Re: Guile VM interpreter in GraalVM Truffle framework

[Jean Abou Samra <jean@abou-samra.fr>]

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Le 23/12/2022 à 18:06, Arvydas Silanskas a écrit :
> Good day,
>
> I have aspirations to run scheme on graalvm's truffle framework. And 
> on superficial research, it seems implementing a Guile VM bytecode 
> interpreter could be easiest path. I just want to inquire, if someone 
> already had similar ideas and in secrecy is working or planning to on 
> this? If you're familiar with truffle (I'm not), any insights on 
> "guile on graal" would also be welcome.



I don't know anything about Truffle, but call/cc and delimited 
continuations strike me as feature that could be hard to
implement on such a thing. At least, it seems so from

https://www.graalvm.org/latest/reference-manual/ruby/Compatibility/

On the other hand, upwards-only continuations, aka escape continuations, 
which are just a different way to do exceptions, should be doable, so 
you could probably ship a version of call/cc where the "cont" value in 
(call/cc (lambda (cont) ...)) can only be used inside of the lambda. 
Same for prompts.

Best,
Jean


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