Meta-programming with Kotlin compiler plugins

on YouTube ↗36m

" summary

Demo of a Kotlin compiler plugin that uses the K2 front-end and FIR extension register adapter to install a status transformer which flips private callable visibility to public; project uses Gradle KTS, compileOnly kotlin-compiler dependencies and a service file, runs with the compiler in-process so breakpoints hit (debug in-process). The example compiles and a private function is callable across files. Caveats: longer compile times, larger binaries, hard maintenance and unstable compiler APIs; prefer KSP when not modifying existing code.

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" chapters (12)

1. 0:00Introduction to meta-programming
2. 1:28Meta-programming in Kotlin
3. 7:55Kotlin 2.0 compiler plugins
4. 9:23Plugin structure overview
5. 13:21Building a plugin step-by-step
6. 21:45Debugging the plugin
7. 23:10Modifying visibility with plugin
8. 28:59Hard lessons learned
9. 31:51Resources and tools
10. 33:58Testing Kotlin compiler plugins
11. 35:25KSP vs compiler plugins
12. 36:09Q&A

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