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annotate src/source_print.sml @ 357:368d9411ae67

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author Adam Chlipala <adamc@hcoop.net>
date Sun, 12 Oct 2008 12:53:45 -0400
parents b85e6ba56618
children 8084fa9216de
rev   line source
adamc@1 1 (* Copyright (c) 2008, Adam Chlipala
adamc@1 2 * All rights reserved.
adamc@1 3 *
adamc@1 4 * Redistribution and use in source and binary forms, with or without
adamc@1 5 * modification, are permitted provided that the following conditions are met:
adamc@1 6 *
adamc@1 7 * - Redistributions of source code must retain the above copyright notice,
adamc@1 8 * this list of conditions and the following disclaimer.
adamc@1 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@1 10 * this list of conditions and the following disclaimer in the documentation
adamc@1 11 * and/or other materials provided with the distribution.
adamc@1 12 * - The names of contributors may not be used to endorse or promote products
adamc@1 13 * derived from this software without specific prior written permission.
adamc@1 14 *
adamc@1 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@1 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@1 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@1 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@1 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@1 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@1 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@1 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@1 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@1 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@1 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@1 26 *)
adamc@1 27
adamc@244 28 (* Pretty-printing Ur/Web *)
adamc@1 29
adamc@4 30 structure SourcePrint :> SOURCE_PRINT = struct
adamc@1 31
adamc@1 32 open Print.PD
adamc@1 33 open Print
adamc@1 34
adamc@4 35 open Source
adamc@1 36
adamc@1 37 fun p_kind' par (k, _) =
adamc@1 38 case k of
adamc@1 39 KType => string "Type"
adamc@1 40 | KArrow (k1, k2) => parenIf par (box [p_kind' true k1,
adamc@1 41 space,
adamc@1 42 string "->",
adamc@1 43 space,
adamc@1 44 p_kind k2])
adamc@1 45 | KName => string "Name"
adamc@1 46 | KRecord k => box [string "{", p_kind k, string "}"]
adamc@82 47 | KUnit => string "Unit"
adamc@18 48 | KWild => string "_"
adamc@207 49 | KTuple ks => box [string "(",
adamc@207 50 p_list_sep (box [space, string "*", space]) p_kind ks,
adamc@207 51 string ")"]
adamc@1 52
adamc@1 53 and p_kind k = p_kind' false k
adamc@1 54
adamc@1 55 fun p_explicitness e =
adamc@1 56 case e of
adamc@1 57 Explicit => string "::"
adamc@1 58 | Implicit => string ":::"
adamc@1 59
adamc@1 60 fun p_con' par (c, _) =
adamc@1 61 case c of
adamc@1 62 CAnnot (c, k) => box [string "(",
adamc@1 63 p_con c,
adamc@1 64 space,
adamc@1 65 string "::",
adamc@1 66 space,
adamc@1 67 p_kind k,
adamc@1 68 string ")"]
adamc@1 69
adamc@1 70 | TFun (t1, t2) => parenIf par (box [p_con' true t1,
adamc@1 71 space,
adamc@1 72 string "->",
adamc@1 73 space,
adamc@1 74 p_con t2])
adamc@1 75 | TCFun (e, x, k, c) => parenIf par (box [string x,
adamc@1 76 space,
adamc@1 77 p_explicitness e,
adamc@1 78 space,
adamc@1 79 p_kind k,
adamc@1 80 space,
adamc@1 81 string "->",
adamc@1 82 space,
adamc@1 83 p_con c])
adamc@1 84 | TRecord (CRecord xcs, _) => box [string "{",
adamc@1 85 p_list (fn (x, c) =>
adamc@20 86 box [p_name x,
adamc@1 87 space,
adamc@1 88 string ":",
adamc@1 89 space,
adamc@1 90 p_con c]) xcs,
adamc@1 91 string "}"]
adamc@1 92 | TRecord c => box [string "$",
adamc@1 93 p_con' true c]
adamc@1 94
adamc@34 95 | CVar (ss, s) => p_list_sep (string ".") string (ss @ [s])
adamc@1 96 | CApp (c1, c2) => parenIf par (box [p_con c1,
adamc@1 97 space,
adamc@1 98 p_con' true c2])
adamc@67 99 | CAbs (x, NONE, c) => parenIf par (box [string "fn",
adamc@67 100 space,
adamc@67 101 string x,
adamc@67 102 space,
adamc@67 103 string "=>",
adamc@67 104 space,
adamc@67 105 p_con c])
adamc@67 106 | CAbs (x, SOME k, c) => parenIf par (box [string "fn",
adamc@67 107 space,
adamc@67 108 string x,
adamc@67 109 space,
adamc@67 110 string "::",
adamc@67 111 space,
adamc@67 112 p_kind k,
adamc@67 113 space,
adamc@67 114 string "=>",
adamc@67 115 space,
adamc@67 116 p_con c])
adamc@84 117 | CDisjoint (c1, c2, c3) => parenIf par (box [p_con c1,
adamc@84 118 space,
adamc@84 119 string "~",
adamc@84 120 space,
adamc@84 121 p_con c2,
adamc@84 122 space,
adamc@84 123 string "=>",
adamc@84 124 space,
adamc@84 125 p_con c3])
adamc@1 126
adamc@1 127 | CName s => box [string "#", string s]
adamc@1 128
adamc@1 129 | CRecord xcs => box [string "[",
adamc@1 130 p_list (fn (x, c) =>
adamc@1 131 box [p_con x,
adamc@1 132 space,
adamc@1 133 string "=",
adamc@1 134 space,
adamc@1 135 p_con c]) xcs,
adamc@1 136 string "]"]
adamc@1 137 | CConcat (c1, c2) => parenIf par (box [p_con' true c1,
adamc@1 138 space,
adamc@1 139 string "++",
adamc@1 140 space,
adamc@1 141 p_con c2])
adamc@67 142 | CFold => string "fold"
adamc@82 143
adamc@82 144 | CUnit => string "()"
adamc@82 145
adamc@18 146 | CWild k => box [string "(_",
adamc@18 147 space,
adamc@18 148 string "::",
adamc@18 149 space,
adamc@223 150 p_kind k,
adamc@223 151 string ")"]
adamc@207 152
adamc@207 153 | CTuple cs => box [string "(",
adamc@207 154 p_list p_con cs,
adamc@207 155 string ")"]
adamc@207 156 | CProj (c, n) => box [p_con c,
adamc@207 157 string ".",
adamc@207 158 string (Int.toString n)]
adamc@1 159
adamc@1 160 and p_con c = p_con' false c
adamc@1 161
adamc@20 162 and p_name (all as (c, _)) =
adamc@20 163 case c of
adamc@20 164 CName s => string s
adamc@20 165 | _ => p_con all
adamc@20 166
adamc@170 167 fun p_pat' par (p, _) =
adamc@170 168 case p of
adamc@170 169 PWild => string "_"
adamc@170 170 | PVar s => string s
adamc@173 171 | PPrim p => Prim.p_t p
adamc@170 172 | PCon (ms, x, NONE) => p_list_sep (string ".") string (ms @ [x])
adamc@170 173 | PCon (ms, x, SOME p) => parenIf par (box [p_list_sep (string ".") string (ms @ [x]),
adamc@170 174 space,
adamc@170 175 p_pat' true p])
adamc@174 176 | PRecord (xps, flex) =>
adamc@174 177 let
adamc@175 178 val pps = map (fn (x, p) => box [string x, space, string "=", space, p_pat p]) xps
adamc@174 179 in
adamc@174 180 box [string "{",
adamc@174 181 p_list_sep (box [string ",", space]) (fn x => x)
adamc@174 182 (if flex then
adamc@175 183 pps @ [string "..."]
adamc@174 184 else
adamc@175 185 pps),
adamc@174 186 string "}"]
adamc@174 187 end
adamc@170 188
adamc@174 189 and p_pat x = p_pat' false x
adamc@170 190
adamc@8 191 fun p_exp' par (e, _) =
adamc@8 192 case e of
adamc@8 193 EAnnot (e, t) => box [string "(",
adamc@8 194 p_exp e,
adamc@8 195 space,
adamc@8 196 string ":",
adamc@8 197 space,
adamc@8 198 p_con t,
adamc@8 199 string ")"]
adamc@8 200
adamc@14 201 | EPrim p => Prim.p_t p
adamc@34 202 | EVar (ss, s) => p_list_sep (string ".") string (ss @ [s])
adamc@8 203 | EApp (e1, e2) => parenIf par (box [p_exp e1,
adamc@8 204 space,
adamc@8 205 p_exp' true e2])
adamc@8 206 | EAbs (x, NONE, e) => parenIf par (box [string "fn",
adamc@8 207 space,
adamc@8 208 string x,
adamc@8 209 space,
adamc@8 210 string "=>",
adamc@8 211 space,
adamc@8 212 p_exp e])
adamc@8 213 | EAbs (x, SOME t, e) => parenIf par (box [string "fn",
adamc@8 214 space,
adamc@8 215 string x,
adamc@8 216 space,
adamc@8 217 string ":",
adamc@8 218 space,
adamc@8 219 p_con t,
adamc@8 220 space,
adamc@8 221 string "=>",
adamc@8 222 space,
adamc@8 223 p_exp e])
adamc@8 224 | ECApp (e, c) => parenIf par (box [p_exp e,
adamc@8 225 space,
adamc@8 226 string "[",
adamc@8 227 p_con c,
adamc@8 228 string "]"])
adamc@8 229 | ECAbs (exp, x, k, e) => parenIf par (box [string "fn",
adamc@8 230 space,
adamc@8 231 string x,
adamc@8 232 space,
adamc@8 233 p_explicitness exp,
adamc@8 234 space,
adamc@8 235 p_kind k,
adamc@8 236 space,
adamc@8 237 string "=>",
adamc@8 238 space,
adamc@8 239 p_exp e])
adamc@85 240 | EDisjoint (c1, c2, e) => parenIf par (box [p_con c1,
adamc@85 241 space,
adamc@85 242 string "~",
adamc@85 243 space,
adamc@85 244 p_con c2,
adamc@85 245 space,
adamc@85 246 string "=>",
adamc@85 247 space,
adamc@85 248 p_exp e])
adamc@8 249
adamc@12 250 | ERecord xes => box [string "{",
adamc@12 251 p_list (fn (x, e) =>
adamc@21 252 box [p_name x,
adamc@12 253 space,
adamc@12 254 string "=",
adamc@12 255 space,
adamc@12 256 p_exp e]) xes,
adamc@12 257 string "}"]
adamc@12 258 | EField (e, c) => box [p_exp' true e,
adamc@12 259 string ".",
adamc@12 260 p_con' true c]
adamc@339 261 | EWith (e1, c, e2) => parenIf par (box [p_exp e1,
adamc@339 262 space,
adamc@339 263 string "with",
adamc@339 264 space,
adamc@339 265 p_con' true c,
adamc@339 266 space,
adamc@339 267 p_exp' true e2])
adamc@149 268 | ECut (e, c) => parenIf par (box [p_exp' true e,
adamc@149 269 space,
adamc@149 270 string "--",
adamc@149 271 space,
adamc@149 272 p_con' true c])
adamc@71 273 | EFold => string "fold"
adamc@12 274
adamc@170 275 | ECase (e, pes) => parenIf par (box [string "case",
adamc@170 276 space,
adamc@171 277 p_exp e,
adamc@170 278 space,
adamc@170 279 string "of",
adamc@170 280 space,
adamc@170 281 p_list_sep (box [space, string "|", space])
adamc@170 282 (fn (p, e) => box [p_pat p,
adamc@170 283 space,
adamc@170 284 string "=>",
adamc@170 285 space,
adamc@170 286 p_exp e]) pes])
adamc@170 287
adamc@219 288 | EWild => string "_"
adamc@210 289
adamc@8 290 and p_exp e = p_exp' false e
adamc@8 291
adamc@191 292 fun p_datatype (x, xs, cons) =
adamc@156 293 box [string "datatype",
adamc@156 294 space,
adamc@156 295 string x,
adamc@191 296 p_list_sep (box []) (fn x => box [space, string x]) xs,
adamc@156 297 space,
adamc@156 298 string "=",
adamc@156 299 space,
adamc@156 300 p_list_sep (box [space, string "|", space])
adamc@156 301 (fn (x, NONE) => string x
adamc@156 302 | (x, SOME t) => box [string x, space, string "of", space, p_con t])
adamc@156 303 cons]
adamc@156 304
adamc@30 305 fun p_sgn_item (sgi, _) =
adamc@30 306 case sgi of
adamc@30 307 SgiConAbs (x, k) => box [string "con",
adamc@30 308 space,
adamc@30 309 string x,
adamc@30 310 space,
adamc@30 311 string "::",
adamc@30 312 space,
adamc@30 313 p_kind k]
adamc@30 314 | SgiCon (x, NONE, c) => box [string "con",
adamc@30 315 space,
adamc@30 316 string x,
adamc@30 317 space,
adamc@30 318 string "=",
adamc@30 319 space,
adamc@30 320 p_con c]
adamc@30 321 | SgiCon (x, SOME k, c) => box [string "con",
adamc@30 322 space,
adamc@30 323 string x,
adamc@30 324 space,
adamc@30 325 string "::",
adamc@30 326 space,
adamc@30 327 p_kind k,
adamc@30 328 space,
adamc@30 329 string "=",
adamc@30 330 space,
adamc@30 331 p_con c]
adamc@156 332 | SgiDatatype x => p_datatype x
adamc@156 333 | SgiDatatypeImp (x, ms, x') =>
adamc@156 334 box [string "datatype",
adamc@156 335 space,
adamc@156 336 string x,
adamc@156 337 space,
adamc@156 338 string "=",
adamc@156 339 space,
adamc@156 340 string "datatype",
adamc@156 341 space,
adamc@156 342 p_list_sep (string ".") string (ms @ [x'])]
adamc@30 343 | SgiVal (x, c) => box [string "val",
adamc@30 344 space,
adamc@30 345 string x,
adamc@30 346 space,
adamc@30 347 string ":",
adamc@30 348 space,
adamc@30 349 p_con c]
adamc@30 350 | SgiStr (x, sgn) => box [string "structure",
adamc@30 351 space,
adamc@30 352 string x,
adamc@30 353 space,
adamc@30 354 string ":",
adamc@30 355 space,
adamc@30 356 p_sgn sgn]
adamc@59 357 | SgiSgn (x, sgn) => box [string "signature",
adamc@59 358 space,
adamc@59 359 string x,
adamc@59 360 space,
adamc@59 361 string "=",
adamc@59 362 space,
adamc@59 363 p_sgn sgn]
adamc@58 364 | SgiInclude sgn => box [string "include",
adamc@58 365 space,
adamc@58 366 p_sgn sgn]
adamc@88 367 | SgiConstraint (c1, c2) => box [string "constraint",
adamc@88 368 space,
adamc@88 369 p_con c1,
adamc@88 370 space,
adamc@88 371 string "~",
adamc@88 372 space,
adamc@88 373 p_con c2]
adamc@203 374 | SgiTable (x, c) => box [string "table",
adamc@203 375 space,
adamc@203 376 string x,
adamc@203 377 space,
adamc@203 378 string ":",
adamc@203 379 space,
adamc@203 380 p_con c]
adamc@338 381 | SgiSequence x => box [string "sequence",
adamc@338 382 space,
adamc@338 383 string x]
adamc@211 384 | SgiClassAbs x => box [string "class",
adamc@211 385 space,
adamc@211 386 string x]
adamc@211 387 | SgiClass (x, c) => box [string "class",
adamc@211 388 space,
adamc@211 389 string x,
adamc@211 390 space,
adamc@211 391 string "=",
adamc@211 392 space,
adamc@211 393 p_con c]
adamc@30 394
adamc@30 395 and p_sgn (sgn, _) =
adamc@30 396 case sgn of
adamc@30 397 SgnConst sgis => box [string "sig",
adamc@30 398 newline,
adamc@30 399 p_list_sep newline p_sgn_item sgis,
adamc@30 400 newline,
adamc@30 401 string "end"]
adamc@30 402 | SgnVar x => string x
adamc@40 403 | SgnFun (x, sgn, sgn') => box [string "functor",
adamc@40 404 space,
adamc@40 405 string "(",
adamc@40 406 string x,
adamc@40 407 space,
adamc@40 408 string ":",
adamc@40 409 p_sgn sgn,
adamc@40 410 string ")",
adamc@40 411 space,
adamc@40 412 string ":",
adamc@40 413 space,
adamc@40 414 p_sgn sgn']
adamc@42 415 | SgnWhere (sgn, x, c) => box [p_sgn sgn,
adamc@42 416 space,
adamc@42 417 string "where",
adamc@42 418 space,
adamc@42 419 string "con",
adamc@42 420 space,
adamc@42 421 string x,
adamc@42 422 space,
adamc@42 423 string "=",
adamc@42 424 space,
adamc@42 425 p_con c]
adamc@59 426 | SgnProj (m, ms, x) => p_list_sep (string ".") string (m :: ms @ [x])
adamc@59 427
adamc@42 428
adamc@123 429 fun p_vali (x, co, e) =
adamc@123 430 case co of
adamc@123 431 NONE => box [string x,
adamc@123 432 space,
adamc@123 433 string "=",
adamc@123 434 space,
adamc@123 435 p_exp e]
adamc@123 436 | SOME t => box [string x,
adamc@123 437 space,
adamc@123 438 string ":",
adamc@123 439 space,
adamc@123 440 p_con t,
adamc@123 441 space,
adamc@123 442 string "=",
adamc@123 443 space,
adamc@123 444 p_exp e]
adamc@123 445
adamc@1 446 fun p_decl ((d, _) : decl) =
adamc@1 447 case d of
adamc@1 448 DCon (x, NONE, c) => box [string "con",
adamc@1 449 space,
adamc@1 450 string x,
adamc@1 451 space,
adamc@1 452 string "=",
adamc@1 453 space,
adamc@1 454 p_con c]
adamc@1 455 | DCon (x, SOME k, c) => box [string "con",
adamc@1 456 space,
adamc@1 457 string x,
adamc@1 458 space,
adamc@1 459 string "::",
adamc@1 460 space,
adamc@1 461 p_kind k,
adamc@1 462 space,
adamc@1 463 string "=",
adamc@1 464 space,
adamc@1 465 p_con c]
adamc@156 466 | DDatatype x => p_datatype x
adamc@156 467 | DDatatypeImp (x, ms, x') =>
adamc@156 468 box [string "datatype",
adamc@156 469 space,
adamc@156 470 string x,
adamc@156 471 space,
adamc@156 472 string "=",
adamc@156 473 space,
adamc@156 474 string "datatype",
adamc@156 475 space,
adamc@156 476 p_list_sep (string ".") string (ms @ [x'])]
adamc@123 477 | DVal vi => box [string "val",
adamc@123 478 space,
adamc@123 479 p_vali vi]
adamc@123 480 | DValRec vis => box [string "val",
adamc@123 481 space,
adamc@123 482 string "rec",
adamc@123 483 space,
adamc@123 484 p_list_sep (box [newline, string "and", space]) p_vali vis]
adamc@1 485
adamc@30 486 | DSgn (x, sgn) => box [string "signature",
adamc@30 487 space,
adamc@30 488 string x,
adamc@30 489 space,
adamc@30 490 string "=",
adamc@30 491 space,
adamc@30 492 p_sgn sgn]
adamc@30 493 | DStr (x, NONE, str) => box [string "structure",
adamc@30 494 space,
adamc@30 495 string x,
adamc@30 496 space,
adamc@30 497 string "=",
adamc@30 498 space,
adamc@30 499 p_str str]
adamc@30 500 | DStr (x, SOME sgn, str) => box [string "structure",
adamc@30 501 space,
adamc@30 502 string x,
adamc@30 503 space,
adamc@30 504 string ":",
adamc@30 505 space,
adamc@30 506 p_sgn sgn,
adamc@30 507 space,
adamc@30 508 string "=",
adamc@30 509 space,
adamc@30 510 p_str str]
adamc@48 511 | DFfiStr (x, sgn) => box [string "extern",
adamc@48 512 space,
adamc@48 513 string "structure",
adamc@48 514 space,
adamc@48 515 string x,
adamc@48 516 space,
adamc@48 517 string ":",
adamc@48 518 space,
adamc@48 519 p_sgn sgn]
adamc@61 520 | DOpen (m, ms) => box [string "open",
adamc@61 521 space,
adamc@61 522 p_list_sep (string ".") string (m :: ms)]
adamc@88 523 | DConstraint (c1, c2) => box [string "constraint",
adamc@88 524 space,
adamc@88 525 p_con c1,
adamc@88 526 space,
adamc@88 527 string "~",
adamc@88 528 space,
adamc@88 529 p_con c2]
adamc@88 530 | DOpenConstraints (m, ms) => box [string "open",
adamc@88 531 space,
adamc@88 532 string "constraints",
adamc@88 533 space,
adamc@88 534 p_list_sep (string ".") string (m :: ms)]
adamc@30 535
adamc@109 536 | DExport str => box [string "export",
adamc@109 537 space,
adamc@109 538 p_str str]
adamc@203 539 | DTable (x, c) => box [string "table",
adamc@203 540 space,
adamc@203 541 string x,
adamc@203 542 space,
adamc@203 543 string ":",
adamc@203 544 space,
adamc@203 545 p_con c]
adamc@338 546 | DSequence x => box [string "sequence",
adamc@338 547 space,
adamc@338 548 string x]
adamc@211 549 | DClass (x, c) => box [string "class",
adamc@211 550 space,
adamc@211 551 string x,
adamc@211 552 space,
adamc@211 553 string "=",
adamc@211 554 space,
adamc@211 555 p_con c]
adamc@100 556
adamc@271 557 | DDatabase s => box [string "database",
adamc@271 558 space,
adamc@271 559 string s]
adamc@271 560
adamc@30 561 and p_str (str, _) =
adamc@30 562 case str of
adamc@30 563 StrConst ds => box [string "struct",
adamc@30 564 newline,
adamc@30 565 p_list_sep newline p_decl ds,
adamc@30 566 newline,
adamc@30 567 string "end"]
adamc@30 568 | StrVar x => string x
adamc@34 569 | StrProj (str, x) => box [p_str str,
adamc@34 570 string ".",
adamc@34 571 string x]
adamc@40 572 | StrFun (x, sgn, NONE, str) => box [string "functor",
adamc@40 573 space,
adamc@40 574 string "(",
adamc@40 575 string x,
adamc@40 576 space,
adamc@40 577 string ":",
adamc@40 578 p_sgn sgn,
adamc@40 579 string ")",
adamc@40 580 space,
adamc@40 581 string "=>",
adamc@40 582 space,
adamc@40 583 p_str str]
adamc@40 584 | StrFun (x, sgn, SOME sgn', str) => box [string "functor",
adamc@40 585 space,
adamc@40 586 string "(",
adamc@40 587 string x,
adamc@40 588 space,
adamc@40 589 string ":",
adamc@40 590 p_sgn sgn,
adamc@40 591 string ")",
adamc@40 592 space,
adamc@40 593 string ":",
adamc@40 594 space,
adamc@40 595 p_sgn sgn',
adamc@40 596 space,
adamc@40 597 string "=>",
adamc@40 598 space,
adamc@40 599 p_str str]
adamc@44 600 | StrApp (str1, str2) => box [p_str str1,
adamc@44 601 string "(",
adamc@44 602 p_str str2,
adamc@44 603 string ")"]
adamc@30 604
adamc@1 605 val p_file = p_list_sep newline p_decl
adamc@1 606
adamc@1 607 end