1 files changed, 40 insertions, 0 deletions
diff --git a/js/src/vm/WrapperObject.h b/js/src/vm/WrapperObject.h
new file mode 100644
index 0000000000..e2e44962fa
--- /dev/null
+++ b/js/src/vm/WrapperObject.h
@@ -0,0 +1,40 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ * vim: set ts=8 sts=2 et sw=2 tw=80:
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#ifndef vm_WrapperObject_h
+#define vm_WrapperObject_h
+
+#include "js/Wrapper.h"
+#include "vm/JSObject.h"
+#include "vm/ProxyObject.h"
+
+namespace js {
+
+// Proxy family for wrappers.
+// This variable exists solely to provide a unique address for use as an
+// identifier.
+extern const char sWrapperFamily;
+
+class WrapperObject : public ProxyObject {};
+
+class CrossCompartmentWrapperObject : public WrapperObject {
+ public:
+  static const unsigned GrayLinkReservedSlot = 1;
+};
+
+}  // namespace js
+
+template <>
+inline bool JSObject::is<js::WrapperObject>() const {
+  return js::IsWrapper(this);
+}
+
+template <>
+inline bool JSObject::is<js::CrossCompartmentWrapperObject>() const {
+  return js::IsCrossCompartmentWrapper(this);
+}
+
+#endif /* vm_WrapperObject_h */