xref: /freebsd-src/contrib/llvm-project/libcxx/include/__algorithm/ranges_remove_copy.h (revision b3edf4467982447620505a28fc82e38a414c07dc)
1753f127fSDimitry Andric //===----------------------------------------------------------------------===//
2753f127fSDimitry Andric //
3753f127fSDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4753f127fSDimitry Andric // See https://llvm.org/LICENSE.txt for license information.
5753f127fSDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6753f127fSDimitry Andric //
7753f127fSDimitry Andric //===----------------------------------------------------------------------===//
8753f127fSDimitry Andric 
9753f127fSDimitry Andric #ifndef _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_H
10753f127fSDimitry Andric #define _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_H
11753f127fSDimitry Andric 
12753f127fSDimitry Andric #include <__algorithm/in_out_result.h>
1361cfbce3SDimitry Andric #include <__algorithm/ranges_remove_copy_if.h>
14753f127fSDimitry Andric #include <__config>
15753f127fSDimitry Andric #include <__functional/identity.h>
16753f127fSDimitry Andric #include <__functional/invoke.h>
17753f127fSDimitry Andric #include <__functional/ranges_operations.h>
18753f127fSDimitry Andric #include <__iterator/concepts.h>
19753f127fSDimitry Andric #include <__iterator/projected.h>
20753f127fSDimitry Andric #include <__ranges/access.h>
21753f127fSDimitry Andric #include <__ranges/concepts.h>
22753f127fSDimitry Andric #include <__ranges/dangling.h>
23753f127fSDimitry Andric #include <__utility/move.h>
24753f127fSDimitry Andric 
25753f127fSDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
26753f127fSDimitry Andric #  pragma GCC system_header
27753f127fSDimitry Andric #endif
28753f127fSDimitry Andric 
29*b3edf446SDimitry Andric _LIBCPP_PUSH_MACROS
30*b3edf446SDimitry Andric #include <__undef_macros>
31*b3edf446SDimitry Andric 
3206c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20
33753f127fSDimitry Andric 
34753f127fSDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD
35753f127fSDimitry Andric 
36753f127fSDimitry Andric namespace ranges {
37753f127fSDimitry Andric 
38753f127fSDimitry Andric template <class _InIter, class _OutIter>
39753f127fSDimitry Andric using remove_copy_result = in_out_result<_InIter, _OutIter>;
40753f127fSDimitry Andric 
41753f127fSDimitry Andric namespace __remove_copy {
42753f127fSDimitry Andric 
43753f127fSDimitry Andric struct __fn {
4461cfbce3SDimitry Andric   template <input_iterator _InIter,
4561cfbce3SDimitry Andric             sentinel_for<_InIter> _Sent,
4661cfbce3SDimitry Andric             weakly_incrementable _OutIter,
4761cfbce3SDimitry Andric             class _Type,
48753f127fSDimitry Andric             class _Proj = identity>
49753f127fSDimitry Andric     requires indirectly_copyable<_InIter, _OutIter> &&
50753f127fSDimitry Andric              indirect_binary_predicate<ranges::equal_to, projected<_InIter, _Proj>, const _Type*>
5161cfbce3SDimitry Andric   _LIBCPP_HIDE_FROM_ABI constexpr remove_copy_result<_InIter, _OutIter>
operator__fn52753f127fSDimitry Andric   operator()(_InIter __first, _Sent __last, _OutIter __result, const _Type& __value, _Proj __proj = {}) const {
535f757f3fSDimitry Andric     auto __pred = [&](auto&& __val) -> bool { return __value == __val; };
5461cfbce3SDimitry Andric     return ranges::__remove_copy_if_impl(std::move(__first), std::move(__last), std::move(__result), __pred, __proj);
55753f127fSDimitry Andric   }
56753f127fSDimitry Andric 
57753f127fSDimitry Andric   template <input_range _Range, weakly_incrementable _OutIter, class _Type, class _Proj = identity>
58753f127fSDimitry Andric     requires indirectly_copyable<iterator_t<_Range>, _OutIter> &&
59753f127fSDimitry Andric              indirect_binary_predicate<ranges::equal_to, projected<iterator_t<_Range>, _Proj>, const _Type*>
6061cfbce3SDimitry Andric   _LIBCPP_HIDE_FROM_ABI constexpr remove_copy_result<borrowed_iterator_t<_Range>, _OutIter>
operator__fn61753f127fSDimitry Andric   operator()(_Range&& __range, _OutIter __result, const _Type& __value, _Proj __proj = {}) const {
625f757f3fSDimitry Andric     auto __pred = [&](auto&& __val) -> bool { return __value == __val; };
6361cfbce3SDimitry Andric     return ranges::__remove_copy_if_impl(
6461cfbce3SDimitry Andric         ranges::begin(__range), ranges::end(__range), std::move(__result), __pred, __proj);
65753f127fSDimitry Andric   }
66753f127fSDimitry Andric };
67753f127fSDimitry Andric 
68753f127fSDimitry Andric } // namespace __remove_copy
69753f127fSDimitry Andric 
70753f127fSDimitry Andric inline namespace __cpo {
71753f127fSDimitry Andric inline constexpr auto remove_copy = __remove_copy::__fn{};
72753f127fSDimitry Andric } // namespace __cpo
73753f127fSDimitry Andric } // namespace ranges
74753f127fSDimitry Andric 
75753f127fSDimitry Andric _LIBCPP_END_NAMESPACE_STD
76753f127fSDimitry Andric 
7706c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 20
78753f127fSDimitry Andric 
79*b3edf446SDimitry Andric _LIBCPP_POP_MACROS
80*b3edf446SDimitry Andric 
81753f127fSDimitry Andric #endif // _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_H
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