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Telegram/ThirdParty/range-v3/include/range/v3/view/addressof.hpp

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