left_child_next_sibling_heap_/insert_fn_imps.hpp
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// -*- C++ -*-
// Copyright (C) 2005-2013 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/>.
// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
// Permission to use, copy, modify, sell, and distribute this software
// is hereby granted without fee, provided that the above copyright
// notice appears in all copies, and that both that copyright notice
// and this permission notice appear in supporting documentation. None
// of the above authors, nor IBM Haifa Research Laboratories, make any
// representation about the suitability of this software for any
// purpose. It is provided "as is" without express or implied
// warranty.
/**
* @file left_child_next_sibling_heap_/insert_fn_imps.hpp
* Contains an implementation class for left_child_next_sibling_heap_.
*/
PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::node_pointer
PB_DS_CLASS_C_DEC::
get_new_node_for_insert(const_reference r_val)
{
return get_new_node_for_insert(r_val, s_no_throw_copies_ind);
}
PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::node_pointer
PB_DS_CLASS_C_DEC::
get_new_node_for_insert(const_reference r_val, false_type)
{
node_pointer p_new_nd = s_node_allocator.allocate(1);
cond_dealtor_t cond(p_new_nd);
new (const_cast<void* >(
static_cast<const void* >(&p_new_nd->m_value)))
typename node::value_type(r_val);
cond.set_no_action();
++m_size;
return (p_new_nd);
}
PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::node_pointer
PB_DS_CLASS_C_DEC::
get_new_node_for_insert(const_reference r_val, true_type)
{
node_pointer p_new_nd = s_node_allocator.allocate(1);
new (const_cast<void* >(
static_cast<const void* >(&p_new_nd->m_value)))
typename node::value_type(r_val);
++m_size;
return (p_new_nd);
}
PB_DS_CLASS_T_DEC
inline void
PB_DS_CLASS_C_DEC::
make_child_of(node_pointer p_nd, node_pointer p_new_parent)
{
_GLIBCXX_DEBUG_ASSERT(p_nd != 0);
_GLIBCXX_DEBUG_ASSERT(p_new_parent != 0);
p_nd->m_p_next_sibling = p_new_parent->m_p_l_child;
if (p_new_parent->m_p_l_child != 0)
p_new_parent->m_p_l_child->m_p_prev_or_parent = p_nd;
p_nd->m_p_prev_or_parent = p_new_parent;
p_new_parent->m_p_l_child = p_nd;
}
PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::node_pointer
PB_DS_CLASS_C_DEC::
parent(node_pointer p_nd)
{
while (true)
{
node_pointer p_pot = p_nd->m_p_prev_or_parent;
if (p_pot == 0 || p_pot->m_p_l_child == p_nd)
return p_pot;
p_nd = p_pot;
}
}
PB_DS_CLASS_T_DEC
inline void
PB_DS_CLASS_C_DEC::
swap_with_parent(node_pointer p_nd, node_pointer p_parent)
{
if (p_parent == m_p_root)
m_p_root = p_nd;
_GLIBCXX_DEBUG_ASSERT(p_nd != 0);
_GLIBCXX_DEBUG_ASSERT(p_parent != 0);
_GLIBCXX_DEBUG_ASSERT(parent(p_nd) == p_parent);
const bool nd_direct_child = p_parent->m_p_l_child == p_nd;
const bool parent_root = p_parent->m_p_prev_or_parent == 0;
const bool parent_direct_child =
!parent_root&& p_parent->m_p_prev_or_parent->m_p_l_child == p_parent;
std::swap(p_parent->m_p_prev_or_parent, p_nd->m_p_prev_or_parent);
std::swap(p_parent->m_p_next_sibling, p_nd->m_p_next_sibling);
std::swap(p_parent->m_p_l_child, p_nd->m_p_l_child);
std::swap(p_parent->m_metadata, p_nd->m_metadata);
_GLIBCXX_DEBUG_ASSERT(p_nd->m_p_l_child != 0);
_GLIBCXX_DEBUG_ASSERT(p_parent->m_p_prev_or_parent != 0);
if (p_nd->m_p_next_sibling != 0)
p_nd->m_p_next_sibling->m_p_prev_or_parent = p_nd;
if (p_parent->m_p_next_sibling != 0)
p_parent->m_p_next_sibling->m_p_prev_or_parent = p_parent;
if (p_parent->m_p_l_child != 0)
p_parent->m_p_l_child->m_p_prev_or_parent = p_parent;
if (parent_direct_child)
p_nd->m_p_prev_or_parent->m_p_l_child = p_nd;
else if (!parent_root)
p_nd->m_p_prev_or_parent->m_p_next_sibling = p_nd;
if (!nd_direct_child)
{
p_nd->m_p_l_child->m_p_prev_or_parent = p_nd;
p_parent->m_p_prev_or_parent->m_p_next_sibling = p_parent;
}
else
{
_GLIBCXX_DEBUG_ASSERT(p_nd->m_p_l_child == p_nd);
_GLIBCXX_DEBUG_ASSERT(p_parent->m_p_prev_or_parent == p_parent);
p_nd->m_p_l_child = p_parent;
p_parent->m_p_prev_or_parent = p_nd;
}
_GLIBCXX_DEBUG_ASSERT(parent(p_parent) == p_nd);
}