1 files changed, 83 insertions, 0 deletions
diff --git a/libcxx/include/__algorithm/ranges_move.h b/libcxx/include/__algorithm/ranges_move.h
new file mode 100644
index 000000000000..ad4342d7c989
--- /dev/null
+++ b/libcxx/include/__algorithm/ranges_move.h
@@ -0,0 +1,83 @@
+//===----------------------------------------------------------------------===//
+//
+// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
+// See https://llvm.org/LICENSE.txt for license information.
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef _LIBCPP___ALGORITHM_RANGES_MOVE_H
+#define _LIBCPP___ALGORITHM_RANGES_MOVE_H
+
+#include <__algorithm/in_out_result.h>
+#include <__algorithm/move.h>
+#include <__config>
+#include <__iterator/concepts.h>
+#include <__iterator/iter_move.h>
+#include <__ranges/access.h>
+#include <__ranges/concepts.h>
+#include <__ranges/dangling.h>
+#include <__utility/move.h>
+
+#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
+#  pragma GCC system_header
+#endif
+
+#if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
+
+_LIBCPP_BEGIN_NAMESPACE_STD
+
+namespace ranges {
+
+template <class _InIter, class _OutIter>
+using move_result = in_out_result<_InIter, _OutIter>;
+
+namespace __move {
+struct __fn {
+
+  template <class _InIter, class _Sent, class _OutIter>
+    requires __iter_move::__move_deref<_InIter> // check that we are allowed to std::move() the value
+  _LIBCPP_HIDE_FROM_ABI constexpr static
+  move_result<_InIter, _OutIter> __move_impl(_InIter __first, _Sent __last, _OutIter __result) {
+    auto __ret = std::__move(std::move(__first), std::move(__last), std::move(__result));
+    return {std::move(__ret.first), std::move(__ret.second)};
+  }
+
+  template <class _InIter, class _Sent, class _OutIter>
+  _LIBCPP_HIDE_FROM_ABI constexpr static
+  move_result<_InIter, _OutIter> __move_impl(_InIter __first, _Sent __last, _OutIter __result) {
+    while (__first != __last) {
+      *__result = ranges::iter_move(__first);
+      ++__first;
+      ++__result;
+    }
+    return {std::move(__first), std::move(__result)};
+  }
+
+  template <input_iterator _InIter, sentinel_for<_InIter> _Sent, weakly_incrementable _OutIter>
+    requires indirectly_movable<_InIter, _OutIter>
+  _LIBCPP_HIDE_FROM_ABI constexpr
+  move_result<_InIter, _OutIter> operator()(_InIter __first, _Sent __last, _OutIter __result) const {
+    return __move_impl(std::move(__first), std::move(__last), std::move(__result));
+  }
+
+  template <input_range _Range, weakly_incrementable _OutIter>
+    requires indirectly_movable<iterator_t<_Range>, _OutIter>
+  _LIBCPP_HIDE_FROM_ABI constexpr
+  move_result<borrowed_iterator_t<_Range>, _OutIter> operator()(_Range&& __range, _OutIter __result) const {
+    return __move_impl(ranges::begin(__range), ranges::end(__range), std::move(__result));
+  }
+
+};
+} // namespace __move
+
+inline namespace __cpo {
+  inline constexpr auto move = __move::__fn{};
+} // namespace __cpo
+} // namespace ranges
+
+_LIBCPP_END_NAMESPACE_STD
+
+#endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
+
+#endif // _LIBCPP___ALGORITHM_RANGES_MOVE_H