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Re: gcc needs a curly bracket matching/counting function

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From Keith Thompson <kst-u@mib.org>
Newsgroups comp.lang.c
Subject Re: gcc needs a curly bracket matching/counting function
Date Tue, 20 Dec 2016 12:16:38 -0800
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BartC <bc@freeuk.com> writes:
> On 20/12/2016 18:52, DFS wrote:
>> On 12/20/2016 12:04 PM, Ben Bacarisse wrote:
>>> #define OPEN {
>>>
>>> int main(void) OPEN }
>>>
>>> <snip>
>>
>> This one's easy: delete or ignore the #define line and replace ' OPEN '
>> with an opening curly bracket every time it's found.  When I say delete
>> I don't mean alter the source of course.
>
> It's a bit harder than that. OPEN could result from expanding another macro.
>
> Or there could be 100 macros all defined as {, or that include { in 
> their definition.
>
> You also now have to scan and look up all identifiers, as well as having 
> to actually deal with #define and #undef.
>
> But OPEN could also be defined inside an #include file. Or is part of a 
> conditional block so that it might be defined as { or } or anything else 
> according to some compiler option.
>
> So you can't deal with it 100% without implementing a full 
> pre-processor, and even that might depend on how a compiler is invoked.

Yes, but dealing with it 99% is probably good enough.

If the code doesn't use macros, digraphs, or trigraphs to hide braces,
existing tools can be used to find any missing braces.  If it does, I
probably don't care about fixing it.

-- 
Keith Thompson (The_Other_Keith) kst-u@mib.org  <http://www.ghoti.net/~kst>
Working, but not speaking, for JetHead Development, Inc.
"We must do something.  This is something.  Therefore, we must do this."
    -- Antony Jay and Jonathan Lynn, "Yes Minister"

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gcc needs a curly bracket matching/counting function DFS <nospam@dfs.com> - 2016-12-19 20:38 -0500
  Re: gcc needs a curly bracket matching/counting function Richard Heathfield <rjh@cpax.org.uk> - 2016-12-20 01:59 +0000
    Re: gcc needs a curly bracket matching/counting function DFS <nospam@dfs.com> - 2016-12-19 22:30 -0500
      Re: gcc needs a curly bracket matching/counting function Robert Spanjaard <spamtrap@arumes.com> - 2016-12-20 11:46 +0100
      Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-20 13:20 +0000
        Re: gcc needs a curly bracket matching/counting function Richard Heathfield <rjh@cpax.org.uk> - 2016-12-20 13:30 +0000
        Re: gcc needs a curly bracket matching/counting function "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-12-20 05:35 -0800
          Re: gcc needs a curly bracket matching/counting function David Brown <david.brown@hesbynett.no> - 2016-12-21 12:07 +0100
            Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-21 12:46 +0000
              Re: gcc needs a curly bracket matching/counting function David Brown <david.brown@hesbynett.no> - 2016-12-21 15:10 +0100
                Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-21 17:10 +0000
                Re: gcc needs a curly bracket matching/counting function David Brown <david.brown@hesbynett.no> - 2016-12-21 19:50 +0100
                Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-21 20:15 +0000
                Re: gcc needs a curly bracket matching/counting function Ike Naar <ike@iceland.freeshell.org> - 2016-12-21 22:36 +0000
                Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-21 23:46 +0000
                Re: gcc needs a curly bracket matching/counting function Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-22 01:54 +0000
                Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-22 12:16 +0000
                Re: gcc needs a curly bracket matching/counting function Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-22 13:06 +0000
                Re: gcc needs a curly bracket matching/counting function asetofsymbols@gmail.com - 2016-12-22 05:25 -0800
                Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-22 13:34 +0000
                Re: gcc needs a curly bracket matching/counting function asetofsymbols@gmail.com - 2016-12-22 08:16 -0800
                Re: gcc needs a curly bracket matching/counting function Keith Thompson <kst-u@mib.org> - 2016-12-22 09:30 -0800
                Re: gcc needs a curly bracket matching/counting function luser droog <luser.droog@gmail.com> - 2016-12-22 09:40 -0800
                Re: gcc needs a curly bracket matching/counting function "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-12-22 05:33 -0800
                Re: gcc needs a curly bracket matching/counting function "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-12-22 05:41 -0800
                Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-22 14:53 +0000
                Re: gcc needs a curly bracket matching/counting function asetofsymbols@gmail.com - 2016-12-22 08:11 -0800
                Re: gcc needs a curly bracket matching/counting function "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-12-22 08:27 -0800
                Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-22 16:48 +0000
                Re: gcc needs a curly bracket matching/counting function "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-12-22 09:27 -0800
                Re: gcc needs a curly bracket matching/counting function Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-22 20:12 +0000
                Re: gcc needs a curly bracket matching/counting function "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-12-22 12:18 -0800
              Re: gcc needs a curly bracket matching/counting function Keith Thompson <kst-u@mib.org> - 2016-12-21 09:04 -0800
                Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-21 17:24 +0000
                Re: gcc needs a curly bracket matching/counting function Keith Thompson <kst-u@mib.org> - 2016-12-21 09:41 -0800
                Re: gcc needs a curly bracket matching/counting function Ian Collins <ian-news@hotmail.com> - 2016-12-22 18:10 +1300
                Re: gcc needs a curly bracket matching/counting function Ian Collins <ian-news@hotmail.com> - 2016-12-29 14:50 +1300
                Re: gcc needs a curly bracket matching/counting function Tim Rentsch <txr@alumni.caltech.edu> - 2017-01-02 02:07 -0800
                Re: gcc needs a curly bracket matching/counting function David Brown <david.brown@hesbynett.no> - 2017-01-02 11:16 +0100
                Re: gcc needs a curly bracket matching/counting function Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-28 16:40 -0800
            Re: gcc needs a curly bracket matching/counting function Keith Thompson <kst-u@mib.org> - 2016-12-21 08:52 -0800
              Re: gcc needs a curly bracket matching/counting function David Brown <david.brown@hesbynett.no> - 2016-12-21 20:16 +0100
                Re: gcc needs a curly bracket matching/counting function David Brown <david.brown@hesbynett.no> - 2016-12-22 09:41 +0100
      Re: gcc needs a curly bracket matching/counting function Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-20 17:04 +0000
        Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-20 18:46 +0000
          Re: gcc needs a curly bracket matching/counting function Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-20 21:55 +0000
        Re: gcc needs a curly bracket matching/counting function DFS <nospam@dfs.com> - 2016-12-20 13:52 -0500
          Re: gcc needs a curly bracket matching/counting function Richard Heathfield <rjh@cpax.org.uk> - 2016-12-20 19:09 +0000
          Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-20 19:14 +0000
            Re: gcc needs a curly bracket matching/counting function Keith Thompson <kst-u@mib.org> - 2016-12-20 12:16 -0800
              Re: gcc needs a curly bracket matching/counting function Gareth Owen <gwowen@gmail.com> - 2016-12-20 20:53 +0000
                Re: gcc needs a curly bracket matching/counting function Keith Thompson <kst-u@mib.org> - 2016-12-20 13:51 -0800
                Re: gcc needs a curly bracket matching/counting function Gareth Owen <gwowen@gmail.com> - 2016-12-29 18:49 +0000
                Re: gcc needs a curly bracket matching/counting function Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-28 16:36 -0800
                Re: gcc needs a curly bracket matching/counting function David Brown <david.brown@hesbynett.no> - 2016-12-29 12:44 +0100
              Re: gcc needs a curly bracket matching/counting function bart4858@gmail.com - 2016-12-20 13:25 -0800
                Re: gcc needs a curly bracket matching/counting function Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-12-20 13:39 -0800
                Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-20 21:58 +0000
                Re: gcc needs a curly bracket matching/counting function Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-12-20 14:05 -0800
                Re: gcc needs a curly bracket matching/counting function Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-20 22:17 +0000
                Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2017-01-26 19:03 +0000
                Re: gcc needs a curly bracket matching/counting function Keith Thompson <kst-u@mib.org> - 2016-12-20 14:31 -0800
                Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-20 23:21 +0000
                Re: gcc needs a curly bracket matching/counting function Keith Thompson <kst-u@mib.org> - 2016-12-20 15:51 -0800
                Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-21 00:38 +0000
                Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2017-01-26 19:11 +0000
    Re: gcc needs a curly bracket matching/counting function mark.bluemel@gmail.com - 2016-12-20 00:50 -0800
  gcc needs a curly bracket matching/counting function "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-12-19 18:11 -0800
    Re: gcc needs a curly bracket matching/counting function fir <profesor.fir@gmail.com> - 2016-12-20 03:00 -0800
      Re: gcc needs a curly bracket matching/counting function Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-12-20 03:50 -0800
        Re: gcc needs a curly bracket matching/counting function fir <profesor.fir@gmail.com> - 2016-12-20 05:20 -0800
    Re: gcc needs a curly bracket matching/counting function DFS <nospam@dfs.com> - 2016-12-20 13:46 -0500
      Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-20 18:59 +0000
      Re: gcc needs a curly bracket matching/counting function Richard Heathfield <rjh@cpax.org.uk> - 2016-12-20 19:02 +0000
        Re: gcc needs a curly bracket matching/counting function Keith Thompson <kst-u@mib.org> - 2016-12-20 12:13 -0800
          Re: gcc needs a curly bracket matching/counting function Richard Heathfield <rjh@cpax.org.uk> - 2016-12-20 20:25 +0000
      Re: gcc needs a curly bracket matching/counting function Robert Spanjaard <spamtrap@arumes.com> - 2016-12-20 20:35 +0100
  Re: gcc needs a curly bracket matching/counting function David Brown <david.brown@hesbynett.no> - 2016-12-20 08:56 +0100
  Re: gcc needs a curly bracket matching/counting function Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-12-20 02:26 -0800
    Re: gcc needs a curly bracket matching/counting function Richard Heathfield <rjh@cpax.org.uk> - 2016-12-20 10:41 +0000
      Re: gcc needs a curly bracket matching/counting function Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-12-20 02:52 -0800
        Re: gcc needs a curly bracket matching/counting function Richard Heathfield <rjh@cpax.org.uk> - 2016-12-20 11:00 +0000
          Re: gcc needs a curly bracket matching/counting function Malcolm McLean <malcolm.mclean5@btinternet.com> - 2016-12-20 03:19 -0800
            Re: gcc needs a curly bracket matching/counting function Richard Heathfield <rjh@cpax.org.uk> - 2016-12-20 11:31 +0000
            Re: gcc needs a curly bracket matching/counting function Ben Bacarisse <ben.usenet@bsb.me.uk> - 2016-12-20 17:21 +0000
              Re: gcc needs a curly bracket matching/counting function Richard Heathfield <rjh@cpax.org.uk> - 2016-12-20 17:49 +0000
                Re: gcc needs a curly bracket matching/counting function David Brown <david.brown@hesbynett.no> - 2016-12-21 12:25 +0100
                Re: gcc needs a curly bracket matching/counting function Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-29 01:14 -0800
    Re: gcc needs a curly bracket matching/counting function Keith Thompson <kst-u@mib.org> - 2016-12-20 09:07 -0800
      Re: gcc needs a curly bracket matching/counting function Richard Heathfield <rjh@cpax.org.uk> - 2016-12-20 17:14 +0000
        Re: gcc needs a curly bracket matching/counting function Keith Thompson <kst-u@mib.org> - 2016-12-20 09:33 -0800
          Re: gcc needs a curly bracket matching/counting function Richard Heathfield <rjh@cpax.org.uk> - 2016-12-20 17:39 +0000
          Re: gcc needs a curly bracket matching/counting function "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-12-20 09:45 -0800
      Re: gcc needs a curly bracket matching/counting function gazelle@shell.xmission.com (Kenny McCormack) - 2016-12-20 17:56 +0000
        Re: gcc needs a curly bracket matching/counting function "Rick C. Hodgin" <rick.c.hodgin@gmail.com> - 2016-12-20 10:01 -0800
    Re: gcc needs a curly bracket matching/counting function Ian Collins <ian-news@hotmail.com> - 2016-12-21 07:44 +1300
  Re: gcc needs a curly bracket matching/counting function BartC <bc@freeuk.com> - 2016-12-20 10:46 +0000
  Re: gcc needs a curly bracket matching/counting function Ike Naar <ike@iceland.freeshell.org> - 2016-12-20 22:00 +0000
    Re: gcc needs a curly bracket matching/counting function Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-28 16:39 -0800
  Re: gcc needs a curly bracket matching/counting function Ken Brody <kenbrody@spamcop.net> - 2016-12-22 12:12 -0500
  Re: gcc needs a curly bracket matching/counting function Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2016-12-22 12:59 -0700
  Re: gcc needs a curly bracket matching/counting function Tim Rentsch <txr@alumni.caltech.edu> - 2016-12-28 16:10 -0800

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