ladybird/AK/NeverDestroyed.h
Brian Gianforcaro 1682f0b760 Everything: Move to SPDX license identifiers in all files.
SPDX License Identifiers are a more compact / standardized
way of representing file license information.

See: https://spdx.dev/resources/use/#identifiers

This was done with the `ambr` search and replace tool.

 ambr --no-parent-ignore --key-from-file --rep-from-file key.txt rep.txt *
2021-04-22 11:22:27 +02:00

44 lines
875 B
C++

/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#pragma once
#include <AK/Noncopyable.h>
#include <AK/Types.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;