1 /****************************************************************************
3 ** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
4 ** Contact: http://www.qt-project.org/
6 ** This file is part of the QtQml module of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:LGPL$
9 ** GNU Lesser General Public License Usage
10 ** This file may be used under the terms of the GNU Lesser General Public
11 ** License version 2.1 as published by the Free Software Foundation and
12 ** appearing in the file LICENSE.LGPL included in the packaging of this
13 ** file. Please review the following information to ensure the GNU Lesser
14 ** General Public License version 2.1 requirements will be met:
15 ** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
17 ** In addition, as a special exception, Nokia gives you certain additional
18 ** rights. These rights are described in the Nokia Qt LGPL Exception
19 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
21 ** GNU General Public License Usage
22 ** Alternatively, this file may be used under the terms of the GNU General
23 ** Public License version 3.0 as published by the Free Software Foundation
24 ** and appearing in the file LICENSE.GPL included in the packaging of this
25 ** file. Please review the following information to ensure the GNU General
26 ** Public License version 3.0 requirements will be met:
27 ** http://www.gnu.org/copyleft/gpl.html.
30 ** Alternatively, this file may be used in accordance with the terms and
31 ** conditions contained in a signed written agreement between you and Nokia.
40 ****************************************************************************/
45 #include <QtCore/qmetatype.h>
47 #include <QtCore/qvariant.h>
48 #include <QtCore/qsharedpointer.h>
49 #include <QtCore/qobject.h>
50 #include <QtQml/qjsvalue.h>
60 inline T qjsvalue_cast(const QJSValue &);
62 class QJSEnginePrivate;
63 class Q_QML_EXPORT QJSEngine
69 explicit QJSEngine(QObject *parent);
72 QJSValue globalObject() const;
74 QJSValue evaluate(const QString &program, const QString &fileName = QString(), int lineNumber = 1);
77 QJSValue newArray(uint length = 0);
79 QJSValue newQObject(QObject *object);
82 inline QJSValue toScriptValue(const T &value)
84 return create(qMetaTypeId<T>(), &value);
87 inline T fromScriptValue(const QJSValue &value)
89 return qjsvalue_cast<T>(value);
92 void collectGarbage();
94 QV8Engine *handle() const { return d; }
97 QJSValue create(int type, const void *ptr);
99 static bool convertV2(const QJSValue &value, int type, void *ptr);
101 friend inline bool qjsvalue_cast_helper(const QJSValue &, int, void *);
104 QJSEngine(QJSEnginePrivate &dd, QObject *parent = 0);
108 Q_DISABLE_COPY(QJSEngine)
109 Q_DECLARE_PRIVATE(QJSEngine)
110 friend class QV8Engine;
113 inline bool qjsvalue_cast_helper(const QJSValue &value, int type, void *ptr)
115 return QJSEngine::convertV2(value, type, ptr);
119 T qjsvalue_cast(const QJSValue &value)
122 const int id = qMetaTypeId<T>();
124 if (qjsvalue_cast_helper(value, id, &t))
126 else if (value.isVariant())
127 return qvariant_cast<T>(value.toVariant());
133 inline QVariant qjsvalue_cast<QVariant>(const QJSValue &value)
135 return value.toVariant();
142 #endif // QJSENGINE_H