text: // ktlint-disable filename
  /*
   * Copyright (C) 2018 Touchlab, Inc.
   *
   * 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 co.touchlab.stately.concurrency
  
  actual open class ThreadLocalRef<T> actual constructor() {
      private val threadLocalId = ThreadLocalIdCounter.nextThreadLocalId()
  
      actual fun remove() {
          ThreadLocalState.threadLocalMap.remove(threadLocalId)
      }
  
      actual fun get(): T? {
          return if (ThreadLocalState.threadLocalMap.containsKey(threadLocalId)) {
              ThreadLocalState.threadLocalMap.get(threadLocalId) as T
          } else {
              null
          }
      }
  
      actual fun set(value: T?) {
          if (value == null) {
              remove()
          } else {
              ThreadLocalState.threadLocalMap.put(threadLocalId, value)
          }
      }
  }
  
  @ThreadLocal
  private object ThreadLocalState {
      val threadLocalMap = HashMap<Int, Any>()
  }
  
  private object ThreadLocalIdCounter {
      val threadLocalId = AtomicInt(0)
      fun nextThreadLocalId(): Int = threadLocalId.addAndGet(1)
  }
  