How to call java code from pkl?

[jo-devnull]

I'm embedding pkl in a Minecraft mod and so far i'm able to successfully run any pkl file and collect the module output to process in java. Now, i want to be able to call some static java method from some class inside a pkl script. I tried to look it up but i did not find any documentation on how to call java from pkl. How should i proceed?

[HT154]

Wow that's a really fun idea!! If you eventually publish the source somewhere I'd love to see it.

The most straightforward way to go about this is probably using resources: https://pkl-lang.org/main/current/language-reference/index.html

You can implement a custom ResourceReader and configuring it on your evaluator using EvaluatorBuilder.addResourceReader.

One limitation to note here is that Pkl caches resources: if you read some URI multiple times, the runtime will return the cached value from the first call's result instead of calling your reader again. This may not be desirable for your usage.

[jo-devnull]

Thanks! I'm gonna try to make a custom ResourceReader. I think that's what i want, because i just want some way of reading some data that is accessible in java but from pkl. Maybe i can make a resource reader that can output some data from minecraft and read it as a list in pkl? i'm gonna try and do that.

And yes, i'm gonna make the mod public as soon as i have some basic features (like accessing minecraft data from pkl) implemented. Thanks again!