There isn't a simple way to do that using the exported stuff currently but those nonterminals are hiding inside and one could expose them in the pattern language I think. (TT is accessible via (cross t) I think.) definitely requires fiddling with intervals but the work would be more exposing and documenting and the like, not really deep changes.
But there may be a clever way to make it work with the existing APIs? I am not sure. Robby On Fri, May 3, 2019 at 8:38 PM William J. Bowman <w...@williamjbowman.com> wrote: > Ah, I see. > Those are the VT and TT I want, but then I also want to define: > > (C ::= VT TT) > > and take the context-closure of C. > (see attached) > > Can I get my hands on the generated VT and TT easily, or would I need to > tweak > Redex internals to automate this? > > -- > William J. Bowman > > On Fri, May 03, 2019 at 07:52:09PM -0500, Robby Findler wrote: > > (thunk TT) isn't a TT, tho? It will reduce only in a TT. > > > > Robby > > > > On Fri, May 3, 2019 at 7:16 PM William J. Bowman <w...@williamjbowman.com> > wrote: > > > > > > That looks like the contexts I want, but it doesn't seem to reduce > under a (thunk TT) in my example model. > > > > > > -- > > > Sent from my phoneamajig > > > > > > > On May 3, 2019, at 20:02, Robby Findler <ro...@cs.northwestern.edu> > wrote: > > > > > > > > Redex, when asked to create the compatible closure, creates a context > > > > and then uses that. In this case, it will create a context something > > > > like this: > > > > > > > > TT ::= hole | (\ (x) TT) | (TT v) | (t VT) | (force VT) | (return VT) > > > > VT ::= (thunk TT) > > > > > > > > If you want something else (I'm not sure of an algorithm to handle > > > > this kind of thing without coming with something like that), it might > > > > be simplest to write out the contexts that you want directly and use > > > > context-closure. > > > > > > > > Robby > > > > > > > >> On Fri, May 3, 2019 at 6:42 PM William J. Bowman < > w...@williamjbowman.com> wrote: > > > >> > > > >> Hello all, > > > >> > > > >> I'm trying to define a model in Redex where values and terms are > separate > > > >> nonterminals, and then define a reduction relation using > `compatible-closure` > > > >> to lift the small steps to the, well, compatible closure. > > > >> Unfortunately, it doesn't do what I expect, presumably because the > nonterminals > > > >> for values and terms are mutually defined, but `compatible-closure` > takes > > > >> exactly one nonterminal. > > > >> > > > >> Is there a way to do what I want? > > > >> See attached. > > > >> > > > >> -- > > > >> William J. Bowman > > > >> > > > >> -- > > > >> You received this message because you are subscribed to the Google > Groups "Racket Users" group. > > > >> To unsubscribe from this group and stop receiving emails from it, > send an email to racket-users+unsubscr...@googlegroups.com. > > > >> For more options, visit https://groups.google.com/d/optout. > > > > > > -- > > > You received this message because you are subscribed to the Google > Groups "Racket Users" group. > > > To unsubscribe from this group and stop receiving emails from it, send > an email to racket-users+unsubscr...@googlegroups.com. > > > For more options, visit https://groups.google.com/d/optout. > > > > -- > > You received this message because you are subscribed to the Google > Groups "Racket Users" group. > > To unsubscribe from this group and stop receiving emails from it, send > an email to racket-users+unsubscr...@googlegroups.com. > > For more options, visit https://groups.google.com/d/optout. > > -- > You received this message because you are subscribed to the Google Groups > "Racket Users" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to racket-users+unsubscr...@googlegroups.com. > For more options, visit https://groups.google.com/d/optout. > -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
