prl

A Lisp interpreter written in GNU Prolog.

• It supports the special forms define, lambda, quote, if, cons, car, cdr, eq?, null?, and atom?.
• Numerical support includes +, -, *, and /.
• Error checking is present for malformed expressions and unbound symbols.
• To exit the REPL at any time, simply write :exit (no parentheses). Use :debug to trace a program's execution. Info on using the debugger can be found here.
• Prolog is pretty snazzy for writing interpreters, so it's recommended for writing your own!