Re: Announcing asciidoc-hs, an AsciiDoc parser in Haskell

["'Guillem Marpons' via pandoc-discuss" <pandoc-discuss-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org>]

El 18/6/21 a las 19:03, John MacFarlane escribió:
> "'Guillem Marpons' via pandoc-discuss"
>> El 16/6/21 a las 17:01, John MacFarlane escribió:
>>
>> Now, is there some example of reader implemented as external library
>> that needs access to included files? It seems to me that the easiest way
>> for a library to integrate with PandocMonad would be to put the class in
>> a different package that the library (asciidoc-hs in this case) could
>> have as a dependency. Is there another way? What I understand is that
>> readCommonMark[Body] calls to a pure parser defined in package
>> commonmark, am I right? But it's not possible for the AsciiDoc parser to
>> be pure.
> 
> One idea would be to use a custom typeclass instead of using
> MonadIO.  Something a bit like PandocMonad, with a pure instance
> and an IO instance.  Say you call it AsciidocMonad. Then hooking
> up your library to pandoc would just be a matter of defining
> 
>      instance AsciidocMonad m => PandocMonad m
> 

Yes, this could work. Most of the functionality in 
AsciidocMonad/PandocMonad instances will be replicated, and in the long 
run we could look for different package boundaries that avoid the 
redundancy. But for now I think it's a good starting point and a 
feasible path for integration. Thanks!

--
Guillem

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