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/// \file
// Range v3 library
//
// Copyright Eric Niebler 2014-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_REVERSE_COPY_HPP
#define RANGES_V3_ALGORITHM_REVERSE_COPY_HPP
#include <meta/meta.hpp>
#include <range/v3/range_fwd.hpp>
#include <range/v3/algorithm/result_types.hpp>
#include <range/v3/iterator/concepts.hpp>
#include <range/v3/iterator/operations.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 I, typename O>
using reverse_copy_result = detail::in_out_result<I, O>;
RANGES_FUNC_BEGIN(reverse_copy)
/// \brief function template \c reverse_copy
template(typename I, typename S, typename O)(
requires bidirectional_iterator<I> AND sentinel_for<S, I> AND
weakly_incrementable<O> AND indirectly_copyable<I, O>)
constexpr reverse_copy_result<I, O> RANGES_FUNC(reverse_copy)(I first, S end_, O out) //
{
I last = ranges::next(first, end_), res = last;
for(; first != last; ++out)
*out = *--last;
return {res, out};
}
/// \overload
template(typename Rng, typename O)(
requires bidirectional_range<Rng> AND weakly_incrementable<O> AND
indirectly_copyable<iterator_t<Rng>, O>)
constexpr reverse_copy_result<borrowed_iterator_t<Rng>, O> //
RANGES_FUNC(reverse_copy)(Rng && rng, O out) //
{
return (*this)(begin(rng), end(rng), std::move(out));
}
RANGES_FUNC_END(reverse_copy)
namespace cpp20
{
using ranges::reverse_copy;
using ranges::reverse_copy_result;
} // namespace cpp20
/// @}
} // namespace ranges
#include <range/v3/detail/epilogue.hpp>
#endif
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