[pypy-dev] rffi strict typing

[Maciek Fijalkowski]

Simon Burton wrote:
> On Wed, 22 Aug 2007 15:23:40 -0700
> Simon Burton <simon at arrowtheory.com> wrote:
>
>   
>> Following some hints from Samuele, I am trying to wrap such functions in
>> another function that does some casting. 
>>     
>
> Here is the latest:
>
>
> def softwrapper(funcptr, arg_tps):
>     unrolling_arg_tps = unrolling_iterable(enumerate(arg_tps))
>     def softfunc(*args):
>         real_args = ()
>         for i, tp in unrolling_arg_tps:
>             real_args = real_args + (args[i],)
>         result = funcptr(*real_args)
>         return result
>     return softfunc
>
> When applied to llexternal's that have pointer-to-struct args
> the generated c code breaks; it decides to declare&use anonymous
> structs:
>
> long pypy_g_softfunc_star2_1(struct pypy__cairo_surface0 *l_stararg0_7, struct pypy_array3 *l_stararg1_7) {
> 	long l_v492;
>
>     block0:
> 	l_v492 = cairo_surface_write_to_png(l_stararg0_7, l_stararg1_7);
> 	goto block1;
>
>     block1:
> 	RPY_DEBUG_RETURN();
> 	return l_v492;
> }
>
> where cairo_surface_write_to_png is declared:
>
> cairo_surface_write_to_png (cairo_surface_t	*surface,
> 			    const char		*filename);
>
>
> I wonder if the annotator is getting confused by the real_args tuple growing...
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>
> :.
>
>   

You need to create the structure which you push by hand. As well as 
array argument.

:.