'close' method moved to separate class; autoClosed scope

.gitignore

@@ -7,3 +7,4 @@ build/
 /out/
 /gradlew*
 .kotlin/
+/kotlin-js-store

src/commonMain/kotlin/ru/landrafhomyak/utility/reference_counter/CloseableReferenceCounter.kt

@@ -1,90 +1,29 @@
-@file:OptIn(ExperimentalContracts::class)
-
 package ru.landrafhomyak.utility.reference_counter
 
-import kotlin.contracts.ExperimentalContracts
-import kotlin.contracts.InvocationKind
-import kotlin.contracts.contract
 import kotlin.jvm.JvmName
-import ru.landgrafhomyak.utility.highlevel_try_finally.safeAutoClose1
+import kotlin.jvm.JvmStatic
-import ru.landgrafhomyak.utility.highlevel_try_finally.safeAutoClose2
 
-public class CloseableReferenceCounter {
+public class CloseableReferenceCounter : MayBeClosedReferenceCounter {
-	private val _value: _AtomicLong
+	public constructor(errMessageClosed: String) : super(errMessageClosed)
-	private val _errMessageClosed: String
-
-	public constructor(errMessageClosed: String) {
-		_Platform.jvm_assertNotNull(errMessageClosed, "param: errMessageClosed")
-		this._errMessageClosed = errMessageClosed
-		this._value = _AtomicLong(0L)
-	}
-
-	@JvmName("throwClosed")
-	public fun throwClosed() {
-		throw IllegalStateException(this._errMessageClosed)
-	}
-
-	@JvmName("incref")
-	public fun incref() {
-		this._value.update { o ->
-			if (o < 0) this.throwClosed()
-			return@update o + 1
-		}
-	}
-
-	@JvmName("tryIncref\$kt")
-	public inline fun <R> tryIncref(block: () -> R): R {
-		contract {
-			callsInPlace(block, InvocationKind.EXACTLY_ONCE)
-		}
-		this.incref()
-		return safeAutoClose2(onError = this::decref, action = block)
-	}
-
-	@JvmName("assertNotClosed")
-	public fun assertNotClosed() {
-		if (this._value.get() < 0) this.throwClosed()
-	}
-
-	@JvmName("decref")
-	public fun decref() {
-		this._value.update(Long::dec)
-	}
-
-	@JvmName("tryDecref\$kt")
-	public inline fun <R> tryDecref(block: () -> R): R {
-		contract {
-			callsInPlace(block, InvocationKind.EXACTLY_ONCE)
-		}
-		this.assertNotClosed()
-		return safeAutoClose2(onSuccess = this::decref, action = block)
-	}
-
-	@get:JvmName("isClosed")
-	public val isClosed: Boolean get() = this._value.get() < 0
 
+	@Suppress("INAPPLICABLE_JVM_NAME")
 	@JvmName("close")
-	public fun close(errExistRefs: String) {
+	public override fun close(errExistRefs: String) {
+		super.close(errExistRefs)
+	}
+
+	public companion object {
+		@JvmStatic
+		@JvmName("autoClosed")
+		public fun <R> autoClosed(errMessageClosed: String, errExistRefs: String, scope: (MayBeClosedReferenceCounter) -> R): R {
+			_Platform.jvm_assertNotNull(errMessageClosed, "param: errMessageClosed")
 			_Platform.jvm_assertNotNull(errExistRefs, "param: errExistRefs")
-		val state = this._value.compareAndExchange(0, _Misc.CLOSED_STATE_VALUE)
+			_Platform.jvm_assertNotNull(scope, "param: scope")
-		when {
-			state > 0 -> throw IllegalStateException(errExistRefs)
-			state < 0 -> this.throwClosed()
-		}
-	}
 
-	@JvmName("withRef\$kt")
+			val refcnt = CloseableReferenceCounter(errMessageClosed)
-	public inline fun <R> withRef(protected: () -> R): R {
+			val ret = scope(refcnt)
-		this.incref()
+			refcnt.close(errExistRefs)
-		return safeAutoClose1(finally = this::decref, action = protected)
+			return ret
 		}
-
-	override fun toString(): String {
-		val refcntCached = this._value.get()
-		@Suppress("LiftReturnOrAssignment")
-		if (refcntCached < 0)
-			return "<ref counter [closed]>"
-		else
-			return "<ref counter [${refcntCached}]>"
 	}
 }

src/commonMain/kotlin/ru/landrafhomyak/utility/reference_counter/MayBeClosedReferenceCounter.kt

@@ -0,0 +1,91 @@
+@file:OptIn(ExperimentalContracts::class)
+
+package ru.landrafhomyak.utility.reference_counter
+
+import kotlin.contracts.ExperimentalContracts
+import kotlin.contracts.InvocationKind
+import kotlin.contracts.contract
+import kotlin.jvm.JvmName
+import ru.landgrafhomyak.utility.highlevel_try_finally.safeAutoClose1
+import ru.landgrafhomyak.utility.highlevel_try_finally.safeAutoClose2
+
+public sealed class MayBeClosedReferenceCounter {
+	private val _value: _AtomicLong
+	private val _errMessageClosed: String
+
+	protected constructor(errMessageClosed: String) {
+		_Platform.jvm_assertNotNull(errMessageClosed, "param: errMessageClosed")
+		this._errMessageClosed = errMessageClosed
+		this._value = _AtomicLong(0L)
+	}
+
+	@JvmName("throwClosed")
+	public fun throwClosed() {
+		throw IllegalStateException(this._errMessageClosed)
+	}
+
+	@JvmName("incref")
+	public fun incref() {
+		this._value.update { o ->
+			if (o < 0) this.throwClosed()
+			return@update o + 1
+		}
+	}
+
+	@JvmName("tryIncref\$kt")
+	public inline fun <R> tryIncref(block: () -> R): R {
+		contract {
+			callsInPlace(block, InvocationKind.EXACTLY_ONCE)
+		}
+		this.incref()
+		return safeAutoClose2(onError = this::decref, action = block)
+	}
+
+	@JvmName("assertNotClosed")
+	public fun assertNotClosed() {
+		if (this._value.get() < 0) this.throwClosed()
+	}
+
+	@JvmName("decref")
+	public fun decref() {
+		this._value.update(Long::dec)
+	}
+
+	@JvmName("tryDecref\$kt")
+	public inline fun <R> tryDecref(block: () -> R): R {
+		contract {
+			callsInPlace(block, InvocationKind.EXACTLY_ONCE)
+		}
+		this.assertNotClosed()
+		return safeAutoClose2(onSuccess = this::decref, action = block)
+	}
+
+	@get:JvmName("isClosed")
+	public val isClosed: Boolean get() = this._value.get() < 0
+
+	@Suppress("INAPPLICABLE_JVM_NAME")
+	@JvmName("close")
+	protected open fun close(errExistRefs: String) {
+		_Platform.jvm_assertNotNull(errExistRefs, "param: errExistRefs")
+		val state = this._value.compareAndExchange(0, _Misc.CLOSED_STATE_VALUE)
+		when {
+			state > 0 -> throw IllegalStateException(errExistRefs)
+			state < 0 -> this.throwClosed()
+		}
+	}
+
+	@JvmName("withRef\$kt")
+	public inline fun <R> withRef(protected: () -> R): R {
+		this.incref()
+		return safeAutoClose1(finally = this::decref, action = protected)
+	}
+
+	override fun toString(): String {
+		val refcntCached = this._value.get()
+		@Suppress("LiftReturnOrAssignment")
+		if (refcntCached < 0)
+			return "<ref counter [closed]>"
+		else
+			return "<ref counter [${refcntCached}]>"
+	}
+}