Evgeniy.Zhelenskiy
48 lines
1.4 KiB
Kotlin
Vendored
48 lines
1.4 KiB
Kotlin
Vendored
// WITH_STDLIB
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// WORKS_WHEN_VALUE_CLASS
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// LANGUAGE: +ValueClasses
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class Outer<X>(val x: X) {
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inner class Inner<Y>(val y: Y) {
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val hasNull = x == null || y == null
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fun outerX() = x
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override fun equals(other: Any?): Boolean =
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other is Outer<*>.Inner<*> &&
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other.outerX() == x &&
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other.y == y
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}
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}
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OPTIONAL_JVM_INLINE_ANNOTATION
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value class Z1<X, Y>(val x: Outer<X>.Inner<Y>)
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OPTIONAL_JVM_INLINE_ANNOTATION
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value class Z2<X, Y>(val z: Z1<X, Y>)
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OPTIONAL_JVM_INLINE_ANNOTATION
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value class ZN<X, Y>(val z: Z1<X, Y>?)
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fun <X, Y> wrap1(xy : Outer<X>.Inner<Y>): Z1<X, Y>? = if (xy.hasNull) null else Z1(xy)
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fun <X, Y> wrap2(xy : Outer<X>.Inner<Y>): Z2<X, Y>? = if (xy.hasNull) null else Z2(Z1(xy))
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fun <X, Y> wrapN(xy : Outer<X>.Inner<Y>): ZN<X, Y>? = if (xy.hasNull) null else ZN(Z1(xy))
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fun box(): String {
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val n = Outer(null).Inner("a")
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val a = Outer("a").Inner("a")
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if (wrap1(n) != null) throw AssertionError()
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if (wrap1(a) == null) throw AssertionError()
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if (wrap1(a)!!.x != a) throw AssertionError()
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if (wrap2(n) != null) throw AssertionError()
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if (wrap2(a) == null) throw AssertionError()
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if (wrap2(a)!!.z.x != a) throw AssertionError()
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if (wrapN(n) != null) throw AssertionError()
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if (wrapN(a) == null) throw AssertionError()
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if (wrapN(a)!!.z!!.x != a) throw AssertionError()
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return "OK"
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} |