[DrJava] [ drjava-Bugs-681547 ] Interactions and Comments

[SourceForge.net <no...@so...>]

Bugs item #681547, was opened at 2003-02-06 03:19
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=438935&aid=681547&group_id=44253

Category: Interactions
Group: Makes DrJ unstable
Status: Open
Resolution: None
Priority: 8
Submitted By: Peter Centgraf (centgraf)
Assigned to: Nobody/Anonymous (nobody)
Summary: Interactions and Comments

Initial Comment:
Type a comment into the interactions pane, like so:

/* stuff and junk */

Hit enter.  Nothing appears to happen, except that the cursor is now at position 4.  Hit enter again -> position 6.  Keep hitting enter until it tries to go to position > amount of text in the current interaction.  Look in the Console tab for this message:

ava.lang.IllegalArgumentException: bad position: 25
	at javax.swing.text.JTextComponent.setCaretPosition(JTextComponent.java:1120)
	at edu.rice.cs.drjava.ui.InteractionsPane$CaretUpdateListener.insertUpdate(InteractionsPane.java:74)
	at javax.swing.text.AbstractDocument.fireInsertUpdate(AbstractDocument.java:175)
	at javax.swing.text.AbstractDocument.insertString(AbstractDocument.java:537)
	at edu.rice.cs.drjava.model.repl.AbstractInteractionsDocument.insertString(AbstractInteractionsDocument.java:176)
	at edu.rice.cs.drjava.model.DefaultGlobalModel._docAppend(DefaultGlobalModel.java:916)
	at edu.rice.cs.drjava.model.DefaultGlobalModel.interpretCurrentInteraction(DefaultGlobalModel.java:783)
	at edu.rice.cs.drjava.model.repl.DefaultInteractionsDocument.interpretCurrentInteraction(DefaultInteractionsDocument.java:68)
	at edu.rice.cs.drjava.ui.InteractionsPane$2.construct(InteractionsPane.java:95)
	at edu.rice.cs.util.swing.SwingWorker$2.run(SwingWorker.java:150)
	at java.lang.Thread.run(Thread.java:491)

  Reset the interactions pane.  Try to quit DrJava.  Get this message:

java.lang.IllegalStateException: tried to quit when no slave running and startup not in progress
	at edu.rice.cs.util.newjvm.AbstractMasterJVM.quitSlave(AbstractMasterJVM.java:254)
	at edu.rice.cs.drjava.model.repl.newjvm.MainJVM.killInterpreter(MainJVM.java:291)
	at edu.rice.cs.drjava.model.DefaultGlobalModel.resetInteractions(DefaultGlobalModel.java:731)
	at edu.rice.cs.drjava.ui.MainFrame$29.construct(MainFrame.java:528)
	at edu.rice.cs.util.swing.SwingWorker$2.run(SwingWorker.java:150)
	at java.lang.Thread.run(Thread.java:491)

Weep.

It also occurs with "//" comments.  I can reproduce the problem very quickly with just "//" + Enter + Enter.  Maybe it happens with anything that DynamicJava thinks is an empty statement.  The error on quit is probably a side effect of the JVM throwing an exception and the Interactions pane dying ungracefully.

In case you didn't notice, THIS IS REALLY BAD!

----------------------------------------------------------------------

You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=438935&aid=681547&group_id=44253