37 lines
532 B
Plaintext
37 lines
532 B
Plaintext
Regex : Alternation
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Alternation : AtomicOps Alternation'
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Alternation' : '|' AtomicOps Alternation'
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AtomicOps : AtomicOp AtomicOps
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AtomicOp : Atomic
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| Atomic Op
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Atomic : Concat
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| Group
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Op : '+'
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| '*'
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| '?'
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Group : '(' Alternation ')'
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Concat : Char Concat
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| e
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Char : CHAR
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| CharRange
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CharRange : '[' RangeInner ']'
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| '[' '^' RangeInner ']'
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RangeInner : RangeComponent RangeInner
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RangeComponent : CHAR
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| CHAR '-' CHAR
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