uic: Change some QLatin1String literals to QString literals

While working on QTBUG-98434 some potential improvements were
found in the pre-existing code.

Some of the QLatin1String literals are used to initialize
QStrings or are converted to QStrings and so it makes sense to
replace them with QString literals.

As a related change, change the type of namespaceDelimitier from
QString to QL1SV, since it is used only for a function call and
that function has an overload to take QL1SV.

Task-number: QTBUG-103100
Change-Id: I56db6ddd84ad2a7133a765bb49ecd8f962ac5c13
Reviewed-by: Marc Mutz <marc.mutz@qt.io>

src/tools/uic/cpp/cppwritedeclaration.cpp

@@ -120,7 +120,7 @@ void WriteDeclaration::acceptUI(DomUI *node)
 
 void WriteDeclaration::acceptWidget(DomWidget *node)
 {
-    QString className = "QWidget"_L1;
+    QString className = u"QWidget"_s;
     if (node->hasAttributeClass())
         className = node->attributeClass();
 
@@ -137,7 +137,7 @@ void WriteDeclaration::acceptSpacer(DomSpacer *node)
 
 void WriteDeclaration::acceptLayout(DomLayout *node)
 {
-    QString className = "QLayout"_L1;
+    QString className = u"QLayout"_s;
     if (node->hasAttributeClass())
         className = node->attributeClass();
 

src/tools/uic/cpp/cppwriteincludes.cpp

@@ -37,7 +37,7 @@ WriteIncludes::WriteIncludes(Uic *uic) : WriteIncludesBase(uic),
     // When possible (no namespace) use the "QtModule/QClass" convention
     // and create a re-mapping of the old header "qclass.h" to it. Do not do this
     // for the "Phonon::Someclass" classes, however.
-    const QString namespaceDelimiter = "::"_L1;
+    const QLatin1StringView namespaceDelimiter = "::"_L1;
     for (const auto &e : classInfoEntries()) {
         const QString klass = QLatin1StringView(e.klass);
         const QString module = QLatin1StringView(e.module);

src/tools/uic/cpp/cppwriteinitialization.cpp

@@ -669,7 +669,7 @@ void WriteInitialization::acceptWidget(DomWidget *node)
 
     const DomPropertyMap attributes = propertyMap(node->elementAttribute());
 
-    const QString pageDefaultString = "Page"_L1;
+    const QString pageDefaultString = u"Page"_s;
 
     if (cwi->extends(parentClass, "QMainWindow")) {
         if (cwi->extends(className, "QMenuBar")) {
@@ -781,10 +781,10 @@ void WriteInitialization::acceptWidget(DomWidget *node)
     };
 
     static const QStringList trees = {
-        "QTreeView"_L1, "QTreeWidget"_L1
+        u"QTreeView"_s, u"QTreeWidget"_s
     };
     static const QStringList tables = {
-        "QTableView"_L1, "QTableWidget"_L1
+        u"QTableView"_s, u"QTableWidget"_s
     };
 
     if (cwi->extendsOneOf(className, trees)) {
@@ -1237,8 +1237,8 @@ void WriteInitialization::writeProperties(const QString &varName,
             continue;
         }
         static const QStringList currentIndexWidgets = {
-            "QComboBox"_L1, "QStackedWidget"_L1,
-            "QTabWidget"_L1, "QToolBox"_L1
+            u"QComboBox"_s, u"QStackedWidget"_s,
+            u"QTabWidget"_s, u"QToolBox"_s
         };
         if (propertyName == "currentIndex"_L1 // set currentIndex later
             && (m_uic->customWidgetsInfo()->extendsOneOf(className, currentIndexWidgets))) {
@@ -1929,7 +1929,7 @@ QString WriteInitialization::writeBrushInitialization(const DomBrush *brush)
 
 void WriteInitialization::writeBrush(const DomBrush *brush, const QString &brushName)
 {
-    QString style = "SolidPattern"_L1;
+    QString style = u"SolidPattern"_s;
     if (brush->hasAttributeBrushStyle())
         style = brush->attributeBrushStyle();
 

src/tools/uic/customwidgetsinfo.cpp

@@ -96,7 +96,7 @@ bool CustomWidgetsInfo::isAmbiguousSignal(const QString &className,
 QString CustomWidgetsInfo::realClassName(const QString &className) const
 {
     if (className == "Line"_L1)
-        return "QFrame"_L1;
+        return u"QFrame"_s;
 
     return className;
 }

src/tools/uic/driver.cpp

@@ -196,7 +196,7 @@ QString Driver::headerFileName() const
 QString Driver::headerFileName(const QString &fileName)
 {
     if (fileName.isEmpty())
-        return headerFileName("noname"_L1);
+        return headerFileName(u"noname"_s);
 
     QFileInfo info(fileName);
     QString baseName = info.baseName();

src/tools/uic/shared/language.cpp

@@ -58,9 +58,9 @@ QString self;
 QString eol;
 QString emptyString;
 
-QString cppQualifier = "::"_L1;
-QString cppTrue = "true"_L1;
-QString cppFalse = "false"_L1;
+QString cppQualifier = u"::"_s;
+QString cppTrue = u"true"_s;
+QString cppFalse = u"false"_s;
 
 QTextStream &operator<<(QTextStream &str, const qtConfig &c)
 {

src/tools/uic/uic.cpp

@@ -291,9 +291,9 @@ void Uic::writeHeaderProtectionEnd()
 bool Uic::isButton(const QString &className) const
 {
     static const QStringList buttons = {
-        "QRadioButton"_L1, "QToolButton"_L1,
-        "QCheckBox"_L1, "QPushButton"_L1,
-        "QCommandLinkButton"_L1
+        u"QRadioButton"_s, u"QToolButton"_s,
+        u"QCheckBox"_s, u"QPushButton"_s,
+        u"QCommandLinkButton"_s
     };
     return customWidgetsInfo()->extendsOneOf(className, buttons);
 }
@@ -301,10 +301,10 @@ bool Uic::isButton(const QString &className) const
 bool Uic::isContainer(const QString &className) const
 {
     static const QStringList containers = {
-        "QStackedWidget"_L1, "QToolBox"_L1,
-        "QTabWidget"_L1, "QScrollArea"_L1,
-        "QMdiArea"_L1, "QWizard"_L1,
-        "QDockWidget"_L1
+        u"QStackedWidget"_s, u"QToolBox"_s,
+        u"QTabWidget"_s, u"QScrollArea"_s,
+        u"QMdiArea"_s, u"QWizard"_s,
+        u"QDockWidget"_s
     };
 
     return customWidgetsInfo()->extendsOneOf(className, containers);
@@ -313,7 +313,7 @@ bool Uic::isContainer(const QString &className) const
 bool Uic::isMenu(const QString &className) const
 {
     static const QStringList menus = {
-        "QMenu"_L1, "QPopupMenu"_L1
+        u"QMenu"_s, u"QPopupMenu"_s
     };
     return customWidgetsInfo()->extendsOneOf(className, menus);
 }