Hi, I'm trying to fix a JJTree parser but am I little confused as to
the source of the problem.
First: the parser tries to parse SMARTS, which are query patterns for
molecular substructure matching.
Given a string: Sc1ccccc1
the parser should recognize S and c as two separate atom (tokens). The
problem is that Sc is also a valid token - but the specification says
that it must be enclosed in [ and ] - which is not the case here.
As a result, the parser only sees the S and c as Sc and then reports
the pattern as invalid.
So I'm trying to work out how to make the parser recognize the Sc as
two separate tokens - S & c.
(I have probably not given enough information but I've tried to keep
the description simple and generic. The entire parser code is
available at
http://cdk.git.sourceforge.net/git/gitweb.cgi?p=cdk;a=blob_plain;f=src/main/org/openscience/cdk/smiles/smarts/parser/SMARTSParser.jjt;hb=master)
Any pointers would be approciated
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Rajarshi Guha <
rguha@...>
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