[antlr-interest] Re: "protected" lexer rules

[Terence Parr]

On Nov 8, 2004, at 12:51 PM, Tim Simpson wrote:
> Currently I'm toying around with antlr, trying to learn the
> in's and out's. It is a very useful tool. I was thinking about
> this sub/protected rules, and it kind of reminds me of some
> stuff from functional programming.
>
> So what about
>
> INT : (DIGIT)+
> where {DIGIT : '0'..'9';};
>
> Of course this would only make the definition of DIGIT local to INT.

Hi Tim,

The only problem is that DIGIT is useful for a bunch of rules. :)

Ter
--
CS Professor & Grad Director, University of San Francisco
Creator, ANTLR Parser Generator, http://www.antlr.org
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