/// <summary>
/// When visit a step down adds a <see cref="StepDown"/>.
/// </summary>
/// <param name="context">The context<see cref="UserAgentTreeWalkerParser.StepDownContext"/>.</param>
/// <returns>null.</returns>
public override object VisitStepDown([NotNull] UserAgentTreeWalkerParser.StepDownContext context)
{
this.Add(new StepDown(context.numberRange(), context.name.Text));
this.VisitNext(context.nextStep);
return(null); // Void
}
/// <summary>
/// Exit a parse tree produced by the <c>stepDown</c>
/// labeled alternative in <see cref="UserAgentTreeWalkerParser.path"/>.
/// <para>The default implementation does nothing.</para>
/// </summary>
/// <param name="context">The parse tree.</param>
public virtual void ExitStepDown([NotNull] UserAgentTreeWalkerParser.StepDownContext context) { }
/// <summary>
/// Visit a parse tree produced by the <c>stepDown</c>
/// labeled alternative in <see cref="UserAgentTreeWalkerParser.path"/>.
/// <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 VisitStepDown([NotNull] UserAgentTreeWalkerParser.StepDownContext context)
{
return(VisitChildren(context));
}