casterm.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: casterm.h,v 1.17 2006/12/28 19:01:25 rafi Exp $
//

#ifndef _CASTERM_H
#define _CASTERM_H

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

#include "casobject.h"
#include "casgarbage.h"
#include "castype.h"

class CASTerm : public CASObject {
    protected:
        std::vector<CASObject*> operands;

        virtual void GetNonSingleValues ( std::vector<const CASObject*> &lst ) const;

        virtual void GetSingleValues ( std::vector<const CASObject*> &lst ) const;

        virtual bool HaveSameOperands ( const CASObject *o ) const;

        virtual void GetOperands ( const CASTerm *t, std::vector<const CASObject*> &out ) const;

        virtual void SetOperands ( CASTerm *t, const std::vector<const CASObject*> &in ) const;
        virtual void SetOperands ( CASTerm *t, const std::vector<CASObject*> &in ) const;

    public:
        CASTerm();
        virtual ~CASTerm();

        virtual CASObject *Power ( const CASObject* exp ) const;

        virtual bool IsEqual ( const CASObject* o ) const;
        virtual bool IsLT ( const CASObject* o ) const;
        virtual bool IsGT ( const CASObject* o ) const;

        unsigned long NumOperands() const;

        virtual CASObject* Collect() const = 0;
        virtual CASObject* Expand() const = 0;

        virtual void Append ( const CASObject* a );
        virtual CASObject* SortWeight() const;
        virtual void Sort();
        virtual bool IsPureNumerical() const;

        virtual void RemoveNoOpElements() = 0;

        virtual void UnsetAllEvaluated();
        virtual void SetAllEvaluated();
};

#endif /* _CASTERM_H */

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