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Subject: Re: [boost] [regex] How robust are the <boost/regex/pending/unicode_iterator.hpp> adapters?
From: John Maddock (boost.regex_at_[hidden])
Date: 2011-07-20 03:43:58

>> Actually, I'm thinking that the fix may be easier than I thought after
>> all
>> - if I add a 2-arg "range-checked" constructor as an overload, then the
>> iterator's constructor can validate the end-points of the underlying
>> sequence during construction, and there's no need to otherwise change the
>> implementation or add overhead by checking every increment/decrement for
>> movement out-of-range because we'll know that it can't happen.
> ...unless the characters are modified in between traversal operations. I
> don't know if that's a legitimate concern or not, just thought I'd bring
> it
> up :/ *If* it's remotely a concern, probably sufficient to just document
> this limitation...?

IMO changing the underlying sequence while you're iterating over it with an
adapter is a recipe for disaster anyway, so no I don't think it's an issue
in practice.


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