DataMuseum.dk

Presents historical artifacts from the history of:

Rational R1000/400 Tapes

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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 ┃

⟦fb6c0d501⟧ TextFile

    Length: 1890 (0x762)
    Types: TextFile
    Names: »B«

Derivation

└─⟦a7d1ea751⟧ Bits:30000550 8mm tape, Rational 1000, !users!projects 94_04_11
    └─ ⟦129cab021⟧ »DATA« 
        └─⟦this⟧

TextFile

with Lex;
with Object;
with Bounded_String;
with Unparser;
package body More_Unary is
    type Node_Structure is
        record
            Rule : Natural range 0 .. 1 := 0;
            More : More_Unary.Node := More_Unary.Empty_Node;
            Mess : Object.Message;
        end record;

    procedure Parse (N : in out Node; Error : out Boolean) is
        Failed : Boolean := False;

    begin  
        N := new Node_Structure;

        case Lex.Get_Token is

            when Lex.Identifier =>

                Bounded_String.Copy (N.Mess, Lex.Get_Value);
                Lex.Next_Token;
                if not Failed and Lex.Token'Pos (Lex.Get_Token) =
                                     Lex.Token'Pos (Lex.Identifier) then
                    N.Rule := 1;
                    More_Unary.Parse (N.More, Failed);
                end if;
            when others =>
                null;
        end case;
        Error := Failed;
    end Parse;  
    procedure Unparse (N : in out Node) is
    begin
        case N.Rule is
            when 0 =>
                Unparser.Put (" ");
                Unparser.Put (Bounded_String.Image (N.Mess));

            when 1 =>  
                Unparser.Put (" ");
                Unparser.Put (Bounded_String.Image (N.Mess));
                More_Unary.Unparse (N.More);

        end case;
    end Unparse;
    function Interpret (N : Node;
                        Inherited : Object.Reference := Object.Void_Reference)
                       return Object.Reference is
        Result : Object.Reference;
    begin
        case N.Rule is
            when 0 =>
                Result := Object.Send (Inherited, N.Mess);
            when 1 =>
                Result := Object.Send (Inherited, N.Mess);
                Result := More_Unary.Interpret (N.More, Result);
        end case;
        return Result;

    end Interpret;
end More_Unary;