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_H
10#define _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_H
11
12#include <__algorithm/in_out_result.h>
13#include <__algorithm/ranges_remove_copy_if.h>
14#include <__config>
15#include <__functional/identity.h>
16#include <__functional/invoke.h>
17#include <__functional/ranges_operations.h>
18#include <__iterator/concepts.h>
19#include <__iterator/projected.h>
20#include <__ranges/access.h>
21#include <__ranges/concepts.h>
22#include <__ranges/dangling.h>
23#include <__utility/move.h>
24
25#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
26#  pragma GCC system_header
27#endif
28
29_LIBCPP_PUSH_MACROS
30#include <__undef_macros>
31
32#if _LIBCPP_STD_VER >= 20
33
34_LIBCPP_BEGIN_NAMESPACE_STD
35
36namespace ranges {
37
38template <class _InIter, class _OutIter>
39using remove_copy_result = in_out_result<_InIter, _OutIter>;
40
41struct __remove_copy {
42  template <input_iterator _InIter,
43            sentinel_for<_InIter> _Sent,
44            weakly_incrementable _OutIter,
45            class _Type,
46            class _Proj = identity>
47    requires indirectly_copyable<_InIter, _OutIter> &&
48             indirect_binary_predicate<ranges::equal_to, projected<_InIter, _Proj>, const _Type*>
49  _LIBCPP_HIDE_FROM_ABI constexpr remove_copy_result<_InIter, _OutIter>
50  operator()(_InIter __first, _Sent __last, _OutIter __result, const _Type& __value, _Proj __proj = {}) const {
51    auto __pred = [&](auto&& __val) -> bool { return __value == __val; };
52    return ranges::__remove_copy_if_impl(std::move(__first), std::move(__last), std::move(__result), __pred, __proj);
53  }
54
55  template <input_range _Range, weakly_incrementable _OutIter, class _Type, class _Proj = identity>
56    requires indirectly_copyable<iterator_t<_Range>, _OutIter> &&
57             indirect_binary_predicate<ranges::equal_to, projected<iterator_t<_Range>, _Proj>, const _Type*>
58  _LIBCPP_HIDE_FROM_ABI constexpr remove_copy_result<borrowed_iterator_t<_Range>, _OutIter>
59  operator()(_Range&& __range, _OutIter __result, const _Type& __value, _Proj __proj = {}) const {
60    auto __pred = [&](auto&& __val) -> bool { return __value == __val; };
61    return ranges::__remove_copy_if_impl(
62        ranges::begin(__range), ranges::end(__range), std::move(__result), __pred, __proj);
63  }
64};
65
66inline namespace __cpo {
67inline constexpr auto remove_copy = __remove_copy{};
68} // namespace __cpo
69} // namespace ranges
70
71_LIBCPP_END_NAMESPACE_STD
72
73#endif // _LIBCPP_STD_VER >= 20
74
75_LIBCPP_POP_MACROS
76
77#endif // _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_H