pyos
20ea77d55d
* If `toArray` is inherited from Java, it may take an argument or
return a value of a flexible type, which looks nullable in IR;
* The returned array may also have `out` variance of the type
argument;
* `Array<T>` is not the same as `Array<Any?>` if `T` is neither `Any`
nor `in Something`, so presence of `toArray(): Array<T>` does not
mean we don't need to generate a new `toArray`.
51 lines
1.3 KiB
Kotlin
Vendored
51 lines
1.3 KiB
Kotlin
Vendored
// TARGET_BACKEND: JVM
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// IGNORE_BACKEND_FIR: JVM_IR
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// WITH_RUNTIME
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// FILE: SingletonCollection.kt
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package test
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open class SingletonCollection<T>(val value: T) : AbstractCollection<T>() {
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override val size = 1
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override fun iterator(): Iterator<T> = listOf(value).iterator()
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protected override final fun toArray(): Array<Any?> =
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arrayOf<Any?>(value)
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protected override final fun <E> toArray(a: Array<E>): Array<E> {
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a[0] = value as E
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return a
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}
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}
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// FILE: DerivedSingletonCollection.kt
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package test2
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import test.*
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class DerivedSingletonCollection<T>(value: T) : SingletonCollection<T>(value)
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// FILE: box.kt
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import test.*
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import test2.*
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fun box(): String {
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val sc = SingletonCollection(42)
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val test1 = (sc as java.util.Collection<Int>).toArray()
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if (test1[0] != 42) return "Failed #1"
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val test2 = arrayOf<Any?>(0)
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(sc as java.util.Collection<Int>).toArray(test2)
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if (test2[0] != 42) return "Failed #2"
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val dsc = DerivedSingletonCollection(42)
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val test3 = (dsc as java.util.Collection<Int>).toArray()
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if (test3[0] != 42) return "Failed #3"
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val test4 = arrayOf<Any?>(0)
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(dsc as java.util.Collection<Int>).toArray(test4)
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if (test4[0] != 42) return "Failed #4"
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return "OK"
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} |