| // 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/assignment_statement.h" |
| #include "src/ast/identifier_expression.h" |
| #include "src/ast/literal.h" |
| #include "src/ast/member_accessor_expression.h" |
| #include "src/ast/scalar_constructor_expression.h" |
| #include "src/ast/sint_literal.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, AssignmentStmt_Parses_ToVariable) { |
| auto* p = parser("a = 123"); |
| auto e = p->assignment_stmt(); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| ASSERT_NE(e, nullptr); |
| |
| ASSERT_TRUE(e->IsAssign()); |
| ASSERT_NE(e->lhs(), nullptr); |
| ASSERT_NE(e->rhs(), nullptr); |
| |
| ASSERT_TRUE(e->lhs()->IsIdentifier()); |
| auto* ident = e->lhs()->AsIdentifier(); |
| EXPECT_EQ(ident->name(), "a"); |
| |
| ASSERT_TRUE(e->rhs()->IsConstructor()); |
| ASSERT_TRUE(e->rhs()->AsConstructor()->IsScalarConstructor()); |
| |
| auto* init = e->rhs()->AsConstructor()->AsScalarConstructor(); |
| ASSERT_NE(init->literal(), nullptr); |
| ASSERT_TRUE(init->literal()->IsSint()); |
| EXPECT_EQ(init->literal()->AsSint()->value(), 123); |
| } |
| |
| TEST_F(ParserImplTest, AssignmentStmt_Parses_ToMember) { |
| auto* p = parser("a.b.c[2].d = 123"); |
| auto e = p->assignment_stmt(); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| ASSERT_NE(e, nullptr); |
| |
| ASSERT_TRUE(e->IsAssign()); |
| ASSERT_NE(e->lhs(), nullptr); |
| ASSERT_NE(e->rhs(), nullptr); |
| |
| ASSERT_TRUE(e->rhs()->IsConstructor()); |
| ASSERT_TRUE(e->rhs()->AsConstructor()->IsScalarConstructor()); |
| auto* init = e->rhs()->AsConstructor()->AsScalarConstructor(); |
| ASSERT_NE(init->literal(), nullptr); |
| ASSERT_TRUE(init->literal()->IsSint()); |
| EXPECT_EQ(init->literal()->AsSint()->value(), 123); |
| |
| ASSERT_TRUE(e->lhs()->IsMemberAccessor()); |
| auto* mem = e->lhs()->AsMemberAccessor(); |
| |
| ASSERT_TRUE(mem->member()->IsIdentifier()); |
| auto* ident = mem->member()->AsIdentifier(); |
| EXPECT_EQ(ident->name(), "d"); |
| |
| ASSERT_TRUE(mem->structure()->IsArrayAccessor()); |
| auto* ary = mem->structure()->AsArrayAccessor(); |
| |
| ASSERT_TRUE(ary->idx_expr()->IsConstructor()); |
| ASSERT_TRUE(ary->idx_expr()->AsConstructor()->IsScalarConstructor()); |
| init = ary->idx_expr()->AsConstructor()->AsScalarConstructor(); |
| ASSERT_NE(init->literal(), nullptr); |
| ASSERT_TRUE(init->literal()->IsSint()); |
| EXPECT_EQ(init->literal()->AsSint()->value(), 2); |
| |
| ASSERT_TRUE(ary->array()->IsMemberAccessor()); |
| mem = ary->array()->AsMemberAccessor(); |
| ASSERT_TRUE(mem->member()->IsIdentifier()); |
| ident = mem->member()->AsIdentifier(); |
| EXPECT_EQ(ident->name(), "c"); |
| |
| ASSERT_TRUE(mem->structure()->IsMemberAccessor()); |
| mem = mem->structure()->AsMemberAccessor(); |
| |
| ASSERT_TRUE(mem->structure()->IsIdentifier()); |
| ident = mem->structure()->AsIdentifier(); |
| EXPECT_EQ(ident->name(), "a"); |
| |
| ASSERT_TRUE(mem->member()->IsIdentifier()); |
| ident = mem->member()->AsIdentifier(); |
| EXPECT_EQ(ident->name(), "b"); |
| } |
| |
| TEST_F(ParserImplTest, AssignmentStmt_MissingEqual) { |
| auto* p = parser("a.b.c[2].d 123"); |
| auto e = p->assignment_stmt(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:12: missing = for assignment"); |
| } |
| |
| TEST_F(ParserImplTest, AssignmentStmt_InvalidLHS) { |
| auto* p = parser("if (true) {} = 123"); |
| auto e = p->assignment_stmt(); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| ASSERT_EQ(e, nullptr); |
| } |
| |
| TEST_F(ParserImplTest, AssignmentStmt_InvalidRHS) { |
| auto* p = parser("a.b.c[2].d = if (true) {}"); |
| auto e = p->assignment_stmt(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:14: unable to parse right side of assignment"); |
| } |
| |
| } // namespace |
| } // namespace wgsl |
| } // namespace reader |
| } // namespace tint |