1 // -*- C++ -*-
2 //===----------------------------------------------------------------------===//
3 //
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
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #ifndef _LIBCPP___ALGORITHM_IN_OUT_OUT_RESULT_H
11 #define _LIBCPP___ALGORITHM_IN_OUT_OUT_RESULT_H
12 
13 #include <__concepts/convertible_to.h>
14 #include <__config>
15 #include <__utility/move.h>
16 
17 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
18 #  pragma GCC system_header
19 #endif
20 
21 _LIBCPP_BEGIN_NAMESPACE_STD
22 
23 #if _LIBCPP_STD_VER > 17
24 
25 namespace ranges {
26 template <class _InIter1, class _OutIter1, class _OutIter2>
27 struct in_out_out_result {
28   _LIBCPP_NO_UNIQUE_ADDRESS _InIter1 in;
29   _LIBCPP_NO_UNIQUE_ADDRESS _OutIter1 out1;
30   _LIBCPP_NO_UNIQUE_ADDRESS _OutIter2 out2;
31 
32   template <class _InIter2, class _OutIter3, class _OutIter4>
33     requires convertible_to<const _InIter1&, _InIter2>
34           && convertible_to<const _OutIter1&, _OutIter3> && convertible_to<const _OutIter2&, _OutIter4>
35   _LIBCPP_HIDE_FROM_ABI constexpr
36   operator in_out_out_result<_InIter2, _OutIter3, _OutIter4>() const& {
37     return {in, out1, out2};
38   }
39 
40   template <class _InIter2, class _OutIter3, class _OutIter4>
41     requires convertible_to<_InIter1, _InIter2>
42           && convertible_to<_OutIter1, _OutIter3> && convertible_to<_OutIter2, _OutIter4>
43   _LIBCPP_HIDE_FROM_ABI constexpr
44   operator in_out_out_result<_InIter2, _OutIter3, _OutIter4>() && {
45     return {std::move(in), std::move(out1), std::move(out2)};
46   }
47 };
48 } // namespace ranges
49 
50 #endif // _LIBCPP_STD_VER > 17
51 
52 _LIBCPP_END_NAMESPACE_STD
53 
54 #endif // _LIBCPP___ALGORITHM_IN_OUT_OUT_RESULT_H
55