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/****************************************************************************
**
** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the QtQml module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/contact-us.
**
** 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 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QJSENGINE_H
#define QJSENGINE_H
#include <QtCore/qmetatype.h>
#include <QtCore/qvariant.h>
#include <QtCore/qsharedpointer.h>
#include <QtCore/qobject.h>
#include <QtQml/qjsvalue.h>
QT_BEGIN_NAMESPACE
class QV8Engine;
template <typename T>
inline T qjsvalue_cast(const QJSValue &);
class QJSEnginePrivate;
class Q_QML_EXPORT QJSEngine
: public QObject
{
Q_OBJECT
public:
QJSEngine();
explicit QJSEngine(QObject *parent);
virtual ~QJSEngine();
QJSValue globalObject() const;
QJSValue evaluate(const QString &program, const QString &fileName = QString(), int lineNumber = 1);
QJSValue newObject();
QJSValue newArray(uint length = 0);
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();
void installTranslatorFunctions(const QJSValue &object = QJSValue());
QV8Engine *handle() const { return d; }
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(QJSEnginePrivate &dd, QObject *parent = 0);
private:
QV8Engine *d;
Q_DISABLE_COPY(QJSEngine)
Q_DECLARE_PRIVATE(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();
}
Q_QML_EXPORT QJSEngine *qjsEngine(const QObject *);
QT_END_NAMESPACE
#endif // QJSENGINE_H
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