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Sprout/sprout/utility/swap.hpp

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/*=============================================================================
Copyright (c) 2011-2013 Bolero MURAKAMI
https://github.com/bolero-MURAKAMI/Sprout
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
=============================================================================*/
#ifndef SPROUT_UTILITY_SWAP_HPP
#define SPROUT_UTILITY_SWAP_HPP
#include <cstddef>
#include <utility>
#include <sprout/config.hpp>
namespace sprout_swap_detail {
using std::swap;
template<typename T>
inline SPROUT_CXX14_CONSTEXPR void
swap_impl(T& a, T& b)
SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(swap(a, b)))
{
swap(a, b);
}
template<typename T, std::size_t N>
inline SPROUT_CXX14_CONSTEXPR void
swap_impl(T (& a)[N], T (& b)[N])
SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(swap(*a, *b)))
{
for (std::size_t i = 0; i < N; ++i) {
swap(a[i], b[i]);
}
}
} // namespace sprout_swap_detail
namespace sprout {
//
// 20.2.2 swap
//
template<typename T1, typename T2>
inline SPROUT_CXX14_CONSTEXPR void
swap(T1& lhs, T2& rhs)
SPROUT_NOEXCEPT_EXPR(SPROUT_NOEXCEPT_EXPR(sprout_swap_detail::swap_impl(lhs, rhs)))
{
return sprout_swap_detail::swap_impl(lhs, rhs);
}
} // namespace sprout
#endif // #ifndef SPROUT_UTILITY_SWAP_HPP