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Diffstat (limited to 'gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/transport/JdwpReplyPacket.java')
-rw-r--r-- | gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/transport/JdwpReplyPacket.java | 137 |
1 files changed, 137 insertions, 0 deletions
diff --git a/gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/transport/JdwpReplyPacket.java b/gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/transport/JdwpReplyPacket.java new file mode 100644 index 000000000..d060dec99 --- /dev/null +++ b/gcc-4.4.3/libjava/classpath/gnu/classpath/jdwp/transport/JdwpReplyPacket.java @@ -0,0 +1,137 @@ +/* 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 ()); + } +} |