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/*
* Copyright (c) 2020, the SerenityOS developers.
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#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 == 0)
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(std::move(source[i]));
else
new (&destination[count - i - 1]) T(std::move(source[count - i - 1]));
}
}
static size_t copy(T* destination, T const* source, size_t count)
{
if (count == 0)
return 0;
if constexpr (Traits<T>::is_trivial()) {
if (count == 1)
*destination = *source;
else
__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(T const* a, T const* b, size_t count)
{
if (count == 0)
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;
}
static void delete_(T* ptr, size_t count)
{
if (count == 0)
return;
if constexpr (Traits<T>::is_trivial()) {
return;
}
for (size_t i = 0; i < count; ++i)
ptr[i].~T();
}
};
}
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