While this is not helping you directly, you might want to learn about Lexing and Parsing. I found this on http://www.perl.com/pub/2012/10/an-overview-of-lexing-and-parsing.html which also might be worth reading.

s$$([},&%#}/&/]+}%&{})*;#$&&s&&$^X.($'^"%]=\&(|?*{%
+.+=%;.#_}\&"^"-+%*).}%:##%}={~=~:.")&e&&s""`$''`"e

In reply to Re: Need a start point for resolving {[()]} by Skeeve
in thread Need a start point for resolving {[()]} by exilepanda

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