[antlr-interest] Debugging problem
ruth.karl at gmx.de
Sun May 27 08:26:28 PDT 2007
Gavin Lambert schrieb:
> At 21:44 27/05/2007, Ruth Karl wrote:
> >I like ANTLWorks a lot, but I cannot figure out how to tell it how
> >to debug.
> >Whenever I try to, it obviously tries to connect (to port 49157
> >which seems to be the default setting in preferences - but who
> >... is listening there???) and then (not very surprinsingly)
> >gets a time-out. I do not see, how I could configure the debugger
> >or how debugging is supposed to work. My target language is C#...
> >but I can't get it to work with Java either.
> There's two separate debugging modes. The first ("Debug"), only works
> with Java AFAIK but automatically compiles and runs the parser. The
> second ("Debug Remote"), I think will work with any language since
> it's connecting to an external server. To use the second option you
> have to build a debug parser (extra compiler option to ANTLR) and
> start it up, and only *then* start debugging in ANTLRworks.
> Also note that ANTLRworks only seems to be able to debug parsers -- it
> won't help with debugging the lexer (except indirectly).
Thanks a lot for your reply: but sorry, what is 'AFAIK'?
For the first ("Debug") option with Java as default target language, the
error(10): internal error:
java.net.BindException: Address already in use: JVM_Bind
Exception in thread "main" java.lang.NullPointerException
which refers to line 82 in testParser:
in the finally-block of its document()-method.
What could be the reason? How can I avoid it and use the debugger?
For the second ("Debug remote") option: As far as I can see, I have to
modify the parser then, give it a new constructor, so I can invoke it
without a reference to an inputStream. The same for the lexer. And how
do I connect it to (which?) DebugEventListener???
Sorry for asking so many probably dumb questions, but I am really
confused, especially because the description insinuates that "Debug"
'automatically compiles and runs the parser'...
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