How can I tell if a type parameter is a generic or concrete kotlinlang #ksp

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Title

j

jameskleeh

12/02/2021, 7:38 PM

How can I tell if a type parameter is a generic or concrete type?

Array<String>

vs

Array<T>

?

j

Jiaxiang

12/02/2021, 7:49 PM

in your case it is not type parameter but rather type argument.

j

jameskleeh

12/02/2021, 7:50 PM

Right - sorry

I see now I’m looking at the wrong api

but it doesn’t seem like KSTypeArgument has that info either

y

yigit

12/02/2021, 8:03 PM

The declaration of it will be different. https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:room/room-compiler-processing/src/main/java/androidx/room/compiler/processing/ksp/KSTypeExt.kt;l=92

If it is a type argument, the declaration will be a type parameter, is it is a concrete type, it will be a class declaration

j

Jiaxiang

12/02/2021, 8:03 PM

with

KSTypeArgument

you can get the type by resolving, and get the declaration of that type. note that

KSTypeParameter

is a subtype of

KSDeclaration

j

jameskleeh

12/02/2021, 8:08 PM

Excellent thank you!

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