forked from mirrors/gecko-dev
119 lines
4.1 KiB
C++
119 lines
4.1 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef mozilla_dom_ModuleLoadRequest_h
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#define mozilla_dom_ModuleLoadRequest_h
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#include "ScriptLoadRequest.h"
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#include "nsURIHashKey.h"
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#include "mozilla/MozPromise.h"
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namespace mozilla {
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namespace dom {
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class ModuleScript;
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class ScriptLoader;
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// A reference counted set of URLs we have visited in the process of loading a
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// module graph.
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class VisitedURLSet : public nsTHashtable<nsURIHashKey> {
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NS_INLINE_DECL_REFCOUNTING(VisitedURLSet)
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private:
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~VisitedURLSet() = default;
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};
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// A load request for a module, created for every top level module script and
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// every module import. Load request can share an ModuleScript if there are
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// multiple imports of the same module.
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class ModuleLoadRequest final : public ScriptLoadRequest {
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~ModuleLoadRequest() = default;
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ModuleLoadRequest(const ModuleLoadRequest& aOther) = delete;
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ModuleLoadRequest(ModuleLoadRequest&& aOther) = delete;
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ModuleLoadRequest(nsIURI* aURI, ScriptFetchOptions* aFetchOptions,
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const SRIMetadata& aIntegrity, nsIURI* aReferrer,
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bool aIsTopLevel, bool aIsDynamicImport,
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ScriptLoader* aLoader, VisitedURLSet* aVisitedSet);
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public:
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS_INHERITED(ModuleLoadRequest,
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ScriptLoadRequest)
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// Create a top-level module load request.
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static ModuleLoadRequest* CreateTopLevel(nsIURI* aURI,
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ScriptFetchOptions* aFetchOptions,
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const SRIMetadata& aIntegrity,
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nsIURI* aReferrer,
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ScriptLoader* aLoader);
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// Create a module load request for a static module import.
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static ModuleLoadRequest* CreateStaticImport(nsIURI* aURI,
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ModuleLoadRequest* aParent);
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// Create a module load request for dynamic module import.
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static ModuleLoadRequest* CreateDynamicImport(
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nsIURI* aURI, ScriptFetchOptions* aFetchOptions, nsIURI* aBaseURL,
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ScriptLoader* aLoader, JS::Handle<JS::Value> aReferencingPrivate,
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JS::Handle<JSString*> aSpecifier, JS::Handle<JSObject*> aPromise);
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bool IsTopLevel() const override { return mIsTopLevel; }
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bool IsDynamicImport() const { return mIsDynamicImport; }
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void SetReady() override;
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void Cancel() override;
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void ClearDynamicImport();
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void ModuleLoaded();
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void ModuleErrored();
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void DependenciesLoaded();
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void LoadFailed();
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private:
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void LoadFinished();
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void CancelImports();
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public:
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// Is this a request for a top level module script or an import?
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const bool mIsTopLevel;
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// Is this the top level request for a dynamic module import?
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const bool mIsDynamicImport;
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// Pointer to the script loader, used to trigger actions when the module load
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// finishes.
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RefPtr<ScriptLoader> mLoader;
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// Set to a module script object after a successful load or nullptr on
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// failure.
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RefPtr<ModuleScript> mModuleScript;
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// A promise that is completed on successful load of this module and all of
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// its dependencies, indicating that the module is ready for instantiation and
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// evaluation.
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MozPromiseHolder<GenericPromise> mReady;
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// Array of imported modules.
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nsTArray<RefPtr<ModuleLoadRequest>> mImports;
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// Set of module URLs visited while fetching the module graph this request is
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// part of.
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RefPtr<VisitedURLSet> mVisitedSet;
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// For dynamic imports, the details to pass to FinishDynamicImport.
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JS::Heap<JS::Value> mDynamicReferencingPrivate;
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JS::Heap<JSString*> mDynamicSpecifier;
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JS::Heap<JSObject*> mDynamicPromise;
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};
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} // namespace dom
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} // namespace mozilla
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#endif // mozilla_dom_ModuleLoadRequest_h
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