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hashr.h

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00001 /*
00002     Copyright (C) 2003 by Jorrit Tyberghein
00003               (C) 2003 by Frank Richter
00004 
00005     This library is free software; you can redistribute it and/or
00006     modify it under the terms of the GNU Library General Public
00007     License as published by the Free Software Foundation; either
00008     version 2 of the License, or (at your option) any later version.
00009 
00010     This library is distributed in the hope that it will be useful,
00011     but WITHOUT ANY WARRANTY; without even the implied warranty of
00012     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013     Library General Public License for more details.
00014 
00015     You should have received a copy of the GNU Library General Public
00016     License along with this library; if not, write to the Free
00017     Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
00018 */
00019 
00024 #include "csutil/hash.h"
00025  
00027 template <class T, class K = uint32, 
00028   class KeyHandler = csIntegralHashKeyHandler<K>,
00029   class ReverseKeyHandler = csIntegralHashKeyHandler<T> > 
00030 class csHashReversible : public csHash<T, K, KeyHandler>
00031 {
00032   csHash<K, T, ReverseKeyHandler> reverse;
00033 public:
00037   void Put (const K& key, const T &value)
00038   {
00039     csHash<T, K, KeyHandler>::Put (key, value);
00040     reverse.Put (value, key);
00041   }
00042 
00044   const K& GetKey (const T& key) const
00045   {
00046     return reverse.Get (key);
00047   }
00048  
00049 };
00050 

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