[ragel-users] Using Ragel to parse a binary message (WebSocket)

[Adrian Thurston]

I don't advertise this very often, but it's possible to use conditions 
to require certain bit patterns. Improving conditions are the focus of 
ragel 7. I am hoping to give them a better run-time implementation.

main := any when { fc & 0xf0 };

On 11-08-15 08:54 AM, Bob Paddock wrote:
> On Mon, Aug 15, 2011 at 11:32 AM, Iñaki Baz Castillo<ibc at aliax.net>  wrote:
>> Hi, I do know that Ragel cannot parse bits but just bytes.
>
> The language Erlang will do pattern matching at the bit level.
> That certainly would be a nice addition to Ragel for using it in
> Embedded Systems work.
>
>> maybe is it possible to use it for a binary packet format as WebSocket
>> frames as defined in:
>
> This of any help?:
>
> http://www.zedshaw.com/essays/ragel_state_charts.html
>
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