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.h> 14 #include <__algorithm/comp_ref_type.h> 15 #include <__iterator/iterator_traits.h> 16 17 #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 18 #pragma GCC system_header 19 #endif 20 21 _LIBCPP_PUSH_MACROS 22 #include <__undef_macros> 23 24 _LIBCPP_BEGIN_NAMESPACE_STD 25 26 template <class _Compare, class _InputIterator1, class _InputIterator2> 27 _LIBCPP_CONSTEXPR_AFTER_CXX17 bool 28 __includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2, 29 _Compare __comp) 30 { 31 for (; __first2 != __last2; ++__first1) 32 { 33 if (__first1 == __last1 || __comp(*__first2, *__first1)) 34 return false; 35 if (!__comp(*__first1, *__first2)) 36 ++__first2; 37 } 38 return true; 39 } 40 41 template <class _InputIterator1, class _InputIterator2, class _Compare> 42 _LIBCPP_NODISCARD_EXT inline 43 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 44 bool 45 includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2, 46 _Compare __comp) 47 { 48 typedef typename __comp_ref_type<_Compare>::type _Comp_ref; 49 return _VSTD::__includes<_Comp_ref>(__first1, __last1, __first2, __last2, __comp); 50 } 51 52 template <class _InputIterator1, class _InputIterator2> 53 _LIBCPP_NODISCARD_EXT inline 54 _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 55 bool 56 includes(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) 57 { 58 return _VSTD::includes(__first1, __last1, __first2, __last2, 59 __less<typename iterator_traits<_InputIterator1>::value_type, 60 typename iterator_traits<_InputIterator2>::value_type>()); 61 } 62 63 _LIBCPP_END_NAMESPACE_STD 64 65 _LIBCPP_POP_MACROS 66 67 #endif // _LIBCPP___ALGORITHM_INCLUDES_H 68