blob: ee9118ac514ebae84617d42f839bda3d2f79db6c [file] [log] [blame]
// 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/lang/wgsl/reader/parser/helper_test.h"
namespace tint::wgsl::reader {
namespace {
TEST_F(WGSLParserTest, IncrementDecrementStmt_Increment) {
auto p = parser("a++");
auto e = p->variable_updating_statement();
EXPECT_TRUE(e.matched);
EXPECT_FALSE(e.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(e.value, nullptr);
auto* i = e->As<ast::IncrementDecrementStatement>();
ASSERT_NE(i, nullptr);
ASSERT_NE(i->lhs, nullptr);
ASSERT_TRUE(i->lhs->Is<ast::IdentifierExpression>());
auto* ident_expr = i->lhs->As<ast::IdentifierExpression>();
EXPECT_EQ(ident_expr->identifier->symbol, p->builder().Symbols().Get("a"));
EXPECT_TRUE(i->increment);
}
TEST_F(WGSLParserTest, IncrementDecrementStmt_Decrement) {
auto p = parser("a--");
auto e = p->variable_updating_statement();
EXPECT_TRUE(e.matched);
EXPECT_FALSE(e.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(e.value, nullptr);
auto* i = e->As<ast::IncrementDecrementStatement>();
ASSERT_NE(i, nullptr);
ASSERT_NE(i->lhs, nullptr);
ASSERT_TRUE(i->lhs->Is<ast::IdentifierExpression>());
auto* ident_expr = i->lhs->As<ast::IdentifierExpression>();
EXPECT_EQ(ident_expr->identifier->symbol, p->builder().Symbols().Get("a"));
EXPECT_FALSE(i->increment);
}
TEST_F(WGSLParserTest, IncrementDecrementStmt_Parenthesized) {
auto p = parser("(a)++");
auto e = p->variable_updating_statement();
EXPECT_TRUE(e.matched);
EXPECT_FALSE(e.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(e.value, nullptr);
auto* i = e->As<ast::IncrementDecrementStatement>();
ASSERT_NE(i, nullptr);
ASSERT_NE(i->lhs, nullptr);
ASSERT_TRUE(i->lhs->Is<ast::IdentifierExpression>());
auto* ident_expr = i->lhs->As<ast::IdentifierExpression>();
EXPECT_EQ(ident_expr->identifier->symbol, p->builder().Symbols().Get("a"));
EXPECT_TRUE(i->increment);
}
TEST_F(WGSLParserTest, IncrementDecrementStmt_ToMember) {
auto p = parser("a.b.c[2].d++");
auto e = p->variable_updating_statement();
EXPECT_TRUE(e.matched);
EXPECT_FALSE(e.errored);
EXPECT_FALSE(p->has_error()) << p->error();
ASSERT_NE(e.value, nullptr);
auto* i = e->As<ast::IncrementDecrementStatement>();
ASSERT_NE(i, nullptr);
ASSERT_NE(i->lhs, nullptr);
EXPECT_TRUE(i->increment);
ASSERT_TRUE(i->lhs->Is<ast::MemberAccessorExpression>());
auto* mem = i->lhs->As<ast::MemberAccessorExpression>();
EXPECT_EQ(mem->member->symbol, p->builder().Symbols().Get("d"));
ASSERT_TRUE(mem->object->Is<ast::IndexAccessorExpression>());
auto* idx = mem->object->As<ast::IndexAccessorExpression>();
ASSERT_NE(idx->index, nullptr);
ASSERT_TRUE(idx->index->Is<ast::IntLiteralExpression>());
EXPECT_EQ(idx->index->As<ast::IntLiteralExpression>()->value, 2);
ASSERT_TRUE(idx->object->Is<ast::MemberAccessorExpression>());
mem = idx->object->As<ast::MemberAccessorExpression>();
EXPECT_EQ(mem->member->symbol, p->builder().Symbols().Get("c"));
ASSERT_TRUE(mem->object->Is<ast::MemberAccessorExpression>());
mem = mem->object->As<ast::MemberAccessorExpression>();
ASSERT_TRUE(mem->object->Is<ast::IdentifierExpression>());
auto* ident_expr = mem->object->As<ast::IdentifierExpression>();
EXPECT_EQ(ident_expr->identifier->symbol, p->builder().Symbols().Get("a"));
EXPECT_EQ(mem->member->symbol, p->builder().Symbols().Get("b"));
}
TEST_F(WGSLParserTest, IncrementDecrementStmt_InvalidLHS) {
auto p = parser("{}++");
auto e = p->variable_updating_statement();
EXPECT_FALSE(e.matched);
EXPECT_FALSE(e.errored);
EXPECT_FALSE(p->has_error()) << p->error();
EXPECT_EQ(e.value, nullptr);
}
} // namespace
} // namespace tint::wgsl::reader