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// -*- C++ -*-
// Copyright (C) 2005 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, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
// 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_ASSOC_CLASS_T_DEC
void
PB_ASSOC_CLASS_C_DEC::
split(const_key_reference r_key, PB_ASSOC_CLASS_C_DEC& r_other)
{
PB_ASSOC_DBG_ONLY(assert_valid();)
PB_ASSOC_DBG_ONLY(r_other.assert_valid();)
if (m_size == 0)
{
r_other.clear();
PB_ASSOC_DBG_ONLY(assert_valid();)
PB_ASSOC_DBG_ONLY(r_other.assert_valid();)
return;
}
if (Cmp_Fn::operator()(r_key, PB_ASSOC_V2F(*begin())))
{
swap(r_other);
PB_ASSOC_DBG_ONLY(assert_valid();)
PB_ASSOC_DBG_ONLY(r_other.assert_valid();)
return;
}
if (!Cmp_Fn::operator()(
r_key,
PB_ASSOC_V2F(*(end() - 1))))
{
PB_ASSOC_DBG_ONLY(assert_valid();)
PB_ASSOC_DBG_ONLY(r_other.assert_valid();)
return;
}
if (m_size == 1)
{
swap(r_other);
PB_ASSOC_DBG_ONLY(assert_valid();)
PB_ASSOC_DBG_ONLY(r_other.assert_valid();)
return;
}
#ifdef PB_ASSOC_BIN_SEARCH_TREE_DEBUG_
for (const_iterator it = begin(); it != end(); ++it)
if (Cmp_Fn::operator()(
r_key,
PB_ASSOC_V2F(*it)))
{
my_map_debug_base::erase_existing(PB_ASSOC_V2F(*it));
r_other.my_map_debug_base::insert_new(PB_ASSOC_V2F(*it));
}
#endif // PB_ASSOC_BIN_SEARCH_TREE_DEBUG_
iterator it = upper_bound(r_key);
PB_ASSOC_CLASS_C_DEC new_other(r_other, r_other);
new_other.copy_from_ordered_range(it, end());
PB_ASSOC_CLASS_C_DEC new_this(*this, * this);
new_this.copy_from_ordered_range(begin(), it);
// No exceptions from this point.
r_other.update(r_other.node_begin(), (Node_Updator* )(&r_other));
update(node_begin(), (Node_Updator* )this);
r_other.swap(new_other);
swap(new_this);
PB_ASSOC_DBG_ONLY(assert_valid();)
PB_ASSOC_DBG_ONLY(r_other.assert_valid();)
}
PB_ASSOC_CLASS_T_DEC
void
PB_ASSOC_CLASS_C_DEC::
join(PB_ASSOC_CLASS_C_DEC& r_other)
{
PB_ASSOC_DBG_ONLY(assert_valid();)
PB_ASSOC_DBG_ONLY(r_other.assert_valid();)
if (r_other.m_size == 0)
return;
if (m_size == 0)
{
swap(r_other);
return;
}
const bool greater = Cmp_Fn::operator()(
PB_ASSOC_V2F(*(end() - 1)),
PB_ASSOC_V2F(*r_other.begin()));
const bool lesser = Cmp_Fn::operator()(
PB_ASSOC_V2F(*(r_other.end() - 1)),
PB_ASSOC_V2F(*begin()));
if (!greater&& !lesser)
throw cannot_join();
#ifdef PB_ASSOC_BIN_SEARCH_TREE_DEBUG_
for (const_iterator other_it = r_other.begin(); other_it != r_other.end();
++other_it)
{
my_map_debug_base::insert_new(PB_ASSOC_V2F(*other_it));
r_other.my_map_debug_base::erase_existing(PB_ASSOC_V2F(*other_it));
}
#endif // PB_ASSOC_BIN_SEARCH_TREE_DEBUG_
PB_ASSOC_CLASS_C_DEC new_this(*this, * this);
if (greater)
new_this.copy_from_ordered_range(
begin(),
end(),
r_other.begin(),
r_other.end());
else
new_this.copy_from_ordered_range(
r_other.begin(),
r_other.end(),
begin(),
end());
// No exceptions from this point.
swap(new_this);
r_other.clear();
PB_ASSOC_DBG_ONLY(assert_valid();)
PB_ASSOC_DBG_ONLY(r_other.assert_valid();)
}
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