/* CommandSet.java -- An interface defining JDWP Command Sets
   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
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
General Public License for more details.

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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
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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
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package gnu.classpath.jdwp.processor;

import gnu.classpath.jdwp.exception.JdwpException;
import gnu.classpath.jdwp.VMIdManager;

import java.io.DataOutputStream;
import java.nio.ByteBuffer;

/**
 * A class representing a JDWP Command Set. This class serves as a generic
 * interface for all Command Sets types used by JDWP.
 *
 * @author Aaron Luchko <aluchko@redhat.com>
 */
public abstract class CommandSet
{
  /**
   * The VM's ID manager
   */
  protected final VMIdManager idMan = VMIdManager.getDefault ();

  /**
   * Runs the given command with the data in distr and writes the data for the
   * reply packet to ostr.
   * 
   * @param bb holds the data portion of the Command Packet
   * @param os data portion of the Reply Packet will be written here
   * @param command the command field of the Command Packet
   * @return true if the JDWP layer should shut down in response to this packet
   * @throws JdwpException command wasn't carried out successfully
   */
  public abstract boolean runCommand(ByteBuffer bb, DataOutputStream os,
				     byte command) 
    throws JdwpException;
}