Ohm: A user-friendly parsing toolkit for JavaScript and TypeScript

1. pest

   1 47 4,817 7.0 Rust

   The Elegant Parser (by pest-parser)

   

   I have been on the lookout for something that code help me with Jinja and it seems like a plausible candidate. Extra bonus points if I could actually embed the Python in the same grammar but at this point even having the code blocks segregated from the literal parts is a good start

   https://pest.rs/?g=N4Ig5gTghgtjURALhAMwJYBsCmACAvLsLgMoDyAkr...

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3. peggy

   2 11 1,026 8.8 JavaScript

   Peggy: Parser generator for JavaScript

   

   I am jealous of kids these days learning the theory of parsing. There are so many great resources out there! Ohm in particular looks great, attention to detail, care for the theory. Makes me wish I had a project to try it out.

   I am a big fan of PEG parsers. They do come with their set issues and difficulties but I always found them great to work with. My to go tool (also a PEG parser similar to Ohm) used to be pegjs now https://peggyjs.org/

   When I needed speed, or a more classical take, I would use jison. But I think today I would have to find a good reason not to build a hand made parser.

4. grammars-v4

   3 35 10,448 9.4 ANTLR

   Grammars written for ANTLR v4; expectation that the grammars are free of actions.

   

   I found some benchmarks in the ANTLR project: https://github.com/antlr/grammars-v4/blob/master/java/java/B...

     Project          Parsing/Lexing Ratio

5. lotsawa

   4 1 22 - JavaScript

   The Marpa parsing alrgorithm in Javascript

   

   Yeah, agreed.

   I just wish someone would write a "how Marpa parsing works for dummies" article. I've been curious about how it actually works ever since I was colleagues with Aria Stewart, who ported it to JS once upon a time and mentioned it's existence to me (we worked remotely and in opposite time-zones, so I never had a chance to sit down with her for a good old in-person explanation).

   [0] https://savage.net.au/Marpa.html

   [1] https://jeffreykegler.github.io/personal/timeline_v3

   [2] https://github.com/aredridel/lotsawa

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