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    Length: 1828 (0x724)
    Types: TextFile
    Names: »B«

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

TextFile

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

    type Node_Structure is
        record
            Rule : Natural range 0 .. 1 := 0;
            Unar : Unary.Node := Unary.Empty_Node;
            More : More_Binary.Node := Empty_Node;
            Mess : Message.Selector;
        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 more_binary.parse");
        N := new Node_Structure;
        N.Mess := Scanner.Get_Value;
        Scanner.Next;
        Unary.Parse (N.Unar, Failed);
        if not Failed and Is_First (Scanner.Get_Token) then
            N.Rule := 1;
            Parse (N.More, Failed);
        end if;
        Error := Failed;
    end Parse;

    function Is_First (T : Scanner.Token) return Boolean is
        use Scanner;
    begin
        return T = T_Binary_Message;
    end Is_First;

    function Interpret (N : Node; Inherited : Object.Reference)
                       return Object.Reference is
        Result : Object.Reference;
        Args : Argument.List;
    begin  
        Text_Io.Put_Line ("I am in more_binary.interpret");
        Argument.Init (L => Args);
        case N.Rule is
            when 0 =>
                Result := Unary.Interpret (N.Unar);
                Args := Argument.Put (L => Args, Obj => Result);
                Result := Message.Send (Inherited, N.Mess, Args);
            when 1 =>
                Result := Unary.Interpret (N.Unar);
                Args := Argument.Put (L => Args, Obj => Result);
                Result := Message.Send (Inherited, N.Mess, Args);
                Result := Interpret (N.More, Result);
        end case;
        return (Result);
    end Interpret;
end More_Binary;