Convert a few sizeof(array)/sizeof(element0) fors to range fors

Increases readability

Change-Id: I81ea915517fd2cd6bc2780f37ba8d8097c63f44b
Reviewed-by: Thiago Macieira <thiago.macieira@intel.com>
Reviewed-by: Volker Hilsheimer <volker.hilsheimer@qt.io>

7 files changed, 37 insertions, 45 deletions

diff --git a/src/corelib/io/qsettings.cpp b/src/corelib/io/qsettings.cpp
index 4a119a1e2f..fc7122d904 100644
--- a/src/corelib/io/qsettings.cpp
+++ b/src/corelib/io/qsettings.cpp
@@ -746,7 +746,6 @@ bool QSettingsPrivate::iniUnescapedStringList(const QByteArray &str, int from, i
         { '\'', '\'' },
         { '\\', '\\' }
     };
-    static const int numEscapeCodes = sizeof(escapeCodes) / sizeof(escapeCodes[0]);
 
     bool isStringList = false;
     bool inQuotedString = false;
@@ -770,9 +769,9 @@ StNormal:
                 goto end;
 
             ch = str.at(i++);
-            for (int j = 0; j < numEscapeCodes; ++j) {
-                if (ch == escapeCodes[j][0]) {
-                    stringResult += QLatin1Char(escapeCodes[j][1]);
+            for (const auto &escapeCode : escapeCodes) {
+                if (ch == escapeCode[0]) {
+                    stringResult += QLatin1Char(escapeCode[1]);
                     goto StNormal;
                 }
             }
diff --git a/src/dbus/qdbus_symbols.cpp b/src/dbus/qdbus_symbols.cpp
index 284ba999c2..1e2cbf6da6 100644
--- a/src/dbus/qdbus_symbols.cpp
+++ b/src/dbus/qdbus_symbols.cpp
@@ -100,15 +100,15 @@ bool qdbus_loadLibDBus()
     };
 
     lib->unload();
-    for (uint i = 0; i < sizeof(majorversions) / sizeof(majorversions[0]); ++i) {
-        for (uint j = 0; j < sizeof(baseNames) / sizeof(baseNames[0]); ++j) {
+    for (const int majorversion : majorversions) {
+        for (const QString &baseName : baseNames) {
 #ifdef Q_OS_WIN
             QString suffix;
-            if (majorversions[i] != -1)
-                suffix = QString::number(- majorversions[i]); // negative so it prepends the dash
-            lib->setFileName(baseNames[j] + suffix);
+            if (majorversion != -1)
+                suffix = QString::number(- majorversion); // negative so it prepends the dash
+            lib->setFileName(baseName + suffix);
 #else
-            lib->setFileNameAndVersion(baseNames[j], majorversions[i]);
+            lib->setFileNameAndVersion(baseName, majorversion);
 #endif
             if (lib->load() && lib->resolve("dbus_connection_open_private"))
                 return true;
diff --git a/src/gui/painting/qpagesize.cpp b/src/gui/painting/qpagesize.cpp
index a1c9f6e417..c98ca8a1fb 100644
--- a/src/gui/painting/qpagesize.cpp
+++ b/src/gui/painting/qpagesize.cpp
@@ -222,8 +222,6 @@ static const int qt_windowsConversion[][2] = {
     {DMPAPER_PENV_10_ROTATED,               DMPAPER_PENV_10}  // Is = DMPAPER_LAST, use as loop terminator
 };
 
-static const int windowsConversionCount = int(sizeof(qt_windowsConversion) / sizeof(qt_windowsConversion[0]));
-
 // Standard sizes data
 struct StandardPageSize {
     QPageSize::PageSizeId id;
@@ -423,9 +421,9 @@ static QPageSize::PageSizeId qt_idForWindowsID(int windowsId, QSize *match = 0)
     if (windowsId <= DMPAPER_NONE || windowsId > DMPAPER_LAST)
         return QPageSize::Custom;
     // Check if one of the unsupported values, convert to valid value if is
-    for (int i = 0; i < windowsConversionCount; ++i) {
-        if (qt_windowsConversion[i][0] == windowsId) {
-            windowsId = qt_windowsConversion[i][1];
+    for (const auto &it : qt_windowsConversion) {
+        if (it[0] == windowsId) {
+            windowsId = it[1];
             break;
         }
     }
diff --git a/src/gui/rhi/qrhivulkan.cpp b/src/gui/rhi/qrhivulkan.cpp
index cb32aa08f3..36a6557e04 100644
--- a/src/gui/rhi/qrhivulkan.cpp
+++ b/src/gui/rhi/qrhivulkan.cpp
@@ -3241,12 +3241,12 @@ QVector<int> QRhiVulkan::supportedSampleCounts() const
     VkSampleCountFlags stencil = limits->framebufferStencilSampleCounts;
     QVector<int> result;
 
-    for (size_t i = 0; i < sizeof(qvk_sampleCounts) / sizeof(qvk_sampleCounts[0]); ++i) {
-        if ((color & qvk_sampleCounts[i].mask)
-                && (depth & qvk_sampleCounts[i].mask)
-                && (stencil & qvk_sampleCounts[i].mask))
+    for (const auto &qvk_sampleCount : qvk_sampleCounts) {
+        if ((color & qvk_sampleCount.mask)
+                && (depth & qvk_sampleCount.mask)
+                && (stencil & qvk_sampleCount.mask))
         {
-            result.append(qvk_sampleCounts[i].count);
+            result.append(qvk_sampleCount.count);
         }
     }
 
@@ -3263,9 +3263,9 @@ VkSampleCountFlagBits QRhiVulkan::effectiveSampleCount(int sampleCount)
         return VK_SAMPLE_COUNT_1_BIT;
     }
 
-    for (size_t i = 0; i < sizeof(qvk_sampleCounts) / sizeof(qvk_sampleCounts[0]); ++i) {
-        if (qvk_sampleCounts[i].count == sampleCount)
-            return qvk_sampleCounts[i].mask;
+    for (const auto &qvk_sampleCount : qvk_sampleCounts) {
+        if (qvk_sampleCount.count == sampleCount)
+            return qvk_sampleCount.mask;
     }
 
     Q_UNREACHABLE();
diff --git a/src/gui/vulkan/qvulkanwindow.cpp b/src/gui/vulkan/qvulkanwindow.cpp
index 6d12377a60..4b5c2b56ee 100644
--- a/src/gui/vulkan/qvulkanwindow.cpp
+++ b/src/gui/vulkan/qvulkanwindow.cpp
@@ -498,12 +498,12 @@ QVector<int> QVulkanWindow::supportedSampleCounts()
     VkSampleCountFlags depth = limits->framebufferDepthSampleCounts;
     VkSampleCountFlags stencil = limits->framebufferStencilSampleCounts;
 
-    for (size_t i = 0; i < sizeof(qvk_sampleCounts) / sizeof(qvk_sampleCounts[0]); ++i) {
-        if ((color & qvk_sampleCounts[i].mask)
-                && (depth & qvk_sampleCounts[i].mask)
-                && (stencil & qvk_sampleCounts[i].mask))
+    for (const auto &qvk_sampleCount : qvk_sampleCounts) {
+        if ((color & qvk_sampleCount.mask)
+                && (depth & qvk_sampleCount.mask)
+                && (stencil & qvk_sampleCount.mask))
         {
-            result.append(qvk_sampleCounts[i].count);
+            result.append(qvk_sampleCount.count);
         }
     }
 
@@ -547,9 +547,9 @@ void QVulkanWindow::setSampleCount(int sampleCount)
         return;
     }
 
-    for (size_t i = 0; i < sizeof(qvk_sampleCounts) / sizeof(qvk_sampleCounts[0]); ++i) {
-        if (qvk_sampleCounts[i].count == sampleCount) {
-            d->sampleCount = qvk_sampleCounts[i].mask;
+    for (const auto &qvk_sampleCount : qvk_sampleCounts) {
+        if (qvk_sampleCount.count == sampleCount) {
+            d->sampleCount = qvk_sampleCount.mask;
             return;
         }
     }
diff --git a/src/network/access/qhttp2protocolhandler.cpp b/src/network/access/qhttp2protocolhandler.cpp
index 9bf5547f15..dce51d4fd5 100644
--- a/src/network/access/qhttp2protocolhandler.cpp
+++ b/src/network/access/qhttp2protocolhandler.cpp
@@ -1339,14 +1339,13 @@ void QHttp2ProtocolHandler::markAsReset(quint32 streamID)
 quint32 QHttp2ProtocolHandler::popStreamToResume()
 {
     quint32 streamID = connectionStreamID;
-    const int nQ = sizeof suspendedStreams / sizeof suspendedStreams[0];
     using QNR = QHttpNetworkRequest;
-    const QNR::Priority ranks[nQ] = {QNR::HighPriority,
-                                     QNR::NormalPriority,
-                                     QNR::LowPriority};
+    const QNR::Priority ranks[] = {QNR::HighPriority,
+                                   QNR::NormalPriority,
+                                   QNR::LowPriority};
 
-    for (int i = 0; i < nQ; ++i) {
-        auto &queue = suspendedStreams[ranks[i]];
+    for (const QNR::Priority rank : ranks) {
+        auto &queue = suspendedStreams[rank];
         auto it = queue.begin();
         for (; it != queue.end(); ++it) {
             if (!activeStreams.contains(*it))
@@ -1367,9 +1366,7 @@ quint32 QHttp2ProtocolHandler::popStreamToResume()
 
 void QHttp2ProtocolHandler::removeFromSuspended(quint32 streamID)
 {
-    const int nQ = sizeof suspendedStreams / sizeof suspendedStreams[0];
-    for (int i = 0; i < nQ; ++i) {
-        auto &q = suspendedStreams[i];
+    for (auto &q : suspendedStreams) {
         q.erase(std::remove(q.begin(), q.end(), streamID), q.end());
     }
 }
diff --git a/src/platformsupport/edid/qedidparser.cpp b/src/platformsupport/edid/qedidparser.cpp
index 06c8852825..6bf1f1db96 100644
--- a/src/platformsupport/edid/qedidparser.cpp
+++ b/src/platformsupport/edid/qedidparser.cpp
@@ -42,8 +42,6 @@
 #include "qedidparser_p.h"
 #include "qedidvendortable_p.h"
 
-#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
-
 #define EDID_DESCRIPTOR_ALPHANUMERIC_STRING 0xfe
 #define EDID_DESCRIPTOR_PRODUCT_NAME 0xfc
 #define EDID_DESCRIPTOR_SERIAL_NUMBER 0xff
@@ -139,9 +137,9 @@ bool QEdidParser::parse(const QByteArray &blob)
     manufacturer = m_vendorCache.value(pnpIdString);
     if (manufacturer.isEmpty()) {
         // Find the manufacturer from the vendor lookup table
-        for (size_t i = 0; i < ARRAY_LENGTH(q_edidVendorTable); i++) {
-            if (strncmp(q_edidVendorTable[i].id, pnpId, 3) == 0) {
-                manufacturer = QString::fromUtf8(q_edidVendorTable[i].name);
+        for (const auto &vendor : q_edidVendorTable) {
+            if (strncmp(vendor.id, pnpId, 3) == 0) {
+                manufacturer = QString::fromUtf8(vendor.name);
                 break;
             }
         }