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Groups > comp.lang.c > #103468

Re: C Names and Scopes

From Ben Bacarisse <ben.usenet@bsb.me.uk>
Newsgroups comp.lang.c
Subject Re: C Names and Scopes
Date 2017-02-08 14:32 +0000
Organization A noiseless patient Spider
Message-ID <87inokah37.fsf@bsb.me.uk> (permalink)
References <o7duoo$vmp$1@dont-email.me> <f5ef390c-fbda-4644-8e35-6f19f6d6e6c1@googlegroups.com> <o7evtg$fk1$1@dont-email.me>

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BartC <bc@freeuk.com> writes:
<snip>
> ... although C's block scopes are going to be a bit of a
> challenge. I've developed a scheme to deal with them efficientlu but
> still need to try it out. But it is essential that I know exactly what
> the capabilities are, including all the corner cases that even
> experienced C coders don't know exist.
>
> (With block scopes, here is one tricky case:
>
>    int A;        // A1
>    { A = 0;      // A1
>      int A;      // A2
>      A = 0;      // A2
>    }
>
> Supposed this is parsed to an AST, without doing name resolving. By
> then, I have A1 in the outer scope, and A2 in the inner one.

I don't think you can parse C without name resolving as you go because
of the typedef issue.  Since you have to keep a symbol table for that,
you might as well use it for other things.

Logically, nested scopes are just a stack or maps.  A linked list of
hash tables would be one model of that and might even be reasonably
efficient for normal C code.

<snip>
-- 
Ben.

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Thread

C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 02:13 +0000
  Re: C Names and Scopes David Brown <david.brown@hesbynett.no> - 2017-02-08 10:09 +0100
    Re: C Names and Scopes mark.bluemel@gmail.com - 2017-02-08 02:37 -0800
      Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 11:07 +0000
        Re: C Names and Scopes fir <profesor.fir@gmail.com> - 2017-02-08 09:03 -0800
          Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 17:19 +0000
            Re: C Names and Scopes fir <profesor.fir@gmail.com> - 2017-02-08 09:42 -0800
      Re: C Names and Scopes David Brown <david.brown@hesbynett.no> - 2017-02-08 12:08 +0100
    Re: C Names and Scopes Moai <penultimategrill@gmail.com> - 2017-02-08 19:16 -0500
      Re: C Names and Scopes David Brown <david.brown@hesbynett.no> - 2017-02-09 01:32 +0100
      Re: C Names and Scopes Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-09 08:18 -0800
      Re: C Names and Scopes Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-09 12:06 -0500
  Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 10:51 +0000
  Re: C Names and Scopes Thiago Adams <thiago.adams@gmail.com> - 2017-02-08 03:11 -0800
    Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 11:39 +0000
      Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 12:06 +0000
        Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 13:31 +0000
        Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 13:40 +0000
          Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-08 16:39 +0000
            Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 17:51 +0000
              Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-08 20:56 +0000
                Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 22:08 +0000
                Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-08 23:27 +0000
      Re: C Names and Scopes David Brown <david.brown@hesbynett.no> - 2017-02-08 13:41 +0100
      Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-08 14:32 +0000
        Re: C Names and Scopes supercat@casperkitty.com - 2017-02-08 07:28 -0800
          Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 20:12 +0000
            Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-02-08 12:38 -0800
              Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 21:54 +0000
                Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-08 22:40 +0000
  Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-09 18:48 +0000
    Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-09 19:53 +0000
      Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-02-09 12:25 -0800
        Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-09 21:27 +0000
          Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-02-09 13:57 -0800
            Re: C Names and Scopes David Brown <david.brown@hesbynett.no> - 2017-02-13 10:54 +0100
        Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-10 00:26 +0000
          Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-10 00:42 +0000
            Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-10 01:03 +0000
              Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-10 01:49 +0000
                Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-10 12:31 +0000
                Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-10 23:48 +0000
                Re: C Names and Scopes supercat@casperkitty.com - 2017-02-10 16:06 -0800
                Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-02-10 16:22 -0800
                Re: C Names and Scopes supercat@casperkitty.com - 2017-02-12 09:17 -0800
                Re: C Names and Scopes Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-15 16:26 -0800
              Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-02-09 17:56 -0800
              Re: C Names and Scopes supercat@casperkitty.com - 2017-02-10 07:42 -0800
                Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-02-10 08:44 -0800
                Re: C Names and Scopes supercat@casperkitty.com - 2017-02-10 09:25 -0800
                Re: C Names and Scopes Jerry Stuckle <jstucklex@attglobal.net> - 2017-02-10 16:43 -0500
                Re: C Names and Scopes supercat@casperkitty.com - 2017-02-10 14:04 -0800
                Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-10 22:52 +0000
                Re: C Names and Scopes Andrey Tarasevich <andreytarasevich@hotmail.com> - 2017-02-10 15:10 -0800
        Re: C Names and Scopes Tim Rentsch <txr@alumni.caltech.edu> - 2017-02-15 16:31 -0800
      Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-09 23:09 +0000
        Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-09 23:36 +0000
          Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-02-10 00:19 +0000
            Re: C Names and Scopes Ben Bacarisse <ben.usenet@bsb.me.uk> - 2017-02-10 00:38 +0000
  Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-03-04 01:23 +0000
    Re: C Names and Scopes jameskuyper@verizon.net - 2017-03-03 18:23 -0800
      Re: C Names and Scopes GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-04 14:42 +0100
        Re: C Names and Scopes "James R. Kuyper" <jameskuyper@verizon.net> - 2017-03-04 11:02 -0500
          Re: C Names and Scopes GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-04 23:35 +0100
            Re: C Names and Scopes Malcolm McLean <malcolm.mclean5@btinternet.com> - 2017-03-04 14:50 -0800
            Re: C Names and Scopes Richard Heathfield <rjh@cpax.org.uk> - 2017-03-05 13:39 +0000
              Re: C Names and Scopes GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-05 15:10 +0100
                Re: C Names and Scopes Richard Heathfield <rjh@cpax.org.uk> - 2017-03-05 14:34 +0000
                Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-03-05 19:25 -0800
              Re: C Names and Scopes raltbos@xs4all.nl (Richard Bos) - 2017-03-06 09:37 +0000
                Re: C Names and Scopes Richard Heathfield <rjh@cpax.org.uk> - 2017-03-06 10:34 +0000
                Re: C Names and Scopes James Kuyper <jameskuyper@verizon.net> - 2017-03-06 07:23 -0500
                Re: C Names and Scopes GOTHIER Nathan <nathan.gothier@gmail.com> - 2017-03-06 14:26 +0100
    Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-03-04 11:52 -0800
      Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-03-04 20:13 +0000
        Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-03-04 20:17 +0000
        Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-03-04 12:38 -0800
        Re: C Names and Scopes jameskuyper@verizon.net - 2017-03-04 13:50 -0800
          Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-03-04 22:37 +0000
            Re: C Names and Scopes jameskuyper@verizon.net - 2017-03-04 16:15 -0800
              Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-03-05 00:31 +0000
                Re: C Names and Scopes jameskuyper@verizon.net - 2017-03-04 16:47 -0800
                Re: C Names and Scopes BartC <bc@freeuk.com> - 2017-03-05 01:42 +0000
                Re: C Names and Scopes jameskuyper@verizon.net - 2017-03-04 19:20 -0800
                Re: C Names and Scopes Keith Thompson <kst-u@mib.org> - 2017-03-05 01:40 -0800

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