[Pyrex] ANN: Pyrex 0.9.4 - LValue Casts are Dead!

[Lenard Lindstrom]

On 20 Apr 2006 at 21:50, Greg Ewing wrote:

> Lenard Lindstrom wrote:
> 
> > When will an external C++ declaration ever be needed? Writing an 
> > include file when one is missing for a C++ library will likely be 
> > necessary anyways since class declarations are not possible with 
> > Pyrex.
> 
> To give you a sneak preview of what I have in mind:
> 
>    cdef char *silly()   # This function uses "extern C" linkage
> 
>    cdef+ char *walk()   # This function uses C++ linkage
> 
>    cdef+ struct Foo:    # This is a C++ struct/class
>      int spam
>      virtual void grail(char *nun)  #  ...and consequently can have methods
> 
> Generally, anything C++ will be declared with cdef+,
> and anything C will be declared with cdef. In the
> interests of simplicity and consistency, I would like
> to retain this rule even inside cdef extern from
> (or cdef+ extern from, for C++ header files).
> 
> While you might get away with using cdef instead of
> cdef+ for some things in an external header, this will
> not be supported and will officially be regarded as
> illegal.
> 
This is intriguing. Will this be just for handing external 
declarations, or will new class declaration/definition be possible?

Lenard Lindstrom
<len-l at telus.net>