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 for rb_tree_. 45 */ 46 47 #ifndef PB_DS_RB_TREE_NODE_HPP 48 #define PB_DS_RB_TREE_NODE_HPP 49 50 #include <ext/pb_ds/detail/basic_tree_policy/null_node_metadata.hpp> 51 52 namespace pb_ds 53 { 54 namespace detail 55 { 56 template<typename Value_Type, class Metadata, class Allocator> 57 struct rb_tree_node_ 58 { 59 public: 60 typedef Value_Type value_type; 61 typedef Metadata metadata_type; 62 63 typedef 64 typename Allocator::template rebind< 65 rb_tree_node_< 66 Value_Type, 67 Metadata, 68 Allocator> >::other::pointer 69 node_pointer; 70 71 typedef 72 typename Allocator::template rebind< 73 metadata_type>::other::reference 74 metadata_reference; 75 76 typedef 77 typename Allocator::template rebind< 78 metadata_type>::other::const_reference 79 const_metadata_reference; 80 81 inline bool specialpb_ds::detail::rb_tree_node_82 special() const 83 { return m_red; } 84 85 inline const_metadata_reference get_metadatapb_ds::detail::rb_tree_node_86 get_metadata() const 87 { return m_metadata; } 88 89 inline metadata_reference get_metadatapb_ds::detail::rb_tree_node_90 get_metadata() 91 { return m_metadata; } 92 93 #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_ 94 void tracepb_ds::detail::rb_tree_node_95 trace() const 96 { 97 std::cout << PB_DS_V2F(m_value) <<(m_red? " <r> " : " <b> ") 98 << "(" << m_metadata << ")"; 99 } 100 #endif 101 102 node_pointer m_p_left; 103 node_pointer m_p_right; 104 node_pointer m_p_parent; 105 value_type m_value; 106 bool m_red; 107 metadata_type m_metadata; 108 }; 109 110 template<typename Value_Type, class Allocator> 111 struct rb_tree_node_<Value_Type, null_node_metadata, Allocator> 112 { 113 public: 114 typedef Value_Type value_type; 115 typedef null_node_metadata metadata_type; 116 117 typedef 118 typename Allocator::template rebind< 119 rb_tree_node_< 120 Value_Type, 121 null_node_metadata, 122 Allocator> >::other::pointer 123 node_pointer; 124 125 inline bool specialpb_ds::detail::rb_tree_node_126 special() const 127 { return m_red; } 128 129 #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_ 130 void tracepb_ds::detail::rb_tree_node_131 trace() const 132 { std::cout << PB_DS_V2F(m_value) <<(m_red? " <r> " : " <b> "); } 133 #endif 134 135 node_pointer m_p_left; 136 node_pointer m_p_right; 137 node_pointer m_p_parent; 138 value_type m_value; 139 bool m_red; 140 }; 141 } // namespace detail 142 } // namespace pb_ds 143 144 #endif 145