src/tint/lang/wgsl/reader/parser/primary_expression_test.cc - dawn - 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/reader/parser/helper_test.h"

 namespace tint::wgsl::reader {
 namespace {

 TEST_F(WGSLParserTest, PrimaryExpression_Ident) {
     auto p = parser("a");
     auto e = p->primary_expression();
     EXPECT_TRUE(e.matched);
     EXPECT_FALSE(e.errored);
     EXPECT_FALSE(p->has_error()) << p->error();
     ASSERT_NE(e.value, nullptr);
     ASSERT_TRUE(e->Is<ast::IdentifierExpression>());
     ast::CheckIdentifier(e.value, "a");
 }

 TEST_F(WGSLParserTest, PrimaryExpression_TypeDecl) {
     auto p = parser("vec4<i32>(1, 2, 3, 4))");
     auto e = p->primary_expression();
     EXPECT_TRUE(e.matched);
     EXPECT_FALSE(e.errored);
     EXPECT_FALSE(p->has_error()) << p->error();
     ASSERT_NE(e.value, nullptr);
     ASSERT_TRUE(e->Is<ast::CallExpression>());
     auto* call = e->As<ast::CallExpression>();

     ASSERT_EQ(call->args.Length(), 4u);
     const auto& val = call->args;
     ASSERT_TRUE(val[0]->Is<ast::IntLiteralExpression>());
     EXPECT_EQ(val[0]->As<ast::IntLiteralExpression>()->value, 1);
     EXPECT_EQ(val[0]->As<ast::IntLiteralExpression>()->suffix,
               ast::IntLiteralExpression::Suffix::kNone);

     ASSERT_TRUE(val[1]->Is<ast::IntLiteralExpression>());
     EXPECT_EQ(val[1]->As<ast::IntLiteralExpression>()->value, 2);
     EXPECT_EQ(val[1]->As<ast::IntLiteralExpression>()->suffix,
               ast::IntLiteralExpression::Suffix::kNone);

     ASSERT_TRUE(val[2]->Is<ast::IntLiteralExpression>());
     EXPECT_EQ(val[2]->As<ast::IntLiteralExpression>()->value, 3);
     EXPECT_EQ(val[2]->As<ast::IntLiteralExpression>()->suffix,
               ast::IntLiteralExpression::Suffix::kNone);

     ASSERT_TRUE(val[3]->Is<ast::IntLiteralExpression>());
     EXPECT_EQ(val[3]->As<ast::IntLiteralExpression>()->value, 4);
     EXPECT_EQ(val[3]->As<ast::IntLiteralExpression>()->suffix,
               ast::IntLiteralExpression::Suffix::kNone);
 }

 TEST_F(WGSLParserTest, PrimaryExpression_TypeDecl_ZeroInitializer) {
     auto p = parser("vec4<i32>()");
     auto e = p->primary_expression();
     EXPECT_TRUE(e.matched);
     EXPECT_FALSE(e.errored);
     EXPECT_FALSE(p->has_error()) << p->error();
     ASSERT_NE(e.value, nullptr);

     ASSERT_TRUE(e->Is<ast::CallExpression>());
     auto* call = e->As<ast::CallExpression>();

     ASSERT_EQ(call->args.Length(), 0u);
 }

 TEST_F(WGSLParserTest, PrimaryExpression_TypeDecl_MissingRightParen) {
     auto p = parser("vec4<f32>(2., 3., 4., 5.");
     auto e = p->primary_expression();
     EXPECT_FALSE(e.matched);
     EXPECT_TRUE(e.errored);
     EXPECT_EQ(e.value, nullptr);
     ASSERT_TRUE(p->has_error());
     EXPECT_EQ(p->error(), "1:25: expected ',' for function call");
 }

 TEST_F(WGSLParserTest, PrimaryExpression_TypeDecl_InvalidValue) {
     auto p = parser("i32(if(a) {})");
     auto e = p->primary_expression();
     EXPECT_FALSE(e.matched);
     EXPECT_TRUE(e.errored);
     EXPECT_EQ(e.value, nullptr);
     ASSERT_TRUE(p->has_error());
     EXPECT_EQ(p->error(), "1:5: expected expression for function call");
 }

 TEST_F(WGSLParserTest, PrimaryExpression_TypeDecl_StructInitializer_Empty) {
     auto p = parser(R"(
   struct S { a : i32, b : f32, }
   S()
   )");

     p->global_decl();
     ASSERT_FALSE(p->has_error()) << p->error();

     auto e = p->primary_expression();
     EXPECT_TRUE(e.matched);
     EXPECT_FALSE(e.errored);
     EXPECT_FALSE(p->has_error()) << p->error();
     ASSERT_NE(e.value, nullptr);

     ASSERT_TRUE(e->Is<ast::CallExpression>());
     auto* call = e->As<ast::CallExpression>();

     ASSERT_NE(call->target, nullptr);
     ast::CheckIdentifier(call->target, "S");

     ASSERT_EQ(call->args.Length(), 0u);
 }

 TEST_F(WGSLParserTest, PrimaryExpression_TypeDecl_StructInitializer_NotEmpty) {
     auto p = parser(R"(
   struct S { a : i32, b : f32, }
   S(1u, 2.0)
   )");

     p->global_decl();
     ASSERT_FALSE(p->has_error()) << p->error();

     auto e = p->primary_expression();
     EXPECT_TRUE(e.matched);
     EXPECT_FALSE(e.errored);
     EXPECT_FALSE(p->has_error()) << p->error();
     ASSERT_NE(e.value, nullptr);

     ASSERT_TRUE(e->Is<ast::CallExpression>());
     auto* call = e->As<ast::CallExpression>();

     ASSERT_NE(call->target, nullptr);
     ast::CheckIdentifier(call->target, "S");

     ASSERT_EQ(call->args.Length(), 2u);

     ASSERT_TRUE(call->args[0]->Is<ast::IntLiteralExpression>());
     EXPECT_EQ(call->args[0]->As<ast::IntLiteralExpression>()->value, 1u);
     EXPECT_EQ(call->args[0]->As<ast::IntLiteralExpression>()->suffix,
               ast::IntLiteralExpression::Suffix::kU);

     ASSERT_TRUE(call->args[1]->Is<ast::FloatLiteralExpression>());
     EXPECT_EQ(call->args[1]->As<ast::FloatLiteralExpression>()->value, 2.f);
 }

 TEST_F(WGSLParserTest, PrimaryExpression_ConstLiteral_True) {
     auto p = parser("true");
     auto e = p->primary_expression();
     EXPECT_TRUE(e.matched);
     EXPECT_FALSE(e.errored);
     EXPECT_FALSE(p->has_error()) << p->error();
     ASSERT_NE(e.value, nullptr);
     ASSERT_TRUE(e->Is<ast::BoolLiteralExpression>());
     EXPECT_TRUE(e->As<ast::BoolLiteralExpression>()->value);
 }

 TEST_F(WGSLParserTest, PrimaryExpression_ParenExpr) {
     auto p = parser("(a == b)");
     auto e = p->primary_expression();
     EXPECT_TRUE(e.matched);
     EXPECT_FALSE(e.errored);
     EXPECT_FALSE(p->has_error()) << p->error();
     ASSERT_NE(e.value, nullptr);
     ASSERT_TRUE(e->Is<ast::BinaryExpression>());
 }

 TEST_F(WGSLParserTest, PrimaryExpression_ParenExpr_MissingRightParen) {
     auto p = parser("(a == b");
     auto e = p->primary_expression();
     EXPECT_FALSE(e.matched);
     EXPECT_TRUE(e.errored);
     EXPECT_EQ(e.value, nullptr);
     ASSERT_TRUE(p->has_error());
     EXPECT_EQ(p->error(), "1:8: expected ')'");
 }

 TEST_F(WGSLParserTest, PrimaryExpression_ParenExpr_MissingExpr) {
     auto p = parser("()");
     auto e = p->primary_expression();
     EXPECT_FALSE(e.matched);
     EXPECT_TRUE(e.errored);
     EXPECT_EQ(e.value, nullptr);
     ASSERT_TRUE(p->has_error());
     EXPECT_EQ(p->error(), "1:2: unable to parse expression");
 }

 TEST_F(WGSLParserTest, PrimaryExpression_ParenExpr_InvalidExpr) {
     auto p = parser("(if (a) {})");
     auto e = p->primary_expression();
     EXPECT_FALSE(e.matched);
     EXPECT_TRUE(e.errored);
     EXPECT_EQ(e.value, nullptr);
     ASSERT_TRUE(p->has_error());
     EXPECT_EQ(p->error(), "1:2: unable to parse expression");
 }

 TEST_F(WGSLParserTest, PrimaryExpression_Cast) {
     auto p = parser("f32(1)");

     auto e = p->primary_expression();
     EXPECT_TRUE(e.matched);
     EXPECT_FALSE(e.errored);
     EXPECT_FALSE(p->has_error()) << p->error();
     ASSERT_NE(e.value, nullptr);

     ASSERT_TRUE(e->Is<ast::CallExpression>());
     auto* call = e->As<ast::CallExpression>();
     ast::CheckIdentifier(call->target, "f32");

     ASSERT_EQ(call->args.Length(), 1u);
     ASSERT_TRUE(call->args[0]->Is<ast::IntLiteralExpression>());
 }

 }  // 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/reader/parser/helper_test.h"

	namespace tint::wgsl::reader {
	namespace {

	TEST_F(WGSLParserTest, PrimaryExpression_Ident) {
	auto p = parser("a");
	auto e = p->primary_expression();
	EXPECT_TRUE(e.matched);
	EXPECT_FALSE(e.errored);
	EXPECT_FALSE(p->has_error()) << p->error();
	ASSERT_NE(e.value, nullptr);
	ASSERT_TRUE(e->Is<ast::IdentifierExpression>());
	ast::CheckIdentifier(e.value, "a");
	}

	TEST_F(WGSLParserTest, PrimaryExpression_TypeDecl) {
	auto p = parser("vec4<i32>(1, 2, 3, 4))");
	auto e = p->primary_expression();
	EXPECT_TRUE(e.matched);
	EXPECT_FALSE(e.errored);
	EXPECT_FALSE(p->has_error()) << p->error();
	ASSERT_NE(e.value, nullptr);
	ASSERT_TRUE(e->Is<ast::CallExpression>());
	auto* call = e->As<ast::CallExpression>();

	ASSERT_EQ(call->args.Length(), 4u);
	const auto& val = call->args;
	ASSERT_TRUE(val[0]->Is<ast::IntLiteralExpression>());
	EXPECT_EQ(val[0]->As<ast::IntLiteralExpression>()->value, 1);
	EXPECT_EQ(val[0]->As<ast::IntLiteralExpression>()->suffix,
	ast::IntLiteralExpression::Suffix::kNone);

	ASSERT_TRUE(val[1]->Is<ast::IntLiteralExpression>());
	EXPECT_EQ(val[1]->As<ast::IntLiteralExpression>()->value, 2);
	EXPECT_EQ(val[1]->As<ast::IntLiteralExpression>()->suffix,
	ast::IntLiteralExpression::Suffix::kNone);

	ASSERT_TRUE(val[2]->Is<ast::IntLiteralExpression>());
	EXPECT_EQ(val[2]->As<ast::IntLiteralExpression>()->value, 3);
	EXPECT_EQ(val[2]->As<ast::IntLiteralExpression>()->suffix,
	ast::IntLiteralExpression::Suffix::kNone);

	ASSERT_TRUE(val[3]->Is<ast::IntLiteralExpression>());
	EXPECT_EQ(val[3]->As<ast::IntLiteralExpression>()->value, 4);
	EXPECT_EQ(val[3]->As<ast::IntLiteralExpression>()->suffix,
	ast::IntLiteralExpression::Suffix::kNone);
	}

	TEST_F(WGSLParserTest, PrimaryExpression_TypeDecl_ZeroInitializer) {
	auto p = parser("vec4<i32>()");
	auto e = p->primary_expression();
	EXPECT_TRUE(e.matched);
	EXPECT_FALSE(e.errored);
	EXPECT_FALSE(p->has_error()) << p->error();
	ASSERT_NE(e.value, nullptr);

	ASSERT_TRUE(e->Is<ast::CallExpression>());
	auto* call = e->As<ast::CallExpression>();

	ASSERT_EQ(call->args.Length(), 0u);
	}

	TEST_F(WGSLParserTest, PrimaryExpression_TypeDecl_MissingRightParen) {
	auto p = parser("vec4<f32>(2., 3., 4., 5.");
	auto e = p->primary_expression();
	EXPECT_FALSE(e.matched);
	EXPECT_TRUE(e.errored);
	EXPECT_EQ(e.value, nullptr);
	ASSERT_TRUE(p->has_error());
	EXPECT_EQ(p->error(), "1:25: expected ',' for function call");
	}

	TEST_F(WGSLParserTest, PrimaryExpression_TypeDecl_InvalidValue) {
	auto p = parser("i32(if(a) {})");
	auto e = p->primary_expression();
	EXPECT_FALSE(e.matched);
	EXPECT_TRUE(e.errored);
	EXPECT_EQ(e.value, nullptr);
	ASSERT_TRUE(p->has_error());
	EXPECT_EQ(p->error(), "1:5: expected expression for function call");
	}

	TEST_F(WGSLParserTest, PrimaryExpression_TypeDecl_StructInitializer_Empty) {
	auto p = parser(R"(
	struct S { a : i32, b : f32, }
	S()
	)");

	p->global_decl();
	ASSERT_FALSE(p->has_error()) << p->error();

	auto e = p->primary_expression();
	EXPECT_TRUE(e.matched);
	EXPECT_FALSE(e.errored);
	EXPECT_FALSE(p->has_error()) << p->error();
	ASSERT_NE(e.value, nullptr);

	ASSERT_TRUE(e->Is<ast::CallExpression>());
	auto* call = e->As<ast::CallExpression>();

	ASSERT_NE(call->target, nullptr);
	ast::CheckIdentifier(call->target, "S");

	ASSERT_EQ(call->args.Length(), 0u);
	}

	TEST_F(WGSLParserTest, PrimaryExpression_TypeDecl_StructInitializer_NotEmpty) {
	auto p = parser(R"(
	struct S { a : i32, b : f32, }
	S(1u, 2.0)
	)");

	p->global_decl();
	ASSERT_FALSE(p->has_error()) << p->error();

	auto e = p->primary_expression();
	EXPECT_TRUE(e.matched);
	EXPECT_FALSE(e.errored);
	EXPECT_FALSE(p->has_error()) << p->error();
	ASSERT_NE(e.value, nullptr);

	ASSERT_TRUE(e->Is<ast::CallExpression>());
	auto* call = e->As<ast::CallExpression>();

	ASSERT_NE(call->target, nullptr);
	ast::CheckIdentifier(call->target, "S");

	ASSERT_EQ(call->args.Length(), 2u);

	ASSERT_TRUE(call->args[0]->Is<ast::IntLiteralExpression>());
	EXPECT_EQ(call->args[0]->As<ast::IntLiteralExpression>()->value, 1u);
	EXPECT_EQ(call->args[0]->As<ast::IntLiteralExpression>()->suffix,
	ast::IntLiteralExpression::Suffix::kU);

	ASSERT_TRUE(call->args[1]->Is<ast::FloatLiteralExpression>());
	EXPECT_EQ(call->args[1]->As<ast::FloatLiteralExpression>()->value, 2.f);
	}

	TEST_F(WGSLParserTest, PrimaryExpression_ConstLiteral_True) {
	auto p = parser("true");
	auto e = p->primary_expression();
	EXPECT_TRUE(e.matched);
	EXPECT_FALSE(e.errored);
	EXPECT_FALSE(p->has_error()) << p->error();
	ASSERT_NE(e.value, nullptr);
	ASSERT_TRUE(e->Is<ast::BoolLiteralExpression>());
	EXPECT_TRUE(e->As<ast::BoolLiteralExpression>()->value);
	}

	TEST_F(WGSLParserTest, PrimaryExpression_ParenExpr) {
	auto p = parser("(a == b)");
	auto e = p->primary_expression();
	EXPECT_TRUE(e.matched);
	EXPECT_FALSE(e.errored);
	EXPECT_FALSE(p->has_error()) << p->error();
	ASSERT_NE(e.value, nullptr);
	ASSERT_TRUE(e->Is<ast::BinaryExpression>());
	}

	TEST_F(WGSLParserTest, PrimaryExpression_ParenExpr_MissingRightParen) {
	auto p = parser("(a == b");
	auto e = p->primary_expression();
	EXPECT_FALSE(e.matched);
	EXPECT_TRUE(e.errored);
	EXPECT_EQ(e.value, nullptr);
	ASSERT_TRUE(p->has_error());
	EXPECT_EQ(p->error(), "1:8: expected ')'");
	}

	TEST_F(WGSLParserTest, PrimaryExpression_ParenExpr_MissingExpr) {
	auto p = parser("()");
	auto e = p->primary_expression();
	EXPECT_FALSE(e.matched);
	EXPECT_TRUE(e.errored);
	EXPECT_EQ(e.value, nullptr);
	ASSERT_TRUE(p->has_error());
	EXPECT_EQ(p->error(), "1:2: unable to parse expression");
	}

	TEST_F(WGSLParserTest, PrimaryExpression_ParenExpr_InvalidExpr) {
	auto p = parser("(if (a) {})");
	auto e = p->primary_expression();
	EXPECT_FALSE(e.matched);
	EXPECT_TRUE(e.errored);
	EXPECT_EQ(e.value, nullptr);
	ASSERT_TRUE(p->has_error());
	EXPECT_EQ(p->error(), "1:2: unable to parse expression");
	}

	TEST_F(WGSLParserTest, PrimaryExpression_Cast) {
	auto p = parser("f32(1)");

	auto e = p->primary_expression();
	EXPECT_TRUE(e.matched);
	EXPECT_FALSE(e.errored);
	EXPECT_FALSE(p->has_error()) << p->error();
	ASSERT_NE(e.value, nullptr);

	ASSERT_TRUE(e->Is<ast::CallExpression>());
	auto* call = e->As<ast::CallExpression>();
	ast::CheckIdentifier(call->target, "f32");

	ASSERT_EQ(call->args.Length(), 1u);
	ASSERT_TRUE(call->args[0]->Is<ast::IntLiteralExpression>());
	}

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