[antlr-interest] Can't recoginze a file start with HIDDENlexersince 3.1b1

[Ronghui Yu]

Yes, this is really a great challenge for me, but I'll try my best to figure 
it out.
Thank you very much.

==============================
Regards,
Ronghui Yu
Sierra Atlantic
----- Original Message ----- 
From: "Kay Röpke" <kroepke at classdump.org>
To: "Ronghui Yu" <Ronghui.Yu at sierraatlantic.com>
Cc: "ANTLR-Interest Interest" <antlr-interest at antlr.org>
Sent: Sunday, August 31, 2008 3:30 AM
Subject: Re: [antlr-interest] Can't recoginze a file start with 
HIDDENlexersince 3.1b1



On Aug 30, 2008, at 3:21 AM, Ronghui Yu wrote:

> I tried L-factoring and syntax predicate, but I couldn't remove all 
> errors yet. One of the parsers has almost 1000 rules, does it reach  ANTLR 
> limit?

No, there's not a limit like that. The only problems I've had are
codesize issues with Java, but that doesn't have anything to do with
backtracking, anyway.

> Anyway, I think I need to follow the method to deal with rules one  by 
> one.


Either the language is highly ambiguous or you have a mistake in your
grammar. SQL is not particularly nice as a language to parse...lots of
room for mistakes :(
Try to understand where it starts becoming ambiguous and you'll
eventually find it. Takes time and practice though.

cheers,
-k
-- 
Kay Röpke
http://classdump.org/








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