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// Compatibility symbols for previous versions, list bits -*- C++ -*-
// Copyright (C) 2011 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/>.
#include <bits/move.h>
#ifndef _GLIBCXX_BEGIN_NAMESPACE_COMPAT
# define _GLIBCXX_BEGIN_NAMESPACE_COMPAT
#endif
#ifndef _GLIBCXX_END_NAMESPACE_COMPAT
# define _GLIBCXX_END_NAMESPACE_COMPAT
#endif
namespace std _GLIBCXX_VISIBILITY(default)
{
_GLIBCXX_BEGIN_NAMESPACE_COMPAT
struct _List_node_base
{
_List_node_base* _M_next;
_List_node_base* _M_prev;
void
_M_transfer(_List_node_base * const __first,
_List_node_base * const __last) _GLIBCXX_USE_NOEXCEPT;
void
_M_reverse() _GLIBCXX_USE_NOEXCEPT;
void
_M_hook(_List_node_base * const __position) _GLIBCXX_USE_NOEXCEPT;
void
_M_unhook() _GLIBCXX_USE_NOEXCEPT;
};
void
_List_node_base::
_M_transfer(_List_node_base * const __first,
_List_node_base * const __last) _GLIBCXX_USE_NOEXCEPT
{
if (this != __last)
{
// Remove [first, last) from its old position.
__last->_M_prev->_M_next = this;
__first->_M_prev->_M_next = __last;
this->_M_prev->_M_next = __first;
// Splice [first, last) into its new position.
_List_node_base* const __tmp = this->_M_prev;
this->_M_prev = __last->_M_prev;
__last->_M_prev = __first->_M_prev;
__first->_M_prev = __tmp;
}
}
void
_List_node_base::_M_reverse() _GLIBCXX_USE_NOEXCEPT
{
_List_node_base* __tmp = this;
do
{
std::swap(__tmp->_M_next, __tmp->_M_prev);
// Old next node is now prev.
__tmp = __tmp->_M_prev;
}
while (__tmp != this);
}
void
_List_node_base::
_M_hook(_List_node_base* const __position) _GLIBCXX_USE_NOEXCEPT
{
this->_M_next = __position;
this->_M_prev = __position->_M_prev;
__position->_M_prev->_M_next = this;
__position->_M_prev = this;
}
void
_List_node_base::_M_unhook() _GLIBCXX_USE_NOEXCEPT
{
_List_node_base* const __next_node = this->_M_next;
_List_node_base* const __prev_node = this->_M_prev;
__prev_node->_M_next = __next_node;
__next_node->_M_prev = __prev_node;
}
_GLIBCXX_END_NAMESPACE_COMPAT
} // namespace std
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