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scan_statement [2020/09/26 22:26] – [The SCAN construct also allows the newer LOOKBEHIND construct.] revusky | scan_statement [2021/08/07 08:21] (current) – [The SCAN construct also you to use contextual predicates.] revusky | ||
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- | ==== The SCAN construct | + | ==== The SCAN construct allows |
- | The [[lookbehind]] construct allows you to express conditions based on scanning backwards in the lookahead/ | + | The [[contextual_predicates]] construct allows you to express conditions based on scanning backwards in the lookahead/ |
- | You can find more information [[lookbehind|here]]. | + | You can find more information [[contextual_predicates|here]]. |
==== Addendum: the SCAN-less SCAN? ==== | ==== Addendum: the SCAN-less SCAN? ==== | ||
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</ | </ | ||
- | In this case, because I think it is so common, we decided to allow this. And, in fact, you can see that this is already used in internal development, | + | In this case, because I think it is so common, we decided to allow this. And, in fact, you can see that this is already used in internal development, |
- | ==== The newer SCAN construct allows you to use the newer " | ||
- | |||
- | This is documented separately. | ||
==== Recap ==== | ==== Recap ==== | ||
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* // | * // | ||
* [[semantic lookahead]], | * [[semantic lookahead]], | ||
- | * a [[lookbehind]] predicate | + | * a [[contextual_predicates]] predicate |
* [[syntactic lookahead]] | * [[syntactic lookahead]] | ||