| /* $Id$ |
| * |
| * 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.etch.util; |
| |
| import java.lang.reflect.Array; |
| import java.util.Iterator; |
| import java.util.NoSuchElementException; |
| |
| /** |
| * Iterator over a generic array. |
| */ |
| public class ArrayIterator implements Iterator<Object> |
| { |
| /** |
| * Constructs the ArrayIterator. |
| * @param array |
| */ |
| public ArrayIterator( Object array ) |
| { |
| if (array == null) |
| throw new NullPointerException( "array == null" ); |
| |
| if (!array.getClass().isArray()) |
| throw new IllegalArgumentException( "!array.getClass().isArray()" ); |
| |
| this.array = array; |
| length = Array.getLength( array ); |
| } |
| |
| private final Object array; |
| |
| private final int length; |
| |
| private int index = 0; |
| |
| public boolean hasNext() |
| { |
| return index < length; |
| } |
| |
| public Object next() |
| { |
| if (!hasNext()) |
| throw new NoSuchElementException(); |
| |
| return Array.get( array, index++ ); |
| } |
| |
| public void remove() |
| { |
| throw new UnsupportedOperationException(); |
| } |
| } |