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 <__config> 13 #include <__algorithm/comp_ref_type.h> 14 #include <__iterator/iterator_traits.h> 15 16 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 17 #pragma GCC system_header 18 #endif 19 20 _LIBCPP_PUSH_MACROS 21 #include <__undef_macros> 22 23 _LIBCPP_BEGIN_NAMESPACE_STD 24 25 template <class _Compare, class _InputIterator1, class _InputIterator2> 26 _LIBCPP_CONSTEXPR_AFTER_CXX17 bool 27 __includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2, 28 _Compare __comp) 29 { 30 for (; __first2 != __last2; ++__first1) 31 { 32 if (__first1 == __last1 || __comp(*__first2, *__first1)) 33 return false; 34 if (!__comp(*__first1, *__first2)) 35 ++__first2; 36 } 37 return true; 38 } 39 40 template <class _InputIterator1, class _InputIterator2, class _Compare> 41 _LIBCPP_NODISCARD_EXT inline 42 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 43 bool 44 includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2, 45 _Compare __comp) 46 { 47 typedef typename __comp_ref_type<_Compare>::type _Comp_ref; 48 return _VSTD::__includes<_Comp_ref>(__first1, __last1, __first2, __last2, __comp); 49 } 50 51 template <class _InputIterator1, class _InputIterator2> 52 _LIBCPP_NODISCARD_EXT inline 53 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 54 bool 55 includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) 56 { 57 return _VSTD::includes(__first1, __last1, __first2, __last2, 58 __less<typename iterator_traits<_InputIterator1>::value_type, 59 typename iterator_traits<_InputIterator2>::value_type>()); 60 } 61 62 _LIBCPP_END_NAMESPACE_STD 63 64 _LIBCPP_POP_MACROS 65 66 #endif // _LIBCPP___ALGORITHM_INCLUDES_H 67