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_REPLACE_COPY_IF_H 10 #define _LIBCPP___ALGORITHM_RANGES_REPLACE_COPY_IF_H 11 12 #include <__algorithm/in_out_result.h> 13 #include <__config> 14 #include <__functional/identity.h> 15 #include <__functional/invoke.h> 16 #include <__iterator/concepts.h> 17 #include <__iterator/projected.h> 18 #include <__ranges/access.h> 19 #include <__ranges/concepts.h> 20 #include <__ranges/dangling.h> 21 #include <__utility/move.h> 22 23 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 24 # pragma GCC system_header 25 #endif 26 27 #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES) 28 29 _LIBCPP_BEGIN_NAMESPACE_STD 30 31 namespace ranges { 32 33 template <class _InIter, class _OutIter> 34 using replace_copy_if_result = in_out_result<_InIter, _OutIter>; 35 36 template <class _InIter, class _Sent, class _OutIter, class _Pred, class _Type, class _Proj> 37 _LIBCPP_HIDE_FROM_ABI constexpr replace_copy_if_result<_InIter, _OutIter> __replace_copy_if_impl( 38 _InIter __first, _Sent __last, _OutIter __result, _Pred& __pred, const _Type& __new_value, _Proj& __proj) { 39 while (__first != __last) { 40 if (std::invoke(__pred, std::invoke(__proj, *__first))) 41 *__result = __new_value; 42 else 43 *__result = *__first; 44 45 ++__first; 46 ++__result; 47 } 48 49 return {std::move(__first), std::move(__result)}; 50 } 51 52 namespace __replace_copy_if { 53 54 struct __fn { 55 template <input_iterator _InIter, 56 sentinel_for<_InIter> _Sent, 57 class _Type, 58 output_iterator<const _Type&> _OutIter, 59 class _Proj = identity, 60 indirect_unary_predicate<projected<_InIter, _Proj>> _Pred> 61 requires indirectly_copyable<_InIter, _OutIter> 62 _LIBCPP_HIDE_FROM_ABI constexpr replace_copy_if_result<_InIter, _OutIter> operator()( 63 _InIter __first, _Sent __last, _OutIter __result, _Pred __pred, const _Type& __new_value, _Proj __proj = {}) 64 const { 65 return ranges::__replace_copy_if_impl( 66 std::move(__first), std::move(__last), std::move(__result), __pred, __new_value, __proj); 67 } 68 69 template <input_range _Range, 70 class _Type, 71 output_iterator<const _Type&> _OutIter, 72 class _Proj = identity, 73 indirect_unary_predicate<projected<iterator_t<_Range>, _Proj>> _Pred> 74 requires indirectly_copyable<iterator_t<_Range>, _OutIter> 75 _LIBCPP_HIDE_FROM_ABI constexpr replace_copy_if_result<borrowed_iterator_t<_Range>, _OutIter> 76 operator()(_Range&& __range, _OutIter __result, _Pred __pred, const _Type& __new_value, _Proj __proj = {}) const { 77 return ranges::__replace_copy_if_impl( 78 ranges::begin(__range), ranges::end(__range), std::move(__result), __pred, __new_value, __proj); 79 } 80 }; 81 82 } // namespace __replace_copy_if 83 84 inline namespace __cpo { 85 inline constexpr auto replace_copy_if = __replace_copy_if::__fn{}; 86 } // namespace __cpo 87 } // namespace ranges 88 89 _LIBCPP_END_NAMESPACE_STD 90 91 #endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES) 92 93 #endif // _LIBCPP___ALGORITHM_RANGES_REPLACE_COPY_IF_H 94