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_INCLUDES_H 10 #define _LIBCPP___ALGORITHM_INCLUDES_H 11 12 #include <__algorithm/comp.h> 13 #include <__algorithm/comp_ref_type.h> 14 #include <__config> 15 #include <__functional/identity.h> 16 #include <__type_traits/invoke.h> 17 #include <__type_traits/is_callable.h> 18 #include <__utility/move.h> 19 20 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 21 # pragma GCC system_header 22 #endif 23 24 _LIBCPP_PUSH_MACROS 25 #include <__undef_macros> 26 27 _LIBCPP_BEGIN_NAMESPACE_STD 28 29 template <class _Iter1, class _Sent1, class _Iter2, class _Sent2, class _Comp, class _Proj1, class _Proj2> 30 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool __includes( 31 _Iter1 __first1, 32 _Sent1 __last1, 33 _Iter2 __first2, 34 _Sent2 __last2, 35 _Comp&& __comp, 36 _Proj1&& __proj1, 37 _Proj2&& __proj2) { 38 for (; __first2 != __last2; ++__first1) { 39 if (__first1 == __last1 || 40 std::__invoke(__comp, std::__invoke(__proj2, *__first2), std::__invoke(__proj1, *__first1))) 41 return false; 42 if (!std::__invoke(__comp, std::__invoke(__proj1, *__first1), std::__invoke(__proj2, *__first2))) 43 ++__first2; 44 } 45 return true; 46 } 47 48 template <class _InputIterator1, class _InputIterator2, class _Compare> 49 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool 50 includes(_InputIterator1 __first1, 51 _InputIterator1 __last1, 52 _InputIterator2 __first2, 53 _InputIterator2 __last2, 54 _Compare __comp) { 55 static_assert( 56 __is_callable<_Compare&, decltype(*__first1), decltype(*__first2)>::value, "The comparator has to be callable"); 57 58 return std::__includes( 59 std::move(__first1), 60 std::move(__last1), 61 std::move(__first2), 62 std::move(__last2), 63 static_cast<__comp_ref_type<_Compare> >(__comp), 64 __identity(), 65 __identity()); 66 } 67 68 template <class _InputIterator1, class _InputIterator2> 69 [[__nodiscard__]] inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool 70 includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) { 71 return std::includes(std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), __less<>()); 72 } 73 74 _LIBCPP_END_NAMESPACE_STD 75 76 _LIBCPP_POP_MACROS 77 78 #endif // _LIBCPP___ALGORITHM_INCLUDES_H 79