Alexander Udalov
0a6d010d1c
- Unwrap Kotlin-repeatable annotations (with implicit container) - Introduce `KAnnotatedElement.findAnnotations` to find instances of repeated annotations #KT-12794
45 lines
1.1 KiB
Kotlin
Vendored
45 lines
1.1 KiB
Kotlin
Vendored
// !LANGUAGE: +RepeatableAnnotations
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// !USE_EXPERIMENTAL: kotlin.ExperimentalStdlibApi
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// TARGET_BACKEND: JVM_IR
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// JVM_TARGET: 1.8
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// FULL_JDK
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// WITH_REFLECT
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// FILE: box.kt
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import kotlin.reflect.full.findAnnotation
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import kotlin.reflect.full.findAnnotations
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import kotlin.reflect.full.hasAnnotation
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@A("O")
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@A("")
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@A("K")
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fun f() {}
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fun box(): String {
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val element = ::f
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if (element.hasAnnotation<A>()) return "Fail hasAnnotation $element"
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val find = element.findAnnotation<A>()
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if (find != null) return "Fail findAnnotation $element: $find"
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val all = (element.annotations.single() as A.Container).value.asList()
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val findAll = element.findAnnotations<A>()
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if (all != findAll) throw AssertionError("Fail findAnnotations $element: $all != $findAll")
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return all.fold("") { acc, it -> acc + it.value }
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}
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// FILE: A.java
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import java.lang.annotation.*;
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@Repeatable(A.Container.class)
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@Retention(RetentionPolicy.RUNTIME)
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public @interface A {
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String value();
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@Retention(RetentionPolicy.RUNTIME)
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public @interface Container {
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A[] value();
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}
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}
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