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3 ** Copyright (C) 2016 The Qt Company Ltd.
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6 ** This file is part of the QtDBus module of the Qt Toolkit.
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38 ****************************************************************************/
39
40 #ifndef QDBUSMETATYPE_H
41 #define QDBUSMETATYPE_H
42
43 #include <QtDBus/qtdbusglobal.h>
44 #include "QtCore/qmetatype.h"
45 #include <QtDBus/qdbusargument.h>
46
47 #ifndef QT_NO_DBUS
48
49 QT_BEGIN_NAMESPACE
50
51
52 class Q_DBUS_EXPORT QDBusMetaType
53 {
54 public:
55 typedef void (*MarshallFunction)(QDBusArgument &, const void *);
56 typedef void (*DemarshallFunction)(const QDBusArgument &, void *);
57
58 static void registerMarshallOperators(int typeId, MarshallFunction, DemarshallFunction);
59 static bool marshall(QDBusArgument &, int id, const void *data);
60 static bool demarshall(const QDBusArgument &, int id, void *data);
61
62 static int signatureToType(const char *signature);
63 static const char *typeToSignature(int type);
64 };
65
66 template<typename T>
qDBusMarshallHelper(QDBusArgument & arg,const T * t)67 void qDBusMarshallHelper(QDBusArgument &arg, const T *t)
68 { arg << *t; }
69
70 template<typename T>
qDBusDemarshallHelper(const QDBusArgument & arg,T * t)71 void qDBusDemarshallHelper(const QDBusArgument &arg, T *t)
72 { arg >> *t; }
73
74 template<typename T>
75 int qDBusRegisterMetaType(
76 #ifndef Q_QDOC
77 T * /* dummy */ = nullptr
78 #endif
79 )
80 {
81 void (*mf)(QDBusArgument &, const T *) = qDBusMarshallHelper<T>;
82 void (*df)(const QDBusArgument &, T *) = qDBusDemarshallHelper<T>;
83
84 int id = qMetaTypeId<T>(); // make sure it's registered
85 QDBusMetaType::registerMarshallOperators(id,
86 reinterpret_cast<QDBusMetaType::MarshallFunction>(mf),
87 reinterpret_cast<QDBusMetaType::DemarshallFunction>(df));
88 return id;
89 }
90
91 QT_END_NAMESPACE
92
93 #endif // QT_NO_DBUS
94 #endif
95