Easylex is a go library designed to simplify the process of lexing in go. It was developed while working on a lexer and parser for the N3 file format, gon3. Easylex aims to be simple, performant, and easily extensible.

Easylex borrows Rob Pike's lexer design for go's native templates. That design, however, quickly becomes cumbersome when dealing with a more complicated grammar; trying to lex a language with more complexity than go's relatively simple templates will quickly lead to repetitive, hard-to-read code.