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1 //===----------------------------------------------------------------------===//
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2 //
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3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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4 // See https://llvm.org/LICENSE.txt for license information.
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5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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6 //
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7 //===----------------------------------------------------------------------===//
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8
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9 #ifndef _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_H
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10 #define _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_H
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11
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12 #include <__algorithm/in_out_result.h>
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13 #include <__algorithm/ranges_remove_copy_if.h>
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14 #include <__config>
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15 #include <__functional/identity.h>
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16 #include <__functional/invoke.h>
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17 #include <__functional/ranges_operations.h>
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18 #include <__iterator/concepts.h>
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19 #include <__iterator/projected.h>
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20 #include <__ranges/access.h>
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21 #include <__ranges/concepts.h>
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22 #include <__ranges/dangling.h>
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23 #include <__utility/move.h>
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24
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25 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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26 # pragma GCC system_header
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27 #endif
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28
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252
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29 #if _LIBCPP_STD_VER >= 20
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236
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30
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31 _LIBCPP_BEGIN_NAMESPACE_STD
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32
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33 namespace ranges {
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34
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35 template <class _InIter, class _OutIter>
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36 using remove_copy_result = in_out_result<_InIter, _OutIter>;
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37
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38 namespace __remove_copy {
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39
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252
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40 struct __fn {
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41 template <input_iterator _InIter,
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42 sentinel_for<_InIter> _Sent,
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43 weakly_incrementable _OutIter,
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44 class _Type,
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45 class _Proj = identity>
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46 requires indirectly_copyable<_InIter, _OutIter> &&
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47 indirect_binary_predicate<ranges::equal_to, projected<_InIter, _Proj>, const _Type*>
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48 _LIBCPP_HIDE_FROM_ABI constexpr remove_copy_result<_InIter, _OutIter>
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49 operator()(_InIter __first, _Sent __last, _OutIter __result, const _Type& __value, _Proj __proj = {}) const {
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50 auto __pred = [&](auto&& __val) { return __value == __val; };
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51 return ranges::__remove_copy_if_impl(std::move(__first), std::move(__last), std::move(__result), __pred, __proj);
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52 }
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236
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53
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252
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54 template <input_range _Range, weakly_incrementable _OutIter, class _Type, class _Proj = identity>
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55 requires indirectly_copyable<iterator_t<_Range>, _OutIter> &&
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56 indirect_binary_predicate<ranges::equal_to, projected<iterator_t<_Range>, _Proj>, const _Type*>
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57 _LIBCPP_HIDE_FROM_ABI constexpr remove_copy_result<borrowed_iterator_t<_Range>, _OutIter>
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58 operator()(_Range&& __range, _OutIter __result, const _Type& __value, _Proj __proj = {}) const {
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59 auto __pred = [&](auto&& __val) { return __value == __val; };
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60 return ranges::__remove_copy_if_impl(
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61 ranges::begin(__range), ranges::end(__range), std::move(__result), __pred, __proj);
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62 }
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63 };
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236
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64
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65 } // namespace __remove_copy
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66
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67 inline namespace __cpo {
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252
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68 inline constexpr auto remove_copy = __remove_copy::__fn{};
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236
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69 } // namespace __cpo
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70 } // namespace ranges
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71
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72 _LIBCPP_END_NAMESPACE_STD
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73
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252
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74 #endif // _LIBCPP_STD_VER >= 20
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236
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75
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76 #endif // _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_H
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