1 /*
2  * Copyright (c) 2000, 2008, 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
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9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
14  *
15  * You should have received a copy of the GNU General Public License version
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17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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23  */
24 
25 package sun.jvm.hotspot.types.basic;
26 
27 import sun.jvm.hotspot.debugger.*;
28 import sun.jvm.hotspot.types.*;
29 
30 /** A specialization of BasicField which represents a field containing
31     an oop value and which adds typechecked getValue() routines
32     returning OopHandles. */
33 
34 public class BasicOopField extends BasicField implements OopField {
35 
36 
BasicOopField(OopField oopf)37   public BasicOopField(OopField oopf) {
38     super(oopf);
39   }
40 
BasicOopField(BasicTypeDataBase db, Type containingType, String name, Type type, boolean isStatic, long offset, Address staticFieldAddress)41   public BasicOopField(BasicTypeDataBase db, Type containingType, String name, Type type,
42                        boolean isStatic, long offset, Address staticFieldAddress) {
43     super(db, containingType, name, type, isStatic, offset, staticFieldAddress);
44 
45     if (!type.isOopType()) {
46       throw new WrongTypeException("Type of a BasicOopField must be an oop type");
47     }
48   }
49 
50   /** The field must be nonstatic and the type of the field must be a
51       Java oop, or a WrongTypeException will be thrown. */
getValue(Address addr)52   public OopHandle getValue(Address addr) throws UnmappedAddressException, UnalignedAddressException, WrongTypeException {
53     return getOopHandle(addr);
54   }
55 
56   /** The field must be static and the type of the field must be a
57       Java oop, or a WrongTypeException will be thrown. */
getValue()58   public OopHandle getValue() throws UnmappedAddressException, UnalignedAddressException, WrongTypeException {
59     return getOopHandle();
60   }
61 }
62