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comparison lib/top.ur @ 328:58f1260f293f

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Fixed a mind-numbing De Bruijn bug
author Adam Chlipala <adamc@hcoop.net>
date Thu, 11 Sep 2008 19:59:31 -0400
parents e457d8972ff1
children eec65c11d3e2
comparison
equal deleted inserted replaced
327:3a57f3b3a3f8 328:58f1260f293f
2 [nm = f t] ++ acc) [] 2 [nm = f t] ++ acc) []
3 3
4 fun compose (t1 ::: Type) (t2 ::: Type) (t3 ::: Type) (f1 : t2 -> t3) (f2 : t1 -> t2) (x : t1) = f1 (f2 x) 4 fun compose (t1 ::: Type) (t2 ::: Type) (t3 ::: Type) (f1 : t2 -> t3) (f2 : t1 -> t2) (x : t1) = f1 (f2 x)
5 5
6 fun txt (t ::: Type) (ctx ::: {Unit}) (use ::: {Type}) (sh : show t) (v : t) = cdata (show sh v) 6 fun txt (t ::: Type) (ctx ::: {Unit}) (use ::: {Type}) (sh : show t) (v : t) = cdata (show sh v)
7
8 fun foldTR2 (tf1 :: Type -> Type) (tf2 :: Type -> Type) (tr :: {Type} -> Type)
9 (f : nm :: Name -> t :: Type -> rest :: {Type} -> [nm] ~ rest
10 -> tf1 t -> tf2 t -> tr rest -> tr ([nm = t] ++ rest))
11 (i : tr []) =
12 fold [fn r :: {Type} => $(mapTT tf1 r) -> $(mapTT tf2 r) -> tr r]
13 (fn (nm :: Name) (t :: Type) (rest :: {Type}) (acc : _ -> _ -> tr rest) =>
14 [[nm] ~ rest] =>
15 fn r1 r2 => f [nm] [t] [rest] r1.nm r2.nm (acc (r1 -- nm) (r2 -- nm)))
16 (fn _ _ => i)