I am trying to create a plugin that removes `internal` modifiers in the compiler process. Like `kotl...

# compiler

[neworldlt]

I am trying to create a plugin that removes internal modifiers in the compiler process. Like kotlin-allopen plugin. The idea is to keep a way of having internal abuse in kotlin generated code. However, after deep-diving I hit a wall. No extension is running because Square's Anvil (and probably KSP) is generating code that does not compile due to publicly exposed internal stuff. The only exception is DeclarationAttributeAltererExtension, which runs during the resolve phase. However, DeclarationAttributeAltererExtension is able to modify only Modality.

Is there any other way to plugin during resolve phase in order to fix compilation errors?

[shikasd]

I think there's no way to do this currently, but the new frontend may have an extension point for this

[neworldlt]

I found some examples in fir-plugin-prototype , and even exactly the code I want to implement: https://github.com/JetBrains/kotlin/blob/master/plugins/fir-plugin-prototype/src/o[…]rains/kotlin/fir/plugin/FirPluginPrototypeExtensionRegistrar.kt

However, in my code FirExtensionRegistrar is not running at all.

[neworldlt]

Maybe it is an answer: https://kotlinlang.slack.com/archives/C7L3JB43G/p1622472905036600?thread_ts=1622469331.036500&cid=C7L3JB43G

Probably I need wait until 1.7

[shikasd]

Yep, I think there are some flags that you could enable to switch to fir
You can also just use 1.7.0-dev(numbers) version from kotlin-dev maven repo

[neworldlt]

1.7.0-dev was not enough, I also needed explicit enable fir: freeCompilerArgs += "-Xuse-fir"

[shikasd]

Yep, sorry I wasn't clear enough on that :)

[neworldlt]

Finally! My plugin is working. Thanks for the tip!

[shikasd]

Congrats! Happy hacking ;)

[neworldlt]

BTW, 1.6.20 works fine with my plugin. However:

Class 'com.vinted.deinternalize.sample.lib.ExternalDep' is compiled by the new Kotlin compiler frontend and cannot be loaded by the old compiler

[neworldlt]

And also, seems I will not be able to use it in the product soon enough. Too risky

[shikasd]

Yeah, you'll have to opt-in into experimental features that are known to be unstable