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Subject: Re: [boost] Boost policy for putting headers in boost/ Was: #3541Support <boost/ptr_map.hpp>
From: Stewart, Robert (Robert.Stewart_at_[hidden])
Date: 2009-11-02 14:18:35

Joel de Guzman wrote:
> David Abrahams wrote:
> >
> > Have you actually got a name clash situation like that one, BTW?
> Yes. Spirit2 includes both "classic" and "qi" in there as well
> as "karma". There are lots of similar names such as rule.hpp,
> grammar.hpp that are found in each of the modules. In our flat
> include, we have to prepend them with "classic", "qi" and "karma"
> to disambiguate. Compare these (flat vs. modular) files for instance:
> #include <boost/spirit/qi/nonterminal/grammar.hpp>
> #include <boost/spirit/include/qi_grammar.hpp>
> And this:
> #include <boost/spirit/karma/nonterminal/grammar.hpp>
> #include <boost/spirit/include/karma_grammar.hpp>

That makes the "include" subdirectory that much worse. There should only be one way to find the required header contents.

I don't have a problem with the general idea of modularizing a library. It does follow the top level directory pattern nicely. I still would rather have less clutter in a given directory by pushing something akin to "all.hpp" into the subdirectory rather than near-duplicating the directory name, but the alternative is consistent and usable.

Rob Stewart robert.stewart_at_[hidden]
Software Engineer, Core Software using std::disclaimer;
Susquehanna International Group, LLP

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