1/*
2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.  Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26package jdk.nashorn.internal.runtime.arrays;
27
28import java.lang.reflect.Array;
29
30/**
31  * Iterator over a Java List.
32 */
33class JavaArrayIterator extends ArrayLikeIterator<Object> {
34
35    /** Array to iterate over */
36    protected final Object array;
37
38    /** length of array */
39    protected final long length;
40
41    /**
42     * Constructor
43     * @param array array to iterate over
44     * @param includeUndefined should undefined elements be included in iteration
45     */
46    protected JavaArrayIterator(final Object array, final boolean includeUndefined) {
47        super(includeUndefined);
48        assert array.getClass().isArray() : "expecting Java array object";
49        this.array = array;
50        this.length = Array.getLength(array);
51    }
52
53    /**
54     * Is the current index still inside the array
55     * @return true if inside the array
56     */
57    protected boolean indexInArray() {
58        return index < length;
59    }
60
61    @Override
62    public Object next() {
63        return Array.get(array, (int)bumpIndex());
64    }
65
66    @Override
67    public long getLength() {
68        return length;
69    }
70
71    @Override
72    public boolean hasNext() {
73        return indexInArray();
74    }
75
76    @Override
77    public void remove() {
78        throw new UnsupportedOperationException("remove");
79    }
80}
81