Re: [boost] [fusion] is there an adapter for C-arrays?

Subject: Re: [boost] [fusion] is there an adapter for C-arrays?
From: vicente.botet (vicente.botet_at_[hidden])
Date: 2010-02-06 20:55:11

----- Original Message ----- 
From: "Christopher Schmidt" <mr.chr.schmidt_at_[hidden]>
To: <boost_at_[hidden]>
Sent: Sunday, February 07, 2010 2:19 AM
Subject: Re: [boost] [fusion] is there an adapter for C-arrays?

> 
> vicente.botet schrieb:
>>> On 2/7/2010 3:34 AM, vicente.botet wrote:
>>>> Hi,
>>>>
>>>> I need to visit the members of a C++ type using Fusion sequences. For structures I plan
>>>> to use BOOST_FUSION_ADAPT_STRUCT. I need also to visit also c-arrays (with static
>>>> size). I see that there is already an adapter for boost::array. Is there an adapter for
>>>> C-arrays?
>>>
>>> Sorry, no. Would you want to contribute one? It's easy if you
>>> take a look at the boost::array adapter.
>> 
>> Hi, 
>> 
>> Well if doesn't exists I will need to see how to do it :) I will inform you when I reach to get something.
> 
> I just added an implementation for adapting plain arrays to the c++0x
> branch of fusion. You can find the code here:
> 
> https://svn.boost.org/trac/boost/browser/sandbox/SOC/2009/fusion/boost/fusion/adapted/array.hpp
> https://svn.boost.org/trac/boost/browser/sandbox/SOC/2009/fusion/boost/fusion/adapted/detail/po_array
> 
>> 
> [snip]
>> 
>> Is there a simple way to implement this flat view? Or even better, is it already available?
> 
> It is. Check the (undocumented) code in the ext_-directories.
> 
> https://svn.boost.org/trac/boost/browser/trunk/boost/fusion/container/ext_/tree.hpp
> https://svn.boost.org/trac/boost/browser/trunk/boost/fusion/algorithm/iteration/ext_/for_each_s.hpp
> 
> Unfortunately the code is pretty much broken at the moment.
> 
> https://svn.boost.org/trac/boost/ticket/3858
> 
> -Christopher

Hi,

thanks for all these pointers. I was starting to implement it,when DING, your post appeared. I'm sure I would made  a lot of errors before reaching to run the test.

Do you know if it is planned to document the tree extension soon? Is there any post about this subject?

Just a remark most of the .hpp files on po_array are not self contained as the structure po_array_tag is not declared in th file.

Thanks again,
Vicente