1 2 /* Class object interface */ 3 4 /* Revealing some structures (not for general use) */ 5 6 #ifndef Py_CLASSOBJECT_H 7 #define Py_CLASSOBJECT_H 8 #ifdef __cplusplus 9 extern "C" { 10 #endif 11 12 typedef struct { 13 PyObject_HEAD 14 PyObject *cl_bases; /* A tuple of class objects */ 15 PyObject *cl_dict; /* A dictionary */ 16 PyObject *cl_name; /* A string */ 17 /* The following three are functions or NULL */ 18 PyObject *cl_getattr; 19 PyObject *cl_setattr; 20 PyObject *cl_delattr; 21 PyObject *cl_weakreflist; /* List of weak references */ 22 } PyClassObject; 23 24 typedef struct { 25 PyObject_HEAD 26 PyClassObject *in_class; /* The class object */ 27 PyObject *in_dict; /* A dictionary */ 28 PyObject *in_weakreflist; /* List of weak references */ 29 } PyInstanceObject; 30 31 typedef struct { 32 PyObject_HEAD 33 PyObject *im_func; /* The callable object implementing the method */ 34 PyObject *im_self; /* The instance it is bound to, or NULL */ 35 PyObject *im_class; /* The class that asked for the method */ 36 PyObject *im_weakreflist; /* List of weak references */ 37 } PyMethodObject; 38 39 PyAPI_DATA(PyTypeObject) PyClass_Type, PyInstance_Type, PyMethod_Type; 40 41 #define PyClass_Check(op) ((op)->ob_type == &PyClass_Type) 42 #define PyInstance_Check(op) ((op)->ob_type == &PyInstance_Type) 43 #define PyMethod_Check(op) ((op)->ob_type == &PyMethod_Type) 44 45 PyAPI_FUNC(PyObject *) PyClass_New(PyObject *, PyObject *, PyObject *); 46 PyAPI_FUNC(PyObject *) PyInstance_New(PyObject *, PyObject *, 47 PyObject *); 48 PyAPI_FUNC(PyObject *) PyInstance_NewRaw(PyObject *, PyObject *); 49 PyAPI_FUNC(PyObject *) PyMethod_New(PyObject *, PyObject *, PyObject *); 50 51 PyAPI_FUNC(PyObject *) PyMethod_Function(PyObject *); 52 PyAPI_FUNC(PyObject *) PyMethod_Self(PyObject *); 53 PyAPI_FUNC(PyObject *) PyMethod_Class(PyObject *); 54 55 /* Look up attribute with name (a string) on instance object pinst, using 56 * only the instance and base class dicts. If a descriptor is found in 57 * a class dict, the descriptor is returned without calling it. 58 * Returns NULL if nothing found, else a borrowed reference to the 59 * value associated with name in the dict in which name was found. 60 * The point of this routine is that it never calls arbitrary Python 61 * code, so is always "safe": all it does is dict lookups. The function 62 * can't fail, never sets an exception, and NULL is not an error (it just 63 * means "not found"). 64 */ 65 PyAPI_FUNC(PyObject *) _PyInstance_Lookup(PyObject *pinst, PyObject *name); 66 67 /* Macros for direct access to these values. Type checks are *not* 68 done, so use with care. */ 69 #define PyMethod_GET_FUNCTION(meth) \ 70 (((PyMethodObject *)meth) -> im_func) 71 #define PyMethod_GET_SELF(meth) \ 72 (((PyMethodObject *)meth) -> im_self) 73 #define PyMethod_GET_CLASS(meth) \ 74 (((PyMethodObject *)meth) -> im_class) 75 76 PyAPI_FUNC(int) PyClass_IsSubclass(PyObject *, PyObject *); 77 78 PyAPI_FUNC(int) PyMethod_ClearFreeList(void); 79 80 #ifdef __cplusplus 81 } 82 #endif 83 #endif /* !Py_CLASSOBJECT_H */ 84