void *object_getIndexedIvars(id obj)
{
CHECK_ARG(obj);
size_t size = classForObject(obj)->instance_size;
if ((0 == size) && class_isMetaClass(classForObject(obj)))
{
Class cls = (Class)obj;
if (objc_test_class_flag(cls, objc_class_flag_new_abi))
{
size = sizeof(struct objc_class);
}
else
{
size = sizeof(struct legacy_abi_objc_class);
}
}
return ((char*)obj) + size;
}
Class object_setClass(id obj, Class cls)
{
CHECK_ARG(obj);
// If this is a small object, then don't set its class.
uintptr_t addr = (uintptr_t)obj;
if (addr & 1) { return classForObject(obj); }
Class oldClass = obj->isa;
obj->isa = cls;
return oldClass;
}
Class object_getClass(id obj)
{
CHECK_ARG(obj);
Class isa = classForObject(obj);
while ((Nil != isa) && objc_test_class_flag(isa, objc_class_flag_hidden_class))
{
isa = isa->super_class;
}
return isa;
}
/**
* Calls C++ destructors in the correct order.
*/
PRIVATE void call_cxx_destruct(id obj)
{
static SEL cxx_destruct;
if (NULL == cxx_destruct)
{
cxx_destruct = sel_registerName(".cxx_destruct");
}
// Don't call object_getClass(), because we want to get hidden classes too
Class cls = classForObject(obj);
while (cls)
{
struct objc_slot *slot = objc_get_slot(cls, cxx_destruct);
cls = Nil;
if (NULL != slot)
{
cls = slot->owner->super_class;
slot->method(obj, cxx_destruct);
}
}
}
PRIVATE void call_cxx_construct(id obj)
{
call_cxx_construct_for_class(classForObject(obj), obj);
}
