A simple lisp implementation in Java.

Dedicated to the memory of Josep Mª Ribó.

This project uses maven, so to build it you can do:

mvn package

This creates a jar file in the target directory. To run it, you do:

java -jar target/butterp-1.0-SNAPSHOT.jar

To exit the REPL type :exit at the prompt.

An instance of the simple WebRepl application is deployed at https://butterp.herokuapp.com

• t
• nil
• integers
• symbols

• (define symbol sexpr)
• (quote sexpr)
• (lambda (args) body)
• (if cond-sexpr then-sexpr else-sexpr)
• (macro (arg) body)

• (car list)
• (cdr list)
• (cons sexpr list)
• (eq sexpr sexpr)
• (add integer integer)
• (mult integer integer)
• (eval sexpr)
• (apply fn-sexpr args-list)