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Parser

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The Parser gem is a tooling-grade Ruby parser. Parser powers RuboCop, the most popular Ruby code analyzer. Sorbet, a static type checker, also built their parser with C++ based on this gem.

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Parser is a production-ready Ruby parser written in pure Ruby. It recognizes as much or more code than Ripper, Melbourne, JRubyParser or ruby_parser, and is vastly more convenient to use.

You can also use unparser to produce equivalent source code from Parser’s ASTs.

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Evil Martians is a developer tools consultancy founded in 2006. Creators of PostCSS, imgproxy, and 100+ open source projects with 25 billion downloads.

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