/*
    * Copyright (C) 2011 The Guava Authors
    *
    * 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 java.util.concurrent.atomic;
  
  /**
   * GWT emulated version of {@link AtomicLong}.  It's a thin wrapper
   * around the primitive {@code long}.
   *
   * @author Jige Yu
   */
  public class AtomicLong extends Number implements java.io.Serializable {
  
    private long value;
  
    public AtomicLong(long initialValue) {
      this.value = initialValue;
    }
  
    public AtomicLong() {
    }
  
    public final long get() {
      return value;
    }
  
    public final void set(long newValue) {
      value = newValue;
    }
  
    public final void lazySet(long newValue) {
      set(newValue);
    }
  
    public final long getAndSet(long newValue) {
      long current = value;
      value = newValue;
      return current;
    }
  
    public final boolean compareAndSet(long expect, long update) {
      if (value == expect) {
        value = update;
        return true;
      } else {
        return false;
      }
    }
  
    public final long getAndIncrement() {
      return value++;
    }
  
    public final long getAndDecrement() {
      return value--;
    }
  
    public final long getAndAdd(long delta) {
      long current = value;
      value += delta;
      return current;
    }
  
    public final long incrementAndGet() {
      return ++value;
    }
  
    public final long decrementAndGet() {
      return --value;
    }
  
    public final long addAndGet(long delta) {
      value += delta;
      return value;
    }
  
    @Override public String toString() {
      return Long.toString(value);
    }
  
    public int intValue() {
      return (int) value;
    }
  
    public long longValue() {
      return value;
   }
 
   public float floatValue() {
     return (float) value;
   }
 
   public double doubleValue() {
     return (double) value;
   }
 }