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annotate src/core_util.sml @ 2071:739172204214

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Introduce recv timeout controlled by '-T' option in http.c This should prevent a DDoS attack where attacker and keeps the connection open but send no data.
author Sergey Mironov <grrwlf@gmail.com>
date Tue, 02 Sep 2014 17:42:10 +0000
parents e15234fbb163
children b90103106177
rev   line source
adam@1848 1 (* Copyright (c) 2008-2010, 2013, 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@1185 378 fun existsB {kind, con, bind} ctx c =
adamc@1185 379 case mapfoldB {kind = fn ctx => fn k => fn () =>
adamc@1185 380 if kind (ctx, k) then
adamc@1185 381 S.Return ()
adamc@1185 382 else
adamc@1185 383 S.Continue (k, ()),
adamc@1185 384 con = fn ctx => fn c => fn () =>
adamc@1185 385 if con (ctx, c) then
adamc@1185 386 S.Return ()
adamc@1185 387 else
adamc@1185 388 S.Continue (c, ()),
adamc@1185 389 bind = bind} ctx c () of
adamc@1185 390 S.Return _ => true
adamc@1185 391 | S.Continue _ => false
adamc@1185 392
adamc@193 393 fun foldMap {kind, con} s c =
adamc@193 394 case mapfold {kind = fn k => fn s => S.Continue (kind (k, s)),
adamc@193 395 con = fn c => fn s => S.Continue (con (c, s))} c s of
adamc@193 396 S.Continue v => v
adamc@193 397 | S.Return _ => raise Fail "CoreUtil.Con.foldMap: Impossible"
adamc@193 398
adamc@16 399 end
adamc@16 400
adamc@16 401 structure Exp = struct
adamc@16 402
adamc@479 403 open Order
adamc@479 404
adamc@479 405 fun pcCompare (pc1, pc2) =
adamc@479 406 case (pc1, pc2) of
adamc@479 407 (PConVar n1, PConVar n2) => Int.compare (n1, n2)
adamc@479 408 | (PConVar _, _) => LESS
adamc@479 409 | (_, PConVar _) => GREATER
adamc@479 410
adamc@479 411 | (PConFfi {mod = m1, datatyp = d1, con = c1, ...},
adamc@479 412 PConFfi {mod = m2, datatyp = d2, con = c2, ...}) =>
adamc@479 413 join (String.compare (m1, m2),
adamc@479 414 fn () => join (String.compare (d1, d2),
adamc@479 415 fn () => String.compare (c1, c2)))
adamc@479 416
adamc@479 417 fun pCompare ((p1, _), (p2, _)) =
adamc@479 418 case (p1, p2) of
adamc@479 419 (PWild, PWild) => EQUAL
adamc@479 420 | (PWild, _) => LESS
adamc@479 421 | (_, PWild) => GREATER
adamc@479 422
adamc@479 423 | (PVar _, PVar _) => EQUAL
adamc@479 424 | (PVar _, _) => LESS
adamc@479 425 | (_, PVar _) => GREATER
adamc@479 426
adamc@479 427 | (PPrim p1, PPrim p2) => Prim.compare (p1, p2)
adamc@479 428 | (PPrim _, _) => LESS
adamc@479 429 | (_, PPrim _) => GREATER
adamc@479 430
adamc@479 431 | (PCon (_, pc1, _, po1), PCon (_, pc2, _, po2)) =>
adamc@479 432 join (pcCompare (pc1, pc2),
adamc@479 433 fn () => joinO pCompare (po1, po2))
adamc@479 434 | (PCon _, _) => LESS
adamc@479 435 | (_, PCon _) => GREATER
adamc@479 436
adamc@479 437 | (PRecord xps1, PRecord xps2) =>
adamc@479 438 joinL (fn ((x1, p1, _), (x2, p2, _)) =>
adamc@479 439 join (String.compare (x1, x2),
adamc@479 440 fn () => pCompare (p1, p2))) (xps1, xps2)
adamc@479 441
adam@1848 442 fun fmCompare (fm1, fm2) =
adam@1848 443 case (fm1, fm2) of
adam@1848 444 (None, None) => EQUAL
adam@1848 445 | (None, _) => LESS
adam@1848 446 | (_, None) => GREATER
adam@1848 447
adam@1848 448 | (Error, Error) => EQUAL
adam@1848 449
adamc@479 450 fun compare ((e1, _), (e2, _)) =
adamc@479 451 case (e1, e2) of
adamc@479 452 (EPrim p1, EPrim p2) => Prim.compare (p1, p2)
adamc@479 453 | (EPrim _, _) => LESS
adamc@479 454 | (_, EPrim _) => GREATER
adamc@479 455
adamc@479 456 | (ERel n1, ERel n2) => Int.compare (n1, n2)
adamc@479 457 | (ERel _, _) => LESS
adamc@479 458 | (_, ERel _) => GREATER
adamc@479 459
adamc@479 460 | (ENamed n1, ENamed n2) => Int.compare (n1, n2)
adamc@479 461 | (ENamed _, _) => LESS
adamc@479 462 | (_, ENamed _) => GREATER
adamc@479 463
adamc@479 464 | (ECon (_, pc1, _, eo1), ECon (_, pc2, _, eo2)) =>
adamc@479 465 join (pcCompare (pc1, pc2),
adamc@479 466 fn () => joinO compare (eo1, eo2))
adamc@479 467 | (ECon _, _) => LESS
adamc@479 468 | (_, ECon _) => GREATER
adamc@479 469
adamc@479 470 | (EFfi (f1, x1), EFfi (f2, x2)) =>
adamc@479 471 join (String.compare (f1, f2),
adamc@479 472 fn () => String.compare (x1, x2))
adamc@479 473 | (EFfi _, _) => LESS
adamc@479 474 | (_, EFfi _) => GREATER
adamc@479 475
adamc@479 476 | (EFfiApp (f1, x1, es1), EFfiApp (f2, x2, es2)) =>
adamc@479 477 join (String.compare (f1, f2),
adamc@479 478 fn () => join (String.compare (x1, x2),
adam@1663 479 fn () => joinL (fn ((e1, _), (e2, _)) => compare (e1, e2))(es1, es2)))
adamc@479 480 | (EFfiApp _, _) => LESS
adamc@479 481 | (_, EFfiApp _) => GREATER
adamc@479 482
adamc@479 483 | (EApp (f1, x1), EApp (f2, x2)) =>
adamc@479 484 join (compare (f1, f2),
adamc@479 485 fn () => compare (x1, x2))
adamc@479 486 | (EApp _, _) => LESS
adamc@479 487 | (_, EApp _) => GREATER
adamc@479 488
adamc@479 489 | (EAbs (_, _, _, e1), EAbs (_, _, _, e2)) => compare (e1, e2)
adamc@479 490 | (EAbs _, _) => LESS
adamc@479 491 | (_, EAbs _) => GREATER
adamc@479 492
adamc@479 493 | (ECApp (f1, x1), ECApp (f2, x2)) =>
adamc@479 494 join (compare (f1, f2),
adamc@479 495 fn () => Con.compare (x1, x2))
adamc@479 496 | (ECApp _, _) => LESS
adamc@479 497 | (_, ECApp _) => GREATER
adamc@479 498
adamc@479 499 | (ECAbs (_, _, e1), ECAbs (_, _, e2)) => compare (e1, e2)
adamc@479 500 | (ECAbs _, _) => LESS
adamc@479 501 | (_, ECAbs _) => GREATER
adamc@479 502
adamc@479 503 | (ERecord xes1, ERecord xes2) =>
adamc@479 504 joinL (fn ((x1, e1, _), (x2, e2, _)) =>
adamc@479 505 join (Con.compare (x1, x2),
adamc@479 506 fn () => compare (e1, e2))) (xes1, xes2)
adamc@479 507 | (ERecord _, _) => LESS
adamc@479 508 | (_, ERecord _) => GREATER
adamc@479 509
adamc@479 510 | (EField (e1, c1, _), EField (e2, c2, _)) =>
adamc@479 511 join (compare (e1, e2),
adamc@479 512 fn () => Con.compare (c1, c2))
adamc@479 513 | (EField _, _) => LESS
adamc@479 514 | (_, EField _) => GREATER
adamc@479 515
adamc@479 516 | (EConcat (x1, _, y1, _), EConcat (x2, _, y2, _)) =>
adamc@479 517 join (compare (x1, x2),
adamc@479 518 fn () => compare (y1, y2))
adamc@479 519 | (EConcat _, _) => LESS
adamc@479 520 | (_, EConcat _) => GREATER
adamc@479 521
adamc@479 522 | (ECut (e1, c1, _), ECut (e2, c2, _)) =>
adamc@479 523 join (compare (e1, e2),
adamc@493 524 fn () => Con.compare (c1, c2))
adamc@479 525 | (ECut _, _) => LESS
adamc@479 526 | (_, ECut _) => GREATER
adamc@479 527
adamc@493 528 | (ECutMulti (e1, c1, _), ECutMulti (e2, c2, _)) =>
adamc@493 529 join (compare (e1, e2),
adamc@493 530 fn () => Con.compare (c1, c2))
adamc@493 531 | (ECutMulti _, _) => LESS
adamc@493 532 | (_, ECutMulti _) => GREATER
adamc@493 533
adamc@479 534 | (ECase (e1, pes1, _), ECase (e2, pes2, _)) =>
adamc@479 535 join (compare (e1, e2),
adamc@479 536 fn () => joinL (fn ((p1, e1), (p2, e2)) =>
adamc@479 537 join (pCompare (p1, p2),
adamc@479 538 fn () => compare (e1, e2))) (pes1, pes2))
adamc@479 539 | (ECase _, _) => LESS
adamc@479 540 | (_, ECase _) => GREATER
adamc@479 541
adamc@479 542 | (EWrite e1, EWrite e2) => compare (e1, e2)
adamc@479 543 | (EWrite _, _) => LESS
adamc@479 544 | (_, EWrite _) => GREATER
adamc@479 545
adamc@479 546 | (EClosure (n1, es1), EClosure (n2, es2)) =>
adamc@479 547 join (Int.compare (n1, n2),
adamc@479 548 fn () => joinL compare (es1, es2))
adamc@479 549 | (EClosure _, _) => LESS
adamc@479 550 | (_, EClosure _) => GREATER
adamc@479 551
adamc@479 552 | (ELet (_, _, x1, e1), ELet (_, _, x2, e2)) =>
adamc@479 553 join (compare (x1, x2),
adamc@479 554 fn () => compare (e1, e2))
adamc@607 555 | (ELet _, _) => LESS
adamc@607 556 | (_, ELet _) => GREATER
adamc@607 557
adam@1848 558 | (EServerCall (n1, es1, _, fm1), EServerCall (n2, es2, _, fm2)) =>
adamc@607 559 join (Int.compare (n1, n2),
adam@1848 560 fn () => join (fmCompare (fm1, fm2),
adam@1848 561 fn () => joinL compare (es1, es2)))
adamc@626 562 | (EServerCall _, _) => LESS
adamc@626 563 | (_, EServerCall _) => GREATER
adamc@626 564
adamc@626 565 | (EKAbs (_, e1), EKAbs (_, e2)) => compare (e1, e2)
adamc@626 566 | (EKAbs _, _) => LESS
adamc@626 567 | (_, EKAbs _) => GREATER
adamc@626 568
adamc@626 569 | (EKApp (e1, k1), EKApp (e2, k2)) =>
adamc@626 570 join (compare (e1, e2),
adamc@626 571 fn () => Kind.compare (k1, k2))
adamc@479 572
adamc@16 573 datatype binder =
adamc@626 574 RelK of string
adamc@626 575 | RelC of string * kind
adamc@20 576 | NamedC of string * int * kind * con option
adamc@16 577 | RelE of string * con
adamc@109 578 | NamedE of string * int * con * exp option * string
adamc@16 579
adamc@16 580 fun mapfoldB {kind = fk, con = fc, exp = fe, bind} =
adamc@16 581 let
adamc@626 582 val mfk = Kind.mapfoldB {kind = fk, bind = fn (ctx, x) => bind (ctx, RelK x)}
adamc@16 583
adamc@16 584 fun bind' (ctx, b) =
adamc@16 585 let
adamc@16 586 val b' = case b of
adamc@626 587 Con.RelK x => RelK x
adamc@626 588 | Con.RelC x => RelC x
adamc@626 589 | Con.NamedC x => NamedC x
adamc@16 590 in
adamc@16 591 bind (ctx, b')
adamc@16 592 end
adamc@16 593 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@16 594
adamc@16 595 fun mfe ctx e acc =
adamc@16 596 S.bindP (mfe' ctx e acc, fe ctx)
adamc@16 597
adam@1663 598 and mfet ctx (e, t) =
adam@1663 599 S.bind2 (mfe ctx e,
adam@1663 600 fn e' =>
adam@1663 601 S.map2 (mfc ctx t,
adam@1663 602 fn t' => (e', t')))
adam@1663 603
adamc@16 604 and mfe' ctx (eAll as (e, loc)) =
adamc@16 605 case e of
adamc@16 606 EPrim _ => S.return2 eAll
adamc@16 607 | ERel _ => S.return2 eAll
adamc@16 608 | ENamed _ => S.return2 eAll
adamc@192 609 | ECon (dk, pc, cs, NONE) =>
adamc@192 610 S.map2 (ListUtil.mapfold (mfc ctx) cs,
adamc@192 611 fn cs' =>
adamc@192 612 (ECon (dk, pc, cs', NONE), loc))
adamc@192 613 | ECon (dk, n, cs, SOME e) =>
adamc@192 614 S.bind2 (mfe ctx e,
adamc@192 615 fn e' =>
adamc@192 616 S.map2 (ListUtil.mapfold (mfc ctx) cs,
adamc@192 617 fn cs' =>
adamc@192 618 (ECon (dk, n, cs', SOME e'), loc)))
adamc@48 619 | EFfi _ => S.return2 eAll
adamc@48 620 | EFfiApp (m, x, es) =>
adam@1663 621 S.map2 (ListUtil.mapfold (mfet ctx) es,
adamc@48 622 fn es' =>
adamc@48 623 (EFfiApp (m, x, es'), loc))
adamc@16 624 | EApp (e1, e2) =>
adamc@16 625 S.bind2 (mfe ctx e1,
adamc@16 626 fn e1' =>
adamc@16 627 S.map2 (mfe ctx e2,
adamc@16 628 fn e2' =>
adamc@16 629 (EApp (e1', e2'), loc)))
adamc@26 630 | EAbs (x, dom, ran, e) =>
adamc@26 631 S.bind2 (mfc ctx dom,
adamc@26 632 fn dom' =>
adamc@26 633 S.bind2 (mfc ctx ran,
adamc@26 634 fn ran' =>
adamc@26 635 S.map2 (mfe (bind (ctx, RelE (x, dom'))) e,
adamc@26 636 fn e' =>
adamc@26 637 (EAbs (x, dom', ran', e'), loc))))
adamc@16 638
adamc@16 639 | ECApp (e, c) =>
adamc@16 640 S.bind2 (mfe ctx e,
adamc@16 641 fn e' =>
adamc@16 642 S.map2 (mfc ctx c,
adamc@16 643 fn c' =>
adamc@16 644 (ECApp (e', c'), loc)))
adamc@16 645 | ECAbs (x, k, e) =>
adamc@626 646 S.bind2 (mfk ctx k,
adamc@16 647 fn k' =>
adamc@16 648 S.map2 (mfe (bind (ctx, RelC (x, k))) e,
adamc@16 649 fn e' =>
adamc@16 650 (ECAbs (x, k', e'), loc)))
adamc@16 651
adamc@16 652 | ERecord xes =>
adamc@29 653 S.map2 (ListUtil.mapfold (fn (x, e, t) =>
adamc@16 654 S.bind2 (mfc ctx x,
adamc@16 655 fn x' =>
adamc@29 656 S.bind2 (mfe ctx e,
adamc@29 657 fn e' =>
adamc@29 658 S.map2 (mfc ctx t,
adamc@29 659 fn t' =>
adamc@29 660 (x', e', t')))))
adamc@16 661 xes,
adamc@16 662 fn xes' =>
adamc@16 663 (ERecord xes', loc))
adamc@16 664 | EField (e, c, {field, rest}) =>
adamc@16 665 S.bind2 (mfe ctx e,
adamc@16 666 fn e' =>
adamc@16 667 S.bind2 (mfc ctx c,
adamc@16 668 fn c' =>
adamc@16 669 S.bind2 (mfc ctx field,
adamc@16 670 fn field' =>
adamc@16 671 S.map2 (mfc ctx rest,
adamc@16 672 fn rest' =>
adamc@16 673 (EField (e', c', {field = field', rest = rest'}), loc)))))
adamc@445 674 | EConcat (e1, c1, e2, c2) =>
adamc@339 675 S.bind2 (mfe ctx e1,
adamc@339 676 fn e1' =>
adamc@445 677 S.bind2 (mfc ctx c1,
adamc@445 678 fn c1' =>
adamc@339 679 S.bind2 (mfe ctx e2,
adamc@339 680 fn e2' =>
adamc@445 681 S.map2 (mfc ctx c2,
adamc@445 682 fn c2' =>
adamc@445 683 (EConcat (e1', c1', e2', c2'),
adamc@445 684 loc)))))
adamc@149 685 | ECut (e, c, {field, rest}) =>
adamc@149 686 S.bind2 (mfe ctx e,
adamc@149 687 fn e' =>
adamc@149 688 S.bind2 (mfc ctx c,
adamc@149 689 fn c' =>
adamc@149 690 S.bind2 (mfc ctx field,
adamc@149 691 fn field' =>
adamc@149 692 S.map2 (mfc ctx rest,
adamc@149 693 fn rest' =>
adamc@149 694 (ECut (e', c', {field = field', rest = rest'}), loc)))))
adamc@493 695 | ECutMulti (e, c, {rest}) =>
adamc@493 696 S.bind2 (mfe ctx e,
adamc@493 697 fn e' =>
adamc@493 698 S.bind2 (mfc ctx c,
adamc@493 699 fn c' =>
adamc@493 700 S.map2 (mfc ctx rest,
adamc@493 701 fn rest' =>
adamc@493 702 (ECutMulti (e', c', {rest = rest'}), loc))))
adamc@102 703
adamc@182 704 | ECase (e, pes, {disc, result}) =>
adamc@177 705 S.bind2 (mfe ctx e,
adamc@177 706 fn e' =>
adamc@177 707 S.bind2 (ListUtil.mapfold (fn (p, e) =>
adamc@193 708 let
adamc@193 709 fun pb ((p, _), ctx) =
adamc@193 710 case p of
adamc@193 711 PWild => ctx
adamc@193 712 | PVar (x, t) => bind (ctx, RelE (x, t))
adamc@193 713 | PPrim _ => ctx
adamc@193 714 | PCon (_, _, _, NONE) => ctx
adamc@193 715 | PCon (_, _, _, SOME p) => pb (p, ctx)
adamc@193 716 | PRecord xps => foldl (fn ((_, p, _), ctx) =>
adamc@193 717 pb (p, ctx)) ctx xps
adamc@193 718 in
adamc@193 719 S.bind2 (mfp ctx p,
adamc@193 720 fn p' =>
adamc@193 721 S.map2 (mfe (pb (p', ctx)) e,
adamc@193 722 fn e' => (p', e')))
adamc@193 723 end) pes,
adamc@177 724 fn pes' =>
adamc@182 725 S.bind2 (mfc ctx disc,
adamc@182 726 fn disc' =>
adamc@182 727 S.map2 (mfc ctx result,
adamc@182 728 fn result' =>
adamc@182 729 (ECase (e', pes', {disc = disc', result = result'}), loc)))))
adamc@177 730
adamc@102 731 | EWrite e =>
adamc@102 732 S.map2 (mfe ctx e,
adamc@102 733 fn e' =>
adamc@102 734 (EWrite e', loc))
adamc@110 735
adamc@110 736 | EClosure (n, es) =>
adamc@110 737 S.map2 (ListUtil.mapfold (mfe ctx) es,
adamc@110 738 fn es' =>
adamc@110 739 (EClosure (n, es'), loc))
adamc@193 740
adamc@450 741 | ELet (x, t, e1, e2) =>
adamc@450 742 S.bind2 (mfc ctx t,
adamc@450 743 fn t' =>
adamc@450 744 S.bind2 (mfe ctx e1,
adamc@450 745 fn e1' =>
adamc@453 746 S.map2 (mfe (bind (ctx, RelE (x, t'))) e2,
adamc@450 747 fn e2' =>
adamc@450 748 (ELet (x, t', e1', e2'), loc))))
adamc@450 749
adam@1848 750 | EServerCall (n, es, t, fm) =>
adamc@607 751 S.bind2 (ListUtil.mapfold (mfe ctx) es,
adamc@607 752 fn es' =>
adamc@1020 753 S.map2 (mfc ctx t,
adamc@1020 754 fn t' =>
adam@1848 755 (EServerCall (n, es', t', fm), loc)))
adamc@954 756
adamc@626 757 | EKAbs (x, e) =>
adamc@626 758 S.map2 (mfe (bind (ctx, RelK x)) e,
adamc@626 759 fn e' =>
adamc@626 760 (EKAbs (x, e'), loc))
adamc@626 761 | EKApp (e, k) =>
adamc@626 762 S.bind2 (mfe ctx e,
adamc@626 763 fn e' =>
adamc@626 764 S.map2 (mfk ctx k,
adamc@626 765 fn k' =>
adamc@626 766 (EKApp (e', k'), loc)))
adamc@607 767
adamc@193 768 and mfp ctx (pAll as (p, loc)) =
adamc@193 769 case p of
adamc@193 770 PWild => S.return2 pAll
adamc@193 771 | PVar (x, t) =>
adamc@193 772 S.map2 (mfc ctx t,
adamc@193 773 fn t' =>
adamc@193 774 (PVar (x, t'), loc))
adamc@193 775 | PPrim _ => S.return2 pAll
adamc@193 776 | PCon (dk, pc, args, po) =>
adamc@193 777 S.bind2 (mfpc ctx pc,
adamc@193 778 fn pc' =>
adamc@193 779 S.bind2 (ListUtil.mapfold (mfc ctx) args,
adamc@193 780 fn args' =>
adamc@193 781 S.map2 ((case po of
adamc@193 782 NONE => S.return2 NONE
adamc@193 783 | SOME p => S.map2 (mfp ctx p, SOME)),
adamc@193 784 fn po' =>
adamc@193 785 (PCon (dk, pc', args', po'), loc))))
adamc@193 786 | PRecord xps =>
adamc@193 787 S.map2 (ListUtil.mapfold (fn (x, p, c) =>
adamc@193 788 S.bind2 (mfp ctx p,
adamc@193 789 fn p' =>
adamc@193 790 S.map2 (mfc ctx c,
adamc@193 791 fn c' =>
adamc@193 792 (x, p', c')))) xps,
adamc@193 793 fn xps' =>
adamc@193 794 (PRecord xps', loc))
adamc@193 795
adamc@193 796 and mfpc ctx pc =
adamc@193 797 case pc of
adamc@193 798 PConVar _ => S.return2 pc
adamc@193 799 | PConFfi {mod = m, datatyp, params, con, arg, kind} =>
adamc@193 800 S.map2 ((case arg of
adamc@193 801 NONE => S.return2 NONE
adamc@796 802 | SOME c =>
adamc@796 803 let
adamc@796 804 val k = (KType, ErrorMsg.dummySpan)
adamc@796 805 val ctx' = foldl (fn (x, ctx) => bind (ctx, RelC (x, k))) ctx params
adamc@796 806 in
adamc@796 807 S.map2 (mfc ctx' c, SOME)
adamc@796 808 end),
adamc@193 809 fn arg' =>
adamc@193 810 PConFfi {mod = m, datatyp = datatyp, params = params,
adamc@193 811 con = con, arg = arg', kind = kind})
adamc@16 812 in
adamc@16 813 mfe
adamc@16 814 end
adamc@16 815
adamc@16 816 fun mapfold {kind = fk, con = fc, exp = fe} =
adamc@626 817 mapfoldB {kind = fn () => fk,
adamc@16 818 con = fn () => fc,
adamc@16 819 exp = fn () => fe,
adamc@16 820 bind = fn ((), _) => ()} ()
adamc@16 821
adamc@21 822 fun mapB {kind, con, exp, bind} ctx e =
adamc@626 823 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adamc@21 824 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@21 825 exp = fn ctx => fn e => fn () => S.Continue (exp ctx e, ()),
adamc@21 826 bind = bind} ctx e () of
adamc@21 827 S.Continue (e, ()) => e
adamc@21 828 | S.Return _ => raise Fail "CoreUtil.Exp.mapB: Impossible"
adamc@21 829
adamc@16 830 fun map {kind, con, exp} e =
adamc@16 831 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@16 832 con = fn c => fn () => S.Continue (con c, ()),
adamc@16 833 exp = fn e => fn () => S.Continue (exp e, ())} e () of
adamc@16 834 S.Return () => raise Fail "Core_util.Exp.map"
adamc@16 835 | S.Continue (e, ()) => e
adamc@16 836
adamc@23 837 fun fold {kind, con, exp} s e =
adamc@23 838 case mapfold {kind = fn k => fn s => S.Continue (k, kind (k, s)),
adamc@23 839 con = fn c => fn s => S.Continue (c, con (c, s)),
adamc@23 840 exp = fn e => fn s => S.Continue (e, exp (e, s))} e s of
adamc@23 841 S.Continue (_, s) => s
adamc@23 842 | S.Return _ => raise Fail "CoreUtil.Exp.fold: Impossible"
adamc@23 843
adamc@484 844 fun foldB {kind, con, exp, bind} ctx s e =
adamc@626 845 case mapfoldB {kind = fn ctx => fn k => fn s => S.Continue (k, kind (ctx, k, s)),
adamc@484 846 con = fn ctx => fn c => fn s => S.Continue (c, con (ctx, c, s)),
adamc@484 847 exp = fn ctx => fn e => fn s => S.Continue (e, exp (ctx, e, s)),
adamc@484 848 bind = bind} ctx e s of
adamc@484 849 S.Continue (_, s) => s
adamc@484 850 | S.Return _ => raise Fail "CoreUtil.Exp.foldB: Impossible"
adamc@484 851
adamc@16 852 fun exists {kind, con, exp} k =
adamc@16 853 case mapfold {kind = fn k => fn () =>
adamc@16 854 if kind k then
adamc@16 855 S.Return ()
adamc@16 856 else
adamc@16 857 S.Continue (k, ()),
adamc@16 858 con = fn c => fn () =>
adamc@16 859 if con c then
adamc@16 860 S.Return ()
adamc@16 861 else
adamc@16 862 S.Continue (c, ()),
adamc@16 863 exp = fn e => fn () =>
adamc@16 864 if exp e then
adamc@16 865 S.Return ()
adamc@16 866 else
adamc@16 867 S.Continue (e, ())} k () of
adamc@16 868 S.Return _ => true
adamc@16 869 | S.Continue _ => false
adamc@16 870
adamc@479 871 fun existsB {kind, con, exp, bind} ctx k =
adamc@626 872 case mapfoldB {kind = fn ctx => fn k => fn () =>
adamc@626 873 if kind (ctx, k) then
adamc@626 874 S.Return ()
adamc@626 875 else
adamc@626 876 S.Continue (k, ()),
adamc@479 877 con = fn ctx => fn c => fn () =>
adamc@479 878 if con (ctx, c) then
adamc@479 879 S.Return ()
adamc@479 880 else
adamc@479 881 S.Continue (c, ()),
adamc@479 882 exp = fn ctx => fn e => fn () =>
adamc@479 883 if exp (ctx, e) then
adamc@479 884 S.Return ()
adamc@479 885 else
adamc@479 886 S.Continue (e, ()),
adamc@479 887 bind = bind} ctx k () of
adamc@479 888 S.Return _ => true
adamc@479 889 | S.Continue _ => false
adamc@479 890
adamc@443 891 fun foldMap {kind, con, exp} s e =
adamc@443 892 case mapfold {kind = fn k => fn s => S.Continue (kind (k, s)),
adamc@443 893 con = fn c => fn s => S.Continue (con (c, s)),
adamc@443 894 exp = fn e => fn s => S.Continue (exp (e, s))} e s of
adamc@443 895 S.Continue v => v
adamc@443 896 | S.Return _ => raise Fail "CoreUtil.Exp.foldMap: Impossible"
adamc@443 897
adamc@488 898 fun foldMapB {kind, con, exp, bind} ctx s e =
adamc@626 899 case mapfoldB {kind = fn ctx => fn k => fn s => S.Continue (kind (ctx, k, s)),
adamc@488 900 con = fn ctx => fn c => fn s => S.Continue (con (ctx, c, s)),
adamc@488 901 exp = fn ctx => fn e => fn s => S.Continue (exp (ctx, e, s)),
adamc@488 902 bind = bind} ctx e s of
adamc@488 903 S.Continue v => v
adamc@488 904 | S.Return _ => raise Fail "CoreUtil.Exp.foldMapB: Impossible"
adamc@488 905
adamc@16 906 end
adamc@16 907
adamc@20 908 structure Decl = struct
adamc@20 909
adamc@20 910 datatype binder = datatype Exp.binder
adamc@20 911
adamc@20 912 fun mapfoldB {kind = fk, con = fc, exp = fe, decl = fd, bind} =
adamc@20 913 let
adamc@626 914 val mfk = Kind.mapfoldB {kind = fk, bind = fn (ctx, x) => bind (ctx, RelK x)}
adamc@20 915
adamc@20 916 fun bind' (ctx, b) =
adamc@20 917 let
adamc@20 918 val b' = case b of
adamc@626 919 Con.RelK x => RelK x
adamc@626 920 | Con.RelC x => RelC x
adamc@626 921 | Con.NamedC x => NamedC x
adamc@20 922 in
adamc@20 923 bind (ctx, b')
adamc@20 924 end
adamc@20 925 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@20 926
adamc@20 927 val mfe = Exp.mapfoldB {kind = fk, con = fc, exp = fe, bind = bind}
adamc@20 928
adamc@20 929 fun mfd ctx d acc =
adamc@20 930 S.bindP (mfd' ctx d acc, fd ctx)
adamc@20 931
adamc@20 932 and mfd' ctx (dAll as (d, loc)) =
adamc@20 933 case d of
adamc@20 934 DCon (x, n, k, c) =>
adamc@626 935 S.bind2 (mfk ctx k,
adamc@20 936 fn k' =>
adamc@20 937 S.map2 (mfc ctx c,
adamc@20 938 fn c' =>
adamc@20 939 (DCon (x, n, k', c'), loc)))
adamc@807 940 | DDatatype dts =>
adamc@807 941 S.map2 (ListUtil.mapfold (fn (x, n, xs, xncs) =>
adamc@807 942 let
adamc@807 943 val k = (KType, loc)
adamc@807 944 val k' = foldl (fn (_, k') => (KArrow (k, k'), loc)) k xs
adamc@807 945 val ctx' = bind (ctx, NamedC (x, n, k', NONE))
adamc@807 946 in
adamc@807 947 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@807 948 case c of
adamc@807 949 NONE => S.return2 (x, n, c)
adamc@807 950 | SOME c =>
adamc@807 951 S.map2 (mfc ctx' c,
adamc@807 952 fn c' => (x, n, SOME c'))) xncs,
adamc@807 953 fn xncs' => (x, n, xs, xncs'))
adamc@807 954 end) dts,
adamc@807 955 fn dts' =>
adamc@807 956 (DDatatype dts', loc))
adamc@125 957 | DVal vi =>
adamc@125 958 S.map2 (mfvi ctx vi,
adamc@125 959 fn vi' =>
adamc@125 960 (DVal vi', loc))
adamc@125 961 | DValRec vis =>
adamc@127 962 let
adamc@127 963 val ctx = foldl (fn ((x, n, t, e, s), ctx) => bind (ctx, NamedE (x, n, t, NONE, s)))
adamc@127 964 ctx vis
adamc@127 965 in
adamc@127 966 S.map2 (ListUtil.mapfold (mfvi ctx) vis,
adamc@127 967 fn vis' =>
adamc@127 968 (DValRec vis', loc))
adamc@127 969 end
adamc@109 970 | DExport _ => S.return2 dAll
adamc@707 971 | DTable (x, n, c, s, pe, pc, ce, cc) =>
adamc@802 972 let
adamc@802 973 val loc = #2 ce
adamc@802 974 val ct = (CFfi ("Basis", "sql_table"), loc)
adamc@802 975 val ct = (CApp (ct, (CConcat (pc, cc), loc)), loc)
adamc@802 976 val ct = (CApp (ct, cc), loc)
adamc@802 977 val ctx' = bind (ctx, NamedE (x, n, ct, NONE, s))
adamc@802 978 in
adamc@802 979 S.bind2 (mfc ctx c,
adamc@802 980 fn c' =>
adamc@802 981 S.bind2 (mfe ctx' pe,
adamc@802 982 fn pe' =>
adamc@802 983 S.bind2 (mfc ctx pc,
adamc@802 984 fn pc' =>
adamc@802 985 S.bind2 (mfe ctx' ce,
adamc@802 986 fn ce' =>
adamc@802 987 S.map2 (mfc ctx cc,
adamc@802 988 fn cc' =>
adamc@802 989 (DTable (x, n, c', s, pe', pc', ce', cc'), loc))))))
adamc@802 990 end
adamc@338 991 | DSequence _ => S.return2 dAll
adamc@754 992 | DView (x, n, s, e, c) =>
adamc@754 993 S.bind2 (mfe ctx e,
adamc@754 994 fn e' =>
adamc@754 995 S.map2 (mfc ctx c,
adamc@754 996 fn c' =>
adamc@754 997 (DView (x, n, s, e', c'), loc)))
adamc@271 998 | DDatabase _ => S.return2 dAll
adamc@461 999 | DCookie (x, n, c, s) =>
adamc@461 1000 S.map2 (mfc ctx c,
adamc@461 1001 fn c' =>
adamc@461 1002 (DCookie (x, n, c', s), loc))
adamc@720 1003 | DStyle _ => S.return2 dAll
adamc@1075 1004 | DTask (e1, e2) =>
adamc@1075 1005 S.bind2 (mfe ctx e1,
adamc@1075 1006 fn e1' =>
adamc@1075 1007 S.map2 (mfe ctx e2,
adamc@1075 1008 fn e2' =>
adamc@1075 1009 (DTask (e1', e2'), loc)))
adamc@1199 1010 | DPolicy e =>
adamc@1199 1011 S.map2 (mfe ctx e,
adamc@1199 1012 fn e' =>
adamc@1199 1013 (DPolicy e', loc))
adamc@125 1014
adam@1294 1015 | DOnError _ => S.return2 dAll
adam@1294 1016
adamc@125 1017 and mfvi ctx (x, n, t, e, s) =
adamc@125 1018 S.bind2 (mfc ctx t,
adamc@125 1019 fn t' =>
adamc@125 1020 S.map2 (mfe ctx e,
adamc@125 1021 fn e' =>
adamc@125 1022 (x, n, t', e', s)))
adamc@20 1023 in
adamc@20 1024 mfd
adamc@20 1025 end
adamc@20 1026
adamc@23 1027 fun mapfold {kind = fk, con = fc, exp = fe, decl = fd} =
adamc@626 1028 mapfoldB {kind = fn () => fk,
adamc@23 1029 con = fn () => fc,
adamc@23 1030 exp = fn () => fe,
adamc@23 1031 decl = fn () => fd,
adamc@23 1032 bind = fn ((), _) => ()} ()
adamc@23 1033
adamc@23 1034 fun fold {kind, con, exp, decl} s d =
adamc@23 1035 case mapfold {kind = fn k => fn s => S.Continue (k, kind (k, s)),
adamc@23 1036 con = fn c => fn s => S.Continue (c, con (c, s)),
adamc@23 1037 exp = fn e => fn s => S.Continue (e, exp (e, s)),
adamc@23 1038 decl = fn d => fn s => S.Continue (d, decl (d, s))} d s of
adamc@23 1039 S.Continue (_, s) => s
adamc@23 1040 | S.Return _ => raise Fail "CoreUtil.Decl.fold: Impossible"
adamc@23 1041
adamc@110 1042 fun foldMap {kind, con, exp, decl} s d =
adamc@110 1043 case mapfold {kind = fn k => fn s => S.Continue (kind (k, s)),
adamc@110 1044 con = fn c => fn s => S.Continue (con (c, s)),
adamc@110 1045 exp = fn e => fn s => S.Continue (exp (e, s)),
adamc@110 1046 decl = fn d => fn s => S.Continue (decl (d, s))} d s of
adamc@110 1047 S.Continue v => v
adamc@110 1048 | S.Return _ => raise Fail "CoreUtil.Decl.foldMap: Impossible"
adamc@110 1049
adamc@484 1050 fun foldMapB {kind, con, exp, decl, bind} ctx s d =
adamc@626 1051 case mapfoldB {kind = fn ctx => fn k => fn s => S.Continue (kind (ctx, k, s)),
adamc@484 1052 con = fn ctx => fn c => fn s => S.Continue (con (ctx, c, s)),
adamc@484 1053 exp = fn ctx => fn e => fn s => S.Continue (exp (ctx, e, s)),
adamc@484 1054 decl = fn ctx => fn d => fn s => S.Continue (decl (ctx, d, s)),
adamc@484 1055 bind = bind} ctx d s of
adamc@484 1056 S.Continue v => v
adamc@484 1057 | S.Return _ => raise Fail "CoreUtil.Decl.foldMapB: Impossible"
adamc@484 1058
adamc@522 1059 fun exists {kind, con, exp, decl} d =
adamc@522 1060 case mapfold {kind = fn k => fn () =>
adamc@522 1061 if kind k then
adamc@522 1062 S.Return ()
adamc@522 1063 else
adamc@522 1064 S.Continue (k, ()),
adamc@522 1065 con = fn c => fn () =>
adamc@522 1066 if con c then
adamc@522 1067 S.Return ()
adamc@522 1068 else
adamc@522 1069 S.Continue (c, ()),
adamc@522 1070 exp = fn e => fn () =>
adamc@522 1071 if exp e then
adamc@522 1072 S.Return ()
adamc@522 1073 else
adamc@522 1074 S.Continue (e, ()),
adamc@522 1075 decl = fn d => fn () =>
adamc@522 1076 if decl d then
adamc@522 1077 S.Return ()
adamc@522 1078 else
adamc@522 1079 S.Continue (d, ())} d () of
adamc@522 1080 S.Return _ => true
adamc@522 1081 | S.Continue _ => false
adamc@522 1082
adamc@16 1083 end
adamc@20 1084
adamc@20 1085 structure File = struct
adamc@20 1086
adamc@20 1087 datatype binder = datatype Exp.binder
adamc@20 1088
adamc@20 1089 fun mapfoldB (all as {bind, ...}) =
adamc@20 1090 let
adamc@20 1091 val mfd = Decl.mapfoldB all
adamc@20 1092
adamc@20 1093 fun mff ctx ds =
adamc@20 1094 case ds of
adamc@20 1095 nil => S.return2 nil
adamc@20 1096 | d :: ds' =>
adamc@20 1097 S.bind2 (mfd ctx d,
adamc@20 1098 fn d' =>
adamc@20 1099 let
adamc@100 1100 val ctx' =
adamc@20 1101 case #1 d' of
adamc@100 1102 DCon (x, n, k, c) => bind (ctx, NamedC (x, n, k, SOME c))
adamc@807 1103 | DDatatype dts =>
adamc@807 1104 foldl (fn ((x, n, xs, xncs), ctx) =>
adamc@807 1105 let
adamc@807 1106 val loc = #2 d'
adamc@807 1107 val k = (KType, loc)
adamc@807 1108 val k' = foldl (fn (_, k') => (KArrow (k, k'), loc)) k xs
adamc@192 1109
adamc@807 1110 val ctx = bind (ctx, NamedC (x, n, k', NONE))
adamc@807 1111 val t = (CNamed n, #2 d')
adamc@807 1112 val t = ListUtil.foldli (fn (i, _, t) =>
adamc@807 1113 (CApp (t, (CRel i, loc)), loc))
adamc@807 1114 t xs
adamc@807 1115 in
adamc@807 1116 foldl (fn ((x, n, to), ctx) =>
adamc@807 1117 let
adamc@807 1118 val t = case to of
adamc@807 1119 NONE => t
adamc@807 1120 | SOME t' => (TFun (t', t), #2 d')
adamc@807 1121 val t = foldr (fn (x, t) => (TCFun (x, k, t), loc))
adamc@807 1122 t xs
adamc@807 1123 in
adamc@807 1124 bind (ctx, NamedE (x, n, t, NONE, ""))
adamc@807 1125 end)
adamc@807 1126 ctx xncs
adamc@807 1127 end)
adamc@807 1128 ctx dts
adamc@109 1129 | DVal (x, n, t, e, s) => bind (ctx, NamedE (x, n, t, SOME e, s))
adamc@125 1130 | DValRec vis =>
adamc@127 1131 foldl (fn ((x, n, t, e, s), ctx) => bind (ctx, NamedE (x, n, t, NONE, s)))
adamc@125 1132 ctx vis
adamc@109 1133 | DExport _ => ctx
adamc@707 1134 | DTable (x, n, c, s, _, pc, _, cc) =>
adamc@247 1135 let
adamc@705 1136 val loc = #2 d'
adamc@705 1137 val ct = (CFfi ("Basis", "sql_table"), loc)
adamc@707 1138 val ct = (CApp (ct, (CConcat (pc, cc), loc)), loc)
adamc@705 1139 val ct = (CApp (ct, cc), loc)
adamc@338 1140 in
adamc@705 1141 bind (ctx, NamedE (x, n, ct, NONE, s))
adamc@338 1142 end
adamc@338 1143 | DSequence (x, n, s) =>
adamc@338 1144 let
adamc@338 1145 val t = (CFfi ("Basis", "sql_sequence"), #2 d')
adamc@247 1146 in
adamc@247 1147 bind (ctx, NamedE (x, n, t, NONE, s))
adamc@247 1148 end
adamc@754 1149 | DView (x, n, s, _, c) =>
adamc@754 1150 let
adamc@754 1151 val loc = #2 d'
adamc@754 1152 val ct = (CFfi ("Basis", "sql_view"), loc)
adamc@754 1153 val ct = (CApp (ct, c), loc)
adamc@754 1154 in
adamc@754 1155 bind (ctx, NamedE (x, n, ct, NONE, s))
adamc@754 1156 end
adamc@271 1157 | DDatabase _ => ctx
adamc@461 1158 | DCookie (x, n, c, s) =>
adamc@461 1159 let
adamc@461 1160 val t = (CApp ((CFfi ("Basis", "http_cookie"), #2 d'), c), #2 d')
adamc@461 1161 in
adamc@461 1162 bind (ctx, NamedE (x, n, t, NONE, s))
adamc@461 1163 end
adamc@720 1164 | DStyle (x, n, s) =>
adamc@718 1165 let
adamc@720 1166 val t = (CFfi ("Basis", "css_class"), #2 d')
adamc@718 1167 in
adamc@718 1168 bind (ctx, NamedE (x, n, t, NONE, s))
adamc@718 1169 end
adamc@1075 1170 | DTask _ => ctx
adamc@1199 1171 | DPolicy _ => ctx
adam@1294 1172 | DOnError _ => ctx
adamc@20 1173 in
adamc@20 1174 S.map2 (mff ctx' ds',
adamc@20 1175 fn ds' =>
adamc@20 1176 d' :: ds')
adamc@20 1177 end)
adamc@20 1178 in
adamc@20 1179 mff
adamc@20 1180 end
adamc@20 1181
adamc@23 1182 fun mapfold {kind = fk, con = fc, exp = fe, decl = fd} =
adamc@626 1183 mapfoldB {kind = fn () => fk,
adamc@23 1184 con = fn () => fc,
adamc@23 1185 exp = fn () => fe,
adamc@23 1186 decl = fn () => fd,
adamc@23 1187 bind = fn ((), _) => ()} ()
adamc@23 1188
adamc@20 1189 fun mapB {kind, con, exp, decl, bind} ctx ds =
adamc@626 1190 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adamc@20 1191 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@20 1192 exp = fn ctx => fn e => fn () => S.Continue (exp ctx e, ()),
adamc@20 1193 decl = fn ctx => fn d => fn () => S.Continue (decl ctx d, ()),
adamc@20 1194 bind = bind} ctx ds () of
adamc@20 1195 S.Continue (ds, ()) => ds
adamc@20 1196 | S.Return _ => raise Fail "CoreUtil.File.mapB: Impossible"
adamc@20 1197
adamc@482 1198 fun map {kind, con, exp, decl} ds =
adamc@626 1199 mapB {kind = fn () => kind,
adamc@482 1200 con = fn () => con,
adamc@482 1201 exp = fn () => exp,
adamc@482 1202 decl = fn () => decl,
adamc@482 1203 bind = fn _ => ()} () ds
adamc@482 1204
adamc@23 1205 fun fold {kind, con, exp, decl} s d =
adamc@23 1206 case mapfold {kind = fn k => fn s => S.Continue (k, kind (k, s)),
adamc@23 1207 con = fn c => fn s => S.Continue (c, con (c, s)),
adamc@23 1208 exp = fn e => fn s => S.Continue (e, exp (e, s)),
adamc@23 1209 decl = fn d => fn s => S.Continue (d, decl (d, s))} d s of
adamc@23 1210 S.Continue (_, s) => s
adamc@23 1211 | S.Return _ => raise Fail "CoreUtil.File.fold: Impossible"
adamc@23 1212
adamc@110 1213 fun foldMap {kind, con, exp, decl} s d =
adamc@110 1214 case mapfold {kind = fn k => fn s => S.Continue (kind (k, s)),
adamc@110 1215 con = fn c => fn s => S.Continue (con (c, s)),
adamc@110 1216 exp = fn e => fn s => S.Continue (exp (e, s)),
adamc@110 1217 decl = fn d => fn s => S.Continue (decl (d, s))} d s of
adamc@110 1218 S.Continue v => v
adamc@110 1219 | S.Return _ => raise Fail "CoreUtil.File.foldMap: Impossible"
adamc@110 1220
adamc@179 1221 val maxName = foldl (fn ((d, _) : decl, count) =>
adamc@179 1222 case d of
adamc@179 1223 DCon (_, n, _, _) => Int.max (n, count)
adamc@807 1224 | DDatatype dts => foldl (fn ((_, n, _, ns), count) =>
adamc@807 1225 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@807 1226 (Int.max (n, count)) ns) count dts
adamc@179 1227 | DVal (_, n, _, _, _) => Int.max (n, count)
adamc@179 1228 | DValRec vis => foldl (fn ((_, n, _, _, _), count) => Int.max (n, count)) count vis
adamc@247 1229 | DExport _ => count
adamc@707 1230 | DTable (_, n, _, _, _, _, _, _) => Int.max (n, count)
adamc@338 1231 | DSequence (_, n, _) => Int.max (n, count)
adamc@754 1232 | DView (_, n, _, _, _) => Int.max (n, count)
adamc@461 1233 | DDatabase _ => count
adamc@718 1234 | DCookie (_, n, _, _) => Int.max (n, count)
adamc@1073 1235 | DStyle (_, n, _) => Int.max (n, count)
adamc@1199 1236 | DTask _ => count
adam@1294 1237 | DPolicy _ => count
adam@1294 1238 | DOnError _ => count) 0
adamc@179 1239
adamc@20 1240 end
adamc@20 1241
adamc@20 1242 end