casconvert.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: casconvert.h,v 1.9 2006/12/31 00:50:35 rafi Exp $
//

#ifndef _CASCONVERT_H
#define _CASCONVERT_H

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

#include <vector>

#include "casobject.h"
#include "castype.h"
#include "longint.h"
#include "product.h"
#include "sum.h"
#include "fraction.h"
#include "variable.h"

class CASConvert {
    private:
    CASObject *casobject;

    std::vector<CASObject*> vector;

    protected:
        template<class T> T* vector2type() const throw ( EDoesNotApply );

        template<class T> T* casobject2type() const throw ( EDoesNotApply );

        virtual Variable* vector2variable()  const throw ( EDoesNotApply );
        virtual Variable* casobject2variable()  const throw ( EDoesNotApply );
        virtual LongInt* vector2longint()  const throw ( EDoesNotApply );
        virtual LongInt* casobject2longint()  const throw ( EDoesNotApply );
        virtual Fraction* vector2fraction()  const throw ( EDoesNotApply );
        virtual Fraction* casobject2fraction()  const throw ( EDoesNotApply );


    public:
        CASConvert ( const CASObject* o );
        CASConvert ( const std::vector<const CASObject*>& v );
        virtual ~CASConvert();
        CASConvert ( const CASConvert &o );

        virtual Sum *ToSum()  const throw ( EDoesNotApply );
        virtual Product *ToProduct()  const throw ( EDoesNotApply );
        virtual Variable *ToVariable()  const throw ( EDoesNotApply );
        virtual LongInt* ToLongInt()  const throw ( EDoesNotApply );
        virtual Fraction *ToFraction()  const throw ( EDoesNotApply );

        CASConvert &operator= ( const CASConvert &o );

};

#endif /* _CASCONVERT_H */

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