RE: [boost] Re: MPL include problem with BOOST_PP_ITERATE

From: Aleksey Gurtovoy (agurtovoy_at_[hidden])
Date: 2003-01-25 12:53:50

Paul Mensonides wrote:
> ----- Original Message -----
> From: "Aleksey Gurtovoy" <agurtovoy_at_[hidden]>
> > You have a point, here. I'll look into the issue tonight.
> 
> Don't bother.  What Hugo is doing is a "sketchy" use of the mechanism
> precisely because of this type of problem.  Even if you efine a 
> special flag macro to distinguish a certain MPL iteration from some 
> other iteration, you are still going to have serious problems.  
> Specifically, you'd have to rewrite all of it to reenter the 
> file-iteration mechanism in an abstract and relative way, which means 
> no direct references to specific iteration frames at all.  This kind 
> of thing is the purpose of the "relative" macros, but I cannot 
> _evaluate_ the filename to iterate over.  Therefore, I cannot
> abstract the depth.

OK, I see, there is no easy way to fix it.

Hugo,

would the BOOST_PP_ANGLED_INCLUDE() mechanism Paul referred to in another
message in this thread help you to implement what you are currently trying
to do with BOOST_PP_ITERATE()? If it would, let's pursue that solution,
then, since your case _is_ somewhat special and apparently is in conflict
with "recommended" usage of file iteration mechanism.

Aleksey