1 // -*- C++ -*- 2 3 // Copyright (C) 2005-2020 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 rb_tree_map_/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/branch_policy/null_node_metadata.hpp> 45 46 namespace __gnu_pbds 47 { 48 namespace detail 49 { 50 /// Node for Red-Black trees. 51 template<typename Value_Type, class Metadata, typename _Alloc> 52 struct rb_tree_node_ 53 { 54 public: 55 typedef Value_Type value_type; 56 typedef Metadata metadata_type; 57 58 typedef typename rebind_traits<_Alloc, rb_tree_node_>::pointer 59 node_pointer; 60 61 typedef typename rebind_traits<_Alloc, metadata_type>::reference 62 metadata_reference; 63 64 typedef typename rebind_traits<_Alloc, metadata_type>::const_reference 65 metadata_const_reference; 66 67 bool special__gnu_pbds::detail::rb_tree_node_68 special() const 69 { return m_red; } 70 71 metadata_const_reference get_metadata__gnu_pbds::detail::rb_tree_node_72 get_metadata() const 73 { return m_metadata; } 74 75 metadata_reference get_metadata__gnu_pbds::detail::rb_tree_node_76 get_metadata() 77 { return m_metadata; } 78 79 #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_ 80 void trace__gnu_pbds::detail::rb_tree_node_81 trace() const 82 { 83 std::cout << PB_DS_V2F(m_value) <<(m_red? " <r> " : " <b> ") 84 << "(" << m_metadata << ")"; 85 } 86 #endif 87 88 node_pointer m_p_left; 89 node_pointer m_p_right; 90 node_pointer m_p_parent; 91 value_type m_value; 92 bool m_red; 93 metadata_type m_metadata; 94 }; 95 96 template<typename Value_Type, typename _Alloc> 97 struct rb_tree_node_<Value_Type, null_type, _Alloc> 98 { 99 public: 100 typedef Value_Type value_type; 101 typedef null_type metadata_type; 102 103 typedef typename rebind_traits<_Alloc, rb_tree_node_>::pointer 104 node_pointer; 105 106 bool special__gnu_pbds::detail::rb_tree_node_107 special() const 108 { return m_red; } 109 110 #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_ 111 void trace__gnu_pbds::detail::rb_tree_node_112 trace() const 113 { std::cout << PB_DS_V2F(m_value) <<(m_red? " <r> " : " <b> "); } 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_red; 121 }; 122 } // namespace detail 123 } // namespace __gnu_pbds 124 125 #endif 126