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/*
* Copyright (c) 2020, the SerenityOS developers.
* 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/Traits.h>
namespace AK {
template<typename T>
class TypedTransfer {
public:
static void move(T* destination, T* source, size_t count)
{
if (!count)
return;
if constexpr (Traits<T>::is_trivial()) {
__builtin_memmove(destination, source, count * sizeof(T));
return;
}
for (size_t i = 0; i < count; ++i) {
if (destination <= source)
new (&destination[i]) T(AK::move(source[i]));
else
new (&destination[count - i - 1]) T(AK::move(source[count - i - 1]));
}
return;
}
static size_t copy(T* destination, const T* source, size_t count)
{
if (!count)
return 0;
if constexpr (Traits<T>::is_trivial()) {
__builtin_memmove(destination, source, count * sizeof(T));
return count;
}
for (size_t i = 0; i < count; ++i) {
if (destination <= source)
new (&destination[i]) T(source[i]);
else
new (&destination[count - i - 1]) T(source[count - i - 1]);
}
return count;
}
static bool compare(const T* a, const T* b, size_t count)
{
if (!count)
return true;
if constexpr (Traits<T>::is_trivial())
return !__builtin_memcmp(a, b, count * sizeof(T));
for (size_t i = 0; i < count; ++i) {
if (a[i] != b[i])
return false;
}
return true;
}
};
}
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