libcxx/include/__cxx03/__algorithm/ranges_none_of.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___CXX03___ALGORITHM_RANGES_NONE_OF_H
  10 #define _LIBCPP___CXX03___ALGORITHM_RANGES_NONE_OF_H
  11
  12 #include <__cxx03/__config>
  13 #include <__cxx03/__functional/identity.h>
  14 #include <__cxx03/__functional/invoke.h>
  15 #include <__cxx03/__iterator/concepts.h>
  16 #include <__cxx03/__iterator/projected.h>
  17 #include <__cxx03/__ranges/access.h>
  18 #include <__cxx03/__ranges/concepts.h>
  19 #include <__cxx03/__utility/move.h>
  20
  21 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
  22 #  pragma GCC system_header
  23 #endif
  24
  25 _LIBCPP_PUSH_MACROS
  26 #include <__cxx03/__undef_macros>
  27
  28 #if _LIBCPP_STD_VER >= 20
  29
  30 _LIBCPP_BEGIN_NAMESPACE_STD
  31
  32 namespace ranges {
  33 namespace __none_of {
  34 struct __fn {
  35   template <class _Iter, class _Sent, class _Proj, class _Pred>
  36   _LIBCPP_HIDE_FROM_ABI constexpr static bool
  37   __none_of_impl(_Iter __first, _Sent __last, _Pred& __pred, _Proj& __proj) {
  38     for (; __first != __last; ++__first) {
  39       if (std::invoke(__pred, std::invoke(__proj, *__first)))
  40         return false;
  41     }
  42     return true;
  43   }
  44
  45   template <input_iterator _Iter,
  46             sentinel_for<_Iter> _Sent,
  47             class _Proj = identity,
  48             indirect_unary_predicate<projected<_Iter, _Proj>> _Pred>
  49   [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool
  50   operator()(_Iter __first, _Sent __last, _Pred __pred = {}, _Proj __proj = {}) const {
  51     return __none_of_impl(std::move(__first), std::move(__last), __pred, __proj);
  52   }
  53
  54   template <input_range _Range,
  55             class _Proj = identity,
  56             indirect_unary_predicate<projected<iterator_t<_Range>, _Proj>> _Pred>
  57   [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool
  58   operator()(_Range&& __range, _Pred __pred, _Proj __proj = {}) const {
  59     return __none_of_impl(ranges::begin(__range), ranges::end(__range), __pred, __proj);
  60   }
  61 };
  62 } // namespace __none_of
  63
  64 inline namespace __cpo {
  65 inline constexpr auto none_of = __none_of::__fn{};
  66 } // namespace __cpo
  67 } // namespace ranges
  68
  69 _LIBCPP_END_NAMESPACE_STD
  70
  71 #endif // _LIBCPP_STD_VER >= 20
  72
  73 _LIBCPP_POP_MACROS
  74
  75 #endif // _LIBCPP___CXX03___ALGORITHM_RANGES_NONE_OF_H