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 190 191
