I've been using the beta v3 of ANTLR to great effect for generating
language parsers, but there may already be a grammar in there that you
can use:
www.antlr.org
Mark
On 1/17/07, Richard Kroll <[EMAIL PROTECTED]> wrote:
> I am currently creating a wiki style parsing engine for the lack of a
> better description. To date I have all the HTML elements parsing that I
> need, but one of the requirements that I have is to allow the end user
> to input variables from our system (kind of a merge field) and allow
> them to perform math operations on them. I was hoping that someone
> might know of an existing CF math parsing engine / code that I might be
> able to get a foothold on how to accomplish this.
>
> Anyone know of an existing open source library?
>
> The current requirement is to allow for basic arithmetic but including
> nesting parenthesis for more complex equations. I have some ideas for
> the basic math, but when getting into nesting equations is where I get a
> little fuzzy.
>
> This is what I am trying to achieve in wiki markup:
>
> [b]Welcome[/b]
> [p]
> Product Commission is
> [math]({product_price}-{product_credits})*{commission_rate}[/math]
> [/p]
>
> Using my existing code I can get it to generate the correct [math] like:
>
> (100000-500)*.15
>
> I thought of simply tossing an eval() around this, but it seems like a
> major hack and does not allow for more complex equations that might come
> up later.
>
> Anyone have any ideas?
>
> Rich Kroll
>
> Senior Technical Lead
>
> SITE Manageware, Inc.
> 2841 West Cypress Creek Road
> Fort Lauderdale, Florida 33309
> 954-944-9020 EXT. 716
> 954-272-8916 Fax
>
>
>
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