KSP and Plugins. Optimizing Kotlin Multiplatform common code
summary
Demo builds a KSP annotation processor that reads Kotlin AST, generates Kotlin source files for dependency registration, and compiles them into the multiplatform module; it speeds up work vs KAPT but cannot modify existing files and needs generated-source path tweaks. A second piece is an IR-based compiler plugin that injects lazy fields and adds automatic registration by lowering IR; it produces no source artifacts and runs correctly but is harder to implement and relies on an experimental IR backend. Both target Android and iOS.
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chapters (13)
- 0:00Introduction and speaker intro
- 1:08Kotlin Multiplatform overview
- 4:40Dependency injection challenges
- 7:14Kotlin Symbol Processing basics
- 12:35Setting up KSP in project
- 16:58Connecting KSP to annotations
- 17:20Kotlin compiler plugins overview
- 18:28Plugin structure and components
- 20:55Transformer for lazy injection
- 27:15KSP output and verification
- 28:39Automating registration with plugins
- 35:04Comparison of KSP and plugins
- 36:29Summary and final thoughts
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