On 1/22/13, David A. Wheeler <dwhee...@dwheeler.com> wrote: > Is the sweet-expression BNF done? > > I've posted an updated "sweet.g" file in the "develop" branch that looks > pretty good to me. It contains an executable BNF, as well as various > support definitions. ANTLR gives it a clean bill of health in LL(1) mode, > which I think is valuable because it gives us a nice rigorous check. > > A few points: > * Restart lists turn out to be really easy to spec and implement... it just > took a little while to get there :-). I strongly believe we should include > them, because they cleanly solve two use cases I'm concerned about (long > library definitions and short let variable statements), and they only > require a few lines to implement. In particular, the BNF requires only a > few lines, and the support routines don't require much more (in fact, in a > recursive descent parser the support routines are trivial). I realize > that's not an opinion universally held, but I hope that everyone else can > live with their inclusion (if you CAN'T let us know!). And if there's a > better way, let us know that too. > * But should the *name* "restart list" continue? Is "superlist" better? Or > something else? > * This recurses to t_expr if given just #!something on a line, as I posted > before. That should provide "least surprise". > * How should we handle FF/VT? I'm currently claiming that lines with only > FF/VT should be handled like ;-only lines, that is, completely ignored. > Thoughts? > > Any other thoughts? Anything else I've forgotten?
I'm not sure, but does it handle this? foo ! bar batz ; comment ! nitz koo Sincerely, AmkG ------------------------------------------------------------------------------ Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft MVPs and experts. ON SALE this month only -- learn more at: http://p.sf.net/sfu/learnnow-d2d _______________________________________________ Readable-discuss mailing list Readable-discuss@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/readable-discuss
