[antlr-interest] Re: help with literals

[yahamkon]

Thanks for the fast response!

>> See docs on literals and any example grammar with an ID rule.

I've looked in the docs, the "java.g" grammar, also searched the 
archives but things aren't getting clearer.

> Yes, you need a rule that will test it's result against the defined
> literals. 

Isn't "calc" such a rule? To put it defferently, if I had a grammar 
that specifies a single rule recognising a single literal how would 
that look like (that's what I had in mind sending the example anyway)?





> 
> Monty
> 
> -----Original Message-----
> From: VLADIMIR KONSTANTINOV [mailto:Vladimir.Konstantinov at r...] 
> Sent: Thursday, November 13, 2003 11:03 AM
> To: antlr-interest at yahoogroups.com
> Subject: [antlr-interest] help with literals
> 
> 
> I want to specify literals ("min", "max", "sum" etc) in my grammar.
>  
> I am getting :
>  line 1:1: unexpected char: 'm'
>  line 1:2: unexpected char: 'i'
>  line 1:3: unexpected char: 'n'
> when testing with the following expression: "min;" 
>  
> This a stripped down version of my grammar:
>  
> ///
> class ExpressionParser extends Parser;
> options { importVocab=Expression; }
> calc: fun END;
> fun: "min";
>  
> class ExpressionLexer extends Lexer ;
> options{ exportVocab=Expression;}
> END: ';'
> ///
>  
> I am missing something very basic, but can't figure it out myself.
>  
> Thanks in advance.
> 
> 
>  
> 
> Your use of Yahoo! Groups is subject to 
http://docs.yahoo.com/info/terms/


 

Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/