libstdc++
bin_search_tree_/traits.hpp
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1 // -*- C++ -*-
2 
3 // Copyright (C) 2005-2014 Free Software Foundation, Inc.
4 //
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11 // This library is distributed in the hope that it will be useful, but
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16 // Under Section 7 of GPL version 3, you are granted additional
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18 // 3.1, as published by the Free Software Foundation.
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25 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL.
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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 bin_search_tree_traits<
170  Key,
171  null_type,
172  Cmp_Fn,
173  Node_Update,
174  Node,
175  _Alloc>
176  {
177  private:
178  typedef types_traits<Key, null_type, _Alloc, false> type_traits;
179 
180  public:
181  typedef Node node;
182 
183  typedef
184  bin_search_tree_const_it_<
185  typename _Alloc::template rebind<
186  node>::other::pointer,
187  typename type_traits::value_type,
188  typename type_traits::pointer,
189  typename type_traits::const_pointer,
190  typename type_traits::reference,
191  typename type_traits::const_reference,
192  true,
193  _Alloc>
194  point_const_iterator;
195 
196  typedef point_const_iterator point_iterator;
197 
198  typedef
199  bin_search_tree_const_it_<
200  typename _Alloc::template rebind<
201  node>::other::pointer,
202  typename type_traits::value_type,
203  typename type_traits::pointer,
204  typename type_traits::const_pointer,
205  typename type_traits::reference,
206  typename type_traits::const_reference,
207  false,
208  _Alloc>
209  const_reverse_iterator;
210 
211  typedef const_reverse_iterator reverse_iterator;
212 
213  /// This is an iterator to an iterator: it iterates over nodes,
214  /// and de-referencing it returns one of the tree's iterators.
215  typedef
216  bin_search_tree_const_node_it_<
217  Node,
218  point_const_iterator,
219  point_iterator,
220  _Alloc>
221  node_const_iterator;
222 
223  typedef node_const_iterator node_iterator;
224 
225  typedef
226  Node_Update<node_const_iterator, node_iterator, Cmp_Fn, _Alloc>
227  node_update;
228 
229  typedef
230  __gnu_pbds::null_node_update<
231  node_const_iterator,
232  node_iterator,
233  Cmp_Fn,
234  _Alloc>*
235  null_node_update_pointer;
236  };
237 
238  } // namespace detail
239 } // namespace __gnu_pbds
240 
241 #endif // #ifndef PB_DS_BIN_SEARCH_TREE_NODE_AND_IT_TRAITS_HPP
__gnu_pbds::detail::bin_search_tree_traits::node_const_iterator
bin_search_tree_const_node_it_< Node, point_const_iterator, point_iterator, _Alloc > node_const_iterator
This is an iterator to an iterator: it iterates over nodes, and de-referencing it returns one of the ...
Definition: bin_search_tree_/traits.hpp:131
__gnu_pbds::detail::bin_search_tree_traits
Binary search tree traits, primary template.
Definition: bin_search_tree_/traits.hpp:63
__gnu_pbds::null_type
Represents no type, or absence of type, for template tricks.
Definition: tag_and_trait.hpp:210
__gnu_pbds::detail::bin_search_tree_traits< Key, null_type, Cmp_Fn, Node_Update, Node, _Alloc >::node_const_iterator
bin_search_tree_const_node_it_< Node, point_const_iterator, point_iterator, _Alloc > node_const_iterator
This is an iterator to an iterator: it iterates over nodes, and de-referencing it returns one of the ...
Definition: bin_search_tree_/traits.hpp:221
__gnu_pbds::null_node_update
A null node updator, indicating that no node updates are required.
Definition: tag_and_trait.hpp:214