/*

 * Copyright (C) 2008, 2009 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

 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

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

 */

#include "config.h"

#include "ScriptInstance.h"

#ifndef NDEBUG

#include "V8Proxy.h"

#endif

#include <wtf/Assertions.h>

namespace WebCore {

V8ScriptInstance::V8ScriptInstance()

{

}

V8ScriptInstance::V8ScriptInstance(v8::Handle<v8::Object> instance)

{

    set(instance);

}

V8ScriptInstance::~V8ScriptInstance()

{

    clear();

}

v8::Persistent<v8::Object> V8ScriptInstance::instance()

{

    return m_instance;

}

void V8ScriptInstance::clear()

{

    if (m_instance.IsEmpty())

        return;

#ifndef NDEBUG

    V8GCController::unregisterGlobalHandle(this, m_instance);

#endif

    m_instance.Dispose();

    m_instance.Clear();

}

void V8ScriptInstance::set(v8::Handle<v8::Object> instance)

{

    clear();

    if (instance.IsEmpty())

        return;

    m_instance = v8::Persistent<v8::Object>::New(instance);

#ifndef NDEBUG

    V8GCController::registerGlobalHandle(SCRIPTINSTANCE, this, m_instance);

#endif

}

} // namespace WebCore