3 // Copyright (C) 2005-2021 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 splay_tree_/node.hpp
38 * Contains an implementation struct for splay_tree_'s node.
41 #ifndef PB_DS_SPLAY_TREE_NODE_HPP
42 #define PB_DS_SPLAY_TREE_NODE_HPP
48 /// Node for splay tree.
49 template<typename Value_Type, class Metadata, typename _Alloc>
50 struct splay_tree_node_
53 typedef Value_Type value_type;
54 typedef Metadata metadata_type;
56 typedef typename rebind_traits<_Alloc, splay_tree_node_>::pointer
59 typedef typename rebind_traits<_Alloc, metadata_type>::reference
62 typedef typename rebind_traits<_Alloc, metadata_type>::const_reference
63 metadata_const_reference;
65 #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_
68 { std::cout << PB_DS_V2F(m_value) << "(" << m_metadata << ")"; }
75 inline metadata_const_reference
77 { return m_metadata; }
79 inline metadata_reference
81 { return m_metadata; }
85 node_pointer m_p_left;
86 node_pointer m_p_right;
87 node_pointer m_p_parent;
88 metadata_type m_metadata;
91 template<typename Value_Type, typename _Alloc>
92 struct splay_tree_node_<Value_Type, null_type, _Alloc>
95 typedef Value_Type value_type;
96 typedef null_type metadata_type;
98 typedef typename rebind_traits<_Alloc, splay_tree_node_>::pointer
103 { return m_special; }
105 #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_
108 { std::cout << PB_DS_V2F(m_value); }
111 node_pointer m_p_left;
112 node_pointer m_p_right;
113 node_pointer m_p_parent;
117 } // namespace detail
118 } // namespace __gnu_pbds