1 /* 2 * Copyright (c) 2014, 2018, 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 26 package jdk.nashorn.internal.runtime.arrays; 27 28 import static jdk.nashorn.internal.runtime.ECMAErrors.typeError; 29 import jdk.nashorn.internal.objects.Global; 30 import jdk.nashorn.internal.runtime.ScriptRuntime; 31 32 /** 33 * Filter class that wrap arrays that have been tagged non extensible 34 */ 35 final class NonExtensibleArrayFilter extends ArrayFilter { 36 37 /** 38 * Constructor 39 * @param underlying array 40 */ 41 NonExtensibleArrayFilter(final ArrayData underlying) { 42 super(underlying); 43 } 44 45 @Override 46 public ArrayData copy() { 47 return new NonExtensibleArrayFilter(underlying.copy()); 48 } 49 50 @Override 51 public ArrayData slice(final long from, final long to) { 52 return new NonExtensibleArrayFilter(underlying.slice(from, to)); 53 } 54 55 private ArrayData extensionCheck(final boolean strict, final int index) { 56 if (!strict) { 57 return this; 58 } 59 throw typeError(Global.instance(), "object.non.extensible", String.valueOf(index), ScriptRuntime.safeToString(this)); 60 } 61 62 @Override 63 public ArrayData set(final int index, final Object value, final boolean strict) { 64 if (has(index)) { 65 return underlying.set(index, value, strict); 66 } 67 return extensionCheck(strict, index); 68 } 69 70 @Override 71 public ArrayData set(final int index, final int value, final boolean strict) { 72 if (has(index)) { 73 return underlying.set(index, value, strict); 74 } 75 return extensionCheck(strict, index); 76 } 77 78 @Override 79 public ArrayData set(final int index, final double value, final boolean strict) { 80 if (has(index)) { 81 return underlying.set(index, value, strict); 82 } 83 return extensionCheck(strict, index); 84 } 85 }