Re: [Pydev-code] Autocompletion in PyDev. A first working version

[Dana M. <dan...@ya...>]

--- Aleks Totic <a...@to...> wrote:
> Hi,
> 
> I think Fabio's problem is that his python code requires Python 
> version > 2.3. When Jython is used by pydev to parse this file, 
> it fails, and autocompletion does not work.
> 

Aleks, that what I thought might be the problem at first; then I
considered that Jython is merely running a bit of CPython code
(actually developed on 2.3.x) So I then wondered whether his argument
was valid or not. I mean: I understand that the jython interpreter
itself is not 2.3 compliant but why should that matter if the
intrspection code _is_ -- That is is there anything from the jython
runtime system that prevents us from doing as good a job as (say)
PyAlaMode. I noted the one thing which is Fabio's suggested little
kludge to exec "class object:pass", but is there anything else???
That's why I am asking Fabio to try out his part python/part C++ code
in somethign like PyAlaMode or PyAlaCarte and let us know.

> Conversely, if his code required Jython to run, autocompletion 
> based upon CPython interpreter would fail to work. So no one 
> solution would please both Jython & CPython developers.
> 
> What's the right solution?
> 
> If scripts can run in both Python & Jython environment, then the 
> user could have an option to pick one they are using. This route 
> involves additional work: You'd have to communicate with Python 
> interpreter through stdio or sockets. Debugger does this, and 
> almost works with Jython. Not quite, since its threading model is 
> different.
> 
> Or different features can use different interpreters, and they 
> just won't work for the other guy. This might sort itself out as 
> Jython catches up with CPython. If this is what we do, make sure 
> that you are clearly communicating to users what is happening. So 
> far:
> 
> - debugger will work with CPython
> - auto-completion will work with Jython
> 
> the users might get confused.
> 
> This is where doing an IDE in a foreign language (Java) gets to 
> be tricky.
> 
> Good luck,
> 
> Aleks
> 
> > Is Jython's failure to be fully version compliant a problem? If
> we're
> > just running a module to introspect code (which was actually a
> direct
> > port from CPython) then does Jython's version skew actually present
> a
> > problem? If it does, then perhaps one that can be worked
> separately;
> > perhaps Kevin Altis might have a comment or two on this topic.
> > 
> > 
> >>So, basically, what I want to say is that it is good the way it is
> > 
> > for Jython development, but when it comes to develop in python, I
> think
> > that jython just hasn't arrived there yet... (still version 2.1)
> and
> > for  some things like dependency on c++ modules, it probably never
> will
> > (and this has never been its purpose).
> > 
> > Correct statements, both.  Is there are better way to invoke Python
> > introspection directly from Eclipse? I suppose we might spawn a
> > separate command line thread "python introspector.py"  and pipe the
> > result to standard out  or a temp file and then read that stream?
> 
> > 
> > 
> >>Of course, we could let the user choose what to use, if we want to
> > 
> > extend the plug-in to develop in jython, but I think that it must
> > support python without dependency on jython.
> > 
> > What's everyone else think? I suppose we could spawn Python as I
> have
> > suggested; we can certainly assume that the use _will_ have Python
> on
> > their system. therefore it's not entirely lame-brain to think about
> > spawning Python to do this job, but I would rather fix the defects
> in
> > the current implementation rather than experiment with a new
> solution,
> > especially if PyAlaMode and other similar completion capabilities
> yield
> > no different result.
> > 
> 
> 
> 
> 
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_/        Dana Moore                   _/
_/  BBN Technologies LLC          _/
_/      M: 240.350.4196             _/
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