mingw/lib/gcc/mingw32/4.3.3/include/c++/ext/pb_ds/detail/splay_tree_/node.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005, 2006 Free Software Foundation, Inc.
   4 //
   5 // This file is part of the GNU ISO C++ Library.  This library is free
   6 // software; you can redistribute it and/or modify it under the terms
   7 // of the GNU General Public License as published by the Free Software
   8 // Foundation; either version 2, or (at your option) any later
   9 // version.
  10
  11 // This library is distributed in the hope that it will be useful, but
  12 // WITHOUT ANY WARRANTY; without even the implied warranty of
  13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 // General Public License for more details.
  15
  16 // You should have received a copy of the GNU General Public License
  17 // along with this library; see the file COPYING.  If not, write to
  18 // the Free Software Foundation, 59 Temple Place - Suite 330, Boston,
  19 // MA 02111-1307, USA.
  20
  21 // As a special exception, you may use this file as part of a free
  22 // software library without restriction.  Specifically, if other files
  23 // instantiate templates or use macros or inline functions from this
  24 // file, or you compile this file and link it with other files to
  25 // produce an executable, this file does not by itself cause the
  26 // resulting executable to be covered by the GNU General Public
  27 // License.  This exception does not however invalidate any other
  28 // reasons why the executable file might be covered by the GNU General
  29 // Public License.
  30
  31 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
  32
  33 // Permission to use, copy, modify, sell, and distribute this software
  34 // is hereby granted without fee, provided that the above copyright
  35 // notice appears in all copies, and that both that copyright notice
  36 // and this permission notice appear in supporting documentation. None
  37 // of the above authors, nor IBM Haifa Research Laboratories, make any
  38 // representation about the suitability of this software for any
  39 // purpose. It is provided "as is" without express or implied
  40 // warranty.
  41
  42 /**
  43  * @file node.hpp
  44  * Contains an implementation struct for splay_tree_'s node.
  45  */
  46
  47 #ifndef PB_DS_SPLAY_TREE_NODE_HPP
  48 #define PB_DS_SPLAY_TREE_NODE_HPP
  49
  50 namespace __gnu_pbds
  51 {
  52   namespace detail
  53   {
  54     template<typename Value_Type, class Metadata, class Allocator>
  55     struct splay_tree_node_
  56     {
  57     public:
  58       typedef Value_Type value_type;
  59       typedef Metadata metadata_type;
  60
  61       typedef
  62       typename Allocator::template rebind<
  63       splay_tree_node_<Value_Type, Metadata, Allocator> >::other::pointer
  64       node_pointer;
  65
  66       typedef
  67       typename Allocator::template rebind<metadata_type>::other::reference
  68       metadata_reference;
  69
  70       typedef
  71       typename Allocator::template rebind<metadata_type>::other::const_reference
  72       const_metadata_reference;
  73
  74 #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_
  75       void
  76       trace() const
  77       { std::cout << PB_DS_V2F(m_value) << "(" << m_metadata << ")"; }
  78 #endif
  79
  80       inline bool
  81       special() const
  82       { return m_special; }
  83
  84       inline const_metadata_reference
  85       get_metadata() const
  86       { return m_metadata; }
  87
  88       inline metadata_reference
  89       get_metadata()
  90       { return m_metadata; }
  91
  92       value_type m_value;
  93       bool m_special;
  94       node_pointer m_p_left;
  95       node_pointer m_p_right;
  96       node_pointer m_p_parent;
  97       metadata_type m_metadata;
  98     };
  99
 100     template<typename Value_Type, typename Allocator>
 101     struct splay_tree_node_<Value_Type, null_node_metadata, Allocator>
 102     {
 103     public:
 104       typedef Value_Type value_type;
 105       typedef null_node_metadata metadata_type;
 106
 107       typedef
 108       typename Allocator::template rebind<
 109       splay_tree_node_<Value_Type, null_node_metadata, Allocator> >::other::pointer
 110       node_pointer;
 111
 112       inline bool
 113       special() const
 114       { return m_special; }
 115
 116 #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_
 117       void
 118       trace() const
 119       { std::cout << PB_DS_V2F(m_value); }
 120 #endif
 121
 122       node_pointer m_p_left;
 123       node_pointer m_p_right;
 124       node_pointer m_p_parent;
 125       value_type m_value;
 126       bool m_special;
 127     };
 128   } // namespace detail
 129 } // namespace __gnu_pbds
 130
 131 #endif