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[Python-Dev] (ctypes example) libffi embedded in CPython

Maciej Fijalkowski fijall at gmail.com
Wed Mar 11 22:13:29 CET 2015 
On Wed, Mar 11, 2015 at 8:17 PM, Antoine Pitrou <solipsis at pitrou.net> wrote:
> On Wed, 11 Mar 2015 19:05:57 +0100
> Antoine Pitrou <solipsis at pitrou.net> wrote:
>> > >
>> > > But they are not ctypes. For example, cffi wouldn't be obvious to use
>> > > for interfacing with non-C code, since it requires you to write C-like
>> > > declarations.
>> >
>> > You mean like Fortran? Or what precisely?
>>
>> Any toolchain that can generate native code. It can be Fortran, but it
>> can also be code generated at runtime without there being any external
>> declaration. Having to generate "C declarations" for such code would be
>> a distraction.
>
> For instance, you can look at the compiler example that Eli wrote using
> llvmlite. It implements a JIT compiler for a toy language. The
> JIT-compiled function is then declared and called using a simple ctypes
> declaration:
>
> https://github.com/eliben/pykaleidoscope/blob/master/chapter7.py#L937
>
> Regards
>
> Antoine.

It might be a matter of taste, but I don't find declaring C functions
any more awkward than using strange interface that ctypes comes with.
the equivalent in cffi would be ffi.cast("double (*)()", x)
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