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/****************************************************************************
**
** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** 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
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QJSENGINE_H
#define QJSENGINE_H
#include <QtCore/qmetatype.h>
#include <QtCore/qvariant.h>
#include <QtCore/qsharedpointer.h>
#include <QtCore/qobject.h>
#include <QtDeclarative/qjsvalue.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Script)
class QDateTime;
class QV8Engine;
class QRegExp;
template <typename T>
inline T qjsvalue_cast(const QJSValue &);
class Q_SCRIPT_EXPORT QJSEngine
: public QObject
{
Q_OBJECT
public:
enum ContextOwnership {
AdoptCurrentContext,
CreateNewContext
};
QJSEngine();
explicit QJSEngine(ContextOwnership ownership);
explicit QJSEngine(QObject *parent);
virtual ~QJSEngine();
QJSValue globalObject() const;
QJSValue evaluate(const QString &program, const QString &fileName = QString(), int lineNumber = 1);
bool hasUncaughtException() const;
QJSValue uncaughtException() const;
void clearExceptions();
QJSValue nullValue();
QJSValue undefinedValue();
QJSValue newVariant(const QVariant &value);
QJSValue newRegExp(const QRegExp ®exp);
QJSValue newObject();
QJSValue newArray(uint length = 0);
QJSValue newRegExp(const QString &pattern, const QString &flags);
QJSValue newDate(double value);
QJSValue newDate(const QDateTime &value);
QJSValue newQObject(QObject *object);
template <typename T>
inline QJSValue toScriptValue(const T &value)
{
return create(qMetaTypeId<T>(), &value);
}
template <typename T>
inline T fromScriptValue(const QJSValue &value)
{
return qjsvalue_cast<T>(value);
}
void collectGarbage();
QJSValue toObject(const QJSValue &value);
QV8Engine *handle() const { return d; }
Q_SIGNALS:
void signalHandlerException(const QJSValue &exception);
private:
QJSValue create(int type, const void *ptr);
static bool convertV2(const QJSValue &value, int type, void *ptr);
friend inline bool qjsvalue_cast_helper(const QJSValue &, int, void *);
protected:
QJSEngine(QObjectPrivate &dd, QObject *parent = 0);
private:
QV8Engine *d;
Q_DISABLE_COPY(QJSEngine)
friend class QV8Engine;
};
inline bool qjsvalue_cast_helper(const QJSValue &value, int type, void *ptr)
{
return QJSEngine::convertV2(value, type, ptr);
}
template<typename T>
T qjsvalue_cast(const QJSValue &value)
{
T t;
const int id = qMetaTypeId<T>();
if (qjsvalue_cast_helper(value, id, &t))
return t;
else if (value.isVariant())
return qvariant_cast<T>(value.toVariant());
return T();
}
template <>
inline QVariant qjsvalue_cast<QVariant>(const QJSValue &value)
{
return value.toVariant();
}
QT_END_NAMESPACE
QT_END_HEADER
#endif // QJSENGINE_H
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