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 
  26 package jdk.nashorn.internal.runtime.arrays;
  27 

  28 import static jdk.nashorn.internal.runtime.ECMAErrors.typeError;
  29 
  30 import jdk.nashorn.internal.runtime.GlobalObject;
  31 import jdk.nashorn.internal.runtime.PropertyDescriptor;
  32 
  33 /**
  34  * ArrayData after the array has been sealed by Object.seal call.
  35  */
  36 class SealedArrayFilter extends ArrayFilter {
  37     SealedArrayFilter(final ArrayData underlying) {
  38         super(underlying);
  39     }
  40 
  41     @Override
  42     public ArrayData copy() {
  43         return new SealedArrayFilter(underlying.copy());
  44     }
  45 
  46     @Override
  47     public ArrayData slice(final long from, final long to) {
  48         return getUnderlying().slice(from, to);
  49     }
  50 
  51     @Override
  52     public boolean canDelete(final int index, final boolean strict) {
  53         if (strict) {
  54             throw typeError("cant.delete.property", Integer.toString(index), "sealed array");
  55         }
  56         return false;
  57     }
  58 
  59     @Override
  60     public boolean canDelete(final long fromIndex, final long toIndex, final boolean strict) {
  61         return canDelete((int) fromIndex, strict);
  62     }
  63 
  64     @Override
  65     public PropertyDescriptor getDescriptor(final GlobalObject global, final int index) {
  66         return global.newDataDescriptor(getObject(index), false, true, true);
  67     }
  68 }
--- EOF ---