1 // -*- C++ -*- 2 3 // Copyright (C) 2005-2021 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 typename rebind_traits<_Alloc, splay_tree_node_>::pointer 57 node_pointer; 58 59 typedef typename rebind_traits<_Alloc, metadata_type>::reference 60 metadata_reference; 61 62 typedef typename rebind_traits<_Alloc, metadata_type>::const_reference 63 metadata_const_reference; 64 65 #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_ 66 void trace__gnu_pbds::detail::splay_tree_node_67 trace() const 68 { std::cout << PB_DS_V2F(m_value) << "(" << m_metadata << ")"; } 69 #endif 70 71 inline bool special__gnu_pbds::detail::splay_tree_node_72 special() const 73 { return m_special; } 74 75 inline metadata_const_reference get_metadata__gnu_pbds::detail::splay_tree_node_76 get_metadata() const 77 { return m_metadata; } 78 79 inline metadata_reference get_metadata__gnu_pbds::detail::splay_tree_node_80 get_metadata() 81 { return m_metadata; } 82 83 value_type m_value; 84 bool m_special; 85 node_pointer m_p_left; 86 node_pointer m_p_right; 87 node_pointer m_p_parent; 88 metadata_type m_metadata; 89 }; 90 91 template<typename Value_Type, typename _Alloc> 92 struct splay_tree_node_<Value_Type, null_type, _Alloc> 93 { 94 public: 95 typedef Value_Type value_type; 96 typedef null_type metadata_type; 97 98 typedef typename rebind_traits<_Alloc, splay_tree_node_>::pointer 99 node_pointer; 100 101 inline bool special__gnu_pbds::detail::splay_tree_node_102 special() const 103 { return m_special; } 104 105 #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_ 106 void trace__gnu_pbds::detail::splay_tree_node_107 trace() const 108 { std::cout << PB_DS_V2F(m_value); } 109 #endif 110 111 node_pointer m_p_left; 112 node_pointer m_p_right; 113 node_pointer m_p_parent; 114 value_type m_value; 115 bool m_special; 116 }; 117 } // namespace detail 118 } // namespace __gnu_pbds 119 120 #endif 121