Yes, I alluded to that in another thread, "How to make a syntactic predicate exit a rule completely". I am a beginner in this area, but I think that what you said is true of syntactic predicates as well. I think it would make ANTLR more powerful, if this feature existed (of not matching a rule if all or the only predicate(s) fail in it), but as Jim pointed out, there could be problems such as bad development practices. If you do use predicates, it would seem more intuitive to work that way.
2009/10/17 David-Sarah Hopwood david-sa...@jacaranda.org > I think we have to interpret this as an ANTLR bug, not the grammar writer > being confused. Conceptually, a gated semantic predicate with a single > alternative has a clear meaning: if the predicate fails then it should be > equivalent to a rule that never matches. It would be very strange for it > to mean anything else. > > -- > David-Sarah Hopwood ⚥ http://davidsarah.livejournal.com > > > List: http://www.antlr.org/mailman/listinfo/antlr-interest > Unsubscribe: > http://www.antlr.org/mailman/options/antlr-interest/your-email-address > --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "il-antlr-interest" group. To post to this group, send email to il-antlr-interest@googlegroups.com To unsubscribe from this group, send email to il-antlr-interest+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/il-antlr-interest?hl=en -~----------~----~----~----~------~----~------~--~---
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