public override Node VisitProgram([NotNull] coolgrammarParser.ProgramContext context)
        {
            var clases = new List <Class_Def>();

            foreach (var item in context.@class())
            {
                clases.Add((Class_Def)Visit(item));
            }
            return(new Program(clases));
        }
 /// <summary>
 /// Visit a parse tree produced by <see cref="coolgrammarParser.program"/>.
 /// <para>
 /// The default implementation returns the result of calling <see cref="AbstractParseTreeVisitor{Result}.VisitChildren(IRuleNode)"/>
 /// on <paramref name="context"/>.
 /// </para>
 /// </summary>
 /// <param name="context">The parse tree.</param>
 /// <return>The visitor result.</return>
 public virtual Result VisitProgram([NotNull] coolgrammarParser.ProgramContext context)
 {
     return(VisitChildren(context));
 }