1 // -*- C++ -*- 2 3 // Copyright (C) 2005, 2006 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 2, 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 // You should have received a copy of the GNU General Public License 17 // along with this library; see the file COPYING. If not, write to 18 // the Free Software Foundation, 59 Temple Place - Suite 330, Boston, 19 // MA 02111-1307, USA. 20 21 // As a special exception, you may use this file as part of a free 22 // software library without restriction. Specifically, if other files 23 // instantiate templates or use macros or inline functions from this 24 // file, or you compile this file and link it with other files to 25 // produce an executable, this file does not by itself cause the 26 // resulting executable to be covered by the GNU General Public 27 // License. This exception does not however invalidate any other 28 // reasons why the executable file might be covered by the GNU General 29 // Public License. 30 31 // Copyright (C) 2004 Ami Tavory and Vladimir Dreizin, IBM-HRL. 32 33 // Permission to use, copy, modify, sell, and distribute this software 34 // is hereby granted without fee, provided that the above copyright 35 // notice appears in all copies, and that both that copyright notice 36 // and this permission notice appear in supporting documentation. None 37 // of the above authors, nor IBM Haifa Research Laboratories, make any 38 // representation about the suitability of this software for any 39 // purpose. It is provided "as is" without express or implied 40 // warranty. 41 42 /** 43 * @file null_node_metadata.hpp 44 * Contains an implementation class for tree-like classes. 45 */ 46 47 #ifndef PB_DS_NULL_NODE_METADATA_HPP 48 #define PB_DS_NULL_NODE_METADATA_HPP 49 50 #include <ext/pb_ds/detail/types_traits.hpp> 51 52 namespace pb_ds 53 { 54 namespace detail 55 { 56 template<typename Key, class Data, class Allocator> 57 struct dumconst_node_iterator 58 { 59 private: 60 typedef typename types_traits<Key, Data, Allocator, false>::pointer const_iterator; 61 62 public: 63 typedef const_iterator value_type; 64 typedef const_iterator const_reference; 65 typedef const_reference reference; 66 }; 67 68 struct null_node_metadata 69 { }; 70 } // namespace detail 71 } // namespace pb_ds 72 73 #endif 74