Danny, what is your web / frontend use case exactly? We've started to create some frontend helpers which you can find at https://github.com/contiamo/rhombic . It's all in a very early state but we'll likely spend some more time on it in the next months. Parsing is here https://github.com/contiamo/rhombic/blob/master/src/SqlParser.ts .
On Thu, Aug 22, 2019 at 11:38 AM Muhammad Gelbana <[email protected]> wrote: > I once needed to fix this issue [1] but the fix was rejected because it > introduced worse performance than it ideally should. As mentioned in the > comments, the current approach followed in the current parser is the reason > for that. I mean if we designed the grammar differently, we could've had > fixed the linked issue a long time ago as Julian already attempted to fix > it. > > Having that said, we might go with *antlr* only to have that "better" > approach for our parsers. We don't have to dump our current parser of > course as *antlr* can be optionally activated. > > [1] https://issues.apache.org/jira/browse/CALCITE-35 > > Thanks, > Gelbana > > > On Thu, Aug 22, 2019 at 10:05 AM Danny Chan <[email protected]> wrote: > > > Thanks, Julian. > > > > I agree this would be a huge work, but I have to do this, I’m just > > wondering if any fellows here have the similar requests. > > > > Best, > > Danny Chan > > 在 2019年8月22日 +0800 PM2:15，Julian Hyde <[email protected]>，写道： > > > ANTLR isn’t significantly better than, or worse than, JavaCC, but it’s > > different. So translating to ANTLR would be a rewrite, and would be a > HUGE > > amount of work. > > > > > > > > > > > > > On Aug 21, 2019, at 8:01 PM, Danny Chan <[email protected]> > wrote: > > > > > > > > Now some of our fellows want to do the syntax promote in the WEB > page, > > and they what a parser in the front-page; The ANTLR4 can generate JS > parser > > directly but JAVACC couldn’t. > > > > > > > > So I’m wondering do you have the similar requests ? And do you think > > there is necessity to support ANTLR4 g4 file in Calcite ? > > > > > > > > > > > > Best, > > > > Danny Chan > > > > > > -- *Michael Franzkowiak* Managing Director *Contiamo* - the fastest way from data to results Address: Stresemannstraße 123 | 10963 Berlin | Germany <https://goo.gl/maps/xK1VtGifRHw> Web: www.contiamo.com Company Information (EN): Contiamo GmbH, Registered office of the company: Berlin HR Berlin-Charlottenburg, HRB no. 156569 Managing directors: Michael Franzkowiak, Lucia Hegenbartová Unternehmensinformationen (DE): Contiamo GmbH, Sitz der Gesellschaft: Berlin HR Berlin-Charlottenburg, HRB Nr. 156569 Geschäftsführer: Michael Franzkowiak, Lucia Hegenbartová
