/* XXX(nnorwitz): should we error check if the user passes any empty ranges? range(-10) range(0, -5) range(0, 5, -1) */ static PyObject * range_new(PyTypeObject *type, PyObject *args, PyObject *kw) { rangeobject *obj; PyObject *start = NULL, *stop = NULL, *step = NULL; if (!_PyArg_NoKeywords("range()", kw)) return NULL; if (PyTuple_Size(args) <= 1) { if (!PyArg_UnpackTuple(args, "range", 1, 1, &stop)) return NULL; stop = PyNumber_Index(stop); if (!stop) return NULL; start = PyLong_FromLong(0); if (!start) { Py_DECREF(stop); return NULL; } step = PyLong_FromLong(1); if (!step) { Py_DECREF(stop); Py_DECREF(start); return NULL; } } else { if (!PyArg_UnpackTuple(args, "range", 2, 3, &start, &stop, &step)) return NULL; /* Convert borrowed refs to owned refs */ start = PyNumber_Index(start); if (!start) return NULL; stop = PyNumber_Index(stop); if (!stop) { Py_DECREF(start); return NULL; } step = validate_step(step); /* Caution, this can clear exceptions */ if (!step) { Py_DECREF(start); Py_DECREF(stop); return NULL; } } obj = make_range_object(type, start, stop, step); if (obj != NULL) return (PyObject *) obj; /* Failed to create object, release attributes */ Py_XDECREF(start); Py_XDECREF(stop); Py_XDECREF(step); return NULL; }
/* XXX(nnorwitz): should we error check if the user passes any empty ranges? range(-10) range(0, -5) range(0, 5, -1) */ static PyObject * range_new(PyTypeObject *type, PyObject *args, PyObject *kw) { rangeobject *obj = NULL; PyObject *start = NULL, *stop = NULL, *step = NULL; if (!_PyArg_NoKeywords("range()", kw)) return NULL; if (PyTuple_Size(args) <= 1) { if (!PyArg_UnpackTuple(args, "range", 1, 1, &stop)) return NULL; stop = PyNumber_Index(stop); if (!stop) return NULL; start = PyLong_FromLong(0); if (!start) { Py_DECREF(stop); return NULL; } step = PyLong_FromLong(1); if (!step) { Py_DECREF(stop); Py_DECREF(start); return NULL; } } else { if (!PyArg_UnpackTuple(args, "range", 2, 3, &start, &stop, &step)) return NULL; /* Convert borrowed refs to owned refs */ start = PyNumber_Index(start); if (!start) return NULL; stop = PyNumber_Index(stop); if (!stop) { Py_DECREF(start); return NULL; } step = validate_step(step); /* Caution, this can clear exceptions */ if (!step) { Py_DECREF(start); Py_DECREF(stop); return NULL; } } obj = PyObject_New(rangeobject, &PyRange_Type); if (obj == NULL) goto Fail; obj->start = start; obj->stop = stop; obj->step = step; return (PyObject *) obj; Fail: Py_XDECREF(start); Py_XDECREF(stop); Py_XDECREF(step); return NULL; }