1 files changed, 89 insertions, 0 deletions
diff --git a/dom/script/ModuleLoader.h b/dom/script/ModuleLoader.h
new file mode 100644
index 0000000000..ff37a31999
--- /dev/null
+++ b/dom/script/ModuleLoader.h
@@ -0,0 +1,89 @@
+/* -*- 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_ModuleLoader_h
+#define mozilla_dom_ModuleLoader_h
+
+#include "mozilla/dom/ScriptLoadContext.h"
+#include "js/loader/ModuleLoaderBase.h"
+#include "js/loader/ScriptLoadRequest.h"
+#include "ScriptLoader.h"
+
+class nsIURI;
+
+namespace JS {
+
+class CompileOptions;
+
+namespace loader {
+
+class ModuleLoadRequest;
+
+}  // namespace loader
+}  // namespace JS
+
+namespace mozilla::dom {
+
+class ScriptLoader;
+class SRIMetadata;
+
+//////////////////////////////////////////////////////////////
+// DOM Module loader implementation
+//////////////////////////////////////////////////////////////
+
+class ModuleLoader final : public JS::loader::ModuleLoaderBase {
+ private:
+  virtual ~ModuleLoader();
+
+ public:
+  enum Kind { Normal, WebExtension };
+
+  ModuleLoader(ScriptLoader* aLoader, nsIGlobalObject* aGlobalObject,
+               Kind aKind);
+
+  Kind GetKind() const { return mKind; }
+
+  ScriptLoader* GetScriptLoader();
+
+  bool CanStartLoad(ModuleLoadRequest* aRequest, nsresult* aRvOut) override;
+
+  nsresult StartFetch(ModuleLoadRequest* aRequest) override;
+
+  void OnModuleLoadComplete(ModuleLoadRequest* aRequest) override;
+
+  nsresult CompileFetchedModule(
+      JSContext* aCx, JS::Handle<JSObject*> aGlobal,
+      JS::CompileOptions& aOptions, ModuleLoadRequest* aRequest,
+      JS::MutableHandle<JSObject*> aModuleScript) override;
+
+  // Create a top-level module load request.
+  static already_AddRefed<ModuleLoadRequest> CreateTopLevel(
+      nsIURI* aURI, ScriptFetchOptions* aFetchOptions,
+      const SRIMetadata& aIntegrity, nsIURI* aReferrer, ScriptLoader* aLoader,
+      ScriptLoadContext* aContext);
+
+  // Create a module load request for a static module import.
+  already_AddRefed<ModuleLoadRequest> CreateStaticImport(
+      nsIURI* aURI, ModuleLoadRequest* aParent) override;
+
+  // Create a module load request for a dynamic module import.
+  already_AddRefed<ModuleLoadRequest> CreateDynamicImport(
+      JSContext* aCx, nsIURI* aURI, LoadedScript* aMaybeActiveScript,
+      JS::Handle<JS::Value> aReferencingPrivate,
+      JS::Handle<JSString*> aSpecifier,
+      JS::Handle<JSObject*> aPromise) override;
+
+  static ModuleLoader* From(ModuleLoaderBase* aLoader) {
+    return static_cast<ModuleLoader*>(aLoader);
+  }
+
+ private:
+  const Kind mKind;
+};
+
+}  // namespace mozilla::dom
+
+#endif  // mozilla_dom_ModuleLoader_h