adamc@834
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1 fun exec [m ::: Type -> Type] (_ : monad m) [ts ::: {Type}] r (fd : folder ts) =
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adamc@834
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2 foldR [m] [fn ts => m $ts]
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adamc@834
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3 (fn [nm :: Name] [v :: Type] [rest :: {Type}] [[nm] ~ rest] action acc =>
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adamc@834
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4 this <- action;
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adamc@834
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5 others <- acc;
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adamc@834
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6 return ({nm = this} ++ others))
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adamc@834
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7 (return {}) [ts] fd r
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adamc@898
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8
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adamc@898
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9 fun ignore [m ::: Type -> Type] (_ : monad m) [t] (v : m t) = x <- v; return ()
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adamc@905
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10
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adamc@917
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11 fun mp [m] (_ : monad m) [a] [b] f m =
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adamc@917
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12 v <- m;
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adamc@917
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13 return (f v)
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adamc@917
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14
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adamc@905
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15 fun foldR [K] [m] (_ : monad m) [tf :: K -> Type] [tr :: {K} -> Type]
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adamc@905
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16 (f : nm :: Name -> t :: K -> rest :: {K}
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adamc@905
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17 -> [[nm] ~ rest] =>
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adamc@905
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18 tf t -> tr rest -> m (tr ([nm = t] ++ rest)))
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adamc@905
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19 (i : tr []) [r :: {K}] (fl : folder r) =
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adamc@905
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20 Top.fold [fn r :: {K} => $(map tf r) -> m (tr r)]
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adamc@905
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21 (fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest]
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adamc@905
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22 (acc : _ -> m (tr rest)) r =>
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adamc@905
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23 acc' <- acc (r -- nm);
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adamc@905
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24 f [nm] [t] [rest] ! r.nm acc')
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adamc@905
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25 (fn _ => return i)
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adamc@905
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26 [_] fl
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adamc@905
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27
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adamc@905
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28 fun foldR2 [K] [m] (_ : monad m) [tf1 :: K -> Type] [tf2 :: K -> Type] [tr :: {K} -> Type]
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adamc@905
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29 (f : nm :: Name -> t :: K -> rest :: {K}
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adamc@905
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30 -> [[nm] ~ rest] =>
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adamc@905
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31 tf1 t -> tf2 t -> tr rest -> m (tr ([nm = t] ++ rest)))
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adamc@905
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32 (i : tr []) [r :: {K}] (fl : folder r) =
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adamc@905
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33 Top.fold [fn r :: {K} => $(map tf1 r) -> $(map tf2 r) -> m (tr r)]
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adamc@905
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34 (fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest]
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adamc@905
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35 (acc : _ -> _ -> m (tr rest)) r1 r2 =>
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adamc@905
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36 acc' <- acc (r1 -- nm) (r2 -- nm);
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adamc@905
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37 f [nm] [t] [rest] ! r1.nm r2.nm acc')
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adamc@905
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38 (fn _ _ => return i)
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adamc@905
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39 [_] fl
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adamc@905
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40
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adamc@910
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41 fun foldR3 [K] [m] (_ : monad m) [tf1 :: K -> Type] [tf2 :: K -> Type] [tf3 :: K -> Type] [tr :: {K} -> Type]
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adamc@910
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42 (f : nm :: Name -> t :: K -> rest :: {K}
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adamc@910
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43 -> [[nm] ~ rest] =>
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adamc@910
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44 tf1 t -> tf2 t -> tf3 t -> tr rest -> m (tr ([nm = t] ++ rest)))
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adamc@910
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45 (i : tr []) [r :: {K}] (fl : folder r) =
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adamc@910
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46 Top.fold [fn r :: {K} => $(map tf1 r) -> $(map tf2 r) -> $(map tf3 r) -> m (tr r)]
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adamc@910
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47 (fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest]
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adamc@910
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48 (acc : _ -> _ -> _ -> m (tr rest)) r1 r2 r3 =>
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adamc@910
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49 acc' <- acc (r1 -- nm) (r2 -- nm) (r3 -- nm);
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adamc@910
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50 f [nm] [t] [rest] ! r1.nm r2.nm r3.nm acc')
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adamc@910
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51 (fn _ _ _ => return i)
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adamc@910
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52 [_] fl
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adamc@910
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53
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adamc@905
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54 fun mapR [K] [m] (_ : monad m) [tf :: K -> Type] [tr :: K -> Type]
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adamc@905
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55 (f : nm :: Name -> t :: K -> tf t -> m (tr t)) =
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adamc@905
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56 @@foldR [m] _ [tf] [fn r => $(map tr r)]
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adamc@905
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57 (fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest] (v : tf t)
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adamc@905
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58 (acc : $(map tr rest)) =>
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adamc@905
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59 v' <- f [nm] [t] v;
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adamc@905
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60 return (acc ++ {nm = v'}))
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adamc@905
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61 {}
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adamc@937
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62
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adamc@937
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63 fun mapR2 [K] [m] (_ : monad m) [tf1 :: K -> Type] [tf2 :: K -> Type] [tr :: K -> Type]
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adamc@937
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64 (f : nm :: Name -> t :: K -> tf1 t -> tf2 t -> m (tr t)) =
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adamc@937
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65 @@foldR2 [m] _ [tf1] [tf2] [fn r => $(map tr r)]
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adamc@937
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66 (fn [nm :: Name] [t :: K] [rest :: {K}] [[nm] ~ rest] (v1 : tf1 t) (v2 : tf2 t)
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adamc@937
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67 (acc : $(map tr rest)) =>
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adamc@937
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68 v' <- f [nm] [t] v1 v2;
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adamc@937
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69 return (acc ++ {nm = v'}))
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adamc@937
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70 {}
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