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 struct for splay_tree_'s node. 39 */ 40 41 #ifndef PB_DS_SPLAY_TREE_NODE_HPP 42 #define PB_DS_SPLAY_TREE_NODE_HPP 43 44 namespace __gnu_pbds 45 { 46 namespace detail 47 { 48 template<typename Value_Type, class Metadata, class Allocator> 49 struct splay_tree_node_ 50 { 51 public: 52 typedef Value_Type value_type; 53 typedef Metadata metadata_type; 54 55 typedef 56 typename Allocator::template rebind< 57 splay_tree_node_<Value_Type, Metadata, Allocator> >::other::pointer 58 node_pointer; 59 60 typedef 61 typename Allocator::template rebind<metadata_type>::other::reference 62 metadata_reference; 63 64 typedef 65 typename Allocator::template rebind<metadata_type>::other::const_reference 66 const_metadata_reference; 67 68 #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_ 69 void 70 trace() const 71 { std::cout << PB_DS_V2F(m_value) << "(" << m_metadata << ")"; } 72 #endif 73 74 inline bool 75 special() const 76 { return m_special; } 77 78 inline const_metadata_reference 79 get_metadata() const 80 { return m_metadata; } 81 82 inline metadata_reference 83 get_metadata() 84 { return m_metadata; } 85 86 value_type m_value; 87 bool m_special; 88 node_pointer m_p_left; 89 node_pointer m_p_right; 90 node_pointer m_p_parent; 91 metadata_type m_metadata; 92 }; 93 94 template<typename Value_Type, typename Allocator> 95 struct splay_tree_node_<Value_Type, null_node_metadata, Allocator> 96 { 97 public: 98 typedef Value_Type value_type; 99 typedef null_node_metadata metadata_type; 100 101 typedef 102 typename Allocator::template rebind< 103 splay_tree_node_<Value_Type, null_node_metadata, Allocator> >::other::pointer 104 node_pointer; 105 106 inline bool 107 special() const 108 { return m_special; } 109 110 #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_ 111 void 112 trace() const 113 { std::cout << PB_DS_V2F(m_value); } 114 #endif 115 116 node_pointer m_p_left; 117 node_pointer m_p_right; 118 node_pointer m_p_parent; 119 value_type m_value; 120 bool m_special; 121 }; 122 } // namespace detail 123 } // namespace __gnu_pbds 124 125 #endif 126
