Stand Alone Erlang

Hakan Mattsson hakan@REDACTED
Mon Mar 15 12:01:57 CET 2004

On Fri, 12 Mar 2004, Peter-Henry Mander wrote:

> Do you imply that if the scanner was incorporated into the C driver,
> there would be a speed gain of up to 10 times faster? This would be not
> so negligable!

As the speedup only concerns the scanner part, it depends largly on
how much else your application is doing besides scanning.

> It wasn't too trivial (for me a least!) writing the whole SIP codec in
> Erlang from the ABNF specs, including tel-URI. It took me a couple of
> weeks of trial and error. What would it be like to implement it in
> lex/flex as a C driver?

It depends on how well written the ABNF spec is.
If it maps well to a lex/flex grammar it should not be so much work.

The most work with the Megaco flex scanner was caused by a poor ABNF spec.


This communication is confidential and intended solely for the addressee(s). Any unauthorized review, use, disclosure or distribution is prohibited. If you believe this message has been sent to you in error, please notify the sender by replying to this transmission and delete the message without disclosing it. Thank you.

E-mail including attachments is susceptible to data corruption, interruption, unauthorized amendment, tampering and viruses, and we only send and receive e-mails on the basis that we are not liable for any such corruption, interception, amendment, tampering or viruses or any consequences thereof.

More information about the erlang-questions mailing list