Mikhail Glukhikh
34 lines
1.3 KiB
Kotlin
Vendored
34 lines
1.3 KiB
Kotlin
Vendored
// IGNORE_BACKEND: JS
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private object EmptyList : List<Nothing> {
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override fun contains(element: Nothing): Boolean = false
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override fun containsAll(elements: Collection<Nothing>): Boolean = elements.isEmpty()
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override fun indexOf(element: Nothing): Int = -2
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override fun lastIndexOf(element: Nothing): Int = -2
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override val size: Int get() = 0
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override fun isEmpty(): Boolean = true
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override fun iterator(): Iterator<Nothing> = throw UnsupportedOperationException()
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override fun get(index: Int): Nothing = throw UnsupportedOperationException()
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override fun listIterator(): ListIterator<Nothing> = throw UnsupportedOperationException()
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override fun listIterator(index: Int): ListIterator<Nothing> = throw UnsupportedOperationException()
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override fun subList(fromIndex: Int, toIndex: Int): List<Nothing> = throw UnsupportedOperationException()
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}
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fun box(): String {
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val n = EmptyList as List<String>
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if (n.contains("")) return "fail 1"
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if (n.indexOf("") != -1) return "fail 2"
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if (n.lastIndexOf("") != -1) return "fail 3"
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val nullAny = EmptyList as List<Any?>
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if (nullAny.contains(null)) return "fail 4"
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if (nullAny.indexOf(null) != -1) return "fail 5"
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if (nullAny.lastIndexOf(null) != -1) return "fail 6"
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return "OK"
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}
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