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25 
26 package jdk.nashorn.internal.runtime.arrays;
27 
28 import static jdk.nashorn.internal.runtime.ECMAErrors.typeError;
29 
30 import jdk.nashorn.internal.objects.Global;
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 {
SealedArrayFilter(final ArrayData underlying)37     SealedArrayFilter(final ArrayData underlying) {
38         super(underlying);
39     }
40 
41     @Override
copy()42     public ArrayData copy() {
43         return new SealedArrayFilter(underlying.copy());
44     }
45 
46     @Override
slice(final long from, final long to)47     public ArrayData slice(final long from, final long to) {
48         return getUnderlying().slice(from, to);
49     }
50 
51     @Override
canDelete(final int index, final boolean strict)52     public boolean canDelete(final int index, final boolean strict) {
53         return canDelete(ArrayIndex.toLongIndex(index), strict);
54     }
55 
56     @Override
canDelete(final long longIndex, final boolean strict)57     public boolean canDelete(final long longIndex, final boolean strict) {
58         if (strict) {
59             throw typeError("cant.delete.property", Long.toString(longIndex), "sealed array");
60         }
61         return false;
62     }
63 
64     @Override
getDescriptor(final Global global, final int index)65     public PropertyDescriptor getDescriptor(final Global global, final int index) {
66         return global.newDataDescriptor(getObject(index), false, true, true);
67     }
68 }
69