From: Robert Dober <robert.dober@...>
Date: 2006-09-14T05:49:39+09:00
Subject: Re: Regular expression question.

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On 9/13/06, Paul Lutus <nospam@nosite.zzz> wrote:
>
> L7 wrote:
>
> / ...
>
> > I dont think it applies to this directly. I didnt explicitly mention,
> > but the processing is happening on a line-by-line basis. In order to
> > remove all commenting in the above manner I would first have to read
> > the file as a string, strip, split on newline then parse code.
>
> Yes, and that may be the best way to approach this problem. There are a
> number of problems where reading the entire file and processing it as a
> long string is the best (one is tempted to say the only) way to proceed.
>
> If you don't read the entire file, then you are obliged to carry more
> state
> information in your algorithm between lines. IMHO, it is much better to
> eliminate multiline comments in one go than to construct and maintain
> state
> flags for this and any other contingencies that may carry over between
> lines.
>
> Obviously this poses practical problems for huge source files, but, again
> IMHO, huge source files should not exist anyway -- they should be broken
> up
> into manageable chunks.
>
> --
> Paul Lutus
> http://www.arachnoid.com
>
>
I am intrigued, I believe that the regular expression to find all comments
in C must be very complex and probably not the correct tool, look at these
snipplets

//  /*
if(strcmp(x,"*/")
// "*/
etc. etc.

BTW I cannot find a reason why the job cannot be done by a regular
expression but that does not mean it can :(
Robert

--=20
Deux choses sont infinies : l'univers et la b=EAtise humaine ; en ce qui
concerne l'univers, je n'en ai pas acquis la certitude absolue.

- Albert Einstein

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