1 //===----------------------------------------------------------------------===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 9 #ifndef _LIBCPP___ALGORITHM_RANGES_COPY_H 10 #define _LIBCPP___ALGORITHM_RANGES_COPY_H 11 12 #include <__algorithm/copy.h> 13 #include <__algorithm/in_out_result.h> 14 #include <__config> 15 #include <__functional/identity.h> 16 #include <__iterator/concepts.h> 17 #include <__ranges/access.h> 18 #include <__ranges/concepts.h> 19 #include <__ranges/dangling.h> 20 #include <__utility/move.h> 21 22 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 23 # pragma GCC system_header 24 #endif 25 26 #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES) 27 28 _LIBCPP_BEGIN_NAMESPACE_STD 29 30 namespace ranges { 31 32 template <class _InIter, class _OutIter> 33 using copy_result = in_out_result<_InIter, _OutIter>; 34 35 namespace __copy { 36 struct __fn { 37 38 template <input_iterator _InIter, sentinel_for<_InIter> _Sent, weakly_incrementable _OutIter> 39 requires indirectly_copyable<_InIter, _OutIter> 40 _LIBCPP_HIDE_FROM_ABI constexpr 41 copy_result<_InIter, _OutIter> operator()(_InIter __first, _Sent __last, _OutIter __result) const { 42 auto __ret = std::__copy(std::move(__first), std::move(__last), std::move(__result)); 43 return {std::move(__ret.first), std::move(__ret.second)}; 44 } 45 46 template <input_range _Range, weakly_incrementable _OutIter> 47 requires indirectly_copyable<iterator_t<_Range>, _OutIter> 48 _LIBCPP_HIDE_FROM_ABI constexpr 49 copy_result<borrowed_iterator_t<_Range>, _OutIter> operator()(_Range&& __r, _OutIter __result) const { 50 auto __ret = std::__copy(ranges::begin(__r), ranges::end(__r), std::move(__result)); 51 return {std::move(__ret.first), std::move(__ret.second)}; 52 } 53 }; 54 } // namespace __copy 55 56 inline namespace __cpo { 57 inline constexpr auto copy = __copy::__fn{}; 58 } // namespace __cpo 59 } // namespace ranges 60 61 _LIBCPP_END_NAMESPACE_STD 62 63 #endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES) 64 65 #endif // _LIBCPP___ALGORITHM_RANGES_COPY_H 66