NUITKA_MAY_BE_UNUSED static bool STRING_RESIZE( PyObject **value, Py_ssize_t newsize )
{
PyStringObject *sv;
_Py_DEC_REFTOTAL;
_Py_ForgetReference( *value );
*value = (PyObject *)PyObject_REALLOC( (char *)*value, PyStringObject_SIZE + newsize );
if (unlikely( *value == NULL ))
{
PyErr_NoMemory();
return false;
}
_Py_NewReference( *value );
sv = (PyStringObject *)*value;
Py_SIZE( sv ) = newsize;
sv->ob_sval[newsize] = '\0';
sv->ob_shash = -1;
return true;
}
void
_Py_Dealloc(PyObject *op)
{
destructor dealloc = op->ob_type->tp_dealloc;
_Py_ForgetReference(op);
(*dealloc)(op);
}
void
PyStructSequence_InitType(PyTypeObject *type, PyStructSequence_Desc *desc)
{
PyObject *dict;
PyMemberDef* members;
int n_members, n_unnamed_members, i, k;
#ifdef Py_TRACE_REFS
/* if the type object was chained, unchain it first
before overwriting its storage */
if (type->_ob_next) {
_Py_ForgetReference((PyObject*)type);
}
#endif
n_unnamed_members = 0;
for (i = 0; desc->fields[i].name != NULL; ++i)
if (desc->fields[i].name == PyStructSequence_UnnamedField)
n_unnamed_members++;
n_members = i;
memcpy(type, &_struct_sequence_template, sizeof(PyTypeObject));
type->tp_name = desc->name;
type->tp_doc = desc->doc;
type->tp_basicsize = sizeof(PyStructSequence)+
sizeof(PyObject*)*(n_members-1);
type->tp_itemsize = 0;
members = PyMem_NEW(PyMemberDef, n_members-n_unnamed_members+1);
if (members == NULL)
return;
for (i = k = 0; i < n_members; ++i) {
if (desc->fields[i].name == PyStructSequence_UnnamedField)
continue;
members[k].name = desc->fields[i].name;
members[k].type = T_OBJECT;
members[k].offset = offsetof(PyStructSequence, ob_item)
+ i * sizeof(PyObject*);
members[k].flags = READONLY;
members[k].doc = desc->fields[i].doc;
k++;
}
members[k].name = NULL;
type->tp_members = members;
if (PyType_Ready(type) < 0)
return;
Py_INCREF(type);
dict = type->tp_dict;
PyDict_SetItemString(dict, visible_length_key,
PyInt_FromLong((long) desc->n_in_sequence));
PyDict_SetItemString(dict, real_length_key,
PyInt_FromLong((long) n_members));
PyDict_SetItemString(dict, unnamed_fields_key,
PyInt_FromLong((long) n_unnamed_members));
}
int
_PyTuple_Resize(PyObject **pv, Py_ssize_t newsize)
{
PyTupleObject *v;
PyTupleObject *sv;
Py_ssize_t i;
Py_ssize_t oldsize;
v = (PyTupleObject *) *pv;
if (v == NULL || Py_TYPE(v) != &PyTuple_Type ||
(Py_SIZE(v) != 0 && Py_REFCNT(v) != 1)) {
*pv = 0;
Py_XDECREF(v);
PyErr_BadInternalCall();
return -1;
}
oldsize = Py_SIZE(v);
if (oldsize == newsize)
return 0;
if (oldsize == 0) {
/* Empty tuples are often shared, so we should never
resize them in-place even if we do own the only
(current) reference */
Py_DECREF(v);
*pv = PyTuple_New(newsize);
return *pv == NULL ? -1 : 0;
}
/* XXX UNREF/NEWREF interface should be more symmetrical */
_Py_DEC_REFTOTAL;
if (_PyObject_GC_IS_TRACKED(v))
_PyObject_GC_UNTRACK(v);
_Py_ForgetReference((PyObject *) v);
/* DECREF items deleted by shrinkage */
for (i = newsize; i < oldsize; i++) {
Py_XDECREF(v->ob_item[i]);
v->ob_item[i] = NULL;
}
sv = PyObject_GC_Resize(PyTupleObject, v, newsize);
if (sv == NULL) {
*pv = NULL;
PyObject_GC_Del(v);
return -1;
}
_Py_NewReference((PyObject *) sv);
/* Zero out items added by growing */
if (newsize > oldsize)
memset(&sv->ob_item[oldsize], 0,
sizeof(*sv->ob_item) * (newsize - oldsize));
*pv = (PyObject *) sv;
_PyObject_GC_TRACK(sv);
return 0;
}
void
PyStructSequence_InitType(PyTypeObject *type, PyStructSequence_Desc *desc)
{
PyObject *dict;
PyMemberDef* members;
int n_members, n_unnamed_members, i, k;
#ifdef Py_TRACE_REFS
/* if the type object was chained, unchain it first
before overwriting its storage */
if (type->ob_base.ob_base._ob_next) {
_Py_ForgetReference((PyObject*)type);
}
#endif
n_unnamed_members = 0;
for (i = 0; desc->fields[i].name != NULL; ++i)
if (desc->fields[i].name == PyStructSequence_UnnamedField)
n_unnamed_members++;
n_members = i;
memcpy(type, &_struct_sequence_template, sizeof(PyTypeObject));
type->tp_base = &PyTuple_Type;
type->tp_name = desc->name;
type->tp_doc = desc->doc;
members = PyMem_NEW(PyMemberDef, n_members-n_unnamed_members+1);
if (members == NULL)
return;
for (i = k = 0; i < n_members; ++i) {
if (desc->fields[i].name == PyStructSequence_UnnamedField)
continue;
members[k].name = desc->fields[i].name;
members[k].type = T_OBJECT;
members[k].offset = offsetof(PyStructSequence, ob_item)
+ i * sizeof(PyObject*);
members[k].flags = READONLY;
members[k].doc = desc->fields[i].doc;
k++;
}
members[k].name = NULL;
type->tp_members = members;
if (PyType_Ready(type) < 0)
return;
Py_INCREF(type);
dict = type->tp_dict;
#define SET_DICT_FROM_INT(key, value) \
do { \
PyObject *v = PyLong_FromLong((long) value); \
if (v != NULL) { \
PyDict_SetItemString(dict, key, v); \
Py_DECREF(v); \
} \
} while (0)
SET_DICT_FROM_INT(visible_length_key, desc->n_in_sequence);
SET_DICT_FROM_INT(real_length_key, n_members);
SET_DICT_FROM_INT(unnamed_fields_key, n_unnamed_members);
}
