Svyatoslav Scherbina
d531df1643
This method can be useful when overriding a throwing Kotlin method in Swift or Obj-C. In this case, a user can call asError to wrap Kotlin exception to (NS)Error and then throw it to Kotlin, which will unwrap it back. ^KT-45127 Fixed
39 lines
993 B
Kotlin
39 lines
993 B
Kotlin
package throwableAsError
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import kotlin.coroutines.*
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class ThrowableAsError : Throwable()
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interface ThrowsThrowableAsError {
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@Throws(Throwable::class)
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fun throwError()
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}
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fun callAndCatchThrowableAsError(throwsThrowableAsError: ThrowsThrowableAsError): ThrowableAsError? {
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try {
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throwsThrowableAsError.throwError()
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} catch (e: ThrowableAsError) {
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return e
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}
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return null
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}
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interface ThrowsThrowableAsErrorSuspend {
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suspend fun throwError()
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}
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fun callAndCatchThrowableAsErrorSuspend(throwsThrowableAsErrorSuspend: ThrowsThrowableAsErrorSuspend): ThrowableAsError? {
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var throwable: ThrowableAsError? = null
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suspend {
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throwsThrowableAsErrorSuspend.throwError()
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}.startCoroutine(object : Continuation<Unit> {
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override val context = EmptyCoroutineContext
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override fun resumeWith(result: Result<Unit>) {
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throwable = result.exceptionOrNull() as? ThrowableAsError
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}
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})
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return throwable
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}
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