1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
|
// Copyright (C) 2017 The Qt Company Ltd.
// Copyright (C) 2022 Intel Corporation.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
#ifndef QFACTORYLOADER_P_H
#define QFACTORYLOADER_P_H
//
// W A R N I N G
// -------------
//
// This file is not part of the Qt API. It exists purely as an
// implementation detail. This header file may change from version to
// version without notice, or even be removed.
//
// We mean it.
//
#include "QtCore/qglobal.h"
#ifndef QT_NO_QOBJECT
#include "QtCore/private/qplugin_p.h"
#include "QtCore/qcbormap.h"
#include "QtCore/qcborvalue.h"
#include "QtCore/qmap.h"
#include "QtCore/qobject.h"
#include "QtCore/qplugin.h"
QT_BEGIN_NAMESPACE
class QJsonObject;
class QLibraryPrivate;
class QPluginParsedMetaData
{
QCborValue data;
bool setError(const QString &errorString) Q_DECL_COLD_FUNCTION
{
data = errorString;
return false;
}
public:
QPluginParsedMetaData() = default;
QPluginParsedMetaData(QByteArrayView input) { parse(input); }
bool isError() const { return !data.isMap(); }
QString errorString() const { return data.toString(); }
bool parse(QByteArrayView input);
bool parse(QPluginMetaData metaData)
{ return parse(QByteArrayView(reinterpret_cast<const char *>(metaData.data), metaData.size)); }
QJsonObject toJson() const; // only for QLibrary & QPluginLoader
// if data is not a map, toMap() returns empty, so shall these functions
QCborMap toCbor() const { return data.toMap(); }
QCborValue value(QtPluginMetaDataKeys k) const { return data[int(k)]; }
};
class QFactoryLoaderPrivate;
class Q_CORE_EXPORT QFactoryLoader : public QObject
{
Q_OBJECT
Q_DECLARE_PRIVATE(QFactoryLoader)
public:
explicit QFactoryLoader(const char *iid,
const QString &suffix = QString(),
Qt::CaseSensitivity = Qt::CaseSensitive);
#if QT_CONFIG(library)
~QFactoryLoader();
void update();
static void refreshAll();
#if defined(Q_OS_UNIX) && !defined (Q_OS_MAC)
QLibraryPrivate *library(const QString &key) const;
#endif // Q_OS_UNIX && !Q_OS_MAC
#endif // QT_CONFIG(library)
void setExtraSearchPath(const QString &path);
QMultiMap<int, QString> keyMap() const;
int indexOf(const QString &needle) const;
using MetaDataList = QList<QPluginParsedMetaData>;
MetaDataList metaData() const;
QObject *instance(int index) const;
};
template <class PluginInterface, class FactoryInterface, typename ...Args>
PluginInterface *qLoadPlugin(const QFactoryLoader *loader, const QString &key, Args &&...args)
{
const int index = loader->indexOf(key);
if (index != -1) {
QObject *factoryObject = loader->instance(index);
if (FactoryInterface *factory = qobject_cast<FactoryInterface *>(factoryObject))
if (PluginInterface *result = factory->create(key, std::forward<Args>(args)...))
return result;
}
return nullptr;
}
template <class PluginInterface, class FactoryInterface, typename Arg>
Q_DECL_DEPRECATED PluginInterface *qLoadPlugin1(const QFactoryLoader *loader, const QString &key, Arg &&arg)
{ return qLoadPlugin<PluginInterface, FactoryInterface>(loader, key, std::forward<Arg>(arg)); }
QT_END_NAMESPACE
#endif // QT_NO_QOBJECT
#endif // QFACTORYLOADER_P_H
|
