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| Related articles |
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| Context sensitive scanner ? hat@se-46.wpa.wtb.tue.nl (Albert Theo Hofkamp) (1997-11-20) |
| Re: Context sensitive scanner ? johnm@non.net (1997-11-23) |
| Re: Context sensitive scanner ? pjj@cs.man.ac.uk (1997-11-23) |
| Re: Context sensitive scanner ? Mikael.Pettersson@sophia.inria.fr (Mikael Pettersson) (1997-11-23) |
| Re: Context sensitive scanner ? genew@vip.net (1997-11-23) |
| Re: Context sensitive scanner ? thetick@magelang.com (Scott Stanchfield) (1997-11-24) |
| Re: Context sensitive scanner ? cfc@world.std.com (Chris F Clark) (1997-11-28) |
| Re: Context sensitive scanner ? henry@zoo.toronto.edu (Henry Spencer) (1997-11-28) |
| Re: Context sensitive scanner ? ok@cs.rmit.edu.au (1997-11-29) |
| Re: Context sensitive scanner ? hat@se-46.wpa.wtb.tue.nl (Albert Theo Hofkamp) (1997-11-29) |
| Re: Context sensitive scanner ? thetick@magelang.com (Scott Stanchfield) (1997-11-30) |
| [5 later articles] |
| From: | genew@vip.net (Gene Wirchenko) |
| Newsgroups: | comp.compilers |
| Date: | 23 Nov 1997 20:00:10 -0500 |
| Organization: | All USENET -- http://www.Supernews.com |
| References: | 97-11-117 |
| Keywords: | syntax, lex |
Albert Theo Hofkamp <hat@se-46.wpa.wtb.tue.nl> wrote:
>We are busy writing a language where the following constructs occur:
>
>1) Literal reals (such as 1.2),
>2) Nested index operations on arrays (such as x.1.2).
>
>Obviously, indices are always unsigned positive integers.
^^^^^^^^^
"Obviously", indices are "always"
1) unsigned non-negative integers,
2) single-digit decimal numbers,
3) powers of two, and
4) literal values.
All four fit your example above. Some people consider one to be a
prime: for them, add
5) prime.
[snip]
I'm not a compiler expert, but I can tell you that "obviously" is
a dangerous word.
Sincerely,
Gene Wirchenko
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