KSP examples

Get all member functions

fun KSClassDeclaration.getDeclaredFunctions(): List<KSFunctionDeclaration> =
    declarations.filterIsInstance<KSFunctionDeclaration>()

Check whether a class or function is local

fun KSDeclaration.isLocal(): Boolean =
    parentDeclaration != null && parentDeclaration !is KSClassDeclaration

Find the actual class or interface declaration that the type alias points to

fun KSTypeAlias.findActualType(): KSClassDeclaration {
    val resolvedType = this.type.resolve().declaration
    return if (resolvedType is KSTypeAlias) {
        resolvedType.findActualType()
    } else {
        resolvedType as KSClassDeclaration
    }
}

Collect suppressed names in a file annotation

// @file:kotlin.Suppress("Example1", "Example2")
fun KSFile.suppressedNames(): List<String> {
    val ignoredNames = mutableListOf<String>()
    annotations.filter {
        it.shortName.asString() == "Suppress" && it.annotationType.resolve()?.declaration?.qualifiedName?.asString() == "kotlin.Suppress"
    }.forEach {
        val argValues: List<String> = it.arguments.flatMap { it.value }
        ignoredNames.addAll(argValues)
    }
    return ignoredNames
}

Last modified: 31 May 2023