Mercurial > urweb

annotate src/jscomp.sml @ 595:02c8ab9f3e8b

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Injected an enumeration
author Adam Chlipala <adamc@hcoop.net>
date Thu, 08 Jan 2009 09:57:45 -0500
parents 55829473f6a7
children d1ec54288b1a
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@586 40 (("Basis", "htmlifyBool"), "bs"),
adamc@583 41 (("Basis", "htmlifyFloat"), "ts"),
adamc@582 42 (("Basis", "htmlifyInt"), "ts"),
adamc@574 43 (("Basis", "htmlifyString"), "escape"),
adamc@579 44 (("Basis", "new_client_source"), "sc"),
adamc@579 45 (("Basis", "set_client_source"), "sv")]
adamc@572 46
adamc@572 47 structure FM = BinaryMapFn(struct
adamc@572 48 type ord_key = string * string
adamc@572 49 fun compare ((m1, x1), (m2, x2)) =
adamc@572 50 Order.join (String.compare (m1, m2),
adamc@572 51 fn () => String.compare (x1, x2))
adamc@572 52 end)
adamc@572 53
adamc@572 54 val funcs = foldl (fn ((k, v), m) => FM.insert (m, k, v)) FM.empty funcs
adamc@572 55
adamc@572 56 fun ffi k = FM.find (funcs, k)
adamc@572 57
adamc@567 58 type state = {
adamc@567 59 decls : decl list,
adamc@589 60 script : string list,
adamc@595 61 included : IS.set,
adamc@595 62 injectors : int IM.map,
adamc@595 63 maxName : int
adamc@567 64 }
adamc@567 65
adamc@567 66 fun varDepth (e, _) =
adamc@567 67 case e of
adamc@567 68 EPrim _ => 0
adamc@567 69 | ERel _ => 0
adamc@567 70 | ENamed _ => 0
adamc@567 71 | ECon (_, _, NONE) => 0
adamc@567 72 | ECon (_, _, SOME e) => varDepth e
adamc@567 73 | ENone _ => 0
adamc@567 74 | ESome (_, e) => varDepth e
adamc@567 75 | EFfi _ => 0
adamc@567 76 | EFfiApp (_, _, es) => foldl Int.max 0 (map varDepth es)
adamc@567 77 | EApp (e1, e2) => Int.max (varDepth e1, varDepth e2)
adamc@567 78 | EAbs _ => 0
adamc@567 79 | EUnop (_, e) => varDepth e
adamc@567 80 | EBinop (_, e1, e2) => Int.max (varDepth e1, varDepth e2)
adamc@567 81 | ERecord xes => foldl Int.max 0 (map (fn (_, e, _) => varDepth e) xes)
adamc@567 82 | EField (e, _) => varDepth e
adamc@567 83 | ECase (e, pes, _) =>
adamc@567 84 foldl Int.max (varDepth e)
adamc@567 85 (map (fn (p, e) => E.patBindsN p + varDepth e) pes)
adamc@567 86 | EStrcat (e1, e2) => Int.max (varDepth e1, varDepth e2)
adamc@567 87 | EError (e, _) => varDepth e
adamc@567 88 | EWrite e => varDepth e
adamc@567 89 | ESeq (e1, e2) => Int.max (varDepth e1, varDepth e2)
adamc@567 90 | ELet (_, _, e1, e2) => Int.max (varDepth e1, 1 + varDepth e2)
adamc@567 91 | EClosure _ => 0
adamc@567 92 | EQuery _ => 0
adamc@567 93 | EDml _ => 0
adamc@567 94 | ENextval _ => 0
adamc@567 95 | EUnurlify _ => 0
adamc@567 96 | EJavaScript _ => 0
adamc@568 97 | ESignalReturn e => varDepth e
adamc@572 98 | ESignalBind (e1, e2) => Int.max (varDepth e1, varDepth e2)
adamc@574 99 | ESignalSource e => varDepth e
adamc@567 100
adamc@591 101 fun closedUpto d =
adamc@591 102 let
adamc@591 103 fun cu inner (e, _) =
adamc@591 104 case e of
adamc@591 105 EPrim _ => true
adamc@591 106 | ERel n => n < inner orelse n - inner >= d
adamc@591 107 | ENamed _ => true
adamc@591 108 | ECon (_, _, NONE) => true
adamc@591 109 | ECon (_, _, SOME e) => cu inner e
adamc@591 110 | ENone _ => true
adamc@591 111 | ESome (_, e) => cu inner e
adamc@591 112 | EFfi _ => true
adamc@591 113 | EFfiApp (_, _, es) => List.all (cu inner) es
adamc@591 114 | EApp (e1, e2) => cu inner e1 andalso cu inner e2
adamc@591 115 | EAbs (_, _, _, e) => cu (inner + 1) e
adamc@591 116 | EUnop (_, e) => cu inner e
adamc@591 117 | EBinop (_, e1, e2) => cu inner e1 andalso cu inner e2
adamc@591 118 | ERecord xes => List.all (fn (_, e, _) => cu inner e) xes
adamc@591 119 | EField (e, _) => cu inner e
adamc@591 120 | ECase (e, pes, _) =>
adamc@591 121 cu inner e
adamc@591 122 andalso List.all (fn (p, e) => cu (inner + E.patBindsN p) e) pes
adamc@591 123 | EStrcat (e1, e2) => cu inner e1 andalso cu inner e2
adamc@591 124 | EError (e, _) => cu inner e
adamc@591 125 | EWrite e => cu inner e
adamc@591 126 | ESeq (e1, e2) => cu inner e1 andalso cu inner e2
adamc@591 127 | ELet (_, _, e1, e2) => cu inner e1 andalso cu (inner + 1) e2
adamc@591 128 | EClosure (_, es) => List.all (cu inner) es
adamc@591 129 | EQuery {query, body, initial, ...} =>
adamc@591 130 cu inner query
adamc@591 131 andalso cu (inner + 2) body
adamc@591 132 andalso cu inner initial
adamc@591 133 | EDml e => cu inner e
adamc@591 134 | ENextval e => cu inner e
adamc@591 135 | EUnurlify (e, _) => cu inner e
adamc@591 136 | EJavaScript (_, e, _) => cu inner e
adamc@591 137 | ESignalReturn e => cu inner e
adamc@591 138 | ESignalBind (e1, e2) => cu inner e1 andalso cu inner e2
adamc@591 139 | ESignalSource e => cu inner e
adamc@591 140 in
adamc@591 141 cu 0
adamc@591 142 end
adamc@591 143
adamc@568 144 fun strcat loc es =
adamc@568 145 case es of
adamc@568 146 [] => (EPrim (Prim.String ""), loc)
adamc@568 147 | [x] => x
adamc@568 148 | x :: es' => (EStrcat (x, strcat loc es'), loc)
adamc@568 149
adamc@589 150 fun process file =
adamc@567 151 let
adamc@595 152 val nameds =
adamc@595 153 foldl (fn ((DVal (_, n, t, e, _), _), nameds) => IM.insert (nameds, n, e)
adamc@595 154 | ((DValRec vis, _), nameds) =>
adamc@595 155 foldl (fn ((_, n, _, e, _), nameds) => IM.insert (nameds, n, e))
adamc@595 156 nameds vis
adamc@595 157 | (_, state) => state)
adamc@595 158 IM.empty file
adamc@567 159
adamc@590 160 fun str loc s = (EPrim (Prim.String s), loc)
adamc@590 161
adamc@594 162 fun isNullable (t, _) =
adamc@594 163 case t of
adamc@594 164 TOption _ => true
adamc@594 165 | TRecord [] => true
adamc@594 166 | _ => false
adamc@594 167
adamc@593 168 fun quoteExp loc (t : typ) (e, st) =
adamc@590 169 case #1 t of
adamc@593 170 TSource => (strcat loc [str loc "s",
adamc@593 171 (EFfiApp ("Basis", "htmlifyInt", [e]), loc)], st)
adamc@590 172
adamc@593 173 | TRecord [] => (str loc "null", st)
adamc@593 174 | TRecord [(x, t)] =>
adamc@593 175 let
adamc@593 176 val (e, st) = quoteExp loc t ((EField (e, x), loc), st)
adamc@593 177 in
adamc@593 178 (strcat loc [str loc ("{_" ^ x ^ ":"),
adamc@593 179 e,
adamc@593 180 str loc "}"], st)
adamc@593 181 end
adamc@593 182 | TRecord ((x, t) :: xts) =>
adamc@593 183 let
adamc@593 184 val (e', st) = quoteExp loc t ((EField (e, x), loc), st)
adamc@593 185 val (es, st) = ListUtil.foldlMap
adamc@593 186 (fn ((x, t), st) =>
adamc@593 187 let
adamc@593 188 val (e, st) = quoteExp loc t ((EField (e, x), loc), st)
adamc@593 189 in
adamc@593 190 (strcat loc [str loc (",_" ^ x ^ ":"), e], st)
adamc@593 191 end)
adamc@593 192 st xts
adamc@593 193 in
adamc@593 194 (strcat loc (str loc ("{_" ^ x ^ ":")
adamc@593 195 :: e'
adamc@593 196 :: es
adamc@593 197 @ [str loc "}"]), st)
adamc@593 198 end
adamc@590 199
adamc@593 200 | TFfi ("Basis", "string") => ((EFfiApp ("Basis", "jsifyString", [e]), loc), st)
adamc@593 201 | TFfi ("Basis", "int") => ((EFfiApp ("Basis", "htmlifyInt", [e]), loc), st)
adamc@593 202 | TFfi ("Basis", "float") => ((EFfiApp ("Basis", "htmlifyFloat", [e]), loc), st)
adamc@593 203
adamc@593 204 | TFfi ("Basis", "bool") => ((ECase (e,
adamc@593 205 [((PCon (Enum, PConFfi {mod = "Basis",
adamc@593 206 datatyp = "bool",
adamc@593 207 con = "True",
adamc@593 208 arg = NONE}, NONE), loc),
adamc@593 209 str loc "true"),
adamc@593 210 ((PCon (Enum, PConFfi {mod = "Basis",
adamc@593 211 datatyp = "bool",
adamc@593 212 con = "False",
adamc@593 213 arg = NONE}, NONE), loc),
adamc@593 214 str loc "false")],
adamc@593 215 {disc = (TFfi ("Basis", "bool"), loc),
adamc@593 216 result = (TFfi ("Basis", "string"), loc)}), loc),
adamc@593 217 st)
adamc@592 218
adamc@594 219 | TOption t =>
adamc@594 220 let
adamc@594 221 val (e', st) = quoteExp loc t ((ERel 0, loc), st)
adamc@594 222 in
adamc@594 223 ((ECase (e,
adamc@594 224 [((PNone t, loc),
adamc@594 225 str loc "null"),
adamc@594 226 ((PSome (t, (PVar ("x", t), loc)), loc),
adamc@594 227 if isNullable t then
adamc@594 228 strcat loc [str loc "{v:", e', str loc "}"]
adamc@594 229 else
adamc@594 230 e')],
adamc@594 231 {disc = (TOption t, loc),
adamc@594 232 result = (TFfi ("Basis", "string"), loc)}), loc),
adamc@594 233 st)
adamc@594 234 end
adamc@594 235
adamc@595 236 | TDatatype (n, ref (dk, cs)) =>
adamc@595 237 (case IM.find (#injectors st, n) of
adamc@595 238 SOME n' => ((EApp ((ENamed n', loc), e), loc), st)
adamc@595 239 | NONE =>
adamc@595 240 let
adamc@595 241 val dk = ElabUtil.classifyDatatype cs
adamc@595 242
adamc@595 243 val n' = #maxName st
adamc@595 244 val st = {decls = #decls st,
adamc@595 245 script = #script st,
adamc@595 246 included = #included st,
adamc@595 247 injectors = IM.insert (#injectors st, n, n'),
adamc@595 248 maxName = n' + 1}
adamc@595 249
adamc@595 250 val (pes, st) = ListUtil.foldlMap
adamc@595 251 (fn ((_, cn, NONE), st) =>
adamc@595 252 (((PCon (dk, PConVar cn, NONE), loc),
adamc@595 253 str loc (Int.toString cn)),
adamc@595 254 st)
adamc@595 255 | ((_, cn, SOME t), st) =>
adamc@595 256 let
adamc@595 257 val (e, st) = quoteExp loc t ((ERel 0, loc), st)
adamc@595 258 in
adamc@595 259 (((PCon (dk, PConVar cn, SOME (PVar ("x", t), loc)), loc),
adamc@595 260 e),
adamc@595 261 st)
adamc@595 262 end)
adamc@595 263 st cs
adamc@595 264
adamc@595 265 val s = (TFfi ("Basis", "string"), loc)
adamc@595 266 val body = (ECase ((ERel 0, loc), pes,
adamc@595 267 {disc = t, result = s}), loc)
adamc@595 268 val body = (EAbs ("x", t, s, body), loc)
adamc@595 269
adamc@595 270 val st = {decls = (DValRec [("jsify", n', (TFun (t, s), loc),
adamc@595 271 body, "jsify")], loc) :: #decls st,
adamc@595 272 script = #script st,
adamc@595 273 included = #included st,
adamc@595 274 injectors = #injectors st,
adamc@595 275 maxName = #maxName st}
adamc@595 276 in
adamc@595 277 ((EApp ((ENamed n', loc), e), loc), st)
adamc@595 278 end)
adamc@595 279
adamc@590 280 | _ => (EM.errorAt loc "Don't know how to embed type in JavaScript";
adamc@590 281 Print.prefaces "Can't embed" [("t", MonoPrint.p_typ MonoEnv.empty t)];
adamc@593 282 (str loc "ERROR", st))
adamc@590 283
adamc@589 284 fun jsExp mode skip outer =
adamc@567 285 let
adamc@589 286 val len = length outer
adamc@567 287
adamc@589 288 fun jsE inner (e as (_, loc), st) =
adamc@589 289 let
adamc@590 290 val str = str loc
adamc@567 291
adamc@589 292 fun var n = Int.toString (len + inner - n - 1)
adamc@567 293
adamc@589 294 fun patCon pc =
adamc@589 295 case pc of
adamc@589 296 PConVar n => str (Int.toString n)
adamc@589 297 | PConFfi {mod = "Basis", con = "True", ...} => str "true"
adamc@589 298 | PConFfi {mod = "Basis", con = "False", ...} => str "false"
adamc@589 299 | PConFfi {con, ...} => str ("\"_" ^ con ^ "\"")
adamc@567 300
adamc@591 301 fun unsupported s =
adamc@591 302 (EM.errorAt loc (s ^ " in code to be compiled to JavaScript[2]");
adamc@591 303 (str "ERROR", st))
adamc@577 304
adamc@589 305 val strcat = strcat loc
adamc@584 306
adamc@589 307 fun jsPrim p =
adamc@589 308 case p of
adamc@589 309 Prim.String s =>
adamc@589 310 str ("\""
adamc@589 311 ^ String.translate (fn #"'" =>
adamc@589 312 if mode = Attribute then
adamc@589 313 "\\047"
adamc@589 314 else
adamc@589 315 "'"
adamc@589 316 | #"\"" => "\\\""
adamc@589 317 | #"<" =>
adamc@589 318 if mode = Script then
adamc@589 319 "<"
adamc@589 320 else
adamc@589 321 "\\074"
adamc@589 322 | #"\\" => "\\\\"
adamc@589 323 | ch => String.str ch) s
adamc@589 324 ^ "\"")
adamc@589 325 | _ => str (Prim.toString p)
adamc@589 326
adamc@589 327 fun jsPat depth inner (p, _) succ fail =
adamc@589 328 case p of
adamc@589 329 PWild => succ
adamc@589 330 | PVar _ => strcat [str ("(_" ^ Int.toString (len + inner) ^ "=d"
adamc@589 331 ^ Int.toString depth ^ ","),
adamc@589 332 succ,
adamc@589 333 str ")"]
adamc@589 334 | PPrim p => strcat [str ("(d" ^ Int.toString depth ^ "=="),
adamc@589 335 jsPrim p,
adamc@589 336 str "?",
adamc@589 337 succ,
adamc@589 338 str ":",
adamc@589 339 fail,
adamc@589 340 str ")"]
adamc@589 341 | PCon (_, PConFfi {mod = "Basis", con = "True", ...}, NONE) =>
adamc@589 342 strcat [str ("(d" ^ Int.toString depth ^ "?"),
adamc@589 343 succ,
adamc@589 344 str ":",
adamc@589 345 fail,
adamc@589 346 str ")"]
adamc@589 347 | PCon (_, PConFfi {mod = "Basis", con = "False", ...}, NONE) =>
adamc@589 348 strcat [str ("(d" ^ Int.toString depth ^ "?"),
adamc@589 349 fail,
adamc@589 350 str ":",
adamc@589 351 succ,
adamc@589 352 str ")"]
adamc@589 353 | PCon (_, pc, NONE) =>
adamc@589 354 strcat [str ("(d" ^ Int.toString depth ^ "=="),
adamc@589 355 patCon pc,
adamc@589 356 str "?",
adamc@589 357 succ,
adamc@589 358 str ":",
adamc@589 359 fail,
adamc@589 360 str ")"]
adamc@589 361 | PCon (_, pc, SOME p) =>
adamc@589 362 strcat [str ("(d" ^ Int.toString depth ^ ".n=="),
adamc@589 363 patCon pc,
adamc@589 364 str ("?(d" ^ Int.toString depth ^ "=d" ^ Int.toString depth ^ ".v,"),
adamc@589 365 jsPat depth inner p succ fail,
adamc@589 366 str "):",
adamc@589 367 fail,
adamc@589 368 str ")"]
adamc@589 369 | PRecord xps =>
adamc@589 370 let
adamc@589 371 val (_, succ) = foldl
adamc@589 372 (fn ((x, p, _), (inner, succ)) =>
adamc@589 373 (inner + E.patBindsN p,
adamc@589 374 strcat [str ("(d" ^ Int.toString (depth+1) ^ "=d"
adamc@589 375 ^ Int.toString depth ^ "._" ^ x ^ ","),
adamc@589 376 jsPat (depth+1) inner p succ fail,
adamc@589 377 str ")"]))
adamc@589 378 (inner, succ) xps
adamc@589 379 in
adamc@589 380 succ
adamc@589 381 end
adamc@589 382 | PNone _ => strcat [str ("(d" ^ Int.toString depth ^ "?"),
adamc@589 383 fail,
adamc@589 384 str ":",
adamc@589 385 succ,
adamc@589 386 str ")"]
adamc@594 387 | PSome (t, p) => strcat (str ("(d" ^ Int.toString depth ^ "?")
adamc@594 388 :: (if isNullable t then
adamc@594 389 [str ("d" ^ Int.toString depth
adamc@594 390 ^ "=d" ^ Int.toString depth ^ ".v")]
adamc@594 391 else
adamc@594 392 [])
adamc@594 393 @ [jsPat depth inner p succ fail,
adamc@594 394 str ":",
adamc@594 395 fail,
adamc@594 396 str ")"])
adamc@589 397
adamc@589 398 fun deStrcat (e, _) =
adamc@589 399 case e of
adamc@589 400 EPrim (Prim.String s) => s
adamc@589 401 | EStrcat (e1, e2) => deStrcat e1 ^ deStrcat e2
adamc@589 402 | _ => raise Fail "Jscomp: deStrcat"
adamc@590 403
adamc@590 404 val quoteExp = quoteExp loc
adamc@567 405 in
adamc@590 406 (*Print.prefaces "jsE" [("e", MonoPrint.p_exp MonoEnv.empty e)];*)
adamc@590 407
adamc@589 408 case #1 e of
adamc@589 409 EPrim p => (jsPrim p, st)
adamc@589 410 | ERel n =>
adamc@589 411 if n < inner then
adamc@589 412 (str ("_" ^ var n), st)
adamc@589 413 else
adamc@589 414 let
adamc@589 415 val n = n - inner
adamc@589 416 in
adamc@593 417 quoteExp (List.nth (outer, n)) ((ERel (n - skip), loc), st)
adamc@589 418 end
adamc@567 419
adamc@589 420 | ENamed n =>
adamc@589 421 let
adamc@589 422 val st =
adamc@589 423 if IS.member (#included st, n) then
adamc@589 424 st
adamc@589 425 else
adamc@589 426 case IM.find (nameds, n) of
adamc@589 427 NONE => raise Fail "Jscomp: Unbound ENamed"
adamc@589 428 | SOME e =>
adamc@589 429 let
adamc@589 430 val st = {decls = #decls st,
adamc@589 431 script = #script st,
adamc@595 432 included = IS.add (#included st, n),
adamc@595 433 injectors = #injectors st,
adamc@595 434 maxName = #maxName st}
adamc@578 435
adamc@589 436 val (e, st) = jsExp mode skip [] 0 (e, st)
adamc@589 437 val e = deStrcat e
adamc@589 438
adamc@589 439 val sc = "_n" ^ Int.toString n ^ "=" ^ e ^ ";\n"
adamc@589 440 in
adamc@589 441 {decls = #decls st,
adamc@589 442 script = sc :: #script st,
adamc@595 443 included = #included st,
adamc@595 444 injectors = #injectors st,
adamc@595 445 maxName = #maxName st}
adamc@589 446 end
adamc@589 447 in
adamc@589 448 (str ("_n" ^ Int.toString n), st)
adamc@589 449 end
adamc@589 450
adamc@589 451 | ECon (_, pc, NONE) => (patCon pc, st)
adamc@589 452 | ECon (_, pc, SOME e) =>
adamc@589 453 let
adamc@589 454 val (s, st) = jsE inner (e, st)
adamc@589 455 in
adamc@589 456 (strcat [str "{n:",
adamc@589 457 patCon pc,
adamc@589 458 str ",v:",
adamc@589 459 s,
adamc@589 460 str "}"], st)
adamc@589 461 end
adamc@589 462 | ENone _ => (str "null", st)
adamc@589 463 | ESome (t, e) =>
adamc@572 464 let
adamc@572 465 val (e, st) = jsE inner (e, st)
adamc@572 466 in
adamc@589 467 (if isNullable t then
adamc@589 468 strcat [str "{v:", e, str "}"]
adamc@589 469 else
adamc@589 470 e, st)
adamc@589 471 end
adamc@589 472
adamc@589 473 | EFfi k =>
adamc@589 474 let
adamc@589 475 val name = case ffi k of
adamc@589 476 NONE => (EM.errorAt loc ("Unsupported FFI identifier " ^ #2 k
adamc@589 477 ^ " in JavaScript");
adamc@589 478 "ERROR")
adamc@589 479 | SOME s => s
adamc@589 480 in
adamc@589 481 (str name, st)
adamc@589 482 end
adamc@589 483 | EFfiApp (m, x, args) =>
adamc@589 484 let
adamc@589 485 val args =
adamc@589 486 case (m, x, args) of
adamc@589 487 ("Basis", "new_client_source", [(EJavaScript (_, e, _), _)]) => [e]
adamc@589 488 | ("Basis", "set_client_source", [e1, (EJavaScript (_, e2, _), _)]) => [e1, e2]
adamc@589 489 | _ => args
adamc@589 490
adamc@589 491 val name = case ffi (m, x) of
adamc@589 492 NONE => (EM.errorAt loc ("Unsupported FFI function "
adamc@589 493 ^ x ^ " in JavaScript");
adamc@589 494 "ERROR")
adamc@589 495 | SOME s => s
adamc@589 496 in
adamc@589 497 case args of
adamc@589 498 [] => (str (name ^ "()"), st)
adamc@589 499 | [e] =>
adamc@589 500 let
adamc@589 501 val (e, st) = jsE inner (e, st)
adamc@589 502 in
adamc@589 503 (strcat [str (name ^ "("),
adamc@589 504 e,
adamc@589 505 str ")"], st)
adamc@589 506 end
adamc@589 507 | e :: es =>
adamc@589 508 let
adamc@589 509 val (e, st) = jsE inner (e, st)
adamc@589 510 val (es, st) = ListUtil.foldlMapConcat
adamc@589 511 (fn (e, st) =>
adamc@589 512 let
adamc@589 513 val (e, st) = jsE inner (e, st)
adamc@589 514 in
adamc@589 515 ([str ",", e], st)
adamc@589 516 end)
adamc@589 517 st es
adamc@589 518 in
adamc@589 519 (strcat (str (name ^ "(")
adamc@589 520 :: e
adamc@589 521 :: es
adamc@589 522 @ [str ")"]), st)
adamc@589 523 end
adamc@589 524 end
adamc@589 525
adamc@589 526 | EApp (e1, e2) =>
adamc@589 527 let
adamc@589 528 val (e1, st) = jsE inner (e1, st)
adamc@589 529 val (e2, st) = jsE inner (e2, st)
adamc@589 530 in
adamc@589 531 (strcat [e1, str "(", e2, str ")"], st)
adamc@589 532 end
adamc@589 533 | EAbs (_, _, _, e) =>
adamc@589 534 let
adamc@589 535 val locals = List.tabulate
adamc@589 536 (varDepth e,
adamc@589 537 fn i => str ("var _" ^ Int.toString (len + inner + i + 1) ^ ";"))
adamc@589 538 val (e, st) = jsE (inner + 1) (e, st)
adamc@589 539 in
adamc@589 540 (strcat (str ("function(_"
adamc@589 541 ^ Int.toString (len + inner)
adamc@589 542 ^ "){")
adamc@589 543 :: locals
adamc@589 544 @ [str "return ",
adamc@589 545 e,
adamc@589 546 str "}"]),
adamc@589 547 st)
adamc@589 548 end
adamc@589 549
adamc@589 550 | EUnop (s, e) =>
adamc@589 551 let
adamc@589 552 val (e, st) = jsE inner (e, st)
adamc@589 553 in
adamc@589 554 (strcat [str ("(" ^ s),
adamc@572 555 e,
adamc@589 556 str ")"],
adamc@589 557 st)
adamc@589 558 end
adamc@589 559 | EBinop (s, e1, e2) =>
adamc@589 560 let
adamc@589 561 val (e1, st) = jsE inner (e1, st)
adamc@589 562 val (e2, st) = jsE inner (e2, st)
adamc@589 563 in
adamc@589 564 (strcat [str "(",
adamc@589 565 e1,
adamc@589 566 str s,
adamc@589 567 e2,
adamc@589 568 str ")"],
adamc@589 569 st)
adamc@589 570 end
adamc@589 571
adamc@589 572 | ERecord [] => (str "null", st)
adamc@589 573 | ERecord [(x, e, _)] =>
adamc@589 574 let
adamc@589 575 val (e, st) = jsE inner (e, st)
adamc@589 576 in
adamc@589 577 (strcat [str "{_x:", e, str "}"], st)
adamc@589 578 end
adamc@589 579 | ERecord ((x, e, _) :: xes) =>
adamc@589 580 let
adamc@589 581 val (e, st) = jsE inner (e, st)
adamc@589 582
adamc@589 583 val (es, st) =
adamc@589 584 foldr (fn ((x, e, _), (es, st)) =>
adamc@589 585 let
adamc@589 586 val (e, st) = jsE inner (e, st)
adamc@589 587 in
adamc@589 588 (str (",_" ^ x ^ ":")
adamc@589 589 :: e
adamc@589 590 :: es,
adamc@589 591 st)
adamc@589 592 end)
adamc@589 593 ([str "}"], st) xes
adamc@589 594 in
adamc@589 595 (strcat (str ("{_" ^ x ^ ":")
adamc@589 596 :: e
adamc@589 597 :: es),
adamc@589 598 st)
adamc@589 599 end
adamc@589 600 | EField (e, x) =>
adamc@589 601 let
adamc@589 602 val (e, st) = jsE inner (e, st)
adamc@589 603 in
adamc@589 604 (strcat [e,
adamc@589 605 str ("._" ^ x)], st)
adamc@589 606 end
adamc@589 607
adamc@591 608 | ECase (e', pes, {result, ...}) =>
adamc@591 609 if closedUpto inner e andalso List.all (fn (_, e) => closedUpto inner e) pes then
adamc@593 610 let
adamc@593 611 val (e', st) = quoteExp result ((ERel 0, loc), st)
adamc@593 612 in
adamc@593 613 ((ELet ("js", result, e, e'), loc),
adamc@593 614 st)
adamc@593 615 end
adamc@591 616 else
adamc@591 617 let
adamc@591 618 val plen = length pes
adamc@589 619
adamc@591 620 val (cases, st) = ListUtil.foldliMap
adamc@591 621 (fn (i, (p, e), st) =>
adamc@591 622 let
adamc@591 623 val (e, st) = jsE (inner + E.patBindsN p) (e, st)
adamc@591 624 val fail =
adamc@591 625 if i = plen - 1 then
adamc@591 626 str "pf()"
adamc@591 627 else
adamc@591 628 str ("c" ^ Int.toString (i+1) ^ "()")
adamc@591 629 val c = jsPat 0 inner p e fail
adamc@591 630 in
adamc@591 631 (strcat [str ("c" ^ Int.toString i ^ "=function(){return "),
adamc@591 632 c,
adamc@591 633 str "},"],
adamc@591 634 st)
adamc@591 635 end)
adamc@591 636 st pes
adamc@589 637
adamc@591 638 val (e, st) = jsE inner (e', st)
adamc@591 639 in
adamc@591 640 (strcat (str "("
adamc@591 641 :: List.revAppend (cases,
adamc@591 642 [str "d0=",
adamc@591 643 e,
adamc@591 644 str ",c0())"])), st)
adamc@591 645 end
adamc@589 646
adamc@589 647 | EStrcat (e1, e2) =>
adamc@589 648 let
adamc@589 649 val (e1, st) = jsE inner (e1, st)
adamc@589 650 val (e2, st) = jsE inner (e2, st)
adamc@589 651 in
adamc@589 652 (strcat [str "(", e1, str "+", e2, str ")"], st)
adamc@589 653 end
adamc@589 654
adamc@589 655 | EError (e, _) =>
adamc@589 656 let
adamc@589 657 val (e, st) = jsE inner (e, st)
adamc@589 658 in
adamc@589 659 (strcat [str "alert(\"ERROR: \"+", e, str ")"],
adamc@589 660 st)
adamc@589 661 end
adamc@589 662
adamc@589 663 | EWrite e =>
adamc@589 664 let
adamc@589 665 val (e, st) = jsE inner (e, st)
adamc@589 666 in
adamc@589 667 (strcat [str "document.write(",
adamc@589 668 e,
adamc@589 669 str ".v)"], st)
adamc@589 670 end
adamc@589 671
adamc@589 672 | ESeq (e1, e2) =>
adamc@589 673 let
adamc@589 674 val (e1, st) = jsE inner (e1, st)
adamc@589 675 val (e2, st) = jsE inner (e2, st)
adamc@589 676 in
adamc@589 677 (strcat [str "(", e1, str ",", e2, str ")"], st)
adamc@589 678 end
adamc@589 679 | ELet (_, _, e1, e2) =>
adamc@589 680 let
adamc@589 681 val (e1, st) = jsE inner (e1, st)
adamc@589 682 val (e2, st) = jsE (inner + 1) (e2, st)
adamc@589 683 in
adamc@589 684 (strcat [str ("(_" ^ Int.toString (len + inner) ^ "="),
adamc@589 685 e1,
adamc@589 686 str ",",
adamc@589 687 e2,
adamc@572 688 str ")"], st)
adamc@572 689 end
adamc@589 690
adamc@591 691 | EJavaScript (_, _, SOME _) => (e, st)
adamc@590 692
adamc@589 693 | EClosure _ => unsupported "EClosure"
adamc@589 694 | EQuery _ => unsupported "Query"
adamc@589 695 | EDml _ => unsupported "DML"
adamc@589 696 | ENextval _ => unsupported "Nextval"
adamc@589 697 | EUnurlify _ => unsupported "EUnurlify"
adamc@590 698 | EJavaScript (_, e, _) => unsupported "Nested JavaScript"
adamc@590 699
adamc@589 700 | ESignalReturn e =>
adamc@572 701 let
adamc@572 702 val (e, st) = jsE inner (e, st)
adamc@572 703 in
adamc@589 704 (strcat [str "sr(",
adamc@589 705 e,
adamc@589 706 str ")"],
adamc@589 707 st)
adamc@589 708 end
adamc@589 709 | ESignalBind (e1, e2) =>
adamc@589 710 let
adamc@589 711 val (e1, st) = jsE inner (e1, st)
adamc@589 712 val (e2, st) = jsE inner (e2, st)
adamc@589 713 in
adamc@589 714 (strcat [str "sb(",
adamc@589 715 e1,
adamc@589 716 str ",",
adamc@589 717 e2,
adamc@589 718 str ")"],
adamc@589 719 st)
adamc@589 720 end
adamc@589 721 | ESignalSource e =>
adamc@589 722 let
adamc@589 723 val (e, st) = jsE inner (e, st)
adamc@589 724 in
adamc@589 725 (strcat [str "ss(",
adamc@589 726 e,
adamc@589 727 str ")"],
adamc@589 728 st)
adamc@572 729 end
adamc@567 730 end
adamc@589 731 in
adamc@589 732 jsE
adamc@589 733 end
adamc@567 734
adamc@589 735 val decl : state -> decl -> decl * state =
adamc@589 736 U.Decl.foldMapB {typ = fn x => x,
adamc@589 737 exp = fn (env, e, st) =>
adamc@589 738 let
adamc@589 739 fun doCode m skip env orig e =
adamc@589 740 let
adamc@589 741 val len = length env
adamc@589 742 fun str s = (EPrim (Prim.String s), #2 e)
adamc@567 743
adamc@589 744 val locals = List.tabulate
adamc@589 745 (varDepth e,
adamc@589 746 fn i => str ("var _" ^ Int.toString (len + i) ^ ";"))
adamc@589 747 val (e, st) = jsExp m skip env 0 (e, st)
adamc@589 748 in
adamc@589 749 (EJavaScript (m, orig, SOME (strcat (#2 e) (locals @ [e]))), st)
adamc@589 750 end
adamc@589 751 in
adamc@589 752 case e of
adamc@591 753 EJavaScript (m, orig as (EAbs (_, t, _, e), _), NONE) =>
adamc@591 754 doCode m 1 (t :: env) orig e
adamc@591 755 | EJavaScript (m, orig, NONE) =>
adamc@591 756 doCode m 0 env orig orig
adamc@589 757 | _ => (e, st)
adamc@589 758 end,
adamc@589 759 decl = fn (_, e, st) => (e, st),
adamc@589 760 bind = fn (env, U.Decl.RelE (_, t)) => t :: env
adamc@589 761 | (env, _) => env}
adamc@589 762 []
adamc@567 763
adamc@567 764 fun doDecl (d, st) =
adamc@567 765 let
adamc@567 766 val (d, st) = decl st d
adamc@567 767 in
adamc@567 768 (List.revAppend (#decls st, [d]),
adamc@567 769 {decls = [],
adamc@589 770 script = #script st,
adamc@595 771 included = #included st,
adamc@595 772 injectors = #injectors st,
adamc@595 773 maxName = #maxName st})
adamc@567 774 end
adamc@567 775
adamc@567 776 val (ds, st) = ListUtil.foldlMapConcat doDecl
adamc@567 777 {decls = [],
adamc@589 778 script = [],
adamc@595 779 included = IS.empty,
adamc@595 780 injectors = IM.empty,
adamc@595 781 maxName = U.File.maxName file + 1}
adamc@567 782 file
adamc@569 783
adamc@569 784 val inf = TextIO.openIn (OS.Path.joinDirFile {dir = Config.libJs, file = "urweb.js"})
adamc@569 785 fun lines acc =
adamc@569 786 case TextIO.inputLine inf of
adamc@569 787 NONE => String.concat (rev acc)
adamc@569 788 | SOME line => lines (line :: acc)
adamc@569 789 val lines = lines []
adamc@567 790 in
adamc@569 791 TextIO.closeIn inf;
adamc@589 792 (DJavaScript (lines ^ String.concat (rev (#script st))), ErrorMsg.dummySpan) :: ds
adamc@567 793 end
adamc@567 794
adamc@567 795 end