/* -*- 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_ModuleLoadRequest_h #define mozilla_dom_ModuleLoadRequest_h #include "ScriptLoadRequest.h" #include "nsURIHashKey.h" #include "mozilla/MozPromise.h" namespace mozilla { namespace dom { class ModuleScript; class ScriptLoader; // A reference counted set of URLs we have visited in the process of loading a // module graph. class VisitedURLSet : public nsTHashtable { NS_INLINE_DECL_REFCOUNTING(VisitedURLSet) private: ~VisitedURLSet() = default; }; // A load request for a module, created for every top level module script and // every module import. Load request can share an ModuleScript if there are // multiple imports of the same module. class ModuleLoadRequest final : public ScriptLoadRequest { ~ModuleLoadRequest() = default; ModuleLoadRequest(const ModuleLoadRequest& aOther) = delete; ModuleLoadRequest(ModuleLoadRequest&& aOther) = delete; public: NS_DECL_ISUPPORTS_INHERITED NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ModuleLoadRequest, ScriptLoadRequest) // Create a top-level module load request. ModuleLoadRequest(nsIURI* aURI, nsIScriptElement* aElement, CORSMode aCORSMode, const SRIMetadata& aIntegrity, nsIURI* aReferrer, mozilla::net::ReferrerPolicy, ScriptLoader* aLoader); // Create a module load request for an imported module. ModuleLoadRequest(nsIURI* aURI, ModuleLoadRequest* aParent); bool IsTopLevel() const override { return mIsTopLevel; } void SetReady() override; void Cancel() override; void ModuleLoaded(); void ModuleErrored(); void DependenciesLoaded(); void LoadFailed(); private: void LoadFinished(); void CancelImports(); public: // Is this a request for a top level module script or an import? const bool mIsTopLevel; // The base URL used for resolving relative module imports. nsCOMPtr mBaseURL; // Pointer to the script loader, used to trigger actions when the module load // finishes. RefPtr mLoader; // Set to a module script object after a successful load or nullptr on // failure. RefPtr mModuleScript; // A promise that is completed on successful load of this module and all of // its dependencies, indicating that the module is ready for instantiation and // evaluation. MozPromiseHolder mReady; // Array of imported modules. nsTArray> mImports; // Set of module URLs visited while fetching the module graph this request is // part of. RefPtr mVisitedSet; }; } // dom namespace } // mozilla namespace #endif // mozilla_dom_ModuleLoadRequest_h