I'm still searching for some answers to my original question regarding calling
across from objective-C to MacRuby, and vice-versa. I've done some
experimenting, and had some success with a private framework, but still haven't
figured out some of the bridging stuff...
I created an objective-C framework, and I can instantiate an object of a class
(Foo) defined in the framework (linked into the EmbeddedMacRuby project), and
am able to call a method on that class from a MacRuby script...
f = Foo.new()
x = f.doLoopTest1(10)
However, I'm unable to call a method on my objective-C UI controller class.
I'm working off the EmbeddedMacRuby project, and have added a method to
MyController (which is the objective-C class controller for the UI).
The method is defined as:
- (int) testCall1:(int) loopCount
I've tried various methods of calling it..
m = MyController
x = m.testCall1.testCall1(10)
However, I'm getting the following error message (indicating that it doesn't
know about the method)...
NoMethodError: undefined method `testCall1' for MyController:Class
(NoMethodError)
(null)
How do I expose methods of an objective-C class (not in a framework, but in the
main application) to MacRuby code so that I can call into it from MacRuby?
I've tried gen_bridge_metadata (see original message) with no success. I'm not
sure if gen_bride_metadata is required to expose the objective-c controller
object to the MacRuby code, or if I'm just not setting something else up
properly.
I'm also still curious about how to call from objective-C code in my
application (from MyController, for instance) to a MacRuby function, and then
grab the return value in objective-C when the MacRuby function returns. Can
anyone point me to some sample code?
I've updated to the latest version of MacRuby.
Thanks.
-Larry
On Oct 14, 2010, at 6:58 PM, Larry Wilson wrote:
>
> I've been playing around with the EmbeddedMacRuby project.
>
> I'd like to be able to:
>
> a) Run user scripts (written in Ruby) from within a cocoa application (so
> far, so good)
> b) Call ruby functions from objective-c
> c) Call my private objective-c API's from Ruby functions and scripts
>
> I'm having problems with b & c.
>
> I'm assuming that the mechanism for b & c is different than that used to
> execute a Ruby script. It looks like gen_bridge_metadata script should be
> used to make my objective-c class and methods visible to Ruby.
>
> However, when I try to run gen_bridge_metadata on a simple header file that
> declares an objective-c class and a couple of test methods,
> gen_bridge_metadata doesn't produce anything in the output file other than
> the 3 lines of header information...
>
> 1 <?xml version='1.0'?>
> 2 <!DOCTYPE signatures SYSTEM
> "file://localhost/System/Library/DTDs/BridgeSupport.dtd">
> 3 <signatures version='0.9'/>
>
> I'm running the tool as follows (I've also tried a number of other
> variations):
>
> gen_bridge_metadata -c '-I.' MyController.h -o
> MyController.bridgesupport
>
> I'm running 10.6.4, ruby 1.8.7 , with macRuby 0.7 installed.
>
> I also have ruby1.9 installed.
>
> Questions...
>
> 1) Shouldn't this produce at least simple output with information regarding
> the class and method calls?
>
> 2) Is there some documentation (or examples) somewhere that shows how to set
> things up properly to enable items b & c? I haven't been able to find
> anything in the documentation, or on the web that actually demonstrates how
> to do this, and gen_bridge_metadata doesn't seem to be cooperating.
>
> Any pointers or suggestions welcome.
>
>
> Thanks.
>
> -Larry
>
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> MacRuby-devel@lists.macosforge.org
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