Svyatoslav Kuzmich
36 lines
928 B
Kotlin
Vendored
36 lines
928 B
Kotlin
Vendored
// !LANGUAGE: +InlineClasses
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// IGNORE_BACKEND: JVM_IR
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inline class SuccessOrFailure<out T>(val value: Any?) {
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val isFailure: Boolean get() = value is Failure
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public companion object {
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public inline fun <T> success(value: T): SuccessOrFailure<T> =
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SuccessOrFailure(value)
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public inline fun <T> failure(exception: Throwable): SuccessOrFailure<T> =
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SuccessOrFailure(Failure(exception))
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}
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class Failure (
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val exception: Throwable
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)
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}
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inline fun <R> runCatching(block: () -> R): SuccessOrFailure<R> {
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return try {
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SuccessOrFailure.success(block())
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} catch (e: Throwable) {
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SuccessOrFailure.failure(e)
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}
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}
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class Box<T>(val x: T)
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fun box(): String {
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val r = runCatching { TODO() }
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val b = Box(r)
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if (r.isFailure != b.x.isFailure || !r.isFailure) return "Fail: r=${r.isFailure}; b.x=${b.x.isFailure}"
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return "OK"
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} |