separate (Compilation_Unit.Produce_Metrics)
procedure Last_Exception_Choice
             (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

    --========================================================
    -- Last_Exception_Choice ::=
    --      "WHEN" "OTHERS" "=>" Sequence_Of_Statements
    --========================================================

    Current_Token : Token_Package.Token;

begin
    -- Last_Exception_Choice

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

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

    -- increment Halstead WHEN operator count
    Halstead.Store_Operator ((Kind => Halstead_Operator.When_Halstead));

    -- increment McCabe PI
    Mccabe.Change_Pi;

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

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

    -- increment Halstead OTHERS operator count
    Halstead.Store_Operator ((Kind => Halstead_Operator.Others_Halstead));

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

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

    -- increment Halstead ARROW operator count
    Halstead.Store_Operator ((Kind => Halstead_Operator.Arrow_Halstead));

    Sequence_Of_Statements
       (Current_Compilation_Unit => Current_Compilation_Unit,
        Program_Unit => Program_Unit,
        Halstead => Halstead,
        Loc => Loc,
        Mccabe => Mccabe);

end Last_Exception_Choice;