00001 // Filename: hashGenerator.h 00002 // Created by: drose (22Mar01) 00003 // 00004 //////////////////////////////////////////////////////////////////// 00005 // 00006 // PANDA 3D SOFTWARE 00007 // Copyright (c) 2001, Disney Enterprises, Inc. All rights reserved 00008 // 00009 // All use of this software is subject to the terms of the Panda 3d 00010 // Software license. You should have received a copy of this license 00011 // along with this source code; you will also find a current copy of 00012 // the license at http://www.panda3d.org/license.txt . 00013 // 00014 // To contact the maintainers of this program write to 00015 // panda3d@yahoogroups.com . 00016 // 00017 //////////////////////////////////////////////////////////////////// 00018 00019 #ifndef DCHASHGENERATOR_H 00020 #define DCHASHGENERATOR_H 00021 00022 #include "dcbase.h" 00023 #include "primeNumberGenerator.h" 00024 00025 //////////////////////////////////////////////////////////////////// 00026 // Class : HashGenerator 00027 // Description : This class generates an arbitrary hash number from a 00028 // sequence of ints. 00029 //////////////////////////////////////////////////////////////////// 00030 class HashGenerator { 00031 public: 00032 HashGenerator(); 00033 00034 void add_int(int num); 00035 void add_string(const string &str); 00036 00037 unsigned long get_hash() const; 00038 00039 private: 00040 long _hash; 00041 int _index; 00042 PrimeNumberGenerator _primes; 00043 }; 00044 00045 #endif
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