libstdc++

ov_tree_map_/traits.hpp
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1 // -*- C++ -*-
2
3 // Copyright (C) 2005-2013 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 ov_tree_map_/traits.hpp
38 * Contains an implementation class for ov_tree_.
39 */
40
41 #ifndef PB_DS_OV_TREE_NODE_AND_IT_TRAITS_HPP
42 #define PB_DS_OV_TREE_NODE_AND_IT_TRAITS_HPP
43
44 #include <ext/pb_ds/detail/ov_tree_map_/node_iterators.hpp>
45
46 namespace __gnu_pbds
47 {
48 namespace detail
49 {
50 /// Tree traits.
51 /// @ingroup traits
52 template<typename Key,
53 typename Mapped,
54 class Cmp_Fn,
55 template<typename Node_CItr,
56 class Node_Itr,
57 class Cmp_Fn_,
58 typename _Alloc_>
59 class Node_Update,
60 typename _Alloc>
61 struct tree_traits<
62 Key,
63 Mapped,
64 Cmp_Fn,
65 Node_Update,
66 ov_tree_tag,
67 _Alloc>
68 {
69 private:
70 typedef
71 typename types_traits<
72 Key,
73 Mapped,
74 _Alloc,
75 false>::value_type
76 value_type;
77
78 public:
79 typedef
80 typename tree_node_metadata_dispatch<
81 Key,
82 Mapped,
83 Cmp_Fn,
84 Node_Update,
85 _Alloc>::type
86 metadata_type;
87
88 /// This is an iterator to an iterator: it iterates over nodes,
89 /// and de-referencing it returns one of the tree's iterators.
90 typedef
91 ov_tree_node_const_it_<
92 value_type,
93 metadata_type,
94 _Alloc>
95 node_const_iterator;
96
97 typedef
98 ov_tree_node_it_<
99 value_type,
100 metadata_type,
101 _Alloc>
102 node_iterator;
103
104 typedef
105 Node_Update<
106 node_const_iterator,
107 node_iterator,
108 Cmp_Fn,
109 _Alloc>
110 node_update;
111
112 typedef
113 __gnu_pbds::null_node_update<
114 node_const_iterator,
115 node_iterator,
116 Cmp_Fn,
117 _Alloc>*
118 null_node_update_pointer;
119 };
120
121
122 /// Specialization.
123 /// @ingroup traits
124 template<typename Key,
125 class Cmp_Fn,
126 template<typename Node_CItr,
127 class Node_Itr,
128 class Cmp_Fn_,
129 typename _Alloc_>
130 class Node_Update,
131 typename _Alloc>
132 struct tree_traits<
133 Key,
134 null_type,
135 Cmp_Fn,
136 Node_Update,
137 ov_tree_tag,
138 _Alloc>
139 {
140 private:
141 typedef
142 typename types_traits<
143 Key,
144 null_type,
145 _Alloc,
146 false>::value_type
147 value_type;
148
149 public:
150 typedef
151 typename tree_node_metadata_dispatch<
152 Key,
153 null_type,
154 Cmp_Fn,
155 Node_Update,
156 _Alloc>::type
157 metadata_type;
158
159 /// This is an iterator to an iterator: it iterates over nodes,
160 /// and de-referencing it returns one of the tree's iterators.
161 typedef
162 ov_tree_node_const_it_<
163 value_type,
164 metadata_type,
165 _Alloc>
166 node_const_iterator;
167
168 typedef node_const_iterator node_iterator;
169
170 typedef
171 Node_Update<
172 node_const_iterator,
173 node_const_iterator,
174 Cmp_Fn,
175 _Alloc>
176 node_update;
177
178 typedef
179 __gnu_pbds::null_node_update<
180 node_const_iterator,
181 node_iterator,
182 Cmp_Fn,
183 _Alloc>*
184 null_node_update_pointer;
185 };
186 } // namespace detail
187 } // namespace __gnu_pbds
188
189 #endif // #ifndef PB_DS_OV_TREE_NODE_AND_IT_TRAITS_HPP
190