Panda3D
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hashGeneratorBase.h
00001 // Filename: hashGeneratorBase.h
00002 // Created by:  drose (14May01)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef HASHGENERATORBASE_H
00016 #define HASHGENERATORBASE_H
00017 
00018 #include "pandabase.h"
00019 
00020 ////////////////////////////////////////////////////////////////////
00021 //       Class : HashGeneratorBase
00022 // Description : This is the base class for a number of classes that
00023 //               generate arbitrary hash numbers for complex objects,
00024 //               based fundamentally on a sequence of integers.
00025 //
00026 //               There are no virtual functions here, for performance
00027 //               reasons; it is generally desirable to generate hash
00028 //               numbers as quickly as possible.  The derived classes
00029 //               must redefine all the basic functionality.
00030 //
00031 //               Thus, a compile-time decision must be made for the
00032 //               kind of HashGenerator that is appropriate for a
00033 //               particular class.
00034 ////////////////////////////////////////////////////////////////////
00035 class EXPCL_PANDAEXPRESS HashGeneratorBase {
00036 public:
00037   INLINE HashGeneratorBase();
00038   INLINE ~HashGeneratorBase();
00039 
00040   INLINE size_t get_hash() const;
00041 
00042 protected:
00043   size_t _hash;
00044 };
00045 
00046 #include "hashGeneratorBase.I"
00047 
00048 #endif
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