Made lombok more stable in netbeans based on some smart observations by Jan Lahoda of team Netbeans.

doc/changelog.markdown

@@ -1,8 +1,9 @@
 Lombok Changelog
 ----------------
 
-### v0.11.3 Edge
+### v0.11.3 (Edgy Guinea Pig)
 * BUGFIX: Eclipse would throw an OOME. [Issue #390](http://code.google.com/p/projectlombok/issues/detail?id=390)
+* BUGFIX: [Netbeans] `@Cleanup` and `@Synchronized` cause far fewer issues in the netbeans editor. [Issue #393](http://code.google.com/p/projectlombok/issues/detail?id=393)
 
 
 ### v0.11.2 "Dashing Kakapo" (July 3rd, 2012)

src/core/lombok/javac/handlers/HandleCleanup.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2009-2011 The Project Lombok Authors.
+ * Copyright (C) 2009-2012 The Project Lombok Authors.
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -23,8 +23,8 @@ package lombok.javac.handlers;
 
 import static lombok.javac.handlers.JavacHandlerUtil.*;
 import lombok.Cleanup;
-import lombok.core.AnnotationValues;
 import lombok.core.AST.Kind;
+import lombok.core.AnnotationValues;
 import lombok.javac.Javac;
 import lombok.javac.JavacAnnotationHandler;
 import lombok.javac.JavacNode;
@@ -33,7 +33,6 @@ import org.mangosdk.spi.ProviderFor;
 
 import com.sun.tools.javac.code.TypeTags;
 import com.sun.tools.javac.tree.JCTree;
-import com.sun.tools.javac.tree.TreeMaker;
 import com.sun.tools.javac.tree.JCTree.JCAnnotation;
 import com.sun.tools.javac.tree.JCTree.JCAssign;
 import com.sun.tools.javac.tree.JCTree.JCBinary;
@@ -50,6 +49,7 @@ import com.sun.tools.javac.tree.JCTree.JCMethodInvocation;
 import com.sun.tools.javac.tree.JCTree.JCStatement;
 import com.sun.tools.javac.tree.JCTree.JCTypeCast;
 import com.sun.tools.javac.tree.JCTree.JCVariableDecl;
+import com.sun.tools.javac.tree.TreeMaker;
 import com.sun.tools.javac.util.List;
 import com.sun.tools.javac.util.ListBuffer;
 import com.sun.tools.javac.util.Name;
@@ -60,6 +60,8 @@ import com.sun.tools.javac.util.Name;
 @ProviderFor(JavacAnnotationHandler.class)
 public class HandleCleanup extends JavacAnnotationHandler<Cleanup> {
 	@Override public void handle(AnnotationValues<Cleanup> annotation, JCAnnotation ast, JavacNode annotationNode) {
+		if (inNetbeansEditor(annotationNode)) return;
+		
 		deleteAnnotationIfNeccessary(annotationNode, Cleanup.class);
 		String cleanupName = annotation.getInstance().value();
 		if (cleanupName.length() == 0) {

src/core/lombok/javac/handlers/HandleSynchronized.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (C) 2009-2011 The Project Lombok Authors.
+ * Copyright (C) 2009-2012 The Project Lombok Authors.
  * 
  * Permission is hereby granted, free of charge, to any person obtaining a copy
  * of this software and associated documentation files (the "Software"), to deal
@@ -52,6 +52,8 @@ public class HandleSynchronized extends JavacAnnotationHandler<Synchronized> {
 	private static final String STATIC_LOCK_NAME = "$LOCK";
 	
 	@Override public void handle(AnnotationValues<Synchronized> annotation, JCAnnotation ast, JavacNode annotationNode) {
+		if (inNetbeansEditor(annotationNode)) return;
+		
 		deleteAnnotationIfNeccessary(annotationNode, Synchronized.class);
 		JavacNode methodNode = annotationNode.up();
 		

src/core/lombok/javac/handlers/JavacHandlerUtil.java

@@ -68,6 +68,7 @@ import com.sun.tools.javac.util.JCDiagnostic.DiagnosticPosition;
 import com.sun.tools.javac.util.List;
 import com.sun.tools.javac.util.ListBuffer;
 import com.sun.tools.javac.util.Name;
+import com.sun.tools.javac.util.Options;
 
 /**
  * Container for static utility methods useful to handlers written for javac.
@@ -92,6 +93,16 @@ public class JavacHandlerUtil {
 	
 	private static Map<JCTree, WeakReference<JCTree>> generatedNodes = new WeakHashMap<JCTree, WeakReference<JCTree>>();
 	
+	/**
+	 * Contributed by Jan Lahoda; many lombok transformations should not be run (or a lite version should be run) when the netbeans editor
+	 * is running javac on the open source file to find inline errors and such. As class files are compiled separately this does not affect
+	 * actual runtime behaviour or file output of the netbeans IDE.
+	 */
+	public static boolean inNetbeansEditor(JavacNode node) {
+		Options options = Options.instance(node.getContext());
+		return (options.keySet().contains("ide") && !options.keySet().contains("backgroundCompilation"));
+	}
+	
 	public static JCTree getGeneratedBy(JCTree node) {
 		synchronized (generatedNodes) {
 			WeakReference<JCTree> ref = generatedNodes.get(node);