vladislav.grechko
33 lines
609 B
Kotlin
Vendored
33 lines
609 B
Kotlin
Vendored
// WITH_STDLIB
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// WITH_COROUTINES
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// JVM_ABI_K1_K2_DIFF: KT-62845
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import kotlin.contracts.*
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import kotlin.coroutines.*
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import helpers.*
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@ExperimentalContracts
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public fun <T> runBlocking(block: suspend () -> T): T {
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contract {
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callsInPlace(block, InvocationKind.EXACTLY_ONCE)
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}
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var res: T? = null
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suspend {
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res = block()
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}.startCoroutine(EmptyContinuation)
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return res!!
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}
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sealed class S {
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class Z : S() {
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fun f(): String = "OK"
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}
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}
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val z: S = S.Z()
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@ExperimentalContracts
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fun box(): String = when (val w = z) {
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is S.Z -> runBlocking { w.f() }
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}
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