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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_IN_RESULT_H11#define _LIBCPP___ALGORITHM_IN_IN_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 {29 30template <class _InIter1, class _InIter2>31struct in_in_result {32 _LIBCPP_NO_UNIQUE_ADDRESS _InIter1 in1;33 _LIBCPP_NO_UNIQUE_ADDRESS _InIter2 in2;34 35 template <class _InIter3, class _InIter4>36 requires convertible_to<const _InIter1&, _InIter3> && convertible_to<const _InIter2&, _InIter4>37 _LIBCPP_HIDE_FROM_ABI constexpr operator in_in_result<_InIter3, _InIter4>() const& {38 return {in1, in2};39 }40 41 template <class _InIter3, class _InIter4>42 requires convertible_to<_InIter1, _InIter3> && convertible_to<_InIter2, _InIter4>43 _LIBCPP_HIDE_FROM_ABI constexpr operator in_in_result<_InIter3, _InIter4>() && {44 return {std::move(in1), std::move(in2)};45 }46};47 48} // namespace ranges49 50#endif // _LIBCPP_STD_VER >= 2051 52_LIBCPP_END_NAMESPACE_STD53 54_LIBCPP_POP_MACROS55 56#endif // _LIBCPP___ALGORITHM_IN_IN_RESULT_H57