Only once, get the JAR for antlr:
curl -o antlr-4.13.1-complete.jar https://www.antlr.org/download/antlr-4.13.1-complete.jar
You'll need java if not already installed
sudo apt install default-jre
You only need to do this if you change the grammar file Demo.g4.
`./antlr4.sh`
pyenv local 3.12
pip install poetry # if not already
poetry self add poetry-plugin-shell
poetry install
poetry shell
To execute a program in the Demo language
./democli program1.demo
You can view the tree - TBC