[antlr-interest] Nested Comments

mark.k.widdowson at jpmorgan.com mark.k.widdowson at jpmorgan.com
Thu May 29 05:59:51 PDT 2008


Thanks Gavin,

but ideally would want to be on hidden channel, and don't want to specify 
optional comments on every rule ?

does anyone know if this is possible in ANTLR, or is it a matter of coding 
a pre-processor to remove the nested comments ?

regards
Mark.




Gavin Lambert <antlr at mirality.co.nz> 
28/05/2008 09:57

To
mark.k.widdowson at jpmorgan.com, antlr-interest at antlr.org
cc

Subject
Re: [antlr-interest] Nested Comments






At 19:51 28/05/2008, mark.k.widdowson at jpmorgan.com wrote:
I've been developing a Sybase SQL stored proc parser using ANTLR3, and 
have run into the problem of dealing with nested comments 

e.g. 

/* 
select  * 
from hello  /* table*/ 
where 
field1 = 'world' /* field*/ 

*/ 

Ideally, I need to retain the line numbers whilst removing any nested 
comments, 

This is just air code, but:

MultiLineComment
  :  '/*'
     ( ('/*') => MultiLineComment
     | ~'*'
     | '*' ~'/'
     )*
     '*/'
  ;


Generally, this communication is for informational purposes only
and it is not intended as an offer or solicitation for the purchase
or sale of any financial instrument or as an official confirmation
of any transaction. In the event you are receiving the offering
materials attached below related to your interest in hedge funds or
private equity, this communication may be intended as an offer or
solicitation for the purchase or sale of such fund(s).  All market
prices, data and other information are not warranted as to
completeness or accuracy and are subject to change without notice.
Any comments or statements made herein do not necessarily reflect
those of JPMorgan Chase & Co., its subsidiaries and affiliates.

This transmission may contain information that is privileged,
confidential, legally privileged, and/or exempt from disclosure
under applicable law. If you are not the intended recipient, you
are hereby notified that any disclosure, copying, distribution, or
use of the information contained herein (including any reliance
thereon) is STRICTLY PROHIBITED. Although this transmission and any
attachments are believed to be free of any virus or other defect
that might affect any computer system into which it is received and
opened, it is the responsibility of the recipient to ensure that it
is virus free and no responsibility is accepted by JPMorgan Chase &
Co., its subsidiaries and affiliates, as applicable, for any loss
or damage arising in any way from its use. If you received this
transmission in error, please immediately contact the sender and
destroy the material in its entirety, whether in electronic or hard
copy format. Thank you.
Please refer to http://www.jpmorgan.com/pages/disclosures for
disclosures relating to UK legal entities.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://www.antlr.org/pipermail/antlr-interest/attachments/20080529/778fc580/attachment.html 


More information about the antlr-interest mailing list