Re: detecting ambiguous grammars

genew@shuswap.net (Gene Wirchenko)
27 Mar 2001 23:45:16 -0500

          From comp.compilers
Related articles
[7 earlier articles]
Re: detecting ambiguous grammars dlester@cs.man.ac.uk (2001-03-10)
Re: detecting ambiguous grammars thant@acm.org (Thant Tessman) (2001-03-12)
Re: detecting ambiguous grammars christian.bau@isltd.insignia.com (2001-03-22)
Re: detecting ambiguous grammars thant@acm.org (Thant Tessman) (2001-03-26)
Re: detecting ambiguous grammars joachim_d@gmx.de (Joachim Durchholz) (2001-03-26)
Re: detecting ambiguous grammars cfc@world.std.com (Chris F Clark) (2001-03-27)
Re: detecting ambiguous grammars genew@shuswap.net (2001-03-27)
Re: detecting ambiguous grammars genew@shuswap.net (2001-03-27)
Re: detecting ambiguous grammars thant@acm.org (Thant Tessman) (2001-03-31)
Re: detecting ambiguous grammars cfc@world.std.com (Chris F Clark) (2001-03-31)
Re: detecting ambiguous grammars kenarose@earthlink.net (Ken Rose) (2001-03-31)
Re: detecting ambiguous grammars vbdis@aol.com (2001-03-31)
Re: detecting ambiguous grammars joachim_d@gmx.de (Joachim Durchholz) (2001-04-04)
[2 later articles]
| List of all articles for this month |
From: genew@shuswap.net (Gene Wirchenko)
Newsgroups: comp.compilers
Date: 27 Mar 2001 23:45:16 -0500
Organization: Compilers Central
References: 01-02-080 01-03-020 01-03-032 01-03-078 01-03-084 01-03-102 01-03-119
Keywords: parse
Posted-Date: 27 Mar 2001 23:45:16 EST

Thant Tessman <thant@acm.org> wrote:


[snip]


>There is another option. In lex, if a string of letters matches more
>than one rule, the rule that occurs first in the rule section is
>chosen. A grammar specification could work the same way. Although
>ambiguities wouldn't be explicitly enumerated, it is always clear how
>to disambiguate.


          Another way of lexing is the way C does it. In general, C's
lexing goes for the longest token. Assuming the state is <looking for
a new token>, "/*" is one token "/*" not "/" + "*".


[snip]


Sincerely,


Gene Wirchenko

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