Implement --analyze-all option.

dart/sdk/lib/_internal/compiler/implementation/tree/nodes.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.
 
 part of tree;
 
 abstract class Visitor<R> {
   const Visitor();
 
   R visitNode(Node node);
@@ skipping 382 matching lines @@
   final Send send;
 
   NewExpression([this.newToken, this.send]);
 
   accept(Visitor visitor) => visitor.visitNewExpression(this);
 
   visitChildren(Visitor visitor) {
     if (send != null) send.accept(visitor);
   }
 
-  bool isConst() => identical(newToken.stringValue, 'const');
+  bool isConst() {
+    return identical(newToken.stringValue, 'const')
+        || identical(newToken.stringValue, '@');
+  }
 
   Token getBeginToken() => newToken;
 
   Token getEndToken() => send.getEndToken();
 }
 
 class NodeList extends Node implements Iterable<Node> {
   final Link<Node> nodes;
   final Token beginToken;
   final Token endToken;
@@ skipping 1581 matching lines @@
  * argument).
  *
  * TODO(ahe): This method is controversial, the team needs to discuss
  * if top-level methods are acceptable and what naming conventions to
  * use.
  */
 initializerDo(Node node, f(Node node)) {
   SendSet send = node.asSendSet();
   if (send != null) return f(send.arguments.head);
 }