mirror of
https://github.com/LadybirdBrowser/ladybird.git
synced 2024-11-11 01:06:01 +03:00
63 lines
2.1 KiB
C++
63 lines
2.1 KiB
C++
/*
|
|
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
|
|
* All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright notice, this
|
|
* list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <AK/Noncopyable.h>
|
|
#include <AK/StdLibExtras.h>
|
|
|
|
namespace AK {
|
|
|
|
template<typename T>
|
|
class NeverDestroyed {
|
|
AK_MAKE_NONCOPYABLE(NeverDestroyed)
|
|
AK_MAKE_NONMOVABLE(NeverDestroyed)
|
|
public:
|
|
template<typename... Args>
|
|
NeverDestroyed(Args... args)
|
|
{
|
|
new (storage) T(forward<Args>(args)...);
|
|
}
|
|
|
|
~NeverDestroyed() = default;
|
|
|
|
T* operator->() { return &get(); }
|
|
const T* operator->() const { return &get(); }
|
|
|
|
T& operator*() { return get(); }
|
|
const T& operator*() const { return get(); }
|
|
|
|
T& get() { return reinterpret_cast<T&>(storage); }
|
|
const T& get() const { return reinterpret_cast<T&>(storage); }
|
|
|
|
private:
|
|
alignas(T) u8 storage[sizeof(T)];
|
|
};
|
|
|
|
}
|
|
|
|
using AK::NeverDestroyed;
|