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Reimplementations of connectNotify() and disconnectNotify() can
assume that the signal argument is in normalized form, but after the
introduction of the Qt5 meta-object format, it could happen that it's
not.
The problem is that the internal QArgumentType class, which attempts
to resolve a typename to a type id, was calling QMetaType::type().
QMetaType::type() falls back to trying the normalized form of the
typename if the original argument can't be resolved as a type (this
behavior isn't documented, but that's how it works). This means that
e.g. QMetaType::type("const QString &") returns QMetaType::QString.
Since QMetaObjectPrivate::indexOfMethodRelative() (more specifically,
the methodMatch() helper function) prefers to compare type ids
over typenames (since the type ids are stored directly in the meta-
object data for built-in types), the method lookup would *succeed*
for signatures with non-normalized built-in typenames as parameters.
QObject::connect() would then think that it did not have to
normalize the signature (see "// check for normalized signatures").
The consequence was that the original, non-normalized form got
passed to connectNotify().
This commit introduces an internal typename-to-type function that
is the same as QMetaType::type(), except it doesn't try to normalize
the name. This way, the only place where normalization can occur in
the signature-to-meta-method processing is through the calls to
QMetaObject::normalizedSignature() in QObject::connect() itself.
The implication is that there are now cases where the method
signature will be decoded and processed twice, where processing it
once was sufficient before. On the other hand, it is consistent with
the pre-Qt5-meta-object behavior, where we predict that the
signature is already normalized, and only perform (comparatively
costly) normalization if the initial lookup fails.
Change-Id: Ie6b60f60b0f9a57ebd378d980329dac62d57bbd9
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@nokia.com>
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This API will fully replace the const char *-based connectNotify()
and disconnectNotify() in Qt5; the old functions will be REMOVED
before Qt 5.0 final.
The new implementation fixes the long-standing issue of
connectNotify() not being called when using the (internal)
index-based QMetaObject::connect() (e.g., from QML).
As with the old API, there are still two "unintuitive" behaviors
concerning disconnectNotify():
- disconnectNotify() is not called when the signal is disconnected
using the QObject::disconnect(QMetaObject::Connection) overload.
- disconnectNotify() is not called when a receiver is destroyed
(i.e., when a connection is implicitly removed).
The old versions of connectNotify() and disconnectNotify() are kept
for now, and they are still called. They will be removed once known
existing reimplementations (e.g., QtNetwork, QtDBus) have been
ported to the new API.
Change-Id: I8b4f007f3c6d89199c1ba04a3e23c8ca314e0896
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@nokia.com>
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For Qt5 we no longer want to support the older revisions due to the
dual codepaths that must be maintained, and because the format of the
meta-object data is quite different in revision 7.
The dual codepaths have been replaced by asserts that indicate the
revision in which the feature was introduced, and the older-revision
fallbacks have been removed.
It's not possible to build code generated by moc that has
revision <= 6 with Qt5 because the type of the
QMetaObject::stringdata member changed from const char * to const
QByteArrayData *. For the same reason it's not possible to build a
dynamic meta-object generator targeting revision <= 6 with Qt5.
Hence, too old meta-objects will be caught at compile time, and the
code will have to be ported to generate revision 7 (e.g., by running
Qt5's moc on the original class declaration).
Change-Id: I33f05878a2d3ee3de53fc7009f7a367f55c25e36
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@nokia.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
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Adapts QDBusMetaObject to be in sync with the moc/meta-object
changes for property and method descriptors (storing the name and
argument count of methods, and more elaborate type information).
Now that the method name is stored in the standard method
descriptor, QtDBus doesn't need to store it separately anymore,
and the QMetaObjectPrivate::rawStringData() function can be
removed.
Change-Id: I04efdbe05b52bbd85405e1713509e55308ac42da
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Bring QDBusMetaObject up-to-date with latest moc changes
(generating the string table as an array of QByteArrayData).
QDBusMetaObject now uses the same string table generator as
QMetaObjectBuilder.
The Q_CORE_EXPORT for rawStringData() will be removed once QtDBus
has been ported to the new meta-method data format (the method name
will be stored directly in the standard method descriptor, no need
for QtDBus to store it as a separate string).
Change-Id: I41165f48501b9b11c0288208cdc770926677a8aa
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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This commit introduces two significant changes to the meta-object
data format:
1) Meta-type information (QMetaType type/name) information is
stored directly in the meta-data for both properties and methods;
2) The original signature (string) of a method is no longer stored
in the meta-data, since it can be reconstructed from the method
name and parameter type info.
The motivation for this change is to enable direct access to method
names and type information (avoiding string-based lookup for types
if possible), since that's typically the information language
bindings (e.g. QML) need. (moc already had all the desired
information about methods, but it threw it away!)
This change keeps support for the older (6 and below) meta-object
revisions, but the support will be removed after a short grace
period.
The following public QMetaMethod functions have been added:
name() : QByteArray
returnType() : int
parameterCount() : int
parameterType(int index) : int
The following internal QMetaMethod function has been added:
getParameterTypes(int *types) : void
This commit extends the meta-method data to include explicit
type/name data for methods. The new data follows the existing
(5-word) method descriptors in the meta-data. The method descriptor
format was modified to enable this. First, the descriptor now
contains the meta-data index where the method's type/name information
can be found. Second, the descriptor contains the number of
parameters. Third, the descriptor has a reference to the name of the
method, not the full signature.
Each entry of a method's type/name array contains either the type id
(if it could be determined at meta-object definition time), or a
reference to the name of the type (so that the type id can be
resolved at runtime).
Lastly, instead of storing the method parameter names as a
comma-separated list that needs to be parsed at runtime (which was
how it was done prior to this commit), the names are now stored as
separate entries in the meta-object string table, and their indexes
are stored immediately after the method type info array. Hence,
parameter names can be queried through the public API without
parsing/allocating/copying, too.
Task-number: QTBUG-24154
Change-Id: Idb7ab81f12d4bfd658b74e18a0fce594f580cba3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
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Up to and including meta-object revision 6, string data have been
stored as 0-terminated C-style strings, that were made directly
accessible as const char pointers through the public API
(QMetaMethod and friends).
This commit changes moc to generate an array of QByteArrayData
instead, and adapts the QObject kernel accordingly.
Generating an array of QByteArrayData (byte array literals)
means that the strings can now be returned from public (or private)
API as QByteArrays, rather than const char *, with zero allocation or
copying. Also, the string length is now computed at compile time
(it's part of the QByteArrayData).
This commit only changes the internal representation, and does
not affect existing public API. The actual (C) string data that the
byte array literals reference still consists of zero-terminated
strings. The benefit of having the QByteArrayData array will only
become apparent in the upcoming meta-object data format change, which
changes the format of property and method descriptors.
Support for the old meta-object string data format was kept; the
codepaths for old revisions (6 and below) will be removed in a
separate commit, once all the other meta-object changes are done and
affected code has been adapted accordingly.
Task-number: QTBUG-24154
Change-Id: I4ec3b363bbc31b8192e5d8915ef091c442c2efad
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: João Abecasis <joao.abecasis@nokia.com>
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
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Because of an upcoming change to the meta-object data format, the
ability to extract parameter types from a signature will be needed by
meta-object builders (such as QMetaObjectBuilder) soon.
Change-Id: I1f21b2be41761a5db2f1a05976fad29eb3aebb03
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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14 is the number of fields (ints) in the QMetaObjectPrivate struct
as of revision 6.
Use the calculated number of fields instead, so that the code will
still be correct when more fields are added in future revisions.
Change-Id: I4f2c2bfc125f3fabc8e8caedf5c6ba6c17a34d06
Reviewed-by: Olivier Goffart <ogoffart@woboq.com>
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@nokia.com>
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qmetaobjectbuilder should generate meta-objects of the same version
as moc; in the future, when the moc version is bumped, QMOB has to
be adapted at the same time.
QMOB was generating version 4 meta-objects. This patch makes it
generate version 6 (the current version). This also fixes a bug with
using qt_static_metacall with QMOB (setStaticMetacallFunction()); it
was already using the version 6 qt_static_metacall signature, which
isn't compatible with version 4.
Also add tests that ensure that the QMOB-generated meta-object works
with real objects; in particular we want to test the codepaths in Qt
that check for version >= 4.
Change-Id: I64a151ea5c947a6f8b7a00e85a39866446c735e9
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
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As in the past, to avoid rewriting various autotests that contain
line-number information, an extra blank line has been inserted at the
end of the license text to ensure that this commit does not change the
total number of lines in the license header.
Change-Id: I311e001373776812699d6efc045b5f742890c689
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
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Replace Nokia contact email address with Qt Project website.
Change-Id: I431bbbf76d7c27d8b502f87947675c116994c415
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
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Change-Id: I02f2c620296fcd91d4967d58767ea33fc4e1e7dc
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
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This add an overload to disconnect which is symetrical to the new
syntax of connect.
It is possible to diconnect connection like this:
QObject::connect( sender, &Sender::valueChanged,
receiver, &Receiver::updateValue );
QObject::disconnect( sender, &Sender::valueChanged,
receiver, &Receiver::updateValue );
This overload only work with pointer to member function, and not static
functions or functors.
The test is copied from tst_QObject::disconnect(), just
changed the syntax of the connection and disconnection
Change-Id: Ia8f819100cb12098e32877522b97b732b1e676a8
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
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From a bool to a handle to to connection.
Also added a new overload of disconnect that disconnect a handle
This is required because with the new syntax taking lambda or functors,
it is the only way to disconnect a connection (as it is impossible to
compare functors)
The new return value is QMetaObject::Connection, it is a wrapper around
the internal QObjectPrivate::Connection.
QObjectPrivate::Connection is now reference counted.
tst_qglobal.cpp:
This test set up an internal callback, and the callback do not set any
proper connection handle (and tbh, it would be hard for it to do so).
So the returned QMetaObject::Connection is invalid, and ok is false
(Internal callbacks are only used for jambi and should probably be removed)
Change-Id: I111626fb4f47efc4db5e2ea5bff9da15f08fea7b
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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This function is only used in src/tools/moc/moc.cpp and
src/corelib/kernel/qmetaobject.cpp. We don't need to include the
static, non-inline declaration and definition every time
qmetaobject_p.h is included.
This also silences the related warning from clang:
../../../include/QtCore/5.0.0/QtCore/private/../../../../../src/corelib/kernel/qmetaobject_p.h:171:19: error:
function 'normalizeTypeInternal' is not needed and will not be emitted
[-Werror,-Wunneeded-internal-declaration]
static QByteArray normalizeTypeInternal(const char *t, const char *e, ...
^
Change-Id: I6dfb2cb4d9d82a2ae7795f91169aa62f9a5f2c2f
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>
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QtDBus requires a QVariant argument to be passed to property reads and
writes. For performance reasons QtDeclarative does not do this. By
flagging the meta object as requiring this, QtDeclarative can do so only
required.
Task-number: QTBUG-15052
Change-Id: I032c946f079523f5f10217ed56642fb315265d9f
Reviewed-on: http://codereview.qt.nokia.com/2365
Reviewed-by: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Martin Jones <martin.jones@nokia.com>
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Updated version of LGPL and FDL licenseheaders.
Apply release phase licenseheaders for all source files.
Reviewed-by: Trust Me
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This is the beginning of revision history for this module. If you
want to look at revision history older than this, please refer to the
Qt Git wiki for how to use Git history grafting. At the time of
writing, this wiki is located here:
http://qt.gitorious.org/qt/pages/GitIntroductionWithQt
If you have already performed the grafting and you don't see any
history beyond this commit, try running "git log" with the "--follow"
argument.
Branched from the monolithic repo, Qt master branch, at commit
896db169ea224deb96c59ce8af800d019de63f12
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