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https://github.com/encounter/dawn-cmake.git
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acf7643518
Change-Id: I842483890b369d63c23dba475b6738bffe5cfdbd Reviewed-on: https://dawn-review.googlesource.com/c/tint/+/34319 Reviewed-by: dan sinclair <dsinclair@chromium.org>
84 lines
2.8 KiB
C++
84 lines
2.8 KiB
C++
// Copyright 2020 The Tint Authors.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "gtest/gtest.h"
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#include "src/ast/binary_expression.h"
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#include "src/ast/bool_literal.h"
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#include "src/ast/identifier_expression.h"
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#include "src/ast/scalar_constructor_expression.h"
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#include "src/reader/wgsl/parser_impl.h"
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#include "src/reader/wgsl/parser_impl_test_helper.h"
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namespace tint {
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namespace reader {
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namespace wgsl {
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namespace {
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TEST_F(ParserImplTest, LogicalAndExpression_Parses) {
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auto p = parser("a && true");
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auto e = p->logical_and_expression();
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EXPECT_TRUE(e.matched);
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EXPECT_FALSE(e.errored);
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EXPECT_FALSE(p->has_error()) << p->error();
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ASSERT_NE(e.value, nullptr);
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ASSERT_TRUE(e->Is<ast::BinaryExpression>());
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auto* rel = e->As<ast::BinaryExpression>();
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EXPECT_EQ(ast::BinaryOp::kLogicalAnd, rel->op());
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ASSERT_TRUE(rel->lhs()->Is<ast::IdentifierExpression>());
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auto* ident = rel->lhs()->As<ast::IdentifierExpression>();
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EXPECT_EQ(ident->name(), "a");
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ASSERT_TRUE(rel->rhs()->Is<ast::ConstructorExpression>());
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ASSERT_TRUE(rel->rhs()->Is<ast::ScalarConstructorExpression>());
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auto* init = rel->rhs()->As<ast::ScalarConstructorExpression>();
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ASSERT_TRUE(init->literal()->Is<ast::BoolLiteral>());
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ASSERT_TRUE(init->literal()->As<ast::BoolLiteral>()->IsTrue());
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}
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TEST_F(ParserImplTest, LogicalAndExpression_InvalidLHS) {
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auto p = parser("if (a) {} && true");
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auto e = p->logical_and_expression();
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EXPECT_FALSE(e.matched);
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EXPECT_FALSE(e.errored);
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EXPECT_FALSE(p->has_error()) << p->error();
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EXPECT_EQ(e.value, nullptr);
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}
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TEST_F(ParserImplTest, LogicalAndExpression_InvalidRHS) {
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auto p = parser("true && if (a) {}");
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auto e = p->logical_and_expression();
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EXPECT_FALSE(e.matched);
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EXPECT_TRUE(e.errored);
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EXPECT_EQ(e.value, nullptr);
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EXPECT_TRUE(p->has_error());
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EXPECT_EQ(p->error(), "1:9: unable to parse right side of && expression");
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}
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TEST_F(ParserImplTest, LogicalAndExpression_NoOr_ReturnsLHS) {
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auto p = parser("a true");
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auto e = p->logical_and_expression();
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EXPECT_TRUE(e.matched);
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EXPECT_FALSE(e.errored);
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EXPECT_FALSE(p->has_error()) << p->error();
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ASSERT_NE(e.value, nullptr);
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ASSERT_TRUE(e->Is<ast::IdentifierExpression>());
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}
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} // namespace
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} // namespace wgsl
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} // namespace reader
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} // namespace tint
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