Jip J. Dekker
f2a1c4e389
git-subtree-dir: software/mza git-subtree-split: f970a59b177c13ca3dd8aaef8cc6681d83b7e813
34 lines
1.2 KiB
MiniZinc
34 lines
1.2 KiB
MiniZinc
include "fzn_regular_regexp.mzn";
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/** @group globals.extensional
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The sequence of values in array \a x is accepted by the regular
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expression \a r. This constraint generates it's DFA equivalent.
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Regular expressions can use the following syntax:
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- Selection:
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- Concatenation: "12 34", 12 followed by 34.
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(Characters are assumed to be the part of the same number unless split
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by syntax or whitespace.)
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- Union: "7|11", a 7 or 11.
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- Groups: "7(6|8)", a 7 followed by a 6 or an 8.
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- Wildcard: ".", any value within the domain.
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- Classes: "[3-6 7]", a 3,4,5,6, or 7.
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- Negated classes: "[^3 5]", any value within the domain except for a 3 or a 5.
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- Quantifiers:
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- Asterisk: "12*", 0 or more times a 12.
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- Question mark: "5?", 0 or 1 times a 5. (optional)
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- Plus sign: "42+", 1 or more time a 42.
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- Exact: "1{3}", exactly 3 times a 1.
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- At least: "9{5,}", 5 or more times a 9.
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- Between: "7{3,5}", at least 3 times, but at most 5 times a 7.
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Members of enumerated types can be used in place of any integer (e.g., "A B",
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A followed by B). Enumerated identifiers still use whitespace for concatenation.
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*/
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predicate regular(array[int] of var int: x, string: r) =
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fzn_regular(x, r);
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