Remember antlr.markmail.org. The simplest way to deal with this is to add a newline to your input before parsimg it.
Jim On Jun 1, 2010, at 6:33, Nathan Eloe <[email protected]> wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > Hello all, > I'm working on an AST parser for the Bash language and I've come > across the following strange behavior: > I'm trying to handle comments, so I used the comments token you can > get when you start a new grammar in ANTLRworks. It works. > > COMMENT > : '#' ~('\n'|'\r')* '\r'? '\n' {$channel=HIDDEN;} > ; > > The problem arises when the comment is the last thing from the input > (i.e, no new line before EOF). Removing the '\n' from the token > causes it to freak out when I run the tests, but I can't get it to > match comments at the end of file. Leaving that '\n' in lets the > code compile, but I still can't match that last case. > > Here's where the interesting part happens. When I run it through > the debugger with the same test case that I use in gunit, the > debugger allows the input and parses it correctly (meaning, it > ignores it as it should) and correctly generates the expected AST. > > Does the debugger allow the code to be more robust in its decision > making abilities? Or does it do something to the input to allow it > to be matched to a token. > > Thanks for the help! > > Nathan > -----BEGIN PGP SIGNATURE----- > Version: GnuPG/MacGPG2 v2.0.14 (Darwin) > > iEYEARECAAYFAkwFDBsACgkQFpoRlVgtqKZHIgCfRWHiKc6fr51t7tHT1xtxlVYG > s9sAmwak2ZHv3XPVPeMgwYNDbqhXJztq > =2bxk > -----END PGP SIGNATURE----- > > List: http://www.antlr.org/mailman/listinfo/antlr-interest > Unsubscribe: > http://www.antlr.org/mailman/options/antlr-interest/your-email-address List: http://www.antlr.org/mailman/listinfo/antlr-interest Unsubscribe: http://www.antlr.org/mailman/options/antlr-interest/your-email-address -- You received this message because you are subscribed to the Google Groups "il-antlr-interest" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/il-antlr-interest?hl=en.
