[antlr-interest] LT(0)

Terence Parr parrt at jguru.com
Thu Apr 3 14:53:20 PST 2003


On Thursday, April 3, 2003, at 02:47  PM, mwwickline wrote:

> I can't find anything in the documentation that explicitly states
> whether you can do "LT(0)" and where it's allowed.  I'm getting a core

LT(0) is meaningless, I'm afraid.  First symbol of lookahead is LT(1) :)

Terence

> dump in the antlr code when I do "LT(0)->getText()" in my tree parser,
> but it doesn't do it for every call to LT(0).
> I'm using an older development version, which may be my problem, but
> I'd still like to know whether LT(0) is allowed, and where it's
> supposed to be a valid call.
>
> Any help on this would be much appreciated!
>
> Thanks,
>
> Martin
>
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