[C++-sig] Pyste suggestion: handling void * arguments

[Nicodemus]

Niall Douglas wrote:

>Any chance of pyste doing http://mail.python.org/pipermail/c++-
>sig/2003-April/003781.html for us automatically?
>
>Even a cast to opaque type VOIDPTR would be fine by me.
>  
>

How about this code (based on Dave's suggestion) for this foo:

void* foo(void *x) { return x; }

generated:

struct void_ptr{
    void_ptr(void* it_): it(it_) {}
    void* it;   
};


void_ptr* foo_w(void_ptr* x) { return new void_ptr(foo(x->it)); }

BOOST_PYTHON_OPAQUE_SPECIALIZED_TYPE_ID(void_ptr);

BOOST_PYTHON_MODULE(test)
{
    def("foo", foo_w, return_value_policy<return_opaque_pointer>());
}
 

Obviously, the point of it is to only work around the limitation that 
opaque_pointer's doesn't support void*. If you want to some how fiddle 
with the contents of the void*, you will have to write some wrappers 
that do some conversion on the C++ side.

Opinions? If everyone is fine with it, I can implement this in the next 
couple of days.

Regards,
Nicodemus.