add generic implementation of a __dict__ descriptor for C types
diff --git a/Objects/object.c b/Objects/object.c
index 86f5e1b..8134825 100644
--- a/Objects/object.c
+++ b/Objects/object.c
@@ -1210,6 +1210,48 @@
return _PyObject_GenericSetAttrWithDict(obj, name, value, NULL);
}
+PyObject *
+PyObject_GenericGetDict(PyObject *obj, void *context)
+{
+ PyObject *dict, **dictptr = _PyObject_GetDictPtr(obj);
+ if (dictptr == NULL) {
+ PyErr_SetString(PyExc_AttributeError,
+ "This object has no __dict__");
+ return NULL;
+ }
+ dict = *dictptr;
+ if (dict == NULL)
+ *dictptr = dict = PyDict_New();
+ Py_XINCREF(dict);
+ return dict;
+}
+
+int
+PyObject_GenericSetDict(PyObject *obj, PyObject *value, void *context)
+{
+ PyObject *dict, **dictptr = _PyObject_GetDictPtr(obj);
+ if (dictptr == NULL) {
+ PyErr_SetString(PyExc_AttributeError,
+ "This object has no __dict__");
+ return -1;
+ }
+ if (value == NULL) {
+ PyErr_SetString(PyExc_TypeError, "cannot delete __dict__");
+ return -1;
+ }
+ if (!PyDict_Check(value)) {
+ PyErr_Format(PyExc_TypeError,
+ "__dict__ must be set to a dictionary, "
+ "not a '%.200s'", Py_TYPE(value)->tp_name);
+ return -1;
+ }
+ dict = *dictptr;
+ Py_XINCREF(value);
+ *dictptr = value;
+ Py_XDECREF(dict);
+ return 0;
+}
+
/* Test a value used as condition, e.g., in a for or if statement.
Return -1 if an error occurred */