Panda3D

hashGenerator.h

00001 // Filename: hashGenerator.h
00002 // Created by:  drose (22Mar01)
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 DCHASHGENERATOR_H
00016 #define DCHASHGENERATOR_H
00017 
00018 #include "dcbase.h"
00019 #include "primeNumberGenerator.h"
00020 
00021 ////////////////////////////////////////////////////////////////////
00022 //       Class : HashGenerator
00023 // Description : This class generates an arbitrary hash number from a
00024 //               sequence of ints.
00025 ////////////////////////////////////////////////////////////////////
00026 class HashGenerator {
00027 public:
00028   HashGenerator();
00029 
00030   void add_int(int num);
00031   void add_string(const string &str);
00032 
00033   unsigned long get_hash() const;
00034 
00035 private:
00036   long _hash;
00037   int _index;
00038   PrimeNumberGenerator _primes;
00039 };
00040 
00041 #endif
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