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Re: Not getting parse error


From: Akim Demaille
Subject: Re: Not getting parse error
Date: 06 Feb 2002 13:01:08 +0100
User-agent: Gnus/5.0808 (Gnus v5.8.8) XEmacs/21.4 (Common Lisp)

| Hans,
| I'm very sorry that I did not supply what you asked for.  I didn't want to
| make your analysis more difficult.  I simply didn't know what you wanted,
| which is my problem not yours.  You obviously are very knowledgable about
| this, but I'm very much an amateur.
| 
| However, your suggestion fixed my problem:
| 
| >Also note that as the Bison generated parser reduces to the right, it is
| >better to write
| >FieldList:
| >     FieldList ',' FIELD {}
| >     | FIELD {}
| >as the parse stack then does not built up. See the Bison manual for more
| >about this.
| 
| This change causes the failure to show up as I would expect.  Again, the
| failure is expected when my pseudo-SQL does not conform to the
| specification.  My reference to an error has nothing to do with Bison or
| how it works.  I'm very pleased with Bison and it is a wonderful tool.
| 
| Please accept my apology for not being clear, please continue to offer help
| to the less experienced, and know that I am grateful to you and Akim for
| helping me.

I still feel frustrated, because you still have not explained what has
changed for you.



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