text: // Copyright 2020 The Tint Authors.
  //
  // Licensed under the Apache License, Version 2.0 (the "License");
  // you may not use this file except in compliance with the License.
  // You may obtain a copy of the License at
  //
  //     http://www.apache.org/licenses/LICENSE-2.0
  //
  // Unless required by applicable law or agreed to in writing, software
  // distributed under the License is distributed on an "AS IS" BASIS,
  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  // See the License for the specific language governing permissions and
  // limitations under the License.
  
  #include "src/tint/reader/wgsl/parser_impl_test_helper.h"
  
  namespace tint::reader::wgsl {
  namespace {
  
  TEST_F(ParserImplTest, ParamList_Single) {
      auto p = parser("a : i32");
  
      auto e = p->expect_param_list();
      ASSERT_FALSE(p->has_error()) << p->error();
      ASSERT_FALSE(e.errored);
      EXPECT_EQ(e.value.size(), 1u);
  
      EXPECT_EQ(e.value[0]->symbol, p->builder().Symbols().Get("a"));
      EXPECT_TRUE(e.value[0]->type->Is<ast::I32>());
      EXPECT_TRUE(e.value[0]->is_const);
  
      ASSERT_EQ(e.value[0]->source.range.begin.line, 1u);
      ASSERT_EQ(e.value[0]->source.range.begin.column, 1u);
      ASSERT_EQ(e.value[0]->source.range.end.line, 1u);
      ASSERT_EQ(e.value[0]->source.range.end.column, 2u);
  }
  
  TEST_F(ParserImplTest, ParamList_Multiple) {
      auto p = parser("a : i32, b: f32, c: vec2<f32>");
  
      auto e = p->expect_param_list();
      ASSERT_FALSE(p->has_error()) << p->error();
      ASSERT_FALSE(e.errored);
      EXPECT_EQ(e.value.size(), 3u);
  
      EXPECT_EQ(e.value[0]->symbol, p->builder().Symbols().Get("a"));
      EXPECT_TRUE(e.value[0]->type->Is<ast::I32>());
      EXPECT_TRUE(e.value[0]->is_const);
  
      ASSERT_EQ(e.value[0]->source.range.begin.line, 1u);
      ASSERT_EQ(e.value[0]->source.range.begin.column, 1u);
      ASSERT_EQ(e.value[0]->source.range.end.line, 1u);
      ASSERT_EQ(e.value[0]->source.range.end.column, 2u);
  
      EXPECT_EQ(e.value[1]->symbol, p->builder().Symbols().Get("b"));
      EXPECT_TRUE(e.value[1]->type->Is<ast::F32>());
      EXPECT_TRUE(e.value[1]->is_const);
  
      ASSERT_EQ(e.value[1]->source.range.begin.line, 1u);
      ASSERT_EQ(e.value[1]->source.range.begin.column, 10u);
      ASSERT_EQ(e.value[1]->source.range.end.line, 1u);
      ASSERT_EQ(e.value[1]->source.range.end.column, 11u);
  
      EXPECT_EQ(e.value[2]->symbol, p->builder().Symbols().Get("c"));
      ASSERT_TRUE(e.value[2]->type->Is<ast::Vector>());
      ASSERT_TRUE(e.value[2]->type->As<ast::Vector>()->type->Is<ast::F32>());
      EXPECT_EQ(e.value[2]->type->As<ast::Vector>()->width, 2u);
      EXPECT_TRUE(e.value[2]->is_const);
  
      ASSERT_EQ(e.value[2]->source.range.begin.line, 1u);
      ASSERT_EQ(e.value[2]->source.range.begin.column, 18u);
      ASSERT_EQ(e.value[2]->source.range.end.line, 1u);
      ASSERT_EQ(e.value[2]->source.range.end.column, 19u);
  }
  
  TEST_F(ParserImplTest, ParamList_Empty) {
      auto p = parser("");
      auto e = p->expect_param_list();
      ASSERT_FALSE(p->has_error());
      ASSERT_FALSE(e.errored);
      EXPECT_EQ(e.value.size(), 0u);
  }
  
  TEST_F(ParserImplTest, ParamList_TrailingComma) {
      auto p = parser("a : i32,");
      auto e = p->expect_param_list();
      ASSERT_FALSE(p->has_error());
      ASSERT_FALSE(e.errored);
      EXPECT_EQ(e.value.size(), 1u);
  }
  
  TEST_F(ParserImplTest, ParamList_Attributes) {
      auto p = parser("@builtin(position) coord : vec4<f32>, @location(1) loc1 : f32");
  
      auto e = p->expect_param_list();
      ASSERT_FALSE(p->has_error()) << p->error();
      ASSERT_FALSE(e.errored);
      ASSERT_EQ(e.value.size(), 2u);
  
      EXPECT_EQ(e.value[0]->symbol, p->builder().Symbols().Get("coord"));
      ASSERT_TRUE(e.value[0]->type->Is<ast::Vector>());
      EXPECT_TRUE(e.value[0]->type->As<ast::Vector>()->type->Is<ast::F32>());
      EXPECT_EQ(e.value[0]->type->As<ast::Vector>()->width, 4u);
      EXPECT_TRUE(e.value[0]->is_const);
      auto attrs_0 = e.value[0]->attributes;
      ASSERT_EQ(attrs_0.size(), 1u);
      EXPECT_TRUE(attrs_0[0]->Is<ast::BuiltinAttribute>());
      EXPECT_EQ(attrs_0[0]->As<ast::BuiltinAttribute>()->builtin, ast::Builtin::kPosition);
  
      ASSERT_EQ(e.value[0]->source.range.begin.line, 1u);
      ASSERT_EQ(e.value[0]->source.range.begin.column, 20u);
      ASSERT_EQ(e.value[0]->source.range.end.line, 1u);
      ASSERT_EQ(e.value[0]->source.range.end.column, 25u);
  
      EXPECT_EQ(e.value[1]->symbol, p->builder().Symbols().Get("loc1"));
      EXPECT_TRUE(e.value[1]->type->Is<ast::F32>());
      EXPECT_TRUE(e.value[1]->is_const);
      auto attrs_1 = e.value[1]->attributes;
      ASSERT_EQ(attrs_1.size(), 1u);
      EXPECT_TRUE(attrs_1[0]->Is<ast::LocationAttribute>());
      EXPECT_EQ(attrs_1[0]->As<ast::LocationAttribute>()->value, 1u);
  
      EXPECT_EQ(e.value[1]->source.range.begin.line, 1u);
      EXPECT_EQ(e.value[1]->source.range.begin.column, 52u);
      EXPECT_EQ(e.value[1]->source.range.end.line, 1u);
      EXPECT_EQ(e.value[1]->source.range.end.column, 56u);
  }
  
  }  // namespace
  }  // namespace tint::reader::wgsl
  