Clone this repo:
  1. 7c334b1 Merge pull request #2542 from askingalot/csharp-target-syntax-highlighting by Terence Parr · 3 weeks ago master
  2. be993de syntax highlighting for csharp language target doc by Andy Collins · 3 weeks ago
  3. 837aa60 Merge pull request #2520 from akosthekiss/py3stg-listenerfile-del by Terence Parr · 8 weeks ago
  4. acbd582 Clean up namespace of generated Python3 listeners by Akos Kiss · 8 weeks ago
  5. f7022eb Merge pull request #2517 from renatahodovan/py27_import by Terence Parr · 8 weeks ago


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ANTLR (ANother Tool for Language Recognition) is a powerful parser generator for reading, processing, executing, or translating structured text or binary files. It's widely used to build languages, tools, and frameworks. From a grammar, ANTLR generates a parser that can build parse trees and also generates a listener interface (or visitor) that makes it easy to respond to the recognition of phrases of interest.

Given day-job constraints, my time working on this project is limited so I‘ll have to focus first on fixing bugs rather than changing/improving the feature set. Likely I’ll do it in bursts every few months. Please do not be offended if your bug or pull request does not yield a response! --parrt


Authors and major contributors

Useful information

You might also find the following pages useful, particularly if you want to mess around with the various target languages.

The Definitive ANTLR 4 Reference

Programmers run into parsing problems all the time. Whether it’s a data format like JSON, a network protocol like SMTP, a server configuration file for Apache, a PostScript/PDF file, or a simple spreadsheet macro language—ANTLR v4 and this book will demystify the process. ANTLR v4 has been rewritten from scratch to make it easier than ever to build parsers and the language applications built on top. This completely rewritten new edition of the bestselling Definitive ANTLR Reference shows you how to take advantage of these new features.

You can buy the book The Definitive ANTLR 4 Reference at amazon or an electronic version at the publisher's site.

You will find the Book source code useful.

Additional grammars

This repository is a collection of grammars without actions where the root directory name is the all-lowercase name of the language parsed by the grammar. For example, java, cpp, csharp, c, etc...