Lazy Parsing

[Brandon Michael Moore]

I'm wondering if there are any libraries out there for creating parsers
that lazily build up their result. I know I could thread the remaining
input through a parser by hand, but it seems like someone should have
already done it.

I'd like to be able to turn a stream of XML into a lazy tree of tags
(probably Maybe tags, or Either errors tags), but I don't think HaXml and
the like do that sort of thing.

Branodn Moore