149 lines
4.1 KiB
Java
149 lines
4.1 KiB
Java
/*
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* Copyright (c) 2001, 2018, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package nsk.share.jdwp;
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import nsk.share.*;
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/**
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* This class represents a JDWP command packet.
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*/
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public class CommandPacket extends Packet {
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/**
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* Static counter for enumeration of the command packets.
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*/
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private static int nextID = 1;
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/**
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* Return next free number for enumeration of the command packets.
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*/
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public static int getLastID() {
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return (nextID - 1);
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}
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/**
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* Make JDWP command packet for specified command.
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*/
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public CommandPacket(int fullCommand) {
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super();
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setPacketID(nextID++);
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setFlags(JDWP.Flag.NONE);
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setFullCommand(fullCommand);
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}
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/**
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* Make JDWP command packet for specified command.
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*/
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public CommandPacket(int fullCommand, int id) {
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super();
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setPacketID(id);
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setFlags(JDWP.Flag.NONE);
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setFullCommand(fullCommand);
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}
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/**
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* Make command packet with data from the specified byte buffer.
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*/
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// public CommandPacket(ByteBuffer packet) {
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public CommandPacket(Packet packet) {
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super(packet);
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}
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/**
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* Return full command number for this packet.
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*/
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public int getFullCommand() {
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int id = 0;
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try {
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id = (int) getID(FullCommandOffset, 2);
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}
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catch (BoundException e) {
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throw new Failure("Caught unexpected exception while getting command number from header:\n\t"
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+ e);
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}
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return id;
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}
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/**
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* Return short command number for this packet.
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*/
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public byte getCommand() {
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byte id = 0;
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try {
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id = getByte(CommandOffset);
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}
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catch (BoundException e) {
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throw new Failure("Caught unexpected exception while getting command number from header:\n\t"
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+ e);
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}
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return id;
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}
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/**
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* Return command set number for this packet.
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*/
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public byte getCommandSet() {
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byte id = 0;
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try {
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id = getByte(CommandSetOffset);
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}
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catch (BoundException e) {
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throw new Failure("Caught unexpected exception while getting command number from header:\n\t"
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+ e);
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}
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return id;
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}
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/**
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* Assign command number for this packet.
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*/
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public void setFullCommand(int fullCommand) {
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try {
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putID(FullCommandOffset, fullCommand, 2);
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}
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catch (BoundException e) {
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throw new Failure("Caught unexpected exception while setting command number into header: "
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+ e);
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}
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}
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/**
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* Return string representation of the command packet header.
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*/
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public String headerToString() {
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return super.headerToString()
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+ " " + toHexString(CommandSetOffset, 4) + " (cmd set): 0x" + toHexDecString(getCommandSet(), 2) + "\n"
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+ " " + toHexString(CommandOffset, 4) + " (command): 0x" + toHexDecString(getCommand(), 2) + "\n";
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}
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}
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