Is there an existing ANTLR or IRONY grammar for R?

Asked 18/4, 2011 at 15:54 Answered 1/2, 2012 at 20:33

Does anyone know if there is an existing existing ANTLR or IRONY grammar for R?

Many thanks.

Offish answered 18/4, 2011 at 15:54 Comment(8)

Did you already find the Bison/Flex grammar in their SVN repository? If no one posts an ANTLR- or IRONY grammar, you could convert the Bison/Flex to either of those. – Apothegm 18/4, 2011 at 16:22

What do you intend to do with it? Usually having just a parser doesn't buy you much; you typically need an AST, ways to traverse/analyze/modify the AST, etc. – Emergence 18/4, 2011 at 17:15

@Bart Kiers - thanks! I'll certainly look into it! – Offish 19/4, 2011 at 9:50

@Ira Baxter - Apologies if my terms/understanding is incorrect, currently I'm using irony for a small DSL that converts to .net - based on that I've been asked to look at a way to interpret R – Offish 19/4, 2011 at 9:51

"a way to interpret R". This implies you need an AST, means to walk over it program execution order (fun when hit a goto:where is the target in the tree?) and symbol tables (which can answer the "target" question I just asked) as a minimum. – Emergence 19/4, 2011 at 13:55

@Offish can I ask you if you ever resolved this matter? I need similar R parser but RCC site is not providing download link anymore. Can you share your experience please? – Floris 17/11, 2011 at 18:23

@Charles, please leave the tag antlr4 there. The question does not mention that antlr4 cannot be used, and by adding this tag, it will be more easily found. Besides, Terence asked me to create a tag (since he didn't have enough rep to do so at that time) and this being the only question with the antlr4 tag, you removing it caused the "wiki/info" of this tag to be removed as well. Thanks for your consideration. – Apothegm 15/4, 2012 at 18:40

@BartKiers, I will honor your request, however I still object to the tag needing to exist. Tags are for questions, not for answers; there is nothing at all in the question that seems version-specific whatsoever. Perhaps you can find some other questions that could also be tagged with antlr4? This question alone seems like a bad starting point. – Snooze 16/4, 2012 at 1:11

I've built an R grammar for the early access "Honey Badger" ANTLR v4 release, if you'd like to give it a look. See the ANTLR v4 Examples page. Source for v4 is https://github.com/antlr/antlr4. binary jar here: http://antlr.org/download/antlr-4.0ea-complete.jar For R you want http://www.antlr.org/wiki/download/attachments/28049418/R.g4

Leaper answered 1/2, 2012 at 20:33 Comment(2)

I haven't really looked at v4 yet, but I will do so soon after seeing how ridiculously short that R grammar is. Nice! – Apothegm 1/2, 2012 at 20:43

Some of the links no longer work - any chance of updated ones? Thanks – Oliphant 10/12, 2013 at 23:43

I'd guess a good place to look would be R to C Compiler (RCC) that was developed by John Garvin at Rice

Emergence answered 18/4, 2011 at 17:55 Comment(1)

Thanks Ira - I will check it out and mark your answer accepted if nothing else appears, many thanks. – Offish 19/4, 2011 at 9:51

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