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convert some more special methods to use _PyObject_LookupSpecial

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Benjamin Peterson 2009-05-09 16:36:39 +00:00
parent f9b01fe692
commit af1692a266
3 changed files with 30 additions and 28 deletions
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21
Objects/abstract.c
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@ -93,7 +93,7 @@ Py_ssize_t
_PyObject_LengthHint(PyObject *o, Py_ssize_t defaultvalue)
{
static PyObject *hintstrobj = NULL;
PyObject *ro;
PyObject *ro, *hintmeth;
Py_ssize_t rv;
/* try o.__len__() */
@ -107,20 +107,15 @@ _PyObject_LengthHint(PyObject *o, Py_ssize_t defaultvalue)
PyErr_Clear();
}
/* cache a hashed version of the attribute string */
if (hintstrobj == NULL) {
hintstrobj = PyString_InternFromString("__length_hint__");
if (hintstrobj == NULL)
return -1;
}
/* try o.__length_hint__() */
ro = PyObject_CallMethodObjArgs(o, hintstrobj, NULL);
hintmeth = _PyObject_LookupSpecial(o, "__length_hint__", &hintstrobj);
if (hintmeth == NULL)
return defaultvalue;
ro = PyObject_CallFunctionObjArgs(hintmeth, NULL);
Py_DECREF(hintmeth);
if (ro == NULL) {
if (!PyErr_ExceptionMatches(PyExc_TypeError) &&
!PyErr_ExceptionMatches(PyExc_AttributeError))
return -1;
PyErr_Clear();
if (!PyErr_ExceptionMatches(PyExc_TypeError))
return -1;
return defaultvalue;
}
rv = PyLong_Check(ro) ? PyLong_AsSsize_t(ro) : defaultvalue;