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/*
* Copyright (C) 2020 The Android Open Source Project
*
* 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.
*/
#pragma once
#include <memory>
#include <utility>
namespace android {
namespace aidl {
// nullable/make_nullable provide source-level compatibility between std::opional and std::unique_ptr
// usage:
// nullable<Foo> a;
// nullable<Foo> b = make_nullable<Foo>(...);
// auto c = make_nullable<Foo>(...);
// c.reset();
// c = make_nullable<Foo>(...);
// c = std::move(a);
template <typename T>
using nullable = std::unique_ptr<T>;
template <typename T, typename... Args>
inline nullable<T> make_nullable(Args&&... args) {
return std::make_unique<T>(std::forward<Args>(args)...);
}
} // namespace aidl
} // namespace android
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