Re: java.net.URI implementation

[Per Bothner]

Giannis Georgalis wrote:
> I agree with you. I found JFlex <http://www.jflex.de>, that is *much*
> faster than a hand-written scanner, as the benchmarks below
> show.

I think space is *much* more important than speed when it comes
to parsing URIs.  How big is the generated scanner?

I'm also skeptical as to how JFlex is faster.  The only thing I
can think of is that a generated parser might use fewer method
calls that most hard-written parsers.  But unless you show
a hand-written parser next to the JFlex parser, I can't tell
whether the hand-written parser is just poorly written.

Of course a complicated Perl-style regular expression with
backtracking will be very difficult to implement by hand,
but parsing URIs shouldn't need that.
--
        --Per Bothner
address@hidden   http://www.bothner.com/per/