dev.tauri.choam.async.AsyncStack.scala Maven / Gradle / Ivy
/*
* SPDX-License-Identifier: Apache-2.0
* Copyright 2016-2024 Daniel Urban and contributors listed in NOTICE.txt
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package dev.tauri.choam
package async
import data.Stack
abstract class AsyncStack[F[_], A] {
def push: Rxn[A, Unit]
def pop: F[A]
def tryPop: Axn[Option[A]]
}
object AsyncStack {
final def treiberStack[F[_], A](implicit F: AsyncReactive[F]): Axn[AsyncStack[F, A]] =
Stack.treiberStack[A].flatMapF(fromSyncStack[F, A])
final def eliminationStack[F[_], A](implicit F: AsyncReactive[F]): Axn[AsyncStack[F, A]] =
Stack.eliminationStack[A].flatMapF(fromSyncStack[F, A])
private[this] final def fromSyncStack[F[_], A](stack: Stack[A])(implicit F: AsyncReactive[F]): Axn[AsyncStack[F, A]] = {
F.waitList(
syncGet = stack.tryPop,
syncSet = stack.push
).map { wl =>
new AsyncStack[F, A] {
final override def push: A =#> Unit =
wl.set
final override def pop: F[A] =
wl.asyncGet
final override def tryPop: Axn[Option[A]] =
stack.tryPop
}
}
}
}