public object VisitDesigBasicFactorAST(DesigBasicFactorAST v,object arg)
 {
     return v.desig.visit(this,arg);
 }
 //vacio
 public object VisitDesigBasicFactorAST(DesigBasicFactorAST v,object arg)
 {
     ILGenerator generador=(ILGenerator)arg;
     FieldBuilder variable=(FieldBuilder)v.desig.visit(this,arg);
     generador.Emit(OpCodes.Ldsfld,variable);
     return null;
 }
        public object VisitDesigBasicFactorAST(DesigBasicFactorAST v,object arg)
        {
            int numaux = ((int)arg);
            printtab(numaux);
            resultado = resultado +"\n"+(v.GetType());

            if (v.desig != null)
                v.desig.visit(this,numaux+1);
            else{
                printtab(numaux+1);
                resultado = resultado +"\n"+("NULL");
            }
            return null;
        }