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Cookie demo code; fix error message display
author Adam Chlipala <adamc@hcoop.net>
date Thu, 06 Nov 2008 12:22:50 -0500
parents f542bc3133dc
children 3f1b9231a37b
rev   line source
adamc@56 1 type int
adamc@56 2 type float
adamc@56 3 type string
adamc@436 4 type time
adamc@91 5
adamc@119 6 type unit = {}
adamc@119 7
adamc@186 8 datatype bool = False | True
adamc@186 9
adamc@288 10 datatype option t = None | Some of t
adamc@284 11
adamc@91 12
adamc@256 13 (** Basic type classes *)
adamc@256 14
adamc@256 15 class eq
adamc@256 16 val eq : t ::: Type -> eq t -> t -> t -> bool
adamc@257 17 val ne : t ::: Type -> eq t -> t -> t -> bool
adamc@256 18 val eq_int : eq int
adamc@394 19 val eq_float : eq float
adamc@256 20 val eq_string : eq string
adamc@256 21 val eq_bool : eq bool
adamc@437 22 val eq_time : eq time
adamc@422 23 val mkEq : t ::: Type -> (t -> t -> bool) -> eq t
adamc@256 24
adamc@389 25 class num
adamc@417 26 val zero : t ::: Type -> num t -> t
adamc@389 27 val neg : t ::: Type -> num t -> t -> t
adamc@389 28 val plus : t ::: Type -> num t -> t -> t -> t
adamc@389 29 val minus : t ::: Type -> num t -> t -> t -> t
adamc@389 30 val times : t ::: Type -> num t -> t -> t -> t
adamc@389 31 val div : t ::: Type -> num t -> t -> t -> t
adamc@389 32 val mod : t ::: Type -> num t -> t -> t -> t
adamc@389 33 val num_int : num int
adamc@390 34 val num_float : num float
adamc@389 35
adamc@391 36 class ord
adamc@391 37 val lt : t ::: Type -> ord t -> t -> t -> bool
adamc@391 38 val le : t ::: Type -> ord t -> t -> t -> bool
adamc@391 39 val gt : t ::: Type -> ord t -> t -> t -> bool
adamc@391 40 val ge : t ::: Type -> ord t -> t -> t -> bool
adamc@391 41 val ord_int : ord int
adamc@394 42 val ord_float : ord float
adamc@394 43 val ord_string : ord string
adamc@394 44 val ord_bool : ord bool
adamc@437 45 val ord_time : ord time
adamc@391 46
adamc@256 47
adamc@283 48 (** String operations *)
adamc@283 49
adamc@283 50 val strcat : string -> string -> string
adamc@283 51
adamc@286 52 class show
adamc@286 53 val show : t ::: Type -> show t -> t -> string
adamc@286 54 val show_int : show int
adamc@286 55 val show_float : show float
adamc@286 56 val show_string : show string
adamc@286 57 val show_bool : show bool
adamc@436 58 val show_time : show time
adamc@452 59 val mkShow : t ::: Type -> (t -> string) -> show t
adamc@286 60
adamc@290 61 class read
adamc@290 62 val read : t ::: Type -> read t -> string -> option t
adamc@292 63 val readError : t ::: Type -> read t -> string -> t
adamc@292 64 (* [readError] calls [error] if the input is malformed. *)
adamc@290 65 val read_int : read int
adamc@290 66 val read_float : read float
adamc@290 67 val read_string : read string
adamc@290 68 val read_bool : read bool
adamc@436 69 val read_time : read time
adamc@288 70
adamc@283 71
adamc@456 72 (** * Transactions *)
adamc@456 73
adamc@456 74 con transaction :: Type -> Type
adamc@456 75
adamc@456 76 val return : t ::: Type
adamc@456 77 -> t -> transaction t
adamc@456 78 val bind : t1 ::: Type -> t2 ::: Type
adamc@456 79 -> transaction t1 -> (t1 -> transaction t2)
adamc@456 80 -> transaction t2
adamc@456 81
adamc@456 82
adamc@456 83 (** HTTP operations *)
adamc@456 84
adamc@456 85 val requestHeader : string -> transaction (option string)
adamc@456 86
adamc@459 87 con http_cookie :: Type -> Type
adamc@459 88 val getCookie : t ::: Type -> http_cookie t -> transaction (option t)
adamc@459 89 val setCookie : t ::: Type -> http_cookie t -> t -> transaction unit
adamc@459 90
adamc@456 91
adamc@203 92 (** SQL *)
adamc@203 93
adamc@203 94 con sql_table :: {Type} -> Type
adamc@203 95
adamc@204 96 (*** Queries *)
adamc@204 97
adamc@233 98 con sql_query :: {{Type}} -> {Type} -> Type
adamc@233 99 con sql_query1 :: {{Type}} -> {{Type}} -> {Type} -> Type
adamc@234 100 con sql_exp :: {{Type}} -> {{Type}} -> {Type} -> Type -> Type
adamc@204 101
adamc@223 102 con sql_subset :: {{Type}} -> {{Type}} -> Type
adamc@223 103 val sql_subset : keep_drop :: {({Type} * {Type})}
adamc@354 104 -> sql_subset
adamc@354 105 (fold (fn nm (fields :: ({Type} * {Type}))
adamc@354 106 acc [[nm] ~ acc]
adamc@354 107 [fields.1 ~ fields.2] =>
adamc@354 108 [nm = fields.1 ++ fields.2]
adamc@354 109 ++ acc) [] keep_drop)
adamc@354 110 (fold (fn nm (fields :: ({Type} * {Type}))
adamc@354 111 acc [[nm] ~ acc] =>
adamc@354 112 [nm = fields.1] ++ acc)
adamc@354 113 [] keep_drop)
adamc@354 114 val sql_subset_all : tables :: {{Type}} -> sql_subset tables tables
adamc@223 115
adamc@229 116 val sql_query1 : tables ::: {{Type}}
adamc@354 117 -> grouped ::: {{Type}}
adamc@354 118 -> selectedFields ::: {{Type}}
adamc@354 119 -> selectedExps ::: {Type}
adamc@354 120 -> {From : $(fold (fn nm (fields :: {Type}) acc [[nm] ~ acc] =>
adamc@354 121 [nm = sql_table fields] ++ acc)
adamc@354 122 [] tables),
adamc@354 123 Where : sql_exp tables [] [] bool,
adamc@354 124 GroupBy : sql_subset tables grouped,
adamc@354 125 Having : sql_exp grouped tables [] bool,
adamc@354 126 SelectFields : sql_subset grouped selectedFields,
adamc@354 127 SelectExps : $(fold (fn nm (t :: Type) acc [[nm] ~ acc] =>
adamc@354 128 [nm = sql_exp grouped tables [] t]
adamc@354 129 ++ acc) [] selectedExps) }
adamc@354 130 -> sql_query1 tables selectedFields selectedExps
adamc@229 131
adamc@229 132 type sql_relop
adamc@229 133 val sql_union : sql_relop
adamc@229 134 val sql_intersect : sql_relop
adamc@229 135 val sql_except : sql_relop
adamc@260 136 val sql_relop : tables1 ::: {{Type}}
adamc@354 137 -> tables2 ::: {{Type}}
adamc@354 138 -> selectedFields ::: {{Type}}
adamc@354 139 -> selectedExps ::: {Type}
adamc@354 140 -> sql_relop
adamc@354 141 -> sql_query1 tables1 selectedFields selectedExps
adamc@354 142 -> sql_query1 tables2 selectedFields selectedExps
adamc@354 143 -> sql_query1 selectedFields selectedFields selectedExps
adamc@229 144
adamc@230 145 type sql_direction
adamc@230 146 val sql_asc : sql_direction
adamc@230 147 val sql_desc : sql_direction
adamc@230 148
adamc@234 149 con sql_order_by :: {{Type}} -> {Type} -> Type
adamc@234 150 val sql_order_by_Nil : tables ::: {{Type}} -> exps :: {Type} -> sql_order_by tables exps
adamc@234 151 val sql_order_by_Cons : tables ::: {{Type}} -> exps ::: {Type} -> t ::: Type
adamc@354 152 -> sql_exp tables [] exps t -> sql_direction
adamc@354 153 -> sql_order_by tables exps
adamc@354 154 -> sql_order_by tables exps
adamc@230 155
adamc@231 156 type sql_limit
adamc@231 157 val sql_no_limit : sql_limit
adamc@231 158 val sql_limit : int -> sql_limit
adamc@354 159
adamc@232 160 type sql_offset
adamc@232 161 val sql_no_offset : sql_offset
adamc@232 162 val sql_offset : int -> sql_offset
adamc@232 163
adamc@229 164 val sql_query : tables ::: {{Type}}
adamc@354 165 -> selectedFields ::: {{Type}}
adamc@354 166 -> selectedExps ::: {Type}
adamc@354 167 -> {Rows : sql_query1 tables selectedFields selectedExps,
adamc@354 168 OrderBy : sql_order_by tables selectedExps,
adamc@354 169 Limit : sql_limit,
adamc@354 170 Offset : sql_offset}
adamc@354 171 -> sql_query selectedFields selectedExps
adamc@204 172
adamc@354 173 val sql_field : otherTabs ::: {{Type}} -> otherFields ::: {Type}
adamc@354 174 -> fieldType ::: Type -> agg ::: {{Type}}
adamc@354 175 -> exps ::: {Type}
adamc@354 176 -> tab :: Name -> field :: Name
adamc@354 177 -> sql_exp
adamc@354 178 ([tab = [field = fieldType] ++ otherFields] ++ otherTabs)
adamc@354 179 agg exps fieldType
adamc@234 180
adamc@354 181 val sql_exp : tabs ::: {{Type}} -> agg ::: {{Type}} -> t ::: Type -> rest ::: {Type}
adamc@354 182 -> nm :: Name
adamc@354 183 -> sql_exp tabs agg ([nm = t] ++ rest) t
adamc@209 184
adamc@221 185 class sql_injectable
adamc@221 186 val sql_bool : sql_injectable bool
adamc@221 187 val sql_int : sql_injectable int
adamc@221 188 val sql_float : sql_injectable float
adamc@221 189 val sql_string : sql_injectable string
adamc@437 190 val sql_time : sql_injectable time
adamc@354 191 val sql_inject : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@354 192 -> t ::: Type
adamc@354 193 -> sql_injectable t -> t -> sql_exp tables agg exps t
adamc@209 194
adamc@220 195 con sql_unary :: Type -> Type -> Type
adamc@220 196 val sql_not : sql_unary bool bool
adamc@354 197 val sql_unary : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@354 198 -> arg ::: Type -> res ::: Type
adamc@354 199 -> sql_unary arg res -> sql_exp tables agg exps arg
adamc@354 200 -> sql_exp tables agg exps res
adamc@220 201
adamc@220 202 con sql_binary :: Type -> Type -> Type -> Type
adamc@220 203 val sql_and : sql_binary bool bool bool
adamc@220 204 val sql_or : sql_binary bool bool bool
adamc@234 205 val sql_binary : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@354 206 -> arg1 ::: Type -> arg2 ::: Type -> res ::: Type
adamc@354 207 -> sql_binary arg1 arg2 res -> sql_exp tables agg exps arg1
adamc@354 208 -> sql_exp tables agg exps arg2
adamc@354 209 -> sql_exp tables agg exps res
adamc@220 210
adamc@219 211 type sql_comparison
adamc@219 212 val sql_eq : sql_comparison
adamc@219 213 val sql_ne : sql_comparison
adamc@219 214 val sql_lt : sql_comparison
adamc@219 215 val sql_le : sql_comparison
adamc@219 216 val sql_gt : sql_comparison
adamc@219 217 val sql_ge : sql_comparison
adamc@253 218 val sql_comparison : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@236 219 -> t ::: Type
adamc@253 220 -> sql_comparison
adamc@234 221 -> sql_exp tables agg exps t -> sql_exp tables agg exps t
adamc@234 222 -> sql_exp tables agg exps bool
adamc@203 223
adamc@235 224 val sql_count : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@354 225 -> unit -> sql_exp tables agg exps int
adamc@235 226
adamc@236 227 con sql_aggregate :: Type -> Type
adamc@354 228 val sql_aggregate : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@354 229 -> t ::: Type
adamc@354 230 -> sql_aggregate t -> sql_exp agg agg exps t
adamc@354 231 -> sql_exp tables agg exps t
adamc@236 232
adamc@236 233 class sql_summable
adamc@236 234 val sql_summable_int : sql_summable int
adamc@236 235 val sql_summable_float : sql_summable float
adamc@236 236 val sql_avg : t ::: Type -> sql_summable t -> sql_aggregate t
adamc@236 237 val sql_sum : t ::: Type -> sql_summable t -> sql_aggregate t
adamc@236 238
adamc@236 239 class sql_maxable
adamc@236 240 val sql_maxable_int : sql_maxable int
adamc@236 241 val sql_maxable_float : sql_maxable float
adamc@236 242 val sql_maxable_string : sql_maxable string
adamc@437 243 val sql_maxable_time : sql_maxable time
adamc@236 244 val sql_max : t ::: Type -> sql_maxable t -> sql_aggregate t
adamc@236 245 val sql_min : t ::: Type -> sql_maxable t -> sql_aggregate t
adamc@236 246
adamc@441 247 con sql_nfunc :: Type -> Type
adamc@441 248 val sql_nfunc : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@441 249 -> t ::: Type
adamc@441 250 -> sql_nfunc t -> sql_exp tables agg exps t
adamc@441 251 val sql_current_timestamp : sql_nfunc time
adamc@441 252
adamc@235 253
adamc@243 254 (*** Executing queries *)
adamc@243 255
adamc@354 256 val query : tables ::: {{Type}} -> exps ::: {Type}
adamc@354 257 -> fn [tables ~ exps] =>
adamc@354 258 state ::: Type
adamc@354 259 -> sql_query tables exps
adamc@356 260 -> ($(exps ++ fold (fn nm (fields :: {Type}) acc [[nm] ~ acc] =>
adamc@354 261 [nm = $fields] ++ acc) [] tables)
adamc@354 262 -> state
adamc@354 263 -> transaction state)
adamc@354 264 -> state
adamc@354 265 -> transaction state
adamc@243 266
adamc@243 267
adamc@299 268 (*** Database mutators *)
adamc@299 269
adamc@299 270 type dml
adamc@299 271 val dml : dml -> transaction unit
adamc@299 272
adamc@299 273 val insert : fields ::: {Type}
adamc@354 274 -> sql_table fields
adamc@354 275 -> $(fold (fn nm (t :: Type) acc [[nm] ~ acc] =>
adamc@354 276 [nm = sql_exp [] [] [] t] ++ acc)
adamc@354 277 [] fields)
adamc@354 278 -> dml
adamc@299 279
adamc@403 280 val update : unchanged ::: {Type} -> changed :: {Type} ->
adamc@354 281 fn [changed ~ unchanged] =>
adamc@354 282 $(fold (fn nm (t :: Type) acc [[nm] ~ acc] =>
adamc@354 283 [nm = sql_exp [T = changed ++ unchanged] [] [] t]
adamc@354 284 ++ acc)
adamc@354 285 [] changed)
adamc@354 286 -> sql_table (changed ++ unchanged)
adamc@354 287 -> sql_exp [T = changed ++ unchanged] [] [] bool
adamc@354 288 -> dml
adamc@299 289
adamc@299 290 val delete : fields ::: {Type}
adamc@354 291 -> sql_table fields
adamc@354 292 -> sql_exp [T = fields] [] [] bool
adamc@354 293 -> dml
adamc@299 294
adamc@338 295 (*** Sequences *)
adamc@338 296
adamc@338 297 type sql_sequence
adamc@338 298 val nextval : sql_sequence -> transaction int
adamc@338 299
adamc@299 300
adamc@203 301 (** XML *)
adamc@203 302
adamc@139 303 con tag :: {Type} -> {Unit} -> {Unit} -> {Type} -> {Type} -> Type
adamc@91 304
adamc@91 305
adamc@139 306 con xml :: {Unit} -> {Type} -> {Type} -> Type
adamc@141 307 val cdata : ctx ::: {Unit} -> use ::: {Type} -> string -> xml ctx use []
adamc@354 308 val tag : attrsGiven ::: {Type} -> attrsAbsent ::: {Type}
adamc@354 309 -> ctxOuter ::: {Unit} -> ctxInner ::: {Unit}
adamc@354 310 -> useOuter ::: {Type} -> useInner ::: {Type}
adamc@354 311 -> bindOuter ::: {Type} -> bindInner ::: {Type}
adamc@354 312 -> fn [attrsGiven ~ attrsAbsent]
adamc@354 313 [useOuter ~ useInner]
adamc@354 314 [bindOuter ~ bindInner] =>
adamc@354 315 $attrsGiven
adamc@354 316 -> tag (attrsGiven ++ attrsAbsent)
adamc@354 317 ctxOuter ctxInner useOuter bindOuter
adamc@354 318 -> xml ctxInner useInner bindInner
adamc@354 319 -> xml ctxOuter (useOuter ++ useInner) (bindOuter ++ bindInner)
adamc@140 320 val join : ctx ::: {Unit}
adamc@139 321 -> use1 ::: {Type} -> bind1 ::: {Type} -> bind2 ::: {Type}
adamc@354 322 -> fn [use1 ~ bind1] [bind1 ~ bind2] =>
adamc@354 323 xml ctx use1 bind1
adamc@354 324 -> xml ctx (use1 ++ bind1) bind2
adamc@354 325 -> xml ctx use1 (bind1 ++ bind2)
adamc@354 326 val useMore : ctx ::: {Unit} -> use1 ::: {Type} -> use2 ::: {Type}
adamc@354 327 -> bind ::: {Type}
adamc@354 328 -> fn [use1 ~ use2] =>
adamc@354 329 xml ctx use1 bind
adamc@354 330 -> xml ctx (use1 ++ use2) bind
adamc@91 331
adamc@110 332 con xhtml = xml [Html]
adamc@139 333 con page = xhtml [] []
adamc@325 334 con xbody = xml [Body] [] []
adamc@326 335 con xtr = xml [Body, Tr] [] []
adamc@361 336 con xform = xml [Body, Form] [] []
adamc@110 337
adamc@204 338 (*** HTML details *)
adamc@204 339
adamc@140 340 con html = [Html]
adamc@140 341 con head = [Head]
adamc@140 342 con body = [Body]
adamc@361 343 con form = [Body, Form]
adamc@332 344 con tabl = [Body, Table]
adamc@332 345 con tr = [Body, Tr]
adamc@93 346
adamc@140 347 val head : unit -> tag [] html head [] []
adamc@140 348 val title : unit -> tag [] head [] [] []
adamc@110 349
adamc@140 350 val body : unit -> tag [] html body [] []
adamc@354 351 con bodyTag = fn (attrs :: {Type}) =>
adamc@354 352 ctx ::: {Unit} ->
adamc@354 353 fn [[Body] ~ ctx] =>
adamc@354 354 unit -> tag attrs ([Body] ++ ctx) ([Body] ++ ctx) [] []
adamc@354 355 con bodyTagStandalone = fn (attrs :: {Type}) =>
adamc@354 356 ctx ::: {Unit}
adamc@354 357 -> fn [[Body] ~ ctx] =>
adamc@354 358 unit -> tag attrs ([Body] ++ ctx) [] [] []
adamc@141 359
adamc@141 360 val br : bodyTagStandalone []
adamc@119 361
adamc@140 362 val p : bodyTag []
adamc@140 363 val b : bodyTag []
adamc@140 364 val i : bodyTag []
adamc@407 365 val tt : bodyTag []
adamc@140 366 val font : bodyTag [Size = int, Face = string]
adamc@140 367
adamc@140 368 val h1 : bodyTag []
adamc@443 369 val h2 : bodyTag []
adamc@443 370 val h3 : bodyTag []
adamc@443 371 val h4 : bodyTag []
adamc@140 372 val li : bodyTag []
adamc@140 373
adamc@410 374 val hr : bodyTag []
adamc@410 375
adamc@280 376 val a : bodyTag [Link = transaction page]
adamc@140 377
adamc@361 378 val form : ctx ::: {Unit} -> bind ::: {Type}
adamc@354 379 -> fn [[Body] ~ ctx] =>
adamc@354 380 xml form [] bind
adamc@354 381 -> xml ([Body] ++ ctx) [] []
adamc@361 382 con formTag = fn (ty :: Type) (inner :: {Unit}) (attrs :: {Type}) =>
adamc@354 383 ctx ::: {Unit}
adamc@361 384 -> fn [[Form] ~ ctx] =>
adamc@354 385 nm :: Name -> unit
adamc@361 386 -> tag attrs ([Form] ++ ctx) inner [] [nm = ty]
adamc@444 387 val textbox : formTag string [] [Value = string, Size = int]
adamc@444 388 val password : formTag string [] [Value = string, Size = int]
adamc@444 389 val textarea : formTag string [] [Rows = int, Cols = int]
adamc@153 390
adamc@361 391 val checkbox : formTag bool [] [Checked = bool]
adamc@190 392
adamc@153 393 con radio = [Body, Radio]
adamc@361 394 val radio : formTag string radio []
adamc@153 395 val radioOption : unit -> tag [Value = string] radio [] [] []
adamc@142 396
adamc@154 397 con select = [Select]
adamc@361 398 val select : formTag string select []
adamc@422 399 val option : unit -> tag [Value = string, Selected = bool] select [] [] []
adamc@154 400
adamc@354 401 val submit : ctx ::: {Unit} -> use ::: {Type}
adamc@361 402 -> fn [[Form] ~ ctx] =>
adamc@354 403 unit
adamc@406 404 -> tag [Value = string, Action = $use -> transaction page]
adamc@361 405 ([Form] ++ ctx) ([Form] ++ ctx) use []
adamc@283 406
adamc@325 407 (*** Tables *)
adamc@325 408
adamc@406 409 val tabl : other ::: {Unit} -> fn [other ~ [Body, Table]] =>
adamc@406 410 unit -> tag [Border = int] ([Body] ++ other) ([Body, Table] ++ other) [] []
adamc@406 411 val tr : other ::: {Unit} -> fn [other ~ [Body, Table, Tr]] =>
adamc@406 412 unit -> tag [] ([Body, Table] ++ other) ([Body, Tr] ++ other) [] []
adamc@406 413 val th : other ::: {Unit} -> fn [other ~ [Body, Tr]] =>
adamc@406 414 unit -> tag [] ([Body, Tr] ++ other) ([Body] ++ other) [] []
adamc@406 415 val td : other ::: {Unit} -> fn [other ~ [Body, Tr]] =>
adamc@406 416 unit -> tag [] ([Body, Tr] ++ other) ([Body] ++ other) [] []
adamc@325 417
adamc@283 418
adamc@283 419 (** Aborting *)
adamc@283 420
adamc@283 421 val error : t ::: Type -> xml [Body] [] [] -> t