[racket] How to use structure inside define-syntax ?

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.koot at 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:diggerrrrr at gmail.com]
>> Sent: 21 April 2011 15:05
>> To: Jos Koot
>> Cc: users at 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.koot at telefonica.net> wrote:
>> > Wrap the definition of the struct in begin-for-syntax.
>> > Jos
>> >
>> >> -----Original Message-----
>> >> From: users-bounces at racket-lang.org
>> >> [mailto:users-bounces at racket-lang.org] On Behalf Of Veer
>> >> Sent: 21 April 2011 14:22
>> >> To: users at 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
>> >> _________________________________________________
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>> >
>> >
>
>