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From Glen Stampoultzis <gst...@iprimus.com.au>
Subject Re: More formulotic thought
Date Thu, 20 Feb 2003 02:38:34 GMT
Funny you should mention this.  I'm working on a little open source project 
at the moment that is using antlr.  Works great and is well documented.  I 
didn't find coming up with a grammer hard at all.  This is a big boys 
parser though.  There is a learning curve involved.  I'm using it in a 
simpler mode just to build an AST.  When you get to tree walkers I start 
getting a little more confused.

One really cool thing I like about it is that the code is generates is 
actually pretty easy to read.  Quite close to what you might write if you 
were going it by hand.



At 02:41 PM 19/02/2003 -0500, you wrote:
>Hi All especially Avik,
>Have you seen this: (http://www.jguru.com/faq/view.jsp?EID=78)?  At one 
>time we
>were thinking about doing the formula parser with a tool like this, but 
>never did because
>they all had crummy licenses which required the user to do things that we 
>thought they ought not
>have to do.  This sucker is in the public domain under a "do whatever the 
>hell you want" license.
>Downside: Debugability will be lower, writing the grammer will be a bitch
>Upside: We might actually finish formulas this year ;-)
>Take a read of that..   I'm not exactly sure that it can or can't go the 
>other direction (Binary->Text)

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