LoadableClassicScript.h   [plain text]


/*
 * Copyright (C) 2016 Apple, Inc. All Rights Reserved.
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#pragma once

#include "CachedResourceClient.h"
#include "CachedResourceHandle.h"
#include "CachedScript.h"
#include "LoadableScript.h"
#include <wtf/TypeCasts.h>

namespace WebCore {

// A CachedResourceHandle alone does not prevent the underlying CachedResource
// from purging its data buffer. This class holds a client until this class is
// destroyed in order to guarantee that the data buffer will not be purged.
class LoadableClassicScript final : public LoadableScript, private CachedResourceClient {
public:
    virtual ~LoadableClassicScript();

    static Ref<LoadableClassicScript> create(const String& nonce, const String& integrity, const String& crossOriginMode, const String& charset, const AtomicString& initiatorName, bool isInUserAgentShadowTree);
    bool isLoaded() const final;
    std::optional<Error> error() const final;
    bool wasCanceled() const final;

    CachedScript& cachedScript() { return *m_cachedScript; }

    bool isClassicScript() const final { return true; }
    bool isModuleScript() const final { return false; }

    void execute(ScriptElement&) final;

    bool load(Document&, const URL&);

private:
    LoadableClassicScript(const String& nonce, const String& integrity, const String& crossOriginMode, const String& charset, const AtomicString& initiatorName, bool isInUserAgentShadowTree)
        : LoadableScript(nonce, crossOriginMode, charset, initiatorName, isInUserAgentShadowTree)
        , m_integrity(integrity)
    {
    }

    void notifyFinished(CachedResource&) final;

    CachedResourceHandle<CachedScript> m_cachedScript { };
    std::optional<Error> m_error { std::nullopt };
    String m_integrity;
};

}

SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::LoadableClassicScript)
    static bool isType(const WebCore::LoadableScript& script) { return script.isClassicScript(); }
SPECIALIZE_TYPE_TRAITS_END()