How can I create a KSTypeReference from a class?

# ksp

[jameskleeh]

How can I create a KSTypeReference from a class?

[yigit]

https://github.com/google/ksp/blob/main/api/src/main/kotlin/com/google/devtools/ksp/processing/Resolver.kt#L101

[Jiaxiang]

and you can call asStarProjectedType or asType() to get a KSType from KSClassDeclaration

[jameskleeh]

So I have a KClass

[jameskleeh]

This is in regards to trying to understand the generics api

[jameskleeh]

I have an object that is known to implement X<Y,Z> and I want to get the values of Y and Z

[jameskleeh]

I’m trying to get it by resolver.getTypeArgument and passing in the variance from the declaration.typeArguments, but the method on the resolver takes in a KSType and I just have a KClass of the known type

[yigit]

Are you interested in the bounds of Y/Z ? because, otherwise, they don't mean anything until you have a type referencing it

[yigit]

this might help if you want bounds:

https://cs.android.com/androidx/platform/frameworks/support/+/androidx-main:room/roo[…]/java/androidx/room/compiler/processing/ksp/KSTypeExt.kt;l=76

[Jiaxiang]

if you already have the KClass, then you can get the KSClassDeclaration by resolver.getClassDeclarationByName(KClass.qualifiedName)

[jameskleeh]

@yigit Yes the bounds. I have the object that has the specified values for Y and Z

[jameskleeh]

I’ll give those extensions a look - thanks