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66 lines
1.7 KiB
C++
66 lines
1.7 KiB
C++
/// \file
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// Range v3 library
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//
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// Copyright Andrey Diduh 2019
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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_VIEW_ADDRESSOF_HPP
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#define RANGES_V3_VIEW_ADDRESSOF_HPP
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#include <type_traits>
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#include <utility>
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#include <meta/meta.hpp>
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#include <range/v3/utility/addressof.hpp>
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#include <range/v3/view/transform.hpp>
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#include <range/v3/view/view.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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/// \addtogroup group-views
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/// @{
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namespace views
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{
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struct addressof_fn
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{
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private:
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struct take_address
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{
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template<typename V>
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constexpr V * operator()(V & value) const noexcept
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{
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return detail::addressof(value);
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}
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};
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public:
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template(typename Rng)(
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requires viewable_range<Rng> AND input_range<Rng> AND
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std::is_lvalue_reference<range_reference_t<Rng>>::value) //
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constexpr auto CPP_auto_fun(operator())(Rng && rng)(const) //
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(
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return transform(all(static_cast<Rng &&>(rng)), take_address{}) //
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)
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};
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/// \relates addressof_fn
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/// \ingroup group-views
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RANGES_INLINE_VARIABLE(view_closure<addressof_fn>, addressof)
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} // namespace views
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/// @}
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} // namespace ranges
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#include <range/v3/detail/epilogue.hpp>
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#endif // RANGES_V3_VIEW_ADDRESSOF_HPP
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