[antlr-interest] Re: how to eliminate non-determinism warnings upon keywords and literals?

[Lubos Vnuk]

Why not put semantic actions in the parser?

Or you could turn off the testLiterals option, call testLiteralsTable
() and check the return in the lexer rule manually.

HTH,
Lubos.

--- In antlr-interest at yahoogroups.com, "Fan Yang" <yhhf_dy at y...> 
wrote:
> Hi,
> 
> There are some non-determinism warnings for the following grammar
> 
> ////// snippit1
> class TestLexer extends Lexer;
> ...
> TOKEN_IFDEF	:	"ifdef" { semantic actions }
> 	;
> 
> ID	:	('a'..'z')+
> 	;
> //////
> 
> I know I can use token {...} section to eliminate those warnings, 
but 
> I can't add semantic actions in the tokens section, which is 
> important for me. 
> 
> My question is how to get rid of those warnings by using the same 
way 
> as snippit1 indicated.
> 
> 
> I really appreciate your help,
> 
> fan 
> 
> ////// snippit2
> // One solution but I can't use semantics action
> class TestLexer extends Lexer;
> ...
> tokens {
>         BEGIN="begin";
> }
> 
> ID	:	('a'..'z')+
> 	;



 
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