[antlr-interest] How the get the token value of 'ONEOF'

[Jared Bunting]

Not that I'm aware of.  However, I have found that having all of my 
tokens in one place has been very helpful for debugging and refactoring, 
as well as simply presenting a clear picture of the grammar.

-Jared

chain one wrote:
> Hi Jared Bunting:
>
> Thanks for your quick response.
> Your suggestion must work. But there are so many tokens just like 
> 'ONEOF' in my grammar right now, to explicitly  define all of this 
> kind of tokens is quiet a bit boring.
> I am wondering if there is another way to do this? If not, I will 
> define them : )
>  
>
> 2008/12/2 Jared Bunting <jared.bunting at peachjean.com 
> <mailto:jared.bunting at peachjean.com>>
>
>     I can't see your grammar, but I believe that the "T__N" tokens are
>     generated when you define lexical tokens directly in your parser
>     rules.  So basically, define it explicitly in the tokens section
>     rather than in a parser rule.  Then, it will have a name.
>     -Jared
>
>     chain one wrote:
>
>         Hello:
>         I have a question about the token value, the question is :
>          In the generated Java file, the token values are defined in
>         this way:
>
>          public static final String[] tokenNames = new String[] {
>                "<invalid>", "<EOR>", "<DOWN>",
>         "<UP>","ENTITY_VAR_IDENT", "RULE_ID","INTERVAL_ITEM","'ONEOF'"
>            };
>            public static final int ENTITY_VAR_IDENT=4;
>            public static final int RULE_ID=5;
>            public static final int INTERVAL_ITEM=6;
>            public static final int T__7=7;
>
>
>
>         if I want to identify a token , I can type this:
>
>         Grammar:
>         { input.LA(1)== ENTITY_VAR_IDENT}?
>
>         Generated Code:
>         int LA1_0 = input.LA(1);
>         if ( (LA1_0==ENTITY_VAR_IDENT) )
>         {
>           alt1=1;
>         }
>
>
>         that is OK
>
>         But what if I want to check if the token is 'ONEOF'?
>         How could I know T__7 stands for 'ONEOF' and its value is 7?
>
>         Thanks for your help!
>         Best Regards,
>         chainone
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