3503816570
* lang/qt/src/job_p.h: New. * lang/qt/src/job.cpp (typedef JobPrivateHash, d_func, setJobPrivate, getJobPrivate): New. -- Because of ABI compatibility requirements we cannot add a d-pointer to Job. Therefore we store the d-pointers in a global static. This mechanism will allow Job subclasses to store additional data without breaking the ABI. GnuPG-bug-id: 4717
71 lines
2.2 KiB
C++
71 lines
2.2 KiB
C++
/*
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job_p.h
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This file is part of qgpgme, the Qt API binding for gpgme
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Copyright (c) 2021 g10 Code GmbH
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Software engineering by Ingo Klöcker <dev@ingo-kloecker.de>
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QGpgME is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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QGpgME is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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In addition, as a special exception, the copyright holders give
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permission to link the code of this program with any edition of
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the Qt library by Trolltech AS, Norway (or with modified versions
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of Qt that use the same license as Qt), and distribute linked
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combinations including the two. You must obey the GNU General
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Public License in all respects for all of the code used other than
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Qt. If you modify this file, you may extend this exception to
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your version of the file, but you are not obligated to do so. If
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you do not wish to do so, delete this exception statement from
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your version.
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*/
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#ifndef __QGPGME_JOB_P_H__
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#define __QGPGME_JOB_P_H__
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#include "job.h"
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#include <memory>
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namespace QGpgME
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{
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// Base class for pimpl classes for Job subclasses
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class JobPrivate
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{
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public:
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virtual ~JobPrivate() {}
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};
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// Setter and getters for the externally stored pimpl instances of jobs
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// BCI: Add a real d-pointer to Job
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void setJobPrivate(const Job *job, std::unique_ptr<JobPrivate> d);
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JobPrivate *getJobPrivate(const Job *job);
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template <typename T>
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static T *jobPrivate(const Job *job) {
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auto d = getJobPrivate(job);
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if (!d) {
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std::unique_ptr<T> ref{new T};
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d = ref.get();
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setJobPrivate(job, std::move(ref));
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}
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return dynamic_cast<T *>(d);
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}
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}
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#endif // __QGPGME_JOB_P_H__
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