Patches for GDL2

[Stéphane Corthésy]

Hi,

here are some other patches for GDL2 (I still have lots in stock!).
In MacOS X 10.2, there are some classes (public or private) which 
deserve to be used IMHO: NSClassDescription, NSFault (private, 
undocumented) and NSFaultHandler (private, undocumented). Seems these 
are (quite) straight ports from EOF, down to Foundation.
Until we have tests, I can't assure you that they all work fine, but 
till now, in my examples, they seem to work reliably well. Moreover, I 
can't make GDL2's EOFault work on OSX, because I miss the 
implementation of -[NSInvocation returnFrame:] and -[NSInvocation 
initWithArgframe:selector:] for faults.

I've modified EOClassDescription, EOFault and EOFaultHandler classes to 
subclass these classes, and to implement only missing methods, or 
methods that need to be overloaded. I've used HAVE_NSCLASSDESCRIPTION, 
HAVE_NSFAULT and HAVE_NSFAULTHANDLER macros. Code is a bit messy, due 
to all these #ifdef, but it works. Note that in case HAVE_NSFAULT is 
#defined, the config.h file needs to also #define EOFault	NSFault

I guess you could also use base's NSClassDescription implementation as 
superclass of EOClassDescription, if it works fine; this would avoid 
duplicating code and functionalities.

Stéphane


Changelog
EOControl/EOClassDescription.h: use GDL2CONTROL_EXPORT instead of 
extern; added use of HAVE_NSCLASSDESCRIPTION all around to reuse 
NSClassDescription
EOControl/EOClassDescription.m: added use of HAVE_NSCLASSDESCRIPTION 
all around to reuse NSClassDescription; make use of global vars instead 
of their values; added some casts
EOControl/EOFault.h: added use of HAVE_NSFAULT to reuse implementation 
of NSFault
EOControl/EOFault.m: added use of HAVE_NSFAULT to reuse implementation 
of NSFault and NSFaultHandler
EOControl/EOFaultHandler.m: added use of HAVE_NSFAULT to reuse 
implementation of NSFaultHandler

EOControl-patch.txt.gz
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