Before anything else, let me state this: Of course it's going to be PAINFULLY slow on MRI. That's not the point :)
I thought I'd try out writing out a Ruby version of the parser for the purposes of Rubinius. For those of you who aren't aware, Ragel supports a goto-driven FSM on Rubinius by injecting assembly directly, and Rubinus head honcho guy Evan Phoenix is working on a patch for Ragel to update it to the new compiler semantics. So really, there is a purpose for trying this out. Anyway, here's my initial hack. It's nasty, and presently jams the entire FSM into instance-specific data. Aieee! But it more or less seems to generate similar (albeit not identical) output to the C one: http://git.rubini.us/?p=code;a=blob;f=lib/mongrel/http11_parser.rb.rl;h=508f9bd42b4aad322f357637d52576f780707a2f;hb=868732662abbf4aa571bf2f3d598152467f6f4da I've thought about having a Mongrel::HttpParser::FSM module to store the actual Ragel-generated state machine, and pass all ivars from the Mongrel::HttpParser to an execute method then recapture them as return values, or something to that effect. Thoughts? Suggestions? Complete rewrites? I'd appreciate them all. -- Tony Arcieri medioh.com
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