contrib/gcc-4.4/libstdc++-v3/include/ext/pb_ds/detail/basic_tree_policy/null_node_metadata.hpp

   1 // -*- C++ -*-
   2
   3 // Copyright (C) 2005, 2006, 2009 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 null_node_metadata.hpp
  38  * Contains an implementation class for tree-like classes.
  39  */
  40
  41 #ifndef PB_DS_NULL_NODE_METADATA_HPP
  42 #define PB_DS_NULL_NODE_METADATA_HPP
  43
  44 #include <ext/pb_ds/detail/types_traits.hpp>
  45
  46 namespace __gnu_pbds
  47 {
  48   namespace detail
  49   {
  50     template<typename Key, class Data, class Allocator>
  51     struct dumconst_node_iterator
  52     {
  53     private:
  54       typedef typename types_traits<Key, Data, Allocator, false>::pointer const_iterator;
  55
  56     public:
  57       typedef const_iterator value_type;
  58       typedef const_iterator const_reference;
  59       typedef const_reference reference;
  60     };
  61
  62     struct null_node_metadata
  63     { };
  64   } // namespace detail
  65 } // namespace __gnu_pbds
  66
  67 #endif