1753f127fSDimitry Andric //===----------------------------------------------------------------------===// 2753f127fSDimitry Andric // 3753f127fSDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4753f127fSDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5753f127fSDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6753f127fSDimitry Andric // 7753f127fSDimitry Andric //===----------------------------------------------------------------------===// 8753f127fSDimitry Andric 9753f127fSDimitry Andric #ifndef _LIBCPP___ALGORITHM_RANGES_SHUFFLE_H 10753f127fSDimitry Andric #define _LIBCPP___ALGORITHM_RANGES_SHUFFLE_H 11753f127fSDimitry Andric 12fcaf7f86SDimitry Andric #include <__algorithm/iterator_operations.h> 13753f127fSDimitry Andric #include <__algorithm/shuffle.h> 1461cfbce3SDimitry Andric #include <__algorithm/uniform_random_bit_generator_adaptor.h> 15753f127fSDimitry Andric #include <__config> 16753f127fSDimitry Andric #include <__functional/invoke.h> 17753f127fSDimitry Andric #include <__functional/ranges_operations.h> 18753f127fSDimitry Andric #include <__iterator/concepts.h> 19753f127fSDimitry Andric #include <__iterator/iterator_traits.h> 20fcaf7f86SDimitry Andric #include <__iterator/next.h> 21753f127fSDimitry Andric #include <__iterator/permutable.h> 22753f127fSDimitry Andric #include <__random/uniform_random_bit_generator.h> 23753f127fSDimitry Andric #include <__ranges/access.h> 24753f127fSDimitry Andric #include <__ranges/concepts.h> 25753f127fSDimitry Andric #include <__ranges/dangling.h> 2606c3fb27SDimitry Andric #include <__type_traits/remove_reference.h> 27753f127fSDimitry Andric #include <__utility/forward.h> 28753f127fSDimitry Andric #include <__utility/move.h> 29753f127fSDimitry Andric 30753f127fSDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 31753f127fSDimitry Andric # pragma GCC system_header 32753f127fSDimitry Andric #endif 33753f127fSDimitry Andric 34*b3edf446SDimitry Andric _LIBCPP_PUSH_MACROS 35*b3edf446SDimitry Andric #include <__undef_macros> 36*b3edf446SDimitry Andric 3706c3fb27SDimitry Andric #if _LIBCPP_STD_VER >= 20 38753f127fSDimitry Andric 39753f127fSDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 40753f127fSDimitry Andric 41753f127fSDimitry Andric namespace ranges { 42753f127fSDimitry Andric namespace __shuffle { 43753f127fSDimitry Andric 44753f127fSDimitry Andric struct __fn { 45753f127fSDimitry Andric template <random_access_iterator _Iter, sentinel_for<_Iter> _Sent, class _Gen> 46753f127fSDimitry Andric requires permutable<_Iter> && uniform_random_bit_generator<remove_reference_t<_Gen>> 4706c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI _Iter operator()(_Iter __first, _Sent __last, _Gen&& __gen) const { 48fcaf7f86SDimitry Andric _ClassicGenAdaptor<_Gen> __adapted_gen(__gen); 49fcaf7f86SDimitry Andric return std::__shuffle<_RangeAlgPolicy>(std::move(__first), std::move(__last), __adapted_gen); 50753f127fSDimitry Andric } 51753f127fSDimitry Andric 52753f127fSDimitry Andric template <random_access_range _Range, class _Gen> 53753f127fSDimitry Andric requires permutable<iterator_t<_Range>> && uniform_random_bit_generator<remove_reference_t<_Gen>> 5406c3fb27SDimitry Andric _LIBCPP_HIDE_FROM_ABI borrowed_iterator_t<_Range> operator()(_Range&& __range, _Gen&& __gen) const { 55fcaf7f86SDimitry Andric return (*this)(ranges::begin(__range), ranges::end(__range), std::forward<_Gen>(__gen)); 56753f127fSDimitry Andric } 57753f127fSDimitry Andric }; 58753f127fSDimitry Andric 59753f127fSDimitry Andric } // namespace __shuffle 60753f127fSDimitry Andric 61753f127fSDimitry Andric inline namespace __cpo { 62753f127fSDimitry Andric inline constexpr auto shuffle = __shuffle::__fn{}; 63753f127fSDimitry Andric } // namespace __cpo 64753f127fSDimitry Andric } // namespace ranges 65753f127fSDimitry Andric 66753f127fSDimitry Andric _LIBCPP_END_NAMESPACE_STD 67753f127fSDimitry Andric 6806c3fb27SDimitry Andric #endif // _LIBCPP_STD_VER >= 20 69753f127fSDimitry Andric 70*b3edf446SDimitry Andric _LIBCPP_POP_MACROS 71*b3edf446SDimitry Andric 72753f127fSDimitry Andric #endif // _LIBCPP___ALGORITHM_RANGES_SHUFFLE_H 73