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