Don't use foreach, prefer range-based-for loops

Author: milianw

CMakeLists.txt

@@ -150,7 +150,7 @@ file(RELATIVE_PATH LIBEXEC_REL_PATH "${KDE_INSTALL_FULL_BINDIR}" "${KDE_INSTALL_
 
 configure_file(${CMAKE_CURRENT_SOURCE_DIR}/hotspot-config.h.cmake ${CMAKE_CURRENT_BINARY_DIR}/hotspot-config.h @ONLY)
 
-add_definitions(-DQT_NO_CAST_FROM_ASCII -DQT_NO_CAST_TO_ASCII -DQT_USE_QSTRINGBUILDER)
+add_definitions(-DQT_NO_CAST_FROM_ASCII -DQT_NO_CAST_TO_ASCII -DQT_USE_QSTRINGBUILDER -DQT_NO_FOREACH)
 add_compile_options(-Wall -pedantic -Wextra)
 if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
     add_compile_options(-Wno-gnu-zero-variadic-macro-arguments)

src/flamegraph.cpp

@@ -471,7 +471,7 @@ void layoutItems(FrameGraphicsItem* parent)
             < static_cast<const FrameGraphicsItem*>(rhs)->symbol();
     });
 
-    foreach (auto child, children) {
+    for (auto child : children) {
         auto frameChild = static_cast<FrameGraphicsItem*>(child);
         const qreal w = maxWidth * double(frameChild->cost()) / parent->cost();
         frameChild->setVisible(w > 1);
@@ -485,7 +485,7 @@ void layoutItems(FrameGraphicsItem* parent)
 
 FrameGraphicsItem* findItemBySymbol(const QList<QGraphicsItem*>& items, const Data::Symbol& symbol)
 {
-    foreach (auto item_, items) {
+    for (auto item_ : items) {
         auto item = static_cast<FrameGraphicsItem*>(item_);
         if (item->symbol() == symbol) {
             return item;
@@ -501,7 +501,7 @@ template<typename Tree>
 void toGraphicsItems(const Data::Costs& costs, int type, const QVector<Tree>& data, FrameGraphicsItem* parent,
                      const double costThreshold, const BrushConfig& brushConfig, bool collapseRecursion)
 {
-    foreach (const auto& row, data) {
+    for (const auto& row : data) {
         if (collapseRecursion && !row.symbol.symbol.isEmpty() && row.symbol == parent->symbol()) {
             if (costs.cost(type, row.id) > costThreshold) {
                 toGraphicsItems(costs, type, row.children, parent, costThreshold, brushConfig, collapseRecursion);
@@ -1178,7 +1178,8 @@ void FlameGraph::selectItem(FrameGraphicsItem* item)
         rect.setWidth(rootWidth);
         parent->setRect(rect);
         if (parent->parentItem()) {
-            foreach (auto sibling, parent->parentItem()->childItems()) {
+            const auto children = parent->parentItem()->childItems();
+            for (auto sibling : children) {
                 sibling->setVisible(sibling == parent);
             }
         }

src/frequencypage.cpp

@@ -6,11 +6,16 @@
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
+// NOTE: QCustomPlot still uses foreach
+#undef QT_NO_FOREACH
+#include <qcustomplot.h>
+#undef foreach
+#define QT_NO_FOREACH
+
 #include "frequencypage.h"
 
 #include <KColorScheme>
 #include <QDebug>
-#include <qcustomplot.h>
 
 #include "parsers/perf/perfparser.h"
 #include "ui_frequencypage.h"

src/models/processlist_unix.cpp

@@ -104,7 +104,8 @@ ProcDataList processList()
         return unixProcessListPS();
 
     ProcDataList rc;
-    foreach (const QString& procId, procDir.entryList()) {
+    const auto entries = procDir.entryList();
+    for (const QString& procId : entries) {
         if (!isUnixProcessId(procId))
             continue;
 

src/models/processmodel.cpp

@@ -37,7 +37,7 @@ void ProcessModel::mergeProcesses(const ProcDataList& processes)
     // iterator over m_data
     int i = 0;
 
-    foreach (const ProcData& newProc, sortedProcesses) {
+    for (const ProcData& newProc : sortedProcesses) {
         bool shouldInsert = true;
         while (i < m_data.count()) {
             const ProcData& oldProc = m_data.at(i);