Readme

Scheme interpreter

Installation

build from source

git clone https://github.com/garlic0x1/scheme-interpreter.git
cd scheme-interpreter
cargo install --path .
scheme-interpreter

Usage

Commands:
  eval  evaluate a string
  run   run a file as a program
  repl  start a REPL
  help  Print this message or the help of the given subcommand(s)

Options:
  -h, --help     Print help
  -V, --version  Print version

Implemented

A list of what is done (not exhaustive)

special forms:

• eval

  (eval (quote (println {:hi "world"})))
      

  evaluate Edn as lisp

• load

  (load "test.scm")
      

  Evaluate a file

• lambda

  (lambda [x] (println x))
      

  Create an anonymous function

• def

  (def x "var")
      

  Define in global namespace

• if

  (if pred? then else)
      

  If statement, returns branch. nil, false, 0, “”, etc are falsy

• do

  (do (println "1") (println "2"))
      

  Evaluate multiple exprs, return last

• quote

  (quote (1 2 3))
      

  Return list without evaluating

native fns:

• conj
• cons
• car
• cdr
• =
• +
• *
• /
• mod
• int
• str
• type
• read
• slurp
• println
• dbg