bin_search_tree_/insert_fn_imps.hpp
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// -*- C++ -*-
// Copyright (C) 2005-2014 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_/insert_fn_imps.hpp
* Contains an implementation class for bin_search_tree_.
*/
PB_DS_CLASS_T_DEC
inline std::pair<typename PB_DS_CLASS_C_DEC::point_iterator, bool>
PB_DS_CLASS_C_DEC::
insert_leaf(const_reference r_value)
{
PB_DS_STRUCT_ONLY_ASSERT_VALID((*this))
if (m_size == 0)
return std::make_pair(insert_imp_empty(r_value),
true);
node_pointer p_nd = m_p_head->m_p_parent;
node_pointer p_pot = m_p_head;
while (p_nd != 0)
if (!Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value),
PB_DS_V2F(r_value)))
{
p_pot = p_nd;
p_nd = p_nd->m_p_left;
}
else
p_nd = p_nd->m_p_right;
if (p_pot == m_p_head)
return std::make_pair(insert_leaf_new(r_value, m_p_head->m_p_right, false),
true);
if (!Cmp_Fn::operator()(PB_DS_V2F(r_value),
PB_DS_V2F(p_pot->m_value)))
{
PB_DS_STRUCT_ONLY_ASSERT_VALID((*this))
PB_DS_CHECK_KEY_EXISTS(PB_DS_V2F(r_value))
return std::make_pair(p_pot, false);
}
PB_DS_CHECK_KEY_DOES_NOT_EXIST(PB_DS_V2F(r_value))
p_nd = p_pot->m_p_left;
if (p_nd == 0)
return std::make_pair(insert_leaf_new(r_value, p_pot, true),
true);
while (p_nd->m_p_right != 0)
p_nd = p_nd->m_p_right;
return std::make_pair(insert_leaf_new(r_value, p_nd, false),
true);
}
PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::iterator
PB_DS_CLASS_C_DEC::
insert_leaf_new(const_reference r_value, node_pointer p_nd, bool left_nd)
{
node_pointer p_new_nd =
get_new_node_for_leaf_insert(r_value,
traits_base::m_no_throw_copies_indicator);
if (left_nd)
{
_GLIBCXX_DEBUG_ASSERT(p_nd->m_p_left == 0);
_GLIBCXX_DEBUG_ASSERT(Cmp_Fn::operator()(PB_DS_V2F(r_value),
PB_DS_V2F(p_nd->m_value)));
p_nd->m_p_left = p_new_nd;
if (m_p_head->m_p_left == p_nd)
m_p_head->m_p_left = p_new_nd;
}
else
{
_GLIBCXX_DEBUG_ASSERT(p_nd->m_p_right == 0);
_GLIBCXX_DEBUG_ASSERT(Cmp_Fn::operator()(PB_DS_V2F(p_nd->m_value),
PB_DS_V2F(r_value)));
p_nd->m_p_right = p_new_nd;
if (m_p_head->m_p_right == p_nd)
m_p_head->m_p_right = p_new_nd;
}
p_new_nd->m_p_parent = p_nd;
p_new_nd->m_p_left = p_new_nd->m_p_right = 0;
PB_DS_ASSERT_NODE_CONSISTENT(p_nd)
update_to_top(p_new_nd, (node_update* )this);
_GLIBCXX_DEBUG_ONLY(debug_base::insert_new(PB_DS_V2F(r_value));)
return iterator(p_new_nd);
}
PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::iterator
PB_DS_CLASS_C_DEC::
insert_imp_empty(const_reference r_value)
{
node_pointer p_new_node =
get_new_node_for_leaf_insert(r_value, traits_base::m_no_throw_copies_indicator);
m_p_head->m_p_left = m_p_head->m_p_right =
m_p_head->m_p_parent = p_new_node;
p_new_node->m_p_parent = m_p_head;
p_new_node->m_p_left = p_new_node->m_p_right = 0;
_GLIBCXX_DEBUG_ONLY(debug_base::insert_new(PB_DS_V2F(r_value));)
update_to_top(m_p_head->m_p_parent, (node_update*)this);
return iterator(p_new_node);
}
PB_DS_CLASS_T_DEC
inline typename PB_DS_CLASS_C_DEC::node_pointer
PB_DS_CLASS_C_DEC::
get_new_node_for_leaf_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();
p_new_nd->m_p_left = p_new_nd->m_p_right = 0;
++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_leaf_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);
p_new_nd->m_p_left = p_new_nd->m_p_right = 0;
++m_size;
return p_new_nd;
}
std::pair
Struct holding two objects of arbitrary type.
Definition: stl_pair.h:96
std::true_type
integral_constant< bool, true > true_type
The type used as a compile-time boolean with true value.
Definition: type_traits:72
std::make_pair
constexpr pair< typename __decay_and_strip< _T1 >::__type, typename __decay_and_strip< _T2 >::__type > make_pair(_T1 &&__x, _T2 &&__y)
A convenience wrapper for creating a pair from two objects.
Definition: stl_pair.h:276
std::false_type
integral_constant< bool, false > false_type
The type used as a compile-time boolean with false value.
Definition: type_traits:75