Clean up operator names.

dart/lib/compiler/implementation/resolver.dart

 // Copyright (c) 2012, 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.
 
 abstract class TreeElements {
   Element operator[](Node node);
   Selector getSelector(Send send);
   DartType getType(TypeAnnotation annotation);
   bool isParameterChecked(Element element);
 }
@@ skipping 1576 matching lines @@
     if (node.isIndex) {
       return isSet ? new Selector.indexSet() : new Selector.index();
     }
 
     if (node.isOperator) {
       SourceString source = node.selector.asOperator().source;
       String string = source.stringValue;
       if (string === '!'   || string === '&&'  || string == '||' ||
           string === 'is'  || string === 'as'  ||
           string === '===' || string === '!==' ||
+          string === '?' ||
           string === '>>>') {
         return null;
       }
+      if (!isUserDefinableOperator(source.stringValue)) {
+        source = Elements.mapToUserOperator(source);
+      }
       return node.arguments.isEmpty()
           ? new Selector.unaryOperator(source)
           : new Selector.binaryOperator(source);
     }
 
     Identifier identifier = node.selector.asIdentifier();
     if (node.isPropertyAccess) {
       assert(!isSet);
       return new Selector.getter(identifier.source, library);
     } else if (isSet) {
@@ skipping 1617 matching lines @@
     return result;
   }
   Element lookup(SourceString name) => localLookup(name);
   Element lexicalLookup(SourceString name) => localLookup(name);
 
   Element add(Element newElement) {
     throw "Cannot add an element in a patch library scope";
   }
   String toString() => 'PatchLibraryScope($origin,$patch)';
 }