CppTools: Consistently use nullptr

Fixed by clang-tidy modernize-use-nullptr.

Change-Id: I951627ba3543faa357f67ee76527518290efe3f1
Reviewed-by: Ivan Donchevskii <ivan.donchevskii@qt.io>

src/plugins/cpptools/abstracteditorsupport.h

@@ -37,7 +37,7 @@ class CPPTOOLS_EXPORT AbstractEditorSupport : public QObject
 {
     Q_OBJECT
 public:
-    explicit AbstractEditorSupport(CppModelManager *modelmanager, QObject *parent = 0);
+    explicit AbstractEditorSupport(CppModelManager *modelmanager, QObject *parent = nullptr);
     ~AbstractEditorSupport() override;
 
     /// \returns the contents, encoded as UTF-8

src/plugins/cpptools/clangdiagnosticconfigswidget.h

@@ -57,7 +57,7 @@ public:
     explicit ClangDiagnosticConfigsWidget(
             const ClangDiagnosticConfigsModel &diagnosticConfigsModel = ClangDiagnosticConfigsModel(),
             const Core::Id &configToSelect = Core::Id(),
-            QWidget *parent = 0);
+            QWidget *parent = nullptr);
     ~ClangDiagnosticConfigsWidget() override;
 
     Core::Id currentConfigId() const;

src/plugins/cpptools/cppchecksymbols.h

@@ -118,7 +118,7 @@ protected:
     bool maybeFunction(const CPlusPlus::Name *name) const;
 
     void checkNamespace(CPlusPlus::NameAST *name);
-    void checkName(CPlusPlus::NameAST *ast, CPlusPlus::Scope *scope = 0);
+    void checkName(CPlusPlus::NameAST *ast, CPlusPlus::Scope *scope = nullptr);
     CPlusPlus::ClassOrNamespace *checkNestedName(CPlusPlus::QualifiedNameAST *ast);
 
     void addUse(const Result &use);

src/plugins/cpptools/cppcodeformatter.h

@@ -217,7 +217,7 @@ private:
 
     QStringRef currentTokenText() const;
 
-    int tokenizeBlock(const QTextBlock &block, bool *endedJoined = 0);
+    int tokenizeBlock(const QTextBlock &block, bool *endedJoined = nullptr);
 
     void turnInto(int newState);
 

src/plugins/cpptools/cppcodestylepreferences.h

@@ -37,7 +37,7 @@ class CPPTOOLS_EXPORT CppCodeStylePreferences : public TextEditor::ICodeStylePre
     Q_OBJECT
 public:
     explicit CppCodeStylePreferences(
-        QObject *parent = 0);
+        QObject *parent = nullptr);
 
     QVariant value() const override;
     void setValue(const QVariant &) override;

src/plugins/cpptools/cppcompletionassistprovider.h

@@ -48,7 +48,7 @@ class CPPTOOLS_EXPORT CppCompletionAssistProvider : public TextEditor::Completio
     Q_OBJECT
 
 public:
-    CppCompletionAssistProvider(QObject *parent = 0);
+    CppCompletionAssistProvider(QObject *parent = nullptr);
     int activationCharSequenceLength() const override;
     bool isActivationCharSequence(const QString &sequence) const override;
     bool isContinuationChar(const QChar &c) const override;

src/plugins/cpptools/cppindexingsupport.h

@@ -67,7 +67,7 @@ public:
 
 
 public:
-    SymbolSearcher(QObject *parent = 0);
+    SymbolSearcher(QObject *parent = nullptr);
     ~SymbolSearcher() override = 0;
     virtual void runSearch(QFutureInterface<Core::SearchResultItem> &future) = 0;
 };

src/plugins/cpptools/cppselectionchanger.h

@@ -42,7 +42,7 @@ public:
     ASTNodePositions(CPlusPlus::AST *_ast) : ast(_ast) {}
     operator bool() const { return ast; }
 
-    CPlusPlus::AST *ast = 0;
+    CPlusPlus::AST *ast = nullptr;
     unsigned firstTokenIndex = 0;
     unsigned lastTokenIndex = 0;
     unsigned secondToLastTokenIndex = 0;
@@ -54,7 +54,7 @@ class CPPTOOLS_EXPORT CppSelectionChanger : public QObject
 {
     Q_OBJECT
 public:
-    explicit CppSelectionChanger(QObject *parent = 0);
+    explicit CppSelectionChanger(QObject *parent = nullptr);
 
     enum Direction {
         ExpandSelection,

src/plugins/cpptools/cpptoolsreuse.h

@@ -68,7 +68,7 @@ const CPlusPlus::Macro CPPTOOLS_EXPORT *findCanonicalMacro(const QTextCursor &cu
 
 enum class CacheUsage { ReadWrite, ReadOnly };
 
-QString CPPTOOLS_EXPORT correspondingHeaderOrSource(const QString &fileName, bool *wasHeader = 0,
+QString CPPTOOLS_EXPORT correspondingHeaderOrSource(const QString &fileName, bool *wasHeader = nullptr,
                                                     CacheUsage cacheUsage = CacheUsage::ReadWrite);
 void CPPTOOLS_EXPORT switchHeaderSource();
 

src/plugins/cpptools/functionutils.h

@@ -46,11 +46,11 @@ class CPPTOOLS_EXPORT FunctionUtils
 public:
     static bool isVirtualFunction(const CPlusPlus::Function *function,
                                   const CPlusPlus::LookupContext &context,
-                                  const CPlusPlus::Function **firstVirtual = 0);
+                                  const CPlusPlus::Function **firstVirtual = nullptr);
 
     static bool isPureVirtualFunction(const CPlusPlus::Function *function,
                                       const CPlusPlus::LookupContext &context,
-                                      const CPlusPlus::Function **firstVirtual = 0);
+                                      const CPlusPlus::Function **firstVirtual = nullptr);
 
     static QList<CPlusPlus::Function *> overrides(CPlusPlus::Function *function,
                                                   CPlusPlus::Class *functionsClass,

src/plugins/cpptools/includeutils.h

@@ -90,8 +90,8 @@ public:
 
     /// Returns the line (1-based) at which the include directive should be inserted.
     /// On error, -1 is returned.
-    int operator()(const QString &newIncludeFileName, unsigned *newLinesToPrepend = 0,
+    int operator()(const QString &newIncludeFileName, unsigned *newLinesToPrepend = nullptr,
-                   unsigned *newLinesToAppend = 0);
+                   unsigned *newLinesToAppend = nullptr);
 
 private:
     int findInsertLineForVeryFirstInclude(unsigned *newLinesToPrepend, unsigned *newLinesToAppend);

src/plugins/cpptools/modelmanagertesthelper.h

@@ -55,7 +55,7 @@ class CPPTOOLS_EXPORT ModelManagerTestHelper: public QObject
 public:
     typedef ProjectExplorer::Project Project;
 
-    explicit ModelManagerTestHelper(QObject *parent = 0,
+    explicit ModelManagerTestHelper(QObject *parent = nullptr,
                                     bool testOnlyForCleanedProjects = true);
     ~ModelManagerTestHelper() override;