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1 /*
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2 * Copyright 2000 Sun Microsystems, Inc. All Rights Reserved.
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3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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4 *
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5 * This code is free software; you can redistribute it and/or modify it
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6 * under the terms of the GNU General Public License version 2 only, as
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7 * published by the Free Software Foundation.
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8 *
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9 * This code is distributed in the hope that it will be useful, but WITHOUT
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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12 * version 2 for more details (a copy is included in the LICENSE file that
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13 * accompanied this code).
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14 *
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15 * You should have received a copy of the GNU General Public License version
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16 * 2 along with this work; if not, write to the Free Software Foundation,
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17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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18 *
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19 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
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20 * CA 95054 USA or visit www.sun.com if you need additional information or
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21 * have any questions.
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22 *
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23 */
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24
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25 package sun.jvm.hotspot.types.basic;
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26
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27 import sun.jvm.hotspot.debugger.*;
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28 import sun.jvm.hotspot.types.*;
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29
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30 /** A specialization of BasicField which represents a field containing
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31 an oop value and which adds typechecked getValue() routines
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32 returning OopHandles. */
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33
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34 public class BasicOopField extends BasicField implements OopField {
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35 public BasicOopField(BasicTypeDataBase db, Type containingType, String name, Type type,
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36 boolean isStatic, long offset, Address staticFieldAddress) {
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37 super(db, containingType, name, type, isStatic, offset, staticFieldAddress);
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38
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39 if (!type.isOopType()) {
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40 throw new WrongTypeException("Type of a BasicOopField must be an oop type");
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41 }
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42 }
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43
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44 /** The field must be nonstatic and the type of the field must be a
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45 Java oop, or a WrongTypeException will be thrown. */
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46 public OopHandle getValue(Address addr) throws UnmappedAddressException, UnalignedAddressException, WrongTypeException {
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47 return getOopHandle(addr);
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48 }
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49
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50 /** The field must be static and the type of the field must be a
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51 Java oop, or a WrongTypeException will be thrown. */
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52 public OopHandle getValue() throws UnmappedAddressException, UnalignedAddressException, WrongTypeException {
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53 return getOopHandle();
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54 }
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55 }
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