dart2dart Fix collecting type of class fields

lib/compiler/implementation/dart_backend/backend.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.
 
 class DartBackend extends Backend {
   final List<CompilerTask> tasks;
   final UnparseValidator unparseValidator;
 
   Map<Element, TreeElements> get resolvedElements() =>
       compiler.enqueuer.resolution.resolvedElements;
@@ skipping 120 matching lines @@
 }
 
 /**
  * Some elements are not recorded by resolver now,
  * for example, typedefs or classes which are only
  * used in signatures, as/is operators or in super clauses
  * (just to name a few).  Retraverse AST to pick those up.
  */
 class ReferencedElementCollector extends AbstractVisitor {
   final Compiler compiler;
-  final Element rootElement;
+  Element rootElement;
   final TreeElements treeElements;
   final newTypedefElementCallback;
   final newClassElementCallback;
 
   ReferencedElementCollector(
       this.compiler,
       this.rootElement, this.treeElements,
       this.newTypedefElementCallback, this.newClassElementCallback);
 
   visitClassNode(ClassNode node) {
@@ skipping 12 matching lines @@
 
   visitTypeAnnotation(TypeAnnotation typeAnnotation) {
     final type = compiler.resolveTypeAnnotation(rootElement, typeAnnotation);
     Element typeElement = type.element;
     if (typeElement.isTypedef()) newTypedefElementCallback(typeElement);
     if (typeElement.isClass()) newClassElementCallback(typeElement);
     typeAnnotation.visitChildren(this);
   }
 
   void collect() {
+    if (rootElement is VariableElement) {

[Anton Muhin, 2012/08/16 16:27:47]

let's do that in ctor or in caller, ok?

[Roman, 2012/08/16 16:33:54]

Done. Ternary expression in initializer does not look very nice, but element is
final.

[Anton Muhin, 2012/08/16 16:35:51]

Caller might be the better place, but up to you

On 2012/08/16 16:33:54, Roman wrote:

+      rootElement = (rootElement as VariableElement).variables;
+    }
     compiler.withCurrentElement(rootElement, () {
       rootElement.parseNode(compiler).accept(this);
     });
   }
 }