1 files changed, 29 insertions, 0 deletions
diff --git a/js/src/vm/ReceiverGuard-inl.h b/js/src/vm/ReceiverGuard-inl.h
new file mode 100644
index 0000000000..ffd5e4a796
--- /dev/null
+++ b/js/src/vm/ReceiverGuard-inl.h
@@ -0,0 +1,29 @@
+/* -*- 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_ReceiverGuard_inl_h
+#define vm_ReceiverGuard_inl_h
+
+#include "vm/ReceiverGuard.h"
+
+#include "vm/JSObject.h"
+#include "wasm/TypedObject.h"
+
+namespace js {
+
+MOZ_ALWAYS_INLINE
+ReceiverGuard::ReceiverGuard(JSObject* obj) : group_(nullptr), shape_(nullptr) {
+  if (obj->isNative() || IsProxy(obj)) {
+    shape_ = obj->shape();
+    return;
+  }
+  MOZ_ASSERT(obj->is<TypedObject>());
+  group_ = obj->group();
+}
+
+}  // namespace js
+
+#endif /* vm_ReceiverGuard_inl_h */