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Small improvement to the code by using an enum instead of a boolean.
Change-Id: Ib792cf97224b5204fd36ca215387fc7be34f2c32
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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We can do the (atomic) test of studyData before locking the mutex
protecting the entire function body.
Change-Id: I3006e3a0028608f21668ddaebe8a799aed56362f
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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If a user doesn't like that QRegularExpression might do an
uncontrolled CPU/memory spike when it decides to optimize a pattern,
offer a way to disable the automatic optimization.
Change-Id: I38a98a3bfb239cfad9f977b0eeb75903268e747f
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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The fact that we kick in a pattern study and possibly a JIT compilation
after an undocumented number of usages is suboptimal, for a number
or reasons: users may want to JIT compile a pattern immediately,
and at the same time they may not want a random delay in the program
(due to the pattern getting optimized at a random usage).
So: add an optimize() call to force an immediate pattern optimization,
and a pattern option to force an optimization on the first usage.
Change-Id: I95efdecfd31f11ca7cceb9c05037df613601a11c
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Change-Id: Iee03fff5971712c3eb51a32d632cb1a6c276699c
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
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Task-number: QTBUG-38034
Change-Id: I0edc1c0b5e3be5fd12a91007b68e5eff7ccc7e40
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
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Sizes gained (measured on 64-bit systems)
BezierEase: shrunk 8 bytes
QRegExpCharClass: shrunk 8 bytes
QRegularExpressionPrivate: shrunk 8 bytes
QTimeLinePrivate: shrunk 8 bytes
QUtcTimeZonePrivate: shrunk 8 bytes
QTextStreamPrivate: shrunk 8 bytes
QDirPrivate: shrunk 8 bytes
QFileDevicePrivate: shrunk 8 bytes
Not done:
QRegExpEngine: 18 bytes in 6 holes (you deserve high memory usage if
you're still using QRegExp)
QTextBoundaryFinder: 8 bytes in 2 holes (public class)
QIODevicePrivate: 6 bytes in 2 holes, but there's no gain in packing
QProcessPrivate: too complex and my copy is modified
QThreadData: awaiting change from Marc
Change-Id: I2a388b5ce17dec0dafcef18ed2e80d0379aa7d1e
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Default values should have mark-up to denote that they are code.
This commit changes:
-"property is true" to "property is \c true".
-"Returns true" to "Returns \c true".
-"property is false" to "property is \c false".
-"returns true" to "returns \c true".
-"returns false" to "returns \c false".
src/3rdparty and non-documentation instances were ignored.
Task-number: QTBUG-33360
Change-Id: Ie87eaa57af947caa1230602b61c5c46292a4cf4e
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
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Fixes warnings when -Wpedantic is enabled
Change-Id: I8fcfbfa9bb3a5ab61c85f8cb74660f6f7e459fc0
Reviewed-by: Gunnar Sletta <gunnar.sletta@digia.com>
Reviewed-by: Alejandro Exojo Piqueras <suy@badopi.org>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
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Consider the following situation:
- threads A and B have shallow copies of the same QRegularExpression
- threads A and B both call match() on a string
- thread A calls optimizePattern(), which doesn't optimize
- thread B calls optimizePattern(), which does optimize, and sets
studyData
- thread A uses studyData (set by B)
A needs to properly acquire the memory pointed by studyData
(which, in turn, needs to be released by B). This commit implements that.
(Before, we used to return a copy of the current studyData from
optimizePattern(), so A didn't see that B optimized the pattern
and set studyData).
Change-Id: I9e4741a3d3229905c247491a07099519815680bb
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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We need to clarify what's the status of the implicit capturing
group #0 in both of this methods. The former doesn't include it,
while the latter does for convenience/consistency in the way
we count the capturing groups.
(Note that this last behavior is actually autotested.)
Change-Id: I2170842c2a6dffa34fa56389ceead61a92c07cd1
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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(?J) inside a pattern string can be used to allow or disallow duplicated
capturing group names in the pattern string itself.
Although PCRE supports duplicated names, in Qt we don't yet.
Change-Id: I21cd0c41273cd7ef42870ced3a0fad6ba7035cbc
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Information about the pattern (number of capturing groups, newline
settings, etc.) are grabbed when the pattern is compiled the first time.
Studying (=> optimizing) is always done later, after a certain amount
of usages. In case this ever changes, add an assert.
Besides, we're not grabbing any info that require studying the pattern
first.
Change-Id: Ica15fa21f7bf13213288d7090d3396a89900078e
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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It may be useful to know which named capturing groups are defined
in an regular expression, and for each of them, what's the
corresponding index. This commit adds the needed method
to QRegularExpression.
Note that extracting the information doesn't happen while holding
the mutex in the private -- pcre_fullinfo just reads information
from the compiled pattern, so that's thread-safe.
Task-number: QTBUG-29079
Change-Id: I50c00ee860f06427c2e6ea10417d5c0733cc8303
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Conflicts:
src/corelib/io/qsavefile_p.h
src/corelib/tools/qregularexpression.cpp
src/gui/util/qvalidator.cpp
src/gui/util/qvalidator.h
Change-Id: I58fdf0358bd86e2fad5d9ad0556f3d3f1f535825
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The pcre(3) man page says that the 4th argument of pcre_fullinfo,
when requesting PCRE_INFO_OPTIONS, should point to an unsigned
long int variable.
Change-Id: I72cd5ab208687715329566556c5f279db57f7872
Reviewed-by: Richard J. Moore <rich@kde.org>
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Change-Id: Ic804938fc352291d011800d21e549c10acac66fb
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
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This allows to put them in containers, and to enable subsequent
features for QString.
Change-Id: I3b3fe695ffe6930331ed9f670738376722e0fc36
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Explicitely pass the number of capturing groups for which the
offsets should be reserved in the capturedOffsets vector,
instead of relying on it adding 1 (for the implicit capturing
group #0).
In case 0 is passed, don't allocate any space for that vector.
This is being used in case of NoMatch match type or failing
match (invalid regexp, out of bounds offset, etc.).
Change-Id: I0ec7646d5bd53e7a7973177100b163a5e5030307
Reviewed-by: Jędrzej Nowacki <jedrzej.nowacki@digia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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This match type doesn't do any match at all; it's only necessary to
properly introduce default constructors for QRegularExpressionMatch
and QRegularExpressionMatchIterator (since they return the match type
that created them).
Change-Id: Ibfe92459c7fdd23129cf3afe073cd443c461ddeb
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
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They are introduced in PCRE 8.31.
Change-Id: Id0447b381d5e23996d4e87ae0368b07a8bc1c318
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@digia.com>
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Change copyrights and license headers from Nokia to Digia
Change-Id: If1cc974286d29fd01ec6c19dd4719a67f4c3f00e
Reviewed-by: Lars Knoll <lars.knoll@digia.com>
Reviewed-by: Sergio Ahumada <sergio.ahumada@digia.com>
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Change-Id: Id57b7932afb89fe9d3f4f6e6c3b558265475d77b
Reviewed-by: Stephen Kelly <stephen.kelly@kdab.com>
Reviewed-by: Casper van Donderen <casper.vandonderen@nokia.com>
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Change-Id: I19100755c97cc155c76a859e19940e9f9222d34e
Reviewed-by: Casper van Donderen <casper.vandonderen@nokia.com>
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Change-Id: I19d3b2e9a5180b13deb828b55195404ef20be295
Reviewed-by: Daniel Teske <daniel.teske@nokia.com>
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
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Change-Id: I2325bcab9bb80e5507f53887b282a859d0fdb58c
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
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This change fixes most qdoc errors in QtCore. There are about 900 left.
The main thing this change does is moving documentation from qtcore from
/doc/src to /src/corelib/doc.
Other issues resolved are mis-use of qdoc commands.
Change-Id: I002d01edfb13575e8bf27ce91596a577a92562d1
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
Reviewed-by: Jason McDonald <jason.mcdonald@nokia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@nokia.com>
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Fixed a bug in qdoc that caused too many end elements to be generated.
Also fixed some doc errors that caused invalid DITA to be generated.
Task nr: QTBUG-25302
Change-Id: Ifbbf457d28c51c2691a252888447739da7713bc9
Reviewed-by: Martin Smith <martin.smith@nokia.com>
Reviewed-by: Casper van Donderen <casper.vandonderen@nokia.com>
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PCRE doesn't like illegal Unicode sequences (it's explicitely
documented in pcreunicode(3) that they trigger undefined behaviour,
and the program may crash). Therefore, we always let PCRE check
the validity of both the pattern and the subject string.
However, when performing global matching, the subject string
can be checked only once: subsequent matches can safely skip the check
and avoid a huge performance hit of scanning the whole subject
string for each match (!).
This patch implements that behaviour internally -- it's still
not possible for the user to skip the sanity check. On large
subject strings, this gives a terrific performance benefit.
Change-Id: Ia44cf18782e07966c9cd6ec4ccfef081ed131763
Reviewed-by: Robin Burchell <robin+qt@viroteck.net>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Avoid building a QStringList and then joining the strings with pipes;
directly append the flags to a QByteArray instead.
Change-Id: Ic352b756ed1e3b6b579b9ca412636a2b394d2eb5
Reviewed-by: hjk <qthjk@ovi.com>
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Change-Id: I683afb24f888ab6cf3c543fba8cd193a730709af
Reviewed-by: Casper van Donderen <casper.vandonderen@nokia.com>
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Added the error strings from PCRE to be picked up by lupdate,
to enable translations.
Change-Id: Iaeabde5d7a17f9a0273511e0741e67a097d23a98
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@nokia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
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Although passing a null pointer to pcre16_get_stringnumber for
the compiled pattern should simply make it error out, it's actually
an undocumented behaviour, so let's stay safe and add an explicit
check.
Tests for this codepath are added.
Change-Id: Ifd9c87874f6812ba487104ec1a5bbc83c3b16761
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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PCRE's JIT uses by default 32K on the pcre_exec caller's stack. This
is fine for most situations, but in some cases (esp. patterns with
lot of recursion) more memory is required.
Therefore, if a match execution fails due to exhausting JIT memory,
we let PCRE allocate up to 512KB to be used for the JIT's stack.
The pointer to the allocated memory is put in thread local storage
(so it can be reused from the same thread, if needed, and automatically
goes away when the thread dies).
Change-Id: Ica5fb7d517068befff88ebb198a603a26ec5d8a7
Reviewed-by: Bradley T. Hughes <bradley.hughes@nokia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Exporting the counter that controls the optimization of a compiled
pattern lets us to forcibly optimize all patterns. Therefore,
two tests are now run: one with default optimization values
and another one which always optimizes the pattern.
The counter itself was renamed with a qt_ prefix and put
inside the Qt compilation namespace
(thanks to rohanpm for pointing it out).
Change-Id: I56602433d37adc127772b2d0d2cdaf2e49d43c71
Reviewed-by: Rohan McGovern <rohan.mcgovern@nokia.com>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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The studyData pointer is atomically set by the pointer assignment,
but another processor running a different thread might see the
new studyData value but not the memory it points to.
Therefore, the current studyData is returned from optimizePattern
and used by that thread.
Docs were added to optimizePattern to explain what's going on.
Change-Id: I4502c336077bb98a1751011aa93ffd4f585ed101
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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Removes the usage of various qdoc macros which are now deprecated.
Change-Id: I74fa70f8d2a2a1bff57cdb2bcc14a31a7198dea0
Reviewed-by: Casper van Donderen <casper.vandonderen@nokia.com>
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Adding some const qualifiers to members which are never written.
Change-Id: Ibb8953764c7b7790a419a5d48f2956751d5fc1f9
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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QRegularExpression::captureCount() returns the number of
capturing groups inside the regular expression pattern.
Change-Id: Ib90ce67c67d06ab2966f0c98bd91da21defc156d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
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PCRE's JIT uses self-modifying code extensively, requiring full SMC
checks enabled by tools like valgrind, which slow down the execution
considerably; not enabling SMC checks lead to crashes.
Therefore, JIT is now disabled by default in debug builds of Qt.
Its usage (both in debug and release builds) can be controlled
by setting the QT_ENABLE_REGEXP_JIT environment variable.
Change-Id: Ib38952400e4219582942ce65ab9edcd89c432f3e
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
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Trivial change: compare dpointers first, then the data.
Added test function for operator==.
Change-Id: I33ac64a59db4ccad56c30be17622187e42415f38
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
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Added the proper QDebug operator to debug the
QRegularExpression::PatternOptions flags.
Change-Id: Icd00e93a0c6cc4345db528d494fc176624f7b7a2
Reviewed-by: hjk <qthjk@ovi.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
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Added QRegularExpression, QRegularExpressionMatch and
QRegularExpressionMatchIterator as PCRE-enabled, regexp classes.
Documentation is included, as well as a first round of autotests.
Task-number: QTBUG-23489
Change-Id: Id47031b80602c913ccd2fd740070e3024ea06abc
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Lars Knoll <lars.knoll@nokia.com>
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