/usr/include/gammaray/core/metaobject.h is in gammaray-dev 2.7.0-1ubuntu8.
This file is owned by root:root, with mode 0o644.
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metaobject.h
This file is part of GammaRay, the Qt application inspection and
manipulation tool.
Copyright (C) 2011-2017 Klarälvdalens Datakonsult AB, a KDAB Group company, info@kdab.com
Author: Volker Krause <volker.krause@kdab.com>
Licensees holding valid commercial KDAB GammaRay licenses may use this file in
accordance with GammaRay Commercial License Agreement provided with the Software.
Contact info@kdab.com if any conditions of this licensing are not clear to you.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef GAMMARAY_METAOBJECT_H
#define GAMMARAY_METAOBJECT_H
#include "gammaray_core_export.h"
#include "metaproperty.h"
#include <QVector>
namespace GammaRay {
/** @brief Compile-time introspection adaptor for non-QObject classes. */
class GAMMARAY_CORE_EXPORT MetaObject
{
public:
MetaObject();
virtual ~MetaObject();
/**
* Returns the amount of properties available in this class (including base classes).
*/
int propertyCount() const;
/**
* Returns the property adaptor for index @p index.
*/
MetaProperty *propertyAt(int index) const;
/** Add a base class meta object. */
void addBaseClass(MetaObject *baseClass);
/** Add a property for this class. This transfers ownership. */
void addProperty(MetaProperty *property);
/// Returns the name of the class represented by this object.
QString className() const;
/** Casts a void pointer for an instance of this type to one appropriate
* for use with the property at index @p index.
* Make sure to use this when dealing with multi-inheritance.
*/
void *castForPropertyAt(void *object, int index) const;
/** Casts to a void pointer for an instance of this type to one referring
* to the given base class type. If @p baseClass is not a base class
* of this type, @c nullptr is returned.
*/
void *castTo(void *object, const QString &baseClass) const;
void setClassName(const QString &className);
MetaObject *superClass(int index = 0) const;
bool inherits(const QString &className) const;
protected:
/** Casts down to base class @p baseClassIndex.
* This is important when traversing multi-inheritance trees.
*/
virtual void *castToBaseClass(void *object, int baseClassIndex) const = 0;
protected:
QVector<MetaObject *> m_baseClasses;
private:
Q_DISABLE_COPY(MetaObject)
QVector<MetaProperty *> m_properties;
QString m_className;
};
/** @brief Template implementation of MetaObject. */
template<typename T, typename Base1 = void, typename Base2 = void, typename Base3 = void>
class MetaObjectImpl : public MetaObject
{
public:
void *castToBaseClass(void *object, int baseClassIndex) const override
{
Q_ASSERT(baseClassIndex >= 0 && baseClassIndex < m_baseClasses.size());
switch (baseClassIndex) {
case 0:
return static_cast<Base1 *>(static_cast<T *>(object));
case 1:
return static_cast<Base2 *>(static_cast<T *>(object));
case 2:
return static_cast<Base3 *>(static_cast<T *>(object));
}
Q_ASSERT_X(false, "MetaObjectImpl::castToBaseClass",
"Unexpected baseClassIndex encountered");
return nullptr;
}
};
}
#endif // GAMMARAY_METAOBJECT_H
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