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// Copyright 2022 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/tint/reader/wgsl/parser_impl_test_helper.h"
namespace tint::reader::wgsl {
namespace {
TEST_F(ParserImplTest, Expression_InvalidLHS) {
auto p = parser("if (a) {} || true");
auto e = p->expression();
EXPECT_FALSE(e.matched);
EXPECT_FALSE(e.errored);
EXPECT_FALSE(p->has_error()) << p->error();
EXPECT_EQ(e.value, nullptr);
}
TEST_F(ParserImplTest, Expression_Or_Parses) {
auto p = parser("a || true");
auto e = p->expression();
EXPECT_TRUE(e.matched);
EXPECT_FALSE(e.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(e.value, nullptr);
EXPECT_EQ(e->source.range.begin.line, 1u);
EXPECT_EQ(e->source.range.begin.column, 3u);
EXPECT_EQ(e->source.range.end.line, 1u);
EXPECT_EQ(e->source.range.end.column, 5u);
ASSERT_TRUE(e->Is<ast::BinaryExpression>());
auto* rel = e->As<ast::BinaryExpression>();
EXPECT_EQ(ast::BinaryOp::kLogicalOr, 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, Expression_Or_Parses_Multiple) {
auto p = parser("a || true || b");
auto e = p->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>());
// lhs: (a || true)
// rhs: b
auto* rel = e->As<ast::BinaryExpression>();
EXPECT_EQ(ast::BinaryOp::kLogicalOr, rel->op);
ASSERT_TRUE(rel->rhs->Is<ast::IdentifierExpression>());
auto* ident = rel->rhs->As<ast::IdentifierExpression>();
EXPECT_EQ(ident->symbol, p->builder().Symbols().Get("b"));
ASSERT_TRUE(rel->lhs->Is<ast::BinaryExpression>());
// lhs: a
// rhs: true
rel = rel->lhs->As<ast::BinaryExpression>();
EXPECT_EQ(ast::BinaryOp::kLogicalOr, rel->op);
ASSERT_TRUE(rel->lhs->Is<ast::IdentifierExpression>());
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, Expression_Or_InvalidRHS) {
auto p = parser("true || if (a) {}");
auto e = p->expression();
EXPECT_FALSE(e.matched);
EXPECT_TRUE(e.errored);
EXPECT_EQ(e.value, nullptr);
EXPECT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:9: unable to parse right side of || expression");
}
TEST_F(ParserImplTest, Expression_And_Parses) {
auto p = parser("a && true");
auto e = p->expression();
EXPECT_TRUE(e.matched);
EXPECT_FALSE(e.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(e.value, nullptr);
EXPECT_EQ(e->source.range.begin.line, 1u);
EXPECT_EQ(e->source.range.begin.column, 3u);
EXPECT_EQ(e->source.range.end.line, 1u);
EXPECT_EQ(e->source.range.end.column, 5u);
ASSERT_TRUE(e->Is<ast::BinaryExpression>());
auto* rel = e->As<ast::BinaryExpression>();
EXPECT_EQ(ast::BinaryOp::kLogicalAnd, 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, Expression_And_Parses_Multple) {
auto p = parser("a && true && b");
auto e = p->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>());
// lhs: (a && true)
// rhs: b
auto* rel = e->As<ast::BinaryExpression>();
EXPECT_EQ(ast::BinaryOp::kLogicalAnd, rel->op);
ASSERT_TRUE(rel->rhs->Is<ast::IdentifierExpression>());
auto* ident = rel->rhs->As<ast::IdentifierExpression>();
EXPECT_EQ(ident->symbol, p->builder().Symbols().Get("b"));
ASSERT_TRUE(rel->lhs->Is<ast::BinaryExpression>());
// lhs: a
// rhs: true
rel = rel->lhs->As<ast::BinaryExpression>();
ASSERT_TRUE(rel->lhs->Is<ast::IdentifierExpression>());
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, Expression_And_InvalidRHS) {
auto p = parser("true && if (a) {}");
auto e = p->expression();
EXPECT_FALSE(e.matched);
EXPECT_TRUE(e.errored);
EXPECT_EQ(e.value, nullptr);
EXPECT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:9: unable to parse right side of && expression");
}
TEST_F(ParserImplTest, Expression_Mixing_OrWithAnd) {
auto p = parser("a && true || b");
auto e = p->expression();
EXPECT_FALSE(e.matched);
EXPECT_TRUE(e.errored);
EXPECT_EQ(e.value, nullptr);
EXPECT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:11: mixing '&&' and '||' requires parenthesis");
}
TEST_F(ParserImplTest, Expression_Mixing_AndWithOr) {
auto p = parser("a || true && b");
auto e = p->expression();
EXPECT_FALSE(e.matched);
EXPECT_TRUE(e.errored);
EXPECT_EQ(e.value, nullptr);
EXPECT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:11: mixing '||' and '&&' requires parenthesis");
}
TEST_F(ParserImplTest, Expression_Bitwise) {
auto p = parser("a & b");
auto e = p->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::kAnd, 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::IdentifierExpression>());
ident = rel->rhs->As<ast::IdentifierExpression>();
EXPECT_EQ(ident->symbol, p->builder().Symbols().Get("b"));
}
TEST_F(ParserImplTest, Expression_Relational) {
auto p = parser("a <= b");
auto e = p->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::kLessThanEqual, 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::IdentifierExpression>());
ident = rel->rhs->As<ast::IdentifierExpression>();
EXPECT_EQ(ident->symbol, p->builder().Symbols().Get("b"));
}
TEST_F(ParserImplTest, Expression_InvalidUnary) {
auto p = parser("!if || true");
auto e = p->expression();
EXPECT_FALSE(e.matched);
EXPECT_TRUE(e.errored);
EXPECT_EQ(e.value, nullptr);
EXPECT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:2: unable to parse right side of ! expression");
}
TEST_F(ParserImplTest, Expression_InvalidBitwise) {
auto p = parser("a & if");
auto e = p->expression();
EXPECT_FALSE(e.matched);
EXPECT_TRUE(e.errored);
EXPECT_EQ(e.value, nullptr);
EXPECT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:5: unable to parse right side of & expression");
}
TEST_F(ParserImplTest, Expression_InvalidRelational) {
auto p = parser("a <= if");
auto e = p->expression();
EXPECT_FALSE(e.matched);
EXPECT_TRUE(e.errored);
EXPECT_EQ(e.value, nullptr);
EXPECT_TRUE(p->has_error());
EXPECT_EQ(p->error(), "1:6: unable to parse right side of <= expression");
}
} // namespace
} // namespace tint::reader::wgsl