86 lines
4.0 KiB
C++
86 lines
4.0 KiB
C++
// -*- C++ -*-
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//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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#ifndef _LIBCPP___ALGORITHM_EQUAL_H
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#define _LIBCPP___ALGORITHM_EQUAL_H
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#include <__algorithm/comp.h>
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#include <__config>
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#include <__iterator/distance.h>
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#include <__iterator/iterator_traits.h>
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#if !defined(_LIBCPP_HAS_NO_PRAGMA_SYSTEM_HEADER)
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# pragma GCC system_header
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#endif
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_LIBCPP_BEGIN_NAMESPACE_STD
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template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
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_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
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equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _BinaryPredicate __pred) {
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for (; __first1 != __last1; ++__first1, (void)++__first2)
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if (!__pred(*__first1, *__first2))
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return false;
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return true;
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}
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template <class _InputIterator1, class _InputIterator2>
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_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
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equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2) {
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typedef typename iterator_traits<_InputIterator1>::value_type __v1;
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typedef typename iterator_traits<_InputIterator2>::value_type __v2;
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return _VSTD::equal(__first1, __last1, __first2, __equal_to<__v1, __v2>());
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}
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#if _LIBCPP_STD_VER > 11
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template <class _BinaryPredicate, class _InputIterator1, class _InputIterator2>
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inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
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__equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2,
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_BinaryPredicate __pred, input_iterator_tag, input_iterator_tag) {
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for (; __first1 != __last1 && __first2 != __last2; ++__first1, (void)++__first2)
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if (!__pred(*__first1, *__first2))
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return false;
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return __first1 == __last1 && __first2 == __last2;
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}
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template <class _BinaryPredicate, class _RandomAccessIterator1, class _RandomAccessIterator2>
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inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
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__equal(_RandomAccessIterator1 __first1, _RandomAccessIterator1 __last1, _RandomAccessIterator2 __first2,
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_RandomAccessIterator2 __last2, _BinaryPredicate __pred, random_access_iterator_tag,
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random_access_iterator_tag) {
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if (_VSTD::distance(__first1, __last1) != _VSTD::distance(__first2, __last2))
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return false;
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return _VSTD::equal<_RandomAccessIterator1, _RandomAccessIterator2,
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_BinaryPredicate&>(__first1, __last1, __first2, __pred);
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}
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template <class _InputIterator1, class _InputIterator2, class _BinaryPredicate>
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_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
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equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2,
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_BinaryPredicate __pred) {
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return _VSTD::__equal<_BinaryPredicate&>(
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__first1, __last1, __first2, __last2, __pred, typename iterator_traits<_InputIterator1>::iterator_category(),
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typename iterator_traits<_InputIterator2>::iterator_category());
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}
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template <class _InputIterator1, class _InputIterator2>
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_LIBCPP_NODISCARD_EXT inline _LIBCPP_INLINE_VISIBILITY _LIBCPP_CONSTEXPR_AFTER_CXX17 bool
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equal(_InputIterator1 __first1, _InputIterator1 __last1, _InputIterator2 __first2, _InputIterator2 __last2) {
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typedef typename iterator_traits<_InputIterator1>::value_type __v1;
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typedef typename iterator_traits<_InputIterator2>::value_type __v2;
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return _VSTD::__equal(__first1, __last1, __first2, __last2, __equal_to<__v1, __v2>(),
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typename iterator_traits<_InputIterator1>::iterator_category(),
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typename iterator_traits<_InputIterator2>::iterator_category());
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}
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#endif
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_LIBCPP_END_NAMESPACE_STD
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#endif // _LIBCPP___ALGORITHM_EQUAL_H
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