libcxx/include/__cxx03/__algorithm/ranges_is_heap_until.h

   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_IS_HEAP_UNTIL_H
  10 #define _LIBCPP___ALGORITHM_RANGES_IS_HEAP_UNTIL_H
  11
  12 #include <__cxx03/__algorithm/is_heap_until.h>
  13 #include <__cxx03/__algorithm/make_projected.h>
  14 #include <__cxx03/__config>
  15 #include <__cxx03/__functional/identity.h>
  16 #include <__cxx03/__functional/ranges_operations.h>
  17 #include <__cxx03/__iterator/concepts.h>
  18 #include <__cxx03/__iterator/iterator_traits.h>
  19 #include <__cxx03/__iterator/next.h>
  20 #include <__cxx03/__iterator/projected.h>
  21 #include <__cxx03/__ranges/access.h>
  22 #include <__cxx03/__ranges/concepts.h>
  23 #include <__cxx03/__ranges/dangling.h>
  24 #include <__cxx03/__utility/move.h>
  25
  26 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  27 #  pragma GCC system_header
  28 #endif
  29
  30 _LIBCPP_PUSH_MACROS
  31 #include <__cxx03/__undef_macros>
  32
  33 #if _LIBCPP_STD_VER >= 20
  34
  35 _LIBCPP_BEGIN_NAMESPACE_STD
  36
  37 namespace ranges {
  38 namespace __is_heap_until {
  39
  40 struct __fn {
  41   template <class _Iter, class _Sent, class _Proj, class _Comp>
  42   _LIBCPP_HIDE_FROM_ABI constexpr static _Iter
  43   __is_heap_until_fn_impl(_Iter __first, _Sent __last, _Comp& __comp, _Proj& __proj) {
  44     auto __last_iter        = ranges::next(__first, __last);
  45     auto&& __projected_comp = std::__make_projected(__comp, __proj);
  46
  47     return std::__is_heap_until(std::move(__first), std::move(__last_iter), __projected_comp);
  48   }
  49
  50   template <random_access_iterator _Iter,
  51             sentinel_for<_Iter> _Sent,
  52             class _Proj                                               = identity,
  53             indirect_strict_weak_order<projected<_Iter, _Proj>> _Comp = ranges::less>
  54   [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Iter
  55   operator()(_Iter __first, _Sent __last, _Comp __comp = {}, _Proj __proj = {}) const {
  56     return __is_heap_until_fn_impl(std::move(__first), std::move(__last), __comp, __proj);
  57   }
  58
  59   template <random_access_range _Range,
  60             class _Proj                                                            = identity,
  61             indirect_strict_weak_order<projected<iterator_t<_Range>, _Proj>> _Comp = ranges::less>
  62   [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Range>
  63   operator()(_Range&& __range, _Comp __comp = {}, _Proj __proj = {}) const {
  64     return __is_heap_until_fn_impl(ranges::begin(__range), ranges::end(__range), __comp, __proj);
  65   }
  66 };
  67
  68 } // namespace __is_heap_until
  69
  70 inline namespace __cpo {
  71 inline constexpr auto is_heap_until = __is_heap_until::__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_IS_HEAP_UNTIL_H