Substitution handled for most Send nodes.

lib/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.
 
 interface Visitor<R> {
   R visitBlock(Block node);
   R visitBreakStatement(BreakStatement node);
   R visitCascade(Cascade node);
   R visitCascadeReceiver(CascadeReceiver node);
   R visitCaseMatch(CaseMatch node);
@@ skipping 367 matching lines @@
 
   visitChildren(Visitor visitor) {
     if (send !== null) send.accept(visitor);
   }
 
   bool isConst() => newToken.stringValue === 'const';
 
   Token getBeginToken() => newToken;
 
   Token getEndToken() => send.getEndToken();
+
+  /**
+   * Returns the type annotation of this new expression. The type annotation
+   * is either the `send.selector` for invocations of unnamed constructors like
+   * `new Class()`, or `send.selector.receiver` for named constructors like
+   * `new Class.named()`.
+   */
+  TypeAnnotation getTypeAnnotation() {
+    if (send.selector.asTypeAnnotation() !== null) {
+      return send.selector;
+    } else if (send.selector.asSend() !== null) {
+      Send selector = send.selector;
+      if (selector.receiver.asTypeAnnotation() !== null) {
+        return selector.receiver;
+      }
+    } else {
+      return null;
+    }
+  }
 }
 
 class NodeList extends Node implements Iterable<Node> {
   final Link<Node> nodes;
   final Token beginToken;
   final Token endToken;
   final SourceString delimiter;
   bool isEmpty() => nodes.isEmpty();
 
   NodeList([this.beginToken, this.nodes, this.endToken, this.delimiter]);
@@ skipping 1351 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);
 }