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Start of JsComp
author Adam Chlipala <adamc@hcoop.net>
date Sat, 20 Dec 2008 14:19:21 -0500
parents a152905c3c3b
children 55fc747a67dc
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@565 88
adamc@565 89 con signal :: Type -> Type
adamc@565 90 val signal_monad : monad signal
adamc@565 91 val signal : t ::: Type -> source t -> signal t
adamc@456 92
adamc@456 93
adamc@456 94 (** HTTP operations *)
adamc@456 95
adamc@456 96 val requestHeader : string -> transaction (option string)
adamc@456 97
adamc@459 98 con http_cookie :: Type -> Type
adamc@459 99 val getCookie : t ::: Type -> http_cookie t -> transaction (option t)
adamc@459 100 val setCookie : t ::: Type -> http_cookie t -> t -> transaction unit
adamc@459 101
adamc@456 102
adamc@566 103 (** JavaScript-y gadgets *)
adamc@566 104
adamc@566 105 val alert : string -> transaction unit
adamc@566 106
adamc@566 107
adamc@203 108 (** SQL *)
adamc@203 109
adamc@203 110 con sql_table :: {Type} -> Type
adamc@203 111
adamc@204 112 (*** Queries *)
adamc@204 113
adamc@233 114 con sql_query :: {{Type}} -> {Type} -> Type
adamc@233 115 con sql_query1 :: {{Type}} -> {{Type}} -> {Type} -> Type
adamc@234 116 con sql_exp :: {{Type}} -> {{Type}} -> {Type} -> Type -> Type
adamc@204 117
adamc@223 118 con sql_subset :: {{Type}} -> {{Type}} -> Type
adamc@223 119 val sql_subset : keep_drop :: {({Type} * {Type})}
adamc@354 120 -> sql_subset
adamc@354 121 (fold (fn nm (fields :: ({Type} * {Type}))
adamc@354 122 acc [[nm] ~ acc]
adamc@354 123 [fields.1 ~ fields.2] =>
adamc@354 124 [nm = fields.1 ++ fields.2]
adamc@354 125 ++ acc) [] keep_drop)
adamc@354 126 (fold (fn nm (fields :: ({Type} * {Type}))
adamc@354 127 acc [[nm] ~ acc] =>
adamc@354 128 [nm = fields.1] ++ acc)
adamc@354 129 [] keep_drop)
adamc@354 130 val sql_subset_all : tables :: {{Type}} -> sql_subset tables tables
adamc@223 131
adamc@229 132 val sql_query1 : tables ::: {{Type}}
adamc@354 133 -> grouped ::: {{Type}}
adamc@354 134 -> selectedFields ::: {{Type}}
adamc@354 135 -> selectedExps ::: {Type}
adamc@354 136 -> {From : $(fold (fn nm (fields :: {Type}) acc [[nm] ~ acc] =>
adamc@354 137 [nm = sql_table fields] ++ acc)
adamc@354 138 [] tables),
adamc@354 139 Where : sql_exp tables [] [] bool,
adamc@354 140 GroupBy : sql_subset tables grouped,
adamc@354 141 Having : sql_exp grouped tables [] bool,
adamc@354 142 SelectFields : sql_subset grouped selectedFields,
adamc@354 143 SelectExps : $(fold (fn nm (t :: Type) acc [[nm] ~ acc] =>
adamc@354 144 [nm = sql_exp grouped tables [] t]
adamc@354 145 ++ acc) [] selectedExps) }
adamc@354 146 -> sql_query1 tables selectedFields selectedExps
adamc@229 147
adamc@229 148 type sql_relop
adamc@229 149 val sql_union : sql_relop
adamc@229 150 val sql_intersect : sql_relop
adamc@229 151 val sql_except : sql_relop
adamc@260 152 val sql_relop : tables1 ::: {{Type}}
adamc@354 153 -> tables2 ::: {{Type}}
adamc@354 154 -> selectedFields ::: {{Type}}
adamc@354 155 -> selectedExps ::: {Type}
adamc@354 156 -> sql_relop
adamc@354 157 -> sql_query1 tables1 selectedFields selectedExps
adamc@354 158 -> sql_query1 tables2 selectedFields selectedExps
adamc@354 159 -> sql_query1 selectedFields selectedFields selectedExps
adamc@229 160
adamc@230 161 type sql_direction
adamc@230 162 val sql_asc : sql_direction
adamc@230 163 val sql_desc : sql_direction
adamc@230 164
adamc@234 165 con sql_order_by :: {{Type}} -> {Type} -> Type
adamc@234 166 val sql_order_by_Nil : tables ::: {{Type}} -> exps :: {Type} -> sql_order_by tables exps
adamc@234 167 val sql_order_by_Cons : tables ::: {{Type}} -> exps ::: {Type} -> t ::: Type
adamc@354 168 -> sql_exp tables [] exps t -> sql_direction
adamc@354 169 -> sql_order_by tables exps
adamc@354 170 -> sql_order_by tables exps
adamc@230 171
adamc@231 172 type sql_limit
adamc@231 173 val sql_no_limit : sql_limit
adamc@231 174 val sql_limit : int -> sql_limit
adamc@354 175
adamc@232 176 type sql_offset
adamc@232 177 val sql_no_offset : sql_offset
adamc@232 178 val sql_offset : int -> sql_offset
adamc@232 179
adamc@229 180 val sql_query : tables ::: {{Type}}
adamc@354 181 -> selectedFields ::: {{Type}}
adamc@354 182 -> selectedExps ::: {Type}
adamc@354 183 -> {Rows : sql_query1 tables selectedFields selectedExps,
adamc@354 184 OrderBy : sql_order_by tables selectedExps,
adamc@354 185 Limit : sql_limit,
adamc@354 186 Offset : sql_offset}
adamc@354 187 -> sql_query selectedFields selectedExps
adamc@204 188
adamc@354 189 val sql_field : otherTabs ::: {{Type}} -> otherFields ::: {Type}
adamc@354 190 -> fieldType ::: Type -> agg ::: {{Type}}
adamc@354 191 -> exps ::: {Type}
adamc@354 192 -> tab :: Name -> field :: Name
adamc@354 193 -> sql_exp
adamc@354 194 ([tab = [field = fieldType] ++ otherFields] ++ otherTabs)
adamc@354 195 agg exps fieldType
adamc@234 196
adamc@354 197 val sql_exp : tabs ::: {{Type}} -> agg ::: {{Type}} -> t ::: Type -> rest ::: {Type}
adamc@354 198 -> nm :: Name
adamc@354 199 -> sql_exp tabs agg ([nm = t] ++ rest) t
adamc@209 200
adamc@221 201 class sql_injectable
adamc@221 202 val sql_bool : sql_injectable bool
adamc@221 203 val sql_int : sql_injectable int
adamc@221 204 val sql_float : sql_injectable float
adamc@221 205 val sql_string : sql_injectable string
adamc@437 206 val sql_time : sql_injectable time
adamc@467 207 val sql_option_bool : sql_injectable (option bool)
adamc@467 208 val sql_option_int : sql_injectable (option int)
adamc@467 209 val sql_option_float : sql_injectable (option float)
adamc@467 210 val sql_option_string : sql_injectable (option string)
adamc@467 211 val sql_option_time : sql_injectable (option time)
adamc@354 212 val sql_inject : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@354 213 -> t ::: Type
adamc@354 214 -> sql_injectable t -> t -> sql_exp tables agg exps t
adamc@209 215
adamc@470 216 val sql_is_null : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@470 217 -> t ::: Type
adamc@470 218 -> sql_exp tables agg exps (option t)
adamc@470 219 -> sql_exp tables agg exps bool
adamc@470 220
adamc@559 221 class sql_arith
adamc@559 222 val sql_int_arith : sql_arith int
adamc@559 223 val sql_float_arith : sql_arith float
adamc@559 224
adamc@220 225 con sql_unary :: Type -> Type -> Type
adamc@220 226 val sql_not : sql_unary bool bool
adamc@354 227 val sql_unary : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@354 228 -> arg ::: Type -> res ::: Type
adamc@354 229 -> sql_unary arg res -> sql_exp tables agg exps arg
adamc@354 230 -> sql_exp tables agg exps res
adamc@220 231
adamc@559 232 val sql_neg : t ::: Type -> sql_arith t -> sql_unary t t
adamc@559 233
adamc@220 234 con sql_binary :: Type -> Type -> Type -> Type
adamc@220 235 val sql_and : sql_binary bool bool bool
adamc@220 236 val sql_or : sql_binary bool bool bool
adamc@234 237 val sql_binary : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@354 238 -> arg1 ::: Type -> arg2 ::: Type -> res ::: Type
adamc@354 239 -> sql_binary arg1 arg2 res -> sql_exp tables agg exps arg1
adamc@354 240 -> sql_exp tables agg exps arg2
adamc@354 241 -> sql_exp tables agg exps res
adamc@220 242
adamc@559 243 val sql_plus : t ::: Type -> sql_arith t -> sql_binary t t t
adamc@559 244 val sql_minus : t ::: Type -> sql_arith t -> sql_binary t t t
adamc@559 245 val sql_times : t ::: Type -> sql_arith t -> sql_binary t t t
adamc@559 246 val sql_div : t ::: Type -> sql_arith t -> sql_binary t t t
adamc@559 247 val sql_mod : sql_binary int int int
adamc@559 248
adamc@559 249 val sql_eq : t ::: Type -> sql_binary t t bool
adamc@559 250 val sql_ne : t ::: Type -> sql_binary t t bool
adamc@559 251 val sql_lt : t ::: Type -> sql_binary t t bool
adamc@559 252 val sql_le : t ::: Type -> sql_binary t t bool
adamc@559 253 val sql_gt : t ::: Type -> sql_binary t t bool
adamc@559 254 val sql_ge : t ::: Type -> sql_binary t t bool
adamc@203 255
adamc@235 256 val sql_count : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@544 257 -> sql_exp tables agg exps int
adamc@235 258
adamc@236 259 con sql_aggregate :: Type -> Type
adamc@354 260 val sql_aggregate : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@354 261 -> t ::: Type
adamc@354 262 -> sql_aggregate t -> sql_exp agg agg exps t
adamc@354 263 -> sql_exp tables agg exps t
adamc@236 264
adamc@236 265 class sql_summable
adamc@236 266 val sql_summable_int : sql_summable int
adamc@236 267 val sql_summable_float : sql_summable float
adamc@236 268 val sql_avg : t ::: Type -> sql_summable t -> sql_aggregate t
adamc@236 269 val sql_sum : t ::: Type -> sql_summable t -> sql_aggregate t
adamc@236 270
adamc@236 271 class sql_maxable
adamc@236 272 val sql_maxable_int : sql_maxable int
adamc@236 273 val sql_maxable_float : sql_maxable float
adamc@236 274 val sql_maxable_string : sql_maxable string
adamc@437 275 val sql_maxable_time : sql_maxable time
adamc@236 276 val sql_max : t ::: Type -> sql_maxable t -> sql_aggregate t
adamc@236 277 val sql_min : t ::: Type -> sql_maxable t -> sql_aggregate t
adamc@236 278
adamc@441 279 con sql_nfunc :: Type -> Type
adamc@441 280 val sql_nfunc : tables ::: {{Type}} -> agg ::: {{Type}} -> exps ::: {Type}
adamc@441 281 -> t ::: Type
adamc@441 282 -> sql_nfunc t -> sql_exp tables agg exps t
adamc@441 283 val sql_current_timestamp : sql_nfunc time
adamc@441 284
adamc@235 285
adamc@243 286 (*** Executing queries *)
adamc@243 287
adamc@354 288 val query : tables ::: {{Type}} -> exps ::: {Type}
adamc@354 289 -> fn [tables ~ exps] =>
adamc@354 290 state ::: Type
adamc@354 291 -> sql_query tables exps
adamc@356 292 -> ($(exps ++ fold (fn nm (fields :: {Type}) acc [[nm] ~ acc] =>
adamc@354 293 [nm = $fields] ++ acc) [] tables)
adamc@354 294 -> state
adamc@354 295 -> transaction state)
adamc@354 296 -> state
adamc@354 297 -> transaction state
adamc@243 298
adamc@243 299
adamc@299 300 (*** Database mutators *)
adamc@299 301
adamc@299 302 type dml
adamc@299 303 val dml : dml -> transaction unit
adamc@299 304
adamc@299 305 val insert : fields ::: {Type}
adamc@354 306 -> sql_table fields
adamc@354 307 -> $(fold (fn nm (t :: Type) acc [[nm] ~ acc] =>
adamc@354 308 [nm = sql_exp [] [] [] t] ++ acc)
adamc@354 309 [] fields)
adamc@354 310 -> dml
adamc@299 311
adamc@403 312 val update : unchanged ::: {Type} -> changed :: {Type} ->
adamc@354 313 fn [changed ~ unchanged] =>
adamc@354 314 $(fold (fn nm (t :: Type) acc [[nm] ~ acc] =>
adamc@354 315 [nm = sql_exp [T = changed ++ unchanged] [] [] t]
adamc@354 316 ++ acc)
adamc@354 317 [] changed)
adamc@354 318 -> sql_table (changed ++ unchanged)
adamc@354 319 -> sql_exp [T = changed ++ unchanged] [] [] bool
adamc@354 320 -> dml
adamc@299 321
adamc@299 322 val delete : fields ::: {Type}
adamc@354 323 -> sql_table fields
adamc@354 324 -> sql_exp [T = fields] [] [] bool
adamc@354 325 -> dml
adamc@299 326
adamc@338 327 (*** Sequences *)
adamc@338 328
adamc@338 329 type sql_sequence
adamc@338 330 val nextval : sql_sequence -> transaction int
adamc@338 331
adamc@299 332
adamc@203 333 (** XML *)
adamc@203 334
adamc@139 335 con tag :: {Type} -> {Unit} -> {Unit} -> {Type} -> {Type} -> Type
adamc@91 336
adamc@91 337
adamc@139 338 con xml :: {Unit} -> {Type} -> {Type} -> Type
adamc@141 339 val cdata : ctx ::: {Unit} -> use ::: {Type} -> string -> xml ctx use []
adamc@354 340 val tag : attrsGiven ::: {Type} -> attrsAbsent ::: {Type}
adamc@354 341 -> ctxOuter ::: {Unit} -> ctxInner ::: {Unit}
adamc@354 342 -> useOuter ::: {Type} -> useInner ::: {Type}
adamc@354 343 -> bindOuter ::: {Type} -> bindInner ::: {Type}
adamc@354 344 -> fn [attrsGiven ~ attrsAbsent]
adamc@354 345 [useOuter ~ useInner]
adamc@354 346 [bindOuter ~ bindInner] =>
adamc@354 347 $attrsGiven
adamc@354 348 -> tag (attrsGiven ++ attrsAbsent)
adamc@354 349 ctxOuter ctxInner useOuter bindOuter
adamc@354 350 -> xml ctxInner useInner bindInner
adamc@354 351 -> xml ctxOuter (useOuter ++ useInner) (bindOuter ++ bindInner)
adamc@140 352 val join : ctx ::: {Unit}
adamc@139 353 -> use1 ::: {Type} -> bind1 ::: {Type} -> bind2 ::: {Type}
adamc@354 354 -> fn [use1 ~ bind1] [bind1 ~ bind2] =>
adamc@354 355 xml ctx use1 bind1
adamc@354 356 -> xml ctx (use1 ++ bind1) bind2
adamc@354 357 -> xml ctx use1 (bind1 ++ bind2)
adamc@354 358 val useMore : ctx ::: {Unit} -> use1 ::: {Type} -> use2 ::: {Type}
adamc@354 359 -> bind ::: {Type}
adamc@354 360 -> fn [use1 ~ use2] =>
adamc@354 361 xml ctx use1 bind
adamc@354 362 -> xml ctx (use1 ++ use2) bind
adamc@91 363
adamc@110 364 con xhtml = xml [Html]
adamc@139 365 con page = xhtml [] []
adamc@325 366 con xbody = xml [Body] [] []
adamc@326 367 con xtr = xml [Body, Tr] [] []
adamc@361 368 con xform = xml [Body, Form] [] []
adamc@110 369
adamc@204 370 (*** HTML details *)
adamc@204 371
adamc@140 372 con html = [Html]
adamc@140 373 con head = [Head]
adamc@140 374 con body = [Body]
adamc@361 375 con form = [Body, Form]
adamc@332 376 con tabl = [Body, Table]
adamc@332 377 con tr = [Body, Tr]
adamc@93 378
adamc@140 379 val head : unit -> tag [] html head [] []
adamc@140 380 val title : unit -> tag [] head [] [] []
adamc@110 381
adamc@140 382 val body : unit -> tag [] html body [] []
adamc@354 383 con bodyTag = fn (attrs :: {Type}) =>
adamc@354 384 ctx ::: {Unit} ->
adamc@354 385 fn [[Body] ~ ctx] =>
adamc@354 386 unit -> tag attrs ([Body] ++ ctx) ([Body] ++ ctx) [] []
adamc@354 387 con bodyTagStandalone = fn (attrs :: {Type}) =>
adamc@354 388 ctx ::: {Unit}
adamc@354 389 -> fn [[Body] ~ ctx] =>
adamc@354 390 unit -> tag attrs ([Body] ++ ctx) [] [] []
adamc@141 391
adamc@141 392 val br : bodyTagStandalone []
adamc@119 393
adamc@140 394 val p : bodyTag []
adamc@140 395 val b : bodyTag []
adamc@140 396 val i : bodyTag []
adamc@407 397 val tt : bodyTag []
adamc@140 398 val font : bodyTag [Size = int, Face = string]
adamc@140 399
adamc@140 400 val h1 : bodyTag []
adamc@443 401 val h2 : bodyTag []
adamc@443 402 val h3 : bodyTag []
adamc@443 403 val h4 : bodyTag []
adamc@469 404
adamc@140 405 val li : bodyTag []
adamc@469 406 val ol : bodyTag []
adamc@469 407 val ul : bodyTag []
adamc@140 408
adamc@410 409 val hr : bodyTag []
adamc@410 410
adamc@566 411 val a : bodyTag [Link = transaction page, Onclick = transaction unit]
adamc@140 412
adamc@361 413 val form : ctx ::: {Unit} -> bind ::: {Type}
adamc@354 414 -> fn [[Body] ~ ctx] =>
adamc@354 415 xml form [] bind
adamc@354 416 -> xml ([Body] ++ ctx) [] []
adamc@361 417 con formTag = fn (ty :: Type) (inner :: {Unit}) (attrs :: {Type}) =>
adamc@354 418 ctx ::: {Unit}
adamc@361 419 -> fn [[Form] ~ ctx] =>
adamc@354 420 nm :: Name -> unit
adamc@361 421 -> tag attrs ([Form] ++ ctx) inner [] [nm = ty]
adamc@444 422 val textbox : formTag string [] [Value = string, Size = int]
adamc@444 423 val password : formTag string [] [Value = string, Size = int]
adamc@444 424 val textarea : formTag string [] [Rows = int, Cols = int]
adamc@153 425
adamc@361 426 val checkbox : formTag bool [] [Checked = bool]
adamc@190 427
adamc@153 428 con radio = [Body, Radio]
adamc@361 429 val radio : formTag string radio []
adamc@153 430 val radioOption : unit -> tag [Value = string] radio [] [] []
adamc@142 431
adamc@154 432 con select = [Select]
adamc@361 433 val select : formTag string select []
adamc@422 434 val option : unit -> tag [Value = string, Selected = bool] select [] [] []
adamc@154 435
adamc@354 436 val submit : ctx ::: {Unit} -> use ::: {Type}
adamc@361 437 -> fn [[Form] ~ ctx] =>
adamc@354 438 unit
adamc@406 439 -> tag [Value = string, Action = $use -> transaction page]
adamc@361 440 ([Form] ++ ctx) ([Form] ++ ctx) use []
adamc@283 441
adamc@325 442 (*** Tables *)
adamc@325 443
adamc@406 444 val tabl : other ::: {Unit} -> fn [other ~ [Body, Table]] =>
adamc@406 445 unit -> tag [Border = int] ([Body] ++ other) ([Body, Table] ++ other) [] []
adamc@406 446 val tr : other ::: {Unit} -> fn [other ~ [Body, Table, Tr]] =>
adamc@406 447 unit -> tag [] ([Body, Table] ++ other) ([Body, Tr] ++ other) [] []
adamc@406 448 val th : other ::: {Unit} -> fn [other ~ [Body, Tr]] =>
adamc@406 449 unit -> tag [] ([Body, Tr] ++ other) ([Body] ++ other) [] []
adamc@406 450 val td : other ::: {Unit} -> fn [other ~ [Body, Tr]] =>
adamc@406 451 unit -> tag [] ([Body, Tr] ++ other) ([Body] ++ other) [] []
adamc@325 452
adamc@283 453
adamc@283 454 (** Aborting *)
adamc@283 455
adamc@283 456 val error : t ::: Type -> xml [Body] [] [] -> t