On 10/15/07, Wincent Colaiuta <[EMAIL PROTECTED]> wrote: > El 15/10/2007, a las 14:21, "Pat Maddox" <[EMAIL PROTECTED]> escribió: > > > On 10/14/07, David Chelimsky <[EMAIL PROTECTED]> wrote: > >> On 10/14/07, Pat Maddox <[EMAIL PROTECTED]> wrote: > >>> Actually a parser for this would be quite simple > >> > >> Dead simple. It would also allow us to do away with methods like > >> Given, When and Then, which some people have objected to (because of > >> the capitalization), because the stories are no longer expressed > >> directly in Ruby. Internally, the parser could use a StepFactory > >> to do > >> things like create_given, create_when, etc (or however we decide to > >> name these). > > > > Jay mentioned antlr. This parser is so simple though that I doubt we > > would need/want that. There's not really any parsing at all in fact. > > You just look at each line, figure out what token it is, and pass the > > following string to a constructor. It should be like 60 lines of Ruby > > code, and we don't have any external dependencies. > > I've done a couple of month's work with ANTLR (3.0) this year and > based on my experiences I'd say it's not the right tool for this kind > of job. You use ANTLR if: > > 1. Parsing speed is really important. > 2. You need to recognize a relatively complex grammar (most likely a > context-sensitive language). > 3. You don't mind being tied to Java tool-chain
Not a chance in this case. Cheers, David > (even though your > output target language is non-Java, the ANTLR tool itself is Java). > 4. You have lots of time on your hands to develop, debug and fine- > tune the delicate and complex machinery that is an ANTLR-generated > recognizer. > > In short, I found ANTLR fiendishly difficult to use, so for a simple > task like this, especially one where parsing is *not* going to be a > bottleneck, the simplest possible solution (parsing with hand-written > Ruby) is going to be the best one. > > Cheers, > Wincent > > _______________________________________________ > rspec-users mailing list > rspec-users@rubyforge.org > http://rubyforge.org/mailman/listinfo/rspec-users > _______________________________________________ rspec-users mailing list rspec-users@rubyforge.org http://rubyforge.org/mailman/listinfo/rspec-users
