diff options
| author | Marc Mutz <marc.mutz@kdab.com> | 2016-05-14 07:32:03 +0200 |
|---|---|---|
| committer | Marc Mutz <marc.mutz@kdab.com> | 2016-05-15 10:00:19 +0000 |
| commit | c7d4858c921c7602dc90d56cdd903cd2cb1111c6 (patch) | |
| tree | bded1070ae6ea559e086c76a3ef9ce1cb22683bf /src/dbus | |
| parent | 432d3b696296db9131bfa3daa67285f0eaedec41 (diff) | |
QDBusArgument: deprecate relying on a streamable Base to stream a Derived
This was seen in the wild for QList, but, as described
in the documentation note, it's a common problem.
[ChangeLog][QtDBus][QDBusArgument] Deprecated relying on a streamable
Base to stream a Derived without providing operator<</>>() for Derived.
No diagnostic provided.
Task-number: QTBUG-53376
Change-Id: If845574f731b537c20641dc7c49fa4369e85db5a
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Diffstat (limited to 'src/dbus')
| -rw-r--r-- | src/dbus/qdbusmetatype.cpp | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/src/dbus/qdbusmetatype.cpp b/src/dbus/qdbusmetatype.cpp index 5696290ed3..59a71ade3e 100644 --- a/src/dbus/qdbusmetatype.cpp +++ b/src/dbus/qdbusmetatype.cpp @@ -177,7 +177,7 @@ Q_GLOBAL_STATIC(QReadWriteLock, customTypesLock) \snippet code/src_qdbus_qdbusmetatype.cpp 0 - If \c{T} isn't a type derived from one of + If \c{T} isn't one of Qt's \l{container classes}, the \c{operator<<} and \c{operator>>} streaming operators between \c{T} and QDBusArgument must be already declared. See the \l {qdbustypesystem.html}{Qt D-Bus @@ -187,6 +187,14 @@ Q_GLOBAL_STATIC(QReadWriteLock, customTypesLock) This function returns the Qt meta type id for the type (the same value that is returned from qRegisterMetaType()). + \note The feature that a \c{T} inheriting a streamable type (including + the containers QList, QHash or QMap) can be streamed without providing + custom \c{operator<<} and \c{operator>>} is deprecated as of Qt 5.7, + because it ignores everything in \c{T} except the base class. There is + no diagnostic. You should always provide these operators for all types + you wish to stream and not rely on Qt-provided stream operators for + base classes. + \sa {qdbustypesystem.html}{Qt D-Bus Type System}, qRegisterMetaType(), QMetaType */ |