Pavel V. Talanov
35 lines
755 B
Kotlin
35 lines
755 B
Kotlin
class Delegate<T>(var inner: T) {
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fun get(t: Any?, p: PropertyMetadata): T = inner
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fun set(t: Any?, p: PropertyMetadata, i: T) { inner = i }
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}
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class Foo (val f: Int) {
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companion object {
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val A: Foo by Delegate(Foo(11))
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var B: Foo by Delegate(Foo(11))
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}
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}
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trait FooTrait {
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companion object {
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val A: Foo by Delegate(Foo(11))
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var B: Foo by Delegate(Foo(11))
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}
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}
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fun box() : String {
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if (Foo.A.f != 11) return "fail 1"
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if (Foo.B.f != 11) return "fail 2"
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Foo.B = Foo(12)
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if (Foo.B.f != 12) return "fail 3"
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if (FooTrait.A.f != 11) return "fail 4"
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if (FooTrait.B.f != 11) return "fail 5"
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FooTrait.B = Foo(12)
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if (FooTrait.B.f != 12) return "fail 6"
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return "OK"
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} |