/usr/include/camp/qt/qtfunction.hpp is in libcamp0.7-dev 0.7.1.3-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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**
** Copyright (C) 2009-2010 TECHNOGERMA Systems France and/or its subsidiary(-ies).
** Contact: Technogerma Systems France Information (contact@technogerma.fr)
**
** This file is part of the CAMP library.
**
** CAMP is free software: you can redistribute it and/or modify
** it under the terms of the GNU Lesser General Public License as published by
** the Free Software Foundation, either version 3 of the License, or
** (at your option) any later version.
**
** CAMP 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 Lesser General Public License for more details.
**
** You should have received a copy of the GNU Lesser General Public License
** along with CAMP. If not, see <http://www.gnu.org/licenses/>.
**
****************************************************************************/
#ifndef CAMP_QT_QTFUNCTION_HPP
#define CAMP_QT_QTFUNCTION_HPP
#include <camp/qt/qthelper.hpp>
#include <camp/function.hpp>
#include <camp/userobject.hpp>
#include <camp/value.hpp>
#include <QMetaMethod>
#include <QVariant>
#include <QString>
namespace camp_ext
{
/**
* \brief Specialization of camp::Function implemented using a Qt method
*
* This class is instanciated and returned by QtMapper<T>.
*
* \sa QtMapper
*/
template <typename T>
class QtFunction : public camp::Function
{
public:
/**
* \brief Construct the function from a QMetaMethod
*
* \param metaMethod Qt meta method
*/
QtFunction(const QMetaMethod& metaMethod)
: camp::Function(functionName(metaMethod), returnType(metaMethod), argTypes(metaMethod))
, m_metaMethod(metaMethod)
{
}
/**
* \see Function::execute
*/
virtual camp::Value execute(const camp::UserObject& object, const camp::Args& args) const
{
QVariant value(QtHelper::variantType(QMetaType::type(m_metaMethod.typeName())));
QGenericReturnArgument ret(m_metaMethod.typeName(), value.data());
switch (args.count())
{
case 0:
{
m_metaMethod.invoke(object.get<T*>(), Qt::DirectConnection, ret);
break;
}
case 1:
{
QVariant arg1 = QtHelper::valueToVariant(args[0]);
m_metaMethod.invoke(object.get<T*>(), Qt::DirectConnection, ret
, QGenericArgument(arg1.typeName(), arg1.data()));
break;
}
case 2:
{
QVariant arg1 = QtHelper::valueToVariant(args[0]);
QVariant arg2 = QtHelper::valueToVariant(args[1]);
m_metaMethod.invoke(object.get<T*>(), Qt::DirectConnection, ret
, QGenericArgument(arg1.typeName(), arg1.data())
, QGenericArgument(arg2.typeName(), arg2.data()));
break;
}
case 3:
{
QVariant arg1 = QtHelper::valueToVariant(args[0]);
QVariant arg2 = QtHelper::valueToVariant(args[1]);
QVariant arg3 = QtHelper::valueToVariant(args[2]);
m_metaMethod.invoke(object.get<T*>(), Qt::DirectConnection, ret
, QGenericArgument(arg1.typeName(), arg1.data())
, QGenericArgument(arg2.typeName(), arg2.data())
, QGenericArgument(arg3.typeName(), arg3.data()));
break;
}
case 4:
{
QVariant arg1 = QtHelper::valueToVariant(args[0]);
QVariant arg2 = QtHelper::valueToVariant(args[1]);
QVariant arg3 = QtHelper::valueToVariant(args[2]);
QVariant arg4 = QtHelper::valueToVariant(args[3]);
m_metaMethod.invoke(object.get<T*>(), Qt::DirectConnection, ret
, QGenericArgument(arg1.typeName(), arg1.data())
, QGenericArgument(arg2.typeName(), arg2.data())
, QGenericArgument(arg3.typeName(), arg3.data())
, QGenericArgument(arg4.typeName(), arg4.data()));
break;
}
case 5:
{
QVariant arg1 = QtHelper::valueToVariant(args[0]);
QVariant arg2 = QtHelper::valueToVariant(args[1]);
QVariant arg3 = QtHelper::valueToVariant(args[2]);
QVariant arg4 = QtHelper::valueToVariant(args[3]);
QVariant arg5 = QtHelper::valueToVariant(args[4]);
m_metaMethod.invoke(object.get<T*>(), Qt::DirectConnection, ret
, QGenericArgument(arg1.typeName(), arg1.data())
, QGenericArgument(arg2.typeName(), arg2.data())
, QGenericArgument(arg3.typeName(), arg3.data())
, QGenericArgument(arg4.typeName(), arg4.data())
, QGenericArgument(arg5.typeName(), arg5.data()));
break;
}
}
return QtHelper::variantToValue(value);
}
private:
/**
* \brief Extract the name of a meta method
*
* \param metaMethod Qt meta method
*
* \return Name of the meta method
*/
static std::string functionName(const QMetaMethod& metaMethod)
{
QString signature = metaMethod.signature();
return signature.left(signature.indexOf('(')).toStdString();
}
/**
* \brief Extract the return type of a meta method
*
* \param metaMethod Qt meta method
*
* \return Return type of the meta method
*/
static camp::Type returnType(const QMetaMethod& metaMethod)
{
return QtHelper::type(metaMethod.typeName());
}
/**
* \brief Extract the arguments types of a meta method
*
* \param metaMethod Qt meta method
*
* \return Arguments types of the meta method
*/
static std::vector<camp::Type> argTypes(const QMetaMethod& metaMethod)
{
std::vector<camp::Type> types;
QList<QByteArray> args = metaMethod.parameterTypes();
Q_FOREACH(QByteArray arg, args)
{
types.push_back(QtHelper::type(arg));
}
return types;
}
private:
QMetaMethod m_metaMethod; ///< Internal Qt method
};
} // namespace camp_ext
#endif // CAMP_QT_QTFUNCTION_HPP
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