re2c is a tool for writing very fast and very flexible scanners. Unlike any other such tool, re2c focuses on generating high efficient code for regular expression matching. As a result this allows a much broader range of use than any traditional lexer offers. And last but not least re2c generates warning free code that is equal to hand-written code in terms of size, speed and quality.
Extracted automatically from Re2c homepage
brew install re2c
This formula has no dependencies.