Boost logo

Boost :

Subject: [boost] Interprocess regexes
From: Mike Spertus (mike_spertus_at_[hidden])
Date: 2009-12-04 11:00:08

I would like to store regexes in shared memory, but it seems like Boost
regex falls just barely short of supporting this.

In the basic_regex documentation, it says "The definition of
basic_regex... is based very closely on class basic_string and fulfils
the requirements for a constant-container of charT." This may be
technically correct, however basic_string and other containers take an
allocator template argument, while basic_regex does not.

If basic_regex had an allocator it would reap all the same benefits that
other string and container types do. In particular, it would be possible
to use boost::interprocess to place them in shared memory. Since the
allocator would be defaulted to allocator<charT>, I think it would IMO
be compatible with the vast majority of existing code (not quite all
because template<class charT, class traits> void f(basic_regex<charT,
traits>) wouldn't work).

Does this make sense? Do others agree that it would make regexes more
like other strings and containers as advertised?



Boost list run by bdawes at, gregod at, cpdaniel at, john at