!636
!standard functions
!multi-line strings

main {
  psvm {
    String cmd = "expand #655";
    String[] words = cmd.split(" +");
    System.out.println(words[0]);
    System.out.println(words[1]);
    String sentence = "You want to " + quote(words[0]) + " " + quote(words[1]) + ".";
    System.out.println(sentence);
    
    Engine engine = new Engine();
    engine.rules.add(new Rule(
      [[You want to "expand" A.]],
      [[You should run "#todo" with argument A.]]));
  }
  
  static class Form {
    String pattern;
    List<String> elements = new ArrayList<String>();
  }
  
  static Form parseForm(String s) {
    return new Form();
    // TODO
  }
  
  static class Rule {
    Form ante, post;
    
    Rule(String ante, String post) {
      this.ante = parseForm(ante);
      this.post = parseForm(post); 
    }
  }
  
  static class Engine {
    List<Rule> rules = new ArrayList<Rule>();
  }
}