<div dir="ltr">Silly me, I was trying (require syntax/parse). Thanks! </div><div class="gmail_extra"> <div class="gmail_quote">On Tue, Jun 17, 2014 at 1:26 PM, Stephen Chang <<a href="mailto:stchang@ccs.neu.edu" target="_blank">stchang@ccs.neu.edu</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hmm, you might need to provide some more details about what you are trying to define then? (This particular example seems to work with syntax-parse in TR) #lang typed/racket (require (for-syntax syntax/parse)) (define-syntax (test stx) (syntax-parse stx #:datum-literals (in def) <div class=""> [(_ name (def a ...) ... (in clause do ...) ...) </div> #'(list a ... ... do ... ...)])) <div class="im HOEnZb"> (test A (def 1 2 3) (in 4 5 6)) </div><div class="HOEnZb"><div class="h5">On Tue, Jun 17, 2014 at 2:08 PM, Spencer Florence <<a href="mailto:spencer@florence.io">spencer@florence.io</a>> wrote: > Unfortunately I'm working in typed racket, which (as far as I can tell) > doesn't play nice with syntax-parse. Any other ideas? > > > On Tue, Jun 17, 2014 at 1:04 PM, Jens Axel Søgaard <<a href="mailto:jensaxel@soegaard.net">jensaxel@soegaard.net</a>> > wrote: >> >> Hi Spencer, >> >> The problem is that syntax-case pattern doesn't allow allow >> pattern of the form (x ... y ...) that is with two ellipsis on the >> same level. >> >> Luckily syntax-parse allow these: >> >> (require syntax/parse) >> >> (syntax-parse #'(a a a a 41 42 43) >> [(c ... d ...) >> #''((c ...) (d ...))]) >> >> (syntax-parse #'(a a a a 41 42 43) >> [(c:id ... d ...) >> #''((c ...) (d ...))]) >> >> >> /Jens Axel >> >> >> >> >> 2014-06-17 19:46 GMT+02:00 Spencer Florence <<a href="mailto:florence@northwestern.edu">florence@northwestern.edu</a>>: >> > Hey all, >> > >> > I'm trying to write a macro with syntax-case that looks something like >> > this: >> > >> > (syntax-case stx (in def) >> > [(_ name >> > (def a ...) ... >> > (in clause do ...) ...) >> > stuff]) >> > >> > But, this gives me the error "syntax-case: misplaced ellipsis in pattern >> > (follows other ellipsis)" on the last ellipsis. Does anyone know a way >> > around this? >> > >> > --spencer >> > >> > ____________________ >> > Racket Users list: >> > <a href="http://lists.racket-lang.org/users" target="_blank">http://lists.racket-lang.org/users</a> >> > >> >> >> >> -- >> -- >> Jens Axel Søgaard >> >> ____________________ >> Racket Users list: >> <a href="http://lists.racket-lang.org/users" target="_blank">http://lists.racket-lang.org/users</a> > > > > ____________________ > Racket Users list: > <a href="http://lists.racket-lang.org/users" target="_blank">http://lists.racket-lang.org/users</a> > </div></div></blockquote></div> </div>