EOQualifier?

On Oct 5, 2010, at 12:03 AM, Kieran Kelleher wrote:

> Rather than reinvent the wheel, I am trying to find a real simple library or 
> java class that will just do boolean expression only parsing and allow me to 
> evaluate the value of the symbols to true or false (via callback or sth like 
> that)
> 
> For example and expression might look like this:
> 
>       "(canViewFood && canEatFood) || (canBuyFood && !canCookFood)"
> 
> I want a lib or java class that will walk the expression, calling my method 
> to evaluate whether each symbol (canViewFood, canEatFood, etc.) is true or 
> false which logically would turn the expression into something like this:
> 
>       "(true && true) || (false && !true)"
> 
> 
> and then evaluate the entire expression to be true or false.
> 
> Possible candidates:
>       https://javacc.dev.java.net/
>       http://sourceforge.net/projects/jep/
> 
> Anyone have experience with this kind of application requirement and would 
> share opinions and/or experiences?
> 
> Regards, Kieran
> 
> 
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