Silly me, I was trying (require syntax/parse). Thanks!
On Tue, Jun 17, 2014 at 1:26 PM, Stephen Chang <[email protected]> wrote: > 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) > [(_ name > (def a ...) ... > (in clause do ...) ...) > #'(list a ... ... do ... ...)])) > > (test A (def 1 2 3) (in 4 5 6)) > > On Tue, Jun 17, 2014 at 2:08 PM, Spencer Florence <[email protected]> > 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 < > [email protected]> > > 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 <[email protected] > >: > >> > 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: > >> > http://lists.racket-lang.org/users > >> > > >> > >> > >> > >> -- > >> -- > >> Jens Axel Søgaard > >> > >> ____________________ > >> Racket Users list: > >> http://lists.racket-lang.org/users > > > > > > > > ____________________ > > Racket Users list: > > http://lists.racket-lang.org/users > > >
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