Added non-JVM codeowners function

core/build.gradle.kts

@@ -10,11 +10,23 @@ java.toolchain.languageVersion.set(JavaLanguageVersion.of(8))
 
 kotlin {
     jvm()
+    macosArm64()
+    iosArm64()
+    iosSimulatorArm64()
+    js(IR) { browser(); nodejs() }
+    applyDefaultHierarchyTemplate()
+
+    sourceSets {
+        val nonJvmMain by creating { dependsOn(commonMain.get()) }
+        iosMain { dependsOn(nonJvmMain) }
+        jsMain { dependsOn(nonJvmMain) }
+    }
 }
 
 dependencies {
     commonTestImplementation(libs.kotlin.test)
     commonTestImplementation(platform(libs.junit.bom))
+    "nonJvmMainImplementation"(libs.kotlin.reflect)
 }
 
 publishing.repositories {

core/src/commonMain/kotlin/io/github/gmazzo/codeowners/CodeOwner.kt

@@ -0,0 +1,7 @@
+package io.github.gmazzo.codeowners
+
+@Repeatable
+@Retention(AnnotationRetention.RUNTIME)
+annotation class CodeOwner(
+    val value: String
+)

core/src/commonMain/kotlin/io/github/gmazzo/codeowners/CodeOwners.kt

@@ -0,0 +1,10 @@
+package io.github.gmazzo.codeowners
+
+import kotlin.reflect.KClass
+
+inline fun <reified Type> codeOwnersOf() =
+    Type::class.codeOwners
+
+expect val KClass<*>.codeOwners: Set<String>
+
+expect val Throwable.codeOwners: Set<String>

core/src/jvmMain/kotlin/io/github/gmazzo/codeowners/CodeOwners.kt → core/src/jvmMain/kotlin/io/github/gmazzo/codeowners/CodeOwnersJVM.kt

@@ -6,17 +6,14 @@ import java.io.Reader
 import java.lang.reflect.Proxy
 import kotlin.reflect.KClass
 
-inline fun <reified Type> codeOwnersOf() =
-    Type::class.codeOwners
-
-val KClass<*>.codeOwners
+actual val KClass<*>.codeOwners: Set<String>
     get() = java.codeOwners
 
-val Class<*>.codeOwners: Set<String>?
+val Class<*>.codeOwners: Set<String>
     get() = with(topLevelClass()) { classLoader.getCodeOwners(`package`?.name, simpleName) }
 
-val Throwable.codeOwners
-    get() = stackTrace.asSequence().mapNotNull { it.codeOwners }.firstOrNull()
+actual val Throwable.codeOwners
+    get() = stackTrace.asSequence().mapNotNull { it.codeOwners }.firstOrNull().orEmpty()
 
 private tailrec fun Class<*>.topLevelClass(): Class<*> = when (val enclosing = enclosingClass) {
     null -> when {
@@ -27,18 +24,18 @@ private tailrec fun Class<*>.topLevelClass(): Class<*> = when (val enclosing = e
     else -> enclosing.topLevelClass()
 }
 
-val StackTraceElement.codeOwners: Set<String>?
+val StackTraceElement.codeOwners: Set<String>
     get() {
-        val clazz = runCatching { Class.forName(className) }.getOrNull() ?: return null
+        val clazz = runCatching { Class.forName(className) }.getOrNull() ?: return emptySet()
 
         return fileName?.substringBeforeLast('.')
             ?.let { clazz.classLoader.getCodeOwners(clazz.`package`.name, it) }
             ?: clazz.codeOwners
     }
 
 @JvmOverloads
-tailrec fun ClassLoader.getCodeOwners(packageName: String?, className: String? = null): Set<String>? {
-    val packagePath = packageName?.replace('.', '/') ?: return null
+tailrec fun ClassLoader.getCodeOwners(packageName: String?, className: String? = null): Set<String> {
+    val packagePath = packageName?.replace('.', '/') ?: return emptySet()
     val path = "$packagePath/${className.orEmpty()}.codeowners"
     val owners = getResources(path).asSequence()
         .flatMap { it.openStream()?.reader()?.use(Reader::readLines).orEmpty() }
@@ -47,6 +44,6 @@ tailrec fun ClassLoader.getCodeOwners(packageName: String?, className: String? =
     if (owners.isNotEmpty()) return owners
     if (className != null) return getCodeOwners(packageName, null)
     val index = packagePath.lastIndexOf('/')
-    if (index < 0) return null
+    if (index < 0) return emptySet()
     return getCodeOwners(packagePath.substring(0, index), null)
 }

core/src/nonJvmMain/kotlin/io/github/gmazzo/codeowners/CodeOwners.kt

@@ -0,0 +1,11 @@
+package io.github.gmazzo.codeowners
+
+import kotlin.reflect.KClass
+
+actual val KClass<*>.codeOwners: Set<String>
+    get() = annotations.asSequence()
+        .filterIsInstance<CodeOwner>()
+        .map { it.value }
+
+actual val Throwable.codeOwners: Set<String>
+    get() = this::class.codeOwners

gradle/libs.versions.toml

@@ -4,6 +4,7 @@ kotlin = "1.9.21"
 [libraries]
 jgit = "org.eclipse.jgit:org.eclipse.jgit:6.7.0.202309050840-r"
 junit-bom = "org.junit:junit-bom:5.8.1"
+kotlin-reflect = { module = "org.jetbrains.kotlin:kotlin-reflect", version.ref = "kotlin" }
 kotlin-test = { module = "org.jetbrains.kotlin:kotlin-test", version.ref = "kotlin" }
 
 [plugins]