author | hannesw |
Wed, 21 Mar 2018 16:55:34 +0100 | |
changeset 49275 | c639a6b33c5c |
parent 47216 | 71c04702a3d5 |
permissions | -rw-r--r-- |
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/* |
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* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package jdk.nashorn.internal.runtime.arrays; |
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import java.util.NoSuchElementException; |
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import jdk.nashorn.internal.runtime.JSType; |
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import jdk.nashorn.internal.runtime.ScriptObject; |
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/** |
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* Iterator over a map |
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*/ |
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class ScriptObjectIterator extends ArrayLikeIterator<Object> { |
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protected final ScriptObject obj; |
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private final long length; |
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ScriptObjectIterator(final ScriptObject obj, final boolean includeUndefined) { |
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super(includeUndefined); |
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this.obj = obj; |
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this.length = JSType.toUint32(obj.getLength()); |
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this.index = 0; |
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} |
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protected boolean indexInArray() { |
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return index < length; |
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} |
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@Override |
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public long getLength() { |
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return length; |
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} |
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@Override |
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public boolean hasNext() { |
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if (length == 0L) { |
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return false; //return empty string if toUint32(length) == 0 |
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} |
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while (indexInArray()) { |
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if (obj.has(index) || includeUndefined) { |
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break; |
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} |
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bumpIndex(); |
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} |
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return indexInArray(); |
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} |
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@Override |
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public Object next() { |
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if (indexInArray()) { |
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return obj.get(bumpIndex()); |
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} |
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throw new NoSuchElementException(); |
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} |
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} |