libcxx/include/__algorithm/ranges_find_if_not.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_FIND_IF_NOT_H
  10 #define _LIBCPP___ALGORITHM_RANGES_FIND_IF_NOT_H
  11
  12 #include <__algorithm/ranges_find_if.h>
  13 #include <__config>
  14 #include <__functional/identity.h>
  15 #include <__functional/invoke.h>
  16 #include <__functional/ranges_operations.h>
  17 #include <__iterator/concepts.h>
  18 #include <__iterator/projected.h>
  19 #include <__ranges/access.h>
  20 #include <__ranges/concepts.h>
  21 #include <__ranges/dangling.h>
  22 #include <__utility/forward.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 struct __find_if_not {
  38   template <input_iterator _Ip,
  39             sentinel_for<_Ip> _Sp,
  40             class _Proj = identity,
  41             indirect_unary_predicate<projected<_Ip, _Proj>> _Pred>
  42   [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr _Ip
  43   operator()(_Ip __first, _Sp __last, _Pred __pred, _Proj __proj = {}) const {
  44     auto __pred2 = [&](auto&& __e) -> bool { return !std::invoke(__pred, std::forward<decltype(__e)>(__e)); };
  45     return ranges::__find_if_impl(std::move(__first), std::move(__last), __pred2, __proj);
  46   }
  47
  48   template <input_range _Rp, class _Proj = identity, indirect_unary_predicate<projected<iterator_t<_Rp>, _Proj>> _Pred>
  49   [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr borrowed_iterator_t<_Rp>
  50   operator()(_Rp&& __r, _Pred __pred, _Proj __proj = {}) const {
  51     auto __pred2 = [&](auto&& __e) -> bool { return !std::invoke(__pred, std::forward<decltype(__e)>(__e)); };
  52     return ranges::__find_if_impl(ranges::begin(__r), ranges::end(__r), __pred2, __proj);
  53   }
  54 };
  55
  56 inline namespace __cpo {
  57 inline constexpr auto find_if_not = __find_if_not{};
  58 } // namespace __cpo
  59 } // namespace ranges
  60
  61 _LIBCPP_END_NAMESPACE_STD
  62
  63 #endif // _LIBCPP_STD_VER >= 20
  64
  65 _LIBCPP_POP_MACROS
  66
  67 #endif // _LIBCPP___ALGORITHM_RANGES_FIND_IF_NOT_H