| author | Christian Urban <christian.urban@kcl.ac.uk> |
| Wed, 09 Nov 2022 20:51:29 +0000 | |
| changeset 437 | 71d91e8924d0 |
| 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)