Actions should be optional even if the rule has a where clause

[alexkolson]

This is my attempt at fixing #62. I'm by no means an expert on antlr but I want to see if my thought here works. The thought being that only the parser code referencing WHERE includes event_expression, all others include event_filter. It looks like, if I'm understanding correctly, that event_expression is requiring an action?

Anyway, if nothing else this is a starting point from which we can make a better solution.

Sidenote: How do we test this effectively? I'd like to avoid standing up a VM just for a local KRE environment (if possible). Making a KRE docker image sounds promising.

[windley]

This won't work (in fact doesn't...I tested it).

The event_expression is what allows you to write url.match(re/foo/) after the where clause. Event filter won't allow general expressions there.

As you say, testing this and working on it without a test environment is difficult. The Docker KRE build isn't too far from being done. I was originally going to put Mongo inside it (that's how it's build now), but I think better to run the Mongo docker container separately using a standard Mongo docker image. That's what I've been playing with lately.

[windley]

BTW, if you want a VM to test KRE changes, until the docker stuff is done, I can give you an image you can start from if you like.

[alexkolson]

Yeah that would be cool.

[alexkolson]

Closing this because it doesnt work.