/**
 * Copyright (c) 2014, the Railo Company Ltd.
 * Copyright (c) 2015, Lucee Assosication Switzerland
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either 
 * version 2.1 of the License, or (at your option) any later version.
 * 
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 * 
 * You should have received a copy of the GNU Lesser General Public 
 * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
 * 
 */
package lucee.runtime.util;

import java.util.Enumeration;
import java.util.Iterator;
import java.util.Map;
import java.util.Set;

/**
 * class to make a enumaration from a ser, map or iterator
 */
public final class EnumerationWrapper<E> implements Enumeration<E> {
		
		private Iterator<E> it;

		/**
		 * @param map Constructor with a Map
		 */
		public EnumerationWrapper(Map<E,?> map) {
			this(map.keySet().iterator());
		}
		
		/**
		 * @param set Constructor with a Set
		 */
		public EnumerationWrapper(Set<E> set) {
			this(set.iterator());
		}

		/**
		 * Constructor of the class
		 * @param objs
		 */
		public EnumerationWrapper(E[] objs) {
			this(new ArrayIterator(objs));
		}
		
		/**
		 * @param it Constructor with a iterator
		 */
		public EnumerationWrapper(Iterator<E> it) {
			this.it=it;
		}
		

		/**
		 * @see java.util.Enumeration#hasMoreElements()
		 */
		@Override
		public boolean hasMoreElements() {
			return it.hasNext();
		}

		/**
		 * @see java.util.Enumeration#nextElement()
		 */
		@Override
		public E nextElement() {
			return it.next();
		}
		
	}