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fun exec [m ::: Type -> Type] (_ : monad m) [ts ::: {Type}] r (fd : folder ts) =
@foldR [m] [fn ts => m $ts]
(fn [nm :: Name] [v :: Type] [rest :: {Type}] [[nm] ~ rest] action acc =>
this <- action;
others <- acc;
return ({nm = this} ++ others))
(return {}) fd r
fun ignore [m ::: Type -> Type] (_ : monad m) [t] (v : m t) = x <- v; return ()
fun mp [m] (_ : monad m) [a] [b] f m =
v <- m;
return (f v)
fun foldR [K] [m] (_ : monad m) [tf :: K -> Type] [tr :: {K} -> Type]
(f : nm :: Name -> t :: K -> rest :: {K}
-> [[nm] ~ rest] =>
tf t -> tr rest -> m (tr ([nm = t] ++ rest)))
(i : tr []) [r ::: {K}] (fl : folder r) =
@Top.fold [fn r :: {K} => $(map tf r) -> m (tr r)]
(fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest]
(acc : _ -> m (tr rest)) r =>
acc' <- acc (r -- nm);
f [nm] [t] [rest] r.nm acc')
(fn _ => return i)
fl
fun foldR2 [K] [m] (_ : monad m) [tf1 :: K -> Type] [tf2 :: K -> Type] [tr :: {K} -> Type]
(f : nm :: Name -> t :: K -> rest :: {K}
-> [[nm] ~ rest] =>
tf1 t -> tf2 t -> tr rest -> m (tr ([nm = t] ++ rest)))
(i : tr []) [r ::: {K}] (fl : folder r) =
@Top.fold [fn r :: {K} => $(map tf1 r) -> $(map tf2 r) -> m (tr r)]
(fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest]
(acc : _ -> _ -> m (tr rest)) r1 r2 =>
acc' <- acc (r1 -- nm) (r2 -- nm);
f [nm] [t] [rest] r1.nm r2.nm acc')
(fn _ _ => return i)
fl
fun foldR3 [K] [m] (_ : monad m) [tf1 :: K -> Type] [tf2 :: K -> Type] [tf3 :: K -> Type] [tr :: {K} -> Type]
(f : nm :: Name -> t :: K -> rest :: {K}
-> [[nm] ~ rest] =>
tf1 t -> tf2 t -> tf3 t -> tr rest -> m (tr ([nm = t] ++ rest)))
(i : tr []) [r ::: {K}] (fl : folder r) =
@Top.fold [fn r :: {K} => $(map tf1 r) -> $(map tf2 r) -> $(map tf3 r) -> m (tr r)]
(fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest]
(acc : _ -> _ -> _ -> m (tr rest)) r1 r2 r3 =>
acc' <- acc (r1 -- nm) (r2 -- nm) (r3 -- nm);
f [nm] [t] [rest] r1.nm r2.nm r3.nm acc')
(fn _ _ _ => return i)
fl
fun mapR0 [K] [m] (_ : monad m) [tr :: K -> Type]
(f : nm :: Name -> t :: K -> m (tr t)) [r ::: {K}] (fl : folder r) =
@Top.fold [fn r => m ($(map tr r))]
(fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest] (acc : m ($(map tr rest))) =>
v <- f [nm] [t];
vs <- acc;
return (vs ++ {nm = v}))
(return {})
fl
fun mapR [K] [m] (_ : monad m) [tf :: K -> Type] [tr :: K -> Type]
(f : nm :: Name -> t :: K -> tf t -> m (tr t)) =
@@foldR [m] _ [tf] [fn r => $(map tr r)]
(fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest] (v : tf t)
(acc : $(map tr rest)) =>
v' <- f [nm] [t] v;
return (acc ++ {nm = v'}))
{}
fun mapR2 [K] [m] (_ : monad m) [tf1 :: K -> Type] [tf2 :: K -> Type] [tr :: K -> Type]
(f : nm :: Name -> t :: K -> tf1 t -> tf2 t -> m (tr t)) =
@@foldR2 [m] _ [tf1] [tf2] [fn r => $(map tr r)]
(fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest] (v1 : tf1 t) (v2 : tf2 t)
(acc : $(map tr rest)) =>
v' <- f [nm] [t] v1 v2;
return (acc ++ {nm = v'}))
{}
fun foldMapR [K] [m] (_ : monad m) [tf :: K -> Type] [tf' :: K -> Type] [tr :: {K} -> Type]
(f : nm :: Name -> t :: K -> rest :: {K}
-> [[nm] ~ rest] =>
tf t -> tr rest -> m (tf' t * tr ([nm = t] ++ rest)))
(i : tr []) [r ::: {K}] (fl : folder r) =
@Top.fold [fn r :: {K} => $(map tf r) -> m ($(map tf' r) * tr r)]
(fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest]
(acc : _ -> m ($(map tf' rest) * tr rest)) r =>
p <- acc (r -- nm);
p' <- f [nm] [t] [rest] r.nm p.2;
return ({nm = p'.1} ++ p.1, p'.2))
(fn _ => return ({}, i))
fl
fun appR [K] [m] (_ : monad m) [tf :: K -> Type]
(f : nm :: Name -> t :: K -> tf t -> m unit)
[r ::: {K}] (fl : folder r) =
@Top.fold [fn r :: {K} => $(map tf r) -> m unit]
(fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest] acc r =>
acc (r -- nm);
f [nm] [t] r.nm)
(fn _ => return ())
fl
fun appR2 [K] [m] (_ : monad m) [tf1 :: K -> Type] [tf2 :: K -> Type]
(f : nm :: Name -> t :: K -> tf1 t -> tf2 t -> m unit)
[r ::: {K}] (fl : folder r) =
@Top.fold [fn r :: {K} => $(map tf1 r) -> $(map tf2 r) -> m unit]
(fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest] acc r1 r2 =>
acc (r1 -- nm) (r2 -- nm);
f [nm] [t] r1.nm r2.nm)
(fn _ _ => return ())
fl
fun appR3 [K] [m] (_ : monad m) [tf1 :: K -> Type] [tf2 :: K -> Type] [tf3 :: K -> Type]
(f : nm :: Name -> t :: K -> tf1 t -> tf2 t -> tf3 t -> m unit)
[r ::: {K}] (fl : folder r) =
@Top.fold [fn r :: {K} => $(map tf1 r) -> $(map tf2 r) -> $(map tf3 r) -> m unit]
(fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest] acc r1 r2 r3 =>
acc (r1 -- nm) (r2 -- nm) (r3 -- nm);
f [nm] [t] r1.nm r2.nm r3.nm)
(fn _ _ _ => return ())
fl
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