private static void Add(this SortedList <int, MonthNode> months, MonthNode month)
{
try {
months.Add(month.Month, month);
}
catch (ArgumentException) {
months[month.Month].Days.Addpend(month.Days);
}
}
private static MonthNode EvalMonth(Cons cons)
{
if ((cons.car as string).ToLower() == "month")
{
MonthNode month = new MonthNode((cons.cdr as Cons).car as string);
Cons daysCollection = (cons.cdr as Cons).cdr as Cons;
foreach (Cons day in daysCollection)
{
month.Days.Add(EvalDay(day));
}
return(month);
}
else
{
throw new Exception($"无效的标记：{cons.car}");
}
}