src/tint/lang/wgsl/reader/parser/function_attribute_test.cc - tint - Git at Google

 // Copyright 2020 The Dawn & Tint Authors
 //
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are met:
 //
 // 1. Redistributions of source code must retain the above copyright notice, this
 //    list of conditions and the following disclaimer.
 //
 // 2. Redistributions in binary form must reproduce the above copyright notice,
 //    this list of conditions and the following disclaimer in the documentation
 //    and/or other materials provided with the distribution.
 //
 // 3. Neither the name of the copyright holder nor the names of its
 //    contributors may be used to endorse or promote products derived from
 //    this software without specific prior written permission.
 //
 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 // AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 // IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 // DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
 // FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 // DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
 // CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
 // OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

 #include "src/tint/lang/wgsl/ast/helper_test.h"
 #include "src/tint/lang/wgsl/ast/stage_attribute.h"
 #include "src/tint/lang/wgsl/ast/workgroup_attribute.h"
 #include "src/tint/lang/wgsl/reader/parser/helper_test.h"

 namespace tint::wgsl::reader {
 namespace {

 TEST_F(WGSLParserTest, 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(WGSLParserTest, Attribute_Workgroup_Expression) {
     auto p = parser("workgroup_size(4 + 2)");
     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::BinaryExpression>());
     auto* expr = values[0]->As<ast::BinaryExpression>();
     EXPECT_EQ(expr->op, core::BinaryOp::kAdd);

     EXPECT_EQ(expr->lhs->As<ast::IntLiteralExpression>()->value, 4);
     EXPECT_EQ(expr->lhs->As<ast::IntLiteralExpression>()->suffix,
               ast::IntLiteralExpression::Suffix::kNone);

     EXPECT_EQ(expr->rhs->As<ast::IntLiteralExpression>()->value, 2);
     EXPECT_EQ(expr->rhs->As<ast::IntLiteralExpression>()->suffix,
               ast::IntLiteralExpression::Suffix::kNone);

     EXPECT_EQ(values[1], nullptr);
     EXPECT_EQ(values[2], nullptr);
 }

 TEST_F(WGSLParserTest, Attribute_Workgroup_1Param_TrailingComma) {
     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(WGSLParserTest, Attribute_Workgroup_1Param_TrailingComma_Double) {
     auto p = parser("workgroup_size(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(), "1:18: expected expression for workgroup_size");
 }

 TEST_F(WGSLParserTest, 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(WGSLParserTest, Attribute_Workgroup_2Param_Expression) {
     auto p = parser("workgroup_size(4, 5 - 2)");
     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::BinaryExpression>());
     auto* expr = values[1]->As<ast::BinaryExpression>();
     EXPECT_EQ(expr->op, core::BinaryOp::kSubtract);

     EXPECT_EQ(expr->lhs->As<ast::IntLiteralExpression>()->value, 5);
     EXPECT_EQ(expr->lhs->As<ast::IntLiteralExpression>()->suffix,
               ast::IntLiteralExpression::Suffix::kNone);

     EXPECT_EQ(expr->rhs->As<ast::IntLiteralExpression>()->value, 2);
     EXPECT_EQ(expr->rhs->As<ast::IntLiteralExpression>()->suffix,
               ast::IntLiteralExpression::Suffix::kNone);

     EXPECT_EQ(values[2], nullptr);
 }

 TEST_F(WGSLParserTest, Attribute_Workgroup_2Param_TrailingComma) {
     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(WGSLParserTest, Attribute_Workgroup21Param_TrailingComma_Double) {
     auto p = parser("workgroup_size(4,5,,)");
     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(), "1:20: expected expression for workgroup_size");
 }

 TEST_F(WGSLParserTest, 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(WGSLParserTest, Attribute_Workgroup_3Param_Expression) {
     auto p = parser("workgroup_size(4, 5, 6 << 1)");
     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::BinaryExpression>());
     auto* expr = values[2]->As<ast::BinaryExpression>();
     EXPECT_EQ(expr->op, core::BinaryOp::kShiftLeft);

     EXPECT_EQ(expr->lhs->As<ast::IntLiteralExpression>()->value, 6);
     EXPECT_EQ(expr->lhs->As<ast::IntLiteralExpression>()->suffix,
               ast::IntLiteralExpression::Suffix::kNone);

     EXPECT_EQ(expr->rhs->As<ast::IntLiteralExpression>()->value, 1);
     EXPECT_EQ(expr->rhs->As<ast::IntLiteralExpression>()->suffix,
               ast::IntLiteralExpression::Suffix::kNone);
 }

 TEST_F(WGSLParserTest, Attribute_Workgroup_3Param_TrailingComma) {
     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(WGSLParserTest, 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);
     ast::CheckIdentifier(values[1], "height");

     ASSERT_EQ(values[2], nullptr);
 }

 TEST_F(WGSLParserTest, 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(), "1:1: workgroup_size expects at most 3 arguments, got 4");
 }

 TEST_F(WGSLParserTest, 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(WGSLParserTest, 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(WGSLParserTest, 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(), "1:1: workgroup_size expects at least 1 argument");
 }

 TEST_F(WGSLParserTest, 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 expression for workgroup_size");
 }

 TEST_F(WGSLParserTest, 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(WGSLParserTest, 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 expression for workgroup_size");
 }

 TEST_F(WGSLParserTest, 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(WGSLParserTest, Attribute_Compute) {
     auto p = parser("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(WGSLParserTest, Attribute_Vertex) {
     auto p = parser("vertex");
     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::kVertex);
 }

 TEST_F(WGSLParserTest, Attribute_Fragment) {
     auto p = parser("fragment");
     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::kFragment);
 }

 TEST_F(WGSLParserTest, Attribute_MustUse) {
     auto p = parser("must_use");
     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);
     EXPECT_TRUE(func_attr->Is<ast::MustUseAttribute>());
 }

 }  // namespace
 }  // namespace tint::wgsl::reader
	// Copyright 2020 The Dawn & Tint Authors
	//
	// Redistribution and use in source and binary forms, with or without
	// modification, are permitted provided that the following conditions are met:
	//
	// 1. Redistributions of source code must retain the above copyright notice, this
	// list of conditions and the following disclaimer.
	//
	// 2. Redistributions in binary form must reproduce the above copyright notice,
	// this list of conditions and the following disclaimer in the documentation
	// and/or other materials provided with the distribution.
	//
	// 3. Neither the name of the copyright holder nor the names of its
	// contributors may be used to endorse or promote products derived from
	// this software without specific prior written permission.
	//
	// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
	// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
	// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
	// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
	// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
	// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
	// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
	// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

	#include "src/tint/lang/wgsl/ast/helper_test.h"
	#include "src/tint/lang/wgsl/ast/stage_attribute.h"
	#include "src/tint/lang/wgsl/ast/workgroup_attribute.h"
	#include "src/tint/lang/wgsl/reader/parser/helper_test.h"

	namespace tint::wgsl::reader {
	namespace {

	TEST_F(WGSLParserTest, 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(WGSLParserTest, Attribute_Workgroup_Expression) {
	auto p = parser("workgroup_size(4 + 2)");
	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::BinaryExpression>());
	auto* expr = values[0]->As<ast::BinaryExpression>();
	EXPECT_EQ(expr->op, core::BinaryOp::kAdd);

	EXPECT_EQ(expr->lhs->As<ast::IntLiteralExpression>()->value, 4);
	EXPECT_EQ(expr->lhs->As<ast::IntLiteralExpression>()->suffix,
	ast::IntLiteralExpression::Suffix::kNone);

	EXPECT_EQ(expr->rhs->As<ast::IntLiteralExpression>()->value, 2);
	EXPECT_EQ(expr->rhs->As<ast::IntLiteralExpression>()->suffix,
	ast::IntLiteralExpression::Suffix::kNone);

	EXPECT_EQ(values[1], nullptr);
	EXPECT_EQ(values[2], nullptr);
	}

	TEST_F(WGSLParserTest, Attribute_Workgroup_1Param_TrailingComma) {
	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(WGSLParserTest, Attribute_Workgroup_1Param_TrailingComma_Double) {
	auto p = parser("workgroup_size(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(), "1:18: expected expression for workgroup_size");
	}

	TEST_F(WGSLParserTest, 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(WGSLParserTest, Attribute_Workgroup_2Param_Expression) {
	auto p = parser("workgroup_size(4, 5 - 2)");
	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::BinaryExpression>());
	auto* expr = values[1]->As<ast::BinaryExpression>();
	EXPECT_EQ(expr->op, core::BinaryOp::kSubtract);

	EXPECT_EQ(expr->lhs->As<ast::IntLiteralExpression>()->value, 5);
	EXPECT_EQ(expr->lhs->As<ast::IntLiteralExpression>()->suffix,
	ast::IntLiteralExpression::Suffix::kNone);

	EXPECT_EQ(expr->rhs->As<ast::IntLiteralExpression>()->value, 2);
	EXPECT_EQ(expr->rhs->As<ast::IntLiteralExpression>()->suffix,
	ast::IntLiteralExpression::Suffix::kNone);

	EXPECT_EQ(values[2], nullptr);
	}

	TEST_F(WGSLParserTest, Attribute_Workgroup_2Param_TrailingComma) {
	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(WGSLParserTest, Attribute_Workgroup21Param_TrailingComma_Double) {
	auto p = parser("workgroup_size(4,5,,)");
	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(), "1:20: expected expression for workgroup_size");
	}

	TEST_F(WGSLParserTest, 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(WGSLParserTest, Attribute_Workgroup_3Param_Expression) {
	auto p = parser("workgroup_size(4, 5, 6 << 1)");
	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::BinaryExpression>());
	auto* expr = values[2]->As<ast::BinaryExpression>();
	EXPECT_EQ(expr->op, core::BinaryOp::kShiftLeft);

	EXPECT_EQ(expr->lhs->As<ast::IntLiteralExpression>()->value, 6);
	EXPECT_EQ(expr->lhs->As<ast::IntLiteralExpression>()->suffix,
	ast::IntLiteralExpression::Suffix::kNone);

	EXPECT_EQ(expr->rhs->As<ast::IntLiteralExpression>()->value, 1);
	EXPECT_EQ(expr->rhs->As<ast::IntLiteralExpression>()->suffix,
	ast::IntLiteralExpression::Suffix::kNone);
	}

	TEST_F(WGSLParserTest, Attribute_Workgroup_3Param_TrailingComma) {
	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(WGSLParserTest, 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);
	ast::CheckIdentifier(values[1], "height");

	ASSERT_EQ(values[2], nullptr);
	}

	TEST_F(WGSLParserTest, 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(), "1:1: workgroup_size expects at most 3 arguments, got 4");
	}

	TEST_F(WGSLParserTest, 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(WGSLParserTest, 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(WGSLParserTest, 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(), "1:1: workgroup_size expects at least 1 argument");
	}

	TEST_F(WGSLParserTest, 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 expression for workgroup_size");
	}

	TEST_F(WGSLParserTest, 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(WGSLParserTest, 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 expression for workgroup_size");
	}

	TEST_F(WGSLParserTest, 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(WGSLParserTest, Attribute_Compute) {
	auto p = parser("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(WGSLParserTest, Attribute_Vertex) {
	auto p = parser("vertex");
	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::kVertex);
	}

	TEST_F(WGSLParserTest, Attribute_Fragment) {
	auto p = parser("fragment");
	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::kFragment);
	}

	TEST_F(WGSLParserTest, Attribute_MustUse) {
	auto p = parser("must_use");
	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);
	EXPECT_TRUE(func_attr->Is<ast::MustUseAttribute>());
	}

	} // namespace
	} // namespace tint::wgsl::reader