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QStringView: Add compare() member function

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There was no public API for doing case-insensitive comparisons
of QStringView.

Task-number: QTBUG-69389
Change-Id: I1b021eefec35e135b97fb87704c8dc137232d83d
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
This commit is contained in:
Friedemann Kleint 2018-07-11 12:59:30 +02:00
parent 5624e3c97d
commit 019dd88d2c
3 changed files with 37 additions and 0 deletions
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14
src/corelib/tools/qstringview.cpp
View File

@ -680,6 +680,20 @@ QT_BEGIN_NAMESPACE
'\\f', '\\r', and ' '.
*/
/*!
\fn int QStringView::compare(QStringView other, Qt::CaseSensitivity cs) const
\since 5.12
Compares this string-view with the \a other string-view and returns an
integer less than, equal to, or greater than zero if this string-view
is less than, equal to, or greater than the other string-view.
If \a cs is Qt::CaseSensitive, the comparison is case sensitive;
otherwise the comparison is case insensitive.
\sa operator==(), operator<(), operator>()
*/
/*!
\fn bool QStringView::startsWith(QStringView str, Qt::CaseSensitivity cs) const
\fn bool QStringView::startsWith(QLatin1String l1, Qt::CaseSensitivity cs) const

3
src/corelib/tools/qstringview.h
View File

@ -250,6 +250,9 @@ public:
Q_REQUIRED_RESULT QStringView trimmed() const Q_DECL_NOTHROW { return QtPrivate::trimmed(*this); }
Q_REQUIRED_RESULT int compare(QStringView other, Qt::CaseSensitivity cs = Qt::CaseSensitive) const Q_DECL_NOTHROW
{ return QtPrivate::compareStrings(*this, other, cs); }
Q_REQUIRED_RESULT bool startsWith(QStringView s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const Q_DECL_NOTHROW
{ return QtPrivate::startsWith(*this, s, cs); }
Q_REQUIRED_RESULT inline bool startsWith(QLatin1String s, Qt::CaseSensitivity cs = Qt::CaseSensitive) const Q_DECL_NOTHROW;

20
tests/auto/corelib/tools/qstringview/tst_qstringview.cpp
View File

@ -217,6 +217,8 @@ private Q_SLOTS:
#endif
}
void comparison();
private:
template <typename String>
void conversion_tests(String arg) const;
@ -615,5 +617,23 @@ void tst_QStringView::conversion_tests(String string) const
}
}
void tst_QStringView::comparison()
{
const QStringView aa = QStringViewLiteral("aa");
const QStringView upperAa = QStringViewLiteral("AA");
const QStringView bb = QStringViewLiteral("bb");
QVERIFY(aa == aa);
QVERIFY(aa != bb);
QVERIFY(aa < bb);
QVERIFY(bb > aa);
QCOMPARE(aa.compare(aa), 0);
QVERIFY(aa.compare(upperAa) != 0);
QCOMPARE(aa.compare(upperAa, Qt::CaseInsensitive), 0);
QVERIFY(aa.compare(bb) < 0);
QVERIFY(bb.compare(aa) > 0);
}
QTEST_APPLESS_MAIN(tst_QStringView)
#include "tst_qstringview.moc"