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_IN_RESULT_H
11 #define _LIBCPP___ALGORITHM_IN_IN_RESULT_H
12 
13 #include <__concepts/convertible_to.h>
14 #include <__config>
15 #include <__utility/move.h>
16 
17 _LIBCPP_BEGIN_NAMESPACE_STD
18 
19 #ifndef _LIBCPP_HAS_NO_RANGES
20 
21 namespace ranges {
22 template <class _I1, class _I2>
23 struct in_in_result {
24   [[no_unique_address]] _I1 in1;
25   [[no_unique_address]] _I2 in2;
26 
27   template <class _II1, class _II2>
28     requires convertible_to<const _I1&, _II1> && convertible_to<const _I2&, _II2>
29    _LIBCPP_HIDE_FROM_ABI constexpr
30    operator in_in_result<_II1, _II2>() const & {
31     return {in1, in2};
32   }
33 
34   template <class _II1, class _II2>
35     requires convertible_to<_I1, _II1> && convertible_to<_I2, _II2>
36   _LIBCPP_HIDE_FROM_ABI constexpr
37   operator in_in_result<_II1, _II2>() && { return {_VSTD::move(in1), _VSTD::move(in2)}; }
38 };
39 } // namespace ranges
40 
41 #endif // _LIBCPP_HAS_NO_RANGES
42 
43 _LIBCPP_END_NAMESPACE_STD
44 
45 #endif // _LIBCPP___ALGORITHM_IN_IN_RESULT_H
46