/*

 *  Copyright (C) 1999-2000 Harri Porten (porten@kde.org)

 *  Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.

 *

 *  This library is free software; you can redistribute it and/or

 *  modify it under the terms of the GNU Lesser General Public

 *  License as published by the Free Software Foundation; either

 *  version 2 of the License, or (at your option) any later version.

 *

 *  This library is distributed in the hope that it will be useful,

 *  but WITHOUT ANY WARRANTY; without even the implied warranty of

 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

 *  Lesser General Public License for more details.

 *

 *  You should have received a copy of the GNU Lesser General Public

 *  License along with this library; if not, write to the Free Software

 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301

 *  USA

 *

 */

#include "config.h"

#include "DateInstance.h"

#include "JSGlobalObject.h"

#include <math.h>

#include <wtf/DateMath.h>

#include <wtf/MathExtras.h>

using namespace WTF;

namespace JSC {

const ClassInfo DateInstance::info = {"Date", 0, 0, 0};

DateInstance::DateInstance(ExecState* exec, NonNullPassRefPtr<Structure> structure)

    : JSWrapperObject(structure)

{

    setInternalValue(jsNaN(exec));

}

DateInstance::DateInstance(ExecState* exec, NonNullPassRefPtr<Structure> structure, double time)

    : JSWrapperObject(structure)

{

    setInternalValue(jsNumber(exec, timeClip(time)));

}

DateInstance::DateInstance(ExecState* exec, double time)

    : JSWrapperObject(exec->lexicalGlobalObject()->dateStructure())

{

    setInternalValue(jsNumber(exec, timeClip(time)));

}

const GregorianDateTime* DateInstance::calculateGregorianDateTime(ExecState* exec) const

{

    double milli = internalNumber();

    if (isnan(milli))

        return 0;

    if (!m_data)

        m_data = exec->globalData().dateInstanceCache.add(milli);

    if (m_data->m_gregorianDateTimeCachedForMS != milli) {

        msToGregorianDateTime(exec, milli, false, m_data->m_cachedGregorianDateTime);

        m_data->m_gregorianDateTimeCachedForMS = milli;

    }

    return &m_data->m_cachedGregorianDateTime;

}

const GregorianDateTime* DateInstance::calculateGregorianDateTimeUTC(ExecState* exec) const

{

    double milli = internalNumber();

    if (isnan(milli))

        return 0;

    if (!m_data)

        m_data = exec->globalData().dateInstanceCache.add(milli);

    if (m_data->m_gregorianDateTimeUTCCachedForMS != milli) {

        msToGregorianDateTime(exec, milli, true, m_data->m_cachedGregorianDateTimeUTC);

        m_data->m_gregorianDateTimeUTCCachedForMS = milli;

    }

    return &m_data->m_cachedGregorianDateTimeUTC;

}

} // namespace JSC