3 Aug
2010
3 Aug
'10
2:39 p.m.
On 8/3/10 2:14 PM, Lukas Renggli wrote:
Hi Alberto,
This is great news. Maybe you also want to post the repository URL? :-)
Sure, please don't be too much horrified by the quality of the code:
http://www.squeaksource.com/PetitJava.html
For what you noticed on bogus grammar specifications
check out the
work of Vadim Zaytsev (http://mobile.twitter.com/grammarware). Among
others he analized various Java Language Specifications.
That's interesting, thank you!
Note that cycles are present in most grammars and
perfecly fine. The
only problematic cycles are the left-recursive ones for recursive
descent parsers like ANTLR or PetitParser. Even then you can simply
fix the problem by adding a memoizer into the offending cycle, but
that yields a very slow grammar. You can find offending cycles with
the message #cycleSets from the PetitAnalyzer package.
I tried using the "cycle" tab in the PetitParser GUI, which -I think-
does the same thing. Knowing how to call it programmatically is even
better ;)
Alberto
3 Aug
3 Aug
2:49 p.m.
New subject: PPCompositeParser>>initializeStartingAt:
this is really nice to have a full java parser for moose... even if the problem after will
be a
semantics analysis.
Stef
On Aug 3, 2010, at 2:39 PM, Alberto Bacchelli wrote:
On 8/3/10 2:14 PM, Lukas Renggli wrote:
Hi Alberto,
This is great news. Maybe you also want to post the repository URL? :-)
Sure, please don't be too much horrified by the quality of the code:
http://www.squeaksource.com/PetitJava.html
For what you noticed on bogus grammar
specifications check out the
work of Vadim Zaytsev (http://mobile.twitter.com/grammarware). Among
others he analized various Java Language Specifications.
That's interesting, thank you!
Note that cycles are present in most grammars and
perfecly fine. The
only problematic cycles are the left-recursive ones for recursive
descent parsers like ANTLR or PetitParser. Even then you can simply
fix the problem by adding a memoizer into the offending cycle, but
that yields a very slow grammar. You can find offending cycles with
the message #cycleSets from the PetitAnalyzer package.
I tried using the "cycle" tab in the PetitParser GUI, which -I think-
does the same thing. Knowing how to call it programmatically is even
better ;)
Alberto
_______________________________________________
Moose-dev mailing list
Moose-dev(a)iam.unibe.ch
https://www.iam.unibe.ch/mailman/listinfo/moose-dev 
2:56 p.m.
New subject: PPCompositeParser>>initializeStartingAt:
It's great indeed. At the very least we will be able to have color
highlighting and parsers for various pattern matching.
Cheers,
Doru
On 3 Aug 2010, at 14:49, Stéphane Ducasse wrote:
this is really nice to have a full java parser for
moose... even if
the problem after will be a
semantics analysis.
Stef
On Aug 3, 2010, at 2:39 PM, Alberto Bacchelli wrote:
--
www.tudorgirba.com
"Relationships are of two kinds: those we choose and those that
happen. They both matter."
On 8/3/10 2:14 PM, Lukas Renggli wrote:
_______________________________________________
Moose-dev mailing list
Moose-dev(a)iam.unibe.ch
https://www.iam.unibe.ch/mailman/listinfo/moose-dev Hi Alberto,
This is great news. Maybe you also want to post the repository
URL? :-)
Sure, please don't be too much horrified by the quality of the code:
http://www.squeaksource.com/PetitJava.html
For what you noticed on bogus grammar
specifications check out the
work of Vadim Zaytsev (http://mobile.twitter.com/grammarware). Among
others he analized various Java Language Specifications.
That's interesting, thank you!
Note that cycles are present in most grammars and
perfecly fine. The
only problematic cycles are the left-recursive ones for recursive
descent parsers like ANTLR or PetitParser. Even then you can simply
fix the problem by adding a memoizer into the offending cycle, but
that yields a very slow grammar. You can find offending cycles with
the message #cycleSets from the PetitAnalyzer package.
I tried using the "cycle" tab in the PetitParser GUI, which -I think-
does the same thing. Knowing how to call it programmatically is even
better ;)
Alberto
_______________________________________________
Moose-dev mailing list
Moose-dev(a)iam.unibe.ch
https://www.iam.unibe.ch/mailman/listinfo/moose-dev
5009
days inactive
5009
days old
2 comments
3 participants
participants (3)
-
Alberto Bacchelli -
Stéphane Ducasse -
Tudor Girba