Parsing Expressions in Ruby 3.99 http://spkr8.com/t/4403

Description:

Parsing expressions are a relatively new technique for creating parsers (and even interpreters) simply and quickly. Several popular Ruby projects make use of parsing expression grammars to parse relatively complex grammars, including Rails' new mail gem and Less CSS. In short, parsing expressions are a very handy tool that programmers can use whenever they need to parse something that can't really be expressed using regular expressions. The most popular library for creating parsing expression grammars in Ruby is currently Treetop. I tried to get into Treetop, but I found the codebase difficult to understand and a bit awkward. So I created my own library for parsing expressions called Citrus. I'd like to talk about both libraries, and spend more time on the idea of parsing expressions instead of touting a specific lib though.

Comments on this Talk

Marvin marvinpjr, 04 Sep 03:36 PM

That talk was awesome. I can think of awesome things I could do with what you showed us.

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Stream.26915 lorennorman, 07 Sep 12:08 AM

This was the jewel I was waiting for, probably the best technical talk of the conference. Despite being surprised by how much the audience already knew, MJ got down to business and showed us just how powerful parsing expressions (and his Treetop competitor gem, Citrus) really are.

Stream.28776 Jon Kinney, 07 Sep 07:21 AM

The content was awesome, but Michael jumped around a bit making some things sort of hard to follow. But I knew a lot more coming out than I did going in so that was a huge win! Thanks for the Citrus gem too MJ!

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13 Ratings: 3.99

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