Coverage report

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org.apache.commons.jexl.util.ArrayIterator |
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1 |  |
     /*
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      * Copyright 1999-2001,2004 The Apache Software Foundation.
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      *
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      * Licensed under the Apache License, Version 2.0 (the "License");
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      * you may not use this file except in compliance with the License.
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      * You may obtain a copy of the License at
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      *
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      *      http://www.apache.org/licenses/LICENSE-2.0
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      *
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      * Unless required by applicable law or agreed to in writing, software
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      * distributed under the License is distributed on an "AS IS" BASIS,
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      * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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      * See the License for the specific language governing permissions and
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      * limitations under the License.
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      */
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     package org.apache.commons.jexl.util;
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     import java.util.Iterator;
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     import java.util.NoSuchElementException;
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     import java.lang.reflect.Array;
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     /**
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      *  <p>
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      *  An Iterator wrapper for an Object[]. This will
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      *  allow us to deal with all array like structures
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      *  in a consistent manner.
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      *  </p>
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      *  <p>
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      *  WARNING : this class's operations are NOT synchronized.
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      *  It is meant to be used in a single thread, newly created
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      *  for each use in the #foreach() directive.
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      *  If this is used or shared, synchronize in the
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      *  next() method.
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      *  </p>
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      *
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      * @author <a href="mailto:jvanzyl@apache.org">Jason van Zyl</a>
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      * @author <a href="mailto:geirm@apache.org">Geir Magnusson Jr.</a>
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      * @version $Id: ArrayIterator.java,v 1.3 2004/02/28 13:45:21 yoavs Exp $
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      */
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     public class ArrayIterator implements Iterator
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     {
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         /**
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          * The objects to iterate.
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          */
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         private Object array;
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         /**
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          * The current position and size in the array.
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          */
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         private int pos;
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         private int size;
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         /**
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          * Creates a new iterator instance for the specified array.
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          *
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          * @param array The array for which an iterator is desired.
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          */
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         public ArrayIterator(Object array)
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         {
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             /*
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              * if this isn't an array, then throw.  Note that this is
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              * for internal use - so this should never happen - if it does
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              *  we screwed up.
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              */
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             if ( !array.getClass().isArray() )
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             {
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                 throw new IllegalArgumentException(
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                     "Programmer error : internal ArrayIterator invoked w/o array");
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             }
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             this.array = array;
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             pos = 0;
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             size = Array.getLength( this.array );
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         }
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         /**
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          * Move to next element in the array.
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          *
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          * @return The next object in the array.
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          */
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         public Object next()
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         {
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             if (pos < size )
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                 return Array.get( array, pos++);
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             /*
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              *  we screwed up...
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              */
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             throw new NoSuchElementException("No more elements: " + pos +
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                                              " / " + size);
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         }
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         /**
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          * Check to see if there is another element in the array.
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          *
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          * @return Whether there is another element.
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          */
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         public boolean hasNext()
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         {
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             return (pos < size );
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         }
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         /**
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          * No op--merely added to satify the <code>Iterator</code> interface.
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          */
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         public void remove()
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         {
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             throw new UnsupportedOperationException();
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         }
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     }

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