1 /* ArrayTypeCommandSet.java -- class to implement the ArrayType Command Set 2 Copyright (C) 2005 Free Software Foundation 3 4 This file is part of GNU Classpath. 5 6 GNU Classpath is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 GNU Classpath is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GNU Classpath; see the file COPYING. If not, write to the 18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 19 02110-1301 USA. 20 21 Linking this library statically or dynamically with other modules is 22 making a combined work based on this library. Thus, the terms and 23 conditions of the GNU General Public License cover the whole 24 combination. 25 26 As a special exception, the copyright holders of this library give you 27 permission to link this library with independent modules to produce an 28 executable, regardless of the license terms of these independent 29 modules, and to copy and distribute the resulting executable under 30 terms of your choice, provided that you also meet, for each linked 31 independent module, the terms and conditions of the license of that 32 module. An independent module is a module which is not derived from 33 or based on this library. If you modify this library, you may extend 34 this exception to your version of the library, but you are not 35 obligated to do so. If you do not wish to do so, delete this 36 exception statement from your version. */ 37 38 39 package gnu.classpath.jdwp.processor; 40 41 import gnu.classpath.jdwp.JdwpConstants; 42 import gnu.classpath.jdwp.exception.JdwpException; 43 import gnu.classpath.jdwp.exception.JdwpInternalErrorException; 44 import gnu.classpath.jdwp.exception.NotImplementedException; 45 import gnu.classpath.jdwp.id.ObjectId; 46 import gnu.classpath.jdwp.id.ReferenceTypeId; 47 48 import java.io.DataOutputStream; 49 import java.io.IOException; 50 import java.lang.reflect.Array; 51 import java.nio.ByteBuffer; 52 53 /** 54 * A class representing the ArrayType Command Set. 55 * 56 * @author Aaron Luchko <aluchko@redhat.com> 57 */ 58 public class ArrayTypeCommandSet 59 extends CommandSet 60 { runCommand(ByteBuffer bb, DataOutputStream os, byte command)61 public boolean runCommand(ByteBuffer bb, DataOutputStream os, byte command) 62 throws JdwpException 63 { 64 65 // Although there's only a single command to choose from we still use 66 // a switch to maintain consistency with the rest of the CommandSets 67 try 68 { 69 switch (command) 70 { 71 case JdwpConstants.CommandSet.ArrayType.NEW_INSTANCE: 72 executeNewInstance(bb, os); 73 break; 74 default: 75 throw new NotImplementedException("Command " + command + 76 " not found in ArrayType Command Set."); 77 } 78 } 79 catch (IOException ex) 80 { 81 // The DataOutputStream we're using isn't talking to a socket at all 82 // So if we throw an IOException we're in serious trouble 83 throw new JdwpInternalErrorException(ex); 84 } 85 86 return false; 87 } 88 executeNewInstance(ByteBuffer bb, DataOutputStream os)89 public void executeNewInstance(ByteBuffer bb, DataOutputStream os) 90 throws JdwpException, IOException 91 { 92 ReferenceTypeId refId = idMan.readReferenceTypeId(bb); 93 Class arrayType = refId.getType(); 94 Class componentType = arrayType.getComponentType(); 95 96 int length = bb.getInt(); 97 Object newArray = Array.newInstance(componentType, length); 98 ObjectId oid = idMan.getObjectId(newArray); 99 100 // Since this array isn't referenced anywhere we'll disable garbage 101 // collection on it so it's still around when the debugger gets back to it. 102 oid.disableCollection(); 103 oid.writeTagged(os); 104 } 105 } 106