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annotate src/jscomp.sml @ 668:b0c1a46b1f15

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author Adam Chlipala <adamc@hcoop.net>
date Sun, 22 Mar 2009 15:05:07 -0400
parents bab524996fca
children f73913d97a40
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@589 36 structure IS = IntBinarySet
adamc@589 37 structure IM = IntBinaryMap
adamc@589 38
adamc@572 39 val funcs = [(("Basis", "alert"), "alert"),
adamc@601 40 (("Basis", "get_client_source"), "sg"),
adamc@586 41 (("Basis", "htmlifyBool"), "bs"),
adamc@583 42 (("Basis", "htmlifyFloat"), "ts"),
adamc@582 43 (("Basis", "htmlifyInt"), "ts"),
adamc@597 44 (("Basis", "htmlifyString"), "eh"),
adamc@579 45 (("Basis", "new_client_source"), "sc"),
adamc@614 46 (("Basis", "set_client_source"), "sv"),
adamc@649 47 (("Basis", "stringToFloat_error"), "pfl"),
adamc@649 48 (("Basis", "stringToInt_error"), "pi"),
adamc@614 49 (("Basis", "urlifyInt"), "ts"),
adamc@614 50 (("Basis", "urlifyFloat"), "ts"),
adamc@668 51 (("Basis", "urlifyString"), "escape"),
adamc@668 52 (("Basis", "urlifyChannel"), "ts")]
adamc@572 53
adamc@572 54 structure FM = BinaryMapFn(struct
adamc@572 55 type ord_key = string * string
adamc@572 56 fun compare ((m1, x1), (m2, x2)) =
adamc@572 57 Order.join (String.compare (m1, m2),
adamc@572 58 fn () => String.compare (x1, x2))
adamc@572 59 end)
adamc@572 60
adamc@572 61 val funcs = foldl (fn ((k, v), m) => FM.insert (m, k, v)) FM.empty funcs
adamc@572 62
adamc@572 63 fun ffi k = FM.find (funcs, k)
adamc@572 64
adamc@567 65 type state = {
adamc@567 66 decls : decl list,
adamc@589 67 script : string list,
adamc@595 68 included : IS.set,
adamc@595 69 injectors : int IM.map,
adamc@638 70 decoders : int IM.map,
adamc@595 71 maxName : int
adamc@567 72 }
adamc@567 73
adamc@567 74 fun varDepth (e, _) =
adamc@567 75 case e of
adamc@567 76 EPrim _ => 0
adamc@567 77 | ERel _ => 0
adamc@567 78 | ENamed _ => 0
adamc@567 79 | ECon (_, _, NONE) => 0
adamc@567 80 | ECon (_, _, SOME e) => varDepth e
adamc@567 81 | ENone _ => 0
adamc@567 82 | ESome (_, e) => varDepth e
adamc@567 83 | EFfi _ => 0
adamc@567 84 | EFfiApp (_, _, es) => foldl Int.max 0 (map varDepth es)
adamc@567 85 | EApp (e1, e2) => Int.max (varDepth e1, varDepth e2)
adamc@567 86 | EAbs _ => 0
adamc@567 87 | EUnop (_, e) => varDepth e
adamc@567 88 | EBinop (_, e1, e2) => Int.max (varDepth e1, varDepth e2)
adamc@567 89 | ERecord xes => foldl Int.max 0 (map (fn (_, e, _) => varDepth e) xes)
adamc@567 90 | EField (e, _) => varDepth e
adamc@567 91 | ECase (e, pes, _) =>
adamc@567 92 foldl Int.max (varDepth e)
adamc@567 93 (map (fn (p, e) => E.patBindsN p + varDepth e) pes)
adamc@567 94 | EStrcat (e1, e2) => Int.max (varDepth e1, varDepth e2)
adamc@567 95 | EError (e, _) => varDepth e
adamc@567 96 | EWrite e => varDepth e
adamc@567 97 | ESeq (e1, e2) => Int.max (varDepth e1, varDepth e2)
adamc@567 98 | ELet (_, _, e1, e2) => Int.max (varDepth e1, 1 + varDepth e2)
adamc@567 99 | EClosure _ => 0
adamc@567 100 | EQuery _ => 0
adamc@567 101 | EDml _ => 0
adamc@567 102 | ENextval _ => 0
adamc@567 103 | EUnurlify _ => 0
adamc@567 104 | EJavaScript _ => 0
adamc@568 105 | ESignalReturn e => varDepth e
adamc@572 106 | ESignalBind (e1, e2) => Int.max (varDepth e1, varDepth e2)
adamc@574 107 | ESignalSource e => varDepth e
adamc@614 108 | EServerCall (e, ek, _) => Int.max (varDepth e, varDepth ek)
adamc@567 109
adamc@591 110 fun closedUpto d =
adamc@591 111 let
adamc@591 112 fun cu inner (e, _) =
adamc@591 113 case e of
adamc@591 114 EPrim _ => true
adamc@591 115 | ERel n => n < inner orelse n - inner >= d
adamc@591 116 | ENamed _ => true
adamc@591 117 | ECon (_, _, NONE) => true
adamc@591 118 | ECon (_, _, SOME e) => cu inner e
adamc@591 119 | ENone _ => true
adamc@591 120 | ESome (_, e) => cu inner e
adamc@591 121 | EFfi _ => true
adamc@591 122 | EFfiApp (_, _, es) => List.all (cu inner) es
adamc@591 123 | EApp (e1, e2) => cu inner e1 andalso cu inner e2
adamc@591 124 | EAbs (_, _, _, e) => cu (inner + 1) e
adamc@591 125 | EUnop (_, e) => cu inner e
adamc@591 126 | EBinop (_, e1, e2) => cu inner e1 andalso cu inner e2
adamc@591 127 | ERecord xes => List.all (fn (_, e, _) => cu inner e) xes
adamc@591 128 | EField (e, _) => cu inner e
adamc@591 129 | ECase (e, pes, _) =>
adamc@591 130 cu inner e
adamc@591 131 andalso List.all (fn (p, e) => cu (inner + E.patBindsN p) e) pes
adamc@591 132 | EStrcat (e1, e2) => cu inner e1 andalso cu inner e2
adamc@591 133 | EError (e, _) => cu inner e
adamc@591 134 | EWrite e => cu inner e
adamc@591 135 | ESeq (e1, e2) => cu inner e1 andalso cu inner e2
adamc@591 136 | ELet (_, _, e1, e2) => cu inner e1 andalso cu (inner + 1) e2
adamc@591 137 | EClosure (_, es) => List.all (cu inner) es
adamc@591 138 | EQuery {query, body, initial, ...} =>
adamc@591 139 cu inner query
adamc@591 140 andalso cu (inner + 2) body
adamc@591 141 andalso cu inner initial
adamc@591 142 | EDml e => cu inner e
adamc@591 143 | ENextval e => cu inner e
adamc@591 144 | EUnurlify (e, _) => cu inner e
adamc@591 145 | EJavaScript (_, e, _) => cu inner e
adamc@591 146 | ESignalReturn e => cu inner e
adamc@591 147 | ESignalBind (e1, e2) => cu inner e1 andalso cu inner e2
adamc@591 148 | ESignalSource e => cu inner e
adamc@614 149 | EServerCall (e, ek, _) => cu inner e andalso cu inner ek
adamc@591 150 in
adamc@591 151 cu 0
adamc@591 152 end
adamc@591 153
adamc@568 154 fun strcat loc es =
adamc@568 155 case es of
adamc@568 156 [] => (EPrim (Prim.String ""), loc)
adamc@568 157 | [x] => x
adamc@568 158 | x :: es' => (EStrcat (x, strcat loc es'), loc)
adamc@568 159
adamc@589 160 fun process file =
adamc@567 161 let
adamc@596 162 val (someTs, nameds) =
adamc@596 163 foldl (fn ((DVal (_, n, t, e, _), _), (someTs, nameds)) => (someTs, IM.insert (nameds, n, e))
adamc@596 164 | ((DValRec vis, _), (someTs, nameds)) =>
adamc@596 165 (someTs, foldl (fn ((_, n, _, e, _), nameds) => IM.insert (nameds, n, e))
adamc@596 166 nameds vis)
adamc@596 167 | ((DDatatype (_, _, cs), _), state as (someTs, nameds)) =>
adamc@596 168 if ElabUtil.classifyDatatype cs = Option then
adamc@596 169 (foldl (fn ((_, n, SOME t), someTs) => IM.insert (someTs, n, t)
adamc@596 170 | (_, someTs) => someTs) someTs cs,
adamc@596 171 nameds)
adamc@596 172 else
adamc@596 173 state
adamc@595 174 | (_, state) => state)
adamc@596 175 (IM.empty, IM.empty) file
adamc@567 176
adamc@590 177 fun str loc s = (EPrim (Prim.String s), loc)
adamc@590 178
adamc@594 179 fun isNullable (t, _) =
adamc@594 180 case t of
adamc@594 181 TOption _ => true
adamc@594 182 | TRecord [] => true
adamc@594 183 | _ => false
adamc@594 184
adamc@593 185 fun quoteExp loc (t : typ) (e, st) =
adamc@590 186 case #1 t of
adamc@593 187 TSource => (strcat loc [str loc "s",
adamc@593 188 (EFfiApp ("Basis", "htmlifyInt", [e]), loc)], st)
adamc@590 189
adamc@593 190 | TRecord [] => (str loc "null", st)
adamc@593 191 | TRecord [(x, t)] =>
adamc@593 192 let
adamc@593 193 val (e, st) = quoteExp loc t ((EField (e, x), loc), st)
adamc@593 194 in
adamc@593 195 (strcat loc [str loc ("{_" ^ x ^ ":"),
adamc@593 196 e,
adamc@593 197 str loc "}"], st)
adamc@593 198 end
adamc@593 199 | TRecord ((x, t) :: xts) =>
adamc@593 200 let
adamc@593 201 val (e', st) = quoteExp loc t ((EField (e, x), loc), st)
adamc@593 202 val (es, st) = ListUtil.foldlMap
adamc@593 203 (fn ((x, t), st) =>
adamc@593 204 let
adamc@593 205 val (e, st) = quoteExp loc t ((EField (e, x), loc), st)
adamc@593 206 in
adamc@593 207 (strcat loc [str loc (",_" ^ x ^ ":"), e], st)
adamc@593 208 end)
adamc@593 209 st xts
adamc@593 210 in
adamc@593 211 (strcat loc (str loc ("{_" ^ x ^ ":")
adamc@593 212 :: e'
adamc@593 213 :: es
adamc@593 214 @ [str loc "}"]), st)
adamc@593 215 end
adamc@590 216
adamc@593 217 | TFfi ("Basis", "string") => ((EFfiApp ("Basis", "jsifyString", [e]), loc), st)
adamc@593 218 | TFfi ("Basis", "int") => ((EFfiApp ("Basis", "htmlifyInt", [e]), loc), st)
adamc@593 219 | TFfi ("Basis", "float") => ((EFfiApp ("Basis", "htmlifyFloat", [e]), loc), st)
adamc@668 220 | TFfi ("Basis", "channel") => ((EFfiApp ("Basis", "htmlifyChannel", [e]), loc), st)
adamc@593 221
adamc@593 222 | TFfi ("Basis", "bool") => ((ECase (e,
adamc@593 223 [((PCon (Enum, PConFfi {mod = "Basis",
adamc@593 224 datatyp = "bool",
adamc@593 225 con = "True",
adamc@593 226 arg = NONE}, NONE), loc),
adamc@593 227 str loc "true"),
adamc@593 228 ((PCon (Enum, PConFfi {mod = "Basis",
adamc@593 229 datatyp = "bool",
adamc@593 230 con = "False",
adamc@593 231 arg = NONE}, NONE), loc),
adamc@593 232 str loc "false")],
adamc@593 233 {disc = (TFfi ("Basis", "bool"), loc),
adamc@593 234 result = (TFfi ("Basis", "string"), loc)}), loc),
adamc@593 235 st)
adamc@592 236
adamc@594 237 | TOption t =>
adamc@594 238 let
adamc@594 239 val (e', st) = quoteExp loc t ((ERel 0, loc), st)
adamc@594 240 in
adamc@594 241 ((ECase (e,
adamc@594 242 [((PNone t, loc),
adamc@594 243 str loc "null"),
adamc@594 244 ((PSome (t, (PVar ("x", t), loc)), loc),
adamc@594 245 if isNullable t then
adamc@594 246 strcat loc [str loc "{v:", e', str loc "}"]
adamc@594 247 else
adamc@594 248 e')],
adamc@594 249 {disc = (TOption t, loc),
adamc@594 250 result = (TFfi ("Basis", "string"), loc)}), loc),
adamc@594 251 st)
adamc@594 252 end
adamc@594 253
adamc@595 254 | TDatatype (n, ref (dk, cs)) =>
adamc@595 255 (case IM.find (#injectors st, n) of
adamc@595 256 SOME n' => ((EApp ((ENamed n', loc), e), loc), st)
adamc@595 257 | NONE =>
adamc@595 258 let
adamc@595 259 val n' = #maxName st
adamc@595 260 val st = {decls = #decls st,
adamc@595 261 script = #script st,
adamc@595 262 included = #included st,
adamc@595 263 injectors = IM.insert (#injectors st, n, n'),
adamc@638 264 decoders = #decoders st,
adamc@595 265 maxName = n' + 1}
adamc@595 266
adamc@595 267 val (pes, st) = ListUtil.foldlMap
adamc@595 268 (fn ((_, cn, NONE), st) =>
adamc@595 269 (((PCon (dk, PConVar cn, NONE), loc),
adamc@596 270 case dk of
adamc@596 271 Option => str loc "null"
adamc@596 272 | _ => str loc (Int.toString cn)),
adamc@595 273 st)
adamc@595 274 | ((_, cn, SOME t), st) =>
adamc@595 275 let
adamc@595 276 val (e, st) = quoteExp loc t ((ERel 0, loc), st)
adamc@595 277 in
adamc@595 278 (((PCon (dk, PConVar cn, SOME (PVar ("x", t), loc)), loc),
adamc@596 279 case dk of
adamc@596 280 Option =>
adamc@596 281 if isNullable t then
adamc@638 282 strcat loc [str loc "{v:",
adamc@596 283 e,
adamc@596 284 str loc "}"]
adamc@596 285 else
adamc@596 286 e
adamc@597 287 | _ => strcat loc [str loc ("{n:" ^ Int.toString cn
adamc@597 288 ^ ",v:"),
adamc@597 289 e,
adamc@597 290 str loc "}"]),
adamc@595 291 st)
adamc@595 292 end)
adamc@595 293 st cs
adamc@595 294
adamc@595 295 val s = (TFfi ("Basis", "string"), loc)
adamc@595 296 val body = (ECase ((ERel 0, loc), pes,
adamc@595 297 {disc = t, result = s}), loc)
adamc@595 298 val body = (EAbs ("x", t, s, body), loc)
adamc@595 299
adamc@595 300 val st = {decls = (DValRec [("jsify", n', (TFun (t, s), loc),
adamc@595 301 body, "jsify")], loc) :: #decls st,
adamc@595 302 script = #script st,
adamc@595 303 included = #included st,
adamc@595 304 injectors = #injectors st,
adamc@638 305 decoders= #decoders st,
adamc@595 306 maxName = #maxName st}
adamc@595 307 in
adamc@595 308 ((EApp ((ENamed n', loc), e), loc), st)
adamc@595 309 end)
adamc@595 310
adamc@590 311 | _ => (EM.errorAt loc "Don't know how to embed type in JavaScript";
adamc@590 312 Print.prefaces "Can't embed" [("t", MonoPrint.p_typ MonoEnv.empty t)];
adamc@593 313 (str loc "ERROR", st))
adamc@590 314
adamc@613 315 fun unurlifyExp loc (t : typ, st) =
adamc@613 316 case #1 t of
adamc@613 317 TRecord [] => ("null", st)
adamc@613 318 | TRecord [(x, t)] =>
adamc@613 319 let
adamc@613 320 val (e, st) = unurlifyExp loc (t, st)
adamc@613 321 in
adamc@613 322 ("{_" ^ x ^ ":" ^ e ^ "}",
adamc@613 323 st)
adamc@613 324 end
adamc@613 325 | TRecord ((x, t) :: xts) =>
adamc@613 326 let
adamc@613 327 val (e', st) = unurlifyExp loc (t, st)
adamc@613 328 val (es, st) = ListUtil.foldlMap
adamc@638 329 (fn ((x, t), st) =>
adamc@638 330 let
adamc@638 331 val (e, st) = unurlifyExp loc (t, st)
adamc@638 332 in
adamc@638 333 (",_" ^ x ^ ":" ^ e, st)
adamc@638 334 end)
adamc@638 335 st xts
adamc@613 336 in
adamc@613 337 (String.concat ("{_"
adamc@613 338 :: x
adamc@613 339 :: ":"
adamc@613 340 :: e'
adamc@613 341 :: es
adamc@613 342 @ ["}"]), st)
adamc@613 343 end
adamc@613 344
adamc@641 345 | TFfi ("Basis", "string") => ("unescape(t[i++])", st)
adamc@613 346 | TFfi ("Basis", "int") => ("parseInt(t[i++])", st)
adamc@613 347 | TFfi ("Basis", "float") => ("parseFloat(t[i++])", st)
adamc@613 348
adamc@613 349 | TFfi ("Basis", "bool") => ("t[i++] == \"True\"", st)
adamc@613 350
adamc@638 351 | TOption t =>
adamc@613 352 let
adamc@638 353 val (e, st) = unurlifyExp loc (t, st)
adamc@638 354 val e = if isNullable t then
adamc@638 355 "{v:" ^ e ^ "}"
adamc@638 356 else
adamc@638 357 e
adamc@613 358 in
adamc@638 359 ("(uu=t[i++],uu==\"Some\"?" ^ e ^ ":null)", st)
adamc@638 360 end
adamc@613 361
adamc@638 362 | TDatatype (n, ref (dk, cs)) =>
adamc@638 363 (case IM.find (#decoders st, n) of
adamc@638 364 SOME n' => ("(tmp=_n" ^ Int.toString n' ^ "(t,i),i=tmp._1,tmp._2)", st)
adamc@613 365 | NONE =>
adamc@613 366 let
adamc@613 367 val n' = #maxName st
adamc@613 368 val st = {decls = #decls st,
adamc@613 369 script = #script st,
adamc@613 370 included = #included st,
adamc@638 371 injectors = #injectors st,
adamc@638 372 decoders = IM.insert (#decoders st, n, n'),
adamc@613 373 maxName = n' + 1}
adamc@613 374
adamc@638 375 val (e, st) = foldl (fn ((x, cn, NONE), (e, st)) =>
adamc@638 376 ("x==\"" ^ x ^ "\"?"
adamc@638 377 ^ (case dk of
adamc@638 378 Option => "null"
adamc@638 379 | _ => Int.toString cn)
adamc@638 380 ^ ":" ^ e,
adamc@613 381 st)
adamc@638 382 | ((x, cn, SOME t), (e, st)) =>
adamc@613 383 let
adamc@638 384 val (e', st) = unurlifyExp loc (t, st)
adamc@613 385 in
adamc@638 386 ("x==\"" ^ x ^ "\"?"
adamc@638 387 ^ (case dk of
adamc@638 388 Option =>
adamc@638 389 if isNullable t then
adamc@638 390 "{v:" ^ e' ^ "}"
adamc@638 391 else
adamc@638 392 e'
adamc@638 393 | _ => "{n:" ^ Int.toString cn ^ ",v:" ^ e' ^ "}")
adamc@638 394 ^ ":" ^ e,
adamc@613 395 st)
adamc@613 396 end)
adamc@638 397 ("pf()", st) cs
adamc@613 398
adamc@638 399 val body = "function _n" ^ Int.toString n' ^ "(t,i){var x=t[i++];var r="
adamc@638 400 ^ e ^ ";return {_1:i,_2:r}}\n\n"
adamc@613 401
adamc@638 402 val st = {decls = #decls st,
adamc@638 403 script = body :: #script st,
adamc@613 404 included = #included st,
adamc@613 405 injectors = #injectors st,
adamc@638 406 decoders = #decoders st,
adamc@613 407 maxName = #maxName st}
adamc@613 408 in
adamc@638 409 ("(tmp=_n" ^ Int.toString n' ^ "(t,i),i=tmp._1,tmp._2)", st)
adamc@638 410 end)
adamc@613 411
adamc@613 412 | _ => (EM.errorAt loc "Don't know how to unurlify type in JavaScript";
adamc@613 413 Print.prefaces "Can't unurlify" [("t", MonoPrint.p_typ MonoEnv.empty t)];
adamc@613 414 ("ERROR", st))
adamc@613 415
adamc@646 416 fun padWith (ch, s, len) =
adamc@646 417 if size s < len then
adamc@646 418 padWith (ch, String.str ch ^ s, len - 1)
adamc@646 419 else
adamc@646 420 s
adamc@646 421
adamc@589 422 fun jsExp mode skip outer =
adamc@567 423 let
adamc@589 424 val len = length outer
adamc@567 425
adamc@589 426 fun jsE inner (e as (_, loc), st) =
adamc@589 427 let
adamc@590 428 val str = str loc
adamc@567 429
adamc@589 430 fun var n = Int.toString (len + inner - n - 1)
adamc@567 431
adamc@589 432 fun patCon pc =
adamc@589 433 case pc of
adamc@589 434 PConVar n => str (Int.toString n)
adamc@589 435 | PConFfi {mod = "Basis", con = "True", ...} => str "true"
adamc@589 436 | PConFfi {mod = "Basis", con = "False", ...} => str "false"
adamc@589 437 | PConFfi {con, ...} => str ("\"_" ^ con ^ "\"")
adamc@567 438
adamc@591 439 fun unsupported s =
adamc@591 440 (EM.errorAt loc (s ^ " in code to be compiled to JavaScript[2]");
adamc@591 441 (str "ERROR", st))
adamc@577 442
adamc@589 443 val strcat = strcat loc
adamc@584 444
adamc@589 445 fun jsPrim p =
adamc@589 446 case p of
adamc@589 447 Prim.String s =>
adamc@589 448 str ("\""
adamc@589 449 ^ String.translate (fn #"'" =>
adamc@589 450 if mode = Attribute then
adamc@589 451 "\\047"
adamc@589 452 else
adamc@589 453 "'"
adamc@589 454 | #"\"" => "\\\""
adamc@589 455 | #"<" =>
adamc@589 456 if mode = Script then
adamc@589 457 "<"
adamc@589 458 else
adamc@589 459 "\\074"
adamc@589 460 | #"\\" => "\\\\"
adamc@646 461 | #"\n" => "\\n"
adamc@646 462 | #"\r" => "\\r"
adamc@646 463 | #"\t" => "\\t"
adamc@646 464 | ch =>
adamc@646 465 if Char.isPrint ch then
adamc@646 466 String.str ch
adamc@646 467 else
adamc@646 468 "\\" ^ padWith (#"0",
adamc@646 469 Int.fmt StringCvt.OCT (ord ch),
adamc@646 470 3)) s
adamc@589 471 ^ "\"")
adamc@589 472 | _ => str (Prim.toString p)
adamc@589 473
adamc@589 474 fun jsPat depth inner (p, _) succ fail =
adamc@589 475 case p of
adamc@589 476 PWild => succ
adamc@589 477 | PVar _ => strcat [str ("(_" ^ Int.toString (len + inner) ^ "=d"
adamc@589 478 ^ Int.toString depth ^ ","),
adamc@589 479 succ,
adamc@589 480 str ")"]
adamc@589 481 | PPrim p => strcat [str ("(d" ^ Int.toString depth ^ "=="),
adamc@589 482 jsPrim p,
adamc@589 483 str "?",
adamc@589 484 succ,
adamc@589 485 str ":",
adamc@589 486 fail,
adamc@589 487 str ")"]
adamc@589 488 | PCon (_, PConFfi {mod = "Basis", con = "True", ...}, NONE) =>
adamc@589 489 strcat [str ("(d" ^ Int.toString depth ^ "?"),
adamc@589 490 succ,
adamc@589 491 str ":",
adamc@589 492 fail,
adamc@589 493 str ")"]
adamc@589 494 | PCon (_, PConFfi {mod = "Basis", con = "False", ...}, NONE) =>
adamc@589 495 strcat [str ("(d" ^ Int.toString depth ^ "?"),
adamc@589 496 fail,
adamc@589 497 str ":",
adamc@589 498 succ,
adamc@589 499 str ")"]
adamc@596 500 | PCon (Option, _, NONE) =>
adamc@596 501 strcat [str ("(d" ^ Int.toString depth ^ "?"),
adamc@596 502 fail,
adamc@596 503 str ":",
adamc@596 504 succ,
adamc@596 505 str ")"]
adamc@596 506 | PCon (Option, PConVar n, SOME p) =>
adamc@596 507 (case IM.find (someTs, n) of
adamc@596 508 NONE => raise Fail "Jscomp: Not in someTs"
adamc@596 509 | SOME t =>
adamc@596 510 strcat [str ("(d" ^ Int.toString depth ^ "?("
adamc@596 511 ^ (if isNullable t then
adamc@596 512 "d" ^ Int.toString depth ^ "=d"
adamc@596 513 ^ Int.toString depth ^ ".v,"
adamc@596 514 else
adamc@596 515 "")),
adamc@596 516 jsPat depth inner p succ fail,
adamc@596 517 str "):",
adamc@596 518 fail,
adamc@596 519 str ")"])
adamc@589 520 | PCon (_, pc, NONE) =>
adamc@589 521 strcat [str ("(d" ^ Int.toString depth ^ "=="),
adamc@589 522 patCon pc,
adamc@589 523 str "?",
adamc@589 524 succ,
adamc@589 525 str ":",
adamc@589 526 fail,
adamc@589 527 str ")"]
adamc@589 528 | PCon (_, pc, SOME p) =>
adamc@589 529 strcat [str ("(d" ^ Int.toString depth ^ ".n=="),
adamc@589 530 patCon pc,
adamc@589 531 str ("?(d" ^ Int.toString depth ^ "=d" ^ Int.toString depth ^ ".v,"),
adamc@589 532 jsPat depth inner p succ fail,
adamc@589 533 str "):",
adamc@589 534 fail,
adamc@589 535 str ")"]
adamc@589 536 | PRecord xps =>
adamc@589 537 let
adamc@589 538 val (_, succ) = foldl
adamc@589 539 (fn ((x, p, _), (inner, succ)) =>
adamc@589 540 (inner + E.patBindsN p,
adamc@589 541 strcat [str ("(d" ^ Int.toString (depth+1) ^ "=d"
adamc@589 542 ^ Int.toString depth ^ "._" ^ x ^ ","),
adamc@589 543 jsPat (depth+1) inner p succ fail,
adamc@589 544 str ")"]))
adamc@589 545 (inner, succ) xps
adamc@589 546 in
adamc@589 547 succ
adamc@589 548 end
adamc@589 549 | PNone _ => strcat [str ("(d" ^ Int.toString depth ^ "?"),
adamc@589 550 fail,
adamc@589 551 str ":",
adamc@589 552 succ,
adamc@589 553 str ")"]
adamc@594 554 | PSome (t, p) => strcat (str ("(d" ^ Int.toString depth ^ "?")
adamc@594 555 :: (if isNullable t then
adamc@594 556 [str ("d" ^ Int.toString depth
adamc@594 557 ^ "=d" ^ Int.toString depth ^ ".v")]
adamc@594 558 else
adamc@594 559 [])
adamc@594 560 @ [jsPat depth inner p succ fail,
adamc@594 561 str ":",
adamc@594 562 fail,
adamc@594 563 str ")"])
adamc@589 564
adamc@601 565 val jsifyString = String.translate (fn #"\"" => "\\\""
adamc@601 566 | #"\\" => "\\\\"
adamc@601 567 | ch => String.str ch)
adamc@601 568
adamc@601 569 fun jsifyStringMulti (n, s) =
adamc@601 570 case n of
adamc@601 571 0 => s
adamc@601 572 | _ => jsifyStringMulti (n - 1, jsifyString s)
adamc@601 573
adamc@601 574 fun deStrcat level (all as (e, _)) =
adamc@589 575 case e of
adamc@601 576 EPrim (Prim.String s) => jsifyStringMulti (level, s)
adamc@601 577 | EStrcat (e1, e2) => deStrcat level e1 ^ deStrcat level e2
adamc@601 578 | EFfiApp ("Basis", "jsifyString", [e]) => "\"" ^ deStrcat (level + 1) e ^ "\""
adamc@601 579 | _ => (Print.prefaces "deStrcat" [("e", MonoPrint.p_exp MonoEnv.empty all)];
adamc@601 580 raise Fail "Jscomp: deStrcat")
adamc@590 581
adamc@590 582 val quoteExp = quoteExp loc
adamc@567 583 in
adamc@590 584 (*Print.prefaces "jsE" [("e", MonoPrint.p_exp MonoEnv.empty e)];*)
adamc@590 585
adamc@589 586 case #1 e of
adamc@589 587 EPrim p => (jsPrim p, st)
adamc@589 588 | ERel n =>
adamc@589 589 if n < inner then
adamc@589 590 (str ("_" ^ var n), st)
adamc@589 591 else
adamc@589 592 let
adamc@589 593 val n = n - inner
adamc@589 594 in
adamc@593 595 quoteExp (List.nth (outer, n)) ((ERel (n - skip), loc), st)
adamc@589 596 end
adamc@567 597
adamc@589 598 | ENamed n =>
adamc@589 599 let
adamc@589 600 val st =
adamc@589 601 if IS.member (#included st, n) then
adamc@589 602 st
adamc@589 603 else
adamc@589 604 case IM.find (nameds, n) of
adamc@589 605 NONE => raise Fail "Jscomp: Unbound ENamed"
adamc@589 606 | SOME e =>
adamc@589 607 let
adamc@589 608 val st = {decls = #decls st,
adamc@589 609 script = #script st,
adamc@595 610 included = IS.add (#included st, n),
adamc@595 611 injectors = #injectors st,
adamc@638 612 decoders = #decoders st,
adamc@595 613 maxName = #maxName st}
adamc@578 614
adamc@589 615 val (e, st) = jsExp mode skip [] 0 (e, st)
adamc@601 616 val e = deStrcat 0 e
adamc@589 617
adamc@589 618 val sc = "_n" ^ Int.toString n ^ "=" ^ e ^ ";\n"
adamc@589 619 in
adamc@589 620 {decls = #decls st,
adamc@589 621 script = sc :: #script st,
adamc@595 622 included = #included st,
adamc@595 623 injectors = #injectors st,
adamc@638 624 decoders= #decoders st,
adamc@595 625 maxName = #maxName st}
adamc@589 626 end
adamc@589 627 in
adamc@589 628 (str ("_n" ^ Int.toString n), st)
adamc@589 629 end
adamc@589 630
adamc@596 631 | ECon (Option, _, NONE) => (str "null", st)
adamc@596 632 | ECon (Option, PConVar n, SOME e) =>
adamc@596 633 let
adamc@596 634 val (e, st) = jsE inner (e, st)
adamc@596 635 in
adamc@596 636 case IM.find (someTs, n) of
adamc@596 637 NONE => raise Fail "Jscomp: Not in someTs [2]"
adamc@596 638 | SOME t =>
adamc@596 639 (if isNullable t then
adamc@596 640 strcat [str "{v:",
adamc@596 641 e,
adamc@596 642 str "}"]
adamc@596 643 else
adamc@596 644 e, st)
adamc@596 645 end
adamc@596 646
adamc@589 647 | ECon (_, pc, NONE) => (patCon pc, st)
adamc@589 648 | ECon (_, pc, SOME e) =>
adamc@589 649 let
adamc@589 650 val (s, st) = jsE inner (e, st)
adamc@589 651 in
adamc@589 652 (strcat [str "{n:",
adamc@589 653 patCon pc,
adamc@589 654 str ",v:",
adamc@589 655 s,
adamc@589 656 str "}"], st)
adamc@589 657 end
adamc@596 658
adamc@589 659 | ENone _ => (str "null", st)
adamc@589 660 | ESome (t, e) =>
adamc@572 661 let
adamc@572 662 val (e, st) = jsE inner (e, st)
adamc@572 663 in
adamc@589 664 (if isNullable t then
adamc@589 665 strcat [str "{v:", e, str "}"]
adamc@589 666 else
adamc@589 667 e, st)
adamc@589 668 end
adamc@589 669
adamc@589 670 | EFfi k =>
adamc@589 671 let
adamc@589 672 val name = case ffi k of
adamc@589 673 NONE => (EM.errorAt loc ("Unsupported FFI identifier " ^ #2 k
adamc@589 674 ^ " in JavaScript");
adamc@589 675 "ERROR")
adamc@589 676 | SOME s => s
adamc@589 677 in
adamc@589 678 (str name, st)
adamc@589 679 end
adamc@589 680 | EFfiApp (m, x, args) =>
adamc@589 681 let
adamc@589 682 val args =
adamc@589 683 case (m, x, args) of
adamc@589 684 ("Basis", "new_client_source", [(EJavaScript (_, e, _), _)]) => [e]
adamc@589 685 | ("Basis", "set_client_source", [e1, (EJavaScript (_, e2, _), _)]) => [e1, e2]
adamc@589 686 | _ => args
adamc@589 687
adamc@589 688 val name = case ffi (m, x) of
adamc@589 689 NONE => (EM.errorAt loc ("Unsupported FFI function "
adamc@589 690 ^ x ^ " in JavaScript");
adamc@589 691 "ERROR")
adamc@589 692 | SOME s => s
adamc@589 693 in
adamc@589 694 case args of
adamc@589 695 [] => (str (name ^ "()"), st)
adamc@589 696 | [e] =>
adamc@589 697 let
adamc@589 698 val (e, st) = jsE inner (e, st)
adamc@589 699 in
adamc@589 700 (strcat [str (name ^ "("),
adamc@589 701 e,
adamc@589 702 str ")"], st)
adamc@589 703 end
adamc@589 704 | e :: es =>
adamc@589 705 let
adamc@589 706 val (e, st) = jsE inner (e, st)
adamc@589 707 val (es, st) = ListUtil.foldlMapConcat
adamc@589 708 (fn (e, st) =>
adamc@589 709 let
adamc@589 710 val (e, st) = jsE inner (e, st)
adamc@589 711 in
adamc@589 712 ([str ",", e], st)
adamc@589 713 end)
adamc@589 714 st es
adamc@589 715 in
adamc@589 716 (strcat (str (name ^ "(")
adamc@589 717 :: e
adamc@589 718 :: es
adamc@589 719 @ [str ")"]), st)
adamc@589 720 end
adamc@589 721 end
adamc@589 722
adamc@589 723 | EApp (e1, e2) =>
adamc@589 724 let
adamc@589 725 val (e1, st) = jsE inner (e1, st)
adamc@589 726 val (e2, st) = jsE inner (e2, st)
adamc@589 727 in
adamc@589 728 (strcat [e1, str "(", e2, str ")"], st)
adamc@589 729 end
adamc@589 730 | EAbs (_, _, _, e) =>
adamc@589 731 let
adamc@589 732 val locals = List.tabulate
adamc@589 733 (varDepth e,
adamc@589 734 fn i => str ("var _" ^ Int.toString (len + inner + i + 1) ^ ";"))
adamc@589 735 val (e, st) = jsE (inner + 1) (e, st)
adamc@589 736 in
adamc@589 737 (strcat (str ("function(_"
adamc@589 738 ^ Int.toString (len + inner)
adamc@589 739 ^ "){")
adamc@589 740 :: locals
adamc@589 741 @ [str "return ",
adamc@589 742 e,
adamc@589 743 str "}"]),
adamc@589 744 st)
adamc@589 745 end
adamc@589 746
adamc@589 747 | EUnop (s, e) =>
adamc@589 748 let
adamc@589 749 val (e, st) = jsE inner (e, st)
adamc@589 750 in
adamc@589 751 (strcat [str ("(" ^ s),
adamc@572 752 e,
adamc@589 753 str ")"],
adamc@589 754 st)
adamc@589 755 end
adamc@589 756 | EBinop (s, e1, e2) =>
adamc@589 757 let
adamc@589 758 val (e1, st) = jsE inner (e1, st)
adamc@589 759 val (e2, st) = jsE inner (e2, st)
adamc@589 760 in
adamc@589 761 (strcat [str "(",
adamc@589 762 e1,
adamc@589 763 str s,
adamc@589 764 e2,
adamc@589 765 str ")"],
adamc@589 766 st)
adamc@589 767 end
adamc@589 768
adamc@589 769 | ERecord [] => (str "null", st)
adamc@589 770 | ERecord [(x, e, _)] =>
adamc@589 771 let
adamc@589 772 val (e, st) = jsE inner (e, st)
adamc@589 773 in
adamc@589 774 (strcat [str "{_x:", e, str "}"], st)
adamc@589 775 end
adamc@589 776 | ERecord ((x, e, _) :: xes) =>
adamc@589 777 let
adamc@589 778 val (e, st) = jsE inner (e, st)
adamc@589 779
adamc@589 780 val (es, st) =
adamc@589 781 foldr (fn ((x, e, _), (es, st)) =>
adamc@589 782 let
adamc@589 783 val (e, st) = jsE inner (e, st)
adamc@589 784 in
adamc@589 785 (str (",_" ^ x ^ ":")
adamc@589 786 :: e
adamc@589 787 :: es,
adamc@589 788 st)
adamc@589 789 end)
adamc@589 790 ([str "}"], st) xes
adamc@589 791 in
adamc@589 792 (strcat (str ("{_" ^ x ^ ":")
adamc@589 793 :: e
adamc@589 794 :: es),
adamc@589 795 st)
adamc@589 796 end
adamc@589 797 | EField (e, x) =>
adamc@589 798 let
adamc@589 799 val (e, st) = jsE inner (e, st)
adamc@589 800 in
adamc@589 801 (strcat [e,
adamc@589 802 str ("._" ^ x)], st)
adamc@589 803 end
adamc@589 804
adamc@591 805 | ECase (e', pes, {result, ...}) =>
adamc@591 806 if closedUpto inner e andalso List.all (fn (_, e) => closedUpto inner e) pes then
adamc@593 807 let
adamc@593 808 val (e', st) = quoteExp result ((ERel 0, loc), st)
adamc@593 809 in
adamc@593 810 ((ELet ("js", result, e, e'), loc),
adamc@593 811 st)
adamc@593 812 end
adamc@591 813 else
adamc@591 814 let
adamc@591 815 val plen = length pes
adamc@589 816
adamc@591 817 val (cases, st) = ListUtil.foldliMap
adamc@591 818 (fn (i, (p, e), st) =>
adamc@591 819 let
adamc@591 820 val (e, st) = jsE (inner + E.patBindsN p) (e, st)
adamc@591 821 val fail =
adamc@591 822 if i = plen - 1 then
adamc@591 823 str "pf()"
adamc@591 824 else
adamc@591 825 str ("c" ^ Int.toString (i+1) ^ "()")
adamc@591 826 val c = jsPat 0 inner p e fail
adamc@591 827 in
adamc@591 828 (strcat [str ("c" ^ Int.toString i ^ "=function(){return "),
adamc@591 829 c,
adamc@591 830 str "},"],
adamc@591 831 st)
adamc@591 832 end)
adamc@591 833 st pes
adamc@589 834
adamc@591 835 val (e, st) = jsE inner (e', st)
adamc@591 836 in
adamc@591 837 (strcat (str "("
adamc@591 838 :: List.revAppend (cases,
adamc@591 839 [str "d0=",
adamc@591 840 e,
adamc@591 841 str ",c0())"])), st)
adamc@591 842 end
adamc@589 843
adamc@589 844 | EStrcat (e1, e2) =>
adamc@589 845 let
adamc@589 846 val (e1, st) = jsE inner (e1, st)
adamc@589 847 val (e2, st) = jsE inner (e2, st)
adamc@589 848 in
adamc@589 849 (strcat [str "(", e1, str "+", e2, str ")"], st)
adamc@589 850 end
adamc@589 851
adamc@589 852 | EError (e, _) =>
adamc@589 853 let
adamc@589 854 val (e, st) = jsE inner (e, st)
adamc@589 855 in
adamc@589 856 (strcat [str "alert(\"ERROR: \"+", e, str ")"],
adamc@589 857 st)
adamc@589 858 end
adamc@589 859
adamc@589 860 | EWrite e =>
adamc@589 861 let
adamc@589 862 val (e, st) = jsE inner (e, st)
adamc@589 863 in
adamc@589 864 (strcat [str "document.write(",
adamc@589 865 e,
adamc@589 866 str ".v)"], st)
adamc@589 867 end
adamc@589 868
adamc@589 869 | ESeq (e1, e2) =>
adamc@589 870 let
adamc@589 871 val (e1, st) = jsE inner (e1, st)
adamc@589 872 val (e2, st) = jsE inner (e2, st)
adamc@589 873 in
adamc@589 874 (strcat [str "(", e1, str ",", e2, str ")"], st)
adamc@589 875 end
adamc@589 876 | ELet (_, _, e1, e2) =>
adamc@589 877 let
adamc@589 878 val (e1, st) = jsE inner (e1, st)
adamc@589 879 val (e2, st) = jsE (inner + 1) (e2, st)
adamc@589 880 in
adamc@589 881 (strcat [str ("(_" ^ Int.toString (len + inner) ^ "="),
adamc@589 882 e1,
adamc@589 883 str ",",
adamc@589 884 e2,
adamc@572 885 str ")"], st)
adamc@572 886 end
adamc@589 887
adamc@601 888 | EJavaScript (Source _, _, SOME _) => (e, st)
adamc@603 889 | EJavaScript (_, _, SOME e) =>
adamc@603 890 (strcat [str "\"cr(\"+ca(function(){return ",
adamc@603 891 e,
adamc@603 892 str "})+\")\""],
adamc@603 893 st)
adamc@590 894
adamc@589 895 | EClosure _ => unsupported "EClosure"
adamc@589 896 | EQuery _ => unsupported "Query"
adamc@589 897 | EDml _ => unsupported "DML"
adamc@589 898 | ENextval _ => unsupported "Nextval"
adamc@589 899 | EUnurlify _ => unsupported "EUnurlify"
adamc@601 900 | EJavaScript (_, e, _) =>
adamc@601 901 let
adamc@601 902 val (e, st) = jsE inner (e, st)
adamc@601 903 in
adamc@603 904 (strcat [str "\"cr(\"+ca(function(){return ",
adamc@603 905 e,
adamc@603 906 str "})+\")\""],
adamc@603 907 st)
adamc@601 908 end
adamc@590 909
adamc@589 910 | ESignalReturn e =>
adamc@572 911 let
adamc@572 912 val (e, st) = jsE inner (e, st)
adamc@572 913 in
adamc@589 914 (strcat [str "sr(",
adamc@589 915 e,
adamc@589 916 str ")"],
adamc@589 917 st)
adamc@589 918 end
adamc@589 919 | ESignalBind (e1, e2) =>
adamc@589 920 let
adamc@589 921 val (e1, st) = jsE inner (e1, st)
adamc@589 922 val (e2, st) = jsE inner (e2, st)
adamc@589 923 in
adamc@589 924 (strcat [str "sb(",
adamc@589 925 e1,
adamc@589 926 str ",",
adamc@589 927 e2,
adamc@589 928 str ")"],
adamc@589 929 st)
adamc@589 930 end
adamc@589 931 | ESignalSource e =>
adamc@589 932 let
adamc@589 933 val (e, st) = jsE inner (e, st)
adamc@589 934 in
adamc@589 935 (strcat [str "ss(",
adamc@589 936 e,
adamc@589 937 str ")"],
adamc@589 938 st)
adamc@572 939 end
adamc@608 940
adamc@614 941 | EServerCall (e, ek, t) =>
adamc@609 942 let
adamc@614 943 val (e, st) = jsE inner (e, st)
adamc@609 944 val (ek, st) = jsE inner (ek, st)
adamc@613 945 val (unurl, st) = unurlifyExp loc (t, st)
adamc@609 946 in
adamc@614 947 (strcat [str ("rc(\"" ^ !Monoize.urlPrefix ^ "\"+"),
adamc@614 948 e,
adamc@614 949 str (", function(s){var t=s.split(\"/\");var i=0;return "
adamc@613 950 ^ unurl ^ "},"),
adamc@609 951 ek,
adamc@609 952 str ")"],
adamc@609 953 st)
adamc@609 954 end
adamc@567 955 end
adamc@589 956 in
adamc@589 957 jsE
adamc@589 958 end
adamc@567 959
adamc@589 960 val decl : state -> decl -> decl * state =
adamc@589 961 U.Decl.foldMapB {typ = fn x => x,
adamc@589 962 exp = fn (env, e, st) =>
adamc@589 963 let
adamc@589 964 fun doCode m skip env orig e =
adamc@589 965 let
adamc@589 966 val len = length env
adamc@589 967 fun str s = (EPrim (Prim.String s), #2 e)
adamc@567 968
adamc@589 969 val locals = List.tabulate
adamc@589 970 (varDepth e,
adamc@589 971 fn i => str ("var _" ^ Int.toString (len + i) ^ ";"))
adamc@589 972 val (e, st) = jsExp m skip env 0 (e, st)
adamc@589 973 in
adamc@589 974 (EJavaScript (m, orig, SOME (strcat (#2 e) (locals @ [e]))), st)
adamc@589 975 end
adamc@589 976 in
adamc@589 977 case e of
adamc@651 978 EJavaScript (m, orig, NONE) =>
adamc@591 979 doCode m 0 env orig orig
adamc@589 980 | _ => (e, st)
adamc@589 981 end,
adamc@589 982 decl = fn (_, e, st) => (e, st),
adamc@589 983 bind = fn (env, U.Decl.RelE (_, t)) => t :: env
adamc@589 984 | (env, _) => env}
adamc@589 985 []
adamc@567 986
adamc@567 987 fun doDecl (d, st) =
adamc@567 988 let
adamc@567 989 val (d, st) = decl st d
adamc@567 990 in
adamc@567 991 (List.revAppend (#decls st, [d]),
adamc@567 992 {decls = [],
adamc@589 993 script = #script st,
adamc@595 994 included = #included st,
adamc@595 995 injectors = #injectors st,
adamc@638 996 decoders = #decoders st,
adamc@595 997 maxName = #maxName st})
adamc@567 998 end
adamc@567 999
adamc@567 1000 val (ds, st) = ListUtil.foldlMapConcat doDecl
adamc@567 1001 {decls = [],
adamc@589 1002 script = [],
adamc@595 1003 included = IS.empty,
adamc@595 1004 injectors = IM.empty,
adamc@638 1005 decoders = IM.empty,
adamc@595 1006 maxName = U.File.maxName file + 1}
adamc@567 1007 file
adamc@569 1008
adamc@569 1009 val inf = TextIO.openIn (OS.Path.joinDirFile {dir = Config.libJs, file = "urweb.js"})
adamc@569 1010 fun lines acc =
adamc@569 1011 case TextIO.inputLine inf of
adamc@569 1012 NONE => String.concat (rev acc)
adamc@569 1013 | SOME line => lines (line :: acc)
adamc@569 1014 val lines = lines []
adamc@567 1015 in
adamc@569 1016 TextIO.closeIn inf;
adamc@589 1017 (DJavaScript (lines ^ String.concat (rev (#script st))), ErrorMsg.dummySpan) :: ds
adamc@567 1018 end
adamc@567 1019
adamc@567 1020 end