Cybby the Language

This was my toy project some time ago. It's a language interpreter written in Node.js. It consists of a parser and a simple execution machine. There are no tests, and the execution machine has only a small subset of functions (arithmetics and output).

Language Syntax

This language is from a Lisp-family, it's based on S-expressions.
A distinct feature is that, unlike in Lisp, you can also use whitespace indentation, similarly to how it's used in Python.

The following two statements are identical:

(funcFoo (funcBar (+ 1 2))

funcFoo
  funcBar
    + 1 2

You can combine these styles together, so that the code looks more readable (less parenthesis).

define twice а
  return (* a 2)

repeat (twice (twice 10))
  turnLeft 10
  move
  turnRight 5

Compare the above code with a Lisp-ish one:

(define twice (а)
  (* a 2))

(repeat (twice (twice 10))
  (begin
    (turnLeft 10)
    (move)
    (turnRight 5)))

Square brackets are used to identify arrays (quoted lists). Comments are marked with semicolons.

let fooBar [ 1 'yes' 3 'for sure' ]     ; comments