blob: f9b3d0334d6d0b4fcbb51df08e96fe544a76085c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
|
(** Row folding *)
con folder = K ==> fn r :: {K} =>
tf :: ({K} -> Type)
-> (nm :: Name -> v :: K -> r :: {K} -> [[nm] ~ r] =>
tf r -> tf ([nm = v] ++ r))
-> tf [] -> tf r
fun fold K (tf :: {K} -> Type)
(f : (nm :: Name -> v :: K -> r :: {K} -> [[nm] ~ r] =>
tf r -> tf ([nm = v] ++ r)))
(i : tf []) (r :: {K}) (fl : folder r) = fl [tf] f i
structure Folder = struct
fun nil K (tf :: {K} -> Type)
(f : nm :: Name -> v :: K -> r :: {K} -> [[nm] ~ r] =>
tf r -> tf ([nm = v] ++ r))
(i : tf []) = i
fun cons K (r ::: {K}) (nm :: Name) (v :: K) [[nm] ~ r] (fold : folder r)
(tf :: {K} -> Type)
(f : nm :: Name -> v :: K -> r :: {K} -> [[nm] ~ r] =>
tf r -> tf ([nm = v] ++ r))
(i : tf []) = f [nm] [v] [r] ! (fold [tf] f i)
fun concat K (r1 ::: {K}) (r2 ::: {K}) [r1 ~ r2]
(f1 : folder r1) (f2 : folder r2)
(tf :: {K} -> Type)
(f : nm :: Name -> v :: K -> r :: {K} -> [[nm] ~ r] =>
tf r -> tf ([nm = v] ++ r))
(i : tf []) =
f1 [fn r1' => [r1' ~ r2] => tf (r1' ++ r2)]
(fn (nm :: Name) (v :: K) (r1' :: {K}) [[nm] ~ r1']
(acc : [r1' ~ r2] => tf (r1' ++ r2))
[[nm = v] ++ r1' ~ r2] =>
f [nm] [v] [r1' ++ r2] ! acc)
(fn [[] ~ r2] => f2 [tf] f i) !
fun mp K1 K2 (f ::: K1 -> K2) (r ::: {K1})
(fold : folder r)
(tf :: {K2} -> Type)
(f : nm :: Name -> v :: K2 -> r :: {K2} -> [[nm] ~ r] =>
tf r -> tf ([nm = v] ++ r))
(i : tf []) =
fold [fn r => tf (map f r)]
(fn (nm :: Name) (v :: K1) (rest :: {K1}) [[nm] ~ rest] (acc : tf (map f rest)) =>
f [nm] [f v] [map f rest] ! acc)
i
end
fun not b = if b then False else True
con idT (t :: Type) = t
con record (t :: {Type}) = $t
con fst = K1 ==> K2 ==> fn t :: (K1 * K2) => t.1
con snd = K1 ==> K2 ==> fn t :: (K1 * K2) => t.2
con fst3 = K1 ==> K2 ==> K3 ==> fn t :: (K1 * K2 * K3) => t.1
con snd3 = K1 ==> K2 ==> K3 ==> fn t :: (K1 * K2 * K3) => t.2
con thd3 = K1 ==> K2 ==> K3 ==> fn t :: (K1 * K2 * K3) => t.3
con mapU = K ==> fn f :: K => map (fn _ :: Unit => f)
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 show_option (t ::: Type) (_ : show t) =
mkShow (fn opt : option t =>
case opt of
None => ""
| Some x => show x)
fun read_option (t ::: Type) (_ : read t) =
mkRead (fn s =>
case s of
"" => None
| _ => Some (readError s : t))
(fn s =>
case s of
"" => Some None
| _ => case read s of
None => None
| v => Some v)
fun txt (t ::: Type) (ctx ::: {Unit}) (use ::: {Type}) (_ : show t) (v : t) =
cdata (show v)
fun foldUR (tf :: Type) (tr :: {Unit} -> Type)
(f : nm :: Name -> rest :: {Unit}
-> [[nm] ~ rest] =>
tf -> tr rest -> tr ([nm] ++ rest))
(i : tr []) (r :: {Unit}) (fl : folder r)=
fl [fn r :: {Unit} => $(mapU tf r) -> tr r]
(fn (nm :: Name) (t :: Unit) (rest :: {Unit}) [[nm] ~ rest] acc 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}
-> [[nm] ~ rest] =>
tf1 -> tf2 -> tr rest -> tr ([nm] ++ rest))
(i : tr []) (r :: {Unit}) (fl : folder r) =
fl [fn r :: {Unit} => $(mapU tf1 r) -> $(mapU tf2 r) -> tr r]
(fn (nm :: Name) (t :: Unit) (rest :: {Unit}) [[nm] ~ rest] acc 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}
-> [[nm] ~ rest] =>
tf1 -> tf2 -> xml ctx [] []) =
foldUR2 [tf1] [tf2] [fn _ => xml ctx [] []]
(fn (nm :: Name) (rest :: {Unit}) [[nm] ~ rest] v1 v2 acc =>
<xml>{f [nm] [rest] ! v1 v2}{acc}</xml>)
<xml/>
fun foldR K (tf :: K -> Type) (tr :: {K} -> Type)
(f : nm :: Name -> t :: K -> rest :: {K}
-> [[nm] ~ rest] =>
tf t -> tr rest -> tr ([nm = t] ++ rest))
(i : tr []) (r :: {K}) (fl : folder r) =
fl [fn r :: {K} => $(map tf r) -> tr r]
(fn (nm :: Name) (t :: K) (rest :: {K}) [[nm] ~ rest] (acc : _ -> tr rest) r =>
f [nm] [t] [rest] ! r.nm (acc (r -- nm)))
(fn _ => i)
fun foldR2 K (tf1 :: K -> Type) (tf2 :: K -> Type) (tr :: {K} -> Type)
(f : nm :: Name -> t :: K -> rest :: {K}
-> [[nm] ~ rest] =>
tf1 t -> tf2 t -> tr rest -> tr ([nm = t] ++ rest))
(i : tr []) (r :: {K}) (fl : folder r) =
fl [fn r :: {K} => $(map tf1 r) -> $(map tf2 r) -> tr r]
(fn (nm :: Name) (t :: K) (rest :: {K}) [[nm] ~ rest]
(acc : _ -> _ -> tr rest) r1 r2 =>
f [nm] [t] [rest] ! r1.nm r2.nm (acc (r1 -- nm) (r2 -- nm)))
(fn _ _ => i)
fun foldRX K (tf :: K -> Type) (ctx :: {Unit})
(f : nm :: Name -> t :: K -> rest :: {K}
-> [[nm] ~ rest] =>
tf t -> xml ctx [] []) =
foldR [tf] [fn _ => xml ctx [] []]
(fn (nm :: Name) (t :: K) (rest :: {K}) [[nm] ~ rest] r acc =>
<xml>{f [nm] [t] [rest] ! r}{acc}</xml>)
<xml/>
fun foldRX2 K (tf1 :: K -> Type) (tf2 :: K -> Type) (ctx :: {Unit})
(f : nm :: Name -> t :: K -> rest :: {K}
-> [[nm] ~ rest] =>
tf1 t -> tf2 t -> xml ctx [] []) =
foldR2 [tf1] [tf2] [fn _ => xml ctx [] []]
(fn (nm :: Name) (t :: K) (rest :: {K}) [[nm] ~ rest]
r1 r2 acc =>
<xml>{f [nm] [t] [rest] ! r1 r2}{acc}</xml>)
<xml/>
fun queryI (tables ::: {{Type}}) (exps ::: {Type})
[tables ~ exps] (q : sql_query tables exps)
(f : $(exps ++ map (fn fields :: {Type} => $fields) tables)
-> transaction unit) =
query q
(fn fs _ => f fs)
()
fun queryX (tables ::: {{Type}}) (exps ::: {Type}) (ctx ::: {Unit})
[tables ~ exps] (q : sql_query tables exps)
(f : $(exps ++ map (fn fields :: {Type} => $fields) tables)
-> xml ctx [] []) =
query q
(fn fs acc => return <xml>{acc}{f fs}</xml>)
<xml/>
fun queryX' (tables ::: {{Type}}) (exps ::: {Type}) (ctx ::: {Unit})
[tables ~ exps] (q : sql_query tables exps)
(f : $(exps ++ map (fn fields :: {Type} => $fields) tables)
-> transaction (xml ctx [] [])) =
query q
(fn fs acc =>
r <- f fs;
return <xml>{acc}{r}</xml>)
<xml/>
fun oneOrNoRows (tables ::: {{Type}}) (exps ::: {Type})
[tables ~ exps]
(q : sql_query tables exps) =
query q
(fn fs _ => return (Some fs))
None
fun oneRow (tables ::: {{Type}}) (exps ::: {Type})
[tables ~ exps] (q : sql_query tables exps) =
o <- oneOrNoRows q;
return (case o of
None => error <xml>Query returned no rows</xml>
| 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) (_ : 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_binary sql_eq e1 (sql_inject e2)
|
