/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtScript module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL-ONLY$
** GNU Lesser General Public License Usage
** 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.
**
** If you have questions regarding the use of this file, please contact
** us via http://www.qt.io/contact-us/.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QSCRIPTENGINEAGENT_H
#define QSCRIPTENGINEAGENT_H

#include <QtCore/qobjectdefs.h>

#include <QtCore/qvariant.h>
#include <QtCore/qscopedpointer.h>
#include <QtScript/qtscriptglobal.h>

QT_BEGIN_NAMESPACE


class QScriptEngine;
class QScriptValue;

class QScriptEngineAgentPrivate;
class Q_SCRIPT_EXPORT QScriptEngineAgent
{
public:
    enum Extension {
        DebuggerInvocationRequest
    };

    QScriptEngineAgent(QScriptEngine *engine);
    virtual ~QScriptEngineAgent();

    virtual void scriptLoad(qint64 id, const QString &program,
                            const QString &fileName, int baseLineNumber);
    virtual void scriptUnload(qint64 id);

    virtual void contextPush();
    virtual void contextPop();

    virtual void functionEntry(qint64 scriptId);
    virtual void functionExit(qint64 scriptId,
                              const QScriptValue &returnValue);

    virtual void positionChange(qint64 scriptId,
                                int lineNumber, int columnNumber);

    virtual void exceptionThrow(qint64 scriptId,
                                const QScriptValue &exception,
                                bool hasHandler);
    virtual void exceptionCatch(qint64 scriptId,
                                const QScriptValue &exception);

    virtual bool supportsExtension(Extension extension) const;
    virtual QVariant extension(Extension extension,
                               const QVariant &argument = QVariant());

    QScriptEngine *engine() const;

protected:
    QScriptEngineAgent(QScriptEngineAgentPrivate &dd, QScriptEngine *engine);
    QScopedPointer<QScriptEngineAgentPrivate> d_ptr;

private:
    Q_DECLARE_PRIVATE(QScriptEngineAgent)
    Q_DISABLE_COPY(QScriptEngineAgent)
};

QT_END_NAMESPACE

#endif
