[MacRuby-devel] Accessing Obj-C InstVars from Ruby
lsansonetti at apple.com
Sat Apr 4 20:01:57 PDT 2009
On Apr 4, 2009, at 7:49 PM, Mathias Sulser wrote:
> I started working on this. I have a failing test case and figured a
> way to hook in the objc lookup inside the ivar_get function.
> However, I haven't figured out how I can call
> object_getInstanceVariable with an ROBJECT.. any hints appreciated.
You can simply cast the object as an `id'. In MacRuby, all objects
except immediates  are Objective-C objects and can be casted as `id'.
: fixnums, true, false, nil, Qundef (not exported) - in your case
these should already be caught earlier in ivar_get/set.
> Regards, Mathias
> On 3 Apr 2009, at 19:29, Laurent Sansonetti wrote:
>> On Apr 1, 2009, at 8:07 AM, Benjamin Stiglitz wrote:
>>>>>> Is there a way to access instance variables defined in an
>>>>>> class from a Ruby extension?
>>>> It is currently not implemented, but it's technically possible. A
>>>> good work-around is to define accessors (properties) as John
>>> Maybe we need MacRuby::Runtime to bubble up the Obj-C runtime. Or
>> Might be a nice feature, but in this case I think we should simply
>> expose the existing Objective-C ivars in variable.c, by adding
>> another lookup path. If someone is willing to investigate that let
>> me know. Should not be that hard.
>> MacRuby-devel mailing list
>> MacRuby-devel at lists.macosforge.org
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