[boost] [xpressive]: nested regular expressions for dynamic xpressive and basic_regex assignment

From: Andreas Pokorny (andreas.pokorny_at_[hidden])
Date: 2007-08-20 16:53:13

Hi Eric,
I recently tried to make recursive/nested regular expressions available for
the dynamic regex. It would be cool if you could have look at that.
http://svn.boost.org/svn/boost/branches/xpressive/nested_dynamic_regex/

To achieve that I extended the compiler traits, which now includes a
lookup for references to other regular expressions. I saw that static
regular expressions used by reference, store a weak pointer to regex
the regex impl object. For dynamic regular expressions I had to store
a pointer to the regular expression, and make the class that groups all
expressions noncopyable.

Do you see a nicer solution?

Regards
Andreas Pokorny