Awesome

javacoffee

Coffeescript-like syntax for writing Java code. :coffee:

Does not work yet!!!

npm install javacoffee -g
javacoffee Fibonacci.jc
# Generates Fibonacci.java and Fibonacci.class
java Fibonacci

TODO list

• Make very simple translations work.
• Enforce strict syntax style.
• Work on tokenizer
• Translate comments
• Translate class
• Translate methods
• Write Wiki

Examples

Fibonacci

Fibonacci
  # Print out the Fibonacci sequence for values < 50
  main
    lo = hi = 1
    println lo
    while hi < 50
      println hi
      hi = lo + hi
      lo = hi - lo

converts to

class Fibonacci {
  // Print out the Fibonacci sequence for values < 50
  public static void main(String[] args) {
    int lo = 1;
    int hi = 1;
    System.out.println(lo);
    while (hi < 50) {
      System.out.println(hi);
      hi = lo + hi;
      lo = hi - lo;
    }
  }
}

Point

Point
  +double x, y
  +&origin = Point 0 0
  Point @x @y
  +clear @x = @y = 0
  +distance(Point that):double
    xDiff = x - that.x
    yDiff = y - that.y
    Math.sqrt xDiff * xDiff + yDiff * yDiff

converts to

class Point {
  public double x, y;
  public static Point origin = new Point(0,0);
  Point(double x_value, double y_value) {
    x = x_value;
    y = y_value;
  }
  public void clear() {
    this.x = 0;
    this.y = 0;
  }
  public double distance(Point that) {
    double xDiff = x - that.x;
    double yDiff = y - that.y;
    return Math.sqrt(xDiff * xDiff + yDiff * yDiff);
  }
}

How to develop

Install and keep coffee-gulp running

npm install
coffee-gulp

Test with the following:

node ./bin/javacoffee myFile.jc

Run tests

npm test

Specific tests

mocha -g 'examples' --compilers coffee:coffee-script/register

Filetype: .jc