/*

  * Licensed to the Apache Software Foundation (ASF) under one or more

  * contributor license agreements.  See the NOTICE file distributed with

  * this work for additional information regarding copyright ownership.

  * The ASF licenses this file to You 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 org.apache.commons.functor.core.composite;

 import org.apache.commons.functor.Predicate;

 import org.apache.commons.functor.Procedure;

 /**

  * A {@link Procedure} implementation of a while loop. Given a {@link Predicate}

  * <i>c</i> and an {@link Procedure} <i>p</i>, {@link #run runs}

  * <code>while(c.test()) { p.run(); }</code>.

  * <p>

  * Note that although this class implements

  * {@link java.io.Serializable}, a given instance will

  * only be truly <code>Serializable</code> if all the

  * underlying functors are.  Attempts to serialize

  * an instance whose delegates are not all

  * <code>Serializable</code> will result in an exception.

  * </p>

  * @version $Revision: 1156320 $ $Date: 2011-08-10 21:14:50 +0200 (Wed, 10 Aug 2011) $

  * @author Herve Quiroz

  * @author Rodney Waldhoff

  */

 public class WhileDoProcedure extends AbstractLoopProcedure {

     /**

      * serialVersionUID declaration.

      */

     private static final long serialVersionUID = 8157389586531784657L;

     /**

      * Create a new WhileDoProcedure.

      * @param condition while

      * @param action to do

      */

     public WhileDoProcedure(Predicate condition, Procedure action) {

         super(condition, action);

     }

     /**

      * {@inheritDoc}

      */

     public void run() {

         while (getCondition().test()) {

             getAction().run();

         }

     }

     /**

      * {@inheritDoc}

      */

     public String toString() {

         return "WhileDoProcedure<while(" + getCondition() + ") do(" + getAction() + ")>";

     }

 }