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66 lines
1.6 KiB
C++
66 lines
1.6 KiB
C++
/// \file
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// Range v3 library
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//
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// Copyright Eric Niebler 2013-present
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//
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// Use, modification and distribution is subject to the
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// Boost Software License, Version 1.0. (See accompanying
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// file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt)
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//
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// Project home: https://github.com/ericniebler/range-v3
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//
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#ifndef RANGES_V3_UTILITY_MOVE_HPP
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#define RANGES_V3_UTILITY_MOVE_HPP
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#include <type_traits>
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#include <meta/meta.hpp>
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#include <range/v3/range_fwd.hpp>
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#include <range/v3/utility/static_const.hpp>
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#include <range/v3/detail/prologue.hpp>
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namespace ranges
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{
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namespace aux
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{
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/// \ingroup group-utility
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struct move_fn : move_tag
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{
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template<typename T>
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constexpr meta::_t<std::remove_reference<T>> && operator()(T && t) const //
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noexcept
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{
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return static_cast<meta::_t<std::remove_reference<T>> &&>(t);
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}
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/// \ingroup group-utility
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/// \sa `move_fn`
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template<typename T>
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friend constexpr decltype(auto) operator|(T && t, move_fn move) noexcept
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{
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return move(t);
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}
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};
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/// \ingroup group-utility
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/// \sa `move_fn`
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RANGES_INLINE_VARIABLE(move_fn, move)
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/// \ingroup group-utility
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/// \sa `move_fn`
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template<typename R>
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using move_t =
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meta::if_c<std::is_reference<R>::value, meta::_t<std::remove_reference<R>> &&,
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detail::decay_t<R>>;
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} // namespace aux
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} // namespace ranges
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#include <range/v3/detail/epilogue.hpp>
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#endif
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