| // 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/call_expression.h" |
| #include "src/ast/identifier_expression.h" |
| #include "src/ast/member_accessor_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, PostfixExpression_Array_ConstantIndex) { |
| auto* p = parser("a[1]"); |
| auto e = p->postfix_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* c = ary->idx_expr()->AsConstructor()->AsScalarConstructor(); |
| ASSERT_TRUE(c->literal()->IsSint()); |
| EXPECT_EQ(c->literal()->AsSint()->value(), 1); |
| } |
| |
| TEST_F(ParserImplTest, PostfixExpression_Array_ExpressionIndex) { |
| auto* p = parser("a[1 + b / 4]"); |
| auto e = p->postfix_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()->IsBinary()); |
| } |
| |
| TEST_F(ParserImplTest, PostfixExpression_Array_MissingIndex) { |
| auto* p = parser("a[]"); |
| auto e = p->postfix_expression(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:3: unable to parse expression inside []"); |
| } |
| |
| TEST_F(ParserImplTest, PostfixExpression_Array_MissingRightBrace) { |
| auto* p = parser("a[1"); |
| auto e = p->postfix_expression(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:4: missing ] for array accessor"); |
| } |
| |
| TEST_F(ParserImplTest, PostfixExpression_Array_InvalidIndex) { |
| auto* p = parser("a[if(a() {})]"); |
| auto e = p->postfix_expression(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:3: unable to parse expression inside []"); |
| } |
| |
| TEST_F(ParserImplTest, PostfixExpression_Call_Empty) { |
| auto* p = parser("a()"); |
| auto e = p->postfix_expression(); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| ASSERT_NE(e, nullptr); |
| |
| ASSERT_TRUE(e->IsCall()); |
| auto* c = e->AsCall(); |
| |
| ASSERT_TRUE(c->func()->IsIdentifier()); |
| auto* func = c->func()->AsIdentifier(); |
| EXPECT_EQ(func->name(), "a"); |
| |
| EXPECT_EQ(c->params().size(), 0u); |
| } |
| |
| TEST_F(ParserImplTest, PostfixExpression_Call_WithArgs) { |
| auto* p = parser("std::test(1, b, 2 + 3 / b)"); |
| auto e = p->postfix_expression(); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| ASSERT_NE(e, nullptr); |
| |
| ASSERT_TRUE(e->IsCall()); |
| auto* c = e->AsCall(); |
| |
| ASSERT_TRUE(c->func()->IsIdentifier()); |
| auto* func = c->func()->AsIdentifier(); |
| EXPECT_EQ(func->path(), "std"); |
| EXPECT_EQ(func->name(), "test"); |
| |
| EXPECT_EQ(c->params().size(), 3u); |
| EXPECT_TRUE(c->params()[0]->IsConstructor()); |
| EXPECT_TRUE(c->params()[1]->IsIdentifier()); |
| EXPECT_TRUE(c->params()[2]->IsBinary()); |
| } |
| |
| TEST_F(ParserImplTest, PostfixExpression_Call_InvalidArg) { |
| auto* p = parser("a(if(a) {})"); |
| auto e = p->postfix_expression(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:3: unable to parse argument expression"); |
| } |
| |
| TEST_F(ParserImplTest, PostfixExpression_Call_HangingComma) { |
| auto* p = parser("a(b, )"); |
| auto e = p->postfix_expression(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:6: unable to parse argument expression after comma"); |
| } |
| |
| TEST_F(ParserImplTest, PostfixExpression_Call_MissingRightParen) { |
| auto* p = parser("a("); |
| auto e = p->postfix_expression(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:3: missing ) for call expression"); |
| } |
| |
| TEST_F(ParserImplTest, PostfixExpression_MemberAccessor) { |
| auto* p = parser("a.b"); |
| auto e = p->postfix_expression(); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| ASSERT_NE(e, nullptr); |
| ASSERT_TRUE(e->IsMemberAccessor()); |
| |
| auto* m = e->AsMemberAccessor(); |
| ASSERT_TRUE(m->structure()->IsIdentifier()); |
| EXPECT_EQ(m->structure()->AsIdentifier()->name(), "a"); |
| |
| ASSERT_TRUE(m->member()->IsIdentifier()); |
| EXPECT_EQ(m->member()->AsIdentifier()->name(), "b"); |
| } |
| |
| TEST_F(ParserImplTest, PostfixExpression_MemberAccesssor_InvalidIdent) { |
| auto* p = parser("a.if"); |
| auto e = p->postfix_expression(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:3: missing identifier for member accessor"); |
| } |
| |
| TEST_F(ParserImplTest, PostfixExpression_MemberAccessor_MissingIdent) { |
| auto* p = parser("a."); |
| auto e = p->postfix_expression(); |
| ASSERT_TRUE(p->has_error()); |
| ASSERT_EQ(e, nullptr); |
| EXPECT_EQ(p->error(), "1:3: missing identifier for member accessor"); |
| } |
| |
| TEST_F(ParserImplTest, PostfixExpression_NonMatch_returnLHS) { |
| auto* p = parser("a b"); |
| auto e = p->postfix_expression(); |
| ASSERT_FALSE(p->has_error()) << p->error(); |
| ASSERT_NE(e, nullptr); |
| ASSERT_TRUE(e->IsIdentifier()); |
| } |
| |
| } // namespace |
| } // namespace wgsl |
| } // namespace reader |
| } // namespace tint |