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annotate src/elab_env.sml @ 455:d4a81273d4b1

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Nested demo
author Adam Chlipala <adamc@hcoop.net>
date Tue, 04 Nov 2008 09:33:35 -0500
parents 222cbc1da232
children f542bc3133dc
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@211 153
adamc@216 154 fun ck2s ck =
adamc@216 155 case ck of
adamc@216 156 CkNamed n => "Named(" ^ Int.toString n ^ ")"
adamc@216 157 | CkRel n => "Rel(" ^ Int.toString n ^ ")"
adamc@216 158 | CkProj (m, ms, x) => "Proj(" ^ Int.toString m ^ "," ^ String.concatWith "," ms ^ "," ^ x ^ ")"
adamc@216 159
adamc@216 160 fun cp2s (cn, ck) = "(" ^ cn2s cn ^ "," ^ ck2s ck ^ ")"
adamc@216 161
adamc@211 162 structure KK = struct
adamc@211 163 type ord_key = class_key
adamc@211 164 open Order
adamc@211 165 fun compare x =
adamc@211 166 case x of
adamc@211 167 (CkNamed n1, CkNamed n2) => Int.compare (n1, n2)
adamc@211 168 | (CkNamed _, _) => LESS
adamc@211 169 | (_, CkNamed _) => GREATER
adamc@211 170
adamc@211 171 | (CkRel n1, CkRel n2) => Int.compare (n1, n2)
adamc@211 172 | (CkRel _, _) => LESS
adamc@211 173 | (_, CkRel _) => GREATER
adamc@211 174
adamc@211 175 | (CkProj (m1, ms1, x1), CkProj (m2, ms2, x2)) =>
adamc@211 176 join (Int.compare (m1, m2),
adamc@211 177 fn () => join (joinL String.compare (ms1, ms2),
adamc@211 178 fn () => String.compare (x1, x2)))
adamc@211 179 end
adamc@211 180
adamc@211 181 structure KM = BinaryMapFn(KK)
adamc@211 182
adamc@211 183 type class = {
adamc@211 184 ground : exp KM.map
adamc@211 185 }
adamc@211 186
adamc@211 187 val empty_class = {
adamc@211 188 ground = KM.empty
adamc@211 189 }
adamc@211 190
adamc@419 191 fun printClasses cs = (print "Classes:\n";
adamc@419 192 CM.appi (fn (cn, {ground = km}) =>
adamc@419 193 (print (cn2s cn ^ ":");
adamc@419 194 KM.appi (fn (ck, _) => print (" " ^ ck2s ck)) km;
adamc@419 195 print "\n")) cs)
adamc@216 196
adamc@2 197 type env = {
adamc@9 198 renameC : kind var' SM.map,
adamc@2 199 relC : (string * kind) list,
adamc@11 200 namedC : (string * kind * con option) IM.map,
adamc@9 201
adamc@157 202 datatypes : datatyp IM.map,
adamc@191 203 constructors : (datatype_kind * int * string list * con option * int) SM.map,
adamc@157 204
adamc@211 205 classes : class CM.map,
adamc@211 206
adamc@9 207 renameE : con var' SM.map,
adamc@9 208 relE : (string * con) list,
adamc@31 209 namedE : (string * con) IM.map,
adamc@31 210
adamc@31 211 renameSgn : (int * sgn) SM.map,
adamc@31 212 sgn : (string * sgn) IM.map,
adamc@31 213
adamc@31 214 renameStr : (int * sgn) SM.map,
adamc@31 215 str : (string * sgn) IM.map
adamc@2 216 }
adamc@2 217
adamc@2 218 val namedCounter = ref 0
adamc@2 219
adamc@109 220 fun newNamed () =
adamc@109 221 let
adamc@109 222 val r = !namedCounter
adamc@109 223 in
adamc@109 224 namedCounter := r + 1;
adamc@109 225 r
adamc@109 226 end
adamc@109 227
adamc@2 228 val empty = {
adamc@2 229 renameC = SM.empty,
adamc@2 230 relC = [],
adamc@9 231 namedC = IM.empty,
adamc@9 232
adamc@157 233 datatypes = IM.empty,
adamc@171 234 constructors = SM.empty,
adamc@157 235
adamc@211 236 classes = CM.empty,
adamc@211 237
adamc@9 238 renameE = SM.empty,
adamc@9 239 relE = [],
adamc@31 240 namedE = IM.empty,
adamc@31 241
adamc@31 242 renameSgn = SM.empty,
adamc@31 243 sgn = IM.empty,
adamc@31 244
adamc@31 245 renameStr = SM.empty,
adamc@31 246 str = IM.empty
adamc@2 247 }
adamc@2 248
adamc@211 249 fun liftClassKey ck =
adamc@211 250 case ck of
adamc@211 251 CkNamed _ => ck
adamc@211 252 | CkRel n => CkRel (n + 1)
adamc@211 253 | CkProj _ => ck
adamc@211 254
adamc@2 255 fun pushCRel (env : env) x k =
adamc@2 256 let
adamc@9 257 val renameC = SM.map (fn Rel' (n, k) => Rel' (n+1, k)
adamc@2 258 | x => x) (#renameC env)
adamc@2 259 in
adamc@9 260 {renameC = SM.insert (renameC, x, Rel' (0, k)),
adamc@2 261 relC = (x, k) :: #relC env,
adamc@13 262 namedC = IM.map (fn (x, k, co) => (x, k, Option.map lift co)) (#namedC env),
adamc@9 263
adamc@157 264 datatypes = #datatypes env,
adamc@171 265 constructors = #constructors env,
adamc@157 266
adamc@211 267 classes = CM.map (fn class => {
adamc@211 268 ground = KM.foldli (fn (ck, e, km) =>
adamc@211 269 KM.insert (km, liftClassKey ck, e))
adamc@211 270 KM.empty (#ground class)
adamc@211 271 })
adamc@211 272 (#classes env),
adamc@211 273
adamc@328 274 renameE = SM.map (fn Rel' (n, c) => Rel' (n, lift c)
adamc@328 275 | Named' (n, c) => Named' (n, lift c)) (#renameE env),
adamc@13 276 relE = map (fn (x, c) => (x, lift c)) (#relE env),
adamc@31 277 namedE = IM.map (fn (x, c) => (x, lift c)) (#namedE env),
adamc@31 278
adamc@31 279 renameSgn = #renameSgn env,
adamc@31 280 sgn = #sgn env,
adamc@31 281
adamc@31 282 renameStr = #renameStr env,
adamc@31 283 str = #str env
adamc@31 284 }
adamc@2 285 end
adamc@2 286
adamc@2 287 fun lookupCRel (env : env) n =
adamc@2 288 (List.nth (#relC env, n))
adamc@2 289 handle Subscript => raise UnboundRel n
adamc@2 290
adamc@11 291 fun pushCNamedAs (env : env) x n k co =
adamc@9 292 {renameC = SM.insert (#renameC env, x, Named' (n, k)),
adamc@5 293 relC = #relC env,
adamc@11 294 namedC = IM.insert (#namedC env, n, (x, k, co)),
adamc@9 295
adamc@157 296 datatypes = #datatypes env,
adamc@171 297 constructors = #constructors env,
adamc@157 298
adamc@211 299 classes = #classes env,
adamc@211 300
adamc@9 301 renameE = #renameE env,
adamc@9 302 relE = #relE env,
adamc@31 303 namedE = #namedE env,
adamc@31 304
adamc@31 305 renameSgn = #renameSgn env,
adamc@31 306 sgn = #sgn env,
adamc@31 307
adamc@31 308 renameStr = #renameStr env,
adamc@31 309 str = #str env}
adamc@5 310
adamc@11 311 fun pushCNamed env x k co =
adamc@2 312 let
adamc@2 313 val n = !namedCounter
adamc@2 314 in
adamc@2 315 namedCounter := n + 1;
adamc@11 316 (pushCNamedAs env x n k co, n)
adamc@2 317 end
adamc@2 318
adamc@2 319 fun lookupCNamed (env : env) n =
adamc@2 320 case IM.find (#namedC env, n) of
adamc@2 321 NONE => raise UnboundNamed n
adamc@2 322 | SOME x => x
adamc@2 323
adamc@2 324 fun lookupC (env : env) x =
adamc@2 325 case SM.find (#renameC env, x) of
adamc@9 326 NONE => NotBound
adamc@9 327 | SOME (Rel' x) => Rel x
adamc@9 328 | SOME (Named' x) => Named x
adamc@9 329
adamc@191 330 fun pushDatatype (env : env) n xs xncs =
adamc@188 331 let
adamc@188 332 val dk = U.classifyDatatype xncs
adamc@188 333 in
adamc@188 334 {renameC = #renameC env,
adamc@188 335 relC = #relC env,
adamc@188 336 namedC = #namedC env,
adamc@157 337
adamc@188 338 datatypes = IM.insert (#datatypes env, n,
adamc@191 339 (xs, foldl (fn ((x, n, to), cons) =>
adamc@191 340 IM.insert (cons, n, (x, to))) IM.empty xncs)),
adamc@188 341 constructors = foldl (fn ((x, n', to), cmap) =>
adamc@191 342 SM.insert (cmap, x, (dk, n', xs, to, n)))
adamc@188 343 (#constructors env) xncs,
adamc@157 344
adamc@211 345 classes = #classes env,
adamc@211 346
adamc@188 347 renameE = #renameE env,
adamc@188 348 relE = #relE env,
adamc@188 349 namedE = #namedE env,
adamc@157 350
adamc@188 351 renameSgn = #renameSgn env,
adamc@188 352 sgn = #sgn env,
adamc@157 353
adamc@188 354 renameStr = #renameStr env,
adamc@188 355 str = #str env}
adamc@188 356 end
adamc@157 357
adamc@157 358 fun lookupDatatype (env : env) n =
adamc@157 359 case IM.find (#datatypes env, n) of
adamc@157 360 NONE => raise UnboundNamed n
adamc@157 361 | SOME x => x
adamc@157 362
adamc@191 363 fun lookupDatatypeConstructor (_, dt) n =
adamc@157 364 case IM.find (dt, n) of
adamc@157 365 NONE => raise UnboundNamed n
adamc@157 366 | SOME x => x
adamc@157 367
adamc@171 368 fun lookupConstructor (env : env) s = SM.find (#constructors env, s)
adamc@171 369
adamc@191 370 fun datatypeArgs (xs, _) = xs
adamc@191 371 fun constructors (_, dt) = IM.foldri (fn (n, (x, to), ls) => (x, n, to) :: ls) [] dt
adamc@157 372
adamc@211 373 fun pushClass (env : env) n =
adamc@211 374 {renameC = #renameC env,
adamc@211 375 relC = #relC env,
adamc@211 376 namedC = #namedC env,
adamc@211 377
adamc@211 378 datatypes = #datatypes env,
adamc@211 379 constructors = #constructors env,
adamc@211 380
adamc@211 381 classes = CM.insert (#classes env, ClNamed n, {ground = KM.empty}),
adamc@211 382
adamc@211 383 renameE = #renameE env,
adamc@211 384 relE = #relE env,
adamc@211 385 namedE = #namedE env,
adamc@211 386
adamc@211 387 renameSgn = #renameSgn env,
adamc@211 388 sgn = #sgn env,
adamc@211 389
adamc@211 390 renameStr = #renameStr env,
adamc@403 391 str = #str env}
adamc@211 392
adamc@211 393 fun class_name_in (c, _) =
adamc@211 394 case c of
adamc@211 395 CNamed n => SOME (ClNamed n)
adamc@211 396 | CModProj x => SOME (ClProj x)
adamc@228 397 | CUnif (_, _, _, ref (SOME c)) => class_name_in c
adamc@211 398 | _ => NONE
adamc@211 399
adamc@403 400 fun isClass (env : env) c =
adamc@403 401 let
adamc@403 402 fun find NONE = false
adamc@403 403 | find (SOME c) = Option.isSome (CM.find (#classes env, c))
adamc@403 404 in
adamc@403 405 find (class_name_in c)
adamc@403 406 end
adamc@403 407
adamc@211 408 fun class_key_in (c, _) =
adamc@211 409 case c of
adamc@211 410 CRel n => SOME (CkRel n)
adamc@211 411 | CNamed n => SOME (CkNamed n)
adamc@211 412 | CModProj x => SOME (CkProj x)
adamc@228 413 | CUnif (_, _, _, ref (SOME c)) => class_key_in c
adamc@211 414 | _ => NONE
adamc@211 415
adamc@211 416 fun class_pair_in (c, _) =
adamc@211 417 case c of
adamc@211 418 CApp (f, x) =>
adamc@211 419 (case (class_name_in f, class_key_in x) of
adamc@211 420 (SOME f, SOME x) => SOME (f, x)
adamc@211 421 | _ => NONE)
adamc@452 422 | CUnif (_, _, _, ref (SOME c)) => class_pair_in c
adamc@211 423 | _ => NONE
adamc@211 424
adamc@211 425 fun resolveClass (env : env) c =
adamc@211 426 case class_pair_in c of
adamc@211 427 SOME (f, x) =>
adamc@211 428 (case CM.find (#classes env, f) of
adamc@211 429 NONE => NONE
adamc@211 430 | SOME class =>
adamc@211 431 case KM.find (#ground class, x) of
adamc@211 432 NONE => NONE
adamc@211 433 | SOME e => SOME e)
adamc@211 434 | _ => NONE
adamc@211 435
adamc@9 436 fun pushERel (env : env) x t =
adamc@9 437 let
adamc@9 438 val renameE = SM.map (fn Rel' (n, t) => Rel' (n+1, t)
adamc@9 439 | x => x) (#renameE env)
adamc@211 440
adamc@211 441 val classes = CM.map (fn class => {
adamc@211 442 ground = KM.map liftExp (#ground class)
adamc@211 443 }) (#classes env)
adamc@211 444 val classes = case class_pair_in t of
adamc@211 445 NONE => classes
adamc@211 446 | SOME (f, x) =>
adamc@403 447 case CM.find (classes, f) of
adamc@403 448 NONE => classes
adamc@403 449 | SOME class =>
adamc@403 450 let
adamc@403 451 val class = {
adamc@403 452 ground = KM.insert (#ground class, x, (ERel 0, #2 t))
adamc@403 453 }
adamc@403 454 in
adamc@403 455 CM.insert (classes, f, class)
adamc@403 456 end
adamc@9 457 in
adamc@9 458 {renameC = #renameC env,
adamc@9 459 relC = #relC env,
adamc@9 460 namedC = #namedC env,
adamc@9 461
adamc@157 462 datatypes = #datatypes env,
adamc@171 463 constructors = #constructors env,
adamc@157 464
adamc@211 465 classes = classes,
adamc@211 466
adamc@9 467 renameE = SM.insert (renameE, x, Rel' (0, t)),
adamc@9 468 relE = (x, t) :: #relE env,
adamc@31 469 namedE = #namedE env,
adamc@31 470
adamc@31 471 renameSgn = #renameSgn env,
adamc@31 472 sgn = #sgn env,
adamc@31 473
adamc@31 474 renameStr = #renameStr env,
adamc@31 475 str = #str env}
adamc@9 476 end
adamc@9 477
adamc@9 478 fun lookupERel (env : env) n =
adamc@9 479 (List.nth (#relE env, n))
adamc@9 480 handle Subscript => raise UnboundRel n
adamc@9 481
adamc@9 482 fun pushENamedAs (env : env) x n t =
adamc@211 483 let
adamc@211 484 val classes = #classes env
adamc@211 485 val classes = case class_pair_in t of
adamc@211 486 NONE => classes
adamc@211 487 | SOME (f, x) =>
adamc@403 488 case CM.find (classes, f) of
adamc@403 489 NONE => classes
adamc@403 490 | SOME class =>
adamc@403 491 let
adamc@403 492 val class = {
adamc@403 493 ground = KM.insert (#ground class, x, (ENamed n, #2 t))
adamc@403 494 }
adamc@403 495 in
adamc@403 496 CM.insert (classes, f, class)
adamc@403 497 end
adamc@211 498 in
adamc@211 499 {renameC = #renameC env,
adamc@211 500 relC = #relC env,
adamc@211 501 namedC = #namedC env,
adamc@9 502
adamc@211 503 datatypes = #datatypes env,
adamc@211 504 constructors = #constructors env,
adamc@157 505
adamc@211 506 classes = classes,
adamc@31 507
adamc@211 508 renameE = SM.insert (#renameE env, x, Named' (n, t)),
adamc@211 509 relE = #relE env,
adamc@211 510 namedE = IM.insert (#namedE env, n, (x, t)),
adamc@211 511
adamc@211 512 renameSgn = #renameSgn env,
adamc@211 513 sgn = #sgn env,
adamc@211 514
adamc@211 515 renameStr = #renameStr env,
adamc@211 516 str = #str env}
adamc@211 517 end
adamc@9 518
adamc@9 519 fun pushENamed env x t =
adamc@9 520 let
adamc@9 521 val n = !namedCounter
adamc@9 522 in
adamc@9 523 namedCounter := n + 1;
adamc@9 524 (pushENamedAs env x n t, n)
adamc@9 525 end
adamc@9 526
adamc@9 527 fun lookupENamed (env : env) n =
adamc@9 528 case IM.find (#namedE env, n) of
adamc@9 529 NONE => raise UnboundNamed n
adamc@9 530 | SOME x => x
adamc@9 531
adamc@9 532 fun lookupE (env : env) x =
adamc@9 533 case SM.find (#renameE env, x) of
adamc@9 534 NONE => NotBound
adamc@9 535 | SOME (Rel' x) => Rel x
adamc@9 536 | SOME (Named' x) => Named x
adamc@2 537
adamc@31 538 fun pushSgnNamedAs (env : env) x n sgis =
adamc@31 539 {renameC = #renameC env,
adamc@31 540 relC = #relC env,
adamc@31 541 namedC = #namedC env,
adamc@31 542
adamc@157 543 datatypes = #datatypes env,
adamc@171 544 constructors = #constructors env,
adamc@157 545
adamc@211 546 classes = #classes env,
adamc@211 547
adamc@31 548 renameE = #renameE env,
adamc@31 549 relE = #relE env,
adamc@31 550 namedE = #namedE env,
adamc@31 551
adamc@31 552 renameSgn = SM.insert (#renameSgn env, x, (n, sgis)),
adamc@31 553 sgn = IM.insert (#sgn env, n, (x, sgis)),
adamc@31 554
adamc@31 555 renameStr = #renameStr env,
adamc@31 556 str = #str env}
adamc@31 557
adamc@31 558 fun pushSgnNamed env x sgis =
adamc@31 559 let
adamc@31 560 val n = !namedCounter
adamc@31 561 in
adamc@31 562 namedCounter := n + 1;
adamc@31 563 (pushSgnNamedAs env x n sgis, n)
adamc@31 564 end
adamc@31 565
adamc@31 566 fun lookupSgnNamed (env : env) n =
adamc@31 567 case IM.find (#sgn env, n) of
adamc@31 568 NONE => raise UnboundNamed n
adamc@31 569 | SOME x => x
adamc@31 570
adamc@31 571 fun lookupSgn (env : env) x = SM.find (#renameSgn env, x)
adamc@31 572
adamc@31 573 fun lookupStrNamed (env : env) n =
adamc@31 574 case IM.find (#str env, n) of
adamc@31 575 NONE => raise UnboundNamed n
adamc@31 576 | SOME x => x
adamc@31 577
adamc@31 578 fun lookupStr (env : env) x = SM.find (#renameStr env, x)
adamc@31 579
adamc@203 580
adamc@216 581 fun sgiSeek (sgi, (sgns, strs, cons)) =
adamc@216 582 case sgi of
adamc@216 583 SgiConAbs (x, n, _) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 584 | SgiCon (x, n, _, _) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 585 | SgiDatatype (x, n, _, _) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 586 | SgiDatatypeImp (x, n, _, _, _, _, _) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 587 | SgiVal _ => (sgns, strs, cons)
adamc@216 588 | SgiSgn (x, n, _) => (IM.insert (sgns, n, x), strs, cons)
adamc@216 589 | SgiStr (x, n, _) => (sgns, IM.insert (strs, n, x), cons)
adamc@216 590 | SgiConstraint _ => (sgns, strs, cons)
adamc@216 591 | SgiTable _ => (sgns, strs, cons)
adamc@338 592 | SgiSequence _ => (sgns, strs, cons)
adamc@216 593 | SgiClassAbs (x, n) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 594 | SgiClass (x, n, _) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 595
adamc@34 596 fun sgnSeek f sgis =
adamc@34 597 let
adamc@59 598 fun seek (sgis, sgns, strs, cons) =
adamc@34 599 case sgis of
adamc@34 600 [] => NONE
adamc@34 601 | (sgi, _) :: sgis =>
adamc@34 602 case f sgi of
adamc@158 603 SOME v =>
adamc@158 604 let
adamc@158 605 val cons =
adamc@158 606 case sgi of
adamc@191 607 SgiDatatype (x, n, _, _) => IM.insert (cons, n, x)
adamc@191 608 | SgiDatatypeImp (x, n, _, _, _, _, _) => IM.insert (cons, n, x)
adamc@158 609 | _ => cons
adamc@158 610 in
adamc@158 611 SOME (v, (sgns, strs, cons))
adamc@158 612 end
adamc@88 613 | NONE =>
adamc@216 614 let
adamc@216 615 val (sgns, strs, cons) = sgiSeek (sgi, (sgns, strs, cons))
adamc@216 616 in
adamc@216 617 seek (sgis, sgns, strs, cons)
adamc@216 618 end
adamc@34 619 in
adamc@59 620 seek (sgis, IM.empty, IM.empty, IM.empty)
adamc@34 621 end
adamc@34 622
adamc@34 623 fun id x = x
adamc@34 624
adamc@34 625 fun unravelStr (str, _) =
adamc@34 626 case str of
adamc@34 627 StrVar x => (x, [])
adamc@34 628 | StrProj (str, m) =>
adamc@34 629 let
adamc@34 630 val (x, ms) = unravelStr str
adamc@34 631 in
adamc@34 632 (x, ms @ [m])
adamc@34 633 end
adamc@34 634 | _ => raise Fail "unravelStr"
adamc@34 635
adamc@59 636 fun sgnS_con (str, (sgns, strs, cons)) c =
adamc@34 637 case c of
adamc@34 638 CModProj (m1, ms, x) =>
adamc@34 639 (case IM.find (strs, m1) of
adamc@34 640 NONE => c
adamc@34 641 | SOME m1x =>
adamc@34 642 let
adamc@34 643 val (m1, ms') = unravelStr str
adamc@34 644 in
adamc@34 645 CModProj (m1, ms' @ m1x :: ms, x)
adamc@34 646 end)
adamc@34 647 | CNamed n =>
adamc@34 648 (case IM.find (cons, n) of
adamc@34 649 NONE => c
adamc@34 650 | SOME nx =>
adamc@34 651 let
adamc@34 652 val (m1, ms) = unravelStr str
adamc@34 653 in
adamc@34 654 CModProj (m1, ms, nx)
adamc@34 655 end)
adamc@34 656 | _ => c
adamc@34 657
adamc@216 658 fun sgnS_con' (m1, ms', (sgns, strs, cons)) c =
adamc@216 659 case c of
adamc@216 660 CModProj (m1, ms, x) =>
adamc@216 661 (case IM.find (strs, m1) of
adamc@216 662 NONE => c
adamc@216 663 | SOME m1x => CModProj (m1, ms' @ m1x :: ms, x))
adamc@216 664 | CNamed n =>
adamc@216 665 (case IM.find (cons, n) of
adamc@216 666 NONE => c
adamc@216 667 | SOME nx => CModProj (m1, ms', nx))
adamc@216 668 | _ => c
adamc@216 669
adamc@59 670 fun sgnS_sgn (str, (sgns, strs, cons)) sgn =
adamc@59 671 case sgn of
adamc@59 672 SgnProj (m1, ms, x) =>
adamc@59 673 (case IM.find (strs, m1) of
adamc@59 674 NONE => sgn
adamc@59 675 | SOME m1x =>
adamc@59 676 let
adamc@59 677 val (m1, ms') = unravelStr str
adamc@59 678 in
adamc@59 679 SgnProj (m1, ms' @ m1x :: ms, x)
adamc@59 680 end)
adamc@59 681 | SgnVar n =>
adamc@59 682 (case IM.find (sgns, n) of
adamc@59 683 NONE => sgn
adamc@59 684 | SOME nx =>
adamc@59 685 let
adamc@59 686 val (m1, ms) = unravelStr str
adamc@59 687 in
adamc@59 688 SgnProj (m1, ms, nx)
adamc@59 689 end)
adamc@59 690 | _ => sgn
adamc@59 691
adamc@59 692 fun sgnSubSgn x =
adamc@34 693 ElabUtil.Sgn.map {kind = id,
adamc@59 694 con = sgnS_con x,
adamc@34 695 sgn_item = id,
adamc@59 696 sgn = sgnS_sgn x}
adamc@34 697
adamc@211 698
adamc@211 699
adamc@211 700 and projectSgn env {sgn, str, field} =
adamc@211 701 case #1 (hnormSgn env sgn) of
adamc@211 702 SgnConst sgis =>
adamc@211 703 (case sgnSeek (fn SgiSgn (x, _, sgn) => if x = field then SOME sgn else NONE | _ => NONE) sgis of
adamc@211 704 NONE => NONE
adamc@211 705 | SOME (sgn, subs) => SOME (sgnSubSgn (str, subs) sgn))
adamc@211 706 | SgnError => SOME (SgnError, ErrorMsg.dummySpan)
adamc@211 707 | _ => NONE
adamc@211 708
adamc@211 709 and hnormSgn env (all as (sgn, loc)) =
adamc@34 710 case sgn of
adamc@42 711 SgnError => all
adamc@42 712 | SgnVar n => hnormSgn env (#2 (lookupSgnNamed env n))
adamc@42 713 | SgnConst _ => all
adamc@42 714 | SgnFun _ => all
adamc@59 715 | SgnProj (m, ms, x) =>
adamc@59 716 let
adamc@59 717 val (_, sgn) = lookupStrNamed env m
adamc@59 718 in
adamc@59 719 case projectSgn env {str = foldl (fn (m, str) => (StrProj (str, m), loc)) (StrVar m, loc) ms,
adamc@59 720 sgn = sgn,
adamc@59 721 field = x} of
adamc@59 722 NONE => raise Fail "ElabEnv.hnormSgn: projectSgn failed"
adamc@59 723 | SOME sgn => sgn
adamc@59 724 end
adamc@42 725 | SgnWhere (sgn, x, c) =>
adamc@42 726 case #1 (hnormSgn env sgn) of
adamc@42 727 SgnError => (SgnError, loc)
adamc@42 728 | SgnConst sgis =>
adamc@42 729 let
adamc@42 730 fun traverse (pre, post) =
adamc@42 731 case post of
adamc@42 732 [] => raise Fail "ElabEnv.hnormSgn: Can't reduce 'where' [1]"
adamc@42 733 | (sgi as (SgiConAbs (x', n, k), loc)) :: rest =>
adamc@42 734 if x = x' then
adamc@42 735 List.revAppend (pre, (SgiCon (x', n, k, c), loc) :: rest)
adamc@42 736 else
adamc@42 737 traverse (sgi :: pre, rest)
adamc@42 738 | sgi :: rest => traverse (sgi :: pre, rest)
adamc@42 739
adamc@42 740 val sgis = traverse ([], sgis)
adamc@42 741 in
adamc@42 742 (SgnConst sgis, loc)
adamc@42 743 end
adamc@42 744 | _ => raise Fail "ElabEnv.hnormSgn: Can't reduce 'where' [2]"
adamc@42 745
adamc@211 746 fun enrichClasses env classes (m1, ms) sgn =
adamc@59 747 case #1 (hnormSgn env sgn) of
adamc@59 748 SgnConst sgis =>
adamc@211 749 let
adamc@218 750 val (classes, _, _, _) =
adamc@218 751 foldl (fn (sgi, (classes, newClasses, fmap, env)) =>
adamc@211 752 let
adamc@211 753 fun found (x, n) =
adamc@211 754 (CM.insert (classes,
adamc@211 755 ClProj (m1, ms, x),
adamc@211 756 empty_class),
adamc@216 757 IM.insert (newClasses, n, x),
adamc@218 758 sgiSeek (#1 sgi, fmap),
adamc@218 759 env)
adamc@216 760
adamc@218 761 fun default () = (classes, newClasses, sgiSeek (#1 sgi, fmap), env)
adamc@211 762 in
adamc@211 763 case #1 sgi of
adamc@217 764 SgiStr (x, _, sgn) =>
adamc@217 765 (enrichClasses env classes (m1, ms @ [x]) sgn,
adamc@217 766 newClasses,
adamc@218 767 sgiSeek (#1 sgi, fmap),
adamc@218 768 env)
adamc@218 769 | SgiSgn (x, n, sgn) =>
adamc@218 770 (classes,
adamc@218 771 newClasses,
adamc@218 772 fmap,
adamc@218 773 pushSgnNamedAs env x n sgn)
adamc@218 774
adamc@217 775 | SgiClassAbs xn => found xn
adamc@211 776 | SgiClass (x, n, _) => found (x, n)
adamc@419 777 | SgiVal (x, n, (CApp (f, a), _)) =>
adamc@419 778 let
adamc@419 779 fun unravel c =
adamc@419 780 case #1 c of
adamc@419 781 CUnif (_, _, _, ref (SOME c)) => unravel c
adamc@419 782 | CNamed n =>
adamc@419 783 ((case lookupCNamed env n of
adamc@419 784 (_, _, SOME c) => unravel c
adamc@419 785 | _ => c)
adamc@419 786 handle UnboundNamed _ => c)
adamc@419 787 | _ => c
adamc@216 788
adamc@419 789 val nc =
adamc@419 790 case f of
adamc@419 791 (CNamed f, _) => IM.find (newClasses, f)
adamc@419 792 | _ => NONE
adamc@419 793 in
adamc@419 794 case nc of
adamc@419 795 NONE =>
adamc@419 796 (case (class_name_in (unravel f),
adamc@419 797 class_key_in (sgnS_con' (m1, ms, fmap) (#1 a), #2 a)) of
adamc@419 798 (SOME cn, SOME ck) =>
adamc@419 799 let
adamc@419 800 val classes =
adamc@419 801 case CM.find (classes, cn) of
adamc@419 802 NONE => classes
adamc@419 803 | SOME class =>
adamc@419 804 let
adamc@419 805 val class = {
adamc@419 806 ground = KM.insert (#ground class, ck,
adamc@419 807 (EModProj (m1, ms, x), #2 sgn))
adamc@419 808 }
adamc@419 809 in
adamc@419 810 CM.insert (classes, cn, class)
adamc@419 811 end
adamc@419 812 in
adamc@419 813 (classes,
adamc@419 814 newClasses,
adamc@419 815 fmap,
adamc@419 816 env)
adamc@419 817 end
adamc@419 818 | _ => default ())
adamc@419 819 | SOME fx =>
adamc@419 820 case class_key_in (sgnS_con' (m1, ms, fmap) (#1 a), #2 a) of
adamc@419 821 NONE => default ()
adamc@419 822 | SOME ck =>
adamc@419 823 let
adamc@419 824 val cn = ClProj (m1, ms, fx)
adamc@419 825
adamc@419 826 val classes =
adamc@419 827 case CM.find (classes, cn) of
adamc@419 828 NONE => classes
adamc@419 829 | SOME class =>
adamc@419 830 let
adamc@419 831 val class = {
adamc@419 832 ground = KM.insert (#ground class, ck,
adamc@419 833 (EModProj (m1, ms, x), #2 sgn))
adamc@419 834 }
adamc@419 835 in
adamc@419 836 CM.insert (classes, cn, class)
adamc@419 837 end
adamc@419 838 in
adamc@419 839 (classes,
adamc@419 840 newClasses,
adamc@419 841 fmap,
adamc@419 842 env)
adamc@419 843 end
adamc@419 844 end
adamc@217 845 | SgiVal _ => default ()
adamc@216 846 | _ => default ()
adamc@211 847 end)
adamc@218 848 (classes, IM.empty, (IM.empty, IM.empty, IM.empty), env) sgis
adamc@211 849 in
adamc@211 850 classes
adamc@211 851 end
adamc@211 852 | _ => classes
adamc@211 853
adamc@211 854 fun pushStrNamedAs (env : env) x n sgn =
adamc@211 855 {renameC = #renameC env,
adamc@211 856 relC = #relC env,
adamc@211 857 namedC = #namedC env,
adamc@211 858
adamc@211 859 datatypes = #datatypes env,
adamc@211 860 constructors = #constructors env,
adamc@211 861
adamc@211 862 classes = enrichClasses env (#classes env) (n, []) sgn,
adamc@211 863
adamc@211 864 renameE = #renameE env,
adamc@211 865 relE = #relE env,
adamc@211 866 namedE = #namedE env,
adamc@211 867
adamc@211 868 renameSgn = #renameSgn env,
adamc@211 869 sgn = #sgn env,
adamc@211 870
adamc@211 871 renameStr = SM.insert (#renameStr env, x, (n, sgn)),
adamc@211 872 str = IM.insert (#str env, n, (x, sgn))}
adamc@211 873
adamc@211 874 fun pushStrNamed env x sgn =
adamc@211 875 let
adamc@211 876 val n = !namedCounter
adamc@211 877 in
adamc@211 878 namedCounter := n + 1;
adamc@211 879 (pushStrNamedAs env x n sgn, n)
adamc@211 880 end
adamc@211 881
adamc@211 882 fun sgiBinds env (sgi, loc) =
adamc@211 883 case sgi of
adamc@211 884 SgiConAbs (x, n, k) => pushCNamedAs env x n k NONE
adamc@211 885 | SgiCon (x, n, k, c) => pushCNamedAs env x n k (SOME c)
adamc@211 886 | SgiDatatype (x, n, xs, xncs) =>
adamc@211 887 let
adamc@341 888 val k = (KType, loc)
adamc@341 889 val k' = foldr (fn (_, k') => (KArrow (k, k'), loc)) k xs
adamc@341 890
adamc@341 891 val env = pushCNamedAs env x n k' NONE
adamc@211 892 in
adamc@211 893 foldl (fn ((x', n', to), env) =>
adamc@211 894 let
adamc@211 895 val t =
adamc@211 896 case to of
adamc@211 897 NONE => (CNamed n, loc)
adamc@211 898 | SOME t => (TFun (t, (CNamed n, loc)), loc)
adamc@211 899
adamc@211 900 val k = (KType, loc)
adamc@211 901 val t = foldr (fn (x, t) => (TCFun (Explicit, x, k, t), loc)) t xs
adamc@211 902 in
adamc@211 903 pushENamedAs env x' n' t
adamc@211 904 end)
adamc@211 905 env xncs
adamc@211 906 end
adamc@211 907 | SgiDatatypeImp (x, n, m1, ms, x', xs, xncs) =>
adamc@211 908 let
adamc@341 909 val k = (KType, loc)
adamc@341 910 val k' = foldr (fn (_, k') => (KArrow (k, k'), loc)) k xs
adamc@341 911
adamc@341 912 val env = pushCNamedAs env x n k' (SOME (CModProj (m1, ms, x'), loc))
adamc@211 913 in
adamc@211 914 foldl (fn ((x', n', to), env) =>
adamc@211 915 let
adamc@211 916 val t =
adamc@211 917 case to of
adamc@211 918 NONE => (CNamed n, loc)
adamc@211 919 | SOME t => (TFun (t, (CNamed n, loc)), loc)
adamc@211 920
adamc@211 921 val k = (KType, loc)
adamc@211 922 val t = foldr (fn (x, t) => (TCFun (Explicit, x, k, t), loc)) t xs
adamc@211 923 in
adamc@211 924 pushENamedAs env x' n' t
adamc@211 925 end)
adamc@211 926 env xncs
adamc@211 927 end
adamc@211 928 | SgiVal (x, n, t) => pushENamedAs env x n t
adamc@211 929 | SgiStr (x, n, sgn) => pushStrNamedAs env x n sgn
adamc@211 930 | SgiSgn (x, n, sgn) => pushSgnNamedAs env x n sgn
adamc@211 931 | SgiConstraint _ => env
adamc@211 932
adamc@211 933 | SgiTable (tn, x, n, c) =>
adamc@211 934 let
adamc@338 935 val t = (CApp ((CModProj (tn, [], "sql_table"), loc), c), loc)
adamc@338 936 in
adamc@338 937 pushENamedAs env x n t
adamc@338 938 end
adamc@338 939 | SgiSequence (tn, x, n) =>
adamc@338 940 let
adamc@338 941 val t = (CModProj (tn, [], "sql_sequence"), loc)
adamc@211 942 in
adamc@211 943 pushENamedAs env x n t
adamc@211 944 end
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@211 948
adamc@211 949
adamc@211 950 fun sgnSubCon x =
adamc@211 951 ElabUtil.Con.map {kind = id,
adamc@211 952 con = sgnS_con x}
adamc@59 953
adamc@59 954 fun projectStr env {sgn, str, field} =
adamc@59 955 case #1 (hnormSgn env sgn) of
adamc@59 956 SgnConst sgis =>
adamc@59 957 (case sgnSeek (fn SgiStr (x, _, sgn) => if x = field then SOME sgn else NONE | _ => NONE) sgis of
adamc@59 958 NONE => NONE
adamc@59 959 | SOME (sgn, subs) => SOME (sgnSubSgn (str, subs) sgn))
adamc@59 960 | SgnError => SOME (SgnError, ErrorMsg.dummySpan)
adamc@59 961 | _ => NONE
adamc@59 962
adamc@158 963 fun chaseMpath env (n, ms) =
adamc@158 964 let
adamc@158 965 val (_, sgn) = lookupStrNamed env n
adamc@158 966 in
adamc@158 967 foldl (fn (m, (str, sgn)) =>
adamc@158 968 case projectStr env {sgn = sgn, str = str, field = m} of
adamc@158 969 NONE => raise Fail "kindof: Unknown substructure"
adamc@158 970 | SOME sgn => ((StrProj (str, m), #2 sgn), sgn))
adamc@158 971 ((StrVar n, #2 sgn), sgn) ms
adamc@158 972 end
adamc@158 973
adamc@42 974 fun projectCon env {sgn, str, field} =
adamc@42 975 case #1 (hnormSgn env sgn) of
adamc@34 976 SgnConst sgis =>
adamc@34 977 (case sgnSeek (fn SgiConAbs (x, _, k) => if x = field then SOME (k, NONE) else NONE
adamc@34 978 | SgiCon (x, _, k, c) => if x = field then SOME (k, SOME c) else NONE
adamc@341 979 | SgiDatatype (x, _, xs, _) =>
adamc@158 980 if x = field then
adamc@341 981 let
adamc@341 982 val k = (KType, #2 sgn)
adamc@341 983 val k' = foldl (fn (_, k') => (KArrow (k, k'), #2 sgn)) k xs
adamc@341 984 in
adamc@341 985 SOME (k', NONE)
adamc@341 986 end
adamc@341 987 else
adamc@341 988 NONE
adamc@341 989 | SgiDatatypeImp (x, _, m1, ms, x', xs, _) =>
adamc@341 990 if x = field then
adamc@341 991 let
adamc@341 992 val k = (KType, #2 sgn)
adamc@341 993 val k' = foldl (fn (_, k') => (KArrow (k, k'), #2 sgn)) k xs
adamc@341 994 in
adamc@341 995 SOME (k', SOME (CModProj (m1, ms, x'), #2 sgn))
adamc@341 996 end
adamc@158 997 else
adamc@158 998 NONE
adamc@216 999 | SgiClassAbs (x, _) => if x = field then
adamc@216 1000 SOME ((KArrow ((KType, #2 sgn), (KType, #2 sgn)), #2 sgn), NONE)
adamc@216 1001 else
adamc@216 1002 NONE
adamc@216 1003 | SgiClass (x, _, c) => if x = field then
adamc@216 1004 SOME ((KArrow ((KType, #2 sgn), (KType, #2 sgn)), #2 sgn), SOME c)
adamc@216 1005 else
adamc@216 1006 NONE
adamc@34 1007 | _ => NONE) sgis of
adamc@34 1008 NONE => NONE
adamc@34 1009 | SOME ((k, co), subs) => SOME (k, Option.map (sgnSubCon (str, subs)) co))
adamc@34 1010 | SgnError => SOME ((KError, ErrorMsg.dummySpan), SOME (CError, ErrorMsg.dummySpan))
adamc@42 1011 | _ => NONE
adamc@34 1012
adamc@157 1013 fun projectDatatype env {sgn, str, field} =
adamc@157 1014 case #1 (hnormSgn env sgn) of
adamc@157 1015 SgnConst sgis =>
adamc@191 1016 (case sgnSeek (fn SgiDatatype (x, _, xs, xncs) => if x = field then SOME (xs, xncs) else NONE
adamc@191 1017 | SgiDatatypeImp (x, _, _, _, _, xs, xncs) => if x = field then SOME (xs, xncs) else NONE
adamc@157 1018 | _ => NONE) sgis of
adamc@157 1019 NONE => NONE
adamc@191 1020 | SOME ((xs, xncs), subs) => SOME (xs,
adamc@191 1021 map (fn (x, n, to) => (x, n, Option.map (sgnSubCon (str, subs)) to)) xncs))
adamc@157 1022 | _ => NONE
adamc@157 1023
adamc@174 1024 fun projectConstructor env {sgn, str, field} =
adamc@174 1025 case #1 (hnormSgn env sgn) of
adamc@174 1026 SgnConst sgis =>
adamc@174 1027 let
adamc@191 1028 fun consider (n, xs, xncs) =
adamc@174 1029 ListUtil.search (fn (x, n', to) =>
adamc@174 1030 if x <> field then
adamc@174 1031 NONE
adamc@174 1032 else
adamc@191 1033 SOME (U.classifyDatatype xncs, n', xs, to, (CNamed n, #2 str))) xncs
adamc@174 1034 in
adamc@191 1035 case sgnSeek (fn SgiDatatype (_, n, xs, xncs) => consider (n, xs, xncs)
adamc@191 1036 | SgiDatatypeImp (_, n, _, _, _, xs, xncs) => consider (n, xs, xncs)
adamc@174 1037 | _ => NONE) sgis of
adamc@174 1038 NONE => NONE
adamc@191 1039 | SOME ((dk, n, xs, to, t), subs) => SOME (dk, n, xs, Option.map (sgnSubCon (str, subs)) to,
adamc@191 1040 sgnSubCon (str, subs) t)
adamc@174 1041 end
adamc@174 1042 | _ => NONE
adamc@174 1043
adamc@42 1044 fun projectVal env {sgn, str, field} =
adamc@42 1045 case #1 (hnormSgn env sgn) of
adamc@34 1046 SgnConst sgis =>
adamc@162 1047 let
adamc@191 1048 fun seek (n, xs, xncs) =
adamc@162 1049 ListUtil.search (fn (x, _, to) =>
adamc@162 1050 if x = field then
adamc@191 1051 SOME (let
adamc@191 1052 val t =
adamc@191 1053 case to of
adamc@191 1054 NONE => (CNamed n, #2 sgn)
adamc@191 1055 | SOME t => (TFun (t, (CNamed n, #2 sgn)), #2 sgn)
adamc@191 1056 val k = (KType, #2 sgn)
adamc@191 1057 in
adamc@191 1058 foldr (fn (x, t) => (TCFun (Explicit, x, k, t), #2 sgn))
adamc@191 1059 t xs
adamc@191 1060 end)
adamc@162 1061 else
adamc@162 1062 NONE) xncs
adamc@162 1063 in
adamc@162 1064 case sgnSeek (fn SgiVal (x, _, c) => if x = field then SOME c else NONE
adamc@191 1065 | SgiDatatype (_, n, xs, xncs) => seek (n, xs, xncs)
adamc@191 1066 | SgiDatatypeImp (_, n, _, _, _, xs, xncs) => seek (n, xs, xncs)
adamc@162 1067 | _ => NONE) sgis of
adamc@162 1068 NONE => NONE
adamc@162 1069 | SOME (c, subs) => SOME (sgnSubCon (str, subs) c)
adamc@162 1070 end
adamc@34 1071 | SgnError => SOME (CError, ErrorMsg.dummySpan)
adamc@42 1072 | _ => NONE
adamc@34 1073
adamc@88 1074 fun sgnSeekConstraints (str, sgis) =
adamc@88 1075 let
adamc@88 1076 fun seek (sgis, sgns, strs, cons, acc) =
adamc@88 1077 case sgis of
adamc@88 1078 [] => acc
adamc@88 1079 | (sgi, _) :: sgis =>
adamc@88 1080 case sgi of
adamc@88 1081 SgiConstraint (c1, c2) =>
adamc@88 1082 let
adamc@88 1083 val sub = sgnSubCon (str, (sgns, strs, cons))
adamc@88 1084 in
adamc@88 1085 seek (sgis, sgns, strs, cons, (sub c1, sub c2) :: acc)
adamc@88 1086 end
adamc@88 1087 | SgiConAbs (x, n, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@88 1088 | SgiCon (x, n, _, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@191 1089 | SgiDatatype (x, n, _, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@191 1090 | SgiDatatypeImp (x, n, _, _, _, _, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@88 1091 | SgiVal _ => seek (sgis, sgns, strs, cons, acc)
adamc@88 1092 | SgiSgn (x, n, _) => seek (sgis, IM.insert (sgns, n, x), strs, cons, acc)
adamc@88 1093 | SgiStr (x, n, _) => seek (sgis, sgns, IM.insert (strs, n, x), cons, acc)
adamc@203 1094 | SgiTable _ => seek (sgis, sgns, strs, cons, acc)
adamc@338 1095 | SgiSequence _ => seek (sgis, sgns, strs, cons, acc)
adamc@211 1096 | SgiClassAbs (x, n) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@211 1097 | SgiClass (x, n, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@88 1098 in
adamc@88 1099 seek (sgis, IM.empty, IM.empty, IM.empty, [])
adamc@88 1100 end
adamc@88 1101
adamc@88 1102 fun projectConstraints env {sgn, str} =
adamc@88 1103 case #1 (hnormSgn env sgn) of
adamc@88 1104 SgnConst sgis => SOME (sgnSeekConstraints (str, sgis))
adamc@88 1105 | SgnError => SOME []
adamc@88 1106 | _ => NONE
adamc@34 1107
adamc@447 1108 fun edeclBinds env (d, loc) =
adamc@447 1109 case d of
adamc@447 1110 EDVal (x, t, _) => pushERel env x t
adamc@447 1111 | EDValRec vis => foldl (fn ((x, t, _), env) => pushERel env x t) env vis
adamc@447 1112
adamc@157 1113 fun declBinds env (d, loc) =
adamc@157 1114 case d of
adamc@157 1115 DCon (x, n, k, c) => pushCNamedAs env x n k (SOME c)
adamc@191 1116 | DDatatype (x, n, xs, xncs) =>
adamc@157 1117 let
adamc@297 1118 val k = (KType, loc)
adamc@297 1119 val nxs = length xs
adamc@297 1120 val (tb, kb) = ListUtil.foldli (fn (i, x', (tb, kb)) =>
adamc@297 1121 ((CApp (tb, (CRel (nxs - i - 1), loc)), loc),
adamc@297 1122 (KArrow (k, kb), loc)))
adamc@297 1123 ((CNamed n, loc), k) xs
adamc@297 1124
adamc@297 1125 val env = pushCNamedAs env x n kb NONE
adamc@191 1126 val env = pushDatatype env n xs xncs
adamc@157 1127 in
adamc@191 1128 foldl (fn ((x', n', to), env) =>
adamc@191 1129 let
adamc@191 1130 val t =
adamc@191 1131 case to of
adamc@297 1132 NONE => tb
adamc@297 1133 | SOME t => (TFun (t, tb), loc)
adamc@297 1134 val t = foldr (fn (x, t) => (TCFun (Implicit, x, k, t), loc)) t xs
adamc@191 1135 in
adamc@191 1136 pushENamedAs env x' n' t
adamc@191 1137 end)
adamc@191 1138 env xncs
adamc@157 1139 end
adamc@191 1140 | DDatatypeImp (x, n, m, ms, x', xs, xncs) =>
adamc@157 1141 let
adamc@157 1142 val t = (CModProj (m, ms, x'), loc)
adamc@297 1143 val k = (KType, loc)
adamc@297 1144 val nxs = length xs
adamc@297 1145 val (tb, kb) = ListUtil.foldli (fn (i, x', (tb, kb)) =>
adamc@297 1146 ((CApp (tb, (CRel (nxs - i - 1), loc)), loc),
adamc@297 1147 (KArrow (k, kb), loc)))
adamc@297 1148 ((CNamed n, loc), k) xs
adamc@297 1149
adamc@341 1150 val env = pushCNamedAs env x n kb (SOME t)
adamc@191 1151 val env = pushDatatype env n xs xncs
adamc@157 1152 in
adamc@191 1153 foldl (fn ((x', n', to), env) =>
adamc@191 1154 let
adamc@191 1155 val t =
adamc@191 1156 case to of
adamc@297 1157 NONE => tb
adamc@297 1158 | SOME t => (TFun (t, tb), loc)
adamc@297 1159 val t = foldr (fn (x, t) => (TCFun (Implicit, x, k, t), loc)) t xs
adamc@191 1160 in
adamc@191 1161 pushENamedAs env x' n' t
adamc@191 1162 end)
adamc@191 1163 env xncs
adamc@157 1164 end
adamc@157 1165 | DVal (x, n, t, _) => pushENamedAs env x n t
adamc@157 1166 | DValRec vis => foldl (fn ((x, n, t, _), env) => pushENamedAs env x n t) env vis
adamc@157 1167 | DSgn (x, n, sgn) => pushSgnNamedAs env x n sgn
adamc@157 1168 | DStr (x, n, sgn, _) => pushStrNamedAs env x n sgn
adamc@157 1169 | DFfiStr (x, n, sgn) => pushStrNamedAs env x n sgn
adamc@157 1170 | DConstraint _ => env
adamc@157 1171 | DExport _ => env
adamc@205 1172 | DTable (tn, x, n, c) =>
adamc@205 1173 let
adamc@338 1174 val t = (CApp ((CModProj (tn, [], "sql_table"), loc), c), loc)
adamc@338 1175 in
adamc@338 1176 pushENamedAs env x n t
adamc@338 1177 end
adamc@338 1178 | DSequence (tn, x, n) =>
adamc@338 1179 let
adamc@338 1180 val t = (CModProj (tn, [], "sql_sequence"), loc)
adamc@205 1181 in
adamc@205 1182 pushENamedAs env x n t
adamc@205 1183 end
adamc@213 1184 | DClass (x, n, c) =>
adamc@213 1185 let
adamc@213 1186 val k = (KArrow ((KType, loc), (KType, loc)), loc)
adamc@213 1187 val env = pushCNamedAs env x n k (SOME c)
adamc@213 1188 in
adamc@213 1189 pushClass env n
adamc@213 1190 end
adamc@271 1191 | DDatabase _ => env
adamc@157 1192
adamc@243 1193 fun patBinds env (p, loc) =
adamc@243 1194 case p of
adamc@243 1195 PWild => env
adamc@243 1196 | PVar (x, t) => pushERel env x t
adamc@243 1197 | PPrim _ => env
adamc@243 1198 | PCon (_, _, _, NONE) => env
adamc@243 1199 | PCon (_, _, _, SOME p) => patBinds env p
adamc@243 1200 | PRecord xps => foldl (fn ((_, p, _), env) => patBinds env p) env xps
adamc@243 1201
adamc@2 1202 end