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/*
* Copyright (C) 2025 Apple Inc. 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 APPLE INC. AND ITS 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 APPLE INC. OR ITS 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 <cstddef>
#include <wtf/StdLibExtras.h>
namespace WTF {
template<typename T>
class AlignedStorage {
public:
AlignedStorage() = default;
AlignedStorage(AlignedStorage&&) = delete;
AlignedStorage(const AlignedStorage&) = delete;
AlignedStorage& operator=(AlignedStorage&&) = delete;
AlignedStorage& operator=(const AlignedStorage&) = delete;
T* get() { SUPPRESS_MEMORY_UNSAFE_CAST return reinterpret_cast_ptr<T*>(&m_storage); }
const T* get() const { SUPPRESS_MEMORY_UNSAFE_CAST return reinterpret_cast_ptr<const T*>(&m_storage); }
T& operator*() { return *get(); }
T* operator->() { return get(); }
const T& operator*() const { return *get(); }
const T* operator->() const { return get(); }
private:
struct alignas(T) Storage {
std::byte data[sizeof(T)];
} m_storage;
};
} // namespace WTF
using WTF::AlignedStorage;
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