What is this?

This is a Lisp interpreter, written in Rust.

Supported by the interpreter:

• Data types
  • integer
  • boolean
• Statements
  • variable definition and assignment
  • if-else
  • function definition using lambdas
  • function calls
• Keywords
  • define
  • if-else -lambda

Structure

• Lexer
• Parser
• Evaluator
• REPL

Examples

    (
        (define factorial (lambda (n) (if (< n 1) 1 (* n (factorial (- n 1))))))
        (factorial 5)
    )

    (
        (define pix 314)
        (define r 10)
        (define sqr (lambda (r) (* r r)))
        (define area (lambda (r) (* pix (sqr r))))
        (area r)
    )