From 6662919ecde901771d9641fd732aa0735ebb39e6 Mon Sep 17 00:00:00 2001 From: Anton Kudryavtsev Date: Thu, 31 Mar 2016 12:01:59 +0300 Subject: CoreLib: use QStringRef to optimize memory allocation Replace substring functions that return QString with corresponding functions that return QStringRef where it's possible. Create QString from QStringRef only where necessary. Change-Id: Id9ea11b16947220cd27787c0b529de62d10b6c26 Reviewed-by: Edward Welbourne --- src/corelib/mimetypes/qmimeprovider.cpp | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) (limited to 'src/corelib/mimetypes/qmimeprovider.cpp') diff --git a/src/corelib/mimetypes/qmimeprovider.cpp b/src/corelib/mimetypes/qmimeprovider.cpp index dc6eb05d9a..e72f9a30d0 100644 --- a/src/corelib/mimetypes/qmimeprovider.cpp +++ b/src/corelib/mimetypes/qmimeprovider.cpp @@ -63,7 +63,7 @@ QT_BEGIN_NAMESPACE static QString fallbackParent(const QString &mimeTypeName) { - const QString myGroup = mimeTypeName.left(mimeTypeName.indexOf(QLatin1Char('/'))); + const QStringRef myGroup = mimeTypeName.leftRef(mimeTypeName.indexOf(QLatin1Char('/'))); // All text/* types are subclasses of text/plain. if (myGroup == QLatin1String("text") && mimeTypeName != QLatin1String("text/plain")) return QLatin1String("text/plain"); @@ -363,7 +363,8 @@ bool QMimeBinaryProvider::matchSuffixTree(QMimeGlobMatchResult &result, QMimeBin const int weight = flagsAndWeight & 0xff; const bool caseSensitive = flagsAndWeight & 0x100; if (caseSensitiveCheck || !caseSensitive) { - result.addMatch(QLatin1String(mimeType), weight, QLatin1Char('*') + fileName.mid(charPos+1)); + result.addMatch(QLatin1String(mimeType), weight, + QLatin1Char('*') + fileName.midRef(charPos + 1)); success = true; } } -- cgit v1.2.3