Tidy nullptr usage

Move away from using 0 as pointer literal.

Done using clang-tidy. This is not complete as
run-clang-tidy can't handle all of qtbase in one go.

Change-Id: I1076a21f32aac0dab078af6f175f7508145eece0
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@qt.io>
Reviewed-by: Lars Knoll <lars.knoll@qt.io>

1 files changed, 9 insertions, 9 deletions

diff --git a/src/widgets/util/qundostack.cpp b/src/widgets/util/qundostack.cpp
index 8788c42252..f188b8298a 100644
--- a/src/widgets/util/qundostack.cpp
+++ b/src/widgets/util/qundostack.cpp
@@ -128,7 +128,7 @@ QUndoCommand::QUndoCommand(const QString &text, QUndoCommand *parent)
 QUndoCommand::QUndoCommand(QUndoCommand *parent)
 {
     d = new QUndoCommandPrivate;
-    if (parent != 0)
+    if (parent != nullptr)
         parent->d->child_list.append(this);
 }
 
@@ -336,7 +336,7 @@ int QUndoCommand::childCount() const
 const QUndoCommand *QUndoCommand::child(int index) const
 {
     if (index < 0 || index >= d->child_list.count())
-        return 0;
+        return nullptr;
     return d->child_list.at(index);
 }
 
@@ -559,7 +559,7 @@ QUndoStack::~QUndoStack()
 {
 #if QT_CONFIG(undogroup)
     Q_D(QUndoStack);
-    if (d->group != 0)
+    if (d->group != nullptr)
         d->group->removeStack(this);
 #endif
     clear();
@@ -640,7 +640,7 @@ void QUndoStack::push(QUndoCommand *cmd)
 
     bool macro = !d->macro_stack.isEmpty();
 
-    QUndoCommand *cur = 0;
+    QUndoCommand *cur = nullptr;
     if (macro) {
         QUndoCommand *macro_cmd = d->macro_stack.constLast();
         if (!macro_cmd->d->child_list.isEmpty())
@@ -654,7 +654,7 @@ void QUndoStack::push(QUndoCommand *cmd)
             d->clean_index = -1; // we've deleted the clean state
     }
 
-    bool try_merge = cur != 0
+    bool try_merge = cur != nullptr
                         && cur->id() != -1
                         && cur->id() == cmd->id()
                         && (macro || d->index != d->clean_index);
@@ -1225,7 +1225,7 @@ const QUndoCommand *QUndoStack::command(int index) const
     Q_D(const QUndoStack);
 
     if (index < 0 || index >= d->command_list.count())
-        return 0;
+        return nullptr;
     return d->command_list.at(index);
 }
 
@@ -1305,11 +1305,11 @@ void QUndoStack::setActive(bool active)
 #else
     Q_D(QUndoStack);
 
-    if (d->group != 0) {
+    if (d->group != nullptr) {
         if (active)
             d->group->setActiveStack(this);
         else if (d->group->activeStack() == this)
-            d->group->setActiveStack(0);
+            d->group->setActiveStack(nullptr);
     }
 #endif
 }
@@ -1320,7 +1320,7 @@ bool QUndoStack::isActive() const
     return true;
 #else
     Q_D(const QUndoStack);
-    return d->group == 0 || d->group->activeStack() == this;
+    return d->group == nullptr || d->group->activeStack() == this;
 #endif
 }