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// 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/tint/writer/wgsl/test_helper.h"
namespace tint::writer::wgsl {
namespace {
using WgslUnaryOpTest = TestHelper;
TEST_F(WgslUnaryOpTest, AddressOf) {
GlobalVar("expr", ty.f32(), type::AddressSpace::kPrivate);
auto* op = create<ast::UnaryOpExpression>(ast::UnaryOp::kAddressOf, Expr("expr"));
WrapInFunction(op);
GeneratorImpl& gen = Build();
std::stringstream out;
ASSERT_TRUE(gen.EmitExpression(out, op)) << gen.error();
EXPECT_EQ(out.str(), "&(expr)");
}
TEST_F(WgslUnaryOpTest, Complement) {
GlobalVar("expr", ty.u32(), type::AddressSpace::kPrivate);
auto* op = create<ast::UnaryOpExpression>(ast::UnaryOp::kComplement, Expr("expr"));
WrapInFunction(op);
GeneratorImpl& gen = Build();
std::stringstream out;
ASSERT_TRUE(gen.EmitExpression(out, op)) << gen.error();
EXPECT_EQ(out.str(), "~(expr)");
}
TEST_F(WgslUnaryOpTest, Indirection) {
GlobalVar("G", ty.f32(), type::AddressSpace::kPrivate);
auto* p = Let("expr", create<ast::UnaryOpExpression>(ast::UnaryOp::kAddressOf, Expr("G")));
auto* op = create<ast::UnaryOpExpression>(ast::UnaryOp::kIndirection, Expr("expr"));
WrapInFunction(p, op);
GeneratorImpl& gen = Build();
std::stringstream out;
ASSERT_TRUE(gen.EmitExpression(out, op)) << gen.error();
EXPECT_EQ(out.str(), "*(expr)");
}
TEST_F(WgslUnaryOpTest, Not) {
GlobalVar("expr", ty.bool_(), type::AddressSpace::kPrivate);
auto* op = create<ast::UnaryOpExpression>(ast::UnaryOp::kNot, Expr("expr"));
WrapInFunction(op);
GeneratorImpl& gen = Build();
std::stringstream out;
ASSERT_TRUE(gen.EmitExpression(out, op)) << gen.error();
EXPECT_EQ(out.str(), "!(expr)");
}
TEST_F(WgslUnaryOpTest, Negation) {
GlobalVar("expr", ty.i32(), type::AddressSpace::kPrivate);
auto* op = create<ast::UnaryOpExpression>(ast::UnaryOp::kNegation, Expr("expr"));
WrapInFunction(op);
GeneratorImpl& gen = Build();
std::stringstream out;
ASSERT_TRUE(gen.EmitExpression(out, op)) << gen.error();
EXPECT_EQ(out.str(), "-(expr)");
}
} // namespace
} // namespace tint::writer::wgsl