bin_search_tree_/constructors_destructor_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 bin_search_tree_/constructors_destructor_fn_imps.hpp
* Contains an implementation class for bin_search_tree_.
*/
PB_DS_CLASS_T_DEC
typename PB_DS_CLASS_C_DEC::node_allocator
PB_DS_CLASS_C_DEC::s_node_allocator;
PB_DS_CLASS_T_DEC
PB_DS_CLASS_C_DEC::
PB_DS_BIN_TREE_NAME() : m_p_head(s_node_allocator.allocate(1)), m_size(0)
{
initialize();
PB_DS_STRUCT_ONLY_ASSERT_VALID((*this))
}
PB_DS_CLASS_T_DEC
PB_DS_CLASS_C_DEC::
PB_DS_BIN_TREE_NAME(const Cmp_Fn& r_cmp_fn) :
Cmp_Fn(r_cmp_fn), m_p_head(s_node_allocator.allocate(1)), m_size(0)
{
initialize();
PB_DS_STRUCT_ONLY_ASSERT_VALID((*this))
}
PB_DS_CLASS_T_DEC
PB_DS_CLASS_C_DEC::
PB_DS_BIN_TREE_NAME(const Cmp_Fn& r_cmp_fn, const node_update& r_node_update) :
Cmp_Fn(r_cmp_fn),
node_update(r_node_update),
m_p_head(s_node_allocator.allocate(1)),
m_size(0)
{
initialize();
PB_DS_STRUCT_ONLY_ASSERT_VALID((*this))
}
PB_DS_CLASS_T_DEC
PB_DS_CLASS_C_DEC::
PB_DS_BIN_TREE_NAME(const PB_DS_CLASS_C_DEC& other) :
#ifdef _GLIBCXX_DEBUG
debug_base(other),
#endif
#ifdef PB_DS_TREE_TRACE
PB_DS_TREE_TRACE_BASE_C_DEC(other),
#endif
Cmp_Fn(other),
node_update(other),
m_p_head(s_node_allocator.allocate(1)),
m_size(0)
{
initialize();
m_size = other.m_size;
PB_DS_STRUCT_ONLY_ASSERT_VALID(other)
__try
{
m_p_head->m_p_parent = recursive_copy_node(other.m_p_head->m_p_parent);
if (m_p_head->m_p_parent != 0)
m_p_head->m_p_parent->m_p_parent = m_p_head;
m_size = other.m_size;
initialize_min_max();
}
__catch(...)
{
_GLIBCXX_DEBUG_ONLY(debug_base::clear();)
s_node_allocator.deallocate(m_p_head, 1);
__throw_exception_again;
}
PB_DS_STRUCT_ONLY_ASSERT_VALID((*this))
}
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
swap(PB_DS_CLASS_C_DEC& other)
{
PB_DS_STRUCT_ONLY_ASSERT_VALID((*this))
PB_DS_STRUCT_ONLY_ASSERT_VALID(other)
value_swap(other);
std::swap((Cmp_Fn& )(*this), (Cmp_Fn& )other);
PB_DS_STRUCT_ONLY_ASSERT_VALID((*this))
PB_DS_STRUCT_ONLY_ASSERT_VALID(other)
}
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
value_swap(PB_DS_CLASS_C_DEC& other)
{
_GLIBCXX_DEBUG_ONLY(debug_base::swap(other);)
std::swap(m_p_head, other.m_p_head);
std::swap(m_size, other.m_size);
}
PB_DS_CLASS_T_DEC
PB_DS_CLASS_C_DEC::
~PB_DS_BIN_TREE_NAME()
{
clear();
s_node_allocator.deallocate(m_p_head, 1);
}
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
initialize()
{
m_p_head->m_p_parent = 0;
m_p_head->m_p_left = m_p_head;
m_p_head->m_p_right = m_p_head;
m_size = 0;
}
PB_DS_CLASS_T_DEC
typename PB_DS_CLASS_C_DEC::node_pointer
PB_DS_CLASS_C_DEC::
recursive_copy_node(const node_pointer p_nd)
{
if (p_nd == 0)
return (0);
node_pointer p_ret = s_node_allocator.allocate(1);
__try
{
new (p_ret) node(*p_nd);
}
__catch(...)
{
s_node_allocator.deallocate(p_ret, 1);
__throw_exception_again;
}
p_ret->m_p_left = p_ret->m_p_right = 0;
__try
{
p_ret->m_p_left = recursive_copy_node(p_nd->m_p_left);
p_ret->m_p_right = recursive_copy_node(p_nd->m_p_right);
}
__catch(...)
{
clear_imp(p_ret);
__throw_exception_again;
}
if (p_ret->m_p_left != 0)
p_ret->m_p_left->m_p_parent = p_ret;
if (p_ret->m_p_right != 0)
p_ret->m_p_right->m_p_parent = p_ret;
PB_DS_ASSERT_NODE_CONSISTENT(p_ret)
return p_ret;
}
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
initialize_min_max()
{
if (m_p_head->m_p_parent == 0)
{
m_p_head->m_p_left = m_p_head->m_p_right = m_p_head;
return;
}
{
node_pointer p_min = m_p_head->m_p_parent;
while (p_min->m_p_left != 0)
p_min = p_min->m_p_left;
m_p_head->m_p_left = p_min;
}
{
node_pointer p_max = m_p_head->m_p_parent;
while (p_max->m_p_right != 0)
p_max = p_max->m_p_right;
m_p_head->m_p_right = p_max;
}
}