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annotate src/elab_env.sml @ 467:3f1b9231a37b

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Inserted a NULL value
author Adam Chlipala <adamc@hcoop.net>
date Thu, 06 Nov 2008 15:37:38 -0500
parents d34834af4512
children 20fab0e96217
rev   line source
adamc@2 1 (* Copyright (c) 2008, Adam Chlipala
adamc@2 2 * All rights reserved.
adamc@2 3 *
adamc@2 4 * Redistribution and use in source and binary forms, with or without
adamc@2 5 * modification, are permitted provided that the following conditions are met:
adamc@2 6 *
adamc@2 7 * - Redistributions of source code must retain the above copyright notice,
adamc@2 8 * this list of conditions and the following disclaimer.
adamc@2 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@2 10 * this list of conditions and the following disclaimer in the documentation
adamc@2 11 * and/or other materials provided with the distribution.
adamc@2 12 * - The names of contributors may not be used to endorse or promote products
adamc@2 13 * derived from this software without specific prior written permission.
adamc@2 14 *
adamc@2 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@2 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@2 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@2 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@2 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@2 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@2 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@2 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@2 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@2 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@2 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@2 26 *)
adamc@2 27
adamc@2 28 structure ElabEnv :> ELAB_ENV = struct
adamc@2 29
adamc@2 30 open Elab
adamc@2 31
adamc@13 32 structure U = ElabUtil
adamc@13 33
adamc@2 34 structure IM = IntBinaryMap
adamc@2 35 structure SM = BinaryMapFn(struct
adamc@2 36 type ord_key = string
adamc@2 37 val compare = String.compare
adamc@2 38 end)
adamc@2 39
adamc@2 40 exception UnboundRel of int
adamc@2 41 exception UnboundNamed of int
adamc@2 42
adamc@13 43
adamc@13 44 (* AST utility functions *)
adamc@13 45
adamc@13 46 exception SynUnif
adamc@13 47
adamc@13 48 val liftConInCon =
adamc@13 49 U.Con.mapB {kind = fn k => k,
adamc@13 50 con = fn bound => fn c =>
adamc@13 51 case c of
adamc@16 52 CRel xn =>
adamc@13 53 if xn < bound then
adamc@13 54 c
adamc@13 55 else
adamc@16 56 CRel (xn + 1)
adamc@17 57 (*| CUnif _ => raise SynUnif*)
adamc@13 58 | _ => c,
adamc@13 59 bind = fn (bound, U.Con.Rel _) => bound + 1
adamc@13 60 | (bound, _) => bound}
adamc@13 61
adamc@13 62 val lift = liftConInCon 0
adamc@13 63
adamc@448 64 val liftConInExp =
adamc@448 65 U.Exp.mapB {kind = fn k => k,
adamc@448 66 con = fn bound => fn c =>
adamc@448 67 case c of
adamc@448 68 CRel xn =>
adamc@448 69 if xn < bound then
adamc@448 70 c
adamc@448 71 else
adamc@448 72 CRel (xn + 1)
adamc@448 73 | _ => c,
adamc@448 74 exp = fn _ => fn e => e,
adamc@448 75 bind = fn (bound, U.Exp.RelC _) => bound + 1
adamc@448 76 | (bound, _) => bound}
adamc@448 77
adamc@211 78 val liftExpInExp =
adamc@211 79 U.Exp.mapB {kind = fn k => k,
adamc@211 80 con = fn _ => fn c => c,
adamc@211 81 exp = fn bound => fn e =>
adamc@211 82 case e of
adamc@211 83 ERel xn =>
adamc@211 84 if xn < bound then
adamc@211 85 e
adamc@211 86 else
adamc@211 87 ERel (xn + 1)
adamc@211 88 | _ => e,
adamc@211 89 bind = fn (bound, U.Exp.RelE _) => bound + 1
adamc@211 90 | (bound, _) => bound}
adamc@211 91
adamc@211 92
adamc@211 93 val liftExp = liftExpInExp 0
adamc@13 94
adamc@448 95 val subExpInExp =
adamc@448 96 U.Exp.mapB {kind = fn k => k,
adamc@448 97 con = fn _ => fn c => c,
adamc@448 98 exp = fn (xn, rep) => fn e =>
adamc@448 99 case e of
adamc@448 100 ERel xn' =>
adamc@448 101 (case Int.compare (xn', xn) of
adamc@448 102 EQUAL => #1 rep
adamc@448 103 | GREATER=> ERel (xn' - 1)
adamc@448 104 | LESS => e)
adamc@448 105 | _ => e,
adamc@448 106 bind = fn ((xn, rep), U.Exp.RelE _) => (xn+1, liftExpInExp 0 rep)
adamc@448 107 | ((xn, rep), U.Exp.RelC _) => (xn, liftConInExp 0 rep)
adamc@448 108 | (ctx, _) => ctx}
adamc@448 109
adamc@13 110 (* Back to environments *)
adamc@13 111
adamc@9 112 datatype 'a var' =
adamc@9 113 Rel' of int * 'a
adamc@9 114 | Named' of int * 'a
adamc@2 115
adamc@9 116 datatype 'a var =
adamc@9 117 NotBound
adamc@9 118 | Rel of int * 'a
adamc@9 119 | Named of int * 'a
adamc@2 120
adamc@191 121 type datatyp = string list * (string * con option) IM.map
adamc@157 122
adamc@211 123 datatype class_name =
adamc@211 124 ClNamed of int
adamc@211 125 | ClProj of int * string list * string
adamc@211 126
adamc@216 127 fun cn2s cn =
adamc@216 128 case cn of
adamc@216 129 ClNamed n => "Named(" ^ Int.toString n ^ ")"
adamc@216 130 | ClProj (m, ms, x) => "Proj(" ^ Int.toString m ^ "," ^ String.concatWith "," ms ^ "," ^ x ^ ")"
adamc@216 131
adamc@211 132 structure CK = struct
adamc@211 133 type ord_key = class_name
adamc@211 134 open Order
adamc@211 135 fun compare x =
adamc@211 136 case x of
adamc@211 137 (ClNamed n1, ClNamed n2) => Int.compare (n1, n2)
adamc@211 138 | (ClNamed _, _) => LESS
adamc@211 139 | (_, ClNamed _) => GREATER
adamc@211 140
adamc@211 141 | (ClProj (m1, ms1, x1), ClProj (m2, ms2, x2)) =>
adamc@211 142 join (Int.compare (m1, m2),
adamc@211 143 fn () => join (joinL String.compare (ms1, ms2),
adamc@211 144 fn () => String.compare (x1, x2)))
adamc@211 145 end
adamc@211 146
adamc@211 147 structure CM = BinaryMapFn(CK)
adamc@211 148
adamc@211 149 datatype class_key =
adamc@211 150 CkNamed of int
adamc@211 151 | CkRel of int
adamc@211 152 | CkProj of int * string list * string
adamc@467 153 | CkApp of class_key * class_key
adamc@211 154
adamc@216 155 fun ck2s ck =
adamc@216 156 case ck of
adamc@216 157 CkNamed n => "Named(" ^ Int.toString n ^ ")"
adamc@216 158 | CkRel n => "Rel(" ^ Int.toString n ^ ")"
adamc@216 159 | CkProj (m, ms, x) => "Proj(" ^ Int.toString m ^ "," ^ String.concatWith "," ms ^ "," ^ x ^ ")"
adamc@467 160 | CkApp (ck1, ck2) => "App(" ^ ck2s ck1 ^ ", " ^ ck2s ck2 ^ ")"
adamc@216 161
adamc@216 162 fun cp2s (cn, ck) = "(" ^ cn2s cn ^ "," ^ ck2s ck ^ ")"
adamc@216 163
adamc@211 164 structure KK = struct
adamc@211 165 type ord_key = class_key
adamc@211 166 open Order
adamc@211 167 fun compare x =
adamc@211 168 case x of
adamc@211 169 (CkNamed n1, CkNamed n2) => Int.compare (n1, n2)
adamc@211 170 | (CkNamed _, _) => LESS
adamc@211 171 | (_, CkNamed _) => GREATER
adamc@211 172
adamc@211 173 | (CkRel n1, CkRel n2) => Int.compare (n1, n2)
adamc@211 174 | (CkRel _, _) => LESS
adamc@211 175 | (_, CkRel _) => GREATER
adamc@211 176
adamc@211 177 | (CkProj (m1, ms1, x1), CkProj (m2, ms2, x2)) =>
adamc@211 178 join (Int.compare (m1, m2),
adamc@211 179 fn () => join (joinL String.compare (ms1, ms2),
adamc@211 180 fn () => String.compare (x1, x2)))
adamc@467 181 | (CkProj _, _) => LESS
adamc@467 182 | (_, CkProj _) => GREATER
adamc@467 183
adamc@467 184 | (CkApp (f1, x1), CkApp (f2, x2)) =>
adamc@467 185 join (compare (f1, f2),
adamc@467 186 fn () => compare (x1, x2))
adamc@211 187 end
adamc@211 188
adamc@211 189 structure KM = BinaryMapFn(KK)
adamc@211 190
adamc@211 191 type class = {
adamc@211 192 ground : exp KM.map
adamc@211 193 }
adamc@211 194
adamc@211 195 val empty_class = {
adamc@211 196 ground = KM.empty
adamc@211 197 }
adamc@211 198
adamc@419 199 fun printClasses cs = (print "Classes:\n";
adamc@419 200 CM.appi (fn (cn, {ground = km}) =>
adamc@419 201 (print (cn2s cn ^ ":");
adamc@419 202 KM.appi (fn (ck, _) => print (" " ^ ck2s ck)) km;
adamc@419 203 print "\n")) cs)
adamc@216 204
adamc@2 205 type env = {
adamc@9 206 renameC : kind var' SM.map,
adamc@2 207 relC : (string * kind) list,
adamc@11 208 namedC : (string * kind * con option) IM.map,
adamc@9 209
adamc@157 210 datatypes : datatyp IM.map,
adamc@191 211 constructors : (datatype_kind * int * string list * con option * int) SM.map,
adamc@157 212
adamc@211 213 classes : class CM.map,
adamc@211 214
adamc@9 215 renameE : con var' SM.map,
adamc@9 216 relE : (string * con) list,
adamc@31 217 namedE : (string * con) IM.map,
adamc@31 218
adamc@31 219 renameSgn : (int * sgn) SM.map,
adamc@31 220 sgn : (string * sgn) IM.map,
adamc@31 221
adamc@31 222 renameStr : (int * sgn) SM.map,
adamc@31 223 str : (string * sgn) IM.map
adamc@2 224 }
adamc@2 225
adamc@2 226 val namedCounter = ref 0
adamc@2 227
adamc@109 228 fun newNamed () =
adamc@109 229 let
adamc@109 230 val r = !namedCounter
adamc@109 231 in
adamc@109 232 namedCounter := r + 1;
adamc@109 233 r
adamc@109 234 end
adamc@109 235
adamc@2 236 val empty = {
adamc@2 237 renameC = SM.empty,
adamc@2 238 relC = [],
adamc@9 239 namedC = IM.empty,
adamc@9 240
adamc@157 241 datatypes = IM.empty,
adamc@171 242 constructors = SM.empty,
adamc@157 243
adamc@211 244 classes = CM.empty,
adamc@211 245
adamc@9 246 renameE = SM.empty,
adamc@9 247 relE = [],
adamc@31 248 namedE = IM.empty,
adamc@31 249
adamc@31 250 renameSgn = SM.empty,
adamc@31 251 sgn = IM.empty,
adamc@31 252
adamc@31 253 renameStr = SM.empty,
adamc@31 254 str = IM.empty
adamc@2 255 }
adamc@2 256
adamc@211 257 fun liftClassKey ck =
adamc@211 258 case ck of
adamc@211 259 CkNamed _ => ck
adamc@211 260 | CkRel n => CkRel (n + 1)
adamc@211 261 | CkProj _ => ck
adamc@467 262 | CkApp (ck1, ck2) => CkApp (liftClassKey ck1, liftClassKey ck2)
adamc@211 263
adamc@2 264 fun pushCRel (env : env) x k =
adamc@2 265 let
adamc@9 266 val renameC = SM.map (fn Rel' (n, k) => Rel' (n+1, k)
adamc@2 267 | x => x) (#renameC env)
adamc@2 268 in
adamc@9 269 {renameC = SM.insert (renameC, x, Rel' (0, k)),
adamc@2 270 relC = (x, k) :: #relC env,
adamc@13 271 namedC = IM.map (fn (x, k, co) => (x, k, Option.map lift co)) (#namedC env),
adamc@9 272
adamc@157 273 datatypes = #datatypes env,
adamc@171 274 constructors = #constructors env,
adamc@157 275
adamc@211 276 classes = CM.map (fn class => {
adamc@211 277 ground = KM.foldli (fn (ck, e, km) =>
adamc@211 278 KM.insert (km, liftClassKey ck, e))
adamc@211 279 KM.empty (#ground class)
adamc@211 280 })
adamc@211 281 (#classes env),
adamc@211 282
adamc@328 283 renameE = SM.map (fn Rel' (n, c) => Rel' (n, lift c)
adamc@328 284 | Named' (n, c) => Named' (n, lift c)) (#renameE env),
adamc@13 285 relE = map (fn (x, c) => (x, lift c)) (#relE env),
adamc@31 286 namedE = IM.map (fn (x, c) => (x, lift c)) (#namedE env),
adamc@31 287
adamc@31 288 renameSgn = #renameSgn env,
adamc@31 289 sgn = #sgn env,
adamc@31 290
adamc@31 291 renameStr = #renameStr env,
adamc@31 292 str = #str env
adamc@31 293 }
adamc@2 294 end
adamc@2 295
adamc@2 296 fun lookupCRel (env : env) n =
adamc@2 297 (List.nth (#relC env, n))
adamc@2 298 handle Subscript => raise UnboundRel n
adamc@2 299
adamc@11 300 fun pushCNamedAs (env : env) x n k co =
adamc@9 301 {renameC = SM.insert (#renameC env, x, Named' (n, k)),
adamc@5 302 relC = #relC env,
adamc@11 303 namedC = IM.insert (#namedC env, n, (x, k, co)),
adamc@9 304
adamc@157 305 datatypes = #datatypes env,
adamc@171 306 constructors = #constructors env,
adamc@157 307
adamc@211 308 classes = #classes env,
adamc@211 309
adamc@9 310 renameE = #renameE env,
adamc@9 311 relE = #relE env,
adamc@31 312 namedE = #namedE env,
adamc@31 313
adamc@31 314 renameSgn = #renameSgn env,
adamc@31 315 sgn = #sgn env,
adamc@31 316
adamc@31 317 renameStr = #renameStr env,
adamc@31 318 str = #str env}
adamc@5 319
adamc@11 320 fun pushCNamed env x k co =
adamc@2 321 let
adamc@2 322 val n = !namedCounter
adamc@2 323 in
adamc@2 324 namedCounter := n + 1;
adamc@11 325 (pushCNamedAs env x n k co, n)
adamc@2 326 end
adamc@2 327
adamc@2 328 fun lookupCNamed (env : env) n =
adamc@2 329 case IM.find (#namedC env, n) of
adamc@2 330 NONE => raise UnboundNamed n
adamc@2 331 | SOME x => x
adamc@2 332
adamc@2 333 fun lookupC (env : env) x =
adamc@2 334 case SM.find (#renameC env, x) of
adamc@9 335 NONE => NotBound
adamc@9 336 | SOME (Rel' x) => Rel x
adamc@9 337 | SOME (Named' x) => Named x
adamc@9 338
adamc@191 339 fun pushDatatype (env : env) n xs xncs =
adamc@188 340 let
adamc@188 341 val dk = U.classifyDatatype xncs
adamc@188 342 in
adamc@188 343 {renameC = #renameC env,
adamc@188 344 relC = #relC env,
adamc@188 345 namedC = #namedC env,
adamc@157 346
adamc@188 347 datatypes = IM.insert (#datatypes env, n,
adamc@191 348 (xs, foldl (fn ((x, n, to), cons) =>
adamc@191 349 IM.insert (cons, n, (x, to))) IM.empty xncs)),
adamc@188 350 constructors = foldl (fn ((x, n', to), cmap) =>
adamc@191 351 SM.insert (cmap, x, (dk, n', xs, to, n)))
adamc@188 352 (#constructors env) xncs,
adamc@157 353
adamc@211 354 classes = #classes env,
adamc@211 355
adamc@188 356 renameE = #renameE env,
adamc@188 357 relE = #relE env,
adamc@188 358 namedE = #namedE env,
adamc@157 359
adamc@188 360 renameSgn = #renameSgn env,
adamc@188 361 sgn = #sgn env,
adamc@157 362
adamc@188 363 renameStr = #renameStr env,
adamc@188 364 str = #str env}
adamc@188 365 end
adamc@157 366
adamc@157 367 fun lookupDatatype (env : env) n =
adamc@157 368 case IM.find (#datatypes env, n) of
adamc@157 369 NONE => raise UnboundNamed n
adamc@157 370 | SOME x => x
adamc@157 371
adamc@191 372 fun lookupDatatypeConstructor (_, dt) n =
adamc@157 373 case IM.find (dt, n) of
adamc@157 374 NONE => raise UnboundNamed n
adamc@157 375 | SOME x => x
adamc@157 376
adamc@171 377 fun lookupConstructor (env : env) s = SM.find (#constructors env, s)
adamc@171 378
adamc@191 379 fun datatypeArgs (xs, _) = xs
adamc@191 380 fun constructors (_, dt) = IM.foldri (fn (n, (x, to), ls) => (x, n, to) :: ls) [] dt
adamc@157 381
adamc@211 382 fun pushClass (env : env) n =
adamc@211 383 {renameC = #renameC env,
adamc@211 384 relC = #relC env,
adamc@211 385 namedC = #namedC env,
adamc@211 386
adamc@211 387 datatypes = #datatypes env,
adamc@211 388 constructors = #constructors env,
adamc@211 389
adamc@211 390 classes = CM.insert (#classes env, ClNamed n, {ground = KM.empty}),
adamc@211 391
adamc@211 392 renameE = #renameE env,
adamc@211 393 relE = #relE env,
adamc@211 394 namedE = #namedE env,
adamc@211 395
adamc@211 396 renameSgn = #renameSgn env,
adamc@211 397 sgn = #sgn env,
adamc@211 398
adamc@211 399 renameStr = #renameStr env,
adamc@403 400 str = #str env}
adamc@211 401
adamc@211 402 fun class_name_in (c, _) =
adamc@211 403 case c of
adamc@211 404 CNamed n => SOME (ClNamed n)
adamc@211 405 | CModProj x => SOME (ClProj x)
adamc@228 406 | CUnif (_, _, _, ref (SOME c)) => class_name_in c
adamc@211 407 | _ => NONE
adamc@211 408
adamc@403 409 fun isClass (env : env) c =
adamc@403 410 let
adamc@403 411 fun find NONE = false
adamc@403 412 | find (SOME c) = Option.isSome (CM.find (#classes env, c))
adamc@403 413 in
adamc@403 414 find (class_name_in c)
adamc@403 415 end
adamc@403 416
adamc@211 417 fun class_key_in (c, _) =
adamc@211 418 case c of
adamc@211 419 CRel n => SOME (CkRel n)
adamc@211 420 | CNamed n => SOME (CkNamed n)
adamc@211 421 | CModProj x => SOME (CkProj x)
adamc@228 422 | CUnif (_, _, _, ref (SOME c)) => class_key_in c
adamc@467 423 | CApp (c1, c2) =>
adamc@467 424 (case (class_key_in c1, class_key_in c2) of
adamc@467 425 (SOME k1, SOME k2) => SOME (CkApp (k1, k2))
adamc@467 426 | _ => NONE)
adamc@211 427 | _ => NONE
adamc@211 428
adamc@211 429 fun class_pair_in (c, _) =
adamc@211 430 case c of
adamc@211 431 CApp (f, x) =>
adamc@211 432 (case (class_name_in f, class_key_in x) of
adamc@211 433 (SOME f, SOME x) => SOME (f, x)
adamc@211 434 | _ => NONE)
adamc@452 435 | CUnif (_, _, _, ref (SOME c)) => class_pair_in c
adamc@211 436 | _ => NONE
adamc@211 437
adamc@211 438 fun resolveClass (env : env) c =
adamc@211 439 case class_pair_in c of
adamc@211 440 SOME (f, x) =>
adamc@211 441 (case CM.find (#classes env, f) of
adamc@211 442 NONE => NONE
adamc@211 443 | SOME class =>
adamc@211 444 case KM.find (#ground class, x) of
adamc@211 445 NONE => NONE
adamc@211 446 | SOME e => SOME e)
adamc@211 447 | _ => NONE
adamc@211 448
adamc@9 449 fun pushERel (env : env) x t =
adamc@9 450 let
adamc@9 451 val renameE = SM.map (fn Rel' (n, t) => Rel' (n+1, t)
adamc@9 452 | x => x) (#renameE env)
adamc@211 453
adamc@211 454 val classes = CM.map (fn class => {
adamc@211 455 ground = KM.map liftExp (#ground class)
adamc@211 456 }) (#classes env)
adamc@211 457 val classes = case class_pair_in t of
adamc@211 458 NONE => classes
adamc@211 459 | SOME (f, x) =>
adamc@403 460 case CM.find (classes, f) of
adamc@403 461 NONE => classes
adamc@403 462 | SOME class =>
adamc@403 463 let
adamc@403 464 val class = {
adamc@403 465 ground = KM.insert (#ground class, x, (ERel 0, #2 t))
adamc@403 466 }
adamc@403 467 in
adamc@403 468 CM.insert (classes, f, class)
adamc@403 469 end
adamc@9 470 in
adamc@9 471 {renameC = #renameC env,
adamc@9 472 relC = #relC env,
adamc@9 473 namedC = #namedC env,
adamc@9 474
adamc@157 475 datatypes = #datatypes env,
adamc@171 476 constructors = #constructors env,
adamc@157 477
adamc@211 478 classes = classes,
adamc@211 479
adamc@9 480 renameE = SM.insert (renameE, x, Rel' (0, t)),
adamc@9 481 relE = (x, t) :: #relE env,
adamc@31 482 namedE = #namedE env,
adamc@31 483
adamc@31 484 renameSgn = #renameSgn env,
adamc@31 485 sgn = #sgn env,
adamc@31 486
adamc@31 487 renameStr = #renameStr env,
adamc@31 488 str = #str env}
adamc@9 489 end
adamc@9 490
adamc@9 491 fun lookupERel (env : env) n =
adamc@9 492 (List.nth (#relE env, n))
adamc@9 493 handle Subscript => raise UnboundRel n
adamc@9 494
adamc@9 495 fun pushENamedAs (env : env) x n t =
adamc@211 496 let
adamc@211 497 val classes = #classes env
adamc@211 498 val classes = case class_pair_in t of
adamc@211 499 NONE => classes
adamc@211 500 | SOME (f, x) =>
adamc@403 501 case CM.find (classes, f) of
adamc@403 502 NONE => classes
adamc@403 503 | SOME class =>
adamc@403 504 let
adamc@403 505 val class = {
adamc@403 506 ground = KM.insert (#ground class, x, (ENamed n, #2 t))
adamc@403 507 }
adamc@403 508 in
adamc@403 509 CM.insert (classes, f, class)
adamc@403 510 end
adamc@211 511 in
adamc@211 512 {renameC = #renameC env,
adamc@211 513 relC = #relC env,
adamc@211 514 namedC = #namedC env,
adamc@9 515
adamc@211 516 datatypes = #datatypes env,
adamc@211 517 constructors = #constructors env,
adamc@157 518
adamc@211 519 classes = classes,
adamc@31 520
adamc@211 521 renameE = SM.insert (#renameE env, x, Named' (n, t)),
adamc@211 522 relE = #relE env,
adamc@211 523 namedE = IM.insert (#namedE env, n, (x, t)),
adamc@211 524
adamc@211 525 renameSgn = #renameSgn env,
adamc@211 526 sgn = #sgn env,
adamc@211 527
adamc@211 528 renameStr = #renameStr env,
adamc@211 529 str = #str env}
adamc@211 530 end
adamc@9 531
adamc@9 532 fun pushENamed env x t =
adamc@9 533 let
adamc@9 534 val n = !namedCounter
adamc@9 535 in
adamc@9 536 namedCounter := n + 1;
adamc@9 537 (pushENamedAs env x n t, n)
adamc@9 538 end
adamc@9 539
adamc@9 540 fun lookupENamed (env : env) n =
adamc@9 541 case IM.find (#namedE env, n) of
adamc@9 542 NONE => raise UnboundNamed n
adamc@9 543 | SOME x => x
adamc@9 544
adamc@9 545 fun lookupE (env : env) x =
adamc@9 546 case SM.find (#renameE env, x) of
adamc@9 547 NONE => NotBound
adamc@9 548 | SOME (Rel' x) => Rel x
adamc@9 549 | SOME (Named' x) => Named x
adamc@2 550
adamc@31 551 fun pushSgnNamedAs (env : env) x n sgis =
adamc@31 552 {renameC = #renameC env,
adamc@31 553 relC = #relC env,
adamc@31 554 namedC = #namedC env,
adamc@31 555
adamc@157 556 datatypes = #datatypes env,
adamc@171 557 constructors = #constructors env,
adamc@157 558
adamc@211 559 classes = #classes env,
adamc@211 560
adamc@31 561 renameE = #renameE env,
adamc@31 562 relE = #relE env,
adamc@31 563 namedE = #namedE env,
adamc@31 564
adamc@31 565 renameSgn = SM.insert (#renameSgn env, x, (n, sgis)),
adamc@31 566 sgn = IM.insert (#sgn env, n, (x, sgis)),
adamc@31 567
adamc@31 568 renameStr = #renameStr env,
adamc@31 569 str = #str env}
adamc@31 570
adamc@31 571 fun pushSgnNamed env x sgis =
adamc@31 572 let
adamc@31 573 val n = !namedCounter
adamc@31 574 in
adamc@31 575 namedCounter := n + 1;
adamc@31 576 (pushSgnNamedAs env x n sgis, n)
adamc@31 577 end
adamc@31 578
adamc@31 579 fun lookupSgnNamed (env : env) n =
adamc@31 580 case IM.find (#sgn env, n) of
adamc@31 581 NONE => raise UnboundNamed n
adamc@31 582 | SOME x => x
adamc@31 583
adamc@31 584 fun lookupSgn (env : env) x = SM.find (#renameSgn env, x)
adamc@31 585
adamc@31 586 fun lookupStrNamed (env : env) n =
adamc@31 587 case IM.find (#str env, n) of
adamc@31 588 NONE => raise UnboundNamed n
adamc@31 589 | SOME x => x
adamc@31 590
adamc@31 591 fun lookupStr (env : env) x = SM.find (#renameStr env, x)
adamc@31 592
adamc@203 593
adamc@216 594 fun sgiSeek (sgi, (sgns, strs, cons)) =
adamc@216 595 case sgi of
adamc@216 596 SgiConAbs (x, n, _) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 597 | SgiCon (x, n, _, _) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 598 | SgiDatatype (x, n, _, _) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 599 | SgiDatatypeImp (x, n, _, _, _, _, _) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 600 | SgiVal _ => (sgns, strs, cons)
adamc@216 601 | SgiSgn (x, n, _) => (IM.insert (sgns, n, x), strs, cons)
adamc@216 602 | SgiStr (x, n, _) => (sgns, IM.insert (strs, n, x), cons)
adamc@216 603 | SgiConstraint _ => (sgns, strs, cons)
adamc@216 604 | SgiClassAbs (x, n) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 605 | SgiClass (x, n, _) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 606
adamc@34 607 fun sgnSeek f sgis =
adamc@34 608 let
adamc@59 609 fun seek (sgis, sgns, strs, cons) =
adamc@34 610 case sgis of
adamc@34 611 [] => NONE
adamc@34 612 | (sgi, _) :: sgis =>
adamc@34 613 case f sgi of
adamc@158 614 SOME v =>
adamc@158 615 let
adamc@158 616 val cons =
adamc@158 617 case sgi of
adamc@191 618 SgiDatatype (x, n, _, _) => IM.insert (cons, n, x)
adamc@191 619 | SgiDatatypeImp (x, n, _, _, _, _, _) => IM.insert (cons, n, x)
adamc@158 620 | _ => cons
adamc@158 621 in
adamc@158 622 SOME (v, (sgns, strs, cons))
adamc@158 623 end
adamc@88 624 | NONE =>
adamc@216 625 let
adamc@216 626 val (sgns, strs, cons) = sgiSeek (sgi, (sgns, strs, cons))
adamc@216 627 in
adamc@216 628 seek (sgis, sgns, strs, cons)
adamc@216 629 end
adamc@34 630 in
adamc@59 631 seek (sgis, IM.empty, IM.empty, IM.empty)
adamc@34 632 end
adamc@34 633
adamc@34 634 fun id x = x
adamc@34 635
adamc@34 636 fun unravelStr (str, _) =
adamc@34 637 case str of
adamc@34 638 StrVar x => (x, [])
adamc@34 639 | StrProj (str, m) =>
adamc@34 640 let
adamc@34 641 val (x, ms) = unravelStr str
adamc@34 642 in
adamc@34 643 (x, ms @ [m])
adamc@34 644 end
adamc@34 645 | _ => raise Fail "unravelStr"
adamc@34 646
adamc@59 647 fun sgnS_con (str, (sgns, strs, cons)) c =
adamc@34 648 case c of
adamc@34 649 CModProj (m1, ms, x) =>
adamc@34 650 (case IM.find (strs, m1) of
adamc@34 651 NONE => c
adamc@34 652 | SOME m1x =>
adamc@34 653 let
adamc@34 654 val (m1, ms') = unravelStr str
adamc@34 655 in
adamc@34 656 CModProj (m1, ms' @ m1x :: ms, x)
adamc@34 657 end)
adamc@34 658 | CNamed n =>
adamc@34 659 (case IM.find (cons, n) of
adamc@34 660 NONE => c
adamc@34 661 | SOME nx =>
adamc@34 662 let
adamc@34 663 val (m1, ms) = unravelStr str
adamc@34 664 in
adamc@34 665 CModProj (m1, ms, nx)
adamc@34 666 end)
adamc@34 667 | _ => c
adamc@34 668
adamc@467 669 fun sgnS_con' (arg as (m1, ms', (sgns, strs, cons))) c =
adamc@216 670 case c of
adamc@216 671 CModProj (m1, ms, x) =>
adamc@216 672 (case IM.find (strs, m1) of
adamc@216 673 NONE => c
adamc@216 674 | SOME m1x => CModProj (m1, ms' @ m1x :: ms, x))
adamc@216 675 | CNamed n =>
adamc@216 676 (case IM.find (cons, n) of
adamc@216 677 NONE => c
adamc@216 678 | SOME nx => CModProj (m1, ms', nx))
adamc@467 679 | CApp (c1, c2) => CApp ((sgnS_con' arg (#1 c1), #2 c1),
adamc@467 680 (sgnS_con' arg (#1 c2), #2 c2))
adamc@216 681 | _ => c
adamc@216 682
adamc@59 683 fun sgnS_sgn (str, (sgns, strs, cons)) sgn =
adamc@59 684 case sgn of
adamc@59 685 SgnProj (m1, ms, x) =>
adamc@59 686 (case IM.find (strs, m1) of
adamc@59 687 NONE => sgn
adamc@59 688 | SOME m1x =>
adamc@59 689 let
adamc@59 690 val (m1, ms') = unravelStr str
adamc@59 691 in
adamc@59 692 SgnProj (m1, ms' @ m1x :: ms, x)
adamc@59 693 end)
adamc@59 694 | SgnVar n =>
adamc@59 695 (case IM.find (sgns, n) of
adamc@59 696 NONE => sgn
adamc@59 697 | SOME nx =>
adamc@59 698 let
adamc@59 699 val (m1, ms) = unravelStr str
adamc@59 700 in
adamc@59 701 SgnProj (m1, ms, nx)
adamc@59 702 end)
adamc@59 703 | _ => sgn
adamc@59 704
adamc@59 705 fun sgnSubSgn x =
adamc@34 706 ElabUtil.Sgn.map {kind = id,
adamc@59 707 con = sgnS_con x,
adamc@34 708 sgn_item = id,
adamc@59 709 sgn = sgnS_sgn x}
adamc@34 710
adamc@211 711
adamc@211 712
adamc@211 713 and projectSgn env {sgn, str, field} =
adamc@211 714 case #1 (hnormSgn env sgn) of
adamc@211 715 SgnConst sgis =>
adamc@211 716 (case sgnSeek (fn SgiSgn (x, _, sgn) => if x = field then SOME sgn else NONE | _ => NONE) sgis of
adamc@211 717 NONE => NONE
adamc@211 718 | SOME (sgn, subs) => SOME (sgnSubSgn (str, subs) sgn))
adamc@211 719 | SgnError => SOME (SgnError, ErrorMsg.dummySpan)
adamc@211 720 | _ => NONE
adamc@211 721
adamc@211 722 and hnormSgn env (all as (sgn, loc)) =
adamc@34 723 case sgn of
adamc@42 724 SgnError => all
adamc@42 725 | SgnVar n => hnormSgn env (#2 (lookupSgnNamed env n))
adamc@42 726 | SgnConst _ => all
adamc@42 727 | SgnFun _ => all
adamc@59 728 | SgnProj (m, ms, x) =>
adamc@59 729 let
adamc@59 730 val (_, sgn) = lookupStrNamed env m
adamc@59 731 in
adamc@59 732 case projectSgn env {str = foldl (fn (m, str) => (StrProj (str, m), loc)) (StrVar m, loc) ms,
adamc@59 733 sgn = sgn,
adamc@59 734 field = x} of
adamc@59 735 NONE => raise Fail "ElabEnv.hnormSgn: projectSgn failed"
adamc@59 736 | SOME sgn => sgn
adamc@59 737 end
adamc@42 738 | SgnWhere (sgn, x, c) =>
adamc@42 739 case #1 (hnormSgn env sgn) of
adamc@42 740 SgnError => (SgnError, loc)
adamc@42 741 | SgnConst sgis =>
adamc@42 742 let
adamc@42 743 fun traverse (pre, post) =
adamc@42 744 case post of
adamc@42 745 [] => raise Fail "ElabEnv.hnormSgn: Can't reduce 'where' [1]"
adamc@42 746 | (sgi as (SgiConAbs (x', n, k), loc)) :: rest =>
adamc@42 747 if x = x' then
adamc@42 748 List.revAppend (pre, (SgiCon (x', n, k, c), loc) :: rest)
adamc@42 749 else
adamc@42 750 traverse (sgi :: pre, rest)
adamc@42 751 | sgi :: rest => traverse (sgi :: pre, rest)
adamc@42 752
adamc@42 753 val sgis = traverse ([], sgis)
adamc@42 754 in
adamc@42 755 (SgnConst sgis, loc)
adamc@42 756 end
adamc@42 757 | _ => raise Fail "ElabEnv.hnormSgn: Can't reduce 'where' [2]"
adamc@42 758
adamc@211 759 fun enrichClasses env classes (m1, ms) sgn =
adamc@59 760 case #1 (hnormSgn env sgn) of
adamc@59 761 SgnConst sgis =>
adamc@211 762 let
adamc@218 763 val (classes, _, _, _) =
adamc@218 764 foldl (fn (sgi, (classes, newClasses, fmap, env)) =>
adamc@211 765 let
adamc@211 766 fun found (x, n) =
adamc@211 767 (CM.insert (classes,
adamc@211 768 ClProj (m1, ms, x),
adamc@211 769 empty_class),
adamc@216 770 IM.insert (newClasses, n, x),
adamc@218 771 sgiSeek (#1 sgi, fmap),
adamc@218 772 env)
adamc@216 773
adamc@218 774 fun default () = (classes, newClasses, sgiSeek (#1 sgi, fmap), env)
adamc@211 775 in
adamc@211 776 case #1 sgi of
adamc@217 777 SgiStr (x, _, sgn) =>
adamc@217 778 (enrichClasses env classes (m1, ms @ [x]) sgn,
adamc@217 779 newClasses,
adamc@218 780 sgiSeek (#1 sgi, fmap),
adamc@218 781 env)
adamc@218 782 | SgiSgn (x, n, sgn) =>
adamc@218 783 (classes,
adamc@218 784 newClasses,
adamc@218 785 fmap,
adamc@218 786 pushSgnNamedAs env x n sgn)
adamc@218 787
adamc@217 788 | SgiClassAbs xn => found xn
adamc@211 789 | SgiClass (x, n, _) => found (x, n)
adamc@419 790 | SgiVal (x, n, (CApp (f, a), _)) =>
adamc@419 791 let
adamc@419 792 fun unravel c =
adamc@419 793 case #1 c of
adamc@419 794 CUnif (_, _, _, ref (SOME c)) => unravel c
adamc@419 795 | CNamed n =>
adamc@419 796 ((case lookupCNamed env n of
adamc@419 797 (_, _, SOME c) => unravel c
adamc@419 798 | _ => c)
adamc@419 799 handle UnboundNamed _ => c)
adamc@419 800 | _ => c
adamc@216 801
adamc@419 802 val nc =
adamc@419 803 case f of
adamc@419 804 (CNamed f, _) => IM.find (newClasses, f)
adamc@419 805 | _ => NONE
adamc@419 806 in
adamc@419 807 case nc of
adamc@419 808 NONE =>
adamc@419 809 (case (class_name_in (unravel f),
adamc@419 810 class_key_in (sgnS_con' (m1, ms, fmap) (#1 a), #2 a)) of
adamc@419 811 (SOME cn, SOME ck) =>
adamc@419 812 let
adamc@419 813 val classes =
adamc@419 814 case CM.find (classes, cn) of
adamc@419 815 NONE => classes
adamc@419 816 | SOME class =>
adamc@419 817 let
adamc@419 818 val class = {
adamc@419 819 ground = KM.insert (#ground class, ck,
adamc@419 820 (EModProj (m1, ms, x), #2 sgn))
adamc@419 821 }
adamc@419 822 in
adamc@419 823 CM.insert (classes, cn, class)
adamc@419 824 end
adamc@419 825 in
adamc@419 826 (classes,
adamc@419 827 newClasses,
adamc@419 828 fmap,
adamc@419 829 env)
adamc@419 830 end
adamc@419 831 | _ => default ())
adamc@419 832 | SOME fx =>
adamc@419 833 case class_key_in (sgnS_con' (m1, ms, fmap) (#1 a), #2 a) of
adamc@419 834 NONE => default ()
adamc@419 835 | SOME ck =>
adamc@419 836 let
adamc@419 837 val cn = ClProj (m1, ms, fx)
adamc@419 838
adamc@419 839 val classes =
adamc@419 840 case CM.find (classes, cn) of
adamc@419 841 NONE => classes
adamc@419 842 | SOME class =>
adamc@419 843 let
adamc@419 844 val class = {
adamc@419 845 ground = KM.insert (#ground class, ck,
adamc@419 846 (EModProj (m1, ms, x), #2 sgn))
adamc@419 847 }
adamc@419 848 in
adamc@419 849 CM.insert (classes, cn, class)
adamc@419 850 end
adamc@419 851 in
adamc@419 852 (classes,
adamc@419 853 newClasses,
adamc@419 854 fmap,
adamc@419 855 env)
adamc@419 856 end
adamc@419 857 end
adamc@217 858 | SgiVal _ => default ()
adamc@216 859 | _ => default ()
adamc@211 860 end)
adamc@218 861 (classes, IM.empty, (IM.empty, IM.empty, IM.empty), env) sgis
adamc@211 862 in
adamc@211 863 classes
adamc@211 864 end
adamc@211 865 | _ => classes
adamc@211 866
adamc@211 867 fun pushStrNamedAs (env : env) x n sgn =
adamc@211 868 {renameC = #renameC env,
adamc@211 869 relC = #relC env,
adamc@211 870 namedC = #namedC env,
adamc@211 871
adamc@211 872 datatypes = #datatypes env,
adamc@211 873 constructors = #constructors env,
adamc@211 874
adamc@211 875 classes = enrichClasses env (#classes env) (n, []) sgn,
adamc@211 876
adamc@211 877 renameE = #renameE env,
adamc@211 878 relE = #relE env,
adamc@211 879 namedE = #namedE env,
adamc@211 880
adamc@211 881 renameSgn = #renameSgn env,
adamc@211 882 sgn = #sgn env,
adamc@211 883
adamc@211 884 renameStr = SM.insert (#renameStr env, x, (n, sgn)),
adamc@211 885 str = IM.insert (#str env, n, (x, sgn))}
adamc@211 886
adamc@211 887 fun pushStrNamed env x sgn =
adamc@211 888 let
adamc@211 889 val n = !namedCounter
adamc@211 890 in
adamc@211 891 namedCounter := n + 1;
adamc@211 892 (pushStrNamedAs env x n sgn, n)
adamc@211 893 end
adamc@211 894
adamc@211 895 fun sgiBinds env (sgi, loc) =
adamc@211 896 case sgi of
adamc@211 897 SgiConAbs (x, n, k) => pushCNamedAs env x n k NONE
adamc@211 898 | SgiCon (x, n, k, c) => pushCNamedAs env x n k (SOME c)
adamc@211 899 | SgiDatatype (x, n, xs, xncs) =>
adamc@211 900 let
adamc@341 901 val k = (KType, loc)
adamc@341 902 val k' = foldr (fn (_, k') => (KArrow (k, k'), loc)) k xs
adamc@341 903
adamc@341 904 val env = pushCNamedAs env x n k' NONE
adamc@211 905 in
adamc@211 906 foldl (fn ((x', n', to), env) =>
adamc@211 907 let
adamc@211 908 val t =
adamc@211 909 case to of
adamc@211 910 NONE => (CNamed n, loc)
adamc@211 911 | SOME t => (TFun (t, (CNamed n, loc)), loc)
adamc@211 912
adamc@211 913 val k = (KType, loc)
adamc@211 914 val t = foldr (fn (x, t) => (TCFun (Explicit, x, k, t), loc)) t xs
adamc@211 915 in
adamc@211 916 pushENamedAs env x' n' t
adamc@211 917 end)
adamc@211 918 env xncs
adamc@211 919 end
adamc@211 920 | SgiDatatypeImp (x, n, m1, ms, x', xs, xncs) =>
adamc@211 921 let
adamc@341 922 val k = (KType, loc)
adamc@341 923 val k' = foldr (fn (_, k') => (KArrow (k, k'), loc)) k xs
adamc@341 924
adamc@341 925 val env = pushCNamedAs env x n k' (SOME (CModProj (m1, ms, x'), loc))
adamc@211 926 in
adamc@211 927 foldl (fn ((x', n', to), env) =>
adamc@211 928 let
adamc@211 929 val t =
adamc@211 930 case to of
adamc@211 931 NONE => (CNamed n, loc)
adamc@211 932 | SOME t => (TFun (t, (CNamed n, loc)), loc)
adamc@211 933
adamc@211 934 val k = (KType, loc)
adamc@211 935 val t = foldr (fn (x, t) => (TCFun (Explicit, x, k, t), loc)) t xs
adamc@211 936 in
adamc@211 937 pushENamedAs env x' n' t
adamc@211 938 end)
adamc@211 939 env xncs
adamc@211 940 end
adamc@211 941 | SgiVal (x, n, t) => pushENamedAs env x n t
adamc@211 942 | SgiStr (x, n, sgn) => pushStrNamedAs env x n sgn
adamc@211 943 | SgiSgn (x, n, sgn) => pushSgnNamedAs env x n sgn
adamc@211 944 | SgiConstraint _ => env
adamc@211 945
adamc@211 946 | SgiClassAbs (x, n) => pushCNamedAs env x n (KArrow ((KType, loc), (KType, loc)), loc) NONE
adamc@211 947 | SgiClass (x, n, c) => pushCNamedAs env x n (KArrow ((KType, loc), (KType, loc)), loc) (SOME c)
adamc@459 948
adamc@211 949 fun sgnSubCon x =
adamc@211 950 ElabUtil.Con.map {kind = id,
adamc@211 951 con = sgnS_con x}
adamc@59 952
adamc@59 953 fun projectStr env {sgn, str, field} =
adamc@59 954 case #1 (hnormSgn env sgn) of
adamc@59 955 SgnConst sgis =>
adamc@59 956 (case sgnSeek (fn SgiStr (x, _, sgn) => if x = field then SOME sgn else NONE | _ => NONE) sgis of
adamc@59 957 NONE => NONE
adamc@59 958 | SOME (sgn, subs) => SOME (sgnSubSgn (str, subs) sgn))
adamc@59 959 | SgnError => SOME (SgnError, ErrorMsg.dummySpan)
adamc@59 960 | _ => NONE
adamc@59 961
adamc@158 962 fun chaseMpath env (n, ms) =
adamc@158 963 let
adamc@158 964 val (_, sgn) = lookupStrNamed env n
adamc@158 965 in
adamc@158 966 foldl (fn (m, (str, sgn)) =>
adamc@158 967 case projectStr env {sgn = sgn, str = str, field = m} of
adamc@158 968 NONE => raise Fail "kindof: Unknown substructure"
adamc@158 969 | SOME sgn => ((StrProj (str, m), #2 sgn), sgn))
adamc@158 970 ((StrVar n, #2 sgn), sgn) ms
adamc@158 971 end
adamc@158 972
adamc@42 973 fun projectCon env {sgn, str, field} =
adamc@42 974 case #1 (hnormSgn env sgn) of
adamc@34 975 SgnConst sgis =>
adamc@34 976 (case sgnSeek (fn SgiConAbs (x, _, k) => if x = field then SOME (k, NONE) else NONE
adamc@34 977 | SgiCon (x, _, k, c) => if x = field then SOME (k, SOME c) else NONE
adamc@341 978 | SgiDatatype (x, _, xs, _) =>
adamc@158 979 if x = field then
adamc@341 980 let
adamc@341 981 val k = (KType, #2 sgn)
adamc@341 982 val k' = foldl (fn (_, k') => (KArrow (k, k'), #2 sgn)) k xs
adamc@341 983 in
adamc@341 984 SOME (k', NONE)
adamc@341 985 end
adamc@341 986 else
adamc@341 987 NONE
adamc@341 988 | SgiDatatypeImp (x, _, m1, ms, x', xs, _) =>
adamc@341 989 if x = field then
adamc@341 990 let
adamc@341 991 val k = (KType, #2 sgn)
adamc@341 992 val k' = foldl (fn (_, k') => (KArrow (k, k'), #2 sgn)) k xs
adamc@341 993 in
adamc@341 994 SOME (k', SOME (CModProj (m1, ms, x'), #2 sgn))
adamc@341 995 end
adamc@158 996 else
adamc@158 997 NONE
adamc@216 998 | SgiClassAbs (x, _) => if x = field then
adamc@216 999 SOME ((KArrow ((KType, #2 sgn), (KType, #2 sgn)), #2 sgn), NONE)
adamc@216 1000 else
adamc@216 1001 NONE
adamc@216 1002 | SgiClass (x, _, c) => if x = field then
adamc@216 1003 SOME ((KArrow ((KType, #2 sgn), (KType, #2 sgn)), #2 sgn), SOME c)
adamc@216 1004 else
adamc@216 1005 NONE
adamc@34 1006 | _ => NONE) sgis of
adamc@34 1007 NONE => NONE
adamc@34 1008 | SOME ((k, co), subs) => SOME (k, Option.map (sgnSubCon (str, subs)) co))
adamc@34 1009 | SgnError => SOME ((KError, ErrorMsg.dummySpan), SOME (CError, ErrorMsg.dummySpan))
adamc@42 1010 | _ => NONE
adamc@34 1011
adamc@157 1012 fun projectDatatype env {sgn, str, field} =
adamc@157 1013 case #1 (hnormSgn env sgn) of
adamc@157 1014 SgnConst sgis =>
adamc@191 1015 (case sgnSeek (fn SgiDatatype (x, _, xs, xncs) => if x = field then SOME (xs, xncs) else NONE
adamc@191 1016 | SgiDatatypeImp (x, _, _, _, _, xs, xncs) => if x = field then SOME (xs, xncs) else NONE
adamc@157 1017 | _ => NONE) sgis of
adamc@157 1018 NONE => NONE
adamc@191 1019 | SOME ((xs, xncs), subs) => SOME (xs,
adamc@191 1020 map (fn (x, n, to) => (x, n, Option.map (sgnSubCon (str, subs)) to)) xncs))
adamc@157 1021 | _ => NONE
adamc@157 1022
adamc@174 1023 fun projectConstructor env {sgn, str, field} =
adamc@174 1024 case #1 (hnormSgn env sgn) of
adamc@174 1025 SgnConst sgis =>
adamc@174 1026 let
adamc@191 1027 fun consider (n, xs, xncs) =
adamc@174 1028 ListUtil.search (fn (x, n', to) =>
adamc@174 1029 if x <> field then
adamc@174 1030 NONE
adamc@174 1031 else
adamc@191 1032 SOME (U.classifyDatatype xncs, n', xs, to, (CNamed n, #2 str))) xncs
adamc@174 1033 in
adamc@191 1034 case sgnSeek (fn SgiDatatype (_, n, xs, xncs) => consider (n, xs, xncs)
adamc@191 1035 | SgiDatatypeImp (_, n, _, _, _, xs, xncs) => consider (n, xs, xncs)
adamc@174 1036 | _ => NONE) sgis of
adamc@174 1037 NONE => NONE
adamc@191 1038 | SOME ((dk, n, xs, to, t), subs) => SOME (dk, n, xs, Option.map (sgnSubCon (str, subs)) to,
adamc@191 1039 sgnSubCon (str, subs) t)
adamc@174 1040 end
adamc@174 1041 | _ => NONE
adamc@174 1042
adamc@42 1043 fun projectVal env {sgn, str, field} =
adamc@42 1044 case #1 (hnormSgn env sgn) of
adamc@34 1045 SgnConst sgis =>
adamc@162 1046 let
adamc@191 1047 fun seek (n, xs, xncs) =
adamc@162 1048 ListUtil.search (fn (x, _, to) =>
adamc@162 1049 if x = field then
adamc@191 1050 SOME (let
adamc@467 1051 val base = (CNamed n, #2 sgn)
adamc@467 1052 val nxs = length xs
adamc@467 1053 val base = ListUtil.foldli (fn (i, _, base) =>
adamc@467 1054 (CApp (base,
adamc@467 1055 (CRel (nxs - i - 1), #2 sgn)),
adamc@467 1056 #2 sgn))
adamc@467 1057 base xs
adamc@467 1058
adamc@191 1059 val t =
adamc@191 1060 case to of
adamc@467 1061 NONE => base
adamc@467 1062 | SOME t => (TFun (t, base), #2 sgn)
adamc@191 1063 val k = (KType, #2 sgn)
adamc@191 1064 in
adamc@467 1065 foldr (fn (x, t) => (TCFun (Implicit, x, k, t), #2 sgn))
adamc@191 1066 t xs
adamc@191 1067 end)
adamc@162 1068 else
adamc@162 1069 NONE) xncs
adamc@162 1070 in
adamc@162 1071 case sgnSeek (fn SgiVal (x, _, c) => if x = field then SOME c else NONE
adamc@191 1072 | SgiDatatype (_, n, xs, xncs) => seek (n, xs, xncs)
adamc@191 1073 | SgiDatatypeImp (_, n, _, _, _, xs, xncs) => seek (n, xs, xncs)
adamc@162 1074 | _ => NONE) sgis of
adamc@162 1075 NONE => NONE
adamc@162 1076 | SOME (c, subs) => SOME (sgnSubCon (str, subs) c)
adamc@162 1077 end
adamc@34 1078 | SgnError => SOME (CError, ErrorMsg.dummySpan)
adamc@42 1079 | _ => NONE
adamc@34 1080
adamc@88 1081 fun sgnSeekConstraints (str, sgis) =
adamc@88 1082 let
adamc@88 1083 fun seek (sgis, sgns, strs, cons, acc) =
adamc@88 1084 case sgis of
adamc@88 1085 [] => acc
adamc@88 1086 | (sgi, _) :: sgis =>
adamc@88 1087 case sgi of
adamc@88 1088 SgiConstraint (c1, c2) =>
adamc@88 1089 let
adamc@88 1090 val sub = sgnSubCon (str, (sgns, strs, cons))
adamc@88 1091 in
adamc@88 1092 seek (sgis, sgns, strs, cons, (sub c1, sub c2) :: acc)
adamc@88 1093 end
adamc@88 1094 | SgiConAbs (x, n, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@88 1095 | SgiCon (x, n, _, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@191 1096 | SgiDatatype (x, n, _, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@191 1097 | SgiDatatypeImp (x, n, _, _, _, _, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@88 1098 | SgiVal _ => seek (sgis, sgns, strs, cons, acc)
adamc@88 1099 | SgiSgn (x, n, _) => seek (sgis, IM.insert (sgns, n, x), strs, cons, acc)
adamc@88 1100 | SgiStr (x, n, _) => seek (sgis, sgns, IM.insert (strs, n, x), cons, acc)
adamc@211 1101 | SgiClassAbs (x, n) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@211 1102 | SgiClass (x, n, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@88 1103 in
adamc@88 1104 seek (sgis, IM.empty, IM.empty, IM.empty, [])
adamc@88 1105 end
adamc@88 1106
adamc@88 1107 fun projectConstraints env {sgn, str} =
adamc@88 1108 case #1 (hnormSgn env sgn) of
adamc@88 1109 SgnConst sgis => SOME (sgnSeekConstraints (str, sgis))
adamc@88 1110 | SgnError => SOME []
adamc@88 1111 | _ => NONE
adamc@34 1112
adamc@447 1113 fun edeclBinds env (d, loc) =
adamc@447 1114 case d of
adamc@447 1115 EDVal (x, t, _) => pushERel env x t
adamc@447 1116 | EDValRec vis => foldl (fn ((x, t, _), env) => pushERel env x t) env vis
adamc@447 1117
adamc@157 1118 fun declBinds env (d, loc) =
adamc@157 1119 case d of
adamc@157 1120 DCon (x, n, k, c) => pushCNamedAs env x n k (SOME c)
adamc@191 1121 | DDatatype (x, n, xs, xncs) =>
adamc@157 1122 let
adamc@297 1123 val k = (KType, loc)
adamc@297 1124 val nxs = length xs
adamc@297 1125 val (tb, kb) = ListUtil.foldli (fn (i, x', (tb, kb)) =>
adamc@297 1126 ((CApp (tb, (CRel (nxs - i - 1), loc)), loc),
adamc@297 1127 (KArrow (k, kb), loc)))
adamc@297 1128 ((CNamed n, loc), k) xs
adamc@297 1129
adamc@297 1130 val env = pushCNamedAs env x n kb NONE
adamc@191 1131 val env = pushDatatype env n xs xncs
adamc@157 1132 in
adamc@191 1133 foldl (fn ((x', n', to), env) =>
adamc@191 1134 let
adamc@191 1135 val t =
adamc@191 1136 case to of
adamc@297 1137 NONE => tb
adamc@297 1138 | SOME t => (TFun (t, tb), loc)
adamc@297 1139 val t = foldr (fn (x, t) => (TCFun (Implicit, x, k, t), loc)) t xs
adamc@191 1140 in
adamc@191 1141 pushENamedAs env x' n' t
adamc@191 1142 end)
adamc@191 1143 env xncs
adamc@157 1144 end
adamc@191 1145 | DDatatypeImp (x, n, m, ms, x', xs, xncs) =>
adamc@157 1146 let
adamc@157 1147 val t = (CModProj (m, ms, x'), loc)
adamc@297 1148 val k = (KType, loc)
adamc@297 1149 val nxs = length xs
adamc@297 1150 val (tb, kb) = ListUtil.foldli (fn (i, x', (tb, kb)) =>
adamc@297 1151 ((CApp (tb, (CRel (nxs - i - 1), loc)), loc),
adamc@297 1152 (KArrow (k, kb), loc)))
adamc@297 1153 ((CNamed n, loc), k) xs
adamc@297 1154
adamc@341 1155 val env = pushCNamedAs env x n kb (SOME t)
adamc@191 1156 val env = pushDatatype env n xs xncs
adamc@157 1157 in
adamc@191 1158 foldl (fn ((x', n', to), env) =>
adamc@191 1159 let
adamc@191 1160 val t =
adamc@191 1161 case to of
adamc@297 1162 NONE => tb
adamc@297 1163 | SOME t => (TFun (t, tb), loc)
adamc@297 1164 val t = foldr (fn (x, t) => (TCFun (Implicit, x, k, t), loc)) t xs
adamc@191 1165 in
adamc@191 1166 pushENamedAs env x' n' t
adamc@191 1167 end)
adamc@191 1168 env xncs
adamc@157 1169 end
adamc@157 1170 | DVal (x, n, t, _) => pushENamedAs env x n t
adamc@157 1171 | DValRec vis => foldl (fn ((x, n, t, _), env) => pushENamedAs env x n t) env vis
adamc@157 1172 | DSgn (x, n, sgn) => pushSgnNamedAs env x n sgn
adamc@157 1173 | DStr (x, n, sgn, _) => pushStrNamedAs env x n sgn
adamc@157 1174 | DFfiStr (x, n, sgn) => pushStrNamedAs env x n sgn
adamc@157 1175 | DConstraint _ => env
adamc@157 1176 | DExport _ => env
adamc@205 1177 | DTable (tn, x, n, c) =>
adamc@205 1178 let
adamc@338 1179 val t = (CApp ((CModProj (tn, [], "sql_table"), loc), c), loc)
adamc@338 1180 in
adamc@338 1181 pushENamedAs env x n t
adamc@338 1182 end
adamc@338 1183 | DSequence (tn, x, n) =>
adamc@338 1184 let
adamc@338 1185 val t = (CModProj (tn, [], "sql_sequence"), loc)
adamc@205 1186 in
adamc@205 1187 pushENamedAs env x n t
adamc@205 1188 end
adamc@213 1189 | DClass (x, n, c) =>
adamc@213 1190 let
adamc@213 1191 val k = (KArrow ((KType, loc), (KType, loc)), loc)
adamc@213 1192 val env = pushCNamedAs env x n k (SOME c)
adamc@213 1193 in
adamc@213 1194 pushClass env n
adamc@213 1195 end
adamc@271 1196 | DDatabase _ => env
adamc@459 1197 | DCookie (tn, x, n, c) =>
adamc@459 1198 let
adamc@459 1199 val t = (CApp ((CModProj (tn, [], "cookie"), loc), c), loc)
adamc@459 1200 in
adamc@459 1201 pushENamedAs env x n t
adamc@459 1202 end
adamc@157 1203
adamc@243 1204 fun patBinds env (p, loc) =
adamc@243 1205 case p of
adamc@243 1206 PWild => env
adamc@243 1207 | PVar (x, t) => pushERel env x t
adamc@243 1208 | PPrim _ => env
adamc@243 1209 | PCon (_, _, _, NONE) => env
adamc@243 1210 | PCon (_, _, _, SOME p) => patBinds env p
adamc@243 1211 | PRecord xps => foldl (fn ((_, p, _), env) => patBinds env p) env xps
adamc@243 1212
adamc@2 1213 end