separate (Compilation_Unit.Produce_Metrics)
procedure Private_Type_Definition
             (Current_Compilation_Unit : in out Ada_Compilation_Unit;
              Program_Unit : in Program_Unit_State_Machine;
              Halstead : in Halstead_State_Machine;
              Loc : in Loc_State_Machine;
              Mccabe : in Mccabe_State_Machine) is

    --==========================================================
    -- Private_Type_Definition ::= [ "LIMITED" ] "PRIVATE"
    --==========================================================

    Current_Token : Token_Package.Token;

begin
    -- Private_Type_Definition

    Get_Next_Token (Out_Token => Current_Token,
                    From => Current_Compilation_Unit,
                    Current_Loc => Loc);

    case Token_Package.Value_Of (Current_Token) is

        when Token_Package.Limited_Token =>

            -- increment Halstead LIMITED_PRIVATE operator count
            Halstead.Store_Operator
               ((Kind => Halstead_Operator.Limited_Private_Halstead));

            Get_Next_Token (Out_Token => Current_Token,
                            From => Current_Compilation_Unit,
                            Current_Loc => Loc);

            if "/=" (Token_Package.Value_Of (Current_Token),
                     Token_Package.Private_Token) then
                raise Syntax_Error;
            end if;

        when Token_Package.Private_Token =>

            -- increment Halstead PRIVATE operator count
            Halstead.Store_Operator ((Kind =>
                                         Halstead_Operator.Private_Halstead));

        when others =>
            raise Syntax_Error;

    end case;

end Private_Type_Definition;