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comparison lib/ur/top.ur @ 898:d1d0b18afd3d

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Working on Grid; have gone from one dynamic table bizareness to another
author Adam Chlipala <adamc@hcoop.net>
date Sun, 19 Jul 2009 17:45:02 -0400
parents d4e811beb8eb
children 7a4b026e45dd
comparison
equal deleted inserted replaced
897:2faf558b2d05 898:d1d0b18afd3d
49 end 49 end
50 50
51 51
52 fun not b = if b then False else True 52 fun not b = if b then False else True
53 53
54 con idT (t :: Type) = t 54 con id = K ==> fn t :: K => t
55 con record (t :: {Type}) = $t 55 con record (t :: {Type}) = $t
56 con fst = K1 ==> K2 ==> fn t :: (K1 * K2) => t.1 56 con fst = K1 ==> K2 ==> fn t :: (K1 * K2) => t.1
57 con snd = K1 ==> K2 ==> fn t :: (K1 * K2) => t.2 57 con snd = K1 ==> K2 ==> fn t :: (K1 * K2) => t.2
58 con fst3 = K1 ==> K2 ==> K3 ==> fn t :: (K1 * K2 * K3) => t.1 58 con fst3 = K1 ==> K2 ==> K3 ==> fn t :: (K1 * K2 * K3) => t.1
59 con snd3 = K1 ==> K2 ==> K3 ==> fn t :: (K1 * K2 * K3) => t.2 59 con snd3 = K1 ==> K2 ==> K3 ==> fn t :: (K1 * K2 * K3) => t.2
90 | v => Some v) 90 | v => Some v)
91 91
92 fun txt [t] [ctx ::: {Unit}] [use ::: {Type}] (_ : show t) (v : t) = 92 fun txt [t] [ctx ::: {Unit}] [use ::: {Type}] (_ : show t) (v : t) =
93 cdata (show v) 93 cdata (show v)
94 94
95 fun mp [K] [tf1 :: K -> Type] [tf2 :: K -> Type] (f : t ::: K -> tf1 t -> tf2 t) [r :: {K}] (fl : folder r) =
96 fl [fn r :: {K} => $(map tf1 r) -> $(map tf2 r)]
97 (fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest] acc r =>
98 acc (r -- nm) ++ {nm = f r.nm})
99 (fn _ => {})
100
101 fun map2 [K1] [K2] [tf1 :: K1 -> Type] [tf2 :: K2 -> Type] [tf :: K1 -> K2]
102 (f : t ::: K1 -> tf1 t -> tf2 (tf t)) [r :: {K1}] (fl : folder r) =
103 fl [fn r :: {K1} => $(map tf1 r) -> $(map tf2 (map tf r))]
104 (fn [nm :: Name] [t :: K1] [rest :: {K1}] [[nm] ~ rest] acc r =>
105 acc (r -- nm) ++ {nm = f r.nm})
106 (fn _ => {})
107
95 fun foldUR [tf :: Type] [tr :: {Unit} -> Type] 108 fun foldUR [tf :: Type] [tr :: {Unit} -> Type]
96 (f : nm :: Name -> rest :: {Unit} 109 (f : nm :: Name -> rest :: {Unit}
97 -> [[nm] ~ rest] => 110 -> [[nm] ~ rest] =>
98 tf -> tr rest -> tr ([nm] ++ rest)) 111 tf -> tr rest -> tr ([nm] ++ rest))
99 (i : tr []) [r :: {Unit}] (fl : folder r)= 112 (i : tr []) [r :: {Unit}] (fl : folder r) =
100 fl [fn r :: {Unit} => $(mapU tf r) -> tr r] 113 fl [fn r :: {Unit} => $(mapU tf r) -> tr r]
101 (fn [nm :: Name] [t :: Unit] [rest :: {Unit}] [[nm] ~ rest] acc r => 114 (fn [nm :: Name] [t :: Unit] [rest :: {Unit}] [[nm] ~ rest] acc r =>
102 f [nm] [rest] ! r.nm (acc (r -- nm))) 115 f [nm] [rest] ! r.nm (acc (r -- nm)))
103 (fn _ => i) 116 (fn _ => i)
104 117