text: // -*- 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 node.hpp
   * Contains an implementation struct for splay_tree_'s node.
   */
  
  #ifndef PB_DS_SPLAY_TREE_NODE_HPP
  #define PB_DS_SPLAY_TREE_NODE_HPP
  
  namespace pb_ds
  {
    namespace detail
    {
      template<typename Value_Type, class Metadata, class Allocator>
      struct splay_tree_node_
      {
      public:
        typedef Value_Type value_type;
        typedef Metadata metadata_type;
  
        typedef
        typename Allocator::template rebind<
        splay_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;
  
  #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_
        void
        trace() const
        { std::cout << PB_DS_V2F(m_value) << "(" << m_metadata << ")"; }
  #endif
  
        inline bool
        special() const
        { return m_special; }
  
        inline const_metadata_reference
        get_metadata() const
        { return m_metadata; }
  
        inline metadata_reference
        get_metadata()
        { return m_metadata; }
  
        value_type m_value;
        bool m_special;
        node_pointer m_p_left;
        node_pointer m_p_right;
        node_pointer m_p_parent;
        metadata_type m_metadata;
      };
  
      template<typename Value_Type, typename Allocator>
      struct splay_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<
        splay_tree_node_<Value_Type, null_node_metadata, Allocator> >::other::pointer
        node_pointer;
  
        inline bool
        special() const
        { return m_special; }
  
  #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_
        void
        trace() const
        { std::cout << PB_DS_V2F(m_value); }
  #endif 
  
        node_pointer m_p_left;
        node_pointer m_p_right;
        node_pointer m_p_parent;
        value_type m_value;
        bool m_special;
      };
    } // namespace detail
  } // namespace pb_ds
  
  #endif 
  