| /* JdwpReplyPacket.java -- JDWP reply packet |
| 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 |
| 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.transport; |
| |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| |
| /** |
| * A class represents a JDWP reply packet. |
| * This class adds an error code to the packet header information |
| * in {@link gnu.classpath.jdwp.transport.JdwpPacket} and adds additional |
| * reply packet-specific processing. |
| * |
| * @author Keith Seitz <keiths@redhat.com> |
| */ |
| public class JdwpReplyPacket extends JdwpPacket |
| { |
| /** |
| * Error code |
| */ |
| protected short _errorCode; |
| |
| // Minimum packet size [excluding super class] ( errorCode (2) ) |
| private static final int MINIMUM_LENGTH = 2; |
| |
| /** |
| * Constructs a <code>JdwpReplyPacket</code>. |
| */ |
| public JdwpReplyPacket () |
| { |
| // Don't assign a packet id. This is called by JdwpPacket.fromBytes |
| // which assigns a packet id. (Not that a VM would do that...) |
| } |
| |
| /** |
| * Constructs a <code>JdwpReplyPacket</code> with the |
| * id from the given packet and error code |
| * |
| * @param pkt the packet whose id this packet will use |
| * @param errorCode the error code |
| */ |
| public JdwpReplyPacket (JdwpPacket pkt, short errorCode) |
| { |
| this(pkt); |
| _errorCode = errorCode; |
| } |
| |
| /** |
| * Constructs a <code>JdwpReplyPacket</code> with the |
| * id from the given packet and an empty error code |
| * |
| * @param pkt the packet whose id this packet will use |
| */ |
| public JdwpReplyPacket (JdwpPacket pkt) |
| { |
| super (pkt); |
| _flags = (byte) JDWP_FLAG_REPLY; |
| } |
| |
| /** |
| * Returns the length of this packet |
| */ |
| public int getLength () |
| { |
| return MINIMUM_LENGTH + super.getLength (); |
| } |
| |
| /** |
| * Returns the error code |
| */ |
| public short getErrorCode () |
| { |
| return _errorCode; |
| } |
| |
| /** |
| * Sets the error code |
| */ |
| public void setErrorCode (short ec) |
| { |
| _errorCode = ec; |
| } |
| |
| // Reads command packet data from the given buffer, starting |
| // at the given offset |
| protected int myFromBytes (byte[] bytes, int index) |
| { |
| int i = 0; |
| setErrorCode ((short) ((bytes[index + i++] & 0xff) << 8 |
| | (bytes[index + i++] & 0xff))); |
| return i; |
| } |
| |
| // Writes the command packet data into the given buffer |
| protected void myWrite (DataOutputStream dos) |
| throws IOException |
| { |
| dos.writeShort (getErrorCode ()); |
| } |
| } |