2 //===----------------------------------------------------------------------===//
4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
5 // See https://llvm.org/LICENSE.txt for license information.
6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
8 //===----------------------------------------------------------------------===//
10 #ifndef _LIBCPP___ALGORITHM_IN_OUT_RESULT_H
11 #define _LIBCPP___ALGORITHM_IN_OUT_RESULT_H
13 #include <__concepts/convertible_to.h>
15 #include <__utility/move.h>
17 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
18 # pragma GCC system_header
21 _LIBCPP_BEGIN_NAMESPACE_STD
23 #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
27 template<class _InIter1, class _OutIter1>
28 struct in_out_result {
29 _LIBCPP_NO_UNIQUE_ADDRESS _InIter1 in;
30 _LIBCPP_NO_UNIQUE_ADDRESS _OutIter1 out;
32 template <class _InIter2, class _OutIter2>
33 requires convertible_to<const _InIter1&, _InIter2> && convertible_to<const _OutIter1&, _OutIter2>
35 constexpr operator in_out_result<_InIter2, _OutIter2>() const & {
39 template <class _InIter2, class _OutIter2>
40 requires convertible_to<_InIter1, _InIter2> && convertible_to<_OutIter1, _OutIter2>
42 constexpr operator in_out_result<_InIter2, _OutIter2>() && {
43 return {std::move(in), std::move(out)};
49 #endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES)
51 _LIBCPP_END_NAMESPACE_STD
53 #endif // _LIBCPP___ALGORITHM_IN_OUT_RESULT_H