libstdc++-v3/include/ext/pb_ds/detail/ov_tree_map_/traits.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005-2014 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