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    Types: TextFile
    Names: »B«

└─⟦afbc8121e⟧ Bits:30000532 8mm tape, Rational 1000, MC68020_OS2000 7_2_2
    └─⟦77aa8350c⟧ »DATA« 
        └─⟦f794ecd1d⟧ 
            └─⟦24d1ddd49⟧ 
                └─⟦this⟧ 

TextFile

--    The use of this system is subject to the software license terms and
--    conditions agreed upon between Rational and the Customer.
--
--                Copyright 1988 by Rational.
--
--                          RESTRICTED RIGHTS LEGEND
--
--    Use, duplication, or disclosure by the Government is subject to
--    restrictions as set forth in subdivision (b)(3)(ii) of the Rights in
--    Technical Data and Computer Software clause at 52.227-7013.
--
--
--                Rational
--                3320 Scott Boulevard
--                Santa Clara, California 95054-3197
--
--   PROPRIETARY AND CONFIDENTIAL INFORMATION OF RATIONAL;
--   USE OR COPYING WITHOUT EXPRESS WRITTEN AUTHORIZATION
--   IS STRICTLY PROHIBITED.  THIS MATERIAL IS PROTECTED AS
--   AN UNPUBLISHED WORK UNDER THE U.S. COPYRIGHT ACT OF
--   1976.  CREATED 1988.  ALL RIGHTS RESERVED.
--
--

package body Enum_Rep_Attr is

    pragma Suppress (Index_Check);
    pragma Suppress (Range_Check);
    pragma Suppress (Access_Check);
    pragma Suppress (Storage_Check);

    function Lookup (Table : Attribute_Definitions.Enum_Rep_Table;
                     Value : Integer) return Integer is
        pragma Routine_Number (Runtime_Ids.Internal);

        Binary_Lookup_Threshold : constant := 14;

        function Linear_Lookup return Integer is
            pragma Routine_Number (Runtime_Ids.Internal);
        begin
            for I in 0 .. Table.N_Items loop
                if Value = Table.Value (I) then
                    return I;
                end if;
            end loop;
            return -1;
        end Linear_Lookup;

        -- Ordering of the Enum_Rep_Table is guaranteed by Ada semantics.
        function Binary_Lookup return Integer is
            pragma Routine_Number (Runtime_Ids.Internal);
            Low  : Integer := 0;
            Mid  : Integer;
            High : Integer := Table.N_Items;
        begin
            while Low <= High loop
                Mid := (Low + High) / 2;
                if Value = Table.Value (Mid) then
                    return Mid;
                elsif Value > Table.Value (Mid) then
                    Low := Mid + 1;
                else
                    High := Mid - 1;
                end if;
            end loop;
            return -1;
        end Binary_Lookup;

        -- pragma Inline (Linear_Lookup, Binary_Lookup);

    begin
        if Table.N_Items < Binary_Lookup_Threshold then
            return Linear_Lookup;
        else
            return Binary_Lookup;
        end if;
    end Lookup;

    function Enum_Succ (Table : Attribute_Definitions.Enum_Rep_Table;  
                        Value : Integer) return Integer is
        pragma Routine_Number (Runtime_Ids.Enum_Succ);
        Pos : constant Integer := Lookup (Table, Value);
    begin
        if Pos < 0 or Pos = Table.N_Items then
            raise Constraint_Error;
        else
            return Table.Value (Pos + 1);
        end if;
    end Enum_Succ;

    function Enum_Pred (Table : Attribute_Definitions.Enum_Rep_Table;  
                        Value : Integer) return Integer is
        pragma Routine_Number (Runtime_Ids.Enum_Pred);
        Pos : constant Integer := Lookup (Table, Value);
    begin
        if Pos < 1 then
            raise Constraint_Error;
        else
            return Table.Value (Pos - 1);
        end if;
    end Enum_Pred;

    function Enum_Pos (Table : Attribute_Definitions.Enum_Rep_Table;  
                       Value : Integer) return Natural is
        pragma Routine_Number (Runtime_Ids.Enum_Pos);
        I : constant Integer := Lookup (Table, Value);
    begin
        if I >= 0 then
            return I;
        else
            raise Constraint_Error;
        end if;
    end Enum_Pos;

end Enum_Rep_Attr;
pragma Export_Elaboration_Procedure ("__ENUM_REP_ATTR_SPEC_ELAB");
pragma Runtime_Unit (Unit_Number         => Runtime_Ids.Runtime_Compunit,
                     Elab_Routine_Number => Runtime_Ids.Internal);