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#if _LIBCPP_STD_VER > 17
33
34_LIBCPP_BEGIN_NAMESPACE_STD
35
36namespace ranges {
37
38template <class _InIter, class _OutIter>
39using remove_copy_if_result = in_out_result<_InIter, _OutIter>;
40
41template <class _InIter, class _Sent, class _OutIter, class _Proj, class _Pred>
42_LIBCPP_HIDE_FROM_ABI constexpr in_out_result<_InIter, _OutIter>
43__remove_copy_if_impl(_InIter __first, _Sent __last, _OutIter __result, _Pred& __pred, _Proj& __proj) {
44  for (; __first != __last; ++__first) {
45    if (!std::invoke(__pred, std::invoke(__proj, *__first))) {
46      *__result = *__first;
47      ++__result;
48    }
49  }
50  return {std::move(__first), std::move(__result)};
51}
52
53namespace __remove_copy_if {
54
55  struct __fn {
56    template <input_iterator _InIter,
57              sentinel_for<_InIter> _Sent,
58              weakly_incrementable _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 remove_copy_if_result<_InIter, _OutIter>
63    operator()(_InIter __first, _Sent __last, _OutIter __result, _Pred __pred, _Proj __proj = {}) const {
64      return ranges::__remove_copy_if_impl(std::move(__first), std::move(__last), std::move(__result), __pred, __proj);
65    }
66
67    template <input_range _Range,
68              weakly_incrementable _OutIter,
69              class _Proj = identity,
70              indirect_unary_predicate<projected<iterator_t<_Range>, _Proj>> _Pred>
71      requires indirectly_copyable<iterator_t<_Range>, _OutIter>
72    _LIBCPP_HIDE_FROM_ABI constexpr remove_copy_if_result<borrowed_iterator_t<_Range>, _OutIter>
73    operator()(_Range&& __range, _OutIter __result, _Pred __pred, _Proj __proj = {}) const {
74      return ranges::__remove_copy_if_impl(
75          ranges::begin(__range), ranges::end(__range), std::move(__result), __pred, __proj);
76    }
77  };
78
79} // namespace __remove_copy_if
80
81inline namespace __cpo {
82  inline constexpr auto remove_copy_if = __remove_copy_if::__fn{};
83} // namespace __cpo
84} // namespace ranges
85
86_LIBCPP_END_NAMESPACE_STD
87
88#endif // _LIBCPP_STD_VER > 17
89
90#endif // _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_IF_H
91