view src/clojure/lang/SeqIterator.java @ 10:ef7dbbd6452c

added clojure source goodness
author Robert McIntyre <rlm@mit.edu>
date Sat, 21 Aug 2010 06:25:44 -0400
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1 /**
2 * Copyright (c) Rich Hickey. All rights reserved.
3 * The use and distribution terms for this software are covered by the
4 * Eclipse Public License 1.0 (http://opensource.org/licenses/eclipse-1.0.php)
5 * which can be found in the file epl-v10.html at the root of this distribution.
6 * By using this software in any fashion, you are agreeing to be bound by
7 * the terms of this license.
8 * You must not remove this notice, or any other, from this software.
9 **/
11 /* rich Jun 19, 2007 */
13 package clojure.lang;
15 import java.util.Iterator;
16 import java.util.NoSuchElementException;
18 public class SeqIterator implements Iterator{
20 ISeq seq;
22 public SeqIterator(ISeq seq){
23 this.seq = seq;
24 }
26 public boolean hasNext(){
27 return seq != null;
28 }
30 public Object next() throws NoSuchElementException {
31 if(seq == null)
32 throw new NoSuchElementException();
33 Object ret = RT.first(seq);
34 seq = RT.next(seq);
35 return ret;
36 }
38 public void remove(){
39 throw new UnsupportedOperationException();
40 }
41 }