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ultra_embe |
// Debugging support implementation -*- C++ -*-
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// Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
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// Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/** @file debug/functions.h
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* This file is a GNU debug extension to the Standard C++ Library.
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*/
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#ifndef _GLIBCXX_DEBUG_FUNCTIONS_H
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#define _GLIBCXX_DEBUG_FUNCTIONS_H 1
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#include <bits/c++config.h>
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#include <bits/stl_iterator_base_types.h> // for iterator_traits, categories and
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// _Iter_base
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#include <bits/cpp_type_traits.h> // for __is_integer
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#include <debug/formatter.h>
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namespace __gnu_debug
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{
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template<typename _Iterator, typename _Sequence>
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class _Safe_iterator;
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// An arbitrary iterator pointer is not singular.
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inline bool
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__check_singular_aux(const void*) { return false; }
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// We may have an iterator that derives from _Safe_iterator_base but isn't
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// a _Safe_iterator.
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template<typename _Iterator>
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inline bool
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__check_singular(_Iterator& __x)
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{ return __check_singular_aux(&__x); }
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/** Non-NULL pointers are nonsingular. */
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template<typename _Tp>
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inline bool
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__check_singular(const _Tp* __ptr)
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{ return __ptr == 0; }
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/** Safe iterators know if they are singular. */
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template<typename _Iterator, typename _Sequence>
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inline bool
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__check_singular(const _Safe_iterator<_Iterator, _Sequence>& __x)
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{ return __x._M_singular(); }
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/** Assume that some arbitrary iterator is dereferenceable, because we
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can't prove that it isn't. */
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template<typename _Iterator>
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inline bool
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__check_dereferenceable(_Iterator&)
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{ return true; }
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/** Non-NULL pointers are dereferenceable. */
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template<typename _Tp>
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inline bool
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__check_dereferenceable(const _Tp* __ptr)
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{ return __ptr; }
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/** Safe iterators know if they are singular. */
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template<typename _Iterator, typename _Sequence>
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inline bool
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__check_dereferenceable(const _Safe_iterator<_Iterator, _Sequence>& __x)
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{ return __x._M_dereferenceable(); }
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/** If the distance between two random access iterators is
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* nonnegative, assume the range is valid.
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*/
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template<typename _RandomAccessIterator>
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inline bool
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__valid_range_aux2(const _RandomAccessIterator& __first,
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const _RandomAccessIterator& __last,
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std::random_access_iterator_tag)
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{ return __last - __first >= 0; }
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/** Can't test for a valid range with input iterators, because
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* iteration may be destructive. So we just assume that the range
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* is valid.
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*/
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template<typename _InputIterator>
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inline bool
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__valid_range_aux2(const _InputIterator&, const _InputIterator&,
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std::input_iterator_tag)
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{ return true; }
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/** We say that integral types for a valid range, and defer to other
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* routines to realize what to do with integral types instead of
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* iterators.
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*/
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template<typename _Integral>
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inline bool
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__valid_range_aux(const _Integral&, const _Integral&, std::__true_type)
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{ return true; }
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/** We have iterators, so figure out what kind of iterators that are
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* to see if we can check the range ahead of time.
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*/
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template<typename _InputIterator>
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inline bool
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__valid_range_aux(const _InputIterator& __first,
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const _InputIterator& __last, std::__false_type)
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{ return __valid_range_aux2(__first, __last,
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std::__iterator_category(__first)); }
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/** Don't know what these iterators are, or if they are even
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* iterators (we may get an integral type for InputIterator), so
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* see if they are integral and pass them on to the next phase
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* otherwise.
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*/
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template<typename _InputIterator>
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inline bool
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__valid_range(const _InputIterator& __first, const _InputIterator& __last)
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{
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typedef typename std::__is_integer<_InputIterator>::__type _Integral;
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return __valid_range_aux(__first, __last, _Integral());
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}
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/** Safe iterators know how to check if they form a valid range. */
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template<typename _Iterator, typename _Sequence>
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inline bool
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__valid_range(const _Safe_iterator<_Iterator, _Sequence>& __first,
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const _Safe_iterator<_Iterator, _Sequence>& __last)
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{ return __first._M_valid_range(__last); }
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/** Safe local iterators know how to check if they form a valid range. */
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template<typename _Iterator, typename _Sequence>
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inline bool
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__valid_range(const _Safe_local_iterator<_Iterator, _Sequence>& __first,
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const _Safe_local_iterator<_Iterator, _Sequence>& __last)
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{ return __first._M_valid_range(__last); }
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/* Checks that [first, last) is a valid range, and then returns
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* __first. This routine is useful when we can't use a separate
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* assertion statement because, e.g., we are in a constructor.
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*/
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template<typename _InputIterator>
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inline _InputIterator
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__check_valid_range(const _InputIterator& __first,
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const _InputIterator& __last
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__attribute__((__unused__)))
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{
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__glibcxx_check_valid_range(__first, __last);
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return __first;
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}
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/** Checks that __s is non-NULL or __n == 0, and then returns __s. */
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template<typename _CharT, typename _Integer>
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inline const _CharT*
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__check_string(const _CharT* __s,
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const _Integer& __n __attribute__((__unused__)))
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{
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#ifdef _GLIBCXX_DEBUG_PEDANTIC
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__glibcxx_assert(__s != 0 || __n == 0);
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#endif
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return __s;
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}
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/** Checks that __s is non-NULL and then returns __s. */
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template<typename _CharT>
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inline const _CharT*
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__check_string(const _CharT* __s)
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{
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#ifdef _GLIBCXX_DEBUG_PEDANTIC
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__glibcxx_assert(__s != 0);
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#endif
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return __s;
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}
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// Can't check if an input iterator sequence is sorted, because we
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// can't step through the sequence.
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template<typename _InputIterator>
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inline bool
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__check_sorted_aux(const _InputIterator&, const _InputIterator&,
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std::input_iterator_tag)
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{ return true; }
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// Can verify if a forward iterator sequence is in fact sorted using
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// std::__is_sorted
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template<typename _ForwardIterator>
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inline bool
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__check_sorted_aux(_ForwardIterator __first, _ForwardIterator __last,
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std::forward_iterator_tag)
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{
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if (__first == __last)
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return true;
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_ForwardIterator __next = __first;
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for (++__next; __next != __last; __first = __next, ++__next)
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if (*__next < *__first)
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return false;
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return true;
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}
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// For performance reason, as the iterator range has been validated, check on
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// random access safe iterators is done using the base iterator.
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template<typename _Iterator, typename _Sequence>
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inline bool
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__check_sorted_aux(const _Safe_iterator<_Iterator, _Sequence>& __first,
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const _Safe_iterator<_Iterator, _Sequence>& __last,
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std::random_access_iterator_tag __tag)
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{ return __check_sorted_aux(__first.base(), __last.base(), __tag); }
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// Can't check if an input iterator sequence is sorted, because we can't step
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// through the sequence.
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template<typename _InputIterator, typename _Predicate>
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inline bool
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__check_sorted_aux(const _InputIterator&, const _InputIterator&,
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_Predicate, std::input_iterator_tag)
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{ return true; }
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// Can verify if a forward iterator sequence is in fact sorted using
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// std::__is_sorted
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template<typename _ForwardIterator, typename _Predicate>
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inline bool
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__check_sorted_aux(_ForwardIterator __first, _ForwardIterator __last,
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_Predicate __pred, std::forward_iterator_tag)
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{
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if (__first == __last)
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return true;
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_ForwardIterator __next = __first;
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for (++__next; __next != __last; __first = __next, ++__next)
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if (__pred(*__next, *__first))
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return false;
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return true;
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}
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// For performance reason, as the iterator range has been validated, check on
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// random access safe iterators is done using the base iterator.
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template<typename _Iterator, typename _Sequence,
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typename _Predicate>
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inline bool
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__check_sorted_aux(const _Safe_iterator<_Iterator, _Sequence>& __first,
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const _Safe_iterator<_Iterator, _Sequence>& __last,
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_Predicate __pred,
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std::random_access_iterator_tag __tag)
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{ return __check_sorted_aux(__first.base(), __last.base(), __pred, __tag); }
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// Determine if a sequence is sorted.
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template<typename _InputIterator>
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inline bool
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__check_sorted(const _InputIterator& __first, const _InputIterator& __last)
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{
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// Verify that the < operator for elements in the sequence is a
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// StrictWeakOrdering by checking that it is irreflexive.
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__glibcxx_assert(__first == __last || !(*__first < *__first));
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return __check_sorted_aux(__first, __last,
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std::__iterator_category(__first));
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}
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template<typename _InputIterator, typename _Predicate>
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inline bool
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__check_sorted(const _InputIterator& __first, const _InputIterator& __last,
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_Predicate __pred)
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{
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// Verify that the predicate is StrictWeakOrdering by checking that it
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// is irreflexive.
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__glibcxx_assert(__first == __last || !__pred(*__first, *__first));
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return __check_sorted_aux(__first, __last, __pred,
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std::__iterator_category(__first));
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}
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template<typename _InputIterator>
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inline bool
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__check_sorted_set_aux(const _InputIterator& __first,
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const _InputIterator& __last,
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std::__true_type)
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{ return __check_sorted(__first, __last); }
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template<typename _InputIterator>
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inline bool
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__check_sorted_set_aux(const _InputIterator&,
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const _InputIterator&,
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std::__false_type)
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{ return true; }
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template<typename _InputIterator, typename _Predicate>
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inline bool
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__check_sorted_set_aux(const _InputIterator& __first,
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const _InputIterator& __last,
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_Predicate __pred, std::__true_type)
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{ return __check_sorted(__first, __last, __pred); }
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template<typename _InputIterator, typename _Predicate>
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inline bool
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__check_sorted_set_aux(const _InputIterator&,
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const _InputIterator&, _Predicate,
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std::__false_type)
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{ return true; }
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// ... special variant used in std::merge, std::includes, std::set_*.
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template<typename _InputIterator1, typename _InputIterator2>
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inline bool
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__check_sorted_set(const _InputIterator1& __first,
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const _InputIterator1& __last,
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const _InputIterator2&)
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{
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typedef typename std::iterator_traits<_InputIterator1>::value_type
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_ValueType1;
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typedef typename std::iterator_traits<_InputIterator2>::value_type
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_ValueType2;
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typedef typename std::__are_same<_ValueType1, _ValueType2>::__type
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_SameType;
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return __check_sorted_set_aux(__first, __last, _SameType());
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}
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332 |
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template<typename _InputIterator1, typename _InputIterator2,
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typename _Predicate>
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inline bool
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__check_sorted_set(const _InputIterator1& __first,
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const _InputIterator1& __last,
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const _InputIterator2&, _Predicate __pred)
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{
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typedef typename std::iterator_traits<_InputIterator1>::value_type
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_ValueType1;
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typedef typename std::iterator_traits<_InputIterator2>::value_type
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_ValueType2;
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typedef typename std::__are_same<_ValueType1, _ValueType2>::__type
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_SameType;
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return __check_sorted_set_aux(__first, __last, __pred, _SameType());
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}
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348 |
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349 |
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template<typename _ForwardIterator, typename _Tp>
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350 |
|
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inline bool
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351 |
|
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__check_partitioned_lower_aux(_ForwardIterator __first,
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352 |
|
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_ForwardIterator __last, const _Tp& __value,
|
353 |
|
|
std::forward_iterator_tag)
|
354 |
|
|
{
|
355 |
|
|
while (__first != __last && *__first < __value)
|
356 |
|
|
++__first;
|
357 |
|
|
if (__first != __last)
|
358 |
|
|
{
|
359 |
|
|
++__first;
|
360 |
|
|
while (__first != __last && !(*__first < __value))
|
361 |
|
|
++__first;
|
362 |
|
|
}
|
363 |
|
|
return __first == __last;
|
364 |
|
|
}
|
365 |
|
|
|
366 |
|
|
// For performance reason, as the iterator range has been validated, check on
|
367 |
|
|
// random access safe iterators is done using the base iterator.
|
368 |
|
|
template<typename _Iterator, typename _Sequence, typename _Tp>
|
369 |
|
|
inline bool
|
370 |
|
|
__check_partitioned_lower_aux(
|
371 |
|
|
const _Safe_iterator<_Iterator, _Sequence>& __first,
|
372 |
|
|
const _Safe_iterator<_Iterator, _Sequence>& __last,
|
373 |
|
|
const _Tp& __value,
|
374 |
|
|
std::random_access_iterator_tag __tag)
|
375 |
|
|
{
|
376 |
|
|
return __check_partitioned_lower_aux(__first.base(), __last.base(),
|
377 |
|
|
__value, __tag);
|
378 |
|
|
}
|
379 |
|
|
|
380 |
|
|
// _GLIBCXX_RESOLVE_LIB_DEFECTS
|
381 |
|
|
// 270. Binary search requirements overly strict
|
382 |
|
|
// Determine if a sequence is partitioned w.r.t. this element.
|
383 |
|
|
template<typename _ForwardIterator, typename _Tp>
|
384 |
|
|
inline bool
|
385 |
|
|
__check_partitioned_lower(_ForwardIterator __first,
|
386 |
|
|
_ForwardIterator __last, const _Tp& __value)
|
387 |
|
|
{
|
388 |
|
|
return __check_partitioned_lower_aux(__first, __last, __value,
|
389 |
|
|
std::__iterator_category(__first));
|
390 |
|
|
}
|
391 |
|
|
|
392 |
|
|
template<typename _ForwardIterator, typename _Tp>
|
393 |
|
|
inline bool
|
394 |
|
|
__check_partitioned_upper_aux(_ForwardIterator __first,
|
395 |
|
|
_ForwardIterator __last, const _Tp& __value,
|
396 |
|
|
std::forward_iterator_tag)
|
397 |
|
|
{
|
398 |
|
|
while (__first != __last && !(__value < *__first))
|
399 |
|
|
++__first;
|
400 |
|
|
if (__first != __last)
|
401 |
|
|
{
|
402 |
|
|
++__first;
|
403 |
|
|
while (__first != __last && __value < *__first)
|
404 |
|
|
++__first;
|
405 |
|
|
}
|
406 |
|
|
return __first == __last;
|
407 |
|
|
}
|
408 |
|
|
|
409 |
|
|
// For performance reason, as the iterator range has been validated, check on
|
410 |
|
|
// random access safe iterators is done using the base iterator.
|
411 |
|
|
template<typename _Iterator, typename _Sequence, typename _Tp>
|
412 |
|
|
inline bool
|
413 |
|
|
__check_partitioned_upper_aux(
|
414 |
|
|
const _Safe_iterator<_Iterator, _Sequence>& __first,
|
415 |
|
|
const _Safe_iterator<_Iterator, _Sequence>& __last,
|
416 |
|
|
const _Tp& __value,
|
417 |
|
|
std::random_access_iterator_tag __tag)
|
418 |
|
|
{
|
419 |
|
|
return __check_partitioned_upper_aux(__first.base(), __last.base(),
|
420 |
|
|
__value, __tag);
|
421 |
|
|
}
|
422 |
|
|
|
423 |
|
|
template<typename _ForwardIterator, typename _Tp>
|
424 |
|
|
inline bool
|
425 |
|
|
__check_partitioned_upper(_ForwardIterator __first,
|
426 |
|
|
_ForwardIterator __last, const _Tp& __value)
|
427 |
|
|
{
|
428 |
|
|
return __check_partitioned_upper_aux(__first, __last, __value,
|
429 |
|
|
std::__iterator_category(__first));
|
430 |
|
|
}
|
431 |
|
|
|
432 |
|
|
template<typename _ForwardIterator, typename _Tp, typename _Pred>
|
433 |
|
|
inline bool
|
434 |
|
|
__check_partitioned_lower_aux(_ForwardIterator __first,
|
435 |
|
|
_ForwardIterator __last, const _Tp& __value,
|
436 |
|
|
_Pred __pred,
|
437 |
|
|
std::forward_iterator_tag)
|
438 |
|
|
{
|
439 |
|
|
while (__first != __last && bool(__pred(*__first, __value)))
|
440 |
|
|
++__first;
|
441 |
|
|
if (__first != __last)
|
442 |
|
|
{
|
443 |
|
|
++__first;
|
444 |
|
|
while (__first != __last && !bool(__pred(*__first, __value)))
|
445 |
|
|
++__first;
|
446 |
|
|
}
|
447 |
|
|
return __first == __last;
|
448 |
|
|
}
|
449 |
|
|
|
450 |
|
|
// For performance reason, as the iterator range has been validated, check on
|
451 |
|
|
// random access safe iterators is done using the base iterator.
|
452 |
|
|
template<typename _Iterator, typename _Sequence,
|
453 |
|
|
typename _Tp, typename _Pred>
|
454 |
|
|
inline bool
|
455 |
|
|
__check_partitioned_lower_aux(
|
456 |
|
|
const _Safe_iterator<_Iterator, _Sequence>& __first,
|
457 |
|
|
const _Safe_iterator<_Iterator, _Sequence>& __last,
|
458 |
|
|
const _Tp& __value, _Pred __pred,
|
459 |
|
|
std::random_access_iterator_tag __tag)
|
460 |
|
|
{
|
461 |
|
|
return __check_partitioned_lower_aux(__first.base(), __last.base(),
|
462 |
|
|
__value, __pred, __tag);
|
463 |
|
|
}
|
464 |
|
|
|
465 |
|
|
// Determine if a sequence is partitioned w.r.t. this element.
|
466 |
|
|
template<typename _ForwardIterator, typename _Tp, typename _Pred>
|
467 |
|
|
inline bool
|
468 |
|
|
__check_partitioned_lower(_ForwardIterator __first,
|
469 |
|
|
_ForwardIterator __last, const _Tp& __value,
|
470 |
|
|
_Pred __pred)
|
471 |
|
|
{
|
472 |
|
|
return __check_partitioned_lower_aux(__first, __last, __value, __pred,
|
473 |
|
|
std::__iterator_category(__first));
|
474 |
|
|
}
|
475 |
|
|
|
476 |
|
|
template<typename _ForwardIterator, typename _Tp, typename _Pred>
|
477 |
|
|
inline bool
|
478 |
|
|
__check_partitioned_upper_aux(_ForwardIterator __first,
|
479 |
|
|
_ForwardIterator __last, const _Tp& __value,
|
480 |
|
|
_Pred __pred,
|
481 |
|
|
std::forward_iterator_tag)
|
482 |
|
|
{
|
483 |
|
|
while (__first != __last && !bool(__pred(__value, *__first)))
|
484 |
|
|
++__first;
|
485 |
|
|
if (__first != __last)
|
486 |
|
|
{
|
487 |
|
|
++__first;
|
488 |
|
|
while (__first != __last && bool(__pred(__value, *__first)))
|
489 |
|
|
++__first;
|
490 |
|
|
}
|
491 |
|
|
return __first == __last;
|
492 |
|
|
}
|
493 |
|
|
|
494 |
|
|
// For performance reason, as the iterator range has been validated, check on
|
495 |
|
|
// random access safe iterators is done using the base iterator.
|
496 |
|
|
template<typename _Iterator, typename _Sequence,
|
497 |
|
|
typename _Tp, typename _Pred>
|
498 |
|
|
inline bool
|
499 |
|
|
__check_partitioned_upper_aux(
|
500 |
|
|
const _Safe_iterator<_Iterator, _Sequence>& __first,
|
501 |
|
|
const _Safe_iterator<_Iterator, _Sequence>& __last,
|
502 |
|
|
const _Tp& __value, _Pred __pred,
|
503 |
|
|
std::random_access_iterator_tag __tag)
|
504 |
|
|
{
|
505 |
|
|
return __check_partitioned_upper_aux(__first.base(), __last.base(),
|
506 |
|
|
__value, __pred, __tag);
|
507 |
|
|
}
|
508 |
|
|
|
509 |
|
|
template<typename _ForwardIterator, typename _Tp, typename _Pred>
|
510 |
|
|
inline bool
|
511 |
|
|
__check_partitioned_upper(_ForwardIterator __first,
|
512 |
|
|
_ForwardIterator __last, const _Tp& __value,
|
513 |
|
|
_Pred __pred)
|
514 |
|
|
{
|
515 |
|
|
return __check_partitioned_upper_aux(__first, __last, __value, __pred,
|
516 |
|
|
std::__iterator_category(__first));
|
517 |
|
|
}
|
518 |
|
|
|
519 |
|
|
// Helper struct to detect random access safe iterators.
|
520 |
|
|
template<typename _Iterator>
|
521 |
|
|
struct __is_safe_random_iterator
|
522 |
|
|
{
|
523 |
|
|
enum { __value = 0 };
|
524 |
|
|
typedef std::__false_type __type;
|
525 |
|
|
};
|
526 |
|
|
|
527 |
|
|
template<typename _Iterator, typename _Sequence>
|
528 |
|
|
struct __is_safe_random_iterator<_Safe_iterator<_Iterator, _Sequence> >
|
529 |
|
|
: std::__are_same<std::random_access_iterator_tag,
|
530 |
|
|
typename std::iterator_traits<_Iterator>::
|
531 |
|
|
iterator_category>
|
532 |
|
|
{ };
|
533 |
|
|
|
534 |
|
|
template<typename _Iterator>
|
535 |
|
|
struct _Siter_base
|
536 |
|
|
: std::_Iter_base<_Iterator, __is_safe_random_iterator<_Iterator>::__value>
|
537 |
|
|
{ };
|
538 |
|
|
|
539 |
|
|
/** Helper function to extract base iterator of random access safe iterator
|
540 |
|
|
in order to reduce performance impact of debug mode. Limited to random
|
541 |
|
|
access iterator because it is the only category for which it is possible
|
542 |
|
|
to check for correct iterators order in the __valid_range function
|
543 |
|
|
thanks to the < operator.
|
544 |
|
|
*/
|
545 |
|
|
template<typename _Iterator>
|
546 |
|
|
inline typename _Siter_base<_Iterator>::iterator_type
|
547 |
|
|
__base(_Iterator __it)
|
548 |
|
|
{ return _Siter_base<_Iterator>::_S_base(__it); }
|
549 |
|
|
} // namespace __gnu_debug
|
550 |
|
|
|
551 |
|
|
#endif
|