@Override
public void handle(
final AnnotationValues<ListenerSupport> annotation,
final JCAnnotation source,
final JavacNode annotationNode) {
deleteAnnotationIfNeccessary(annotationNode, ListenerSupport.class);
JavacType type = JavacType.typeOf(annotationNode, source);
if (type.isAnnotation() || type.isInterface()) {
annotationNode.addError(canBeUsedOnClassAndEnumOnly(ListenerSupport.class));
return;
}
List<Object> listenerInterfaces = annotation.getActualExpressions("value");
if (listenerInterfaces.isEmpty()) {
annotationNode.addError(
String.format(
"@%s has no effect since no interface types were specified.",
ListenerSupport.class.getName()));
return;
}
List<TypeSymbol> resolvedInterfaces =
resolveInterfaces(annotationNode, ListenerSupport.class, listenerInterfaces);
for (TypeSymbol interfaze : resolvedInterfaces) {
handler.addListenerField(type, interfaze);
handler.addAddListenerMethod(type, interfaze);
handler.addRemoveListenerMethod(type, interfaze);
addFireListenerMethods(type, interfaze);
}
type.editor().rebuild();
}
static List<Extension> getApplicableExtensionMethods(
EclipseNode typeNode, Annotation ann, TypeBinding receiverType) {
List<Extension> extensions = new ArrayList<Extension>();
if ((typeNode != null) && (ann != null) && (receiverType != null)) {
BlockScope blockScope = ((TypeDeclaration) typeNode.get()).initializerScope;
EclipseNode annotationNode = typeNode.getNodeFor(ann);
AnnotationValues<ExtensionMethod> annotation =
createAnnotation(ExtensionMethod.class, annotationNode);
boolean suppressBaseMethods = false;
try {
suppressBaseMethods = annotation.getInstance().suppressBaseMethods();
} catch (AnnotationValueDecodeFail fail) {
fail.owner.setError(fail.getMessage(), fail.idx);
}
for (Object extensionMethodProvider : annotation.getActualExpressions("value")) {
if (extensionMethodProvider instanceof ClassLiteralAccess) {
TypeBinding binding =
((ClassLiteralAccess) extensionMethodProvider).type.resolveType(blockScope);
if (binding == null) continue;
if (!binding.isClass() && !binding.isEnum()) continue;
Extension e = new Extension();
e.extensionMethods =
getApplicableExtensionMethodsDefinedInProvider(
typeNode, (ReferenceBinding) binding, receiverType);
e.suppressBaseMethods = suppressBaseMethods;
extensions.add(e);
}
}
}
return extensions;
}