| // 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, FunctionHeader) { |
| auto p = parser("fn main(a : i32, b: f32)"); |
| auto f = p->function_header(); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| EXPECT_TRUE(f.matched); |
| EXPECT_FALSE(f.errored); |
| |
| EXPECT_EQ(f->name, "main"); |
| ASSERT_EQ(f->params.size(), 2u); |
| EXPECT_EQ(f->params[0]->symbol, p->builder().Symbols().Get("a")); |
| EXPECT_EQ(f->params[1]->symbol, p->builder().Symbols().Get("b")); |
| EXPECT_TRUE(f->return_type->Is<ast::Void>()); |
| } |
| |
| TEST_F(ParserImplTest, FunctionHeader_TrailingComma) { |
| auto p = parser("fn main(a :i32,)"); |
| auto f = p->function_header(); |
| EXPECT_TRUE(f.matched); |
| EXPECT_FALSE(f.errored); |
| |
| EXPECT_EQ(f->name, "main"); |
| ASSERT_EQ(f->params.size(), 1u); |
| EXPECT_EQ(f->params[0]->symbol, p->builder().Symbols().Get("a")); |
| EXPECT_TRUE(f->return_type->Is<ast::Void>()); |
| } |
| |
| TEST_F(ParserImplTest, FunctionHeader_AttributeReturnType) { |
| auto p = parser("fn main() -> @location(1) f32"); |
| auto f = p->function_header(); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| EXPECT_TRUE(f.matched); |
| EXPECT_FALSE(f.errored); |
| |
| EXPECT_EQ(f->name, "main"); |
| EXPECT_EQ(f->params.size(), 0u); |
| EXPECT_TRUE(f->return_type->Is<ast::F32>()); |
| ASSERT_EQ(f->return_type_attributes.size(), 1u); |
| auto* loc = f->return_type_attributes[0]->As<ast::LocationAttribute>(); |
| ASSERT_TRUE(loc != nullptr); |
| EXPECT_EQ(loc->value, 1u); |
| } |
| |
| TEST_F(ParserImplTest, FunctionHeader_InvariantReturnType) { |
| auto p = parser("fn main() -> @invariant f32"); |
| auto f = p->function_header(); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| EXPECT_TRUE(f.matched); |
| EXPECT_FALSE(f.errored); |
| |
| EXPECT_EQ(f->name, "main"); |
| EXPECT_EQ(f->params.size(), 0u); |
| EXPECT_TRUE(f->return_type->Is<ast::F32>()); |
| ASSERT_EQ(f->return_type_attributes.size(), 1u); |
| EXPECT_TRUE(f->return_type_attributes[0]->Is<ast::InvariantAttribute>()); |
| } |
| |
| TEST_F(ParserImplTest, FunctionHeader_MissingIdent) { |
| auto p = parser("fn ()"); |
| auto f = p->function_header(); |
| EXPECT_FALSE(f.matched); |
| EXPECT_TRUE(f.errored); |
| EXPECT_TRUE(p->has_error()); |
| EXPECT_EQ(p->error(), "1:4: expected identifier for function declaration"); |
| } |
| |
| TEST_F(ParserImplTest, FunctionHeader_InvalidIdent) { |
| auto p = parser("fn 133main() -> i32"); |
| auto f = p->function_header(); |
| EXPECT_FALSE(f.matched); |
| EXPECT_TRUE(f.errored); |
| EXPECT_TRUE(p->has_error()); |
| EXPECT_EQ(p->error(), "1:4: expected identifier for function declaration"); |
| } |
| |
| TEST_F(ParserImplTest, FunctionHeader_MissingParenLeft) { |
| auto p = parser("fn main) -> i32"); |
| auto f = p->function_header(); |
| EXPECT_FALSE(f.matched); |
| EXPECT_TRUE(f.errored); |
| EXPECT_TRUE(p->has_error()); |
| EXPECT_EQ(p->error(), "1:8: expected '(' for function declaration"); |
| } |
| |
| TEST_F(ParserImplTest, FunctionHeader_InvalidParamList) { |
| auto p = parser("fn main(a :i32, ,) -> i32"); |
| auto f = p->function_header(); |
| EXPECT_FALSE(f.matched); |
| EXPECT_TRUE(f.errored); |
| EXPECT_TRUE(p->has_error()); |
| EXPECT_EQ(p->error(), "1:17: expected ')' for function declaration"); |
| } |
| |
| TEST_F(ParserImplTest, FunctionHeader_MissingParenRight) { |
| auto p = parser("fn main( -> i32"); |
| auto f = p->function_header(); |
| EXPECT_FALSE(f.matched); |
| EXPECT_TRUE(f.errored); |
| EXPECT_TRUE(p->has_error()); |
| EXPECT_EQ(p->error(), "1:10: expected ')' for function declaration"); |
| } |
| |
| TEST_F(ParserImplTest, FunctionHeader_MissingReturnType) { |
| auto p = parser("fn main() ->"); |
| auto f = p->function_header(); |
| EXPECT_FALSE(f.matched); |
| EXPECT_TRUE(f.errored); |
| EXPECT_TRUE(p->has_error()); |
| EXPECT_EQ(p->error(), "1:13: unable to determine function return type"); |
| } |
| |
| } // namespace |
| } // namespace tint::reader::wgsl |