DataMuseum.dk

top - download

    Length: 1662 (0x67e)
    Types: TextFile
    Names: »B«

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

TextFile

with Text_Io;
with Lex;
with Object;
with Binary;
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 : 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.Key_Word =>
                Bounded_String.Copy (N.Mess, Lex.Get_Value);
                Lex.Next_Token;
                Binary.Parse (N.Bin, Failed);
                if not Failed and Lex.Token'Pos (Lex.Get_Token) =
                                     Lex.Token'Pos (Lex.Key_Word) then  
                    N.Rule := 1;
                    More_Value.Parse (N.More, Failed);
                end if;

            when others =>
                null;
        end case;
        Error := Failed;
    end Parse;

    function Is_First (T : Lex.Token) return Boolean is
        use Lex;
    begin
        return T = Lex.Key_Word;
    end Is_First;
    procedure Interpret (N : Node; Inherited : in out Object.Parameters.List) is

    begin
        case N.Rule is
            when 0 =>
                Object.Parameters.Add
                   (N.Mess, Binary.Interpret (N.Bin), Inherited);
            when 1 =>
                Interpret (N.More, Inherited);
                Object.Parameters.Add
                   (N.Mess, Binary.Interpret (N.Bin), Inherited);

        end case;

    end Interpret;
end More_Value;