More deprecation induced busywork

QString::count() will vanish.

Change-Id: I65672fa648c0969930e9398ec4e541a0771c8a57
Reviewed-by: Eike Ziller <eike.ziller@qt.io>

29 files changed, 161 insertions, 161 deletions

diff --git a/src/libs/utils/differ.cpp b/src/libs/utils/differ.cpp
index 9dc2ce8454..f929efbeeb 100644
--- a/src/libs/utils/differ.cpp
+++ b/src/libs/utils/differ.cpp
@@ -24,8 +24,8 @@ namespace Utils {
 static int commonPrefix(const QString &text1, const QString &text2)
 {
     int i = 0;
-    const int text1Count = text1.count();
-    const int text2Count = text2.count();
+    const int text1Count = text1.size();
+    const int text2Count = text2.size();
     const int maxCount = qMin(text1Count, text2Count);
     while (i < maxCount) {
         if (text1.at(i) != text2.at(i))
@@ -38,8 +38,8 @@ static int commonPrefix(const QString &text1, const QString &text2)
 static int commonSuffix(const QString &text1, const QString &text2)
 {
     int i = 0;
-    const int text1Count = text1.count();
-    const int text2Count = text2.count();
+    const int text1Count = text1.size();
+    const int text2Count = text2.size();
     const int maxCount = qMin(text1Count, text2Count);
     while (i < maxCount) {
         if (text1.at(text1Count - i - 1) != text2.at(text2Count - i - 1))
@@ -52,8 +52,8 @@ static int commonSuffix(const QString &text1, const QString &text2)
 static int commonOverlap(const QString &text1, const QString &text2)
 {
     int i = 0;
-    const int text1Count = text1.count();
-    const int text2Count = text2.count();
+    const int text1Count = text1.size();
+    const int text2Count = text2.size();
     const int maxCount = qMin(text1Count, text2Count);
     while (i < maxCount) {
         if (QStringView(text1).mid(text1Count - maxCount + i) == QStringView(text2).left(maxCount - i))
@@ -66,7 +66,7 @@ static int commonOverlap(const QString &text1, const QString &text2)
 static QList<Diff> decode(const QList<Diff> &diffList, const QStringList &lines)
 {
     QList<Diff> newDiffList;
-    newDiffList.reserve(diffList.count());
+    newDiffList.reserve(diffList.size());
     for (const Diff &diff : diffList) {
         QString text;
         for (QChar c : diff.text) {
@@ -80,7 +80,7 @@ static QList<Diff> decode(const QList<Diff> &diffList, const QStringList &lines)
 
 static QList<Diff> squashEqualities(const QList<Diff> &diffList)
 {
-    if (diffList.count() < 3) // we need at least 3 items
+    if (diffList.size() < 3) // we need at least 3 items
         return diffList;
 
     QList<Diff> newDiffList;
@@ -88,20 +88,20 @@ static QList<Diff> squashEqualities(const QList<Diff> &diffList)
     Diff thisDiff = diffList.at(1);
     Diff nextDiff = diffList.at(2);
     int i = 2;
-    while (i < diffList.count()) {
+    while (i < diffList.size()) {
         if (prevDiff.command == Diff::Equal
                 && nextDiff.command == Diff::Equal) {
             if (thisDiff.text.endsWith(prevDiff.text)) {
                 thisDiff.text = prevDiff.text
-                        + thisDiff.text.left(thisDiff.text.count()
-                        - prevDiff.text.count());
+                        + thisDiff.text.left(thisDiff.text.size()
+                        - prevDiff.text.size());
                 nextDiff.text = prevDiff.text + nextDiff.text;
             } else if (thisDiff.text.startsWith(nextDiff.text)) {
                 prevDiff.text += nextDiff.text;
-                thisDiff.text = thisDiff.text.mid(nextDiff.text.count())
+                thisDiff.text = thisDiff.text.mid(nextDiff.text.size())
                         + nextDiff.text;
                 i++;
-                if (i < diffList.count())
+                if (i < diffList.size())
                     nextDiff = diffList.at(i);
                 newDiffList.append(prevDiff);
             } else {
@@ -113,11 +113,11 @@ static QList<Diff> squashEqualities(const QList<Diff> &diffList)
         prevDiff = thisDiff;
         thisDiff = nextDiff;
         i++;
-        if (i < diffList.count())
+        if (i < diffList.size())
             nextDiff = diffList.at(i);
     }
     newDiffList.append(prevDiff);
-    if (i == diffList.count())
+    if (i == diffList.size())
         newDiffList.append(thisDiff);
     return newDiffList;
 }
@@ -132,9 +132,9 @@ static QList<Diff> cleanupOverlaps(const QList<Diff> &diffList)
     // DEL(XXXXABC), INS(DEFXXXX) -> INS(DEF), EQ(XXXX), DEL(ABC)
     QList<Diff> newDiffList;
     int i = 0;
-    while (i < diffList.count()) {
+    while (i < diffList.size()) {
         Diff thisDiff = diffList.at(i);
-        Diff nextDiff = i < diffList.count() - 1
+        Diff nextDiff = i < diffList.size() - 1
                 ? diffList.at(i + 1)
                 : Diff(Diff::Equal);
         if (thisDiff.command == Diff::Delete
@@ -142,9 +142,9 @@ static QList<Diff> cleanupOverlaps(const QList<Diff> &diffList)
             const int delInsOverlap = commonOverlap(thisDiff.text, nextDiff.text);
             const int insDelOverlap = commonOverlap(nextDiff.text, thisDiff.text);
             if (delInsOverlap >= insDelOverlap) {
-                if (delInsOverlap > thisDiff.text.count() / 2
-                        || delInsOverlap > nextDiff.text.count() / 2) {
-                    thisDiff.text = thisDiff.text.left(thisDiff.text.count() - delInsOverlap);
+                if (delInsOverlap > thisDiff.text.size() / 2
+                        || delInsOverlap > nextDiff.text.size() / 2) {
+                    thisDiff.text = thisDiff.text.left(thisDiff.text.size() - delInsOverlap);
                     const Diff equality(Diff::Equal, nextDiff.text.left(delInsOverlap));
                     nextDiff.text = nextDiff.text.mid(delInsOverlap);
                     newDiffList.append(thisDiff);
@@ -155,9 +155,9 @@ static QList<Diff> cleanupOverlaps(const QList<Diff> &diffList)
                     newDiffList.append(nextDiff);
                 }
             } else {
-                if (insDelOverlap > thisDiff.text.count() / 2
-                        || insDelOverlap > nextDiff.text.count() / 2) {
-                    nextDiff.text = nextDiff.text.left(nextDiff.text.count() - insDelOverlap);
+                if (insDelOverlap > thisDiff.text.size() / 2
+                        || insDelOverlap > nextDiff.text.size() / 2) {
+                    nextDiff.text = nextDiff.text.left(nextDiff.text.size() - insDelOverlap);
                     const Diff equality(Diff::Equal, thisDiff.text.left(insDelOverlap));
                     thisDiff.text = thisDiff.text.mid(insDelOverlap);
                     newDiffList.append(nextDiff);
@@ -186,7 +186,7 @@ static int cleanupSemanticsScore(const QString &text1, const QString &text2)
     if (text1.isEmpty() || text2.isEmpty()) // Edges
         return 6;
 
-    const QChar char1 = text1[text1.count() - 1];
+    const QChar char1 = text1[text1.size() - 1];
     const QChar char2 = text2[0];
     const bool nonAlphaNumeric1 = !char1.isLetterOrNumber();
     const bool nonAlphaNumeric2 = !char2.isLetterOrNumber();
@@ -256,19 +256,19 @@ QList<Diff> Differ::moveWhitespaceIntoEqualities(const QList<Diff> &input)
 {
     QList<Diff> output = input;
 
-    for (int i = 0; i < output.count(); i++) {
+    for (int i = 0; i < output.size(); i++) {
         Diff diff = output[i];
 
         if (diff.command != Diff::Equal) {
             if (i > 0) { // check previous equality
                 Diff &previousDiff = output[i - 1];
-                const int previousDiffCount = previousDiff.text.count();
+                const int previousDiffCount = previousDiff.text.size();
                 if (previousDiff.command == Diff::Equal
                         && previousDiffCount
                         && isWhitespace(previousDiff.text.at(previousDiffCount - 1))) {
                     // previous diff ends with whitespace
                     int j = 0;
-                    while (j < diff.text.count()) {
+                    while (j < diff.text.size()) {
                         if (!isWhitespace(diff.text.at(j)))
                             break;
                         ++j;
@@ -280,10 +280,10 @@ QList<Diff> Differ::moveWhitespaceIntoEqualities(const QList<Diff> &input)
                     }
                 }
             }
-            if (i < output.count() - 1) { // check next equality
-                const int diffCount = diff.text.count();
+            if (i < output.size() - 1) { // check next equality
+                const int diffCount = diff.text.size();
                 Diff &nextDiff = output[i + 1];
-                const int nextDiffCount = nextDiff.text.count();
+                const int nextDiffCount = nextDiff.text.size();
                 if (nextDiff.command == Diff::Equal
                         && nextDiffCount
                         && (isWhitespace(nextDiff.text.at(0)) || isNewLine(nextDiff.text.at(0)))) {
@@ -331,7 +331,7 @@ static QString encodeReducedWhitespace(const QString &input,
 
     int inputIndex = 0;
     int outputIndex = 0;
-    while (inputIndex < input.count()) {
+    while (inputIndex < input.size()) {
         QChar c = input.at(inputIndex);
 
         if (isWhitespace(c)) {
@@ -339,7 +339,7 @@ static QString encodeReducedWhitespace(const QString &input,
             codeMap->insert(outputIndex, QString(c));
             ++inputIndex;
 
-            while (inputIndex < input.count()) {
+            while (inputIndex < input.size()) {
                 QChar reducedChar = input.at(inputIndex);
 
                 if (!isWhitespace(reducedChar))
@@ -372,10 +372,10 @@ static QList<Diff> decodeReducedWhitespace(const QList<Diff> &input,
     auto it = codeMap.constBegin();
     const auto itEnd = codeMap.constEnd();
     for (Diff diff : input) {
-        const int diffCount = diff.text.count();
+        const int diffCount = diff.text.size();
         while ((it != itEnd) && (it.key() < counter + diffCount)) {
             const int reversePosition = diffCount + counter - it.key();
-            const int updatedDiffCount = diff.text.count();
+            const int updatedDiffCount = diff.text.size();
             diff.text.replace(updatedDiffCount - reversePosition, 1, it.value());
             ++it;
         }
@@ -502,8 +502,8 @@ static QString encodeExpandedWhitespace(const QString &leftEquality,
     rightCodeMap->clear();
     QString output;
 
-    const int leftCount = leftEquality.count();
-    const int rightCount = rightEquality.count();
+    const int leftCount = leftEquality.size();
+    const int rightCount = rightEquality.size();
     int leftIndex = 0;
     int rightIndex = 0;
     while (leftIndex < leftCount && rightIndex < rightCount) {
@@ -534,8 +534,8 @@ static QString encodeExpandedWhitespace(const QString &leftEquality,
         }
 
         if (!leftWhitespaces.isEmpty() && !rightWhitespaces.isEmpty()) {
-            const int replacementPosition = output.count();
-            const int replacementSize = qMax(leftWhitespaces.count(), rightWhitespaces.count());
+            const int replacementPosition = output.size();
+            const int replacementSize = qMax(leftWhitespaces.size(), rightWhitespaces.size());
             const QString replacement(replacementSize, ' ');
             leftCodeMap->insert(replacementPosition, {replacementSize, leftWhitespaces});
             rightCodeMap->insert(replacementPosition, {replacementSize, rightWhitespaces});
@@ -574,14 +574,14 @@ static QList<Diff> decodeExpandedWhitespace(const QList<Diff> &input,
     auto it = codeMap.constBegin();
     const auto itEnd = codeMap.constEnd();
     for (Diff diff : input) {
-        const int diffCount = diff.text.count();
+        const int diffCount = diff.text.size();
         while ((it != itEnd) && (it.key() < counter + diffCount)) {
             const int replacementSize = it.value().first;
             const int reversePosition = diffCount + counter - it.key();
             if (reversePosition < replacementSize)
                 return QList<Diff>(); // replacement exceeds one Diff
             const QString replacement = it.value().second;
-            const int updatedDiffCount = diff.text.count();
+            const int updatedDiffCount = diff.text.size();
             diff.text.replace(updatedDiffCount - reversePosition,
                               replacementSize, replacement);
             ++it;
@@ -619,8 +619,8 @@ static bool diffWithWhitespaceExpandedInEqualities(const QList<Diff> &leftInput,
     leftOutput->clear();
     rightOutput->clear();
 
-    const int leftCount = leftInput.count();
-    const int rightCount = rightInput.count();
+    const int leftCount = leftInput.size();
+    const int rightCount = rightInput.size();
     int l = 0;
     int r = 0;
 
@@ -649,10 +649,10 @@ static bool diffWithWhitespaceExpandedInEqualities(const QList<Diff> &leftInput,
 
             // join code map positions with common maps
             for (auto it = leftCodeMap.cbegin(), end = leftCodeMap.cend(); it != end; ++it)
-                commonLeftCodeMap.insert(leftText.count() + it.key(), it.value());
+                commonLeftCodeMap.insert(leftText.size() + it.key(), it.value());
 
             for (auto it = rightCodeMap.cbegin(), end = rightCodeMap.cend(); it != end; ++it)
-                commonRightCodeMap.insert(rightText.count() + it.key(), it.value());
+                commonRightCodeMap.insert(rightText.size() + it.key(), it.value());
 
             leftText.append(commonEquality);
             rightText.append(commonEquality);
@@ -739,8 +739,8 @@ void Differ::ignoreWhitespaceBetweenEqualities(const QList<Diff> &leftInput,
     leftOutput->clear();
     rightOutput->clear();
 
-    const int leftCount = leftInput.count();
-    const int rightCount = rightInput.count();
+    const int leftCount = leftInput.size();
+    const int rightCount = rightInput.size();
     int l = 0;
     int r = 0;
 
@@ -836,8 +836,8 @@ void Differ::diffBetweenEqualities(const QList<Diff> &leftInput,
     leftOutput->clear();
     rightOutput->clear();
 
-    const int leftCount = leftInput.count();
-    const int rightCount = rightInput.count();
+    const int leftCount = leftInput.size();
+    const int rightCount = rightInput.size();
     int l = 0;
     int r = 0;
 
@@ -1000,8 +1000,8 @@ QList<Diff> Differ::preprocess1AndDiff(const QString &text1, const QString &text
     const int suffixCount = commonSuffix(newText1, newText2);
     if (suffixCount) {
         suffix = newText1.right(suffixCount);
-        newText1 = newText1.left(newText1.count() - suffixCount);
-        newText2 = newText2.left(newText2.count() - suffixCount);
+        newText1 = newText1.left(newText1.size() - suffixCount);
+        newText2 = newText2.left(newText2.size() - suffixCount);
     }
     QList<Diff> diffList = preprocess2AndDiff(newText1, newText2);
     if (prefixCount)
@@ -1025,28 +1025,27 @@ QList<Diff> Differ::preprocess2AndDiff(const QString &text1, const QString &text
         return diffList;
     }
 
-    if (text1.count() != text2.count())
-    {
-        const QString longtext = text1.count() > text2.count() ? text1 : text2;
-        const QString shorttext = text1.count() > text2.count() ? text2 : text1;
+    if (text1.size() != text2.size()) {
+        const QString longtext = text1.size() > text2.size() ? text1 : text2;
+        const QString shorttext = text1.size() > text2.size() ? text2 : text1;
         const int i = longtext.indexOf(shorttext);
         if (i != -1) {
-            const Diff::Command command = (text1.count() > text2.count())
+            const Diff::Command command = (text1.size() > text2.size())
                     ? Diff::Delete : Diff::Insert;
             diffList.append(Diff(command, longtext.left(i)));
             diffList.append(Diff(Diff::Equal, shorttext));
-            diffList.append(Diff(command, longtext.mid(i + shorttext.count())));
+            diffList.append(Diff(command, longtext.mid(i + shorttext.size())));
             return diffList;
         }
 
-        if (shorttext.count() == 1) {
+        if (shorttext.size() == 1) {
             diffList.append(Diff(Diff::Delete, text1));
             diffList.append(Diff(Diff::Insert, text2));
             return diffList;
         }
     }
 
-    if (m_currentDiffMode != Differ::CharMode && text1.count() > 80 && text2.count() > 80)
+    if (m_currentDiffMode != Differ::CharMode && text1.size() > 80 && text2.size() > 80)
         return diffNonCharMode(text1, text2);
 
     return diffMyers(text1, text2);
@@ -1054,8 +1053,8 @@ QList<Diff> Differ::preprocess2AndDiff(const QString &text1, const QString &text
 
 QList<Diff> Differ::diffMyers(const QString &text1, const QString &text2)
 {
-    const int n = text1.count();
-    const int m = text2.count();
+    const int n = text1.size();
+    const int m = text2.size();
     const bool odd = (n + m) % 2;
     const int D = odd ? (n + m) / 2 + 1 : (n + m) / 2;
     const int delta = n - m;
@@ -1191,12 +1190,12 @@ QList<Diff> Differ::diffNonCharMode(const QString &text1, const QString &text2)
     QString lastDelete;
     QString lastInsert;
     QList<Diff> newDiffList;
-    for (int i = 0; i <= diffList.count(); i++) {
+    for (int i = 0; i <= diffList.size(); i++) {
         if (m_future && m_future->isCanceled()) {
             m_currentDiffMode = diffMode;
             return {};
         }
-        const Diff diffItem = i < diffList.count()
+        const Diff diffItem = i < diffList.size()
                   ? diffList.at(i)
                   : Diff(Diff::Equal); // dummy, ensure we process to the end
                                        // even when diffList doesn't end with equality
@@ -1240,14 +1239,14 @@ int Differ::findSubtextEnd(const QString &text,
     if (m_currentDiffMode == Differ::LineMode) {
         int subtextEnd = text.indexOf('\n', subtextStart);
         if (subtextEnd == -1)
-            subtextEnd = text.count() - 1;
+            subtextEnd = text.size() - 1;
         return ++subtextEnd;
     } else if (m_currentDiffMode == Differ::WordMode) {
         if (!text.at(subtextStart).isLetter())
             return subtextStart + 1;
         int i = subtextStart + 1;
 
-        const int count = text.count();
+        const int count = text.size();
         while (i < count && text.at(i).isLetter())
             i++;
         return i;
@@ -1262,7 +1261,7 @@ QString Differ::encode(const QString &text,
     int subtextStart = 0;
     int subtextEnd = -1;
     QString codes;
-    while (subtextEnd < text.count()) {
+    while (subtextEnd < text.size()) {
         subtextEnd = findSubtextEnd(text, subtextStart);
         const QString line = text.mid(subtextStart, subtextEnd - subtextStart);
         subtextStart = subtextEnd;
@@ -1271,8 +1270,8 @@ QString Differ::encode(const QString &text,
             codes += QChar(static_cast<ushort>(lineToCode->value(line)));
         } else {
             lines->append(line);
-            lineToCode->insert(line, lines->count() - 1);
-            codes += QChar(static_cast<ushort>(lines->count() - 1));
+            lineToCode->insert(line, lines->size() - 1);
+            codes += QChar(static_cast<ushort>(lines->size() - 1));
         }
     }
     return codes;
@@ -1283,8 +1282,8 @@ QList<Diff> Differ::merge(const QList<Diff> &diffList)
     QString lastDelete;
     QString lastInsert;
     QList<Diff> newDiffList;
-    for (int i = 0; i <= diffList.count(); i++) {
-        Diff diff = i < diffList.count()
+    for (int i = 0; i <= diffList.size(); i++) {
+        Diff diff = i < diffList.size()
                   ? diffList.at(i)
                   : Diff(Diff::Equal); // dummy, ensure we process to the end
                                        // even when diffList doesn't end with equality
@@ -1314,8 +1313,8 @@ QList<Diff> Differ::merge(const QList<Diff> &diffList)
                 const int suffixCount = commonSuffix(lastDelete, lastInsert);
                 if (suffixCount) {
                     const QString suffix = lastDelete.right(suffixCount);
-                    lastDelete = lastDelete.left(lastDelete.count() - suffixCount);
-                    lastInsert = lastInsert.left(lastInsert.count() - suffixCount);
+                    lastDelete = lastDelete.left(lastDelete.size() - suffixCount);
+                    lastInsert = lastInsert.left(lastInsert.size() - suffixCount);
 
                     diff.text.prepend(suffix);
                 }
@@ -1342,7 +1341,7 @@ QList<Diff> Differ::merge(const QList<Diff> &diffList)
     }
 
     QList<Diff> squashedDiffList = squashEqualities(newDiffList);
-    if (squashedDiffList.count() != newDiffList.count())
+    if (squashedDiffList.size() != newDiffList.size())
         return merge(squashedDiffList);
 
     return squashedDiffList;
@@ -1363,8 +1362,8 @@ QList<Diff> Differ::cleanupSemantics(const QList<Diff> &diffList)
     int inserts = 0;
     // equality index, equality data
     QList<EqualityData> equalities;
-    for (int i = 0; i <= diffList.count(); i++) {
-        const Diff diff = i < diffList.count()
+    for (int i = 0; i <= diffList.size(); i++) {
+        const Diff diff = i < diffList.size()
                   ? diffList.at(i)
                   : Diff(Diff::Equal); // dummy, ensure we process to the end
                                        // even when diffList doesn't end with equality
@@ -1374,10 +1373,10 @@ QList<Diff> Differ::cleanupSemantics(const QList<Diff> &diffList)
                 previousData.deletesAfter = deletes;
                 previousData.insertsAfter = inserts;
             }
-            if (i < diffList.count()) { // don't insert dummy
+            if (i < diffList.size()) { // don't insert dummy
                 EqualityData data;
                 data.equalityIndex = i;
-                data.textCount = diff.text.count();
+                data.textCount = diff.text.size();
                 data.deletesBefore = deletes;
                 data.insertsBefore = inserts;
                 equalities.append(data);
@@ -1386,15 +1385,15 @@ QList<Diff> Differ::cleanupSemantics(const QList<Diff> &diffList)
             }
         } else {
             if (diff.command == Diff::Delete)
-                deletes += diff.text.count();
+                deletes += diff.text.size();
             else if (diff.command == Diff::Insert)
-                inserts += diff.text.count();
+                inserts += diff.text.size();
         }
     }
 
     QMap<int, bool> equalitiesToBeSplit;
     int i = 0;
-    while (i < equalities.count()) {
+    while (i < equalities.size()) {
         const EqualityData &data = equalities.at(i);
         if (data.textCount <= qMax(data.deletesBefore, data.insertsBefore)
                 && data.textCount <= qMax(data.deletesAfter, data.insertsAfter)) {
@@ -1403,7 +1402,7 @@ QList<Diff> Differ::cleanupSemantics(const QList<Diff> &diffList)
                 previousData.deletesAfter += data.textCount + data.deletesAfter;
                 previousData.insertsAfter += data.textCount + data.insertsAfter;
             }
-            if (i < equalities.count() - 1) {
+            if (i < equalities.size() - 1) {
                 EqualityData &nextData = equalities[i + 1];
                 nextData.deletesBefore += data.textCount + data.deletesBefore;
                 nextData.insertsBefore += data.textCount + data.insertsBefore;
@@ -1418,7 +1417,7 @@ QList<Diff> Differ::cleanupSemantics(const QList<Diff> &diffList)
     }
 
     QList<Diff> newDiffList;
-    for (int i = 0; i < diffList.count(); i++) {
+    for (int i = 0; i < diffList.size(); i++) {
         const Diff &diff = diffList.at(i);
         if (equalitiesToBeSplit.contains(i)) {
             newDiffList.append(Diff(Diff::Delete, diff.text));
@@ -1433,7 +1432,7 @@ QList<Diff> Differ::cleanupSemantics(const QList<Diff> &diffList)
 
 QList<Diff> Differ::cleanupSemanticsLossless(const QList<Diff> &diffList)
 {
-    if (diffList.count() < 3) // we need at least 3 items
+    if (diffList.size() < 3) // we need at least 3 items
         return diffList;
 
     QList<Diff> newDiffList;
@@ -1441,7 +1440,7 @@ QList<Diff> Differ::cleanupSemanticsLossless(const QList<Diff> &diffList)
     Diff thisDiff = diffList.at(1);
     Diff nextDiff = diffList.at(2);
     int i = 2;
-    while (i < diffList.count()) {
+    while (i < diffList.size()) {
         if (prevDiff.command == Diff::Equal
                 && nextDiff.command == Diff::Equal) {
 
@@ -1453,9 +1452,9 @@ QList<Diff> Differ::cleanupSemanticsLossless(const QList<Diff> &diffList)
             // Shift the edit as far left as possible
             const int suffixCount = commonSuffix(equality1, edit);
             if (suffixCount) {
-                const QString commonString = edit.mid(edit.count() - suffixCount);
-                equality1 = equality1.left(equality1.count() - suffixCount);
-                edit = commonString + edit.left(edit.count() - suffixCount);
+                const QString commonString = edit.mid(edit.size() - suffixCount);
+                equality1 = equality1.left(equality1.size() - suffixCount);
+                edit = commonString + edit.left(edit.size() - suffixCount);
                 equality2 = commonString + equality2;
             }
 
@@ -1488,7 +1487,7 @@ QList<Diff> Differ::cleanupSemanticsLossless(const QList<Diff> &diffList)
                 newDiffList.append(prevDiff); // append modified equality1
             if (bestEquality2.isEmpty()) {
                 i++;
-                if (i < diffList.count())
+                if (i < diffList.size())
                     nextDiff = diffList.at(i); // omit equality2
             }
         } else {
@@ -1497,11 +1496,11 @@ QList<Diff> Differ::cleanupSemanticsLossless(const QList<Diff> &diffList)
         prevDiff = thisDiff;
         thisDiff = nextDiff;
         i++;
-        if (i < diffList.count())
+        if (i < diffList.size())
             nextDiff = diffList.at(i);
     }
     newDiffList.append(prevDiff);
-    if (i == diffList.count())
+    if (i == diffList.size())
         newDiffList.append(thisDiff);
     return newDiffList;
 }
diff --git a/src/libs/utils/filenamevalidatinglineedit.cpp b/src/libs/utils/filenamevalidatinglineedit.cpp
index 5602e72d1a..47721b2312 100644
--- a/src/libs/utils/filenamevalidatinglineedit.cpp
+++ b/src/libs/utils/filenamevalidatinglineedit.cpp
@@ -151,12 +151,12 @@ bool FileNameValidatingLineEdit::validateFileNameExtension(const QString &fileNa
     if (!requiredExtensions.isEmpty()) {
         for (const QString &requiredExtension : requiredExtensions) {
             QString extension = QLatin1Char('.') + requiredExtension;
-            if (fileName.endsWith(extension, Qt::CaseSensitive) && extension.count() < fileName.count())
+            if (fileName.endsWith(extension, Qt::CaseSensitive) && extension.size() < fileName.size())
                 return true;
         }
 
         if (errorMessage) {
-            if (requiredExtensions.count() == 1)
+            if (requiredExtensions.size() == 1)
                 *errorMessage = Tr::tr("File extension %1 is required:").arg(requiredExtensions.first());
             else
                 *errorMessage = Tr::tr("File extensions %1 are required:").arg(requiredExtensions.join(QLatin1String(", ")));
diff --git a/src/libs/utils/highlightingitemdelegate.cpp b/src/libs/utils/highlightingitemdelegate.cpp
index a8b144dbdb..22d55e23bf 100644
--- a/src/libs/utils/highlightingitemdelegate.cpp
+++ b/src/libs/utils/highlightingitemdelegate.cpp
@@ -201,7 +201,7 @@ void HighlightingItemDelegate::drawText(QPainter *painter,
 static QString replaceNewLine(QString text)
 {
     static const QChar nl = '\n';
-    for (int i = 0; i < text.count(); ++i)
+    for (int i = 0; i < text.size(); ++i)
         if (text.at(i) == nl)
             text[i] = QChar::LineSeparator;
     return text;
diff --git a/src/libs/utils/outputformatter.cpp b/src/libs/utils/outputformatter.cpp
index 2bcdffb586..f8b3d8cec7 100644
--- a/src/libs/utils/outputformatter.cpp
+++ b/src/libs/utils/outputformatter.cpp
@@ -449,7 +449,7 @@ void OutputFormatter::append(const QString &text, const QTextCharFormat &format)
         d->cursor.movePosition(QTextCursor::StartOfBlock, QTextCursor::KeepAnchor);
         startPos = crPos + 1;
     }
-    if (startPos < text.count())
+    if (startPos < text.size())
         d->cursor.insertText(text.mid(startPos), format);
 }
 
diff --git a/src/libs/utils/projectintropage.cpp b/src/libs/utils/projectintropage.cpp
index dba9a801e4..0b1a0a6355 100644
--- a/src/libs/utils/projectintropage.cpp
+++ b/src/libs/utils/projectintropage.cpp
@@ -303,7 +303,7 @@ bool ProjectIntroPage::validateProjectName(const QString &name, QString *errorMe
 
         // if pos is set by validate it is cought at the bottom where it shows
         // a more detailed error message
-        if (validatorState != QValidator::Acceptable && (pos == -1 || pos >= name.count())) {
+        if (validatorState != QValidator::Acceptable && (pos == -1 || pos >= name.size())) {
             if (errorMessage) {
                 if (d->m_projectNameValidatorUserMessage.isEmpty())
                     *errorMessage = Tr::tr("Project name is invalid.");
diff --git a/src/libs/utils/templateengine.cpp b/src/libs/utils/templateengine.cpp
index e5636960de..a917ea27cb 100644
--- a/src/libs/utils/templateengine.cpp
+++ b/src/libs/utils/templateengine.cpp
@@ -235,9 +235,9 @@ QString TemplateEngine::processText(MacroExpander *expander, const QString &inpu
 
     // Expand \n, \t and handle line continuation:
     QString result;
-    result.reserve(out.count());
+    result.reserve(out.size());
     bool isEscaped = false;
-    for (int i = 0; i < out.count(); ++i) {
+    for (int i = 0; i < out.size(); ++i) {
         const QChar c = out.at(i);
 
         if (isEscaped) {
diff --git a/src/plugins/autotest/qtest/qttestoutputreader.cpp b/src/plugins/autotest/qtest/qttestoutputreader.cpp
index 70df35e663..9f10e06846 100644
--- a/src/plugins/autotest/qtest/qttestoutputreader.cpp
+++ b/src/plugins/autotest/qtest/qttestoutputreader.cpp
@@ -54,10 +54,10 @@ static QString formatResult(double value)
 
     QString beforeDecimalPoint = QString::number(value, 'f', 0);
     QString afterDecimalPoint = QString::number(value, 'f', 20);
-    afterDecimalPoint.remove(0, beforeDecimalPoint.count() + 1);
+    afterDecimalPoint.remove(0, beforeDecimalPoint.size() + 1);
 
-    const int beforeUse = qMin(beforeDecimalPoint.count(), significantDigits);
-    const int beforeRemove = beforeDecimalPoint.count() - beforeUse;
+    const int beforeUse = qMin(beforeDecimalPoint.size(), significantDigits);
+    const int beforeRemove = beforeDecimalPoint.size() - beforeUse;
 
     beforeDecimalPoint.chop(beforeRemove);
     for (int i = 0; i < beforeRemove; ++i)
@@ -67,12 +67,12 @@ static QString formatResult(double value)
     if (beforeDecimalPoint == QString("0") && !afterDecimalPoint.isEmpty()) {
         ++afterUse;
         int i = 0;
-        while (i < afterDecimalPoint.count() && afterDecimalPoint.at(i) == '0')
+        while (i < afterDecimalPoint.size() && afterDecimalPoint.at(i) == '0')
             ++i;
         afterUse += i;
     }
 
-    const int afterRemove = afterDecimalPoint.count() - afterUse;
+    const int afterRemove = afterDecimalPoint.size() - afterUse;
     afterDecimalPoint.chop(afterRemove);
 
     QString result = beforeDecimalPoint;
diff --git a/src/plugins/clangcodemodel/clangutils.cpp b/src/plugins/clangcodemodel/clangutils.cpp
index f236fa81b0..d5d7868137 100644
--- a/src/plugins/clangcodemodel/clangutils.cpp
+++ b/src/plugins/clangcodemodel/clangutils.cpp
@@ -230,7 +230,7 @@ QString DiagnosticTextInfo::option() const
         return QString();
 
     const int index = m_squareBracketStartIndex + 1;
-    return m_text.mid(index, m_text.count() - index - 1);
+    return m_text.mid(index, m_text.size() - index - 1);
 }
 
 QString DiagnosticTextInfo::category() const
diff --git a/src/plugins/cmakeprojectmanager/cmakeconfigitem.cpp b/src/plugins/cmakeprojectmanager/cmakeconfigitem.cpp
index baa884d9f2..2646c5c580 100644
--- a/src/plugins/cmakeprojectmanager/cmakeconfigitem.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakeconfigitem.cpp
@@ -215,13 +215,13 @@ bool CMakeConfigItem::less(const CMakeConfigItem &a, const CMakeConfigItem &b)
 CMakeConfigItem CMakeConfigItem::fromString(const QString &s)
 {
     // Strip comments (only at start of line!):
-    int commentStart = s.count();
-    for (int i = 0; i < s.count(); ++i) {
+    int commentStart = s.size();
+    for (int i = 0; i < s.size(); ++i) {
         const QChar c = s.at(i);
         if (c == ' ' || c == '\t')
             continue;
         else if ((c == '#')
-                 || (c == '/' && i < s.count() - 1 && s.at(i + 1) == '/')) {
+                 || (c == '/' && i < s.size() - 1 && s.at(i + 1) == '/')) {
             commentStart = i;
             break;
         } else {
@@ -234,7 +234,7 @@ CMakeConfigItem CMakeConfigItem::fromString(const QString &s)
     int firstPos = -1;
     int colonPos = -1;
     int equalPos = -1;
-    for (int i = 0; i < line.count(); ++i) {
+    for (int i = 0; i < line.size(); ++i) {
         const QChar c = s.at(i);
         if (firstPos < 0 && !c.isSpace()) {
             firstPos = i;
@@ -371,7 +371,7 @@ CMakeConfig CMakeConfig::fromFile(const Utils::FilePath &cacheFile, QString *err
         if (pieces.isEmpty())
             continue;
 
-        QTC_ASSERT(pieces.count() == 3, continue);
+        QTC_ASSERT(pieces.size() == 3, continue);
         const QByteArray key = pieces.at(0);
         const QByteArray type = pieces.at(1);
         const QByteArray value = pieces.at(2);
@@ -387,7 +387,7 @@ CMakeConfig CMakeConfig::fromFile(const Utils::FilePath &cacheFile, QString *err
     }
 
     // Set advanced flags:
-    for (int i = 0; i < result.count(); ++i) {
+    for (int i = 0; i < result.size(); ++i) {
         CMakeConfigItem &item = result[i];
         item.isAdvanced = advancedSet.contains(item.key);
 
diff --git a/src/plugins/cmakeprojectmanager/cmakeeditor.cpp b/src/plugins/cmakeprojectmanager/cmakeeditor.cpp
index 3411fd85b5..4bbe75b77c 100644
--- a/src/plugins/cmakeprojectmanager/cmakeeditor.cpp
+++ b/src/plugins/cmakeprojectmanager/cmakeeditor.cpp
@@ -169,7 +169,7 @@ void CMakeEditorWidget::findLinkAt(const QTextCursor &cursor,
 
     // find the end of a filename
     int endPos = column;
-    while (endPos < block.count()) {
+    while (endPos < block.size()) {
         if (isValidFileNameChar(block, endPos)) {
             buffer.append(block.at(endPos));
             endPos++;
diff --git a/src/plugins/coreplugin/find/searchresulttreeitemdelegate.cpp b/src/plugins/coreplugin/find/searchresulttreeitemdelegate.cpp
index dcaf86ecb9..274d79499a 100644
--- a/src/plugins/coreplugin/find/searchresulttreeitemdelegate.cpp
+++ b/src/plugins/coreplugin/find/searchresulttreeitemdelegate.cpp
@@ -28,7 +28,7 @@ static std::pair<int, QString> lineNumberInfo(const QStyleOptionViewItem &option
     if (lineNumber < 1)
         return {0, {}};
     const QString lineNumberText = QString::number(lineNumber);
-    const int lineNumberDigits = qMax(minimumLineNumberDigits, lineNumberText.count());
+    const int lineNumberDigits = qMax(minimumLineNumberDigits, lineNumberText.size());
     const int fontWidth = option.fontMetrics.horizontalAdvance(QString(lineNumberDigits, QLatin1Char('0')));
     const QStyle *style = option.widget ? option.widget->style() : QApplication::style();
     return {lineNumberAreaHorizontalPadding + fontWidth + lineNumberAreaHorizontalPadding
diff --git a/src/plugins/coreplugin/helpitem.cpp b/src/plugins/coreplugin/helpitem.cpp
index 7245a4769b..cbe0998e03 100644
--- a/src/plugins/coreplugin/helpitem.cpp
+++ b/src/plugins/coreplugin/helpitem.cpp
@@ -177,7 +177,7 @@ QString HelpItem::extractContent(bool extended) const
 // include separators for major vs minor vs patch version.
 static QVersionNumber qtVersionHeuristic(const QString &digits)
 {
-    if (digits.count() > 6 || digits.count() < 3)
+    if (digits.size() > 6 || digits.size() < 3)
         return {}; // suspicious version number
 
     for (const QChar &digit : digits)
@@ -188,7 +188,7 @@ static QVersionNumber qtVersionHeuristic(const QString &digits)
     // When we have 4 digits, we split it like: ABCD -> A.BC.D
     // When we have 5 digits, we split it like: ABCDE -> A.BC.DE
     // When we have 6 digits, we split it like: ABCDEF -> AB.CD.EF
-    switch (digits.count()) {
+    switch (digits.size()) {
     case 3:
         return QVersionNumber(digits.mid(0, 1).toInt(),
                               digits.mid(1, 1).toInt(),
diff --git a/src/plugins/coreplugin/vcsmanager.cpp b/src/plugins/coreplugin/vcsmanager.cpp
index f9da6ee59f..4b5e60b2fc 100644
--- a/src/plugins/coreplugin/vcsmanager.cpp
+++ b/src/plugins/coreplugin/vcsmanager.cpp
@@ -80,7 +80,7 @@ public:
         QTC_ASSERT((topLevel.isEmpty() && !vc) || (!topLevel.isEmpty() && vc), return);
 
         FilePath tmpDir = dir;
-        while (tmpDir.toString().count() >= topLevelString.count() && !tmpDir.isEmpty()) {
+        while (tmpDir.toString().size() >= topLevelString.size() && !tmpDir.isEmpty()) {
             m_cachedMatches.insert(tmpDir, {vc, topLevel});
             // if no vc was found, this might mean we're inside a repo internal directory (.git)
             // Cache only input directory, not parents
@@ -237,7 +237,7 @@ IVersionControl* VcsManager::findVersionControlForDirectory(const FilePath &inpu
         for (auto i = allThatCanManage.constBegin(); i != allThatCanManage.constEnd(); ++i) {
             const QString firstString = i->first.toString();
             // If topLevel was already cached for another VC, skip this one
-            if (tmpDir.toString().count() < firstString.count())
+            if (tmpDir.toString().size() < firstString.size())
                 continue;
             d->cache(i->second, i->first, tmpDir);
             tmpDir = i->first.parentDir();
@@ -458,7 +458,7 @@ static FileHash makeHash(const QStringList &list)
     FileHash result;
     for (const QString &i : list) {
         QStringList parts = i.split(QLatin1Char(':'));
-        QTC_ASSERT(parts.count() == 2, continue);
+        QTC_ASSERT(parts.size() == 2, continue);
         result.insert(FilePath::fromString(QString::fromLatin1(TEST_PREFIX) + parts.at(0)),
                       FilePath::fromString(QString::fromLatin1(TEST_PREFIX) + parts.at(1)));
     }
@@ -547,7 +547,7 @@ void CorePlugin::testVcsManager()
         // qDebug() << "Expecting:" << result;
 
         const QStringList split = result.split(QLatin1Char(':'));
-        QCOMPARE(split.count(), 4);
+        QCOMPARE(split.size(), 4);
         QVERIFY(split.at(3) == QLatin1String("*") || split.at(3) == QLatin1String("-"));
 
 
diff --git a/src/plugins/cppeditor/cppqtstyleindenter.cpp b/src/plugins/cppeditor/cppqtstyleindenter.cpp
index adf514f6e7..cbcaad47a2 100644
--- a/src/plugins/cppeditor/cppqtstyleindenter.cpp
+++ b/src/plugins/cppeditor/cppqtstyleindenter.cpp
@@ -58,7 +58,7 @@ static bool isElectricInLine(const QChar ch, const QString &text)
     case '<':
     case '>': {
         // Electric if at line beginning (after space indentation)
-        for (int i = 0, len = text.count(); i < len; ++i) {
+        for (int i = 0, len = text.size(); i < len; ++i) {
             if (!text.at(i).isSpace())
                 return text.at(i) == ch;
         }
diff --git a/src/plugins/designer/qtcreatorintegration.cpp b/src/plugins/designer/qtcreatorintegration.cpp
index 010ab85a82..9c73ee755c 100644
--- a/src/plugins/designer/qtcreatorintegration.cpp
+++ b/src/plugins/designer/qtcreatorintegration.cpp
@@ -339,7 +339,7 @@ static QString addConstRefIfNeeded(const QString &argument)
                                                          "long", "short", "char", "signed",
                                                          "unsigned", "qint64", "quint64"});
 
-    for (int i = 0; i < nonConstRefs.count(); i++) {
+    for (int i = 0; i < nonConstRefs.size(); i++) {
         const QString &nonConstRef = nonConstRefs.at(i);
         if (argument == nonConstRef || argument.startsWith(nonConstRef + ' '))
             return argument;
@@ -350,7 +350,7 @@ static QString addConstRefIfNeeded(const QString &argument)
 static QString formatArgument(const QString &argument)
 {
     QString formattedArgument = argument;
-    int i = argument.count();
+    int i = argument.size();
     while (i > 0) { // from the end of the "argument" string
         i--;
         const QChar c = argument.at(i); // take the char
@@ -373,8 +373,8 @@ static QString addParameterNames(const QString &functionSignature, const QString
     if (lastParen != -1)
         argumentsString.truncate(lastParen);
     const QStringList arguments = argumentsString.split(',', Qt::SkipEmptyParts);
-    const int pCount = parameterNames.count();
-    const int aCount = arguments.count();
+    const int pCount = parameterNames.size();
+    const int aCount = arguments.size();
     for (int i = 0; i < aCount; ++i) {
         if (i > 0)
             functionName += ", ";
diff --git a/src/plugins/diffeditor/sidebysidediffeditorwidget.cpp b/src/plugins/diffeditor/sidebysidediffeditorwidget.cpp
index d2f58f83ac..ef8e250497 100644
--- a/src/plugins/diffeditor/sidebysidediffeditorwidget.cpp
+++ b/src/plugins/diffeditor/sidebysidediffeditorwidget.cpp
@@ -316,7 +316,7 @@ static SideBySideDiffOutput diffOutput(QPromise<SideBySideShowResults> &promise,
             addChunkLine(RightSide, -2);
             blockNumber++;
         } else {
-            for (int j = 0; j < contextFileData.chunks.count(); j++) {
+            for (int j = 0; j < contextFileData.chunks.size(); j++) {
                 const ChunkData &chunkData = contextFileData.chunks.at(j);
 
                 int leftLineNumber = chunkData.startingLineNumber[LeftSide];
@@ -331,7 +331,7 @@ static SideBySideDiffOutput diffOutput(QPromise<SideBySideShowResults> &promise,
                         blockNumber++;
                     }
 
-                    const int rows = chunkData.rows.count();
+                    const int rows = chunkData.rows.size();
                     output.side[LeftSide].diffData.m_chunkInfo.setChunkIndex(blockNumber, rows, j);
                     output.side[RightSide].diffData.m_chunkInfo.setChunkIndex(blockNumber, rows, j);
 
@@ -342,11 +342,11 @@ static SideBySideDiffOutput diffOutput(QPromise<SideBySideShowResults> &promise,
                     }
                 }
 
-                if (j == contextFileData.chunks.count() - 1) { // the last chunk
+                if (j == contextFileData.chunks.size() - 1) { // the last chunk
                     int skippedLines = -2;
                     if (chunkData.contextChunk) {
                         // if it's context chunk
-                        skippedLines = chunkData.rows.count();
+                        skippedLines = chunkData.rows.size();
                     } else if (!contextFileData.lastChunkAtTheEndOfFile
                                && !contextFileData.contextChunksIncluded) {
                         // if not a context chunk and not a chunk at the end of file
@@ -381,7 +381,7 @@ void SideDiffData::setLineNumber(int blockNumber, int lineNumber)
 {
     const QString lineNumberString = QString::number(lineNumber);
     m_lineNumbers.insert(blockNumber, lineNumber);
-    m_lineNumberDigits = qMax(m_lineNumberDigits, lineNumberString.count());
+    m_lineNumberDigits = qMax(m_lineNumberDigits, lineNumberString.size());
 }
 
 void SideDiffData::setFileInfo(int blockNumber, const DiffFileInfo &fileInfo)
@@ -986,7 +986,7 @@ void SideBySideDiffEditorWidget::setFontSettings(const FontSettings &fontSetting
 void SideBySideDiffEditorWidget::jumpToOriginalFileRequested(DiffSide side, int diffFileIndex,
                                                              int lineNumber, int columnNumber)
 {
-    if (diffFileIndex < 0 || diffFileIndex >= m_controller.m_contextFileData.count())
+    if (diffFileIndex < 0 || diffFileIndex >= m_controller.m_contextFileData.size())
         return;
 
     const FileData fileData = m_controller.m_contextFileData.at(diffFileIndex);
@@ -1007,7 +1007,7 @@ void SideBySideDiffEditorWidget::jumpToOriginalFileRequested(DiffSide side, int
         int thisLineNumber = chunkData.startingLineNumber[side];
         int otherLineNumber = chunkData.startingLineNumber[otherSide];
 
-        for (int j = 0; j < chunkData.rows.count(); j++) {
+        for (int j = 0; j < chunkData.rows.size(); j++) {
             const RowData rowData = chunkData.rows.at(j);
             if (rowData.line[side].textLineType == TextLineData::TextLine)
                 thisLineNumber++;
diff --git a/src/plugins/git/commitdata.cpp b/src/plugins/git/commitdata.cpp
index 172d30e2c5..1bc66adf0d 100644
--- a/src/plugins/git/commitdata.cpp
+++ b/src/plugins/git/commitdata.cpp
@@ -91,7 +91,7 @@ bool operator<(const CommitData::StateFilePair &a, const CommitData::StateFilePa
 
 bool CommitData::checkLine(const QString &stateInfo, const QString &file)
 {
-    QTC_ASSERT(stateInfo.count() == 2, return false);
+    QTC_ASSERT(stateInfo.size() == 2, return false);
 
     if (stateInfo == "??") {
         files.push_back({FileStates(UntrackedFile), file});
diff --git a/src/plugins/git/gitclient.cpp b/src/plugins/git/gitclient.cpp
index 4f2bdc4912..a30e6b3368 100644
--- a/src/plugins/git/gitclient.cpp
+++ b/src/plugins/git/gitclient.cpp
@@ -2405,7 +2405,7 @@ QStringList GitClient::synchronousRepositoryBranches(const QString &repositoryUR
         const int pos = line.lastIndexOf(pattern);
         if (pos != -1) {
             branchFound = true;
-            const QString branchName = line.mid(pos + pattern.count());
+            const QString branchName = line.mid(pos + pattern.size());
             if (!headFound && line.startsWith(headSha)) {
                 branches[0] = branchName;
                 headFound = true;
@@ -2816,7 +2816,7 @@ bool GitClient::addAndCommit(const FilePath &repositoryDirectory,
             if (state & (ModifiedFile | AddedFile | DeletedFile | TypeChangedFile)) {
                 filesToReset.append(file);
             } else if (state & (RenamedFile | CopiedFile)) {
-                const QString newFile = file.mid(file.indexOf(renameSeparator) + renameSeparator.count());
+                const QString newFile = file.mid(file.indexOf(renameSeparator) + renameSeparator.size());
                 filesToReset.append(newFile);
             }
         } else if (state & UnmergedFile && checked) {
diff --git a/src/plugins/projectexplorer/kit.cpp b/src/plugins/projectexplorer/kit.cpp
index b0d370d13c..27bad16e8c 100644
--- a/src/plugins/projectexplorer/kit.cpp
+++ b/src/plugins/projectexplorer/kit.cpp
@@ -578,7 +578,7 @@ QString Kit::toHtml(const Tasks &additional, const QString &extraText) const
         const KitAspect::ItemList list = aspect->toUserOutput(this);
         for (const KitAspect::Item &j : list) {
             QString contents = j.second;
-            if (contents.count() > 256) {
+            if (contents.size() > 256) {
                 int pos = contents.lastIndexOf("<br>", 256);
                 if (pos < 0) // no linebreak, so cut early.
                     pos = 80;
diff --git a/src/plugins/projectexplorer/rawprojectpart.cpp b/src/plugins/projectexplorer/rawprojectpart.cpp
index 31147c3803..81d4951ed0 100644
--- a/src/plugins/projectexplorer/rawprojectpart.cpp
+++ b/src/plugins/projectexplorer/rawprojectpart.cpp
@@ -45,9 +45,10 @@ void RawProjectPart::setFiles(const QStringList &files,
     this->getMimeType = getMimeType;
 }
 
-static QString trimTrailingSlashes(const QString &path) {
+static QString trimTrailingSlashes(const QString &path)
+{
     QString p = path;
-    while (p.endsWith('/') && p.count() > 1) {
+    while (p.endsWith('/') && p.size() > 1) {
         p.chop(1);
     }
     return p;
diff --git a/src/plugins/projectexplorer/taskfile.cpp b/src/plugins/projectexplorer/taskfile.cpp
index c967521d89..b6a95c0325 100644
--- a/src/plugins/projectexplorer/taskfile.cpp
+++ b/src/plugins/projectexplorer/taskfile.cpp
@@ -79,9 +79,9 @@ static QStringList parseRawLine(const QByteArray &raw)
 static QString unescape(const QString &input)
 {
     QString result;
-    for (int i = 0; i < input.count(); ++i) {
+    for (int i = 0; i < input.size(); ++i) {
         if (input.at(i) == '\\') {
-            if (i == input.count() - 1)
+            if (i == input.size() - 1)
                 continue;
             if (input.at(i + 1) == 'n') {
                 result.append('\n');
@@ -123,16 +123,16 @@ static bool parseTaskFile(QString *errorString, const FilePath &name)
         Task::TaskType type = Task::Unknown;
         int line = -1;
 
-        if (chunks.count() == 1) {
+        if (chunks.size() == 1) {
             description = chunks.at(0);
-        } else if (chunks.count() == 2) {
+        } else if (chunks.size() == 2) {
             type = typeFrom(chunks.at(0));
             description = chunks.at(1);
-        } else if (chunks.count() == 3) {
+        } else if (chunks.size() == 3) {
             file = chunks.at(0);
             type = typeFrom(chunks.at(1));
             description = chunks.at(2);
-        } else if (chunks.count() >= 4) {
+        } else if (chunks.size() >= 4) {
             file = chunks.at(0);
             bool ok;
             line = chunks.at(1).toInt(&ok);
diff --git a/src/plugins/qmakeprojectmanager/profileeditor.cpp b/src/plugins/qmakeprojectmanager/profileeditor.cpp
index c17d3d9193..1a3e15fdd5 100644
--- a/src/plugins/qmakeprojectmanager/profileeditor.cpp
+++ b/src/plugins/qmakeprojectmanager/profileeditor.cpp
@@ -142,7 +142,7 @@ void ProFileEditorWidget::findLinkAt(const QTextCursor &cursor,
     bool doBackwardScan = true;
 
     if (posCurlyPwd >= 0) {
-        const int end = chunkStart + posCurlyPwd + curlyPwd.count();
+        const int end = chunkStart + posCurlyPwd + curlyPwd.size();
         const int start = chunkStart + posCurlyPwd;
         if (start <= column && end >= column) {
             buffer = pwd;
@@ -151,7 +151,7 @@ void ProFileEditorWidget::findLinkAt(const QTextCursor &cursor,
             doBackwardScan = false;
         }
     } else if (posPwd >= 0) {
-        const int end = chunkStart + posPwd + pwd.count();
+        const int end = chunkStart + posPwd + pwd.size();
         const int start = chunkStart + posPwd;
         if (start <= column && end >= column) {
             buffer = pwd;
@@ -173,19 +173,19 @@ void ProFileEditorWidget::findLinkAt(const QTextCursor &cursor,
 
     if (doBackwardScan
             && beginPos > 0
-            && block.mid(beginPos - 1, pwd.count()) == pwd
-            && (block.at(beginPos + pwd.count() - 1) == '/' || block.at(beginPos + pwd.count() - 1) == '\\')) {
+            && block.mid(beginPos - 1, pwd.size()) == pwd
+            && (block.at(beginPos + pwd.size() - 1) == '/' || block.at(beginPos + pwd.size() - 1) == '\\')) {
         buffer.prepend("$$");
         beginPos -= 2;
     } else if (doBackwardScan
-               && beginPos >= curlyPwd.count() - 1
-               && block.mid(beginPos - curlyPwd.count() + 1, curlyPwd.count()) == curlyPwd) {
+               && beginPos >= curlyPwd.size() - 1
+               && block.mid(beginPos - curlyPwd.size() + 1, curlyPwd.size()) == curlyPwd) {
         buffer.prepend(pwd);
-        beginPos -= curlyPwd.count();
+        beginPos -= curlyPwd.size();
     }
 
     // find the end of a filename
-    while (endPos < block.count()) {
+    while (endPos < block.size()) {
         QChar c = block.at(endPos);
         if (isValidFileNameChar(c)) {
             buffer.append(c);
diff --git a/src/plugins/qmldesigner/designercore/model/modelmerger.cpp b/src/plugins/qmldesigner/designercore/model/modelmerger.cpp
index 30d100f350..a9fa1ebd19 100644
--- a/src/plugins/qmldesigner/designercore/model/modelmerger.cpp
+++ b/src/plugins/qmldesigner/designercore/model/modelmerger.cpp
@@ -83,7 +83,7 @@ static void splitIdInBaseNameAndNumber(const QString &id, QString *baseId, int *
 {
 
     int counter = 0;
-    while (counter < id.count()) {
+    while (counter < id.size()) {
         bool canConvertToInteger = false;
         int newNumber = id.right(counter + 1).toInt(&canConvertToInteger);
         if (canConvertToInteger)
@@ -94,7 +94,7 @@ static void splitIdInBaseNameAndNumber(const QString &id, QString *baseId, int *
         counter++;
     }
 
-    *baseId = id.left(id.count() - counter);
+    *baseId = id.left(id.size() - counter);
 }
 
 static void setupIdRenamingHash(const ModelNode &modelNode, QHash<QString, QString> &idRenamingHash, AbstractView *view)
diff --git a/src/plugins/qmldesigner/designercore/model/qmltextgenerator.cpp b/src/plugins/qmldesigner/designercore/model/qmltextgenerator.cpp
index c283bf5b26..af9b6a2425 100644
--- a/src/plugins/qmldesigner/designercore/model/qmltextgenerator.cpp
+++ b/src/plugins/qmldesigner/designercore/model/qmltextgenerator.cpp
@@ -49,7 +49,7 @@ inline static QString doubleToString(const PropertyName &propertyName, double d)
 
 static QString unicodeEscape(const QString &stringValue)
 {
-    if (stringValue.count() == 1) {
+    if (stringValue.size() == 1) {
         ushort code = stringValue.at(0).unicode();
         bool isUnicode = code <= 127;
         if (isUnicode) {
@@ -289,7 +289,7 @@ QString QmlTextGenerator::escape(const QString &value)
 {
     QString result = value;
 
-    if (value.count() == 6 && value.startsWith("\\u")) //Do not dobule escape unicode chars
+    if (value.size() == 6 && value.startsWith("\\u")) //Do not dobule escape unicode chars
         return result;
 
     result.replace(QStringLiteral("\\"), QStringLiteral("\\\\"));
diff --git a/src/plugins/qmldesigner/designercore/model/stylesheetmerger.cpp b/src/plugins/qmldesigner/designercore/model/stylesheetmerger.cpp
index 2a6b9f0fbf..90891cbc8c 100644
--- a/src/plugins/qmldesigner/designercore/model/stylesheetmerger.cpp
+++ b/src/plugins/qmldesigner/designercore/model/stylesheetmerger.cpp
@@ -65,7 +65,7 @@ static void splitIdInBaseNameAndNumber(const QString &id, QString *baseId, int *
 {
 
     int counter = 0;
-    while (counter < id.count()) {
+    while (counter < id.size()) {
         bool canConvertToInteger = false;
         int newNumber = id.right(counter + 1).toInt(&canConvertToInteger);
         if (canConvertToInteger)
@@ -76,7 +76,7 @@ static void splitIdInBaseNameAndNumber(const QString &id, QString *baseId, int *
         counter++;
     }
 
-    *baseId = id.left(id.count() - counter);
+    *baseId = id.left(id.size() - counter);
 }
 
 void StylesheetMerger::syncNodeProperties(ModelNode &outputNode, const ModelNode &inputNode, bool skipDuplicates)
diff --git a/src/plugins/qmldesigner/designercore/model/texttomodelmerger.cpp b/src/plugins/qmldesigner/designercore/model/texttomodelmerger.cpp
index 43a4316198..3b5df397ea 100644
--- a/src/plugins/qmldesigner/designercore/model/texttomodelmerger.cpp
+++ b/src/plugins/qmldesigner/designercore/model/texttomodelmerger.cpp
@@ -165,7 +165,7 @@ bool isHexDigit(ushort c)
 
 QString fixEscapedUnicodeChar(const QString &value) //convert "\u2939"
 {
-    if (value.count() == 6 && value.at(0) == QLatin1Char('\\') && value.at(1) == QLatin1Char('u') &&
+    if (value.size() == 6 && value.at(0) == QLatin1Char('\\') && value.at(1) == QLatin1Char('u') &&
         isHexDigit(value.at(2).unicode()) && isHexDigit(value.at(3).unicode()) &&
         isHexDigit(value.at(4).unicode()) && isHexDigit(value.at(5).unicode())) {
             return convertUnicode(value.at(2).unicode(), value.at(3).unicode(), value.at(4).unicode(), value.at(5).unicode());
@@ -655,7 +655,7 @@ public:
     {
         QStringList astValueList = astValue.split(QStringLiteral("."));
 
-        if (astValueList.count() == 2) {
+        if (astValueList.size() == 2) {
             //Check for global Qt enums
             if (astValueList.constFirst() == QStringLiteral("Qt")
                     && globalQtEnums().contains(astValueList.constLast()))
diff --git a/src/plugins/qtsupport/baseqtversion.cpp b/src/plugins/qtsupport/baseqtversion.cpp
index 4720718a86..d6f2efacef 100644
--- a/src/plugins/qtsupport/baseqtversion.cpp
+++ b/src/plugins/qtsupport/baseqtversion.cpp
@@ -2130,7 +2130,7 @@ static QStringList extractFieldsFromBuildString(const QByteArray &buildString)
 
     const QString endian = abiInfo.takeFirst();
     QTC_ASSERT(endian.endsWith("_endian"), return QStringList());
-    result.append(endian.left(endian.count() - 7)); // without the "_endian"
+    result.append(endian.left(endian.size() - 7)); // without the "_endian"
 
     result.append(abiInfo.takeFirst()); // pointer
 
@@ -2160,7 +2160,7 @@ static QStringList extractFieldsFromBuildString(const QByteArray &buildString)
 static Abi refineAbiFromBuildString(const QByteArray &buildString, const Abi &probableAbi)
 {
     QStringList buildStringData = extractFieldsFromBuildString(buildString);
-    if (buildStringData.count() != 9)
+    if (buildStringData.size() != 9)
         return probableAbi;
 
     const QString compiler = buildStringData.at(8);
diff --git a/src/plugins/texteditor/snippets/snippet.cpp b/src/plugins/texteditor/snippets/snippet.cpp
index 74a4dc543c..0b3bd080e7 100644
--- a/src/plugins/texteditor/snippets/snippet.cpp
+++ b/src/plugins/texteditor/snippets/snippet.cpp
@@ -189,7 +189,7 @@ SnippetParseResult Snippet::parse(const QString &snippet)
     if (!errorMessage.isEmpty())
         return {SnippetParseError{errorMessage, {}, -1}};
 
-    const int count = preprocessedSnippet.count();
+    const int count = preprocessedSnippet.size();
     NameMangler *mangler = nullptr;
 
     QMap<QString, int> variableIndexes;
@@ -404,7 +404,7 @@ void Internal::TextEditorPlugin::testSnippetParsing()
         QCOMPARE(manglerId, expected.manglerId);
     };
 
-    for (int i = 0; i < parts.count(); ++i)
+    for (int i = 0; i < parts.size(); ++i)
         rangesCompare(snippet.parts.at(i), parts.at(i));
 }
 #endif
diff --git a/src/tools/sdktool/addqtoperation.cpp b/src/tools/sdktool/addqtoperation.cpp
index ee48c1e5ec..61e19855ff 100644
--- a/src/tools/sdktool/addqtoperation.cpp
+++ b/src/tools/sdktool/addqtoperation.cpp
@@ -270,7 +270,7 @@ QVariantMap AddQtData::addQt(const QVariantMap &map) const
     for (QVariantMap::const_iterator i = map.begin(); i != map.end(); ++i) {
         if (!i.key().startsWith(QLatin1String(PREFIX)))
             continue;
-        QString number = i.key().mid(QString::fromLatin1(PREFIX).count());
+        QString number = i.key().mid(QString::fromLatin1(PREFIX).size());
         bool ok;
         int count = number.toInt(&ok);
         if (ok && count >= versionCount)