Re: [Rubycocoa-talk] Calling Ruby from Objective-C

[Satoshi N. <sna...@in...>]

Hi,

Actually, it is the right way now.

> 	The only difference is, that you convert the NSCFString to String.
> 	Is this step very important? If the NSString has been autoreleased,
> 	will Ruby retain it to keep the AutoreleasePool from dealloc-ing?	

No. The step is unnecessary in this case.
Because to_s will be called for all parameters in instance_eval.

For the latter question, yes.
Ruby will keep the NSString after the autorelease.
You can make a test by yourself like:

   class AppController < OSX::NSObject
     def awakeFromNib
       OSX::TestObject.callback(self)
       p @s
     end

     def keep(s)
       @s = s
     end
   end

   @implementation TestObject
   + (void)callback:(id)sender
   {
     NSString* s = [[NSString alloc] initWithString:@"foobar"];
     [sender keep:s];
     [s release];
   }
   @end

--
Satoshi Nakagawa

On 2007/12/05, at 10:19, Stefan Mueller wrote:

> Hello
>
> 	Thanks for the quick answer. It looks like the workaround,
> 	that I mentioned at the end of my message was actually the
> 	right way to do it.
>
> 	The only difference is, that you convert the NSCFString to String.
> 	Is this step very important? If the NSString has been autoreleased,
> 	will Ruby retain it to keep the AutoreleasePool from dealloc-ing?	
>
>
> 	Knowing about objc_method will also be useful.
>
>
> stefan mueller
>
>
> On Dec 5, 2007, at 01:32 , Satoshi Nakagawa wrote:
>
>> Hi,
>>
>> For example, you need to make a callable method from ObjC in a ruby
>> class:
>>
>>  def evalScript_source(script, source)
>>    instance_eval(script.to_s, source.to_s)
>>  end
>>
>> --
>> Satoshi Nakagawa
>>
>> On 2007/12/05, at 6:50, Stefan Mueller wrote:
>>
>>> Hello
>>>
>>> 	
>>> 	I've made a proxy method that's a better fit for bridge and then
>>> calls the Ruby method,
>>> 	but I don't think it's ideal.
>>>
>>> 	def evaluate_source(script, source)
>>> 		self.instance_eval(script, source)	
>>> 	end
>>>
>>> regards,
>>> Stefan Mueller
>>
>
>
> -------------------------------------------------------------------------
> SF.Net email is sponsored by: The Future of Linux Business White Paper
> from Novell.  From the desktop to the data center, Linux is going
> mainstream.  Let it simplify your IT future.
> http://altfarm.mediaplex.com/ad/ck/8857-50307-18918-4
> _______________________________________________
> Rubycocoa-talk mailing list
> Rub...@li...
> https://lists.sourceforge.net/lists/listinfo/rubycocoa-talk