1 files changed, 67 insertions, 0 deletions
diff --git a/dom/script/ModuleScript.h b/dom/script/ModuleScript.h
new file mode 100644
index 000000000..dd0d07e84
--- /dev/null
+++ b/dom/script/ModuleScript.h
@@ -0,0 +1,67 @@
+/* -*- 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 mozilla_dom_ModuleScript_h
+#define mozilla_dom_ModuleScript_h
+
+#include "nsCOMPtr.h"
+#include "nsCycleCollectionParticipant.h"
+#include "jsapi.h"
+
+class nsIURI;
+
+namespace mozilla {
+namespace dom {
+
+class ScriptLoader;
+
+class ModuleScript final : public nsISupports
+{
+  enum InstantiationState {
+    Uninstantiated,
+    Instantiated,
+    Errored
+  };
+
+  RefPtr<ScriptLoader> mLoader;
+  nsCOMPtr<nsIURI> mBaseURL;
+  JS::Heap<JSObject*> mModuleRecord;
+  JS::Heap<JS::Value> mException;
+  InstantiationState mInstantiationState;
+
+  ~ModuleScript();
+
+public:
+  NS_DECL_CYCLE_COLLECTING_ISUPPORTS
+  NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(ModuleScript)
+
+  ModuleScript(ScriptLoader* aLoader,
+               nsIURI* aBaseURL,
+               JS::Handle<JSObject*> aModuleRecord);
+
+  ScriptLoader* Loader() const { return mLoader; }
+  JSObject* ModuleRecord() const { return mModuleRecord; }
+  JS::Value Exception() const { return mException; }
+  nsIURI* BaseURL() const { return mBaseURL; }
+
+  void SetInstantiationResult(JS::Handle<JS::Value> aMaybeException);
+  bool IsUninstantiated() const {
+    return mInstantiationState == Uninstantiated;
+  }
+  bool IsInstantiated() const {
+    return mInstantiationState == Instantiated;
+  }
+  bool InstantiationFailed() const {
+    return mInstantiationState == Errored;
+  }
+
+  void UnlinkModuleRecord();
+};
+
+} // dom namespace
+} // mozilla namespace
+
+#endif // mozilla_dom_ModuleScript_h
+\ No newline at end of file