219 lines
7.5 KiB
C++
219 lines
7.5 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2016 The Qt Company Ltd.
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** Copyright (C) 2018 Intel Corporation.
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** Contact: https://www.qt.io/licensing/
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**
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** This file is part of the QtCore module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and The Qt Company. For licensing terms
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** and conditions see https://www.qt.io/terms-conditions. For further
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** information use the contact form at https://www.qt.io/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 3 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL3 included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 3 requirements
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** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 2.0 or (at your option) the GNU General
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** Public license version 3 or any later version approved by the KDE Free
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** Qt Foundation. The licenses are as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
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** included in the packaging of this file. Please review the following
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** information to ensure the GNU General Public License requirements will
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** be met: https://www.gnu.org/licenses/gpl-2.0.html and
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** https://www.gnu.org/licenses/gpl-3.0.html.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QPLUGIN_H
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#define QPLUGIN_H
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#include <QtCore/qobject.h>
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#include <QtCore/qpointer.h>
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#include <QtCore/qjsonobject.h>
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QT_BEGIN_NAMESPACE
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#ifndef Q_EXTERN_C
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# ifdef __cplusplus
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# define Q_EXTERN_C extern "C"
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# else
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# define Q_EXTERN_C extern
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# endif
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#endif
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inline constexpr unsigned char qPluginArchRequirements()
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{
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return 0
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#ifndef QT_NO_DEBUG
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| 1
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#endif
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#ifdef __AVX2__
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| 2
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# ifdef __AVX512F__
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| 4
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# endif
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#endif
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;
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}
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typedef QObject *(*QtPluginInstanceFunction)();
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#if QT_VERSION < QT_VERSION_CHECK(6, 0, 0)
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typedef const char *(*QtPluginMetaDataFunction)();
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#else
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struct QPluginMetaData
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{
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const uchar *data;
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size_t size;
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};
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typedef QPluginMetaData (*QtPluginMetaDataFunction)();
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#endif
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struct Q_CORE_EXPORT QStaticPlugin
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{
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#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
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public:
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constexpr QStaticPlugin(QtPluginInstanceFunction i, QtPluginMetaDataFunction m)
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: instance(i), rawMetaData(m().data), rawMetaDataSize(m().size)
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{}
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QtPluginInstanceFunction instance;
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private:
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// ### Qt 6: revise, as this is not standard-layout
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const void *rawMetaData;
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qsizetype rawMetaDataSize;
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public:
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#elif !defined(Q_QDOC)
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// Note: This struct is initialized using an initializer list.
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// As such, it cannot have any new constructors or variables.
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QtPluginInstanceFunction instance;
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QtPluginMetaDataFunction rawMetaData;
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#else
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// Since qdoc gets confused by the use of function
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// pointers, we add these dummes for it to parse instead:
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QObject *instance();
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const char *rawMetaData();
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#endif
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QJsonObject metaData() const;
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};
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Q_DECLARE_TYPEINFO(QStaticPlugin, Q_PRIMITIVE_TYPE);
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void Q_CORE_EXPORT qRegisterStaticPluginFunction(QStaticPlugin staticPlugin);
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#if (defined(Q_OF_ELF) || defined(Q_OS_WIN)) && (defined (Q_CC_GNU) || defined(Q_CC_CLANG))
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# define QT_PLUGIN_METADATA_SECTION \
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__attribute__ ((section (".qtmetadata"))) __attribute__((used))
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#elif defined(Q_OS_MAC)
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// TODO: Implement section parsing on Mac
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# define QT_PLUGIN_METADATA_SECTION \
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__attribute__ ((section ("__TEXT,qtmetadata"))) __attribute__((used))
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#elif defined(Q_CC_MSVC)
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// TODO: Implement section parsing for MSVC
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#pragma section(".qtmetadata",read,shared)
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# define QT_PLUGIN_METADATA_SECTION \
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__declspec(allocate(".qtmetadata"))
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#else
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# define QT_PLUGIN_METADATA_SECTION
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#endif
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#define Q_IMPORT_PLUGIN(PLUGIN) \
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extern const QT_PREPEND_NAMESPACE(QStaticPlugin) qt_static_plugin_##PLUGIN(); \
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class Static##PLUGIN##PluginInstance{ \
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public: \
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Static##PLUGIN##PluginInstance() { \
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qRegisterStaticPluginFunction(qt_static_plugin_##PLUGIN()); \
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} \
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}; \
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static Static##PLUGIN##PluginInstance static##PLUGIN##Instance;
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#if defined(QT_PLUGIN_RESOURCE_INIT_FUNCTION)
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# define QT_PLUGIN_RESOURCE_INIT \
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extern void QT_PLUGIN_RESOURCE_INIT_FUNCTION(); \
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QT_PLUGIN_RESOURCE_INIT_FUNCTION();
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#else
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# define QT_PLUGIN_RESOURCE_INIT
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#endif
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#define Q_PLUGIN_INSTANCE(IMPLEMENTATION) \
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{ \
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static QT_PREPEND_NAMESPACE(QPointer)<QT_PREPEND_NAMESPACE(QObject)> _instance; \
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if (!_instance) { \
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QT_PLUGIN_RESOURCE_INIT \
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_instance = new IMPLEMENTATION; \
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} \
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return _instance; \
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}
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#if defined(QT_STATICPLUGIN)
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#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
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# define QT_MOC_EXPORT_PLUGIN(PLUGINCLASS, PLUGINCLASSNAME) \
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static QT_PREPEND_NAMESPACE(QObject) *qt_plugin_instance_##PLUGINCLASSNAME() \
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Q_PLUGIN_INSTANCE(PLUGINCLASS) \
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static QPluginMetaData qt_plugin_query_metadata_##PLUGINCLASSNAME() \
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{ return { qt_pluginMetaData, sizeof qt_pluginMetaData }; } \
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const QT_PREPEND_NAMESPACE(QStaticPlugin) qt_static_plugin_##PLUGINCLASSNAME() { \
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return { qt_plugin_instance_##PLUGINCLASSNAME, qt_plugin_query_metadata_##PLUGINCLASSNAME}; \
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}
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#else
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# define QT_MOC_EXPORT_PLUGIN(PLUGINCLASS, PLUGINCLASSNAME) \
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static QT_PREPEND_NAMESPACE(QObject) *qt_plugin_instance_##PLUGINCLASSNAME() \
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Q_PLUGIN_INSTANCE(PLUGINCLASS) \
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static const char *qt_plugin_query_metadata_##PLUGINCLASSNAME() { return reinterpret_cast<const char *>(qt_pluginMetaData); } \
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const QT_PREPEND_NAMESPACE(QStaticPlugin) qt_static_plugin_##PLUGINCLASSNAME() { \
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QT_PREPEND_NAMESPACE(QStaticPlugin) plugin = { qt_plugin_instance_##PLUGINCLASSNAME, qt_plugin_query_metadata_##PLUGINCLASSNAME}; \
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return plugin; \
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}
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#endif
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#else
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#if QT_VERSION >= QT_VERSION_CHECK(6, 0, 0)
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# define QT_MOC_EXPORT_PLUGIN(PLUGINCLASS, PLUGINCLASSNAME) \
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Q_EXTERN_C Q_DECL_EXPORT \
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QPluginMetaData qt_plugin_query_metadata() \
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{ return { qt_pluginMetaData, sizeof qt_pluginMetaData }; } \
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Q_EXTERN_C Q_DECL_EXPORT QT_PREPEND_NAMESPACE(QObject) *qt_plugin_instance() \
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Q_PLUGIN_INSTANCE(PLUGINCLASS)
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#else
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# define QT_MOC_EXPORT_PLUGIN(PLUGINCLASS, PLUGINCLASSNAME) \
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Q_EXTERN_C Q_DECL_EXPORT \
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const char *qt_plugin_query_metadata() \
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{ return reinterpret_cast<const char *>(qt_pluginMetaData); } \
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Q_EXTERN_C Q_DECL_EXPORT QT_PREPEND_NAMESPACE(QObject) *qt_plugin_instance() \
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Q_PLUGIN_INSTANCE(PLUGINCLASS)
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#endif
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#endif
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#define Q_EXPORT_PLUGIN(PLUGIN) \
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Q_EXPORT_PLUGIN2(PLUGIN, PLUGIN)
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# define Q_EXPORT_PLUGIN2(PLUGIN, PLUGINCLASS) \
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Q_STATIC_ASSERT_X(false, "Old plugin system used")
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# define Q_EXPORT_STATIC_PLUGIN2(PLUGIN, PLUGINCLASS) \
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Q_STATIC_ASSERT_X(false, "Old plugin system used")
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QT_END_NAMESPACE
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#endif // Q_PLUGIN_H
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