Suspicious switch statement Usage (SSU)

Description:

SSU detects if a method contains a case of on a field of the containing class. A field must be of an integral type; it may be accessed either directly or via an accessor method. Such case of statements should often be replaced with the usage of several subclasses.

Incorrect:

Node = class
    private
      var kind:integer;
    
    public
      procedure print();
end;
...
procedure Node.print();
begin
  case kind of 
    OP_ADD:
      ...
    OP_SUB:
      ...
  end;
end;

Correct:

Node = class abstract
    public
      procedure print();virtual;abstract;
end;

AddNode = class(Node)
    public
      procedure print();override;
end;

SubNode = class(Node)
    public
      procedure print();override;
end;

Refactoring:

• Replace Conditional with Polymorphism