xomrk/highlevel-try-finally.kt
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[history] Crossreturn check with error

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This commit is contained in:
Andrew Golovashevich 2025-02-26 00:55:35 +03:00
parent 1b9bf5e49f
commit fc4bd9eb89
1 changed files with 12 additions and 11 deletions
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21
src/commonMain/kotlin/ru/landgrafhomyak/utility/highlevel_try_finally/safe_autoclose.kt
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@ -1,18 +1,16 @@
package ru.landgrafhomyak.utility.highlevel_try_finally
import kotlin.contracts.InvocationKind
import kotlin.contracts.contract
inline fun <R> safeAutoClose(onError: () -> Unit = {}, onSuccess: () -> Unit = {}, action: () -> R): R {
contract {
callsInPlace(action, InvocationKind.EXACTLY_ONCE)
callsInPlace(onError, InvocationKind.AT_MOST_ONCE)
callsInPlace(onSuccess, InvocationKind.EXACTLY_ONCE)
}
fun <R> safeAutoClose(
onError: () -> Unit = {},
onSuccess: () -> Unit = {},
action: () -> R
): R {
val ret: R
var wasError = false
var crossReturned = true
try {
ret = action()
crossReturned = false
} catch (e1: Throwable) {
wasError = true
try {
@ -22,8 +20,11 @@ inline fun <R> safeAutoClose(onError: () -> Unit = {}, onSuccess: () -> Unit = {
}
throw e1
} finally {
if (!wasError)
if (!wasError) {
if (crossReturned)
throw Error("crossreturn")
onSuccess()
}
}
return ret
}