1 |
769 |
jeremybenn |
/* ClassTypeCommandSet.java -- class to implement the ClassType
|
2 |
|
|
Command Set
|
3 |
|
|
Copyright (C) 2005, 2007 Free Software Foundation
|
4 |
|
|
|
5 |
|
|
This file is part of GNU Classpath.
|
6 |
|
|
|
7 |
|
|
GNU Classpath is free software; you can redistribute it and/or modify
|
8 |
|
|
it under the terms of the GNU General Public License as published by
|
9 |
|
|
the Free Software Foundation; either version 2, or (at your option)
|
10 |
|
|
any later version.
|
11 |
|
|
|
12 |
|
|
GNU Classpath is distributed in the hope that it will be useful, but
|
13 |
|
|
WITHOUT ANY WARRANTY; without even the implied warranty of
|
14 |
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
15 |
|
|
General Public License for more details.
|
16 |
|
|
|
17 |
|
|
You should have received a copy of the GNU General Public License
|
18 |
|
|
along with GNU Classpath; see the file COPYING. If not, write to the
|
19 |
|
|
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
20 |
|
|
02110-1301 USA.
|
21 |
|
|
|
22 |
|
|
Linking this library statically or dynamically with other modules is
|
23 |
|
|
making a combined work based on this library. Thus, the terms and
|
24 |
|
|
conditions of the GNU General Public License cover the whole
|
25 |
|
|
combination.
|
26 |
|
|
|
27 |
|
|
As a special exception, the copyright holders of this library give you
|
28 |
|
|
permission to link this library with independent modules to produce an
|
29 |
|
|
executable, regardless of the license terms of these independent
|
30 |
|
|
modules, and to copy and distribute the resulting executable under
|
31 |
|
|
terms of your choice, provided that you also meet, for each linked
|
32 |
|
|
terms of your choice, provided that you also meet, for each linked
|
33 |
|
|
independent module, the terms and conditions of the license of that
|
34 |
|
|
module. An independent module is a module which is not derived from
|
35 |
|
|
or based on this library. If you modify this library, you may extend
|
36 |
|
|
this exception to your version of the library, but you are not
|
37 |
|
|
obligated to do so. If you do not wish to do so, delete this
|
38 |
|
|
exception statement from your version. */
|
39 |
|
|
|
40 |
|
|
|
41 |
|
|
package gnu.classpath.jdwp.processor;
|
42 |
|
|
|
43 |
|
|
import gnu.classpath.jdwp.JdwpConstants;
|
44 |
|
|
import gnu.classpath.jdwp.VMMethod;
|
45 |
|
|
import gnu.classpath.jdwp.VMVirtualMachine;
|
46 |
|
|
import gnu.classpath.jdwp.exception.InvalidFieldException;
|
47 |
|
|
import gnu.classpath.jdwp.exception.JdwpException;
|
48 |
|
|
import gnu.classpath.jdwp.exception.JdwpInternalErrorException;
|
49 |
|
|
import gnu.classpath.jdwp.exception.NotImplementedException;
|
50 |
|
|
import gnu.classpath.jdwp.id.ObjectId;
|
51 |
|
|
import gnu.classpath.jdwp.id.ReferenceTypeId;
|
52 |
|
|
import gnu.classpath.jdwp.util.MethodResult;
|
53 |
|
|
import gnu.classpath.jdwp.value.ObjectValue;
|
54 |
|
|
import gnu.classpath.jdwp.value.Value;
|
55 |
|
|
import gnu.classpath.jdwp.value.ValueFactory;
|
56 |
|
|
|
57 |
|
|
import java.io.DataOutputStream;
|
58 |
|
|
import java.io.IOException;
|
59 |
|
|
import java.lang.reflect.Field;
|
60 |
|
|
import java.nio.ByteBuffer;
|
61 |
|
|
|
62 |
|
|
/**
|
63 |
|
|
* A class representing the ClassType Command Set.
|
64 |
|
|
*
|
65 |
|
|
* @author Aaron Luchko <aluchko@redhat.com>
|
66 |
|
|
*/
|
67 |
|
|
public class ClassTypeCommandSet
|
68 |
|
|
extends CommandSet
|
69 |
|
|
{
|
70 |
|
|
public boolean runCommand(ByteBuffer bb, DataOutputStream os, byte command)
|
71 |
|
|
throws JdwpException
|
72 |
|
|
{
|
73 |
|
|
try
|
74 |
|
|
{
|
75 |
|
|
switch (command)
|
76 |
|
|
{
|
77 |
|
|
case JdwpConstants.CommandSet.ClassType.SUPERCLASS:
|
78 |
|
|
executeSuperclass(bb, os);
|
79 |
|
|
break;
|
80 |
|
|
case JdwpConstants.CommandSet.ClassType.SET_VALUES:
|
81 |
|
|
executeSetValues(bb, os);
|
82 |
|
|
break;
|
83 |
|
|
case JdwpConstants.CommandSet.ClassType.INVOKE_METHOD:
|
84 |
|
|
executeInvokeMethod(bb, os);
|
85 |
|
|
break;
|
86 |
|
|
case JdwpConstants.CommandSet.ClassType.NEW_INSTANCE:
|
87 |
|
|
executeNewInstance(bb, os);
|
88 |
|
|
break;
|
89 |
|
|
default:
|
90 |
|
|
throw new NotImplementedException("Command " + command +
|
91 |
|
|
" not found in ClassType Command Set.");
|
92 |
|
|
}
|
93 |
|
|
}
|
94 |
|
|
catch (IOException ex)
|
95 |
|
|
{
|
96 |
|
|
// The DataOutputStream we're using isn't talking to a socket at all
|
97 |
|
|
// So if we throw an IOException we're in serious trouble
|
98 |
|
|
throw new JdwpInternalErrorException(ex);
|
99 |
|
|
}
|
100 |
|
|
|
101 |
|
|
return false;
|
102 |
|
|
}
|
103 |
|
|
|
104 |
|
|
private void executeSuperclass(ByteBuffer bb, DataOutputStream os)
|
105 |
|
|
throws JdwpException, IOException
|
106 |
|
|
{
|
107 |
|
|
ReferenceTypeId refId = idMan.readReferenceTypeId(bb);
|
108 |
|
|
Class clazz = refId.getType();
|
109 |
|
|
Class superClazz = clazz.getSuperclass();
|
110 |
|
|
|
111 |
|
|
if (superClazz == null) {
|
112 |
|
|
os.writeLong(0L);
|
113 |
|
|
} else {
|
114 |
|
|
ReferenceTypeId clazzId = idMan.getReferenceTypeId(superClazz);
|
115 |
|
|
clazzId.write(os);
|
116 |
|
|
}
|
117 |
|
|
}
|
118 |
|
|
|
119 |
|
|
private void executeSetValues(ByteBuffer bb, DataOutputStream os)
|
120 |
|
|
throws JdwpException, IOException
|
121 |
|
|
{
|
122 |
|
|
ReferenceTypeId refId = idMan.readReferenceTypeId(bb);
|
123 |
|
|
|
124 |
|
|
// We don't actually seem to need this...
|
125 |
|
|
Class clazz = refId.getType();
|
126 |
|
|
|
127 |
|
|
int numValues = bb.getInt();
|
128 |
|
|
|
129 |
|
|
for (int i = 0; i < numValues; i++)
|
130 |
|
|
{
|
131 |
|
|
ObjectId fieldId = idMan.readObjectId(bb);
|
132 |
|
|
Field field = (Field) (fieldId.getObject());
|
133 |
|
|
Object value = Value.getUntaggedObject(bb, field.getType());
|
134 |
|
|
try
|
135 |
|
|
{
|
136 |
|
|
field.setAccessible(true); // Might be a private field
|
137 |
|
|
field.set(null, value);
|
138 |
|
|
}
|
139 |
|
|
catch (IllegalArgumentException ex)
|
140 |
|
|
{
|
141 |
|
|
throw new InvalidFieldException(ex);
|
142 |
|
|
}
|
143 |
|
|
catch (IllegalAccessException ex)
|
144 |
|
|
{ // Since we set it as accessible this really shouldn't happen
|
145 |
|
|
throw new JdwpInternalErrorException(ex);
|
146 |
|
|
}
|
147 |
|
|
}
|
148 |
|
|
}
|
149 |
|
|
|
150 |
|
|
private void executeInvokeMethod(ByteBuffer bb, DataOutputStream os)
|
151 |
|
|
throws JdwpException, IOException
|
152 |
|
|
{
|
153 |
|
|
MethodResult mr = invokeMethod(bb);
|
154 |
|
|
|
155 |
|
|
Throwable exception = mr.getThrownException();
|
156 |
|
|
ObjectId eId = idMan.getObjectId(exception);
|
157 |
|
|
mr.getReturnedValue().writeTagged(os);
|
158 |
|
|
eId.writeTagged(os);
|
159 |
|
|
}
|
160 |
|
|
|
161 |
|
|
private void executeNewInstance(ByteBuffer bb, DataOutputStream os)
|
162 |
|
|
throws JdwpException, IOException
|
163 |
|
|
{
|
164 |
|
|
MethodResult mr = invokeMethod(bb);
|
165 |
|
|
Throwable exception = mr.getThrownException();
|
166 |
|
|
|
167 |
|
|
if (exception == null && ! (mr.getReturnedValue() instanceof ObjectValue))
|
168 |
|
|
throw new JdwpInternalErrorException("new instance returned non-object");
|
169 |
|
|
|
170 |
|
|
ObjectValue ov = (ObjectValue) mr.getReturnedValue();
|
171 |
|
|
ObjectId oId = idMan.getObjectId(ov.getValue());
|
172 |
|
|
|
173 |
|
|
ObjectId eId = idMan.getObjectId(exception);
|
174 |
|
|
|
175 |
|
|
oId.writeTagged(os);
|
176 |
|
|
eId.writeTagged(os);
|
177 |
|
|
}
|
178 |
|
|
|
179 |
|
|
/**
|
180 |
|
|
* Execute the static method and return the resulting MethodResult.
|
181 |
|
|
*/
|
182 |
|
|
private MethodResult invokeMethod(ByteBuffer bb)
|
183 |
|
|
throws JdwpException, IOException
|
184 |
|
|
{
|
185 |
|
|
ReferenceTypeId refId = idMan.readReferenceTypeId(bb);
|
186 |
|
|
Class clazz = refId.getType();
|
187 |
|
|
|
188 |
|
|
ObjectId tId = idMan.readObjectId(bb);
|
189 |
|
|
Thread thread = (Thread) tId.getObject();
|
190 |
|
|
|
191 |
|
|
VMMethod method = VMMethod.readId(clazz, bb);
|
192 |
|
|
|
193 |
|
|
int args = bb.getInt();
|
194 |
|
|
Value[] values = new Value[args];
|
195 |
|
|
|
196 |
|
|
for (int i = 0; i < args; i++)
|
197 |
|
|
values[i] = ValueFactory.createFromTagged(bb);
|
198 |
|
|
|
199 |
|
|
int invokeOpts = bb.getInt();
|
200 |
|
|
MethodResult mr = VMVirtualMachine.executeMethod(null, thread,
|
201 |
|
|
clazz, method,
|
202 |
|
|
values, invokeOpts);
|
203 |
|
|
return mr;
|
204 |
|
|
}
|
205 |
|
|
}
|