| // -*- 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_FUN_RESULT_H |
| #define _LIBCPP___ALGORITHM_IN_FUN_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 _InIter1, class _Func1> |
| struct in_fun_result { |
| _LIBCPP_NO_UNIQUE_ADDRESS _InIter1 in; |
| _LIBCPP_NO_UNIQUE_ADDRESS _Func1 fun; |
| |
| template <class _InIter2, class _Func2> |
| requires convertible_to<const _InIter1&, _InIter2> && convertible_to<const _Func1&, _Func2> |
| _LIBCPP_HIDE_FROM_ABI constexpr operator in_fun_result<_InIter2, _Func2>() const & { |
| return {in, fun}; |
| } |
| |
| template <class _InIter2, class _Func2> |
| requires convertible_to<_InIter1, _InIter2> && convertible_to<_Func1, _Func2> |
| _LIBCPP_HIDE_FROM_ABI constexpr operator in_fun_result<_InIter2, _Func2>() && { |
| return {std::move(in), std::move(fun)}; |
| } |
| }; |
| } // namespace ranges |
| |
| #endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES) |
| |
| _LIBCPP_END_NAMESPACE_STD |
| |
| #endif // _LIBCPP___ALGORITHM_IN_FUN_RESULT_H |
