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/* -*- 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_loader_WorkerModuleLoader_h
#define mozilla_loader_WorkerModuleLoader_h
#include "js/loader/ModuleLoaderBase.h"
#include "mozilla/dom/SerializedStackHolder.h"
#include "mozilla/UniquePtr.h"
namespace mozilla::dom::workerinternals::loader {
class WorkerScriptLoader;
// alias common classes
using ScriptFetchOptions = JS::loader::ScriptFetchOptions;
using ScriptKind = JS::loader::ScriptKind;
using ScriptLoadRequest = JS::loader::ScriptLoadRequest;
using ScriptLoadRequestList = JS::loader::ScriptLoadRequestList;
using ModuleLoadRequest = JS::loader::ModuleLoadRequest;
// WorkerModuleLoader
//
// The WorkerModuleLoader provides the methods that implement specification
// step 5 from "To fetch a worklet/module worker script graph", specifically for
// workers. In addition, this implements worker specific initialization for
// Static imports and Dynamic imports.
//
// The steps are outlined in "To fetch the descendants of and link a module
// script" and are common for all Modules. Thus we delegate to ModuleLoaderBase
// for those steps.
class WorkerModuleLoader : public JS::loader::ModuleLoaderBase {
public:
NS_DECL_ISUPPORTS_INHERITED
NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(WorkerModuleLoader,
JS::loader::ModuleLoaderBase)
WorkerModuleLoader(WorkerScriptLoader* aScriptLoader,
nsIGlobalObject* aGlobalObject,
nsISerialEventTarget* aEventTarget);
private:
~WorkerModuleLoader() = default;
bool CreateDynamicImportLoader();
void SetScriptLoader(JS::loader::ScriptLoaderInterface* aLoader) {
mLoader = aLoader;
}
void SetEventTarget(nsISerialEventTarget* aEventTarget) {
mEventTarget = aEventTarget;
}
WorkerScriptLoader* GetCurrentScriptLoader();
WorkerScriptLoader* GetScriptLoaderFor(ModuleLoadRequest* aRequest);
nsIURI* GetBaseURI() const override;
already_AddRefed<ModuleLoadRequest> CreateStaticImport(
nsIURI* aURI, ModuleLoadRequest* aParent) override;
already_AddRefed<ModuleLoadRequest> CreateDynamicImport(
JSContext* aCx, nsIURI* aURI, LoadedScript* aMaybeActiveScript,
JS::Handle<JS::Value> aReferencingPrivate,
JS::Handle<JSString*> aSpecifier,
JS::Handle<JSObject*> aPromise) override;
bool CanStartLoad(ModuleLoadRequest* aRequest, nsresult* aRvOut) override;
// StartFetch is special for worker modules, as we need to move back to the
// main thread to start a new load.
nsresult StartFetch(ModuleLoadRequest* aRequest) override;
nsresult CompileFetchedModule(
JSContext* aCx, JS::Handle<JSObject*> aGlobal,
JS::CompileOptions& aOptions, ModuleLoadRequest* aRequest,
JS::MutableHandle<JSObject*> aModuleScript) override;
void OnModuleLoadComplete(ModuleLoadRequest* aRequest) override;
bool IsModuleEvaluationAborted(ModuleLoadRequest* aRequest) override;
};
} // namespace mozilla::dom::workerinternals::loader
#endif // mozilla_loader_WorkerModuleLoader_h
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