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>

2 files changed, 5 insertions, 5 deletions

diff --git a/src/gui/platform/unix/dbustray/qdbustraytypes.cpp b/src/gui/platform/unix/dbustray/qdbustraytypes.cpp
index b2d87d7b8c..accbd87e7e 100644
--- a/src/gui/platform/unix/dbustray/qdbustraytypes.cpp
+++ b/src/gui/platform/unix/dbustray/qdbustraytypes.cpp
@@ -45,7 +45,7 @@ QXdgDBusImageVector iconToQXdgDBusImageVector(const QIcon &icon)
     bool hasSmallIcon = false;
     bool hasMediumIcon = false;
     QList<QSize> toRemove;
-    for (const QSize &size : qAsConst(sizes)) {
+    for (const QSize &size : std::as_const(sizes)) {
         int maxSize = qMax(size.width(), size.height());
         if (maxSize <= IconNormalSmallSize)
             hasSmallIcon = true;
@@ -54,7 +54,7 @@ QXdgDBusImageVector iconToQXdgDBusImageVector(const QIcon &icon)
         else if (maxSize > IconSizeLimit)
             toRemove << size;
     }
-    for (const QSize &size : qAsConst(toRemove))
+    for (const QSize &size : std::as_const(toRemove))
         sizes.removeOne(size);
     if (!hasSmallIcon)
         sizes.append(QSize(IconNormalSmallSize, IconNormalSmallSize));
@@ -62,7 +62,7 @@ QXdgDBusImageVector iconToQXdgDBusImageVector(const QIcon &icon)
         sizes.append(QSize(IconNormalMediumSize, IconNormalMediumSize));
 
     ret.reserve(sizes.size());
-    for (const QSize &size : qAsConst(sizes)) {
+    for (const QSize &size : std::as_const(sizes)) {
         // Protocol specifies ARGB32 format in network byte order
         QImage im = engine->pixmap(size, QIcon::Normal, QIcon::Off).toImage().convertToFormat(QImage::Format_ARGB32);
         // letterbox if necessary to make it square
diff --git a/src/gui/platform/unix/qxkbcommon.cpp b/src/gui/platform/unix/qxkbcommon.cpp
index b3ee0f4948..fd368f8282 100644
--- a/src/gui/platform/unix/qxkbcommon.cpp
+++ b/src/gui/platform/unix/qxkbcommon.cpp
@@ -461,7 +461,7 @@ QList<xkb_keysym_t> QXkbCommon::toKeysym(QKeyEvent *event)
     // From libxkbcommon keysym-utf.c:
     // "We allow to represent any UCS character in the range U-00000000 to
     // U-00FFFFFF by a keysym value in the range 0x01000000 to 0x01ffffff."
-    for (uint utf32 : qAsConst(ucs4))
+    for (uint utf32 : std::as_const(ucs4))
         keysyms.append(utf32 | 0x01000000);
 
     return keysyms;
@@ -682,7 +682,7 @@ QList<int> QXkbCommon::possibleKeys(xkb_state *state, const QKeyEvent *event,
             // catch only more specific shortcuts, i.e. Ctrl+Shift+= also generates Ctrl++ and +,
             // but Ctrl++ is more specific than +, so we should skip the last one
             bool ambiguous = false;
-            for (int shortcut : qAsConst(result)) {
+            for (int shortcut : std::as_const(result)) {
                 if (int(shortcut & ~Qt::KeyboardModifierMask) == qtKey && (shortcut & mods) == mods) {
                     ambiguous = true;
                     break;