Implement complex super assignment.

sdk/lib/_internal/compiler/implementation/elements/modelx.dart

Index: sdk/lib/_internal/compiler/implementation/elements/modelx.dart
===================================================================
--- sdk/lib/_internal/compiler/implementation/elements/modelx.dart	(revision 19450)
+++ sdk/lib/_internal/compiler/implementation/elements/modelx.dart	(working copy)
@@ -1522,10 +1522,18 @@
    * origin and the patch class are returned.
    */
   Element lookupSelector(Selector selector) {
+    return internalLookupSelector(selector, false);
+  }
+
+  Element lookupSuperSelector(Selector selector) {
+    return internalLookupSelector(selector, true);
+  }
+  
+  Element internalLookupSelector(Selector selector, bool isSuperLookup) {
     SourceString name = selector.name;
     bool isPrivate = name.isPrivate();
     LibraryElement library = selector.library;
-    for (ClassElement current = this;
+    for (ClassElement current = isSuperLookup ? getEnclosingClass() : this;

[kasperl, 2013/03/05 08:57:42]

When is the enclosing class of a class element not the class itself?

[ngeoffray, 2013/03/05 09:09:40]

That was a braino caught by tests: should have been 'superclass'.

          current != null;
          current = current.superclass) {
       Element member = current.lookupLocalMember(name);
@@ -1533,7 +1541,9 @@
       // Private members from a different library are not visible.
       if (isPrivate && !identical(library, member.getLibrary())) continue;
       // Static members are not inherited.
-      if (member.modifiers.isStatic() && !identical(this, current)) continue;
+      if (member.modifiers.isStatic() && !identical(this, current)) {

[kasperl, 2013/03/05 08:57:42]

Fits on one line?

[ngeoffray, 2013/03/05 09:09:40]

Done.

+        continue;
+      }
       // If we find an abstract field we have to make sure that it has
       // the getter or setter part we're actually looking
       // for. Otherwise, we continue up the superclass chain.