DataMuseum.dk

top - download

    Length: 1732 (0x6c4)
    Types: TextFile
    Names: »B«

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

TextFile

with Object, Message, Argument, Scanner, Text_Io, Bounded_String;
package body More_Unary is

    type Node_Structure is
        record
            Rule : Natural range 0 .. 1 := 0;
            More : More_Unary.Node := Empty_Node;
            Mess : Message.Tiny_String;
        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_unary.parse");
        N := new Node_Structure;  
        N.Mess := Scanner.Get_Value;  
        Scanner.Next;
        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_Identifier;
    end Is_First;

    function Interpret (N : Node; Inherited : Object.Reference)
                       return Object.Reference is
        Result : Object.Reference;
    begin
        Text_Io.Put_Line ("I am in more_unary.interpret");
        Text_Io.Put ("Send the message ");
        Text_Io.Put (Bounded_String.Image (N.Mess));

        case N.Rule is
            when 0 =>  
                Text_Io.Put_Line (" in rule 0 to:");
                Object.En_Texte (Inherited);
                Result := Message.Send (Inherited, N.Mess);
            when 1 =>  
                Text_Io.Put_Line (" in rule 1 to:");  
                Object.En_Texte (Inherited);
                Result := Message.Send (Inherited, N.Mess);
                Result := Interpret (N.More, Result);
        end case;
        return (Result);
    end Interpret;
end More_Unary;