Objective-C support

[yairchu]

What would it take to support Objective-C too?

[bitonic]

I don't know -- I've never used Objective-C.

If its tooling is close to C/C++'s it would probably be pretty easy.

[yairchu]

If its tooling is close to C/C++'s it would probably be pretty easy.

Yeah the tooling is close afaik. As a clang user I just compile a .m file instead of a .c.

Trying to look on inline-c's side but I'm having trouble following it. I see that inlineCode creates a new ffiImportName to use, and I understand that emitVerbatim above it somehow emits the C code for it but I'm not really following how it works.

[yairchu]

Ok I still don't know exactly how the internals work but I got it working!

Just changing TH.LangC to TH.LangObjc in initialiseModuleState makes Objective-C work.

Then I can do

cglCtx <- [C.block| void* {
    NSOpenGLContext* object = (NSOpenGLContext*) $(void* nsglCtx);
    return [object CGLContextObj];
}|]

Instead of

cglCtx <- [C.block| void* {
    id object = (id) $(void* nsglCtx);
    SEL selector = sel_registerName("CGLContextObj");
    Method method = class_getInstanceMethod(object_getClass(object), selector);
    IMP imp = method_getImplementation(method);
    return ((CGLContextObj (*)(id, SEL))imp)(object, selector);
}|]

How would we like it do work? In a separate module/package like C++? If you have a general design for how this should work then I can make a PR for it.

[bitonic]

The right way to do this is in a separate package following the pattern of inline-c-cpp.

On Wed, 10 May 2023 at 15:24, Yair Chuchem @.***> wrote:

Ok I still don't know exactly how the internals work but I got it working!

Just changing TH.LangC to TH.LangObjc in initialiseModuleState makes Objective-C work.

Then I can do

cglCtx <- [C.block| void { NSOpenGLContext object = (NSOpenGLContext) $(void nsglCtx); return [object CGLContextObj]; }|]

Instead of

cglCtx <- [C.block| void { id object = (id) $(void nsglCtx); SEL selector = sel_registerName("CGLContextObj"); Method method = class_getInstanceMethod(object_getClass(object), selector); IMP imp = method_getImplementation(method); return ((CGLContextObj (*)(id, SEL))imp)(object, selector); }|]

How would we like it do work? In a separate module/package like C++? If you have a general design for how this should work then I can make a PR for it.

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[bitonic]

Fixed by #143 .