Change-Id: I22a4c86034b399782115bb078c298b211095476a
Reviewed-by: Christian Ehrlicher <ch.ehrlicher@gmx.de>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>
Use QStringIterator rather than indexed loops. This fixes handling of
non-BMP code points (which may be lower or uppercase, see the test).
Change also the semantics of the functions, adopting Unicode §3.13
definitions: a string is lowercase/uppercase if it's equal to its
own toLower/toUpper folding.
As a side effect, empty strings are now correctly reported to be
lowercase AND uppercase.
[ChangeLog][Important Behavior Changes] The semantics of
QString::isLower() and QString::isUpper() have been changed to match the
Unicode specification. Now lowercase (resp. uppercase) strings are
allowed to contain any character; a string is considered lowercase
(resp. uppercase) if it's equal to its own toLower() (resp. toUpper())
folding. Previously, a non-letter character would make the string not
lowercase nor uppercase, and the mere presence of an uppercase (resp.
lowercase) letter would make isLower() (resp. isUpper()) return false,
even if the letter wouldn't change under case folding. As a
consequence, now empty strings are lowercase and uppercase.
[ChangeLog][QtCore][QString] Fixed a number of bugs of
QString::isLower() and QString::isUpper(). Empty strings are now
correctly reported to be lowercase (resp. uppercase), and strings
containing code points outside the BMP are now correctly handled.
Note that the behavior of these functions has also been changed.
Change-Id: Iba1398279a072399a9f21295fe75f6e414f3f813
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The expression "a + offset + N" will eventually calculate an address
past the end of a, since we are comparing to end. That's undefined
behavior. Instead, calculate end - a and compare that to offset + N.
This commit subtracts "a" from both sides of the inequalities and swaps
the two sides to make them obey Qt coding style. Testing with GCC 9
(which is the only one I care about) shows the compiler generates the
same code.
Fixes: QTBUG-81218
Change-Id: Id84da383373844f3a4b0fffd15e7c1ab904daccd
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
QString(View)s can be built or manipulated in ways that make them
contain/refer to improperly encoded UTF-16 data. Problem is,
we don't have public APIs to check whether a string contains
valid UTF-16. This knowledge is precious if the string is to be fed in
algorithms, regular expressions, etc. that expect validated input
(e.g. QRegularExpression can be faster if it can assume valid UTF-16,
otherwise it has to employ extra checks).
Add a function that does the validation.
[ChangeLog][QtCore][QStringView] Added QStringView::isValidUtf16.
[ChangeLog][QtCore][QString] Added QString::isValidUtf16.
Change-Id: Idd699183f6ec08013046c76c6a5a7c524b6c6fbc
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The SSE code can read slightly outside the bounds of the string.
This is ok, as it's limited to 16 byte boundaries and thus can't
cause a segfault. But it does cause a crash with asan.
Change-Id: Id6e4a550579dc6228f365357773b392ecfd41471
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
We're now using the same infrastructure for QVector,
QString and QByteArray.
This should also make it easier to remove the shared null
in a follow-up change.
Change-Id: I3aae9cf7912845cfca8e8150e9e82aa3673e3756
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Vitaly Fanaskov <vitaly.fanaskov@qt.io>
Preparations to move QString over to use QArrayDataPointer instead
of it's own private struct.
Change-Id: I7796a595393394083f6a85863e3c710ebbdea149
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
The goal here is to move things over to QArrayDataPointer. This prepares
for it.
Change-Id: I32f54a47594274799600c618f7341c200ceaa306
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
We already detach immediately since change
c2d2757bcc. That basically removes
the main purpose of having QChar/ByteRef, and we can just as well
get rid of those classes for Qt 6.
Change-Id: I8dc566a1948ddc29c0cb8a77ec7310654a7219a4
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
I'd have preferred to use QArrayDataPointer<ushort> for QString, but
that option wasn't the best one. QArrayDataPointer try to do some
operations using QArrayDataOps and that would expand to unnecessary
code. What's more, the existing code expected to be able to modify and
access the d pointer.
Instead, this commit introduces QStringPrivate (named differently from
QStringData to catch potential users), which contains the three
members. This POD class is also used in QJsonValue to store the
"inlined" QString. QHashedString in qtdeclarative will need a similar
solution.
Change-Id: I33f072158e6e2cd031d4d2ffc81f4a8dbaf4e616
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Those make no sense and where probably only there to workaround
bugs in some old compilers.
Change-Id: I5b196cc5306ac1c6307257b70179278d82d383c1
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This requires that the allocation functions return two pointers: the d
pointer and the pointer to the actual data.
Ported QArrayDataPointer & SimpleVector to the inlined size & data.
For now, the size and offset members are not yet removed from
QArrayData, to let QVector, QByteArray and QString compile unmodified.
Change-Id: I8489300976723d75b8fd5831427b1e2bba486196
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Instead of using the reference count to store whether the data is
sharable and whether the header is immutable, move the settings to the
flags member. This allows us to save one comparison per deref() or
needsDetach(). It also allows for the possibility of mutable data
pointed to by a static header.
Change-Id: Ie678a2ff2bb9bce73497cb6138b431c465b0f3bb
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
The next change will stop using some values in the reference counter as
settings from the data.
Change-Id: I94df1fe643896373fac2f000fff55bc7708fc807
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
The Mutable flag now contains the information on whether the data this
QArrayData points to is mutable. This decouples the mutability /
immutability setting from the allocation and from the type of data,
opening the way for mutable raw or foreign data.
There are still plenty of places in the source code that check the
size of the allocation when it actually wants d->isMutable(). Fixing
this will require reviewing all the code, so is left for later.
The needsDetach() function is moved to QArrayData and
de-constified. It returns true when a reallocation is necessary if the
data is to be modified.
Change-Id: I17e2bc5a3f6ef1f3eba8a205acd9852b95524f57
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
These flags allow us to determine what type of data QArrayData is
carrying. There are currently only two supported types:
- raw data type: constructed via fromRawData or static data
- allocated data type: regular data done via heap allocation
The QArrayData object is usually allocated on the heap, unless its own
reference count is -1 (indicating static const QArrayData). Such
object should have a type of RawDataType, since we can't call free().
Add GrowsBackward for completeness as well as the StaticDataFlags
default for static data.
Change-Id: Icc915a468a2acf2eae91a94e82451f852d382c92
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
In almost all cases, use d->allocatedCapacity() or
d->constAllocatedCapacity() instead of d->alloc, since they do the
same thing (right now). In the future, the functions will be
changed. There is a separate const version because most const code
should not need to know the allocation size -- only mutating code
should need to know that
There are a few cases where d->alloc was replaced with a better
alternative, like d->size. The one case that remains in the code will
be replaced by a different test when it's available.
Change-Id: I48135469db4caf150f82df93fff42d2309b23719
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
Rename to QArrayData::ArrayOptions in preparation for these flags
being in the array itself, instead of used just for allocating new
ones.
For that reason, rename QArrayData::Default to
DefaultAllocationFlags. And introduce QArray::DefaultRawFlags to mean
the flags needed for creating a raw (static) QArrayData.
Also rename QArrayData::Grow to GrowsForward, so we may add
GrowsBackward in the future.
Change-Id: I536d9b34124f775d53cf810f62d6b0eaada8daef
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
The call to data() on a non-const QString led to a detach(), which is
unexpected and unwanted from QString::lastIndexOf() const.
Found by looking at why QFileSystemEntry::fileName() was expensive, in
the hotspot profiler.
The solution is to instanciate QLastIndexOf with QStringView() rather
than QString(). I added a deleted QString overload to make sure nobody
ever instanciates it with a QString argument again.
Change-Id: I06a1b2f937425e83f0779eb215e099aef78c50a7
Reviewed-by: Anton Kudryavtsev <antkudr@mail.ru>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
These were added since we couldn't add default parameters in the Qt 5 lifetime.
Change-Id: Idf04df78cc7f56c6c1dc1fe6c07e30003350ed0d
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Vitaly Fanaskov <vitaly.fanaskov@qt.io>
The assumption when calling QStringRef::toString() on a null
QStringRef (i.e. when QStringRef::isNull() is true) is that
QStringRef::toString().isNull() will also return true. With the
current implementation we return a null QString() only when the
QStringRef references a nullptr QString. We need to do the same
also when QStringRef references a QString with null private data.
Change-Id: I4177a5ea187ae758d7c46fe76a9d0583140e90cb
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Instead of four pairs of :1 :15 bit fields, use an array of four :1,
:15 structs. This allows to replace the case folding traits classes
with a simple enum that indexes into said array.
I don't know what the WASM #ifdef'ed code is supposed to effect (a :0
bit-field is only useful to separate adjacent bit-field into separate
memory locations for multi-threading), but I thought it safer to leave
it in, and that means the array must be a 64-bit block of its own, so
I had to move two fields around.
Saves ~4.5KiB in text size on optimized GCC 10 LTO Linux AMD64 builds.
Change-Id: Ib52cd7706342d5227b50b57545d073829c45da9a
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Qt Forward Merge Bot
Andre Hartmann
Giuseppe D'Angelo
Liang Qi
Thiago Macieira
Lars Knoll
David Faure
Frederik Gladhorn
Sona Kurazyan
Marc Mutz
Edward Welbourne