DataMuseum.dk

Presents historical artifacts from the history of:

Rational R1000/400 Tapes

This is an automatic "excavation" of a thematic subset of
artifacts from Datamuseum.dk's BitArchive.

See our Wiki for more about Rational R1000/400 Tapes

Excavated with: AutoArchaeologist - Free & Open Source Software. 

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Index: B T

⟦5de32f5ef⟧ TextFile

    Length: 1246 (0x4de)
    Types: TextFile
    Names: »B«

Derivation

└─⟦2f6cfab89⟧ Bits:30000547 8mm tape, Rational 1000, !projects 94-01-04
    └─⟦d65440be7⟧ »DATA« 
        └─⟦this⟧

TextFile

with Object, Scanner, Unary, More_Binary, Message, Text_Io;
package body Binary is

    type Node_Structure is
        record
            Rule : Natural range 0 .. 1 := 0;
            Unar : Unary.Node := Unary.Empty_Node;
            More : More_Binary.Node := More_Binary.Empty_Node;
        end record;

    procedure Parse (N : in out Node; Error : out Boolean) is
        Failed : Boolean := False;
        use Scanner;  
    begin
        Text_Io.Put_Line ("I am in binary.parse");
        N := new Node_Structure;
        Unary.Parse (N.Unar, Failed);
        if not Failed and More_Binary.Is_First (Scanner.Get_Token) then
            N.Rule := 1;
            More_Binary.Parse (N => N.More, Error => Failed);
        end if;
        Error := Failed;
    end Parse;

    function Interpret (N : Node) return Object.Reference is
        Result : Object.Reference;
    begin  
        Text_Io.Put_Line ("I am in binary.interpret");
        case N.Rule is
            when 0 =>
                Result := Unary.Interpret (N.Unar);
            when 1 =>
                Result := Unary.Interpret (N.Unar);
                Result := More_Binary.Interpret (N.More, Result);
        end case;
        return Result;
    end Interpret;
end Binary;