Re: Boolean expression parser
Re: Boolean expression parser
- Subject: Re: Boolean expression parser
- From: Mike Schrag <email@hidden>
- Date: Tue, 5 Oct 2010 00:09:08 -0400
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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