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annotate src/core_util.sml @ 683:9a2c18dab11d

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Expunging non-nullable rows
author Adam Chlipala <adamc@hcoop.net>
date Sun, 29 Mar 2009 13:30:01 -0400
parents 230654093b51
children 70cbdcf5989b
rev   line source
adamc@16 1 (* Copyright (c) 2008, Adam Chlipala
adamc@16 2 * All rights reserved.
adamc@16 3 *
adamc@16 4 * Redistribution and use in source and binary forms, with or without
adamc@16 5 * modification, are permitted provided that the following conditions are met:
adamc@16 6 *
adamc@16 7 * - Redistributions of source code must retain the above copyright notice,
adamc@16 8 * this list of conditions and the following disclaimer.
adamc@16 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@16 10 * this list of conditions and the following disclaimer in the documentation
adamc@16 11 * and/or other materials provided with the distribution.
adamc@16 12 * - The names of contributors may not be used to endorse or promote products
adamc@16 13 * derived from this software without specific prior written permission.
adamc@16 14 *
adamc@16 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@16 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@16 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@16 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@16 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@16 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@16 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@16 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@16 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@16 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@16 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@16 26 *)
adamc@16 27
adamc@16 28 structure CoreUtil :> CORE_UTIL = struct
adamc@16 29
adamc@16 30 open Core
adamc@16 31
adamc@16 32 structure S = Search
adamc@16 33
adamc@16 34 structure Kind = struct
adamc@16 35
adamc@193 36 open Order
adamc@193 37
adamc@193 38 fun compare ((k1, _), (k2, _)) =
adamc@193 39 case (k1, k2) of
adamc@193 40 (KType, KType) => EQUAL
adamc@193 41 | (KType, _) => LESS
adamc@193 42 | (_, KType) => GREATER
adamc@193 43
adamc@193 44 | (KArrow (d1, r1), KArrow (d2, r2)) => join (compare (d1, d2), fn () => compare (r1, r2))
adamc@193 45 | (KArrow _, _) => LESS
adamc@193 46 | (_, KArrow _) => GREATER
adamc@193 47
adamc@193 48 | (KName, KName) => EQUAL
adamc@193 49 | (KName, _) => LESS
adamc@193 50 | (_, KName) => GREATER
adamc@193 51
adamc@193 52 | (KRecord k1, KRecord k2) => compare (k1, k2)
adamc@193 53 | (KRecord _, _) => LESS
adamc@193 54 | (_, KRecord _) => GREATER
adamc@193 55
adamc@193 56 | (KUnit, KUnit) => EQUAL
adamc@214 57 | (KUnit, _) => LESS
adamc@214 58 | (_, KUnit) => GREATER
adamc@214 59
adamc@214 60 | (KTuple ks1, KTuple ks2) => joinL compare (ks1, ks2)
adamc@626 61 | (KTuple _, _) => LESS
adamc@626 62 | (_, KTuple _) => GREATER
adamc@193 63
adamc@626 64 | (KRel n1, KRel n2) => Int.compare (n1, n2)
adamc@626 65 | (KRel _, _) => LESS
adamc@626 66 | (_, KRel _) => GREATER
adamc@626 67
adamc@626 68 | (KFun (_, k1), KFun (_, k2)) => compare (k1, k2)
adamc@626 69
adamc@626 70 fun mapfoldB {kind = f, bind} =
adamc@16 71 let
adamc@626 72 fun mfk ctx k acc =
adamc@626 73 S.bindP (mfk' ctx k acc, f ctx)
adamc@16 74
adamc@626 75 and mfk' ctx (kAll as (k, loc)) =
adamc@16 76 case k of
adamc@16 77 KType => S.return2 kAll
adamc@16 78
adamc@16 79 | KArrow (k1, k2) =>
adamc@626 80 S.bind2 (mfk ctx k1,
adamc@16 81 fn k1' =>
adamc@626 82 S.map2 (mfk ctx k2,
adamc@16 83 fn k2' =>
adamc@16 84 (KArrow (k1', k2'), loc)))
adamc@16 85
adamc@16 86 | KName => S.return2 kAll
adamc@16 87
adamc@16 88 | KRecord k =>
adamc@626 89 S.map2 (mfk ctx k,
adamc@16 90 fn k' =>
adamc@16 91 (KRecord k', loc))
adamc@87 92
adamc@87 93 | KUnit => S.return2 kAll
adamc@214 94
adamc@214 95 | KTuple ks =>
adamc@626 96 S.map2 (ListUtil.mapfold (mfk ctx) ks,
adamc@214 97 fn ks' =>
adamc@214 98 (KTuple ks', loc))
adamc@626 99
adamc@626 100 | KRel _ => S.return2 kAll
adamc@626 101 | KFun (x, k) =>
adamc@626 102 S.map2 (mfk (bind (ctx, x)) k,
adamc@626 103 fn k' =>
adamc@626 104 (KFun (x, k'), loc))
adamc@16 105 in
adamc@16 106 mfk
adamc@16 107 end
adamc@16 108
adamc@626 109 fun mapfold fk =
adamc@626 110 mapfoldB {kind = fn () => fk,
adamc@626 111 bind = fn ((), _) => ()} ()
adamc@626 112
adamc@16 113 fun map f k =
adamc@16 114 case mapfold (fn k => fn () => S.Continue (f k, ())) k () of
adamc@626 115 S.Return () => raise Fail "CoreUtil.Kind.map"
adamc@16 116 | S.Continue (k, ()) => k
adamc@16 117
adamc@626 118 fun mapB {kind, bind} ctx k =
adamc@626 119 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adamc@626 120 bind = bind} ctx k () of
adamc@626 121 S.Continue (k, ()) => k
adamc@626 122 | S.Return _ => raise Fail "CoreUtil.Kind.mapB: Impossible"
adamc@626 123
adamc@16 124 fun exists f k =
adamc@16 125 case mapfold (fn k => fn () =>
adamc@16 126 if f k then
adamc@16 127 S.Return ()
adamc@16 128 else
adamc@16 129 S.Continue (k, ())) k () of
adamc@16 130 S.Return _ => true
adamc@16 131 | S.Continue _ => false
adamc@16 132
adamc@16 133 end
adamc@16 134
adamc@16 135 structure Con = struct
adamc@16 136
adamc@193 137 open Order
adamc@193 138
adamc@193 139 fun compare ((c1, _), (c2, _)) =
adamc@193 140 case (c1, c2) of
adamc@193 141 (TFun (d1, r1), TFun (d2, r2)) => join (compare (d1, d2), fn () => compare (r1, r2))
adamc@193 142 | (TFun _, _) => LESS
adamc@193 143 | (_, TFun _) => GREATER
adamc@193 144
adamc@193 145 | (TCFun (x1, k1, r1), TCFun (x2, k2, r2)) =>
adamc@193 146 join (String.compare (x1, x2),
adamc@193 147 fn () => join (Kind.compare (k1, k2),
adamc@193 148 fn () => compare (r1, r2)))
adamc@193 149 | (TCFun _, _) => LESS
adamc@193 150 | (_, TCFun _) => GREATER
adamc@193 151
adamc@193 152 | (TRecord c1, TRecord c2) => compare (c1, c2)
adamc@193 153 | (TRecord _, _) => LESS
adamc@193 154 | (_, TRecord _) => GREATER
adamc@193 155
adamc@193 156 | (CRel n1, CRel n2) => Int.compare (n1, n2)
adamc@193 157 | (CRel _, _) => LESS
adamc@193 158 | (_, CRel _) => GREATER
adamc@193 159
adamc@193 160 | (CNamed n1, CNamed n2) => Int.compare (n1, n2)
adamc@193 161 | (CNamed _, _) => LESS
adamc@193 162 | (_, CNamed _) => GREATER
adamc@193 163
adamc@193 164 | (CFfi (m1, s1), CFfi (m2, s2)) => join (String.compare (m1, m2),
adamc@193 165 fn () => String.compare (s1, s2))
adamc@193 166 | (CFfi _, _) => LESS
adamc@193 167 | (_, CFfi _) => GREATER
adamc@193 168
adamc@193 169 | (CApp (f1, x1), CApp (f2, x2)) => join (compare (f1, f2),
adamc@193 170 fn () => compare (x1, x2))
adamc@193 171 | (CApp _, _) => LESS
adamc@193 172 | (_, CApp _) => GREATER
adamc@193 173
adamc@193 174 | (CAbs (x1, k1, b1), CAbs (x2, k2, b2)) =>
adamc@193 175 join (String.compare (x1, x2),
adamc@193 176 fn () => join (Kind.compare (k1, k2),
adamc@193 177 fn () => compare (b1, b2)))
adamc@193 178 | (CAbs _, _) => LESS
adamc@193 179 | (_, CAbs _) => GREATER
adamc@193 180
adamc@193 181 | (CName s1, CName s2) => String.compare (s1, s2)
adamc@193 182 | (CName _, _) => LESS
adamc@193 183 | (_, CName _) => GREATER
adamc@193 184
adamc@193 185 | (CRecord (k1, xvs1), CRecord (k2, xvs2)) =>
adamc@193 186 join (Kind.compare (k1, k2),
adamc@250 187 fn () =>
adamc@250 188 let
adamc@250 189 val sort = ListMergeSort.sort (fn ((x1, _), (x2, _)) =>
adamc@250 190 compare (x1, x2) = GREATER)
adamc@250 191 in
adamc@250 192 joinL (fn ((x1, v1), (x2, v2)) =>
adamc@250 193 join (compare (x1, x2),
adamc@250 194 fn () => compare (v1, v2))) (sort xvs1, sort xvs2)
adamc@250 195 end)
adamc@193 196 | (CRecord _, _) => LESS
adamc@193 197 | (_, CRecord _) => GREATER
adamc@193 198
adamc@193 199 | (CConcat (f1, s1), CConcat (f2, s2)) =>
adamc@193 200 join (compare (f1, f2),
adamc@193 201 fn () => compare (s1, s2))
adamc@193 202 | (CConcat _, _) => LESS
adamc@193 203 | (_, CConcat _) => GREATER
adamc@193 204
adamc@621 205 | (CMap (d1, r1), CMap (d2, r2)) =>
adamc@193 206 join (Kind.compare (d1, r2),
adamc@193 207 fn () => Kind.compare (r1, r2))
adamc@621 208 | (CMap _, _) => LESS
adamc@621 209 | (_, CMap _) => GREATER
adamc@193 210
adamc@193 211 | (CUnit, CUnit) => EQUAL
adamc@214 212 | (CUnit, _) => LESS
adamc@214 213 | (_, CUnit) => GREATER
adamc@214 214
adamc@214 215 | (CTuple cs1, CTuple cs2) => joinL compare (cs1, cs2)
adamc@214 216 | (CTuple _, _) => LESS
adamc@214 217 | (_, CTuple _) => GREATER
adamc@214 218
adamc@214 219 | (CProj (c1, n1), CProj (c2, n2)) => join (Int.compare (n1, n2),
adamc@214 220 fn () => compare (c1, c2))
adamc@626 221 | (CProj _, _) => LESS
adamc@626 222 | (_, CProj _) => GREATER
adamc@626 223
adamc@626 224 | (CKAbs (_, c1), CKAbs (_, c2)) => compare (c1, c2)
adamc@626 225 | (CKAbs _, _) => LESS
adamc@626 226 | (_, CKAbs _) => GREATER
adamc@626 227
adamc@626 228 | (CKApp (c1, k1), CKApp (c2, k2)) =>
adamc@626 229 join (compare (c1, c2),
adamc@626 230 fn () => Kind.compare (k1, k2))
adamc@626 231 | (CKApp _, _) => LESS
adamc@626 232 | (_, CKApp _) => GREATER
adamc@626 233
adamc@626 234 | (TKFun (_, c1), TKFun (_, c2)) => compare (c1, c2)
adamc@193 235
adamc@16 236 datatype binder =
adamc@626 237 RelK of string
adamc@626 238 | RelC of string * kind
adamc@626 239 | NamedC of string * int * kind * con option
adamc@16 240
adamc@16 241 fun mapfoldB {kind = fk, con = fc, bind} =
adamc@16 242 let
adamc@626 243 val mfk = Kind.mapfoldB {kind = fk, bind = fn (ctx, x) => bind (ctx, RelK x)}
adamc@16 244
adamc@16 245 fun mfc ctx c acc =
adamc@16 246 S.bindP (mfc' ctx c acc, fc ctx)
adamc@16 247
adamc@16 248 and mfc' ctx (cAll as (c, loc)) =
adamc@16 249 case c of
adamc@16 250 TFun (c1, c2) =>
adamc@16 251 S.bind2 (mfc ctx c1,
adamc@16 252 fn c1' =>
adamc@16 253 S.map2 (mfc ctx c2,
adamc@16 254 fn c2' =>
adamc@16 255 (TFun (c1', c2'), loc)))
adamc@16 256 | TCFun (x, k, c) =>
adamc@626 257 S.bind2 (mfk ctx k,
adamc@16 258 fn k' =>
adamc@626 259 S.map2 (mfc (bind (ctx, RelC (x, k))) c,
adamc@16 260 fn c' =>
adamc@16 261 (TCFun (x, k', c'), loc)))
adamc@16 262 | TRecord c =>
adamc@16 263 S.map2 (mfc ctx c,
adamc@16 264 fn c' =>
adamc@16 265 (TRecord c', loc))
adamc@16 266
adamc@16 267 | CRel _ => S.return2 cAll
adamc@16 268 | CNamed _ => S.return2 cAll
adamc@48 269 | CFfi _ => S.return2 cAll
adamc@16 270 | CApp (c1, c2) =>
adamc@16 271 S.bind2 (mfc ctx c1,
adamc@16 272 fn c1' =>
adamc@16 273 S.map2 (mfc ctx c2,
adamc@16 274 fn c2' =>
adamc@16 275 (CApp (c1', c2'), loc)))
adamc@16 276 | CAbs (x, k, c) =>
adamc@626 277 S.bind2 (mfk ctx k,
adamc@16 278 fn k' =>
adamc@626 279 S.map2 (mfc (bind (ctx, RelC (x, k))) c,
adamc@16 280 fn c' =>
adamc@16 281 (CAbs (x, k', c'), loc)))
adamc@16 282
adamc@16 283 | CName _ => S.return2 cAll
adamc@16 284
adamc@16 285 | CRecord (k, xcs) =>
adamc@626 286 S.bind2 (mfk ctx k,
adamc@16 287 fn k' =>
adamc@16 288 S.map2 (ListUtil.mapfold (fn (x, c) =>
adamc@16 289 S.bind2 (mfc ctx x,
adamc@16 290 fn x' =>
adamc@16 291 S.map2 (mfc ctx c,
adamc@16 292 fn c' =>
adamc@16 293 (x', c'))))
adamc@16 294 xcs,
adamc@16 295 fn xcs' =>
adamc@16 296 (CRecord (k', xcs'), loc)))
adamc@16 297 | CConcat (c1, c2) =>
adamc@16 298 S.bind2 (mfc ctx c1,
adamc@16 299 fn c1' =>
adamc@16 300 S.map2 (mfc ctx c2,
adamc@16 301 fn c2' =>
adamc@16 302 (CConcat (c1', c2'), loc)))
adamc@621 303 | CMap (k1, k2) =>
adamc@626 304 S.bind2 (mfk ctx k1,
adamc@69 305 fn k1' =>
adamc@626 306 S.map2 (mfk ctx k2,
adamc@69 307 fn k2' =>
adamc@621 308 (CMap (k1', k2'), loc)))
adamc@87 309
adamc@87 310 | CUnit => S.return2 cAll
adamc@214 311
adamc@214 312 | CTuple cs =>
adamc@214 313 S.map2 (ListUtil.mapfold (mfc ctx) cs,
adamc@214 314 fn cs' =>
adamc@214 315 (CTuple cs', loc))
adamc@214 316
adamc@214 317 | CProj (c, n) =>
adamc@214 318 S.map2 (mfc ctx c,
adamc@214 319 fn c' =>
adamc@214 320 (CProj (c', n), loc))
adamc@626 321
adamc@626 322 | CKAbs (x, c) =>
adamc@626 323 S.map2 (mfc (bind (ctx, RelK x)) c,
adamc@626 324 fn c' =>
adamc@626 325 (CKAbs (x, c'), loc))
adamc@626 326 | CKApp (c, k) =>
adamc@626 327 S.bind2 (mfc ctx c,
adamc@626 328 fn c' =>
adamc@626 329 S.map2 (mfk ctx k,
adamc@626 330 fn k' =>
adamc@626 331 (CKApp (c', k'), loc)))
adamc@626 332 | TKFun (x, c) =>
adamc@626 333 S.map2 (mfc (bind (ctx, RelK x)) c,
adamc@626 334 fn c' =>
adamc@626 335 (TKFun (x, c'), loc))
adamc@16 336 in
adamc@16 337 mfc
adamc@16 338 end
adamc@16 339
adamc@16 340 fun mapfold {kind = fk, con = fc} =
adamc@626 341 mapfoldB {kind = fn () => fk,
adamc@16 342 con = fn () => fc,
adamc@16 343 bind = fn ((), _) => ()} ()
adamc@16 344
adamc@16 345 fun map {kind, con} c =
adamc@16 346 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@16 347 con = fn c => fn () => S.Continue (con c, ())} c () of
adamc@16 348 S.Return () => raise Fail "Core_util.Con.map"
adamc@16 349 | S.Continue (c, ()) => c
adamc@16 350
adamc@16 351 fun mapB {kind, con, bind} ctx c =
adamc@626 352 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adamc@16 353 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@16 354 bind = bind} ctx c () of
adamc@16 355 S.Continue (c, ()) => c
adamc@20 356 | S.Return _ => raise Fail "CoreUtil.Con.mapB: Impossible"
adamc@16 357
adamc@23 358 fun fold {kind, con} s c =
adamc@23 359 case mapfold {kind = fn k => fn s => S.Continue (k, kind (k, s)),
adamc@23 360 con = fn c => fn s => S.Continue (c, con (c, s))} c s of
adamc@23 361 S.Continue (_, s) => s
adamc@23 362 | S.Return _ => raise Fail "CoreUtil.Con.fold: Impossible"
adamc@23 363
adamc@16 364 fun exists {kind, con} k =
adamc@16 365 case mapfold {kind = fn k => fn () =>
adamc@16 366 if kind k then
adamc@16 367 S.Return ()
adamc@16 368 else
adamc@16 369 S.Continue (k, ()),
adamc@16 370 con = fn c => fn () =>
adamc@16 371 if con c then
adamc@16 372 S.Return ()
adamc@16 373 else
adamc@16 374 S.Continue (c, ())} k () of
adamc@16 375 S.Return _ => true
adamc@16 376 | S.Continue _ => false
adamc@16 377
adamc@193 378 fun foldMap {kind, con} s c =
adamc@193 379 case mapfold {kind = fn k => fn s => S.Continue (kind (k, s)),
adamc@193 380 con = fn c => fn s => S.Continue (con (c, s))} c s of
adamc@193 381 S.Continue v => v
adamc@193 382 | S.Return _ => raise Fail "CoreUtil.Con.foldMap: Impossible"
adamc@193 383
adamc@16 384 end
adamc@16 385
adamc@16 386 structure Exp = struct
adamc@16 387
adamc@479 388 open Order
adamc@479 389
adamc@479 390 fun pcCompare (pc1, pc2) =
adamc@479 391 case (pc1, pc2) of
adamc@479 392 (PConVar n1, PConVar n2) => Int.compare (n1, n2)
adamc@479 393 | (PConVar _, _) => LESS
adamc@479 394 | (_, PConVar _) => GREATER
adamc@479 395
adamc@479 396 | (PConFfi {mod = m1, datatyp = d1, con = c1, ...},
adamc@479 397 PConFfi {mod = m2, datatyp = d2, con = c2, ...}) =>
adamc@479 398 join (String.compare (m1, m2),
adamc@479 399 fn () => join (String.compare (d1, d2),
adamc@479 400 fn () => String.compare (c1, c2)))
adamc@479 401
adamc@479 402 fun pCompare ((p1, _), (p2, _)) =
adamc@479 403 case (p1, p2) of
adamc@479 404 (PWild, PWild) => EQUAL
adamc@479 405 | (PWild, _) => LESS
adamc@479 406 | (_, PWild) => GREATER
adamc@479 407
adamc@479 408 | (PVar _, PVar _) => EQUAL
adamc@479 409 | (PVar _, _) => LESS
adamc@479 410 | (_, PVar _) => GREATER
adamc@479 411
adamc@479 412 | (PPrim p1, PPrim p2) => Prim.compare (p1, p2)
adamc@479 413 | (PPrim _, _) => LESS
adamc@479 414 | (_, PPrim _) => GREATER
adamc@479 415
adamc@479 416 | (PCon (_, pc1, _, po1), PCon (_, pc2, _, po2)) =>
adamc@479 417 join (pcCompare (pc1, pc2),
adamc@479 418 fn () => joinO pCompare (po1, po2))
adamc@479 419 | (PCon _, _) => LESS
adamc@479 420 | (_, PCon _) => GREATER
adamc@479 421
adamc@479 422 | (PRecord xps1, PRecord xps2) =>
adamc@479 423 joinL (fn ((x1, p1, _), (x2, p2, _)) =>
adamc@479 424 join (String.compare (x1, x2),
adamc@479 425 fn () => pCompare (p1, p2))) (xps1, xps2)
adamc@479 426
adamc@479 427 fun compare ((e1, _), (e2, _)) =
adamc@479 428 case (e1, e2) of
adamc@479 429 (EPrim p1, EPrim p2) => Prim.compare (p1, p2)
adamc@479 430 | (EPrim _, _) => LESS
adamc@479 431 | (_, EPrim _) => GREATER
adamc@479 432
adamc@479 433 | (ERel n1, ERel n2) => Int.compare (n1, n2)
adamc@479 434 | (ERel _, _) => LESS
adamc@479 435 | (_, ERel _) => GREATER
adamc@479 436
adamc@479 437 | (ENamed n1, ENamed n2) => Int.compare (n1, n2)
adamc@479 438 | (ENamed _, _) => LESS
adamc@479 439 | (_, ENamed _) => GREATER
adamc@479 440
adamc@479 441 | (ECon (_, pc1, _, eo1), ECon (_, pc2, _, eo2)) =>
adamc@479 442 join (pcCompare (pc1, pc2),
adamc@479 443 fn () => joinO compare (eo1, eo2))
adamc@479 444 | (ECon _, _) => LESS
adamc@479 445 | (_, ECon _) => GREATER
adamc@479 446
adamc@479 447 | (EFfi (f1, x1), EFfi (f2, x2)) =>
adamc@479 448 join (String.compare (f1, f2),
adamc@479 449 fn () => String.compare (x1, x2))
adamc@479 450 | (EFfi _, _) => LESS
adamc@479 451 | (_, EFfi _) => GREATER
adamc@479 452
adamc@479 453 | (EFfiApp (f1, x1, es1), EFfiApp (f2, x2, es2)) =>
adamc@479 454 join (String.compare (f1, f2),
adamc@479 455 fn () => join (String.compare (x1, x2),
adamc@479 456 fn () => joinL compare (es1, es2)))
adamc@479 457 | (EFfiApp _, _) => LESS
adamc@479 458 | (_, EFfiApp _) => GREATER
adamc@479 459
adamc@479 460 | (EApp (f1, x1), EApp (f2, x2)) =>
adamc@479 461 join (compare (f1, f2),
adamc@479 462 fn () => compare (x1, x2))
adamc@479 463 | (EApp _, _) => LESS
adamc@479 464 | (_, EApp _) => GREATER
adamc@479 465
adamc@479 466 | (EAbs (_, _, _, e1), EAbs (_, _, _, e2)) => compare (e1, e2)
adamc@479 467 | (EAbs _, _) => LESS
adamc@479 468 | (_, EAbs _) => GREATER
adamc@479 469
adamc@479 470 | (ECApp (f1, x1), ECApp (f2, x2)) =>
adamc@479 471 join (compare (f1, f2),
adamc@479 472 fn () => Con.compare (x1, x2))
adamc@479 473 | (ECApp _, _) => LESS
adamc@479 474 | (_, ECApp _) => GREATER
adamc@479 475
adamc@479 476 | (ECAbs (_, _, e1), ECAbs (_, _, e2)) => compare (e1, e2)
adamc@479 477 | (ECAbs _, _) => LESS
adamc@479 478 | (_, ECAbs _) => GREATER
adamc@479 479
adamc@479 480 | (ERecord xes1, ERecord xes2) =>
adamc@479 481 joinL (fn ((x1, e1, _), (x2, e2, _)) =>
adamc@479 482 join (Con.compare (x1, x2),
adamc@479 483 fn () => compare (e1, e2))) (xes1, xes2)
adamc@479 484 | (ERecord _, _) => LESS
adamc@479 485 | (_, ERecord _) => GREATER
adamc@479 486
adamc@479 487 | (EField (e1, c1, _), EField (e2, c2, _)) =>
adamc@479 488 join (compare (e1, e2),
adamc@479 489 fn () => Con.compare (c1, c2))
adamc@479 490 | (EField _, _) => LESS
adamc@479 491 | (_, EField _) => GREATER
adamc@479 492
adamc@479 493 | (EConcat (x1, _, y1, _), EConcat (x2, _, y2, _)) =>
adamc@479 494 join (compare (x1, x2),
adamc@479 495 fn () => compare (y1, y2))
adamc@479 496 | (EConcat _, _) => LESS
adamc@479 497 | (_, EConcat _) => GREATER
adamc@479 498
adamc@479 499 | (ECut (e1, c1, _), ECut (e2, c2, _)) =>
adamc@479 500 join (compare (e1, e2),
adamc@493 501 fn () => Con.compare (c1, c2))
adamc@479 502 | (ECut _, _) => LESS
adamc@479 503 | (_, ECut _) => GREATER
adamc@479 504
adamc@493 505 | (ECutMulti (e1, c1, _), ECutMulti (e2, c2, _)) =>
adamc@493 506 join (compare (e1, e2),
adamc@493 507 fn () => Con.compare (c1, c2))
adamc@493 508 | (ECutMulti _, _) => LESS
adamc@493 509 | (_, ECutMulti _) => GREATER
adamc@493 510
adamc@479 511 | (ECase (e1, pes1, _), ECase (e2, pes2, _)) =>
adamc@479 512 join (compare (e1, e2),
adamc@479 513 fn () => joinL (fn ((p1, e1), (p2, e2)) =>
adamc@479 514 join (pCompare (p1, p2),
adamc@479 515 fn () => compare (e1, e2))) (pes1, pes2))
adamc@479 516 | (ECase _, _) => LESS
adamc@479 517 | (_, ECase _) => GREATER
adamc@479 518
adamc@479 519 | (EWrite e1, EWrite e2) => compare (e1, e2)
adamc@479 520 | (EWrite _, _) => LESS
adamc@479 521 | (_, EWrite _) => GREATER
adamc@479 522
adamc@479 523 | (EClosure (n1, es1), EClosure (n2, es2)) =>
adamc@479 524 join (Int.compare (n1, n2),
adamc@479 525 fn () => joinL compare (es1, es2))
adamc@479 526 | (EClosure _, _) => LESS
adamc@479 527 | (_, EClosure _) => GREATER
adamc@479 528
adamc@479 529 | (ELet (_, _, x1, e1), ELet (_, _, x2, e2)) =>
adamc@479 530 join (compare (x1, x2),
adamc@479 531 fn () => compare (e1, e2))
adamc@607 532 | (ELet _, _) => LESS
adamc@607 533 | (_, ELet _) => GREATER
adamc@607 534
adamc@609 535 | (EServerCall (n1, es1, e1, _), EServerCall (n2, es2, e2, _)) =>
adamc@607 536 join (Int.compare (n1, n2),
adamc@607 537 fn () => join (joinL compare (es1, es2),
adamc@607 538 fn () => compare (e1, e2)))
adamc@626 539 | (EServerCall _, _) => LESS
adamc@626 540 | (_, EServerCall _) => GREATER
adamc@626 541
adamc@626 542 | (EKAbs (_, e1), EKAbs (_, e2)) => compare (e1, e2)
adamc@626 543 | (EKAbs _, _) => LESS
adamc@626 544 | (_, EKAbs _) => GREATER
adamc@626 545
adamc@626 546 | (EKApp (e1, k1), EKApp (e2, k2)) =>
adamc@626 547 join (compare (e1, e2),
adamc@626 548 fn () => Kind.compare (k1, k2))
adamc@479 549
adamc@16 550 datatype binder =
adamc@626 551 RelK of string
adamc@626 552 | RelC of string * kind
adamc@20 553 | NamedC of string * int * kind * con option
adamc@16 554 | RelE of string * con
adamc@109 555 | NamedE of string * int * con * exp option * string
adamc@16 556
adamc@16 557 fun mapfoldB {kind = fk, con = fc, exp = fe, bind} =
adamc@16 558 let
adamc@626 559 val mfk = Kind.mapfoldB {kind = fk, bind = fn (ctx, x) => bind (ctx, RelK x)}
adamc@16 560
adamc@16 561 fun bind' (ctx, b) =
adamc@16 562 let
adamc@16 563 val b' = case b of
adamc@626 564 Con.RelK x => RelK x
adamc@626 565 | Con.RelC x => RelC x
adamc@626 566 | Con.NamedC x => NamedC x
adamc@16 567 in
adamc@16 568 bind (ctx, b')
adamc@16 569 end
adamc@16 570 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@16 571
adamc@16 572 fun mfe ctx e acc =
adamc@16 573 S.bindP (mfe' ctx e acc, fe ctx)
adamc@16 574
adamc@16 575 and mfe' ctx (eAll as (e, loc)) =
adamc@16 576 case e of
adamc@16 577 EPrim _ => S.return2 eAll
adamc@16 578 | ERel _ => S.return2 eAll
adamc@16 579 | ENamed _ => S.return2 eAll
adamc@192 580 | ECon (dk, pc, cs, NONE) =>
adamc@192 581 S.map2 (ListUtil.mapfold (mfc ctx) cs,
adamc@192 582 fn cs' =>
adamc@192 583 (ECon (dk, pc, cs', NONE), loc))
adamc@192 584 | ECon (dk, n, cs, SOME e) =>
adamc@192 585 S.bind2 (mfe ctx e,
adamc@192 586 fn e' =>
adamc@192 587 S.map2 (ListUtil.mapfold (mfc ctx) cs,
adamc@192 588 fn cs' =>
adamc@192 589 (ECon (dk, n, cs', SOME e'), loc)))
adamc@48 590 | EFfi _ => S.return2 eAll
adamc@48 591 | EFfiApp (m, x, es) =>
adamc@192 592 S.map2 (ListUtil.mapfold (mfe ctx) es,
adamc@48 593 fn es' =>
adamc@48 594 (EFfiApp (m, x, es'), loc))
adamc@16 595 | EApp (e1, e2) =>
adamc@16 596 S.bind2 (mfe ctx e1,
adamc@16 597 fn e1' =>
adamc@16 598 S.map2 (mfe ctx e2,
adamc@16 599 fn e2' =>
adamc@16 600 (EApp (e1', e2'), loc)))
adamc@26 601 | EAbs (x, dom, ran, e) =>
adamc@26 602 S.bind2 (mfc ctx dom,
adamc@26 603 fn dom' =>
adamc@26 604 S.bind2 (mfc ctx ran,
adamc@26 605 fn ran' =>
adamc@26 606 S.map2 (mfe (bind (ctx, RelE (x, dom'))) e,
adamc@26 607 fn e' =>
adamc@26 608 (EAbs (x, dom', ran', e'), loc))))
adamc@16 609
adamc@16 610 | ECApp (e, c) =>
adamc@16 611 S.bind2 (mfe ctx e,
adamc@16 612 fn e' =>
adamc@16 613 S.map2 (mfc ctx c,
adamc@16 614 fn c' =>
adamc@16 615 (ECApp (e', c'), loc)))
adamc@16 616 | ECAbs (x, k, e) =>
adamc@626 617 S.bind2 (mfk ctx k,
adamc@16 618 fn k' =>
adamc@16 619 S.map2 (mfe (bind (ctx, RelC (x, k))) e,
adamc@16 620 fn e' =>
adamc@16 621 (ECAbs (x, k', e'), loc)))
adamc@16 622
adamc@16 623 | ERecord xes =>
adamc@29 624 S.map2 (ListUtil.mapfold (fn (x, e, t) =>
adamc@16 625 S.bind2 (mfc ctx x,
adamc@16 626 fn x' =>
adamc@29 627 S.bind2 (mfe ctx e,
adamc@29 628 fn e' =>
adamc@29 629 S.map2 (mfc ctx t,
adamc@29 630 fn t' =>
adamc@29 631 (x', e', t')))))
adamc@16 632 xes,
adamc@16 633 fn xes' =>
adamc@16 634 (ERecord xes', loc))
adamc@16 635 | EField (e, c, {field, rest}) =>
adamc@16 636 S.bind2 (mfe ctx e,
adamc@16 637 fn e' =>
adamc@16 638 S.bind2 (mfc ctx c,
adamc@16 639 fn c' =>
adamc@16 640 S.bind2 (mfc ctx field,
adamc@16 641 fn field' =>
adamc@16 642 S.map2 (mfc ctx rest,
adamc@16 643 fn rest' =>
adamc@16 644 (EField (e', c', {field = field', rest = rest'}), loc)))))
adamc@445 645 | EConcat (e1, c1, e2, c2) =>
adamc@339 646 S.bind2 (mfe ctx e1,
adamc@339 647 fn e1' =>
adamc@445 648 S.bind2 (mfc ctx c1,
adamc@445 649 fn c1' =>
adamc@339 650 S.bind2 (mfe ctx e2,
adamc@339 651 fn e2' =>
adamc@445 652 S.map2 (mfc ctx c2,
adamc@445 653 fn c2' =>
adamc@445 654 (EConcat (e1', c1', e2', c2'),
adamc@445 655 loc)))))
adamc@149 656 | ECut (e, c, {field, rest}) =>
adamc@149 657 S.bind2 (mfe ctx e,
adamc@149 658 fn e' =>
adamc@149 659 S.bind2 (mfc ctx c,
adamc@149 660 fn c' =>
adamc@149 661 S.bind2 (mfc ctx field,
adamc@149 662 fn field' =>
adamc@149 663 S.map2 (mfc ctx rest,
adamc@149 664 fn rest' =>
adamc@149 665 (ECut (e', c', {field = field', rest = rest'}), loc)))))
adamc@493 666 | ECutMulti (e, c, {rest}) =>
adamc@493 667 S.bind2 (mfe ctx e,
adamc@493 668 fn e' =>
adamc@493 669 S.bind2 (mfc ctx c,
adamc@493 670 fn c' =>
adamc@493 671 S.map2 (mfc ctx rest,
adamc@493 672 fn rest' =>
adamc@493 673 (ECutMulti (e', c', {rest = rest'}), loc))))
adamc@102 674
adamc@182 675 | ECase (e, pes, {disc, result}) =>
adamc@177 676 S.bind2 (mfe ctx e,
adamc@177 677 fn e' =>
adamc@177 678 S.bind2 (ListUtil.mapfold (fn (p, e) =>
adamc@193 679 let
adamc@193 680 fun pb ((p, _), ctx) =
adamc@193 681 case p of
adamc@193 682 PWild => ctx
adamc@193 683 | PVar (x, t) => bind (ctx, RelE (x, t))
adamc@193 684 | PPrim _ => ctx
adamc@193 685 | PCon (_, _, _, NONE) => ctx
adamc@193 686 | PCon (_, _, _, SOME p) => pb (p, ctx)
adamc@193 687 | PRecord xps => foldl (fn ((_, p, _), ctx) =>
adamc@193 688 pb (p, ctx)) ctx xps
adamc@193 689 in
adamc@193 690 S.bind2 (mfp ctx p,
adamc@193 691 fn p' =>
adamc@193 692 S.map2 (mfe (pb (p', ctx)) e,
adamc@193 693 fn e' => (p', e')))
adamc@193 694 end) pes,
adamc@177 695 fn pes' =>
adamc@182 696 S.bind2 (mfc ctx disc,
adamc@182 697 fn disc' =>
adamc@182 698 S.map2 (mfc ctx result,
adamc@182 699 fn result' =>
adamc@182 700 (ECase (e', pes', {disc = disc', result = result'}), loc)))))
adamc@177 701
adamc@102 702 | EWrite e =>
adamc@102 703 S.map2 (mfe ctx e,
adamc@102 704 fn e' =>
adamc@102 705 (EWrite e', loc))
adamc@110 706
adamc@110 707 | EClosure (n, es) =>
adamc@110 708 S.map2 (ListUtil.mapfold (mfe ctx) es,
adamc@110 709 fn es' =>
adamc@110 710 (EClosure (n, es'), loc))
adamc@193 711
adamc@450 712 | ELet (x, t, e1, e2) =>
adamc@450 713 S.bind2 (mfc ctx t,
adamc@450 714 fn t' =>
adamc@450 715 S.bind2 (mfe ctx e1,
adamc@450 716 fn e1' =>
adamc@453 717 S.map2 (mfe (bind (ctx, RelE (x, t'))) e2,
adamc@450 718 fn e2' =>
adamc@450 719 (ELet (x, t', e1', e2'), loc))))
adamc@450 720
adamc@609 721 | EServerCall (n, es, e, t) =>
adamc@607 722 S.bind2 (ListUtil.mapfold (mfe ctx) es,
adamc@607 723 fn es' =>
adamc@609 724 S.bind2 (mfe ctx e,
adamc@607 725 fn e' =>
adamc@609 726 S.map2 (mfc ctx t,
adamc@609 727 fn t' =>
adamc@609 728 (EServerCall (n, es', e', t'), loc))))
adamc@626 729
adamc@626 730 | EKAbs (x, e) =>
adamc@626 731 S.map2 (mfe (bind (ctx, RelK x)) e,
adamc@626 732 fn e' =>
adamc@626 733 (EKAbs (x, e'), loc))
adamc@626 734 | EKApp (e, k) =>
adamc@626 735 S.bind2 (mfe ctx e,
adamc@626 736 fn e' =>
adamc@626 737 S.map2 (mfk ctx k,
adamc@626 738 fn k' =>
adamc@626 739 (EKApp (e', k'), loc)))
adamc@607 740
adamc@193 741 and mfp ctx (pAll as (p, loc)) =
adamc@193 742 case p of
adamc@193 743 PWild => S.return2 pAll
adamc@193 744 | PVar (x, t) =>
adamc@193 745 S.map2 (mfc ctx t,
adamc@193 746 fn t' =>
adamc@193 747 (PVar (x, t'), loc))
adamc@193 748 | PPrim _ => S.return2 pAll
adamc@193 749 | PCon (dk, pc, args, po) =>
adamc@193 750 S.bind2 (mfpc ctx pc,
adamc@193 751 fn pc' =>
adamc@193 752 S.bind2 (ListUtil.mapfold (mfc ctx) args,
adamc@193 753 fn args' =>
adamc@193 754 S.map2 ((case po of
adamc@193 755 NONE => S.return2 NONE
adamc@193 756 | SOME p => S.map2 (mfp ctx p, SOME)),
adamc@193 757 fn po' =>
adamc@193 758 (PCon (dk, pc', args', po'), loc))))
adamc@193 759 | PRecord xps =>
adamc@193 760 S.map2 (ListUtil.mapfold (fn (x, p, c) =>
adamc@193 761 S.bind2 (mfp ctx p,
adamc@193 762 fn p' =>
adamc@193 763 S.map2 (mfc ctx c,
adamc@193 764 fn c' =>
adamc@193 765 (x, p', c')))) xps,
adamc@193 766 fn xps' =>
adamc@193 767 (PRecord xps', loc))
adamc@193 768
adamc@193 769 and mfpc ctx pc =
adamc@193 770 case pc of
adamc@193 771 PConVar _ => S.return2 pc
adamc@193 772 | PConFfi {mod = m, datatyp, params, con, arg, kind} =>
adamc@193 773 S.map2 ((case arg of
adamc@193 774 NONE => S.return2 NONE
adamc@193 775 | SOME c => S.map2 (mfc ctx c, SOME)),
adamc@193 776 fn arg' =>
adamc@193 777 PConFfi {mod = m, datatyp = datatyp, params = params,
adamc@193 778 con = con, arg = arg', kind = kind})
adamc@16 779 in
adamc@16 780 mfe
adamc@16 781 end
adamc@16 782
adamc@16 783 fun mapfold {kind = fk, con = fc, exp = fe} =
adamc@626 784 mapfoldB {kind = fn () => fk,
adamc@16 785 con = fn () => fc,
adamc@16 786 exp = fn () => fe,
adamc@16 787 bind = fn ((), _) => ()} ()
adamc@16 788
adamc@21 789 fun mapB {kind, con, exp, bind} ctx e =
adamc@626 790 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adamc@21 791 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@21 792 exp = fn ctx => fn e => fn () => S.Continue (exp ctx e, ()),
adamc@21 793 bind = bind} ctx e () of
adamc@21 794 S.Continue (e, ()) => e
adamc@21 795 | S.Return _ => raise Fail "CoreUtil.Exp.mapB: Impossible"
adamc@21 796
adamc@16 797 fun map {kind, con, exp} e =
adamc@16 798 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@16 799 con = fn c => fn () => S.Continue (con c, ()),
adamc@16 800 exp = fn e => fn () => S.Continue (exp e, ())} e () of
adamc@16 801 S.Return () => raise Fail "Core_util.Exp.map"
adamc@16 802 | S.Continue (e, ()) => e
adamc@16 803
adamc@23 804 fun fold {kind, con, exp} s e =
adamc@23 805 case mapfold {kind = fn k => fn s => S.Continue (k, kind (k, s)),
adamc@23 806 con = fn c => fn s => S.Continue (c, con (c, s)),
adamc@23 807 exp = fn e => fn s => S.Continue (e, exp (e, s))} e s of
adamc@23 808 S.Continue (_, s) => s
adamc@23 809 | S.Return _ => raise Fail "CoreUtil.Exp.fold: Impossible"
adamc@23 810
adamc@484 811 fun foldB {kind, con, exp, bind} ctx s e =
adamc@626 812 case mapfoldB {kind = fn ctx => fn k => fn s => S.Continue (k, kind (ctx, k, s)),
adamc@484 813 con = fn ctx => fn c => fn s => S.Continue (c, con (ctx, c, s)),
adamc@484 814 exp = fn ctx => fn e => fn s => S.Continue (e, exp (ctx, e, s)),
adamc@484 815 bind = bind} ctx e s of
adamc@484 816 S.Continue (_, s) => s
adamc@484 817 | S.Return _ => raise Fail "CoreUtil.Exp.foldB: Impossible"
adamc@484 818
adamc@16 819 fun exists {kind, con, exp} k =
adamc@16 820 case mapfold {kind = fn k => fn () =>
adamc@16 821 if kind k then
adamc@16 822 S.Return ()
adamc@16 823 else
adamc@16 824 S.Continue (k, ()),
adamc@16 825 con = fn c => fn () =>
adamc@16 826 if con c then
adamc@16 827 S.Return ()
adamc@16 828 else
adamc@16 829 S.Continue (c, ()),
adamc@16 830 exp = fn e => fn () =>
adamc@16 831 if exp e then
adamc@16 832 S.Return ()
adamc@16 833 else
adamc@16 834 S.Continue (e, ())} k () of
adamc@16 835 S.Return _ => true
adamc@16 836 | S.Continue _ => false
adamc@16 837
adamc@479 838 fun existsB {kind, con, exp, bind} ctx k =
adamc@626 839 case mapfoldB {kind = fn ctx => fn k => fn () =>
adamc@626 840 if kind (ctx, k) then
adamc@626 841 S.Return ()
adamc@626 842 else
adamc@626 843 S.Continue (k, ()),
adamc@479 844 con = fn ctx => fn c => fn () =>
adamc@479 845 if con (ctx, c) then
adamc@479 846 S.Return ()
adamc@479 847 else
adamc@479 848 S.Continue (c, ()),
adamc@479 849 exp = fn ctx => fn e => fn () =>
adamc@479 850 if exp (ctx, e) then
adamc@479 851 S.Return ()
adamc@479 852 else
adamc@479 853 S.Continue (e, ()),
adamc@479 854 bind = bind} ctx k () of
adamc@479 855 S.Return _ => true
adamc@479 856 | S.Continue _ => false
adamc@479 857
adamc@443 858 fun foldMap {kind, con, exp} s e =
adamc@443 859 case mapfold {kind = fn k => fn s => S.Continue (kind (k, s)),
adamc@443 860 con = fn c => fn s => S.Continue (con (c, s)),
adamc@443 861 exp = fn e => fn s => S.Continue (exp (e, s))} e s of
adamc@443 862 S.Continue v => v
adamc@443 863 | S.Return _ => raise Fail "CoreUtil.Exp.foldMap: Impossible"
adamc@443 864
adamc@488 865 fun foldMapB {kind, con, exp, bind} ctx s e =
adamc@626 866 case mapfoldB {kind = fn ctx => fn k => fn s => S.Continue (kind (ctx, k, s)),
adamc@488 867 con = fn ctx => fn c => fn s => S.Continue (con (ctx, c, s)),
adamc@488 868 exp = fn ctx => fn e => fn s => S.Continue (exp (ctx, e, s)),
adamc@488 869 bind = bind} ctx e s of
adamc@488 870 S.Continue v => v
adamc@488 871 | S.Return _ => raise Fail "CoreUtil.Exp.foldMapB: Impossible"
adamc@488 872
adamc@16 873 end
adamc@16 874
adamc@20 875 structure Decl = struct
adamc@20 876
adamc@20 877 datatype binder = datatype Exp.binder
adamc@20 878
adamc@20 879 fun mapfoldB {kind = fk, con = fc, exp = fe, decl = fd, bind} =
adamc@20 880 let
adamc@626 881 val mfk = Kind.mapfoldB {kind = fk, bind = fn (ctx, x) => bind (ctx, RelK x)}
adamc@20 882
adamc@20 883 fun bind' (ctx, b) =
adamc@20 884 let
adamc@20 885 val b' = case b of
adamc@626 886 Con.RelK x => RelK x
adamc@626 887 | Con.RelC x => RelC x
adamc@626 888 | Con.NamedC x => NamedC x
adamc@20 889 in
adamc@20 890 bind (ctx, b')
adamc@20 891 end
adamc@20 892 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@20 893
adamc@20 894 val mfe = Exp.mapfoldB {kind = fk, con = fc, exp = fe, bind = bind}
adamc@20 895
adamc@20 896 fun mfd ctx d acc =
adamc@20 897 S.bindP (mfd' ctx d acc, fd ctx)
adamc@20 898
adamc@20 899 and mfd' ctx (dAll as (d, loc)) =
adamc@20 900 case d of
adamc@20 901 DCon (x, n, k, c) =>
adamc@626 902 S.bind2 (mfk ctx k,
adamc@20 903 fn k' =>
adamc@20 904 S.map2 (mfc ctx c,
adamc@20 905 fn c' =>
adamc@20 906 (DCon (x, n, k', c'), loc)))
adamc@192 907 | DDatatype (x, n, xs, xncs) =>
adamc@196 908 let
adamc@196 909 val k = (KType, loc)
adamc@196 910 val k' = foldl (fn (_, k') => (KArrow (k, k'), loc)) k xs
adamc@196 911 val ctx' = bind (ctx, NamedC (x, n, k', NONE))
adamc@196 912 in
adamc@196 913 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@196 914 case c of
adamc@196 915 NONE => S.return2 (x, n, c)
adamc@196 916 | SOME c =>
adamc@196 917 S.map2 (mfc ctx' c,
adamc@196 918 fn c' => (x, n, SOME c'))) xncs,
adamc@196 919 fn xncs' =>
adamc@196 920 (DDatatype (x, n, xs, xncs'), loc))
adamc@196 921 end
adamc@125 922 | DVal vi =>
adamc@125 923 S.map2 (mfvi ctx vi,
adamc@125 924 fn vi' =>
adamc@125 925 (DVal vi', loc))
adamc@125 926 | DValRec vis =>
adamc@127 927 let
adamc@127 928 val ctx = foldl (fn ((x, n, t, e, s), ctx) => bind (ctx, NamedE (x, n, t, NONE, s)))
adamc@127 929 ctx vis
adamc@127 930 in
adamc@127 931 S.map2 (ListUtil.mapfold (mfvi ctx) vis,
adamc@127 932 fn vis' =>
adamc@127 933 (DValRec vis', loc))
adamc@127 934 end
adamc@109 935 | DExport _ => S.return2 dAll
adamc@247 936 | DTable (x, n, c, s) =>
adamc@247 937 S.map2 (mfc ctx c,
adamc@461 938 fn c' =>
adamc@461 939 (DTable (x, n, c', s), loc))
adamc@338 940 | DSequence _ => S.return2 dAll
adamc@271 941 | DDatabase _ => S.return2 dAll
adamc@461 942 | DCookie (x, n, c, s) =>
adamc@461 943 S.map2 (mfc ctx c,
adamc@461 944 fn c' =>
adamc@461 945 (DCookie (x, n, c', s), loc))
adamc@125 946
adamc@125 947 and mfvi ctx (x, n, t, e, s) =
adamc@125 948 S.bind2 (mfc ctx t,
adamc@125 949 fn t' =>
adamc@125 950 S.map2 (mfe ctx e,
adamc@125 951 fn e' =>
adamc@125 952 (x, n, t', e', s)))
adamc@20 953 in
adamc@20 954 mfd
adamc@20 955 end
adamc@20 956
adamc@23 957 fun mapfold {kind = fk, con = fc, exp = fe, decl = fd} =
adamc@626 958 mapfoldB {kind = fn () => fk,
adamc@23 959 con = fn () => fc,
adamc@23 960 exp = fn () => fe,
adamc@23 961 decl = fn () => fd,
adamc@23 962 bind = fn ((), _) => ()} ()
adamc@23 963
adamc@23 964 fun fold {kind, con, exp, decl} s d =
adamc@23 965 case mapfold {kind = fn k => fn s => S.Continue (k, kind (k, s)),
adamc@23 966 con = fn c => fn s => S.Continue (c, con (c, s)),
adamc@23 967 exp = fn e => fn s => S.Continue (e, exp (e, s)),
adamc@23 968 decl = fn d => fn s => S.Continue (d, decl (d, s))} d s of
adamc@23 969 S.Continue (_, s) => s
adamc@23 970 | S.Return _ => raise Fail "CoreUtil.Decl.fold: Impossible"
adamc@23 971
adamc@110 972 fun foldMap {kind, con, exp, decl} s d =
adamc@110 973 case mapfold {kind = fn k => fn s => S.Continue (kind (k, s)),
adamc@110 974 con = fn c => fn s => S.Continue (con (c, s)),
adamc@110 975 exp = fn e => fn s => S.Continue (exp (e, s)),
adamc@110 976 decl = fn d => fn s => S.Continue (decl (d, s))} d s of
adamc@110 977 S.Continue v => v
adamc@110 978 | S.Return _ => raise Fail "CoreUtil.Decl.foldMap: Impossible"
adamc@110 979
adamc@484 980 fun foldMapB {kind, con, exp, decl, bind} ctx s d =
adamc@626 981 case mapfoldB {kind = fn ctx => fn k => fn s => S.Continue (kind (ctx, k, s)),
adamc@484 982 con = fn ctx => fn c => fn s => S.Continue (con (ctx, c, s)),
adamc@484 983 exp = fn ctx => fn e => fn s => S.Continue (exp (ctx, e, s)),
adamc@484 984 decl = fn ctx => fn d => fn s => S.Continue (decl (ctx, d, s)),
adamc@484 985 bind = bind} ctx d s of
adamc@484 986 S.Continue v => v
adamc@484 987 | S.Return _ => raise Fail "CoreUtil.Decl.foldMapB: Impossible"
adamc@484 988
adamc@522 989 fun exists {kind, con, exp, decl} d =
adamc@522 990 case mapfold {kind = fn k => fn () =>
adamc@522 991 if kind k then
adamc@522 992 S.Return ()
adamc@522 993 else
adamc@522 994 S.Continue (k, ()),
adamc@522 995 con = fn c => fn () =>
adamc@522 996 if con c then
adamc@522 997 S.Return ()
adamc@522 998 else
adamc@522 999 S.Continue (c, ()),
adamc@522 1000 exp = fn e => fn () =>
adamc@522 1001 if exp e then
adamc@522 1002 S.Return ()
adamc@522 1003 else
adamc@522 1004 S.Continue (e, ()),
adamc@522 1005 decl = fn d => fn () =>
adamc@522 1006 if decl d then
adamc@522 1007 S.Return ()
adamc@522 1008 else
adamc@522 1009 S.Continue (d, ())} d () of
adamc@522 1010 S.Return _ => true
adamc@522 1011 | S.Continue _ => false
adamc@522 1012
adamc@16 1013 end
adamc@20 1014
adamc@20 1015 structure File = struct
adamc@20 1016
adamc@20 1017 datatype binder = datatype Exp.binder
adamc@20 1018
adamc@20 1019 fun mapfoldB (all as {bind, ...}) =
adamc@20 1020 let
adamc@20 1021 val mfd = Decl.mapfoldB all
adamc@20 1022
adamc@20 1023 fun mff ctx ds =
adamc@20 1024 case ds of
adamc@20 1025 nil => S.return2 nil
adamc@20 1026 | d :: ds' =>
adamc@20 1027 S.bind2 (mfd ctx d,
adamc@20 1028 fn d' =>
adamc@20 1029 let
adamc@100 1030 val ctx' =
adamc@20 1031 case #1 d' of
adamc@100 1032 DCon (x, n, k, c) => bind (ctx, NamedC (x, n, k, SOME c))
adamc@192 1033 | DDatatype (x, n, xs, xncs) =>
adamc@163 1034 let
adamc@192 1035 val loc = #2 d'
adamc@192 1036 val k = (KType, loc)
adamc@192 1037 val k' = foldl (fn (_, k') => (KArrow (k, k'), loc)) k xs
adamc@192 1038
adamc@192 1039 val ctx = bind (ctx, NamedC (x, n, k', NONE))
adamc@163 1040 val t = (CNamed n, #2 d')
adamc@192 1041 val t = ListUtil.foldli (fn (i, _, t) => (CApp (t, (CRel i, loc)), loc))
adamc@192 1042 t xs
adamc@163 1043 in
adamc@163 1044 foldl (fn ((x, n, to), ctx) =>
adamc@163 1045 let
adamc@163 1046 val t = case to of
adamc@163 1047 NONE => t
adamc@163 1048 | SOME t' => (TFun (t', t), #2 d')
adamc@192 1049 val t = foldr (fn (x, t) => (TCFun (x, k, t), loc))
adamc@192 1050 t xs
adamc@163 1051 in
adamc@163 1052 bind (ctx, NamedE (x, n, t, NONE, ""))
adamc@163 1053 end)
adamc@163 1054 ctx xncs
adamc@163 1055 end
adamc@109 1056 | DVal (x, n, t, e, s) => bind (ctx, NamedE (x, n, t, SOME e, s))
adamc@125 1057 | DValRec vis =>
adamc@127 1058 foldl (fn ((x, n, t, e, s), ctx) => bind (ctx, NamedE (x, n, t, NONE, s)))
adamc@125 1059 ctx vis
adamc@109 1060 | DExport _ => ctx
adamc@247 1061 | DTable (x, n, c, s) =>
adamc@247 1062 let
adamc@338 1063 val t = (CApp ((CFfi ("Basis", "sql_table"), #2 d'), c), #2 d')
adamc@338 1064 in
adamc@338 1065 bind (ctx, NamedE (x, n, t, NONE, s))
adamc@338 1066 end
adamc@338 1067 | DSequence (x, n, s) =>
adamc@338 1068 let
adamc@338 1069 val t = (CFfi ("Basis", "sql_sequence"), #2 d')
adamc@247 1070 in
adamc@247 1071 bind (ctx, NamedE (x, n, t, NONE, s))
adamc@247 1072 end
adamc@271 1073 | DDatabase _ => ctx
adamc@461 1074 | DCookie (x, n, c, s) =>
adamc@461 1075 let
adamc@461 1076 val t = (CApp ((CFfi ("Basis", "http_cookie"), #2 d'), c), #2 d')
adamc@461 1077 in
adamc@461 1078 bind (ctx, NamedE (x, n, t, NONE, s))
adamc@461 1079 end
adamc@20 1080 in
adamc@20 1081 S.map2 (mff ctx' ds',
adamc@20 1082 fn ds' =>
adamc@20 1083 d' :: ds')
adamc@20 1084 end)
adamc@20 1085 in
adamc@20 1086 mff
adamc@20 1087 end
adamc@20 1088
adamc@23 1089 fun mapfold {kind = fk, con = fc, exp = fe, decl = fd} =
adamc@626 1090 mapfoldB {kind = fn () => fk,
adamc@23 1091 con = fn () => fc,
adamc@23 1092 exp = fn () => fe,
adamc@23 1093 decl = fn () => fd,
adamc@23 1094 bind = fn ((), _) => ()} ()
adamc@23 1095
adamc@20 1096 fun mapB {kind, con, exp, decl, bind} ctx ds =
adamc@626 1097 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adamc@20 1098 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@20 1099 exp = fn ctx => fn e => fn () => S.Continue (exp ctx e, ()),
adamc@20 1100 decl = fn ctx => fn d => fn () => S.Continue (decl ctx d, ()),
adamc@20 1101 bind = bind} ctx ds () of
adamc@20 1102 S.Continue (ds, ()) => ds
adamc@20 1103 | S.Return _ => raise Fail "CoreUtil.File.mapB: Impossible"
adamc@20 1104
adamc@482 1105 fun map {kind, con, exp, decl} ds =
adamc@626 1106 mapB {kind = fn () => kind,
adamc@482 1107 con = fn () => con,
adamc@482 1108 exp = fn () => exp,
adamc@482 1109 decl = fn () => decl,
adamc@482 1110 bind = fn _ => ()} () ds
adamc@482 1111
adamc@23 1112 fun fold {kind, con, exp, decl} s d =
adamc@23 1113 case mapfold {kind = fn k => fn s => S.Continue (k, kind (k, s)),
adamc@23 1114 con = fn c => fn s => S.Continue (c, con (c, s)),
adamc@23 1115 exp = fn e => fn s => S.Continue (e, exp (e, s)),
adamc@23 1116 decl = fn d => fn s => S.Continue (d, decl (d, s))} d s of
adamc@23 1117 S.Continue (_, s) => s
adamc@23 1118 | S.Return _ => raise Fail "CoreUtil.File.fold: Impossible"
adamc@23 1119
adamc@110 1120 fun foldMap {kind, con, exp, decl} s d =
adamc@110 1121 case mapfold {kind = fn k => fn s => S.Continue (kind (k, s)),
adamc@110 1122 con = fn c => fn s => S.Continue (con (c, s)),
adamc@110 1123 exp = fn e => fn s => S.Continue (exp (e, s)),
adamc@110 1124 decl = fn d => fn s => S.Continue (decl (d, s))} d s of
adamc@110 1125 S.Continue v => v
adamc@110 1126 | S.Return _ => raise Fail "CoreUtil.File.foldMap: Impossible"
adamc@110 1127
adamc@179 1128 val maxName = foldl (fn ((d, _) : decl, count) =>
adamc@179 1129 case d of
adamc@179 1130 DCon (_, n, _, _) => Int.max (n, count)
adamc@398 1131 | DDatatype (_, n, _, ns) =>
adamc@398 1132 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@398 1133 (Int.max (n, count)) ns
adamc@179 1134 | DVal (_, n, _, _, _) => Int.max (n, count)
adamc@179 1135 | DValRec vis => foldl (fn ((_, n, _, _, _), count) => Int.max (n, count)) count vis
adamc@247 1136 | DExport _ => count
adamc@271 1137 | DTable (_, n, _, _) => Int.max (n, count)
adamc@338 1138 | DSequence (_, n, _) => Int.max (n, count)
adamc@461 1139 | DDatabase _ => count
adamc@461 1140 | DCookie (_, n, _, _) => Int.max (n, count)) 0
adamc@179 1141
adamc@20 1142 end
adamc@20 1143
adamc@20 1144 end