Hi, PPExpressionParser is not meant to be subclassed. Read the class comment to see how to use it.
PPCompositeParser is meant to be subclassed and it offers a neat mapping between methods and variables to support caching of parsers. Take a look at the subclasses in the Moose image: http://www.moosetechnology.org/download/5.0 If you are at it, in the Moose image, you also get a dedicated browser (World menu / Moose / PetitParser browser) for manipulating subclasses of PPCompositeParser. Cheers, Doru On Tue, Nov 5, 2013 at 10:11 PM, Sean P. DeNigris <s...@clipperadams.com>wrote: > After reading the PetitParser chapter, I'm not clear when one would > subclass > PPCompositeParser vs. using PPExpressionParser. What are the tradeoffs / > use > cases? Also, can the book be improved or is that the final version? Thanks. > > > > ----- > Cheers, > Sean > -- > View this message in context: > http://forum.world.st/Deep-Into-Pharo-PPExpressionParser-tp4719454.html > Sent from the Pharo Smalltalk Developers mailing list archive at > Nabble.com. > > -- www.tudorgirba.com "Every thing has its own flow"
