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 <__functional/invoke.h> 17 #include <__iterator/iterator_traits.h> 18 #include <__type_traits/is_callable.h> 19 #include <__utility/move.h> 20 21 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 22 # pragma GCC system_header 23 #endif 24 25 _LIBCPP_BEGIN_NAMESPACE_STD 26 27 template <class _Iter1, class _Sent1, class _Iter2, class _Sent2, class _Comp, class _Proj1, class _Proj2> 28 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool 29 __includes(_Iter1 __first1, _Sent1 __last1, _Iter2 __first2, _Sent2 __last2, 30 _Comp&& __comp, _Proj1&& __proj1, _Proj2&& __proj2) { 31 for (; __first2 != __last2; ++__first1) { 32 if (__first1 == __last1 || std::__invoke( 33 __comp, std::__invoke(__proj2, *__first2), std::__invoke(__proj1, *__first1))) 34 return false; 35 if (!std::__invoke(__comp, std::__invoke(__proj1, *__first1), std::__invoke(__proj2, *__first2))) 36 ++__first2; 37 } 38 return true; 39 } 40 41 template <class _InputIterator1, class _InputIterator2, class _Compare> 42 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool includes( 43 _InputIterator1 __first1, 44 _InputIterator1 __last1, 45 _InputIterator2 __first2, 46 _InputIterator2 __last2, 47 _Compare __comp) { 48 static_assert(__is_callable<_Compare, decltype(*__first1), decltype(*__first2)>::value, 49 "Comparator has to be callable"); 50 51 return std::__includes( 52 std::move(__first1), 53 std::move(__last1), 54 std::move(__first2), 55 std::move(__last2), 56 static_cast<__comp_ref_type<_Compare> >(__comp), 57 __identity(), 58 __identity()); 59 } 60 61 template <class _InputIterator1, class _InputIterator2> 62 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_SINCE_CXX20 bool 63 includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) { 64 return std::includes(std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), __less<>()); 65 } 66 67 _LIBCPP_END_NAMESPACE_STD 68 69 #endif // _LIBCPP___ALGORITHM_INCLUDES_H 70