Remove the (). The construct syntax-case needs the () which in general can be a list of identifiers, but most often an empty list, (), is used. Any identifiers in the list are treated by syntax-case as a literal.
The construct syntax-parse does not use a list of identifiers. It uses an alternative way of specifying literal identifiers. /Jens Axel 2016-09-22 17:27 GMT+02:00 C K Kashyap <ckkash...@gmail.com>: > Thanks Andrew ... I got past that error. I now get an error below - > " syntax-parse: expected clause in: ()" > > (define-syntax (define-primitive stx) > (syntax-parse stx () ; ERROR > [(_ (primitive-name:id arg:id ...) body ...+) > #:with table-name > (format-id #'primitive-name "~a-property-table" > #'primitive-name) > #'(begin > (define table-name (hash 'is-prime #t > 'arg-count (length '(arg ...)) > 'emitter (lambda (arg ...) body ...)))) > > (define-primitive-application-syntax (primitive-name arg ...))])) > > On Thu, Sep 22, 2016 at 8:21 AM, Andrew Kent <sgt...@gmail.com> wrote: > >> The '...' that is causing the error is a '...' at the level of the >> _initial/outer_ macro (define-primitive-application-syntax), and so your >> final use of '...' is trying to splice a parameter of the _initial macro_ >> (define-primitive-application-syntax), but you are actually trying to >> output a _literal_ '...' in the syntax you are generating because you want >> it to be a part of the macro you are generating/defining via >> define-primitive-application-syntax (i.e. primitive-name). >> >> TL;DR you want this instead I believe: >> >> … >> (define-simple-macro (define-primitive-application-syntax >> (primitive-name:id arg:id ...)) >> (define-simple-macro (primitive-name arg-expr:expr (... ...)) >> (list 'primitive-name arg-expr (... ...)))) >> >> -- >> 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. > -- -- Jens Axel Søgaard -- 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.
