Calling D from C - What's the present status?

[Kirk McDonald]

Frits van Bommel wrote:
> Bill Baxter wrote:
> 
>> Seems like there should be a single handy extern (C) function in 
>> phobos to handle that standard startup and shutdown stuff.  I've seen 
>> a couple of D programs that do this manually (I think the most recent 
>> was one of Kirk's PyD samples).  Is there some reason that stuff can't 
>> just be thrown in a single DRuntimeInit / DRuntimeClose pair of 
>> functions?
> 
> 
> Well, for one thing, the standard wrapper also catches exceptions. 
> That's kind of hard to do with a pair of functions. Other than that, I 
> don't see a problem with it.
> 

Each function that is directly exposed to C must ensure that exceptions 
do not escape from your D code. Pyd does this with a handy function 
template that translates D exceptions into Python exceptions:
     http://pyd.dsource.org/except_wrapping.html
You will probably have to think of some other way to handle exceptions 
escaping from D, but something like Pyd's exception_catcher is one 
solution to consider.

-- 
Kirk McDonald
Pyd: Wrapping Python with D
http://pyd.dsource.org