[racket] A safe version of unsafe-struct-ref [for Whalesong]

Would `struct->vector' + `vector-ref' work?

Vincent


At Wed, 2 Jul 2014 21:06:50 +0200,
Jens Axel Søgaard wrote:
> 
> Is it possible to implement unsafe-struct-ref using safe constructs only?
> 
> The reason behind this peculiar question, is that I am porting racket/match
> to Whalesong. The match compiler uses various unsafe constructs that Whalesong
> doesn't implement. It is straightforward to replace, say,
> unsafe-vector-ref with vector-ref.
> 
> But unsafe-struct-ref ?
> 
> It is okay to use all tricks in the book in phase 1 (Whalesong has
> restrictions in phase 0 only).
> 
> /Jens Axel
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