Fix Swarm to run again, and enable its test

frog/value.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.
 
 /**
  * Represents a meta-value for code generation.
  */
 class Value {
   /** The [Type] of the [Value]. */
   Type type;
@@ skipping 319 matching lines @@
    * Generates a run time type assertion for the given value. This works like
    * [instanceOf], but it allows null since Dart types are nullable.
    * Also it will throw a TypeError if it gets the wrong type.
    */
   Value _typeAssert(MethodGenerator context, Type toType, Node node) {
     if (toType is ParameterType) {
       ParameterType p = toType;
       toType = p.extendsType;
     }
 
-    // TODO(jmesserly): fix checking of function types.
+    // TODO(jmesserly): fix checking of function types, and DOM objects
     // For now, don't generate a broken check.
-    if (toType.getCallMethod() != null) {
+    // (For DOM types to work right, we need to lazily patch the "is$DOMWindow"
+    // check methods, by catching it on Object.prototype like VarMember does)

[jimhug, 2011/11/22 18:20:14]

Niggling worry - does this change conflict with Stephen's recent commit to use
isHidden?

+    if (toType.getCallMethod() != null || toType.library == world.dom) {
       return this;
     }
 
     if (toType.isObject || toType.isVar) {
       world.internalError('We thought ${type.name} is not a subtype of ${toType.name}?');
     }
 
     // TODO(jmesserly): better assert for integers?
     if (toType.isNum) toType = world.numType;
 
@@ skipping 371 matching lines @@
     // Then look for members in my library.
     member = home.library.lookup(name, span);
     if (member != null) {
       return member;
     }
 
     _ensureCode();
     return null;
   }
 }