Propagated the fact that you get the Node object belonging to the annotation, and not the field/type/local/method it goes with, all the way, so that you can easily generate a warning on an annotation in a handler.

src/lombok/eclipse/EclipseAnnotationHandler.java

@@ -1,5 +1,5 @@
 package lombok.eclipse;
 
 public interface EclipseAnnotationHandler<T extends java.lang.annotation.Annotation> {
-	void handle(T annotation, org.eclipse.jdt.internal.compiler.ast.Annotation ast, EclipseAST.Node node);
+	void handle(T annotation, org.eclipse.jdt.internal.compiler.ast.Annotation ast, EclipseAST.Node annotationNode);
 }

src/lombok/eclipse/HandlerLibrary.java

@@ -45,8 +45,8 @@ public class HandlerLibrary {
 		@SuppressWarnings("unchecked")
 		public void handle(Object annInstance,
 				org.eclipse.jdt.internal.compiler.ast.Annotation annotation,
-				Node node) {
-			handler.handle((T) annInstance, annotation, node);
+				Node annotationNode) {
+			handler.handle((T) annInstance, annotation, annotationNode);
 		}
 	}
 	
@@ -287,19 +287,19 @@ public class HandlerLibrary {
 		return null;
 	}
 	
-	public void handle(CompilationUnitDeclaration ast, EclipseAST.Node node,
+	public void handle(CompilationUnitDeclaration ast, EclipseAST.Node annotationNode,
 			org.eclipse.jdt.internal.compiler.ast.Annotation annotation) {
-		TypeResolver resolver = new TypeResolver(typeLibrary, node.top());
+		TypeResolver resolver = new TypeResolver(typeLibrary, annotationNode.top());
 		TypeReference rawType = annotation.type;
 		if ( rawType == null ) return;
-		for ( String fqn : resolver.findTypeMatches(node, annotation.type) ) {
+		for ( String fqn : resolver.findTypeMatches(annotationNode, annotation.type) ) {
 			HandlerContainer<?> container = handlers.get(fqn);
 			if ( container == null ) continue;
 			try {
 				Object annInstance = createAnnotation(container.annotationClass, ast, annotation);
-				container.handle(annInstance, annotation, node);
-			} catch (EnumDecodeFail e) {
-				node.addError(e.getMessage(), e.pair.sourceStart, e.pair.sourceEnd);
+				container.handle(annInstance, annotation, annotationNode);
+			} catch ( EnumDecodeFail e ) {
+				annotationNode.addError(e.getMessage(), e.pair.sourceStart, e.pair.sourceEnd);
 			}
 		}
 	}

src/lombok/eclipse/TransformEclipseAST.java

@@ -113,22 +113,26 @@ public class TransformEclipseAST {
 	
 	private static class AnnotationVisitor extends EclipseASTAdapter {
 		@Override public void visitAnnotationOnField(FieldDeclaration field, Node annotationNode, Annotation annotation) {
-			handlers.handle((CompilationUnitDeclaration) annotationNode.top().node, annotationNode.up(), annotation);
+			if ( annotationNode.isHandled() ) return;
+			handlers.handle((CompilationUnitDeclaration) annotationNode.top().node, annotationNode, annotation);
 			annotationNode.setHandled();
 		}
 		
 		@Override public void visitAnnotationOnLocal(LocalDeclaration local, Node annotationNode, Annotation annotation) {
-			handlers.handle((CompilationUnitDeclaration) annotationNode.top().node, annotationNode.up(), annotation);
+			if ( annotationNode.isHandled() ) return;
+			handlers.handle((CompilationUnitDeclaration) annotationNode.top().node, annotationNode, annotation);
 			annotationNode.setHandled();
 		}
 		
 		@Override public void visitAnnotationOnMethod(AbstractMethodDeclaration method, Node annotationNode, Annotation annotation) {
-			handlers.handle((CompilationUnitDeclaration) annotationNode.top().node, annotationNode.up(), annotation);
+			if ( annotationNode.isHandled() ) return;
+			handlers.handle((CompilationUnitDeclaration) annotationNode.top().node, annotationNode, annotation);
 			annotationNode.setHandled();
 		}
 		
 		@Override public void visitAnnotationOnType(TypeDeclaration type, Node annotationNode, Annotation annotation) {
-			handlers.handle((CompilationUnitDeclaration) annotationNode.top().node, annotationNode.up(), annotation);
+			if ( annotationNode.isHandled() ) return;
+			handlers.handle((CompilationUnitDeclaration) annotationNode.top().node, annotationNode, annotation);
 			annotationNode.setHandled();
 		}
 	}

src/lombok/eclipse/handlers/HandleGetter_ecj.java

@@ -24,15 +24,23 @@ import org.mangosdk.spi.ProviderFor;
 
 @ProviderFor(EclipseAnnotationHandler.class)
 public class HandleGetter_ecj implements EclipseAnnotationHandler<Getter> {
-	@Override public void handle(Getter annotation, Annotation ast, Node node) {
-		FieldDeclaration field = (FieldDeclaration) node.getEclipseNode();
+	private void generateDuplicateGetterWarning(Node annotationNode, String methodName) {
+		annotationNode.addWarning(String.format("Not generating %s(): A method with that name already exists",  methodName));
+	}
+	
+	@Override public void handle(Getter annotation, Annotation ast, Node annotationNode) {
+		if ( !(annotationNode.up().getEclipseNode() instanceof FieldDeclaration) ) return;
+		FieldDeclaration field = (FieldDeclaration) annotationNode.up().getEclipseNode();
 		TypeReference fieldType = field.type;
 		String getterName = TransformationsUtil.toGetterName(
 				new String(field.name), nameEquals(fieldType.getTypeName(), "boolean"));
 		
-		TypeDeclaration parent = (TypeDeclaration) node.up().getEclipseNode();
+		TypeDeclaration parent = (TypeDeclaration) annotationNode.up().up().getEclipseNode();
 		if ( parent.methods != null ) for ( AbstractMethodDeclaration method : parent.methods ) {
-			if ( method.selector != null && new String(method.selector).equals(getterName) ) return;
+			if ( method.selector != null && new String(method.selector).equals(getterName) ) {
+				generateDuplicateGetterWarning(annotationNode, getterName);
+				return;
+			}
 		}
 		
 		MethodDeclaration method = new MethodDeclaration(parent.compilationResult);