/* Class object interface */

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

#ifndef Py_CLASSOBJECT_H

#define Py_CLASSOBJECT_H

#ifdef __cplusplus

extern "C" {

#endif

typedef struct {

    PyObject_HEAD

    PyObject	*cl_bases;	/* A tuple of class objects */

    PyObject	*cl_dict;	/* A dictionary */

    PyObject	*cl_name;	/* A string */

    /* The following three are functions or NULL */

    PyObject	*cl_getattr;

    PyObject	*cl_setattr;

    PyObject	*cl_delattr;

} PyClassObject;

typedef struct {

    PyObject_HEAD

    PyClassObject *in_class;	/* The class object */

    PyObject	  *in_dict;	/* A dictionary */

    PyObject	  *in_weakreflist; /* List of weak references */

} PyInstanceObject;

typedef struct {

    PyObject_HEAD

    PyObject *im_func;   /* The callable object implementing the method */

    PyObject *im_self;   /* The instance it is bound to, or NULL */

    PyObject *im_class;  /* The class that asked for the method */

    PyObject *im_weakreflist; /* List of weak references */

} PyMethodObject;

PyAPI_DATA(PyTypeObject) PyClass_Type, PyInstance_Type, PyMethod_Type;

#define PyClass_Check(op) ((op)->ob_type == &PyClass_Type)

#define PyInstance_Check(op) ((op)->ob_type == &PyInstance_Type)

#define PyMethod_Check(op) ((op)->ob_type == &PyMethod_Type)

PyAPI_FUNC(PyObject *) PyClass_New(PyObject *, PyObject *, PyObject *);

PyAPI_FUNC(PyObject *) PyInstance_New(PyObject *, PyObject *,

                                            PyObject *);

PyAPI_FUNC(PyObject *) PyInstance_NewRaw(PyObject *, PyObject *);

PyAPI_FUNC(PyObject *) PyMethod_New(PyObject *, PyObject *, PyObject *);

PyAPI_FUNC(PyObject *) PyMethod_Function(PyObject *);

PyAPI_FUNC(PyObject *) PyMethod_Self(PyObject *);

PyAPI_FUNC(PyObject *) PyMethod_Class(PyObject *);

/* Look up attribute with name (a string) on instance object pinst, using

 * only the instance and base class dicts.  If a descriptor is found in

 * a class dict, the descriptor is returned without calling it.

 * Returns NULL if nothing found, else a borrowed reference to the

 * value associated with name in the dict in which name was found.

 * The point of this routine is that it never calls arbitrary Python

 * code, so is always "safe":  all it does is dict lookups.  The function

 * can't fail, never sets an exception, and NULL is not an error (it just

 * means "not found").

 */

PyAPI_FUNC(PyObject *) _PyInstance_Lookup(PyObject *pinst, PyObject *name);

/* Macros for direct access to these values. Type checks are *not*

   done, so use with care. */

#define PyMethod_GET_FUNCTION(meth) \

        (((PyMethodObject *)meth) -> im_func)

#define PyMethod_GET_SELF(meth) \

	(((PyMethodObject *)meth) -> im_self)

#define PyMethod_GET_CLASS(meth) \

	(((PyMethodObject *)meth) -> im_class)

PyAPI_FUNC(int) PyClass_IsSubclass(PyObject *, PyObject *);

#ifdef __cplusplus

}

#endif

#endif /* !Py_CLASSOBJECT_H */