Antlr4: sets referencing rules don't seem to work in the lexer.
fragment NLCHAR : [\n\r];
String : '"' ~('"' | NLCHAR)* '"';
parrt
All 7 comments
All i did was disallow rule refs in lexer char sets (for now?)
parrt
on 2 Dec 2012
Old issue, but I'm still bitten by that. I'd rather prefer this to be really solved (i.e. support lexer rules in sets). It's actually a regression, considering that this worked in ANTLR3. So it should get a higher prio to solve IMO.
mike-lischke
on 5 May 2016
well, antlr3->antlr4 was a complete rewrite so less a regression and more a smaller feature set ;)
parrt
on 5 May 2016
:-) probably depends on the view angle...
mike-lischke
on 5 May 2016
Hey @parrt, this is a feature which would drastically simplify some of the grammars I'm interested in. Understood that it's a feature request not a bug from this ticket, but what would be required to support fragments as set members in antlr4? I'd be happy to sink some evenings into making this happen if you're able to give some direction on where to start.
Thanks!
arrdem
on 11 May 2017
Hi @arrdem I'm afraid I'm mostly in maintenance mode; not sure what's involved but I'd be nervous about altering anything related to the ALL(*) algorithm at this point.
parrt
on 11 May 2017
at least iwth 4.5 this is still not fixed?
Enerccio
on 11 Nov 2019
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Most helpful comment
Hey @parrt, this is a feature which would drastically simplify some of the grammars I'm interested in. Understood that it's a feature request not a bug from this ticket, but what would be required to support fragments as set members in antlr4? I'd be happy to sink some evenings into making this happen if you're able to give some direction on where to start.
Thanks!