separate (Compilation_Unit.Produce_Metrics)
procedure Component_Clause
             (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

    --==========================================================
    -- Component_Clause ::=
    --   Name "AT" Expression "RANGE" Expression ";"
    --==========================================================

    Current_Token : Token_Package.Token;
    Dummy_Name_Kind : Name_Kind;

begin
    -- Component_Clause


    Name (Current_Compilation_Unit => Current_Compilation_Unit,
          Program_Unit => Program_Unit,
          Halstead => Halstead,
          Loc => Loc,
          Mccabe => Mccabe,
          Out_Name_Kind => Dummy_Name_Kind);

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

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

    -- increment Halstead AT operator count
    Halstead.Store_Operator ((Kind => Halstead_Operator.At_Halstead));

    -- until "RANGE" is found
    Expression (Current_Compilation_Unit => Current_Compilation_Unit,
                Program_Unit => Program_Unit,
                Halstead => Halstead,
                Loc => Loc,
                Mccabe => Mccabe,
                Terminate_Tokens =>
                   Set_Of_Tokens'(1 => Token_Package.Range_Token));

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

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

    -- increment Halstead RANGE operator count
    Halstead.Store_Operator ((Kind => Halstead_Operator.Range_Halstead));

    -- until ";" is found
    Expression
       (Current_Compilation_Unit => Current_Compilation_Unit,
        Program_Unit => Program_Unit,
        Halstead => Halstead,
        Loc => Loc,
        Mccabe => Mccabe,
        Terminate_Tokens => Set_Of_Tokens'(1 => Token_Package.Semicolon_Token));

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

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

    -- increment Halstead SEMICOLON operator count
    Halstead.Store_Operator ((Kind => Halstead_Operator.Semicolon_Halstead));

end Component_Clause;