Re: [Jython-users] Variable 'jpy$packages' ?!?

[Peter B. <bri...@ma...>]

Finn:
I've managed to reproduce the jpy$packages problem with a small example.
We need the following two files, foo.py and bug.py.

-------------------------- foo.py -----------------------------

import java

class foo(java.lang.Object):
	pass

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

-------------------------- bug.py -----------------------------

from foo import foo

class bar(foo):
	pass

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




When compiling this with
	jythonc --deep bug.py
I get the following messages:


---------------------------------------------------------------
	processing bug
	processing foo

	Required packages:
	  java.lang

	Creating adapters:

	Creating .java files:
	  foo module
	    foo extends java.lang.Object
	  bug module
	    bar extends foo

	Compiling .java to .class...
	Compiling with args: ['/usr/local/j2sdk1.3.1/bin/javac', '-classpath', '/usr/local/jython-2.0/jython.jar::./jpywork::/usr/local/jython-2.0/Tools/jythonc:/home/brinkman/prog/java/gumbie/work/.:/usr/local/jython-2.0/Lib:/home/brinkman/prog/java/gumbie:/home/brinkman/prog/java', './jpywork/foo.java', './jpywork/bug.java']1  ./jpywork/bug.java:60: jpy$packages is inherited from foo and hides variable in outer class bug.  An explicit 'this' qualifier must be used to select the desired instance.
		    Py.initProxy(this, "bug", "bar", new Object[] {}, jpy$packages, jpy$properties, "", new String[] {"bug", "foo"});
								      ^
	./jpywork/bug.java:60: jpy$properties is inherited from foo and hides variable in outer class bug.  An explicit 'this' qualifier must be used to select the desired instance.
		    Py.initProxy(this, "bug", "bar", new Object[] {}, jpy$packages, jpy$properties, "", new String[] {"bug", "foo"});
										    ^
	2 errors

	ERROR DURING JAVA COMPILATION... EXITING
---------------------------------------------------------------

Experiments suggest that the following circumstances are necessary to
trigger the bug.
	1. The class foo is derived from a java class.
	2. The name of the module (foo) is the same as the name of the
	class.
	3. The whole thing gets compiled with the --deep option.

Note that these three conditions are not sufficient to trigger the bug;
I've got examples satisfying both 1. and 2. that compile just fine.
Best,
	Peter



On Thu, Aug 16, 2001 at 07:46:07PM +0000, Finn Bock wrote:
> [Peter Brinkmann]
> 
> >Hi!
> >I'm afraid I've run into another problem related to jythonc. When compiling
> >a rather large project, jythonc quit after javac reported the following
> >error:
> >
> >1  ./jpywork/small.java:183: Variable 'jpy$packages' is inherited in nested class small. newgui, 
> > and hides a variable of the same name in class small. An explicit 'this' qualifier must ...
> >
> >Has anyone noticed this kind of problem before? 
> 
> It is new to me.
> 
> >I can try to reproduce the
> >problem with a small amount of code, but before I do that, I'd like to make
> >sure that this one is new.
> 
> An example would make it a lot easier for us. You already know where to
> post it:
> 
>   http://sourceforge.net/tracker/?group_id=12867&atid=112867 
> 
> regards,
> finn
> 
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