/*
* Walk inside the fields and add every item which will be used for hashing
* into the list l
*
* Return 0 on success
*/
static int _array_descr_walk_fields(PyObject* fields, PyObject* l)
{
PyObject *key, *value, *foffset, *fdescr;
Py_ssize_t pos = 0;
int st;
while (PyDict_Next(fields, &pos, &key, &value)) {
/*
* For each field, add the key + descr + offset to l
*/
/* XXX: are those checks necessary ? */
if (!PyUString_Check(key)) {
PyErr_SetString(PyExc_SystemError,
"(Hash) key of dtype dict not a string ???");
return -1;
}
if (!PyTuple_Check(value)) {
PyErr_SetString(PyExc_SystemError,
"(Hash) value of dtype dict not a dtype ???");
return -1;
}
if (PyTuple_Size(value) < 2) {
PyErr_SetString(PyExc_SystemError,
"(Hash) Less than 2 items in dtype dict ???");
return -1;
}
Py_INCREF(key);
PyList_Append(l, key);
fdescr = PyTuple_GetItem(value, 0);
if (!PyArray_DescrCheck(fdescr)) {
PyErr_SetString(PyExc_SystemError,
"(Hash) First item in compound dtype tuple not a descr ???");
return -1;
}
else {
Py_INCREF(fdescr);
st = _array_descr_walk((PyArray_Descr*)fdescr, l);
Py_DECREF(fdescr);
if (st) {
return -1;
}
}
foffset = PyTuple_GetItem(value, 1);
if (!PyInt_Check(foffset)) {
PyErr_SetString(PyExc_SystemError,
"(Hash) Second item in compound dtype tuple not an int ???");
return -1;
}
else {
Py_INCREF(foffset);
PyList_Append(l, foffset);
}
}
return 0;
}
/*
* Walk inside the fields and add every item which will be used for hashing
* into the list l
*
* Return 0 on success
*/
static int _array_descr_walk_fields(PyObject *names, PyObject* fields, PyObject* l)
{
PyObject *key, *value, *foffset, *fdescr, *ftitle;
Py_ssize_t pos = 0;
int st;
if (!PyTuple_Check(names)) {
PyErr_SetString(PyExc_SystemError,
"(Hash) names is not a tuple ???");
return -1;
}
if (!PyDict_Check(fields)) {
PyErr_SetString(PyExc_SystemError,
"(Hash) fields is not a dict ???");
return -1;
}
for (pos = 0; pos < PyTuple_GET_SIZE(names); pos++) {
/*
* For each field, add the key + descr + offset to l
*/
key = PyTuple_GET_ITEM(names, pos);
value = PyDict_GetItem(fields, key);
/* XXX: are those checks necessary ? */
if (value == NULL) {
PyErr_SetString(PyExc_SystemError,
"(Hash) names and fields inconsistent ???");
return -1;
}
if (!PyUString_Check(key)) {
PyErr_SetString(PyExc_SystemError,
"(Hash) key of dtype dict not a string ???");
return -1;
}
if (!PyTuple_Check(value)) {
PyErr_SetString(PyExc_SystemError,
"(Hash) value of dtype dict not a dtype ???");
return -1;
}
if (PyTuple_GET_SIZE(value) < 2) {
PyErr_SetString(PyExc_SystemError,
"(Hash) Less than 2 items in dtype dict ???");
return -1;
}
PyList_Append(l, key);
fdescr = PyTuple_GET_ITEM(value, 0);
if (!PyArray_DescrCheck(fdescr)) {
PyErr_SetString(PyExc_SystemError,
"(Hash) First item in compound dtype tuple not a descr ???");
return -1;
}
else {
Py_INCREF(fdescr);
st = _array_descr_walk((PyArray_Descr*)fdescr, l);
Py_DECREF(fdescr);
if (st) {
return -1;
}
}
foffset = PyTuple_GET_ITEM(value, 1);
if (!PyInt_Check(foffset)) {
PyErr_SetString(PyExc_SystemError,
"(Hash) Second item in compound dtype tuple not an int ???");
return -1;
}
else {
PyList_Append(l, foffset);
}
if (PyTuple_GET_SIZE(value) > 2) {
ftitle = PyTuple_GET_ITEM(value, 2);
PyList_Append(l, ftitle);
}
}
return 0;
}
