/*

* Copyright (C) 2013 Apple Inc. All rights reserved.

* Copyright (c) 2010 Google Inc. All rights reserved.

*

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions are

* met:

*

* * Redistributions of source code must retain the above copyright

* notice, this list of conditions and the following disclaimer.

* * Redistributions in binary form must reproduce the above

* copyright notice, this list of conditions and the following disclaimer

* in the documentation and/or other materials provided with the

* distribution.

* * Neither the name of Google Inc. nor the names of its

* contributors may be used to endorse or promote products derived from

* this software without specific prior written permission.

*

* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*/

#pragma once

#include <JavaScriptCore/Weak.h>

#include <wtf/TZoneMalloc.h>

namespace JSC {

class JSObject;

}

namespace WebCore {

class ScriptWrappable {

WTF_MAKE_TZONE_ALLOCATED(ScriptWrappable);

public:

inline JSC::JSObject* wrapper() const;

inline void setWrapper(JSC::JSObject*, JSC::WeakHandleOwner*, void*);

inline void clearWrapper(JSC::JSObject*);

template<typename Derived>

static constexpr ptrdiff_t offsetOfWrapper() { return CAST_OFFSET(Derived*, ScriptWrappable*) + OBJECT_OFFSETOF(ScriptWrappable, m_wrapper); }

protected:

WEBCORE_EXPORT ~ScriptWrappable();

private:

JSC::Weak<JSC::JSObject> m_wrapper;

};

} // namespace WebCore