kotlin-compiler-di

Introduction: Experiment with Kotlin compiler code generation
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An experiment on the idea of Google's Dagger using different means of code generation: Kotlin compiler.

It is a personal project to make myself more familiar with the Kotlin compiler internals and code generation in general.

For now I continue working on implementing richer feature-set. Most of the code is generated in backend using IR generation. I am also exploring better Kotlin API (probably can borrow something from Koin or Kodein).

If you, for any reason, want to look through this:

  • The plugin files are in: buildSrc/compiler-plugin/kotlin-plugin (this is what attaches to compiler)
  • The test project files is in src/main/kotlin (this is what gets compiled)

Right now I have implemented the concept of:

  • exposing dependencies through Component.
  • providing them through Module implemented as object or class instance.
  • providing using @Inject annotated constructor
  • inject dependencies into @Inject annotated fields
  • inject dependencies into @Inject annotated functions (one param only)
  • local scoping inside component using @Scope annotations

TODO (in any order):

  • Component dependencies
  • Support of @BindsInstance for components
  • Qualifier
  • Lazy and Provider support
  • Subcomponents
  • ... the rest

To launch test file

Use ./gradlew run. It will build and install plugin to maven local, after it will compile the test project using freshly built plugin and run it. Yay!

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GitHub: Trinea