[Rubycocoa-talk] weird Boolean behaviour of bridge

[Axel M. R. <rub...@ro...>]

I have a ruby class that returns some boolean value back to an Obj-C 
class. However, the values in the obj-C class are all wrong!

I have two methods in ruby:
   def ret_true
     true
   end

   def ret_false
     false
   end

And I've defined a protocol to call back the Ruby methods from Obj-C

   @protocol Profiler
     -(BOOL) ret_true;
     -(BOOL) ret_false;
   @end

Then, when I call the ruby methods, like this:
- (void) testBoolean:(id)testrb
{
	BOOL tst = [testrb ret_true];
	NSLog (@"true: %d",tst);
	tst = [testrb ret_false];
	NSLog (@"false: %d",tst);
}

I get the following output (!)
"we're giving a bool to Obj-C"
2008-07-21 23:06:13.763 StringData[19788:10b] true: 0
2008-07-21 23:06:13.767 StringData[19788:10b] false: -8

Thus, true is represented as 0, and false as -8, which is exactly the 
wrong way around.

Am I missing something important here?

I've put a Xcode sample package on http://axel.nu/Boolean.zip

Hopefully someone can shed some light on the correct bridge 
behaviour, so I can remove my patch code.


Axel
-- 
_________________________
Axel Roest
axelloroestello@{AIM/MSN} - Skype:axellofono - XOIP: 084-8749988