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// -*- C++ -*-
// Copyright (C) 2005, 2006, 2009 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 node.hpp
* Contains an implementation for rb_tree_.
*/
#ifndef PB_DS_RB_TREE_NODE_HPP
#define PB_DS_RB_TREE_NODE_HPP
#include <ext/pb_ds/detail/basic_tree_policy/null_node_metadata.hpp>
namespace __gnu_pbds
{
namespace detail
{
template<typename Value_Type, class Metadata, class Allocator>
struct rb_tree_node_
{
public:
typedef Value_Type value_type;
typedef Metadata metadata_type;
typedef
typename Allocator::template rebind<
rb_tree_node_<
Value_Type,
Metadata,
Allocator> >::other::pointer
node_pointer;
typedef
typename Allocator::template rebind<
metadata_type>::other::reference
metadata_reference;
typedef
typename Allocator::template rebind<
metadata_type>::other::const_reference
const_metadata_reference;
inline bool
special() const
{ return m_red; }
inline const_metadata_reference
get_metadata() const
{ return m_metadata; }
inline metadata_reference
get_metadata()
{ return m_metadata; }
#ifdef PB_DS_BIN_SEARCH_TREE_TRACE_
void
trace() const
{
std::cout << PB_DS_V2F(m_value) <<(m_red? " <r> " : " <b> ")
<< "(" << m_metadata << ")";
}
#endif
node_pointer m_p_left;
node_pointer m_p_right;
node_pointer m_p_parent;
value_type m_value;
bool m_red;
metadata_type m_metadata;
};
template<typename Value_Type, class Allocator>
struct rb_tree_node_<Value_Type, null_node_metadata, Allocator>
{
public:
typedef Value_Type value_type;
typedef null_node_metadata metadata_type;
typedef
typename Allocator::template rebind<
rb_tree_node_<
Value_Type,
null_node_metadata,
Allocator> >::other::pointer
node_pointer;
inline bool
special() const
{ return m_red; }
#ifdef PB_DS_BIN_SEARCH_TREE_TRACE_
void
trace() const
{ std::cout << PB_DS_V2F(m_value) <<(m_red? " <r> " : " <b> "); }
#endif
node_pointer m_p_left;
node_pointer m_p_right;
node_pointer m_p_parent;
value_type m_value;
bool m_red;
};
} // namespace detail
} // namespace __gnu_pbds
#endif
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