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 36 namespace ranges { 37 38 template <class _InIter, class _OutIter> 39 using remove_copy_result = in_out_result<_InIter, _OutIter>; 40 41 namespace __remove_copy { 42 43 struct __fn { 44 template <input_iterator _InIter, 45 sentinel_for<_InIter> _Sent, 46 weakly_incrementable _OutIter, 47 class _Type, 48 class _Proj = identity> 49 requires indirectly_copyable<_InIter, _OutIter> && 50 indirect_binary_predicate<ranges::equal_to, projected<_InIter, _Proj>, const _Type*> 51 _LIBCPP_HIDE_FROM_ABI constexpr remove_copy_result<_InIter, _OutIter> 52 operator()(_InIter __first, _Sent __last, _OutIter __result, const _Type& __value, _Proj __proj = {}) const { 53 auto __pred = [&](auto&& __val) -> bool { return __value == __val; }; 54 return ranges::__remove_copy_if_impl(std::move(__first), std::move(__last), std::move(__result), __pred, __proj); 55 } 56 57 template <input_range _Range, weakly_incrementable _OutIter, class _Type, class _Proj = identity> 58 requires indirectly_copyable<iterator_t<_Range>, _OutIter> && 59 indirect_binary_predicate<ranges::equal_to, projected<iterator_t<_Range>, _Proj>, const _Type*> 60 _LIBCPP_HIDE_FROM_ABI constexpr remove_copy_result<borrowed_iterator_t<_Range>, _OutIter> 61 operator()(_Range&& __range, _OutIter __result, const _Type& __value, _Proj __proj = {}) const { 62 auto __pred = [&](auto&& __val) -> bool { return __value == __val; }; 63 return ranges::__remove_copy_if_impl( 64 ranges::begin(__range), ranges::end(__range), std::move(__result), __pred, __proj); 65 } 66 }; 67 68 } // namespace __remove_copy 69 70 inline namespace __cpo { 71 inline constexpr auto remove_copy = __remove_copy::__fn{}; 72 } // namespace __cpo 73 } // namespace ranges 74 75 _LIBCPP_END_NAMESPACE_STD 76 77 #endif // _LIBCPP_STD_VER >= 20 78 79 _LIBCPP_POP_MACROS 80 81 #endif // _LIBCPP___ALGORITHM_RANGES_REMOVE_COPY_H 82