You can also mix PEG (Packrat) with Pratt in an interesting way. Nemerle does this, as well as https://github.com/combinatorylogic/mbase https://github.com/comb

You can also mix PEG (Packrat) with Pratt in an interesting way. Nemerle does this, as well as https://github.com/combinatorylogic/mbase https://github.com/combinatorylogic/mbase And you can do a lot of nice stuff with PEGs, like generating error recovery and sane error messages (thins thought to only be available for handwritten recursive descent), you can auto-generate pretty-printers, formatters, syntax highlighters, etc.