[antlr-interest] "unexpected token" error

[Monty Zukowski]

togol machillan wrote:
> Hi,
> 
> Another newbie question. I hope somebody can help me out here.
> 
> I have the following lexer rules (omitting some which are clear by name)
> 
> VALUE  options {testLiterals = true; }
>        : CAPITAL_LETTER (CAPITAL_LETTER|DIGIT|','|'-')*
>        ;
> 
> FIGURE: ('-')? ((DIGIT)+ '.' (DIGIT)* | '.'(DIGIT)+ );
> 
> ASSIGNMENT: VALUE '=' (VALUE|FIGURE)
>           ;
> 
> I want the ASSIGNMENT rule to match a token like MOLE-FRAC=1.0 or STOIC=IN, for example. But when I include this rule, the program throws the unexpected token: error at the point where first space character occurs in the input file. Is this due to some problem with the greedy nature of the the VALUE rule? 
> 
> Thanks in advance.
> 
> Regards,
> 
> Togol Mach  

What does your whitespace rule look like?

Monty