Implement prefixes in NewExpression.

dart/frog/leg/tree/nodes.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 Visitor<R> {
   R visitBlock(Block node);
   R visitBreakStatement(BreakStatement node);
   R visitCatchBlock(CatchBlock node);
   R visitClassNode(ClassNode node);
   R visitConditional(Conditional node);
@@ skipping 534 matching lines @@
   final Token getOrSet;
 
   FunctionExpression(this.name, this.parameters, this.body, this.returnType,
                      this.modifiers, this.initializers, this.getOrSet);
 
   FunctionExpression asFunctionExpression() => this;
 
   accept(Visitor visitor) => visitor.visitFunctionExpression(this);
 
   visitChildren(Visitor visitor) {
+    if (modifiers !== null) modifiers.accept(visitor);
+    if (returnType !== null) returnType.accept(visitor);
     if (name !== null) name.accept(visitor);
     if (parameters !== null) parameters.accept(visitor);
+    if (initializers !== null) initializers.accept(visitor);
     if (body !== null) body.accept(visitor);
-    if (returnType !== null) returnType.accept(visitor);
   }
 
   bool hasBody() {
     // TODO(karlklose,ahe): refactor AST nodes (issue 1713).
     if (body.asReturn() !== null) return true;
     NodeList statements = body.asBlock().statements;
     return (!statements.nodes.isEmpty() ||
             statements.getBeginToken().kind !== $SEMICOLON);
   }
 
@@ skipping 1131 matching lines @@
   static bool isConstructorRedirect(Send node) {
     return (node.receiver === null &&
             node.selector.asIdentifier() !== null &&
             node.selector.asIdentifier().isThis()) ||
            (node.receiver !== null &&
             node.receiver.asIdentifier() !== null &&
             node.receiver.asIdentifier().isThis() &&
             node.selector.asIdentifier() !== null);
   }
 }