Hello calcite developers, I am working on a project that utilizes the calcite-core and I would like to extend the parser to support syntax that is custom to my application. I believe some of the additions I would like are supported by SQL offerings (such as <=> in SparkSQL) and could be included in the main project, but I have other additions that are unique to just my project.
I found a stackoverflow post online that suggested I may need to clone calcite and build from source (I'm currently downloading the jar), but I am wondering if it is possible to extend the parser without maintaining my own clone. For context, I may need to add new TOKENs and I want to extend existing statements with additional input options, so I do not believe I can just add changes to the .fmpp file (although I would appreciate further clarification on how that works as well). Thanks, NIck Riasanovsky
