[uug] large file parser (perl?)

[Lars Olson]

Anyone know of a tool to parse a large file according to a BNF 
definition?  I've looked at Parse::RecDescent from CPAN, but it requires 
you to load the entire file into a string first.  Too slow and too much 
memory for my purposes.

(I know there's lex and yacc, but I don't know them very well and it's a 
fairly simple grammar that I could probably just code up from scratch 
just as well.)

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