/*
 * Copyright (c) 2012-2026 Daniele Bartolini et al.
 * SPDX-License-Identifier: MIT
 */

#pragma once

#include "core/pair.h"
#include <string.h> // memcpy

namespace crown
{
template<typename T1, typename T2>
inline Pair<T1, T2, 0, 0>::Pair(T1 &f, T2 &s)
	: first(f)
	, second(s)
{
}

template<typename T1, typename T2>
inline Pair<T1, T2, 0, 0>::Pair(Allocator & /*a*/)
	: first()
	, second()
{
}

template<typename T1, typename T2>
inline Pair<T1, T2, 1, 0>::Pair(T1 &f, T2 &s)
	: first(f)
	, second(s)
{
}

template<typename T1, typename T2>
inline Pair<T1, T2, 1, 0>::Pair(Allocator &a)
	: first(a)
	, second()
{
}

template<typename T1, typename T2>
inline Pair<T1, T2, 0, 1>::Pair(T1 &f, T2 &s)
	: first(f)
	, second(s)
{
}

template<typename T1, typename T2>
inline Pair<T1, T2, 0, 1>::Pair(Allocator &a)
	: first()
	, second(a)
{
}

template<typename T1, typename T2>
inline Pair<T1, T2, 1, 1>::Pair(T1 &f, T2 &s)
	: first(f)
	, second(s)
{
}

template<typename T1, typename T2>
inline Pair<T1, T2, 1, 1>::Pair(Allocator &a)
	: first(a)
	, second(a)
{
}

template<typename T1, typename T2>
inline void swap(Pair<T1, T2, 0, 0> &a, Pair<T1, T2, 0, 0> &b)
{
	char c[sizeof(a)];
	memcpy((void *)&c, (void *)&a, sizeof(a));
	memcpy((void *)&a, (void *)&b, sizeof(a));
	memcpy((void *)&b, (void *)&c, sizeof(a));
}

template<typename T1, typename T2>
inline void swap(Pair<T1, T2, 0, 1> &a, Pair<T1, T2, 0, 1> &b)
{
	char c[sizeof(a)];
	memcpy((void *)&c, (void *)&a, sizeof(a));
	memcpy((void *)&a, (void *)&b, sizeof(a));
	memcpy((void *)&b, (void *)&c, sizeof(a));
}

template<typename T1, typename T2>
inline void swap(Pair<T1, T2, 1, 0> &a, Pair<T1, T2, 1, 0> &b)
{
	char c[sizeof(a)];
	memcpy((void *)&c, (void *)&a, sizeof(a));
	memcpy((void *)&a, (void *)&b, sizeof(a));
	memcpy((void *)&b, (void *)&c, sizeof(a));
}

template<typename T1, typename T2>
inline void swap(Pair<T1, T2, 1, 1> &a, Pair<T1, T2, 1, 1> &b)
{
	char c[sizeof(a)];
	memcpy((void *)&c, (void *)&a, sizeof(a));
	memcpy((void *)&a, (void *)&b, sizeof(a));
	memcpy((void *)&b, (void *)&c, sizeof(a));
}

} // namespace crown
