/// <summary>
/// When visit a step that is in a set value adds a <see cref="StepIsInSet"/>.
/// </summary>
/// <param name="context">The context<see cref="UserAgentTreeWalkerParser.StepIsInSetContext"/>.</param>
/// <returns>null.</returns>
public override object VisitStepIsInSet([NotNull] UserAgentTreeWalkerParser.StepIsInSetContext context)
{
this.FromHereItCannotBeInHashMapAnymore();
var lookupSetName = context.set.Text;
var lookupSet = this.walkList.lookupSets.ContainsKey(lookupSetName) ? this.walkList.lookupSets[lookupSetName] : null;
if (lookupSet is null)
{
if (this.walkList.lookups.ContainsKey(lookupSetName))
{
lookupSet = new HashSet <string>(this.walkList.lookups[lookupSetName].Keys);
}
}
if (lookupSet is null)
{
throw new InvalidParserConfigurationException($"Missing lookupSet \"{lookupSetName}\"");
}
this.Add(new StepIsInSet(lookupSetName, lookupSet));
this.VisitNext(context.nextStep);
return(null); // Void
}
/// <summary>
/// Exit a parse tree produced by the <c>stepIsInSet</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 ExitStepIsInSet([NotNull] UserAgentTreeWalkerParser.StepIsInSetContext context) { }
/// <summary>
/// Visit a parse tree produced by the <c>stepIsInSet</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 VisitStepIsInSet([NotNull] UserAgentTreeWalkerParser.StepIsInSetContext context)
{
return(VisitChildren(context));
}