@Override
public boolean handle(
AnnotationValues<Synchronized> annotation, JCAnnotation ast, Node annotationNode) {
Node methodNode = annotationNode.up();
if (methodNode == null
|| methodNode.getKind() != Kind.METHOD
|| !(methodNode.get() instanceof JCMethodDecl)) {
annotationNode.addError("@Synchronized is legal only on methods.");
return true;
}
JCMethodDecl method = (JCMethodDecl) methodNode.get();
if ((method.mods.flags & Flags.ABSTRACT) != 0) {
annotationNode.addError("@Synchronized is legal only on concrete methods.");
return true;
}
boolean isStatic = (method.mods.flags & Flags.STATIC) != 0;
String lockName = annotation.getInstance().value();
boolean autoMake = false;
if (lockName.length() == 0) {
autoMake = true;
lockName = isStatic ? STATIC_LOCK_NAME : INSTANCE_LOCK_NAME;
}
TreeMaker maker = methodNode.getTreeMaker();
if (fieldExists(lockName, methodNode) == MemberExistsResult.NOT_EXISTS) {
if (!autoMake) {
annotationNode.addError("The field " + new String(lockName) + " does not exist.");
return true;
}
JCExpression objectType = chainDots(maker, methodNode, "java", "lang", "Object");
// We use 'new Object[0];' because quite unlike 'new Object();', empty arrays *ARE*
// serializable!
JCNewArray newObjectArray =
maker.NewArray(
chainDots(maker, methodNode, "java", "lang", "Object"),
List.<JCExpression>of(maker.Literal(TypeTags.INT, 0)),
null);
JCVariableDecl fieldDecl =
maker.VarDef(
maker.Modifiers(Flags.FINAL | (isStatic ? Flags.STATIC : 0)),
methodNode.toName(lockName),
objectType,
newObjectArray);
injectField(methodNode.up(), fieldDecl);
}
if (method.body == null) return false;
JCExpression lockNode = maker.Ident(methodNode.toName(lockName));
method.body = maker.Block(0, List.<JCStatement>of(maker.Synchronized(lockNode, method.body)));
methodNode.rebuild();
return true;
}
@Override
public void visitMethodDef(JCMethodDecl tree) {
super.visitMethodDef(tree);
MethodSymbol meth = tree.sym;
if (meth == null || meth.kind != Kinds.MTH) return;
TreePath treePath = docenv.getTreePath(env.toplevel, env.enclClass, tree);
if (meth.isConstructor()) docenv.makeConstructorDoc(meth, treePath);
else if (isAnnotationTypeElement(meth)) docenv.makeAnnotationTypeElementDoc(meth, treePath);
else docenv.makeMethodDoc(meth, treePath);
// release resources
tree.body = null;
}