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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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package sun.jvm.hotspot.runtime;

import java.util.*;
import sun.jvm.hotspot.debugger.*;
import sun.jvm.hotspot.debugger.cdbg.CDebugger;
import sun.jvm.hotspot.debugger.cdbg.ClosestSymbol;
import sun.jvm.hotspot.debugger.cdbg.LoadObject;
import sun.jvm.hotspot.types.*;
import sun.jvm.hotspot.HotSpotTypeDataBase;

This provides a factory to create instances where the base virtual type is know and the expected subclasses are within a particular package.
/** This provides a factory to create instances where the base virtual * type is know and the expected subclasses are within a particular * package. */
public class VirtualBaseConstructor<T> extends InstanceConstructor { private TypeDataBase db; private HashMap map; // Map<String, Class> private Type baseType; private Class unknownTypeHandler; public VirtualBaseConstructor(TypeDataBase db, Type baseType, String packageName, Class unknownTypeHandler) { this.db = (HotSpotTypeDataBase)db; map = new HashMap(); this.baseType = baseType; this.unknownTypeHandler = unknownTypeHandler; if (packageName != null) { // Try to find mirror types for each of the types. If there isn't // a direct mirror then try to find an instantiable superclass and // treat it as that. for (Iterator iter = db.getTypes(); iter.hasNext(); ) { Type t = (Type) iter.next(); Type superType = t; while (superType != null && superType != baseType) { superType = superType.getSuperclass(); } if (superType == baseType) { superType = t; Class c = null; while (c == null && superType != null) { try { c = Class.forName(packageName + "." + superType.getName()); } catch (Exception e) { } if (c == null) superType = superType.getSuperclass(); } if (c == null) { c = unknownTypeHandler; } map.put(t.getName(), c); } } } }
Adds a mapping from the given C++ type name to the given Java class. The latter must be a subclass of sun.jvm.hotspot.runtime.VMObject. Returns false if there was already a class for this type name in the map.
/** Adds a mapping from the given C++ type name to the given Java class. The latter must be a subclass of sun.jvm.hotspot.runtime.VMObject. Returns false if there was already a class for this type name in the map. */
public boolean addMapping(String cTypeName, Class clazz) { if (map.get(cTypeName) != null) { return false; } map.put(cTypeName, clazz); return true; }
Instantiate the most-precisely typed wrapper object available for the type of the given Address. If no type in the mapping matched the type of the Address, throws a WrongTypeException. Returns null for a null address (similar behavior to VMObjectFactory).
/** Instantiate the most-precisely typed wrapper object available for the type of the given Address. If no type in the mapping matched the type of the Address, throws a WrongTypeException. Returns null for a null address (similar behavior to VMObjectFactory). */
public T instantiateWrapperFor(Address addr) throws WrongTypeException { if (addr == null) { return null; } Type type = db.findDynamicTypeForAddress(addr, baseType); if (type != null) { return (T) VMObjectFactory.newObject((Class) map.get(type.getName()), addr); } else if (unknownTypeHandler != null) { return (T) VMObjectFactory.newObject(unknownTypeHandler, addr); } throw newWrongTypeException(addr); } }