public static ObjCClass toObjCClass(final long handle) {
long classPtr = handle;
ObjCClass c = ObjCObject.getPeerObject(classPtr);
if (c == null) {
c = getByNameNotLoaded(VM.newStringUTF(ObjCRuntime.class_getName(classPtr)));
}
while (c == null && classPtr != 0L) {
classPtr = ObjCRuntime.class_getSuperclass(classPtr);
c = ObjCObject.getPeerObject(classPtr);
if (c == null) {
c = getByNameNotLoaded(VM.newStringUTF(ObjCRuntime.class_getName(classPtr)));
}
}
if (c == null) {
String name = VM.newStringUTF(ObjCRuntime.class_getName(handle));
throw new ObjCClassNotFoundException(
"Could not find Java class corresponding to Objective-C class: " + name);
}
return c;
}
@SuppressWarnings("unchecked")
private static ObjCClass register(Class<? extends ObjCObject> type, String name) {
ObjCClass superclass = getByType((Class<? extends ObjCObject>) type.getSuperclass());
long handle =
ObjCRuntime.objc_allocateClassPair(superclass.getHandle(), VM.getStringUTFChars(name), 0);
if (handle == 0L) {
throw new ObjCClassNotFoundException(
"Failed to create custom Objective-C class for Java class: " + type);
}
for (Entry<String, Method> entry : getCallbacks(type).entrySet()) {
String selName = entry.getKey();
Method method = entry.getValue();
Selector selector = Selector.register(selName);
String encoding = null;
TypeEncoding typeEncoding = method.getAnnotation(TypeEncoding.class);
if (typeEncoding != null) {
encoding = typeEncoding.value();
} else {
long methodPtr =
ObjCRuntime.class_getInstanceMethod(superclass.getHandle(), selector.getHandle());
if (methodPtr != 0L) {
long encodingPtr = ObjCRuntime.method_getTypeEncoding(methodPtr);
if (encodingPtr != 0L) {
encoding = VM.newStringUTF(encodingPtr);
}
}
}
long impl = VM.getCallbackMethodImpl(method);
if (!ObjCRuntime.class_addMethod(
handle,
selector.getHandle(),
impl,
encoding != null ? VM.getStringUTFChars(encoding) : 0L)) {
throw new ObjCClassNotFoundException(
"Failed to add method "
+ selName
+ " to custom Objective-C class for Java class: "
+ type);
}
}
ObjCRuntime.objc_registerClassPair(handle);
return new ObjCClass(handle, type, name, true);
}