Matcheroni, a tiny C++20 header library for building lexers/parsers

In plain words

Matcheroni is a C++20 header library for building lexers and parsers as an alternative to traditional parser generators and regular expressions. It uses C++ templates to create customizable parsers with minimal build time and binary size impact while maintaining performance comparable to Boost regex. The library includes example projects such as a regex parser and a C99 lexer, designed for developers working on programming language experiments or compiler-related work.

written from the facts on this page · September 2026

From the sources

A minimalist single-header library for building pattern-matchers, lexers, and parsers. - aappleby/matcheroni

In the maker’s words, at launch

Howdy HN, as part of my ongoing programming language experiments I've ended up creating my own C++20 lexing and parsing library of sorts. Matcheroni is an alternative to parser generators and regular expressions that uses trees of C++ templates to implement highly customizable lexers and parsers that have minimal…

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