Clean up virtual, override, default, and void params. NFC.

Found by clang-tidy.

src/expr.h

@@ -45,7 +45,7 @@ public:
         Expr    *b;
     };
 
-    Expr() { }
+    Expr() = default;
     Expr(double val) : op(Op::CONSTANT) { v = val; }
 
     static inline Expr *AllocExpr()

src/group.cpp

@@ -49,7 +49,7 @@ bool Group::IsVisible() {
     return true;
 }
 
-size_t Group::GetNumConstraints(void) {
+size_t Group::GetNumConstraints() {
     return SK.constraint.CountIf([&](Constraint const & c) { return c.group == h; });
 }
 

src/platform/gui.h

@@ -107,7 +107,7 @@ void FatalError(std::string message);
 // A native settings store.
 class Settings {
 public:
-    virtual ~Settings() {}
+    virtual ~Settings() = default;
 
     virtual void FreezeInt(const std::string &key, uint32_t value) = 0;
     virtual uint32_t ThawInt(const std::string &key, uint32_t defaultValue = 0) = 0;
@@ -135,7 +135,7 @@ class Timer {
 public:
     std::function<void()>   onTimeout;
 
-    virtual ~Timer() {}
+    virtual ~Timer() = default;
 
     virtual void RunAfter(unsigned milliseconds) = 0;
     virtual void RunAfterNextFrame() { RunAfter(1); }
@@ -157,7 +157,7 @@ public:
 
     std::function<void()>   onTrigger;
 
-    virtual ~MenuItem() {}
+    virtual ~MenuItem() = default;
 
     virtual void SetAccelerator(KeyboardEvent accel) = 0;
     virtual void SetIndicator(Indicator type) = 0;
@@ -170,7 +170,7 @@ typedef std::shared_ptr<MenuItem> MenuItemRef;
 // A native menu.
 class Menu {
 public:
-    virtual ~Menu() {}
+    virtual ~Menu() = default;
 
     virtual std::shared_ptr<MenuItem> AddItem(
         const std::string &label, std::function<void()> onTrigger = std::function<void()>(),
@@ -188,7 +188,7 @@ typedef std::shared_ptr<Menu> MenuRef;
 // A native menu bar.
 class MenuBar {
 public:
-    virtual ~MenuBar() {}
+    virtual ~MenuBar() = default;
 
     virtual std::shared_ptr<Menu> AddSubMenu(const std::string &label) = 0;
 
@@ -222,7 +222,7 @@ public:
     std::function<void(double)>         onScrollbarAdjusted;
     std::function<void()>               onRender;
 
-    virtual ~Window() {}
+    virtual ~Window() = default;
 
     // Returns physical display DPI.
     virtual double GetPixelDensity() = 0;
@@ -299,7 +299,7 @@ public:
 
     std::function<void(Response)> onResponse;
 
-    virtual ~MessageDialog() {}
+    virtual ~MessageDialog() = default;
 
     virtual void SetType(Type type) = 0;
     virtual void SetTitle(std::string title) = 0;
@@ -347,7 +347,7 @@ extern std::vector<FileFilter> CsvFileFilters;
 // A native dialog that asks to choose a file.
 class FileDialog {
 public:
-    virtual ~FileDialog() {}
+    virtual ~FileDialog() = default;
 
     virtual void SetTitle(std::string title) = 0;
     virtual void SetCurrentName(std::string name) = 0;

src/platform/guigtk.cpp

@@ -124,7 +124,7 @@ public:
         }
     }
 
-    ~SettingsImplGtk() {
+    ~SettingsImplGtk() override {
         if(!_path.IsEmpty()) {
             // json-c <0.12 has the first argument non-const
             if(json_object_to_file_ext((char *)_path.raw.c_str(), _json,

src/platform/guinone.cpp

@@ -53,22 +53,24 @@ void FatalError(std::string message) {
 
 class SettingsImplDummy final : public Settings {
 public:
-    void FreezeInt(const std::string &key, uint32_t value) {}
+    void FreezeInt(const std::string &key, uint32_t value) override {
+    }
 
-    uint32_t ThawInt(const std::string &key, uint32_t defaultValue = 0) {
+    uint32_t ThawInt(const std::string &key, uint32_t defaultValue = 0) override {
         return defaultValue;
     }
 
-    void FreezeFloat(const std::string &key, double value) {}
+    void FreezeFloat(const std::string &key, double value) override {
+    }
 
-    double ThawFloat(const std::string &key, double defaultValue = 0.0) {
+    double ThawFloat(const std::string &key, double defaultValue = 0.0) override {
         return defaultValue;
     }
 
-    void FreezeString(const std::string &key, const std::string &value) {}
+    void FreezeString(const std::string &key, const std::string &value) override {
+    }
 
-    std::string ThawString(const std::string &key,
-                           const std::string &defaultValue = "") {
+    std::string ThawString(const std::string &key, const std::string &defaultValue = "") override {
         return defaultValue;
     }
 };

src/platform/utilunix.cpp

@@ -54,8 +54,7 @@ void *AllocTemporary(size_t n)
     return (void *)&h[1];
 }
 
-void FreeAllTemporary(void)
-{
+void FreeAllTemporary() {
     AllocTempHeader *h = Head;
     while(h) {
         AllocTempHeader *f = h;

src/render/rendergl3.cpp

@@ -727,8 +727,8 @@ public:
     // Data
     EdgeRenderer::Handle        handle;
 
-    virtual Canvas::Layer GetLayer() const override { return stroke.layer; };
-    virtual int GetZIndex() const override { return stroke.zIndex; };
+    Canvas::Layer GetLayer() const override { return stroke.layer; }
+    int GetZIndex() const override { return stroke.zIndex; }
 
     static std::shared_ptr<DrawCall> Create(OpenGl3Renderer *renderer, const SEdgeList &el,
                                             Canvas::Stroke *stroke) {
@@ -757,8 +757,8 @@ public:
     OutlineRenderer::Handle     handle;
     Canvas::DrawOutlinesAs      drawAs;
 
-    virtual Canvas::Layer GetLayer() const override { return stroke.layer; };
-    virtual int GetZIndex() const override { return stroke.zIndex; };
+    Canvas::Layer GetLayer() const override { return stroke.layer; }
+    int GetZIndex() const override { return stroke.zIndex; }
 
     static std::shared_ptr<DrawCall> Create(OpenGl3Renderer *renderer, const SOutlineList &ol,
                                             Canvas::Stroke *stroke,
@@ -788,8 +788,8 @@ public:
     // Data
     IndexedMeshRenderer::Handle  handle;
 
-    virtual Canvas::Layer GetLayer() const override { return stroke.layer; };
-    virtual int GetZIndex() const override { return stroke.zIndex; };
+    Canvas::Layer GetLayer() const override { return stroke.layer; }
+    int GetZIndex() const override { return stroke.zIndex; }
 
     static std::shared_ptr<DrawCall> Create(OpenGl3Renderer *renderer, const SIndexedMesh &mesh,
                                             Canvas::Stroke *stroke) {
@@ -817,8 +817,8 @@ public:
     // Data
     IndexedMeshRenderer::Handle  handle;
 
-    virtual Canvas::Layer GetLayer() const override { return fill.layer; };
-    virtual int GetZIndex() const override { return fill.zIndex; };
+    Canvas::Layer GetLayer() const override { return fill.layer; }
+    int GetZIndex() const override { return fill.zIndex; }
 
     static std::shared_ptr<DrawCall> Create(OpenGl3Renderer *renderer, const SIndexedMesh &mesh,
                                             Canvas::Fill *fill) {
@@ -856,8 +856,8 @@ public:
     bool                    hasFillBack;
     bool                    isShaded;
 
-    virtual Canvas::Layer GetLayer() const override { return fillFront.layer; };
-    virtual int GetZIndex() const override { return fillFront.zIndex; };
+    Canvas::Layer GetLayer() const override { return fillFront.layer; }
+    int GetZIndex() const override { return fillFront.zIndex; }
 
     static std::shared_ptr<DrawCall> Create(OpenGl3Renderer *renderer, const SMesh &m,
                                             Canvas::Fill *fillFront, Canvas::Fill *fillBack = NULL,