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) 2014, 2018, 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.Iterator; |
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import java.util.List; |
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import java.util.SortedMap; |
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import java.util.TreeMap; |
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import jdk.nashorn.internal.runtime.JSType; |
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import jdk.nashorn.internal.runtime.ScriptRuntime; |
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/** |
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* Filter to use for ArrayData where the length is not writable. |
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* The default behavior is just to ignore {@link ArrayData#setLength} |
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*/ |
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final class LengthNotWritableFilter extends ArrayFilter { |
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private final SortedMap<Long, Object> extraElements; //elements with index >= length |
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/** |
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* Constructor |
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* @param underlying array |
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*/ |
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LengthNotWritableFilter(final ArrayData underlying) { |
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this(underlying, new TreeMap<Long, Object>()); |
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} |
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private LengthNotWritableFilter(final ArrayData underlying, final SortedMap<Long, Object> extraElements) { |
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super(underlying); |
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this.extraElements = extraElements; |
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} |
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@Override |
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public ArrayData copy() { |
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return new LengthNotWritableFilter(underlying.copy(), new TreeMap<>(extraElements)); |
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} |
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@Override |
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public boolean has(final int index) { |
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return super.has(index) || extraElements.containsKey((long)index); |
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} |
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/** |
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* Set the length of the data array |
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* |
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* @param length the new length for the data array |
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*/ |
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@Override |
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public void setLength(final long length) { |
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//empty - setting length for a LengthNotWritableFilter is always a nop |
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} |
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@Override |
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public ArrayData ensure(final long index) { |
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return this; |
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} |
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@Override |
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public ArrayData slice(final long from, final long to) { |
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//return array[from...to), or array[from...length] if undefined, in this case not as we are an ArrayData |
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return new LengthNotWritableFilter(underlying.slice(from, to), extraElements.subMap(from, to)); |
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} |
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private boolean checkAdd(final long index, final Object value) { |
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if (index >= length()) { |
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extraElements.put(index, value); |
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return true; |
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} |
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return false; |
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} |
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private Object get(final long index) { |
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final Object obj = extraElements.get(index); |
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if (obj == null) { |
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return ScriptRuntime.UNDEFINED; |
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} |
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return obj; |
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} |
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@Override |
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public int getInt(final int index) { |
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if (index >= length()) { |
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return JSType.toInt32(get(index)); |
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} |
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return underlying.getInt(index); |
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} |
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@Override |
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public int getIntOptimistic(final int index, final int programPoint) { |
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if (index >= length()) { |
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return JSType.toInt32Optimistic(get(index), programPoint); |
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} |
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return underlying.getIntOptimistic(index, programPoint); |
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} |
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@Override |
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public double getDouble(final int index) { |
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if (index >= length()) { |
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return JSType.toNumber(get(index)); |
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} |
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return underlying.getDouble(index); |
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} |
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@Override |
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8035312: Various array and ScriptObject length issues for non writable length fields
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127 |
public double getDoubleOptimistic(final int index, final int programPoint) { |
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8035312: Various array and ScriptObject length issues for non writable length fields
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128 |
if (index >= length()) { |
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129 |
return JSType.toNumberOptimistic(get(index), programPoint); |
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130 |
} |
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131 |
return underlying.getDoubleOptimistic(index, programPoint); |
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132 |
} |
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133 |
|
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8035312: Various array and ScriptObject length issues for non writable length fields
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134 |
@Override |
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135 |
public Object getObject(final int index) { |
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8035312: Various array and ScriptObject length issues for non writable length fields
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|
136 |
if (index >= length()) { |
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8035312: Various array and ScriptObject length issues for non writable length fields
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|
137 |
return get(index); |
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8035312: Various array and ScriptObject length issues for non writable length fields
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|
138 |
} |
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139 |
return underlying.getObject(index); |
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|
140 |
} |
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|
141 |
|
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142 |
@Override |
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143 |
public ArrayData set(final int index, final Object value, final boolean strict) { |
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144 |
if (checkAdd(index, value)) { |
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|
145 |
return this; |
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|
146 |
} |
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147 |
underlying = underlying.set(index, value, strict); |
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|
148 |
return this; |
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|
149 |
} |
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|
150 |
|
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8035312: Various array and ScriptObject length issues for non writable length fields
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|
151 |
@Override |
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|
152 |
public ArrayData set(final int index, final int value, final boolean strict) { |
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|
153 |
if (checkAdd(index, value)) { |
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|
154 |
return this; |
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|
155 |
} |
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|
156 |
underlying = underlying.set(index, value, strict); |
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|
157 |
return this; |
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|
158 |
} |
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|
159 |
|
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|
160 |
@Override |
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|
161 |
public ArrayData set(final int index, final double value, final boolean strict) { |
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|
162 |
if (checkAdd(index, value)) { |
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|
163 |
return this; |
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|
164 |
} |
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|
165 |
underlying = underlying.set(index, value, strict); |
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|
166 |
return this; |
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|
167 |
} |
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8035312: Various array and ScriptObject length issues for non writable length fields
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changeset
|
168 |
|
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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changeset
|
169 |
@Override |
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|
170 |
public ArrayData delete(final int index) { |
47205
6ddad446ba23
8169233: LengthNotWritableFilter extraElements.remove(index) has no effect
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diff
changeset
|
171 |
extraElements.remove(ArrayIndex.toLongIndex(index)); |
27525
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8035312: Various array and ScriptObject length issues for non writable length fields
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|
172 |
underlying = underlying.delete(index); |
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8035312: Various array and ScriptObject length issues for non writable length fields
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changeset
|
173 |
return this; |
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8035312: Various array and ScriptObject length issues for non writable length fields
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diff
changeset
|
174 |
} |
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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diff
changeset
|
175 |
|
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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diff
changeset
|
176 |
@Override |
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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diff
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|
177 |
public ArrayData delete(final long fromIndex, final long toIndex) { |
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8035312: Various array and ScriptObject length issues for non writable length fields
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|
178 |
for (final Iterator<Long> iter = extraElements.keySet().iterator(); iter.hasNext();) { |
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8035312: Various array and ScriptObject length issues for non writable length fields
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|
179 |
final long next = iter.next(); |
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8035312: Various array and ScriptObject length issues for non writable length fields
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|
180 |
if (next >= fromIndex && next <= toIndex) { |
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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changeset
|
181 |
iter.remove(); |
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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diff
changeset
|
182 |
} |
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8035312: Various array and ScriptObject length issues for non writable length fields
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diff
changeset
|
183 |
if (next > toIndex) { //ordering guaranteed because TreeSet |
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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diff
changeset
|
184 |
break; |
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
lagergren
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diff
changeset
|
185 |
} |
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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diff
changeset
|
186 |
} |
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8035312: Various array and ScriptObject length issues for non writable length fields
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changeset
|
187 |
underlying = underlying.delete(fromIndex, toIndex); |
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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changeset
|
188 |
return this; |
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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diff
changeset
|
189 |
} |
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
lagergren
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diff
changeset
|
190 |
|
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
lagergren
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diff
changeset
|
191 |
@Override |
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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changeset
|
192 |
public Iterator<Long> indexIterator() { |
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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changeset
|
193 |
final List<Long> keys = computeIteratorKeys(); |
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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changeset
|
194 |
keys.addAll(extraElements.keySet()); //even if they are outside length this is fine |
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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changeset
|
195 |
return keys.iterator(); |
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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diff
changeset
|
196 |
} |
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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diff
changeset
|
197 |
|
e7d3c00b9fb8
8035312: Various array and ScriptObject length issues for non writable length fields
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changeset
|
198 |
} |