I meant to say while I can call a function like objc_getClass("NSWindow") or
sel_getUid(""), I cannot call objc_msgSend(id, SEL, …) because Swift cannot
import variadic C functions.
> On Jul 31, 2023, at 12:32 AM, [email protected] wrote:
>
> I built a Swift module that imports libobjc2's headers and links against the
> library. So far, I got it to link against AppKit as well. The first problem
> that I ran into, for which I am currently unaware of a solution, is that
> almost all the objc functions use variadic arguments which do not import into
> Swift.
>
> While I can call a function like objc_msgSend(id, SEL, …), I'm unable to
> because it's not supported in swift. Are there any solutions using only C
> imported into Swift that would allow me to call these method?
>
> The suggestion is to use version of the functions that use va_lists instead,
> but obviously those versions are not present in the library.
>
> - Austin
>
>> On Jul 29, 2023, at 4:28 PM, Stefan Bidigaray <[email protected]> wrote:
>>
>> You can have a look at the code in libs-corebase for an example on how to
>> call method from C code. All the bridge code is in Source/GSObjCRuntime.h.
>>
>> On Sat, Jul 29, 2023, 16:05 <[email protected] <mailto:[email protected]>> wrote:
>>> I am very interested in building a bridge between Swift and GNUStep's
>>> Objective-C Runtime.
>>>
>>> Given that the Objective-C implementation provided by GNUStep doesn't
>>> interact directly with Swift as Swift can with Apple's Objective-C runtime,
>>> I was wondering if there was a way to call into GNUStep from C. If someone
>>> could show me an example of a way to call into GNUStep using either C as a
>>> bride though a Swift project or directly from Swift, I would be more than
>>> willing to start building a bridge. I just don't currently understand how
>>> to do it.
>>>
>>> I malignly want to do this so I could more rapidly build software for
>>> OnFlapp's GNUStep Desktop, but I think this would ultimately benefit
>>> everyone.
>
