Commit Graph

19 Commits (e8a711ef3bf9875a249f338da28afb60f2617c78)

Author SHA1 Message Date
Lucie Gérard 05fc3aef53 Use SPDX license identifiers
Replace the current license disclaimer in files by
a SPDX-License-Identifier.
Files that have to be modified by hand are modified.
License files are organized under LICENSES directory.

Task-number: QTBUG-67283
Change-Id: Id880c92784c40f3bbde861c0d93f58151c18b9f1
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Jörg Bornemann <joerg.bornemann@qt.io>
2022-05-16 16:37:38 +02:00
Thiago Macieira 705ea62f9e QJsonValueConstRef: prepare for Qt 7
Instead of storing a pointer to the QJsonArray or QJsonObject (like the
Qt 4 & pre-5.15 versions did), do like QCborValueConstRef and store the
pointer to the QCborContainerPrivate.

Unlike QCborValueRef, we must keep the is_object bit because of API
behavior that assigning an Undefined to an object reference deletes it
from the container. I've chosen to use size_t instead of qsizetype for
this because then we don't lose any bits of the index. Therefore, the
index in the case of objects is stored as pair count (like before),
different from QCborValueRef which stores the actual index in the
QCborContainerPrivate.

It's the LSB (on little-endian architectures) so the calculation of
2 * index + 1 is the actual value stored in memory or in the
register. Unfortunately, right now, both Clang and GCC don't realize
this and generate unnecessary instructions. Clang:

0000000000000000 <QJsonValueConstRef::concreteType(QJsonValueConstRef)>:
   0:   mov    %rsi,%rax
   3:   shr    %rax
   6:   mov    %rsi,%rcx
   9:   or     $0x1,%rcx
   d:   test   $0x1,%sil
  11:   cmove  %rax,%rcx

[GCC code is identical, except it uses an AND instead of TEST]

That OR at offset 9 is a no-op because it sets a bit that is already set
in those conditions. At least they don't do unnecessary shifts.

Change-Id: I89446ea06b5742efb194fffd16bb7aadb6a9b341
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
2022-02-15 17:00:05 -08:00
Thiago Macieira 01fe59a3b7 QJsonObject::removeAt: stop dividing and multiplying by 2
Change-Id: I89446ea06b5742efb194fffd16bb7d17182c6a2a
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2022-02-15 17:00:05 -08:00
Thiago Macieira dccd1e87f5 QJsonValueConcreteRef: optimize concrete()
Inline the content to avoid a round-trip through qjsonarray.cpp and
qjsonobject.cpp.

This change revealed an inadviseable unit test check that dereferences
the end() iterator to get its type. I haven't changed it, but have
marked with ###. I also fixed a likely copy&paste mistake in that test.

Change-Id: I89446ea06b5742efb194fffd16bb774f3bfbe5f5
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
2022-02-15 17:00:04 -08:00
Sona Kurazyan 35d90cb898 Resolve the remaining open ### Qt6 comments of QJsonValue
Changed QJsonValue to use QCborValue for data storage. Removed unused
internal methods.

Task-number: QTBUG-85700
Change-Id: I784fc7c0c4407f79eb7ca87a1f5116f00c26155d
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-08-20 17:25:09 +02:00
Sona Kurazyan af5e8c2e97 Use qsizetype for size in QJsonArray and QJsonObject
Change-Id: I126b7e817f076486910777bb4e3354487ad670cd
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2020-08-18 04:06:04 +02:00
Sona Kurazyan 1df02b5f98 Fix conversions to JSON from QVariant
After reimplementing Qt JSON support on top of CBOR, there were
unintended behavior changes when converting QVariant{, List, Map} to
QJson{Value, Array, List} due to reusing the code for converting
QVariant* types to CBOR types, and from CBOR types to corresponding JSON
types. In particular, conversions from QVariant containing QByteArray to
JSON has been affected: according to RFC 7049, when converting from
CBOR to JSON, raw byte array data must be encoded in base64url when
converting to a JSON string. As a result QVariant* types containing
QByteArray data ended up base64url-encoded when converted to JSON,
instead of converting using QString::fromUtf8() as before.

There were also differences when converting QRegularExpression.

Reverted the behavior changes by adding a flag to internal methods for
converting CBOR to JSON, to distinguish whether the conversion is done
from QVariant* or CBOR types. These methods now will fall back to the old
behavior, if the conversion is done using QJson*::fromVariant*().

Additionally fixed QJsonValue::fromVariant conversion for NaN and
infinities: they should always convert to QJsonValue::Null. This works
correctly when converting from variant to QJsonArray/QJsonObject, but has
been wrong for QJsonValue.

Added more tests to verify the expected behavior.

[ChangeLog][Important Behavior Changes] Restored pre-5.15.0 behavior
when converting from QVariant* to QJson* types. Unforeseen consequences
of changes in 5.15.0 caused QByteArray data to be base64url-encoded; the
handling of QRegularExpression was also unintentionally changed. These
conversions are now reverted to the prior behavior. Additionally fixed
QJsonValue::fromVariant conversions for NaN and infinities: they should
always convert to QJsonValue::Null.

Fixes: QTBUG-84739
Change-Id: Iaee667d00e5363906eedbb67948b7b39c9d0bc78
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2020-08-13 19:36:58 +02:00
Jarek Kobus 0475460102 Use QList instead of QVector in corelib
Applied to headers only. Source file to be changed separately.
Omitted statemachine for now to avoid conflicts.
Omitted qmetatype.h for now - to be handled later.

Task-number: QTBUG-84469
Change-Id: I317376037a62467c313467d92955ad0b7473aa97
Reviewed-by: Sona Kurazyan <sona.kurazyan@qt.io>
2020-06-25 22:30:59 +02:00
Ulf Hermann 35adb74ddd Reimplement JSON support on top of Cbor
In turn, deprecate the QJsonDocument methods that deal with JSON binary
data. You should use CBOR for data serialization these days.

[ChangeLog][Deprecation Notice] The binary JSON representation is
deprecated. The CBOR format should be used instead.

Fixes: QTBUG-47629
Change-Id: Ic8b92ea36de87815b12307a9d8b1095f07166db8
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-10-21 19:12:51 +02:00
Mat Sutcliffe 0652bdcf5e QJsonObject: add QLatin1String overloads of non-const methods
Also optimized the existing QL1S overload of non-const operator[](), and
applied Extract Method refactoring to the other existing QL1S overloads.

[ChangeLog][QtCore][QJsonObject] Added insert(), remove(), and take()
overloads taking QLatin1String.

Change-Id: I5e737cf2d7d9ffb325d6981db1e4a6a9f093657b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Anton Kudryavtsev <antkudr@mail.ru>
2019-07-20 12:04:48 +01:00
Mat Sutcliffe 7f8e3aab2d JSON: add some QStringView overloads
[ChangeLog][QtCore][JSON] Added overloads of functions taking key
strings as QStringView; in QJsonObject, QJsonValue and QJsonDocument.

Change-Id: I78b40aba8200003acfae257ff06f5f15737005e7
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Anton Kudryavtsev <antkudr@mail.ru>
2019-07-20 12:04:31 +01:00
Giuseppe D'Angelo 34fe9232db Port from QAtomic::load() to loadRelaxed()
Semi-automated, just needed ~20 manual fixes:

$ find \( -iname \*.cpp -or -iname \*.h \) -exec perl -pe 's/(\.|->)load\(\)/$1loadRelaxed\(\)/g' -i \{\} +
$ find \( -iname \*.cpp -or -iname \*.h \) -exec perl -pe 's/(\.|->)store\(/$1storeRelaxed\(/g' -i \{\} +

It can be easily improved (e.g. for store check that there are no commas
after the opening parens). The most common offender is QLibrary::load,
and some code using std::atomic directly.

Change-Id: I07c38a3c8ed32c924ef4999e85c7e45cf48f0f6c
Reviewed-by: Marc Mutz <marc.mutz@kdab.com>
2019-06-20 20:48:59 +02:00
Allan Sandfeld Jensen a1e62e7ba1 Replace Q_DECL_NOEXCEPT with noexcept in corelib
In preparation of Qt6 move away from pre-C++11 macros.

Change-Id: I44126693c20c18eca5620caab4f7e746218e0ce3
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2019-04-03 13:49:45 +00:00
Kevin Funk 41e7b71c41 More nullptr usage in headers
Diff generated by running clang-tidy's modernize-use-nullptr checker on
the CMake-based Qt version.

Skipping src/3rdparty, examples/, tests/

Change-Id: Ib182074e2e2fd52f63093f73b3e2e4c0cb7af188
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Simon Hausmann <simon.hausmann@qt.io>
2019-03-14 07:37:52 +00:00
Friedemann Kleint e209321966 Use Q_DISABLE_COPY_MOVE for private classes
Change-Id: I3cfcfba892ff4a0ab4e31f308620b445162bb17b
Reviewed-by: Giuseppe D'Angelo <giuseppe.dangelo@kdab.com>
2018-12-12 07:23:54 +00:00
Thiago Macieira bd0905db95 QString: add a method to do a conversion to Latin1 without checking
If the input is already known to be Latin 1, we don't need to check and
merge in question marks. QJsonObject already needed this code, now we
can make it more efficient.

I'll need the same code in CBOR.

Change-Id: Ib48364abee9f464c96c6fffd152e508f078404e5
Reviewed-by: Allan Sandfeld Jensen <allan.jensen@qt.io>
2018-05-15 23:07:22 +00:00
Jüri Valdmann d3935cbd71 QJsonDocument::fromRawData: Fix out-of-bounds access
This method takes a pointer+size pair, but begins reading through the pointer
without first checking the size parameter. Fixed by checking the size parameter.

A new test case is added with an empty binary json file. Although the test does
not fail under normal conditions, the problem can be detected using valgrind or
AddressSanitizer.

Task-number: QTBUG-61969
Change-Id: Ie91cc9a56dbc3c676472c614d4e633d7721b8481
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
2018-05-04 11:53:03 +00:00
Thiago Macieira 08559d2b77 JSON: use the new isLatin1 function
It's vectorized, so it should be faster than this version.

Change-Id: I56b444f9d6274221a3b7fffd150c1519eb999cdc
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2018-01-27 17:51:32 +00:00
Thiago Macieira a6b697ca13 Create corelib/serialization and move existing file formats into it
This is in preparation to adding CBOR support. We don't need yet another
dir for CBOR and placing it in src/corelib/json is just wrong.

Change-Id: I9741f017961b410c910dfffd14ffb9d870340fa6
Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>
2018-01-26 20:59:50 +00:00