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Diffstat (limited to 'src/declarative/qml/v8/qjsengine.h')
-rw-r--r-- | src/declarative/qml/v8/qjsengine.h | 151 |
1 files changed, 151 insertions, 0 deletions
diff --git a/src/declarative/qml/v8/qjsengine.h b/src/declarative/qml/v8/qjsengine.h new file mode 100644 index 0000000000..5109cefcf4 --- /dev/null +++ b/src/declarative/qml/v8/qjsengine.h @@ -0,0 +1,151 @@ +/**************************************************************************** +** +** 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 |