| // Copyright 2022 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, IncrementDecrementStmt_Increment) { |
| auto p = parser("a++"); |
| auto e = p->assignment_stmt(); |
| EXPECT_TRUE(e.matched); |
| EXPECT_FALSE(e.errored); |
| EXPECT_FALSE(p->has_error()) << p->error(); |
| ASSERT_NE(e.value, nullptr); |
| |
| auto* i = e->As<ast::IncrementDecrementStatement>(); |
| ASSERT_NE(i, nullptr); |
| ASSERT_NE(i->lhs, nullptr); |
| |
| ASSERT_TRUE(i->lhs->Is<ast::IdentifierExpression>()); |
| auto* ident = i->lhs->As<ast::IdentifierExpression>(); |
| EXPECT_EQ(ident->symbol, p->builder().Symbols().Get("a")); |
| |
| EXPECT_TRUE(i->increment); |
| } |
| |
| TEST_F(ParserImplTest, IncrementDecrementStmt_Decrement) { |
| auto p = parser("a--"); |
| auto e = p->assignment_stmt(); |
| EXPECT_TRUE(e.matched); |
| EXPECT_FALSE(e.errored); |
| EXPECT_FALSE(p->has_error()) << p->error(); |
| ASSERT_NE(e.value, nullptr); |
| |
| auto* i = e->As<ast::IncrementDecrementStatement>(); |
| ASSERT_NE(i, nullptr); |
| ASSERT_NE(i->lhs, nullptr); |
| |
| ASSERT_TRUE(i->lhs->Is<ast::IdentifierExpression>()); |
| auto* ident = i->lhs->As<ast::IdentifierExpression>(); |
| EXPECT_EQ(ident->symbol, p->builder().Symbols().Get("a")); |
| |
| EXPECT_FALSE(i->increment); |
| } |
| |
| TEST_F(ParserImplTest, IncrementDecrementStmt_Parenthesized) { |
| auto p = parser("(a)++"); |
| auto e = p->assignment_stmt(); |
| EXPECT_TRUE(e.matched); |
| EXPECT_FALSE(e.errored); |
| EXPECT_FALSE(p->has_error()) << p->error(); |
| ASSERT_NE(e.value, nullptr); |
| |
| auto* i = e->As<ast::IncrementDecrementStatement>(); |
| ASSERT_NE(i, nullptr); |
| ASSERT_NE(i->lhs, nullptr); |
| |
| ASSERT_TRUE(i->lhs->Is<ast::IdentifierExpression>()); |
| auto* ident = i->lhs->As<ast::IdentifierExpression>(); |
| EXPECT_EQ(ident->symbol, p->builder().Symbols().Get("a")); |
| |
| EXPECT_TRUE(i->increment); |
| } |
| |
| TEST_F(ParserImplTest, IncrementDecrementStmt_ToMember) { |
| auto p = parser("a.b.c[2].d++"); |
| auto e = p->assignment_stmt(); |
| EXPECT_TRUE(e.matched); |
| EXPECT_FALSE(e.errored); |
| EXPECT_FALSE(p->has_error()) << p->error(); |
| ASSERT_NE(e.value, nullptr); |
| |
| auto* i = e->As<ast::IncrementDecrementStatement>(); |
| ASSERT_NE(i, nullptr); |
| ASSERT_NE(i->lhs, nullptr); |
| EXPECT_TRUE(i->increment); |
| |
| ASSERT_TRUE(i->lhs->Is<ast::MemberAccessorExpression>()); |
| auto* mem = i->lhs->As<ast::MemberAccessorExpression>(); |
| |
| ASSERT_TRUE(mem->member->Is<ast::IdentifierExpression>()); |
| auto* ident = mem->member->As<ast::IdentifierExpression>(); |
| EXPECT_EQ(ident->symbol, p->builder().Symbols().Get("d")); |
| |
| ASSERT_TRUE(mem->structure->Is<ast::IndexAccessorExpression>()); |
| auto* idx = mem->structure->As<ast::IndexAccessorExpression>(); |
| |
| ASSERT_NE(idx->index, nullptr); |
| ASSERT_TRUE(idx->index->Is<ast::IntLiteralExpression>()); |
| EXPECT_EQ(idx->index->As<ast::IntLiteralExpression>()->value, 2); |
| |
| ASSERT_TRUE(idx->object->Is<ast::MemberAccessorExpression>()); |
| mem = idx->object->As<ast::MemberAccessorExpression>(); |
| ASSERT_TRUE(mem->member->Is<ast::IdentifierExpression>()); |
| ident = mem->member->As<ast::IdentifierExpression>(); |
| EXPECT_EQ(ident->symbol, p->builder().Symbols().Get("c")); |
| |
| ASSERT_TRUE(mem->structure->Is<ast::MemberAccessorExpression>()); |
| mem = mem->structure->As<ast::MemberAccessorExpression>(); |
| |
| ASSERT_TRUE(mem->structure->Is<ast::IdentifierExpression>()); |
| ident = mem->structure->As<ast::IdentifierExpression>(); |
| EXPECT_EQ(ident->symbol, p->builder().Symbols().Get("a")); |
| |
| ASSERT_TRUE(mem->member->Is<ast::IdentifierExpression>()); |
| ident = mem->member->As<ast::IdentifierExpression>(); |
| EXPECT_EQ(ident->symbol, p->builder().Symbols().Get("b")); |
| } |
| |
| TEST_F(ParserImplTest, IncrementDecrementStmt_InvalidLHS) { |
| auto p = parser("{}++"); |
| auto e = p->assignment_stmt(); |
| EXPECT_FALSE(e.matched); |
| EXPECT_FALSE(e.errored); |
| EXPECT_FALSE(p->has_error()) << p->error(); |
| EXPECT_EQ(e.value, nullptr); |
| } |
| |
| } // namespace |
| } // namespace tint::reader::wgsl |