adamc@623
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1 (** Row folding *)
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adamc@623
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2
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adamc@623
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3 con folder = K ==> fn r :: {K} =>
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adamc@623
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4 tf :: ({K} -> Type)
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adamc@623
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5 -> (nm :: Name -> v :: K -> r :: {K} -> tf r
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adamc@629
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6 -> [[nm] ~ r] => tf ([nm = v] ++ r))
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adamc@623
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7 -> tf [] -> tf r
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adamc@623
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8
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adamc@627
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9 structure Folder = struct
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adamc@631
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10 fun fold K (r ::: {K}) (fl : folder r) = fl
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adamc@631
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11
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adamc@627
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12 fun nil K (tf :: {K} -> Type)
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adamc@627
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13 (f : nm :: Name -> v :: K -> r :: {K} -> tf r
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adamc@629
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14 -> [[nm] ~ r] => tf ([nm = v] ++ r))
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adamc@627
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15 (i : tf []) = i
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adamc@627
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16
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adamc@627
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17 fun cons K (r ::: {K}) (nm :: Name) (v :: K) [[nm] ~ r] (fold : folder r)
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adamc@627
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18 (tf :: {K} -> Type)
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adamc@627
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19 (f : nm :: Name -> v :: K -> r :: {K} -> tf r
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adamc@629
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20 -> [[nm] ~ r] => tf ([nm = v] ++ r))
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adamc@629
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21 (i : tf []) = f [nm] [v] [r] (fold [tf] f i) !
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adamc@628
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22
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adamc@628
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23 fun concat K (r1 ::: {K}) (r2 ::: {K}) [r1 ~ r2]
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adamc@628
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24 (f1 : folder r1) (f2 : folder r2)
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adamc@628
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25 (tf :: {K} -> Type)
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adamc@628
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26 (f : nm :: Name -> v :: K -> r :: {K} -> tf r
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adamc@629
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27 -> [[nm] ~ r] => tf ([nm = v] ++ r))
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adamc@628
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28 (i : tf []) =
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adamc@629
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29 f1 [fn r1' => [r1' ~ r2] => tf (r1' ++ r2)]
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adamc@629
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30 (fn (nm :: Name) (v :: K) (r1' :: {K}) (acc : [r1' ~ r2] => tf (r1' ++ r2))
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adamc@628
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31 [[nm] ~ r1'] [[nm = v] ++ r1' ~ r2] =>
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adamc@629
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32 f [nm] [v] [r1' ++ r2] acc !)
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adamc@629
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33 (fn [[] ~ r2] => f2 [tf] f i) !
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adamc@630
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34
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adamc@630
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35 fun mp K1 K2 (f ::: K1 -> K2) (r ::: {K1})
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adamc@630
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36 (fold : folder r)
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adamc@630
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37 (tf :: {K2} -> Type)
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adamc@630
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38 (f : nm :: Name -> v :: K2 -> r :: {K2} -> tf r
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adamc@630
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39 -> [[nm] ~ r] => tf ([nm = v] ++ r))
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adamc@630
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40 (i : tf []) =
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adamc@630
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41 fold [fn r => tf (map f r)]
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adamc@630
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42 (fn (nm :: Name) (v :: K1) (rest :: {K1}) (acc : tf (map f rest)) [[nm] ~ rest] =>
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adamc@630
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43 f [nm] [f v] [map f rest] acc !)
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adamc@630
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44 i
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adamc@627
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45 end
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adamc@627
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46
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adamc@623
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47
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adamc@422
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48 fun not b = if b then False else True
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adamc@422
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49
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adamc@356
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50 con idT (t :: Type) = t
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adamc@356
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51 con record (t :: {Type}) = $t
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adamc@356
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52 con fstTT (t :: (Type * Type)) = t.1
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adamc@356
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53 con sndTT (t :: (Type * Type)) = t.2
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adamc@445
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54 con fstTTT (t :: (Type * Type * Type)) = t.1
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adamc@445
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55 con sndTTT (t :: (Type * Type * Type)) = t.2
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adamc@445
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56 con thdTTT (t :: (Type * Type * Type)) = t.3
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adamc@329
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57
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adamc@621
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58 con mapUT = fn f :: Type => map (fn _ :: Unit => f)
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adamc@445
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59
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adamc@339
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60 con ex = fn tf :: (Type -> Type) =>
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adamc@356
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61 res ::: Type -> (choice :: Type -> tf choice -> res) -> res
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adamc@339
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62
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adamc@339
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63 fun ex (tf :: (Type -> Type)) (choice :: Type) (body : tf choice) : ex tf =
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adamc@356
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64 fn (res ::: Type) (f : choice :: Type -> tf choice -> res) =>
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adamc@356
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65 f [choice] body
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adamc@339
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66
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adamc@356
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67 fun compose (t1 ::: Type) (t2 ::: Type) (t3 ::: Type)
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adamc@356
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68 (f1 : t2 -> t3) (f2 : t1 -> t2) (x : t1) = f1 (f2 x)
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adamc@325
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69
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adamc@564
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70 fun txt (t ::: Type) (ctx ::: {Unit}) (use ::: {Type}) (_ : show t) (v : t) =
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adamc@564
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71 cdata (show v)
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adamc@328
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72
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adamc@411
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73 fun foldUR (tf :: Type) (tr :: {Unit} -> Type)
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adamc@411
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74 (f : nm :: Name -> rest :: {Unit}
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adamc@629
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75 -> [[nm] ~ rest] =>
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adamc@411
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76 tf -> tr rest -> tr ([nm] ++ rest))
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adamc@623
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77 (i : tr []) (r ::: {Unit}) (fold : folder r)=
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adamc@411
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78 fold [fn r :: {Unit} => $(mapUT tf r) -> tr r]
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adamc@623
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79 (fn (nm :: Name) (t :: Unit) (rest :: {Unit}) acc
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adamc@623
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80 [[nm] ~ rest] r =>
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adamc@629
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81 f [nm] [rest] ! r.nm (acc (r -- nm)))
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adamc@623
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82 (fn _ => i)
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adamc@411
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83
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adamc@418
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84 fun foldUR2 (tf1 :: Type) (tf2 :: Type) (tr :: {Unit} -> Type)
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adamc@418
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85 (f : nm :: Name -> rest :: {Unit}
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adamc@629
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86 -> [[nm] ~ rest] =>
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adamc@418
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87 tf1 -> tf2 -> tr rest -> tr ([nm] ++ rest))
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adamc@623
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88 (i : tr []) (r ::: {Unit}) (fold : folder r) =
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adamc@418
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89 fold [fn r :: {Unit} => $(mapUT tf1 r) -> $(mapUT tf2 r) -> tr r]
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adamc@623
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90 (fn (nm :: Name) (t :: Unit) (rest :: {Unit}) acc
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adamc@623
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91 [[nm] ~ rest] r1 r2 =>
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adamc@629
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92 f [nm] [rest] ! r1.nm r2.nm (acc (r1 -- nm) (r2 -- nm)))
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adamc@623
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93 (fn _ _ => i)
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adamc@418
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94
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adamc@418
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95 fun foldURX2 (tf1 :: Type) (tf2 :: Type) (ctx :: {Unit})
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adamc@418
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96 (f : nm :: Name -> rest :: {Unit}
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adamc@629
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97 -> [[nm] ~ rest] =>
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adamc@418
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98 tf1 -> tf2 -> xml ctx [] []) =
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adamc@418
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99 foldUR2 [tf1] [tf2] [fn _ => xml ctx [] []]
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adamc@418
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100 (fn (nm :: Name) (rest :: {Unit}) [[nm] ~ rest] v1 v2 acc =>
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adamc@629
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101 <xml>{f [nm] [rest] ! v1 v2}{acc}</xml>)
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adamc@418
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102 <xml/>
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adamc@418
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103
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adamc@623
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104 fun foldR K (tf :: K -> Type) (tr :: {K} -> Type)
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adamc@623
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105 (f : nm :: Name -> t :: K -> rest :: {K}
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adamc@629
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106 -> [[nm] ~ rest] =>
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adamc@356
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107 tf t -> tr rest -> tr ([nm = t] ++ rest))
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adamc@623
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108 (i : tr []) (r ::: {K}) (fold : folder r) =
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adamc@623
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109 fold [fn r :: {K} => $(map tf r) -> tr r]
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adamc@623
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110 (fn (nm :: Name) (t :: K) (rest :: {K}) (acc : _ -> tr rest)
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adamc@356
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111 [[nm] ~ rest] r =>
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adamc@629
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112 f [nm] [t] [rest] ! r.nm (acc (r -- nm)))
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adamc@356
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113 (fn _ => i)
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adamc@336
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114
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adamc@623
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115 fun foldR2 K (tf1 :: K -> Type) (tf2 :: K -> Type) (tr :: {K} -> Type)
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adamc@623
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116 (f : nm :: Name -> t :: K -> rest :: {K}
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adamc@629
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117 -> [[nm] ~ rest] =>
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adamc@367
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118 tf1 t -> tf2 t -> tr rest -> tr ([nm = t] ++ rest))
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adamc@623
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119 (i : tr []) (r ::: {K}) (fold : folder r) =
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adamc@623
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120 fold [fn r :: {K} => $(map tf1 r) -> $(map tf2 r) -> tr r]
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adamc@623
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121 (fn (nm :: Name) (t :: K) (rest :: {K})
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adamc@623
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122 (acc : _ -> _ -> tr rest) [[nm] ~ rest] r1 r2 =>
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adamc@629
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123 f [nm] [t] [rest] ! r1.nm r2.nm (acc (r1 -- nm) (r2 -- nm)))
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adamc@623
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124 (fn _ _ => i)
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adamc@332
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125
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adamc@623
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126 fun foldRX K (tf :: K -> Type) (ctx :: {Unit})
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adamc@623
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127 (f : nm :: Name -> t :: K -> rest :: {K}
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adamc@629
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128 -> [[nm] ~ rest] =>
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adamc@356
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129 tf t -> xml ctx [] []) =
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adamc@623
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130 foldR [tf] [fn _ => xml ctx [] []]
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adamc@623
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131 (fn (nm :: Name) (t :: K) (rest :: {K}) [[nm] ~ rest] r acc =>
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adamc@629
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132 <xml>{f [nm] [t] [rest] ! r}{acc}</xml>)
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adamc@623
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133 <xml/>
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adamc@336
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134
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adamc@623
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135 fun foldRX2 K (tf1 :: K -> Type) (tf2 :: K -> Type) (ctx :: {Unit})
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adamc@623
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136 (f : nm :: Name -> t :: K -> rest :: {K}
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adamc@629
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137 -> [[nm] ~ rest] =>
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adamc@356
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138 tf1 t -> tf2 t -> xml ctx [] []) =
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adamc@623
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139 foldR2 [tf1] [tf2] [fn _ => xml ctx [] []]
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adamc@623
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140 (fn (nm :: Name) (t :: K) (rest :: {K}) [[nm] ~ rest]
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adamc@623
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141 r1 r2 acc =>
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adamc@629
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142 <xml>{f [nm] [t] [rest] ! r1 r2}{acc}</xml>)
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adamc@623
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143 <xml/>
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adamc@445
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144
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adamc@356
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145 fun queryX (tables ::: {{Type}}) (exps ::: {Type}) (ctx ::: {Unit})
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adamc@356
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146 (q : sql_query tables exps) [tables ~ exps]
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adamc@621
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147 (f : $(exps ++ map (fn fields :: {Type} => $fields) tables)
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adamc@356
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148 -> xml ctx [] []) =
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adamc@356
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149 query q
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adamc@356
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150 (fn fs acc => return <xml>{acc}{f fs}</xml>)
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adamc@360
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151 <xml/>
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adamc@341
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152
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adamc@469
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153 fun queryX' (tables ::: {{Type}}) (exps ::: {Type}) (ctx ::: {Unit})
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adamc@469
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154 (q : sql_query tables exps) [tables ~ exps]
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adamc@621
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155 (f : $(exps ++ map (fn fields :: {Type} => $fields) tables)
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adamc@469
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156 -> transaction (xml ctx [] [])) =
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adamc@469
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157 query q
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adamc@469
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158 (fn fs acc =>
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adamc@469
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159 r <- f fs;
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adamc@469
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160 return <xml>{acc}{r}</xml>)
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adamc@469
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161 <xml/>
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adamc@469
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162
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adamc@356
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163 fun oneOrNoRows (tables ::: {{Type}}) (exps ::: {Type})
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adamc@629
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164 [tables ~ exps]
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adamc@629
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165 (q : sql_query tables exps) =
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adamc@356
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166 query q
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adamc@356
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167 (fn fs _ => return (Some fs))
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adamc@356
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168 None
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adamc@440
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169
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adamc@440
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170 fun oneRow (tables ::: {{Type}}) (exps ::: {Type})
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adamc@629
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171 [tables ~ exps] (q : sql_query tables exps) =
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adamc@440
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172 o <- oneOrNoRows q;
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adamc@440
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173 return (case o of
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adamc@440
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174 None => error <xml>Query returned no rows</xml>
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adamc@440
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175 | Some r => r)
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adamc@440
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176
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adamc@470
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177 fun eqNullable (tables ::: {{Type}}) (agg ::: {{Type}}) (exps ::: {Type})
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adamc@470
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178 (t ::: Type) (_ : sql_injectable (option t))
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adamc@470
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179 (e1 : sql_exp tables agg exps (option t))
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adamc@470
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180 (e2 : sql_exp tables agg exps (option t)) =
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adamc@471
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181 (SQL ({e1} IS NULL AND {e2} IS NULL) OR {e1} = {e2})
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adamc@470
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182
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adamc@470
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183 fun eqNullable' (tables ::: {{Type}}) (agg ::: {{Type}}) (exps ::: {Type})
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adamc@564
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184 (t ::: Type) (_ : sql_injectable (option t))
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adamc@470
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185 (e1 : sql_exp tables agg exps (option t))
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adamc@470
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186 (e2 : option t) =
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adamc@470
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187 case e2 of
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adamc@471
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188 None => (SQL {e1} IS NULL)
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adamc@564
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189 | Some _ => sql_binary sql_eq e1 (sql_inject e2)
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