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Fix attribute access for the xrange objects. The tp_getattr and tp_getattro 

handlers were both set, but were not compatible.  This change uses only the
tp_getattro handler with a more "modern" approach.
This fixes SF bug #551285.
This commit is contained in:
Fred Drake 2002-05-02 16:05:27 +00:00
parent 9546772ccd
commit edb51bb7e8
1 changed files with 38 additions and 31 deletions
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69
Objects/rangeobject.c
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@ -264,34 +264,41 @@ range_tolist(rangeobject *self, PyObject *args)
} }
static PyObject * static PyObject *
range_getattr(rangeobject *r, char *name) range_get_stop(rangeobject *self, void *closure)
{
return PyInt_FromLong(self->start + (self->len * self->step));
}
static PyMethodDef range_methods[] = {
{"tolist", (PyCFunction)range_tolist, METH_NOARGS,
"tolist() -> list\n"
"Return a list object with the same values.\n"
"(This method is deprecated; use list() instead.)"},
{NULL, NULL}
};
static PyMemberDef range_members[] = {
{"step", T_LONG, offsetof(rangeobject, step), RO,
"Interval between indexes of the slice; also known as the 'stride'."},
{"start", T_LONG, offsetof(rangeobject, start), RO,
"First index of the slice."},
{NULL, 0, 0, 0}
};
static PyGetSetDef range_getsets[] = {
{"stop", (getter)range_get_stop, NULL,
""},
{NULL},
};
static PyObject *
range_getattro(rangeobject *self, PyObject *name)
{ {
PyObject *result; PyObject *result;
result = PyObject_GenericGetAttr((PyObject *)self, name);
static PyMethodDef range_methods[] = { if (result && PyInt_CheckExact(result)) {
{"tolist", (PyCFunction)range_tolist, METH_NOARGS, WARN("xrange object's 'start', 'stop' and 'step' "
"tolist() -> list\n" "attributes are deprecated");
"Return a list object with the same values.\n"
"(This method is deprecated; use list() instead.)"},
{NULL, NULL}
};
static struct memberlist range_members[] = {
{"step", T_LONG, offsetof(rangeobject, step), RO},
{"start", T_LONG, offsetof(rangeobject, start), RO},
{"stop", T_LONG, 0, RO},
{NULL, 0, 0, 0}
};
result = Py_FindMethod(range_methods, (PyObject *) r, name);
if (result == NULL) {
PyErr_Clear();
if (strcmp("stop", name) == 0)
result = PyInt_FromLong(r->start + (r->len * r->step));
else
result = PyMember_Get((char *)r, range_members, name);
if (result)
WARN("xrange object's 'start', 'stop' and 'step' "
"attributes are deprecated");
} }
return result; return result;
} }
@ -315,7 +322,7 @@ PyTypeObject PyRange_Type = {
0, /* Item size for varobject */ 0, /* Item size for varobject */
(destructor)range_dealloc, /*tp_dealloc*/ (destructor)range_dealloc, /*tp_dealloc*/
0, /*tp_print*/ 0, /*tp_print*/
(getattrfunc)range_getattr, /*tp_getattr*/ 0, /*tp_getattr*/
0, /*tp_setattr*/ 0, /*tp_setattr*/
(cmpfunc)range_compare, /*tp_compare*/ (cmpfunc)range_compare, /*tp_compare*/
(reprfunc)range_repr, /*tp_repr*/ (reprfunc)range_repr, /*tp_repr*/
@ -325,7 +332,7 @@ PyTypeObject PyRange_Type = {
0, /*tp_hash*/ 0, /*tp_hash*/
0, /*tp_call*/ 0, /*tp_call*/
0, /*tp_str*/ 0, /*tp_str*/
PyObject_GenericGetAttr, /*tp_getattro*/ (getattrofunc)range_getattro, /*tp_getattro*/
0, /*tp_setattro*/ 0, /*tp_setattro*/
0, /*tp_as_buffer*/ 0, /*tp_as_buffer*/
Py_TPFLAGS_DEFAULT, /*tp_flags*/ Py_TPFLAGS_DEFAULT, /*tp_flags*/
@ -336,9 +343,9 @@ PyTypeObject PyRange_Type = {
0, /* tp_weaklistoffset */ 0, /* tp_weaklistoffset */
0, /* tp_iter */ 0, /* tp_iter */
0, /* tp_iternext */ 0, /* tp_iternext */
0, /* tp_methods */ range_methods, /* tp_methods */
0, /* tp_members */ range_members, /* tp_members */
0, /* tp_getset */ range_getsets, /* tp_getset */
0, /* tp_base */ 0, /* tp_base */
0, /* tp_dict */ 0, /* tp_dict */
}; };