| // 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/array_accessor_expression.h" |
| #include "src/ast/identifier_expression.h" |
| #include "src/ast/scalar_constructor_expression.h" |
| #include "src/ast/sint_literal.h" |
| #include "src/ast/unary_op_expression.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, UnaryExpression_Postix) { |
| auto* p = parser("a[2]"); |
| auto e = p->unary_expression(); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| ASSERT_NE(e, nullptr); |
| |
| ASSERT_TRUE(e->IsArrayAccessor()); |
| auto* ary = e->AsArrayAccessor(); |
| ASSERT_TRUE(ary->array()->IsIdentifier()); |
| auto* ident = ary->array()->AsIdentifier(); |
| EXPECT_EQ(ident->name(), "a"); |
| |
| ASSERT_TRUE(ary->idx_expr()->IsConstructor()); |
| ASSERT_TRUE(ary->idx_expr()->AsConstructor()->IsScalarConstructor()); |
| auto* init = ary->idx_expr()->AsConstructor()->AsScalarConstructor(); |
| ASSERT_TRUE(init->literal()->IsSint()); |
| ASSERT_EQ(init->literal()->AsSint()->value(), 2); |
| } |
| |
| TEST_F(ParserImplTest, UnaryExpression_Minus) { |
| auto* p = parser("- 1"); |
| auto e = p->unary_expression(); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| ASSERT_NE(e, nullptr); |
| ASSERT_TRUE(e->IsUnaryOp()); |
| |
| auto* u = e->AsUnaryOp(); |
| ASSERT_EQ(u->op(), ast::UnaryOp::kNegation); |
| |
| ASSERT_TRUE(u->expr()->IsConstructor()); |
| ASSERT_TRUE(u->expr()->AsConstructor()->IsScalarConstructor()); |
| |
| auto* init = u->expr()->AsConstructor()->AsScalarConstructor(); |
| ASSERT_TRUE(init->literal()->IsSint()); |
| EXPECT_EQ(init->literal()->AsSint()->value(), 1); |
| } |
| |
| TEST_F(ParserImplTest, UnaryExpression_Minus_InvalidRHS) { |
| auto* p = parser("-if(a) {}"); |
| auto e = p->unary_expression(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:2: unable to parse right side of - expression"); |
| } |
| |
| TEST_F(ParserImplTest, UnaryExpression_Bang) { |
| auto* p = parser("!1"); |
| auto e = p->unary_expression(); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| ASSERT_NE(e, nullptr); |
| ASSERT_TRUE(e->IsUnaryOp()); |
| |
| auto* u = e->AsUnaryOp(); |
| ASSERT_EQ(u->op(), ast::UnaryOp::kNot); |
| |
| ASSERT_TRUE(u->expr()->IsConstructor()); |
| ASSERT_TRUE(u->expr()->AsConstructor()->IsScalarConstructor()); |
| |
| auto* init = u->expr()->AsConstructor()->AsScalarConstructor(); |
| ASSERT_TRUE(init->literal()->IsSint()); |
| EXPECT_EQ(init->literal()->AsSint()->value(), 1); |
| } |
| |
| TEST_F(ParserImplTest, UnaryExpression_Bang_InvalidRHS) { |
| auto* p = parser("!if (a) {}"); |
| auto e = p->unary_expression(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:2: unable to parse right side of ! expression"); |
| } |
| |
| } // namespace |
| } // namespace wgsl |
| } // namespace reader |
| } // namespace tint |