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// -*- C++ -*-
// Copyright (C) 2005, 2006 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 2, 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.
// You should have received a copy of the GNU General Public License
// along with this library; see the file COPYING. If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
// MA 02111-1307, USA.
// As a special exception, you may use this file as part of a free
// software library without restriction. Specifically, if other files
// instantiate templates or use macros or inline functions from this
// file, or you compile this file and link it with other files to
// produce an executable, this file does not by itself cause the
// resulting executable to be covered by the GNU General Public
// License. This exception does not however invalidate any other
// reasons why the executable file might be covered by the GNU General
// Public License.
// 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 split_join_fn_imps.hpp
* Contains an implementation class for ov_tree_.
*/
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
split(const_key_reference r_key, PB_DS_CLASS_C_DEC& other)
{
_GLIBCXX_DEBUG_ONLY(assert_valid();)
_GLIBCXX_DEBUG_ONLY(other.assert_valid();)
if (m_size == 0)
{
other.clear();
_GLIBCXX_DEBUG_ONLY(assert_valid();)
_GLIBCXX_DEBUG_ONLY(other.assert_valid();)
return;
}
if (Cmp_Fn::operator()(r_key, PB_DS_V2F(*begin())))
{
value_swap(other);
_GLIBCXX_DEBUG_ONLY(assert_valid();)
_GLIBCXX_DEBUG_ONLY(other.assert_valid();)
return;
}
if (!Cmp_Fn::operator()(r_key, PB_DS_V2F(*(end() - 1))))
{
_GLIBCXX_DEBUG_ONLY(assert_valid();)
_GLIBCXX_DEBUG_ONLY(other.assert_valid();)
return;
}
if (m_size == 1)
{
value_swap(other);
_GLIBCXX_DEBUG_ONLY(assert_valid();)
_GLIBCXX_DEBUG_ONLY(other.assert_valid();)
return;
}
_GLIBCXX_DEBUG_ONLY(map_debug_base::join(other);)
iterator it = upper_bound(r_key);
PB_DS_CLASS_C_DEC new_other(other, other);
new_other.copy_from_ordered_range(it, end());
PB_DS_CLASS_C_DEC new_this(*this, * this);
new_this.copy_from_ordered_range(begin(), it);
// No exceptions from this point.
_GLIBCXX_DEBUG_ONLY(map_debug_base::split(r_key,(Cmp_Fn& )(*this), other);)
other.update(other.node_begin(), (node_update* )(&other));
update(node_begin(), (node_update* )this);
other.value_swap(new_other);
value_swap(new_this);
_GLIBCXX_DEBUG_ONLY(assert_valid();)
_GLIBCXX_DEBUG_ONLY(other.assert_valid();)
}
PB_DS_CLASS_T_DEC
void
PB_DS_CLASS_C_DEC::
join(PB_DS_CLASS_C_DEC& other)
{
_GLIBCXX_DEBUG_ONLY(assert_valid();)
_GLIBCXX_DEBUG_ONLY(other.assert_valid();)
if (other.m_size == 0)
return;
if (m_size == 0)
{
value_swap(other);
return;
}
const bool greater = Cmp_Fn::operator()(PB_DS_V2F(*(end() - 1)),
PB_DS_V2F(*other.begin()));
const bool lesser = Cmp_Fn::operator()(PB_DS_V2F(*(other.end() - 1)),
PB_DS_V2F(*begin()));
if (!greater && !lesser)
__throw_join_error();
PB_DS_CLASS_C_DEC new_this(*this, *this);
if (greater)
new_this.copy_from_ordered_range(begin(), end(),
other.begin(), other.end());
else
new_this.copy_from_ordered_range(other.begin(), other.end(),
begin(), end());
// No exceptions from this point.
_GLIBCXX_DEBUG_ONLY(map_debug_base::join(other);)
value_swap(new_this);
other.clear();
_GLIBCXX_DEBUG_ONLY(assert_valid();)
_GLIBCXX_DEBUG_ONLY(other.assert_valid();)
}
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