Collect referenced classes recursively.

lib/compiler/implementation/dart_backend/backend.dart

Index: lib/compiler/implementation/dart_backend/backend.dart
diff --git a/lib/compiler/implementation/dart_backend/backend.dart b/lib/compiler/implementation/dart_backend/backend.dart
index a896995c3fefa1892d43c17421cce5ac131b485d..86745d56cd3640ba0fbdd0c67212975d8890dc12 100644
--- a/lib/compiler/implementation/dart_backend/backend.dart
+++ b/lib/compiler/implementation/dart_backend/backend.dart
@@ -152,7 +152,12 @@ class ReferencedElementCollector extends AbstractVisitor {
           compiler, typeElement, new TreeElementMapping(), typedefs, classes)
       .collect();
     }
-    if (typeElement.isClass()) classes.add(typeElement);
+    if (typeElement.isClass() && !classes.contains(typeElement)) {
+      classes.add(typeElement);
+      new ReferencedElementCollector(

[Anton Muhin, 2012/08/13 08:01:01]

please, do not duplicate the code, but move it below under flag or introduce a
helper

[Roman, 2012/08/13 08:14:06]

Done.

+          compiler, typeElement, new TreeElementMapping(), typedefs, classes)
+      .collect();
+    }
     typeAnnotation.visitChildren(this);
   }