Re: [Pyparsing] Java grammar

[Paul M. <pt...@au...>]

Sorry Mark, I know of no one who has tackled a full Java grammar in
pyparsing.  Here is one link to a Java BNF:
http://www.daimi.au.dk/dRegAut/JavaBNF.html - having done the Verilog
grammar, this looks like a comparable task.  It took me about 8 weeks to do
Verilog.

If you do take this on, or a subset (or start a little Google Code project
for it), one recommendation I would make would be to use a Regex for some of
the complex low-level tokens, like all the numeric literals.  Building them
up with Word, Optional, etc. will run waaay too slow, and using a Regex is a
reasonable compromise.

-- Paul


> -----Original Message-----
> From: Mark Lawrence [mailto:bre...@ya...]
> Sent: Thursday, March 04, 2010 9:55 AM
> To: pyp...@li...
> Subject: [Pyparsing] Java grammar
> 
> Hi all,
> 
> Just assume that there is some purely hypothetical raving lunatic who
> thinks it is a good idea to use pyparsing to convert Java source code into
> the far purer Python.  Rather than reinvent wheels this PHRL hopes to
> reuse an existing pyparsing Java grammar for the job.  Does anybody know
> of such a beast?
> 
> Should said beast not exist, would it be possible to grab an existing
> grammar from the web and convert it using ebnf.py?  If no it would not
> surprise this PHRL as surely the entire concept is simply far to good to
> be true.  If yes, yee hah!!!, but how the hell does this PHRL go about
> this task?
> 
> Any and all responses gratefully received.
> 
> Mark Lawrence.
> 
> 
> 
> 
> --------------------------------------------------------------------------
> ----
> Download Intel® Parallel Studio Eval
> Try the new software tools for yourself. Speed compiling, find bugs
> proactively, and fine-tune applications for parallel performance.
> See why Intel Parallel Studio got high marks during beta.
> http://p.sf.net/sfu/intel-sw-dev
> _______________________________________________
> Pyparsing-users mailing list
> Pyp...@li...
> https://lists.sourceforge.net/lists/listinfo/pyparsing-users