1// -*- C++ -*- 2 3// Copyright (C) 2005, 2006, 2009 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 3, 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// Under Section 7 of GPL version 3, you are granted additional 17// permissions described in the GCC Runtime Library Exception, version 18// 3.1, as published by the Free Software Foundation. 19 20// You should have received a copy of the GNU General Public License and 21// a copy of the GCC Runtime Library Exception along with this program; 22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23// <http://www.gnu.org/licenses/>. 24 25// Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. 26 27// Permission to use, copy, modify, sell, and distribute this software 28// is hereby granted without fee, provided that the above copyright 29// notice appears in all copies, and that both that copyright notice 30// and this permission notice appear in supporting documentation. None 31// of the above authors, nor IBM Haifa Research Laboratories, make any 32// representation about the suitability of this software for any 33// purpose. It is provided "as is" without express or implied 34// warranty. 35 36/** 37 * @file node.hpp 38 * Contains an implementation for rb_tree_. 39 */ 40 41#ifndef PB_DS_RB_TREE_NODE_HPP 42#define PB_DS_RB_TREE_NODE_HPP 43 44#include <ext/pb_ds/detail/basic_tree_policy/null_node_metadata.hpp> 45 46namespace __gnu_pbds 47{ 48 namespace detail 49 { 50 template<typename Value_Type, class Metadata, class Allocator> 51 struct rb_tree_node_ 52 { 53 public: 54 typedef Value_Type value_type; 55 typedef Metadata metadata_type; 56 57 typedef 58 typename Allocator::template rebind< 59 rb_tree_node_< 60 Value_Type, 61 Metadata, 62 Allocator> >::other::pointer 63 node_pointer; 64 65 typedef 66 typename Allocator::template rebind< 67 metadata_type>::other::reference 68 metadata_reference; 69 70 typedef 71 typename Allocator::template rebind< 72 metadata_type>::other::const_reference 73 const_metadata_reference; 74 75 inline bool 76 special() const 77 { return m_red; } 78 79 inline const_metadata_reference 80 get_metadata() const 81 { return m_metadata; } 82 83 inline metadata_reference 84 get_metadata() 85 { return m_metadata; } 86 87#ifdef PB_DS_BIN_SEARCH_TREE_TRACE_ 88 void 89 trace() const 90 { 91 std::cout << PB_DS_V2F(m_value) <<(m_red? " <r> " : " <b> ") 92 << "(" << m_metadata << ")"; 93 } 94#endif 95 96 node_pointer m_p_left; 97 node_pointer m_p_right; 98 node_pointer m_p_parent; 99 value_type m_value; 100 bool m_red; 101 metadata_type m_metadata; 102 }; 103 104 template<typename Value_Type, class Allocator> 105 struct rb_tree_node_<Value_Type, null_node_metadata, Allocator> 106 { 107 public: 108 typedef Value_Type value_type; 109 typedef null_node_metadata metadata_type; 110 111 typedef 112 typename Allocator::template rebind< 113 rb_tree_node_< 114 Value_Type, 115 null_node_metadata, 116 Allocator> >::other::pointer 117 node_pointer; 118 119 inline bool 120 special() const 121 { return m_red; } 122 123#ifdef PB_DS_BIN_SEARCH_TREE_TRACE_ 124 void 125 trace() const 126 { std::cout << PB_DS_V2F(m_value) <<(m_red? " <r> " : " <b> "); } 127#endif 128 129 node_pointer m_p_left; 130 node_pointer m_p_right; 131 node_pointer m_p_parent; 132 value_type m_value; 133 bool m_red; 134 }; 135 } // namespace detail 136} // namespace __gnu_pbds 137 138#endif 139