This will allow us to make changes in QtCore itself, without having to
worry about moc compatibility.
The output uses an #ifdef so this version of moc can still be used to
compile earlier versions of Qt (usually, in cross-compilation
environments). See discussion in the mailing list[1].
[1] https://lists.qt-project.org/pipermail/development/2021-September/041732.html
Change-Id: I2de1b4dfacd443148279fffd16a39784c80c5f3b
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Hopefully we won't need it but let's have it still at least for
consistency
Change-Id: I72289e65e5e5613174ad4d98cf8d614f9caae8e6
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
[ChangeLog][QtCore][QMetaMethod] It is now possible to query the
constness of a method with QMetaMethod::isConst.
Change-Id: I8a94480b8074ef5b30555aeccd64937c4c6d97d4
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
This function returns the metatype corresponding to the metaobject, or
an invalid metatype for namespaces.
This works as follows: First we increment the metaobject revision for
new metaobjects. Metaobjects with older revisions are handled by doing a
lookup by name. That fallback is also used for dynamic metaobjects (from
QtDBUS and those created by QMetaObjectBuilder).
For new metaobjects, we store the metatype in its metatype array, behind
the property metatypes. This avoids any changes to the property and
method metatype extraction logic: For properties, the metatype access
does not change, as the new metatype is after their metatypes. For
method metatypes, we already have an indirection layer (using offsets),
so by adjusting those offsets by one, the same logic keeps working.
To distinguish between namespaces and dynamic metaobjects, namespaces
store the metatypeinterface pointer for void in the metatype array,
whereas dynamic metaobjects store a nullptr.
One nice additional benefit is that this simplifies the generator logic
in moc, as the metatype array is now never empty.
Task-number: QTBUG-92077
Change-Id: Id3f920f28553f12032a71a1a87dad29e5374dbe7
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
And add a QMultiHash::unite(const QHash &) method to avoid
a copy of the data when inserting a QHash into a multi hash.
Change-Id: I864aa9d2b9b7b2c367c3c4d140a2ce2f5408ae09
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This change allows the user to use -Wextra-semi-stmt without a warning.
A macro should never include a ; by it's own. Macro Q_UNUSED already
adds semicolon.
Fixes: QTBUG-82978
Pick-to: 5.15
Change-Id: I6d8d009cf89f0c8bbb6a9fee986e81302ebd7459
Reviewed-by: hjk <hjk@qt.io>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
In a macOS environment, Clang throws a number of compiler warnings
about loop variables when building qtbase.
See task for more info about the environment.
This changes a handful of loop variables,
like QJsonValue references into QJsonValueRefs.
Task-number: QTBUG-87216
Pick-to: 5.15
Change-Id: I26006efd7c75c2d56ebc7f7efb4c9bdcabe92e8b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Various places in moc relied on the magic behavior of QByteArray, that
provided a non-null pointer to a null byte when the byte array was
null, resulting in crashes when QT5_NULL_STRINGS is turned off. Fixed
them to cope with this (and optimised out some pointless effort, when
empty QByteArrays are involved, in the process).
Change-Id: I617a878eb2e9ac8be244080efa1f0de4ac9a68a2
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
If we require complete types when generating the list of metatypes, then
we also need to require them when generating each entry, and vice versa.
Change-Id: I68394f8628bb6cd89f77bb829b1d4b5ab35071a0
Reviewed-by: Fawzi Mohamed <fawzi.mohamed@qt.io>
For QML, we like to avoid doing string to type lookups at runtime as
much as possible. Therefore, QML registration macros like QML_ELEMENT
now cause moc to require complete types not only for properties, but
also for all methods known to the metatype system.
Change-Id: Ied3d940c102719db4852d3a748d05be1f415b353
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Add a new BINDABLE declaration to the Q_PROPERTY() macro that tells moc
where to find the QBindable for the property.
Add a QUntypedBindable base class to QBindable<T> that gives access to
generic functionality and checks argument compatibility at runtime.
QBindable<T> will still do static checking at compile time.
Add QMetaProperty::isBindable() and QMetaProperty::bindable()
to be able to dynamically access the binding functionality.
Change-Id: Ic7b08ae2cde83fd43e627d813a886e1de01fa3dc
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
And all related functionality. This is being replaced by
Q_BINDABLE_PROPERTY and Q_OBJECT_BINDABLE_PROPERTY in the
next few commits. The new infrastructure coming will play
nicer along with the existing property system.
Commented out some autotests, that will get reimplemented
with the updated infrastructure.
Change-Id: I50c30bd4d5c6c6b6471f8eb93870e27d86f5a009
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
And don't use int based type mapping anymore.
Change-Id: I456e76d1933ef646a7bd39ce565886b89e938a44
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
And remove one of the type id to name mapping that still
existed in QMetaType. QMetaTypeInterface can provide that,
so there's no need to have a second copy of the data.
qMetaTypeTypeInternal() can still map all the names of all
builtin types to ids. That functionality is for now still
required by moc and can't be removed yet.
Change-Id: Ib4f8e9c71e1e7d99d52da9e44477c9a1f1805e57
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Left the translation NOOP for later, pending advice on how to fix
QIODevice, which doesn't compile without them.
Task-number: QTBUG-85700
Change-Id: Icc423ecabb43714d98b5d9b0f9a96c5bb6ef1d78
Reviewed-by: Martin Storsjö <martin@martin.st>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Introduce a Q_OFFSETOF() macro that uses the optional support of
offsetof() for non standard layout types and disables the
corresponding compiler warnings. All our supported compilers
support offsetof() on non standard layout types.
Use the macro to do the offset calculations required in moc
generated code to replace a manual offset calculation that
was dereferencing a null pointer.
Change-Id: I4aab3af3c8bbaa90372f2234aa1cf8399d023c22
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
When the compile time metatype support for methods was introduced, we
needed to allow incomplete types to avoid breaking a large amount of
code. However, this mistakenly enabled using incomplete types for
properties, too. In contrast to methods, properties lack the fallback
code to retrieve the metatype at runtime. Thus, this commit restores the
completeness requirement for properties again. This is done by always
calling QMetaTypeForType for properties in qTryMetaTypeForType.
Amends fa987d4441
Change-Id: I5f66ff289631c056eecebe40926bf321d283eea7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Allows defining multiple static plugins in the same translation unit.
Change-Id: I175fd4980b21a461a18c23ed1a62a3cea73e67a0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Previously, only QNotifiedProperty was supported. As moc cannot
determine by itself whether the backing property is a QProperty or a
QNotifiedProperty, allow NOTIFY false to indicate that it is a plain
QProperty. For symmetry, NOTIFY true is also allowed and means that the
backing property is a QNotifiedProperty.
Change-Id: I66f3105c976ef084198ce8658bc07499a3cb1cd8
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
This way we can return a nullptr for cases where the class does not want
to provide a property at all. For example outside of bindings when
reading the default value. The moc-generated code can check for such
nullptrs and handle them.
Change-Id: I7ff478cb254012147bb7aed3feb160e3e679cb6d
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
If you pass "STORED false" the name is interpreted as function to be
invoked in order to access the property. This allows storage of a
property in a lazily allocated data type.
Change-Id: I4d3a9cac6985c6419ce687868cb74b91921595a6
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Created a QByteArrayView in symmetry with QStringView.
Added the basic tests symmetrical to QStringView tests.
Moved the implementations of non-modifying methods of QByteArray to
namespace QtPrivate, to be reused inline from both QByteArray and
QByteArrayView. Changed QByteArray's counterparts of those methods to
take QByteArrayView as argument instead of QByteArray. Removed
QByteArray's operator QNoImplicitBoolCast(), because it was causing
ambiguity when calling those methods with QByteArray argument (it was
there to perevnt if(!ba)/if(ba) from compiling, but currently that would
be ambiguous and won't compile anyway).
[ChangeLog][QtCore][QByteArrayView] New class.
Task-number: QTBUG-84321
Change-Id: I05f92e654cf65c95f2bb31b9c9018746ac110426
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
The change creates a slight source incompatibility. The main
things to take care of are
* code using printf statements on list.size(). Using qsizetype in
printf statements will always require a cast to work on both 32
and 64 bit.
* A few places where overloads now get ambiguous. One example is
QRandomGenerator::bounded() that has overloads for int, uint and
double, but not int64.
* Streaming list.size() to a QDataStream will change the format
depending on the architecture.
[ChangeLog][QtCore][QList] QList now uses qsizetype to index into
elements.
Change-Id: Iaff562a4d072b97f458417b670f95971bd47cbc6
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This addresses two issues:
1. The generated code for QNotifiedProperty<T, ...> was broken when T is
a pointer. Notably, const S* & is not a constant reference to S*.
This is addressed by consistently using T const& instead of const T&.
2. The Q_PRIVATE_QPROPERTY approach assumed that the property name and
the getter are equal. This does break when they are not, and we are
unable to change either of them due to API compatibility concerns. An
example of this would be QQuickItem's parent property with a
parentItem getter. Therefore, we now allow the usage of NAME to
override the name of the property.
Change-Id: Idf2e85576c74371b5b0f6db15dbe6f2d17c5e33d
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Change the meaning of Q_PRIVATE_QPROPERTY to imply that the property is
implemented using a QNotifiedProperty. That requires passing the owner
object instance to the value and binding setters.
Similarly, detect QNotifiedProperty members like QProperty.
Change-Id: If49bbb04c8ccd4a661973888c50d2d556c25034f
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
This changes the layout of the meta object data, so
also bump the meta object revision.
Original-patch-by: Lars Knoll <lars.knoll@qt.io>
Change-Id: I176fb16c207e8ebe59e358e69554be813406232f
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Property flags should be compile time booleans, not something to
be determined at runtime.
We've been using this to dynamically disable some properties in QWidget
based classes dependent on the state of a different property, but this
should better get implemented on top of our widgets.
Change-Id: I6296e8761303ecdf24d9e842142e8596304c015d
Reviewed-by: Simon Hausmann <hausmann@gmail.com>
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
This does the analog of 46f407126e for the
methods we care about (signals, slots, Q_INVOKABLEs). In addition to the
actual QMetaType, we store an array with offsets so that we later can do
a mapping from methodIndex to metatype.
The newly added QMetaMethod::{return,parameter}MetaType methods can then
be used to retrieve the metatypes.
This does however require that all involved types are complete. This is
unfortunately not a feasible requirement. Thus, we only populate the
metatype array on a best effort basis. For any incomplete type, we store
QMetaType::Unknown. Then, when accessing the metatype, we fall back to
the old string based code base if it's Unknown.
Squashes "moc: support incomplete types" and "Fix compile failures
after QMetaMethod change"
Fixes: QTBUG-82932
Change-Id: I6b7a587cc364b7cad0c158d6de54e8a204289ad4
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
The API reduces the amount of manual plumbing required to offer a
conceptual property through the traditional setter/getter API as well as
through QProperty<T> API. Since the latter would require inlining the
type and thus making it impossible to add new properties without
breaking binary compatibility, this patch introduces a fake API that
behaves similar but does not contain the property by value.
Change-Id: Ib9bccd867f0e4e36a520e5583ba348e728284253
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Recently the moc learned that Q_PROPERTY(int x ...) can mean that "x" is
implemented as QProperty and then allows installing bindings, etc. -
this works by scanning the same class' members.
For our own use of QProperty, we need to place the QProperty member
itself into the d-pointer to be able to maintain the ability to add new
properties without breaking binary compatibility. That however means
that moc can't know that a certain property is backed by QProperty - we
don't scan the members of the private class.
As a workaround, this change enables the syntax where the property type
used in Q_PRIVATE_PROPERTY may be wrapped with QProperty<T>.
In addition this patch fixes the compilation of such declared properties
by ensuring the accessor prefix (t->$accessor) is applied also for the
QProperty related meta call variants.
Change-Id: I8fbdc49319048b57f4eb0b65b56daba0459e9598
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
At the moment this makes the type as well as the setter/getter available
through the meta-call as well as the ability to register observers and
bindings. Only QProperty members that are annotated with
Q_PROPERTY(type name) are made public through the meta-object.
Change-Id: I16b98fd318122c722b85ce61e39975284e0c2404
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
So far, objects had no identification, and both gadgets and namespaces
were called "gadget". qmltyperegistrar, however, is especially
interested in the distinction between namespaces and anything else.
Task-number: QTBUG-68796
Change-Id: Ic5739727bdef7766de6e535c6568920198fadb2b
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
This is meant to correspond to required properties in QML.
Change-Id: I2645981e13f7423bc86b48370c165b3cfe2aaa62
Task-number: QTBUG-81561
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Conflicts:
src/corelib/tools/qvector.h
Make QVector(DataPointer dd) public to be able to properly merge
5b4b437b30 from 5.15 into dev.
src/widgets/kernel/qapplication.cpp
tests/auto/tools/moc/allmocs_baseline_in.json
Done-With: Christian Ehrlicher <ch.ehrlicher@gmx.de>
Change-Id: I929ba7c036d570382d0454c2c75f6f0d96ddbc01
This is a step towards deprecating QHash::insertMulti() and clearly
separating QHash and QMultiHash.
Change-Id: Ic2c7665673ff00d4f2186e94850710b70330f8ba
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
This patch fixes the QMetaObject::superClass hierarchy for Q_GADGETs
that inherit from a template which in turn inherits another Q_GADGET.
One common scenario where this is applied is for the CRTP. Without this
patch, moc would stop at the template and then sets the superClass
QMetaObject to a nullptr. For QObjects this works, since there moc knows
that every child must by definition inherit QObject. In order to support
this for Q_GADGETs too, we defer the judgment about the availability
of a staticMetaObject in the base class to compile time through the
existing QtPrivate::MetaObjectForType<Base>::value() helper.
[ChangeLog][QtCore][moc] Moc now correctly sets a non-null
QMetaObject::superClass for Q_GADGETs that inherit from a template which
inherits another Q_GADGET.
Change-Id: I103b5efd74ed24172dffce477ca2ed6d0f374d44
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
Don't store our string data as QByteArrayLiterals anymore, but revert
back to simply storing them as an array of char* and offsets into that
array.
This is required to be able to inline size and begin into QByteArray
itself. Once that change is done, we can then avoid creating copies of
the string data again.
Change-Id: I362a54581caefdb1b3da4a7ab922d37e2e63dc02
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Since I can't #include qobjectdefs from qnamespace because of circular dependency,
move the Qt macro in the qtmetamacros.h header.
Deprecate QObject::staticQtMetaObject since now one can just use Qt::staticMetaObject
Change-Id: I11982aa17c2afa2067486b113f8052672f3695eb
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Move away from using 0 as pointer literal.
Done using clang-tidy. This is not complete as
run-clang-tidy can't handle all of qtbase in one go.
Change-Id: I1076a21f32aac0dab078af6f175f7508145eece0
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
This is currently being used by dbus und our state machine framework,
and supported by hand editing moc generated code.
Get rid of that hack, and instead add support to moc to forward
the raw arguments array to the slot.
Change-Id: I0e36626f91eb01041464e6d931dc1d4660de91d2
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Windows has a problem relating to cross-DLL variable relocations: they
are not supported. Since QMetaObject's link to the parent class is done
via a pointer, every QMetaObject in a DLL or in the EXE that derives
from a class from another DLL (such as QObject) will be dynamically
initialized.
This commit changes the meta object pointers in QMetaObject::d from raw
pointers to a wrapper class SuperData, which is almost entirely source-
compatible with the pointer itself. On all systems except for Windows
with Qt 6, it's binary compatible with the current implementation.
But for Windows with Qt 6, this commit will store both the raw pointer
and a pointer to a function that returns the QMetaObject, with one of
them non-null only. For all meta objects constructed by moc, we store
the function pointer, which allows the staticMetaObject to be statically
intialized. For dynamic meta objects (QMetaObjectBuilder, QtDBus, QtQml,
ActiveQt), we'll store the actual raw pointer.
[ChangeLog][QtCore][QMetaObject] Some internal members of the
QMetaObject class have changed types. Those members are not public API
and thus should not cause source incompatibilities.
The macro QT_NO_DATA_RELOCATION existed in Qt 4 but was called
Q_NO_DATA_RELOCATION and only applied to Symbian. It was removed in
commit 24a72c4efa ("qglobal: Remove
symbian specific features").
Task-number: QTBUG-38876
Fixes: QTBUG-69963
Change-Id: Id92f4a61915b49ddaee6fffd14ae1cf615525e92
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Thiago Macieira
Andrei Golubev
Fabian Kosmale
Lars Knoll
André Klitzing
David Skoland
Allan Sandfeld Jensen
Edward Welbourne
Ulf Hermann
Tor Arne Vestbø
Sona Kurazyan
Jarek Kobus
Simon Hausmann
Qt Forward Merge Bot
Olivier Goffart
Liang Qi
Milian Wolff