| // -*- C++ -*- |
| //===----------------------------------------------------------------------===// |
| // |
| // 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_IN_OUT_RESULT_H |
| #define _LIBCPP___ALGORITHM_IN_OUT_RESULT_H |
| |
| #include <__concepts/convertible_to.h> |
| #include <__config> |
| #include <__utility/move.h> |
| |
| #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) |
| # pragma GCC system_header |
| #endif |
| |
| _LIBCPP_BEGIN_NAMESPACE_STD |
| |
| #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES) |
| |
| namespace ranges { |
| |
| template<class _I1, class _O1> |
| struct in_out_result { |
| _LIBCPP_NO_UNIQUE_ADDRESS _I1 in; |
| _LIBCPP_NO_UNIQUE_ADDRESS _O1 out; |
| |
| template <class _I2, class _O2> |
| requires convertible_to<const _I1&, _I2> && convertible_to<const _O1&, _O2> |
| _LIBCPP_HIDE_FROM_ABI |
| constexpr operator in_out_result<_I2, _O2>() const & { |
| return {in, out}; |
| } |
| |
| template <class _I2, class _O2> |
| requires convertible_to<_I1, _I2> && convertible_to<_O1, _O2> |
| _LIBCPP_HIDE_FROM_ABI |
| constexpr operator in_out_result<_I2, _O2>() && { |
| return {std::move(in), std::move(out)}; |
| } |
| }; |
| |
| } // namespace ranges |
| |
| #endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES) |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP___ALGORITHM_IN_OUT_RESULT_H |
