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

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source code of libcxx/include/__algorithm/ranges_remove_copy_if.h