[jhc] darcs patch: Fix kind inference + test (and 6 more)
john at repetae.net
Thu Apr 3 21:50:20 EDT 2008
On Thu, Apr 03, 2008 at 09:31:33PM -0400, Samuel Bronson wrote:
> Well, that's what I thought it must be an attempt at. But in fact
> there is other code that does a much better job -- or at least, it
> does it in a way that provides less false comfort. The other code only
> defaults kinds for things that have made it into the kind environment.
> Anyway, the rule of thumb for compilers and RTSs is "crash ASAP",
Yeah, the original kind checker was out of the THIH in haskell paper,
where only simple kinds were allowed so just defaulting to * was a
straightforward way to do it. When I added the kind constraint stuff, it
became necessary to be a bit smarter in the defaulting stage so that
code was no longer needed.
You will still find remenants of the old THIH kind checker and type
checker around, though I have rewritten both a couple times since then,
some code constructs and terminology has a way of sticking around.
John Meacham - ⑆repetae.net⑆john⑈
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