45 lines
1.1 KiB
C++
45 lines
1.1 KiB
C++
|
|
|
|
#ifndef __genericobject_h__
|
|
#define __genericobject_h__
|
|
|
|
#include "yacasbase.h"
|
|
|
|
/// Not used.
|
|
/// This class has pure virtual functions, but no derived classes, so
|
|
/// it can never be used.
|
|
class LispArgList : public YacasBase
|
|
{
|
|
public:
|
|
virtual ~LispArgList();
|
|
virtual LispInt NrArguments()=0;
|
|
virtual LispChar * GetArgument(LispInt aIndex, LispInt& aLength)=0;
|
|
virtual LispBoolean Compare(LispInt aIndex, LispChar * aString)=0;
|
|
};
|
|
|
|
/// Abstract class which can be put inside a LispGenericClass.
|
|
class GenericClass : public YacasBase
|
|
{
|
|
public:
|
|
GenericClass() : iReferenceCount(0) {};
|
|
virtual ~GenericClass();
|
|
virtual LispChar * Send(LispArgList& aArgList)=0;
|
|
virtual LispChar * TypeName()=0;
|
|
public:
|
|
LispInt iReferenceCount; //TODO: perhaps share the method of reference counting with how it is done in other places
|
|
};
|
|
|
|
|
|
/* Definition of DYNCAST: either the cast succeeds, or the variable is assigned NULL.
|
|
*/
|
|
|
|
#define DYNCAST(_type,_name,_var,_object) \
|
|
_type * _var = NULL ; \
|
|
if (_object != NULL) \
|
|
{ \
|
|
if (StrEqual((_object)->TypeName(),_name)) _var = (_type *)(_object); \
|
|
}
|
|
|
|
#endif
|
|
|