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24 
25 package sun.jvm.hotspot.oops;
26 
27 import sun.jvm.hotspot.debugger.*;
28 
29 // The class for an oop field simply provides access to the value.
30 public class NarrowOopField extends OopField {
NarrowOopField(FieldIdentifier id, long offset, boolean isVMField)31   public NarrowOopField(FieldIdentifier id, long offset, boolean isVMField) {
32     super(id, offset, isVMField);
33   }
34 
NarrowOopField(sun.jvm.hotspot.types.OopField vmField, long startOffset)35   public NarrowOopField(sun.jvm.hotspot.types.OopField vmField, long startOffset) {
36     super(new NamedFieldIdentifier(vmField.getName()), vmField.getOffset() + startOffset, true);
37   }
38 
NarrowOopField(InstanceKlass holder, int fieldArrayIndex)39   public NarrowOopField(InstanceKlass holder, int fieldArrayIndex) {
40     super(holder, fieldArrayIndex);
41   }
42 
getValue(Oop obj)43   public Oop getValue(Oop obj) {
44     return obj.getHeap().newOop(getValueAsOopHandle(obj));
45   }
46 
47   /** Debugging support */
getValueAsOopHandle(Oop obj)48   public OopHandle getValueAsOopHandle(Oop obj) {
49     return obj.getHandle().getCompOopHandleAt(getOffset());
50   }
51 
setValue(Oop obj)52   public void setValue(Oop obj) throws MutationException {
53     // Fix this: setOopAt is missing in Address
54   }
55 }
56