On 6/2/10 5:38 PM, "John B. Brodie" <[email protected]> wrote:
> On Wed, 2010-06-02 at 17:03 -0500, Ken Williams wrote:
>> Yeah, probably I should be using parser rules. I was trying to keep things
>> "simple" by making everything a linear stream of tokens from the point of
>> view of the Java caller, while still having high-level constructs like DATE.
>
> just be aware that when you make date a parser rule WS will be silently
> accepted between the DIGITS and SLASHes comprising the date
> non-terminal.
Yeah, good point. In this case that's fine. It would be nice, though, if
there were a per-rule parser directive to control which channel(s) to pay
attention to, something like this:
date
options {channel=ALL;}
: DIGITS SLASH DIGITS SLASH DIGITS ;
Not sure whether that's feasible or not though.
--
Ken Williams
Sr. Research Scientist
Thomson Reuters
Phone: 651-848-7712
[email protected]
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