--- a/langtools/src/share/classes/com/sun/tools/javac/tree/JCTree.java	Fri Oct 05 14:21:09 2012 -0700
+++ b/langtools/src/share/classes/com/sun/tools/javac/tree/JCTree.java	Sat Oct 06 10:35:38 2012 +0100
@@ -1810,11 +1810,46 @@
      */
     public static class JCMemberReference extends JCExpression implements MemberReferenceTree {
         public ReferenceMode mode;
+        public ReferenceKind kind;
         public Name name;
         public JCExpression expr;
         public List<JCExpression> typeargs;
         public Type targetType;
         public Symbol sym;
+        public Type varargsElement;
+
+        /**
+         * Javac-dependent classification for member references, based
+         * on relevant properties w.r.t. code-generation
+         */
+        public enum ReferenceKind {
+            /** super # instMethod */
+            SUPER(ReferenceMode.INVOKE, false),
+            /** Type # instMethod */
+            UNBOUND(ReferenceMode.INVOKE, true),
+            /** Type # staticMethod */
+            STATIC(ReferenceMode.INVOKE, false),
+            /** Expr # instMethod */
+            BOUND(ReferenceMode.INVOKE, false),
+            /** Expr # staticMethod */
+            STATIC_EVAL(ReferenceMode.INVOKE, false),
+            /** Inner # new */
+            IMPLICIT_INNER(ReferenceMode.NEW, false),
+            /** Toplevel # new */
+            TOPLEVEL(ReferenceMode.NEW, false);
+
+            ReferenceMode mode;
+            boolean unbound;
+
+            private ReferenceKind(ReferenceMode mode, boolean unbound) {
+                this.mode = mode;
+                this.unbound = unbound;
+            }
+
+            public boolean isUnbound() {
+                return unbound;
+            }
+        }
 
         protected JCMemberReference(ReferenceMode mode, Name name, JCExpression expr, List<JCExpression> typeargs) {
             this.mode = mode;
@@ -1843,6 +1878,9 @@
         public Tag getTag() {
             return REFERENCE;
         }
+        public boolean hasKind(ReferenceKind kind) {
+            return this.kind == kind;
+        }
     }
 
     /**