| author | Christian Urban <christian.urban@kcl.ac.uk> |
| Thu, 08 Dec 2022 22:19:21 +0000 | |
| changeset 451 | a4c2a9462c2e |
| parent 430 | 4029552de5fc |
| child 472 | fbff6f601370 |
| permissions | -rw-r--r-- |
| 403 | 1 |
import M3._ |
| 221 | 2 |
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assert(nullable(ZERO) == false) |
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assert(nullable(ONE) == true) |
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assert(nullable(CHAR('a')) == false)
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assert(nullable(ZERO | ONE) == true) |
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assert(nullable(ZERO | CHAR('a')) == false)
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assert(nullable(ONE ~ ONE) == true) |
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assert(nullable(ONE ~ CHAR('a')) == false)
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assert(nullable(STAR(ZERO)) == true) |
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| 430 | 11 |
assert(nullable(ALTs(List(ONE, CHAR('a'), ZERO))) == true)
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assert(nullable(SEQs(List(ONE, ALTs(List(ONE, CHAR('a'), ZERO)), STAR(ZERO)))) == true)
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| 221 | 13 |