[Cython] Syntax to declare a c++ class?

[Robert Bradshaw]

On May 6, 2009, at 12:48 PM, Dag Sverre Seljebotn wrote:

> Robert Bradshaw wrote:
>> Just trying to get a syntax, how about
>>
>> cdef extern from "header.h":
>>      cdef cclass MyClass[TemplateParamers](BaseCPPClass):
>>          int member
>>          int method(int)
>>
>> The only concern I have is whether or not "cdef cclass" is to similar
>> to "cdef class" (probably not). Any other ideas?
>
> cdef cppclass?

I don't like this one, but I think just for aesthetic reasons. Nor  
cpp_class.

> Yes, I think cclass is to similar to class.
>
> Anyway, when I proposed a Fortran syntax earlier you and Stefan made a
> good point about the language specification belonging in the "cdef  
> extern"
> part, as, after all, the "header.h" file contains only C++ code.

Will the compiler need to know that header.h is C++ code? If not, I  
see no reason to declare it.

> Also consider that C++ needs namespace specifications, for instance
>
> cdef extern ...:
>     namespace std:
>         cdef cppclass vector[T]: ...
>
> or
>
> cdef cclass std::vector[T]: ...

Yep. That too. I'm a fan of both declarations. (Or even rolling the  
"namespace" into the cdef extern statement.)

- Robert