bin_search_tree_/split_join_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_/split_join_fn_imps.hpp
* Contains an implementation class for bin_search_tree_.
*/
PB_DS_CLASS_T_DEC
bool
PB_DS_CLASS_C_DEC::
join_prep(PB_DS_CLASS_C_DEC& other)
{
PB_DS_ASSERT_VALID((*this))
PB_DS_ASSERT_VALID(other)
if (other.m_size == 0)
return false;
if (m_size == 0)
{
value_swap(other);
return false;
}
const bool greater =
Cmp_Fn::operator()(PB_DS_V2F(m_p_head->m_p_right->m_value),
PB_DS_V2F(other.m_p_head->m_p_left->m_value));
const bool lesser =
Cmp_Fn::operator()(PB_DS_V2F(other.m_p_head->m_p_right->m_value),
PB_DS_V2F(m_p_head->m_p_left->m_value));
if (!greater && !lesser)
__throw_join_error();
if (lesser)
value_swap(other);
m_size += other.m_size;
_GLIBCXX_DEBUG_ONLY(debug_base::join(other);)
return true;
}
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
join_finish(PB_DS_CLASS_C_DEC& other)
{
initialize_min_max();
other.initialize();
}
PB_DS_CLASS_T_DEC
bool
PB_DS_CLASS_C_DEC::
split_prep(key_const_reference r_key, PB_DS_CLASS_C_DEC& other)
{
PB_DS_ASSERT_VALID((*this))
PB_DS_ASSERT_VALID(other)
other.clear();
if (m_size == 0)
{
PB_DS_ASSERT_VALID((*this))
PB_DS_ASSERT_VALID(other)
return false;
}
if (Cmp_Fn::operator()(r_key, PB_DS_V2F(m_p_head->m_p_left->m_value)))
{
value_swap(other);
PB_DS_ASSERT_VALID((*this))
PB_DS_ASSERT_VALID(other)
return false;
}
if (!Cmp_Fn::operator()(r_key, PB_DS_V2F(m_p_head->m_p_right->m_value)))
{
PB_DS_ASSERT_VALID((*this))
PB_DS_ASSERT_VALID(other)
return false;
}
if (m_size == 1)
{
value_swap(other);
PB_DS_ASSERT_VALID((*this))
PB_DS_ASSERT_VALID(other)
return false;
}
_GLIBCXX_DEBUG_ONLY(debug_base::split(r_key,(Cmp_Fn& )(*this), other);)
return true;
}
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
split_finish(PB_DS_CLASS_C_DEC& other)
{
other.initialize_min_max();
other.m_size = std::distance(other.begin(), other.end());
m_size -= other.m_size;
initialize_min_max();
PB_DS_ASSERT_VALID((*this))
PB_DS_ASSERT_VALID(other)
}
PB_DS_CLASS_T_DEC
typename PB_DS_CLASS_C_DEC::size_type
PB_DS_CLASS_C_DEC::
recursive_count(node_pointer p) const
{
if (p == 0)
return 0;
return 1 + recursive_count(p->m_p_left) + recursive_count(p->m_p_right);
}