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/// \file
// Range v3 library
//
// Copyright Eric Niebler 2013-present
//
// Use, modification and distribution is subject to 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)
//
// Project home: https://github.com/ericniebler/range-v3
//
#ifndef RANGES_V3_ALGORITHM_SWAP_RANGES_HPP
#define RANGES_V3_ALGORITHM_SWAP_RANGES_HPP
#include <range/v3/range_fwd.hpp>
#include <range/v3/algorithm/result_types.hpp>
#include <range/v3/iterator/concepts.hpp>
#include <range/v3/iterator/traits.hpp>
#include <range/v3/range/access.hpp>
#include <range/v3/range/concepts.hpp>
#include <range/v3/range/dangling.hpp>
#include <range/v3/range/traits.hpp>
#include <range/v3/utility/static_const.hpp>
#include <range/v3/detail/prologue.hpp>
namespace ranges
{
/// \addtogroup group-algorithms
/// @{
template<typename I1, typename I2>
using swap_ranges_result = detail::in1_in2_result<I1, I2>;
RANGES_FUNC_BEGIN(swap_ranges)
/// \brief function template \c swap_ranges
template(typename I1, typename S1, typename I2)(
requires input_iterator<I1> AND sentinel_for<S1, I1> AND
input_iterator<I2> AND indirectly_swappable<I1, I2>)
constexpr swap_ranges_result<I1, I2> //
RANGES_FUNC(swap_ranges)(I1 begin1, S1 end1, I2 begin2) //
{
for(; begin1 != end1; ++begin1, ++begin2)
ranges::iter_swap(begin1, begin2);
return {begin1, begin2};
}
/// \overload
template(typename I1, typename S1, typename I2, typename S2)(
requires input_iterator<I1> AND sentinel_for<S1, I1> AND
input_iterator<I2> AND sentinel_for<S2, I2> AND
indirectly_swappable<I1, I2>)
constexpr swap_ranges_result<I1, I2> RANGES_FUNC(swap_ranges)(I1 begin1,
S1 end1,
I2 begin2,
S2 end2) //
{
for(; begin1 != end1 && begin2 != end2; ++begin1, ++begin2)
ranges::iter_swap(begin1, begin2);
return {begin1, begin2};
}
template(typename Rng1, typename I2_)(
requires input_range<Rng1> AND input_iterator<uncvref_t<I2_>> AND
indirectly_swappable<iterator_t<Rng1>, uncvref_t<I2_>>)
constexpr swap_ranges_result<iterator_t<Rng1>, uncvref_t<I2_>> //
RANGES_FUNC(swap_ranges)(Rng1 && rng1, I2_ && begin2) //
{
return (*this)(begin(rng1), end(rng1), (I2_ &&) begin2);
}
template(typename Rng1, typename Rng2)(
requires input_range<Rng1> AND input_range<Rng2> AND
indirectly_swappable<iterator_t<Rng1>, iterator_t<Rng2>>)
constexpr swap_ranges_result<borrowed_iterator_t<Rng1>, borrowed_iterator_t<Rng2>> //
RANGES_FUNC(swap_ranges)(Rng1 && rng1, Rng2 && rng2) //
{
return (*this)(begin(rng1), end(rng1), begin(rng2), end(rng2));
}
RANGES_FUNC_END(swap_ranges)
namespace cpp20
{
using ranges::swap_ranges;
using ranges::swap_ranges_result;
} // namespace cpp20
/// @}
} // namespace ranges
#include <range/v3/detail/epilogue.hpp>
#endif
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