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annotate src/jscomp.sml @ 586:1c969230ee7f

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author Adam Chlipala <adamc@hcoop.net>
date Thu, 01 Jan 2009 11:13:08 -0500
parents 35471f067980
children 4c899701bd28
rev   line source
adamc@567 1 (* Copyright (c) 2008, Adam Chlipala
adamc@567 2 * All rights reserved.
adamc@567 3 *
adamc@567 4 * Redistribution and use in source and binary forms, with or without
adamc@567 5 * modification, are permitted provided that the following conditions are met:
adamc@567 6 *
adamc@567 7 * - Redistributions of source code must retain the above copyright notice,
adamc@567 8 * this list of conditions and the following disclaimer.
adamc@567 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@567 10 * this list of conditions and the following disclaimer in the documentation
adamc@567 11 * and/or other materials provided with the distribution.
adamc@567 12 * - The names of contributors may not be used to endorse or promote products
adamc@567 13 * derived from this software without specific prior written permission.
adamc@567 14 *
adamc@567 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@567 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@567 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@567 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@567 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@567 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@567 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@567 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@567 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@567 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@567 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@567 26 *)
adamc@567 27
adamc@567 28 structure JsComp :> JSCOMP = struct
adamc@567 29
adamc@567 30 open Mono
adamc@567 31
adamc@567 32 structure EM = ErrorMsg
adamc@567 33 structure E = MonoEnv
adamc@567 34 structure U = MonoUtil
adamc@567 35
adamc@572 36 val funcs = [(("Basis", "alert"), "alert"),
adamc@586 37 (("Basis", "htmlifyBool"), "bs"),
adamc@583 38 (("Basis", "htmlifyFloat"), "ts"),
adamc@582 39 (("Basis", "htmlifyInt"), "ts"),
adamc@574 40 (("Basis", "htmlifyString"), "escape"),
adamc@579 41 (("Basis", "new_client_source"), "sc"),
adamc@579 42 (("Basis", "set_client_source"), "sv")]
adamc@572 43
adamc@572 44 structure FM = BinaryMapFn(struct
adamc@572 45 type ord_key = string * string
adamc@572 46 fun compare ((m1, x1), (m2, x2)) =
adamc@572 47 Order.join (String.compare (m1, m2),
adamc@572 48 fn () => String.compare (x1, x2))
adamc@572 49 end)
adamc@572 50
adamc@572 51 val funcs = foldl (fn ((k, v), m) => FM.insert (m, k, v)) FM.empty funcs
adamc@572 52
adamc@572 53 fun ffi k = FM.find (funcs, k)
adamc@572 54
adamc@567 55 type state = {
adamc@567 56 decls : decl list,
adamc@567 57 script : string
adamc@567 58 }
adamc@567 59
adamc@567 60 fun varDepth (e, _) =
adamc@567 61 case e of
adamc@567 62 EPrim _ => 0
adamc@567 63 | ERel _ => 0
adamc@567 64 | ENamed _ => 0
adamc@567 65 | ECon (_, _, NONE) => 0
adamc@567 66 | ECon (_, _, SOME e) => varDepth e
adamc@567 67 | ENone _ => 0
adamc@567 68 | ESome (_, e) => varDepth e
adamc@567 69 | EFfi _ => 0
adamc@567 70 | EFfiApp (_, _, es) => foldl Int.max 0 (map varDepth es)
adamc@567 71 | EApp (e1, e2) => Int.max (varDepth e1, varDepth e2)
adamc@567 72 | EAbs _ => 0
adamc@567 73 | EUnop (_, e) => varDepth e
adamc@567 74 | EBinop (_, e1, e2) => Int.max (varDepth e1, varDepth e2)
adamc@567 75 | ERecord xes => foldl Int.max 0 (map (fn (_, e, _) => varDepth e) xes)
adamc@567 76 | EField (e, _) => varDepth e
adamc@567 77 | ECase (e, pes, _) =>
adamc@567 78 foldl Int.max (varDepth e)
adamc@567 79 (map (fn (p, e) => E.patBindsN p + varDepth e) pes)
adamc@567 80 | EStrcat (e1, e2) => Int.max (varDepth e1, varDepth e2)
adamc@567 81 | EError (e, _) => varDepth e
adamc@567 82 | EWrite e => varDepth e
adamc@567 83 | ESeq (e1, e2) => Int.max (varDepth e1, varDepth e2)
adamc@567 84 | ELet (_, _, e1, e2) => Int.max (varDepth e1, 1 + varDepth e2)
adamc@567 85 | EClosure _ => 0
adamc@567 86 | EQuery _ => 0
adamc@567 87 | EDml _ => 0
adamc@567 88 | ENextval _ => 0
adamc@567 89 | EUnurlify _ => 0
adamc@567 90 | EJavaScript _ => 0
adamc@568 91 | ESignalReturn e => varDepth e
adamc@572 92 | ESignalBind (e1, e2) => Int.max (varDepth e1, varDepth e2)
adamc@574 93 | ESignalSource e => varDepth e
adamc@567 94
adamc@568 95 fun strcat loc es =
adamc@568 96 case es of
adamc@568 97 [] => (EPrim (Prim.String ""), loc)
adamc@568 98 | [x] => x
adamc@568 99 | x :: es' => (EStrcat (x, strcat loc es'), loc)
adamc@568 100
adamc@579 101 fun jsExp mode skip outer =
adamc@567 102 let
adamc@567 103 val len = length outer
adamc@567 104
adamc@567 105 fun jsE inner (e as (_, loc), st) =
adamc@567 106 let
adamc@567 107 fun str s = (EPrim (Prim.String s), loc)
adamc@567 108
adamc@567 109 fun var n = Int.toString (len + inner - n - 1)
adamc@567 110
adamc@567 111 fun patCon pc =
adamc@567 112 case pc of
adamc@567 113 PConVar n => str (Int.toString n)
adamc@586 114 | PConFfi {mod = "Basis", con = "True", ...} => str "true"
adamc@586 115 | PConFfi {mod = "Basis", con = "False", ...} => str "false"
adamc@567 116 | PConFfi {con, ...} => str ("\"_" ^ con ^ "\"")
adamc@567 117
adamc@567 118 fun isNullable (t, _) =
adamc@567 119 case t of
adamc@567 120 TOption _ => true
adamc@583 121 | TRecord [] => true
adamc@567 122 | _ => false
adamc@567 123
adamc@567 124 fun unsupported s =
adamc@567 125 (EM.errorAt loc (s ^ " in code to be compiled to JavaScript");
adamc@567 126 (str "ERROR", st))
adamc@568 127
adamc@568 128 val strcat = strcat loc
adamc@577 129
adamc@577 130 fun quoteExp (t : typ) e =
adamc@577 131 case #1 t of
adamc@577 132 TSource => strcat [str "s",
adamc@577 133 (EFfiApp ("Basis", "htmlifyInt", [e]), loc)]
adamc@579 134 | TRecord [] => str "null"
adamc@579 135 | TFfi ("Basis", "string") => e
adamc@577 136 | _ => (EM.errorAt loc "Don't know how to embed type in JavaScript";
adamc@579 137 Print.prefaces "Can't embed" [("t", MonoPrint.p_typ MonoEnv.empty t)];
adamc@577 138 str "ERROR")
adamc@584 139
adamc@584 140 fun jsPrim p =
adamc@584 141 case p of
adamc@584 142 Prim.String s =>
adamc@584 143 str ("\""
adamc@584 144 ^ String.translate (fn #"'" =>
adamc@584 145 if mode = Attribute then
adamc@584 146 "\\047"
adamc@584 147 else
adamc@584 148 "'"
adamc@584 149 | #"\"" => "\\\""
adamc@584 150 | #"<" =>
adamc@584 151 if mode = Script then
adamc@584 152 "<"
adamc@584 153 else
adamc@584 154 "\\074"
adamc@584 155 | #"\\" => "\\\\"
adamc@584 156 | ch => String.str ch) s
adamc@584 157 ^ "\"")
adamc@584 158 | _ => str (Prim.toString p)
adamc@584 159
adamc@585 160 fun jsPat depth inner (p, _) succ fail =
adamc@584 161 case p of
adamc@584 162 PWild => succ
adamc@585 163 | PVar _ => strcat [str ("(_" ^ Int.toString (len + inner) ^ "=d" ^ Int.toString depth ^ ","),
adamc@584 164 succ,
adamc@584 165 str ")"]
adamc@585 166 | PPrim p => strcat [str ("(d" ^ Int.toString depth ^ "=="),
adamc@584 167 jsPrim p,
adamc@584 168 str "?",
adamc@584 169 succ,
adamc@584 170 str ":",
adamc@584 171 fail,
adamc@584 172 str ")"]
adamc@584 173 | PCon _ => raise Fail "jsPat: PCon"
adamc@584 174 | PRecord xps =>
adamc@584 175 let
adamc@584 176 val (_, succ) = foldl
adamc@584 177 (fn ((x, p, _), (inner, succ)) =>
adamc@584 178 (inner + E.patBindsN p,
adamc@585 179 strcat [str ("(d" ^ Int.toString (depth+1) ^ "=d"
adamc@585 180 ^ Int.toString depth ^ "._" ^ x ^ ","),
adamc@585 181 jsPat (depth+1) inner p succ fail,
adamc@585 182 str ")"]))
adamc@584 183 (inner, succ) xps
adamc@584 184 in
adamc@584 185 succ
adamc@584 186 end
adamc@585 187 | PNone _ => strcat [str ("(d" ^ Int.toString depth ^ "?"),
adamc@584 188 fail,
adamc@584 189 str ":",
adamc@584 190 succ,
adamc@584 191 str ")"]
adamc@585 192 | PSome (_, p) => strcat [str ("(d" ^ Int.toString depth ^ "?"),
adamc@585 193 jsPat depth inner p succ fail,
adamc@584 194 str ":",
adamc@584 195 fail,
adamc@584 196 str ")"]
adamc@567 197 in
adamc@567 198 case #1 e of
adamc@584 199 EPrim p => (jsPrim p, st)
adamc@567 200 | ERel n =>
adamc@567 201 if n < inner then
adamc@583 202 (str ("_" ^ var n), st)
adamc@567 203 else
adamc@577 204 let
adamc@577 205 val n = n - inner
adamc@577 206 in
adamc@579 207 (quoteExp (List.nth (outer, n)) (ERel (n - skip), loc), st)
adamc@577 208 end
adamc@567 209 | ENamed _ => raise Fail "Named"
adamc@567 210 | ECon (_, pc, NONE) => (patCon pc, st)
adamc@567 211 | ECon (_, pc, SOME e) =>
adamc@567 212 let
adamc@567 213 val (s, st) = jsE inner (e, st)
adamc@567 214 in
adamc@567 215 (strcat [str "{n:",
adamc@567 216 patCon pc,
adamc@567 217 str ",v:",
adamc@567 218 s,
adamc@567 219 str "}"], st)
adamc@567 220 end
adamc@567 221 | ENone _ => (str "null", st)
adamc@567 222 | ESome (t, e) =>
adamc@567 223 let
adamc@567 224 val (e, st) = jsE inner (e, st)
adamc@567 225 in
adamc@567 226 (if isNullable t then
adamc@567 227 strcat [str "{v:", e, str "}"]
adamc@567 228 else
adamc@567 229 e, st)
adamc@567 230 end
adamc@567 231
adamc@572 232 | EFfi k =>
adamc@567 233 let
adamc@572 234 val name = case ffi k of
adamc@574 235 NONE => (EM.errorAt loc ("Unsupported FFI identifier " ^ #2 k ^ " in JavaScript");
adamc@572 236 "ERROR")
adamc@572 237 | SOME s => s
adamc@567 238 in
adamc@572 239 (str name, st)
adamc@567 240 end
adamc@572 241 | EFfiApp (m, x, args) =>
adamc@567 242 let
adamc@578 243 val args =
adamc@578 244 case (m, x, args) of
adamc@578 245 ("Basis", "new_client_source", [(EJavaScript (_, e, _), _)]) => [e]
adamc@578 246 | ("Basis", "set_client_source", [e1, (EJavaScript (_, e2, _), _)]) => [e1, e2]
adamc@578 247 | _ => args
adamc@578 248
adamc@572 249 val name = case ffi (m, x) of
adamc@574 250 NONE => (EM.errorAt loc ("Unsupported FFI function " ^ x ^ " in JavaScript");
adamc@572 251 "ERROR")
adamc@572 252 | SOME s => s
adamc@567 253 in
adamc@572 254 case args of
adamc@572 255 [] => (str (name ^ "()"), st)
adamc@572 256 | [e] =>
adamc@572 257 let
adamc@572 258 val (e, st) = jsE inner (e, st)
adamc@572 259 in
adamc@572 260 (strcat [str (name ^ "("),
adamc@572 261 e,
adamc@572 262 str ")"], st)
adamc@572 263 end
adamc@572 264 | e :: es =>
adamc@572 265 let
adamc@572 266 val (e, st) = jsE inner (e, st)
adamc@572 267 val (es, st) = ListUtil.foldlMapConcat
adamc@572 268 (fn (e, st) =>
adamc@572 269 let
adamc@572 270 val (e, st) = jsE inner (e, st)
adamc@572 271 in
adamc@572 272 ([str ",", e], st)
adamc@572 273 end)
adamc@572 274 st es
adamc@572 275 in
adamc@572 276 (strcat (str (name ^ "(")
adamc@572 277 :: e
adamc@572 278 :: es
adamc@572 279 @ [str ")"]), st)
adamc@572 280 end
adamc@567 281 end
adamc@567 282
adamc@567 283 | EApp (e1, e2) =>
adamc@567 284 let
adamc@567 285 val (e1, st) = jsE inner (e1, st)
adamc@567 286 val (e2, st) = jsE inner (e2, st)
adamc@567 287 in
adamc@567 288 (strcat [e1, str "(", e2, str ")"], st)
adamc@567 289 end
adamc@567 290 | EAbs (_, _, _, e) =>
adamc@567 291 let
adamc@567 292 val locals = List.tabulate
adamc@567 293 (varDepth e,
adamc@585 294 fn i => str ("var _" ^ Int.toString (len + inner + i + 1) ^ ";"))
adamc@567 295 val (e, st) = jsE (inner + 1) (e, st)
adamc@567 296 in
adamc@583 297 (strcat (str ("function(_"
adamc@567 298 ^ Int.toString (len + inner)
adamc@567 299 ^ "){")
adamc@567 300 :: locals
adamc@567 301 @ [str "return ",
adamc@567 302 e,
adamc@567 303 str "}"]),
adamc@567 304 st)
adamc@567 305 end
adamc@567 306
adamc@567 307 | EUnop (s, e) =>
adamc@567 308 let
adamc@567 309 val (e, st) = jsE inner (e, st)
adamc@567 310 in
adamc@567 311 (strcat [str ("(" ^ s),
adamc@567 312 e,
adamc@567 313 str ")"],
adamc@567 314 st)
adamc@567 315 end
adamc@567 316 | EBinop (s, e1, e2) =>
adamc@567 317 let
adamc@567 318 val (e1, st) = jsE inner (e1, st)
adamc@567 319 val (e2, st) = jsE inner (e2, st)
adamc@567 320 in
adamc@567 321 (strcat [str "(",
adamc@567 322 e1,
adamc@567 323 str s,
adamc@567 324 e2,
adamc@567 325 str ")"],
adamc@567 326 st)
adamc@567 327 end
adamc@567 328
adamc@567 329 | ERecord [] => (str "null", st)
adamc@567 330 | ERecord [(x, e, _)] =>
adamc@567 331 let
adamc@567 332 val (e, st) = jsE inner (e, st)
adamc@567 333 in
adamc@583 334 (strcat [str "{_x:", e, str "}"], st)
adamc@567 335 end
adamc@567 336 | ERecord ((x, e, _) :: xes) =>
adamc@567 337 let
adamc@567 338 val (e, st) = jsE inner (e, st)
adamc@567 339
adamc@567 340 val (es, st) =
adamc@567 341 foldr (fn ((x, e, _), (es, st)) =>
adamc@567 342 let
adamc@567 343 val (e, st) = jsE inner (e, st)
adamc@567 344 in
adamc@583 345 (str (",_" ^ x ^ ":")
adamc@567 346 :: e
adamc@567 347 :: es,
adamc@567 348 st)
adamc@567 349 end)
adamc@567 350 ([str "}"], st) xes
adamc@567 351 in
adamc@583 352 (strcat (str ("{_" ^ x ^ ":")
adamc@567 353 :: e
adamc@567 354 :: es),
adamc@567 355 st)
adamc@567 356 end
adamc@567 357 | EField (e, x) =>
adamc@567 358 let
adamc@567 359 val (e, st) = jsE inner (e, st)
adamc@567 360 in
adamc@567 361 (strcat [e,
adamc@583 362 str ("._" ^ x)], st)
adamc@567 363 end
adamc@567 364
adamc@584 365 | ECase (e, pes, _) =>
adamc@584 366 let
adamc@584 367 val plen = length pes
adamc@584 368
adamc@584 369 val (cases, st) = ListUtil.foldliMap
adamc@584 370 (fn (i, (p, e), st) =>
adamc@584 371 let
adamc@584 372 val (e, st) = jsE (inner + E.patBindsN p) (e, st)
adamc@584 373 val fail =
adamc@584 374 if i = plen - 1 then
adamc@584 375 str "pf()"
adamc@584 376 else
adamc@584 377 str ("c" ^ Int.toString (i+1) ^ "()")
adamc@585 378 val c = jsPat 0 inner p e fail
adamc@584 379 in
adamc@584 380 (strcat [str ("c" ^ Int.toString i ^ "=function(){return "),
adamc@584 381 c,
adamc@584 382 str "},"],
adamc@584 383 st)
adamc@584 384 end)
adamc@584 385 st pes
adamc@584 386
adamc@584 387 val (e, st) = jsE inner (e, st)
adamc@584 388 in
adamc@584 389 (strcat (str "("
adamc@584 390 :: List.revAppend (cases,
adamc@585 391 [str "d0=",
adamc@584 392 e,
adamc@584 393 str ",c0())"])), st)
adamc@584 394 end
adamc@567 395
adamc@567 396 | EStrcat (e1, e2) =>
adamc@567 397 let
adamc@567 398 val (e1, st) = jsE inner (e1, st)
adamc@567 399 val (e2, st) = jsE inner (e2, st)
adamc@567 400 in
adamc@567 401 (strcat [str "(", e1, str "+", e2, str ")"], st)
adamc@567 402 end
adamc@567 403
adamc@567 404 | EError (e, _) =>
adamc@567 405 let
adamc@567 406 val (e, st) = jsE inner (e, st)
adamc@567 407 in
adamc@567 408 (strcat [str "alert(\"ERROR: \"+", e, str ")"],
adamc@567 409 st)
adamc@567 410 end
adamc@567 411
adamc@568 412 | EWrite e =>
adamc@568 413 let
adamc@568 414 val (e, st) = jsE inner (e, st)
adamc@568 415 in
adamc@568 416 (strcat [str "document.write(",
adamc@568 417 e,
adamc@569 418 str ".v)"], st)
adamc@568 419 end
adamc@567 420
adamc@567 421 | ESeq (e1, e2) =>
adamc@567 422 let
adamc@567 423 val (e1, st) = jsE inner (e1, st)
adamc@567 424 val (e2, st) = jsE inner (e2, st)
adamc@567 425 in
adamc@567 426 (strcat [str "(", e1, str ",", e2, str ")"], st)
adamc@567 427 end
adamc@567 428 | ELet (_, _, e1, e2) =>
adamc@567 429 let
adamc@567 430 val (e1, st) = jsE inner (e1, st)
adamc@567 431 val (e2, st) = jsE (inner + 1) (e2, st)
adamc@567 432 in
adamc@583 433 (strcat [str ("(_" ^ Int.toString (len + inner) ^ "="),
adamc@567 434 e1,
adamc@567 435 str ",",
adamc@567 436 e2,
adamc@567 437 str ")"], st)
adamc@567 438 end
adamc@567 439
adamc@567 440 | EClosure _ => unsupported "EClosure"
adamc@567 441 | EQuery _ => unsupported "Query"
adamc@567 442 | EDml _ => unsupported "DML"
adamc@567 443 | ENextval _ => unsupported "Nextval"
adamc@567 444 | EUnurlify _ => unsupported "EUnurlify"
adamc@567 445 | EJavaScript _ => unsupported "Nested JavaScript"
adamc@568 446 | ESignalReturn e =>
adamc@568 447 let
adamc@568 448 val (e, st) = jsE inner (e, st)
adamc@568 449 in
adamc@572 450 (strcat [str "sr(",
adamc@569 451 e,
adamc@569 452 str ")"],
adamc@568 453 st)
adamc@568 454 end
adamc@572 455 | ESignalBind (e1, e2) =>
adamc@572 456 let
adamc@572 457 val (e1, st) = jsE inner (e1, st)
adamc@572 458 val (e2, st) = jsE inner (e2, st)
adamc@572 459 in
adamc@572 460 (strcat [str "sb(",
adamc@572 461 e1,
adamc@572 462 str ",",
adamc@572 463 e2,
adamc@572 464 str ")"],
adamc@572 465 st)
adamc@572 466 end
adamc@574 467 | ESignalSource e =>
adamc@574 468 let
adamc@574 469 val (e, st) = jsE inner (e, st)
adamc@574 470 in
adamc@574 471 (strcat [str "ss(",
adamc@574 472 e,
adamc@574 473 str ")"],
adamc@574 474 st)
adamc@574 475 end
adamc@567 476 end
adamc@567 477 in
adamc@567 478 jsE
adamc@567 479 end
adamc@567 480
adamc@567 481 val decl : state -> decl -> decl * state =
adamc@567 482 U.Decl.foldMapB {typ = fn x => x,
adamc@567 483 exp = fn (env, e, st) =>
adamc@568 484 let
adamc@579 485 fun doCode m skip env orig e =
adamc@568 486 let
adamc@568 487 val len = length env
adamc@568 488 fun str s = (EPrim (Prim.String s), #2 e)
adamc@568 489
adamc@568 490 val locals = List.tabulate
adamc@568 491 (varDepth e,
adamc@583 492 fn i => str ("var _" ^ Int.toString (len + i) ^ ";"))
adamc@579 493 val (e, st) = jsExp m skip env 0 (e, st)
adamc@568 494 in
adamc@578 495 (EJavaScript (m, orig, SOME (strcat (#2 e) (locals @ [e]))), st)
adamc@568 496 end
adamc@568 497 in
adamc@568 498 case e of
adamc@579 499 EJavaScript (m, orig as (EAbs (_, t, _, e), _), _) => doCode m 1 (t :: env) orig e
adamc@579 500 | EJavaScript (m, e, _) => doCode m 0 env e e
adamc@568 501 | _ => (e, st)
adamc@568 502 end,
adamc@567 503 decl = fn (_, e, st) => (e, st),
adamc@567 504 bind = fn (env, U.Decl.RelE (_, t)) => t :: env
adamc@567 505 | (env, _) => env}
adamc@567 506 []
adamc@567 507
adamc@567 508 fun process file =
adamc@567 509 let
adamc@567 510 fun doDecl (d, st) =
adamc@567 511 let
adamc@567 512 val (d, st) = decl st d
adamc@567 513 in
adamc@567 514 (List.revAppend (#decls st, [d]),
adamc@567 515 {decls = [],
adamc@567 516 script = #script st})
adamc@567 517 end
adamc@567 518
adamc@567 519 val (ds, st) = ListUtil.foldlMapConcat doDecl
adamc@567 520 {decls = [],
adamc@567 521 script = ""}
adamc@567 522 file
adamc@569 523
adamc@569 524 val inf = TextIO.openIn (OS.Path.joinDirFile {dir = Config.libJs, file = "urweb.js"})
adamc@569 525 fun lines acc =
adamc@569 526 case TextIO.inputLine inf of
adamc@569 527 NONE => String.concat (rev acc)
adamc@569 528 | SOME line => lines (line :: acc)
adamc@569 529 val lines = lines []
adamc@567 530 in
adamc@569 531 TextIO.closeIn inf;
adamc@569 532 (DJavaScript lines, ErrorMsg.dummySpan) :: ds
adamc@567 533 end
adamc@567 534
adamc@567 535 end