| // 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, ArgumentExpressionList_Parses) { |
| auto p = parser("(a)"); |
| auto e = p->expect_argument_expression_list("argument list"); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| ASSERT_FALSE(e.errored); |
| |
| ASSERT_EQ(e.value.Length(), 1u); |
| ASSERT_TRUE(e.value[0]->Is<ast::IdentifierExpression>()); |
| } |
| |
| TEST_F(ParserImplTest, ArgumentExpressionList_ParsesEmptyList) { |
| auto p = parser("()"); |
| auto e = p->expect_argument_expression_list("argument list"); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| ASSERT_FALSE(e.errored); |
| |
| ASSERT_EQ(e.value.Length(), 0u); |
| } |
| |
| TEST_F(ParserImplTest, ArgumentExpressionList_ParsesMultiple) { |
| auto p = parser("(a, 33, 1+2)"); |
| auto e = p->expect_argument_expression_list("argument list"); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| ASSERT_FALSE(e.errored); |
| |
| ASSERT_EQ(e.value.Length(), 3u); |
| ASSERT_TRUE(e.value[0]->Is<ast::IdentifierExpression>()); |
| ASSERT_TRUE(e.value[1]->Is<ast::LiteralExpression>()); |
| ASSERT_TRUE(e.value[2]->Is<ast::BinaryExpression>()); |
| } |
| |
| TEST_F(ParserImplTest, ArgumentExpressionList_TrailingComma) { |
| auto p = parser("(a, 42,)"); |
| auto e = p->expect_argument_expression_list("argument list"); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| ASSERT_FALSE(e.errored); |
| |
| ASSERT_EQ(e.value.Length(), 2u); |
| ASSERT_TRUE(e.value[0]->Is<ast::IdentifierExpression>()); |
| ASSERT_TRUE(e.value[1]->Is<ast::LiteralExpression>()); |
| } |
| |
| TEST_F(ParserImplTest, ArgumentExpressionList_HandlesMissingLeftParen) { |
| auto p = parser("a)"); |
| auto e = p->expect_argument_expression_list("argument list"); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_TRUE(e.errored); |
| EXPECT_EQ(p->error(), "1:1: expected '(' for argument list"); |
| } |
| |
| TEST_F(ParserImplTest, ArgumentExpressionList_HandlesMissingRightParen) { |
| auto p = parser("(a"); |
| auto e = p->expect_argument_expression_list("argument list"); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_TRUE(e.errored); |
| EXPECT_EQ(p->error(), "1:3: expected ')' for argument list"); |
| } |
| |
| TEST_F(ParserImplTest, ArgumentExpressionList_HandlesMissingExpression_0) { |
| auto p = parser("(,)"); |
| auto e = p->expect_argument_expression_list("argument list"); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_TRUE(e.errored); |
| EXPECT_EQ(p->error(), "1:2: expected ')' for argument list"); |
| } |
| |
| TEST_F(ParserImplTest, ArgumentExpressionList_HandlesMissingExpression_1) { |
| auto p = parser("(a, ,)"); |
| auto e = p->expect_argument_expression_list("argument list"); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_TRUE(e.errored); |
| EXPECT_EQ(p->error(), "1:5: expected ')' for argument list"); |
| } |
| |
| TEST_F(ParserImplTest, ArgumentExpressionList_HandlesInvalidExpression) { |
| auto p = parser("(if(a) {})"); |
| auto e = p->expect_argument_expression_list("argument list"); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_TRUE(e.errored); |
| EXPECT_EQ(p->error(), "1:2: expected ')' for argument list"); |
| } |
| |
| } // namespace |
| } // namespace tint::reader::wgsl |