| 
421
 | 
     1  | 
import M3._
  | 
390
Christian Urban <christian.urban@kcl.ac.uk> 
parents:  
diff
changeset
 
 | 
     2  | 
 
  | 
Christian Urban <christian.urban@kcl.ac.uk> 
parents:  
diff
changeset
 
 | 
     3  | 
val EVIL_urban = SEQ(STAR(STAR(CHAR('a'))), CHAR('b'))
 | 
Christian Urban <christian.urban@kcl.ac.uk> 
parents:  
diff
changeset
 
 | 
     4  | 
  | 
Christian Urban <christian.urban@kcl.ac.uk> 
parents:  
diff
changeset
 
 | 
     5  | 
assert(size(der('a', der('a', EVIL_urban))) == 28)
 | 
Christian Urban <christian.urban@kcl.ac.uk> 
parents:  
diff
changeset
 
 | 
     6  | 
assert(size(der('a', der('a', der('a', EVIL_urban)))) == 58)
 | 
Christian Urban <christian.urban@kcl.ac.uk> 
parents:  
diff
changeset
 
 | 
     7  | 
  | 
Christian Urban <christian.urban@kcl.ac.uk> 
parents:  
diff
changeset
 
 | 
     8  | 
assert(size(ders("aaaaaa".toList, EVIL_urban)) == 8)
 | 
Christian Urban <christian.urban@kcl.ac.uk> 
parents:  
diff
changeset
 
 | 
     9  | 
assert(size(ders(("a" * 50).toList, EVIL_urban)) == 8)
 |