1*0fca6ea1SDimitry Andric //===----------------------------------------------------------------------===// 2*0fca6ea1SDimitry Andric // 3*0fca6ea1SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4*0fca6ea1SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 5*0fca6ea1SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6*0fca6ea1SDimitry Andric // 7*0fca6ea1SDimitry Andric //===----------------------------------------------------------------------===// 8*0fca6ea1SDimitry Andric 9*0fca6ea1SDimitry Andric #ifndef _LIBCPP___ALGORITHM_RANGES_CONTAINS_SUBRANGE_H 10*0fca6ea1SDimitry Andric #define _LIBCPP___ALGORITHM_RANGES_CONTAINS_SUBRANGE_H 11*0fca6ea1SDimitry Andric 12*0fca6ea1SDimitry Andric #include <__algorithm/ranges_search.h> 13*0fca6ea1SDimitry Andric #include <__config> 14*0fca6ea1SDimitry Andric #include <__functional/identity.h> 15*0fca6ea1SDimitry Andric #include <__functional/ranges_operations.h> 16*0fca6ea1SDimitry Andric #include <__functional/reference_wrapper.h> 17*0fca6ea1SDimitry Andric #include <__iterator/concepts.h> 18*0fca6ea1SDimitry Andric #include <__iterator/indirectly_comparable.h> 19*0fca6ea1SDimitry Andric #include <__iterator/projected.h> 20*0fca6ea1SDimitry Andric #include <__ranges/access.h> 21*0fca6ea1SDimitry Andric #include <__ranges/concepts.h> 22*0fca6ea1SDimitry Andric #include <__ranges/size.h> 23*0fca6ea1SDimitry Andric #include <__ranges/subrange.h> 24*0fca6ea1SDimitry Andric #include <__utility/move.h> 25*0fca6ea1SDimitry Andric 26*0fca6ea1SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 27*0fca6ea1SDimitry Andric # pragma GCC system_header 28*0fca6ea1SDimitry Andric #endif 29*0fca6ea1SDimitry Andric 30*0fca6ea1SDimitry Andric _LIBCPP_PUSH_MACROS 31*0fca6ea1SDimitry Andric #include <__undef_macros> 32*0fca6ea1SDimitry Andric 33*0fca6ea1SDimitry Andric #if _LIBCPP_STD_VER >= 23 34*0fca6ea1SDimitry Andric 35*0fca6ea1SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 36*0fca6ea1SDimitry Andric 37*0fca6ea1SDimitry Andric namespace ranges { 38*0fca6ea1SDimitry Andric namespace __contains_subrange { 39*0fca6ea1SDimitry Andric struct __fn { 40*0fca6ea1SDimitry Andric template <forward_iterator _Iter1, 41*0fca6ea1SDimitry Andric sentinel_for<_Iter1> _Sent1, 42*0fca6ea1SDimitry Andric forward_iterator _Iter2, 43*0fca6ea1SDimitry Andric sentinel_for<_Iter2> _Sent2, 44*0fca6ea1SDimitry Andric class _Pred = ranges::equal_to, 45*0fca6ea1SDimitry Andric class _Proj1 = identity, 46*0fca6ea1SDimitry Andric class _Proj2 = identity> 47*0fca6ea1SDimitry Andric requires indirectly_comparable<_Iter1, _Iter2, _Pred, _Proj1, _Proj2> 48*0fca6ea1SDimitry Andric [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool static operator()( 49*0fca6ea1SDimitry Andric _Iter1 __first1, 50*0fca6ea1SDimitry Andric _Sent1 __last1, 51*0fca6ea1SDimitry Andric _Iter2 __first2, 52*0fca6ea1SDimitry Andric _Sent2 __last2, 53*0fca6ea1SDimitry Andric _Pred __pred = {}, 54*0fca6ea1SDimitry Andric _Proj1 __proj1 = {}, 55*0fca6ea1SDimitry Andric _Proj2 __proj2 = {}) { 56*0fca6ea1SDimitry Andric if (__first2 == __last2) 57*0fca6ea1SDimitry Andric return true; 58*0fca6ea1SDimitry Andric 59*0fca6ea1SDimitry Andric auto __ret = ranges::search( 60*0fca6ea1SDimitry Andric std::move(__first1), __last1, std::move(__first2), __last2, __pred, std::ref(__proj1), std::ref(__proj2)); 61*0fca6ea1SDimitry Andric return __ret.empty() == false; 62*0fca6ea1SDimitry Andric } 63*0fca6ea1SDimitry Andric 64*0fca6ea1SDimitry Andric template <forward_range _Range1, 65*0fca6ea1SDimitry Andric forward_range _Range2, 66*0fca6ea1SDimitry Andric class _Pred = ranges::equal_to, 67*0fca6ea1SDimitry Andric class _Proj1 = identity, 68*0fca6ea1SDimitry Andric class _Proj2 = identity> 69*0fca6ea1SDimitry Andric requires indirectly_comparable<iterator_t<_Range1>, iterator_t<_Range2>, _Pred, _Proj1, _Proj2> 70*0fca6ea1SDimitry Andric [[nodiscard]] _LIBCPP_HIDE_FROM_ABI constexpr bool static 71*0fca6ea1SDimitry Andric operator()(_Range1&& __range1, _Range2&& __range2, _Pred __pred = {}, _Proj1 __proj1 = {}, _Proj2 __proj2 = {}) { 72*0fca6ea1SDimitry Andric if constexpr (sized_range<_Range2>) { 73*0fca6ea1SDimitry Andric if (ranges::size(__range2) == 0) 74*0fca6ea1SDimitry Andric return true; 75*0fca6ea1SDimitry Andric } else { 76*0fca6ea1SDimitry Andric if (ranges::begin(__range2) == ranges::end(__range2)) 77*0fca6ea1SDimitry Andric return true; 78*0fca6ea1SDimitry Andric } 79*0fca6ea1SDimitry Andric 80*0fca6ea1SDimitry Andric auto __ret = ranges::search(__range1, __range2, __pred, std::ref(__proj1), std::ref(__proj2)); 81*0fca6ea1SDimitry Andric return __ret.empty() == false; 82*0fca6ea1SDimitry Andric } 83*0fca6ea1SDimitry Andric }; 84*0fca6ea1SDimitry Andric } // namespace __contains_subrange 85*0fca6ea1SDimitry Andric 86*0fca6ea1SDimitry Andric inline namespace __cpo { 87*0fca6ea1SDimitry Andric inline constexpr auto contains_subrange = __contains_subrange::__fn{}; 88*0fca6ea1SDimitry Andric } // namespace __cpo 89*0fca6ea1SDimitry Andric } // namespace ranges 90*0fca6ea1SDimitry Andric 91*0fca6ea1SDimitry Andric _LIBCPP_END_NAMESPACE_STD 92*0fca6ea1SDimitry Andric 93*0fca6ea1SDimitry Andric #endif // _LIBCPP_STD_VER >= 23 94*0fca6ea1SDimitry Andric 95*0fca6ea1SDimitry Andric _LIBCPP_POP_MACROS 96*0fca6ea1SDimitry Andric 97*0fca6ea1SDimitry Andric #endif // _LIBCPP___ALGORITHM_RANGES_CONTAINS_SUBRANGE_H 98