1*fe6060f1SDimitry Andric // -*- C++ -*- 2*fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 3*fe6060f1SDimitry Andric // 4*fe6060f1SDimitry Andric // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 5*fe6060f1SDimitry Andric // See https://llvm.org/LICENSE.txt for license information. 6*fe6060f1SDimitry Andric // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 7*fe6060f1SDimitry Andric // 8*fe6060f1SDimitry Andric //===----------------------------------------------------------------------===// 9*fe6060f1SDimitry Andric 10*fe6060f1SDimitry Andric #ifndef _LIBCPP___ALGORITHM_EQUAL_H 11*fe6060f1SDimitry Andric #define _LIBCPP___ALGORITHM_EQUAL_H 12*fe6060f1SDimitry Andric 13*fe6060f1SDimitry Andric #include <__config> 14*fe6060f1SDimitry Andric #include <__algorithm/comp.h> 15*fe6060f1SDimitry Andric #include <__iterator/iterator_traits.h> 16*fe6060f1SDimitry Andric #include <iterator> // FIXME: replace with <__iterator/distance.h> when it lands 17*fe6060f1SDimitry Andric 18*fe6060f1SDimitry Andric #if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER) 19*fe6060f1SDimitry Andric #pragma GCC system_header 20*fe6060f1SDimitry Andric #endif 21*fe6060f1SDimitry Andric 22*fe6060f1SDimitry Andric _LIBCPP_PUSH_MACROS 23*fe6060f1SDimitry Andric #include <__undef_macros> 24*fe6060f1SDimitry Andric 25*fe6060f1SDimitry Andric _LIBCPP_BEGIN_NAMESPACE_STD 26*fe6060f1SDimitry Andric 27*fe6060f1SDimitry Andric template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate> 28*fe6060f1SDimitry Andric _LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool 29*fe6060f1SDimitry Andric equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _BinaryPredicate __pred) { 30*fe6060f1SDimitry Andric for (; __first1 != __last1; ++__first1, (void)++__first2) 31*fe6060f1SDimitry Andric if (!__pred(*__first1, *__first2)) 32*fe6060f1SDimitry Andric return false; 33*fe6060f1SDimitry Andric return true; 34*fe6060f1SDimitry Andric } 35*fe6060f1SDimitry Andric 36*fe6060f1SDimitry Andric template <class _InputIterator1, class _InputIterator2> 37*fe6060f1SDimitry Andric _LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool 38*fe6060f1SDimitry Andric equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2) { 39*fe6060f1SDimitry Andric typedef typename iterator_traits<_InputIterator1>::value_type __v1; 40*fe6060f1SDimitry Andric typedef typename iterator_traits<_InputIterator2>::value_type __v2; 41*fe6060f1SDimitry Andric return _VSTD::equal(__first1, __last1, __first2, __equal_to<__v1, __v2>()); 42*fe6060f1SDimitry Andric } 43*fe6060f1SDimitry Andric 44*fe6060f1SDimitry Andric #if _LIBCPP_STD_VER > 11 45*fe6060f1SDimitry Andric template <class _BinaryPredicate, class _InputIterator1, class _InputIterator2> 46*fe6060f1SDimitry Andric inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool 47*fe6060f1SDimitry Andric __equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2, 48*fe6060f1SDimitry Andric _BinaryPredicate __pred, input_iterator_tag, input_iterator_tag) { 49*fe6060f1SDimitry Andric for (; __first1 != __last1 && __first2 != __last2; ++__first1, (void)++__first2) 50*fe6060f1SDimitry Andric if (!__pred(*__first1, *__first2)) 51*fe6060f1SDimitry Andric return false; 52*fe6060f1SDimitry Andric return __first1 == __last1 && __first2 == __last2; 53*fe6060f1SDimitry Andric } 54*fe6060f1SDimitry Andric 55*fe6060f1SDimitry Andric template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2> 56*fe6060f1SDimitry Andric inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool 57*fe6060f1SDimitry Andric __equal(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2, 58*fe6060f1SDimitry Andric _RandomAccessIterator2 __last2, _BinaryPredicate __pred, random_access_iterator_tag, 59*fe6060f1SDimitry Andric random_access_iterator_tag) { 60*fe6060f1SDimitry Andric if (_VSTD::distance(__first1, __last1) != _VSTD::distance(__first2, __last2)) 61*fe6060f1SDimitry Andric return false; 62*fe6060f1SDimitry Andric return _VSTD::equal<_RandomAccessIterator1, _RandomAccessIterator2, 63*fe6060f1SDimitry Andric typename add_lvalue_reference<_BinaryPredicate>::type>(__first1, __last1, __first2, __pred); 64*fe6060f1SDimitry Andric } 65*fe6060f1SDimitry Andric 66*fe6060f1SDimitry Andric template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate> 67*fe6060f1SDimitry Andric _LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool 68*fe6060f1SDimitry Andric equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2, 69*fe6060f1SDimitry Andric _BinaryPredicate __pred) { 70*fe6060f1SDimitry Andric return _VSTD::__equal<typename add_lvalue_reference<_BinaryPredicate>::type>( 71*fe6060f1SDimitry Andric __first1, __last1, __first2, __last2, __pred, typename iterator_traits<_InputIterator1>::iterator_category(), 72*fe6060f1SDimitry Andric typename iterator_traits<_InputIterator2>::iterator_category()); 73*fe6060f1SDimitry Andric } 74*fe6060f1SDimitry Andric 75*fe6060f1SDimitry Andric template <class _InputIterator1, class _InputIterator2> 76*fe6060f1SDimitry Andric _LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool 77*fe6060f1SDimitry Andric equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) { 78*fe6060f1SDimitry Andric typedef typename iterator_traits<_InputIterator1>::value_type __v1; 79*fe6060f1SDimitry Andric typedef typename iterator_traits<_InputIterator2>::value_type __v2; 80*fe6060f1SDimitry Andric return _VSTD::__equal(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>(), 81*fe6060f1SDimitry Andric typename iterator_traits<_InputIterator1>::iterator_category(), 82*fe6060f1SDimitry Andric typename iterator_traits<_InputIterator2>::iterator_category()); 83*fe6060f1SDimitry Andric } 84*fe6060f1SDimitry Andric #endif 85*fe6060f1SDimitry Andric 86*fe6060f1SDimitry Andric _LIBCPP_END_NAMESPACE_STD 87*fe6060f1SDimitry Andric 88*fe6060f1SDimitry Andric _LIBCPP_POP_MACROS 89*fe6060f1SDimitry Andric 90*fe6060f1SDimitry Andric #endif // _LIBCPP___ALGORITHM_EQUAL_H 91