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scan_statement [2020/09/26 22:34] – [Addendum: the SCAN-less SCAN?] revuskyscan_statement [2021/08/07 08:21] (current) – [The SCAN construct also you to use contextual predicates.] revusky
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-==== The SCAN construct also allows the newer LOOKBEHIND construct. ====+==== The SCAN construct allows you to use contextual predicates. ====
  
-The [[lookbehind]] construct allows you to express conditions based on scanning backwards in the lookahead/call stack. This can only be used in conjunction with the newer ''SCAN'' statement, not with the legacy ''LOOKAHEAD'' construct. +The [[contextual_predicates]] construct allows you to express conditions based on scanning backwards in the lookahead/call stack. This can only be used in conjunction with the newer ''SCAN'' statement, not with the legacy ''LOOKAHEAD'' construct. 
  
-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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   * //numerical// lookahead, i.e. the maximum number of tokens to scan ahead   * //numerical// lookahead, i.e. the maximum number of tokens to scan ahead
   * [[semantic lookahead]], i.e. arbitrary java code enclosed in {..}   * [[semantic lookahead]], i.e. arbitrary java code enclosed in {..}
-  * a [[lookbehind]] predicate+  * a [[contextual_predicates]] predicate
   * [[syntactic lookahead]]   * [[syntactic lookahead]]