Lisp interpreter
A lisp interpreter written for the functional programming class at EPFL.
This is a copy of an assignment I was given. I thought it was an interesting one so I shared it
How to use
Simply run sbt in the project root and then run to get to the interpreter.
This will run a (supposedly) Scheme-- interpreter. We were given specifications from the
course and as such I don't know if it follow actual Scheme-- specs.
You can declare variables like so
(val v 3) //This will bound v to 3
You can declare functions like so
(def (plusOne x) (+ x 1))
This is syntactic sugar for
(def plusOne (lambda (x) (+ x 1)))
The interpreter supports reccursive definitions so you can write
(def (factorial x) (if (= x 1)
1
(* x (factorial (- x 1)))))
(factorial 3) // returns 6
The course asked us to add 'switch-like' constructs with the keyword case
(case 3
(1 1)
(2 1)
(3 2)
(else 0)
)// returns 2
Disclaimer
Most of the code in Lisp.scala isn't my doing (some is). Credits goes to whoever made the Lisp.scala class in our assignment