ObjectReferenceCommandSet.java: New file.

        * gnu/classpath/jdwp/processor/ObjectReferenceCommandSet.java:
        New file.

From-SVN: r101935

1 files changed, 249 insertions, 0 deletions

diff --git a/libjava/gnu/classpath/jdwp/processor/ObjectReferenceCommandSet.java b/libjava/gnu/classpath/jdwp/processor/ObjectReferenceCommandSet.java
new file mode 100644
index 0000000..38bb0cd
--- /dev/null
+++ b/libjava/gnu/classpath/jdwp/processor/ObjectReferenceCommandSet.java
@@ -0,0 +1,249 @@
+/* ObjectReferenceCommandSet.java -- lass to implement the ObjectReference
+   Command Set
+   Copyright (C) 2005 Free Software Foundation
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath 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 for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING.  If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library.  Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module.  An independent module is a module which is not derived from
+or based on this library.  If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so.  If you do not wish to do so, delete this
+exception statement from your version. */
+
+package gnu.classpath.jdwp.processor;
+
+import gnu.classpath.jdwp.IVirtualMachine;
+import gnu.classpath.jdwp.Jdwp;
+import gnu.classpath.jdwp.JdwpConstants;
+import gnu.classpath.jdwp.exception.InvalidFieldException;
+import gnu.classpath.jdwp.exception.JdwpException;
+import gnu.classpath.jdwp.exception.JdwpInternalErrorException;
+import gnu.classpath.jdwp.exception.NotImplementedException;
+import gnu.classpath.jdwp.id.IdManager;
+import gnu.classpath.jdwp.id.ObjectId;
+import gnu.classpath.jdwp.id.ReferenceTypeId;
+import gnu.classpath.jdwp.util.Value;
+import gnu.classpath.jdwp.util.MethodInvoker;
+
+import java.io.DataOutputStream;
+import java.io.IOException;
+import java.lang.reflect.Field;
+import java.lang.reflect.Method;
+import java.nio.ByteBuffer;
+
+/**
+ * A class representing the ObjectReference Command Set.
+ * 
+ * @author Aaron Luchko <aluchko@redhat.com>
+ */
+public class ObjectReferenceCommandSet implements CommandSet
+{
+  // Our hook into the jvm
+  private final IVirtualMachine vm = Jdwp.getIVirtualMachine();
+
+  // Manages all the different ids that are assigned by jdwp
+  private final IdManager idMan = Jdwp.getIdManager();
+
+  public boolean runCommand(ByteBuffer bb, DataOutputStream os, byte command)
+    throws JdwpException
+  {
+    try
+      {
+        switch (command)
+          {
+          case JdwpConstants.CommandSet.ObjectReference.REFERENCE_TYPE:
+            executeReferenceType(bb, os);
+            break;
+          case JdwpConstants.CommandSet.ObjectReference.GET_VALUES:
+            executeGetValues(bb, os);
+            break;
+          case JdwpConstants.CommandSet.ObjectReference.SET_VALUES:
+            executeSetValues(bb, os);
+            break;
+          case JdwpConstants.CommandSet.ObjectReference.MONITOR_INFO:
+            executeMonitorInfo(bb, os);
+            break;
+          case JdwpConstants.CommandSet.ObjectReference.INVOKE_METHOD:
+            executeInvokeMethod(bb, os);
+            break;
+          case JdwpConstants.CommandSet.ObjectReference.DISABLE_COLLECTION:
+            executeDisableCollection(bb, os);
+            break;
+          case JdwpConstants.CommandSet.ObjectReference.ENABLE_COLLECTION:
+            executeEnableCollection(bb, os);
+            break;
+          case JdwpConstants.CommandSet.ObjectReference.IS_COLLECTED:
+            executeIsCollected(bb, os);
+            break;
+          default:
+            throw new NotImplementedException("Command " + command +
+              " not found in String Reference Command Set.");
+          }
+      }
+    catch (IOException ex)
+      {
+        // The DataOutputStream we're using isn't talking to a socket at all
+        // So if we throw an IOException we're in serious trouble
+        throw new JdwpInternalErrorException(ex);
+      }
+    return true;
+  }
+
+  private void executeReferenceType(ByteBuffer bb, DataOutputStream os)
+    throws JdwpException, IOException
+  {
+    ObjectId oid = idMan.readId(bb);
+    Object obj = oid.getObject();
+    Class clazz = obj.getClass();
+    ReferenceTypeId refId = idMan.getReferenceTypeId(clazz);
+    refId.writeTagged(os);
+  }
+
+  private void executeGetValues(ByteBuffer bb, DataOutputStream os)
+    throws JdwpException, IOException
+  {
+    ObjectId oid = idMan.readId(bb);
+    Object obj = oid.getObject();
+
+    int numFields = bb.getInt();
+
+    os.writeInt(numFields); // Looks pointless but this is the protocol
+
+    for (int i = 0; i < numFields; i++)
+      {
+        Field field = (Field) idMan.readId(bb).getObject();
+        Value.writeValueFromField(os, field, obj);
+      }
+  }
+
+  private void executeSetValues(ByteBuffer bb, DataOutputStream os)
+    throws JdwpException, IOException
+  {
+    ObjectId oid = idMan.readId(bb);
+    Object obj = oid.getObject();
+
+    int numFields = bb.getInt();
+
+    for (int i = 0; i < numFields; i++)
+      {
+        Field field = (Field) idMan.readId(bb).getObject();
+        Object value = Value.getObj(bb, field);
+        try
+          {
+            field.set(obj, value);
+          }
+        catch (IllegalArgumentException ex)
+          {
+            // I suppose this would best qualify as an invalid field then
+            throw new InvalidFieldException(ex);
+          }
+        catch (IllegalAccessException ex)
+          {
+            // We should be able to access any field
+            throw new JdwpInternalErrorException(ex);
+          }
+      }
+  }
+
+  private void executeMonitorInfo(ByteBuffer bb, DataOutputStream os)
+    throws JdwpException
+  {
+    // This command is optional, determined by VirtualMachines CapabilitiesNew
+    // so we'll leave it till later to implement
+    throw new NotImplementedException(
+      "Command ExecuteMonitorInfo not implemented.");
+
+  }
+
+  private void executeInvokeMethod(ByteBuffer bb, DataOutputStream os)
+    throws JdwpException, IOException
+  {
+    ObjectId oid = idMan.readId(bb);
+    Object obj = oid.getObject();
+
+    ObjectId tid = idMan.readId(bb);
+    Thread thread = (Thread) tid.getObject();
+
+    ReferenceTypeId rid = idMan.readReferenceTypeId(bb);
+    Class clazz = rid.getType();
+
+    ObjectId mid = idMan.readId(bb);
+    Method method = (Method) mid.getObject();
+
+    int args = bb.getInt();
+    Object[] values = new Object[args];
+
+    for (int i = 0; i < args; i++)
+      {
+        values[i] = Value.getObj(bb);
+      }
+
+    int invokeOptions = bb.getInt();
+
+    if ((invokeOptions & JdwpConstants.InvokeOptions.INVOKE_SINGLE_THREADED) != 0)
+      { // We must suspend all other running threads first
+        vm.suspendAllThreads();
+      }
+    boolean nonVirtual;
+    if ((invokeOptions & JdwpConstants.InvokeOptions.INVOKE_NONVIRTUAL) != 0)
+      nonVirtual = true;
+    else
+      nonVirtual = false;
+    MethodInvoker vmi = new MethodInvoker(vm);
+
+    vmi.executeMethod(obj, thread, clazz, method, values, nonVirtual);
+    Object value = vmi.getReturnedValue();
+    ObjectId exceptionId = vmi.getExceptionId();
+    
+    Value.writeValue(os, value);
+    exceptionId.writeTagged(os);
+  }
+
+  private void executeDisableCollection(ByteBuffer bb, DataOutputStream os)
+    throws JdwpException, IOException
+  {
+    ObjectId oid = idMan.readId(bb);
+    oid.disableCollection();
+  }
+
+  private void executeEnableCollection(ByteBuffer bb, DataOutputStream os)
+    throws JdwpException, IOException
+  {
+    ObjectId oid = idMan.readId(bb);
+    oid.enableCollection();
+  }
+
+  private void executeIsCollected(ByteBuffer bb, DataOutputStream os)
+    throws JdwpException, IOException
+  {
+    ObjectId oid = idMan.readId(bb);
+    boolean collected = oid.isCollected();
+    os.writeBoolean(collected);
+  }
+}