jess.server
Class DebugListener

java.lang.Object
  java.util.Observable
      jess.server.DebugListener

All Implemented Interfaces:

java.util.EventListener, JessListener

public class DebugListener

extends java.util.Observable

implements JessListener

This class is part of the implementation of the JessDE debugger. It's responsible for handling breakpoints and other debugger commands.

(C) 2005 Sandia National Laboratories

Field Summary

static java.lang.String	ERROR
static java.lang.String	FACT
static java.lang.String	OK
static java.lang.String	PRINT
static java.lang.String	QUIT
static java.lang.String	RESUME
static java.lang.String	RESUME_STEP
static java.lang.String	STACK
static java.lang.String	STARTED
static java.lang.String	STOPPED
static java.lang.String	SUSPEND
static java.lang.String	SUSPEND_STEP
static java.lang.String	SUSPENDED_BREAK

Constructor Summary

DebugListener()

DebugListener(java.io.Reader input, java.io.Writer output, java.io.Writer events)

Method Summary

boolean	commandReady()
void	eventHappened(JessEvent je) Called by a JessEvent source when something interesting happens.
void	handlePrintCommand(JessEvent je, java.lang.String command)
java.lang.String	readCommand()
void	removeBreakpoint(java.lang.String filename, int lineNumber)
void	reportError(java.lang.Throwable e)
void	sendEvent(java.lang.String event)
void	sendResponse(java.lang.String response)
boolean	shouldBreakAt(java.lang.String filename, int lineNumber)
boolean	waitForConnections(int debugPort, int eventPort)

Methods inherited from class java.util.Observable

addObserver, clearChanged, countObservers, deleteObserver, deleteObservers, hasChanged, notifyObservers, notifyObservers, setChanged

Methods inherited from class java.lang.Object

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

Field Detail

STARTED

public static final java.lang.String STARTED

See Also:

Constant Field Values

STOPPED

public static final java.lang.String STOPPED

See Also:

Constant Field Values

QUIT

public static final java.lang.String QUIT

See Also:

Constant Field Values

SUSPEND

public static final java.lang.String SUSPEND

See Also:

Constant Field Values

RESUME

public static final java.lang.String RESUME

See Also:

Constant Field Values

RESUME_STEP

public static final java.lang.String RESUME_STEP

See Also:

Constant Field Values

SUSPEND_STEP

public static final java.lang.String SUSPEND_STEP

See Also:

Constant Field Values

SUSPENDED_BREAK

public static final java.lang.String SUSPENDED_BREAK

See Also:

Constant Field Values

STACK

public static final java.lang.String STACK

See Also:

Constant Field Values

ERROR

public static final java.lang.String ERROR

See Also:

Constant Field Values

OK

public static final java.lang.String OK

See Also:

Constant Field Values

PRINT

public static final java.lang.String PRINT

See Also:

Constant Field Values

FACT

public static final java.lang.String FACT

See Also:

Constant Field Values

Constructor Detail

DebugListener

public DebugListener(java.io.Reader input,
                     java.io.Writer output,
                     java.io.Writer events)

DebugListener

public DebugListener()

Method Detail

eventHappened

public void eventHappened(JessEvent je)
                   throws JessException

Description copied from interface: JessListener

Called by a JessEvent source when something interesting happens. The typical implementation of eventHappened will switch on the return value of je.getType().

Specified by:

eventHappened in interface JessListener

Parameters:

je - an event object describing the event.

Throws:

JessException - if any problem occurs during event handling.

handlePrintCommand

public void handlePrintCommand(JessEvent je,
                               java.lang.String command)
                        throws JessException

Throws:

JessException

reportError

public void reportError(java.lang.Throwable e)

sendEvent

public void sendEvent(java.lang.String event)

sendResponse

public void sendResponse(java.lang.String response)

commandReady

public boolean commandReady()
                     throws java.io.IOException

Throws:

java.io.IOException

readCommand

public java.lang.String readCommand()
                             throws java.io.IOException

Throws:

java.io.IOException

waitForConnections

public boolean waitForConnections(int debugPort,
                                  int eventPort)

removeBreakpoint

public void removeBreakpoint(java.lang.String filename,
                             int lineNumber)

shouldBreakAt

public boolean shouldBreakAt(java.lang.String filename,
                             int lineNumber)