Commit Graph

4 Commits (a7adf3ea1dd5998685bbfa709bb3d6700a3ff9c3)

Author SHA1 Message Date
Marc Mutz e0ea0f6178 QChar: optimize comparison with QString{,Ref}
Instead of relying on the QString relational operators to
implicitly convert the QChar to a QString, add relational
operator overloads that compare the QChar without first
turning it into a QString, saving one memory allocation
per comparison, and allowing to mark the operation as
nothrow.

Consequently, in tst_QStringBinOps, verify now that all
relational operations are noexcept.

The added overloads make QChar ==/!= int comparisons
ambiguous. De-ambiguate by providing a constrained
template that matches int and nothing but int (otherwise,
the QChar and the int versions would compete for a
QChar::SpecialCharacter argument, and end up creating
new ambiguities). This solution may not be perfect, but
it can be easily extended should more ambiguities crop up.
The existing overload deals with all patterns found in
qtbase.

Change-Id: I4156d918e9b9134c1da684b8b69e0ee526ad24e3
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
2016-04-05 19:47:37 +00:00
Marc Mutz 0683c9291f QChar: add missing relational operators against QLatin1String/QStringRef
For QChar <> QStringRef, equality and inequality were already provided
(via QChar -> QString implicit conversions, to be fixed in a separate
patch). Missing were the less/greater than (or equal) operators.

Added.

For QChar <> QLatin1String, all relational operators were missing.

Added, too.

[ChangeLog][QtCore][QChar] Added missing operator{<,>,<=,>=}
comparing against QLatin1String and QStringRef.

[ChangeLog][QtCore][QChar] Added missing operator{==,!=}
comparing against QLatin1String.

Change-Id: I9941fe7e7281ea560b3bd5970cb9651ffadc1495
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
2016-04-05 15:23:30 +00:00
Marc Mutz 8005fa3524 QStringRef: add missing relational operators against QLatin1String/QString
Equality and inequality were already provided. Missing were the
less/greater than (or equal) operators.

Added.

Moved existing functions around and more similar to the new ones,
to make the whole code section a bit more manageable.

[ChangeLog][QtCore][QStringRef] Added missing operator{<,>,<=,>=}
comparing against QLatin1String and QString.

Change-Id: Idb3c4fa9b38421637987226f3cc1b77f5d4a6309
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
2016-03-16 08:06:54 +00:00
Marc Mutz 032efc2cb2 Add test for API symmetry of QString/Ref, QLatin1String, QChar
At the moment, only checks the relational operators, where
it already found some which do not compile. In order to
simplify the test, the missing operators are supplied by
the test harness until they are fixed in the library.

Change-Id: Ief5daefa68f15de5f8e559c9378ed83b715b69ee
Reviewed-by: Lars Knoll <lars.knoll@theqtcompany.com>
2016-03-15 08:11:35 +00:00