Grammar online editor/tester

[mingodad]

I've just added this project grammar to https://mingodad.github.io/parsertl-playground/playground/ an Yacc/Lex compatible online editor/tester (select Influxql parser from Examples then click Parse to see a parser tree for the content in Input source editor).

I hope it can help debug/develop/test/document this project grammar !

Any feedback is welcome !