DanielXMoore/Kusanagi

CoffeeScript style syntax for Motoko language

Kusanagi

The initial work on this project was funded by the Origyn Foundation.

CoffeeScript style syntax for the Motoko language. Try Kusanagi

import State "State"

module
  public class Grid(state : State.State)
    let grid = state

    let n = grid.size()

    public func size() : Nat
      n

    func nextCell(i : Nat, j : Nat) : State.Cell
      let l : Nat = living i, j
      if get i, j
        l == 2 or l == 3
      else
        l == 3

    func next(dst : Grid)
      for i in grid.keys()
        let cool = true

        for j in grid[i].keys()
          let yo = "wat"
          dst.set i, j, nextCell i, j

Get Started

npm install -g kusanagi
kusanagi < src.ku > out.mo

Features

• Indentation based blocks
• Let shorthand x = 5 -> let x = 5
• Alternative with syntax

  let x = {
    ...a
    ...b
  }
  

  becomes

  let x = {
    a and
    b
  }
  

• Chained comparisons

  x < y <= z
  

  Becomes

  x < y and y <= z

• match

  match x, #nat(val), 0
  ---
  switch(x) {
    case(#nat(val)) { val };
    case(_){ 0 }
  };
  

• take

  take x, 0
  ---
  switch(x) {
    case(null) { 0 };
    case(?val) { val }
  };
  

• Null soaks

  student.classes?.get(classID)
  ---
  do?{student.classes!.get(classID)};