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 <__iterator/iterator_traits.h> 16 #include <__utility/move.h> 17 18 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 19 # pragma GCC system_header 20 #endif 21 22 _LIBCPP_BEGIN_NAMESPACE_STD 23 24 template <class _Iter1, class _Sent1, class _Iter2, class _Sent2, class _Comp> 25 _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 bool 26 __includes(_Iter1 __first1, _Sent1 __last1, _Iter2 __first2, _Sent2 __last2, _Comp&& __comp) { 27 for (; __first2 != __last2; ++__first1) { 28 if (__first1 == __last1 || __comp(*__first2, *__first1)) 29 return false; 30 if (!__comp(*__first1, *__first2)) 31 ++__first2; 32 } 33 return true; 34 } 35 36 template <class _InputIterator1, class _InputIterator2, class _Compare> 37 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 bool includes( 38 _InputIterator1 __first1, 39 _InputIterator1 __last1, 40 _InputIterator2 __first2, 41 _InputIterator2 __last2, 42 _Compare __comp) { 43 typedef typename __comp_ref_type<_Compare>::type _Comp_ref; 44 return std::__includes( 45 std::move(__first1), std::move(__last1), std::move(__first2), std::move(__last2), static_cast<_Comp_ref>(__comp)); 46 } 47 48 template <class _InputIterator1, class _InputIterator2> 49 _LIBCPP_NODISCARD_EXT inline _LIBCPP_HIDE_FROM_ABI _LIBCPP_CONSTEXPR_AFTER_CXX17 bool 50 includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) { 51 return std::includes( 52 std::move(__first1), 53 std::move(__last1), 54 std::move(__first2), 55 std::move(__last2), 56 __less<typename iterator_traits<_InputIterator1>::value_type, 57 typename iterator_traits<_InputIterator2>::value_type>()); 58 } 59 60 _LIBCPP_END_NAMESPACE_STD 61 62 #endif // _LIBCPP___ALGORITHM_INCLUDES_H 63