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 9extern "C" { 10#endif 11 12typedef 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 24typedef 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 31typedef 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 39PyAPI_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 45PyAPI_FUNC(PyObject *) PyClass_New(PyObject *, PyObject *, PyObject *); 46PyAPI_FUNC(PyObject *) PyInstance_New(PyObject *, PyObject *, 47 PyObject *); 48PyAPI_FUNC(PyObject *) PyInstance_NewRaw(PyObject *, PyObject *); 49PyAPI_FUNC(PyObject *) PyMethod_New(PyObject *, PyObject *, PyObject *); 50 51PyAPI_FUNC(PyObject *) PyMethod_Function(PyObject *); 52PyAPI_FUNC(PyObject *) PyMethod_Self(PyObject *); 53PyAPI_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 */ 65PyAPI_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 76PyAPI_FUNC(int) PyClass_IsSubclass(PyObject *, PyObject *); 77 78PyAPI_FUNC(int) PyMethod_ClearFreeList(void); 79 80#ifdef __cplusplus 81} 82#endif 83#endif /* !Py_CLASSOBJECT_H */ 84