forked from mirrors/gecko-dev
75 lines
2.3 KiB
C++
75 lines
2.3 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 js_loader_BaseLoadContext_h
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#define js_loader_BaseLoadContext_h
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#include "js/loader/ScriptLoadRequest.h"
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#include "nsIStringBundle.h"
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namespace mozilla::dom {
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class ScriptLoadContext;
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class WorkerLoadContext;
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} // namespace mozilla::dom
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namespace mozilla::loader {
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class ComponentLoadContext;
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}
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namespace JS::loader {
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class ScriptLoadRequest;
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/*
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* LoadContextBase
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*
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* LoadContexts augment the loading of a ScriptLoadRequest. This class
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* is used as a base for all LoadContexts, and provides shared functionality.
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*
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* Different loading environments have different rules applied to how a script
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* is loaded. In DOM scripts, there are flags controlling load order (Async,
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* Deferred, normal) as well as other elements that impact the loading of a
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* script (<preload>). In the case of workers, service workers are potentially
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* loaded from the Cache. For more detailed information per context see
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* * The ScriptLoadContext: dom/script/ScriptLoadContext.h
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*
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*/
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enum class ContextKind { Window, Component, Worker };
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class LoadContextBase : public nsISupports {
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private:
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ContextKind mKind;
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protected:
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virtual ~LoadContextBase() = default;
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public:
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explicit LoadContextBase(ContextKind kind);
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NS_DECL_CYCLE_COLLECTING_ISUPPORTS
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NS_DECL_CYCLE_COLLECTION_CLASS(LoadContextBase)
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void SetRequest(JS::loader::ScriptLoadRequest* aRequest);
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// Used to output a string for the Gecko Profiler.
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virtual void GetProfilerLabel(nsACString& aOutString);
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// Casting to the different contexts
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bool IsWindowContext() const { return mKind == ContextKind::Window; }
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mozilla::dom::ScriptLoadContext* AsWindowContext();
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bool IsComponentContext() const { return mKind == ContextKind::Component; }
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mozilla::loader::ComponentLoadContext* AsComponentContext();
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bool IsWorkerContext() const { return mKind == ContextKind::Worker; }
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mozilla::dom::WorkerLoadContext* AsWorkerContext();
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RefPtr<JS::loader::ScriptLoadRequest> mRequest;
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};
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} // namespace JS::loader
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#endif // js_loader_BaseLoadContext_h
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