blob: 98694c5e6ac8ac18fc973dd9c845c2839ada8e1a [file] [log] [blame]
// 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 "src/reader/wgsl/parser_impl_test_helper.h"
namespace tint {
namespace reader {
namespace wgsl {
namespace {
TEST_F(ParserImplTest, ShiftExpression_Parses_ShiftLeft) {
auto p = parser("a << true");
auto e = p->shift_expression();
EXPECT_TRUE(e.matched);
EXPECT_FALSE(e.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(e.value, nullptr);
ASSERT_TRUE(e->Is<ast::BinaryExpression>());
auto* rel = e->As<ast::BinaryExpression>();
EXPECT_EQ(ast::BinaryOp::kShiftLeft, rel->op);
ASSERT_TRUE(rel->lhs->Is<ast::IdentifierExpression>());
auto* ident = rel->lhs->As<ast::IdentifierExpression>();
EXPECT_EQ(ident->symbol, p->builder().Symbols().Get("a"));
ASSERT_TRUE(rel->rhs->Is<ast::BoolLiteralExpression>());
ASSERT_TRUE(rel->rhs->As<ast::BoolLiteralExpression>()->value);
}
TEST_F(ParserImplTest, ShiftExpression_Parses_ShiftRight) {
auto p = parser("a >> true");
auto e = p->shift_expression();
EXPECT_TRUE(e.matched);
EXPECT_FALSE(e.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(e.value, nullptr);
ASSERT_TRUE(e->Is<ast::BinaryExpression>());
auto* rel = e->As<ast::BinaryExpression>();
EXPECT_EQ(ast::BinaryOp::kShiftRight, rel->op);
ASSERT_TRUE(rel->lhs->Is<ast::IdentifierExpression>());
auto* ident = rel->lhs->As<ast::IdentifierExpression>();
EXPECT_EQ(ident->symbol, p->builder().Symbols().Get("a"));
ASSERT_TRUE(rel->rhs->Is<ast::BoolLiteralExpression>());
ASSERT_TRUE(rel->rhs->As<ast::BoolLiteralExpression>()->value);
}
TEST_F(ParserImplTest, ShiftExpression_InvalidSpaceLeft) {
auto p = parser("a < < true");
auto e = p->shift_expression();
EXPECT_TRUE(e.matched);
EXPECT_FALSE(e.errored);
ASSERT_NE(e.value, nullptr);
EXPECT_FALSE(e.value->Is<ast::BinaryExpression>());
}
TEST_F(ParserImplTest, ShiftExpression_InvalidSpaceRight) {
auto p = parser("a > > true");
auto e = p->shift_expression();
EXPECT_TRUE(e.matched);
EXPECT_FALSE(e.errored);
ASSERT_NE(e.value, nullptr);
EXPECT_FALSE(e.value->Is<ast::BinaryExpression>());
}
TEST_F(ParserImplTest, ShiftExpression_InvalidLHS) {
auto p = parser("if (a) {} << true");
auto e = p->shift_expression();
EXPECT_FALSE(e.matched);
EXPECT_FALSE(e.errored);
EXPECT_FALSE(p->has_error()) << p->error();
EXPECT_EQ(e.value, nullptr);
}
TEST_F(ParserImplTest, ShiftExpression_InvalidRHS) {
auto p = parser("true << if (a) {}");
auto e = p->shift_expression();
EXPECT_FALSE(e.matched);
EXPECT_TRUE(e.errored);
EXPECT_TRUE(p->has_error());
EXPECT_EQ(e.value, nullptr);
EXPECT_EQ(p->error(), "1:9: unable to parse right side of << expression");
}
TEST_F(ParserImplTest, ShiftExpression_NoOr_ReturnsLHS) {
auto p = parser("a true");
auto e = p->shift_expression();
EXPECT_TRUE(e.matched);
EXPECT_FALSE(e.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(e.value, nullptr);
ASSERT_TRUE(e->Is<ast::IdentifierExpression>());
}
} // namespace
} // namespace wgsl
} // namespace reader
} // namespace tint