1// -*- C++ -*-
2
3// Copyright (C) 2005-2015 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 branch_policy/null_node_metadata.hpp
38 * Contains an implementation class for tree-like classes.
39 */
40
41#ifndef PB_DS_0_NODE_METADATA_HPP
42#define PB_DS_0_NODE_METADATA_HPP
43
44#include <ext/pb_ds/detail/types_traits.hpp>
45
46namespace __gnu_pbds
47{
48  namespace detail
49  {
50    /// Constant node iterator.
51    template<typename Key, typename Data, typename _Alloc>
52      struct dumnode_const_iterator
53      {
54      private:
55	typedef types_traits<Key, Data, _Alloc, false>	__traits_type;
56	typedef typename __traits_type::pointer        	const_iterator;
57
58      public:
59	typedef const_iterator 				value_type;
60	typedef const_iterator 				const_reference;
61	typedef const_reference 	       		reference;
62      };
63  } // namespace detail
64} // namespace __gnu_pbds
65
66#endif
67