casobject.h

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// -*- C++ -*-
//
//  Copyright (c) 2006 by Rafael Ostertag
//
//  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 2 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, write to the Free Software
//  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
//
//
// $Id: casobject.h,v 1.19 2006/12/28 19:01:24 rafi Exp $
//

#include "casgarbage.h"

#ifndef _CASOBJECT_H
#define _CASOBJECT_H

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#ifdef DEBUG
#include <cassert>
#endif

#include <string>

#include "casmetainfo.h"
#include "castype.h"

class CASObject {
    public:
        CASObject *exponent;

        CASMetaInfo meta;

        static class CASGarbage *Garbage;

        virtual CASObject* Clone() const = 0;

        virtual CASType GetType() const = 0;

        virtual void Get ( std::string &s ) const = 0;

        virtual void Get ( char *s, unsigned long size ) const = 0;

        virtual void Print() const = 0;

        virtual unsigned long Length() const = 0;

        virtual bool IsZero() const = 0;

        virtual bool IsOne() const = 0;

        virtual CASObject* Absolute() const = 0;

        virtual void AbsoluteIP() = 0;

        virtual CASObject* Invert() const = 0;

        virtual void InvertIP() = 0;

        virtual CASObject* Add ( const CASObject* addend ) const = 0;

        virtual CASObject* Subtract ( const CASObject* subtrahend ) const = 0;

        virtual CASObject* Multiply ( const CASObject* factor ) const = 0;

        virtual CASObject* Divide ( const CASObject* divisor ) const = 0;

        virtual CASObject* Power ( const CASObject* exponent ) const = 0;

        virtual CASObject* Modulo ( const CASObject* divisor ) const = 0;

        virtual CASObject* GCD ( const CASObject* o ) const = 0;

        virtual bool IsEqual ( const CASObject* o ) const = 0;

        virtual bool IsLT ( const CASObject* o ) const = 0;

        virtual bool IsGT ( const CASObject* o ) const = 0;

        virtual bool IsPureNumerical() const = 0;

        virtual bool IsSimilar ( const CASObject *o ) const = 0;

        virtual CASObject* SortWeight() const = 0;

        virtual void Sort() = 0;

        virtual CASObject* Evaluate() const = 0;

        inline CASObject() { exponent = 0; }

    inline virtual ~CASObject() {};

        friend class CASAbsoluteObjectIP;
        friend class CASInvertObjectIP;
};

#endif /* _CASOBJECT_H */

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