ES6: Add support for Map.prototype.forEach and Set.prototype.forEach

src/factory.cc

Index: src/factory.cc
diff --git a/src/factory.cc b/src/factory.cc
index fc49e32537ebec9a4799012bc10b4b7ccbeffc72..04e9561af716293073774d234b34de1ed90cf136 100644
--- a/src/factory.cc
+++ b/src/factory.cc
@@ -1996,4 +1996,23 @@ Handle<Object> Factory::ToBoolean(bool value) {
   return value ? true_value() : false_value();
 }
 
+Handle<JSObject> Factory::CreateIteratorResultObject(Handle<Object> value,
+                                                     bool done) {
+  Handle<Map> map(isolate()->native_context()->iterator_result_map());
+  Handle<JSObject> result = NewJSObjectFromMap(map, NOT_TENURED, false);
+  JSObject::SetProperty(
+      result,
+      InternalizeOneByteString(STATIC_ASCII_VECTOR("value")),

[adamk, 2014/04/14 19:15:42]

"value" and "done" are already available in the heap, and you can get a handle
for them from the factory by calling value_string() and done_string() methods on
this.

[arv (Not doing code reviews), 2014/04/14 19:51:49]

Done.

+      value,
+      NONE,
+      SLOPPY).Assert();
+  JSObject::SetProperty(
+      result,
+      InternalizeOneByteString(STATIC_ASCII_VECTOR("done")),
+      ToBoolean(done),
+      NONE,
+      SLOPPY).Assert();
+  return result;
+}
+
 } }  // namespace v8::internal