public virtual void __construct(Traversable it, int flags = BYPASS_KEY, int cit_flags = CachingIterator.CATCH_GET_CHILD, int mode = SELF_FIRST)
{
if (it is IteratorAggregate ia)
{
it = ia.getIterator();
}
if (!(it is Iterator))
{
PhpException.InvalidArgument(nameof(it));
}
_flags = flags;
var cachingIt = new RecursiveCachingIterator(_ctx, (Iterator)it, cit_flags);
base.__construct(cachingIt, mode);
}
protected override void NextImpl()
{
var innerIterator = (RecursiveIterator)_iterator;
if (innerIterator.hasChildren())
{
_children = new RecursiveCachingIterator(
_ctx,
innerIterator.getChildren(),
getFlags());
}
else
{
_children = null;
}
base.NextImpl();
}