LanguageUtilities/closeable-state.kt
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Replacement of AutoCloseable.use{}

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Andrew Golovashevich 2025-08-24 02:05:20 +03:00
parent 826f286404
commit 999ff63ccf
1 changed files with 21 additions and 1 deletions
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src/commonMain/kotlin/ru/landgrafhomyak/utility/closeable_state_1/children_scopes.kt
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@ -7,6 +7,23 @@ import kotlin.contracts.contract
import kotlin.jvm.JvmName import kotlin.jvm.JvmName
import ru.landgrafhomyak.utility.highlevel_try_finally.safeAutoClose1 import ru.landgrafhomyak.utility.highlevel_try_finally.safeAutoClose1
@OptIn(ManualStateManipulation::class)
public inline fun <S : CloseableState, R> autoClosed(
constructor: () -> S,
scope: (S) -> R,
): R {
contract {
callsInPlace(constructor, InvocationKind.EXACTLY_ONCE)
callsInPlace(scope, InvocationKind.EXACTLY_ONCE)
}
val state = constructor()
return safeAutoClose1(
action = { scope(state) },
finally = state::close
)
}
@OptIn(ManualStateManipulation::class) @OptIn(ManualStateManipulation::class)
public inline fun <R> CloseableState.childAC( public inline fun <R> CloseableState.childAC(
constructor: () -> CloseableState.AllowsConcurrency = ::UsagesCounter, constructor: () -> CloseableState.AllowsConcurrency = ::UsagesCounter,
@ -48,5 +65,8 @@ public inline fun <R> CloseableState.ExternallySynchronized.closeableWrapper(
callsInPlace(constructor, InvocationKind.EXACTLY_ONCE) callsInPlace(constructor, InvocationKind.EXACTLY_ONCE)
callsInPlace(scope, InvocationKind.EXACTLY_ONCE) callsInPlace(scope, InvocationKind.EXACTLY_ONCE)
} }
return CloseableStateCloseableWrapper(this, constructor()).use(scope) return autoClosed(
constructor = { CloseableStateCloseableWrapper(this, constructor()) },
scope = scope
)
} }