author | ohair |
Wed, 30 Apr 2008 17:34:41 -0700 | |
changeset 468 | 642c8c0be52e |
parent 2 | 90ce3da70b43 |
child 715 | f16baef3a20e |
permissions | -rw-r--r-- |
2 | 1 |
/* |
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642c8c0be52e
6695553: Cleanup GPLv2+SPL legal notices in hat sources
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parents:
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* Copyright 1997-2005 Sun Microsystems, Inc. All Rights Reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Sun designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Sun in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
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* CA 95054 USA or visit www.sun.com if you need additional information or |
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* have any questions. |
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*/ |
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/* |
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* The Original Code is HAT. The Initial Developer of the |
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* Original Code is Bill Foote, with contributions from others |
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468
642c8c0be52e
6695553: Cleanup GPLv2+SPL legal notices in hat sources
ohair
parents:
2
diff
changeset
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* at JavaSoft/Sun. |
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*/ |
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package com.sun.tools.hat.internal.model; |
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import java.util.Enumeration; |
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import java.util.Hashtable; |
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/** |
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* |
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* @author Bill Foote |
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*/ |
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/** |
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* Represents a java "Thing". A thing is anything that can be the value of |
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* a field. This includes JavaHeapObject, JavaObjectRef, and JavaValue. |
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*/ |
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public abstract class JavaThing { |
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protected JavaThing() { |
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} |
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/** |
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* If this is a forward reference, figure out what it really |
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* refers to. |
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* |
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* @param snapshot The snapshot this is for |
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* @param field The field this thing represents. If null, it is |
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* assumed this thing is an object (and never a value). |
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*/ |
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public JavaThing dereference(Snapshot shapshot, JavaField field) { |
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return this; |
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} |
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/** |
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* Are we the same type as other? |
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* |
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* @see JavaObject.isSameTypeAs() |
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*/ |
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public boolean isSameTypeAs(JavaThing other) { |
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return getClass() == other.getClass(); |
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} |
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/** |
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* @return true iff this represents a heap-allocated object |
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*/ |
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abstract public boolean isHeapAllocated(); |
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/** |
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* @return the size of this object, in bytes, including VM overhead |
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*/ |
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abstract public int getSize(); |
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/** |
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* @return a human-readable string representation of this thing |
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*/ |
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abstract public String toString(); |
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/** |
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* Compare our string representation to other's |
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* @see java.lang.String.compareTo() |
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*/ |
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public int compareTo(JavaThing other) { |
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return toString().compareTo(other.toString()); |
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} |
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} |