[antlr-interest] grammars without any rules
Terence Parr
parrt at jguru.com
Fri Oct 12 10:59:19 PDT 2001
On Friday, October 12, 2001, at 03:39 AM, N.V.S. Karunakar wrote:
> Hi,
>
> ANTLR doesn't allow a grammar definition without a rule. Consider
> this
> case - We define a lexer for a language K. In the next version of K
> which is
> NextK, all we do is to add a few keywords and add some syntactic
> constructs.
> We will use grammar inheritance to add more rules to the parser. to add
> extra key words we inherit from the K's lexer. we can add the new key
> words
> to the tokens section of this new lexer. there is no need to add any new
> lexer rules. but ANTLR insists on a rule. in this light can we allow
> grammars without any rules ?
Howdy. Can you just add a dummy rule?
Ter
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