1 // -*- C++ -*-
2 
3 // Copyright (C) 2005-2018 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 bin_search_tree_/traits.hpp
38  * Contains an implementation for bin_search_tree_.
39  */
40 
41 #ifndef PB_DS_BIN_SEARCH_TREE_NODE_AND_IT_TRAITS_HPP
42 #define PB_DS_BIN_SEARCH_TREE_NODE_AND_IT_TRAITS_HPP
43 
44 #include <ext/pb_ds/detail/bin_search_tree_/point_iterators.hpp>
45 #include <ext/pb_ds/detail/bin_search_tree_/node_iterators.hpp>
46 
47 namespace __gnu_pbds
48 {
49   namespace detail
50   {
51     /// Binary search tree traits, primary template
52     /// @ingroup traits
53     template<typename Key,
54 	     typename Mapped,
55 	     class Cmp_Fn,
56 	     template<typename Node_CItr,
57 		      class Node_Itr,
58 		      class _Cmp_Fn,
59 		      typename _Alloc>
60 	     class Node_Update,
61 	     class Node,
62 	     typename _Alloc>
63     struct bin_search_tree_traits
64     {
65     private:
66       typedef types_traits<Key, Mapped, _Alloc, false> type_traits;
67 
68     public:
69       typedef Node node;
70 
71       typedef
72       bin_search_tree_const_it_<
73 	typename _Alloc::template rebind<
74 	node>::other::pointer,
75 	typename type_traits::value_type,
76 	typename type_traits::pointer,
77 	typename type_traits::const_pointer,
78 	typename type_traits::reference,
79 	typename type_traits::const_reference,
80 	true,
81 	_Alloc>
82       point_const_iterator;
83 
84       typedef
85       bin_search_tree_it_<
86 	typename _Alloc::template rebind<
87 	node>::other::pointer,
88 	typename type_traits::value_type,
89 	typename type_traits::pointer,
90 	typename type_traits::const_pointer,
91 	typename type_traits::reference,
92 	typename type_traits::const_reference,
93 	true,
94 	_Alloc>
95       point_iterator;
96 
97       typedef
98       bin_search_tree_const_it_<
99 	typename _Alloc::template rebind<
100 	node>::other::pointer,
101 	typename type_traits::value_type,
102 	typename type_traits::pointer,
103 	typename type_traits::const_pointer,
104 	typename type_traits::reference,
105 	typename type_traits::const_reference,
106 	false,
107 	_Alloc>
108       const_reverse_iterator;
109 
110       typedef
111       bin_search_tree_it_<
112 	typename _Alloc::template rebind<
113 	node>::other::pointer,
114 	typename type_traits::value_type,
115 	typename type_traits::pointer,
116 	typename type_traits::const_pointer,
117 	typename type_traits::reference,
118 	typename type_traits::const_reference,
119 	false,
120 	_Alloc>
121       reverse_iterator;
122 
123       /// This is an iterator to an iterator: it iterates over nodes,
124       /// and de-referencing it returns one of the tree's iterators.
125       typedef
126       bin_search_tree_const_node_it_<
127 	Node,
128 	point_const_iterator,
129 	point_iterator,
130 	_Alloc>
131       node_const_iterator;
132 
133       typedef
134       bin_search_tree_node_it_<
135 	Node,
136 	point_const_iterator,
137 	point_iterator,
138 	_Alloc>
139       node_iterator;
140 
141       typedef
142       Node_Update<
143 	node_const_iterator,
144 	node_iterator,
145 	Cmp_Fn,
146 	_Alloc>
147       node_update;
148 
149       typedef
150       __gnu_pbds::null_node_update<
151 	node_const_iterator,
152 	node_iterator,
153 	Cmp_Fn,
154 	_Alloc>*
155       null_node_update_pointer;
156     };
157 
158     /// Specialization.
159     /// @ingroup traits
160     template<typename Key,
161 	     class Cmp_Fn,
162 	     template<typename Node_CItr,
163 		      class Node_Itr,
164 		      class _Cmp_Fn,
165 		      typename _Alloc>
166 	     class Node_Update,
167 	     class Node,
168 	     typename _Alloc>
169     struct
170     bin_search_tree_traits<Key, null_type, Cmp_Fn, Node_Update, Node, _Alloc>
171     {
172     private:
173       typedef types_traits<Key, null_type, _Alloc, false> type_traits;
174 
175     public:
176       typedef Node node;
177 
178       typedef
179       bin_search_tree_const_it_<
180 	typename _Alloc::template rebind<
181 	node>::other::pointer,
182 	typename type_traits::value_type,
183 	typename type_traits::pointer,
184 	typename type_traits::const_pointer,
185 	typename type_traits::reference,
186 	typename type_traits::const_reference,
187 	true,
188 	_Alloc>
189       point_const_iterator;
190 
191       typedef point_const_iterator point_iterator;
192 
193       typedef
194       bin_search_tree_const_it_<
195 	typename _Alloc::template rebind<
196 	node>::other::pointer,
197 	typename type_traits::value_type,
198 	typename type_traits::pointer,
199 	typename type_traits::const_pointer,
200 	typename type_traits::reference,
201 	typename type_traits::const_reference,
202 	false,
203 	_Alloc>
204       const_reverse_iterator;
205 
206       typedef const_reverse_iterator reverse_iterator;
207 
208       /// This is an iterator to an iterator: it iterates over nodes,
209       /// and de-referencing it returns one of the tree's iterators.
210       typedef
211       bin_search_tree_const_node_it_<
212 	Node,
213 	point_const_iterator,
214 	point_iterator,
215 	_Alloc>
216       node_const_iterator;
217 
218       typedef node_const_iterator node_iterator;
219 
220       typedef
221       Node_Update<node_const_iterator, node_iterator, Cmp_Fn, _Alloc>
222       node_update;
223 
224       typedef
225       __gnu_pbds::null_node_update<
226 	node_const_iterator,
227 	node_iterator,
228 	Cmp_Fn,
229 	_Alloc>*
230       null_node_update_pointer;
231     };
232 
233   } // namespace detail
234 } // namespace __gnu_pbds
235 
236 #endif // #ifndef PB_DS_BIN_SEARCH_TREE_NODE_AND_IT_TRAITS_HPP
237