[Haskell-cafe] [GSoC] X Haskell bindings

Antoine Latter aslatter at gmail.com
Mon Mar 31 15:23:23 EDT 2008

I've been looking into to this a bit myself, and have had trouble with
the fact that the XML descriptions of the protocol are extremely
C-centric.  As in, the union types defined in the XML are C-unions,
and I've seen a struct definition which uses padding-bytes to store
semantically useful data.

Both of which are fine things to do in C, but a bit tricky to map onto Haskell.

You should still be able to generate a large amount of data-types and
serializing/deserializing code automatically.

As for code generation, Language.Haskell.Syntax paired with
Language.Haskell.Pretty is a pretty good way to do it, from what I can

On Mon, Mar 31, 2008 at 1:29 PM, Adam Langley <agl at imperialviolet.org> wrote:
> 2008/3/31 Roman Cheplyaka <roma at ro-che.info>:
> >  Especially I need help with "Milestones" section. I'm not quite sure how
>  >  it should look like for such project.
>  This would seem to be a commendable SoC project. I'm not sure that the
>  milestones are all that important - no plan ever survives contact with
>  reality. However, I'd suggest that these would be important aspects:
>  * A working parser for the XCB (this involves choosing an XML parser
>  and getting useful data structures from it)
>  * A working Haskell code generator which outputs bindings for a
>  minimal subset of the functions
>  (the last two need not be in Haskell, although I suspect that it would
>  be a good idea for them to be so)
>  * The first, minimal, Haskell X client using XCB
>  * Having sensible bindings for 25%/50%/75% and 100% of the XCB interface.
>  AGL
>  --
>  Adam Langley agl at imperialviolet.org http://www.imperialviolet.org
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