The best approach IMHO is not to reinvent the wheel. As CCL is a standard, (ANSI/NISO Z39.58-1992), it is hard to believe that code is not already available somewhere.
That said, the many implementations in library catalogs for example, are commercially sensitive and you may well have to roll your own.
On the positive side, much of the work has been done for you, given that you have the grammar. I would check out Damian Conway's module Parse::RecDescent. The following are useful starting sources:
Data Munging with Perl by davorg - I found this treatment of Parse::RecDescent particularly easy to digest
The FAQ
Damian Conway's TPJ article
Best of luck,
perlcgi

---

---

• Are you posting in the right place? Check out Where do I post X? to know for sure.
• Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:

  <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>

• Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
• Want more info? How to link or How to display code and escape characters are good places to start.