: <span class="tok-type">c_uint</span>) <span class="tok-type">c_int</span> {</span>
<span class="line" id="L26"> <span class="tok-comment">// Returns the number of trailing 0-bits in val, starting at the least significant bit position.</span>
</span>
<span class="line" id="L27"> <span class="tok-comment">// In C if `val` is 0, the result is undefined; in zig it's the number of bits in a c_uint</span>
</span>
<span class="line" id="L28"> <span class="tok-builtin">@setRuntimeSafety</span>(<span class="tok-null">false</span>);</span>
<span class="line" id="L29"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">c_int</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">c_uint</span>, <span class="tok-builtin">@ctz</span>(val))));</span>
<span class="line" id="L30">}</span>
<span class="line" id="L31"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_clz</span>(val: <span class="tok-type">c_uint</span>) <span class="tok-type">c_int</span> {</span>
<span class="line" id="L32"> <span class="tok-comment">// Returns the number of leading 0-bits in x, starting at the most significant bit position.</span>
</span>
<span class="line" id="L33"> <span class="tok-comment">// In C if `val` is 0, the result is undefined; in zig it's the number of bits in a c_uint</span>
</span>
<span class="line" id="L34"> <span class="tok-builtin">@setRuntimeSafety</span>(<span class="tok-null">false</span>);</span>
<span class="line" id="L35"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">c_int</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">c_uint</span>, <span class="tok-builtin">@clz</span>(val))));</span>
<span class="line" id="L36">}</span>
<span class="line" id="L37"></span>
<span class="line" id="L38"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_sqrt</span>(val: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L39"> <span class="tok-kw">return</span> <span class="tok-builtin">@sqrt</span>(val);</span>
<span class="line" id="L40">}</span>
<span class="line" id="L41"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_sqrtf</span>(val: <span class="tok-type">f32</span>) <span class="tok-type">f32</span> {</span>
<span class="line" id="L42"> <span class="tok-kw">return</span> <span class="tok-builtin">@sqrt</span>(val);</span>
<span class="line" id="L43">}</span>
<span class="line" id="L44"></span>
<span class="line" id="L45"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_sin</span>(val: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L46"> <span class="tok-kw">return</span> <span class="tok-builtin">@sin</span>(val);</span>
<span class="line" id="L47">}</span>
<span class="line" id="L48"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_sinf</span>(val: <span class="tok-type">f32</span>) <span class="tok-type">f32</span> {</span>
<span class="line" id="L49"> <span class="tok-kw">return</span> <span class="tok-builtin">@sin</span>(val);</span>
<span class="line" id="L50">}</span>
<span class="line" id="L51"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_cos</span>(val: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L52"> <span class="tok-kw">return</span> <span class="tok-builtin">@cos</span>(val);</span>
<span class="line" id="L53">}</span>
<span class="line" id="L54"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_cosf</span>(val: <span class="tok-type">f32</span>) <span class="tok-type">f32</span> {</span>
<span class="line" id="L55"> <span class="tok-kw">return</span> <span class="tok-builtin">@cos</span>(val);</span>
<span class="line" id="L56">}</span>
<span class="line" id="L57"></span>
<span class="line" id="L58"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_exp</span>(val: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L59"> <span class="tok-kw">return</span> <span class="tok-builtin">@exp</span>(val);</span>
<span class="line" id="L60">}</span>
<span class="line" id="L61"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_expf</span>(val: <span class="tok-type">f32</span>) <span class="tok-type">f32</span> {</span>
<span class="line" id="L62"> <span class="tok-kw">return</span> <span class="tok-builtin">@exp</span>(val);</span>
<span class="line" id="L63">}</span>
<span class="line" id="L64"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_exp2</span>(val: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L65"> <span class="tok-kw">return</span> <span class="tok-builtin">@exp2</span>(val);</span>
<span class="line" id="L66">}</span>
<span class="line" id="L67"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_exp2f</span>(val: <span class="tok-type">f32</span>) <span class="tok-type">f32</span> {</span>
<span class="line" id="L68"> <span class="tok-kw">return</span> <span class="tok-builtin">@exp2</span>(val);</span>
<span class="line" id="L69">}</span>
<span class="line" id="L70"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_log</span>(val: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L71"> <span class="tok-kw">return</span> <span class="tok-builtin">@log</span>(val);</span>
<span class="line" id="L72">}</span>
<span class="line" id="L73"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_logf</span>(val: <span class="tok-type">f32</span>) <span class="tok-type">f32</span> {</span>
<span class="line" id="L74"> <span class="tok-kw">return</span> <span class="tok-builtin">@log</span>(val);</span>
<span class="line" id="L75">}</span>
<span class="line" id="L76"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_log2</span>(val: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L77"> <span class="tok-kw">return</span> <span class="tok-builtin">@log2</span>(val);</span>
<span class="line" id="L78">}</span>
<span class="line" id="L79"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_log2f</span>(val: <span class="tok-type">f32</span>) <span class="tok-type">f32</span> {</span>
<span class="line" id="L80"> <span class="tok-kw">return</span> <span class="tok-builtin">@log2</span>(val);</span>
<span class="line" id="L81">}</span>
<span class="line" id="L82"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_log10</span>(val: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L83"> <span class="tok-kw">return</span> <span class="tok-builtin">@log10</span>(val);</span>
<span class="line" id="L84">}</span>
<span class="line" id="L85"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_log10f</span>(val: <span class="tok-type">f32</span>) <span class="tok-type">f32</span> {</span>
<span class="line" id="L86"> <span class="tok-kw">return</span> <span class="tok-builtin">@log10</span>(val);</span>
<span class="line" id="L87">}</span>
<span class="line" id="L88"></span>
<span class="line" id="L89"><span class="tok-comment">// Standard C Library bug: The absolute value of the most negative integer remains negative.</span>
</span>
<span class="line" id="L90"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_abs</span>(val: <span class="tok-type">c_int</span>) <span class="tok-type">c_int</span> {</span>
<span class="line" id="L91"> <span class="tok-kw">return</span> std.math.absInt(val) <span class="tok-kw">catch</span> std.math.minInt(<span class="tok-type">c_int</span>);</span>
<span class="line" id="L92">}</span>
<span class="line" id="L93"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_fabs</span>(val: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L94"> <span class="tok-kw">return</span> <span class="tok-builtin">@fabs</span>(val);</span>
<span class="line" id="L95">}</span>
<span class="line" id="L96"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_fabsf</span>(val: <span class="tok-type">f32</span>) <span class="tok-type">f32</span> {</span>
<span class="line" id="L97"> <span class="tok-kw">return</span> <span class="tok-builtin">@fabs</span>(val);</span>
<span class="line" id="L98">}</span>
<span class="line" id="L99"></span>
<span class="line" id="L100"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_floor</span>(val: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L101"> <span class="tok-kw">return</span> <span class="tok-builtin">@floor</span>(val);</span>
<span class="line" id="L102">}</span>
<span class="line" id="L103"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_floorf</span>(val: <span class="tok-type">f32</span>) <span class="tok-type">f32</span> {</span>
<span class="line" id="L104"> <span class="tok-kw">return</span> <span class="tok-builtin">@floor</span>(val);</span>
<span class="line" id="L105">}</span>
<span class="line" id="L106"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_ceil</span>(val: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L107"> <span class="tok-kw">return</span> <span class="tok-builtin">@ceil</span>(val);</span>
<span class="line" id="L108">}</span>
<span class="line" id="L109"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_ceilf</span>(val: <span class="tok-type">f32</span>) <span class="tok-type">f32</span> {</span>
<span class="line" id="L110"> <span class="tok-kw">return</span> <span class="tok-builtin">@ceil</span>(val);</span>
<span class="line" id="L111">}</span>
<span class="line" id="L112"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_trunc</span>(val: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L113"> <span class="tok-kw">return</span> <span class="tok-builtin">@trunc</span>(val);</span>
<span class="line" id="L114">}</span>
<span class="line" id="L115"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_truncf</span>(val: <span class="tok-type">f32</span>) <span class="tok-type">f32</span> {</span>
<span class="line" id="L116"> <span class="tok-kw">return</span> <span class="tok-builtin">@trunc</span>(val);</span>
<span class="line" id="L117">}</span>
<span class="line" id="L118"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_round</span>(val: <span class="tok-type">f64</span>) <span class="tok-type">f64</span> {</span>
<span class="line" id="L119"> <span class="tok-kw">return</span> <span class="tok-builtin">@round</span>(val);</span>
<span class="line" id="L120">}</span>
<span class="line" id="L121"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_roundf</span>(val: <span class="tok-type">f32</span>) <span class="tok-type">f32</span> {</span>
<span class="line" id="L122"> <span class="tok-kw">return</span> <span class="tok-builtin">@round</span>(val);</span>
<span class="line" id="L123">}</span>
<span class="line" id="L124"></span>
<span class="line" id="L125"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_strlen</span>(s: [*c]<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">usize</span> {</span>
<span class="line" id="L126"> <span class="tok-kw">return</span> std.mem.sliceTo(s, <span class="tok-number">0</span>).len;</span>
<span class="line" id="L127">}</span>
<span class="line" id="L128"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_strcmp</span>(s1: [*c]<span class="tok-kw">const</span> <span class="tok-type">u8</span>, s2: [*c]<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">c_int</span> {</span>
<span class="line" id="L129"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (std.mem.orderZ(<span class="tok-type">u8</span>, s1, s2)) {</span>
<span class="line" id="L130"> .lt => -<span class="tok-number">1</span>,</span>
<span class="line" id="L131"> .eq => <span class="tok-number">0</span>,</span>
<span class="line" id="L132"> .gt => <span class="tok-number">1</span>,</span>
<span class="line" id="L133"> };</span>
<span class="line" id="L134">}</span>
<span class="line" id="L135"></span>
<span class="line" id="L136"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_object_size</span>(ptr: ?*<span class="tok-kw">const</span> <span class="tok-type">anyopaque</span>, ty: <span class="tok-type">c_int</span>) <span class="tok-type">usize</span> {</span>
<span class="line" id="L137"> _ = ptr;</span>
<span class="line" id="L138"> <span class="tok-comment">// clang semantics match gcc's: https://gcc.gnu.org/onlinedocs/gcc/Object-Size-Checking.html</span>
</span>
<span class="line" id="L139"> <span class="tok-comment">// If it is not possible to determine which objects ptr points to at compile time,</span>
</span>
<span class="line" id="L140"> <span class="tok-comment">// __builtin_object_size should return (size_t) -1 for type 0 or 1 and (size_t) 0</span>
</span>
<span class="line" id="L141"> <span class="tok-comment">// for type 2 or 3.</span>
</span>
<span class="line" id="L142"> <span class="tok-kw">if</span> (ty == <span class="tok-number">0</span> <span class="tok-kw">or</span> ty == <span class="tok-number">1</span>) <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@bitCast</span>(-<span class="tok-builtin">@as</span>(<span class="tok-type">isize</span>, <span class="tok-number">1</span>)));</span>
<span class="line" id="L143"> <span class="tok-kw">if</span> (ty == <span class="tok-number">2</span> <span class="tok-kw">or</span> ty == <span class="tok-number">3</span>) <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L144"> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L145">}</span>
<span class="line" id="L146"></span>
<span class="line" id="L147"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin___memset_chk</span>(</span>
<span class="line" id="L148"> dst: ?*<span class="tok-type">anyopaque</span>,</span>
<span class="line" id="L149"> val: <span class="tok-type">c_int</span>,</span>
<span class="line" id="L150"> len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L151"> remaining: <span class="tok-type">usize</span>,</span>
<span class="line" id="L152">) ?*<span class="tok-type">anyopaque</span> {</span>
<span class="line" id="L153"> <span class="tok-kw">if</span> (len > remaining) <span class="tok-builtin">@panic</span>(<span class="tok-str">"std.c.builtins.memset_chk called with len > remaining"</span>);</span>
<span class="line" id="L154"> <span class="tok-kw">return</span> __builtin_memset(dst, val, len);</span>
<span class="line" id="L155">}</span>
<span class="line" id="L156"></span>
<span class="line" id="L157"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_memset</span>(dst: ?*<span class="tok-type">anyopaque</span>, val: <span class="tok-type">c_int</span>, len: <span class="tok-type">usize</span>) ?*<span class="tok-type">anyopaque</span> {</span>
<span class="line" id="L158"> <span class="tok-kw">const</span> dst_cast = <span class="tok-builtin">@as</span>([*c]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(dst));</span>
<span class="line" id="L159"> <span class="tok-builtin">@memset</span>(dst_cast[<span class="tok-number">0</span>..len], <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">i8</span>, <span class="tok-builtin">@truncate</span>(val)))));</span>
<span class="line" id="L160"> <span class="tok-kw">return</span> dst;</span>
<span class="line" id="L161">}</span>
<span class="line" id="L162"></span>
<span class="line" id="L163"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin___memcpy_chk</span>(</span>
<span class="line" id="L164"> <span class="tok-kw">noalias</span> dst: ?*<span class="tok-type">anyopaque</span>,</span>
<span class="line" id="L165"> <span class="tok-kw">noalias</span> src: ?*<span class="tok-kw">const</span> <span class="tok-type">anyopaque</span>,</span>
<span class="line" id="L166"> len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L167"> remaining: <span class="tok-type">usize</span>,</span>
<span class="line" id="L168">) ?*<span class="tok-type">anyopaque</span> {</span>
<span class="line" id="L169"> <span class="tok-kw">if</span> (len > remaining) <span class="tok-builtin">@panic</span>(<span class="tok-str">"std.c.builtins.memcpy_chk called with len > remaining"</span>);</span>
<span class="line" id="L170"> <span class="tok-kw">return</span> __builtin_memcpy(dst, src, len);</span>
<span class="line" id="L171">}</span>
<span class="line" id="L172"></span>
<span class="line" id="L173"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_memcpy</span>(</span>
<span class="line" id="L174"> <span class="tok-kw">noalias</span> dst: ?*<span class="tok-type">anyopaque</span>,</span>
<span class="line" id="L175"> <span class="tok-kw">noalias</span> src: ?*<span class="tok-kw">const</span> <span class="tok-type">anyopaque</span>,</span>
<span class="line" id="L176"> len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L177">) ?*<span class="tok-type">anyopaque</span> {</span>
<span class="line" id="L178"> <span class="tok-kw">if</span> (len > <span class="tok-number">0</span>) <span class="tok-builtin">@memcpy</span>(</span>
<span class="line" id="L179"> <span class="tok-builtin">@as</span>([*]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(dst.?))[<span class="tok-number">0</span>..len],</span>
<span class="line" id="L180"> <span class="tok-builtin">@as</span>([*]<span class="tok-kw">const</span> <span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(src.?)),</span>
<span class="line" id="L181"> );</span>
<span class="line" id="L182"> <span class="tok-kw">return</span> dst;</span>
<span class="line" id="L183">}</span>
<span class="line" id="L184"></span>
<span class="line" id="L185"><span class="tok-comment">/// The return value of __builtin_expect is `expr`. `c` is the expected value</span></span>
<span class="line" id="L186"><span class="tok-comment">/// of `expr` and is used as a hint to the compiler in C. Here it is unused.</span></span>
<span class="line" id="L187"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_expect</span>(expr: <span class="tok-type">c_long</span>, c: <span class="tok-type">c_long</span>) <span class="tok-type">c_long</span> {</span>
<span class="line" id="L188"> _ = c;</span>
<span class="line" id="L189"> <span class="tok-kw">return</span> expr;</span>
<span class="line" id="L190">}</span>
<span class="line" id="L191"></span>
<span class="line" id="L192"><span class="tok-comment">/// returns a quiet NaN. Quiet NaNs have many representations; tagp is used to select one in an</span></span>
<span class="line" id="L193"><span class="tok-comment">/// implementation-defined way.</span></span>
<span class="line" id="L194"><span class="tok-comment">/// This implementation is based on the description for __builtin_nan provided in the GCC docs at</span></span>
<span class="line" id="L195"><span class="tok-comment">/// https://gcc.gnu.org/onlinedocs/gcc/Other-Builtins.html#index-_005f_005fbuiltin_005fnan</span></span>
<span class="line" id="L196"><span class="tok-comment">/// Comment is reproduced below:</span></span>
<span class="line" id="L197"><span class="tok-comment">/// Since ISO C99 defines this function in terms of strtod, which we do not implement, a description</span></span>
<span class="line" id="L198"><span class="tok-comment">/// of the parsing is in order.</span></span>
<span class="line" id="L199"><span class="tok-comment">/// The string is parsed as by strtol; that is, the base is recognized by leading ‘0’ or ‘0x’ prefixes.</span></span>
<span class="line" id="L200"><span class="tok-comment">/// The number parsed is placed in the significand such that the least significant bit of the number is</span></span>
<span class="line" id="L201"><span class="tok-comment">/// at the least significant bit of the significand.</span></span>
<span class="line" id="L202"><span class="tok-comment">/// The number is truncated to fit the significand field provided.</span></span>
<span class="line" id="L203"><span class="tok-comment">/// The significand is forced to be a quiet NaN.</span></span>
<span class="line" id="L204"><span class="tok-comment">///</span></span>
<span class="line" id="L205"><span class="tok-comment">/// If tagp contains any non-numeric characters, the function returns a NaN whose significand is zero.</span></span>
<span class="line" id="L206"><span class="tok-comment">/// If tagp is empty, the function returns a NaN whose significand is zero.</span></span>
<span class="line" id="L207"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_nanf</span>(tagp: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">f32</span> {</span>
<span class="line" id="L208"> <span class="tok-kw">const</span> parsed = std.fmt.parseUnsigned(<span class="tok-type">c_ulong</span>, tagp, <span class="tok-number">0</span>) <span class="tok-kw">catch</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L209"> <span class="tok-kw">const</span> bits = <span class="tok-builtin">@as</span>(<span class="tok-type">u23</span>, <span class="tok-builtin">@truncate</span>(parsed)); <span class="tok-comment">// single-precision float trailing significand is 23 bits</span>
</span>
<span class="line" id="L210"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">f32</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, bits) | std.math.qnan_u32));</span>
<span class="line" id="L211">}</span>
<span class="line" id="L212"></span>
<span class="line" id="L213"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_huge_valf</span>() <span class="tok-type">f32</span> {</span>
<span class="line" id="L214"> <span class="tok-kw">return</span> std.math.inf(<span class="tok-type">f32</span>);</span>
<span class="line" id="L215">}</span>
<span class="line" id="L216"></span>
<span class="line" id="L217"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_inff</span>() <span class="tok-type">f32</span> {</span>
<span class="line" id="L218"> <span class="tok-kw">return</span> std.math.inf(<span class="tok-type">f32</span>);</span>
<span class="line" id="L219">}</span>
<span class="line" id="L220"></span>
<span class="line" id="L221"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_isnan</span>(x: <span class="tok-kw">anytype</span>) <span class="tok-type">c_int</span> {</span>
<span class="line" id="L222"> <span class="tok-kw">return</span> <span class="tok-builtin">@intFromBool</span>(std.math.isNan(x));</span>
<span class="line" id="L223">}</span>
<span class="line" id="L224"></span>
<span class="line" id="L225"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_isinf</span>(x: <span class="tok-kw">anytype</span>) <span class="tok-type">c_int</span> {</span>
<span class="line" id="L226"> <span class="tok-kw">return</span> <span class="tok-builtin">@intFromBool</span>(std.math.isInf(x));</span>
<span class="line" id="L227">}</span>
<span class="line" id="L228"></span>
<span class="line" id="L229"><span class="tok-comment">/// Similar to isinf, except the return value is -1 for an argument of -Inf and 1 for an argument of +Inf.</span></span>
<span class="line" id="L230"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_isinf_sign</span>(x: <span class="tok-kw">anytype</span>) <span class="tok-type">c_int</span> {</span>
<span class="line" id="L231"> <span class="tok-kw">if</span> (!std.math.isInf(x)) <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L232"> <span class="tok-kw">return</span> <span class="tok-kw">if</span> (std.math.isPositiveInf(x)) <span class="tok-number">1</span> <span class="tok-kw">else</span> -<span class="tok-number">1</span>;</span>
<span class="line" id="L233">}</span>
<span class="line" id="L234"></span>
<span class="line" id="L235"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__has_builtin</span>(func: <span class="tok-kw">anytype</span>) <span class="tok-type">c_int</span> {</span>
<span class="line" id="L236"> _ = func;</span>
<span class="line" id="L237"> <span class="tok-kw">return</span> <span class="tok-builtin">@intFromBool</span>(<span class="tok-null">true</span>);</span>
<span class="line" id="L238">}</span>
<span class="line" id="L239"></span>
<span class="line" id="L240"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_assume</span>(cond: <span class="tok-type">bool</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L241"> <span class="tok-kw">if</span> (!cond) <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L242">}</span>
<span class="line" id="L243"></span>
<span class="line" id="L244"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_unreachable</span>() <span class="tok-type">noreturn</span> {</span>
<span class="line" id="L245"> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L246">}</span>
<span class="line" id="L247"></span>
<span class="line" id="L248"><span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_constant_p</span>(expr: <span class="tok-kw">anytype</span>) <span class="tok-type">c_int</span> {</span>
<span class="line" id="L249"> _ = expr;</span>
<span class="line" id="L250"> <span class="tok-kw">return</span> <span class="tok-builtin">@intFromBool</span>(<span class="tok-null">false</span>);</span>
<span class="line" id="L251">}</span>
<span class="line" id="L252"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">__builtin_mul_overflow</span>(a: <span class="tok-kw">anytype</span>, b: <span class="tok-kw">anytype</span>, result: *<span class="tok-builtin">@TypeOf</span>(a, b)) <span class="tok-type">c_int</span> {</span>
<span class="line" id="L253"> <span class="tok-kw">const</span> res = <span class="tok-builtin">@mulWithOverflow</span>(a, b);</span>
<span class="line" id="L254"> result.* = res[<span class="tok-number">0</span>];</span>
<span class="line" id="L255"> <span class="tok-kw">return</span> res[<span class="tok-number">1</span>];</span>
<span class="line" id="L256">}</span>
<span class="line" id="L257"></span>
<span class="line" id="L258"><span class="tok-comment">// __builtin_alloca_with_align is not currently implemented.</span>
</span>
<span class="line" id="L259"><span class="tok-comment">// It is used in a run-translated-c test and a test-translate-c test to ensure that non-implemented</span>
</span>
<span class="line" id="L260"><span class="tok-comment">// builtins are correctly demoted. If you implement __builtin_alloca_with_align, please update the</span>
</span>
<span class="line" id="L261"><span class="tok-comment">// run-translated-c test and the test-translate-c test to use a different non-implemented builtin.</span>
</span>
<span class="line" id="L262"><span class="tok-comment">// pub fn __builtin_alloca_with_align(size: usize, alignment: usize) callconv(.Inline) *anyopaque {}</span>
</span>
<span class="line" id="L263"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/zig/Server.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1">in: std.fs.File,</span>
<span class="line" id="L2">out: std.fs.File,</span>
<span class="line" id="L3">receive_fifo: std.fifo.LinearFifo(<span class="tok-type">u8</span>, .Dynamic),</span>
<span class="line" id="L4"></span>
<span class="line" id="L5"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Message = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L6"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Header = <span class="tok-kw">extern</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L7"> tag: Tag,</span>
<span class="line" id="L8"> <span class="tok-comment">/// Size of the body only; does not include this Header.</span></span>
<span class="line" id="L9"> bytes_len: <span class="tok-type">u32</span>,</span>
<span class="line" id="L10"> };</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Tag = <span class="tok-kw">enum</span>(<span class="tok-type">u32</span>) {</span>
<span class="line" id="L13"> <span class="tok-comment">/// Body is a UTF-8 string.</span></span>
<span class="line" id="L14"> zig_version,</span>
<span class="line" id="L15"> <span class="tok-comment">/// Body is an ErrorBundle.</span></span>
<span class="line" id="L16"> error_bundle,</span>
<span class="line" id="L17"> <span class="tok-comment">/// Body is a UTF-8 string.</span></span>
<span class="line" id="L18"> progress,</span>
<span class="line" id="L19"> <span class="tok-comment">/// Body is a EmitBinPath.</span></span>
<span class="line" id="L20"> emit_bin_path,</span>
<span class="line" id="L21"> <span class="tok-comment">/// Body is a TestMetadata</span></span>
<span class="line" id="L22"> test_metadata,</span>
<span class="line" id="L23"> <span class="tok-comment">/// Body is a TestResults</span></span>
<span class="line" id="L24"> test_results,</span>
<span class="line" id="L25"></span>
<span class="line" id="L26"> _,</span>
<span class="line" id="L27"> };</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"> <span class="tok-comment">/// Trailing:</span></span>
<span class="line" id="L30"> <span class="tok-comment">/// * extra: [extra_len]u32,</span></span>
<span class="line" id="L31"> <span class="tok-comment">/// * string_bytes: [string_bytes_len]u8,</span></span>
<span class="line" id="L32"> <span class="tok-comment">/// See `std.zig.ErrorBundle`.</span></span>
<span class="line" id="L33"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> ErrorBundle = <span class="tok-kw">extern</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L34"> extra_len: <span class="tok-type">u32</span>,</span>
<span class="line" id="L35"> string_bytes_len: <span class="tok-type">u32</span>,</span>
<span class="line" id="L36"> };</span>
<span class="line" id="L37"></span>
<span class="line" id="L38"> <span class="tok-comment">/// Trailing:</span></span>
<span class="line" id="L39"> <span class="tok-comment">/// * name: [tests_len]u32</span></span>
<span class="line" id="L40"> <span class="tok-comment">/// - null-terminated string_bytes index</span></span>
<span class="line" id="L41"> <span class="tok-comment">/// * async_frame_len: [tests_len]u32,</span></span>
<span class="line" id="L42"> <span class="tok-comment">/// - 0 means not async</span></span>
<span class="line" id="L43"> <span class="tok-comment">/// * expected_panic_msg: [tests_len]u32,</span></span>
<span class="line" id="L44"> <span class="tok-comment">/// - null-terminated string_bytes index</span></span>
<span class="line" id="L45"> <span class="tok-comment">/// - 0 means does not expect pani</span></span>
<span class="line" id="L46"> <span class="tok-comment">/// * string_bytes: [string_bytes_len]u8,</span></span>
<span class="line" id="L47"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> TestMetadata = <span class="tok-kw">extern</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L48"> string_bytes_len: <span class="tok-type">u32</span>,</span>
<span class="line" id="L49"> tests_len: <span class="tok-type">u32</span>,</span>
<span class="line" id="L50"> };</span>
<span class="line" id="L51"></span>
<span class="line" id="L52"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> TestResults = <span class="tok-kw">extern</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L53"> index: <span class="tok-type">u32</span>,</span>
<span class="line" id="L54"> flags: Flags,</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Flags = <span class="tok-kw">packed</span> <span class="tok-kw">struct</span>(<span class="tok-type">u8</span>) {</span>
<span class="line" id="L57"> fail: <span class="tok-type">bool</span>,</span>
<span class="line" id="L58"> skip: <span class="tok-type">bool</span>,</span>
<span class="line" id="L59"> leak: <span class="tok-type">bool</span>,</span>
<span class="line" id="L60"></span>
<span class="line" id="L61"> reserved: <span class="tok-type">u5</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L62"> };</span>
<span class="line" id="L63"> };</span>
<span class="line" id="L64"></span>
<span class="line" id="L65"> <span class="tok-comment">/// Trailing:</span></span>
<span class="line" id="L66"> <span class="tok-comment">/// * the file system path the emitted binary can be found</span></span>
<span class="line" id="L67"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> EmitBinPath = <span class="tok-kw">extern</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L68"> flags: Flags,</span>
<span class="line" id="L69"></span>
<span class="line" id="L70"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Flags = <span class="tok-kw">packed</span> <span class="tok-kw">struct</span>(<span class="tok-type">u8</span>) {</span>
<span class="line" id="L71"> cache_hit: <span class="tok-type">bool</span>,</span>
<span class="line" id="L72"> reserved: <span class="tok-type">u7</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L73"> };</span>
<span class="line" id="L74"> };</span>
<span class="line" id="L75">};</span>
<span class="line" id="L76"></span>
<span class="line" id="L77"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Options = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L78"> gpa: Allocator,</span>
<span class="line" id="L79"> in: std.fs.File,</span>
<span class="line" id="L80"> out: std.fs.File,</span>
<span class="line" id="L81"> zig_version: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L82">};</span>
<span class="line" id="L83"></span>
<span class="line" id="L84"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(options: Options) !Server {</span>
<span class="line" id="L85"> <span class="tok-kw">var</span> s: Server = .{</span>
<span class="line" id="L86"> .in = options.in,</span>
<span class="line" id="L87"> .out = options.out,</span>
<span class="line" id="L88"> .receive_fifo = std.fifo.LinearFifo(<span class="tok-type">u8</span>, .Dynamic).init(options.gpa),</span>
<span class="line" id="L89"> };</span>
<span class="line" id="L90"> <span class="tok-kw">try</span> s.serveStringMessage(.zig_version, options.zig_version);</span>
<span class="line" id="L91"> <span class="tok-kw">return</span> s;</span>
<span class="line" id="L92">}</span>
<span class="line" id="L93"></span>
<span class="line" id="L94"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(s: *Server) <span class="tok-type">void</span> {</span>
<span class="line" id="L95"> s.receive_fifo.deinit();</span>
<span class="line" id="L96"> s.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L97">}</span>
<span class="line" id="L98"></span>
<span class="line" id="L99"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">receiveMessage</span>(s: *Server) !InMessage.Header {</span>
<span class="line" id="L100"> <span class="tok-kw">const</span> Header = InMessage.Header;</span>
<span class="line" id="L101"> <span class="tok-kw">const</span> fifo = &s.receive_fifo;</span>
<span class="line" id="L102"></span>
<span class="line" id="L103"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L104"> <span class="tok-kw">const</span> buf = fifo.readableSlice(<span class="tok-number">0</span>);</span>
<span class="line" id="L105"> assert(fifo.readableLength() == buf.len);</span>
<span class="line" id="L106"> <span class="tok-kw">if</span> (buf.len >= <span class="tok-builtin">@sizeOf</span>(Header)) {</span>
<span class="line" id="L107"> <span class="tok-comment">// workaround for https://github.com/ziglang/zig/issues/14904</span>
</span>
<span class="line" id="L108"> <span class="tok-kw">const</span> bytes_len = bswap_and_workaround_u32(buf[<span class="tok-number">4</span>..][<span class="tok-number">0</span>..<span class="tok-number">4</span>]);</span>
<span class="line" id="L109"> <span class="tok-kw">const</span> tag = bswap_and_workaround_tag(buf[<span class="tok-number">0</span>..][<span class="tok-number">0</span>..<span class="tok-number">4</span>]);</span>
<span class="line" id="L110"></span>
<span class="line" id="L111"> <span class="tok-kw">if</span> (buf.len - <span class="tok-builtin">@sizeOf</span>(Header) >= bytes_len) {</span>
<span class="line" id="L112"> fifo.discard(<span class="tok-builtin">@sizeOf</span>(Header));</span>
<span class="line" id="L113"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L114"> .tag = tag,</span>
<span class="line" id="L115"> .bytes_len = bytes_len,</span>
<span class="line" id="L116"> };</span>
<span class="line" id="L117"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L118"> <span class="tok-kw">const</span> needed = bytes_len - (buf.len - <span class="tok-builtin">@sizeOf</span>(Header));</span>
<span class="line" id="L119"> <span class="tok-kw">const</span> write_buffer = <span class="tok-kw">try</span> fifo.writableWithSize(needed);</span>
<span class="line" id="L120"> <span class="tok-kw">const</span> amt = <span class="tok-kw">try</span> s.in.read(write_buffer);</span>
<span class="line" id="L121"> fifo.update(amt);</span>
<span class="line" id="L122"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L123"> }</span>
<span class="line" id="L124"> }</span>
<span class="line" id="L125"></span>
<span class="line" id="L126"> <span class="tok-kw">const</span> write_buffer = <span class="tok-kw">try</span> fifo.writableWithSize(<span class="tok-number">256</span>);</span>
<span class="line" id="L127"> <span class="tok-kw">const</span> amt = <span class="tok-kw">try</span> s.in.read(write_buffer);</span>
<span class="line" id="L128"> fifo.update(amt);</span>
<span class="line" id="L129"> }</span>
<span class="line" id="L130">}</span>
<span class="line" id="L131"></span>
<span class="line" id="L132"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">receiveBody_u32</span>(s: *Server) !<span class="tok-type">u32</span> {</span>
<span class="line" id="L133"> <span class="tok-kw">const</span> fifo = &s.receive_fifo;</span>
<span class="line" id="L134"> <span class="tok-kw">const</span> buf = fifo.readableSlice(<span class="tok-number">0</span>);</span>
<span class="line" id="L135"> <span class="tok-kw">const</span> result = <span class="tok-builtin">@as</span>(*<span class="tok-kw">align</span>(<span class="tok-number">1</span>) <span class="tok-kw">const</span> <span class="tok-type">u32</span>, <span class="tok-builtin">@ptrCast</span>(buf[<span class="tok-number">0</span>..<span class="tok-number">4</span>])).*;</span>
<span class="line" id="L136"> fifo.discard(<span class="tok-number">4</span>);</span>
<span class="line" id="L137"> <span class="tok-kw">return</span> bswap(result);</span>
<span class="line" id="L138">}</span>
<span class="line" id="L139"></span>
<span class="line" id="L140"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">serveStringMessage</span>(s: *Server, tag: OutMessage.Tag, msg: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L141"> <span class="tok-kw">return</span> s.serveMessage(.{</span>
<span class="line" id="L142"> .tag = tag,</span>
<span class="line" id="L143"> .bytes_len = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(msg.len)),</span>
<span class="line" id="L144"> }, &.{msg});</span>
<span class="line" id="L145">}</span>
<span class="line" id="L146"></span>
<span class="line" id="L147"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">serveMessage</span>(</span>
<span class="line" id="L148"> s: *<span class="tok-kw">const</span> Server,</span>
<span class="line" id="L149"> header: OutMessage.Header,</span>
<span class="line" id="L150"> bufs: []<span class="tok-kw">const</span> []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L151">) !<span class="tok-type">void</span> {</span>
<span class="line" id="L152"> <span class="tok-kw">var</span> iovecs: [<span class="tok-number">10</span>]std.os.iovec_const = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L153"> <span class="tok-kw">const</span> header_le = bswap(header);</span>
<span class="line" id="L154"> iovecs[<span class="tok-number">0</span>] = .{</span>
<span class="line" id="L155"> .iov_base = <span class="tok-builtin">@as</span>([*]<span class="tok-kw">const</span> <span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&header_le)),</span>
<span class="line" id="L156"> .iov_len = <span class="tok-builtin">@sizeOf</span>(OutMessage.Header),</span>
<span class="line" id="L157"> };</span>
<span class="line" id="L158"> <span class="tok-kw">for</span> (bufs, iovecs[<span class="tok-number">1</span> .. bufs.len + <span class="tok-number">1</span>]) |buf, *iovec| {</span>
<span class="line" id="L159"> iovec.* = .{</span>
<span class="line" id="L160"> .iov_base = buf.ptr,</span>
<span class="line" id="L161"> .iov_len = buf.len,</span>
<span class="line" id="L162"> };</span>
<span class="line" id="L163"> }</span>
<span class="line" id="L164"> <span class="tok-kw">try</span> s.out.writevAll(iovecs[<span class="tok-number">0</span> .. bufs.len + <span class="tok-number">1</span>]);</span>
<span class="line" id="L165">}</span>
<span class="line" id="L166"></span>
<span class="line" id="L167"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">serveEmitBinPath</span>(</span>
<span class="line" id="L168"> s: *Server,</span>
<span class="line" id="L169"> fs_path: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L170"> header: OutMessage.EmitBinPath,</span>
<span class="line" id="L171">) !<span class="tok-type">void</span> {</span>
<span class="line" id="L172"> <span class="tok-kw">try</span> s.serveMessage(.{</span>
<span class="line" id="L173"> .tag = .emit_bin_path,</span>
<span class="line" id="L174"> .bytes_len = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(fs_path.len + <span class="tok-builtin">@sizeOf</span>(OutMessage.EmitBinPath))),</span>
<span class="line" id="L175"> }, &.{</span>
<span class="line" id="L176"> std.mem.asBytes(&header),</span>
<span class="line" id="L177"> fs_path,</span>
<span class="line" id="L178"> });</span>
<span class="line" id="L179">}</span>
<span class="line" id="L180"></span>
<span class="line" id="L181"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">serveTestResults</span>(</span>
<span class="line" id="L182"> s: *Server,</span>
<span class="line" id="L183"> msg: OutMessage.TestResults,</span>
<span class="line" id="L184">) !<span class="tok-type">void</span> {</span>
<span class="line" id="L185"> <span class="tok-kw">const</span> msg_le = bswap(msg);</span>
<span class="line" id="L186"> <span class="tok-kw">try</span> s.serveMessage(.{</span>
<span class="line" id="L187"> .tag = .test_results,</span>
<span class="line" id="L188"> .bytes_len = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(<span class="tok-builtin">@sizeOf</span>(OutMessage.TestResults))),</span>
<span class="line" id="L189"> }, &.{</span>
<span class="line" id="L190"> std.mem.asBytes(&msg_le),</span>
<span class="line" id="L191"> });</span>
<span class="line" id="L192">}</span>
<span class="line" id="L193"></span>
<span class="line" id="L194"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">serveErrorBundle</span>(s: *Server, error_bundle: std.zig.ErrorBundle) !<span class="tok-type">void</span> {</span>
<span class="line" id="L195"> <span class="tok-kw">const</span> eb_hdr: OutMessage.ErrorBundle = .{</span>
<span class="line" id="L196"> .extra_len = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(error_bundle.extra.len)),</span>
<span class="line" id="L197"> .string_bytes_len = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(error_bundle.string_bytes.len)),</span>
<span class="line" id="L198"> };</span>
<span class="line" id="L199"> <span class="tok-kw">const</span> bytes_len = <span class="tok-builtin">@sizeOf</span>(OutMessage.ErrorBundle) +</span>
<span class="line" id="L200"> <span class="tok-number">4</span> * error_bundle.extra.len + error_bundle.string_bytes.len;</span>
<span class="line" id="L201"> <span class="tok-kw">try</span> s.serveMessage(.{</span>
<span class="line" id="L202"> .tag = .error_bundle,</span>
<span class="line" id="L203"> .bytes_len = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(bytes_len)),</span>
<span class="line" id="L204"> }, &.{</span>
<span class="line" id="L205"> std.mem.asBytes(&eb_hdr),</span>
<span class="line" id="L206"> <span class="tok-comment">// TODO: implement @ptrCast between slices changing the length</span>
</span>
<span class="line" id="L207"> std.mem.sliceAsBytes(error_bundle.extra),</span>
<span class="line" id="L208"> error_bundle.string_bytes,</span>
<span class="line" id="L209"> });</span>
<span class="line" id="L210">}</span>
<span class="line" id="L211"></span>
<span class="line" id="L212"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> TestMetadata = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L213"> names: []<span class="tok-type">u32</span>,</span>
<span class="line" id="L214"> async_frame_sizes: []<span class="tok-type">u32</span>,</span>
<span class="line" id="L215"> expected_panic_msgs: []<span class="tok-type">u32</span>,</span>
<span class="line" id="L216"> string_bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L217">};</span>
<span class="line" id="L218"></span>
<span class="line" id="L219"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">serveTestMetadata</span>(s: *Server, test_metadata: TestMetadata) !<span class="tok-type">void</span> {</span>
<span class="line" id="L220"> <span class="tok-kw">const</span> header: OutMessage.TestMetadata = .{</span>
<span class="line" id="L221"> .tests_len = bswap(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(test_metadata.names.len))),</span>
<span class="line" id="L222"> .string_bytes_len = bswap(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(test_metadata.string_bytes.len))),</span>
<span class="line" id="L223"> };</span>
<span class="line" id="L224"> <span class="tok-kw">const</span> bytes_len = <span class="tok-builtin">@sizeOf</span>(OutMessage.TestMetadata) +</span>
<span class="line" id="L225"> <span class="tok-number">3</span> * <span class="tok-number">4</span> * test_metadata.names.len + test_metadata.string_bytes.len;</span>
<span class="line" id="L226"></span>
<span class="line" id="L227"> <span class="tok-kw">if</span> (need_bswap) {</span>
<span class="line" id="L228"> bswap_u32_array(test_metadata.names);</span>
<span class="line" id="L229"> bswap_u32_array(test_metadata.async_frame_sizes);</span>
<span class="line" id="L230"> bswap_u32_array(test_metadata.expected_panic_msgs);</span>
<span class="line" id="L231"> }</span>
<span class="line" id="L232"> <span class="tok-kw">defer</span> <span class="tok-kw">if</span> (need_bswap) {</span>
<span class="line" id="L233"> bswap_u32_array(test_metadata.names);</span>
<span class="line" id="L234"> bswap_u32_array(test_metadata.async_frame_sizes);</span>
<span class="line" id="L235"> bswap_u32_array(test_metadata.expected_panic_msgs);</span>
<span class="line" id="L236"> };</span>
<span class="line" id="L237"></span>
<span class="line" id="L238"> <span class="tok-kw">return</span> s.serveMessage(.{</span>
<span class="line" id="L239"> .tag = .test_metadata,</span>
<span class="line" id="L240"> .bytes_len = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(bytes_len)),</span>
<span class="line" id="L241"> }, &.{</span>
<span class="line" id="L242"> std.mem.asBytes(&header),</span>
<span class="line" id="L243"> <span class="tok-comment">// TODO: implement @ptrCast between slices changing the length</span>
</span>
<span class="line" id="L244"> std.mem.sliceAsBytes(test_metadata.names),</span>
<span class="line" id="L245"> std.mem.sliceAsBytes(test_metadata.async_frame_sizes),</span>
<span class="line" id="L246"> std.mem.sliceAsBytes(test_metadata.expected_panic_msgs),</span>
<span class="line" id="L247"> test_metadata.string_bytes,</span>
<span class="line" id="L248"> });</span>
<span class="line" id="L249">}</span>
<span class="line" id="L250"></span>
<span class="line" id="L251"><span class="tok-kw">fn</span> <span class="tok-fn">bswap</span>(x: <span class="tok-kw">anytype</span>) <span class="tok-builtin">@TypeOf</span>(x) {</span>
<span class="line" id="L252"> <span class="tok-kw">if</span> (!need_bswap) <span class="tok-kw">return</span> x;</span>
<span class="line" id="L253"></span>
<span class="line" id="L254"> <span class="tok-kw">const</span> T = <span class="tok-builtin">@TypeOf</span>(x);</span>
<span class="line" id="L255"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(T)) {</span>
<span class="line" id="L256"> .Enum => <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(T, <span class="tok-builtin">@enumFromInt</span>(<span class="tok-builtin">@byteSwap</span>(<span class="tok-builtin">@intFromEnum</span>(x)))),</span>
<span class="line" id="L257"> .Int => <span class="tok-kw">return</span> <span class="tok-builtin">@byteSwap</span>(x),</span>
<span class="line" id="L258"> .Struct => |info| <span class="tok-kw">switch</span> (info.layout) {</span>
<span class="line" id="L259"> .Extern => {</span>
<span class="line" id="L260"> <span class="tok-kw">var</span> result: T = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L261"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (info.fields) |field| {</span>
<span class="line" id="L262"> <span class="tok-builtin">@field</span>(result, field.name) = bswap(<span class="tok-builtin">@field</span>(x, field.name));</span>
<span class="line" id="L263"> }</span>
<span class="line" id="L264"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L265"> },</span>
<span class="line" id="L266"> .Packed => {</span>
<span class="line" id="L267"> <span class="tok-kw">const</span> I = info.backing_integer.?;</span>
<span class="line" id="L268"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(T, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@byteSwap</span>(<span class="tok-builtin">@as</span>(I, <span class="tok-builtin">@bitCast</span>(x)))));</span>
<span class="line" id="L269"> },</span>
<span class="line" id="L270"> .Auto => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"auto layout struct"</span>),</span>
<span class="line" id="L271"> },</span>
<span class="line" id="L272"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"bswap on type "</span> ++ <span class="tok-builtin">@typeName</span>(T)),</span>
<span class="line" id="L273"> }</span>
<span class="line" id="L274">}</span>
<span class="line" id="L275"></span>
<span class="line" id="L276"><span class="tok-kw">fn</span> <span class="tok-fn">bswap_u32_array</span>(slice: []<span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L277"> <span class="tok-kw">comptime</span> assert(need_bswap);</span>
<span class="line" id="L278"> <span class="tok-kw">for</span> (slice) |*elem| elem.* = <span class="tok-builtin">@byteSwap</span>(elem.*);</span>
<span class="line" id="L279">}</span>
<span class="line" id="L280"></span>
<span class="line" id="L281"><span class="tok-comment">/// workaround for https://github.com/ziglang/zig/issues/14904</span></span>
<span class="line" id="L282"><span class="tok-kw">fn</span> <span class="tok-fn">bswap_and_workaround_u32</span>(bytes_ptr: *<span class="tok-kw">const</span> [<span class="tok-number">4</span>]<span class="tok-type">u8</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L283"> <span class="tok-kw">return</span> std.mem.readIntLittle(<span class="tok-type">u32</span>, bytes_ptr);</span>
<span class="line" id="L284">}</span>
<span class="line" id="L285"></span>
<span class="line" id="L286"><span class="tok-comment">/// workaround for https://github.com/ziglang/zig/issues/14904</span></span>
<span class="line" id="L287"><span class="tok-kw">fn</span> <span class="tok-fn">bswap_and_workaround_tag</span>(bytes_ptr: *<span class="tok-kw">const</span> [<span class="tok-number">4</span>]<span class="tok-type">u8</span>) InMessage.Tag {</span>
<span class="line" id="L288"> <span class="tok-kw">const</span> int = std.mem.readIntLittle(<span class="tok-type">u32</span>, bytes_ptr);</span>
<span class="line" id="L289"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(InMessage.Tag, <span class="tok-builtin">@enumFromInt</span>(int));</span>
<span class="line" id="L290">}</span>
<span class="line" id="L291"></span>
<span class="line" id="L292"><span class="tok-kw">const</span> OutMessage = std.zig.Server.Message;</span>
<span class="line" id="L293"><span class="tok-kw">const</span> InMessage = std.zig.Client.Message;</span>
<span class="line" id="L294"></span>
<span class="line" id="L295"><span class="tok-kw">const</span> Server = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L296"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L297"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L298"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L299"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L300"><span class="tok-kw">const</span> native_endian = builtin.target.cpu.arch.endian();</span>
<span class="line" id="L301"><span class="tok-kw">const</span> need_bswap = native_endian != .Little;</span>
<span class="line" id="L302"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/zig/system.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> NativePaths = <span class="tok-builtin">@import</span>(<span class="tok-str">"system/NativePaths.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> NativeTargetInfo = <span class="tok-builtin">@import</span>(<span class="tok-str">"system/NativeTargetInfo.zig"</span>);</span>
<span class="line" id="L3"></span>
<span class="line" id="L4"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> windows = <span class="tok-builtin">@import</span>(<span class="tok-str">"system/windows.zig"</span>);</span>
<span class="line" id="L5"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> darwin = <span class="tok-builtin">@import</span>(<span class="tok-str">"system/darwin.zig"</span>);</span>
<span class="line" id="L6"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> linux = <span class="tok-builtin">@import</span>(<span class="tok-str">"system/linux.zig"</span>);</span>
<span class="line" id="L7"></span>
<span class="line" id="L8"><span class="tok-kw">test</span> {</span>
<span class="line" id="L9"> _ = NativePaths;</span>
<span class="line" id="L10"> _ = NativeTargetInfo;</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"> _ = darwin;</span>
<span class="line" id="L13"> _ = linux;</span>
<span class="line" id="L14"> _ = windows;</span>
<span class="line" id="L15">}</span>
<span class="line" id="L16"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-comment">/// Given a type and value, cast the value to the type as c would.</span></span>
<span class="line" id="L8"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">cast</span>(<span class="tok-kw">comptime</span> DestType: <span class="tok-type">type</span>, target: <span class="tok-kw">anytype</span>) DestType {</span>
<span class="line" id="L9"> <span class="tok-comment">// this function should behave like transCCast in translate-c, except it's for macros</span>
</span>
<span class="line" id="L10"> <span class="tok-kw">const</span> SourceType = <span class="tok-builtin">@TypeOf</span>(target);</span>
<span class="line" id="L11"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(DestType)) {</span>
<span class="line" id="L12"> .Fn => <span class="tok-kw">return</span> castToPtr(*<span class="tok-kw">const</span> DestType, SourceType, target),</span>
<span class="line" id="L13"> .Pointer => <span class="tok-kw">return</span> castToPtr(DestType, SourceType, target),</span>
<span class="line" id="L14"> .Optional => |dest_opt| {</span>
<span class="line" id="L15"> <span class="tok-kw">if</span> (<span class="tok-builtin">@typeInfo</span>(dest_opt.child) == .Pointer) {</span>
<span class="line" id="L16"> <span class="tok-kw">return</span> castToPtr(DestType, SourceType, target);</span>
<span class="line" id="L17"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (<span class="tok-builtin">@typeInfo</span>(dest_opt.child) == .Fn) {</span>
<span class="line" id="L18"> <span class="tok-kw">return</span> castToPtr(?*<span class="tok-kw">const</span> dest_opt.child, SourceType, target);</span>
<span class="line" id="L19"> }</span>
<span class="line" id="L20"> },</span>
<span class="line" id="L21"> .Int => {</span>
<span class="line" id="L22"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(SourceType)) {</span>
<span class="line" id="L23"> .Pointer => {</span>
<span class="line" id="L24"> <span class="tok-kw">return</span> castInt(DestType, <span class="tok-builtin">@intFromPtr</span>(target));</span>
<span class="line" id="L25"> },</span>
<span class="line" id="L26"> .Optional => |opt| {</span>
<span class="line" id="L27"> <span class="tok-kw">if</span> (<span class="tok-builtin">@typeInfo</span>(opt.child) == .Pointer) {</span>
<span class="line" id="L28"> <span class="tok-kw">return</span> castInt(DestType, <span class="tok-builtin">@intFromPtr</span>(target));</span>
<span class="line" id="L29"> }</span>
<span class="line" id="L30"> },</span>
<span class="line" id="L31"> .Int => {</span>
<span class="line" id="L32"> <span class="tok-kw">return</span> castInt(DestType, target);</span>
<span class="line" id="L33"> },</span>
<span class="line" id="L34"> .Fn => {</span>
<span class="line" id="L35"> <span class="tok-kw">return</span> castInt(DestType, <span class="tok-builtin">@intFromPtr</span>(&target));</span>
<span class="line" id="L36"> },</span>
<span class="line" id="L37"> .Bool => {</span>
<span class="line" id="L38"> <span class="tok-kw">return</span> <span class="tok-builtin">@intFromBool</span>(target);</span>
<span class="line" id="L39"> },</span>
<span class="line" id="L40"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L41"> }</span>
<span class="line" id="L42"> },</span>
<span class="line" id="L43"> .Float => {</span>
<span class="line" id="L44"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(SourceType)) {</span>
<span class="line" id="L45"> .Int => <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(DestType, <span class="tok-builtin">@floatFromInt</span>(target)),</span>
<span class="line" id="L46"> .Float => <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(DestType, <span class="tok-builtin">@floatCast</span>(target)),</span>
<span class="line" id="L47"> .Bool => <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(DestType, <span class="tok-builtin">@floatFromInt</span>(<span class="tok-builtin">@intFromBool</span>(target))),</span>
<span class="line" id="L48"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L49"> }</span>
<span class="line" id="L50"> },</span>
<span class="line" id="L51"> .Union => |info| {</span>
<span class="line" id="L52"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (info.fields) |field| {</span>
<span class="line" id="L53"> <span class="tok-kw">if</span> (field.<span class="tok-type">type</span> == SourceType) <span class="tok-kw">return</span> <span class="tok-builtin">@unionInit</span>(DestType, field.name, target);</span>
<span class="line" id="L54"> }</span>
<span class="line" id="L55"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"cast to union type '"</span> ++ <span class="tok-builtin">@typeName</span>(DestType) ++ <span class="tok-str">"' from type '"</span> ++ <span class="tok-builtin">@typeName</span>(SourceType) ++ <span class="tok-str">"' which is not present in union"</span>);</span>
<span class="line" id="L56"> },</span>
<span class="line" id="L57"> .Bool => <span class="tok-kw">return</span> cast(<span class="tok-type">usize</span>, target) != <span class="tok-number">0</span>,</span>
<span class="line" id="L58"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L59"> }</span>
<span class="line" id="L60"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(DestType, target);</span>
<span class="line" id="L61">}</span>
<span class="line" id="L62"></span>
<span class="line" id="L63"><span class="tok-kw">fn</span> <span class="tok-fn">castInt</span>(<span class="tok-kw">comptime</span> DestType: <span class="tok-type">type</span>, target: <span class="tok-kw">anytype</span>) DestType {</span>
<span class="line" id="L64"> <span class="tok-kw">const</span> dest = <span class="tok-builtin">@typeInfo</span>(DestType).Int;</span>
<span class="line" id="L65"> <span class="tok-kw">const</span> source = <span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(target)).Int;</span>
<span class="line" id="L66"></span>
<span class="line" id="L67"> <span class="tok-kw">if</span> (dest.bits < source.bits)</span>
<span class="line" id="L68"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(DestType, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(std.meta.Int(source.signedness, dest.bits), <span class="tok-builtin">@truncate</span>(target))))</span>
<span class="line" id="L69"> <span class="tok-kw">else</span></span>
<span class="line" id="L70"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(DestType, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(std.meta.Int(source.signedness, dest.bits), target)));</span>
<span class="line" id="L71">}</span>
<span class="line" id="L72"></span>
<span class="line" id="L73"><span class="tok-kw">fn</span> <span class="tok-fn">castPtr</span>(<span class="tok-kw">comptime</span> DestType: <span class="tok-type">type</span>, target: <span class="tok-kw">anytype</span>) DestType {</span>
<span class="line" id="L74"> <span class="tok-kw">return</span> <span class="tok-builtin">@constCast</span>(<span class="tok-builtin">@volatileCast</span>(<span class="tok-builtin">@alignCast</span>(<span class="tok-builtin">@ptrCast</span>(target))));</span>
<span class="line" id="L75">}</span>
<span class="line" id="L76"></span>
<span class="line" id="L77"><span class="tok-kw">fn</span> <span class="tok-fn">castToPtr</span>(<span class="tok-kw">comptime</span> DestType: <span class="tok-type">type</span>, <span class="tok-kw">comptime</span> SourceType: <span class="tok-type">type</span>, target: <span class="tok-kw">anytype</span>) DestType {</span>
<span class="line" id="L78"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(SourceType)) {</span>
<span class="line" id="L79"> .Int => {</span>
<span class="line" id="L80"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(DestType, <span class="tok-builtin">@ptrFromInt</span>(castInt(<span class="tok-type">usize</span>, target)));</span>
<span class="line" id="L81"> },</span>
<span class="line" id="L82"> .ComptimeInt => {</span>
<span class="line" id="L83"> <span class="tok-kw">if</span> (target < <span class="tok-number">0</span>)</span>
<span class="line" id="L84"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(DestType, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">isize</span>, <span class="tok-builtin">@intCast</span>(target))))))</span>
<span class="line" id="L85"> <span class="tok-kw">else</span></span>
<span class="line" id="L86"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(DestType, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(target))));</span>
<span class="line" id="L87"> },</span>
<span class="line" id="L88"> .Pointer => {</span>
<span class="line" id="L89"> <span class="tok-kw">return</span> castPtr(DestType, target);</span>
<span class="line" id="L90"> },</span>
<span class="line" id="L91"> .Optional => |target_opt| {</span>
<span class="line" id="L92"> <span class="tok-kw">if</span> (<span class="tok-builtin">@typeInfo</span>(target_opt.child) == .Pointer) {</span>
<span class="line" id="L93"> <span class="tok-kw">return</span> castPtr(DestType, target);</span>
<span class="line" id="L94"> }</span>
<span class="line" id="L95"> },</span>
<span class="line" id="L96"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L97"> }</span>
<span class="line" id="L98"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(DestType, target);</span>
<span class="line" id="L99">}</span>
<span class="line" id="L100"></span>
<span class="line" id="L101"><span class="tok-kw">fn</span> <span class="tok-fn">ptrInfo</span>(<span class="tok-kw">comptime</span> PtrType: <span class="tok-type">type</span>) std.builtin.Type.Pointer {</span>
<span class="line" id="L102"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(PtrType)) {</span>
<span class="line" id="L103"> .Optional => |opt_info| <span class="tok-builtin">@typeInfo</span>(opt_info.child).Pointer,</span>
<span class="line" id="L104"> .Pointer => |ptr_info| ptr_info,</span>
<span class="line" id="L105"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L106"> };</span>
<span class="line" id="L107">}</span>
<span class="line" id="L108"></span>
<span class="line" id="L109"><span class="tok-kw">test</span> <span class="tok-str">"cast"</span> {</span>
<span class="line" id="L110"> <span class="tok-kw">var</span> i = <span class="tok-builtin">@as</span>(<span class="tok-type">i64</span>, <span class="tok-number">10</span>);</span>
<span class="line" id="L111"></span>
<span class="line" id="L112"> <span class="tok-kw">try</span> testing.expect(cast(*<span class="tok-type">u8</span>, <span class="tok-number">16</span>) == <span class="tok-builtin">@as</span>(*<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-number">16</span>)));</span>
<span class="line" id="L113"> <span class="tok-kw">try</span> testing.expect(cast(*<span class="tok-type">u64</span>, &i).* == <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-number">10</span>));</span>
<span class="line" id="L114"> <span class="tok-kw">try</span> testing.expect(cast(*<span class="tok-type">i64</span>, <span class="tok-builtin">@as</span>(?*<span class="tok-kw">align</span>(<span class="tok-number">1</span>) <span class="tok-type">i64</span>, &i)) == &i);</span>
<span class="line" id="L115"></span>
<span class="line" id="L116"> <span class="tok-kw">try</span> testing.expect(cast(?*<span class="tok-type">u8</span>, <span class="tok-number">2</span>) == <span class="tok-builtin">@as</span>(*<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-number">2</span>)));</span>
<span class="line" id="L117"> <span class="tok-kw">try</span> testing.expect(cast(?*<span class="tok-type">i64</span>, <span class="tok-builtin">@as</span>(*<span class="tok-kw">align</span>(<span class="tok-number">1</span>) <span class="tok-type">i64</span>, &i)) == &i);</span>
<span class="line" id="L118"> <span class="tok-kw">try</span> testing.expect(cast(?*<span class="tok-type">i64</span>, <span class="tok-builtin">@as</span>(?*<span class="tok-kw">align</span>(<span class="tok-number">1</span>) <span class="tok-type">i64</span>, &i)) == &i);</span>
<span class="line" id="L119"></span>
<span class="line" id="L120"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">4</span>), cast(<span class="tok-type">u32</span>, <span class="tok-builtin">@as</span>(*<span class="tok-type">u32</span>, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-number">4</span>))));</span>
<span class="line" id="L121"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">4</span>), cast(<span class="tok-type">u32</span>, <span class="tok-builtin">@as</span>(?*<span class="tok-type">u32</span>, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-number">4</span>))));</span>
<span class="line" id="L122"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">10</span>), cast(<span class="tok-type">u32</span>, <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-number">10</span>)));</span>
<span class="line" id="L123"></span>
<span class="line" id="L124"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">0x8000_0000</span>))), cast(<span class="tok-type">i32</span>, <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">0x8000_0000</span>)));</span>
<span class="line" id="L125"></span>
<span class="line" id="L126"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(*<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-number">2</span>)), cast(*<span class="tok-type">u8</span>, <span class="tok-builtin">@as</span>(*<span class="tok-kw">const</span> <span class="tok-type">u8</span>, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-number">2</span>))));</span>
<span class="line" id="L127"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(*<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-number">2</span>)), cast(*<span class="tok-type">u8</span>, <span class="tok-builtin">@as</span>(*<span class="tok-kw">volatile</span> <span class="tok-type">u8</span>, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-number">2</span>))));</span>
<span class="line" id="L128"></span>
<span class="line" id="L129"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(?*<span class="tok-type">anyopaque</span>, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-number">2</span>)), cast(?*<span class="tok-type">anyopaque</span>, <span class="tok-builtin">@as</span>(*<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-number">2</span>))));</span>
<span class="line" id="L130"></span>
<span class="line" id="L131"> <span class="tok-kw">var</span> foo: <span class="tok-type">c_int</span> = -<span class="tok-number">1</span>;</span>
<span class="line" id="L132"> <span class="tok-kw">try</span> testing.expect(cast(*<span class="tok-type">anyopaque</span>, -<span class="tok-number">1</span>) == <span class="tok-builtin">@as</span>(*<span class="tok-type">anyopaque</span>, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">isize</span>, -<span class="tok-number">1</span>))))));</span>
<span class="line" id="L133"> <span class="tok-kw">try</span> testing.expect(cast(*<span class="tok-type">anyopaque</span>, foo) == <span class="tok-builtin">@as</span>(*<span class="tok-type">anyopaque</span>, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">isize</span>, -<span class="tok-number">1</span>))))));</span>
<span class="line" id="L134"> <span class="tok-kw">try</span> testing.expect(cast(?*<span class="tok-type">anyopaque</span>, -<span class="tok-number">1</span>) == <span class="tok-builtin">@as</span>(?*<span class="tok-type">anyopaque</span>, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">isize</span>, -<span class="tok-number">1</span>))))));</span>
<span class="line" id="L135"> <span class="tok-kw">try</span> testing.expect(cast(?*<span class="tok-type">anyopaque</span>, foo) == <span class="tok-builtin">@as</span>(?*<span class="tok-type">anyopaque</span>, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">isize</span>, -<span class="tok-number">1</span>))))));</span>
<span class="line" id="L136"></span>
<span class="line" id="L137"> <span class="tok-kw">const</span> FnPtr = ?*<span class="tok-kw">align</span>(<span class="tok-number">1</span>) <span class="tok-kw">const</span> <span class="tok-kw">fn</span> (*<span class="tok-type">anyopaque</span>) <span class="tok-type">void</span>;</span>
<span class="line" id="L138"> <span class="tok-kw">try</span> testing.expect(cast(FnPtr, <span class="tok-number">0</span>) == <span class="tok-builtin">@as</span>(FnPtr, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">0</span>))));</span>
<span class="line" id="L139"> <span class="tok-kw">try</span> testing.expect(cast(FnPtr, foo) == <span class="tok-builtin">@as</span>(FnPtr, <span class="tok-builtin">@ptrFromInt</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@bitCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">isize</span>, -<span class="tok-number">1</span>))))));</span>
<span class="line" id="L140">}</span>
<span class="line" id="L141"></span>
<span class="line" id="L142"><span class="tok-comment">/// Given a value returns its size as C's sizeof operator would.</span></span>
<span class="line" id="L143"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">sizeof</span>(target: <span class="tok-kw">anytype</span>) <span class="tok-type">usize</span> {</span>
<span class="line" id="L144"> <span class="tok-kw">const</span> T: <span class="tok-type">type</span> = <span class="tok-kw">if</span> (<span class="tok-builtin">@TypeOf</span>(target) == <span class="tok-type">type</span>) target <span class="tok-kw">else</span> <span class="tok-builtin">@TypeOf</span>(target);</span>
<span class="line" id="L145"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(T)) {</span>
<span class="line" id="L146"> .Float, .Int, .Struct, .Union, .Array, .Bool, .Vector => <span class="tok-kw">return</span> <span class="tok-builtin">@sizeOf</span>(T),</span>
<span class="line" id="L147"> .Fn => {</span>
<span class="line" id="L148"> <span class="tok-comment">// sizeof(main) in C returns 1</span>
</span>
<span class="line" id="L149"> <span class="tok-kw">return</span> <span class="tok-number">1</span>;</span>
<span class="line" id="L150"> },</span>
<span class="line" id="L151"> .Null => <span class="tok-kw">return</span> <span class="tok-builtin">@sizeOf</span>(*<span class="tok-type">anyopaque</span>),</span>
<span class="line" id="L152"> .Void => {</span>
<span class="line" id="L153"> <span class="tok-comment">// Note: sizeof(void) is 1 on clang/gcc and 0 on MSVC.</span>
</span>
<span class="line" id="L154"> <span class="tok-kw">return</span> <span class="tok-number">1</span>;</span>
<span class="line" id="L155"> },</span>
<span class="line" id="L156"> .Opaque => {</span>
<span class="line" id="L157"> <span class="tok-kw">if</span> (T == <span class="tok-type">anyopaque</span>) {</span>
<span class="line" id="L158"> <span class="tok-comment">// Note: sizeof(void) is 1 on clang/gcc and 0 on MSVC.</span>
</span>
<span class="line" id="L159"> <span class="tok-kw">return</span> <span class="tok-number">1</span>;</span>
<span class="line" id="L160"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L161"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Cannot use C sizeof on opaque type "</span> ++ <span class="tok-builtin">@typeName</span>(T));</span>
<span class="line" id="L162"> }</span>
<span class="line" id="L163"> },</span>
<span class="line" id="L164"> .Optional => |opt| {</span>
<span class="line" id="L165"> <span class="tok-kw">if</span> (<span class="tok-builtin">@typeInfo</span>(opt.child) == .Pointer) {</span>
<span class="line" id="L166"> <span class="tok-kw">return</span> sizeof(opt.child);</span>
<span class="line" id="L167"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L168"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Cannot use C sizeof on non-pointer optional "</span> ++ <span class="tok-builtin">@typeName</span>(T));</span>
<span class="line" id="L169"> }</span>
<span class="line" id="L170"> },</span>
<span class="line" id="L171"> .Pointer => |ptr| {</span>
<span class="line" id="L172"> <span class="tok-kw">if</span> (ptr.size == .Slice) {</span>
<span class="line" id="L173"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Cannot use C sizeof on slice type "</span> ++ <span class="tok-builtin">@typeName</span>(T));</span>
<span class="line" id="L174"> }</span>
<span class="line" id="L175"> <span class="tok-comment">// for strings, sizeof("a") returns 2.</span>
</span>
<span class="line" id="L176"> <span class="tok-comment">// normal pointer decay scenarios from C are handled</span>
</span>
<span class="line" id="L177"> <span class="tok-comment">// in the .Array case above, but strings remain literals</span>
</span>
<span class="line" id="L178"> <span class="tok-comment">// and are therefore always pointers, so they need to be</span>
</span>
<span class="line" id="L179"> <span class="tok-comment">// specially handled here.</span>
</span>
<span class="line" id="L180"> <span class="tok-kw">if</span> (ptr.size == .One <span class="tok-kw">and</span> ptr.is_const <span class="tok-kw">and</span> <span class="tok-builtin">@typeInfo</span>(ptr.child) == .Array) {</span>
<span class="line" id="L181"> <span class="tok-kw">const</span> array_info = <span class="tok-builtin">@typeInfo</span>(ptr.child).Array;</span>
<span class="line" id="L182"> <span class="tok-kw">if</span> ((array_info.child == <span class="tok-type">u8</span> <span class="tok-kw">or</span> array_info.child == <span class="tok-type">u16</span>) <span class="tok-kw">and</span></span>
<span class="line" id="L183"> array_info.sentinel != <span class="tok-null">null</span> <span class="tok-kw">and</span></span>
<span class="line" id="L184"> <span class="tok-builtin">@as</span>(*<span class="tok-kw">align</span>(<span class="tok-number">1</span>) <span class="tok-kw">const</span> array_info.child, <span class="tok-builtin">@ptrCast</span>(array_info.sentinel.?)).* == <span class="tok-number">0</span>)</span>
<span class="line" id="L185"> {</span>
<span class="line" id="L186"> <span class="tok-comment">// length of the string plus one for the null terminator.</span>
</span>
<span class="line" id="L187"> <span class="tok-kw">return</span> (array_info.len + <span class="tok-number">1</span>) * <span class="tok-builtin">@sizeOf</span>(array_info.child);</span>
<span class="line" id="L188"> }</span>
<span class="line" id="L189"> }</span>
<span class="line" id="L190"> <span class="tok-comment">// When zero sized pointers are removed, this case will no</span>
</span>
<span class="line" id="L191"> <span class="tok-comment">// longer be reachable and can be deleted.</span>
</span>
<span class="line" id="L192"> <span class="tok-kw">if</span> (<span class="tok-builtin">@sizeOf</span>(T) == <span class="tok-number">0</span>) {</span>
<span class="line" id="L193"> <span class="tok-kw">return</span> <span class="tok-builtin">@sizeOf</span>(*<span class="tok-type">anyopaque</span>);</span>
<span class="line" id="L194"> }</span>
<span class="line" id="L195"> <span class="tok-kw">return</span> <span class="tok-builtin">@sizeOf</span>(T);</span>
<span class="line" id="L196"> },</span>
<span class="line" id="L197"> .ComptimeFloat => <span class="tok-kw">return</span> <span class="tok-builtin">@sizeOf</span>(<span class="tok-type">f64</span>), <span class="tok-comment">// TODO c_double #3999</span>
</span>
<span class="line" id="L198"> .ComptimeInt => {</span>
<span class="line" id="L199"> <span class="tok-comment">// TODO to get the correct result we have to translate</span>
</span>
<span class="line" id="L200"> <span class="tok-comment">// `1073741824 * 4` as `int(1073741824) *% int(4)` since</span>
</span>
<span class="line" id="L201"> <span class="tok-comment">// sizeof(1073741824 * 4) != sizeof(4294967296).</span>
</span>
<span class="line" id="L202"></span>
<span class="line" id="L203"> <span class="tok-comment">// TODO test if target fits in int, long or long long</span>
</span>
<span class="line" id="L204"> <span class="tok-kw">return</span> <span class="tok-builtin">@sizeOf</span>(<span class="tok-type">c_int</span>);</span>
<span class="line" id="L205"> },</span>
<span class="line" id="L206"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"std.meta.sizeof does not support type "</span> ++ <span class="tok-builtin">@typeName</span>(T)),</span>
<span class="line" id="L207"> }</span>
<span class="line" id="L208">}</span>
<span class="line" id="L209"></span>
<span class="line" id="L210"><span class="tok-kw">test</span> <span class="tok-str">"sizeof"</span> {</span>
<span class="line" id="L211"> <span class="tok-kw">const</span> S = <span class="tok-kw">extern</span> <span class="tok-kw">struct</span> { a: <span class="tok-type">u32</span> };</span>
<span class="line" id="L212"></span>
<span class="line" id="L213"> <span class="tok-kw">const</span> ptr_size = <span class="tok-builtin">@sizeOf</span>(*<span class="tok-type">anyopaque</span>);</span>
<span class="line" id="L214"></span>
<span class="line" id="L215"> <span class="tok-kw">try</span> testing.expect(sizeof(<span class="tok-type">u32</span>) == <span class="tok-number">4</span>);</span>
<span class="line" id="L216"> <span class="tok-kw">try</span> testing.expect(sizeof(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">2</span>)) == <span class="tok-number">4</span>);</span>
<span class="line" id="L217"> <span class="tok-kw">try</span> testing.expect(sizeof(<span class="tok-number">2</span>) == <span class="tok-builtin">@sizeOf</span>(<span class="tok-type">c_int</span>));</span>
<span class="line" id="L218"></span>
<span class="line" id="L219"> <span class="tok-kw">try</span> testing.expect(sizeof(<span class="tok-number">2.0</span>) == <span class="tok-builtin">@sizeOf</span>(<span class="tok-type">f64</span>));</span>
<span class="line" id="L220"></span>
<span class="line" id="L221"> <span class="tok-kw">try</span> testing.expect(sizeof(S) == <span class="tok-number">4</span>);</span>
<span class="line" id="L222"></span>
<span class="line" id="L223"> <span class="tok-kw">try</span> testing.expect(sizeof([_]<span class="tok-type">u32</span>{ <span class="tok-number">4</span>, <span class="tok-number">5</span>, <span class="tok-number">6</span> }) == <span class="tok-number">12</span>);</span>
<span class="line" id="L224"> <span class="tok-kw">try</span> testing.expect(sizeof([<span class="tok-number">3</span>]<span class="tok-type">u32</span>) == <span class="tok-number">12</span>);</span>
<span class="line" id="L225"> <span class="tok-kw">try</span> testing.expect(sizeof([<span class="tok-number">3</span>:<span class="tok-number">0</span>]<span class="tok-type">u32</span>) == <span class="tok-number">16</span>);</span>
<span class="line" id="L226"> <span class="tok-kw">try</span> testing.expect(sizeof(&[_]<span class="tok-type">u32</span>{ <span class="tok-number">4</span>, <span class="tok-number">5</span>, <span class="tok-number">6</span> }) == ptr_size);</span>
<span class="line" id="L227"></span>
<span class="line" id="L228"> <span class="tok-kw">try</span> testing.expect(sizeof(*<span class="tok-type">u32</span>) == ptr_size);</span>
<span class="line" id="L229"> <span class="tok-kw">try</span> testing.expect(sizeof([*]<span class="tok-type">u32</span>) == ptr_size);</span>
<span class="line" id="L230"> <span class="tok-kw">try</span> testing.expect(sizeof([*c]<span class="tok-type">u32</span>) == ptr_size);</span>
<span class="line" id="L231"> <span class="tok-kw">try</span> testing.expect(sizeof(?*<span class="tok-type">u32</span>) == ptr_size);</span>
<span class="line" id="L232"> <span class="tok-kw">try</span> testing.expect(sizeof(?[*]<span class="tok-type">u32</span>) == ptr_size);</span>
<span class="line" id="L233"> <span class="tok-kw">try</span> testing.expect(sizeof(*<span class="tok-type">anyopaque</span>) == ptr_size);</span>
<span class="line" id="L234"> <span class="tok-kw">try</span> testing.expect(sizeof(*<span class="tok-type">void</span>) == ptr_size);</span>
<span class="line" id="L235"> <span class="tok-kw">try</span> testing.expect(sizeof(<span class="tok-null">null</span>) == ptr_size);</span>
<span class="line" id="L236"></span>
<span class="line" id="L237"> <span class="tok-kw">try</span> testing.expect(sizeof(<span class="tok-str">"foobar"</span>) == <span class="tok-number">7</span>);</span>
<span class="line" id="L238"> <span class="tok-kw">try</span> testing.expect(sizeof(&[_:<span class="tok-number">0</span>]<span class="tok-type">u16</span>{ <span class="tok-str">'f'</span>, <span class="tok-str">'o'</span>, <span class="tok-str">'o'</span>, <span class="tok-str">'b'</span>, <span class="tok-str">'a'</span>, <span class="tok-str">'r'</span> }) == <span class="tok-number">14</span>);</span>
<span class="line" id="L239"> <span class="tok-kw">try</span> testing.expect(sizeof(*<span class="tok-kw">const</span> [<span class="tok-number">4</span>:<span class="tok-number">0</span>]<span class="tok-type">u8</span>) == <span class="tok-number">5</span>);</span>
<span class="line" id="L240"> <span class="tok-kw">try</span> testing.expect(sizeof(*[<span class="tok-number">4</span>:<span class="tok-number">0</span>]<span class="tok-type">u8</span>) == ptr_size);</span>
<span class="line" id="L241"> <span class="tok-kw">try</span> testing.expect(sizeof([*]<span class="tok-kw">const</span> [<span class="tok-number">4</span>:<span class="tok-number">0</span>]<span class="tok-type">u8</span>) == ptr_size);</span>
<span class="line" id="L242"> <span class="tok-kw">try</span> testing.expect(sizeof(*<span class="tok-kw">const</span> *<span class="tok-kw">const</span> [<span class="tok-number">4</span>:<span class="tok-number">0</span>]<span class="tok-type">u8</span>) == ptr_size);</span>
<span class="line" id="L243"> <span class="tok-kw">try</span> testing.expect(sizeof(*<span class="tok-kw">const</span> [<span class="tok-number">4</span>]<span class="tok-type">u8</span>) == ptr_size);</span>
<span class="line" id="L244"></span>
<span class="line" id="L245"> <span class="tok-kw">if</span> (<span class="tok-null">false</span>) { <span class="tok-comment">// TODO</span>
</span>
<span class="line" id="L246"> <span class="tok-kw">try</span> testing.expect(sizeof(&sizeof) == <span class="tok-builtin">@sizeOf</span>(<span class="tok-builtin">@TypeOf</span>(&sizeof)));</span>
<span class="line" id="L247"> <span class="tok-kw">try</span> testing.expect(sizeof(sizeof) == <span class="tok-number">1</span>);</span>
<span class="line" id="L248"> }</span>
<span class="line" id="L249"></span>
<span class="line" id="L250"> <span class="tok-kw">try</span> testing.expect(sizeof(<span class="tok-type">void</span>) == <span class="tok-number">1</span>);</span>
<span class="line" id="L251"> <span class="tok-kw">try</span> testing.expect(sizeof(<span class="tok-type">anyopaque</span>) == <span class="tok-number">1</span>);</span>
<span class="line" id="L252">}</span>
<span class="line" id="L253"></span>
<span class="line" id="L254"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> CIntLiteralBase = <span class="tok-kw">enum</span> { decimal, octal, hexadecimal };</span>
<span class="line" id="L255"></span>
<span class="line" id="L256"><span class="tok-comment">/// Deprecated: use `CIntLiteralBase`</span></span>
<span class="line" id="L257"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> CIntLiteralRadix = CIntLiteralBase;</span>
<span class="line" id="L258"></span>
<span class="line" id="L259"><span class="tok-kw">fn</span> <span class="tok-fn">PromoteIntLiteralReturnType</span>(<span class="tok-kw">comptime</span> SuffixType: <span class="tok-type">type</span>, <span class="tok-kw">comptime</span> number: <span class="tok-type">comptime_int</span>, <span class="tok-kw">comptime</span> base: CIntLiteralBase) <span class="tok-type">type</span> {</span>
<span class="line" id="L260"> <span class="tok-kw">const</span> signed_decimal = [_]<span class="tok-type">type</span>{ <span class="tok-type">c_int</span>, <span class="tok-type">c_long</span>, <span class="tok-type">c_longlong</span>, <span class="tok-type">c_ulonglong</span> };</span>
<span class="line" id="L261"> <span class="tok-kw">const</span> signed_oct_hex = [_]<span class="tok-type">type</span>{ <span class="tok-type">c_int</span>, <span class="tok-type">c_uint</span>, <span class="tok-type">c_long</span>, <span class="tok-type">c_ulong</span>, <span class="tok-type">c_longlong</span>, <span class="tok-type">c_ulonglong</span> };</span>
<span class="line" id="L262"> <span class="tok-kw">const</span> unsigned = [_]<span class="tok-type">type</span>{ <span class="tok-type">c_uint</span>, <span class="tok-type">c_ulong</span>, <span class="tok-type">c_ulonglong</span> };</span>
<span class="line" id="L263"></span>
<span class="line" id="L264"> <span class="tok-kw">const</span> list: []<span class="tok-kw">const</span> <span class="tok-type">type</span> = <span class="tok-kw">if</span> (<span class="tok-builtin">@typeInfo</span>(SuffixType).Int.signedness == .unsigned)</span>
<span class="line" id="L265"> &unsigned</span>
<span class="line" id="L266"> <span class="tok-kw">else</span> <span class="tok-kw">if</span> (base == .decimal)</span>
<span class="line" id="L267"> &signed_decimal</span>
<span class="line" id="L268"> <span class="tok-kw">else</span></span>
<span class="line" id="L269"> &signed_oct_hex;</span>
<span class="line" id="L270"></span>
<span class="line" id="L271"> <span class="tok-kw">var</span> pos = mem.indexOfScalar(<span class="tok-type">type</span>, list, SuffixType).?;</span>
<span class="line" id="L272"></span>
<span class="line" id="L273"> <span class="tok-kw">while</span> (pos < list.len) : (pos += <span class="tok-number">1</span>) {</span>
<span class="line" id="L274"> <span class="tok-kw">if</span> (number >= math.minInt(list[pos]) <span class="tok-kw">and</span> number <= math.maxInt(list[pos])) {</span>
<span class="line" id="L275"> <span class="tok-kw">return</span> list[pos];</span>
<span class="line" id="L276"> }</span>
<span class="line" id="L277"> }</span>
<span class="line" id="L278"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Integer literal is too large"</span>);</span>
<span class="line" id="L279">}</span>
<span class="line" id="L280"></span>
<span class="line" id="L281"><span class="tok-comment">/// Promote the type of an integer literal until it fits as C would.</span></span>
<span class="line" id="L282"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">promoteIntLiteral</span>(</span>
<span class="line" id="L283"> <span class="tok-kw">comptime</span> SuffixType: <span class="tok-type">type</span>,</span>
<span class="line" id="L284"> <span class="tok-kw">comptime</span> number: <span class="tok-type">comptime_int</span>,</span>
<span class="line" id="L285"> <span class="tok-kw">comptime</span> base: CIntLiteralBase,</span>
<span class="line" id="L286">) PromoteIntLiteralReturnType(SuffixType, number, base) {</span>
<span class="line" id="L287"> <span class="tok-kw">return</span> number;</span>
<span class="line" id="L288">}</span>
<span class="line" id="L289"></span>
<span class="line" id="L290"><span class="tok-kw">test</span> <span class="tok-str">"promoteIntLiteral"</span> {</span>
<span class="line" id="L291"> <span class="tok-kw">const</span> signed_hex = promoteIntLiteral(<span class="tok-type">c_int</span>, math.maxInt(<span class="tok-type">c_int</span>) + <span class="tok-number">1</span>, .hexadecimal);</span>
<span class="line" id="L292"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-type">c_uint</span>, <span class="tok-builtin">@TypeOf</span>(signed_hex));</span>
<span class="line" id="L293"></span>
<span class="line" id="L294"> <span class="tok-kw">if</span> (math.maxInt(<span class="tok-type">c_longlong</span>) == math.maxInt(<span class="tok-type">c_int</span>)) <span class="tok-kw">return</span>;</span>
<span class="line" id="L295"></span>
<span class="line" id="L296"> <span class="tok-kw">const</span> signed_decimal = promoteIntLiteral(<span class="tok-type">c_int</span>, math.maxInt(<span class="tok-type">c_int</span>) + <span class="tok-number">1</span>, .decimal);</span>
<span class="line" id="L297"> <span class="tok-kw">const</span> unsigned = promoteIntLiteral(<span class="tok-type">c_uint</span>, math.maxInt(<span class="tok-type">c_uint</span>) + <span class="tok-number">1</span>, .hexadecimal);</span>
<span class="line" id="L298"></span>
<span class="line" id="L299"> <span class="tok-kw">if</span> (math.maxInt(<span class="tok-type">c_long</span>) > math.maxInt(<span class="tok-type">c_int</span>)) {</span>
<span class="line" id="L300"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-type">c_long</span>, <span class="tok-builtin">@TypeOf</span>(signed_decimal));</span>
<span class="line" id="L301"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-type">c_ulong</span>, <span class="tok-builtin">@TypeOf</span>(unsigned));</span>
<span class="line" id="L302"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L303"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-type">c_longlong</span>, <span class="tok-builtin">@TypeOf</span>(signed_decimal));</span>
<span class="line" id="L304"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-type">c_ulonglong</span>, <span class="tok-builtin">@TypeOf</span>(unsigned));</span>
<span class="line" id="L305"> }</span>
<span class="line" id="L306">}</span>
<span class="line" id="L307"></span>
<span class="line" id="L308"><span class="tok-comment">/// Convert from clang __builtin_shufflevector index to Zig @shuffle index</span></span>
<span class="line" id="L309"><span class="tok-comment">/// clang requires __builtin_shufflevector index arguments to be integer constants.</span></span>
<span class="line" id="L310"><span class="tok-comment">/// negative values for `this_index` indicate "don't care" so we arbitrarily choose 0</span></span>
<span class="line" id="L311"><span class="tok-comment">/// clang enforces that `this_index` is less than the total number of vector elements</span></span>
<span class="line" id="L312"><span class="tok-comment">/// See https://ziglang.org/documentation/master/#shuffle</span></span>
<span class="line" id="L313"><span class="tok-comment">/// See https://clang.llvm.org/docs/LanguageExtensions.html#langext-builtin-shufflevector</span></span>
<span class="line" id="L314"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">shuffleVectorIndex</span>(<span class="tok-kw">comptime</span> this_index: <span class="tok-type">c_int</span>, <span class="tok-kw">comptime</span> source_vector_len: <span class="tok-type">usize</span>) <span class="tok-type">i32</span> {</span>
<span class="line" id="L315"> <span class="tok-kw">if</span> (this_index <= <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L316"></span>
<span class="line" id="L317"> <span class="tok-kw">const</span> positive_index = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(this_index));</span>
<span class="line" id="L318"> <span class="tok-kw">if</span> (positive_index < source_vector_len) <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(this_index));</span>
<span class="line" id="L319"> <span class="tok-kw">const</span> b_index = positive_index - source_vector_len;</span>
<span class="line" id="L320"> <span class="tok-kw">return</span> ~<span class="tok-builtin">@as</span>(<span class="tok-type">i32</span>, <span class="tok-builtin">@intCast</span>(b_index));</span>
<span class="line" id="L321">}</span>
<span class="line" id="L322"></span>
<span class="line" id="L323"><span class="tok-kw">test</span> <span class="tok-str">"shuffleVectorIndex"</span> {</span>
<span class="line" id="L324"> <span class="tok-kw">const</span> vector_len: <span class="tok-type">usize</span> = <span class="tok-number">4</span>;</span>
<span class="line" id="L325"></span>
<span class="line" id="L326"> <span class="tok-kw">try</span> testing.expect(shuffleVectorIndex(-<span class="tok-number">1</span>, vector_len) == <span class="tok-number">0</span>);</span>
<span class="line" id="L327"></span>
<span class="line" id="L328"> <span class="tok-kw">try</span> testing.expect(shuffleVectorIndex(<span class="tok-number">0</span>, vector_len) == <span class="tok-number">0</span>);</span>
<span class="line" id="L329"> <span class="tok-kw">try</span> testing.expect(shuffleVectorIndex(<span class="tok-number">1</span>, vector_len) == <span class="tok-number">1</span>);</span>
<span class="line" id="L330"> <span class="tok-kw">try</span> testing.expect(shuffleVectorIndex(<span class="tok-number">2</span>, vector_len) == <span class="tok-number">2</span>);</span>
<span class="line" id="L331"> <span class="tok-kw">try</span> testing.expect(shuffleVectorIndex(<span class="tok-number">3</span>, vector_len) == <span class="tok-number">3</span>);</span>
<span class="line" id="L332"></span>
<span class="line" id="L333"> <span class="tok-kw">try</span> testing.expect(shuffleVectorIndex(<span class="tok-number">4</span>, vector_len) == -<span class="tok-number">1</span>);</span>
<span class="line" id="L334"> <span class="tok-kw">try</span> testing.expect(shuffleVectorIndex(<span class="tok-number">5</span>, vector_len) == -<span class="tok-number">2</span>);</span>
<span class="line" id="L335"> <span class="tok-kw">try</span> testing.expect(shuffleVectorIndex(<span class="tok-number">6</span>, vector_len) == -<span class="tok-number">3</span>);</span>
<span class="line" id="L336"> <span class="tok-kw">try</span> testing.expect(shuffleVectorIndex(<span class="tok-number">7</span>, vector_len) == -<span class="tok-number">4</span>);</span>
<span class="line" id="L337">}</span>
<span class="line" id="L338"></span>
<span class="line" id="L339"><span class="tok-comment">/// Constructs a [*c] pointer with the const and volatile annotations</span></span>
<span class="line" id="L340"><span class="tok-comment">/// from SelfType for pointing to a C flexible array of ElementType.</span></span>
<span class="line" id="L341"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">FlexibleArrayType</span>(<span class="tok-kw">comptime</span> SelfType: <span class="tok-type">type</span>, <span class="tok-kw">comptime</span> ElementType: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L342"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(SelfType)) {</span>
<span class="line" id="L343"> .Pointer => |ptr| {</span>
<span class="line" id="L344"> <span class="tok-kw">return</span> <span class="tok-builtin">@Type</span>(.{ .Pointer = .{</span>
<span class="line" id="L345"> .size = .C,</span>
<span class="line" id="L346"> .is_const = ptr.is_const,</span>
<span class="line" id="L347"> .is_volatile = ptr.is_volatile,</span>
<span class="line" id="L348"> .alignment = <span class="tok-builtin">@alignOf</span>(ElementType),</span>
<span class="line" id="L349"> .address_space = .generic,</span>
<span class="line" id="L350"> .child = ElementType,</span>
<span class="line" id="L351"> .is_allowzero = <span class="tok-null">true</span>,</span>
<span class="line" id="L352"> .sentinel = <span class="tok-null">null</span>,</span>
<span class="line" id="L353"> } });</span>
<span class="line" id="L354"> },</span>
<span class="line" id="L355"> <span class="tok-kw">else</span> => |info| <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Invalid self type \""</span> ++ <span class="tok-builtin">@tagName</span>(info) ++ <span class="tok-str">"\" for flexible array getter: "</span> ++ <span class="tok-builtin">@typeName</span>(SelfType)),</span>
<span class="line" id="L356"> }</span>
<span class="line" id="L357">}</span>
<span class="line" id="L358"></span>
<span class="line" id="L359"><span class="tok-kw">test</span> <span class="tok-str">"Flexible Array Type"</span> {</span>
<span class="line" id="L360"> <span class="tok-kw">const</span> Container = <span class="tok-kw">extern</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L361"> size: <span class="tok-type">usize</span>,</span>
<span class="line" id="L362"> };</span>
<span class="line" id="L363"></span>
<span class="line" id="L364"> <span class="tok-kw">try</span> testing.expectEqual(FlexibleArrayType(*Container, <span class="tok-type">c_int</span>), [*c]<span class="tok-type">c_int</span>);</span>
<span class="line" id="L365"> <span class="tok-kw">try</span> testing.expectEqual(FlexibleArrayType(*<span class="tok-kw">const</span> Container, <span class="tok-type">c_int</span>), [*c]<span class="tok-kw">const</span> <span class="tok-type">c_int</span>);</span>
<span class="line" id="L366"> <span class="tok-kw">try</span> testing.expectEqual(FlexibleArrayType(*<span class="tok-kw">volatile</span> Container, <span class="tok-type">c_int</span>), [*c]<span class="tok-kw">volatile</span> <span class="tok-type">c_int</span>);</span>
<span class="line" id="L367"> <span class="tok-kw">try</span> testing.expectEqual(FlexibleArrayType(*<span class="tok-kw">const</span> <span class="tok-kw">volatile</span> Container, <span class="tok-type">c_int</span>), [*c]<span class="tok-kw">const</span> <span class="tok-kw">volatile</span> <span class="tok-type">c_int</span>);</span>
<span class="line" id="L368">}</span>
<span class="line" id="L369"></span>
<span class="line" id="L370"><span class="tok-comment">/// C `%` operator for signed integers</span></span>
<span class="line" id="L371"><span class="tok-comment">/// C standard states: "If the quotient a/b is representable, the expression (a/b)*b + a%b shall equal a"</span></span>
<span class="line" id="L372"><span class="tok-comment">/// The quotient is not representable if denominator is zero, or if numerator is the minimum integer for</span></span>
<span class="line" id="L373"><span class="tok-comment">/// the type and denominator is -1. C has undefined behavior for those two cases; this function has safety</span></span>
<span class="line" id="L374"><span class="tok-comment">/// checked undefined behavior</span></span>
<span class="line" id="L375"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">signedRemainder</span>(numerator: <span class="tok-kw">anytype</span>, denominator: <span class="tok-kw">anytype</span>) <span class="tok-builtin">@TypeOf</span>(numerator, denominator) {</span>
<span class="line" id="L376"> std.debug.assert(<span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(numerator, denominator)).Int.signedness == .signed);</span>
<span class="line" id="L377"> <span class="tok-kw">if</span> (denominator > <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-builtin">@rem</span>(numerator, denominator);</span>
<span class="line" id="L378"> <span class="tok-kw">return</span> numerator - <span class="tok-builtin">@divTrunc</span>(numerator, denominator) * denominator;</span>
<span class="line" id="L379">}</span>
<span class="line" id="L380"></span>
<span class="line" id="L381"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Macros = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L382"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">U_SUFFIX</span>(<span class="tok-kw">comptime</span> n: <span class="tok-type">comptime_int</span>) <span class="tok-builtin">@TypeOf</span>(promoteIntLiteral(<span class="tok-type">c_uint</span>, n, .decimal)) {</span>
<span class="line" id="L383"> <span class="tok-kw">return</span> promoteIntLiteral(<span class="tok-type">c_uint</span>, n, .decimal);</span>
<span class="line" id="L384"> }</span>
<span class="line" id="L385"></span>
<span class="line" id="L386"> <span class="tok-kw">fn</span> <span class="tok-fn">L_SUFFIX_ReturnType</span>(<span class="tok-kw">comptime</span> number: <span class="tok-kw">anytype</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L387"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@TypeOf</span>(number)) {</span>
<span class="line" id="L388"> <span class="tok-type">comptime_int</span> => <span class="tok-kw">return</span> <span class="tok-builtin">@TypeOf</span>(promoteIntLiteral(<span class="tok-type">c_long</span>, number, .decimal)),</span>
<span class="line" id="L389"> <span class="tok-type">comptime_float</span> => <span class="tok-kw">return</span> <span class="tok-type">c_longdouble</span>,</span>
<span class="line" id="L390"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Invalid value for L suffix"</span>),</span>
<span class="line" id="L391"> }</span>
<span class="line" id="L392"> }</span>
<span class="line" id="L393"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">L_SUFFIX</span>(<span class="tok-kw">comptime</span> number: <span class="tok-kw">anytype</span>) L_SUFFIX_ReturnType(number) {</span>
<span class="line" id="L394"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@TypeOf</span>(number)) {</span>
<span class="line" id="L395"> <span class="tok-type">comptime_int</span> => <span class="tok-kw">return</span> promoteIntLiteral(<span class="tok-type">c_long</span>, number, .decimal),</span>
<span class="line" id="L396"> <span class="tok-type">comptime_float</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"TODO: c_longdouble initialization from comptime_float not supported"</span>),</span>
<span class="line" id="L397"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Invalid value for L suffix"</span>),</span>
<span class="line" id="L398"> }</span>
<span class="line" id="L399"> }</span>
<span class="line" id="L400"></span>
<span class="line" id="L401"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">UL_SUFFIX</span>(<span class="tok-kw">comptime</span> n: <span class="tok-type">comptime_int</span>) <span class="tok-builtin">@TypeOf</span>(promoteIntLiteral(<span class="tok-type">c_ulong</span>, n, .decimal)) {</span>
<span class="line" id="L402"> <span class="tok-kw">return</span> promoteIntLiteral(<span class="tok-type">c_ulong</span>, n, .decimal);</span>
<span class="line" id="L403"> }</span>
<span class="line" id="L404"></span>
<span class="line" id="L405"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">LL_SUFFIX</span>(<span class="tok-kw">comptime</span> n: <span class="tok-type">comptime_int</span>) <span class="tok-builtin">@TypeOf</span>(promoteIntLiteral(<span class="tok-type">c_longlong</span>, n, .decimal)) {</span>
<span class="line" id="L406"> <span class="tok-kw">return</span> promoteIntLiteral(<span class="tok-type">c_longlong</span>, n, .decimal);</span>
<span class="line" id="L407"> }</span>
<span class="line" id="L408"></span>
<span class="line" id="L409"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">ULL_SUFFIX</span>(<span class="tok-kw">comptime</span> n: <span class="tok-type">comptime_int</span>) <span class="tok-builtin">@TypeOf</span>(promoteIntLiteral(<span class="tok-type">c_ulonglong</span>, n, .decimal)) {</span>
<span class="line" id="L410"> <span class="tok-kw">return</span> promoteIntLiteral(<span class="tok-type">c_ulonglong</span>, n, .decimal);</span>
<span class="line" id="L411"> }</span>
<span class="line" id="L412"></span>
<span class="line" id="L413"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">F_SUFFIX</span>(<span class="tok-kw">comptime</span> f: <span class="tok-type">comptime_float</span>) <span class="tok-type">f32</span> {</span>
<span class="line" id="L414"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">f32</span>, f);</span>
<span class="line" id="L415"> }</span>
<span class="line" id="L416"></span>
<span class="line" id="L417"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">WL_CONTAINER_OF</span>(ptr: <span class="tok-kw">anytype</span>, sample: <span class="tok-kw">anytype</span>, <span class="tok-kw">comptime</span> member: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-builtin">@TypeOf</span>(sample) {</span>
<span class="line" id="L418"> <span class="tok-kw">return</span> <span class="tok-builtin">@fieldParentPtr</span>(<span class="tok-builtin">@TypeOf</span>(sample.*), member, ptr);</span>
<span class="line" id="L419"> }</span>
<span class="line" id="L420"></span>
<span class="line" id="L421"> <span class="tok-comment">/// A 2-argument function-like macro defined as #define FOO(A, B) (A)(B)</span></span>
<span class="line" id="L422"> <span class="tok-comment">/// could be either: cast B to A, or call A with the value B.</span></span>
<span class="line" id="L423"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">CAST_OR_CALL</span>(a: <span class="tok-kw">anytype</span>, b: <span class="tok-kw">anytype</span>) <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(a))) {</span>
<span class="line" id="L424"> .Type => a,</span>
<span class="line" id="L425"> .Fn => |fn_info| fn_info.return_type <span class="tok-kw">orelse</span> <span class="tok-type">void</span>,</span>
<span class="line" id="L426"> <span class="tok-kw">else</span> => |info| <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Unexpected argument type: "</span> ++ <span class="tok-builtin">@tagName</span>(info)),</span>
<span class="line" id="L427"> } {</span>
<span class="line" id="L428"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(a))) {</span>
<span class="line" id="L429"> .Type => <span class="tok-kw">return</span> cast(a, b),</span>
<span class="line" id="L430"> .Fn => <span class="tok-kw">return</span> a(b),</span>
<span class="line" id="L431"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// return type will be a compile error otherwise</span>
</span>
<span class="line" id="L432"> }</span>
<span class="line" id="L433"> }</span>
<span class="line" id="L434"></span>
<span class="line" id="L435"> <span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">DISCARD</span>(x: <span class="tok-kw">anytype</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L436"> _ = x;</span>
<span class="line" id="L437"> }</span>
<span class="line" id="L438">};</span>
<span class="line" id="L439"></span>
<span class="line" id="L440"><span class="tok-comment">/// Integer promotion described in C11 6.3.1.1.2</span></span>
<span class="line" id="L441"><span class="tok-kw">fn</span> <span class="tok-fn">PromotedIntType</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L442"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (T) {</span>
<span class="line" id="L443"> <span class="tok-type">bool</span>, <span class="tok-type">u8</span>, <span class="tok-type">i8</span>, <span class="tok-type">c_short</span> => <span class="tok-type">c_int</span>,</span>
<span class="line" id="L444"> <span class="tok-type">c_ushort</span> => <span class="tok-kw">if</span> (<span class="tok-builtin">@sizeOf</span>(<span class="tok-type">c_ushort</span>) == <span class="tok-builtin">@sizeOf</span>(<span class="tok-type">c_int</span>)) <span class="tok-type">c_uint</span> <span class="tok-kw">else</span> <span class="tok-type">c_int</span>,</span>
<span class="line" id="L445"> <span class="tok-type">c_int</span>, <span class="tok-type">c_uint</span>, <span class="tok-type">c_long</span>, <span class="tok-type">c_ulong</span>, <span class="tok-type">c_longlong</span>, <span class="tok-type">c_ulonglong</span> => T,</span>
<span class="line" id="L446"> <span class="tok-kw">else</span> => <span class="tok-kw">if</span> (T == <span class="tok-type">comptime_int</span>) {</span>
<span class="line" id="L447"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Cannot promote `"</span> ++ <span class="tok-builtin">@typeName</span>(T) ++ <span class="tok-str">"`; a fixed-size number type is required"</span>);</span>
<span class="line" id="L448"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (<span class="tok-builtin">@typeInfo</span>(T) == .Int) {</span>
<span class="line" id="L449"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Cannot promote `"</span> ++ <span class="tok-builtin">@typeName</span>(T) ++ <span class="tok-str">"`; a C ABI type is required"</span>);</span>
<span class="line" id="L450"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L451"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Attempted to promote invalid type `"</span> ++ <span class="tok-builtin">@typeName</span>(T) ++ <span class="tok-str">"`"</span>);</span>
<span class="line" id="L452"> },</span>
<span class="line" id="L453"> };</span>
<span class="line" id="L454">}</span>
<span class="line" id="L455"></span>
<span class="line" id="L456"><span class="tok-comment">/// C11 6.3.1.1.1</span></span>
<span class="line" id="L457"><span class="tok-kw">fn</span> <span class="tok-fn">integerRank</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>) <span class="tok-type">u8</span> {</span>
<span class="line" id="L458"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (T) {</span>
<span class="line" id="L459"> <span class="tok-type">bool</span> => <span class="tok-number">0</span>,</span>
<span class="line" id="L460"> <span class="tok-type">u8</span>, <span class="tok-type">i8</span> => <span class="tok-number">1</span>,</span>
<span class="line" id="L461"> <span class="tok-type">c_short</span>, <span class="tok-type">c_ushort</span> => <span class="tok-number">2</span>,</span>
<span class="line" id="L462"> <span class="tok-type">c_int</span>, <span class="tok-type">c_uint</span> => <span class="tok-number">3</span>,</span>
<span class="line" id="L463"> <span class="tok-type">c_long</span>, <span class="tok-type">c_ulong</span> => <span class="tok-number">4</span>,</span>
<span class="line" id="L464"> <span class="tok-type">c_longlong</span>, <span class="tok-type">c_ulonglong</span> => <span class="tok-number">5</span>,</span>
<span class="line" id="L465"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"integer rank not supported for `"</span> ++ <span class="tok-builtin">@typeName</span>(T) ++ <span class="tok-str">"`"</span>),</span>
<span class="line" id="L466"> };</span>
<span class="line" id="L467">}</span>
<span class="line" id="L468"></span>
<span class="line" id="L469"><span class="tok-kw">fn</span> <span class="tok-fn">ToUnsigned</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L470"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (T) {</span>
<span class="line" id="L471"> <span class="tok-type">c_int</span> => <span class="tok-type">c_uint</span>,</span>
<span class="line" id="L472"> <span class="tok-type">c_long</span> => <span class="tok-type">c_ulong</span>,</span>
<span class="line" id="L473"> <span class="tok-type">c_longlong</span> => <span class="tok-type">c_ulonglong</span>,</span>
<span class="line" id="L474"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"Cannot convert `"</span> ++ <span class="tok-builtin">@typeName</span>(T) ++ <span class="tok-str">"` to unsigned"</span>),</span>
<span class="line" id="L475"> };</span>
<span class="line" id="L476">}</span>
<span class="line" id="L477"></span>
<span class="line" id="L478"><span class="tok-comment">/// "Usual arithmetic conversions" from C11 standard 6.3.1.8</span></span>
<span class="line" id="L479"><span class="tok-kw">fn</span> <span class="tok-fn">ArithmeticConversion</span>(<span class="tok-kw">comptime</span> A: <span class="tok-type">type</span>, <span class="tok-kw">comptime</span> B: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L480"> <span class="tok-kw">if</span> (A == <span class="tok-type">c_longdouble</span> <span class="tok-kw">or</span> B == <span class="tok-type">c_longdouble</span>) <span class="tok-kw">return</span> <span class="tok-type">c_longdouble</span>;</span>
<span class="line" id="L481"> <span class="tok-kw">if</span> (A == <span class="tok-type">f80</span> <span class="tok-kw">or</span> B == <span class="tok-type">f80</span>) <span class="tok-kw">return</span> <span class="tok-type">f80</span>;</span>
<span class="line" id="L482"> <span class="tok-kw">if</span> (A == <span class="tok-type">f64</span> <span class="tok-kw">or</span> B == <span class="tok-type">f64</span>) <span class="tok-kw">return</span> <span class="tok-type">f64</span>;</span>
<span class="line" id="L483"> <span class="tok-kw">if</span> (A == <span class="tok-type">f32</span> <span class="tok-kw">or</span> B == <span class="tok-type">f32</span>) <span class="tok-kw">return</span> <span class="tok-type">f32</span>;</span>
<span class="line" id="L484"></span>
<span class="line" id="L485"> <span class="tok-kw">const</span> A_Promoted = PromotedIntType(A);</span>
<span class="line" id="L486"> <span class="tok-kw">const</span> B_Promoted = PromotedIntType(B);</span>
<span class="line" id="L487"> <span class="tok-kw">comptime</span> {</span>
<span class="line" id="L488"> std.debug.assert(integerRank(A_Promoted) >= integerRank(<span class="tok-type">c_int</span>));</span>
<span class="line" id="L489"> std.debug.assert(integerRank(B_Promoted) >= integerRank(<span class="tok-type">c_int</span>));</span>
<span class="line" id="L490"> }</span>
<span class="line" id="L491"></span>
<span class="line" id="L492"> <span class="tok-kw">if</span> (A_Promoted == B_Promoted) <span class="tok-kw">return</span> A_Promoted;</span>
<span class="line" id="L493"></span>
<span class="line" id="L494"> <span class="tok-kw">const</span> a_signed = <span class="tok-builtin">@typeInfo</span>(A_Promoted).Int.signedness == .signed;</span>
<span class="line" id="L495"> <span class="tok-kw">const</span> b_signed = <span class="tok-builtin">@typeInfo</span>(B_Promoted).Int.signedness == .signed;</span>
<span class="line" id="L496"></span>
<span class="line" id="L497"> <span class="tok-kw">if</span> (a_signed == b_signed) {</span>
<span class="line" id="L498"> <span class="tok-kw">return</span> <span class="tok-kw">if</span> (integerRank(A_Promoted) > integerRank(B_Promoted)) A_Promoted <span class="tok-kw">else</span> B_Promoted;</span>
<span class="line" id="L499"> }</span>
<span class="line" id="L500"></span>
<span class="line" id="L501"> <span class="tok-kw">const</span> SignedType = <span class="tok-kw">if</span> (a_signed) A_Promoted <span class="tok-kw">else</span> B_Promoted;</span>
<span class="line" id="L502"> <span class="tok-kw">const</span> UnsignedType = <span class="tok-kw">if</span> (!a_signed) A_Promoted <span class="tok-kw">else</span> B_Promoted;</span>
<span class="line" id="L503"></span>
<span class="line" id="L504"> <span class="tok-kw">if</span> (integerRank(UnsignedType) >= integerRank(SignedType)) <span class="tok-kw">return</span> UnsignedType;</span>
<span class="line" id="L505"></span>
<span class="line" id="L506"> <span class="tok-kw">if</span> (std.math.maxInt(SignedType) >= std.math.maxInt(UnsignedType)) <span class="tok-kw">return</span> SignedType;</span>
<span class="line" id="L507"></span>
<span class="line" id="L508"> <span class="tok-kw">return</span> ToUnsigned(SignedType);</span>
<span class="line" id="L509">}</span>
<span class="line" id="L510"></span>
<span class="line" id="L511"><span class="tok-kw">test</span> <span class="tok-str">"ArithmeticConversion"</span> {</span>
<span class="line" id="L512"> <span class="tok-comment">// Promotions not necessarily the same for other platforms</span>
</span>
<span class="line" id="L513"> <span class="tok-kw">if</span> (builtin.target.cpu.arch != .x86_64 <span class="tok-kw">or</span> builtin.target.os.tag != .linux) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkipZigTest;</span>
<span class="line" id="L514"></span>
<span class="line" id="L515"> <span class="tok-kw">const</span> Test = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L516"> <span class="tok-comment">/// Order of operands should not matter for arithmetic conversions</span></span>
<span class="line" id="L517"> <span class="tok-kw">fn</span> <span class="tok-fn">checkPromotion</span>(<span class="tok-kw">comptime</span> A: <span class="tok-type">type</span>, <span class="tok-kw">comptime</span> B: <span class="tok-type">type</span>, <span class="tok-kw">comptime</span> Expected: <span class="tok-type">type</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L518"> <span class="tok-kw">try</span> std.testing.expect(ArithmeticConversion(A, B) == Expected);</span>
<span class="line" id="L519"> <span class="tok-kw">try</span> std.testing.expect(ArithmeticConversion(B, A) == Expected);</span>
<span class="line" id="L520"> }</span>
<span class="line" id="L521"> };</span>
<span class="line" id="L522"></span>
<span class="line" id="L523"> <span class="tok-kw">try</span> Test.checkPromotion(<span class="tok-type">c_longdouble</span>, <span class="tok-type">c_int</span>, <span class="tok-type">c_longdouble</span>);</span>
<span class="line" id="L524"> <span class="tok-kw">try</span> Test.checkPromotion(<span class="tok-type">c_int</span>, <span class="tok-type">f64</span>, <span class="tok-type">f64</span>);</span>
<span class="line" id="L525"> <span class="tok-kw">try</span> Test.checkPromotion(<span class="tok-type">f32</span>, <span class="tok-type">bool</span>, <span class="tok-type">f32</span>);</span>
<span class="line" id="L526"></span>
<span class="line" id="L527"> <span class="tok-kw">try</span> Test.checkPromotion(<span class="tok-type">bool</span>, <span class="tok-type">c_short</span>, <span class="tok-type">c_int</span>);</span>
<span class="line" id="L528"> <span class="tok-kw">try</span> Test.checkPromotion(<span class="tok-type">c_int</span>, <span class="tok-type">c_int</span>, <span class="tok-type">c_int</span>);</span>
<span class="line" id="L529"> <span class="tok-kw">try</span> Test.checkPromotion(<span class="tok-type">c_short</span>, <span class="tok-type">c_int</span>, <span class="tok-type">c_int</span>);</span>
<span class="line" id="L530"></span>
<span class="line" id="L531"> <span class="tok-kw">try</span> Test.checkPromotion(<span class="tok-type">c_int</span>, <span class="tok-type">c_long</span>, <span class="tok-type">c_long</span>);</span>
<span class="line" id="L532"></span>
<span class="line" id="L533"> <span class="tok-kw">try</span> Test.checkPromotion(<span class="tok-type">c_ulonglong</span>, <span class="tok-type">c_uint</span>, <span class="tok-type">c_ulonglong</span>);</span>
<span class="line" id="L534"></span>
<span class="line" id="L535"> <span class="tok-kw">try</span> Test.checkPromotion(<span class="tok-type">c_uint</span>, <span class="tok-type">c_int</span>, <span class="tok-type">c_uint</span>);</span>
<span class="line" id="L536"></span>
<span class="line" id="L537"> <span class="tok-kw">try</span> Test.checkPromotion(<span class="tok-type">c_uint</span>, <span class="tok-type">c_long</span>, <span class="tok-type">c_long</span>);</span>
<span class="line" id="L538"></span>
<span class="line" id="L539"> <span class="tok-kw">try</span> Test.checkPromotion(<span class="tok-type">c_ulong</span>, <span class="tok-type">c_longlong</span>, <span class="tok-type">c_ulonglong</span>);</span>
<span class="line" id="L540">}</span>
<span class="line" id="L541"></span>
<span class="line" id="L542"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> MacroArithmetic = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L543"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">div</span>(a: <span class="tok-kw">anytype</span>, b: <span class="tok-kw">anytype</span>) ArithmeticConversion(<span class="tok-builtin">@TypeOf</span>(a), <span class="tok-builtin">@TypeOf</span>(b)) {</span>
<span class="line" id="L544"> <span class="tok-kw">const</span> ResType = ArithmeticConversion(<span class="tok-builtin">@TypeOf</span>(a), <span class="tok-builtin">@TypeOf</span>(b));</span>
<span class="line" id="L545"> <span class="tok-kw">const</span> a_casted = cast(ResType, a);</span>
<span class="line" id="L546"> <span class="tok-kw">const</span> b_casted = cast(ResType, b);</span>
<span class="line" id="L547"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(ResType)) {</span>
<span class="line" id="L548"> .Float => <span class="tok-kw">return</span> a_casted / b_casted,</span>
<span class="line" id="L549"> .Int => <span class="tok-kw">return</span> <span class="tok-builtin">@divTrunc</span>(a_casted, b_casted),</span>
<span class="line" id="L550"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L551"> }</span>
<span class="line" id="L552"> }</span>
<span class="line" id="L553"></span>
<span class="line" id="L554"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">rem</span>(a: <span class="tok-kw">anytype</span>, b: <span class="tok-kw">anytype</span>) ArithmeticConversion(<span class="tok-builtin">@TypeOf</span>(a), <span class="tok-builtin">@TypeOf</span>(b)) {</span>
<span class="line" id="L555"> <span class="tok-kw">const</span> ResType = ArithmeticConversion(<span class="tok-builtin">@TypeOf</span>(a), <span class="tok-builtin">@TypeOf</span>(b));</span>
<span class="line" id="L556"> <span class="tok-kw">const</span> a_casted = cast(ResType, a);</span>
<span class="line" id="L557"> <span class="tok-kw">const</span> b_casted = cast(ResType, b);</span>
<span class="line" id="L558"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@typeInfo</span>(ResType)) {</span>
<span class="line" id="L559"> .Int => {</span>
<span class="line" id="L560"> <span class="tok-kw">if</span> (<span class="tok-builtin">@typeInfo</span>(ResType).Int.signedness == .signed) {</span>
<span class="line" id="L561"> <span class="tok-kw">return</span> signedRemainder(a_casted, b_casted);</span>
<span class="line" id="L562"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L563"> <span class="tok-kw">return</span> a_casted % b_casted;</span>
<span class="line" id="L564"> }</span>
<span class="line" id="L565"> },</span>
<span class="line" id="L566"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L567"> }</span>
<span class="line" id="L568"> }</span>
<span class="line" id="L569">};</span>
<span class="line" id="L570"></span>
<span class="line" id="L571"><span class="tok-kw">test</span> <span class="tok-str">"Macro suffix functions"</span> {</span>
<span class="line" id="L572"> <span class="tok-kw">try</span> testing.expect(<span class="tok-builtin">@TypeOf</span>(Macros.F_SUFFIX(<span class="tok-number">1</span>)) == <span class="tok-type">f32</span>);</span>
<span class="line" id="L573"></span>
<span class="line" id="L574"> <span class="tok-kw">try</span> testing.expect(<span class="tok-builtin">@TypeOf</span>(Macros.U_SUFFIX(<span class="tok-number">1</span>)) == <span class="tok-type">c_uint</span>);</span>
<span class="line" id="L575"> <span class="tok-kw">if</span> (math.maxInt(<span class="tok-type">c_ulong</span>) > math.maxInt(<span class="tok-type">c_uint</span>)) {</span>
<span class="line" id="L576"> <span class="tok-kw">try</span> testing.expect(<span class="tok-builtin">@TypeOf</span>(Macros.U_SUFFIX(math.maxInt(<span class="tok-type">c_uint</span>) + <span class="tok-number">1</span>)) == <span class="tok-type">c_ulong</span>);</span>
<span class="line" id="L577"> }</span>
<span class="line" id="L578"> <span class="tok-kw">if</span> (math.maxInt(<span class="tok-type">c_ulonglong</span>) > math.maxInt(<span class="tok-type">c_ulong</span>)) {</span>
<span class="line" id="L579"> <span class="tok-kw">try</span> testing.expect(<span class="tok-builtin">@TypeOf</span>(Macros.U_SUFFIX(math.maxInt(<span class="tok-type">c_ulong</span>) + <span class="tok-number">1</span>)) == <span class="tok-type">c_ulonglong</span>);</span>
<span class="line" id="L580"> }</span>
<span class="line" id="L581"></span>
<span class="line" id="L582"> <span class="tok-kw">try</span> testing.expect(<span class="tok-builtin">@TypeOf</span>(Macros.L_SUFFIX(<span class="tok-number">1</span>)) == <span class="tok-type">c_long</span>);</span>
<span class="line" id="L583"> <span class="tok-kw">if</span> (math.maxInt(<span class="tok-type">c_long</span>) > math.maxInt(<span class="tok-type">c_int</span>)) {</span>
<span class="line" id="L584"> <span class="tok-kw">try</span> testing.expect(<span class="tok-builtin">@TypeOf</span>(Macros.L_SUFFIX(math.maxInt(<span class="tok-type">c_int</span>) + <span class="tok-number">1</span>)) == <span class="tok-type">c_long</span>);</span>
<span class="line" id="L585"> }</span>
<span class="line" id="L586"> <span class="tok-kw">if</span> (math.maxInt(<span class="tok-type">c_longlong</span>) > math.maxInt(<span class="tok-type">c_long</span>)) {</span>
<span class="line" id="L587"> <span class="tok-kw">try</span> testing.expect(<span class="tok-builtin">@TypeOf</span>(Macros.L_SUFFIX(math.maxInt(<span class="tok-type">c_long</span>) + <span class="tok-number">1</span>)) == <span class="tok-type">c_longlong</span>);</span>
<span class="line" id="L588"> }</span>
<span class="line" id="L589"></span>
<span class="line" id="L590"> <span class="tok-kw">try</span> testing.expect(<span class="tok-builtin">@TypeOf</span>(Macros.UL_SUFFIX(<span class="tok-number">1</span>)) == <span class="tok-type">c_ulong</span>);</span>
<span class="line" id="L591"> <span class="tok-kw">if</span> (math.maxInt(<span class="tok-type">c_ulonglong</span>) > math.maxInt(<span class="tok-type">c_ulong</span>)) {</span>
<span class="line" id="L592"> <span class="tok-kw">try</span> testing.expect(<span class="tok-builtin">@TypeOf</span>(Macros.UL_SUFFIX(math.maxInt(<span class="tok-type">c_ulong</span>) + <span class="tok-number">1</span>)) == <span class="tok-type">c_ulonglong</span>);</span>
<span class="line" id="L593"> }</span>
<span class="line" id="L594"></span>
<span class="line" id="L595"> <span class="tok-kw">try</span> testing.expect(<span class="tok-builtin">@TypeOf</span>(Macros.LL_SUFFIX(<span class="tok-number">1</span>)) == <span class="tok-type">c_longlong</span>);</span>
<span class="line" id="L596"> <span class="tok-kw">try</span> testing.expect(<span class="tok-builtin">@TypeOf</span>(Macros.ULL_SUFFIX(<span class="tok-number">1</span>)) == <span class="tok-type">c_ulonglong</span>);</span>
<span class="line" id="L597">}</span>
<span class="line" id="L598"></span>
<span class="line" id="L599"><span class="tok-kw">test</span> <span class="tok-str">"WL_CONTAINER_OF"</span> {</span>
<span class="line" id="L600"> <span class="tok-kw">const</span> S = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L601"> a: <span class="tok-type">u32</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L602"> b: <span class="tok-type">u32</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L603"> };</span>
<span class="line" id="L604"> <span class="tok-kw">var</span> x = S{};</span>
<span class="line" id="L605"> <span class="tok-kw">var</span> y = S{};</span>
<span class="line" id="L606"> <span class="tok-kw">var</span> ptr = Macros.WL_CONTAINER_OF(&x.b, &y, <span class="tok-str">"b"</span>);</span>
<span class="line" id="L607"> <span class="tok-kw">try</span> testing.expectEqual(&x, ptr);</span>
<span class="line" id="L608">}</span>
<span class="line" id="L609"></span>
<span class="line" id="L610"><span class="tok-kw">test</span> <span class="tok-str">"CAST_OR_CALL casting"</span> {</span>
<span class="line" id="L611"> <span class="tok-kw">var</span> arg = <span class="tok-builtin">@as</span>(<span class="tok-type">c_int</span>, <span class="tok-number">1000</span>);</span>
<span class="line" id="L612"> <span class="tok-kw">var</span> casted = Macros.CAST_OR_CALL(<span class="tok-type">u8</span>, arg);</span>
<span class="line" id="L613"> <span class="tok-kw">try</span> testing.expectEqual(cast(<span class="tok-type">u8</span>, arg), casted);</span>
<span class="line" id="L614"></span>
<span class="line" id="L615"> <span class="tok-kw">const</span> S = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L616"> x: <span class="tok-type">u32</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L617"> };</span>
<span class="line" id="L618"> <span class="tok-kw">var</span> s = S{};</span>
<span class="line" id="L619"> <span class="tok-kw">var</span> casted_ptr = Macros.CAST_OR_CALL(*<span class="tok-type">u8</span>, &s);</span>
<span class="line" id="L620"> <span class="tok-kw">try</span> testing.expectEqual(cast(*<span class="tok-type">u8</span>, &s), casted_ptr);</span>
<span class="line" id="L621">}</span>
<span class="line" id="L622"></span>
<span class="line" id="L623"><span class="tok-kw">test</span> <span class="tok-str">"CAST_OR_CALL calling"</span> {</span>
<span class="line" id="L624"> <span class="tok-kw">const</span> Helper = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L625"> <span class="tok-kw">var</span> last_val: <span class="tok-type">bool</span> = <span class="tok-null">false</span>;</span>
<span class="line" id="L626"> <span class="tok-kw">fn</span> <span class="tok-fn">returnsVoid</span>(val: <span class="tok-type">bool</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L627"> last_val = val;</span>
<span class="line" id="L628"> }</span>
<span class="line" id="L629"> <span class="tok-kw">fn</span> <span class="tok-fn">returnsBool</span>(f: <span class="tok-type">f32</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L630"> <span class="tok-kw">return</span> f > <span class="tok-number">0</span>;</span>
<span class="line" id="L631"> }</span>
<span class="line" id="L632"> <span class="tok-kw">fn</span> <span class="tok-fn">identity</span>(self: <span class="tok-type">c_uint</span>) <span class="tok-type">c_uint</span> {</span>
<span class="line" id="L633"> <span class="tok-kw">return</span> self;</span>
<span class="line" id="L634"> }</span>
<span class="line" id="L635"> };</span>
<span class="line" id="L636"></span>
<span class="line" id="L637"> Macros.CAST_OR_CALL(Helper.returnsVoid, <span class="tok-null">true</span>);</span>
<span class="line" id="L638"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-null">true</span>, Helper.last_val);</span>
<span class="line" id="L639"> Macros.CAST_OR_CALL(Helper.returnsVoid, <span class="tok-null">false</span>);</span>
<span class="line" id="L640"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-null">false</span>, Helper.last_val);</span>
<span class="line" id="L641"></span>
<span class="line" id="L642"> <span class="tok-kw">try</span> testing.expectEqual(Helper.returnsBool(<span class="tok-number">1</span>), Macros.CAST_OR_CALL(Helper.returnsBool, <span class="tok-builtin">@as</span>(<span class="tok-type">f32</span>, <span class="tok-number">1</span>)));</span>
<span class="line" id="L643"> <span class="tok-kw">try</span> testing.expectEqual(Helper.returnsBool(-<span class="tok-number">1</span>), Macros.CAST_OR_CALL(Helper.returnsBool, <span class="tok-builtin">@as</span>(<span class="tok-type">f32</span>, -<span class="tok-number">1</span>)));</span>
<span class="line" id="L644"></span>
<span class="line" id="L645"> <span class="tok-kw">try</span> testing.expectEqual(Helper.identity(<span class="tok-builtin">@as</span>(<span class="tok-type">c_uint</span>, <span class="tok-number">100</span>)), Macros.CAST_OR_CALL(Helper.identity, <span class="tok-builtin">@as</span>(<span class="tok-type">c_uint</span>, <span class="tok-number">100</span>)));</span>
<span class="line" id="L646">}</span>
<span class="line" id="L647"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/zig/Client.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Message = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Header = <span class="tok-kw">extern</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3"> tag: Tag,</span>
<span class="line" id="L4"> <span class="tok-comment">/// Size of the body only; does not include this Header.</span></span>
<span class="line" id="L5"> bytes_len: <span class="tok-type">u32</span>,</span>
<span class="line" id="L6"> };</span>
<span class="line" id="L7"></span>
<span class="line" id="L8"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Tag = <span class="tok-kw">enum</span>(<span class="tok-type">u32</span>) {</span>
<span class="line" id="L9"> <span class="tok-comment">/// Tells the compiler to shut down cleanly.</span></span>
<span class="line" id="L10"> <span class="tok-comment">/// No body.</span></span>
<span class="line" id="L11"> exit,</span>
<span class="line" id="L12"> <span class="tok-comment">/// Tells the compiler to detect changes in source files and update the</span></span>
<span class="line" id="L13"> <span class="tok-comment">/// affected output compilation artifacts.</span></span>
<span class="line" id="L14"> <span class="tok-comment">/// If one of the compilation artifacts is an executable that is</span></span>
<span class="line" id="L15"> <span class="tok-comment">/// running as a child process, the compiler will wait for it to exit</span></span>
<span class="line" id="L16"> <span class="tok-comment">/// before performing the update.</span></span>
<span class="line" id="L17"> <span class="tok-comment">/// No body.</span></span>
<span class="line" id="L18"> update,</span>
<span class="line" id="L19"> <span class="tok-comment">/// Tells the compiler to execute the executable as a child process.</span></span>
<span class="line" id="L20"> <span class="tok-comment">/// No body.</span></span>
<span class="line" id="L21"> run,</span>
<span class="line" id="L22"> <span class="tok-comment">/// Tells the compiler to detect changes in source files and update the</span></span>
<span class="line" id="L23"> <span class="tok-comment">/// affected output compilation artifacts.</span></span>
<span class="line" id="L24"> <span class="tok-comment">/// If one of the compilation artifacts is an executable that is</span></span>
<span class="line" id="L25"> <span class="tok-comment">/// running as a child process, the compiler will perform a hot code</span></span>
<span class="line" id="L26"> <span class="tok-comment">/// swap.</span></span>
<span class="line" id="L27"> <span class="tok-comment">/// No body.</span></span>
<span class="line" id="L28"> hot_update,</span>
<span class="line" id="L29"> <span class="tok-comment">/// Ask the test runner for metadata about all the unit tests that can</span></span>
<span class="line" id="L30"> <span class="tok-comment">/// be run. Server will respond with a `test_metadata` message.</span></span>
<span class="line" id="L31"> <span class="tok-comment">/// No body.</span></span>
<span class="line" id="L32"> query_test_metadata,</span>
<span class="line" id="L33"> <span class="tok-comment">/// Ask the test runner to run a particular test.</span></span>
<span class="line" id="L34"> <span class="tok-comment">/// The message body is a u32 test index.</span></span>
<span class="line" id="L35"> run_test,</span>
<span class="line" id="L36"></span>
<span class="line" id="L37"> _,</span>
<span class="line" id="L38"> };</span>
<span class="line" id="L39">};</span>
<span class="line" id="L40"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/zig/number_literal.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> utf8Decode = std.unicode.utf8Decode;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> utf8Encode = std.unicode.utf8Encode;</span>
<span class="line" id="L5"></span>
<span class="line" id="L6"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ParseError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L7"> OutOfMemory,</span>
<span class="line" id="L8"> InvalidLiteral,</span>
<span class="line" id="L9">};</span>
<span class="line" id="L10"></span>
<span class="line" id="L11"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Base = <span class="tok-kw">enum</span>(<span class="tok-type">u8</span>) { decimal = <span class="tok-number">10</span>, hex = <span class="tok-number">16</span>, binary = <span class="tok-number">2</span>, octal = <span class="tok-number">8</span> };</span>
<span class="line" id="L12"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> FloatBase = <span class="tok-kw">enum</span>(<span class="tok-type">u8</span>) { decimal = <span class="tok-number">10</span>, hex = <span class="tok-number">16</span> };</span>
<span class="line" id="L13"></span>
<span class="line" id="L14"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Result = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L15"> <span class="tok-comment">/// Result fits if it fits in u64</span></span>
<span class="line" id="L16"> int: <span class="tok-type">u64</span>,</span>
<span class="line" id="L17"> <span class="tok-comment">/// Result is an int that doesn't fit in u64. Payload is the base, if it is</span></span>
<span class="line" id="L18"> <span class="tok-comment">/// not `.decimal` then the slice has a two character prefix.</span></span>
<span class="line" id="L19"> big_int: Base,</span>
<span class="line" id="L20"> <span class="tok-comment">/// Result is a float. Payload is the base, if it is not `.decimal` then</span></span>
<span class="line" id="L21"> <span class="tok-comment">/// the slice has a two character prefix.</span></span>
<span class="line" id="L22"> float: FloatBase,</span>
<span class="line" id="L23"> failure: Error,</span>
<span class="line" id="L24">};</span>
<span class="line" id="L25"></span>
<span class="line" id="L26"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L27"> <span class="tok-comment">/// The number has leading zeroes.</span></span>
<span class="line" id="L28"> leading_zero,</span>
<span class="line" id="L29"> <span class="tok-comment">/// Expected a digit after base prefix.</span></span>
<span class="line" id="L30"> digit_after_base,</span>
<span class="line" id="L31"> <span class="tok-comment">/// The base prefix is in uppercase.</span></span>
<span class="line" id="L32"> upper_case_base: <span class="tok-type">usize</span>,</span>
<span class="line" id="L33"> <span class="tok-comment">/// Float literal has an invalid base prefix.</span></span>
<span class="line" id="L34"> invalid_float_base: <span class="tok-type">usize</span>,</span>
<span class="line" id="L35"> <span class="tok-comment">/// Repeated '_' digit separator.</span></span>
<span class="line" id="L36"> repeated_underscore: <span class="tok-type">usize</span>,</span>
<span class="line" id="L37"> <span class="tok-comment">/// '_' digit separator after special character (+-.)</span></span>
<span class="line" id="L38"> invalid_underscore_after_special: <span class="tok-type">usize</span>,</span>
<span class="line" id="L39"> <span class="tok-comment">/// Invalid digit for the specified base.</span></span>
<span class="line" id="L40"> invalid_digit: <span class="tok-kw">struct</span> { i: <span class="tok-type">usize</span>, base: Base },</span>
<span class="line" id="L41"> <span class="tok-comment">/// Invalid digit for an exponent.</span></span>
<span class="line" id="L42"> invalid_digit_exponent: <span class="tok-type">usize</span>,</span>
<span class="line" id="L43"> <span class="tok-comment">/// Float literal has multiple periods.</span></span>
<span class="line" id="L44"> duplicate_period,</span>
<span class="line" id="L45"> <span class="tok-comment">/// Float literal has multiple exponents.</span></span>
<span class="line" id="L46"> duplicate_exponent: <span class="tok-type">usize</span>,</span>
<span class="line" id="L47"> <span class="tok-comment">/// Exponent comes directly after '_' digit separator.</span></span>
<span class="line" id="L48"> exponent_after_underscore: <span class="tok-type">usize</span>,</span>
<span class="line" id="L49"> <span class="tok-comment">/// Special character (+-.) comes directly after exponent.</span></span>
<span class="line" id="L50"> special_after_underscore: <span class="tok-type">usize</span>,</span>
<span class="line" id="L51"> <span class="tok-comment">/// Number ends in special character (+-.)</span></span>
<span class="line" id="L52"> trailing_special: <span class="tok-type">usize</span>,</span>
<span class="line" id="L53"> <span class="tok-comment">/// Number ends in '_' digit separator.</span></span>
<span class="line" id="L54"> trailing_underscore: <span class="tok-type">usize</span>,</span>
<span class="line" id="L55"> <span class="tok-comment">/// Character not in [0-9a-zA-Z.+-_]</span></span>
<span class="line" id="L56"> invalid_character: <span class="tok-type">usize</span>,</span>
<span class="line" id="L57"> <span class="tok-comment">/// [+-] not immediately after [pPeE]</span></span>
<span class="line" id="L58"> invalid_exponent_sign: <span class="tok-type">usize</span>,</span>
<span class="line" id="L59">};</span>
<span class="line" id="L60"></span>
<span class="line" id="L61"><span class="tok-comment">/// Parse Zig number literal accepted by fmt.parseInt, fmt.parseFloat and big_int.setString.</span></span>
<span class="line" id="L62"><span class="tok-comment">/// Valid for any input.</span></span>
<span class="line" id="L63"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parseNumberLiteral</span>(bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) Result {</span>
<span class="line" id="L64"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L65"> <span class="tok-kw">var</span> base: <span class="tok-type">u8</span> = <span class="tok-number">10</span>;</span>
<span class="line" id="L66"> <span class="tok-kw">if</span> (bytes.len >= <span class="tok-number">2</span> <span class="tok-kw">and</span> bytes[<span class="tok-number">0</span>] == <span class="tok-str">'0'</span>) <span class="tok-kw">switch</span> (bytes[<span class="tok-number">1</span>]) {</span>
<span class="line" id="L67"> <span class="tok-str">'b'</span> => {</span>
<span class="line" id="L68"> base = <span class="tok-number">2</span>;</span>
<span class="line" id="L69"> i = <span class="tok-number">2</span>;</span>
<span class="line" id="L70"> },</span>
<span class="line" id="L71"> <span class="tok-str">'o'</span> => {</span>
<span class="line" id="L72"> base = <span class="tok-number">8</span>;</span>
<span class="line" id="L73"> i = <span class="tok-number">2</span>;</span>
<span class="line" id="L74"> },</span>
<span class="line" id="L75"> <span class="tok-str">'x'</span> => {</span>
<span class="line" id="L76"> base = <span class="tok-number">16</span>;</span>
<span class="line" id="L77"> i = <span class="tok-number">2</span>;</span>
<span class="line" id="L78"> },</span>
<span class="line" id="L79"> <span class="tok-str">'B'</span>, <span class="tok-str">'O'</span>, <span class="tok-str">'X'</span> => <span class="tok-kw">return</span> .{ .failure = .{ .upper_case_base = <span class="tok-number">1</span> } },</span>
<span class="line" id="L80"> <span class="tok-str">'.'</span>, <span class="tok-str">'e'</span>, <span class="tok-str">'E'</span> => {},</span>
<span class="line" id="L81"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> .{ .failure = .leading_zero },</span>
<span class="line" id="L82"> };</span>
<span class="line" id="L83"> <span class="tok-kw">if</span> (bytes.len == <span class="tok-number">2</span> <span class="tok-kw">and</span> base != <span class="tok-number">10</span>) <span class="tok-kw">return</span> .{ .failure = .digit_after_base };</span>
<span class="line" id="L84"></span>
<span class="line" id="L85"> <span class="tok-kw">var</span> x: <span class="tok-type">u64</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L86"> <span class="tok-kw">var</span> overflow = <span class="tok-null">false</span>;</span>
<span class="line" id="L87"> <span class="tok-kw">var</span> underscore = <span class="tok-null">false</span>;</span>
<span class="line" id="L88"> <span class="tok-kw">var</span> period = <span class="tok-null">false</span>;</span>
<span class="line" id="L89"> <span class="tok-kw">var</span> special: <span class="tok-type">u8</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L90"> <span class="tok-kw">var</span> exponent = <span class="tok-null">false</span>;</span>
<span class="line" id="L91"> <span class="tok-kw">var</span> float = <span class="tok-null">false</span>;</span>
<span class="line" id="L92"> <span class="tok-kw">while</span> (i < bytes.len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L93"> <span class="tok-kw">const</span> c = bytes[i];</span>
<span class="line" id="L94"> <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L95"> <span class="tok-str">'_'</span> => {</span>
<span class="line" id="L96"> <span class="tok-kw">if</span> (i == <span class="tok-number">2</span> <span class="tok-kw">and</span> base != <span class="tok-number">10</span>) <span class="tok-kw">return</span> .{ .failure = .{ .invalid_underscore_after_special = i } };</span>
<span class="line" id="L97"> <span class="tok-kw">if</span> (special != <span class="tok-number">0</span>) <span class="tok-kw">return</span> .{ .failure = .{ .invalid_underscore_after_special = i } };</span>
<span class="line" id="L98"> <span class="tok-kw">if</span> (underscore) <span class="tok-kw">return</span> .{ .failure = .{ .repeated_underscore = i } };</span>
<span class="line" id="L99"> underscore = <span class="tok-null">true</span>;</span>
<span class="line" id="L100"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L101"> },</span>
<span class="line" id="L102"> <span class="tok-str">'e'</span>, <span class="tok-str">'E'</span> => <span class="tok-kw">if</span> (base == <span class="tok-number">10</span>) {</span>
<span class="line" id="L103"> float = <span class="tok-null">true</span>;</span>
<span class="line" id="L104"> <span class="tok-kw">if</span> (exponent) <span class="tok-kw">return</span> .{ .failure = .{ .duplicate_exponent = i } };</span>
<span class="line" id="L105"> <span class="tok-kw">if</span> (underscore) <span class="tok-kw">return</span> .{ .failure = .{ .exponent_after_underscore = i } };</span>
<span class="line" id="L106"> special = c;</span>
<span class="line" id="L107"> exponent = <span class="tok-null">true</span>;</span>
<span class="line" id="L108"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L109"> },</span>
<span class="line" id="L110"> <span class="tok-str">'p'</span>, <span class="tok-str">'P'</span> => <span class="tok-kw">if</span> (base == <span class="tok-number">16</span>) {</span>
<span class="line" id="L111"> float = <span class="tok-null">true</span>;</span>
<span class="line" id="L112"> <span class="tok-kw">if</span> (exponent) <span class="tok-kw">return</span> .{ .failure = .{ .duplicate_exponent = i } };</span>
<span class="line" id="L113"> <span class="tok-kw">if</span> (underscore) <span class="tok-kw">return</span> .{ .failure = .{ .exponent_after_underscore = i } };</span>
<span class="line" id="L114"> special = c;</span>
<span class="line" id="L115"> exponent = <span class="tok-null">true</span>;</span>
<span class="line" id="L116"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L117"> },</span>
<span class="line" id="L118"> <span class="tok-str">'.'</span> => {</span>
<span class="line" id="L119"> float = <span class="tok-null">true</span>;</span>
<span class="line" id="L120"> <span class="tok-kw">if</span> (base != <span class="tok-number">10</span> <span class="tok-kw">and</span> base != <span class="tok-number">16</span>) <span class="tok-kw">return</span> .{ .failure = .{ .invalid_float_base = <span class="tok-number">2</span> } };</span>
<span class="line" id="L121"> <span class="tok-kw">if</span> (period) <span class="tok-kw">return</span> .{ .failure = .duplicate_period };</span>
<span class="line" id="L122"> period = <span class="tok-null">true</span>;</span>
<span class="line" id="L123"> <span class="tok-kw">if</span> (underscore) <span class="tok-kw">return</span> .{ .failure = .{ .special_after_underscore = i } };</span>
<span class="line" id="L124"> special = c;</span>
<span class="line" id="L125"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L126"> },</span>
<span class="line" id="L127"> <span class="tok-str">'+'</span>, <span class="tok-str">'-'</span> => {</span>
<span class="line" id="L128"> <span class="tok-kw">switch</span> (special) {</span>
<span class="line" id="L129"> <span class="tok-str">'p'</span>, <span class="tok-str">'P'</span> => {},</span>
<span class="line" id="L130"> <span class="tok-str">'e'</span>, <span class="tok-str">'E'</span> => <span class="tok-kw">if</span> (base != <span class="tok-number">10</span>) <span class="tok-kw">return</span> .{ .failure = .{ .invalid_exponent_sign = i } },</span>
<span class="line" id="L131"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> .{ .failure = .{ .invalid_exponent_sign = i } },</span>
<span class="line" id="L132"> }</span>
<span class="line" id="L133"> special = c;</span>
<span class="line" id="L134"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L135"> },</span>
<span class="line" id="L136"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L137"> }</span>
<span class="line" id="L138"> <span class="tok-kw">const</span> digit = <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L139"> <span class="tok-str">'0'</span>...<span class="tok-str">'9'</span> => c - <span class="tok-str">'0'</span>,</span>
<span class="line" id="L140"> <span class="tok-str">'A'</span>...<span class="tok-str">'Z'</span> => c - <span class="tok-str">'A'</span> + <span class="tok-number">10</span>,</span>
<span class="line" id="L141"> <span class="tok-str">'a'</span>...<span class="tok-str">'z'</span> => c - <span class="tok-str">'a'</span> + <span class="tok-number">10</span>,</span>
<span class="line" id="L142"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> .{ .failure = .{ .invalid_character = i } },</span>
<span class="line" id="L143"> };</span>
<span class="line" id="L144"> <span class="tok-kw">if</span> (digit >= base) <span class="tok-kw">return</span> .{ .failure = .{ .invalid_digit = .{ .i = i, .base = <span class="tok-builtin">@as</span>(Base, <span class="tok-builtin">@enumFromInt</span>(base)) } } };</span>
<span class="line" id="L145"> <span class="tok-kw">if</span> (exponent <span class="tok-kw">and</span> digit >= <span class="tok-number">10</span>) <span class="tok-kw">return</span> .{ .failure = .{ .invalid_digit_exponent = i } };</span>
<span class="line" id="L146"> underscore = <span class="tok-null">false</span>;</span>
<span class="line" id="L147"> special = <span class="tok-number">0</span>;</span>
<span class="line" id="L148"></span>
<span class="line" id="L149"> <span class="tok-kw">if</span> (float) <span class="tok-kw">continue</span>;</span>
<span class="line" id="L150"> <span class="tok-kw">if</span> (x != <span class="tok-number">0</span>) {</span>
<span class="line" id="L151"> <span class="tok-kw">const</span> res = <span class="tok-builtin">@mulWithOverflow</span>(x, base);</span>
<span class="line" id="L152"> <span class="tok-kw">if</span> (res[<span class="tok-number">1</span>] != <span class="tok-number">0</span>) overflow = <span class="tok-null">true</span>;</span>
<span class="line" id="L153"> x = res[<span class="tok-number">0</span>];</span>
<span class="line" id="L154"> }</span>
<span class="line" id="L155"> <span class="tok-kw">const</span> res = <span class="tok-builtin">@addWithOverflow</span>(x, digit);</span>
<span class="line" id="L156"> <span class="tok-kw">if</span> (res[<span class="tok-number">1</span>] != <span class="tok-number">0</span>) overflow = <span class="tok-null">true</span>;</span>
<span class="line" id="L157"> x = res[<span class="tok-number">0</span>];</span>
<span class="line" id="L158"> }</span>
<span class="line" id="L159"> <span class="tok-kw">if</span> (underscore) <span class="tok-kw">return</span> .{ .failure = .{ .trailing_underscore = bytes.len - <span class="tok-number">1</span> } };</span>
<span class="line" id="L160"> <span class="tok-kw">if</span> (special != <span class="tok-number">0</span>) <span class="tok-kw">return</span> .{ .failure = .{ .trailing_special = bytes.len - <span class="tok-number">1</span> } };</span>
<span class="line" id="L161"></span>
<span class="line" id="L162"> <span class="tok-kw">if</span> (float) <span class="tok-kw">return</span> .{ .float = <span class="tok-builtin">@as</span>(FloatBase, <span class="tok-builtin">@enumFromInt</span>(base)) };</span>
<span class="line" id="L163"> <span class="tok-kw">if</span> (overflow) <span class="tok-kw">return</span> .{ .big_int = <span class="tok-builtin">@as</span>(Base, <span class="tok-builtin">@enumFromInt</span>(base)) };</span>
<span class="line" id="L164"> <span class="tok-kw">return</span> .{ .int = x };</span>
<span class="line" id="L165">}</span>
<span class="line" id="L166"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-comment">/// Set of primitive type and value names.</span></span>
<span class="line" id="L4"><span class="tok-comment">/// Does not include `_` or integer type names.</span></span>
<span class="line" id="L5"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> names = std.ComptimeStringMap(<span class="tok-type">void</span>, .{</span>
<span class="line" id="L6"> .{<span class="tok-str">"anyerror"</span>},</span>
<span class="line" id="L7"> .{<span class="tok-str">"anyframe"</span>},</span>
<span class="line" id="L8"> .{<span class="tok-str">"anyopaque"</span>},</span>
<span class="line" id="L9"> .{<span class="tok-str">"bool"</span>},</span>
<span class="line" id="L10"> .{<span class="tok-str">"c_int"</span>},</span>
<span class="line" id="L11"> .{<span class="tok-str">"c_long"</span>},</span>
<span class="line" id="L12"> .{<span class="tok-str">"c_longdouble"</span>},</span>
<span class="line" id="L13"> .{<span class="tok-str">"c_longlong"</span>},</span>
<span class="line" id="L14"> .{<span class="tok-str">"c_char"</span>},</span>
<span class="line" id="L15"> .{<span class="tok-str">"c_short"</span>},</span>
<span class="line" id="L16"> .{<span class="tok-str">"c_uint"</span>},</span>
<span class="line" id="L17"> .{<span class="tok-str">"c_ulong"</span>},</span>
<span class="line" id="L18"> .{<span class="tok-str">"c_ulonglong"</span>},</span>
<span class="line" id="L19"> .{<span class="tok-str">"c_ushort"</span>},</span>
<span class="line" id="L20"> .{<span class="tok-str">"comptime_float"</span>},</span>
<span class="line" id="L21"> .{<span class="tok-str">"comptime_int"</span>},</span>
<span class="line" id="L22"> .{<span class="tok-str">"f128"</span>},</span>
<span class="line" id="L23"> .{<span class="tok-str">"f16"</span>},</span>
<span class="line" id="L24"> .{<span class="tok-str">"f32"</span>},</span>
<span class="line" id="L25"> .{<span class="tok-str">"f64"</span>},</span>
<span class="line" id="L26"> .{<span class="tok-str">"f80"</span>},</span>
<span class="line" id="L27"> .{<span class="tok-str">"false"</span>},</span>
<span class="line" id="L28"> .{<span class="tok-str">"isize"</span>},</span>
<span class="line" id="L29"> .{<span class="tok-str">"noreturn"</span>},</span>
<span class="line" id="L30"> .{<span class="tok-str">"null"</span>},</span>
<span class="line" id="L31"> .{<span class="tok-str">"true"</span>},</span>
<span class="line" id="L32"> .{<span class="tok-str">"type"</span>},</span>
<span class="line" id="L33"> .{<span class="tok-str">"undefined"</span>},</span>
<span class="line" id="L34"> .{<span class="tok-str">"usize"</span>},</span>
<span class="line" id="L35"> .{<span class="tok-str">"void"</span>},</span>
<span class="line" id="L36">});</span>
<span class="line" id="L37"></span>
<span class="line" id="L38"><span class="tok-comment">/// Returns true if a name matches a primitive type or value, excluding `_`.</span></span>
<span class="line" id="L39"><span class="tok-comment">/// Integer type names like `u8` or `i32` are only matched for syntax,</span></span>
<span class="line" id="L40"><span class="tok-comment">/// so this will still return true when they have an oversized bit count</span></span>
<span class="line" id="L41"><span class="tok-comment">/// or leading zeroes.</span></span>
<span class="line" id="L42"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isPrimitive</span>(name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L43"> <span class="tok-kw">if</span> (names.get(name) != <span class="tok-null">null</span>) <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L44"> <span class="tok-kw">if</span> (name.len < <span class="tok-number">2</span>) <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L45"> <span class="tok-kw">const</span> first_c = name[<span class="tok-number">0</span>];</span>
<span class="line" id="L46"> <span class="tok-kw">if</span> (first_c != <span class="tok-str">'i'</span> <span class="tok-kw">and</span> first_c != <span class="tok-str">'u'</span>) <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L47"> <span class="tok-kw">for</span> (name[<span class="tok-number">1</span>..]) |c| <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L48"> <span class="tok-str">'0'</span>...<span class="tok-str">'9'</span> => {},</span>
<span class="line" id="L49"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-null">false</span>,</span>
<span class="line" id="L50"> };</span>
<span class="line" id="L51"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L52">}</span>
<span class="line" id="L53"></span>
<span class="line" id="L54"><span class="tok-kw">test</span> <span class="tok-str">"isPrimitive"</span> {</span>
<span class="line" id="L55"> <span class="tok-kw">const</span> expect = std.testing.expect;</span>
<span class="line" id="L56"> <span class="tok-kw">try</span> expect(!isPrimitive(<span class="tok-str">""</span>));</span>
<span class="line" id="L57"> <span class="tok-kw">try</span> expect(!isPrimitive(<span class="tok-str">"_"</span>));</span>
<span class="line" id="L58"> <span class="tok-kw">try</span> expect(!isPrimitive(<span class="tok-str">"haberdasher"</span>));</span>
<span class="line" id="L59"> <span class="tok-kw">try</span> expect(isPrimitive(<span class="tok-str">"bool"</span>));</span>
<span class="line" id="L60"> <span class="tok-kw">try</span> expect(isPrimitive(<span class="tok-str">"false"</span>));</span>
<span class="line" id="L61"> <span class="tok-kw">try</span> expect(isPrimitive(<span class="tok-str">"comptime_float"</span>));</span>
<span class="line" id="L62"> <span class="tok-kw">try</span> expect(isPrimitive(<span class="tok-str">"u1"</span>));</span>
<span class="line" id="L63"> <span class="tok-kw">try</span> expect(isPrimitive(<span class="tok-str">"i99999999999999"</span>));</span>
<span class="line" id="L64">}</span>
<span class="line" id="L65"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/zig/CrossTarget.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! Contains all the same data as `Target`, additionally introducing the concept of "the native target".</span></span>
<span class="line" id="L2"><span class="tok-comment">//! The purpose of this abstraction is to provide meaningful and unsurprising defaults.</span></span>
<span class="line" id="L3"><span class="tok-comment">//! This struct does reference any resources and it is copyable.</span></span>
<span class="line" id="L4"></span>
<span class="line" id="L5"><span class="tok-kw">const</span> CrossTarget = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L6"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L7"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L8"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L9"><span class="tok-kw">const</span> Target = std.Target;</span>
<span class="line" id="L10"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"><span class="tok-comment">/// `null` means native.</span></span>
<span class="line" id="L13">cpu_arch: ?Target.Cpu.Arch = <span class="tok-null">null</span>,</span>
<span class="line" id="L14"></span>
<span class="line" id="L15">cpu_model: CpuModel = CpuModel.determined_by_cpu_arch,</span>
<span class="line" id="L16"></span>
<span class="line" id="L17"><span class="tok-comment">/// Sparse set of CPU features to add to the set from `cpu_model`.</span></span>
<span class="line" id="L18">cpu_features_add: Target.Cpu.Feature.Set = Target.Cpu.Feature.Set.empty,</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"><span class="tok-comment">/// Sparse set of CPU features to remove from the set from `cpu_model`.</span></span>
<span class="line" id="L21">cpu_features_sub: Target.Cpu.Feature.Set = Target.Cpu.Feature.Set.empty,</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"><span class="tok-comment">/// `null` means native.</span></span>
<span class="line" id="L24">os_tag: ?Target.Os.Tag = <span class="tok-null">null</span>,</span>
<span class="line" id="L25"></span>
<span class="line" id="L26"><span class="tok-comment">/// `null` means the default version range for `os_tag`. If `os_tag` is `null` (native)</span></span>
<span class="line" id="L27"><span class="tok-comment">/// then `null` for this field means native.</span></span>
<span class="line" id="L28">os_version_min: ?OsVersion = <span class="tok-null">null</span>,</span>
<span class="line" id="L29"></span>
<span class="line" id="L30"><span class="tok-comment">/// When cross compiling, `null` means default (latest known OS version).</span></span>
<span class="line" id="L31"><span class="tok-comment">/// When `os_tag` is native, `null` means equal to the native OS version.</span></span>
<span class="line" id="L32">os_version_max: ?OsVersion = <span class="tok-null">null</span>,</span>
<span class="line" id="L33"></span>
<span class="line" id="L34"><span class="tok-comment">/// `null` means default when cross compiling, or native when os_tag is native.</span></span>
<span class="line" id="L35"><span class="tok-comment">/// If `isGnuLibC()` is `false`, this must be `null` and is ignored.</span></span>
<span class="line" id="L36">glibc_version: ?SemanticVersion = <span class="tok-null">null</span>,</span>
<span class="line" id="L37"></span>
<span class="line" id="L38"><span class="tok-comment">/// `null` means the native C ABI, if `os_tag` is native, otherwise it means the default C ABI.</span></span>
<span class="line" id="L39">abi: ?Target.Abi = <span class="tok-null">null</span>,</span>
<span class="line" id="L40"></span>
<span class="line" id="L41"><span class="tok-comment">/// When `os_tag` is `null`, then `null` means native. Otherwise it means the standard path</span></span>
<span class="line" id="L42"><span class="tok-comment">/// based on the `os_tag`.</span></span>
<span class="line" id="L43">dynamic_linker: DynamicLinker = DynamicLinker{},</span>
<span class="line" id="L44"></span>
<span class="line" id="L45"><span class="tok-comment">/// `null` means default for the cpu/arch/os combo.</span></span>
<span class="line" id="L46">ofmt: ?Target.ObjectFormat = <span class="tok-null">null</span>,</span>
<span class="line" id="L47"></span>
<span class="line" id="L48"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> CpuModel = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L49"> <span class="tok-comment">/// Always native</span></span>
<span class="line" id="L50"> native,</span>
<span class="line" id="L51"></span>
<span class="line" id="L52"> <span class="tok-comment">/// Always baseline</span></span>
<span class="line" id="L53"> baseline,</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"> <span class="tok-comment">/// If CPU Architecture is native, then the CPU model will be native. Otherwise,</span></span>
<span class="line" id="L56"> <span class="tok-comment">/// it will be baseline.</span></span>
<span class="line" id="L57"> determined_by_cpu_arch,</span>
<span class="line" id="L58"></span>
<span class="line" id="L59"> explicit: *<span class="tok-kw">const</span> Target.Cpu.Model,</span>
<span class="line" id="L60">};</span>
<span class="line" id="L61"></span>
<span class="line" id="L62"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> OsVersion = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L63"> none: <span class="tok-type">void</span>,</span>
<span class="line" id="L64"> semver: SemanticVersion,</span>
<span class="line" id="L65"> windows: Target.Os.WindowsVersion,</span>
<span class="line" id="L66">};</span>
<span class="line" id="L67"></span>
<span class="line" id="L68"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> SemanticVersion = std.SemanticVersion;</span>
<span class="line" id="L69"></span>
<span class="line" id="L70"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> DynamicLinker = Target.DynamicLinker;</span>
<span class="line" id="L71"></span>
<span class="line" id="L72"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fromTarget</span>(target: Target) CrossTarget {</span>
<span class="line" id="L73"> <span class="tok-kw">var</span> result: CrossTarget = .{</span>
<span class="line" id="L74"> .cpu_arch = target.cpu.arch,</span>
<span class="line" id="L75"> .cpu_model = .{ .explicit = target.cpu.model },</span>
<span class="line" id="L76"> .os_tag = target.os.tag,</span>
<span class="line" id="L77"> .os_version_min = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L78"> .os_version_max = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L79"> .abi = target.abi,</span>
<span class="line" id="L80"> .glibc_version = <span class="tok-kw">if</span> (target.isGnuLibC())</span>
<span class="line" id="L81"> target.os.version_range.linux.glibc</span>
<span class="line" id="L82"> <span class="tok-kw">else</span></span>
<span class="line" id="L83"> <span class="tok-null">null</span>,</span>
<span class="line" id="L84"> };</span>
<span class="line" id="L85"> result.updateOsVersionRange(target.os);</span>
<span class="line" id="L86"></span>
<span class="line" id="L87"> <span class="tok-kw">const</span> all_features = target.cpu.arch.allFeaturesList();</span>
<span class="line" id="L88"> <span class="tok-kw">var</span> cpu_model_set = target.cpu.model.features;</span>
<span class="line" id="L89"> cpu_model_set.populateDependencies(all_features);</span>
<span class="line" id="L90"> {</span>
<span class="line" id="L91"> <span class="tok-comment">// The "add" set is the full set with the CPU Model set removed.</span>
</span>
<span class="line" id="L92"> <span class="tok-kw">const</span> add_set = &result.cpu_features_add;</span>
<span class="line" id="L93"> add_set.* = target.cpu.features;</span>
<span class="line" id="L94"> add_set.removeFeatureSet(cpu_model_set);</span>
<span class="line" id="L95"> }</span>
<span class="line" id="L96"> {</span>
<span class="line" id="L97"> <span class="tok-comment">// The "sub" set is the features that are on in CPU Model set and off in the full set.</span>
</span>
<span class="line" id="L98"> <span class="tok-kw">const</span> sub_set = &result.cpu_features_sub;</span>
<span class="line" id="L99"> sub_set.* = cpu_model_set;</span>
<span class="line" id="L100"> sub_set.removeFeatureSet(target.cpu.features);</span>
<span class="line" id="L101"> }</span>
<span class="line" id="L102"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L103">}</span>
<span class="line" id="L104"></span>
<span class="line" id="L105"><span class="tok-kw">fn</span> <span class="tok-fn">updateOsVersionRange</span>(self: *CrossTarget, os: Target.Os) <span class="tok-type">void</span> {</span>
<span class="line" id="L106"> <span class="tok-kw">switch</span> (os.tag) {</span>
<span class="line" id="L107"> .freestanding,</span>
<span class="line" id="L108"> .ananas,</span>
<span class="line" id="L109"> .cloudabi,</span>
<span class="line" id="L110"> .fuchsia,</span>
<span class="line" id="L111"> .kfreebsd,</span>
<span class="line" id="L112"> .lv2,</span>
<span class="line" id="L113"> .solaris,</span>
<span class="line" id="L114"> .zos,</span>
<span class="line" id="L115"> .haiku,</span>
<span class="line" id="L116"> .minix,</span>
<span class="line" id="L117"> .rtems,</span>
<span class="line" id="L118"> .nacl,</span>
<span class="line" id="L119"> .aix,</span>
<span class="line" id="L120"> .cuda,</span>
<span class="line" id="L121"> .nvcl,</span>
<span class="line" id="L122"> .amdhsa,</span>
<span class="line" id="L123"> .ps4,</span>
<span class="line" id="L124"> .ps5,</span>
<span class="line" id="L125"> .elfiamcu,</span>
<span class="line" id="L126"> .mesa3d,</span>
<span class="line" id="L127"> .contiki,</span>
<span class="line" id="L128"> .amdpal,</span>
<span class="line" id="L129"> .hermit,</span>
<span class="line" id="L130"> .hurd,</span>
<span class="line" id="L131"> .wasi,</span>
<span class="line" id="L132"> .emscripten,</span>
<span class="line" id="L133"> .driverkit,</span>
<span class="line" id="L134"> .shadermodel,</span>
<span class="line" id="L135"> .uefi,</span>
<span class="line" id="L136"> .opencl,</span>
<span class="line" id="L137"> .glsl450,</span>
<span class="line" id="L138"> .vulkan,</span>
<span class="line" id="L139"> .plan9,</span>
<span class="line" id="L140"> .other,</span>
<span class="line" id="L141"> => {</span>
<span class="line" id="L142"> self.os_version_min = .{ .none = {} };</span>
<span class="line" id="L143"> self.os_version_max = .{ .none = {} };</span>
<span class="line" id="L144"> },</span>
<span class="line" id="L145"></span>
<span class="line" id="L146"> .freebsd,</span>
<span class="line" id="L147"> .macos,</span>
<span class="line" id="L148"> .ios,</span>
<span class="line" id="L149"> .tvos,</span>
<span class="line" id="L150"> .watchos,</span>
<span class="line" id="L151"> .netbsd,</span>
<span class="line" id="L152"> .openbsd,</span>
<span class="line" id="L153"> .dragonfly,</span>
<span class="line" id="L154"> => {</span>
<span class="line" id="L155"> self.os_version_min = .{ .semver = os.version_range.semver.min };</span>
<span class="line" id="L156"> self.os_version_max = .{ .semver = os.version_range.semver.max };</span>
<span class="line" id="L157"> },</span>
<span class="line" id="L158"></span>
<span class="line" id="L159"> .linux => {</span>
<span class="line" id="L160"> self.os_version_min = .{ .semver = os.version_range.linux.range.min };</span>
<span class="line" id="L161"> self.os_version_max = .{ .semver = os.version_range.linux.range.max };</span>
<span class="line" id="L162"> },</span>
<span class="line" id="L163"></span>
<span class="line" id="L164"> .windows => {</span>
<span class="line" id="L165"> self.os_version_min = .{ .windows = os.version_range.windows.min };</span>
<span class="line" id="L166"> self.os_version_max = .{ .windows = os.version_range.windows.max };</span>
<span class="line" id="L167"> },</span>
<span class="line" id="L168"> }</span>
<span class="line" id="L169">}</span>
<span class="line" id="L170"></span>
<span class="line" id="L171"><span class="tok-comment">/// TODO deprecated, use `std.zig.system.NativeTargetInfo.detect`.</span></span>
<span class="line" id="L172"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">toTarget</span>(self: CrossTarget) Target {</span>
<span class="line" id="L173"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L174"> .cpu = self.getCpu(),</span>
<span class="line" id="L175"> .os = self.getOs(),</span>
<span class="line" id="L176"> .abi = self.getAbi(),</span>
<span class="line" id="L177"> .ofmt = self.getObjectFormat(),</span>
<span class="line" id="L178"> };</span>
<span class="line" id="L179">}</span>
<span class="line" id="L180"></span>
<span class="line" id="L181"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ParseOptions = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L182"> <span class="tok-comment">/// This is sometimes called a "triple". It looks roughly like this:</span></span>
<span class="line" id="L183"> <span class="tok-comment">/// riscv64-linux-musl</span></span>
<span class="line" id="L184"> <span class="tok-comment">/// The fields are, respectively:</span></span>
<span class="line" id="L185"> <span class="tok-comment">/// * CPU Architecture</span></span>
<span class="line" id="L186"> <span class="tok-comment">/// * Operating System (and optional version range)</span></span>
<span class="line" id="L187"> <span class="tok-comment">/// * C ABI (optional, with optional glibc version)</span></span>
<span class="line" id="L188"> <span class="tok-comment">/// The string "native" can be used for CPU architecture as well as Operating System.</span></span>
<span class="line" id="L189"> <span class="tok-comment">/// If the CPU Architecture is specified as "native", then the Operating System and C ABI may be omitted.</span></span>
<span class="line" id="L190"> arch_os_abi: []<span class="tok-kw">const</span> <span class="tok-type">u8</span> = <span class="tok-str">"native"</span>,</span>
<span class="line" id="L191"></span>
<span class="line" id="L192"> <span class="tok-comment">/// Looks like "name+a+b-c-d+e", where "name" is a CPU Model name, "a", "b", and "e"</span></span>
<span class="line" id="L193"> <span class="tok-comment">/// are examples of CPU features to add to the set, and "c" and "d" are examples of CPU features</span></span>
<span class="line" id="L194"> <span class="tok-comment">/// to remove from the set.</span></span>
<span class="line" id="L195"> <span class="tok-comment">/// The following special strings are recognized for CPU Model name:</span></span>
<span class="line" id="L196"> <span class="tok-comment">/// * "baseline" - The "default" set of CPU features for cross-compiling. A conservative set</span></span>
<span class="line" id="L197"> <span class="tok-comment">/// of features that is expected to be supported on most available hardware.</span></span>
<span class="line" id="L198"> <span class="tok-comment">/// * "native" - The native CPU model is to be detected when compiling.</span></span>
<span class="line" id="L199"> <span class="tok-comment">/// If this field is not provided (`null`), then the value will depend on the</span></span>
<span class="line" id="L200"> <span class="tok-comment">/// parsed CPU Architecture. If native, then this will be "native". Otherwise, it will be "baseline".</span></span>
<span class="line" id="L201"> cpu_features: ?[]<span class="tok-kw">const</span> <span class="tok-type">u8</span> = <span class="tok-null">null</span>,</span>
<span class="line" id="L202"></span>
<span class="line" id="L203"> <span class="tok-comment">/// Absolute path to dynamic linker, to override the default, which is either a natively</span></span>
<span class="line" id="L204"> <span class="tok-comment">/// detected path, or a standard path.</span></span>
<span class="line" id="L205"> dynamic_linker: ?[]<span class="tok-kw">const</span> <span class="tok-type">u8</span> = <span class="tok-null">null</span>,</span>
<span class="line" id="L206"></span>
<span class="line" id="L207"> object_format: ?[]<span class="tok-kw">const</span> <span class="tok-type">u8</span> = <span class="tok-null">null</span>,</span>
<span class="line" id="L208"></span>
<span class="line" id="L209"> <span class="tok-comment">/// If this is provided, the function will populate some information about parsing failures,</span></span>
<span class="line" id="L210"> <span class="tok-comment">/// so that user-friendly error messages can be delivered.</span></span>
<span class="line" id="L211"> diagnostics: ?*Diagnostics = <span class="tok-null">null</span>,</span>
<span class="line" id="L212"></span>
<span class="line" id="L213"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Diagnostics = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L214"> <span class="tok-comment">/// If the architecture was determined, this will be populated.</span></span>
<span class="line" id="L215"> arch: ?Target.Cpu.Arch = <span class="tok-null">null</span>,</span>
<span class="line" id="L216"></span>
<span class="line" id="L217"> <span class="tok-comment">/// If the OS name was determined, this will be populated.</span></span>
<span class="line" id="L218"> os_name: ?[]<span class="tok-kw">const</span> <span class="tok-type">u8</span> = <span class="tok-null">null</span>,</span>
<span class="line" id="L219"></span>
<span class="line" id="L220"> <span class="tok-comment">/// If the OS tag was determined, this will be populated.</span></span>
<span class="line" id="L221"> os_tag: ?Target.Os.Tag = <span class="tok-null">null</span>,</span>
<span class="line" id="L222"></span>
<span class="line" id="L223"> <span class="tok-comment">/// If the ABI was determined, this will be populated.</span></span>
<span class="line" id="L224"> abi: ?Target.Abi = <span class="tok-null">null</span>,</span>
<span class="line" id="L225"></span>
<span class="line" id="L226"> <span class="tok-comment">/// If the CPU name was determined, this will be populated.</span></span>
<span class="line" id="L227"> cpu_name: ?[]<span class="tok-kw">const</span> <span class="tok-type">u8</span> = <span class="tok-null">null</span>,</span>
<span class="line" id="L228"></span>
<span class="line" id="L229"> <span class="tok-comment">/// If error.UnknownCpuFeature is returned, this will be populated.</span></span>
<span class="line" id="L230"> unknown_feature_name: ?[]<span class="tok-kw">const</span> <span class="tok-type">u8</span> = <span class="tok-null">null</span>,</span>
<span class="line" id="L231"> };</span>
<span class="line" id="L232">};</span>
<span class="line" id="L233"></span>
<span class="line" id="L234"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parse</span>(args: ParseOptions) !CrossTarget {</span>
<span class="line" id="L235"> <span class="tok-kw">var</span> dummy_diags: ParseOptions.Diagnostics = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L236"> <span class="tok-kw">const</span> diags = args.diagnostics <span class="tok-kw">orelse</span> &dummy_diags;</span>
<span class="line" id="L237"></span>
<span class="line" id="L238"> <span class="tok-kw">var</span> result: CrossTarget = .{</span>
<span class="line" id="L239"> .dynamic_linker = DynamicLinker.init(args.dynamic_linker),</span>
<span class="line" id="L240"> };</span>
<span class="line" id="L241"></span>
<span class="line" id="L242"> <span class="tok-kw">var</span> it = mem.splitScalar(<span class="tok-type">u8</span>, args.arch_os_abi, <span class="tok-str">'-'</span>);</span>
<span class="line" id="L243"> <span class="tok-kw">const</span> arch_name = it.first();</span>
<span class="line" id="L244"> <span class="tok-kw">const</span> arch_is_native = mem.eql(<span class="tok-type">u8</span>, arch_name, <span class="tok-str">"native"</span>);</span>
<span class="line" id="L245"> <span class="tok-kw">if</span> (!arch_is_native) {</span>
<span class="line" id="L246"> result.cpu_arch = std.meta.stringToEnum(Target.Cpu.Arch, arch_name) <span class="tok-kw">orelse</span></span>
<span class="line" id="L247"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnknownArchitecture;</span>
<span class="line" id="L248"> }</span>
<span class="line" id="L249"> <span class="tok-kw">const</span> arch = result.getCpuArch();</span>
<span class="line" id="L250"> diags.arch = arch;</span>
<span class="line" id="L251"></span>
<span class="line" id="L252"> <span class="tok-kw">if</span> (it.next()) |os_text| {</span>
<span class="line" id="L253"> <span class="tok-kw">try</span> parseOs(&result, diags, os_text);</span>
<span class="line" id="L254"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (!arch_is_native) {</span>
<span class="line" id="L255"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MissingOperatingSystem;</span>
<span class="line" id="L256"> }</span>
<span class="line" id="L257"></span>
<span class="line" id="L258"> <span class="tok-kw">const</span> opt_abi_text = it.next();</span>
<span class="line" id="L259"> <span class="tok-kw">if</span> (opt_abi_text) |abi_text| {</span>
<span class="line" id="L260"> <span class="tok-kw">var</span> abi_it = mem.splitScalar(<span class="tok-type">u8</span>, abi_text, <span class="tok-str">'.'</span>);</span>
<span class="line" id="L261"> <span class="tok-kw">const</span> abi = std.meta.stringToEnum(Target.Abi, abi_it.first()) <span class="tok-kw">orelse</span></span>
<span class="line" id="L262"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnknownApplicationBinaryInterface;</span>
<span class="line" id="L263"> result.abi = abi;</span>
<span class="line" id="L264"> diags.abi = abi;</span>
<span class="line" id="L265"></span>
<span class="line" id="L266"> <span class="tok-kw">const</span> abi_ver_text = abi_it.rest();</span>
<span class="line" id="L267"> <span class="tok-kw">if</span> (abi_it.next() != <span class="tok-null">null</span>) {</span>
<span class="line" id="L268"> <span class="tok-kw">if</span> (result.isGnuLibC()) {</span>
<span class="line" id="L269"> result.glibc_version = parseVersion(abi_ver_text) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L270"> <span class="tok-kw">error</span>.Overflow => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidAbiVersion,</span>
<span class="line" id="L271"> <span class="tok-kw">error</span>.InvalidVersion => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidAbiVersion,</span>
<span class="line" id="L272"> };</span>
<span class="line" id="L273"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L274"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidAbiVersion;</span>
<span class="line" id="L275"> }</span>
<span class="line" id="L276"> }</span>
<span class="line" id="L277"> }</span>
<span class="line" id="L278"></span>
<span class="line" id="L279"> <span class="tok-kw">if</span> (it.next() != <span class="tok-null">null</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnexpectedExtraField;</span>
<span class="line" id="L280"></span>
<span class="line" id="L281"> <span class="tok-kw">if</span> (args.cpu_features) |cpu_features| {</span>
<span class="line" id="L282"> <span class="tok-kw">const</span> all_features = arch.allFeaturesList();</span>
<span class="line" id="L283"> <span class="tok-kw">var</span> index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L284"> <span class="tok-kw">while</span> (index < cpu_features.len <span class="tok-kw">and</span></span>
<span class="line" id="L285"> cpu_features[index] != <span class="tok-str">'+'</span> <span class="tok-kw">and</span></span>
<span class="line" id="L286"> cpu_features[index] != <span class="tok-str">'-'</span>)</span>
<span class="line" id="L287"> {</span>
<span class="line" id="L288"> index += <span class="tok-number">1</span>;</span>
<span class="line" id="L289"> }</span>
<span class="line" id="L290"> <span class="tok-kw">const</span> cpu_name = cpu_features[<span class="tok-number">0</span>..index];</span>
<span class="line" id="L291"> diags.cpu_name = cpu_name;</span>
<span class="line" id="L292"></span>
<span class="line" id="L293"> <span class="tok-kw">const</span> add_set = &result.cpu_features_add;</span>
<span class="line" id="L294"> <span class="tok-kw">const</span> sub_set = &result.cpu_features_sub;</span>
<span class="line" id="L295"> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, cpu_name, <span class="tok-str">"native"</span>)) {</span>
<span class="line" id="L296"> result.cpu_model = .native;</span>
<span class="line" id="L297"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, cpu_name, <span class="tok-str">"baseline"</span>)) {</span>
<span class="line" id="L298"> result.cpu_model = .baseline;</span>
<span class="line" id="L299"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L300"> result.cpu_model = .{ .explicit = <span class="tok-kw">try</span> arch.parseCpuModel(cpu_name) };</span>
<span class="line" id="L301"> }</span>
<span class="line" id="L302"></span>
<span class="line" id="L303"> <span class="tok-kw">while</span> (index < cpu_features.len) {</span>
<span class="line" id="L304"> <span class="tok-kw">const</span> op = cpu_features[index];</span>
<span class="line" id="L305"> <span class="tok-kw">const</span> set = <span class="tok-kw">switch</span> (op) {</span>
<span class="line" id="L306"> <span class="tok-str">'+'</span> => add_set,</span>
<span class="line" id="L307"> <span class="tok-str">'-'</span> => sub_set,</span>
<span class="line" id="L308"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L309"> };</span>
<span class="line" id="L310"> index += <span class="tok-number">1</span>;</span>
<span class="line" id="L311"> <span class="tok-kw">const</span> start = index;</span>
<span class="line" id="L312"> <span class="tok-kw">while</span> (index < cpu_features.len <span class="tok-kw">and</span></span>
<span class="line" id="L313"> cpu_features[index] != <span class="tok-str">'+'</span> <span class="tok-kw">and</span></span>
<span class="line" id="L314"> cpu_features[index] != <span class="tok-str">'-'</span>)</span>
<span class="line" id="L315"> {</span>
<span class="line" id="L316"> index += <span class="tok-number">1</span>;</span>
<span class="line" id="L317"> }</span>
<span class="line" id="L318"> <span class="tok-kw">const</span> feature_name = cpu_features[start..index];</span>
<span class="line" id="L319"> <span class="tok-kw">for</span> (all_features, <span class="tok-number">0</span>..) |feature, feat_index_usize| {</span>
<span class="line" id="L320"> <span class="tok-kw">const</span> feat_index = <span class="tok-builtin">@as</span>(Target.Cpu.Feature.Set.Index, <span class="tok-builtin">@intCast</span>(feat_index_usize));</span>
<span class="line" id="L321"> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, feature_name, feature.name)) {</span>
<span class="line" id="L322"> set.addFeature(feat_index);</span>
<span class="line" id="L323"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L324"> }</span>
<span class="line" id="L325"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L326"> diags.unknown_feature_name = feature_name;</span>
<span class="line" id="L327"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnknownCpuFeature;</span>
<span class="line" id="L328"> }</span>
<span class="line" id="L329"> }</span>
<span class="line" id="L330"> }</span>
<span class="line" id="L331"></span>
<span class="line" id="L332"> <span class="tok-kw">if</span> (args.object_format) |ofmt_name| {</span>
<span class="line" id="L333"> result.ofmt = std.meta.stringToEnum(Target.ObjectFormat, ofmt_name) <span class="tok-kw">orelse</span></span>
<span class="line" id="L334"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnknownObjectFormat;</span>
<span class="line" id="L335"> }</span>
<span class="line" id="L336"></span>
<span class="line" id="L337"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L338">}</span>
<span class="line" id="L339"></span>
<span class="line" id="L340"><span class="tok-comment">/// Similar to `parse` except instead of fully parsing, it only determines the CPU</span></span>
<span class="line" id="L341"><span class="tok-comment">/// architecture and returns it if it can be determined, and returns `null` otherwise.</span></span>
<span class="line" id="L342"><span class="tok-comment">/// This is intended to be used if the API user of CrossTarget needs to learn the</span></span>
<span class="line" id="L343"><span class="tok-comment">/// target CPU architecture in order to fully populate `ParseOptions`.</span></span>
<span class="line" id="L344"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parseCpuArch</span>(args: ParseOptions) ?Target.Cpu.Arch {</span>
<span class="line" id="L345"> <span class="tok-kw">var</span> it = mem.splitScalar(<span class="tok-type">u8</span>, args.arch_os_abi, <span class="tok-str">'-'</span>);</span>
<span class="line" id="L346"> <span class="tok-kw">const</span> arch_name = it.first();</span>
<span class="line" id="L347"> <span class="tok-kw">const</span> arch_is_native = mem.eql(<span class="tok-type">u8</span>, arch_name, <span class="tok-str">"native"</span>);</span>
<span class="line" id="L348"> <span class="tok-kw">if</span> (arch_is_native) {</span>
<span class="line" id="L349"> <span class="tok-kw">return</span> builtin.cpu.arch;</span>
<span class="line" id="L350"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L351"> <span class="tok-kw">return</span> std.meta.stringToEnum(Target.Cpu.Arch, arch_name);</span>
<span class="line" id="L352"> }</span>
<span class="line" id="L353">}</span>
<span class="line" id="L354"></span>
<span class="line" id="L355"><span class="tok-comment">/// Parses a version with an omitted patch component, such as "1.0",</span></span>
<span class="line" id="L356"><span class="tok-comment">/// which SemanticVersion.parse is not capable of.</span></span>
<span class="line" id="L357"><span class="tok-kw">fn</span> <span class="tok-fn">parseVersion</span>(ver: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !SemanticVersion {</span>
<span class="line" id="L358"> <span class="tok-kw">const</span> parseVersionComponent = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L359"> <span class="tok-kw">fn</span> <span class="tok-fn">parseVersionComponent</span>(component: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">usize</span> {</span>
<span class="line" id="L360"> <span class="tok-kw">return</span> std.fmt.parseUnsigned(<span class="tok-type">usize</span>, component, <span class="tok-number">10</span>) <span class="tok-kw">catch</span> |err| {</span>
<span class="line" id="L361"> <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L362"> <span class="tok-kw">error</span>.InvalidCharacter => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidVersion,</span>
<span class="line" id="L363"> <span class="tok-kw">error</span>.Overflow => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Overflow,</span>
<span class="line" id="L364"> }</span>
<span class="line" id="L365"> };</span>
<span class="line" id="L366"> }</span>
<span class="line" id="L367"> }.parseVersionComponent;</span>
<span class="line" id="L368"> <span class="tok-kw">var</span> version_components = mem.split(<span class="tok-type">u8</span>, ver, <span class="tok-str">"."</span>);</span>
<span class="line" id="L369"> <span class="tok-kw">const</span> major = version_components.first();</span>
<span class="line" id="L370"> <span class="tok-kw">const</span> minor = version_components.next() <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidVersion;</span>
<span class="line" id="L371"> <span class="tok-kw">const</span> patch = version_components.next() <span class="tok-kw">orelse</span> <span class="tok-str">"0"</span>;</span>
<span class="line" id="L372"> <span class="tok-kw">if</span> (version_components.next() != <span class="tok-null">null</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidVersion;</span>
<span class="line" id="L373"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L374"> .major = <span class="tok-kw">try</span> parseVersionComponent(major),</span>
<span class="line" id="L375"> .minor = <span class="tok-kw">try</span> parseVersionComponent(minor),</span>
<span class="line" id="L376"> .patch = <span class="tok-kw">try</span> parseVersionComponent(patch),</span>
<span class="line" id="L377"> };</span>
<span class="line" id="L378">}</span>
<span class="line" id="L379"></span>
<span class="line" id="L380"><span class="tok-comment">/// TODO deprecated, use `std.zig.system.NativeTargetInfo.detect`.</span></span>
<span class="line" id="L381"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getCpu</span>(self: CrossTarget) Target.Cpu {</span>
<span class="line" id="L382"> <span class="tok-kw">switch</span> (self.cpu_model) {</span>
<span class="line" id="L383"> .native => {</span>
<span class="line" id="L384"> <span class="tok-comment">// This works when doing `zig build` because Zig generates a build executable using</span>
</span>
<span class="line" id="L385"> <span class="tok-comment">// native CPU model & features. However this will not be accurate otherwise, and</span>
</span>
<span class="line" id="L386"> <span class="tok-comment">// will need to be integrated with `std.zig.system.NativeTargetInfo.detect`.</span>
</span>
<span class="line" id="L387"> <span class="tok-kw">return</span> builtin.cpu;</span>
<span class="line" id="L388"> },</span>
<span class="line" id="L389"> .baseline => {</span>
<span class="line" id="L390"> <span class="tok-kw">var</span> adjusted_baseline = Target.Cpu.baseline(self.getCpuArch());</span>
<span class="line" id="L391"> self.updateCpuFeatures(&adjusted_baseline.features);</span>
<span class="line" id="L392"> <span class="tok-kw">return</span> adjusted_baseline;</span>
<span class="line" id="L393"> },</span>
<span class="line" id="L394"> .determined_by_cpu_arch => <span class="tok-kw">if</span> (self.cpu_arch == <span class="tok-null">null</span>) {</span>
<span class="line" id="L395"> <span class="tok-comment">// This works when doing `zig build` because Zig generates a build executable using</span>
</span>
<span class="line" id="L396"> <span class="tok-comment">// native CPU model & features. However this will not be accurate otherwise, and</span>
</span>
<span class="line" id="L397"> <span class="tok-comment">// will need to be integrated with `std.zig.system.NativeTargetInfo.detect`.</span>
</span>
<span class="line" id="L398"> <span class="tok-kw">return</span> builtin.cpu;</span>
<span class="line" id="L399"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L400"> <span class="tok-kw">var</span> adjusted_baseline = Target.Cpu.baseline(self.getCpuArch());</span>
<span class="line" id="L401"> self.updateCpuFeatures(&adjusted_baseline.features);</span>
<span class="line" id="L402"> <span class="tok-kw">return</span> adjusted_baseline;</span>
<span class="line" id="L403"> },</span>
<span class="line" id="L404"> .explicit => |model| {</span>
<span class="line" id="L405"> <span class="tok-kw">var</span> adjusted_model = model.toCpu(self.getCpuArch());</span>
<span class="line" id="L406"> self.updateCpuFeatures(&adjusted_model.features);</span>
<span class="line" id="L407"> <span class="tok-kw">return</span> adjusted_model;</span>
<span class="line" id="L408"> },</span>
<span class="line" id="L409"> }</span>
<span class="line" id="L410">}</span>
<span class="line" id="L411"></span>
<span class="line" id="L412"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getCpuArch</span>(self: CrossTarget) Target.Cpu.Arch {</span>
<span class="line" id="L413"> <span class="tok-kw">return</span> self.cpu_arch <span class="tok-kw">orelse</span> builtin.cpu.arch;</span>
<span class="line" id="L414">}</span>
<span class="line" id="L415"></span>
<span class="line" id="L416"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getCpuModel</span>(self: CrossTarget) *<span class="tok-kw">const</span> Target.Cpu.Model {</span>
<span class="line" id="L417"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (self.cpu_model) {</span>
<span class="line" id="L418"> .explicit => |cpu_model| cpu_model,</span>
<span class="line" id="L419"> <span class="tok-kw">else</span> => self.getCpu().model,</span>
<span class="line" id="L420"> };</span>
<span class="line" id="L421">}</span>
<span class="line" id="L422"></span>
<span class="line" id="L423"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getCpuFeatures</span>(self: CrossTarget) Target.Cpu.Feature.Set {</span>
<span class="line" id="L424"> <span class="tok-kw">return</span> self.getCpu().features;</span>
<span class="line" id="L425">}</span>
<span class="line" id="L426"></span>
<span class="line" id="L427"><span class="tok-comment">/// TODO deprecated, use `std.zig.system.NativeTargetInfo.detect`.</span></span>
<span class="line" id="L428"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getOs</span>(self: CrossTarget) Target.Os {</span>
<span class="line" id="L429"> <span class="tok-comment">// `builtin.os` works when doing `zig build` because Zig generates a build executable using</span>
</span>
<span class="line" id="L430"> <span class="tok-comment">// native OS version range. However this will not be accurate otherwise, and</span>
</span>
<span class="line" id="L431"> <span class="tok-comment">// will need to be integrated with `std.zig.system.NativeTargetInfo.detect`.</span>
</span>
<span class="line" id="L432"> <span class="tok-kw">var</span> adjusted_os = <span class="tok-kw">if</span> (self.os_tag) |os_tag| os_tag.defaultVersionRange(self.getCpuArch()) <span class="tok-kw">else</span> builtin.os;</span>
<span class="line" id="L433"></span>
<span class="line" id="L434"> <span class="tok-kw">if</span> (self.os_version_min) |min| <span class="tok-kw">switch</span> (min) {</span>
<span class="line" id="L435"> .none => {},</span>
<span class="line" id="L436"> .semver => |semver| <span class="tok-kw">switch</span> (self.getOsTag()) {</span>
<span class="line" id="L437"> .linux => adjusted_os.version_range.linux.range.min = semver,</span>
<span class="line" id="L438"> <span class="tok-kw">else</span> => adjusted_os.version_range.semver.min = semver,</span>
<span class="line" id="L439"> },</span>
<span class="line" id="L440"> .windows => |win_ver| adjusted_os.version_range.windows.min = win_ver,</span>
<span class="line" id="L441"> };</span>
<span class="line" id="L442"></span>
<span class="line" id="L443"> <span class="tok-kw">if</span> (self.os_version_max) |max| <span class="tok-kw">switch</span> (max) {</span>
<span class="line" id="L444"> .none => {},</span>
<span class="line" id="L445"> .semver => |semver| <span class="tok-kw">switch</span> (self.getOsTag()) {</span>
<span class="line" id="L446"> .linux => adjusted_os.version_range.linux.range.max = semver,</span>
<span class="line" id="L447"> <span class="tok-kw">else</span> => adjusted_os.version_range.semver.max = semver,</span>
<span class="line" id="L448"> },</span>
<span class="line" id="L449"> .windows => |win_ver| adjusted_os.version_range.windows.max = win_ver,</span>
<span class="line" id="L450"> };</span>
<span class="line" id="L451"></span>
<span class="line" id="L452"> <span class="tok-kw">if</span> (self.glibc_version) |glibc| {</span>
<span class="line" id="L453"> assert(self.isGnuLibC());</span>
<span class="line" id="L454"> adjusted_os.version_range.linux.glibc = glibc;</span>
<span class="line" id="L455"> }</span>
<span class="line" id="L456"></span>
<span class="line" id="L457"> <span class="tok-kw">return</span> adjusted_os;</span>
<span class="line" id="L458">}</span>
<span class="line" id="L459"></span>
<span class="line" id="L460"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getOsTag</span>(self: CrossTarget) Target.Os.Tag {</span>
<span class="line" id="L461"> <span class="tok-kw">return</span> self.os_tag <span class="tok-kw">orelse</span> builtin.os.tag;</span>
<span class="line" id="L462">}</span>
<span class="line" id="L463"></span>
<span class="line" id="L464"><span class="tok-comment">/// TODO deprecated, use `std.zig.system.NativeTargetInfo.detect`.</span></span>
<span class="line" id="L465"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getOsVersionMin</span>(self: CrossTarget) OsVersion {</span>
<span class="line" id="L466"> <span class="tok-kw">if</span> (self.os_version_min) |version_min| <span class="tok-kw">return</span> version_min;</span>
<span class="line" id="L467"> <span class="tok-kw">var</span> tmp: CrossTarget = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L468"> tmp.updateOsVersionRange(self.getOs());</span>
<span class="line" id="L469"> <span class="tok-kw">return</span> tmp.os_version_min.?;</span>
<span class="line" id="L470">}</span>
<span class="line" id="L471"></span>
<span class="line" id="L472"><span class="tok-comment">/// TODO deprecated, use `std.zig.system.NativeTargetInfo.detect`.</span></span>
<span class="line" id="L473"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getOsVersionMax</span>(self: CrossTarget) OsVersion {</span>
<span class="line" id="L474"> <span class="tok-kw">if</span> (self.os_version_max) |version_max| <span class="tok-kw">return</span> version_max;</span>
<span class="line" id="L475"> <span class="tok-kw">var</span> tmp: CrossTarget = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L476"> tmp.updateOsVersionRange(self.getOs());</span>
<span class="line" id="L477"> <span class="tok-kw">return</span> tmp.os_version_max.?;</span>
<span class="line" id="L478">}</span>
<span class="line" id="L479"></span>
<span class="line" id="L480"><span class="tok-comment">/// TODO deprecated, use `std.zig.system.NativeTargetInfo.detect`.</span></span>
<span class="line" id="L481"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getAbi</span>(self: CrossTarget) Target.Abi {</span>
<span class="line" id="L482"> <span class="tok-kw">if</span> (self.abi) |abi| <span class="tok-kw">return</span> abi;</span>
<span class="line" id="L483"></span>
<span class="line" id="L484"> <span class="tok-kw">if</span> (self.os_tag == <span class="tok-null">null</span>) {</span>
<span class="line" id="L485"> <span class="tok-comment">// This works when doing `zig build` because Zig generates a build executable using</span>
</span>
<span class="line" id="L486"> <span class="tok-comment">// native CPU model & features. However this will not be accurate otherwise, and</span>
</span>
<span class="line" id="L487"> <span class="tok-comment">// will need to be integrated with `std.zig.system.NativeTargetInfo.detect`.</span>
</span>
<span class="line" id="L488"> <span class="tok-kw">return</span> builtin.abi;</span>
<span class="line" id="L489"> }</span>
<span class="line" id="L490"></span>
<span class="line" id="L491"> <span class="tok-kw">return</span> Target.Abi.default(self.getCpuArch(), self.getOs());</span>
<span class="line" id="L492">}</span>
<span class="line" id="L493"></span>
<span class="line" id="L494"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isFreeBSD</span>(self: CrossTarget) <span class="tok-type">bool</span> {</span>
<span class="line" id="L495"> <span class="tok-kw">return</span> self.getOsTag() == .freebsd;</span>
<span class="line" id="L496">}</span>
<span class="line" id="L497"></span>
<span class="line" id="L498"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isDarwin</span>(self: CrossTarget) <span class="tok-type">bool</span> {</span>
<span class="line" id="L499"> <span class="tok-kw">return</span> self.getOsTag().isDarwin();</span>
<span class="line" id="L500">}</span>
<span class="line" id="L501"></span>
<span class="line" id="L502"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isNetBSD</span>(self: CrossTarget) <span class="tok-type">bool</span> {</span>
<span class="line" id="L503"> <span class="tok-kw">return</span> self.getOsTag() == .netbsd;</span>
<span class="line" id="L504">}</span>
<span class="line" id="L505"></span>
<span class="line" id="L506"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isOpenBSD</span>(self: CrossTarget) <span class="tok-type">bool</span> {</span>
<span class="line" id="L507"> <span class="tok-kw">return</span> self.getOsTag() == .openbsd;</span>
<span class="line" id="L508">}</span>
<span class="line" id="L509"></span>
<span class="line" id="L510"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isUefi</span>(self: CrossTarget) <span class="tok-type">bool</span> {</span>
<span class="line" id="L511"> <span class="tok-kw">return</span> self.getOsTag() == .uefi;</span>
<span class="line" id="L512">}</span>
<span class="line" id="L513"></span>
<span class="line" id="L514"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isDragonFlyBSD</span>(self: CrossTarget) <span class="tok-type">bool</span> {</span>
<span class="line" id="L515"> <span class="tok-kw">return</span> self.getOsTag() == .dragonfly;</span>
<span class="line" id="L516">}</span>
<span class="line" id="L517"></span>
<span class="line" id="L518"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isLinux</span>(self: CrossTarget) <span class="tok-type">bool</span> {</span>
<span class="line" id="L519"> <span class="tok-kw">return</span> self.getOsTag() == .linux;</span>
<span class="line" id="L520">}</span>
<span class="line" id="L521"></span>
<span class="line" id="L522"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isWindows</span>(self: CrossTarget) <span class="tok-type">bool</span> {</span>
<span class="line" id="L523"> <span class="tok-kw">return</span> self.getOsTag() == .windows;</span>
<span class="line" id="L524">}</span>
<span class="line" id="L525"></span>
<span class="line" id="L526"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">exeFileExt</span>(self: CrossTarget) [:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L527"> <span class="tok-kw">return</span> Target.exeFileExtSimple(self.getCpuArch(), self.getOsTag());</span>
<span class="line" id="L528">}</span>
<span class="line" id="L529"></span>
<span class="line" id="L530"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">staticLibSuffix</span>(self: CrossTarget) [:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L531"> <span class="tok-kw">return</span> Target.staticLibSuffix_os_abi(self.getOsTag(), self.getAbi());</span>
<span class="line" id="L532">}</span>
<span class="line" id="L533"></span>
<span class="line" id="L534"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">dynamicLibSuffix</span>(self: CrossTarget) [:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L535"> <span class="tok-kw">return</span> self.getOsTag().dynamicLibSuffix();</span>
<span class="line" id="L536">}</span>
<span class="line" id="L537"></span>
<span class="line" id="L538"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">libPrefix</span>(self: CrossTarget) [:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L539"> <span class="tok-kw">return</span> Target.libPrefix_os_abi(self.getOsTag(), self.getAbi());</span>
<span class="line" id="L540">}</span>
<span class="line" id="L541"></span>
<span class="line" id="L542"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isNativeCpu</span>(self: CrossTarget) <span class="tok-type">bool</span> {</span>
<span class="line" id="L543"> <span class="tok-kw">return</span> self.cpu_arch == <span class="tok-null">null</span> <span class="tok-kw">and</span></span>
<span class="line" id="L544"> (self.cpu_model == .native <span class="tok-kw">or</span> self.cpu_model == .determined_by_cpu_arch) <span class="tok-kw">and</span></span>
<span class="line" id="L545"> self.cpu_features_sub.isEmpty() <span class="tok-kw">and</span> self.cpu_features_add.isEmpty();</span>
<span class="line" id="L546">}</span>
<span class="line" id="L547"></span>
<span class="line" id="L548"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isNativeOs</span>(self: CrossTarget) <span class="tok-type">bool</span> {</span>
<span class="line" id="L549"> <span class="tok-kw">return</span> self.os_tag == <span class="tok-null">null</span> <span class="tok-kw">and</span> self.os_version_min == <span class="tok-null">null</span> <span class="tok-kw">and</span> self.os_version_max == <span class="tok-null">null</span> <span class="tok-kw">and</span></span>
<span class="line" id="L550"> self.dynamic_linker.get() == <span class="tok-null">null</span> <span class="tok-kw">and</span> self.glibc_version == <span class="tok-null">null</span>;</span>
<span class="line" id="L551">}</span>
<span class="line" id="L552"></span>
<span class="line" id="L553"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isNativeAbi</span>(self: CrossTarget) <span class="tok-type">bool</span> {</span>
<span class="line" id="L554"> <span class="tok-kw">return</span> self.os_tag == <span class="tok-null">null</span> <span class="tok-kw">and</span> self.abi == <span class="tok-null">null</span>;</span>
<span class="line" id="L555">}</span>
<span class="line" id="L556"></span>
<span class="line" id="L557"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isNative</span>(self: CrossTarget) <span class="tok-type">bool</span> {</span>
<span class="line" id="L558"> <span class="tok-kw">return</span> self.isNativeCpu() <span class="tok-kw">and</span> self.isNativeOs() <span class="tok-kw">and</span> self.isNativeAbi();</span>
<span class="line" id="L559">}</span>
<span class="line" id="L560"></span>
<span class="line" id="L561"><span class="tok-comment">/// Formats a version with the patch component omitted if it is zero,</span></span>
<span class="line" id="L562"><span class="tok-comment">/// unlike SemanticVersion.format which formats all its version components regardless.</span></span>
<span class="line" id="L563"><span class="tok-kw">fn</span> <span class="tok-fn">formatVersion</span>(version: SemanticVersion, writer: <span class="tok-kw">anytype</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L564"> <span class="tok-kw">if</span> (version.patch == <span class="tok-number">0</span>) {</span>
<span class="line" id="L565"> <span class="tok-kw">try</span> writer.print(<span class="tok-str">"{d}.{d}"</span>, .{ version.major, version.minor });</span>
<span class="line" id="L566"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L567"> <span class="tok-kw">try</span> writer.print(<span class="tok-str">"{d}.{d}.{d}"</span>, .{ version.major, version.minor, version.patch });</span>
<span class="line" id="L568"> }</span>
<span class="line" id="L569">}</span>
<span class="line" id="L570"></span>
<span class="line" id="L571"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">zigTriple</span>(self: CrossTarget, allocator: mem.Allocator) <span class="tok-kw">error</span>{OutOfMemory}![]<span class="tok-type">u8</span> {</span>
<span class="line" id="L572"> <span class="tok-kw">if</span> (self.isNative()) {</span>
<span class="line" id="L573"> <span class="tok-kw">return</span> allocator.dupe(<span class="tok-type">u8</span>, <span class="tok-str">"native"</span>);</span>
<span class="line" id="L574"> }</span>
<span class="line" id="L575"></span>
<span class="line" id="L576"> <span class="tok-kw">const</span> arch_name = <span class="tok-kw">if</span> (self.cpu_arch) |arch| <span class="tok-builtin">@tagName</span>(arch) <span class="tok-kw">else</span> <span class="tok-str">"native"</span>;</span>
<span class="line" id="L577"> <span class="tok-kw">const</span> os_name = <span class="tok-kw">if</span> (self.os_tag) |os_tag| <span class="tok-builtin">@tagName</span>(os_tag) <span class="tok-kw">else</span> <span class="tok-str">"native"</span>;</span>
<span class="line" id="L578"></span>
<span class="line" id="L579"> <span class="tok-kw">var</span> result = std.ArrayList(<span class="tok-type">u8</span>).init(allocator);</span>
<span class="line" id="L580"> <span class="tok-kw">defer</span> result.deinit();</span>
<span class="line" id="L581"></span>
<span class="line" id="L582"> <span class="tok-kw">try</span> result.writer().print(<span class="tok-str">"{s}-{s}"</span>, .{ arch_name, os_name });</span>
<span class="line" id="L583"></span>
<span class="line" id="L584"> <span class="tok-comment">// The zig target syntax does not allow specifying a max os version with no min, so</span>
</span>
<span class="line" id="L585"> <span class="tok-comment">// if either are present, we need the min.</span>
</span>
<span class="line" id="L586"> <span class="tok-kw">if</span> (self.os_version_min != <span class="tok-null">null</span> <span class="tok-kw">or</span> self.os_version_max != <span class="tok-null">null</span>) {</span>
<span class="line" id="L587"> <span class="tok-kw">switch</span> (self.getOsVersionMin()) {</span>
<span class="line" id="L588"> .none => {},</span>
<span class="line" id="L589"> .semver => |v| {</span>
<span class="line" id="L590"> <span class="tok-kw">try</span> result.writer().writeAll(<span class="tok-str">"."</span>);</span>
<span class="line" id="L591"> <span class="tok-kw">try</span> formatVersion(v, result.writer());</span>
<span class="line" id="L592"> },</span>
<span class="line" id="L593"> .windows => |v| <span class="tok-kw">try</span> result.writer().print(<span class="tok-str">"{s}"</span>, .{v}),</span>
<span class="line" id="L594"> }</span>
<span class="line" id="L595"> }</span>
<span class="line" id="L596"> <span class="tok-kw">if</span> (self.os_version_max) |max| {</span>
<span class="line" id="L597"> <span class="tok-kw">switch</span> (max) {</span>
<span class="line" id="L598"> .none => {},</span>
<span class="line" id="L599"> .semver => |v| {</span>
<span class="line" id="L600"> <span class="tok-kw">try</span> result.writer().writeAll(<span class="tok-str">"..."</span>);</span>
<span class="line" id="L601"> <span class="tok-kw">try</span> formatVersion(v, result.writer());</span>
<span class="line" id="L602"> },</span>
<span class="line" id="L603"> .windows => |v| <span class="tok-kw">try</span> result.writer().print(<span class="tok-str">"..{s}"</span>, .{v}),</span>
<span class="line" id="L604"> }</span>
<span class="line" id="L605"> }</span>
<span class="line" id="L606"></span>
<span class="line" id="L607"> <span class="tok-kw">if</span> (self.glibc_version) |v| {</span>
<span class="line" id="L608"> <span class="tok-kw">try</span> result.writer().print(<span class="tok-str">"-{s}."</span>, .{<span class="tok-builtin">@tagName</span>(self.getAbi())});</span>
<span class="line" id="L609"> <span class="tok-kw">try</span> formatVersion(v, result.writer());</span>
<span class="line" id="L610"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (self.abi) |abi| {</span>
<span class="line" id="L611"> <span class="tok-kw">try</span> result.writer().print(<span class="tok-str">"-{s}"</span>, .{<span class="tok-builtin">@tagName</span>(abi)});</span>
<span class="line" id="L612"> }</span>
<span class="line" id="L613"></span>
<span class="line" id="L614"> <span class="tok-kw">return</span> result.toOwnedSlice();</span>
<span class="line" id="L615">}</span>
<span class="line" id="L616"></span>
<span class="line" id="L617"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">allocDescription</span>(self: CrossTarget, allocator: mem.Allocator) ![]<span class="tok-type">u8</span> {</span>
<span class="line" id="L618"> <span class="tok-comment">// TODO is there anything else worthy of the description that is not</span>
</span>
<span class="line" id="L619"> <span class="tok-comment">// already captured in the triple?</span>
</span>
<span class="line" id="L620"> <span class="tok-kw">return</span> self.zigTriple(allocator);</span>
<span class="line" id="L621">}</span>
<span class="line" id="L622"></span>
<span class="line" id="L623"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">linuxTriple</span>(self: CrossTarget, allocator: mem.Allocator) ![]<span class="tok-type">u8</span> {</span>
<span class="line" id="L624"> <span class="tok-kw">return</span> Target.linuxTripleSimple(allocator, self.getCpuArch(), self.getOsTag(), self.getAbi());</span>
<span class="line" id="L625">}</span>
<span class="line" id="L626"></span>
<span class="line" id="L627"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">wantSharedLibSymLinks</span>(self: CrossTarget) <span class="tok-type">bool</span> {</span>
<span class="line" id="L628"> <span class="tok-kw">return</span> self.getOsTag() != .windows;</span>
<span class="line" id="L629">}</span>
<span class="line" id="L630"></span>
<span class="line" id="L631"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> VcpkgLinkage = std.builtin.LinkMode;</span>
<span class="line" id="L632"></span>
<span class="line" id="L633"><span class="tok-comment">/// Returned slice must be freed by the caller.</span></span>
<span class="line" id="L634"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">vcpkgTriplet</span>(self: CrossTarget, allocator: mem.Allocator, linkage: VcpkgLinkage) ![]<span class="tok-type">u8</span> {</span>
<span class="line" id="L635"> <span class="tok-kw">const</span> arch = <span class="tok-kw">switch</span> (self.getCpuArch()) {</span>
<span class="line" id="L636"> .x86 => <span class="tok-str">"x86"</span>,</span>
<span class="line" id="L637"> .x86_64 => <span class="tok-str">"x64"</span>,</span>
<span class="line" id="L638"></span>
<span class="line" id="L639"> .arm,</span>
<span class="line" id="L640"> .armeb,</span>
<span class="line" id="L641"> .thumb,</span>
<span class="line" id="L642"> .thumbeb,</span>
<span class="line" id="L643"> .aarch64_32,</span>
<span class="line" id="L644"> => <span class="tok-str">"arm"</span>,</span>
<span class="line" id="L645"></span>
<span class="line" id="L646"> .aarch64,</span>
<span class="line" id="L647"> .aarch64_be,</span>
<span class="line" id="L648"> => <span class="tok-str">"arm64"</span>,</span>
<span class="line" id="L649"></span>
<span class="line" id="L650"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnsupportedVcpkgArchitecture,</span>
<span class="line" id="L651"> };</span>
<span class="line" id="L652"></span>
<span class="line" id="L653"> <span class="tok-kw">const</span> os = <span class="tok-kw">switch</span> (self.getOsTag()) {</span>
<span class="line" id="L654"> .windows => <span class="tok-str">"windows"</span>,</span>
<span class="line" id="L655"> .linux => <span class="tok-str">"linux"</span>,</span>
<span class="line" id="L656"> .macos => <span class="tok-str">"macos"</span>,</span>
<span class="line" id="L657"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnsupportedVcpkgOperatingSystem,</span>
<span class="line" id="L658"> };</span>
<span class="line" id="L659"></span>
<span class="line" id="L660"> <span class="tok-kw">const</span> static_suffix = <span class="tok-kw">switch</span> (linkage) {</span>
<span class="line" id="L661"> .Static => <span class="tok-str">"-static"</span>,</span>
<span class="line" id="L662"> .Dynamic => <span class="tok-str">""</span>,</span>
<span class="line" id="L663"> };</span>
<span class="line" id="L664"></span>
<span class="line" id="L665"> <span class="tok-kw">return</span> std.fmt.allocPrint(allocator, <span class="tok-str">"{s}-{s}{s}"</span>, .{ arch, os, static_suffix });</span>
<span class="line" id="L666">}</span>
<span class="line" id="L667"></span>
<span class="line" id="L668"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isGnuLibC</span>(self: CrossTarget) <span class="tok-type">bool</span> {</span>
<span class="line" id="L669"> <span class="tok-kw">return</span> Target.isGnuLibC_os_tag_abi(self.getOsTag(), self.getAbi());</span>
<span class="line" id="L670">}</span>
<span class="line" id="L671"></span>
<span class="line" id="L672"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">setGnuLibCVersion</span>(self: *CrossTarget, major: <span class="tok-type">u32</span>, minor: <span class="tok-type">u32</span>, patch: <span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L673"> assert(self.isGnuLibC());</span>
<span class="line" id="L674"> self.glibc_version = SemanticVersion{ .major = major, .minor = minor, .patch = patch };</span>
<span class="line" id="L675">}</span>
<span class="line" id="L676"></span>
<span class="line" id="L677"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getObjectFormat</span>(self: CrossTarget) Target.ObjectFormat {</span>
<span class="line" id="L678"> <span class="tok-kw">return</span> self.ofmt <span class="tok-kw">orelse</span> Target.ObjectFormat.default(self.getOsTag(), self.getCpuArch());</span>
<span class="line" id="L679">}</span>
<span class="line" id="L680"></span>
<span class="line" id="L681"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">updateCpuFeatures</span>(self: CrossTarget, set: *Target.Cpu.Feature.Set) <span class="tok-type">void</span> {</span>
<span class="line" id="L682"> set.removeFeatureSet(self.cpu_features_sub);</span>
<span class="line" id="L683"> set.addFeatureSet(self.cpu_features_add);</span>
<span class="line" id="L684"> set.populateDependencies(self.getCpuArch().allFeaturesList());</span>
<span class="line" id="L685"> set.removeFeatureSet(self.cpu_features_sub);</span>
<span class="line" id="L686">}</span>
<span class="line" id="L687"></span>
<span class="line" id="L688"><span class="tok-kw">fn</span> <span class="tok-fn">parseOs</span>(result: *CrossTarget, diags: *ParseOptions.Diagnostics, text: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L689"> <span class="tok-kw">var</span> it = mem.splitScalar(<span class="tok-type">u8</span>, text, <span class="tok-str">'.'</span>);</span>
<span class="line" id="L690"> <span class="tok-kw">const</span> os_name = it.first();</span>
<span class="line" id="L691"> diags.os_name = os_name;</span>
<span class="line" id="L692"> <span class="tok-kw">const</span> os_is_native = mem.eql(<span class="tok-type">u8</span>, os_name, <span class="tok-str">"native"</span>);</span>
<span class="line" id="L693"> <span class="tok-kw">if</span> (!os_is_native) {</span>
<span class="line" id="L694"> result.os_tag = std.meta.stringToEnum(Target.Os.Tag, os_name) <span class="tok-kw">orelse</span></span>
<span class="line" id="L695"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnknownOperatingSystem;</span>
<span class="line" id="L696"> }</span>
<span class="line" id="L697"> <span class="tok-kw">const</span> tag = result.getOsTag();</span>
<span class="line" id="L698"> diags.os_tag = tag;</span>
<span class="line" id="L699"></span>
<span class="line" id="L700"> <span class="tok-kw">const</span> version_text = it.rest();</span>
<span class="line" id="L701"> <span class="tok-kw">if</span> (it.next() == <span class="tok-null">null</span>) <span class="tok-kw">return</span>;</span>
<span class="line" id="L702"></span>
<span class="line" id="L703"> <span class="tok-kw">switch</span> (tag) {</span>
<span class="line" id="L704"> .freestanding,</span>
<span class="line" id="L705"> .ananas,</span>
<span class="line" id="L706"> .cloudabi,</span>
<span class="line" id="L707"> .fuchsia,</span>
<span class="line" id="L708"> .kfreebsd,</span>
<span class="line" id="L709"> .lv2,</span>
<span class="line" id="L710"> .solaris,</span>
<span class="line" id="L711"> .zos,</span>
<span class="line" id="L712"> .haiku,</span>
<span class="line" id="L713"> .minix,</span>
<span class="line" id="L714"> .rtems,</span>
<span class="line" id="L715"> .nacl,</span>
<span class="line" id="L716"> .aix,</span>
<span class="line" id="L717"> .cuda,</span>
<span class="line" id="L718"> .nvcl,</span>
<span class="line" id="L719"> .amdhsa,</span>
<span class="line" id="L720"> .ps4,</span>
<span class="line" id="L721"> .ps5,</span>
<span class="line" id="L722"> .elfiamcu,</span>
<span class="line" id="L723"> .mesa3d,</span>
<span class="line" id="L724"> .contiki,</span>
<span class="line" id="L725"> .amdpal,</span>
<span class="line" id="L726"> .hermit,</span>
<span class="line" id="L727"> .hurd,</span>
<span class="line" id="L728"> .wasi,</span>
<span class="line" id="L729"> .emscripten,</span>
<span class="line" id="L730"> .uefi,</span>
<span class="line" id="L731"> .opencl,</span>
<span class="line" id="L732"> .glsl450,</span>
<span class="line" id="L733"> .vulkan,</span>
<span class="line" id="L734"> .plan9,</span>
<span class="line" id="L735"> .driverkit,</span>
<span class="line" id="L736"> .shadermodel,</span>
<span class="line" id="L737"> .other,</span>
<span class="line" id="L738"> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidOperatingSystemVersion,</span>
<span class="line" id="L739"></span>
<span class="line" id="L740"> .freebsd,</span>
<span class="line" id="L741"> .macos,</span>
<span class="line" id="L742"> .ios,</span>
<span class="line" id="L743"> .tvos,</span>
<span class="line" id="L744"> .watchos,</span>
<span class="line" id="L745"> .netbsd,</span>
<span class="line" id="L746"> .openbsd,</span>
<span class="line" id="L747"> .linux,</span>
<span class="line" id="L748"> .dragonfly,</span>
<span class="line" id="L749"> => {</span>
<span class="line" id="L750"> <span class="tok-kw">var</span> range_it = mem.splitSequence(<span class="tok-type">u8</span>, version_text, <span class="tok-str">"..."</span>);</span>
<span class="line" id="L751"></span>
<span class="line" id="L752"> <span class="tok-kw">const</span> min_text = range_it.next().?;</span>
<span class="line" id="L753"> <span class="tok-kw">const</span> min_ver = parseVersion(min_text) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L754"> <span class="tok-kw">error</span>.Overflow => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidOperatingSystemVersion,</span>
<span class="line" id="L755"> <span class="tok-kw">error</span>.InvalidVersion => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidOperatingSystemVersion,</span>
<span class="line" id="L756"> };</span>
<span class="line" id="L757"> result.os_version_min = .{ .semver = min_ver };</span>
<span class="line" id="L758"></span>
<span class="line" id="L759"> <span class="tok-kw">const</span> max_text = range_it.next() <span class="tok-kw">orelse</span> <span class="tok-kw">return</span>;</span>
<span class="line" id="L760"> <span class="tok-kw">const</span> max_ver = parseVersion(max_text) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L761"> <span class="tok-kw">error</span>.Overflow => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidOperatingSystemVersion,</span>
<span class="line" id="L762"> <span class="tok-kw">error</span>.InvalidVersion => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidOperatingSystemVersion,</span>
<span class="line" id="L763"> };</span>
<span class="line" id="L764"> result.os_version_max = .{ .semver = max_ver };</span>
<span class="line" id="L765"> },</span>
<span class="line" id="L766"></span>
<span class="line" id="L767"> .windows => {</span>
<span class="line" id="L768"> <span class="tok-kw">var</span> range_it = mem.splitSequence(<span class="tok-type">u8</span>, version_text, <span class="tok-str">"..."</span>);</span>
<span class="line" id="L769"></span>
<span class="line" id="L770"> <span class="tok-kw">const</span> min_text = range_it.first();</span>
<span class="line" id="L771"> <span class="tok-kw">const</span> min_ver = std.meta.stringToEnum(Target.Os.WindowsVersion, min_text) <span class="tok-kw">orelse</span></span>
<span class="line" id="L772"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidOperatingSystemVersion;</span>
<span class="line" id="L773"> result.os_version_min = .{ .windows = min_ver };</span>
<span class="line" id="L774"></span>
<span class="line" id="L775"> <span class="tok-kw">const</span> max_text = range_it.next() <span class="tok-kw">orelse</span> <span class="tok-kw">return</span>;</span>
<span class="line" id="L776"> <span class="tok-kw">const</span> max_ver = std.meta.stringToEnum(Target.Os.WindowsVersion, max_text) <span class="tok-kw">orelse</span></span>
<span class="line" id="L777"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidOperatingSystemVersion;</span>
<span class="line" id="L778"> result.os_version_max = .{ .windows = max_ver };</span>
<span class="line" id="L779"> },</span>
<span class="line" id="L780"> }</span>
<span class="line" id="L781">}</span>
<span class="line" id="L782"></span>
<span class="line" id="L783"><span class="tok-kw">test</span> <span class="tok-str">"CrossTarget.parse"</span> {</span>
<span class="line" id="L784"> <span class="tok-kw">if</span> (builtin.target.isGnuLibC()) {</span>
<span class="line" id="L785"> <span class="tok-kw">var</span> cross_target = <span class="tok-kw">try</span> CrossTarget.parse(.{});</span>
<span class="line" id="L786"> cross_target.setGnuLibCVersion(<span class="tok-number">2</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>);</span>
<span class="line" id="L787"></span>
<span class="line" id="L788"> <span class="tok-kw">const</span> text = <span class="tok-kw">try</span> cross_target.zigTriple(std.testing.allocator);</span>
<span class="line" id="L789"> <span class="tok-kw">defer</span> std.testing.allocator.free(text);</span>
<span class="line" id="L790"></span>
<span class="line" id="L791"> <span class="tok-kw">var</span> buf: [<span class="tok-number">256</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L792"> <span class="tok-kw">const</span> triple = std.fmt.bufPrint(</span>
<span class="line" id="L793"> buf[<span class="tok-number">0</span>..],</span>
<span class="line" id="L794"> <span class="tok-str">"native-native-{s}.2.1.1"</span>,</span>
<span class="line" id="L795"> .{<span class="tok-builtin">@tagName</span>(builtin.abi)},</span>
<span class="line" id="L796"> ) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L797"></span>
<span class="line" id="L798"> <span class="tok-kw">try</span> std.testing.expectEqualSlices(<span class="tok-type">u8</span>, triple, text);</span>
<span class="line" id="L799"> }</span>
<span class="line" id="L800"> {</span>
<span class="line" id="L801"> <span class="tok-kw">const</span> cross_target = <span class="tok-kw">try</span> CrossTarget.parse(.{</span>
<span class="line" id="L802"> .arch_os_abi = <span class="tok-str">"aarch64-linux"</span>,</span>
<span class="line" id="L803"> .cpu_features = <span class="tok-str">"native"</span>,</span>
<span class="line" id="L804"> });</span>
<span class="line" id="L805"></span>
<span class="line" id="L806"> <span class="tok-kw">try</span> std.testing.expect(cross_target.cpu_arch.? == .aarch64);</span>
<span class="line" id="L807"> <span class="tok-kw">try</span> std.testing.expect(cross_target.cpu_model == .native);</span>
<span class="line" id="L808"> }</span>
<span class="line" id="L809"> {</span>
<span class="line" id="L810"> <span class="tok-kw">const</span> cross_target = <span class="tok-kw">try</span> CrossTarget.parse(.{ .arch_os_abi = <span class="tok-str">"native"</span> });</span>
<span class="line" id="L811"></span>
<span class="line" id="L812"> <span class="tok-kw">try</span> std.testing.expect(cross_target.cpu_arch == <span class="tok-null">null</span>);</span>
<span class="line" id="L813"> <span class="tok-kw">try</span> std.testing.expect(cross_target.isNative());</span>
<span class="line" id="L814"></span>
<span class="line" id="L815"> <span class="tok-kw">const</span> text = <span class="tok-kw">try</span> cross_target.zigTriple(std.testing.allocator);</span>
<span class="line" id="L816"> <span class="tok-kw">defer</span> std.testing.allocator.free(text);</span>
<span class="line" id="L817"> <span class="tok-kw">try</span> std.testing.expectEqualSlices(<span class="tok-type">u8</span>, <span class="tok-str">"native"</span>, text);</span>
<span class="line" id="L818"> }</span>
<span class="line" id="L819"> {</span>
<span class="line" id="L820"> <span class="tok-kw">const</span> cross_target = <span class="tok-kw">try</span> CrossTarget.parse(.{</span>
<span class="line" id="L821"> .arch_os_abi = <span class="tok-str">"x86_64-linux-gnu"</span>,</span>
<span class="line" id="L822"> .cpu_features = <span class="tok-str">"x86_64-sse-sse2-avx-cx8"</span>,</span>
<span class="line" id="L823"> });</span>
<span class="line" id="L824"> <span class="tok-kw">const</span> target = cross_target.toTarget();</span>
<span class="line" id="L825"></span>
<span class="line" id="L826"> <span class="tok-kw">try</span> std.testing.expect(target.os.tag == .linux);</span>
<span class="line" id="L827"> <span class="tok-kw">try</span> std.testing.expect(target.abi == .gnu);</span>
<span class="line" id="L828"> <span class="tok-kw">try</span> std.testing.expect(target.cpu.arch == .x86_64);</span>
<span class="line" id="L829"> <span class="tok-kw">try</span> std.testing.expect(!Target.x86.featureSetHas(target.cpu.features, .sse));</span>
<span class="line" id="L830"> <span class="tok-kw">try</span> std.testing.expect(!Target.x86.featureSetHas(target.cpu.features, .avx));</span>
<span class="line" id="L831"> <span class="tok-kw">try</span> std.testing.expect(!Target.x86.featureSetHas(target.cpu.features, .cx8));</span>
<span class="line" id="L832"> <span class="tok-kw">try</span> std.testing.expect(Target.x86.featureSetHas(target.cpu.features, .cmov));</span>
<span class="line" id="L833"> <span class="tok-kw">try</span> std.testing.expect(Target.x86.featureSetHas(target.cpu.features, .fxsr));</span>
<span class="line" id="L834"></span>
<span class="line" id="L835"> <span class="tok-kw">try</span> std.testing.expect(Target.x86.featureSetHasAny(target.cpu.features, .{ .sse, .avx, .cmov }));</span>
<span class="line" id="L836"> <span class="tok-kw">try</span> std.testing.expect(!Target.x86.featureSetHasAny(target.cpu.features, .{ .sse, .avx }));</span>
<span class="line" id="L837"> <span class="tok-kw">try</span> std.testing.expect(Target.x86.featureSetHasAll(target.cpu.features, .{ .mmx, .x87 }));</span>
<span class="line" id="L838"> <span class="tok-kw">try</span> std.testing.expect(!Target.x86.featureSetHasAll(target.cpu.features, .{ .mmx, .x87, .sse }));</span>
<span class="line" id="L839"></span>
<span class="line" id="L840"> <span class="tok-kw">const</span> text = <span class="tok-kw">try</span> cross_target.zigTriple(std.testing.allocator);</span>
<span class="line" id="L841"> <span class="tok-kw">defer</span> std.testing.allocator.free(text);</span>
<span class="line" id="L842"> <span class="tok-kw">try</span> std.testing.expectEqualSlices(<span class="tok-type">u8</span>, <span class="tok-str">"x86_64-linux-gnu"</span>, text);</span>
<span class="line" id="L843"> }</span>
<span class="line" id="L844"> {</span>
<span class="line" id="L845"> <span class="tok-kw">const</span> cross_target = <span class="tok-kw">try</span> CrossTarget.parse(.{</span>
<span class="line" id="L846"> .arch_os_abi = <span class="tok-str">"arm-linux-musleabihf"</span>,</span>
<span class="line" id="L847"> .cpu_features = <span class="tok-str">"generic+v8a"</span>,</span>
<span class="line" id="L848"> });</span>
<span class="line" id="L849"> <span class="tok-kw">const</span> target = cross_target.toTarget();</span>
<span class="line" id="L850"></span>
<span class="line" id="L851"> <span class="tok-kw">try</span> std.testing.expect(target.os.tag == .linux);</span>
<span class="line" id="L852"> <span class="tok-kw">try</span> std.testing.expect(target.abi == .musleabihf);</span>
<span class="line" id="L853"> <span class="tok-kw">try</span> std.testing.expect(target.cpu.arch == .arm);</span>
<span class="line" id="L854"> <span class="tok-kw">try</span> std.testing.expect(target.cpu.model == &Target.arm.cpu.generic);</span>
<span class="line" id="L855"> <span class="tok-kw">try</span> std.testing.expect(Target.arm.featureSetHas(target.cpu.features, .v8a));</span>
<span class="line" id="L856"></span>
<span class="line" id="L857"> <span class="tok-kw">const</span> text = <span class="tok-kw">try</span> cross_target.zigTriple(std.testing.allocator);</span>
<span class="line" id="L858"> <span class="tok-kw">defer</span> std.testing.allocator.free(text);</span>
<span class="line" id="L859"> <span class="tok-kw">try</span> std.testing.expectEqualSlices(<span class="tok-type">u8</span>, <span class="tok-str">"arm-linux-musleabihf"</span>, text);</span>
<span class="line" id="L860"> }</span>
<span class="line" id="L861"> {</span>
<span class="line" id="L862"> <span class="tok-kw">const</span> cross_target = <span class="tok-kw">try</span> CrossTarget.parse(.{</span>
<span class="line" id="L863"> .arch_os_abi = <span class="tok-str">"aarch64-linux.3.10...4.4.1-gnu.2.27"</span>,</span>
<span class="line" id="L864"> .cpu_features = <span class="tok-str">"generic+v8a"</span>,</span>
<span class="line" id="L865"> });</span>
<span class="line" id="L866"> <span class="tok-kw">const</span> target = cross_target.toTarget();</span>
<span class="line" id="L867"></span>
<span class="line" id="L868"> <span class="tok-kw">try</span> std.testing.expect(target.cpu.arch == .aarch64);</span>
<span class="line" id="L869"> <span class="tok-kw">try</span> std.testing.expect(target.os.tag == .linux);</span>
<span class="line" id="L870"> <span class="tok-kw">try</span> std.testing.expect(target.os.version_range.linux.range.min.major == <span class="tok-number">3</span>);</span>
<span class="line" id="L871"> <span class="tok-kw">try</span> std.testing.expect(target.os.version_range.linux.range.min.minor == <span class="tok-number">10</span>);</span>
<span class="line" id="L872"> <span class="tok-kw">try</span> std.testing.expect(target.os.version_range.linux.range.min.patch == <span class="tok-number">0</span>);</span>
<span class="line" id="L873"> <span class="tok-kw">try</span> std.testing.expect(target.os.version_range.linux.range.max.major == <span class="tok-number">4</span>);</span>
<span class="line" id="L874"> <span class="tok-kw">try</span> std.testing.expect(target.os.version_range.linux.range.max.minor == <span class="tok-number">4</span>);</span>
<span class="line" id="L875"> <span class="tok-kw">try</span> std.testing.expect(target.os.version_range.linux.range.max.patch == <span class="tok-number">1</span>);</span>
<span class="line" id="L876"> <span class="tok-kw">try</span> std.testing.expect(target.os.version_range.linux.glibc.major == <span class="tok-number">2</span>);</span>
<span class="line" id="L877"> <span class="tok-kw">try</span> std.testing.expect(target.os.version_range.linux.glibc.minor == <span class="tok-number">27</span>);</span>
<span class="line" id="L878"> <span class="tok-kw">try</span> std.testing.expect(target.os.version_range.linux.glibc.patch == <span class="tok-number">0</span>);</span>
<span class="line" id="L879"> <span class="tok-kw">try</span> std.testing.expect(target.abi == .gnu);</span>
<span class="line" id="L880"></span>
<span class="line" id="L881"> <span class="tok-kw">const</span> text = <span class="tok-kw">try</span> cross_target.zigTriple(std.testing.allocator);</span>
<span class="line" id="L882"> <span class="tok-kw">defer</span> std.testing.allocator.free(text);</span>
<span class="line" id="L883"> <span class="tok-kw">try</span> std.testing.expectEqualSlices(<span class="tok-type">u8</span>, <span class="tok-str">"aarch64-linux.3.10...4.4.1-gnu.2.27"</span>, text);</span>
<span class="line" id="L884"> }</span>
<span class="line" id="L885">}</span>
<span class="line" id="L886"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/zig/ErrorBundle.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! To support incremental compilation, errors are stored in various places</span></span>
<span class="line" id="L2"><span class="tok-comment">//! so that they can be created and destroyed appropriately. This structure</span></span>
<span class="line" id="L3"><span class="tok-comment">//! is used to collect all the errors from the various places into one</span></span>
<span class="line" id="L4"><span class="tok-comment">//! convenient place for API users to consume.</span></span>
<span class="line" id="L5"><span class="tok-comment">//!</span></span>
<span class="line" id="L6"><span class="tok-comment">//! There is one special encoding for this data structure. If both arrays are</span></span>
<span class="line" id="L7"><span class="tok-comment">//! empty, it means there are no errors. This special encoding exists so that</span></span>
<span class="line" id="L8"><span class="tok-comment">//! heap allocation is not needed in the common case of no errors.</span></span>
<span class="line" id="L9"></span>
<span class="line" id="L10">string_bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L11"><span class="tok-comment">/// The first thing in this array is an `ErrorMessageList`.</span></span>
<span class="line" id="L12">extra: []<span class="tok-kw">const</span> <span class="tok-type">u32</span>,</span>
<span class="line" id="L13"></span>
<span class="line" id="L14"><span class="tok-comment">/// Special encoding when there are no errors.</span></span>
<span class="line" id="L15"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> empty: ErrorBundle = .{</span>
<span class="line" id="L16"> .string_bytes = &.{},</span>
<span class="line" id="L17"> .extra = &.{},</span>
<span class="line" id="L18">};</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"><span class="tok-comment">// An index into `extra` pointing at an `ErrorMessage`.</span>
</span>
<span class="line" id="L21"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> MessageIndex = <span class="tok-kw">enum</span>(<span class="tok-type">u32</span>) {</span>
<span class="line" id="L22"> _,</span>
<span class="line" id="L23">};</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"><span class="tok-comment">// An index into `extra` pointing at an `SourceLocation`.</span>
</span>
<span class="line" id="L26"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> SourceLocationIndex = <span class="tok-kw">enum</span>(<span class="tok-type">u32</span>) {</span>
<span class="line" id="L27"> none = <span class="tok-number">0</span>,</span>
<span class="line" id="L28"> _,</span>
<span class="line" id="L29">};</span>
<span class="line" id="L30"></span>
<span class="line" id="L31"><span class="tok-comment">/// There will be a MessageIndex for each len at start.</span></span>
<span class="line" id="L32"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ErrorMessageList = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L33"> len: <span class="tok-type">u32</span>,</span>
<span class="line" id="L34"> start: <span class="tok-type">u32</span>,</span>
<span class="line" id="L35"> <span class="tok-comment">/// null-terminated string index. 0 means no compile log text.</span></span>
<span class="line" id="L36"> compile_log_text: <span class="tok-type">u32</span>,</span>
<span class="line" id="L37">};</span>
<span class="line" id="L38"></span>
<span class="line" id="L39"><span class="tok-comment">/// Trailing:</span></span>
<span class="line" id="L40"><span class="tok-comment">/// * ReferenceTrace for each reference_trace_len</span></span>
<span class="line" id="L41"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> SourceLocation = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L42"> <span class="tok-comment">/// null terminated string index</span></span>
<span class="line" id="L43"> src_path: <span class="tok-type">u32</span>,</span>
<span class="line" id="L44"> line: <span class="tok-type">u32</span>,</span>
<span class="line" id="L45"> column: <span class="tok-type">u32</span>,</span>
<span class="line" id="L46"> <span class="tok-comment">/// byte offset of starting token</span></span>
<span class="line" id="L47"> span_start: <span class="tok-type">u32</span>,</span>
<span class="line" id="L48"> <span class="tok-comment">/// byte offset of main error location</span></span>
<span class="line" id="L49"> span_main: <span class="tok-type">u32</span>,</span>
<span class="line" id="L50"> <span class="tok-comment">/// byte offset of end of last token</span></span>
<span class="line" id="L51"> span_end: <span class="tok-type">u32</span>,</span>
<span class="line" id="L52"> <span class="tok-comment">/// null terminated string index, possibly null.</span></span>
<span class="line" id="L53"> <span class="tok-comment">/// Does not include the trailing newline.</span></span>
<span class="line" id="L54"> source_line: <span class="tok-type">u32</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L55"> reference_trace_len: <span class="tok-type">u32</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L56">};</span>
<span class="line" id="L57"></span>
<span class="line" id="L58"><span class="tok-comment">/// Trailing:</span></span>
<span class="line" id="L59"><span class="tok-comment">/// * MessageIndex for each notes_len.</span></span>
<span class="line" id="L60"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ErrorMessage = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L61"> <span class="tok-comment">/// null terminated string index</span></span>
<span class="line" id="L62"> msg: <span class="tok-type">u32</span>,</span>
<span class="line" id="L63"> <span class="tok-comment">/// Usually one, but incremented for redundant messages.</span></span>
<span class="line" id="L64"> count: <span class="tok-type">u32</span> = <span class="tok-number">1</span>,</span>
<span class="line" id="L65"> src_loc: SourceLocationIndex = .none,</span>
<span class="line" id="L66"> notes_len: <span class="tok-type">u32</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L67">};</span>
<span class="line" id="L68"></span>
<span class="line" id="L69"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ReferenceTrace = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L70"> <span class="tok-comment">/// null terminated string index</span></span>
<span class="line" id="L71"> <span class="tok-comment">/// Except for the sentinel ReferenceTrace element, in which case:</span></span>
<span class="line" id="L72"> <span class="tok-comment">/// * 0 means remaining references hidden</span></span>
<span class="line" id="L73"> <span class="tok-comment">/// * >0 means N references hidden</span></span>
<span class="line" id="L74"> decl_name: <span class="tok-type">u32</span>,</span>
<span class="line" id="L75"> <span class="tok-comment">/// Index into extra of a SourceLocation</span></span>
<span class="line" id="L76"> <span class="tok-comment">/// If this is 0, this is the sentinel ReferenceTrace element.</span></span>
<span class="line" id="L77"> src_loc: SourceLocationIndex,</span>
<span class="line" id="L78">};</span>
<span class="line" id="L79"></span>
<span class="line" id="L80"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(eb: *ErrorBundle, gpa: Allocator) <span class="tok-type">void</span> {</span>
<span class="line" id="L81"> gpa.free(eb.string_bytes);</span>
<span class="line" id="L82"> gpa.free(eb.extra);</span>
<span class="line" id="L83"> eb.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L84">}</span>
<span class="line" id="L85"></span>
<span class="line" id="L86"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">errorMessageCount</span>(eb: ErrorBundle) <span class="tok-type">u32</span> {</span>
<span class="line" id="L87"> <span class="tok-kw">if</span> (eb.extra.len == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L88"> <span class="tok-kw">return</span> eb.getErrorMessageList().len;</span>
<span class="line" id="L89">}</span>
<span class="line" id="L90"></span>
<span class="line" id="L91"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getErrorMessageList</span>(eb: ErrorBundle) ErrorMessageList {</span>
<span class="line" id="L92"> <span class="tok-kw">return</span> eb.extraData(ErrorMessageList, <span class="tok-number">0</span>).data;</span>
<span class="line" id="L93">}</span>
<span class="line" id="L94"></span>
<span class="line" id="L95"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getMessages</span>(eb: ErrorBundle) []<span class="tok-kw">const</span> MessageIndex {</span>
<span class="line" id="L96"> <span class="tok-kw">const</span> list = eb.getErrorMessageList();</span>
<span class="line" id="L97"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>([]<span class="tok-kw">const</span> MessageIndex, <span class="tok-builtin">@ptrCast</span>(eb.extra[list.start..][<span class="tok-number">0</span>..list.len]));</span>
<span class="line" id="L98">}</span>
<span class="line" id="L99"></span>
<span class="line" id="L100"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getErrorMessage</span>(eb: ErrorBundle, index: MessageIndex) ErrorMessage {</span>
<span class="line" id="L101"> <span class="tok-kw">return</span> eb.extraData(ErrorMessage, <span class="tok-builtin">@intFromEnum</span>(index)).data;</span>
<span class="line" id="L102">}</span>
<span class="line" id="L103"></span>
<span class="line" id="L104"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getSourceLocation</span>(eb: ErrorBundle, index: SourceLocationIndex) SourceLocation {</span>
<span class="line" id="L105"> assert(index != .none);</span>
<span class="line" id="L106"> <span class="tok-kw">return</span> eb.extraData(SourceLocation, <span class="tok-builtin">@intFromEnum</span>(index)).data;</span>
<span class="line" id="L107">}</span>
<span class="line" id="L108"></span>
<span class="line" id="L109"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getNotes</span>(eb: ErrorBundle, index: MessageIndex) []<span class="tok-kw">const</span> MessageIndex {</span>
<span class="line" id="L110"> <span class="tok-kw">const</span> notes_len = eb.getErrorMessage(index).notes_len;</span>
<span class="line" id="L111"> <span class="tok-kw">const</span> start = <span class="tok-builtin">@intFromEnum</span>(index) + <span class="tok-builtin">@typeInfo</span>(ErrorMessage).Struct.fields.len;</span>
<span class="line" id="L112"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>([]<span class="tok-kw">const</span> MessageIndex, <span class="tok-builtin">@ptrCast</span>(eb.extra[start..][<span class="tok-number">0</span>..notes_len]));</span>
<span class="line" id="L113">}</span>
<span class="line" id="L114"></span>
<span class="line" id="L115"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getCompileLogOutput</span>(eb: ErrorBundle) [:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L116"> <span class="tok-kw">return</span> nullTerminatedString(eb, getErrorMessageList(eb).compile_log_text);</span>
<span class="line" id="L117">}</span>
<span class="line" id="L118"></span>
<span class="line" id="L119"><span class="tok-comment">/// Returns the requested data, as well as the new index which is at the start of the</span></span>
<span class="line" id="L120"><span class="tok-comment">/// trailers for the object.</span></span>
<span class="line" id="L121"><span class="tok-kw">fn</span> <span class="tok-fn">extraData</span>(eb: ErrorBundle, <span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>, index: <span class="tok-type">usize</span>) <span class="tok-kw">struct</span> { data: T, end: <span class="tok-type">usize</span> } {</span>
<span class="line" id="L122"> <span class="tok-kw">const</span> fields = <span class="tok-builtin">@typeInfo</span>(T).Struct.fields;</span>
<span class="line" id="L123"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = index;</span>
<span class="line" id="L124"> <span class="tok-kw">var</span> result: T = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L125"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (fields) |field| {</span>
<span class="line" id="L126"> <span class="tok-builtin">@field</span>(result, field.name) = <span class="tok-kw">switch</span> (field.<span class="tok-type">type</span>) {</span>
<span class="line" id="L127"> <span class="tok-type">u32</span> => eb.extra[i],</span>
<span class="line" id="L128"> MessageIndex => <span class="tok-builtin">@as</span>(MessageIndex, <span class="tok-builtin">@enumFromInt</span>(eb.extra[i])),</span>
<span class="line" id="L129"> SourceLocationIndex => <span class="tok-builtin">@as</span>(SourceLocationIndex, <span class="tok-builtin">@enumFromInt</span>(eb.extra[i])),</span>
<span class="line" id="L130"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"bad field type"</span>),</span>
<span class="line" id="L131"> };</span>
<span class="line" id="L132"> i += <span class="tok-number">1</span>;</span>
<span class="line" id="L133"> }</span>
<span class="line" id="L134"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L135"> .data = result,</span>
<span class="line" id="L136"> .end = i,</span>
<span class="line" id="L137"> };</span>
<span class="line" id="L138">}</span>
<span class="line" id="L139"></span>
<span class="line" id="L140"><span class="tok-comment">/// Given an index into `string_bytes` returns the null-terminated string found there.</span></span>
<span class="line" id="L141"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">nullTerminatedString</span>(eb: ErrorBundle, index: <span class="tok-type">usize</span>) [:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L142"> <span class="tok-kw">const</span> string_bytes = eb.string_bytes;</span>
<span class="line" id="L143"> <span class="tok-kw">var</span> end: <span class="tok-type">usize</span> = index;</span>
<span class="line" id="L144"> <span class="tok-kw">while</span> (string_bytes[end] != <span class="tok-number">0</span>) {</span>
<span class="line" id="L145"> end += <span class="tok-number">1</span>;</span>
<span class="line" id="L146"> }</span>
<span class="line" id="L147"> <span class="tok-kw">return</span> string_bytes[index..end :<span class="tok-number">0</span>];</span>
<span class="line" id="L148">}</span>
<span class="line" id="L149"></span>
<span class="line" id="L150"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> RenderOptions = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L151"> ttyconf: std.io.tty.Config,</span>
<span class="line" id="L152"> include_reference_trace: <span class="tok-type">bool</span> = <span class="tok-null">true</span>,</span>
<span class="line" id="L153"> include_source_line: <span class="tok-type">bool</span> = <span class="tok-null">true</span>,</span>
<span class="line" id="L154"> include_log_text: <span class="tok-type">bool</span> = <span class="tok-null">true</span>,</span>
<span class="line" id="L155">};</span>
<span class="line" id="L156"></span>
<span class="line" id="L157"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">renderToStdErr</span>(eb: ErrorBundle, options: RenderOptions) <span class="tok-type">void</span> {</span>
<span class="line" id="L158"> std.debug.getStderrMutex().lock();</span>
<span class="line" id="L159"> <span class="tok-kw">defer</span> std.debug.getStderrMutex().unlock();</span>
<span class="line" id="L160"> <span class="tok-kw">const</span> stderr = std.io.getStdErr();</span>
<span class="line" id="L161"> <span class="tok-kw">return</span> renderToWriter(eb, options, stderr.writer()) <span class="tok-kw">catch</span> <span class="tok-kw">return</span>;</span>
<span class="line" id="L162">}</span>
<span class="line" id="L163"></span>
<span class="line" id="L164"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">renderToWriter</span>(eb: ErrorBundle, options: RenderOptions, writer: <span class="tok-kw">anytype</span>) <span class="tok-type">anyerror</span>!<span class="tok-type">void</span> {</span>
<span class="line" id="L165"> <span class="tok-kw">for</span> (eb.getMessages()) |err_msg| {</span>
<span class="line" id="L166"> <span class="tok-kw">try</span> renderErrorMessageToWriter(eb, options, err_msg, writer, <span class="tok-str">"error"</span>, .red, <span class="tok-number">0</span>);</span>
<span class="line" id="L167"> }</span>
<span class="line" id="L168"></span>
<span class="line" id="L169"> <span class="tok-kw">if</span> (options.include_log_text) {</span>
<span class="line" id="L170"> <span class="tok-kw">const</span> log_text = eb.getCompileLogOutput();</span>
<span class="line" id="L171"> <span class="tok-kw">if</span> (log_text.len != <span class="tok-number">0</span>) {</span>
<span class="line" id="L172"> <span class="tok-kw">try</span> writer.writeAll(<span class="tok-str">"\nCompile Log Output:\n"</span>);</span>
<span class="line" id="L173"> <span class="tok-kw">try</span> writer.writeAll(log_text);</span>
<span class="line" id="L174"> }</span>
<span class="line" id="L175"> }</span>
<span class="line" id="L176">}</span>
<span class="line" id="L177"></span>
<span class="line" id="L178"><span class="tok-kw">fn</span> <span class="tok-fn">renderErrorMessageToWriter</span>(</span>
<span class="line" id="L179"> eb: ErrorBundle,</span>
<span class="line" id="L180"> options: RenderOptions,</span>
<span class="line" id="L181"> err_msg_index: MessageIndex,</span>
<span class="line" id="L182"> stderr: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L183"> kind: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L184"> color: std.io.tty.Color,</span>
<span class="line" id="L185"> indent: <span class="tok-type">usize</span>,</span>
<span class="line" id="L186">) <span class="tok-type">anyerror</span>!<span class="tok-type">void</span> {</span>
<span class="line" id="L187"> <span class="tok-kw">const</span> ttyconf = options.ttyconf;</span>
<span class="line" id="L188"> <span class="tok-kw">var</span> counting_writer = std.io.countingWriter(stderr);</span>
<span class="line" id="L189"> <span class="tok-kw">const</span> counting_stderr = counting_writer.writer();</span>
<span class="line" id="L190"> <span class="tok-kw">const</span> err_msg = eb.getErrorMessage(err_msg_index);</span>
<span class="line" id="L191"> <span class="tok-kw">if</span> (err_msg.src_loc != .none) {</span>
<span class="line" id="L192"> <span class="tok-kw">const</span> src = eb.extraData(SourceLocation, <span class="tok-builtin">@intFromEnum</span>(err_msg.src_loc));</span>
<span class="line" id="L193"> <span class="tok-kw">try</span> counting_stderr.writeByteNTimes(<span class="tok-str">' '</span>, indent);</span>
<span class="line" id="L194"> <span class="tok-kw">try</span> ttyconf.setColor(stderr, .bold);</span>
<span class="line" id="L195"> <span class="tok-kw">try</span> counting_stderr.print(<span class="tok-str">"{s}:{d}:{d}: "</span>, .{</span>
<span class="line" id="L196"> eb.nullTerminatedString(src.data.src_path),</span>
<span class="line" id="L197"> src.data.line + <span class="tok-number">1</span>,</span>
<span class="line" id="L198"> src.data.column + <span class="tok-number">1</span>,</span>
<span class="line" id="L199"> });</span>
<span class="line" id="L200"> <span class="tok-kw">try</span> ttyconf.setColor(stderr, color);</span>
<span class="line" id="L201"> <span class="tok-kw">try</span> counting_stderr.writeAll(kind);</span>
<span class="line" id="L202"> <span class="tok-kw">try</span> counting_stderr.writeAll(<span class="tok-str">": "</span>);</span>
<span class="line" id="L203"> <span class="tok-comment">// This is the length of the part before the error message:</span>
</span>
<span class="line" id="L204"> <span class="tok-comment">// e.g. "file.zig:4:5: error: "</span>
</span>
<span class="line" id="L205"> <span class="tok-kw">const</span> prefix_len = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(counting_stderr.context.bytes_written));</span>
<span class="line" id="L206"> <span class="tok-kw">try</span> ttyconf.setColor(stderr, .reset);</span>
<span class="line" id="L207"> <span class="tok-kw">try</span> ttyconf.setColor(stderr, .bold);</span>
<span class="line" id="L208"> <span class="tok-kw">if</span> (err_msg.count == <span class="tok-number">1</span>) {</span>
<span class="line" id="L209"> <span class="tok-kw">try</span> writeMsg(eb, err_msg, stderr, prefix_len);</span>
<span class="line" id="L210"> <span class="tok-kw">try</span> stderr.writeByte(<span class="tok-str">'\n'</span>);</span>
<span class="line" id="L211"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L212"> <span class="tok-kw">try</span> writeMsg(eb, err_msg, stderr, prefix_len);</span>
<span class="line" id="L213"> <span class="tok-kw">try</span> ttyconf.setColor(stderr, .dim);</span>
<span class="line" id="L214"> <span class="tok-kw">try</span> stderr.print(<span class="tok-str">" ({d} times)\n"</span>, .{err_msg.count});</span>
<span class="line" id="L215"> }</span>
<span class="line" id="L216"> <span class="tok-kw">try</span> ttyconf.setColor(stderr, .reset);</span>
<span class="line" id="L217"> <span class="tok-kw">if</span> (src.data.source_line != <span class="tok-number">0</span> <span class="tok-kw">and</span> options.include_source_line) {</span>
<span class="line" id="L218"> <span class="tok-kw">const</span> line = eb.nullTerminatedString(src.data.source_line);</span>
<span class="line" id="L219"> <span class="tok-kw">for</span> (line) |b| <span class="tok-kw">switch</span> (b) {</span>
<span class="line" id="L220"> <span class="tok-str">'\t'</span> => <span class="tok-kw">try</span> stderr.writeByte(<span class="tok-str">' '</span>),</span>
<span class="line" id="L221"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> stderr.writeByte(b),</span>
<span class="line" id="L222"> };</span>
<span class="line" id="L223"> <span class="tok-kw">try</span> stderr.writeByte(<span class="tok-str">'\n'</span>);</span>
<span class="line" id="L224"> <span class="tok-comment">// TODO basic unicode code point monospace width</span>
</span>
<span class="line" id="L225"> <span class="tok-kw">const</span> before_caret = src.data.span_main - src.data.span_start;</span>
<span class="line" id="L226"> <span class="tok-comment">// -1 since span.main includes the caret</span>
</span>
<span class="line" id="L227"> <span class="tok-kw">const</span> after_caret = src.data.span_end -| src.data.span_main -| <span class="tok-number">1</span>;</span>
<span class="line" id="L228"> <span class="tok-kw">try</span> stderr.writeByteNTimes(<span class="tok-str">' '</span>, src.data.column - before_caret);</span>
<span class="line" id="L229"> <span class="tok-kw">try</span> ttyconf.setColor(stderr, .green);</span>
<span class="line" id="L230"> <span class="tok-kw">try</span> stderr.writeByteNTimes(<span class="tok-str">'~'</span>, before_caret);</span>
<span class="line" id="L231"> <span class="tok-kw">try</span> stderr.writeByte(<span class="tok-str">'^'</span>);</span>
<span class="line" id="L232"> <span class="tok-kw">try</span> stderr.writeByteNTimes(<span class="tok-str">'~'</span>, after_caret);</span>
<span class="line" id="L233"> <span class="tok-kw">try</span> stderr.writeByte(<span class="tok-str">'\n'</span>);</span>
<span class="line" id="L234"> <span class="tok-kw">try</span> ttyconf.setColor(stderr, .reset);</span>
<span class="line" id="L235"> }</span>
<span class="line" id="L236"> <span class="tok-kw">for</span> (eb.getNotes(err_msg_index)) |note| {</span>
<span class="line" id="L237"> <span class="tok-kw">try</span> renderErrorMessageToWriter(eb, options, note, stderr, <span class="tok-str">"note"</span>, .cyan, indent);</span>
<span class="line" id="L238"> }</span>
<span class="line" id="L239"> <span class="tok-kw">if</span> (src.data.reference_trace_len > <span class="tok-number">0</span> <span class="tok-kw">and</span> options.include_reference_trace) {</span>
<span class="line" id="L240"> <span class="tok-kw">try</span> ttyconf.setColor(stderr, .reset);</span>
<span class="line" id="L241"> <span class="tok-kw">try</span> ttyconf.setColor(stderr, .dim);</span>
<span class="line" id="L242"> <span class="tok-kw">try</span> stderr.print(<span class="tok-str">"referenced by:\n"</span>, .{});</span>
<span class="line" id="L243"> <span class="tok-kw">var</span> ref_index = src.end;</span>
<span class="line" id="L244"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..src.data.reference_trace_len) |_| {</span>
<span class="line" id="L245"> <span class="tok-kw">const</span> ref_trace = eb.extraData(ReferenceTrace, ref_index);</span>
<span class="line" id="L246"> ref_index = ref_trace.end;</span>
<span class="line" id="L247"> <span class="tok-kw">if</span> (ref_trace.data.src_loc != .none) {</span>
<span class="line" id="L248"> <span class="tok-kw">const</span> ref_src = eb.getSourceLocation(ref_trace.data.src_loc);</span>
<span class="line" id="L249"> <span class="tok-kw">try</span> stderr.print(<span class="tok-str">" {s}: {s}:{d}:{d}\n"</span>, .{</span>
<span class="line" id="L250"> eb.nullTerminatedString(ref_trace.data.decl_name),</span>
<span class="line" id="L251"> eb.nullTerminatedString(ref_src.src_path),</span>
<span class="line" id="L252"> ref_src.line + <span class="tok-number">1</span>,</span>
<span class="line" id="L253"> ref_src.column + <span class="tok-number">1</span>,</span>
<span class="line" id="L254"> });</span>
<span class="line" id="L255"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (ref_trace.data.decl_name != <span class="tok-number">0</span>) {</span>
<span class="line" id="L256"> <span class="tok-kw">const</span> count = ref_trace.data.decl_name;</span>
<span class="line" id="L257"> <span class="tok-kw">try</span> stderr.print(</span>
<span class="line" id="L258"> <span class="tok-str">" {d} reference(s) hidden; use '-freference-trace={d}' to see all references\n"</span>,</span>
<span class="line" id="L259"> .{ count, count + src.data.reference_trace_len - <span class="tok-number">1</span> },</span>
<span class="line" id="L260"> );</span>
<span class="line" id="L261"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L262"> <span class="tok-kw">try</span> stderr.print(</span>
<span class="line" id="L263"> <span class="tok-str">" remaining reference traces hidden; use '-freference-trace' to see all reference traces\n"</span>,</span>
<span class="line" id="L264"> .{},</span>
<span class="line" id="L265"> );</span>
<span class="line" id="L266"> }</span>
<span class="line" id="L267"> }</span>
<span class="line" id="L268"> <span class="tok-kw">try</span> stderr.writeByte(<span class="tok-str">'\n'</span>);</span>
<span class="line" id="L269"> <span class="tok-kw">try</span> ttyconf.setColor(stderr, .reset);</span>
<span class="line" id="L270"> }</span>
<span class="line" id="L271"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L272"> <span class="tok-kw">try</span> ttyconf.setColor(stderr, color);</span>
<span class="line" id="L273"> <span class="tok-kw">try</span> stderr.writeByteNTimes(<span class="tok-str">' '</span>, indent);</span>
<span class="line" id="L274"> <span class="tok-kw">try</span> stderr.writeAll(kind);</span>
<span class="line" id="L275"> <span class="tok-kw">try</span> stderr.writeAll(<span class="tok-str">": "</span>);</span>
<span class="line" id="L276"> <span class="tok-kw">try</span> ttyconf.setColor(stderr, .reset);</span>
<span class="line" id="L277"> <span class="tok-kw">const</span> msg = eb.nullTerminatedString(err_msg.msg);</span>
<span class="line" id="L278"> <span class="tok-kw">if</span> (err_msg.count == <span class="tok-number">1</span>) {</span>
<span class="line" id="L279"> <span class="tok-kw">try</span> stderr.print(<span class="tok-str">"{s}\n"</span>, .{msg});</span>
<span class="line" id="L280"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L281"> <span class="tok-kw">try</span> stderr.print(<span class="tok-str">"{s}"</span>, .{msg});</span>
<span class="line" id="L282"> <span class="tok-kw">try</span> ttyconf.setColor(stderr, .dim);</span>
<span class="line" id="L283"> <span class="tok-kw">try</span> stderr.print(<span class="tok-str">" ({d} times)\n"</span>, .{err_msg.count});</span>
<span class="line" id="L284"> }</span>
<span class="line" id="L285"> <span class="tok-kw">try</span> ttyconf.setColor(stderr, .reset);</span>
<span class="line" id="L286"> <span class="tok-kw">for</span> (eb.getNotes(err_msg_index)) |note| {</span>
<span class="line" id="L287"> <span class="tok-kw">try</span> renderErrorMessageToWriter(eb, options, note, stderr, <span class="tok-str">"note"</span>, .cyan, indent + <span class="tok-number">4</span>);</span>
<span class="line" id="L288"> }</span>
<span class="line" id="L289"> }</span>
<span class="line" id="L290">}</span>
<span class="line" id="L291"></span>
<span class="line" id="L292"><span class="tok-comment">/// Splits the error message up into lines to properly indent them</span></span>
<span class="line" id="L293"><span class="tok-comment">/// to allow for long, good-looking error messages.</span></span>
<span class="line" id="L294"><span class="tok-comment">///</span></span>
<span class="line" id="L295"><span class="tok-comment">/// This is used to split the message in `@compileError("hello\nworld")` for example.</span></span>
<span class="line" id="L296"><span class="tok-kw">fn</span> <span class="tok-fn">writeMsg</span>(eb: ErrorBundle, err_msg: ErrorMessage, stderr: <span class="tok-kw">anytype</span>, indent: <span class="tok-type">usize</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L297"> <span class="tok-kw">var</span> lines = std.mem.splitScalar(<span class="tok-type">u8</span>, eb.nullTerminatedString(err_msg.msg), <span class="tok-str">'\n'</span>);</span>
<span class="line" id="L298"> <span class="tok-kw">while</span> (lines.next()) |line| {</span>
<span class="line" id="L299"> <span class="tok-kw">try</span> stderr.writeAll(line);</span>
<span class="line" id="L300"> <span class="tok-kw">if</span> (lines.index == <span class="tok-null">null</span>) <span class="tok-kw">break</span>;</span>
<span class="line" id="L301"> <span class="tok-kw">try</span> stderr.writeByte(<span class="tok-str">'\n'</span>);</span>
<span class="line" id="L302"> <span class="tok-kw">try</span> stderr.writeByteNTimes(<span class="tok-str">' '</span>, indent);</span>
<span class="line" id="L303"> }</span>
<span class="line" id="L304">}</span>
<span class="line" id="L305"></span>
<span class="line" id="L306"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L307"><span class="tok-kw">const</span> ErrorBundle = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L308"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L309"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L310"></span>
<span class="line" id="L311"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Wip = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L312"> gpa: Allocator,</span>
<span class="line" id="L313"> string_bytes: std.ArrayListUnmanaged(<span class="tok-type">u8</span>),</span>
<span class="line" id="L314"> <span class="tok-comment">/// The first thing in this array is a ErrorMessageList.</span></span>
<span class="line" id="L315"> extra: std.ArrayListUnmanaged(<span class="tok-type">u32</span>),</span>
<span class="line" id="L316"> root_list: std.ArrayListUnmanaged(MessageIndex),</span>
<span class="line" id="L317"></span>
<span class="line" id="L318"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(wip: *Wip, gpa: Allocator) !<span class="tok-type">void</span> {</span>
<span class="line" id="L319"> wip.* = .{</span>
<span class="line" id="L320"> .gpa = gpa,</span>
<span class="line" id="L321"> .string_bytes = .{},</span>
<span class="line" id="L322"> .extra = .{},</span>
<span class="line" id="L323"> .root_list = .{},</span>
<span class="line" id="L324"> };</span>
<span class="line" id="L325"></span>
<span class="line" id="L326"> <span class="tok-comment">// So that 0 can be used to indicate a null string.</span>
</span>
<span class="line" id="L327"> <span class="tok-kw">try</span> wip.string_bytes.append(gpa, <span class="tok-number">0</span>);</span>
<span class="line" id="L328"></span>
<span class="line" id="L329"> assert(<span class="tok-number">0</span> == <span class="tok-kw">try</span> addExtra(wip, ErrorMessageList{</span>
<span class="line" id="L330"> .len = <span class="tok-number">0</span>,</span>
<span class="line" id="L331"> .start = <span class="tok-number">0</span>,</span>
<span class="line" id="L332"> .compile_log_text = <span class="tok-number">0</span>,</span>
<span class="line" id="L333"> }));</span>
<span class="line" id="L334"> }</span>
<span class="line" id="L335"></span>
<span class="line" id="L336"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(wip: *Wip) <span class="tok-type">void</span> {</span>
<span class="line" id="L337"> <span class="tok-kw">const</span> gpa = wip.gpa;</span>
<span class="line" id="L338"> wip.root_list.deinit(gpa);</span>
<span class="line" id="L339"> wip.string_bytes.deinit(gpa);</span>
<span class="line" id="L340"> wip.extra.deinit(gpa);</span>
<span class="line" id="L341"> wip.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L342"> }</span>
<span class="line" id="L343"></span>
<span class="line" id="L344"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">toOwnedBundle</span>(wip: *Wip, compile_log_text: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !ErrorBundle {</span>
<span class="line" id="L345"> <span class="tok-kw">const</span> gpa = wip.gpa;</span>
<span class="line" id="L346"> <span class="tok-kw">if</span> (wip.root_list.items.len == <span class="tok-number">0</span>) {</span>
<span class="line" id="L347"> assert(compile_log_text.len == <span class="tok-number">0</span>);</span>
<span class="line" id="L348"> <span class="tok-comment">// Special encoding when there are no errors.</span>
</span>
<span class="line" id="L349"> wip.deinit();</span>
<span class="line" id="L350"> wip.* = .{</span>
<span class="line" id="L351"> .gpa = gpa,</span>
<span class="line" id="L352"> .string_bytes = .{},</span>
<span class="line" id="L353"> .extra = .{},</span>
<span class="line" id="L354"> .root_list = .{},</span>
<span class="line" id="L355"> };</span>
<span class="line" id="L356"> <span class="tok-kw">return</span> empty;</span>
<span class="line" id="L357"> }</span>
<span class="line" id="L358"></span>
<span class="line" id="L359"> <span class="tok-kw">const</span> compile_log_str_index = <span class="tok-kw">if</span> (compile_log_text.len == <span class="tok-number">0</span>) <span class="tok-number">0</span> <span class="tok-kw">else</span> str: {</span>
<span class="line" id="L360"> <span class="tok-kw">const</span> str = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(wip.string_bytes.items.len));</span>
<span class="line" id="L361"> <span class="tok-kw">try</span> wip.string_bytes.ensureUnusedCapacity(gpa, compile_log_text.len + <span class="tok-number">1</span>);</span>
<span class="line" id="L362"> wip.string_bytes.appendSliceAssumeCapacity(compile_log_text);</span>
<span class="line" id="L363"> wip.string_bytes.appendAssumeCapacity(<span class="tok-number">0</span>);</span>
<span class="line" id="L364"> <span class="tok-kw">break</span> :str str;</span>
<span class="line" id="L365"> };</span>
<span class="line" id="L366"></span>
<span class="line" id="L367"> wip.setExtra(<span class="tok-number">0</span>, ErrorMessageList{</span>
<span class="line" id="L368"> .len = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(wip.root_list.items.len)),</span>
<span class="line" id="L369"> .start = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(wip.extra.items.len)),</span>
<span class="line" id="L370"> .compile_log_text = compile_log_str_index,</span>
<span class="line" id="L371"> });</span>
<span class="line" id="L372"> <span class="tok-kw">try</span> wip.extra.appendSlice(gpa, <span class="tok-builtin">@as</span>([]<span class="tok-kw">const</span> <span class="tok-type">u32</span>, <span class="tok-builtin">@ptrCast</span>(wip.root_list.items)));</span>
<span class="line" id="L373"> wip.root_list.clearAndFree(gpa);</span>
<span class="line" id="L374"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L375"> .string_bytes = <span class="tok-kw">try</span> wip.string_bytes.toOwnedSlice(gpa),</span>
<span class="line" id="L376"> .extra = <span class="tok-kw">try</span> wip.extra.toOwnedSlice(gpa),</span>
<span class="line" id="L377"> };</span>
<span class="line" id="L378"> }</span>
<span class="line" id="L379"></span>
<span class="line" id="L380"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">tmpBundle</span>(wip: Wip) ErrorBundle {</span>
<span class="line" id="L381"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L382"> .string_bytes = wip.string_bytes.items,</span>
<span class="line" id="L383"> .extra = wip.extra.items,</span>
<span class="line" id="L384"> };</span>
<span class="line" id="L385"> }</span>
<span class="line" id="L386"></span>
<span class="line" id="L387"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addString</span>(wip: *Wip, s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">u32</span> {</span>
<span class="line" id="L388"> <span class="tok-kw">const</span> gpa = wip.gpa;</span>
<span class="line" id="L389"> <span class="tok-kw">const</span> index = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(wip.string_bytes.items.len));</span>
<span class="line" id="L390"> <span class="tok-kw">try</span> wip.string_bytes.ensureUnusedCapacity(gpa, s.len + <span class="tok-number">1</span>);</span>
<span class="line" id="L391"> wip.string_bytes.appendSliceAssumeCapacity(s);</span>
<span class="line" id="L392"> wip.string_bytes.appendAssumeCapacity(<span class="tok-number">0</span>);</span>
<span class="line" id="L393"> <span class="tok-kw">return</span> index;</span>
<span class="line" id="L394"> }</span>
<span class="line" id="L395"></span>
<span class="line" id="L396"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">printString</span>(wip: *Wip, <span class="tok-kw">comptime</span> fmt: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, args: <span class="tok-kw">anytype</span>) !<span class="tok-type">u32</span> {</span>
<span class="line" id="L397"> <span class="tok-kw">const</span> gpa = wip.gpa;</span>
<span class="line" id="L398"> <span class="tok-kw">const</span> index = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(wip.string_bytes.items.len));</span>
<span class="line" id="L399"> <span class="tok-kw">try</span> wip.string_bytes.writer(gpa).print(fmt, args);</span>
<span class="line" id="L400"> <span class="tok-kw">try</span> wip.string_bytes.append(gpa, <span class="tok-number">0</span>);</span>
<span class="line" id="L401"> <span class="tok-kw">return</span> index;</span>
<span class="line" id="L402"> }</span>
<span class="line" id="L403"></span>
<span class="line" id="L404"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addRootErrorMessage</span>(wip: *Wip, em: ErrorMessage) !<span class="tok-type">void</span> {</span>
<span class="line" id="L405"> <span class="tok-kw">try</span> wip.root_list.ensureUnusedCapacity(wip.gpa, <span class="tok-number">1</span>);</span>
<span class="line" id="L406"> wip.root_list.appendAssumeCapacity(<span class="tok-kw">try</span> addErrorMessage(wip, em));</span>
<span class="line" id="L407"> }</span>
<span class="line" id="L408"></span>
<span class="line" id="L409"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addErrorMessage</span>(wip: *Wip, em: ErrorMessage) !MessageIndex {</span>
<span class="line" id="L410"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(MessageIndex, <span class="tok-builtin">@enumFromInt</span>(<span class="tok-kw">try</span> addExtra(wip, em)));</span>
<span class="line" id="L411"> }</span>
<span class="line" id="L412"></span>
<span class="line" id="L413"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addErrorMessageAssumeCapacity</span>(wip: *Wip, em: ErrorMessage) MessageIndex {</span>
<span class="line" id="L414"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(MessageIndex, <span class="tok-builtin">@enumFromInt</span>(addExtraAssumeCapacity(wip, em)));</span>
<span class="line" id="L415"> }</span>
<span class="line" id="L416"></span>
<span class="line" id="L417"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addSourceLocation</span>(wip: *Wip, sl: SourceLocation) !SourceLocationIndex {</span>
<span class="line" id="L418"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(SourceLocationIndex, <span class="tok-builtin">@enumFromInt</span>(<span class="tok-kw">try</span> addExtra(wip, sl)));</span>
<span class="line" id="L419"> }</span>
<span class="line" id="L420"></span>
<span class="line" id="L421"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addReferenceTrace</span>(wip: *Wip, rt: ReferenceTrace) !<span class="tok-type">void</span> {</span>
<span class="line" id="L422"> _ = <span class="tok-kw">try</span> addExtra(wip, rt);</span>
<span class="line" id="L423"> }</span>
<span class="line" id="L424"></span>
<span class="line" id="L425"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addBundle</span>(wip: *Wip, other: ErrorBundle) !<span class="tok-type">void</span> {</span>
<span class="line" id="L426"> <span class="tok-kw">const</span> gpa = wip.gpa;</span>
<span class="line" id="L427"></span>
<span class="line" id="L428"> <span class="tok-kw">try</span> wip.string_bytes.ensureUnusedCapacity(gpa, other.string_bytes.len);</span>
<span class="line" id="L429"> <span class="tok-kw">try</span> wip.extra.ensureUnusedCapacity(gpa, other.extra.len);</span>
<span class="line" id="L430"></span>
<span class="line" id="L431"> <span class="tok-kw">const</span> other_list = other.getMessages();</span>
<span class="line" id="L432"></span>
<span class="line" id="L433"> <span class="tok-comment">// The ensureUnusedCapacity call above guarantees this.</span>
</span>
<span class="line" id="L434"> <span class="tok-kw">const</span> notes_start = wip.reserveNotes(<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(other_list.len))) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L435"> <span class="tok-kw">for</span> (notes_start.., other_list) |note, message| {</span>
<span class="line" id="L436"> wip.extra.items[note] = <span class="tok-builtin">@intFromEnum</span>(wip.addOtherMessage(other, message) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>);</span>
<span class="line" id="L437"> }</span>
<span class="line" id="L438"> }</span>
<span class="line" id="L439"></span>
<span class="line" id="L440"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reserveNotes</span>(wip: *Wip, notes_len: <span class="tok-type">u32</span>) !<span class="tok-type">u32</span> {</span>
<span class="line" id="L441"> <span class="tok-kw">try</span> wip.extra.ensureUnusedCapacity(wip.gpa, notes_len +</span>
<span class="line" id="L442"> notes_len * <span class="tok-builtin">@typeInfo</span>(ErrorBundle.ErrorMessage).Struct.fields.len);</span>
<span class="line" id="L443"> wip.extra.items.len += notes_len;</span>
<span class="line" id="L444"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(wip.extra.items.len - notes_len));</span>
<span class="line" id="L445"> }</span>
<span class="line" id="L446"></span>
<span class="line" id="L447"> <span class="tok-kw">fn</span> <span class="tok-fn">addOtherMessage</span>(wip: *Wip, other: ErrorBundle, msg_index: MessageIndex) !MessageIndex {</span>
<span class="line" id="L448"> <span class="tok-kw">const</span> other_msg = other.getErrorMessage(msg_index);</span>
<span class="line" id="L449"> <span class="tok-kw">const</span> src_loc = <span class="tok-kw">try</span> wip.addOtherSourceLocation(other, other_msg.src_loc);</span>
<span class="line" id="L450"> <span class="tok-kw">const</span> msg = <span class="tok-kw">try</span> wip.addErrorMessage(.{</span>
<span class="line" id="L451"> .msg = <span class="tok-kw">try</span> wip.addString(other.nullTerminatedString(other_msg.msg)),</span>
<span class="line" id="L452"> .count = other_msg.count,</span>
<span class="line" id="L453"> .src_loc = src_loc,</span>
<span class="line" id="L454"> .notes_len = other_msg.notes_len,</span>
<span class="line" id="L455"> });</span>
<span class="line" id="L456"> <span class="tok-kw">const</span> notes_start = <span class="tok-kw">try</span> wip.reserveNotes(other_msg.notes_len);</span>
<span class="line" id="L457"> <span class="tok-kw">for</span> (notes_start.., other.getNotes(msg_index)) |note, other_note| {</span>
<span class="line" id="L458"> wip.extra.items[note] = <span class="tok-builtin">@intFromEnum</span>(<span class="tok-kw">try</span> wip.addOtherMessage(other, other_note));</span>
<span class="line" id="L459"> }</span>
<span class="line" id="L460"> <span class="tok-kw">return</span> msg;</span>
<span class="line" id="L461"> }</span>
<span class="line" id="L462"></span>
<span class="line" id="L463"> <span class="tok-kw">fn</span> <span class="tok-fn">addOtherSourceLocation</span>(</span>
<span class="line" id="L464"> wip: *Wip,</span>
<span class="line" id="L465"> other: ErrorBundle,</span>
<span class="line" id="L466"> index: SourceLocationIndex,</span>
<span class="line" id="L467"> ) !SourceLocationIndex {</span>
<span class="line" id="L468"> <span class="tok-kw">if</span> (index == .none) <span class="tok-kw">return</span> .none;</span>
<span class="line" id="L469"> <span class="tok-kw">const</span> other_sl = other.getSourceLocation(index);</span>
<span class="line" id="L470"></span>
<span class="line" id="L471"> <span class="tok-kw">const</span> src_loc = <span class="tok-kw">try</span> wip.addSourceLocation(.{</span>
<span class="line" id="L472"> .src_path = <span class="tok-kw">try</span> wip.addString(other.nullTerminatedString(other_sl.src_path)),</span>
<span class="line" id="L473"> .line = other_sl.line,</span>
<span class="line" id="L474"> .column = other_sl.column,</span>
<span class="line" id="L475"> .span_start = other_sl.span_start,</span>
<span class="line" id="L476"> .span_main = other_sl.span_main,</span>
<span class="line" id="L477"> .span_end = other_sl.span_end,</span>
<span class="line" id="L478"> .source_line = <span class="tok-kw">try</span> wip.addString(other.nullTerminatedString(other_sl.source_line)),</span>
<span class="line" id="L479"> .reference_trace_len = other_sl.reference_trace_len,</span>
<span class="line" id="L480"> });</span>
<span class="line" id="L481"></span>
<span class="line" id="L482"> <span class="tok-comment">// TODO: also add the reference trace</span>
</span>
<span class="line" id="L483"></span>
<span class="line" id="L484"> <span class="tok-kw">return</span> src_loc;</span>
<span class="line" id="L485"> }</span>
<span class="line" id="L486"></span>
<span class="line" id="L487"> <span class="tok-kw">fn</span> <span class="tok-fn">addExtra</span>(wip: *Wip, extra: <span class="tok-kw">anytype</span>) Allocator.Error!<span class="tok-type">u32</span> {</span>
<span class="line" id="L488"> <span class="tok-kw">const</span> gpa = wip.gpa;</span>
<span class="line" id="L489"> <span class="tok-kw">const</span> fields = <span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(extra)).Struct.fields;</span>
<span class="line" id="L490"> <span class="tok-kw">try</span> wip.extra.ensureUnusedCapacity(gpa, fields.len);</span>
<span class="line" id="L491"> <span class="tok-kw">return</span> addExtraAssumeCapacity(wip, extra);</span>
<span class="line" id="L492"> }</span>
<span class="line" id="L493"></span>
<span class="line" id="L494"> <span class="tok-kw">fn</span> <span class="tok-fn">addExtraAssumeCapacity</span>(wip: *Wip, extra: <span class="tok-kw">anytype</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L495"> <span class="tok-kw">const</span> fields = <span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(extra)).Struct.fields;</span>
<span class="line" id="L496"> <span class="tok-kw">const</span> result = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(wip.extra.items.len));</span>
<span class="line" id="L497"> wip.extra.items.len += fields.len;</span>
<span class="line" id="L498"> setExtra(wip, result, extra);</span>
<span class="line" id="L499"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L500"> }</span>
<span class="line" id="L501"></span>
<span class="line" id="L502"> <span class="tok-kw">fn</span> <span class="tok-fn">setExtra</span>(wip: *Wip, index: <span class="tok-type">usize</span>, extra: <span class="tok-kw">anytype</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L503"> <span class="tok-kw">const</span> fields = <span class="tok-builtin">@typeInfo</span>(<span class="tok-builtin">@TypeOf</span>(extra)).Struct.fields;</span>
<span class="line" id="L504"> <span class="tok-kw">var</span> i = index;</span>
<span class="line" id="L505"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (fields) |field| {</span>
<span class="line" id="L506"> wip.extra.items[i] = <span class="tok-kw">switch</span> (field.<span class="tok-type">type</span>) {</span>
<span class="line" id="L507"> <span class="tok-type">u32</span> => <span class="tok-builtin">@field</span>(extra, field.name),</span>
<span class="line" id="L508"> MessageIndex => <span class="tok-builtin">@intFromEnum</span>(<span class="tok-builtin">@field</span>(extra, field.name)),</span>
<span class="line" id="L509"> SourceLocationIndex => <span class="tok-builtin">@intFromEnum</span>(<span class="tok-builtin">@field</span>(extra, field.name)),</span>
<span class="line" id="L510"> <span class="tok-kw">else</span> => <span class="tok-builtin">@compileError</span>(<span class="tok-str">"bad field type"</span>),</span>
<span class="line" id="L511"> };</span>
<span class="line" id="L512"> i += <span class="tok-number">1</span>;</span>
<span class="line" id="L513"> }</span>
<span class="line" id="L514"> }</span>
<span class="line" id="L515">};</span>
<span class="line" id="L516"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L3"></span>
<span class="line" id="L4"><span class="tok-comment">/// Print the string as a Zig identifier escaping it with @"" syntax if needed.</span></span>
<span class="line" id="L5"><span class="tok-kw">fn</span> <span class="tok-fn">formatId</span>(</span>
<span class="line" id="L6"> bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L7"> <span class="tok-kw">comptime</span> fmt: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L8"> options: std.fmt.FormatOptions,</span>
<span class="line" id="L9"> writer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L10">) !<span class="tok-type">void</span> {</span>
<span class="line" id="L11"> _ = fmt;</span>
<span class="line" id="L12"> <span class="tok-kw">if</span> (isValidId(bytes)) {</span>
<span class="line" id="L13"> <span class="tok-kw">return</span> writer.writeAll(bytes);</span>
<span class="line" id="L14"> }</span>
<span class="line" id="L15"> <span class="tok-kw">try</span> writer.writeAll(<span class="tok-str">"@\""</span>);</span>
<span class="line" id="L16"> <span class="tok-kw">try</span> formatEscapes(bytes, <span class="tok-str">""</span>, options, writer);</span>
<span class="line" id="L17"> <span class="tok-kw">try</span> writer.writeByte(<span class="tok-str">'"'</span>);</span>
<span class="line" id="L18">}</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"><span class="tok-comment">/// Return a Formatter for a Zig identifier</span></span>
<span class="line" id="L21"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fmtId</span>(bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) std.fmt.Formatter(formatId) {</span>
<span class="line" id="L22"> <span class="tok-kw">return</span> .{ .data = bytes };</span>
<span class="line" id="L23">}</span>
<span class="line" id="L24"></span>
<span class="line" id="L25"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isValidId</span>(bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L26"> <span class="tok-kw">if</span> (bytes.len == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L27"> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, bytes, <span class="tok-str">"_"</span>)) <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L28"> <span class="tok-kw">for</span> (bytes, <span class="tok-number">0</span>..) |c, i| {</span>
<span class="line" id="L29"> <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L30"> <span class="tok-str">'_'</span>, <span class="tok-str">'a'</span>...<span class="tok-str">'z'</span>, <span class="tok-str">'A'</span>...<span class="tok-str">'Z'</span> => {},</span>
<span class="line" id="L31"> <span class="tok-str">'0'</span>...<span class="tok-str">'9'</span> => <span class="tok-kw">if</span> (i == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-null">false</span>,</span>
<span class="line" id="L32"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-null">false</span>,</span>
<span class="line" id="L33"> }</span>
<span class="line" id="L34"> }</span>
<span class="line" id="L35"> <span class="tok-kw">return</span> std.zig.Token.getKeyword(bytes) == <span class="tok-null">null</span>;</span>
<span class="line" id="L36">}</span>
<span class="line" id="L37"></span>
<span class="line" id="L38"><span class="tok-kw">test</span> <span class="tok-str">"isValidId"</span> {</span>
<span class="line" id="L39"> <span class="tok-kw">try</span> std.testing.expect(!isValidId(<span class="tok-str">""</span>));</span>
<span class="line" id="L40"> <span class="tok-kw">try</span> std.testing.expect(isValidId(<span class="tok-str">"foobar"</span>));</span>
<span class="line" id="L41"> <span class="tok-kw">try</span> std.testing.expect(!isValidId(<span class="tok-str">"a b c"</span>));</span>
<span class="line" id="L42"> <span class="tok-kw">try</span> std.testing.expect(!isValidId(<span class="tok-str">"3d"</span>));</span>
<span class="line" id="L43"> <span class="tok-kw">try</span> std.testing.expect(!isValidId(<span class="tok-str">"enum"</span>));</span>
<span class="line" id="L44"> <span class="tok-kw">try</span> std.testing.expect(isValidId(<span class="tok-str">"i386"</span>));</span>
<span class="line" id="L45">}</span>
<span class="line" id="L46"></span>
<span class="line" id="L47"><span class="tok-comment">/// Print the string as escaped contents of a double quoted or single-quoted string.</span></span>
<span class="line" id="L48"><span class="tok-comment">/// Format `{}` treats contents as a double-quoted string.</span></span>
<span class="line" id="L49"><span class="tok-comment">/// Format `{'}` treats contents as a single-quoted string.</span></span>
<span class="line" id="L50"><span class="tok-kw">fn</span> <span class="tok-fn">formatEscapes</span>(</span>
<span class="line" id="L51"> bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L52"> <span class="tok-kw">comptime</span> fmt: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L53"> options: std.fmt.FormatOptions,</span>
<span class="line" id="L54"> writer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L55">) !<span class="tok-type">void</span> {</span>
<span class="line" id="L56"> _ = options;</span>
<span class="line" id="L57"> <span class="tok-kw">for</span> (bytes) |byte| <span class="tok-kw">switch</span> (byte) {</span>
<span class="line" id="L58"> <span class="tok-str">'\n'</span> => <span class="tok-kw">try</span> writer.writeAll(<span class="tok-str">"\\n"</span>),</span>
<span class="line" id="L59"> <span class="tok-str">'\r'</span> => <span class="tok-kw">try</span> writer.writeAll(<span class="tok-str">"\\r"</span>),</span>
<span class="line" id="L60"> <span class="tok-str">'\t'</span> => <span class="tok-kw">try</span> writer.writeAll(<span class="tok-str">"\\t"</span>),</span>
<span class="line" id="L61"> <span class="tok-str">'\\'</span> => <span class="tok-kw">try</span> writer.writeAll(<span class="tok-str">"\\\\"</span>),</span>
<span class="line" id="L62"> <span class="tok-str">'"'</span> => {</span>
<span class="line" id="L63"> <span class="tok-kw">if</span> (fmt.len == <span class="tok-number">1</span> <span class="tok-kw">and</span> fmt[<span class="tok-number">0</span>] == <span class="tok-str">'\''</span>) {</span>
<span class="line" id="L64"> <span class="tok-kw">try</span> writer.writeByte(<span class="tok-str">'"'</span>);</span>
<span class="line" id="L65"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (fmt.len == <span class="tok-number">0</span>) {</span>
<span class="line" id="L66"> <span class="tok-kw">try</span> writer.writeAll(<span class="tok-str">"\\\""</span>);</span>
<span class="line" id="L67"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L68"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"expected {} or {'}, found {"</span> ++ fmt ++ <span class="tok-str">"}"</span>);</span>
<span class="line" id="L69"> }</span>
<span class="line" id="L70"> },</span>
<span class="line" id="L71"> <span class="tok-str">'\''</span> => {</span>
<span class="line" id="L72"> <span class="tok-kw">if</span> (fmt.len == <span class="tok-number">1</span> <span class="tok-kw">and</span> fmt[<span class="tok-number">0</span>] == <span class="tok-str">'\''</span>) {</span>
<span class="line" id="L73"> <span class="tok-kw">try</span> writer.writeAll(<span class="tok-str">"\\'"</span>);</span>
<span class="line" id="L74"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (fmt.len == <span class="tok-number">0</span>) {</span>
<span class="line" id="L75"> <span class="tok-kw">try</span> writer.writeByte(<span class="tok-str">'\''</span>);</span>
<span class="line" id="L76"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L77"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"expected {} or {'}, found {"</span> ++ fmt ++ <span class="tok-str">"}"</span>);</span>
<span class="line" id="L78"> }</span>
<span class="line" id="L79"> },</span>
<span class="line" id="L80"> <span class="tok-str">' '</span>, <span class="tok-str">'!'</span>, <span class="tok-str">'#'</span>...<span class="tok-str">'&'</span>, <span class="tok-str">'('</span>...<span class="tok-str">'['</span>, <span class="tok-str">']'</span>...<span class="tok-str">'~'</span> => <span class="tok-kw">try</span> writer.writeByte(byte),</span>
<span class="line" id="L81"> <span class="tok-comment">// Use hex escapes for rest any unprintable characters.</span>
</span>
<span class="line" id="L82"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L83"> <span class="tok-kw">try</span> writer.writeAll(<span class="tok-str">"\\x"</span>);</span>
<span class="line" id="L84"> <span class="tok-kw">try</span> std.fmt.formatInt(byte, <span class="tok-number">16</span>, .lower, .{ .width = <span class="tok-number">2</span>, .fill = <span class="tok-str">'0'</span> }, writer);</span>
<span class="line" id="L85"> },</span>
<span class="line" id="L86"> };</span>
<span class="line" id="L87">}</span>
<span class="line" id="L88"></span>
<span class="line" id="L89"><span class="tok-comment">/// Return a Formatter for Zig Escapes of a double quoted string.</span></span>
<span class="line" id="L90"><span class="tok-comment">/// The format specifier must be one of:</span></span>
<span class="line" id="L91"><span class="tok-comment">/// * `{}` treats contents as a double-quoted string.</span></span>
<span class="line" id="L92"><span class="tok-comment">/// * `{'}` treats contents as a single-quoted string.</span></span>
<span class="line" id="L93"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fmtEscapes</span>(bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) std.fmt.Formatter(formatEscapes) {</span>
<span class="line" id="L94"> <span class="tok-kw">return</span> .{ .data = bytes };</span>
<span class="line" id="L95">}</span>
<span class="line" id="L96"></span>
<span class="line" id="L97"><span class="tok-kw">test</span> <span class="tok-str">"escape invalid identifiers"</span> {</span>
<span class="line" id="L98"> <span class="tok-kw">const</span> expectFmt = std.testing.expectFmt;</span>
<span class="line" id="L99"> <span class="tok-kw">try</span> expectFmt(<span class="tok-str">"@\"while\""</span>, <span class="tok-str">"{}"</span>, .{fmtId(<span class="tok-str">"while"</span>)});</span>
<span class="line" id="L100"> <span class="tok-kw">try</span> expectFmt(<span class="tok-str">"hello"</span>, <span class="tok-str">"{}"</span>, .{fmtId(<span class="tok-str">"hello"</span>)});</span>
<span class="line" id="L101"> <span class="tok-kw">try</span> expectFmt(<span class="tok-str">"@\"11\\\"23\""</span>, <span class="tok-str">"{}"</span>, .{fmtId(<span class="tok-str">"11\"23"</span>)});</span>
<span class="line" id="L102"> <span class="tok-kw">try</span> expectFmt(<span class="tok-str">"@\"11\\x0f23\""</span>, <span class="tok-str">"{}"</span>, .{fmtId(<span class="tok-str">"11\x0F23"</span>)});</span>
<span class="line" id="L103"> <span class="tok-kw">try</span> expectFmt(<span class="tok-str">"\\x0f"</span>, <span class="tok-str">"{}"</span>, .{fmtEscapes(<span class="tok-str">"\x0f"</span>)});</span>
<span class="line" id="L104"> <span class="tok-kw">try</span> expectFmt(</span>
<span class="line" id="L105"> <span class="tok-str">\\" \\ hi \x07 \x11 " derp \'"</span></span>
<span class="line" id="L106"> , <span class="tok-str">"\"{'}\""</span>, .{fmtEscapes(<span class="tok-str">" \\ hi \x07 \x11 \" derp '"</span>)});</span>
<span class="line" id="L107"> <span class="tok-kw">try</span> expectFmt(</span>
<span class="line" id="L108"> <span class="tok-str">\\" \\ hi \x07 \x11 \" derp '"</span></span>
<span class="line" id="L109"> , <span class="tok-str">"\"{}\""</span>, .{fmtEscapes(<span class="tok-str">" \\ hi \x07 \x11 \" derp '"</span>)});</span>
<span class="line" id="L110">}</span>
<span class="line" id="L111"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! Represents in-progress parsing, will be converted to an Ast after completion.</span></span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = <span class="tok-kw">error</span>{ParseError} || Allocator.Error;</span>
<span class="line" id="L4"></span>
<span class="line" id="L5">gpa: Allocator,</span>
<span class="line" id="L6">source: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L7">token_tags: []<span class="tok-kw">const</span> Token.Tag,</span>
<span class="line" id="L8">token_starts: []<span class="tok-kw">const</span> Ast.ByteOffset,</span>
<span class="line" id="L9">tok_i: TokenIndex,</span>
<span class="line" id="L10">errors: std.ArrayListUnmanaged(AstError),</span>
<span class="line" id="L11">nodes: Ast.NodeList,</span>
<span class="line" id="L12">extra_data: std.ArrayListUnmanaged(Node.Index),</span>
<span class="line" id="L13">scratch: std.ArrayListUnmanaged(Node.Index),</span>
<span class="line" id="L14"></span>
<span class="line" id="L15"><span class="tok-kw">const</span> SmallSpan = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L16"> zero_or_one: Node.Index,</span>
<span class="line" id="L17"> multi: Node.SubRange,</span>
<span class="line" id="L18">};</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"><span class="tok-kw">const</span> Members = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L21"> len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L22"> lhs: Node.Index,</span>
<span class="line" id="L23"> rhs: Node.Index,</span>
<span class="line" id="L24"> trailing: <span class="tok-type">bool</span>,</span>
<span class="line" id="L25"></span>
<span class="line" id="L26"> <span class="tok-kw">fn</span> <span class="tok-fn">toSpan</span>(self: Members, p: *Parse) !Node.SubRange {</span>
<span class="line" id="L27"> <span class="tok-kw">if</span> (self.len <= <span class="tok-number">2</span>) {</span>
<span class="line" id="L28"> <span class="tok-kw">const</span> nodes = [<span class="tok-number">2</span>]Node.Index{ self.lhs, self.rhs };</span>
<span class="line" id="L29"> <span class="tok-kw">return</span> p.listToSpan(nodes[<span class="tok-number">0</span>..self.len]);</span>
<span class="line" id="L30"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L31"> <span class="tok-kw">return</span> Node.SubRange{ .start = self.lhs, .end = self.rhs };</span>
<span class="line" id="L32"> }</span>
<span class="line" id="L33"> }</span>
<span class="line" id="L34">};</span>
<span class="line" id="L35"></span>
<span class="line" id="L36"><span class="tok-kw">fn</span> <span class="tok-fn">listToSpan</span>(p: *Parse, list: []<span class="tok-kw">const</span> Node.Index) !Node.SubRange {</span>
<span class="line" id="L37"> <span class="tok-kw">try</span> p.extra_data.appendSlice(p.gpa, list);</span>
<span class="line" id="L38"> <span class="tok-kw">return</span> Node.SubRange{</span>
<span class="line" id="L39"> .start = <span class="tok-builtin">@as</span>(Node.Index, <span class="tok-builtin">@intCast</span>(p.extra_data.items.len - list.len)),</span>
<span class="line" id="L40"> .end = <span class="tok-builtin">@as</span>(Node.Index, <span class="tok-builtin">@intCast</span>(p.extra_data.items.len)),</span>
<span class="line" id="L41"> };</span>
<span class="line" id="L42">}</span>
<span class="line" id="L43"></span>
<span class="line" id="L44"><span class="tok-kw">fn</span> <span class="tok-fn">addNode</span>(p: *Parse, elem: Ast.Node) Allocator.Error!Node.Index {</span>
<span class="line" id="L45"> <span class="tok-kw">const</span> result = <span class="tok-builtin">@as</span>(Node.Index, <span class="tok-builtin">@intCast</span>(p.nodes.len));</span>
<span class="line" id="L46"> <span class="tok-kw">try</span> p.nodes.append(p.gpa, elem);</span>
<span class="line" id="L47"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L48">}</span>
<span class="line" id="L49"></span>
<span class="line" id="L50"><span class="tok-kw">fn</span> <span class="tok-fn">setNode</span>(p: *Parse, i: <span class="tok-type">usize</span>, elem: Ast.Node) Node.Index {</span>
<span class="line" id="L51"> p.nodes.set(i, elem);</span>
<span class="line" id="L52"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(Node.Index, <span class="tok-builtin">@intCast</span>(i));</span>
<span class="line" id="L53">}</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"><span class="tok-kw">fn</span> <span class="tok-fn">reserveNode</span>(p: *Parse, tag: Ast.Node.Tag) !<span class="tok-type">usize</span> {</span>
<span class="line" id="L56"> <span class="tok-kw">try</span> p.nodes.resize(p.gpa, p.nodes.len + <span class="tok-number">1</span>);</span>
<span class="line" id="L57"> p.nodes.items(.tag)[p.nodes.len - <span class="tok-number">1</span>] = tag;</span>
<span class="line" id="L58"> <span class="tok-kw">return</span> p.nodes.len - <span class="tok-number">1</span>;</span>
<span class="line" id="L59">}</span>
<span class="line" id="L60"></span>
<span class="line" id="L61"><span class="tok-kw">fn</span> <span class="tok-fn">unreserveNode</span>(p: *Parse, node_index: <span class="tok-type">usize</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L62"> <span class="tok-kw">if</span> (p.nodes.len == node_index) {</span>
<span class="line" id="L63"> p.nodes.resize(p.gpa, p.nodes.len - <span class="tok-number">1</span>) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L64"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L65"> <span class="tok-comment">// There is zombie node left in the tree, let's make it as inoffensive as possible</span>
</span>
<span class="line" id="L66"> <span class="tok-comment">// (sadly there's no no-op node)</span>
</span>
<span class="line" id="L67"> p.nodes.items(.tag)[node_index] = .unreachable_literal;</span>
<span class="line" id="L68"> p.nodes.items(.main_token)[node_index] = p.tok_i;</span>
<span class="line" id="L69"> }</span>
<span class="line" id="L70">}</span>
<span class="line" id="L71"></span>
<span class="line" id="L72"><span class="tok-kw">fn</span> <span class="tok-fn">addExtra</span>(p: *Parse, extra: <span class="tok-kw">anytype</span>) Allocator.Error!Node.Index {</span>
<span class="line" id="L73"> <span class="tok-kw">const</span> fields = std.meta.fields(<span class="tok-builtin">@TypeOf</span>(extra));</span>
<span class="line" id="L74"> <span class="tok-kw">try</span> p.extra_data.ensureUnusedCapacity(p.gpa, fields.len);</span>
<span class="line" id="L75"> <span class="tok-kw">const</span> result = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(p.extra_data.items.len));</span>
<span class="line" id="L76"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (fields) |field| {</span>
<span class="line" id="L77"> <span class="tok-kw">comptime</span> assert(field.<span class="tok-type">type</span> == Node.Index);</span>
<span class="line" id="L78"> p.extra_data.appendAssumeCapacity(<span class="tok-builtin">@field</span>(extra, field.name));</span>
<span class="line" id="L79"> }</span>
<span class="line" id="L80"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L81">}</span>
<span class="line" id="L82"></span>
<span class="line" id="L83"><span class="tok-kw">fn</span> <span class="tok-fn">warnExpected</span>(p: *Parse, expected_token: Token.Tag) <span class="tok-kw">error</span>{OutOfMemory}!<span class="tok-type">void</span> {</span>
<span class="line" id="L84"> <span class="tok-builtin">@setCold</span>(<span class="tok-null">true</span>);</span>
<span class="line" id="L85"> <span class="tok-kw">try</span> p.warnMsg(.{</span>
<span class="line" id="L86"> .tag = .expected_token,</span>
<span class="line" id="L87"> .token = p.tok_i,</span>
<span class="line" id="L88"> .extra = .{ .expected_tag = expected_token },</span>
<span class="line" id="L89"> });</span>
<span class="line" id="L90">}</span>
<span class="line" id="L91"></span>
<span class="line" id="L92"><span class="tok-kw">fn</span> <span class="tok-fn">warn</span>(p: *Parse, error_tag: AstError.Tag) <span class="tok-kw">error</span>{OutOfMemory}!<span class="tok-type">void</span> {</span>
<span class="line" id="L93"> <span class="tok-builtin">@setCold</span>(<span class="tok-null">true</span>);</span>
<span class="line" id="L94"> <span class="tok-kw">try</span> p.warnMsg(.{ .tag = error_tag, .token = p.tok_i });</span>
<span class="line" id="L95">}</span>
<span class="line" id="L96"></span>
<span class="line" id="L97"><span class="tok-kw">fn</span> <span class="tok-fn">warnMsg</span>(p: *Parse, msg: Ast.Error) <span class="tok-kw">error</span>{OutOfMemory}!<span class="tok-type">void</span> {</span>
<span class="line" id="L98"> <span class="tok-builtin">@setCold</span>(<span class="tok-null">true</span>);</span>
<span class="line" id="L99"> <span class="tok-kw">switch</span> (msg.tag) {</span>
<span class="line" id="L100"> .expected_semi_after_decl,</span>
<span class="line" id="L101"> .expected_semi_after_stmt,</span>
<span class="line" id="L102"> .expected_comma_after_field,</span>
<span class="line" id="L103"> .expected_comma_after_arg,</span>
<span class="line" id="L104"> .expected_comma_after_param,</span>
<span class="line" id="L105"> .expected_comma_after_initializer,</span>
<span class="line" id="L106"> .expected_comma_after_switch_prong,</span>
<span class="line" id="L107"> .expected_comma_after_for_operand,</span>
<span class="line" id="L108"> .expected_comma_after_capture,</span>
<span class="line" id="L109"> .expected_semi_or_else,</span>
<span class="line" id="L110"> .expected_semi_or_lbrace,</span>
<span class="line" id="L111"> .expected_token,</span>
<span class="line" id="L112"> .expected_block,</span>
<span class="line" id="L113"> .expected_block_or_assignment,</span>
<span class="line" id="L114"> .expected_block_or_expr,</span>
<span class="line" id="L115"> .expected_block_or_field,</span>
<span class="line" id="L116"> .expected_expr,</span>
<span class="line" id="L117"> .expected_expr_or_assignment,</span>
<span class="line" id="L118"> .expected_fn,</span>
<span class="line" id="L119"> .expected_inlinable,</span>
<span class="line" id="L120"> .expected_labelable,</span>
<span class="line" id="L121"> .expected_param_list,</span>
<span class="line" id="L122"> .expected_prefix_expr,</span>
<span class="line" id="L123"> .expected_primary_type_expr,</span>
<span class="line" id="L124"> .expected_pub_item,</span>
<span class="line" id="L125"> .expected_return_type,</span>
<span class="line" id="L126"> .expected_suffix_op,</span>
<span class="line" id="L127"> .expected_type_expr,</span>
<span class="line" id="L128"> .expected_var_decl,</span>
<span class="line" id="L129"> .expected_var_decl_or_fn,</span>
<span class="line" id="L130"> .expected_loop_payload,</span>
<span class="line" id="L131"> .expected_container,</span>
<span class="line" id="L132"> => <span class="tok-kw">if</span> (msg.token != <span class="tok-number">0</span> <span class="tok-kw">and</span> !p.tokensOnSameLine(msg.token - <span class="tok-number">1</span>, msg.token)) {</span>
<span class="line" id="L133"> <span class="tok-kw">var</span> copy = msg;</span>
<span class="line" id="L134"> copy.token_is_prev = <span class="tok-null">true</span>;</span>
<span class="line" id="L135"> copy.token -= <span class="tok-number">1</span>;</span>
<span class="line" id="L136"> <span class="tok-kw">return</span> p.errors.append(p.gpa, copy);</span>
<span class="line" id="L137"> },</span>
<span class="line" id="L138"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L139"> }</span>
<span class="line" id="L140"> <span class="tok-kw">try</span> p.errors.append(p.gpa, msg);</span>
<span class="line" id="L141">}</span>
<span class="line" id="L142"></span>
<span class="line" id="L143"><span class="tok-kw">fn</span> <span class="tok-fn">fail</span>(p: *Parse, tag: Ast.Error.Tag) <span class="tok-kw">error</span>{ ParseError, OutOfMemory } {</span>
<span class="line" id="L144"> <span class="tok-builtin">@setCold</span>(<span class="tok-null">true</span>);</span>
<span class="line" id="L145"> <span class="tok-kw">return</span> p.failMsg(.{ .tag = tag, .token = p.tok_i });</span>
<span class="line" id="L146">}</span>
<span class="line" id="L147"></span>
<span class="line" id="L148"><span class="tok-kw">fn</span> <span class="tok-fn">failExpected</span>(p: *Parse, expected_token: Token.Tag) <span class="tok-kw">error</span>{ ParseError, OutOfMemory } {</span>
<span class="line" id="L149"> <span class="tok-builtin">@setCold</span>(<span class="tok-null">true</span>);</span>
<span class="line" id="L150"> <span class="tok-kw">return</span> p.failMsg(.{</span>
<span class="line" id="L151"> .tag = .expected_token,</span>
<span class="line" id="L152"> .token = p.tok_i,</span>
<span class="line" id="L153"> .extra = .{ .expected_tag = expected_token },</span>
<span class="line" id="L154"> });</span>
<span class="line" id="L155">}</span>
<span class="line" id="L156"></span>
<span class="line" id="L157"><span class="tok-kw">fn</span> <span class="tok-fn">failMsg</span>(p: *Parse, msg: Ast.Error) <span class="tok-kw">error</span>{ ParseError, OutOfMemory } {</span>
<span class="line" id="L158"> <span class="tok-builtin">@setCold</span>(<span class="tok-null">true</span>);</span>
<span class="line" id="L159"> <span class="tok-kw">try</span> p.warnMsg(msg);</span>
<span class="line" id="L160"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ParseError;</span>
<span class="line" id="L161">}</span>
<span class="line" id="L162"></span>
<span class="line" id="L163"><span class="tok-comment">/// Root <- skip container_doc_comment? ContainerMembers eof</span></span>
<span class="line" id="L164"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parseRoot</span>(p: *Parse) !<span class="tok-type">void</span> {</span>
<span class="line" id="L165"> <span class="tok-comment">// Root node must be index 0.</span>
</span>
<span class="line" id="L166"> p.nodes.appendAssumeCapacity(.{</span>
<span class="line" id="L167"> .tag = .root,</span>
<span class="line" id="L168"> .main_token = <span class="tok-number">0</span>,</span>
<span class="line" id="L169"> .data = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L170"> });</span>
<span class="line" id="L171"> <span class="tok-kw">const</span> root_members = <span class="tok-kw">try</span> p.parseContainerMembers();</span>
<span class="line" id="L172"> <span class="tok-kw">const</span> root_decls = <span class="tok-kw">try</span> root_members.toSpan(p);</span>
<span class="line" id="L173"> <span class="tok-kw">if</span> (p.token_tags[p.tok_i] != .eof) {</span>
<span class="line" id="L174"> <span class="tok-kw">try</span> p.warnExpected(.eof);</span>
<span class="line" id="L175"> }</span>
<span class="line" id="L176"> p.nodes.items(.data)[<span class="tok-number">0</span>] = .{</span>
<span class="line" id="L177"> .lhs = root_decls.start,</span>
<span class="line" id="L178"> .rhs = root_decls.end,</span>
<span class="line" id="L179"> };</span>
<span class="line" id="L180">}</span>
<span class="line" id="L181"></span>
<span class="line" id="L182"><span class="tok-comment">/// Parse in ZON mode. Subset of the language.</span></span>
<span class="line" id="L183"><span class="tok-comment">/// TODO: set a flag in Parse struct, and honor that flag</span></span>
<span class="line" id="L184"><span class="tok-comment">/// by emitting compilation errors when non-zon nodes are encountered.</span></span>
<span class="line" id="L185"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parseZon</span>(p: *Parse) !<span class="tok-type">void</span> {</span>
<span class="line" id="L186"> <span class="tok-comment">// We must use index 0 so that 0 can be used as null elsewhere.</span>
</span>
<span class="line" id="L187"> p.nodes.appendAssumeCapacity(.{</span>
<span class="line" id="L188"> .tag = .root,</span>
<span class="line" id="L189"> .main_token = <span class="tok-number">0</span>,</span>
<span class="line" id="L190"> .data = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L191"> });</span>
<span class="line" id="L192"> <span class="tok-kw">const</span> node_index = p.expectExpr() <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L193"> <span class="tok-kw">error</span>.ParseError => {</span>
<span class="line" id="L194"> assert(p.errors.items.len > <span class="tok-number">0</span>);</span>
<span class="line" id="L195"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L196"> },</span>
<span class="line" id="L197"> <span class="tok-kw">else</span> => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L198"> };</span>
<span class="line" id="L199"> <span class="tok-kw">if</span> (p.token_tags[p.tok_i] != .eof) {</span>
<span class="line" id="L200"> <span class="tok-kw">try</span> p.warnExpected(.eof);</span>
<span class="line" id="L201"> }</span>
<span class="line" id="L202"> p.nodes.items(.data)[<span class="tok-number">0</span>] = .{</span>
<span class="line" id="L203"> .lhs = node_index,</span>
<span class="line" id="L204"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L205"> };</span>
<span class="line" id="L206">}</span>
<span class="line" id="L207"></span>
<span class="line" id="L208"><span class="tok-comment">/// ContainerMembers <- ContainerDeclarations (ContainerField COMMA)* (ContainerField / ContainerDeclarations)</span></span>
<span class="line" id="L209"><span class="tok-comment">///</span></span>
<span class="line" id="L210"><span class="tok-comment">/// ContainerDeclarations</span></span>
<span class="line" id="L211"><span class="tok-comment">/// <- TestDecl ContainerDeclarations</span></span>
<span class="line" id="L212"><span class="tok-comment">/// / ComptimeDecl ContainerDeclarations</span></span>
<span class="line" id="L213"><span class="tok-comment">/// / doc_comment? KEYWORD_pub? Decl ContainerDeclarations</span></span>
<span class="line" id="L214"><span class="tok-comment">/// /</span></span>
<span class="line" id="L215"><span class="tok-comment">///</span></span>
<span class="line" id="L216"><span class="tok-comment">/// ComptimeDecl <- KEYWORD_comptime Block</span></span>
<span class="line" id="L217"><span class="tok-kw">fn</span> <span class="tok-fn">parseContainerMembers</span>(p: *Parse) !Members {</span>
<span class="line" id="L218"> <span class="tok-kw">const</span> scratch_top = p.scratch.items.len;</span>
<span class="line" id="L219"> <span class="tok-kw">defer</span> p.scratch.shrinkRetainingCapacity(scratch_top);</span>
<span class="line" id="L220"></span>
<span class="line" id="L221"> <span class="tok-kw">var</span> field_state: <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L222"> <span class="tok-comment">/// No fields have been seen.</span></span>
<span class="line" id="L223"> none,</span>
<span class="line" id="L224"> <span class="tok-comment">/// Currently parsing fields.</span></span>
<span class="line" id="L225"> seen,</span>
<span class="line" id="L226"> <span class="tok-comment">/// Saw fields and then a declaration after them.</span></span>
<span class="line" id="L227"> <span class="tok-comment">/// Payload is first token of previous declaration.</span></span>
<span class="line" id="L228"> end: Node.Index,</span>
<span class="line" id="L229"> <span class="tok-comment">/// There was a declaration between fields, don't report more errors.</span></span>
<span class="line" id="L230"> err,</span>
<span class="line" id="L231"> } = .none;</span>
<span class="line" id="L232"></span>
<span class="line" id="L233"> <span class="tok-kw">var</span> last_field: TokenIndex = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L234"></span>
<span class="line" id="L235"> <span class="tok-comment">// Skip container doc comments.</span>
</span>
<span class="line" id="L236"> <span class="tok-kw">while</span> (p.eatToken(.container_doc_comment)) |_| {}</span>
<span class="line" id="L237"></span>
<span class="line" id="L238"> <span class="tok-kw">var</span> trailing = <span class="tok-null">false</span>;</span>
<span class="line" id="L239"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L240"> <span class="tok-kw">const</span> doc_comment = <span class="tok-kw">try</span> p.eatDocComments();</span>
<span class="line" id="L241"></span>
<span class="line" id="L242"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L243"> .keyword_test => {</span>
<span class="line" id="L244"> <span class="tok-kw">if</span> (doc_comment) |some| {</span>
<span class="line" id="L245"> <span class="tok-kw">try</span> p.warnMsg(.{ .tag = .test_doc_comment, .token = some });</span>
<span class="line" id="L246"> }</span>
<span class="line" id="L247"> <span class="tok-kw">const</span> test_decl_node = <span class="tok-kw">try</span> p.expectTestDeclRecoverable();</span>
<span class="line" id="L248"> <span class="tok-kw">if</span> (test_decl_node != <span class="tok-number">0</span>) {</span>
<span class="line" id="L249"> <span class="tok-kw">if</span> (field_state == .seen) {</span>
<span class="line" id="L250"> field_state = .{ .end = test_decl_node };</span>
<span class="line" id="L251"> }</span>
<span class="line" id="L252"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, test_decl_node);</span>
<span class="line" id="L253"> }</span>
<span class="line" id="L254"> trailing = <span class="tok-null">false</span>;</span>
<span class="line" id="L255"> },</span>
<span class="line" id="L256"> .keyword_comptime => <span class="tok-kw">switch</span> (p.token_tags[p.tok_i + <span class="tok-number">1</span>]) {</span>
<span class="line" id="L257"> .l_brace => {</span>
<span class="line" id="L258"> <span class="tok-kw">if</span> (doc_comment) |some| {</span>
<span class="line" id="L259"> <span class="tok-kw">try</span> p.warnMsg(.{ .tag = .comptime_doc_comment, .token = some });</span>
<span class="line" id="L260"> }</span>
<span class="line" id="L261"> <span class="tok-kw">const</span> comptime_token = p.nextToken();</span>
<span class="line" id="L262"> <span class="tok-kw">const</span> block = p.parseBlock() <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L263"> <span class="tok-kw">error</span>.OutOfMemory => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OutOfMemory,</span>
<span class="line" id="L264"> <span class="tok-kw">error</span>.ParseError => blk: {</span>
<span class="line" id="L265"> p.findNextContainerMember();</span>
<span class="line" id="L266"> <span class="tok-kw">break</span> :blk null_node;</span>
<span class="line" id="L267"> },</span>
<span class="line" id="L268"> };</span>
<span class="line" id="L269"> <span class="tok-kw">if</span> (block != <span class="tok-number">0</span>) {</span>
<span class="line" id="L270"> <span class="tok-kw">const</span> comptime_node = <span class="tok-kw">try</span> p.addNode(.{</span>
<span class="line" id="L271"> .tag = .@"comptime",</span>
<span class="line" id="L272"> .main_token = comptime_token,</span>
<span class="line" id="L273"> .data = .{</span>
<span class="line" id="L274"> .lhs = block,</span>
<span class="line" id="L275"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L276"> },</span>
<span class="line" id="L277"> });</span>
<span class="line" id="L278"> <span class="tok-kw">if</span> (field_state == .seen) {</span>
<span class="line" id="L279"> field_state = .{ .end = comptime_node };</span>
<span class="line" id="L280"> }</span>
<span class="line" id="L281"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, comptime_node);</span>
<span class="line" id="L282"> }</span>
<span class="line" id="L283"> trailing = <span class="tok-null">false</span>;</span>
<span class="line" id="L284"> },</span>
<span class="line" id="L285"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L286"> <span class="tok-kw">const</span> identifier = p.tok_i;</span>
<span class="line" id="L287"> <span class="tok-kw">defer</span> last_field = identifier;</span>
<span class="line" id="L288"> <span class="tok-kw">const</span> container_field = p.expectContainerField() <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L289"> <span class="tok-kw">error</span>.OutOfMemory => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OutOfMemory,</span>
<span class="line" id="L290"> <span class="tok-kw">error</span>.ParseError => {</span>
<span class="line" id="L291"> p.findNextContainerMember();</span>
<span class="line" id="L292"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L293"> },</span>
<span class="line" id="L294"> };</span>
<span class="line" id="L295"> <span class="tok-kw">switch</span> (field_state) {</span>
<span class="line" id="L296"> .none => field_state = .seen,</span>
<span class="line" id="L297"> .err, .seen => {},</span>
<span class="line" id="L298"> .end => |node| {</span>
<span class="line" id="L299"> <span class="tok-kw">try</span> p.warnMsg(.{</span>
<span class="line" id="L300"> .tag = .decl_between_fields,</span>
<span class="line" id="L301"> .token = p.nodes.items(.main_token)[node],</span>
<span class="line" id="L302"> });</span>
<span class="line" id="L303"> <span class="tok-kw">try</span> p.warnMsg(.{</span>
<span class="line" id="L304"> .tag = .previous_field,</span>
<span class="line" id="L305"> .is_note = <span class="tok-null">true</span>,</span>
<span class="line" id="L306"> .token = last_field,</span>
<span class="line" id="L307"> });</span>
<span class="line" id="L308"> <span class="tok-kw">try</span> p.warnMsg(.{</span>
<span class="line" id="L309"> .tag = .next_field,</span>
<span class="line" id="L310"> .is_note = <span class="tok-null">true</span>,</span>
<span class="line" id="L311"> .token = identifier,</span>
<span class="line" id="L312"> });</span>
<span class="line" id="L313"> <span class="tok-comment">// Continue parsing; error will be reported later.</span>
</span>
<span class="line" id="L314"> field_state = .err;</span>
<span class="line" id="L315"> },</span>
<span class="line" id="L316"> }</span>
<span class="line" id="L317"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, container_field);</span>
<span class="line" id="L318"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L319"> .comma => {</span>
<span class="line" id="L320"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L321"> trailing = <span class="tok-null">true</span>;</span>
<span class="line" id="L322"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L323"> },</span>
<span class="line" id="L324"> .r_brace, .eof => {</span>
<span class="line" id="L325"> trailing = <span class="tok-null">false</span>;</span>
<span class="line" id="L326"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L327"> },</span>
<span class="line" id="L328"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L329"> }</span>
<span class="line" id="L330"> <span class="tok-comment">// There is not allowed to be a decl after a field with no comma.</span>
</span>
<span class="line" id="L331"> <span class="tok-comment">// Report error but recover parser.</span>
</span>
<span class="line" id="L332"> <span class="tok-kw">try</span> p.warn(.expected_comma_after_field);</span>
<span class="line" id="L333"> p.findNextContainerMember();</span>
<span class="line" id="L334"> },</span>
<span class="line" id="L335"> },</span>
<span class="line" id="L336"> .keyword_pub => {</span>
<span class="line" id="L337"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L338"> <span class="tok-kw">const</span> top_level_decl = <span class="tok-kw">try</span> p.expectTopLevelDeclRecoverable();</span>
<span class="line" id="L339"> <span class="tok-kw">if</span> (top_level_decl != <span class="tok-number">0</span>) {</span>
<span class="line" id="L340"> <span class="tok-kw">if</span> (field_state == .seen) {</span>
<span class="line" id="L341"> field_state = .{ .end = top_level_decl };</span>
<span class="line" id="L342"> }</span>
<span class="line" id="L343"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, top_level_decl);</span>
<span class="line" id="L344"> }</span>
<span class="line" id="L345"> trailing = p.token_tags[p.tok_i - <span class="tok-number">1</span>] == .semicolon;</span>
<span class="line" id="L346"> },</span>
<span class="line" id="L347"> .keyword_usingnamespace => {</span>
<span class="line" id="L348"> <span class="tok-kw">const</span> node = <span class="tok-kw">try</span> p.expectUsingNamespaceRecoverable();</span>
<span class="line" id="L349"> <span class="tok-kw">if</span> (node != <span class="tok-number">0</span>) {</span>
<span class="line" id="L350"> <span class="tok-kw">if</span> (field_state == .seen) {</span>
<span class="line" id="L351"> field_state = .{ .end = node };</span>
<span class="line" id="L352"> }</span>
<span class="line" id="L353"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, node);</span>
<span class="line" id="L354"> }</span>
<span class="line" id="L355"> trailing = p.token_tags[p.tok_i - <span class="tok-number">1</span>] == .semicolon;</span>
<span class="line" id="L356"> },</span>
<span class="line" id="L357"> .keyword_const,</span>
<span class="line" id="L358"> .keyword_var,</span>
<span class="line" id="L359"> .keyword_threadlocal,</span>
<span class="line" id="L360"> .keyword_export,</span>
<span class="line" id="L361"> .keyword_extern,</span>
<span class="line" id="L362"> .keyword_inline,</span>
<span class="line" id="L363"> .keyword_noinline,</span>
<span class="line" id="L364"> .keyword_fn,</span>
<span class="line" id="L365"> => {</span>
<span class="line" id="L366"> <span class="tok-kw">const</span> top_level_decl = <span class="tok-kw">try</span> p.expectTopLevelDeclRecoverable();</span>
<span class="line" id="L367"> <span class="tok-kw">if</span> (top_level_decl != <span class="tok-number">0</span>) {</span>
<span class="line" id="L368"> <span class="tok-kw">if</span> (field_state == .seen) {</span>
<span class="line" id="L369"> field_state = .{ .end = top_level_decl };</span>
<span class="line" id="L370"> }</span>
<span class="line" id="L371"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, top_level_decl);</span>
<span class="line" id="L372"> }</span>
<span class="line" id="L373"> trailing = p.token_tags[p.tok_i - <span class="tok-number">1</span>] == .semicolon;</span>
<span class="line" id="L374"> },</span>
<span class="line" id="L375"> .eof, .r_brace => {</span>
<span class="line" id="L376"> <span class="tok-kw">if</span> (doc_comment) |tok| {</span>
<span class="line" id="L377"> <span class="tok-kw">try</span> p.warnMsg(.{</span>
<span class="line" id="L378"> .tag = .unattached_doc_comment,</span>
<span class="line" id="L379"> .token = tok,</span>
<span class="line" id="L380"> });</span>
<span class="line" id="L381"> }</span>
<span class="line" id="L382"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L383"> },</span>
<span class="line" id="L384"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L385"> <span class="tok-kw">const</span> c_container = p.parseCStyleContainer() <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L386"> <span class="tok-kw">error</span>.OutOfMemory => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OutOfMemory,</span>
<span class="line" id="L387"> <span class="tok-kw">error</span>.ParseError => <span class="tok-null">false</span>,</span>
<span class="line" id="L388"> };</span>
<span class="line" id="L389"> <span class="tok-kw">if</span> (c_container) <span class="tok-kw">continue</span>;</span>
<span class="line" id="L390"></span>
<span class="line" id="L391"> <span class="tok-kw">const</span> identifier = p.tok_i;</span>
<span class="line" id="L392"> <span class="tok-kw">defer</span> last_field = identifier;</span>
<span class="line" id="L393"> <span class="tok-kw">const</span> container_field = p.expectContainerField() <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L394"> <span class="tok-kw">error</span>.OutOfMemory => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OutOfMemory,</span>
<span class="line" id="L395"> <span class="tok-kw">error</span>.ParseError => {</span>
<span class="line" id="L396"> p.findNextContainerMember();</span>
<span class="line" id="L397"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L398"> },</span>
<span class="line" id="L399"> };</span>
<span class="line" id="L400"> <span class="tok-kw">switch</span> (field_state) {</span>
<span class="line" id="L401"> .none => field_state = .seen,</span>
<span class="line" id="L402"> .err, .seen => {},</span>
<span class="line" id="L403"> .end => |node| {</span>
<span class="line" id="L404"> <span class="tok-kw">try</span> p.warnMsg(.{</span>
<span class="line" id="L405"> .tag = .decl_between_fields,</span>
<span class="line" id="L406"> .token = p.nodes.items(.main_token)[node],</span>
<span class="line" id="L407"> });</span>
<span class="line" id="L408"> <span class="tok-kw">try</span> p.warnMsg(.{</span>
<span class="line" id="L409"> .tag = .previous_field,</span>
<span class="line" id="L410"> .is_note = <span class="tok-null">true</span>,</span>
<span class="line" id="L411"> .token = last_field,</span>
<span class="line" id="L412"> });</span>
<span class="line" id="L413"> <span class="tok-kw">try</span> p.warnMsg(.{</span>
<span class="line" id="L414"> .tag = .next_field,</span>
<span class="line" id="L415"> .is_note = <span class="tok-null">true</span>,</span>
<span class="line" id="L416"> .token = identifier,</span>
<span class="line" id="L417"> });</span>
<span class="line" id="L418"> <span class="tok-comment">// Continue parsing; error will be reported later.</span>
</span>
<span class="line" id="L419"> field_state = .err;</span>
<span class="line" id="L420"> },</span>
<span class="line" id="L421"> }</span>
<span class="line" id="L422"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, container_field);</span>
<span class="line" id="L423"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L424"> .comma => {</span>
<span class="line" id="L425"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L426"> trailing = <span class="tok-null">true</span>;</span>
<span class="line" id="L427"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L428"> },</span>
<span class="line" id="L429"> .r_brace, .eof => {</span>
<span class="line" id="L430"> trailing = <span class="tok-null">false</span>;</span>
<span class="line" id="L431"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L432"> },</span>
<span class="line" id="L433"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L434"> }</span>
<span class="line" id="L435"> <span class="tok-comment">// There is not allowed to be a decl after a field with no comma.</span>
</span>
<span class="line" id="L436"> <span class="tok-comment">// Report error but recover parser.</span>
</span>
<span class="line" id="L437"> <span class="tok-kw">try</span> p.warn(.expected_comma_after_field);</span>
<span class="line" id="L438"> <span class="tok-kw">if</span> (p.token_tags[p.tok_i] == .semicolon <span class="tok-kw">and</span> p.token_tags[identifier] == .identifier) {</span>
<span class="line" id="L439"> <span class="tok-kw">try</span> p.warnMsg(.{</span>
<span class="line" id="L440"> .tag = .var_const_decl,</span>
<span class="line" id="L441"> .is_note = <span class="tok-null">true</span>,</span>
<span class="line" id="L442"> .token = identifier,</span>
<span class="line" id="L443"> });</span>
<span class="line" id="L444"> }</span>
<span class="line" id="L445"> p.findNextContainerMember();</span>
<span class="line" id="L446"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L447"> },</span>
<span class="line" id="L448"> }</span>
<span class="line" id="L449"> }</span>
<span class="line" id="L450"></span>
<span class="line" id="L451"> <span class="tok-kw">const</span> items = p.scratch.items[scratch_top..];</span>
<span class="line" id="L452"> <span class="tok-kw">switch</span> (items.len) {</span>
<span class="line" id="L453"> <span class="tok-number">0</span> => <span class="tok-kw">return</span> Members{</span>
<span class="line" id="L454"> .len = <span class="tok-number">0</span>,</span>
<span class="line" id="L455"> .lhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L456"> .rhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L457"> .trailing = trailing,</span>
<span class="line" id="L458"> },</span>
<span class="line" id="L459"> <span class="tok-number">1</span> => <span class="tok-kw">return</span> Members{</span>
<span class="line" id="L460"> .len = <span class="tok-number">1</span>,</span>
<span class="line" id="L461"> .lhs = items[<span class="tok-number">0</span>],</span>
<span class="line" id="L462"> .rhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L463"> .trailing = trailing,</span>
<span class="line" id="L464"> },</span>
<span class="line" id="L465"> <span class="tok-number">2</span> => <span class="tok-kw">return</span> Members{</span>
<span class="line" id="L466"> .len = <span class="tok-number">2</span>,</span>
<span class="line" id="L467"> .lhs = items[<span class="tok-number">0</span>],</span>
<span class="line" id="L468"> .rhs = items[<span class="tok-number">1</span>],</span>
<span class="line" id="L469"> .trailing = trailing,</span>
<span class="line" id="L470"> },</span>
<span class="line" id="L471"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L472"> <span class="tok-kw">const</span> span = <span class="tok-kw">try</span> p.listToSpan(items);</span>
<span class="line" id="L473"> <span class="tok-kw">return</span> Members{</span>
<span class="line" id="L474"> .len = items.len,</span>
<span class="line" id="L475"> .lhs = span.start,</span>
<span class="line" id="L476"> .rhs = span.end,</span>
<span class="line" id="L477"> .trailing = trailing,</span>
<span class="line" id="L478"> };</span>
<span class="line" id="L479"> },</span>
<span class="line" id="L480"> }</span>
<span class="line" id="L481">}</span>
<span class="line" id="L482"></span>
<span class="line" id="L483"><span class="tok-comment">/// Attempts to find next container member by searching for certain tokens</span></span>
<span class="line" id="L484"><span class="tok-kw">fn</span> <span class="tok-fn">findNextContainerMember</span>(p: *Parse) <span class="tok-type">void</span> {</span>
<span class="line" id="L485"> <span class="tok-kw">var</span> level: <span class="tok-type">u32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L486"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L487"> <span class="tok-kw">const</span> tok = p.nextToken();</span>
<span class="line" id="L488"> <span class="tok-kw">switch</span> (p.token_tags[tok]) {</span>
<span class="line" id="L489"> <span class="tok-comment">// Any of these can start a new top level declaration.</span>
</span>
<span class="line" id="L490"> .keyword_test,</span>
<span class="line" id="L491"> .keyword_comptime,</span>
<span class="line" id="L492"> .keyword_pub,</span>
<span class="line" id="L493"> .keyword_export,</span>
<span class="line" id="L494"> .keyword_extern,</span>
<span class="line" id="L495"> .keyword_inline,</span>
<span class="line" id="L496"> .keyword_noinline,</span>
<span class="line" id="L497"> .keyword_usingnamespace,</span>
<span class="line" id="L498"> .keyword_threadlocal,</span>
<span class="line" id="L499"> .keyword_const,</span>
<span class="line" id="L500"> .keyword_var,</span>
<span class="line" id="L501"> .keyword_fn,</span>
<span class="line" id="L502"> => {</span>
<span class="line" id="L503"> <span class="tok-kw">if</span> (level == <span class="tok-number">0</span>) {</span>
<span class="line" id="L504"> p.tok_i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L505"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L506"> }</span>
<span class="line" id="L507"> },</span>
<span class="line" id="L508"> .identifier => {</span>
<span class="line" id="L509"> <span class="tok-kw">if</span> (p.token_tags[tok + <span class="tok-number">1</span>] == .comma <span class="tok-kw">and</span> level == <span class="tok-number">0</span>) {</span>
<span class="line" id="L510"> p.tok_i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L511"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L512"> }</span>
<span class="line" id="L513"> },</span>
<span class="line" id="L514"> .comma, .semicolon => {</span>
<span class="line" id="L515"> <span class="tok-comment">// this decl was likely meant to end here</span>
</span>
<span class="line" id="L516"> <span class="tok-kw">if</span> (level == <span class="tok-number">0</span>) {</span>
<span class="line" id="L517"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L518"> }</span>
<span class="line" id="L519"> },</span>
<span class="line" id="L520"> .l_paren, .l_bracket, .l_brace => level += <span class="tok-number">1</span>,</span>
<span class="line" id="L521"> .r_paren, .r_bracket => {</span>
<span class="line" id="L522"> <span class="tok-kw">if</span> (level != <span class="tok-number">0</span>) level -= <span class="tok-number">1</span>;</span>
<span class="line" id="L523"> },</span>
<span class="line" id="L524"> .r_brace => {</span>
<span class="line" id="L525"> <span class="tok-kw">if</span> (level == <span class="tok-number">0</span>) {</span>
<span class="line" id="L526"> <span class="tok-comment">// end of container, exit</span>
</span>
<span class="line" id="L527"> p.tok_i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L528"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L529"> }</span>
<span class="line" id="L530"> level -= <span class="tok-number">1</span>;</span>
<span class="line" id="L531"> },</span>
<span class="line" id="L532"> .eof => {</span>
<span class="line" id="L533"> p.tok_i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L534"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L535"> },</span>
<span class="line" id="L536"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L537"> }</span>
<span class="line" id="L538"> }</span>
<span class="line" id="L539">}</span>
<span class="line" id="L540"></span>
<span class="line" id="L541"><span class="tok-comment">/// Attempts to find the next statement by searching for a semicolon</span></span>
<span class="line" id="L542"><span class="tok-kw">fn</span> <span class="tok-fn">findNextStmt</span>(p: *Parse) <span class="tok-type">void</span> {</span>
<span class="line" id="L543"> <span class="tok-kw">var</span> level: <span class="tok-type">u32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L544"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L545"> <span class="tok-kw">const</span> tok = p.nextToken();</span>
<span class="line" id="L546"> <span class="tok-kw">switch</span> (p.token_tags[tok]) {</span>
<span class="line" id="L547"> .l_brace => level += <span class="tok-number">1</span>,</span>
<span class="line" id="L548"> .r_brace => {</span>
<span class="line" id="L549"> <span class="tok-kw">if</span> (level == <span class="tok-number">0</span>) {</span>
<span class="line" id="L550"> p.tok_i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L551"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L552"> }</span>
<span class="line" id="L553"> level -= <span class="tok-number">1</span>;</span>
<span class="line" id="L554"> },</span>
<span class="line" id="L555"> .semicolon => {</span>
<span class="line" id="L556"> <span class="tok-kw">if</span> (level == <span class="tok-number">0</span>) {</span>
<span class="line" id="L557"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L558"> }</span>
<span class="line" id="L559"> },</span>
<span class="line" id="L560"> .eof => {</span>
<span class="line" id="L561"> p.tok_i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L562"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L563"> },</span>
<span class="line" id="L564"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L565"> }</span>
<span class="line" id="L566"> }</span>
<span class="line" id="L567">}</span>
<span class="line" id="L568"></span>
<span class="line" id="L569"><span class="tok-comment">/// TestDecl <- KEYWORD_test (STRINGLITERALSINGLE / IDENTIFIER)? Block</span></span>
<span class="line" id="L570"><span class="tok-kw">fn</span> <span class="tok-fn">expectTestDecl</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L571"> <span class="tok-kw">const</span> test_token = p.assertToken(.keyword_test);</span>
<span class="line" id="L572"> <span class="tok-kw">const</span> name_token = <span class="tok-kw">switch</span> (p.token_tags[p.nextToken()]) {</span>
<span class="line" id="L573"> .string_literal, .identifier => p.tok_i - <span class="tok-number">1</span>,</span>
<span class="line" id="L574"> <span class="tok-kw">else</span> => blk: {</span>
<span class="line" id="L575"> p.tok_i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L576"> <span class="tok-kw">break</span> :blk <span class="tok-null">null</span>;</span>
<span class="line" id="L577"> },</span>
<span class="line" id="L578"> };</span>
<span class="line" id="L579"> <span class="tok-kw">const</span> block_node = <span class="tok-kw">try</span> p.parseBlock();</span>
<span class="line" id="L580"> <span class="tok-kw">if</span> (block_node == <span class="tok-number">0</span>) <span class="tok-kw">return</span> p.fail(.expected_block);</span>
<span class="line" id="L581"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L582"> .tag = .test_decl,</span>
<span class="line" id="L583"> .main_token = test_token,</span>
<span class="line" id="L584"> .data = .{</span>
<span class="line" id="L585"> .lhs = name_token <span class="tok-kw">orelse</span> <span class="tok-number">0</span>,</span>
<span class="line" id="L586"> .rhs = block_node,</span>
<span class="line" id="L587"> },</span>
<span class="line" id="L588"> });</span>
<span class="line" id="L589">}</span>
<span class="line" id="L590"></span>
<span class="line" id="L591"><span class="tok-kw">fn</span> <span class="tok-fn">expectTestDeclRecoverable</span>(p: *Parse) <span class="tok-kw">error</span>{OutOfMemory}!Node.Index {</span>
<span class="line" id="L592"> <span class="tok-kw">return</span> p.expectTestDecl() <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L593"> <span class="tok-kw">error</span>.OutOfMemory => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OutOfMemory,</span>
<span class="line" id="L594"> <span class="tok-kw">error</span>.ParseError => {</span>
<span class="line" id="L595"> p.findNextContainerMember();</span>
<span class="line" id="L596"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L597"> },</span>
<span class="line" id="L598"> };</span>
<span class="line" id="L599">}</span>
<span class="line" id="L600"></span>
<span class="line" id="L601"><span class="tok-comment">/// Decl</span></span>
<span class="line" id="L602"><span class="tok-comment">/// <- (KEYWORD_export / KEYWORD_extern STRINGLITERALSINGLE? / (KEYWORD_inline / KEYWORD_noinline))? FnProto (SEMICOLON / Block)</span></span>
<span class="line" id="L603"><span class="tok-comment">/// / (KEYWORD_export / KEYWORD_extern STRINGLITERALSINGLE?)? KEYWORD_threadlocal? VarDecl</span></span>
<span class="line" id="L604"><span class="tok-comment">/// / KEYWORD_usingnamespace Expr SEMICOLON</span></span>
<span class="line" id="L605"><span class="tok-kw">fn</span> <span class="tok-fn">expectTopLevelDecl</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L606"> <span class="tok-kw">const</span> extern_export_inline_token = p.nextToken();</span>
<span class="line" id="L607"> <span class="tok-kw">var</span> is_extern: <span class="tok-type">bool</span> = <span class="tok-null">false</span>;</span>
<span class="line" id="L608"> <span class="tok-kw">var</span> expect_fn: <span class="tok-type">bool</span> = <span class="tok-null">false</span>;</span>
<span class="line" id="L609"> <span class="tok-kw">var</span> expect_var_or_fn: <span class="tok-type">bool</span> = <span class="tok-null">false</span>;</span>
<span class="line" id="L610"> <span class="tok-kw">switch</span> (p.token_tags[extern_export_inline_token]) {</span>
<span class="line" id="L611"> .keyword_extern => {</span>
<span class="line" id="L612"> _ = p.eatToken(.string_literal);</span>
<span class="line" id="L613"> is_extern = <span class="tok-null">true</span>;</span>
<span class="line" id="L614"> expect_var_or_fn = <span class="tok-null">true</span>;</span>
<span class="line" id="L615"> },</span>
<span class="line" id="L616"> .keyword_export => expect_var_or_fn = <span class="tok-null">true</span>,</span>
<span class="line" id="L617"> .keyword_inline, .keyword_noinline => expect_fn = <span class="tok-null">true</span>,</span>
<span class="line" id="L618"> <span class="tok-kw">else</span> => p.tok_i -= <span class="tok-number">1</span>,</span>
<span class="line" id="L619"> }</span>
<span class="line" id="L620"> <span class="tok-kw">const</span> fn_proto = <span class="tok-kw">try</span> p.parseFnProto();</span>
<span class="line" id="L621"> <span class="tok-kw">if</span> (fn_proto != <span class="tok-number">0</span>) {</span>
<span class="line" id="L622"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L623"> .semicolon => {</span>
<span class="line" id="L624"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L625"> <span class="tok-kw">return</span> fn_proto;</span>
<span class="line" id="L626"> },</span>
<span class="line" id="L627"> .l_brace => {</span>
<span class="line" id="L628"> <span class="tok-kw">if</span> (is_extern) {</span>
<span class="line" id="L629"> <span class="tok-kw">try</span> p.warnMsg(.{ .tag = .extern_fn_body, .token = extern_export_inline_token });</span>
<span class="line" id="L630"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L631"> }</span>
<span class="line" id="L632"> <span class="tok-kw">const</span> fn_decl_index = <span class="tok-kw">try</span> p.reserveNode(.fn_decl);</span>
<span class="line" id="L633"> <span class="tok-kw">errdefer</span> p.unreserveNode(fn_decl_index);</span>
<span class="line" id="L634"></span>
<span class="line" id="L635"> <span class="tok-kw">const</span> body_block = <span class="tok-kw">try</span> p.parseBlock();</span>
<span class="line" id="L636"> assert(body_block != <span class="tok-number">0</span>);</span>
<span class="line" id="L637"> <span class="tok-kw">return</span> p.setNode(fn_decl_index, .{</span>
<span class="line" id="L638"> .tag = .fn_decl,</span>
<span class="line" id="L639"> .main_token = p.nodes.items(.main_token)[fn_proto],</span>
<span class="line" id="L640"> .data = .{</span>
<span class="line" id="L641"> .lhs = fn_proto,</span>
<span class="line" id="L642"> .rhs = body_block,</span>
<span class="line" id="L643"> },</span>
<span class="line" id="L644"> });</span>
<span class="line" id="L645"> },</span>
<span class="line" id="L646"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L647"> <span class="tok-comment">// Since parseBlock only return error.ParseError on</span>
</span>
<span class="line" id="L648"> <span class="tok-comment">// a missing '}' we can assume this function was</span>
</span>
<span class="line" id="L649"> <span class="tok-comment">// supposed to end here.</span>
</span>
<span class="line" id="L650"> <span class="tok-kw">try</span> p.warn(.expected_semi_or_lbrace);</span>
<span class="line" id="L651"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L652"> },</span>
<span class="line" id="L653"> }</span>
<span class="line" id="L654"> }</span>
<span class="line" id="L655"> <span class="tok-kw">if</span> (expect_fn) {</span>
<span class="line" id="L656"> <span class="tok-kw">try</span> p.warn(.expected_fn);</span>
<span class="line" id="L657"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ParseError;</span>
<span class="line" id="L658"> }</span>
<span class="line" id="L659"></span>
<span class="line" id="L660"> <span class="tok-kw">const</span> thread_local_token = p.eatToken(.keyword_threadlocal);</span>
<span class="line" id="L661"> <span class="tok-kw">const</span> var_decl = <span class="tok-kw">try</span> p.parseVarDecl();</span>
<span class="line" id="L662"> <span class="tok-kw">if</span> (var_decl != <span class="tok-number">0</span>) {</span>
<span class="line" id="L663"> <span class="tok-kw">try</span> p.expectSemicolon(.expected_semi_after_decl, <span class="tok-null">false</span>);</span>
<span class="line" id="L664"> <span class="tok-kw">return</span> var_decl;</span>
<span class="line" id="L665"> }</span>
<span class="line" id="L666"> <span class="tok-kw">if</span> (thread_local_token != <span class="tok-null">null</span>) {</span>
<span class="line" id="L667"> <span class="tok-kw">return</span> p.fail(.expected_var_decl);</span>
<span class="line" id="L668"> }</span>
<span class="line" id="L669"> <span class="tok-kw">if</span> (expect_var_or_fn) {</span>
<span class="line" id="L670"> <span class="tok-kw">return</span> p.fail(.expected_var_decl_or_fn);</span>
<span class="line" id="L671"> }</span>
<span class="line" id="L672"> <span class="tok-kw">if</span> (p.token_tags[p.tok_i] != .keyword_usingnamespace) {</span>
<span class="line" id="L673"> <span class="tok-kw">return</span> p.fail(.expected_pub_item);</span>
<span class="line" id="L674"> }</span>
<span class="line" id="L675"> <span class="tok-kw">return</span> p.expectUsingNamespace();</span>
<span class="line" id="L676">}</span>
<span class="line" id="L677"></span>
<span class="line" id="L678"><span class="tok-kw">fn</span> <span class="tok-fn">expectTopLevelDeclRecoverable</span>(p: *Parse) <span class="tok-kw">error</span>{OutOfMemory}!Node.Index {</span>
<span class="line" id="L679"> <span class="tok-kw">return</span> p.expectTopLevelDecl() <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L680"> <span class="tok-kw">error</span>.OutOfMemory => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OutOfMemory,</span>
<span class="line" id="L681"> <span class="tok-kw">error</span>.ParseError => {</span>
<span class="line" id="L682"> p.findNextContainerMember();</span>
<span class="line" id="L683"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L684"> },</span>
<span class="line" id="L685"> };</span>
<span class="line" id="L686">}</span>
<span class="line" id="L687"></span>
<span class="line" id="L688"><span class="tok-kw">fn</span> <span class="tok-fn">expectUsingNamespace</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L689"> <span class="tok-kw">const</span> usingnamespace_token = p.assertToken(.keyword_usingnamespace);</span>
<span class="line" id="L690"> <span class="tok-kw">const</span> expr = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L691"> <span class="tok-kw">try</span> p.expectSemicolon(.expected_semi_after_decl, <span class="tok-null">false</span>);</span>
<span class="line" id="L692"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L693"> .tag = .@"usingnamespace",</span>
<span class="line" id="L694"> .main_token = usingnamespace_token,</span>
<span class="line" id="L695"> .data = .{</span>
<span class="line" id="L696"> .lhs = expr,</span>
<span class="line" id="L697"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L698"> },</span>
<span class="line" id="L699"> });</span>
<span class="line" id="L700">}</span>
<span class="line" id="L701"></span>
<span class="line" id="L702"><span class="tok-kw">fn</span> <span class="tok-fn">expectUsingNamespaceRecoverable</span>(p: *Parse) <span class="tok-kw">error</span>{OutOfMemory}!Node.Index {</span>
<span class="line" id="L703"> <span class="tok-kw">return</span> p.expectUsingNamespace() <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L704"> <span class="tok-kw">error</span>.OutOfMemory => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OutOfMemory,</span>
<span class="line" id="L705"> <span class="tok-kw">error</span>.ParseError => {</span>
<span class="line" id="L706"> p.findNextContainerMember();</span>
<span class="line" id="L707"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L708"> },</span>
<span class="line" id="L709"> };</span>
<span class="line" id="L710">}</span>
<span class="line" id="L711"></span>
<span class="line" id="L712"><span class="tok-comment">/// FnProto <- KEYWORD_fn IDENTIFIER? LPAREN ParamDeclList RPAREN ByteAlign? AddrSpace? LinkSection? CallConv? EXCLAMATIONMARK? TypeExpr</span></span>
<span class="line" id="L713"><span class="tok-kw">fn</span> <span class="tok-fn">parseFnProto</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L714"> <span class="tok-kw">const</span> fn_token = p.eatToken(.keyword_fn) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L715"></span>
<span class="line" id="L716"> <span class="tok-comment">// We want the fn proto node to be before its children in the array.</span>
</span>
<span class="line" id="L717"> <span class="tok-kw">const</span> fn_proto_index = <span class="tok-kw">try</span> p.reserveNode(.fn_proto);</span>
<span class="line" id="L718"> <span class="tok-kw">errdefer</span> p.unreserveNode(fn_proto_index);</span>
<span class="line" id="L719"></span>
<span class="line" id="L720"> _ = p.eatToken(.identifier);</span>
<span class="line" id="L721"> <span class="tok-kw">const</span> params = <span class="tok-kw">try</span> p.parseParamDeclList();</span>
<span class="line" id="L722"> <span class="tok-kw">const</span> align_expr = <span class="tok-kw">try</span> p.parseByteAlign();</span>
<span class="line" id="L723"> <span class="tok-kw">const</span> addrspace_expr = <span class="tok-kw">try</span> p.parseAddrSpace();</span>
<span class="line" id="L724"> <span class="tok-kw">const</span> section_expr = <span class="tok-kw">try</span> p.parseLinkSection();</span>
<span class="line" id="L725"> <span class="tok-kw">const</span> callconv_expr = <span class="tok-kw">try</span> p.parseCallconv();</span>
<span class="line" id="L726"> _ = p.eatToken(.bang);</span>
<span class="line" id="L727"></span>
<span class="line" id="L728"> <span class="tok-kw">const</span> return_type_expr = <span class="tok-kw">try</span> p.parseTypeExpr();</span>
<span class="line" id="L729"> <span class="tok-kw">if</span> (return_type_expr == <span class="tok-number">0</span>) {</span>
<span class="line" id="L730"> <span class="tok-comment">// most likely the user forgot to specify the return type.</span>
</span>
<span class="line" id="L731"> <span class="tok-comment">// Mark return type as invalid and try to continue.</span>
</span>
<span class="line" id="L732"> <span class="tok-kw">try</span> p.warn(.expected_return_type);</span>
<span class="line" id="L733"> }</span>
<span class="line" id="L734"></span>
<span class="line" id="L735"> <span class="tok-kw">if</span> (align_expr == <span class="tok-number">0</span> <span class="tok-kw">and</span> section_expr == <span class="tok-number">0</span> <span class="tok-kw">and</span> callconv_expr == <span class="tok-number">0</span> <span class="tok-kw">and</span> addrspace_expr == <span class="tok-number">0</span>) {</span>
<span class="line" id="L736"> <span class="tok-kw">switch</span> (params) {</span>
<span class="line" id="L737"> .zero_or_one => |param| <span class="tok-kw">return</span> p.setNode(fn_proto_index, .{</span>
<span class="line" id="L738"> .tag = .fn_proto_simple,</span>
<span class="line" id="L739"> .main_token = fn_token,</span>
<span class="line" id="L740"> .data = .{</span>
<span class="line" id="L741"> .lhs = param,</span>
<span class="line" id="L742"> .rhs = return_type_expr,</span>
<span class="line" id="L743"> },</span>
<span class="line" id="L744"> }),</span>
<span class="line" id="L745"> .multi => |span| {</span>
<span class="line" id="L746"> <span class="tok-kw">return</span> p.setNode(fn_proto_index, .{</span>
<span class="line" id="L747"> .tag = .fn_proto_multi,</span>
<span class="line" id="L748"> .main_token = fn_token,</span>
<span class="line" id="L749"> .data = .{</span>
<span class="line" id="L750"> .lhs = <span class="tok-kw">try</span> p.addExtra(Node.SubRange{</span>
<span class="line" id="L751"> .start = span.start,</span>
<span class="line" id="L752"> .end = span.end,</span>
<span class="line" id="L753"> }),</span>
<span class="line" id="L754"> .rhs = return_type_expr,</span>
<span class="line" id="L755"> },</span>
<span class="line" id="L756"> });</span>
<span class="line" id="L757"> },</span>
<span class="line" id="L758"> }</span>
<span class="line" id="L759"> }</span>
<span class="line" id="L760"> <span class="tok-kw">switch</span> (params) {</span>
<span class="line" id="L761"> .zero_or_one => |param| <span class="tok-kw">return</span> p.setNode(fn_proto_index, .{</span>
<span class="line" id="L762"> .tag = .fn_proto_one,</span>
<span class="line" id="L763"> .main_token = fn_token,</span>
<span class="line" id="L764"> .data = .{</span>
<span class="line" id="L765"> .lhs = <span class="tok-kw">try</span> p.addExtra(Node.FnProtoOne{</span>
<span class="line" id="L766"> .param = param,</span>
<span class="line" id="L767"> .align_expr = align_expr,</span>
<span class="line" id="L768"> .addrspace_expr = addrspace_expr,</span>
<span class="line" id="L769"> .section_expr = section_expr,</span>
<span class="line" id="L770"> .callconv_expr = callconv_expr,</span>
<span class="line" id="L771"> }),</span>
<span class="line" id="L772"> .rhs = return_type_expr,</span>
<span class="line" id="L773"> },</span>
<span class="line" id="L774"> }),</span>
<span class="line" id="L775"> .multi => |span| {</span>
<span class="line" id="L776"> <span class="tok-kw">return</span> p.setNode(fn_proto_index, .{</span>
<span class="line" id="L777"> .tag = .fn_proto,</span>
<span class="line" id="L778"> .main_token = fn_token,</span>
<span class="line" id="L779"> .data = .{</span>
<span class="line" id="L780"> .lhs = <span class="tok-kw">try</span> p.addExtra(Node.FnProto{</span>
<span class="line" id="L781"> .params_start = span.start,</span>
<span class="line" id="L782"> .params_end = span.end,</span>
<span class="line" id="L783"> .align_expr = align_expr,</span>
<span class="line" id="L784"> .addrspace_expr = addrspace_expr,</span>
<span class="line" id="L785"> .section_expr = section_expr,</span>
<span class="line" id="L786"> .callconv_expr = callconv_expr,</span>
<span class="line" id="L787"> }),</span>
<span class="line" id="L788"> .rhs = return_type_expr,</span>
<span class="line" id="L789"> },</span>
<span class="line" id="L790"> });</span>
<span class="line" id="L791"> },</span>
<span class="line" id="L792"> }</span>
<span class="line" id="L793">}</span>
<span class="line" id="L794"></span>
<span class="line" id="L795"><span class="tok-comment">/// VarDecl <- (KEYWORD_const / KEYWORD_var) IDENTIFIER (COLON TypeExpr)? ByteAlign? AddrSpace? LinkSection? (EQUAL Expr)? SEMICOLON</span></span>
<span class="line" id="L796"><span class="tok-kw">fn</span> <span class="tok-fn">parseVarDecl</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L797"> <span class="tok-kw">const</span> mut_token = p.eatToken(.keyword_const) <span class="tok-kw">orelse</span></span>
<span class="line" id="L798"> p.eatToken(.keyword_var) <span class="tok-kw">orelse</span></span>
<span class="line" id="L799"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L800"></span>
<span class="line" id="L801"> _ = <span class="tok-kw">try</span> p.expectToken(.identifier);</span>
<span class="line" id="L802"> <span class="tok-kw">const</span> type_node: Node.Index = <span class="tok-kw">if</span> (p.eatToken(.colon) == <span class="tok-null">null</span>) <span class="tok-number">0</span> <span class="tok-kw">else</span> <span class="tok-kw">try</span> p.expectTypeExpr();</span>
<span class="line" id="L803"> <span class="tok-kw">const</span> align_node = <span class="tok-kw">try</span> p.parseByteAlign();</span>
<span class="line" id="L804"> <span class="tok-kw">const</span> addrspace_node = <span class="tok-kw">try</span> p.parseAddrSpace();</span>
<span class="line" id="L805"> <span class="tok-kw">const</span> section_node = <span class="tok-kw">try</span> p.parseLinkSection();</span>
<span class="line" id="L806"> <span class="tok-kw">const</span> init_node: Node.Index = <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L807"> .equal_equal => blk: {</span>
<span class="line" id="L808"> <span class="tok-kw">try</span> p.warn(.wrong_equal_var_decl);</span>
<span class="line" id="L809"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L810"> <span class="tok-kw">break</span> :blk <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L811"> },</span>
<span class="line" id="L812"> .equal => blk: {</span>
<span class="line" id="L813"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L814"> <span class="tok-kw">break</span> :blk <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L815"> },</span>
<span class="line" id="L816"> <span class="tok-kw">else</span> => <span class="tok-number">0</span>,</span>
<span class="line" id="L817"> };</span>
<span class="line" id="L818"> <span class="tok-kw">if</span> (section_node == <span class="tok-number">0</span> <span class="tok-kw">and</span> addrspace_node == <span class="tok-number">0</span>) {</span>
<span class="line" id="L819"> <span class="tok-kw">if</span> (align_node == <span class="tok-number">0</span>) {</span>
<span class="line" id="L820"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L821"> .tag = .simple_var_decl,</span>
<span class="line" id="L822"> .main_token = mut_token,</span>
<span class="line" id="L823"> .data = .{</span>
<span class="line" id="L824"> .lhs = type_node,</span>
<span class="line" id="L825"> .rhs = init_node,</span>
<span class="line" id="L826"> },</span>
<span class="line" id="L827"> });</span>
<span class="line" id="L828"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (type_node == <span class="tok-number">0</span>) {</span>
<span class="line" id="L829"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L830"> .tag = .aligned_var_decl,</span>
<span class="line" id="L831"> .main_token = mut_token,</span>
<span class="line" id="L832"> .data = .{</span>
<span class="line" id="L833"> .lhs = align_node,</span>
<span class="line" id="L834"> .rhs = init_node,</span>
<span class="line" id="L835"> },</span>
<span class="line" id="L836"> });</span>
<span class="line" id="L837"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L838"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L839"> .tag = .local_var_decl,</span>
<span class="line" id="L840"> .main_token = mut_token,</span>
<span class="line" id="L841"> .data = .{</span>
<span class="line" id="L842"> .lhs = <span class="tok-kw">try</span> p.addExtra(Node.LocalVarDecl{</span>
<span class="line" id="L843"> .type_node = type_node,</span>
<span class="line" id="L844"> .align_node = align_node,</span>
<span class="line" id="L845"> }),</span>
<span class="line" id="L846"> .rhs = init_node,</span>
<span class="line" id="L847"> },</span>
<span class="line" id="L848"> });</span>
<span class="line" id="L849"> }</span>
<span class="line" id="L850"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L851"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L852"> .tag = .global_var_decl,</span>
<span class="line" id="L853"> .main_token = mut_token,</span>
<span class="line" id="L854"> .data = .{</span>
<span class="line" id="L855"> .lhs = <span class="tok-kw">try</span> p.addExtra(Node.GlobalVarDecl{</span>
<span class="line" id="L856"> .type_node = type_node,</span>
<span class="line" id="L857"> .align_node = align_node,</span>
<span class="line" id="L858"> .addrspace_node = addrspace_node,</span>
<span class="line" id="L859"> .section_node = section_node,</span>
<span class="line" id="L860"> }),</span>
<span class="line" id="L861"> .rhs = init_node,</span>
<span class="line" id="L862"> },</span>
<span class="line" id="L863"> });</span>
<span class="line" id="L864"> }</span>
<span class="line" id="L865">}</span>
<span class="line" id="L866"></span>
<span class="line" id="L867"><span class="tok-comment">/// ContainerField</span></span>
<span class="line" id="L868"><span class="tok-comment">/// <- doc_comment? KEYWORD_comptime? IDENTIFIER (COLON TypeExpr)? ByteAlign? (EQUAL Expr)?</span></span>
<span class="line" id="L869"><span class="tok-comment">/// / doc_comment? KEYWORD_comptime? (IDENTIFIER COLON)? !KEYWORD_fn TypeExpr ByteAlign? (EQUAL Expr)?</span></span>
<span class="line" id="L870"><span class="tok-kw">fn</span> <span class="tok-fn">expectContainerField</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L871"> <span class="tok-kw">var</span> main_token = p.tok_i;</span>
<span class="line" id="L872"> _ = p.eatToken(.keyword_comptime);</span>
<span class="line" id="L873"> <span class="tok-kw">const</span> tuple_like = p.token_tags[p.tok_i] != .identifier <span class="tok-kw">or</span> p.token_tags[p.tok_i + <span class="tok-number">1</span>] != .colon;</span>
<span class="line" id="L874"> <span class="tok-kw">if</span> (!tuple_like) {</span>
<span class="line" id="L875"> main_token = p.assertToken(.identifier);</span>
<span class="line" id="L876"> }</span>
<span class="line" id="L877"></span>
<span class="line" id="L878"> <span class="tok-kw">var</span> align_expr: Node.Index = <span class="tok-number">0</span>;</span>
<span class="line" id="L879"> <span class="tok-kw">var</span> type_expr: Node.Index = <span class="tok-number">0</span>;</span>
<span class="line" id="L880"> <span class="tok-kw">if</span> (p.eatToken(.colon) != <span class="tok-null">null</span> <span class="tok-kw">or</span> tuple_like) {</span>
<span class="line" id="L881"> type_expr = <span class="tok-kw">try</span> p.expectTypeExpr();</span>
<span class="line" id="L882"> align_expr = <span class="tok-kw">try</span> p.parseByteAlign();</span>
<span class="line" id="L883"> }</span>
<span class="line" id="L884"></span>
<span class="line" id="L885"> <span class="tok-kw">const</span> value_expr: Node.Index = <span class="tok-kw">if</span> (p.eatToken(.equal) == <span class="tok-null">null</span>) <span class="tok-number">0</span> <span class="tok-kw">else</span> <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L886"></span>
<span class="line" id="L887"> <span class="tok-kw">if</span> (align_expr == <span class="tok-number">0</span>) {</span>
<span class="line" id="L888"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L889"> .tag = .container_field_init,</span>
<span class="line" id="L890"> .main_token = main_token,</span>
<span class="line" id="L891"> .data = .{</span>
<span class="line" id="L892"> .lhs = type_expr,</span>
<span class="line" id="L893"> .rhs = value_expr,</span>
<span class="line" id="L894"> },</span>
<span class="line" id="L895"> });</span>
<span class="line" id="L896"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (value_expr == <span class="tok-number">0</span>) {</span>
<span class="line" id="L897"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L898"> .tag = .container_field_align,</span>
<span class="line" id="L899"> .main_token = main_token,</span>
<span class="line" id="L900"> .data = .{</span>
<span class="line" id="L901"> .lhs = type_expr,</span>
<span class="line" id="L902"> .rhs = align_expr,</span>
<span class="line" id="L903"> },</span>
<span class="line" id="L904"> });</span>
<span class="line" id="L905"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L906"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L907"> .tag = .container_field,</span>
<span class="line" id="L908"> .main_token = main_token,</span>
<span class="line" id="L909"> .data = .{</span>
<span class="line" id="L910"> .lhs = type_expr,</span>
<span class="line" id="L911"> .rhs = <span class="tok-kw">try</span> p.addExtra(Node.ContainerField{</span>
<span class="line" id="L912"> .value_expr = value_expr,</span>
<span class="line" id="L913"> .align_expr = align_expr,</span>
<span class="line" id="L914"> }),</span>
<span class="line" id="L915"> },</span>
<span class="line" id="L916"> });</span>
<span class="line" id="L917"> }</span>
<span class="line" id="L918">}</span>
<span class="line" id="L919"></span>
<span class="line" id="L920"><span class="tok-comment">/// Statement</span></span>
<span class="line" id="L921"><span class="tok-comment">/// <- KEYWORD_comptime? VarDecl</span></span>
<span class="line" id="L922"><span class="tok-comment">/// / KEYWORD_comptime BlockExprStatement</span></span>
<span class="line" id="L923"><span class="tok-comment">/// / KEYWORD_nosuspend BlockExprStatement</span></span>
<span class="line" id="L924"><span class="tok-comment">/// / KEYWORD_suspend BlockExprStatement</span></span>
<span class="line" id="L925"><span class="tok-comment">/// / KEYWORD_defer BlockExprStatement</span></span>
<span class="line" id="L926"><span class="tok-comment">/// / KEYWORD_errdefer Payload? BlockExprStatement</span></span>
<span class="line" id="L927"><span class="tok-comment">/// / IfStatement</span></span>
<span class="line" id="L928"><span class="tok-comment">/// / LabeledStatement</span></span>
<span class="line" id="L929"><span class="tok-comment">/// / SwitchExpr</span></span>
<span class="line" id="L930"><span class="tok-comment">/// / AssignExpr SEMICOLON</span></span>
<span class="line" id="L931"><span class="tok-kw">fn</span> <span class="tok-fn">parseStatement</span>(p: *Parse, allow_defer_var: <span class="tok-type">bool</span>) Error!Node.Index {</span>
<span class="line" id="L932"> <span class="tok-kw">const</span> comptime_token = p.eatToken(.keyword_comptime);</span>
<span class="line" id="L933"></span>
<span class="line" id="L934"> <span class="tok-kw">if</span> (allow_defer_var) {</span>
<span class="line" id="L935"> <span class="tok-kw">const</span> var_decl = <span class="tok-kw">try</span> p.parseVarDecl();</span>
<span class="line" id="L936"> <span class="tok-kw">if</span> (var_decl != <span class="tok-number">0</span>) {</span>
<span class="line" id="L937"> <span class="tok-kw">try</span> p.expectSemicolon(.expected_semi_after_decl, <span class="tok-null">true</span>);</span>
<span class="line" id="L938"> <span class="tok-kw">return</span> var_decl;</span>
<span class="line" id="L939"> }</span>
<span class="line" id="L940"> }</span>
<span class="line" id="L941"></span>
<span class="line" id="L942"> <span class="tok-kw">if</span> (comptime_token) |token| {</span>
<span class="line" id="L943"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L944"> .tag = .@"comptime",</span>
<span class="line" id="L945"> .main_token = token,</span>
<span class="line" id="L946"> .data = .{</span>
<span class="line" id="L947"> .lhs = <span class="tok-kw">try</span> p.expectBlockExprStatement(),</span>
<span class="line" id="L948"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L949"> },</span>
<span class="line" id="L950"> });</span>
<span class="line" id="L951"> }</span>
<span class="line" id="L952"></span>
<span class="line" id="L953"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L954"> .keyword_nosuspend => {</span>
<span class="line" id="L955"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L956"> .tag = .@"nosuspend",</span>
<span class="line" id="L957"> .main_token = p.nextToken(),</span>
<span class="line" id="L958"> .data = .{</span>
<span class="line" id="L959"> .lhs = <span class="tok-kw">try</span> p.expectBlockExprStatement(),</span>
<span class="line" id="L960"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L961"> },</span>
<span class="line" id="L962"> });</span>
<span class="line" id="L963"> },</span>
<span class="line" id="L964"> .keyword_suspend => {</span>
<span class="line" id="L965"> <span class="tok-kw">const</span> token = p.nextToken();</span>
<span class="line" id="L966"> <span class="tok-kw">const</span> block_expr = <span class="tok-kw">try</span> p.expectBlockExprStatement();</span>
<span class="line" id="L967"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L968"> .tag = .@"suspend",</span>
<span class="line" id="L969"> .main_token = token,</span>
<span class="line" id="L970"> .data = .{</span>
<span class="line" id="L971"> .lhs = block_expr,</span>
<span class="line" id="L972"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L973"> },</span>
<span class="line" id="L974"> });</span>
<span class="line" id="L975"> },</span>
<span class="line" id="L976"> .keyword_defer => <span class="tok-kw">if</span> (allow_defer_var) <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L977"> .tag = .@"defer",</span>
<span class="line" id="L978"> .main_token = p.nextToken(),</span>
<span class="line" id="L979"> .data = .{</span>
<span class="line" id="L980"> .lhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L981"> .rhs = <span class="tok-kw">try</span> p.expectBlockExprStatement(),</span>
<span class="line" id="L982"> },</span>
<span class="line" id="L983"> }),</span>
<span class="line" id="L984"> .keyword_errdefer => <span class="tok-kw">if</span> (allow_defer_var) <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L985"> .tag = .@"errdefer",</span>
<span class="line" id="L986"> .main_token = p.nextToken(),</span>
<span class="line" id="L987"> .data = .{</span>
<span class="line" id="L988"> .lhs = <span class="tok-kw">try</span> p.parsePayload(),</span>
<span class="line" id="L989"> .rhs = <span class="tok-kw">try</span> p.expectBlockExprStatement(),</span>
<span class="line" id="L990"> },</span>
<span class="line" id="L991"> }),</span>
<span class="line" id="L992"> .keyword_switch => <span class="tok-kw">return</span> p.expectSwitchExpr(),</span>
<span class="line" id="L993"> .keyword_if => <span class="tok-kw">return</span> p.expectIfStatement(),</span>
<span class="line" id="L994"> .keyword_enum, .keyword_struct, .keyword_union => {</span>
<span class="line" id="L995"> <span class="tok-kw">const</span> identifier = p.tok_i + <span class="tok-number">1</span>;</span>
<span class="line" id="L996"> <span class="tok-kw">if</span> (<span class="tok-kw">try</span> p.parseCStyleContainer()) {</span>
<span class="line" id="L997"> <span class="tok-comment">// Return something so that `expectStatement` is happy.</span>
</span>
<span class="line" id="L998"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L999"> .tag = .identifier,</span>
<span class="line" id="L1000"> .main_token = identifier,</span>
<span class="line" id="L1001"> .data = .{</span>
<span class="line" id="L1002"> .lhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1003"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1004"> },</span>
<span class="line" id="L1005"> });</span>
<span class="line" id="L1006"> }</span>
<span class="line" id="L1007"> },</span>
<span class="line" id="L1008"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L1009"> }</span>
<span class="line" id="L1010"></span>
<span class="line" id="L1011"> <span class="tok-kw">const</span> labeled_statement = <span class="tok-kw">try</span> p.parseLabeledStatement();</span>
<span class="line" id="L1012"> <span class="tok-kw">if</span> (labeled_statement != <span class="tok-number">0</span>) <span class="tok-kw">return</span> labeled_statement;</span>
<span class="line" id="L1013"></span>
<span class="line" id="L1014"> <span class="tok-kw">const</span> assign_expr = <span class="tok-kw">try</span> p.parseAssignExpr();</span>
<span class="line" id="L1015"> <span class="tok-kw">if</span> (assign_expr != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1016"> <span class="tok-kw">try</span> p.expectSemicolon(.expected_semi_after_stmt, <span class="tok-null">true</span>);</span>
<span class="line" id="L1017"> <span class="tok-kw">return</span> assign_expr;</span>
<span class="line" id="L1018"> }</span>
<span class="line" id="L1019"></span>
<span class="line" id="L1020"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L1021">}</span>
<span class="line" id="L1022"></span>
<span class="line" id="L1023"><span class="tok-kw">fn</span> <span class="tok-fn">expectStatement</span>(p: *Parse, allow_defer_var: <span class="tok-type">bool</span>) !Node.Index {</span>
<span class="line" id="L1024"> <span class="tok-kw">const</span> statement = <span class="tok-kw">try</span> p.parseStatement(allow_defer_var);</span>
<span class="line" id="L1025"> <span class="tok-kw">if</span> (statement == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1026"> <span class="tok-kw">return</span> p.fail(.expected_statement);</span>
<span class="line" id="L1027"> }</span>
<span class="line" id="L1028"> <span class="tok-kw">return</span> statement;</span>
<span class="line" id="L1029">}</span>
<span class="line" id="L1030"></span>
<span class="line" id="L1031"><span class="tok-comment">/// If a parse error occurs, reports an error, but then finds the next statement</span></span>
<span class="line" id="L1032"><span class="tok-comment">/// and returns that one instead. If a parse error occurs but there is no following</span></span>
<span class="line" id="L1033"><span class="tok-comment">/// statement, returns 0.</span></span>
<span class="line" id="L1034"><span class="tok-kw">fn</span> <span class="tok-fn">expectStatementRecoverable</span>(p: *Parse) Error!Node.Index {</span>
<span class="line" id="L1035"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1036"> <span class="tok-kw">return</span> p.expectStatement(<span class="tok-null">true</span>) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L1037"> <span class="tok-kw">error</span>.OutOfMemory => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OutOfMemory,</span>
<span class="line" id="L1038"> <span class="tok-kw">error</span>.ParseError => {</span>
<span class="line" id="L1039"> p.findNextStmt(); <span class="tok-comment">// Try to skip to the next statement.</span>
</span>
<span class="line" id="L1040"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L1041"> .r_brace => <span class="tok-kw">return</span> null_node,</span>
<span class="line" id="L1042"> .eof => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ParseError,</span>
<span class="line" id="L1043"> <span class="tok-kw">else</span> => <span class="tok-kw">continue</span>,</span>
<span class="line" id="L1044"> }</span>
<span class="line" id="L1045"> },</span>
<span class="line" id="L1046"> };</span>
<span class="line" id="L1047"> }</span>
<span class="line" id="L1048">}</span>
<span class="line" id="L1049"></span>
<span class="line" id="L1050"><span class="tok-comment">/// IfStatement</span></span>
<span class="line" id="L1051"><span class="tok-comment">/// <- IfPrefix BlockExpr ( KEYWORD_else Payload? Statement )?</span></span>
<span class="line" id="L1052"><span class="tok-comment">/// / IfPrefix AssignExpr ( SEMICOLON / KEYWORD_else Payload? Statement )</span></span>
<span class="line" id="L1053"><span class="tok-kw">fn</span> <span class="tok-fn">expectIfStatement</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L1054"> <span class="tok-kw">const</span> if_token = p.assertToken(.keyword_if);</span>
<span class="line" id="L1055"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L1056"> <span class="tok-kw">const</span> condition = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L1057"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L1058"> _ = <span class="tok-kw">try</span> p.parsePtrPayload();</span>
<span class="line" id="L1059"></span>
<span class="line" id="L1060"> <span class="tok-comment">// TODO propose to change the syntax so that semicolons are always required</span>
</span>
<span class="line" id="L1061"> <span class="tok-comment">// inside if statements, even if there is an `else`.</span>
</span>
<span class="line" id="L1062"> <span class="tok-kw">var</span> else_required = <span class="tok-null">false</span>;</span>
<span class="line" id="L1063"> <span class="tok-kw">const</span> then_expr = blk: {</span>
<span class="line" id="L1064"> <span class="tok-kw">const</span> block_expr = <span class="tok-kw">try</span> p.parseBlockExpr();</span>
<span class="line" id="L1065"> <span class="tok-kw">if</span> (block_expr != <span class="tok-number">0</span>) <span class="tok-kw">break</span> :blk block_expr;</span>
<span class="line" id="L1066"> <span class="tok-kw">const</span> assign_expr = <span class="tok-kw">try</span> p.parseAssignExpr();</span>
<span class="line" id="L1067"> <span class="tok-kw">if</span> (assign_expr == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1068"> <span class="tok-kw">return</span> p.fail(.expected_block_or_assignment);</span>
<span class="line" id="L1069"> }</span>
<span class="line" id="L1070"> <span class="tok-kw">if</span> (p.eatToken(.semicolon)) |_| {</span>
<span class="line" id="L1071"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1072"> .tag = .if_simple,</span>
<span class="line" id="L1073"> .main_token = if_token,</span>
<span class="line" id="L1074"> .data = .{</span>
<span class="line" id="L1075"> .lhs = condition,</span>
<span class="line" id="L1076"> .rhs = assign_expr,</span>
<span class="line" id="L1077"> },</span>
<span class="line" id="L1078"> });</span>
<span class="line" id="L1079"> }</span>
<span class="line" id="L1080"> else_required = <span class="tok-null">true</span>;</span>
<span class="line" id="L1081"> <span class="tok-kw">break</span> :blk assign_expr;</span>
<span class="line" id="L1082"> };</span>
<span class="line" id="L1083"> _ = p.eatToken(.keyword_else) <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L1084"> <span class="tok-kw">if</span> (else_required) {</span>
<span class="line" id="L1085"> <span class="tok-kw">try</span> p.warn(.expected_semi_or_else);</span>
<span class="line" id="L1086"> }</span>
<span class="line" id="L1087"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1088"> .tag = .if_simple,</span>
<span class="line" id="L1089"> .main_token = if_token,</span>
<span class="line" id="L1090"> .data = .{</span>
<span class="line" id="L1091"> .lhs = condition,</span>
<span class="line" id="L1092"> .rhs = then_expr,</span>
<span class="line" id="L1093"> },</span>
<span class="line" id="L1094"> });</span>
<span class="line" id="L1095"> };</span>
<span class="line" id="L1096"> _ = <span class="tok-kw">try</span> p.parsePayload();</span>
<span class="line" id="L1097"> <span class="tok-kw">const</span> else_expr = <span class="tok-kw">try</span> p.expectStatement(<span class="tok-null">false</span>);</span>
<span class="line" id="L1098"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1099"> .tag = .@"if",</span>
<span class="line" id="L1100"> .main_token = if_token,</span>
<span class="line" id="L1101"> .data = .{</span>
<span class="line" id="L1102"> .lhs = condition,</span>
<span class="line" id="L1103"> .rhs = <span class="tok-kw">try</span> p.addExtra(Node.If{</span>
<span class="line" id="L1104"> .then_expr = then_expr,</span>
<span class="line" id="L1105"> .else_expr = else_expr,</span>
<span class="line" id="L1106"> }),</span>
<span class="line" id="L1107"> },</span>
<span class="line" id="L1108"> });</span>
<span class="line" id="L1109">}</span>
<span class="line" id="L1110"></span>
<span class="line" id="L1111"><span class="tok-comment">/// LabeledStatement <- BlockLabel? (Block / LoopStatement)</span></span>
<span class="line" id="L1112"><span class="tok-kw">fn</span> <span class="tok-fn">parseLabeledStatement</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L1113"> <span class="tok-kw">const</span> label_token = p.parseBlockLabel();</span>
<span class="line" id="L1114"> <span class="tok-kw">const</span> block = <span class="tok-kw">try</span> p.parseBlock();</span>
<span class="line" id="L1115"> <span class="tok-kw">if</span> (block != <span class="tok-number">0</span>) <span class="tok-kw">return</span> block;</span>
<span class="line" id="L1116"></span>
<span class="line" id="L1117"> <span class="tok-kw">const</span> loop_stmt = <span class="tok-kw">try</span> p.parseLoopStatement();</span>
<span class="line" id="L1118"> <span class="tok-kw">if</span> (loop_stmt != <span class="tok-number">0</span>) <span class="tok-kw">return</span> loop_stmt;</span>
<span class="line" id="L1119"></span>
<span class="line" id="L1120"> <span class="tok-kw">if</span> (label_token != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1121"> <span class="tok-kw">const</span> after_colon = p.tok_i;</span>
<span class="line" id="L1122"> <span class="tok-kw">const</span> node = <span class="tok-kw">try</span> p.parseTypeExpr();</span>
<span class="line" id="L1123"> <span class="tok-kw">if</span> (node != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1124"> <span class="tok-kw">const</span> a = <span class="tok-kw">try</span> p.parseByteAlign();</span>
<span class="line" id="L1125"> <span class="tok-kw">const</span> b = <span class="tok-kw">try</span> p.parseAddrSpace();</span>
<span class="line" id="L1126"> <span class="tok-kw">const</span> c = <span class="tok-kw">try</span> p.parseLinkSection();</span>
<span class="line" id="L1127"> <span class="tok-kw">const</span> d = <span class="tok-kw">if</span> (p.eatToken(.equal) == <span class="tok-null">null</span>) <span class="tok-number">0</span> <span class="tok-kw">else</span> <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L1128"> <span class="tok-kw">if</span> (a != <span class="tok-number">0</span> <span class="tok-kw">or</span> b != <span class="tok-number">0</span> <span class="tok-kw">or</span> c != <span class="tok-number">0</span> <span class="tok-kw">or</span> d != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1129"> <span class="tok-kw">return</span> p.failMsg(.{ .tag = .expected_var_const, .token = label_token });</span>
<span class="line" id="L1130"> }</span>
<span class="line" id="L1131"> }</span>
<span class="line" id="L1132"> <span class="tok-kw">return</span> p.failMsg(.{ .tag = .expected_labelable, .token = after_colon });</span>
<span class="line" id="L1133"> }</span>
<span class="line" id="L1134"></span>
<span class="line" id="L1135"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L1136">}</span>
<span class="line" id="L1137"></span>
<span class="line" id="L1138"><span class="tok-comment">/// LoopStatement <- KEYWORD_inline? (ForStatement / WhileStatement)</span></span>
<span class="line" id="L1139"><span class="tok-kw">fn</span> <span class="tok-fn">parseLoopStatement</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L1140"> <span class="tok-kw">const</span> inline_token = p.eatToken(.keyword_inline);</span>
<span class="line" id="L1141"></span>
<span class="line" id="L1142"> <span class="tok-kw">const</span> for_statement = <span class="tok-kw">try</span> p.parseForStatement();</span>
<span class="line" id="L1143"> <span class="tok-kw">if</span> (for_statement != <span class="tok-number">0</span>) <span class="tok-kw">return</span> for_statement;</span>
<span class="line" id="L1144"></span>
<span class="line" id="L1145"> <span class="tok-kw">const</span> while_statement = <span class="tok-kw">try</span> p.parseWhileStatement();</span>
<span class="line" id="L1146"> <span class="tok-kw">if</span> (while_statement != <span class="tok-number">0</span>) <span class="tok-kw">return</span> while_statement;</span>
<span class="line" id="L1147"></span>
<span class="line" id="L1148"> <span class="tok-kw">if</span> (inline_token == <span class="tok-null">null</span>) <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L1149"></span>
<span class="line" id="L1150"> <span class="tok-comment">// If we've seen "inline", there should have been a "for" or "while"</span>
</span>
<span class="line" id="L1151"> <span class="tok-kw">return</span> p.fail(.expected_inlinable);</span>
<span class="line" id="L1152">}</span>
<span class="line" id="L1153"></span>
<span class="line" id="L1154"><span class="tok-comment">/// ForStatement</span></span>
<span class="line" id="L1155"><span class="tok-comment">/// <- ForPrefix BlockExpr ( KEYWORD_else Statement )?</span></span>
<span class="line" id="L1156"><span class="tok-comment">/// / ForPrefix AssignExpr ( SEMICOLON / KEYWORD_else Statement )</span></span>
<span class="line" id="L1157"><span class="tok-kw">fn</span> <span class="tok-fn">parseForStatement</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L1158"> <span class="tok-kw">const</span> for_token = p.eatToken(.keyword_for) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L1159"></span>
<span class="line" id="L1160"> <span class="tok-kw">const</span> scratch_top = p.scratch.items.len;</span>
<span class="line" id="L1161"> <span class="tok-kw">defer</span> p.scratch.shrinkRetainingCapacity(scratch_top);</span>
<span class="line" id="L1162"> <span class="tok-kw">const</span> inputs = <span class="tok-kw">try</span> p.forPrefix();</span>
<span class="line" id="L1163"></span>
<span class="line" id="L1164"> <span class="tok-kw">var</span> else_required = <span class="tok-null">false</span>;</span>
<span class="line" id="L1165"> <span class="tok-kw">var</span> seen_semicolon = <span class="tok-null">false</span>;</span>
<span class="line" id="L1166"> <span class="tok-kw">const</span> then_expr = blk: {</span>
<span class="line" id="L1167"> <span class="tok-kw">const</span> block_expr = <span class="tok-kw">try</span> p.parseBlockExpr();</span>
<span class="line" id="L1168"> <span class="tok-kw">if</span> (block_expr != <span class="tok-number">0</span>) <span class="tok-kw">break</span> :blk block_expr;</span>
<span class="line" id="L1169"> <span class="tok-kw">const</span> assign_expr = <span class="tok-kw">try</span> p.parseAssignExpr();</span>
<span class="line" id="L1170"> <span class="tok-kw">if</span> (assign_expr == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1171"> <span class="tok-kw">return</span> p.fail(.expected_block_or_assignment);</span>
<span class="line" id="L1172"> }</span>
<span class="line" id="L1173"> <span class="tok-kw">if</span> (p.eatToken(.semicolon)) |_| {</span>
<span class="line" id="L1174"> seen_semicolon = <span class="tok-null">true</span>;</span>
<span class="line" id="L1175"> <span class="tok-kw">break</span> :blk assign_expr;</span>
<span class="line" id="L1176"> }</span>
<span class="line" id="L1177"> else_required = <span class="tok-null">true</span>;</span>
<span class="line" id="L1178"> <span class="tok-kw">break</span> :blk assign_expr;</span>
<span class="line" id="L1179"> };</span>
<span class="line" id="L1180"> <span class="tok-kw">var</span> has_else = <span class="tok-null">false</span>;</span>
<span class="line" id="L1181"> <span class="tok-kw">if</span> (!seen_semicolon <span class="tok-kw">and</span> p.eatToken(.keyword_else) != <span class="tok-null">null</span>) {</span>
<span class="line" id="L1182"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, then_expr);</span>
<span class="line" id="L1183"> <span class="tok-kw">const</span> else_stmt = <span class="tok-kw">try</span> p.expectStatement(<span class="tok-null">false</span>);</span>
<span class="line" id="L1184"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, else_stmt);</span>
<span class="line" id="L1185"> has_else = <span class="tok-null">true</span>;</span>
<span class="line" id="L1186"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (inputs == <span class="tok-number">1</span>) {</span>
<span class="line" id="L1187"> <span class="tok-kw">if</span> (else_required) <span class="tok-kw">try</span> p.warn(.expected_semi_or_else);</span>
<span class="line" id="L1188"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1189"> .tag = .for_simple,</span>
<span class="line" id="L1190"> .main_token = for_token,</span>
<span class="line" id="L1191"> .data = .{</span>
<span class="line" id="L1192"> .lhs = p.scratch.items[scratch_top],</span>
<span class="line" id="L1193"> .rhs = then_expr,</span>
<span class="line" id="L1194"> },</span>
<span class="line" id="L1195"> });</span>
<span class="line" id="L1196"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1197"> <span class="tok-kw">if</span> (else_required) <span class="tok-kw">try</span> p.warn(.expected_semi_or_else);</span>
<span class="line" id="L1198"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, then_expr);</span>
<span class="line" id="L1199"> }</span>
<span class="line" id="L1200"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1201"> .tag = .@"for",</span>
<span class="line" id="L1202"> .main_token = for_token,</span>
<span class="line" id="L1203"> .data = .{</span>
<span class="line" id="L1204"> .lhs = (<span class="tok-kw">try</span> p.listToSpan(p.scratch.items[scratch_top..])).start,</span>
<span class="line" id="L1205"> .rhs = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@bitCast</span>(Node.For{</span>
<span class="line" id="L1206"> .inputs = <span class="tok-builtin">@as</span>(<span class="tok-type">u31</span>, <span class="tok-builtin">@intCast</span>(inputs)),</span>
<span class="line" id="L1207"> .has_else = has_else,</span>
<span class="line" id="L1208"> })),</span>
<span class="line" id="L1209"> },</span>
<span class="line" id="L1210"> });</span>
<span class="line" id="L1211">}</span>
<span class="line" id="L1212"></span>
<span class="line" id="L1213"><span class="tok-comment">/// WhilePrefix <- KEYWORD_while LPAREN Expr RPAREN PtrPayload? WhileContinueExpr?</span></span>
<span class="line" id="L1214"><span class="tok-comment">///</span></span>
<span class="line" id="L1215"><span class="tok-comment">/// WhileStatement</span></span>
<span class="line" id="L1216"><span class="tok-comment">/// <- WhilePrefix BlockExpr ( KEYWORD_else Payload? Statement )?</span></span>
<span class="line" id="L1217"><span class="tok-comment">/// / WhilePrefix AssignExpr ( SEMICOLON / KEYWORD_else Payload? Statement )</span></span>
<span class="line" id="L1218"><span class="tok-kw">fn</span> <span class="tok-fn">parseWhileStatement</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L1219"> <span class="tok-kw">const</span> while_token = p.eatToken(.keyword_while) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L1220"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L1221"> <span class="tok-kw">const</span> condition = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L1222"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L1223"> _ = <span class="tok-kw">try</span> p.parsePtrPayload();</span>
<span class="line" id="L1224"> <span class="tok-kw">const</span> cont_expr = <span class="tok-kw">try</span> p.parseWhileContinueExpr();</span>
<span class="line" id="L1225"></span>
<span class="line" id="L1226"> <span class="tok-comment">// TODO propose to change the syntax so that semicolons are always required</span>
</span>
<span class="line" id="L1227"> <span class="tok-comment">// inside while statements, even if there is an `else`.</span>
</span>
<span class="line" id="L1228"> <span class="tok-kw">var</span> else_required = <span class="tok-null">false</span>;</span>
<span class="line" id="L1229"> <span class="tok-kw">const</span> then_expr = blk: {</span>
<span class="line" id="L1230"> <span class="tok-kw">const</span> block_expr = <span class="tok-kw">try</span> p.parseBlockExpr();</span>
<span class="line" id="L1231"> <span class="tok-kw">if</span> (block_expr != <span class="tok-number">0</span>) <span class="tok-kw">break</span> :blk block_expr;</span>
<span class="line" id="L1232"> <span class="tok-kw">const</span> assign_expr = <span class="tok-kw">try</span> p.parseAssignExpr();</span>
<span class="line" id="L1233"> <span class="tok-kw">if</span> (assign_expr == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1234"> <span class="tok-kw">return</span> p.fail(.expected_block_or_assignment);</span>
<span class="line" id="L1235"> }</span>
<span class="line" id="L1236"> <span class="tok-kw">if</span> (p.eatToken(.semicolon)) |_| {</span>
<span class="line" id="L1237"> <span class="tok-kw">if</span> (cont_expr == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1238"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1239"> .tag = .while_simple,</span>
<span class="line" id="L1240"> .main_token = while_token,</span>
<span class="line" id="L1241"> .data = .{</span>
<span class="line" id="L1242"> .lhs = condition,</span>
<span class="line" id="L1243"> .rhs = assign_expr,</span>
<span class="line" id="L1244"> },</span>
<span class="line" id="L1245"> });</span>
<span class="line" id="L1246"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1247"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1248"> .tag = .while_cont,</span>
<span class="line" id="L1249"> .main_token = while_token,</span>
<span class="line" id="L1250"> .data = .{</span>
<span class="line" id="L1251"> .lhs = condition,</span>
<span class="line" id="L1252"> .rhs = <span class="tok-kw">try</span> p.addExtra(Node.WhileCont{</span>
<span class="line" id="L1253"> .cont_expr = cont_expr,</span>
<span class="line" id="L1254"> .then_expr = assign_expr,</span>
<span class="line" id="L1255"> }),</span>
<span class="line" id="L1256"> },</span>
<span class="line" id="L1257"> });</span>
<span class="line" id="L1258"> }</span>
<span class="line" id="L1259"> }</span>
<span class="line" id="L1260"> else_required = <span class="tok-null">true</span>;</span>
<span class="line" id="L1261"> <span class="tok-kw">break</span> :blk assign_expr;</span>
<span class="line" id="L1262"> };</span>
<span class="line" id="L1263"> _ = p.eatToken(.keyword_else) <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L1264"> <span class="tok-kw">if</span> (else_required) {</span>
<span class="line" id="L1265"> <span class="tok-kw">try</span> p.warn(.expected_semi_or_else);</span>
<span class="line" id="L1266"> }</span>
<span class="line" id="L1267"> <span class="tok-kw">if</span> (cont_expr == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1268"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1269"> .tag = .while_simple,</span>
<span class="line" id="L1270"> .main_token = while_token,</span>
<span class="line" id="L1271"> .data = .{</span>
<span class="line" id="L1272"> .lhs = condition,</span>
<span class="line" id="L1273"> .rhs = then_expr,</span>
<span class="line" id="L1274"> },</span>
<span class="line" id="L1275"> });</span>
<span class="line" id="L1276"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1277"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1278"> .tag = .while_cont,</span>
<span class="line" id="L1279"> .main_token = while_token,</span>
<span class="line" id="L1280"> .data = .{</span>
<span class="line" id="L1281"> .lhs = condition,</span>
<span class="line" id="L1282"> .rhs = <span class="tok-kw">try</span> p.addExtra(Node.WhileCont{</span>
<span class="line" id="L1283"> .cont_expr = cont_expr,</span>
<span class="line" id="L1284"> .then_expr = then_expr,</span>
<span class="line" id="L1285"> }),</span>
<span class="line" id="L1286"> },</span>
<span class="line" id="L1287"> });</span>
<span class="line" id="L1288"> }</span>
<span class="line" id="L1289"> };</span>
<span class="line" id="L1290"> _ = <span class="tok-kw">try</span> p.parsePayload();</span>
<span class="line" id="L1291"> <span class="tok-kw">const</span> else_expr = <span class="tok-kw">try</span> p.expectStatement(<span class="tok-null">false</span>);</span>
<span class="line" id="L1292"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1293"> .tag = .@"while",</span>
<span class="line" id="L1294"> .main_token = while_token,</span>
<span class="line" id="L1295"> .data = .{</span>
<span class="line" id="L1296"> .lhs = condition,</span>
<span class="line" id="L1297"> .rhs = <span class="tok-kw">try</span> p.addExtra(Node.While{</span>
<span class="line" id="L1298"> .cont_expr = cont_expr,</span>
<span class="line" id="L1299"> .then_expr = then_expr,</span>
<span class="line" id="L1300"> .else_expr = else_expr,</span>
<span class="line" id="L1301"> }),</span>
<span class="line" id="L1302"> },</span>
<span class="line" id="L1303"> });</span>
<span class="line" id="L1304">}</span>
<span class="line" id="L1305"></span>
<span class="line" id="L1306"><span class="tok-comment">/// BlockExprStatement</span></span>
<span class="line" id="L1307"><span class="tok-comment">/// <- BlockExpr</span></span>
<span class="line" id="L1308"><span class="tok-comment">/// / AssignExpr SEMICOLON</span></span>
<span class="line" id="L1309"><span class="tok-kw">fn</span> <span class="tok-fn">parseBlockExprStatement</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L1310"> <span class="tok-kw">const</span> block_expr = <span class="tok-kw">try</span> p.parseBlockExpr();</span>
<span class="line" id="L1311"> <span class="tok-kw">if</span> (block_expr != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1312"> <span class="tok-kw">return</span> block_expr;</span>
<span class="line" id="L1313"> }</span>
<span class="line" id="L1314"> <span class="tok-kw">const</span> assign_expr = <span class="tok-kw">try</span> p.parseAssignExpr();</span>
<span class="line" id="L1315"> <span class="tok-kw">if</span> (assign_expr != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1316"> <span class="tok-kw">try</span> p.expectSemicolon(.expected_semi_after_stmt, <span class="tok-null">true</span>);</span>
<span class="line" id="L1317"> <span class="tok-kw">return</span> assign_expr;</span>
<span class="line" id="L1318"> }</span>
<span class="line" id="L1319"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L1320">}</span>
<span class="line" id="L1321"></span>
<span class="line" id="L1322"><span class="tok-kw">fn</span> <span class="tok-fn">expectBlockExprStatement</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L1323"> <span class="tok-kw">const</span> node = <span class="tok-kw">try</span> p.parseBlockExprStatement();</span>
<span class="line" id="L1324"> <span class="tok-kw">if</span> (node == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1325"> <span class="tok-kw">return</span> p.fail(.expected_block_or_expr);</span>
<span class="line" id="L1326"> }</span>
<span class="line" id="L1327"> <span class="tok-kw">return</span> node;</span>
<span class="line" id="L1328">}</span>
<span class="line" id="L1329"></span>
<span class="line" id="L1330"><span class="tok-comment">/// BlockExpr <- BlockLabel? Block</span></span>
<span class="line" id="L1331"><span class="tok-kw">fn</span> <span class="tok-fn">parseBlockExpr</span>(p: *Parse) Error!Node.Index {</span>
<span class="line" id="L1332"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L1333"> .identifier => {</span>
<span class="line" id="L1334"> <span class="tok-kw">if</span> (p.token_tags[p.tok_i + <span class="tok-number">1</span>] == .colon <span class="tok-kw">and</span></span>
<span class="line" id="L1335"> p.token_tags[p.tok_i + <span class="tok-number">2</span>] == .l_brace)</span>
<span class="line" id="L1336"> {</span>
<span class="line" id="L1337"> p.tok_i += <span class="tok-number">2</span>;</span>
<span class="line" id="L1338"> <span class="tok-kw">return</span> p.parseBlock();</span>
<span class="line" id="L1339"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1340"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L1341"> }</span>
<span class="line" id="L1342"> },</span>
<span class="line" id="L1343"> .l_brace => <span class="tok-kw">return</span> p.parseBlock(),</span>
<span class="line" id="L1344"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> null_node,</span>
<span class="line" id="L1345"> }</span>
<span class="line" id="L1346">}</span>
<span class="line" id="L1347"></span>
<span class="line" id="L1348"><span class="tok-comment">/// AssignExpr <- Expr (AssignOp Expr)?</span></span>
<span class="line" id="L1349"><span class="tok-comment">///</span></span>
<span class="line" id="L1350"><span class="tok-comment">/// AssignOp</span></span>
<span class="line" id="L1351"><span class="tok-comment">/// <- ASTERISKEQUAL</span></span>
<span class="line" id="L1352"><span class="tok-comment">/// / ASTERISKPIPEEQUAL</span></span>
<span class="line" id="L1353"><span class="tok-comment">/// / SLASHEQUAL</span></span>
<span class="line" id="L1354"><span class="tok-comment">/// / PERCENTEQUAL</span></span>
<span class="line" id="L1355"><span class="tok-comment">/// / PLUSEQUAL</span></span>
<span class="line" id="L1356"><span class="tok-comment">/// / PLUSPIPEEQUAL</span></span>
<span class="line" id="L1357"><span class="tok-comment">/// / MINUSEQUAL</span></span>
<span class="line" id="L1358"><span class="tok-comment">/// / MINUSPIPEEQUAL</span></span>
<span class="line" id="L1359"><span class="tok-comment">/// / LARROW2EQUAL</span></span>
<span class="line" id="L1360"><span class="tok-comment">/// / LARROW2PIPEEQUAL</span></span>
<span class="line" id="L1361"><span class="tok-comment">/// / RARROW2EQUAL</span></span>
<span class="line" id="L1362"><span class="tok-comment">/// / AMPERSANDEQUAL</span></span>
<span class="line" id="L1363"><span class="tok-comment">/// / CARETEQUAL</span></span>
<span class="line" id="L1364"><span class="tok-comment">/// / PIPEEQUAL</span></span>
<span class="line" id="L1365"><span class="tok-comment">/// / ASTERISKPERCENTEQUAL</span></span>
<span class="line" id="L1366"><span class="tok-comment">/// / PLUSPERCENTEQUAL</span></span>
<span class="line" id="L1367"><span class="tok-comment">/// / MINUSPERCENTEQUAL</span></span>
<span class="line" id="L1368"><span class="tok-comment">/// / EQUAL</span></span>
<span class="line" id="L1369"><span class="tok-kw">fn</span> <span class="tok-fn">parseAssignExpr</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L1370"> <span class="tok-kw">const</span> expr = <span class="tok-kw">try</span> p.parseExpr();</span>
<span class="line" id="L1371"> <span class="tok-kw">if</span> (expr == <span class="tok-number">0</span>) <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L1372"></span>
<span class="line" id="L1373"> <span class="tok-kw">const</span> tag: Node.Tag = <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L1374"> .asterisk_equal => .assign_mul,</span>
<span class="line" id="L1375"> .slash_equal => .assign_div,</span>
<span class="line" id="L1376"> .percent_equal => .assign_mod,</span>
<span class="line" id="L1377"> .plus_equal => .assign_add,</span>
<span class="line" id="L1378"> .minus_equal => .assign_sub,</span>
<span class="line" id="L1379"> .angle_bracket_angle_bracket_left_equal => .assign_shl,</span>
<span class="line" id="L1380"> .angle_bracket_angle_bracket_left_pipe_equal => .assign_shl_sat,</span>
<span class="line" id="L1381"> .angle_bracket_angle_bracket_right_equal => .assign_shr,</span>
<span class="line" id="L1382"> .ampersand_equal => .assign_bit_and,</span>
<span class="line" id="L1383"> .caret_equal => .assign_bit_xor,</span>
<span class="line" id="L1384"> .pipe_equal => .assign_bit_or,</span>
<span class="line" id="L1385"> .asterisk_percent_equal => .assign_mul_wrap,</span>
<span class="line" id="L1386"> .plus_percent_equal => .assign_add_wrap,</span>
<span class="line" id="L1387"> .minus_percent_equal => .assign_sub_wrap,</span>
<span class="line" id="L1388"> .asterisk_pipe_equal => .assign_mul_sat,</span>
<span class="line" id="L1389"> .plus_pipe_equal => .assign_add_sat,</span>
<span class="line" id="L1390"> .minus_pipe_equal => .assign_sub_sat,</span>
<span class="line" id="L1391"> .equal => .assign,</span>
<span class="line" id="L1392"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> expr,</span>
<span class="line" id="L1393"> };</span>
<span class="line" id="L1394"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1395"> .tag = tag,</span>
<span class="line" id="L1396"> .main_token = p.nextToken(),</span>
<span class="line" id="L1397"> .data = .{</span>
<span class="line" id="L1398"> .lhs = expr,</span>
<span class="line" id="L1399"> .rhs = <span class="tok-kw">try</span> p.expectExpr(),</span>
<span class="line" id="L1400"> },</span>
<span class="line" id="L1401"> });</span>
<span class="line" id="L1402">}</span>
<span class="line" id="L1403"></span>
<span class="line" id="L1404"><span class="tok-kw">fn</span> <span class="tok-fn">expectAssignExpr</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L1405"> <span class="tok-kw">const</span> expr = <span class="tok-kw">try</span> p.parseAssignExpr();</span>
<span class="line" id="L1406"> <span class="tok-kw">if</span> (expr == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1407"> <span class="tok-kw">return</span> p.fail(.expected_expr_or_assignment);</span>
<span class="line" id="L1408"> }</span>
<span class="line" id="L1409"> <span class="tok-kw">return</span> expr;</span>
<span class="line" id="L1410">}</span>
<span class="line" id="L1411"></span>
<span class="line" id="L1412"><span class="tok-kw">fn</span> <span class="tok-fn">parseExpr</span>(p: *Parse) Error!Node.Index {</span>
<span class="line" id="L1413"> <span class="tok-kw">return</span> p.parseExprPrecedence(<span class="tok-number">0</span>);</span>
<span class="line" id="L1414">}</span>
<span class="line" id="L1415"></span>
<span class="line" id="L1416"><span class="tok-kw">fn</span> <span class="tok-fn">expectExpr</span>(p: *Parse) Error!Node.Index {</span>
<span class="line" id="L1417"> <span class="tok-kw">const</span> node = <span class="tok-kw">try</span> p.parseExpr();</span>
<span class="line" id="L1418"> <span class="tok-kw">if</span> (node == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1419"> <span class="tok-kw">return</span> p.fail(.expected_expr);</span>
<span class="line" id="L1420"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1421"> <span class="tok-kw">return</span> node;</span>
<span class="line" id="L1422"> }</span>
<span class="line" id="L1423">}</span>
<span class="line" id="L1424"></span>
<span class="line" id="L1425"><span class="tok-kw">const</span> Assoc = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L1426"> left,</span>
<span class="line" id="L1427"> none,</span>
<span class="line" id="L1428">};</span>
<span class="line" id="L1429"></span>
<span class="line" id="L1430"><span class="tok-kw">const</span> OperInfo = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L1431"> prec: <span class="tok-type">i8</span>,</span>
<span class="line" id="L1432"> tag: Node.Tag,</span>
<span class="line" id="L1433"> assoc: Assoc = Assoc.left,</span>
<span class="line" id="L1434">};</span>
<span class="line" id="L1435"></span>
<span class="line" id="L1436"><span class="tok-comment">// A table of binary operator information. Higher precedence numbers are</span>
</span>
<span class="line" id="L1437"><span class="tok-comment">// stickier. All operators at the same precedence level should have the same</span>
</span>
<span class="line" id="L1438"><span class="tok-comment">// associativity.</span>
</span>
<span class="line" id="L1439"><span class="tok-kw">const</span> operTable = std.enums.directEnumArrayDefault(Token.Tag, OperInfo, .{ .prec = -<span class="tok-number">1</span>, .tag = Node.Tag.root }, <span class="tok-number">0</span>, .{</span>
<span class="line" id="L1440"> .keyword_or = .{ .prec = <span class="tok-number">10</span>, .tag = .bool_or },</span>
<span class="line" id="L1441"></span>
<span class="line" id="L1442"> .keyword_and = .{ .prec = <span class="tok-number">20</span>, .tag = .bool_and },</span>
<span class="line" id="L1443"></span>
<span class="line" id="L1444"> .equal_equal = .{ .prec = <span class="tok-number">30</span>, .tag = .equal_equal, .assoc = Assoc.none },</span>
<span class="line" id="L1445"> .bang_equal = .{ .prec = <span class="tok-number">30</span>, .tag = .bang_equal, .assoc = Assoc.none },</span>
<span class="line" id="L1446"> .angle_bracket_left = .{ .prec = <span class="tok-number">30</span>, .tag = .less_than, .assoc = Assoc.none },</span>
<span class="line" id="L1447"> .angle_bracket_right = .{ .prec = <span class="tok-number">30</span>, .tag = .greater_than, .assoc = Assoc.none },</span>
<span class="line" id="L1448"> .angle_bracket_left_equal = .{ .prec = <span class="tok-number">30</span>, .tag = .less_or_equal, .assoc = Assoc.none },</span>
<span class="line" id="L1449"> .angle_bracket_right_equal = .{ .prec = <span class="tok-number">30</span>, .tag = .greater_or_equal, .assoc = Assoc.none },</span>
<span class="line" id="L1450"></span>
<span class="line" id="L1451"> .ampersand = .{ .prec = <span class="tok-number">40</span>, .tag = .bit_and },</span>
<span class="line" id="L1452"> .caret = .{ .prec = <span class="tok-number">40</span>, .tag = .bit_xor },</span>
<span class="line" id="L1453"> .pipe = .{ .prec = <span class="tok-number">40</span>, .tag = .bit_or },</span>
<span class="line" id="L1454"> .keyword_orelse = .{ .prec = <span class="tok-number">40</span>, .tag = .@"orelse" },</span>
<span class="line" id="L1455"> .keyword_catch = .{ .prec = <span class="tok-number">40</span>, .tag = .@"catch" },</span>
<span class="line" id="L1456"></span>
<span class="line" id="L1457"> .angle_bracket_angle_bracket_left = .{ .prec = <span class="tok-number">50</span>, .tag = .shl },</span>
<span class="line" id="L1458"> .angle_bracket_angle_bracket_left_pipe = .{ .prec = <span class="tok-number">50</span>, .tag = .shl_sat },</span>
<span class="line" id="L1459"> .angle_bracket_angle_bracket_right = .{ .prec = <span class="tok-number">50</span>, .tag = .shr },</span>
<span class="line" id="L1460"></span>
<span class="line" id="L1461"> .plus = .{ .prec = <span class="tok-number">60</span>, .tag = .add },</span>
<span class="line" id="L1462"> .minus = .{ .prec = <span class="tok-number">60</span>, .tag = .sub },</span>
<span class="line" id="L1463"> .plus_plus = .{ .prec = <span class="tok-number">60</span>, .tag = .array_cat },</span>
<span class="line" id="L1464"> .plus_percent = .{ .prec = <span class="tok-number">60</span>, .tag = .add_wrap },</span>
<span class="line" id="L1465"> .minus_percent = .{ .prec = <span class="tok-number">60</span>, .tag = .sub_wrap },</span>
<span class="line" id="L1466"> .plus_pipe = .{ .prec = <span class="tok-number">60</span>, .tag = .add_sat },</span>
<span class="line" id="L1467"> .minus_pipe = .{ .prec = <span class="tok-number">60</span>, .tag = .sub_sat },</span>
<span class="line" id="L1468"></span>
<span class="line" id="L1469"> .pipe_pipe = .{ .prec = <span class="tok-number">70</span>, .tag = .merge_error_sets },</span>
<span class="line" id="L1470"> .asterisk = .{ .prec = <span class="tok-number">70</span>, .tag = .mul },</span>
<span class="line" id="L1471"> .slash = .{ .prec = <span class="tok-number">70</span>, .tag = .div },</span>
<span class="line" id="L1472"> .percent = .{ .prec = <span class="tok-number">70</span>, .tag = .mod },</span>
<span class="line" id="L1473"> .asterisk_asterisk = .{ .prec = <span class="tok-number">70</span>, .tag = .array_mult },</span>
<span class="line" id="L1474"> .asterisk_percent = .{ .prec = <span class="tok-number">70</span>, .tag = .mul_wrap },</span>
<span class="line" id="L1475"> .asterisk_pipe = .{ .prec = <span class="tok-number">70</span>, .tag = .mul_sat },</span>
<span class="line" id="L1476">});</span>
<span class="line" id="L1477"></span>
<span class="line" id="L1478"><span class="tok-kw">fn</span> <span class="tok-fn">parseExprPrecedence</span>(p: *Parse, min_prec: <span class="tok-type">i32</span>) Error!Node.Index {</span>
<span class="line" id="L1479"> assert(min_prec >= <span class="tok-number">0</span>);</span>
<span class="line" id="L1480"> <span class="tok-kw">var</span> node = <span class="tok-kw">try</span> p.parsePrefixExpr();</span>
<span class="line" id="L1481"> <span class="tok-kw">if</span> (node == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1482"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L1483"> }</span>
<span class="line" id="L1484"></span>
<span class="line" id="L1485"> <span class="tok-kw">var</span> banned_prec: <span class="tok-type">i8</span> = -<span class="tok-number">1</span>;</span>
<span class="line" id="L1486"></span>
<span class="line" id="L1487"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L1488"> <span class="tok-kw">const</span> tok_tag = p.token_tags[p.tok_i];</span>
<span class="line" id="L1489"> <span class="tok-kw">const</span> info = operTable[<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(<span class="tok-builtin">@intFromEnum</span>(tok_tag)))];</span>
<span class="line" id="L1490"> <span class="tok-kw">if</span> (info.prec < min_prec) {</span>
<span class="line" id="L1491"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1492"> }</span>
<span class="line" id="L1493"> <span class="tok-kw">if</span> (info.prec == banned_prec) {</span>
<span class="line" id="L1494"> <span class="tok-kw">return</span> p.fail(.chained_comparison_operators);</span>
<span class="line" id="L1495"> }</span>
<span class="line" id="L1496"></span>
<span class="line" id="L1497"> <span class="tok-kw">const</span> oper_token = p.nextToken();</span>
<span class="line" id="L1498"> <span class="tok-comment">// Special-case handling for "catch"</span>
</span>
<span class="line" id="L1499"> <span class="tok-kw">if</span> (tok_tag == .keyword_catch) {</span>
<span class="line" id="L1500"> _ = <span class="tok-kw">try</span> p.parsePayload();</span>
<span class="line" id="L1501"> }</span>
<span class="line" id="L1502"> <span class="tok-kw">const</span> rhs = <span class="tok-kw">try</span> p.parseExprPrecedence(info.prec + <span class="tok-number">1</span>);</span>
<span class="line" id="L1503"> <span class="tok-kw">if</span> (rhs == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1504"> <span class="tok-kw">try</span> p.warn(.expected_expr);</span>
<span class="line" id="L1505"> <span class="tok-kw">return</span> node;</span>
<span class="line" id="L1506"> }</span>
<span class="line" id="L1507"></span>
<span class="line" id="L1508"> {</span>
<span class="line" id="L1509"> <span class="tok-kw">const</span> tok_len = tok_tag.lexeme().?.len;</span>
<span class="line" id="L1510"> <span class="tok-kw">const</span> char_before = p.source[p.token_starts[oper_token] - <span class="tok-number">1</span>];</span>
<span class="line" id="L1511"> <span class="tok-kw">const</span> char_after = p.source[p.token_starts[oper_token] + tok_len];</span>
<span class="line" id="L1512"> <span class="tok-kw">if</span> (tok_tag == .ampersand <span class="tok-kw">and</span> char_after == <span class="tok-str">'&'</span>) {</span>
<span class="line" id="L1513"> <span class="tok-comment">// without types we don't know if '&&' was intended as 'bitwise_and address_of', or a c-style logical_and</span>
</span>
<span class="line" id="L1514"> <span class="tok-comment">// The best the parser can do is recommend changing it to 'and' or ' & &'</span>
</span>
<span class="line" id="L1515"> <span class="tok-kw">try</span> p.warnMsg(.{ .tag = .invalid_ampersand_ampersand, .token = oper_token });</span>
<span class="line" id="L1516"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (std.ascii.isWhitespace(char_before) != std.ascii.isWhitespace(char_after)) {</span>
<span class="line" id="L1517"> <span class="tok-kw">try</span> p.warnMsg(.{ .tag = .mismatched_binary_op_whitespace, .token = oper_token });</span>
<span class="line" id="L1518"> }</span>
<span class="line" id="L1519"> }</span>
<span class="line" id="L1520"></span>
<span class="line" id="L1521"> node = <span class="tok-kw">try</span> p.addNode(.{</span>
<span class="line" id="L1522"> .tag = info.tag,</span>
<span class="line" id="L1523"> .main_token = oper_token,</span>
<span class="line" id="L1524"> .data = .{</span>
<span class="line" id="L1525"> .lhs = node,</span>
<span class="line" id="L1526"> .rhs = rhs,</span>
<span class="line" id="L1527"> },</span>
<span class="line" id="L1528"> });</span>
<span class="line" id="L1529"></span>
<span class="line" id="L1530"> <span class="tok-kw">if</span> (info.assoc == Assoc.none) {</span>
<span class="line" id="L1531"> banned_prec = info.prec;</span>
<span class="line" id="L1532"> }</span>
<span class="line" id="L1533"> }</span>
<span class="line" id="L1534"></span>
<span class="line" id="L1535"> <span class="tok-kw">return</span> node;</span>
<span class="line" id="L1536">}</span>
<span class="line" id="L1537"></span>
<span class="line" id="L1538"><span class="tok-comment">/// PrefixExpr <- PrefixOp* PrimaryExpr</span></span>
<span class="line" id="L1539"><span class="tok-comment">///</span></span>
<span class="line" id="L1540"><span class="tok-comment">/// PrefixOp</span></span>
<span class="line" id="L1541"><span class="tok-comment">/// <- EXCLAMATIONMARK</span></span>
<span class="line" id="L1542"><span class="tok-comment">/// / MINUS</span></span>
<span class="line" id="L1543"><span class="tok-comment">/// / TILDE</span></span>
<span class="line" id="L1544"><span class="tok-comment">/// / MINUSPERCENT</span></span>
<span class="line" id="L1545"><span class="tok-comment">/// / AMPERSAND</span></span>
<span class="line" id="L1546"><span class="tok-comment">/// / KEYWORD_try</span></span>
<span class="line" id="L1547"><span class="tok-comment">/// / KEYWORD_await</span></span>
<span class="line" id="L1548"><span class="tok-kw">fn</span> <span class="tok-fn">parsePrefixExpr</span>(p: *Parse) Error!Node.Index {</span>
<span class="line" id="L1549"> <span class="tok-kw">const</span> tag: Node.Tag = <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L1550"> .bang => .bool_not,</span>
<span class="line" id="L1551"> .minus => .negation,</span>
<span class="line" id="L1552"> .tilde => .bit_not,</span>
<span class="line" id="L1553"> .minus_percent => .negation_wrap,</span>
<span class="line" id="L1554"> .ampersand => .address_of,</span>
<span class="line" id="L1555"> .keyword_try => .@"try",</span>
<span class="line" id="L1556"> .keyword_await => .@"await",</span>
<span class="line" id="L1557"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> p.parsePrimaryExpr(),</span>
<span class="line" id="L1558"> };</span>
<span class="line" id="L1559"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1560"> .tag = tag,</span>
<span class="line" id="L1561"> .main_token = p.nextToken(),</span>
<span class="line" id="L1562"> .data = .{</span>
<span class="line" id="L1563"> .lhs = <span class="tok-kw">try</span> p.expectPrefixExpr(),</span>
<span class="line" id="L1564"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1565"> },</span>
<span class="line" id="L1566"> });</span>
<span class="line" id="L1567">}</span>
<span class="line" id="L1568"></span>
<span class="line" id="L1569"><span class="tok-kw">fn</span> <span class="tok-fn">expectPrefixExpr</span>(p: *Parse) Error!Node.Index {</span>
<span class="line" id="L1570"> <span class="tok-kw">const</span> node = <span class="tok-kw">try</span> p.parsePrefixExpr();</span>
<span class="line" id="L1571"> <span class="tok-kw">if</span> (node == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1572"> <span class="tok-kw">return</span> p.fail(.expected_prefix_expr);</span>
<span class="line" id="L1573"> }</span>
<span class="line" id="L1574"> <span class="tok-kw">return</span> node;</span>
<span class="line" id="L1575">}</span>
<span class="line" id="L1576"></span>
<span class="line" id="L1577"><span class="tok-comment">/// TypeExpr <- PrefixTypeOp* ErrorUnionExpr</span></span>
<span class="line" id="L1578"><span class="tok-comment">///</span></span>
<span class="line" id="L1579"><span class="tok-comment">/// PrefixTypeOp</span></span>
<span class="line" id="L1580"><span class="tok-comment">/// <- QUESTIONMARK</span></span>
<span class="line" id="L1581"><span class="tok-comment">/// / KEYWORD_anyframe MINUSRARROW</span></span>
<span class="line" id="L1582"><span class="tok-comment">/// / SliceTypeStart (ByteAlign / AddrSpace / KEYWORD_const / KEYWORD_volatile / KEYWORD_allowzero)*</span></span>
<span class="line" id="L1583"><span class="tok-comment">/// / PtrTypeStart (AddrSpace / KEYWORD_align LPAREN Expr (COLON Expr COLON Expr)? RPAREN / KEYWORD_const / KEYWORD_volatile / KEYWORD_allowzero)*</span></span>
<span class="line" id="L1584"><span class="tok-comment">/// / ArrayTypeStart</span></span>
<span class="line" id="L1585"><span class="tok-comment">///</span></span>
<span class="line" id="L1586"><span class="tok-comment">/// SliceTypeStart <- LBRACKET (COLON Expr)? RBRACKET</span></span>
<span class="line" id="L1587"><span class="tok-comment">///</span></span>
<span class="line" id="L1588"><span class="tok-comment">/// PtrTypeStart</span></span>
<span class="line" id="L1589"><span class="tok-comment">/// <- ASTERISK</span></span>
<span class="line" id="L1590"><span class="tok-comment">/// / ASTERISK2</span></span>
<span class="line" id="L1591"><span class="tok-comment">/// / LBRACKET ASTERISK (LETTERC / COLON Expr)? RBRACKET</span></span>
<span class="line" id="L1592"><span class="tok-comment">///</span></span>
<span class="line" id="L1593"><span class="tok-comment">/// ArrayTypeStart <- LBRACKET Expr (COLON Expr)? RBRACKET</span></span>
<span class="line" id="L1594"><span class="tok-kw">fn</span> <span class="tok-fn">parseTypeExpr</span>(p: *Parse) Error!Node.Index {</span>
<span class="line" id="L1595"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L1596"> .question_mark => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1597"> .tag = .optional_type,</span>
<span class="line" id="L1598"> .main_token = p.nextToken(),</span>
<span class="line" id="L1599"> .data = .{</span>
<span class="line" id="L1600"> .lhs = <span class="tok-kw">try</span> p.expectTypeExpr(),</span>
<span class="line" id="L1601"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1602"> },</span>
<span class="line" id="L1603"> }),</span>
<span class="line" id="L1604"> .keyword_anyframe => <span class="tok-kw">switch</span> (p.token_tags[p.tok_i + <span class="tok-number">1</span>]) {</span>
<span class="line" id="L1605"> .arrow => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1606"> .tag = .anyframe_type,</span>
<span class="line" id="L1607"> .main_token = p.nextToken(),</span>
<span class="line" id="L1608"> .data = .{</span>
<span class="line" id="L1609"> .lhs = p.nextToken(),</span>
<span class="line" id="L1610"> .rhs = <span class="tok-kw">try</span> p.expectTypeExpr(),</span>
<span class="line" id="L1611"> },</span>
<span class="line" id="L1612"> }),</span>
<span class="line" id="L1613"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> p.parseErrorUnionExpr(),</span>
<span class="line" id="L1614"> },</span>
<span class="line" id="L1615"> .asterisk => {</span>
<span class="line" id="L1616"> <span class="tok-kw">const</span> asterisk = p.nextToken();</span>
<span class="line" id="L1617"> <span class="tok-kw">const</span> mods = <span class="tok-kw">try</span> p.parsePtrModifiers();</span>
<span class="line" id="L1618"> <span class="tok-kw">const</span> elem_type = <span class="tok-kw">try</span> p.expectTypeExpr();</span>
<span class="line" id="L1619"> <span class="tok-kw">if</span> (mods.bit_range_start != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1620"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1621"> .tag = .ptr_type_bit_range,</span>
<span class="line" id="L1622"> .main_token = asterisk,</span>
<span class="line" id="L1623"> .data = .{</span>
<span class="line" id="L1624"> .lhs = <span class="tok-kw">try</span> p.addExtra(Node.PtrTypeBitRange{</span>
<span class="line" id="L1625"> .sentinel = <span class="tok-number">0</span>,</span>
<span class="line" id="L1626"> .align_node = mods.align_node,</span>
<span class="line" id="L1627"> .addrspace_node = mods.addrspace_node,</span>
<span class="line" id="L1628"> .bit_range_start = mods.bit_range_start,</span>
<span class="line" id="L1629"> .bit_range_end = mods.bit_range_end,</span>
<span class="line" id="L1630"> }),</span>
<span class="line" id="L1631"> .rhs = elem_type,</span>
<span class="line" id="L1632"> },</span>
<span class="line" id="L1633"> });</span>
<span class="line" id="L1634"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (mods.addrspace_node != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1635"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1636"> .tag = .ptr_type,</span>
<span class="line" id="L1637"> .main_token = asterisk,</span>
<span class="line" id="L1638"> .data = .{</span>
<span class="line" id="L1639"> .lhs = <span class="tok-kw">try</span> p.addExtra(Node.PtrType{</span>
<span class="line" id="L1640"> .sentinel = <span class="tok-number">0</span>,</span>
<span class="line" id="L1641"> .align_node = mods.align_node,</span>
<span class="line" id="L1642"> .addrspace_node = mods.addrspace_node,</span>
<span class="line" id="L1643"> }),</span>
<span class="line" id="L1644"> .rhs = elem_type,</span>
<span class="line" id="L1645"> },</span>
<span class="line" id="L1646"> });</span>
<span class="line" id="L1647"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1648"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1649"> .tag = .ptr_type_aligned,</span>
<span class="line" id="L1650"> .main_token = asterisk,</span>
<span class="line" id="L1651"> .data = .{</span>
<span class="line" id="L1652"> .lhs = mods.align_node,</span>
<span class="line" id="L1653"> .rhs = elem_type,</span>
<span class="line" id="L1654"> },</span>
<span class="line" id="L1655"> });</span>
<span class="line" id="L1656"> }</span>
<span class="line" id="L1657"> },</span>
<span class="line" id="L1658"> .asterisk_asterisk => {</span>
<span class="line" id="L1659"> <span class="tok-kw">const</span> asterisk = p.nextToken();</span>
<span class="line" id="L1660"> <span class="tok-kw">const</span> mods = <span class="tok-kw">try</span> p.parsePtrModifiers();</span>
<span class="line" id="L1661"> <span class="tok-kw">const</span> elem_type = <span class="tok-kw">try</span> p.expectTypeExpr();</span>
<span class="line" id="L1662"> <span class="tok-kw">const</span> inner: Node.Index = inner: {</span>
<span class="line" id="L1663"> <span class="tok-kw">if</span> (mods.bit_range_start != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1664"> <span class="tok-kw">break</span> :inner <span class="tok-kw">try</span> p.addNode(.{</span>
<span class="line" id="L1665"> .tag = .ptr_type_bit_range,</span>
<span class="line" id="L1666"> .main_token = asterisk,</span>
<span class="line" id="L1667"> .data = .{</span>
<span class="line" id="L1668"> .lhs = <span class="tok-kw">try</span> p.addExtra(Node.PtrTypeBitRange{</span>
<span class="line" id="L1669"> .sentinel = <span class="tok-number">0</span>,</span>
<span class="line" id="L1670"> .align_node = mods.align_node,</span>
<span class="line" id="L1671"> .addrspace_node = mods.addrspace_node,</span>
<span class="line" id="L1672"> .bit_range_start = mods.bit_range_start,</span>
<span class="line" id="L1673"> .bit_range_end = mods.bit_range_end,</span>
<span class="line" id="L1674"> }),</span>
<span class="line" id="L1675"> .rhs = elem_type,</span>
<span class="line" id="L1676"> },</span>
<span class="line" id="L1677"> });</span>
<span class="line" id="L1678"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (mods.addrspace_node != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1679"> <span class="tok-kw">break</span> :inner <span class="tok-kw">try</span> p.addNode(.{</span>
<span class="line" id="L1680"> .tag = .ptr_type,</span>
<span class="line" id="L1681"> .main_token = asterisk,</span>
<span class="line" id="L1682"> .data = .{</span>
<span class="line" id="L1683"> .lhs = <span class="tok-kw">try</span> p.addExtra(Node.PtrType{</span>
<span class="line" id="L1684"> .sentinel = <span class="tok-number">0</span>,</span>
<span class="line" id="L1685"> .align_node = mods.align_node,</span>
<span class="line" id="L1686"> .addrspace_node = mods.addrspace_node,</span>
<span class="line" id="L1687"> }),</span>
<span class="line" id="L1688"> .rhs = elem_type,</span>
<span class="line" id="L1689"> },</span>
<span class="line" id="L1690"> });</span>
<span class="line" id="L1691"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1692"> <span class="tok-kw">break</span> :inner <span class="tok-kw">try</span> p.addNode(.{</span>
<span class="line" id="L1693"> .tag = .ptr_type_aligned,</span>
<span class="line" id="L1694"> .main_token = asterisk,</span>
<span class="line" id="L1695"> .data = .{</span>
<span class="line" id="L1696"> .lhs = mods.align_node,</span>
<span class="line" id="L1697"> .rhs = elem_type,</span>
<span class="line" id="L1698"> },</span>
<span class="line" id="L1699"> });</span>
<span class="line" id="L1700"> }</span>
<span class="line" id="L1701"> };</span>
<span class="line" id="L1702"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1703"> .tag = .ptr_type_aligned,</span>
<span class="line" id="L1704"> .main_token = asterisk,</span>
<span class="line" id="L1705"> .data = .{</span>
<span class="line" id="L1706"> .lhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L1707"> .rhs = inner,</span>
<span class="line" id="L1708"> },</span>
<span class="line" id="L1709"> });</span>
<span class="line" id="L1710"> },</span>
<span class="line" id="L1711"> .l_bracket => <span class="tok-kw">switch</span> (p.token_tags[p.tok_i + <span class="tok-number">1</span>]) {</span>
<span class="line" id="L1712"> .asterisk => {</span>
<span class="line" id="L1713"> _ = p.nextToken();</span>
<span class="line" id="L1714"> <span class="tok-kw">const</span> asterisk = p.nextToken();</span>
<span class="line" id="L1715"> <span class="tok-kw">var</span> sentinel: Node.Index = <span class="tok-number">0</span>;</span>
<span class="line" id="L1716"> <span class="tok-kw">if</span> (p.eatToken(.identifier)) |ident| {</span>
<span class="line" id="L1717"> <span class="tok-kw">const</span> ident_slice = p.source[p.token_starts[ident]..p.token_starts[ident + <span class="tok-number">1</span>]];</span>
<span class="line" id="L1718"> <span class="tok-kw">if</span> (!std.mem.eql(<span class="tok-type">u8</span>, std.mem.trimRight(<span class="tok-type">u8</span>, ident_slice, &std.ascii.whitespace), <span class="tok-str">"c"</span>)) {</span>
<span class="line" id="L1719"> p.tok_i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L1720"> }</span>
<span class="line" id="L1721"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (p.eatToken(.colon)) |_| {</span>
<span class="line" id="L1722"> sentinel = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L1723"> }</span>
<span class="line" id="L1724"> _ = <span class="tok-kw">try</span> p.expectToken(.r_bracket);</span>
<span class="line" id="L1725"> <span class="tok-kw">const</span> mods = <span class="tok-kw">try</span> p.parsePtrModifiers();</span>
<span class="line" id="L1726"> <span class="tok-kw">const</span> elem_type = <span class="tok-kw">try</span> p.expectTypeExpr();</span>
<span class="line" id="L1727"> <span class="tok-kw">if</span> (mods.bit_range_start == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1728"> <span class="tok-kw">if</span> (sentinel == <span class="tok-number">0</span> <span class="tok-kw">and</span> mods.addrspace_node == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1729"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1730"> .tag = .ptr_type_aligned,</span>
<span class="line" id="L1731"> .main_token = asterisk,</span>
<span class="line" id="L1732"> .data = .{</span>
<span class="line" id="L1733"> .lhs = mods.align_node,</span>
<span class="line" id="L1734"> .rhs = elem_type,</span>
<span class="line" id="L1735"> },</span>
<span class="line" id="L1736"> });</span>
<span class="line" id="L1737"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (mods.align_node == <span class="tok-number">0</span> <span class="tok-kw">and</span> mods.addrspace_node == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1738"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1739"> .tag = .ptr_type_sentinel,</span>
<span class="line" id="L1740"> .main_token = asterisk,</span>
<span class="line" id="L1741"> .data = .{</span>
<span class="line" id="L1742"> .lhs = sentinel,</span>
<span class="line" id="L1743"> .rhs = elem_type,</span>
<span class="line" id="L1744"> },</span>
<span class="line" id="L1745"> });</span>
<span class="line" id="L1746"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1747"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1748"> .tag = .ptr_type,</span>
<span class="line" id="L1749"> .main_token = asterisk,</span>
<span class="line" id="L1750"> .data = .{</span>
<span class="line" id="L1751"> .lhs = <span class="tok-kw">try</span> p.addExtra(Node.PtrType{</span>
<span class="line" id="L1752"> .sentinel = sentinel,</span>
<span class="line" id="L1753"> .align_node = mods.align_node,</span>
<span class="line" id="L1754"> .addrspace_node = mods.addrspace_node,</span>
<span class="line" id="L1755"> }),</span>
<span class="line" id="L1756"> .rhs = elem_type,</span>
<span class="line" id="L1757"> },</span>
<span class="line" id="L1758"> });</span>
<span class="line" id="L1759"> }</span>
<span class="line" id="L1760"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1761"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1762"> .tag = .ptr_type_bit_range,</span>
<span class="line" id="L1763"> .main_token = asterisk,</span>
<span class="line" id="L1764"> .data = .{</span>
<span class="line" id="L1765"> .lhs = <span class="tok-kw">try</span> p.addExtra(Node.PtrTypeBitRange{</span>
<span class="line" id="L1766"> .sentinel = sentinel,</span>
<span class="line" id="L1767"> .align_node = mods.align_node,</span>
<span class="line" id="L1768"> .addrspace_node = mods.addrspace_node,</span>
<span class="line" id="L1769"> .bit_range_start = mods.bit_range_start,</span>
<span class="line" id="L1770"> .bit_range_end = mods.bit_range_end,</span>
<span class="line" id="L1771"> }),</span>
<span class="line" id="L1772"> .rhs = elem_type,</span>
<span class="line" id="L1773"> },</span>
<span class="line" id="L1774"> });</span>
<span class="line" id="L1775"> }</span>
<span class="line" id="L1776"> },</span>
<span class="line" id="L1777"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1778"> <span class="tok-kw">const</span> lbracket = p.nextToken();</span>
<span class="line" id="L1779"> <span class="tok-kw">const</span> len_expr = <span class="tok-kw">try</span> p.parseExpr();</span>
<span class="line" id="L1780"> <span class="tok-kw">const</span> sentinel: Node.Index = <span class="tok-kw">if</span> (p.eatToken(.colon)) |_|</span>
<span class="line" id="L1781"> <span class="tok-kw">try</span> p.expectExpr()</span>
<span class="line" id="L1782"> <span class="tok-kw">else</span></span>
<span class="line" id="L1783"> <span class="tok-number">0</span>;</span>
<span class="line" id="L1784"> _ = <span class="tok-kw">try</span> p.expectToken(.r_bracket);</span>
<span class="line" id="L1785"> <span class="tok-kw">if</span> (len_expr == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1786"> <span class="tok-kw">const</span> mods = <span class="tok-kw">try</span> p.parsePtrModifiers();</span>
<span class="line" id="L1787"> <span class="tok-kw">const</span> elem_type = <span class="tok-kw">try</span> p.expectTypeExpr();</span>
<span class="line" id="L1788"> <span class="tok-kw">if</span> (mods.bit_range_start != <span class="tok-number">0</span>) {</span>
<span class="line" id="L1789"> <span class="tok-kw">try</span> p.warnMsg(.{</span>
<span class="line" id="L1790"> .tag = .invalid_bit_range,</span>
<span class="line" id="L1791"> .token = p.nodes.items(.main_token)[mods.bit_range_start],</span>
<span class="line" id="L1792"> });</span>
<span class="line" id="L1793"> }</span>
<span class="line" id="L1794"> <span class="tok-kw">if</span> (sentinel == <span class="tok-number">0</span> <span class="tok-kw">and</span> mods.addrspace_node == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1795"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1796"> .tag = .ptr_type_aligned,</span>
<span class="line" id="L1797"> .main_token = lbracket,</span>
<span class="line" id="L1798"> .data = .{</span>
<span class="line" id="L1799"> .lhs = mods.align_node,</span>
<span class="line" id="L1800"> .rhs = elem_type,</span>
<span class="line" id="L1801"> },</span>
<span class="line" id="L1802"> });</span>
<span class="line" id="L1803"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (mods.align_node == <span class="tok-number">0</span> <span class="tok-kw">and</span> mods.addrspace_node == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1804"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1805"> .tag = .ptr_type_sentinel,</span>
<span class="line" id="L1806"> .main_token = lbracket,</span>
<span class="line" id="L1807"> .data = .{</span>
<span class="line" id="L1808"> .lhs = sentinel,</span>
<span class="line" id="L1809"> .rhs = elem_type,</span>
<span class="line" id="L1810"> },</span>
<span class="line" id="L1811"> });</span>
<span class="line" id="L1812"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1813"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1814"> .tag = .ptr_type,</span>
<span class="line" id="L1815"> .main_token = lbracket,</span>
<span class="line" id="L1816"> .data = .{</span>
<span class="line" id="L1817"> .lhs = <span class="tok-kw">try</span> p.addExtra(Node.PtrType{</span>
<span class="line" id="L1818"> .sentinel = sentinel,</span>
<span class="line" id="L1819"> .align_node = mods.align_node,</span>
<span class="line" id="L1820"> .addrspace_node = mods.addrspace_node,</span>
<span class="line" id="L1821"> }),</span>
<span class="line" id="L1822"> .rhs = elem_type,</span>
<span class="line" id="L1823"> },</span>
<span class="line" id="L1824"> });</span>
<span class="line" id="L1825"> }</span>
<span class="line" id="L1826"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1827"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L1828"> .keyword_align,</span>
<span class="line" id="L1829"> .keyword_const,</span>
<span class="line" id="L1830"> .keyword_volatile,</span>
<span class="line" id="L1831"> .keyword_allowzero,</span>
<span class="line" id="L1832"> .keyword_addrspace,</span>
<span class="line" id="L1833"> => <span class="tok-kw">return</span> p.fail(.ptr_mod_on_array_child_type),</span>
<span class="line" id="L1834"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L1835"> }</span>
<span class="line" id="L1836"> <span class="tok-kw">const</span> elem_type = <span class="tok-kw">try</span> p.expectTypeExpr();</span>
<span class="line" id="L1837"> <span class="tok-kw">if</span> (sentinel == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1838"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1839"> .tag = .array_type,</span>
<span class="line" id="L1840"> .main_token = lbracket,</span>
<span class="line" id="L1841"> .data = .{</span>
<span class="line" id="L1842"> .lhs = len_expr,</span>
<span class="line" id="L1843"> .rhs = elem_type,</span>
<span class="line" id="L1844"> },</span>
<span class="line" id="L1845"> });</span>
<span class="line" id="L1846"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1847"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1848"> .tag = .array_type_sentinel,</span>
<span class="line" id="L1849"> .main_token = lbracket,</span>
<span class="line" id="L1850"> .data = .{</span>
<span class="line" id="L1851"> .lhs = len_expr,</span>
<span class="line" id="L1852"> .rhs = <span class="tok-kw">try</span> p.addExtra(.{</span>
<span class="line" id="L1853"> .elem_type = elem_type,</span>
<span class="line" id="L1854"> .sentinel = sentinel,</span>
<span class="line" id="L1855"> }),</span>
<span class="line" id="L1856"> },</span>
<span class="line" id="L1857"> });</span>
<span class="line" id="L1858"> }</span>
<span class="line" id="L1859"> }</span>
<span class="line" id="L1860"> },</span>
<span class="line" id="L1861"> },</span>
<span class="line" id="L1862"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> p.parseErrorUnionExpr(),</span>
<span class="line" id="L1863"> }</span>
<span class="line" id="L1864">}</span>
<span class="line" id="L1865"></span>
<span class="line" id="L1866"><span class="tok-kw">fn</span> <span class="tok-fn">expectTypeExpr</span>(p: *Parse) Error!Node.Index {</span>
<span class="line" id="L1867"> <span class="tok-kw">const</span> node = <span class="tok-kw">try</span> p.parseTypeExpr();</span>
<span class="line" id="L1868"> <span class="tok-kw">if</span> (node == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1869"> <span class="tok-kw">return</span> p.fail(.expected_type_expr);</span>
<span class="line" id="L1870"> }</span>
<span class="line" id="L1871"> <span class="tok-kw">return</span> node;</span>
<span class="line" id="L1872">}</span>
<span class="line" id="L1873"></span>
<span class="line" id="L1874"><span class="tok-comment">/// PrimaryExpr</span></span>
<span class="line" id="L1875"><span class="tok-comment">/// <- AsmExpr</span></span>
<span class="line" id="L1876"><span class="tok-comment">/// / IfExpr</span></span>
<span class="line" id="L1877"><span class="tok-comment">/// / KEYWORD_break BreakLabel? Expr?</span></span>
<span class="line" id="L1878"><span class="tok-comment">/// / KEYWORD_comptime Expr</span></span>
<span class="line" id="L1879"><span class="tok-comment">/// / KEYWORD_nosuspend Expr</span></span>
<span class="line" id="L1880"><span class="tok-comment">/// / KEYWORD_continue BreakLabel?</span></span>
<span class="line" id="L1881"><span class="tok-comment">/// / KEYWORD_resume Expr</span></span>
<span class="line" id="L1882"><span class="tok-comment">/// / KEYWORD_return Expr?</span></span>
<span class="line" id="L1883"><span class="tok-comment">/// / BlockLabel? LoopExpr</span></span>
<span class="line" id="L1884"><span class="tok-comment">/// / Block</span></span>
<span class="line" id="L1885"><span class="tok-comment">/// / CurlySuffixExpr</span></span>
<span class="line" id="L1886"><span class="tok-kw">fn</span> <span class="tok-fn">parsePrimaryExpr</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L1887"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L1888"> .keyword_asm => <span class="tok-kw">return</span> p.expectAsmExpr(),</span>
<span class="line" id="L1889"> .keyword_if => <span class="tok-kw">return</span> p.parseIfExpr(),</span>
<span class="line" id="L1890"> .keyword_break => {</span>
<span class="line" id="L1891"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L1892"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1893"> .tag = .@"break",</span>
<span class="line" id="L1894"> .main_token = p.tok_i - <span class="tok-number">1</span>,</span>
<span class="line" id="L1895"> .data = .{</span>
<span class="line" id="L1896"> .lhs = <span class="tok-kw">try</span> p.parseBreakLabel(),</span>
<span class="line" id="L1897"> .rhs = <span class="tok-kw">try</span> p.parseExpr(),</span>
<span class="line" id="L1898"> },</span>
<span class="line" id="L1899"> });</span>
<span class="line" id="L1900"> },</span>
<span class="line" id="L1901"> .keyword_continue => {</span>
<span class="line" id="L1902"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L1903"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1904"> .tag = .@"continue",</span>
<span class="line" id="L1905"> .main_token = p.tok_i - <span class="tok-number">1</span>,</span>
<span class="line" id="L1906"> .data = .{</span>
<span class="line" id="L1907"> .lhs = <span class="tok-kw">try</span> p.parseBreakLabel(),</span>
<span class="line" id="L1908"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1909"> },</span>
<span class="line" id="L1910"> });</span>
<span class="line" id="L1911"> },</span>
<span class="line" id="L1912"> .keyword_comptime => {</span>
<span class="line" id="L1913"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L1914"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1915"> .tag = .@"comptime",</span>
<span class="line" id="L1916"> .main_token = p.tok_i - <span class="tok-number">1</span>,</span>
<span class="line" id="L1917"> .data = .{</span>
<span class="line" id="L1918"> .lhs = <span class="tok-kw">try</span> p.expectExpr(),</span>
<span class="line" id="L1919"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1920"> },</span>
<span class="line" id="L1921"> });</span>
<span class="line" id="L1922"> },</span>
<span class="line" id="L1923"> .keyword_nosuspend => {</span>
<span class="line" id="L1924"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L1925"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1926"> .tag = .@"nosuspend",</span>
<span class="line" id="L1927"> .main_token = p.tok_i - <span class="tok-number">1</span>,</span>
<span class="line" id="L1928"> .data = .{</span>
<span class="line" id="L1929"> .lhs = <span class="tok-kw">try</span> p.expectExpr(),</span>
<span class="line" id="L1930"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1931"> },</span>
<span class="line" id="L1932"> });</span>
<span class="line" id="L1933"> },</span>
<span class="line" id="L1934"> .keyword_resume => {</span>
<span class="line" id="L1935"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L1936"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1937"> .tag = .@"resume",</span>
<span class="line" id="L1938"> .main_token = p.tok_i - <span class="tok-number">1</span>,</span>
<span class="line" id="L1939"> .data = .{</span>
<span class="line" id="L1940"> .lhs = <span class="tok-kw">try</span> p.expectExpr(),</span>
<span class="line" id="L1941"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1942"> },</span>
<span class="line" id="L1943"> });</span>
<span class="line" id="L1944"> },</span>
<span class="line" id="L1945"> .keyword_return => {</span>
<span class="line" id="L1946"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L1947"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L1948"> .tag = .@"return",</span>
<span class="line" id="L1949"> .main_token = p.tok_i - <span class="tok-number">1</span>,</span>
<span class="line" id="L1950"> .data = .{</span>
<span class="line" id="L1951"> .lhs = <span class="tok-kw">try</span> p.parseExpr(),</span>
<span class="line" id="L1952"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1953"> },</span>
<span class="line" id="L1954"> });</span>
<span class="line" id="L1955"> },</span>
<span class="line" id="L1956"> .identifier => {</span>
<span class="line" id="L1957"> <span class="tok-kw">if</span> (p.token_tags[p.tok_i + <span class="tok-number">1</span>] == .colon) {</span>
<span class="line" id="L1958"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i + <span class="tok-number">2</span>]) {</span>
<span class="line" id="L1959"> .keyword_inline => {</span>
<span class="line" id="L1960"> p.tok_i += <span class="tok-number">3</span>;</span>
<span class="line" id="L1961"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L1962"> .keyword_for => <span class="tok-kw">return</span> p.parseForExpr(),</span>
<span class="line" id="L1963"> .keyword_while => <span class="tok-kw">return</span> p.parseWhileExpr(),</span>
<span class="line" id="L1964"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> p.fail(.expected_inlinable),</span>
<span class="line" id="L1965"> }</span>
<span class="line" id="L1966"> },</span>
<span class="line" id="L1967"> .keyword_for => {</span>
<span class="line" id="L1968"> p.tok_i += <span class="tok-number">2</span>;</span>
<span class="line" id="L1969"> <span class="tok-kw">return</span> p.parseForExpr();</span>
<span class="line" id="L1970"> },</span>
<span class="line" id="L1971"> .keyword_while => {</span>
<span class="line" id="L1972"> p.tok_i += <span class="tok-number">2</span>;</span>
<span class="line" id="L1973"> <span class="tok-kw">return</span> p.parseWhileExpr();</span>
<span class="line" id="L1974"> },</span>
<span class="line" id="L1975"> .l_brace => {</span>
<span class="line" id="L1976"> p.tok_i += <span class="tok-number">2</span>;</span>
<span class="line" id="L1977"> <span class="tok-kw">return</span> p.parseBlock();</span>
<span class="line" id="L1978"> },</span>
<span class="line" id="L1979"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> p.parseCurlySuffixExpr(),</span>
<span class="line" id="L1980"> }</span>
<span class="line" id="L1981"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1982"> <span class="tok-kw">return</span> p.parseCurlySuffixExpr();</span>
<span class="line" id="L1983"> }</span>
<span class="line" id="L1984"> },</span>
<span class="line" id="L1985"> .keyword_inline => {</span>
<span class="line" id="L1986"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L1987"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L1988"> .keyword_for => <span class="tok-kw">return</span> p.parseForExpr(),</span>
<span class="line" id="L1989"> .keyword_while => <span class="tok-kw">return</span> p.parseWhileExpr(),</span>
<span class="line" id="L1990"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> p.fail(.expected_inlinable),</span>
<span class="line" id="L1991"> }</span>
<span class="line" id="L1992"> },</span>
<span class="line" id="L1993"> .keyword_for => <span class="tok-kw">return</span> p.parseForExpr(),</span>
<span class="line" id="L1994"> .keyword_while => <span class="tok-kw">return</span> p.parseWhileExpr(),</span>
<span class="line" id="L1995"> .l_brace => <span class="tok-kw">return</span> p.parseBlock(),</span>
<span class="line" id="L1996"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> p.parseCurlySuffixExpr(),</span>
<span class="line" id="L1997"> }</span>
<span class="line" id="L1998">}</span>
<span class="line" id="L1999"></span>
<span class="line" id="L2000"><span class="tok-comment">/// IfExpr <- IfPrefix Expr (KEYWORD_else Payload? Expr)?</span></span>
<span class="line" id="L2001"><span class="tok-kw">fn</span> <span class="tok-fn">parseIfExpr</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L2002"> <span class="tok-kw">return</span> p.parseIf(expectExpr);</span>
<span class="line" id="L2003">}</span>
<span class="line" id="L2004"></span>
<span class="line" id="L2005"><span class="tok-comment">/// Block <- LBRACE Statement* RBRACE</span></span>
<span class="line" id="L2006"><span class="tok-kw">fn</span> <span class="tok-fn">parseBlock</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L2007"> <span class="tok-kw">const</span> lbrace = p.eatToken(.l_brace) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L2008"> <span class="tok-kw">const</span> scratch_top = p.scratch.items.len;</span>
<span class="line" id="L2009"> <span class="tok-kw">defer</span> p.scratch.shrinkRetainingCapacity(scratch_top);</span>
<span class="line" id="L2010"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L2011"> <span class="tok-kw">if</span> (p.token_tags[p.tok_i] == .r_brace) <span class="tok-kw">break</span>;</span>
<span class="line" id="L2012"> <span class="tok-kw">const</span> statement = <span class="tok-kw">try</span> p.expectStatementRecoverable();</span>
<span class="line" id="L2013"> <span class="tok-kw">if</span> (statement == <span class="tok-number">0</span>) <span class="tok-kw">break</span>;</span>
<span class="line" id="L2014"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, statement);</span>
<span class="line" id="L2015"> }</span>
<span class="line" id="L2016"> _ = <span class="tok-kw">try</span> p.expectToken(.r_brace);</span>
<span class="line" id="L2017"> <span class="tok-kw">const</span> semicolon = (p.token_tags[p.tok_i - <span class="tok-number">2</span>] == .semicolon);</span>
<span class="line" id="L2018"> <span class="tok-kw">const</span> statements = p.scratch.items[scratch_top..];</span>
<span class="line" id="L2019"> <span class="tok-kw">switch</span> (statements.len) {</span>
<span class="line" id="L2020"> <span class="tok-number">0</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2021"> .tag = .block_two,</span>
<span class="line" id="L2022"> .main_token = lbrace,</span>
<span class="line" id="L2023"> .data = .{</span>
<span class="line" id="L2024"> .lhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L2025"> .rhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L2026"> },</span>
<span class="line" id="L2027"> }),</span>
<span class="line" id="L2028"> <span class="tok-number">1</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2029"> .tag = <span class="tok-kw">if</span> (semicolon) .block_two_semicolon <span class="tok-kw">else</span> .block_two,</span>
<span class="line" id="L2030"> .main_token = lbrace,</span>
<span class="line" id="L2031"> .data = .{</span>
<span class="line" id="L2032"> .lhs = statements[<span class="tok-number">0</span>],</span>
<span class="line" id="L2033"> .rhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L2034"> },</span>
<span class="line" id="L2035"> }),</span>
<span class="line" id="L2036"> <span class="tok-number">2</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2037"> .tag = <span class="tok-kw">if</span> (semicolon) .block_two_semicolon <span class="tok-kw">else</span> .block_two,</span>
<span class="line" id="L2038"> .main_token = lbrace,</span>
<span class="line" id="L2039"> .data = .{</span>
<span class="line" id="L2040"> .lhs = statements[<span class="tok-number">0</span>],</span>
<span class="line" id="L2041"> .rhs = statements[<span class="tok-number">1</span>],</span>
<span class="line" id="L2042"> },</span>
<span class="line" id="L2043"> }),</span>
<span class="line" id="L2044"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L2045"> <span class="tok-kw">const</span> span = <span class="tok-kw">try</span> p.listToSpan(statements);</span>
<span class="line" id="L2046"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2047"> .tag = <span class="tok-kw">if</span> (semicolon) .block_semicolon <span class="tok-kw">else</span> .block,</span>
<span class="line" id="L2048"> .main_token = lbrace,</span>
<span class="line" id="L2049"> .data = .{</span>
<span class="line" id="L2050"> .lhs = span.start,</span>
<span class="line" id="L2051"> .rhs = span.end,</span>
<span class="line" id="L2052"> },</span>
<span class="line" id="L2053"> });</span>
<span class="line" id="L2054"> },</span>
<span class="line" id="L2055"> }</span>
<span class="line" id="L2056">}</span>
<span class="line" id="L2057"></span>
<span class="line" id="L2058"><span class="tok-comment">/// ForExpr <- ForPrefix Expr (KEYWORD_else Expr)?</span></span>
<span class="line" id="L2059"><span class="tok-kw">fn</span> <span class="tok-fn">parseForExpr</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L2060"> <span class="tok-kw">const</span> for_token = p.eatToken(.keyword_for) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L2061"></span>
<span class="line" id="L2062"> <span class="tok-kw">const</span> scratch_top = p.scratch.items.len;</span>
<span class="line" id="L2063"> <span class="tok-kw">defer</span> p.scratch.shrinkRetainingCapacity(scratch_top);</span>
<span class="line" id="L2064"> <span class="tok-kw">const</span> inputs = <span class="tok-kw">try</span> p.forPrefix();</span>
<span class="line" id="L2065"></span>
<span class="line" id="L2066"> <span class="tok-kw">const</span> then_expr = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L2067"> <span class="tok-kw">var</span> has_else = <span class="tok-null">false</span>;</span>
<span class="line" id="L2068"> <span class="tok-kw">if</span> (p.eatToken(.keyword_else)) |_| {</span>
<span class="line" id="L2069"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, then_expr);</span>
<span class="line" id="L2070"> <span class="tok-kw">const</span> else_expr = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L2071"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, else_expr);</span>
<span class="line" id="L2072"> has_else = <span class="tok-null">true</span>;</span>
<span class="line" id="L2073"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (inputs == <span class="tok-number">1</span>) {</span>
<span class="line" id="L2074"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2075"> .tag = .for_simple,</span>
<span class="line" id="L2076"> .main_token = for_token,</span>
<span class="line" id="L2077"> .data = .{</span>
<span class="line" id="L2078"> .lhs = p.scratch.items[scratch_top],</span>
<span class="line" id="L2079"> .rhs = then_expr,</span>
<span class="line" id="L2080"> },</span>
<span class="line" id="L2081"> });</span>
<span class="line" id="L2082"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L2083"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, then_expr);</span>
<span class="line" id="L2084"> }</span>
<span class="line" id="L2085"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2086"> .tag = .@"for",</span>
<span class="line" id="L2087"> .main_token = for_token,</span>
<span class="line" id="L2088"> .data = .{</span>
<span class="line" id="L2089"> .lhs = (<span class="tok-kw">try</span> p.listToSpan(p.scratch.items[scratch_top..])).start,</span>
<span class="line" id="L2090"> .rhs = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@bitCast</span>(Node.For{</span>
<span class="line" id="L2091"> .inputs = <span class="tok-builtin">@as</span>(<span class="tok-type">u31</span>, <span class="tok-builtin">@intCast</span>(inputs)),</span>
<span class="line" id="L2092"> .has_else = has_else,</span>
<span class="line" id="L2093"> })),</span>
<span class="line" id="L2094"> },</span>
<span class="line" id="L2095"> });</span>
<span class="line" id="L2096">}</span>
<span class="line" id="L2097"></span>
<span class="line" id="L2098"><span class="tok-comment">/// ForPrefix <- KEYWORD_for LPAREN ForInput (COMMA ForInput)* COMMA? RPAREN ForPayload</span></span>
<span class="line" id="L2099"><span class="tok-comment">///</span></span>
<span class="line" id="L2100"><span class="tok-comment">/// ForInput <- Expr (DOT2 Expr?)?</span></span>
<span class="line" id="L2101"><span class="tok-comment">///</span></span>
<span class="line" id="L2102"><span class="tok-comment">/// ForPayload <- PIPE ASTERISK? IDENTIFIER (COMMA ASTERISK? IDENTIFIER)* PIPE</span></span>
<span class="line" id="L2103"><span class="tok-kw">fn</span> <span class="tok-fn">forPrefix</span>(p: *Parse) Error!<span class="tok-type">usize</span> {</span>
<span class="line" id="L2104"> <span class="tok-kw">const</span> start = p.scratch.items.len;</span>
<span class="line" id="L2105"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L2106"></span>
<span class="line" id="L2107"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L2108"> <span class="tok-kw">var</span> input = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L2109"> <span class="tok-kw">if</span> (p.eatToken(.ellipsis2)) |ellipsis| {</span>
<span class="line" id="L2110"> input = <span class="tok-kw">try</span> p.addNode(.{</span>
<span class="line" id="L2111"> .tag = .for_range,</span>
<span class="line" id="L2112"> .main_token = ellipsis,</span>
<span class="line" id="L2113"> .data = .{</span>
<span class="line" id="L2114"> .lhs = input,</span>
<span class="line" id="L2115"> .rhs = <span class="tok-kw">try</span> p.parseExpr(),</span>
<span class="line" id="L2116"> },</span>
<span class="line" id="L2117"> });</span>
<span class="line" id="L2118"> }</span>
<span class="line" id="L2119"></span>
<span class="line" id="L2120"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, input);</span>
<span class="line" id="L2121"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L2122"> .comma => p.tok_i += <span class="tok-number">1</span>,</span>
<span class="line" id="L2123"> .r_paren => {</span>
<span class="line" id="L2124"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2125"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L2126"> },</span>
<span class="line" id="L2127"> .colon, .r_brace, .r_bracket => <span class="tok-kw">return</span> p.failExpected(.r_paren),</span>
<span class="line" id="L2128"> <span class="tok-comment">// Likely just a missing comma; give error but continue parsing.</span>
</span>
<span class="line" id="L2129"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> p.warn(.expected_comma_after_for_operand),</span>
<span class="line" id="L2130"> }</span>
<span class="line" id="L2131"> <span class="tok-kw">if</span> (p.eatToken(.r_paren)) |_| <span class="tok-kw">break</span>;</span>
<span class="line" id="L2132"> }</span>
<span class="line" id="L2133"> <span class="tok-kw">const</span> inputs = p.scratch.items.len - start;</span>
<span class="line" id="L2134"></span>
<span class="line" id="L2135"> _ = p.eatToken(.pipe) <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L2136"> <span class="tok-kw">try</span> p.warn(.expected_loop_payload);</span>
<span class="line" id="L2137"> <span class="tok-kw">return</span> inputs;</span>
<span class="line" id="L2138"> };</span>
<span class="line" id="L2139"></span>
<span class="line" id="L2140"> <span class="tok-kw">var</span> warned_excess = <span class="tok-null">false</span>;</span>
<span class="line" id="L2141"> <span class="tok-kw">var</span> captures: <span class="tok-type">u32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L2142"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L2143"> _ = p.eatToken(.asterisk);</span>
<span class="line" id="L2144"> <span class="tok-kw">const</span> identifier = <span class="tok-kw">try</span> p.expectToken(.identifier);</span>
<span class="line" id="L2145"> captures += <span class="tok-number">1</span>;</span>
<span class="line" id="L2146"> <span class="tok-kw">if</span> (!warned_excess <span class="tok-kw">and</span> inputs == <span class="tok-number">1</span> <span class="tok-kw">and</span> captures == <span class="tok-number">2</span>) {</span>
<span class="line" id="L2147"> <span class="tok-comment">// TODO remove the above condition after 0.11.0 release. this silences</span>
</span>
<span class="line" id="L2148"> <span class="tok-comment">// the error so that zig fmt can fix it.</span>
</span>
<span class="line" id="L2149"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (captures > inputs <span class="tok-kw">and</span> !warned_excess) {</span>
<span class="line" id="L2150"> <span class="tok-kw">try</span> p.warnMsg(.{ .tag = .extra_for_capture, .token = identifier });</span>
<span class="line" id="L2151"> warned_excess = <span class="tok-null">true</span>;</span>
<span class="line" id="L2152"> }</span>
<span class="line" id="L2153"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L2154"> .comma => p.tok_i += <span class="tok-number">1</span>,</span>
<span class="line" id="L2155"> .pipe => {</span>
<span class="line" id="L2156"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2157"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L2158"> },</span>
<span class="line" id="L2159"> <span class="tok-comment">// Likely just a missing comma; give error but continue parsing.</span>
</span>
<span class="line" id="L2160"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> p.warn(.expected_comma_after_capture),</span>
<span class="line" id="L2161"> }</span>
<span class="line" id="L2162"> <span class="tok-kw">if</span> (p.eatToken(.pipe)) |_| <span class="tok-kw">break</span>;</span>
<span class="line" id="L2163"> }</span>
<span class="line" id="L2164"></span>
<span class="line" id="L2165"> <span class="tok-kw">if</span> (captures < inputs) {</span>
<span class="line" id="L2166"> <span class="tok-kw">const</span> index = p.scratch.items.len - captures;</span>
<span class="line" id="L2167"> <span class="tok-kw">const</span> input = p.nodes.items(.main_token)[p.scratch.items[index]];</span>
<span class="line" id="L2168"> <span class="tok-kw">try</span> p.warnMsg(.{ .tag = .for_input_not_captured, .token = input });</span>
<span class="line" id="L2169"> }</span>
<span class="line" id="L2170"> <span class="tok-kw">return</span> inputs;</span>
<span class="line" id="L2171">}</span>
<span class="line" id="L2172"></span>
<span class="line" id="L2173"><span class="tok-comment">/// WhilePrefix <- KEYWORD_while LPAREN Expr RPAREN PtrPayload? WhileContinueExpr?</span></span>
<span class="line" id="L2174"><span class="tok-comment">///</span></span>
<span class="line" id="L2175"><span class="tok-comment">/// WhileExpr <- WhilePrefix Expr (KEYWORD_else Payload? Expr)?</span></span>
<span class="line" id="L2176"><span class="tok-kw">fn</span> <span class="tok-fn">parseWhileExpr</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L2177"> <span class="tok-kw">const</span> while_token = p.eatToken(.keyword_while) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L2178"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L2179"> <span class="tok-kw">const</span> condition = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L2180"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L2181"> _ = <span class="tok-kw">try</span> p.parsePtrPayload();</span>
<span class="line" id="L2182"> <span class="tok-kw">const</span> cont_expr = <span class="tok-kw">try</span> p.parseWhileContinueExpr();</span>
<span class="line" id="L2183"></span>
<span class="line" id="L2184"> <span class="tok-kw">const</span> then_expr = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L2185"> _ = p.eatToken(.keyword_else) <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L2186"> <span class="tok-kw">if</span> (cont_expr == <span class="tok-number">0</span>) {</span>
<span class="line" id="L2187"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2188"> .tag = .while_simple,</span>
<span class="line" id="L2189"> .main_token = while_token,</span>
<span class="line" id="L2190"> .data = .{</span>
<span class="line" id="L2191"> .lhs = condition,</span>
<span class="line" id="L2192"> .rhs = then_expr,</span>
<span class="line" id="L2193"> },</span>
<span class="line" id="L2194"> });</span>
<span class="line" id="L2195"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L2196"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2197"> .tag = .while_cont,</span>
<span class="line" id="L2198"> .main_token = while_token,</span>
<span class="line" id="L2199"> .data = .{</span>
<span class="line" id="L2200"> .lhs = condition,</span>
<span class="line" id="L2201"> .rhs = <span class="tok-kw">try</span> p.addExtra(Node.WhileCont{</span>
<span class="line" id="L2202"> .cont_expr = cont_expr,</span>
<span class="line" id="L2203"> .then_expr = then_expr,</span>
<span class="line" id="L2204"> }),</span>
<span class="line" id="L2205"> },</span>
<span class="line" id="L2206"> });</span>
<span class="line" id="L2207"> }</span>
<span class="line" id="L2208"> };</span>
<span class="line" id="L2209"> _ = <span class="tok-kw">try</span> p.parsePayload();</span>
<span class="line" id="L2210"> <span class="tok-kw">const</span> else_expr = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L2211"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2212"> .tag = .@"while",</span>
<span class="line" id="L2213"> .main_token = while_token,</span>
<span class="line" id="L2214"> .data = .{</span>
<span class="line" id="L2215"> .lhs = condition,</span>
<span class="line" id="L2216"> .rhs = <span class="tok-kw">try</span> p.addExtra(Node.While{</span>
<span class="line" id="L2217"> .cont_expr = cont_expr,</span>
<span class="line" id="L2218"> .then_expr = then_expr,</span>
<span class="line" id="L2219"> .else_expr = else_expr,</span>
<span class="line" id="L2220"> }),</span>
<span class="line" id="L2221"> },</span>
<span class="line" id="L2222"> });</span>
<span class="line" id="L2223">}</span>
<span class="line" id="L2224"></span>
<span class="line" id="L2225"><span class="tok-comment">/// CurlySuffixExpr <- TypeExpr InitList?</span></span>
<span class="line" id="L2226"><span class="tok-comment">///</span></span>
<span class="line" id="L2227"><span class="tok-comment">/// InitList</span></span>
<span class="line" id="L2228"><span class="tok-comment">/// <- LBRACE FieldInit (COMMA FieldInit)* COMMA? RBRACE</span></span>
<span class="line" id="L2229"><span class="tok-comment">/// / LBRACE Expr (COMMA Expr)* COMMA? RBRACE</span></span>
<span class="line" id="L2230"><span class="tok-comment">/// / LBRACE RBRACE</span></span>
<span class="line" id="L2231"><span class="tok-kw">fn</span> <span class="tok-fn">parseCurlySuffixExpr</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L2232"> <span class="tok-kw">const</span> lhs = <span class="tok-kw">try</span> p.parseTypeExpr();</span>
<span class="line" id="L2233"> <span class="tok-kw">if</span> (lhs == <span class="tok-number">0</span>) <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L2234"> <span class="tok-kw">const</span> lbrace = p.eatToken(.l_brace) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> lhs;</span>
<span class="line" id="L2235"></span>
<span class="line" id="L2236"> <span class="tok-comment">// If there are 0 or 1 items, we can use ArrayInitOne/StructInitOne;</span>
</span>
<span class="line" id="L2237"> <span class="tok-comment">// otherwise we use the full ArrayInit/StructInit.</span>
</span>
<span class="line" id="L2238"></span>
<span class="line" id="L2239"> <span class="tok-kw">const</span> scratch_top = p.scratch.items.len;</span>
<span class="line" id="L2240"> <span class="tok-kw">defer</span> p.scratch.shrinkRetainingCapacity(scratch_top);</span>
<span class="line" id="L2241"> <span class="tok-kw">const</span> field_init = <span class="tok-kw">try</span> p.parseFieldInit();</span>
<span class="line" id="L2242"> <span class="tok-kw">if</span> (field_init != <span class="tok-number">0</span>) {</span>
<span class="line" id="L2243"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, field_init);</span>
<span class="line" id="L2244"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L2245"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L2246"> .comma => p.tok_i += <span class="tok-number">1</span>,</span>
<span class="line" id="L2247"> .r_brace => {</span>
<span class="line" id="L2248"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2249"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L2250"> },</span>
<span class="line" id="L2251"> .colon, .r_paren, .r_bracket => <span class="tok-kw">return</span> p.failExpected(.r_brace),</span>
<span class="line" id="L2252"> <span class="tok-comment">// Likely just a missing comma; give error but continue parsing.</span>
</span>
<span class="line" id="L2253"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> p.warn(.expected_comma_after_initializer),</span>
<span class="line" id="L2254"> }</span>
<span class="line" id="L2255"> <span class="tok-kw">if</span> (p.eatToken(.r_brace)) |_| <span class="tok-kw">break</span>;</span>
<span class="line" id="L2256"> <span class="tok-kw">const</span> next = <span class="tok-kw">try</span> p.expectFieldInit();</span>
<span class="line" id="L2257"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, next);</span>
<span class="line" id="L2258"> }</span>
<span class="line" id="L2259"> <span class="tok-kw">const</span> comma = (p.token_tags[p.tok_i - <span class="tok-number">2</span>] == .comma);</span>
<span class="line" id="L2260"> <span class="tok-kw">const</span> inits = p.scratch.items[scratch_top..];</span>
<span class="line" id="L2261"> <span class="tok-kw">switch</span> (inits.len) {</span>
<span class="line" id="L2262"> <span class="tok-number">0</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L2263"> <span class="tok-number">1</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2264"> .tag = <span class="tok-kw">if</span> (comma) .struct_init_one_comma <span class="tok-kw">else</span> .struct_init_one,</span>
<span class="line" id="L2265"> .main_token = lbrace,</span>
<span class="line" id="L2266"> .data = .{</span>
<span class="line" id="L2267"> .lhs = lhs,</span>
<span class="line" id="L2268"> .rhs = inits[<span class="tok-number">0</span>],</span>
<span class="line" id="L2269"> },</span>
<span class="line" id="L2270"> }),</span>
<span class="line" id="L2271"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2272"> .tag = <span class="tok-kw">if</span> (comma) .struct_init_comma <span class="tok-kw">else</span> .struct_init,</span>
<span class="line" id="L2273"> .main_token = lbrace,</span>
<span class="line" id="L2274"> .data = .{</span>
<span class="line" id="L2275"> .lhs = lhs,</span>
<span class="line" id="L2276"> .rhs = <span class="tok-kw">try</span> p.addExtra(<span class="tok-kw">try</span> p.listToSpan(inits)),</span>
<span class="line" id="L2277"> },</span>
<span class="line" id="L2278"> }),</span>
<span class="line" id="L2279"> }</span>
<span class="line" id="L2280"> }</span>
<span class="line" id="L2281"></span>
<span class="line" id="L2282"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L2283"> <span class="tok-kw">if</span> (p.eatToken(.r_brace)) |_| <span class="tok-kw">break</span>;</span>
<span class="line" id="L2284"> <span class="tok-kw">const</span> elem_init = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L2285"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, elem_init);</span>
<span class="line" id="L2286"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L2287"> .comma => p.tok_i += <span class="tok-number">1</span>,</span>
<span class="line" id="L2288"> .r_brace => {</span>
<span class="line" id="L2289"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2290"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L2291"> },</span>
<span class="line" id="L2292"> .colon, .r_paren, .r_bracket => <span class="tok-kw">return</span> p.failExpected(.r_brace),</span>
<span class="line" id="L2293"> <span class="tok-comment">// Likely just a missing comma; give error but continue parsing.</span>
</span>
<span class="line" id="L2294"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> p.warn(.expected_comma_after_initializer),</span>
<span class="line" id="L2295"> }</span>
<span class="line" id="L2296"> }</span>
<span class="line" id="L2297"> <span class="tok-kw">const</span> comma = (p.token_tags[p.tok_i - <span class="tok-number">2</span>] == .comma);</span>
<span class="line" id="L2298"> <span class="tok-kw">const</span> inits = p.scratch.items[scratch_top..];</span>
<span class="line" id="L2299"> <span class="tok-kw">switch</span> (inits.len) {</span>
<span class="line" id="L2300"> <span class="tok-number">0</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2301"> .tag = .struct_init_one,</span>
<span class="line" id="L2302"> .main_token = lbrace,</span>
<span class="line" id="L2303"> .data = .{</span>
<span class="line" id="L2304"> .lhs = lhs,</span>
<span class="line" id="L2305"> .rhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L2306"> },</span>
<span class="line" id="L2307"> }),</span>
<span class="line" id="L2308"> <span class="tok-number">1</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2309"> .tag = <span class="tok-kw">if</span> (comma) .array_init_one_comma <span class="tok-kw">else</span> .array_init_one,</span>
<span class="line" id="L2310"> .main_token = lbrace,</span>
<span class="line" id="L2311"> .data = .{</span>
<span class="line" id="L2312"> .lhs = lhs,</span>
<span class="line" id="L2313"> .rhs = inits[<span class="tok-number">0</span>],</span>
<span class="line" id="L2314"> },</span>
<span class="line" id="L2315"> }),</span>
<span class="line" id="L2316"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2317"> .tag = <span class="tok-kw">if</span> (comma) .array_init_comma <span class="tok-kw">else</span> .array_init,</span>
<span class="line" id="L2318"> .main_token = lbrace,</span>
<span class="line" id="L2319"> .data = .{</span>
<span class="line" id="L2320"> .lhs = lhs,</span>
<span class="line" id="L2321"> .rhs = <span class="tok-kw">try</span> p.addExtra(<span class="tok-kw">try</span> p.listToSpan(inits)),</span>
<span class="line" id="L2322"> },</span>
<span class="line" id="L2323"> }),</span>
<span class="line" id="L2324"> }</span>
<span class="line" id="L2325">}</span>
<span class="line" id="L2326"></span>
<span class="line" id="L2327"><span class="tok-comment">/// ErrorUnionExpr <- SuffixExpr (EXCLAMATIONMARK TypeExpr)?</span></span>
<span class="line" id="L2328"><span class="tok-kw">fn</span> <span class="tok-fn">parseErrorUnionExpr</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L2329"> <span class="tok-kw">const</span> suffix_expr = <span class="tok-kw">try</span> p.parseSuffixExpr();</span>
<span class="line" id="L2330"> <span class="tok-kw">if</span> (suffix_expr == <span class="tok-number">0</span>) <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L2331"> <span class="tok-kw">const</span> bang = p.eatToken(.bang) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> suffix_expr;</span>
<span class="line" id="L2332"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2333"> .tag = .error_union,</span>
<span class="line" id="L2334"> .main_token = bang,</span>
<span class="line" id="L2335"> .data = .{</span>
<span class="line" id="L2336"> .lhs = suffix_expr,</span>
<span class="line" id="L2337"> .rhs = <span class="tok-kw">try</span> p.expectTypeExpr(),</span>
<span class="line" id="L2338"> },</span>
<span class="line" id="L2339"> });</span>
<span class="line" id="L2340">}</span>
<span class="line" id="L2341"></span>
<span class="line" id="L2342"><span class="tok-comment">/// SuffixExpr</span></span>
<span class="line" id="L2343"><span class="tok-comment">/// <- KEYWORD_async PrimaryTypeExpr SuffixOp* FnCallArguments</span></span>
<span class="line" id="L2344"><span class="tok-comment">/// / PrimaryTypeExpr (SuffixOp / FnCallArguments)*</span></span>
<span class="line" id="L2345"><span class="tok-comment">///</span></span>
<span class="line" id="L2346"><span class="tok-comment">/// FnCallArguments <- LPAREN ExprList RPAREN</span></span>
<span class="line" id="L2347"><span class="tok-comment">///</span></span>
<span class="line" id="L2348"><span class="tok-comment">/// ExprList <- (Expr COMMA)* Expr?</span></span>
<span class="line" id="L2349"><span class="tok-kw">fn</span> <span class="tok-fn">parseSuffixExpr</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L2350"> <span class="tok-kw">if</span> (p.eatToken(.keyword_async)) |_| {</span>
<span class="line" id="L2351"> <span class="tok-kw">var</span> res = <span class="tok-kw">try</span> p.expectPrimaryTypeExpr();</span>
<span class="line" id="L2352"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L2353"> <span class="tok-kw">const</span> node = <span class="tok-kw">try</span> p.parseSuffixOp(res);</span>
<span class="line" id="L2354"> <span class="tok-kw">if</span> (node == <span class="tok-number">0</span>) <span class="tok-kw">break</span>;</span>
<span class="line" id="L2355"> res = node;</span>
<span class="line" id="L2356"> }</span>
<span class="line" id="L2357"> <span class="tok-kw">const</span> lparen = p.eatToken(.l_paren) <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L2358"> <span class="tok-kw">try</span> p.warn(.expected_param_list);</span>
<span class="line" id="L2359"> <span class="tok-kw">return</span> res;</span>
<span class="line" id="L2360"> };</span>
<span class="line" id="L2361"> <span class="tok-kw">const</span> scratch_top = p.scratch.items.len;</span>
<span class="line" id="L2362"> <span class="tok-kw">defer</span> p.scratch.shrinkRetainingCapacity(scratch_top);</span>
<span class="line" id="L2363"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L2364"> <span class="tok-kw">if</span> (p.eatToken(.r_paren)) |_| <span class="tok-kw">break</span>;</span>
<span class="line" id="L2365"> <span class="tok-kw">const</span> param = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L2366"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, param);</span>
<span class="line" id="L2367"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L2368"> .comma => p.tok_i += <span class="tok-number">1</span>,</span>
<span class="line" id="L2369"> .r_paren => {</span>
<span class="line" id="L2370"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2371"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L2372"> },</span>
<span class="line" id="L2373"> .colon, .r_brace, .r_bracket => <span class="tok-kw">return</span> p.failExpected(.r_paren),</span>
<span class="line" id="L2374"> <span class="tok-comment">// Likely just a missing comma; give error but continue parsing.</span>
</span>
<span class="line" id="L2375"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> p.warn(.expected_comma_after_arg),</span>
<span class="line" id="L2376"> }</span>
<span class="line" id="L2377"> }</span>
<span class="line" id="L2378"> <span class="tok-kw">const</span> comma = (p.token_tags[p.tok_i - <span class="tok-number">2</span>] == .comma);</span>
<span class="line" id="L2379"> <span class="tok-kw">const</span> params = p.scratch.items[scratch_top..];</span>
<span class="line" id="L2380"> <span class="tok-kw">switch</span> (params.len) {</span>
<span class="line" id="L2381"> <span class="tok-number">0</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2382"> .tag = <span class="tok-kw">if</span> (comma) .async_call_one_comma <span class="tok-kw">else</span> .async_call_one,</span>
<span class="line" id="L2383"> .main_token = lparen,</span>
<span class="line" id="L2384"> .data = .{</span>
<span class="line" id="L2385"> .lhs = res,</span>
<span class="line" id="L2386"> .rhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L2387"> },</span>
<span class="line" id="L2388"> }),</span>
<span class="line" id="L2389"> <span class="tok-number">1</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2390"> .tag = <span class="tok-kw">if</span> (comma) .async_call_one_comma <span class="tok-kw">else</span> .async_call_one,</span>
<span class="line" id="L2391"> .main_token = lparen,</span>
<span class="line" id="L2392"> .data = .{</span>
<span class="line" id="L2393"> .lhs = res,</span>
<span class="line" id="L2394"> .rhs = params[<span class="tok-number">0</span>],</span>
<span class="line" id="L2395"> },</span>
<span class="line" id="L2396"> }),</span>
<span class="line" id="L2397"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2398"> .tag = <span class="tok-kw">if</span> (comma) .async_call_comma <span class="tok-kw">else</span> .async_call,</span>
<span class="line" id="L2399"> .main_token = lparen,</span>
<span class="line" id="L2400"> .data = .{</span>
<span class="line" id="L2401"> .lhs = res,</span>
<span class="line" id="L2402"> .rhs = <span class="tok-kw">try</span> p.addExtra(<span class="tok-kw">try</span> p.listToSpan(params)),</span>
<span class="line" id="L2403"> },</span>
<span class="line" id="L2404"> }),</span>
<span class="line" id="L2405"> }</span>
<span class="line" id="L2406"> }</span>
<span class="line" id="L2407"></span>
<span class="line" id="L2408"> <span class="tok-kw">var</span> res = <span class="tok-kw">try</span> p.parsePrimaryTypeExpr();</span>
<span class="line" id="L2409"> <span class="tok-kw">if</span> (res == <span class="tok-number">0</span>) <span class="tok-kw">return</span> res;</span>
<span class="line" id="L2410"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L2411"> <span class="tok-kw">const</span> suffix_op = <span class="tok-kw">try</span> p.parseSuffixOp(res);</span>
<span class="line" id="L2412"> <span class="tok-kw">if</span> (suffix_op != <span class="tok-number">0</span>) {</span>
<span class="line" id="L2413"> res = suffix_op;</span>
<span class="line" id="L2414"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L2415"> }</span>
<span class="line" id="L2416"> <span class="tok-kw">const</span> lparen = p.eatToken(.l_paren) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> res;</span>
<span class="line" id="L2417"> <span class="tok-kw">const</span> scratch_top = p.scratch.items.len;</span>
<span class="line" id="L2418"> <span class="tok-kw">defer</span> p.scratch.shrinkRetainingCapacity(scratch_top);</span>
<span class="line" id="L2419"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L2420"> <span class="tok-kw">if</span> (p.eatToken(.r_paren)) |_| <span class="tok-kw">break</span>;</span>
<span class="line" id="L2421"> <span class="tok-kw">const</span> param = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L2422"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, param);</span>
<span class="line" id="L2423"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L2424"> .comma => p.tok_i += <span class="tok-number">1</span>,</span>
<span class="line" id="L2425"> .r_paren => {</span>
<span class="line" id="L2426"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2427"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L2428"> },</span>
<span class="line" id="L2429"> .colon, .r_brace, .r_bracket => <span class="tok-kw">return</span> p.failExpected(.r_paren),</span>
<span class="line" id="L2430"> <span class="tok-comment">// Likely just a missing comma; give error but continue parsing.</span>
</span>
<span class="line" id="L2431"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> p.warn(.expected_comma_after_arg),</span>
<span class="line" id="L2432"> }</span>
<span class="line" id="L2433"> }</span>
<span class="line" id="L2434"> <span class="tok-kw">const</span> comma = (p.token_tags[p.tok_i - <span class="tok-number">2</span>] == .comma);</span>
<span class="line" id="L2435"> <span class="tok-kw">const</span> params = p.scratch.items[scratch_top..];</span>
<span class="line" id="L2436"> res = <span class="tok-kw">switch</span> (params.len) {</span>
<span class="line" id="L2437"> <span class="tok-number">0</span> => <span class="tok-kw">try</span> p.addNode(.{</span>
<span class="line" id="L2438"> .tag = <span class="tok-kw">if</span> (comma) .call_one_comma <span class="tok-kw">else</span> .call_one,</span>
<span class="line" id="L2439"> .main_token = lparen,</span>
<span class="line" id="L2440"> .data = .{</span>
<span class="line" id="L2441"> .lhs = res,</span>
<span class="line" id="L2442"> .rhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L2443"> },</span>
<span class="line" id="L2444"> }),</span>
<span class="line" id="L2445"> <span class="tok-number">1</span> => <span class="tok-kw">try</span> p.addNode(.{</span>
<span class="line" id="L2446"> .tag = <span class="tok-kw">if</span> (comma) .call_one_comma <span class="tok-kw">else</span> .call_one,</span>
<span class="line" id="L2447"> .main_token = lparen,</span>
<span class="line" id="L2448"> .data = .{</span>
<span class="line" id="L2449"> .lhs = res,</span>
<span class="line" id="L2450"> .rhs = params[<span class="tok-number">0</span>],</span>
<span class="line" id="L2451"> },</span>
<span class="line" id="L2452"> }),</span>
<span class="line" id="L2453"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> p.addNode(.{</span>
<span class="line" id="L2454"> .tag = <span class="tok-kw">if</span> (comma) .call_comma <span class="tok-kw">else</span> .call,</span>
<span class="line" id="L2455"> .main_token = lparen,</span>
<span class="line" id="L2456"> .data = .{</span>
<span class="line" id="L2457"> .lhs = res,</span>
<span class="line" id="L2458"> .rhs = <span class="tok-kw">try</span> p.addExtra(<span class="tok-kw">try</span> p.listToSpan(params)),</span>
<span class="line" id="L2459"> },</span>
<span class="line" id="L2460"> }),</span>
<span class="line" id="L2461"> };</span>
<span class="line" id="L2462"> }</span>
<span class="line" id="L2463">}</span>
<span class="line" id="L2464"></span>
<span class="line" id="L2465"><span class="tok-comment">/// PrimaryTypeExpr</span></span>
<span class="line" id="L2466"><span class="tok-comment">/// <- BUILTINIDENTIFIER FnCallArguments</span></span>
<span class="line" id="L2467"><span class="tok-comment">/// / CHAR_LITERAL</span></span>
<span class="line" id="L2468"><span class="tok-comment">/// / ContainerDecl</span></span>
<span class="line" id="L2469"><span class="tok-comment">/// / DOT IDENTIFIER</span></span>
<span class="line" id="L2470"><span class="tok-comment">/// / DOT InitList</span></span>
<span class="line" id="L2471"><span class="tok-comment">/// / ErrorSetDecl</span></span>
<span class="line" id="L2472"><span class="tok-comment">/// / FLOAT</span></span>
<span class="line" id="L2473"><span class="tok-comment">/// / FnProto</span></span>
<span class="line" id="L2474"><span class="tok-comment">/// / GroupedExpr</span></span>
<span class="line" id="L2475"><span class="tok-comment">/// / LabeledTypeExpr</span></span>
<span class="line" id="L2476"><span class="tok-comment">/// / IDENTIFIER</span></span>
<span class="line" id="L2477"><span class="tok-comment">/// / IfTypeExpr</span></span>
<span class="line" id="L2478"><span class="tok-comment">/// / INTEGER</span></span>
<span class="line" id="L2479"><span class="tok-comment">/// / KEYWORD_comptime TypeExpr</span></span>
<span class="line" id="L2480"><span class="tok-comment">/// / KEYWORD_error DOT IDENTIFIER</span></span>
<span class="line" id="L2481"><span class="tok-comment">/// / KEYWORD_anyframe</span></span>
<span class="line" id="L2482"><span class="tok-comment">/// / KEYWORD_unreachable</span></span>
<span class="line" id="L2483"><span class="tok-comment">/// / STRINGLITERAL</span></span>
<span class="line" id="L2484"><span class="tok-comment">/// / SwitchExpr</span></span>
<span class="line" id="L2485"><span class="tok-comment">///</span></span>
<span class="line" id="L2486"><span class="tok-comment">/// ContainerDecl <- (KEYWORD_extern / KEYWORD_packed)? ContainerDeclAuto</span></span>
<span class="line" id="L2487"><span class="tok-comment">///</span></span>
<span class="line" id="L2488"><span class="tok-comment">/// ContainerDeclAuto <- ContainerDeclType LBRACE container_doc_comment? ContainerMembers RBRACE</span></span>
<span class="line" id="L2489"><span class="tok-comment">///</span></span>
<span class="line" id="L2490"><span class="tok-comment">/// InitList</span></span>
<span class="line" id="L2491"><span class="tok-comment">/// <- LBRACE FieldInit (COMMA FieldInit)* COMMA? RBRACE</span></span>
<span class="line" id="L2492"><span class="tok-comment">/// / LBRACE Expr (COMMA Expr)* COMMA? RBRACE</span></span>
<span class="line" id="L2493"><span class="tok-comment">/// / LBRACE RBRACE</span></span>
<span class="line" id="L2494"><span class="tok-comment">///</span></span>
<span class="line" id="L2495"><span class="tok-comment">/// ErrorSetDecl <- KEYWORD_error LBRACE IdentifierList RBRACE</span></span>
<span class="line" id="L2496"><span class="tok-comment">///</span></span>
<span class="line" id="L2497"><span class="tok-comment">/// GroupedExpr <- LPAREN Expr RPAREN</span></span>
<span class="line" id="L2498"><span class="tok-comment">///</span></span>
<span class="line" id="L2499"><span class="tok-comment">/// IfTypeExpr <- IfPrefix TypeExpr (KEYWORD_else Payload? TypeExpr)?</span></span>
<span class="line" id="L2500"><span class="tok-comment">///</span></span>
<span class="line" id="L2501"><span class="tok-comment">/// LabeledTypeExpr</span></span>
<span class="line" id="L2502"><span class="tok-comment">/// <- BlockLabel Block</span></span>
<span class="line" id="L2503"><span class="tok-comment">/// / BlockLabel? LoopTypeExpr</span></span>
<span class="line" id="L2504"><span class="tok-comment">///</span></span>
<span class="line" id="L2505"><span class="tok-comment">/// LoopTypeExpr <- KEYWORD_inline? (ForTypeExpr / WhileTypeExpr)</span></span>
<span class="line" id="L2506"><span class="tok-kw">fn</span> <span class="tok-fn">parsePrimaryTypeExpr</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L2507"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L2508"> .char_literal => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2509"> .tag = .char_literal,</span>
<span class="line" id="L2510"> .main_token = p.nextToken(),</span>
<span class="line" id="L2511"> .data = .{</span>
<span class="line" id="L2512"> .lhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2513"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2514"> },</span>
<span class="line" id="L2515"> }),</span>
<span class="line" id="L2516"> .number_literal => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2517"> .tag = .number_literal,</span>
<span class="line" id="L2518"> .main_token = p.nextToken(),</span>
<span class="line" id="L2519"> .data = .{</span>
<span class="line" id="L2520"> .lhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2521"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2522"> },</span>
<span class="line" id="L2523"> }),</span>
<span class="line" id="L2524"> .keyword_unreachable => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2525"> .tag = .unreachable_literal,</span>
<span class="line" id="L2526"> .main_token = p.nextToken(),</span>
<span class="line" id="L2527"> .data = .{</span>
<span class="line" id="L2528"> .lhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2529"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2530"> },</span>
<span class="line" id="L2531"> }),</span>
<span class="line" id="L2532"> .keyword_anyframe => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2533"> .tag = .anyframe_literal,</span>
<span class="line" id="L2534"> .main_token = p.nextToken(),</span>
<span class="line" id="L2535"> .data = .{</span>
<span class="line" id="L2536"> .lhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2537"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2538"> },</span>
<span class="line" id="L2539"> }),</span>
<span class="line" id="L2540"> .string_literal => {</span>
<span class="line" id="L2541"> <span class="tok-kw">const</span> main_token = p.nextToken();</span>
<span class="line" id="L2542"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2543"> .tag = .string_literal,</span>
<span class="line" id="L2544"> .main_token = main_token,</span>
<span class="line" id="L2545"> .data = .{</span>
<span class="line" id="L2546"> .lhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2547"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2548"> },</span>
<span class="line" id="L2549"> });</span>
<span class="line" id="L2550"> },</span>
<span class="line" id="L2551"></span>
<span class="line" id="L2552"> .builtin => <span class="tok-kw">return</span> p.parseBuiltinCall(),</span>
<span class="line" id="L2553"> .keyword_fn => <span class="tok-kw">return</span> p.parseFnProto(),</span>
<span class="line" id="L2554"> .keyword_if => <span class="tok-kw">return</span> p.parseIf(expectTypeExpr),</span>
<span class="line" id="L2555"> .keyword_switch => <span class="tok-kw">return</span> p.expectSwitchExpr(),</span>
<span class="line" id="L2556"></span>
<span class="line" id="L2557"> .keyword_extern,</span>
<span class="line" id="L2558"> .keyword_packed,</span>
<span class="line" id="L2559"> => {</span>
<span class="line" id="L2560"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2561"> <span class="tok-kw">return</span> p.parseContainerDeclAuto();</span>
<span class="line" id="L2562"> },</span>
<span class="line" id="L2563"></span>
<span class="line" id="L2564"> .keyword_struct,</span>
<span class="line" id="L2565"> .keyword_opaque,</span>
<span class="line" id="L2566"> .keyword_enum,</span>
<span class="line" id="L2567"> .keyword_union,</span>
<span class="line" id="L2568"> => <span class="tok-kw">return</span> p.parseContainerDeclAuto(),</span>
<span class="line" id="L2569"></span>
<span class="line" id="L2570"> .keyword_comptime => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2571"> .tag = .@"comptime",</span>
<span class="line" id="L2572"> .main_token = p.nextToken(),</span>
<span class="line" id="L2573"> .data = .{</span>
<span class="line" id="L2574"> .lhs = <span class="tok-kw">try</span> p.expectTypeExpr(),</span>
<span class="line" id="L2575"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2576"> },</span>
<span class="line" id="L2577"> }),</span>
<span class="line" id="L2578"> .multiline_string_literal_line => {</span>
<span class="line" id="L2579"> <span class="tok-kw">const</span> first_line = p.nextToken();</span>
<span class="line" id="L2580"> <span class="tok-kw">while</span> (p.token_tags[p.tok_i] == .multiline_string_literal_line) {</span>
<span class="line" id="L2581"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2582"> }</span>
<span class="line" id="L2583"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2584"> .tag = .multiline_string_literal,</span>
<span class="line" id="L2585"> .main_token = first_line,</span>
<span class="line" id="L2586"> .data = .{</span>
<span class="line" id="L2587"> .lhs = first_line,</span>
<span class="line" id="L2588"> .rhs = p.tok_i - <span class="tok-number">1</span>,</span>
<span class="line" id="L2589"> },</span>
<span class="line" id="L2590"> });</span>
<span class="line" id="L2591"> },</span>
<span class="line" id="L2592"> .identifier => <span class="tok-kw">switch</span> (p.token_tags[p.tok_i + <span class="tok-number">1</span>]) {</span>
<span class="line" id="L2593"> .colon => <span class="tok-kw">switch</span> (p.token_tags[p.tok_i + <span class="tok-number">2</span>]) {</span>
<span class="line" id="L2594"> .keyword_inline => {</span>
<span class="line" id="L2595"> p.tok_i += <span class="tok-number">3</span>;</span>
<span class="line" id="L2596"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L2597"> .keyword_for => <span class="tok-kw">return</span> p.parseForTypeExpr(),</span>
<span class="line" id="L2598"> .keyword_while => <span class="tok-kw">return</span> p.parseWhileTypeExpr(),</span>
<span class="line" id="L2599"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> p.fail(.expected_inlinable),</span>
<span class="line" id="L2600"> }</span>
<span class="line" id="L2601"> },</span>
<span class="line" id="L2602"> .keyword_for => {</span>
<span class="line" id="L2603"> p.tok_i += <span class="tok-number">2</span>;</span>
<span class="line" id="L2604"> <span class="tok-kw">return</span> p.parseForTypeExpr();</span>
<span class="line" id="L2605"> },</span>
<span class="line" id="L2606"> .keyword_while => {</span>
<span class="line" id="L2607"> p.tok_i += <span class="tok-number">2</span>;</span>
<span class="line" id="L2608"> <span class="tok-kw">return</span> p.parseWhileTypeExpr();</span>
<span class="line" id="L2609"> },</span>
<span class="line" id="L2610"> .l_brace => {</span>
<span class="line" id="L2611"> p.tok_i += <span class="tok-number">2</span>;</span>
<span class="line" id="L2612"> <span class="tok-kw">return</span> p.parseBlock();</span>
<span class="line" id="L2613"> },</span>
<span class="line" id="L2614"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2615"> .tag = .identifier,</span>
<span class="line" id="L2616"> .main_token = p.nextToken(),</span>
<span class="line" id="L2617"> .data = .{</span>
<span class="line" id="L2618"> .lhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2619"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2620"> },</span>
<span class="line" id="L2621"> }),</span>
<span class="line" id="L2622"> },</span>
<span class="line" id="L2623"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2624"> .tag = .identifier,</span>
<span class="line" id="L2625"> .main_token = p.nextToken(),</span>
<span class="line" id="L2626"> .data = .{</span>
<span class="line" id="L2627"> .lhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2628"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2629"> },</span>
<span class="line" id="L2630"> }),</span>
<span class="line" id="L2631"> },</span>
<span class="line" id="L2632"> .keyword_inline => {</span>
<span class="line" id="L2633"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2634"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L2635"> .keyword_for => <span class="tok-kw">return</span> p.parseForTypeExpr(),</span>
<span class="line" id="L2636"> .keyword_while => <span class="tok-kw">return</span> p.parseWhileTypeExpr(),</span>
<span class="line" id="L2637"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> p.fail(.expected_inlinable),</span>
<span class="line" id="L2638"> }</span>
<span class="line" id="L2639"> },</span>
<span class="line" id="L2640"> .keyword_for => <span class="tok-kw">return</span> p.parseForTypeExpr(),</span>
<span class="line" id="L2641"> .keyword_while => <span class="tok-kw">return</span> p.parseWhileTypeExpr(),</span>
<span class="line" id="L2642"> .period => <span class="tok-kw">switch</span> (p.token_tags[p.tok_i + <span class="tok-number">1</span>]) {</span>
<span class="line" id="L2643"> .identifier => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2644"> .tag = .enum_literal,</span>
<span class="line" id="L2645"> .data = .{</span>
<span class="line" id="L2646"> .lhs = p.nextToken(), <span class="tok-comment">// dot</span>
</span>
<span class="line" id="L2647"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2648"> },</span>
<span class="line" id="L2649"> .main_token = p.nextToken(), <span class="tok-comment">// identifier</span>
</span>
<span class="line" id="L2650"> }),</span>
<span class="line" id="L2651"> .l_brace => {</span>
<span class="line" id="L2652"> <span class="tok-kw">const</span> lbrace = p.tok_i + <span class="tok-number">1</span>;</span>
<span class="line" id="L2653"> p.tok_i = lbrace + <span class="tok-number">1</span>;</span>
<span class="line" id="L2654"></span>
<span class="line" id="L2655"> <span class="tok-comment">// If there are 0, 1, or 2 items, we can use ArrayInitDotTwo/StructInitDotTwo;</span>
</span>
<span class="line" id="L2656"> <span class="tok-comment">// otherwise we use the full ArrayInitDot/StructInitDot.</span>
</span>
<span class="line" id="L2657"></span>
<span class="line" id="L2658"> <span class="tok-kw">const</span> scratch_top = p.scratch.items.len;</span>
<span class="line" id="L2659"> <span class="tok-kw">defer</span> p.scratch.shrinkRetainingCapacity(scratch_top);</span>
<span class="line" id="L2660"> <span class="tok-kw">const</span> field_init = <span class="tok-kw">try</span> p.parseFieldInit();</span>
<span class="line" id="L2661"> <span class="tok-kw">if</span> (field_init != <span class="tok-number">0</span>) {</span>
<span class="line" id="L2662"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, field_init);</span>
<span class="line" id="L2663"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L2664"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L2665"> .comma => p.tok_i += <span class="tok-number">1</span>,</span>
<span class="line" id="L2666"> .r_brace => {</span>
<span class="line" id="L2667"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2668"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L2669"> },</span>
<span class="line" id="L2670"> .colon, .r_paren, .r_bracket => <span class="tok-kw">return</span> p.failExpected(.r_brace),</span>
<span class="line" id="L2671"> <span class="tok-comment">// Likely just a missing comma; give error but continue parsing.</span>
</span>
<span class="line" id="L2672"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> p.warn(.expected_comma_after_initializer),</span>
<span class="line" id="L2673"> }</span>
<span class="line" id="L2674"> <span class="tok-kw">if</span> (p.eatToken(.r_brace)) |_| <span class="tok-kw">break</span>;</span>
<span class="line" id="L2675"> <span class="tok-kw">const</span> next = <span class="tok-kw">try</span> p.expectFieldInit();</span>
<span class="line" id="L2676"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, next);</span>
<span class="line" id="L2677"> }</span>
<span class="line" id="L2678"> <span class="tok-kw">const</span> comma = (p.token_tags[p.tok_i - <span class="tok-number">2</span>] == .comma);</span>
<span class="line" id="L2679"> <span class="tok-kw">const</span> inits = p.scratch.items[scratch_top..];</span>
<span class="line" id="L2680"> <span class="tok-kw">switch</span> (inits.len) {</span>
<span class="line" id="L2681"> <span class="tok-number">0</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L2682"> <span class="tok-number">1</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2683"> .tag = <span class="tok-kw">if</span> (comma) .struct_init_dot_two_comma <span class="tok-kw">else</span> .struct_init_dot_two,</span>
<span class="line" id="L2684"> .main_token = lbrace,</span>
<span class="line" id="L2685"> .data = .{</span>
<span class="line" id="L2686"> .lhs = inits[<span class="tok-number">0</span>],</span>
<span class="line" id="L2687"> .rhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L2688"> },</span>
<span class="line" id="L2689"> }),</span>
<span class="line" id="L2690"> <span class="tok-number">2</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2691"> .tag = <span class="tok-kw">if</span> (comma) .struct_init_dot_two_comma <span class="tok-kw">else</span> .struct_init_dot_two,</span>
<span class="line" id="L2692"> .main_token = lbrace,</span>
<span class="line" id="L2693"> .data = .{</span>
<span class="line" id="L2694"> .lhs = inits[<span class="tok-number">0</span>],</span>
<span class="line" id="L2695"> .rhs = inits[<span class="tok-number">1</span>],</span>
<span class="line" id="L2696"> },</span>
<span class="line" id="L2697"> }),</span>
<span class="line" id="L2698"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L2699"> <span class="tok-kw">const</span> span = <span class="tok-kw">try</span> p.listToSpan(inits);</span>
<span class="line" id="L2700"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2701"> .tag = <span class="tok-kw">if</span> (comma) .struct_init_dot_comma <span class="tok-kw">else</span> .struct_init_dot,</span>
<span class="line" id="L2702"> .main_token = lbrace,</span>
<span class="line" id="L2703"> .data = .{</span>
<span class="line" id="L2704"> .lhs = span.start,</span>
<span class="line" id="L2705"> .rhs = span.end,</span>
<span class="line" id="L2706"> },</span>
<span class="line" id="L2707"> });</span>
<span class="line" id="L2708"> },</span>
<span class="line" id="L2709"> }</span>
<span class="line" id="L2710"> }</span>
<span class="line" id="L2711"></span>
<span class="line" id="L2712"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L2713"> <span class="tok-kw">if</span> (p.eatToken(.r_brace)) |_| <span class="tok-kw">break</span>;</span>
<span class="line" id="L2714"> <span class="tok-kw">const</span> elem_init = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L2715"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, elem_init);</span>
<span class="line" id="L2716"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L2717"> .comma => p.tok_i += <span class="tok-number">1</span>,</span>
<span class="line" id="L2718"> .r_brace => {</span>
<span class="line" id="L2719"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2720"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L2721"> },</span>
<span class="line" id="L2722"> .colon, .r_paren, .r_bracket => <span class="tok-kw">return</span> p.failExpected(.r_brace),</span>
<span class="line" id="L2723"> <span class="tok-comment">// Likely just a missing comma; give error but continue parsing.</span>
</span>
<span class="line" id="L2724"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> p.warn(.expected_comma_after_initializer),</span>
<span class="line" id="L2725"> }</span>
<span class="line" id="L2726"> }</span>
<span class="line" id="L2727"> <span class="tok-kw">const</span> comma = (p.token_tags[p.tok_i - <span class="tok-number">2</span>] == .comma);</span>
<span class="line" id="L2728"> <span class="tok-kw">const</span> inits = p.scratch.items[scratch_top..];</span>
<span class="line" id="L2729"> <span class="tok-kw">switch</span> (inits.len) {</span>
<span class="line" id="L2730"> <span class="tok-number">0</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2731"> .tag = .struct_init_dot_two,</span>
<span class="line" id="L2732"> .main_token = lbrace,</span>
<span class="line" id="L2733"> .data = .{</span>
<span class="line" id="L2734"> .lhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L2735"> .rhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L2736"> },</span>
<span class="line" id="L2737"> }),</span>
<span class="line" id="L2738"> <span class="tok-number">1</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2739"> .tag = <span class="tok-kw">if</span> (comma) .array_init_dot_two_comma <span class="tok-kw">else</span> .array_init_dot_two,</span>
<span class="line" id="L2740"> .main_token = lbrace,</span>
<span class="line" id="L2741"> .data = .{</span>
<span class="line" id="L2742"> .lhs = inits[<span class="tok-number">0</span>],</span>
<span class="line" id="L2743"> .rhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L2744"> },</span>
<span class="line" id="L2745"> }),</span>
<span class="line" id="L2746"> <span class="tok-number">2</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2747"> .tag = <span class="tok-kw">if</span> (comma) .array_init_dot_two_comma <span class="tok-kw">else</span> .array_init_dot_two,</span>
<span class="line" id="L2748"> .main_token = lbrace,</span>
<span class="line" id="L2749"> .data = .{</span>
<span class="line" id="L2750"> .lhs = inits[<span class="tok-number">0</span>],</span>
<span class="line" id="L2751"> .rhs = inits[<span class="tok-number">1</span>],</span>
<span class="line" id="L2752"> },</span>
<span class="line" id="L2753"> }),</span>
<span class="line" id="L2754"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L2755"> <span class="tok-kw">const</span> span = <span class="tok-kw">try</span> p.listToSpan(inits);</span>
<span class="line" id="L2756"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2757"> .tag = <span class="tok-kw">if</span> (comma) .array_init_dot_comma <span class="tok-kw">else</span> .array_init_dot,</span>
<span class="line" id="L2758"> .main_token = lbrace,</span>
<span class="line" id="L2759"> .data = .{</span>
<span class="line" id="L2760"> .lhs = span.start,</span>
<span class="line" id="L2761"> .rhs = span.end,</span>
<span class="line" id="L2762"> },</span>
<span class="line" id="L2763"> });</span>
<span class="line" id="L2764"> },</span>
<span class="line" id="L2765"> }</span>
<span class="line" id="L2766"> },</span>
<span class="line" id="L2767"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> null_node,</span>
<span class="line" id="L2768"> },</span>
<span class="line" id="L2769"> .keyword_error => <span class="tok-kw">switch</span> (p.token_tags[p.tok_i + <span class="tok-number">1</span>]) {</span>
<span class="line" id="L2770"> .l_brace => {</span>
<span class="line" id="L2771"> <span class="tok-kw">const</span> error_token = p.tok_i;</span>
<span class="line" id="L2772"> p.tok_i += <span class="tok-number">2</span>;</span>
<span class="line" id="L2773"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L2774"> <span class="tok-kw">if</span> (p.eatToken(.r_brace)) |_| <span class="tok-kw">break</span>;</span>
<span class="line" id="L2775"> _ = <span class="tok-kw">try</span> p.eatDocComments();</span>
<span class="line" id="L2776"> _ = <span class="tok-kw">try</span> p.expectToken(.identifier);</span>
<span class="line" id="L2777"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L2778"> .comma => p.tok_i += <span class="tok-number">1</span>,</span>
<span class="line" id="L2779"> .r_brace => {</span>
<span class="line" id="L2780"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L2781"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L2782"> },</span>
<span class="line" id="L2783"> .colon, .r_paren, .r_bracket => <span class="tok-kw">return</span> p.failExpected(.r_brace),</span>
<span class="line" id="L2784"> <span class="tok-comment">// Likely just a missing comma; give error but continue parsing.</span>
</span>
<span class="line" id="L2785"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> p.warn(.expected_comma_after_field),</span>
<span class="line" id="L2786"> }</span>
<span class="line" id="L2787"> }</span>
<span class="line" id="L2788"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2789"> .tag = .error_set_decl,</span>
<span class="line" id="L2790"> .main_token = error_token,</span>
<span class="line" id="L2791"> .data = .{</span>
<span class="line" id="L2792"> .lhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L2793"> .rhs = p.tok_i - <span class="tok-number">1</span>, <span class="tok-comment">// rbrace</span>
</span>
<span class="line" id="L2794"> },</span>
<span class="line" id="L2795"> });</span>
<span class="line" id="L2796"> },</span>
<span class="line" id="L2797"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L2798"> <span class="tok-kw">const</span> main_token = p.nextToken();</span>
<span class="line" id="L2799"> <span class="tok-kw">const</span> period = p.eatToken(.period);</span>
<span class="line" id="L2800"> <span class="tok-kw">if</span> (period == <span class="tok-null">null</span>) <span class="tok-kw">try</span> p.warnExpected(.period);</span>
<span class="line" id="L2801"> <span class="tok-kw">const</span> identifier = p.eatToken(.identifier);</span>
<span class="line" id="L2802"> <span class="tok-kw">if</span> (identifier == <span class="tok-null">null</span>) <span class="tok-kw">try</span> p.warnExpected(.identifier);</span>
<span class="line" id="L2803"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2804"> .tag = .error_value,</span>
<span class="line" id="L2805"> .main_token = main_token,</span>
<span class="line" id="L2806"> .data = .{</span>
<span class="line" id="L2807"> .lhs = period <span class="tok-kw">orelse</span> <span class="tok-number">0</span>,</span>
<span class="line" id="L2808"> .rhs = identifier <span class="tok-kw">orelse</span> <span class="tok-number">0</span>,</span>
<span class="line" id="L2809"> },</span>
<span class="line" id="L2810"> });</span>
<span class="line" id="L2811"> },</span>
<span class="line" id="L2812"> },</span>
<span class="line" id="L2813"> .l_paren => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2814"> .tag = .grouped_expression,</span>
<span class="line" id="L2815"> .main_token = p.nextToken(),</span>
<span class="line" id="L2816"> .data = .{</span>
<span class="line" id="L2817"> .lhs = <span class="tok-kw">try</span> p.expectExpr(),</span>
<span class="line" id="L2818"> .rhs = <span class="tok-kw">try</span> p.expectToken(.r_paren),</span>
<span class="line" id="L2819"> },</span>
<span class="line" id="L2820"> }),</span>
<span class="line" id="L2821"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> null_node,</span>
<span class="line" id="L2822"> }</span>
<span class="line" id="L2823">}</span>
<span class="line" id="L2824"></span>
<span class="line" id="L2825"><span class="tok-kw">fn</span> <span class="tok-fn">expectPrimaryTypeExpr</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L2826"> <span class="tok-kw">const</span> node = <span class="tok-kw">try</span> p.parsePrimaryTypeExpr();</span>
<span class="line" id="L2827"> <span class="tok-kw">if</span> (node == <span class="tok-number">0</span>) {</span>
<span class="line" id="L2828"> <span class="tok-kw">return</span> p.fail(.expected_primary_type_expr);</span>
<span class="line" id="L2829"> }</span>
<span class="line" id="L2830"> <span class="tok-kw">return</span> node;</span>
<span class="line" id="L2831">}</span>
<span class="line" id="L2832"></span>
<span class="line" id="L2833"><span class="tok-comment">/// ForTypeExpr <- ForPrefix TypeExpr (KEYWORD_else TypeExpr)?</span></span>
<span class="line" id="L2834"><span class="tok-kw">fn</span> <span class="tok-fn">parseForTypeExpr</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L2835"> <span class="tok-kw">const</span> for_token = p.eatToken(.keyword_for) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L2836"></span>
<span class="line" id="L2837"> <span class="tok-kw">const</span> scratch_top = p.scratch.items.len;</span>
<span class="line" id="L2838"> <span class="tok-kw">defer</span> p.scratch.shrinkRetainingCapacity(scratch_top);</span>
<span class="line" id="L2839"> <span class="tok-kw">const</span> inputs = <span class="tok-kw">try</span> p.forPrefix();</span>
<span class="line" id="L2840"></span>
<span class="line" id="L2841"> <span class="tok-kw">const</span> then_expr = <span class="tok-kw">try</span> p.expectTypeExpr();</span>
<span class="line" id="L2842"> <span class="tok-kw">var</span> has_else = <span class="tok-null">false</span>;</span>
<span class="line" id="L2843"> <span class="tok-kw">if</span> (p.eatToken(.keyword_else)) |_| {</span>
<span class="line" id="L2844"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, then_expr);</span>
<span class="line" id="L2845"> <span class="tok-kw">const</span> else_expr = <span class="tok-kw">try</span> p.expectTypeExpr();</span>
<span class="line" id="L2846"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, else_expr);</span>
<span class="line" id="L2847"> has_else = <span class="tok-null">true</span>;</span>
<span class="line" id="L2848"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (inputs == <span class="tok-number">1</span>) {</span>
<span class="line" id="L2849"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2850"> .tag = .for_simple,</span>
<span class="line" id="L2851"> .main_token = for_token,</span>
<span class="line" id="L2852"> .data = .{</span>
<span class="line" id="L2853"> .lhs = p.scratch.items[scratch_top],</span>
<span class="line" id="L2854"> .rhs = then_expr,</span>
<span class="line" id="L2855"> },</span>
<span class="line" id="L2856"> });</span>
<span class="line" id="L2857"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L2858"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, then_expr);</span>
<span class="line" id="L2859"> }</span>
<span class="line" id="L2860"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2861"> .tag = .@"for",</span>
<span class="line" id="L2862"> .main_token = for_token,</span>
<span class="line" id="L2863"> .data = .{</span>
<span class="line" id="L2864"> .lhs = (<span class="tok-kw">try</span> p.listToSpan(p.scratch.items[scratch_top..])).start,</span>
<span class="line" id="L2865"> .rhs = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@bitCast</span>(Node.For{</span>
<span class="line" id="L2866"> .inputs = <span class="tok-builtin">@as</span>(<span class="tok-type">u31</span>, <span class="tok-builtin">@intCast</span>(inputs)),</span>
<span class="line" id="L2867"> .has_else = has_else,</span>
<span class="line" id="L2868"> })),</span>
<span class="line" id="L2869"> },</span>
<span class="line" id="L2870"> });</span>
<span class="line" id="L2871">}</span>
<span class="line" id="L2872"></span>
<span class="line" id="L2873"><span class="tok-comment">/// WhilePrefix <- KEYWORD_while LPAREN Expr RPAREN PtrPayload? WhileContinueExpr?</span></span>
<span class="line" id="L2874"><span class="tok-comment">///</span></span>
<span class="line" id="L2875"><span class="tok-comment">/// WhileTypeExpr <- WhilePrefix TypeExpr (KEYWORD_else Payload? TypeExpr)?</span></span>
<span class="line" id="L2876"><span class="tok-kw">fn</span> <span class="tok-fn">parseWhileTypeExpr</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L2877"> <span class="tok-kw">const</span> while_token = p.eatToken(.keyword_while) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L2878"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L2879"> <span class="tok-kw">const</span> condition = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L2880"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L2881"> _ = <span class="tok-kw">try</span> p.parsePtrPayload();</span>
<span class="line" id="L2882"> <span class="tok-kw">const</span> cont_expr = <span class="tok-kw">try</span> p.parseWhileContinueExpr();</span>
<span class="line" id="L2883"></span>
<span class="line" id="L2884"> <span class="tok-kw">const</span> then_expr = <span class="tok-kw">try</span> p.expectTypeExpr();</span>
<span class="line" id="L2885"> _ = p.eatToken(.keyword_else) <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L2886"> <span class="tok-kw">if</span> (cont_expr == <span class="tok-number">0</span>) {</span>
<span class="line" id="L2887"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2888"> .tag = .while_simple,</span>
<span class="line" id="L2889"> .main_token = while_token,</span>
<span class="line" id="L2890"> .data = .{</span>
<span class="line" id="L2891"> .lhs = condition,</span>
<span class="line" id="L2892"> .rhs = then_expr,</span>
<span class="line" id="L2893"> },</span>
<span class="line" id="L2894"> });</span>
<span class="line" id="L2895"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L2896"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2897"> .tag = .while_cont,</span>
<span class="line" id="L2898"> .main_token = while_token,</span>
<span class="line" id="L2899"> .data = .{</span>
<span class="line" id="L2900"> .lhs = condition,</span>
<span class="line" id="L2901"> .rhs = <span class="tok-kw">try</span> p.addExtra(Node.WhileCont{</span>
<span class="line" id="L2902"> .cont_expr = cont_expr,</span>
<span class="line" id="L2903"> .then_expr = then_expr,</span>
<span class="line" id="L2904"> }),</span>
<span class="line" id="L2905"> },</span>
<span class="line" id="L2906"> });</span>
<span class="line" id="L2907"> }</span>
<span class="line" id="L2908"> };</span>
<span class="line" id="L2909"> _ = <span class="tok-kw">try</span> p.parsePayload();</span>
<span class="line" id="L2910"> <span class="tok-kw">const</span> else_expr = <span class="tok-kw">try</span> p.expectTypeExpr();</span>
<span class="line" id="L2911"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2912"> .tag = .@"while",</span>
<span class="line" id="L2913"> .main_token = while_token,</span>
<span class="line" id="L2914"> .data = .{</span>
<span class="line" id="L2915"> .lhs = condition,</span>
<span class="line" id="L2916"> .rhs = <span class="tok-kw">try</span> p.addExtra(Node.While{</span>
<span class="line" id="L2917"> .cont_expr = cont_expr,</span>
<span class="line" id="L2918"> .then_expr = then_expr,</span>
<span class="line" id="L2919"> .else_expr = else_expr,</span>
<span class="line" id="L2920"> }),</span>
<span class="line" id="L2921"> },</span>
<span class="line" id="L2922"> });</span>
<span class="line" id="L2923">}</span>
<span class="line" id="L2924"></span>
<span class="line" id="L2925"><span class="tok-comment">/// SwitchExpr <- KEYWORD_switch LPAREN Expr RPAREN LBRACE SwitchProngList RBRACE</span></span>
<span class="line" id="L2926"><span class="tok-kw">fn</span> <span class="tok-fn">expectSwitchExpr</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L2927"> <span class="tok-kw">const</span> switch_token = p.assertToken(.keyword_switch);</span>
<span class="line" id="L2928"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L2929"> <span class="tok-kw">const</span> expr_node = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L2930"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L2931"> _ = <span class="tok-kw">try</span> p.expectToken(.l_brace);</span>
<span class="line" id="L2932"> <span class="tok-kw">const</span> cases = <span class="tok-kw">try</span> p.parseSwitchProngList();</span>
<span class="line" id="L2933"> <span class="tok-kw">const</span> trailing_comma = p.token_tags[p.tok_i - <span class="tok-number">1</span>] == .comma;</span>
<span class="line" id="L2934"> _ = <span class="tok-kw">try</span> p.expectToken(.r_brace);</span>
<span class="line" id="L2935"></span>
<span class="line" id="L2936"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2937"> .tag = <span class="tok-kw">if</span> (trailing_comma) .switch_comma <span class="tok-kw">else</span> .@"switch",</span>
<span class="line" id="L2938"> .main_token = switch_token,</span>
<span class="line" id="L2939"> .data = .{</span>
<span class="line" id="L2940"> .lhs = expr_node,</span>
<span class="line" id="L2941"> .rhs = <span class="tok-kw">try</span> p.addExtra(Node.SubRange{</span>
<span class="line" id="L2942"> .start = cases.start,</span>
<span class="line" id="L2943"> .end = cases.end,</span>
<span class="line" id="L2944"> }),</span>
<span class="line" id="L2945"> },</span>
<span class="line" id="L2946"> });</span>
<span class="line" id="L2947">}</span>
<span class="line" id="L2948"></span>
<span class="line" id="L2949"><span class="tok-comment">/// AsmExpr <- KEYWORD_asm KEYWORD_volatile? LPAREN Expr AsmOutput? RPAREN</span></span>
<span class="line" id="L2950"><span class="tok-comment">///</span></span>
<span class="line" id="L2951"><span class="tok-comment">/// AsmOutput <- COLON AsmOutputList AsmInput?</span></span>
<span class="line" id="L2952"><span class="tok-comment">///</span></span>
<span class="line" id="L2953"><span class="tok-comment">/// AsmInput <- COLON AsmInputList AsmClobbers?</span></span>
<span class="line" id="L2954"><span class="tok-comment">///</span></span>
<span class="line" id="L2955"><span class="tok-comment">/// AsmClobbers <- COLON StringList</span></span>
<span class="line" id="L2956"><span class="tok-comment">///</span></span>
<span class="line" id="L2957"><span class="tok-comment">/// StringList <- (STRINGLITERAL COMMA)* STRINGLITERAL?</span></span>
<span class="line" id="L2958"><span class="tok-comment">///</span></span>
<span class="line" id="L2959"><span class="tok-comment">/// AsmOutputList <- (AsmOutputItem COMMA)* AsmOutputItem?</span></span>
<span class="line" id="L2960"><span class="tok-comment">///</span></span>
<span class="line" id="L2961"><span class="tok-comment">/// AsmInputList <- (AsmInputItem COMMA)* AsmInputItem?</span></span>
<span class="line" id="L2962"><span class="tok-kw">fn</span> <span class="tok-fn">expectAsmExpr</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L2963"> <span class="tok-kw">const</span> asm_token = p.assertToken(.keyword_asm);</span>
<span class="line" id="L2964"> _ = p.eatToken(.keyword_volatile);</span>
<span class="line" id="L2965"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L2966"> <span class="tok-kw">const</span> template = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L2967"></span>
<span class="line" id="L2968"> <span class="tok-kw">if</span> (p.eatToken(.r_paren)) |rparen| {</span>
<span class="line" id="L2969"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L2970"> .tag = .asm_simple,</span>
<span class="line" id="L2971"> .main_token = asm_token,</span>
<span class="line" id="L2972"> .data = .{</span>
<span class="line" id="L2973"> .lhs = template,</span>
<span class="line" id="L2974"> .rhs = rparen,</span>
<span class="line" id="L2975"> },</span>
<span class="line" id="L2976"> });</span>
<span class="line" id="L2977"> }</span>
<span class="line" id="L2978"></span>
<span class="line" id="L2979"> _ = <span class="tok-kw">try</span> p.expectToken(.colon);</span>
<span class="line" id="L2980"></span>
<span class="line" id="L2981"> <span class="tok-kw">const</span> scratch_top = p.scratch.items.len;</span>
<span class="line" id="L2982"> <span class="tok-kw">defer</span> p.scratch.shrinkRetainingCapacity(scratch_top);</span>
<span class="line" id="L2983"></span>
<span class="line" id="L2984"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L2985"> <span class="tok-kw">const</span> output_item = <span class="tok-kw">try</span> p.parseAsmOutputItem();</span>
<span class="line" id="L2986"> <span class="tok-kw">if</span> (output_item == <span class="tok-number">0</span>) <span class="tok-kw">break</span>;</span>
<span class="line" id="L2987"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, output_item);</span>
<span class="line" id="L2988"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L2989"> .comma => p.tok_i += <span class="tok-number">1</span>,</span>
<span class="line" id="L2990"> <span class="tok-comment">// All possible delimiters.</span>
</span>
<span class="line" id="L2991"> .colon, .r_paren, .r_brace, .r_bracket => <span class="tok-kw">break</span>,</span>
<span class="line" id="L2992"> <span class="tok-comment">// Likely just a missing comma; give error but continue parsing.</span>
</span>
<span class="line" id="L2993"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> p.warnExpected(.comma),</span>
<span class="line" id="L2994"> }</span>
<span class="line" id="L2995"> }</span>
<span class="line" id="L2996"> <span class="tok-kw">if</span> (p.eatToken(.colon)) |_| {</span>
<span class="line" id="L2997"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L2998"> <span class="tok-kw">const</span> input_item = <span class="tok-kw">try</span> p.parseAsmInputItem();</span>
<span class="line" id="L2999"> <span class="tok-kw">if</span> (input_item == <span class="tok-number">0</span>) <span class="tok-kw">break</span>;</span>
<span class="line" id="L3000"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, input_item);</span>
<span class="line" id="L3001"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L3002"> .comma => p.tok_i += <span class="tok-number">1</span>,</span>
<span class="line" id="L3003"> <span class="tok-comment">// All possible delimiters.</span>
</span>
<span class="line" id="L3004"> .colon, .r_paren, .r_brace, .r_bracket => <span class="tok-kw">break</span>,</span>
<span class="line" id="L3005"> <span class="tok-comment">// Likely just a missing comma; give error but continue parsing.</span>
</span>
<span class="line" id="L3006"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> p.warnExpected(.comma),</span>
<span class="line" id="L3007"> }</span>
<span class="line" id="L3008"> }</span>
<span class="line" id="L3009"> <span class="tok-kw">if</span> (p.eatToken(.colon)) |_| {</span>
<span class="line" id="L3010"> <span class="tok-kw">while</span> (p.eatToken(.string_literal)) |_| {</span>
<span class="line" id="L3011"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L3012"> .comma => p.tok_i += <span class="tok-number">1</span>,</span>
<span class="line" id="L3013"> .colon, .r_paren, .r_brace, .r_bracket => <span class="tok-kw">break</span>,</span>
<span class="line" id="L3014"> <span class="tok-comment">// Likely just a missing comma; give error but continue parsing.</span>
</span>
<span class="line" id="L3015"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> p.warnExpected(.comma),</span>
<span class="line" id="L3016"> }</span>
<span class="line" id="L3017"> }</span>
<span class="line" id="L3018"> }</span>
<span class="line" id="L3019"> }</span>
<span class="line" id="L3020"> <span class="tok-kw">const</span> rparen = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L3021"> <span class="tok-kw">const</span> span = <span class="tok-kw">try</span> p.listToSpan(p.scratch.items[scratch_top..]);</span>
<span class="line" id="L3022"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3023"> .tag = .@"asm",</span>
<span class="line" id="L3024"> .main_token = asm_token,</span>
<span class="line" id="L3025"> .data = .{</span>
<span class="line" id="L3026"> .lhs = template,</span>
<span class="line" id="L3027"> .rhs = <span class="tok-kw">try</span> p.addExtra(Node.Asm{</span>
<span class="line" id="L3028"> .items_start = span.start,</span>
<span class="line" id="L3029"> .items_end = span.end,</span>
<span class="line" id="L3030"> .rparen = rparen,</span>
<span class="line" id="L3031"> }),</span>
<span class="line" id="L3032"> },</span>
<span class="line" id="L3033"> });</span>
<span class="line" id="L3034">}</span>
<span class="line" id="L3035"></span>
<span class="line" id="L3036"><span class="tok-comment">/// AsmOutputItem <- LBRACKET IDENTIFIER RBRACKET STRINGLITERAL LPAREN (MINUSRARROW TypeExpr / IDENTIFIER) RPAREN</span></span>
<span class="line" id="L3037"><span class="tok-kw">fn</span> <span class="tok-fn">parseAsmOutputItem</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L3038"> _ = p.eatToken(.l_bracket) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L3039"> <span class="tok-kw">const</span> identifier = <span class="tok-kw">try</span> p.expectToken(.identifier);</span>
<span class="line" id="L3040"> _ = <span class="tok-kw">try</span> p.expectToken(.r_bracket);</span>
<span class="line" id="L3041"> _ = <span class="tok-kw">try</span> p.expectToken(.string_literal);</span>
<span class="line" id="L3042"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L3043"> <span class="tok-kw">const</span> type_expr: Node.Index = blk: {</span>
<span class="line" id="L3044"> <span class="tok-kw">if</span> (p.eatToken(.arrow)) |_| {</span>
<span class="line" id="L3045"> <span class="tok-kw">break</span> :blk <span class="tok-kw">try</span> p.expectTypeExpr();</span>
<span class="line" id="L3046"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L3047"> _ = <span class="tok-kw">try</span> p.expectToken(.identifier);</span>
<span class="line" id="L3048"> <span class="tok-kw">break</span> :blk null_node;</span>
<span class="line" id="L3049"> }</span>
<span class="line" id="L3050"> };</span>
<span class="line" id="L3051"> <span class="tok-kw">const</span> rparen = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L3052"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3053"> .tag = .asm_output,</span>
<span class="line" id="L3054"> .main_token = identifier,</span>
<span class="line" id="L3055"> .data = .{</span>
<span class="line" id="L3056"> .lhs = type_expr,</span>
<span class="line" id="L3057"> .rhs = rparen,</span>
<span class="line" id="L3058"> },</span>
<span class="line" id="L3059"> });</span>
<span class="line" id="L3060">}</span>
<span class="line" id="L3061"></span>
<span class="line" id="L3062"><span class="tok-comment">/// AsmInputItem <- LBRACKET IDENTIFIER RBRACKET STRINGLITERAL LPAREN Expr RPAREN</span></span>
<span class="line" id="L3063"><span class="tok-kw">fn</span> <span class="tok-fn">parseAsmInputItem</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L3064"> _ = p.eatToken(.l_bracket) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L3065"> <span class="tok-kw">const</span> identifier = <span class="tok-kw">try</span> p.expectToken(.identifier);</span>
<span class="line" id="L3066"> _ = <span class="tok-kw">try</span> p.expectToken(.r_bracket);</span>
<span class="line" id="L3067"> _ = <span class="tok-kw">try</span> p.expectToken(.string_literal);</span>
<span class="line" id="L3068"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L3069"> <span class="tok-kw">const</span> expr = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L3070"> <span class="tok-kw">const</span> rparen = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L3071"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3072"> .tag = .asm_input,</span>
<span class="line" id="L3073"> .main_token = identifier,</span>
<span class="line" id="L3074"> .data = .{</span>
<span class="line" id="L3075"> .lhs = expr,</span>
<span class="line" id="L3076"> .rhs = rparen,</span>
<span class="line" id="L3077"> },</span>
<span class="line" id="L3078"> });</span>
<span class="line" id="L3079">}</span>
<span class="line" id="L3080"></span>
<span class="line" id="L3081"><span class="tok-comment">/// BreakLabel <- COLON IDENTIFIER</span></span>
<span class="line" id="L3082"><span class="tok-kw">fn</span> <span class="tok-fn">parseBreakLabel</span>(p: *Parse) !TokenIndex {</span>
<span class="line" id="L3083"> _ = p.eatToken(.colon) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(TokenIndex, <span class="tok-number">0</span>);</span>
<span class="line" id="L3084"> <span class="tok-kw">return</span> p.expectToken(.identifier);</span>
<span class="line" id="L3085">}</span>
<span class="line" id="L3086"></span>
<span class="line" id="L3087"><span class="tok-comment">/// BlockLabel <- IDENTIFIER COLON</span></span>
<span class="line" id="L3088"><span class="tok-kw">fn</span> <span class="tok-fn">parseBlockLabel</span>(p: *Parse) TokenIndex {</span>
<span class="line" id="L3089"> <span class="tok-kw">if</span> (p.token_tags[p.tok_i] == .identifier <span class="tok-kw">and</span></span>
<span class="line" id="L3090"> p.token_tags[p.tok_i + <span class="tok-number">1</span>] == .colon)</span>
<span class="line" id="L3091"> {</span>
<span class="line" id="L3092"> <span class="tok-kw">const</span> identifier = p.tok_i;</span>
<span class="line" id="L3093"> p.tok_i += <span class="tok-number">2</span>;</span>
<span class="line" id="L3094"> <span class="tok-kw">return</span> identifier;</span>
<span class="line" id="L3095"> }</span>
<span class="line" id="L3096"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L3097">}</span>
<span class="line" id="L3098"></span>
<span class="line" id="L3099"><span class="tok-comment">/// FieldInit <- DOT IDENTIFIER EQUAL Expr</span></span>
<span class="line" id="L3100"><span class="tok-kw">fn</span> <span class="tok-fn">parseFieldInit</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L3101"> <span class="tok-kw">if</span> (p.token_tags[p.tok_i + <span class="tok-number">0</span>] == .period <span class="tok-kw">and</span></span>
<span class="line" id="L3102"> p.token_tags[p.tok_i + <span class="tok-number">1</span>] == .identifier <span class="tok-kw">and</span></span>
<span class="line" id="L3103"> p.token_tags[p.tok_i + <span class="tok-number">2</span>] == .equal)</span>
<span class="line" id="L3104"> {</span>
<span class="line" id="L3105"> p.tok_i += <span class="tok-number">3</span>;</span>
<span class="line" id="L3106"> <span class="tok-kw">return</span> p.expectExpr();</span>
<span class="line" id="L3107"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L3108"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L3109"> }</span>
<span class="line" id="L3110">}</span>
<span class="line" id="L3111"></span>
<span class="line" id="L3112"><span class="tok-kw">fn</span> <span class="tok-fn">expectFieldInit</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L3113"> <span class="tok-kw">if</span> (p.token_tags[p.tok_i] != .period <span class="tok-kw">or</span></span>
<span class="line" id="L3114"> p.token_tags[p.tok_i + <span class="tok-number">1</span>] != .identifier <span class="tok-kw">or</span></span>
<span class="line" id="L3115"> p.token_tags[p.tok_i + <span class="tok-number">2</span>] != .equal)</span>
<span class="line" id="L3116"> <span class="tok-kw">return</span> p.fail(.expected_initializer);</span>
<span class="line" id="L3117"></span>
<span class="line" id="L3118"> p.tok_i += <span class="tok-number">3</span>;</span>
<span class="line" id="L3119"> <span class="tok-kw">return</span> p.expectExpr();</span>
<span class="line" id="L3120">}</span>
<span class="line" id="L3121"></span>
<span class="line" id="L3122"><span class="tok-comment">/// WhileContinueExpr <- COLON LPAREN AssignExpr RPAREN</span></span>
<span class="line" id="L3123"><span class="tok-kw">fn</span> <span class="tok-fn">parseWhileContinueExpr</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L3124"> _ = p.eatToken(.colon) <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L3125"> <span class="tok-kw">if</span> (p.token_tags[p.tok_i] == .l_paren <span class="tok-kw">and</span></span>
<span class="line" id="L3126"> p.tokensOnSameLine(p.tok_i - <span class="tok-number">1</span>, p.tok_i))</span>
<span class="line" id="L3127"> <span class="tok-kw">return</span> p.fail(.expected_continue_expr);</span>
<span class="line" id="L3128"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L3129"> };</span>
<span class="line" id="L3130"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L3131"> <span class="tok-kw">const</span> node = <span class="tok-kw">try</span> p.parseAssignExpr();</span>
<span class="line" id="L3132"> <span class="tok-kw">if</span> (node == <span class="tok-number">0</span>) <span class="tok-kw">return</span> p.fail(.expected_expr_or_assignment);</span>
<span class="line" id="L3133"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L3134"> <span class="tok-kw">return</span> node;</span>
<span class="line" id="L3135">}</span>
<span class="line" id="L3136"></span>
<span class="line" id="L3137"><span class="tok-comment">/// LinkSection <- KEYWORD_linksection LPAREN Expr RPAREN</span></span>
<span class="line" id="L3138"><span class="tok-kw">fn</span> <span class="tok-fn">parseLinkSection</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L3139"> _ = p.eatToken(.keyword_linksection) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L3140"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L3141"> <span class="tok-kw">const</span> expr_node = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L3142"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L3143"> <span class="tok-kw">return</span> expr_node;</span>
<span class="line" id="L3144">}</span>
<span class="line" id="L3145"></span>
<span class="line" id="L3146"><span class="tok-comment">/// CallConv <- KEYWORD_callconv LPAREN Expr RPAREN</span></span>
<span class="line" id="L3147"><span class="tok-kw">fn</span> <span class="tok-fn">parseCallconv</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L3148"> _ = p.eatToken(.keyword_callconv) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L3149"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L3150"> <span class="tok-kw">const</span> expr_node = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L3151"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L3152"> <span class="tok-kw">return</span> expr_node;</span>
<span class="line" id="L3153">}</span>
<span class="line" id="L3154"></span>
<span class="line" id="L3155"><span class="tok-comment">/// AddrSpace <- KEYWORD_addrspace LPAREN Expr RPAREN</span></span>
<span class="line" id="L3156"><span class="tok-kw">fn</span> <span class="tok-fn">parseAddrSpace</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L3157"> _ = p.eatToken(.keyword_addrspace) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L3158"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L3159"> <span class="tok-kw">const</span> expr_node = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L3160"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L3161"> <span class="tok-kw">return</span> expr_node;</span>
<span class="line" id="L3162">}</span>
<span class="line" id="L3163"></span>
<span class="line" id="L3164"><span class="tok-comment">/// This function can return null nodes and then still return nodes afterwards,</span></span>
<span class="line" id="L3165"><span class="tok-comment">/// such as in the case of anytype and `...`. Caller must look for rparen to find</span></span>
<span class="line" id="L3166"><span class="tok-comment">/// out when there are no more param decls left.</span></span>
<span class="line" id="L3167"><span class="tok-comment">///</span></span>
<span class="line" id="L3168"><span class="tok-comment">/// ParamDecl</span></span>
<span class="line" id="L3169"><span class="tok-comment">/// <- doc_comment? (KEYWORD_noalias / KEYWORD_comptime)? (IDENTIFIER COLON)? ParamType</span></span>
<span class="line" id="L3170"><span class="tok-comment">/// / DOT3</span></span>
<span class="line" id="L3171"><span class="tok-comment">///</span></span>
<span class="line" id="L3172"><span class="tok-comment">/// ParamType</span></span>
<span class="line" id="L3173"><span class="tok-comment">/// <- KEYWORD_anytype</span></span>
<span class="line" id="L3174"><span class="tok-comment">/// / TypeExpr</span></span>
<span class="line" id="L3175"><span class="tok-kw">fn</span> <span class="tok-fn">expectParamDecl</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L3176"> _ = <span class="tok-kw">try</span> p.eatDocComments();</span>
<span class="line" id="L3177"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L3178"> .keyword_noalias, .keyword_comptime => p.tok_i += <span class="tok-number">1</span>,</span>
<span class="line" id="L3179"> .ellipsis3 => {</span>
<span class="line" id="L3180"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L3181"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L3182"> },</span>
<span class="line" id="L3183"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L3184"> }</span>
<span class="line" id="L3185"> <span class="tok-kw">if</span> (p.token_tags[p.tok_i] == .identifier <span class="tok-kw">and</span></span>
<span class="line" id="L3186"> p.token_tags[p.tok_i + <span class="tok-number">1</span>] == .colon)</span>
<span class="line" id="L3187"> {</span>
<span class="line" id="L3188"> p.tok_i += <span class="tok-number">2</span>;</span>
<span class="line" id="L3189"> }</span>
<span class="line" id="L3190"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L3191"> .keyword_anytype => {</span>
<span class="line" id="L3192"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L3193"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L3194"> },</span>
<span class="line" id="L3195"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> p.expectTypeExpr(),</span>
<span class="line" id="L3196"> }</span>
<span class="line" id="L3197">}</span>
<span class="line" id="L3198"></span>
<span class="line" id="L3199"><span class="tok-comment">/// Payload <- PIPE IDENTIFIER PIPE</span></span>
<span class="line" id="L3200"><span class="tok-kw">fn</span> <span class="tok-fn">parsePayload</span>(p: *Parse) !TokenIndex {</span>
<span class="line" id="L3201"> _ = p.eatToken(.pipe) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(TokenIndex, <span class="tok-number">0</span>);</span>
<span class="line" id="L3202"> <span class="tok-kw">const</span> identifier = <span class="tok-kw">try</span> p.expectToken(.identifier);</span>
<span class="line" id="L3203"> _ = <span class="tok-kw">try</span> p.expectToken(.pipe);</span>
<span class="line" id="L3204"> <span class="tok-kw">return</span> identifier;</span>
<span class="line" id="L3205">}</span>
<span class="line" id="L3206"></span>
<span class="line" id="L3207"><span class="tok-comment">/// PtrPayload <- PIPE ASTERISK? IDENTIFIER PIPE</span></span>
<span class="line" id="L3208"><span class="tok-kw">fn</span> <span class="tok-fn">parsePtrPayload</span>(p: *Parse) !TokenIndex {</span>
<span class="line" id="L3209"> _ = p.eatToken(.pipe) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(TokenIndex, <span class="tok-number">0</span>);</span>
<span class="line" id="L3210"> _ = p.eatToken(.asterisk);</span>
<span class="line" id="L3211"> <span class="tok-kw">const</span> identifier = <span class="tok-kw">try</span> p.expectToken(.identifier);</span>
<span class="line" id="L3212"> _ = <span class="tok-kw">try</span> p.expectToken(.pipe);</span>
<span class="line" id="L3213"> <span class="tok-kw">return</span> identifier;</span>
<span class="line" id="L3214">}</span>
<span class="line" id="L3215"></span>
<span class="line" id="L3216"><span class="tok-comment">/// Returns the first identifier token, if any.</span></span>
<span class="line" id="L3217"><span class="tok-comment">///</span></span>
<span class="line" id="L3218"><span class="tok-comment">/// PtrIndexPayload <- PIPE ASTERISK? IDENTIFIER (COMMA IDENTIFIER)? PIPE</span></span>
<span class="line" id="L3219"><span class="tok-kw">fn</span> <span class="tok-fn">parsePtrIndexPayload</span>(p: *Parse) !TokenIndex {</span>
<span class="line" id="L3220"> _ = p.eatToken(.pipe) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(TokenIndex, <span class="tok-number">0</span>);</span>
<span class="line" id="L3221"> _ = p.eatToken(.asterisk);</span>
<span class="line" id="L3222"> <span class="tok-kw">const</span> identifier = <span class="tok-kw">try</span> p.expectToken(.identifier);</span>
<span class="line" id="L3223"> <span class="tok-kw">if</span> (p.eatToken(.comma) != <span class="tok-null">null</span>) {</span>
<span class="line" id="L3224"> _ = <span class="tok-kw">try</span> p.expectToken(.identifier);</span>
<span class="line" id="L3225"> }</span>
<span class="line" id="L3226"> _ = <span class="tok-kw">try</span> p.expectToken(.pipe);</span>
<span class="line" id="L3227"> <span class="tok-kw">return</span> identifier;</span>
<span class="line" id="L3228">}</span>
<span class="line" id="L3229"></span>
<span class="line" id="L3230"><span class="tok-comment">/// SwitchProng <- KEYWORD_inline? SwitchCase EQUALRARROW PtrIndexPayload? AssignExpr</span></span>
<span class="line" id="L3231"><span class="tok-comment">///</span></span>
<span class="line" id="L3232"><span class="tok-comment">/// SwitchCase</span></span>
<span class="line" id="L3233"><span class="tok-comment">/// <- SwitchItem (COMMA SwitchItem)* COMMA?</span></span>
<span class="line" id="L3234"><span class="tok-comment">/// / KEYWORD_else</span></span>
<span class="line" id="L3235"><span class="tok-kw">fn</span> <span class="tok-fn">parseSwitchProng</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L3236"> <span class="tok-kw">const</span> scratch_top = p.scratch.items.len;</span>
<span class="line" id="L3237"> <span class="tok-kw">defer</span> p.scratch.shrinkRetainingCapacity(scratch_top);</span>
<span class="line" id="L3238"></span>
<span class="line" id="L3239"> <span class="tok-kw">const</span> is_inline = p.eatToken(.keyword_inline) != <span class="tok-null">null</span>;</span>
<span class="line" id="L3240"></span>
<span class="line" id="L3241"> <span class="tok-kw">if</span> (p.eatToken(.keyword_else) == <span class="tok-null">null</span>) {</span>
<span class="line" id="L3242"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L3243"> <span class="tok-kw">const</span> item = <span class="tok-kw">try</span> p.parseSwitchItem();</span>
<span class="line" id="L3244"> <span class="tok-kw">if</span> (item == <span class="tok-number">0</span>) <span class="tok-kw">break</span>;</span>
<span class="line" id="L3245"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, item);</span>
<span class="line" id="L3246"> <span class="tok-kw">if</span> (p.eatToken(.comma) == <span class="tok-null">null</span>) <span class="tok-kw">break</span>;</span>
<span class="line" id="L3247"> }</span>
<span class="line" id="L3248"> <span class="tok-kw">if</span> (scratch_top == p.scratch.items.len) {</span>
<span class="line" id="L3249"> <span class="tok-kw">if</span> (is_inline) p.tok_i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L3250"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L3251"> }</span>
<span class="line" id="L3252"> }</span>
<span class="line" id="L3253"> <span class="tok-kw">const</span> arrow_token = <span class="tok-kw">try</span> p.expectToken(.equal_angle_bracket_right);</span>
<span class="line" id="L3254"> _ = <span class="tok-kw">try</span> p.parsePtrIndexPayload();</span>
<span class="line" id="L3255"></span>
<span class="line" id="L3256"> <span class="tok-kw">const</span> items = p.scratch.items[scratch_top..];</span>
<span class="line" id="L3257"> <span class="tok-kw">switch</span> (items.len) {</span>
<span class="line" id="L3258"> <span class="tok-number">0</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3259"> .tag = <span class="tok-kw">if</span> (is_inline) .switch_case_inline_one <span class="tok-kw">else</span> .switch_case_one,</span>
<span class="line" id="L3260"> .main_token = arrow_token,</span>
<span class="line" id="L3261"> .data = .{</span>
<span class="line" id="L3262"> .lhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L3263"> .rhs = <span class="tok-kw">try</span> p.expectAssignExpr(),</span>
<span class="line" id="L3264"> },</span>
<span class="line" id="L3265"> }),</span>
<span class="line" id="L3266"> <span class="tok-number">1</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3267"> .tag = <span class="tok-kw">if</span> (is_inline) .switch_case_inline_one <span class="tok-kw">else</span> .switch_case_one,</span>
<span class="line" id="L3268"> .main_token = arrow_token,</span>
<span class="line" id="L3269"> .data = .{</span>
<span class="line" id="L3270"> .lhs = items[<span class="tok-number">0</span>],</span>
<span class="line" id="L3271"> .rhs = <span class="tok-kw">try</span> p.expectAssignExpr(),</span>
<span class="line" id="L3272"> },</span>
<span class="line" id="L3273"> }),</span>
<span class="line" id="L3274"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3275"> .tag = <span class="tok-kw">if</span> (is_inline) .switch_case_inline <span class="tok-kw">else</span> .switch_case,</span>
<span class="line" id="L3276"> .main_token = arrow_token,</span>
<span class="line" id="L3277"> .data = .{</span>
<span class="line" id="L3278"> .lhs = <span class="tok-kw">try</span> p.addExtra(<span class="tok-kw">try</span> p.listToSpan(items)),</span>
<span class="line" id="L3279"> .rhs = <span class="tok-kw">try</span> p.expectAssignExpr(),</span>
<span class="line" id="L3280"> },</span>
<span class="line" id="L3281"> }),</span>
<span class="line" id="L3282"> }</span>
<span class="line" id="L3283">}</span>
<span class="line" id="L3284"></span>
<span class="line" id="L3285"><span class="tok-comment">/// SwitchItem <- Expr (DOT3 Expr)?</span></span>
<span class="line" id="L3286"><span class="tok-kw">fn</span> <span class="tok-fn">parseSwitchItem</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L3287"> <span class="tok-kw">const</span> expr = <span class="tok-kw">try</span> p.parseExpr();</span>
<span class="line" id="L3288"> <span class="tok-kw">if</span> (expr == <span class="tok-number">0</span>) <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L3289"></span>
<span class="line" id="L3290"> <span class="tok-kw">if</span> (p.eatToken(.ellipsis3)) |token| {</span>
<span class="line" id="L3291"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3292"> .tag = .switch_range,</span>
<span class="line" id="L3293"> .main_token = token,</span>
<span class="line" id="L3294"> .data = .{</span>
<span class="line" id="L3295"> .lhs = expr,</span>
<span class="line" id="L3296"> .rhs = <span class="tok-kw">try</span> p.expectExpr(),</span>
<span class="line" id="L3297"> },</span>
<span class="line" id="L3298"> });</span>
<span class="line" id="L3299"> }</span>
<span class="line" id="L3300"> <span class="tok-kw">return</span> expr;</span>
<span class="line" id="L3301">}</span>
<span class="line" id="L3302"></span>
<span class="line" id="L3303"><span class="tok-kw">const</span> PtrModifiers = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L3304"> align_node: Node.Index,</span>
<span class="line" id="L3305"> addrspace_node: Node.Index,</span>
<span class="line" id="L3306"> bit_range_start: Node.Index,</span>
<span class="line" id="L3307"> bit_range_end: Node.Index,</span>
<span class="line" id="L3308">};</span>
<span class="line" id="L3309"></span>
<span class="line" id="L3310"><span class="tok-kw">fn</span> <span class="tok-fn">parsePtrModifiers</span>(p: *Parse) !PtrModifiers {</span>
<span class="line" id="L3311"> <span class="tok-kw">var</span> result: PtrModifiers = .{</span>
<span class="line" id="L3312"> .align_node = <span class="tok-number">0</span>,</span>
<span class="line" id="L3313"> .addrspace_node = <span class="tok-number">0</span>,</span>
<span class="line" id="L3314"> .bit_range_start = <span class="tok-number">0</span>,</span>
<span class="line" id="L3315"> .bit_range_end = <span class="tok-number">0</span>,</span>
<span class="line" id="L3316"> };</span>
<span class="line" id="L3317"> <span class="tok-kw">var</span> saw_const = <span class="tok-null">false</span>;</span>
<span class="line" id="L3318"> <span class="tok-kw">var</span> saw_volatile = <span class="tok-null">false</span>;</span>
<span class="line" id="L3319"> <span class="tok-kw">var</span> saw_allowzero = <span class="tok-null">false</span>;</span>
<span class="line" id="L3320"> <span class="tok-kw">var</span> saw_addrspace = <span class="tok-null">false</span>;</span>
<span class="line" id="L3321"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L3322"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L3323"> .keyword_align => {</span>
<span class="line" id="L3324"> <span class="tok-kw">if</span> (result.align_node != <span class="tok-number">0</span>) {</span>
<span class="line" id="L3325"> <span class="tok-kw">try</span> p.warn(.extra_align_qualifier);</span>
<span class="line" id="L3326"> }</span>
<span class="line" id="L3327"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L3328"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L3329"> result.align_node = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L3330"></span>
<span class="line" id="L3331"> <span class="tok-kw">if</span> (p.eatToken(.colon)) |_| {</span>
<span class="line" id="L3332"> result.bit_range_start = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L3333"> _ = <span class="tok-kw">try</span> p.expectToken(.colon);</span>
<span class="line" id="L3334"> result.bit_range_end = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L3335"> }</span>
<span class="line" id="L3336"></span>
<span class="line" id="L3337"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L3338"> },</span>
<span class="line" id="L3339"> .keyword_const => {</span>
<span class="line" id="L3340"> <span class="tok-kw">if</span> (saw_const) {</span>
<span class="line" id="L3341"> <span class="tok-kw">try</span> p.warn(.extra_const_qualifier);</span>
<span class="line" id="L3342"> }</span>
<span class="line" id="L3343"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L3344"> saw_const = <span class="tok-null">true</span>;</span>
<span class="line" id="L3345"> },</span>
<span class="line" id="L3346"> .keyword_volatile => {</span>
<span class="line" id="L3347"> <span class="tok-kw">if</span> (saw_volatile) {</span>
<span class="line" id="L3348"> <span class="tok-kw">try</span> p.warn(.extra_volatile_qualifier);</span>
<span class="line" id="L3349"> }</span>
<span class="line" id="L3350"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L3351"> saw_volatile = <span class="tok-null">true</span>;</span>
<span class="line" id="L3352"> },</span>
<span class="line" id="L3353"> .keyword_allowzero => {</span>
<span class="line" id="L3354"> <span class="tok-kw">if</span> (saw_allowzero) {</span>
<span class="line" id="L3355"> <span class="tok-kw">try</span> p.warn(.extra_allowzero_qualifier);</span>
<span class="line" id="L3356"> }</span>
<span class="line" id="L3357"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L3358"> saw_allowzero = <span class="tok-null">true</span>;</span>
<span class="line" id="L3359"> },</span>
<span class="line" id="L3360"> .keyword_addrspace => {</span>
<span class="line" id="L3361"> <span class="tok-kw">if</span> (saw_addrspace) {</span>
<span class="line" id="L3362"> <span class="tok-kw">try</span> p.warn(.extra_addrspace_qualifier);</span>
<span class="line" id="L3363"> }</span>
<span class="line" id="L3364"> result.addrspace_node = <span class="tok-kw">try</span> p.parseAddrSpace();</span>
<span class="line" id="L3365"> },</span>
<span class="line" id="L3366"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> result,</span>
<span class="line" id="L3367"> }</span>
<span class="line" id="L3368"> }</span>
<span class="line" id="L3369">}</span>
<span class="line" id="L3370"></span>
<span class="line" id="L3371"><span class="tok-comment">/// SuffixOp</span></span>
<span class="line" id="L3372"><span class="tok-comment">/// <- LBRACKET Expr (DOT2 (Expr? (COLON Expr)?)?)? RBRACKET</span></span>
<span class="line" id="L3373"><span class="tok-comment">/// / DOT IDENTIFIER</span></span>
<span class="line" id="L3374"><span class="tok-comment">/// / DOTASTERISK</span></span>
<span class="line" id="L3375"><span class="tok-comment">/// / DOTQUESTIONMARK</span></span>
<span class="line" id="L3376"><span class="tok-kw">fn</span> <span class="tok-fn">parseSuffixOp</span>(p: *Parse, lhs: Node.Index) !Node.Index {</span>
<span class="line" id="L3377"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L3378"> .l_bracket => {</span>
<span class="line" id="L3379"> <span class="tok-kw">const</span> lbracket = p.nextToken();</span>
<span class="line" id="L3380"> <span class="tok-kw">const</span> index_expr = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L3381"></span>
<span class="line" id="L3382"> <span class="tok-kw">if</span> (p.eatToken(.ellipsis2)) |_| {</span>
<span class="line" id="L3383"> <span class="tok-kw">const</span> end_expr = <span class="tok-kw">try</span> p.parseExpr();</span>
<span class="line" id="L3384"> <span class="tok-kw">if</span> (p.eatToken(.colon)) |_| {</span>
<span class="line" id="L3385"> <span class="tok-kw">const</span> sentinel = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L3386"> _ = <span class="tok-kw">try</span> p.expectToken(.r_bracket);</span>
<span class="line" id="L3387"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3388"> .tag = .slice_sentinel,</span>
<span class="line" id="L3389"> .main_token = lbracket,</span>
<span class="line" id="L3390"> .data = .{</span>
<span class="line" id="L3391"> .lhs = lhs,</span>
<span class="line" id="L3392"> .rhs = <span class="tok-kw">try</span> p.addExtra(Node.SliceSentinel{</span>
<span class="line" id="L3393"> .start = index_expr,</span>
<span class="line" id="L3394"> .end = end_expr,</span>
<span class="line" id="L3395"> .sentinel = sentinel,</span>
<span class="line" id="L3396"> }),</span>
<span class="line" id="L3397"> },</span>
<span class="line" id="L3398"> });</span>
<span class="line" id="L3399"> }</span>
<span class="line" id="L3400"> _ = <span class="tok-kw">try</span> p.expectToken(.r_bracket);</span>
<span class="line" id="L3401"> <span class="tok-kw">if</span> (end_expr == <span class="tok-number">0</span>) {</span>
<span class="line" id="L3402"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3403"> .tag = .slice_open,</span>
<span class="line" id="L3404"> .main_token = lbracket,</span>
<span class="line" id="L3405"> .data = .{</span>
<span class="line" id="L3406"> .lhs = lhs,</span>
<span class="line" id="L3407"> .rhs = index_expr,</span>
<span class="line" id="L3408"> },</span>
<span class="line" id="L3409"> });</span>
<span class="line" id="L3410"> }</span>
<span class="line" id="L3411"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3412"> .tag = .slice,</span>
<span class="line" id="L3413"> .main_token = lbracket,</span>
<span class="line" id="L3414"> .data = .{</span>
<span class="line" id="L3415"> .lhs = lhs,</span>
<span class="line" id="L3416"> .rhs = <span class="tok-kw">try</span> p.addExtra(Node.Slice{</span>
<span class="line" id="L3417"> .start = index_expr,</span>
<span class="line" id="L3418"> .end = end_expr,</span>
<span class="line" id="L3419"> }),</span>
<span class="line" id="L3420"> },</span>
<span class="line" id="L3421"> });</span>
<span class="line" id="L3422"> }</span>
<span class="line" id="L3423"> _ = <span class="tok-kw">try</span> p.expectToken(.r_bracket);</span>
<span class="line" id="L3424"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3425"> .tag = .array_access,</span>
<span class="line" id="L3426"> .main_token = lbracket,</span>
<span class="line" id="L3427"> .data = .{</span>
<span class="line" id="L3428"> .lhs = lhs,</span>
<span class="line" id="L3429"> .rhs = index_expr,</span>
<span class="line" id="L3430"> },</span>
<span class="line" id="L3431"> });</span>
<span class="line" id="L3432"> },</span>
<span class="line" id="L3433"> .period_asterisk => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3434"> .tag = .deref,</span>
<span class="line" id="L3435"> .main_token = p.nextToken(),</span>
<span class="line" id="L3436"> .data = .{</span>
<span class="line" id="L3437"> .lhs = lhs,</span>
<span class="line" id="L3438"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L3439"> },</span>
<span class="line" id="L3440"> }),</span>
<span class="line" id="L3441"> .invalid_periodasterisks => {</span>
<span class="line" id="L3442"> <span class="tok-kw">try</span> p.warn(.asterisk_after_ptr_deref);</span>
<span class="line" id="L3443"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3444"> .tag = .deref,</span>
<span class="line" id="L3445"> .main_token = p.nextToken(),</span>
<span class="line" id="L3446"> .data = .{</span>
<span class="line" id="L3447"> .lhs = lhs,</span>
<span class="line" id="L3448"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L3449"> },</span>
<span class="line" id="L3450"> });</span>
<span class="line" id="L3451"> },</span>
<span class="line" id="L3452"> .period => <span class="tok-kw">switch</span> (p.token_tags[p.tok_i + <span class="tok-number">1</span>]) {</span>
<span class="line" id="L3453"> .identifier => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3454"> .tag = .field_access,</span>
<span class="line" id="L3455"> .main_token = p.nextToken(),</span>
<span class="line" id="L3456"> .data = .{</span>
<span class="line" id="L3457"> .lhs = lhs,</span>
<span class="line" id="L3458"> .rhs = p.nextToken(),</span>
<span class="line" id="L3459"> },</span>
<span class="line" id="L3460"> }),</span>
<span class="line" id="L3461"> .question_mark => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3462"> .tag = .unwrap_optional,</span>
<span class="line" id="L3463"> .main_token = p.nextToken(),</span>
<span class="line" id="L3464"> .data = .{</span>
<span class="line" id="L3465"> .lhs = lhs,</span>
<span class="line" id="L3466"> .rhs = p.nextToken(),</span>
<span class="line" id="L3467"> },</span>
<span class="line" id="L3468"> }),</span>
<span class="line" id="L3469"> .l_brace => {</span>
<span class="line" id="L3470"> <span class="tok-comment">// this a misplaced `.{`, handle the error somewhere else</span>
</span>
<span class="line" id="L3471"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L3472"> },</span>
<span class="line" id="L3473"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L3474"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L3475"> <span class="tok-kw">try</span> p.warn(.expected_suffix_op);</span>
<span class="line" id="L3476"> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L3477"> },</span>
<span class="line" id="L3478"> },</span>
<span class="line" id="L3479"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> null_node,</span>
<span class="line" id="L3480"> }</span>
<span class="line" id="L3481">}</span>
<span class="line" id="L3482"></span>
<span class="line" id="L3483"><span class="tok-comment">/// Caller must have already verified the first token.</span></span>
<span class="line" id="L3484"><span class="tok-comment">///</span></span>
<span class="line" id="L3485"><span class="tok-comment">/// ContainerDeclAuto <- ContainerDeclType LBRACE container_doc_comment? ContainerMembers RBRACE</span></span>
<span class="line" id="L3486"><span class="tok-comment">///</span></span>
<span class="line" id="L3487"><span class="tok-comment">/// ContainerDeclType</span></span>
<span class="line" id="L3488"><span class="tok-comment">/// <- KEYWORD_struct (LPAREN Expr RPAREN)?</span></span>
<span class="line" id="L3489"><span class="tok-comment">/// / KEYWORD_opaque</span></span>
<span class="line" id="L3490"><span class="tok-comment">/// / KEYWORD_enum (LPAREN Expr RPAREN)?</span></span>
<span class="line" id="L3491"><span class="tok-comment">/// / KEYWORD_union (LPAREN (KEYWORD_enum (LPAREN Expr RPAREN)? / Expr) RPAREN)?</span></span>
<span class="line" id="L3492"><span class="tok-kw">fn</span> <span class="tok-fn">parseContainerDeclAuto</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L3493"> <span class="tok-kw">const</span> main_token = p.nextToken();</span>
<span class="line" id="L3494"> <span class="tok-kw">const</span> arg_expr = <span class="tok-kw">switch</span> (p.token_tags[main_token]) {</span>
<span class="line" id="L3495"> .keyword_opaque => null_node,</span>
<span class="line" id="L3496"> .keyword_struct, .keyword_enum => blk: {</span>
<span class="line" id="L3497"> <span class="tok-kw">if</span> (p.eatToken(.l_paren)) |_| {</span>
<span class="line" id="L3498"> <span class="tok-kw">const</span> expr = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L3499"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L3500"> <span class="tok-kw">break</span> :blk expr;</span>
<span class="line" id="L3501"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L3502"> <span class="tok-kw">break</span> :blk null_node;</span>
<span class="line" id="L3503"> }</span>
<span class="line" id="L3504"> },</span>
<span class="line" id="L3505"> .keyword_union => blk: {</span>
<span class="line" id="L3506"> <span class="tok-kw">if</span> (p.eatToken(.l_paren)) |_| {</span>
<span class="line" id="L3507"> <span class="tok-kw">if</span> (p.eatToken(.keyword_enum)) |_| {</span>
<span class="line" id="L3508"> <span class="tok-kw">if</span> (p.eatToken(.l_paren)) |_| {</span>
<span class="line" id="L3509"> <span class="tok-kw">const</span> enum_tag_expr = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L3510"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L3511"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L3512"></span>
<span class="line" id="L3513"> _ = <span class="tok-kw">try</span> p.expectToken(.l_brace);</span>
<span class="line" id="L3514"> <span class="tok-kw">const</span> members = <span class="tok-kw">try</span> p.parseContainerMembers();</span>
<span class="line" id="L3515"> <span class="tok-kw">const</span> members_span = <span class="tok-kw">try</span> members.toSpan(p);</span>
<span class="line" id="L3516"> _ = <span class="tok-kw">try</span> p.expectToken(.r_brace);</span>
<span class="line" id="L3517"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3518"> .tag = <span class="tok-kw">switch</span> (members.trailing) {</span>
<span class="line" id="L3519"> <span class="tok-null">true</span> => .tagged_union_enum_tag_trailing,</span>
<span class="line" id="L3520"> <span class="tok-null">false</span> => .tagged_union_enum_tag,</span>
<span class="line" id="L3521"> },</span>
<span class="line" id="L3522"> .main_token = main_token,</span>
<span class="line" id="L3523"> .data = .{</span>
<span class="line" id="L3524"> .lhs = enum_tag_expr,</span>
<span class="line" id="L3525"> .rhs = <span class="tok-kw">try</span> p.addExtra(members_span),</span>
<span class="line" id="L3526"> },</span>
<span class="line" id="L3527"> });</span>
<span class="line" id="L3528"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L3529"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L3530"></span>
<span class="line" id="L3531"> _ = <span class="tok-kw">try</span> p.expectToken(.l_brace);</span>
<span class="line" id="L3532"> <span class="tok-kw">const</span> members = <span class="tok-kw">try</span> p.parseContainerMembers();</span>
<span class="line" id="L3533"> _ = <span class="tok-kw">try</span> p.expectToken(.r_brace);</span>
<span class="line" id="L3534"> <span class="tok-kw">if</span> (members.len <= <span class="tok-number">2</span>) {</span>
<span class="line" id="L3535"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3536"> .tag = <span class="tok-kw">switch</span> (members.trailing) {</span>
<span class="line" id="L3537"> <span class="tok-null">true</span> => .tagged_union_two_trailing,</span>
<span class="line" id="L3538"> <span class="tok-null">false</span> => .tagged_union_two,</span>
<span class="line" id="L3539"> },</span>
<span class="line" id="L3540"> .main_token = main_token,</span>
<span class="line" id="L3541"> .data = .{</span>
<span class="line" id="L3542"> .lhs = members.lhs,</span>
<span class="line" id="L3543"> .rhs = members.rhs,</span>
<span class="line" id="L3544"> },</span>
<span class="line" id="L3545"> });</span>
<span class="line" id="L3546"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L3547"> <span class="tok-kw">const</span> span = <span class="tok-kw">try</span> members.toSpan(p);</span>
<span class="line" id="L3548"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3549"> .tag = <span class="tok-kw">switch</span> (members.trailing) {</span>
<span class="line" id="L3550"> <span class="tok-null">true</span> => .tagged_union_trailing,</span>
<span class="line" id="L3551"> <span class="tok-null">false</span> => .tagged_union,</span>
<span class="line" id="L3552"> },</span>
<span class="line" id="L3553"> .main_token = main_token,</span>
<span class="line" id="L3554"> .data = .{</span>
<span class="line" id="L3555"> .lhs = span.start,</span>
<span class="line" id="L3556"> .rhs = span.end,</span>
<span class="line" id="L3557"> },</span>
<span class="line" id="L3558"> });</span>
<span class="line" id="L3559"> }</span>
<span class="line" id="L3560"> }</span>
<span class="line" id="L3561"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L3562"> <span class="tok-kw">const</span> expr = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L3563"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L3564"> <span class="tok-kw">break</span> :blk expr;</span>
<span class="line" id="L3565"> }</span>
<span class="line" id="L3566"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L3567"> <span class="tok-kw">break</span> :blk null_node;</span>
<span class="line" id="L3568"> }</span>
<span class="line" id="L3569"> },</span>
<span class="line" id="L3570"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L3571"> p.tok_i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L3572"> <span class="tok-kw">return</span> p.fail(.expected_container);</span>
<span class="line" id="L3573"> },</span>
<span class="line" id="L3574"> };</span>
<span class="line" id="L3575"> _ = <span class="tok-kw">try</span> p.expectToken(.l_brace);</span>
<span class="line" id="L3576"> <span class="tok-kw">const</span> members = <span class="tok-kw">try</span> p.parseContainerMembers();</span>
<span class="line" id="L3577"> _ = <span class="tok-kw">try</span> p.expectToken(.r_brace);</span>
<span class="line" id="L3578"> <span class="tok-kw">if</span> (arg_expr == <span class="tok-number">0</span>) {</span>
<span class="line" id="L3579"> <span class="tok-kw">if</span> (members.len <= <span class="tok-number">2</span>) {</span>
<span class="line" id="L3580"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3581"> .tag = <span class="tok-kw">switch</span> (members.trailing) {</span>
<span class="line" id="L3582"> <span class="tok-null">true</span> => .container_decl_two_trailing,</span>
<span class="line" id="L3583"> <span class="tok-null">false</span> => .container_decl_two,</span>
<span class="line" id="L3584"> },</span>
<span class="line" id="L3585"> .main_token = main_token,</span>
<span class="line" id="L3586"> .data = .{</span>
<span class="line" id="L3587"> .lhs = members.lhs,</span>
<span class="line" id="L3588"> .rhs = members.rhs,</span>
<span class="line" id="L3589"> },</span>
<span class="line" id="L3590"> });</span>
<span class="line" id="L3591"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L3592"> <span class="tok-kw">const</span> span = <span class="tok-kw">try</span> members.toSpan(p);</span>
<span class="line" id="L3593"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3594"> .tag = <span class="tok-kw">switch</span> (members.trailing) {</span>
<span class="line" id="L3595"> <span class="tok-null">true</span> => .container_decl_trailing,</span>
<span class="line" id="L3596"> <span class="tok-null">false</span> => .container_decl,</span>
<span class="line" id="L3597"> },</span>
<span class="line" id="L3598"> .main_token = main_token,</span>
<span class="line" id="L3599"> .data = .{</span>
<span class="line" id="L3600"> .lhs = span.start,</span>
<span class="line" id="L3601"> .rhs = span.end,</span>
<span class="line" id="L3602"> },</span>
<span class="line" id="L3603"> });</span>
<span class="line" id="L3604"> }</span>
<span class="line" id="L3605"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L3606"> <span class="tok-kw">const</span> span = <span class="tok-kw">try</span> members.toSpan(p);</span>
<span class="line" id="L3607"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3608"> .tag = <span class="tok-kw">switch</span> (members.trailing) {</span>
<span class="line" id="L3609"> <span class="tok-null">true</span> => .container_decl_arg_trailing,</span>
<span class="line" id="L3610"> <span class="tok-null">false</span> => .container_decl_arg,</span>
<span class="line" id="L3611"> },</span>
<span class="line" id="L3612"> .main_token = main_token,</span>
<span class="line" id="L3613"> .data = .{</span>
<span class="line" id="L3614"> .lhs = arg_expr,</span>
<span class="line" id="L3615"> .rhs = <span class="tok-kw">try</span> p.addExtra(Node.SubRange{</span>
<span class="line" id="L3616"> .start = span.start,</span>
<span class="line" id="L3617"> .end = span.end,</span>
<span class="line" id="L3618"> }),</span>
<span class="line" id="L3619"> },</span>
<span class="line" id="L3620"> });</span>
<span class="line" id="L3621"> }</span>
<span class="line" id="L3622">}</span>
<span class="line" id="L3623"></span>
<span class="line" id="L3624"><span class="tok-comment">/// Give a helpful error message for those transitioning from</span></span>
<span class="line" id="L3625"><span class="tok-comment">/// C's 'struct Foo {};' to Zig's 'const Foo = struct {};'.</span></span>
<span class="line" id="L3626"><span class="tok-kw">fn</span> <span class="tok-fn">parseCStyleContainer</span>(p: *Parse) Error!<span class="tok-type">bool</span> {</span>
<span class="line" id="L3627"> <span class="tok-kw">const</span> main_token = p.tok_i;</span>
<span class="line" id="L3628"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L3629"> .keyword_enum, .keyword_union, .keyword_struct => {},</span>
<span class="line" id="L3630"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-null">false</span>,</span>
<span class="line" id="L3631"> }</span>
<span class="line" id="L3632"> <span class="tok-kw">const</span> identifier = p.tok_i + <span class="tok-number">1</span>;</span>
<span class="line" id="L3633"> <span class="tok-kw">if</span> (p.token_tags[identifier] != .identifier) <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L3634"> p.tok_i += <span class="tok-number">2</span>;</span>
<span class="line" id="L3635"></span>
<span class="line" id="L3636"> <span class="tok-kw">try</span> p.warnMsg(.{</span>
<span class="line" id="L3637"> .tag = .c_style_container,</span>
<span class="line" id="L3638"> .token = identifier,</span>
<span class="line" id="L3639"> .extra = .{ .expected_tag = p.token_tags[main_token] },</span>
<span class="line" id="L3640"> });</span>
<span class="line" id="L3641"> <span class="tok-kw">try</span> p.warnMsg(.{</span>
<span class="line" id="L3642"> .tag = .zig_style_container,</span>
<span class="line" id="L3643"> .is_note = <span class="tok-null">true</span>,</span>
<span class="line" id="L3644"> .token = identifier,</span>
<span class="line" id="L3645"> .extra = .{ .expected_tag = p.token_tags[main_token] },</span>
<span class="line" id="L3646"> });</span>
<span class="line" id="L3647"></span>
<span class="line" id="L3648"> _ = <span class="tok-kw">try</span> p.expectToken(.l_brace);</span>
<span class="line" id="L3649"> _ = <span class="tok-kw">try</span> p.parseContainerMembers();</span>
<span class="line" id="L3650"> _ = <span class="tok-kw">try</span> p.expectToken(.r_brace);</span>
<span class="line" id="L3651"> <span class="tok-kw">try</span> p.expectSemicolon(.expected_semi_after_decl, <span class="tok-null">true</span>);</span>
<span class="line" id="L3652"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L3653">}</span>
<span class="line" id="L3654"></span>
<span class="line" id="L3655"><span class="tok-comment">/// Holds temporary data until we are ready to construct the full ContainerDecl AST node.</span></span>
<span class="line" id="L3656"><span class="tok-comment">///</span></span>
<span class="line" id="L3657"><span class="tok-comment">/// ByteAlign <- KEYWORD_align LPAREN Expr RPAREN</span></span>
<span class="line" id="L3658"><span class="tok-kw">fn</span> <span class="tok-fn">parseByteAlign</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L3659"> _ = p.eatToken(.keyword_align) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L3660"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L3661"> <span class="tok-kw">const</span> expr = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L3662"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L3663"> <span class="tok-kw">return</span> expr;</span>
<span class="line" id="L3664">}</span>
<span class="line" id="L3665"></span>
<span class="line" id="L3666"><span class="tok-comment">/// SwitchProngList <- (SwitchProng COMMA)* SwitchProng?</span></span>
<span class="line" id="L3667"><span class="tok-kw">fn</span> <span class="tok-fn">parseSwitchProngList</span>(p: *Parse) !Node.SubRange {</span>
<span class="line" id="L3668"> <span class="tok-kw">const</span> scratch_top = p.scratch.items.len;</span>
<span class="line" id="L3669"> <span class="tok-kw">defer</span> p.scratch.shrinkRetainingCapacity(scratch_top);</span>
<span class="line" id="L3670"></span>
<span class="line" id="L3671"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L3672"> <span class="tok-kw">const</span> item = <span class="tok-kw">try</span> parseSwitchProng(p);</span>
<span class="line" id="L3673"> <span class="tok-kw">if</span> (item == <span class="tok-number">0</span>) <span class="tok-kw">break</span>;</span>
<span class="line" id="L3674"></span>
<span class="line" id="L3675"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, item);</span>
<span class="line" id="L3676"></span>
<span class="line" id="L3677"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L3678"> .comma => p.tok_i += <span class="tok-number">1</span>,</span>
<span class="line" id="L3679"> <span class="tok-comment">// All possible delimiters.</span>
</span>
<span class="line" id="L3680"> .colon, .r_paren, .r_brace, .r_bracket => <span class="tok-kw">break</span>,</span>
<span class="line" id="L3681"> <span class="tok-comment">// Likely just a missing comma; give error but continue parsing.</span>
</span>
<span class="line" id="L3682"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> p.warn(.expected_comma_after_switch_prong),</span>
<span class="line" id="L3683"> }</span>
<span class="line" id="L3684"> }</span>
<span class="line" id="L3685"> <span class="tok-kw">return</span> p.listToSpan(p.scratch.items[scratch_top..]);</span>
<span class="line" id="L3686">}</span>
<span class="line" id="L3687"></span>
<span class="line" id="L3688"><span class="tok-comment">/// ParamDeclList <- (ParamDecl COMMA)* ParamDecl?</span></span>
<span class="line" id="L3689"><span class="tok-kw">fn</span> <span class="tok-fn">parseParamDeclList</span>(p: *Parse) !SmallSpan {</span>
<span class="line" id="L3690"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L3691"> <span class="tok-kw">const</span> scratch_top = p.scratch.items.len;</span>
<span class="line" id="L3692"> <span class="tok-kw">defer</span> p.scratch.shrinkRetainingCapacity(scratch_top);</span>
<span class="line" id="L3693"> <span class="tok-kw">var</span> varargs: <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) { none, seen, nonfinal: TokenIndex } = .none;</span>
<span class="line" id="L3694"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L3695"> <span class="tok-kw">if</span> (p.eatToken(.r_paren)) |_| <span class="tok-kw">break</span>;</span>
<span class="line" id="L3696"> <span class="tok-kw">if</span> (varargs == .seen) varargs = .{ .nonfinal = p.tok_i };</span>
<span class="line" id="L3697"> <span class="tok-kw">const</span> param = <span class="tok-kw">try</span> p.expectParamDecl();</span>
<span class="line" id="L3698"> <span class="tok-kw">if</span> (param != <span class="tok-number">0</span>) {</span>
<span class="line" id="L3699"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, param);</span>
<span class="line" id="L3700"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (p.token_tags[p.tok_i - <span class="tok-number">1</span>] == .ellipsis3) {</span>
<span class="line" id="L3701"> <span class="tok-kw">if</span> (varargs == .none) varargs = .seen;</span>
<span class="line" id="L3702"> }</span>
<span class="line" id="L3703"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L3704"> .comma => p.tok_i += <span class="tok-number">1</span>,</span>
<span class="line" id="L3705"> .r_paren => {</span>
<span class="line" id="L3706"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L3707"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L3708"> },</span>
<span class="line" id="L3709"> .colon, .r_brace, .r_bracket => <span class="tok-kw">return</span> p.failExpected(.r_paren),</span>
<span class="line" id="L3710"> <span class="tok-comment">// Likely just a missing comma; give error but continue parsing.</span>
</span>
<span class="line" id="L3711"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> p.warn(.expected_comma_after_param),</span>
<span class="line" id="L3712"> }</span>
<span class="line" id="L3713"> }</span>
<span class="line" id="L3714"> <span class="tok-kw">if</span> (varargs == .nonfinal) {</span>
<span class="line" id="L3715"> <span class="tok-kw">try</span> p.warnMsg(.{ .tag = .varargs_nonfinal, .token = varargs.nonfinal });</span>
<span class="line" id="L3716"> }</span>
<span class="line" id="L3717"> <span class="tok-kw">const</span> params = p.scratch.items[scratch_top..];</span>
<span class="line" id="L3718"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (params.len) {</span>
<span class="line" id="L3719"> <span class="tok-number">0</span> => SmallSpan{ .zero_or_one = <span class="tok-number">0</span> },</span>
<span class="line" id="L3720"> <span class="tok-number">1</span> => SmallSpan{ .zero_or_one = params[<span class="tok-number">0</span>] },</span>
<span class="line" id="L3721"> <span class="tok-kw">else</span> => SmallSpan{ .multi = <span class="tok-kw">try</span> p.listToSpan(params) },</span>
<span class="line" id="L3722"> };</span>
<span class="line" id="L3723">}</span>
<span class="line" id="L3724"></span>
<span class="line" id="L3725"><span class="tok-comment">/// FnCallArguments <- LPAREN ExprList RPAREN</span></span>
<span class="line" id="L3726"><span class="tok-comment">///</span></span>
<span class="line" id="L3727"><span class="tok-comment">/// ExprList <- (Expr COMMA)* Expr?</span></span>
<span class="line" id="L3728"><span class="tok-kw">fn</span> <span class="tok-fn">parseBuiltinCall</span>(p: *Parse) !Node.Index {</span>
<span class="line" id="L3729"> <span class="tok-kw">const</span> builtin_token = p.assertToken(.builtin);</span>
<span class="line" id="L3730"> <span class="tok-kw">if</span> (p.token_tags[p.nextToken()] != .l_paren) {</span>
<span class="line" id="L3731"> p.tok_i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L3732"> <span class="tok-kw">try</span> p.warn(.expected_param_list);</span>
<span class="line" id="L3733"> <span class="tok-comment">// Pretend this was an identifier so we can continue parsing.</span>
</span>
<span class="line" id="L3734"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3735"> .tag = .identifier,</span>
<span class="line" id="L3736"> .main_token = builtin_token,</span>
<span class="line" id="L3737"> .data = .{</span>
<span class="line" id="L3738"> .lhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L3739"> .rhs = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L3740"> },</span>
<span class="line" id="L3741"> });</span>
<span class="line" id="L3742"> }</span>
<span class="line" id="L3743"> <span class="tok-kw">const</span> scratch_top = p.scratch.items.len;</span>
<span class="line" id="L3744"> <span class="tok-kw">defer</span> p.scratch.shrinkRetainingCapacity(scratch_top);</span>
<span class="line" id="L3745"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L3746"> <span class="tok-kw">if</span> (p.eatToken(.r_paren)) |_| <span class="tok-kw">break</span>;</span>
<span class="line" id="L3747"> <span class="tok-kw">const</span> param = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L3748"> <span class="tok-kw">try</span> p.scratch.append(p.gpa, param);</span>
<span class="line" id="L3749"> <span class="tok-kw">switch</span> (p.token_tags[p.tok_i]) {</span>
<span class="line" id="L3750"> .comma => p.tok_i += <span class="tok-number">1</span>,</span>
<span class="line" id="L3751"> .r_paren => {</span>
<span class="line" id="L3752"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L3753"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L3754"> },</span>
<span class="line" id="L3755"> <span class="tok-comment">// Likely just a missing comma; give error but continue parsing.</span>
</span>
<span class="line" id="L3756"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> p.warn(.expected_comma_after_arg),</span>
<span class="line" id="L3757"> }</span>
<span class="line" id="L3758"> }</span>
<span class="line" id="L3759"> <span class="tok-kw">const</span> comma = (p.token_tags[p.tok_i - <span class="tok-number">2</span>] == .comma);</span>
<span class="line" id="L3760"> <span class="tok-kw">const</span> params = p.scratch.items[scratch_top..];</span>
<span class="line" id="L3761"> <span class="tok-kw">switch</span> (params.len) {</span>
<span class="line" id="L3762"> <span class="tok-number">0</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3763"> .tag = .builtin_call_two,</span>
<span class="line" id="L3764"> .main_token = builtin_token,</span>
<span class="line" id="L3765"> .data = .{</span>
<span class="line" id="L3766"> .lhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L3767"> .rhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L3768"> },</span>
<span class="line" id="L3769"> }),</span>
<span class="line" id="L3770"> <span class="tok-number">1</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3771"> .tag = <span class="tok-kw">if</span> (comma) .builtin_call_two_comma <span class="tok-kw">else</span> .builtin_call_two,</span>
<span class="line" id="L3772"> .main_token = builtin_token,</span>
<span class="line" id="L3773"> .data = .{</span>
<span class="line" id="L3774"> .lhs = params[<span class="tok-number">0</span>],</span>
<span class="line" id="L3775"> .rhs = <span class="tok-number">0</span>,</span>
<span class="line" id="L3776"> },</span>
<span class="line" id="L3777"> }),</span>
<span class="line" id="L3778"> <span class="tok-number">2</span> => <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3779"> .tag = <span class="tok-kw">if</span> (comma) .builtin_call_two_comma <span class="tok-kw">else</span> .builtin_call_two,</span>
<span class="line" id="L3780"> .main_token = builtin_token,</span>
<span class="line" id="L3781"> .data = .{</span>
<span class="line" id="L3782"> .lhs = params[<span class="tok-number">0</span>],</span>
<span class="line" id="L3783"> .rhs = params[<span class="tok-number">1</span>],</span>
<span class="line" id="L3784"> },</span>
<span class="line" id="L3785"> }),</span>
<span class="line" id="L3786"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L3787"> <span class="tok-kw">const</span> span = <span class="tok-kw">try</span> p.listToSpan(params);</span>
<span class="line" id="L3788"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3789"> .tag = <span class="tok-kw">if</span> (comma) .builtin_call_comma <span class="tok-kw">else</span> .builtin_call,</span>
<span class="line" id="L3790"> .main_token = builtin_token,</span>
<span class="line" id="L3791"> .data = .{</span>
<span class="line" id="L3792"> .lhs = span.start,</span>
<span class="line" id="L3793"> .rhs = span.end,</span>
<span class="line" id="L3794"> },</span>
<span class="line" id="L3795"> });</span>
<span class="line" id="L3796"> },</span>
<span class="line" id="L3797"> }</span>
<span class="line" id="L3798">}</span>
<span class="line" id="L3799"></span>
<span class="line" id="L3800"><span class="tok-comment">/// IfPrefix <- KEYWORD_if LPAREN Expr RPAREN PtrPayload?</span></span>
<span class="line" id="L3801"><span class="tok-kw">fn</span> <span class="tok-fn">parseIf</span>(p: *Parse, <span class="tok-kw">comptime</span> bodyParseFn: <span class="tok-kw">fn</span> (p: *Parse) Error!Node.Index) !Node.Index {</span>
<span class="line" id="L3802"> <span class="tok-kw">const</span> if_token = p.eatToken(.keyword_if) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> null_node;</span>
<span class="line" id="L3803"> _ = <span class="tok-kw">try</span> p.expectToken(.l_paren);</span>
<span class="line" id="L3804"> <span class="tok-kw">const</span> condition = <span class="tok-kw">try</span> p.expectExpr();</span>
<span class="line" id="L3805"> _ = <span class="tok-kw">try</span> p.expectToken(.r_paren);</span>
<span class="line" id="L3806"> _ = <span class="tok-kw">try</span> p.parsePtrPayload();</span>
<span class="line" id="L3807"></span>
<span class="line" id="L3808"> <span class="tok-kw">const</span> then_expr = <span class="tok-kw">try</span> bodyParseFn(p);</span>
<span class="line" id="L3809"> assert(then_expr != <span class="tok-number">0</span>);</span>
<span class="line" id="L3810"></span>
<span class="line" id="L3811"> _ = p.eatToken(.keyword_else) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3812"> .tag = .if_simple,</span>
<span class="line" id="L3813"> .main_token = if_token,</span>
<span class="line" id="L3814"> .data = .{</span>
<span class="line" id="L3815"> .lhs = condition,</span>
<span class="line" id="L3816"> .rhs = then_expr,</span>
<span class="line" id="L3817"> },</span>
<span class="line" id="L3818"> });</span>
<span class="line" id="L3819"> _ = <span class="tok-kw">try</span> p.parsePayload();</span>
<span class="line" id="L3820"> <span class="tok-kw">const</span> else_expr = <span class="tok-kw">try</span> bodyParseFn(p);</span>
<span class="line" id="L3821"> assert(then_expr != <span class="tok-number">0</span>);</span>
<span class="line" id="L3822"></span>
<span class="line" id="L3823"> <span class="tok-kw">return</span> p.addNode(.{</span>
<span class="line" id="L3824"> .tag = .@"if",</span>
<span class="line" id="L3825"> .main_token = if_token,</span>
<span class="line" id="L3826"> .data = .{</span>
<span class="line" id="L3827"> .lhs = condition,</span>
<span class="line" id="L3828"> .rhs = <span class="tok-kw">try</span> p.addExtra(Node.If{</span>
<span class="line" id="L3829"> .then_expr = then_expr,</span>
<span class="line" id="L3830"> .else_expr = else_expr,</span>
<span class="line" id="L3831"> }),</span>
<span class="line" id="L3832"> },</span>
<span class="line" id="L3833"> });</span>
<span class="line" id="L3834">}</span>
<span class="line" id="L3835"></span>
<span class="line" id="L3836"><span class="tok-comment">/// Skips over doc comment tokens. Returns the first one, if any.</span></span>
<span class="line" id="L3837"><span class="tok-kw">fn</span> <span class="tok-fn">eatDocComments</span>(p: *Parse) !?TokenIndex {</span>
<span class="line" id="L3838"> <span class="tok-kw">if</span> (p.eatToken(.doc_comment)) |tok| {</span>
<span class="line" id="L3839"> <span class="tok-kw">var</span> first_line = tok;</span>
<span class="line" id="L3840"> <span class="tok-kw">if</span> (tok > <span class="tok-number">0</span> <span class="tok-kw">and</span> tokensOnSameLine(p, tok - <span class="tok-number">1</span>, tok)) {</span>
<span class="line" id="L3841"> <span class="tok-kw">try</span> p.warnMsg(.{</span>
<span class="line" id="L3842"> .tag = .same_line_doc_comment,</span>
<span class="line" id="L3843"> .token = tok,</span>
<span class="line" id="L3844"> });</span>
<span class="line" id="L3845"> first_line = p.eatToken(.doc_comment) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L3846"> }</span>
<span class="line" id="L3847"> <span class="tok-kw">while</span> (p.eatToken(.doc_comment)) |_| {}</span>
<span class="line" id="L3848"> <span class="tok-kw">return</span> first_line;</span>
<span class="line" id="L3849"> }</span>
<span class="line" id="L3850"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L3851">}</span>
<span class="line" id="L3852"></span>
<span class="line" id="L3853"><span class="tok-kw">fn</span> <span class="tok-fn">tokensOnSameLine</span>(p: *Parse, token1: TokenIndex, token2: TokenIndex) <span class="tok-type">bool</span> {</span>
<span class="line" id="L3854"> <span class="tok-kw">return</span> std.mem.indexOfScalar(<span class="tok-type">u8</span>, p.source[p.token_starts[token1]..p.token_starts[token2]], <span class="tok-str">'\n'</span>) == <span class="tok-null">null</span>;</span>
<span class="line" id="L3855">}</span>
<span class="line" id="L3856"></span>
<span class="line" id="L3857"><span class="tok-kw">fn</span> <span class="tok-fn">eatToken</span>(p: *Parse, tag: Token.Tag) ?TokenIndex {</span>
<span class="line" id="L3858"> <span class="tok-kw">return</span> <span class="tok-kw">if</span> (p.token_tags[p.tok_i] == tag) p.nextToken() <span class="tok-kw">else</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L3859">}</span>
<span class="line" id="L3860"></span>
<span class="line" id="L3861"><span class="tok-kw">fn</span> <span class="tok-fn">assertToken</span>(p: *Parse, tag: Token.Tag) TokenIndex {</span>
<span class="line" id="L3862"> <span class="tok-kw">const</span> token = p.nextToken();</span>
<span class="line" id="L3863"> assert(p.token_tags[token] == tag);</span>
<span class="line" id="L3864"> <span class="tok-kw">return</span> token;</span>
<span class="line" id="L3865">}</span>
<span class="line" id="L3866"></span>
<span class="line" id="L3867"><span class="tok-kw">fn</span> <span class="tok-fn">expectToken</span>(p: *Parse, tag: Token.Tag) Error!TokenIndex {</span>
<span class="line" id="L3868"> <span class="tok-kw">if</span> (p.token_tags[p.tok_i] != tag) {</span>
<span class="line" id="L3869"> <span class="tok-kw">return</span> p.failMsg(.{</span>
<span class="line" id="L3870"> .tag = .expected_token,</span>
<span class="line" id="L3871"> .token = p.tok_i,</span>
<span class="line" id="L3872"> .extra = .{ .expected_tag = tag },</span>
<span class="line" id="L3873"> });</span>
<span class="line" id="L3874"> }</span>
<span class="line" id="L3875"> <span class="tok-kw">return</span> p.nextToken();</span>
<span class="line" id="L3876">}</span>
<span class="line" id="L3877"></span>
<span class="line" id="L3878"><span class="tok-kw">fn</span> <span class="tok-fn">expectSemicolon</span>(p: *Parse, error_tag: AstError.Tag, recoverable: <span class="tok-type">bool</span>) Error!<span class="tok-type">void</span> {</span>
<span class="line" id="L3879"> <span class="tok-kw">if</span> (p.token_tags[p.tok_i] == .semicolon) {</span>
<span class="line" id="L3880"> _ = p.nextToken();</span>
<span class="line" id="L3881"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L3882"> }</span>
<span class="line" id="L3883"> <span class="tok-kw">try</span> p.warn(error_tag);</span>
<span class="line" id="L3884"> <span class="tok-kw">if</span> (!recoverable) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ParseError;</span>
<span class="line" id="L3885">}</span>
<span class="line" id="L3886"></span>
<span class="line" id="L3887"><span class="tok-kw">fn</span> <span class="tok-fn">nextToken</span>(p: *Parse) TokenIndex {</span>
<span class="line" id="L3888"> <span class="tok-kw">const</span> result = p.tok_i;</span>
<span class="line" id="L3889"> p.tok_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L3890"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L3891">}</span>
<span class="line" id="L3892"></span>
<span class="line" id="L3893"><span class="tok-kw">const</span> null_node: Node.Index = <span class="tok-number">0</span>;</span>
<span class="line" id="L3894"></span>
<span class="line" id="L3895"><span class="tok-kw">const</span> Parse = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L3896"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L3897"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L3898"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L3899"><span class="tok-kw">const</span> Ast = std.zig.Ast;</span>
<span class="line" id="L3900"><span class="tok-kw">const</span> Node = Ast.Node;</span>
<span class="line" id="L3901"><span class="tok-kw">const</span> AstError = Ast.Error;</span>
<span class="line" id="L3902"><span class="tok-kw">const</span> TokenIndex = Ast.TokenIndex;</span>
<span class="line" id="L3903"><span class="tok-kw">const</span> Token = std.zig.Token;</span>
<span class="line" id="L3904"></span>
<span class="line" id="L3905"><span class="tok-kw">test</span> {</span>
<span class="line" id="L3906"> _ = <span class="tok-builtin">@import</span>(<span class="tok-str">"parser_test.zig"</span>);</span>
<span class="line" id="L3907">}</span>
<span class="line" id="L3908"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Token = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L4"> tag: Tag,</span>
<span class="line" id="L5"> loc: Loc,</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Loc = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L8"> start: <span class="tok-type">usize</span>,</span>
<span class="line" id="L9"> end: <span class="tok-type">usize</span>,</span>
<span class="line" id="L10"> };</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> keywords = std.ComptimeStringMap(Tag, .{</span>
<span class="line" id="L13"> .{ <span class="tok-str">"addrspace"</span>, .keyword_addrspace },</span>
<span class="line" id="L14"> .{ <span class="tok-str">"align"</span>, .keyword_align },</span>
<span class="line" id="L15"> .{ <span class="tok-str">"allowzero"</span>, .keyword_allowzero },</span>
<span class="line" id="L16"> .{ <span class="tok-str">"and"</span>, .keyword_and },</span>
<span class="line" id="L17"> .{ <span class="tok-str">"anyframe"</span>, .keyword_anyframe },</span>
<span class="line" id="L18"> .{ <span class="tok-str">"anytype"</span>, .keyword_anytype },</span>
<span class="line" id="L19"> .{ <span class="tok-str">"asm"</span>, .keyword_asm },</span>
<span class="line" id="L20"> .{ <span class="tok-str">"async"</span>, .keyword_async },</span>
<span class="line" id="L21"> .{ <span class="tok-str">"await"</span>, .keyword_await },</span>
<span class="line" id="L22"> .{ <span class="tok-str">"break"</span>, .keyword_break },</span>
<span class="line" id="L23"> .{ <span class="tok-str">"callconv"</span>, .keyword_callconv },</span>
<span class="line" id="L24"> .{ <span class="tok-str">"catch"</span>, .keyword_catch },</span>
<span class="line" id="L25"> .{ <span class="tok-str">"comptime"</span>, .keyword_comptime },</span>
<span class="line" id="L26"> .{ <span class="tok-str">"const"</span>, .keyword_const },</span>
<span class="line" id="L27"> .{ <span class="tok-str">"continue"</span>, .keyword_continue },</span>
<span class="line" id="L28"> .{ <span class="tok-str">"defer"</span>, .keyword_defer },</span>
<span class="line" id="L29"> .{ <span class="tok-str">"else"</span>, .keyword_else },</span>
<span class="line" id="L30"> .{ <span class="tok-str">"enum"</span>, .keyword_enum },</span>
<span class="line" id="L31"> .{ <span class="tok-str">"errdefer"</span>, .keyword_errdefer },</span>
<span class="line" id="L32"> .{ <span class="tok-str">"error"</span>, .keyword_error },</span>
<span class="line" id="L33"> .{ <span class="tok-str">"export"</span>, .keyword_export },</span>
<span class="line" id="L34"> .{ <span class="tok-str">"extern"</span>, .keyword_extern },</span>
<span class="line" id="L35"> .{ <span class="tok-str">"fn"</span>, .keyword_fn },</span>
<span class="line" id="L36"> .{ <span class="tok-str">"for"</span>, .keyword_for },</span>
<span class="line" id="L37"> .{ <span class="tok-str">"if"</span>, .keyword_if },</span>
<span class="line" id="L38"> .{ <span class="tok-str">"inline"</span>, .keyword_inline },</span>
<span class="line" id="L39"> .{ <span class="tok-str">"noalias"</span>, .keyword_noalias },</span>
<span class="line" id="L40"> .{ <span class="tok-str">"noinline"</span>, .keyword_noinline },</span>
<span class="line" id="L41"> .{ <span class="tok-str">"nosuspend"</span>, .keyword_nosuspend },</span>
<span class="line" id="L42"> .{ <span class="tok-str">"opaque"</span>, .keyword_opaque },</span>
<span class="line" id="L43"> .{ <span class="tok-str">"or"</span>, .keyword_or },</span>
<span class="line" id="L44"> .{ <span class="tok-str">"orelse"</span>, .keyword_orelse },</span>
<span class="line" id="L45"> .{ <span class="tok-str">"packed"</span>, .keyword_packed },</span>
<span class="line" id="L46"> .{ <span class="tok-str">"pub"</span>, .keyword_pub },</span>
<span class="line" id="L47"> .{ <span class="tok-str">"resume"</span>, .keyword_resume },</span>
<span class="line" id="L48"> .{ <span class="tok-str">"return"</span>, .keyword_return },</span>
<span class="line" id="L49"> .{ <span class="tok-str">"linksection"</span>, .keyword_linksection },</span>
<span class="line" id="L50"> .{ <span class="tok-str">"struct"</span>, .keyword_struct },</span>
<span class="line" id="L51"> .{ <span class="tok-str">"suspend"</span>, .keyword_suspend },</span>
<span class="line" id="L52"> .{ <span class="tok-str">"switch"</span>, .keyword_switch },</span>
<span class="line" id="L53"> .{ <span class="tok-str">"test"</span>, .keyword_test },</span>
<span class="line" id="L54"> .{ <span class="tok-str">"threadlocal"</span>, .keyword_threadlocal },</span>
<span class="line" id="L55"> .{ <span class="tok-str">"try"</span>, .keyword_try },</span>
<span class="line" id="L56"> .{ <span class="tok-str">"union"</span>, .keyword_union },</span>
<span class="line" id="L57"> .{ <span class="tok-str">"unreachable"</span>, .keyword_unreachable },</span>
<span class="line" id="L58"> .{ <span class="tok-str">"usingnamespace"</span>, .keyword_usingnamespace },</span>
<span class="line" id="L59"> .{ <span class="tok-str">"var"</span>, .keyword_var },</span>
<span class="line" id="L60"> .{ <span class="tok-str">"volatile"</span>, .keyword_volatile },</span>
<span class="line" id="L61"> .{ <span class="tok-str">"while"</span>, .keyword_while },</span>
<span class="line" id="L62"> });</span>
<span class="line" id="L63"></span>
<span class="line" id="L64"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getKeyword</span>(bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) ?Tag {</span>
<span class="line" id="L65"> <span class="tok-kw">return</span> keywords.get(bytes);</span>
<span class="line" id="L66"> }</span>
<span class="line" id="L67"></span>
<span class="line" id="L68"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Tag = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L69"> invalid,</span>
<span class="line" id="L70"> invalid_periodasterisks,</span>
<span class="line" id="L71"> identifier,</span>
<span class="line" id="L72"> string_literal,</span>
<span class="line" id="L73"> multiline_string_literal_line,</span>
<span class="line" id="L74"> char_literal,</span>
<span class="line" id="L75"> eof,</span>
<span class="line" id="L76"> builtin,</span>
<span class="line" id="L77"> bang,</span>
<span class="line" id="L78"> pipe,</span>
<span class="line" id="L79"> pipe_pipe,</span>
<span class="line" id="L80"> pipe_equal,</span>
<span class="line" id="L81"> equal,</span>
<span class="line" id="L82"> equal_equal,</span>
<span class="line" id="L83"> equal_angle_bracket_right,</span>
<span class="line" id="L84"> bang_equal,</span>
<span class="line" id="L85"> l_paren,</span>
<span class="line" id="L86"> r_paren,</span>
<span class="line" id="L87"> semicolon,</span>
<span class="line" id="L88"> percent,</span>
<span class="line" id="L89"> percent_equal,</span>
<span class="line" id="L90"> l_brace,</span>
<span class="line" id="L91"> r_brace,</span>
<span class="line" id="L92"> l_bracket,</span>
<span class="line" id="L93"> r_bracket,</span>
<span class="line" id="L94"> period,</span>
<span class="line" id="L95"> period_asterisk,</span>
<span class="line" id="L96"> ellipsis2,</span>
<span class="line" id="L97"> ellipsis3,</span>
<span class="line" id="L98"> caret,</span>
<span class="line" id="L99"> caret_equal,</span>
<span class="line" id="L100"> plus,</span>
<span class="line" id="L101"> plus_plus,</span>
<span class="line" id="L102"> plus_equal,</span>
<span class="line" id="L103"> plus_percent,</span>
<span class="line" id="L104"> plus_percent_equal,</span>
<span class="line" id="L105"> plus_pipe,</span>
<span class="line" id="L106"> plus_pipe_equal,</span>
<span class="line" id="L107"> minus,</span>
<span class="line" id="L108"> minus_equal,</span>
<span class="line" id="L109"> minus_percent,</span>
<span class="line" id="L110"> minus_percent_equal,</span>
<span class="line" id="L111"> minus_pipe,</span>
<span class="line" id="L112"> minus_pipe_equal,</span>
<span class="line" id="L113"> asterisk,</span>
<span class="line" id="L114"> asterisk_equal,</span>
<span class="line" id="L115"> asterisk_asterisk,</span>
<span class="line" id="L116"> asterisk_percent,</span>
<span class="line" id="L117"> asterisk_percent_equal,</span>
<span class="line" id="L118"> asterisk_pipe,</span>
<span class="line" id="L119"> asterisk_pipe_equal,</span>
<span class="line" id="L120"> arrow,</span>
<span class="line" id="L121"> colon,</span>
<span class="line" id="L122"> slash,</span>
<span class="line" id="L123"> slash_equal,</span>
<span class="line" id="L124"> comma,</span>
<span class="line" id="L125"> ampersand,</span>
<span class="line" id="L126"> ampersand_equal,</span>
<span class="line" id="L127"> question_mark,</span>
<span class="line" id="L128"> angle_bracket_left,</span>
<span class="line" id="L129"> angle_bracket_left_equal,</span>
<span class="line" id="L130"> angle_bracket_angle_bracket_left,</span>
<span class="line" id="L131"> angle_bracket_angle_bracket_left_equal,</span>
<span class="line" id="L132"> angle_bracket_angle_bracket_left_pipe,</span>
<span class="line" id="L133"> angle_bracket_angle_bracket_left_pipe_equal,</span>
<span class="line" id="L134"> angle_bracket_right,</span>
<span class="line" id="L135"> angle_bracket_right_equal,</span>
<span class="line" id="L136"> angle_bracket_angle_bracket_right,</span>
<span class="line" id="L137"> angle_bracket_angle_bracket_right_equal,</span>
<span class="line" id="L138"> tilde,</span>
<span class="line" id="L139"> number_literal,</span>
<span class="line" id="L140"> doc_comment,</span>
<span class="line" id="L141"> container_doc_comment,</span>
<span class="line" id="L142"> keyword_addrspace,</span>
<span class="line" id="L143"> keyword_align,</span>
<span class="line" id="L144"> keyword_allowzero,</span>
<span class="line" id="L145"> keyword_and,</span>
<span class="line" id="L146"> keyword_anyframe,</span>
<span class="line" id="L147"> keyword_anytype,</span>
<span class="line" id="L148"> keyword_asm,</span>
<span class="line" id="L149"> keyword_async,</span>
<span class="line" id="L150"> keyword_await,</span>
<span class="line" id="L151"> keyword_break,</span>
<span class="line" id="L152"> keyword_callconv,</span>
<span class="line" id="L153"> keyword_catch,</span>
<span class="line" id="L154"> keyword_comptime,</span>
<span class="line" id="L155"> keyword_const,</span>
<span class="line" id="L156"> keyword_continue,</span>
<span class="line" id="L157"> keyword_defer,</span>
<span class="line" id="L158"> keyword_else,</span>
<span class="line" id="L159"> keyword_enum,</span>
<span class="line" id="L160"> keyword_errdefer,</span>
<span class="line" id="L161"> keyword_error,</span>
<span class="line" id="L162"> keyword_export,</span>
<span class="line" id="L163"> keyword_extern,</span>
<span class="line" id="L164"> keyword_fn,</span>
<span class="line" id="L165"> keyword_for,</span>
<span class="line" id="L166"> keyword_if,</span>
<span class="line" id="L167"> keyword_inline,</span>
<span class="line" id="L168"> keyword_noalias,</span>
<span class="line" id="L169"> keyword_noinline,</span>
<span class="line" id="L170"> keyword_nosuspend,</span>
<span class="line" id="L171"> keyword_opaque,</span>
<span class="line" id="L172"> keyword_or,</span>
<span class="line" id="L173"> keyword_orelse,</span>
<span class="line" id="L174"> keyword_packed,</span>
<span class="line" id="L175"> keyword_pub,</span>
<span class="line" id="L176"> keyword_resume,</span>
<span class="line" id="L177"> keyword_return,</span>
<span class="line" id="L178"> keyword_linksection,</span>
<span class="line" id="L179"> keyword_struct,</span>
<span class="line" id="L180"> keyword_suspend,</span>
<span class="line" id="L181"> keyword_switch,</span>
<span class="line" id="L182"> keyword_test,</span>
<span class="line" id="L183"> keyword_threadlocal,</span>
<span class="line" id="L184"> keyword_try,</span>
<span class="line" id="L185"> keyword_union,</span>
<span class="line" id="L186"> keyword_unreachable,</span>
<span class="line" id="L187"> keyword_usingnamespace,</span>
<span class="line" id="L188"> keyword_var,</span>
<span class="line" id="L189"> keyword_volatile,</span>
<span class="line" id="L190"> keyword_while,</span>
<span class="line" id="L191"></span>
<span class="line" id="L192"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">lexeme</span>(tag: Tag) ?[]<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L193"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (tag) {</span>
<span class="line" id="L194"> .invalid,</span>
<span class="line" id="L195"> .identifier,</span>
<span class="line" id="L196"> .string_literal,</span>
<span class="line" id="L197"> .multiline_string_literal_line,</span>
<span class="line" id="L198"> .char_literal,</span>
<span class="line" id="L199"> .eof,</span>
<span class="line" id="L200"> .builtin,</span>
<span class="line" id="L201"> .number_literal,</span>
<span class="line" id="L202"> .doc_comment,</span>
<span class="line" id="L203"> .container_doc_comment,</span>
<span class="line" id="L204"> => <span class="tok-null">null</span>,</span>
<span class="line" id="L205"></span>
<span class="line" id="L206"> .invalid_periodasterisks => <span class="tok-str">".**"</span>,</span>
<span class="line" id="L207"> .bang => <span class="tok-str">"!"</span>,</span>
<span class="line" id="L208"> .pipe => <span class="tok-str">"|"</span>,</span>
<span class="line" id="L209"> .pipe_pipe => <span class="tok-str">"||"</span>,</span>
<span class="line" id="L210"> .pipe_equal => <span class="tok-str">"|="</span>,</span>
<span class="line" id="L211"> .equal => <span class="tok-str">"="</span>,</span>
<span class="line" id="L212"> .equal_equal => <span class="tok-str">"=="</span>,</span>
<span class="line" id="L213"> .equal_angle_bracket_right => <span class="tok-str">"=>"</span>,</span>
<span class="line" id="L214"> .bang_equal => <span class="tok-str">"!="</span>,</span>
<span class="line" id="L215"> .l_paren => <span class="tok-str">"("</span>,</span>
<span class="line" id="L216"> .r_paren => <span class="tok-str">")"</span>,</span>
<span class="line" id="L217"> .semicolon => <span class="tok-str">";"</span>,</span>
<span class="line" id="L218"> .percent => <span class="tok-str">"%"</span>,</span>
<span class="line" id="L219"> .percent_equal => <span class="tok-str">"%="</span>,</span>
<span class="line" id="L220"> .l_brace => <span class="tok-str">"{"</span>,</span>
<span class="line" id="L221"> .r_brace => <span class="tok-str">"}"</span>,</span>
<span class="line" id="L222"> .l_bracket => <span class="tok-str">"["</span>,</span>
<span class="line" id="L223"> .r_bracket => <span class="tok-str">"]"</span>,</span>
<span class="line" id="L224"> .period => <span class="tok-str">"."</span>,</span>
<span class="line" id="L225"> .period_asterisk => <span class="tok-str">".*"</span>,</span>
<span class="line" id="L226"> .ellipsis2 => <span class="tok-str">".."</span>,</span>
<span class="line" id="L227"> .ellipsis3 => <span class="tok-str">"..."</span>,</span>
<span class="line" id="L228"> .caret => <span class="tok-str">"^"</span>,</span>
<span class="line" id="L229"> .caret_equal => <span class="tok-str">"^="</span>,</span>
<span class="line" id="L230"> .plus => <span class="tok-str">"+"</span>,</span>
<span class="line" id="L231"> .plus_plus => <span class="tok-str">"++"</span>,</span>
<span class="line" id="L232"> .plus_equal => <span class="tok-str">"+="</span>,</span>
<span class="line" id="L233"> .plus_percent => <span class="tok-str">"+%"</span>,</span>
<span class="line" id="L234"> .plus_percent_equal => <span class="tok-str">"+%="</span>,</span>
<span class="line" id="L235"> .plus_pipe => <span class="tok-str">"+|"</span>,</span>
<span class="line" id="L236"> .plus_pipe_equal => <span class="tok-str">"+|="</span>,</span>
<span class="line" id="L237"> .minus => <span class="tok-str">"-"</span>,</span>
<span class="line" id="L238"> .minus_equal => <span class="tok-str">"-="</span>,</span>
<span class="line" id="L239"> .minus_percent => <span class="tok-str">"-%"</span>,</span>
<span class="line" id="L240"> .minus_percent_equal => <span class="tok-str">"-%="</span>,</span>
<span class="line" id="L241"> .minus_pipe => <span class="tok-str">"-|"</span>,</span>
<span class="line" id="L242"> .minus_pipe_equal => <span class="tok-str">"-|="</span>,</span>
<span class="line" id="L243"> .asterisk => <span class="tok-str">"*"</span>,</span>
<span class="line" id="L244"> .asterisk_equal => <span class="tok-str">"*="</span>,</span>
<span class="line" id="L245"> .asterisk_asterisk => <span class="tok-str">"**"</span>,</span>
<span class="line" id="L246"> .asterisk_percent => <span class="tok-str">"*%"</span>,</span>
<span class="line" id="L247"> .asterisk_percent_equal => <span class="tok-str">"*%="</span>,</span>
<span class="line" id="L248"> .asterisk_pipe => <span class="tok-str">"*|"</span>,</span>
<span class="line" id="L249"> .asterisk_pipe_equal => <span class="tok-str">"*|="</span>,</span>
<span class="line" id="L250"> .arrow => <span class="tok-str">"->"</span>,</span>
<span class="line" id="L251"> .colon => <span class="tok-str">":"</span>,</span>
<span class="line" id="L252"> .slash => <span class="tok-str">"/"</span>,</span>
<span class="line" id="L253"> .slash_equal => <span class="tok-str">"/="</span>,</span>
<span class="line" id="L254"> .comma => <span class="tok-str">","</span>,</span>
<span class="line" id="L255"> .ampersand => <span class="tok-str">"&"</span>,</span>
<span class="line" id="L256"> .ampersand_equal => <span class="tok-str">"&="</span>,</span>
<span class="line" id="L257"> .question_mark => <span class="tok-str">"?"</span>,</span>
<span class="line" id="L258"> .angle_bracket_left => <span class="tok-str">"<"</span>,</span>
<span class="line" id="L259"> .angle_bracket_left_equal => <span class="tok-str">"<="</span>,</span>
<span class="line" id="L260"> .angle_bracket_angle_bracket_left => <span class="tok-str">"<<"</span>,</span>
<span class="line" id="L261"> .angle_bracket_angle_bracket_left_equal => <span class="tok-str">"<<="</span>,</span>
<span class="line" id="L262"> .angle_bracket_angle_bracket_left_pipe => <span class="tok-str">"<<|"</span>,</span>
<span class="line" id="L263"> .angle_bracket_angle_bracket_left_pipe_equal => <span class="tok-str">"<<|="</span>,</span>
<span class="line" id="L264"> .angle_bracket_right => <span class="tok-str">">"</span>,</span>
<span class="line" id="L265"> .angle_bracket_right_equal => <span class="tok-str">">="</span>,</span>
<span class="line" id="L266"> .angle_bracket_angle_bracket_right => <span class="tok-str">">>"</span>,</span>
<span class="line" id="L267"> .angle_bracket_angle_bracket_right_equal => <span class="tok-str">">>="</span>,</span>
<span class="line" id="L268"> .tilde => <span class="tok-str">"~"</span>,</span>
<span class="line" id="L269"> .keyword_addrspace => <span class="tok-str">"addrspace"</span>,</span>
<span class="line" id="L270"> .keyword_align => <span class="tok-str">"align"</span>,</span>
<span class="line" id="L271"> .keyword_allowzero => <span class="tok-str">"allowzero"</span>,</span>
<span class="line" id="L272"> .keyword_and => <span class="tok-str">"and"</span>,</span>
<span class="line" id="L273"> .keyword_anyframe => <span class="tok-str">"anyframe"</span>,</span>
<span class="line" id="L274"> .keyword_anytype => <span class="tok-str">"anytype"</span>,</span>
<span class="line" id="L275"> .keyword_asm => <span class="tok-str">"asm"</span>,</span>
<span class="line" id="L276"> .keyword_async => <span class="tok-str">"async"</span>,</span>
<span class="line" id="L277"> .keyword_await => <span class="tok-str">"await"</span>,</span>
<span class="line" id="L278"> .keyword_break => <span class="tok-str">"break"</span>,</span>
<span class="line" id="L279"> .keyword_callconv => <span class="tok-str">"callconv"</span>,</span>
<span class="line" id="L280"> .keyword_catch => <span class="tok-str">"catch"</span>,</span>
<span class="line" id="L281"> .keyword_comptime => <span class="tok-str">"comptime"</span>,</span>
<span class="line" id="L282"> .keyword_const => <span class="tok-str">"const"</span>,</span>
<span class="line" id="L283"> .keyword_continue => <span class="tok-str">"continue"</span>,</span>
<span class="line" id="L284"> .keyword_defer => <span class="tok-str">"defer"</span>,</span>
<span class="line" id="L285"> .keyword_else => <span class="tok-str">"else"</span>,</span>
<span class="line" id="L286"> .keyword_enum => <span class="tok-str">"enum"</span>,</span>
<span class="line" id="L287"> .keyword_errdefer => <span class="tok-str">"errdefer"</span>,</span>
<span class="line" id="L288"> .keyword_error => <span class="tok-str">"error"</span>,</span>
<span class="line" id="L289"> .keyword_export => <span class="tok-str">"export"</span>,</span>
<span class="line" id="L290"> .keyword_extern => <span class="tok-str">"extern"</span>,</span>
<span class="line" id="L291"> .keyword_fn => <span class="tok-str">"fn"</span>,</span>
<span class="line" id="L292"> .keyword_for => <span class="tok-str">"for"</span>,</span>
<span class="line" id="L293"> .keyword_if => <span class="tok-str">"if"</span>,</span>
<span class="line" id="L294"> .keyword_inline => <span class="tok-str">"inline"</span>,</span>
<span class="line" id="L295"> .keyword_noalias => <span class="tok-str">"noalias"</span>,</span>
<span class="line" id="L296"> .keyword_noinline => <span class="tok-str">"noinline"</span>,</span>
<span class="line" id="L297"> .keyword_nosuspend => <span class="tok-str">"nosuspend"</span>,</span>
<span class="line" id="L298"> .keyword_opaque => <span class="tok-str">"opaque"</span>,</span>
<span class="line" id="L299"> .keyword_or => <span class="tok-str">"or"</span>,</span>
<span class="line" id="L300"> .keyword_orelse => <span class="tok-str">"orelse"</span>,</span>
<span class="line" id="L301"> .keyword_packed => <span class="tok-str">"packed"</span>,</span>
<span class="line" id="L302"> .keyword_pub => <span class="tok-str">"pub"</span>,</span>
<span class="line" id="L303"> .keyword_resume => <span class="tok-str">"resume"</span>,</span>
<span class="line" id="L304"> .keyword_return => <span class="tok-str">"return"</span>,</span>
<span class="line" id="L305"> .keyword_linksection => <span class="tok-str">"linksection"</span>,</span>
<span class="line" id="L306"> .keyword_struct => <span class="tok-str">"struct"</span>,</span>
<span class="line" id="L307"> .keyword_suspend => <span class="tok-str">"suspend"</span>,</span>
<span class="line" id="L308"> .keyword_switch => <span class="tok-str">"switch"</span>,</span>
<span class="line" id="L309"> .keyword_test => <span class="tok-str">"test"</span>,</span>
<span class="line" id="L310"> .keyword_threadlocal => <span class="tok-str">"threadlocal"</span>,</span>
<span class="line" id="L311"> .keyword_try => <span class="tok-str">"try"</span>,</span>
<span class="line" id="L312"> .keyword_union => <span class="tok-str">"union"</span>,</span>
<span class="line" id="L313"> .keyword_unreachable => <span class="tok-str">"unreachable"</span>,</span>
<span class="line" id="L314"> .keyword_usingnamespace => <span class="tok-str">"usingnamespace"</span>,</span>
<span class="line" id="L315"> .keyword_var => <span class="tok-str">"var"</span>,</span>
<span class="line" id="L316"> .keyword_volatile => <span class="tok-str">"volatile"</span>,</span>
<span class="line" id="L317"> .keyword_while => <span class="tok-str">"while"</span>,</span>
<span class="line" id="L318"> };</span>
<span class="line" id="L319"> }</span>
<span class="line" id="L320"></span>
<span class="line" id="L321"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">symbol</span>(tag: Tag) []<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L322"> <span class="tok-kw">return</span> tag.lexeme() <span class="tok-kw">orelse</span> <span class="tok-kw">switch</span> (tag) {</span>
<span class="line" id="L323"> .invalid => <span class="tok-str">"invalid bytes"</span>,</span>
<span class="line" id="L324"> .identifier => <span class="tok-str">"an identifier"</span>,</span>
<span class="line" id="L325"> .string_literal, .multiline_string_literal_line => <span class="tok-str">"a string literal"</span>,</span>
<span class="line" id="L326"> .char_literal => <span class="tok-str">"a character literal"</span>,</span>
<span class="line" id="L327"> .eof => <span class="tok-str">"EOF"</span>,</span>
<span class="line" id="L328"> .builtin => <span class="tok-str">"a builtin function"</span>,</span>
<span class="line" id="L329"> .number_literal => <span class="tok-str">"a number literal"</span>,</span>
<span class="line" id="L330"> .doc_comment, .container_doc_comment => <span class="tok-str">"a document comment"</span>,</span>
<span class="line" id="L331"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L332"> };</span>
<span class="line" id="L333"> }</span>
<span class="line" id="L334"> };</span>
<span class="line" id="L335">};</span>
<span class="line" id="L336"></span>
<span class="line" id="L337"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Tokenizer = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L338"> buffer: [:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L339"> index: <span class="tok-type">usize</span>,</span>
<span class="line" id="L340"> pending_invalid_token: ?Token,</span>
<span class="line" id="L341"></span>
<span class="line" id="L342"> <span class="tok-comment">/// For debugging purposes</span></span>
<span class="line" id="L343"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">dump</span>(self: *Tokenizer, token: *<span class="tok-kw">const</span> Token) <span class="tok-type">void</span> {</span>
<span class="line" id="L344"> std.debug.print(<span class="tok-str">"{s} \"{s}\"\n"</span>, .{ <span class="tok-builtin">@tagName</span>(token.tag), self.buffer[token.loc.start..token.loc.end] });</span>
<span class="line" id="L345"> }</span>
<span class="line" id="L346"></span>
<span class="line" id="L347"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(buffer: [:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span>) Tokenizer {</span>
<span class="line" id="L348"> <span class="tok-comment">// Skip the UTF-8 BOM if present</span>
</span>
<span class="line" id="L349"> <span class="tok-kw">const</span> src_start: <span class="tok-type">usize</span> = <span class="tok-kw">if</span> (std.mem.startsWith(<span class="tok-type">u8</span>, buffer, <span class="tok-str">"\xEF\xBB\xBF"</span>)) <span class="tok-number">3</span> <span class="tok-kw">else</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L350"> <span class="tok-kw">return</span> Tokenizer{</span>
<span class="line" id="L351"> .buffer = buffer,</span>
<span class="line" id="L352"> .index = src_start,</span>
<span class="line" id="L353"> .pending_invalid_token = <span class="tok-null">null</span>,</span>
<span class="line" id="L354"> };</span>
<span class="line" id="L355"> }</span>
<span class="line" id="L356"></span>
<span class="line" id="L357"> <span class="tok-kw">const</span> State = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L358"> start,</span>
<span class="line" id="L359"> identifier,</span>
<span class="line" id="L360"> builtin,</span>
<span class="line" id="L361"> string_literal,</span>
<span class="line" id="L362"> string_literal_backslash,</span>
<span class="line" id="L363"> multiline_string_literal_line,</span>
<span class="line" id="L364"> char_literal,</span>
<span class="line" id="L365"> char_literal_backslash,</span>
<span class="line" id="L366"> char_literal_hex_escape,</span>
<span class="line" id="L367"> char_literal_unicode_escape_saw_u,</span>
<span class="line" id="L368"> char_literal_unicode_escape,</span>
<span class="line" id="L369"> char_literal_unicode_invalid,</span>
<span class="line" id="L370"> char_literal_unicode,</span>
<span class="line" id="L371"> char_literal_end,</span>
<span class="line" id="L372"> backslash,</span>
<span class="line" id="L373"> equal,</span>
<span class="line" id="L374"> bang,</span>
<span class="line" id="L375"> pipe,</span>
<span class="line" id="L376"> minus,</span>
<span class="line" id="L377"> minus_percent,</span>
<span class="line" id="L378"> minus_pipe,</span>
<span class="line" id="L379"> asterisk,</span>
<span class="line" id="L380"> asterisk_percent,</span>
<span class="line" id="L381"> asterisk_pipe,</span>
<span class="line" id="L382"> slash,</span>
<span class="line" id="L383"> line_comment_start,</span>
<span class="line" id="L384"> line_comment,</span>
<span class="line" id="L385"> doc_comment_start,</span>
<span class="line" id="L386"> doc_comment,</span>
<span class="line" id="L387"> int,</span>
<span class="line" id="L388"> int_exponent,</span>
<span class="line" id="L389"> int_period,</span>
<span class="line" id="L390"> float,</span>
<span class="line" id="L391"> float_exponent,</span>
<span class="line" id="L392"> ampersand,</span>
<span class="line" id="L393"> caret,</span>
<span class="line" id="L394"> percent,</span>
<span class="line" id="L395"> plus,</span>
<span class="line" id="L396"> plus_percent,</span>
<span class="line" id="L397"> plus_pipe,</span>
<span class="line" id="L398"> angle_bracket_left,</span>
<span class="line" id="L399"> angle_bracket_angle_bracket_left,</span>
<span class="line" id="L400"> angle_bracket_angle_bracket_left_pipe,</span>
<span class="line" id="L401"> angle_bracket_right,</span>
<span class="line" id="L402"> angle_bracket_angle_bracket_right,</span>
<span class="line" id="L403"> period,</span>
<span class="line" id="L404"> period_2,</span>
<span class="line" id="L405"> period_asterisk,</span>
<span class="line" id="L406"> saw_at_sign,</span>
<span class="line" id="L407"> };</span>
<span class="line" id="L408"></span>
<span class="line" id="L409"> <span class="tok-comment">/// This is a workaround to the fact that the tokenizer can queue up</span></span>
<span class="line" id="L410"> <span class="tok-comment">/// 'pending_invalid_token's when parsing literals, which means that we need</span></span>
<span class="line" id="L411"> <span class="tok-comment">/// to scan from the start of the current line to find a matching tag - just</span></span>
<span class="line" id="L412"> <span class="tok-comment">/// in case it was an invalid character generated during literal</span></span>
<span class="line" id="L413"> <span class="tok-comment">/// tokenization. Ideally this processing of this would be pushed to the AST</span></span>
<span class="line" id="L414"> <span class="tok-comment">/// parser or another later stage, both to give more useful error messages</span></span>
<span class="line" id="L415"> <span class="tok-comment">/// with that extra context and in order to be able to remove this</span></span>
<span class="line" id="L416"> <span class="tok-comment">/// workaround.</span></span>
<span class="line" id="L417"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">findTagAtCurrentIndex</span>(self: *Tokenizer, tag: Token.Tag) Token {</span>
<span class="line" id="L418"> <span class="tok-kw">if</span> (tag == .invalid) {</span>
<span class="line" id="L419"> <span class="tok-kw">const</span> target_index = self.index;</span>
<span class="line" id="L420"> <span class="tok-kw">var</span> starting_index = target_index;</span>
<span class="line" id="L421"> <span class="tok-kw">while</span> (starting_index > <span class="tok-number">0</span>) {</span>
<span class="line" id="L422"> <span class="tok-kw">if</span> (self.buffer[starting_index] == <span class="tok-str">'\n'</span>) {</span>
<span class="line" id="L423"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L424"> }</span>
<span class="line" id="L425"> starting_index -= <span class="tok-number">1</span>;</span>
<span class="line" id="L426"> }</span>
<span class="line" id="L427"></span>
<span class="line" id="L428"> self.index = starting_index;</span>
<span class="line" id="L429"> <span class="tok-kw">while</span> (self.index <= target_index <span class="tok-kw">or</span> self.pending_invalid_token != <span class="tok-null">null</span>) {</span>
<span class="line" id="L430"> <span class="tok-kw">const</span> result = self.next();</span>
<span class="line" id="L431"> <span class="tok-kw">if</span> (result.loc.start == target_index <span class="tok-kw">and</span> result.tag == tag) {</span>
<span class="line" id="L432"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L433"> }</span>
<span class="line" id="L434"> }</span>
<span class="line" id="L435"> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L436"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L437"> <span class="tok-kw">return</span> self.next();</span>
<span class="line" id="L438"> }</span>
<span class="line" id="L439"> }</span>
<span class="line" id="L440"></span>
<span class="line" id="L441"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">next</span>(self: *Tokenizer) Token {</span>
<span class="line" id="L442"> <span class="tok-kw">if</span> (self.pending_invalid_token) |token| {</span>
<span class="line" id="L443"> self.pending_invalid_token = <span class="tok-null">null</span>;</span>
<span class="line" id="L444"> <span class="tok-kw">return</span> token;</span>
<span class="line" id="L445"> }</span>
<span class="line" id="L446"> <span class="tok-kw">var</span> state: State = .start;</span>
<span class="line" id="L447"> <span class="tok-kw">var</span> result = Token{</span>
<span class="line" id="L448"> .tag = .eof,</span>
<span class="line" id="L449"> .loc = .{</span>
<span class="line" id="L450"> .start = self.index,</span>
<span class="line" id="L451"> .end = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L452"> },</span>
<span class="line" id="L453"> };</span>
<span class="line" id="L454"> <span class="tok-kw">var</span> seen_escape_digits: <span class="tok-type">usize</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L455"> <span class="tok-kw">var</span> remaining_code_units: <span class="tok-type">usize</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L456"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) : (self.index += <span class="tok-number">1</span>) {</span>
<span class="line" id="L457"> <span class="tok-kw">const</span> c = self.buffer[self.index];</span>
<span class="line" id="L458"> <span class="tok-kw">switch</span> (state) {</span>
<span class="line" id="L459"> .start => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L460"> <span class="tok-number">0</span> => {</span>
<span class="line" id="L461"> <span class="tok-kw">if</span> (self.index != self.buffer.len) {</span>
<span class="line" id="L462"> result.tag = .invalid;</span>
<span class="line" id="L463"> result.loc.start = self.index;</span>
<span class="line" id="L464"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L465"> result.loc.end = self.index;</span>
<span class="line" id="L466"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L467"> }</span>
<span class="line" id="L468"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L469"> },</span>
<span class="line" id="L470"> <span class="tok-str">' '</span>, <span class="tok-str">'\n'</span>, <span class="tok-str">'\t'</span>, <span class="tok-str">'\r'</span> => {</span>
<span class="line" id="L471"> result.loc.start = self.index + <span class="tok-number">1</span>;</span>
<span class="line" id="L472"> },</span>
<span class="line" id="L473"> <span class="tok-str">'"'</span> => {</span>
<span class="line" id="L474"> state = .string_literal;</span>
<span class="line" id="L475"> result.tag = .string_literal;</span>
<span class="line" id="L476"> },</span>
<span class="line" id="L477"> <span class="tok-str">'\''</span> => {</span>
<span class="line" id="L478"> state = .char_literal;</span>
<span class="line" id="L479"> },</span>
<span class="line" id="L480"> <span class="tok-str">'a'</span>...<span class="tok-str">'z'</span>, <span class="tok-str">'A'</span>...<span class="tok-str">'Z'</span>, <span class="tok-str">'_'</span> => {</span>
<span class="line" id="L481"> state = .identifier;</span>
<span class="line" id="L482"> result.tag = .identifier;</span>
<span class="line" id="L483"> },</span>
<span class="line" id="L484"> <span class="tok-str">'@'</span> => {</span>
<span class="line" id="L485"> state = .saw_at_sign;</span>
<span class="line" id="L486"> },</span>
<span class="line" id="L487"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L488"> state = .equal;</span>
<span class="line" id="L489"> },</span>
<span class="line" id="L490"> <span class="tok-str">'!'</span> => {</span>
<span class="line" id="L491"> state = .bang;</span>
<span class="line" id="L492"> },</span>
<span class="line" id="L493"> <span class="tok-str">'|'</span> => {</span>
<span class="line" id="L494"> state = .pipe;</span>
<span class="line" id="L495"> },</span>
<span class="line" id="L496"> <span class="tok-str">'('</span> => {</span>
<span class="line" id="L497"> result.tag = .l_paren;</span>
<span class="line" id="L498"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L499"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L500"> },</span>
<span class="line" id="L501"> <span class="tok-str">')'</span> => {</span>
<span class="line" id="L502"> result.tag = .r_paren;</span>
<span class="line" id="L503"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L504"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L505"> },</span>
<span class="line" id="L506"> <span class="tok-str">'['</span> => {</span>
<span class="line" id="L507"> result.tag = .l_bracket;</span>
<span class="line" id="L508"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L509"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L510"> },</span>
<span class="line" id="L511"> <span class="tok-str">']'</span> => {</span>
<span class="line" id="L512"> result.tag = .r_bracket;</span>
<span class="line" id="L513"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L514"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L515"> },</span>
<span class="line" id="L516"> <span class="tok-str">';'</span> => {</span>
<span class="line" id="L517"> result.tag = .semicolon;</span>
<span class="line" id="L518"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L519"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L520"> },</span>
<span class="line" id="L521"> <span class="tok-str">','</span> => {</span>
<span class="line" id="L522"> result.tag = .comma;</span>
<span class="line" id="L523"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L524"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L525"> },</span>
<span class="line" id="L526"> <span class="tok-str">'?'</span> => {</span>
<span class="line" id="L527"> result.tag = .question_mark;</span>
<span class="line" id="L528"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L529"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L530"> },</span>
<span class="line" id="L531"> <span class="tok-str">':'</span> => {</span>
<span class="line" id="L532"> result.tag = .colon;</span>
<span class="line" id="L533"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L534"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L535"> },</span>
<span class="line" id="L536"> <span class="tok-str">'%'</span> => {</span>
<span class="line" id="L537"> state = .percent;</span>
<span class="line" id="L538"> },</span>
<span class="line" id="L539"> <span class="tok-str">'*'</span> => {</span>
<span class="line" id="L540"> state = .asterisk;</span>
<span class="line" id="L541"> },</span>
<span class="line" id="L542"> <span class="tok-str">'+'</span> => {</span>
<span class="line" id="L543"> state = .plus;</span>
<span class="line" id="L544"> },</span>
<span class="line" id="L545"> <span class="tok-str">'<'</span> => {</span>
<span class="line" id="L546"> state = .angle_bracket_left;</span>
<span class="line" id="L547"> },</span>
<span class="line" id="L548"> <span class="tok-str">'>'</span> => {</span>
<span class="line" id="L549"> state = .angle_bracket_right;</span>
<span class="line" id="L550"> },</span>
<span class="line" id="L551"> <span class="tok-str">'^'</span> => {</span>
<span class="line" id="L552"> state = .caret;</span>
<span class="line" id="L553"> },</span>
<span class="line" id="L554"> <span class="tok-str">'\\'</span> => {</span>
<span class="line" id="L555"> state = .backslash;</span>
<span class="line" id="L556"> result.tag = .multiline_string_literal_line;</span>
<span class="line" id="L557"> },</span>
<span class="line" id="L558"> <span class="tok-str">'{'</span> => {</span>
<span class="line" id="L559"> result.tag = .l_brace;</span>
<span class="line" id="L560"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L561"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L562"> },</span>
<span class="line" id="L563"> <span class="tok-str">'}'</span> => {</span>
<span class="line" id="L564"> result.tag = .r_brace;</span>
<span class="line" id="L565"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L566"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L567"> },</span>
<span class="line" id="L568"> <span class="tok-str">'~'</span> => {</span>
<span class="line" id="L569"> result.tag = .tilde;</span>
<span class="line" id="L570"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L571"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L572"> },</span>
<span class="line" id="L573"> <span class="tok-str">'.'</span> => {</span>
<span class="line" id="L574"> state = .period;</span>
<span class="line" id="L575"> },</span>
<span class="line" id="L576"> <span class="tok-str">'-'</span> => {</span>
<span class="line" id="L577"> state = .minus;</span>
<span class="line" id="L578"> },</span>
<span class="line" id="L579"> <span class="tok-str">'/'</span> => {</span>
<span class="line" id="L580"> state = .slash;</span>
<span class="line" id="L581"> },</span>
<span class="line" id="L582"> <span class="tok-str">'&'</span> => {</span>
<span class="line" id="L583"> state = .ampersand;</span>
<span class="line" id="L584"> },</span>
<span class="line" id="L585"> <span class="tok-str">'0'</span>...<span class="tok-str">'9'</span> => {</span>
<span class="line" id="L586"> state = .int;</span>
<span class="line" id="L587"> result.tag = .number_literal;</span>
<span class="line" id="L588"> },</span>
<span class="line" id="L589"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L590"> result.tag = .invalid;</span>
<span class="line" id="L591"> result.loc.end = self.index;</span>
<span class="line" id="L592"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L593"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L594"> },</span>
<span class="line" id="L595"> },</span>
<span class="line" id="L596"></span>
<span class="line" id="L597"> .saw_at_sign => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L598"> <span class="tok-str">'"'</span> => {</span>
<span class="line" id="L599"> result.tag = .identifier;</span>
<span class="line" id="L600"> state = .string_literal;</span>
<span class="line" id="L601"> },</span>
<span class="line" id="L602"> <span class="tok-str">'a'</span>...<span class="tok-str">'z'</span>, <span class="tok-str">'A'</span>...<span class="tok-str">'Z'</span>, <span class="tok-str">'_'</span> => {</span>
<span class="line" id="L603"> state = .builtin;</span>
<span class="line" id="L604"> result.tag = .builtin;</span>
<span class="line" id="L605"> },</span>
<span class="line" id="L606"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L607"> result.tag = .invalid;</span>
<span class="line" id="L608"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L609"> },</span>
<span class="line" id="L610"> },</span>
<span class="line" id="L611"></span>
<span class="line" id="L612"> .ampersand => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L613"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L614"> result.tag = .ampersand_equal;</span>
<span class="line" id="L615"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L616"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L617"> },</span>
<span class="line" id="L618"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L619"> result.tag = .ampersand;</span>
<span class="line" id="L620"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L621"> },</span>
<span class="line" id="L622"> },</span>
<span class="line" id="L623"></span>
<span class="line" id="L624"> .asterisk => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L625"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L626"> result.tag = .asterisk_equal;</span>
<span class="line" id="L627"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L628"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L629"> },</span>
<span class="line" id="L630"> <span class="tok-str">'*'</span> => {</span>
<span class="line" id="L631"> result.tag = .asterisk_asterisk;</span>
<span class="line" id="L632"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L633"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L634"> },</span>
<span class="line" id="L635"> <span class="tok-str">'%'</span> => {</span>
<span class="line" id="L636"> state = .asterisk_percent;</span>
<span class="line" id="L637"> },</span>
<span class="line" id="L638"> <span class="tok-str">'|'</span> => {</span>
<span class="line" id="L639"> state = .asterisk_pipe;</span>
<span class="line" id="L640"> },</span>
<span class="line" id="L641"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L642"> result.tag = .asterisk;</span>
<span class="line" id="L643"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L644"> },</span>
<span class="line" id="L645"> },</span>
<span class="line" id="L646"></span>
<span class="line" id="L647"> .asterisk_percent => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L648"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L649"> result.tag = .asterisk_percent_equal;</span>
<span class="line" id="L650"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L651"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L652"> },</span>
<span class="line" id="L653"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L654"> result.tag = .asterisk_percent;</span>
<span class="line" id="L655"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L656"> },</span>
<span class="line" id="L657"> },</span>
<span class="line" id="L658"></span>
<span class="line" id="L659"> .asterisk_pipe => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L660"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L661"> result.tag = .asterisk_pipe_equal;</span>
<span class="line" id="L662"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L663"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L664"> },</span>
<span class="line" id="L665"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L666"> result.tag = .asterisk_pipe;</span>
<span class="line" id="L667"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L668"> },</span>
<span class="line" id="L669"> },</span>
<span class="line" id="L670"></span>
<span class="line" id="L671"> .percent => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L672"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L673"> result.tag = .percent_equal;</span>
<span class="line" id="L674"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L675"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L676"> },</span>
<span class="line" id="L677"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L678"> result.tag = .percent;</span>
<span class="line" id="L679"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L680"> },</span>
<span class="line" id="L681"> },</span>
<span class="line" id="L682"></span>
<span class="line" id="L683"> .plus => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L684"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L685"> result.tag = .plus_equal;</span>
<span class="line" id="L686"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L687"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L688"> },</span>
<span class="line" id="L689"> <span class="tok-str">'+'</span> => {</span>
<span class="line" id="L690"> result.tag = .plus_plus;</span>
<span class="line" id="L691"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L692"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L693"> },</span>
<span class="line" id="L694"> <span class="tok-str">'%'</span> => {</span>
<span class="line" id="L695"> state = .plus_percent;</span>
<span class="line" id="L696"> },</span>
<span class="line" id="L697"> <span class="tok-str">'|'</span> => {</span>
<span class="line" id="L698"> state = .plus_pipe;</span>
<span class="line" id="L699"> },</span>
<span class="line" id="L700"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L701"> result.tag = .plus;</span>
<span class="line" id="L702"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L703"> },</span>
<span class="line" id="L704"> },</span>
<span class="line" id="L705"></span>
<span class="line" id="L706"> .plus_percent => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L707"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L708"> result.tag = .plus_percent_equal;</span>
<span class="line" id="L709"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L710"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L711"> },</span>
<span class="line" id="L712"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L713"> result.tag = .plus_percent;</span>
<span class="line" id="L714"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L715"> },</span>
<span class="line" id="L716"> },</span>
<span class="line" id="L717"></span>
<span class="line" id="L718"> .plus_pipe => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L719"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L720"> result.tag = .plus_pipe_equal;</span>
<span class="line" id="L721"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L722"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L723"> },</span>
<span class="line" id="L724"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L725"> result.tag = .plus_pipe;</span>
<span class="line" id="L726"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L727"> },</span>
<span class="line" id="L728"> },</span>
<span class="line" id="L729"></span>
<span class="line" id="L730"> .caret => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L731"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L732"> result.tag = .caret_equal;</span>
<span class="line" id="L733"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L734"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L735"> },</span>
<span class="line" id="L736"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L737"> result.tag = .caret;</span>
<span class="line" id="L738"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L739"> },</span>
<span class="line" id="L740"> },</span>
<span class="line" id="L741"></span>
<span class="line" id="L742"> .identifier => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L743"> <span class="tok-str">'a'</span>...<span class="tok-str">'z'</span>, <span class="tok-str">'A'</span>...<span class="tok-str">'Z'</span>, <span class="tok-str">'_'</span>, <span class="tok-str">'0'</span>...<span class="tok-str">'9'</span> => {},</span>
<span class="line" id="L744"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L745"> <span class="tok-kw">if</span> (Token.getKeyword(self.buffer[result.loc.start..self.index])) |tag| {</span>
<span class="line" id="L746"> result.tag = tag;</span>
<span class="line" id="L747"> }</span>
<span class="line" id="L748"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L749"> },</span>
<span class="line" id="L750"> },</span>
<span class="line" id="L751"> .builtin => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L752"> <span class="tok-str">'a'</span>...<span class="tok-str">'z'</span>, <span class="tok-str">'A'</span>...<span class="tok-str">'Z'</span>, <span class="tok-str">'_'</span>, <span class="tok-str">'0'</span>...<span class="tok-str">'9'</span> => {},</span>
<span class="line" id="L753"> <span class="tok-kw">else</span> => <span class="tok-kw">break</span>,</span>
<span class="line" id="L754"> },</span>
<span class="line" id="L755"> .backslash => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L756"> <span class="tok-str">'\\'</span> => {</span>
<span class="line" id="L757"> state = .multiline_string_literal_line;</span>
<span class="line" id="L758"> },</span>
<span class="line" id="L759"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L760"> result.tag = .invalid;</span>
<span class="line" id="L761"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L762"> },</span>
<span class="line" id="L763"> },</span>
<span class="line" id="L764"> .string_literal => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L765"> <span class="tok-str">'\\'</span> => {</span>
<span class="line" id="L766"> state = .string_literal_backslash;</span>
<span class="line" id="L767"> },</span>
<span class="line" id="L768"> <span class="tok-str">'"'</span> => {</span>
<span class="line" id="L769"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L770"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L771"> },</span>
<span class="line" id="L772"> <span class="tok-number">0</span> => {</span>
<span class="line" id="L773"> <span class="tok-kw">if</span> (self.index == self.buffer.len) {</span>
<span class="line" id="L774"> result.tag = .invalid;</span>
<span class="line" id="L775"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L776"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L777"> self.checkLiteralCharacter();</span>
<span class="line" id="L778"> }</span>
<span class="line" id="L779"> },</span>
<span class="line" id="L780"> <span class="tok-str">'\n'</span> => {</span>
<span class="line" id="L781"> result.tag = .invalid;</span>
<span class="line" id="L782"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L783"> },</span>
<span class="line" id="L784"> <span class="tok-kw">else</span> => self.checkLiteralCharacter(),</span>
<span class="line" id="L785"> },</span>
<span class="line" id="L786"></span>
<span class="line" id="L787"> .string_literal_backslash => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L788"> <span class="tok-number">0</span>, <span class="tok-str">'\n'</span> => {</span>
<span class="line" id="L789"> result.tag = .invalid;</span>
<span class="line" id="L790"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L791"> },</span>
<span class="line" id="L792"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L793"> state = .string_literal;</span>
<span class="line" id="L794"> },</span>
<span class="line" id="L795"> },</span>
<span class="line" id="L796"></span>
<span class="line" id="L797"> .char_literal => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L798"> <span class="tok-number">0</span> => {</span>
<span class="line" id="L799"> result.tag = .invalid;</span>
<span class="line" id="L800"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L801"> },</span>
<span class="line" id="L802"> <span class="tok-str">'\\'</span> => {</span>
<span class="line" id="L803"> state = .char_literal_backslash;</span>
<span class="line" id="L804"> },</span>
<span class="line" id="L805"> <span class="tok-str">'\''</span>, <span class="tok-number">0x80</span>...<span class="tok-number">0xbf</span>, <span class="tok-number">0xf8</span>...<span class="tok-number">0xff</span> => {</span>
<span class="line" id="L806"> result.tag = .invalid;</span>
<span class="line" id="L807"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L808"> },</span>
<span class="line" id="L809"> <span class="tok-number">0xc0</span>...<span class="tok-number">0xdf</span> => { <span class="tok-comment">// 110xxxxx</span>
</span>
<span class="line" id="L810"> remaining_code_units = <span class="tok-number">1</span>;</span>
<span class="line" id="L811"> state = .char_literal_unicode;</span>
<span class="line" id="L812"> },</span>
<span class="line" id="L813"> <span class="tok-number">0xe0</span>...<span class="tok-number">0xef</span> => { <span class="tok-comment">// 1110xxxx</span>
</span>
<span class="line" id="L814"> remaining_code_units = <span class="tok-number">2</span>;</span>
<span class="line" id="L815"> state = .char_literal_unicode;</span>
<span class="line" id="L816"> },</span>
<span class="line" id="L817"> <span class="tok-number">0xf0</span>...<span class="tok-number">0xf7</span> => { <span class="tok-comment">// 11110xxx</span>
</span>
<span class="line" id="L818"> remaining_code_units = <span class="tok-number">3</span>;</span>
<span class="line" id="L819"> state = .char_literal_unicode;</span>
<span class="line" id="L820"> },</span>
<span class="line" id="L821"> <span class="tok-str">'\n'</span> => {</span>
<span class="line" id="L822"> result.tag = .invalid;</span>
<span class="line" id="L823"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L824"> },</span>
<span class="line" id="L825"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L826"> state = .char_literal_end;</span>
<span class="line" id="L827"> },</span>
<span class="line" id="L828"> },</span>
<span class="line" id="L829"></span>
<span class="line" id="L830"> .char_literal_backslash => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L831"> <span class="tok-number">0</span>, <span class="tok-str">'\n'</span> => {</span>
<span class="line" id="L832"> result.tag = .invalid;</span>
<span class="line" id="L833"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L834"> },</span>
<span class="line" id="L835"> <span class="tok-str">'x'</span> => {</span>
<span class="line" id="L836"> state = .char_literal_hex_escape;</span>
<span class="line" id="L837"> seen_escape_digits = <span class="tok-number">0</span>;</span>
<span class="line" id="L838"> },</span>
<span class="line" id="L839"> <span class="tok-str">'u'</span> => {</span>
<span class="line" id="L840"> state = .char_literal_unicode_escape_saw_u;</span>
<span class="line" id="L841"> },</span>
<span class="line" id="L842"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L843"> state = .char_literal_end;</span>
<span class="line" id="L844"> },</span>
<span class="line" id="L845"> },</span>
<span class="line" id="L846"></span>
<span class="line" id="L847"> .char_literal_hex_escape => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L848"> <span class="tok-str">'0'</span>...<span class="tok-str">'9'</span>, <span class="tok-str">'a'</span>...<span class="tok-str">'f'</span>, <span class="tok-str">'A'</span>...<span class="tok-str">'F'</span> => {</span>
<span class="line" id="L849"> seen_escape_digits += <span class="tok-number">1</span>;</span>
<span class="line" id="L850"> <span class="tok-kw">if</span> (seen_escape_digits == <span class="tok-number">2</span>) {</span>
<span class="line" id="L851"> state = .char_literal_end;</span>
<span class="line" id="L852"> }</span>
<span class="line" id="L853"> },</span>
<span class="line" id="L854"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L855"> result.tag = .invalid;</span>
<span class="line" id="L856"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L857"> },</span>
<span class="line" id="L858"> },</span>
<span class="line" id="L859"></span>
<span class="line" id="L860"> .char_literal_unicode_escape_saw_u => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L861"> <span class="tok-number">0</span> => {</span>
<span class="line" id="L862"> result.tag = .invalid;</span>
<span class="line" id="L863"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L864"> },</span>
<span class="line" id="L865"> <span class="tok-str">'{'</span> => {</span>
<span class="line" id="L866"> state = .char_literal_unicode_escape;</span>
<span class="line" id="L867"> },</span>
<span class="line" id="L868"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L869"> result.tag = .invalid;</span>
<span class="line" id="L870"> state = .char_literal_unicode_invalid;</span>
<span class="line" id="L871"> },</span>
<span class="line" id="L872"> },</span>
<span class="line" id="L873"></span>
<span class="line" id="L874"> .char_literal_unicode_escape => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L875"> <span class="tok-number">0</span> => {</span>
<span class="line" id="L876"> result.tag = .invalid;</span>
<span class="line" id="L877"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L878"> },</span>
<span class="line" id="L879"> <span class="tok-str">'0'</span>...<span class="tok-str">'9'</span>, <span class="tok-str">'a'</span>...<span class="tok-str">'f'</span>, <span class="tok-str">'A'</span>...<span class="tok-str">'F'</span> => {},</span>
<span class="line" id="L880"> <span class="tok-str">'}'</span> => {</span>
<span class="line" id="L881"> state = .char_literal_end; <span class="tok-comment">// too many/few digits handled later</span>
</span>
<span class="line" id="L882"> },</span>
<span class="line" id="L883"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L884"> result.tag = .invalid;</span>
<span class="line" id="L885"> state = .char_literal_unicode_invalid;</span>
<span class="line" id="L886"> },</span>
<span class="line" id="L887"> },</span>
<span class="line" id="L888"></span>
<span class="line" id="L889"> .char_literal_unicode_invalid => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L890"> <span class="tok-comment">// Keep consuming characters until an obvious stopping point.</span>
</span>
<span class="line" id="L891"> <span class="tok-comment">// This consolidates e.g. `u{0ab1Q}` into a single invalid token</span>
</span>
<span class="line" id="L892"> <span class="tok-comment">// instead of creating the tokens `u{0ab1`, `Q`, `}`</span>
</span>
<span class="line" id="L893"> <span class="tok-str">'0'</span>...<span class="tok-str">'9'</span>, <span class="tok-str">'a'</span>...<span class="tok-str">'z'</span>, <span class="tok-str">'A'</span>...<span class="tok-str">'Z'</span>, <span class="tok-str">'}'</span> => {},</span>
<span class="line" id="L894"> <span class="tok-kw">else</span> => <span class="tok-kw">break</span>,</span>
<span class="line" id="L895"> },</span>
<span class="line" id="L896"></span>
<span class="line" id="L897"> .char_literal_end => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L898"> <span class="tok-str">'\''</span> => {</span>
<span class="line" id="L899"> result.tag = .char_literal;</span>
<span class="line" id="L900"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L901"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L902"> },</span>
<span class="line" id="L903"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L904"> result.tag = .invalid;</span>
<span class="line" id="L905"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L906"> },</span>
<span class="line" id="L907"> },</span>
<span class="line" id="L908"></span>
<span class="line" id="L909"> .char_literal_unicode => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L910"> <span class="tok-number">0x80</span>...<span class="tok-number">0xbf</span> => {</span>
<span class="line" id="L911"> remaining_code_units -= <span class="tok-number">1</span>;</span>
<span class="line" id="L912"> <span class="tok-kw">if</span> (remaining_code_units == <span class="tok-number">0</span>) {</span>
<span class="line" id="L913"> state = .char_literal_end;</span>
<span class="line" id="L914"> }</span>
<span class="line" id="L915"> },</span>
<span class="line" id="L916"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L917"> result.tag = .invalid;</span>
<span class="line" id="L918"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L919"> },</span>
<span class="line" id="L920"> },</span>
<span class="line" id="L921"></span>
<span class="line" id="L922"> .multiline_string_literal_line => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L923"> <span class="tok-number">0</span> => <span class="tok-kw">break</span>,</span>
<span class="line" id="L924"> <span class="tok-str">'\n'</span> => {</span>
<span class="line" id="L925"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L926"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L927"> },</span>
<span class="line" id="L928"> <span class="tok-str">'\t'</span> => {},</span>
<span class="line" id="L929"> <span class="tok-kw">else</span> => self.checkLiteralCharacter(),</span>
<span class="line" id="L930"> },</span>
<span class="line" id="L931"></span>
<span class="line" id="L932"> .bang => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L933"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L934"> result.tag = .bang_equal;</span>
<span class="line" id="L935"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L936"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L937"> },</span>
<span class="line" id="L938"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L939"> result.tag = .bang;</span>
<span class="line" id="L940"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L941"> },</span>
<span class="line" id="L942"> },</span>
<span class="line" id="L943"></span>
<span class="line" id="L944"> .pipe => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L945"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L946"> result.tag = .pipe_equal;</span>
<span class="line" id="L947"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L948"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L949"> },</span>
<span class="line" id="L950"> <span class="tok-str">'|'</span> => {</span>
<span class="line" id="L951"> result.tag = .pipe_pipe;</span>
<span class="line" id="L952"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L953"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L954"> },</span>
<span class="line" id="L955"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L956"> result.tag = .pipe;</span>
<span class="line" id="L957"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L958"> },</span>
<span class="line" id="L959"> },</span>
<span class="line" id="L960"></span>
<span class="line" id="L961"> .equal => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L962"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L963"> result.tag = .equal_equal;</span>
<span class="line" id="L964"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L965"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L966"> },</span>
<span class="line" id="L967"> <span class="tok-str">'>'</span> => {</span>
<span class="line" id="L968"> result.tag = .equal_angle_bracket_right;</span>
<span class="line" id="L969"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L970"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L971"> },</span>
<span class="line" id="L972"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L973"> result.tag = .equal;</span>
<span class="line" id="L974"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L975"> },</span>
<span class="line" id="L976"> },</span>
<span class="line" id="L977"></span>
<span class="line" id="L978"> .minus => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L979"> <span class="tok-str">'>'</span> => {</span>
<span class="line" id="L980"> result.tag = .arrow;</span>
<span class="line" id="L981"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L982"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L983"> },</span>
<span class="line" id="L984"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L985"> result.tag = .minus_equal;</span>
<span class="line" id="L986"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L987"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L988"> },</span>
<span class="line" id="L989"> <span class="tok-str">'%'</span> => {</span>
<span class="line" id="L990"> state = .minus_percent;</span>
<span class="line" id="L991"> },</span>
<span class="line" id="L992"> <span class="tok-str">'|'</span> => {</span>
<span class="line" id="L993"> state = .minus_pipe;</span>
<span class="line" id="L994"> },</span>
<span class="line" id="L995"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L996"> result.tag = .minus;</span>
<span class="line" id="L997"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L998"> },</span>
<span class="line" id="L999"> },</span>
<span class="line" id="L1000"></span>
<span class="line" id="L1001"> .minus_percent => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1002"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L1003"> result.tag = .minus_percent_equal;</span>
<span class="line" id="L1004"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L1005"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1006"> },</span>
<span class="line" id="L1007"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1008"> result.tag = .minus_percent;</span>
<span class="line" id="L1009"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1010"> },</span>
<span class="line" id="L1011"> },</span>
<span class="line" id="L1012"> .minus_pipe => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1013"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L1014"> result.tag = .minus_pipe_equal;</span>
<span class="line" id="L1015"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L1016"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1017"> },</span>
<span class="line" id="L1018"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1019"> result.tag = .minus_pipe;</span>
<span class="line" id="L1020"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1021"> },</span>
<span class="line" id="L1022"> },</span>
<span class="line" id="L1023"></span>
<span class="line" id="L1024"> .angle_bracket_left => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1025"> <span class="tok-str">'<'</span> => {</span>
<span class="line" id="L1026"> state = .angle_bracket_angle_bracket_left;</span>
<span class="line" id="L1027"> },</span>
<span class="line" id="L1028"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L1029"> result.tag = .angle_bracket_left_equal;</span>
<span class="line" id="L1030"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L1031"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1032"> },</span>
<span class="line" id="L1033"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1034"> result.tag = .angle_bracket_left;</span>
<span class="line" id="L1035"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1036"> },</span>
<span class="line" id="L1037"> },</span>
<span class="line" id="L1038"></span>
<span class="line" id="L1039"> .angle_bracket_angle_bracket_left => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1040"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L1041"> result.tag = .angle_bracket_angle_bracket_left_equal;</span>
<span class="line" id="L1042"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L1043"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1044"> },</span>
<span class="line" id="L1045"> <span class="tok-str">'|'</span> => {</span>
<span class="line" id="L1046"> state = .angle_bracket_angle_bracket_left_pipe;</span>
<span class="line" id="L1047"> },</span>
<span class="line" id="L1048"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1049"> result.tag = .angle_bracket_angle_bracket_left;</span>
<span class="line" id="L1050"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1051"> },</span>
<span class="line" id="L1052"> },</span>
<span class="line" id="L1053"></span>
<span class="line" id="L1054"> .angle_bracket_angle_bracket_left_pipe => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1055"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L1056"> result.tag = .angle_bracket_angle_bracket_left_pipe_equal;</span>
<span class="line" id="L1057"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L1058"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1059"> },</span>
<span class="line" id="L1060"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1061"> result.tag = .angle_bracket_angle_bracket_left_pipe;</span>
<span class="line" id="L1062"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1063"> },</span>
<span class="line" id="L1064"> },</span>
<span class="line" id="L1065"></span>
<span class="line" id="L1066"> .angle_bracket_right => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1067"> <span class="tok-str">'>'</span> => {</span>
<span class="line" id="L1068"> state = .angle_bracket_angle_bracket_right;</span>
<span class="line" id="L1069"> },</span>
<span class="line" id="L1070"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L1071"> result.tag = .angle_bracket_right_equal;</span>
<span class="line" id="L1072"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L1073"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1074"> },</span>
<span class="line" id="L1075"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1076"> result.tag = .angle_bracket_right;</span>
<span class="line" id="L1077"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1078"> },</span>
<span class="line" id="L1079"> },</span>
<span class="line" id="L1080"></span>
<span class="line" id="L1081"> .angle_bracket_angle_bracket_right => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1082"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L1083"> result.tag = .angle_bracket_angle_bracket_right_equal;</span>
<span class="line" id="L1084"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L1085"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1086"> },</span>
<span class="line" id="L1087"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1088"> result.tag = .angle_bracket_angle_bracket_right;</span>
<span class="line" id="L1089"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1090"> },</span>
<span class="line" id="L1091"> },</span>
<span class="line" id="L1092"></span>
<span class="line" id="L1093"> .period => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1094"> <span class="tok-str">'.'</span> => {</span>
<span class="line" id="L1095"> state = .period_2;</span>
<span class="line" id="L1096"> },</span>
<span class="line" id="L1097"> <span class="tok-str">'*'</span> => {</span>
<span class="line" id="L1098"> state = .period_asterisk;</span>
<span class="line" id="L1099"> },</span>
<span class="line" id="L1100"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1101"> result.tag = .period;</span>
<span class="line" id="L1102"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1103"> },</span>
<span class="line" id="L1104"> },</span>
<span class="line" id="L1105"></span>
<span class="line" id="L1106"> .period_2 => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1107"> <span class="tok-str">'.'</span> => {</span>
<span class="line" id="L1108"> result.tag = .ellipsis3;</span>
<span class="line" id="L1109"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L1110"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1111"> },</span>
<span class="line" id="L1112"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1113"> result.tag = .ellipsis2;</span>
<span class="line" id="L1114"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1115"> },</span>
<span class="line" id="L1116"> },</span>
<span class="line" id="L1117"></span>
<span class="line" id="L1118"> .period_asterisk => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1119"> <span class="tok-str">'*'</span> => {</span>
<span class="line" id="L1120"> result.tag = .invalid_periodasterisks;</span>
<span class="line" id="L1121"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1122"> },</span>
<span class="line" id="L1123"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1124"> result.tag = .period_asterisk;</span>
<span class="line" id="L1125"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1126"> },</span>
<span class="line" id="L1127"> },</span>
<span class="line" id="L1128"></span>
<span class="line" id="L1129"> .slash => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1130"> <span class="tok-str">'/'</span> => {</span>
<span class="line" id="L1131"> state = .line_comment_start;</span>
<span class="line" id="L1132"> },</span>
<span class="line" id="L1133"> <span class="tok-str">'='</span> => {</span>
<span class="line" id="L1134"> result.tag = .slash_equal;</span>
<span class="line" id="L1135"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L1136"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1137"> },</span>
<span class="line" id="L1138"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1139"> result.tag = .slash;</span>
<span class="line" id="L1140"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1141"> },</span>
<span class="line" id="L1142"> },</span>
<span class="line" id="L1143"> .line_comment_start => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1144"> <span class="tok-number">0</span> => {</span>
<span class="line" id="L1145"> <span class="tok-kw">if</span> (self.index != self.buffer.len) {</span>
<span class="line" id="L1146"> result.tag = .invalid;</span>
<span class="line" id="L1147"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L1148"> }</span>
<span class="line" id="L1149"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1150"> },</span>
<span class="line" id="L1151"> <span class="tok-str">'/'</span> => {</span>
<span class="line" id="L1152"> state = .doc_comment_start;</span>
<span class="line" id="L1153"> },</span>
<span class="line" id="L1154"> <span class="tok-str">'!'</span> => {</span>
<span class="line" id="L1155"> result.tag = .container_doc_comment;</span>
<span class="line" id="L1156"> state = .doc_comment;</span>
<span class="line" id="L1157"> },</span>
<span class="line" id="L1158"> <span class="tok-str">'\n'</span> => {</span>
<span class="line" id="L1159"> state = .start;</span>
<span class="line" id="L1160"> result.loc.start = self.index + <span class="tok-number">1</span>;</span>
<span class="line" id="L1161"> },</span>
<span class="line" id="L1162"> <span class="tok-str">'\t'</span> => state = .line_comment,</span>
<span class="line" id="L1163"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1164"> state = .line_comment;</span>
<span class="line" id="L1165"> self.checkLiteralCharacter();</span>
<span class="line" id="L1166"> },</span>
<span class="line" id="L1167"> },</span>
<span class="line" id="L1168"> .doc_comment_start => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1169"> <span class="tok-str">'/'</span> => {</span>
<span class="line" id="L1170"> state = .line_comment;</span>
<span class="line" id="L1171"> },</span>
<span class="line" id="L1172"> <span class="tok-number">0</span>, <span class="tok-str">'\n'</span> => {</span>
<span class="line" id="L1173"> result.tag = .doc_comment;</span>
<span class="line" id="L1174"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1175"> },</span>
<span class="line" id="L1176"> <span class="tok-str">'\t'</span> => {</span>
<span class="line" id="L1177"> state = .doc_comment;</span>
<span class="line" id="L1178"> result.tag = .doc_comment;</span>
<span class="line" id="L1179"> },</span>
<span class="line" id="L1180"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1181"> state = .doc_comment;</span>
<span class="line" id="L1182"> result.tag = .doc_comment;</span>
<span class="line" id="L1183"> self.checkLiteralCharacter();</span>
<span class="line" id="L1184"> },</span>
<span class="line" id="L1185"> },</span>
<span class="line" id="L1186"> .line_comment => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1187"> <span class="tok-number">0</span> => {</span>
<span class="line" id="L1188"> <span class="tok-kw">if</span> (self.index != self.buffer.len) {</span>
<span class="line" id="L1189"> result.tag = .invalid;</span>
<span class="line" id="L1190"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L1191"> }</span>
<span class="line" id="L1192"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1193"> },</span>
<span class="line" id="L1194"> <span class="tok-str">'\n'</span> => {</span>
<span class="line" id="L1195"> state = .start;</span>
<span class="line" id="L1196"> result.loc.start = self.index + <span class="tok-number">1</span>;</span>
<span class="line" id="L1197"> },</span>
<span class="line" id="L1198"> <span class="tok-str">'\t'</span> => {},</span>
<span class="line" id="L1199"> <span class="tok-kw">else</span> => self.checkLiteralCharacter(),</span>
<span class="line" id="L1200"> },</span>
<span class="line" id="L1201"> .doc_comment => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1202"> <span class="tok-number">0</span>, <span class="tok-str">'\n'</span> => <span class="tok-kw">break</span>,</span>
<span class="line" id="L1203"> <span class="tok-str">'\t'</span> => {},</span>
<span class="line" id="L1204"> <span class="tok-kw">else</span> => self.checkLiteralCharacter(),</span>
<span class="line" id="L1205"> },</span>
<span class="line" id="L1206"> .int => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1207"> <span class="tok-str">'.'</span> => state = .int_period,</span>
<span class="line" id="L1208"> <span class="tok-str">'_'</span>, <span class="tok-str">'a'</span>...<span class="tok-str">'d'</span>, <span class="tok-str">'f'</span>...<span class="tok-str">'o'</span>, <span class="tok-str">'q'</span>...<span class="tok-str">'z'</span>, <span class="tok-str">'A'</span>...<span class="tok-str">'D'</span>, <span class="tok-str">'F'</span>...<span class="tok-str">'O'</span>, <span class="tok-str">'Q'</span>...<span class="tok-str">'Z'</span>, <span class="tok-str">'0'</span>...<span class="tok-str">'9'</span> => {},</span>
<span class="line" id="L1209"> <span class="tok-str">'e'</span>, <span class="tok-str">'E'</span>, <span class="tok-str">'p'</span>, <span class="tok-str">'P'</span> => state = .int_exponent,</span>
<span class="line" id="L1210"> <span class="tok-kw">else</span> => <span class="tok-kw">break</span>,</span>
<span class="line" id="L1211"> },</span>
<span class="line" id="L1212"> .int_exponent => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1213"> <span class="tok-str">'-'</span>, <span class="tok-str">'+'</span> => {</span>
<span class="line" id="L1214"> state = .float;</span>
<span class="line" id="L1215"> },</span>
<span class="line" id="L1216"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1217"> self.index -= <span class="tok-number">1</span>;</span>
<span class="line" id="L1218"> state = .int;</span>
<span class="line" id="L1219"> },</span>
<span class="line" id="L1220"> },</span>
<span class="line" id="L1221"> .int_period => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1222"> <span class="tok-str">'_'</span>, <span class="tok-str">'a'</span>...<span class="tok-str">'d'</span>, <span class="tok-str">'f'</span>...<span class="tok-str">'o'</span>, <span class="tok-str">'q'</span>...<span class="tok-str">'z'</span>, <span class="tok-str">'A'</span>...<span class="tok-str">'D'</span>, <span class="tok-str">'F'</span>...<span class="tok-str">'O'</span>, <span class="tok-str">'Q'</span>...<span class="tok-str">'Z'</span>, <span class="tok-str">'0'</span>...<span class="tok-str">'9'</span> => {</span>
<span class="line" id="L1223"> state = .float;</span>
<span class="line" id="L1224"> },</span>
<span class="line" id="L1225"> <span class="tok-str">'e'</span>, <span class="tok-str">'E'</span>, <span class="tok-str">'p'</span>, <span class="tok-str">'P'</span> => state = .float_exponent,</span>
<span class="line" id="L1226"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1227"> self.index -= <span class="tok-number">1</span>;</span>
<span class="line" id="L1228"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L1229"> },</span>
<span class="line" id="L1230"> },</span>
<span class="line" id="L1231"> .float => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1232"> <span class="tok-str">'_'</span>, <span class="tok-str">'a'</span>...<span class="tok-str">'d'</span>, <span class="tok-str">'f'</span>...<span class="tok-str">'o'</span>, <span class="tok-str">'q'</span>...<span class="tok-str">'z'</span>, <span class="tok-str">'A'</span>...<span class="tok-str">'D'</span>, <span class="tok-str">'F'</span>...<span class="tok-str">'O'</span>, <span class="tok-str">'Q'</span>...<span class="tok-str">'Z'</span>, <span class="tok-str">'0'</span>...<span class="tok-str">'9'</span> => {},</span>
<span class="line" id="L1233"> <span class="tok-str">'e'</span>, <span class="tok-str">'E'</span>, <span class="tok-str">'p'</span>, <span class="tok-str">'P'</span> => state = .float_exponent,</span>
<span class="line" id="L1234"> <span class="tok-kw">else</span> => <span class="tok-kw">break</span>,</span>
<span class="line" id="L1235"> },</span>
<span class="line" id="L1236"> .float_exponent => <span class="tok-kw">switch</span> (c) {</span>
<span class="line" id="L1237"> <span class="tok-str">'-'</span>, <span class="tok-str">'+'</span> => state = .float,</span>
<span class="line" id="L1238"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L1239"> self.index -= <span class="tok-number">1</span>;</span>
<span class="line" id="L1240"> state = .float;</span>
<span class="line" id="L1241"> },</span>
<span class="line" id="L1242"> },</span>
<span class="line" id="L1243"> }</span>
<span class="line" id="L1244"> }</span>
<span class="line" id="L1245"></span>
<span class="line" id="L1246"> <span class="tok-kw">if</span> (result.tag == .eof) {</span>
<span class="line" id="L1247"> <span class="tok-kw">if</span> (self.pending_invalid_token) |token| {</span>
<span class="line" id="L1248"> self.pending_invalid_token = <span class="tok-null">null</span>;</span>
<span class="line" id="L1249"> <span class="tok-kw">return</span> token;</span>
<span class="line" id="L1250"> }</span>
<span class="line" id="L1251"> result.loc.start = self.index;</span>
<span class="line" id="L1252"> }</span>
<span class="line" id="L1253"></span>
<span class="line" id="L1254"> result.loc.end = self.index;</span>
<span class="line" id="L1255"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L1256"> }</span>
<span class="line" id="L1257"></span>
<span class="line" id="L1258"> <span class="tok-kw">fn</span> <span class="tok-fn">checkLiteralCharacter</span>(self: *Tokenizer) <span class="tok-type">void</span> {</span>
<span class="line" id="L1259"> <span class="tok-kw">if</span> (self.pending_invalid_token != <span class="tok-null">null</span>) <span class="tok-kw">return</span>;</span>
<span class="line" id="L1260"> <span class="tok-kw">const</span> invalid_length = self.getInvalidCharacterLength();</span>
<span class="line" id="L1261"> <span class="tok-kw">if</span> (invalid_length == <span class="tok-number">0</span>) <span class="tok-kw">return</span>;</span>
<span class="line" id="L1262"> self.pending_invalid_token = .{</span>
<span class="line" id="L1263"> .tag = .invalid,</span>
<span class="line" id="L1264"> .loc = .{</span>
<span class="line" id="L1265"> .start = self.index,</span>
<span class="line" id="L1266"> .end = self.index + invalid_length,</span>
<span class="line" id="L1267"> },</span>
<span class="line" id="L1268"> };</span>
<span class="line" id="L1269"> }</span>
<span class="line" id="L1270"></span>
<span class="line" id="L1271"> <span class="tok-kw">fn</span> <span class="tok-fn">getInvalidCharacterLength</span>(self: *Tokenizer) <span class="tok-type">u3</span> {</span>
<span class="line" id="L1272"> <span class="tok-kw">const</span> c0 = self.buffer[self.index];</span>
<span class="line" id="L1273"> <span class="tok-kw">if</span> (std.ascii.isASCII(c0)) {</span>
<span class="line" id="L1274"> <span class="tok-kw">if</span> (c0 == <span class="tok-str">'\r'</span>) {</span>
<span class="line" id="L1275"> <span class="tok-kw">if</span> (self.index + <span class="tok-number">1</span> < self.buffer.len <span class="tok-kw">and</span> self.buffer[self.index + <span class="tok-number">1</span>] == <span class="tok-str">'\n'</span>) {</span>
<span class="line" id="L1276"> <span class="tok-comment">// Carriage returns are *only* allowed just before a linefeed as part of a CRLF pair, otherwise</span>
</span>
<span class="line" id="L1277"> <span class="tok-comment">// they constitute an illegal byte!</span>
</span>
<span class="line" id="L1278"> <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L1279"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1280"> <span class="tok-kw">return</span> <span class="tok-number">1</span>;</span>
<span class="line" id="L1281"> }</span>
<span class="line" id="L1282"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (std.ascii.isControl(c0)) {</span>
<span class="line" id="L1283"> <span class="tok-comment">// ascii control codes are never allowed</span>
</span>
<span class="line" id="L1284"> <span class="tok-comment">// (note that \n was checked before we got here)</span>
</span>
<span class="line" id="L1285"> <span class="tok-kw">return</span> <span class="tok-number">1</span>;</span>
<span class="line" id="L1286"> }</span>
<span class="line" id="L1287"> <span class="tok-comment">// looks fine to me.</span>
</span>
<span class="line" id="L1288"> <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L1289"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1290"> <span class="tok-comment">// check utf8-encoded character.</span>
</span>
<span class="line" id="L1291"> <span class="tok-kw">const</span> length = std.unicode.utf8ByteSequenceLength(c0) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-number">1</span>;</span>
<span class="line" id="L1292"> <span class="tok-kw">if</span> (self.index + length > self.buffer.len) {</span>
<span class="line" id="L1293"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">u3</span>, <span class="tok-builtin">@intCast</span>(self.buffer.len - self.index));</span>
<span class="line" id="L1294"> }</span>
<span class="line" id="L1295"> <span class="tok-kw">const</span> bytes = self.buffer[self.index .. self.index + length];</span>
<span class="line" id="L1296"> <span class="tok-kw">switch</span> (length) {</span>
<span class="line" id="L1297"> <span class="tok-number">2</span> => {</span>
<span class="line" id="L1298"> <span class="tok-kw">const</span> value = std.unicode.utf8Decode2(bytes) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> length;</span>
<span class="line" id="L1299"> <span class="tok-kw">if</span> (value == <span class="tok-number">0x85</span>) <span class="tok-kw">return</span> length; <span class="tok-comment">// U+0085 (NEL)</span>
</span>
<span class="line" id="L1300"> },</span>
<span class="line" id="L1301"> <span class="tok-number">3</span> => {</span>
<span class="line" id="L1302"> <span class="tok-kw">const</span> value = std.unicode.utf8Decode3(bytes) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> length;</span>
<span class="line" id="L1303"> <span class="tok-kw">if</span> (value == <span class="tok-number">0x2028</span>) <span class="tok-kw">return</span> length; <span class="tok-comment">// U+2028 (LS)</span>
</span>
<span class="line" id="L1304"> <span class="tok-kw">if</span> (value == <span class="tok-number">0x2029</span>) <span class="tok-kw">return</span> length; <span class="tok-comment">// U+2029 (PS)</span>
</span>
<span class="line" id="L1305"> },</span>
<span class="line" id="L1306"> <span class="tok-number">4</span> => {</span>
<span class="line" id="L1307"> _ = std.unicode.utf8Decode4(bytes) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> length;</span>
<span class="line" id="L1308"> },</span>
<span class="line" id="L1309"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L1310"> }</span>
<span class="line" id="L1311"> self.index += length - <span class="tok-number">1</span>;</span>
<span class="line" id="L1312"> <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L1313"> }</span>
<span class="line" id="L1314"> }</span>
<span class="line" id="L1315">};</span>
<span class="line" id="L1316"></span>
<span class="line" id="L1317"><span class="tok-kw">test</span> <span class="tok-str">"keywords"</span> {</span>
<span class="line" id="L1318"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"test const else"</span>, &.{ .keyword_test, .keyword_const, .keyword_else });</span>
<span class="line" id="L1319">}</span>
<span class="line" id="L1320"></span>
<span class="line" id="L1321"><span class="tok-kw">test</span> <span class="tok-str">"line comment followed by top-level comptime"</span> {</span>
<span class="line" id="L1322"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1323"> <span class="tok-str">\\// line comment</span></span>
<span class="line" id="L1324"> <span class="tok-str">\\comptime {}</span></span>
<span class="line" id="L1325"> <span class="tok-str">\\</span></span>
<span class="line" id="L1326"> , &.{</span>
<span class="line" id="L1327"> .keyword_comptime,</span>
<span class="line" id="L1328"> .l_brace,</span>
<span class="line" id="L1329"> .r_brace,</span>
<span class="line" id="L1330"> });</span>
<span class="line" id="L1331">}</span>
<span class="line" id="L1332"></span>
<span class="line" id="L1333"><span class="tok-kw">test</span> <span class="tok-str">"unknown length pointer and then c pointer"</span> {</span>
<span class="line" id="L1334"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1335"> <span class="tok-str">\\[*]u8</span></span>
<span class="line" id="L1336"> <span class="tok-str">\\[*c]u8</span></span>
<span class="line" id="L1337"> , &.{</span>
<span class="line" id="L1338"> .l_bracket,</span>
<span class="line" id="L1339"> .asterisk,</span>
<span class="line" id="L1340"> .r_bracket,</span>
<span class="line" id="L1341"> .identifier,</span>
<span class="line" id="L1342"> .l_bracket,</span>
<span class="line" id="L1343"> .asterisk,</span>
<span class="line" id="L1344"> .identifier,</span>
<span class="line" id="L1345"> .r_bracket,</span>
<span class="line" id="L1346"> .identifier,</span>
<span class="line" id="L1347"> });</span>
<span class="line" id="L1348">}</span>
<span class="line" id="L1349"></span>
<span class="line" id="L1350"><span class="tok-kw">test</span> <span class="tok-str">"code point literal with hex escape"</span> {</span>
<span class="line" id="L1351"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1352"> <span class="tok-str">\\'\x1b'</span></span>
<span class="line" id="L1353"> , &.{.char_literal});</span>
<span class="line" id="L1354"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1355"> <span class="tok-str">\\'\x1'</span></span>
<span class="line" id="L1356"> , &.{ .invalid, .invalid });</span>
<span class="line" id="L1357">}</span>
<span class="line" id="L1358"></span>
<span class="line" id="L1359"><span class="tok-kw">test</span> <span class="tok-str">"newline in char literal"</span> {</span>
<span class="line" id="L1360"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1361"> <span class="tok-str">\\'</span></span>
<span class="line" id="L1362"> <span class="tok-str">\\'</span></span>
<span class="line" id="L1363"> , &.{ .invalid, .invalid });</span>
<span class="line" id="L1364">}</span>
<span class="line" id="L1365"></span>
<span class="line" id="L1366"><span class="tok-kw">test</span> <span class="tok-str">"newline in string literal"</span> {</span>
<span class="line" id="L1367"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1368"> <span class="tok-str">\\"</span></span>
<span class="line" id="L1369"> <span class="tok-str">\\"</span></span>
<span class="line" id="L1370"> , &.{ .invalid, .invalid });</span>
<span class="line" id="L1371">}</span>
<span class="line" id="L1372"></span>
<span class="line" id="L1373"><span class="tok-kw">test</span> <span class="tok-str">"code point literal with unicode escapes"</span> {</span>
<span class="line" id="L1374"> <span class="tok-comment">// Valid unicode escapes</span>
</span>
<span class="line" id="L1375"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1376"> <span class="tok-str">\\'\u{3}'</span></span>
<span class="line" id="L1377"> , &.{.char_literal});</span>
<span class="line" id="L1378"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1379"> <span class="tok-str">\\'\u{01}'</span></span>
<span class="line" id="L1380"> , &.{.char_literal});</span>
<span class="line" id="L1381"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1382"> <span class="tok-str">\\'\u{2a}'</span></span>
<span class="line" id="L1383"> , &.{.char_literal});</span>
<span class="line" id="L1384"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1385"> <span class="tok-str">\\'\u{3f9}'</span></span>
<span class="line" id="L1386"> , &.{.char_literal});</span>
<span class="line" id="L1387"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1388"> <span class="tok-str">\\'\u{6E09aBc1523}'</span></span>
<span class="line" id="L1389"> , &.{.char_literal});</span>
<span class="line" id="L1390"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1391"> <span class="tok-str">\\"\u{440}"</span></span>
<span class="line" id="L1392"> , &.{.string_literal});</span>
<span class="line" id="L1393"></span>
<span class="line" id="L1394"> <span class="tok-comment">// Invalid unicode escapes</span>
</span>
<span class="line" id="L1395"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1396"> <span class="tok-str">\\'\u'</span></span>
<span class="line" id="L1397"> , &.{.invalid});</span>
<span class="line" id="L1398"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1399"> <span class="tok-str">\\'\u{{'</span></span>
<span class="line" id="L1400"> , &.{ .invalid, .invalid });</span>
<span class="line" id="L1401"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1402"> <span class="tok-str">\\'\u{}'</span></span>
<span class="line" id="L1403"> , &.{.char_literal});</span>
<span class="line" id="L1404"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1405"> <span class="tok-str">\\'\u{s}'</span></span>
<span class="line" id="L1406"> , &.{ .invalid, .invalid });</span>
<span class="line" id="L1407"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1408"> <span class="tok-str">\\'\u{2z}'</span></span>
<span class="line" id="L1409"> , &.{ .invalid, .invalid });</span>
<span class="line" id="L1410"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1411"> <span class="tok-str">\\'\u{4a'</span></span>
<span class="line" id="L1412"> , &.{.invalid});</span>
<span class="line" id="L1413"></span>
<span class="line" id="L1414"> <span class="tok-comment">// Test old-style unicode literals</span>
</span>
<span class="line" id="L1415"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1416"> <span class="tok-str">\\'\u0333'</span></span>
<span class="line" id="L1417"> , &.{ .invalid, .invalid });</span>
<span class="line" id="L1418"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1419"> <span class="tok-str">\\'\U0333'</span></span>
<span class="line" id="L1420"> , &.{ .invalid, .number_literal, .invalid });</span>
<span class="line" id="L1421">}</span>
<span class="line" id="L1422"></span>
<span class="line" id="L1423"><span class="tok-kw">test</span> <span class="tok-str">"code point literal with unicode code point"</span> {</span>
<span class="line" id="L1424"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1425"> <span class="tok-str">\\'💩'</span></span>
<span class="line" id="L1426"> , &.{.char_literal});</span>
<span class="line" id="L1427">}</span>
<span class="line" id="L1428"></span>
<span class="line" id="L1429"><span class="tok-kw">test</span> <span class="tok-str">"float literal e exponent"</span> {</span>
<span class="line" id="L1430"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"a = 4.94065645841246544177e-324;\n"</span>, &.{</span>
<span class="line" id="L1431"> .identifier,</span>
<span class="line" id="L1432"> .equal,</span>
<span class="line" id="L1433"> .number_literal,</span>
<span class="line" id="L1434"> .semicolon,</span>
<span class="line" id="L1435"> });</span>
<span class="line" id="L1436">}</span>
<span class="line" id="L1437"></span>
<span class="line" id="L1438"><span class="tok-kw">test</span> <span class="tok-str">"float literal p exponent"</span> {</span>
<span class="line" id="L1439"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"a = 0x1.a827999fcef32p+1022;\n"</span>, &.{</span>
<span class="line" id="L1440"> .identifier,</span>
<span class="line" id="L1441"> .equal,</span>
<span class="line" id="L1442"> .number_literal,</span>
<span class="line" id="L1443"> .semicolon,</span>
<span class="line" id="L1444"> });</span>
<span class="line" id="L1445">}</span>
<span class="line" id="L1446"></span>
<span class="line" id="L1447"><span class="tok-kw">test</span> <span class="tok-str">"chars"</span> {</span>
<span class="line" id="L1448"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"'c'"</span>, &.{.char_literal});</span>
<span class="line" id="L1449">}</span>
<span class="line" id="L1450"></span>
<span class="line" id="L1451"><span class="tok-kw">test</span> <span class="tok-str">"invalid token characters"</span> {</span>
<span class="line" id="L1452"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"#"</span>, &.{.invalid});</span>
<span class="line" id="L1453"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"`"</span>, &.{.invalid});</span>
<span class="line" id="L1454"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"'c"</span>, &.{.invalid});</span>
<span class="line" id="L1455"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"'"</span>, &.{.invalid});</span>
<span class="line" id="L1456"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"''"</span>, &.{ .invalid, .invalid });</span>
<span class="line" id="L1457">}</span>
<span class="line" id="L1458"></span>
<span class="line" id="L1459"><span class="tok-kw">test</span> <span class="tok-str">"invalid literal/comment characters"</span> {</span>
<span class="line" id="L1460"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"\"\x00\""</span>, &.{</span>
<span class="line" id="L1461"> .string_literal,</span>
<span class="line" id="L1462"> .invalid,</span>
<span class="line" id="L1463"> });</span>
<span class="line" id="L1464"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\x00"</span>, &.{</span>
<span class="line" id="L1465"> .invalid,</span>
<span class="line" id="L1466"> });</span>
<span class="line" id="L1467"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\x1f"</span>, &.{</span>
<span class="line" id="L1468"> .invalid,</span>
<span class="line" id="L1469"> });</span>
<span class="line" id="L1470"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\x7f"</span>, &.{</span>
<span class="line" id="L1471"> .invalid,</span>
<span class="line" id="L1472"> });</span>
<span class="line" id="L1473">}</span>
<span class="line" id="L1474"></span>
<span class="line" id="L1475"><span class="tok-kw">test</span> <span class="tok-str">"utf8"</span> {</span>
<span class="line" id="L1476"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\xc2\x80"</span>, &.{});</span>
<span class="line" id="L1477"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\xf4\x8f\xbf\xbf"</span>, &.{});</span>
<span class="line" id="L1478">}</span>
<span class="line" id="L1479"></span>
<span class="line" id="L1480"><span class="tok-kw">test</span> <span class="tok-str">"invalid utf8"</span> {</span>
<span class="line" id="L1481"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\x80"</span>, &.{</span>
<span class="line" id="L1482"> .invalid,</span>
<span class="line" id="L1483"> });</span>
<span class="line" id="L1484"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\xbf"</span>, &.{</span>
<span class="line" id="L1485"> .invalid,</span>
<span class="line" id="L1486"> });</span>
<span class="line" id="L1487"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\xf8"</span>, &.{</span>
<span class="line" id="L1488"> .invalid,</span>
<span class="line" id="L1489"> });</span>
<span class="line" id="L1490"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\xff"</span>, &.{</span>
<span class="line" id="L1491"> .invalid,</span>
<span class="line" id="L1492"> });</span>
<span class="line" id="L1493"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\xc2\xc0"</span>, &.{</span>
<span class="line" id="L1494"> .invalid,</span>
<span class="line" id="L1495"> });</span>
<span class="line" id="L1496"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\xe0"</span>, &.{</span>
<span class="line" id="L1497"> .invalid,</span>
<span class="line" id="L1498"> });</span>
<span class="line" id="L1499"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\xf0"</span>, &.{</span>
<span class="line" id="L1500"> .invalid,</span>
<span class="line" id="L1501"> });</span>
<span class="line" id="L1502"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\xf0\x90\x80\xc0"</span>, &.{</span>
<span class="line" id="L1503"> .invalid,</span>
<span class="line" id="L1504"> });</span>
<span class="line" id="L1505">}</span>
<span class="line" id="L1506"></span>
<span class="line" id="L1507"><span class="tok-kw">test</span> <span class="tok-str">"illegal unicode codepoints"</span> {</span>
<span class="line" id="L1508"> <span class="tok-comment">// unicode newline characters.U+0085, U+2028, U+2029</span>
</span>
<span class="line" id="L1509"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\xc2\x84"</span>, &.{});</span>
<span class="line" id="L1510"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\xc2\x85"</span>, &.{</span>
<span class="line" id="L1511"> .invalid,</span>
<span class="line" id="L1512"> });</span>
<span class="line" id="L1513"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\xc2\x86"</span>, &.{});</span>
<span class="line" id="L1514"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\xe2\x80\xa7"</span>, &.{});</span>
<span class="line" id="L1515"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\xe2\x80\xa8"</span>, &.{</span>
<span class="line" id="L1516"> .invalid,</span>
<span class="line" id="L1517"> });</span>
<span class="line" id="L1518"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\xe2\x80\xa9"</span>, &.{</span>
<span class="line" id="L1519"> .invalid,</span>
<span class="line" id="L1520"> });</span>
<span class="line" id="L1521"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\xe2\x80\xaa"</span>, &.{});</span>
<span class="line" id="L1522">}</span>
<span class="line" id="L1523"></span>
<span class="line" id="L1524"><span class="tok-kw">test</span> <span class="tok-str">"string identifier and builtin fns"</span> {</span>
<span class="line" id="L1525"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1526"> <span class="tok-str">\\const @"if" = @import("std");</span></span>
<span class="line" id="L1527"> , &.{</span>
<span class="line" id="L1528"> .keyword_const,</span>
<span class="line" id="L1529"> .identifier,</span>
<span class="line" id="L1530"> .equal,</span>
<span class="line" id="L1531"> .builtin,</span>
<span class="line" id="L1532"> .l_paren,</span>
<span class="line" id="L1533"> .string_literal,</span>
<span class="line" id="L1534"> .r_paren,</span>
<span class="line" id="L1535"> .semicolon,</span>
<span class="line" id="L1536"> });</span>
<span class="line" id="L1537">}</span>
<span class="line" id="L1538"></span>
<span class="line" id="L1539"><span class="tok-kw">test</span> <span class="tok-str">"multiline string literal with literal tab"</span> {</span>
<span class="line" id="L1540"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1541"> <span class="tok-str">\\\\foo bar</span></span>
<span class="line" id="L1542"> , &.{</span>
<span class="line" id="L1543"> .multiline_string_literal_line,</span>
<span class="line" id="L1544"> });</span>
<span class="line" id="L1545">}</span>
<span class="line" id="L1546"></span>
<span class="line" id="L1547"><span class="tok-kw">test</span> <span class="tok-str">"comments with literal tab"</span> {</span>
<span class="line" id="L1548"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1549"> <span class="tok-str">\\//foo bar</span></span>
<span class="line" id="L1550"> <span class="tok-str">\\//!foo bar</span></span>
<span class="line" id="L1551"> <span class="tok-str">\\///foo bar</span></span>
<span class="line" id="L1552"> <span class="tok-str">\\// foo</span></span>
<span class="line" id="L1553"> <span class="tok-str">\\/// foo</span></span>
<span class="line" id="L1554"> <span class="tok-str">\\/// /foo</span></span>
<span class="line" id="L1555"> , &.{</span>
<span class="line" id="L1556"> .container_doc_comment,</span>
<span class="line" id="L1557"> .doc_comment,</span>
<span class="line" id="L1558"> .doc_comment,</span>
<span class="line" id="L1559"> .doc_comment,</span>
<span class="line" id="L1560"> });</span>
<span class="line" id="L1561">}</span>
<span class="line" id="L1562"></span>
<span class="line" id="L1563"><span class="tok-kw">test</span> <span class="tok-str">"pipe and then invalid"</span> {</span>
<span class="line" id="L1564"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"||="</span>, &.{</span>
<span class="line" id="L1565"> .pipe_pipe,</span>
<span class="line" id="L1566"> .equal,</span>
<span class="line" id="L1567"> });</span>
<span class="line" id="L1568">}</span>
<span class="line" id="L1569"></span>
<span class="line" id="L1570"><span class="tok-kw">test</span> <span class="tok-str">"line comment and doc comment"</span> {</span>
<span class="line" id="L1571"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//"</span>, &.{});</span>
<span class="line" id="L1572"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"// a / b"</span>, &.{});</span>
<span class="line" id="L1573"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"// /"</span>, &.{});</span>
<span class="line" id="L1574"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"/// a"</span>, &.{.doc_comment});</span>
<span class="line" id="L1575"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"///"</span>, &.{.doc_comment});</span>
<span class="line" id="L1576"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"////"</span>, &.{});</span>
<span class="line" id="L1577"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//!"</span>, &.{.container_doc_comment});</span>
<span class="line" id="L1578"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//!!"</span>, &.{.container_doc_comment});</span>
<span class="line" id="L1579">}</span>
<span class="line" id="L1580"></span>
<span class="line" id="L1581"><span class="tok-kw">test</span> <span class="tok-str">"line comment followed by identifier"</span> {</span>
<span class="line" id="L1582"> <span class="tok-kw">try</span> testTokenize(</span>
<span class="line" id="L1583"> <span class="tok-str">\\ Unexpected,</span></span>
<span class="line" id="L1584"> <span class="tok-str">\\ // another</span></span>
<span class="line" id="L1585"> <span class="tok-str">\\ Another,</span></span>
<span class="line" id="L1586"> , &.{</span>
<span class="line" id="L1587"> .identifier,</span>
<span class="line" id="L1588"> .comma,</span>
<span class="line" id="L1589"> .identifier,</span>
<span class="line" id="L1590"> .comma,</span>
<span class="line" id="L1591"> });</span>
<span class="line" id="L1592">}</span>
<span class="line" id="L1593"></span>
<span class="line" id="L1594"><span class="tok-kw">test</span> <span class="tok-str">"UTF-8 BOM is recognized and skipped"</span> {</span>
<span class="line" id="L1595"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"\xEF\xBB\xBFa;\n"</span>, &.{</span>
<span class="line" id="L1596"> .identifier,</span>
<span class="line" id="L1597"> .semicolon,</span>
<span class="line" id="L1598"> });</span>
<span class="line" id="L1599">}</span>
<span class="line" id="L1600"></span>
<span class="line" id="L1601"><span class="tok-kw">test</span> <span class="tok-str">"correctly parse pointer assignment"</span> {</span>
<span class="line" id="L1602"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"b.*=3;\n"</span>, &.{</span>
<span class="line" id="L1603"> .identifier,</span>
<span class="line" id="L1604"> .period_asterisk,</span>
<span class="line" id="L1605"> .equal,</span>
<span class="line" id="L1606"> .number_literal,</span>
<span class="line" id="L1607"> .semicolon,</span>
<span class="line" id="L1608"> });</span>
<span class="line" id="L1609">}</span>
<span class="line" id="L1610"></span>
<span class="line" id="L1611"><span class="tok-kw">test</span> <span class="tok-str">"correctly parse pointer dereference followed by asterisk"</span> {</span>
<span class="line" id="L1612"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"\"b\".* ** 10"</span>, &.{</span>
<span class="line" id="L1613"> .string_literal,</span>
<span class="line" id="L1614"> .period_asterisk,</span>
<span class="line" id="L1615"> .asterisk_asterisk,</span>
<span class="line" id="L1616"> .number_literal,</span>
<span class="line" id="L1617"> });</span>
<span class="line" id="L1618"></span>
<span class="line" id="L1619"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"(\"b\".*)** 10"</span>, &.{</span>
<span class="line" id="L1620"> .l_paren,</span>
<span class="line" id="L1621"> .string_literal,</span>
<span class="line" id="L1622"> .period_asterisk,</span>
<span class="line" id="L1623"> .r_paren,</span>
<span class="line" id="L1624"> .asterisk_asterisk,</span>
<span class="line" id="L1625"> .number_literal,</span>
<span class="line" id="L1626"> });</span>
<span class="line" id="L1627"></span>
<span class="line" id="L1628"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"\"b\".*** 10"</span>, &.{</span>
<span class="line" id="L1629"> .string_literal,</span>
<span class="line" id="L1630"> .invalid_periodasterisks,</span>
<span class="line" id="L1631"> .asterisk_asterisk,</span>
<span class="line" id="L1632"> .number_literal,</span>
<span class="line" id="L1633"> });</span>
<span class="line" id="L1634">}</span>
<span class="line" id="L1635"></span>
<span class="line" id="L1636"><span class="tok-kw">test</span> <span class="tok-str">"range literals"</span> {</span>
<span class="line" id="L1637"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0...9"</span>, &.{ .number_literal, .ellipsis3, .number_literal });</span>
<span class="line" id="L1638"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"'0'...'9'"</span>, &.{ .char_literal, .ellipsis3, .char_literal });</span>
<span class="line" id="L1639"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x00...0x09"</span>, &.{ .number_literal, .ellipsis3, .number_literal });</span>
<span class="line" id="L1640"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b00...0b11"</span>, &.{ .number_literal, .ellipsis3, .number_literal });</span>
<span class="line" id="L1641"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o00...0o11"</span>, &.{ .number_literal, .ellipsis3, .number_literal });</span>
<span class="line" id="L1642">}</span>
<span class="line" id="L1643"></span>
<span class="line" id="L1644"><span class="tok-kw">test</span> <span class="tok-str">"number literals decimal"</span> {</span>
<span class="line" id="L1645"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0"</span>, &.{.number_literal});</span>
<span class="line" id="L1646"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1"</span>, &.{.number_literal});</span>
<span class="line" id="L1647"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"2"</span>, &.{.number_literal});</span>
<span class="line" id="L1648"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"3"</span>, &.{.number_literal});</span>
<span class="line" id="L1649"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"4"</span>, &.{.number_literal});</span>
<span class="line" id="L1650"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"5"</span>, &.{.number_literal});</span>
<span class="line" id="L1651"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"6"</span>, &.{.number_literal});</span>
<span class="line" id="L1652"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"7"</span>, &.{.number_literal});</span>
<span class="line" id="L1653"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"8"</span>, &.{.number_literal});</span>
<span class="line" id="L1654"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"9"</span>, &.{.number_literal});</span>
<span class="line" id="L1655"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.."</span>, &.{ .number_literal, .ellipsis2 });</span>
<span class="line" id="L1656"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0a"</span>, &.{.number_literal});</span>
<span class="line" id="L1657"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"9b"</span>, &.{.number_literal});</span>
<span class="line" id="L1658"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1z"</span>, &.{.number_literal});</span>
<span class="line" id="L1659"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1z_1"</span>, &.{.number_literal});</span>
<span class="line" id="L1660"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"9z3"</span>, &.{.number_literal});</span>
<span class="line" id="L1661"></span>
<span class="line" id="L1662"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0_0"</span>, &.{.number_literal});</span>
<span class="line" id="L1663"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0001"</span>, &.{.number_literal});</span>
<span class="line" id="L1664"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"01234567890"</span>, &.{.number_literal});</span>
<span class="line" id="L1665"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"012_345_6789_0"</span>, &.{.number_literal});</span>
<span class="line" id="L1666"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0_1_2_3_4_5_6_7_8_9_0"</span>, &.{.number_literal});</span>
<span class="line" id="L1667"></span>
<span class="line" id="L1668"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"00_"</span>, &.{.number_literal});</span>
<span class="line" id="L1669"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0_0_"</span>, &.{.number_literal});</span>
<span class="line" id="L1670"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0__0"</span>, &.{.number_literal});</span>
<span class="line" id="L1671"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0_0f"</span>, &.{.number_literal});</span>
<span class="line" id="L1672"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0_0_f"</span>, &.{.number_literal});</span>
<span class="line" id="L1673"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0_0_f_00"</span>, &.{.number_literal});</span>
<span class="line" id="L1674"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1_,"</span>, &.{ .number_literal, .comma });</span>
<span class="line" id="L1675"></span>
<span class="line" id="L1676"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0.0"</span>, &.{.number_literal});</span>
<span class="line" id="L1677"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.0"</span>, &.{.number_literal});</span>
<span class="line" id="L1678"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"10.0"</span>, &.{.number_literal});</span>
<span class="line" id="L1679"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0e0"</span>, &.{.number_literal});</span>
<span class="line" id="L1680"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1e0"</span>, &.{.number_literal});</span>
<span class="line" id="L1681"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1e100"</span>, &.{.number_literal});</span>
<span class="line" id="L1682"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.0e100"</span>, &.{.number_literal});</span>
<span class="line" id="L1683"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.0e+100"</span>, &.{.number_literal});</span>
<span class="line" id="L1684"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.0e-100"</span>, &.{.number_literal});</span>
<span class="line" id="L1685"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1_0_0_0.0_0_0_0_0_1e1_0_0_0"</span>, &.{.number_literal});</span>
<span class="line" id="L1686"></span>
<span class="line" id="L1687"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1."</span>, &.{ .number_literal, .period });</span>
<span class="line" id="L1688"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1e"</span>, &.{.number_literal});</span>
<span class="line" id="L1689"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.e100"</span>, &.{.number_literal});</span>
<span class="line" id="L1690"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.0e1f0"</span>, &.{.number_literal});</span>
<span class="line" id="L1691"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.0p100"</span>, &.{.number_literal});</span>
<span class="line" id="L1692"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.0p-100"</span>, &.{.number_literal});</span>
<span class="line" id="L1693"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.0p1f0"</span>, &.{.number_literal});</span>
<span class="line" id="L1694"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.0_,"</span>, &.{ .number_literal, .comma });</span>
<span class="line" id="L1695"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1_.0"</span>, &.{.number_literal});</span>
<span class="line" id="L1696"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1._"</span>, &.{.number_literal});</span>
<span class="line" id="L1697"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.a"</span>, &.{.number_literal});</span>
<span class="line" id="L1698"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.z"</span>, &.{.number_literal});</span>
<span class="line" id="L1699"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1._0"</span>, &.{.number_literal});</span>
<span class="line" id="L1700"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.+"</span>, &.{ .number_literal, .period, .plus });</span>
<span class="line" id="L1701"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1._+"</span>, &.{ .number_literal, .plus });</span>
<span class="line" id="L1702"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1._e"</span>, &.{.number_literal});</span>
<span class="line" id="L1703"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.0e"</span>, &.{.number_literal});</span>
<span class="line" id="L1704"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.0e,"</span>, &.{ .number_literal, .comma });</span>
<span class="line" id="L1705"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.0e_"</span>, &.{.number_literal});</span>
<span class="line" id="L1706"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.0e+_"</span>, &.{.number_literal});</span>
<span class="line" id="L1707"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.0e-_"</span>, &.{.number_literal});</span>
<span class="line" id="L1708"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"1.0e0_+"</span>, &.{ .number_literal, .plus });</span>
<span class="line" id="L1709">}</span>
<span class="line" id="L1710"></span>
<span class="line" id="L1711"><span class="tok-kw">test</span> <span class="tok-str">"number literals binary"</span> {</span>
<span class="line" id="L1712"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b0"</span>, &.{.number_literal});</span>
<span class="line" id="L1713"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b1"</span>, &.{.number_literal});</span>
<span class="line" id="L1714"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b2"</span>, &.{.number_literal});</span>
<span class="line" id="L1715"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b3"</span>, &.{.number_literal});</span>
<span class="line" id="L1716"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b4"</span>, &.{.number_literal});</span>
<span class="line" id="L1717"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b5"</span>, &.{.number_literal});</span>
<span class="line" id="L1718"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b6"</span>, &.{.number_literal});</span>
<span class="line" id="L1719"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b7"</span>, &.{.number_literal});</span>
<span class="line" id="L1720"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b8"</span>, &.{.number_literal});</span>
<span class="line" id="L1721"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b9"</span>, &.{.number_literal});</span>
<span class="line" id="L1722"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0ba"</span>, &.{.number_literal});</span>
<span class="line" id="L1723"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0bb"</span>, &.{.number_literal});</span>
<span class="line" id="L1724"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0bc"</span>, &.{.number_literal});</span>
<span class="line" id="L1725"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0bd"</span>, &.{.number_literal});</span>
<span class="line" id="L1726"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0be"</span>, &.{.number_literal});</span>
<span class="line" id="L1727"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0bf"</span>, &.{.number_literal});</span>
<span class="line" id="L1728"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0bz"</span>, &.{.number_literal});</span>
<span class="line" id="L1729"></span>
<span class="line" id="L1730"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b0000_0000"</span>, &.{.number_literal});</span>
<span class="line" id="L1731"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b1111_1111"</span>, &.{.number_literal});</span>
<span class="line" id="L1732"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b10_10_10_10"</span>, &.{.number_literal});</span>
<span class="line" id="L1733"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b0_1_0_1_0_1_0_1"</span>, &.{.number_literal});</span>
<span class="line" id="L1734"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b1."</span>, &.{ .number_literal, .period });</span>
<span class="line" id="L1735"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b1.0"</span>, &.{.number_literal});</span>
<span class="line" id="L1736"></span>
<span class="line" id="L1737"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0B0"</span>, &.{.number_literal});</span>
<span class="line" id="L1738"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b_"</span>, &.{.number_literal});</span>
<span class="line" id="L1739"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b_0"</span>, &.{.number_literal});</span>
<span class="line" id="L1740"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b1_"</span>, &.{.number_literal});</span>
<span class="line" id="L1741"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b0__1"</span>, &.{.number_literal});</span>
<span class="line" id="L1742"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b0_1_"</span>, &.{.number_literal});</span>
<span class="line" id="L1743"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b1e"</span>, &.{.number_literal});</span>
<span class="line" id="L1744"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b1p"</span>, &.{.number_literal});</span>
<span class="line" id="L1745"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b1e0"</span>, &.{.number_literal});</span>
<span class="line" id="L1746"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b1p0"</span>, &.{.number_literal});</span>
<span class="line" id="L1747"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0b1_,"</span>, &.{ .number_literal, .comma });</span>
<span class="line" id="L1748">}</span>
<span class="line" id="L1749"></span>
<span class="line" id="L1750"><span class="tok-kw">test</span> <span class="tok-str">"number literals octal"</span> {</span>
<span class="line" id="L1751"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o0"</span>, &.{.number_literal});</span>
<span class="line" id="L1752"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o1"</span>, &.{.number_literal});</span>
<span class="line" id="L1753"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o2"</span>, &.{.number_literal});</span>
<span class="line" id="L1754"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o3"</span>, &.{.number_literal});</span>
<span class="line" id="L1755"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o4"</span>, &.{.number_literal});</span>
<span class="line" id="L1756"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o5"</span>, &.{.number_literal});</span>
<span class="line" id="L1757"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o6"</span>, &.{.number_literal});</span>
<span class="line" id="L1758"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o7"</span>, &.{.number_literal});</span>
<span class="line" id="L1759"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o8"</span>, &.{.number_literal});</span>
<span class="line" id="L1760"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o9"</span>, &.{.number_literal});</span>
<span class="line" id="L1761"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0oa"</span>, &.{.number_literal});</span>
<span class="line" id="L1762"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0ob"</span>, &.{.number_literal});</span>
<span class="line" id="L1763"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0oc"</span>, &.{.number_literal});</span>
<span class="line" id="L1764"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0od"</span>, &.{.number_literal});</span>
<span class="line" id="L1765"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0oe"</span>, &.{.number_literal});</span>
<span class="line" id="L1766"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0of"</span>, &.{.number_literal});</span>
<span class="line" id="L1767"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0oz"</span>, &.{.number_literal});</span>
<span class="line" id="L1768"></span>
<span class="line" id="L1769"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o01234567"</span>, &.{.number_literal});</span>
<span class="line" id="L1770"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o0123_4567"</span>, &.{.number_literal});</span>
<span class="line" id="L1771"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o01_23_45_67"</span>, &.{.number_literal});</span>
<span class="line" id="L1772"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o0_1_2_3_4_5_6_7"</span>, &.{.number_literal});</span>
<span class="line" id="L1773"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o7."</span>, &.{ .number_literal, .period });</span>
<span class="line" id="L1774"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o7.0"</span>, &.{.number_literal});</span>
<span class="line" id="L1775"></span>
<span class="line" id="L1776"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0O0"</span>, &.{.number_literal});</span>
<span class="line" id="L1777"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o_"</span>, &.{.number_literal});</span>
<span class="line" id="L1778"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o_0"</span>, &.{.number_literal});</span>
<span class="line" id="L1779"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o1_"</span>, &.{.number_literal});</span>
<span class="line" id="L1780"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o0__1"</span>, &.{.number_literal});</span>
<span class="line" id="L1781"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o0_1_"</span>, &.{.number_literal});</span>
<span class="line" id="L1782"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o1e"</span>, &.{.number_literal});</span>
<span class="line" id="L1783"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o1p"</span>, &.{.number_literal});</span>
<span class="line" id="L1784"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o1e0"</span>, &.{.number_literal});</span>
<span class="line" id="L1785"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o1p0"</span>, &.{.number_literal});</span>
<span class="line" id="L1786"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0o_,"</span>, &.{ .number_literal, .comma });</span>
<span class="line" id="L1787">}</span>
<span class="line" id="L1788"></span>
<span class="line" id="L1789"><span class="tok-kw">test</span> <span class="tok-str">"number literals hexadecimal"</span> {</span>
<span class="line" id="L1790"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0"</span>, &.{.number_literal});</span>
<span class="line" id="L1791"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x1"</span>, &.{.number_literal});</span>
<span class="line" id="L1792"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x2"</span>, &.{.number_literal});</span>
<span class="line" id="L1793"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x3"</span>, &.{.number_literal});</span>
<span class="line" id="L1794"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x4"</span>, &.{.number_literal});</span>
<span class="line" id="L1795"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x5"</span>, &.{.number_literal});</span>
<span class="line" id="L1796"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x6"</span>, &.{.number_literal});</span>
<span class="line" id="L1797"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x7"</span>, &.{.number_literal});</span>
<span class="line" id="L1798"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x8"</span>, &.{.number_literal});</span>
<span class="line" id="L1799"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x9"</span>, &.{.number_literal});</span>
<span class="line" id="L1800"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xa"</span>, &.{.number_literal});</span>
<span class="line" id="L1801"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xb"</span>, &.{.number_literal});</span>
<span class="line" id="L1802"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xc"</span>, &.{.number_literal});</span>
<span class="line" id="L1803"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xd"</span>, &.{.number_literal});</span>
<span class="line" id="L1804"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xe"</span>, &.{.number_literal});</span>
<span class="line" id="L1805"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xf"</span>, &.{.number_literal});</span>
<span class="line" id="L1806"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xA"</span>, &.{.number_literal});</span>
<span class="line" id="L1807"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xB"</span>, &.{.number_literal});</span>
<span class="line" id="L1808"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xC"</span>, &.{.number_literal});</span>
<span class="line" id="L1809"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xD"</span>, &.{.number_literal});</span>
<span class="line" id="L1810"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xE"</span>, &.{.number_literal});</span>
<span class="line" id="L1811"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xF"</span>, &.{.number_literal});</span>
<span class="line" id="L1812"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0z"</span>, &.{.number_literal});</span>
<span class="line" id="L1813"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xz"</span>, &.{.number_literal});</span>
<span class="line" id="L1814"></span>
<span class="line" id="L1815"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0123456789ABCDEF"</span>, &.{.number_literal});</span>
<span class="line" id="L1816"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0123_4567_89AB_CDEF"</span>, &.{.number_literal});</span>
<span class="line" id="L1817"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x01_23_45_67_89AB_CDE_F"</span>, &.{.number_literal});</span>
<span class="line" id="L1818"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0_1_2_3_4_5_6_7_8_9_A_B_C_D_E_F"</span>, &.{.number_literal});</span>
<span class="line" id="L1819"></span>
<span class="line" id="L1820"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0X0"</span>, &.{.number_literal});</span>
<span class="line" id="L1821"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x_"</span>, &.{.number_literal});</span>
<span class="line" id="L1822"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x_1"</span>, &.{.number_literal});</span>
<span class="line" id="L1823"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x1_"</span>, &.{.number_literal});</span>
<span class="line" id="L1824"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0__1"</span>, &.{.number_literal});</span>
<span class="line" id="L1825"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0_1_"</span>, &.{.number_literal});</span>
<span class="line" id="L1826"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x_,"</span>, &.{ .number_literal, .comma });</span>
<span class="line" id="L1827"></span>
<span class="line" id="L1828"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x1.0"</span>, &.{.number_literal});</span>
<span class="line" id="L1829"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xF.0"</span>, &.{.number_literal});</span>
<span class="line" id="L1830"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xF.F"</span>, &.{.number_literal});</span>
<span class="line" id="L1831"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xF.Fp0"</span>, &.{.number_literal});</span>
<span class="line" id="L1832"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xF.FP0"</span>, &.{.number_literal});</span>
<span class="line" id="L1833"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x1p0"</span>, &.{.number_literal});</span>
<span class="line" id="L1834"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xfp0"</span>, &.{.number_literal});</span>
<span class="line" id="L1835"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x1.0+0xF.0"</span>, &.{ .number_literal, .plus, .number_literal });</span>
<span class="line" id="L1836"></span>
<span class="line" id="L1837"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x1."</span>, &.{ .number_literal, .period });</span>
<span class="line" id="L1838"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xF."</span>, &.{ .number_literal, .period });</span>
<span class="line" id="L1839"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x1.+0xF."</span>, &.{ .number_literal, .period, .plus, .number_literal, .period });</span>
<span class="line" id="L1840"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xff.p10"</span>, &.{.number_literal});</span>
<span class="line" id="L1841"></span>
<span class="line" id="L1842"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0123456.789ABCDEF"</span>, &.{.number_literal});</span>
<span class="line" id="L1843"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0_123_456.789_ABC_DEF"</span>, &.{.number_literal});</span>
<span class="line" id="L1844"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0_1_2_3_4_5_6.7_8_9_A_B_C_D_E_F"</span>, &.{.number_literal});</span>
<span class="line" id="L1845"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0p0"</span>, &.{.number_literal});</span>
<span class="line" id="L1846"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0.0p0"</span>, &.{.number_literal});</span>
<span class="line" id="L1847"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xff.ffp10"</span>, &.{.number_literal});</span>
<span class="line" id="L1848"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xff.ffP10"</span>, &.{.number_literal});</span>
<span class="line" id="L1849"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xffp10"</span>, &.{.number_literal});</span>
<span class="line" id="L1850"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xff_ff.ff_ffp1_0_0_0"</span>, &.{.number_literal});</span>
<span class="line" id="L1851"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xf_f_f_f.f_f_f_fp+1_000"</span>, &.{.number_literal});</span>
<span class="line" id="L1852"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xf_f_f_f.f_f_f_fp-1_00_0"</span>, &.{.number_literal});</span>
<span class="line" id="L1853"></span>
<span class="line" id="L1854"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x1e"</span>, &.{.number_literal});</span>
<span class="line" id="L1855"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x1e0"</span>, &.{.number_literal});</span>
<span class="line" id="L1856"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x1p"</span>, &.{.number_literal});</span>
<span class="line" id="L1857"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xfp0z1"</span>, &.{.number_literal});</span>
<span class="line" id="L1858"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0xff.ffpff"</span>, &.{.number_literal});</span>
<span class="line" id="L1859"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0.p"</span>, &.{.number_literal});</span>
<span class="line" id="L1860"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0.z"</span>, &.{.number_literal});</span>
<span class="line" id="L1861"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0._"</span>, &.{.number_literal});</span>
<span class="line" id="L1862"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0_.0"</span>, &.{.number_literal});</span>
<span class="line" id="L1863"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0_.0.0"</span>, &.{ .number_literal, .period, .number_literal });</span>
<span class="line" id="L1864"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0._0"</span>, &.{.number_literal});</span>
<span class="line" id="L1865"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0.0_"</span>, &.{.number_literal});</span>
<span class="line" id="L1866"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0_p0"</span>, &.{.number_literal});</span>
<span class="line" id="L1867"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0_.p0"</span>, &.{.number_literal});</span>
<span class="line" id="L1868"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0._p0"</span>, &.{.number_literal});</span>
<span class="line" id="L1869"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0.0_p0"</span>, &.{.number_literal});</span>
<span class="line" id="L1870"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0._0p0"</span>, &.{.number_literal});</span>
<span class="line" id="L1871"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0.0p_0"</span>, &.{.number_literal});</span>
<span class="line" id="L1872"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0.0p+_0"</span>, &.{.number_literal});</span>
<span class="line" id="L1873"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0.0p-_0"</span>, &.{.number_literal});</span>
<span class="line" id="L1874"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"0x0.0p0_"</span>, &.{.number_literal});</span>
<span class="line" id="L1875">}</span>
<span class="line" id="L1876"></span>
<span class="line" id="L1877"><span class="tok-kw">test</span> <span class="tok-str">"multi line string literal with only 1 backslash"</span> {</span>
<span class="line" id="L1878"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"x \\\n;"</span>, &.{ .identifier, .invalid, .semicolon });</span>
<span class="line" id="L1879">}</span>
<span class="line" id="L1880"></span>
<span class="line" id="L1881"><span class="tok-kw">test</span> <span class="tok-str">"invalid builtin identifiers"</span> {</span>
<span class="line" id="L1882"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"@()"</span>, &.{ .invalid, .l_paren, .r_paren });</span>
<span class="line" id="L1883"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"@0()"</span>, &.{ .invalid, .number_literal, .l_paren, .r_paren });</span>
<span class="line" id="L1884">}</span>
<span class="line" id="L1885"></span>
<span class="line" id="L1886"><span class="tok-kw">test</span> <span class="tok-str">"invalid token with unfinished escape right before eof"</span> {</span>
<span class="line" id="L1887"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"\"\\"</span>, &.{.invalid});</span>
<span class="line" id="L1888"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"'\\"</span>, &.{.invalid});</span>
<span class="line" id="L1889"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"'\\u"</span>, &.{.invalid});</span>
<span class="line" id="L1890">}</span>
<span class="line" id="L1891"></span>
<span class="line" id="L1892"><span class="tok-kw">test</span> <span class="tok-str">"saturating operators"</span> {</span>
<span class="line" id="L1893"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"<<"</span>, &.{.angle_bracket_angle_bracket_left});</span>
<span class="line" id="L1894"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"<<|"</span>, &.{.angle_bracket_angle_bracket_left_pipe});</span>
<span class="line" id="L1895"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"<<|="</span>, &.{.angle_bracket_angle_bracket_left_pipe_equal});</span>
<span class="line" id="L1896"></span>
<span class="line" id="L1897"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"*"</span>, &.{.asterisk});</span>
<span class="line" id="L1898"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"*|"</span>, &.{.asterisk_pipe});</span>
<span class="line" id="L1899"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"*|="</span>, &.{.asterisk_pipe_equal});</span>
<span class="line" id="L1900"></span>
<span class="line" id="L1901"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"+"</span>, &.{.plus});</span>
<span class="line" id="L1902"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"+|"</span>, &.{.plus_pipe});</span>
<span class="line" id="L1903"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"+|="</span>, &.{.plus_pipe_equal});</span>
<span class="line" id="L1904"></span>
<span class="line" id="L1905"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"-"</span>, &.{.minus});</span>
<span class="line" id="L1906"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"-|"</span>, &.{.minus_pipe});</span>
<span class="line" id="L1907"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"-|="</span>, &.{.minus_pipe_equal});</span>
<span class="line" id="L1908">}</span>
<span class="line" id="L1909"></span>
<span class="line" id="L1910"><span class="tok-kw">test</span> <span class="tok-str">"null byte before eof"</span> {</span>
<span class="line" id="L1911"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"123 \x00 456"</span>, &.{ .number_literal, .invalid, .number_literal });</span>
<span class="line" id="L1912"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"//\x00"</span>, &.{.invalid});</span>
<span class="line" id="L1913"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"\\\\\x00"</span>, &.{ .multiline_string_literal_line, .invalid });</span>
<span class="line" id="L1914"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"\x00"</span>, &.{.invalid});</span>
<span class="line" id="L1915"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"// NUL\x00\n"</span>, &.{.invalid});</span>
<span class="line" id="L1916"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"///\x00\n"</span>, &.{ .doc_comment, .invalid });</span>
<span class="line" id="L1917"> <span class="tok-kw">try</span> testTokenize(<span class="tok-str">"/// NUL\x00\n"</span>, &.{ .doc_comment, .invalid });</span>
<span class="line" id="L1918">}</span>
<span class="line" id="L1919"></span>
<span class="line" id="L1920"><span class="tok-kw">fn</span> <span class="tok-fn">testTokenize</span>(source: [:<span class="tok-number">0</span>]<span class="tok-kw">const</span> <span class="tok-type">u8</span>, expected_token_tags: []<span class="tok-kw">const</span> Token.Tag) !<span class="tok-type">void</span> {</span>
<span class="line" id="L1921"> <span class="tok-kw">var</span> tokenizer = Tokenizer.init(source);</span>
<span class="line" id="L1922"> <span class="tok-kw">for</span> (expected_token_tags) |expected_token_tag| {</span>
<span class="line" id="L1923"> <span class="tok-kw">const</span> token = tokenizer.next();</span>
<span class="line" id="L1924"> <span class="tok-kw">try</span> std.testing.expectEqual(expected_token_tag, token.tag);</span>
<span class="line" id="L1925"> }</span>
<span class="line" id="L1926"> <span class="tok-kw">const</span> last_token = tokenizer.next();</span>
<span class="line" id="L1927"> <span class="tok-kw">try</span> std.testing.expectEqual(Token.Tag.eof, last_token.tag);</span>
<span class="line" id="L1928"> <span class="tok-kw">try</span> std.testing.expectEqual(source.len, last_token.loc.start);</span>
<span class="line" id="L1929"> <span class="tok-kw">try</span> std.testing.expectEqual(source.len, last_token.loc.end);</span>
<span class="line" id="L1930">}</span>
<span class="line" id="L1931"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/zig | repos/yazap/docs/src/std/zig/system/arm.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> Target = std.Target;</span>
<span class="line" id="L3"></span>
<span class="line" id="L4"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> CoreInfo = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L5"> architecture: <span class="tok-type">u8</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L6"> implementer: <span class="tok-type">u8</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L7"> variant: <span class="tok-type">u8</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L8"> part: <span class="tok-type">u16</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L9">};</span>
<span class="line" id="L10"></span>
<span class="line" id="L11"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> cpu_models = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L12"> <span class="tok-comment">// Shorthands to simplify the tables below.</span>
</span>
<span class="line" id="L13"> <span class="tok-kw">const</span> A32 = Target.arm.cpu;</span>
<span class="line" id="L14"> <span class="tok-kw">const</span> A64 = Target.aarch64.cpu;</span>
<span class="line" id="L15"></span>
<span class="line" id="L16"> <span class="tok-kw">const</span> E = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L17"> part: <span class="tok-type">u16</span>,</span>
<span class="line" id="L18"> variant: ?<span class="tok-type">u8</span> = <span class="tok-null">null</span>, <span class="tok-comment">// null if matches any variant</span>
</span>
<span class="line" id="L19"> m32: ?*<span class="tok-kw">const</span> Target.Cpu.Model = <span class="tok-null">null</span>,</span>
<span class="line" id="L20"> m64: ?*<span class="tok-kw">const</span> Target.Cpu.Model = <span class="tok-null">null</span>,</span>
<span class="line" id="L21"> };</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"> <span class="tok-comment">// implementer = 0x41</span>
</span>
<span class="line" id="L24"> <span class="tok-kw">const</span> ARM = [_]E{</span>
<span class="line" id="L25"> E{ .part = <span class="tok-number">0x926</span>, .m32 = &A32.arm926ej_s, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L26"> E{ .part = <span class="tok-number">0xb02</span>, .m32 = &A32.mpcore, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L27"> E{ .part = <span class="tok-number">0xb36</span>, .m32 = &A32.arm1136j_s, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L28"> E{ .part = <span class="tok-number">0xb56</span>, .m32 = &A32.arm1156t2_s, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L29"> E{ .part = <span class="tok-number">0xb76</span>, .m32 = &A32.arm1176jz_s, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L30"> E{ .part = <span class="tok-number">0xc05</span>, .m32 = &A32.cortex_a5, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L31"> E{ .part = <span class="tok-number">0xc07</span>, .m32 = &A32.cortex_a7, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L32"> E{ .part = <span class="tok-number">0xc08</span>, .m32 = &A32.cortex_a8, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L33"> E{ .part = <span class="tok-number">0xc09</span>, .m32 = &A32.cortex_a9, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L34"> E{ .part = <span class="tok-number">0xc0d</span>, .m32 = &A32.cortex_a17, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L35"> E{ .part = <span class="tok-number">0xc0f</span>, .m32 = &A32.cortex_a15, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L36"> E{ .part = <span class="tok-number">0xc0e</span>, .m32 = &A32.cortex_a17, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L37"> E{ .part = <span class="tok-number">0xc14</span>, .m32 = &A32.cortex_r4, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L38"> E{ .part = <span class="tok-number">0xc15</span>, .m32 = &A32.cortex_r5, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L39"> E{ .part = <span class="tok-number">0xc17</span>, .m32 = &A32.cortex_r7, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L40"> E{ .part = <span class="tok-number">0xc18</span>, .m32 = &A32.cortex_r8, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L41"> E{ .part = <span class="tok-number">0xc20</span>, .m32 = &A32.cortex_m0, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L42"> E{ .part = <span class="tok-number">0xc21</span>, .m32 = &A32.cortex_m1, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L43"> E{ .part = <span class="tok-number">0xc23</span>, .m32 = &A32.cortex_m3, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L44"> E{ .part = <span class="tok-number">0xc24</span>, .m32 = &A32.cortex_m4, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L45"> E{ .part = <span class="tok-number">0xc27</span>, .m32 = &A32.cortex_m7, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L46"> E{ .part = <span class="tok-number">0xc60</span>, .m32 = &A32.cortex_m0plus, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L47"> E{ .part = <span class="tok-number">0xd01</span>, .m32 = &A32.cortex_a32, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L48"> E{ .part = <span class="tok-number">0xd03</span>, .m32 = &A32.cortex_a53, .m64 = &A64.cortex_a53 },</span>
<span class="line" id="L49"> E{ .part = <span class="tok-number">0xd04</span>, .m32 = &A32.cortex_a35, .m64 = &A64.cortex_a35 },</span>
<span class="line" id="L50"> E{ .part = <span class="tok-number">0xd05</span>, .m32 = &A32.cortex_a55, .m64 = &A64.cortex_a55 },</span>
<span class="line" id="L51"> E{ .part = <span class="tok-number">0xd07</span>, .m32 = &A32.cortex_a57, .m64 = &A64.cortex_a57 },</span>
<span class="line" id="L52"> E{ .part = <span class="tok-number">0xd08</span>, .m32 = &A32.cortex_a72, .m64 = &A64.cortex_a72 },</span>
<span class="line" id="L53"> E{ .part = <span class="tok-number">0xd09</span>, .m32 = &A32.cortex_a73, .m64 = &A64.cortex_a73 },</span>
<span class="line" id="L54"> E{ .part = <span class="tok-number">0xd0a</span>, .m32 = &A32.cortex_a75, .m64 = &A64.cortex_a75 },</span>
<span class="line" id="L55"> E{ .part = <span class="tok-number">0xd0b</span>, .m32 = &A32.cortex_a76, .m64 = &A64.cortex_a76 },</span>
<span class="line" id="L56"> E{ .part = <span class="tok-number">0xd0c</span>, .m32 = &A32.neoverse_n1, .m64 = &A64.neoverse_n1 },</span>
<span class="line" id="L57"> E{ .part = <span class="tok-number">0xd0d</span>, .m32 = &A32.cortex_a77, .m64 = &A64.cortex_a77 },</span>
<span class="line" id="L58"> E{ .part = <span class="tok-number">0xd13</span>, .m32 = &A32.cortex_r52, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L59"> E{ .part = <span class="tok-number">0xd20</span>, .m32 = &A32.cortex_m23, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L60"> E{ .part = <span class="tok-number">0xd21</span>, .m32 = &A32.cortex_m33, .m64 = <span class="tok-null">null</span> },</span>
<span class="line" id="L61"> E{ .part = <span class="tok-number">0xd41</span>, .m32 = &A32.cortex_a78, .m64 = &A64.cortex_a78 },</span>
<span class="line" id="L62"> E{ .part = <span class="tok-number">0xd4b</span>, .m32 = &A32.cortex_a78c, .m64 = &A64.cortex_a78c },</span>
<span class="line" id="L63"> E{ .part = <span class="tok-number">0xd4c</span>, .m32 = &A32.cortex_x1c, .m64 = &A64.cortex_x1c },</span>
<span class="line" id="L64"> E{ .part = <span class="tok-number">0xd44</span>, .m32 = &A32.cortex_x1, .m64 = &A64.cortex_x1 },</span>
<span class="line" id="L65"> E{ .part = <span class="tok-number">0xd02</span>, .m64 = &A64.cortex_a34 },</span>
<span class="line" id="L66"> E{ .part = <span class="tok-number">0xd06</span>, .m64 = &A64.cortex_a65 },</span>
<span class="line" id="L67"> E{ .part = <span class="tok-number">0xd43</span>, .m64 = &A64.cortex_a65ae },</span>
<span class="line" id="L68"> };</span>
<span class="line" id="L69"> <span class="tok-comment">// implementer = 0x42</span>
</span>
<span class="line" id="L70"> <span class="tok-kw">const</span> Broadcom = [_]E{</span>
<span class="line" id="L71"> E{ .part = <span class="tok-number">0x516</span>, .m64 = &A64.thunderx2t99 },</span>
<span class="line" id="L72"> };</span>
<span class="line" id="L73"> <span class="tok-comment">// implementer = 0x43</span>
</span>
<span class="line" id="L74"> <span class="tok-kw">const</span> Cavium = [_]E{</span>
<span class="line" id="L75"> E{ .part = <span class="tok-number">0x0a0</span>, .m64 = &A64.thunderx },</span>
<span class="line" id="L76"> E{ .part = <span class="tok-number">0x0a2</span>, .m64 = &A64.thunderxt81 },</span>
<span class="line" id="L77"> E{ .part = <span class="tok-number">0x0a3</span>, .m64 = &A64.thunderxt83 },</span>
<span class="line" id="L78"> E{ .part = <span class="tok-number">0x0a1</span>, .m64 = &A64.thunderxt88 },</span>
<span class="line" id="L79"> E{ .part = <span class="tok-number">0x0af</span>, .m64 = &A64.thunderx2t99 },</span>
<span class="line" id="L80"> };</span>
<span class="line" id="L81"> <span class="tok-comment">// implementer = 0x46</span>
</span>
<span class="line" id="L82"> <span class="tok-kw">const</span> Fujitsu = [_]E{</span>
<span class="line" id="L83"> E{ .part = <span class="tok-number">0x001</span>, .m64 = &A64.a64fx },</span>
<span class="line" id="L84"> };</span>
<span class="line" id="L85"> <span class="tok-comment">// implementer = 0x48</span>
</span>
<span class="line" id="L86"> <span class="tok-kw">const</span> HiSilicon = [_]E{</span>
<span class="line" id="L87"> E{ .part = <span class="tok-number">0xd01</span>, .m64 = &A64.tsv110 },</span>
<span class="line" id="L88"> };</span>
<span class="line" id="L89"> <span class="tok-comment">// implementer = 0x4e</span>
</span>
<span class="line" id="L90"> <span class="tok-kw">const</span> Nvidia = [_]E{</span>
<span class="line" id="L91"> E{ .part = <span class="tok-number">0x004</span>, .m64 = &A64.carmel },</span>
<span class="line" id="L92"> };</span>
<span class="line" id="L93"> <span class="tok-comment">// implementer = 0x50</span>
</span>
<span class="line" id="L94"> <span class="tok-kw">const</span> Ampere = [_]E{</span>
<span class="line" id="L95"> E{ .part = <span class="tok-number">0x000</span>, .variant = <span class="tok-number">3</span>, .m64 = &A64.emag },</span>
<span class="line" id="L96"> E{ .part = <span class="tok-number">0x000</span>, .m64 = &A64.xgene1 },</span>
<span class="line" id="L97"> };</span>
<span class="line" id="L98"> <span class="tok-comment">// implementer = 0x51</span>
</span>
<span class="line" id="L99"> <span class="tok-kw">const</span> Qualcomm = [_]E{</span>
<span class="line" id="L100"> E{ .part = <span class="tok-number">0x06f</span>, .m32 = &A32.krait },</span>
<span class="line" id="L101"> E{ .part = <span class="tok-number">0x201</span>, .m64 = &A64.kryo, .m32 = &A64.kryo },</span>
<span class="line" id="L102"> E{ .part = <span class="tok-number">0x205</span>, .m64 = &A64.kryo, .m32 = &A64.kryo },</span>
<span class="line" id="L103"> E{ .part = <span class="tok-number">0x211</span>, .m64 = &A64.kryo, .m32 = &A64.kryo },</span>
<span class="line" id="L104"> E{ .part = <span class="tok-number">0x800</span>, .m64 = &A64.cortex_a73, .m32 = &A64.cortex_a73 },</span>
<span class="line" id="L105"> E{ .part = <span class="tok-number">0x801</span>, .m64 = &A64.cortex_a73, .m32 = &A64.cortex_a73 },</span>
<span class="line" id="L106"> E{ .part = <span class="tok-number">0x802</span>, .m64 = &A64.cortex_a75, .m32 = &A64.cortex_a75 },</span>
<span class="line" id="L107"> E{ .part = <span class="tok-number">0x803</span>, .m64 = &A64.cortex_a75, .m32 = &A64.cortex_a75 },</span>
<span class="line" id="L108"> E{ .part = <span class="tok-number">0x804</span>, .m64 = &A64.cortex_a76, .m32 = &A64.cortex_a76 },</span>
<span class="line" id="L109"> E{ .part = <span class="tok-number">0x805</span>, .m64 = &A64.cortex_a76, .m32 = &A64.cortex_a76 },</span>
<span class="line" id="L110"> E{ .part = <span class="tok-number">0xc00</span>, .m64 = &A64.falkor },</span>
<span class="line" id="L111"> E{ .part = <span class="tok-number">0xc01</span>, .m64 = &A64.saphira },</span>
<span class="line" id="L112"> };</span>
<span class="line" id="L113"></span>
<span class="line" id="L114"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isKnown</span>(core: CoreInfo, is_64bit: <span class="tok-type">bool</span>) ?*<span class="tok-kw">const</span> Target.Cpu.Model {</span>
<span class="line" id="L115"> <span class="tok-kw">const</span> models = <span class="tok-kw">switch</span> (core.implementer) {</span>
<span class="line" id="L116"> <span class="tok-number">0x41</span> => &ARM,</span>
<span class="line" id="L117"> <span class="tok-number">0x42</span> => &Broadcom,</span>
<span class="line" id="L118"> <span class="tok-number">0x43</span> => &Cavium,</span>
<span class="line" id="L119"> <span class="tok-number">0x46</span> => &Fujitsu,</span>
<span class="line" id="L120"> <span class="tok-number">0x48</span> => &HiSilicon,</span>
<span class="line" id="L121"> <span class="tok-number">0x50</span> => &Ampere,</span>
<span class="line" id="L122"> <span class="tok-number">0x51</span> => &Qualcomm,</span>
<span class="line" id="L123"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-null">null</span>,</span>
<span class="line" id="L124"> };</span>
<span class="line" id="L125"></span>
<span class="line" id="L126"> <span class="tok-kw">for</span> (models) |model| {</span>
<span class="line" id="L127"> <span class="tok-kw">if</span> (model.part == core.part <span class="tok-kw">and</span></span>
<span class="line" id="L128"> (model.variant == <span class="tok-null">null</span> <span class="tok-kw">or</span> model.variant.? == core.variant))</span>
<span class="line" id="L129"> <span class="tok-kw">return</span> <span class="tok-kw">if</span> (is_64bit) model.m64 <span class="tok-kw">else</span> model.m32;</span>
<span class="line" id="L130"> }</span>
<span class="line" id="L131"></span>
<span class="line" id="L132"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L133"> }</span>
<span class="line" id="L134">};</span>
<span class="line" id="L135"></span>
<span class="line" id="L136"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> aarch64 = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L137"> <span class="tok-kw">fn</span> <span class="tok-fn">setFeature</span>(cpu: *Target.Cpu, feature: Target.aarch64.Feature, enabled: <span class="tok-type">bool</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L138"> <span class="tok-kw">const</span> idx = <span class="tok-builtin">@as</span>(Target.Cpu.Feature.Set.Index, <span class="tok-builtin">@intFromEnum</span>(feature));</span>
<span class="line" id="L139"></span>
<span class="line" id="L140"> <span class="tok-kw">if</span> (enabled) cpu.features.addFeature(idx) <span class="tok-kw">else</span> cpu.features.removeFeature(idx);</span>
<span class="line" id="L141"> }</span>
<span class="line" id="L142"></span>
<span class="line" id="L143"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">bitField</span>(input: <span class="tok-type">u64</span>, offset: <span class="tok-type">u6</span>) <span class="tok-type">u4</span> {</span>
<span class="line" id="L144"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">u4</span>, <span class="tok-builtin">@truncate</span>(input >> offset));</span>
<span class="line" id="L145"> }</span>
<span class="line" id="L146"></span>
<span class="line" id="L147"> <span class="tok-comment">/// Input array should consist of readouts from 12 system registers such that:</span></span>
<span class="line" id="L148"> <span class="tok-comment">/// 0 -> MIDR_EL1</span></span>
<span class="line" id="L149"> <span class="tok-comment">/// 1 -> ID_AA64PFR0_EL1</span></span>
<span class="line" id="L150"> <span class="tok-comment">/// 2 -> ID_AA64PFR1_EL1</span></span>
<span class="line" id="L151"> <span class="tok-comment">/// 3 -> ID_AA64DFR0_EL1</span></span>
<span class="line" id="L152"> <span class="tok-comment">/// 4 -> ID_AA64DFR1_EL1</span></span>
<span class="line" id="L153"> <span class="tok-comment">/// 5 -> ID_AA64AFR0_EL1</span></span>
<span class="line" id="L154"> <span class="tok-comment">/// 6 -> ID_AA64AFR1_EL1</span></span>
<span class="line" id="L155"> <span class="tok-comment">/// 7 -> ID_AA64ISAR0_EL1</span></span>
<span class="line" id="L156"> <span class="tok-comment">/// 8 -> ID_AA64ISAR1_EL1</span></span>
<span class="line" id="L157"> <span class="tok-comment">/// 9 -> ID_AA64MMFR0_EL1</span></span>
<span class="line" id="L158"> <span class="tok-comment">/// 10 -> ID_AA64MMFR1_EL1</span></span>
<span class="line" id="L159"> <span class="tok-comment">/// 11 -> ID_AA64MMFR2_EL1</span></span>
<span class="line" id="L160"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">detectNativeCpuAndFeatures</span>(arch: Target.Cpu.Arch, registers: [<span class="tok-number">12</span>]<span class="tok-type">u64</span>) ?Target.Cpu {</span>
<span class="line" id="L161"> <span class="tok-kw">const</span> info = detectNativeCoreInfo(registers[<span class="tok-number">0</span>]);</span>
<span class="line" id="L162"> <span class="tok-kw">const</span> model = cpu_models.isKnown(info, <span class="tok-null">true</span>) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L163"></span>
<span class="line" id="L164"> <span class="tok-kw">var</span> cpu = Target.Cpu{</span>
<span class="line" id="L165"> .arch = arch,</span>
<span class="line" id="L166"> .model = model,</span>
<span class="line" id="L167"> .features = Target.Cpu.Feature.Set.empty,</span>
<span class="line" id="L168"> };</span>
<span class="line" id="L169"></span>
<span class="line" id="L170"> detectNativeCpuFeatures(&cpu, registers[<span class="tok-number">1</span>..<span class="tok-number">12</span>]);</span>
<span class="line" id="L171"> addInstructionFusions(&cpu, info);</span>
<span class="line" id="L172"></span>
<span class="line" id="L173"> <span class="tok-kw">return</span> cpu;</span>
<span class="line" id="L174"> }</span>
<span class="line" id="L175"></span>
<span class="line" id="L176"> <span class="tok-comment">/// Takes readout of MIDR_EL1 register as input.</span></span>
<span class="line" id="L177"> <span class="tok-kw">fn</span> <span class="tok-fn">detectNativeCoreInfo</span>(midr: <span class="tok-type">u64</span>) CoreInfo {</span>
<span class="line" id="L178"> <span class="tok-kw">var</span> info = CoreInfo{</span>
<span class="line" id="L179"> .implementer = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(midr >> <span class="tok-number">24</span>)),</span>
<span class="line" id="L180"> .part = <span class="tok-builtin">@as</span>(<span class="tok-type">u12</span>, <span class="tok-builtin">@truncate</span>(midr >> <span class="tok-number">4</span>)),</span>
<span class="line" id="L181"> };</span>
<span class="line" id="L182"></span>
<span class="line" id="L183"> blk: {</span>
<span class="line" id="L184"> <span class="tok-kw">if</span> (info.implementer == <span class="tok-number">0x41</span>) {</span>
<span class="line" id="L185"> <span class="tok-comment">// ARM Ltd.</span>
</span>
<span class="line" id="L186"> <span class="tok-kw">const</span> special_bits = <span class="tok-builtin">@as</span>(<span class="tok-type">u4</span>, <span class="tok-builtin">@truncate</span>(info.part >> <span class="tok-number">8</span>));</span>
<span class="line" id="L187"> <span class="tok-kw">if</span> (special_bits == <span class="tok-number">0x0</span> <span class="tok-kw">or</span> special_bits == <span class="tok-number">0x7</span>) {</span>
<span class="line" id="L188"> <span class="tok-comment">// TODO Variant and arch encoded differently.</span>
</span>
<span class="line" id="L189"> <span class="tok-kw">break</span> :blk;</span>
<span class="line" id="L190"> }</span>
<span class="line" id="L191"> }</span>
<span class="line" id="L192"></span>
<span class="line" id="L193"> info.variant |= <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(<span class="tok-builtin">@as</span>(<span class="tok-type">u4</span>, <span class="tok-builtin">@truncate</span>(midr >> <span class="tok-number">20</span>)))) << <span class="tok-number">4</span>;</span>
<span class="line" id="L194"> info.variant |= <span class="tok-builtin">@as</span>(<span class="tok-type">u4</span>, <span class="tok-builtin">@truncate</span>(midr));</span>
<span class="line" id="L195"> info.architecture = <span class="tok-builtin">@as</span>(<span class="tok-type">u4</span>, <span class="tok-builtin">@truncate</span>(midr >> <span class="tok-number">16</span>));</span>
<span class="line" id="L196"> }</span>
<span class="line" id="L197"></span>
<span class="line" id="L198"> <span class="tok-kw">return</span> info;</span>
<span class="line" id="L199"> }</span>
<span class="line" id="L200"></span>
<span class="line" id="L201"> <span class="tok-comment">/// Input array should consist of readouts from 11 system registers such that:</span></span>
<span class="line" id="L202"> <span class="tok-comment">/// 0 -> ID_AA64PFR0_EL1</span></span>
<span class="line" id="L203"> <span class="tok-comment">/// 1 -> ID_AA64PFR1_EL1</span></span>
<span class="line" id="L204"> <span class="tok-comment">/// 2 -> ID_AA64DFR0_EL1</span></span>
<span class="line" id="L205"> <span class="tok-comment">/// 3 -> ID_AA64DFR1_EL1</span></span>
<span class="line" id="L206"> <span class="tok-comment">/// 4 -> ID_AA64AFR0_EL1</span></span>
<span class="line" id="L207"> <span class="tok-comment">/// 5 -> ID_AA64AFR1_EL1</span></span>
<span class="line" id="L208"> <span class="tok-comment">/// 6 -> ID_AA64ISAR0_EL1</span></span>
<span class="line" id="L209"> <span class="tok-comment">/// 7 -> ID_AA64ISAR1_EL1</span></span>
<span class="line" id="L210"> <span class="tok-comment">/// 8 -> ID_AA64MMFR0_EL1</span></span>
<span class="line" id="L211"> <span class="tok-comment">/// 9 -> ID_AA64MMFR1_EL1</span></span>
<span class="line" id="L212"> <span class="tok-comment">/// 10 -> ID_AA64MMFR2_EL1</span></span>
<span class="line" id="L213"> <span class="tok-kw">fn</span> <span class="tok-fn">detectNativeCpuFeatures</span>(cpu: *Target.Cpu, registers: *<span class="tok-kw">const</span> [<span class="tok-number">11</span>]<span class="tok-type">u64</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L214"> <span class="tok-comment">// ID_AA64PFR0_EL1</span>
</span>
<span class="line" id="L215"> setFeature(cpu, .dit, bitField(registers[<span class="tok-number">0</span>], <span class="tok-number">48</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L216"> setFeature(cpu, .am, bitField(registers[<span class="tok-number">0</span>], <span class="tok-number">44</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L217"> setFeature(cpu, .amvs, bitField(registers[<span class="tok-number">0</span>], <span class="tok-number">44</span>) >= <span class="tok-number">2</span>);</span>
<span class="line" id="L218"> setFeature(cpu, .mpam, bitField(registers[<span class="tok-number">0</span>], <span class="tok-number">40</span>) >= <span class="tok-number">1</span>); <span class="tok-comment">// MPAM v1.0</span>
</span>
<span class="line" id="L219"> setFeature(cpu, .sel2, bitField(registers[<span class="tok-number">0</span>], <span class="tok-number">36</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L220"> setFeature(cpu, .sve, bitField(registers[<span class="tok-number">0</span>], <span class="tok-number">32</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L221"> setFeature(cpu, .el3, bitField(registers[<span class="tok-number">0</span>], <span class="tok-number">12</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L222"> setFeature(cpu, .ras, bitField(registers[<span class="tok-number">0</span>], <span class="tok-number">28</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L223"></span>
<span class="line" id="L224"> <span class="tok-kw">if</span> (bitField(registers[<span class="tok-number">0</span>], <span class="tok-number">20</span>) < <span class="tok-number">0xF</span>) blk: {</span>
<span class="line" id="L225"> <span class="tok-kw">if</span> (bitField(registers[<span class="tok-number">0</span>], <span class="tok-number">16</span>) != bitField(registers[<span class="tok-number">0</span>], <span class="tok-number">20</span>)) <span class="tok-kw">break</span> :blk; <span class="tok-comment">// This should never occur</span>
</span>
<span class="line" id="L226"></span>
<span class="line" id="L227"> setFeature(cpu, .neon, <span class="tok-null">true</span>);</span>
<span class="line" id="L228"> setFeature(cpu, .fp_armv8, <span class="tok-null">true</span>);</span>
<span class="line" id="L229"> setFeature(cpu, .fullfp16, bitField(registers[<span class="tok-number">0</span>], <span class="tok-number">20</span>) > <span class="tok-number">0</span>);</span>
<span class="line" id="L230"> }</span>
<span class="line" id="L231"></span>
<span class="line" id="L232"> <span class="tok-comment">// ID_AA64PFR1_EL1</span>
</span>
<span class="line" id="L233"> setFeature(cpu, .mpam, bitField(registers[<span class="tok-number">1</span>], <span class="tok-number">16</span>) > <span class="tok-number">0</span> <span class="tok-kw">and</span> bitField(registers[<span class="tok-number">0</span>], <span class="tok-number">40</span>) == <span class="tok-number">0</span>); <span class="tok-comment">// MPAM v0.1</span>
</span>
<span class="line" id="L234"> setFeature(cpu, .mte, bitField(registers[<span class="tok-number">1</span>], <span class="tok-number">8</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L235"> setFeature(cpu, .ssbs, bitField(registers[<span class="tok-number">1</span>], <span class="tok-number">4</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L236"> setFeature(cpu, .bti, bitField(registers[<span class="tok-number">1</span>], <span class="tok-number">0</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L237"></span>
<span class="line" id="L238"> <span class="tok-comment">// ID_AA64DFR0_EL1</span>
</span>
<span class="line" id="L239"> setFeature(cpu, .tracev8_4, bitField(registers[<span class="tok-number">2</span>], <span class="tok-number">40</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L240"> setFeature(cpu, .spe, bitField(registers[<span class="tok-number">2</span>], <span class="tok-number">32</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L241"> setFeature(cpu, .perfmon, bitField(registers[<span class="tok-number">2</span>], <span class="tok-number">8</span>) >= <span class="tok-number">1</span> <span class="tok-kw">and</span> bitField(registers[<span class="tok-number">2</span>], <span class="tok-number">8</span>) < <span class="tok-number">0xF</span>);</span>
<span class="line" id="L242"></span>
<span class="line" id="L243"> <span class="tok-comment">// ID_AA64DFR1_EL1 reserved</span>
</span>
<span class="line" id="L244"> <span class="tok-comment">// ID_AA64AFR0_EL1 reserved / implementation defined</span>
</span>
<span class="line" id="L245"> <span class="tok-comment">// ID_AA64AFR1_EL1 reserved</span>
</span>
<span class="line" id="L246"></span>
<span class="line" id="L247"> <span class="tok-comment">// ID_AA64ISAR0_EL1</span>
</span>
<span class="line" id="L248"> setFeature(cpu, .rand, bitField(registers[<span class="tok-number">6</span>], <span class="tok-number">60</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L249"> setFeature(cpu, .tlb_rmi, bitField(registers[<span class="tok-number">6</span>], <span class="tok-number">56</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L250"> setFeature(cpu, .flagm, bitField(registers[<span class="tok-number">6</span>], <span class="tok-number">52</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L251"> setFeature(cpu, .fp16fml, bitField(registers[<span class="tok-number">6</span>], <span class="tok-number">48</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L252"> setFeature(cpu, .dotprod, bitField(registers[<span class="tok-number">6</span>], <span class="tok-number">44</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L253"> setFeature(cpu, .sm4, bitField(registers[<span class="tok-number">6</span>], <span class="tok-number">40</span>) >= <span class="tok-number">1</span> <span class="tok-kw">and</span> bitField(registers[<span class="tok-number">6</span>], <span class="tok-number">36</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L254"> setFeature(cpu, .sha3, bitField(registers[<span class="tok-number">6</span>], <span class="tok-number">32</span>) >= <span class="tok-number">1</span> <span class="tok-kw">and</span> bitField(registers[<span class="tok-number">6</span>], <span class="tok-number">12</span>) >= <span class="tok-number">2</span>);</span>
<span class="line" id="L255"> setFeature(cpu, .rdm, bitField(registers[<span class="tok-number">6</span>], <span class="tok-number">28</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L256"> setFeature(cpu, .lse, bitField(registers[<span class="tok-number">6</span>], <span class="tok-number">20</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L257"> setFeature(cpu, .crc, bitField(registers[<span class="tok-number">6</span>], <span class="tok-number">16</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L258"> setFeature(cpu, .sha2, bitField(registers[<span class="tok-number">6</span>], <span class="tok-number">12</span>) >= <span class="tok-number">1</span> <span class="tok-kw">and</span> bitField(registers[<span class="tok-number">6</span>], <span class="tok-number">8</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L259"> setFeature(cpu, .aes, bitField(registers[<span class="tok-number">6</span>], <span class="tok-number">4</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L260"></span>
<span class="line" id="L261"> <span class="tok-comment">// ID_AA64ISAR1_EL1</span>
</span>
<span class="line" id="L262"> setFeature(cpu, .i8mm, bitField(registers[<span class="tok-number">7</span>], <span class="tok-number">52</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L263"> setFeature(cpu, .bf16, bitField(registers[<span class="tok-number">7</span>], <span class="tok-number">44</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L264"> setFeature(cpu, .predres, bitField(registers[<span class="tok-number">7</span>], <span class="tok-number">40</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L265"> setFeature(cpu, .sb, bitField(registers[<span class="tok-number">7</span>], <span class="tok-number">36</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L266"> setFeature(cpu, .fptoint, bitField(registers[<span class="tok-number">7</span>], <span class="tok-number">32</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L267"> setFeature(cpu, .rcpc, bitField(registers[<span class="tok-number">7</span>], <span class="tok-number">20</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L268"> setFeature(cpu, .rcpc_immo, bitField(registers[<span class="tok-number">7</span>], <span class="tok-number">20</span>) >= <span class="tok-number">2</span>);</span>
<span class="line" id="L269"> setFeature(cpu, .complxnum, bitField(registers[<span class="tok-number">7</span>], <span class="tok-number">16</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L270"> setFeature(cpu, .jsconv, bitField(registers[<span class="tok-number">7</span>], <span class="tok-number">12</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L271"> setFeature(cpu, .pauth, bitField(registers[<span class="tok-number">7</span>], <span class="tok-number">8</span>) >= <span class="tok-number">1</span> <span class="tok-kw">or</span> bitField(registers[<span class="tok-number">7</span>], <span class="tok-number">4</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L272"> setFeature(cpu, .ccpp, bitField(registers[<span class="tok-number">7</span>], <span class="tok-number">0</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L273"> setFeature(cpu, .ccdp, bitField(registers[<span class="tok-number">7</span>], <span class="tok-number">0</span>) >= <span class="tok-number">2</span>);</span>
<span class="line" id="L274"></span>
<span class="line" id="L275"> <span class="tok-comment">// ID_AA64MMFR0_EL1</span>
</span>
<span class="line" id="L276"> setFeature(cpu, .ecv, bitField(registers[<span class="tok-number">8</span>], <span class="tok-number">60</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L277"> setFeature(cpu, .fgt, bitField(registers[<span class="tok-number">8</span>], <span class="tok-number">56</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L278"></span>
<span class="line" id="L279"> <span class="tok-comment">// ID_AA64MMFR1_EL1</span>
</span>
<span class="line" id="L280"> setFeature(cpu, .pan, bitField(registers[<span class="tok-number">9</span>], <span class="tok-number">20</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L281"> setFeature(cpu, .pan_rwv, bitField(registers[<span class="tok-number">9</span>], <span class="tok-number">20</span>) >= <span class="tok-number">2</span>);</span>
<span class="line" id="L282"> setFeature(cpu, .lor, bitField(registers[<span class="tok-number">9</span>], <span class="tok-number">16</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L283"> setFeature(cpu, .vh, bitField(registers[<span class="tok-number">9</span>], <span class="tok-number">8</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L284"> setFeature(cpu, .contextidr_el2, bitField(registers[<span class="tok-number">9</span>], <span class="tok-number">8</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L285"></span>
<span class="line" id="L286"> <span class="tok-comment">// ID_AA64MMFR2_EL1</span>
</span>
<span class="line" id="L287"> setFeature(cpu, .nv, bitField(registers[<span class="tok-number">10</span>], <span class="tok-number">24</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L288"> setFeature(cpu, .ccidx, bitField(registers[<span class="tok-number">10</span>], <span class="tok-number">20</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L289"> setFeature(cpu, .uaops, bitField(registers[<span class="tok-number">10</span>], <span class="tok-number">4</span>) >= <span class="tok-number">1</span>);</span>
<span class="line" id="L290"> }</span>
<span class="line" id="L291"></span>
<span class="line" id="L292"> <span class="tok-kw">fn</span> <span class="tok-fn">addInstructionFusions</span>(cpu: *Target.Cpu, info: CoreInfo) <span class="tok-type">void</span> {</span>
<span class="line" id="L293"> <span class="tok-kw">switch</span> (info.implementer) {</span>
<span class="line" id="L294"> <span class="tok-number">0x41</span> => <span class="tok-kw">switch</span> (info.part) {</span>
<span class="line" id="L295"> <span class="tok-number">0xd4b</span>, <span class="tok-number">0xd4c</span> => {</span>
<span class="line" id="L296"> <span class="tok-comment">// According to A78C/X1C Core Software Optimization Guide, CPU fuses certain instructions.</span>
</span>
<span class="line" id="L297"> setFeature(cpu, .cmp_bcc_fusion, <span class="tok-null">true</span>);</span>
<span class="line" id="L298"> setFeature(cpu, .fuse_aes, <span class="tok-null">true</span>);</span>
<span class="line" id="L299"> },</span>
<span class="line" id="L300"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L301"> },</span>
<span class="line" id="L302"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L303"> }</span>
<span class="line" id="L304"> }</span>
<span class="line" id="L305">};</span>
<span class="line" id="L306"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/zig | repos/yazap/docs/src/std/zig/system/darwin.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> Allocator = mem.Allocator;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> Target = std.Target;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> Version = std.SemanticVersion;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> macos = <span class="tok-builtin">@import</span>(<span class="tok-str">"darwin/macos.zig"</span>);</span>
<span class="line" id="L8"></span>
<span class="line" id="L9"><span class="tok-comment">/// Check if SDK is installed on Darwin without triggering CLT installation popup window.</span></span>
<span class="line" id="L10"><span class="tok-comment">/// Note: simply invoking `xcrun` will inevitably trigger the CLT installation popup.</span></span>
<span class="line" id="L11"><span class="tok-comment">/// Therefore, we resort to the same tool used by Homebrew, namely, invoking `xcode-select --print-path`</span></span>
<span class="line" id="L12"><span class="tok-comment">/// and checking if the status is nonzero or the returned string in nonempty.</span></span>
<span class="line" id="L13"><span class="tok-comment">/// https://github.com/Homebrew/brew/blob/e119bdc571dcb000305411bc1e26678b132afb98/Library/Homebrew/brew.sh#L630</span></span>
<span class="line" id="L14"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isDarwinSDKInstalled</span>(allocator: Allocator) <span class="tok-type">bool</span> {</span>
<span class="line" id="L15"> <span class="tok-kw">const</span> argv = &[_][]<span class="tok-kw">const</span> <span class="tok-type">u8</span>{ <span class="tok-str">"/usr/bin/xcode-select"</span>, <span class="tok-str">"--print-path"</span> };</span>
<span class="line" id="L16"> <span class="tok-kw">const</span> result = std.ChildProcess.exec(.{ .allocator = allocator, .argv = argv }) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L17"> <span class="tok-kw">defer</span> {</span>
<span class="line" id="L18"> allocator.free(result.stderr);</span>
<span class="line" id="L19"> allocator.free(result.stdout);</span>
<span class="line" id="L20"> }</span>
<span class="line" id="L21"> <span class="tok-kw">if</span> (result.stderr.len != <span class="tok-number">0</span> <span class="tok-kw">or</span> result.term.Exited != <span class="tok-number">0</span>) {</span>
<span class="line" id="L22"> <span class="tok-comment">// We don't actually care if there were errors as this is best-effort check anyhow.</span>
</span>
<span class="line" id="L23"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L24"> }</span>
<span class="line" id="L25"> <span class="tok-kw">return</span> result.stdout.len > <span class="tok-number">0</span>;</span>
<span class="line" id="L26">}</span>
<span class="line" id="L27"></span>
<span class="line" id="L28"><span class="tok-comment">/// Detect SDK on Darwin.</span></span>
<span class="line" id="L29"><span class="tok-comment">/// Calls `xcrun --sdk <target_sdk> --show-sdk-path` which fetches the path to the SDK sysroot (if any).</span></span>
<span class="line" id="L30"><span class="tok-comment">/// Subsequently calls `xcrun --sdk <target_sdk> --show-sdk-version` which fetches version of the SDK.</span></span>
<span class="line" id="L31"><span class="tok-comment">/// The caller needs to deinit the resulting struct.</span></span>
<span class="line" id="L32"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getDarwinSDK</span>(allocator: Allocator, target: Target) ?DarwinSDK {</span>
<span class="line" id="L33"> <span class="tok-kw">const</span> is_simulator_abi = target.abi == .simulator;</span>
<span class="line" id="L34"> <span class="tok-kw">const</span> sdk = <span class="tok-kw">switch</span> (target.os.tag) {</span>
<span class="line" id="L35"> .macos => <span class="tok-str">"macosx"</span>,</span>
<span class="line" id="L36"> .ios => <span class="tok-kw">if</span> (is_simulator_abi) <span class="tok-str">"iphonesimulator"</span> <span class="tok-kw">else</span> <span class="tok-str">"iphoneos"</span>,</span>
<span class="line" id="L37"> .watchos => <span class="tok-kw">if</span> (is_simulator_abi) <span class="tok-str">"watchsimulator"</span> <span class="tok-kw">else</span> <span class="tok-str">"watchos"</span>,</span>
<span class="line" id="L38"> .tvos => <span class="tok-kw">if</span> (is_simulator_abi) <span class="tok-str">"appletvsimulator"</span> <span class="tok-kw">else</span> <span class="tok-str">"appletvos"</span>,</span>
<span class="line" id="L39"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-null">null</span>,</span>
<span class="line" id="L40"> };</span>
<span class="line" id="L41"> <span class="tok-kw">const</span> path = path: {</span>
<span class="line" id="L42"> <span class="tok-kw">const</span> argv = &[_][]<span class="tok-kw">const</span> <span class="tok-type">u8</span>{ <span class="tok-str">"/usr/bin/xcrun"</span>, <span class="tok-str">"--sdk"</span>, sdk, <span class="tok-str">"--show-sdk-path"</span> };</span>
<span class="line" id="L43"> <span class="tok-kw">const</span> result = std.ChildProcess.exec(.{ .allocator = allocator, .argv = argv }) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L44"> <span class="tok-kw">defer</span> {</span>
<span class="line" id="L45"> allocator.free(result.stderr);</span>
<span class="line" id="L46"> allocator.free(result.stdout);</span>
<span class="line" id="L47"> }</span>
<span class="line" id="L48"> <span class="tok-kw">if</span> (result.stderr.len != <span class="tok-number">0</span> <span class="tok-kw">or</span> result.term.Exited != <span class="tok-number">0</span>) {</span>
<span class="line" id="L49"> <span class="tok-comment">// We don't actually care if there were errors as this is best-effort check anyhow</span>
</span>
<span class="line" id="L50"> <span class="tok-comment">// and in the worst case the user can specify the sysroot manually.</span>
</span>
<span class="line" id="L51"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L52"> }</span>
<span class="line" id="L53"> <span class="tok-kw">const</span> path = allocator.dupe(<span class="tok-type">u8</span>, mem.trimRight(<span class="tok-type">u8</span>, result.stdout, <span class="tok-str">"\r\n"</span>)) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L54"> <span class="tok-kw">break</span> :path path;</span>
<span class="line" id="L55"> };</span>
<span class="line" id="L56"> <span class="tok-kw">const</span> version = version: {</span>
<span class="line" id="L57"> <span class="tok-kw">const</span> argv = &[_][]<span class="tok-kw">const</span> <span class="tok-type">u8</span>{ <span class="tok-str">"/usr/bin/xcrun"</span>, <span class="tok-str">"--sdk"</span>, sdk, <span class="tok-str">"--show-sdk-version"</span> };</span>
<span class="line" id="L58"> <span class="tok-kw">const</span> result = std.ChildProcess.exec(.{ .allocator = allocator, .argv = argv }) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L59"> <span class="tok-kw">defer</span> {</span>
<span class="line" id="L60"> allocator.free(result.stderr);</span>
<span class="line" id="L61"> allocator.free(result.stdout);</span>
<span class="line" id="L62"> }</span>
<span class="line" id="L63"> <span class="tok-kw">if</span> (result.stderr.len != <span class="tok-number">0</span> <span class="tok-kw">or</span> result.term.Exited != <span class="tok-number">0</span>) {</span>
<span class="line" id="L64"> <span class="tok-comment">// We don't actually care if there were errors as this is best-effort check anyhow</span>
</span>
<span class="line" id="L65"> <span class="tok-comment">// and in the worst case the user can specify the sysroot manually.</span>
</span>
<span class="line" id="L66"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L67"> }</span>
<span class="line" id="L68"> <span class="tok-kw">const</span> raw_version = mem.trimRight(<span class="tok-type">u8</span>, result.stdout, <span class="tok-str">"\r\n"</span>);</span>
<span class="line" id="L69"> <span class="tok-kw">const</span> version = Version.parse(raw_version) <span class="tok-kw">catch</span> Version{</span>
<span class="line" id="L70"> .major = <span class="tok-number">0</span>,</span>
<span class="line" id="L71"> .minor = <span class="tok-number">0</span>,</span>
<span class="line" id="L72"> .patch = <span class="tok-number">0</span>,</span>
<span class="line" id="L73"> };</span>
<span class="line" id="L74"> <span class="tok-kw">break</span> :version version;</span>
<span class="line" id="L75"> };</span>
<span class="line" id="L76"> <span class="tok-kw">return</span> DarwinSDK{</span>
<span class="line" id="L77"> .path = path,</span>
<span class="line" id="L78"> .version = version,</span>
<span class="line" id="L79"> };</span>
<span class="line" id="L80">}</span>
<span class="line" id="L81"></span>
<span class="line" id="L82"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> DarwinSDK = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L83"> path: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L84"> version: Version,</span>
<span class="line" id="L85"></span>
<span class="line" id="L86"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: DarwinSDK, allocator: Allocator) <span class="tok-type">void</span> {</span>
<span class="line" id="L87"> allocator.free(self.path);</span>
<span class="line" id="L88"> }</span>
<span class="line" id="L89">};</span>
<span class="line" id="L90"></span>
<span class="line" id="L91"><span class="tok-kw">test</span> {</span>
<span class="line" id="L92"> _ = macos;</span>
<span class="line" id="L93">}</span>
<span class="line" id="L94"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/zig | repos/yazap/docs/src/std/zig/system/linux.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> io = std.io;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> fs = std.fs;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> fmt = std.fmt;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L8"></span>
<span class="line" id="L9"><span class="tok-kw">const</span> Target = std.Target;</span>
<span class="line" id="L10"><span class="tok-kw">const</span> CrossTarget = std.zig.CrossTarget;</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L13"></span>
<span class="line" id="L14"><span class="tok-kw">const</span> SparcCpuinfoImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L15"> model: ?*<span class="tok-kw">const</span> Target.Cpu.Model = <span class="tok-null">null</span>,</span>
<span class="line" id="L16"> is_64bit: <span class="tok-type">bool</span> = <span class="tok-null">false</span>,</span>
<span class="line" id="L17"></span>
<span class="line" id="L18"> <span class="tok-kw">const</span> cpu_names = .{</span>
<span class="line" id="L19"> .{ <span class="tok-str">"SuperSparc"</span>, &Target.sparc.cpu.supersparc },</span>
<span class="line" id="L20"> .{ <span class="tok-str">"HyperSparc"</span>, &Target.sparc.cpu.hypersparc },</span>
<span class="line" id="L21"> .{ <span class="tok-str">"SpitFire"</span>, &Target.sparc.cpu.ultrasparc },</span>
<span class="line" id="L22"> .{ <span class="tok-str">"BlackBird"</span>, &Target.sparc.cpu.ultrasparc },</span>
<span class="line" id="L23"> .{ <span class="tok-str">"Sabre"</span>, &Target.sparc.cpu.ultrasparc },</span>
<span class="line" id="L24"> .{ <span class="tok-str">"Hummingbird"</span>, &Target.sparc.cpu.ultrasparc },</span>
<span class="line" id="L25"> .{ <span class="tok-str">"Cheetah"</span>, &Target.sparc.cpu.ultrasparc3 },</span>
<span class="line" id="L26"> .{ <span class="tok-str">"Jalapeno"</span>, &Target.sparc.cpu.ultrasparc3 },</span>
<span class="line" id="L27"> .{ <span class="tok-str">"Jaguar"</span>, &Target.sparc.cpu.ultrasparc3 },</span>
<span class="line" id="L28"> .{ <span class="tok-str">"Panther"</span>, &Target.sparc.cpu.ultrasparc3 },</span>
<span class="line" id="L29"> .{ <span class="tok-str">"Serrano"</span>, &Target.sparc.cpu.ultrasparc3 },</span>
<span class="line" id="L30"> .{ <span class="tok-str">"UltraSparc T1"</span>, &Target.sparc.cpu.niagara },</span>
<span class="line" id="L31"> .{ <span class="tok-str">"UltraSparc T2"</span>, &Target.sparc.cpu.niagara2 },</span>
<span class="line" id="L32"> .{ <span class="tok-str">"UltraSparc T3"</span>, &Target.sparc.cpu.niagara3 },</span>
<span class="line" id="L33"> .{ <span class="tok-str">"UltraSparc T4"</span>, &Target.sparc.cpu.niagara4 },</span>
<span class="line" id="L34"> .{ <span class="tok-str">"UltraSparc T5"</span>, &Target.sparc.cpu.niagara4 },</span>
<span class="line" id="L35"> .{ <span class="tok-str">"LEON"</span>, &Target.sparc.cpu.leon3 },</span>
<span class="line" id="L36"> };</span>
<span class="line" id="L37"></span>
<span class="line" id="L38"> <span class="tok-kw">fn</span> <span class="tok-fn">line_hook</span>(self: *SparcCpuinfoImpl, key: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, value: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">bool</span> {</span>
<span class="line" id="L39"> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, key, <span class="tok-str">"cpu"</span>)) {</span>
<span class="line" id="L40"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (cpu_names) |pair| {</span>
<span class="line" id="L41"> <span class="tok-kw">if</span> (mem.indexOfPos(<span class="tok-type">u8</span>, value, <span class="tok-number">0</span>, pair[<span class="tok-number">0</span>]) != <span class="tok-null">null</span>) {</span>
<span class="line" id="L42"> self.model = pair[<span class="tok-number">1</span>];</span>
<span class="line" id="L43"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L44"> }</span>
<span class="line" id="L45"> }</span>
<span class="line" id="L46"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, key, <span class="tok-str">"type"</span>)) {</span>
<span class="line" id="L47"> self.is_64bit = mem.eql(<span class="tok-type">u8</span>, value, <span class="tok-str">"sun4u"</span>) <span class="tok-kw">or</span> mem.eql(<span class="tok-type">u8</span>, value, <span class="tok-str">"sun4v"</span>);</span>
<span class="line" id="L48"> }</span>
<span class="line" id="L49"></span>
<span class="line" id="L50"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L51"> }</span>
<span class="line" id="L52"></span>
<span class="line" id="L53"> <span class="tok-kw">fn</span> <span class="tok-fn">finalize</span>(self: *<span class="tok-kw">const</span> SparcCpuinfoImpl, arch: Target.Cpu.Arch) ?Target.Cpu {</span>
<span class="line" id="L54"> <span class="tok-comment">// At the moment we only support 64bit SPARC systems.</span>
</span>
<span class="line" id="L55"> assert(self.is_64bit);</span>
<span class="line" id="L56"></span>
<span class="line" id="L57"> <span class="tok-kw">const</span> model = self.model <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L58"> <span class="tok-kw">return</span> Target.Cpu{</span>
<span class="line" id="L59"> .arch = arch,</span>
<span class="line" id="L60"> .model = model,</span>
<span class="line" id="L61"> .features = model.features,</span>
<span class="line" id="L62"> };</span>
<span class="line" id="L63"> }</span>
<span class="line" id="L64">};</span>
<span class="line" id="L65"></span>
<span class="line" id="L66"><span class="tok-kw">const</span> SparcCpuinfoParser = CpuinfoParser(SparcCpuinfoImpl);</span>
<span class="line" id="L67"></span>
<span class="line" id="L68"><span class="tok-kw">test</span> <span class="tok-str">"cpuinfo: SPARC"</span> {</span>
<span class="line" id="L69"> <span class="tok-kw">try</span> testParser(SparcCpuinfoParser, .sparc64, &Target.sparc.cpu.niagara2,</span>
<span class="line" id="L70"> <span class="tok-str">\\cpu : UltraSparc T2 (Niagara2)</span></span>
<span class="line" id="L71"> <span class="tok-str">\\fpu : UltraSparc T2 integrated FPU</span></span>
<span class="line" id="L72"> <span class="tok-str">\\pmu : niagara2</span></span>
<span class="line" id="L73"> <span class="tok-str">\\type : sun4v</span></span>
<span class="line" id="L74"> );</span>
<span class="line" id="L75">}</span>
<span class="line" id="L76"></span>
<span class="line" id="L77"><span class="tok-kw">const</span> PowerpcCpuinfoImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L78"> model: ?*<span class="tok-kw">const</span> Target.Cpu.Model = <span class="tok-null">null</span>,</span>
<span class="line" id="L79"></span>
<span class="line" id="L80"> <span class="tok-kw">const</span> cpu_names = .{</span>
<span class="line" id="L81"> .{ <span class="tok-str">"604e"</span>, &Target.powerpc.cpu.@"604e" },</span>
<span class="line" id="L82"> .{ <span class="tok-str">"604"</span>, &Target.powerpc.cpu.@"604" },</span>
<span class="line" id="L83"> .{ <span class="tok-str">"7400"</span>, &Target.powerpc.cpu.@"7400" },</span>
<span class="line" id="L84"> .{ <span class="tok-str">"7410"</span>, &Target.powerpc.cpu.@"7400" },</span>
<span class="line" id="L85"> .{ <span class="tok-str">"7447"</span>, &Target.powerpc.cpu.@"7400" },</span>
<span class="line" id="L86"> .{ <span class="tok-str">"7455"</span>, &Target.powerpc.cpu.@"7450" },</span>
<span class="line" id="L87"> .{ <span class="tok-str">"G4"</span>, &Target.powerpc.cpu.g4 },</span>
<span class="line" id="L88"> .{ <span class="tok-str">"POWER4"</span>, &Target.powerpc.cpu.@"970" },</span>
<span class="line" id="L89"> .{ <span class="tok-str">"PPC970FX"</span>, &Target.powerpc.cpu.@"970" },</span>
<span class="line" id="L90"> .{ <span class="tok-str">"PPC970MP"</span>, &Target.powerpc.cpu.@"970" },</span>
<span class="line" id="L91"> .{ <span class="tok-str">"G5"</span>, &Target.powerpc.cpu.g5 },</span>
<span class="line" id="L92"> .{ <span class="tok-str">"POWER5"</span>, &Target.powerpc.cpu.g5 },</span>
<span class="line" id="L93"> .{ <span class="tok-str">"A2"</span>, &Target.powerpc.cpu.a2 },</span>
<span class="line" id="L94"> .{ <span class="tok-str">"POWER6"</span>, &Target.powerpc.cpu.pwr6 },</span>
<span class="line" id="L95"> .{ <span class="tok-str">"POWER7"</span>, &Target.powerpc.cpu.pwr7 },</span>
<span class="line" id="L96"> .{ <span class="tok-str">"POWER8"</span>, &Target.powerpc.cpu.pwr8 },</span>
<span class="line" id="L97"> .{ <span class="tok-str">"POWER8E"</span>, &Target.powerpc.cpu.pwr8 },</span>
<span class="line" id="L98"> .{ <span class="tok-str">"POWER8NVL"</span>, &Target.powerpc.cpu.pwr8 },</span>
<span class="line" id="L99"> .{ <span class="tok-str">"POWER9"</span>, &Target.powerpc.cpu.pwr9 },</span>
<span class="line" id="L100"> .{ <span class="tok-str">"POWER10"</span>, &Target.powerpc.cpu.pwr10 },</span>
<span class="line" id="L101"> };</span>
<span class="line" id="L102"></span>
<span class="line" id="L103"> <span class="tok-kw">fn</span> <span class="tok-fn">line_hook</span>(self: *PowerpcCpuinfoImpl, key: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, value: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">bool</span> {</span>
<span class="line" id="L104"> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, key, <span class="tok-str">"cpu"</span>)) {</span>
<span class="line" id="L105"> <span class="tok-comment">// The model name is often followed by a comma or space and extra</span>
</span>
<span class="line" id="L106"> <span class="tok-comment">// info.</span>
</span>
<span class="line" id="L107"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (cpu_names) |pair| {</span>
<span class="line" id="L108"> <span class="tok-kw">const</span> end_index = mem.indexOfAny(<span class="tok-type">u8</span>, value, <span class="tok-str">", "</span>) <span class="tok-kw">orelse</span> value.len;</span>
<span class="line" id="L109"> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, value[<span class="tok-number">0</span>..end_index], pair[<span class="tok-number">0</span>])) {</span>
<span class="line" id="L110"> self.model = pair[<span class="tok-number">1</span>];</span>
<span class="line" id="L111"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L112"> }</span>
<span class="line" id="L113"> }</span>
<span class="line" id="L114"></span>
<span class="line" id="L115"> <span class="tok-comment">// Stop the detection once we've seen the first core.</span>
</span>
<span class="line" id="L116"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L117"> }</span>
<span class="line" id="L118"></span>
<span class="line" id="L119"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L120"> }</span>
<span class="line" id="L121"></span>
<span class="line" id="L122"> <span class="tok-kw">fn</span> <span class="tok-fn">finalize</span>(self: *<span class="tok-kw">const</span> PowerpcCpuinfoImpl, arch: Target.Cpu.Arch) ?Target.Cpu {</span>
<span class="line" id="L123"> <span class="tok-kw">const</span> model = self.model <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L124"> <span class="tok-kw">return</span> Target.Cpu{</span>
<span class="line" id="L125"> .arch = arch,</span>
<span class="line" id="L126"> .model = model,</span>
<span class="line" id="L127"> .features = model.features,</span>
<span class="line" id="L128"> };</span>
<span class="line" id="L129"> }</span>
<span class="line" id="L130">};</span>
<span class="line" id="L131"></span>
<span class="line" id="L132"><span class="tok-kw">const</span> PowerpcCpuinfoParser = CpuinfoParser(PowerpcCpuinfoImpl);</span>
<span class="line" id="L133"></span>
<span class="line" id="L134"><span class="tok-kw">test</span> <span class="tok-str">"cpuinfo: PowerPC"</span> {</span>
<span class="line" id="L135"> <span class="tok-kw">try</span> testParser(PowerpcCpuinfoParser, .powerpc, &Target.powerpc.cpu.@"970",</span>
<span class="line" id="L136"> <span class="tok-str">\\processor : 0</span></span>
<span class="line" id="L137"> <span class="tok-str">\\cpu : PPC970MP, altivec supported</span></span>
<span class="line" id="L138"> <span class="tok-str">\\clock : 1250.000000MHz</span></span>
<span class="line" id="L139"> <span class="tok-str">\\revision : 1.1 (pvr 0044 0101)</span></span>
<span class="line" id="L140"> );</span>
<span class="line" id="L141"> <span class="tok-kw">try</span> testParser(PowerpcCpuinfoParser, .powerpc64le, &Target.powerpc.cpu.pwr8,</span>
<span class="line" id="L142"> <span class="tok-str">\\processor : 0</span></span>
<span class="line" id="L143"> <span class="tok-str">\\cpu : POWER8 (raw), altivec supported</span></span>
<span class="line" id="L144"> <span class="tok-str">\\clock : 2926.000000MHz</span></span>
<span class="line" id="L145"> <span class="tok-str">\\revision : 2.0 (pvr 004d 0200)</span></span>
<span class="line" id="L146"> );</span>
<span class="line" id="L147">}</span>
<span class="line" id="L148"></span>
<span class="line" id="L149"><span class="tok-kw">const</span> ArmCpuinfoImpl = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L150"> <span class="tok-kw">const</span> num_cores = <span class="tok-number">4</span>;</span>
<span class="line" id="L151"></span>
<span class="line" id="L152"> cores: [num_cores]CoreInfo = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L153"> core_no: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L154"> have_fields: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L155"></span>
<span class="line" id="L156"> <span class="tok-kw">const</span> CoreInfo = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L157"> architecture: <span class="tok-type">u8</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L158"> implementer: <span class="tok-type">u8</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L159"> variant: <span class="tok-type">u8</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L160"> part: <span class="tok-type">u16</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L161"> is_really_v6: <span class="tok-type">bool</span> = <span class="tok-null">false</span>,</span>
<span class="line" id="L162"> };</span>
<span class="line" id="L163"></span>
<span class="line" id="L164"> <span class="tok-kw">const</span> cpu_models = <span class="tok-builtin">@import</span>(<span class="tok-str">"arm.zig"</span>).cpu_models;</span>
<span class="line" id="L165"></span>
<span class="line" id="L166"> <span class="tok-kw">fn</span> <span class="tok-fn">addOne</span>(self: *ArmCpuinfoImpl) <span class="tok-type">void</span> {</span>
<span class="line" id="L167"> <span class="tok-kw">if</span> (self.have_fields == <span class="tok-number">4</span> <span class="tok-kw">and</span> self.core_no < num_cores) {</span>
<span class="line" id="L168"> <span class="tok-kw">if</span> (self.core_no > <span class="tok-number">0</span>) {</span>
<span class="line" id="L169"> <span class="tok-comment">// Deduplicate the core info.</span>
</span>
<span class="line" id="L170"> <span class="tok-kw">for</span> (self.cores[<span class="tok-number">0</span>..self.core_no]) |it| {</span>
<span class="line" id="L171"> <span class="tok-kw">if</span> (std.meta.eql(it, self.cores[self.core_no]))</span>
<span class="line" id="L172"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L173"> }</span>
<span class="line" id="L174"> }</span>
<span class="line" id="L175"> self.core_no += <span class="tok-number">1</span>;</span>
<span class="line" id="L176"> }</span>
<span class="line" id="L177"> }</span>
<span class="line" id="L178"></span>
<span class="line" id="L179"> <span class="tok-kw">fn</span> <span class="tok-fn">line_hook</span>(self: *ArmCpuinfoImpl, key: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, value: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">bool</span> {</span>
<span class="line" id="L180"> <span class="tok-kw">const</span> info = &self.cores[self.core_no];</span>
<span class="line" id="L181"></span>
<span class="line" id="L182"> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, key, <span class="tok-str">"processor"</span>)) {</span>
<span class="line" id="L183"> <span class="tok-comment">// Handle both old-style and new-style cpuinfo formats.</span>
</span>
<span class="line" id="L184"> <span class="tok-comment">// The former prints a sequence of "processor: N" lines for each</span>
</span>
<span class="line" id="L185"> <span class="tok-comment">// core and then the info for the core that's executing this code(!)</span>
</span>
<span class="line" id="L186"> <span class="tok-comment">// while the latter prints the infos for each core right after the</span>
</span>
<span class="line" id="L187"> <span class="tok-comment">// "processor" key.</span>
</span>
<span class="line" id="L188"> self.have_fields = <span class="tok-number">0</span>;</span>
<span class="line" id="L189"> self.cores[self.core_no] = .{};</span>
<span class="line" id="L190"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, key, <span class="tok-str">"CPU implementer"</span>)) {</span>
<span class="line" id="L191"> info.implementer = <span class="tok-kw">try</span> fmt.parseInt(<span class="tok-type">u8</span>, value, <span class="tok-number">0</span>);</span>
<span class="line" id="L192"> self.have_fields += <span class="tok-number">1</span>;</span>
<span class="line" id="L193"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, key, <span class="tok-str">"CPU architecture"</span>)) {</span>
<span class="line" id="L194"> <span class="tok-comment">// "AArch64" on older kernels.</span>
</span>
<span class="line" id="L195"> info.architecture = <span class="tok-kw">if</span> (mem.startsWith(<span class="tok-type">u8</span>, value, <span class="tok-str">"AArch64"</span>))</span>
<span class="line" id="L196"> <span class="tok-number">8</span></span>
<span class="line" id="L197"> <span class="tok-kw">else</span></span>
<span class="line" id="L198"> <span class="tok-kw">try</span> fmt.parseInt(<span class="tok-type">u8</span>, value, <span class="tok-number">0</span>);</span>
<span class="line" id="L199"> self.have_fields += <span class="tok-number">1</span>;</span>
<span class="line" id="L200"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, key, <span class="tok-str">"CPU variant"</span>)) {</span>
<span class="line" id="L201"> info.variant = <span class="tok-kw">try</span> fmt.parseInt(<span class="tok-type">u8</span>, value, <span class="tok-number">0</span>);</span>
<span class="line" id="L202"> self.have_fields += <span class="tok-number">1</span>;</span>
<span class="line" id="L203"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, key, <span class="tok-str">"CPU part"</span>)) {</span>
<span class="line" id="L204"> info.part = <span class="tok-kw">try</span> fmt.parseInt(<span class="tok-type">u16</span>, value, <span class="tok-number">0</span>);</span>
<span class="line" id="L205"> self.have_fields += <span class="tok-number">1</span>;</span>
<span class="line" id="L206"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, key, <span class="tok-str">"model name"</span>)) {</span>
<span class="line" id="L207"> <span class="tok-comment">// ARMv6 cores report "CPU architecture" equal to 7.</span>
</span>
<span class="line" id="L208"> <span class="tok-kw">if</span> (mem.indexOf(<span class="tok-type">u8</span>, value, <span class="tok-str">"(v6l)"</span>)) |_| {</span>
<span class="line" id="L209"> info.is_really_v6 = <span class="tok-null">true</span>;</span>
<span class="line" id="L210"> }</span>
<span class="line" id="L211"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, key, <span class="tok-str">"CPU revision"</span>)) {</span>
<span class="line" id="L212"> <span class="tok-comment">// This field is always the last one for each CPU section.</span>
</span>
<span class="line" id="L213"> _ = self.addOne();</span>
<span class="line" id="L214"> }</span>
<span class="line" id="L215"></span>
<span class="line" id="L216"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L217"> }</span>
<span class="line" id="L218"></span>
<span class="line" id="L219"> <span class="tok-kw">fn</span> <span class="tok-fn">finalize</span>(self: *ArmCpuinfoImpl, arch: Target.Cpu.Arch) ?Target.Cpu {</span>
<span class="line" id="L220"> <span class="tok-kw">if</span> (self.core_no == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L221"></span>
<span class="line" id="L222"> <span class="tok-kw">const</span> is_64bit = <span class="tok-kw">switch</span> (arch) {</span>
<span class="line" id="L223"> .aarch64, .aarch64_be, .aarch64_32 => <span class="tok-null">true</span>,</span>
<span class="line" id="L224"> <span class="tok-kw">else</span> => <span class="tok-null">false</span>,</span>
<span class="line" id="L225"> };</span>
<span class="line" id="L226"></span>
<span class="line" id="L227"> <span class="tok-kw">var</span> known_models: [num_cores]?*<span class="tok-kw">const</span> Target.Cpu.Model = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L228"> <span class="tok-kw">for</span> (self.cores[<span class="tok-number">0</span>..self.core_no], <span class="tok-number">0</span>..) |core, i| {</span>
<span class="line" id="L229"> known_models[i] = cpu_models.isKnown(.{</span>
<span class="line" id="L230"> .architecture = core.architecture,</span>
<span class="line" id="L231"> .implementer = core.implementer,</span>
<span class="line" id="L232"> .variant = core.variant,</span>
<span class="line" id="L233"> .part = core.part,</span>
<span class="line" id="L234"> }, is_64bit);</span>
<span class="line" id="L235"> }</span>
<span class="line" id="L236"></span>
<span class="line" id="L237"> <span class="tok-comment">// XXX We pick the first core on big.LITTLE systems, hopefully the</span>
</span>
<span class="line" id="L238"> <span class="tok-comment">// LITTLE one.</span>
</span>
<span class="line" id="L239"> <span class="tok-kw">const</span> model = known_models[<span class="tok-number">0</span>] <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L240"> <span class="tok-kw">return</span> Target.Cpu{</span>
<span class="line" id="L241"> .arch = arch,</span>
<span class="line" id="L242"> .model = model,</span>
<span class="line" id="L243"> .features = model.features,</span>
<span class="line" id="L244"> };</span>
<span class="line" id="L245"> }</span>
<span class="line" id="L246">};</span>
<span class="line" id="L247"></span>
<span class="line" id="L248"><span class="tok-kw">const</span> ArmCpuinfoParser = CpuinfoParser(ArmCpuinfoImpl);</span>
<span class="line" id="L249"></span>
<span class="line" id="L250"><span class="tok-kw">test</span> <span class="tok-str">"cpuinfo: ARM"</span> {</span>
<span class="line" id="L251"> <span class="tok-kw">try</span> testParser(ArmCpuinfoParser, .arm, &Target.arm.cpu.arm1176jz_s,</span>
<span class="line" id="L252"> <span class="tok-str">\\processor : 0</span></span>
<span class="line" id="L253"> <span class="tok-str">\\model name : ARMv6-compatible processor rev 7 (v6l)</span></span>
<span class="line" id="L254"> <span class="tok-str">\\BogoMIPS : 997.08</span></span>
<span class="line" id="L255"> <span class="tok-str">\\Features : half thumb fastmult vfp edsp java tls</span></span>
<span class="line" id="L256"> <span class="tok-str">\\CPU implementer : 0x41</span></span>
<span class="line" id="L257"> <span class="tok-str">\\CPU architecture: 7</span></span>
<span class="line" id="L258"> <span class="tok-str">\\CPU variant : 0x0</span></span>
<span class="line" id="L259"> <span class="tok-str">\\CPU part : 0xb76</span></span>
<span class="line" id="L260"> <span class="tok-str">\\CPU revision : 7</span></span>
<span class="line" id="L261"> );</span>
<span class="line" id="L262"> <span class="tok-kw">try</span> testParser(ArmCpuinfoParser, .arm, &Target.arm.cpu.cortex_a7,</span>
<span class="line" id="L263"> <span class="tok-str">\\processor : 0</span></span>
<span class="line" id="L264"> <span class="tok-str">\\model name : ARMv7 Processor rev 3 (v7l)</span></span>
<span class="line" id="L265"> <span class="tok-str">\\BogoMIPS : 18.00</span></span>
<span class="line" id="L266"> <span class="tok-str">\\Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae</span></span>
<span class="line" id="L267"> <span class="tok-str">\\CPU implementer : 0x41</span></span>
<span class="line" id="L268"> <span class="tok-str">\\CPU architecture: 7</span></span>
<span class="line" id="L269"> <span class="tok-str">\\CPU variant : 0x0</span></span>
<span class="line" id="L270"> <span class="tok-str">\\CPU part : 0xc07</span></span>
<span class="line" id="L271"> <span class="tok-str">\\CPU revision : 3</span></span>
<span class="line" id="L272"> <span class="tok-str">\\</span></span>
<span class="line" id="L273"> <span class="tok-str">\\processor : 4</span></span>
<span class="line" id="L274"> <span class="tok-str">\\model name : ARMv7 Processor rev 3 (v7l)</span></span>
<span class="line" id="L275"> <span class="tok-str">\\BogoMIPS : 90.00</span></span>
<span class="line" id="L276"> <span class="tok-str">\\Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae</span></span>
<span class="line" id="L277"> <span class="tok-str">\\CPU implementer : 0x41</span></span>
<span class="line" id="L278"> <span class="tok-str">\\CPU architecture: 7</span></span>
<span class="line" id="L279"> <span class="tok-str">\\CPU variant : 0x2</span></span>
<span class="line" id="L280"> <span class="tok-str">\\CPU part : 0xc0f</span></span>
<span class="line" id="L281"> <span class="tok-str">\\CPU revision : 3</span></span>
<span class="line" id="L282"> );</span>
<span class="line" id="L283"> <span class="tok-kw">try</span> testParser(ArmCpuinfoParser, .aarch64, &Target.aarch64.cpu.cortex_a72,</span>
<span class="line" id="L284"> <span class="tok-str">\\processor : 0</span></span>
<span class="line" id="L285"> <span class="tok-str">\\BogoMIPS : 108.00</span></span>
<span class="line" id="L286"> <span class="tok-str">\\Features : fp asimd evtstrm crc32 cpuid</span></span>
<span class="line" id="L287"> <span class="tok-str">\\CPU implementer : 0x41</span></span>
<span class="line" id="L288"> <span class="tok-str">\\CPU architecture: 8</span></span>
<span class="line" id="L289"> <span class="tok-str">\\CPU variant : 0x0</span></span>
<span class="line" id="L290"> <span class="tok-str">\\CPU part : 0xd08</span></span>
<span class="line" id="L291"> <span class="tok-str">\\CPU revision : 3</span></span>
<span class="line" id="L292"> );</span>
<span class="line" id="L293">}</span>
<span class="line" id="L294"></span>
<span class="line" id="L295"><span class="tok-kw">fn</span> <span class="tok-fn">testParser</span>(</span>
<span class="line" id="L296"> parser: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L297"> arch: Target.Cpu.Arch,</span>
<span class="line" id="L298"> expected_model: *<span class="tok-kw">const</span> Target.Cpu.Model,</span>
<span class="line" id="L299"> input: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L300">) !<span class="tok-type">void</span> {</span>
<span class="line" id="L301"> <span class="tok-kw">var</span> fbs = io.fixedBufferStream(input);</span>
<span class="line" id="L302"> <span class="tok-kw">const</span> result = <span class="tok-kw">try</span> parser.parse(arch, fbs.reader());</span>
<span class="line" id="L303"> <span class="tok-kw">try</span> testing.expectEqual(expected_model, result.?.model);</span>
<span class="line" id="L304"> <span class="tok-kw">try</span> testing.expect(expected_model.features.eql(result.?.features));</span>
<span class="line" id="L305">}</span>
<span class="line" id="L306"></span>
<span class="line" id="L307"><span class="tok-comment">// The generic implementation of a /proc/cpuinfo parser.</span>
</span>
<span class="line" id="L308"><span class="tok-comment">// For every line it invokes the line_hook method with the key and value strings</span>
</span>
<span class="line" id="L309"><span class="tok-comment">// as first and second parameters. Returning false from the hook function stops</span>
</span>
<span class="line" id="L310"><span class="tok-comment">// the iteration without raising an error.</span>
</span>
<span class="line" id="L311"><span class="tok-comment">// When all the lines have been analyzed the finalize method is called.</span>
</span>
<span class="line" id="L312"><span class="tok-kw">fn</span> <span class="tok-fn">CpuinfoParser</span>(<span class="tok-kw">comptime</span> impl: <span class="tok-kw">anytype</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L313"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L314"> <span class="tok-kw">fn</span> <span class="tok-fn">parse</span>(arch: Target.Cpu.Arch, reader: <span class="tok-kw">anytype</span>) <span class="tok-type">anyerror</span>!?Target.Cpu {</span>
<span class="line" id="L315"> <span class="tok-kw">var</span> line_buf: [<span class="tok-number">1024</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L316"> <span class="tok-kw">var</span> obj: impl = .{};</span>
<span class="line" id="L317"></span>
<span class="line" id="L318"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L319"> <span class="tok-kw">const</span> line = (<span class="tok-kw">try</span> reader.readUntilDelimiterOrEof(&line_buf, <span class="tok-str">'\n'</span>)) <span class="tok-kw">orelse</span> <span class="tok-kw">break</span>;</span>
<span class="line" id="L320"> <span class="tok-kw">const</span> colon_pos = mem.indexOfScalar(<span class="tok-type">u8</span>, line, <span class="tok-str">':'</span>) <span class="tok-kw">orelse</span> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L321"> <span class="tok-kw">const</span> key = mem.trimRight(<span class="tok-type">u8</span>, line[<span class="tok-number">0</span>..colon_pos], <span class="tok-str">" \t"</span>);</span>
<span class="line" id="L322"> <span class="tok-kw">const</span> value = mem.trimLeft(<span class="tok-type">u8</span>, line[colon_pos + <span class="tok-number">1</span> ..], <span class="tok-str">" \t"</span>);</span>
<span class="line" id="L323"></span>
<span class="line" id="L324"> <span class="tok-kw">if</span> (!<span class="tok-kw">try</span> obj.line_hook(key, value))</span>
<span class="line" id="L325"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L326"> }</span>
<span class="line" id="L327"></span>
<span class="line" id="L328"> <span class="tok-kw">return</span> obj.finalize(arch);</span>
<span class="line" id="L329"> }</span>
<span class="line" id="L330"> };</span>
<span class="line" id="L331">}</span>
<span class="line" id="L332"></span>
<span class="line" id="L333"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">detectNativeCpuAndFeatures</span>() ?Target.Cpu {</span>
<span class="line" id="L334"> <span class="tok-kw">var</span> f = fs.openFileAbsolute(<span class="tok-str">"/proc/cpuinfo"</span>, .{ .intended_io_mode = .blocking }) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L335"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-null">null</span>,</span>
<span class="line" id="L336"> };</span>
<span class="line" id="L337"> <span class="tok-kw">defer</span> f.close();</span>
<span class="line" id="L338"></span>
<span class="line" id="L339"> <span class="tok-kw">const</span> current_arch = builtin.cpu.arch;</span>
<span class="line" id="L340"> <span class="tok-kw">switch</span> (current_arch) {</span>
<span class="line" id="L341"> .arm, .armeb, .thumb, .thumbeb, .aarch64, .aarch64_be, .aarch64_32 => {</span>
<span class="line" id="L342"> <span class="tok-kw">return</span> ArmCpuinfoParser.parse(current_arch, f.reader()) <span class="tok-kw">catch</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L343"> },</span>
<span class="line" id="L344"> .sparc64 => {</span>
<span class="line" id="L345"> <span class="tok-kw">return</span> SparcCpuinfoParser.parse(current_arch, f.reader()) <span class="tok-kw">catch</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L346"> },</span>
<span class="line" id="L347"> .powerpc, .powerpcle, .powerpc64, .powerpc64le => {</span>
<span class="line" id="L348"> <span class="tok-kw">return</span> PowerpcCpuinfoParser.parse(current_arch, f.reader()) <span class="tok-kw">catch</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L349"> },</span>
<span class="line" id="L350"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L351"> }</span>
<span class="line" id="L352"></span>
<span class="line" id="L353"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L354">}</span>
<span class="line" id="L355"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> ArrayList = std.ArrayList;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> process = std.process;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L7"></span>
<span class="line" id="L8"><span class="tok-kw">const</span> NativePaths = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L9"><span class="tok-kw">const</span> NativeTargetInfo = std.zig.system.NativeTargetInfo;</span>
<span class="line" id="L10"></span>
<span class="line" id="L11">include_dirs: ArrayList([:<span class="tok-number">0</span>]<span class="tok-type">u8</span>),</span>
<span class="line" id="L12">lib_dirs: ArrayList([:<span class="tok-number">0</span>]<span class="tok-type">u8</span>),</span>
<span class="line" id="L13">framework_dirs: ArrayList([:<span class="tok-number">0</span>]<span class="tok-type">u8</span>),</span>
<span class="line" id="L14">rpaths: ArrayList([:<span class="tok-number">0</span>]<span class="tok-type">u8</span>),</span>
<span class="line" id="L15">warnings: ArrayList([:<span class="tok-number">0</span>]<span class="tok-type">u8</span>),</span>
<span class="line" id="L16"></span>
<span class="line" id="L17"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">detect</span>(allocator: Allocator, native_info: NativeTargetInfo) !NativePaths {</span>
<span class="line" id="L18"> <span class="tok-kw">const</span> native_target = native_info.target;</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"> <span class="tok-kw">var</span> self: NativePaths = .{</span>
<span class="line" id="L21"> .include_dirs = ArrayList([:<span class="tok-number">0</span>]<span class="tok-type">u8</span>).init(allocator),</span>
<span class="line" id="L22"> .lib_dirs = ArrayList([:<span class="tok-number">0</span>]<span class="tok-type">u8</span>).init(allocator),</span>
<span class="line" id="L23"> .framework_dirs = ArrayList([:<span class="tok-number">0</span>]<span class="tok-type">u8</span>).init(allocator),</span>
<span class="line" id="L24"> .rpaths = ArrayList([:<span class="tok-number">0</span>]<span class="tok-type">u8</span>).init(allocator),</span>
<span class="line" id="L25"> .warnings = ArrayList([:<span class="tok-number">0</span>]<span class="tok-type">u8</span>).init(allocator),</span>
<span class="line" id="L26"> };</span>
<span class="line" id="L27"> <span class="tok-kw">errdefer</span> self.deinit();</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"> <span class="tok-kw">var</span> is_nix = <span class="tok-null">false</span>;</span>
<span class="line" id="L30"> <span class="tok-kw">if</span> (process.getEnvVarOwned(allocator, <span class="tok-str">"NIX_CFLAGS_COMPILE"</span>)) |nix_cflags_compile| {</span>
<span class="line" id="L31"> <span class="tok-kw">defer</span> allocator.free(nix_cflags_compile);</span>
<span class="line" id="L32"></span>
<span class="line" id="L33"> is_nix = <span class="tok-null">true</span>;</span>
<span class="line" id="L34"> <span class="tok-kw">var</span> it = mem.tokenizeScalar(<span class="tok-type">u8</span>, nix_cflags_compile, <span class="tok-str">' '</span>);</span>
<span class="line" id="L35"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L36"> <span class="tok-kw">const</span> word = it.next() <span class="tok-kw">orelse</span> <span class="tok-kw">break</span>;</span>
<span class="line" id="L37"> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, word, <span class="tok-str">"-isystem"</span>)) {</span>
<span class="line" id="L38"> <span class="tok-kw">const</span> include_path = it.next() <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L39"> <span class="tok-kw">try</span> self.addWarning(<span class="tok-str">"Expected argument after -isystem in NIX_CFLAGS_COMPILE"</span>);</span>
<span class="line" id="L40"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L41"> };</span>
<span class="line" id="L42"> <span class="tok-kw">try</span> self.addIncludeDir(include_path);</span>
<span class="line" id="L43"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, word, <span class="tok-str">"-iframework"</span>)) {</span>
<span class="line" id="L44"> <span class="tok-kw">const</span> framework_path = it.next() <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L45"> <span class="tok-kw">try</span> self.addWarning(<span class="tok-str">"Expected argument after -iframework in NIX_CFLAGS_COMPILE"</span>);</span>
<span class="line" id="L46"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L47"> };</span>
<span class="line" id="L48"> <span class="tok-kw">try</span> self.addFrameworkDir(framework_path);</span>
<span class="line" id="L49"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L50"> <span class="tok-kw">if</span> (mem.startsWith(<span class="tok-type">u8</span>, word, <span class="tok-str">"-frandom-seed="</span>)) {</span>
<span class="line" id="L51"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L52"> }</span>
<span class="line" id="L53"> <span class="tok-kw">try</span> self.addWarningFmt(<span class="tok-str">"Unrecognized C flag from NIX_CFLAGS_COMPILE: {s}"</span>, .{word});</span>
<span class="line" id="L54"> }</span>
<span class="line" id="L55"> }</span>
<span class="line" id="L56"> } <span class="tok-kw">else</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L57"> <span class="tok-kw">error</span>.InvalidUtf8 => {},</span>
<span class="line" id="L58"> <span class="tok-kw">error</span>.EnvironmentVariableNotFound => {},</span>
<span class="line" id="L59"> <span class="tok-kw">error</span>.OutOfMemory => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L60"> }</span>
<span class="line" id="L61"> <span class="tok-kw">if</span> (process.getEnvVarOwned(allocator, <span class="tok-str">"NIX_LDFLAGS"</span>)) |nix_ldflags| {</span>
<span class="line" id="L62"> <span class="tok-kw">defer</span> allocator.free(nix_ldflags);</span>
<span class="line" id="L63"></span>
<span class="line" id="L64"> is_nix = <span class="tok-null">true</span>;</span>
<span class="line" id="L65"> <span class="tok-kw">var</span> it = mem.tokenizeScalar(<span class="tok-type">u8</span>, nix_ldflags, <span class="tok-str">' '</span>);</span>
<span class="line" id="L66"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L67"> <span class="tok-kw">const</span> word = it.next() <span class="tok-kw">orelse</span> <span class="tok-kw">break</span>;</span>
<span class="line" id="L68"> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, word, <span class="tok-str">"-rpath"</span>)) {</span>
<span class="line" id="L69"> <span class="tok-kw">const</span> rpath = it.next() <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L70"> <span class="tok-kw">try</span> self.addWarning(<span class="tok-str">"Expected argument after -rpath in NIX_LDFLAGS"</span>);</span>
<span class="line" id="L71"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L72"> };</span>
<span class="line" id="L73"> <span class="tok-kw">try</span> self.addRPath(rpath);</span>
<span class="line" id="L74"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (word.len > <span class="tok-number">2</span> <span class="tok-kw">and</span> word[<span class="tok-number">0</span>] == <span class="tok-str">'-'</span> <span class="tok-kw">and</span> word[<span class="tok-number">1</span>] == <span class="tok-str">'L'</span>) {</span>
<span class="line" id="L75"> <span class="tok-kw">const</span> lib_path = word[<span class="tok-number">2</span>..];</span>
<span class="line" id="L76"> <span class="tok-kw">try</span> self.addLibDir(lib_path);</span>
<span class="line" id="L77"> <span class="tok-kw">try</span> self.addRPath(lib_path);</span>
<span class="line" id="L78"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L79"> <span class="tok-kw">try</span> self.addWarningFmt(<span class="tok-str">"Unrecognized C flag from NIX_LDFLAGS: {s}"</span>, .{word});</span>
<span class="line" id="L80"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L81"> }</span>
<span class="line" id="L82"> }</span>
<span class="line" id="L83"> } <span class="tok-kw">else</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L84"> <span class="tok-kw">error</span>.InvalidUtf8 => {},</span>
<span class="line" id="L85"> <span class="tok-kw">error</span>.EnvironmentVariableNotFound => {},</span>
<span class="line" id="L86"> <span class="tok-kw">error</span>.OutOfMemory => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L87"> }</span>
<span class="line" id="L88"> <span class="tok-kw">if</span> (is_nix) {</span>
<span class="line" id="L89"> <span class="tok-kw">return</span> self;</span>
<span class="line" id="L90"> }</span>
<span class="line" id="L91"></span>
<span class="line" id="L92"> <span class="tok-kw">if</span> (<span class="tok-kw">comptime</span> builtin.target.isDarwin()) {</span>
<span class="line" id="L93"> <span class="tok-kw">try</span> self.addIncludeDir(<span class="tok-str">"/usr/include"</span>);</span>
<span class="line" id="L94"> <span class="tok-kw">try</span> self.addLibDir(<span class="tok-str">"/usr/lib"</span>);</span>
<span class="line" id="L95"> <span class="tok-kw">try</span> self.addFrameworkDir(<span class="tok-str">"/System/Library/Frameworks"</span>);</span>
<span class="line" id="L96"></span>
<span class="line" id="L97"> <span class="tok-kw">if</span> (builtin.target.os.version_range.semver.min.major < <span class="tok-number">11</span>) {</span>
<span class="line" id="L98"> <span class="tok-kw">try</span> self.addIncludeDir(<span class="tok-str">"/usr/local/include"</span>);</span>
<span class="line" id="L99"> <span class="tok-kw">try</span> self.addLibDir(<span class="tok-str">"/usr/local/lib"</span>);</span>
<span class="line" id="L100"> <span class="tok-kw">try</span> self.addFrameworkDir(<span class="tok-str">"/Library/Frameworks"</span>);</span>
<span class="line" id="L101"> }</span>
<span class="line" id="L102"></span>
<span class="line" id="L103"> <span class="tok-kw">return</span> self;</span>
<span class="line" id="L104"> }</span>
<span class="line" id="L105"></span>
<span class="line" id="L106"> <span class="tok-kw">if</span> (builtin.os.tag == .solaris) {</span>
<span class="line" id="L107"> <span class="tok-kw">try</span> self.addLibDir(<span class="tok-str">"/usr/lib/64"</span>);</span>
<span class="line" id="L108"> <span class="tok-kw">try</span> self.addLibDir(<span class="tok-str">"/usr/local/lib/64"</span>);</span>
<span class="line" id="L109"> <span class="tok-kw">try</span> self.addLibDir(<span class="tok-str">"/lib/64"</span>);</span>
<span class="line" id="L110"></span>
<span class="line" id="L111"> <span class="tok-kw">try</span> self.addIncludeDir(<span class="tok-str">"/usr/include"</span>);</span>
<span class="line" id="L112"> <span class="tok-kw">try</span> self.addIncludeDir(<span class="tok-str">"/usr/local/include"</span>);</span>
<span class="line" id="L113"></span>
<span class="line" id="L114"> <span class="tok-kw">return</span> self;</span>
<span class="line" id="L115"> }</span>
<span class="line" id="L116"></span>
<span class="line" id="L117"> <span class="tok-kw">if</span> (builtin.os.tag != .windows) {</span>
<span class="line" id="L118"> <span class="tok-kw">const</span> triple = <span class="tok-kw">try</span> native_target.linuxTriple(allocator);</span>
<span class="line" id="L119"> <span class="tok-kw">defer</span> allocator.free(triple);</span>
<span class="line" id="L120"></span>
<span class="line" id="L121"> <span class="tok-kw">const</span> qual = native_target.ptrBitWidth();</span>
<span class="line" id="L122"></span>
<span class="line" id="L123"> <span class="tok-comment">// TODO: $ ld --verbose | grep SEARCH_DIR</span>
</span>
<span class="line" id="L124"> <span class="tok-comment">// the output contains some paths that end with lib64, maybe include them too?</span>
</span>
<span class="line" id="L125"> <span class="tok-comment">// TODO: what is the best possible order of things?</span>
</span>
<span class="line" id="L126"> <span class="tok-comment">// TODO: some of these are suspect and should only be added on some systems. audit needed.</span>
</span>
<span class="line" id="L127"></span>
<span class="line" id="L128"> <span class="tok-kw">try</span> self.addIncludeDir(<span class="tok-str">"/usr/local/include"</span>);</span>
<span class="line" id="L129"> <span class="tok-kw">try</span> self.addLibDirFmt(<span class="tok-str">"/usr/local/lib{d}"</span>, .{qual});</span>
<span class="line" id="L130"> <span class="tok-kw">try</span> self.addLibDir(<span class="tok-str">"/usr/local/lib"</span>);</span>
<span class="line" id="L131"></span>
<span class="line" id="L132"> <span class="tok-kw">try</span> self.addIncludeDirFmt(<span class="tok-str">"/usr/include/{s}"</span>, .{triple});</span>
<span class="line" id="L133"> <span class="tok-kw">try</span> self.addLibDirFmt(<span class="tok-str">"/usr/lib/{s}"</span>, .{triple});</span>
<span class="line" id="L134"></span>
<span class="line" id="L135"> <span class="tok-kw">try</span> self.addIncludeDir(<span class="tok-str">"/usr/include"</span>);</span>
<span class="line" id="L136"> <span class="tok-kw">try</span> self.addLibDirFmt(<span class="tok-str">"/lib{d}"</span>, .{qual});</span>
<span class="line" id="L137"> <span class="tok-kw">try</span> self.addLibDir(<span class="tok-str">"/lib"</span>);</span>
<span class="line" id="L138"> <span class="tok-kw">try</span> self.addLibDirFmt(<span class="tok-str">"/usr/lib{d}"</span>, .{qual});</span>
<span class="line" id="L139"> <span class="tok-kw">try</span> self.addLibDir(<span class="tok-str">"/usr/lib"</span>);</span>
<span class="line" id="L140"></span>
<span class="line" id="L141"> <span class="tok-comment">// example: on a 64-bit debian-based linux distro, with zlib installed from apt:</span>
</span>
<span class="line" id="L142"> <span class="tok-comment">// zlib.h is in /usr/include (added above)</span>
</span>
<span class="line" id="L143"> <span class="tok-comment">// libz.so.1 is in /lib/x86_64-linux-gnu (added here)</span>
</span>
<span class="line" id="L144"> <span class="tok-kw">try</span> self.addLibDirFmt(<span class="tok-str">"/lib/{s}"</span>, .{triple});</span>
<span class="line" id="L145"></span>
<span class="line" id="L146"> <span class="tok-comment">// Distros like guix don't use FHS, so they rely on environment</span>
</span>
<span class="line" id="L147"> <span class="tok-comment">// variables to search for headers and libraries.</span>
</span>
<span class="line" id="L148"> <span class="tok-comment">// We use os.getenv here since this part won't be executed on</span>
</span>
<span class="line" id="L149"> <span class="tok-comment">// windows, to get rid of unnecessary error handling.</span>
</span>
<span class="line" id="L150"> <span class="tok-kw">if</span> (std.os.getenv(<span class="tok-str">"C_INCLUDE_PATH"</span>)) |c_include_path| {</span>
<span class="line" id="L151"> <span class="tok-kw">var</span> it = mem.tokenizeScalar(<span class="tok-type">u8</span>, c_include_path, <span class="tok-str">':'</span>);</span>
<span class="line" id="L152"> <span class="tok-kw">while</span> (it.next()) |dir| {</span>
<span class="line" id="L153"> <span class="tok-kw">try</span> self.addIncludeDir(dir);</span>
<span class="line" id="L154"> }</span>
<span class="line" id="L155"> }</span>
<span class="line" id="L156"></span>
<span class="line" id="L157"> <span class="tok-kw">if</span> (std.os.getenv(<span class="tok-str">"CPLUS_INCLUDE_PATH"</span>)) |cplus_include_path| {</span>
<span class="line" id="L158"> <span class="tok-kw">var</span> it = mem.tokenizeScalar(<span class="tok-type">u8</span>, cplus_include_path, <span class="tok-str">':'</span>);</span>
<span class="line" id="L159"> <span class="tok-kw">while</span> (it.next()) |dir| {</span>
<span class="line" id="L160"> <span class="tok-kw">try</span> self.addIncludeDir(dir);</span>
<span class="line" id="L161"> }</span>
<span class="line" id="L162"> }</span>
<span class="line" id="L163"></span>
<span class="line" id="L164"> <span class="tok-kw">if</span> (std.os.getenv(<span class="tok-str">"LIBRARY_PATH"</span>)) |library_path| {</span>
<span class="line" id="L165"> <span class="tok-kw">var</span> it = mem.tokenizeScalar(<span class="tok-type">u8</span>, library_path, <span class="tok-str">':'</span>);</span>
<span class="line" id="L166"> <span class="tok-kw">while</span> (it.next()) |dir| {</span>
<span class="line" id="L167"> <span class="tok-kw">try</span> self.addLibDir(dir);</span>
<span class="line" id="L168"> }</span>
<span class="line" id="L169"> }</span>
<span class="line" id="L170"> }</span>
<span class="line" id="L171"></span>
<span class="line" id="L172"> <span class="tok-kw">return</span> self;</span>
<span class="line" id="L173">}</span>
<span class="line" id="L174"></span>
<span class="line" id="L175"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *NativePaths) <span class="tok-type">void</span> {</span>
<span class="line" id="L176"> deinitArray(&self.include_dirs);</span>
<span class="line" id="L177"> deinitArray(&self.lib_dirs);</span>
<span class="line" id="L178"> deinitArray(&self.framework_dirs);</span>
<span class="line" id="L179"> deinitArray(&self.rpaths);</span>
<span class="line" id="L180"> deinitArray(&self.warnings);</span>
<span class="line" id="L181"> self.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L182">}</span>
<span class="line" id="L183"></span>
<span class="line" id="L184"><span class="tok-kw">fn</span> <span class="tok-fn">deinitArray</span>(array: *ArrayList([:<span class="tok-number">0</span>]<span class="tok-type">u8</span>)) <span class="tok-type">void</span> {</span>
<span class="line" id="L185"> <span class="tok-kw">for</span> (array.items) |item| {</span>
<span class="line" id="L186"> array.allocator.free(item);</span>
<span class="line" id="L187"> }</span>
<span class="line" id="L188"> array.deinit();</span>
<span class="line" id="L189">}</span>
<span class="line" id="L190"></span>
<span class="line" id="L191"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addIncludeDir</span>(self: *NativePaths, s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L192"> <span class="tok-kw">return</span> self.appendArray(&self.include_dirs, s);</span>
<span class="line" id="L193">}</span>
<span class="line" id="L194"></span>
<span class="line" id="L195"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addIncludeDirFmt</span>(self: *NativePaths, <span class="tok-kw">comptime</span> fmt: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, args: <span class="tok-kw">anytype</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L196"> <span class="tok-kw">const</span> item = <span class="tok-kw">try</span> std.fmt.allocPrintZ(self.include_dirs.allocator, fmt, args);</span>
<span class="line" id="L197"> <span class="tok-kw">errdefer</span> self.include_dirs.allocator.free(item);</span>
<span class="line" id="L198"> <span class="tok-kw">try</span> self.include_dirs.append(item);</span>
<span class="line" id="L199">}</span>
<span class="line" id="L200"></span>
<span class="line" id="L201"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addLibDir</span>(self: *NativePaths, s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L202"> <span class="tok-kw">return</span> self.appendArray(&self.lib_dirs, s);</span>
<span class="line" id="L203">}</span>
<span class="line" id="L204"></span>
<span class="line" id="L205"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addLibDirFmt</span>(self: *NativePaths, <span class="tok-kw">comptime</span> fmt: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, args: <span class="tok-kw">anytype</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L206"> <span class="tok-kw">const</span> item = <span class="tok-kw">try</span> std.fmt.allocPrintZ(self.lib_dirs.allocator, fmt, args);</span>
<span class="line" id="L207"> <span class="tok-kw">errdefer</span> self.lib_dirs.allocator.free(item);</span>
<span class="line" id="L208"> <span class="tok-kw">try</span> self.lib_dirs.append(item);</span>
<span class="line" id="L209">}</span>
<span class="line" id="L210"></span>
<span class="line" id="L211"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addWarning</span>(self: *NativePaths, s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L212"> <span class="tok-kw">return</span> self.appendArray(&self.warnings, s);</span>
<span class="line" id="L213">}</span>
<span class="line" id="L214"></span>
<span class="line" id="L215"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addFrameworkDir</span>(self: *NativePaths, s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L216"> <span class="tok-kw">return</span> self.appendArray(&self.framework_dirs, s);</span>
<span class="line" id="L217">}</span>
<span class="line" id="L218"></span>
<span class="line" id="L219"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addFrameworkDirFmt</span>(self: *NativePaths, <span class="tok-kw">comptime</span> fmt: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, args: <span class="tok-kw">anytype</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L220"> <span class="tok-kw">const</span> item = <span class="tok-kw">try</span> std.fmt.allocPrintZ(self.framework_dirs.allocator, fmt, args);</span>
<span class="line" id="L221"> <span class="tok-kw">errdefer</span> self.framework_dirs.allocator.free(item);</span>
<span class="line" id="L222"> <span class="tok-kw">try</span> self.framework_dirs.append(item);</span>
<span class="line" id="L223">}</span>
<span class="line" id="L224"></span>
<span class="line" id="L225"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addWarningFmt</span>(self: *NativePaths, <span class="tok-kw">comptime</span> fmt: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, args: <span class="tok-kw">anytype</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L226"> <span class="tok-kw">const</span> item = <span class="tok-kw">try</span> std.fmt.allocPrintZ(self.warnings.allocator, fmt, args);</span>
<span class="line" id="L227"> <span class="tok-kw">errdefer</span> self.warnings.allocator.free(item);</span>
<span class="line" id="L228"> <span class="tok-kw">try</span> self.warnings.append(item);</span>
<span class="line" id="L229">}</span>
<span class="line" id="L230"></span>
<span class="line" id="L231"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">addRPath</span>(self: *NativePaths, s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L232"> <span class="tok-kw">return</span> self.appendArray(&self.rpaths, s);</span>
<span class="line" id="L233">}</span>
<span class="line" id="L234"></span>
<span class="line" id="L235"><span class="tok-kw">fn</span> <span class="tok-fn">appendArray</span>(self: *NativePaths, array: *ArrayList([:<span class="tok-number">0</span>]<span class="tok-type">u8</span>), s: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L236"> _ = self;</span>
<span class="line" id="L237"> <span class="tok-kw">const</span> item = <span class="tok-kw">try</span> array.allocator.dupeZ(<span class="tok-type">u8</span>, s);</span>
<span class="line" id="L238"> <span class="tok-kw">errdefer</span> array.allocator.free(item);</span>
<span class="line" id="L239"> <span class="tok-kw">try</span> array.append(item);</span>
<span class="line" id="L240">}</span>
<span class="line" id="L241"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> Target = std.Target;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> WindowsVersion = std.Target.Os.WindowsVersion;</span>
<span class="line" id="L8"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> PF = std.os.windows.PF;</span>
<span class="line" id="L9"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> REG = std.os.windows.REG;</span>
<span class="line" id="L10"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> IsProcessorFeaturePresent = std.os.windows.IsProcessorFeaturePresent;</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"><span class="tok-comment">/// Returns the highest known WindowsVersion deduced from reported runtime information.</span></span>
<span class="line" id="L13"><span class="tok-comment">/// Discards information about in-between versions we don't differentiate.</span></span>
<span class="line" id="L14"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">detectRuntimeVersion</span>() WindowsVersion {</span>
<span class="line" id="L15"> <span class="tok-kw">var</span> version_info: std.os.windows.RTL_OSVERSIONINFOW = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L16"> version_info.dwOSVersionInfoSize = <span class="tok-builtin">@sizeOf</span>(<span class="tok-builtin">@TypeOf</span>(version_info));</span>
<span class="line" id="L17"></span>
<span class="line" id="L18"> <span class="tok-kw">switch</span> (std.os.windows.ntdll.RtlGetVersion(&version_info)) {</span>
<span class="line" id="L19"> .SUCCESS => {},</span>
<span class="line" id="L20"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L21"> }</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"> <span class="tok-comment">// Starting from the system infos build a NTDDI-like version</span>
</span>
<span class="line" id="L24"> <span class="tok-comment">// constant whose format is:</span>
</span>
<span class="line" id="L25"> <span class="tok-comment">// B0 B1 B2 B3</span>
</span>
<span class="line" id="L26"> <span class="tok-comment">// `---` `` ``--> Sub-version (Starting from Windows 10 onwards)</span>
</span>
<span class="line" id="L27"> <span class="tok-comment">// \ `--> Service pack (Always zero in the constants defined)</span>
</span>
<span class="line" id="L28"> <span class="tok-comment">// `--> OS version (Major & minor)</span>
</span>
<span class="line" id="L29"> <span class="tok-kw">const</span> os_ver: <span class="tok-type">u16</span> = <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(version_info.dwMajorVersion & <span class="tok-number">0xff</span>)) << <span class="tok-number">8</span> |</span>
<span class="line" id="L30"> <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(version_info.dwMinorVersion & <span class="tok-number">0xff</span>));</span>
<span class="line" id="L31"> <span class="tok-kw">const</span> sp_ver: <span class="tok-type">u8</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L32"> <span class="tok-kw">const</span> sub_ver: <span class="tok-type">u8</span> = <span class="tok-kw">if</span> (os_ver >= <span class="tok-number">0x0A00</span>) subver: {</span>
<span class="line" id="L33"> <span class="tok-comment">// There's no other way to obtain this info beside</span>
</span>
<span class="line" id="L34"> <span class="tok-comment">// checking the build number against a known set of</span>
</span>
<span class="line" id="L35"> <span class="tok-comment">// values</span>
</span>
<span class="line" id="L36"> <span class="tok-kw">var</span> last_idx: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L37"> <span class="tok-kw">for</span> (WindowsVersion.known_win10_build_numbers, <span class="tok-number">0</span>..) |build, i| {</span>
<span class="line" id="L38"> <span class="tok-kw">if</span> (version_info.dwBuildNumber >= build)</span>
<span class="line" id="L39"> last_idx = i;</span>
<span class="line" id="L40"> }</span>
<span class="line" id="L41"> <span class="tok-kw">break</span> :subver <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(last_idx));</span>
<span class="line" id="L42"> } <span class="tok-kw">else</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L43"></span>
<span class="line" id="L44"> <span class="tok-kw">const</span> version: <span class="tok-type">u32</span> = <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, os_ver) << <span class="tok-number">16</span> | <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, sp_ver) << <span class="tok-number">8</span> | sub_ver;</span>
<span class="line" id="L45"></span>
<span class="line" id="L46"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(WindowsVersion, <span class="tok-builtin">@enumFromInt</span>(version));</span>
<span class="line" id="L47">}</span>
<span class="line" id="L48"></span>
<span class="line" id="L49"><span class="tok-comment">// Technically, a registry value can be as long as 1MB. However, MS recommends storing</span>
</span>
<span class="line" id="L50"><span class="tok-comment">// values larger than 2048 bytes in a file rather than directly in the registry, and since we</span>
</span>
<span class="line" id="L51"><span class="tok-comment">// are only accessing a system hive \Registry\Machine, we stick to MS guidelines.</span>
</span>
<span class="line" id="L52"><span class="tok-comment">// https://learn.microsoft.com/en-us/windows/win32/sysinfo/registry-element-size-limits</span>
</span>
<span class="line" id="L53"><span class="tok-kw">const</span> max_value_len = <span class="tok-number">2048</span>;</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"><span class="tok-kw">fn</span> <span class="tok-fn">getCpuInfoFromRegistry</span>(core: <span class="tok-type">usize</span>, args: <span class="tok-kw">anytype</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L56"> <span class="tok-kw">const</span> ArgsType = <span class="tok-builtin">@TypeOf</span>(args);</span>
<span class="line" id="L57"> <span class="tok-kw">const</span> args_type_info = <span class="tok-builtin">@typeInfo</span>(ArgsType);</span>
<span class="line" id="L58"></span>
<span class="line" id="L59"> <span class="tok-kw">if</span> (args_type_info != .Struct) {</span>
<span class="line" id="L60"> <span class="tok-builtin">@compileError</span>(<span class="tok-str">"expected tuple or struct argument, found "</span> ++ <span class="tok-builtin">@typeName</span>(ArgsType));</span>
<span class="line" id="L61"> }</span>
<span class="line" id="L62"></span>
<span class="line" id="L63"> <span class="tok-kw">const</span> fields_info = args_type_info.Struct.fields;</span>
<span class="line" id="L64"></span>
<span class="line" id="L65"> <span class="tok-comment">// Originally, I wanted to issue a single call with a more complex table structure such that we</span>
</span>
<span class="line" id="L66"> <span class="tok-comment">// would sequentially visit each CPU#d subkey in the registry and pull the value of interest into</span>
</span>
<span class="line" id="L67"> <span class="tok-comment">// a buffer, however, NT seems to be expecting a single buffer per each table meaning we would</span>
</span>
<span class="line" id="L68"> <span class="tok-comment">// end up pulling only the last CPU core info, overwriting everything else.</span>
</span>
<span class="line" id="L69"> <span class="tok-comment">// If anyone can come up with a solution to this, please do!</span>
</span>
<span class="line" id="L70"> <span class="tok-kw">const</span> table_size = <span class="tok-number">1</span> + fields_info.len;</span>
<span class="line" id="L71"> <span class="tok-kw">var</span> table: [table_size + <span class="tok-number">1</span>]std.os.windows.RTL_QUERY_REGISTRY_TABLE = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L72"></span>
<span class="line" id="L73"> <span class="tok-kw">const</span> topkey = std.unicode.utf8ToUtf16LeStringLiteral(<span class="tok-str">"\\Registry\\Machine\\HARDWARE\\DESCRIPTION\\System\\CentralProcessor"</span>);</span>
<span class="line" id="L74"></span>
<span class="line" id="L75"> <span class="tok-kw">const</span> max_cpu_buf = <span class="tok-number">4</span>;</span>
<span class="line" id="L76"> <span class="tok-kw">var</span> next_cpu_buf: [max_cpu_buf]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L77"> <span class="tok-kw">const</span> next_cpu = <span class="tok-kw">try</span> std.fmt.bufPrint(&next_cpu_buf, <span class="tok-str">"{d}"</span>, .{core});</span>
<span class="line" id="L78"></span>
<span class="line" id="L79"> <span class="tok-kw">var</span> subkey: [max_cpu_buf + <span class="tok-number">1</span>]<span class="tok-type">u16</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L80"> <span class="tok-kw">const</span> subkey_len = <span class="tok-kw">try</span> std.unicode.utf8ToUtf16Le(&subkey, next_cpu);</span>
<span class="line" id="L81"> subkey[subkey_len] = <span class="tok-number">0</span>;</span>
<span class="line" id="L82"></span>
<span class="line" id="L83"> table[<span class="tok-number">0</span>] = .{</span>
<span class="line" id="L84"> .QueryRoutine = <span class="tok-null">null</span>,</span>
<span class="line" id="L85"> .Flags = std.os.windows.RTL_QUERY_REGISTRY_SUBKEY | std.os.windows.RTL_QUERY_REGISTRY_REQUIRED,</span>
<span class="line" id="L86"> .Name = subkey[<span class="tok-number">0</span>..subkey_len :<span class="tok-number">0</span>],</span>
<span class="line" id="L87"> .EntryContext = <span class="tok-null">null</span>,</span>
<span class="line" id="L88"> .DefaultType = REG.NONE,</span>
<span class="line" id="L89"> .DefaultData = <span class="tok-null">null</span>,</span>
<span class="line" id="L90"> .DefaultLength = <span class="tok-number">0</span>,</span>
<span class="line" id="L91"> };</span>
<span class="line" id="L92"></span>
<span class="line" id="L93"> <span class="tok-kw">var</span> tmp_bufs: [fields_info.len][max_value_len]<span class="tok-type">u8</span> <span class="tok-kw">align</span>(<span class="tok-builtin">@alignOf</span>(std.os.windows.UNICODE_STRING)) = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L94"></span>
<span class="line" id="L95"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (fields_info, <span class="tok-number">0</span>..) |field, i| {</span>
<span class="line" id="L96"> <span class="tok-kw">const</span> ctx: *<span class="tok-type">anyopaque</span> = blk: {</span>
<span class="line" id="L97"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@field</span>(args, field.name).value_type) {</span>
<span class="line" id="L98"> REG.SZ,</span>
<span class="line" id="L99"> REG.EXPAND_SZ,</span>
<span class="line" id="L100"> REG.MULTI_SZ,</span>
<span class="line" id="L101"> => {</span>
<span class="line" id="L102"> <span class="tok-kw">comptime</span> assert(<span class="tok-builtin">@sizeOf</span>(std.os.windows.UNICODE_STRING) % <span class="tok-number">2</span> == <span class="tok-number">0</span>);</span>
<span class="line" id="L103"> <span class="tok-kw">const</span> unicode = <span class="tok-builtin">@as</span>(*std.os.windows.UNICODE_STRING, <span class="tok-builtin">@ptrCast</span>(&tmp_bufs[i]));</span>
<span class="line" id="L104"> unicode.* = .{</span>
<span class="line" id="L105"> .Length = <span class="tok-number">0</span>,</span>
<span class="line" id="L106"> .MaximumLength = max_value_len - <span class="tok-builtin">@sizeOf</span>(std.os.windows.UNICODE_STRING),</span>
<span class="line" id="L107"> .Buffer = <span class="tok-builtin">@as</span>([*]<span class="tok-type">u16</span>, <span class="tok-builtin">@ptrCast</span>(tmp_bufs[i][<span class="tok-builtin">@sizeOf</span>(std.os.windows.UNICODE_STRING)..])),</span>
<span class="line" id="L108"> };</span>
<span class="line" id="L109"> <span class="tok-kw">break</span> :blk unicode;</span>
<span class="line" id="L110"> },</span>
<span class="line" id="L111"></span>
<span class="line" id="L112"> REG.DWORD,</span>
<span class="line" id="L113"> REG.DWORD_BIG_ENDIAN,</span>
<span class="line" id="L114"> REG.QWORD,</span>
<span class="line" id="L115"> => <span class="tok-kw">break</span> :blk &tmp_bufs[i],</span>
<span class="line" id="L116"></span>
<span class="line" id="L117"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L118"> }</span>
<span class="line" id="L119"> };</span>
<span class="line" id="L120"></span>
<span class="line" id="L121"> <span class="tok-kw">var</span> key_buf: [max_value_len / <span class="tok-number">2</span> + <span class="tok-number">1</span>]<span class="tok-type">u16</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L122"> <span class="tok-kw">const</span> key_len = <span class="tok-kw">try</span> std.unicode.utf8ToUtf16Le(&key_buf, <span class="tok-builtin">@field</span>(args, field.name).key);</span>
<span class="line" id="L123"> key_buf[key_len] = <span class="tok-number">0</span>;</span>
<span class="line" id="L124"></span>
<span class="line" id="L125"> table[i + <span class="tok-number">1</span>] = .{</span>
<span class="line" id="L126"> .QueryRoutine = <span class="tok-null">null</span>,</span>
<span class="line" id="L127"> .Flags = std.os.windows.RTL_QUERY_REGISTRY_DIRECT | std.os.windows.RTL_QUERY_REGISTRY_REQUIRED,</span>
<span class="line" id="L128"> .Name = key_buf[<span class="tok-number">0</span>..key_len :<span class="tok-number">0</span>],</span>
<span class="line" id="L129"> .EntryContext = ctx,</span>
<span class="line" id="L130"> .DefaultType = REG.NONE,</span>
<span class="line" id="L131"> .DefaultData = <span class="tok-null">null</span>,</span>
<span class="line" id="L132"> .DefaultLength = <span class="tok-number">0</span>,</span>
<span class="line" id="L133"> };</span>
<span class="line" id="L134"> }</span>
<span class="line" id="L135"></span>
<span class="line" id="L136"> <span class="tok-comment">// Table sentinel</span>
</span>
<span class="line" id="L137"> table[table_size] = .{</span>
<span class="line" id="L138"> .QueryRoutine = <span class="tok-null">null</span>,</span>
<span class="line" id="L139"> .Flags = <span class="tok-number">0</span>,</span>
<span class="line" id="L140"> .Name = <span class="tok-null">null</span>,</span>
<span class="line" id="L141"> .EntryContext = <span class="tok-null">null</span>,</span>
<span class="line" id="L142"> .DefaultType = <span class="tok-number">0</span>,</span>
<span class="line" id="L143"> .DefaultData = <span class="tok-null">null</span>,</span>
<span class="line" id="L144"> .DefaultLength = <span class="tok-number">0</span>,</span>
<span class="line" id="L145"> };</span>
<span class="line" id="L146"></span>
<span class="line" id="L147"> <span class="tok-kw">const</span> res = std.os.windows.ntdll.RtlQueryRegistryValues(</span>
<span class="line" id="L148"> std.os.windows.RTL_REGISTRY_ABSOLUTE,</span>
<span class="line" id="L149"> topkey,</span>
<span class="line" id="L150"> &table,</span>
<span class="line" id="L151"> <span class="tok-null">null</span>,</span>
<span class="line" id="L152"> <span class="tok-null">null</span>,</span>
<span class="line" id="L153"> );</span>
<span class="line" id="L154"> <span class="tok-kw">switch</span> (res) {</span>
<span class="line" id="L155"> .SUCCESS => {</span>
<span class="line" id="L156"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (fields_info, <span class="tok-number">0</span>..) |field, i| <span class="tok-kw">switch</span> (<span class="tok-builtin">@field</span>(args, field.name).value_type) {</span>
<span class="line" id="L157"> REG.SZ,</span>
<span class="line" id="L158"> REG.EXPAND_SZ,</span>
<span class="line" id="L159"> REG.MULTI_SZ,</span>
<span class="line" id="L160"> => {</span>
<span class="line" id="L161"> <span class="tok-kw">var</span> buf = <span class="tok-builtin">@field</span>(args, field.name).value_buf;</span>
<span class="line" id="L162"> <span class="tok-kw">const</span> entry = <span class="tok-builtin">@as</span>(*<span class="tok-kw">align</span>(<span class="tok-number">1</span>) <span class="tok-kw">const</span> std.os.windows.UNICODE_STRING, <span class="tok-builtin">@ptrCast</span>(table[i + <span class="tok-number">1</span>].EntryContext));</span>
<span class="line" id="L163"> <span class="tok-kw">const</span> len = <span class="tok-kw">try</span> std.unicode.utf16leToUtf8(buf, entry.Buffer[<span class="tok-number">0</span> .. entry.Length / <span class="tok-number">2</span>]);</span>
<span class="line" id="L164"> buf[len] = <span class="tok-number">0</span>;</span>
<span class="line" id="L165"> },</span>
<span class="line" id="L166"></span>
<span class="line" id="L167"> REG.DWORD,</span>
<span class="line" id="L168"> REG.DWORD_BIG_ENDIAN,</span>
<span class="line" id="L169"> REG.QWORD,</span>
<span class="line" id="L170"> => {</span>
<span class="line" id="L171"> <span class="tok-kw">const</span> entry = <span class="tok-builtin">@as</span>([*]<span class="tok-kw">align</span>(<span class="tok-number">1</span>) <span class="tok-kw">const</span> <span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(table[i + <span class="tok-number">1</span>].EntryContext));</span>
<span class="line" id="L172"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@field</span>(args, field.name).value_type) {</span>
<span class="line" id="L173"> REG.DWORD, REG.DWORD_BIG_ENDIAN => {</span>
<span class="line" id="L174"> <span class="tok-builtin">@memcpy</span>(<span class="tok-builtin">@field</span>(args, field.name).value_buf[<span class="tok-number">0</span>..<span class="tok-number">4</span>], entry[<span class="tok-number">0</span>..<span class="tok-number">4</span>]);</span>
<span class="line" id="L175"> },</span>
<span class="line" id="L176"> REG.QWORD => {</span>
<span class="line" id="L177"> <span class="tok-builtin">@memcpy</span>(<span class="tok-builtin">@field</span>(args, field.name).value_buf[<span class="tok-number">0</span>..<span class="tok-number">8</span>], entry[<span class="tok-number">0</span>..<span class="tok-number">8</span>]);</span>
<span class="line" id="L178"> },</span>
<span class="line" id="L179"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L180"> }</span>
<span class="line" id="L181"> },</span>
<span class="line" id="L182"></span>
<span class="line" id="L183"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L184"> };</span>
<span class="line" id="L185"> },</span>
<span class="line" id="L186"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Unexpected,</span>
<span class="line" id="L187"> }</span>
<span class="line" id="L188">}</span>
<span class="line" id="L189"></span>
<span class="line" id="L190"><span class="tok-kw">fn</span> <span class="tok-fn">setFeature</span>(<span class="tok-kw">comptime</span> Feature: <span class="tok-type">type</span>, cpu: *Target.Cpu, feature: Feature, enabled: <span class="tok-type">bool</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L191"> <span class="tok-kw">const</span> idx = <span class="tok-builtin">@as</span>(Target.Cpu.Feature.Set.Index, <span class="tok-builtin">@intFromEnum</span>(feature));</span>
<span class="line" id="L192"></span>
<span class="line" id="L193"> <span class="tok-kw">if</span> (enabled) cpu.features.addFeature(idx) <span class="tok-kw">else</span> cpu.features.removeFeature(idx);</span>
<span class="line" id="L194">}</span>
<span class="line" id="L195"></span>
<span class="line" id="L196"><span class="tok-kw">fn</span> <span class="tok-fn">getCpuCount</span>() <span class="tok-type">usize</span> {</span>
<span class="line" id="L197"> <span class="tok-kw">return</span> std.os.windows.peb().NumberOfProcessors;</span>
<span class="line" id="L198">}</span>
<span class="line" id="L199"></span>
<span class="line" id="L200"><span class="tok-comment">/// If the fine-grained detection of CPU features via Win registry fails,</span></span>
<span class="line" id="L201"><span class="tok-comment">/// we fallback to a generic CPU model but we override the feature set</span></span>
<span class="line" id="L202"><span class="tok-comment">/// using `SharedUserData` contents.</span></span>
<span class="line" id="L203"><span class="tok-comment">/// This is effectively what LLVM does for all ARM chips on Windows.</span></span>
<span class="line" id="L204"><span class="tok-kw">fn</span> <span class="tok-fn">genericCpuAndNativeFeatures</span>(arch: Target.Cpu.Arch) Target.Cpu {</span>
<span class="line" id="L205"> <span class="tok-kw">var</span> cpu = Target.Cpu{</span>
<span class="line" id="L206"> .arch = arch,</span>
<span class="line" id="L207"> .model = Target.Cpu.Model.generic(arch),</span>
<span class="line" id="L208"> .features = Target.Cpu.Feature.Set.empty,</span>
<span class="line" id="L209"> };</span>
<span class="line" id="L210"></span>
<span class="line" id="L211"> <span class="tok-kw">switch</span> (arch) {</span>
<span class="line" id="L212"> .aarch64, .aarch64_be, .aarch64_32 => {</span>
<span class="line" id="L213"> <span class="tok-kw">const</span> Feature = Target.aarch64.Feature;</span>
<span class="line" id="L214"></span>
<span class="line" id="L215"> <span class="tok-comment">// Override any features that are either present or absent</span>
</span>
<span class="line" id="L216"> setFeature(Feature, &cpu, .neon, IsProcessorFeaturePresent(PF.ARM_NEON_INSTRUCTIONS_AVAILABLE));</span>
<span class="line" id="L217"> setFeature(Feature, &cpu, .crc, IsProcessorFeaturePresent(PF.ARM_V8_CRC32_INSTRUCTIONS_AVAILABLE));</span>
<span class="line" id="L218"> setFeature(Feature, &cpu, .crypto, IsProcessorFeaturePresent(PF.ARM_V8_CRYPTO_INSTRUCTIONS_AVAILABLE));</span>
<span class="line" id="L219"> setFeature(Feature, &cpu, .lse, IsProcessorFeaturePresent(PF.ARM_V81_ATOMIC_INSTRUCTIONS_AVAILABLE));</span>
<span class="line" id="L220"> setFeature(Feature, &cpu, .dotprod, IsProcessorFeaturePresent(PF.ARM_V82_DP_INSTRUCTIONS_AVAILABLE));</span>
<span class="line" id="L221"> setFeature(Feature, &cpu, .jsconv, IsProcessorFeaturePresent(PF.ARM_V83_JSCVT_INSTRUCTIONS_AVAILABLE));</span>
<span class="line" id="L222"> },</span>
<span class="line" id="L223"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L224"> }</span>
<span class="line" id="L225"></span>
<span class="line" id="L226"> <span class="tok-kw">return</span> cpu;</span>
<span class="line" id="L227">}</span>
<span class="line" id="L228"></span>
<span class="line" id="L229"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">detectNativeCpuAndFeatures</span>() ?Target.Cpu {</span>
<span class="line" id="L230"> <span class="tok-kw">const</span> current_arch = builtin.cpu.arch;</span>
<span class="line" id="L231"> <span class="tok-kw">const</span> cpu: ?Target.Cpu = <span class="tok-kw">switch</span> (current_arch) {</span>
<span class="line" id="L232"> .aarch64, .aarch64_be, .aarch64_32 => blk: {</span>
<span class="line" id="L233"> <span class="tok-kw">var</span> cores: [<span class="tok-number">128</span>]Target.Cpu = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L234"> <span class="tok-kw">const</span> core_count = getCpuCount();</span>
<span class="line" id="L235"></span>
<span class="line" id="L236"> <span class="tok-kw">if</span> (core_count > cores.len) <span class="tok-kw">break</span> :blk <span class="tok-null">null</span>;</span>
<span class="line" id="L237"></span>
<span class="line" id="L238"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L239"> <span class="tok-kw">while</span> (i < core_count) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L240"> <span class="tok-comment">// Backing datastore</span>
</span>
<span class="line" id="L241"> <span class="tok-kw">var</span> registers: [<span class="tok-number">12</span>]<span class="tok-type">u64</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L242"></span>
<span class="line" id="L243"> <span class="tok-comment">// Registry key to system ID register mapping</span>
</span>
<span class="line" id="L244"> <span class="tok-comment">// CP 4000 -> MIDR_EL1</span>
</span>
<span class="line" id="L245"> <span class="tok-comment">// CP 4020 -> ID_AA64PFR0_EL1</span>
</span>
<span class="line" id="L246"> <span class="tok-comment">// CP 4021 -> ID_AA64PFR1_EL1</span>
</span>
<span class="line" id="L247"> <span class="tok-comment">// CP 4028 -> ID_AA64DFR0_EL1</span>
</span>
<span class="line" id="L248"> <span class="tok-comment">// CP 4029 -> ID_AA64DFR1_EL1</span>
</span>
<span class="line" id="L249"> <span class="tok-comment">// CP 402C -> ID_AA64AFR0_EL1</span>
</span>
<span class="line" id="L250"> <span class="tok-comment">// CP 402D -> ID_AA64AFR1_EL1</span>
</span>
<span class="line" id="L251"> <span class="tok-comment">// CP 4030 -> ID_AA64ISAR0_EL1</span>
</span>
<span class="line" id="L252"> <span class="tok-comment">// CP 4031 -> ID_AA64ISAR1_EL1</span>
</span>
<span class="line" id="L253"> <span class="tok-comment">// CP 4038 -> ID_AA64MMFR0_EL1</span>
</span>
<span class="line" id="L254"> <span class="tok-comment">// CP 4039 -> ID_AA64MMFR1_EL1</span>
</span>
<span class="line" id="L255"> <span class="tok-comment">// CP 403A -> ID_AA64MMFR2_EL1</span>
</span>
<span class="line" id="L256"> getCpuInfoFromRegistry(i, .{</span>
<span class="line" id="L257"> .{ .key = <span class="tok-str">"CP 4000"</span>, .value_type = REG.QWORD, .value_buf = <span class="tok-builtin">@as</span>(*[<span class="tok-number">8</span>]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&registers[<span class="tok-number">0</span>])) },</span>
<span class="line" id="L258"> .{ .key = <span class="tok-str">"CP 4020"</span>, .value_type = REG.QWORD, .value_buf = <span class="tok-builtin">@as</span>(*[<span class="tok-number">8</span>]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&registers[<span class="tok-number">1</span>])) },</span>
<span class="line" id="L259"> .{ .key = <span class="tok-str">"CP 4021"</span>, .value_type = REG.QWORD, .value_buf = <span class="tok-builtin">@as</span>(*[<span class="tok-number">8</span>]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&registers[<span class="tok-number">2</span>])) },</span>
<span class="line" id="L260"> .{ .key = <span class="tok-str">"CP 4028"</span>, .value_type = REG.QWORD, .value_buf = <span class="tok-builtin">@as</span>(*[<span class="tok-number">8</span>]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&registers[<span class="tok-number">3</span>])) },</span>
<span class="line" id="L261"> .{ .key = <span class="tok-str">"CP 4029"</span>, .value_type = REG.QWORD, .value_buf = <span class="tok-builtin">@as</span>(*[<span class="tok-number">8</span>]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&registers[<span class="tok-number">4</span>])) },</span>
<span class="line" id="L262"> .{ .key = <span class="tok-str">"CP 402C"</span>, .value_type = REG.QWORD, .value_buf = <span class="tok-builtin">@as</span>(*[<span class="tok-number">8</span>]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&registers[<span class="tok-number">5</span>])) },</span>
<span class="line" id="L263"> .{ .key = <span class="tok-str">"CP 402D"</span>, .value_type = REG.QWORD, .value_buf = <span class="tok-builtin">@as</span>(*[<span class="tok-number">8</span>]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&registers[<span class="tok-number">6</span>])) },</span>
<span class="line" id="L264"> .{ .key = <span class="tok-str">"CP 4030"</span>, .value_type = REG.QWORD, .value_buf = <span class="tok-builtin">@as</span>(*[<span class="tok-number">8</span>]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&registers[<span class="tok-number">7</span>])) },</span>
<span class="line" id="L265"> .{ .key = <span class="tok-str">"CP 4031"</span>, .value_type = REG.QWORD, .value_buf = <span class="tok-builtin">@as</span>(*[<span class="tok-number">8</span>]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&registers[<span class="tok-number">8</span>])) },</span>
<span class="line" id="L266"> .{ .key = <span class="tok-str">"CP 4038"</span>, .value_type = REG.QWORD, .value_buf = <span class="tok-builtin">@as</span>(*[<span class="tok-number">8</span>]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&registers[<span class="tok-number">9</span>])) },</span>
<span class="line" id="L267"> .{ .key = <span class="tok-str">"CP 4039"</span>, .value_type = REG.QWORD, .value_buf = <span class="tok-builtin">@as</span>(*[<span class="tok-number">8</span>]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&registers[<span class="tok-number">10</span>])) },</span>
<span class="line" id="L268"> .{ .key = <span class="tok-str">"CP 403A"</span>, .value_type = REG.QWORD, .value_buf = <span class="tok-builtin">@as</span>(*[<span class="tok-number">8</span>]<span class="tok-type">u8</span>, <span class="tok-builtin">@ptrCast</span>(&registers[<span class="tok-number">11</span>])) },</span>
<span class="line" id="L269"> }) <span class="tok-kw">catch</span> <span class="tok-kw">break</span> :blk <span class="tok-null">null</span>;</span>
<span class="line" id="L270"></span>
<span class="line" id="L271"> cores[i] = <span class="tok-builtin">@import</span>(<span class="tok-str">"arm.zig"</span>).aarch64.detectNativeCpuAndFeatures(current_arch, registers) <span class="tok-kw">orelse</span></span>
<span class="line" id="L272"> <span class="tok-kw">break</span> :blk <span class="tok-null">null</span>;</span>
<span class="line" id="L273"> }</span>
<span class="line" id="L274"></span>
<span class="line" id="L275"> <span class="tok-comment">// Pick the first core, usually LITTLE in big.LITTLE architecture.</span>
</span>
<span class="line" id="L276"> <span class="tok-kw">break</span> :blk cores[<span class="tok-number">0</span>];</span>
<span class="line" id="L277"> },</span>
<span class="line" id="L278"> <span class="tok-kw">else</span> => <span class="tok-null">null</span>,</span>
<span class="line" id="L279"> };</span>
<span class="line" id="L280"> <span class="tok-kw">return</span> cpu <span class="tok-kw">orelse</span> genericCpuAndNativeFeatures(current_arch);</span>
<span class="line" id="L281">}</span>
<span class="line" id="L282"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> fs = std.fs;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> elf = std.elf;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> native_endian = builtin.cpu.arch.endian();</span>
<span class="line" id="L8"></span>
<span class="line" id="L9"><span class="tok-kw">const</span> NativeTargetInfo = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L10"><span class="tok-kw">const</span> Target = std.Target;</span>
<span class="line" id="L11"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L12"><span class="tok-kw">const</span> CrossTarget = std.zig.CrossTarget;</span>
<span class="line" id="L13"><span class="tok-kw">const</span> windows = std.zig.system.windows;</span>
<span class="line" id="L14"><span class="tok-kw">const</span> darwin = std.zig.system.darwin;</span>
<span class="line" id="L15"><span class="tok-kw">const</span> linux = std.zig.system.linux;</span>
<span class="line" id="L16"></span>
<span class="line" id="L17">target: Target,</span>
<span class="line" id="L18">dynamic_linker: DynamicLinker = DynamicLinker{},</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> DynamicLinker = Target.DynamicLinker;</span>
<span class="line" id="L21"></span>
<span class="line" id="L22"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> DetectError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L23"> FileSystem,</span>
<span class="line" id="L24"> SystemResources,</span>
<span class="line" id="L25"> SymLinkLoop,</span>
<span class="line" id="L26"> ProcessFdQuotaExceeded,</span>
<span class="line" id="L27"> SystemFdQuotaExceeded,</span>
<span class="line" id="L28"> DeviceBusy,</span>
<span class="line" id="L29"> OSVersionDetectionFail,</span>
<span class="line" id="L30"> Unexpected,</span>
<span class="line" id="L31">};</span>
<span class="line" id="L32"></span>
<span class="line" id="L33"><span class="tok-comment">/// Given a `CrossTarget`, which specifies in detail which parts of the target should be detected</span></span>
<span class="line" id="L34"><span class="tok-comment">/// natively, which should be standard or default, and which are provided explicitly, this function</span></span>
<span class="line" id="L35"><span class="tok-comment">/// resolves the native components by detecting the native system, and then resolves standard/default parts</span></span>
<span class="line" id="L36"><span class="tok-comment">/// relative to that.</span></span>
<span class="line" id="L37"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">detect</span>(cross_target: CrossTarget) DetectError!NativeTargetInfo {</span>
<span class="line" id="L38"> <span class="tok-kw">var</span> os = cross_target.getOsTag().defaultVersionRange(cross_target.getCpuArch());</span>
<span class="line" id="L39"> <span class="tok-kw">if</span> (cross_target.os_tag == <span class="tok-null">null</span>) {</span>
<span class="line" id="L40"> <span class="tok-kw">switch</span> (builtin.target.os.tag) {</span>
<span class="line" id="L41"> .linux => {</span>
<span class="line" id="L42"> <span class="tok-kw">const</span> uts = std.os.uname();</span>
<span class="line" id="L43"> <span class="tok-kw">const</span> release = mem.sliceTo(&uts.release, <span class="tok-number">0</span>);</span>
<span class="line" id="L44"> <span class="tok-comment">// The release field sometimes has a weird format,</span>
</span>
<span class="line" id="L45"> <span class="tok-comment">// `Version.parse` will attempt to find some meaningful interpretation.</span>
</span>
<span class="line" id="L46"> <span class="tok-kw">if</span> (std.SemanticVersion.parse(release)) |ver| {</span>
<span class="line" id="L47"> os.version_range.linux.range.min = ver;</span>
<span class="line" id="L48"> os.version_range.linux.range.max = ver;</span>
<span class="line" id="L49"> } <span class="tok-kw">else</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L50"> <span class="tok-kw">error</span>.Overflow => {},</span>
<span class="line" id="L51"> <span class="tok-kw">error</span>.InvalidVersion => {},</span>
<span class="line" id="L52"> }</span>
<span class="line" id="L53"> },</span>
<span class="line" id="L54"> .solaris => {</span>
<span class="line" id="L55"> <span class="tok-kw">const</span> uts = std.os.uname();</span>
<span class="line" id="L56"> <span class="tok-kw">const</span> release = mem.sliceTo(&uts.release, <span class="tok-number">0</span>);</span>
<span class="line" id="L57"> <span class="tok-kw">if</span> (std.SemanticVersion.parse(release)) |ver| {</span>
<span class="line" id="L58"> os.version_range.semver.min = ver;</span>
<span class="line" id="L59"> os.version_range.semver.max = ver;</span>
<span class="line" id="L60"> } <span class="tok-kw">else</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L61"> <span class="tok-kw">error</span>.Overflow => {},</span>
<span class="line" id="L62"> <span class="tok-kw">error</span>.InvalidVersion => {},</span>
<span class="line" id="L63"> }</span>
<span class="line" id="L64"> },</span>
<span class="line" id="L65"> .windows => {</span>
<span class="line" id="L66"> <span class="tok-kw">const</span> detected_version = windows.detectRuntimeVersion();</span>
<span class="line" id="L67"> os.version_range.windows.min = detected_version;</span>
<span class="line" id="L68"> os.version_range.windows.max = detected_version;</span>
<span class="line" id="L69"> },</span>
<span class="line" id="L70"> .macos => <span class="tok-kw">try</span> darwin.macos.detect(&os),</span>
<span class="line" id="L71"> .freebsd, .netbsd, .dragonfly => {</span>
<span class="line" id="L72"> <span class="tok-kw">const</span> key = <span class="tok-kw">switch</span> (builtin.target.os.tag) {</span>
<span class="line" id="L73"> .freebsd => <span class="tok-str">"kern.osreldate"</span>,</span>
<span class="line" id="L74"> .netbsd, .dragonfly => <span class="tok-str">"kern.osrevision"</span>,</span>
<span class="line" id="L75"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L76"> };</span>
<span class="line" id="L77"> <span class="tok-kw">var</span> value: <span class="tok-type">u32</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L78"> <span class="tok-kw">var</span> len: <span class="tok-type">usize</span> = <span class="tok-builtin">@sizeOf</span>(<span class="tok-builtin">@TypeOf</span>(value));</span>
<span class="line" id="L79"></span>
<span class="line" id="L80"> std.os.sysctlbynameZ(key, &value, &len, <span class="tok-null">null</span>, <span class="tok-number">0</span>) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L81"> <span class="tok-kw">error</span>.NameTooLong => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// constant, known good value</span>
</span>
<span class="line" id="L82"> <span class="tok-kw">error</span>.PermissionDenied => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// only when setting values,</span>
</span>
<span class="line" id="L83"> <span class="tok-kw">error</span>.SystemResources => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// memory already on the stack</span>
</span>
<span class="line" id="L84"> <span class="tok-kw">error</span>.UnknownName => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// constant, known good value</span>
</span>
<span class="line" id="L85"> <span class="tok-kw">error</span>.Unexpected => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OSVersionDetectionFail,</span>
<span class="line" id="L86"> };</span>
<span class="line" id="L87"></span>
<span class="line" id="L88"> <span class="tok-kw">switch</span> (builtin.target.os.tag) {</span>
<span class="line" id="L89"> .freebsd => {</span>
<span class="line" id="L90"> <span class="tok-comment">// https://www.freebsd.org/doc/en_US.ISO8859-1/books/porters-handbook/versions.html</span>
</span>
<span class="line" id="L91"> <span class="tok-comment">// Major * 100,000 has been convention since FreeBSD 2.2 (1997)</span>
</span>
<span class="line" id="L92"> <span class="tok-comment">// Minor * 1(0),000 summed has been convention since FreeBSD 2.2 (1997)</span>
</span>
<span class="line" id="L93"> <span class="tok-comment">// e.g. 492101 = 4.11-STABLE = 4.(9+2)</span>
</span>
<span class="line" id="L94"> <span class="tok-kw">const</span> major = value / <span class="tok-number">100_000</span>;</span>
<span class="line" id="L95"> <span class="tok-kw">const</span> minor1 = value % <span class="tok-number">100_000</span> / <span class="tok-number">10_000</span>; <span class="tok-comment">// usually 0 since 5.1</span>
</span>
<span class="line" id="L96"> <span class="tok-kw">const</span> minor2 = value % <span class="tok-number">10_000</span> / <span class="tok-number">1_000</span>; <span class="tok-comment">// 0 before 5.1, minor version since</span>
</span>
<span class="line" id="L97"> <span class="tok-kw">const</span> patch = value % <span class="tok-number">1_000</span>;</span>
<span class="line" id="L98"> os.version_range.semver.min = .{ .major = major, .minor = minor1 + minor2, .patch = patch };</span>
<span class="line" id="L99"> os.version_range.semver.max = os.version_range.semver.min;</span>
<span class="line" id="L100"> },</span>
<span class="line" id="L101"> .netbsd => {</span>
<span class="line" id="L102"> <span class="tok-comment">// #define __NetBSD_Version__ MMmmrrpp00</span>
</span>
<span class="line" id="L103"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L104"> <span class="tok-comment">// M = major version</span>
</span>
<span class="line" id="L105"> <span class="tok-comment">// m = minor version; a minor number of 99 indicates current.</span>
</span>
<span class="line" id="L106"> <span class="tok-comment">// r = 0 (*)</span>
</span>
<span class="line" id="L107"> <span class="tok-comment">// p = patchlevel</span>
</span>
<span class="line" id="L108"> <span class="tok-kw">const</span> major = value / <span class="tok-number">100_000_000</span>;</span>
<span class="line" id="L109"> <span class="tok-kw">const</span> minor = value % <span class="tok-number">100_000_000</span> / <span class="tok-number">1_000_000</span>;</span>
<span class="line" id="L110"> <span class="tok-kw">const</span> patch = value % <span class="tok-number">10_000</span> / <span class="tok-number">100</span>;</span>
<span class="line" id="L111"> os.version_range.semver.min = .{ .major = major, .minor = minor, .patch = patch };</span>
<span class="line" id="L112"> os.version_range.semver.max = os.version_range.semver.min;</span>
<span class="line" id="L113"> },</span>
<span class="line" id="L114"> .dragonfly => {</span>
<span class="line" id="L115"> <span class="tok-comment">// https://github.com/DragonFlyBSD/DragonFlyBSD/blob/cb2cde83771754aeef9bb3251ee48959138dec87/Makefile.inc1#L15-L17</span>
</span>
<span class="line" id="L116"> <span class="tok-comment">// flat base10 format: Mmmmpp</span>
</span>
<span class="line" id="L117"> <span class="tok-comment">// M = major</span>
</span>
<span class="line" id="L118"> <span class="tok-comment">// m = minor; odd-numbers indicate current dev branch</span>
</span>
<span class="line" id="L119"> <span class="tok-comment">// p = patch</span>
</span>
<span class="line" id="L120"> <span class="tok-kw">const</span> major = value / <span class="tok-number">100_000</span>;</span>
<span class="line" id="L121"> <span class="tok-kw">const</span> minor = value % <span class="tok-number">100_000</span> / <span class="tok-number">100</span>;</span>
<span class="line" id="L122"> <span class="tok-kw">const</span> patch = value % <span class="tok-number">100</span>;</span>
<span class="line" id="L123"> os.version_range.semver.min = .{ .major = major, .minor = minor, .patch = patch };</span>
<span class="line" id="L124"> os.version_range.semver.max = os.version_range.semver.min;</span>
<span class="line" id="L125"> },</span>
<span class="line" id="L126"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L127"> }</span>
<span class="line" id="L128"> },</span>
<span class="line" id="L129"> .openbsd => {</span>
<span class="line" id="L130"> <span class="tok-kw">const</span> mib: [<span class="tok-number">2</span>]<span class="tok-type">c_int</span> = [_]<span class="tok-type">c_int</span>{</span>
<span class="line" id="L131"> std.os.CTL.KERN,</span>
<span class="line" id="L132"> std.os.KERN.OSRELEASE,</span>
<span class="line" id="L133"> };</span>
<span class="line" id="L134"> <span class="tok-kw">var</span> buf: [<span class="tok-number">64</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L135"> <span class="tok-comment">// consider that sysctl result includes null-termination</span>
</span>
<span class="line" id="L136"> <span class="tok-comment">// reserve 1 byte to ensure we never overflow when appending ".0"</span>
</span>
<span class="line" id="L137"> <span class="tok-kw">var</span> len: <span class="tok-type">usize</span> = buf.len - <span class="tok-number">1</span>;</span>
<span class="line" id="L138"></span>
<span class="line" id="L139"> std.os.sysctl(&mib, &buf, &len, <span class="tok-null">null</span>, <span class="tok-number">0</span>) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L140"> <span class="tok-kw">error</span>.NameTooLong => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// constant, known good value</span>
</span>
<span class="line" id="L141"> <span class="tok-kw">error</span>.PermissionDenied => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// only when setting values,</span>
</span>
<span class="line" id="L142"> <span class="tok-kw">error</span>.SystemResources => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// memory already on the stack</span>
</span>
<span class="line" id="L143"> <span class="tok-kw">error</span>.UnknownName => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// constant, known good value</span>
</span>
<span class="line" id="L144"> <span class="tok-kw">error</span>.Unexpected => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OSVersionDetectionFail,</span>
<span class="line" id="L145"> };</span>
<span class="line" id="L146"></span>
<span class="line" id="L147"> <span class="tok-comment">// append ".0" to satisfy semver</span>
</span>
<span class="line" id="L148"> buf[len - <span class="tok-number">1</span>] = <span class="tok-str">'.'</span>;</span>
<span class="line" id="L149"> buf[len] = <span class="tok-str">'0'</span>;</span>
<span class="line" id="L150"> len += <span class="tok-number">1</span>;</span>
<span class="line" id="L151"></span>
<span class="line" id="L152"> <span class="tok-kw">if</span> (std.SemanticVersion.parse(buf[<span class="tok-number">0</span>..len])) |ver| {</span>
<span class="line" id="L153"> os.version_range.semver.min = ver;</span>
<span class="line" id="L154"> os.version_range.semver.max = ver;</span>
<span class="line" id="L155"> } <span class="tok-kw">else</span> |_| {</span>
<span class="line" id="L156"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OSVersionDetectionFail;</span>
<span class="line" id="L157"> }</span>
<span class="line" id="L158"> },</span>
<span class="line" id="L159"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L160"> <span class="tok-comment">// Unimplemented, fall back to default version range.</span>
</span>
<span class="line" id="L161"> },</span>
<span class="line" id="L162"> }</span>
<span class="line" id="L163"> }</span>
<span class="line" id="L164"></span>
<span class="line" id="L165"> <span class="tok-kw">if</span> (cross_target.os_version_min) |min| <span class="tok-kw">switch</span> (min) {</span>
<span class="line" id="L166"> .none => {},</span>
<span class="line" id="L167"> .semver => |semver| <span class="tok-kw">switch</span> (cross_target.getOsTag()) {</span>
<span class="line" id="L168"> .linux => os.version_range.linux.range.min = semver,</span>
<span class="line" id="L169"> <span class="tok-kw">else</span> => os.version_range.semver.min = semver,</span>
<span class="line" id="L170"> },</span>
<span class="line" id="L171"> .windows => |win_ver| os.version_range.windows.min = win_ver,</span>
<span class="line" id="L172"> };</span>
<span class="line" id="L173"></span>
<span class="line" id="L174"> <span class="tok-kw">if</span> (cross_target.os_version_max) |max| <span class="tok-kw">switch</span> (max) {</span>
<span class="line" id="L175"> .none => {},</span>
<span class="line" id="L176"> .semver => |semver| <span class="tok-kw">switch</span> (cross_target.getOsTag()) {</span>
<span class="line" id="L177"> .linux => os.version_range.linux.range.max = semver,</span>
<span class="line" id="L178"> <span class="tok-kw">else</span> => os.version_range.semver.max = semver,</span>
<span class="line" id="L179"> },</span>
<span class="line" id="L180"> .windows => |win_ver| os.version_range.windows.max = win_ver,</span>
<span class="line" id="L181"> };</span>
<span class="line" id="L182"></span>
<span class="line" id="L183"> <span class="tok-kw">if</span> (cross_target.glibc_version) |glibc| {</span>
<span class="line" id="L184"> assert(cross_target.isGnuLibC());</span>
<span class="line" id="L185"> os.version_range.linux.glibc = glibc;</span>
<span class="line" id="L186"> }</span>
<span class="line" id="L187"></span>
<span class="line" id="L188"> <span class="tok-comment">// Until https://github.com/ziglang/zig/issues/4592 is implemented (support detecting the</span>
</span>
<span class="line" id="L189"> <span class="tok-comment">// native CPU architecture as being different than the current target), we use this:</span>
</span>
<span class="line" id="L190"> <span class="tok-kw">const</span> cpu_arch = cross_target.getCpuArch();</span>
<span class="line" id="L191"></span>
<span class="line" id="L192"> <span class="tok-kw">var</span> cpu = <span class="tok-kw">switch</span> (cross_target.cpu_model) {</span>
<span class="line" id="L193"> .native => detectNativeCpuAndFeatures(cpu_arch, os, cross_target),</span>
<span class="line" id="L194"> .baseline => Target.Cpu.baseline(cpu_arch),</span>
<span class="line" id="L195"> .determined_by_cpu_arch => <span class="tok-kw">if</span> (cross_target.cpu_arch == <span class="tok-null">null</span>)</span>
<span class="line" id="L196"> detectNativeCpuAndFeatures(cpu_arch, os, cross_target)</span>
<span class="line" id="L197"> <span class="tok-kw">else</span></span>
<span class="line" id="L198"> Target.Cpu.baseline(cpu_arch),</span>
<span class="line" id="L199"> .explicit => |model| model.toCpu(cpu_arch),</span>
<span class="line" id="L200"> } <span class="tok-kw">orelse</span> backup_cpu_detection: {</span>
<span class="line" id="L201"> <span class="tok-kw">break</span> :backup_cpu_detection Target.Cpu.baseline(cpu_arch);</span>
<span class="line" id="L202"> };</span>
<span class="line" id="L203"> <span class="tok-kw">var</span> result = <span class="tok-kw">try</span> detectAbiAndDynamicLinker(cpu, os, cross_target);</span>
<span class="line" id="L204"> <span class="tok-comment">// For x86, we need to populate some CPU feature flags depending on architecture</span>
</span>
<span class="line" id="L205"> <span class="tok-comment">// and mode:</span>
</span>
<span class="line" id="L206"> <span class="tok-comment">// * 16bit_mode => if the abi is code16</span>
</span>
<span class="line" id="L207"> <span class="tok-comment">// * 32bit_mode => if the arch is x86</span>
</span>
<span class="line" id="L208"> <span class="tok-comment">// However, the "mode" flags can be used as overrides, so if the user explicitly</span>
</span>
<span class="line" id="L209"> <span class="tok-comment">// sets one of them, that takes precedence.</span>
</span>
<span class="line" id="L210"> <span class="tok-kw">switch</span> (cpu_arch) {</span>
<span class="line" id="L211"> .x86 => {</span>
<span class="line" id="L212"> <span class="tok-kw">if</span> (!std.Target.x86.featureSetHasAny(cross_target.cpu_features_add, .{</span>
<span class="line" id="L213"> .@"16bit_mode", .@"32bit_mode",</span>
<span class="line" id="L214"> })) {</span>
<span class="line" id="L215"> <span class="tok-kw">switch</span> (result.target.abi) {</span>
<span class="line" id="L216"> .code16 => result.target.cpu.features.addFeature(</span>
<span class="line" id="L217"> <span class="tok-builtin">@intFromEnum</span>(std.Target.x86.Feature.@"16bit_mode"),</span>
<span class="line" id="L218"> ),</span>
<span class="line" id="L219"> <span class="tok-kw">else</span> => result.target.cpu.features.addFeature(</span>
<span class="line" id="L220"> <span class="tok-builtin">@intFromEnum</span>(std.Target.x86.Feature.@"32bit_mode"),</span>
<span class="line" id="L221"> ),</span>
<span class="line" id="L222"> }</span>
<span class="line" id="L223"> }</span>
<span class="line" id="L224"> },</span>
<span class="line" id="L225"> .arm, .armeb => {</span>
<span class="line" id="L226"> <span class="tok-comment">// XXX What do we do if the target has the noarm feature?</span>
</span>
<span class="line" id="L227"> <span class="tok-comment">// What do we do if the user specifies +thumb_mode?</span>
</span>
<span class="line" id="L228"> },</span>
<span class="line" id="L229"> .thumb, .thumbeb => {</span>
<span class="line" id="L230"> result.target.cpu.features.addFeature(</span>
<span class="line" id="L231"> <span class="tok-builtin">@intFromEnum</span>(std.Target.arm.Feature.thumb_mode),</span>
<span class="line" id="L232"> );</span>
<span class="line" id="L233"> },</span>
<span class="line" id="L234"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L235"> }</span>
<span class="line" id="L236"> cross_target.updateCpuFeatures(&result.target.cpu.features);</span>
<span class="line" id="L237"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L238">}</span>
<span class="line" id="L239"></span>
<span class="line" id="L240"><span class="tok-comment">/// In the past, this function attempted to use the executable's own binary if it was dynamically</span></span>
<span class="line" id="L241"><span class="tok-comment">/// linked to answer both the C ABI question and the dynamic linker question. However, this</span></span>
<span class="line" id="L242"><span class="tok-comment">/// could be problematic on a system that uses a RUNPATH for the compiler binary, locking</span></span>
<span class="line" id="L243"><span class="tok-comment">/// it to an older glibc version, while system binaries such as /usr/bin/env use a newer glibc</span></span>
<span class="line" id="L244"><span class="tok-comment">/// version. The problem is that libc.so.6 glibc version will match that of the system while</span></span>
<span class="line" id="L245"><span class="tok-comment">/// the dynamic linker will match that of the compiler binary. Executables with these versions</span></span>
<span class="line" id="L246"><span class="tok-comment">/// mismatching will fail to run.</span></span>
<span class="line" id="L247"><span class="tok-comment">///</span></span>
<span class="line" id="L248"><span class="tok-comment">/// Therefore, this function works the same regardless of whether the compiler binary is</span></span>
<span class="line" id="L249"><span class="tok-comment">/// dynamically or statically linked. It inspects `/usr/bin/env` as an ELF file to find the</span></span>
<span class="line" id="L250"><span class="tok-comment">/// answer to these questions, or if there is a shebang line, then it chases the referenced</span></span>
<span class="line" id="L251"><span class="tok-comment">/// file recursively. If that does not provide the answer, then the function falls back to</span></span>
<span class="line" id="L252"><span class="tok-comment">/// defaults.</span></span>
<span class="line" id="L253"><span class="tok-kw">fn</span> <span class="tok-fn">detectAbiAndDynamicLinker</span>(</span>
<span class="line" id="L254"> cpu: Target.Cpu,</span>
<span class="line" id="L255"> os: Target.Os,</span>
<span class="line" id="L256"> cross_target: CrossTarget,</span>
<span class="line" id="L257">) DetectError!NativeTargetInfo {</span>
<span class="line" id="L258"> <span class="tok-kw">const</span> native_target_has_ld = <span class="tok-kw">comptime</span> builtin.target.hasDynamicLinker();</span>
<span class="line" id="L259"> <span class="tok-kw">const</span> is_linux = builtin.target.os.tag == .linux;</span>
<span class="line" id="L260"> <span class="tok-kw">const</span> have_all_info = cross_target.dynamic_linker.get() != <span class="tok-null">null</span> <span class="tok-kw">and</span></span>
<span class="line" id="L261"> cross_target.abi != <span class="tok-null">null</span> <span class="tok-kw">and</span> (!is_linux <span class="tok-kw">or</span> cross_target.abi.?.isGnu());</span>
<span class="line" id="L262"> <span class="tok-kw">const</span> os_is_non_native = cross_target.os_tag != <span class="tok-null">null</span>;</span>
<span class="line" id="L263"> <span class="tok-kw">if</span> (!native_target_has_ld <span class="tok-kw">or</span> have_all_info <span class="tok-kw">or</span> os_is_non_native) {</span>
<span class="line" id="L264"> <span class="tok-kw">return</span> defaultAbiAndDynamicLinker(cpu, os, cross_target);</span>
<span class="line" id="L265"> }</span>
<span class="line" id="L266"> <span class="tok-kw">if</span> (cross_target.abi) |abi| {</span>
<span class="line" id="L267"> <span class="tok-kw">if</span> (abi.isMusl()) {</span>
<span class="line" id="L268"> <span class="tok-comment">// musl implies static linking.</span>
</span>
<span class="line" id="L269"> <span class="tok-kw">return</span> defaultAbiAndDynamicLinker(cpu, os, cross_target);</span>
<span class="line" id="L270"> }</span>
<span class="line" id="L271"> }</span>
<span class="line" id="L272"> <span class="tok-comment">// The current target's ABI cannot be relied on for this. For example, we may build the zig</span>
</span>
<span class="line" id="L273"> <span class="tok-comment">// compiler for target riscv64-linux-musl and provide a tarball for users to download.</span>
</span>
<span class="line" id="L274"> <span class="tok-comment">// A user could then run that zig compiler on riscv64-linux-gnu. This use case is well-defined</span>
</span>
<span class="line" id="L275"> <span class="tok-comment">// and supported by Zig. But that means that we must detect the system ABI here rather than</span>
</span>
<span class="line" id="L276"> <span class="tok-comment">// relying on `builtin.target`.</span>
</span>
<span class="line" id="L277"> <span class="tok-kw">const</span> all_abis = <span class="tok-kw">comptime</span> blk: {</span>
<span class="line" id="L278"> assert(<span class="tok-builtin">@intFromEnum</span>(Target.Abi.none) == <span class="tok-number">0</span>);</span>
<span class="line" id="L279"> <span class="tok-kw">const</span> fields = std.meta.fields(Target.Abi)[<span class="tok-number">1</span>..];</span>
<span class="line" id="L280"> <span class="tok-kw">var</span> array: [fields.len]Target.Abi = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L281"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (fields, <span class="tok-number">0</span>..) |field, i| {</span>
<span class="line" id="L282"> array[i] = <span class="tok-builtin">@field</span>(Target.Abi, field.name);</span>
<span class="line" id="L283"> }</span>
<span class="line" id="L284"> <span class="tok-kw">break</span> :blk array;</span>
<span class="line" id="L285"> };</span>
<span class="line" id="L286"> <span class="tok-kw">var</span> ld_info_list_buffer: [all_abis.len]LdInfo = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L287"> <span class="tok-kw">var</span> ld_info_list_len: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L288"> <span class="tok-kw">const</span> ofmt = cross_target.ofmt <span class="tok-kw">orelse</span> Target.ObjectFormat.default(os.tag, cpu.arch);</span>
<span class="line" id="L289"></span>
<span class="line" id="L290"> <span class="tok-kw">for</span> (all_abis) |abi| {</span>
<span class="line" id="L291"> <span class="tok-comment">// This may be a nonsensical parameter. We detect this with</span>
</span>
<span class="line" id="L292"> <span class="tok-comment">// error.UnknownDynamicLinkerPath and skip adding it to `ld_info_list`.</span>
</span>
<span class="line" id="L293"> <span class="tok-kw">const</span> target: Target = .{</span>
<span class="line" id="L294"> .cpu = cpu,</span>
<span class="line" id="L295"> .os = os,</span>
<span class="line" id="L296"> .abi = abi,</span>
<span class="line" id="L297"> .ofmt = ofmt,</span>
<span class="line" id="L298"> };</span>
<span class="line" id="L299"> <span class="tok-kw">const</span> ld = target.standardDynamicLinkerPath();</span>
<span class="line" id="L300"> <span class="tok-kw">if</span> (ld.get() == <span class="tok-null">null</span>) <span class="tok-kw">continue</span>;</span>
<span class="line" id="L301"></span>
<span class="line" id="L302"> ld_info_list_buffer[ld_info_list_len] = .{</span>
<span class="line" id="L303"> .ld = ld,</span>
<span class="line" id="L304"> .abi = abi,</span>
<span class="line" id="L305"> };</span>
<span class="line" id="L306"> ld_info_list_len += <span class="tok-number">1</span>;</span>
<span class="line" id="L307"> }</span>
<span class="line" id="L308"> <span class="tok-kw">const</span> ld_info_list = ld_info_list_buffer[<span class="tok-number">0</span>..ld_info_list_len];</span>
<span class="line" id="L309"></span>
<span class="line" id="L310"> <span class="tok-comment">// Best case scenario: the executable is dynamically linked, and we can iterate</span>
</span>
<span class="line" id="L311"> <span class="tok-comment">// over our own shared objects and find a dynamic linker.</span>
</span>
<span class="line" id="L312"> <span class="tok-kw">const</span> elf_file = blk: {</span>
<span class="line" id="L313"> <span class="tok-comment">// This block looks for a shebang line in /usr/bin/env,</span>
</span>
<span class="line" id="L314"> <span class="tok-comment">// if it finds one, then instead of using /usr/bin/env as the ELF file to examine, it uses the file it references instead,</span>
</span>
<span class="line" id="L315"> <span class="tok-comment">// doing the same logic recursively in case it finds another shebang line.</span>
</span>
<span class="line" id="L316"></span>
<span class="line" id="L317"> <span class="tok-comment">// Since /usr/bin/env is hard-coded into the shebang line of many portable scripts, it's a</span>
</span>
<span class="line" id="L318"> <span class="tok-comment">// reasonably reliable path to start with.</span>
</span>
<span class="line" id="L319"> <span class="tok-kw">var</span> file_name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span> = <span class="tok-str">"/usr/bin/env"</span>;</span>
<span class="line" id="L320"> <span class="tok-comment">// #! (2) + 255 (max length of shebang line since Linux 5.1) + \n (1)</span>
</span>
<span class="line" id="L321"> <span class="tok-kw">var</span> buffer: [<span class="tok-number">258</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L322"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L323"> <span class="tok-kw">const</span> file = fs.openFileAbsolute(file_name, .{}) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L324"> <span class="tok-kw">error</span>.NoSpaceLeft => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L325"> <span class="tok-kw">error</span>.NameTooLong => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L326"> <span class="tok-kw">error</span>.PathAlreadyExists => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L327"> <span class="tok-kw">error</span>.SharingViolation => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L328"> <span class="tok-kw">error</span>.InvalidUtf8 => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L329"> <span class="tok-kw">error</span>.BadPathName => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L330"> <span class="tok-kw">error</span>.PipeBusy => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L331"> <span class="tok-kw">error</span>.FileLocksNotSupported => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L332"> <span class="tok-kw">error</span>.WouldBlock => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L333"> <span class="tok-kw">error</span>.FileBusy => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// opened without write permissions</span>
</span>
<span class="line" id="L334"></span>
<span class="line" id="L335"> <span class="tok-kw">error</span>.IsDir,</span>
<span class="line" id="L336"> <span class="tok-kw">error</span>.NotDir,</span>
<span class="line" id="L337"> <span class="tok-kw">error</span>.InvalidHandle,</span>
<span class="line" id="L338"> <span class="tok-kw">error</span>.AccessDenied,</span>
<span class="line" id="L339"> <span class="tok-kw">error</span>.NoDevice,</span>
<span class="line" id="L340"> <span class="tok-kw">error</span>.FileNotFound,</span>
<span class="line" id="L341"> <span class="tok-kw">error</span>.FileTooBig,</span>
<span class="line" id="L342"> <span class="tok-kw">error</span>.Unexpected,</span>
<span class="line" id="L343"> => |e| {</span>
<span class="line" id="L344"> std.log.warn(<span class="tok-str">"Encountered error: {s}, falling back to default ABI and dynamic linker.\n"</span>, .{<span class="tok-builtin">@errorName</span>(e)});</span>
<span class="line" id="L345"> <span class="tok-kw">return</span> defaultAbiAndDynamicLinker(cpu, os, cross_target);</span>
<span class="line" id="L346"> },</span>
<span class="line" id="L347"></span>
<span class="line" id="L348"> <span class="tok-kw">else</span> => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L349"> };</span>
<span class="line" id="L350"> <span class="tok-kw">errdefer</span> file.close();</span>
<span class="line" id="L351"></span>
<span class="line" id="L352"> <span class="tok-kw">const</span> len = preadMin(file, &buffer, <span class="tok-number">0</span>, buffer.len) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L353"> <span class="tok-kw">error</span>.UnexpectedEndOfFile,</span>
<span class="line" id="L354"> <span class="tok-kw">error</span>.UnableToReadElfFile,</span>
<span class="line" id="L355"> => <span class="tok-kw">break</span> :blk file,</span>
<span class="line" id="L356"></span>
<span class="line" id="L357"> <span class="tok-kw">else</span> => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L358"> };</span>
<span class="line" id="L359"> <span class="tok-kw">const</span> newline = mem.indexOfScalar(<span class="tok-type">u8</span>, buffer[<span class="tok-number">0</span>..len], <span class="tok-str">'\n'</span>) <span class="tok-kw">orelse</span> <span class="tok-kw">break</span> :blk file;</span>
<span class="line" id="L360"> <span class="tok-kw">const</span> line = buffer[<span class="tok-number">0</span>..newline];</span>
<span class="line" id="L361"> <span class="tok-kw">if</span> (!mem.startsWith(<span class="tok-type">u8</span>, line, <span class="tok-str">"#!"</span>)) <span class="tok-kw">break</span> :blk file;</span>
<span class="line" id="L362"> <span class="tok-kw">var</span> it = mem.tokenizeScalar(<span class="tok-type">u8</span>, line[<span class="tok-number">2</span>..], <span class="tok-str">' '</span>);</span>
<span class="line" id="L363"> file_name = it.next() <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> defaultAbiAndDynamicLinker(cpu, os, cross_target);</span>
<span class="line" id="L364"> file.close();</span>
<span class="line" id="L365"> }</span>
<span class="line" id="L366"> };</span>
<span class="line" id="L367"> <span class="tok-kw">defer</span> elf_file.close();</span>
<span class="line" id="L368"></span>
<span class="line" id="L369"> <span class="tok-comment">// If Zig is statically linked, such as via distributed binary static builds, the above</span>
</span>
<span class="line" id="L370"> <span class="tok-comment">// trick (block self_exe) won't work. The next thing we fall back to is the same thing, but for elf_file.</span>
</span>
<span class="line" id="L371"> <span class="tok-comment">// TODO: inline this function and combine the buffer we already read above to find</span>
</span>
<span class="line" id="L372"> <span class="tok-comment">// the possible shebang line with the buffer we use for the ELF header.</span>
</span>
<span class="line" id="L373"> <span class="tok-kw">return</span> abiAndDynamicLinkerFromFile(elf_file, cpu, os, ld_info_list, cross_target) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L374"> <span class="tok-kw">error</span>.FileSystem,</span>
<span class="line" id="L375"> <span class="tok-kw">error</span>.SystemResources,</span>
<span class="line" id="L376"> <span class="tok-kw">error</span>.SymLinkLoop,</span>
<span class="line" id="L377"> <span class="tok-kw">error</span>.ProcessFdQuotaExceeded,</span>
<span class="line" id="L378"> <span class="tok-kw">error</span>.SystemFdQuotaExceeded,</span>
<span class="line" id="L379"> => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L380"></span>
<span class="line" id="L381"> <span class="tok-kw">error</span>.UnableToReadElfFile,</span>
<span class="line" id="L382"> <span class="tok-kw">error</span>.InvalidElfClass,</span>
<span class="line" id="L383"> <span class="tok-kw">error</span>.InvalidElfVersion,</span>
<span class="line" id="L384"> <span class="tok-kw">error</span>.InvalidElfEndian,</span>
<span class="line" id="L385"> <span class="tok-kw">error</span>.InvalidElfFile,</span>
<span class="line" id="L386"> <span class="tok-kw">error</span>.InvalidElfMagic,</span>
<span class="line" id="L387"> <span class="tok-kw">error</span>.Unexpected,</span>
<span class="line" id="L388"> <span class="tok-kw">error</span>.UnexpectedEndOfFile,</span>
<span class="line" id="L389"> <span class="tok-kw">error</span>.NameTooLong,</span>
<span class="line" id="L390"> <span class="tok-comment">// Finally, we fall back on the standard path.</span>
</span>
<span class="line" id="L391"> => |e| {</span>
<span class="line" id="L392"> std.log.warn(<span class="tok-str">"Encountered error: {s}, falling back to default ABI and dynamic linker.\n"</span>, .{<span class="tok-builtin">@errorName</span>(e)});</span>
<span class="line" id="L393"> <span class="tok-kw">return</span> defaultAbiAndDynamicLinker(cpu, os, cross_target);</span>
<span class="line" id="L394"> },</span>
<span class="line" id="L395"> };</span>
<span class="line" id="L396">}</span>
<span class="line" id="L397"></span>
<span class="line" id="L398"><span class="tok-kw">fn</span> <span class="tok-fn">glibcVerFromRPath</span>(rpath: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !std.SemanticVersion {</span>
<span class="line" id="L399"> <span class="tok-kw">var</span> dir = fs.cwd().openDir(rpath, .{}) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L400"> <span class="tok-kw">error</span>.NameTooLong => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L401"> <span class="tok-kw">error</span>.InvalidUtf8 => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L402"> <span class="tok-kw">error</span>.BadPathName => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L403"> <span class="tok-kw">error</span>.DeviceBusy => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L404"></span>
<span class="line" id="L405"> <span class="tok-kw">error</span>.FileNotFound,</span>
<span class="line" id="L406"> <span class="tok-kw">error</span>.NotDir,</span>
<span class="line" id="L407"> <span class="tok-kw">error</span>.InvalidHandle,</span>
<span class="line" id="L408"> <span class="tok-kw">error</span>.AccessDenied,</span>
<span class="line" id="L409"> <span class="tok-kw">error</span>.NoDevice,</span>
<span class="line" id="L410"> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.GLibCNotFound,</span>
<span class="line" id="L411"></span>
<span class="line" id="L412"> <span class="tok-kw">error</span>.ProcessFdQuotaExceeded,</span>
<span class="line" id="L413"> <span class="tok-kw">error</span>.SystemFdQuotaExceeded,</span>
<span class="line" id="L414"> <span class="tok-kw">error</span>.SystemResources,</span>
<span class="line" id="L415"> <span class="tok-kw">error</span>.SymLinkLoop,</span>
<span class="line" id="L416"> <span class="tok-kw">error</span>.Unexpected,</span>
<span class="line" id="L417"> => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L418"> };</span>
<span class="line" id="L419"> <span class="tok-kw">defer</span> dir.close();</span>
<span class="line" id="L420"></span>
<span class="line" id="L421"> <span class="tok-comment">// Now we have a candidate for the path to libc shared object. In</span>
</span>
<span class="line" id="L422"> <span class="tok-comment">// the past, we used readlink() here because the link name would</span>
</span>
<span class="line" id="L423"> <span class="tok-comment">// reveal the glibc version. However, in more recent GNU/Linux</span>
</span>
<span class="line" id="L424"> <span class="tok-comment">// installations, there is no symlink. Thus we instead use a more</span>
</span>
<span class="line" id="L425"> <span class="tok-comment">// robust check of opening the libc shared object and looking at the</span>
</span>
<span class="line" id="L426"> <span class="tok-comment">// .dynstr section, and finding the max version number of symbols</span>
</span>
<span class="line" id="L427"> <span class="tok-comment">// that start with "GLIBC_2.".</span>
</span>
<span class="line" id="L428"> <span class="tok-kw">const</span> glibc_so_basename = <span class="tok-str">"libc.so.6"</span>;</span>
<span class="line" id="L429"> <span class="tok-kw">var</span> f = dir.openFile(glibc_so_basename, .{}) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L430"> <span class="tok-kw">error</span>.NameTooLong => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L431"> <span class="tok-kw">error</span>.InvalidUtf8 => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// Windows only</span>
</span>
<span class="line" id="L432"> <span class="tok-kw">error</span>.BadPathName => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// Windows only</span>
</span>
<span class="line" id="L433"> <span class="tok-kw">error</span>.PipeBusy => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// Windows-only</span>
</span>
<span class="line" id="L434"> <span class="tok-kw">error</span>.SharingViolation => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// Windows-only</span>
</span>
<span class="line" id="L435"> <span class="tok-kw">error</span>.FileLocksNotSupported => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// No lock requested.</span>
</span>
<span class="line" id="L436"> <span class="tok-kw">error</span>.NoSpaceLeft => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// read-only</span>
</span>
<span class="line" id="L437"> <span class="tok-kw">error</span>.PathAlreadyExists => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// read-only</span>
</span>
<span class="line" id="L438"> <span class="tok-kw">error</span>.DeviceBusy => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// read-only</span>
</span>
<span class="line" id="L439"> <span class="tok-kw">error</span>.FileBusy => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// read-only</span>
</span>
<span class="line" id="L440"> <span class="tok-kw">error</span>.InvalidHandle => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// should not be in the error set</span>
</span>
<span class="line" id="L441"> <span class="tok-kw">error</span>.WouldBlock => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// not using O_NONBLOCK</span>
</span>
<span class="line" id="L442"> <span class="tok-kw">error</span>.NoDevice => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// not asking for a special device</span>
</span>
<span class="line" id="L443"></span>
<span class="line" id="L444"> <span class="tok-kw">error</span>.AccessDenied,</span>
<span class="line" id="L445"> <span class="tok-kw">error</span>.FileNotFound,</span>
<span class="line" id="L446"> <span class="tok-kw">error</span>.NotDir,</span>
<span class="line" id="L447"> <span class="tok-kw">error</span>.IsDir,</span>
<span class="line" id="L448"> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.GLibCNotFound,</span>
<span class="line" id="L449"></span>
<span class="line" id="L450"> <span class="tok-kw">error</span>.FileTooBig => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Unexpected,</span>
<span class="line" id="L451"></span>
<span class="line" id="L452"> <span class="tok-kw">error</span>.ProcessFdQuotaExceeded,</span>
<span class="line" id="L453"> <span class="tok-kw">error</span>.SystemFdQuotaExceeded,</span>
<span class="line" id="L454"> <span class="tok-kw">error</span>.SystemResources,</span>
<span class="line" id="L455"> <span class="tok-kw">error</span>.SymLinkLoop,</span>
<span class="line" id="L456"> <span class="tok-kw">error</span>.Unexpected,</span>
<span class="line" id="L457"> => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L458"> };</span>
<span class="line" id="L459"> <span class="tok-kw">defer</span> f.close();</span>
<span class="line" id="L460"></span>
<span class="line" id="L461"> <span class="tok-kw">return</span> glibcVerFromSoFile(f) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L462"> <span class="tok-kw">error</span>.InvalidElfMagic,</span>
<span class="line" id="L463"> <span class="tok-kw">error</span>.InvalidElfEndian,</span>
<span class="line" id="L464"> <span class="tok-kw">error</span>.InvalidElfClass,</span>
<span class="line" id="L465"> <span class="tok-kw">error</span>.InvalidElfFile,</span>
<span class="line" id="L466"> <span class="tok-kw">error</span>.InvalidElfVersion,</span>
<span class="line" id="L467"> <span class="tok-kw">error</span>.InvalidGnuLibCVersion,</span>
<span class="line" id="L468"> <span class="tok-kw">error</span>.UnexpectedEndOfFile,</span>
<span class="line" id="L469"> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.GLibCNotFound,</span>
<span class="line" id="L470"></span>
<span class="line" id="L471"> <span class="tok-kw">error</span>.SystemResources,</span>
<span class="line" id="L472"> <span class="tok-kw">error</span>.UnableToReadElfFile,</span>
<span class="line" id="L473"> <span class="tok-kw">error</span>.Unexpected,</span>
<span class="line" id="L474"> <span class="tok-kw">error</span>.FileSystem,</span>
<span class="line" id="L475"> => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L476"> };</span>
<span class="line" id="L477">}</span>
<span class="line" id="L478"></span>
<span class="line" id="L479"><span class="tok-kw">fn</span> <span class="tok-fn">glibcVerFromSoFile</span>(file: fs.File) !std.SemanticVersion {</span>
<span class="line" id="L480"> <span class="tok-kw">var</span> hdr_buf: [<span class="tok-builtin">@sizeOf</span>(elf.Elf64_Ehdr)]<span class="tok-type">u8</span> <span class="tok-kw">align</span>(<span class="tok-builtin">@alignOf</span>(elf.Elf64_Ehdr)) = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L481"> _ = <span class="tok-kw">try</span> preadMin(file, &hdr_buf, <span class="tok-number">0</span>, hdr_buf.len);</span>
<span class="line" id="L482"> <span class="tok-kw">const</span> hdr32 = <span class="tok-builtin">@as</span>(*elf.Elf32_Ehdr, <span class="tok-builtin">@ptrCast</span>(&hdr_buf));</span>
<span class="line" id="L483"> <span class="tok-kw">const</span> hdr64 = <span class="tok-builtin">@as</span>(*elf.Elf64_Ehdr, <span class="tok-builtin">@ptrCast</span>(&hdr_buf));</span>
<span class="line" id="L484"> <span class="tok-kw">if</span> (!mem.eql(<span class="tok-type">u8</span>, hdr32.e_ident[<span class="tok-number">0</span>..<span class="tok-number">4</span>], elf.MAGIC)) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidElfMagic;</span>
<span class="line" id="L485"> <span class="tok-kw">const</span> elf_endian: std.builtin.Endian = <span class="tok-kw">switch</span> (hdr32.e_ident[elf.EI_DATA]) {</span>
<span class="line" id="L486"> elf.ELFDATA2LSB => .Little,</span>
<span class="line" id="L487"> elf.ELFDATA2MSB => .Big,</span>
<span class="line" id="L488"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidElfEndian,</span>
<span class="line" id="L489"> };</span>
<span class="line" id="L490"> <span class="tok-kw">const</span> need_bswap = elf_endian != native_endian;</span>
<span class="line" id="L491"> <span class="tok-kw">if</span> (hdr32.e_ident[elf.EI_VERSION] != <span class="tok-number">1</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidElfVersion;</span>
<span class="line" id="L492"></span>
<span class="line" id="L493"> <span class="tok-kw">const</span> is_64 = <span class="tok-kw">switch</span> (hdr32.e_ident[elf.EI_CLASS]) {</span>
<span class="line" id="L494"> elf.ELFCLASS32 => <span class="tok-null">false</span>,</span>
<span class="line" id="L495"> elf.ELFCLASS64 => <span class="tok-null">true</span>,</span>
<span class="line" id="L496"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidElfClass,</span>
<span class="line" id="L497"> };</span>
<span class="line" id="L498"> <span class="tok-kw">const</span> shstrndx = elfInt(is_64, need_bswap, hdr32.e_shstrndx, hdr64.e_shstrndx);</span>
<span class="line" id="L499"> <span class="tok-kw">var</span> shoff = elfInt(is_64, need_bswap, hdr32.e_shoff, hdr64.e_shoff);</span>
<span class="line" id="L500"> <span class="tok-kw">const</span> shentsize = elfInt(is_64, need_bswap, hdr32.e_shentsize, hdr64.e_shentsize);</span>
<span class="line" id="L501"> <span class="tok-kw">const</span> str_section_off = shoff + <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, shentsize) * <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, shstrndx);</span>
<span class="line" id="L502"> <span class="tok-kw">var</span> sh_buf: [<span class="tok-number">16</span> * <span class="tok-builtin">@sizeOf</span>(elf.Elf64_Shdr)]<span class="tok-type">u8</span> <span class="tok-kw">align</span>(<span class="tok-builtin">@alignOf</span>(elf.Elf64_Shdr)) = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L503"> <span class="tok-kw">if</span> (sh_buf.len < shentsize) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidElfFile;</span>
<span class="line" id="L504"></span>
<span class="line" id="L505"> _ = <span class="tok-kw">try</span> preadMin(file, &sh_buf, str_section_off, shentsize);</span>
<span class="line" id="L506"> <span class="tok-kw">const</span> shstr32: *elf.Elf32_Shdr = <span class="tok-builtin">@ptrCast</span>(<span class="tok-builtin">@alignCast</span>(&sh_buf));</span>
<span class="line" id="L507"> <span class="tok-kw">const</span> shstr64: *elf.Elf64_Shdr = <span class="tok-builtin">@ptrCast</span>(<span class="tok-builtin">@alignCast</span>(&sh_buf));</span>
<span class="line" id="L508"> <span class="tok-kw">const</span> shstrtab_off = elfInt(is_64, need_bswap, shstr32.sh_offset, shstr64.sh_offset);</span>
<span class="line" id="L509"> <span class="tok-kw">const</span> shstrtab_size = elfInt(is_64, need_bswap, shstr32.sh_size, shstr64.sh_size);</span>
<span class="line" id="L510"> <span class="tok-kw">var</span> strtab_buf: [<span class="tok-number">4096</span>:<span class="tok-number">0</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L511"> <span class="tok-kw">const</span> shstrtab_len = <span class="tok-builtin">@min</span>(shstrtab_size, strtab_buf.len);</span>
<span class="line" id="L512"> <span class="tok-kw">const</span> shstrtab_read_len = <span class="tok-kw">try</span> preadMin(file, &strtab_buf, shstrtab_off, shstrtab_len);</span>
<span class="line" id="L513"> <span class="tok-kw">const</span> shstrtab = strtab_buf[<span class="tok-number">0</span>..shstrtab_read_len];</span>
<span class="line" id="L514"> <span class="tok-kw">const</span> shnum = elfInt(is_64, need_bswap, hdr32.e_shnum, hdr64.e_shnum);</span>
<span class="line" id="L515"> <span class="tok-kw">var</span> sh_i: <span class="tok-type">u16</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L516"> <span class="tok-kw">const</span> dynstr: <span class="tok-kw">struct</span> { offset: <span class="tok-type">u64</span>, size: <span class="tok-type">u64</span> } = find_dyn_str: <span class="tok-kw">while</span> (sh_i < shnum) {</span>
<span class="line" id="L517"> <span class="tok-comment">// Reserve some bytes so that we can deref the 64-bit struct fields</span>
</span>
<span class="line" id="L518"> <span class="tok-comment">// even when the ELF file is 32-bits.</span>
</span>
<span class="line" id="L519"> <span class="tok-kw">const</span> sh_reserve: <span class="tok-type">usize</span> = <span class="tok-builtin">@sizeOf</span>(elf.Elf64_Shdr) - <span class="tok-builtin">@sizeOf</span>(elf.Elf32_Shdr);</span>
<span class="line" id="L520"> <span class="tok-kw">const</span> sh_read_byte_len = <span class="tok-kw">try</span> preadMin(</span>
<span class="line" id="L521"> file,</span>
<span class="line" id="L522"> sh_buf[<span class="tok-number">0</span> .. sh_buf.len - sh_reserve],</span>
<span class="line" id="L523"> shoff,</span>
<span class="line" id="L524"> shentsize,</span>
<span class="line" id="L525"> );</span>
<span class="line" id="L526"> <span class="tok-kw">var</span> sh_buf_i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L527"> <span class="tok-kw">while</span> (sh_buf_i < sh_read_byte_len <span class="tok-kw">and</span> sh_i < shnum) : ({</span>
<span class="line" id="L528"> sh_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L529"> shoff += shentsize;</span>
<span class="line" id="L530"> sh_buf_i += shentsize;</span>
<span class="line" id="L531"> }) {</span>
<span class="line" id="L532"> <span class="tok-kw">const</span> sh32: *elf.Elf32_Shdr = <span class="tok-builtin">@ptrCast</span>(<span class="tok-builtin">@alignCast</span>(&sh_buf[sh_buf_i]));</span>
<span class="line" id="L533"> <span class="tok-kw">const</span> sh64: *elf.Elf64_Shdr = <span class="tok-builtin">@ptrCast</span>(<span class="tok-builtin">@alignCast</span>(&sh_buf[sh_buf_i]));</span>
<span class="line" id="L534"> <span class="tok-kw">const</span> sh_name_off = elfInt(is_64, need_bswap, sh32.sh_name, sh64.sh_name);</span>
<span class="line" id="L535"> <span class="tok-kw">const</span> sh_name = mem.sliceTo(shstrtab[sh_name_off..], <span class="tok-number">0</span>);</span>
<span class="line" id="L536"> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, sh_name, <span class="tok-str">".dynstr"</span>)) {</span>
<span class="line" id="L537"> <span class="tok-kw">break</span> :find_dyn_str .{</span>
<span class="line" id="L538"> .offset = elfInt(is_64, need_bswap, sh32.sh_offset, sh64.sh_offset),</span>
<span class="line" id="L539"> .size = elfInt(is_64, need_bswap, sh32.sh_size, sh64.sh_size),</span>
<span class="line" id="L540"> };</span>
<span class="line" id="L541"> }</span>
<span class="line" id="L542"> }</span>
<span class="line" id="L543"> } <span class="tok-kw">else</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidGnuLibCVersion;</span>
<span class="line" id="L544"></span>
<span class="line" id="L545"> <span class="tok-comment">// Here we loop over all the strings in the dynstr string table, assuming that any</span>
</span>
<span class="line" id="L546"> <span class="tok-comment">// strings that start with "GLIBC_2." indicate the existence of such a glibc version,</span>
</span>
<span class="line" id="L547"> <span class="tok-comment">// and furthermore, that the system-installed glibc is at minimum that version.</span>
</span>
<span class="line" id="L548"></span>
<span class="line" id="L549"> <span class="tok-comment">// Empirically, glibc 2.34 libc.so .dynstr section is 32441 bytes on my system.</span>
</span>
<span class="line" id="L550"> <span class="tok-comment">// Here I use double this value plus some headroom. This makes it only need</span>
</span>
<span class="line" id="L551"> <span class="tok-comment">// a single read syscall here.</span>
</span>
<span class="line" id="L552"> <span class="tok-kw">var</span> buf: [<span class="tok-number">80000</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L553"> <span class="tok-kw">if</span> (buf.len < dynstr.size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidGnuLibCVersion;</span>
<span class="line" id="L554"></span>
<span class="line" id="L555"> <span class="tok-kw">const</span> dynstr_size = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(dynstr.size));</span>
<span class="line" id="L556"> <span class="tok-kw">const</span> dynstr_bytes = buf[<span class="tok-number">0</span>..dynstr_size];</span>
<span class="line" id="L557"> _ = <span class="tok-kw">try</span> preadMin(file, dynstr_bytes, dynstr.offset, dynstr_bytes.len);</span>
<span class="line" id="L558"> <span class="tok-kw">var</span> it = mem.splitScalar(<span class="tok-type">u8</span>, dynstr_bytes, <span class="tok-number">0</span>);</span>
<span class="line" id="L559"> <span class="tok-kw">var</span> max_ver: std.SemanticVersion = .{ .major = <span class="tok-number">2</span>, .minor = <span class="tok-number">2</span>, .patch = <span class="tok-number">5</span> };</span>
<span class="line" id="L560"> <span class="tok-kw">while</span> (it.next()) |s| {</span>
<span class="line" id="L561"> <span class="tok-kw">if</span> (mem.startsWith(<span class="tok-type">u8</span>, s, <span class="tok-str">"GLIBC_2."</span>)) {</span>
<span class="line" id="L562"> <span class="tok-kw">const</span> chopped = s[<span class="tok-str">"GLIBC_"</span>.len..];</span>
<span class="line" id="L563"> <span class="tok-kw">const</span> ver = std.SemanticVersion.parse(chopped) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L564"> <span class="tok-kw">error</span>.Overflow => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidGnuLibCVersion,</span>
<span class="line" id="L565"> <span class="tok-kw">error</span>.InvalidVersion => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidGnuLibCVersion,</span>
<span class="line" id="L566"> };</span>
<span class="line" id="L567"> <span class="tok-kw">switch</span> (ver.order(max_ver)) {</span>
<span class="line" id="L568"> .gt => max_ver = ver,</span>
<span class="line" id="L569"> .lt, .eq => <span class="tok-kw">continue</span>,</span>
<span class="line" id="L570"> }</span>
<span class="line" id="L571"> }</span>
<span class="line" id="L572"> }</span>
<span class="line" id="L573"> <span class="tok-kw">return</span> max_ver;</span>
<span class="line" id="L574">}</span>
<span class="line" id="L575"></span>
<span class="line" id="L576"><span class="tok-kw">fn</span> <span class="tok-fn">glibcVerFromLinkName</span>(link_name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, prefix: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !std.SemanticVersion {</span>
<span class="line" id="L577"> <span class="tok-comment">// example: "libc-2.3.4.so"</span>
</span>
<span class="line" id="L578"> <span class="tok-comment">// example: "libc-2.27.so"</span>
</span>
<span class="line" id="L579"> <span class="tok-comment">// example: "ld-2.33.so"</span>
</span>
<span class="line" id="L580"> <span class="tok-kw">const</span> suffix = <span class="tok-str">".so"</span>;</span>
<span class="line" id="L581"> <span class="tok-kw">if</span> (!mem.startsWith(<span class="tok-type">u8</span>, link_name, prefix) <span class="tok-kw">or</span> !mem.endsWith(<span class="tok-type">u8</span>, link_name, suffix)) {</span>
<span class="line" id="L582"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnrecognizedGnuLibCFileName;</span>
<span class="line" id="L583"> }</span>
<span class="line" id="L584"> <span class="tok-comment">// chop off "libc-" and ".so"</span>
</span>
<span class="line" id="L585"> <span class="tok-kw">const</span> link_name_chopped = link_name[prefix.len .. link_name.len - suffix.len];</span>
<span class="line" id="L586"> <span class="tok-kw">return</span> std.SemanticVersion.parse(link_name_chopped) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L587"> <span class="tok-kw">error</span>.Overflow => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidGnuLibCVersion,</span>
<span class="line" id="L588"> <span class="tok-kw">error</span>.InvalidVersion => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidGnuLibCVersion,</span>
<span class="line" id="L589"> };</span>
<span class="line" id="L590">}</span>
<span class="line" id="L591"></span>
<span class="line" id="L592"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> AbiAndDynamicLinkerFromFileError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L593"> FileSystem,</span>
<span class="line" id="L594"> SystemResources,</span>
<span class="line" id="L595"> SymLinkLoop,</span>
<span class="line" id="L596"> ProcessFdQuotaExceeded,</span>
<span class="line" id="L597"> SystemFdQuotaExceeded,</span>
<span class="line" id="L598"> UnableToReadElfFile,</span>
<span class="line" id="L599"> InvalidElfClass,</span>
<span class="line" id="L600"> InvalidElfVersion,</span>
<span class="line" id="L601"> InvalidElfEndian,</span>
<span class="line" id="L602"> InvalidElfFile,</span>
<span class="line" id="L603"> InvalidElfMagic,</span>
<span class="line" id="L604"> Unexpected,</span>
<span class="line" id="L605"> UnexpectedEndOfFile,</span>
<span class="line" id="L606"> NameTooLong,</span>
<span class="line" id="L607">};</span>
<span class="line" id="L608"></span>
<span class="line" id="L609"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">abiAndDynamicLinkerFromFile</span>(</span>
<span class="line" id="L610"> file: fs.File,</span>
<span class="line" id="L611"> cpu: Target.Cpu,</span>
<span class="line" id="L612"> os: Target.Os,</span>
<span class="line" id="L613"> ld_info_list: []<span class="tok-kw">const</span> LdInfo,</span>
<span class="line" id="L614"> cross_target: CrossTarget,</span>
<span class="line" id="L615">) AbiAndDynamicLinkerFromFileError!NativeTargetInfo {</span>
<span class="line" id="L616"> <span class="tok-kw">var</span> hdr_buf: [<span class="tok-builtin">@sizeOf</span>(elf.Elf64_Ehdr)]<span class="tok-type">u8</span> <span class="tok-kw">align</span>(<span class="tok-builtin">@alignOf</span>(elf.Elf64_Ehdr)) = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L617"> _ = <span class="tok-kw">try</span> preadMin(file, &hdr_buf, <span class="tok-number">0</span>, hdr_buf.len);</span>
<span class="line" id="L618"> <span class="tok-kw">const</span> hdr32 = <span class="tok-builtin">@as</span>(*elf.Elf32_Ehdr, <span class="tok-builtin">@ptrCast</span>(&hdr_buf));</span>
<span class="line" id="L619"> <span class="tok-kw">const</span> hdr64 = <span class="tok-builtin">@as</span>(*elf.Elf64_Ehdr, <span class="tok-builtin">@ptrCast</span>(&hdr_buf));</span>
<span class="line" id="L620"> <span class="tok-kw">if</span> (!mem.eql(<span class="tok-type">u8</span>, hdr32.e_ident[<span class="tok-number">0</span>..<span class="tok-number">4</span>], elf.MAGIC)) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidElfMagic;</span>
<span class="line" id="L621"> <span class="tok-kw">const</span> elf_endian: std.builtin.Endian = <span class="tok-kw">switch</span> (hdr32.e_ident[elf.EI_DATA]) {</span>
<span class="line" id="L622"> elf.ELFDATA2LSB => .Little,</span>
<span class="line" id="L623"> elf.ELFDATA2MSB => .Big,</span>
<span class="line" id="L624"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidElfEndian,</span>
<span class="line" id="L625"> };</span>
<span class="line" id="L626"> <span class="tok-kw">const</span> need_bswap = elf_endian != native_endian;</span>
<span class="line" id="L627"> <span class="tok-kw">if</span> (hdr32.e_ident[elf.EI_VERSION] != <span class="tok-number">1</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidElfVersion;</span>
<span class="line" id="L628"></span>
<span class="line" id="L629"> <span class="tok-kw">const</span> is_64 = <span class="tok-kw">switch</span> (hdr32.e_ident[elf.EI_CLASS]) {</span>
<span class="line" id="L630"> elf.ELFCLASS32 => <span class="tok-null">false</span>,</span>
<span class="line" id="L631"> elf.ELFCLASS64 => <span class="tok-null">true</span>,</span>
<span class="line" id="L632"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidElfClass,</span>
<span class="line" id="L633"> };</span>
<span class="line" id="L634"> <span class="tok-kw">var</span> phoff = elfInt(is_64, need_bswap, hdr32.e_phoff, hdr64.e_phoff);</span>
<span class="line" id="L635"> <span class="tok-kw">const</span> phentsize = elfInt(is_64, need_bswap, hdr32.e_phentsize, hdr64.e_phentsize);</span>
<span class="line" id="L636"> <span class="tok-kw">const</span> phnum = elfInt(is_64, need_bswap, hdr32.e_phnum, hdr64.e_phnum);</span>
<span class="line" id="L637"></span>
<span class="line" id="L638"> <span class="tok-kw">var</span> result: NativeTargetInfo = .{</span>
<span class="line" id="L639"> .target = .{</span>
<span class="line" id="L640"> .cpu = cpu,</span>
<span class="line" id="L641"> .os = os,</span>
<span class="line" id="L642"> .abi = cross_target.abi <span class="tok-kw">orelse</span> Target.Abi.default(cpu.arch, os),</span>
<span class="line" id="L643"> .ofmt = cross_target.ofmt <span class="tok-kw">orelse</span> Target.ObjectFormat.default(os.tag, cpu.arch),</span>
<span class="line" id="L644"> },</span>
<span class="line" id="L645"> .dynamic_linker = cross_target.dynamic_linker,</span>
<span class="line" id="L646"> };</span>
<span class="line" id="L647"> <span class="tok-kw">var</span> rpath_offset: ?<span class="tok-type">u64</span> = <span class="tok-null">null</span>; <span class="tok-comment">// Found inside PT_DYNAMIC</span>
</span>
<span class="line" id="L648"> <span class="tok-kw">const</span> look_for_ld = cross_target.dynamic_linker.get() == <span class="tok-null">null</span>;</span>
<span class="line" id="L649"></span>
<span class="line" id="L650"> <span class="tok-kw">var</span> ph_buf: [<span class="tok-number">16</span> * <span class="tok-builtin">@sizeOf</span>(elf.Elf64_Phdr)]<span class="tok-type">u8</span> <span class="tok-kw">align</span>(<span class="tok-builtin">@alignOf</span>(elf.Elf64_Phdr)) = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L651"> <span class="tok-kw">if</span> (phentsize > <span class="tok-builtin">@sizeOf</span>(elf.Elf64_Phdr)) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidElfFile;</span>
<span class="line" id="L652"></span>
<span class="line" id="L653"> <span class="tok-kw">var</span> ph_i: <span class="tok-type">u16</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L654"> <span class="tok-kw">while</span> (ph_i < phnum) {</span>
<span class="line" id="L655"> <span class="tok-comment">// Reserve some bytes so that we can deref the 64-bit struct fields</span>
</span>
<span class="line" id="L656"> <span class="tok-comment">// even when the ELF file is 32-bits.</span>
</span>
<span class="line" id="L657"> <span class="tok-kw">const</span> ph_reserve: <span class="tok-type">usize</span> = <span class="tok-builtin">@sizeOf</span>(elf.Elf64_Phdr) - <span class="tok-builtin">@sizeOf</span>(elf.Elf32_Phdr);</span>
<span class="line" id="L658"> <span class="tok-kw">const</span> ph_read_byte_len = <span class="tok-kw">try</span> preadMin(file, ph_buf[<span class="tok-number">0</span> .. ph_buf.len - ph_reserve], phoff, phentsize);</span>
<span class="line" id="L659"> <span class="tok-kw">var</span> ph_buf_i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L660"> <span class="tok-kw">while</span> (ph_buf_i < ph_read_byte_len <span class="tok-kw">and</span> ph_i < phnum) : ({</span>
<span class="line" id="L661"> ph_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L662"> phoff += phentsize;</span>
<span class="line" id="L663"> ph_buf_i += phentsize;</span>
<span class="line" id="L664"> }) {</span>
<span class="line" id="L665"> <span class="tok-kw">const</span> ph32: *elf.Elf32_Phdr = <span class="tok-builtin">@ptrCast</span>(<span class="tok-builtin">@alignCast</span>(&ph_buf[ph_buf_i]));</span>
<span class="line" id="L666"> <span class="tok-kw">const</span> ph64: *elf.Elf64_Phdr = <span class="tok-builtin">@ptrCast</span>(<span class="tok-builtin">@alignCast</span>(&ph_buf[ph_buf_i]));</span>
<span class="line" id="L667"> <span class="tok-kw">const</span> p_type = elfInt(is_64, need_bswap, ph32.p_type, ph64.p_type);</span>
<span class="line" id="L668"> <span class="tok-kw">switch</span> (p_type) {</span>
<span class="line" id="L669"> elf.PT_INTERP => <span class="tok-kw">if</span> (look_for_ld) {</span>
<span class="line" id="L670"> <span class="tok-kw">const</span> p_offset = elfInt(is_64, need_bswap, ph32.p_offset, ph64.p_offset);</span>
<span class="line" id="L671"> <span class="tok-kw">const</span> p_filesz = elfInt(is_64, need_bswap, ph32.p_filesz, ph64.p_filesz);</span>
<span class="line" id="L672"> <span class="tok-kw">if</span> (p_filesz > result.dynamic_linker.buffer.len) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.NameTooLong;</span>
<span class="line" id="L673"> <span class="tok-kw">const</span> filesz = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(p_filesz));</span>
<span class="line" id="L674"> _ = <span class="tok-kw">try</span> preadMin(file, result.dynamic_linker.buffer[<span class="tok-number">0</span>..filesz], p_offset, filesz);</span>
<span class="line" id="L675"> <span class="tok-comment">// PT_INTERP includes a null byte in filesz.</span>
</span>
<span class="line" id="L676"> <span class="tok-kw">const</span> len = filesz - <span class="tok-number">1</span>;</span>
<span class="line" id="L677"> <span class="tok-comment">// dynamic_linker.max_byte is "max", not "len".</span>
</span>
<span class="line" id="L678"> <span class="tok-comment">// We know it will fit in u8 because we check against dynamic_linker.buffer.len above.</span>
</span>
<span class="line" id="L679"> result.dynamic_linker.max_byte = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(len - <span class="tok-number">1</span>));</span>
<span class="line" id="L680"></span>
<span class="line" id="L681"> <span class="tok-comment">// Use it to determine ABI.</span>
</span>
<span class="line" id="L682"> <span class="tok-kw">const</span> full_ld_path = result.dynamic_linker.buffer[<span class="tok-number">0</span>..len];</span>
<span class="line" id="L683"> <span class="tok-kw">for</span> (ld_info_list) |ld_info| {</span>
<span class="line" id="L684"> <span class="tok-kw">const</span> standard_ld_basename = fs.path.basename(ld_info.ld.get().?);</span>
<span class="line" id="L685"> <span class="tok-kw">if</span> (std.mem.endsWith(<span class="tok-type">u8</span>, full_ld_path, standard_ld_basename)) {</span>
<span class="line" id="L686"> result.target.abi = ld_info.abi;</span>
<span class="line" id="L687"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L688"> }</span>
<span class="line" id="L689"> }</span>
<span class="line" id="L690"> },</span>
<span class="line" id="L691"> <span class="tok-comment">// We only need this for detecting glibc version.</span>
</span>
<span class="line" id="L692"> elf.PT_DYNAMIC => <span class="tok-kw">if</span> (builtin.target.os.tag == .linux <span class="tok-kw">and</span> result.target.isGnuLibC() <span class="tok-kw">and</span></span>
<span class="line" id="L693"> cross_target.glibc_version == <span class="tok-null">null</span>)</span>
<span class="line" id="L694"> {</span>
<span class="line" id="L695"> <span class="tok-kw">var</span> dyn_off = elfInt(is_64, need_bswap, ph32.p_offset, ph64.p_offset);</span>
<span class="line" id="L696"> <span class="tok-kw">const</span> p_filesz = elfInt(is_64, need_bswap, ph32.p_filesz, ph64.p_filesz);</span>
<span class="line" id="L697"> <span class="tok-kw">const</span> dyn_size: <span class="tok-type">usize</span> = <span class="tok-kw">if</span> (is_64) <span class="tok-builtin">@sizeOf</span>(elf.Elf64_Dyn) <span class="tok-kw">else</span> <span class="tok-builtin">@sizeOf</span>(elf.Elf32_Dyn);</span>
<span class="line" id="L698"> <span class="tok-kw">const</span> dyn_num = p_filesz / dyn_size;</span>
<span class="line" id="L699"> <span class="tok-kw">var</span> dyn_buf: [<span class="tok-number">16</span> * <span class="tok-builtin">@sizeOf</span>(elf.Elf64_Dyn)]<span class="tok-type">u8</span> <span class="tok-kw">align</span>(<span class="tok-builtin">@alignOf</span>(elf.Elf64_Dyn)) = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L700"> <span class="tok-kw">var</span> dyn_i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L701"> dyn: <span class="tok-kw">while</span> (dyn_i < dyn_num) {</span>
<span class="line" id="L702"> <span class="tok-comment">// Reserve some bytes so that we can deref the 64-bit struct fields</span>
</span>
<span class="line" id="L703"> <span class="tok-comment">// even when the ELF file is 32-bits.</span>
</span>
<span class="line" id="L704"> <span class="tok-kw">const</span> dyn_reserve: <span class="tok-type">usize</span> = <span class="tok-builtin">@sizeOf</span>(elf.Elf64_Dyn) - <span class="tok-builtin">@sizeOf</span>(elf.Elf32_Dyn);</span>
<span class="line" id="L705"> <span class="tok-kw">const</span> dyn_read_byte_len = <span class="tok-kw">try</span> preadMin(</span>
<span class="line" id="L706"> file,</span>
<span class="line" id="L707"> dyn_buf[<span class="tok-number">0</span> .. dyn_buf.len - dyn_reserve],</span>
<span class="line" id="L708"> dyn_off,</span>
<span class="line" id="L709"> dyn_size,</span>
<span class="line" id="L710"> );</span>
<span class="line" id="L711"> <span class="tok-kw">var</span> dyn_buf_i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L712"> <span class="tok-kw">while</span> (dyn_buf_i < dyn_read_byte_len <span class="tok-kw">and</span> dyn_i < dyn_num) : ({</span>
<span class="line" id="L713"> dyn_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L714"> dyn_off += dyn_size;</span>
<span class="line" id="L715"> dyn_buf_i += dyn_size;</span>
<span class="line" id="L716"> }) {</span>
<span class="line" id="L717"> <span class="tok-kw">const</span> dyn32: *elf.Elf32_Dyn = <span class="tok-builtin">@ptrCast</span>(<span class="tok-builtin">@alignCast</span>(&dyn_buf[dyn_buf_i]));</span>
<span class="line" id="L718"> <span class="tok-kw">const</span> dyn64: *elf.Elf64_Dyn = <span class="tok-builtin">@ptrCast</span>(<span class="tok-builtin">@alignCast</span>(&dyn_buf[dyn_buf_i]));</span>
<span class="line" id="L719"> <span class="tok-kw">const</span> tag = elfInt(is_64, need_bswap, dyn32.d_tag, dyn64.d_tag);</span>
<span class="line" id="L720"> <span class="tok-kw">const</span> val = elfInt(is_64, need_bswap, dyn32.d_val, dyn64.d_val);</span>
<span class="line" id="L721"> <span class="tok-kw">if</span> (tag == elf.DT_RUNPATH) {</span>
<span class="line" id="L722"> rpath_offset = val;</span>
<span class="line" id="L723"> <span class="tok-kw">break</span> :dyn;</span>
<span class="line" id="L724"> }</span>
<span class="line" id="L725"> }</span>
<span class="line" id="L726"> }</span>
<span class="line" id="L727"> },</span>
<span class="line" id="L728"> <span class="tok-kw">else</span> => <span class="tok-kw">continue</span>,</span>
<span class="line" id="L729"> }</span>
<span class="line" id="L730"> }</span>
<span class="line" id="L731"> }</span>
<span class="line" id="L732"></span>
<span class="line" id="L733"> <span class="tok-kw">if</span> (builtin.target.os.tag == .linux <span class="tok-kw">and</span> result.target.isGnuLibC() <span class="tok-kw">and</span></span>
<span class="line" id="L734"> cross_target.glibc_version == <span class="tok-null">null</span>)</span>
<span class="line" id="L735"> {</span>
<span class="line" id="L736"> <span class="tok-kw">const</span> shstrndx = elfInt(is_64, need_bswap, hdr32.e_shstrndx, hdr64.e_shstrndx);</span>
<span class="line" id="L737"></span>
<span class="line" id="L738"> <span class="tok-kw">var</span> shoff = elfInt(is_64, need_bswap, hdr32.e_shoff, hdr64.e_shoff);</span>
<span class="line" id="L739"> <span class="tok-kw">const</span> shentsize = elfInt(is_64, need_bswap, hdr32.e_shentsize, hdr64.e_shentsize);</span>
<span class="line" id="L740"> <span class="tok-kw">const</span> str_section_off = shoff + <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, shentsize) * <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, shstrndx);</span>
<span class="line" id="L741"></span>
<span class="line" id="L742"> <span class="tok-kw">var</span> sh_buf: [<span class="tok-number">16</span> * <span class="tok-builtin">@sizeOf</span>(elf.Elf64_Shdr)]<span class="tok-type">u8</span> <span class="tok-kw">align</span>(<span class="tok-builtin">@alignOf</span>(elf.Elf64_Shdr)) = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L743"> <span class="tok-kw">if</span> (sh_buf.len < shentsize) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidElfFile;</span>
<span class="line" id="L744"></span>
<span class="line" id="L745"> _ = <span class="tok-kw">try</span> preadMin(file, &sh_buf, str_section_off, shentsize);</span>
<span class="line" id="L746"> <span class="tok-kw">const</span> shstr32: *elf.Elf32_Shdr = <span class="tok-builtin">@ptrCast</span>(<span class="tok-builtin">@alignCast</span>(&sh_buf));</span>
<span class="line" id="L747"> <span class="tok-kw">const</span> shstr64: *elf.Elf64_Shdr = <span class="tok-builtin">@ptrCast</span>(<span class="tok-builtin">@alignCast</span>(&sh_buf));</span>
<span class="line" id="L748"> <span class="tok-kw">const</span> shstrtab_off = elfInt(is_64, need_bswap, shstr32.sh_offset, shstr64.sh_offset);</span>
<span class="line" id="L749"> <span class="tok-kw">const</span> shstrtab_size = elfInt(is_64, need_bswap, shstr32.sh_size, shstr64.sh_size);</span>
<span class="line" id="L750"> <span class="tok-kw">var</span> strtab_buf: [<span class="tok-number">4096</span>:<span class="tok-number">0</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L751"> <span class="tok-kw">const</span> shstrtab_len = <span class="tok-builtin">@min</span>(shstrtab_size, strtab_buf.len);</span>
<span class="line" id="L752"> <span class="tok-kw">const</span> shstrtab_read_len = <span class="tok-kw">try</span> preadMin(file, &strtab_buf, shstrtab_off, shstrtab_len);</span>
<span class="line" id="L753"> <span class="tok-kw">const</span> shstrtab = strtab_buf[<span class="tok-number">0</span>..shstrtab_read_len];</span>
<span class="line" id="L754"></span>
<span class="line" id="L755"> <span class="tok-kw">const</span> shnum = elfInt(is_64, need_bswap, hdr32.e_shnum, hdr64.e_shnum);</span>
<span class="line" id="L756"> <span class="tok-kw">var</span> sh_i: <span class="tok-type">u16</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L757"> <span class="tok-kw">const</span> dynstr: ?<span class="tok-kw">struct</span> { offset: <span class="tok-type">u64</span>, size: <span class="tok-type">u64</span> } = find_dyn_str: <span class="tok-kw">while</span> (sh_i < shnum) {</span>
<span class="line" id="L758"> <span class="tok-comment">// Reserve some bytes so that we can deref the 64-bit struct fields</span>
</span>
<span class="line" id="L759"> <span class="tok-comment">// even when the ELF file is 32-bits.</span>
</span>
<span class="line" id="L760"> <span class="tok-kw">const</span> sh_reserve: <span class="tok-type">usize</span> = <span class="tok-builtin">@sizeOf</span>(elf.Elf64_Shdr) - <span class="tok-builtin">@sizeOf</span>(elf.Elf32_Shdr);</span>
<span class="line" id="L761"> <span class="tok-kw">const</span> sh_read_byte_len = <span class="tok-kw">try</span> preadMin(</span>
<span class="line" id="L762"> file,</span>
<span class="line" id="L763"> sh_buf[<span class="tok-number">0</span> .. sh_buf.len - sh_reserve],</span>
<span class="line" id="L764"> shoff,</span>
<span class="line" id="L765"> shentsize,</span>
<span class="line" id="L766"> );</span>
<span class="line" id="L767"> <span class="tok-kw">var</span> sh_buf_i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L768"> <span class="tok-kw">while</span> (sh_buf_i < sh_read_byte_len <span class="tok-kw">and</span> sh_i < shnum) : ({</span>
<span class="line" id="L769"> sh_i += <span class="tok-number">1</span>;</span>
<span class="line" id="L770"> shoff += shentsize;</span>
<span class="line" id="L771"> sh_buf_i += shentsize;</span>
<span class="line" id="L772"> }) {</span>
<span class="line" id="L773"> <span class="tok-kw">const</span> sh32: *elf.Elf32_Shdr = <span class="tok-builtin">@ptrCast</span>(<span class="tok-builtin">@alignCast</span>(&sh_buf[sh_buf_i]));</span>
<span class="line" id="L774"> <span class="tok-kw">const</span> sh64: *elf.Elf64_Shdr = <span class="tok-builtin">@ptrCast</span>(<span class="tok-builtin">@alignCast</span>(&sh_buf[sh_buf_i]));</span>
<span class="line" id="L775"> <span class="tok-kw">const</span> sh_name_off = elfInt(is_64, need_bswap, sh32.sh_name, sh64.sh_name);</span>
<span class="line" id="L776"> <span class="tok-kw">const</span> sh_name = mem.sliceTo(shstrtab[sh_name_off..], <span class="tok-number">0</span>);</span>
<span class="line" id="L777"> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, sh_name, <span class="tok-str">".dynstr"</span>)) {</span>
<span class="line" id="L778"> <span class="tok-kw">break</span> :find_dyn_str .{</span>
<span class="line" id="L779"> .offset = elfInt(is_64, need_bswap, sh32.sh_offset, sh64.sh_offset),</span>
<span class="line" id="L780"> .size = elfInt(is_64, need_bswap, sh32.sh_size, sh64.sh_size),</span>
<span class="line" id="L781"> };</span>
<span class="line" id="L782"> }</span>
<span class="line" id="L783"> }</span>
<span class="line" id="L784"> } <span class="tok-kw">else</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L785"></span>
<span class="line" id="L786"> <span class="tok-kw">if</span> (dynstr) |ds| {</span>
<span class="line" id="L787"> <span class="tok-kw">if</span> (rpath_offset) |rpoff| {</span>
<span class="line" id="L788"> <span class="tok-comment">// TODO this pointer cast should not be necessary</span>
</span>
<span class="line" id="L789"> <span class="tok-kw">const</span> rpoff_usize = std.math.cast(<span class="tok-type">usize</span>, rpoff) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidElfFile;</span>
<span class="line" id="L790"> <span class="tok-kw">if</span> (rpoff_usize > ds.size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidElfFile;</span>
<span class="line" id="L791"> <span class="tok-kw">const</span> rpoff_file = ds.offset + rpoff_usize;</span>
<span class="line" id="L792"> <span class="tok-kw">const</span> rp_max_size = ds.size - rpoff_usize;</span>
<span class="line" id="L793"></span>
<span class="line" id="L794"> <span class="tok-kw">const</span> strtab_len = <span class="tok-builtin">@min</span>(rp_max_size, strtab_buf.len);</span>
<span class="line" id="L795"> <span class="tok-kw">const</span> strtab_read_len = <span class="tok-kw">try</span> preadMin(file, &strtab_buf, rpoff_file, strtab_len);</span>
<span class="line" id="L796"> <span class="tok-kw">const</span> strtab = strtab_buf[<span class="tok-number">0</span>..strtab_read_len];</span>
<span class="line" id="L797"></span>
<span class="line" id="L798"> <span class="tok-kw">const</span> rpath_list = mem.sliceTo(strtab, <span class="tok-number">0</span>);</span>
<span class="line" id="L799"> <span class="tok-kw">var</span> it = mem.tokenizeScalar(<span class="tok-type">u8</span>, rpath_list, <span class="tok-str">':'</span>);</span>
<span class="line" id="L800"> <span class="tok-kw">while</span> (it.next()) |rpath| {</span>
<span class="line" id="L801"> <span class="tok-kw">if</span> (glibcVerFromRPath(rpath)) |ver| {</span>
<span class="line" id="L802"> result.target.os.version_range.linux.glibc = ver;</span>
<span class="line" id="L803"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L804"> } <span class="tok-kw">else</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L805"> <span class="tok-kw">error</span>.GLibCNotFound => <span class="tok-kw">continue</span>,</span>
<span class="line" id="L806"> <span class="tok-kw">else</span> => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L807"> }</span>
<span class="line" id="L808"> }</span>
<span class="line" id="L809"> }</span>
<span class="line" id="L810"> }</span>
<span class="line" id="L811"></span>
<span class="line" id="L812"> <span class="tok-kw">if</span> (result.dynamic_linker.get()) |dl_path| glibc_ver: {</span>
<span class="line" id="L813"> <span class="tok-comment">// There is no DT_RUNPATH so we try to find libc.so.6 inside the same</span>
</span>
<span class="line" id="L814"> <span class="tok-comment">// directory as the dynamic linker.</span>
</span>
<span class="line" id="L815"> <span class="tok-kw">if</span> (fs.path.dirname(dl_path)) |rpath| {</span>
<span class="line" id="L816"> <span class="tok-kw">if</span> (glibcVerFromRPath(rpath)) |ver| {</span>
<span class="line" id="L817"> result.target.os.version_range.linux.glibc = ver;</span>
<span class="line" id="L818"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L819"> } <span class="tok-kw">else</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L820"> <span class="tok-kw">error</span>.GLibCNotFound => {},</span>
<span class="line" id="L821"> <span class="tok-kw">else</span> => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L822"> }</span>
<span class="line" id="L823"> }</span>
<span class="line" id="L824"></span>
<span class="line" id="L825"> <span class="tok-comment">// So far, no luck. Next we try to see if the information is</span>
</span>
<span class="line" id="L826"> <span class="tok-comment">// present in the symlink data for the dynamic linker path.</span>
</span>
<span class="line" id="L827"> <span class="tok-kw">var</span> link_buf: [std.os.PATH_MAX]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L828"> <span class="tok-kw">const</span> link_name = std.os.readlink(dl_path, &link_buf) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L829"> <span class="tok-kw">error</span>.NameTooLong => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L830"> <span class="tok-kw">error</span>.InvalidUtf8 => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// Windows only</span>
</span>
<span class="line" id="L831"> <span class="tok-kw">error</span>.BadPathName => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// Windows only</span>
</span>
<span class="line" id="L832"> <span class="tok-kw">error</span>.UnsupportedReparsePointType => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// Windows only</span>
</span>
<span class="line" id="L833"></span>
<span class="line" id="L834"> <span class="tok-kw">error</span>.AccessDenied,</span>
<span class="line" id="L835"> <span class="tok-kw">error</span>.FileNotFound,</span>
<span class="line" id="L836"> <span class="tok-kw">error</span>.NotLink,</span>
<span class="line" id="L837"> <span class="tok-kw">error</span>.NotDir,</span>
<span class="line" id="L838"> => <span class="tok-kw">break</span> :glibc_ver,</span>
<span class="line" id="L839"></span>
<span class="line" id="L840"> <span class="tok-kw">error</span>.SystemResources,</span>
<span class="line" id="L841"> <span class="tok-kw">error</span>.FileSystem,</span>
<span class="line" id="L842"> <span class="tok-kw">error</span>.SymLinkLoop,</span>
<span class="line" id="L843"> <span class="tok-kw">error</span>.Unexpected,</span>
<span class="line" id="L844"> => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L845"> };</span>
<span class="line" id="L846"> result.target.os.version_range.linux.glibc = glibcVerFromLinkName(</span>
<span class="line" id="L847"> fs.path.basename(link_name),</span>
<span class="line" id="L848"> <span class="tok-str">"ld-"</span>,</span>
<span class="line" id="L849"> ) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L850"> <span class="tok-kw">error</span>.UnrecognizedGnuLibCFileName,</span>
<span class="line" id="L851"> <span class="tok-kw">error</span>.InvalidGnuLibCVersion,</span>
<span class="line" id="L852"> => <span class="tok-kw">break</span> :glibc_ver,</span>
<span class="line" id="L853"> };</span>
<span class="line" id="L854"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L855"> }</span>
<span class="line" id="L856"></span>
<span class="line" id="L857"> <span class="tok-comment">// Nothing worked so far. Finally we fall back to hard-coded search paths.</span>
</span>
<span class="line" id="L858"> <span class="tok-comment">// Some distros such as Debian keep their libc.so.6 in `/lib/$triple/`.</span>
</span>
<span class="line" id="L859"> <span class="tok-kw">var</span> path_buf: [std.os.PATH_MAX]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L860"> <span class="tok-kw">var</span> index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L861"> <span class="tok-kw">const</span> prefix = <span class="tok-str">"/lib/"</span>;</span>
<span class="line" id="L862"> <span class="tok-kw">const</span> cpu_arch = <span class="tok-builtin">@tagName</span>(result.target.cpu.arch);</span>
<span class="line" id="L863"> <span class="tok-kw">const</span> os_tag = <span class="tok-builtin">@tagName</span>(result.target.os.tag);</span>
<span class="line" id="L864"> <span class="tok-kw">const</span> abi = <span class="tok-builtin">@tagName</span>(result.target.abi);</span>
<span class="line" id="L865"> <span class="tok-builtin">@memcpy</span>(path_buf[index..][<span class="tok-number">0</span>..prefix.len], prefix);</span>
<span class="line" id="L866"> index += prefix.len;</span>
<span class="line" id="L867"> <span class="tok-builtin">@memcpy</span>(path_buf[index..][<span class="tok-number">0</span>..cpu_arch.len], cpu_arch);</span>
<span class="line" id="L868"> index += cpu_arch.len;</span>
<span class="line" id="L869"> path_buf[index] = <span class="tok-str">'-'</span>;</span>
<span class="line" id="L870"> index += <span class="tok-number">1</span>;</span>
<span class="line" id="L871"> <span class="tok-builtin">@memcpy</span>(path_buf[index..][<span class="tok-number">0</span>..os_tag.len], os_tag);</span>
<span class="line" id="L872"> index += os_tag.len;</span>
<span class="line" id="L873"> path_buf[index] = <span class="tok-str">'-'</span>;</span>
<span class="line" id="L874"> index += <span class="tok-number">1</span>;</span>
<span class="line" id="L875"> <span class="tok-builtin">@memcpy</span>(path_buf[index..][<span class="tok-number">0</span>..abi.len], abi);</span>
<span class="line" id="L876"> index += abi.len;</span>
<span class="line" id="L877"> <span class="tok-kw">const</span> rpath = path_buf[<span class="tok-number">0</span>..index];</span>
<span class="line" id="L878"> <span class="tok-kw">if</span> (glibcVerFromRPath(rpath)) |ver| {</span>
<span class="line" id="L879"> result.target.os.version_range.linux.glibc = ver;</span>
<span class="line" id="L880"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L881"> } <span class="tok-kw">else</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L882"> <span class="tok-kw">error</span>.GLibCNotFound => {},</span>
<span class="line" id="L883"> <span class="tok-kw">else</span> => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L884"> }</span>
<span class="line" id="L885"> }</span>
<span class="line" id="L886"></span>
<span class="line" id="L887"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L888">}</span>
<span class="line" id="L889"></span>
<span class="line" id="L890"><span class="tok-kw">fn</span> <span class="tok-fn">preadMin</span>(file: fs.File, buf: []<span class="tok-type">u8</span>, offset: <span class="tok-type">u64</span>, min_read_len: <span class="tok-type">usize</span>) !<span class="tok-type">usize</span> {</span>
<span class="line" id="L891"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L892"> <span class="tok-kw">while</span> (i < min_read_len) {</span>
<span class="line" id="L893"> <span class="tok-kw">const</span> len = file.pread(buf[i..], offset + i) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L894"> <span class="tok-kw">error</span>.OperationAborted => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// Windows-only</span>
</span>
<span class="line" id="L895"> <span class="tok-kw">error</span>.WouldBlock => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// Did not request blocking mode</span>
</span>
<span class="line" id="L896"> <span class="tok-kw">error</span>.NotOpenForReading => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L897"> <span class="tok-kw">error</span>.SystemResources => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SystemResources,</span>
<span class="line" id="L898"> <span class="tok-kw">error</span>.IsDir => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnableToReadElfFile,</span>
<span class="line" id="L899"> <span class="tok-kw">error</span>.BrokenPipe => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnableToReadElfFile,</span>
<span class="line" id="L900"> <span class="tok-kw">error</span>.Unseekable => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnableToReadElfFile,</span>
<span class="line" id="L901"> <span class="tok-kw">error</span>.ConnectionResetByPeer => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnableToReadElfFile,</span>
<span class="line" id="L902"> <span class="tok-kw">error</span>.ConnectionTimedOut => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnableToReadElfFile,</span>
<span class="line" id="L903"> <span class="tok-kw">error</span>.NetNameDeleted => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnableToReadElfFile,</span>
<span class="line" id="L904"> <span class="tok-kw">error</span>.Unexpected => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Unexpected,</span>
<span class="line" id="L905"> <span class="tok-kw">error</span>.InputOutput => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.FileSystem,</span>
<span class="line" id="L906"> <span class="tok-kw">error</span>.AccessDenied => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Unexpected,</span>
<span class="line" id="L907"> };</span>
<span class="line" id="L908"> <span class="tok-kw">if</span> (len == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnexpectedEndOfFile;</span>
<span class="line" id="L909"> i += len;</span>
<span class="line" id="L910"> }</span>
<span class="line" id="L911"> <span class="tok-kw">return</span> i;</span>
<span class="line" id="L912">}</span>
<span class="line" id="L913"></span>
<span class="line" id="L914"><span class="tok-kw">fn</span> <span class="tok-fn">defaultAbiAndDynamicLinker</span>(cpu: Target.Cpu, os: Target.Os, cross_target: CrossTarget) !NativeTargetInfo {</span>
<span class="line" id="L915"> <span class="tok-kw">const</span> target: Target = .{</span>
<span class="line" id="L916"> .cpu = cpu,</span>
<span class="line" id="L917"> .os = os,</span>
<span class="line" id="L918"> .abi = cross_target.abi <span class="tok-kw">orelse</span> Target.Abi.default(cpu.arch, os),</span>
<span class="line" id="L919"> .ofmt = cross_target.ofmt <span class="tok-kw">orelse</span> Target.ObjectFormat.default(os.tag, cpu.arch),</span>
<span class="line" id="L920"> };</span>
<span class="line" id="L921"> <span class="tok-kw">return</span> NativeTargetInfo{</span>
<span class="line" id="L922"> .target = target,</span>
<span class="line" id="L923"> .dynamic_linker = <span class="tok-kw">if</span> (cross_target.dynamic_linker.get() == <span class="tok-null">null</span>)</span>
<span class="line" id="L924"> target.standardDynamicLinkerPath()</span>
<span class="line" id="L925"> <span class="tok-kw">else</span></span>
<span class="line" id="L926"> cross_target.dynamic_linker,</span>
<span class="line" id="L927"> };</span>
<span class="line" id="L928">}</span>
<span class="line" id="L929"></span>
<span class="line" id="L930"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> LdInfo = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L931"> ld: DynamicLinker,</span>
<span class="line" id="L932"> abi: Target.Abi,</span>
<span class="line" id="L933">};</span>
<span class="line" id="L934"></span>
<span class="line" id="L935"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">elfInt</span>(is_64: <span class="tok-type">bool</span>, need_bswap: <span class="tok-type">bool</span>, int_32: <span class="tok-kw">anytype</span>, int_64: <span class="tok-kw">anytype</span>) <span class="tok-builtin">@TypeOf</span>(int_64) {</span>
<span class="line" id="L936"> <span class="tok-kw">if</span> (is_64) {</span>
<span class="line" id="L937"> <span class="tok-kw">if</span> (need_bswap) {</span>
<span class="line" id="L938"> <span class="tok-kw">return</span> <span class="tok-builtin">@byteSwap</span>(int_64);</span>
<span class="line" id="L939"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L940"> <span class="tok-kw">return</span> int_64;</span>
<span class="line" id="L941"> }</span>
<span class="line" id="L942"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L943"> <span class="tok-kw">if</span> (need_bswap) {</span>
<span class="line" id="L944"> <span class="tok-kw">return</span> <span class="tok-builtin">@byteSwap</span>(int_32);</span>
<span class="line" id="L945"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L946"> <span class="tok-kw">return</span> int_32;</span>
<span class="line" id="L947"> }</span>
<span class="line" id="L948"> }</span>
<span class="line" id="L949">}</span>
<span class="line" id="L950"></span>
<span class="line" id="L951"><span class="tok-kw">fn</span> <span class="tok-fn">detectNativeCpuAndFeatures</span>(cpu_arch: Target.Cpu.Arch, os: Target.Os, cross_target: CrossTarget) ?Target.Cpu {</span>
<span class="line" id="L952"> <span class="tok-comment">// Here we switch on a comptime value rather than `cpu_arch`. This is valid because `cpu_arch`,</span>
</span>
<span class="line" id="L953"> <span class="tok-comment">// although it is a runtime value, is guaranteed to be one of the architectures in the set</span>
</span>
<span class="line" id="L954"> <span class="tok-comment">// of the respective switch prong.</span>
</span>
<span class="line" id="L955"> <span class="tok-kw">switch</span> (builtin.cpu.arch) {</span>
<span class="line" id="L956"> .x86_64, .x86 => {</span>
<span class="line" id="L957"> <span class="tok-kw">return</span> <span class="tok-builtin">@import</span>(<span class="tok-str">"x86.zig"</span>).detectNativeCpuAndFeatures(cpu_arch, os, cross_target);</span>
<span class="line" id="L958"> },</span>
<span class="line" id="L959"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L960"> }</span>
<span class="line" id="L961"></span>
<span class="line" id="L962"> <span class="tok-kw">switch</span> (builtin.os.tag) {</span>
<span class="line" id="L963"> .linux => <span class="tok-kw">return</span> linux.detectNativeCpuAndFeatures(),</span>
<span class="line" id="L964"> .macos => <span class="tok-kw">return</span> darwin.macos.detectNativeCpuAndFeatures(),</span>
<span class="line" id="L965"> .windows => <span class="tok-kw">return</span> windows.detectNativeCpuAndFeatures(),</span>
<span class="line" id="L966"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L967"> }</span>
<span class="line" id="L968"></span>
<span class="line" id="L969"> <span class="tok-comment">// This architecture does not have CPU model & feature detection yet.</span>
</span>
<span class="line" id="L970"> <span class="tok-comment">// See https://github.com/ziglang/zig/issues/4591</span>
</span>
<span class="line" id="L971"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L972">}</span>
<span class="line" id="L973"></span>
<span class="line" id="L974"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Executor = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L975"> native,</span>
<span class="line" id="L976"> rosetta,</span>
<span class="line" id="L977"> qemu: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L978"> wine: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L979"> wasmtime: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L980"> darling: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L981"> bad_dl: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L982"> bad_os_or_cpu,</span>
<span class="line" id="L983">};</span>
<span class="line" id="L984"></span>
<span class="line" id="L985"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> GetExternalExecutorOptions = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L986"> allow_darling: <span class="tok-type">bool</span> = <span class="tok-null">true</span>,</span>
<span class="line" id="L987"> allow_qemu: <span class="tok-type">bool</span> = <span class="tok-null">true</span>,</span>
<span class="line" id="L988"> allow_rosetta: <span class="tok-type">bool</span> = <span class="tok-null">true</span>,</span>
<span class="line" id="L989"> allow_wasmtime: <span class="tok-type">bool</span> = <span class="tok-null">true</span>,</span>
<span class="line" id="L990"> allow_wine: <span class="tok-type">bool</span> = <span class="tok-null">true</span>,</span>
<span class="line" id="L991"> qemu_fixes_dl: <span class="tok-type">bool</span> = <span class="tok-null">false</span>,</span>
<span class="line" id="L992"> link_libc: <span class="tok-type">bool</span> = <span class="tok-null">false</span>,</span>
<span class="line" id="L993">};</span>
<span class="line" id="L994"></span>
<span class="line" id="L995"><span class="tok-comment">/// Return whether or not the given host target is capable of executing natively executables</span></span>
<span class="line" id="L996"><span class="tok-comment">/// of the other target.</span></span>
<span class="line" id="L997"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getExternalExecutor</span>(</span>
<span class="line" id="L998"> host: NativeTargetInfo,</span>
<span class="line" id="L999"> candidate: NativeTargetInfo,</span>
<span class="line" id="L1000"> options: GetExternalExecutorOptions,</span>
<span class="line" id="L1001">) Executor {</span>
<span class="line" id="L1002"> <span class="tok-kw">const</span> os_match = host.target.os.tag == candidate.target.os.tag;</span>
<span class="line" id="L1003"> <span class="tok-kw">const</span> cpu_ok = cpu_ok: {</span>
<span class="line" id="L1004"> <span class="tok-kw">if</span> (host.target.cpu.arch == candidate.target.cpu.arch)</span>
<span class="line" id="L1005"> <span class="tok-kw">break</span> :cpu_ok <span class="tok-null">true</span>;</span>
<span class="line" id="L1006"></span>
<span class="line" id="L1007"> <span class="tok-kw">if</span> (host.target.cpu.arch == .x86_64 <span class="tok-kw">and</span> candidate.target.cpu.arch == .x86)</span>
<span class="line" id="L1008"> <span class="tok-kw">break</span> :cpu_ok <span class="tok-null">true</span>;</span>
<span class="line" id="L1009"></span>
<span class="line" id="L1010"> <span class="tok-kw">if</span> (host.target.cpu.arch == .aarch64 <span class="tok-kw">and</span> candidate.target.cpu.arch == .arm)</span>
<span class="line" id="L1011"> <span class="tok-kw">break</span> :cpu_ok <span class="tok-null">true</span>;</span>
<span class="line" id="L1012"></span>
<span class="line" id="L1013"> <span class="tok-kw">if</span> (host.target.cpu.arch == .aarch64_be <span class="tok-kw">and</span> candidate.target.cpu.arch == .armeb)</span>
<span class="line" id="L1014"> <span class="tok-kw">break</span> :cpu_ok <span class="tok-null">true</span>;</span>
<span class="line" id="L1015"></span>
<span class="line" id="L1016"> <span class="tok-comment">// TODO additionally detect incompatible CPU features.</span>
</span>
<span class="line" id="L1017"> <span class="tok-comment">// Note that in some cases the OS kernel will emulate missing CPU features</span>
</span>
<span class="line" id="L1018"> <span class="tok-comment">// when an illegal instruction is encountered.</span>
</span>
<span class="line" id="L1019"></span>
<span class="line" id="L1020"> <span class="tok-kw">break</span> :cpu_ok <span class="tok-null">false</span>;</span>
<span class="line" id="L1021"> };</span>
<span class="line" id="L1022"></span>
<span class="line" id="L1023"> <span class="tok-kw">var</span> bad_result: Executor = .bad_os_or_cpu;</span>
<span class="line" id="L1024"></span>
<span class="line" id="L1025"> <span class="tok-kw">if</span> (os_match <span class="tok-kw">and</span> cpu_ok) native: {</span>
<span class="line" id="L1026"> <span class="tok-kw">if</span> (options.link_libc) {</span>
<span class="line" id="L1027"> <span class="tok-kw">if</span> (candidate.dynamic_linker.get()) |candidate_dl| {</span>
<span class="line" id="L1028"> fs.cwd().access(candidate_dl, .{}) <span class="tok-kw">catch</span> {</span>
<span class="line" id="L1029"> bad_result = .{ .bad_dl = candidate_dl };</span>
<span class="line" id="L1030"> <span class="tok-kw">break</span> :native;</span>
<span class="line" id="L1031"> };</span>
<span class="line" id="L1032"> }</span>
<span class="line" id="L1033"> }</span>
<span class="line" id="L1034"> <span class="tok-kw">return</span> .native;</span>
<span class="line" id="L1035"> }</span>
<span class="line" id="L1036"></span>
<span class="line" id="L1037"> <span class="tok-comment">// If the OS match and OS is macOS and CPU is arm64, we can use Rosetta 2</span>
</span>
<span class="line" id="L1038"> <span class="tok-comment">// to emulate the foreign architecture.</span>
</span>
<span class="line" id="L1039"> <span class="tok-kw">if</span> (options.allow_rosetta <span class="tok-kw">and</span> os_match <span class="tok-kw">and</span></span>
<span class="line" id="L1040"> host.target.os.tag == .macos <span class="tok-kw">and</span> host.target.cpu.arch == .aarch64)</span>
<span class="line" id="L1041"> {</span>
<span class="line" id="L1042"> <span class="tok-kw">switch</span> (candidate.target.cpu.arch) {</span>
<span class="line" id="L1043"> .x86_64 => <span class="tok-kw">return</span> .rosetta,</span>
<span class="line" id="L1044"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> bad_result,</span>
<span class="line" id="L1045"> }</span>
<span class="line" id="L1046"> }</span>
<span class="line" id="L1047"></span>
<span class="line" id="L1048"> <span class="tok-comment">// If the OS matches, we can use QEMU to emulate a foreign architecture.</span>
</span>
<span class="line" id="L1049"> <span class="tok-kw">if</span> (options.allow_qemu <span class="tok-kw">and</span> os_match <span class="tok-kw">and</span> (!cpu_ok <span class="tok-kw">or</span> options.qemu_fixes_dl)) {</span>
<span class="line" id="L1050"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (candidate.target.cpu.arch) {</span>
<span class="line" id="L1051"> .aarch64 => Executor{ .qemu = <span class="tok-str">"qemu-aarch64"</span> },</span>
<span class="line" id="L1052"> .aarch64_be => Executor{ .qemu = <span class="tok-str">"qemu-aarch64_be"</span> },</span>
<span class="line" id="L1053"> .arm => Executor{ .qemu = <span class="tok-str">"qemu-arm"</span> },</span>
<span class="line" id="L1054"> .armeb => Executor{ .qemu = <span class="tok-str">"qemu-armeb"</span> },</span>
<span class="line" id="L1055"> .hexagon => Executor{ .qemu = <span class="tok-str">"qemu-hexagon"</span> },</span>
<span class="line" id="L1056"> .x86 => Executor{ .qemu = <span class="tok-str">"qemu-i386"</span> },</span>
<span class="line" id="L1057"> .m68k => Executor{ .qemu = <span class="tok-str">"qemu-m68k"</span> },</span>
<span class="line" id="L1058"> .mips => Executor{ .qemu = <span class="tok-str">"qemu-mips"</span> },</span>
<span class="line" id="L1059"> .mipsel => Executor{ .qemu = <span class="tok-str">"qemu-mipsel"</span> },</span>
<span class="line" id="L1060"> .mips64 => Executor{ .qemu = <span class="tok-str">"qemu-mips64"</span> },</span>
<span class="line" id="L1061"> .mips64el => Executor{ .qemu = <span class="tok-str">"qemu-mips64el"</span> },</span>
<span class="line" id="L1062"> .powerpc => Executor{ .qemu = <span class="tok-str">"qemu-ppc"</span> },</span>
<span class="line" id="L1063"> .powerpc64 => Executor{ .qemu = <span class="tok-str">"qemu-ppc64"</span> },</span>
<span class="line" id="L1064"> .powerpc64le => Executor{ .qemu = <span class="tok-str">"qemu-ppc64le"</span> },</span>
<span class="line" id="L1065"> .riscv32 => Executor{ .qemu = <span class="tok-str">"qemu-riscv32"</span> },</span>
<span class="line" id="L1066"> .riscv64 => Executor{ .qemu = <span class="tok-str">"qemu-riscv64"</span> },</span>
<span class="line" id="L1067"> .s390x => Executor{ .qemu = <span class="tok-str">"qemu-s390x"</span> },</span>
<span class="line" id="L1068"> .sparc => Executor{ .qemu = <span class="tok-str">"qemu-sparc"</span> },</span>
<span class="line" id="L1069"> .sparc64 => Executor{ .qemu = <span class="tok-str">"qemu-sparc64"</span> },</span>
<span class="line" id="L1070"> .x86_64 => Executor{ .qemu = <span class="tok-str">"qemu-x86_64"</span> },</span>
<span class="line" id="L1071"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> bad_result,</span>
<span class="line" id="L1072"> };</span>
<span class="line" id="L1073"> }</span>
<span class="line" id="L1074"></span>
<span class="line" id="L1075"> <span class="tok-kw">switch</span> (candidate.target.os.tag) {</span>
<span class="line" id="L1076"> .windows => {</span>
<span class="line" id="L1077"> <span class="tok-kw">if</span> (options.allow_wine) {</span>
<span class="line" id="L1078"> <span class="tok-comment">// x86_64 wine does not support emulating aarch64-windows and</span>
</span>
<span class="line" id="L1079"> <span class="tok-comment">// vice versa.</span>
</span>
<span class="line" id="L1080"> <span class="tok-kw">if</span> (candidate.target.cpu.arch != builtin.cpu.arch) {</span>
<span class="line" id="L1081"> <span class="tok-kw">return</span> bad_result;</span>
<span class="line" id="L1082"> }</span>
<span class="line" id="L1083"> <span class="tok-kw">switch</span> (candidate.target.ptrBitWidth()) {</span>
<span class="line" id="L1084"> <span class="tok-number">32</span> => <span class="tok-kw">return</span> Executor{ .wine = <span class="tok-str">"wine"</span> },</span>
<span class="line" id="L1085"> <span class="tok-number">64</span> => <span class="tok-kw">return</span> Executor{ .wine = <span class="tok-str">"wine64"</span> },</span>
<span class="line" id="L1086"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> bad_result,</span>
<span class="line" id="L1087"> }</span>
<span class="line" id="L1088"> }</span>
<span class="line" id="L1089"> <span class="tok-kw">return</span> bad_result;</span>
<span class="line" id="L1090"> },</span>
<span class="line" id="L1091"> .wasi => {</span>
<span class="line" id="L1092"> <span class="tok-kw">if</span> (options.allow_wasmtime) {</span>
<span class="line" id="L1093"> <span class="tok-kw">switch</span> (candidate.target.ptrBitWidth()) {</span>
<span class="line" id="L1094"> <span class="tok-number">32</span> => <span class="tok-kw">return</span> Executor{ .wasmtime = <span class="tok-str">"wasmtime"</span> },</span>
<span class="line" id="L1095"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> bad_result,</span>
<span class="line" id="L1096"> }</span>
<span class="line" id="L1097"> }</span>
<span class="line" id="L1098"> <span class="tok-kw">return</span> bad_result;</span>
<span class="line" id="L1099"> },</span>
<span class="line" id="L1100"> .macos => {</span>
<span class="line" id="L1101"> <span class="tok-kw">if</span> (options.allow_darling) {</span>
<span class="line" id="L1102"> <span class="tok-comment">// This check can be loosened once darling adds a QEMU-based emulation</span>
</span>
<span class="line" id="L1103"> <span class="tok-comment">// layer for non-host architectures:</span>
</span>
<span class="line" id="L1104"> <span class="tok-comment">// https://github.com/darlinghq/darling/issues/863</span>
</span>
<span class="line" id="L1105"> <span class="tok-kw">if</span> (candidate.target.cpu.arch != builtin.cpu.arch) {</span>
<span class="line" id="L1106"> <span class="tok-kw">return</span> bad_result;</span>
<span class="line" id="L1107"> }</span>
<span class="line" id="L1108"> <span class="tok-kw">return</span> Executor{ .darling = <span class="tok-str">"darling"</span> };</span>
<span class="line" id="L1109"> }</span>
<span class="line" id="L1110"> <span class="tok-kw">return</span> bad_result;</span>
<span class="line" id="L1111"> },</span>
<span class="line" id="L1112"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> bad_result,</span>
<span class="line" id="L1113"> }</span>
<span class="line" id="L1114">}</span>
<span class="line" id="L1115"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> builtin = <span class="tok-builtin">@import</span>(<span class="tok-str">"builtin"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> os = std.os;</span>
<span class="line" id="L7"></span>
<span class="line" id="L8"><span class="tok-kw">const</span> Target = std.Target;</span>
<span class="line" id="L9"></span>
<span class="line" id="L10"><span class="tok-comment">/// Detect macOS version.</span></span>
<span class="line" id="L11"><span class="tok-comment">/// `target_os` is not modified in case of error.</span></span>
<span class="line" id="L12"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">detect</span>(target_os: *Target.Os) !<span class="tok-type">void</span> {</span>
<span class="line" id="L13"> <span class="tok-comment">// Drop use of osproductversion sysctl because:</span>
</span>
<span class="line" id="L14"> <span class="tok-comment">// 1. only available 10.13.4 High Sierra and later</span>
</span>
<span class="line" id="L15"> <span class="tok-comment">// 2. when used from a binary built against < SDK 11.0 it returns 10.16 and masks Big Sur 11.x version</span>
</span>
<span class="line" id="L16"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L17"> <span class="tok-comment">// NEW APPROACH, STEP 1, parse file:</span>
</span>
<span class="line" id="L18"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L19"> <span class="tok-comment">// /System/Library/CoreServices/SystemVersion.plist</span>
</span>
<span class="line" id="L20"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L21"> <span class="tok-comment">// NOTE: Historically `SystemVersion.plist` first appeared circa '2003</span>
</span>
<span class="line" id="L22"> <span class="tok-comment">// with the release of Mac OS X 10.3.0 Panther.</span>
</span>
<span class="line" id="L23"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L24"> <span class="tok-comment">// and if it contains a `10.16` value where the `16` is `>= 16` then it is non-canonical,</span>
</span>
<span class="line" id="L25"> <span class="tok-comment">// discarded, and we move on to next step. Otherwise we accept the version.</span>
</span>
<span class="line" id="L26"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L27"> <span class="tok-comment">// BACKGROUND: `10.(16+)` is not a proper version and does not have enough fidelity to</span>
</span>
<span class="line" id="L28"> <span class="tok-comment">// indicate minor/point version of Big Sur and later. It is a context-sensitive result</span>
</span>
<span class="line" id="L29"> <span class="tok-comment">// issued by the kernel for backwards compatibility purposes. Likely the kernel checks</span>
</span>
<span class="line" id="L30"> <span class="tok-comment">// if the executable was linked against an SDK older than Big Sur.</span>
</span>
<span class="line" id="L31"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L32"> <span class="tok-comment">// STEP 2, parse next file:</span>
</span>
<span class="line" id="L33"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L34"> <span class="tok-comment">// /System/Library/CoreServices/.SystemVersionPlatform.plist</span>
</span>
<span class="line" id="L35"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L36"> <span class="tok-comment">// NOTE: Historically `SystemVersionPlatform.plist` first appeared circa '2020</span>
</span>
<span class="line" id="L37"> <span class="tok-comment">// with the release of macOS 11.0 Big Sur.</span>
</span>
<span class="line" id="L38"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L39"> <span class="tok-comment">// Accessing the content via this path circumvents a context-sensitive result and</span>
</span>
<span class="line" id="L40"> <span class="tok-comment">// yields a canonical Big Sur version.</span>
</span>
<span class="line" id="L41"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L42"> <span class="tok-comment">// At this time there is no other known way for a < SDK 11.0 executable to obtain a</span>
</span>
<span class="line" id="L43"> <span class="tok-comment">// canonical Big Sur version.</span>
</span>
<span class="line" id="L44"> <span class="tok-comment">//</span>
</span>
<span class="line" id="L45"> <span class="tok-comment">// This implementation uses a reasonably simplified approach to parse .plist file</span>
</span>
<span class="line" id="L46"> <span class="tok-comment">// that while it is an xml document, we have good history on the file and its format</span>
</span>
<span class="line" id="L47"> <span class="tok-comment">// such that I am comfortable with implementing a minimalistic parser.</span>
</span>
<span class="line" id="L48"> <span class="tok-comment">// Things like string and general escapes are not supported.</span>
</span>
<span class="line" id="L49"> <span class="tok-kw">const</span> prefixSlash = <span class="tok-str">"/System/Library/CoreServices/"</span>;</span>
<span class="line" id="L50"> <span class="tok-kw">const</span> paths = [_][]<span class="tok-kw">const</span> <span class="tok-type">u8</span>{</span>
<span class="line" id="L51"> prefixSlash ++ <span class="tok-str">"SystemVersion.plist"</span>,</span>
<span class="line" id="L52"> prefixSlash ++ <span class="tok-str">".SystemVersionPlatform.plist"</span>,</span>
<span class="line" id="L53"> };</span>
<span class="line" id="L54"> <span class="tok-kw">for</span> (paths) |path| {</span>
<span class="line" id="L55"> <span class="tok-comment">// approx. 4 times historical file size</span>
</span>
<span class="line" id="L56"> <span class="tok-kw">var</span> buf: [<span class="tok-number">2048</span>]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L57"></span>
<span class="line" id="L58"> <span class="tok-kw">if</span> (std.fs.cwd().readFile(path, &buf)) |bytes| {</span>
<span class="line" id="L59"> <span class="tok-kw">if</span> (parseSystemVersion(bytes)) |ver| {</span>
<span class="line" id="L60"> <span class="tok-comment">// never return non-canonical `10.(16+)`</span>
</span>
<span class="line" id="L61"> <span class="tok-kw">if</span> (!(ver.major == <span class="tok-number">10</span> <span class="tok-kw">and</span> ver.minor >= <span class="tok-number">16</span>)) {</span>
<span class="line" id="L62"> target_os.version_range.semver.min = ver;</span>
<span class="line" id="L63"> target_os.version_range.semver.max = ver;</span>
<span class="line" id="L64"> <span class="tok-kw">return</span>;</span>
<span class="line" id="L65"> }</span>
<span class="line" id="L66"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L67"> } <span class="tok-kw">else</span> |_| {</span>
<span class="line" id="L68"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OSVersionDetectionFail;</span>
<span class="line" id="L69"> }</span>
<span class="line" id="L70"> } <span class="tok-kw">else</span> |_| {</span>
<span class="line" id="L71"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OSVersionDetectionFail;</span>
<span class="line" id="L72"> }</span>
<span class="line" id="L73"> }</span>
<span class="line" id="L74"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OSVersionDetectionFail;</span>
<span class="line" id="L75">}</span>
<span class="line" id="L76"></span>
<span class="line" id="L77"><span class="tok-kw">fn</span> <span class="tok-fn">parseSystemVersion</span>(buf: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !std.SemanticVersion {</span>
<span class="line" id="L78"> <span class="tok-kw">var</span> svt = SystemVersionTokenizer{ .bytes = buf };</span>
<span class="line" id="L79"> <span class="tok-kw">try</span> svt.skipUntilTag(.start, <span class="tok-str">"dict"</span>);</span>
<span class="line" id="L80"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L81"> <span class="tok-kw">try</span> svt.skipUntilTag(.start, <span class="tok-str">"key"</span>);</span>
<span class="line" id="L82"> <span class="tok-kw">const</span> content = <span class="tok-kw">try</span> svt.expectContent();</span>
<span class="line" id="L83"> <span class="tok-kw">try</span> svt.skipUntilTag(.end, <span class="tok-str">"key"</span>);</span>
<span class="line" id="L84"> <span class="tok-kw">if</span> (mem.eql(<span class="tok-type">u8</span>, content, <span class="tok-str">"ProductVersion"</span>)) <span class="tok-kw">break</span>;</span>
<span class="line" id="L85"> }</span>
<span class="line" id="L86"> <span class="tok-kw">try</span> svt.skipUntilTag(.start, <span class="tok-str">"string"</span>);</span>
<span class="line" id="L87"> <span class="tok-kw">const</span> ver = <span class="tok-kw">try</span> svt.expectContent();</span>
<span class="line" id="L88"> <span class="tok-kw">try</span> svt.skipUntilTag(.end, <span class="tok-str">"string"</span>);</span>
<span class="line" id="L89"></span>
<span class="line" id="L90"> <span class="tok-kw">const</span> parseVersionComponent = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L91"> <span class="tok-kw">fn</span> <span class="tok-fn">parseVersionComponent</span>(component: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">usize</span> {</span>
<span class="line" id="L92"> <span class="tok-kw">return</span> std.fmt.parseUnsigned(<span class="tok-type">usize</span>, component, <span class="tok-number">10</span>) <span class="tok-kw">catch</span> |err| {</span>
<span class="line" id="L93"> <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L94"> <span class="tok-kw">error</span>.InvalidCharacter => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidVersion,</span>
<span class="line" id="L95"> <span class="tok-kw">error</span>.Overflow => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Overflow,</span>
<span class="line" id="L96"> }</span>
<span class="line" id="L97"> };</span>
<span class="line" id="L98"> }</span>
<span class="line" id="L99"> }.parseVersionComponent;</span>
<span class="line" id="L100"> <span class="tok-kw">var</span> version_components = mem.split(<span class="tok-type">u8</span>, ver, <span class="tok-str">"."</span>);</span>
<span class="line" id="L101"> <span class="tok-kw">const</span> major = version_components.first();</span>
<span class="line" id="L102"> <span class="tok-kw">const</span> minor = version_components.next() <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidVersion;</span>
<span class="line" id="L103"> <span class="tok-kw">const</span> patch = version_components.next() <span class="tok-kw">orelse</span> <span class="tok-str">"0"</span>;</span>
<span class="line" id="L104"> <span class="tok-kw">if</span> (version_components.next() != <span class="tok-null">null</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidVersion;</span>
<span class="line" id="L105"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L106"> .major = <span class="tok-kw">try</span> parseVersionComponent(major),</span>
<span class="line" id="L107"> .minor = <span class="tok-kw">try</span> parseVersionComponent(minor),</span>
<span class="line" id="L108"> .patch = <span class="tok-kw">try</span> parseVersionComponent(patch),</span>
<span class="line" id="L109"> };</span>
<span class="line" id="L110">}</span>
<span class="line" id="L111"></span>
<span class="line" id="L112"><span class="tok-kw">const</span> SystemVersionTokenizer = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L113"> bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L114"> index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L115"> state: State = .begin,</span>
<span class="line" id="L116"></span>
<span class="line" id="L117"> <span class="tok-kw">fn</span> <span class="tok-fn">next</span>(self: *<span class="tok-builtin">@This</span>()) !?Token {</span>
<span class="line" id="L118"> <span class="tok-kw">var</span> mark: <span class="tok-type">usize</span> = self.index;</span>
<span class="line" id="L119"> <span class="tok-kw">var</span> tag = Tag{};</span>
<span class="line" id="L120"> <span class="tok-kw">var</span> content: []<span class="tok-kw">const</span> <span class="tok-type">u8</span> = <span class="tok-str">""</span>;</span>
<span class="line" id="L121"></span>
<span class="line" id="L122"> <span class="tok-kw">while</span> (self.index < self.bytes.len) {</span>
<span class="line" id="L123"> <span class="tok-kw">const</span> char = self.bytes[self.index];</span>
<span class="line" id="L124"> <span class="tok-kw">switch</span> (self.state) {</span>
<span class="line" id="L125"> .begin => <span class="tok-kw">switch</span> (char) {</span>
<span class="line" id="L126"> <span class="tok-str">'<'</span> => {</span>
<span class="line" id="L127"> self.state = .tag0;</span>
<span class="line" id="L128"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L129"> tag = Tag{};</span>
<span class="line" id="L130"> mark = self.index;</span>
<span class="line" id="L131"> },</span>
<span class="line" id="L132"> <span class="tok-str">'>'</span> => {</span>
<span class="line" id="L133"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BadToken;</span>
<span class="line" id="L134"> },</span>
<span class="line" id="L135"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L136"> self.state = .content;</span>
<span class="line" id="L137"> content = <span class="tok-str">""</span>;</span>
<span class="line" id="L138"> mark = self.index;</span>
<span class="line" id="L139"> },</span>
<span class="line" id="L140"> },</span>
<span class="line" id="L141"> .tag0 => <span class="tok-kw">switch</span> (char) {</span>
<span class="line" id="L142"> <span class="tok-str">'<'</span> => {</span>
<span class="line" id="L143"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BadToken;</span>
<span class="line" id="L144"> },</span>
<span class="line" id="L145"> <span class="tok-str">'>'</span> => {</span>
<span class="line" id="L146"> self.state = .begin;</span>
<span class="line" id="L147"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L148"> tag.name = self.bytes[mark..self.index];</span>
<span class="line" id="L149"> <span class="tok-kw">return</span> Token{ .tag = tag };</span>
<span class="line" id="L150"> },</span>
<span class="line" id="L151"> <span class="tok-str">'"'</span> => {</span>
<span class="line" id="L152"> self.state = .tag_string;</span>
<span class="line" id="L153"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L154"> },</span>
<span class="line" id="L155"> <span class="tok-str">'/'</span> => {</span>
<span class="line" id="L156"> self.state = .tag0_end_or_empty;</span>
<span class="line" id="L157"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L158"> },</span>
<span class="line" id="L159"> <span class="tok-str">'A'</span>...<span class="tok-str">'Z'</span>, <span class="tok-str">'a'</span>...<span class="tok-str">'z'</span> => {</span>
<span class="line" id="L160"> self.state = .tagN;</span>
<span class="line" id="L161"> tag.kind = .start;</span>
<span class="line" id="L162"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L163"> },</span>
<span class="line" id="L164"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L165"> self.state = .tagN;</span>
<span class="line" id="L166"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L167"> },</span>
<span class="line" id="L168"> },</span>
<span class="line" id="L169"> .tag0_end_or_empty => <span class="tok-kw">switch</span> (char) {</span>
<span class="line" id="L170"> <span class="tok-str">'<'</span> => {</span>
<span class="line" id="L171"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BadToken;</span>
<span class="line" id="L172"> },</span>
<span class="line" id="L173"> <span class="tok-str">'>'</span> => {</span>
<span class="line" id="L174"> self.state = .begin;</span>
<span class="line" id="L175"> tag.kind = .empty;</span>
<span class="line" id="L176"> tag.name = self.bytes[self.index..self.index];</span>
<span class="line" id="L177"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L178"> <span class="tok-kw">return</span> Token{ .tag = tag };</span>
<span class="line" id="L179"> },</span>
<span class="line" id="L180"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L181"> self.state = .tagN;</span>
<span class="line" id="L182"> tag.kind = .end;</span>
<span class="line" id="L183"> mark = self.index;</span>
<span class="line" id="L184"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L185"> },</span>
<span class="line" id="L186"> },</span>
<span class="line" id="L187"> .tagN => <span class="tok-kw">switch</span> (char) {</span>
<span class="line" id="L188"> <span class="tok-str">'<'</span> => {</span>
<span class="line" id="L189"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BadToken;</span>
<span class="line" id="L190"> },</span>
<span class="line" id="L191"> <span class="tok-str">'>'</span> => {</span>
<span class="line" id="L192"> self.state = .begin;</span>
<span class="line" id="L193"> tag.name = self.bytes[mark..self.index];</span>
<span class="line" id="L194"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L195"> <span class="tok-kw">return</span> Token{ .tag = tag };</span>
<span class="line" id="L196"> },</span>
<span class="line" id="L197"> <span class="tok-str">'"'</span> => {</span>
<span class="line" id="L198"> self.state = .tag_string;</span>
<span class="line" id="L199"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L200"> },</span>
<span class="line" id="L201"> <span class="tok-str">'/'</span> => {</span>
<span class="line" id="L202"> self.state = .tagN_end;</span>
<span class="line" id="L203"> tag.kind = .end;</span>
<span class="line" id="L204"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L205"> },</span>
<span class="line" id="L206"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L207"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L208"> },</span>
<span class="line" id="L209"> },</span>
<span class="line" id="L210"> .tagN_end => <span class="tok-kw">switch</span> (char) {</span>
<span class="line" id="L211"> <span class="tok-str">'>'</span> => {</span>
<span class="line" id="L212"> self.state = .begin;</span>
<span class="line" id="L213"> tag.name = self.bytes[mark..self.index];</span>
<span class="line" id="L214"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L215"> <span class="tok-kw">return</span> Token{ .tag = tag };</span>
<span class="line" id="L216"> },</span>
<span class="line" id="L217"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L218"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BadToken;</span>
<span class="line" id="L219"> },</span>
<span class="line" id="L220"> },</span>
<span class="line" id="L221"> .tag_string => <span class="tok-kw">switch</span> (char) {</span>
<span class="line" id="L222"> <span class="tok-str">'"'</span> => {</span>
<span class="line" id="L223"> self.state = .tagN;</span>
<span class="line" id="L224"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L225"> },</span>
<span class="line" id="L226"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L227"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L228"> },</span>
<span class="line" id="L229"> },</span>
<span class="line" id="L230"> .content => <span class="tok-kw">switch</span> (char) {</span>
<span class="line" id="L231"> <span class="tok-str">'<'</span> => {</span>
<span class="line" id="L232"> self.state = .tag0;</span>
<span class="line" id="L233"> content = self.bytes[mark..self.index];</span>
<span class="line" id="L234"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L235"> tag = Tag{};</span>
<span class="line" id="L236"> mark = self.index;</span>
<span class="line" id="L237"> <span class="tok-kw">return</span> Token{ .content = content };</span>
<span class="line" id="L238"> },</span>
<span class="line" id="L239"> <span class="tok-str">'>'</span> => {</span>
<span class="line" id="L240"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BadToken;</span>
<span class="line" id="L241"> },</span>
<span class="line" id="L242"> <span class="tok-kw">else</span> => {</span>
<span class="line" id="L243"> self.index += <span class="tok-number">1</span>;</span>
<span class="line" id="L244"> },</span>
<span class="line" id="L245"> },</span>
<span class="line" id="L246"> }</span>
<span class="line" id="L247"> }</span>
<span class="line" id="L248"></span>
<span class="line" id="L249"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L250"> }</span>
<span class="line" id="L251"></span>
<span class="line" id="L252"> <span class="tok-kw">fn</span> <span class="tok-fn">expectContent</span>(self: *<span class="tok-builtin">@This</span>()) ![]<span class="tok-kw">const</span> <span class="tok-type">u8</span> {</span>
<span class="line" id="L253"> <span class="tok-kw">if</span> (<span class="tok-kw">try</span> self.next()) |tok| {</span>
<span class="line" id="L254"> <span class="tok-kw">switch</span> (tok) {</span>
<span class="line" id="L255"> .content => |content| {</span>
<span class="line" id="L256"> <span class="tok-kw">return</span> content;</span>
<span class="line" id="L257"> },</span>
<span class="line" id="L258"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L259"> }</span>
<span class="line" id="L260"> }</span>
<span class="line" id="L261"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnexpectedToken;</span>
<span class="line" id="L262"> }</span>
<span class="line" id="L263"></span>
<span class="line" id="L264"> <span class="tok-kw">fn</span> <span class="tok-fn">skipUntilTag</span>(self: *<span class="tok-builtin">@This</span>(), kind: Tag.Kind, name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L265"> <span class="tok-kw">while</span> (<span class="tok-kw">try</span> self.next()) |tok| {</span>
<span class="line" id="L266"> <span class="tok-kw">switch</span> (tok) {</span>
<span class="line" id="L267"> .tag => |tag| {</span>
<span class="line" id="L268"> <span class="tok-kw">if</span> (tag.kind == kind <span class="tok-kw">and</span> mem.eql(<span class="tok-type">u8</span>, tag.name, name)) <span class="tok-kw">return</span>;</span>
<span class="line" id="L269"> },</span>
<span class="line" id="L270"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L271"> }</span>
<span class="line" id="L272"> }</span>
<span class="line" id="L273"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.TagNotFound;</span>
<span class="line" id="L274"> }</span>
<span class="line" id="L275"></span>
<span class="line" id="L276"> <span class="tok-kw">const</span> State = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L277"> begin,</span>
<span class="line" id="L278"> tag0,</span>
<span class="line" id="L279"> tag0_end_or_empty,</span>
<span class="line" id="L280"> tagN,</span>
<span class="line" id="L281"> tagN_end,</span>
<span class="line" id="L282"> tag_string,</span>
<span class="line" id="L283"> content,</span>
<span class="line" id="L284"> };</span>
<span class="line" id="L285"></span>
<span class="line" id="L286"> <span class="tok-kw">const</span> Token = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L287"> tag: Tag,</span>
<span class="line" id="L288"> content: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L289"> };</span>
<span class="line" id="L290"></span>
<span class="line" id="L291"> <span class="tok-kw">const</span> Tag = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L292"> kind: Kind = .unknown,</span>
<span class="line" id="L293"> name: []<span class="tok-kw">const</span> <span class="tok-type">u8</span> = <span class="tok-str">""</span>,</span>
<span class="line" id="L294"></span>
<span class="line" id="L295"> <span class="tok-kw">const</span> Kind = <span class="tok-kw">enum</span> { unknown, start, end, empty };</span>
<span class="line" id="L296"> };</span>
<span class="line" id="L297">};</span>
<span class="line" id="L298"></span>
<span class="line" id="L299"><span class="tok-kw">test</span> <span class="tok-str">"detect"</span> {</span>
<span class="line" id="L300"> <span class="tok-kw">const</span> cases = .{</span>
<span class="line" id="L301"> .{</span>
<span class="line" id="L302"> <span class="tok-str">\\<?xml version="1.0" encoding="UTF-8"?></span></span>
<span class="line" id="L303"> <span class="tok-str">\\<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"></span></span>
<span class="line" id="L304"> <span class="tok-str">\\<plist version="1.0"></span></span>
<span class="line" id="L305"> <span class="tok-str">\\<dict></span></span>
<span class="line" id="L306"> <span class="tok-str">\\ <key>ProductBuildVersion</key></span></span>
<span class="line" id="L307"> <span class="tok-str">\\ <string>7B85</string></span></span>
<span class="line" id="L308"> <span class="tok-str">\\ <key>ProductCopyright</key></span></span>
<span class="line" id="L309"> <span class="tok-str">\\ <string>Apple Computer, Inc. 1983-2003</string></span></span>
<span class="line" id="L310"> <span class="tok-str">\\ <key>ProductName</key></span></span>
<span class="line" id="L311"> <span class="tok-str">\\ <string>Mac OS X</string></span></span>
<span class="line" id="L312"> <span class="tok-str">\\ <key>ProductUserVisibleVersion</key></span></span>
<span class="line" id="L313"> <span class="tok-str">\\ <string>10.3</string></span></span>
<span class="line" id="L314"> <span class="tok-str">\\ <key>ProductVersion</key></span></span>
<span class="line" id="L315"> <span class="tok-str">\\ <string>10.3</string></span></span>
<span class="line" id="L316"> <span class="tok-str">\\</dict></span></span>
<span class="line" id="L317"> <span class="tok-str">\\</plist></span></span>
<span class="line" id="L318"> ,</span>
<span class="line" id="L319"> .{ .major = <span class="tok-number">10</span>, .minor = <span class="tok-number">3</span>, .patch = <span class="tok-number">0</span> },</span>
<span class="line" id="L320"> },</span>
<span class="line" id="L321"> .{</span>
<span class="line" id="L322"> <span class="tok-str">\\<?xml version="1.0" encoding="UTF-8"?></span></span>
<span class="line" id="L323"> <span class="tok-str">\\<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"></span></span>
<span class="line" id="L324"> <span class="tok-str">\\<plist version="1.0"></span></span>
<span class="line" id="L325"> <span class="tok-str">\\<dict></span></span>
<span class="line" id="L326"> <span class="tok-str">\\ <key>ProductBuildVersion</key></span></span>
<span class="line" id="L327"> <span class="tok-str">\\ <string>7W98</string></span></span>
<span class="line" id="L328"> <span class="tok-str">\\ <key>ProductCopyright</key></span></span>
<span class="line" id="L329"> <span class="tok-str">\\ <string>Apple Computer, Inc. 1983-2004</string></span></span>
<span class="line" id="L330"> <span class="tok-str">\\ <key>ProductName</key></span></span>
<span class="line" id="L331"> <span class="tok-str">\\ <string>Mac OS X</string></span></span>
<span class="line" id="L332"> <span class="tok-str">\\ <key>ProductUserVisibleVersion</key></span></span>
<span class="line" id="L333"> <span class="tok-str">\\ <string>10.3.9</string></span></span>
<span class="line" id="L334"> <span class="tok-str">\\ <key>ProductVersion</key></span></span>
<span class="line" id="L335"> <span class="tok-str">\\ <string>10.3.9</string></span></span>
<span class="line" id="L336"> <span class="tok-str">\\</dict></span></span>
<span class="line" id="L337"> <span class="tok-str">\\</plist></span></span>
<span class="line" id="L338"> ,</span>
<span class="line" id="L339"> .{ .major = <span class="tok-number">10</span>, .minor = <span class="tok-number">3</span>, .patch = <span class="tok-number">9</span> },</span>
<span class="line" id="L340"> },</span>
<span class="line" id="L341"> .{</span>
<span class="line" id="L342"> <span class="tok-str">\\<?xml version="1.0" encoding="UTF-8"?></span></span>
<span class="line" id="L343"> <span class="tok-str">\\<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"></span></span>
<span class="line" id="L344"> <span class="tok-str">\\<plist version="1.0"></span></span>
<span class="line" id="L345"> <span class="tok-str">\\<dict></span></span>
<span class="line" id="L346"> <span class="tok-str">\\ <key>ProductBuildVersion</key></span></span>
<span class="line" id="L347"> <span class="tok-str">\\ <string>19G68</string></span></span>
<span class="line" id="L348"> <span class="tok-str">\\ <key>ProductCopyright</key></span></span>
<span class="line" id="L349"> <span class="tok-str">\\ <string>1983-2020 Apple Inc.</string></span></span>
<span class="line" id="L350"> <span class="tok-str">\\ <key>ProductName</key></span></span>
<span class="line" id="L351"> <span class="tok-str">\\ <string>Mac OS X</string></span></span>
<span class="line" id="L352"> <span class="tok-str">\\ <key>ProductUserVisibleVersion</key></span></span>
<span class="line" id="L353"> <span class="tok-str">\\ <string>10.15.6</string></span></span>
<span class="line" id="L354"> <span class="tok-str">\\ <key>ProductVersion</key></span></span>
<span class="line" id="L355"> <span class="tok-str">\\ <string>10.15.6</string></span></span>
<span class="line" id="L356"> <span class="tok-str">\\ <key>iOSSupportVersion</key></span></span>
<span class="line" id="L357"> <span class="tok-str">\\ <string>13.6</string></span></span>
<span class="line" id="L358"> <span class="tok-str">\\</dict></span></span>
<span class="line" id="L359"> <span class="tok-str">\\</plist></span></span>
<span class="line" id="L360"> ,</span>
<span class="line" id="L361"> .{ .major = <span class="tok-number">10</span>, .minor = <span class="tok-number">15</span>, .patch = <span class="tok-number">6</span> },</span>
<span class="line" id="L362"> },</span>
<span class="line" id="L363"> .{</span>
<span class="line" id="L364"> <span class="tok-str">\\<?xml version="1.0" encoding="UTF-8"?></span></span>
<span class="line" id="L365"> <span class="tok-str">\\<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"></span></span>
<span class="line" id="L366"> <span class="tok-str">\\<plist version="1.0"></span></span>
<span class="line" id="L367"> <span class="tok-str">\\<dict></span></span>
<span class="line" id="L368"> <span class="tok-str">\\ <key>ProductBuildVersion</key></span></span>
<span class="line" id="L369"> <span class="tok-str">\\ <string>20A2408</string></span></span>
<span class="line" id="L370"> <span class="tok-str">\\ <key>ProductCopyright</key></span></span>
<span class="line" id="L371"> <span class="tok-str">\\ <string>1983-2020 Apple Inc.</string></span></span>
<span class="line" id="L372"> <span class="tok-str">\\ <key>ProductName</key></span></span>
<span class="line" id="L373"> <span class="tok-str">\\ <string>macOS</string></span></span>
<span class="line" id="L374"> <span class="tok-str">\\ <key>ProductUserVisibleVersion</key></span></span>
<span class="line" id="L375"> <span class="tok-str">\\ <string>11.0</string></span></span>
<span class="line" id="L376"> <span class="tok-str">\\ <key>ProductVersion</key></span></span>
<span class="line" id="L377"> <span class="tok-str">\\ <string>11.0</string></span></span>
<span class="line" id="L378"> <span class="tok-str">\\ <key>iOSSupportVersion</key></span></span>
<span class="line" id="L379"> <span class="tok-str">\\ <string>14.2</string></span></span>
<span class="line" id="L380"> <span class="tok-str">\\</dict></span></span>
<span class="line" id="L381"> <span class="tok-str">\\</plist></span></span>
<span class="line" id="L382"> ,</span>
<span class="line" id="L383"> .{ .major = <span class="tok-number">11</span>, .minor = <span class="tok-number">0</span>, .patch = <span class="tok-number">0</span> },</span>
<span class="line" id="L384"> },</span>
<span class="line" id="L385"> .{</span>
<span class="line" id="L386"> <span class="tok-str">\\<?xml version="1.0" encoding="UTF-8"?></span></span>
<span class="line" id="L387"> <span class="tok-str">\\<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"></span></span>
<span class="line" id="L388"> <span class="tok-str">\\<plist version="1.0"></span></span>
<span class="line" id="L389"> <span class="tok-str">\\<dict></span></span>
<span class="line" id="L390"> <span class="tok-str">\\ <key>ProductBuildVersion</key></span></span>
<span class="line" id="L391"> <span class="tok-str">\\ <string>20C63</string></span></span>
<span class="line" id="L392"> <span class="tok-str">\\ <key>ProductCopyright</key></span></span>
<span class="line" id="L393"> <span class="tok-str">\\ <string>1983-2020 Apple Inc.</string></span></span>
<span class="line" id="L394"> <span class="tok-str">\\ <key>ProductName</key></span></span>
<span class="line" id="L395"> <span class="tok-str">\\ <string>macOS</string></span></span>
<span class="line" id="L396"> <span class="tok-str">\\ <key>ProductUserVisibleVersion</key></span></span>
<span class="line" id="L397"> <span class="tok-str">\\ <string>11.1</string></span></span>
<span class="line" id="L398"> <span class="tok-str">\\ <key>ProductVersion</key></span></span>
<span class="line" id="L399"> <span class="tok-str">\\ <string>11.1</string></span></span>
<span class="line" id="L400"> <span class="tok-str">\\ <key>iOSSupportVersion</key></span></span>
<span class="line" id="L401"> <span class="tok-str">\\ <string>14.3</string></span></span>
<span class="line" id="L402"> <span class="tok-str">\\</dict></span></span>
<span class="line" id="L403"> <span class="tok-str">\\</plist></span></span>
<span class="line" id="L404"> ,</span>
<span class="line" id="L405"> .{ .major = <span class="tok-number">11</span>, .minor = <span class="tok-number">1</span>, .patch = <span class="tok-number">0</span> },</span>
<span class="line" id="L406"> },</span>
<span class="line" id="L407"> };</span>
<span class="line" id="L408"></span>
<span class="line" id="L409"> <span class="tok-kw">inline</span> <span class="tok-kw">for</span> (cases) |case| {</span>
<span class="line" id="L410"> <span class="tok-kw">const</span> ver0 = <span class="tok-kw">try</span> parseSystemVersion(case[<span class="tok-number">0</span>]);</span>
<span class="line" id="L411"> <span class="tok-kw">const</span> ver1: std.SemanticVersion = case[<span class="tok-number">1</span>];</span>
<span class="line" id="L412"> <span class="tok-kw">try</span> testing.expectEqual(<span class="tok-builtin">@as</span>(std.math.Order, .eq), ver0.order(ver1));</span>
<span class="line" id="L413"> }</span>
<span class="line" id="L414">}</span>
<span class="line" id="L415"></span>
<span class="line" id="L416"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">detectNativeCpuAndFeatures</span>() ?Target.Cpu {</span>
<span class="line" id="L417"> <span class="tok-kw">var</span> cpu_family: std.c.CPUFAMILY = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L418"> <span class="tok-kw">var</span> len: <span class="tok-type">usize</span> = <span class="tok-builtin">@sizeOf</span>(std.c.CPUFAMILY);</span>
<span class="line" id="L419"> os.sysctlbynameZ(<span class="tok-str">"hw.cpufamily"</span>, &cpu_family, &len, <span class="tok-null">null</span>, <span class="tok-number">0</span>) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L420"> <span class="tok-kw">error</span>.NameTooLong => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// constant, known good value</span>
</span>
<span class="line" id="L421"> <span class="tok-kw">error</span>.PermissionDenied => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// only when setting values,</span>
</span>
<span class="line" id="L422"> <span class="tok-kw">error</span>.SystemResources => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// memory already on the stack</span>
</span>
<span class="line" id="L423"> <span class="tok-kw">error</span>.UnknownName => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// constant, known good value</span>
</span>
<span class="line" id="L424"> <span class="tok-kw">error</span>.Unexpected => <span class="tok-kw">unreachable</span>, <span class="tok-comment">// EFAULT: stack should be safe, EISDIR/ENOTDIR: constant, known good value</span>
</span>
<span class="line" id="L425"> };</span>
<span class="line" id="L426"></span>
<span class="line" id="L427"> <span class="tok-kw">const</span> current_arch = builtin.cpu.arch;</span>
<span class="line" id="L428"> <span class="tok-kw">switch</span> (current_arch) {</span>
<span class="line" id="L429"> .aarch64, .aarch64_be, .aarch64_32 => {</span>
<span class="line" id="L430"> <span class="tok-kw">const</span> model = <span class="tok-kw">switch</span> (cpu_family) {</span>
<span class="line" id="L431"> .ARM_FIRESTORM_ICESTORM => &Target.aarch64.cpu.apple_a14,</span>
<span class="line" id="L432"> .ARM_LIGHTNING_THUNDER => &Target.aarch64.cpu.apple_a13,</span>
<span class="line" id="L433"> .ARM_VORTEX_TEMPEST => &Target.aarch64.cpu.apple_a12,</span>
<span class="line" id="L434"> .ARM_MONSOON_MISTRAL => &Target.aarch64.cpu.apple_a11,</span>
<span class="line" id="L435"> .ARM_HURRICANE => &Target.aarch64.cpu.apple_a10,</span>
<span class="line" id="L436"> .ARM_TWISTER => &Target.aarch64.cpu.apple_a9,</span>
<span class="line" id="L437"> .ARM_TYPHOON => &Target.aarch64.cpu.apple_a8,</span>
<span class="line" id="L438"> .ARM_CYCLONE => &Target.aarch64.cpu.cyclone,</span>
<span class="line" id="L439"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-null">null</span>,</span>
<span class="line" id="L440"> };</span>
<span class="line" id="L441"></span>
<span class="line" id="L442"> <span class="tok-kw">return</span> Target.Cpu{</span>
<span class="line" id="L443"> .arch = current_arch,</span>
<span class="line" id="L444"> .model = model,</span>
<span class="line" id="L445"> .features = model.features,</span>
<span class="line" id="L446"> };</span>
<span class="line" id="L447"> },</span>
<span class="line" id="L448"> <span class="tok-kw">else</span> => {},</span>
<span class="line" id="L449"> }</span>
<span class="line" id="L450"></span>
<span class="line" id="L451"> <span class="tok-kw">return</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L452">}</span>
<span class="line" id="L453"></span>
</code></pre></body>
</html> |
0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/compress/zstandard.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> RingBuffer = std.RingBuffer;</span>
<span class="line" id="L4"></span>
<span class="line" id="L5"><span class="tok-kw">const</span> types = <span class="tok-builtin">@import</span>(<span class="tok-str">"zstandard/types.zig"</span>);</span>
<span class="line" id="L6"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> frame = types.frame;</span>
<span class="line" id="L7"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> compressed_block = types.compressed_block;</span>
<span class="line" id="L8"></span>
<span class="line" id="L9"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> decompress = <span class="tok-builtin">@import</span>(<span class="tok-str">"zstandard/decompress.zig"</span>);</span>
<span class="line" id="L10"></span>
<span class="line" id="L11"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> DecompressStreamOptions = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L12"> verify_checksum: <span class="tok-type">bool</span> = <span class="tok-null">true</span>,</span>
<span class="line" id="L13"> window_size_max: <span class="tok-type">usize</span> = <span class="tok-number">1</span> << <span class="tok-number">23</span>, <span class="tok-comment">// 8MiB default maximum window size</span>
</span>
<span class="line" id="L14">};</span>
<span class="line" id="L15"></span>
<span class="line" id="L16"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">DecompressStream</span>(</span>
<span class="line" id="L17"> <span class="tok-kw">comptime</span> ReaderType: <span class="tok-type">type</span>,</span>
<span class="line" id="L18"> <span class="tok-kw">comptime</span> options: DecompressStreamOptions,</span>
<span class="line" id="L19">) <span class="tok-type">type</span> {</span>
<span class="line" id="L20"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L21"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"> allocator: Allocator,</span>
<span class="line" id="L24"> source: std.io.CountingReader(ReaderType),</span>
<span class="line" id="L25"> state: <span class="tok-kw">enum</span> { NewFrame, InFrame, LastBlock },</span>
<span class="line" id="L26"> decode_state: decompress.block.DecodeState,</span>
<span class="line" id="L27"> frame_context: decompress.FrameContext,</span>
<span class="line" id="L28"> buffer: RingBuffer,</span>
<span class="line" id="L29"> literal_fse_buffer: []types.compressed_block.Table.Fse,</span>
<span class="line" id="L30"> match_fse_buffer: []types.compressed_block.Table.Fse,</span>
<span class="line" id="L31"> offset_fse_buffer: []types.compressed_block.Table.Fse,</span>
<span class="line" id="L32"> literals_buffer: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L33"> sequence_buffer: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L34"> checksum: <span class="tok-kw">if</span> (options.verify_checksum) ?<span class="tok-type">u32</span> <span class="tok-kw">else</span> <span class="tok-type">void</span>,</span>
<span class="line" id="L35"> current_frame_decompressed_size: <span class="tok-type">usize</span>,</span>
<span class="line" id="L36"></span>
<span class="line" id="L37"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = ReaderType.Error || <span class="tok-kw">error</span>{</span>
<span class="line" id="L38"> ChecksumFailure,</span>
<span class="line" id="L39"> DictionaryIdFlagUnsupported,</span>
<span class="line" id="L40"> MalformedBlock,</span>
<span class="line" id="L41"> MalformedFrame,</span>
<span class="line" id="L42"> OutOfMemory,</span>
<span class="line" id="L43"> };</span>
<span class="line" id="L44"></span>
<span class="line" id="L45"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Reader = std.io.Reader(*Self, Error, read);</span>
<span class="line" id="L46"></span>
<span class="line" id="L47"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(allocator: Allocator, source: ReaderType) Self {</span>
<span class="line" id="L48"> <span class="tok-kw">return</span> Self{</span>
<span class="line" id="L49"> .allocator = allocator,</span>
<span class="line" id="L50"> .source = std.io.countingReader(source),</span>
<span class="line" id="L51"> .state = .NewFrame,</span>
<span class="line" id="L52"> .decode_state = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L53"> .frame_context = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L54"> .buffer = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L55"> .literal_fse_buffer = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L56"> .match_fse_buffer = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L57"> .offset_fse_buffer = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L58"> .literals_buffer = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L59"> .sequence_buffer = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L60"> .checksum = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L61"> .current_frame_decompressed_size = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L62"> };</span>
<span class="line" id="L63"> }</span>
<span class="line" id="L64"></span>
<span class="line" id="L65"> <span class="tok-kw">fn</span> <span class="tok-fn">frameInit</span>(self: *Self) !<span class="tok-type">void</span> {</span>
<span class="line" id="L66"> <span class="tok-kw">const</span> source_reader = self.source.reader();</span>
<span class="line" id="L67"> <span class="tok-kw">switch</span> (<span class="tok-kw">try</span> decompress.decodeFrameHeader(source_reader)) {</span>
<span class="line" id="L68"> .skippable => |header| {</span>
<span class="line" id="L69"> <span class="tok-kw">try</span> source_reader.skipBytes(header.frame_size, .{});</span>
<span class="line" id="L70"> self.state = .NewFrame;</span>
<span class="line" id="L71"> },</span>
<span class="line" id="L72"> .zstandard => |header| {</span>
<span class="line" id="L73"> <span class="tok-kw">const</span> frame_context = context: {</span>
<span class="line" id="L74"> <span class="tok-kw">break</span> :context <span class="tok-kw">try</span> decompress.FrameContext.init(</span>
<span class="line" id="L75"> header,</span>
<span class="line" id="L76"> options.window_size_max,</span>
<span class="line" id="L77"> options.verify_checksum,</span>
<span class="line" id="L78"> );</span>
<span class="line" id="L79"> };</span>
<span class="line" id="L80"></span>
<span class="line" id="L81"> <span class="tok-kw">const</span> literal_fse_buffer = <span class="tok-kw">try</span> self.allocator.alloc(</span>
<span class="line" id="L82"> types.compressed_block.Table.Fse,</span>
<span class="line" id="L83"> types.compressed_block.table_size_max.literal,</span>
<span class="line" id="L84"> );</span>
<span class="line" id="L85"> <span class="tok-kw">errdefer</span> self.allocator.free(literal_fse_buffer);</span>
<span class="line" id="L86"></span>
<span class="line" id="L87"> <span class="tok-kw">const</span> match_fse_buffer = <span class="tok-kw">try</span> self.allocator.alloc(</span>
<span class="line" id="L88"> types.compressed_block.Table.Fse,</span>
<span class="line" id="L89"> types.compressed_block.table_size_max.match,</span>
<span class="line" id="L90"> );</span>
<span class="line" id="L91"> <span class="tok-kw">errdefer</span> self.allocator.free(match_fse_buffer);</span>
<span class="line" id="L92"></span>
<span class="line" id="L93"> <span class="tok-kw">const</span> offset_fse_buffer = <span class="tok-kw">try</span> self.allocator.alloc(</span>
<span class="line" id="L94"> types.compressed_block.Table.Fse,</span>
<span class="line" id="L95"> types.compressed_block.table_size_max.offset,</span>
<span class="line" id="L96"> );</span>
<span class="line" id="L97"> <span class="tok-kw">errdefer</span> self.allocator.free(offset_fse_buffer);</span>
<span class="line" id="L98"></span>
<span class="line" id="L99"> <span class="tok-kw">const</span> decode_state = decompress.block.DecodeState.init(</span>
<span class="line" id="L100"> literal_fse_buffer,</span>
<span class="line" id="L101"> match_fse_buffer,</span>
<span class="line" id="L102"> offset_fse_buffer,</span>
<span class="line" id="L103"> );</span>
<span class="line" id="L104"> <span class="tok-kw">const</span> buffer = <span class="tok-kw">try</span> RingBuffer.init(self.allocator, frame_context.window_size);</span>
<span class="line" id="L105"></span>
<span class="line" id="L106"> <span class="tok-kw">const</span> literals_data = <span class="tok-kw">try</span> self.allocator.alloc(<span class="tok-type">u8</span>, options.window_size_max);</span>
<span class="line" id="L107"> <span class="tok-kw">errdefer</span> self.allocator.free(literals_data);</span>
<span class="line" id="L108"></span>
<span class="line" id="L109"> <span class="tok-kw">const</span> sequence_data = <span class="tok-kw">try</span> self.allocator.alloc(<span class="tok-type">u8</span>, options.window_size_max);</span>
<span class="line" id="L110"> <span class="tok-kw">errdefer</span> self.allocator.free(sequence_data);</span>
<span class="line" id="L111"></span>
<span class="line" id="L112"> self.literal_fse_buffer = literal_fse_buffer;</span>
<span class="line" id="L113"> self.match_fse_buffer = match_fse_buffer;</span>
<span class="line" id="L114"> self.offset_fse_buffer = offset_fse_buffer;</span>
<span class="line" id="L115"> self.literals_buffer = literals_data;</span>
<span class="line" id="L116"> self.sequence_buffer = sequence_data;</span>
<span class="line" id="L117"></span>
<span class="line" id="L118"> self.buffer = buffer;</span>
<span class="line" id="L119"></span>
<span class="line" id="L120"> self.decode_state = decode_state;</span>
<span class="line" id="L121"> self.frame_context = frame_context;</span>
<span class="line" id="L122"></span>
<span class="line" id="L123"> self.checksum = <span class="tok-kw">if</span> (options.verify_checksum) <span class="tok-null">null</span> <span class="tok-kw">else</span> {};</span>
<span class="line" id="L124"> self.current_frame_decompressed_size = <span class="tok-number">0</span>;</span>
<span class="line" id="L125"></span>
<span class="line" id="L126"> self.state = .InFrame;</span>
<span class="line" id="L127"> },</span>
<span class="line" id="L128"> }</span>
<span class="line" id="L129"> }</span>
<span class="line" id="L130"></span>
<span class="line" id="L131"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *Self) <span class="tok-type">void</span> {</span>
<span class="line" id="L132"> <span class="tok-kw">if</span> (self.state == .NewFrame) <span class="tok-kw">return</span>;</span>
<span class="line" id="L133"> self.allocator.free(self.decode_state.literal_fse_buffer);</span>
<span class="line" id="L134"> self.allocator.free(self.decode_state.match_fse_buffer);</span>
<span class="line" id="L135"> self.allocator.free(self.decode_state.offset_fse_buffer);</span>
<span class="line" id="L136"> self.allocator.free(self.literals_buffer);</span>
<span class="line" id="L137"> self.allocator.free(self.sequence_buffer);</span>
<span class="line" id="L138"> self.buffer.deinit(self.allocator);</span>
<span class="line" id="L139"> }</span>
<span class="line" id="L140"></span>
<span class="line" id="L141"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reader</span>(self: *Self) Reader {</span>
<span class="line" id="L142"> <span class="tok-kw">return</span> .{ .context = self };</span>
<span class="line" id="L143"> }</span>
<span class="line" id="L144"></span>
<span class="line" id="L145"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">read</span>(self: *Self, buffer: []<span class="tok-type">u8</span>) Error!<span class="tok-type">usize</span> {</span>
<span class="line" id="L146"> <span class="tok-kw">if</span> (buffer.len == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L147"></span>
<span class="line" id="L148"> <span class="tok-kw">var</span> size: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L149"> <span class="tok-kw">while</span> (size == <span class="tok-number">0</span>) {</span>
<span class="line" id="L150"> <span class="tok-kw">while</span> (self.state == .NewFrame) {</span>
<span class="line" id="L151"> <span class="tok-kw">const</span> initial_count = self.source.bytes_read;</span>
<span class="line" id="L152"> self.frameInit() <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L153"> <span class="tok-kw">error</span>.DictionaryIdFlagUnsupported => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.DictionaryIdFlagUnsupported,</span>
<span class="line" id="L154"> <span class="tok-kw">error</span>.EndOfStream => <span class="tok-kw">return</span> <span class="tok-kw">if</span> (self.source.bytes_read == initial_count)</span>
<span class="line" id="L155"> <span class="tok-number">0</span></span>
<span class="line" id="L156"> <span class="tok-kw">else</span></span>
<span class="line" id="L157"> <span class="tok-kw">error</span>.MalformedFrame,</span>
<span class="line" id="L158"> <span class="tok-kw">error</span>.OutOfMemory => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OutOfMemory,</span>
<span class="line" id="L159"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedFrame,</span>
<span class="line" id="L160"> };</span>
<span class="line" id="L161"> }</span>
<span class="line" id="L162"> size = <span class="tok-kw">try</span> self.readInner(buffer);</span>
<span class="line" id="L163"> }</span>
<span class="line" id="L164"> <span class="tok-kw">return</span> size;</span>
<span class="line" id="L165"> }</span>
<span class="line" id="L166"></span>
<span class="line" id="L167"> <span class="tok-kw">fn</span> <span class="tok-fn">readInner</span>(self: *Self, buffer: []<span class="tok-type">u8</span>) Error!<span class="tok-type">usize</span> {</span>
<span class="line" id="L168"> std.debug.assert(self.state != .NewFrame);</span>
<span class="line" id="L169"></span>
<span class="line" id="L170"> <span class="tok-kw">const</span> source_reader = self.source.reader();</span>
<span class="line" id="L171"> <span class="tok-kw">while</span> (self.buffer.isEmpty() <span class="tok-kw">and</span> self.state != .LastBlock) {</span>
<span class="line" id="L172"> <span class="tok-kw">const</span> header_bytes = source_reader.readBytesNoEof(<span class="tok-number">3</span>) <span class="tok-kw">catch</span></span>
<span class="line" id="L173"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedFrame;</span>
<span class="line" id="L174"> <span class="tok-kw">const</span> block_header = decompress.block.decodeBlockHeader(&header_bytes);</span>
<span class="line" id="L175"></span>
<span class="line" id="L176"> decompress.block.decodeBlockReader(</span>
<span class="line" id="L177"> &self.buffer,</span>
<span class="line" id="L178"> source_reader,</span>
<span class="line" id="L179"> block_header,</span>
<span class="line" id="L180"> &self.decode_state,</span>
<span class="line" id="L181"> self.frame_context.block_size_max,</span>
<span class="line" id="L182"> self.literals_buffer,</span>
<span class="line" id="L183"> self.sequence_buffer,</span>
<span class="line" id="L184"> ) <span class="tok-kw">catch</span></span>
<span class="line" id="L185"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedBlock;</span>
<span class="line" id="L186"></span>
<span class="line" id="L187"> <span class="tok-kw">if</span> (self.frame_context.content_size) |size| {</span>
<span class="line" id="L188"> <span class="tok-kw">if</span> (self.current_frame_decompressed_size > size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedFrame;</span>
<span class="line" id="L189"> }</span>
<span class="line" id="L190"></span>
<span class="line" id="L191"> <span class="tok-kw">const</span> size = self.buffer.len();</span>
<span class="line" id="L192"> self.current_frame_decompressed_size += size;</span>
<span class="line" id="L193"></span>
<span class="line" id="L194"> <span class="tok-kw">if</span> (self.frame_context.hasher_opt) |*hasher| {</span>
<span class="line" id="L195"> <span class="tok-kw">if</span> (size > <span class="tok-number">0</span>) {</span>
<span class="line" id="L196"> <span class="tok-kw">const</span> written_slice = self.buffer.sliceLast(size);</span>
<span class="line" id="L197"> hasher.update(written_slice.first);</span>
<span class="line" id="L198"> hasher.update(written_slice.second);</span>
<span class="line" id="L199"> }</span>
<span class="line" id="L200"> }</span>
<span class="line" id="L201"> <span class="tok-kw">if</span> (block_header.last_block) {</span>
<span class="line" id="L202"> self.state = .LastBlock;</span>
<span class="line" id="L203"> <span class="tok-kw">if</span> (self.frame_context.has_checksum) {</span>
<span class="line" id="L204"> <span class="tok-kw">const</span> checksum = source_reader.readIntLittle(<span class="tok-type">u32</span>) <span class="tok-kw">catch</span></span>
<span class="line" id="L205"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedFrame;</span>
<span class="line" id="L206"> <span class="tok-kw">if</span> (<span class="tok-kw">comptime</span> options.verify_checksum) {</span>
<span class="line" id="L207"> <span class="tok-kw">if</span> (self.frame_context.hasher_opt) |*hasher| {</span>
<span class="line" id="L208"> <span class="tok-kw">if</span> (checksum != decompress.computeChecksum(hasher))</span>
<span class="line" id="L209"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ChecksumFailure;</span>
<span class="line" id="L210"> }</span>
<span class="line" id="L211"> }</span>
<span class="line" id="L212"> }</span>
<span class="line" id="L213"> <span class="tok-kw">if</span> (self.frame_context.content_size) |content_size| {</span>
<span class="line" id="L214"> <span class="tok-kw">if</span> (content_size != self.current_frame_decompressed_size) {</span>
<span class="line" id="L215"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedFrame;</span>
<span class="line" id="L216"> }</span>
<span class="line" id="L217"> }</span>
<span class="line" id="L218"> }</span>
<span class="line" id="L219"> }</span>
<span class="line" id="L220"></span>
<span class="line" id="L221"> <span class="tok-kw">const</span> size = <span class="tok-builtin">@min</span>(self.buffer.len(), buffer.len);</span>
<span class="line" id="L222"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..size) |i| {</span>
<span class="line" id="L223"> buffer[i] = self.buffer.read().?;</span>
<span class="line" id="L224"> }</span>
<span class="line" id="L225"> <span class="tok-kw">if</span> (self.state == .LastBlock <span class="tok-kw">and</span> self.buffer.len() == <span class="tok-number">0</span>) {</span>
<span class="line" id="L226"> self.state = .NewFrame;</span>
<span class="line" id="L227"> self.allocator.free(self.literal_fse_buffer);</span>
<span class="line" id="L228"> self.allocator.free(self.match_fse_buffer);</span>
<span class="line" id="L229"> self.allocator.free(self.offset_fse_buffer);</span>
<span class="line" id="L230"> self.allocator.free(self.literals_buffer);</span>
<span class="line" id="L231"> self.allocator.free(self.sequence_buffer);</span>
<span class="line" id="L232"> self.buffer.deinit(self.allocator);</span>
<span class="line" id="L233"> }</span>
<span class="line" id="L234"> <span class="tok-kw">return</span> size;</span>
<span class="line" id="L235"> }</span>
<span class="line" id="L236"> };</span>
<span class="line" id="L237">}</span>
<span class="line" id="L238"></span>
<span class="line" id="L239"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decompressStreamOptions</span>(</span>
<span class="line" id="L240"> allocator: Allocator,</span>
<span class="line" id="L241"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L242"> <span class="tok-kw">comptime</span> options: DecompressStreamOptions,</span>
<span class="line" id="L243">) DecompressStream(<span class="tok-builtin">@TypeOf</span>(reader, options)) {</span>
<span class="line" id="L244"> <span class="tok-kw">return</span> DecompressStream(<span class="tok-builtin">@TypeOf</span>(reader), options).init(allocator, reader);</span>
<span class="line" id="L245">}</span>
<span class="line" id="L246"></span>
<span class="line" id="L247"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decompressStream</span>(</span>
<span class="line" id="L248"> allocator: Allocator,</span>
<span class="line" id="L249"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L250">) DecompressStream(<span class="tok-builtin">@TypeOf</span>(reader), .{}) {</span>
<span class="line" id="L251"> <span class="tok-kw">return</span> DecompressStream(<span class="tok-builtin">@TypeOf</span>(reader), .{}).init(allocator, reader);</span>
<span class="line" id="L252">}</span>
<span class="line" id="L253"></span>
<span class="line" id="L254"><span class="tok-kw">fn</span> <span class="tok-fn">testDecompress</span>(data: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) ![]<span class="tok-type">u8</span> {</span>
<span class="line" id="L255"> <span class="tok-kw">var</span> in_stream = std.io.fixedBufferStream(data);</span>
<span class="line" id="L256"> <span class="tok-kw">var</span> zstd_stream = decompressStream(std.testing.allocator, in_stream.reader());</span>
<span class="line" id="L257"> <span class="tok-kw">defer</span> zstd_stream.deinit();</span>
<span class="line" id="L258"> <span class="tok-kw">const</span> result = zstd_stream.reader().readAllAlloc(std.testing.allocator, std.math.maxInt(<span class="tok-type">usize</span>));</span>
<span class="line" id="L259"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L260">}</span>
<span class="line" id="L261"></span>
<span class="line" id="L262"><span class="tok-kw">fn</span> <span class="tok-fn">testReader</span>(data: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, <span class="tok-kw">comptime</span> expected: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L263"> <span class="tok-kw">const</span> buf = <span class="tok-kw">try</span> testDecompress(data);</span>
<span class="line" id="L264"> <span class="tok-kw">defer</span> std.testing.allocator.free(buf);</span>
<span class="line" id="L265"> <span class="tok-kw">try</span> std.testing.expectEqualSlices(<span class="tok-type">u8</span>, expected, buf);</span>
<span class="line" id="L266">}</span>
<span class="line" id="L267"></span>
<span class="line" id="L268"><span class="tok-kw">test</span> <span class="tok-str">"zstandard decompression"</span> {</span>
<span class="line" id="L269"> <span class="tok-kw">const</span> uncompressed = <span class="tok-builtin">@embedFile</span>(<span class="tok-str">"testdata/rfc8478.txt"</span>);</span>
<span class="line" id="L270"> <span class="tok-kw">const</span> compressed3 = <span class="tok-builtin">@embedFile</span>(<span class="tok-str">"testdata/rfc8478.txt.zst.3"</span>);</span>
<span class="line" id="L271"> <span class="tok-kw">const</span> compressed19 = <span class="tok-builtin">@embedFile</span>(<span class="tok-str">"testdata/rfc8478.txt.zst.19"</span>);</span>
<span class="line" id="L272"></span>
<span class="line" id="L273"> <span class="tok-kw">var</span> buffer = <span class="tok-kw">try</span> std.testing.allocator.alloc(<span class="tok-type">u8</span>, uncompressed.len);</span>
<span class="line" id="L274"> <span class="tok-kw">defer</span> std.testing.allocator.free(buffer);</span>
<span class="line" id="L275"></span>
<span class="line" id="L276"> <span class="tok-kw">const</span> res3 = <span class="tok-kw">try</span> decompress.decode(buffer, compressed3, <span class="tok-null">true</span>);</span>
<span class="line" id="L277"> <span class="tok-kw">try</span> std.testing.expectEqual(uncompressed.len, res3);</span>
<span class="line" id="L278"> <span class="tok-kw">try</span> std.testing.expectEqualSlices(<span class="tok-type">u8</span>, uncompressed, buffer);</span>
<span class="line" id="L279"></span>
<span class="line" id="L280"> <span class="tok-kw">const</span> res19 = <span class="tok-kw">try</span> decompress.decode(buffer, compressed19, <span class="tok-null">true</span>);</span>
<span class="line" id="L281"> <span class="tok-kw">try</span> std.testing.expectEqual(uncompressed.len, res19);</span>
<span class="line" id="L282"> <span class="tok-kw">try</span> std.testing.expectEqualSlices(<span class="tok-type">u8</span>, uncompressed, buffer);</span>
<span class="line" id="L283"></span>
<span class="line" id="L284"> <span class="tok-kw">try</span> testReader(compressed3, uncompressed);</span>
<span class="line" id="L285"> <span class="tok-kw">try</span> testReader(compressed19, uncompressed);</span>
<span class="line" id="L286">}</span>
<span class="line" id="L287"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/compress/lzma.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L5"></span>
<span class="line" id="L6"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> decode = <span class="tok-builtin">@import</span>(<span class="tok-str">"lzma/decode.zig"</span>);</span>
<span class="line" id="L7"></span>
<span class="line" id="L8"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decompress</span>(</span>
<span class="line" id="L9"> allocator: Allocator,</span>
<span class="line" id="L10"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L11">) !Decompress(<span class="tok-builtin">@TypeOf</span>(reader)) {</span>
<span class="line" id="L12"> <span class="tok-kw">return</span> decompressWithOptions(allocator, reader, .{});</span>
<span class="line" id="L13">}</span>
<span class="line" id="L14"></span>
<span class="line" id="L15"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decompressWithOptions</span>(</span>
<span class="line" id="L16"> allocator: Allocator,</span>
<span class="line" id="L17"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L18"> options: decode.Options,</span>
<span class="line" id="L19">) !Decompress(<span class="tok-builtin">@TypeOf</span>(reader)) {</span>
<span class="line" id="L20"> <span class="tok-kw">const</span> params = <span class="tok-kw">try</span> decode.Params.readHeader(reader, options);</span>
<span class="line" id="L21"> <span class="tok-kw">return</span> Decompress(<span class="tok-builtin">@TypeOf</span>(reader)).init(allocator, reader, params, options.memlimit);</span>
<span class="line" id="L22">}</span>
<span class="line" id="L23"></span>
<span class="line" id="L24"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">Decompress</span>(<span class="tok-kw">comptime</span> ReaderType: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L25"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L26"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L27"></span>
<span class="line" id="L28"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error =</span>
<span class="line" id="L29"> ReaderType.Error ||</span>
<span class="line" id="L30"> Allocator.Error ||</span>
<span class="line" id="L31"> <span class="tok-kw">error</span>{ CorruptInput, EndOfStream, Overflow };</span>
<span class="line" id="L32"></span>
<span class="line" id="L33"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Reader = std.io.Reader(*Self, Error, read);</span>
<span class="line" id="L34"></span>
<span class="line" id="L35"> allocator: Allocator,</span>
<span class="line" id="L36"> in_reader: ReaderType,</span>
<span class="line" id="L37"> to_read: std.ArrayListUnmanaged(<span class="tok-type">u8</span>),</span>
<span class="line" id="L38"></span>
<span class="line" id="L39"> buffer: decode.lzbuffer.LzCircularBuffer,</span>
<span class="line" id="L40"> decoder: decode.rangecoder.RangeDecoder,</span>
<span class="line" id="L41"> state: decode.DecoderState,</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(allocator: Allocator, source: ReaderType, params: decode.Params, memlimit: ?<span class="tok-type">usize</span>) !Self {</span>
<span class="line" id="L44"> <span class="tok-kw">return</span> Self{</span>
<span class="line" id="L45"> .allocator = allocator,</span>
<span class="line" id="L46"> .in_reader = source,</span>
<span class="line" id="L47"> .to_read = .{},</span>
<span class="line" id="L48"></span>
<span class="line" id="L49"> .buffer = decode.lzbuffer.LzCircularBuffer.init(params.dict_size, memlimit <span class="tok-kw">orelse</span> math.maxInt(<span class="tok-type">usize</span>)),</span>
<span class="line" id="L50"> .decoder = <span class="tok-kw">try</span> decode.rangecoder.RangeDecoder.init(source),</span>
<span class="line" id="L51"> .state = <span class="tok-kw">try</span> decode.DecoderState.init(allocator, params.properties, params.unpacked_size),</span>
<span class="line" id="L52"> };</span>
<span class="line" id="L53"> }</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reader</span>(self: *Self) Reader {</span>
<span class="line" id="L56"> <span class="tok-kw">return</span> .{ .context = self };</span>
<span class="line" id="L57"> }</span>
<span class="line" id="L58"></span>
<span class="line" id="L59"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *Self) <span class="tok-type">void</span> {</span>
<span class="line" id="L60"> self.to_read.deinit(self.allocator);</span>
<span class="line" id="L61"> self.buffer.deinit(self.allocator);</span>
<span class="line" id="L62"> self.state.deinit(self.allocator);</span>
<span class="line" id="L63"> self.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L64"> }</span>
<span class="line" id="L65"></span>
<span class="line" id="L66"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">read</span>(self: *Self, output: []<span class="tok-type">u8</span>) Error!<span class="tok-type">usize</span> {</span>
<span class="line" id="L67"> <span class="tok-kw">const</span> writer = self.to_read.writer(self.allocator);</span>
<span class="line" id="L68"> <span class="tok-kw">while</span> (self.to_read.items.len < output.len) {</span>
<span class="line" id="L69"> <span class="tok-kw">switch</span> (<span class="tok-kw">try</span> self.state.process(self.allocator, self.in_reader, writer, &self.buffer, &self.decoder)) {</span>
<span class="line" id="L70"> .continue_ => {},</span>
<span class="line" id="L71"> .finished => {</span>
<span class="line" id="L72"> <span class="tok-kw">try</span> self.buffer.finish(writer);</span>
<span class="line" id="L73"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L74"> },</span>
<span class="line" id="L75"> }</span>
<span class="line" id="L76"> }</span>
<span class="line" id="L77"> <span class="tok-kw">const</span> input = self.to_read.items;</span>
<span class="line" id="L78"> <span class="tok-kw">const</span> n = <span class="tok-builtin">@min</span>(input.len, output.len);</span>
<span class="line" id="L79"> <span class="tok-builtin">@memcpy</span>(output[<span class="tok-number">0</span>..n], input[<span class="tok-number">0</span>..n]);</span>
<span class="line" id="L80"> <span class="tok-builtin">@memcpy</span>(input[<span class="tok-number">0</span> .. input.len - n], input[n..]);</span>
<span class="line" id="L81"> self.to_read.shrinkRetainingCapacity(input.len - n);</span>
<span class="line" id="L82"> <span class="tok-kw">return</span> n;</span>
<span class="line" id="L83"> }</span>
<span class="line" id="L84"> };</span>
<span class="line" id="L85">}</span>
<span class="line" id="L86"></span>
<span class="line" id="L87"><span class="tok-kw">test</span> {</span>
<span class="line" id="L88"> _ = <span class="tok-builtin">@import</span>(<span class="tok-str">"lzma/test.zig"</span>);</span>
<span class="line" id="L89"> _ = <span class="tok-builtin">@import</span>(<span class="tok-str">"lzma/vec2d.zig"</span>);</span>
<span class="line" id="L90">}</span>
<span class="line" id="L91"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/compress/xz.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> block = <span class="tok-builtin">@import</span>(<span class="tok-str">"xz/block.zig"</span>);</span>
<span class="line" id="L3"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> Crc32 = std.hash.Crc32;</span>
<span class="line" id="L5"></span>
<span class="line" id="L6"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Check = <span class="tok-kw">enum</span>(<span class="tok-type">u4</span>) {</span>
<span class="line" id="L7"> none = <span class="tok-number">0x00</span>,</span>
<span class="line" id="L8"> crc32 = <span class="tok-number">0x01</span>,</span>
<span class="line" id="L9"> crc64 = <span class="tok-number">0x04</span>,</span>
<span class="line" id="L10"> sha256 = <span class="tok-number">0x0A</span>,</span>
<span class="line" id="L11"> _,</span>
<span class="line" id="L12">};</span>
<span class="line" id="L13"></span>
<span class="line" id="L14"><span class="tok-kw">fn</span> <span class="tok-fn">readStreamFlags</span>(reader: <span class="tok-kw">anytype</span>, check: *Check) !<span class="tok-type">void</span> {</span>
<span class="line" id="L15"> <span class="tok-kw">var</span> bit_reader = std.io.bitReader(.Little, reader);</span>
<span class="line" id="L16"></span>
<span class="line" id="L17"> <span class="tok-kw">const</span> reserved1 = <span class="tok-kw">try</span> bit_reader.readBitsNoEof(<span class="tok-type">u8</span>, <span class="tok-number">8</span>);</span>
<span class="line" id="L18"> <span class="tok-kw">if</span> (reserved1 != <span class="tok-number">0</span>)</span>
<span class="line" id="L19"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L20"></span>
<span class="line" id="L21"> check.* = <span class="tok-builtin">@as</span>(Check, <span class="tok-builtin">@enumFromInt</span>(<span class="tok-kw">try</span> bit_reader.readBitsNoEof(<span class="tok-type">u4</span>, <span class="tok-number">4</span>)));</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"> <span class="tok-kw">const</span> reserved2 = <span class="tok-kw">try</span> bit_reader.readBitsNoEof(<span class="tok-type">u4</span>, <span class="tok-number">4</span>);</span>
<span class="line" id="L24"> <span class="tok-kw">if</span> (reserved2 != <span class="tok-number">0</span>)</span>
<span class="line" id="L25"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L26">}</span>
<span class="line" id="L27"></span>
<span class="line" id="L28"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decompress</span>(allocator: Allocator, reader: <span class="tok-kw">anytype</span>) !Decompress(<span class="tok-builtin">@TypeOf</span>(reader)) {</span>
<span class="line" id="L29"> <span class="tok-kw">return</span> Decompress(<span class="tok-builtin">@TypeOf</span>(reader)).init(allocator, reader);</span>
<span class="line" id="L30">}</span>
<span class="line" id="L31"></span>
<span class="line" id="L32"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">Decompress</span>(<span class="tok-kw">comptime</span> ReaderType: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L33"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L34"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L35"></span>
<span class="line" id="L36"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = ReaderType.Error || block.Decoder(ReaderType).Error;</span>
<span class="line" id="L37"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Reader = std.io.Reader(*Self, Error, read);</span>
<span class="line" id="L38"></span>
<span class="line" id="L39"> allocator: Allocator,</span>
<span class="line" id="L40"> block_decoder: block.Decoder(ReaderType),</span>
<span class="line" id="L41"> in_reader: ReaderType,</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(allocator: Allocator, source: ReaderType) !Self {</span>
<span class="line" id="L44"> <span class="tok-kw">const</span> magic = <span class="tok-kw">try</span> source.readBytesNoEof(<span class="tok-number">6</span>);</span>
<span class="line" id="L45"> <span class="tok-kw">if</span> (!std.mem.eql(<span class="tok-type">u8</span>, &magic, &.{ <span class="tok-number">0xFD</span>, <span class="tok-str">'7'</span>, <span class="tok-str">'z'</span>, <span class="tok-str">'X'</span>, <span class="tok-str">'Z'</span>, <span class="tok-number">0x00</span> }))</span>
<span class="line" id="L46"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BadHeader;</span>
<span class="line" id="L47"></span>
<span class="line" id="L48"> <span class="tok-kw">var</span> check: Check = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L49"> <span class="tok-kw">const</span> hash_a = blk: {</span>
<span class="line" id="L50"> <span class="tok-kw">var</span> hasher = std.compress.hashedReader(source, Crc32.init());</span>
<span class="line" id="L51"> <span class="tok-kw">try</span> readStreamFlags(hasher.reader(), &check);</span>
<span class="line" id="L52"> <span class="tok-kw">break</span> :blk hasher.hasher.final();</span>
<span class="line" id="L53"> };</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"> <span class="tok-kw">const</span> hash_b = <span class="tok-kw">try</span> source.readIntLittle(<span class="tok-type">u32</span>);</span>
<span class="line" id="L56"> <span class="tok-kw">if</span> (hash_a != hash_b)</span>
<span class="line" id="L57"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.WrongChecksum;</span>
<span class="line" id="L58"></span>
<span class="line" id="L59"> <span class="tok-kw">return</span> Self{</span>
<span class="line" id="L60"> .allocator = allocator,</span>
<span class="line" id="L61"> .block_decoder = <span class="tok-kw">try</span> block.decoder(allocator, source, check),</span>
<span class="line" id="L62"> .in_reader = source,</span>
<span class="line" id="L63"> };</span>
<span class="line" id="L64"> }</span>
<span class="line" id="L65"></span>
<span class="line" id="L66"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *Self) <span class="tok-type">void</span> {</span>
<span class="line" id="L67"> self.block_decoder.deinit();</span>
<span class="line" id="L68"> }</span>
<span class="line" id="L69"></span>
<span class="line" id="L70"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reader</span>(self: *Self) Reader {</span>
<span class="line" id="L71"> <span class="tok-kw">return</span> .{ .context = self };</span>
<span class="line" id="L72"> }</span>
<span class="line" id="L73"></span>
<span class="line" id="L74"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">read</span>(self: *Self, buffer: []<span class="tok-type">u8</span>) Error!<span class="tok-type">usize</span> {</span>
<span class="line" id="L75"> <span class="tok-kw">if</span> (buffer.len == <span class="tok-number">0</span>)</span>
<span class="line" id="L76"> <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L77"></span>
<span class="line" id="L78"> <span class="tok-kw">const</span> r = <span class="tok-kw">try</span> self.block_decoder.read(buffer);</span>
<span class="line" id="L79"> <span class="tok-kw">if</span> (r != <span class="tok-number">0</span>)</span>
<span class="line" id="L80"> <span class="tok-kw">return</span> r;</span>
<span class="line" id="L81"></span>
<span class="line" id="L82"> <span class="tok-kw">const</span> index_size = blk: {</span>
<span class="line" id="L83"> <span class="tok-kw">var</span> hasher = std.compress.hashedReader(self.in_reader, Crc32.init());</span>
<span class="line" id="L84"> hasher.hasher.update(&[<span class="tok-number">1</span>]<span class="tok-type">u8</span>{<span class="tok-number">0x00</span>});</span>
<span class="line" id="L85"></span>
<span class="line" id="L86"> <span class="tok-kw">var</span> counter = std.io.countingReader(hasher.reader());</span>
<span class="line" id="L87"> counter.bytes_read += <span class="tok-number">1</span>;</span>
<span class="line" id="L88"></span>
<span class="line" id="L89"> <span class="tok-kw">const</span> counting_reader = counter.reader();</span>
<span class="line" id="L90"></span>
<span class="line" id="L91"> <span class="tok-kw">const</span> record_count = <span class="tok-kw">try</span> std.leb.readULEB128(<span class="tok-type">u64</span>, counting_reader);</span>
<span class="line" id="L92"> <span class="tok-kw">if</span> (record_count != self.block_decoder.block_count)</span>
<span class="line" id="L93"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L94"></span>
<span class="line" id="L95"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L96"> <span class="tok-kw">while</span> (i < record_count) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L97"> <span class="tok-comment">// TODO: validate records</span>
</span>
<span class="line" id="L98"> _ = <span class="tok-kw">try</span> std.leb.readULEB128(<span class="tok-type">u64</span>, counting_reader);</span>
<span class="line" id="L99"> _ = <span class="tok-kw">try</span> std.leb.readULEB128(<span class="tok-type">u64</span>, counting_reader);</span>
<span class="line" id="L100"> }</span>
<span class="line" id="L101"></span>
<span class="line" id="L102"> <span class="tok-kw">while</span> (counter.bytes_read % <span class="tok-number">4</span> != <span class="tok-number">0</span>) {</span>
<span class="line" id="L103"> <span class="tok-kw">if</span> (<span class="tok-kw">try</span> counting_reader.readByte() != <span class="tok-number">0</span>)</span>
<span class="line" id="L104"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L105"> }</span>
<span class="line" id="L106"></span>
<span class="line" id="L107"> <span class="tok-kw">const</span> hash_a = hasher.hasher.final();</span>
<span class="line" id="L108"> <span class="tok-kw">const</span> hash_b = <span class="tok-kw">try</span> counting_reader.readIntLittle(<span class="tok-type">u32</span>);</span>
<span class="line" id="L109"> <span class="tok-kw">if</span> (hash_a != hash_b)</span>
<span class="line" id="L110"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.WrongChecksum;</span>
<span class="line" id="L111"></span>
<span class="line" id="L112"> <span class="tok-kw">break</span> :blk counter.bytes_read;</span>
<span class="line" id="L113"> };</span>
<span class="line" id="L114"></span>
<span class="line" id="L115"> <span class="tok-kw">const</span> hash_a = <span class="tok-kw">try</span> self.in_reader.readIntLittle(<span class="tok-type">u32</span>);</span>
<span class="line" id="L116"></span>
<span class="line" id="L117"> <span class="tok-kw">const</span> hash_b = blk: {</span>
<span class="line" id="L118"> <span class="tok-kw">var</span> hasher = std.compress.hashedReader(self.in_reader, Crc32.init());</span>
<span class="line" id="L119"> <span class="tok-kw">const</span> hashed_reader = hasher.reader();</span>
<span class="line" id="L120"></span>
<span class="line" id="L121"> <span class="tok-kw">const</span> backward_size = (<span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-kw">try</span> hashed_reader.readIntLittle(<span class="tok-type">u32</span>)) + <span class="tok-number">1</span>) * <span class="tok-number">4</span>;</span>
<span class="line" id="L122"> <span class="tok-kw">if</span> (backward_size != index_size)</span>
<span class="line" id="L123"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L124"></span>
<span class="line" id="L125"> <span class="tok-kw">var</span> check: Check = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L126"> <span class="tok-kw">try</span> readStreamFlags(hashed_reader, &check);</span>
<span class="line" id="L127"></span>
<span class="line" id="L128"> <span class="tok-kw">break</span> :blk hasher.hasher.final();</span>
<span class="line" id="L129"> };</span>
<span class="line" id="L130"></span>
<span class="line" id="L131"> <span class="tok-kw">if</span> (hash_a != hash_b)</span>
<span class="line" id="L132"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.WrongChecksum;</span>
<span class="line" id="L133"></span>
<span class="line" id="L134"> <span class="tok-kw">const</span> magic = <span class="tok-kw">try</span> self.in_reader.readBytesNoEof(<span class="tok-number">2</span>);</span>
<span class="line" id="L135"> <span class="tok-kw">if</span> (!std.mem.eql(<span class="tok-type">u8</span>, &magic, &.{ <span class="tok-str">'Y'</span>, <span class="tok-str">'Z'</span> }))</span>
<span class="line" id="L136"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L137"></span>
<span class="line" id="L138"> <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L139"> }</span>
<span class="line" id="L140"> };</span>
<span class="line" id="L141">}</span>
<span class="line" id="L142"></span>
<span class="line" id="L143"><span class="tok-kw">test</span> {</span>
<span class="line" id="L144"> _ = <span class="tok-builtin">@import</span>(<span class="tok-str">"xz/test.zig"</span>);</span>
<span class="line" id="L145">}</span>
<span class="line" id="L146"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//</span>
</span>
<span class="line" id="L2"><span class="tok-comment">// Compressor/Decompressor for ZLIB data streams (RFC1950)</span>
</span>
<span class="line" id="L3"></span>
<span class="line" id="L4"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L5"><span class="tok-kw">const</span> io = std.io;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> fs = std.fs;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L9"><span class="tok-kw">const</span> deflate = std.compress.deflate;</span>
<span class="line" id="L10"></span>
<span class="line" id="L11"><span class="tok-comment">// Zlib header format as specified in RFC1950</span>
</span>
<span class="line" id="L12"><span class="tok-kw">const</span> ZLibHeader = <span class="tok-kw">packed</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L13"> checksum: <span class="tok-type">u5</span>,</span>
<span class="line" id="L14"> preset_dict: <span class="tok-type">u1</span>,</span>
<span class="line" id="L15"> compression_level: <span class="tok-type">u2</span>,</span>
<span class="line" id="L16"> compression_method: <span class="tok-type">u4</span>,</span>
<span class="line" id="L17"> compression_info: <span class="tok-type">u4</span>,</span>
<span class="line" id="L18"></span>
<span class="line" id="L19"> <span class="tok-kw">const</span> DEFLATE = <span class="tok-number">8</span>;</span>
<span class="line" id="L20"> <span class="tok-kw">const</span> WINDOW_32K = <span class="tok-number">7</span>;</span>
<span class="line" id="L21">};</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">DecompressStream</span>(<span class="tok-kw">comptime</span> ReaderType: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L24"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L25"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L26"></span>
<span class="line" id="L27"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = ReaderType.Error ||</span>
<span class="line" id="L28"> deflate.Decompressor(ReaderType).Error ||</span>
<span class="line" id="L29"> <span class="tok-kw">error</span>{ WrongChecksum, Unsupported };</span>
<span class="line" id="L30"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Reader = io.Reader(*Self, Error, read);</span>
<span class="line" id="L31"></span>
<span class="line" id="L32"> allocator: mem.Allocator,</span>
<span class="line" id="L33"> inflater: deflate.Decompressor(ReaderType),</span>
<span class="line" id="L34"> in_reader: ReaderType,</span>
<span class="line" id="L35"> hasher: std.hash.Adler32,</span>
<span class="line" id="L36"></span>
<span class="line" id="L37"> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(allocator: mem.Allocator, source: ReaderType) !Self {</span>
<span class="line" id="L38"> <span class="tok-comment">// Zlib header format is specified in RFC1950</span>
</span>
<span class="line" id="L39"> <span class="tok-kw">const</span> header_u16 = <span class="tok-kw">try</span> source.readIntBig(<span class="tok-type">u16</span>);</span>
<span class="line" id="L40"></span>
<span class="line" id="L41"> <span class="tok-comment">// verify the header checksum</span>
</span>
<span class="line" id="L42"> <span class="tok-kw">if</span> (header_u16 % <span class="tok-number">31</span> != <span class="tok-number">0</span>)</span>
<span class="line" id="L43"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BadHeader;</span>
<span class="line" id="L44"> <span class="tok-kw">const</span> header = <span class="tok-builtin">@as</span>(ZLibHeader, <span class="tok-builtin">@bitCast</span>(header_u16));</span>
<span class="line" id="L45"></span>
<span class="line" id="L46"> <span class="tok-comment">// The CM field must be 8 to indicate the use of DEFLATE</span>
</span>
<span class="line" id="L47"> <span class="tok-kw">if</span> (header.compression_method != ZLibHeader.DEFLATE)</span>
<span class="line" id="L48"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidCompression;</span>
<span class="line" id="L49"> <span class="tok-comment">// CINFO is the base-2 logarithm of the LZ77 window size, minus 8.</span>
</span>
<span class="line" id="L50"> <span class="tok-comment">// Values above 7 are unspecified and therefore rejected.</span>
</span>
<span class="line" id="L51"> <span class="tok-kw">if</span> (header.compression_info > ZLibHeader.WINDOW_32K)</span>
<span class="line" id="L52"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidWindowSize;</span>
<span class="line" id="L53"></span>
<span class="line" id="L54"> <span class="tok-kw">const</span> dictionary = <span class="tok-null">null</span>;</span>
<span class="line" id="L55"> <span class="tok-comment">// TODO: Support this case</span>
</span>
<span class="line" id="L56"> <span class="tok-kw">if</span> (header.preset_dict != <span class="tok-number">0</span>)</span>
<span class="line" id="L57"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Unsupported;</span>
<span class="line" id="L58"></span>
<span class="line" id="L59"> <span class="tok-kw">return</span> Self{</span>
<span class="line" id="L60"> .allocator = allocator,</span>
<span class="line" id="L61"> .inflater = <span class="tok-kw">try</span> deflate.decompressor(allocator, source, dictionary),</span>
<span class="line" id="L62"> .in_reader = source,</span>
<span class="line" id="L63"> .hasher = std.hash.Adler32.init(),</span>
<span class="line" id="L64"> };</span>
<span class="line" id="L65"> }</span>
<span class="line" id="L66"></span>
<span class="line" id="L67"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *Self) <span class="tok-type">void</span> {</span>
<span class="line" id="L68"> self.inflater.deinit();</span>
<span class="line" id="L69"> }</span>
<span class="line" id="L70"></span>
<span class="line" id="L71"> <span class="tok-comment">// Implements the io.Reader interface</span>
</span>
<span class="line" id="L72"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">read</span>(self: *Self, buffer: []<span class="tok-type">u8</span>) Error!<span class="tok-type">usize</span> {</span>
<span class="line" id="L73"> <span class="tok-kw">if</span> (buffer.len == <span class="tok-number">0</span>)</span>
<span class="line" id="L74"> <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L75"></span>
<span class="line" id="L76"> <span class="tok-comment">// Read from the compressed stream and update the computed checksum</span>
</span>
<span class="line" id="L77"> <span class="tok-kw">const</span> r = <span class="tok-kw">try</span> self.inflater.read(buffer);</span>
<span class="line" id="L78"> <span class="tok-kw">if</span> (r != <span class="tok-number">0</span>) {</span>
<span class="line" id="L79"> self.hasher.update(buffer[<span class="tok-number">0</span>..r]);</span>
<span class="line" id="L80"> <span class="tok-kw">return</span> r;</span>
<span class="line" id="L81"> }</span>
<span class="line" id="L82"></span>
<span class="line" id="L83"> <span class="tok-comment">// We've reached the end of stream, check if the checksum matches</span>
</span>
<span class="line" id="L84"> <span class="tok-kw">const</span> hash = <span class="tok-kw">try</span> self.in_reader.readIntBig(<span class="tok-type">u32</span>);</span>
<span class="line" id="L85"> <span class="tok-kw">if</span> (hash != self.hasher.final())</span>
<span class="line" id="L86"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.WrongChecksum;</span>
<span class="line" id="L87"></span>
<span class="line" id="L88"> <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L89"> }</span>
<span class="line" id="L90"></span>
<span class="line" id="L91"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reader</span>(self: *Self) Reader {</span>
<span class="line" id="L92"> <span class="tok-kw">return</span> .{ .context = self };</span>
<span class="line" id="L93"> }</span>
<span class="line" id="L94"> };</span>
<span class="line" id="L95">}</span>
<span class="line" id="L96"></span>
<span class="line" id="L97"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decompressStream</span>(allocator: mem.Allocator, reader: <span class="tok-kw">anytype</span>) !DecompressStream(<span class="tok-builtin">@TypeOf</span>(reader)) {</span>
<span class="line" id="L98"> <span class="tok-kw">return</span> DecompressStream(<span class="tok-builtin">@TypeOf</span>(reader)).init(allocator, reader);</span>
<span class="line" id="L99">}</span>
<span class="line" id="L100"></span>
<span class="line" id="L101"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> CompressionLevel = <span class="tok-kw">enum</span>(<span class="tok-type">u2</span>) {</span>
<span class="line" id="L102"> no_compression = <span class="tok-number">0</span>,</span>
<span class="line" id="L103"> fastest = <span class="tok-number">1</span>,</span>
<span class="line" id="L104"> default = <span class="tok-number">2</span>,</span>
<span class="line" id="L105"> maximum = <span class="tok-number">3</span>,</span>
<span class="line" id="L106">};</span>
<span class="line" id="L107"></span>
<span class="line" id="L108"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> CompressStreamOptions = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L109"> level: CompressionLevel = .default,</span>
<span class="line" id="L110">};</span>
<span class="line" id="L111"></span>
<span class="line" id="L112"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">CompressStream</span>(<span class="tok-kw">comptime</span> WriterType: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L113"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L114"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L115"></span>
<span class="line" id="L116"> <span class="tok-kw">const</span> Error = WriterType.Error ||</span>
<span class="line" id="L117"> deflate.Compressor(WriterType).Error;</span>
<span class="line" id="L118"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Writer = io.Writer(*Self, Error, write);</span>
<span class="line" id="L119"></span>
<span class="line" id="L120"> allocator: mem.Allocator,</span>
<span class="line" id="L121"> deflator: deflate.Compressor(WriterType),</span>
<span class="line" id="L122"> in_writer: WriterType,</span>
<span class="line" id="L123"> hasher: std.hash.Adler32,</span>
<span class="line" id="L124"></span>
<span class="line" id="L125"> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(allocator: mem.Allocator, dest: WriterType, options: CompressStreamOptions) !Self {</span>
<span class="line" id="L126"> <span class="tok-kw">var</span> header = ZLibHeader{</span>
<span class="line" id="L127"> .compression_info = ZLibHeader.WINDOW_32K,</span>
<span class="line" id="L128"> .compression_method = ZLibHeader.DEFLATE,</span>
<span class="line" id="L129"> .compression_level = <span class="tok-builtin">@intFromEnum</span>(options.level),</span>
<span class="line" id="L130"> .preset_dict = <span class="tok-number">0</span>,</span>
<span class="line" id="L131"> .checksum = <span class="tok-number">0</span>,</span>
<span class="line" id="L132"> };</span>
<span class="line" id="L133"> header.checksum = <span class="tok-builtin">@as</span>(<span class="tok-type">u5</span>, <span class="tok-builtin">@truncate</span>(<span class="tok-number">31</span> - <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@bitCast</span>(header)) % <span class="tok-number">31</span>));</span>
<span class="line" id="L134"></span>
<span class="line" id="L135"> <span class="tok-kw">try</span> dest.writeIntBig(<span class="tok-type">u16</span>, <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@bitCast</span>(header)));</span>
<span class="line" id="L136"></span>
<span class="line" id="L137"> <span class="tok-kw">const</span> compression_level: deflate.Compression = <span class="tok-kw">switch</span> (options.level) {</span>
<span class="line" id="L138"> .no_compression => .no_compression,</span>
<span class="line" id="L139"> .fastest => .best_speed,</span>
<span class="line" id="L140"> .default => .default_compression,</span>
<span class="line" id="L141"> .maximum => .best_compression,</span>
<span class="line" id="L142"> };</span>
<span class="line" id="L143"></span>
<span class="line" id="L144"> <span class="tok-kw">return</span> Self{</span>
<span class="line" id="L145"> .allocator = allocator,</span>
<span class="line" id="L146"> .deflator = <span class="tok-kw">try</span> deflate.compressor(allocator, dest, .{ .level = compression_level }),</span>
<span class="line" id="L147"> .in_writer = dest,</span>
<span class="line" id="L148"> .hasher = std.hash.Adler32.init(),</span>
<span class="line" id="L149"> };</span>
<span class="line" id="L150"> }</span>
<span class="line" id="L151"></span>
<span class="line" id="L152"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">write</span>(self: *Self, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) Error!<span class="tok-type">usize</span> {</span>
<span class="line" id="L153"> <span class="tok-kw">if</span> (bytes.len == <span class="tok-number">0</span>) {</span>
<span class="line" id="L154"> <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L155"> }</span>
<span class="line" id="L156"></span>
<span class="line" id="L157"> <span class="tok-kw">const</span> w = <span class="tok-kw">try</span> self.deflator.write(bytes);</span>
<span class="line" id="L158"></span>
<span class="line" id="L159"> self.hasher.update(bytes[<span class="tok-number">0</span>..w]);</span>
<span class="line" id="L160"> <span class="tok-kw">return</span> w;</span>
<span class="line" id="L161"> }</span>
<span class="line" id="L162"></span>
<span class="line" id="L163"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">writer</span>(self: *Self) Writer {</span>
<span class="line" id="L164"> <span class="tok-kw">return</span> .{ .context = self };</span>
<span class="line" id="L165"> }</span>
<span class="line" id="L166"></span>
<span class="line" id="L167"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *Self) <span class="tok-type">void</span> {</span>
<span class="line" id="L168"> self.deflator.deinit();</span>
<span class="line" id="L169"> }</span>
<span class="line" id="L170"></span>
<span class="line" id="L171"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">finish</span>(self: *Self) !<span class="tok-type">void</span> {</span>
<span class="line" id="L172"> <span class="tok-kw">const</span> hash = self.hasher.final();</span>
<span class="line" id="L173"> <span class="tok-kw">try</span> self.deflator.close();</span>
<span class="line" id="L174"> <span class="tok-kw">try</span> self.in_writer.writeIntBig(<span class="tok-type">u32</span>, hash);</span>
<span class="line" id="L175"> }</span>
<span class="line" id="L176"> };</span>
<span class="line" id="L177">}</span>
<span class="line" id="L178"></span>
<span class="line" id="L179"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">compressStream</span>(allocator: mem.Allocator, writer: <span class="tok-kw">anytype</span>, options: CompressStreamOptions) !CompressStream(<span class="tok-builtin">@TypeOf</span>(writer)) {</span>
<span class="line" id="L180"> <span class="tok-kw">return</span> CompressStream(<span class="tok-builtin">@TypeOf</span>(writer)).init(allocator, writer, options);</span>
<span class="line" id="L181">}</span>
<span class="line" id="L182"></span>
<span class="line" id="L183"><span class="tok-kw">fn</span> <span class="tok-fn">testDecompress</span>(data: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, expected: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L184"> <span class="tok-kw">var</span> in_stream = io.fixedBufferStream(data);</span>
<span class="line" id="L185"></span>
<span class="line" id="L186"> <span class="tok-kw">var</span> zlib_stream = <span class="tok-kw">try</span> decompressStream(testing.allocator, in_stream.reader());</span>
<span class="line" id="L187"> <span class="tok-kw">defer</span> zlib_stream.deinit();</span>
<span class="line" id="L188"></span>
<span class="line" id="L189"> <span class="tok-comment">// Read and decompress the whole file</span>
</span>
<span class="line" id="L190"> <span class="tok-kw">const</span> buf = <span class="tok-kw">try</span> zlib_stream.reader().readAllAlloc(testing.allocator, std.math.maxInt(<span class="tok-type">usize</span>));</span>
<span class="line" id="L191"> <span class="tok-kw">defer</span> testing.allocator.free(buf);</span>
<span class="line" id="L192"></span>
<span class="line" id="L193"> <span class="tok-comment">// Check against the reference</span>
</span>
<span class="line" id="L194"> <span class="tok-kw">try</span> testing.expectEqualSlices(<span class="tok-type">u8</span>, expected, buf);</span>
<span class="line" id="L195">}</span>
<span class="line" id="L196"></span>
<span class="line" id="L197"><span class="tok-comment">// All the test cases are obtained by compressing the RFC1951 text</span>
</span>
<span class="line" id="L198"><span class="tok-comment">//</span>
</span>
<span class="line" id="L199"><span class="tok-comment">// https://tools.ietf.org/rfc/rfc1951.txt length=36944 bytes</span>
</span>
<span class="line" id="L200"><span class="tok-comment">// SHA256=5ebf4b5b7fe1c3a0c0ab9aa3ac8c0f3853a7dc484905e76e03b0b0f301350009</span>
</span>
<span class="line" id="L201"><span class="tok-kw">test</span> <span class="tok-str">"compressed data"</span> {</span>
<span class="line" id="L202"> <span class="tok-kw">const</span> rfc1951_txt = <span class="tok-builtin">@embedFile</span>(<span class="tok-str">"testdata/rfc1951.txt"</span>);</span>
<span class="line" id="L203"></span>
<span class="line" id="L204"> <span class="tok-comment">// Compressed with compression level = 0</span>
</span>
<span class="line" id="L205"> <span class="tok-kw">try</span> testDecompress(</span>
<span class="line" id="L206"> <span class="tok-builtin">@embedFile</span>(<span class="tok-str">"testdata/rfc1951.txt.z.0"</span>),</span>
<span class="line" id="L207"> rfc1951_txt,</span>
<span class="line" id="L208"> );</span>
<span class="line" id="L209"> <span class="tok-comment">// Compressed with compression level = 9</span>
</span>
<span class="line" id="L210"> <span class="tok-kw">try</span> testDecompress(</span>
<span class="line" id="L211"> <span class="tok-builtin">@embedFile</span>(<span class="tok-str">"testdata/rfc1951.txt.z.9"</span>),</span>
<span class="line" id="L212"> rfc1951_txt,</span>
<span class="line" id="L213"> );</span>
<span class="line" id="L214"> <span class="tok-comment">// Compressed with compression level = 9 and fixed Huffman codes</span>
</span>
<span class="line" id="L215"> <span class="tok-kw">try</span> testDecompress(</span>
<span class="line" id="L216"> <span class="tok-builtin">@embedFile</span>(<span class="tok-str">"testdata/rfc1951.txt.fixed.z.9"</span>),</span>
<span class="line" id="L217"> rfc1951_txt,</span>
<span class="line" id="L218"> );</span>
<span class="line" id="L219">}</span>
<span class="line" id="L220"></span>
<span class="line" id="L221"><span class="tok-kw">test</span> <span class="tok-str">"don't read past deflate stream's end"</span> {</span>
<span class="line" id="L222"> <span class="tok-kw">try</span> testDecompress(&[_]<span class="tok-type">u8</span>{</span>
<span class="line" id="L223"> <span class="tok-number">0x08</span>, <span class="tok-number">0xd7</span>, <span class="tok-number">0x63</span>, <span class="tok-number">0xf8</span>, <span class="tok-number">0xcf</span>, <span class="tok-number">0xc0</span>, <span class="tok-number">0xc0</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0xc1</span>, <span class="tok-number">0xff</span>,</span>
<span class="line" id="L224"> <span class="tok-number">0xff</span>, <span class="tok-number">0x43</span>, <span class="tok-number">0x30</span>, <span class="tok-number">0x03</span>, <span class="tok-number">0x03</span>, <span class="tok-number">0xc3</span>, <span class="tok-number">0xff</span>, <span class="tok-number">0xff</span>, <span class="tok-number">0xff</span>, <span class="tok-number">0x01</span>,</span>
<span class="line" id="L225"> <span class="tok-number">0x83</span>, <span class="tok-number">0x95</span>, <span class="tok-number">0x0b</span>, <span class="tok-number">0xf5</span>,</span>
<span class="line" id="L226"> }, &[_]<span class="tok-type">u8</span>{</span>
<span class="line" id="L227"> <span class="tok-number">0x00</span>, <span class="tok-number">0xff</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0xff</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0xff</span>,</span>
<span class="line" id="L228"> <span class="tok-number">0x00</span>, <span class="tok-number">0xff</span>, <span class="tok-number">0xff</span>, <span class="tok-number">0xff</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0xff</span>, <span class="tok-number">0xff</span>, <span class="tok-number">0xff</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>,</span>
<span class="line" id="L229"> <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0xff</span>, <span class="tok-number">0xff</span>, <span class="tok-number">0xff</span>,</span>
<span class="line" id="L230"> });</span>
<span class="line" id="L231">}</span>
<span class="line" id="L232"></span>
<span class="line" id="L233"><span class="tok-kw">test</span> <span class="tok-str">"sanity checks"</span> {</span>
<span class="line" id="L234"> <span class="tok-comment">// Truncated header</span>
</span>
<span class="line" id="L235"> <span class="tok-kw">try</span> testing.expectError(</span>
<span class="line" id="L236"> <span class="tok-kw">error</span>.EndOfStream,</span>
<span class="line" id="L237"> testDecompress(&[_]<span class="tok-type">u8</span>{<span class="tok-number">0x78</span>}, <span class="tok-str">""</span>),</span>
<span class="line" id="L238"> );</span>
<span class="line" id="L239"> <span class="tok-comment">// Failed FCHECK check</span>
</span>
<span class="line" id="L240"> <span class="tok-kw">try</span> testing.expectError(</span>
<span class="line" id="L241"> <span class="tok-kw">error</span>.BadHeader,</span>
<span class="line" id="L242"> testDecompress(&[_]<span class="tok-type">u8</span>{ <span class="tok-number">0x78</span>, <span class="tok-number">0x9D</span> }, <span class="tok-str">""</span>),</span>
<span class="line" id="L243"> );</span>
<span class="line" id="L244"> <span class="tok-comment">// Wrong CM</span>
</span>
<span class="line" id="L245"> <span class="tok-kw">try</span> testing.expectError(</span>
<span class="line" id="L246"> <span class="tok-kw">error</span>.InvalidCompression,</span>
<span class="line" id="L247"> testDecompress(&[_]<span class="tok-type">u8</span>{ <span class="tok-number">0x79</span>, <span class="tok-number">0x94</span> }, <span class="tok-str">""</span>),</span>
<span class="line" id="L248"> );</span>
<span class="line" id="L249"> <span class="tok-comment">// Wrong CINFO</span>
</span>
<span class="line" id="L250"> <span class="tok-kw">try</span> testing.expectError(</span>
<span class="line" id="L251"> <span class="tok-kw">error</span>.InvalidWindowSize,</span>
<span class="line" id="L252"> testDecompress(&[_]<span class="tok-type">u8</span>{ <span class="tok-number">0x88</span>, <span class="tok-number">0x98</span> }, <span class="tok-str">""</span>),</span>
<span class="line" id="L253"> );</span>
<span class="line" id="L254"> <span class="tok-comment">// Wrong checksum</span>
</span>
<span class="line" id="L255"> <span class="tok-kw">try</span> testing.expectError(</span>
<span class="line" id="L256"> <span class="tok-kw">error</span>.WrongChecksum,</span>
<span class="line" id="L257"> testDecompress(&[_]<span class="tok-type">u8</span>{ <span class="tok-number">0x78</span>, <span class="tok-number">0xda</span>, <span class="tok-number">0x03</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span> }, <span class="tok-str">""</span>),</span>
<span class="line" id="L258"> );</span>
<span class="line" id="L259"> <span class="tok-comment">// Truncated checksum</span>
</span>
<span class="line" id="L260"> <span class="tok-kw">try</span> testing.expectError(</span>
<span class="line" id="L261"> <span class="tok-kw">error</span>.EndOfStream,</span>
<span class="line" id="L262"> testDecompress(&[_]<span class="tok-type">u8</span>{ <span class="tok-number">0x78</span>, <span class="tok-number">0xda</span>, <span class="tok-number">0x03</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span> }, <span class="tok-str">""</span>),</span>
<span class="line" id="L263"> );</span>
<span class="line" id="L264">}</span>
<span class="line" id="L265"></span>
<span class="line" id="L266"><span class="tok-kw">test</span> <span class="tok-str">"compress data"</span> {</span>
<span class="line" id="L267"> <span class="tok-kw">const</span> allocator = testing.allocator;</span>
<span class="line" id="L268"> <span class="tok-kw">const</span> rfc1951_txt = <span class="tok-builtin">@embedFile</span>(<span class="tok-str">"testdata/rfc1951.txt"</span>);</span>
<span class="line" id="L269"></span>
<span class="line" id="L270"> <span class="tok-kw">for</span> (std.meta.tags(CompressionLevel)) |level| {</span>
<span class="line" id="L271"> <span class="tok-kw">var</span> compressed_data = std.ArrayList(<span class="tok-type">u8</span>).init(allocator);</span>
<span class="line" id="L272"> <span class="tok-kw">defer</span> compressed_data.deinit();</span>
<span class="line" id="L273"></span>
<span class="line" id="L274"> <span class="tok-kw">var</span> compressor = <span class="tok-kw">try</span> compressStream(allocator, compressed_data.writer(), .{ .level = level });</span>
<span class="line" id="L275"> <span class="tok-kw">defer</span> compressor.deinit();</span>
<span class="line" id="L276"></span>
<span class="line" id="L277"> <span class="tok-kw">try</span> compressor.writer().writeAll(rfc1951_txt);</span>
<span class="line" id="L278"> <span class="tok-kw">try</span> compressor.finish();</span>
<span class="line" id="L279"></span>
<span class="line" id="L280"> <span class="tok-kw">try</span> testDecompress(compressed_data.items, rfc1951_txt);</span>
<span class="line" id="L281"> }</span>
<span class="line" id="L282">}</span>
<span class="line" id="L283"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//! The deflate package is a translation of the Go code of the compress/flate package from</span></span>
<span class="line" id="L2"><span class="tok-comment">//! https://go.googlesource.com/go/+/refs/tags/go1.17/src/compress/flate/</span></span>
<span class="line" id="L3"></span>
<span class="line" id="L4"><span class="tok-kw">const</span> deflate = <span class="tok-builtin">@import</span>(<span class="tok-str">"deflate/compressor.zig"</span>);</span>
<span class="line" id="L5"><span class="tok-kw">const</span> inflate = <span class="tok-builtin">@import</span>(<span class="tok-str">"deflate/decompressor.zig"</span>);</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Compression = deflate.Compression;</span>
<span class="line" id="L8"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> CompressorOptions = deflate.CompressorOptions;</span>
<span class="line" id="L9"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Compressor = deflate.Compressor;</span>
<span class="line" id="L10"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Decompressor = inflate.Decompressor;</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> compressor = deflate.compressor;</span>
<span class="line" id="L13"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> decompressor = inflate.decompressor;</span>
<span class="line" id="L14"></span>
<span class="line" id="L15"><span class="tok-comment">/// Copies elements from a source `src` slice into a destination `dst` slice.</span></span>
<span class="line" id="L16"><span class="tok-comment">/// The copy never returns an error but might not be complete if the destination is too small.</span></span>
<span class="line" id="L17"><span class="tok-comment">/// Returns the number of elements copied, which will be the minimum of `src.len` and `dst.len`.</span></span>
<span class="line" id="L18"><span class="tok-comment">/// TODO: remove this smelly function</span></span>
<span class="line" id="L19"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">copy</span>(dst: []<span class="tok-type">u8</span>, src: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-type">usize</span> {</span>
<span class="line" id="L20"> <span class="tok-kw">if</span> (dst.len <= src.len) {</span>
<span class="line" id="L21"> <span class="tok-builtin">@memcpy</span>(dst, src[<span class="tok-number">0</span>..dst.len]);</span>
<span class="line" id="L22"> <span class="tok-kw">return</span> dst.len;</span>
<span class="line" id="L23"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L24"> <span class="tok-builtin">@memcpy</span>(dst[<span class="tok-number">0</span>..src.len], src);</span>
<span class="line" id="L25"> <span class="tok-kw">return</span> src.len;</span>
<span class="line" id="L26"> }</span>
<span class="line" id="L27">}</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"><span class="tok-kw">test</span> {</span>
<span class="line" id="L30"> _ = <span class="tok-builtin">@import</span>(<span class="tok-str">"deflate/token.zig"</span>);</span>
<span class="line" id="L31"> _ = <span class="tok-builtin">@import</span>(<span class="tok-str">"deflate/bits_utils.zig"</span>);</span>
<span class="line" id="L32"> _ = <span class="tok-builtin">@import</span>(<span class="tok-str">"deflate/dict_decoder.zig"</span>);</span>
<span class="line" id="L33"></span>
<span class="line" id="L34"> _ = <span class="tok-builtin">@import</span>(<span class="tok-str">"deflate/huffman_code.zig"</span>);</span>
<span class="line" id="L35"> _ = <span class="tok-builtin">@import</span>(<span class="tok-str">"deflate/huffman_bit_writer.zig"</span>);</span>
<span class="line" id="L36"></span>
<span class="line" id="L37"> _ = <span class="tok-builtin">@import</span>(<span class="tok-str">"deflate/compressor.zig"</span>);</span>
<span class="line" id="L38"> _ = <span class="tok-builtin">@import</span>(<span class="tok-str">"deflate/compressor_test.zig"</span>);</span>
<span class="line" id="L39"></span>
<span class="line" id="L40"> _ = <span class="tok-builtin">@import</span>(<span class="tok-str">"deflate/deflate_fast.zig"</span>);</span>
<span class="line" id="L41"> _ = <span class="tok-builtin">@import</span>(<span class="tok-str">"deflate/deflate_fast_test.zig"</span>);</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"> _ = <span class="tok-builtin">@import</span>(<span class="tok-str">"deflate/decompressor.zig"</span>);</span>
<span class="line" id="L44">}</span>
<span class="line" id="L45"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-comment">//</span>
</span>
<span class="line" id="L2"><span class="tok-comment">// Decompressor for GZIP data streams (RFC1952)</span>
</span>
<span class="line" id="L3"></span>
<span class="line" id="L4"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L5"><span class="tok-kw">const</span> io = std.io;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> fs = std.fs;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L9"><span class="tok-kw">const</span> deflate = std.compress.deflate;</span>
<span class="line" id="L10"></span>
<span class="line" id="L11"><span class="tok-comment">// Flags for the FLG field in the header</span>
</span>
<span class="line" id="L12"><span class="tok-kw">const</span> FTEXT = <span class="tok-number">1</span> << <span class="tok-number">0</span>;</span>
<span class="line" id="L13"><span class="tok-kw">const</span> FHCRC = <span class="tok-number">1</span> << <span class="tok-number">1</span>;</span>
<span class="line" id="L14"><span class="tok-kw">const</span> FEXTRA = <span class="tok-number">1</span> << <span class="tok-number">2</span>;</span>
<span class="line" id="L15"><span class="tok-kw">const</span> FNAME = <span class="tok-number">1</span> << <span class="tok-number">3</span>;</span>
<span class="line" id="L16"><span class="tok-kw">const</span> FCOMMENT = <span class="tok-number">1</span> << <span class="tok-number">4</span>;</span>
<span class="line" id="L17"></span>
<span class="line" id="L18"><span class="tok-kw">const</span> max_string_len = <span class="tok-number">1024</span>;</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">Decompress</span>(<span class="tok-kw">comptime</span> ReaderType: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L21"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L22"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L23"></span>
<span class="line" id="L24"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = ReaderType.Error ||</span>
<span class="line" id="L25"> deflate.Decompressor(ReaderType).Error ||</span>
<span class="line" id="L26"> <span class="tok-kw">error</span>{ CorruptedData, WrongChecksum };</span>
<span class="line" id="L27"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Reader = io.Reader(*Self, Error, read);</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"> allocator: mem.Allocator,</span>
<span class="line" id="L30"> inflater: deflate.Decompressor(ReaderType),</span>
<span class="line" id="L31"> in_reader: ReaderType,</span>
<span class="line" id="L32"> hasher: std.hash.Crc32,</span>
<span class="line" id="L33"> read_amt: <span class="tok-type">usize</span>,</span>
<span class="line" id="L34"></span>
<span class="line" id="L35"> info: <span class="tok-kw">struct</span> {</span>
<span class="line" id="L36"> extra: ?[]<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L37"> filename: ?[]<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L38"> comment: ?[]<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L39"> modification_time: <span class="tok-type">u32</span>,</span>
<span class="line" id="L40"> operating_system: <span class="tok-type">u8</span>,</span>
<span class="line" id="L41"> },</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(allocator: mem.Allocator, source: ReaderType) !Self {</span>
<span class="line" id="L44"> <span class="tok-kw">var</span> hasher = std.compress.hashedReader(source, std.hash.Crc32.init());</span>
<span class="line" id="L45"> <span class="tok-kw">const</span> hashed_reader = hasher.reader();</span>
<span class="line" id="L46"></span>
<span class="line" id="L47"> <span class="tok-comment">// gzip header format is specified in RFC1952</span>
</span>
<span class="line" id="L48"> <span class="tok-kw">const</span> header = <span class="tok-kw">try</span> hashed_reader.readBytesNoEof(<span class="tok-number">10</span>);</span>
<span class="line" id="L49"></span>
<span class="line" id="L50"> <span class="tok-comment">// Check the ID1/ID2 fields</span>
</span>
<span class="line" id="L51"> <span class="tok-kw">if</span> (header[<span class="tok-number">0</span>] != <span class="tok-number">0x1f</span> <span class="tok-kw">or</span> header[<span class="tok-number">1</span>] != <span class="tok-number">0x8b</span>)</span>
<span class="line" id="L52"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BadHeader;</span>
<span class="line" id="L53"></span>
<span class="line" id="L54"> <span class="tok-kw">const</span> CM = header[<span class="tok-number">2</span>];</span>
<span class="line" id="L55"> <span class="tok-comment">// The CM field must be 8 to indicate the use of DEFLATE</span>
</span>
<span class="line" id="L56"> <span class="tok-kw">if</span> (CM != <span class="tok-number">8</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidCompression;</span>
<span class="line" id="L57"> <span class="tok-comment">// Flags</span>
</span>
<span class="line" id="L58"> <span class="tok-kw">const</span> FLG = header[<span class="tok-number">3</span>];</span>
<span class="line" id="L59"> <span class="tok-comment">// Modification time, as a Unix timestamp.</span>
</span>
<span class="line" id="L60"> <span class="tok-comment">// If zero there's no timestamp available.</span>
</span>
<span class="line" id="L61"> <span class="tok-kw">const</span> MTIME = mem.readIntLittle(<span class="tok-type">u32</span>, header[<span class="tok-number">4</span>..<span class="tok-number">8</span>]);</span>
<span class="line" id="L62"> <span class="tok-comment">// Extra flags</span>
</span>
<span class="line" id="L63"> <span class="tok-kw">const</span> XFL = header[<span class="tok-number">8</span>];</span>
<span class="line" id="L64"> <span class="tok-comment">// Operating system where the compression took place</span>
</span>
<span class="line" id="L65"> <span class="tok-kw">const</span> OS = header[<span class="tok-number">9</span>];</span>
<span class="line" id="L66"> _ = XFL;</span>
<span class="line" id="L67"></span>
<span class="line" id="L68"> <span class="tok-kw">const</span> extra = <span class="tok-kw">if</span> (FLG & FEXTRA != <span class="tok-number">0</span>) blk: {</span>
<span class="line" id="L69"> <span class="tok-kw">const</span> len = <span class="tok-kw">try</span> hashed_reader.readIntLittle(<span class="tok-type">u16</span>);</span>
<span class="line" id="L70"> <span class="tok-kw">const</span> tmp_buf = <span class="tok-kw">try</span> allocator.alloc(<span class="tok-type">u8</span>, len);</span>
<span class="line" id="L71"> <span class="tok-kw">errdefer</span> allocator.free(tmp_buf);</span>
<span class="line" id="L72"></span>
<span class="line" id="L73"> <span class="tok-kw">try</span> hashed_reader.readNoEof(tmp_buf);</span>
<span class="line" id="L74"> <span class="tok-kw">break</span> :blk tmp_buf;</span>
<span class="line" id="L75"> } <span class="tok-kw">else</span> <span class="tok-null">null</span>;</span>
<span class="line" id="L76"> <span class="tok-kw">errdefer</span> <span class="tok-kw">if</span> (extra) |p| allocator.free(p);</span>
<span class="line" id="L77"></span>
<span class="line" id="L78"> <span class="tok-kw">const</span> filename = <span class="tok-kw">if</span> (FLG & FNAME != <span class="tok-number">0</span>)</span>
<span class="line" id="L79"> <span class="tok-kw">try</span> hashed_reader.readUntilDelimiterAlloc(allocator, <span class="tok-number">0</span>, max_string_len)</span>
<span class="line" id="L80"> <span class="tok-kw">else</span></span>
<span class="line" id="L81"> <span class="tok-null">null</span>;</span>
<span class="line" id="L82"> <span class="tok-kw">errdefer</span> <span class="tok-kw">if</span> (filename) |p| allocator.free(p);</span>
<span class="line" id="L83"></span>
<span class="line" id="L84"> <span class="tok-kw">const</span> comment = <span class="tok-kw">if</span> (FLG & FCOMMENT != <span class="tok-number">0</span>)</span>
<span class="line" id="L85"> <span class="tok-kw">try</span> hashed_reader.readUntilDelimiterAlloc(allocator, <span class="tok-number">0</span>, max_string_len)</span>
<span class="line" id="L86"> <span class="tok-kw">else</span></span>
<span class="line" id="L87"> <span class="tok-null">null</span>;</span>
<span class="line" id="L88"> <span class="tok-kw">errdefer</span> <span class="tok-kw">if</span> (comment) |p| allocator.free(p);</span>
<span class="line" id="L89"></span>
<span class="line" id="L90"> <span class="tok-kw">if</span> (FLG & FHCRC != <span class="tok-number">0</span>) {</span>
<span class="line" id="L91"> <span class="tok-kw">const</span> hash = <span class="tok-kw">try</span> source.readIntLittle(<span class="tok-type">u16</span>);</span>
<span class="line" id="L92"> <span class="tok-kw">if</span> (hash != <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@truncate</span>(hasher.hasher.final())))</span>
<span class="line" id="L93"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.WrongChecksum;</span>
<span class="line" id="L94"> }</span>
<span class="line" id="L95"></span>
<span class="line" id="L96"> <span class="tok-kw">return</span> Self{</span>
<span class="line" id="L97"> .allocator = allocator,</span>
<span class="line" id="L98"> .inflater = <span class="tok-kw">try</span> deflate.decompressor(allocator, source, <span class="tok-null">null</span>),</span>
<span class="line" id="L99"> .in_reader = source,</span>
<span class="line" id="L100"> .hasher = std.hash.Crc32.init(),</span>
<span class="line" id="L101"> .info = .{</span>
<span class="line" id="L102"> .filename = filename,</span>
<span class="line" id="L103"> .comment = comment,</span>
<span class="line" id="L104"> .extra = extra,</span>
<span class="line" id="L105"> .modification_time = MTIME,</span>
<span class="line" id="L106"> .operating_system = OS,</span>
<span class="line" id="L107"> },</span>
<span class="line" id="L108"> .read_amt = <span class="tok-number">0</span>,</span>
<span class="line" id="L109"> };</span>
<span class="line" id="L110"> }</span>
<span class="line" id="L111"></span>
<span class="line" id="L112"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *Self) <span class="tok-type">void</span> {</span>
<span class="line" id="L113"> self.inflater.deinit();</span>
<span class="line" id="L114"> <span class="tok-kw">if</span> (self.info.extra) |extra|</span>
<span class="line" id="L115"> self.allocator.free(extra);</span>
<span class="line" id="L116"> <span class="tok-kw">if</span> (self.info.filename) |filename|</span>
<span class="line" id="L117"> self.allocator.free(filename);</span>
<span class="line" id="L118"> <span class="tok-kw">if</span> (self.info.comment) |comment|</span>
<span class="line" id="L119"> self.allocator.free(comment);</span>
<span class="line" id="L120"> }</span>
<span class="line" id="L121"></span>
<span class="line" id="L122"> <span class="tok-comment">// Implements the io.Reader interface</span>
</span>
<span class="line" id="L123"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">read</span>(self: *Self, buffer: []<span class="tok-type">u8</span>) Error!<span class="tok-type">usize</span> {</span>
<span class="line" id="L124"> <span class="tok-kw">if</span> (buffer.len == <span class="tok-number">0</span>)</span>
<span class="line" id="L125"> <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L126"></span>
<span class="line" id="L127"> <span class="tok-comment">// Read from the compressed stream and update the computed checksum</span>
</span>
<span class="line" id="L128"> <span class="tok-kw">const</span> r = <span class="tok-kw">try</span> self.inflater.read(buffer);</span>
<span class="line" id="L129"> <span class="tok-kw">if</span> (r != <span class="tok-number">0</span>) {</span>
<span class="line" id="L130"> self.hasher.update(buffer[<span class="tok-number">0</span>..r]);</span>
<span class="line" id="L131"> self.read_amt += r;</span>
<span class="line" id="L132"> <span class="tok-kw">return</span> r;</span>
<span class="line" id="L133"> }</span>
<span class="line" id="L134"></span>
<span class="line" id="L135"> <span class="tok-comment">// We've reached the end of stream, check if the checksum matches</span>
</span>
<span class="line" id="L136"> <span class="tok-kw">const</span> hash = <span class="tok-kw">try</span> self.in_reader.readIntLittle(<span class="tok-type">u32</span>);</span>
<span class="line" id="L137"> <span class="tok-kw">if</span> (hash != self.hasher.final())</span>
<span class="line" id="L138"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.WrongChecksum;</span>
<span class="line" id="L139"></span>
<span class="line" id="L140"> <span class="tok-comment">// The ISIZE field is the size of the uncompressed input modulo 2^32</span>
</span>
<span class="line" id="L141"> <span class="tok-kw">const</span> input_size = <span class="tok-kw">try</span> self.in_reader.readIntLittle(<span class="tok-type">u32</span>);</span>
<span class="line" id="L142"> <span class="tok-kw">if</span> (self.read_amt & <span class="tok-number">0xffffffff</span> != input_size)</span>
<span class="line" id="L143"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptedData;</span>
<span class="line" id="L144"></span>
<span class="line" id="L145"> <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L146"> }</span>
<span class="line" id="L147"></span>
<span class="line" id="L148"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reader</span>(self: *Self) Reader {</span>
<span class="line" id="L149"> <span class="tok-kw">return</span> .{ .context = self };</span>
<span class="line" id="L150"> }</span>
<span class="line" id="L151"> };</span>
<span class="line" id="L152">}</span>
<span class="line" id="L153"></span>
<span class="line" id="L154"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decompress</span>(allocator: mem.Allocator, reader: <span class="tok-kw">anytype</span>) !Decompress(<span class="tok-builtin">@TypeOf</span>(reader)) {</span>
<span class="line" id="L155"> <span class="tok-kw">return</span> Decompress(<span class="tok-builtin">@TypeOf</span>(reader)).init(allocator, reader);</span>
<span class="line" id="L156">}</span>
<span class="line" id="L157"></span>
<span class="line" id="L158"><span class="tok-kw">fn</span> <span class="tok-fn">testReader</span>(data: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, <span class="tok-kw">comptime</span> expected: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L159"> <span class="tok-kw">var</span> in_stream = io.fixedBufferStream(data);</span>
<span class="line" id="L160"></span>
<span class="line" id="L161"> <span class="tok-kw">var</span> gzip_stream = <span class="tok-kw">try</span> decompress(testing.allocator, in_stream.reader());</span>
<span class="line" id="L162"> <span class="tok-kw">defer</span> gzip_stream.deinit();</span>
<span class="line" id="L163"></span>
<span class="line" id="L164"> <span class="tok-comment">// Read and decompress the whole file</span>
</span>
<span class="line" id="L165"> <span class="tok-kw">const</span> buf = <span class="tok-kw">try</span> gzip_stream.reader().readAllAlloc(testing.allocator, std.math.maxInt(<span class="tok-type">usize</span>));</span>
<span class="line" id="L166"> <span class="tok-kw">defer</span> testing.allocator.free(buf);</span>
<span class="line" id="L167"></span>
<span class="line" id="L168"> <span class="tok-comment">// Check against the reference</span>
</span>
<span class="line" id="L169"> <span class="tok-kw">try</span> testing.expectEqualSlices(<span class="tok-type">u8</span>, expected, buf);</span>
<span class="line" id="L170">}</span>
<span class="line" id="L171"></span>
<span class="line" id="L172"><span class="tok-comment">// All the test cases are obtained by compressing the RFC1952 text</span>
</span>
<span class="line" id="L173"><span class="tok-comment">//</span>
</span>
<span class="line" id="L174"><span class="tok-comment">// https://tools.ietf.org/rfc/rfc1952.txt length=25037 bytes</span>
</span>
<span class="line" id="L175"><span class="tok-comment">// SHA256=164ef0897b4cbec63abf1b57f069f3599bd0fb7c72c2a4dee21bd7e03ec9af67</span>
</span>
<span class="line" id="L176"><span class="tok-kw">test</span> <span class="tok-str">"compressed data"</span> {</span>
<span class="line" id="L177"> <span class="tok-kw">try</span> testReader(</span>
<span class="line" id="L178"> <span class="tok-builtin">@embedFile</span>(<span class="tok-str">"testdata/rfc1952.txt.gz"</span>),</span>
<span class="line" id="L179"> <span class="tok-builtin">@embedFile</span>(<span class="tok-str">"testdata/rfc1952.txt"</span>),</span>
<span class="line" id="L180"> );</span>
<span class="line" id="L181">}</span>
<span class="line" id="L182"></span>
<span class="line" id="L183"><span class="tok-kw">test</span> <span class="tok-str">"sanity checks"</span> {</span>
<span class="line" id="L184"> <span class="tok-comment">// Truncated header</span>
</span>
<span class="line" id="L185"> <span class="tok-kw">try</span> testing.expectError(</span>
<span class="line" id="L186"> <span class="tok-kw">error</span>.EndOfStream,</span>
<span class="line" id="L187"> testReader(&[_]<span class="tok-type">u8</span>{ <span class="tok-number">0x1f</span>, <span class="tok-number">0x8B</span> }, <span class="tok-str">""</span>),</span>
<span class="line" id="L188"> );</span>
<span class="line" id="L189"> <span class="tok-comment">// Wrong CM</span>
</span>
<span class="line" id="L190"> <span class="tok-kw">try</span> testing.expectError(</span>
<span class="line" id="L191"> <span class="tok-kw">error</span>.InvalidCompression,</span>
<span class="line" id="L192"> testReader(&[_]<span class="tok-type">u8</span>{</span>
<span class="line" id="L193"> <span class="tok-number">0x1f</span>, <span class="tok-number">0x8b</span>, <span class="tok-number">0x09</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>,</span>
<span class="line" id="L194"> <span class="tok-number">0x00</span>, <span class="tok-number">0x03</span>,</span>
<span class="line" id="L195"> }, <span class="tok-str">""</span>),</span>
<span class="line" id="L196"> );</span>
<span class="line" id="L197"> <span class="tok-comment">// Wrong checksum</span>
</span>
<span class="line" id="L198"> <span class="tok-kw">try</span> testing.expectError(</span>
<span class="line" id="L199"> <span class="tok-kw">error</span>.WrongChecksum,</span>
<span class="line" id="L200"> testReader(&[_]<span class="tok-type">u8</span>{</span>
<span class="line" id="L201"> <span class="tok-number">0x1f</span>, <span class="tok-number">0x8b</span>, <span class="tok-number">0x08</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>,</span>
<span class="line" id="L202"> <span class="tok-number">0x00</span>, <span class="tok-number">0x03</span>, <span class="tok-number">0x03</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x01</span>,</span>
<span class="line" id="L203"> <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>,</span>
<span class="line" id="L204"> }, <span class="tok-str">""</span>),</span>
<span class="line" id="L205"> );</span>
<span class="line" id="L206"> <span class="tok-comment">// Truncated checksum</span>
</span>
<span class="line" id="L207"> <span class="tok-kw">try</span> testing.expectError(</span>
<span class="line" id="L208"> <span class="tok-kw">error</span>.EndOfStream,</span>
<span class="line" id="L209"> testReader(&[_]<span class="tok-type">u8</span>{</span>
<span class="line" id="L210"> <span class="tok-number">0x1f</span>, <span class="tok-number">0x8b</span>, <span class="tok-number">0x08</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>,</span>
<span class="line" id="L211"> <span class="tok-number">0x00</span>, <span class="tok-number">0x03</span>, <span class="tok-number">0x03</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>,</span>
<span class="line" id="L212"> }, <span class="tok-str">""</span>),</span>
<span class="line" id="L213"> );</span>
<span class="line" id="L214"> <span class="tok-comment">// Wrong initial size</span>
</span>
<span class="line" id="L215"> <span class="tok-kw">try</span> testing.expectError(</span>
<span class="line" id="L216"> <span class="tok-kw">error</span>.CorruptedData,</span>
<span class="line" id="L217"> testReader(&[_]<span class="tok-type">u8</span>{</span>
<span class="line" id="L218"> <span class="tok-number">0x1f</span>, <span class="tok-number">0x8b</span>, <span class="tok-number">0x08</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>,</span>
<span class="line" id="L219"> <span class="tok-number">0x00</span>, <span class="tok-number">0x03</span>, <span class="tok-number">0x03</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>,</span>
<span class="line" id="L220"> <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x01</span>,</span>
<span class="line" id="L221"> }, <span class="tok-str">""</span>),</span>
<span class="line" id="L222"> );</span>
<span class="line" id="L223"> <span class="tok-comment">// Truncated initial size field</span>
</span>
<span class="line" id="L224"> <span class="tok-kw">try</span> testing.expectError(</span>
<span class="line" id="L225"> <span class="tok-kw">error</span>.EndOfStream,</span>
<span class="line" id="L226"> testReader(&[_]<span class="tok-type">u8</span>{</span>
<span class="line" id="L227"> <span class="tok-number">0x1f</span>, <span class="tok-number">0x8b</span>, <span class="tok-number">0x08</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>,</span>
<span class="line" id="L228"> <span class="tok-number">0x00</span>, <span class="tok-number">0x03</span>, <span class="tok-number">0x03</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>,</span>
<span class="line" id="L229"> <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>,</span>
<span class="line" id="L230"> }, <span class="tok-str">""</span>),</span>
<span class="line" id="L231"> );</span>
<span class="line" id="L232">}</span>
<span class="line" id="L233"></span>
<span class="line" id="L234"><span class="tok-kw">test</span> <span class="tok-str">"header checksum"</span> {</span>
<span class="line" id="L235"> <span class="tok-kw">try</span> testReader(&[_]<span class="tok-type">u8</span>{</span>
<span class="line" id="L236"> <span class="tok-comment">// GZIP header</span>
</span>
<span class="line" id="L237"> <span class="tok-number">0x1f</span>, <span class="tok-number">0x8b</span>, <span class="tok-number">0x08</span>, <span class="tok-number">0x12</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x09</span>, <span class="tok-number">0x6e</span>, <span class="tok-number">0x88</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0xff</span>, <span class="tok-number">0x48</span>, <span class="tok-number">0x65</span>, <span class="tok-number">0x6c</span>, <span class="tok-number">0x6c</span>, <span class="tok-number">0x6f</span>, <span class="tok-number">0x00</span>,</span>
<span class="line" id="L238"></span>
<span class="line" id="L239"> <span class="tok-comment">// header.FHCRC (should cover entire header)</span>
</span>
<span class="line" id="L240"> <span class="tok-number">0x99</span>, <span class="tok-number">0xd6</span>,</span>
<span class="line" id="L241"></span>
<span class="line" id="L242"> <span class="tok-comment">// GZIP data</span>
</span>
<span class="line" id="L243"> <span class="tok-number">0x01</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0xff</span>, <span class="tok-number">0xff</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x00</span>,</span>
<span class="line" id="L244"> }, <span class="tok-str">""</span>);</span>
<span class="line" id="L245">}</span>
<span class="line" id="L246"></span>
</code></pre></body>
</html> |
0 | repos/yazap/docs/src/std | repos/yazap/docs/src/std/compress/lzma2.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L3"></span>
<span class="line" id="L4"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> decode = <span class="tok-builtin">@import</span>(<span class="tok-str">"lzma2/decode.zig"</span>);</span>
<span class="line" id="L5"></span>
<span class="line" id="L6"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decompress</span>(</span>
<span class="line" id="L7"> allocator: Allocator,</span>
<span class="line" id="L8"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L9"> writer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L10">) !<span class="tok-type">void</span> {</span>
<span class="line" id="L11"> <span class="tok-kw">var</span> decoder = <span class="tok-kw">try</span> decode.Decoder.init(allocator);</span>
<span class="line" id="L12"> <span class="tok-kw">defer</span> decoder.deinit(allocator);</span>
<span class="line" id="L13"> <span class="tok-kw">return</span> decoder.decompress(allocator, reader, writer);</span>
<span class="line" id="L14">}</span>
<span class="line" id="L15"></span>
<span class="line" id="L16"><span class="tok-kw">test</span> {</span>
<span class="line" id="L17"> <span class="tok-kw">const</span> expected = <span class="tok-str">"Hello\nWorld!\n"</span>;</span>
<span class="line" id="L18"> <span class="tok-kw">const</span> compressed = &[_]<span class="tok-type">u8</span>{ <span class="tok-number">0x01</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x05</span>, <span class="tok-number">0x48</span>, <span class="tok-number">0x65</span>, <span class="tok-number">0x6C</span>, <span class="tok-number">0x6C</span>, <span class="tok-number">0x6F</span>, <span class="tok-number">0x0A</span>, <span class="tok-number">0x02</span>, <span class="tok-number">0x00</span>, <span class="tok-number">0x06</span>, <span class="tok-number">0x57</span>, <span class="tok-number">0x6F</span>, <span class="tok-number">0x72</span>, <span class="tok-number">0x6C</span>, <span class="tok-number">0x64</span>, <span class="tok-number">0x21</span>, <span class="tok-number">0x0A</span>, <span class="tok-number">0x00</span> };</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"> <span class="tok-kw">const</span> allocator = std.testing.allocator;</span>
<span class="line" id="L21"> <span class="tok-kw">var</span> decomp = std.ArrayList(<span class="tok-type">u8</span>).init(allocator);</span>
<span class="line" id="L22"> <span class="tok-kw">defer</span> decomp.deinit();</span>
<span class="line" id="L23"> <span class="tok-kw">var</span> stream = std.io.fixedBufferStream(compressed);</span>
<span class="line" id="L24"> <span class="tok-kw">try</span> decompress(allocator, stream.reader(), decomp.writer());</span>
<span class="line" id="L25"> <span class="tok-kw">try</span> std.testing.expectEqualSlices(<span class="tok-type">u8</span>, expected, decomp.items);</span>
<span class="line" id="L26">}</span>
<span class="line" id="L27"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/compress | repos/yazap/docs/src/std/compress/xz/block.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> lzma2 = std.compress.lzma2;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> ArrayListUnmanaged = std.ArrayListUnmanaged;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> Crc32 = std.hash.Crc32;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> Crc64 = std.hash.crc.Crc64Xz;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> Sha256 = std.crypto.hash.sha2.Sha256;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> xz = std.compress.xz;</span>
<span class="line" id="L9"></span>
<span class="line" id="L10"><span class="tok-kw">const</span> DecodeError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L11"> CorruptInput,</span>
<span class="line" id="L12"> EndOfStream,</span>
<span class="line" id="L13"> EndOfStreamWithNoError,</span>
<span class="line" id="L14"> WrongChecksum,</span>
<span class="line" id="L15"> Unsupported,</span>
<span class="line" id="L16"> Overflow,</span>
<span class="line" id="L17">};</span>
<span class="line" id="L18"></span>
<span class="line" id="L19"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decoder</span>(allocator: Allocator, reader: <span class="tok-kw">anytype</span>, check: xz.Check) !Decoder(<span class="tok-builtin">@TypeOf</span>(reader)) {</span>
<span class="line" id="L20"> <span class="tok-kw">return</span> Decoder(<span class="tok-builtin">@TypeOf</span>(reader)).init(allocator, reader, check);</span>
<span class="line" id="L21">}</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">Decoder</span>(<span class="tok-kw">comptime</span> ReaderType: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L24"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L25"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L26"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error =</span>
<span class="line" id="L27"> ReaderType.Error ||</span>
<span class="line" id="L28"> DecodeError ||</span>
<span class="line" id="L29"> Allocator.Error;</span>
<span class="line" id="L30"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Reader = std.io.Reader(*Self, Error, read);</span>
<span class="line" id="L31"></span>
<span class="line" id="L32"> allocator: Allocator,</span>
<span class="line" id="L33"> inner_reader: ReaderType,</span>
<span class="line" id="L34"> check: xz.Check,</span>
<span class="line" id="L35"> err: ?Error,</span>
<span class="line" id="L36"> to_read: ArrayListUnmanaged(<span class="tok-type">u8</span>),</span>
<span class="line" id="L37"> block_count: <span class="tok-type">usize</span>,</span>
<span class="line" id="L38"></span>
<span class="line" id="L39"> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(allocator: Allocator, in_reader: ReaderType, check: xz.Check) !Self {</span>
<span class="line" id="L40"> <span class="tok-kw">return</span> Self{</span>
<span class="line" id="L41"> .allocator = allocator,</span>
<span class="line" id="L42"> .inner_reader = in_reader,</span>
<span class="line" id="L43"> .check = check,</span>
<span class="line" id="L44"> .err = <span class="tok-null">null</span>,</span>
<span class="line" id="L45"> .to_read = .{},</span>
<span class="line" id="L46"> .block_count = <span class="tok-number">0</span>,</span>
<span class="line" id="L47"> };</span>
<span class="line" id="L48"> }</span>
<span class="line" id="L49"></span>
<span class="line" id="L50"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *Self) <span class="tok-type">void</span> {</span>
<span class="line" id="L51"> self.to_read.deinit(self.allocator);</span>
<span class="line" id="L52"> }</span>
<span class="line" id="L53"></span>
<span class="line" id="L54"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reader</span>(self: *Self) Reader {</span>
<span class="line" id="L55"> <span class="tok-kw">return</span> .{ .context = self };</span>
<span class="line" id="L56"> }</span>
<span class="line" id="L57"></span>
<span class="line" id="L58"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">read</span>(self: *Self, output: []<span class="tok-type">u8</span>) Error!<span class="tok-type">usize</span> {</span>
<span class="line" id="L59"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L60"> <span class="tok-kw">if</span> (self.to_read.items.len > <span class="tok-number">0</span>) {</span>
<span class="line" id="L61"> <span class="tok-kw">const</span> input = self.to_read.items;</span>
<span class="line" id="L62"> <span class="tok-kw">const</span> n = <span class="tok-builtin">@min</span>(input.len, output.len);</span>
<span class="line" id="L63"> <span class="tok-builtin">@memcpy</span>(output[<span class="tok-number">0</span>..n], input[<span class="tok-number">0</span>..n]);</span>
<span class="line" id="L64"> std.mem.copyForwards(<span class="tok-type">u8</span>, input, input[n..]);</span>
<span class="line" id="L65"> self.to_read.shrinkRetainingCapacity(input.len - n);</span>
<span class="line" id="L66"> <span class="tok-kw">if</span> (self.to_read.items.len == <span class="tok-number">0</span> <span class="tok-kw">and</span> self.err != <span class="tok-null">null</span>) {</span>
<span class="line" id="L67"> <span class="tok-kw">if</span> (self.err.? == DecodeError.EndOfStreamWithNoError) {</span>
<span class="line" id="L68"> <span class="tok-kw">return</span> n;</span>
<span class="line" id="L69"> }</span>
<span class="line" id="L70"> <span class="tok-kw">return</span> self.err.?;</span>
<span class="line" id="L71"> }</span>
<span class="line" id="L72"> <span class="tok-kw">return</span> n;</span>
<span class="line" id="L73"> }</span>
<span class="line" id="L74"> <span class="tok-kw">if</span> (self.err != <span class="tok-null">null</span>) {</span>
<span class="line" id="L75"> <span class="tok-kw">if</span> (self.err.? == DecodeError.EndOfStreamWithNoError) {</span>
<span class="line" id="L76"> <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L77"> }</span>
<span class="line" id="L78"> <span class="tok-kw">return</span> self.err.?;</span>
<span class="line" id="L79"> }</span>
<span class="line" id="L80"> self.readBlock() <span class="tok-kw">catch</span> |e| {</span>
<span class="line" id="L81"> self.err = e;</span>
<span class="line" id="L82"> };</span>
<span class="line" id="L83"> }</span>
<span class="line" id="L84"> }</span>
<span class="line" id="L85"></span>
<span class="line" id="L86"> <span class="tok-kw">fn</span> <span class="tok-fn">readBlock</span>(self: *Self) Error!<span class="tok-type">void</span> {</span>
<span class="line" id="L87"> <span class="tok-kw">const</span> unpacked_pos = self.to_read.items.len;</span>
<span class="line" id="L88"></span>
<span class="line" id="L89"> <span class="tok-kw">var</span> block_counter = std.io.countingReader(self.inner_reader);</span>
<span class="line" id="L90"> <span class="tok-kw">const</span> block_reader = block_counter.reader();</span>
<span class="line" id="L91"></span>
<span class="line" id="L92"> <span class="tok-kw">var</span> packed_size: ?<span class="tok-type">u64</span> = <span class="tok-null">null</span>;</span>
<span class="line" id="L93"> <span class="tok-kw">var</span> unpacked_size: ?<span class="tok-type">u64</span> = <span class="tok-null">null</span>;</span>
<span class="line" id="L94"></span>
<span class="line" id="L95"> <span class="tok-comment">// Block Header</span>
</span>
<span class="line" id="L96"> {</span>
<span class="line" id="L97"> <span class="tok-kw">var</span> header_hasher = std.compress.hashedReader(block_reader, Crc32.init());</span>
<span class="line" id="L98"> <span class="tok-kw">const</span> header_reader = header_hasher.reader();</span>
<span class="line" id="L99"></span>
<span class="line" id="L100"> <span class="tok-kw">const</span> header_size = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-kw">try</span> header_reader.readByte()) * <span class="tok-number">4</span>;</span>
<span class="line" id="L101"> <span class="tok-kw">if</span> (header_size == <span class="tok-number">0</span>)</span>
<span class="line" id="L102"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.EndOfStreamWithNoError;</span>
<span class="line" id="L103"></span>
<span class="line" id="L104"> <span class="tok-kw">const</span> Flags = <span class="tok-kw">packed</span> <span class="tok-kw">struct</span>(<span class="tok-type">u8</span>) {</span>
<span class="line" id="L105"> last_filter_index: <span class="tok-type">u2</span>,</span>
<span class="line" id="L106"> reserved: <span class="tok-type">u4</span>,</span>
<span class="line" id="L107"> has_packed_size: <span class="tok-type">bool</span>,</span>
<span class="line" id="L108"> has_unpacked_size: <span class="tok-type">bool</span>,</span>
<span class="line" id="L109"> };</span>
<span class="line" id="L110"></span>
<span class="line" id="L111"> <span class="tok-kw">const</span> flags = <span class="tok-builtin">@as</span>(Flags, <span class="tok-builtin">@bitCast</span>(<span class="tok-kw">try</span> header_reader.readByte()));</span>
<span class="line" id="L112"> <span class="tok-kw">const</span> filter_count = <span class="tok-builtin">@as</span>(<span class="tok-type">u3</span>, flags.last_filter_index) + <span class="tok-number">1</span>;</span>
<span class="line" id="L113"> <span class="tok-kw">if</span> (filter_count > <span class="tok-number">1</span>)</span>
<span class="line" id="L114"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Unsupported;</span>
<span class="line" id="L115"></span>
<span class="line" id="L116"> <span class="tok-kw">if</span> (flags.has_packed_size)</span>
<span class="line" id="L117"> packed_size = <span class="tok-kw">try</span> std.leb.readULEB128(<span class="tok-type">u64</span>, header_reader);</span>
<span class="line" id="L118"></span>
<span class="line" id="L119"> <span class="tok-kw">if</span> (flags.has_unpacked_size)</span>
<span class="line" id="L120"> unpacked_size = <span class="tok-kw">try</span> std.leb.readULEB128(<span class="tok-type">u64</span>, header_reader);</span>
<span class="line" id="L121"></span>
<span class="line" id="L122"> <span class="tok-kw">const</span> FilterId = <span class="tok-kw">enum</span>(<span class="tok-type">u64</span>) {</span>
<span class="line" id="L123"> lzma2 = <span class="tok-number">0x21</span>,</span>
<span class="line" id="L124"> _,</span>
<span class="line" id="L125"> };</span>
<span class="line" id="L126"></span>
<span class="line" id="L127"> <span class="tok-kw">const</span> filter_id = <span class="tok-builtin">@as</span>(</span>
<span class="line" id="L128"> FilterId,</span>
<span class="line" id="L129"> <span class="tok-builtin">@enumFromInt</span>(<span class="tok-kw">try</span> std.leb.readULEB128(<span class="tok-type">u64</span>, header_reader)),</span>
<span class="line" id="L130"> );</span>
<span class="line" id="L131"></span>
<span class="line" id="L132"> <span class="tok-kw">if</span> (<span class="tok-builtin">@intFromEnum</span>(filter_id) >= <span class="tok-number">0x4000_0000_0000_0000</span>)</span>
<span class="line" id="L133"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L134"></span>
<span class="line" id="L135"> <span class="tok-kw">if</span> (filter_id != .lzma2)</span>
<span class="line" id="L136"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Unsupported;</span>
<span class="line" id="L137"></span>
<span class="line" id="L138"> <span class="tok-kw">const</span> properties_size = <span class="tok-kw">try</span> std.leb.readULEB128(<span class="tok-type">u64</span>, header_reader);</span>
<span class="line" id="L139"> <span class="tok-kw">if</span> (properties_size != <span class="tok-number">1</span>)</span>
<span class="line" id="L140"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L141"></span>
<span class="line" id="L142"> <span class="tok-comment">// TODO: use filter properties</span>
</span>
<span class="line" id="L143"> _ = <span class="tok-kw">try</span> header_reader.readByte();</span>
<span class="line" id="L144"></span>
<span class="line" id="L145"> <span class="tok-kw">while</span> (block_counter.bytes_read != header_size) {</span>
<span class="line" id="L146"> <span class="tok-kw">if</span> (<span class="tok-kw">try</span> header_reader.readByte() != <span class="tok-number">0</span>)</span>
<span class="line" id="L147"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L148"> }</span>
<span class="line" id="L149"></span>
<span class="line" id="L150"> <span class="tok-kw">const</span> hash_a = header_hasher.hasher.final();</span>
<span class="line" id="L151"> <span class="tok-kw">const</span> hash_b = <span class="tok-kw">try</span> header_reader.readIntLittle(<span class="tok-type">u32</span>);</span>
<span class="line" id="L152"> <span class="tok-kw">if</span> (hash_a != hash_b)</span>
<span class="line" id="L153"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.WrongChecksum;</span>
<span class="line" id="L154"> }</span>
<span class="line" id="L155"></span>
<span class="line" id="L156"> <span class="tok-comment">// Compressed Data</span>
</span>
<span class="line" id="L157"> <span class="tok-kw">var</span> packed_counter = std.io.countingReader(block_reader);</span>
<span class="line" id="L158"> <span class="tok-kw">try</span> lzma2.decompress(</span>
<span class="line" id="L159"> self.allocator,</span>
<span class="line" id="L160"> packed_counter.reader(),</span>
<span class="line" id="L161"> self.to_read.writer(self.allocator),</span>
<span class="line" id="L162"> );</span>
<span class="line" id="L163"></span>
<span class="line" id="L164"> <span class="tok-kw">if</span> (packed_size) |s| {</span>
<span class="line" id="L165"> <span class="tok-kw">if</span> (s != packed_counter.bytes_read)</span>
<span class="line" id="L166"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L167"> }</span>
<span class="line" id="L168"></span>
<span class="line" id="L169"> <span class="tok-kw">const</span> unpacked_bytes = self.to_read.items[unpacked_pos..];</span>
<span class="line" id="L170"> <span class="tok-kw">if</span> (unpacked_size) |s| {</span>
<span class="line" id="L171"> <span class="tok-kw">if</span> (s != unpacked_bytes.len)</span>
<span class="line" id="L172"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L173"> }</span>
<span class="line" id="L174"></span>
<span class="line" id="L175"> <span class="tok-comment">// Block Padding</span>
</span>
<span class="line" id="L176"> <span class="tok-kw">while</span> (block_counter.bytes_read % <span class="tok-number">4</span> != <span class="tok-number">0</span>) {</span>
<span class="line" id="L177"> <span class="tok-kw">if</span> (<span class="tok-kw">try</span> block_reader.readByte() != <span class="tok-number">0</span>)</span>
<span class="line" id="L178"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L179"> }</span>
<span class="line" id="L180"></span>
<span class="line" id="L181"> <span class="tok-kw">switch</span> (self.check) {</span>
<span class="line" id="L182"> .none => {},</span>
<span class="line" id="L183"> .crc32 => {</span>
<span class="line" id="L184"> <span class="tok-kw">const</span> hash_a = Crc32.hash(unpacked_bytes);</span>
<span class="line" id="L185"> <span class="tok-kw">const</span> hash_b = <span class="tok-kw">try</span> self.inner_reader.readIntLittle(<span class="tok-type">u32</span>);</span>
<span class="line" id="L186"> <span class="tok-kw">if</span> (hash_a != hash_b)</span>
<span class="line" id="L187"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.WrongChecksum;</span>
<span class="line" id="L188"> },</span>
<span class="line" id="L189"> .crc64 => {</span>
<span class="line" id="L190"> <span class="tok-kw">const</span> hash_a = Crc64.hash(unpacked_bytes);</span>
<span class="line" id="L191"> <span class="tok-kw">const</span> hash_b = <span class="tok-kw">try</span> self.inner_reader.readIntLittle(<span class="tok-type">u64</span>);</span>
<span class="line" id="L192"> <span class="tok-kw">if</span> (hash_a != hash_b)</span>
<span class="line" id="L193"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.WrongChecksum;</span>
<span class="line" id="L194"> },</span>
<span class="line" id="L195"> .sha256 => {</span>
<span class="line" id="L196"> <span class="tok-kw">var</span> hash_a: [Sha256.digest_length]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L197"> Sha256.hash(unpacked_bytes, &hash_a, .{});</span>
<span class="line" id="L198"></span>
<span class="line" id="L199"> <span class="tok-kw">var</span> hash_b: [Sha256.digest_length]<span class="tok-type">u8</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L200"> <span class="tok-kw">try</span> self.inner_reader.readNoEof(&hash_b);</span>
<span class="line" id="L201"></span>
<span class="line" id="L202"> <span class="tok-kw">if</span> (!std.mem.eql(<span class="tok-type">u8</span>, &hash_a, &hash_b))</span>
<span class="line" id="L203"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.WrongChecksum;</span>
<span class="line" id="L204"> },</span>
<span class="line" id="L205"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.Unsupported,</span>
<span class="line" id="L206"> }</span>
<span class="line" id="L207"></span>
<span class="line" id="L208"> self.block_count += <span class="tok-number">1</span>;</span>
<span class="line" id="L209"> }</span>
<span class="line" id="L210"> };</span>
<span class="line" id="L211">}</span>
<span class="line" id="L212"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/compress | repos/yazap/docs/src/std/compress/lzma/decode.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L5"></span>
<span class="line" id="L6"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> lzbuffer = <span class="tok-builtin">@import</span>(<span class="tok-str">"decode/lzbuffer.zig"</span>);</span>
<span class="line" id="L7"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> rangecoder = <span class="tok-builtin">@import</span>(<span class="tok-str">"decode/rangecoder.zig"</span>);</span>
<span class="line" id="L8"></span>
<span class="line" id="L9"><span class="tok-kw">const</span> LzCircularBuffer = lzbuffer.LzCircularBuffer;</span>
<span class="line" id="L10"><span class="tok-kw">const</span> BitTree = rangecoder.BitTree;</span>
<span class="line" id="L11"><span class="tok-kw">const</span> LenDecoder = rangecoder.LenDecoder;</span>
<span class="line" id="L12"><span class="tok-kw">const</span> RangeDecoder = rangecoder.RangeDecoder;</span>
<span class="line" id="L13"><span class="tok-kw">const</span> Vec2D = <span class="tok-builtin">@import</span>(<span class="tok-str">"vec2d.zig"</span>).Vec2D;</span>
<span class="line" id="L14"></span>
<span class="line" id="L15"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Options = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L16"> unpacked_size: UnpackedSize = .read_from_header,</span>
<span class="line" id="L17"> memlimit: ?<span class="tok-type">usize</span> = <span class="tok-null">null</span>,</span>
<span class="line" id="L18"> allow_incomplete: <span class="tok-type">bool</span> = <span class="tok-null">false</span>,</span>
<span class="line" id="L19">};</span>
<span class="line" id="L20"></span>
<span class="line" id="L21"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> UnpackedSize = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L22"> read_from_header,</span>
<span class="line" id="L23"> read_header_but_use_provided: ?<span class="tok-type">u64</span>,</span>
<span class="line" id="L24"> use_provided: ?<span class="tok-type">u64</span>,</span>
<span class="line" id="L25">};</span>
<span class="line" id="L26"></span>
<span class="line" id="L27"><span class="tok-kw">const</span> ProcessingStatus = <span class="tok-kw">enum</span> {</span>
<span class="line" id="L28"> continue_,</span>
<span class="line" id="L29"> finished,</span>
<span class="line" id="L30">};</span>
<span class="line" id="L31"></span>
<span class="line" id="L32"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Properties = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L33"> lc: <span class="tok-type">u4</span>,</span>
<span class="line" id="L34"> lp: <span class="tok-type">u3</span>,</span>
<span class="line" id="L35"> pb: <span class="tok-type">u3</span>,</span>
<span class="line" id="L36"></span>
<span class="line" id="L37"> <span class="tok-kw">fn</span> <span class="tok-fn">validate</span>(self: Properties) <span class="tok-type">void</span> {</span>
<span class="line" id="L38"> assert(self.lc <= <span class="tok-number">8</span>);</span>
<span class="line" id="L39"> assert(self.lp <= <span class="tok-number">4</span>);</span>
<span class="line" id="L40"> assert(self.pb <= <span class="tok-number">4</span>);</span>
<span class="line" id="L41"> }</span>
<span class="line" id="L42">};</span>
<span class="line" id="L43"></span>
<span class="line" id="L44"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Params = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L45"> properties: Properties,</span>
<span class="line" id="L46"> dict_size: <span class="tok-type">u32</span>,</span>
<span class="line" id="L47"> unpacked_size: ?<span class="tok-type">u64</span>,</span>
<span class="line" id="L48"></span>
<span class="line" id="L49"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">readHeader</span>(reader: <span class="tok-kw">anytype</span>, options: Options) !Params {</span>
<span class="line" id="L50"> <span class="tok-kw">var</span> props = <span class="tok-kw">try</span> reader.readByte();</span>
<span class="line" id="L51"> <span class="tok-kw">if</span> (props >= <span class="tok-number">225</span>) {</span>
<span class="line" id="L52"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L53"> }</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"> <span class="tok-kw">const</span> lc = <span class="tok-builtin">@as</span>(<span class="tok-type">u4</span>, <span class="tok-builtin">@intCast</span>(props % <span class="tok-number">9</span>));</span>
<span class="line" id="L56"> props /= <span class="tok-number">9</span>;</span>
<span class="line" id="L57"> <span class="tok-kw">const</span> lp = <span class="tok-builtin">@as</span>(<span class="tok-type">u3</span>, <span class="tok-builtin">@intCast</span>(props % <span class="tok-number">5</span>));</span>
<span class="line" id="L58"> props /= <span class="tok-number">5</span>;</span>
<span class="line" id="L59"> <span class="tok-kw">const</span> pb = <span class="tok-builtin">@as</span>(<span class="tok-type">u3</span>, <span class="tok-builtin">@intCast</span>(props));</span>
<span class="line" id="L60"></span>
<span class="line" id="L61"> <span class="tok-kw">const</span> dict_size_provided = <span class="tok-kw">try</span> reader.readIntLittle(<span class="tok-type">u32</span>);</span>
<span class="line" id="L62"> <span class="tok-kw">const</span> dict_size = <span class="tok-builtin">@max</span>(<span class="tok-number">0x1000</span>, dict_size_provided);</span>
<span class="line" id="L63"></span>
<span class="line" id="L64"> <span class="tok-kw">const</span> unpacked_size = <span class="tok-kw">switch</span> (options.unpacked_size) {</span>
<span class="line" id="L65"> .read_from_header => blk: {</span>
<span class="line" id="L66"> <span class="tok-kw">const</span> unpacked_size_provided = <span class="tok-kw">try</span> reader.readIntLittle(<span class="tok-type">u64</span>);</span>
<span class="line" id="L67"> <span class="tok-kw">const</span> marker_mandatory = unpacked_size_provided == <span class="tok-number">0xFFFF_FFFF_FFFF_FFFF</span>;</span>
<span class="line" id="L68"> <span class="tok-kw">break</span> :blk <span class="tok-kw">if</span> (marker_mandatory)</span>
<span class="line" id="L69"> <span class="tok-null">null</span></span>
<span class="line" id="L70"> <span class="tok-kw">else</span></span>
<span class="line" id="L71"> unpacked_size_provided;</span>
<span class="line" id="L72"> },</span>
<span class="line" id="L73"> .read_header_but_use_provided => |x| blk: {</span>
<span class="line" id="L74"> _ = <span class="tok-kw">try</span> reader.readIntLittle(<span class="tok-type">u64</span>);</span>
<span class="line" id="L75"> <span class="tok-kw">break</span> :blk x;</span>
<span class="line" id="L76"> },</span>
<span class="line" id="L77"> .use_provided => |x| x,</span>
<span class="line" id="L78"> };</span>
<span class="line" id="L79"></span>
<span class="line" id="L80"> <span class="tok-kw">return</span> Params{</span>
<span class="line" id="L81"> .properties = Properties{ .lc = lc, .lp = lp, .pb = pb },</span>
<span class="line" id="L82"> .dict_size = dict_size,</span>
<span class="line" id="L83"> .unpacked_size = unpacked_size,</span>
<span class="line" id="L84"> };</span>
<span class="line" id="L85"> }</span>
<span class="line" id="L86">};</span>
<span class="line" id="L87"></span>
<span class="line" id="L88"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> DecoderState = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L89"> lzma_props: Properties,</span>
<span class="line" id="L90"> unpacked_size: ?<span class="tok-type">u64</span>,</span>
<span class="line" id="L91"> literal_probs: Vec2D(<span class="tok-type">u16</span>),</span>
<span class="line" id="L92"> pos_slot_decoder: [<span class="tok-number">4</span>]BitTree(<span class="tok-number">6</span>),</span>
<span class="line" id="L93"> align_decoder: BitTree(<span class="tok-number">4</span>),</span>
<span class="line" id="L94"> pos_decoders: [<span class="tok-number">115</span>]<span class="tok-type">u16</span>,</span>
<span class="line" id="L95"> is_match: [<span class="tok-number">192</span>]<span class="tok-type">u16</span>,</span>
<span class="line" id="L96"> is_rep: [<span class="tok-number">12</span>]<span class="tok-type">u16</span>,</span>
<span class="line" id="L97"> is_rep_g0: [<span class="tok-number">12</span>]<span class="tok-type">u16</span>,</span>
<span class="line" id="L98"> is_rep_g1: [<span class="tok-number">12</span>]<span class="tok-type">u16</span>,</span>
<span class="line" id="L99"> is_rep_g2: [<span class="tok-number">12</span>]<span class="tok-type">u16</span>,</span>
<span class="line" id="L100"> is_rep_0long: [<span class="tok-number">192</span>]<span class="tok-type">u16</span>,</span>
<span class="line" id="L101"> state: <span class="tok-type">usize</span>,</span>
<span class="line" id="L102"> rep: [<span class="tok-number">4</span>]<span class="tok-type">usize</span>,</span>
<span class="line" id="L103"> len_decoder: LenDecoder,</span>
<span class="line" id="L104"> rep_len_decoder: LenDecoder,</span>
<span class="line" id="L105"></span>
<span class="line" id="L106"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(</span>
<span class="line" id="L107"> allocator: Allocator,</span>
<span class="line" id="L108"> lzma_props: Properties,</span>
<span class="line" id="L109"> unpacked_size: ?<span class="tok-type">u64</span>,</span>
<span class="line" id="L110"> ) !DecoderState {</span>
<span class="line" id="L111"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L112"> .lzma_props = lzma_props,</span>
<span class="line" id="L113"> .unpacked_size = unpacked_size,</span>
<span class="line" id="L114"> .literal_probs = <span class="tok-kw">try</span> Vec2D(<span class="tok-type">u16</span>).init(allocator, <span class="tok-number">0x400</span>, .{ <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">1</span>) << (lzma_props.lc + lzma_props.lp), <span class="tok-number">0x300</span> }),</span>
<span class="line" id="L115"> .pos_slot_decoder = .{.{}} ** <span class="tok-number">4</span>,</span>
<span class="line" id="L116"> .align_decoder = .{},</span>
<span class="line" id="L117"> .pos_decoders = .{<span class="tok-number">0x400</span>} ** <span class="tok-number">115</span>,</span>
<span class="line" id="L118"> .is_match = .{<span class="tok-number">0x400</span>} ** <span class="tok-number">192</span>,</span>
<span class="line" id="L119"> .is_rep = .{<span class="tok-number">0x400</span>} ** <span class="tok-number">12</span>,</span>
<span class="line" id="L120"> .is_rep_g0 = .{<span class="tok-number">0x400</span>} ** <span class="tok-number">12</span>,</span>
<span class="line" id="L121"> .is_rep_g1 = .{<span class="tok-number">0x400</span>} ** <span class="tok-number">12</span>,</span>
<span class="line" id="L122"> .is_rep_g2 = .{<span class="tok-number">0x400</span>} ** <span class="tok-number">12</span>,</span>
<span class="line" id="L123"> .is_rep_0long = .{<span class="tok-number">0x400</span>} ** <span class="tok-number">192</span>,</span>
<span class="line" id="L124"> .state = <span class="tok-number">0</span>,</span>
<span class="line" id="L125"> .rep = .{<span class="tok-number">0</span>} ** <span class="tok-number">4</span>,</span>
<span class="line" id="L126"> .len_decoder = .{},</span>
<span class="line" id="L127"> .rep_len_decoder = .{},</span>
<span class="line" id="L128"> };</span>
<span class="line" id="L129"> }</span>
<span class="line" id="L130"></span>
<span class="line" id="L131"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *DecoderState, allocator: Allocator) <span class="tok-type">void</span> {</span>
<span class="line" id="L132"> self.literal_probs.deinit(allocator);</span>
<span class="line" id="L133"> self.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L134"> }</span>
<span class="line" id="L135"></span>
<span class="line" id="L136"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">resetState</span>(self: *DecoderState, allocator: Allocator, new_props: Properties) !<span class="tok-type">void</span> {</span>
<span class="line" id="L137"> new_props.validate();</span>
<span class="line" id="L138"> <span class="tok-kw">if</span> (self.lzma_props.lc + self.lzma_props.lp == new_props.lc + new_props.lp) {</span>
<span class="line" id="L139"> self.literal_probs.fill(<span class="tok-number">0x400</span>);</span>
<span class="line" id="L140"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L141"> self.literal_probs.deinit(allocator);</span>
<span class="line" id="L142"> self.literal_probs = <span class="tok-kw">try</span> Vec2D(<span class="tok-type">u16</span>).init(allocator, <span class="tok-number">0x400</span>, .{ <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">1</span>) << (new_props.lc + new_props.lp), <span class="tok-number">0x300</span> });</span>
<span class="line" id="L143"> }</span>
<span class="line" id="L144"></span>
<span class="line" id="L145"> self.lzma_props = new_props;</span>
<span class="line" id="L146"> <span class="tok-kw">for</span> (&self.pos_slot_decoder) |*t| t.reset();</span>
<span class="line" id="L147"> self.align_decoder.reset();</span>
<span class="line" id="L148"> self.pos_decoders = .{<span class="tok-number">0x400</span>} ** <span class="tok-number">115</span>;</span>
<span class="line" id="L149"> self.is_match = .{<span class="tok-number">0x400</span>} ** <span class="tok-number">192</span>;</span>
<span class="line" id="L150"> self.is_rep = .{<span class="tok-number">0x400</span>} ** <span class="tok-number">12</span>;</span>
<span class="line" id="L151"> self.is_rep_g0 = .{<span class="tok-number">0x400</span>} ** <span class="tok-number">12</span>;</span>
<span class="line" id="L152"> self.is_rep_g1 = .{<span class="tok-number">0x400</span>} ** <span class="tok-number">12</span>;</span>
<span class="line" id="L153"> self.is_rep_g2 = .{<span class="tok-number">0x400</span>} ** <span class="tok-number">12</span>;</span>
<span class="line" id="L154"> self.is_rep_0long = .{<span class="tok-number">0x400</span>} ** <span class="tok-number">192</span>;</span>
<span class="line" id="L155"> self.state = <span class="tok-number">0</span>;</span>
<span class="line" id="L156"> self.rep = .{<span class="tok-number">0</span>} ** <span class="tok-number">4</span>;</span>
<span class="line" id="L157"> self.len_decoder.reset();</span>
<span class="line" id="L158"> self.rep_len_decoder.reset();</span>
<span class="line" id="L159"> }</span>
<span class="line" id="L160"></span>
<span class="line" id="L161"> <span class="tok-kw">fn</span> <span class="tok-fn">processNextInner</span>(</span>
<span class="line" id="L162"> self: *DecoderState,</span>
<span class="line" id="L163"> allocator: Allocator,</span>
<span class="line" id="L164"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L165"> writer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L166"> buffer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L167"> decoder: *RangeDecoder,</span>
<span class="line" id="L168"> update: <span class="tok-type">bool</span>,</span>
<span class="line" id="L169"> ) !ProcessingStatus {</span>
<span class="line" id="L170"> <span class="tok-kw">const</span> pos_state = buffer.len & ((<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">1</span>) << self.lzma_props.pb) - <span class="tok-number">1</span>);</span>
<span class="line" id="L171"></span>
<span class="line" id="L172"> <span class="tok-kw">if</span> (!<span class="tok-kw">try</span> decoder.decodeBit(</span>
<span class="line" id="L173"> reader,</span>
<span class="line" id="L174"> &self.is_match[(self.state << <span class="tok-number">4</span>) + pos_state],</span>
<span class="line" id="L175"> update,</span>
<span class="line" id="L176"> )) {</span>
<span class="line" id="L177"> <span class="tok-kw">const</span> byte: <span class="tok-type">u8</span> = <span class="tok-kw">try</span> self.decodeLiteral(reader, buffer, decoder, update);</span>
<span class="line" id="L178"></span>
<span class="line" id="L179"> <span class="tok-kw">if</span> (update) {</span>
<span class="line" id="L180"> <span class="tok-kw">try</span> buffer.appendLiteral(allocator, byte, writer);</span>
<span class="line" id="L181"></span>
<span class="line" id="L182"> self.state = <span class="tok-kw">if</span> (self.state < <span class="tok-number">4</span>)</span>
<span class="line" id="L183"> <span class="tok-number">0</span></span>
<span class="line" id="L184"> <span class="tok-kw">else</span> <span class="tok-kw">if</span> (self.state < <span class="tok-number">10</span>)</span>
<span class="line" id="L185"> self.state - <span class="tok-number">3</span></span>
<span class="line" id="L186"> <span class="tok-kw">else</span></span>
<span class="line" id="L187"> self.state - <span class="tok-number">6</span>;</span>
<span class="line" id="L188"> }</span>
<span class="line" id="L189"> <span class="tok-kw">return</span> .continue_;</span>
<span class="line" id="L190"> }</span>
<span class="line" id="L191"></span>
<span class="line" id="L192"> <span class="tok-kw">var</span> len: <span class="tok-type">usize</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L193"> <span class="tok-kw">if</span> (<span class="tok-kw">try</span> decoder.decodeBit(reader, &self.is_rep[self.state], update)) {</span>
<span class="line" id="L194"> <span class="tok-kw">if</span> (!<span class="tok-kw">try</span> decoder.decodeBit(reader, &self.is_rep_g0[self.state], update)) {</span>
<span class="line" id="L195"> <span class="tok-kw">if</span> (!<span class="tok-kw">try</span> decoder.decodeBit(</span>
<span class="line" id="L196"> reader,</span>
<span class="line" id="L197"> &self.is_rep_0long[(self.state << <span class="tok-number">4</span>) + pos_state],</span>
<span class="line" id="L198"> update,</span>
<span class="line" id="L199"> )) {</span>
<span class="line" id="L200"> <span class="tok-kw">if</span> (update) {</span>
<span class="line" id="L201"> self.state = <span class="tok-kw">if</span> (self.state < <span class="tok-number">7</span>) <span class="tok-number">9</span> <span class="tok-kw">else</span> <span class="tok-number">11</span>;</span>
<span class="line" id="L202"> <span class="tok-kw">const</span> dist = self.rep[<span class="tok-number">0</span>] + <span class="tok-number">1</span>;</span>
<span class="line" id="L203"> <span class="tok-kw">try</span> buffer.appendLz(allocator, <span class="tok-number">1</span>, dist, writer);</span>
<span class="line" id="L204"> }</span>
<span class="line" id="L205"> <span class="tok-kw">return</span> .continue_;</span>
<span class="line" id="L206"> }</span>
<span class="line" id="L207"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L208"> <span class="tok-kw">const</span> idx: <span class="tok-type">usize</span> = <span class="tok-kw">if</span> (!<span class="tok-kw">try</span> decoder.decodeBit(reader, &self.is_rep_g1[self.state], update))</span>
<span class="line" id="L209"> <span class="tok-number">1</span></span>
<span class="line" id="L210"> <span class="tok-kw">else</span> <span class="tok-kw">if</span> (!<span class="tok-kw">try</span> decoder.decodeBit(reader, &self.is_rep_g2[self.state], update))</span>
<span class="line" id="L211"> <span class="tok-number">2</span></span>
<span class="line" id="L212"> <span class="tok-kw">else</span></span>
<span class="line" id="L213"> <span class="tok-number">3</span>;</span>
<span class="line" id="L214"> <span class="tok-kw">if</span> (update) {</span>
<span class="line" id="L215"> <span class="tok-kw">const</span> dist = self.rep[idx];</span>
<span class="line" id="L216"> <span class="tok-kw">var</span> i = idx;</span>
<span class="line" id="L217"> <span class="tok-kw">while</span> (i > <span class="tok-number">0</span>) : (i -= <span class="tok-number">1</span>) {</span>
<span class="line" id="L218"> self.rep[i] = self.rep[i - <span class="tok-number">1</span>];</span>
<span class="line" id="L219"> }</span>
<span class="line" id="L220"> self.rep[<span class="tok-number">0</span>] = dist;</span>
<span class="line" id="L221"> }</span>
<span class="line" id="L222"> }</span>
<span class="line" id="L223"></span>
<span class="line" id="L224"> len = <span class="tok-kw">try</span> self.rep_len_decoder.decode(reader, decoder, pos_state, update);</span>
<span class="line" id="L225"></span>
<span class="line" id="L226"> <span class="tok-kw">if</span> (update) {</span>
<span class="line" id="L227"> self.state = <span class="tok-kw">if</span> (self.state < <span class="tok-number">7</span>) <span class="tok-number">8</span> <span class="tok-kw">else</span> <span class="tok-number">11</span>;</span>
<span class="line" id="L228"> }</span>
<span class="line" id="L229"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L230"> <span class="tok-kw">if</span> (update) {</span>
<span class="line" id="L231"> self.rep[<span class="tok-number">3</span>] = self.rep[<span class="tok-number">2</span>];</span>
<span class="line" id="L232"> self.rep[<span class="tok-number">2</span>] = self.rep[<span class="tok-number">1</span>];</span>
<span class="line" id="L233"> self.rep[<span class="tok-number">1</span>] = self.rep[<span class="tok-number">0</span>];</span>
<span class="line" id="L234"> }</span>
<span class="line" id="L235"></span>
<span class="line" id="L236"> len = <span class="tok-kw">try</span> self.len_decoder.decode(reader, decoder, pos_state, update);</span>
<span class="line" id="L237"></span>
<span class="line" id="L238"> <span class="tok-kw">if</span> (update) {</span>
<span class="line" id="L239"> self.state = <span class="tok-kw">if</span> (self.state < <span class="tok-number">7</span>) <span class="tok-number">7</span> <span class="tok-kw">else</span> <span class="tok-number">10</span>;</span>
<span class="line" id="L240"> }</span>
<span class="line" id="L241"></span>
<span class="line" id="L242"> <span class="tok-kw">const</span> rep_0 = <span class="tok-kw">try</span> self.decodeDistance(reader, decoder, len, update);</span>
<span class="line" id="L243"></span>
<span class="line" id="L244"> <span class="tok-kw">if</span> (update) {</span>
<span class="line" id="L245"> self.rep[<span class="tok-number">0</span>] = rep_0;</span>
<span class="line" id="L246"> <span class="tok-kw">if</span> (self.rep[<span class="tok-number">0</span>] == <span class="tok-number">0xFFFF_FFFF</span>) {</span>
<span class="line" id="L247"> <span class="tok-kw">if</span> (decoder.isFinished()) {</span>
<span class="line" id="L248"> <span class="tok-kw">return</span> .finished;</span>
<span class="line" id="L249"> }</span>
<span class="line" id="L250"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L251"> }</span>
<span class="line" id="L252"> }</span>
<span class="line" id="L253"> }</span>
<span class="line" id="L254"></span>
<span class="line" id="L255"> <span class="tok-kw">if</span> (update) {</span>
<span class="line" id="L256"> len += <span class="tok-number">2</span>;</span>
<span class="line" id="L257"></span>
<span class="line" id="L258"> <span class="tok-kw">const</span> dist = self.rep[<span class="tok-number">0</span>] + <span class="tok-number">1</span>;</span>
<span class="line" id="L259"> <span class="tok-kw">try</span> buffer.appendLz(allocator, len, dist, writer);</span>
<span class="line" id="L260"> }</span>
<span class="line" id="L261"></span>
<span class="line" id="L262"> <span class="tok-kw">return</span> .continue_;</span>
<span class="line" id="L263"> }</span>
<span class="line" id="L264"></span>
<span class="line" id="L265"> <span class="tok-kw">fn</span> <span class="tok-fn">processNext</span>(</span>
<span class="line" id="L266"> self: *DecoderState,</span>
<span class="line" id="L267"> allocator: Allocator,</span>
<span class="line" id="L268"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L269"> writer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L270"> buffer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L271"> decoder: *RangeDecoder,</span>
<span class="line" id="L272"> ) !ProcessingStatus {</span>
<span class="line" id="L273"> <span class="tok-kw">return</span> self.processNextInner(allocator, reader, writer, buffer, decoder, <span class="tok-null">true</span>);</span>
<span class="line" id="L274"> }</span>
<span class="line" id="L275"></span>
<span class="line" id="L276"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">process</span>(</span>
<span class="line" id="L277"> self: *DecoderState,</span>
<span class="line" id="L278"> allocator: Allocator,</span>
<span class="line" id="L279"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L280"> writer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L281"> buffer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L282"> decoder: *RangeDecoder,</span>
<span class="line" id="L283"> ) !ProcessingStatus {</span>
<span class="line" id="L284"> process_next: {</span>
<span class="line" id="L285"> <span class="tok-kw">if</span> (self.unpacked_size) |unpacked_size| {</span>
<span class="line" id="L286"> <span class="tok-kw">if</span> (buffer.len >= unpacked_size) {</span>
<span class="line" id="L287"> <span class="tok-kw">break</span> :process_next;</span>
<span class="line" id="L288"> }</span>
<span class="line" id="L289"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (decoder.isFinished()) {</span>
<span class="line" id="L290"> <span class="tok-kw">break</span> :process_next;</span>
<span class="line" id="L291"> }</span>
<span class="line" id="L292"></span>
<span class="line" id="L293"> <span class="tok-kw">switch</span> (<span class="tok-kw">try</span> self.processNext(allocator, reader, writer, buffer, decoder)) {</span>
<span class="line" id="L294"> .continue_ => <span class="tok-kw">return</span> .continue_,</span>
<span class="line" id="L295"> .finished => <span class="tok-kw">break</span> :process_next,</span>
<span class="line" id="L296"> }</span>
<span class="line" id="L297"> }</span>
<span class="line" id="L298"></span>
<span class="line" id="L299"> <span class="tok-kw">if</span> (self.unpacked_size) |unpacked_size| {</span>
<span class="line" id="L300"> <span class="tok-kw">if</span> (buffer.len != unpacked_size) {</span>
<span class="line" id="L301"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L302"> }</span>
<span class="line" id="L303"> }</span>
<span class="line" id="L304"></span>
<span class="line" id="L305"> <span class="tok-kw">return</span> .finished;</span>
<span class="line" id="L306"> }</span>
<span class="line" id="L307"></span>
<span class="line" id="L308"> <span class="tok-kw">fn</span> <span class="tok-fn">decodeLiteral</span>(</span>
<span class="line" id="L309"> self: *DecoderState,</span>
<span class="line" id="L310"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L311"> buffer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L312"> decoder: *RangeDecoder,</span>
<span class="line" id="L313"> update: <span class="tok-type">bool</span>,</span>
<span class="line" id="L314"> ) !<span class="tok-type">u8</span> {</span>
<span class="line" id="L315"> <span class="tok-kw">const</span> def_prev_byte = <span class="tok-number">0</span>;</span>
<span class="line" id="L316"> <span class="tok-kw">const</span> prev_byte = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, buffer.lastOr(def_prev_byte));</span>
<span class="line" id="L317"></span>
<span class="line" id="L318"> <span class="tok-kw">var</span> result: <span class="tok-type">usize</span> = <span class="tok-number">1</span>;</span>
<span class="line" id="L319"> <span class="tok-kw">const</span> lit_state = ((buffer.len & ((<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">1</span>) << self.lzma_props.lp) - <span class="tok-number">1</span>)) << self.lzma_props.lc) +</span>
<span class="line" id="L320"> (prev_byte >> (<span class="tok-number">8</span> - self.lzma_props.lc));</span>
<span class="line" id="L321"> <span class="tok-kw">const</span> probs = <span class="tok-kw">try</span> self.literal_probs.getMut(lit_state);</span>
<span class="line" id="L322"></span>
<span class="line" id="L323"> <span class="tok-kw">if</span> (self.state >= <span class="tok-number">7</span>) {</span>
<span class="line" id="L324"> <span class="tok-kw">var</span> match_byte = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-kw">try</span> buffer.lastN(self.rep[<span class="tok-number">0</span>] + <span class="tok-number">1</span>));</span>
<span class="line" id="L325"></span>
<span class="line" id="L326"> <span class="tok-kw">while</span> (result < <span class="tok-number">0x100</span>) {</span>
<span class="line" id="L327"> <span class="tok-kw">const</span> match_bit = (match_byte >> <span class="tok-number">7</span>) & <span class="tok-number">1</span>;</span>
<span class="line" id="L328"> match_byte <<= <span class="tok-number">1</span>;</span>
<span class="line" id="L329"> <span class="tok-kw">const</span> bit = <span class="tok-builtin">@intFromBool</span>(<span class="tok-kw">try</span> decoder.decodeBit(</span>
<span class="line" id="L330"> reader,</span>
<span class="line" id="L331"> &probs[((<span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-number">1</span>) + match_bit) << <span class="tok-number">8</span>) + result],</span>
<span class="line" id="L332"> update,</span>
<span class="line" id="L333"> ));</span>
<span class="line" id="L334"> result = (result << <span class="tok-number">1</span>) ^ bit;</span>
<span class="line" id="L335"> <span class="tok-kw">if</span> (match_bit != bit) {</span>
<span class="line" id="L336"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L337"> }</span>
<span class="line" id="L338"> }</span>
<span class="line" id="L339"> }</span>
<span class="line" id="L340"></span>
<span class="line" id="L341"> <span class="tok-kw">while</span> (result < <span class="tok-number">0x100</span>) {</span>
<span class="line" id="L342"> result = (result << <span class="tok-number">1</span>) ^ <span class="tok-builtin">@intFromBool</span>(<span class="tok-kw">try</span> decoder.decodeBit(reader, &probs[result], update));</span>
<span class="line" id="L343"> }</span>
<span class="line" id="L344"></span>
<span class="line" id="L345"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@truncate</span>(result - <span class="tok-number">0x100</span>));</span>
<span class="line" id="L346"> }</span>
<span class="line" id="L347"></span>
<span class="line" id="L348"> <span class="tok-kw">fn</span> <span class="tok-fn">decodeDistance</span>(</span>
<span class="line" id="L349"> self: *DecoderState,</span>
<span class="line" id="L350"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L351"> decoder: *RangeDecoder,</span>
<span class="line" id="L352"> length: <span class="tok-type">usize</span>,</span>
<span class="line" id="L353"> update: <span class="tok-type">bool</span>,</span>
<span class="line" id="L354"> ) !<span class="tok-type">usize</span> {</span>
<span class="line" id="L355"> <span class="tok-kw">const</span> len_state = <span class="tok-kw">if</span> (length > <span class="tok-number">3</span>) <span class="tok-number">3</span> <span class="tok-kw">else</span> length;</span>
<span class="line" id="L356"></span>
<span class="line" id="L357"> <span class="tok-kw">const</span> pos_slot = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-kw">try</span> self.pos_slot_decoder[len_state].parse(reader, decoder, update));</span>
<span class="line" id="L358"> <span class="tok-kw">if</span> (pos_slot < <span class="tok-number">4</span>)</span>
<span class="line" id="L359"> <span class="tok-kw">return</span> pos_slot;</span>
<span class="line" id="L360"></span>
<span class="line" id="L361"> <span class="tok-kw">const</span> num_direct_bits = <span class="tok-builtin">@as</span>(<span class="tok-type">u5</span>, <span class="tok-builtin">@intCast</span>((pos_slot >> <span class="tok-number">1</span>) - <span class="tok-number">1</span>));</span>
<span class="line" id="L362"> <span class="tok-kw">var</span> result = (<span class="tok-number">2</span> ^ (pos_slot & <span class="tok-number">1</span>)) << num_direct_bits;</span>
<span class="line" id="L363"></span>
<span class="line" id="L364"> <span class="tok-kw">if</span> (pos_slot < <span class="tok-number">14</span>) {</span>
<span class="line" id="L365"> result += <span class="tok-kw">try</span> decoder.parseReverseBitTree(</span>
<span class="line" id="L366"> reader,</span>
<span class="line" id="L367"> num_direct_bits,</span>
<span class="line" id="L368"> &self.pos_decoders,</span>
<span class="line" id="L369"> result - pos_slot,</span>
<span class="line" id="L370"> update,</span>
<span class="line" id="L371"> );</span>
<span class="line" id="L372"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L373"> result += <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-kw">try</span> decoder.get(reader, num_direct_bits - <span class="tok-number">4</span>)) << <span class="tok-number">4</span>;</span>
<span class="line" id="L374"> result += <span class="tok-kw">try</span> self.align_decoder.parseReverse(reader, decoder, update);</span>
<span class="line" id="L375"> }</span>
<span class="line" id="L376"></span>
<span class="line" id="L377"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L378"> }</span>
<span class="line" id="L379">};</span>
<span class="line" id="L380"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/compress | repos/yazap/docs/src/std/compress/lzma/vec2d.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L5"></span>
<span class="line" id="L6"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">Vec2D</span>(<span class="tok-kw">comptime</span> T: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L7"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L8"> data: []T,</span>
<span class="line" id="L9"> cols: <span class="tok-type">usize</span>,</span>
<span class="line" id="L10"></span>
<span class="line" id="L11"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L12"></span>
<span class="line" id="L13"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(allocator: Allocator, value: T, size: <span class="tok-kw">struct</span> { <span class="tok-type">usize</span>, <span class="tok-type">usize</span> }) !Self {</span>
<span class="line" id="L14"> <span class="tok-kw">const</span> len = <span class="tok-kw">try</span> math.mul(<span class="tok-type">usize</span>, size[<span class="tok-number">0</span>], size[<span class="tok-number">1</span>]);</span>
<span class="line" id="L15"> <span class="tok-kw">const</span> data = <span class="tok-kw">try</span> allocator.alloc(T, len);</span>
<span class="line" id="L16"> <span class="tok-builtin">@memset</span>(data, value);</span>
<span class="line" id="L17"> <span class="tok-kw">return</span> Self{</span>
<span class="line" id="L18"> .data = data,</span>
<span class="line" id="L19"> .cols = size[<span class="tok-number">1</span>],</span>
<span class="line" id="L20"> };</span>
<span class="line" id="L21"> }</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *Self, allocator: Allocator) <span class="tok-type">void</span> {</span>
<span class="line" id="L24"> allocator.free(self.data);</span>
<span class="line" id="L25"> self.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L26"> }</span>
<span class="line" id="L27"></span>
<span class="line" id="L28"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fill</span>(self: *Self, value: T) <span class="tok-type">void</span> {</span>
<span class="line" id="L29"> <span class="tok-builtin">@memset</span>(self.data, value);</span>
<span class="line" id="L30"> }</span>
<span class="line" id="L31"></span>
<span class="line" id="L32"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">_get</span>(self: Self, row: <span class="tok-type">usize</span>) ![]T {</span>
<span class="line" id="L33"> <span class="tok-kw">const</span> start_row = <span class="tok-kw">try</span> math.mul(<span class="tok-type">usize</span>, row, self.cols);</span>
<span class="line" id="L34"> <span class="tok-kw">const</span> end_row = <span class="tok-kw">try</span> math.add(<span class="tok-type">usize</span>, start_row, self.cols);</span>
<span class="line" id="L35"> <span class="tok-kw">return</span> self.data[start_row..end_row];</span>
<span class="line" id="L36"> }</span>
<span class="line" id="L37"></span>
<span class="line" id="L38"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">get</span>(self: Self, row: <span class="tok-type">usize</span>) ![]<span class="tok-kw">const</span> T {</span>
<span class="line" id="L39"> <span class="tok-kw">return</span> self._get(row);</span>
<span class="line" id="L40"> }</span>
<span class="line" id="L41"></span>
<span class="line" id="L42"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">getMut</span>(self: *Self, row: <span class="tok-type">usize</span>) ![]T {</span>
<span class="line" id="L43"> <span class="tok-kw">return</span> self._get(row);</span>
<span class="line" id="L44"> }</span>
<span class="line" id="L45"> };</span>
<span class="line" id="L46">}</span>
<span class="line" id="L47"></span>
<span class="line" id="L48"><span class="tok-kw">const</span> testing = std.testing;</span>
<span class="line" id="L49"><span class="tok-kw">const</span> expectEqualSlices = std.testing.expectEqualSlices;</span>
<span class="line" id="L50"><span class="tok-kw">const</span> expectError = std.testing.expectError;</span>
<span class="line" id="L51"></span>
<span class="line" id="L52"><span class="tok-kw">test</span> <span class="tok-str">"Vec2D.init"</span> {</span>
<span class="line" id="L53"> <span class="tok-kw">const</span> allocator = testing.allocator;</span>
<span class="line" id="L54"> <span class="tok-kw">var</span> vec2d = <span class="tok-kw">try</span> Vec2D(<span class="tok-type">i32</span>).init(allocator, <span class="tok-number">1</span>, .{ <span class="tok-number">2</span>, <span class="tok-number">3</span> });</span>
<span class="line" id="L55"> <span class="tok-kw">defer</span> vec2d.deinit(allocator);</span>
<span class="line" id="L56"></span>
<span class="line" id="L57"> <span class="tok-kw">try</span> expectEqualSlices(<span class="tok-type">i32</span>, &.{ <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span> }, <span class="tok-kw">try</span> vec2d.get(<span class="tok-number">0</span>));</span>
<span class="line" id="L58"> <span class="tok-kw">try</span> expectEqualSlices(<span class="tok-type">i32</span>, &.{ <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span> }, <span class="tok-kw">try</span> vec2d.get(<span class="tok-number">1</span>));</span>
<span class="line" id="L59">}</span>
<span class="line" id="L60"></span>
<span class="line" id="L61"><span class="tok-kw">test</span> <span class="tok-str">"Vec2D.init overflow"</span> {</span>
<span class="line" id="L62"> <span class="tok-kw">const</span> allocator = testing.allocator;</span>
<span class="line" id="L63"> <span class="tok-kw">try</span> expectError(</span>
<span class="line" id="L64"> <span class="tok-kw">error</span>.Overflow,</span>
<span class="line" id="L65"> Vec2D(<span class="tok-type">i32</span>).init(allocator, <span class="tok-number">1</span>, .{ math.maxInt(<span class="tok-type">usize</span>), math.maxInt(<span class="tok-type">usize</span>) }),</span>
<span class="line" id="L66"> );</span>
<span class="line" id="L67">}</span>
<span class="line" id="L68"></span>
<span class="line" id="L69"><span class="tok-kw">test</span> <span class="tok-str">"Vec2D.fill"</span> {</span>
<span class="line" id="L70"> <span class="tok-kw">const</span> allocator = testing.allocator;</span>
<span class="line" id="L71"> <span class="tok-kw">var</span> vec2d = <span class="tok-kw">try</span> Vec2D(<span class="tok-type">i32</span>).init(allocator, <span class="tok-number">0</span>, .{ <span class="tok-number">2</span>, <span class="tok-number">3</span> });</span>
<span class="line" id="L72"> <span class="tok-kw">defer</span> vec2d.deinit(allocator);</span>
<span class="line" id="L73"></span>
<span class="line" id="L74"> vec2d.fill(<span class="tok-number">7</span>);</span>
<span class="line" id="L75"></span>
<span class="line" id="L76"> <span class="tok-kw">try</span> expectEqualSlices(<span class="tok-type">i32</span>, &.{ <span class="tok-number">7</span>, <span class="tok-number">7</span>, <span class="tok-number">7</span> }, <span class="tok-kw">try</span> vec2d.get(<span class="tok-number">0</span>));</span>
<span class="line" id="L77"> <span class="tok-kw">try</span> expectEqualSlices(<span class="tok-type">i32</span>, &.{ <span class="tok-number">7</span>, <span class="tok-number">7</span>, <span class="tok-number">7</span> }, <span class="tok-kw">try</span> vec2d.get(<span class="tok-number">1</span>));</span>
<span class="line" id="L78">}</span>
<span class="line" id="L79"></span>
<span class="line" id="L80"><span class="tok-kw">test</span> <span class="tok-str">"Vec2D.get"</span> {</span>
<span class="line" id="L81"> <span class="tok-kw">var</span> data = [_]<span class="tok-type">i32</span>{ <span class="tok-number">0</span>, <span class="tok-number">1</span>, <span class="tok-number">2</span>, <span class="tok-number">3</span>, <span class="tok-number">4</span>, <span class="tok-number">5</span>, <span class="tok-number">6</span>, <span class="tok-number">7</span> };</span>
<span class="line" id="L82"> <span class="tok-kw">const</span> vec2d = Vec2D(<span class="tok-type">i32</span>){</span>
<span class="line" id="L83"> .data = &data,</span>
<span class="line" id="L84"> .cols = <span class="tok-number">2</span>,</span>
<span class="line" id="L85"> };</span>
<span class="line" id="L86"></span>
<span class="line" id="L87"> <span class="tok-kw">try</span> expectEqualSlices(<span class="tok-type">i32</span>, &.{ <span class="tok-number">0</span>, <span class="tok-number">1</span> }, <span class="tok-kw">try</span> vec2d.get(<span class="tok-number">0</span>));</span>
<span class="line" id="L88"> <span class="tok-kw">try</span> expectEqualSlices(<span class="tok-type">i32</span>, &.{ <span class="tok-number">2</span>, <span class="tok-number">3</span> }, <span class="tok-kw">try</span> vec2d.get(<span class="tok-number">1</span>));</span>
<span class="line" id="L89"> <span class="tok-kw">try</span> expectEqualSlices(<span class="tok-type">i32</span>, &.{ <span class="tok-number">4</span>, <span class="tok-number">5</span> }, <span class="tok-kw">try</span> vec2d.get(<span class="tok-number">2</span>));</span>
<span class="line" id="L90"> <span class="tok-kw">try</span> expectEqualSlices(<span class="tok-type">i32</span>, &.{ <span class="tok-number">6</span>, <span class="tok-number">7</span> }, <span class="tok-kw">try</span> vec2d.get(<span class="tok-number">3</span>));</span>
<span class="line" id="L91">}</span>
<span class="line" id="L92"></span>
<span class="line" id="L93"><span class="tok-kw">test</span> <span class="tok-str">"Vec2D.getMut"</span> {</span>
<span class="line" id="L94"> <span class="tok-kw">var</span> data = [_]<span class="tok-type">i32</span>{ <span class="tok-number">0</span>, <span class="tok-number">1</span>, <span class="tok-number">2</span>, <span class="tok-number">3</span>, <span class="tok-number">4</span>, <span class="tok-number">5</span>, <span class="tok-number">6</span>, <span class="tok-number">7</span> };</span>
<span class="line" id="L95"> <span class="tok-kw">var</span> vec2d = Vec2D(<span class="tok-type">i32</span>){</span>
<span class="line" id="L96"> .data = &data,</span>
<span class="line" id="L97"> .cols = <span class="tok-number">2</span>,</span>
<span class="line" id="L98"> };</span>
<span class="line" id="L99"></span>
<span class="line" id="L100"> <span class="tok-kw">const</span> row = <span class="tok-kw">try</span> vec2d.getMut(<span class="tok-number">1</span>);</span>
<span class="line" id="L101"> row[<span class="tok-number">1</span>] = <span class="tok-number">9</span>;</span>
<span class="line" id="L102"></span>
<span class="line" id="L103"> <span class="tok-kw">try</span> expectEqualSlices(<span class="tok-type">i32</span>, &.{ <span class="tok-number">0</span>, <span class="tok-number">1</span> }, <span class="tok-kw">try</span> vec2d.get(<span class="tok-number">0</span>));</span>
<span class="line" id="L104"> <span class="tok-comment">// (1, 1) should be 9.</span>
</span>
<span class="line" id="L105"> <span class="tok-kw">try</span> expectEqualSlices(<span class="tok-type">i32</span>, &.{ <span class="tok-number">2</span>, <span class="tok-number">9</span> }, <span class="tok-kw">try</span> vec2d.get(<span class="tok-number">1</span>));</span>
<span class="line" id="L106"> <span class="tok-kw">try</span> expectEqualSlices(<span class="tok-type">i32</span>, &.{ <span class="tok-number">4</span>, <span class="tok-number">5</span> }, <span class="tok-kw">try</span> vec2d.get(<span class="tok-number">2</span>));</span>
<span class="line" id="L107"> <span class="tok-kw">try</span> expectEqualSlices(<span class="tok-type">i32</span>, &.{ <span class="tok-number">6</span>, <span class="tok-number">7</span> }, <span class="tok-kw">try</span> vec2d.get(<span class="tok-number">3</span>));</span>
<span class="line" id="L108">}</span>
<span class="line" id="L109"></span>
<span class="line" id="L110"><span class="tok-kw">test</span> <span class="tok-str">"Vec2D.get multiplication overflow"</span> {</span>
<span class="line" id="L111"> <span class="tok-kw">const</span> allocator = testing.allocator;</span>
<span class="line" id="L112"> <span class="tok-kw">var</span> matrix = <span class="tok-kw">try</span> Vec2D(<span class="tok-type">i32</span>).init(allocator, <span class="tok-number">0</span>, .{ <span class="tok-number">3</span>, <span class="tok-number">4</span> });</span>
<span class="line" id="L113"> <span class="tok-kw">defer</span> matrix.deinit(allocator);</span>
<span class="line" id="L114"></span>
<span class="line" id="L115"> <span class="tok-kw">const</span> row = (math.maxInt(<span class="tok-type">usize</span>) / <span class="tok-number">4</span>) + <span class="tok-number">1</span>;</span>
<span class="line" id="L116"> <span class="tok-kw">try</span> expectError(<span class="tok-kw">error</span>.Overflow, matrix.get(row));</span>
<span class="line" id="L117"> <span class="tok-kw">try</span> expectError(<span class="tok-kw">error</span>.Overflow, matrix.getMut(row));</span>
<span class="line" id="L118">}</span>
<span class="line" id="L119"></span>
<span class="line" id="L120"><span class="tok-kw">test</span> <span class="tok-str">"Vec2D.get addition overflow"</span> {</span>
<span class="line" id="L121"> <span class="tok-kw">const</span> allocator = testing.allocator;</span>
<span class="line" id="L122"> <span class="tok-kw">var</span> matrix = <span class="tok-kw">try</span> Vec2D(<span class="tok-type">i32</span>).init(allocator, <span class="tok-number">0</span>, .{ <span class="tok-number">3</span>, <span class="tok-number">5</span> });</span>
<span class="line" id="L123"> <span class="tok-kw">defer</span> matrix.deinit(allocator);</span>
<span class="line" id="L124"></span>
<span class="line" id="L125"> <span class="tok-kw">const</span> row = math.maxInt(<span class="tok-type">usize</span>) / <span class="tok-number">5</span>;</span>
<span class="line" id="L126"> <span class="tok-kw">try</span> expectError(<span class="tok-kw">error</span>.Overflow, matrix.get(row));</span>
<span class="line" id="L127"> <span class="tok-kw">try</span> expectError(<span class="tok-kw">error</span>.Overflow, matrix.getMut(row));</span>
<span class="line" id="L128">}</span>
<span class="line" id="L129"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/compress/lzma | repos/yazap/docs/src/std/compress/lzma/decode/lzbuffer.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../../../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> math = std.math;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> ArrayListUnmanaged = std.ArrayListUnmanaged;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-comment">/// An accumulating buffer for LZ sequences</span></span>
<span class="line" id="L8"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> LzAccumBuffer = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L9"> <span class="tok-comment">/// Buffer</span></span>
<span class="line" id="L10"> buf: ArrayListUnmanaged(<span class="tok-type">u8</span>),</span>
<span class="line" id="L11"></span>
<span class="line" id="L12"> <span class="tok-comment">/// Buffer memory limit</span></span>
<span class="line" id="L13"> memlimit: <span class="tok-type">usize</span>,</span>
<span class="line" id="L14"></span>
<span class="line" id="L15"> <span class="tok-comment">/// Total number of bytes sent through the buffer</span></span>
<span class="line" id="L16"> len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L17"></span>
<span class="line" id="L18"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(memlimit: <span class="tok-type">usize</span>) Self {</span>
<span class="line" id="L21"> <span class="tok-kw">return</span> Self{</span>
<span class="line" id="L22"> .buf = .{},</span>
<span class="line" id="L23"> .memlimit = memlimit,</span>
<span class="line" id="L24"> .len = <span class="tok-number">0</span>,</span>
<span class="line" id="L25"> };</span>
<span class="line" id="L26"> }</span>
<span class="line" id="L27"></span>
<span class="line" id="L28"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">appendByte</span>(self: *Self, allocator: Allocator, byte: <span class="tok-type">u8</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L29"> <span class="tok-kw">try</span> self.buf.append(allocator, byte);</span>
<span class="line" id="L30"> self.len += <span class="tok-number">1</span>;</span>
<span class="line" id="L31"> }</span>
<span class="line" id="L32"></span>
<span class="line" id="L33"> <span class="tok-comment">/// Reset the internal dictionary</span></span>
<span class="line" id="L34"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reset</span>(self: *Self, writer: <span class="tok-kw">anytype</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L35"> <span class="tok-kw">try</span> writer.writeAll(self.buf.items);</span>
<span class="line" id="L36"> self.buf.clearRetainingCapacity();</span>
<span class="line" id="L37"> self.len = <span class="tok-number">0</span>;</span>
<span class="line" id="L38"> }</span>
<span class="line" id="L39"></span>
<span class="line" id="L40"> <span class="tok-comment">/// Retrieve the last byte or return a default</span></span>
<span class="line" id="L41"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">lastOr</span>(self: Self, lit: <span class="tok-type">u8</span>) <span class="tok-type">u8</span> {</span>
<span class="line" id="L42"> <span class="tok-kw">const</span> buf_len = self.buf.items.len;</span>
<span class="line" id="L43"> <span class="tok-kw">return</span> <span class="tok-kw">if</span> (buf_len == <span class="tok-number">0</span>)</span>
<span class="line" id="L44"> lit</span>
<span class="line" id="L45"> <span class="tok-kw">else</span></span>
<span class="line" id="L46"> self.buf.items[buf_len - <span class="tok-number">1</span>];</span>
<span class="line" id="L47"> }</span>
<span class="line" id="L48"></span>
<span class="line" id="L49"> <span class="tok-comment">/// Retrieve the n-th last byte</span></span>
<span class="line" id="L50"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">lastN</span>(self: Self, dist: <span class="tok-type">usize</span>) !<span class="tok-type">u8</span> {</span>
<span class="line" id="L51"> <span class="tok-kw">const</span> buf_len = self.buf.items.len;</span>
<span class="line" id="L52"> <span class="tok-kw">if</span> (dist > buf_len) {</span>
<span class="line" id="L53"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L54"> }</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"> <span class="tok-kw">return</span> self.buf.items[buf_len - dist];</span>
<span class="line" id="L57"> }</span>
<span class="line" id="L58"></span>
<span class="line" id="L59"> <span class="tok-comment">/// Append a literal</span></span>
<span class="line" id="L60"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">appendLiteral</span>(</span>
<span class="line" id="L61"> self: *Self,</span>
<span class="line" id="L62"> allocator: Allocator,</span>
<span class="line" id="L63"> lit: <span class="tok-type">u8</span>,</span>
<span class="line" id="L64"> writer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L65"> ) !<span class="tok-type">void</span> {</span>
<span class="line" id="L66"> _ = writer;</span>
<span class="line" id="L67"> <span class="tok-kw">if</span> (self.len >= self.memlimit) {</span>
<span class="line" id="L68"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L69"> }</span>
<span class="line" id="L70"> <span class="tok-kw">try</span> self.buf.append(allocator, lit);</span>
<span class="line" id="L71"> self.len += <span class="tok-number">1</span>;</span>
<span class="line" id="L72"> }</span>
<span class="line" id="L73"></span>
<span class="line" id="L74"> <span class="tok-comment">/// Fetch an LZ sequence (length, distance) from inside the buffer</span></span>
<span class="line" id="L75"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">appendLz</span>(</span>
<span class="line" id="L76"> self: *Self,</span>
<span class="line" id="L77"> allocator: Allocator,</span>
<span class="line" id="L78"> len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L79"> dist: <span class="tok-type">usize</span>,</span>
<span class="line" id="L80"> writer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L81"> ) !<span class="tok-type">void</span> {</span>
<span class="line" id="L82"> _ = writer;</span>
<span class="line" id="L83"></span>
<span class="line" id="L84"> <span class="tok-kw">const</span> buf_len = self.buf.items.len;</span>
<span class="line" id="L85"> <span class="tok-kw">if</span> (dist > buf_len) {</span>
<span class="line" id="L86"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L87"> }</span>
<span class="line" id="L88"></span>
<span class="line" id="L89"> <span class="tok-kw">var</span> offset = buf_len - dist;</span>
<span class="line" id="L90"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L91"> <span class="tok-kw">while</span> (i < len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L92"> <span class="tok-kw">const</span> x = self.buf.items[offset];</span>
<span class="line" id="L93"> <span class="tok-kw">try</span> self.buf.append(allocator, x);</span>
<span class="line" id="L94"> offset += <span class="tok-number">1</span>;</span>
<span class="line" id="L95"> }</span>
<span class="line" id="L96"> self.len += len;</span>
<span class="line" id="L97"> }</span>
<span class="line" id="L98"></span>
<span class="line" id="L99"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">finish</span>(self: *Self, writer: <span class="tok-kw">anytype</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L100"> <span class="tok-kw">try</span> writer.writeAll(self.buf.items);</span>
<span class="line" id="L101"> self.buf.clearRetainingCapacity();</span>
<span class="line" id="L102"> }</span>
<span class="line" id="L103"></span>
<span class="line" id="L104"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *Self, allocator: Allocator) <span class="tok-type">void</span> {</span>
<span class="line" id="L105"> self.buf.deinit(allocator);</span>
<span class="line" id="L106"> self.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L107"> }</span>
<span class="line" id="L108">};</span>
<span class="line" id="L109"></span>
<span class="line" id="L110"><span class="tok-comment">/// A circular buffer for LZ sequences</span></span>
<span class="line" id="L111"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> LzCircularBuffer = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L112"> <span class="tok-comment">/// Circular buffer</span></span>
<span class="line" id="L113"> buf: ArrayListUnmanaged(<span class="tok-type">u8</span>),</span>
<span class="line" id="L114"></span>
<span class="line" id="L115"> <span class="tok-comment">/// Length of the buffer</span></span>
<span class="line" id="L116"> dict_size: <span class="tok-type">usize</span>,</span>
<span class="line" id="L117"></span>
<span class="line" id="L118"> <span class="tok-comment">/// Buffer memory limit</span></span>
<span class="line" id="L119"> memlimit: <span class="tok-type">usize</span>,</span>
<span class="line" id="L120"></span>
<span class="line" id="L121"> <span class="tok-comment">/// Current position</span></span>
<span class="line" id="L122"> cursor: <span class="tok-type">usize</span>,</span>
<span class="line" id="L123"></span>
<span class="line" id="L124"> <span class="tok-comment">/// Total number of bytes sent through the buffer</span></span>
<span class="line" id="L125"> len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L126"></span>
<span class="line" id="L127"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L128"></span>
<span class="line" id="L129"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(dict_size: <span class="tok-type">usize</span>, memlimit: <span class="tok-type">usize</span>) Self {</span>
<span class="line" id="L130"> <span class="tok-kw">return</span> Self{</span>
<span class="line" id="L131"> .buf = .{},</span>
<span class="line" id="L132"> .dict_size = dict_size,</span>
<span class="line" id="L133"> .memlimit = memlimit,</span>
<span class="line" id="L134"> .cursor = <span class="tok-number">0</span>,</span>
<span class="line" id="L135"> .len = <span class="tok-number">0</span>,</span>
<span class="line" id="L136"> };</span>
<span class="line" id="L137"> }</span>
<span class="line" id="L138"></span>
<span class="line" id="L139"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">get</span>(self: Self, index: <span class="tok-type">usize</span>) <span class="tok-type">u8</span> {</span>
<span class="line" id="L140"> <span class="tok-kw">return</span> <span class="tok-kw">if</span> (<span class="tok-number">0</span> <= index <span class="tok-kw">and</span> index < self.buf.items.len)</span>
<span class="line" id="L141"> self.buf.items[index]</span>
<span class="line" id="L142"> <span class="tok-kw">else</span></span>
<span class="line" id="L143"> <span class="tok-number">0</span>;</span>
<span class="line" id="L144"> }</span>
<span class="line" id="L145"></span>
<span class="line" id="L146"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">set</span>(self: *Self, allocator: Allocator, index: <span class="tok-type">usize</span>, value: <span class="tok-type">u8</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L147"> <span class="tok-kw">if</span> (index >= self.memlimit) {</span>
<span class="line" id="L148"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L149"> }</span>
<span class="line" id="L150"> <span class="tok-kw">try</span> self.buf.ensureTotalCapacity(allocator, index + <span class="tok-number">1</span>);</span>
<span class="line" id="L151"> <span class="tok-kw">while</span> (self.buf.items.len < index) {</span>
<span class="line" id="L152"> self.buf.appendAssumeCapacity(<span class="tok-number">0</span>);</span>
<span class="line" id="L153"> }</span>
<span class="line" id="L154"> self.buf.appendAssumeCapacity(value);</span>
<span class="line" id="L155"> }</span>
<span class="line" id="L156"></span>
<span class="line" id="L157"> <span class="tok-comment">/// Retrieve the last byte or return a default</span></span>
<span class="line" id="L158"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">lastOr</span>(self: Self, lit: <span class="tok-type">u8</span>) <span class="tok-type">u8</span> {</span>
<span class="line" id="L159"> <span class="tok-kw">return</span> <span class="tok-kw">if</span> (self.len == <span class="tok-number">0</span>)</span>
<span class="line" id="L160"> lit</span>
<span class="line" id="L161"> <span class="tok-kw">else</span></span>
<span class="line" id="L162"> self.get((self.dict_size + self.cursor - <span class="tok-number">1</span>) % self.dict_size);</span>
<span class="line" id="L163"> }</span>
<span class="line" id="L164"></span>
<span class="line" id="L165"> <span class="tok-comment">/// Retrieve the n-th last byte</span></span>
<span class="line" id="L166"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">lastN</span>(self: Self, dist: <span class="tok-type">usize</span>) !<span class="tok-type">u8</span> {</span>
<span class="line" id="L167"> <span class="tok-kw">if</span> (dist > self.dict_size <span class="tok-kw">or</span> dist > self.len) {</span>
<span class="line" id="L168"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L169"> }</span>
<span class="line" id="L170"></span>
<span class="line" id="L171"> <span class="tok-kw">const</span> offset = (self.dict_size + self.cursor - dist) % self.dict_size;</span>
<span class="line" id="L172"> <span class="tok-kw">return</span> self.get(offset);</span>
<span class="line" id="L173"> }</span>
<span class="line" id="L174"></span>
<span class="line" id="L175"> <span class="tok-comment">/// Append a literal</span></span>
<span class="line" id="L176"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">appendLiteral</span>(</span>
<span class="line" id="L177"> self: *Self,</span>
<span class="line" id="L178"> allocator: Allocator,</span>
<span class="line" id="L179"> lit: <span class="tok-type">u8</span>,</span>
<span class="line" id="L180"> writer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L181"> ) !<span class="tok-type">void</span> {</span>
<span class="line" id="L182"> <span class="tok-kw">try</span> self.set(allocator, self.cursor, lit);</span>
<span class="line" id="L183"> self.cursor += <span class="tok-number">1</span>;</span>
<span class="line" id="L184"> self.len += <span class="tok-number">1</span>;</span>
<span class="line" id="L185"></span>
<span class="line" id="L186"> <span class="tok-comment">// Flush the circular buffer to the output</span>
</span>
<span class="line" id="L187"> <span class="tok-kw">if</span> (self.cursor == self.dict_size) {</span>
<span class="line" id="L188"> <span class="tok-kw">try</span> writer.writeAll(self.buf.items);</span>
<span class="line" id="L189"> self.cursor = <span class="tok-number">0</span>;</span>
<span class="line" id="L190"> }</span>
<span class="line" id="L191"> }</span>
<span class="line" id="L192"></span>
<span class="line" id="L193"> <span class="tok-comment">/// Fetch an LZ sequence (length, distance) from inside the buffer</span></span>
<span class="line" id="L194"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">appendLz</span>(</span>
<span class="line" id="L195"> self: *Self,</span>
<span class="line" id="L196"> allocator: Allocator,</span>
<span class="line" id="L197"> len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L198"> dist: <span class="tok-type">usize</span>,</span>
<span class="line" id="L199"> writer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L200"> ) !<span class="tok-type">void</span> {</span>
<span class="line" id="L201"> <span class="tok-kw">if</span> (dist > self.dict_size <span class="tok-kw">or</span> dist > self.len) {</span>
<span class="line" id="L202"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L203"> }</span>
<span class="line" id="L204"></span>
<span class="line" id="L205"> <span class="tok-kw">var</span> offset = (self.dict_size + self.cursor - dist) % self.dict_size;</span>
<span class="line" id="L206"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L207"> <span class="tok-kw">while</span> (i < len) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L208"> <span class="tok-kw">const</span> x = self.get(offset);</span>
<span class="line" id="L209"> <span class="tok-kw">try</span> self.appendLiteral(allocator, x, writer);</span>
<span class="line" id="L210"> offset += <span class="tok-number">1</span>;</span>
<span class="line" id="L211"> <span class="tok-kw">if</span> (offset == self.dict_size) {</span>
<span class="line" id="L212"> offset = <span class="tok-number">0</span>;</span>
<span class="line" id="L213"> }</span>
<span class="line" id="L214"> }</span>
<span class="line" id="L215"> }</span>
<span class="line" id="L216"></span>
<span class="line" id="L217"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">finish</span>(self: *Self, writer: <span class="tok-kw">anytype</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L218"> <span class="tok-kw">if</span> (self.cursor > <span class="tok-number">0</span>) {</span>
<span class="line" id="L219"> <span class="tok-kw">try</span> writer.writeAll(self.buf.items[<span class="tok-number">0</span>..self.cursor]);</span>
<span class="line" id="L220"> self.cursor = <span class="tok-number">0</span>;</span>
<span class="line" id="L221"> }</span>
<span class="line" id="L222"> }</span>
<span class="line" id="L223"></span>
<span class="line" id="L224"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *Self, allocator: Allocator) <span class="tok-type">void</span> {</span>
<span class="line" id="L225"> self.buf.deinit(allocator);</span>
<span class="line" id="L226"> self.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L227"> }</span>
<span class="line" id="L228">};</span>
<span class="line" id="L229"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/compress/lzma | repos/yazap/docs/src/std/compress/lzma/decode/rangecoder.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../../../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> mem = std.mem;</span>
<span class="line" id="L3"></span>
<span class="line" id="L4"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> RangeDecoder = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L5"> range: <span class="tok-type">u32</span>,</span>
<span class="line" id="L6"> code: <span class="tok-type">u32</span>,</span>
<span class="line" id="L7"></span>
<span class="line" id="L8"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(reader: <span class="tok-kw">anytype</span>) !RangeDecoder {</span>
<span class="line" id="L9"> <span class="tok-kw">const</span> reserved = <span class="tok-kw">try</span> reader.readByte();</span>
<span class="line" id="L10"> <span class="tok-kw">if</span> (reserved != <span class="tok-number">0</span>) {</span>
<span class="line" id="L11"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L12"> }</span>
<span class="line" id="L13"> <span class="tok-kw">return</span> RangeDecoder{</span>
<span class="line" id="L14"> .range = <span class="tok-number">0xFFFF_FFFF</span>,</span>
<span class="line" id="L15"> .code = <span class="tok-kw">try</span> reader.readIntBig(<span class="tok-type">u32</span>),</span>
<span class="line" id="L16"> };</span>
<span class="line" id="L17"> }</span>
<span class="line" id="L18"></span>
<span class="line" id="L19"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">fromParts</span>(</span>
<span class="line" id="L20"> range: <span class="tok-type">u32</span>,</span>
<span class="line" id="L21"> code: <span class="tok-type">u32</span>,</span>
<span class="line" id="L22"> ) RangeDecoder {</span>
<span class="line" id="L23"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L24"> .range = range,</span>
<span class="line" id="L25"> .code = code,</span>
<span class="line" id="L26"> };</span>
<span class="line" id="L27"> }</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">set</span>(self: *RangeDecoder, range: <span class="tok-type">u32</span>, code: <span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L30"> self.range = range;</span>
<span class="line" id="L31"> self.code = code;</span>
<span class="line" id="L32"> }</span>
<span class="line" id="L33"></span>
<span class="line" id="L34"> <span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">isFinished</span>(self: RangeDecoder) <span class="tok-type">bool</span> {</span>
<span class="line" id="L35"> <span class="tok-kw">return</span> self.code == <span class="tok-number">0</span>;</span>
<span class="line" id="L36"> }</span>
<span class="line" id="L37"></span>
<span class="line" id="L38"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">normalize</span>(self: *RangeDecoder, reader: <span class="tok-kw">anytype</span>) !<span class="tok-type">void</span> {</span>
<span class="line" id="L39"> <span class="tok-kw">if</span> (self.range < <span class="tok-number">0x0100_0000</span>) {</span>
<span class="line" id="L40"> self.range <<= <span class="tok-number">8</span>;</span>
<span class="line" id="L41"> self.code = (self.code << <span class="tok-number">8</span>) ^ <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-kw">try</span> reader.readByte());</span>
<span class="line" id="L42"> }</span>
<span class="line" id="L43"> }</span>
<span class="line" id="L44"></span>
<span class="line" id="L45"> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">getBit</span>(self: *RangeDecoder, reader: <span class="tok-kw">anytype</span>) !<span class="tok-type">bool</span> {</span>
<span class="line" id="L46"> self.range >>= <span class="tok-number">1</span>;</span>
<span class="line" id="L47"></span>
<span class="line" id="L48"> <span class="tok-kw">const</span> bit = self.code >= self.range;</span>
<span class="line" id="L49"> <span class="tok-kw">if</span> (bit)</span>
<span class="line" id="L50"> self.code -= self.range;</span>
<span class="line" id="L51"></span>
<span class="line" id="L52"> <span class="tok-kw">try</span> self.normalize(reader);</span>
<span class="line" id="L53"> <span class="tok-kw">return</span> bit;</span>
<span class="line" id="L54"> }</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">get</span>(self: *RangeDecoder, reader: <span class="tok-kw">anytype</span>, count: <span class="tok-type">usize</span>) !<span class="tok-type">u32</span> {</span>
<span class="line" id="L57"> <span class="tok-kw">var</span> result: <span class="tok-type">u32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L58"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L59"> <span class="tok-kw">while</span> (i < count) : (i += <span class="tok-number">1</span>)</span>
<span class="line" id="L60"> result = (result << <span class="tok-number">1</span>) ^ <span class="tok-builtin">@intFromBool</span>(<span class="tok-kw">try</span> self.getBit(reader));</span>
<span class="line" id="L61"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L62"> }</span>
<span class="line" id="L63"></span>
<span class="line" id="L64"> <span class="tok-kw">pub</span> <span class="tok-kw">inline</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeBit</span>(self: *RangeDecoder, reader: <span class="tok-kw">anytype</span>, prob: *<span class="tok-type">u16</span>, update: <span class="tok-type">bool</span>) !<span class="tok-type">bool</span> {</span>
<span class="line" id="L65"> <span class="tok-kw">const</span> bound = (self.range >> <span class="tok-number">11</span>) * prob.*;</span>
<span class="line" id="L66"></span>
<span class="line" id="L67"> <span class="tok-kw">if</span> (self.code < bound) {</span>
<span class="line" id="L68"> <span class="tok-kw">if</span> (update)</span>
<span class="line" id="L69"> prob.* += (<span class="tok-number">0x800</span> - prob.*) >> <span class="tok-number">5</span>;</span>
<span class="line" id="L70"> self.range = bound;</span>
<span class="line" id="L71"></span>
<span class="line" id="L72"> <span class="tok-kw">try</span> self.normalize(reader);</span>
<span class="line" id="L73"> <span class="tok-kw">return</span> <span class="tok-null">false</span>;</span>
<span class="line" id="L74"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L75"> <span class="tok-kw">if</span> (update)</span>
<span class="line" id="L76"> prob.* -= prob.* >> <span class="tok-number">5</span>;</span>
<span class="line" id="L77"> self.code -= bound;</span>
<span class="line" id="L78"> self.range -= bound;</span>
<span class="line" id="L79"></span>
<span class="line" id="L80"> <span class="tok-kw">try</span> self.normalize(reader);</span>
<span class="line" id="L81"> <span class="tok-kw">return</span> <span class="tok-null">true</span>;</span>
<span class="line" id="L82"> }</span>
<span class="line" id="L83"> }</span>
<span class="line" id="L84"></span>
<span class="line" id="L85"> <span class="tok-kw">fn</span> <span class="tok-fn">parseBitTree</span>(</span>
<span class="line" id="L86"> self: *RangeDecoder,</span>
<span class="line" id="L87"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L88"> num_bits: <span class="tok-type">u5</span>,</span>
<span class="line" id="L89"> probs: []<span class="tok-type">u16</span>,</span>
<span class="line" id="L90"> update: <span class="tok-type">bool</span>,</span>
<span class="line" id="L91"> ) !<span class="tok-type">u32</span> {</span>
<span class="line" id="L92"> <span class="tok-kw">var</span> tmp: <span class="tok-type">u32</span> = <span class="tok-number">1</span>;</span>
<span class="line" id="L93"> <span class="tok-kw">var</span> i: <span class="tok-builtin">@TypeOf</span>(num_bits) = <span class="tok-number">0</span>;</span>
<span class="line" id="L94"> <span class="tok-kw">while</span> (i < num_bits) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L95"> <span class="tok-kw">const</span> bit = <span class="tok-kw">try</span> self.decodeBit(reader, &probs[tmp], update);</span>
<span class="line" id="L96"> tmp = (tmp << <span class="tok-number">1</span>) ^ <span class="tok-builtin">@intFromBool</span>(bit);</span>
<span class="line" id="L97"> }</span>
<span class="line" id="L98"> <span class="tok-kw">return</span> tmp - (<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">1</span>) << num_bits);</span>
<span class="line" id="L99"> }</span>
<span class="line" id="L100"></span>
<span class="line" id="L101"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parseReverseBitTree</span>(</span>
<span class="line" id="L102"> self: *RangeDecoder,</span>
<span class="line" id="L103"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L104"> num_bits: <span class="tok-type">u5</span>,</span>
<span class="line" id="L105"> probs: []<span class="tok-type">u16</span>,</span>
<span class="line" id="L106"> offset: <span class="tok-type">usize</span>,</span>
<span class="line" id="L107"> update: <span class="tok-type">bool</span>,</span>
<span class="line" id="L108"> ) !<span class="tok-type">u32</span> {</span>
<span class="line" id="L109"> <span class="tok-kw">var</span> result: <span class="tok-type">u32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L110"> <span class="tok-kw">var</span> tmp: <span class="tok-type">usize</span> = <span class="tok-number">1</span>;</span>
<span class="line" id="L111"> <span class="tok-kw">var</span> i: <span class="tok-builtin">@TypeOf</span>(num_bits) = <span class="tok-number">0</span>;</span>
<span class="line" id="L112"> <span class="tok-kw">while</span> (i < num_bits) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L113"> <span class="tok-kw">const</span> bit = <span class="tok-builtin">@intFromBool</span>(<span class="tok-kw">try</span> self.decodeBit(reader, &probs[offset + tmp], update));</span>
<span class="line" id="L114"> tmp = (tmp << <span class="tok-number">1</span>) ^ bit;</span>
<span class="line" id="L115"> result ^= <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, bit) << i;</span>
<span class="line" id="L116"> }</span>
<span class="line" id="L117"> <span class="tok-kw">return</span> result;</span>
<span class="line" id="L118"> }</span>
<span class="line" id="L119">};</span>
<span class="line" id="L120"></span>
<span class="line" id="L121"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">BitTree</span>(<span class="tok-kw">comptime</span> num_bits: <span class="tok-type">usize</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L122"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L123"> probs: [<span class="tok-number">1</span> << num_bits]<span class="tok-type">u16</span> = .{<span class="tok-number">0x400</span>} ** (<span class="tok-number">1</span> << num_bits),</span>
<span class="line" id="L124"></span>
<span class="line" id="L125"> <span class="tok-kw">const</span> Self = <span class="tok-builtin">@This</span>();</span>
<span class="line" id="L126"></span>
<span class="line" id="L127"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parse</span>(</span>
<span class="line" id="L128"> self: *Self,</span>
<span class="line" id="L129"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L130"> decoder: *RangeDecoder,</span>
<span class="line" id="L131"> update: <span class="tok-type">bool</span>,</span>
<span class="line" id="L132"> ) !<span class="tok-type">u32</span> {</span>
<span class="line" id="L133"> <span class="tok-kw">return</span> decoder.parseBitTree(reader, num_bits, &self.probs, update);</span>
<span class="line" id="L134"> }</span>
<span class="line" id="L135"></span>
<span class="line" id="L136"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">parseReverse</span>(</span>
<span class="line" id="L137"> self: *Self,</span>
<span class="line" id="L138"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L139"> decoder: *RangeDecoder,</span>
<span class="line" id="L140"> update: <span class="tok-type">bool</span>,</span>
<span class="line" id="L141"> ) !<span class="tok-type">u32</span> {</span>
<span class="line" id="L142"> <span class="tok-kw">return</span> decoder.parseReverseBitTree(reader, num_bits, &self.probs, <span class="tok-number">0</span>, update);</span>
<span class="line" id="L143"> }</span>
<span class="line" id="L144"></span>
<span class="line" id="L145"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reset</span>(self: *Self) <span class="tok-type">void</span> {</span>
<span class="line" id="L146"> <span class="tok-builtin">@memset</span>(&self.probs, <span class="tok-number">0x400</span>);</span>
<span class="line" id="L147"> }</span>
<span class="line" id="L148"> };</span>
<span class="line" id="L149">}</span>
<span class="line" id="L150"></span>
<span class="line" id="L151"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> LenDecoder = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L152"> choice: <span class="tok-type">u16</span> = <span class="tok-number">0x400</span>,</span>
<span class="line" id="L153"> choice2: <span class="tok-type">u16</span> = <span class="tok-number">0x400</span>,</span>
<span class="line" id="L154"> low_coder: [<span class="tok-number">16</span>]BitTree(<span class="tok-number">3</span>) = .{.{}} ** <span class="tok-number">16</span>,</span>
<span class="line" id="L155"> mid_coder: [<span class="tok-number">16</span>]BitTree(<span class="tok-number">3</span>) = .{.{}} ** <span class="tok-number">16</span>,</span>
<span class="line" id="L156"> high_coder: BitTree(<span class="tok-number">8</span>) = .{},</span>
<span class="line" id="L157"></span>
<span class="line" id="L158"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decode</span>(</span>
<span class="line" id="L159"> self: *LenDecoder,</span>
<span class="line" id="L160"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L161"> decoder: *RangeDecoder,</span>
<span class="line" id="L162"> pos_state: <span class="tok-type">usize</span>,</span>
<span class="line" id="L163"> update: <span class="tok-type">bool</span>,</span>
<span class="line" id="L164"> ) !<span class="tok-type">usize</span> {</span>
<span class="line" id="L165"> <span class="tok-kw">if</span> (!<span class="tok-kw">try</span> decoder.decodeBit(reader, &self.choice, update)) {</span>
<span class="line" id="L166"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-kw">try</span> self.low_coder[pos_state].parse(reader, decoder, update));</span>
<span class="line" id="L167"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (!<span class="tok-kw">try</span> decoder.decodeBit(reader, &self.choice2, update)) {</span>
<span class="line" id="L168"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-kw">try</span> self.mid_coder[pos_state].parse(reader, decoder, update)) + <span class="tok-number">8</span>;</span>
<span class="line" id="L169"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L170"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-kw">try</span> self.high_coder.parse(reader, decoder, update)) + <span class="tok-number">16</span>;</span>
<span class="line" id="L171"> }</span>
<span class="line" id="L172"> }</span>
<span class="line" id="L173"></span>
<span class="line" id="L174"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reset</span>(self: *LenDecoder) <span class="tok-type">void</span> {</span>
<span class="line" id="L175"> self.choice = <span class="tok-number">0x400</span>;</span>
<span class="line" id="L176"> self.choice2 = <span class="tok-number">0x400</span>;</span>
<span class="line" id="L177"> <span class="tok-kw">for</span> (&self.low_coder) |*t| t.reset();</span>
<span class="line" id="L178"> <span class="tok-kw">for</span> (&self.mid_coder) |*t| t.reset();</span>
<span class="line" id="L179"> self.high_coder.reset();</span>
<span class="line" id="L180"> }</span>
<span class="line" id="L181">};</span>
<span class="line" id="L182"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/compress | repos/yazap/docs/src/std/compress/zstandard/types.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> frame = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L2"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Kind = <span class="tok-kw">enum</span> { zstandard, skippable };</span>
<span class="line" id="L3"></span>
<span class="line" id="L4"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Zstandard = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L5"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> magic_number = <span class="tok-number">0xFD2FB528</span>;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"> header: Header,</span>
<span class="line" id="L8"> data_blocks: []Block,</span>
<span class="line" id="L9"> checksum: ?<span class="tok-type">u32</span>,</span>
<span class="line" id="L10"></span>
<span class="line" id="L11"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Header = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L12"> descriptor: Descriptor,</span>
<span class="line" id="L13"> window_descriptor: ?<span class="tok-type">u8</span>,</span>
<span class="line" id="L14"> dictionary_id: ?<span class="tok-type">u32</span>,</span>
<span class="line" id="L15"> content_size: ?<span class="tok-type">u64</span>,</span>
<span class="line" id="L16"></span>
<span class="line" id="L17"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Descriptor = <span class="tok-kw">packed</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L18"> dictionary_id_flag: <span class="tok-type">u2</span>,</span>
<span class="line" id="L19"> content_checksum_flag: <span class="tok-type">bool</span>,</span>
<span class="line" id="L20"> reserved: <span class="tok-type">bool</span>,</span>
<span class="line" id="L21"> unused: <span class="tok-type">bool</span>,</span>
<span class="line" id="L22"> single_segment_flag: <span class="tok-type">bool</span>,</span>
<span class="line" id="L23"> content_size_flag: <span class="tok-type">u2</span>,</span>
<span class="line" id="L24"> };</span>
<span class="line" id="L25"> };</span>
<span class="line" id="L26"></span>
<span class="line" id="L27"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Block = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L28"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Header = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L29"> last_block: <span class="tok-type">bool</span>,</span>
<span class="line" id="L30"> block_type: Block.Type,</span>
<span class="line" id="L31"> block_size: <span class="tok-type">u21</span>,</span>
<span class="line" id="L32"> };</span>
<span class="line" id="L33"></span>
<span class="line" id="L34"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Type = <span class="tok-kw">enum</span>(<span class="tok-type">u2</span>) {</span>
<span class="line" id="L35"> raw,</span>
<span class="line" id="L36"> rle,</span>
<span class="line" id="L37"> compressed,</span>
<span class="line" id="L38"> reserved,</span>
<span class="line" id="L39"> };</span>
<span class="line" id="L40"> };</span>
<span class="line" id="L41"> };</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Skippable = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L44"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> magic_number_min = <span class="tok-number">0x184D2A50</span>;</span>
<span class="line" id="L45"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> magic_number_max = <span class="tok-number">0x184D2A5F</span>;</span>
<span class="line" id="L46"></span>
<span class="line" id="L47"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Header = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L48"> magic_number: <span class="tok-type">u32</span>,</span>
<span class="line" id="L49"> frame_size: <span class="tok-type">u32</span>,</span>
<span class="line" id="L50"> };</span>
<span class="line" id="L51"> };</span>
<span class="line" id="L52">};</span>
<span class="line" id="L53"></span>
<span class="line" id="L54"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> compressed_block = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L55"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> LiteralsSection = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L56"> header: Header,</span>
<span class="line" id="L57"> huffman_tree: ?HuffmanTree,</span>
<span class="line" id="L58"> streams: Streams,</span>
<span class="line" id="L59"></span>
<span class="line" id="L60"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Streams = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L61"> one: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L62"> four: [<span class="tok-number">4</span>][]<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L63"> };</span>
<span class="line" id="L64"></span>
<span class="line" id="L65"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Header = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L66"> block_type: BlockType,</span>
<span class="line" id="L67"> size_format: <span class="tok-type">u2</span>,</span>
<span class="line" id="L68"> regenerated_size: <span class="tok-type">u20</span>,</span>
<span class="line" id="L69"> compressed_size: ?<span class="tok-type">u18</span>,</span>
<span class="line" id="L70"> };</span>
<span class="line" id="L71"></span>
<span class="line" id="L72"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> BlockType = <span class="tok-kw">enum</span>(<span class="tok-type">u2</span>) {</span>
<span class="line" id="L73"> raw,</span>
<span class="line" id="L74"> rle,</span>
<span class="line" id="L75"> compressed,</span>
<span class="line" id="L76"> treeless,</span>
<span class="line" id="L77"> };</span>
<span class="line" id="L78"></span>
<span class="line" id="L79"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> HuffmanTree = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L80"> max_bit_count: <span class="tok-type">u4</span>,</span>
<span class="line" id="L81"> symbol_count_minus_one: <span class="tok-type">u8</span>,</span>
<span class="line" id="L82"> nodes: [<span class="tok-number">256</span>]PrefixedSymbol,</span>
<span class="line" id="L83"></span>
<span class="line" id="L84"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> PrefixedSymbol = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L85"> symbol: <span class="tok-type">u8</span>,</span>
<span class="line" id="L86"> prefix: <span class="tok-type">u16</span>,</span>
<span class="line" id="L87"> weight: <span class="tok-type">u4</span>,</span>
<span class="line" id="L88"> };</span>
<span class="line" id="L89"></span>
<span class="line" id="L90"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Result = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L91"> symbol: <span class="tok-type">u8</span>,</span>
<span class="line" id="L92"> index: <span class="tok-type">usize</span>,</span>
<span class="line" id="L93"> };</span>
<span class="line" id="L94"></span>
<span class="line" id="L95"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">query</span>(self: HuffmanTree, index: <span class="tok-type">usize</span>, prefix: <span class="tok-type">u16</span>) <span class="tok-kw">error</span>{NotFound}!Result {</span>
<span class="line" id="L96"> <span class="tok-kw">var</span> node = self.nodes[index];</span>
<span class="line" id="L97"> <span class="tok-kw">const</span> weight = node.weight;</span>
<span class="line" id="L98"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = index;</span>
<span class="line" id="L99"> <span class="tok-kw">while</span> (node.weight == weight) {</span>
<span class="line" id="L100"> <span class="tok-kw">if</span> (node.prefix == prefix) <span class="tok-kw">return</span> Result{ .symbol = node.symbol };</span>
<span class="line" id="L101"> <span class="tok-kw">if</span> (i == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.NotFound;</span>
<span class="line" id="L102"> i -= <span class="tok-number">1</span>;</span>
<span class="line" id="L103"> node = self.nodes[i];</span>
<span class="line" id="L104"> }</span>
<span class="line" id="L105"> <span class="tok-kw">return</span> Result{ .index = i };</span>
<span class="line" id="L106"> }</span>
<span class="line" id="L107"></span>
<span class="line" id="L108"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">weightToBitCount</span>(weight: <span class="tok-type">u4</span>, max_bit_count: <span class="tok-type">u4</span>) <span class="tok-type">u4</span> {</span>
<span class="line" id="L109"> <span class="tok-kw">return</span> <span class="tok-kw">if</span> (weight == <span class="tok-number">0</span>) <span class="tok-number">0</span> <span class="tok-kw">else</span> ((max_bit_count + <span class="tok-number">1</span>) - weight);</span>
<span class="line" id="L110"> }</span>
<span class="line" id="L111"> };</span>
<span class="line" id="L112"></span>
<span class="line" id="L113"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> StreamCount = <span class="tok-kw">enum</span> { one, four };</span>
<span class="line" id="L114"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">streamCount</span>(size_format: <span class="tok-type">u2</span>, block_type: BlockType) StreamCount {</span>
<span class="line" id="L115"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (block_type) {</span>
<span class="line" id="L116"> .raw, .rle => .one,</span>
<span class="line" id="L117"> .compressed, .treeless => <span class="tok-kw">if</span> (size_format == <span class="tok-number">0</span>) .one <span class="tok-kw">else</span> .four,</span>
<span class="line" id="L118"> };</span>
<span class="line" id="L119"> }</span>
<span class="line" id="L120"> };</span>
<span class="line" id="L121"></span>
<span class="line" id="L122"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> SequencesSection = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L123"> header: SequencesSection.Header,</span>
<span class="line" id="L124"> literals_length_table: Table,</span>
<span class="line" id="L125"> offset_table: Table,</span>
<span class="line" id="L126"> match_length_table: Table,</span>
<span class="line" id="L127"></span>
<span class="line" id="L128"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Header = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L129"> sequence_count: <span class="tok-type">u24</span>,</span>
<span class="line" id="L130"> match_lengths: Mode,</span>
<span class="line" id="L131"> offsets: Mode,</span>
<span class="line" id="L132"> literal_lengths: Mode,</span>
<span class="line" id="L133"></span>
<span class="line" id="L134"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Mode = <span class="tok-kw">enum</span>(<span class="tok-type">u2</span>) {</span>
<span class="line" id="L135"> predefined,</span>
<span class="line" id="L136"> rle,</span>
<span class="line" id="L137"> fse,</span>
<span class="line" id="L138"> repeat,</span>
<span class="line" id="L139"> };</span>
<span class="line" id="L140"> };</span>
<span class="line" id="L141"> };</span>
<span class="line" id="L142"></span>
<span class="line" id="L143"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Table = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L144"> fse: []<span class="tok-kw">const</span> Fse,</span>
<span class="line" id="L145"> rle: <span class="tok-type">u8</span>,</span>
<span class="line" id="L146"></span>
<span class="line" id="L147"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> Fse = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L148"> symbol: <span class="tok-type">u8</span>,</span>
<span class="line" id="L149"> baseline: <span class="tok-type">u16</span>,</span>
<span class="line" id="L150"> bits: <span class="tok-type">u8</span>,</span>
<span class="line" id="L151"> };</span>
<span class="line" id="L152"> };</span>
<span class="line" id="L153"></span>
<span class="line" id="L154"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> literals_length_code_table = [<span class="tok-number">36</span>]<span class="tok-kw">struct</span> { <span class="tok-type">u32</span>, <span class="tok-type">u5</span> }{</span>
<span class="line" id="L155"> .{ <span class="tok-number">0</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">1</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">2</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">3</span>, <span class="tok-number">0</span> },</span>
<span class="line" id="L156"> .{ <span class="tok-number">4</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">5</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">6</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">7</span>, <span class="tok-number">0</span> },</span>
<span class="line" id="L157"> .{ <span class="tok-number">8</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">9</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">10</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">11</span>, <span class="tok-number">0</span> },</span>
<span class="line" id="L158"> .{ <span class="tok-number">12</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">13</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">14</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">15</span>, <span class="tok-number">0</span> },</span>
<span class="line" id="L159"> .{ <span class="tok-number">16</span>, <span class="tok-number">1</span> }, .{ <span class="tok-number">18</span>, <span class="tok-number">1</span> }, .{ <span class="tok-number">20</span>, <span class="tok-number">1</span> }, .{ <span class="tok-number">22</span>, <span class="tok-number">1</span> },</span>
<span class="line" id="L160"> .{ <span class="tok-number">24</span>, <span class="tok-number">2</span> }, .{ <span class="tok-number">28</span>, <span class="tok-number">2</span> }, .{ <span class="tok-number">32</span>, <span class="tok-number">3</span> }, .{ <span class="tok-number">40</span>, <span class="tok-number">3</span> },</span>
<span class="line" id="L161"> .{ <span class="tok-number">48</span>, <span class="tok-number">4</span> }, .{ <span class="tok-number">64</span>, <span class="tok-number">6</span> }, .{ <span class="tok-number">128</span>, <span class="tok-number">7</span> }, .{ <span class="tok-number">256</span>, <span class="tok-number">8</span> },</span>
<span class="line" id="L162"> .{ <span class="tok-number">512</span>, <span class="tok-number">9</span> }, .{ <span class="tok-number">1024</span>, <span class="tok-number">10</span> }, .{ <span class="tok-number">2048</span>, <span class="tok-number">11</span> }, .{ <span class="tok-number">4096</span>, <span class="tok-number">12</span> },</span>
<span class="line" id="L163"> .{ <span class="tok-number">8192</span>, <span class="tok-number">13</span> }, .{ <span class="tok-number">16384</span>, <span class="tok-number">14</span> }, .{ <span class="tok-number">32768</span>, <span class="tok-number">15</span> }, .{ <span class="tok-number">65536</span>, <span class="tok-number">16</span> },</span>
<span class="line" id="L164"> };</span>
<span class="line" id="L165"></span>
<span class="line" id="L166"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> match_length_code_table = [<span class="tok-number">53</span>]<span class="tok-kw">struct</span> { <span class="tok-type">u32</span>, <span class="tok-type">u5</span> }{</span>
<span class="line" id="L167"> .{ <span class="tok-number">3</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">4</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">5</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">6</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">7</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">8</span>, <span class="tok-number">0</span> },</span>
<span class="line" id="L168"> .{ <span class="tok-number">9</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">10</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">11</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">12</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">13</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">14</span>, <span class="tok-number">0</span> },</span>
<span class="line" id="L169"> .{ <span class="tok-number">15</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">16</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">17</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">18</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">19</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">20</span>, <span class="tok-number">0</span> },</span>
<span class="line" id="L170"> .{ <span class="tok-number">21</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">22</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">23</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">24</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">25</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">26</span>, <span class="tok-number">0</span> },</span>
<span class="line" id="L171"> .{ <span class="tok-number">27</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">28</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">29</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">30</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">31</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">32</span>, <span class="tok-number">0</span> },</span>
<span class="line" id="L172"> .{ <span class="tok-number">33</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">34</span>, <span class="tok-number">0</span> }, .{ <span class="tok-number">35</span>, <span class="tok-number">1</span> }, .{ <span class="tok-number">37</span>, <span class="tok-number">1</span> }, .{ <span class="tok-number">39</span>, <span class="tok-number">1</span> }, .{ <span class="tok-number">41</span>, <span class="tok-number">1</span> },</span>
<span class="line" id="L173"> .{ <span class="tok-number">43</span>, <span class="tok-number">2</span> }, .{ <span class="tok-number">47</span>, <span class="tok-number">2</span> }, .{ <span class="tok-number">51</span>, <span class="tok-number">3</span> }, .{ <span class="tok-number">59</span>, <span class="tok-number">3</span> }, .{ <span class="tok-number">67</span>, <span class="tok-number">4</span> }, .{ <span class="tok-number">83</span>, <span class="tok-number">4</span> },</span>
<span class="line" id="L174"> .{ <span class="tok-number">99</span>, <span class="tok-number">5</span> }, .{ <span class="tok-number">131</span>, <span class="tok-number">7</span> }, .{ <span class="tok-number">259</span>, <span class="tok-number">8</span> }, .{ <span class="tok-number">515</span>, <span class="tok-number">9</span> }, .{ <span class="tok-number">1027</span>, <span class="tok-number">10</span> }, .{ <span class="tok-number">2051</span>, <span class="tok-number">11</span> },</span>
<span class="line" id="L175"> .{ <span class="tok-number">4099</span>, <span class="tok-number">12</span> }, .{ <span class="tok-number">8195</span>, <span class="tok-number">13</span> }, .{ <span class="tok-number">16387</span>, <span class="tok-number">14</span> }, .{ <span class="tok-number">32771</span>, <span class="tok-number">15</span> }, .{ <span class="tok-number">65539</span>, <span class="tok-number">16</span> },</span>
<span class="line" id="L176"> };</span>
<span class="line" id="L177"></span>
<span class="line" id="L178"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> literals_length_default_distribution = [<span class="tok-number">36</span>]<span class="tok-type">i16</span>{</span>
<span class="line" id="L179"> <span class="tok-number">4</span>, <span class="tok-number">3</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>,</span>
<span class="line" id="L180"> <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">3</span>, <span class="tok-number">2</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>,</span>
<span class="line" id="L181"> -<span class="tok-number">1</span>, -<span class="tok-number">1</span>, -<span class="tok-number">1</span>, -<span class="tok-number">1</span>,</span>
<span class="line" id="L182"> };</span>
<span class="line" id="L183"></span>
<span class="line" id="L184"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> match_lengths_default_distribution = [<span class="tok-number">53</span>]<span class="tok-type">i16</span>{</span>
<span class="line" id="L185"> <span class="tok-number">1</span>, <span class="tok-number">4</span>, <span class="tok-number">3</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>,</span>
<span class="line" id="L186"> <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>,</span>
<span class="line" id="L187"> <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, -<span class="tok-number">1</span>, -<span class="tok-number">1</span>,</span>
<span class="line" id="L188"> -<span class="tok-number">1</span>, -<span class="tok-number">1</span>, -<span class="tok-number">1</span>, -<span class="tok-number">1</span>, -<span class="tok-number">1</span>,</span>
<span class="line" id="L189"> };</span>
<span class="line" id="L190"></span>
<span class="line" id="L191"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> offset_codes_default_distribution = [<span class="tok-number">29</span>]<span class="tok-type">i16</span>{</span>
<span class="line" id="L192"> <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>,</span>
<span class="line" id="L193"> <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, <span class="tok-number">1</span>, -<span class="tok-number">1</span>, -<span class="tok-number">1</span>, -<span class="tok-number">1</span>, -<span class="tok-number">1</span>, -<span class="tok-number">1</span>,</span>
<span class="line" id="L194"> };</span>
<span class="line" id="L195"></span>
<span class="line" id="L196"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> predefined_literal_fse_table = Table{</span>
<span class="line" id="L197"> .fse = &[<span class="tok-number">64</span>]Table.Fse{</span>
<span class="line" id="L198"> .{ .symbol = <span class="tok-number">0</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L199"> .{ .symbol = <span class="tok-number">0</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">16</span> },</span>
<span class="line" id="L200"> .{ .symbol = <span class="tok-number">1</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L201"> .{ .symbol = <span class="tok-number">3</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L202"> .{ .symbol = <span class="tok-number">4</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L203"> .{ .symbol = <span class="tok-number">6</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L204"> .{ .symbol = <span class="tok-number">7</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L205"> .{ .symbol = <span class="tok-number">9</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L206"> .{ .symbol = <span class="tok-number">10</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L207"> .{ .symbol = <span class="tok-number">12</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L208"> .{ .symbol = <span class="tok-number">14</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L209"> .{ .symbol = <span class="tok-number">16</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L210"> .{ .symbol = <span class="tok-number">18</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L211"> .{ .symbol = <span class="tok-number">19</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L212"> .{ .symbol = <span class="tok-number">21</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L213"> .{ .symbol = <span class="tok-number">22</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L214"> .{ .symbol = <span class="tok-number">24</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L215"> .{ .symbol = <span class="tok-number">25</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L216"> .{ .symbol = <span class="tok-number">26</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L217"> .{ .symbol = <span class="tok-number">27</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L218"> .{ .symbol = <span class="tok-number">29</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L219"> .{ .symbol = <span class="tok-number">31</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L220"> .{ .symbol = <span class="tok-number">0</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L221"> .{ .symbol = <span class="tok-number">1</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L222"> .{ .symbol = <span class="tok-number">2</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L223"> .{ .symbol = <span class="tok-number">4</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L224"> .{ .symbol = <span class="tok-number">5</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L225"> .{ .symbol = <span class="tok-number">7</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L226"> .{ .symbol = <span class="tok-number">8</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L227"> .{ .symbol = <span class="tok-number">10</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L228"> .{ .symbol = <span class="tok-number">11</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L229"> .{ .symbol = <span class="tok-number">13</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L230"> .{ .symbol = <span class="tok-number">16</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L231"> .{ .symbol = <span class="tok-number">17</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L232"> .{ .symbol = <span class="tok-number">19</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L233"> .{ .symbol = <span class="tok-number">20</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L234"> .{ .symbol = <span class="tok-number">22</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L235"> .{ .symbol = <span class="tok-number">23</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L236"> .{ .symbol = <span class="tok-number">25</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L237"> .{ .symbol = <span class="tok-number">25</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">16</span> },</span>
<span class="line" id="L238"> .{ .symbol = <span class="tok-number">26</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L239"> .{ .symbol = <span class="tok-number">28</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L240"> .{ .symbol = <span class="tok-number">30</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L241"> .{ .symbol = <span class="tok-number">0</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">48</span> },</span>
<span class="line" id="L242"> .{ .symbol = <span class="tok-number">1</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">16</span> },</span>
<span class="line" id="L243"> .{ .symbol = <span class="tok-number">2</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L244"> .{ .symbol = <span class="tok-number">3</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L245"> .{ .symbol = <span class="tok-number">5</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L246"> .{ .symbol = <span class="tok-number">6</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L247"> .{ .symbol = <span class="tok-number">8</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L248"> .{ .symbol = <span class="tok-number">9</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L249"> .{ .symbol = <span class="tok-number">11</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L250"> .{ .symbol = <span class="tok-number">12</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L251"> .{ .symbol = <span class="tok-number">15</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L252"> .{ .symbol = <span class="tok-number">17</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L253"> .{ .symbol = <span class="tok-number">18</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L254"> .{ .symbol = <span class="tok-number">20</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L255"> .{ .symbol = <span class="tok-number">21</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L256"> .{ .symbol = <span class="tok-number">23</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L257"> .{ .symbol = <span class="tok-number">24</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L258"> .{ .symbol = <span class="tok-number">35</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L259"> .{ .symbol = <span class="tok-number">34</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L260"> .{ .symbol = <span class="tok-number">33</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L261"> .{ .symbol = <span class="tok-number">32</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L262"> },</span>
<span class="line" id="L263"> };</span>
<span class="line" id="L264"></span>
<span class="line" id="L265"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> predefined_match_fse_table = Table{</span>
<span class="line" id="L266"> .fse = &[<span class="tok-number">64</span>]Table.Fse{</span>
<span class="line" id="L267"> .{ .symbol = <span class="tok-number">0</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L268"> .{ .symbol = <span class="tok-number">1</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L269"> .{ .symbol = <span class="tok-number">2</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L270"> .{ .symbol = <span class="tok-number">3</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L271"> .{ .symbol = <span class="tok-number">5</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L272"> .{ .symbol = <span class="tok-number">6</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L273"> .{ .symbol = <span class="tok-number">8</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L274"> .{ .symbol = <span class="tok-number">10</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L275"> .{ .symbol = <span class="tok-number">13</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L276"> .{ .symbol = <span class="tok-number">16</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L277"> .{ .symbol = <span class="tok-number">19</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L278"> .{ .symbol = <span class="tok-number">22</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L279"> .{ .symbol = <span class="tok-number">25</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L280"> .{ .symbol = <span class="tok-number">28</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L281"> .{ .symbol = <span class="tok-number">31</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L282"> .{ .symbol = <span class="tok-number">33</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L283"> .{ .symbol = <span class="tok-number">35</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L284"> .{ .symbol = <span class="tok-number">37</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L285"> .{ .symbol = <span class="tok-number">39</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L286"> .{ .symbol = <span class="tok-number">41</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L287"> .{ .symbol = <span class="tok-number">43</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L288"> .{ .symbol = <span class="tok-number">45</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L289"> .{ .symbol = <span class="tok-number">1</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">16</span> },</span>
<span class="line" id="L290"> .{ .symbol = <span class="tok-number">2</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L291"> .{ .symbol = <span class="tok-number">3</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L292"> .{ .symbol = <span class="tok-number">4</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L293"> .{ .symbol = <span class="tok-number">6</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L294"> .{ .symbol = <span class="tok-number">7</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L295"> .{ .symbol = <span class="tok-number">9</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L296"> .{ .symbol = <span class="tok-number">12</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L297"> .{ .symbol = <span class="tok-number">15</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L298"> .{ .symbol = <span class="tok-number">18</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L299"> .{ .symbol = <span class="tok-number">21</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L300"> .{ .symbol = <span class="tok-number">24</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L301"> .{ .symbol = <span class="tok-number">27</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L302"> .{ .symbol = <span class="tok-number">30</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L303"> .{ .symbol = <span class="tok-number">32</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L304"> .{ .symbol = <span class="tok-number">34</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L305"> .{ .symbol = <span class="tok-number">36</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L306"> .{ .symbol = <span class="tok-number">38</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L307"> .{ .symbol = <span class="tok-number">40</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L308"> .{ .symbol = <span class="tok-number">42</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L309"> .{ .symbol = <span class="tok-number">44</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L310"> .{ .symbol = <span class="tok-number">1</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L311"> .{ .symbol = <span class="tok-number">1</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">48</span> },</span>
<span class="line" id="L312"> .{ .symbol = <span class="tok-number">2</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">16</span> },</span>
<span class="line" id="L313"> .{ .symbol = <span class="tok-number">4</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L314"> .{ .symbol = <span class="tok-number">5</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L315"> .{ .symbol = <span class="tok-number">7</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L316"> .{ .symbol = <span class="tok-number">8</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">32</span> },</span>
<span class="line" id="L317"> .{ .symbol = <span class="tok-number">11</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L318"> .{ .symbol = <span class="tok-number">14</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L319"> .{ .symbol = <span class="tok-number">17</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L320"> .{ .symbol = <span class="tok-number">20</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L321"> .{ .symbol = <span class="tok-number">23</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L322"> .{ .symbol = <span class="tok-number">26</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L323"> .{ .symbol = <span class="tok-number">29</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L324"> .{ .symbol = <span class="tok-number">52</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L325"> .{ .symbol = <span class="tok-number">51</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L326"> .{ .symbol = <span class="tok-number">50</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L327"> .{ .symbol = <span class="tok-number">49</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L328"> .{ .symbol = <span class="tok-number">48</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L329"> .{ .symbol = <span class="tok-number">47</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L330"> .{ .symbol = <span class="tok-number">46</span>, .bits = <span class="tok-number">6</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L331"> },</span>
<span class="line" id="L332"> };</span>
<span class="line" id="L333"></span>
<span class="line" id="L334"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> predefined_offset_fse_table = Table{</span>
<span class="line" id="L335"> .fse = &[<span class="tok-number">32</span>]Table.Fse{</span>
<span class="line" id="L336"> .{ .symbol = <span class="tok-number">0</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L337"> .{ .symbol = <span class="tok-number">6</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L338"> .{ .symbol = <span class="tok-number">9</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L339"> .{ .symbol = <span class="tok-number">15</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L340"> .{ .symbol = <span class="tok-number">21</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L341"> .{ .symbol = <span class="tok-number">3</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L342"> .{ .symbol = <span class="tok-number">7</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L343"> .{ .symbol = <span class="tok-number">12</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L344"> .{ .symbol = <span class="tok-number">18</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L345"> .{ .symbol = <span class="tok-number">23</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L346"> .{ .symbol = <span class="tok-number">5</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L347"> .{ .symbol = <span class="tok-number">8</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L348"> .{ .symbol = <span class="tok-number">14</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L349"> .{ .symbol = <span class="tok-number">20</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L350"> .{ .symbol = <span class="tok-number">2</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L351"> .{ .symbol = <span class="tok-number">7</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">16</span> },</span>
<span class="line" id="L352"> .{ .symbol = <span class="tok-number">11</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L353"> .{ .symbol = <span class="tok-number">17</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L354"> .{ .symbol = <span class="tok-number">22</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L355"> .{ .symbol = <span class="tok-number">4</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L356"> .{ .symbol = <span class="tok-number">8</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">16</span> },</span>
<span class="line" id="L357"> .{ .symbol = <span class="tok-number">13</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L358"> .{ .symbol = <span class="tok-number">19</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L359"> .{ .symbol = <span class="tok-number">1</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L360"> .{ .symbol = <span class="tok-number">6</span>, .bits = <span class="tok-number">4</span>, .baseline = <span class="tok-number">16</span> },</span>
<span class="line" id="L361"> .{ .symbol = <span class="tok-number">10</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L362"> .{ .symbol = <span class="tok-number">16</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L363"> .{ .symbol = <span class="tok-number">28</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L364"> .{ .symbol = <span class="tok-number">27</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L365"> .{ .symbol = <span class="tok-number">26</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L366"> .{ .symbol = <span class="tok-number">25</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L367"> .{ .symbol = <span class="tok-number">24</span>, .bits = <span class="tok-number">5</span>, .baseline = <span class="tok-number">0</span> },</span>
<span class="line" id="L368"> },</span>
<span class="line" id="L369"> };</span>
<span class="line" id="L370"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> start_repeated_offset_1 = <span class="tok-number">1</span>;</span>
<span class="line" id="L371"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> start_repeated_offset_2 = <span class="tok-number">4</span>;</span>
<span class="line" id="L372"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> start_repeated_offset_3 = <span class="tok-number">8</span>;</span>
<span class="line" id="L373"></span>
<span class="line" id="L374"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> table_accuracy_log_max = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L375"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> literal = <span class="tok-number">9</span>;</span>
<span class="line" id="L376"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> match = <span class="tok-number">9</span>;</span>
<span class="line" id="L377"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> offset = <span class="tok-number">8</span>;</span>
<span class="line" id="L378"> };</span>
<span class="line" id="L379"></span>
<span class="line" id="L380"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> table_symbol_count_max = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L381"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> literal = <span class="tok-number">36</span>;</span>
<span class="line" id="L382"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> match = <span class="tok-number">53</span>;</span>
<span class="line" id="L383"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> offset = <span class="tok-number">32</span>;</span>
<span class="line" id="L384"> };</span>
<span class="line" id="L385"></span>
<span class="line" id="L386"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> default_accuracy_log = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L387"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> literal = <span class="tok-number">6</span>;</span>
<span class="line" id="L388"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> match = <span class="tok-number">6</span>;</span>
<span class="line" id="L389"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> offset = <span class="tok-number">5</span>;</span>
<span class="line" id="L390"> };</span>
<span class="line" id="L391"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> table_size_max = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L392"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> literal = <span class="tok-number">1</span> << table_accuracy_log_max.literal;</span>
<span class="line" id="L393"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> match = <span class="tok-number">1</span> << table_accuracy_log_max.match;</span>
<span class="line" id="L394"> <span class="tok-kw">pub</span> <span class="tok-kw">const</span> offset = <span class="tok-number">1</span> << table_accuracy_log_max.match;</span>
<span class="line" id="L395"> };</span>
<span class="line" id="L396">};</span>
<span class="line" id="L397"></span>
<span class="line" id="L398"><span class="tok-kw">test</span> {</span>
<span class="line" id="L399"> <span class="tok-kw">const</span> testing = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>).testing;</span>
<span class="line" id="L400"> testing.refAllDeclsRecursive(<span class="tok-builtin">@This</span>());</span>
<span class="line" id="L401">}</span>
<span class="line" id="L402"></span>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ReversedByteReader = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L4"> remaining_bytes: <span class="tok-type">usize</span>,</span>
<span class="line" id="L5"> bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"> <span class="tok-kw">const</span> Reader = std.io.Reader(*ReversedByteReader, <span class="tok-kw">error</span>{}, readFn);</span>
<span class="line" id="L8"></span>
<span class="line" id="L9"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) ReversedByteReader {</span>
<span class="line" id="L10"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L11"> .bytes = bytes,</span>
<span class="line" id="L12"> .remaining_bytes = bytes.len,</span>
<span class="line" id="L13"> };</span>
<span class="line" id="L14"> }</span>
<span class="line" id="L15"></span>
<span class="line" id="L16"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">reader</span>(self: *ReversedByteReader) Reader {</span>
<span class="line" id="L17"> <span class="tok-kw">return</span> .{ .context = self };</span>
<span class="line" id="L18"> }</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"> <span class="tok-kw">fn</span> <span class="tok-fn">readFn</span>(ctx: *ReversedByteReader, buffer: []<span class="tok-type">u8</span>) !<span class="tok-type">usize</span> {</span>
<span class="line" id="L21"> <span class="tok-kw">if</span> (ctx.remaining_bytes == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-number">0</span>;</span>
<span class="line" id="L22"> <span class="tok-kw">const</span> byte_index = ctx.remaining_bytes - <span class="tok-number">1</span>;</span>
<span class="line" id="L23"> buffer[<span class="tok-number">0</span>] = ctx.bytes[byte_index];</span>
<span class="line" id="L24"> <span class="tok-comment">// buffer[0] = @bitReverse(ctx.bytes[byte_index]);</span>
</span>
<span class="line" id="L25"> ctx.remaining_bytes = byte_index;</span>
<span class="line" id="L26"> <span class="tok-kw">return</span> <span class="tok-number">1</span>;</span>
<span class="line" id="L27"> }</span>
<span class="line" id="L28">};</span>
<span class="line" id="L29"></span>
<span class="line" id="L30"><span class="tok-comment">/// A bit reader for reading the reversed bit streams used to encode</span></span>
<span class="line" id="L31"><span class="tok-comment">/// FSE compressed data.</span></span>
<span class="line" id="L32"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ReverseBitReader = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L33"> byte_reader: ReversedByteReader,</span>
<span class="line" id="L34"> bit_reader: std.io.BitReader(.Big, ReversedByteReader.Reader),</span>
<span class="line" id="L35"></span>
<span class="line" id="L36"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(self: *ReverseBitReader, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-kw">error</span>{BitStreamHasNoStartBit}!<span class="tok-type">void</span> {</span>
<span class="line" id="L37"> self.byte_reader = ReversedByteReader.init(bytes);</span>
<span class="line" id="L38"> self.bit_reader = std.io.bitReader(.Big, self.byte_reader.reader());</span>
<span class="line" id="L39"> <span class="tok-kw">if</span> (bytes.len == <span class="tok-number">0</span>) <span class="tok-kw">return</span>;</span>
<span class="line" id="L40"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L41"> <span class="tok-kw">while</span> (i < <span class="tok-number">8</span> <span class="tok-kw">and</span> <span class="tok-number">0</span> == self.readBitsNoEof(<span class="tok-type">u1</span>, <span class="tok-number">1</span>) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>) : (i += <span class="tok-number">1</span>) {}</span>
<span class="line" id="L42"> <span class="tok-kw">if</span> (i == <span class="tok-number">8</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BitStreamHasNoStartBit;</span>
<span class="line" id="L43"> }</span>
<span class="line" id="L44"></span>
<span class="line" id="L45"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">readBitsNoEof</span>(self: *<span class="tok-builtin">@This</span>(), <span class="tok-kw">comptime</span> U: <span class="tok-type">type</span>, num_bits: <span class="tok-type">usize</span>) <span class="tok-kw">error</span>{EndOfStream}!U {</span>
<span class="line" id="L46"> <span class="tok-kw">return</span> self.bit_reader.readBitsNoEof(U, num_bits);</span>
<span class="line" id="L47"> }</span>
<span class="line" id="L48"></span>
<span class="line" id="L49"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">readBits</span>(self: *<span class="tok-builtin">@This</span>(), <span class="tok-kw">comptime</span> U: <span class="tok-type">type</span>, num_bits: <span class="tok-type">usize</span>, out_bits: *<span class="tok-type">usize</span>) <span class="tok-kw">error</span>{}!U {</span>
<span class="line" id="L50"> <span class="tok-kw">return</span> <span class="tok-kw">try</span> self.bit_reader.readBits(U, num_bits, out_bits);</span>
<span class="line" id="L51"> }</span>
<span class="line" id="L52"></span>
<span class="line" id="L53"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">alignToByte</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L54"> self.bit_reader.alignToByte();</span>
<span class="line" id="L55"> }</span>
<span class="line" id="L56"></span>
<span class="line" id="L57"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isEmpty</span>(self: ReverseBitReader) <span class="tok-type">bool</span> {</span>
<span class="line" id="L58"> <span class="tok-kw">return</span> self.byte_reader.remaining_bytes == <span class="tok-number">0</span> <span class="tok-kw">and</span> self.bit_reader.bit_count == <span class="tok-number">0</span>;</span>
<span class="line" id="L59"> }</span>
<span class="line" id="L60">};</span>
<span class="line" id="L61"></span>
<span class="line" id="L62"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">BitReader</span>(<span class="tok-kw">comptime</span> Reader: <span class="tok-type">type</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L63"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L64"> underlying: std.io.BitReader(.Little, Reader),</span>
<span class="line" id="L65"></span>
<span class="line" id="L66"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">readBitsNoEof</span>(self: *<span class="tok-builtin">@This</span>(), <span class="tok-kw">comptime</span> U: <span class="tok-type">type</span>, num_bits: <span class="tok-type">usize</span>) !U {</span>
<span class="line" id="L67"> <span class="tok-kw">return</span> self.underlying.readBitsNoEof(U, num_bits);</span>
<span class="line" id="L68"> }</span>
<span class="line" id="L69"></span>
<span class="line" id="L70"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">readBits</span>(self: *<span class="tok-builtin">@This</span>(), <span class="tok-kw">comptime</span> U: <span class="tok-type">type</span>, num_bits: <span class="tok-type">usize</span>, out_bits: *<span class="tok-type">usize</span>) !U {</span>
<span class="line" id="L71"> <span class="tok-kw">return</span> self.underlying.readBits(U, num_bits, out_bits);</span>
<span class="line" id="L72"> }</span>
<span class="line" id="L73"></span>
<span class="line" id="L74"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">alignToByte</span>(self: *<span class="tok-builtin">@This</span>()) <span class="tok-type">void</span> {</span>
<span class="line" id="L75"> self.underlying.alignToByte();</span>
<span class="line" id="L76"> }</span>
<span class="line" id="L77"> };</span>
<span class="line" id="L78">}</span>
<span class="line" id="L79"></span>
<span class="line" id="L80"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">bitReader</span>(reader: <span class="tok-kw">anytype</span>) BitReader(<span class="tok-builtin">@TypeOf</span>(reader)) {</span>
<span class="line" id="L81"> <span class="tok-kw">return</span> .{ .underlying = std.io.bitReader(.Little, reader) };</span>
<span class="line" id="L82">}</span>
<span class="line" id="L83"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/compress | repos/yazap/docs/src/std/compress/zstandard/decompress.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L4"><span class="tok-kw">const</span> RingBuffer = std.RingBuffer;</span>
<span class="line" id="L5"></span>
<span class="line" id="L6"><span class="tok-kw">const</span> types = <span class="tok-builtin">@import</span>(<span class="tok-str">"types.zig"</span>);</span>
<span class="line" id="L7"><span class="tok-kw">const</span> frame = types.frame;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> LiteralsSection = types.compressed_block.LiteralsSection;</span>
<span class="line" id="L9"><span class="tok-kw">const</span> SequencesSection = types.compressed_block.SequencesSection;</span>
<span class="line" id="L10"><span class="tok-kw">const</span> SkippableHeader = types.frame.Skippable.Header;</span>
<span class="line" id="L11"><span class="tok-kw">const</span> ZstandardHeader = types.frame.Zstandard.Header;</span>
<span class="line" id="L12"><span class="tok-kw">const</span> Table = types.compressed_block.Table;</span>
<span class="line" id="L13"></span>
<span class="line" id="L14"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> block = <span class="tok-builtin">@import</span>(<span class="tok-str">"decode/block.zig"</span>);</span>
<span class="line" id="L15"></span>
<span class="line" id="L16"><span class="tok-kw">const</span> readers = <span class="tok-builtin">@import</span>(<span class="tok-str">"readers.zig"</span>);</span>
<span class="line" id="L17"></span>
<span class="line" id="L18"><span class="tok-kw">const</span> readInt = std.mem.readIntLittle;</span>
<span class="line" id="L19"><span class="tok-kw">const</span> readIntSlice = std.mem.readIntSliceLittle;</span>
<span class="line" id="L20"></span>
<span class="line" id="L21"><span class="tok-comment">/// Returns `true` is `magic` is a valid magic number for a skippable frame</span></span>
<span class="line" id="L22"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">isSkippableMagic</span>(magic: <span class="tok-type">u32</span>) <span class="tok-type">bool</span> {</span>
<span class="line" id="L23"> <span class="tok-kw">return</span> frame.Skippable.magic_number_min <= magic <span class="tok-kw">and</span> magic <= frame.Skippable.magic_number_max;</span>
<span class="line" id="L24">}</span>
<span class="line" id="L25"></span>
<span class="line" id="L26"><span class="tok-comment">/// Returns the kind of frame at the beginning of `source`.</span></span>
<span class="line" id="L27"><span class="tok-comment">///</span></span>
<span class="line" id="L28"><span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L29"><span class="tok-comment">/// - `error.BadMagic` if `source` begins with bytes not equal to the</span></span>
<span class="line" id="L30"><span class="tok-comment">/// Zstandard frame magic number, or outside the range of magic numbers for</span></span>
<span class="line" id="L31"><span class="tok-comment">/// skippable frames.</span></span>
<span class="line" id="L32"><span class="tok-comment">/// - `error.EndOfStream` if `source` contains fewer than 4 bytes</span></span>
<span class="line" id="L33"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeFrameType</span>(source: <span class="tok-kw">anytype</span>) <span class="tok-kw">error</span>{ BadMagic, EndOfStream }!frame.Kind {</span>
<span class="line" id="L34"> <span class="tok-kw">const</span> magic = <span class="tok-kw">try</span> source.readIntLittle(<span class="tok-type">u32</span>);</span>
<span class="line" id="L35"> <span class="tok-kw">return</span> frameType(magic);</span>
<span class="line" id="L36">}</span>
<span class="line" id="L37"></span>
<span class="line" id="L38"><span class="tok-comment">/// Returns the kind of frame associated to `magic`.</span></span>
<span class="line" id="L39"><span class="tok-comment">///</span></span>
<span class="line" id="L40"><span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L41"><span class="tok-comment">/// - `error.BadMagic` if `magic` is not a valid magic number.</span></span>
<span class="line" id="L42"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">frameType</span>(magic: <span class="tok-type">u32</span>) <span class="tok-kw">error</span>{BadMagic}!frame.Kind {</span>
<span class="line" id="L43"> <span class="tok-kw">return</span> <span class="tok-kw">if</span> (magic == frame.Zstandard.magic_number)</span>
<span class="line" id="L44"> .zstandard</span>
<span class="line" id="L45"> <span class="tok-kw">else</span> <span class="tok-kw">if</span> (isSkippableMagic(magic))</span>
<span class="line" id="L46"> .skippable</span>
<span class="line" id="L47"> <span class="tok-kw">else</span></span>
<span class="line" id="L48"> <span class="tok-kw">error</span>.BadMagic;</span>
<span class="line" id="L49">}</span>
<span class="line" id="L50"></span>
<span class="line" id="L51"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> FrameHeader = <span class="tok-kw">union</span>(<span class="tok-kw">enum</span>) {</span>
<span class="line" id="L52"> zstandard: ZstandardHeader,</span>
<span class="line" id="L53"> skippable: SkippableHeader,</span>
<span class="line" id="L54">};</span>
<span class="line" id="L55"></span>
<span class="line" id="L56"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> HeaderError = <span class="tok-kw">error</span>{ BadMagic, EndOfStream, ReservedBitSet };</span>
<span class="line" id="L57"></span>
<span class="line" id="L58"><span class="tok-comment">/// Returns the header of the frame at the beginning of `source`.</span></span>
<span class="line" id="L59"><span class="tok-comment">///</span></span>
<span class="line" id="L60"><span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L61"><span class="tok-comment">/// - `error.BadMagic` if `source` begins with bytes not equal to the</span></span>
<span class="line" id="L62"><span class="tok-comment">/// Zstandard frame magic number, or outside the range of magic numbers for</span></span>
<span class="line" id="L63"><span class="tok-comment">/// skippable frames.</span></span>
<span class="line" id="L64"><span class="tok-comment">/// - `error.EndOfStream` if `source` contains fewer than 4 bytes</span></span>
<span class="line" id="L65"><span class="tok-comment">/// - `error.ReservedBitSet` if the frame is a Zstandard frame and any of the</span></span>
<span class="line" id="L66"><span class="tok-comment">/// reserved bits are set</span></span>
<span class="line" id="L67"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeFrameHeader</span>(source: <span class="tok-kw">anytype</span>) (<span class="tok-builtin">@TypeOf</span>(source).Error || HeaderError)!FrameHeader {</span>
<span class="line" id="L68"> <span class="tok-kw">const</span> magic = <span class="tok-kw">try</span> source.readIntLittle(<span class="tok-type">u32</span>);</span>
<span class="line" id="L69"> <span class="tok-kw">const</span> frame_type = <span class="tok-kw">try</span> frameType(magic);</span>
<span class="line" id="L70"> <span class="tok-kw">switch</span> (frame_type) {</span>
<span class="line" id="L71"> .zstandard => <span class="tok-kw">return</span> FrameHeader{ .zstandard = <span class="tok-kw">try</span> decodeZstandardHeader(source) },</span>
<span class="line" id="L72"> .skippable => <span class="tok-kw">return</span> FrameHeader{</span>
<span class="line" id="L73"> .skippable = .{</span>
<span class="line" id="L74"> .magic_number = magic,</span>
<span class="line" id="L75"> .frame_size = <span class="tok-kw">try</span> source.readIntLittle(<span class="tok-type">u32</span>),</span>
<span class="line" id="L76"> },</span>
<span class="line" id="L77"> },</span>
<span class="line" id="L78"> }</span>
<span class="line" id="L79">}</span>
<span class="line" id="L80"></span>
<span class="line" id="L81"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> ReadWriteCount = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L82"> read_count: <span class="tok-type">usize</span>,</span>
<span class="line" id="L83"> write_count: <span class="tok-type">usize</span>,</span>
<span class="line" id="L84">};</span>
<span class="line" id="L85"></span>
<span class="line" id="L86"><span class="tok-comment">/// Decodes frames from `src` into `dest`; returns the length of the result.</span></span>
<span class="line" id="L87"><span class="tok-comment">/// The stream should not have extra trailing bytes - either all bytes in `src`</span></span>
<span class="line" id="L88"><span class="tok-comment">/// will be decoded, or an error will be returned. An error will be returned if</span></span>
<span class="line" id="L89"><span class="tok-comment">/// a Zstandard frame in `src` does not declare its content size.</span></span>
<span class="line" id="L90"><span class="tok-comment">///</span></span>
<span class="line" id="L91"><span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L92"><span class="tok-comment">/// - `error.DictionaryIdFlagUnsupported` if a `src` contains a frame that</span></span>
<span class="line" id="L93"><span class="tok-comment">/// uses a dictionary</span></span>
<span class="line" id="L94"><span class="tok-comment">/// - `error.MalformedFrame` if a frame in `src` is invalid</span></span>
<span class="line" id="L95"><span class="tok-comment">/// - `error.UnknownContentSizeUnsupported` if a frame in `src` does not</span></span>
<span class="line" id="L96"><span class="tok-comment">/// declare its content size</span></span>
<span class="line" id="L97"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decode</span>(dest: []<span class="tok-type">u8</span>, src: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, verify_checksum: <span class="tok-type">bool</span>) <span class="tok-kw">error</span>{</span>
<span class="line" id="L98"> MalformedFrame,</span>
<span class="line" id="L99"> UnknownContentSizeUnsupported,</span>
<span class="line" id="L100"> DictionaryIdFlagUnsupported,</span>
<span class="line" id="L101">}!<span class="tok-type">usize</span> {</span>
<span class="line" id="L102"> <span class="tok-kw">var</span> write_count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L103"> <span class="tok-kw">var</span> read_count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L104"> <span class="tok-kw">while</span> (read_count < src.len) {</span>
<span class="line" id="L105"> <span class="tok-kw">const</span> counts = decodeFrame(dest, src[read_count..], verify_checksum) <span class="tok-kw">catch</span> |err| {</span>
<span class="line" id="L106"> <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L107"> <span class="tok-kw">error</span>.UnknownContentSizeUnsupported => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnknownContentSizeUnsupported,</span>
<span class="line" id="L108"> <span class="tok-kw">error</span>.DictionaryIdFlagUnsupported => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.DictionaryIdFlagUnsupported,</span>
<span class="line" id="L109"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedFrame,</span>
<span class="line" id="L110"> }</span>
<span class="line" id="L111"> };</span>
<span class="line" id="L112"> read_count += counts.read_count;</span>
<span class="line" id="L113"> write_count += counts.write_count;</span>
<span class="line" id="L114"> }</span>
<span class="line" id="L115"> <span class="tok-kw">return</span> write_count;</span>
<span class="line" id="L116">}</span>
<span class="line" id="L117"></span>
<span class="line" id="L118"><span class="tok-comment">/// Decodes a stream of frames from `src`; returns the decoded bytes. The stream</span></span>
<span class="line" id="L119"><span class="tok-comment">/// should not have extra trailing bytes - either all bytes in `src` will be</span></span>
<span class="line" id="L120"><span class="tok-comment">/// decoded, or an error will be returned.</span></span>
<span class="line" id="L121"><span class="tok-comment">///</span></span>
<span class="line" id="L122"><span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L123"><span class="tok-comment">/// - `error.DictionaryIdFlagUnsupported` if a `src` contains a frame that</span></span>
<span class="line" id="L124"><span class="tok-comment">/// uses a dictionary</span></span>
<span class="line" id="L125"><span class="tok-comment">/// - `error.MalformedFrame` if a frame in `src` is invalid</span></span>
<span class="line" id="L126"><span class="tok-comment">/// - `error.OutOfMemory` if `allocator` cannot allocate enough memory</span></span>
<span class="line" id="L127"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeAlloc</span>(</span>
<span class="line" id="L128"> allocator: Allocator,</span>
<span class="line" id="L129"> src: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L130"> verify_checksum: <span class="tok-type">bool</span>,</span>
<span class="line" id="L131"> window_size_max: <span class="tok-type">usize</span>,</span>
<span class="line" id="L132">) <span class="tok-kw">error</span>{ DictionaryIdFlagUnsupported, MalformedFrame, OutOfMemory }![]<span class="tok-type">u8</span> {</span>
<span class="line" id="L133"> <span class="tok-kw">var</span> result = std.ArrayList(<span class="tok-type">u8</span>).init(allocator);</span>
<span class="line" id="L134"> <span class="tok-kw">errdefer</span> result.deinit();</span>
<span class="line" id="L135"></span>
<span class="line" id="L136"> <span class="tok-kw">var</span> read_count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L137"> <span class="tok-kw">while</span> (read_count < src.len) {</span>
<span class="line" id="L138"> read_count += decodeFrameArrayList(</span>
<span class="line" id="L139"> allocator,</span>
<span class="line" id="L140"> &result,</span>
<span class="line" id="L141"> src[read_count..],</span>
<span class="line" id="L142"> verify_checksum,</span>
<span class="line" id="L143"> window_size_max,</span>
<span class="line" id="L144"> ) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L145"> <span class="tok-kw">error</span>.OutOfMemory => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.OutOfMemory,</span>
<span class="line" id="L146"> <span class="tok-kw">error</span>.DictionaryIdFlagUnsupported => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.DictionaryIdFlagUnsupported,</span>
<span class="line" id="L147"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedFrame,</span>
<span class="line" id="L148"> };</span>
<span class="line" id="L149"> }</span>
<span class="line" id="L150"> <span class="tok-kw">return</span> result.toOwnedSlice();</span>
<span class="line" id="L151">}</span>
<span class="line" id="L152"></span>
<span class="line" id="L153"><span class="tok-comment">/// Decodes the frame at the start of `src` into `dest`. Returns the number of</span></span>
<span class="line" id="L154"><span class="tok-comment">/// bytes read from `src` and written to `dest`. This function can only decode</span></span>
<span class="line" id="L155"><span class="tok-comment">/// frames that declare the decompressed content size.</span></span>
<span class="line" id="L156"><span class="tok-comment">///</span></span>
<span class="line" id="L157"><span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L158"><span class="tok-comment">/// - `error.BadMagic` if the first 4 bytes of `src` is not a valid magic</span></span>
<span class="line" id="L159"><span class="tok-comment">/// number for a Zstandard or skippable frame</span></span>
<span class="line" id="L160"><span class="tok-comment">/// - `error.UnknownContentSizeUnsupported` if the frame does not declare the</span></span>
<span class="line" id="L161"><span class="tok-comment">/// uncompressed content size</span></span>
<span class="line" id="L162"><span class="tok-comment">/// - `error.WindowSizeUnknown` if the frame does not have a valid window size</span></span>
<span class="line" id="L163"><span class="tok-comment">/// - `error.ContentTooLarge` if `dest` is smaller than the uncompressed data</span></span>
<span class="line" id="L164"><span class="tok-comment">/// size declared by the frame header</span></span>
<span class="line" id="L165"><span class="tok-comment">/// - `error.ContentSizeTooLarge` if the frame header indicates a content size</span></span>
<span class="line" id="L166"><span class="tok-comment">/// that is larger than `std.math.maxInt(usize)`</span></span>
<span class="line" id="L167"><span class="tok-comment">/// - `error.DictionaryIdFlagUnsupported` if the frame uses a dictionary</span></span>
<span class="line" id="L168"><span class="tok-comment">/// - `error.ChecksumFailure` if `verify_checksum` is true and the frame</span></span>
<span class="line" id="L169"><span class="tok-comment">/// contains a checksum that does not match the checksum of the decompressed</span></span>
<span class="line" id="L170"><span class="tok-comment">/// data</span></span>
<span class="line" id="L171"><span class="tok-comment">/// - `error.ReservedBitSet` if any of the reserved bits of the frame header</span></span>
<span class="line" id="L172"><span class="tok-comment">/// are set</span></span>
<span class="line" id="L173"><span class="tok-comment">/// - `error.EndOfStream` if `src` does not contain a complete frame</span></span>
<span class="line" id="L174"><span class="tok-comment">/// - `error.BadContentSize` if the content size declared by the frame does</span></span>
<span class="line" id="L175"><span class="tok-comment">/// not equal the actual size of decompressed data</span></span>
<span class="line" id="L176"><span class="tok-comment">/// - an error in `block.Error` if there are errors decoding a block</span></span>
<span class="line" id="L177"><span class="tok-comment">/// - `error.SkippableSizeTooLarge` if the frame is skippable and reports a</span></span>
<span class="line" id="L178"><span class="tok-comment">/// size greater than `src.len`</span></span>
<span class="line" id="L179"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeFrame</span>(</span>
<span class="line" id="L180"> dest: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L181"> src: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L182"> verify_checksum: <span class="tok-type">bool</span>,</span>
<span class="line" id="L183">) (<span class="tok-kw">error</span>{</span>
<span class="line" id="L184"> BadMagic,</span>
<span class="line" id="L185"> UnknownContentSizeUnsupported,</span>
<span class="line" id="L186"> ContentTooLarge,</span>
<span class="line" id="L187"> ContentSizeTooLarge,</span>
<span class="line" id="L188"> WindowSizeUnknown,</span>
<span class="line" id="L189"> DictionaryIdFlagUnsupported,</span>
<span class="line" id="L190"> SkippableSizeTooLarge,</span>
<span class="line" id="L191">} || FrameError)!ReadWriteCount {</span>
<span class="line" id="L192"> <span class="tok-kw">var</span> fbs = std.io.fixedBufferStream(src);</span>
<span class="line" id="L193"> <span class="tok-kw">switch</span> (<span class="tok-kw">try</span> decodeFrameType(fbs.reader())) {</span>
<span class="line" id="L194"> .zstandard => <span class="tok-kw">return</span> decodeZstandardFrame(dest, src, verify_checksum),</span>
<span class="line" id="L195"> .skippable => {</span>
<span class="line" id="L196"> <span class="tok-kw">const</span> content_size = <span class="tok-kw">try</span> fbs.reader().readIntLittle(<span class="tok-type">u32</span>);</span>
<span class="line" id="L197"> <span class="tok-kw">if</span> (content_size > std.math.maxInt(<span class="tok-type">usize</span>) - <span class="tok-number">8</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkippableSizeTooLarge;</span>
<span class="line" id="L198"> <span class="tok-kw">const</span> read_count = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, content_size) + <span class="tok-number">8</span>;</span>
<span class="line" id="L199"> <span class="tok-kw">if</span> (read_count > src.len) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkippableSizeTooLarge;</span>
<span class="line" id="L200"> <span class="tok-kw">return</span> ReadWriteCount{</span>
<span class="line" id="L201"> .read_count = read_count,</span>
<span class="line" id="L202"> .write_count = <span class="tok-number">0</span>,</span>
<span class="line" id="L203"> };</span>
<span class="line" id="L204"> },</span>
<span class="line" id="L205"> }</span>
<span class="line" id="L206">}</span>
<span class="line" id="L207"></span>
<span class="line" id="L208"><span class="tok-comment">/// Decodes the frame at the start of `src` into `dest`. Returns the number of</span></span>
<span class="line" id="L209"><span class="tok-comment">/// bytes read from `src`.</span></span>
<span class="line" id="L210"><span class="tok-comment">///</span></span>
<span class="line" id="L211"><span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L212"><span class="tok-comment">/// - `error.BadMagic` if the first 4 bytes of `src` is not a valid magic</span></span>
<span class="line" id="L213"><span class="tok-comment">/// number for a Zstandard or skippable frame</span></span>
<span class="line" id="L214"><span class="tok-comment">/// - `error.WindowSizeUnknown` if the frame does not have a valid window size</span></span>
<span class="line" id="L215"><span class="tok-comment">/// - `error.WindowTooLarge` if the window size is larger than</span></span>
<span class="line" id="L216"><span class="tok-comment">/// `window_size_max`</span></span>
<span class="line" id="L217"><span class="tok-comment">/// - `error.ContentSizeTooLarge` if the frame header indicates a content size</span></span>
<span class="line" id="L218"><span class="tok-comment">/// that is larger than `std.math.maxInt(usize)`</span></span>
<span class="line" id="L219"><span class="tok-comment">/// - `error.DictionaryIdFlagUnsupported` if the frame uses a dictionary</span></span>
<span class="line" id="L220"><span class="tok-comment">/// - `error.ChecksumFailure` if `verify_checksum` is true and the frame</span></span>
<span class="line" id="L221"><span class="tok-comment">/// contains a checksum that does not match the checksum of the decompressed</span></span>
<span class="line" id="L222"><span class="tok-comment">/// data</span></span>
<span class="line" id="L223"><span class="tok-comment">/// - `error.ReservedBitSet` if any of the reserved bits of the frame header</span></span>
<span class="line" id="L224"><span class="tok-comment">/// are set</span></span>
<span class="line" id="L225"><span class="tok-comment">/// - `error.EndOfStream` if `src` does not contain a complete frame</span></span>
<span class="line" id="L226"><span class="tok-comment">/// - `error.BadContentSize` if the content size declared by the frame does</span></span>
<span class="line" id="L227"><span class="tok-comment">/// not equal the actual size of decompressed data</span></span>
<span class="line" id="L228"><span class="tok-comment">/// - `error.OutOfMemory` if `allocator` cannot allocate enough memory</span></span>
<span class="line" id="L229"><span class="tok-comment">/// - an error in `block.Error` if there are errors decoding a block</span></span>
<span class="line" id="L230"><span class="tok-comment">/// - `error.SkippableSizeTooLarge` if the frame is skippable and reports a</span></span>
<span class="line" id="L231"><span class="tok-comment">/// size greater than `src.len`</span></span>
<span class="line" id="L232"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeFrameArrayList</span>(</span>
<span class="line" id="L233"> allocator: Allocator,</span>
<span class="line" id="L234"> dest: *std.ArrayList(<span class="tok-type">u8</span>),</span>
<span class="line" id="L235"> src: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L236"> verify_checksum: <span class="tok-type">bool</span>,</span>
<span class="line" id="L237"> window_size_max: <span class="tok-type">usize</span>,</span>
<span class="line" id="L238">) (<span class="tok-kw">error</span>{ BadMagic, OutOfMemory, SkippableSizeTooLarge } || FrameContext.Error || FrameError)!<span class="tok-type">usize</span> {</span>
<span class="line" id="L239"> <span class="tok-kw">var</span> fbs = std.io.fixedBufferStream(src);</span>
<span class="line" id="L240"> <span class="tok-kw">const</span> reader = fbs.reader();</span>
<span class="line" id="L241"> <span class="tok-kw">const</span> magic = <span class="tok-kw">try</span> reader.readIntLittle(<span class="tok-type">u32</span>);</span>
<span class="line" id="L242"> <span class="tok-kw">switch</span> (<span class="tok-kw">try</span> frameType(magic)) {</span>
<span class="line" id="L243"> .zstandard => <span class="tok-kw">return</span> decodeZstandardFrameArrayList(</span>
<span class="line" id="L244"> allocator,</span>
<span class="line" id="L245"> dest,</span>
<span class="line" id="L246"> src,</span>
<span class="line" id="L247"> verify_checksum,</span>
<span class="line" id="L248"> window_size_max,</span>
<span class="line" id="L249"> ),</span>
<span class="line" id="L250"> .skippable => {</span>
<span class="line" id="L251"> <span class="tok-kw">const</span> content_size = <span class="tok-kw">try</span> fbs.reader().readIntLittle(<span class="tok-type">u32</span>);</span>
<span class="line" id="L252"> <span class="tok-kw">if</span> (content_size > std.math.maxInt(<span class="tok-type">usize</span>) - <span class="tok-number">8</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkippableSizeTooLarge;</span>
<span class="line" id="L253"> <span class="tok-kw">const</span> read_count = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, content_size) + <span class="tok-number">8</span>;</span>
<span class="line" id="L254"> <span class="tok-kw">if</span> (read_count > src.len) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SkippableSizeTooLarge;</span>
<span class="line" id="L255"> <span class="tok-kw">return</span> read_count;</span>
<span class="line" id="L256"> },</span>
<span class="line" id="L257"> }</span>
<span class="line" id="L258">}</span>
<span class="line" id="L259"></span>
<span class="line" id="L260"><span class="tok-comment">/// Returns the frame checksum corresponding to the data fed into `hasher`</span></span>
<span class="line" id="L261"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">computeChecksum</span>(hasher: *std.hash.XxHash64) <span class="tok-type">u32</span> {</span>
<span class="line" id="L262"> <span class="tok-kw">const</span> hash = hasher.final();</span>
<span class="line" id="L263"> <span class="tok-kw">return</span> <span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-builtin">@intCast</span>(hash & <span class="tok-number">0xFFFFFFFF</span>));</span>
<span class="line" id="L264">}</span>
<span class="line" id="L265"></span>
<span class="line" id="L266"><span class="tok-kw">const</span> FrameError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L267"> ChecksumFailure,</span>
<span class="line" id="L268"> BadContentSize,</span>
<span class="line" id="L269"> EndOfStream,</span>
<span class="line" id="L270"> ReservedBitSet,</span>
<span class="line" id="L271">} || block.Error;</span>
<span class="line" id="L272"></span>
<span class="line" id="L273"><span class="tok-comment">/// Decode a Zstandard frame from `src` into `dest`, returning the number of</span></span>
<span class="line" id="L274"><span class="tok-comment">/// bytes read from `src` and written to `dest`. The first four bytes of `src`</span></span>
<span class="line" id="L275"><span class="tok-comment">/// must be the magic number for a Zstandard frame.</span></span>
<span class="line" id="L276"><span class="tok-comment">///</span></span>
<span class="line" id="L277"><span class="tok-comment">/// Error returned:</span></span>
<span class="line" id="L278"><span class="tok-comment">/// - `error.UnknownContentSizeUnsupported` if the frame does not declare the</span></span>
<span class="line" id="L279"><span class="tok-comment">/// uncompressed content size</span></span>
<span class="line" id="L280"><span class="tok-comment">/// - `error.ContentTooLarge` if `dest` is smaller than the uncompressed data</span></span>
<span class="line" id="L281"><span class="tok-comment">/// size declared by the frame header</span></span>
<span class="line" id="L282"><span class="tok-comment">/// - `error.WindowSizeUnknown` if the frame does not have a valid window size</span></span>
<span class="line" id="L283"><span class="tok-comment">/// - `error.DictionaryIdFlagUnsupported` if the frame uses a dictionary</span></span>
<span class="line" id="L284"><span class="tok-comment">/// - `error.ContentSizeTooLarge` if the frame header indicates a content size</span></span>
<span class="line" id="L285"><span class="tok-comment">/// that is larger than `std.math.maxInt(usize)`</span></span>
<span class="line" id="L286"><span class="tok-comment">/// - `error.ChecksumFailure` if `verify_checksum` is true and the frame</span></span>
<span class="line" id="L287"><span class="tok-comment">/// contains a checksum that does not match the checksum of the decompressed</span></span>
<span class="line" id="L288"><span class="tok-comment">/// data</span></span>
<span class="line" id="L289"><span class="tok-comment">/// - `error.ReservedBitSet` if the reserved bit of the frame header is set</span></span>
<span class="line" id="L290"><span class="tok-comment">/// - `error.EndOfStream` if `src` does not contain a complete frame</span></span>
<span class="line" id="L291"><span class="tok-comment">/// - an error in `block.Error` if there are errors decoding a block</span></span>
<span class="line" id="L292"><span class="tok-comment">/// - `error.BadContentSize` if the content size declared by the frame does</span></span>
<span class="line" id="L293"><span class="tok-comment">/// not equal the actual size of decompressed data</span></span>
<span class="line" id="L294"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeZstandardFrame</span>(</span>
<span class="line" id="L295"> dest: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L296"> src: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L297"> verify_checksum: <span class="tok-type">bool</span>,</span>
<span class="line" id="L298">) (<span class="tok-kw">error</span>{</span>
<span class="line" id="L299"> UnknownContentSizeUnsupported,</span>
<span class="line" id="L300"> ContentTooLarge,</span>
<span class="line" id="L301"> ContentSizeTooLarge,</span>
<span class="line" id="L302"> WindowSizeUnknown,</span>
<span class="line" id="L303"> DictionaryIdFlagUnsupported,</span>
<span class="line" id="L304">} || FrameError)!ReadWriteCount {</span>
<span class="line" id="L305"> assert(readInt(<span class="tok-type">u32</span>, src[<span class="tok-number">0</span>..<span class="tok-number">4</span>]) == frame.Zstandard.magic_number);</span>
<span class="line" id="L306"> <span class="tok-kw">var</span> consumed_count: <span class="tok-type">usize</span> = <span class="tok-number">4</span>;</span>
<span class="line" id="L307"></span>
<span class="line" id="L308"> <span class="tok-kw">var</span> frame_context = context: {</span>
<span class="line" id="L309"> <span class="tok-kw">var</span> fbs = std.io.fixedBufferStream(src[consumed_count..]);</span>
<span class="line" id="L310"> <span class="tok-kw">var</span> source = fbs.reader();</span>
<span class="line" id="L311"> <span class="tok-kw">const</span> frame_header = <span class="tok-kw">try</span> decodeZstandardHeader(source);</span>
<span class="line" id="L312"> consumed_count += fbs.pos;</span>
<span class="line" id="L313"> <span class="tok-kw">break</span> :context FrameContext.init(</span>
<span class="line" id="L314"> frame_header,</span>
<span class="line" id="L315"> std.math.maxInt(<span class="tok-type">usize</span>),</span>
<span class="line" id="L316"> verify_checksum,</span>
<span class="line" id="L317"> ) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L318"> <span class="tok-kw">error</span>.WindowTooLarge => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L319"> <span class="tok-kw">inline</span> <span class="tok-kw">else</span> => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L320"> };</span>
<span class="line" id="L321"> };</span>
<span class="line" id="L322"> <span class="tok-kw">const</span> counts = <span class="tok-kw">try</span> decodeZStandardFrameBlocks(</span>
<span class="line" id="L323"> dest,</span>
<span class="line" id="L324"> src[consumed_count..],</span>
<span class="line" id="L325"> &frame_context,</span>
<span class="line" id="L326"> );</span>
<span class="line" id="L327"> <span class="tok-kw">return</span> ReadWriteCount{</span>
<span class="line" id="L328"> .read_count = counts.read_count + consumed_count,</span>
<span class="line" id="L329"> .write_count = counts.write_count,</span>
<span class="line" id="L330"> };</span>
<span class="line" id="L331">}</span>
<span class="line" id="L332"></span>
<span class="line" id="L333"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeZStandardFrameBlocks</span>(</span>
<span class="line" id="L334"> dest: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L335"> src: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L336"> frame_context: *FrameContext,</span>
<span class="line" id="L337">) (<span class="tok-kw">error</span>{ ContentTooLarge, UnknownContentSizeUnsupported } || FrameError)!ReadWriteCount {</span>
<span class="line" id="L338"> <span class="tok-kw">const</span> content_size = frame_context.content_size <span class="tok-kw">orelse</span></span>
<span class="line" id="L339"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnknownContentSizeUnsupported;</span>
<span class="line" id="L340"> <span class="tok-kw">if</span> (dest.len < content_size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ContentTooLarge;</span>
<span class="line" id="L341"></span>
<span class="line" id="L342"> <span class="tok-kw">var</span> consumed_count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L343"> <span class="tok-kw">const</span> written_count = decodeFrameBlocksInner(</span>
<span class="line" id="L344"> dest[<span class="tok-number">0</span>..content_size],</span>
<span class="line" id="L345"> src[consumed_count..],</span>
<span class="line" id="L346"> &consumed_count,</span>
<span class="line" id="L347"> <span class="tok-kw">if</span> (frame_context.hasher_opt) |*hasher| hasher <span class="tok-kw">else</span> <span class="tok-null">null</span>,</span>
<span class="line" id="L348"> frame_context.block_size_max,</span>
<span class="line" id="L349"> ) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L350"> <span class="tok-kw">error</span>.DestTooSmall => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BadContentSize,</span>
<span class="line" id="L351"> <span class="tok-kw">inline</span> <span class="tok-kw">else</span> => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L352"> };</span>
<span class="line" id="L353"></span>
<span class="line" id="L354"> <span class="tok-kw">if</span> (written_count != content_size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BadContentSize;</span>
<span class="line" id="L355"> <span class="tok-kw">if</span> (frame_context.has_checksum) {</span>
<span class="line" id="L356"> <span class="tok-kw">if</span> (src.len < consumed_count + <span class="tok-number">4</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.EndOfStream;</span>
<span class="line" id="L357"> <span class="tok-kw">const</span> checksum = readIntSlice(<span class="tok-type">u32</span>, src[consumed_count .. consumed_count + <span class="tok-number">4</span>]);</span>
<span class="line" id="L358"> consumed_count += <span class="tok-number">4</span>;</span>
<span class="line" id="L359"> <span class="tok-kw">if</span> (frame_context.hasher_opt) |*hasher| {</span>
<span class="line" id="L360"> <span class="tok-kw">if</span> (checksum != computeChecksum(hasher)) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ChecksumFailure;</span>
<span class="line" id="L361"> }</span>
<span class="line" id="L362"> }</span>
<span class="line" id="L363"> <span class="tok-kw">return</span> ReadWriteCount{ .read_count = consumed_count, .write_count = written_count };</span>
<span class="line" id="L364">}</span>
<span class="line" id="L365"></span>
<span class="line" id="L366"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> FrameContext = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L367"> hasher_opt: ?std.hash.XxHash64,</span>
<span class="line" id="L368"> window_size: <span class="tok-type">usize</span>,</span>
<span class="line" id="L369"> has_checksum: <span class="tok-type">bool</span>,</span>
<span class="line" id="L370"> block_size_max: <span class="tok-type">usize</span>,</span>
<span class="line" id="L371"> content_size: ?<span class="tok-type">usize</span>,</span>
<span class="line" id="L372"></span>
<span class="line" id="L373"> <span class="tok-kw">const</span> Error = <span class="tok-kw">error</span>{</span>
<span class="line" id="L374"> DictionaryIdFlagUnsupported,</span>
<span class="line" id="L375"> WindowSizeUnknown,</span>
<span class="line" id="L376"> WindowTooLarge,</span>
<span class="line" id="L377"> ContentSizeTooLarge,</span>
<span class="line" id="L378"> };</span>
<span class="line" id="L379"> <span class="tok-comment">/// Validates `frame_header` and returns the associated `FrameContext`.</span></span>
<span class="line" id="L380"> <span class="tok-comment">///</span></span>
<span class="line" id="L381"> <span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L382"> <span class="tok-comment">/// - `error.DictionaryIdFlagUnsupported` if the frame uses a dictionary</span></span>
<span class="line" id="L383"> <span class="tok-comment">/// - `error.WindowSizeUnknown` if the frame does not have a valid window</span></span>
<span class="line" id="L384"> <span class="tok-comment">/// size</span></span>
<span class="line" id="L385"> <span class="tok-comment">/// - `error.WindowTooLarge` if the window size is larger than</span></span>
<span class="line" id="L386"> <span class="tok-comment">/// `window_size_max`</span></span>
<span class="line" id="L387"> <span class="tok-comment">/// - `error.ContentSizeTooLarge` if the frame header indicates a content</span></span>
<span class="line" id="L388"> <span class="tok-comment">/// size larger than `std.math.maxInt(usize)`</span></span>
<span class="line" id="L389"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(</span>
<span class="line" id="L390"> frame_header: ZstandardHeader,</span>
<span class="line" id="L391"> window_size_max: <span class="tok-type">usize</span>,</span>
<span class="line" id="L392"> verify_checksum: <span class="tok-type">bool</span>,</span>
<span class="line" id="L393"> ) Error!FrameContext {</span>
<span class="line" id="L394"> <span class="tok-kw">if</span> (frame_header.descriptor.dictionary_id_flag != <span class="tok-number">0</span>)</span>
<span class="line" id="L395"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.DictionaryIdFlagUnsupported;</span>
<span class="line" id="L396"></span>
<span class="line" id="L397"> <span class="tok-kw">const</span> window_size_raw = frameWindowSize(frame_header) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.WindowSizeUnknown;</span>
<span class="line" id="L398"> <span class="tok-kw">const</span> window_size = <span class="tok-kw">if</span> (window_size_raw > window_size_max)</span>
<span class="line" id="L399"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.WindowTooLarge</span>
<span class="line" id="L400"> <span class="tok-kw">else</span></span>
<span class="line" id="L401"> <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(window_size_raw));</span>
<span class="line" id="L402"></span>
<span class="line" id="L403"> <span class="tok-kw">const</span> should_compute_checksum =</span>
<span class="line" id="L404"> frame_header.descriptor.content_checksum_flag <span class="tok-kw">and</span> verify_checksum;</span>
<span class="line" id="L405"></span>
<span class="line" id="L406"> <span class="tok-kw">const</span> content_size = <span class="tok-kw">if</span> (frame_header.content_size) |size|</span>
<span class="line" id="L407"> std.math.cast(<span class="tok-type">usize</span>, size) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ContentSizeTooLarge</span>
<span class="line" id="L408"> <span class="tok-kw">else</span></span>
<span class="line" id="L409"> <span class="tok-null">null</span>;</span>
<span class="line" id="L410"></span>
<span class="line" id="L411"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L412"> .hasher_opt = <span class="tok-kw">if</span> (should_compute_checksum) std.hash.XxHash64.init(<span class="tok-number">0</span>) <span class="tok-kw">else</span> <span class="tok-null">null</span>,</span>
<span class="line" id="L413"> .window_size = window_size,</span>
<span class="line" id="L414"> .has_checksum = frame_header.descriptor.content_checksum_flag,</span>
<span class="line" id="L415"> .block_size_max = <span class="tok-builtin">@min</span>(<span class="tok-number">1</span> << <span class="tok-number">17</span>, window_size),</span>
<span class="line" id="L416"> .content_size = content_size,</span>
<span class="line" id="L417"> };</span>
<span class="line" id="L418"> }</span>
<span class="line" id="L419">};</span>
<span class="line" id="L420"></span>
<span class="line" id="L421"><span class="tok-comment">/// Decode a Zstandard from from `src` and return number of bytes read; see</span></span>
<span class="line" id="L422"><span class="tok-comment">/// `decodeZstandardFrame()`. The first four bytes of `src` must be the magic</span></span>
<span class="line" id="L423"><span class="tok-comment">/// number for a Zstandard frame.</span></span>
<span class="line" id="L424"><span class="tok-comment">///</span></span>
<span class="line" id="L425"><span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L426"><span class="tok-comment">/// - `error.WindowSizeUnknown` if the frame does not have a valid window size</span></span>
<span class="line" id="L427"><span class="tok-comment">/// - `error.WindowTooLarge` if the window size is larger than</span></span>
<span class="line" id="L428"><span class="tok-comment">/// `window_size_max`</span></span>
<span class="line" id="L429"><span class="tok-comment">/// - `error.DictionaryIdFlagUnsupported` if the frame uses a dictionary</span></span>
<span class="line" id="L430"><span class="tok-comment">/// - `error.ContentSizeTooLarge` if the frame header indicates a content size</span></span>
<span class="line" id="L431"><span class="tok-comment">/// that is larger than `std.math.maxInt(usize)`</span></span>
<span class="line" id="L432"><span class="tok-comment">/// - `error.ChecksumFailure` if `verify_checksum` is true and the frame</span></span>
<span class="line" id="L433"><span class="tok-comment">/// contains a checksum that does not match the checksum of the decompressed</span></span>
<span class="line" id="L434"><span class="tok-comment">/// data</span></span>
<span class="line" id="L435"><span class="tok-comment">/// - `error.ReservedBitSet` if the reserved bit of the frame header is set</span></span>
<span class="line" id="L436"><span class="tok-comment">/// - `error.EndOfStream` if `src` does not contain a complete frame</span></span>
<span class="line" id="L437"><span class="tok-comment">/// - `error.OutOfMemory` if `allocator` cannot allocate enough memory</span></span>
<span class="line" id="L438"><span class="tok-comment">/// - an error in `block.Error` if there are errors decoding a block</span></span>
<span class="line" id="L439"><span class="tok-comment">/// - `error.BadContentSize` if the content size declared by the frame does</span></span>
<span class="line" id="L440"><span class="tok-comment">/// not equal the size of decompressed data</span></span>
<span class="line" id="L441"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeZstandardFrameArrayList</span>(</span>
<span class="line" id="L442"> allocator: Allocator,</span>
<span class="line" id="L443"> dest: *std.ArrayList(<span class="tok-type">u8</span>),</span>
<span class="line" id="L444"> src: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L445"> verify_checksum: <span class="tok-type">bool</span>,</span>
<span class="line" id="L446"> window_size_max: <span class="tok-type">usize</span>,</span>
<span class="line" id="L447">) (<span class="tok-kw">error</span>{OutOfMemory} || FrameContext.Error || FrameError)!<span class="tok-type">usize</span> {</span>
<span class="line" id="L448"> assert(readInt(<span class="tok-type">u32</span>, src[<span class="tok-number">0</span>..<span class="tok-number">4</span>]) == frame.Zstandard.magic_number);</span>
<span class="line" id="L449"> <span class="tok-kw">var</span> consumed_count: <span class="tok-type">usize</span> = <span class="tok-number">4</span>;</span>
<span class="line" id="L450"></span>
<span class="line" id="L451"> <span class="tok-kw">var</span> frame_context = context: {</span>
<span class="line" id="L452"> <span class="tok-kw">var</span> fbs = std.io.fixedBufferStream(src[consumed_count..]);</span>
<span class="line" id="L453"> <span class="tok-kw">var</span> source = fbs.reader();</span>
<span class="line" id="L454"> <span class="tok-kw">const</span> frame_header = <span class="tok-kw">try</span> decodeZstandardHeader(source);</span>
<span class="line" id="L455"> consumed_count += fbs.pos;</span>
<span class="line" id="L456"> <span class="tok-kw">break</span> :context <span class="tok-kw">try</span> FrameContext.init(frame_header, window_size_max, verify_checksum);</span>
<span class="line" id="L457"> };</span>
<span class="line" id="L458"></span>
<span class="line" id="L459"> consumed_count += <span class="tok-kw">try</span> decodeZstandardFrameBlocksArrayList(</span>
<span class="line" id="L460"> allocator,</span>
<span class="line" id="L461"> dest,</span>
<span class="line" id="L462"> src[consumed_count..],</span>
<span class="line" id="L463"> &frame_context,</span>
<span class="line" id="L464"> );</span>
<span class="line" id="L465"> <span class="tok-kw">return</span> consumed_count;</span>
<span class="line" id="L466">}</span>
<span class="line" id="L467"></span>
<span class="line" id="L468"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeZstandardFrameBlocksArrayList</span>(</span>
<span class="line" id="L469"> allocator: Allocator,</span>
<span class="line" id="L470"> dest: *std.ArrayList(<span class="tok-type">u8</span>),</span>
<span class="line" id="L471"> src: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L472"> frame_context: *FrameContext,</span>
<span class="line" id="L473">) (<span class="tok-kw">error</span>{OutOfMemory} || FrameError)!<span class="tok-type">usize</span> {</span>
<span class="line" id="L474"> <span class="tok-kw">const</span> initial_len = dest.items.len;</span>
<span class="line" id="L475"></span>
<span class="line" id="L476"> <span class="tok-kw">var</span> ring_buffer = <span class="tok-kw">try</span> RingBuffer.init(allocator, frame_context.window_size);</span>
<span class="line" id="L477"> <span class="tok-kw">defer</span> ring_buffer.deinit(allocator);</span>
<span class="line" id="L478"></span>
<span class="line" id="L479"> <span class="tok-comment">// These tables take 7680 bytes</span>
</span>
<span class="line" id="L480"> <span class="tok-kw">var</span> literal_fse_data: [types.compressed_block.table_size_max.literal]Table.Fse = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L481"> <span class="tok-kw">var</span> match_fse_data: [types.compressed_block.table_size_max.match]Table.Fse = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L482"> <span class="tok-kw">var</span> offset_fse_data: [types.compressed_block.table_size_max.offset]Table.Fse = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L483"></span>
<span class="line" id="L484"> <span class="tok-kw">var</span> block_header = <span class="tok-kw">try</span> block.decodeBlockHeaderSlice(src);</span>
<span class="line" id="L485"> <span class="tok-kw">var</span> consumed_count: <span class="tok-type">usize</span> = <span class="tok-number">3</span>;</span>
<span class="line" id="L486"> <span class="tok-kw">var</span> decode_state = block.DecodeState.init(&literal_fse_data, &match_fse_data, &offset_fse_data);</span>
<span class="line" id="L487"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) : ({</span>
<span class="line" id="L488"> block_header = <span class="tok-kw">try</span> block.decodeBlockHeaderSlice(src[consumed_count..]);</span>
<span class="line" id="L489"> consumed_count += <span class="tok-number">3</span>;</span>
<span class="line" id="L490"> }) {</span>
<span class="line" id="L491"> <span class="tok-kw">const</span> written_size = <span class="tok-kw">try</span> block.decodeBlockRingBuffer(</span>
<span class="line" id="L492"> &ring_buffer,</span>
<span class="line" id="L493"> src[consumed_count..],</span>
<span class="line" id="L494"> block_header,</span>
<span class="line" id="L495"> &decode_state,</span>
<span class="line" id="L496"> &consumed_count,</span>
<span class="line" id="L497"> frame_context.block_size_max,</span>
<span class="line" id="L498"> );</span>
<span class="line" id="L499"> <span class="tok-kw">if</span> (frame_context.content_size) |size| {</span>
<span class="line" id="L500"> <span class="tok-kw">if</span> (dest.items.len - initial_len > size) {</span>
<span class="line" id="L501"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BadContentSize;</span>
<span class="line" id="L502"> }</span>
<span class="line" id="L503"> }</span>
<span class="line" id="L504"> <span class="tok-kw">if</span> (written_size > <span class="tok-number">0</span>) {</span>
<span class="line" id="L505"> <span class="tok-kw">const</span> written_slice = ring_buffer.sliceLast(written_size);</span>
<span class="line" id="L506"> <span class="tok-kw">try</span> dest.appendSlice(written_slice.first);</span>
<span class="line" id="L507"> <span class="tok-kw">try</span> dest.appendSlice(written_slice.second);</span>
<span class="line" id="L508"> <span class="tok-kw">if</span> (frame_context.hasher_opt) |*hasher| {</span>
<span class="line" id="L509"> hasher.update(written_slice.first);</span>
<span class="line" id="L510"> hasher.update(written_slice.second);</span>
<span class="line" id="L511"> }</span>
<span class="line" id="L512"> }</span>
<span class="line" id="L513"> <span class="tok-kw">if</span> (block_header.last_block) <span class="tok-kw">break</span>;</span>
<span class="line" id="L514"> }</span>
<span class="line" id="L515"> <span class="tok-kw">if</span> (frame_context.content_size) |size| {</span>
<span class="line" id="L516"> <span class="tok-kw">if</span> (dest.items.len - initial_len != size) {</span>
<span class="line" id="L517"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BadContentSize;</span>
<span class="line" id="L518"> }</span>
<span class="line" id="L519"> }</span>
<span class="line" id="L520"></span>
<span class="line" id="L521"> <span class="tok-kw">if</span> (frame_context.has_checksum) {</span>
<span class="line" id="L522"> <span class="tok-kw">if</span> (src.len < consumed_count + <span class="tok-number">4</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.EndOfStream;</span>
<span class="line" id="L523"> <span class="tok-kw">const</span> checksum = readIntSlice(<span class="tok-type">u32</span>, src[consumed_count .. consumed_count + <span class="tok-number">4</span>]);</span>
<span class="line" id="L524"> consumed_count += <span class="tok-number">4</span>;</span>
<span class="line" id="L525"> <span class="tok-kw">if</span> (frame_context.hasher_opt) |*hasher| {</span>
<span class="line" id="L526"> <span class="tok-kw">if</span> (checksum != computeChecksum(hasher)) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ChecksumFailure;</span>
<span class="line" id="L527"> }</span>
<span class="line" id="L528"> }</span>
<span class="line" id="L529"> <span class="tok-kw">return</span> consumed_count;</span>
<span class="line" id="L530">}</span>
<span class="line" id="L531"></span>
<span class="line" id="L532"><span class="tok-kw">fn</span> <span class="tok-fn">decodeFrameBlocksInner</span>(</span>
<span class="line" id="L533"> dest: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L534"> src: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L535"> consumed_count: *<span class="tok-type">usize</span>,</span>
<span class="line" id="L536"> hash: ?*std.hash.XxHash64,</span>
<span class="line" id="L537"> block_size_max: <span class="tok-type">usize</span>,</span>
<span class="line" id="L538">) (<span class="tok-kw">error</span>{ EndOfStream, DestTooSmall } || block.Error)!<span class="tok-type">usize</span> {</span>
<span class="line" id="L539"> <span class="tok-comment">// These tables take 7680 bytes</span>
</span>
<span class="line" id="L540"> <span class="tok-kw">var</span> literal_fse_data: [types.compressed_block.table_size_max.literal]Table.Fse = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L541"> <span class="tok-kw">var</span> match_fse_data: [types.compressed_block.table_size_max.match]Table.Fse = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L542"> <span class="tok-kw">var</span> offset_fse_data: [types.compressed_block.table_size_max.offset]Table.Fse = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L543"></span>
<span class="line" id="L544"> <span class="tok-kw">var</span> block_header = <span class="tok-kw">try</span> block.decodeBlockHeaderSlice(src);</span>
<span class="line" id="L545"> <span class="tok-kw">var</span> bytes_read: <span class="tok-type">usize</span> = <span class="tok-number">3</span>;</span>
<span class="line" id="L546"> <span class="tok-kw">defer</span> consumed_count.* += bytes_read;</span>
<span class="line" id="L547"> <span class="tok-kw">var</span> decode_state = block.DecodeState.init(&literal_fse_data, &match_fse_data, &offset_fse_data);</span>
<span class="line" id="L548"> <span class="tok-kw">var</span> count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L549"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) : ({</span>
<span class="line" id="L550"> block_header = <span class="tok-kw">try</span> block.decodeBlockHeaderSlice(src[bytes_read..]);</span>
<span class="line" id="L551"> bytes_read += <span class="tok-number">3</span>;</span>
<span class="line" id="L552"> }) {</span>
<span class="line" id="L553"> <span class="tok-kw">const</span> written_size = <span class="tok-kw">try</span> block.decodeBlock(</span>
<span class="line" id="L554"> dest,</span>
<span class="line" id="L555"> src[bytes_read..],</span>
<span class="line" id="L556"> block_header,</span>
<span class="line" id="L557"> &decode_state,</span>
<span class="line" id="L558"> &bytes_read,</span>
<span class="line" id="L559"> block_size_max,</span>
<span class="line" id="L560"> count,</span>
<span class="line" id="L561"> );</span>
<span class="line" id="L562"> <span class="tok-kw">if</span> (hash) |hash_state| hash_state.update(dest[count .. count + written_size]);</span>
<span class="line" id="L563"> count += written_size;</span>
<span class="line" id="L564"> <span class="tok-kw">if</span> (block_header.last_block) <span class="tok-kw">break</span>;</span>
<span class="line" id="L565"> }</span>
<span class="line" id="L566"> <span class="tok-kw">return</span> count;</span>
<span class="line" id="L567">}</span>
<span class="line" id="L568"></span>
<span class="line" id="L569"><span class="tok-comment">/// Decode the header of a skippable frame. The first four bytes of `src` must</span></span>
<span class="line" id="L570"><span class="tok-comment">/// be a valid magic number for a skippable frame.</span></span>
<span class="line" id="L571"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeSkippableHeader</span>(src: *<span class="tok-kw">const</span> [<span class="tok-number">8</span>]<span class="tok-type">u8</span>) SkippableHeader {</span>
<span class="line" id="L572"> <span class="tok-kw">const</span> magic = readInt(<span class="tok-type">u32</span>, src[<span class="tok-number">0</span>..<span class="tok-number">4</span>]);</span>
<span class="line" id="L573"> assert(isSkippableMagic(magic));</span>
<span class="line" id="L574"> <span class="tok-kw">const</span> frame_size = readInt(<span class="tok-type">u32</span>, src[<span class="tok-number">4</span>..<span class="tok-number">8</span>]);</span>
<span class="line" id="L575"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L576"> .magic_number = magic,</span>
<span class="line" id="L577"> .frame_size = frame_size,</span>
<span class="line" id="L578"> };</span>
<span class="line" id="L579">}</span>
<span class="line" id="L580"></span>
<span class="line" id="L581"><span class="tok-comment">/// Returns the window size required to decompress a frame, or `null` if it</span></span>
<span class="line" id="L582"><span class="tok-comment">/// cannot be determined (which indicates a malformed frame header).</span></span>
<span class="line" id="L583"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">frameWindowSize</span>(header: ZstandardHeader) ?<span class="tok-type">u64</span> {</span>
<span class="line" id="L584"> <span class="tok-kw">if</span> (header.window_descriptor) |descriptor| {</span>
<span class="line" id="L585"> <span class="tok-kw">const</span> exponent = (descriptor & <span class="tok-number">0b11111000</span>) >> <span class="tok-number">3</span>;</span>
<span class="line" id="L586"> <span class="tok-kw">const</span> mantissa = descriptor & <span class="tok-number">0b00000111</span>;</span>
<span class="line" id="L587"> <span class="tok-kw">const</span> window_log = <span class="tok-number">10</span> + exponent;</span>
<span class="line" id="L588"> <span class="tok-kw">const</span> window_base = <span class="tok-builtin">@as</span>(<span class="tok-type">u64</span>, <span class="tok-number">1</span>) << <span class="tok-builtin">@as</span>(<span class="tok-type">u6</span>, <span class="tok-builtin">@intCast</span>(window_log));</span>
<span class="line" id="L589"> <span class="tok-kw">const</span> window_add = (window_base / <span class="tok-number">8</span>) * mantissa;</span>
<span class="line" id="L590"> <span class="tok-kw">return</span> window_base + window_add;</span>
<span class="line" id="L591"> } <span class="tok-kw">else</span> <span class="tok-kw">return</span> header.content_size;</span>
<span class="line" id="L592">}</span>
<span class="line" id="L593"></span>
<span class="line" id="L594"><span class="tok-comment">/// Decode the header of a Zstandard frame.</span></span>
<span class="line" id="L595"><span class="tok-comment">///</span></span>
<span class="line" id="L596"><span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L597"><span class="tok-comment">/// - `error.ReservedBitSet` if any of the reserved bits of the header are set</span></span>
<span class="line" id="L598"><span class="tok-comment">/// - `error.EndOfStream` if `source` does not contain a complete header</span></span>
<span class="line" id="L599"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeZstandardHeader</span>(</span>
<span class="line" id="L600"> source: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L601">) (<span class="tok-builtin">@TypeOf</span>(source).Error || <span class="tok-kw">error</span>{ EndOfStream, ReservedBitSet })!ZstandardHeader {</span>
<span class="line" id="L602"> <span class="tok-kw">const</span> descriptor = <span class="tok-builtin">@as</span>(ZstandardHeader.Descriptor, <span class="tok-builtin">@bitCast</span>(<span class="tok-kw">try</span> source.readByte()));</span>
<span class="line" id="L603"></span>
<span class="line" id="L604"> <span class="tok-kw">if</span> (descriptor.reserved) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ReservedBitSet;</span>
<span class="line" id="L605"></span>
<span class="line" id="L606"> <span class="tok-kw">var</span> window_descriptor: ?<span class="tok-type">u8</span> = <span class="tok-null">null</span>;</span>
<span class="line" id="L607"> <span class="tok-kw">if</span> (!descriptor.single_segment_flag) {</span>
<span class="line" id="L608"> window_descriptor = <span class="tok-kw">try</span> source.readByte();</span>
<span class="line" id="L609"> }</span>
<span class="line" id="L610"></span>
<span class="line" id="L611"> <span class="tok-kw">var</span> dictionary_id: ?<span class="tok-type">u32</span> = <span class="tok-null">null</span>;</span>
<span class="line" id="L612"> <span class="tok-kw">if</span> (descriptor.dictionary_id_flag > <span class="tok-number">0</span>) {</span>
<span class="line" id="L613"> <span class="tok-comment">// if flag is 3 then field_size = 4, else field_size = flag</span>
</span>
<span class="line" id="L614"> <span class="tok-kw">const</span> field_size = (<span class="tok-builtin">@as</span>(<span class="tok-type">u4</span>, <span class="tok-number">1</span>) << descriptor.dictionary_id_flag) >> <span class="tok-number">1</span>;</span>
<span class="line" id="L615"> dictionary_id = <span class="tok-kw">try</span> source.readVarInt(<span class="tok-type">u32</span>, .Little, field_size);</span>
<span class="line" id="L616"> }</span>
<span class="line" id="L617"></span>
<span class="line" id="L618"> <span class="tok-kw">var</span> content_size: ?<span class="tok-type">u64</span> = <span class="tok-null">null</span>;</span>
<span class="line" id="L619"> <span class="tok-kw">if</span> (descriptor.single_segment_flag <span class="tok-kw">or</span> descriptor.content_size_flag > <span class="tok-number">0</span>) {</span>
<span class="line" id="L620"> <span class="tok-kw">const</span> field_size = <span class="tok-builtin">@as</span>(<span class="tok-type">u4</span>, <span class="tok-number">1</span>) << descriptor.content_size_flag;</span>
<span class="line" id="L621"> content_size = <span class="tok-kw">try</span> source.readVarInt(<span class="tok-type">u64</span>, .Little, field_size);</span>
<span class="line" id="L622"> <span class="tok-kw">if</span> (field_size == <span class="tok-number">2</span>) content_size.? += <span class="tok-number">256</span>;</span>
<span class="line" id="L623"> }</span>
<span class="line" id="L624"></span>
<span class="line" id="L625"> <span class="tok-kw">const</span> header = ZstandardHeader{</span>
<span class="line" id="L626"> .descriptor = descriptor,</span>
<span class="line" id="L627"> .window_descriptor = window_descriptor,</span>
<span class="line" id="L628"> .dictionary_id = dictionary_id,</span>
<span class="line" id="L629"> .content_size = content_size,</span>
<span class="line" id="L630"> };</span>
<span class="line" id="L631"> <span class="tok-kw">return</span> header;</span>
<span class="line" id="L632">}</span>
<span class="line" id="L633"></span>
<span class="line" id="L634"><span class="tok-kw">test</span> {</span>
<span class="line" id="L635"> std.testing.refAllDecls(<span class="tok-builtin">@This</span>());</span>
<span class="line" id="L636">}</span>
<span class="line" id="L637"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"></span>
<span class="line" id="L3"><span class="tok-kw">const</span> types = <span class="tok-builtin">@import</span>(<span class="tok-str">"../types.zig"</span>);</span>
<span class="line" id="L4"><span class="tok-kw">const</span> LiteralsSection = types.compressed_block.LiteralsSection;</span>
<span class="line" id="L5"><span class="tok-kw">const</span> Table = types.compressed_block.Table;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-kw">const</span> readers = <span class="tok-builtin">@import</span>(<span class="tok-str">"../readers.zig"</span>);</span>
<span class="line" id="L8"></span>
<span class="line" id="L9"><span class="tok-kw">const</span> decodeFseTable = <span class="tok-builtin">@import</span>(<span class="tok-str">"fse.zig"</span>).decodeFseTable;</span>
<span class="line" id="L10"></span>
<span class="line" id="L11"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = <span class="tok-kw">error</span>{</span>
<span class="line" id="L12"> MalformedHuffmanTree,</span>
<span class="line" id="L13"> MalformedFseTable,</span>
<span class="line" id="L14"> MalformedAccuracyLog,</span>
<span class="line" id="L15"> EndOfStream,</span>
<span class="line" id="L16">};</span>
<span class="line" id="L17"></span>
<span class="line" id="L18"><span class="tok-kw">fn</span> <span class="tok-fn">decodeFseHuffmanTree</span>(</span>
<span class="line" id="L19"> source: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L20"> compressed_size: <span class="tok-type">usize</span>,</span>
<span class="line" id="L21"> buffer: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L22"> weights: *[<span class="tok-number">256</span>]<span class="tok-type">u4</span>,</span>
<span class="line" id="L23">) !<span class="tok-type">usize</span> {</span>
<span class="line" id="L24"> <span class="tok-kw">var</span> stream = std.io.limitedReader(source, compressed_size);</span>
<span class="line" id="L25"> <span class="tok-kw">var</span> bit_reader = readers.bitReader(stream.reader());</span>
<span class="line" id="L26"></span>
<span class="line" id="L27"> <span class="tok-kw">var</span> entries: [<span class="tok-number">1</span> << <span class="tok-number">6</span>]Table.Fse = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L28"> <span class="tok-kw">const</span> table_size = decodeFseTable(&bit_reader, <span class="tok-number">256</span>, <span class="tok-number">6</span>, &entries) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L29"> <span class="tok-kw">error</span>.MalformedAccuracyLog, <span class="tok-kw">error</span>.MalformedFseTable => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L30"> <span class="tok-kw">error</span>.EndOfStream => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedFseTable,</span>
<span class="line" id="L31"> <span class="tok-kw">else</span> => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L32"> };</span>
<span class="line" id="L33"> <span class="tok-kw">const</span> accuracy_log = std.math.log2_int_ceil(<span class="tok-type">usize</span>, table_size);</span>
<span class="line" id="L34"></span>
<span class="line" id="L35"> <span class="tok-kw">const</span> amount = <span class="tok-kw">try</span> stream.reader().readAll(buffer);</span>
<span class="line" id="L36"> <span class="tok-kw">var</span> huff_bits: readers.ReverseBitReader = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L37"> huff_bits.init(buffer[<span class="tok-number">0</span>..amount]) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedHuffmanTree;</span>
<span class="line" id="L38"></span>
<span class="line" id="L39"> <span class="tok-kw">return</span> assignWeights(&huff_bits, accuracy_log, &entries, weights);</span>
<span class="line" id="L40">}</span>
<span class="line" id="L41"></span>
<span class="line" id="L42"><span class="tok-kw">fn</span> <span class="tok-fn">decodeFseHuffmanTreeSlice</span>(src: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>, compressed_size: <span class="tok-type">usize</span>, weights: *[<span class="tok-number">256</span>]<span class="tok-type">u4</span>) !<span class="tok-type">usize</span> {</span>
<span class="line" id="L43"> <span class="tok-kw">if</span> (src.len < compressed_size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedHuffmanTree;</span>
<span class="line" id="L44"> <span class="tok-kw">var</span> stream = std.io.fixedBufferStream(src[<span class="tok-number">0</span>..compressed_size]);</span>
<span class="line" id="L45"> <span class="tok-kw">var</span> counting_reader = std.io.countingReader(stream.reader());</span>
<span class="line" id="L46"> <span class="tok-kw">var</span> bit_reader = readers.bitReader(counting_reader.reader());</span>
<span class="line" id="L47"></span>
<span class="line" id="L48"> <span class="tok-kw">var</span> entries: [<span class="tok-number">1</span> << <span class="tok-number">6</span>]Table.Fse = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L49"> <span class="tok-kw">const</span> table_size = decodeFseTable(&bit_reader, <span class="tok-number">256</span>, <span class="tok-number">6</span>, &entries) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L50"> <span class="tok-kw">error</span>.MalformedAccuracyLog, <span class="tok-kw">error</span>.MalformedFseTable => |e| <span class="tok-kw">return</span> e,</span>
<span class="line" id="L51"> <span class="tok-kw">error</span>.EndOfStream => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedFseTable,</span>
<span class="line" id="L52"> };</span>
<span class="line" id="L53"> <span class="tok-kw">const</span> accuracy_log = std.math.log2_int_ceil(<span class="tok-type">usize</span>, table_size);</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"> <span class="tok-kw">const</span> start_index = std.math.cast(<span class="tok-type">usize</span>, counting_reader.bytes_read) <span class="tok-kw">orelse</span></span>
<span class="line" id="L56"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedHuffmanTree;</span>
<span class="line" id="L57"> <span class="tok-kw">var</span> huff_data = src[start_index..compressed_size];</span>
<span class="line" id="L58"> <span class="tok-kw">var</span> huff_bits: readers.ReverseBitReader = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L59"> huff_bits.init(huff_data) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedHuffmanTree;</span>
<span class="line" id="L60"></span>
<span class="line" id="L61"> <span class="tok-kw">return</span> assignWeights(&huff_bits, accuracy_log, &entries, weights);</span>
<span class="line" id="L62">}</span>
<span class="line" id="L63"></span>
<span class="line" id="L64"><span class="tok-kw">fn</span> <span class="tok-fn">assignWeights</span>(</span>
<span class="line" id="L65"> huff_bits: *readers.ReverseBitReader,</span>
<span class="line" id="L66"> accuracy_log: <span class="tok-type">usize</span>,</span>
<span class="line" id="L67"> entries: *[<span class="tok-number">1</span> << <span class="tok-number">6</span>]Table.Fse,</span>
<span class="line" id="L68"> weights: *[<span class="tok-number">256</span>]<span class="tok-type">u4</span>,</span>
<span class="line" id="L69">) !<span class="tok-type">usize</span> {</span>
<span class="line" id="L70"> <span class="tok-kw">var</span> i: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L71"> <span class="tok-kw">var</span> even_state: <span class="tok-type">u32</span> = huff_bits.readBitsNoEof(<span class="tok-type">u32</span>, accuracy_log) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedHuffmanTree;</span>
<span class="line" id="L72"> <span class="tok-kw">var</span> odd_state: <span class="tok-type">u32</span> = huff_bits.readBitsNoEof(<span class="tok-type">u32</span>, accuracy_log) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedHuffmanTree;</span>
<span class="line" id="L73"></span>
<span class="line" id="L74"> <span class="tok-kw">while</span> (i < <span class="tok-number">254</span>) {</span>
<span class="line" id="L75"> <span class="tok-kw">const</span> even_data = entries[even_state];</span>
<span class="line" id="L76"> <span class="tok-kw">var</span> read_bits: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L77"> <span class="tok-kw">const</span> even_bits = huff_bits.readBits(<span class="tok-type">u32</span>, even_data.bits, &read_bits) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L78"> weights[i] = std.math.cast(<span class="tok-type">u4</span>, even_data.symbol) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedHuffmanTree;</span>
<span class="line" id="L79"> i += <span class="tok-number">1</span>;</span>
<span class="line" id="L80"> <span class="tok-kw">if</span> (read_bits < even_data.bits) {</span>
<span class="line" id="L81"> weights[i] = std.math.cast(<span class="tok-type">u4</span>, entries[odd_state].symbol) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedHuffmanTree;</span>
<span class="line" id="L82"> i += <span class="tok-number">1</span>;</span>
<span class="line" id="L83"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L84"> }</span>
<span class="line" id="L85"> even_state = even_data.baseline + even_bits;</span>
<span class="line" id="L86"></span>
<span class="line" id="L87"> read_bits = <span class="tok-number">0</span>;</span>
<span class="line" id="L88"> <span class="tok-kw">const</span> odd_data = entries[odd_state];</span>
<span class="line" id="L89"> <span class="tok-kw">const</span> odd_bits = huff_bits.readBits(<span class="tok-type">u32</span>, odd_data.bits, &read_bits) <span class="tok-kw">catch</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L90"> weights[i] = std.math.cast(<span class="tok-type">u4</span>, odd_data.symbol) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedHuffmanTree;</span>
<span class="line" id="L91"> i += <span class="tok-number">1</span>;</span>
<span class="line" id="L92"> <span class="tok-kw">if</span> (read_bits < odd_data.bits) {</span>
<span class="line" id="L93"> <span class="tok-kw">if</span> (i == <span class="tok-number">255</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedHuffmanTree;</span>
<span class="line" id="L94"> weights[i] = std.math.cast(<span class="tok-type">u4</span>, entries[even_state].symbol) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedHuffmanTree;</span>
<span class="line" id="L95"> i += <span class="tok-number">1</span>;</span>
<span class="line" id="L96"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L97"> }</span>
<span class="line" id="L98"> odd_state = odd_data.baseline + odd_bits;</span>
<span class="line" id="L99"> } <span class="tok-kw">else</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedHuffmanTree;</span>
<span class="line" id="L100"></span>
<span class="line" id="L101"> <span class="tok-kw">if</span> (!huff_bits.isEmpty()) {</span>
<span class="line" id="L102"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedHuffmanTree;</span>
<span class="line" id="L103"> }</span>
<span class="line" id="L104"></span>
<span class="line" id="L105"> <span class="tok-kw">return</span> i + <span class="tok-number">1</span>; <span class="tok-comment">// stream contains all but the last symbol</span>
</span>
<span class="line" id="L106">}</span>
<span class="line" id="L107"></span>
<span class="line" id="L108"><span class="tok-kw">fn</span> <span class="tok-fn">decodeDirectHuffmanTree</span>(source: <span class="tok-kw">anytype</span>, encoded_symbol_count: <span class="tok-type">usize</span>, weights: *[<span class="tok-number">256</span>]<span class="tok-type">u4</span>) !<span class="tok-type">usize</span> {</span>
<span class="line" id="L109"> <span class="tok-kw">const</span> weights_byte_count = (encoded_symbol_count + <span class="tok-number">1</span>) / <span class="tok-number">2</span>;</span>
<span class="line" id="L110"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..weights_byte_count) |i| {</span>
<span class="line" id="L111"> <span class="tok-kw">const</span> byte = <span class="tok-kw">try</span> source.readByte();</span>
<span class="line" id="L112"> weights[<span class="tok-number">2</span> * i] = <span class="tok-builtin">@as</span>(<span class="tok-type">u4</span>, <span class="tok-builtin">@intCast</span>(byte >> <span class="tok-number">4</span>));</span>
<span class="line" id="L113"> weights[<span class="tok-number">2</span> * i + <span class="tok-number">1</span>] = <span class="tok-builtin">@as</span>(<span class="tok-type">u4</span>, <span class="tok-builtin">@intCast</span>(byte & <span class="tok-number">0xF</span>));</span>
<span class="line" id="L114"> }</span>
<span class="line" id="L115"> <span class="tok-kw">return</span> encoded_symbol_count + <span class="tok-number">1</span>;</span>
<span class="line" id="L116">}</span>
<span class="line" id="L117"></span>
<span class="line" id="L118"><span class="tok-kw">fn</span> <span class="tok-fn">assignSymbols</span>(weight_sorted_prefixed_symbols: []LiteralsSection.HuffmanTree.PrefixedSymbol, weights: [<span class="tok-number">256</span>]<span class="tok-type">u4</span>) <span class="tok-type">usize</span> {</span>
<span class="line" id="L119"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..weight_sorted_prefixed_symbols.len) |i| {</span>
<span class="line" id="L120"> weight_sorted_prefixed_symbols[i] = .{</span>
<span class="line" id="L121"> .symbol = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(i)),</span>
<span class="line" id="L122"> .weight = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L123"> .prefix = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L124"> };</span>
<span class="line" id="L125"> }</span>
<span class="line" id="L126"></span>
<span class="line" id="L127"> std.mem.sort(</span>
<span class="line" id="L128"> LiteralsSection.HuffmanTree.PrefixedSymbol,</span>
<span class="line" id="L129"> weight_sorted_prefixed_symbols,</span>
<span class="line" id="L130"> weights,</span>
<span class="line" id="L131"> lessThanByWeight,</span>
<span class="line" id="L132"> );</span>
<span class="line" id="L133"></span>
<span class="line" id="L134"> <span class="tok-kw">var</span> prefix: <span class="tok-type">u16</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L135"> <span class="tok-kw">var</span> prefixed_symbol_count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L136"> <span class="tok-kw">var</span> sorted_index: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L137"> <span class="tok-kw">const</span> symbol_count = weight_sorted_prefixed_symbols.len;</span>
<span class="line" id="L138"> <span class="tok-kw">while</span> (sorted_index < symbol_count) {</span>
<span class="line" id="L139"> <span class="tok-kw">var</span> symbol = weight_sorted_prefixed_symbols[sorted_index].symbol;</span>
<span class="line" id="L140"> <span class="tok-kw">const</span> weight = weights[symbol];</span>
<span class="line" id="L141"> <span class="tok-kw">if</span> (weight == <span class="tok-number">0</span>) {</span>
<span class="line" id="L142"> sorted_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L143"> <span class="tok-kw">continue</span>;</span>
<span class="line" id="L144"> }</span>
<span class="line" id="L145"></span>
<span class="line" id="L146"> <span class="tok-kw">while</span> (sorted_index < symbol_count) : ({</span>
<span class="line" id="L147"> sorted_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L148"> prefixed_symbol_count += <span class="tok-number">1</span>;</span>
<span class="line" id="L149"> prefix += <span class="tok-number">1</span>;</span>
<span class="line" id="L150"> }) {</span>
<span class="line" id="L151"> symbol = weight_sorted_prefixed_symbols[sorted_index].symbol;</span>
<span class="line" id="L152"> <span class="tok-kw">if</span> (weights[symbol] != weight) {</span>
<span class="line" id="L153"> prefix = ((prefix - <span class="tok-number">1</span>) >> (weights[symbol] - weight)) + <span class="tok-number">1</span>;</span>
<span class="line" id="L154"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L155"> }</span>
<span class="line" id="L156"> weight_sorted_prefixed_symbols[prefixed_symbol_count].symbol = symbol;</span>
<span class="line" id="L157"> weight_sorted_prefixed_symbols[prefixed_symbol_count].prefix = prefix;</span>
<span class="line" id="L158"> weight_sorted_prefixed_symbols[prefixed_symbol_count].weight = weight;</span>
<span class="line" id="L159"> }</span>
<span class="line" id="L160"> }</span>
<span class="line" id="L161"> <span class="tok-kw">return</span> prefixed_symbol_count;</span>
<span class="line" id="L162">}</span>
<span class="line" id="L163"></span>
<span class="line" id="L164"><span class="tok-kw">fn</span> <span class="tok-fn">buildHuffmanTree</span>(weights: *[<span class="tok-number">256</span>]<span class="tok-type">u4</span>, symbol_count: <span class="tok-type">usize</span>) <span class="tok-kw">error</span>{MalformedHuffmanTree}!LiteralsSection.HuffmanTree {</span>
<span class="line" id="L165"> <span class="tok-kw">var</span> weight_power_sum_big: <span class="tok-type">u32</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L166"> <span class="tok-kw">for</span> (weights[<span class="tok-number">0</span> .. symbol_count - <span class="tok-number">1</span>]) |value| {</span>
<span class="line" id="L167"> weight_power_sum_big += (<span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-number">1</span>) << value) >> <span class="tok-number">1</span>;</span>
<span class="line" id="L168"> }</span>
<span class="line" id="L169"> <span class="tok-kw">if</span> (weight_power_sum_big >= <span class="tok-number">1</span> << <span class="tok-number">11</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedHuffmanTree;</span>
<span class="line" id="L170"> <span class="tok-kw">const</span> weight_power_sum = <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(weight_power_sum_big));</span>
<span class="line" id="L171"></span>
<span class="line" id="L172"> <span class="tok-comment">// advance to next power of two (even if weight_power_sum is a power of 2)</span>
</span>
<span class="line" id="L173"> <span class="tok-comment">// TODO: is it valid to have weight_power_sum == 0?</span>
</span>
<span class="line" id="L174"> <span class="tok-kw">const</span> max_number_of_bits = <span class="tok-kw">if</span> (weight_power_sum == <span class="tok-number">0</span>) <span class="tok-number">1</span> <span class="tok-kw">else</span> std.math.log2_int(<span class="tok-type">u16</span>, weight_power_sum) + <span class="tok-number">1</span>;</span>
<span class="line" id="L175"> <span class="tok-kw">const</span> next_power_of_two = <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-number">1</span>) << max_number_of_bits;</span>
<span class="line" id="L176"> weights[symbol_count - <span class="tok-number">1</span>] = std.math.log2_int(<span class="tok-type">u16</span>, next_power_of_two - weight_power_sum) + <span class="tok-number">1</span>;</span>
<span class="line" id="L177"></span>
<span class="line" id="L178"> <span class="tok-kw">var</span> weight_sorted_prefixed_symbols: [<span class="tok-number">256</span>]LiteralsSection.HuffmanTree.PrefixedSymbol = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L179"> <span class="tok-kw">const</span> prefixed_symbol_count = assignSymbols(weight_sorted_prefixed_symbols[<span class="tok-number">0</span>..symbol_count], weights.*);</span>
<span class="line" id="L180"> <span class="tok-kw">const</span> tree = LiteralsSection.HuffmanTree{</span>
<span class="line" id="L181"> .max_bit_count = max_number_of_bits,</span>
<span class="line" id="L182"> .symbol_count_minus_one = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(prefixed_symbol_count - <span class="tok-number">1</span>)),</span>
<span class="line" id="L183"> .nodes = weight_sorted_prefixed_symbols,</span>
<span class="line" id="L184"> };</span>
<span class="line" id="L185"> <span class="tok-kw">return</span> tree;</span>
<span class="line" id="L186">}</span>
<span class="line" id="L187"></span>
<span class="line" id="L188"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeHuffmanTree</span>(</span>
<span class="line" id="L189"> source: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L190"> buffer: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L191">) (<span class="tok-builtin">@TypeOf</span>(source).Error || Error)!LiteralsSection.HuffmanTree {</span>
<span class="line" id="L192"> <span class="tok-kw">const</span> header = <span class="tok-kw">try</span> source.readByte();</span>
<span class="line" id="L193"> <span class="tok-kw">var</span> weights: [<span class="tok-number">256</span>]<span class="tok-type">u4</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L194"> <span class="tok-kw">const</span> symbol_count = <span class="tok-kw">if</span> (header < <span class="tok-number">128</span>)</span>
<span class="line" id="L195"> <span class="tok-comment">// FSE compressed weights</span>
</span>
<span class="line" id="L196"> <span class="tok-kw">try</span> decodeFseHuffmanTree(source, header, buffer, &weights)</span>
<span class="line" id="L197"> <span class="tok-kw">else</span></span>
<span class="line" id="L198"> <span class="tok-kw">try</span> decodeDirectHuffmanTree(source, header - <span class="tok-number">127</span>, &weights);</span>
<span class="line" id="L199"></span>
<span class="line" id="L200"> <span class="tok-kw">return</span> buildHuffmanTree(&weights, symbol_count);</span>
<span class="line" id="L201">}</span>
<span class="line" id="L202"></span>
<span class="line" id="L203"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeHuffmanTreeSlice</span>(</span>
<span class="line" id="L204"> src: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L205"> consumed_count: *<span class="tok-type">usize</span>,</span>
<span class="line" id="L206">) Error!LiteralsSection.HuffmanTree {</span>
<span class="line" id="L207"> <span class="tok-kw">if</span> (src.len == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedHuffmanTree;</span>
<span class="line" id="L208"> <span class="tok-kw">const</span> header = src[<span class="tok-number">0</span>];</span>
<span class="line" id="L209"> <span class="tok-kw">var</span> bytes_read: <span class="tok-type">usize</span> = <span class="tok-number">1</span>;</span>
<span class="line" id="L210"> <span class="tok-kw">var</span> weights: [<span class="tok-number">256</span>]<span class="tok-type">u4</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L211"> <span class="tok-kw">const</span> symbol_count = <span class="tok-kw">if</span> (header < <span class="tok-number">128</span>) count: {</span>
<span class="line" id="L212"> <span class="tok-comment">// FSE compressed weights</span>
</span>
<span class="line" id="L213"> bytes_read += header;</span>
<span class="line" id="L214"> <span class="tok-kw">break</span> :count <span class="tok-kw">try</span> decodeFseHuffmanTreeSlice(src[<span class="tok-number">1</span>..], header, &weights);</span>
<span class="line" id="L215"> } <span class="tok-kw">else</span> count: {</span>
<span class="line" id="L216"> <span class="tok-kw">var</span> fbs = std.io.fixedBufferStream(src[<span class="tok-number">1</span>..]);</span>
<span class="line" id="L217"> <span class="tok-kw">defer</span> bytes_read += fbs.pos;</span>
<span class="line" id="L218"> <span class="tok-kw">break</span> :count <span class="tok-kw">try</span> decodeDirectHuffmanTree(fbs.reader(), header - <span class="tok-number">127</span>, &weights);</span>
<span class="line" id="L219"> };</span>
<span class="line" id="L220"></span>
<span class="line" id="L221"> consumed_count.* += bytes_read;</span>
<span class="line" id="L222"> <span class="tok-kw">return</span> buildHuffmanTree(&weights, symbol_count);</span>
<span class="line" id="L223">}</span>
<span class="line" id="L224"></span>
<span class="line" id="L225"><span class="tok-kw">fn</span> <span class="tok-fn">lessThanByWeight</span>(</span>
<span class="line" id="L226"> weights: [<span class="tok-number">256</span>]<span class="tok-type">u4</span>,</span>
<span class="line" id="L227"> lhs: LiteralsSection.HuffmanTree.PrefixedSymbol,</span>
<span class="line" id="L228"> rhs: LiteralsSection.HuffmanTree.PrefixedSymbol,</span>
<span class="line" id="L229">) <span class="tok-type">bool</span> {</span>
<span class="line" id="L230"> <span class="tok-comment">// NOTE: this function relies on the use of a stable sorting algorithm,</span>
</span>
<span class="line" id="L231"> <span class="tok-comment">// otherwise a special case of if (weights[lhs] == weights[rhs]) return lhs < rhs;</span>
</span>
<span class="line" id="L232"> <span class="tok-comment">// should be added</span>
</span>
<span class="line" id="L233"> <span class="tok-kw">return</span> weights[lhs.symbol] < weights[rhs.symbol];</span>
<span class="line" id="L234">}</span>
<span class="line" id="L235"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L3"><span class="tok-kw">const</span> RingBuffer = std.RingBuffer;</span>
<span class="line" id="L4"></span>
<span class="line" id="L5"><span class="tok-kw">const</span> types = <span class="tok-builtin">@import</span>(<span class="tok-str">"../types.zig"</span>);</span>
<span class="line" id="L6"><span class="tok-kw">const</span> frame = types.frame;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> Table = types.compressed_block.Table;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> LiteralsSection = types.compressed_block.LiteralsSection;</span>
<span class="line" id="L9"><span class="tok-kw">const</span> SequencesSection = types.compressed_block.SequencesSection;</span>
<span class="line" id="L10"></span>
<span class="line" id="L11"><span class="tok-kw">const</span> huffman = <span class="tok-builtin">@import</span>(<span class="tok-str">"huffman.zig"</span>);</span>
<span class="line" id="L12"><span class="tok-kw">const</span> readers = <span class="tok-builtin">@import</span>(<span class="tok-str">"../readers.zig"</span>);</span>
<span class="line" id="L13"></span>
<span class="line" id="L14"><span class="tok-kw">const</span> decodeFseTable = <span class="tok-builtin">@import</span>(<span class="tok-str">"fse.zig"</span>).decodeFseTable;</span>
<span class="line" id="L15"></span>
<span class="line" id="L16"><span class="tok-kw">const</span> readInt = std.mem.readIntLittle;</span>
<span class="line" id="L17"></span>
<span class="line" id="L18"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Error = <span class="tok-kw">error</span>{</span>
<span class="line" id="L19"> BlockSizeOverMaximum,</span>
<span class="line" id="L20"> MalformedBlockSize,</span>
<span class="line" id="L21"> ReservedBlock,</span>
<span class="line" id="L22"> MalformedRleBlock,</span>
<span class="line" id="L23"> MalformedCompressedBlock,</span>
<span class="line" id="L24">};</span>
<span class="line" id="L25"></span>
<span class="line" id="L26"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> DecodeState = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L27"> repeat_offsets: [<span class="tok-number">3</span>]<span class="tok-type">u32</span>,</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"> offset: StateData(<span class="tok-number">8</span>),</span>
<span class="line" id="L30"> match: StateData(<span class="tok-number">9</span>),</span>
<span class="line" id="L31"> literal: StateData(<span class="tok-number">9</span>),</span>
<span class="line" id="L32"></span>
<span class="line" id="L33"> offset_fse_buffer: []Table.Fse,</span>
<span class="line" id="L34"> match_fse_buffer: []Table.Fse,</span>
<span class="line" id="L35"> literal_fse_buffer: []Table.Fse,</span>
<span class="line" id="L36"></span>
<span class="line" id="L37"> fse_tables_undefined: <span class="tok-type">bool</span>,</span>
<span class="line" id="L38"></span>
<span class="line" id="L39"> literal_stream_reader: readers.ReverseBitReader,</span>
<span class="line" id="L40"> literal_stream_index: <span class="tok-type">usize</span>,</span>
<span class="line" id="L41"> literal_streams: LiteralsSection.Streams,</span>
<span class="line" id="L42"> literal_header: LiteralsSection.Header,</span>
<span class="line" id="L43"> huffman_tree: ?LiteralsSection.HuffmanTree,</span>
<span class="line" id="L44"></span>
<span class="line" id="L45"> literal_written_count: <span class="tok-type">usize</span>,</span>
<span class="line" id="L46"> written_count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>,</span>
<span class="line" id="L47"></span>
<span class="line" id="L48"> <span class="tok-kw">fn</span> <span class="tok-fn">StateData</span>(<span class="tok-kw">comptime</span> max_accuracy_log: <span class="tok-type">comptime_int</span>) <span class="tok-type">type</span> {</span>
<span class="line" id="L49"> <span class="tok-kw">return</span> <span class="tok-kw">struct</span> {</span>
<span class="line" id="L50"> state: State,</span>
<span class="line" id="L51"> table: Table,</span>
<span class="line" id="L52"> accuracy_log: <span class="tok-type">u8</span>,</span>
<span class="line" id="L53"></span>
<span class="line" id="L54"> <span class="tok-kw">const</span> State = std.meta.Int(.unsigned, max_accuracy_log);</span>
<span class="line" id="L55"> };</span>
<span class="line" id="L56"> }</span>
<span class="line" id="L57"></span>
<span class="line" id="L58"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(</span>
<span class="line" id="L59"> literal_fse_buffer: []Table.Fse,</span>
<span class="line" id="L60"> match_fse_buffer: []Table.Fse,</span>
<span class="line" id="L61"> offset_fse_buffer: []Table.Fse,</span>
<span class="line" id="L62"> ) DecodeState {</span>
<span class="line" id="L63"> <span class="tok-kw">return</span> DecodeState{</span>
<span class="line" id="L64"> .repeat_offsets = .{</span>
<span class="line" id="L65"> types.compressed_block.start_repeated_offset_1,</span>
<span class="line" id="L66"> types.compressed_block.start_repeated_offset_2,</span>
<span class="line" id="L67"> types.compressed_block.start_repeated_offset_3,</span>
<span class="line" id="L68"> },</span>
<span class="line" id="L69"></span>
<span class="line" id="L70"> .offset = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L71"> .match = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L72"> .literal = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L73"></span>
<span class="line" id="L74"> .literal_fse_buffer = literal_fse_buffer,</span>
<span class="line" id="L75"> .match_fse_buffer = match_fse_buffer,</span>
<span class="line" id="L76"> .offset_fse_buffer = offset_fse_buffer,</span>
<span class="line" id="L77"></span>
<span class="line" id="L78"> .fse_tables_undefined = <span class="tok-null">true</span>,</span>
<span class="line" id="L79"></span>
<span class="line" id="L80"> .literal_written_count = <span class="tok-number">0</span>,</span>
<span class="line" id="L81"> .literal_header = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L82"> .literal_streams = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L83"> .literal_stream_reader = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L84"> .literal_stream_index = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L85"> .huffman_tree = <span class="tok-null">null</span>,</span>
<span class="line" id="L86"></span>
<span class="line" id="L87"> .written_count = <span class="tok-number">0</span>,</span>
<span class="line" id="L88"> };</span>
<span class="line" id="L89"> }</span>
<span class="line" id="L90"></span>
<span class="line" id="L91"> <span class="tok-comment">/// Prepare the decoder to decode a compressed block. Loads the literals</span></span>
<span class="line" id="L92"> <span class="tok-comment">/// stream and Huffman tree from `literals` and reads the FSE tables from</span></span>
<span class="line" id="L93"> <span class="tok-comment">/// `source`.</span></span>
<span class="line" id="L94"> <span class="tok-comment">///</span></span>
<span class="line" id="L95"> <span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L96"> <span class="tok-comment">/// - `error.BitStreamHasNoStartBit` if the (reversed) literal bitstream's</span></span>
<span class="line" id="L97"> <span class="tok-comment">/// first byte does not have any bits set</span></span>
<span class="line" id="L98"> <span class="tok-comment">/// - `error.TreelessLiteralsFirst` `literals` is a treeless literals</span></span>
<span class="line" id="L99"> <span class="tok-comment">/// section and the decode state does not have a Huffman tree from a</span></span>
<span class="line" id="L100"> <span class="tok-comment">/// previous block</span></span>
<span class="line" id="L101"> <span class="tok-comment">/// - `error.RepeatModeFirst` on the first call if one of the sequence FSE</span></span>
<span class="line" id="L102"> <span class="tok-comment">/// tables is set to repeat mode</span></span>
<span class="line" id="L103"> <span class="tok-comment">/// - `error.MalformedAccuracyLog` if an FSE table has an invalid accuracy</span></span>
<span class="line" id="L104"> <span class="tok-comment">/// - `error.MalformedFseTable` if there are errors decoding an FSE table</span></span>
<span class="line" id="L105"> <span class="tok-comment">/// - `error.EndOfStream` if `source` ends before all FSE tables are read</span></span>
<span class="line" id="L106"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">prepare</span>(</span>
<span class="line" id="L107"> self: *DecodeState,</span>
<span class="line" id="L108"> source: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L109"> literals: LiteralsSection,</span>
<span class="line" id="L110"> sequences_header: SequencesSection.Header,</span>
<span class="line" id="L111"> ) !<span class="tok-type">void</span> {</span>
<span class="line" id="L112"> self.literal_written_count = <span class="tok-number">0</span>;</span>
<span class="line" id="L113"> self.literal_header = literals.header;</span>
<span class="line" id="L114"> self.literal_streams = literals.streams;</span>
<span class="line" id="L115"></span>
<span class="line" id="L116"> <span class="tok-kw">if</span> (literals.huffman_tree) |tree| {</span>
<span class="line" id="L117"> self.huffman_tree = tree;</span>
<span class="line" id="L118"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (literals.header.block_type == .treeless <span class="tok-kw">and</span> self.huffman_tree == <span class="tok-null">null</span>) {</span>
<span class="line" id="L119"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.TreelessLiteralsFirst;</span>
<span class="line" id="L120"> }</span>
<span class="line" id="L121"></span>
<span class="line" id="L122"> <span class="tok-kw">switch</span> (literals.header.block_type) {</span>
<span class="line" id="L123"> .raw, .rle => {},</span>
<span class="line" id="L124"> .compressed, .treeless => {</span>
<span class="line" id="L125"> self.literal_stream_index = <span class="tok-number">0</span>;</span>
<span class="line" id="L126"> <span class="tok-kw">switch</span> (literals.streams) {</span>
<span class="line" id="L127"> .one => |slice| <span class="tok-kw">try</span> self.initLiteralStream(slice),</span>
<span class="line" id="L128"> .four => |streams| <span class="tok-kw">try</span> self.initLiteralStream(streams[<span class="tok-number">0</span>]),</span>
<span class="line" id="L129"> }</span>
<span class="line" id="L130"> },</span>
<span class="line" id="L131"> }</span>
<span class="line" id="L132"></span>
<span class="line" id="L133"> <span class="tok-kw">if</span> (sequences_header.sequence_count > <span class="tok-number">0</span>) {</span>
<span class="line" id="L134"> <span class="tok-kw">try</span> self.updateFseTable(source, .literal, sequences_header.literal_lengths);</span>
<span class="line" id="L135"> <span class="tok-kw">try</span> self.updateFseTable(source, .offset, sequences_header.offsets);</span>
<span class="line" id="L136"> <span class="tok-kw">try</span> self.updateFseTable(source, .match, sequences_header.match_lengths);</span>
<span class="line" id="L137"> self.fse_tables_undefined = <span class="tok-null">false</span>;</span>
<span class="line" id="L138"> }</span>
<span class="line" id="L139"> }</span>
<span class="line" id="L140"></span>
<span class="line" id="L141"> <span class="tok-comment">/// Read initial FSE states for sequence decoding.</span></span>
<span class="line" id="L142"> <span class="tok-comment">///</span></span>
<span class="line" id="L143"> <span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L144"> <span class="tok-comment">/// - `error.EndOfStream` if `bit_reader` does not contain enough bits.</span></span>
<span class="line" id="L145"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">readInitialFseState</span>(self: *DecodeState, bit_reader: *readers.ReverseBitReader) <span class="tok-kw">error</span>{EndOfStream}!<span class="tok-type">void</span> {</span>
<span class="line" id="L146"> self.literal.state = <span class="tok-kw">try</span> bit_reader.readBitsNoEof(<span class="tok-type">u9</span>, self.literal.accuracy_log);</span>
<span class="line" id="L147"> self.offset.state = <span class="tok-kw">try</span> bit_reader.readBitsNoEof(<span class="tok-type">u8</span>, self.offset.accuracy_log);</span>
<span class="line" id="L148"> self.match.state = <span class="tok-kw">try</span> bit_reader.readBitsNoEof(<span class="tok-type">u9</span>, self.match.accuracy_log);</span>
<span class="line" id="L149"> }</span>
<span class="line" id="L150"></span>
<span class="line" id="L151"> <span class="tok-kw">fn</span> <span class="tok-fn">updateRepeatOffset</span>(self: *DecodeState, offset: <span class="tok-type">u32</span>) <span class="tok-type">void</span> {</span>
<span class="line" id="L152"> self.repeat_offsets[<span class="tok-number">2</span>] = self.repeat_offsets[<span class="tok-number">1</span>];</span>
<span class="line" id="L153"> self.repeat_offsets[<span class="tok-number">1</span>] = self.repeat_offsets[<span class="tok-number">0</span>];</span>
<span class="line" id="L154"> self.repeat_offsets[<span class="tok-number">0</span>] = offset;</span>
<span class="line" id="L155"> }</span>
<span class="line" id="L156"></span>
<span class="line" id="L157"> <span class="tok-kw">fn</span> <span class="tok-fn">useRepeatOffset</span>(self: *DecodeState, index: <span class="tok-type">usize</span>) <span class="tok-type">u32</span> {</span>
<span class="line" id="L158"> <span class="tok-kw">if</span> (index == <span class="tok-number">1</span>)</span>
<span class="line" id="L159"> std.mem.swap(<span class="tok-type">u32</span>, &self.repeat_offsets[<span class="tok-number">0</span>], &self.repeat_offsets[<span class="tok-number">1</span>])</span>
<span class="line" id="L160"> <span class="tok-kw">else</span> <span class="tok-kw">if</span> (index == <span class="tok-number">2</span>) {</span>
<span class="line" id="L161"> std.mem.swap(<span class="tok-type">u32</span>, &self.repeat_offsets[<span class="tok-number">0</span>], &self.repeat_offsets[<span class="tok-number">2</span>]);</span>
<span class="line" id="L162"> std.mem.swap(<span class="tok-type">u32</span>, &self.repeat_offsets[<span class="tok-number">1</span>], &self.repeat_offsets[<span class="tok-number">2</span>]);</span>
<span class="line" id="L163"> }</span>
<span class="line" id="L164"> <span class="tok-kw">return</span> self.repeat_offsets[<span class="tok-number">0</span>];</span>
<span class="line" id="L165"> }</span>
<span class="line" id="L166"></span>
<span class="line" id="L167"> <span class="tok-kw">const</span> DataType = <span class="tok-kw">enum</span> { offset, match, literal };</span>
<span class="line" id="L168"></span>
<span class="line" id="L169"> <span class="tok-kw">fn</span> <span class="tok-fn">updateState</span>(</span>
<span class="line" id="L170"> self: *DecodeState,</span>
<span class="line" id="L171"> <span class="tok-kw">comptime</span> choice: DataType,</span>
<span class="line" id="L172"> bit_reader: *readers.ReverseBitReader,</span>
<span class="line" id="L173"> ) <span class="tok-kw">error</span>{ MalformedFseBits, EndOfStream }!<span class="tok-type">void</span> {</span>
<span class="line" id="L174"> <span class="tok-kw">switch</span> (<span class="tok-builtin">@field</span>(self, <span class="tok-builtin">@tagName</span>(choice)).table) {</span>
<span class="line" id="L175"> .rle => {},</span>
<span class="line" id="L176"> .fse => |table| {</span>
<span class="line" id="L177"> <span class="tok-kw">const</span> data = table[<span class="tok-builtin">@field</span>(self, <span class="tok-builtin">@tagName</span>(choice)).state];</span>
<span class="line" id="L178"> <span class="tok-kw">const</span> T = <span class="tok-builtin">@TypeOf</span>(<span class="tok-builtin">@field</span>(self, <span class="tok-builtin">@tagName</span>(choice))).State;</span>
<span class="line" id="L179"> <span class="tok-kw">const</span> bits_summand = <span class="tok-kw">try</span> bit_reader.readBitsNoEof(T, data.bits);</span>
<span class="line" id="L180"> <span class="tok-kw">const</span> next_state = std.math.cast(</span>
<span class="line" id="L181"> <span class="tok-builtin">@TypeOf</span>(<span class="tok-builtin">@field</span>(self, <span class="tok-builtin">@tagName</span>(choice))).State,</span>
<span class="line" id="L182"> data.baseline + bits_summand,</span>
<span class="line" id="L183"> ) <span class="tok-kw">orelse</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedFseBits;</span>
<span class="line" id="L184"> <span class="tok-builtin">@field</span>(self, <span class="tok-builtin">@tagName</span>(choice)).state = next_state;</span>
<span class="line" id="L185"> },</span>
<span class="line" id="L186"> }</span>
<span class="line" id="L187"> }</span>
<span class="line" id="L188"></span>
<span class="line" id="L189"> <span class="tok-kw">const</span> FseTableError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L190"> MalformedFseTable,</span>
<span class="line" id="L191"> MalformedAccuracyLog,</span>
<span class="line" id="L192"> RepeatModeFirst,</span>
<span class="line" id="L193"> EndOfStream,</span>
<span class="line" id="L194"> };</span>
<span class="line" id="L195"></span>
<span class="line" id="L196"> <span class="tok-kw">fn</span> <span class="tok-fn">updateFseTable</span>(</span>
<span class="line" id="L197"> self: *DecodeState,</span>
<span class="line" id="L198"> source: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L199"> <span class="tok-kw">comptime</span> choice: DataType,</span>
<span class="line" id="L200"> mode: SequencesSection.Header.Mode,</span>
<span class="line" id="L201"> ) !<span class="tok-type">void</span> {</span>
<span class="line" id="L202"> <span class="tok-kw">const</span> field_name = <span class="tok-builtin">@tagName</span>(choice);</span>
<span class="line" id="L203"> <span class="tok-kw">switch</span> (mode) {</span>
<span class="line" id="L204"> .predefined => {</span>
<span class="line" id="L205"> <span class="tok-builtin">@field</span>(self, field_name).accuracy_log =</span>
<span class="line" id="L206"> <span class="tok-builtin">@field</span>(types.compressed_block.default_accuracy_log, field_name);</span>
<span class="line" id="L207"></span>
<span class="line" id="L208"> <span class="tok-builtin">@field</span>(self, field_name).table =</span>
<span class="line" id="L209"> <span class="tok-builtin">@field</span>(types.compressed_block, <span class="tok-str">"predefined_"</span> ++ field_name ++ <span class="tok-str">"_fse_table"</span>);</span>
<span class="line" id="L210"> },</span>
<span class="line" id="L211"> .rle => {</span>
<span class="line" id="L212"> <span class="tok-builtin">@field</span>(self, field_name).accuracy_log = <span class="tok-number">0</span>;</span>
<span class="line" id="L213"> <span class="tok-builtin">@field</span>(self, field_name).table = .{ .rle = <span class="tok-kw">try</span> source.readByte() };</span>
<span class="line" id="L214"> },</span>
<span class="line" id="L215"> .fse => {</span>
<span class="line" id="L216"> <span class="tok-kw">var</span> bit_reader = readers.bitReader(source);</span>
<span class="line" id="L217"></span>
<span class="line" id="L218"> <span class="tok-kw">const</span> table_size = <span class="tok-kw">try</span> decodeFseTable(</span>
<span class="line" id="L219"> &bit_reader,</span>
<span class="line" id="L220"> <span class="tok-builtin">@field</span>(types.compressed_block.table_symbol_count_max, field_name),</span>
<span class="line" id="L221"> <span class="tok-builtin">@field</span>(types.compressed_block.table_accuracy_log_max, field_name),</span>
<span class="line" id="L222"> <span class="tok-builtin">@field</span>(self, field_name ++ <span class="tok-str">"_fse_buffer"</span>),</span>
<span class="line" id="L223"> );</span>
<span class="line" id="L224"> <span class="tok-builtin">@field</span>(self, field_name).table = .{</span>
<span class="line" id="L225"> .fse = <span class="tok-builtin">@field</span>(self, field_name ++ <span class="tok-str">"_fse_buffer"</span>)[<span class="tok-number">0</span>..table_size],</span>
<span class="line" id="L226"> };</span>
<span class="line" id="L227"> <span class="tok-builtin">@field</span>(self, field_name).accuracy_log = std.math.log2_int_ceil(<span class="tok-type">usize</span>, table_size);</span>
<span class="line" id="L228"> },</span>
<span class="line" id="L229"> .repeat => <span class="tok-kw">if</span> (self.fse_tables_undefined) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.RepeatModeFirst,</span>
<span class="line" id="L230"> }</span>
<span class="line" id="L231"> }</span>
<span class="line" id="L232"></span>
<span class="line" id="L233"> <span class="tok-kw">const</span> Sequence = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L234"> literal_length: <span class="tok-type">u32</span>,</span>
<span class="line" id="L235"> match_length: <span class="tok-type">u32</span>,</span>
<span class="line" id="L236"> offset: <span class="tok-type">u32</span>,</span>
<span class="line" id="L237"> };</span>
<span class="line" id="L238"></span>
<span class="line" id="L239"> <span class="tok-kw">fn</span> <span class="tok-fn">nextSequence</span>(</span>
<span class="line" id="L240"> self: *DecodeState,</span>
<span class="line" id="L241"> bit_reader: *readers.ReverseBitReader,</span>
<span class="line" id="L242"> ) <span class="tok-kw">error</span>{ InvalidBitStream, EndOfStream }!Sequence {</span>
<span class="line" id="L243"> <span class="tok-kw">const</span> raw_code = self.getCode(.offset);</span>
<span class="line" id="L244"> <span class="tok-kw">const</span> offset_code = std.math.cast(<span class="tok-type">u5</span>, raw_code) <span class="tok-kw">orelse</span> {</span>
<span class="line" id="L245"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidBitStream;</span>
<span class="line" id="L246"> };</span>
<span class="line" id="L247"> <span class="tok-kw">const</span> offset_value = (<span class="tok-builtin">@as</span>(<span class="tok-type">u32</span>, <span class="tok-number">1</span>) << offset_code) + <span class="tok-kw">try</span> bit_reader.readBitsNoEof(<span class="tok-type">u32</span>, offset_code);</span>
<span class="line" id="L248"></span>
<span class="line" id="L249"> <span class="tok-kw">const</span> match_code = self.getCode(.match);</span>
<span class="line" id="L250"> <span class="tok-kw">if</span> (match_code >= types.compressed_block.match_length_code_table.len)</span>
<span class="line" id="L251"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidBitStream;</span>
<span class="line" id="L252"> <span class="tok-kw">const</span> match = types.compressed_block.match_length_code_table[match_code];</span>
<span class="line" id="L253"> <span class="tok-kw">const</span> match_length = match[<span class="tok-number">0</span>] + <span class="tok-kw">try</span> bit_reader.readBitsNoEof(<span class="tok-type">u32</span>, match[<span class="tok-number">1</span>]);</span>
<span class="line" id="L254"></span>
<span class="line" id="L255"> <span class="tok-kw">const</span> literal_code = self.getCode(.literal);</span>
<span class="line" id="L256"> <span class="tok-kw">if</span> (literal_code >= types.compressed_block.literals_length_code_table.len)</span>
<span class="line" id="L257"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidBitStream;</span>
<span class="line" id="L258"> <span class="tok-kw">const</span> literal = types.compressed_block.literals_length_code_table[literal_code];</span>
<span class="line" id="L259"> <span class="tok-kw">const</span> literal_length = literal[<span class="tok-number">0</span>] + <span class="tok-kw">try</span> bit_reader.readBitsNoEof(<span class="tok-type">u32</span>, literal[<span class="tok-number">1</span>]);</span>
<span class="line" id="L260"></span>
<span class="line" id="L261"> <span class="tok-kw">const</span> offset = <span class="tok-kw">if</span> (offset_value > <span class="tok-number">3</span>) offset: {</span>
<span class="line" id="L262"> <span class="tok-kw">const</span> offset = offset_value - <span class="tok-number">3</span>;</span>
<span class="line" id="L263"> self.updateRepeatOffset(offset);</span>
<span class="line" id="L264"> <span class="tok-kw">break</span> :offset offset;</span>
<span class="line" id="L265"> } <span class="tok-kw">else</span> offset: {</span>
<span class="line" id="L266"> <span class="tok-kw">if</span> (literal_length == <span class="tok-number">0</span>) {</span>
<span class="line" id="L267"> <span class="tok-kw">if</span> (offset_value == <span class="tok-number">3</span>) {</span>
<span class="line" id="L268"> <span class="tok-kw">const</span> offset = self.repeat_offsets[<span class="tok-number">0</span>] - <span class="tok-number">1</span>;</span>
<span class="line" id="L269"> self.updateRepeatOffset(offset);</span>
<span class="line" id="L270"> <span class="tok-kw">break</span> :offset offset;</span>
<span class="line" id="L271"> }</span>
<span class="line" id="L272"> <span class="tok-kw">break</span> :offset self.useRepeatOffset(offset_value);</span>
<span class="line" id="L273"> }</span>
<span class="line" id="L274"> <span class="tok-kw">break</span> :offset self.useRepeatOffset(offset_value - <span class="tok-number">1</span>);</span>
<span class="line" id="L275"> };</span>
<span class="line" id="L276"></span>
<span class="line" id="L277"> <span class="tok-kw">if</span> (offset == <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.InvalidBitStream;</span>
<span class="line" id="L278"></span>
<span class="line" id="L279"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L280"> .literal_length = literal_length,</span>
<span class="line" id="L281"> .match_length = match_length,</span>
<span class="line" id="L282"> .offset = offset,</span>
<span class="line" id="L283"> };</span>
<span class="line" id="L284"> }</span>
<span class="line" id="L285"></span>
<span class="line" id="L286"> <span class="tok-kw">fn</span> <span class="tok-fn">executeSequenceSlice</span>(</span>
<span class="line" id="L287"> self: *DecodeState,</span>
<span class="line" id="L288"> dest: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L289"> write_pos: <span class="tok-type">usize</span>,</span>
<span class="line" id="L290"> sequence: Sequence,</span>
<span class="line" id="L291"> ) (<span class="tok-kw">error</span>{MalformedSequence} || DecodeLiteralsError)!<span class="tok-type">void</span> {</span>
<span class="line" id="L292"> <span class="tok-kw">if</span> (sequence.offset > write_pos + sequence.literal_length) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedSequence;</span>
<span class="line" id="L293"></span>
<span class="line" id="L294"> <span class="tok-kw">try</span> self.decodeLiteralsSlice(dest[write_pos..], sequence.literal_length);</span>
<span class="line" id="L295"> <span class="tok-kw">const</span> copy_start = write_pos + sequence.literal_length - sequence.offset;</span>
<span class="line" id="L296"> <span class="tok-kw">for</span> (</span>
<span class="line" id="L297"> dest[write_pos + sequence.literal_length ..][<span class="tok-number">0</span>..sequence.match_length],</span>
<span class="line" id="L298"> dest[copy_start..][<span class="tok-number">0</span>..sequence.match_length],</span>
<span class="line" id="L299"> ) |*d, s| d.* = s;</span>
<span class="line" id="L300"> self.written_count += sequence.match_length;</span>
<span class="line" id="L301"> }</span>
<span class="line" id="L302"></span>
<span class="line" id="L303"> <span class="tok-kw">fn</span> <span class="tok-fn">executeSequenceRingBuffer</span>(</span>
<span class="line" id="L304"> self: *DecodeState,</span>
<span class="line" id="L305"> dest: *RingBuffer,</span>
<span class="line" id="L306"> sequence: Sequence,</span>
<span class="line" id="L307"> ) (<span class="tok-kw">error</span>{MalformedSequence} || DecodeLiteralsError)!<span class="tok-type">void</span> {</span>
<span class="line" id="L308"> <span class="tok-kw">if</span> (sequence.offset > <span class="tok-builtin">@min</span>(dest.data.len, self.written_count + sequence.literal_length))</span>
<span class="line" id="L309"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedSequence;</span>
<span class="line" id="L310"></span>
<span class="line" id="L311"> <span class="tok-kw">try</span> self.decodeLiteralsRingBuffer(dest, sequence.literal_length);</span>
<span class="line" id="L312"> <span class="tok-kw">const</span> copy_start = dest.write_index + dest.data.len - sequence.offset;</span>
<span class="line" id="L313"> <span class="tok-kw">const</span> copy_slice = dest.sliceAt(copy_start, sequence.match_length);</span>
<span class="line" id="L314"> <span class="tok-kw">for</span> (copy_slice.first) |b| dest.writeAssumeCapacity(b);</span>
<span class="line" id="L315"> <span class="tok-kw">for</span> (copy_slice.second) |b| dest.writeAssumeCapacity(b);</span>
<span class="line" id="L316"> self.written_count += sequence.match_length;</span>
<span class="line" id="L317"> }</span>
<span class="line" id="L318"></span>
<span class="line" id="L319"> <span class="tok-kw">const</span> DecodeSequenceError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L320"> InvalidBitStream,</span>
<span class="line" id="L321"> EndOfStream,</span>
<span class="line" id="L322"> MalformedSequence,</span>
<span class="line" id="L323"> MalformedFseBits,</span>
<span class="line" id="L324"> } || DecodeLiteralsError;</span>
<span class="line" id="L325"></span>
<span class="line" id="L326"> <span class="tok-comment">/// Decode one sequence from `bit_reader` into `dest`, written starting at</span></span>
<span class="line" id="L327"> <span class="tok-comment">/// `write_pos` and update FSE states if `last_sequence` is `false`.</span></span>
<span class="line" id="L328"> <span class="tok-comment">/// `prepare()` must be called for the block before attempting to decode</span></span>
<span class="line" id="L329"> <span class="tok-comment">/// sequences.</span></span>
<span class="line" id="L330"> <span class="tok-comment">///</span></span>
<span class="line" id="L331"> <span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L332"> <span class="tok-comment">/// - `error.MalformedSequence` if the decompressed sequence would be</span></span>
<span class="line" id="L333"> <span class="tok-comment">/// longer than `sequence_size_limit` or the sequence's offset is too</span></span>
<span class="line" id="L334"> <span class="tok-comment">/// large</span></span>
<span class="line" id="L335"> <span class="tok-comment">/// - `error.UnexpectedEndOfLiteralStream` if the decoder state's literal</span></span>
<span class="line" id="L336"> <span class="tok-comment">/// streams do not contain enough literals for the sequence (this may</span></span>
<span class="line" id="L337"> <span class="tok-comment">/// mean the literal stream or the sequence is malformed).</span></span>
<span class="line" id="L338"> <span class="tok-comment">/// - `error.InvalidBitStream` if the FSE sequence bitstream is malformed</span></span>
<span class="line" id="L339"> <span class="tok-comment">/// - `error.EndOfStream` if `bit_reader` does not contain enough bits</span></span>
<span class="line" id="L340"> <span class="tok-comment">/// - `error.DestTooSmall` if `dest` is not large enough to holde the</span></span>
<span class="line" id="L341"> <span class="tok-comment">/// decompressed sequence</span></span>
<span class="line" id="L342"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeSequenceSlice</span>(</span>
<span class="line" id="L343"> self: *DecodeState,</span>
<span class="line" id="L344"> dest: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L345"> write_pos: <span class="tok-type">usize</span>,</span>
<span class="line" id="L346"> bit_reader: *readers.ReverseBitReader,</span>
<span class="line" id="L347"> sequence_size_limit: <span class="tok-type">usize</span>,</span>
<span class="line" id="L348"> last_sequence: <span class="tok-type">bool</span>,</span>
<span class="line" id="L349"> ) (<span class="tok-kw">error</span>{DestTooSmall} || DecodeSequenceError)!<span class="tok-type">usize</span> {</span>
<span class="line" id="L350"> <span class="tok-kw">const</span> sequence = <span class="tok-kw">try</span> self.nextSequence(bit_reader);</span>
<span class="line" id="L351"> <span class="tok-kw">const</span> sequence_length = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, sequence.literal_length) + sequence.match_length;</span>
<span class="line" id="L352"> <span class="tok-kw">if</span> (sequence_length > sequence_size_limit) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedSequence;</span>
<span class="line" id="L353"> <span class="tok-kw">if</span> (sequence_length > dest[write_pos..].len) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.DestTooSmall;</span>
<span class="line" id="L354"></span>
<span class="line" id="L355"> <span class="tok-kw">try</span> self.executeSequenceSlice(dest, write_pos, sequence);</span>
<span class="line" id="L356"> <span class="tok-kw">if</span> (!last_sequence) {</span>
<span class="line" id="L357"> <span class="tok-kw">try</span> self.updateState(.literal, bit_reader);</span>
<span class="line" id="L358"> <span class="tok-kw">try</span> self.updateState(.match, bit_reader);</span>
<span class="line" id="L359"> <span class="tok-kw">try</span> self.updateState(.offset, bit_reader);</span>
<span class="line" id="L360"> }</span>
<span class="line" id="L361"> <span class="tok-kw">return</span> sequence_length;</span>
<span class="line" id="L362"> }</span>
<span class="line" id="L363"></span>
<span class="line" id="L364"> <span class="tok-comment">/// Decode one sequence from `bit_reader` into `dest`; see</span></span>
<span class="line" id="L365"> <span class="tok-comment">/// `decodeSequenceSlice`.</span></span>
<span class="line" id="L366"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeSequenceRingBuffer</span>(</span>
<span class="line" id="L367"> self: *DecodeState,</span>
<span class="line" id="L368"> dest: *RingBuffer,</span>
<span class="line" id="L369"> bit_reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L370"> sequence_size_limit: <span class="tok-type">usize</span>,</span>
<span class="line" id="L371"> last_sequence: <span class="tok-type">bool</span>,</span>
<span class="line" id="L372"> ) DecodeSequenceError!<span class="tok-type">usize</span> {</span>
<span class="line" id="L373"> <span class="tok-kw">const</span> sequence = <span class="tok-kw">try</span> self.nextSequence(bit_reader);</span>
<span class="line" id="L374"> <span class="tok-kw">const</span> sequence_length = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, sequence.literal_length) + sequence.match_length;</span>
<span class="line" id="L375"> <span class="tok-kw">if</span> (sequence_length > sequence_size_limit) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedSequence;</span>
<span class="line" id="L376"></span>
<span class="line" id="L377"> <span class="tok-kw">try</span> self.executeSequenceRingBuffer(dest, sequence);</span>
<span class="line" id="L378"> <span class="tok-kw">if</span> (!last_sequence) {</span>
<span class="line" id="L379"> <span class="tok-kw">try</span> self.updateState(.literal, bit_reader);</span>
<span class="line" id="L380"> <span class="tok-kw">try</span> self.updateState(.match, bit_reader);</span>
<span class="line" id="L381"> <span class="tok-kw">try</span> self.updateState(.offset, bit_reader);</span>
<span class="line" id="L382"> }</span>
<span class="line" id="L383"> <span class="tok-kw">return</span> sequence_length;</span>
<span class="line" id="L384"> }</span>
<span class="line" id="L385"></span>
<span class="line" id="L386"> <span class="tok-kw">fn</span> <span class="tok-fn">nextLiteralMultiStream</span>(</span>
<span class="line" id="L387"> self: *DecodeState,</span>
<span class="line" id="L388"> ) <span class="tok-kw">error</span>{BitStreamHasNoStartBit}!<span class="tok-type">void</span> {</span>
<span class="line" id="L389"> self.literal_stream_index += <span class="tok-number">1</span>;</span>
<span class="line" id="L390"> <span class="tok-kw">try</span> self.initLiteralStream(self.literal_streams.four[self.literal_stream_index]);</span>
<span class="line" id="L391"> }</span>
<span class="line" id="L392"></span>
<span class="line" id="L393"> <span class="tok-kw">fn</span> <span class="tok-fn">initLiteralStream</span>(self: *DecodeState, bytes: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-kw">error</span>{BitStreamHasNoStartBit}!<span class="tok-type">void</span> {</span>
<span class="line" id="L394"> <span class="tok-kw">try</span> self.literal_stream_reader.init(bytes);</span>
<span class="line" id="L395"> }</span>
<span class="line" id="L396"></span>
<span class="line" id="L397"> <span class="tok-kw">fn</span> <span class="tok-fn">isLiteralStreamEmpty</span>(self: *DecodeState) <span class="tok-type">bool</span> {</span>
<span class="line" id="L398"> <span class="tok-kw">switch</span> (self.literal_streams) {</span>
<span class="line" id="L399"> .one => <span class="tok-kw">return</span> self.literal_stream_reader.isEmpty(),</span>
<span class="line" id="L400"> .four => <span class="tok-kw">return</span> self.literal_stream_index == <span class="tok-number">3</span> <span class="tok-kw">and</span> self.literal_stream_reader.isEmpty(),</span>
<span class="line" id="L401"> }</span>
<span class="line" id="L402"> }</span>
<span class="line" id="L403"></span>
<span class="line" id="L404"> <span class="tok-kw">const</span> LiteralBitsError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L405"> BitStreamHasNoStartBit,</span>
<span class="line" id="L406"> UnexpectedEndOfLiteralStream,</span>
<span class="line" id="L407"> };</span>
<span class="line" id="L408"> <span class="tok-kw">fn</span> <span class="tok-fn">readLiteralsBits</span>(</span>
<span class="line" id="L409"> self: *DecodeState,</span>
<span class="line" id="L410"> bit_count_to_read: <span class="tok-type">usize</span>,</span>
<span class="line" id="L411"> ) LiteralBitsError!<span class="tok-type">u16</span> {</span>
<span class="line" id="L412"> <span class="tok-kw">return</span> self.literal_stream_reader.readBitsNoEof(<span class="tok-type">u16</span>, bit_count_to_read) <span class="tok-kw">catch</span> bits: {</span>
<span class="line" id="L413"> <span class="tok-kw">if</span> (self.literal_streams == .four <span class="tok-kw">and</span> self.literal_stream_index < <span class="tok-number">3</span>) {</span>
<span class="line" id="L414"> <span class="tok-kw">try</span> self.nextLiteralMultiStream();</span>
<span class="line" id="L415"> <span class="tok-kw">break</span> :bits self.literal_stream_reader.readBitsNoEof(<span class="tok-type">u16</span>, bit_count_to_read) <span class="tok-kw">catch</span></span>
<span class="line" id="L416"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnexpectedEndOfLiteralStream;</span>
<span class="line" id="L417"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L418"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.UnexpectedEndOfLiteralStream;</span>
<span class="line" id="L419"> }</span>
<span class="line" id="L420"> };</span>
<span class="line" id="L421"> }</span>
<span class="line" id="L422"></span>
<span class="line" id="L423"> <span class="tok-kw">const</span> DecodeLiteralsError = <span class="tok-kw">error</span>{</span>
<span class="line" id="L424"> MalformedLiteralsLength,</span>
<span class="line" id="L425"> NotFound,</span>
<span class="line" id="L426"> } || LiteralBitsError;</span>
<span class="line" id="L427"></span>
<span class="line" id="L428"> <span class="tok-comment">/// Decode `len` bytes of literals into `dest`.</span></span>
<span class="line" id="L429"> <span class="tok-comment">///</span></span>
<span class="line" id="L430"> <span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L431"> <span class="tok-comment">/// - `error.MalformedLiteralsLength` if the number of literal bytes</span></span>
<span class="line" id="L432"> <span class="tok-comment">/// decoded by `self` plus `len` is greater than the regenerated size of</span></span>
<span class="line" id="L433"> <span class="tok-comment">/// `literals`</span></span>
<span class="line" id="L434"> <span class="tok-comment">/// - `error.UnexpectedEndOfLiteralStream` and `error.NotFound` if there</span></span>
<span class="line" id="L435"> <span class="tok-comment">/// are problems decoding Huffman compressed literals</span></span>
<span class="line" id="L436"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeLiteralsSlice</span>(</span>
<span class="line" id="L437"> self: *DecodeState,</span>
<span class="line" id="L438"> dest: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L439"> len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L440"> ) DecodeLiteralsError!<span class="tok-type">void</span> {</span>
<span class="line" id="L441"> <span class="tok-kw">if</span> (self.literal_written_count + len > self.literal_header.regenerated_size)</span>
<span class="line" id="L442"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedLiteralsLength;</span>
<span class="line" id="L443"></span>
<span class="line" id="L444"> <span class="tok-kw">switch</span> (self.literal_header.block_type) {</span>
<span class="line" id="L445"> .raw => {</span>
<span class="line" id="L446"> <span class="tok-kw">const</span> literal_data = self.literal_streams.one[self.literal_written_count..][<span class="tok-number">0</span>..len];</span>
<span class="line" id="L447"> <span class="tok-builtin">@memcpy</span>(dest[<span class="tok-number">0</span>..len], literal_data);</span>
<span class="line" id="L448"> self.literal_written_count += len;</span>
<span class="line" id="L449"> self.written_count += len;</span>
<span class="line" id="L450"> },</span>
<span class="line" id="L451"> .rle => {</span>
<span class="line" id="L452"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..len) |i| {</span>
<span class="line" id="L453"> dest[i] = self.literal_streams.one[<span class="tok-number">0</span>];</span>
<span class="line" id="L454"> }</span>
<span class="line" id="L455"> self.literal_written_count += len;</span>
<span class="line" id="L456"> self.written_count += len;</span>
<span class="line" id="L457"> },</span>
<span class="line" id="L458"> .compressed, .treeless => {</span>
<span class="line" id="L459"> <span class="tok-comment">// const written_bytes_per_stream = (literals.header.regenerated_size + 3) / 4;</span>
</span>
<span class="line" id="L460"> <span class="tok-kw">const</span> huffman_tree = self.huffman_tree <span class="tok-kw">orelse</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L461"> <span class="tok-kw">const</span> max_bit_count = huffman_tree.max_bit_count;</span>
<span class="line" id="L462"> <span class="tok-kw">const</span> starting_bit_count = LiteralsSection.HuffmanTree.weightToBitCount(</span>
<span class="line" id="L463"> huffman_tree.nodes[huffman_tree.symbol_count_minus_one].weight,</span>
<span class="line" id="L464"> max_bit_count,</span>
<span class="line" id="L465"> );</span>
<span class="line" id="L466"> <span class="tok-kw">var</span> bits_read: <span class="tok-type">u4</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L467"> <span class="tok-kw">var</span> huffman_tree_index: <span class="tok-type">usize</span> = huffman_tree.symbol_count_minus_one;</span>
<span class="line" id="L468"> <span class="tok-kw">var</span> bit_count_to_read: <span class="tok-type">u4</span> = starting_bit_count;</span>
<span class="line" id="L469"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..len) |i| {</span>
<span class="line" id="L470"> <span class="tok-kw">var</span> prefix: <span class="tok-type">u16</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L471"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L472"> <span class="tok-kw">const</span> new_bits = self.readLiteralsBits(bit_count_to_read) <span class="tok-kw">catch</span> |err| {</span>
<span class="line" id="L473"> <span class="tok-kw">return</span> err;</span>
<span class="line" id="L474"> };</span>
<span class="line" id="L475"> prefix <<= bit_count_to_read;</span>
<span class="line" id="L476"> prefix |= new_bits;</span>
<span class="line" id="L477"> bits_read += bit_count_to_read;</span>
<span class="line" id="L478"> <span class="tok-kw">const</span> result = huffman_tree.query(huffman_tree_index, prefix) <span class="tok-kw">catch</span> |err| {</span>
<span class="line" id="L479"> <span class="tok-kw">return</span> err;</span>
<span class="line" id="L480"> };</span>
<span class="line" id="L481"></span>
<span class="line" id="L482"> <span class="tok-kw">switch</span> (result) {</span>
<span class="line" id="L483"> .symbol => |sym| {</span>
<span class="line" id="L484"> dest[i] = sym;</span>
<span class="line" id="L485"> bit_count_to_read = starting_bit_count;</span>
<span class="line" id="L486"> bits_read = <span class="tok-number">0</span>;</span>
<span class="line" id="L487"> huffman_tree_index = huffman_tree.symbol_count_minus_one;</span>
<span class="line" id="L488"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L489"> },</span>
<span class="line" id="L490"> .index => |index| {</span>
<span class="line" id="L491"> huffman_tree_index = index;</span>
<span class="line" id="L492"> <span class="tok-kw">const</span> bit_count = LiteralsSection.HuffmanTree.weightToBitCount(</span>
<span class="line" id="L493"> huffman_tree.nodes[index].weight,</span>
<span class="line" id="L494"> max_bit_count,</span>
<span class="line" id="L495"> );</span>
<span class="line" id="L496"> bit_count_to_read = bit_count - bits_read;</span>
<span class="line" id="L497"> },</span>
<span class="line" id="L498"> }</span>
<span class="line" id="L499"> }</span>
<span class="line" id="L500"> }</span>
<span class="line" id="L501"> self.literal_written_count += len;</span>
<span class="line" id="L502"> self.written_count += len;</span>
<span class="line" id="L503"> },</span>
<span class="line" id="L504"> }</span>
<span class="line" id="L505"> }</span>
<span class="line" id="L506"></span>
<span class="line" id="L507"> <span class="tok-comment">/// Decode literals into `dest`; see `decodeLiteralsSlice()`.</span></span>
<span class="line" id="L508"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeLiteralsRingBuffer</span>(</span>
<span class="line" id="L509"> self: *DecodeState,</span>
<span class="line" id="L510"> dest: *RingBuffer,</span>
<span class="line" id="L511"> len: <span class="tok-type">usize</span>,</span>
<span class="line" id="L512"> ) DecodeLiteralsError!<span class="tok-type">void</span> {</span>
<span class="line" id="L513"> <span class="tok-kw">if</span> (self.literal_written_count + len > self.literal_header.regenerated_size)</span>
<span class="line" id="L514"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedLiteralsLength;</span>
<span class="line" id="L515"></span>
<span class="line" id="L516"> <span class="tok-kw">switch</span> (self.literal_header.block_type) {</span>
<span class="line" id="L517"> .raw => {</span>
<span class="line" id="L518"> <span class="tok-kw">const</span> literals_end = self.literal_written_count + len;</span>
<span class="line" id="L519"> <span class="tok-kw">const</span> literal_data = self.literal_streams.one[self.literal_written_count..literals_end];</span>
<span class="line" id="L520"> dest.writeSliceAssumeCapacity(literal_data);</span>
<span class="line" id="L521"> self.literal_written_count += len;</span>
<span class="line" id="L522"> self.written_count += len;</span>
<span class="line" id="L523"> },</span>
<span class="line" id="L524"> .rle => {</span>
<span class="line" id="L525"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..len) |_| {</span>
<span class="line" id="L526"> dest.writeAssumeCapacity(self.literal_streams.one[<span class="tok-number">0</span>]);</span>
<span class="line" id="L527"> }</span>
<span class="line" id="L528"> self.literal_written_count += len;</span>
<span class="line" id="L529"> self.written_count += len;</span>
<span class="line" id="L530"> },</span>
<span class="line" id="L531"> .compressed, .treeless => {</span>
<span class="line" id="L532"> <span class="tok-comment">// const written_bytes_per_stream = (literals.header.regenerated_size + 3) / 4;</span>
</span>
<span class="line" id="L533"> <span class="tok-kw">const</span> huffman_tree = self.huffman_tree <span class="tok-kw">orelse</span> <span class="tok-kw">unreachable</span>;</span>
<span class="line" id="L534"> <span class="tok-kw">const</span> max_bit_count = huffman_tree.max_bit_count;</span>
<span class="line" id="L535"> <span class="tok-kw">const</span> starting_bit_count = LiteralsSection.HuffmanTree.weightToBitCount(</span>
<span class="line" id="L536"> huffman_tree.nodes[huffman_tree.symbol_count_minus_one].weight,</span>
<span class="line" id="L537"> max_bit_count,</span>
<span class="line" id="L538"> );</span>
<span class="line" id="L539"> <span class="tok-kw">var</span> bits_read: <span class="tok-type">u4</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L540"> <span class="tok-kw">var</span> huffman_tree_index: <span class="tok-type">usize</span> = huffman_tree.symbol_count_minus_one;</span>
<span class="line" id="L541"> <span class="tok-kw">var</span> bit_count_to_read: <span class="tok-type">u4</span> = starting_bit_count;</span>
<span class="line" id="L542"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..len) |_| {</span>
<span class="line" id="L543"> <span class="tok-kw">var</span> prefix: <span class="tok-type">u16</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L544"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L545"> <span class="tok-kw">const</span> new_bits = <span class="tok-kw">try</span> self.readLiteralsBits(bit_count_to_read);</span>
<span class="line" id="L546"> prefix <<= bit_count_to_read;</span>
<span class="line" id="L547"> prefix |= new_bits;</span>
<span class="line" id="L548"> bits_read += bit_count_to_read;</span>
<span class="line" id="L549"> <span class="tok-kw">const</span> result = <span class="tok-kw">try</span> huffman_tree.query(huffman_tree_index, prefix);</span>
<span class="line" id="L550"></span>
<span class="line" id="L551"> <span class="tok-kw">switch</span> (result) {</span>
<span class="line" id="L552"> .symbol => |sym| {</span>
<span class="line" id="L553"> dest.writeAssumeCapacity(sym);</span>
<span class="line" id="L554"> bit_count_to_read = starting_bit_count;</span>
<span class="line" id="L555"> bits_read = <span class="tok-number">0</span>;</span>
<span class="line" id="L556"> huffman_tree_index = huffman_tree.symbol_count_minus_one;</span>
<span class="line" id="L557"> <span class="tok-kw">break</span>;</span>
<span class="line" id="L558"> },</span>
<span class="line" id="L559"> .index => |index| {</span>
<span class="line" id="L560"> huffman_tree_index = index;</span>
<span class="line" id="L561"> <span class="tok-kw">const</span> bit_count = LiteralsSection.HuffmanTree.weightToBitCount(</span>
<span class="line" id="L562"> huffman_tree.nodes[index].weight,</span>
<span class="line" id="L563"> max_bit_count,</span>
<span class="line" id="L564"> );</span>
<span class="line" id="L565"> bit_count_to_read = bit_count - bits_read;</span>
<span class="line" id="L566"> },</span>
<span class="line" id="L567"> }</span>
<span class="line" id="L568"> }</span>
<span class="line" id="L569"> }</span>
<span class="line" id="L570"> self.literal_written_count += len;</span>
<span class="line" id="L571"> self.written_count += len;</span>
<span class="line" id="L572"> },</span>
<span class="line" id="L573"> }</span>
<span class="line" id="L574"> }</span>
<span class="line" id="L575"></span>
<span class="line" id="L576"> <span class="tok-kw">fn</span> <span class="tok-fn">getCode</span>(self: *DecodeState, <span class="tok-kw">comptime</span> choice: DataType) <span class="tok-type">u32</span> {</span>
<span class="line" id="L577"> <span class="tok-kw">return</span> <span class="tok-kw">switch</span> (<span class="tok-builtin">@field</span>(self, <span class="tok-builtin">@tagName</span>(choice)).table) {</span>
<span class="line" id="L578"> .rle => |value| value,</span>
<span class="line" id="L579"> .fse => |table| table[<span class="tok-builtin">@field</span>(self, <span class="tok-builtin">@tagName</span>(choice)).state].symbol,</span>
<span class="line" id="L580"> };</span>
<span class="line" id="L581"> }</span>
<span class="line" id="L582">};</span>
<span class="line" id="L583"></span>
<span class="line" id="L584"><span class="tok-comment">/// Decode a single block from `src` into `dest`. The beginning of `src` must be</span></span>
<span class="line" id="L585"><span class="tok-comment">/// the start of the block content (i.e. directly after the block header).</span></span>
<span class="line" id="L586"><span class="tok-comment">/// Increments `consumed_count` by the number of bytes read from `src` to decode</span></span>
<span class="line" id="L587"><span class="tok-comment">/// the block and returns the decompressed size of the block.</span></span>
<span class="line" id="L588"><span class="tok-comment">///</span></span>
<span class="line" id="L589"><span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L590"><span class="tok-comment">///</span></span>
<span class="line" id="L591"><span class="tok-comment">/// - `error.BlockSizeOverMaximum` if block's size is larger than 1 << 17 or</span></span>
<span class="line" id="L592"><span class="tok-comment">/// `dest[written_count..].len`</span></span>
<span class="line" id="L593"><span class="tok-comment">/// - `error.MalformedBlockSize` if `src.len` is smaller than the block size</span></span>
<span class="line" id="L594"><span class="tok-comment">/// and the block is a raw or compressed block</span></span>
<span class="line" id="L595"><span class="tok-comment">/// - `error.ReservedBlock` if the block is a reserved block</span></span>
<span class="line" id="L596"><span class="tok-comment">/// - `error.MalformedRleBlock` if the block is an RLE block and `src.len < 1`</span></span>
<span class="line" id="L597"><span class="tok-comment">/// - `error.MalformedCompressedBlock` if there are errors decoding a</span></span>
<span class="line" id="L598"><span class="tok-comment">/// compressed block</span></span>
<span class="line" id="L599"><span class="tok-comment">/// - `error.DestTooSmall` is `dest` is not large enough to hold the</span></span>
<span class="line" id="L600"><span class="tok-comment">/// decompressed block</span></span>
<span class="line" id="L601"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeBlock</span>(</span>
<span class="line" id="L602"> dest: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L603"> src: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L604"> block_header: frame.Zstandard.Block.Header,</span>
<span class="line" id="L605"> decode_state: *DecodeState,</span>
<span class="line" id="L606"> consumed_count: *<span class="tok-type">usize</span>,</span>
<span class="line" id="L607"> block_size_max: <span class="tok-type">usize</span>,</span>
<span class="line" id="L608"> written_count: <span class="tok-type">usize</span>,</span>
<span class="line" id="L609">) (<span class="tok-kw">error</span>{DestTooSmall} || Error)!<span class="tok-type">usize</span> {</span>
<span class="line" id="L610"> <span class="tok-kw">const</span> block_size = block_header.block_size;</span>
<span class="line" id="L611"> <span class="tok-kw">if</span> (block_size_max < block_size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BlockSizeOverMaximum;</span>
<span class="line" id="L612"> <span class="tok-kw">switch</span> (block_header.block_type) {</span>
<span class="line" id="L613"> .raw => {</span>
<span class="line" id="L614"> <span class="tok-kw">if</span> (src.len < block_size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedBlockSize;</span>
<span class="line" id="L615"> <span class="tok-kw">if</span> (dest[written_count..].len < block_size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.DestTooSmall;</span>
<span class="line" id="L616"> <span class="tok-builtin">@memcpy</span>(dest[written_count..][<span class="tok-number">0</span>..block_size], src[<span class="tok-number">0</span>..block_size]);</span>
<span class="line" id="L617"> consumed_count.* += block_size;</span>
<span class="line" id="L618"> decode_state.written_count += block_size;</span>
<span class="line" id="L619"> <span class="tok-kw">return</span> block_size;</span>
<span class="line" id="L620"> },</span>
<span class="line" id="L621"> .rle => {</span>
<span class="line" id="L622"> <span class="tok-kw">if</span> (src.len < <span class="tok-number">1</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedRleBlock;</span>
<span class="line" id="L623"> <span class="tok-kw">if</span> (dest[written_count..].len < block_size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.DestTooSmall;</span>
<span class="line" id="L624"> <span class="tok-kw">for</span> (written_count..block_size + written_count) |write_pos| {</span>
<span class="line" id="L625"> dest[write_pos] = src[<span class="tok-number">0</span>];</span>
<span class="line" id="L626"> }</span>
<span class="line" id="L627"> consumed_count.* += <span class="tok-number">1</span>;</span>
<span class="line" id="L628"> decode_state.written_count += block_size;</span>
<span class="line" id="L629"> <span class="tok-kw">return</span> block_size;</span>
<span class="line" id="L630"> },</span>
<span class="line" id="L631"> .compressed => {</span>
<span class="line" id="L632"> <span class="tok-kw">if</span> (src.len < block_size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedBlockSize;</span>
<span class="line" id="L633"> <span class="tok-kw">var</span> bytes_read: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L634"> <span class="tok-kw">const</span> literals = decodeLiteralsSectionSlice(src[<span class="tok-number">0</span>..block_size], &bytes_read) <span class="tok-kw">catch</span></span>
<span class="line" id="L635"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L636"> <span class="tok-kw">var</span> fbs = std.io.fixedBufferStream(src[bytes_read..block_size]);</span>
<span class="line" id="L637"> <span class="tok-kw">const</span> fbs_reader = fbs.reader();</span>
<span class="line" id="L638"> <span class="tok-kw">const</span> sequences_header = decodeSequencesHeader(fbs_reader) <span class="tok-kw">catch</span></span>
<span class="line" id="L639"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L640"></span>
<span class="line" id="L641"> decode_state.prepare(fbs_reader, literals, sequences_header) <span class="tok-kw">catch</span></span>
<span class="line" id="L642"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L643"></span>
<span class="line" id="L644"> bytes_read += fbs.pos;</span>
<span class="line" id="L645"></span>
<span class="line" id="L646"> <span class="tok-kw">var</span> bytes_written: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L647"> {</span>
<span class="line" id="L648"> <span class="tok-kw">const</span> bit_stream_bytes = src[bytes_read..block_size];</span>
<span class="line" id="L649"> <span class="tok-kw">var</span> bit_stream: readers.ReverseBitReader = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L650"> bit_stream.init(bit_stream_bytes) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L651"></span>
<span class="line" id="L652"> <span class="tok-kw">if</span> (sequences_header.sequence_count > <span class="tok-number">0</span>) {</span>
<span class="line" id="L653"> decode_state.readInitialFseState(&bit_stream) <span class="tok-kw">catch</span></span>
<span class="line" id="L654"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L655"></span>
<span class="line" id="L656"> <span class="tok-kw">var</span> sequence_size_limit = block_size_max;</span>
<span class="line" id="L657"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..sequences_header.sequence_count) |i| {</span>
<span class="line" id="L658"> <span class="tok-kw">const</span> write_pos = written_count + bytes_written;</span>
<span class="line" id="L659"> <span class="tok-kw">const</span> decompressed_size = decode_state.decodeSequenceSlice(</span>
<span class="line" id="L660"> dest,</span>
<span class="line" id="L661"> write_pos,</span>
<span class="line" id="L662"> &bit_stream,</span>
<span class="line" id="L663"> sequence_size_limit,</span>
<span class="line" id="L664"> i == sequences_header.sequence_count - <span class="tok-number">1</span>,</span>
<span class="line" id="L665"> ) <span class="tok-kw">catch</span> |err| <span class="tok-kw">switch</span> (err) {</span>
<span class="line" id="L666"> <span class="tok-kw">error</span>.DestTooSmall => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.DestTooSmall,</span>
<span class="line" id="L667"> <span class="tok-kw">else</span> => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock,</span>
<span class="line" id="L668"> };</span>
<span class="line" id="L669"> bytes_written += decompressed_size;</span>
<span class="line" id="L670"> sequence_size_limit -= decompressed_size;</span>
<span class="line" id="L671"> }</span>
<span class="line" id="L672"> }</span>
<span class="line" id="L673"></span>
<span class="line" id="L674"> <span class="tok-kw">if</span> (!bit_stream.isEmpty()) {</span>
<span class="line" id="L675"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L676"> }</span>
<span class="line" id="L677"> }</span>
<span class="line" id="L678"></span>
<span class="line" id="L679"> <span class="tok-kw">if</span> (decode_state.literal_written_count < literals.header.regenerated_size) {</span>
<span class="line" id="L680"> <span class="tok-kw">const</span> len = literals.header.regenerated_size - decode_state.literal_written_count;</span>
<span class="line" id="L681"> <span class="tok-kw">if</span> (len > dest[written_count + bytes_written ..].len) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.DestTooSmall;</span>
<span class="line" id="L682"> decode_state.decodeLiteralsSlice(dest[written_count + bytes_written ..], len) <span class="tok-kw">catch</span></span>
<span class="line" id="L683"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L684"> bytes_written += len;</span>
<span class="line" id="L685"> }</span>
<span class="line" id="L686"></span>
<span class="line" id="L687"> <span class="tok-kw">switch</span> (decode_state.literal_header.block_type) {</span>
<span class="line" id="L688"> .treeless, .compressed => {</span>
<span class="line" id="L689"> <span class="tok-kw">if</span> (!decode_state.isLiteralStreamEmpty()) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L690"> },</span>
<span class="line" id="L691"> .raw, .rle => {},</span>
<span class="line" id="L692"> }</span>
<span class="line" id="L693"></span>
<span class="line" id="L694"> consumed_count.* += block_size;</span>
<span class="line" id="L695"> <span class="tok-kw">return</span> bytes_written;</span>
<span class="line" id="L696"> },</span>
<span class="line" id="L697"> .reserved => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ReservedBlock,</span>
<span class="line" id="L698"> }</span>
<span class="line" id="L699">}</span>
<span class="line" id="L700"></span>
<span class="line" id="L701"><span class="tok-comment">/// Decode a single block from `src` into `dest`; see `decodeBlock()`. Returns</span></span>
<span class="line" id="L702"><span class="tok-comment">/// the size of the decompressed block, which can be used with `dest.sliceLast()`</span></span>
<span class="line" id="L703"><span class="tok-comment">/// to get the decompressed bytes. `error.BlockSizeOverMaximum` is returned if</span></span>
<span class="line" id="L704"><span class="tok-comment">/// the block's compressed or decompressed size is larger than `block_size_max`.</span></span>
<span class="line" id="L705"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeBlockRingBuffer</span>(</span>
<span class="line" id="L706"> dest: *RingBuffer,</span>
<span class="line" id="L707"> src: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L708"> block_header: frame.Zstandard.Block.Header,</span>
<span class="line" id="L709"> decode_state: *DecodeState,</span>
<span class="line" id="L710"> consumed_count: *<span class="tok-type">usize</span>,</span>
<span class="line" id="L711"> block_size_max: <span class="tok-type">usize</span>,</span>
<span class="line" id="L712">) Error!<span class="tok-type">usize</span> {</span>
<span class="line" id="L713"> <span class="tok-kw">const</span> block_size = block_header.block_size;</span>
<span class="line" id="L714"> <span class="tok-kw">if</span> (block_size_max < block_size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BlockSizeOverMaximum;</span>
<span class="line" id="L715"> <span class="tok-kw">switch</span> (block_header.block_type) {</span>
<span class="line" id="L716"> .raw => {</span>
<span class="line" id="L717"> <span class="tok-kw">if</span> (src.len < block_size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedBlockSize;</span>
<span class="line" id="L718"> <span class="tok-kw">const</span> data = src[<span class="tok-number">0</span>..block_size];</span>
<span class="line" id="L719"> dest.writeSliceAssumeCapacity(data);</span>
<span class="line" id="L720"> consumed_count.* += block_size;</span>
<span class="line" id="L721"> decode_state.written_count += block_size;</span>
<span class="line" id="L722"> <span class="tok-kw">return</span> block_size;</span>
<span class="line" id="L723"> },</span>
<span class="line" id="L724"> .rle => {</span>
<span class="line" id="L725"> <span class="tok-kw">if</span> (src.len < <span class="tok-number">1</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedRleBlock;</span>
<span class="line" id="L726"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..block_size) |_| {</span>
<span class="line" id="L727"> dest.writeAssumeCapacity(src[<span class="tok-number">0</span>]);</span>
<span class="line" id="L728"> }</span>
<span class="line" id="L729"> consumed_count.* += <span class="tok-number">1</span>;</span>
<span class="line" id="L730"> decode_state.written_count += block_size;</span>
<span class="line" id="L731"> <span class="tok-kw">return</span> block_size;</span>
<span class="line" id="L732"> },</span>
<span class="line" id="L733"> .compressed => {</span>
<span class="line" id="L734"> <span class="tok-kw">if</span> (src.len < block_size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedBlockSize;</span>
<span class="line" id="L735"> <span class="tok-kw">var</span> bytes_read: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L736"> <span class="tok-kw">const</span> literals = decodeLiteralsSectionSlice(src[<span class="tok-number">0</span>..block_size], &bytes_read) <span class="tok-kw">catch</span></span>
<span class="line" id="L737"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L738"> <span class="tok-kw">var</span> fbs = std.io.fixedBufferStream(src[bytes_read..block_size]);</span>
<span class="line" id="L739"> <span class="tok-kw">const</span> fbs_reader = fbs.reader();</span>
<span class="line" id="L740"> <span class="tok-kw">const</span> sequences_header = decodeSequencesHeader(fbs_reader) <span class="tok-kw">catch</span></span>
<span class="line" id="L741"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L742"></span>
<span class="line" id="L743"> decode_state.prepare(fbs_reader, literals, sequences_header) <span class="tok-kw">catch</span></span>
<span class="line" id="L744"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L745"></span>
<span class="line" id="L746"> bytes_read += fbs.pos;</span>
<span class="line" id="L747"></span>
<span class="line" id="L748"> <span class="tok-kw">var</span> bytes_written: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L749"> {</span>
<span class="line" id="L750"> <span class="tok-kw">const</span> bit_stream_bytes = src[bytes_read..block_size];</span>
<span class="line" id="L751"> <span class="tok-kw">var</span> bit_stream: readers.ReverseBitReader = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L752"> bit_stream.init(bit_stream_bytes) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L753"></span>
<span class="line" id="L754"> <span class="tok-kw">if</span> (sequences_header.sequence_count > <span class="tok-number">0</span>) {</span>
<span class="line" id="L755"> decode_state.readInitialFseState(&bit_stream) <span class="tok-kw">catch</span></span>
<span class="line" id="L756"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L757"></span>
<span class="line" id="L758"> <span class="tok-kw">var</span> sequence_size_limit = block_size_max;</span>
<span class="line" id="L759"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..sequences_header.sequence_count) |i| {</span>
<span class="line" id="L760"> <span class="tok-kw">const</span> decompressed_size = decode_state.decodeSequenceRingBuffer(</span>
<span class="line" id="L761"> dest,</span>
<span class="line" id="L762"> &bit_stream,</span>
<span class="line" id="L763"> sequence_size_limit,</span>
<span class="line" id="L764"> i == sequences_header.sequence_count - <span class="tok-number">1</span>,</span>
<span class="line" id="L765"> ) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L766"> bytes_written += decompressed_size;</span>
<span class="line" id="L767"> sequence_size_limit -= decompressed_size;</span>
<span class="line" id="L768"> }</span>
<span class="line" id="L769"> }</span>
<span class="line" id="L770"></span>
<span class="line" id="L771"> <span class="tok-kw">if</span> (!bit_stream.isEmpty()) {</span>
<span class="line" id="L772"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L773"> }</span>
<span class="line" id="L774"> }</span>
<span class="line" id="L775"></span>
<span class="line" id="L776"> <span class="tok-kw">if</span> (decode_state.literal_written_count < literals.header.regenerated_size) {</span>
<span class="line" id="L777"> <span class="tok-kw">const</span> len = literals.header.regenerated_size - decode_state.literal_written_count;</span>
<span class="line" id="L778"> decode_state.decodeLiteralsRingBuffer(dest, len) <span class="tok-kw">catch</span></span>
<span class="line" id="L779"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L780"> bytes_written += len;</span>
<span class="line" id="L781"> }</span>
<span class="line" id="L782"></span>
<span class="line" id="L783"> <span class="tok-kw">switch</span> (decode_state.literal_header.block_type) {</span>
<span class="line" id="L784"> .treeless, .compressed => {</span>
<span class="line" id="L785"> <span class="tok-kw">if</span> (!decode_state.isLiteralStreamEmpty()) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L786"> },</span>
<span class="line" id="L787"> .raw, .rle => {},</span>
<span class="line" id="L788"> }</span>
<span class="line" id="L789"></span>
<span class="line" id="L790"> consumed_count.* += block_size;</span>
<span class="line" id="L791"> <span class="tok-kw">if</span> (bytes_written > block_size_max) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BlockSizeOverMaximum;</span>
<span class="line" id="L792"> <span class="tok-kw">return</span> bytes_written;</span>
<span class="line" id="L793"> },</span>
<span class="line" id="L794"> .reserved => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ReservedBlock,</span>
<span class="line" id="L795"> }</span>
<span class="line" id="L796">}</span>
<span class="line" id="L797"></span>
<span class="line" id="L798"><span class="tok-comment">/// Decode a single block from `source` into `dest`. Literal and sequence data</span></span>
<span class="line" id="L799"><span class="tok-comment">/// from the block is copied into `literals_buffer` and `sequence_buffer`, which</span></span>
<span class="line" id="L800"><span class="tok-comment">/// must be large enough or `error.LiteralsBufferTooSmall` and</span></span>
<span class="line" id="L801"><span class="tok-comment">/// `error.SequenceBufferTooSmall` are returned (the maximum block size is an</span></span>
<span class="line" id="L802"><span class="tok-comment">/// upper bound for the size of both buffers). See `decodeBlock`</span></span>
<span class="line" id="L803"><span class="tok-comment">/// and `decodeBlockRingBuffer` for function that can decode a block without</span></span>
<span class="line" id="L804"><span class="tok-comment">/// these extra copies. `error.EndOfStream` is returned if `source` does not</span></span>
<span class="line" id="L805"><span class="tok-comment">/// contain enough bytes.</span></span>
<span class="line" id="L806"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeBlockReader</span>(</span>
<span class="line" id="L807"> dest: *RingBuffer,</span>
<span class="line" id="L808"> source: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L809"> block_header: frame.Zstandard.Block.Header,</span>
<span class="line" id="L810"> decode_state: *DecodeState,</span>
<span class="line" id="L811"> block_size_max: <span class="tok-type">usize</span>,</span>
<span class="line" id="L812"> literals_buffer: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L813"> sequence_buffer: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L814">) !<span class="tok-type">void</span> {</span>
<span class="line" id="L815"> <span class="tok-kw">const</span> block_size = block_header.block_size;</span>
<span class="line" id="L816"> <span class="tok-kw">var</span> block_reader_limited = std.io.limitedReader(source, block_size);</span>
<span class="line" id="L817"> <span class="tok-kw">const</span> block_reader = block_reader_limited.reader();</span>
<span class="line" id="L818"> <span class="tok-kw">if</span> (block_size_max < block_size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BlockSizeOverMaximum;</span>
<span class="line" id="L819"> <span class="tok-kw">switch</span> (block_header.block_type) {</span>
<span class="line" id="L820"> .raw => {</span>
<span class="line" id="L821"> <span class="tok-kw">if</span> (block_size == <span class="tok-number">0</span>) <span class="tok-kw">return</span>;</span>
<span class="line" id="L822"> <span class="tok-kw">const</span> slice = dest.sliceAt(dest.write_index, block_size);</span>
<span class="line" id="L823"> <span class="tok-kw">try</span> source.readNoEof(slice.first);</span>
<span class="line" id="L824"> <span class="tok-kw">try</span> source.readNoEof(slice.second);</span>
<span class="line" id="L825"> dest.write_index = dest.mask2(dest.write_index + block_size);</span>
<span class="line" id="L826"> decode_state.written_count += block_size;</span>
<span class="line" id="L827"> },</span>
<span class="line" id="L828"> .rle => {</span>
<span class="line" id="L829"> <span class="tok-kw">const</span> byte = <span class="tok-kw">try</span> source.readByte();</span>
<span class="line" id="L830"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..block_size) |_| {</span>
<span class="line" id="L831"> dest.writeAssumeCapacity(byte);</span>
<span class="line" id="L832"> }</span>
<span class="line" id="L833"> decode_state.written_count += block_size;</span>
<span class="line" id="L834"> },</span>
<span class="line" id="L835"> .compressed => {</span>
<span class="line" id="L836"> <span class="tok-kw">const</span> literals = <span class="tok-kw">try</span> decodeLiteralsSection(block_reader, literals_buffer);</span>
<span class="line" id="L837"> <span class="tok-kw">const</span> sequences_header = <span class="tok-kw">try</span> decodeSequencesHeader(block_reader);</span>
<span class="line" id="L838"></span>
<span class="line" id="L839"> <span class="tok-kw">try</span> decode_state.prepare(block_reader, literals, sequences_header);</span>
<span class="line" id="L840"></span>
<span class="line" id="L841"> <span class="tok-kw">var</span> bytes_written: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L842"> {</span>
<span class="line" id="L843"> <span class="tok-kw">const</span> size = <span class="tok-kw">try</span> block_reader.readAll(sequence_buffer);</span>
<span class="line" id="L844"> <span class="tok-kw">var</span> bit_stream: readers.ReverseBitReader = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L845"> <span class="tok-kw">try</span> bit_stream.init(sequence_buffer[<span class="tok-number">0</span>..size]);</span>
<span class="line" id="L846"></span>
<span class="line" id="L847"> <span class="tok-kw">if</span> (sequences_header.sequence_count > <span class="tok-number">0</span>) {</span>
<span class="line" id="L848"> <span class="tok-kw">if</span> (sequence_buffer.len < block_reader_limited.bytes_left)</span>
<span class="line" id="L849"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.SequenceBufferTooSmall;</span>
<span class="line" id="L850"></span>
<span class="line" id="L851"> decode_state.readInitialFseState(&bit_stream) <span class="tok-kw">catch</span></span>
<span class="line" id="L852"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L853"></span>
<span class="line" id="L854"> <span class="tok-kw">var</span> sequence_size_limit = block_size_max;</span>
<span class="line" id="L855"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..sequences_header.sequence_count) |i| {</span>
<span class="line" id="L856"> <span class="tok-kw">const</span> decompressed_size = decode_state.decodeSequenceRingBuffer(</span>
<span class="line" id="L857"> dest,</span>
<span class="line" id="L858"> &bit_stream,</span>
<span class="line" id="L859"> sequence_size_limit,</span>
<span class="line" id="L860"> i == sequences_header.sequence_count - <span class="tok-number">1</span>,</span>
<span class="line" id="L861"> ) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L862"> sequence_size_limit -= decompressed_size;</span>
<span class="line" id="L863"> bytes_written += decompressed_size;</span>
<span class="line" id="L864"> }</span>
<span class="line" id="L865"> }</span>
<span class="line" id="L866"></span>
<span class="line" id="L867"> <span class="tok-kw">if</span> (!bit_stream.isEmpty()) {</span>
<span class="line" id="L868"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L869"> }</span>
<span class="line" id="L870"> }</span>
<span class="line" id="L871"></span>
<span class="line" id="L872"> <span class="tok-kw">if</span> (decode_state.literal_written_count < literals.header.regenerated_size) {</span>
<span class="line" id="L873"> <span class="tok-kw">const</span> len = literals.header.regenerated_size - decode_state.literal_written_count;</span>
<span class="line" id="L874"> decode_state.decodeLiteralsRingBuffer(dest, len) <span class="tok-kw">catch</span></span>
<span class="line" id="L875"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L876"> bytes_written += len;</span>
<span class="line" id="L877"> }</span>
<span class="line" id="L878"></span>
<span class="line" id="L879"> <span class="tok-kw">switch</span> (decode_state.literal_header.block_type) {</span>
<span class="line" id="L880"> .treeless, .compressed => {</span>
<span class="line" id="L881"> <span class="tok-kw">if</span> (!decode_state.isLiteralStreamEmpty()) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L882"> },</span>
<span class="line" id="L883"> .raw, .rle => {},</span>
<span class="line" id="L884"> }</span>
<span class="line" id="L885"></span>
<span class="line" id="L886"> <span class="tok-kw">if</span> (bytes_written > block_size_max) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.BlockSizeOverMaximum;</span>
<span class="line" id="L887"> <span class="tok-kw">if</span> (block_reader_limited.bytes_left != <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedCompressedBlock;</span>
<span class="line" id="L888"> decode_state.literal_written_count = <span class="tok-number">0</span>;</span>
<span class="line" id="L889"> },</span>
<span class="line" id="L890"> .reserved => <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ReservedBlock,</span>
<span class="line" id="L891"> }</span>
<span class="line" id="L892">}</span>
<span class="line" id="L893"></span>
<span class="line" id="L894"><span class="tok-comment">/// Decode the header of a block.</span></span>
<span class="line" id="L895"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeBlockHeader</span>(src: *<span class="tok-kw">const</span> [<span class="tok-number">3</span>]<span class="tok-type">u8</span>) frame.Zstandard.Block.Header {</span>
<span class="line" id="L896"> <span class="tok-kw">const</span> last_block = src[<span class="tok-number">0</span>] & <span class="tok-number">1</span> == <span class="tok-number">1</span>;</span>
<span class="line" id="L897"> <span class="tok-kw">const</span> block_type = <span class="tok-builtin">@as</span>(frame.Zstandard.Block.Type, <span class="tok-builtin">@enumFromInt</span>((src[<span class="tok-number">0</span>] & <span class="tok-number">0b110</span>) >> <span class="tok-number">1</span>));</span>
<span class="line" id="L898"> <span class="tok-kw">const</span> block_size = ((src[<span class="tok-number">0</span>] & <span class="tok-number">0b11111000</span>) >> <span class="tok-number">3</span>) + (<span class="tok-builtin">@as</span>(<span class="tok-type">u21</span>, src[<span class="tok-number">1</span>]) << <span class="tok-number">5</span>) + (<span class="tok-builtin">@as</span>(<span class="tok-type">u21</span>, src[<span class="tok-number">2</span>]) << <span class="tok-number">13</span>);</span>
<span class="line" id="L899"> <span class="tok-kw">return</span> .{</span>
<span class="line" id="L900"> .last_block = last_block,</span>
<span class="line" id="L901"> .block_type = block_type,</span>
<span class="line" id="L902"> .block_size = block_size,</span>
<span class="line" id="L903"> };</span>
<span class="line" id="L904">}</span>
<span class="line" id="L905"></span>
<span class="line" id="L906"><span class="tok-comment">/// Decode the header of a block.</span></span>
<span class="line" id="L907"><span class="tok-comment">///</span></span>
<span class="line" id="L908"><span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L909"><span class="tok-comment">/// - `error.EndOfStream` if `src.len < 3`</span></span>
<span class="line" id="L910"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeBlockHeaderSlice</span>(src: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) <span class="tok-kw">error</span>{EndOfStream}!frame.Zstandard.Block.Header {</span>
<span class="line" id="L911"> <span class="tok-kw">if</span> (src.len < <span class="tok-number">3</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.EndOfStream;</span>
<span class="line" id="L912"> <span class="tok-kw">return</span> decodeBlockHeader(src[<span class="tok-number">0</span>..<span class="tok-number">3</span>]);</span>
<span class="line" id="L913">}</span>
<span class="line" id="L914"></span>
<span class="line" id="L915"><span class="tok-comment">/// Decode a `LiteralsSection` from `src`, incrementing `consumed_count` by the</span></span>
<span class="line" id="L916"><span class="tok-comment">/// number of bytes the section uses.</span></span>
<span class="line" id="L917"><span class="tok-comment">///</span></span>
<span class="line" id="L918"><span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L919"><span class="tok-comment">/// - `error.MalformedLiteralsHeader` if the header is invalid</span></span>
<span class="line" id="L920"><span class="tok-comment">/// - `error.MalformedLiteralsSection` if there are decoding errors</span></span>
<span class="line" id="L921"><span class="tok-comment">/// - `error.MalformedAccuracyLog` if compressed literals have invalid</span></span>
<span class="line" id="L922"><span class="tok-comment">/// accuracy</span></span>
<span class="line" id="L923"><span class="tok-comment">/// - `error.MalformedFseTable` if compressed literals have invalid FSE table</span></span>
<span class="line" id="L924"><span class="tok-comment">/// - `error.MalformedHuffmanTree` if there are errors decoding a Huffamn tree</span></span>
<span class="line" id="L925"><span class="tok-comment">/// - `error.EndOfStream` if there are not enough bytes in `src`</span></span>
<span class="line" id="L926"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeLiteralsSectionSlice</span>(</span>
<span class="line" id="L927"> src: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>,</span>
<span class="line" id="L928"> consumed_count: *<span class="tok-type">usize</span>,</span>
<span class="line" id="L929">) (<span class="tok-kw">error</span>{ MalformedLiteralsHeader, MalformedLiteralsSection, EndOfStream } || huffman.Error)!LiteralsSection {</span>
<span class="line" id="L930"> <span class="tok-kw">var</span> bytes_read: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L931"> <span class="tok-kw">const</span> header = header: {</span>
<span class="line" id="L932"> <span class="tok-kw">var</span> fbs = std.io.fixedBufferStream(src);</span>
<span class="line" id="L933"> <span class="tok-kw">defer</span> bytes_read = fbs.pos;</span>
<span class="line" id="L934"> <span class="tok-kw">break</span> :header decodeLiteralsHeader(fbs.reader()) <span class="tok-kw">catch</span> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedLiteralsHeader;</span>
<span class="line" id="L935"> };</span>
<span class="line" id="L936"> <span class="tok-kw">switch</span> (header.block_type) {</span>
<span class="line" id="L937"> .raw => {</span>
<span class="line" id="L938"> <span class="tok-kw">if</span> (src.len < bytes_read + header.regenerated_size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedLiteralsSection;</span>
<span class="line" id="L939"> <span class="tok-kw">const</span> stream = src[bytes_read .. bytes_read + header.regenerated_size];</span>
<span class="line" id="L940"> consumed_count.* += header.regenerated_size + bytes_read;</span>
<span class="line" id="L941"> <span class="tok-kw">return</span> LiteralsSection{</span>
<span class="line" id="L942"> .header = header,</span>
<span class="line" id="L943"> .huffman_tree = <span class="tok-null">null</span>,</span>
<span class="line" id="L944"> .streams = .{ .one = stream },</span>
<span class="line" id="L945"> };</span>
<span class="line" id="L946"> },</span>
<span class="line" id="L947"> .rle => {</span>
<span class="line" id="L948"> <span class="tok-kw">if</span> (src.len < bytes_read + <span class="tok-number">1</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedLiteralsSection;</span>
<span class="line" id="L949"> <span class="tok-kw">const</span> stream = src[bytes_read .. bytes_read + <span class="tok-number">1</span>];</span>
<span class="line" id="L950"> consumed_count.* += <span class="tok-number">1</span> + bytes_read;</span>
<span class="line" id="L951"> <span class="tok-kw">return</span> LiteralsSection{</span>
<span class="line" id="L952"> .header = header,</span>
<span class="line" id="L953"> .huffman_tree = <span class="tok-null">null</span>,</span>
<span class="line" id="L954"> .streams = .{ .one = stream },</span>
<span class="line" id="L955"> };</span>
<span class="line" id="L956"> },</span>
<span class="line" id="L957"> .compressed, .treeless => {</span>
<span class="line" id="L958"> <span class="tok-kw">const</span> huffman_tree_start = bytes_read;</span>
<span class="line" id="L959"> <span class="tok-kw">const</span> huffman_tree = <span class="tok-kw">if</span> (header.block_type == .compressed)</span>
<span class="line" id="L960"> <span class="tok-kw">try</span> huffman.decodeHuffmanTreeSlice(src[bytes_read..], &bytes_read)</span>
<span class="line" id="L961"> <span class="tok-kw">else</span></span>
<span class="line" id="L962"> <span class="tok-null">null</span>;</span>
<span class="line" id="L963"> <span class="tok-kw">const</span> huffman_tree_size = bytes_read - huffman_tree_start;</span>
<span class="line" id="L964"> <span class="tok-kw">const</span> total_streams_size = std.math.sub(<span class="tok-type">usize</span>, header.compressed_size.?, huffman_tree_size) <span class="tok-kw">catch</span></span>
<span class="line" id="L965"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedLiteralsSection;</span>
<span class="line" id="L966"></span>
<span class="line" id="L967"> <span class="tok-kw">if</span> (src.len < bytes_read + total_streams_size) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedLiteralsSection;</span>
<span class="line" id="L968"> <span class="tok-kw">const</span> stream_data = src[bytes_read .. bytes_read + total_streams_size];</span>
<span class="line" id="L969"></span>
<span class="line" id="L970"> <span class="tok-kw">const</span> streams = <span class="tok-kw">try</span> decodeStreams(header.size_format, stream_data);</span>
<span class="line" id="L971"> consumed_count.* += bytes_read + total_streams_size;</span>
<span class="line" id="L972"> <span class="tok-kw">return</span> LiteralsSection{</span>
<span class="line" id="L973"> .header = header,</span>
<span class="line" id="L974"> .huffman_tree = huffman_tree,</span>
<span class="line" id="L975"> .streams = streams,</span>
<span class="line" id="L976"> };</span>
<span class="line" id="L977"> },</span>
<span class="line" id="L978"> }</span>
<span class="line" id="L979">}</span>
<span class="line" id="L980"></span>
<span class="line" id="L981"><span class="tok-comment">/// Decode a `LiteralsSection` from `src`, incrementing `consumed_count` by the</span></span>
<span class="line" id="L982"><span class="tok-comment">/// number of bytes the section uses. See `decodeLiterasSectionSlice()`.</span></span>
<span class="line" id="L983"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeLiteralsSection</span>(</span>
<span class="line" id="L984"> source: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L985"> buffer: []<span class="tok-type">u8</span>,</span>
<span class="line" id="L986">) !LiteralsSection {</span>
<span class="line" id="L987"> <span class="tok-kw">const</span> header = <span class="tok-kw">try</span> decodeLiteralsHeader(source);</span>
<span class="line" id="L988"> <span class="tok-kw">switch</span> (header.block_type) {</span>
<span class="line" id="L989"> .raw => {</span>
<span class="line" id="L990"> <span class="tok-kw">try</span> source.readNoEof(buffer[<span class="tok-number">0</span>..header.regenerated_size]);</span>
<span class="line" id="L991"> <span class="tok-kw">return</span> LiteralsSection{</span>
<span class="line" id="L992"> .header = header,</span>
<span class="line" id="L993"> .huffman_tree = <span class="tok-null">null</span>,</span>
<span class="line" id="L994"> .streams = .{ .one = buffer },</span>
<span class="line" id="L995"> };</span>
<span class="line" id="L996"> },</span>
<span class="line" id="L997"> .rle => {</span>
<span class="line" id="L998"> buffer[<span class="tok-number">0</span>] = <span class="tok-kw">try</span> source.readByte();</span>
<span class="line" id="L999"> <span class="tok-kw">return</span> LiteralsSection{</span>
<span class="line" id="L1000"> .header = header,</span>
<span class="line" id="L1001"> .huffman_tree = <span class="tok-null">null</span>,</span>
<span class="line" id="L1002"> .streams = .{ .one = buffer[<span class="tok-number">0</span>..<span class="tok-number">1</span>] },</span>
<span class="line" id="L1003"> };</span>
<span class="line" id="L1004"> },</span>
<span class="line" id="L1005"> .compressed, .treeless => {</span>
<span class="line" id="L1006"> <span class="tok-kw">var</span> counting_reader = std.io.countingReader(source);</span>
<span class="line" id="L1007"> <span class="tok-kw">const</span> huffman_tree = <span class="tok-kw">if</span> (header.block_type == .compressed)</span>
<span class="line" id="L1008"> <span class="tok-kw">try</span> huffman.decodeHuffmanTree(counting_reader.reader(), buffer)</span>
<span class="line" id="L1009"> <span class="tok-kw">else</span></span>
<span class="line" id="L1010"> <span class="tok-null">null</span>;</span>
<span class="line" id="L1011"> <span class="tok-kw">const</span> huffman_tree_size = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, <span class="tok-builtin">@intCast</span>(counting_reader.bytes_read));</span>
<span class="line" id="L1012"> <span class="tok-kw">const</span> total_streams_size = std.math.sub(<span class="tok-type">usize</span>, header.compressed_size.?, huffman_tree_size) <span class="tok-kw">catch</span></span>
<span class="line" id="L1013"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedLiteralsSection;</span>
<span class="line" id="L1014"></span>
<span class="line" id="L1015"> <span class="tok-kw">if</span> (total_streams_size > buffer.len) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.LiteralsBufferTooSmall;</span>
<span class="line" id="L1016"> <span class="tok-kw">try</span> source.readNoEof(buffer[<span class="tok-number">0</span>..total_streams_size]);</span>
<span class="line" id="L1017"> <span class="tok-kw">const</span> stream_data = buffer[<span class="tok-number">0</span>..total_streams_size];</span>
<span class="line" id="L1018"></span>
<span class="line" id="L1019"> <span class="tok-kw">const</span> streams = <span class="tok-kw">try</span> decodeStreams(header.size_format, stream_data);</span>
<span class="line" id="L1020"> <span class="tok-kw">return</span> LiteralsSection{</span>
<span class="line" id="L1021"> .header = header,</span>
<span class="line" id="L1022"> .huffman_tree = huffman_tree,</span>
<span class="line" id="L1023"> .streams = streams,</span>
<span class="line" id="L1024"> };</span>
<span class="line" id="L1025"> },</span>
<span class="line" id="L1026"> }</span>
<span class="line" id="L1027">}</span>
<span class="line" id="L1028"></span>
<span class="line" id="L1029"><span class="tok-kw">fn</span> <span class="tok-fn">decodeStreams</span>(size_format: <span class="tok-type">u2</span>, stream_data: []<span class="tok-kw">const</span> <span class="tok-type">u8</span>) !LiteralsSection.Streams {</span>
<span class="line" id="L1030"> <span class="tok-kw">if</span> (size_format == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1031"> <span class="tok-kw">return</span> .{ .one = stream_data };</span>
<span class="line" id="L1032"> }</span>
<span class="line" id="L1033"></span>
<span class="line" id="L1034"> <span class="tok-kw">if</span> (stream_data.len < <span class="tok-number">6</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedLiteralsSection;</span>
<span class="line" id="L1035"></span>
<span class="line" id="L1036"> <span class="tok-kw">const</span> stream_1_length = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, readInt(<span class="tok-type">u16</span>, stream_data[<span class="tok-number">0</span>..<span class="tok-number">2</span>]));</span>
<span class="line" id="L1037"> <span class="tok-kw">const</span> stream_2_length = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, readInt(<span class="tok-type">u16</span>, stream_data[<span class="tok-number">2</span>..<span class="tok-number">4</span>]));</span>
<span class="line" id="L1038"> <span class="tok-kw">const</span> stream_3_length = <span class="tok-builtin">@as</span>(<span class="tok-type">usize</span>, readInt(<span class="tok-type">u16</span>, stream_data[<span class="tok-number">4</span>..<span class="tok-number">6</span>]));</span>
<span class="line" id="L1039"></span>
<span class="line" id="L1040"> <span class="tok-kw">const</span> stream_1_start = <span class="tok-number">6</span>;</span>
<span class="line" id="L1041"> <span class="tok-kw">const</span> stream_2_start = stream_1_start + stream_1_length;</span>
<span class="line" id="L1042"> <span class="tok-kw">const</span> stream_3_start = stream_2_start + stream_2_length;</span>
<span class="line" id="L1043"> <span class="tok-kw">const</span> stream_4_start = stream_3_start + stream_3_length;</span>
<span class="line" id="L1044"></span>
<span class="line" id="L1045"> <span class="tok-kw">if</span> (stream_data.len < stream_4_start) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedLiteralsSection;</span>
<span class="line" id="L1046"></span>
<span class="line" id="L1047"> <span class="tok-kw">return</span> .{ .four = .{</span>
<span class="line" id="L1048"> stream_data[stream_1_start .. stream_1_start + stream_1_length],</span>
<span class="line" id="L1049"> stream_data[stream_2_start .. stream_2_start + stream_2_length],</span>
<span class="line" id="L1050"> stream_data[stream_3_start .. stream_3_start + stream_3_length],</span>
<span class="line" id="L1051"> stream_data[stream_4_start..],</span>
<span class="line" id="L1052"> } };</span>
<span class="line" id="L1053">}</span>
<span class="line" id="L1054"></span>
<span class="line" id="L1055"><span class="tok-comment">/// Decode a literals section header.</span></span>
<span class="line" id="L1056"><span class="tok-comment">///</span></span>
<span class="line" id="L1057"><span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L1058"><span class="tok-comment">/// - `error.EndOfStream` if there are not enough bytes in `source`</span></span>
<span class="line" id="L1059"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeLiteralsHeader</span>(source: <span class="tok-kw">anytype</span>) !LiteralsSection.Header {</span>
<span class="line" id="L1060"> <span class="tok-kw">const</span> byte0 = <span class="tok-kw">try</span> source.readByte();</span>
<span class="line" id="L1061"> <span class="tok-kw">const</span> block_type = <span class="tok-builtin">@as</span>(LiteralsSection.BlockType, <span class="tok-builtin">@enumFromInt</span>(byte0 & <span class="tok-number">0b11</span>));</span>
<span class="line" id="L1062"> <span class="tok-kw">const</span> size_format = <span class="tok-builtin">@as</span>(<span class="tok-type">u2</span>, <span class="tok-builtin">@intCast</span>((byte0 & <span class="tok-number">0b1100</span>) >> <span class="tok-number">2</span>));</span>
<span class="line" id="L1063"> <span class="tok-kw">var</span> regenerated_size: <span class="tok-type">u20</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L1064"> <span class="tok-kw">var</span> compressed_size: ?<span class="tok-type">u18</span> = <span class="tok-null">null</span>;</span>
<span class="line" id="L1065"> <span class="tok-kw">switch</span> (block_type) {</span>
<span class="line" id="L1066"> .raw, .rle => {</span>
<span class="line" id="L1067"> <span class="tok-kw">switch</span> (size_format) {</span>
<span class="line" id="L1068"> <span class="tok-number">0</span>, <span class="tok-number">2</span> => {</span>
<span class="line" id="L1069"> regenerated_size = byte0 >> <span class="tok-number">3</span>;</span>
<span class="line" id="L1070"> },</span>
<span class="line" id="L1071"> <span class="tok-number">1</span> => regenerated_size = (byte0 >> <span class="tok-number">4</span>) + (<span class="tok-builtin">@as</span>(<span class="tok-type">u20</span>, <span class="tok-kw">try</span> source.readByte()) << <span class="tok-number">4</span>),</span>
<span class="line" id="L1072"> <span class="tok-number">3</span> => regenerated_size = (byte0 >> <span class="tok-number">4</span>) +</span>
<span class="line" id="L1073"> (<span class="tok-builtin">@as</span>(<span class="tok-type">u20</span>, <span class="tok-kw">try</span> source.readByte()) << <span class="tok-number">4</span>) +</span>
<span class="line" id="L1074"> (<span class="tok-builtin">@as</span>(<span class="tok-type">u20</span>, <span class="tok-kw">try</span> source.readByte()) << <span class="tok-number">12</span>),</span>
<span class="line" id="L1075"> }</span>
<span class="line" id="L1076"> },</span>
<span class="line" id="L1077"> .compressed, .treeless => {</span>
<span class="line" id="L1078"> <span class="tok-kw">const</span> byte1 = <span class="tok-kw">try</span> source.readByte();</span>
<span class="line" id="L1079"> <span class="tok-kw">const</span> byte2 = <span class="tok-kw">try</span> source.readByte();</span>
<span class="line" id="L1080"> <span class="tok-kw">switch</span> (size_format) {</span>
<span class="line" id="L1081"> <span class="tok-number">0</span>, <span class="tok-number">1</span> => {</span>
<span class="line" id="L1082"> regenerated_size = (byte0 >> <span class="tok-number">4</span>) + ((<span class="tok-builtin">@as</span>(<span class="tok-type">u20</span>, byte1) & <span class="tok-number">0b00111111</span>) << <span class="tok-number">4</span>);</span>
<span class="line" id="L1083"> compressed_size = ((byte1 & <span class="tok-number">0b11000000</span>) >> <span class="tok-number">6</span>) + (<span class="tok-builtin">@as</span>(<span class="tok-type">u18</span>, byte2) << <span class="tok-number">2</span>);</span>
<span class="line" id="L1084"> },</span>
<span class="line" id="L1085"> <span class="tok-number">2</span> => {</span>
<span class="line" id="L1086"> <span class="tok-kw">const</span> byte3 = <span class="tok-kw">try</span> source.readByte();</span>
<span class="line" id="L1087"> regenerated_size = (byte0 >> <span class="tok-number">4</span>) + (<span class="tok-builtin">@as</span>(<span class="tok-type">u20</span>, byte1) << <span class="tok-number">4</span>) + ((<span class="tok-builtin">@as</span>(<span class="tok-type">u20</span>, byte2) & <span class="tok-number">0b00000011</span>) << <span class="tok-number">12</span>);</span>
<span class="line" id="L1088"> compressed_size = ((byte2 & <span class="tok-number">0b11111100</span>) >> <span class="tok-number">2</span>) + (<span class="tok-builtin">@as</span>(<span class="tok-type">u18</span>, byte3) << <span class="tok-number">6</span>);</span>
<span class="line" id="L1089"> },</span>
<span class="line" id="L1090"> <span class="tok-number">3</span> => {</span>
<span class="line" id="L1091"> <span class="tok-kw">const</span> byte3 = <span class="tok-kw">try</span> source.readByte();</span>
<span class="line" id="L1092"> <span class="tok-kw">const</span> byte4 = <span class="tok-kw">try</span> source.readByte();</span>
<span class="line" id="L1093"> regenerated_size = (byte0 >> <span class="tok-number">4</span>) + (<span class="tok-builtin">@as</span>(<span class="tok-type">u20</span>, byte1) << <span class="tok-number">4</span>) + ((<span class="tok-builtin">@as</span>(<span class="tok-type">u20</span>, byte2) & <span class="tok-number">0b00111111</span>) << <span class="tok-number">12</span>);</span>
<span class="line" id="L1094"> compressed_size = ((byte2 & <span class="tok-number">0b11000000</span>) >> <span class="tok-number">6</span>) + (<span class="tok-builtin">@as</span>(<span class="tok-type">u18</span>, byte3) << <span class="tok-number">2</span>) + (<span class="tok-builtin">@as</span>(<span class="tok-type">u18</span>, byte4) << <span class="tok-number">10</span>);</span>
<span class="line" id="L1095"> },</span>
<span class="line" id="L1096"> }</span>
<span class="line" id="L1097"> },</span>
<span class="line" id="L1098"> }</span>
<span class="line" id="L1099"> <span class="tok-kw">return</span> LiteralsSection.Header{</span>
<span class="line" id="L1100"> .block_type = block_type,</span>
<span class="line" id="L1101"> .size_format = size_format,</span>
<span class="line" id="L1102"> .regenerated_size = regenerated_size,</span>
<span class="line" id="L1103"> .compressed_size = compressed_size,</span>
<span class="line" id="L1104"> };</span>
<span class="line" id="L1105">}</span>
<span class="line" id="L1106"></span>
<span class="line" id="L1107"><span class="tok-comment">/// Decode a sequences section header.</span></span>
<span class="line" id="L1108"><span class="tok-comment">///</span></span>
<span class="line" id="L1109"><span class="tok-comment">/// Errors returned:</span></span>
<span class="line" id="L1110"><span class="tok-comment">/// - `error.ReservedBitSet` if the reserved bit is set</span></span>
<span class="line" id="L1111"><span class="tok-comment">/// - `error.EndOfStream` if there are not enough bytes in `source`</span></span>
<span class="line" id="L1112"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeSequencesHeader</span>(</span>
<span class="line" id="L1113"> source: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L1114">) !SequencesSection.Header {</span>
<span class="line" id="L1115"> <span class="tok-kw">var</span> sequence_count: <span class="tok-type">u24</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L1116"></span>
<span class="line" id="L1117"> <span class="tok-kw">const</span> byte0 = <span class="tok-kw">try</span> source.readByte();</span>
<span class="line" id="L1118"> <span class="tok-kw">if</span> (byte0 == <span class="tok-number">0</span>) {</span>
<span class="line" id="L1119"> <span class="tok-kw">return</span> SequencesSection.Header{</span>
<span class="line" id="L1120"> .sequence_count = <span class="tok-number">0</span>,</span>
<span class="line" id="L1121"> .offsets = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1122"> .match_lengths = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1123"> .literal_lengths = <span class="tok-null">undefined</span>,</span>
<span class="line" id="L1124"> };</span>
<span class="line" id="L1125"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (byte0 < <span class="tok-number">128</span>) {</span>
<span class="line" id="L1126"> sequence_count = byte0;</span>
<span class="line" id="L1127"> } <span class="tok-kw">else</span> <span class="tok-kw">if</span> (byte0 < <span class="tok-number">255</span>) {</span>
<span class="line" id="L1128"> sequence_count = (<span class="tok-builtin">@as</span>(<span class="tok-type">u24</span>, (byte0 - <span class="tok-number">128</span>)) << <span class="tok-number">8</span>) + <span class="tok-kw">try</span> source.readByte();</span>
<span class="line" id="L1129"> } <span class="tok-kw">else</span> {</span>
<span class="line" id="L1130"> sequence_count = (<span class="tok-kw">try</span> source.readByte()) + (<span class="tok-builtin">@as</span>(<span class="tok-type">u24</span>, <span class="tok-kw">try</span> source.readByte()) << <span class="tok-number">8</span>) + <span class="tok-number">0x7F00</span>;</span>
<span class="line" id="L1131"> }</span>
<span class="line" id="L1132"></span>
<span class="line" id="L1133"> <span class="tok-kw">const</span> compression_modes = <span class="tok-kw">try</span> source.readByte();</span>
<span class="line" id="L1134"></span>
<span class="line" id="L1135"> <span class="tok-kw">const</span> matches_mode = <span class="tok-builtin">@as</span>(SequencesSection.Header.Mode, <span class="tok-builtin">@enumFromInt</span>((compression_modes & <span class="tok-number">0b00001100</span>) >> <span class="tok-number">2</span>));</span>
<span class="line" id="L1136"> <span class="tok-kw">const</span> offsets_mode = <span class="tok-builtin">@as</span>(SequencesSection.Header.Mode, <span class="tok-builtin">@enumFromInt</span>((compression_modes & <span class="tok-number">0b00110000</span>) >> <span class="tok-number">4</span>));</span>
<span class="line" id="L1137"> <span class="tok-kw">const</span> literal_mode = <span class="tok-builtin">@as</span>(SequencesSection.Header.Mode, <span class="tok-builtin">@enumFromInt</span>((compression_modes & <span class="tok-number">0b11000000</span>) >> <span class="tok-number">6</span>));</span>
<span class="line" id="L1138"> <span class="tok-kw">if</span> (compression_modes & <span class="tok-number">0b11</span> != <span class="tok-number">0</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.ReservedBitSet;</span>
<span class="line" id="L1139"></span>
<span class="line" id="L1140"> <span class="tok-kw">return</span> SequencesSection.Header{</span>
<span class="line" id="L1141"> .sequence_count = sequence_count,</span>
<span class="line" id="L1142"> .offsets = offsets_mode,</span>
<span class="line" id="L1143"> .match_lengths = matches_mode,</span>
<span class="line" id="L1144"> .literal_lengths = literal_mode,</span>
<span class="line" id="L1145"> };</span>
<span class="line" id="L1146">}</span>
<span class="line" id="L1147"></span>
</code></pre></body>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"std"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> assert = std.debug.assert;</span>
<span class="line" id="L3"></span>
<span class="line" id="L4"><span class="tok-kw">const</span> types = <span class="tok-builtin">@import</span>(<span class="tok-str">"../types.zig"</span>);</span>
<span class="line" id="L5"><span class="tok-kw">const</span> Table = types.compressed_block.Table;</span>
<span class="line" id="L6"></span>
<span class="line" id="L7"><span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decodeFseTable</span>(</span>
<span class="line" id="L8"> bit_reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L9"> expected_symbol_count: <span class="tok-type">usize</span>,</span>
<span class="line" id="L10"> max_accuracy_log: <span class="tok-type">u4</span>,</span>
<span class="line" id="L11"> entries: []Table.Fse,</span>
<span class="line" id="L12">) !<span class="tok-type">usize</span> {</span>
<span class="line" id="L13"> <span class="tok-kw">const</span> accuracy_log_biased = <span class="tok-kw">try</span> bit_reader.readBitsNoEof(<span class="tok-type">u4</span>, <span class="tok-number">4</span>);</span>
<span class="line" id="L14"> <span class="tok-kw">if</span> (accuracy_log_biased > max_accuracy_log -| <span class="tok-number">5</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedAccuracyLog;</span>
<span class="line" id="L15"> <span class="tok-kw">const</span> accuracy_log = accuracy_log_biased + <span class="tok-number">5</span>;</span>
<span class="line" id="L16"></span>
<span class="line" id="L17"> <span class="tok-kw">var</span> values: [<span class="tok-number">256</span>]<span class="tok-type">u16</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L18"> <span class="tok-kw">var</span> value_count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L19"></span>
<span class="line" id="L20"> <span class="tok-kw">const</span> total_probability = <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-number">1</span>) << accuracy_log;</span>
<span class="line" id="L21"> <span class="tok-kw">var</span> accumulated_probability: <span class="tok-type">u16</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L22"></span>
<span class="line" id="L23"> <span class="tok-kw">while</span> (accumulated_probability < total_probability) {</span>
<span class="line" id="L24"> <span class="tok-comment">// WARNING: The RFC is poorly worded, and would suggest std.math.log2_int_ceil is correct here,</span>
</span>
<span class="line" id="L25"> <span class="tok-comment">// but power of two (remaining probabilities + 1) need max bits set to 1 more.</span>
</span>
<span class="line" id="L26"> <span class="tok-kw">const</span> max_bits = std.math.log2_int(<span class="tok-type">u16</span>, total_probability - accumulated_probability + <span class="tok-number">1</span>) + <span class="tok-number">1</span>;</span>
<span class="line" id="L27"> <span class="tok-kw">const</span> small = <span class="tok-kw">try</span> bit_reader.readBitsNoEof(<span class="tok-type">u16</span>, max_bits - <span class="tok-number">1</span>);</span>
<span class="line" id="L28"></span>
<span class="line" id="L29"> <span class="tok-kw">const</span> cutoff = (<span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-number">1</span>) << max_bits) - <span class="tok-number">1</span> - (total_probability - accumulated_probability + <span class="tok-number">1</span>);</span>
<span class="line" id="L30"></span>
<span class="line" id="L31"> <span class="tok-kw">const</span> value = <span class="tok-kw">if</span> (small < cutoff)</span>
<span class="line" id="L32"> small</span>
<span class="line" id="L33"> <span class="tok-kw">else</span> value: {</span>
<span class="line" id="L34"> <span class="tok-kw">const</span> value_read = small + (<span class="tok-kw">try</span> bit_reader.readBitsNoEof(<span class="tok-type">u16</span>, <span class="tok-number">1</span>) << (max_bits - <span class="tok-number">1</span>));</span>
<span class="line" id="L35"> <span class="tok-kw">break</span> :value <span class="tok-kw">if</span> (value_read < <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-number">1</span>) << (max_bits - <span class="tok-number">1</span>))</span>
<span class="line" id="L36"> value_read</span>
<span class="line" id="L37"> <span class="tok-kw">else</span></span>
<span class="line" id="L38"> value_read - cutoff;</span>
<span class="line" id="L39"> };</span>
<span class="line" id="L40"></span>
<span class="line" id="L41"> accumulated_probability += <span class="tok-kw">if</span> (value != <span class="tok-number">0</span>) value - <span class="tok-number">1</span> <span class="tok-kw">else</span> <span class="tok-number">1</span>;</span>
<span class="line" id="L42"></span>
<span class="line" id="L43"> values[value_count] = value;</span>
<span class="line" id="L44"> value_count += <span class="tok-number">1</span>;</span>
<span class="line" id="L45"></span>
<span class="line" id="L46"> <span class="tok-kw">if</span> (value == <span class="tok-number">1</span>) {</span>
<span class="line" id="L47"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L48"> <span class="tok-kw">const</span> repeat_flag = <span class="tok-kw">try</span> bit_reader.readBitsNoEof(<span class="tok-type">u2</span>, <span class="tok-number">2</span>);</span>
<span class="line" id="L49"> <span class="tok-kw">if</span> (repeat_flag + value_count > <span class="tok-number">256</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedFseTable;</span>
<span class="line" id="L50"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..repeat_flag) |_| {</span>
<span class="line" id="L51"> values[value_count] = <span class="tok-number">1</span>;</span>
<span class="line" id="L52"> value_count += <span class="tok-number">1</span>;</span>
<span class="line" id="L53"> }</span>
<span class="line" id="L54"> <span class="tok-kw">if</span> (repeat_flag < <span class="tok-number">3</span>) <span class="tok-kw">break</span>;</span>
<span class="line" id="L55"> }</span>
<span class="line" id="L56"> }</span>
<span class="line" id="L57"> <span class="tok-kw">if</span> (value_count == <span class="tok-number">256</span>) <span class="tok-kw">break</span>;</span>
<span class="line" id="L58"> }</span>
<span class="line" id="L59"> bit_reader.alignToByte();</span>
<span class="line" id="L60"></span>
<span class="line" id="L61"> <span class="tok-kw">if</span> (value_count < <span class="tok-number">2</span>) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedFseTable;</span>
<span class="line" id="L62"> <span class="tok-kw">if</span> (accumulated_probability != total_probability) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedFseTable;</span>
<span class="line" id="L63"> <span class="tok-kw">if</span> (value_count > expected_symbol_count) <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedFseTable;</span>
<span class="line" id="L64"></span>
<span class="line" id="L65"> <span class="tok-kw">const</span> table_size = total_probability;</span>
<span class="line" id="L66"></span>
<span class="line" id="L67"> <span class="tok-kw">try</span> buildFseTable(values[<span class="tok-number">0</span>..value_count], entries[<span class="tok-number">0</span>..table_size]);</span>
<span class="line" id="L68"> <span class="tok-kw">return</span> table_size;</span>
<span class="line" id="L69">}</span>
<span class="line" id="L70"></span>
<span class="line" id="L71"><span class="tok-kw">fn</span> <span class="tok-fn">buildFseTable</span>(values: []<span class="tok-kw">const</span> <span class="tok-type">u16</span>, entries: []Table.Fse) !<span class="tok-type">void</span> {</span>
<span class="line" id="L72"> <span class="tok-kw">const</span> total_probability = <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(entries.len));</span>
<span class="line" id="L73"> <span class="tok-kw">const</span> accuracy_log = std.math.log2_int(<span class="tok-type">u16</span>, total_probability);</span>
<span class="line" id="L74"> assert(total_probability <= <span class="tok-number">1</span> << <span class="tok-number">9</span>);</span>
<span class="line" id="L75"></span>
<span class="line" id="L76"> <span class="tok-kw">var</span> less_than_one_count: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L77"> <span class="tok-kw">for</span> (values, <span class="tok-number">0</span>..) |value, i| {</span>
<span class="line" id="L78"> <span class="tok-kw">if</span> (value == <span class="tok-number">0</span>) {</span>
<span class="line" id="L79"> entries[entries.len - <span class="tok-number">1</span> - less_than_one_count] = Table.Fse{</span>
<span class="line" id="L80"> .symbol = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(i)),</span>
<span class="line" id="L81"> .baseline = <span class="tok-number">0</span>,</span>
<span class="line" id="L82"> .bits = accuracy_log,</span>
<span class="line" id="L83"> };</span>
<span class="line" id="L84"> less_than_one_count += <span class="tok-number">1</span>;</span>
<span class="line" id="L85"> }</span>
<span class="line" id="L86"> }</span>
<span class="line" id="L87"></span>
<span class="line" id="L88"> <span class="tok-kw">var</span> position: <span class="tok-type">usize</span> = <span class="tok-number">0</span>;</span>
<span class="line" id="L89"> <span class="tok-kw">var</span> temp_states: [<span class="tok-number">1</span> << <span class="tok-number">9</span>]<span class="tok-type">u16</span> = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L90"> <span class="tok-kw">for</span> (values, <span class="tok-number">0</span>..) |value, symbol| {</span>
<span class="line" id="L91"> <span class="tok-kw">if</span> (value == <span class="tok-number">0</span> <span class="tok-kw">or</span> value == <span class="tok-number">1</span>) <span class="tok-kw">continue</span>;</span>
<span class="line" id="L92"> <span class="tok-kw">const</span> probability = value - <span class="tok-number">1</span>;</span>
<span class="line" id="L93"></span>
<span class="line" id="L94"> <span class="tok-kw">const</span> state_share_dividend = std.math.ceilPowerOfTwo(<span class="tok-type">u16</span>, probability) <span class="tok-kw">catch</span></span>
<span class="line" id="L95"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.MalformedFseTable;</span>
<span class="line" id="L96"> <span class="tok-kw">const</span> share_size = <span class="tok-builtin">@divExact</span>(total_probability, state_share_dividend);</span>
<span class="line" id="L97"> <span class="tok-kw">const</span> double_state_count = state_share_dividend - probability;</span>
<span class="line" id="L98"> <span class="tok-kw">const</span> single_state_count = probability - double_state_count;</span>
<span class="line" id="L99"> <span class="tok-kw">const</span> share_size_log = std.math.log2_int(<span class="tok-type">u16</span>, share_size);</span>
<span class="line" id="L100"></span>
<span class="line" id="L101"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..probability) |i| {</span>
<span class="line" id="L102"> temp_states[i] = <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(position));</span>
<span class="line" id="L103"> position += (entries.len >> <span class="tok-number">1</span>) + (entries.len >> <span class="tok-number">3</span>) + <span class="tok-number">3</span>;</span>
<span class="line" id="L104"> position &= entries.len - <span class="tok-number">1</span>;</span>
<span class="line" id="L105"> <span class="tok-kw">while</span> (position >= entries.len - less_than_one_count) {</span>
<span class="line" id="L106"> position += (entries.len >> <span class="tok-number">1</span>) + (entries.len >> <span class="tok-number">3</span>) + <span class="tok-number">3</span>;</span>
<span class="line" id="L107"> position &= entries.len - <span class="tok-number">1</span>;</span>
<span class="line" id="L108"> }</span>
<span class="line" id="L109"> }</span>
<span class="line" id="L110"> std.mem.sort(<span class="tok-type">u16</span>, temp_states[<span class="tok-number">0</span>..probability], {}, std.sort.asc(<span class="tok-type">u16</span>));</span>
<span class="line" id="L111"> <span class="tok-kw">for</span> (<span class="tok-number">0</span>..probability) |i| {</span>
<span class="line" id="L112"> entries[temp_states[i]] = <span class="tok-kw">if</span> (i < double_state_count) Table.Fse{</span>
<span class="line" id="L113"> .symbol = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(symbol)),</span>
<span class="line" id="L114"> .bits = share_size_log + <span class="tok-number">1</span>,</span>
<span class="line" id="L115"> .baseline = single_state_count * share_size + <span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(i)) * <span class="tok-number">2</span> * share_size,</span>
<span class="line" id="L116"> } <span class="tok-kw">else</span> Table.Fse{</span>
<span class="line" id="L117"> .symbol = <span class="tok-builtin">@as</span>(<span class="tok-type">u8</span>, <span class="tok-builtin">@intCast</span>(symbol)),</span>
<span class="line" id="L118"> .bits = share_size_log,</span>
<span class="line" id="L119"> .baseline = (<span class="tok-builtin">@as</span>(<span class="tok-type">u16</span>, <span class="tok-builtin">@intCast</span>(i)) - double_state_count) * share_size,</span>
<span class="line" id="L120"> };</span>
<span class="line" id="L121"> }</span>
<span class="line" id="L122"> }</span>
<span class="line" id="L123">}</span>
<span class="line" id="L124"></span>
<span class="line" id="L125"><span class="tok-kw">test</span> buildFseTable {</span>
<span class="line" id="L126"> <span class="tok-kw">const</span> literals_length_default_values = [<span class="tok-number">36</span>]<span class="tok-type">u16</span>{</span>
<span class="line" id="L127"> <span class="tok-number">5</span>, <span class="tok-number">4</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>,</span>
<span class="line" id="L128"> <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">4</span>, <span class="tok-number">3</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>,</span>
<span class="line" id="L129"> <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>,</span>
<span class="line" id="L130"> };</span>
<span class="line" id="L131"></span>
<span class="line" id="L132"> <span class="tok-kw">const</span> match_lengths_default_values = [<span class="tok-number">53</span>]<span class="tok-type">u16</span>{</span>
<span class="line" id="L133"> <span class="tok-number">2</span>, <span class="tok-number">5</span>, <span class="tok-number">4</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>,</span>
<span class="line" id="L134"> <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>,</span>
<span class="line" id="L135"> <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>,</span>
<span class="line" id="L136"> <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>,</span>
<span class="line" id="L137"> };</span>
<span class="line" id="L138"></span>
<span class="line" id="L139"> <span class="tok-kw">const</span> offset_codes_default_values = [<span class="tok-number">29</span>]<span class="tok-type">u16</span>{</span>
<span class="line" id="L140"> <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">3</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>,</span>
<span class="line" id="L141"> <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">2</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>, <span class="tok-number">0</span>,</span>
<span class="line" id="L142"> };</span>
<span class="line" id="L143"></span>
<span class="line" id="L144"> <span class="tok-kw">var</span> entries: [<span class="tok-number">64</span>]Table.Fse = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L145"> <span class="tok-kw">try</span> buildFseTable(&literals_length_default_values, &entries);</span>
<span class="line" id="L146"> <span class="tok-kw">try</span> std.testing.expectEqualSlices(Table.Fse, types.compressed_block.predefined_literal_fse_table.fse, &entries);</span>
<span class="line" id="L147"></span>
<span class="line" id="L148"> <span class="tok-kw">try</span> buildFseTable(&match_lengths_default_values, &entries);</span>
<span class="line" id="L149"> <span class="tok-kw">try</span> std.testing.expectEqualSlices(Table.Fse, types.compressed_block.predefined_match_fse_table.fse, &entries);</span>
<span class="line" id="L150"></span>
<span class="line" id="L151"> <span class="tok-kw">try</span> buildFseTable(&offset_codes_default_values, entries[<span class="tok-number">0</span>..<span class="tok-number">32</span>]);</span>
<span class="line" id="L152"> <span class="tok-kw">try</span> std.testing.expectEqualSlices(Table.Fse, types.compressed_block.predefined_offset_fse_table.fse, entries[<span class="tok-number">0</span>..<span class="tok-number">32</span>]);</span>
<span class="line" id="L153">}</span>
<span class="line" id="L154"></span>
</code></pre></body>
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0 | repos/yazap/docs/src/std/compress | repos/yazap/docs/src/std/compress/lzma2/decode.zig.html | <!doctype html>
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<pre><code><span class="line" id="L1"><span class="tok-kw">const</span> std = <span class="tok-builtin">@import</span>(<span class="tok-str">"../../std.zig"</span>);</span>
<span class="line" id="L2"><span class="tok-kw">const</span> Allocator = std.mem.Allocator;</span>
<span class="line" id="L3"></span>
<span class="line" id="L4"><span class="tok-kw">const</span> lzma = <span class="tok-builtin">@import</span>(<span class="tok-str">"../lzma.zig"</span>);</span>
<span class="line" id="L5"><span class="tok-kw">const</span> DecoderState = lzma.decode.DecoderState;</span>
<span class="line" id="L6"><span class="tok-kw">const</span> LzAccumBuffer = lzma.decode.lzbuffer.LzAccumBuffer;</span>
<span class="line" id="L7"><span class="tok-kw">const</span> Properties = lzma.decode.Properties;</span>
<span class="line" id="L8"><span class="tok-kw">const</span> RangeDecoder = lzma.decode.rangecoder.RangeDecoder;</span>
<span class="line" id="L9"></span>
<span class="line" id="L10"><span class="tok-kw">pub</span> <span class="tok-kw">const</span> Decoder = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L11"> lzma_state: DecoderState,</span>
<span class="line" id="L12"></span>
<span class="line" id="L13"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">init</span>(allocator: Allocator) !Decoder {</span>
<span class="line" id="L14"> <span class="tok-kw">return</span> Decoder{</span>
<span class="line" id="L15"> .lzma_state = <span class="tok-kw">try</span> DecoderState.init(</span>
<span class="line" id="L16"> allocator,</span>
<span class="line" id="L17"> Properties{</span>
<span class="line" id="L18"> .lc = <span class="tok-number">0</span>,</span>
<span class="line" id="L19"> .lp = <span class="tok-number">0</span>,</span>
<span class="line" id="L20"> .pb = <span class="tok-number">0</span>,</span>
<span class="line" id="L21"> },</span>
<span class="line" id="L22"> <span class="tok-null">null</span>,</span>
<span class="line" id="L23"> ),</span>
<span class="line" id="L24"> };</span>
<span class="line" id="L25"> }</span>
<span class="line" id="L26"></span>
<span class="line" id="L27"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">deinit</span>(self: *Decoder, allocator: Allocator) <span class="tok-type">void</span> {</span>
<span class="line" id="L28"> self.lzma_state.deinit(allocator);</span>
<span class="line" id="L29"> self.* = <span class="tok-null">undefined</span>;</span>
<span class="line" id="L30"> }</span>
<span class="line" id="L31"></span>
<span class="line" id="L32"> <span class="tok-kw">pub</span> <span class="tok-kw">fn</span> <span class="tok-fn">decompress</span>(</span>
<span class="line" id="L33"> self: *Decoder,</span>
<span class="line" id="L34"> allocator: Allocator,</span>
<span class="line" id="L35"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L36"> writer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L37"> ) !<span class="tok-type">void</span> {</span>
<span class="line" id="L38"> <span class="tok-kw">var</span> accum = LzAccumBuffer.init(std.math.maxInt(<span class="tok-type">usize</span>));</span>
<span class="line" id="L39"> <span class="tok-kw">defer</span> accum.deinit(allocator);</span>
<span class="line" id="L40"></span>
<span class="line" id="L41"> <span class="tok-kw">while</span> (<span class="tok-null">true</span>) {</span>
<span class="line" id="L42"> <span class="tok-kw">const</span> status = <span class="tok-kw">try</span> reader.readByte();</span>
<span class="line" id="L43"></span>
<span class="line" id="L44"> <span class="tok-kw">switch</span> (status) {</span>
<span class="line" id="L45"> <span class="tok-number">0</span> => <span class="tok-kw">break</span>,</span>
<span class="line" id="L46"> <span class="tok-number">1</span> => <span class="tok-kw">try</span> parseUncompressed(allocator, reader, writer, &accum, <span class="tok-null">true</span>),</span>
<span class="line" id="L47"> <span class="tok-number">2</span> => <span class="tok-kw">try</span> parseUncompressed(allocator, reader, writer, &accum, <span class="tok-null">false</span>),</span>
<span class="line" id="L48"> <span class="tok-kw">else</span> => <span class="tok-kw">try</span> self.parseLzma(allocator, reader, writer, &accum, status),</span>
<span class="line" id="L49"> }</span>
<span class="line" id="L50"> }</span>
<span class="line" id="L51"></span>
<span class="line" id="L52"> <span class="tok-kw">try</span> accum.finish(writer);</span>
<span class="line" id="L53"> }</span>
<span class="line" id="L54"></span>
<span class="line" id="L55"> <span class="tok-kw">fn</span> <span class="tok-fn">parseLzma</span>(</span>
<span class="line" id="L56"> self: *Decoder,</span>
<span class="line" id="L57"> allocator: Allocator,</span>
<span class="line" id="L58"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L59"> writer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L60"> accum: *LzAccumBuffer,</span>
<span class="line" id="L61"> status: <span class="tok-type">u8</span>,</span>
<span class="line" id="L62"> ) !<span class="tok-type">void</span> {</span>
<span class="line" id="L63"> <span class="tok-kw">if</span> (status & <span class="tok-number">0x80</span> == <span class="tok-number">0</span>) {</span>
<span class="line" id="L64"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L65"> }</span>
<span class="line" id="L66"></span>
<span class="line" id="L67"> <span class="tok-kw">const</span> Reset = <span class="tok-kw">struct</span> {</span>
<span class="line" id="L68"> dict: <span class="tok-type">bool</span>,</span>
<span class="line" id="L69"> state: <span class="tok-type">bool</span>,</span>
<span class="line" id="L70"> props: <span class="tok-type">bool</span>,</span>
<span class="line" id="L71"> };</span>
<span class="line" id="L72"></span>
<span class="line" id="L73"> <span class="tok-kw">const</span> reset = <span class="tok-kw">switch</span> ((status >> <span class="tok-number">5</span>) & <span class="tok-number">0x3</span>) {</span>
<span class="line" id="L74"> <span class="tok-number">0</span> => Reset{</span>
<span class="line" id="L75"> .dict = <span class="tok-null">false</span>,</span>
<span class="line" id="L76"> .state = <span class="tok-null">false</span>,</span>
<span class="line" id="L77"> .props = <span class="tok-null">false</span>,</span>
<span class="line" id="L78"> },</span>
<span class="line" id="L79"> <span class="tok-number">1</span> => Reset{</span>
<span class="line" id="L80"> .dict = <span class="tok-null">false</span>,</span>
<span class="line" id="L81"> .state = <span class="tok-null">true</span>,</span>
<span class="line" id="L82"> .props = <span class="tok-null">false</span>,</span>
<span class="line" id="L83"> },</span>
<span class="line" id="L84"> <span class="tok-number">2</span> => Reset{</span>
<span class="line" id="L85"> .dict = <span class="tok-null">false</span>,</span>
<span class="line" id="L86"> .state = <span class="tok-null">true</span>,</span>
<span class="line" id="L87"> .props = <span class="tok-null">true</span>,</span>
<span class="line" id="L88"> },</span>
<span class="line" id="L89"> <span class="tok-number">3</span> => Reset{</span>
<span class="line" id="L90"> .dict = <span class="tok-null">true</span>,</span>
<span class="line" id="L91"> .state = <span class="tok-null">true</span>,</span>
<span class="line" id="L92"> .props = <span class="tok-null">true</span>,</span>
<span class="line" id="L93"> },</span>
<span class="line" id="L94"> <span class="tok-kw">else</span> => <span class="tok-kw">unreachable</span>,</span>
<span class="line" id="L95"> };</span>
<span class="line" id="L96"></span>
<span class="line" id="L97"> <span class="tok-kw">const</span> unpacked_size = blk: {</span>
<span class="line" id="L98"> <span class="tok-kw">var</span> tmp: <span class="tok-type">u64</span> = status & <span class="tok-number">0x1F</span>;</span>
<span class="line" id="L99"> tmp <<= <span class="tok-number">16</span>;</span>
<span class="line" id="L100"> tmp |= <span class="tok-kw">try</span> reader.readIntBig(<span class="tok-type">u16</span>);</span>
<span class="line" id="L101"> <span class="tok-kw">break</span> :blk tmp + <span class="tok-number">1</span>;</span>
<span class="line" id="L102"> };</span>
<span class="line" id="L103"></span>
<span class="line" id="L104"> <span class="tok-kw">const</span> packed_size = blk: {</span>
<span class="line" id="L105"> <span class="tok-kw">const</span> tmp: <span class="tok-type">u17</span> = <span class="tok-kw">try</span> reader.readIntBig(<span class="tok-type">u16</span>);</span>
<span class="line" id="L106"> <span class="tok-kw">break</span> :blk tmp + <span class="tok-number">1</span>;</span>
<span class="line" id="L107"> };</span>
<span class="line" id="L108"></span>
<span class="line" id="L109"> <span class="tok-kw">if</span> (reset.dict) {</span>
<span class="line" id="L110"> <span class="tok-kw">try</span> accum.reset(writer);</span>
<span class="line" id="L111"> }</span>
<span class="line" id="L112"></span>
<span class="line" id="L113"> <span class="tok-kw">if</span> (reset.state) {</span>
<span class="line" id="L114"> <span class="tok-kw">var</span> new_props = self.lzma_state.lzma_props;</span>
<span class="line" id="L115"></span>
<span class="line" id="L116"> <span class="tok-kw">if</span> (reset.props) {</span>
<span class="line" id="L117"> <span class="tok-kw">var</span> props = <span class="tok-kw">try</span> reader.readByte();</span>
<span class="line" id="L118"> <span class="tok-kw">if</span> (props >= <span class="tok-number">225</span>) {</span>
<span class="line" id="L119"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L120"> }</span>
<span class="line" id="L121"></span>
<span class="line" id="L122"> <span class="tok-kw">const</span> lc = <span class="tok-builtin">@as</span>(<span class="tok-type">u4</span>, <span class="tok-builtin">@intCast</span>(props % <span class="tok-number">9</span>));</span>
<span class="line" id="L123"> props /= <span class="tok-number">9</span>;</span>
<span class="line" id="L124"> <span class="tok-kw">const</span> lp = <span class="tok-builtin">@as</span>(<span class="tok-type">u3</span>, <span class="tok-builtin">@intCast</span>(props % <span class="tok-number">5</span>));</span>
<span class="line" id="L125"> props /= <span class="tok-number">5</span>;</span>
<span class="line" id="L126"> <span class="tok-kw">const</span> pb = <span class="tok-builtin">@as</span>(<span class="tok-type">u3</span>, <span class="tok-builtin">@intCast</span>(props));</span>
<span class="line" id="L127"></span>
<span class="line" id="L128"> <span class="tok-kw">if</span> (lc + lp > <span class="tok-number">4</span>) {</span>
<span class="line" id="L129"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L130"> }</span>
<span class="line" id="L131"></span>
<span class="line" id="L132"> new_props = Properties{ .lc = lc, .lp = lp, .pb = pb };</span>
<span class="line" id="L133"> }</span>
<span class="line" id="L134"></span>
<span class="line" id="L135"> <span class="tok-kw">try</span> self.lzma_state.resetState(allocator, new_props);</span>
<span class="line" id="L136"> }</span>
<span class="line" id="L137"></span>
<span class="line" id="L138"> self.lzma_state.unpacked_size = unpacked_size + accum.len;</span>
<span class="line" id="L139"></span>
<span class="line" id="L140"> <span class="tok-kw">var</span> counter = std.io.countingReader(reader);</span>
<span class="line" id="L141"> <span class="tok-kw">const</span> counter_reader = counter.reader();</span>
<span class="line" id="L142"></span>
<span class="line" id="L143"> <span class="tok-kw">var</span> rangecoder = <span class="tok-kw">try</span> RangeDecoder.init(counter_reader);</span>
<span class="line" id="L144"> <span class="tok-kw">while</span> (<span class="tok-kw">try</span> self.lzma_state.process(allocator, counter_reader, writer, accum, &rangecoder) == .continue_) {}</span>
<span class="line" id="L145"></span>
<span class="line" id="L146"> <span class="tok-kw">if</span> (counter.bytes_read != packed_size) {</span>
<span class="line" id="L147"> <span class="tok-kw">return</span> <span class="tok-kw">error</span>.CorruptInput;</span>
<span class="line" id="L148"> }</span>
<span class="line" id="L149"> }</span>
<span class="line" id="L150"></span>
<span class="line" id="L151"> <span class="tok-kw">fn</span> <span class="tok-fn">parseUncompressed</span>(</span>
<span class="line" id="L152"> allocator: Allocator,</span>
<span class="line" id="L153"> reader: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L154"> writer: <span class="tok-kw">anytype</span>,</span>
<span class="line" id="L155"> accum: *LzAccumBuffer,</span>
<span class="line" id="L156"> reset_dict: <span class="tok-type">bool</span>,</span>
<span class="line" id="L157"> ) !<span class="tok-type">void</span> {</span>
<span class="line" id="L158"> <span class="tok-kw">const</span> unpacked_size = <span class="tok-builtin">@as</span>(<span class="tok-type">u17</span>, <span class="tok-kw">try</span> reader.readIntBig(<span class="tok-type">u16</span>)) + <span class="tok-number">1</span>;</span>
<span class="line" id="L159"></span>
<span class="line" id="L160"> <span class="tok-kw">if</span> (reset_dict) {</span>
<span class="line" id="L161"> <span class="tok-kw">try</span> accum.reset(writer);</span>
<span class="line" id="L162"> }</span>
<span class="line" id="L163"></span>
<span class="line" id="L164"> <span class="tok-kw">var</span> i: <span class="tok-builtin">@TypeOf</span>(unpacked_size) = <span class="tok-number">0</span>;</span>
<span class="line" id="L165"> <span class="tok-kw">while</span> (i < unpacked_size) : (i += <span class="tok-number">1</span>) {</span>
<span class="line" id="L166"> <span class="tok-kw">try</span> accum.appendByte(allocator, <span class="tok-kw">try</span> reader.readByte());</span>
<span class="line" id="L167"> }</span>
<span class="line" id="L168"> }</span>
<span class="line" id="L169">};</span>
<span class="line" id="L170"></span>
</code></pre></body>
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