Re: [boost] [fusion] segmented fusion 2.0

Subject: Re: [boost] [fusion] segmented fusion 2.0
From: Joel de Guzman (joel_at_[hidden])
Date: 2011-08-11 20:58:25

On 8/12/2011 8:37 AM, Eric Niebler wrote:
> On 8/11/2011 5:19 PM, Joel de Guzman wrote:
>> And, looking at the code, the implementation looks very sumptuous.
>> I get indigestion with the old code :P
> 
> No kidding! That code was horrible. This code is still complex, but at
> least this time around I documented everything with pseudocode. It has
> helped immensely.
> 
>> (Aside: we should talk about naming ext_ into something more obvious.
>> Before it was a hidden curiosity. Now it seems its ready to take
>> front stage).
> 
> That's what I referred to by "baking it in". I imagine that all the ext_
> directories go away, and segmentation support just becomes a native part
> of Fusion. These things would need to change:
> 
> - We find a new home for segmented_iterator.hpp et. al.
> - Sequence intrinsics (begin, end, size, empty) have meaningful default
> implementations for segmented data structures.
> - As many algorithms as possible should dispatch to segmented flavors
> when appropriate. E.g., ext_/fold_s.hpp just gets merged into fold.hpp.
> - Fusion containers and views that are segmented (joint_view) advertize
> themselves as such, and the rest of their implementation goes away.

Sounds like a plan. If you have some initial sketch/notes that
you can share, I'd love to get in the same page with you and share
some effort to get this going asap.

Regards,
-- 
Joel de Guzman
http://www.boostpro.com
http://boost-spirit.com