| author | Christian Urban <christian.urban@kcl.ac.uk> |
| Mon, 25 Dec 2023 01:10:55 +0100 | |
| changeset 479 | 78cb5cdda3c3 |
| parent 460 | f5c0749858fd |
| child 491 | 2a30c7dfe3ed |
| 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)