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6 ** This file is part of the QtQml module of the Qt Toolkit.
8 ** $QT_BEGIN_LICENSE:LGPL$
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17 ** GNU Lesser General Public License Usage
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29 ** GNU General Public License Usage
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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