FredrikMeyer / elm-lisp

A Lisp interpreter in Elm

Lisp in Elm

This is a Lisp interpreter written in Elm. Test it live on fredrikmeyer.github.io/elm-lisp/.

I try to follow the instructions at Mal.

• Step 0: REPL
• Step 1: Read and print
• Step 2: Eval
• Step 3: Environments (implemented let instead of let*)
• Step 4: If fn do (mostly)
• Step 5: Tail call optimization
• Step 6: Files, mutation, and evil (files are maybe not necessary!?)
• Step 7: Quoting
• Step 8: Macros
• Step 9: Try

Run in browser

npm start

Build

npm run build

Run tests

npm test

Or

elm-test --watch

for live updates.

TODOs

• Maybe use CodeMirror to get a better editor. I.e. don't do any HTML in Elm.