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annotate lib/basis.urs @ 598:4c2c740c6931

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Hooking a source into an input
author Adam Chlipala <adamc@hcoop.net>
date Sun, 11 Jan 2009 10:05:06 -0500
parents 9f02f1765149
children 7c3c21eb5b4c
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@564 72 (** * Monads *)
adamc@564 73
adamc@564 74 class monad :: Type -> Type
adamc@564 75 val return : m ::: (Type -> Type) -> t ::: Type
adamc@564 76 -> monad m
adamc@564 77 -> t -> m t
adamc@564 78 val bind : m ::: (Type -> Type) -> t1 ::: Type -> t2 ::: Type
adamc@564 79 -> monad m
adamc@564 80 -> m t1 -> (t1 -> m t2)
adamc@564 81 -> m t2
adamc@564 82
adamc@456 83 con transaction :: Type -> Type
adamc@564 84 val transaction_monad : monad transaction
adamc@456 85
adamc@565 86 con source :: Type -> Type
adamc@565 87 val source : t ::: Type -> t -> transaction (source t)
adamc@575 88 val set : t ::: Type -> source t -> t -> transaction unit
adamc@565 89
adamc@565 90 con signal :: Type -> Type
adamc@565 91 val signal_monad : monad signal
adamc@565 92 val signal : t ::: Type -> source t -> signal t
adamc@456 93
adamc@456 94
adamc@456 95 (** HTTP operations *)
adamc@456 96
adamc@456 97 val requestHeader : string -> transaction (option string)
adamc@456 98
adamc@459 99 con http_cookie :: Type -> Type
adamc@459 100 val getCookie : t ::: Type -> http_cookie t -> transaction (option t)
adamc@459 101 val setCookie : t ::: Type -> http_cookie t -> t -> transaction unit
adamc@459 102
adamc@456 103
adamc@566 104 (** JavaScript-y gadgets *)
adamc@566 105
adamc@566 106 val alert : string -> transaction unit
adamc@566 107
adamc@566 108
adamc@203 109 (** SQL *)
adamc@203 110
adamc@203 111 con sql_table :: {Type} -> Type
adamc@203 112
adamc@204 113 (*** Queries *)
adamc@204 114
adamc@233 115 con sql_query :: {{Type}} -> {Type} -> Type
adamc@233 116 con sql_query1 :: {{Type}} -> {{Type}} -> {Type} -> Type
adamc@234 117 con sql_exp :: {{Type}} -> {{Type}} -> {Type} -> Type -> Type
adamc@204 118
adamc@223 119 con sql_subset :: {{Type}} -> {{Type}} -> Type
adamc@223 120 val sql_subset : keep_drop :: {({Type} * {Type})}
adamc@354 121 -> sql_subset
adamc@354 122 (fold (fn nm (fields :: ({Type} * {Type}))
adamc@354 123 acc [[nm] ~ acc]
adamc@354 124 [fields.1 ~ fields.2] =>
adamc@354 125 [nm = fields.1 ++ fields.2]
adamc@354 126 ++ acc) [] keep_drop)
adamc@354 127 (fold (fn nm (fields :: ({Type} * {Type}))
adamc@354 128 acc [[nm] ~ acc] =>
adamc@354 129 [nm = fields.1] ++ acc)
adamc@354 130 [] keep_drop)
adamc@354 131 val sql_subset_all : tables :: {{Type}} -> sql_subset tables tables
adamc@223 132
adamc@229 133 val sql_query1 : tables ::: {{Type}}
adamc@354 134 -> grouped ::: {{Type}}
adamc@354 135 -> selectedFields ::: {{Type}}
adamc@354 136 -> selectedExps ::: {Type}
adamc@354 137 -> {From : $(fold (fn nm (fields :: {Type}) acc [[nm] ~ acc] =>
adamc@354 138 [nm = sql_table fields] ++ acc)
adamc@354 139 [] tables),
adamc@354 140 Where : sql_exp tables [] [] bool,
adamc@354 141 GroupBy : sql_subset tables grouped,
adamc@354 142 Having : sql_exp grouped tables [] bool,
adamc@354 143 SelectFields : sql_subset grouped selectedFields,
adamc@354 144 SelectExps : $(fold (fn nm (t :: Type) acc [[nm] ~ acc] =>
adamc@354 145 [nm = sql_exp grouped tables [] t]
adamc@354 146 ++ acc) [] selectedExps) }
adamc@354 147 -> sql_query1 tables selectedFields selectedExps
adamc@229 148
adamc@229 149 type sql_relop
adamc@229 150 val sql_union : sql_relop
adamc@229 151 val sql_intersect : sql_relop
adamc@229 152 val sql_except : sql_relop
adamc@260 153 val sql_relop : tables1 ::: {{Type}}
adamc@354 154 -> tables2 ::: {{Type}}
adamc@354 155 -> selectedFields ::: {{Type}}
adamc@354 156 -> selectedExps ::: {Type}
adamc@354 157 -> sql_relop
adamc@354 158 -> sql_query1 tables1 selectedFields selectedExps
adamc@354 159 -> sql_query1 tables2 selectedFields selectedExps
adamc@354 160 -> sql_query1 selectedFields selectedFields selectedExps
adamc@229 161
adamc@230 162 type sql_direction
adamc@230 163 val sql_asc : sql_direction
adamc@230 164 val sql_desc : sql_direction
adamc@230 165
adamc@234 166 con sql_order_by :: {{Type}} -> {Type} -> Type
adamc@234 167 val sql_order_by_Nil : tables ::: {{Type}} -> exps :: {Type} -> sql_order_by tables exps
adamc@234 168 val sql_order_by_Cons : tables ::: {{Type}} -> exps ::: {Type} -> t ::: Type
adamc@354 169 -> sql_exp tables [] exps t -> sql_direction
adamc@354 170 -> sql_order_by tables exps
adamc@354 171 -> sql_order_by tables exps
adamc@230 172
adamc@231 173 type sql_limit
adamc@231 174 val sql_no_limit : sql_limit
adamc@231 175 val sql_limit : int -> sql_limit
adamc@354 176
adamc@232 177 type sql_offset
adamc@232 178 val sql_no_offset : sql_offset
adamc@232 179 val sql_offset : int -> sql_offset
adamc@232 180
adamc@229 181 val sql_query : tables ::: {{Type}}
adamc@354 182 -> selectedFields ::: {{Type}}
adamc@354 183 -> selectedExps ::: {Type}
adamc@354 184 -> {Rows : sql_query1 tables selectedFields selectedExps,
adamc@354 185 OrderBy : sql_order_by tables selectedExps,
adamc@354 186 Limit : sql_limit,
adamc@354 187 Offset : sql_offset}
adamc@354 188 -> sql_query selectedFields selectedExps
adamc@204 189
adamc@354 190 val sql_field : otherTabs ::: {{Type}} -> otherFields ::: {Type}
adamc@354 191 -> fieldType ::: Type -> agg ::: {{Type}}
adamc@354 192 -> exps ::: {Type}
adamc@354 193 -> tab :: Name -> field :: Name
adamc@354 194 -> sql_exp
adamc@354 195 ([tab = [field = fieldType] ++ otherFields] ++ otherTabs)
adamc@354 196 agg exps fieldType
adamc@234 197
adamc@354 198 val sql_exp : tabs ::: {{Type}} -> agg ::: {{Type}} -> t ::: Type -> rest ::: {Type}
adamc@354 199 -> nm :: Name
adamc@354 200 -> sql_exp tabs agg ([nm = t] ++ rest) t
adamc@209 201
adamc@221 202 class sql_injectable
adamc@221 203 val sql_bool : sql_injectable bool
adamc@221 204 val sql_int : sql_injectable int
adamc@221 205 val sql_float : sql_injectable float
adamc@221 206 val sql_string : sql_injectable string
adamc@437 207 val sql_time : sql_injectable time
adamc@467 208 val sql_option_bool : sql_injectable (option bool)
adamc@467 209 val sql_option_int : sql_injectable (option int)
adamc@467 210 val sql_option_float : sql_injectable (option float)
adamc@467 211 val sql_option_string : sql_injectable (option string)
adamc@467 212 val sql_option_time : sql_injectable (option time)
adamc@354 213 val sql_inject : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@354 214 -> t ::: Type
adamc@354 215 -> sql_injectable t -> t -> sql_exp tables agg exps t
adamc@209 216
adamc@470 217 val sql_is_null : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@470 218 -> t ::: Type
adamc@470 219 -> sql_exp tables agg exps (option t)
adamc@470 220 -> sql_exp tables agg exps bool
adamc@470 221
adamc@559 222 class sql_arith
adamc@559 223 val sql_int_arith : sql_arith int
adamc@559 224 val sql_float_arith : sql_arith float
adamc@559 225
adamc@220 226 con sql_unary :: Type -> Type -> Type
adamc@220 227 val sql_not : sql_unary bool bool
adamc@354 228 val sql_unary : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@354 229 -> arg ::: Type -> res ::: Type
adamc@354 230 -> sql_unary arg res -> sql_exp tables agg exps arg
adamc@354 231 -> sql_exp tables agg exps res
adamc@220 232
adamc@559 233 val sql_neg : t ::: Type -> sql_arith t -> sql_unary t t
adamc@559 234
adamc@220 235 con sql_binary :: Type -> Type -> Type -> Type
adamc@220 236 val sql_and : sql_binary bool bool bool
adamc@220 237 val sql_or : sql_binary bool bool bool
adamc@234 238 val sql_binary : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@354 239 -> arg1 ::: Type -> arg2 ::: Type -> res ::: Type
adamc@354 240 -> sql_binary arg1 arg2 res -> sql_exp tables agg exps arg1
adamc@354 241 -> sql_exp tables agg exps arg2
adamc@354 242 -> sql_exp tables agg exps res
adamc@220 243
adamc@559 244 val sql_plus : t ::: Type -> sql_arith t -> sql_binary t t t
adamc@559 245 val sql_minus : t ::: Type -> sql_arith t -> sql_binary t t t
adamc@559 246 val sql_times : t ::: Type -> sql_arith t -> sql_binary t t t
adamc@559 247 val sql_div : t ::: Type -> sql_arith t -> sql_binary t t t
adamc@559 248 val sql_mod : sql_binary int int int
adamc@559 249
adamc@559 250 val sql_eq : t ::: Type -> sql_binary t t bool
adamc@559 251 val sql_ne : t ::: Type -> sql_binary t t bool
adamc@559 252 val sql_lt : t ::: Type -> sql_binary t t bool
adamc@559 253 val sql_le : t ::: Type -> sql_binary t t bool
adamc@559 254 val sql_gt : t ::: Type -> sql_binary t t bool
adamc@559 255 val sql_ge : t ::: Type -> sql_binary t t bool
adamc@203 256
adamc@235 257 val sql_count : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@544 258 -> sql_exp tables agg exps int
adamc@235 259
adamc@236 260 con sql_aggregate :: Type -> Type
adamc@354 261 val sql_aggregate : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@354 262 -> t ::: Type
adamc@354 263 -> sql_aggregate t -> sql_exp agg agg exps t
adamc@354 264 -> sql_exp tables agg exps t
adamc@236 265
adamc@236 266 class sql_summable
adamc@236 267 val sql_summable_int : sql_summable int
adamc@236 268 val sql_summable_float : sql_summable float
adamc@236 269 val sql_avg : t ::: Type -> sql_summable t -> sql_aggregate t
adamc@236 270 val sql_sum : t ::: Type -> sql_summable t -> sql_aggregate t
adamc@236 271
adamc@236 272 class sql_maxable
adamc@236 273 val sql_maxable_int : sql_maxable int
adamc@236 274 val sql_maxable_float : sql_maxable float
adamc@236 275 val sql_maxable_string : sql_maxable string
adamc@437 276 val sql_maxable_time : sql_maxable time
adamc@236 277 val sql_max : t ::: Type -> sql_maxable t -> sql_aggregate t
adamc@236 278 val sql_min : t ::: Type -> sql_maxable t -> sql_aggregate t
adamc@236 279
adamc@441 280 con sql_nfunc :: Type -> Type
adamc@441 281 val sql_nfunc : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@441 282 -> t ::: Type
adamc@441 283 -> sql_nfunc t -> sql_exp tables agg exps t
adamc@441 284 val sql_current_timestamp : sql_nfunc time
adamc@441 285
adamc@235 286
adamc@243 287 (*** Executing queries *)
adamc@243 288
adamc@354 289 val query : tables ::: {{Type}} -> exps ::: {Type}
adamc@354 290 -> fn [tables ~ exps] =>
adamc@354 291 state ::: Type
adamc@354 292 -> sql_query tables exps
adamc@356 293 -> ($(exps ++ fold (fn nm (fields :: {Type}) acc [[nm] ~ acc] =>
adamc@354 294 [nm = $fields] ++ acc) [] tables)
adamc@354 295 -> state
adamc@354 296 -> transaction state)
adamc@354 297 -> state
adamc@354 298 -> transaction state
adamc@243 299
adamc@243 300
adamc@299 301 (*** Database mutators *)
adamc@299 302
adamc@299 303 type dml
adamc@299 304 val dml : dml -> transaction unit
adamc@299 305
adamc@299 306 val insert : fields ::: {Type}
adamc@354 307 -> sql_table fields
adamc@354 308 -> $(fold (fn nm (t :: Type) acc [[nm] ~ acc] =>
adamc@354 309 [nm = sql_exp [] [] [] t] ++ acc)
adamc@354 310 [] fields)
adamc@354 311 -> dml
adamc@299 312
adamc@403 313 val update : unchanged ::: {Type} -> changed :: {Type} ->
adamc@354 314 fn [changed ~ unchanged] =>
adamc@354 315 $(fold (fn nm (t :: Type) acc [[nm] ~ acc] =>
adamc@354 316 [nm = sql_exp [T = changed ++ unchanged] [] [] t]
adamc@354 317 ++ acc)
adamc@354 318 [] changed)
adamc@354 319 -> sql_table (changed ++ unchanged)
adamc@354 320 -> sql_exp [T = changed ++ unchanged] [] [] bool
adamc@354 321 -> dml
adamc@299 322
adamc@299 323 val delete : fields ::: {Type}
adamc@354 324 -> sql_table fields
adamc@354 325 -> sql_exp [T = fields] [] [] bool
adamc@354 326 -> dml
adamc@299 327
adamc@338 328 (*** Sequences *)
adamc@338 329
adamc@338 330 type sql_sequence
adamc@338 331 val nextval : sql_sequence -> transaction int
adamc@338 332
adamc@299 333
adamc@203 334 (** XML *)
adamc@203 335
adamc@139 336 con tag :: {Type} -> {Unit} -> {Unit} -> {Type} -> {Type} -> Type
adamc@91 337
adamc@91 338
adamc@139 339 con xml :: {Unit} -> {Type} -> {Type} -> Type
adamc@141 340 val cdata : ctx ::: {Unit} -> use ::: {Type} -> string -> xml ctx use []
adamc@354 341 val tag : attrsGiven ::: {Type} -> attrsAbsent ::: {Type}
adamc@354 342 -> ctxOuter ::: {Unit} -> ctxInner ::: {Unit}
adamc@354 343 -> useOuter ::: {Type} -> useInner ::: {Type}
adamc@354 344 -> bindOuter ::: {Type} -> bindInner ::: {Type}
adamc@354 345 -> fn [attrsGiven ~ attrsAbsent]
adamc@354 346 [useOuter ~ useInner]
adamc@354 347 [bindOuter ~ bindInner] =>
adamc@354 348 $attrsGiven
adamc@354 349 -> tag (attrsGiven ++ attrsAbsent)
adamc@354 350 ctxOuter ctxInner useOuter bindOuter
adamc@354 351 -> xml ctxInner useInner bindInner
adamc@354 352 -> xml ctxOuter (useOuter ++ useInner) (bindOuter ++ bindInner)
adamc@140 353 val join : ctx ::: {Unit}
adamc@139 354 -> use1 ::: {Type} -> bind1 ::: {Type} -> bind2 ::: {Type}
adamc@354 355 -> fn [use1 ~ bind1] [bind1 ~ bind2] =>
adamc@354 356 xml ctx use1 bind1
adamc@354 357 -> xml ctx (use1 ++ bind1) bind2
adamc@354 358 -> xml ctx use1 (bind1 ++ bind2)
adamc@354 359 val useMore : ctx ::: {Unit} -> use1 ::: {Type} -> use2 ::: {Type}
adamc@354 360 -> bind ::: {Type}
adamc@354 361 -> fn [use1 ~ use2] =>
adamc@354 362 xml ctx use1 bind
adamc@354 363 -> xml ctx (use1 ++ use2) bind
adamc@91 364
adamc@110 365 con xhtml = xml [Html]
adamc@139 366 con page = xhtml [] []
adamc@325 367 con xbody = xml [Body] [] []
adamc@326 368 con xtr = xml [Body, Tr] [] []
adamc@361 369 con xform = xml [Body, Form] [] []
adamc@110 370
adamc@204 371 (*** HTML details *)
adamc@204 372
adamc@140 373 con html = [Html]
adamc@140 374 con head = [Head]
adamc@140 375 con body = [Body]
adamc@361 376 con form = [Body, Form]
adamc@332 377 con tabl = [Body, Table]
adamc@332 378 con tr = [Body, Tr]
adamc@93 379
adamc@568 380 val dyn : ctx ::: {Unit} -> use ::: {Type} -> bind ::: {Type} -> unit
adamc@568 381 -> tag [Signal = signal (xml ctx use bind)] ctx [] use bind
adamc@568 382
adamc@140 383 val head : unit -> tag [] html head [] []
adamc@140 384 val title : unit -> tag [] head [] [] []
adamc@110 385
adamc@140 386 val body : unit -> tag [] html body [] []
adamc@354 387 con bodyTag = fn (attrs :: {Type}) =>
adamc@354 388 ctx ::: {Unit} ->
adamc@354 389 fn [[Body] ~ ctx] =>
adamc@354 390 unit -> tag attrs ([Body] ++ ctx) ([Body] ++ ctx) [] []
adamc@354 391 con bodyTagStandalone = fn (attrs :: {Type}) =>
adamc@354 392 ctx ::: {Unit}
adamc@354 393 -> fn [[Body] ~ ctx] =>
adamc@354 394 unit -> tag attrs ([Body] ++ ctx) [] [] []
adamc@141 395
adamc@141 396 val br : bodyTagStandalone []
adamc@119 397
adamc@140 398 val p : bodyTag []
adamc@140 399 val b : bodyTag []
adamc@140 400 val i : bodyTag []
adamc@407 401 val tt : bodyTag []
adamc@140 402 val font : bodyTag [Size = int, Face = string]
adamc@140 403
adamc@140 404 val h1 : bodyTag []
adamc@443 405 val h2 : bodyTag []
adamc@443 406 val h3 : bodyTag []
adamc@443 407 val h4 : bodyTag []
adamc@469 408
adamc@140 409 val li : bodyTag []
adamc@469 410 val ol : bodyTag []
adamc@469 411 val ul : bodyTag []
adamc@140 412
adamc@410 413 val hr : bodyTag []
adamc@410 414
adamc@566 415 val a : bodyTag [Link = transaction page, Onclick = transaction unit]
adamc@140 416
adamc@361 417 val form : ctx ::: {Unit} -> bind ::: {Type}
adamc@354 418 -> fn [[Body] ~ ctx] =>
adamc@354 419 xml form [] bind
adamc@354 420 -> xml ([Body] ++ ctx) [] []
adamc@361 421 con formTag = fn (ty :: Type) (inner :: {Unit}) (attrs :: {Type}) =>
adamc@354 422 ctx ::: {Unit}
adamc@361 423 -> fn [[Form] ~ ctx] =>
adamc@354 424 nm :: Name -> unit
adamc@361 425 -> tag attrs ([Form] ++ ctx) inner [] [nm = ty]
adamc@598 426 val textbox : formTag string [] [Value = string, Size = int, Source = source string]
adamc@444 427 val password : formTag string [] [Value = string, Size = int]
adamc@444 428 val textarea : formTag string [] [Rows = int, Cols = int]
adamc@153 429
adamc@361 430 val checkbox : formTag bool [] [Checked = bool]
adamc@190 431
adamc@153 432 con radio = [Body, Radio]
adamc@361 433 val radio : formTag string radio []
adamc@153 434 val radioOption : unit -> tag [Value = string] radio [] [] []
adamc@142 435
adamc@154 436 con select = [Select]
adamc@361 437 val select : formTag string select []
adamc@422 438 val option : unit -> tag [Value = string, Selected = bool] select [] [] []
adamc@154 439
adamc@568 440 val submit : ctx ::: {Unit} -> use ::: {Type}
adamc@361 441 -> fn [[Form] ~ ctx] =>
adamc@354 442 unit
adamc@406 443 -> tag [Value = string, Action = $use -> transaction page]
adamc@361 444 ([Form] ++ ctx) ([Form] ++ ctx) use []
adamc@283 445
adamc@325 446 (*** Tables *)
adamc@325 447
adamc@406 448 val tabl : other ::: {Unit} -> fn [other ~ [Body, Table]] =>
adamc@406 449 unit -> tag [Border = int] ([Body] ++ other) ([Body, Table] ++ other) [] []
adamc@406 450 val tr : other ::: {Unit} -> fn [other ~ [Body, Table, Tr]] =>
adamc@406 451 unit -> tag [] ([Body, Table] ++ other) ([Body, Tr] ++ other) [] []
adamc@406 452 val th : other ::: {Unit} -> fn [other ~ [Body, Tr]] =>
adamc@406 453 unit -> tag [] ([Body, Tr] ++ other) ([Body] ++ other) [] []
adamc@406 454 val td : other ::: {Unit} -> fn [other ~ [Body, Tr]] =>
adamc@406 455 unit -> tag [] ([Body, Tr] ++ other) ([Body] ++ other) [] []
adamc@325 456
adamc@283 457
adamc@283 458 (** Aborting *)
adamc@283 459
adamc@283 460 val error : t ::: Type -> xml [Body] [] [] -> t