BOOL class_isKindOfClass(Class cls1, Class cls2) {
objc_initialize_class(cls1);
objc_initialize_class(cls2);
Class iter;
for (iter = cls1; iter != Nil; iter = iter->superclass)
if (iter == cls2)
return YES;
return NO;
}
unsigned long
class_getInstanceSize(Class cls)
{
objc_initialize_class(cls);
return cls->instance_size;
}
Method class_getInstanceMethod(Class cls, SEL name) {
objc_global_mutex_lock();
objc_initialize_class(cls);
Method m = NULL;
_class_lookupMethodImplementation(cls, name, &m);
objc_global_mutex_unlock();
return m;
}
Property class_getProperty(Class cls, const char* name) {
if (cls && name) {
objc_initialize_class(cls);
for (struct objc_property_list* propList = cls->properties; propList != NULL; propList = propList->next) {
for (unsigned i = 0; i < propList->count; ++i) {
Property currentProperty = &propList->properties[i];
if (strcmp(currentProperty->name, name) == 0) {
return currentProperty;
}
}
}
}
return NULL;
}
Ivar class_getInstanceVariable(Class cls, const char* name) {
objc_initialize_class(cls);
struct objc_ivar_list* list = (struct objc_ivar_list*)cls->ivars;
if (list) {
for (unsigned i = 0; i < list->count; i++) {
struct objc_ivar* curIvar = &list->ivars[i];
if (strcmp(curIvar->name, name) == 0) {
return curIvar;
}
}
}
return NULL;
}
Class class_getSuperclass(Class cls) {
objc_initialize_class(cls);
return cls->superclass;
}
