Include/classobject.h

/***********************************************************
Copyright 1991, 1992, 1993 by Stichting Mathematisch Centrum,
Amsterdam, The Netherlands.

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documentation for any purpose and without fee is hereby granted, 
provided that the above copyright notice appear in all copies and that
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distribution of the software without specific, written prior permission.

STICHTING MATHEMATISCH CENTRUM DISCLAIMS ALL WARRANTIES WITH REGARD TO
THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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******************************************************************/

/* Class object interface */

/* Revealing some structures (not for general use) */

typedef struct {
	OB_HEAD
	object	*cl_bases;	/* A tuple of class objects */
	object	*cl_dict;	/* A dictionary */
	object	*cl_name;	/* A string */
} classobject;

typedef struct {
	OB_HEAD
	classobject	*in_class;	/* The class object */
	object		*in_dict;	/* A dictionary */
} instanceobject;

extern typeobject Classtype, Instancetype, Instancemethodtype;

#define is_classobject(op) ((op)->ob_type == &Classtype)
#define is_instanceobject(op) ((op)->ob_type == &Instancetype)
#define is_instancemethodobject(op) ((op)->ob_type == &Instancemethodtype)

extern object *newclassobject PROTO((object *, object *, object *));
extern object *newinstanceobject PROTO((object *, object *));
extern object *newinstancemethodobject PROTO((object *, object *, object *));

extern object *instancemethodgetfunc PROTO((object *));
extern object *instancemethodgetself PROTO((object *));
extern object *instancemethodgetclass PROTO((object *));

extern object *instance_convert PROTO((object *, char *));

extern int issubclass PROTO((object *, object *));