Arguments object has @@iterator

src/accessors.cc

Index: src/accessors.cc
diff --git a/src/accessors.cc b/src/accessors.cc
index c2361b3e9cda753c69ae5e12bb57ded05385cde8..d2636d2bd589c59ce788196320abf0235d3d77ac 100644
--- a/src/accessors.cc
+++ b/src/accessors.cc
@@ -156,6 +156,45 @@ bool SetPropertyOnInstanceIfInherited(
 
 
 //
+// Accessors::ArgumentsIterator
+//
+
+
+void Accessors::ArgumentsIteratorGetter(
+    v8::Local<v8::Name> name, const v8::PropertyCallbackInfo<v8::Value>& info) {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
+  DisallowHeapAllocation no_allocation;
+  HandleScope scope(isolate);
+  Object* result = isolate->native_context()->array_values_iterator();
+  info.GetReturnValue().Set(Utils::ToLocal(Handle<Object>(result, isolate)));
+}
+
+
+void Accessors::ArgumentsIteratorSetter(
+    v8::Local<v8::Name> name, v8::Local<v8::Value> val,
+    const v8::PropertyCallbackInfo<void>& info) {
+  i::Isolate* isolate = reinterpret_cast<i::Isolate*>(info.GetIsolate());
+  HandleScope scope(isolate);
+  Handle<JSObject> object = Utils::OpenHandle(*info.This());
+  Handle<Object> value = Utils::OpenHandle(*val);
+  LookupIterator it(object, Utils::OpenHandle(*name));
+  // Advance the iterator to find out more about the property.
+  bool has_property = it.HasProperty();
+  DCHECK(has_property);
+  MaybeHandle<Object> maybe = Object::SetDataProperty(&it, value);
+  maybe.Check();
+}
+
+
+Handle<AccessorInfo> Accessors::ArgumentsIteratorInfo(
+    Isolate* isolate, PropertyAttributes attributes) {
+  return MakeAccessor(isolate, isolate->factory()->length_string(),
+                      &ArgumentsIteratorGetter, &ArgumentsIteratorSetter,
+                      attributes);
+}
+
+
+//
 // Accessors::ArrayLength
 //