vrfObjectPredicate.h

Go to the documentation of this file.

/*******************************************************************************
** Copyright (c) 2001 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/
#pragma once



#include "vrfobjcore/vrfobjcoreDefines.h"
#include "vrfobjcore/simObject.h"
#include <vlutil/vlMachineTypes.h>
#include <ostream>

class DT_DLL_vrfobjcore DtVrfObjectPredicate
{
public:

   DtVrfObjectPredicate(bool negate = false);

   virtual ~DtVrfObjectPredicate();

   DtVrfObjectPredicate(const DtVrfObjectPredicate& orig);

   DtVrfObjectPredicate& operator=(const DtVrfObjectPredicate& orig);

   virtual DtVrfObjectPredicate* clone() const = 0;

   bool operator==(const DtVrfObjectPredicate& orig) const;
   bool operator!=(const DtVrfObjectPredicate& orig) const;

   virtual bool negated() const;
   virtual void setNegate(bool negate);

   bool isTrue(const DtSimObject* vrfObject) const;

   
   virtual bool canBeTrue(const DtSimObject* vrfObject);
   virtual bool canBeFalse(const DtSimObject* vrfObject);

   virtual void stringRep(std::ostream& str, int indentLevel = 0) const;

public:

   static const DtVrfObjectPredicate& nullPredicate();

protected:

   virtual bool eval(const DtSimObject* vrfObject) const = 0;

   virtual bool predicateEqual(const DtVrfObjectPredicate& orig) const;

   virtual bool canEvalTrue(const DtSimObject* vrfObject) const { return true; };
   virtual bool canEvalFalse(const DtSimObject* vrfObject) const { return true; };

   virtual void typeSpecificStringRep(std::ostream& str, int indentLevel) const;

protected:

   bool myNegated;
};