diff options
Diffstat (limited to 'libjava/classpath/gnu/classpath/jdwp/processor/ReferenceTypeCommandSet.java')
| -rw-r--r-- | libjava/classpath/gnu/classpath/jdwp/processor/ReferenceTypeCommandSet.java | 321 |
1 files changed, 321 insertions, 0 deletions
diff --git a/libjava/classpath/gnu/classpath/jdwp/processor/ReferenceTypeCommandSet.java b/libjava/classpath/gnu/classpath/jdwp/processor/ReferenceTypeCommandSet.java new file mode 100644 index 00000000000..34def9f2d07 --- /dev/null +++ b/libjava/classpath/gnu/classpath/jdwp/processor/ReferenceTypeCommandSet.java @@ -0,0 +1,321 @@ +/* ReferenceTypeCommandSet.java -- lass to implement the ReferenceType + 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.JdwpString; +import gnu.classpath.jdwp.util.Signature; +import gnu.classpath.jdwp.util.Value; + +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 ReferenceType Command Set. + * + * @author Aaron Luchko <aluchko@redhat.com> + */ +public class ReferenceTypeCommandSet 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.ReferenceType.SIGNATURE: + executeSignature(bb, os); + break; + case JdwpConstants.CommandSet.ReferenceType.CLASS_LOADER: + executeClassLoader(bb, os); + break; + case JdwpConstants.CommandSet.ReferenceType.MODIFIERS: + executeModifiers(bb, os); + break; + case JdwpConstants.CommandSet.ReferenceType.FIELDS: + executeFields(bb, os); + break; + case JdwpConstants.CommandSet.ReferenceType.METHODS: + executeMethods(bb, os); + break; + case JdwpConstants.CommandSet.ReferenceType.GET_VALUES: + executeGetValues(bb, os); + break; + case JdwpConstants.CommandSet.ReferenceType.SOURCE_FILE: + executeSourceFile(bb, os); + break; + case JdwpConstants.CommandSet.ReferenceType.NESTED_TYPES: + executeNestedTypes(bb, os); + break; + case JdwpConstants.CommandSet.ReferenceType.STATUS: + executeStatus(bb, os); + break; + case JdwpConstants.CommandSet.ReferenceType.INTERFACES: + executeInterfaces(bb, os); + break; + case JdwpConstants.CommandSet.ReferenceType.CLASS_OBJECT: + executeClassObject(bb, os); + break; + case JdwpConstants.CommandSet.ReferenceType.SOURCE_DEBUG_EXTENSION: + executeSourceDebugExtension(bb, os); + break; + case JdwpConstants.CommandSet.ReferenceType.SIGNATURE_WITH_GENERIC: + executeSignatureWithGeneric(bb, os); + break; + case JdwpConstants.CommandSet.ReferenceType.FIELDS_WITH_GENERIC: + executeFieldWithGeneric(bb, os); + break; + case JdwpConstants.CommandSet.ReferenceType.METHODS_WITH_GENERIC: + executeMethodsWithGeneric(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 executeSignature(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + ReferenceTypeId refId = idMan.readReferenceTypeId(bb); + String sig = Signature.computeClassSignature(refId.getType()); + JdwpString.writeString(os, sig); + } + + private void executeClassLoader(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + ReferenceTypeId refId = idMan.readReferenceTypeId(bb); + + Class clazz = refId.getType(); + ClassLoader loader = clazz.getClassLoader(); + ObjectId oid = idMan.getId(loader); + oid.write(os); + } + + private void executeModifiers(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + ReferenceTypeId refId = idMan.readReferenceTypeId(bb); + + Class clazz = refId.getType(); + os.writeInt(clazz.getModifiers()); + } + + private void executeFields(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + ReferenceTypeId refId = idMan.readReferenceTypeId(bb); + Class clazz = refId.getType(); + + Field[] fields = clazz.getFields(); + os.writeInt(fields.length); + for (int i = 0; i < fields.length; i++) + { + Field field = fields[i]; + idMan.getId(field).write(os); + JdwpString.writeString(os, field.getName()); + JdwpString.writeString(os, Signature.computeFieldSignature(field)); + os.writeInt(field.getModifiers()); + } + } + + private void executeMethods(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + ReferenceTypeId refId = idMan.readReferenceTypeId(bb); + Class clazz = refId.getType(); + + Method[] methods = clazz.getMethods(); + os.writeInt(methods.length); + for (int i = 0; i < methods.length; i++) + { + Method method = methods[i]; + idMan.getId(method).write(os); + JdwpString.writeString(os, method.getName()); + JdwpString.writeString(os, Signature.computeMethodSignature(method)); + os.writeInt(method.getModifiers()); + } + } + + private void executeGetValues(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + ReferenceTypeId refId = idMan.readReferenceTypeId(bb); + Class clazz = refId.getType(); + + int numFields = bb.getInt(); + os.writeInt(numFields); // Looks pointless but this is the protocol + for (int i = 0; i < numFields; i++) + { + ObjectId fieldId = idMan.readId(bb); + Field field = (Field) (fieldId.getObject()); + Class fieldClazz = field.getDeclaringClass(); + + // We don't actually need the clazz to get the field but we might as + // well check that the debugger got it right + if (fieldClazz.isAssignableFrom(clazz)) + Value.writeStaticValueFromField(os, field); + else + throw new InvalidFieldException(fieldId.getId()); + } + } + + private void executeSourceFile(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + ReferenceTypeId refId = idMan.readReferenceTypeId(bb); + Class clazz = refId.getType(); + + // We'll need to go into the jvm for this unless there's an easier way + String sourceFileName = vm.getSourceFile(clazz); + JdwpString.writeString(os, sourceFileName); + // clazz.getProtectionDomain().getCodeSource().getLocation(); + } + + private void executeNestedTypes(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + ReferenceTypeId refId = idMan.readReferenceTypeId(bb); + Class clazz = refId.getType(); + Class[] declaredClazzes = clazz.getDeclaredClasses(); + os.writeInt(declaredClazzes.length); + for (int i = 0; i < declaredClazzes.length; i++) + { + Class decClazz = declaredClazzes[i]; + ReferenceTypeId clazzId = idMan.getReferenceTypeId(decClazz); + clazzId.writeTagged(os); + } + } + + private void executeStatus(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + ReferenceTypeId refId = idMan.readReferenceTypeId(bb); + Class clazz = refId.getType(); + + // I don't think there's any other way to get this + int status = vm.getStatus(clazz); + os.writeInt(status); + } + + private void executeInterfaces(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + ReferenceTypeId refId = idMan.readReferenceTypeId(bb); + Class clazz = refId.getType(); + Class[] interfaces = clazz.getInterfaces(); + os.writeInt(interfaces.length); + for (int i = 0; i < interfaces.length; i++) + { + Class interfaceClass = interfaces[i]; + ReferenceTypeId intId = idMan.getReferenceTypeId(interfaceClass); + intId.write(os); + } + } + + private void executeClassObject(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + ReferenceTypeId refId = idMan.readReferenceTypeId(bb); + Class clazz = refId.getType(); + ObjectId clazzObjectId = idMan.getId(clazz); + clazzObjectId.write(os); + } + + private void executeSourceDebugExtension(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + // This command is optional, determined by VirtualMachines CapabilitiesNew + // so we'll leave it till later to implement + throw new NotImplementedException( + "Command SourceDebugExtension not implemented."); + } + + private void executeSignatureWithGeneric(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + // We don't have generics yet + throw new NotImplementedException( + "Command SourceDebugExtension not implemented."); + } + + private void executeFieldWithGeneric(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + // We don't have generics yet + throw new NotImplementedException( + "Command SourceDebugExtension not implemented."); + } + + private void executeMethodsWithGeneric(ByteBuffer bb, DataOutputStream os) + throws JdwpException, IOException + { + // We don't have generics yet + throw new NotImplementedException( + "Command SourceDebugExtension not implemented."); + } +} |
