[Pyobjc-dev] Interesting hack, with dead end

[Ronald O. <ron...@ma...>]

Hi,

The following blogpost hints on how IB communicates with Xcode to  
automaticly read IBAction and IBOutlet definitions from your source  
code:  http://cocoawithlove.com/2009/02/interprocess-communication-snooping.html

With some hacking on pyobjc-core I have a script that seems to  
implement the right interface, but sadly enough this doesn't actually  
work: IB says it has problems communicating with the script:

2009-03-29 08:45:17.238 Interface Builder[32180:10b] ERROR:  
PBXProjectWatcherServer: DO error while unregistering target watcher.
2009-03-29 08:45:17.239 Interface Builder[32180:10b] ERROR:  
PBXProjectWatcherServer: DO error while unregistering file watcher.
2009-03-29 08:45:17.240 Interface Builder[32180:10b] ERROR:  
PBXProjectWatcherServer: DO error while unregistering project file  
watcher.
2009-03-29 08:45:17.242 Interface Builder[32180:10b] ERROR:  
PBXProjectWatcherServer: DO error while unregistering target file  
watcher.
2009-03-29 08:45:17.243 Interface Builder[32180:10b] ERROR:  
PBXProjectWatcherServer: DO error while requesting project info.
2009-03-29 08:45:17.413 Interface Builder[32180:10b] ERROR:  
PBXProjectWatcherServer: DO error while requesting project info.
2009-03-29 08:45:17.914 Interface Builder[32180:10b] ERROR:  
PBXProjectWatcherServer: DO error while requesting project info.


Attached are two files: ib_interface.py tries to implement the DO  
interface that Xcode implements for the communication with IB, read.py  
uses the same interface to communicate with Xcode. The read.py script  
works fine, both with Xcode and my script, but IB doesn't like my  
script (as noted above).

This is just a quick hack between sessions at PyCon, but I'd love to  
have a working version of the script to be able to hack on simple  
Cocoa scripts without having to start Xcode (because I do most of code  
writing in vim and Xcode is basically just unwanted overhead for most  
of my code).

Does anyone have tips on how to debug the problems I'm running into?

Ronald

P.S. This is obviously a very crude hack, using undocumented  
interfaces that could chance without notice.