[Pyobjc-dev] NGPython

[Helge H. <hel...@op...>]

Hi,

just tried out the 1.1b1 release, very nice :-)

Actually I have written an Objective-C bridge for Python on 
GNUstep/libFoundation some five years ago, this was called NGPython. 
While it doesn't seem to compile anymore out of the box even on 
GNUstep, I thought someone might be interested in ripping of some code 
nevertheless.

The most interesting part is probably the "pybridget2.py" tool 
contained in NGPython. This is actually a parser for headers and "jobs" 
files - similiar to those used for the NeXT Java bridge, and for 
generating class wrapping information.
It was pretty flexible on mapping Python function names to selectors:
---snip---
class NSSet = FoundationCollections.NSSet
   constructor -initWithArray:
   constructor -initWithSet:
   @{
keyConstructors = { "array":  "initWithArray",
                     "set":    "initWithSet" }
lenConstructors = { 0: "init", 1: "initWithArray" }
   @}
   -allObjects
---snap---
For construction of Python objects you could then use code like this:
---snip---
   set = NSSet(array=myarray)
   set = NSSet(set=otherSet)
---snap---
With the mapping mechanism taking keywords and positional parameters 
into account.
I think that this was much more beautiful than the current automatic 
":" => "_" scheme used in PyObjC ;-)


So, if someone is interested, drop me a line and I send you the code 
;-) Unfortunately I won't find the time to look at adding the mapping 
stuff to PyObjC, but maybe someone else has ...

best regards,
   Helge
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