DataMuseum.dk

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    Length: 2148 (0x864)
    Types: TextFile
    Names: »B«

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

TextFile

with Binary;
with Errors;
with Object;
with Trace;
with Unparser;

package body More_Value is

    type Node_Structure is
        record
            Line : Natural;
            Rule : Natural range 0 .. 1 := 0;
            Keyw : Scanner.Lexeme;
            Bin : Binary.Node := Binary.Empty_Node;
            More : Node := Empty_Node;
        end record;

    procedure Parse (N : in out Node) is
    begin
        Trace.Display ("parsing More_Value");
        N := new Node_Structure;
        N.Line := Scanner.Get_Line_Number;
        case Scanner.Get_Token is
            when Scanner.L_Keyw =>
                N.Rule := 1;
                N.Keyw := Scanner.Get_Value;
                Scanner.Next_Token;
                if Binary.Is_First (Scanner.Get_Token) then
                    Binary.Parse (N.Bin);
                    Parse (N.More);
                else
                    raise Errors.Expecting_Binary_After_Keyword;
                end if;
            when others =>
                null;
        end case;
    end Parse;

    procedure Unparse (N : Node) is
    begin
        case N.Rule is
            when 0 =>
                null;
            when 1 =>
                Unparser.Put (N.Keyw);
                Unparser.Put (" ");
                Binary.Unparse (N.Bin);
                More_Value.Unparse (N.More);
        end case;
        Trace.Display ("fin unparse more_value");
    end Unparse;

    procedure Interpret (N : Node;
                         Selector : in out Message.Selector;
                         Arg_List : in out Parameters.List) is
        Result : Object.Reference := Object.Void_Reference;
    begin
        Errors.Save_Interpret_Line (N.Line);
        case N.Rule is
            when 0 =>  
                null;
            when 1 =>  
                Interpret (N.More, Selector, Arg_List);
                Message.Insert (N.Keyw, Selector);
                Result := Binary.Interpret (N.Bin);  
                Parameters.Insert (Result, Arg_List);
        end case;
        Trace.Display ("fin interpretation More_Value");
        Trace.Display (Result);
    end Interpret;

end More_Value;