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1 | // -*- C++ -*- | |
2 | ||
3 | // Copyright (C) 2005-2017 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 | |
59 | typename _Alloc::template rebind< | |
60 | rb_tree_node_< | |
61 | Value_Type, | |
62 | Metadata, | |
63 | _Alloc> >::other::pointer | |
64 | node_pointer; | |
65 | ||
66 | typedef | |
67 | typename _Alloc::template rebind< | |
68 | metadata_type>::other::reference | |
69 | metadata_reference; | |
70 | ||
71 | typedef | |
72 | typename _Alloc::template rebind< | |
73 | metadata_type>::other::const_reference | |
74 | metadata_const_reference; | |
75 | ||
76 | bool | |
77 | special() const | |
78 | { return m_red; } | |
79 | ||
80 | metadata_const_reference | |
81 | get_metadata() const | |
82 | { return m_metadata; } | |
83 | ||
84 | metadata_reference | |
85 | get_metadata() | |
86 | { return m_metadata; } | |
87 | ||
88 | #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_ | |
89 | void | |
90 | trace() const | |
91 | { | |
92 | std::cout << PB_DS_V2F(m_value) <<(m_red? " <r> " : " <b> ") | |
93 | << "(" << m_metadata << ")"; | |
94 | } | |
95 | #endif | |
96 | ||
97 | node_pointer m_p_left; | |
98 | node_pointer m_p_right; | |
99 | node_pointer m_p_parent; | |
100 | value_type m_value; | |
101 | bool m_red; | |
102 | metadata_type m_metadata; | |
103 | }; | |
104 | ||
105 | template<typename Value_Type, typename _Alloc> | |
106 | struct rb_tree_node_<Value_Type, null_type, _Alloc> | |
107 | { | |
108 | public: | |
109 | typedef Value_Type value_type; | |
110 | typedef null_type metadata_type; | |
111 | ||
112 | typedef | |
113 | typename _Alloc::template rebind< | |
114 | rb_tree_node_< | |
115 | Value_Type, | |
116 | null_type, | |
117 | _Alloc> >::other::pointer | |
118 | node_pointer; | |
119 | ||
120 | bool | |
121 | special() const | |
122 | { return m_red; } | |
123 | ||
124 | #ifdef PB_DS_BIN_SEARCH_TREE_TRACE_ | |
125 | void | |
126 | trace() const | |
127 | { std::cout << PB_DS_V2F(m_value) <<(m_red? " <r> " : " <b> "); } | |
128 | #endif | |
129 | ||
130 | node_pointer m_p_left; | |
131 | node_pointer m_p_right; | |
132 | node_pointer m_p_parent; | |
133 | value_type m_value; | |
134 | bool m_red; | |
135 | }; | |
136 | } // namespace detail | |
137 | } // namespace __gnu_pbds | |
138 | ||
139 | #endif |