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madsmtmmadsmtm
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Refactor extern "C" fn type creation
1 parent db8a236 commit 9ae9818

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2 files changed

+141
-180
lines changed

2 files changed

+141
-180
lines changed

‎objc2-foundation/src/declare_macro.rs

Lines changed: 2 additions & 180 deletions
Original file line numberDiff line numberDiff line change
@@ -209,9 +209,7 @@ macro_rules! __inner_declare_class {
209209
@extract_sel
210210
$(#[$($m)*])*
211211
},
212-
$crate::__inner_declare_class! {
213-
@cast_extern_fn
214-
@$name
212+
Self::$name as $crate::__extern_fn_ptr! {
215213
$($builder_args)*
216214
},
217215
);
@@ -231,187 +229,11 @@ macro_rules! __inner_declare_class {
231229
@extract_sel
232230
$(#[$($m)*])*
233231
},
234-
$crate::__inner_declare_class! {
235-
@cast_extern_fn
236-
@$name
232+
Self::$name as $crate::__extern_fn_ptr! {
237233
$($builder_args)*
238234
},
239235
);
240236
};
241-
242-
// Create the `as extern "C" fn(...) -> _` cast
243-
//
244-
// TODO: Investigate if there's a better way of doing this
245-
{
246-
@cast_extern_fn
247-
@$name:ident
248-
249-
$(,)?
250-
} => {
251-
Self::$name as extern "C" fn(_, _) -> _
252-
};
253-
{
254-
@cast_extern_fn
255-
@$name:ident
256-
257-
$($param1:ident)? $(_)?: $param1_ty:ty $(,)?
258-
} => {
259-
Self::$name as extern "C" fn(_, _, _) -> _
260-
};
261-
{
262-
@cast_extern_fn
263-
@$name:ident
264-
265-
$($param1:ident)? $(_)?: $param1_ty:ty,
266-
$($param2:ident)? $(_)?: $param2_ty:ty $(,)?
267-
} => {
268-
Self::$name as extern "C" fn(_, _, _, _) -> _
269-
};
270-
{
271-
@cast_extern_fn
272-
@$name:ident
273-
274-
$($param1:ident)? $(_)?: $param1_ty:ty,
275-
$($param2:ident)? $(_)?: $param2_ty:ty,
276-
$($param3:ident)? $(_)?: $param3_ty:ty $(,)?
277-
} => {
278-
Self::$name as extern "C" fn(_, _, _, _, _) -> _
279-
};
280-
{
281-
@cast_extern_fn
282-
@$name:ident
283-
284-
$($param1:ident)? $(_)?: $param1_ty:ty,
285-
$($param2:ident)? $(_)?: $param2_ty:ty,
286-
$($param3:ident)? $(_)?: $param3_ty:ty,
287-
$($param4:ident)? $(_)?: $param4_ty:ty $(,)?
288-
} => {
289-
Self::$name as extern "C" fn(_, _, _, _, _, _) -> _
290-
};
291-
{
292-
@cast_extern_fn
293-
@$name:ident
294-
295-
$($param1:ident)? $(_)?: $param1_ty:ty,
296-
$($param2:ident)? $(_)?: $param2_ty:ty,
297-
$($param3:ident)? $(_)?: $param3_ty:ty,
298-
$($param4:ident)? $(_)?: $param4_ty:ty,
299-
$($param5:ident)? $(_)?: $param5_ty:ty $(,)?
300-
} => {
301-
Self::$name as extern "C" fn(_, _, _, _, _, _, _) -> _
302-
};
303-
{
304-
@cast_extern_fn
305-
@$name:ident
306-
307-
$($param1:ident)? $(_)?: $param1_ty:ty,
308-
$($param2:ident)? $(_)?: $param2_ty:ty,
309-
$($param3:ident)? $(_)?: $param3_ty:ty,
310-
$($param4:ident)? $(_)?: $param4_ty:ty,
311-
$($param5:ident)? $(_)?: $param5_ty:ty,
312-
$($param6:ident)? $(_)?: $param6_ty:ty $(,)?
313-
} => {
314-
Self::$name as extern "C" fn(_, _, _, _, _, _, _, _) -> _
315-
};
316-
{
317-
@cast_extern_fn
318-
@$name:ident
319-
320-
$($param1:ident)? $(_)?: $param1_ty:ty,
321-
$($param2:ident)? $(_)?: $param2_ty:ty,
322-
$($param3:ident)? $(_)?: $param3_ty:ty,
323-
$($param4:ident)? $(_)?: $param4_ty:ty,
324-
$($param5:ident)? $(_)?: $param5_ty:ty,
325-
$($param6:ident)? $(_)?: $param6_ty:ty,
326-
$($param7:ident)? $(_)?: $param7_ty:ty $(,)?
327-
} => {
328-
Self::$name as extern "C" fn(_, _, _, _, _, _, _, _, _) -> _
329-
};
330-
{
331-
@cast_extern_fn
332-
@$name:ident
333-
334-
$($param1:ident)? $(_)?: $param1_ty:ty,
335-
$($param2:ident)? $(_)?: $param2_ty:ty,
336-
$($param3:ident)? $(_)?: $param3_ty:ty,
337-
$($param4:ident)? $(_)?: $param4_ty:ty,
338-
$($param5:ident)? $(_)?: $param5_ty:ty,
339-
$($param6:ident)? $(_)?: $param6_ty:ty,
340-
$($param7:ident)? $(_)?: $param7_ty:ty,
341-
$($param8:ident)? $(_)?: $param8_ty:ty $(,)?
342-
} => {
343-
Self::$name as extern "C" fn(_, _, _, _, _, _, _, _, _, _) -> _
344-
};
345-
{
346-
@cast_extern_fn
347-
@$name:ident
348-
349-
$($param1:ident)? $(_)?: $param1_ty:ty,
350-
$($param2:ident)? $(_)?: $param2_ty:ty,
351-
$($param3:ident)? $(_)?: $param3_ty:ty,
352-
$($param4:ident)? $(_)?: $param4_ty:ty,
353-
$($param5:ident)? $(_)?: $param5_ty:ty,
354-
$($param6:ident)? $(_)?: $param6_ty:ty,
355-
$($param7:ident)? $(_)?: $param7_ty:ty,
356-
$($param8:ident)? $(_)?: $param8_ty:ty,
357-
$($param9:ident)? $(_)?: $param9_ty:ty $(,)?
358-
} => {
359-
Self::$name as extern "C" fn(_, _, _, _, _, _, _, _, _, _, _) -> _
360-
};
361-
{
362-
@cast_extern_fn
363-
@$name:ident
364-
365-
$($param1:ident)? $(_)?: $param1_ty:ty,
366-
$($param2:ident)? $(_)?: $param2_ty:ty,
367-
$($param3:ident)? $(_)?: $param3_ty:ty,
368-
$($param4:ident)? $(_)?: $param4_ty:ty,
369-
$($param5:ident)? $(_)?: $param5_ty:ty,
370-
$($param6:ident)? $(_)?: $param6_ty:ty,
371-
$($param7:ident)? $(_)?: $param7_ty:ty,
372-
$($param8:ident)? $(_)?: $param8_ty:ty,
373-
$($param9:ident)? $(_)?: $param9_ty:ty,
374-
$($param10:ident)? $(_)?: $param10_ty:ty $(,)?
375-
} => {
376-
Self::$name as extern "C" fn(_, _, _, _, _, _, _, _, _, _, _, _) -> _
377-
};
378-
{
379-
@cast_extern_fn
380-
@$name:ident
381-
382-
$($param1:ident)? $(_)?: $param1_ty:ty,
383-
$($param2:ident)? $(_)?: $param2_ty:ty,
384-
$($param3:ident)? $(_)?: $param3_ty:ty,
385-
$($param4:ident)? $(_)?: $param4_ty:ty,
386-
$($param5:ident)? $(_)?: $param5_ty:ty,
387-
$($param6:ident)? $(_)?: $param6_ty:ty,
388-
$($param7:ident)? $(_)?: $param7_ty:ty,
389-
$($param8:ident)? $(_)?: $param8_ty:ty,
390-
$($param9:ident)? $(_)?: $param9_ty:ty,
391-
$($param10:ident)? $(_)?: $param10_ty:ty,
392-
$($param11:ident)? $(_)?: $param11_ty:ty $(,)?
393-
} => {
394-
Self::$name as extern "C" fn(_, _, _, _, _, _, _, _, _, _, _, _, _) -> _
395-
};
396-
{
397-
@cast_extern_fn
398-
@$name:ident
399-
400-
$($param1:ident)? $(_)?: $param1_ty:ty,
401-
$($param2:ident)? $(_)?: $param2_ty:ty,
402-
$($param3:ident)? $(_)?: $param3_ty:ty,
403-
$($param4:ident)? $(_)?: $param4_ty:ty,
404-
$($param5:ident)? $(_)?: $param5_ty:ty,
405-
$($param6:ident)? $(_)?: $param6_ty:ty,
406-
$($param7:ident)? $(_)?: $param7_ty:ty,
407-
$($param8:ident)? $(_)?: $param8_ty:ty,
408-
$($param9:ident)? $(_)?: $param9_ty:ty,
409-
$($param10:ident)? $(_)?: $param10_ty:ty,
410-
$($param11:ident)? $(_)?: $param11_ty:ty,
411-
$($param12:ident)? $(_)?: $param12_ty:ty $(,)?
412-
} => {
413-
Self::$name as extern "C" fn(_, _, _, _, _, _, _, _, _, _, _, _, _, _) -> _
414-
};
415237
}
416238

417239
/// Declare a new Objective-C class.

‎objc2-foundation/src/macros.rs

Lines changed: 139 additions & 0 deletions
Original file line numberDiff line numberDiff line change
@@ -391,3 +391,142 @@ macro_rules! __attribute_helper {
391391
{@extract_sel_duplicate} => {};
392392

393393
}
394+
395+
/// Create an `extern "C" fn(_, _, ...) -> _` type.
396+
///
397+
/// TODO: Investigate if there's a better way of doing this.
398+
#[doc(hidden)]
399+
#[macro_export]
400+
macro_rules! __extern_fn_ptr {
401+
{
402+
$(,)?
403+
} => {
404+
extern "C" fn(_, _) -> _
405+
};
406+
{
407+
$($param1:ident)? $(_)?: $param1_ty:ty $(,)?
408+
} => {
409+
extern "C" fn(_, _, _) -> _
410+
};
411+
{
412+
$($param1:ident)? $(_)?: $param1_ty:ty,
413+
$($param2:ident)? $(_)?: $param2_ty:ty $(,)?
414+
} => {
415+
extern "C" fn(_, _, _, _) -> _
416+
};
417+
{
418+
$($param1:ident)? $(_)?: $param1_ty:ty,
419+
$($param2:ident)? $(_)?: $param2_ty:ty,
420+
$($param3:ident)? $(_)?: $param3_ty:ty $(,)?
421+
} => {
422+
extern "C" fn(_, _, _, _, _) -> _
423+
};
424+
{
425+
$($param1:ident)? $(_)?: $param1_ty:ty,
426+
$($param2:ident)? $(_)?: $param2_ty:ty,
427+
$($param3:ident)? $(_)?: $param3_ty:ty,
428+
$($param4:ident)? $(_)?: $param4_ty:ty $(,)?
429+
} => {
430+
extern "C" fn(_, _, _, _, _, _) -> _
431+
};
432+
{
433+
$($param1:ident)? $(_)?: $param1_ty:ty,
434+
$($param2:ident)? $(_)?: $param2_ty:ty,
435+
$($param3:ident)? $(_)?: $param3_ty:ty,
436+
$($param4:ident)? $(_)?: $param4_ty:ty,
437+
$($param5:ident)? $(_)?: $param5_ty:ty $(,)?
438+
} => {
439+
extern "C" fn(_, _, _, _, _, _, _) -> _
440+
};
441+
{
442+
$($param1:ident)? $(_)?: $param1_ty:ty,
443+
$($param2:ident)? $(_)?: $param2_ty:ty,
444+
$($param3:ident)? $(_)?: $param3_ty:ty,
445+
$($param4:ident)? $(_)?: $param4_ty:ty,
446+
$($param5:ident)? $(_)?: $param5_ty:ty,
447+
$($param6:ident)? $(_)?: $param6_ty:ty $(,)?
448+
} => {
449+
extern "C" fn(_, _, _, _, _, _, _, _) -> _
450+
};
451+
{
452+
$($param1:ident)? $(_)?: $param1_ty:ty,
453+
$($param2:ident)? $(_)?: $param2_ty:ty,
454+
$($param3:ident)? $(_)?: $param3_ty:ty,
455+
$($param4:ident)? $(_)?: $param4_ty:ty,
456+
$($param5:ident)? $(_)?: $param5_ty:ty,
457+
$($param6:ident)? $(_)?: $param6_ty:ty,
458+
$($param7:ident)? $(_)?: $param7_ty:ty $(,)?
459+
} => {
460+
extern "C" fn(_, _, _, _, _, _, _, _, _) -> _
461+
};
462+
{
463+
$($param1:ident)? $(_)?: $param1_ty:ty,
464+
$($param2:ident)? $(_)?: $param2_ty:ty,
465+
$($param3:ident)? $(_)?: $param3_ty:ty,
466+
$($param4:ident)? $(_)?: $param4_ty:ty,
467+
$($param5:ident)? $(_)?: $param5_ty:ty,
468+
$($param6:ident)? $(_)?: $param6_ty:ty,
469+
$($param7:ident)? $(_)?: $param7_ty:ty,
470+
$($param8:ident)? $(_)?: $param8_ty:ty $(,)?
471+
} => {
472+
extern "C" fn(_, _, _, _, _, _, _, _, _, _) -> _
473+
};
474+
{
475+
$($param1:ident)? $(_)?: $param1_ty:ty,
476+
$($param2:ident)? $(_)?: $param2_ty:ty,
477+
$($param3:ident)? $(_)?: $param3_ty:ty,
478+
$($param4:ident)? $(_)?: $param4_ty:ty,
479+
$($param5:ident)? $(_)?: $param5_ty:ty,
480+
$($param6:ident)? $(_)?: $param6_ty:ty,
481+
$($param7:ident)? $(_)?: $param7_ty:ty,
482+
$($param8:ident)? $(_)?: $param8_ty:ty,
483+
$($param9:ident)? $(_)?: $param9_ty:ty $(,)?
484+
} => {
485+
extern "C" fn(_, _, _, _, _, _, _, _, _, _, _) -> _
486+
};
487+
{
488+
$($param1:ident)? $(_)?: $param1_ty:ty,
489+
$($param2:ident)? $(_)?: $param2_ty:ty,
490+
$($param3:ident)? $(_)?: $param3_ty:ty,
491+
$($param4:ident)? $(_)?: $param4_ty:ty,
492+
$($param5:ident)? $(_)?: $param5_ty:ty,
493+
$($param6:ident)? $(_)?: $param6_ty:ty,
494+
$($param7:ident)? $(_)?: $param7_ty:ty,
495+
$($param8:ident)? $(_)?: $param8_ty:ty,
496+
$($param9:ident)? $(_)?: $param9_ty:ty,
497+
$($param10:ident)? $(_)?: $param10_ty:ty $(,)?
498+
} => {
499+
extern "C" fn(_, _, _, _, _, _, _, _, _, _, _, _) -> _
500+
};
501+
{
502+
$($param1:ident)? $(_)?: $param1_ty:ty,
503+
$($param2:ident)? $(_)?: $param2_ty:ty,
504+
$($param3:ident)? $(_)?: $param3_ty:ty,
505+
$($param4:ident)? $(_)?: $param4_ty:ty,
506+
$($param5:ident)? $(_)?: $param5_ty:ty,
507+
$($param6:ident)? $(_)?: $param6_ty:ty,
508+
$($param7:ident)? $(_)?: $param7_ty:ty,
509+
$($param8:ident)? $(_)?: $param8_ty:ty,
510+
$($param9:ident)? $(_)?: $param9_ty:ty,
511+
$($param10:ident)? $(_)?: $param10_ty:ty,
512+
$($param11:ident)? $(_)?: $param11_ty:ty $(,)?
513+
} => {
514+
extern "C" fn(_, _, _, _, _, _, _, _, _, _, _, _, _) -> _
515+
};
516+
{
517+
$($param1:ident)? $(_)?: $param1_ty:ty,
518+
$($param2:ident)? $(_)?: $param2_ty:ty,
519+
$($param3:ident)? $(_)?: $param3_ty:ty,
520+
$($param4:ident)? $(_)?: $param4_ty:ty,
521+
$($param5:ident)? $(_)?: $param5_ty:ty,
522+
$($param6:ident)? $(_)?: $param6_ty:ty,
523+
$($param7:ident)? $(_)?: $param7_ty:ty,
524+
$($param8:ident)? $(_)?: $param8_ty:ty,
525+
$($param9:ident)? $(_)?: $param9_ty:ty,
526+
$($param10:ident)? $(_)?: $param10_ty:ty,
527+
$($param11:ident)? $(_)?: $param11_ty:ty,
528+
$($param12:ident)? $(_)?: $param12_ty:ty $(,)?
529+
} => {
530+
extern "C" fn(_, _, _, _, _, _, _, _, _, _, _, _, _, _) -> _
531+
};
532+
}

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