Pickling sounds like a great idea, if possible. Personally the table system works ok for my compiler as well. On Apr 27, 2012 9:46 PM, "David Beazley" <[email protected]> wrote:
> I agree that focusing on pickling might be a sensible way to go about it. > Specifically, make it so that the instance returned by lex() and yacc() > can be pickled as desired by the user. > > I'm not planning any changes along these lines for Ply-3.5, but will > consider it in future releases later. > > Cheers, > Dave > > > On Apr 27, 2012, at 4:49 AM, David Cournapeau wrote: > > > > > On Thu, Apr 26, 2012 at 7:27 PM, David Beazley <[email protected]> wrote: > > I've been thinking about some cleanup to PLY lately and have a question. > Would anyone actually miss the table output in PLY (parsetab.py, > lextab.py) if it were removed entirely? Here's some context: > > > > The original version of PLY was developed on a 200 MHZ home computer > about 12 years ago. At that time, generation of the LALR tables was > relatively expensive so creating table files was a way of caching the > result and reusing it (much like Python uses .pyc files). Today, it's a > bit different. For instance, making the LALR tables for the ANSI C > grammar (over 200 rules and nearly 350 states) on a modern machine only > takes around a half a second. Thus, I'm honestly wondering if I could > just ditch all of that table reading/writing code and not worry about it. > > > > Does anyone have any particular thoughts about this? > > > > I use ply to parse the package declaration in my packaging tool bento, > and the related command line tools would be significantly slower without > the ply caching. > > > > OTOH, the current caching solution is a bit difficult to use in those > situation: I think having a pickable object, and extracting the caching > policy away from the main code would cover most usecases in that context. > > > > David > > -- > You received this message because you are subscribed to the Google Groups > "ply-hack" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]. > For more options, visit this group at > http://groups.google.com/group/ply-hack?hl=en. > > -- You received this message because you are subscribed to the Google Groups "ply-hack" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/ply-hack?hl=en.
