Operators.

frog/leg/resolver.dart

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 interface TreeElements {
   Element operator[](Node node);
 }
 
 class TreeElementMapping implements TreeElements {
   Map<Node, Element> map;
@@ skipping 632 matching lines @@
 
     visit(node.send.argumentsNode);
 
     SourceString constructorName;
     Node typeName = node.send.selector.asTypeAnnotation().typeName;
     if (typeName.asSend() !== null) {
       Identifier receiver = typeName.asSend().receiver.asIdentifier();
       Identifier selector = typeName.asSend().selector.asIdentifier();
       SourceString className = receiver.source;
       SourceString name = selector.source;
-      constructorName = new SourceString('$className.$name');
+      constructorName = Elements.constructConstructorName(className, name);

[Lasse Reichstein Nielsen, 2012/01/27 09:42:34]

You are mangling the name here, right?
How about not mangling it until codegen?

[ngeoffray, 2012/01/27 10:50:04]

No I'm not mangling it. I'm making it a single SourceString, because that's the
keys for our maps.

     } else {
       constructorName = typeName.asIdentifier().source;
     }
     ClassElement cls = resolveTypeRequired(node.send.selector);
     Element constructor = null;
     if (cls !== null) {
       constructor = cls.resolve(compiler).lookupConstructor(constructorName);
       if (constructorName == cls.name
           && constructor === null
           && node.send.argumentsNode.isEmpty()) {
@@ skipping 335 matching lines @@
 class TopScope extends Scope {
   Universe universe;
 
   TopScope(Universe this.universe) : super(null, null);
   Element lookup(SourceString name) => universe.find(name);
 
   Element add(Element element) {
     throw "Cannot add an element in the top scope";
   }
 }