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/***************************************************************************
* Copyright (c) 2017 Abdullah Tahiri <abdullah.tahiri.yo@gmail.com> *
* *
* This file is part of the FreeCAD CAx development system. *
* *
* This library is free software; you can redistribute it and/or *
* modify it under the terms of the GNU Library General Public *
* License as published by the Free Software Foundation; either *
* version 2 of the License, or (at your option) any later version. *
* *
* This library 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 Library General Public License for more details. *
* *
* You should have received a copy of the GNU Library General Public *
* License along with this library; see the file COPYING.LIB. If not, *
* write to the Free Software Foundation, Inc., 59 Temple Place, *
* Suite 330, Boston, MA 02111-1307, USA *
* *
***************************************************************************/
#ifndef BASE_EXCEPTIONFACTORY_H
#define BASE_EXCEPTIONFACTORY_H
#include "Factory.h"
#include <FCGlobal.h>
#include <typeinfo>
// Python stuff
using PyObject = struct _object;
namespace Base
{
struct PyExceptionData
{
PyObject* pyexc {};
std::string message;
bool reported {};
};
/// Abstract base class of all exception producers
class BaseExport AbstractExceptionProducer: public AbstractProducer
{
public:
AbstractExceptionProducer() = default;
// just implement it
void* Produce() const override
{
return nullptr;
}
virtual void raiseException(PyObject* pydict) const = 0;
virtual void raiseExceptionByType(const PyExceptionData&) const = 0;
};
// --------------------------------------------------------------------
/** The ExceptionFactory */
class BaseExport ExceptionFactory: public Factory
{
public:
static ExceptionFactory& Instance();
static void Destruct();
void raiseException(PyObject* pydict) const;
void raiseExceptionByType(const PyExceptionData& data) const;
private:
static ExceptionFactory* _pcSingleton; // NOLINT
ExceptionFactory() = default;
};
/* Producers */
template<class CLASS>
class ExceptionProducer: public AbstractExceptionProducer
{
public:
ExceptionProducer()
{
CLASS cls;
pyExcType = cls.getPyExceptionType();
ExceptionFactory::Instance().AddProducer(typeid(CLASS).name(), this);
}
void raiseException(PyObject* pydict) const override
{
CLASS cls;
cls.setPyObject(pydict);
throw cls;
}
void raiseExceptionByType(const PyExceptionData& data) const override
{
if (pyExcType == data.pyexc) {
CLASS cls;
cls.setMessage(data.message);
cls.setReported(data.reported);
throw cls;
}
}
private:
PyObject* pyExcType {};
};
} // namespace Base
#endif
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