Ptidej-v5.2-master/JCT Utils/src/jct/util/misc/Counter.java
/**
 * @author Mathieu Lemoine
 * @created 2009-05-06 (水)
 * 
 * Licensed under 3-clause BSD License:
 * Copyright © 2009, Mathieu Lemoine
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *  * Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *  * Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *  * Neither the name of Mathieu Lemoine nor the
 *    names of contributors may be used to endorse or promote products
 *    derived from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY Mathieu Lemoine ''AS IS'' AND ANY
 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL Mathieu Lemoine BE LIABLE FOR ANY
 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package jct.util.misc;

import jct.util.reference.StrongReference;

/**
 * This class is a simple Counter.
 * 
 * @author Mathieu Lemoine
 */
public class Counter extends StrongReference<Integer> {
	/**
	 * 
	 */
	private static final long serialVersionUID = -6942659065309751586L;

	public Counter() {
		super((Integer) null);
	}

	public Counter(int start) {
		super(start);
	}

	public void reset() {
		this.set(0);
	}

	public void inc() {
		if (null != this.get())
			this.set(this.get() + 1);
	}

	public Integer postfixedInc() {
		final Integer previousValue = this.get();
		this.inc();
		return previousValue;
	}

	public Integer prefixedInc() {
		this.inc();
		return this.get();
	}
}
