Commit Graph

4190 Commits

Author SHA1 Message Date
Edward Welbourne
948511a143 Turn badly-named test into two data rows of another test
Since ancient times, tst_QDateTime::fromString_LOCALE_ILDATE() has
claimed to be Windows-only, although there is nothing MS-specific
about it; its name also purports to implicate locale, which it
doesn't. Turn it into two data rows for the more general
fromStringDateFormat() test, with no extra #if-ery about it.

Change-Id: I239c0f80f8f7fa42d498a0f801cc8edfb1db3d8c
Reviewed-by: Andrei Golubev <andrei.golubev@qt.io>
Reviewed-by: Mitch Curtis <mitch.curtis@qt.io>
2020-05-29 16:58:43 +02:00
Simon Hausmann
36f6922925 Implement support for QProperty<T> with a static observer
A common pattern in Qt Quick will be QProperty members that are
connected to a callback that needs to perform something when the value
changes, for example emitting a compatibility signal or marking scene
graph node data dirty.

To make such a pattern more efficient, a new QNotifiedProperty type is
introduced that offers the same API as QProperty<T>, with two changes:

    (1) The template instantiation not only takes the property type as
    parameter but also a callback pointer-to-member.

    (2) Since that member itself cannot be called without an instance
    and to avoid storing an instance pointer permanently, the API for
    setBinding and setValue are adjusted to also take the instance
    pointer. For the former it gets stored in the binding, for the
    latter it is used to invoke the callback after setting the new
    value.

Change-Id: I85cc1d1d1c0472164c4ae87808cfdc0d0b1475e1
Reviewed-by: Ulf Hermann <ulf.hermann@qt.io>
2020-05-28 21:08:51 +00:00
Edward Welbourne
449b347644 Rework QLocale and QDateTime tests that expect CET abbreviation
The name CET is locale-dependent; but QLocale doesn't know about
localization of time zone names. Such abbreviated zone names are, in
any case, potentially ambiguous - various zones around the world have
collisions - so they can't be relied on.

QTimeZone's various backends have differing handlings of how to
abbreviate zone names (MS's provides no abbreviated names at all); and
it appears macOS actually follows the relevant localizations.

So it is hopeless to hard-code the expected zone abbreviations.
Changed the tests to consult QTimeZone for the abbreviation and
compare what it gets with the results of checks which should match
this. This is less stringent, but it is at least robustly correct,
thereby getting rid of assorted kludges and #if-ery.

Pick-to: 5.15
Task-number: QTBUG-70149
Change-Id: I0c565de3fd8b5987c8f5a3f785ebd8f6e941e055
Reviewed-by: Tor Arne Vestbø <tor.arne.vestbo@qt.io>
2020-05-28 15:15:17 +02:00
Andrei Golubev
cfbb30decd Make QDateTimeParser recognize local time offsets
Fixes: QTBUG-84209
Pick-to: 5.15
Change-Id: Iedbc7beafcaa55c72fec3ac5a5f519c6ed5f7770
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2020-05-28 11:48:57 +03:00
Ulf Hermann
a64a0ce331 Add a QPropertyAlias
A property alias is the equivalent of the "alias" keyword in QML. It
provides the same API as QProperty, but redirects any access to the
QProperty it was initialized with. When the original property is
destroyed the binding becomes invalid and ignores any further acccess.

Task-number: QTBUG-84370
Change-Id: I0aef8d50e73a2aa9e7703d51194d4c5480573578
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-05-27 14:41:52 +02:00
Volker Hilsheimer
ee92ee7a3c Remove deprecated QProcess methods
Add default parameter for arguments in start, startDetached, and
execute for better source compatibility with Qt 5.15. This has the risk
of then hiding incorrect calls to the previous overload taking a single
"command" strings if code is ported from pre-5.15 or ignores deprecation
warnings. This is acceptable, given that the alternative is that all
calls to these functions would require a default constructed QStringList
as the second parameter.

Change-Id: I1ba4df97ac4894d007da5083c8359015d784ddbb
Reviewed-by: Joerg Bornemann <joerg.bornemann@qt.io>
2020-05-27 11:55:06 +02:00
Ulf Hermann
524d781607 QProperty: Support multiple observers
Previously, only the first observer would get notified. Also, make sure
that the notifiers are always retained when switching between bindings
and values.

Change-Id: I9c25c0f2e288dac3a335b68e618f7ddeb44be25a
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
2020-05-27 11:54:30 +02:00
Ulf Hermann
36bd34dbdc QProperty: Apply coding style and avoid warnings
Change-Id: I14efdb293a4be39b3849b34bd8013fdab016ce7e
Reviewed-by: Simon Hausmann <hausmann@gmail.com>
2020-05-27 11:54:16 +02:00
Sona Kurazyan
d7d6a1fe32 Don't queue events in QFutureWatcher when pause is requested
When QFutureWatcher (or QFutureInterface) is paused, it doesn't
mean that it will take effect immediately: the pending tasks may
still be in progress and keep reporting results. At the moment
QFutureWatcher will queue those events and report only with the
next resume. This behavior is wrong, QFutureWatcher should not
decide when to report events, the sender should decide when is the
right time. There's no benefit in reporting already happened events
with delay. Because of this, even the pause event itself was being
reported after resume.

Fixed the behavior by removing the logic of queueing events when
the state is set to "paused". It seems unlikely that the users of
QFutureWatcher rely on reporting events with delay.

[ChangeLog][Important Behavior Changes][QtCore] QFutureWatcher will not
immediately stop delivering progress and result ready signals when the
future is paused. At the moment of pausing there may be still computations
that are in progress and cannot be stopped. Signals for such computations
will be still delivered after pause, instead of being postponed and
reported only after next resume.

Fixes: QTBUG-12152
Change-Id: I9f0b545ac096578c52cc72d60575c018c01e3368
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
2020-05-27 11:53:28 +02:00
Giulio Camuffo
7db527dbdd Add a property to QSFPM to show children of accepted items
[ChangeLog][QtCore][QSortFilterProxyModel] Add a 'autoAcceptChildRows'
property to always show children rows of accepted rows.

Change-Id: I2402469ece438179d0f19888b9775cc27cf5c749
Reviewed-by: David Faure <david.faure@kdab.com>
2020-05-26 15:11:40 +02:00
Tony Sarajärvi
623670d243 Blacklist tst_QTimer::zeroTimer on Ubuntu 20.04
Task-number: QTBUG-84291
Change-Id: I198cfe813617a5bb65b0e1059a43b6933d610720
Reviewed-by: Liang Qi <liang.qi@qt.io>
2020-05-25 05:16:00 +00:00
Kari Oikarinen
afdfb08e3a Remove references to deleted file shift-jis.txt
Amends 33bb695a28.

Change-Id: I7a7d90dc406ffbf015e760a7c41534564bfbe13e
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-05-24 22:24:47 +03:00
Lars Knoll
2f05aa82e7 Adjust resize() behavior of QString and QByteArray to match Qt 5
resize() to a smaller size does not reallocate in Qt 5 if the container
is not shared. Match this here.

As a drive-by also fix resize calls on raw data strings to ensure
they are null terminated after the resize.

Change-Id: Ic4d8830e86ed3f247020d7ece3217cebd344ae96
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
2020-05-21 17:59:31 +02:00
Liang Qi
2cd6d76d68 Merge remote-tracking branch 'origin/5.15' into dev
Conflicts:
	src/corelib/text/qbytearray.cpp

Change-Id: I63706409464d31391012bacdadfd1f6300509787
2020-05-18 08:52:33 +02:00
Marc Mutz
3df3bdcdb3 QTaggedPointer: verify constexpr'ness of some ctors
Change-Id: I44196ba3a823ce04b7c82aacfb9da301cc0f1886
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-05-16 08:55:28 +02:00
Sona Kurazyan
1a5cc8d13d Add support of cancellation handler callbacks to QFuture
Added QFuture::onCanceled() method, for attaching handlers to be called
when the QFuture gets canceled.

Change-Id: I1f01647d6173ba0c1db6641e14140108b33ac7c4
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
2020-05-15 22:35:30 +02:00
Sona Kurazyan
612f6999c8 Add support of connecting signals to QFuture
Introduced QtFuture::connect(sender, signal) function returning a
QFuture object, which is resolved when the signal is emitted.

Task-number: QTBUG-81589
Change-Id: Idbe301eb247b468b9b34f3470c3359d6a7af2f3a
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
2020-05-15 22:35:06 +02:00
Fabian Kosmale
794150e5bd QMetaType: Support char16_t and char32_t
Change-Id: Ieec6d4bc64967d875ea12b31638aab05bc682ea3
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-05-15 18:46:39 +02:00
Marc Mutz
b655734965 QString: fix an aliasing issue in remove(QString)
Even in Qt 5, remove() can be passed an alias to *this. In Qt 6, with
the advent of substring sharing, this will become even more
pronounced. Use the same fix as was already used in QString::insert().

Pick-to: 5.15
Change-Id: I1a0d3d99fd7dff6e727661646d2cbfdc94df2682
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2020-05-15 03:00:45 +00:00
Marc Mutz
3b7f278d38 tst_qstringref: remove some wtf?
As best as I can guess, this used the QString::operator=(char), which
I locally removed. Before that lands in Qt, remove this ... wtf?

Pick-to: 5.15
Change-Id: Ie083fe69500d6b5b633416f89f5dd1d7068c20b2
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2020-05-14 20:30:35 +00:00
Giuseppe D'Angelo
9e1dc1e8a9 QStringView: add converting constructor from array-like containers
Centralize, rather than keeping adding constructors from any
array-like container.

A more robust implementation, likely following the converting
constructor for std::span ([span.cons]), is out of scope for C++17
and will require C++20's ranges and concepts.

[ChangeLog][QtCore][QStringView] QStringView can now be constructed
from any contiguous container, as long as they hold string-like data.
For instance, it's now possible to create a QStringView object
from a std::vector<char16_t>, a QVarLengthArray<ushort> and so on.

Change-Id: I7043eb194f617e98bd1f8af1237777a93a6c5e75
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
2020-05-14 12:19:47 +00:00
Giuseppe D'Angelo
594abde1a2 Enforce that statically allocated array-like containers have 0 capacity
It has been the case for both QStringLiteral and QByteArrayLiteral
since Qt 5.0, and Q_ARRAY_LITERAL since Qt 6.0.

Since it's definitely surprising, add a note in the docs, which
is "somehow" consistent with the interpretation of capacity as
the biggest possible size before we reallocate. Since it's 0,
any manipulation of the size will cause a reallocation.
(Alternatively: the capacity() is for how many elements memory was
requested from the free store. No memory was allocated, so 0...)

Task-number: QTBUG-84069
Change-Id: I5c7d21a22d1bd8b8d9b71143e33d537ca0224acd
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-05-14 14:19:47 +02:00
Lars Knoll
45ed28a9d3 Remove QRegExp from QVariant
Add an operator QVariant() to QRegExp to keep things at source compatible
as possible.

Add a hack to QVariant::load/save() to recognize the old typeid
for QRegExp and stream them correctly as long as the streaming operators
for QRegExp are registered.

Also move the datastream test for QRegExp to tst_qregexp, and adjust it to
the qvariant changes.

Change-Id: I120b38a7541b43ec07a21b17f7f35c55f071eb75
Reviewed-by: Fabian Kosmale <fabian.kosmale@qt.io>
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
2020-05-14 12:19:47 +00:00
Lars Knoll
b2ee684a13 Remove QRegExp support from QString and StringList
Replacement methods do now exist in QRegExp, or
for QRegularExpression when porting to it.

Remove all autotests associated with the old methods.

Change-Id: I3ff1e0da4b53adb64d5a48a30aecd8b960f5e633
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-05-14 14:19:47 +02:00
Lars Knoll
7370b60cfe Move methods using QRegExp in QString(List) over to QRegExp
The prepares for the removal of those methods from QString and
QStringList. The new methods in QRegExp are left as a porting help.

Change-Id: Ieffa33a79caf53b83029e9b070c4eb5cadca1418
Reviewed-by: Mårten Nordheim <marten.nordheim@qt.io>
2020-05-14 14:19:47 +02:00
Qt Forward Merge Bot
76fe36645e Merge remote-tracking branch 'origin/5.15.0' into 5.15
Change-Id: I06396fa0a3d1687a0935e48d290358edbb0e59e8
2020-05-14 14:01:32 +02:00
Lars Knoll
57037145f5 Streamline the code in the conversion to and from utf8
Move pre/and post condition handling out of the main loop
to make that one as fast as possible.

Remove special handling of a corner case when the input length
is zero, where the utf8 decoder did something else than all
other decoders.

Change-Id: I94992767ea15405b38f7953adadaa6ff98b20b6f
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-05-14 07:51:45 +02:00
Lars Knoll
2b8863a98c Get rid of some QTextCodec leftovers
There's no real dependency to QTextCodec in those files anymore.

Change-Id: Ifaf19ab554fd108fa26095db4e2bd4a3e9ea427f
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-05-14 07:51:20 +02:00
Lars Knoll
9515d45f88 Remove QTextCodec dependency from test
Change-Id: Ie546065c3179d475df46b284ca7df502c4465b93
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-05-14 07:50:49 +02:00
Lars Knoll
124d587bb9 Document the string converter classes
Document QStringConverter, QStringDecoder and QStringEncoder.

In addition, do some touches to the API, renaming one enum value,
add a flags argument to one constructor and make some members private.

Change-Id: I8f99dc3d98fb8860cf6fa46301e34b7eb400511b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-05-14 07:50:29 +02:00
Lars Knoll
4d67b9dcfb Get rid of QTextCodec in QTextStream
Use QStringConverter instead. Also change the default
encoding of QTextStream to utf8.

Change-Id: I30682e75fe0462d1a937539f773640c83a2d82e1
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-05-14 07:50:19 +02:00
Lars Knoll
33bb695a28 Start porting QTextStream away from QTextCodec
As a first step add setEncoding/encoding() methods that use the
QStringConverter::Encoding enum, and port all uses of setCodec()/
codec() over to the new API.

Internally QTextStream still uses QTextCodec, this will be ported
over to QStringConverter in a follow-up change.

Change-Id: Icd764cf47b449b57f4ebd010c2dad89e6717d6c0
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-05-14 07:50:13 +02:00
Lars Knoll
b8db123341 Add a method to determine the encoding for encoded HTML data
This is a replacement for Qt::codecForHtml().

Change-Id: I31f03518fd9c70507cbd210a8bcf405b6a0106b1
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-05-14 07:49:05 +02:00
Lars Knoll
13af1312f7 Add QStringConverter::encodingForData()
Add method that tries to determine the encoding of the data
from an initial byte order mark.

Change-Id: I348c51a3d4db9b434af53359b739a7e17acfc760
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-05-14 07:48:55 +02:00
Lars Knoll
a639bcda1e Add methods to convert between encoding and name to QStringConverter
Add static methods that allow converting between a name for an
encoding and the Encoding enum.

Change-Id: I12bc503cf757ea31d3ca8d5e1f1216efddcb16d4
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-05-14 07:48:49 +02:00
Lars Knoll
3ce9162ab5 Construct a string converter by name
Add a constructor, that allows constructing a string converter by
name. This is required in some cases and also makes it possible to
(in the future) extend the API to 3rd party encodings.

Also add a name() accessor.

Change-Id: I606d6ce9405ee967f76197b803615e27c5b001cf
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-05-14 07:48:42 +02:00
Lars Knoll
a383d79772 Get rid of QSettings::iniCodec()
Always encodee INI files as utf-8 in Qt6. This is mostly backwards
compatible, as old ini files would encode all non ascii characters.

[ChangeLog][Important behavioral changes] QSettings will now always
encode INI files as utf-8 (and the iniCodec/setIniCode methods are
removed). This is a change from Qt 5 and earlier, where QSettings would
by default escape all non ascii characters. The behavior is equivalent to
what you got in Qt5 by setting a utf-8 iniCodec on the settings object.
Settings files written in Qt 5 will still be readable in Qt 6 (unless
an iniCodec different from utf-8 was used), but to read Qt6 based ini
files in Qt 5 applications, setting the iniCodec to utf-8 is required.

Change-Id: Ic7dffcca17779bd5e3dae50d42ce633170289f6c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Alex Blasche <alexander.blasche@qt.io>
2020-05-14 07:48:28 +02:00
Lars Knoll
940665eff5 Add some incremental tests
Feed the data one by one to the encoder or decoder to
verify that the handling of incremental decoding is
correct.

Change-Id: I565e4f1872e00859026334f7662b6778772e159d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-05-14 07:48:13 +02:00
Lars Knoll
cab0d57d1e Clean up the Flag handling in QStringConverter
IgnoreHeader was a rather badly defined enum, in addition the
utf8 and utf16 codecs where handling BOMs somewhat different
for stateless decoding.

Fix this by introducing explicit flags for writing a bom when
encoding and not skipping the initial bom when decoding.

Source compatibility for QTextCodec is done with a couple of
static constexpr variables.

Change-Id: I0b2d94f84c937cec1e0494c16ef448c00382691d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-05-14 07:47:33 +02:00
Lars Knoll
2c7f9565ed Always write XML documents as UTF-8
Remove support for setting a codec different from UTF-8
for writing XML files.

All XML readers today can handle UTF-8, and there is no
reason anymore to write a file in a different encoding.

Change-Id: If89fb2d2474a2b55644d9bed7473c11ad91033eb
Reviewed-by: Simon Hausmann <hausmann@gmail.com>
2020-05-14 07:47:06 +02:00
Lars Knoll
f64a6bd638 Start work on a new API to replace QTextCodec
The new QStringEncoder and QStringDecoder classes
(with a common QStringConverter base class) are
there to replace QTextCodec in Qt 6.

It currently uses a trivial wrapper around the utf
encoding functionality.

Added some autotests, mostly copied from the text codec
tests.

Change-Id: Ib6eeee55fba918b9424be244cbda9dfd5096f7eb
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-05-14 07:46:14 +02:00
Marc Mutz
a504f63f2e Port qt_punycodeEncoder() to QStringView
Change-Id: I264e67bc08413f8a39e2d16c774bfd2c76c320ac
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-05-13 13:22:09 +00:00
Marc Mutz
90f864a4c5 QString: remove op+=(char) and op+=(QChar::SpecialCharacter)
The former messes in bad ways with the overload set (it, fatally,
attracts char16_t, e.g.). The latter was probably added in response to
ambiguities between (char) and (QChar). While it's harmless now,
remove it, since it no longer pulls its weight.

The no-ascii warning is now coming from QChar(char), so the protection
isn't lost.

[ChangeLog][QtCore][QString] The += operators taking char and
QChar::SpecialCharacter have been removed as they cause adding a
char16_t to QString to call the char overload, losing information. The
append() function was not affected.

Change-Id: I57116314bcc71c0d9476159513c0c10048239db3
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-05-13 14:38:48 +02:00
Marc Mutz
b49314af1d Port qt_check_std3rules() to QStringView
Also port its callees. These functions scream to the QStringView-ified...

Change-Id: I13c95d65941eb8d02223306d80efd1437b4bd9b7
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-05-13 08:04:40 +02:00
Marc Mutz
548dcef089 Port qt_urlRecode() to QStringView
It's about time :)

Change-Id: I27e597516318382850d4c193fd5b66a35fb9c316
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-05-12 23:04:42 +02:00
Andrei Golubev
bed25fdf60 Teach QDateTimeParser some common time-zone offset formats
Fixes: QTBUG-83687
Fixes: QTBUG-83844
Pick-to: 5.15
Change-Id: Ia1c827017b93cf8277aa5a0266805d773d2d9818
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2020-05-12 12:45:58 +03:00
Marc Mutz
23849826b4 Sweep of int-ish → char-ish types near calls to QString::fromU*()
The fromUtf16(ushort*) and fromUcs4(uint*) overloads are going
to be deprecated. Use the newer fromUtf16(char16_t*) and
fromUcs4(char32_t*) overloads.

As a drive-by, use std::end()/std::size() where applicable.

Change-Id: I5a93e38cae4a2e33d49c90d06c5f14f7cb7ce90c
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-05-12 05:43:37 +00:00
Marc Mutz
b62bff2ef3 Use QChar::fromUcs4() more
Change-Id: I02be41de92d84145186de9ac5f5ea3541a941964
Reviewed-by: Konstantin Ritt <ritt.ks@gmail.com>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-05-12 07:43:34 +02:00
Andrei Golubev
b428e98052 Make qtbase compile without QT_CONFIG(timezone)
Fixes: QTBUG-83795
Pick-to: 5.15
Change-Id: I05eaaf57d87a9111d3609ebab81bc707f8af98f0
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2020-05-11 14:42:00 +03:00
Marc Mutz
928d57d8da QChar: add fromUcs{2,4}()
The fromUcs2() named ctor is designed to replace all the non-char
integral-type constructors of QChar which make it very hard to control
the implicit QChar conversions, which have caused a few bugs in Qt
itself. As a classical named contructor, it simply returns QChar.

The fromUcs4() named "ctor", however, needs to expand surrogate pairs,
and thus can't just return QChar. Instead, it returns a small struct
that contains one or two char16_t's, can be iterated over and be
implicitly converted to QStringView.  To avoid bikeshedding the name
(FromUcs4Result, of course :), it's defined inline and thus can't be
named outside the function. This function replaces most uses of
QChar::requiresSurrogates() in QtBase.

[ChangeLog][QtCore][QChar] Added fromUcs2(), fromUcs4().

Change-Id: I803708c14001040f75cb599e33c24a3fb8d2579c
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-05-09 06:26:08 +00:00