/*******************************************************************************
* Copyright (c) 2000, 2011 IBM Corporation and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdi.internal.jdwp;
import java.io.IOException;
import java.lang.reflect.Field;
import java.lang.reflect.Modifier;
import java.util.HashMap;
import java.util.Map;
/**
* This class implements the corresponding Java Debug Wire Protocol (JDWP)
* packet declared by the JDWP specification.
*
*/
public class JdwpReplyPacket extends JdwpPacket {
/** Error code constants. */
public static final short NONE = 0;
public static final short INVALID_THREAD = 10;
public static final short INVALID_THREAD_GROUP = 11;
public static final short INVALID_PRIORITY = 12;
public static final short THREAD_NOT_SUSPENDED = 13;
public static final short THREAD_SUSPENDED = 14;
public static final short THREAD_NOT_ALIVE = 15;
public static final short INVALID_OBJECT = 20;
public static final short INVALID_CLASS = 21;
public static final short CLASS_NOT_PREPARED = 22;
public static final short INVALID_METHODID = 23;
public static final short INVALID_LOCATION = 24;
public static final short INVALID_FIELDID = 25;
public static final short INVALID_FRAMEID = 30;
public static final short NO_MORE_FRAMES = 31;
public static final short OPAQUE_FRAME = 32;
public static final short NOT_CURRENT_FRAME = 33;
public static final short TYPE_MISMATCH = 34;
public static final short INVALID_SLOT = 35;
public static final short DUPLICATE = 40;
public static final short NOT_FOUND = 41;
public static final short INVALID_MONITOR = 50;
public static final short NOT_MONITOR_OWNER = 51;
public static final short INTERRUPT = 52;
public static final short INVALID_CLASS_FORMAT = 60;
public static final short CIRCULAR_CLASS_DEFINITION = 61;
public static final short FAILS_VERIFICATION = 62;
public static final short ADD_METHOD_NOT_IMPLEMENTED = 63;
public static final short SCHEMA_CHANGE_NOT_IMPLEMENTED = 64;
public static final short INVALID_TYPESTATE = 65;
public static final short HIERARCHY_CHANGE_NOT_IMPLEMENTED = 66;
public static final short DELETE_METHOD_NOT_IMPLEMENTED = 67;
public static final short UNSUPPORTED_VERSION = 68;
public static final short NAMES_DONT_MATCH = 69;
public static final short CLASS_MODIFIERS_CHANGE_NOT_IMPLEMENTED = 70;
public static final short METHOD_MODIFIERS_CHANGE_NOT_IMPLEMENTED = 71;
public static final short NOT_IMPLEMENTED = 99;
public static final short NULL_POINTER = 100;
public static final short ABSENT_INFORMATION = 101;
public static final short INVALID_EVENT_TYPE = 102;
public static final short ILLEGAL_ARGUMENT = 103;
public static final short OUT_OF_MEMORY = 110;
public static final short ACCESS_DENIED = 111;
public static final short VM_DEAD = 112;
public static final short INTERNAL = 113;
public static final short UNATTACHED_THREAD = 115;
public static final short INVALID_TAG = 500;
public static final short ALREADY_INVOKING = 502;
public static final short INVALID_INDEX = 503;
public static final short INVALID_LENGTH = 504;
public static final short INVALID_STRING = 506;
public static final short INVALID_CLASS_LOADER = 507;
public static final short INVALID_ARRAY = 508;
public static final short TRANSPORT_LOAD = 509;
public static final short TRANSPORT_INIT = 510;
public static final short NATIVE_METHOD = 511;
public static final short INVALID_COUNT = 512;
public static final short HCR_OPERATION_REFUSED = 900; // HCR specific.
/** Mapping of error codes to strings. */
private static HashMap<Integer, String> fErrorMap = null;
/** JDWP Error code. */
private short fErrorCode;
/**
* Creates new JdwpReplyPacket.
*/
public JdwpReplyPacket() {
setFlags(FLAG_REPLY_PACKET);
}
/**
* @return Returns JDWP Error code.
*/
public short errorCode() {
return fErrorCode;
}
/**
* Assigns JDWP Error code.
*/
public void setErrorCode(short newValue) {
fErrorCode = newValue;
}
/**
* Reads header fields that are specific for this type of packet.
*/
@Override
protected int readSpecificHeaderFields(byte[] bytes, int index)
throws IOException {
fErrorCode = (short) (((bytes[index] & 0xFF) << 8) + ((bytes[index + 1] & 0xFF) << 0));
return 2;
}
/**
* Writes header fields that are specific for this type of packet.
*/
@Override
protected int writeSpecificHeaderFields(byte[] bytes, int index)
throws IOException {
bytes[index] = (byte) ((fErrorCode >>> 8) & 0xFF);
bytes[index + 1] = (byte) ((fErrorCode >>> 0) & 0xFF);
return 2;
}
/**
* Retrieves constant mappings.
*/
public static void getConstantMaps() {
if (fErrorMap != null) {
return;
}
Field[] fields = JdwpReplyPacket.class.getDeclaredFields();
fErrorMap = new HashMap<>(fields.length);
for (Field field : fields) {
if ((field.getModifiers() & Modifier.PUBLIC) == 0
|| (field.getModifiers() & Modifier.STATIC) == 0
|| (field.getModifiers() & Modifier.FINAL) == 0)
continue;
try {
Integer intValue = new Integer(field.getInt(null));
fErrorMap.put(intValue, field.getName());
} catch (IllegalAccessException e) {
// Will not occur for own class.
} catch (IllegalArgumentException e) {
// Should not occur.
// We should take care that all public static final constants
// in this class are numbers that are convertible to int.
}
}
}
/**
* @return Returns a map with string representations of error codes.
*/
public static Map<Integer, String> errorMap() {
getConstantMaps();
return fErrorMap;
}
/*
* (non-Javadoc)
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
StringBuffer buffer = new StringBuffer();
buffer.append("["); //$NON-NLS-1$
buffer.append(getId());
buffer.append("] "); //$NON-NLS-1$
buffer.append("(reply)"); //$NON-NLS-1$
short ec = errorCode();
if (ec != NONE) {
buffer.append(" ERROR CODE: "); //$NON-NLS-1$
buffer.append(ec);
}
return buffer.toString();
}
}