iter_exchange_move.hpp

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//
// Created by YongGyu Lee on 4/15/24.
//
 
#ifndef VCCC_ITERATOR_DETAIL_ITER_EXCHANGE_MOVE_HPP_
#define VCCC_ITERATOR_DETAIL_ITER_EXCHANGE_MOVE_HPP_
 
#include <type_traits>
 
#include "vccc/__iterator/iter_move.hpp"
#include "vccc/__iterator/iter_value_t.hpp"
 
namespace vccc {
namespace detail {
 
template<typename T, typename U>
constexpr iter_value_t<std::remove_reference_t<T>> iter_exchange_move(T&& x, U&& y)
    noexcept(noexcept(iter_value_t<std::remove_reference_t<T>>(ranges::iter_move(x))))
{
  iter_value_t<std::remove_reference_t<T>> tmp(ranges::iter_move(x));
  *x = ranges::iter_move(y);
  return tmp;
}
 
} // namespace detail
} // namespace vccc
 
#endif // VCCC_ITERATOR_DETAIL_ITER_EXCHANGE_MOVE_HPP_