redF: a tiny Lisp interpreter

redF is a tiny Lisp interpreter I built with a friend during the Samsung Compiler Bootcamp. It started as a “Build Your Own Lisp” style project, with a couple of our own tweaks:

Float support.
Quoting via '(...) instead of using {...} for macros.

Repository: https://github.com/ValBaturin/redF

Try it in the browser

Output

Runs fully client-side in a Web Worker (with a timeout) to avoid freezing the page.

Notes:

The demo runs fully client-side in a Web Worker with a timeout.
Some parts of the interpreter are known to be buggy (e.g. join can hang), so the timeout is intentional.

Run locally

You can run the same Fibonacci example locally without creating a temporary file:

cd /home/boss/codes/site/redF
make
./fc /dev/stdin <<'EOF'
((\ '(self n a b)
    '(cond (eq n 0)
           a
           (self self (- n 1) b (+ a b))))
 (\ '(self n a b)
    '(cond (eq n 0)
           a
           (self self (- n 1) b (+ a b))))
 10 0 1)
EOF