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_H
10#define _LIBCPP___ALGORITHM_RANGES_REMOVE_H
11#include <__config>
12
13#include <__algorithm/ranges_remove_if.h>
14#include <__functional/identity.h>
15#include <__functional/ranges_operations.h>
16#include <__iterator/concepts.h>
17#include <__iterator/permutable.h>
18#include <__iterator/projected.h>
19#include <__ranges/access.h>
20#include <__ranges/concepts.h>
21#include <__ranges/subrange.h>
22#include <__utility/move.h>
23
24#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
25# pragma GCC system_header
26#endif
27
28_LIBCPP_PUSH_MACROS
29#include <__undef_macros>
30
31#if _LIBCPP_STD_VER >= 20
32
33_LIBCPP_BEGIN_NAMESPACE_STD
34
35namespace ranges {
36struct __remove {
37 template <permutable _Iter, sentinel_for<_Iter> _Sent, class _Type, class _Proj = identity>
38 requires indirect_binary_predicate<ranges::equal_to, projected<_Iter, _Proj>, const _Type*>
39 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr subrange<_Iter>
40 operator()(_Iter __first, _Sent __last, const _Type& __value, _Proj __proj = {}) const {
41 auto __pred = [&](auto&& __other) -> bool { return __value == __other; };
42 return ranges::__remove_if_impl(std::move(__first), std::move(__last), __pred, __proj);
43 }
44
45 template <forward_range _Range, class _Type, class _Proj = identity>
46 requires permutable<iterator_t<_Range>> &&
47 indirect_binary_predicate<ranges::equal_to, projected<iterator_t<_Range>, _Proj>, const _Type*>
48 [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr borrowed_subrange_t<_Range>
49 operator()(_Range&& __range, const _Type& __value, _Proj __proj = {}) const {
50 auto __pred = [&](auto&& __other) -> bool { return __value == __other; };
51 return ranges::__remove_if_impl(ranges::begin(__range), ranges::end(__range), __pred, __proj);
52 }
53};
54
55inline namespace __cpo {
56inline constexpr auto remove = __remove{};
57} // namespace __cpo
58} // namespace ranges
59
60_LIBCPP_END_NAMESPACE_STD
61
62#endif // _LIBCPP_STD_VER >= 20
63
64_LIBCPP_POP_MACROS
65
66#endif // _LIBCPP___ALGORITHM_RANGES_REMOVE_H
67