1. PCRE
I started playing around with PCRE today, to do some benchmarks. I compared
it with using the wxEuphoria regex functions. Basically, I ran through
wxeud.e looking for function/procedure names for building the lookup table
that I use in wxIDE. I tried using CChris' EuRegExp.e. I got rid of the
errors that Jeremy found previously, but it still wouldn't work.
Here is the main regex that I used to search:
"^[ \t]*(global[ \t]|)[ \t]*(procedure|function|type|euclass)[
\t]+([a-zA-Z][a-z_0-9A-Z]*)[ \t]*\\("
So I ran the wxEuphoria include file through this (>15,000 lines), substituting
PCRE for wxEuphoria, and the results were impressive (looping 10x):
wx: 2.49
pcre: 0.22
One possible reason for the speedup was the way I was returning the substring
information, since it requires a wxWidgets call to get each substring. So
I just cut all of that stuff out of the test, and I got:
wx: 2.49
pcre: 0.22
So this can't be the issue. I've simply linked the interpreter dynamically
to libpcre. For linux, I still suspect that this is the way to go. For
Windows, we can't depend on pcre being around, so we'll have to statically
link.
Matt
2. Re: PCRE
Matt Lewis wrote:
>
> I started playing around with PCRE today, to do some benchmarks. I compared
> it with using the wxEuphoria regex functions.
>
> wx: 2.49
> pcre: 0.22
>
That's a substantial difference. What does wxEuphoria use for regular
expressions? Are they part of wxWidgets?
--
Jeremy Cowgar
http://jeremy.cowgar.com
3. Re: PCRE
- Posted by Matt Lewis <matthewwalkerlewis at ?mail.?om>
May 05, 2008
-
Last edited May 06, 2008
Jeremy Cowgar wrote:
>
> Matt Lewis wrote:
> >
> > I started playing around with PCRE today, to do some benchmarks. I compared
> > it with using the wxEuphoria regex functions.
> >
> > wx: 2.49
> > pcre: 0.22
> >
>
> That's a substantial difference. What does wxEuphoria use for regular
> expressions?
> Are they part of wxWidgets?
Yes, it's built into wxWidgets. It uses Henry Spencer's Regex library.
Matt
