Does anyone have recommendations on libraries articles that kotlinlang #kapt

Does anyone have recommendations on libraries/articles that covers annotation processing of properties and objects? Is there any way to utilize Kotlin Reflect from Element/TypeElement/etc?

Edgars

10/10/2018, 5:34 AM

You could probably make use of https://github.com/Takhion/kotlin-metadata. Zac Sweers gave a talk about AP at KotlinConf, talked a lot about that library.

Here are the slides at least. https://speakerdeck.com/hzsweers/annotation-processing-in-a-kotlin-world

bdawg.io

10/10/2018, 2:55 PM

Yeah, I'm excited for the conf videos to go up during the week

raulraja

02/02/2019, 3:19 PM

Arrow has a meta tool that gives you a full kotlin AST from type element with methods to transform whatever you need and delegates code generation to Kotlin Poet

The

@extension

and

ExtensionProcessor

are written with Arrow meta. https://github.com/arrow-kt/arrow/blob/master/modules/meta/arrow-meta/src/main/java/arrow/meta/ast/ast.kt

It also works with and integrates @Eugenio's library which uses extensively to read the metadata that TypeElement lacks https://github.com/arrow-kt/arrow/blob/master/modules/meta/arrow-meta/src/main/java/arrow/meta/encoder/jvm/TypeElementEncoder.kt#L37 and for any

TypeElement

you can get it's now an AST as a

Type

https://github.com/arrow-kt/arrow/blob/master/modules/meta/arrow-meta/src/main/java/arrow/meta/encoder/jvm/TypeElementEncoder.kt#L424

just need to override this method to generate code for any annotated types.

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