| // 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/reader/wgsl/parser_impl_test_helper.h" |
| |
| namespace tint { |
| namespace reader { |
| namespace wgsl { |
| namespace { |
| |
| TEST_F(ParserImplTest, SwitchStmt_WithoutDefault) { |
| auto p = parser(R"(switch(a) { |
| case 1: {} |
| case 2: {} |
| })"); |
| auto e = p->switch_stmt(); |
| 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::SwitchStatement>()); |
| ASSERT_EQ(e->body.size(), 2u); |
| EXPECT_FALSE(e->body[0]->IsDefault()); |
| EXPECT_FALSE(e->body[1]->IsDefault()); |
| } |
| |
| TEST_F(ParserImplTest, SwitchStmt_Empty) { |
| auto p = parser("switch(a) { }"); |
| auto e = p->switch_stmt(); |
| 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::SwitchStatement>()); |
| ASSERT_EQ(e->body.size(), 0u); |
| } |
| |
| TEST_F(ParserImplTest, SwitchStmt_DefaultInMiddle) { |
| auto p = parser(R"(switch(a) { |
| case 1: {} |
| default: {} |
| case 2: {} |
| })"); |
| auto e = p->switch_stmt(); |
| 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::SwitchStatement>()); |
| |
| ASSERT_EQ(e->body.size(), 3u); |
| ASSERT_FALSE(e->body[0]->IsDefault()); |
| ASSERT_TRUE(e->body[1]->IsDefault()); |
| ASSERT_FALSE(e->body[2]->IsDefault()); |
| } |
| |
| TEST_F(ParserImplTest, SwitchStmt_InvalidExpression) { |
| auto p = parser("switch(a=b) {}"); |
| auto e = p->switch_stmt(); |
| EXPECT_FALSE(e.matched); |
| EXPECT_TRUE(e.errored); |
| EXPECT_EQ(e.value, nullptr); |
| EXPECT_TRUE(p->has_error()); |
| EXPECT_EQ(p->error(), "1:9: expected ')'"); |
| } |
| |
| TEST_F(ParserImplTest, SwitchStmt_MissingExpression) { |
| auto p = parser("switch {}"); |
| auto e = p->switch_stmt(); |
| EXPECT_FALSE(e.matched); |
| EXPECT_TRUE(e.errored); |
| EXPECT_EQ(e.value, nullptr); |
| EXPECT_TRUE(p->has_error()); |
| EXPECT_EQ(p->error(), "1:8: expected '('"); |
| } |
| |
| TEST_F(ParserImplTest, SwitchStmt_MissingBracketLeft) { |
| auto p = parser("switch(a) }"); |
| auto e = p->switch_stmt(); |
| EXPECT_FALSE(e.matched); |
| EXPECT_TRUE(e.errored); |
| EXPECT_EQ(e.value, nullptr); |
| EXPECT_TRUE(p->has_error()); |
| EXPECT_EQ(p->error(), "1:11: expected '{' for switch statement"); |
| } |
| |
| TEST_F(ParserImplTest, SwitchStmt_MissingBracketRight) { |
| auto p = parser("switch(a) {"); |
| auto e = p->switch_stmt(); |
| EXPECT_FALSE(e.matched); |
| EXPECT_TRUE(e.errored); |
| EXPECT_EQ(e.value, nullptr); |
| EXPECT_TRUE(p->has_error()); |
| EXPECT_EQ(p->error(), "1:12: expected '}' for switch statement"); |
| } |
| |
| TEST_F(ParserImplTest, SwitchStmt_InvalidBody) { |
| auto p = parser(R"(switch(a) { |
| case: {} |
| })"); |
| auto e = p->switch_stmt(); |
| EXPECT_FALSE(e.matched); |
| EXPECT_TRUE(e.errored); |
| EXPECT_EQ(e.value, nullptr); |
| EXPECT_TRUE(p->has_error()); |
| EXPECT_EQ(p->error(), "2:7: unable to parse case selectors"); |
| } |
| |
| } // namespace |
| } // namespace wgsl |
| } // namespace reader |
| } // namespace tint |