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<span id="646">646</span>
<span id="647">647</span>
<span id="648">648</span>
<span id="649">649</span>
<span id="650">650</span>
<span id="651">651</span>
<span id="652">652</span>
<span id="653">653</span>
<span id="654">654</span>
<span id="655">655</span>
<span id="656">656</span>
<span id="657">657</span>
<span id="658">658</span>
<span id="659">659</span>
<span id="660">660</span>
<span id="661">661</span>
<span id="662">662</span>
<span id="663">663</span>
<span id="664">664</span>
<span id="665">665</span>
<span id="666">666</span>
<span id="667">667</span>
<span id="668">668</span>
<span id="669">669</span>
<span id="670">670</span>
<span id="671">671</span>
<span id="672">672</span>
<span id="673">673</span>
<span id="674">674</span>
<span id="675">675</span>
<span id="676">676</span>
<span id="677">677</span>
<span id="678">678</span>
<span id="679">679</span>
<span id="680">680</span>
<span id="681">681</span>
<span id="682">682</span>
<span id="683">683</span>
<span id="684">684</span>
<span id="685">685</span>
<span id="686">686</span>
<span id="687">687</span>
<span id="688">688</span>
<span id="689">689</span>
<span id="690">690</span>
<span id="691">691</span>
<span id="692">692</span>
<span id="693">693</span>
<span id="694">694</span>
<span id="695">695</span>
<span id="696">696</span>
<span id="697">697</span>
<span id="698">698</span>
<span id="699">699</span>
<span id="700">700</span>
<span id="701">701</span>
<span id="702">702</span>
<span id="703">703</span>
<span id="704">704</span>
<span id="705">705</span>
<span id="706">706</span>
<span id="707">707</span>
<span id="708">708</span>
<span id="709">709</span>
<span id="710">710</span>
<span id="711">711</span>
<span id="712">712</span>
<span id="713">713</span>
<span id="714">714</span>
<span id="715">715</span>
<span id="716">716</span>
<span id="717">717</span>
<span id="718">718</span>
<span id="719">719</span>
<span id="720">720</span>
<span id="721">721</span>
<span id="722">722</span>
<span id="723">723</span>
<span id="724">724</span>
<span id="725">725</span>
<span id="726">726</span>
<span id="727">727</span>
<span id="728">728</span>
<span id="729">729</span>
<span id="730">730</span>
<span id="731">731</span>
<span id="732">732</span>
<span id="733">733</span>
<span id="734">734</span>
<span id="735">735</span>
<span id="736">736</span>
<span id="737">737</span>
<span id="738">738</span>
<span id="739">739</span>
<span id="740">740</span>
<span id="741">741</span>
<span id="742">742</span>
<span id="743">743</span>
<span id="744">744</span>
<span id="745">745</span>
<span id="746">746</span>
<span id="747">747</span>
<span id="748">748</span>
<span id="749">749</span>
<span id="750">750</span>
<span id="751">751</span>
<span id="752">752</span>
<span id="753">753</span>
<span id="754">754</span>
<span id="755">755</span>
<span id="756">756</span>
<span id="757">757</span>
<span id="758">758</span>
<span id="759">759</span>
<span id="760">760</span>
<span id="761">761</span>
<span id="762">762</span>
<span id="763">763</span>
<span id="764">764</span>
<span id="765">765</span>
<span id="766">766</span>
<span id="767">767</span>
<span id="768">768</span>
<span id="769">769</span>
<span id="770">770</span>
<span id="771">771</span>
<span id="772">772</span>
<span id="773">773</span>
<span id="774">774</span>
<span id="775">775</span>
<span id="776">776</span>
<span id="777">777</span>
<span id="778">778</span>
<span id="779">779</span>
<span id="780">780</span>
<span id="781">781</span>
<span id="782">782</span>
<span id="783">783</span>
<span id="784">784</span>
<span id="785">785</span>
<span id="786">786</span>
<span id="787">787</span>
<span id="788">788</span>
<span id="789">789</span>
<span id="790">790</span>
<span id="791">791</span>
<span id="792">792</span>
<span id="793">793</span>
<span id="794">794</span>
<span id="795">795</span>
<span id="796">796</span>
<span id="797">797</span>
<span id="798">798</span>
<span id="799">799</span>
<span id="800">800</span>
<span id="801">801</span>
<span id="802">802</span>
<span id="803">803</span>
<span id="804">804</span>
<span id="805">805</span>
<span id="806">806</span>
<span id="807">807</span>
<span id="808">808</span>
<span id="809">809</span>
<span id="810">810</span>
<span id="811">811</span>
<span id="812">812</span>
<span id="813">813</span>
<span id="814">814</span>
<span id="815">815</span>
<span id="816">816</span>
<span id="817">817</span>
<span id="818">818</span>
<span id="819">819</span>
<span id="820">820</span>
<span id="821">821</span>
<span id="822">822</span>
<span id="823">823</span>
<span id="824">824</span>
<span id="825">825</span>
<span id="826">826</span>
<span id="827">827</span>
<span id="828">828</span>
<span id="829">829</span>
<span id="830">830</span>
<span id="831">831</span>
<span id="832">832</span>
<span id="833">833</span>
<span id="834">834</span>
<span id="835">835</span>
<span id="836">836</span>
<span id="837">837</span>
<span id="838">838</span>
<span id="839">839</span>
<span id="840">840</span>
<span id="841">841</span>
<span id="842">842</span>
<span id="843">843</span>
<span id="844">844</span>
<span id="845">845</span>
<span id="846">846</span>
<span id="847">847</span>
<span id="848">848</span>
<span id="849">849</span>
<span id="850">850</span>
<span id="851">851</span>
<span id="852">852</span>
<span id="853">853</span>
<span id="854">854</span>
<span id="855">855</span>
<span id="856">856</span>
<span id="857">857</span>
<span id="858">858</span>
<span id="859">859</span>
<span id="860">860</span>
<span id="861">861</span>
<span id="862">862</span>
<span id="863">863</span>
<span id="864">864</span>
<span id="865">865</span>
<span id="866">866</span>
<span id="867">867</span>
<span id="868">868</span>
<span id="869">869</span>
<span id="870">870</span>
<span id="871">871</span>
<span id="872">872</span>
<span id="873">873</span>
<span id="874">874</span>
<span id="875">875</span>
<span id="876">876</span>
<span id="877">877</span>
<span id="878">878</span>
<span id="879">879</span>
<span id="880">880</span>
<span id="881">881</span>
<span id="882">882</span>
<span id="883">883</span>
</pre><pre class='rust '>
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>borrow</span>::<span class='ident'>Cow</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>collections</span>::{
    <span class='ident'>BinaryHeap</span>,
    <span class='ident'>BTreeMap</span>,
    <span class='ident'>BTreeSet</span>,
    <span class='ident'>LinkedList</span>,
    <span class='ident'>HashMap</span>,
    <span class='ident'>HashSet</span>,
    <span class='ident'>VecDeque</span>,
};
<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>&quot;nightly&quot;</span>)]</span>
<span class='kw'>use</span> <span class='ident'>collections</span>::<span class='ident'>enum_set</span>::{<span class='ident'>CLike</span>, <span class='ident'>EnumSet</span>};
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>hash</span>::<span class='ident'>Hash</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>marker</span>::<span class='ident'>PhantomData</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>path</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>rc</span>::<span class='ident'>Rc</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>str</span>;
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>sync</span>::<span class='ident'>Arc</span>;

<span class='kw'>use</span> <span class='ident'>num</span>::<span class='ident'>FromPrimitive</span>;

<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>&quot;nightly&quot;</span>)]</span>
<span class='kw'>use</span> <span class='ident'>core</span>::<span class='ident'>nonzero</span>::{<span class='ident'>NonZero</span>, <span class='ident'>Zeroable</span>};

<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>&quot;nightly&quot;</span>)]</span>
<span class='kw'>use</span> <span class='ident'>std</span>::<span class='ident'>num</span>::<span class='ident'>Zero</span>;

<span class='kw'>use</span> <span class='ident'>de</span>::{
    <span class='ident'>Deserialize</span>,
    <span class='ident'>Deserializer</span>,
    <span class='ident'>EnumVisitor</span>,
    <span class='ident'>Error</span>,
    <span class='ident'>MapVisitor</span>,
    <span class='ident'>SeqVisitor</span>,
    <span class='ident'>Type</span>,
    <span class='ident'>VariantVisitor</span>,
    <span class='ident'>Visitor</span>,
};

<span class='comment'>///////////////////////////////////////////////////////////////////////////////</span>

<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>UnitVisitor</span>;

<span class='kw'>impl</span> <span class='ident'>Visitor</span> <span class='kw'>for</span> <span class='ident'>UnitVisitor</span> {
    <span class='kw'>type</span> <span class='ident'>Value</span> <span class='op'>=</span> ();

    <span class='kw'>fn</span> <span class='ident'>visit_unit</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span>(), <span class='ident'>E</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
    {
        <span class='prelude-val'>Ok</span>(())
    }

    <span class='kw'>fn</span> <span class='ident'>visit_seq</span><span class='op'>&lt;</span><span class='ident'>V</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='kw-2'>mut</span> <span class='ident'>visitor</span>: <span class='ident'>V</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span>(), <span class='ident'>V</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>V</span>: <span class='ident'>SeqVisitor</span>,
    {
        <span class='ident'>visitor</span>.<span class='ident'>end</span>()
    }
}

<span class='kw'>impl</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> () {
    <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span>(), <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
    {
        <span class='ident'>deserializer</span>.<span class='ident'>visit_unit</span>(<span class='ident'>UnitVisitor</span>)
    }
}

<span class='comment'>///////////////////////////////////////////////////////////////////////////////</span>

<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>BoolVisitor</span>;

<span class='kw'>impl</span> <span class='ident'>Visitor</span> <span class='kw'>for</span> <span class='ident'>BoolVisitor</span> {
    <span class='kw'>type</span> <span class='ident'>Value</span> <span class='op'>=</span> <span class='ident'>bool</span>;

    <span class='kw'>fn</span> <span class='ident'>visit_bool</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>bool</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>bool</span>, <span class='ident'>E</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
    {
        <span class='prelude-val'>Ok</span>(<span class='ident'>v</span>)
    }

    <span class='kw'>fn</span> <span class='ident'>visit_str</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>s</span>: <span class='kw-2'>&amp;</span><span class='ident'>str</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>bool</span>, <span class='ident'>E</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
    {
        <span class='kw'>match</span> <span class='ident'>s</span>.<span class='ident'>trim</span>() {
            <span class='string'>&quot;true&quot;</span> <span class='op'>=&gt;</span> <span class='prelude-val'>Ok</span>(<span class='boolval'>true</span>),
            <span class='string'>&quot;false&quot;</span> <span class='op'>=&gt;</span> <span class='prelude-val'>Ok</span>(<span class='boolval'>false</span>),
            _ <span class='op'>=&gt;</span> <span class='prelude-val'>Err</span>(<span class='ident'>Error</span>::<span class='ident'>type_mismatch</span>(<span class='ident'>Type</span>::<span class='ident'>Bool</span>)),
        }
    }
}

<span class='kw'>impl</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> <span class='ident'>bool</span> {
    <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>bool</span>, <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
    {
        <span class='ident'>deserializer</span>.<span class='ident'>visit_bool</span>(<span class='ident'>BoolVisitor</span>)
    }
}

<span class='comment'>///////////////////////////////////////////////////////////////////////////////</span>

<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>impl_deserialize_num_method</span> {
    (<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>src_ty</span>:<span class='ident'>ty</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>method</span>:<span class='ident'>ident</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>from_method</span>:<span class='ident'>ident</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>:<span class='ident'>expr</span>) <span class='op'>=&gt;</span> {
        <span class='attribute'>#[<span class='ident'>inline</span>]</span>
        <span class='kw'>fn</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>method</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>src_ty</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>T</span>, <span class='ident'>E</span><span class='op'>&gt;</span>
            <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
        {
            <span class='kw'>match</span> <span class='ident'>FromPrimitive</span>::<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>from_method</span>(<span class='ident'>v</span>) {
                <span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=&gt;</span> <span class='prelude-val'>Ok</span>(<span class='ident'>v</span>),
                <span class='prelude-val'>None</span> <span class='op'>=&gt;</span> <span class='prelude-val'>Err</span>(<span class='ident'>Error</span>::<span class='ident'>type_mismatch</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>)),
            }
        }
    }
}

<span class='kw'>pub</span> <span class='kw'>struct</span> <span class='ident'>PrimitiveVisitor</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> {
    <span class='ident'>marker</span>: <span class='ident'>PhantomData</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>,
}

<span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> <span class='ident'>PrimitiveVisitor</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> {
    <span class='attribute'>#[<span class='ident'>inline</span>]</span>
    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>() <span class='op'>-&gt;</span> <span class='kw'>Self</span> {
        <span class='ident'>PrimitiveVisitor</span> {
            <span class='ident'>marker</span>: <span class='ident'>PhantomData</span>,
        }
    }
}

<span class='kw'>impl</span><span class='op'>&lt;</span>
    <span class='ident'>T</span>: <span class='ident'>Deserialize</span> <span class='op'>+</span> <span class='ident'>FromPrimitive</span> <span class='op'>+</span> <span class='ident'>str</span>::<span class='ident'>FromStr</span>
<span class='op'>&gt;</span> <span class='ident'>Visitor</span> <span class='kw'>for</span> <span class='ident'>PrimitiveVisitor</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> {
    <span class='kw'>type</span> <span class='ident'>Value</span> <span class='op'>=</span> <span class='ident'>T</span>;

    <span class='macro'>impl_deserialize_num_method</span><span class='macro'>!</span>(<span class='ident'>isize</span>, <span class='ident'>visit_isize</span>, <span class='ident'>from_isize</span>, <span class='ident'>Type</span>::<span class='ident'>Isize</span>);
    <span class='macro'>impl_deserialize_num_method</span><span class='macro'>!</span>(<span class='ident'>i8</span>, <span class='ident'>visit_i8</span>, <span class='ident'>from_i8</span>, <span class='ident'>Type</span>::<span class='ident'>I8</span>);
    <span class='macro'>impl_deserialize_num_method</span><span class='macro'>!</span>(<span class='ident'>i16</span>, <span class='ident'>visit_i16</span>, <span class='ident'>from_i16</span>, <span class='ident'>Type</span>::<span class='ident'>I16</span>);
    <span class='macro'>impl_deserialize_num_method</span><span class='macro'>!</span>(<span class='ident'>i32</span>, <span class='ident'>visit_i32</span>, <span class='ident'>from_i32</span>, <span class='ident'>Type</span>::<span class='ident'>I32</span>);
    <span class='macro'>impl_deserialize_num_method</span><span class='macro'>!</span>(<span class='ident'>i64</span>, <span class='ident'>visit_i64</span>, <span class='ident'>from_i64</span>, <span class='ident'>Type</span>::<span class='ident'>I64</span>);
    <span class='macro'>impl_deserialize_num_method</span><span class='macro'>!</span>(<span class='ident'>usize</span>, <span class='ident'>visit_usize</span>, <span class='ident'>from_usize</span>, <span class='ident'>Type</span>::<span class='ident'>Usize</span>);
    <span class='macro'>impl_deserialize_num_method</span><span class='macro'>!</span>(<span class='ident'>u8</span>, <span class='ident'>visit_u8</span>, <span class='ident'>from_u8</span>, <span class='ident'>Type</span>::<span class='ident'>U8</span>);
    <span class='macro'>impl_deserialize_num_method</span><span class='macro'>!</span>(<span class='ident'>u16</span>, <span class='ident'>visit_u16</span>, <span class='ident'>from_u16</span>, <span class='ident'>Type</span>::<span class='ident'>U16</span>);
    <span class='macro'>impl_deserialize_num_method</span><span class='macro'>!</span>(<span class='ident'>u32</span>, <span class='ident'>visit_u32</span>, <span class='ident'>from_u32</span>, <span class='ident'>Type</span>::<span class='ident'>U32</span>);
    <span class='macro'>impl_deserialize_num_method</span><span class='macro'>!</span>(<span class='ident'>u64</span>, <span class='ident'>visit_u64</span>, <span class='ident'>from_u64</span>, <span class='ident'>Type</span>::<span class='ident'>U64</span>);
    <span class='macro'>impl_deserialize_num_method</span><span class='macro'>!</span>(<span class='ident'>f32</span>, <span class='ident'>visit_f32</span>, <span class='ident'>from_f32</span>, <span class='ident'>Type</span>::<span class='ident'>F32</span>);
    <span class='macro'>impl_deserialize_num_method</span><span class='macro'>!</span>(<span class='ident'>f64</span>, <span class='ident'>visit_f64</span>, <span class='ident'>from_f64</span>, <span class='ident'>Type</span>::<span class='ident'>F64</span>);

    <span class='attribute'>#[<span class='ident'>inline</span>]</span>
    <span class='kw'>fn</span> <span class='ident'>visit_str</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='kw-2'>&amp;</span><span class='ident'>str</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>T</span>, <span class='ident'>E</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
    {
        <span class='ident'>str</span>::<span class='ident'>FromStr</span>::<span class='ident'>from_str</span>(<span class='ident'>v</span>.<span class='ident'>trim</span>()).<span class='ident'>or</span>(<span class='prelude-val'>Err</span>(<span class='ident'>Error</span>::<span class='ident'>type_mismatch</span>(<span class='ident'>Type</span>::<span class='ident'>Str</span>)))
    }
}

<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>impl_deserialize_num</span> {
    (<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>:<span class='ident'>ty</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>method</span>:<span class='ident'>ident</span>) <span class='op'>=&gt;</span> {
        <span class='kw'>impl</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span> {
            <span class='attribute'>#[<span class='ident'>inline</span>]</span>
            <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>, <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
                <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
            {
                <span class='ident'>deserializer</span>.<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>method</span>(<span class='ident'>PrimitiveVisitor</span>::<span class='ident'>new</span>())
            }
        }
    }
}

<span class='macro'>impl_deserialize_num</span><span class='macro'>!</span>(<span class='ident'>isize</span>, <span class='ident'>visit_isize</span>);
<span class='macro'>impl_deserialize_num</span><span class='macro'>!</span>(<span class='ident'>i8</span>, <span class='ident'>visit_i8</span>);
<span class='macro'>impl_deserialize_num</span><span class='macro'>!</span>(<span class='ident'>i16</span>, <span class='ident'>visit_i16</span>);
<span class='macro'>impl_deserialize_num</span><span class='macro'>!</span>(<span class='ident'>i32</span>, <span class='ident'>visit_i32</span>);
<span class='macro'>impl_deserialize_num</span><span class='macro'>!</span>(<span class='ident'>i64</span>, <span class='ident'>visit_i64</span>);
<span class='macro'>impl_deserialize_num</span><span class='macro'>!</span>(<span class='ident'>usize</span>, <span class='ident'>visit_usize</span>);
<span class='macro'>impl_deserialize_num</span><span class='macro'>!</span>(<span class='ident'>u8</span>, <span class='ident'>visit_u8</span>);
<span class='macro'>impl_deserialize_num</span><span class='macro'>!</span>(<span class='ident'>u16</span>, <span class='ident'>visit_u16</span>);
<span class='macro'>impl_deserialize_num</span><span class='macro'>!</span>(<span class='ident'>u32</span>, <span class='ident'>visit_u32</span>);
<span class='macro'>impl_deserialize_num</span><span class='macro'>!</span>(<span class='ident'>u64</span>, <span class='ident'>visit_u64</span>);
<span class='macro'>impl_deserialize_num</span><span class='macro'>!</span>(<span class='ident'>f32</span>, <span class='ident'>visit_f32</span>);
<span class='macro'>impl_deserialize_num</span><span class='macro'>!</span>(<span class='ident'>f64</span>, <span class='ident'>visit_f64</span>);

<span class='comment'>///////////////////////////////////////////////////////////////////////////////</span>

<span class='kw'>struct</span> <span class='ident'>CharVisitor</span>;

<span class='kw'>impl</span> <span class='ident'>Visitor</span> <span class='kw'>for</span> <span class='ident'>CharVisitor</span> {
    <span class='kw'>type</span> <span class='ident'>Value</span> <span class='op'>=</span> <span class='ident'>char</span>;

    <span class='attribute'>#[<span class='ident'>inline</span>]</span>
    <span class='kw'>fn</span> <span class='ident'>visit_char</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>char</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>char</span>, <span class='ident'>E</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
    {
        <span class='prelude-val'>Ok</span>(<span class='ident'>v</span>)
    }

    <span class='attribute'>#[<span class='ident'>inline</span>]</span>
    <span class='kw'>fn</span> <span class='ident'>visit_str</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='kw-2'>&amp;</span><span class='ident'>str</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>char</span>, <span class='ident'>E</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
    {
        <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>iter</span> <span class='op'>=</span> <span class='ident'>v</span>.<span class='ident'>chars</span>();
        <span class='kw'>if</span> <span class='kw'>let</span> <span class='prelude-val'>Some</span>(<span class='ident'>v</span>) <span class='op'>=</span> <span class='ident'>iter</span>.<span class='ident'>next</span>() {
            <span class='kw'>if</span> <span class='ident'>iter</span>.<span class='ident'>next</span>().<span class='ident'>is_some</span>() {
                <span class='prelude-val'>Err</span>(<span class='ident'>Error</span>::<span class='ident'>type_mismatch</span>(<span class='ident'>Type</span>::<span class='ident'>Char</span>))
            } <span class='kw'>else</span> {
                <span class='prelude-val'>Ok</span>(<span class='ident'>v</span>)
            }
        } <span class='kw'>else</span> {
            <span class='prelude-val'>Err</span>(<span class='ident'>Error</span>::<span class='ident'>end_of_stream</span>())
        }
    }
}

<span class='kw'>impl</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> <span class='ident'>char</span> {
    <span class='attribute'>#[<span class='ident'>inline</span>]</span>
    <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>char</span>, <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
    {
        <span class='ident'>deserializer</span>.<span class='ident'>visit_char</span>(<span class='ident'>CharVisitor</span>)
    }
}

<span class='comment'>///////////////////////////////////////////////////////////////////////////////</span>

<span class='kw'>struct</span> <span class='ident'>StringVisitor</span>;

<span class='kw'>impl</span> <span class='ident'>Visitor</span> <span class='kw'>for</span> <span class='ident'>StringVisitor</span> {
    <span class='kw'>type</span> <span class='ident'>Value</span> <span class='op'>=</span> <span class='ident'>String</span>;

    <span class='kw'>fn</span> <span class='ident'>visit_str</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='kw-2'>&amp;</span><span class='ident'>str</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>String</span>, <span class='ident'>E</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
    {
        <span class='prelude-val'>Ok</span>(<span class='ident'>v</span>.<span class='ident'>to_string</span>())
    }

    <span class='kw'>fn</span> <span class='ident'>visit_string</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>String</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>String</span>, <span class='ident'>E</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
    {
        <span class='prelude-val'>Ok</span>(<span class='ident'>v</span>)
    }

    <span class='kw'>fn</span> <span class='ident'>visit_bytes</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='kw-2'>&amp;</span>[<span class='ident'>u8</span>]) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>String</span>, <span class='ident'>E</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
    {
        <span class='kw'>match</span> <span class='ident'>str</span>::<span class='ident'>from_utf8</span>(<span class='ident'>v</span>) {
            <span class='prelude-val'>Ok</span>(<span class='ident'>s</span>) <span class='op'>=&gt;</span> <span class='prelude-val'>Ok</span>(<span class='ident'>s</span>.<span class='ident'>to_string</span>()),
            <span class='prelude-val'>Err</span>(_) <span class='op'>=&gt;</span> <span class='prelude-val'>Err</span>(<span class='ident'>Error</span>::<span class='ident'>type_mismatch</span>(<span class='ident'>Type</span>::<span class='ident'>String</span>)),
        }
    }

    <span class='kw'>fn</span> <span class='ident'>visit_byte_buf</span><span class='op'>&lt;</span><span class='lifetime'>&#39;a</span>, <span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>Vec</span><span class='op'>&lt;</span><span class='ident'>u8</span><span class='op'>&gt;</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>String</span>, <span class='ident'>E</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
    {
        <span class='kw'>match</span> <span class='ident'>String</span>::<span class='ident'>from_utf8</span>(<span class='ident'>v</span>) {
            <span class='prelude-val'>Ok</span>(<span class='ident'>s</span>) <span class='op'>=&gt;</span> <span class='prelude-val'>Ok</span>(<span class='ident'>s</span>),
            <span class='prelude-val'>Err</span>(_) <span class='op'>=&gt;</span> <span class='prelude-val'>Err</span>(<span class='ident'>Error</span>::<span class='ident'>type_mismatch</span>(<span class='ident'>Type</span>::<span class='ident'>String</span>)),
        }
    }
}

<span class='kw'>impl</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> <span class='ident'>String</span> {
    <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>String</span>, <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
    {
        <span class='ident'>deserializer</span>.<span class='ident'>visit_string</span>(<span class='ident'>StringVisitor</span>)
    }
}

<span class='comment'>///////////////////////////////////////////////////////////////////////////////</span>

<span class='kw'>struct</span> <span class='ident'>OptionVisitor</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> {
    <span class='ident'>marker</span>: <span class='ident'>PhantomData</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>,
}

<span class='kw'>impl</span><span class='op'>&lt;</span>
    <span class='ident'>T</span>: <span class='ident'>Deserialize</span>,
<span class='op'>&gt;</span> <span class='ident'>Visitor</span> <span class='kw'>for</span> <span class='ident'>OptionVisitor</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> {
    <span class='kw'>type</span> <span class='ident'>Value</span> <span class='op'>=</span> <span class='prelude-ty'>Option</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>;

    <span class='attribute'>#[<span class='ident'>inline</span>]</span>
    <span class='kw'>fn</span> <span class='ident'>visit_none</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='prelude-ty'>Option</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>, <span class='ident'>E</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
    {
        <span class='prelude-val'>Ok</span>(<span class='prelude-val'>None</span>)
    }

    <span class='attribute'>#[<span class='ident'>inline</span>]</span>
    <span class='kw'>fn</span> <span class='ident'>visit_some</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='prelude-ty'>Option</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>, <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
    {
        <span class='prelude-val'>Ok</span>(<span class='prelude-val'>Some</span>(<span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>Deserialize</span>::<span class='ident'>deserialize</span>(<span class='ident'>deserializer</span>))))
    }
}

<span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> <span class='prelude-ty'>Option</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> <span class='kw'>where</span> <span class='ident'>T</span>: <span class='ident'>Deserialize</span> {
    <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='prelude-ty'>Option</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>, <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
    {
        <span class='ident'>deserializer</span>.<span class='ident'>visit_option</span>(<span class='ident'>OptionVisitor</span> { <span class='ident'>marker</span>: <span class='ident'>PhantomData</span> })
    }
}

<span class='comment'>///////////////////////////////////////////////////////////////////////////////</span>

<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>set_impl</span> {
    (
        <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>:<span class='ident'>ty</span>,
        <span class='op'>&lt;</span> $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>constraints</span>:<span class='ident'>ident</span>),<span class='op'>*</span> <span class='op'>&gt;</span>,
        <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor_name</span>:<span class='ident'>ident</span>,
        <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span>:<span class='ident'>ident</span>,
        <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ctor</span>:<span class='ident'>expr</span>,
        <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>with_capacity</span>:<span class='ident'>expr</span>,
        <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>insert</span>:<span class='ident'>expr</span>
    ) <span class='op'>=&gt;</span> {
        <span class='kw'>pub</span> <span class='kw'>struct</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor_name</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> {
            <span class='ident'>marker</span>: <span class='ident'>PhantomData</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>,
        }

        <span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor_name</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> {
            <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>() <span class='op'>-&gt;</span> <span class='kw'>Self</span> {
                <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor_name</span> {
                    <span class='ident'>marker</span>: <span class='ident'>PhantomData</span>,
                }
            }
        }

        <span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> <span class='ident'>Visitor</span> <span class='kw'>for</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor_name</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>
            <span class='kw'>where</span> <span class='ident'>T</span>: $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>constraints</span> <span class='op'>+</span>)<span class='op'>*</span>,
        {
            <span class='kw'>type</span> <span class='ident'>Value</span> <span class='op'>=</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>;

            <span class='attribute'>#[<span class='ident'>inline</span>]</span>
            <span class='kw'>fn</span> <span class='ident'>visit_unit</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>, <span class='ident'>E</span><span class='op'>&gt;</span>
                <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
            {
                <span class='prelude-val'>Ok</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ctor</span>)
            }

            <span class='attribute'>#[<span class='ident'>inline</span>]</span>
            <span class='kw'>fn</span> <span class='ident'>visit_seq</span><span class='op'>&lt;</span><span class='ident'>V</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='kw-2'>mut</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span>: <span class='ident'>V</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>, <span class='ident'>V</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
                <span class='kw'>where</span> <span class='ident'>V</span>: <span class='ident'>SeqVisitor</span>,
            {
                <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>values</span> <span class='op'>=</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>with_capacity</span>;

                <span class='kw'>while</span> <span class='kw'>let</span> <span class='prelude-val'>Some</span>(<span class='ident'>value</span>) <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span>.<span class='ident'>visit</span>()) {
                    <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>insert</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>values</span>, <span class='ident'>value</span>);
                }

                <span class='macro'>try</span><span class='macro'>!</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span>.<span class='ident'>end</span>());

                <span class='prelude-val'>Ok</span>(<span class='ident'>values</span>)
            }
        }

        <span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>
            <span class='kw'>where</span> <span class='ident'>T</span>: $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>constraints</span> <span class='op'>+</span>)<span class='op'>*</span>,
        {
            <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>, <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
                <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
            {
                <span class='ident'>deserializer</span>.<span class='ident'>visit_seq</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor_name</span>::<span class='ident'>new</span>())
            }
        }
    }
}

<span class='macro'>set_impl</span><span class='macro'>!</span>(
    <span class='ident'>BinaryHeap</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>,
    <span class='op'>&lt;</span><span class='ident'>Deserialize</span>, <span class='ident'>Ord</span><span class='op'>&gt;</span>,
    <span class='ident'>BinaryHeapVisitor</span>,
    <span class='ident'>visitor</span>,
    <span class='ident'>BinaryHeap</span>::<span class='ident'>new</span>(),
    <span class='ident'>BinaryHeap</span>::<span class='ident'>with_capacity</span>(<span class='ident'>visitor</span>.<span class='ident'>size_hint</span>().<span class='number'>0</span>),
    <span class='ident'>BinaryHeap</span>::<span class='ident'>push</span>);

<span class='macro'>set_impl</span><span class='macro'>!</span>(
    <span class='ident'>BTreeSet</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>,
    <span class='op'>&lt;</span><span class='ident'>Deserialize</span>, <span class='ident'>Eq</span>, <span class='ident'>Ord</span><span class='op'>&gt;</span>,
    <span class='ident'>BTreeSetVisitor</span>,
    <span class='ident'>visitor</span>,
    <span class='ident'>BTreeSet</span>::<span class='ident'>new</span>(),
    <span class='ident'>BTreeSet</span>::<span class='ident'>new</span>(),
    <span class='ident'>BTreeSet</span>::<span class='ident'>insert</span>);

<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>&quot;nightly&quot;</span>)]</span>
<span class='macro'>set_impl</span><span class='macro'>!</span>(
    <span class='ident'>EnumSet</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>,
    <span class='op'>&lt;</span><span class='ident'>Deserialize</span>, <span class='ident'>CLike</span><span class='op'>&gt;</span>,
    <span class='ident'>EnumSetVisitor</span>,
    <span class='ident'>visitor</span>,
    <span class='ident'>EnumSet</span>::<span class='ident'>new</span>(),
    <span class='ident'>EnumSet</span>::<span class='ident'>new</span>(),
    <span class='ident'>EnumSet</span>::<span class='ident'>insert</span>);

<span class='macro'>set_impl</span><span class='macro'>!</span>(
    <span class='ident'>LinkedList</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>,
    <span class='op'>&lt;</span><span class='ident'>Deserialize</span><span class='op'>&gt;</span>,
    <span class='ident'>LinkedListVisitor</span>,
    <span class='ident'>visitor</span>,
    <span class='ident'>LinkedList</span>::<span class='ident'>new</span>(),
    <span class='ident'>LinkedList</span>::<span class='ident'>new</span>(),
    <span class='ident'>LinkedList</span>::<span class='ident'>push_back</span>);

<span class='macro'>set_impl</span><span class='macro'>!</span>(
    <span class='ident'>HashSet</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>,
    <span class='op'>&lt;</span><span class='ident'>Deserialize</span>, <span class='ident'>Eq</span>, <span class='ident'>Hash</span><span class='op'>&gt;</span>,
    <span class='ident'>HashSetVisitor</span>,
    <span class='ident'>visitor</span>,
    <span class='ident'>HashSet</span>::<span class='ident'>new</span>(),
    <span class='ident'>HashSet</span>::<span class='ident'>with_capacity</span>(<span class='ident'>visitor</span>.<span class='ident'>size_hint</span>().<span class='number'>0</span>),
    <span class='ident'>HashSet</span>::<span class='ident'>insert</span>);

<span class='macro'>set_impl</span><span class='macro'>!</span>(
    <span class='ident'>Vec</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>,
    <span class='op'>&lt;</span><span class='ident'>Deserialize</span><span class='op'>&gt;</span>,
    <span class='ident'>VecVisitor</span>,
    <span class='ident'>visitor</span>,
    <span class='ident'>Vec</span>::<span class='ident'>new</span>(),
    <span class='ident'>Vec</span>::<span class='ident'>with_capacity</span>(<span class='ident'>visitor</span>.<span class='ident'>size_hint</span>().<span class='number'>0</span>),
    <span class='ident'>Vec</span>::<span class='ident'>push</span>);

<span class='macro'>set_impl</span><span class='macro'>!</span>(
    <span class='ident'>VecDeque</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>,
    <span class='op'>&lt;</span><span class='ident'>Deserialize</span><span class='op'>&gt;</span>,
    <span class='ident'>VecDequeVisitor</span>,
    <span class='ident'>visitor</span>,
    <span class='ident'>VecDeque</span>::<span class='ident'>new</span>(),
    <span class='ident'>VecDeque</span>::<span class='ident'>with_capacity</span>(<span class='ident'>visitor</span>.<span class='ident'>size_hint</span>().<span class='number'>0</span>),
    <span class='ident'>VecDeque</span>::<span class='ident'>push_back</span>);

<span class='comment'>///////////////////////////////////////////////////////////////////////////////</span>

<span class='kw'>struct</span> <span class='ident'>ArrayVisitor0</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> {
    <span class='ident'>marker</span>: <span class='ident'>PhantomData</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>,
}

<span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> <span class='ident'>ArrayVisitor0</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> {
    <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>() <span class='op'>-&gt;</span> <span class='kw'>Self</span> {
        <span class='ident'>ArrayVisitor0</span> {
            <span class='ident'>marker</span>: <span class='ident'>PhantomData</span>,
        }
    }
}

<span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> <span class='ident'>Visitor</span> <span class='kw'>for</span> <span class='ident'>ArrayVisitor0</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> <span class='kw'>where</span> <span class='ident'>T</span>: <span class='ident'>Deserialize</span> <span class='op'>+</span> <span class='ident'>Default</span> {
    <span class='kw'>type</span> <span class='ident'>Value</span> <span class='op'>=</span> [<span class='ident'>T</span>; <span class='number'>0</span>];

    <span class='attribute'>#[<span class='ident'>inline</span>]</span>
    <span class='kw'>fn</span> <span class='ident'>visit_unit</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span>[<span class='ident'>T</span>; <span class='number'>0</span>], <span class='ident'>E</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
    {
        <span class='prelude-val'>Ok</span>([<span class='ident'>T</span>::<span class='ident'>default</span>(); <span class='number'>0</span>])
    }

    <span class='attribute'>#[<span class='ident'>inline</span>]</span>
    <span class='kw'>fn</span> <span class='ident'>visit_seq</span><span class='op'>&lt;</span><span class='ident'>V</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='kw-2'>mut</span> <span class='ident'>visitor</span>: <span class='ident'>V</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span>[<span class='ident'>T</span>; <span class='number'>0</span>], <span class='ident'>V</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>V</span>: <span class='ident'>SeqVisitor</span>,
    {
        <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>visitor</span>.<span class='ident'>end</span>());
        <span class='prelude-val'>Ok</span>([<span class='ident'>T</span>::<span class='ident'>default</span>(); <span class='number'>0</span>])
    }
}

<span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> [<span class='ident'>T</span>; <span class='number'>0</span>]
    <span class='kw'>where</span> <span class='ident'>T</span>: <span class='ident'>Deserialize</span> <span class='op'>+</span> <span class='ident'>Default</span>
{
    <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span>[<span class='ident'>T</span>; <span class='number'>0</span>], <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
    {
        <span class='ident'>deserializer</span>.<span class='ident'>visit_seq</span>(<span class='ident'>ArrayVisitor0</span>::<span class='ident'>new</span>())
    }
}

<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>array_impls</span> {
    ($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span>:<span class='ident'>ident</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>len</span>:<span class='ident'>expr</span> <span class='op'>=&gt;</span> ($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>:<span class='ident'>ident</span>),<span class='op'>+</span>),)<span class='op'>+</span>) <span class='op'>=&gt;</span> {
        $(
            <span class='kw'>struct</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> {
                <span class='ident'>marker</span>: <span class='ident'>PhantomData</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>,
            }

            <span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> {
                <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>() <span class='op'>-&gt;</span> <span class='kw'>Self</span> {
                    <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span> {
                        <span class='ident'>marker</span>: <span class='ident'>PhantomData</span>
                    }
                }
            }

            <span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> <span class='ident'>Visitor</span> <span class='kw'>for</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> <span class='kw'>where</span> <span class='ident'>T</span>: <span class='ident'>Deserialize</span> {
                <span class='kw'>type</span> <span class='ident'>Value</span> <span class='op'>=</span> [<span class='ident'>T</span>; <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>len</span>];

                <span class='attribute'>#[<span class='ident'>inline</span>]</span>
                <span class='kw'>fn</span> <span class='ident'>visit_seq</span><span class='op'>&lt;</span><span class='ident'>V</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='kw-2'>mut</span> <span class='ident'>visitor</span>: <span class='ident'>V</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span>[<span class='ident'>T</span>; <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>len</span>], <span class='ident'>V</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
                    <span class='kw'>where</span> <span class='ident'>V</span>: <span class='ident'>SeqVisitor</span>,
                {
                    $(
                        <span class='kw'>let</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>visitor</span>.<span class='ident'>visit</span>()) {
                            <span class='prelude-val'>Some</span>(<span class='ident'>val</span>) <span class='op'>=&gt;</span> <span class='ident'>val</span>,
                            <span class='prelude-val'>None</span> <span class='op'>=&gt;</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>Error</span>::<span class='ident'>end_of_stream</span>()); }
                        };
                    )<span class='op'>+</span>;

                    <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>visitor</span>.<span class='ident'>end</span>());

                    <span class='prelude-val'>Ok</span>([$(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>,)<span class='op'>+</span>])
                }
            }

            <span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> [<span class='ident'>T</span>; <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>len</span>]
                <span class='kw'>where</span> <span class='ident'>T</span>: <span class='ident'>Deserialize</span>,
            {
                <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span>[<span class='ident'>T</span>; <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>len</span>], <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
                    <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
                {
                    <span class='ident'>deserializer</span>.<span class='ident'>visit_seq</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span>::<span class='ident'>new</span>())
                }
            }
        )<span class='op'>+</span>
    }
}

<span class='macro'>array_impls</span><span class='macro'>!</span> {
    <span class='ident'>ArrayVisitor1</span>, <span class='number'>1</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>),
    <span class='ident'>ArrayVisitor2</span>, <span class='number'>2</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>),
    <span class='ident'>ArrayVisitor3</span>, <span class='number'>3</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>),
    <span class='ident'>ArrayVisitor4</span>, <span class='number'>4</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>),
    <span class='ident'>ArrayVisitor5</span>, <span class='number'>5</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>),
    <span class='ident'>ArrayVisitor6</span>, <span class='number'>6</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>),
    <span class='ident'>ArrayVisitor7</span>, <span class='number'>7</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>),
    <span class='ident'>ArrayVisitor8</span>, <span class='number'>8</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>),
    <span class='ident'>ArrayVisitor9</span>, <span class='number'>9</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>),
    <span class='ident'>ArrayVisitor10</span>, <span class='number'>10</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>),
    <span class='ident'>ArrayVisitor11</span>, <span class='number'>11</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>),
    <span class='ident'>ArrayVisitor12</span>, <span class='number'>12</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>),
    <span class='ident'>ArrayVisitor13</span>, <span class='number'>13</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>),
    <span class='ident'>ArrayVisitor14</span>, <span class='number'>14</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>),
    <span class='ident'>ArrayVisitor15</span>, <span class='number'>15</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>),
    <span class='ident'>ArrayVisitor16</span>, <span class='number'>16</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>),
    <span class='ident'>ArrayVisitor17</span>, <span class='number'>17</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>, <span class='ident'>q</span>),
    <span class='ident'>ArrayVisitor18</span>, <span class='number'>18</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>, <span class='ident'>q</span>, <span class='ident'>r</span>),
    <span class='ident'>ArrayVisitor19</span>, <span class='number'>19</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>, <span class='ident'>q</span>, <span class='ident'>r</span>, <span class='ident'>s</span>),
    <span class='ident'>ArrayVisitor20</span>, <span class='number'>20</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>, <span class='ident'>q</span>, <span class='ident'>r</span>, <span class='ident'>s</span> ,<span class='ident'>t</span>),
    <span class='ident'>ArrayVisitor21</span>, <span class='number'>21</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>, <span class='ident'>q</span>, <span class='ident'>r</span>, <span class='ident'>s</span>, <span class='ident'>t</span>, <span class='ident'>u</span>),
    <span class='ident'>ArrayVisitor22</span>, <span class='number'>22</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>, <span class='ident'>q</span>, <span class='ident'>r</span>, <span class='ident'>s</span>, <span class='ident'>t</span>, <span class='ident'>u</span>, <span class='ident'>v</span>),
    <span class='ident'>ArrayVisitor23</span>, <span class='number'>23</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>, <span class='ident'>q</span>, <span class='ident'>r</span>, <span class='ident'>s</span>, <span class='ident'>t</span>, <span class='ident'>u</span>, <span class='ident'>v</span>, <span class='ident'>w</span>),
    <span class='ident'>ArrayVisitor24</span>, <span class='number'>24</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>, <span class='ident'>q</span>, <span class='ident'>r</span>, <span class='ident'>s</span>, <span class='ident'>t</span>, <span class='ident'>u</span>, <span class='ident'>v</span>, <span class='ident'>w</span>, <span class='ident'>x</span>),
    <span class='ident'>ArrayVisitor25</span>, <span class='number'>25</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>, <span class='ident'>q</span>, <span class='ident'>r</span>, <span class='ident'>s</span>, <span class='ident'>t</span>, <span class='ident'>u</span>, <span class='ident'>v</span>, <span class='ident'>w</span>, <span class='ident'>x</span>,
                           <span class='ident'>y</span>),
    <span class='ident'>ArrayVisitor26</span>, <span class='number'>26</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>, <span class='ident'>q</span>, <span class='ident'>r</span>, <span class='ident'>s</span>, <span class='ident'>t</span>, <span class='ident'>u</span>, <span class='ident'>v</span>, <span class='ident'>w</span>, <span class='ident'>x</span>,
                           <span class='ident'>y</span>, <span class='ident'>z</span>),
    <span class='ident'>ArrayVisitor27</span>, <span class='number'>27</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>, <span class='ident'>q</span>, <span class='ident'>r</span>, <span class='ident'>s</span>, <span class='ident'>t</span>, <span class='ident'>u</span>, <span class='ident'>v</span>, <span class='ident'>w</span>, <span class='ident'>x</span>,
                           <span class='ident'>y</span>, <span class='ident'>z</span>, <span class='ident'>aa</span>),
    <span class='ident'>ArrayVisitor28</span>, <span class='number'>28</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>, <span class='ident'>q</span>, <span class='ident'>r</span>, <span class='ident'>s</span>, <span class='ident'>t</span>, <span class='ident'>u</span>, <span class='ident'>v</span>, <span class='ident'>w</span>, <span class='ident'>x</span>,
                           <span class='ident'>y</span>, <span class='ident'>z</span>, <span class='ident'>aa</span>, <span class='ident'>ab</span>),
    <span class='ident'>ArrayVisitor29</span>, <span class='number'>29</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>, <span class='ident'>q</span>, <span class='ident'>r</span>, <span class='ident'>s</span>, <span class='ident'>t</span>, <span class='ident'>u</span>, <span class='ident'>v</span>, <span class='ident'>w</span>, <span class='ident'>x</span>,
                           <span class='ident'>y</span>, <span class='ident'>z</span>, <span class='ident'>aa</span>, <span class='ident'>ab</span>, <span class='ident'>ac</span>),
    <span class='ident'>ArrayVisitor30</span>, <span class='number'>30</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>, <span class='ident'>q</span>, <span class='ident'>r</span>, <span class='ident'>s</span>, <span class='ident'>t</span>, <span class='ident'>u</span>, <span class='ident'>v</span>, <span class='ident'>w</span>, <span class='ident'>x</span>,
                           <span class='ident'>y</span>, <span class='ident'>z</span>, <span class='ident'>aa</span>, <span class='ident'>ab</span>, <span class='ident'>ac</span>, <span class='ident'>ad</span>),
    <span class='ident'>ArrayVisitor31</span>, <span class='number'>31</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>, <span class='ident'>q</span>, <span class='ident'>r</span>, <span class='ident'>s</span>, <span class='ident'>t</span>, <span class='ident'>u</span>, <span class='ident'>v</span>, <span class='ident'>w</span>, <span class='ident'>x</span>,
                           <span class='ident'>y</span>, <span class='ident'>z</span>, <span class='ident'>aa</span>, <span class='ident'>ab</span>, <span class='ident'>ac</span>, <span class='ident'>ad</span>, <span class='ident'>ae</span>),
    <span class='ident'>ArrayVisitor32</span>, <span class='number'>32</span> <span class='op'>=&gt;</span> (<span class='ident'>a</span>, <span class='ident'>b</span>, <span class='ident'>c</span>, <span class='ident'>d</span>, <span class='ident'>e</span>, <span class='ident'>f</span>, <span class='ident'>g</span>, <span class='ident'>h</span>, <span class='ident'>i</span>, <span class='ident'>j</span>, <span class='ident'>k</span>, <span class='ident'>l</span>, <span class='ident'>m</span>, <span class='ident'>n</span>, <span class='ident'>o</span>, <span class='ident'>p</span>, <span class='ident'>q</span>, <span class='ident'>r</span>, <span class='ident'>s</span>, <span class='ident'>t</span>, <span class='ident'>u</span>, <span class='ident'>v</span>, <span class='ident'>w</span>, <span class='ident'>x</span>,
                           <span class='ident'>y</span>, <span class='ident'>z</span>, <span class='ident'>aa</span>, <span class='ident'>ab</span>, <span class='ident'>ac</span>, <span class='ident'>ad</span>, <span class='ident'>ae</span>, <span class='ident'>af</span>),
}

<span class='comment'>///////////////////////////////////////////////////////////////////////////////</span>

<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>tuple_impls</span> {
    () <span class='op'>=&gt;</span> {};
    ($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>len</span>:<span class='ident'>expr</span> <span class='op'>=&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span>:<span class='ident'>ident</span> <span class='op'>=&gt;</span> ($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>:<span class='ident'>ident</span>),<span class='op'>+</span>),)<span class='op'>+</span>) <span class='op'>=&gt;</span> {
        $(
            <span class='kw'>pub</span> <span class='kw'>struct</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span><span class='op'>&lt;</span>$(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>,)<span class='op'>+</span><span class='op'>&gt;</span> {
                <span class='ident'>marker</span>: <span class='ident'>PhantomData</span><span class='op'>&lt;</span>($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>,)<span class='op'>+</span>)<span class='op'>&gt;</span>,
            }

            <span class='kw'>impl</span><span class='op'>&lt;</span>
                $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>: <span class='ident'>Deserialize</span>,)<span class='op'>+</span>
            <span class='op'>&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span><span class='op'>&lt;</span>$(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>,)<span class='op'>+</span><span class='op'>&gt;</span> {
                <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>() <span class='op'>-&gt;</span> <span class='kw'>Self</span> {
                    <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span> { <span class='ident'>marker</span>: <span class='ident'>PhantomData</span> }
                }
            }


            <span class='kw'>impl</span><span class='op'>&lt;</span>
                $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>: <span class='ident'>Deserialize</span>,)<span class='op'>+</span>
            <span class='op'>&gt;</span> <span class='ident'>Visitor</span> <span class='kw'>for</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span><span class='op'>&lt;</span>$(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>,)<span class='op'>+</span><span class='op'>&gt;</span> {
                <span class='kw'>type</span> <span class='ident'>Value</span> <span class='op'>=</span> ($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>,)<span class='op'>+</span>);

                <span class='attribute'>#[<span class='ident'>inline</span>]</span>
                <span class='attribute'>#[<span class='ident'>allow</span>(<span class='ident'>non_snake_case</span>)]</span>
                <span class='kw'>fn</span> <span class='ident'>visit_seq</span><span class='op'>&lt;</span><span class='ident'>V</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='kw-2'>mut</span> <span class='ident'>visitor</span>: <span class='ident'>V</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span>($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>,)<span class='op'>+</span>), <span class='ident'>V</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
                    <span class='kw'>where</span> <span class='ident'>V</span>: <span class='ident'>SeqVisitor</span>,
                {
                    $(
                        <span class='kw'>let</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span> <span class='op'>=</span> <span class='kw'>match</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>visitor</span>.<span class='ident'>visit</span>()) {
                            <span class='prelude-val'>Some</span>(<span class='ident'>value</span>) <span class='op'>=&gt;</span> <span class='ident'>value</span>,
                            <span class='prelude-val'>None</span> <span class='op'>=&gt;</span> { <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>Error</span>::<span class='ident'>end_of_stream</span>()); }
                        };
                     )<span class='op'>+</span>;

                    <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>visitor</span>.<span class='ident'>end</span>());

                    <span class='prelude-val'>Ok</span>(($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>,)<span class='op'>+</span>))
                }
            }

            <span class='kw'>impl</span><span class='op'>&lt;</span>
                $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>: <span class='ident'>Deserialize</span>),<span class='op'>+</span>
            <span class='op'>&gt;</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> ($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>,)<span class='op'>+</span>) {
                <span class='attribute'>#[<span class='ident'>inline</span>]</span>
                <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span>($(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>name</span>,)<span class='op'>+</span>), <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
                    <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
                {
                    <span class='ident'>deserializer</span>.<span class='ident'>visit_tuple</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>len</span>, <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span>::<span class='ident'>new</span>())
                }
            }
        )<span class='op'>+</span>
    }
}

<span class='macro'>tuple_impls</span><span class='macro'>!</span> {
    <span class='number'>1</span> <span class='op'>=&gt;</span> <span class='ident'>TupleVisitor1</span> <span class='op'>=&gt;</span> (<span class='ident'>T0</span>),
    <span class='number'>2</span> <span class='op'>=&gt;</span> <span class='ident'>TupleVisitor2</span> <span class='op'>=&gt;</span> (<span class='ident'>T0</span>, <span class='ident'>T1</span>),
    <span class='number'>3</span> <span class='op'>=&gt;</span> <span class='ident'>TupleVisitor3</span> <span class='op'>=&gt;</span> (<span class='ident'>T0</span>, <span class='ident'>T1</span>, <span class='ident'>T2</span>),
    <span class='number'>4</span> <span class='op'>=&gt;</span> <span class='ident'>TupleVisitor4</span> <span class='op'>=&gt;</span> (<span class='ident'>T0</span>, <span class='ident'>T1</span>, <span class='ident'>T2</span>, <span class='ident'>T3</span>),
    <span class='number'>5</span> <span class='op'>=&gt;</span> <span class='ident'>TupleVisitor5</span> <span class='op'>=&gt;</span> (<span class='ident'>T0</span>, <span class='ident'>T1</span>, <span class='ident'>T2</span>, <span class='ident'>T3</span>, <span class='ident'>T4</span>),
    <span class='number'>6</span> <span class='op'>=&gt;</span> <span class='ident'>TupleVisitor6</span> <span class='op'>=&gt;</span> (<span class='ident'>T0</span>, <span class='ident'>T1</span>, <span class='ident'>T2</span>, <span class='ident'>T3</span>, <span class='ident'>T4</span>, <span class='ident'>T5</span>),
    <span class='number'>7</span> <span class='op'>=&gt;</span> <span class='ident'>TupleVisitor7</span> <span class='op'>=&gt;</span> (<span class='ident'>T0</span>, <span class='ident'>T1</span>, <span class='ident'>T2</span>, <span class='ident'>T3</span>, <span class='ident'>T4</span>, <span class='ident'>T5</span>, <span class='ident'>T6</span>),
    <span class='number'>8</span> <span class='op'>=&gt;</span> <span class='ident'>TupleVisitor8</span> <span class='op'>=&gt;</span> (<span class='ident'>T0</span>, <span class='ident'>T1</span>, <span class='ident'>T2</span>, <span class='ident'>T3</span>, <span class='ident'>T4</span>, <span class='ident'>T5</span>, <span class='ident'>T6</span>, <span class='ident'>T7</span>),
    <span class='number'>9</span> <span class='op'>=&gt;</span> <span class='ident'>TupleVisitor9</span> <span class='op'>=&gt;</span> (<span class='ident'>T0</span>, <span class='ident'>T1</span>, <span class='ident'>T2</span>, <span class='ident'>T3</span>, <span class='ident'>T4</span>, <span class='ident'>T5</span>, <span class='ident'>T6</span>, <span class='ident'>T7</span>, <span class='ident'>T8</span>),
    <span class='number'>10</span> <span class='op'>=&gt;</span> <span class='ident'>TupleVisitor10</span> <span class='op'>=&gt;</span> (<span class='ident'>T0</span>, <span class='ident'>T1</span>, <span class='ident'>T2</span>, <span class='ident'>T3</span>, <span class='ident'>T4</span>, <span class='ident'>T5</span>, <span class='ident'>T6</span>, <span class='ident'>T7</span>, <span class='ident'>T8</span>, <span class='ident'>T9</span>),
    <span class='number'>11</span> <span class='op'>=&gt;</span> <span class='ident'>TupleVisitor11</span> <span class='op'>=&gt;</span> (<span class='ident'>T0</span>, <span class='ident'>T1</span>, <span class='ident'>T2</span>, <span class='ident'>T3</span>, <span class='ident'>T4</span>, <span class='ident'>T5</span>, <span class='ident'>T6</span>, <span class='ident'>T7</span>, <span class='ident'>T8</span>, <span class='ident'>T9</span>, <span class='ident'>T10</span>),
    <span class='number'>12</span> <span class='op'>=&gt;</span> <span class='ident'>TupleVisitor12</span> <span class='op'>=&gt;</span> (<span class='ident'>T0</span>, <span class='ident'>T1</span>, <span class='ident'>T2</span>, <span class='ident'>T3</span>, <span class='ident'>T4</span>, <span class='ident'>T5</span>, <span class='ident'>T6</span>, <span class='ident'>T7</span>, <span class='ident'>T8</span>, <span class='ident'>T9</span>, <span class='ident'>T10</span>, <span class='ident'>T11</span>),
}

<span class='comment'>///////////////////////////////////////////////////////////////////////////////</span>

<span class='macro'>macro_rules</span><span class='macro'>!</span> <span class='ident'>map_impl</span> {
    (
        <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>:<span class='ident'>ty</span>,
        <span class='op'>&lt;</span> $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>constraints</span>:<span class='ident'>ident</span>),<span class='op'>*</span> <span class='op'>&gt;</span>,
        <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor_name</span>:<span class='ident'>ident</span>,
        <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span>:<span class='ident'>ident</span>,
        <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ctor</span>:<span class='ident'>expr</span>,
        <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>with_capacity</span>:<span class='ident'>expr</span>,
        <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>insert</span>:<span class='ident'>expr</span>
    ) <span class='op'>=&gt;</span> {
        <span class='kw'>pub</span> <span class='kw'>struct</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor_name</span><span class='op'>&lt;</span><span class='ident'>K</span>, <span class='ident'>V</span><span class='op'>&gt;</span> {
            <span class='ident'>marker</span>: <span class='ident'>PhantomData</span><span class='op'>&lt;</span><span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span><span class='op'>&gt;</span>,
        }

        <span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>K</span>, <span class='ident'>V</span><span class='op'>&gt;</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor_name</span><span class='op'>&lt;</span><span class='ident'>K</span>, <span class='ident'>V</span><span class='op'>&gt;</span> {
            <span class='kw'>pub</span> <span class='kw'>fn</span> <span class='ident'>new</span>() <span class='op'>-&gt;</span> <span class='kw'>Self</span> {
                <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor_name</span> {
                    <span class='ident'>marker</span>: <span class='ident'>PhantomData</span>,
                }
            }
        }

        <span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>K</span>, <span class='ident'>V</span><span class='op'>&gt;</span> <span class='ident'>Visitor</span> <span class='kw'>for</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor_name</span><span class='op'>&lt;</span><span class='ident'>K</span>, <span class='ident'>V</span><span class='op'>&gt;</span>
            <span class='kw'>where</span> <span class='ident'>K</span>: $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>constraints</span> <span class='op'>+</span>)<span class='op'>*</span>,
                  <span class='ident'>V</span>: <span class='ident'>Deserialize</span>,
        {
            <span class='kw'>type</span> <span class='ident'>Value</span> <span class='op'>=</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>;

            <span class='attribute'>#[<span class='ident'>inline</span>]</span>
            <span class='kw'>fn</span> <span class='ident'>visit_unit</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>, <span class='ident'>E</span><span class='op'>&gt;</span>
                <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
            {
                <span class='prelude-val'>Ok</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ctor</span>)
            }

            <span class='attribute'>#[<span class='ident'>inline</span>]</span>
            <span class='kw'>fn</span> <span class='ident'>visit_map</span><span class='op'>&lt;</span><span class='ident'>Visitor</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='kw-2'>mut</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span>: <span class='ident'>Visitor</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>, <span class='ident'>Visitor</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
                <span class='kw'>where</span> <span class='ident'>Visitor</span>: <span class='ident'>MapVisitor</span>,
            {
                <span class='kw'>let</span> <span class='kw-2'>mut</span> <span class='ident'>values</span> <span class='op'>=</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>with_capacity</span>;

                <span class='kw'>while</span> <span class='kw'>let</span> <span class='prelude-val'>Some</span>((<span class='ident'>key</span>, <span class='ident'>value</span>)) <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span>.<span class='ident'>visit</span>()) {
                    <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>insert</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>values</span>, <span class='ident'>key</span>, <span class='ident'>value</span>);
                }

                <span class='macro'>try</span><span class='macro'>!</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor</span>.<span class='ident'>end</span>());

                <span class='prelude-val'>Ok</span>(<span class='ident'>values</span>)
            }
        }

        <span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>K</span>, <span class='ident'>V</span><span class='op'>&gt;</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> <span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>
            <span class='kw'>where</span> <span class='ident'>K</span>: $(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>constraints</span> <span class='op'>+</span>)<span class='op'>*</span>,
                  <span class='ident'>V</span>: <span class='ident'>Deserialize</span>,
        {
            <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>ty</span>, <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
                <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
            {
                <span class='ident'>deserializer</span>.<span class='ident'>visit_map</span>(<span class='macro-nonterminal'>$</span><span class='macro-nonterminal'>visitor_name</span>::<span class='ident'>new</span>())
            }
        }
    }
}

<span class='macro'>map_impl</span><span class='macro'>!</span>(
    <span class='ident'>BTreeMap</span><span class='op'>&lt;</span><span class='ident'>K</span>, <span class='ident'>V</span><span class='op'>&gt;</span>,
    <span class='op'>&lt;</span><span class='ident'>Deserialize</span>, <span class='ident'>Eq</span>, <span class='ident'>Ord</span><span class='op'>&gt;</span>,
    <span class='ident'>BTreeMapVisitor</span>,
    <span class='ident'>visitor</span>,
    <span class='ident'>BTreeMap</span>::<span class='ident'>new</span>(),
    <span class='ident'>BTreeMap</span>::<span class='ident'>new</span>(),
    <span class='ident'>BTreeMap</span>::<span class='ident'>insert</span>);

<span class='macro'>map_impl</span><span class='macro'>!</span>(
    <span class='ident'>HashMap</span><span class='op'>&lt;</span><span class='ident'>K</span>, <span class='ident'>V</span><span class='op'>&gt;</span>,
    <span class='op'>&lt;</span><span class='ident'>Deserialize</span>, <span class='ident'>Eq</span>, <span class='ident'>Hash</span><span class='op'>&gt;</span>,
    <span class='ident'>HashMapVisitor</span>,
    <span class='ident'>visitor</span>,
    <span class='ident'>HashMap</span>::<span class='ident'>new</span>(),
    <span class='ident'>HashMap</span>::<span class='ident'>with_capacity</span>(<span class='ident'>visitor</span>.<span class='ident'>size_hint</span>().<span class='number'>0</span>),
    <span class='ident'>HashMap</span>::<span class='ident'>insert</span>);

<span class='comment'>///////////////////////////////////////////////////////////////////////////////</span>

<span class='kw'>struct</span> <span class='ident'>PathBufVisitor</span>;

<span class='kw'>impl</span> <span class='ident'>Visitor</span> <span class='kw'>for</span> <span class='ident'>PathBufVisitor</span> {
    <span class='kw'>type</span> <span class='ident'>Value</span> <span class='op'>=</span> <span class='ident'>path</span>::<span class='ident'>PathBuf</span>;

    <span class='kw'>fn</span> <span class='ident'>visit_str</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='kw-2'>&amp;</span><span class='ident'>str</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>path</span>::<span class='ident'>PathBuf</span>, <span class='ident'>E</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
    {
        <span class='prelude-val'>Ok</span>(<span class='ident'>From</span>::<span class='ident'>from</span>(<span class='ident'>v</span>))
    }

    <span class='kw'>fn</span> <span class='ident'>visit_string</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>v</span>: <span class='ident'>String</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>path</span>::<span class='ident'>PathBuf</span>, <span class='ident'>E</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span>,
    {
        <span class='self'>self</span>.<span class='ident'>visit_str</span>(<span class='kw-2'>&amp;</span><span class='ident'>v</span>)
    }
}

<span class='kw'>impl</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> <span class='ident'>path</span>::<span class='ident'>PathBuf</span> {
    <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>path</span>::<span class='ident'>PathBuf</span>, <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
    {
        <span class='ident'>deserializer</span>.<span class='ident'>visit</span>(<span class='ident'>PathBufVisitor</span>)
    }
}

<span class='comment'>///////////////////////////////////////////////////////////////////////////////</span>

<span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span>: <span class='ident'>Deserialize</span><span class='op'>&gt;</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> <span class='ident'>Box</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> {
    <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>Box</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>, <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
    {
        <span class='kw'>let</span> <span class='ident'>val</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>Deserialize</span>::<span class='ident'>deserialize</span>(<span class='ident'>deserializer</span>));
        <span class='prelude-val'>Ok</span>(<span class='ident'>Box</span>::<span class='ident'>new</span>(<span class='ident'>val</span>))
    }
}

<span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span>: <span class='ident'>Deserialize</span><span class='op'>&gt;</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> <span class='ident'>Arc</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> {
    <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>Arc</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>, <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
    {
        <span class='kw'>let</span> <span class='ident'>val</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>Deserialize</span>::<span class='ident'>deserialize</span>(<span class='ident'>deserializer</span>));
        <span class='prelude-val'>Ok</span>(<span class='ident'>Arc</span>::<span class='ident'>new</span>(<span class='ident'>val</span>))
    }
}

<span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span>: <span class='ident'>Deserialize</span><span class='op'>&gt;</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> <span class='ident'>Rc</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> {
    <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>Rc</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>, <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
    {
        <span class='kw'>let</span> <span class='ident'>val</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>Deserialize</span>::<span class='ident'>deserialize</span>(<span class='ident'>deserializer</span>));
        <span class='prelude-val'>Ok</span>(<span class='ident'>Rc</span>::<span class='ident'>new</span>(<span class='ident'>val</span>))
    }
}

<span class='kw'>impl</span><span class='op'>&lt;</span><span class='lifetime'>&#39;a</span>, <span class='ident'>T</span>: ?<span class='ident'>Sized</span><span class='op'>&gt;</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> <span class='ident'>Cow</span><span class='op'>&lt;</span><span class='lifetime'>&#39;a</span>, <span class='ident'>T</span><span class='op'>&gt;</span> <span class='kw'>where</span> <span class='ident'>T</span>: <span class='ident'>ToOwned</span>, <span class='ident'>T</span>::<span class='ident'>Owned</span>: <span class='ident'>Deserialize</span>, {
    <span class='attribute'>#[<span class='ident'>inline</span>]</span>
    <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>Cow</span><span class='op'>&lt;</span><span class='lifetime'>&#39;a</span>, <span class='ident'>T</span><span class='op'>&gt;</span>, <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
        <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>,
    {
        <span class='kw'>let</span> <span class='ident'>val</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>Deserialize</span>::<span class='ident'>deserialize</span>(<span class='ident'>deserializer</span>));
        <span class='prelude-val'>Ok</span>(<span class='ident'>Cow</span>::<span class='ident'>Owned</span>(<span class='ident'>val</span>))
    }
}

<span class='comment'>///////////////////////////////////////////////////////////////////////////////</span>

<span class='attribute'>#[<span class='ident'>cfg</span>(<span class='ident'>feature</span> <span class='op'>=</span> <span class='string'>&quot;nightly&quot;</span>)]</span>
<span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> <span class='ident'>NonZero</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span> <span class='kw'>where</span> <span class='ident'>T</span>: <span class='ident'>Deserialize</span> <span class='op'>+</span> <span class='ident'>PartialEq</span> <span class='op'>+</span> <span class='ident'>Zeroable</span> <span class='op'>+</span> <span class='ident'>Zero</span> {
    <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>NonZero</span><span class='op'>&lt;</span><span class='ident'>T</span><span class='op'>&gt;</span>, <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span> <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span> {
        <span class='kw'>let</span> <span class='ident'>value</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>Deserialize</span>::<span class='ident'>deserialize</span>(<span class='ident'>deserializer</span>));
        <span class='kw'>if</span> <span class='ident'>value</span> <span class='op'>==</span> <span class='ident'>Zero</span>::<span class='ident'>zero</span>() {
            <span class='kw'>return</span> <span class='prelude-val'>Err</span>(<span class='ident'>Error</span>::<span class='ident'>syntax</span>(<span class='string'>&quot;expected a non-zero value&quot;</span>))
        }
        <span class='kw'>unsafe</span> {
            <span class='prelude-val'>Ok</span>(<span class='ident'>NonZero</span>::<span class='ident'>new</span>(<span class='ident'>value</span>))
        }
    }
}

<span class='comment'>///////////////////////////////////////////////////////////////////////////////</span>


<span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span>, <span class='ident'>E</span><span class='op'>&gt;</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>T</span>, <span class='ident'>E</span><span class='op'>&gt;</span> <span class='kw'>where</span> <span class='ident'>T</span>: <span class='ident'>Deserialize</span>, <span class='ident'>E</span>: <span class='ident'>Deserialize</span> {
    <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>T</span>, <span class='ident'>E</span><span class='op'>&gt;</span>, <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
                      <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span> {
        <span class='kw'>enum</span> <span class='ident'>Field</span> {
            <span class='prelude-val'>Ok</span>,
            <span class='prelude-val'>Err</span>,
        }

        <span class='kw'>impl</span> <span class='ident'>Deserialize</span> <span class='kw'>for</span> <span class='ident'>Field</span> {
            <span class='attribute'>#[<span class='ident'>inline</span>]</span>
            <span class='kw'>fn</span> <span class='ident'>deserialize</span><span class='op'>&lt;</span><span class='ident'>D</span><span class='op'>&gt;</span>(<span class='ident'>deserializer</span>: <span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='ident'>D</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>Field</span>, <span class='ident'>D</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
                <span class='kw'>where</span> <span class='ident'>D</span>: <span class='ident'>Deserializer</span>
            {
                <span class='kw'>struct</span> <span class='ident'>FieldVisitor</span>;

                <span class='kw'>impl</span> ::<span class='ident'>de</span>::<span class='ident'>Visitor</span> <span class='kw'>for</span> <span class='ident'>FieldVisitor</span> {
                    <span class='kw'>type</span> <span class='ident'>Value</span> <span class='op'>=</span> <span class='ident'>Field</span>;

                    <span class='kw'>fn</span> <span class='ident'>visit_usize</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>value</span>: <span class='ident'>usize</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>Field</span>, <span class='ident'>E</span><span class='op'>&gt;</span> <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span> {
                        <span class='kw'>match</span> <span class='ident'>value</span> {
                            <span class='number'>0</span> <span class='op'>=&gt;</span> <span class='prelude-val'>Ok</span>(<span class='ident'>Field</span>::<span class='prelude-val'>Ok</span>),
                            <span class='number'>1</span> <span class='op'>=&gt;</span> <span class='prelude-val'>Ok</span>(<span class='ident'>Field</span>::<span class='prelude-val'>Err</span>),
                            _ <span class='op'>=&gt;</span> <span class='prelude-val'>Err</span>(<span class='ident'>Error</span>::<span class='ident'>unknown_field</span>(<span class='kw-2'>&amp;</span><span class='ident'>value</span>.<span class='ident'>to_string</span>())),
                        }
                    }

                    <span class='kw'>fn</span> <span class='ident'>visit_str</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>value</span>: <span class='kw-2'>&amp;</span><span class='ident'>str</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>Field</span>, <span class='ident'>E</span><span class='op'>&gt;</span> <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span> {
                        <span class='kw'>match</span> <span class='ident'>value</span> {
                            <span class='string'>&quot;Ok&quot;</span> <span class='op'>=&gt;</span> <span class='prelude-val'>Ok</span>(<span class='ident'>Field</span>::<span class='prelude-val'>Ok</span>),
                            <span class='string'>&quot;Err&quot;</span> <span class='op'>=&gt;</span> <span class='prelude-val'>Ok</span>(<span class='ident'>Field</span>::<span class='prelude-val'>Err</span>),
                            _ <span class='op'>=&gt;</span> <span class='prelude-val'>Err</span>(<span class='ident'>Error</span>::<span class='ident'>unknown_field</span>(<span class='ident'>value</span>)),
                        }
                    }

                    <span class='kw'>fn</span> <span class='ident'>visit_bytes</span><span class='op'>&lt;</span><span class='ident'>E</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='ident'>value</span>: <span class='kw-2'>&amp;</span>[<span class='ident'>u8</span>]) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>Field</span>, <span class='ident'>E</span><span class='op'>&gt;</span> <span class='kw'>where</span> <span class='ident'>E</span>: <span class='ident'>Error</span> {
                        <span class='kw'>match</span> <span class='ident'>value</span> {
                            <span class='string'>b&quot;Ok&quot;</span> <span class='op'>=&gt;</span> <span class='prelude-val'>Ok</span>(<span class='ident'>Field</span>::<span class='prelude-val'>Ok</span>),
                            <span class='string'>b&quot;Err&quot;</span> <span class='op'>=&gt;</span> <span class='prelude-val'>Ok</span>(<span class='ident'>Field</span>::<span class='prelude-val'>Err</span>),
                            _ <span class='op'>=&gt;</span> {
                                <span class='kw'>match</span> <span class='ident'>str</span>::<span class='ident'>from_utf8</span>(<span class='ident'>value</span>) {
                                    <span class='prelude-val'>Ok</span>(<span class='ident'>value</span>) <span class='op'>=&gt;</span> <span class='prelude-val'>Err</span>(<span class='ident'>Error</span>::<span class='ident'>unknown_field</span>(<span class='ident'>value</span>)),
                                    <span class='prelude-val'>Err</span>(_) <span class='op'>=&gt;</span> <span class='prelude-val'>Err</span>(<span class='ident'>Error</span>::<span class='ident'>type_mismatch</span>(<span class='ident'>Type</span>::<span class='ident'>String</span>)),
                                }
                            }
                        }
                    }
                }

                <span class='ident'>deserializer</span>.<span class='ident'>visit</span>(<span class='ident'>FieldVisitor</span>)
            }
        }

        <span class='kw'>struct</span> <span class='ident'>Visitor</span><span class='op'>&lt;</span><span class='ident'>T</span>, <span class='ident'>E</span><span class='op'>&gt;</span>(<span class='ident'>PhantomData</span><span class='op'>&lt;</span><span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>T</span>, <span class='ident'>E</span><span class='op'>&gt;&gt;</span>);

        <span class='kw'>impl</span><span class='op'>&lt;</span><span class='ident'>T</span>, <span class='ident'>E</span><span class='op'>&gt;</span> <span class='ident'>EnumVisitor</span> <span class='kw'>for</span> <span class='ident'>Visitor</span><span class='op'>&lt;</span><span class='ident'>T</span>, <span class='ident'>E</span><span class='op'>&gt;</span>
            <span class='kw'>where</span> <span class='ident'>T</span>: <span class='ident'>Deserialize</span>,
                  <span class='ident'>E</span>: <span class='ident'>Deserialize</span>
        {
            <span class='kw'>type</span> <span class='ident'>Value</span> <span class='op'>=</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>T</span>, <span class='ident'>E</span><span class='op'>&gt;</span>;

            <span class='kw'>fn</span> <span class='ident'>visit</span><span class='op'>&lt;</span><span class='ident'>V</span><span class='op'>&gt;</span>(<span class='kw-2'>&amp;</span><span class='kw-2'>mut</span> <span class='self'>self</span>, <span class='kw-2'>mut</span> <span class='ident'>visitor</span>: <span class='ident'>V</span>) <span class='op'>-&gt;</span> <span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='prelude-ty'>Result</span><span class='op'>&lt;</span><span class='ident'>T</span>, <span class='ident'>E</span><span class='op'>&gt;</span>, <span class='ident'>V</span>::<span class='ident'>Error</span><span class='op'>&gt;</span>
                <span class='kw'>where</span> <span class='ident'>V</span>: <span class='ident'>VariantVisitor</span>
            {
                <span class='kw'>match</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>visitor</span>.<span class='ident'>visit_variant</span>()) {
                    <span class='ident'>Field</span>::<span class='prelude-val'>Ok</span> <span class='op'>=&gt;</span> {
                        <span class='kw'>let</span> <span class='ident'>value</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>visitor</span>.<span class='ident'>visit_newtype</span>());
                        <span class='prelude-val'>Ok</span>(<span class='prelude-val'>Ok</span>(<span class='ident'>value</span>))
                    }
                    <span class='ident'>Field</span>::<span class='prelude-val'>Err</span> <span class='op'>=&gt;</span> {
                        <span class='kw'>let</span> <span class='ident'>value</span> <span class='op'>=</span> <span class='macro'>try</span><span class='macro'>!</span>(<span class='ident'>visitor</span>.<span class='ident'>visit_newtype</span>());
                        <span class='prelude-val'>Ok</span>(<span class='prelude-val'>Err</span>(<span class='ident'>value</span>))
                    }
                }
            }
        }

        <span class='kw'>const</span> <span class='ident'>VARIANTS</span>: <span class='kw-2'>&amp;</span><span class='lifetime'>&#39;static</span> [<span class='kw-2'>&amp;</span><span class='lifetime'>&#39;static</span> <span class='ident'>str</span>] <span class='op'>=</span> <span class='kw-2'>&amp;</span>[<span class='string'>&quot;Ok&quot;</span>, <span class='string'>&quot;Err&quot;</span>];

        <span class='ident'>deserializer</span>.<span class='ident'>visit_enum</span>(<span class='string'>&quot;Result&quot;</span>, <span class='ident'>VARIANTS</span>, <span class='ident'>Visitor</span>(<span class='ident'>PhantomData</span>))
    }
}
</pre>
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