Rewriting the Ruby parser

At Shopify, we have spent the last year writing a new Ruby parser, which we’ve called YARP (Yet Another Ruby Parser). As of the date of this post, YARP can parse a semantically equivalent syntax tree to Ruby 3.3 on every Ruby file in Shopify’s main codebase, GitHub’s main codebase, CRuby, and the 100 most popular gems downloaded from rubygems.org. We recently got approval to merge this work into CRuby, and are very excited to share our work with the community. This post will take you through the motivations behind this work, the way it was developed, and the path forward.

Generic-Disposable,

Is this is one written in rust? If so the same parser can be used by other implementations of ruby too I think.

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