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    Length: 1716 (0x6b4)
    Types: TextFile
    Names: »B«

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

TextFile

with Object;
with Message;
with Binary;
with Class_Printer;
with Bounded_String;

package body More_Value is

    type Node_Structure is
        record
            Rule : Natural range 0 .. 1 := 0;
            Bin : Binary.Node := Binary.Empty_Node;
            More : More_Value.Node := More_Value.Empty_Node;
            Mess : Message.Unary;
            Line : Object.Index := Scanner.Get_Line_Number;
        end record;

    procedure Parse (N : in out Node; Mess : in out Message.Keyword) is
        use Scanner;
    begin  
        N := new Node_Structure;
        N.Rule := 0;
        Message.Put (Scanner.Get_Value, Mess);
        Message.Put (Scanner.Get_Value, N.Mess);
        Scanner.Next;
        Binary.Parse (N.Bin);
        if Scanner.Get_Token = Scanner.Keyword then
            N.Rule := 1;
            More_Value.Parse (N.More, Mess);
        end if;  
    end Parse;

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

    procedure Unparse (N : Node) is
    begin
        Class_Printer.Put
           (" " & Bounded_String.Image (Message.Get (Name_From => N.Mess)) &
            ": ");
        Binary.Unparse (N.Bin);
        if N.Rule = 1 then
            More_Value.Unparse (N.More);
        end if;
    end Unparse;

    procedure Interpret (N : Node; Mess : in out Message.Keyword) is
        Result : Object.Reference;
    begin
        Scanner.Put_Line_Number (N.Line);
        Result := Binary.Interpret (N.Bin);
        Message.Put (This_Argument => Result, Into => Mess);
        if N.Rule = 1 then
            More_Value.Interpret (N.More, Mess);
        end if;
    end Interpret;
end More_Value;