[Haskell-cafe] Haskell source AST zipper with state

[Niklas Broberg]

On Thu, May 3, 2012 at 2:52 AM, Andrew Seniuk <rasfar at gmail.com> wrote:

> Note that the "Annotated" version of the HSE parser/AST will probably
> not provide enough
>  generality for the sorts of attributes you want to store (it's for
> source locations, unless something changed in the most recent
> release).
>

I do hope you're wrong on that! The annotations are fully general (and have
been all along), so you can store whatever you like there(*). They are
*used* for source locations by the parser, but that's just one possibility.

Cheers,

/Niklas

(*) The only requirement is that you need to store values of the same type
throughout the syntax tree - but Either or Maybe should do the trick there.
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