Port from qAsConst() to std::as_const()

We've been requiring C++17 since Qt 6.0, and our qAsConst use finally
starts to bother us (QTBUG-99313), so time to port away from it
now.

Since qAsConst has exactly the same semantics as std::as_const (down
to rvalue treatment, constexpr'ness and noexcept'ness), there's really
nothing more to it than a global search-and-replace, with manual
unstaging of the actual definition and documentation in dist/,
src/corelib/doc/ and src/corelib/global/.

Task-number: QTBUG-99313
Change-Id: I4c7114444a325ad4e62d0fcbfd347d2bbfb21541
Reviewed-by: Ivan Solovev <ivan.solovev@qt.io>

7 files changed, 17 insertions, 17 deletions

diff --git a/src/widgets/widgets/qdockarealayout.cpp b/src/widgets/widgets/qdockarealayout.cpp
index 91737b301a..2e3602e47a 100644
--- a/src/widgets/widgets/qdockarealayout.cpp
+++ b/src/widgets/widgets/qdockarealayout.cpp
@@ -3113,7 +3113,7 @@ void QDockAreaLayout::resizeDocks(const QList<QDockWidget *> &docks,
             if (!info->tabbed && info->o == o) {
                 info->item_list[path.constLast()].size = size;
                 int totalSize = 0;
-                for (const QDockAreaLayoutItem &item : qAsConst(info->item_list)) {
+                for (const QDockAreaLayoutItem &item : std::as_const(info->item_list)) {
                     if (!item.skip()) {
                         if (totalSize != 0)
                             totalSize += sep;
diff --git a/src/widgets/widgets/qmainwindowlayout.cpp b/src/widgets/widgets/qmainwindowlayout.cpp
index 5ba065f084..12d8876fcc 100644
--- a/src/widgets/widgets/qmainwindowlayout.cpp
+++ b/src/widgets/widgets/qmainwindowlayout.cpp
@@ -1588,9 +1588,9 @@ void QMainWindowLayout::setDocumentMode(bool enabled)
     _documentMode = enabled;
 
     // Update the document mode for all tab bars
-    for (QTabBar *bar : qAsConst(usedTabBars))
+    for (QTabBar *bar : std::as_const(usedTabBars))
         bar->setDocumentMode(_documentMode);
-    for (QTabBar *bar : qAsConst(unusedTabBars))
+    for (QTabBar *bar : std::as_const(unusedTabBars))
         bar->setDocumentMode(_documentMode);
 }
 
@@ -2992,7 +2992,7 @@ bool QMainWindowLayout::restoreState(QDataStream &stream)
 #if QT_CONFIG(dockwidget)
     if (parentWidget()->isVisible()) {
 #if QT_CONFIG(tabbar)
-        for (QTabBar *tab_bar : qAsConst(usedTabBars))
+        for (QTabBar *tab_bar : std::as_const(usedTabBars))
             tab_bar->show();
 
 #endif
diff --git a/src/widgets/widgets/qmdiarea.cpp b/src/widgets/widgets/qmdiarea.cpp
index b4d7785d94..8708e343fd 100644
--- a/src/widgets/widgets/qmdiarea.cpp
+++ b/src/widgets/widgets/qmdiarea.cpp
@@ -434,8 +434,8 @@ QList<QRect> MinOverlapPlacer::getCandidatePlacements(const QSize &size, const Q
     ylist.erase(std::unique(ylist.begin(), ylist.end()), ylist.end());
 
     result.reserve(ylist.size() * xlist.size());
-    for (int y : qAsConst(ylist))
-        for (int x : qAsConst(xlist))
+    for (int y : std::as_const(ylist))
+        for (int x : std::as_const(xlist))
             result << QRect(QPoint(x, y), size);
     return result;
 }
diff --git a/src/widgets/widgets/qmenu.cpp b/src/widgets/widgets/qmenu.cpp
index f6689a2537..e789c1bef2 100644
--- a/src/widgets/widgets/qmenu.cpp
+++ b/src/widgets/widgets/qmenu.cpp
@@ -2383,7 +2383,7 @@ void QMenuPrivate::popup(const QPoint &p, QAction *atAction, PositionFunction po
             atAction = defaultAction;
             // TODO: This works for first level menus, not yet sub menus
         } else {
-            for (QAction *action : qAsConst(actions))
+            for (QAction *action : std::as_const(actions))
                 if (action->isEnabled()) {
                     atAction = action;
                     break;
diff --git a/src/widgets/widgets/qstatusbar.cpp b/src/widgets/widgets/qstatusbar.cpp
index d5ae7d5cd2..9a9879a48d 100644
--- a/src/widgets/widgets/qstatusbar.cpp
+++ b/src/widgets/widgets/qstatusbar.cpp
@@ -570,7 +570,7 @@ void QStatusBar::hideOrShow()
     Q_D(QStatusBar);
     bool haveMessage = !d->tempItem.isEmpty();
 
-    for (const auto &item : qAsConst(d->items)) {
+    for (const auto &item : std::as_const(d->items)) {
         if (item.isPermanent())
             break;
         if (haveMessage && item.widget->isVisible()) {
@@ -622,7 +622,7 @@ void QStatusBar::paintEvent(QPaintEvent *event)
     opt.initFrom(this);
     style()->drawPrimitive(QStyle::PE_PanelStatusBar, &opt, &p, this);
 
-    for (const auto &item : qAsConst(d->items)) {
+    for (const auto &item : std::as_const(d->items)) {
         if (item.widget->isVisible() && (!haveMessage || item.isPermanent())) {
             QRect ir = item.widget->geometry().adjusted(-2, -1, 2, 1);
             if (event->rect().intersects(ir)) {
@@ -661,7 +661,7 @@ bool QStatusBar::event(QEvent *e)
         // Calculate new strut height and call reformat() if it has changed
         int maxH = fontMetrics().height();
 
-        for (const auto &item : qAsConst(d->items)) {
+        for (const auto &item : std::as_const(d->items)) {
             const int itemH = qMin(qSmartMinSize(item.widget).height(), item.widget->maximumHeight());
             maxH = qMax(maxH, itemH);
         }
diff --git a/src/widgets/widgets/qtabbar.cpp b/src/widgets/widgets/qtabbar.cpp
index ad6d28c523..155dd80337 100644
--- a/src/widgets/widgets/qtabbar.cpp
+++ b/src/widgets/widgets/qtabbar.cpp
@@ -979,7 +979,7 @@ int QTabBar::insertTab(int index, const QIcon& icon, const QString &text)
         setTabButton(index, closeSide, closeButton);
     }
 
-    for (const auto tab : qAsConst(d->tabList)) {
+    for (const auto tab : std::as_const(d->tabList)) {
         if (tab->lastTab >= index)
             ++tab->lastTab;
     }
@@ -1025,7 +1025,7 @@ void QTabBar::removeTab(int index)
         int newIndex = removedTab->lastTab;
         d->tabList.removeAt(index);
         delete removedTab;
-        for (auto tab : qAsConst(d->tabList)) {
+        for (auto tab : std::as_const(d->tabList)) {
             if (tab->lastTab == index)
                 tab->lastTab = -1;
             if (tab->lastTab > index)
@@ -2039,7 +2039,7 @@ void QTabBar::moveTab(int from, int to)
     d->tabList.move(from, to);
 
     // update lastTab locations
-    for (const auto tab : qAsConst(d->tabList))
+    for (const auto tab : std::as_const(d->tabList))
         tab->lastTab = d->calculateNewPosition(from, to, tab->lastTab);
 
     // update external variables
@@ -2257,7 +2257,7 @@ void QTabBarPrivate::moveTabFinished(int index)
     bool cleanup = (pressedIndex == index) || (pressedIndex == -1) || !validIndex(index);
     bool allAnimationsFinished = true;
 #if QT_CONFIG(animation)
-    for (const auto tab : qAsConst(tabList)) {
+    for (const auto tab : std::as_const(tabList)) {
         if (tab->animation && tab->animation->state() == QAbstractAnimation::Running) {
             allAnimationsFinished = false;
             break;
@@ -2267,7 +2267,7 @@ void QTabBarPrivate::moveTabFinished(int index)
     if (allAnimationsFinished && cleanup) {
         if (movingTab)
             movingTab->setVisible(false); // We might not get a mouse release
-        for (auto tab : qAsConst(tabList)) {
+        for (auto tab : std::as_const(tabList)) {
             tab->dragOffset = 0;
         }
         if (pressedIndex != -1 && movable) {
@@ -2545,7 +2545,7 @@ void QTabBar::setTabsClosable(bool closable)
     d->closeButtonOnTabs = closable;
     ButtonPosition closeSide = (ButtonPosition)style()->styleHint(QStyle::SH_TabBar_CloseButtonPosition, nullptr, this);
     if (!closable) {
-        for (auto tab : qAsConst(d->tabList)) {
+        for (auto tab : std::as_const(d->tabList)) {
             if (closeSide == LeftSide && tab->leftWidget) {
                 tab->leftWidget->deleteLater();
                 tab->leftWidget = nullptr;
diff --git a/src/widgets/widgets/qtextbrowser.cpp b/src/widgets/widgets/qtextbrowser.cpp
index 63edfc5328..1cac46e8a8 100644
--- a/src/widgets/widgets/qtextbrowser.cpp
+++ b/src/widgets/widgets/qtextbrowser.cpp
@@ -154,7 +154,7 @@ QString QTextBrowserPrivate::findFile(const QUrl &name) const
     if (QFileInfo(fileName).isAbsolute())
         return fileName;
 
-    for (QString path : qAsConst(searchPaths)) {
+    for (QString path : std::as_const(searchPaths)) {
         if (!path.endsWith(u'/'))
             path.append(u'/');
         path.append(fileName);