[antlr-interest] Actions in predicates

[Jim Idle]

It's not completely flawed. To do what you asked, you do not need to influence the lexer, just look ahead in the off-channel at certain points and change the channel of the SEMI back to the default if you wanted it to appear; but as I said, that is an awkward way to do it I think.

Jim

> -----Original Message-----
> From: antlr-interest-bounces at antlr.org [mailto:antlr-interest-
> bounces at antlr.org] On Behalf Of Marcin Rzeznicki
> Sent: Monday, February 22, 2010 9:12 AM
> To: shmuel siegel
> Cc: antlr-interest at antlr.org
> Subject: Re: [antlr-interest] Actions in predicates
> 
> On Mon, Feb 22, 2010 at 6:05 PM, shmuel siegel
> <antlr at shmuelhome.mine.nu>wrote:
> 
> > On 2/22/2010 6:56 PM, Marcin Rzeźnicki wrote:
> > > During predicate used to disambiguate call subrule I'd need to fire
> > action
> > > which sets appropriate flag in my lexer ordering it to emit
> semicolons to
> > > the main channel.
> > >
> > Have things changed so that the parser can affect the lexer? I
> thought
> > that the lexer does all of its parsing before the parser sees any
> tokens.
> >
> >
> >
> 
> You may be right, ooops. Then my solution is completely flawed. I'll
> better
> check ANTLR's source code :-)
> 
> 
> 
> --
> Greetings
> Marcin Rzeźnicki
> 
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