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CnC_Renegade/Code/wwlib/hash.h

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/*
** Command & Conquer Renegade(tm)
** Copyright 2025 Electronic Arts Inc.
**
** This program is free software: you can redistribute it and/or modify
** it under the terms of the GNU General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU General Public License for more details.
**
** You should have received a copy of the GNU General Public License
** along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/* $Header: /Commando/Code/wwlib/hash.h 2 6/15/00 10:53a Byon_g $ */
/***********************************************************************************************
*** Confidential - Westwood Studios ***
***********************************************************************************************
* *
* Project Name : Commando / G 3D Library *
* *
* $Archive:: /Commando/Code/wwlib/hash.h $*
* *
* Author:: Greg_h *
* *
* $Modtime:: 6/15/00 9:43a $*
* *
* $Revision:: 2 $*
* *
*---------------------------------------------------------------------------------------------*
* Functions: *
* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
#if defined(_MSC_VER)
#pragma once
#endif
#ifndef HASH_H
#define HASH_H
#include "always.h"
class HashTableIteratorClass;
/*
** HashableClass
*/
class HashableClass {
public:
HashableClass( void ) : NextHash( NULL ) {}
virtual ~HashableClass( void ) {}
virtual const char * Get_Key( void ) = 0;
private:
HashableClass * NextHash;
friend class HashTableClass;
friend class HashTableIteratorClass;
};
/*
** HashTableClass
*/
class HashTableClass {
public:
HashTableClass( int size );
~HashTableClass( void );
void Reset( void );
void Add( HashableClass * entry );
bool Remove( HashableClass * entry );
HashableClass * Find( const char * key );
private:
// HashTableSize MUST be a power of two
int HashTableSize;
HashableClass * * HashTable;
// Convert key to a table index
int Hash( const char * key );
friend class HashTableIteratorClass;
};
/*
**
*/
class HashTableIteratorClass
{
public:
HashTableIteratorClass( HashTableClass & table ) : Table( table ) {}
virtual ~HashTableIteratorClass( void ) {}
void First( void );
void Next( void );
bool Is_Done( void ) { return CurrentEntry == NULL; }
HashableClass * Get_Current( void ) { return CurrentEntry; }
private:
const HashTableClass & Table;
int Index;
HashableClass * CurrentEntry;
HashableClass * NextEntry;
void Advance_Next( void );
};
#endif // HASH_H