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/*
* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package jdk.nashorn.internal.runtime.arrays;
import jdk.nashorn.internal.runtime.ScriptObject;
/**
* Reverse iterator over a NativeArray
*/
public final class ReverseArrayIterator extends ArrayIterator {
/**
* Constructor
* @param array array to iterate over
* @param includeUndefined should undefined elements be included in iteration
*/
public ReverseArrayIterator(final ScriptObject array, final boolean includeUndefined) {
super(array, includeUndefined);
this.index = (int) (array.getArray().length() - 1);
}
@Override
public boolean isReverse() {
return true;
}
@Override
protected boolean indexInArray() {
return index >= 0;
}
@Override
protected int bumpIndex() {
return index--;
}
}
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