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_OUT_VALUE_RESULT_H 11 #define _LIBCPP___ALGORITHM_OUT_VALUE_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_PUSH_MACROS 22 #include <__undef_macros> 23 24 _LIBCPP_BEGIN_NAMESPACE_STD 25 26 #if _LIBCPP_STD_VER >= 23 27 28 namespace ranges { 29 30 template <class _OutIter1, class _ValType1> 31 struct out_value_result { 32 _LIBCPP_NO_UNIQUE_ADDRESS _OutIter1 out; 33 _LIBCPP_NO_UNIQUE_ADDRESS _ValType1 value; 34 35 template <class _OutIter2, class _ValType2> 36 requires convertible_to<const _OutIter1&, _OutIter2> && convertible_to<const _ValType1&, _ValType2> out_value_resultout_value_result37 _LIBCPP_HIDE_FROM_ABI constexpr operator out_value_result<_OutIter2, _ValType2>() const& { 38 return {out, value}; 39 } 40 41 template <class _OutIter2, class _ValType2> 42 requires convertible_to<_OutIter1, _OutIter2> && convertible_to<_ValType1, _ValType2> out_value_resultout_value_result43 _LIBCPP_HIDE_FROM_ABI constexpr operator out_value_result<_OutIter2, _ValType2>() && { 44 return {std::move(out), std::move(value)}; 45 } 46 }; 47 48 } // namespace ranges 49 50 #endif // _LIBCPP_STD_VER >= 23 51 52 _LIBCPP_END_NAMESPACE_STD 53 54 _LIBCPP_POP_MACROS 55 56 #endif // _LIBCPP___ALGORITHM_OUT_VALUE_RESULT_H 57