| 
153
 | 
     1  | 
  | 
| 
160
 | 
     2  | 
//import scala.concurrent._
  | 
| 
 | 
     3  | 
//import scala.concurrent.duration._
  | 
| 
 | 
     4  | 
//import ExecutionContext.Implicits.global
  | 
| 
 | 
     5  | 
//import scala.language.postfixOps 
  | 
| 
 | 
     6  | 
//import scala.language.reflectiveCalls
  | 
| 
153
 | 
     7  | 
  | 
| 
 | 
     8  | 
  | 
| 
160
 | 
     9  | 
//lazy val f = Future {
 | 
| 
153
 | 
    10  | 
  import CW8a._
  | 
| 
 | 
    11  | 
  | 
| 
 | 
    12  | 
  assert(der('a', ZERO | ONE) == (ZERO | ZERO))
 | 
| 
 | 
    13  | 
  assert(der('a', (CHAR('a') | ONE) ~ CHAR('a')) == ALT((ONE | ZERO) ~ CHAR('a'), ONE))
 | 
| 
 | 
    14  | 
  assert(der('a', STAR(CHAR('a'))) == (ONE ~ STAR(CHAR('a'))))
 | 
| 
 | 
    15  | 
  assert(der('b', STAR(CHAR('a'))) == (ZERO ~ STAR(CHAR('a'))))
 | 
| 
160
 | 
    16  | 
//}
  | 
| 
153
 | 
    17  | 
  | 
| 
160
 | 
    18  | 
//Await.result(f, 120 second)
  |