[antlr-interest] lexer rule precedence

[Jim Idle]

List it before IDENTIFIER as you have written it here and add a ERR : . ;
as the last rule to catch non-matches and issue an error.

Jim

> -----Original Message-----
> From: antlr-interest-bounces at antlr.org [mailto:antlr-interest-
> bounces at antlr.org] On Behalf Of Ryan Brown
> Sent: Friday, March 18, 2011 8:15 PM
> To: antlr-interest at antlr.org
> Subject: [antlr-interest] lexer rule precedence
>
> I have a lexer with rules like this:
>
> TRUE : 'true';
> IDENTIFIER : 'a'..'z'+;
>
> The text "true" parses as IDENTIFIER.  How do I get it to parse as
> TRUE? Do I need to add not and all my keywords to the IDENTIFIER rule?
> I don't see anything like that in the java grammar.
>
> -- Ryan Brown
>
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