Command validator cloners return smart pointers, and...

... defined DefaultValidator so Validator can be abstract, as the comment for
Clone() stongly implies it should be.

But this is virtual is unused except in comments.

src/commands/BatchEvalCommand.cpp

@@ -22,11 +22,11 @@ wxString BatchEvalCommandType::BuildName()
 
 void BatchEvalCommandType::BuildSignature(CommandSignature &signature)
 {
-   Validator *commandNameValidator(new Validator());
+   Validator *commandNameValidator(new DefaultValidator());
    signature.AddParameter(wxT("CommandName"), wxT(""), commandNameValidator);
-   Validator *paramValidator(new Validator());
+   Validator *paramValidator(new DefaultValidator());
    signature.AddParameter(wxT("ParamString"), wxT(""), paramValidator);
-   Validator *chainValidator(new Validator());
+   Validator *chainValidator(new DefaultValidator());
    signature.AddParameter(wxT("ChainName"), wxT(""), chainValidator);
 }
 

src/commands/ExecMenuCommand.cpp

@@ -24,7 +24,7 @@ wxString ExecMenuCommandType::BuildName()
 
 void ExecMenuCommandType::BuildSignature(CommandSignature &signature)
 {
-   Validator *menuCommandValidator(new Validator());
+   Validator *menuCommandValidator(new DefaultValidator());
    signature.AddParameter(wxT("CommandName"), wxT(""), menuCommandValidator);
 }
 

src/commands/HelpCommand.cpp

@@ -24,7 +24,7 @@ wxString HelpCommandType::BuildName()
 
 void HelpCommandType::BuildSignature(CommandSignature &signature)
 {
-   Validator *commandNameValidator = new Validator();
+   Validator *commandNameValidator = new DefaultValidator();
    signature.AddParameter(wxT("CommandName"), wxT(""), commandNameValidator);
 }
 

src/commands/ImportExportCommands.cpp

@@ -27,7 +27,7 @@ wxString ImportCommandType::BuildName()
 
 void ImportCommandType::BuildSignature(CommandSignature &signature)
 {
-   Validator *filenameValidator(new Validator());
+   Validator *filenameValidator(new DefaultValidator());
    signature.AddParameter(wxT("Filename"), wxT(""), filenameValidator);
 }
 
@@ -59,7 +59,7 @@ void ExportCommandType::BuildSignature(CommandSignature &signature)
    modeValidator->AddOption(wxT("Selection"));
    signature.AddParameter(wxT("Mode"), wxT("All"), modeValidator);
 
-   Validator *filenameValidator(new Validator());
+   Validator *filenameValidator(new DefaultValidator());
    signature.AddParameter(wxT("Filename"), wxT("exported.wav"), filenameValidator);
 
    IntValidator *channelsValidator(new IntValidator());

src/commands/MessageCommand.cpp

@@ -23,7 +23,7 @@ wxString MessageCommandType::BuildName()
 
 void MessageCommandType::BuildSignature(CommandSignature &signature)
 {
-   Validator *stringValidator = new Validator();
+   Validator *stringValidator = new DefaultValidator();
    signature.AddParameter(wxT("MessageString"), wxT(""), stringValidator);
 }
 

src/commands/OpenSaveCommands.cpp

@@ -28,7 +28,7 @@ void OpenProjectCommandType::BuildSignature(CommandSignature &signature)
 {
    BoolValidator *addToHistoryValidator(new BoolValidator());
    signature.AddParameter(wxT("AddToHistory"), true, addToHistoryValidator);
-   Validator *filenameValidator(new Validator());
+   Validator *filenameValidator(new DefaultValidator());
    signature.AddParameter(wxT("Filename"), wxT(""), filenameValidator);
 }
 
@@ -76,7 +76,7 @@ void SaveProjectCommandType::BuildSignature(CommandSignature &signature)
    signature.AddParameter(wxT("Compress"), false, saveCompressedValidator);
    signature.AddParameter(wxT("AddToHistory"), true, addToHistoryValidator);
 
-   Validator *filenameValidator(new Validator());
+   Validator *filenameValidator(new DefaultValidator());
    signature.AddParameter(wxT("Filename"), wxT(""), filenameValidator);
 }
 

src/commands/PreferenceCommands.cpp

@@ -26,7 +26,7 @@ wxString GetPreferenceCommandType::BuildName()
 
 void GetPreferenceCommandType::BuildSignature(CommandSignature &signature)
 {
-   Validator *prefNameValidator(new Validator());
+   Validator *prefNameValidator(new DefaultValidator());
    signature.AddParameter(wxT("PrefName"), wxT(""), prefNameValidator);
 }
 
@@ -59,9 +59,9 @@ wxString SetPreferenceCommandType::BuildName()
 
 void SetPreferenceCommandType::BuildSignature(CommandSignature &signature)
 {
-   Validator *prefNameValidator(new Validator());
+   Validator *prefNameValidator(new DefaultValidator());
    signature.AddParameter(wxT("PrefName"), wxT(""), prefNameValidator);
-   Validator *prefValueValidator(new Validator());
+   Validator *prefValueValidator(new DefaultValidator());
    signature.AddParameter(wxT("PrefValue"), wxT(""), prefValueValidator);
 }
 

src/commands/ScreenshotCommand.cpp

@@ -295,7 +295,7 @@ void ScreenshotCommandType::BuildSignature(CommandSignature &signature)
    backgroundValidator->AddOption(wxT("White"));
    backgroundValidator->AddOption(wxT("None"));
 
-   Validator *filePathValidator = new Validator();
+   Validator *filePathValidator = new DefaultValidator();
 
    signature.AddParameter(wxT("CaptureMode"),
                           wxT("fullscreen"),

src/commands/SelectCommand.cpp

@@ -45,7 +45,7 @@ void SelectCommandType::BuildSignature(CommandSignature &signature)
    IntValidator *lastTrackValidator = new IntValidator();
    signature.AddParameter(wxT("LastTrack"), 0, lastTrackValidator);
 
-   Validator *trackNameValidator = new Validator();
+   Validator *trackNameValidator = new DefaultValidator();
    signature.AddParameter(wxT("TrackName"), 0, trackNameValidator);
 }
 

src/commands/SetTrackInfoCommand.cpp

@@ -33,7 +33,7 @@ void SetTrackInfoCommandType::BuildSignature(CommandSignature &signature)
    OptionValidator *infoTypeValidator = new OptionValidator();
    infoTypeValidator->AddOption(wxT("Name"));
    signature.AddParameter(wxT("Type"), wxT("Name"), infoTypeValidator);
-   Validator *nameValidator = new Validator();
+   Validator *nameValidator = new DefaultValidator();
    signature.AddParameter(wxT("Name"), wxT("Unnamed"), nameValidator);
 }
 

src/commands/Validators.h

@@ -43,6 +43,8 @@ a certain criterion. This is a base validator which allows anything.
 #ifndef __VALIDATORS__
 #define __VALIDATORS__
 
+#include "../MemoryX.h"
+
 class Validator /* not final */
 {
 private:
@@ -75,9 +77,16 @@ public:
    }
 
    /// This MUST be overridden, to avoid slicing!
-   virtual Validator *GetClone() const
+   using Holder = std::unique_ptr<Validator>;
+   virtual Holder GetClone() const = 0;
+};
+
+class DefaultValidator final : public Validator
+{
+public:
+   virtual Holder GetClone() const
    {
-      return new Validator();
+      return std::make_unique<DefaultValidator>(*this);
    }
 };
 
@@ -112,11 +121,11 @@ public:
       desc += mOptions[optionCount-1];
       return desc;
    }
-   Validator *GetClone() const override
+   Holder GetClone() const override
    {
-      OptionValidator *v = new OptionValidator();
+      auto v = std::make_unique<OptionValidator>();
       v->mOptions = mOptions;
-      return v;
+      return std::move(v);
    }
 };
 
@@ -134,9 +143,9 @@ public:
    {
       return wxT("true/false or 1/0 or yes/no");
    }
-   Validator *GetClone() const override
+   Holder GetClone() const override
    {
-      return new BoolValidator();
+      return std::make_unique<BoolValidator>();
    }
 };
 
@@ -158,9 +167,9 @@ public:
    {
       return wxT("0X101XX101...etc.  where 0=false, 1=true, and X=don't care.  Numbering starts at leftmost = track 0");
    }
-   Validator *GetClone() const override
+   Holder GetClone() const override
    {
-      return new BoolArrayValidator();
+      return std::make_unique<BoolArrayValidator>();
    }
 };
 
@@ -178,9 +187,9 @@ public:
    {
       return wxT("a floating-point number");
    }
-   Validator *GetClone() const override
+   Holder GetClone() const override
    {
-      return new DoubleValidator();
+      return std::make_unique<DoubleValidator>();
    }
 };
 
@@ -203,9 +212,9 @@ public:
    {
       return wxString::Format(wxT("between %f and %f"), mLower, mUpper);
    }
-   Validator *GetClone() const override
+   Holder GetClone() const override
    {
-      return new RangeValidator(mLower, mUpper);
+      return std::make_unique<RangeValidator>(mLower, mUpper);
    }
 };
 
@@ -224,9 +233,9 @@ public:
    {
       return wxT("an integer");
    }
-   Validator *GetClone() const override
+   Holder GetClone() const override
    {
-      return new IntValidator();
+      return std::make_unique<IntValidator>();
    }
 };
 
@@ -234,23 +243,22 @@ public:
 class AndValidator final : public Validator
 {
 private:
-   Validator &v1, &v2;
+   Validator::Holder v1, v2;
 public:
-   AndValidator(Validator *u1, Validator *u2)
-      : v1(*u1), v2(*u2)
+   AndValidator(Validator::Holder &&u1, Validator::Holder &&u2)
+      : v1(std::move(u1)), v2(std::move(u2))
    { }
    bool Validate(const wxVariant &v) override
    {
-      if (!v1.Validate(v)) return false;
-      return v2.Validate(v);
+      return v1->Validate(v) && v2->Validate(v);
    }
    wxString GetDescription() const override
    {
-      return v1.GetDescription() + wxT(" and ") + v2.GetDescription();
+      return v1->GetDescription() + wxT(" and ") + v2->GetDescription();
    }
    Validator *GetClone() const override
    {
-      return new AndValidator(v1.GetClone(), v2.GetClone());
+      return std::make_unique<AndValidator>(v1->GetClone(), v2->GetClone());
    }
 };*/