| // 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 "gtest/gtest.h" |
| #include "src/ast/else_statement.h" |
| #include "src/ast/if_statement.h" |
| #include "src/reader/wgsl/parser_impl.h" |
| #include "src/reader/wgsl/parser_impl_test_helper.h" |
| |
| namespace tint { |
| namespace reader { |
| namespace wgsl { |
| namespace { |
| |
| TEST_F(ParserImplTest, IfStmt) { |
| auto* p = parser("if (a == 4) { a = b; c = d; }"); |
| auto e = p->if_stmt(); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| ASSERT_NE(e, nullptr); |
| |
| ASSERT_TRUE(e->IsIf()); |
| ASSERT_NE(e->condition(), nullptr); |
| ASSERT_TRUE(e->condition()->IsBinary()); |
| EXPECT_EQ(e->body().size(), 2u); |
| EXPECT_EQ(e->else_statements().size(), 0u); |
| } |
| |
| TEST_F(ParserImplTest, IfStmt_WithElse) { |
| auto* p = |
| parser("if (a == 4) { a = b; c = d; } elseif(c) { d = 2; } else {}"); |
| auto e = p->if_stmt(); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| ASSERT_NE(e, nullptr); |
| |
| ASSERT_TRUE(e->IsIf()); |
| ASSERT_NE(e->condition(), nullptr); |
| ASSERT_TRUE(e->condition()->IsBinary()); |
| EXPECT_EQ(e->body().size(), 2u); |
| |
| ASSERT_EQ(e->else_statements().size(), 2u); |
| ASSERT_NE(e->else_statements()[0]->condition(), nullptr); |
| ASSERT_TRUE(e->else_statements()[0]->condition()->IsIdentifier()); |
| EXPECT_EQ(e->else_statements()[0]->body().size(), 1u); |
| |
| ASSERT_EQ(e->else_statements()[1]->condition(), nullptr); |
| EXPECT_EQ(e->else_statements()[1]->body().size(), 0u); |
| } |
| |
| TEST_F(ParserImplTest, IfStmt_InvalidCondition) { |
| auto* p = parser("if (a = 3) {}"); |
| auto e = p->if_stmt(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:7: expected )"); |
| } |
| |
| TEST_F(ParserImplTest, IfStmt_MissingCondition) { |
| auto* p = parser("if {}"); |
| auto e = p->if_stmt(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:4: expected ("); |
| } |
| |
| TEST_F(ParserImplTest, IfStmt_InvalidBody) { |
| auto* p = parser("if (a) { fn main() -> void {}}"); |
| auto e = p->if_stmt(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:10: missing }"); |
| } |
| |
| TEST_F(ParserImplTest, IfStmt_MissingBody) { |
| auto* p = parser("if (a)"); |
| auto e = p->if_stmt(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:7: missing {"); |
| } |
| |
| TEST_F(ParserImplTest, IfStmt_InvalidElseif) { |
| auto* p = parser("if (a) {} elseif (a) { fn main() -> a{}}"); |
| auto e = p->if_stmt(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:24: missing }"); |
| } |
| |
| TEST_F(ParserImplTest, IfStmt_InvalidElse) { |
| auto* p = parser("if (a) {} else { fn main() -> a{}}"); |
| auto e = p->if_stmt(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:18: missing }"); |
| } |
| |
| } // namespace |
| } // namespace wgsl |
| } // namespace reader |
| } // namespace tint |