| author | Christian Urban <christian.urban@kcl.ac.uk> |
| Tue, 08 Nov 2022 18:35:41 +0000 | |
| changeset 431 | 4a5b59690f0a |
| parent 430 | 4029552de5fc |
| child 472 | fbff6f601370 |
| permissions | -rw-r--r-- |
import M3._ assert(nullable(ZERO) == false) assert(nullable(ONE) == true) assert(nullable(CHAR('a')) == false) assert(nullable(ZERO | ONE) == true) assert(nullable(ZERO | CHAR('a')) == false) assert(nullable(ONE ~ ONE) == true) assert(nullable(ONE ~ CHAR('a')) == false) assert(nullable(STAR(ZERO)) == true) assert(nullable(ALTs(List(ONE, CHAR('a'), ZERO))) == true) assert(nullable(SEQs(List(ONE, ALTs(List(ONE, CHAR('a'), ZERO)), STAR(ZERO)))) == true)