libparser-mgc-perl binary package in Ubuntu Focal i386

 Parser::MGC provides a low-level framework for building
 recursive-descent parsers that consume a given input string from left
 to right, returning a parse structure. It takes its name from the
 `m//gc' regexps used to implement the token parsing behaviour.
 .
 It provides a number of token-parsing methods, which each extract a
 grammatical token from the string. It also provides wrapping methods
 that can be used to build up a possibly-recursive grammar structure, by
 applying a structure around other parts of parsing code.

Source package