Support new repeatable annotations in kotlin-reflect

- Unwrap Kotlin-repeatable annotations (with implicit container) - Introduce `KAnnotatedElement.findAnnotations` to find instances of repeated annotations #KT-12794
2021-07-24 03:33:42 +02:00
parent 67128c022a
commit 0a6d010d1c
23 changed files with 448 additions and 3 deletions
@@ -0,0 +1,54 @@
+// !LANGUAGE: +RepeatableAnnotations
+// !USE_EXPERIMENTAL: kotlin.ExperimentalStdlibApi
+// TARGET_BACKEND: JVM_IR
+// JVM_TARGET: 1.8
+// FULL_JDK
+// WITH_REFLECT
+
+// Test failed to run to completion. Reason: 'Instrumentation run failed due to 'Native crash''. Check device logcat for details
+// IGNORE_BACKEND: ANDROID
+
+import kotlin.annotation.AnnotationTarget.*
+import kotlin.reflect.KAnnotatedElement
+import kotlin.reflect.full.findAnnotation
+import kotlin.reflect.full.findAnnotations
+import kotlin.reflect.full.hasAnnotation
+
+fun check(element: KAnnotatedElement) {
+    if (!element.hasAnnotation<A>()) throw AssertionError("Fail hasAnnotation $element")
+
+    val find = element.findAnnotation<A>()
+    if (find == null || find.value != "O") throw AssertionError("Fail findAnnotation $element: $find")
+
+    val all = element.annotations
+    val findAll = element.findAnnotations<A>()
+    if (all != findAll) throw AssertionError("Fail findAnnotations $element: $all != $findAll")
+
+    if (all.any { it !is A })
+        throw AssertionError("Fail 1 $element: $all")
+    if (all.fold("") { acc, it -> acc + (it as A).value } != "OK")
+        throw AssertionError("Fail 2 $element: $all")
+}
+
+@Repeatable
+@Target(CLASS, FUNCTION, PROPERTY, TYPE)
+annotation class A(val value: String)
+
+@A("O") @A("") @A("K")
+fun f() {}
+
+@A("O") @A("") @A("") @A("K")
+var p = 1
+
+@A("O") @A("K")
+class Z
+
+fun g(): @A("O") @A("K") @A("") Unit {}
+
+fun box(): String {
+    check(::f)
+    check(::p)
+    check(Z::class)
+    check(::g.returnType)
+    return "OK"
+}