1 /* MethodCommandSet.java -- class to implement the Method Command Set 2 Copyright (C) 2005, 2006, 2007 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.VMMethod; 43 import gnu.classpath.jdwp.VMVirtualMachine; 44 import gnu.classpath.jdwp.exception.JdwpException; 45 import gnu.classpath.jdwp.exception.JdwpInternalErrorException; 46 import gnu.classpath.jdwp.exception.NotImplementedException; 47 import gnu.classpath.jdwp.id.ReferenceTypeId; 48 import gnu.classpath.jdwp.util.LineTable; 49 import gnu.classpath.jdwp.util.VariableTable; 50 51 import java.io.DataOutputStream; 52 import java.io.IOException; 53 import java.nio.ByteBuffer; 54 55 /** 56 * A class representing the Method Command Set. 57 * 58 * @author Aaron Luchko <aluchko@redhat.com> 59 */ 60 public class MethodCommandSet 61 extends CommandSet 62 { runCommand(ByteBuffer bb, DataOutputStream os, byte command)63 public boolean runCommand(ByteBuffer bb, DataOutputStream os, byte command) 64 throws JdwpException 65 { 66 try 67 { 68 switch (command) 69 { 70 case JdwpConstants.CommandSet.Method.LINE_TABLE: 71 executeLineTable(bb, os); 72 break; 73 case JdwpConstants.CommandSet.Method.VARIABLE_TABLE: 74 executeVariableTable(bb, os); 75 break; 76 case JdwpConstants.CommandSet.Method.BYTE_CODES: 77 executeByteCodes(bb, os); 78 break; 79 case JdwpConstants.CommandSet.Method.IS_OBSOLETE: 80 executeIsObsolete(bb, os); 81 break; 82 case JdwpConstants.CommandSet.Method.VARIABLE_TABLE_WITH_GENERIC: 83 executeVariableTableWithGeneric(bb, os); 84 break; 85 default: 86 throw new NotImplementedException( 87 "Command " + command + " not found in Method Command Set."); 88 } 89 } 90 catch (IOException ex) 91 { 92 // The DataOutputStream we're using isn't talking to a socket at all 93 // So if we throw an IOException we're in serious trouble 94 throw new JdwpInternalErrorException(ex); 95 } 96 97 return false; 98 } 99 executeLineTable(ByteBuffer bb, DataOutputStream os)100 private void executeLineTable(ByteBuffer bb, DataOutputStream os) 101 throws JdwpException, IOException 102 { 103 ReferenceTypeId refId = idMan.readReferenceTypeId(bb); 104 Class clazz = refId.getType(); 105 106 VMMethod method = VMMethod.readId(clazz, bb); 107 LineTable lt = method.getLineTable(); 108 lt.write(os); 109 } 110 executeVariableTable(ByteBuffer bb, DataOutputStream os)111 private void executeVariableTable(ByteBuffer bb, DataOutputStream os) 112 throws JdwpException, IOException 113 { 114 ReferenceTypeId refId = idMan.readReferenceTypeId(bb); 115 Class clazz = refId.getType(); 116 117 VMMethod method = VMMethod.readId(clazz, bb); 118 VariableTable vt = method.getVariableTable(); 119 vt.write(os); 120 } 121 executeByteCodes(ByteBuffer bb, DataOutputStream os)122 private void executeByteCodes(ByteBuffer bb, DataOutputStream os) 123 throws JdwpException, IOException 124 { 125 if (!VMVirtualMachine.canGetBytecodes) 126 { 127 String msg = "getting bytecodes is unsupported"; 128 throw new NotImplementedException(msg); 129 } 130 131 ReferenceTypeId id = idMan.readReferenceTypeId(bb); 132 Class klass = id.getType(); 133 VMMethod method = VMMethod.readId(klass, bb); 134 byte[] bytecode = VMVirtualMachine.getBytecodes(method); 135 os.writeInt(bytecode.length); 136 os.write(bytecode); 137 } 138 executeIsObsolete(ByteBuffer bb, DataOutputStream os)139 private void executeIsObsolete(ByteBuffer bb, DataOutputStream os) 140 throws IOException 141 { 142 // The debugger is really asking if this method has been redefined using 143 // VirtualMachineCommandSet.RedefineClasses. Since we don't implement that 144 // command the answer to this will always be false. 145 os.writeBoolean(false); 146 } 147 executeVariableTableWithGeneric(ByteBuffer bb, DataOutputStream os)148 private void executeVariableTableWithGeneric(ByteBuffer bb, 149 DataOutputStream os) 150 throws JdwpException 151 { 152 // We don't have generics yet 153 throw new NotImplementedException( 154 "Command VariableTableWithGeneric not implemented."); 155 } 156 157 } 158