1 // -*- C++ -*- 2 3 // Copyright (C) 2005-2013 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 splay_tree_/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 /// Node for splay tree. 49 template<typename Value_Type, class Metadata, typename _Alloc> 50 struct splay_tree_node_ 51 { 52 public: 53 typedef Value_Type value_type; 54 typedef Metadata metadata_type; 55 56 typedef 57 typename _Alloc::template rebind< 58 splay_tree_node_<Value_Type, Metadata, _Alloc> >::other::pointer 59 node_pointer; 60 61 typedef 62 typename _Alloc::template rebind<metadata_type>::other::reference 63 metadata_reference; 64 65 typedef 66 typename _Alloc::template rebind<metadata_type>::other::const_reference 67 metadata_const_reference; 68 69 #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_ 70 void 71 trace() const 72 { std::cout << PB_DS_V2F(m_value) << "(" << m_metadata << ")"; } 73 #endif 74 75 inline bool 76 special() const 77 { return m_special; } 78 79 inline metadata_const_reference 80 get_metadata() const 81 { return m_metadata; } 82 83 inline metadata_reference 84 get_metadata() 85 { return m_metadata; } 86 87 value_type m_value; 88 bool m_special; 89 node_pointer m_p_left; 90 node_pointer m_p_right; 91 node_pointer m_p_parent; 92 metadata_type m_metadata; 93 }; 94 95 template<typename Value_Type, typename _Alloc> 96 struct splay_tree_node_<Value_Type, null_type, _Alloc> 97 { 98 public: 99 typedef Value_Type value_type; 100 typedef null_type metadata_type; 101 102 typedef 103 typename _Alloc::template rebind< 104 splay_tree_node_<Value_Type, null_type, _Alloc> >::other::pointer 105 node_pointer; 106 107 inline bool 108 special() const 109 { return m_special; } 110 111 #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_ 112 void 113 trace() const 114 { std::cout << PB_DS_V2F(m_value); } 115 #endif 116 117 node_pointer m_p_left; 118 node_pointer m_p_right; 119 node_pointer m_p_parent; 120 value_type m_value; 121 bool m_special; 122 }; 123 } // namespace detail 124 } // namespace __gnu_pbds 125 126 #endif 127
