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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-exception7//8//===----------------------------------------------------------------------===//9 10#ifndef _LIBCPP___ALGORITHM_IN_FUN_RESULT_H11#define _LIBCPP___ALGORITHM_IN_FUN_RESULT_H12 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_header19#endif20 21_LIBCPP_PUSH_MACROS22#include <__undef_macros>23 24_LIBCPP_BEGIN_NAMESPACE_STD25 26#if _LIBCPP_STD_VER >= 2027 28namespace ranges {29template <class _InIter1, class _Func1>30struct in_fun_result {31 _LIBCPP_NO_UNIQUE_ADDRESS _InIter1 in;32 _LIBCPP_NO_UNIQUE_ADDRESS _Func1 fun;33 34 template <class _InIter2, class _Func2>35 requires convertible_to<const _InIter1&, _InIter2> && convertible_to<const _Func1&, _Func2>36 _LIBCPP_HIDE_FROM_ABI constexpr operator in_fun_result<_InIter2, _Func2>() const& {37 return {in, fun};38 }39 40 template <class _InIter2, class _Func2>41 requires convertible_to<_InIter1, _InIter2> && convertible_to<_Func1, _Func2>42 _LIBCPP_HIDE_FROM_ABI constexpr operator in_fun_result<_InIter2, _Func2>() && {43 return {std::move(in), std::move(fun)};44 }45};46} // namespace ranges47 48#endif // _LIBCPP_STD_VER >= 2049 50_LIBCPP_END_NAMESPACE_STD51 52_LIBCPP_POP_MACROS53 54#endif // _LIBCPP___ALGORITHM_IN_FUN_RESULT_H55