org.eclipse.jdt.debug/jdi/org/eclipse/jdi/internal/event/EventImpl.java - jdt/eclipse.jdt.debug - Git at Google

 /*******************************************************************************
  * Copyright (c) 2000, 2012 IBM Corporation and others.
  *
  * This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License 2.0
  * which accompanies this distribution, and is available at
  * https://www.eclipse.org/legal/epl-2.0/
  *
  * SPDX-License-Identifier: EPL-2.0
  *
  * Contributors:
  *     IBM Corporation - initial API and implementation
  *******************************************************************************/
 package org.eclipse.jdi.internal.event;

 import java.io.DataInputStream;
 import java.io.IOException;
 import java.lang.reflect.Field;
 import java.util.HashMap;
 import java.util.Map;

 import org.eclipse.jdi.internal.MirrorImpl;
 import org.eclipse.jdi.internal.ThreadReferenceImpl;
 import org.eclipse.jdi.internal.VirtualMachineImpl;
 import org.eclipse.jdi.internal.request.RequestID;

 import com.sun.jdi.ThreadReference;
 import com.sun.jdi.event.Event;
 import com.sun.jdi.request.EventRequest;

 /**
  * This class implements the corresponding interfaces declared by the JDI
  * specification. See the com.sun.jdi package for more information.
  *
  */
 public abstract class EventImpl extends MirrorImpl implements Event {
 	/** Constants for EventKind. */
 	public static final byte EVENT_SINGLE_STEP = 1;
 	public static final byte EVENT_BREAKPOINT = 2;
 	public static final byte EVENT_FRAME_POP = 3;
 	public static final byte EVENT_EXCEPTION = 4;
 	public static final byte EVENT_USER_DEFINED = 5;
 	public static final byte EVENT_THREAD_START = 6;
 	public static final byte EVENT_THREAD_END = 7;
 	public static final byte EVENT_CLASS_PREPARE = 8;
 	public static final byte EVENT_CLASS_UNLOAD = 9;
 	public static final byte EVENT_CLASS_LOAD = 10;
 	public static final byte EVENT_FIELD_ACCESS = 20;
 	public static final byte EVENT_FIELD_MODIFICATION = 21;
 	public static final byte EVENT_EXCEPTION_CATCH = 30;
 	public static final byte EVENT_METHOD_ENTRY = 40;
 	public static final byte EVENT_METHOD_EXIT = 41;
 	public static final byte EVENT_METHOD_EXIT_WITH_RETURN_VALUE = 42;
 	public static final byte EVENT_MONITOR_CONTENDED_ENTER = 43;
 	public static final byte EVENT_MONITOR_CONTENDED_ENTERED = 44;
 	public static final byte EVENT_MONITOR_WAIT = 45;
 	public static final byte EVENT_MONITOR_WAITED = 46;
 	public static final byte EVENT_VM_INIT = 90;
 	public static final byte EVENT_VM_DEATH = 99;
 	public static final byte EVENT_VM_DISCONNECTED = 100; // Never sent by
 															// across JDWP.
 	public static final byte EVENT_VM_START = EVENT_VM_INIT;
 	public static final byte EVENT_THREAD_DEATH = EVENT_THREAD_END;

 	/** ThreadReference of thread that generated this event. */
 	protected ThreadReferenceImpl fThreadRef;

 	/** Mapping of command codes to strings. */
 	private static HashMap<Integer, String> fEventKindMap = null;

 	/** Request ID of event. */
 	private RequestID fRequestID;

 	/** The EventRequest that requested this event. */
 	private EventRequest fRequest;

 	/**
 	 * Creates new EventImpl, only used by subclasses.
 	 */
 	protected EventImpl(String description, VirtualMachineImpl vmImpl,
 			RequestID requestID) {
 		super(description, vmImpl);
 		fRequestID = requestID;
 	}

 	/**
 	 * @return Returns ThreadReference of thread that generated this event.
 	 */
 	public ThreadReference thread() {
 		return fThreadRef;
 	}

 	/**
 	 * @return Returns requestID.
 	 */
 	public RequestID requestID() {
 		return fRequestID;
 	}

 	/**
 	 * @return Returns string representation.
 	 */
 	@Override
 	public String toString() {
 		return super.toString() + ": " + fRequestID; //$NON-NLS-1$
 	}

 	/**
 	 * @return Creates, reads and returns new EventImpl.
 	 */
 	public static EventImpl read(MirrorImpl target, DataInputStream dataInStream)
 			throws IOException {
 		byte eventKind = target.readByte(
 				"event kind", eventKindMap(), dataInStream); //$NON-NLS-1$
 		RequestID requestID = RequestID.read(target, dataInStream);

 		// Create, read and return Event of eventKind.
 		EventImpl result;
 		switch (eventKind) {
 		case 0:
 			return null;
 		case AccessWatchpointEventImpl.EVENT_KIND:
 			result = AccessWatchpointEventImpl.read(target, requestID,
 					dataInStream);
 			break;
 		case BreakpointEventImpl.EVENT_KIND:
 			result = BreakpointEventImpl.read(target, requestID, dataInStream);
 			break;
 		case ClassPrepareEventImpl.EVENT_KIND:
 			result = ClassPrepareEventImpl
 					.read(target, requestID, dataInStream);
 			break;
 		case ClassUnloadEventImpl.EVENT_KIND:
 			result = ClassUnloadEventImpl.read(target, requestID, dataInStream);
 			break;
 		case ExceptionEventImpl.EVENT_KIND:
 			result = ExceptionEventImpl.read(target, requestID, dataInStream);
 			break;
 		case MethodEntryEventImpl.EVENT_KIND:
 			result = MethodEntryEventImpl.read(target, requestID, dataInStream);
 			break;
 		case MethodExitEventImpl.EVENT_KIND:
 			result = MethodExitEventImpl.read(target, requestID, dataInStream);
 			break;
 		case EVENT_METHOD_EXIT_WITH_RETURN_VALUE:
 			result = MethodExitEventImpl.readWithReturnValue(target, requestID,
 					dataInStream);
 			break;
 		case MonitorContendedEnteredEventImpl.EVENT_KIND:
 			result = MonitorContendedEnteredEventImpl.read(target, requestID,
 					dataInStream);
 			break;
 		case MonitorContendedEnterEventImpl.EVENT_KIND:
 			result = MonitorContendedEnterEventImpl.read(target, requestID,
 					dataInStream);
 			break;
 		case MonitorWaitedEventImpl.EVENT_KIND:
 			result = MonitorWaitedEventImpl.read(target, requestID,
 					dataInStream);
 			break;
 		case MonitorWaitEventImpl.EVENT_KIND:
 			result = MonitorWaitEventImpl.read(target, requestID, dataInStream);
 			break;
 		case ModificationWatchpointEventImpl.EVENT_KIND:
 			result = ModificationWatchpointEventImpl.read(target, requestID,
 					dataInStream);
 			break;
 		case StepEventImpl.EVENT_KIND:
 			result = StepEventImpl.read(target, requestID, dataInStream);
 			break;
 		case ThreadDeathEventImpl.EVENT_KIND:
 			result = ThreadDeathEventImpl.read(target, requestID, dataInStream);
 			break;
 		case ThreadStartEventImpl.EVENT_KIND:
 			result = ThreadStartEventImpl.read(target, requestID, dataInStream);
 			break;
 		case VMDeathEventImpl.EVENT_KIND:
 			result = VMDeathEventImpl.read(target, requestID, dataInStream);
 			break;
 		case VMDisconnectEventImpl.EVENT_KIND:
 			result = VMDisconnectEventImpl
 					.read(target, requestID, dataInStream);
 			break;
 		case VMStartEventImpl.EVENT_KIND:
 			result = VMStartEventImpl.read(target, requestID, dataInStream);
 			break;
 		default:
 			throw new IOException(
 					EventMessages.EventImpl_Read_invalid_EventKind___1
 							+ eventKind);
 		}

 		// Find and store original request.
 		if (!requestID.isNull())
 			result.fRequest = target.virtualMachineImpl().eventRequestManagerImpl().findRequest(result);

 		return result;
 	}

 	/**
 	 * @return Returns EventRequest that caused this event to be generated by
 	 *         the Virtual Machine.
 	 */
 	@Override
 	public EventRequest request() {
 		return fRequest;
 	}

 	/**
 	 * Retrieves constant mappings.
 	 */
 	public static void getConstantMaps() {
 		if (fEventKindMap != null)
 			return;

 		java.lang.reflect.Field[] fields = EventImpl.class.getDeclaredFields();
 		fEventKindMap = new HashMap<>();
 		for (Field field : fields) {
 			if ((field.getModifiers() & java.lang.reflect.Modifier.PUBLIC) == 0
 					|| (field.getModifiers() & java.lang.reflect.Modifier.STATIC) == 0
 					|| (field.getModifiers() & java.lang.reflect.Modifier.FINAL) == 0)
 				continue;

 			try {
 				String name = field.getName();
 				Integer intValue = Integer.valueOf(field.getInt(null));

 				if (name.startsWith("EVENT_")) { //$NON-NLS-1$
 					name = name.substring(6);
 					fEventKindMap.put(intValue, name);
 				}
 			} 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 tags.
 	 */
 	public static Map<Integer, String> eventKindMap() {
 		getConstantMaps();
 		return fEventKindMap;
 	}
 }
	/*******************************************************************************
	* Copyright (c) 2000, 2012 IBM Corporation and others.
	*
	* This program and the accompanying materials
	* are made available under the terms of the Eclipse Public License 2.0
	* which accompanies this distribution, and is available at
	* https://www.eclipse.org/legal/epl-2.0/
	*
	* SPDX-License-Identifier: EPL-2.0
	*
	* Contributors:
	* IBM Corporation - initial API and implementation
	*******************************************************************************/
	package org.eclipse.jdi.internal.event;

	import java.io.DataInputStream;
	import java.io.IOException;
	import java.lang.reflect.Field;
	import java.util.HashMap;
	import java.util.Map;

	import org.eclipse.jdi.internal.MirrorImpl;
	import org.eclipse.jdi.internal.ThreadReferenceImpl;
	import org.eclipse.jdi.internal.VirtualMachineImpl;
	import org.eclipse.jdi.internal.request.RequestID;

	import com.sun.jdi.ThreadReference;
	import com.sun.jdi.event.Event;
	import com.sun.jdi.request.EventRequest;

	/**
	* This class implements the corresponding interfaces declared by the JDI
	* specification. See the com.sun.jdi package for more information.
	*
	*/
	public abstract class EventImpl extends MirrorImpl implements Event {
	/** Constants for EventKind. */
	public static final byte EVENT_SINGLE_STEP = 1;
	public static final byte EVENT_BREAKPOINT = 2;
	public static final byte EVENT_FRAME_POP = 3;
	public static final byte EVENT_EXCEPTION = 4;
	public static final byte EVENT_USER_DEFINED = 5;
	public static final byte EVENT_THREAD_START = 6;
	public static final byte EVENT_THREAD_END = 7;
	public static final byte EVENT_CLASS_PREPARE = 8;
	public static final byte EVENT_CLASS_UNLOAD = 9;
	public static final byte EVENT_CLASS_LOAD = 10;
	public static final byte EVENT_FIELD_ACCESS = 20;
	public static final byte EVENT_FIELD_MODIFICATION = 21;
	public static final byte EVENT_EXCEPTION_CATCH = 30;
	public static final byte EVENT_METHOD_ENTRY = 40;
	public static final byte EVENT_METHOD_EXIT = 41;
	public static final byte EVENT_METHOD_EXIT_WITH_RETURN_VALUE = 42;
	public static final byte EVENT_MONITOR_CONTENDED_ENTER = 43;
	public static final byte EVENT_MONITOR_CONTENDED_ENTERED = 44;
	public static final byte EVENT_MONITOR_WAIT = 45;
	public static final byte EVENT_MONITOR_WAITED = 46;
	public static final byte EVENT_VM_INIT = 90;
	public static final byte EVENT_VM_DEATH = 99;
	public static final byte EVENT_VM_DISCONNECTED = 100; // Never sent by
	// across JDWP.
	public static final byte EVENT_VM_START = EVENT_VM_INIT;
	public static final byte EVENT_THREAD_DEATH = EVENT_THREAD_END;

	/** ThreadReference of thread that generated this event. */
	protected ThreadReferenceImpl fThreadRef;

	/** Mapping of command codes to strings. */
	private static HashMap<Integer, String> fEventKindMap = null;

	/** Request ID of event. */
	private RequestID fRequestID;

	/** The EventRequest that requested this event. */
	private EventRequest fRequest;

	/**
	* Creates new EventImpl, only used by subclasses.
	*/
	protected EventImpl(String description, VirtualMachineImpl vmImpl,
	RequestID requestID) {
	super(description, vmImpl);
	fRequestID = requestID;
	}

	/**
	* @return Returns ThreadReference of thread that generated this event.
	*/
	public ThreadReference thread() {
	return fThreadRef;
	}

	/**
	* @return Returns requestID.
	*/
	public RequestID requestID() {
	return fRequestID;
	}

	/**
	* @return Returns string representation.
	*/
	@Override
	public String toString() {
	return super.toString() + ": " + fRequestID; //$NON-NLS-1$
	}

	/**
	* @return Creates, reads and returns new EventImpl.
	*/
	public static EventImpl read(MirrorImpl target, DataInputStream dataInStream)
	throws IOException {
	byte eventKind = target.readByte(
	"event kind", eventKindMap(), dataInStream); //$NON-NLS-1$
	RequestID requestID = RequestID.read(target, dataInStream);

	// Create, read and return Event of eventKind.
	EventImpl result;
	switch (eventKind) {
	case 0:
	return null;
	case AccessWatchpointEventImpl.EVENT_KIND:
	result = AccessWatchpointEventImpl.read(target, requestID,
	dataInStream);
	break;
	case BreakpointEventImpl.EVENT_KIND:
	result = BreakpointEventImpl.read(target, requestID, dataInStream);
	break;
	case ClassPrepareEventImpl.EVENT_KIND:
	result = ClassPrepareEventImpl
	.read(target, requestID, dataInStream);
	break;
	case ClassUnloadEventImpl.EVENT_KIND:
	result = ClassUnloadEventImpl.read(target, requestID, dataInStream);
	break;
	case ExceptionEventImpl.EVENT_KIND:
	result = ExceptionEventImpl.read(target, requestID, dataInStream);
	break;
	case MethodEntryEventImpl.EVENT_KIND:
	result = MethodEntryEventImpl.read(target, requestID, dataInStream);
	break;
	case MethodExitEventImpl.EVENT_KIND:
	result = MethodExitEventImpl.read(target, requestID, dataInStream);
	break;
	case EVENT_METHOD_EXIT_WITH_RETURN_VALUE:
	result = MethodExitEventImpl.readWithReturnValue(target, requestID,
	dataInStream);
	break;
	case MonitorContendedEnteredEventImpl.EVENT_KIND:
	result = MonitorContendedEnteredEventImpl.read(target, requestID,
	dataInStream);
	break;
	case MonitorContendedEnterEventImpl.EVENT_KIND:
	result = MonitorContendedEnterEventImpl.read(target, requestID,
	dataInStream);
	break;
	case MonitorWaitedEventImpl.EVENT_KIND:
	result = MonitorWaitedEventImpl.read(target, requestID,
	dataInStream);
	break;
	case MonitorWaitEventImpl.EVENT_KIND:
	result = MonitorWaitEventImpl.read(target, requestID, dataInStream);
	break;
	case ModificationWatchpointEventImpl.EVENT_KIND:
	result = ModificationWatchpointEventImpl.read(target, requestID,
	dataInStream);
	break;
	case StepEventImpl.EVENT_KIND:
	result = StepEventImpl.read(target, requestID, dataInStream);
	break;
	case ThreadDeathEventImpl.EVENT_KIND:
	result = ThreadDeathEventImpl.read(target, requestID, dataInStream);
	break;
	case ThreadStartEventImpl.EVENT_KIND:
	result = ThreadStartEventImpl.read(target, requestID, dataInStream);
	break;
	case VMDeathEventImpl.EVENT_KIND:
	result = VMDeathEventImpl.read(target, requestID, dataInStream);
	break;
	case VMDisconnectEventImpl.EVENT_KIND:
	result = VMDisconnectEventImpl
	.read(target, requestID, dataInStream);
	break;
	case VMStartEventImpl.EVENT_KIND:
	result = VMStartEventImpl.read(target, requestID, dataInStream);
	break;
	default:
	throw new IOException(
	EventMessages.EventImpl_Read_invalid_EventKind___1
	+ eventKind);
	}

	// Find and store original request.
	if (!requestID.isNull())
	result.fRequest = target.virtualMachineImpl().eventRequestManagerImpl().findRequest(result);

	return result;
	}

	/**
	* @return Returns EventRequest that caused this event to be generated by
	* the Virtual Machine.
	*/
	@Override
	public EventRequest request() {
	return fRequest;
	}

	/**
	* Retrieves constant mappings.
	*/
	public static void getConstantMaps() {
	if (fEventKindMap != null)
	return;

	java.lang.reflect.Field[] fields = EventImpl.class.getDeclaredFields();
	fEventKindMap = new HashMap<>();
	for (Field field : fields) {
	if ((field.getModifiers() & java.lang.reflect.Modifier.PUBLIC) == 0
	\|\| (field.getModifiers() & java.lang.reflect.Modifier.STATIC) == 0
	\|\| (field.getModifiers() & java.lang.reflect.Modifier.FINAL) == 0)
	continue;

	try {
	String name = field.getName();
	Integer intValue = Integer.valueOf(field.getInt(null));

	if (name.startsWith("EVENT_")) { //$NON-NLS-1$
	name = name.substring(6);
	fEventKindMap.put(intValue, name);
	}
	} 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 tags.
	*/
	public static Map<Integer, String> eventKindMap() {
	getConstantMaps();
	return fEventKindMap;
	}
	}