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_INPLACE_MERGE_H 10 #define _LIBCPP___ALGORITHM_RANGES_INPLACE_MERGE_H 11 12 #include <__algorithm/inplace_merge.h> 13 #include <__algorithm/make_projected.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/iterator_traits.h> 20 #include <__iterator/projected.h> 21 #include <__iterator/sortable.h> 22 #include <__ranges/access.h> 23 #include <__ranges/concepts.h> 24 #include <__ranges/dangling.h> 25 #include <__utility/forward.h> 26 #include <__utility/move.h> 27 28 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 29 # pragma GCC system_header 30 #endif 31 32 #if _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES) 33 34 _LIBCPP_BEGIN_NAMESPACE_STD 35 36 namespace ranges { 37 namespace __inplace_merge { 38 39 struct __fn { 40 41 template <bidirectional_iterator _Iter, sentinel_for<_Iter> _Sent, class _Comp = ranges::less, class _Proj = identity> 42 requires sortable<_Iter, _Comp, _Proj> 43 _LIBCPP_HIDE_FROM_ABI 44 _Iter operator()(_Iter __first, _Iter __middle, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const { 45 // TODO: implement 46 (void)__first; (void)__middle; (void)__last; (void)__comp; (void)__proj; 47 return {}; 48 } 49 50 template <bidirectional_range _Range, class _Comp = ranges::less, class _Proj = identity> 51 requires sortable<iterator_t<_Range>, _Comp, _Proj> 52 _LIBCPP_HIDE_FROM_ABI 53 borrowed_iterator_t<_Range> operator()(_Range&& __range, iterator_t<_Range> __middle, 54 _Comp __comp = {}, _Proj __proj = {}) const { 55 // TODO: implement 56 (void)__range; (void)__middle; (void)__comp; (void)__proj; 57 return {}; 58 } 59 60 }; 61 62 } // namespace __inplace_merge 63 64 inline namespace __cpo { 65 inline constexpr auto inplace_merge = __inplace_merge::__fn{}; 66 } // namespace __cpo 67 } // namespace ranges 68 69 _LIBCPP_END_NAMESPACE_STD 70 71 #endif // _LIBCPP_STD_VER > 17 && !defined(_LIBCPP_HAS_NO_INCOMPLETE_RANGES) 72 73 #endif // _LIBCPP___ALGORITHM_RANGES_INPLACE_MERGE_H 74