From: "David A. Black" <dblack@...>
Date: 2005-04-21T02:23:57+09:00
Subject: Re: Linear complete variation of MatchData#to_a, possible?

Hi --

On Thu, 21 Apr 2005, Trans wrote:

> Hi Capitain--
>
> Pit Capitain wrote:
>> Do you really think that you want this nesting? I'd expect something
> like
>>
>>    [ "0", [ [ "1" ], [ "2", [ "3" ] ], [ "4" ] ], "5" ]
>>
>> Could you try to specify the rules for your desired nesting and
>> splitting? I think it should be possible to implement something like
> this.
>
> Your nesting will work too. I excluded a couple layers were I felt it
> wasn't significant. I think the pre and post matches can just be the
> first and last elements respectively, so another that nesting isn't
> relly needed (IMHO). But you may be quite right about the next layer. I
> had thought it might be dropped without issue, but perhaps it is in
> fact neccessary to keep the nesting consistant with the subexpressions.
> Nonetheless, yes, you have the idea. Can it be done? I'm not sure how
> one would "query" the level of subexpression nesting.

You could probably do something with MatchData#offset.  The offsets of
the various captures can be compared to see whether or not they
overlap.  No doubt there's a way to do this with inject (paging Robert
K. :-)


David

-- 
David A. Black
dblack@wobblini.net