Python ANTLR Example

I googled for an example of using ANTLR with Python3 and found bentrevett's repo, so I forked it to make a new one, up to date (May 2024) and for JavaScript instead of Java9.

I'm assuming Debian Bookworm or later as the dev environment.

Install ANTLR and Python bindings

sudo apt install antlr4 python3-antlr4

Download the grammar file (and example)

• Go to https://github.com/antlr/grammars-v4
• Find the language you want to tokenize
• Download the .g4 file(s) for that language
• Get some example code for your desired language

This is all built into the Makefile, so simply: make to download and run.

Write the code to tokenize

The parser jsparse.py was adapted from the README of the javascript grammar page.

References

• Hello Antlr, Sumeet's introduction to parsing and modifying grammars.
• Fixing lack of Base files