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/*****************************************************************************
 * Copyright (C) 1997-2007, Mark Hummel
 * This file is part of Vrq.
 *
 * Vrq 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 2 of the License, or (at your option) any later version.
 *
 * Vrq 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 library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, 
 * Boston, MA  02110-1301  USA
 *****************************************************************************
 */
/******************************************************************************
 *
 *
 *         csymbol.hpp
 *              - class definition for symbol CSymbol 
 *
 *
 ******************************************************************************
 */

#ifndef CSYMBOL_HPP
#define CSYMBOL_HPP

#include "glue.h"
#include "cobject.h"
#include <set>


class CSymbol : public CObject
{
private:
        struct SymbolCompare {
            bool operator()( CSymbol* const& lhs, CSymbol* const& rhs );
        };
        static set<CSymbol*,SymbolCompare> hashTable;
        static CSymbol*         freeSymbol;               
        static CObstack*        obstack;                  
        static INT32            nextLabelId;              


        const char*     name;           
        INT32           hash;           
public:
        static  CSymbol* Lookup( const char* name );
        static  CSymbol* GenSymbol( const char* prefix );
        static  void    DumpTable( void );
        static  void    SetObstack( CObstack* aObstack );
        CSymbol( const char* aName );
        ~CSymbol( void );
        const char* GetName( void ) const;
        int Escaped( void ) const;
        int External() const;
        static void DumpStats();
private:
        static INT32    Hash( const char* string );
};

const char* Identifier( const char* s );

#endif // CSYMBOL_HPP