From Ohm's README file: > Like its older sibling OMeta, Ohm supports object-oriented grammar extension. One thing that distinguishes Ohm from other parsing too

From Ohm's README file: > Like its older sibling OMeta, Ohm supports object-oriented grammar extension. One thing that distinguishes Ohm from other parsing tools is that it completely separates grammars from semantic actions. In Ohm, a grammar defines a language, and semantic actions specify what to do with valid inputs in that language. Semantic actions are written in the host language -- e.g., for Ohm/JS, the host language is JavaScript. Ohm grammars, on the other hand, work without modification in any host language. This separation improves modularity, and makes both grammars and semantic actions easier to read and understand. You can read all about it here: https://github.com/harc/ohm https://github.com/harc/ohm