/****************************************************************************
**
** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtScript module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** No Commercial Usage
** This file contains pre-release code and may not be distributed.
** You may use this file in accordance with the terms and conditions
** contained in the either Technology Preview License Agreement or the
** Beta Release License Agreement.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain
** additional rights. These rights are described in the Nokia Qt LGPL
** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
** package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file.  Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you are unsure which license is appropriate for your use, please
** contact the sales department at http://qt.nokia.com/contact.
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qscriptfunction_p.h"

#ifndef QT_NO_SCRIPT

#include "qscriptengine_p.h"
#include "qscriptvalueimpl_p.h"
#include "qscriptcontext_p.h"
#include "qscriptmember_p.h"
#include "qscriptobject_p.h"

QT_BEGIN_NAMESPACE

QScriptFunction::~QScriptFunction()
{
}

QString QScriptFunction::toString(QScriptContextPrivate *) const
{
    QString result;
    result += QLatin1String("function () { [native] }");
    return result;
}

QString QScriptFunction::fileName() const
{
    return QString();
}

QString QScriptFunction::functionName() const
{
    return QString();
}

int QScriptFunction::startLineNumber() const
{
    return -1;
}

int QScriptFunction::endLineNumber() const
{
    return -1;
}

void QScriptFunction::mark(QScriptEnginePrivate *engine, int generation)
{
    for (int i = 0; i < formals.count(); ++i)
        engine->markString(formals.at(i), generation);
}

// public API function
void QScript::CFunction::execute(QScriptContextPrivate *context)
{
    QScriptEnginePrivate *eng_p = context->engine();

    context->m_result = eng_p->undefinedValue();

#ifndef Q_SCRIPT_NO_EVENT_NOTIFY
    eng_p->notifyFunctionEntry(context);
#endif

    QScriptContext *publicContext = QScriptContextPrivate::get(eng_p->currentContext());
    QScriptEngine *publicEngine = QScriptEnginePrivate::get(eng_p);
    QScriptValueImpl result = eng_p->toImpl((*m_funPtr)(publicContext, publicEngine));
    if (result.isValid() && !eng_p->shouldAbort()
        && (context->state() == QScriptContext::NormalState)) {
        context->m_result = result;
    }

#ifndef Q_SCRIPT_NO_EVENT_NOTIFY
    eng_p->notifyFunctionExit(context);
#endif
}

QString QScript::CFunction::functionName() const
{
    return QString();
}

// internal API function
void QScript::C2Function::execute(QScriptContextPrivate *context)
{
    QScriptEnginePrivate *eng_p = context->engine();

    bool blocked = eng_p->blockGC(true);

#ifndef Q_SCRIPT_NO_EVENT_NOTIFY
    eng_p->notifyFunctionEntry(context);
#endif

    context->m_result = (*m_funPtr)(context, eng_p, m_classInfo);
    Q_ASSERT(context->m_result.isValid());

#ifndef Q_SCRIPT_NO_EVENT_NOTIFY
    eng_p->notifyFunctionExit(context);
#endif

    eng_p->blockGC(blocked);
}

QString QScript::C2Function::functionName() const
{
    if (!m_name.isEmpty())
        return m_name;
    return QString();
}

void QScript::C3Function::execute(QScriptContextPrivate *context)
{
    QScriptEnginePrivate *eng_p = context->engine();

    context->m_result = eng_p->undefinedValue();

#ifndef Q_SCRIPT_NO_EVENT_NOTIFY
    eng_p->notifyFunctionEntry(context);
#endif

    QScriptContext *publicContext = QScriptContextPrivate::get(eng_p->currentContext());
    QScriptEngine *publicEngine = QScriptEnginePrivate::get(eng_p);
    QScriptValueImpl result = eng_p->toImpl((*m_funPtr)(publicContext, publicEngine, m_arg));
    if (result.isValid() && !eng_p->shouldAbort())
        context->m_result = result;

#ifndef Q_SCRIPT_NO_EVENT_NOTIFY
    eng_p->notifyFunctionExit(context);
#endif
}

QT_END_NAMESPACE

#endif // QT_NO_SCRIPT