108 lines
2.8 KiB
C++
108 lines
2.8 KiB
C++
// Debugging iterator implementation (out of line) -*- C++ -*-
|
|
|
|
// Copyright (C) 2011-2021 Free Software Foundation, Inc.
|
|
//
|
|
// This file is part of the GNU ISO C++ Library. This library is free
|
|
// software; you can redistribute it and/or modify it under the
|
|
// terms of the GNU General Public License as published by the
|
|
// Free Software Foundation; either version 3, or (at your option)
|
|
// any later version.
|
|
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU General Public License for more details.
|
|
|
|
// Under Section 7 of GPL version 3, you are granted additional
|
|
// permissions described in the GCC Runtime Library Exception, version
|
|
// 3.1, as published by the Free Software Foundation.
|
|
|
|
// You should have received a copy of the GNU General Public License and
|
|
// a copy of the GCC Runtime Library Exception along with this program;
|
|
// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
// <http://www.gnu.org/licenses/>.
|
|
|
|
/** @file debug/safe_local_iterator.tcc
|
|
* This file is a GNU debug extension to the Standard C++ Library.
|
|
*/
|
|
|
|
#ifndef _GLIBCXX_DEBUG_SAFE_LOCAL_ITERATOR_TCC
|
|
#define _GLIBCXX_DEBUG_SAFE_LOCAL_ITERATOR_TCC 1
|
|
|
|
namespace __gnu_debug
|
|
{
|
|
template<typename _Iterator, typename _Sequence>
|
|
typename _Distance_traits<_Iterator>::__type
|
|
_Safe_local_iterator<_Iterator, _Sequence>::
|
|
_M_get_distance_to(const _Safe_local_iterator& __rhs) const
|
|
{
|
|
if (base() == __rhs.base())
|
|
return { 0, __dp_exact };
|
|
|
|
if (_M_is_begin())
|
|
{
|
|
if (__rhs._M_is_end())
|
|
return
|
|
{
|
|
_M_get_sequence()->bucket_size(bucket()),
|
|
__dp_exact
|
|
};
|
|
|
|
return { 1, __dp_sign };
|
|
}
|
|
|
|
if (_M_is_end())
|
|
{
|
|
if (__rhs._M_is_begin())
|
|
return
|
|
{
|
|
-_M_get_sequence()->bucket_size(bucket()),
|
|
__dp_exact
|
|
};
|
|
|
|
return { -1, __dp_sign };
|
|
}
|
|
|
|
if (__rhs._M_is_begin())
|
|
return { -1, __dp_sign };
|
|
|
|
if (__rhs._M_is_end())
|
|
return { 1, __dp_sign };
|
|
|
|
return { 1, __dp_equality };
|
|
}
|
|
|
|
template<typename _Iterator, typename _Sequence>
|
|
bool
|
|
_Safe_local_iterator<_Iterator, _Sequence>::
|
|
_M_valid_range(const _Safe_local_iterator& __rhs,
|
|
std::pair<difference_type, _Distance_precision>& __dist) const
|
|
{
|
|
if (!_M_can_compare(__rhs))
|
|
return false;
|
|
|
|
if (bucket() != __rhs.bucket())
|
|
return false;
|
|
|
|
/* Determine if we can order the iterators without the help of
|
|
the container */
|
|
__dist = _M_get_distance_to(__rhs);
|
|
switch (__dist.second)
|
|
{
|
|
case __dp_equality:
|
|
if (__dist.first == 0)
|
|
return true;
|
|
break;
|
|
|
|
case __dp_sign:
|
|
case __dp_exact:
|
|
return __dist.first >= 0;
|
|
}
|
|
|
|
// Assume that this is a valid range; we can't check anything else
|
|
return true;
|
|
}
|
|
} // namespace __gnu_debug
|
|
|
|
#endif
|