For transformations, regardless of whether they're currently
overloaded on rvalue-this or not, check the results of calls to const
lvalues as well as mutable rvalues.
Use the new mixed-type QCOMPARE more.
Change-Id: Ibaa436cd88b40e5c0823c3bbe5b04a9964e7e987
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
The QString API symmetry test strikes again, showing that this is
inconsistent with both QString and QByteArray, which both return empty
for empty inputs.
The fix actually makes the implementation simpler.
Extend the QStringRef test to cover null inputs, too. I can't merge
the trimmed() test in the API symmetry test until everything is
actually consistent.
[ChangeLog][QtCore][QStringRef] trimmed() now returns an empty
string-ref for an empty input. Before, it would return a null one.
Change-Id: I6b35c5f498053c4e15a4a9dd465bc696258e7393
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Anton Kudryavtsev <antkudr@mail.ru>
Less code duplication, since truncate() is the action version of
left().
This is done in preparation of adding more actions for the string
transformations we have.
Change-Id: I55027b5143ad3349d46091ac1cc3d24a9707caee
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
That's the only value for which we will guarantee a stable result across
Qt versions and across invocations of the same application on different
architectures is zero. For any other value, we reserve the right to
change the algorithm. We'll now print a warning when we detect that.
Task-number: QTBUG-47566
Change-Id: I27b55fdf514247549455fffd14b1135e10d24ab4
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: David Faure <david.faure@kdab.com>
All good.
Can't check QByteArray::startsWith(), as it is lacking the
Qt::CaseSensitivity parameter.
Change-Id: I7f2379e520617c14514fc66d8fb3413cfb7c9147
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
qstrcmp sorts null strings before empty ones, while the Qt string
classes consider them equal.
The qt_compare_strings() overload for QLatin1String was using
qstrcmp(), but is supposed to implement the semantics that Qt string
classes use, so we need to add an extra check.
Was uncovered by tests for QLatin1String::startsWith(), but added a
new test for qCompareStrings() now, which is a bit more complicated
than desired, due to the lack of QUtf8String.
Change-Id: I0493c4491df928a68861a1bc7f0962f1c870a416
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
[ChangeLog][QtTest][QCOMPARE] Now supports printing QStringViews in
case of test failures.
Change-Id: I4dc2542cd1013fd63c094c249e721d7102387bde
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
... instead of the combination with Q_OS_WIN we used so far.
This patch adapts ocurrences that are new in 5.10.
Change-Id: If392df481713e56c776c2326e0e02324a3a80c89
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Since commit bf2160e72c, we can rely on
charNN_t support in all compilers except MSVC 2013, and since that
commit, we use (in 5.10, not 5.9, yet)
!defined(Q_OS_WIN) || defined(Q_COMPILER_UNICODE_STRINGS)
when we only need charNN_t, the type, as opposed to its library
support (u16string, char_traits<char16_t>, ...).
This patch splits the Q_C_UNICODE_STRINGS macro into two, adding
Q_STDLIB_UNICODE_STRINGS for when we need std::uNNstring, leaving
Q_C_UNICODE_STRINGS for when we need just charNN_t support.
In QDebug, when constructing a QChar out of a char16_t, cast to ushort
first, since QChar(char16_t) was only officially introduced in Qt 5.10.
[ChangeLog][Potentially Source-Incompatible Changes] The internal
Q_COMPILER_UNICODE_STRINGS macro is now defined if the compiler
supports charNN_t, even if the standard library does not. To check for
availability of std::uNNstring, use the new Q_STDLIB_UNICODE_STRINGS
macro.
Change-Id: I8f210fd7f1799fe21faf54506475a759b1f76a59
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
We have two functions to get a substring without doing some
calculations involving size():
- mid(p): mid(p, size() - p)
- right(n) : mid(size() - n, n)
(left does not involve size(), so isn't in that set). What was missing
was a name for
- f(n): mid(0, size() - n)
As an action, it's called chop(), so call the transformation version
chopped().
I made chopped(n), n < 0 or n > size(), undefined, because QString(Ref)
::left() is broken[1], while the QByteArray implementation is not. This
is the only way to get consistent behavior among the three classes.
I's also the correct thing to do.
[1] instead of returning the empty string for negative indexes, it
returns the whole string.
[ChangeLog][QtCore][QString/QStringRef/QByteArray] Added chopped(n), a
const version of chop(n).
Change-Id: I6c2c5b16e0060fa924ced5860f21f2d0f23bd023
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Anton Kudryavtsev <antkudr@mail.ru>
Initialize a deleter for a new object, created by
QSharedPointer::create(), only after the object is actually
constructed.
[ChangeLog][QtCore][QSharedPointer] Fixed undefined behavior when
creating an object with QSharedPointer::create() and its conscructor
throws an exception.
Task-number: QTBUG-49824
Change-Id: I07f77a78ff468d9b45b8ef133278e8cdd96a0647
Reviewed-by: Olivier Goffart (Woboq GmbH) <ogoffart@woboq.com>
While at it, change the interface of qt_repeatCount() to just take
a single QStringView, since QStringView::mid() is so cheap. Add some
\internal docs.
[ChangeLog][QtCore][QLocale] Added toString(QDate/QTime/QDateTime)
overloads taking the format string as a QStringView.
Change-Id: Ic078796677a6db06227c8a3e276dbdb1039ceead
Reviewed-by: Anton Kudryavtsev <antkudr@mail.ru>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
The parsing code anyway operated on a QByteArray created from
toLatin1(), so expose this to the user by providing a QLatin1String
overload.
Also provide a QStringView overload, since we can. Port one user (in
qmake) to the new overload.
[ChangeLog][QtCore][QVersionNumber] Added QStringView and
QLatin1String overloads of fromString().
Change-Id: Idbff44c3997f5cfa86ea1bce8b3da4b700a3d9cc
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
These STL-compatibility functions are present on our generic
containers, but not on the string classes.
[ChangeLog][QtCore][QString/QStringRef/QByteArray/QLatin1String] Added
front() and back() for STL compatibility.
Change-Id: I536019396b319abd1e2daf9c64ebab4e7a35b334
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Like the qt_compare_strings()/qCompareStrings() split, distinguish
between the internal and exported functions.
Because of the circular dependency between qstring.h and qvector.h,
the inline toUcs4() function has to be in qvector.h.
At some point, we need to refactor the headers so qvector.h is lower
in the dependency chain than qstring.h. It's not the first time this
bites.
Change-Id: Ief9f3bd92c83cdd1f31c51c700f42e146916eefd
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
All good.
Change-Id: Id791a04fd5e2c9bc7f54660eaaa95d6db61a5674
Reviewed-by: Anton Kudryavtsev <antkudr@mail.ru>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Akin to the successful tst_QStringApiSymmetry, add such a test for
generic containers, too. Yes, we have tst_collections, but it's a
cut'n'paste mess that makes it hard to systematically perform
cross-class checks for consistency. This new test, still in its
infancy, uses templates and thus ensures that exactly the same checks
are run on all containers.
Starting out with front()/back(), which the string classes were found
to lack, we will build this test up, as we did and continue to do with
the string API one.
Change-Id: I07323340b5612ecc658232b2776d788018010d0d
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
- Alignment test was not compiling or passing on GCC / arm
- Using C++11 alignas() enforces maximum limit for the alignment, which
at least on GCC / arm is __BIGGEST_ALIGNMENT__ multiplied by 8
- On GCC 6.2.0 / x86_84, maximum alignment accepted by alignas is 128
- On GCC 5.3.0 / arm, maximum alignment accepted by alignas is 64
- This change calculates biggest tested alignment on ARM targets
and compilers supporting alignas() to the value calculated
from __BIGGEST_ALIGNMENT__
Task-number: QTBUG-55492
Change-Id: If2b70000ff9cdc5ae8c5a00e39f79efcc6ba1221
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Use the new overload directly in QXmlStream*.
Saves 129B in QtCore text size on optimized GCC 6.1 Linux AMD64
builds, even though we added two more functions.
[ChangeLog][QtCore][QString] Added arg(QStringView),
arg(QLatin1String) overloads.
Change-Id: Idf7236dcab763824593f34182e4e0b16b5ed4321
Reviewed-by: Anton Kudryavtsev <antkudr@mail.ru>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Nothing changes, we've just given 'QIntegerForSizeof<size_t>::Signed'
a better name in qglobal.h and now use it in QStringView API and
users.
Change-Id: Ibea1ae26e95b3a96708400fd4b0cd120459d57b6
Reviewed-by: Anton Kudryavtsev <antkudr@mail.ru>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
With sufficient enable_if magic, the array ctor can overload the
pointer ctor and statically determine the size of the array passed.
Consequently, remove the sizeof in QStringViewLiteral again.
Change-Id: I486baa3cafefde60ccc5f2b47eb94ee53cefe63c
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Pretty straightforward, as the implementation already used only
an iterator range internally.
Change-Id: I6e6b809329e2e2548bba6db414a3d107d09637d1
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Change-Id: If1d2cf175d51b3c02881e21937b0a2d33b78aadd
Reviewed-by: Anton Kudryavtsev <antkudr@mail.ru>
Reviewed-by: Ville Voutilainen <ville.voutilainen@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Remove most of the std::equal() tests that were used to determine
equality in pre-relational-operator-times again.
Amends a1421e4787.
Change-Id: Iff64808f5ac60861caee899d594b512b58046636
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Anton Kudryavtsev <antkudr@mail.ru>
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
The SHA3 family is a modified version of Keccak. We were
incorrectly calculating Keccak (and even *testing* Keccak!),
but claiming it was SHA3.
To actually calculate SHA3, we need invoke Keccak on the original
message followed by the two bits sequence 0b01, cf. §6.1 [1].
[1] http://dx.doi.org/10.6028/NIST.FIPS.202
[ChangeLog][QtCore][QCryptographicHash] QCryptographicHash now
properly calculates SHA3 message digests. Before, when asked
to calculate a SHA3 digest, it calculated a Keccak digest instead.
Task-number: QTBUG-59770
Change-Id: Iae694d1a1668aa676922e3e00a292cddc30d3e0d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
We want to prevent
QStringView(QChar|QLatin1String|QByteArray|const char*)
from compiling as QStringView(QString(...)), so I added = delete'ed
ctors for these types to QStringView. However, that makes QStringView
participate in overload resolution for these types. Even if the
QStringView ctor will always fail to compile, the presence of these
ctors alone makes calls to functions overloaded on QString and
QStringView ambiguous:
f(QStringView);
f(QString);
f(foo); // ambiguous
f(QChar('f')) // ambiguous
f(QLatin1String(foo)); // ambiguous
f(QByteArray(foo)); // ambiguous
Fix by making the QString and QStringRef constructors templates
constrained to accept only these two types. This should also help to
move the QStringView definition to before the QString one (as soon as
we get rid of or start to ignore QString::Null), simplifying a lot of
code in qstring.h down the line.
This should also fix MSVC's accepting of two user-defined conversions
which caused static non-compile-tests to fail in the initial
QStringView patch, and which were therefore removed. This patch brings
them back.
Change-Id: I95ac38c0d31cd8c726f7e952017569d32e484413
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
The returned data is in US-ASCII (or else Latin-1), and resides in
consecutive memory. We can therefore return it in a QLatin1String,
which, however, will in general not be NUL-terminated.
Many users use the return value as part of a QStringBuilder
expression, and those which are not are not pessimized further by
this change.
The caller in qtimezoneprivate_icu looks as if it could simply zero
-terminate the return value and use it as-is, as opposed to
converting to UTF-8, but I left the code equivalent to the original
just the same.
Change-Id: I0e628af8c1320fcff8d0aacf160e859681d2b85a
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
QStringView is a simple container for (const QChar*, int) and (const
char16_t*, size_t). It acts as a replacement interface type for const
QString and const QStringRef, and enables passing all kinds of
string-like types to functions otherwise expecting const QString& -
without the need to convert to QString first.
The use of this new class is guarded by a macro that enables three
levels of QStringView support:
1. offer QStringView, overload some functions taking QString with
QStringView
2. like 1, but remove all overloads of functions taking QStringRef,
leaving only the function taking QStringView. Do this only where
QStringRef overloads tradionally existed.
3. like 2, but replace functions taking QString, too.
This is done in order to measure the impact of QStringView on code
size and execution speed, and to help guide the decision of which
level to choose for Qt 6.
This first patch adds QStringView with most of its planned
constructors, but not much more than iterators and isNull()/isEmpty().
Further patches will add support for QStringView to QStringBuilder,
add QStringView overloads of functions taking QString, and add the
complete API of const QString to QStringView.
[ChangeLog][QtCore][QStringView] New class, superseding const QString
and QStringRef as function parameters, accepting a wide variety of
UTF-16 string data sources, e.g. u"string", std::u16string{,_view},
and, on Windows, L"string", std::wstring{,_view} without converting to
QString first.
Change-Id: Iac273e46b2c61ec2c31b3dacebb29500599d6898
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
... to avoid the expensive conversion from QString to QL1S.
[ChangeLog][QtCore][QStringList] Added contains(QLatin1String) overload.
Change-Id: Ie75839ce9e46e03fe5155a02c7dcf00277b95c8d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
