Box* objectNew(BoxedClass* cls, BoxedTuple* args) {
assert(isSubclass(cls->cls, type_cls));
assert(args->cls == tuple_cls);
if (args->elts.size() != 0) {
if (typeLookup(cls, "__init__", NULL, NULL) == NULL)
raiseExcHelper(TypeError, "object.__new__() takes no parameters");
}
assert(cls->instance_size >= sizeof(Box));
void* mem = rt_alloc(cls->instance_size);
Box* rtn = ::new (mem) Box(&object_flavor, cls);
initUserAttrs(rtn, cls);
return rtn;
}
extern "C" PyObject* PyObject_Init(PyObject* op, PyTypeObject* tp) {
RELEASE_ASSERT(op, "");
RELEASE_ASSERT(tp, "");
assert(gc::isValidGCObject(op));
assert(gc::isValidGCObject(tp));
Py_TYPE(op) = tp;
// I think CPython defers the dict creation (equivalent of our initUserAttrs) to the
// first time that an attribute gets set.
// Our HCAttrs object already includes this optimization of no-allocation-if-empty,
// but it's nice to initialize the hcls here so we don't have to check it on every getattr/setattr.
// TODO It does mean that anything not defering to this function will have to call
// initUserAttrs themselves, though.
initUserAttrs(op, tp);
return op;
}