PyObject *
PyStructSequence_New(PyTypeObject *type)
{
PyStructSequence *obj;
Py_ssize_t size = REAL_SIZE_TP(type), i;
obj = PyObject_GC_NewVar(PyStructSequence, type, size);
if (obj == NULL)
return NULL;
/* Hack the size of the variable object, so invisible fields don't appear
to Python code. */
Py_SIZE(obj) = VISIBLE_SIZE_TP(type);
for (i = 0; i < size; i++)
obj->ob_item[i] = NULL;
return (PyObject*)obj;
}
static PyObject *
structseq_new(PyTypeObject *type, PyObject *args, PyObject *kwds)
{
PyObject *arg = NULL;
PyObject *dict = NULL;
PyObject *ob;
PyStructSequence *res = NULL;
Py_ssize_t len, min_len, max_len, i, n_unnamed_fields;
static char *kwlist[] = {"sequence", "dict", 0};
if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|O:structseq",
kwlist, &arg, &dict))
return NULL;
arg = PySequence_Fast(arg, "constructor requires a sequence");
if (!arg) {
return NULL;
}
if (dict && !PyDict_Check(dict)) {
PyErr_Format(PyExc_TypeError,
"%.500s() takes a dict as second arg, if any",
type->tp_name);
Py_DECREF(arg);
return NULL;
}
len = PySequence_Fast_GET_SIZE(arg);
min_len = VISIBLE_SIZE_TP(type);
max_len = REAL_SIZE_TP(type);
n_unnamed_fields = UNNAMED_FIELDS_TP(type);
if (min_len != max_len) {
if (len < min_len) {
PyErr_Format(PyExc_TypeError,
"%.500s() takes an at least %zd-sequence (%zd-sequence given)",
type->tp_name, min_len, len);
Py_DECREF(arg);
return NULL;
}
if (len > max_len) {
PyErr_Format(PyExc_TypeError,
"%.500s() takes an at most %zd-sequence (%zd-sequence given)",
type->tp_name, max_len, len);
Py_DECREF(arg);
return NULL;
}
}
else {
if (len != min_len) {
PyErr_Format(PyExc_TypeError,
"%.500s() takes a %zd-sequence (%zd-sequence given)",
type->tp_name, min_len, len);
Py_DECREF(arg);
return NULL;
}
}
res = (PyStructSequence*) PyStructSequence_New(type);
if (res == NULL) {
return NULL;
}
for (i = 0; i < len; ++i) {
PyObject *v = PySequence_Fast_GET_ITEM(arg, i);
Py_INCREF(v);
res->ob_item[i] = v;
}
for (; i < max_len; ++i) {
if (dict && (ob = PyDict_GetItemString(
dict, type->tp_members[i-n_unnamed_fields].name))) {
}
else {
ob = Py_None;
}
Py_INCREF(ob);
res->ob_item[i] = ob;
}
Py_DECREF(arg);
return (PyObject*) res;
}