fun not b = if b then False else True con idT (t :: Type) = t con record (t :: {Type}) = $t con fstTT (t :: (Type * Type)) = t.1 con sndTT (t :: (Type * Type)) = t.2 con fstTTT (t :: (Type * Type * Type)) = t.1 con sndTTT (t :: (Type * Type * Type)) = t.2 con thdTTT (t :: (Type * Type * Type)) = t.3 con mapTT (f :: Type -> Type) = fold (fn nm t acc [[nm] ~ acc] => [nm = f t] ++ acc) [] con mapUT = fn f :: Type => fold (fn nm t acc [[nm] ~ acc] => [nm = f] ++ acc) [] con mapT2T (f :: (Type * Type) -> Type) = fold (fn nm t acc [[nm] ~ acc] => [nm = f t] ++ acc) [] con mapT3T (f :: (Type * Type * Type) -> Type) = fold (fn nm t acc [[nm] ~ acc] => [nm = f t] ++ acc) [] con ex = fn tf :: (Type -> Type) => res ::: Type -> (choice :: Type -> tf choice -> res) -> res fun ex (tf :: (Type -> Type)) (choice :: Type) (body : tf choice) : ex tf = fn (res ::: Type) (f : choice :: Type -> tf choice -> res) => f [choice] body fun compose (t1 ::: Type) (t2 ::: Type) (t3 ::: Type) (f1 : t2 -> t3) (f2 : t1 -> t2) (x : t1) = f1 (f2 x) fun txt (t ::: Type) (ctx ::: {Unit}) (use ::: {Type}) (sh : show t) (v : t) = cdata (@show sh v) fun foldUR (tf :: Type) (tr :: {Unit} -> Type) (f : nm :: Name -> rest :: {Unit} -> fn [[nm] ~ rest] => tf -> tr rest -> tr ([nm] ++ rest)) (i : tr []) = fold [fn r :: {Unit} => $(mapUT tf r) -> tr r] (fn (nm :: Name) (t :: Unit) (rest :: {Unit}) acc [[nm] ~ rest] r => f [nm] [rest] r.nm (acc (r -- nm))) (fn _ => i) fun foldUR2 (tf1 :: Type) (tf2 :: Type) (tr :: {Unit} -> Type) (f : nm :: Name -> rest :: {Unit} -> fn [[nm] ~ rest] => tf1 -> tf2 -> tr rest -> tr ([nm] ++ rest)) (i : tr []) = fold [fn r :: {Unit} => $(mapUT tf1 r) -> $(mapUT tf2 r) -> tr r] (fn (nm :: Name) (t :: Unit) (rest :: {Unit}) acc [[nm] ~ rest] r1 r2 => f [nm] [rest] r1.nm r2.nm (acc (r1 -- nm) (r2 -- nm))) (fn _ _ => i) fun foldURX2 (tf1 :: Type) (tf2 :: Type) (ctx :: {Unit}) (f : nm :: Name -> rest :: {Unit} -> fn [[nm] ~ rest] => tf1 -> tf2 -> xml ctx [] []) = foldUR2 [tf1] [tf2] [fn _ => xml ctx [] []] (fn (nm :: Name) (rest :: {Unit}) [[nm] ~ rest] v1 v2 acc => {f [nm] [rest] v1 v2}{acc}) fun foldTR (tf :: Type -> Type) (tr :: {Type} -> Type) (f : nm :: Name -> t :: Type -> rest :: {Type} -> fn [[nm] ~ rest] => tf t -> tr rest -> tr ([nm = t] ++ rest)) (i : tr []) = fold [fn r :: {Type} => $(mapTT tf r) -> tr r] (fn (nm :: Name) (t :: Type) (rest :: {Type}) (acc : _ -> tr rest) [[nm] ~ rest] r => f [nm] [t] [rest] r.nm (acc (r -- nm))) (fn _ => i) fun foldT2R (tf :: (Type * Type) -> Type) (tr :: {(Type * Type)} -> Type) (f : nm :: Name -> t :: (Type * Type) -> rest :: {(Type * Type)} -> fn [[nm] ~ rest] => tf t -> tr rest -> tr ([nm = t] ++ rest)) (i : tr []) = fold [fn r :: {(Type * Type)} => $(mapT2T tf r) -> tr r] (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) (acc : _ -> tr rest) [[nm] ~ rest] r => f [nm] [t] [rest] r.nm (acc (r -- nm))) (fn _ => i) fun foldT3R (tf :: (Type * Type * Type) -> Type) (tr :: {(Type * Type * Type)} -> Type) (f : nm :: Name -> t :: (Type * Type * Type) -> rest :: {(Type * Type * Type)} -> fn [[nm] ~ rest] => tf t -> tr rest -> tr ([nm = t] ++ rest)) (i : tr []) = fold [fn r :: {(Type * Type * Type)} => $(mapT3T tf r) -> tr r] (fn (nm :: Name) (t :: (Type * Type * Type)) (rest :: {(Type * Type * Type)}) (acc : _ -> tr rest) [[nm] ~ rest] r => f [nm] [t] [rest] r.nm (acc (r -- nm))) (fn _ => i) fun foldTR2 (tf1 :: Type -> Type) (tf2 :: Type -> Type) (tr :: {Type} -> Type) (f : nm :: Name -> t :: Type -> rest :: {Type} -> fn [[nm] ~ rest] => tf1 t -> tf2 t -> tr rest -> tr ([nm = t] ++ rest)) (i : tr []) = fold [fn r :: {Type} => $(mapTT tf1 r) -> $(mapTT tf2 r) -> tr r] (fn (nm :: Name) (t :: Type) (rest :: {Type}) (acc : _ -> _ -> tr rest) [[nm] ~ rest] r1 r2 => f [nm] [t] [rest] r1.nm r2.nm (acc (r1 -- nm) (r2 -- nm))) (fn _ _ => i) fun foldT2R2 (tf1 :: (Type * Type) -> Type) (tf2 :: (Type * Type) -> Type) (tr :: {(Type * Type)} -> Type) (f : nm :: Name -> t :: (Type * Type) -> rest :: {(Type * Type)} -> fn [[nm] ~ rest] => tf1 t -> tf2 t -> tr rest -> tr ([nm = t] ++ rest)) (i : tr []) = fold [fn r :: {(Type * Type)} => $(mapT2T tf1 r) -> $(mapT2T tf2 r) -> tr r] (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) (acc : _ -> _ -> tr rest) [[nm] ~ rest] r1 r2 => f [nm] [t] [rest] r1.nm r2.nm (acc (r1 -- nm) (r2 -- nm))) (fn _ _ => i) fun foldT3R2 (tf1 :: (Type * Type * Type) -> Type) (tf2 :: (Type * Type * Type) -> Type) (tr :: {(Type * Type * Type)} -> Type) (f : nm :: Name -> t :: (Type * Type * Type) -> rest :: {(Type * Type * Type)} -> fn [[nm] ~ rest] => tf1 t -> tf2 t -> tr rest -> tr ([nm = t] ++ rest)) (i : tr []) = fold [fn r :: {(Type * Type * Type)} => $(mapT3T tf1 r) -> $(mapT3T tf2 r) -> tr r] (fn (nm :: Name) (t :: (Type * Type * Type)) (rest :: {(Type * Type * Type)}) (acc : _ -> _ -> tr rest) [[nm] ~ rest] r1 r2 => f [nm] [t] [rest] r1.nm r2.nm (acc (r1 -- nm) (r2 -- nm))) (fn _ _ => i) fun foldTRX (tf :: Type -> Type) (ctx :: {Unit}) (f : nm :: Name -> t :: Type -> rest :: {Type} -> fn [[nm] ~ rest] => tf t -> xml ctx [] []) = foldTR [tf] [fn _ => xml ctx [] []] (fn (nm :: Name) (t :: Type) (rest :: {Type}) [[nm] ~ rest] r acc => {f [nm] [t] [rest] r}{acc}) fun foldT2RX (tf :: (Type * Type) -> Type) (ctx :: {Unit}) (f : nm :: Name -> t :: (Type * Type) -> rest :: {(Type * Type)} -> fn [[nm] ~ rest] => tf t -> xml ctx [] []) = foldT2R [tf] [fn _ => xml ctx [] []] (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) [[nm] ~ rest] r acc => {f [nm] [t] [rest] r}{acc}) fun foldT3RX (tf :: (Type * Type * Type) -> Type) (ctx :: {Unit}) (f : nm :: Name -> t :: (Type * Type * Type) -> rest :: {(Type * Type * Type)} -> fn [[nm] ~ rest] => tf t -> xml ctx [] []) = foldT3R [tf] [fn _ => xml ctx [] []] (fn (nm :: Name) (t :: (Type * Type * Type)) (rest :: {(Type * Type * Type)}) [[nm] ~ rest] r acc => {f [nm] [t] [rest] r}{acc}) fun foldTRX2 (tf1 :: Type -> Type) (tf2 :: Type -> Type) (ctx :: {Unit}) (f : nm :: Name -> t :: Type -> rest :: {Type} -> fn [[nm] ~ rest] => tf1 t -> tf2 t -> xml ctx [] []) = foldTR2 [tf1] [tf2] [fn _ => xml ctx [] []] (fn (nm :: Name) (t :: Type) (rest :: {Type}) [[nm] ~ rest] r1 r2 acc => {f [nm] [t] [rest] r1 r2}{acc}) fun foldT2RX2 (tf1 :: (Type * Type) -> Type) (tf2 :: (Type * Type) -> Type) (ctx :: {Unit}) (f : nm :: Name -> t :: (Type * Type) -> rest :: {(Type * Type)} -> fn [[nm] ~ rest] => tf1 t -> tf2 t -> xml ctx [] []) = foldT2R2 [tf1] [tf2] [fn _ => xml ctx [] []] (fn (nm :: Name) (t :: (Type * Type)) (rest :: {(Type * Type)}) [[nm] ~ rest] r1 r2 acc => {f [nm] [t] [rest] r1 r2}{acc}) fun foldT3RX2 (tf1 :: (Type * Type * Type) -> Type) (tf2 :: (Type * Type * Type) -> Type) (ctx :: {Unit}) (f : nm :: Name -> t :: (Type * Type * Type) -> rest :: {(Type * Type * Type)} -> fn [[nm] ~ rest] => tf1 t -> tf2 t -> xml ctx [] []) = foldT3R2 [tf1] [tf2] [fn _ => xml ctx [] []] (fn (nm :: Name) (t :: (Type * Type * Type)) (rest :: {(Type * Type * Type)}) [[nm] ~ rest] r1 r2 acc => {f [nm] [t] [rest] r1 r2}{acc}) fun queryX (tables ::: {{Type}}) (exps ::: {Type}) (ctx ::: {Unit}) (q : sql_query tables exps) [tables ~ exps] (f : $(exps ++ fold (fn nm (fields :: {Type}) acc [[nm] ~ acc] => [nm = $fields] ++ acc) [] tables) -> xml ctx [] []) = query q (fn fs acc => return {acc}{f fs}) fun queryX' (tables ::: {{Type}}) (exps ::: {Type}) (ctx ::: {Unit}) (q : sql_query tables exps) [tables ~ exps] (f : $(exps ++ fold (fn nm (fields :: {Type}) acc [[nm] ~ acc] => [nm = $fields] ++ acc) [] tables) -> transaction (xml ctx [] [])) = query q (fn fs acc => r <- f fs; return {acc}{r}) fun oneOrNoRows (tables ::: {{Type}}) (exps ::: {Type}) (q : sql_query tables exps) [tables ~ exps] = query q (fn fs _ => return (Some fs)) None fun oneRow (tables ::: {{Type}}) (exps ::: {Type}) (q : sql_query tables exps) [tables ~ exps] = o <- oneOrNoRows q; return (case o of None => error Query returned no rows | Some r => r) fun eqNullable (tables ::: {{Type}}) (agg ::: {{Type}}) (exps ::: {Type}) (t ::: Type) (_ : sql_injectable (option t)) (e1 : sql_exp tables agg exps (option t)) (e2 : sql_exp tables agg exps (option t)) = (SQL ({e1} IS NULL AND {e2} IS NULL) OR {e1} = {e2}) fun eqNullable' (tables ::: {{Type}}) (agg ::: {{Type}}) (exps ::: {Type}) (t ::: Type) (inj : sql_injectable (option t)) (e1 : sql_exp tables agg exps (option t)) (e2 : option t) = case e2 of None => (SQL {e1} IS NULL) | Some _ => sql_comparison sql_eq e1 (@sql_inject inj e2)