anyway to convert from GRL syntax to json?

[syoshimoto]

I see there's a way to go from json rule syntax to standard grl text format. Is there a reverse function to go from the grl format to json?

[newm4n]

No such tool that I can think of. But you can use the AST object to export the AST Tree to JSON.
It would be great if you can contribute to make such tool.