static PyObject* QtGuiObject_alloc(PyTypeObject *type, Py_ssize_t nitems) {
PyObject *obj;
const size_t size = _PyObject_VAR_SIZE(type, nitems+1);
/* note that we need to add one, for the sentinel */
if (PyType_IS_GC(type))
obj = _PyObject_GC_Malloc(size);
else
obj = (PyObject *)PyObject_MALLOC(size);
if (obj == NULL)
return PyErr_NoMemory();
// This is why we need this custom alloc: To call the C++ constructor.
memset(obj, '\0', size);
new ((PyQtGuiObject*) obj) PyQtGuiObject();
if (type->tp_flags & Py_TPFLAGS_HEAPTYPE)
Py_INCREF(type);
if (type->tp_itemsize == 0)
PyObject_INIT(obj, type);
else
(void) PyObject_INIT_VAR((PyVarObject *)obj, type, nitems);
if (PyType_IS_GC(type))
_PyObject_GC_TRACK(obj);
return obj;
}
PyVarObject *
_PyObject_GC_NewVar(PyTypeObject *tp, int nitems)
{
const size_t size = _PyObject_VAR_SIZE(tp, nitems);
PyVarObject *op = (PyVarObject *) _PyObject_GC_Malloc(size);
if (op != NULL)
op = PyObject_INIT_VAR(op, tp, nitems);
return op;
}
PyVarObject *
_PyObject_NewVar(PyTypeObject *tp, int nitems)
{
PyVarObject *op;
const size_t size = _PyObject_VAR_SIZE(tp, nitems);
op = (PyVarObject *) PyObject_MALLOC(size);
if (op == NULL)
return (PyVarObject *)PyErr_NoMemory();
return PyObject_INIT_VAR(op, tp, nitems);
}
/* Efficiently allocate a python string of a fixed size containing uninitialized memory */
static PyObject * lowLevelStringAlloc(Py_ssize_t size)
{
PyStringObject * op = (PyStringObject *)PyObject_MALLOC(sizeof(PyStringObject) + size);
if (op) {
PyObject_INIT_VAR(op, &PyString_Type, size);
op->ob_shash = -1;
op->ob_sstate = SSTATE_NOT_INTERNED;
}
return (PyObject *) op;
}
PyObject* string_repeat(register PyStringObject *a, register Py_ssize_t n)
{
register Py_ssize_t i;
register Py_ssize_t j;
register Py_ssize_t size;
register PyStringObject *op;
size_t nbytes;
if (n < 0)
n = 0;
/* watch out for overflows: the size can overflow int,
* and the # of bytes needed can overflow size_t
*/
size = Py_SIZE(a) * n;
if (n && size / n != Py_SIZE(a)) {
PyErr_SetString(PyExc_OverflowError,
"repeated string is too long");
return NULL;
}
if (size == Py_SIZE(a) && PyString_CheckExact(a)) {
Py_INCREF(a);
return (PyObject *)a;
}
nbytes = (size_t)size;
if (nbytes + PyStringObject_SIZE <= nbytes) {
PyErr_SetString(PyExc_OverflowError,
"repeated string is too long");
return NULL;
}
op = (PyStringObject *)PyObject_MALLOC(PyStringObject_SIZE + nbytes);
if (op == NULL)
return PyErr_NoMemory();
PyObject_INIT_VAR(op, &PyString_Type, size);
op->ob_shash = -1;
op->ob_sstate = SSTATE_NOT_INTERNED;
op->ob_sval[size] = '\0';
if (Py_SIZE(a) == 1 && n > 0) {
memset(op->ob_sval, a->ob_sval[0] , n);
return (PyObject *) op;
}
i = 0;
if (i < size) {
Py_MEMCPY(op->ob_sval, a->ob_sval, Py_SIZE(a));
i = Py_SIZE(a);
}
while (i < size) {
j = (i <= size-i) ? i : size-i;
Py_MEMCPY(op->ob_sval+i, op->ob_sval, j);
i += j;
}
return (PyObject *) op;
}
PyObject *
PyString_FromStringAndSize(const char *str, int size)
{
LOG("> PyString_FromStringAndSize\n"); {
register PyStringObject *op;
if (size == 0 && (op = nullstring) != NULL) {
Py_INCREF(op);
LOG("< PyString_FromStringAndSize\n");
return (PyObject *)op;
}
if (size == 1 && str != NULL &&
(op = characters[*str & UCHAR_MAX]) != NULL)
{
Py_INCREF(op);
LOG("< PyString_FromStringAndSize\n");
return (PyObject *)op;
}
/* Inline PyObject_NewVar */
op = (PyStringObject *)
PyObject_MALLOC(sizeof(PyStringObject) + size * sizeof(char));
if (op == NULL)
return NULL; /* NO MEM */
PyObject_INIT_VAR(op, &PyString_Type, size);
op->ob_shash = -1;
op->ob_sstate = SSTATE_NOT_INTERNED;
if (str != NULL)
memcpy(op->ob_sval, str, size);
op->ob_sval[size] = '\0';
/* share short strings */
if (size == 0) {
PyObject *t = (PyObject *)op;
PyString_InternInPlace(&t);
op = (PyStringObject *)t;
nullstring = op;
Py_INCREF(op);
} else if (size == 1 && str != NULL) {
PyObject *t = (PyObject *)op;
PyString_InternInPlace(&t);
op = (PyStringObject *)t;
characters[*str & UCHAR_MAX] = op;
Py_INCREF(op);
}
LOG("< PyString_FromStringAndSize\n");
return (PyObject *) op;
}}
PyObject *
PyString_FromString(const char *str)
{
register size_t size;
register PyStringObject *op;
size = strlen(str);
if (size == 0 && (op = nullstring) != NULL) {
Py_INCREF(op);
return (PyObject *)op;
}
if (size == 1 && (op = characters[*str & UCHAR_MAX]) != NULL) {
Py_INCREF(op);
return (PyObject *)op;
}
op = (PyStringObject *) PyObject_MALLOC(sizeof(PyStringObject) + size * sizeof(char));
if (op == NULL)
Py_FatalError("no memory");
PyObject_INIT_VAR(op, &PyString_Type, size);
op->ob_shash = -1;
op->ob_sstate = SSTATE_NOT_INTERNED;
memcpy(op->ob_sval, str, size+1);
if (size == 0) {
PyObject *t = (PyObject *)op;
PyString_InternInPlace(&t);
op = (PyStringObject *)t;
nullstring = op;
Py_INCREF(op);
} else if (size == 1) {
PyObject *t = (PyObject *)op;
PyString_InternInPlace(&t);
op = (PyStringObject *)t;
characters[*str & UCHAR_MAX] = op;
Py_INCREF(op);
}
return (PyObject *) op;
}
