diff options
Diffstat (limited to 'gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/processor/ClassTypeCommandSet.java')
-rw-r--r-- | gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/processor/ClassTypeCommandSet.java | 205 |
1 files changed, 205 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/processor/ClassTypeCommandSet.java b/gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/processor/ClassTypeCommandSet.java new file mode 100644 index 000000000..500152ea6 --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/processor/ClassTypeCommandSet.java @@ -0,0 +1,205 @@ +/* ClassTypeCommandSet.java -- class to implement the ClassType + Command Set + Copyright (C) 2005, 2007 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 +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.JdwpConstants; +import gnu.classpath.jdwp.VMMethod; +import gnu.classpath.jdwp.VMVirtualMachine; +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.ObjectId; +import gnu.classpath.jdwp.id.ReferenceTypeId; +import gnu.classpath.jdwp.util.MethodResult; +import gnu.classpath.jdwp.value.ObjectValue; +import gnu.classpath.jdwp.value.Value; +import gnu.classpath.jdwp.value.ValueFactory; + +import java.io.DataOutputStream; +import java.io.IOException; +import java.lang.reflect.Field; +import java.nio.ByteBuffer; + +/** + * A class representing the ClassType Command Set. + * + * @author Aaron Luchko <aluchko@redhat.com> + */ +public class ClassTypeCommandSet + extends CommandSet +{ + public boolean runCommand(ByteBuffer bb, DataOutputStream os, byte command) + throws JdwpException + { + try + { + switch (command) + { + case JdwpConstants.CommandSet.ClassType.SUPERCLASS: + executeSuperclass(bb, os); + break; + case JdwpConstants.CommandSet.ClassType.SET_VALUES: + executeSetValues(bb, os); + break; + case JdwpConstants.CommandSet.ClassType.INVOKE_METHOD: + executeInvokeMethod(bb, os); + break; + case JdwpConstants.CommandSet.ClassType.NEW_INSTANCE: + executeNewInstance(bb, os); + break; + default: + throw new NotImplementedException("Command " + command + + " not found in ClassType 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 false; + } + + private void executeSuperclass(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + ReferenceTypeId refId = idMan.readReferenceTypeId(bb); + Class clazz = refId.getType(); + Class superClazz = clazz.getSuperclass(); + + if (superClazz == null) { + os.writeLong(0L); + } else { + ReferenceTypeId clazzId = idMan.getReferenceTypeId(superClazz); + clazzId.write(os); + } + } + + private void executeSetValues(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + ReferenceTypeId refId = idMan.readReferenceTypeId(bb); + + // We don't actually seem to need this... + Class clazz = refId.getType(); + + int numValues = bb.getInt(); + + for (int i = 0; i < numValues; i++) + { + ObjectId fieldId = idMan.readObjectId(bb); + Field field = (Field) (fieldId.getObject()); + Object value = Value.getUntaggedObject(bb, field.getType()); + try + { + field.setAccessible(true); // Might be a private field + field.set(null, value); + } + catch (IllegalArgumentException ex) + { + throw new InvalidFieldException(ex); + } + catch (IllegalAccessException ex) + { // Since we set it as accessible this really shouldn't happen + throw new JdwpInternalErrorException(ex); + } + } + } + + private void executeInvokeMethod(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + MethodResult mr = invokeMethod(bb); + + Throwable exception = mr.getThrownException(); + ObjectId eId = idMan.getObjectId(exception); + mr.getReturnedValue().writeTagged(os); + eId.writeTagged(os); + } + + private void executeNewInstance(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + MethodResult mr = invokeMethod(bb); + Throwable exception = mr.getThrownException(); + + if (exception == null && ! (mr.getReturnedValue() instanceof ObjectValue)) + throw new JdwpInternalErrorException("new instance returned non-object"); + + ObjectValue ov = (ObjectValue) mr.getReturnedValue(); + ObjectId oId = idMan.getObjectId(ov.getValue()); + + ObjectId eId = idMan.getObjectId(exception); + + oId.writeTagged(os); + eId.writeTagged(os); + } + + /** + * Execute the static method and return the resulting MethodResult. + */ + private MethodResult invokeMethod(ByteBuffer bb) + throws JdwpException, IOException + { + ReferenceTypeId refId = idMan.readReferenceTypeId(bb); + Class clazz = refId.getType(); + + ObjectId tId = idMan.readObjectId(bb); + Thread thread = (Thread) tId.getObject(); + + VMMethod method = VMMethod.readId(clazz, bb); + + int args = bb.getInt(); + Value[] values = new Value[args]; + + for (int i = 0; i < args; i++) + values[i] = ValueFactory.createFromTagged(bb); + + int invokeOpts = bb.getInt(); + MethodResult mr = VMVirtualMachine.executeMethod(null, thread, + clazz, method, + values, invokeOpts); + return mr; + } +} |