com.sun.squawk.debugger
Class JDWPListener.CommandSet

java.lang.Object
  com.sun.squawk.debugger.JDWPListener.CommandSet

Enclosing class:

JDWPListener

public abstract static class JDWPListener.CommandSet
extends Object

The implementation of each JDWP Command Set subclasses this class.

Field Summary

protected CommandPacket	command The command currently being processed.
protected PacketInputStream	in Stream from which data of current command is read.
protected PacketOutputStream	out Stream to which data in reply is written.
protected ReplyPacket	reply The reply to the current command.

Constructor Summary

JDWPListener.CommandSet()

Method Summary

protected abstract boolean	dispatch() Dispatches to the handler for the specific command in the command set.
protected void	error(int errorCode) Used by subclasses to change the error code sent in the reply.
boolean	handle(JDWPListener listener, CommandPacket command) Handles a command packet by setting up the variables used to interpret and reply to the command and then dispatching to the specific command handler.
protected void	postDispatch() A hook for the handler to do any post-processing after it has handled a command and the reply was sent (if applicable).
protected void	unimplemented() Reports that the JDWP/SDWP command is not (currently) implemented.

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

command

protected CommandPacket command

The command currently being processed.

reply

protected ReplyPacket reply

The reply to the current command.

in

protected PacketInputStream in

Stream from which data of current command is read.

out

protected PacketOutputStream out

Stream to which data in reply is written.

Constructor Detail

JDWPListener.CommandSet

public JDWPListener.CommandSet()

Method Detail

handle

public final boolean handle(JDWPListener listener,
                            CommandPacket command)
                     throws IOException

Handles a command packet by setting up the variables used to interpret and reply to the command and then dispatching to the specific command handler.

Parameters:

listener - the listener to reply through

command - the command to be handled

Returns:

boolean true if the command was recognised and a reply was sent

Throws:

IOException - if there was an IO error while sending a reply

dispatch

protected abstract boolean dispatch()
                             throws IOException,
                                    SDWPException

Dispatches to the handler for the specific command in the command set.

Returns:

true if the handler generated a reply which must now be sent

Throws:

IOException - if an IO error occurs

SDWPException - if a JDWP/SDWP protocol error occurs

error

protected final void error(int errorCode)

Used by subclasses to change the error code sent in the reply.

Parameters:

errorCode - the new error code

unimplemented

protected final void unimplemented()

Reports that the JDWP/SDWP command is not (currently) implemented.

postDispatch

protected void postDispatch()

A hook for the handler to do any post-processing after it has handled a command and the reply was sent (if applicable).