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annotate src/jscomp.sml @ 587:4c899701bd28

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author Adam Chlipala <adamc@hcoop.net>
date Thu, 01 Jan 2009 11:16:57 -0500
parents 1c969230ee7f
children 5803b4f041cb
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@587 173 | PCon (_, PConFfi {mod = "Basis", con = "True", ...}, NONE) =>
adamc@587 174 strcat [str ("(d" ^ Int.toString depth ^ "?"),
adamc@587 175 succ,
adamc@587 176 str ":",
adamc@587 177 fail,
adamc@587 178 str ")"]
adamc@587 179 | PCon (_, PConFfi {mod = "Basis", con = "False", ...}, NONE) =>
adamc@587 180 strcat [str ("(d" ^ Int.toString depth ^ "?"),
adamc@587 181 fail,
adamc@587 182 str ":",
adamc@587 183 succ,
adamc@587 184 str ")"]
adamc@587 185 | PCon _ => raise Fail "PCon"
adamc@584 186 | PRecord xps =>
adamc@584 187 let
adamc@584 188 val (_, succ) = foldl
adamc@584 189 (fn ((x, p, _), (inner, succ)) =>
adamc@584 190 (inner + E.patBindsN p,
adamc@585 191 strcat [str ("(d" ^ Int.toString (depth+1) ^ "=d"
adamc@585 192 ^ Int.toString depth ^ "._" ^ x ^ ","),
adamc@585 193 jsPat (depth+1) inner p succ fail,
adamc@585 194 str ")"]))
adamc@584 195 (inner, succ) xps
adamc@584 196 in
adamc@584 197 succ
adamc@584 198 end
adamc@585 199 | PNone _ => strcat [str ("(d" ^ Int.toString depth ^ "?"),
adamc@584 200 fail,
adamc@584 201 str ":",
adamc@584 202 succ,
adamc@584 203 str ")"]
adamc@585 204 | PSome (_, p) => strcat [str ("(d" ^ Int.toString depth ^ "?"),
adamc@585 205 jsPat depth inner p succ fail,
adamc@584 206 str ":",
adamc@584 207 fail,
adamc@584 208 str ")"]
adamc@567 209 in
adamc@567 210 case #1 e of
adamc@584 211 EPrim p => (jsPrim p, st)
adamc@567 212 | ERel n =>
adamc@567 213 if n < inner then
adamc@583 214 (str ("_" ^ var n), st)
adamc@567 215 else
adamc@577 216 let
adamc@577 217 val n = n - inner
adamc@577 218 in
adamc@579 219 (quoteExp (List.nth (outer, n)) (ERel (n - skip), loc), st)
adamc@577 220 end
adamc@567 221 | ENamed _ => raise Fail "Named"
adamc@567 222 | ECon (_, pc, NONE) => (patCon pc, st)
adamc@567 223 | ECon (_, pc, SOME e) =>
adamc@567 224 let
adamc@567 225 val (s, st) = jsE inner (e, st)
adamc@567 226 in
adamc@567 227 (strcat [str "{n:",
adamc@567 228 patCon pc,
adamc@567 229 str ",v:",
adamc@567 230 s,
adamc@567 231 str "}"], st)
adamc@567 232 end
adamc@567 233 | ENone _ => (str "null", st)
adamc@567 234 | ESome (t, e) =>
adamc@567 235 let
adamc@567 236 val (e, st) = jsE inner (e, st)
adamc@567 237 in
adamc@567 238 (if isNullable t then
adamc@567 239 strcat [str "{v:", e, str "}"]
adamc@567 240 else
adamc@567 241 e, st)
adamc@567 242 end
adamc@567 243
adamc@572 244 | EFfi k =>
adamc@567 245 let
adamc@572 246 val name = case ffi k of
adamc@574 247 NONE => (EM.errorAt loc ("Unsupported FFI identifier " ^ #2 k ^ " in JavaScript");
adamc@572 248 "ERROR")
adamc@572 249 | SOME s => s
adamc@567 250 in
adamc@572 251 (str name, st)
adamc@567 252 end
adamc@572 253 | EFfiApp (m, x, args) =>
adamc@567 254 let
adamc@578 255 val args =
adamc@578 256 case (m, x, args) of
adamc@578 257 ("Basis", "new_client_source", [(EJavaScript (_, e, _), _)]) => [e]
adamc@578 258 | ("Basis", "set_client_source", [e1, (EJavaScript (_, e2, _), _)]) => [e1, e2]
adamc@578 259 | _ => args
adamc@578 260
adamc@572 261 val name = case ffi (m, x) of
adamc@574 262 NONE => (EM.errorAt loc ("Unsupported FFI function " ^ x ^ " in JavaScript");
adamc@572 263 "ERROR")
adamc@572 264 | SOME s => s
adamc@567 265 in
adamc@572 266 case args of
adamc@572 267 [] => (str (name ^ "()"), st)
adamc@572 268 | [e] =>
adamc@572 269 let
adamc@572 270 val (e, st) = jsE inner (e, st)
adamc@572 271 in
adamc@572 272 (strcat [str (name ^ "("),
adamc@572 273 e,
adamc@572 274 str ")"], st)
adamc@572 275 end
adamc@572 276 | e :: es =>
adamc@572 277 let
adamc@572 278 val (e, st) = jsE inner (e, st)
adamc@572 279 val (es, st) = ListUtil.foldlMapConcat
adamc@572 280 (fn (e, st) =>
adamc@572 281 let
adamc@572 282 val (e, st) = jsE inner (e, st)
adamc@572 283 in
adamc@572 284 ([str ",", e], st)
adamc@572 285 end)
adamc@572 286 st es
adamc@572 287 in
adamc@572 288 (strcat (str (name ^ "(")
adamc@572 289 :: e
adamc@572 290 :: es
adamc@572 291 @ [str ")"]), st)
adamc@572 292 end
adamc@567 293 end
adamc@567 294
adamc@567 295 | EApp (e1, e2) =>
adamc@567 296 let
adamc@567 297 val (e1, st) = jsE inner (e1, st)
adamc@567 298 val (e2, st) = jsE inner (e2, st)
adamc@567 299 in
adamc@567 300 (strcat [e1, str "(", e2, str ")"], st)
adamc@567 301 end
adamc@567 302 | EAbs (_, _, _, e) =>
adamc@567 303 let
adamc@567 304 val locals = List.tabulate
adamc@567 305 (varDepth e,
adamc@585 306 fn i => str ("var _" ^ Int.toString (len + inner + i + 1) ^ ";"))
adamc@567 307 val (e, st) = jsE (inner + 1) (e, st)
adamc@567 308 in
adamc@583 309 (strcat (str ("function(_"
adamc@567 310 ^ Int.toString (len + inner)
adamc@567 311 ^ "){")
adamc@567 312 :: locals
adamc@567 313 @ [str "return ",
adamc@567 314 e,
adamc@567 315 str "}"]),
adamc@567 316 st)
adamc@567 317 end
adamc@567 318
adamc@567 319 | EUnop (s, e) =>
adamc@567 320 let
adamc@567 321 val (e, st) = jsE inner (e, st)
adamc@567 322 in
adamc@567 323 (strcat [str ("(" ^ s),
adamc@567 324 e,
adamc@567 325 str ")"],
adamc@567 326 st)
adamc@567 327 end
adamc@567 328 | EBinop (s, e1, e2) =>
adamc@567 329 let
adamc@567 330 val (e1, st) = jsE inner (e1, st)
adamc@567 331 val (e2, st) = jsE inner (e2, st)
adamc@567 332 in
adamc@567 333 (strcat [str "(",
adamc@567 334 e1,
adamc@567 335 str s,
adamc@567 336 e2,
adamc@567 337 str ")"],
adamc@567 338 st)
adamc@567 339 end
adamc@567 340
adamc@567 341 | ERecord [] => (str "null", st)
adamc@567 342 | ERecord [(x, e, _)] =>
adamc@567 343 let
adamc@567 344 val (e, st) = jsE inner (e, st)
adamc@567 345 in
adamc@583 346 (strcat [str "{_x:", e, str "}"], st)
adamc@567 347 end
adamc@567 348 | ERecord ((x, e, _) :: xes) =>
adamc@567 349 let
adamc@567 350 val (e, st) = jsE inner (e, st)
adamc@567 351
adamc@567 352 val (es, st) =
adamc@567 353 foldr (fn ((x, e, _), (es, st)) =>
adamc@567 354 let
adamc@567 355 val (e, st) = jsE inner (e, st)
adamc@567 356 in
adamc@583 357 (str (",_" ^ x ^ ":")
adamc@567 358 :: e
adamc@567 359 :: es,
adamc@567 360 st)
adamc@567 361 end)
adamc@567 362 ([str "}"], st) xes
adamc@567 363 in
adamc@583 364 (strcat (str ("{_" ^ x ^ ":")
adamc@567 365 :: e
adamc@567 366 :: es),
adamc@567 367 st)
adamc@567 368 end
adamc@567 369 | EField (e, x) =>
adamc@567 370 let
adamc@567 371 val (e, st) = jsE inner (e, st)
adamc@567 372 in
adamc@567 373 (strcat [e,
adamc@583 374 str ("._" ^ x)], st)
adamc@567 375 end
adamc@567 376
adamc@584 377 | ECase (e, pes, _) =>
adamc@584 378 let
adamc@584 379 val plen = length pes
adamc@584 380
adamc@584 381 val (cases, st) = ListUtil.foldliMap
adamc@584 382 (fn (i, (p, e), st) =>
adamc@584 383 let
adamc@584 384 val (e, st) = jsE (inner + E.patBindsN p) (e, st)
adamc@584 385 val fail =
adamc@584 386 if i = plen - 1 then
adamc@584 387 str "pf()"
adamc@584 388 else
adamc@584 389 str ("c" ^ Int.toString (i+1) ^ "()")
adamc@585 390 val c = jsPat 0 inner p e fail
adamc@584 391 in
adamc@584 392 (strcat [str ("c" ^ Int.toString i ^ "=function(){return "),
adamc@584 393 c,
adamc@584 394 str "},"],
adamc@584 395 st)
adamc@584 396 end)
adamc@584 397 st pes
adamc@584 398
adamc@584 399 val (e, st) = jsE inner (e, st)
adamc@584 400 in
adamc@584 401 (strcat (str "("
adamc@584 402 :: List.revAppend (cases,
adamc@585 403 [str "d0=",
adamc@584 404 e,
adamc@584 405 str ",c0())"])), st)
adamc@584 406 end
adamc@567 407
adamc@567 408 | EStrcat (e1, e2) =>
adamc@567 409 let
adamc@567 410 val (e1, st) = jsE inner (e1, st)
adamc@567 411 val (e2, st) = jsE inner (e2, st)
adamc@567 412 in
adamc@567 413 (strcat [str "(", e1, str "+", e2, str ")"], st)
adamc@567 414 end
adamc@567 415
adamc@567 416 | EError (e, _) =>
adamc@567 417 let
adamc@567 418 val (e, st) = jsE inner (e, st)
adamc@567 419 in
adamc@567 420 (strcat [str "alert(\"ERROR: \"+", e, str ")"],
adamc@567 421 st)
adamc@567 422 end
adamc@567 423
adamc@568 424 | EWrite e =>
adamc@568 425 let
adamc@568 426 val (e, st) = jsE inner (e, st)
adamc@568 427 in
adamc@568 428 (strcat [str "document.write(",
adamc@568 429 e,
adamc@569 430 str ".v)"], st)
adamc@568 431 end
adamc@567 432
adamc@567 433 | ESeq (e1, e2) =>
adamc@567 434 let
adamc@567 435 val (e1, st) = jsE inner (e1, st)
adamc@567 436 val (e2, st) = jsE inner (e2, st)
adamc@567 437 in
adamc@567 438 (strcat [str "(", e1, str ",", e2, str ")"], st)
adamc@567 439 end
adamc@567 440 | ELet (_, _, e1, e2) =>
adamc@567 441 let
adamc@567 442 val (e1, st) = jsE inner (e1, st)
adamc@567 443 val (e2, st) = jsE (inner + 1) (e2, st)
adamc@567 444 in
adamc@583 445 (strcat [str ("(_" ^ Int.toString (len + inner) ^ "="),
adamc@567 446 e1,
adamc@567 447 str ",",
adamc@567 448 e2,
adamc@567 449 str ")"], st)
adamc@567 450 end
adamc@567 451
adamc@567 452 | EClosure _ => unsupported "EClosure"
adamc@567 453 | EQuery _ => unsupported "Query"
adamc@567 454 | EDml _ => unsupported "DML"
adamc@567 455 | ENextval _ => unsupported "Nextval"
adamc@567 456 | EUnurlify _ => unsupported "EUnurlify"
adamc@567 457 | EJavaScript _ => unsupported "Nested JavaScript"
adamc@568 458 | ESignalReturn e =>
adamc@568 459 let
adamc@568 460 val (e, st) = jsE inner (e, st)
adamc@568 461 in
adamc@572 462 (strcat [str "sr(",
adamc@569 463 e,
adamc@569 464 str ")"],
adamc@568 465 st)
adamc@568 466 end
adamc@572 467 | ESignalBind (e1, e2) =>
adamc@572 468 let
adamc@572 469 val (e1, st) = jsE inner (e1, st)
adamc@572 470 val (e2, st) = jsE inner (e2, st)
adamc@572 471 in
adamc@572 472 (strcat [str "sb(",
adamc@572 473 e1,
adamc@572 474 str ",",
adamc@572 475 e2,
adamc@572 476 str ")"],
adamc@572 477 st)
adamc@572 478 end
adamc@574 479 | ESignalSource e =>
adamc@574 480 let
adamc@574 481 val (e, st) = jsE inner (e, st)
adamc@574 482 in
adamc@574 483 (strcat [str "ss(",
adamc@574 484 e,
adamc@574 485 str ")"],
adamc@574 486 st)
adamc@574 487 end
adamc@567 488 end
adamc@567 489 in
adamc@567 490 jsE
adamc@567 491 end
adamc@567 492
adamc@567 493 val decl : state -> decl -> decl * state =
adamc@567 494 U.Decl.foldMapB {typ = fn x => x,
adamc@567 495 exp = fn (env, e, st) =>
adamc@568 496 let
adamc@579 497 fun doCode m skip env orig e =
adamc@568 498 let
adamc@568 499 val len = length env
adamc@568 500 fun str s = (EPrim (Prim.String s), #2 e)
adamc@568 501
adamc@568 502 val locals = List.tabulate
adamc@568 503 (varDepth e,
adamc@583 504 fn i => str ("var _" ^ Int.toString (len + i) ^ ";"))
adamc@579 505 val (e, st) = jsExp m skip env 0 (e, st)
adamc@568 506 in
adamc@578 507 (EJavaScript (m, orig, SOME (strcat (#2 e) (locals @ [e]))), st)
adamc@568 508 end
adamc@568 509 in
adamc@568 510 case e of
adamc@579 511 EJavaScript (m, orig as (EAbs (_, t, _, e), _), _) => doCode m 1 (t :: env) orig e
adamc@579 512 | EJavaScript (m, e, _) => doCode m 0 env e e
adamc@568 513 | _ => (e, st)
adamc@568 514 end,
adamc@567 515 decl = fn (_, e, st) => (e, st),
adamc@567 516 bind = fn (env, U.Decl.RelE (_, t)) => t :: env
adamc@567 517 | (env, _) => env}
adamc@567 518 []
adamc@567 519
adamc@567 520 fun process file =
adamc@567 521 let
adamc@567 522 fun doDecl (d, st) =
adamc@567 523 let
adamc@567 524 val (d, st) = decl st d
adamc@567 525 in
adamc@567 526 (List.revAppend (#decls st, [d]),
adamc@567 527 {decls = [],
adamc@567 528 script = #script st})
adamc@567 529 end
adamc@567 530
adamc@567 531 val (ds, st) = ListUtil.foldlMapConcat doDecl
adamc@567 532 {decls = [],
adamc@567 533 script = ""}
adamc@567 534 file
adamc@569 535
adamc@569 536 val inf = TextIO.openIn (OS.Path.joinDirFile {dir = Config.libJs, file = "urweb.js"})
adamc@569 537 fun lines acc =
adamc@569 538 case TextIO.inputLine inf of
adamc@569 539 NONE => String.concat (rev acc)
adamc@569 540 | SOME line => lines (line :: acc)
adamc@569 541 val lines = lines []
adamc@567 542 in
adamc@569 543 TextIO.closeIn inf;
adamc@569 544 (DJavaScript lines, ErrorMsg.dummySpan) :: ds
adamc@567 545 end
adamc@567 546
adamc@567 547 end