async-without-indent

a.txt

some

b.txt

data

main.js

var fs = require('fs');

function readFile (filename) {
  return function () {
    fs.readFile(filename, 'utf8', arguments.callee.next);
  }
}

function getData() {
  return function (err, data) {
    if (err) throw err;
    if (arguments.callee.next) {
      arguments.callee.next(data);
    }
  }
}

function putStrLn () {
  return function (data) {
    console.log(data);
    if (arguments.callee.next) {
      arguments.callee.next();
    }
  }
}

function wait (time) {
  return function () {
    setTimeout(arguments.callee.next, time);
  }
}

function param (val) {
  return function () {
    arguments.callee.next(val);
  }
}


var main;
main = new param('hello');
main.next = new putStrLn;
main.next.next = new wait(1000);
main.next.next.next = new param('world');
main.next.next.next.next = new putStrLn;
main.next.next.next.next.next = new readFile('a.txt');
main.next.next.next.next.next.next = new getData;
main.next.next.next.next.next.next.next = new putStrLn;
main.next.next.next.next.next.next.next.next = new readFile('b.txt');
main.next.next.next.next.next.next.next.next.next = new getData;
main.next.next.next.next.next.next.next.next.next.next = new putStrLn;

main();