author | Christian Urban <urbanc@in.tum.de> |
Mon, 24 Sep 2018 11:05:39 +0100 | |
changeset 558 | 447ed6c7cdad |
parent 408 | 5322e1c46890 |
permissions | -rw-r--r-- |
408
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
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def rev(r: Rexp) : Rexp = r match { |
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
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case ZERO => ZERO |
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
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case ONE => ONE |
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
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case CHAR(c) => CHAR(c) |
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
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case ALT(r1, r2) => ALT(rev(r1), rev(r2)) |
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
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case SEQ(r1, r2) => SEQ(rev(r2), rev(r1)) |
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
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case STAR(r) => STAR(rev(r)) |
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Christian Urban <christian dot urban at kcl dot ac dot uk>
parents:
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} |