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/ast/stage_attribute.h"
  #include "src/tint/ast/workgroup_attribute.h"
  #include "src/tint/reader/wgsl/parser_impl_test_helper.h"
  
  namespace tint::reader::wgsl {
  namespace {
  
  TEST_F(ParserImplTest, Attribute_Workgroup) {
      auto p = parser("workgroup_size(4)");
      auto attr = p->attribute();
      EXPECT_TRUE(attr.matched);
      EXPECT_FALSE(attr.errored);
      ASSERT_NE(attr.value, nullptr) << p->error();
      ASSERT_FALSE(p->has_error());
      auto* func_attr = attr.value->As<ast::Attribute>();
      ASSERT_NE(func_attr, nullptr);
      ASSERT_TRUE(func_attr->Is<ast::WorkgroupAttribute>());
  
      auto values = func_attr->As<ast::WorkgroupAttribute>()->Values();
  
      ASSERT_TRUE(values[0]->Is<ast::IntLiteralExpression>());
      EXPECT_EQ(values[0]->As<ast::IntLiteralExpression>()->value, 4);
      EXPECT_EQ(values[0]->As<ast::IntLiteralExpression>()->suffix,
                ast::IntLiteralExpression::Suffix::kNone);
  
      EXPECT_EQ(values[1], nullptr);
      EXPECT_EQ(values[2], nullptr);
  }
  
  TEST_F(ParserImplTest, Attribute_Workgroup_2Param) {
      auto p = parser("workgroup_size(4, 5)");
      auto attr = p->attribute();
      EXPECT_TRUE(attr.matched);
      EXPECT_FALSE(attr.errored);
      ASSERT_NE(attr.value, nullptr) << p->error();
      ASSERT_FALSE(p->has_error());
      auto* func_attr = attr.value->As<ast::Attribute>();
      ASSERT_NE(func_attr, nullptr) << p->error();
      ASSERT_TRUE(func_attr->Is<ast::WorkgroupAttribute>());
  
      auto values = func_attr->As<ast::WorkgroupAttribute>()->Values();
  
      ASSERT_TRUE(values[0]->Is<ast::IntLiteralExpression>());
      EXPECT_EQ(values[0]->As<ast::IntLiteralExpression>()->value, 4);
      EXPECT_EQ(values[0]->As<ast::IntLiteralExpression>()->suffix,
                ast::IntLiteralExpression::Suffix::kNone);
  
      ASSERT_TRUE(values[1]->Is<ast::IntLiteralExpression>());
      EXPECT_EQ(values[1]->As<ast::IntLiteralExpression>()->value, 5);
      EXPECT_EQ(values[1]->As<ast::IntLiteralExpression>()->suffix,
                ast::IntLiteralExpression::Suffix::kNone);
  
      EXPECT_EQ(values[2], nullptr);
  }
  
  TEST_F(ParserImplTest, Attribute_Workgroup_3Param) {
      auto p = parser("workgroup_size(4, 5, 6)");
      auto attr = p->attribute();
      EXPECT_TRUE(attr.matched);
      EXPECT_FALSE(attr.errored);
      ASSERT_NE(attr.value, nullptr) << p->error();
      ASSERT_FALSE(p->has_error());
      auto* func_attr = attr.value->As<ast::Attribute>();
      ASSERT_NE(func_attr, nullptr);
      ASSERT_TRUE(func_attr->Is<ast::WorkgroupAttribute>());
  
      auto values = func_attr->As<ast::WorkgroupAttribute>()->Values();
  
      ASSERT_TRUE(values[0]->Is<ast::IntLiteralExpression>());
      EXPECT_EQ(values[0]->As<ast::IntLiteralExpression>()->value, 4);
      EXPECT_EQ(values[0]->As<ast::IntLiteralExpression>()->suffix,
                ast::IntLiteralExpression::Suffix::kNone);
  
      ASSERT_TRUE(values[1]->Is<ast::IntLiteralExpression>());
      EXPECT_EQ(values[1]->As<ast::IntLiteralExpression>()->value, 5);
      EXPECT_EQ(values[1]->As<ast::IntLiteralExpression>()->suffix,
                ast::IntLiteralExpression::Suffix::kNone);
  
      ASSERT_TRUE(values[2]->Is<ast::IntLiteralExpression>());
      EXPECT_EQ(values[2]->As<ast::IntLiteralExpression>()->value, 6);
      EXPECT_EQ(values[2]->As<ast::IntLiteralExpression>()->suffix,
                ast::IntLiteralExpression::Suffix::kNone);
  }
  
  TEST_F(ParserImplTest, Attribute_Workgroup_WithIdent) {
      auto p = parser("workgroup_size(4, height)");
      auto attr = p->attribute();
      EXPECT_TRUE(attr.matched);
      EXPECT_FALSE(attr.errored);
      ASSERT_NE(attr.value, nullptr) << p->error();
      ASSERT_FALSE(p->has_error());
      auto* func_attr = attr.value->As<ast::Attribute>();
      ASSERT_NE(func_attr, nullptr);
      ASSERT_TRUE(func_attr->Is<ast::WorkgroupAttribute>());
  
      auto values = func_attr->As<ast::WorkgroupAttribute>()->Values();
  
      ASSERT_TRUE(values[0]->Is<ast::IntLiteralExpression>());
      EXPECT_EQ(values[0]->As<ast::IntLiteralExpression>()->value, 4);
      EXPECT_EQ(values[0]->As<ast::IntLiteralExpression>()->suffix,
                ast::IntLiteralExpression::Suffix::kNone);
  
      ASSERT_NE(values[1], nullptr);
      auto* y_ident = values[1]->As<ast::IdentifierExpression>();
      ASSERT_NE(y_ident, nullptr);
      EXPECT_EQ(p->builder().Symbols().NameFor(y_ident->symbol), "height");
  
      ASSERT_EQ(values[2], nullptr);
  }
  
  TEST_F(ParserImplTest, Attribute_Workgroup_TooManyValues) {
      auto p = parser("workgroup_size(1, 2, 3, 4)");
      auto attr = p->attribute();
      EXPECT_FALSE(attr.matched);
      EXPECT_TRUE(attr.errored);
      EXPECT_EQ(attr.value, nullptr);
      EXPECT_TRUE(p->has_error());
      EXPECT_EQ(p->error(), "1:23: expected ')' for workgroup_size attribute");
  }
  
  TEST_F(ParserImplTest, Attribute_Workgroup_MissingLeftParam) {
      auto p = parser("workgroup_size 4, 5, 6)");
      auto attr = p->attribute();
      EXPECT_FALSE(attr.matched);
      EXPECT_TRUE(attr.errored);
      EXPECT_EQ(attr.value, nullptr);
      EXPECT_TRUE(p->has_error());
      EXPECT_EQ(p->error(), "1:16: expected '(' for workgroup_size attribute");
  }
  
  TEST_F(ParserImplTest, Attribute_Workgroup_MissingRightParam) {
      auto p = parser("workgroup_size(4, 5, 6");
      auto attr = p->attribute();
      EXPECT_FALSE(attr.matched);
      EXPECT_TRUE(attr.errored);
      EXPECT_EQ(attr.value, nullptr);
      EXPECT_TRUE(p->has_error());
      EXPECT_EQ(p->error(), "1:23: expected ')' for workgroup_size attribute");
  }
  
  TEST_F(ParserImplTest, Attribute_Workgroup_MissingValues) {
      auto p = parser("workgroup_size()");
      auto attr = p->attribute();
      EXPECT_FALSE(attr.matched);
      EXPECT_TRUE(attr.errored);
      EXPECT_EQ(attr.value, nullptr);
      EXPECT_TRUE(p->has_error());
      EXPECT_EQ(p->error(), "1:16: expected workgroup_size x parameter");
  }
  
  TEST_F(ParserImplTest, Attribute_Workgroup_Missing_X_Value) {
      auto p = parser("workgroup_size(, 2, 3)");
      auto attr = p->attribute();
      EXPECT_FALSE(attr.matched);
      EXPECT_TRUE(attr.errored);
      EXPECT_EQ(attr.value, nullptr);
      EXPECT_TRUE(p->has_error());
      EXPECT_EQ(p->error(), "1:16: expected workgroup_size x parameter");
  }
  
  TEST_F(ParserImplTest, Attribute_Workgroup_Missing_Y_Comma) {
      auto p = parser("workgroup_size(1 2, 3)");
      auto attr = p->attribute();
      EXPECT_FALSE(attr.matched);
      EXPECT_TRUE(attr.errored);
      EXPECT_EQ(attr.value, nullptr);
      EXPECT_TRUE(p->has_error());
      EXPECT_EQ(p->error(), "1:18: expected ')' for workgroup_size attribute");
  }
  
  TEST_F(ParserImplTest, Attribute_Workgroup_Missing_Y_Value) {
      auto p = parser("workgroup_size(1, , 3)");
      auto attr = p->attribute();
      EXPECT_FALSE(attr.matched);
      EXPECT_TRUE(attr.errored);
      EXPECT_EQ(attr.value, nullptr);
      EXPECT_TRUE(p->has_error());
      EXPECT_EQ(p->error(), "1:19: expected workgroup_size y parameter");
  }
  
  TEST_F(ParserImplTest, Attribute_Workgroup_Missing_Z_Comma) {
      auto p = parser("workgroup_size(1, 2 3)");
      auto attr = p->attribute();
      EXPECT_FALSE(attr.matched);
      EXPECT_TRUE(attr.errored);
      EXPECT_EQ(attr.value, nullptr);
      EXPECT_TRUE(p->has_error());
      EXPECT_EQ(p->error(), "1:21: expected ')' for workgroup_size attribute");
  }
  
  TEST_F(ParserImplTest, Attribute_Workgroup_Missing_Z_Value) {
      auto p = parser("workgroup_size(1, 2, )");
      auto attr = p->attribute();
      EXPECT_FALSE(attr.matched);
      EXPECT_TRUE(attr.errored);
      EXPECT_EQ(attr.value, nullptr);
      EXPECT_TRUE(p->has_error());
      EXPECT_EQ(p->error(), "1:22: expected workgroup_size z parameter");
  }
  
  TEST_F(ParserImplTest, Attribute_Stage) {
      auto p = parser("stage(compute)");
      auto attr = p->attribute();
      EXPECT_TRUE(attr.matched);
      EXPECT_FALSE(attr.errored);
      ASSERT_NE(attr.value, nullptr) << p->error();
      ASSERT_FALSE(p->has_error());
      auto* func_attr = attr.value->As<ast::Attribute>();
      ASSERT_NE(func_attr, nullptr);
      ASSERT_TRUE(func_attr->Is<ast::StageAttribute>());
      EXPECT_EQ(func_attr->As<ast::StageAttribute>()->stage, ast::PipelineStage::kCompute);
  }
  
  TEST_F(ParserImplTest, Attribute_Stage_MissingValue) {
      auto p = parser("stage()");
      auto attr = p->attribute();
      EXPECT_FALSE(attr.matched);
      EXPECT_TRUE(attr.errored);
      EXPECT_EQ(attr.value, nullptr);
      EXPECT_TRUE(p->has_error());
      EXPECT_EQ(p->error(), "1:7: invalid value for stage attribute");
  }
  
  TEST_F(ParserImplTest, Attribute_Stage_MissingInvalid) {
      auto p = parser("stage(nan)");
      auto attr = p->attribute();
      EXPECT_FALSE(attr.matched);
      EXPECT_TRUE(attr.errored);
      EXPECT_EQ(attr.value, nullptr);
      EXPECT_TRUE(p->has_error());
      EXPECT_EQ(p->error(), "1:7: invalid value for stage attribute");
  }
  
  TEST_F(ParserImplTest, Attribute_Stage_MissingLeftParen) {
      auto p = parser("stage compute)");
      auto attr = p->attribute();
      EXPECT_FALSE(attr.matched);
      EXPECT_TRUE(attr.errored);
      EXPECT_EQ(attr.value, nullptr);
      EXPECT_TRUE(p->has_error());
      EXPECT_EQ(p->error(), "1:7: expected '(' for stage attribute");
  }
  
  TEST_F(ParserImplTest, Attribute_Stage_MissingRightParen) {
      auto p = parser("stage(compute");
      auto attr = p->attribute();
      EXPECT_FALSE(attr.matched);
      EXPECT_TRUE(attr.errored);
      EXPECT_EQ(attr.value, nullptr);
      EXPECT_TRUE(p->has_error());
      EXPECT_EQ(p->error(), "1:14: expected ')' for stage attribute");
  }
  
  }  // namespace
  }  // namespace tint::reader::wgsl
  