Thanks Jos for trying out the code. Thank you for your suggestion for keeping struct in separate module, which is what I want to do.
Veer. On Thu, Apr 21, 2011 at 6:56 PM, Jos Koot <jos.k...@telefonica.net> wrote: > Well, I didn't try it. > It appears that you cannot define a syntax within a begin for syntax. > The following works: > > (begin-for-syntax > (struct proc-struct (name args loe) #:omit-define-syntaxes)) > > However you'll miss the the structure type descriptor. > > Another way is to define the struct in a seperate module and to provide all > defined and require the module for syntax. > This time I checked and it works. > Jos > >> -----Original Message----- >> From: Veer [mailto:diggerr...@gmail.com] >> Sent: 21 April 2011 15:05 >> To: Jos Koot >> Cc: users@racket-lang.org >> Subject: Re: [racket] How to use structure inside define-syntax ? >> >> Thanks for reply Jos. >> >> I still get error when i do >> >> (begin-for-syntax >> (struct proc-struct (name args loe))) >> >> error: " define-syntaxes: syntax definitions not allowed within >> begin-for-syntax ..." >> >> Sorry , if this is not what you meant. >> >> >> On Thu, Apr 21, 2011 at 6:06 PM, Jos Koot >> <jos.k...@telefonica.net> wrote: >> > Wrap the definition of the struct in begin-for-syntax. >> > Jos >> > >> >> -----Original Message----- >> >> From: users-boun...@racket-lang.org >> >> [mailto:users-boun...@racket-lang.org] On Behalf Of Veer >> >> Sent: 21 April 2011 14:22 >> >> To: users@racket-lang.org >> >> Subject: [racket] How to use structure inside define-syntax ? >> >> >> >> How do I use structure's constructor in define-syntax . >> >> >> >> I want to do something like this : >> >> >> >> (struct proc-struct (name args loe)) >> >> >> >> (define-for-syntax (process ps) >> >> #'#t) >> >> >> >> >> >> (define-syntax (procedure stx) >> >> (syntax-case stx () >> >> [(_ name args e1 e2 ...) >> >> (process (proc-struct #'name (syntax->list #'args) >> (syntax->list >> >> #'(e1 e2 ...))))])) >> >> >> >> >> >> >> >> (procedure abc (x y) 2 3) >> >> >> >> >> >> Is there something like struct-for-syntax ? >> >> >> >> Thanks >> >> _________________________________________________ >> >> For list-related administrative tasks: >> >> http://lists.racket-lang.org/listinfo/users >> > >> > > > _________________________________________________ For list-related administrative tasks: http://lists.racket-lang.org/listinfo/users
