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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd.
** Contact: http://www.qt.io/licensing/
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL21$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see http://www.qt.io/terms-conditions. For further
** information use the contact form at http://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 or version 3 as published by the Free
** Software Foundation and appearing in the file LICENSE.LGPLv21 and
** LICENSE.LGPLv3 included in the packaging of this file. Please review the
** following information to ensure the GNU Lesser General Public License
** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** As a special exception, The Qt Company gives you certain additional
** rights. These rights are described in The Qt Company LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QPLUGIN_H
#define QPLUGIN_H
#include <QtCore/qobject.h>
#include <QtCore/qpointer.h>
#include <QtCore/qjsonobject.h>
QT_BEGIN_NAMESPACE
#ifndef Q_EXTERN_C
# ifdef __cplusplus
# define Q_EXTERN_C extern "C"
# else
# define Q_EXTERN_C extern
# endif
#endif
typedef QObject *(*QtPluginInstanceFunction)();
typedef const char *(*QtPluginMetaDataFunction)();
struct Q_CORE_EXPORT QStaticPlugin
{
// Note: This struct is initialized using an initializer list.
// As such, it cannot have any new constructors or variables.
#ifndef Q_QDOC
QtPluginInstanceFunction instance;
QtPluginMetaDataFunction rawMetaData;
#else
// Since qdoc gets confused by the use of function
// pointers, we add these dummes for it to parse instead:
QObject *instance();
const char *rawMetaData();
#endif
QJsonObject metaData() const;
};
Q_DECLARE_TYPEINFO(QStaticPlugin, Q_PRIMITIVE_TYPE);
void Q_CORE_EXPORT qRegisterStaticPluginFunction(QStaticPlugin staticPlugin);
#if (defined(Q_OF_ELF) || defined(Q_OS_WIN)) && (defined (Q_CC_GNU) || defined(Q_CC_CLANG))
# define QT_PLUGIN_METADATA_SECTION \
__attribute__ ((section (".qtmetadata"))) __attribute__((used))
#elif defined(Q_OS_MAC)
// TODO: Implement section parsing on Mac
# define QT_PLUGIN_METADATA_SECTION \
__attribute__ ((section ("__TEXT,qtmetadata"))) __attribute__((used))
#elif defined(Q_CC_MSVC)
// TODO: Implement section parsing for MSVC
#pragma section(".qtmetadata",read,shared)
# define QT_PLUGIN_METADATA_SECTION \
__declspec(allocate(".qtmetadata"))
#else
# define QT_PLUGIN_VERIFICATION_SECTION
# define QT_PLUGIN_METADATA_SECTION
#endif
#define Q_IMPORT_PLUGIN(PLUGIN) \
extern const QT_PREPEND_NAMESPACE(QStaticPlugin) qt_static_plugin_##PLUGIN(); \
class Static##PLUGIN##PluginInstance{ \
public: \
Static##PLUGIN##PluginInstance() { \
qRegisterStaticPluginFunction(qt_static_plugin_##PLUGIN()); \
} \
}; \
static Static##PLUGIN##PluginInstance static##PLUGIN##Instance;
#define Q_PLUGIN_INSTANCE(IMPLEMENTATION) \
{ \
static QT_PREPEND_NAMESPACE(QPointer)<QT_PREPEND_NAMESPACE(QObject)> _instance; \
if (!_instance) \
_instance = new IMPLEMENTATION; \
return _instance; \
}
#if defined(QT_STATICPLUGIN)
# define QT_MOC_EXPORT_PLUGIN(PLUGINCLASS, PLUGINCLASSNAME) \
static QT_PREPEND_NAMESPACE(QObject) *qt_plugin_instance_##PLUGINCLASSNAME() \
Q_PLUGIN_INSTANCE(PLUGINCLASS) \
static const char *qt_plugin_query_metadata_##PLUGINCLASSNAME() { return (const char *)qt_pluginMetaData; } \
const QT_PREPEND_NAMESPACE(QStaticPlugin) qt_static_plugin_##PLUGINCLASSNAME() { \
QT_PREPEND_NAMESPACE(QStaticPlugin) plugin = { qt_plugin_instance_##PLUGINCLASSNAME, qt_plugin_query_metadata_##PLUGINCLASSNAME}; \
return plugin; \
}
#else
# define QT_MOC_EXPORT_PLUGIN(PLUGINCLASS, PLUGINCLASSNAME) \
Q_EXTERN_C Q_DECL_EXPORT \
const char *qt_plugin_query_metadata() \
{ return (const char *)qt_pluginMetaData; } \
Q_EXTERN_C Q_DECL_EXPORT QT_PREPEND_NAMESPACE(QObject) *qt_plugin_instance() \
Q_PLUGIN_INSTANCE(PLUGINCLASS)
#endif
#define Q_EXPORT_PLUGIN(PLUGIN) \
Q_EXPORT_PLUGIN2(PLUGIN, PLUGIN)
# define Q_EXPORT_PLUGIN2(PLUGIN, PLUGINCLASS) \
Q_STATIC_ASSERT_X(false, "Old plugin system used")
# define Q_EXPORT_STATIC_PLUGIN2(PLUGIN, PLUGINCLASS) \
Q_STATIC_ASSERT_X(false, "Old plugin system used")
QT_END_NAMESPACE
#endif // Q_PLUGIN_H
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