3 // Copyright (C) 2005-2023 Free Software Foundation, Inc.
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
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.
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.
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/>.
25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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
37 * @file rb_tree_map_/node.hpp
38 * Contains an implementation for rb_tree_.
41 #ifndef PB_DS_RB_TREE_NODE_HPP
42 #define PB_DS_RB_TREE_NODE_HPP
44 #include <ext/pb_ds/detail/branch_policy/null_node_metadata.hpp>
50 /// Node for Red-Black trees.
51 template<typename Value_Type, class Metadata, typename _Alloc>
55 typedef Value_Type value_type;
56 typedef Metadata metadata_type;
58 typedef typename rebind_traits<_Alloc, rb_tree_node_>::pointer
61 typedef typename rebind_traits<_Alloc, metadata_type>::reference
64 typedef typename rebind_traits<_Alloc, metadata_type>::const_reference
65 metadata_const_reference;
71 metadata_const_reference
73 { return m_metadata; }
77 { return m_metadata; }
79 #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_
83 std::cout << PB_DS_V2F(m_value) <<(m_red? " <r> " : " <b> ")
84 << "(" << m_metadata << ")";
88 node_pointer m_p_left;
89 node_pointer m_p_right;
90 node_pointer m_p_parent;
93 metadata_type m_metadata;
96 template<typename Value_Type, typename _Alloc>
97 struct rb_tree_node_<Value_Type, null_type, _Alloc>
100 typedef Value_Type value_type;
101 typedef null_type metadata_type;
103 typedef typename rebind_traits<_Alloc, rb_tree_node_>::pointer
110 #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_
113 { std::cout << PB_DS_V2F(m_value) <<(m_red? " <r> " : " <b> "); }
116 node_pointer m_p_left;
117 node_pointer m_p_right;
118 node_pointer m_p_parent;
122 } // namespace detail
123 } // namespace __gnu_pbds