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// Copyright 2021 Ben Manes. All Rights Reserved.
//
// 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 com.github.benmanes.caffeine.cache;

import java.lang.ref.ReferenceQueue;
import java.util.Objects;

/**
 * WARNING: GENERATED CODE
 *
 * A cache entry that provides the following features:
 *
 * 

 *   StrongKeys
 *   
StrongValues
 * 
 *
 * @author [email protected] (Ben Manes)
 */
@SuppressWarnings({"unchecked", "PMD.UnusedFormalParameter", "MissingOverride", "NullAway"})
class PS extends Node implements NodeFactory {
  protected static final long KEY_OFFSET =
      UnsafeAccess.objectFieldOffset(
          PS.class, com.github.benmanes.caffeine.cache.LocalCacheFactory.KEY);

  protected static final long VALUE_OFFSET =
      UnsafeAccess.objectFieldOffset(
          PS.class, com.github.benmanes.caffeine.cache.LocalCacheFactory.VALUE);

  volatile K key;

  volatile V value;

  PS() {}

  PS(
      K key,
      ReferenceQueue keyReferenceQueue,
      V value,
      ReferenceQueue valueReferenceQueue,
      int weight,
      long now) {
    this(key, value, valueReferenceQueue, weight, now);
  }

  PS(Object keyReference, V value, ReferenceQueue valueReferenceQueue, int weight, long now) {
    UnsafeAccess.UNSAFE.putObject(this, KEY_OFFSET, keyReference);
    UnsafeAccess.UNSAFE.putObject(this, VALUE_OFFSET, value);
  }

  public final K getKey() {
    return (K) UnsafeAccess.UNSAFE.getObject(this, KEY_OFFSET);
  }

  public final Object getKeyReference() {
    return UnsafeAccess.UNSAFE.getObject(this, KEY_OFFSET);
  }

  public final V getValue() {
    return value;
  }

  public final Object getValueReference() {
    return UnsafeAccess.UNSAFE.getObject(this, VALUE_OFFSET);
  }

  public final void setValue(V value, ReferenceQueue referenceQueue) {
    UnsafeAccess.UNSAFE.putObject(this, VALUE_OFFSET, value);
  }

  public final boolean containsValue(Object value) {
    return Objects.equals(value, getValue());
  }

  public Node newNode(
      K key,
      ReferenceQueue keyReferenceQueue,
      V value,
      ReferenceQueue valueReferenceQueue,
      int weight,
      long now) {
    return new PS<>(key, keyReferenceQueue, value, valueReferenceQueue, weight, now);
  }

  public Node newNode(
      Object keyReference, V value, ReferenceQueue valueReferenceQueue, int weight, long now) {
    return new PS<>(keyReference, value, valueReferenceQueue, weight, now);
  }

  public final boolean isAlive() {
    Object key = getKeyReference();
    return (key != RETIRED_STRONG_KEY) && (key != DEAD_STRONG_KEY);
  }

  public final boolean isRetired() {
    return (getKeyReference() == RETIRED_STRONG_KEY);
  }

  public final void retire() {
    UnsafeAccess.UNSAFE.putObject(this, KEY_OFFSET, RETIRED_STRONG_KEY);
  }

  public final boolean isDead() {
    return (getKeyReference() == DEAD_STRONG_KEY);
  }

  public final void die() {
    UnsafeAccess.UNSAFE.putObject(this, VALUE_OFFSET, null);
    UnsafeAccess.UNSAFE.putObject(this, KEY_OFFSET, DEAD_STRONG_KEY);
  }
}