parse/desr/src/Enumerator.h
00001 /* 00002 ** DeSR 00003 ** src/Enumerator.h 00004 ** ---------------------------------------------------------------------- 00005 ** Copyright (c) 2005 Giuseppe Attardi (attardi@di.unipi.it). 00006 ** ---------------------------------------------------------------------- 00007 ** 00008 ** This file is part of DeSR. 00009 ** 00010 ** DeSR is free software; you can redistribute it and/or modify it 00011 ** under the terms of the GNU General Public License, version 3, 00012 ** as published by the Free Software Foundation. 00013 ** 00014 ** DeSR is distributed in the hope that it will be useful, 00015 ** but WITHOUT ANY WARRANTY; without even the implied warranty of 00016 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 00017 ** GNU General Public License for more details. 00018 ** 00019 ** You should have received a copy of the GNU General Public License 00020 ** along with this program. If not, see <http://www.gnu.org/licenses/>. 00021 ** ---------------------------------------------------------------------- 00022 */ 00023 00024 #ifndef Tanl_Enumerator_H 00025 #define Tanl_Enumerator_H 00026 00027 namespace Tanl { 00028 00032 struct Disposable { 00034 virtual void Dispose() {} 00035 }; 00036 00042 template <class T> 00043 class Enumerator : public Disposable 00044 { 00045 public: 00046 typedef T ItemType; 00047 00050 virtual bool MoveNext() = 0; 00051 00053 virtual ItemType Current() = 0; 00054 00056 virtual void Reset() {} 00057 00058 virtual ~Enumerator() {} 00059 }; 00060 00061 } // namespace Tanl 00062 00063 #endif // Tanl_Enumerator_H