org.sonar.l10n.delphi.rules.community-delphi.NonLinearCast.html Maven / Gradle / Ivy

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There is a newer version: 1.12.1

Why is this an issue?
Casting an object to a type that is not guaranteed to have the same memory configuration can
cause access violations if used improperly.
How to fix it
Remove the improper cast by refactoring the code. If the intention is to provide additional
  methods to operate on an object, consider using a class helper instead.

type
  TAdditionalFunctionality = class(TObject)
  public
    procedure DebugPrint;
  end;

procedure DoStuff(MyObj: TSecretString);
begin
  TAdditionalFunctionality(MyObj).DebugPrint;
end;

type
  TAdditionalFunctionality = class helper for TSecretString
  public
    procedure DebugPrint;
  end;

procedure DoStuff(MyObj: TSecretString);
begin
  MyObj.DebugPrint;
end;

Resources

  
    
      RAD Studio documentation: Class and Record Helpers (Delphi)