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Resolving lingering type class constraints
author Adam Chlipala <adamc@hcoop.net>
date Thu, 21 Aug 2008 14:45:31 -0400
parents a3413288cce1
children 2b9dfaffb008
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@211 64 val liftExpInExp =
adamc@211 65 U.Exp.mapB {kind = fn k => k,
adamc@211 66 con = fn _ => fn c => c,
adamc@211 67 exp = fn bound => fn e =>
adamc@211 68 case e of
adamc@211 69 ERel xn =>
adamc@211 70 if xn < bound then
adamc@211 71 e
adamc@211 72 else
adamc@211 73 ERel (xn + 1)
adamc@211 74 | _ => e,
adamc@211 75 bind = fn (bound, U.Exp.RelE _) => bound + 1
adamc@211 76 | (bound, _) => bound}
adamc@211 77
adamc@211 78
adamc@211 79 val liftExp = liftExpInExp 0
adamc@13 80
adamc@13 81 (* Back to environments *)
adamc@13 82
adamc@9 83 datatype 'a var' =
adamc@9 84 Rel' of int * 'a
adamc@9 85 | Named' of int * 'a
adamc@2 86
adamc@9 87 datatype 'a var =
adamc@9 88 NotBound
adamc@9 89 | Rel of int * 'a
adamc@9 90 | Named of int * 'a
adamc@2 91
adamc@191 92 type datatyp = string list * (string * con option) IM.map
adamc@157 93
adamc@211 94 datatype class_name =
adamc@211 95 ClNamed of int
adamc@211 96 | ClProj of int * string list * string
adamc@211 97
adamc@216 98 fun cn2s cn =
adamc@216 99 case cn of
adamc@216 100 ClNamed n => "Named(" ^ Int.toString n ^ ")"
adamc@216 101 | ClProj (m, ms, x) => "Proj(" ^ Int.toString m ^ "," ^ String.concatWith "," ms ^ "," ^ x ^ ")"
adamc@216 102
adamc@211 103 structure CK = struct
adamc@211 104 type ord_key = class_name
adamc@211 105 open Order
adamc@211 106 fun compare x =
adamc@211 107 case x of
adamc@211 108 (ClNamed n1, ClNamed n2) => Int.compare (n1, n2)
adamc@211 109 | (ClNamed _, _) => LESS
adamc@211 110 | (_, ClNamed _) => GREATER
adamc@211 111
adamc@211 112 | (ClProj (m1, ms1, x1), ClProj (m2, ms2, x2)) =>
adamc@211 113 join (Int.compare (m1, m2),
adamc@211 114 fn () => join (joinL String.compare (ms1, ms2),
adamc@211 115 fn () => String.compare (x1, x2)))
adamc@211 116 end
adamc@211 117
adamc@211 118 structure CM = BinaryMapFn(CK)
adamc@211 119
adamc@211 120 datatype class_key =
adamc@211 121 CkNamed of int
adamc@211 122 | CkRel of int
adamc@211 123 | CkProj of int * string list * string
adamc@211 124
adamc@216 125 fun ck2s ck =
adamc@216 126 case ck of
adamc@216 127 CkNamed n => "Named(" ^ Int.toString n ^ ")"
adamc@216 128 | CkRel n => "Rel(" ^ Int.toString n ^ ")"
adamc@216 129 | CkProj (m, ms, x) => "Proj(" ^ Int.toString m ^ "," ^ String.concatWith "," ms ^ "," ^ x ^ ")"
adamc@216 130
adamc@216 131 fun cp2s (cn, ck) = "(" ^ cn2s cn ^ "," ^ ck2s ck ^ ")"
adamc@216 132
adamc@211 133 structure KK = struct
adamc@211 134 type ord_key = class_key
adamc@211 135 open Order
adamc@211 136 fun compare x =
adamc@211 137 case x of
adamc@211 138 (CkNamed n1, CkNamed n2) => Int.compare (n1, n2)
adamc@211 139 | (CkNamed _, _) => LESS
adamc@211 140 | (_, CkNamed _) => GREATER
adamc@211 141
adamc@211 142 | (CkRel n1, CkRel n2) => Int.compare (n1, n2)
adamc@211 143 | (CkRel _, _) => LESS
adamc@211 144 | (_, CkRel _) => GREATER
adamc@211 145
adamc@211 146 | (CkProj (m1, ms1, x1), CkProj (m2, ms2, x2)) =>
adamc@211 147 join (Int.compare (m1, m2),
adamc@211 148 fn () => join (joinL String.compare (ms1, ms2),
adamc@211 149 fn () => String.compare (x1, x2)))
adamc@211 150 end
adamc@211 151
adamc@211 152 structure KM = BinaryMapFn(KK)
adamc@211 153
adamc@211 154 type class = {
adamc@211 155 ground : exp KM.map
adamc@211 156 }
adamc@211 157
adamc@211 158 val empty_class = {
adamc@211 159 ground = KM.empty
adamc@211 160 }
adamc@211 161
adamc@216 162 fun printClasses cs = CM.appi (fn (cn, {ground = km}) =>
adamc@216 163 (print (cn2s cn ^ ":");
adamc@216 164 KM.appi (fn (ck, _) => print (" " ^ ck2s ck)) km;
adamc@216 165 print "\n")) cs
adamc@216 166
adamc@2 167 type env = {
adamc@9 168 renameC : kind var' SM.map,
adamc@2 169 relC : (string * kind) list,
adamc@11 170 namedC : (string * kind * con option) IM.map,
adamc@9 171
adamc@157 172 datatypes : datatyp IM.map,
adamc@191 173 constructors : (datatype_kind * int * string list * con option * int) SM.map,
adamc@157 174
adamc@211 175 classes : class CM.map,
adamc@211 176
adamc@9 177 renameE : con var' SM.map,
adamc@9 178 relE : (string * con) list,
adamc@31 179 namedE : (string * con) IM.map,
adamc@31 180
adamc@31 181 renameSgn : (int * sgn) SM.map,
adamc@31 182 sgn : (string * sgn) IM.map,
adamc@31 183
adamc@31 184 renameStr : (int * sgn) SM.map,
adamc@31 185 str : (string * sgn) IM.map
adamc@2 186 }
adamc@2 187
adamc@2 188 val namedCounter = ref 0
adamc@2 189
adamc@109 190 fun newNamed () =
adamc@109 191 let
adamc@109 192 val r = !namedCounter
adamc@109 193 in
adamc@109 194 namedCounter := r + 1;
adamc@109 195 r
adamc@109 196 end
adamc@109 197
adamc@2 198 val empty = {
adamc@2 199 renameC = SM.empty,
adamc@2 200 relC = [],
adamc@9 201 namedC = IM.empty,
adamc@9 202
adamc@157 203 datatypes = IM.empty,
adamc@171 204 constructors = SM.empty,
adamc@157 205
adamc@211 206 classes = CM.empty,
adamc@211 207
adamc@9 208 renameE = SM.empty,
adamc@9 209 relE = [],
adamc@31 210 namedE = IM.empty,
adamc@31 211
adamc@31 212 renameSgn = SM.empty,
adamc@31 213 sgn = IM.empty,
adamc@31 214
adamc@31 215 renameStr = SM.empty,
adamc@31 216 str = IM.empty
adamc@2 217 }
adamc@2 218
adamc@211 219 fun liftClassKey ck =
adamc@211 220 case ck of
adamc@211 221 CkNamed _ => ck
adamc@211 222 | CkRel n => CkRel (n + 1)
adamc@211 223 | CkProj _ => ck
adamc@211 224
adamc@2 225 fun pushCRel (env : env) x k =
adamc@2 226 let
adamc@9 227 val renameC = SM.map (fn Rel' (n, k) => Rel' (n+1, k)
adamc@2 228 | x => x) (#renameC env)
adamc@2 229 in
adamc@9 230 {renameC = SM.insert (renameC, x, Rel' (0, k)),
adamc@2 231 relC = (x, k) :: #relC env,
adamc@13 232 namedC = IM.map (fn (x, k, co) => (x, k, Option.map lift co)) (#namedC env),
adamc@9 233
adamc@157 234 datatypes = #datatypes env,
adamc@171 235 constructors = #constructors env,
adamc@157 236
adamc@211 237 classes = CM.map (fn class => {
adamc@211 238 ground = KM.foldli (fn (ck, e, km) =>
adamc@211 239 KM.insert (km, liftClassKey ck, e))
adamc@211 240 KM.empty (#ground class)
adamc@211 241 })
adamc@211 242 (#classes env),
adamc@211 243
adamc@9 244 renameE = #renameE env,
adamc@13 245 relE = map (fn (x, c) => (x, lift c)) (#relE env),
adamc@31 246 namedE = IM.map (fn (x, c) => (x, lift c)) (#namedE env),
adamc@31 247
adamc@31 248 renameSgn = #renameSgn env,
adamc@31 249 sgn = #sgn env,
adamc@31 250
adamc@31 251 renameStr = #renameStr env,
adamc@31 252 str = #str env
adamc@31 253 }
adamc@2 254 end
adamc@2 255
adamc@2 256 fun lookupCRel (env : env) n =
adamc@2 257 (List.nth (#relC env, n))
adamc@2 258 handle Subscript => raise UnboundRel n
adamc@2 259
adamc@11 260 fun pushCNamedAs (env : env) x n k co =
adamc@9 261 {renameC = SM.insert (#renameC env, x, Named' (n, k)),
adamc@5 262 relC = #relC env,
adamc@11 263 namedC = IM.insert (#namedC env, n, (x, k, co)),
adamc@9 264
adamc@157 265 datatypes = #datatypes env,
adamc@171 266 constructors = #constructors env,
adamc@157 267
adamc@211 268 classes = #classes env,
adamc@211 269
adamc@9 270 renameE = #renameE env,
adamc@9 271 relE = #relE env,
adamc@31 272 namedE = #namedE env,
adamc@31 273
adamc@31 274 renameSgn = #renameSgn env,
adamc@31 275 sgn = #sgn env,
adamc@31 276
adamc@31 277 renameStr = #renameStr env,
adamc@31 278 str = #str env}
adamc@5 279
adamc@11 280 fun pushCNamed env x k co =
adamc@2 281 let
adamc@2 282 val n = !namedCounter
adamc@2 283 in
adamc@2 284 namedCounter := n + 1;
adamc@11 285 (pushCNamedAs env x n k co, n)
adamc@2 286 end
adamc@2 287
adamc@2 288 fun lookupCNamed (env : env) n =
adamc@2 289 case IM.find (#namedC env, n) of
adamc@2 290 NONE => raise UnboundNamed n
adamc@2 291 | SOME x => x
adamc@2 292
adamc@2 293 fun lookupC (env : env) x =
adamc@2 294 case SM.find (#renameC env, x) of
adamc@9 295 NONE => NotBound
adamc@9 296 | SOME (Rel' x) => Rel x
adamc@9 297 | SOME (Named' x) => Named x
adamc@9 298
adamc@191 299 fun pushDatatype (env : env) n xs xncs =
adamc@188 300 let
adamc@188 301 val dk = U.classifyDatatype xncs
adamc@188 302 in
adamc@188 303 {renameC = #renameC env,
adamc@188 304 relC = #relC env,
adamc@188 305 namedC = #namedC env,
adamc@157 306
adamc@188 307 datatypes = IM.insert (#datatypes env, n,
adamc@191 308 (xs, foldl (fn ((x, n, to), cons) =>
adamc@191 309 IM.insert (cons, n, (x, to))) IM.empty xncs)),
adamc@188 310 constructors = foldl (fn ((x, n', to), cmap) =>
adamc@191 311 SM.insert (cmap, x, (dk, n', xs, to, n)))
adamc@188 312 (#constructors env) xncs,
adamc@157 313
adamc@211 314 classes = #classes env,
adamc@211 315
adamc@188 316 renameE = #renameE env,
adamc@188 317 relE = #relE env,
adamc@188 318 namedE = #namedE env,
adamc@157 319
adamc@188 320 renameSgn = #renameSgn env,
adamc@188 321 sgn = #sgn env,
adamc@157 322
adamc@188 323 renameStr = #renameStr env,
adamc@188 324 str = #str env}
adamc@188 325 end
adamc@157 326
adamc@157 327 fun lookupDatatype (env : env) n =
adamc@157 328 case IM.find (#datatypes env, n) of
adamc@157 329 NONE => raise UnboundNamed n
adamc@157 330 | SOME x => x
adamc@157 331
adamc@191 332 fun lookupDatatypeConstructor (_, dt) n =
adamc@157 333 case IM.find (dt, n) of
adamc@157 334 NONE => raise UnboundNamed n
adamc@157 335 | SOME x => x
adamc@157 336
adamc@171 337 fun lookupConstructor (env : env) s = SM.find (#constructors env, s)
adamc@171 338
adamc@191 339 fun datatypeArgs (xs, _) = xs
adamc@191 340 fun constructors (_, dt) = IM.foldri (fn (n, (x, to), ls) => (x, n, to) :: ls) [] dt
adamc@157 341
adamc@211 342 fun pushClass (env : env) n =
adamc@211 343 {renameC = #renameC env,
adamc@211 344 relC = #relC env,
adamc@211 345 namedC = #namedC env,
adamc@211 346
adamc@211 347 datatypes = #datatypes env,
adamc@211 348 constructors = #constructors env,
adamc@211 349
adamc@211 350 classes = CM.insert (#classes env, ClNamed n, {ground = KM.empty}),
adamc@211 351
adamc@211 352 renameE = #renameE env,
adamc@211 353 relE = #relE env,
adamc@211 354 namedE = #namedE env,
adamc@211 355
adamc@211 356 renameSgn = #renameSgn env,
adamc@211 357 sgn = #sgn env,
adamc@211 358
adamc@211 359 renameStr = #renameStr env,
adamc@211 360 str = #str env}
adamc@211 361
adamc@211 362 fun class_name_in (c, _) =
adamc@211 363 case c of
adamc@211 364 CNamed n => SOME (ClNamed n)
adamc@211 365 | CModProj x => SOME (ClProj x)
adamc@228 366 | CUnif (_, _, _, ref (SOME c)) => class_name_in c
adamc@211 367 | _ => NONE
adamc@211 368
adamc@211 369 fun class_key_in (c, _) =
adamc@211 370 case c of
adamc@211 371 CRel n => SOME (CkRel n)
adamc@211 372 | CNamed n => SOME (CkNamed n)
adamc@211 373 | CModProj x => SOME (CkProj x)
adamc@228 374 | CUnif (_, _, _, ref (SOME c)) => class_key_in c
adamc@211 375 | _ => NONE
adamc@211 376
adamc@211 377 fun class_pair_in (c, _) =
adamc@211 378 case c of
adamc@211 379 CApp (f, x) =>
adamc@211 380 (case (class_name_in f, class_key_in x) of
adamc@211 381 (SOME f, SOME x) => SOME (f, x)
adamc@211 382 | _ => NONE)
adamc@211 383 | _ => NONE
adamc@211 384
adamc@211 385 fun resolveClass (env : env) c =
adamc@211 386 case class_pair_in c of
adamc@211 387 SOME (f, x) =>
adamc@211 388 (case CM.find (#classes env, f) of
adamc@211 389 NONE => NONE
adamc@211 390 | SOME class =>
adamc@211 391 case KM.find (#ground class, x) of
adamc@211 392 NONE => NONE
adamc@211 393 | SOME e => SOME e)
adamc@211 394 | _ => NONE
adamc@211 395
adamc@9 396 fun pushERel (env : env) x t =
adamc@9 397 let
adamc@9 398 val renameE = SM.map (fn Rel' (n, t) => Rel' (n+1, t)
adamc@9 399 | x => x) (#renameE env)
adamc@211 400
adamc@211 401 val classes = CM.map (fn class => {
adamc@211 402 ground = KM.map liftExp (#ground class)
adamc@211 403 }) (#classes env)
adamc@211 404 val classes = case class_pair_in t of
adamc@211 405 NONE => classes
adamc@211 406 | SOME (f, x) =>
adamc@211 407 let
adamc@211 408 val class = Option.getOpt (CM.find (classes, f), empty_class)
adamc@211 409 val class = {
adamc@211 410 ground = KM.insert (#ground class, x, (ERel 0, #2 t))
adamc@211 411 }
adamc@211 412 in
adamc@211 413 CM.insert (classes, f, class)
adamc@211 414 end
adamc@9 415 in
adamc@9 416 {renameC = #renameC env,
adamc@9 417 relC = #relC env,
adamc@9 418 namedC = #namedC env,
adamc@9 419
adamc@157 420 datatypes = #datatypes env,
adamc@171 421 constructors = #constructors env,
adamc@157 422
adamc@211 423 classes = classes,
adamc@211 424
adamc@9 425 renameE = SM.insert (renameE, x, Rel' (0, t)),
adamc@9 426 relE = (x, t) :: #relE env,
adamc@31 427 namedE = #namedE env,
adamc@31 428
adamc@31 429 renameSgn = #renameSgn env,
adamc@31 430 sgn = #sgn env,
adamc@31 431
adamc@31 432 renameStr = #renameStr env,
adamc@31 433 str = #str env}
adamc@9 434 end
adamc@9 435
adamc@9 436 fun lookupERel (env : env) n =
adamc@9 437 (List.nth (#relE env, n))
adamc@9 438 handle Subscript => raise UnboundRel n
adamc@9 439
adamc@9 440 fun pushENamedAs (env : env) x n t =
adamc@211 441 let
adamc@211 442 val classes = #classes env
adamc@211 443 val classes = case class_pair_in t of
adamc@211 444 NONE => classes
adamc@211 445 | SOME (f, x) =>
adamc@211 446 let
adamc@211 447 val class = Option.getOpt (CM.find (classes, f), empty_class)
adamc@211 448 val class = {
adamc@211 449 ground = KM.insert (#ground class, x, (ENamed n, #2 t))
adamc@211 450 }
adamc@211 451 in
adamc@211 452 CM.insert (classes, f, class)
adamc@211 453 end
adamc@211 454 in
adamc@211 455 {renameC = #renameC env,
adamc@211 456 relC = #relC env,
adamc@211 457 namedC = #namedC env,
adamc@9 458
adamc@211 459 datatypes = #datatypes env,
adamc@211 460 constructors = #constructors env,
adamc@157 461
adamc@211 462 classes = classes,
adamc@31 463
adamc@211 464 renameE = SM.insert (#renameE env, x, Named' (n, t)),
adamc@211 465 relE = #relE env,
adamc@211 466 namedE = IM.insert (#namedE env, n, (x, t)),
adamc@211 467
adamc@211 468 renameSgn = #renameSgn env,
adamc@211 469 sgn = #sgn env,
adamc@211 470
adamc@211 471 renameStr = #renameStr env,
adamc@211 472 str = #str env}
adamc@211 473 end
adamc@9 474
adamc@9 475 fun pushENamed env x t =
adamc@9 476 let
adamc@9 477 val n = !namedCounter
adamc@9 478 in
adamc@9 479 namedCounter := n + 1;
adamc@9 480 (pushENamedAs env x n t, n)
adamc@9 481 end
adamc@9 482
adamc@9 483 fun lookupENamed (env : env) n =
adamc@9 484 case IM.find (#namedE env, n) of
adamc@9 485 NONE => raise UnboundNamed n
adamc@9 486 | SOME x => x
adamc@9 487
adamc@9 488 fun lookupE (env : env) x =
adamc@9 489 case SM.find (#renameE env, x) of
adamc@9 490 NONE => NotBound
adamc@9 491 | SOME (Rel' x) => Rel x
adamc@9 492 | SOME (Named' x) => Named x
adamc@2 493
adamc@31 494 fun pushSgnNamedAs (env : env) x n sgis =
adamc@31 495 {renameC = #renameC env,
adamc@31 496 relC = #relC env,
adamc@31 497 namedC = #namedC env,
adamc@31 498
adamc@157 499 datatypes = #datatypes env,
adamc@171 500 constructors = #constructors env,
adamc@157 501
adamc@211 502 classes = #classes env,
adamc@211 503
adamc@31 504 renameE = #renameE env,
adamc@31 505 relE = #relE env,
adamc@31 506 namedE = #namedE env,
adamc@31 507
adamc@31 508 renameSgn = SM.insert (#renameSgn env, x, (n, sgis)),
adamc@31 509 sgn = IM.insert (#sgn env, n, (x, sgis)),
adamc@31 510
adamc@31 511 renameStr = #renameStr env,
adamc@31 512 str = #str env}
adamc@31 513
adamc@31 514 fun pushSgnNamed env x sgis =
adamc@31 515 let
adamc@31 516 val n = !namedCounter
adamc@31 517 in
adamc@31 518 namedCounter := n + 1;
adamc@31 519 (pushSgnNamedAs env x n sgis, n)
adamc@31 520 end
adamc@31 521
adamc@31 522 fun lookupSgnNamed (env : env) n =
adamc@31 523 case IM.find (#sgn env, n) of
adamc@31 524 NONE => raise UnboundNamed n
adamc@31 525 | SOME x => x
adamc@31 526
adamc@31 527 fun lookupSgn (env : env) x = SM.find (#renameSgn env, x)
adamc@31 528
adamc@31 529 fun lookupStrNamed (env : env) n =
adamc@31 530 case IM.find (#str env, n) of
adamc@31 531 NONE => raise UnboundNamed n
adamc@31 532 | SOME x => x
adamc@31 533
adamc@31 534 fun lookupStr (env : env) x = SM.find (#renameStr env, x)
adamc@31 535
adamc@203 536
adamc@216 537 fun sgiSeek (sgi, (sgns, strs, cons)) =
adamc@216 538 case sgi of
adamc@216 539 SgiConAbs (x, n, _) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 540 | SgiCon (x, n, _, _) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 541 | SgiDatatype (x, n, _, _) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 542 | SgiDatatypeImp (x, n, _, _, _, _, _) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 543 | SgiVal _ => (sgns, strs, cons)
adamc@216 544 | SgiSgn (x, n, _) => (IM.insert (sgns, n, x), strs, cons)
adamc@216 545 | SgiStr (x, n, _) => (sgns, IM.insert (strs, n, x), cons)
adamc@216 546 | SgiConstraint _ => (sgns, strs, cons)
adamc@216 547 | SgiTable _ => (sgns, strs, cons)
adamc@216 548 | SgiClassAbs (x, n) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 549 | SgiClass (x, n, _) => (sgns, strs, IM.insert (cons, n, x))
adamc@216 550
adamc@34 551 fun sgnSeek f sgis =
adamc@34 552 let
adamc@59 553 fun seek (sgis, sgns, strs, cons) =
adamc@34 554 case sgis of
adamc@34 555 [] => NONE
adamc@34 556 | (sgi, _) :: sgis =>
adamc@34 557 case f sgi of
adamc@158 558 SOME v =>
adamc@158 559 let
adamc@158 560 val cons =
adamc@158 561 case sgi of
adamc@191 562 SgiDatatype (x, n, _, _) => IM.insert (cons, n, x)
adamc@191 563 | SgiDatatypeImp (x, n, _, _, _, _, _) => IM.insert (cons, n, x)
adamc@158 564 | _ => cons
adamc@158 565 in
adamc@158 566 SOME (v, (sgns, strs, cons))
adamc@158 567 end
adamc@88 568 | NONE =>
adamc@216 569 let
adamc@216 570 val (sgns, strs, cons) = sgiSeek (sgi, (sgns, strs, cons))
adamc@216 571 in
adamc@216 572 seek (sgis, sgns, strs, cons)
adamc@216 573 end
adamc@34 574 in
adamc@59 575 seek (sgis, IM.empty, IM.empty, IM.empty)
adamc@34 576 end
adamc@34 577
adamc@34 578 fun id x = x
adamc@34 579
adamc@34 580 fun unravelStr (str, _) =
adamc@34 581 case str of
adamc@34 582 StrVar x => (x, [])
adamc@34 583 | StrProj (str, m) =>
adamc@34 584 let
adamc@34 585 val (x, ms) = unravelStr str
adamc@34 586 in
adamc@34 587 (x, ms @ [m])
adamc@34 588 end
adamc@34 589 | _ => raise Fail "unravelStr"
adamc@34 590
adamc@59 591 fun sgnS_con (str, (sgns, strs, cons)) c =
adamc@34 592 case c of
adamc@34 593 CModProj (m1, ms, x) =>
adamc@34 594 (case IM.find (strs, m1) of
adamc@34 595 NONE => c
adamc@34 596 | SOME m1x =>
adamc@34 597 let
adamc@34 598 val (m1, ms') = unravelStr str
adamc@34 599 in
adamc@34 600 CModProj (m1, ms' @ m1x :: ms, x)
adamc@34 601 end)
adamc@34 602 | CNamed n =>
adamc@34 603 (case IM.find (cons, n) of
adamc@34 604 NONE => c
adamc@34 605 | SOME nx =>
adamc@34 606 let
adamc@34 607 val (m1, ms) = unravelStr str
adamc@34 608 in
adamc@34 609 CModProj (m1, ms, nx)
adamc@34 610 end)
adamc@34 611 | _ => c
adamc@34 612
adamc@216 613 fun sgnS_con' (m1, ms', (sgns, strs, cons)) c =
adamc@216 614 case c of
adamc@216 615 CModProj (m1, ms, x) =>
adamc@216 616 (case IM.find (strs, m1) of
adamc@216 617 NONE => c
adamc@216 618 | SOME m1x => CModProj (m1, ms' @ m1x :: ms, x))
adamc@216 619 | CNamed n =>
adamc@216 620 (case IM.find (cons, n) of
adamc@216 621 NONE => c
adamc@216 622 | SOME nx => CModProj (m1, ms', nx))
adamc@216 623 | _ => c
adamc@216 624
adamc@59 625 fun sgnS_sgn (str, (sgns, strs, cons)) sgn =
adamc@59 626 case sgn of
adamc@59 627 SgnProj (m1, ms, x) =>
adamc@59 628 (case IM.find (strs, m1) of
adamc@59 629 NONE => sgn
adamc@59 630 | SOME m1x =>
adamc@59 631 let
adamc@59 632 val (m1, ms') = unravelStr str
adamc@59 633 in
adamc@59 634 SgnProj (m1, ms' @ m1x :: ms, x)
adamc@59 635 end)
adamc@59 636 | SgnVar n =>
adamc@59 637 (case IM.find (sgns, n) of
adamc@59 638 NONE => sgn
adamc@59 639 | SOME nx =>
adamc@59 640 let
adamc@59 641 val (m1, ms) = unravelStr str
adamc@59 642 in
adamc@59 643 SgnProj (m1, ms, nx)
adamc@59 644 end)
adamc@59 645 | _ => sgn
adamc@59 646
adamc@59 647 fun sgnSubSgn x =
adamc@34 648 ElabUtil.Sgn.map {kind = id,
adamc@59 649 con = sgnS_con x,
adamc@34 650 sgn_item = id,
adamc@59 651 sgn = sgnS_sgn x}
adamc@34 652
adamc@211 653
adamc@211 654
adamc@211 655 and projectSgn env {sgn, str, field} =
adamc@211 656 case #1 (hnormSgn env sgn) of
adamc@211 657 SgnConst sgis =>
adamc@211 658 (case sgnSeek (fn SgiSgn (x, _, sgn) => if x = field then SOME sgn else NONE | _ => NONE) sgis of
adamc@211 659 NONE => NONE
adamc@211 660 | SOME (sgn, subs) => SOME (sgnSubSgn (str, subs) sgn))
adamc@211 661 | SgnError => SOME (SgnError, ErrorMsg.dummySpan)
adamc@211 662 | _ => NONE
adamc@211 663
adamc@211 664 and hnormSgn env (all as (sgn, loc)) =
adamc@34 665 case sgn of
adamc@42 666 SgnError => all
adamc@42 667 | SgnVar n => hnormSgn env (#2 (lookupSgnNamed env n))
adamc@42 668 | SgnConst _ => all
adamc@42 669 | SgnFun _ => all
adamc@59 670 | SgnProj (m, ms, x) =>
adamc@59 671 let
adamc@59 672 val (_, sgn) = lookupStrNamed env m
adamc@59 673 in
adamc@59 674 case projectSgn env {str = foldl (fn (m, str) => (StrProj (str, m), loc)) (StrVar m, loc) ms,
adamc@59 675 sgn = sgn,
adamc@59 676 field = x} of
adamc@59 677 NONE => raise Fail "ElabEnv.hnormSgn: projectSgn failed"
adamc@59 678 | SOME sgn => sgn
adamc@59 679 end
adamc@42 680 | SgnWhere (sgn, x, c) =>
adamc@42 681 case #1 (hnormSgn env sgn) of
adamc@42 682 SgnError => (SgnError, loc)
adamc@42 683 | SgnConst sgis =>
adamc@42 684 let
adamc@42 685 fun traverse (pre, post) =
adamc@42 686 case post of
adamc@42 687 [] => raise Fail "ElabEnv.hnormSgn: Can't reduce 'where' [1]"
adamc@42 688 | (sgi as (SgiConAbs (x', n, k), loc)) :: rest =>
adamc@42 689 if x = x' then
adamc@42 690 List.revAppend (pre, (SgiCon (x', n, k, c), loc) :: rest)
adamc@42 691 else
adamc@42 692 traverse (sgi :: pre, rest)
adamc@42 693 | sgi :: rest => traverse (sgi :: pre, rest)
adamc@42 694
adamc@42 695 val sgis = traverse ([], sgis)
adamc@42 696 in
adamc@42 697 (SgnConst sgis, loc)
adamc@42 698 end
adamc@42 699 | _ => raise Fail "ElabEnv.hnormSgn: Can't reduce 'where' [2]"
adamc@42 700
adamc@211 701 fun enrichClasses env classes (m1, ms) sgn =
adamc@59 702 case #1 (hnormSgn env sgn) of
adamc@59 703 SgnConst sgis =>
adamc@211 704 let
adamc@218 705 val (classes, _, _, _) =
adamc@218 706 foldl (fn (sgi, (classes, newClasses, fmap, env)) =>
adamc@211 707 let
adamc@211 708 fun found (x, n) =
adamc@211 709 (CM.insert (classes,
adamc@211 710 ClProj (m1, ms, x),
adamc@211 711 empty_class),
adamc@216 712 IM.insert (newClasses, n, x),
adamc@218 713 sgiSeek (#1 sgi, fmap),
adamc@218 714 env)
adamc@216 715
adamc@218 716 fun default () = (classes, newClasses, sgiSeek (#1 sgi, fmap), env)
adamc@211 717 in
adamc@211 718 case #1 sgi of
adamc@217 719 SgiStr (x, _, sgn) =>
adamc@217 720 (enrichClasses env classes (m1, ms @ [x]) sgn,
adamc@217 721 newClasses,
adamc@218 722 sgiSeek (#1 sgi, fmap),
adamc@218 723 env)
adamc@218 724 | SgiSgn (x, n, sgn) =>
adamc@218 725 (classes,
adamc@218 726 newClasses,
adamc@218 727 fmap,
adamc@218 728 pushSgnNamedAs env x n sgn)
adamc@218 729
adamc@217 730 | SgiClassAbs xn => found xn
adamc@211 731 | SgiClass (x, n, _) => found (x, n)
adamc@216 732 | SgiVal (x, n, (CApp ((CNamed f, _), a), _)) =>
adamc@216 733 (case IM.find (newClasses, f) of
adamc@216 734 NONE => default ()
adamc@216 735 | SOME fx =>
adamc@216 736 case class_key_in (sgnS_con' (m1, ms, fmap) (#1 a), #2 a) of
adamc@216 737 NONE => default ()
adamc@216 738 | SOME ck =>
adamc@216 739 let
adamc@216 740 val cn = ClProj (m1, ms, fx)
adamc@216 741 val class = Option.getOpt (CM.find (classes, cn), empty_class)
adamc@216 742 val class = {
adamc@216 743 ground = KM.insert (#ground class, ck,
adamc@216 744 (EModProj (m1, ms, x), #2 sgn))
adamc@216 745 }
adamc@216 746
adamc@216 747 in
adamc@216 748 (CM.insert (classes, cn, class),
adamc@216 749 newClasses,
adamc@218 750 fmap,
adamc@218 751 env)
adamc@216 752 end)
adamc@217 753 | SgiVal _ => default ()
adamc@216 754 | _ => default ()
adamc@211 755 end)
adamc@218 756 (classes, IM.empty, (IM.empty, IM.empty, IM.empty), env) sgis
adamc@211 757 in
adamc@211 758 classes
adamc@211 759 end
adamc@211 760 | _ => classes
adamc@211 761
adamc@211 762 fun pushStrNamedAs (env : env) x n sgn =
adamc@211 763 {renameC = #renameC env,
adamc@211 764 relC = #relC env,
adamc@211 765 namedC = #namedC env,
adamc@211 766
adamc@211 767 datatypes = #datatypes env,
adamc@211 768 constructors = #constructors env,
adamc@211 769
adamc@211 770 classes = enrichClasses env (#classes env) (n, []) sgn,
adamc@211 771
adamc@211 772 renameE = #renameE env,
adamc@211 773 relE = #relE env,
adamc@211 774 namedE = #namedE env,
adamc@211 775
adamc@211 776 renameSgn = #renameSgn env,
adamc@211 777 sgn = #sgn env,
adamc@211 778
adamc@211 779 renameStr = SM.insert (#renameStr env, x, (n, sgn)),
adamc@211 780 str = IM.insert (#str env, n, (x, sgn))}
adamc@211 781
adamc@211 782 fun pushStrNamed env x sgn =
adamc@211 783 let
adamc@211 784 val n = !namedCounter
adamc@211 785 in
adamc@211 786 namedCounter := n + 1;
adamc@211 787 (pushStrNamedAs env x n sgn, n)
adamc@211 788 end
adamc@211 789
adamc@211 790 fun sgiBinds env (sgi, loc) =
adamc@211 791 case sgi of
adamc@211 792 SgiConAbs (x, n, k) => pushCNamedAs env x n k NONE
adamc@211 793 | SgiCon (x, n, k, c) => pushCNamedAs env x n k (SOME c)
adamc@211 794 | SgiDatatype (x, n, xs, xncs) =>
adamc@211 795 let
adamc@211 796 val env = pushCNamedAs env x n (KType, loc) NONE
adamc@211 797 in
adamc@211 798 foldl (fn ((x', n', to), env) =>
adamc@211 799 let
adamc@211 800 val t =
adamc@211 801 case to of
adamc@211 802 NONE => (CNamed n, loc)
adamc@211 803 | SOME t => (TFun (t, (CNamed n, loc)), loc)
adamc@211 804
adamc@211 805 val k = (KType, loc)
adamc@211 806 val t = foldr (fn (x, t) => (TCFun (Explicit, x, k, t), loc)) t xs
adamc@211 807 in
adamc@211 808 pushENamedAs env x' n' t
adamc@211 809 end)
adamc@211 810 env xncs
adamc@211 811 end
adamc@211 812 | SgiDatatypeImp (x, n, m1, ms, x', xs, xncs) =>
adamc@211 813 let
adamc@211 814 val env = pushCNamedAs env x n (KType, loc) (SOME (CModProj (m1, ms, x'), loc))
adamc@211 815 in
adamc@211 816 foldl (fn ((x', n', to), env) =>
adamc@211 817 let
adamc@211 818 val t =
adamc@211 819 case to of
adamc@211 820 NONE => (CNamed n, loc)
adamc@211 821 | SOME t => (TFun (t, (CNamed n, loc)), loc)
adamc@211 822
adamc@211 823 val k = (KType, loc)
adamc@211 824 val t = foldr (fn (x, t) => (TCFun (Explicit, x, k, t), loc)) t xs
adamc@211 825 in
adamc@211 826 pushENamedAs env x' n' t
adamc@211 827 end)
adamc@211 828 env xncs
adamc@211 829 end
adamc@211 830 | SgiVal (x, n, t) => pushENamedAs env x n t
adamc@211 831 | SgiStr (x, n, sgn) => pushStrNamedAs env x n sgn
adamc@211 832 | SgiSgn (x, n, sgn) => pushSgnNamedAs env x n sgn
adamc@211 833 | SgiConstraint _ => env
adamc@211 834
adamc@211 835 | SgiTable (tn, x, n, c) =>
adamc@211 836 let
adamc@211 837 val t = (CApp ((CModProj (tn, [], "table"), loc), c), loc)
adamc@211 838 in
adamc@211 839 pushENamedAs env x n t
adamc@211 840 end
adamc@211 841
adamc@211 842 | SgiClassAbs (x, n) => pushCNamedAs env x n (KArrow ((KType, loc), (KType, loc)), loc) NONE
adamc@211 843 | SgiClass (x, n, c) => pushCNamedAs env x n (KArrow ((KType, loc), (KType, loc)), loc) (SOME c)
adamc@211 844
adamc@211 845
adamc@211 846 fun sgnSubCon x =
adamc@211 847 ElabUtil.Con.map {kind = id,
adamc@211 848 con = sgnS_con x}
adamc@59 849
adamc@59 850 fun projectStr env {sgn, str, field} =
adamc@59 851 case #1 (hnormSgn env sgn) of
adamc@59 852 SgnConst sgis =>
adamc@59 853 (case sgnSeek (fn SgiStr (x, _, sgn) => if x = field then SOME sgn else NONE | _ => NONE) sgis of
adamc@59 854 NONE => NONE
adamc@59 855 | SOME (sgn, subs) => SOME (sgnSubSgn (str, subs) sgn))
adamc@59 856 | SgnError => SOME (SgnError, ErrorMsg.dummySpan)
adamc@59 857 | _ => NONE
adamc@59 858
adamc@158 859 fun chaseMpath env (n, ms) =
adamc@158 860 let
adamc@158 861 val (_, sgn) = lookupStrNamed env n
adamc@158 862 in
adamc@158 863 foldl (fn (m, (str, sgn)) =>
adamc@158 864 case projectStr env {sgn = sgn, str = str, field = m} of
adamc@158 865 NONE => raise Fail "kindof: Unknown substructure"
adamc@158 866 | SOME sgn => ((StrProj (str, m), #2 sgn), sgn))
adamc@158 867 ((StrVar n, #2 sgn), sgn) ms
adamc@158 868 end
adamc@158 869
adamc@42 870 fun projectCon env {sgn, str, field} =
adamc@42 871 case #1 (hnormSgn env sgn) of
adamc@34 872 SgnConst sgis =>
adamc@34 873 (case sgnSeek (fn SgiConAbs (x, _, k) => if x = field then SOME (k, NONE) else NONE
adamc@34 874 | SgiCon (x, _, k, c) => if x = field then SOME (k, SOME c) else NONE
adamc@191 875 | SgiDatatype (x, _, _, _) => if x = field then SOME ((KType, #2 sgn), NONE) else NONE
adamc@191 876 | SgiDatatypeImp (x, _, m1, ms, x', _, _) =>
adamc@158 877 if x = field then
adamc@158 878 SOME ((KType, #2 sgn), SOME (CModProj (m1, ms, x'), #2 sgn))
adamc@158 879 else
adamc@158 880 NONE
adamc@216 881 | SgiClassAbs (x, _) => if x = field then
adamc@216 882 SOME ((KArrow ((KType, #2 sgn), (KType, #2 sgn)), #2 sgn), NONE)
adamc@216 883 else
adamc@216 884 NONE
adamc@216 885 | SgiClass (x, _, c) => if x = field then
adamc@216 886 SOME ((KArrow ((KType, #2 sgn), (KType, #2 sgn)), #2 sgn), SOME c)
adamc@216 887 else
adamc@216 888 NONE
adamc@34 889 | _ => NONE) sgis of
adamc@34 890 NONE => NONE
adamc@34 891 | SOME ((k, co), subs) => SOME (k, Option.map (sgnSubCon (str, subs)) co))
adamc@34 892 | SgnError => SOME ((KError, ErrorMsg.dummySpan), SOME (CError, ErrorMsg.dummySpan))
adamc@42 893 | _ => NONE
adamc@34 894
adamc@157 895 fun projectDatatype env {sgn, str, field} =
adamc@157 896 case #1 (hnormSgn env sgn) of
adamc@157 897 SgnConst sgis =>
adamc@191 898 (case sgnSeek (fn SgiDatatype (x, _, xs, xncs) => if x = field then SOME (xs, xncs) else NONE
adamc@191 899 | SgiDatatypeImp (x, _, _, _, _, xs, xncs) => if x = field then SOME (xs, xncs) else NONE
adamc@157 900 | _ => NONE) sgis of
adamc@157 901 NONE => NONE
adamc@191 902 | SOME ((xs, xncs), subs) => SOME (xs,
adamc@191 903 map (fn (x, n, to) => (x, n, Option.map (sgnSubCon (str, subs)) to)) xncs))
adamc@157 904 | _ => NONE
adamc@157 905
adamc@174 906 fun projectConstructor env {sgn, str, field} =
adamc@174 907 case #1 (hnormSgn env sgn) of
adamc@174 908 SgnConst sgis =>
adamc@174 909 let
adamc@191 910 fun consider (n, xs, xncs) =
adamc@174 911 ListUtil.search (fn (x, n', to) =>
adamc@174 912 if x <> field then
adamc@174 913 NONE
adamc@174 914 else
adamc@191 915 SOME (U.classifyDatatype xncs, n', xs, to, (CNamed n, #2 str))) xncs
adamc@174 916 in
adamc@191 917 case sgnSeek (fn SgiDatatype (_, n, xs, xncs) => consider (n, xs, xncs)
adamc@191 918 | SgiDatatypeImp (_, n, _, _, _, xs, xncs) => consider (n, xs, xncs)
adamc@174 919 | _ => NONE) sgis of
adamc@174 920 NONE => NONE
adamc@191 921 | SOME ((dk, n, xs, to, t), subs) => SOME (dk, n, xs, Option.map (sgnSubCon (str, subs)) to,
adamc@191 922 sgnSubCon (str, subs) t)
adamc@174 923 end
adamc@174 924 | _ => NONE
adamc@174 925
adamc@42 926 fun projectVal env {sgn, str, field} =
adamc@42 927 case #1 (hnormSgn env sgn) of
adamc@34 928 SgnConst sgis =>
adamc@162 929 let
adamc@191 930 fun seek (n, xs, xncs) =
adamc@162 931 ListUtil.search (fn (x, _, to) =>
adamc@162 932 if x = field then
adamc@191 933 SOME (let
adamc@191 934 val t =
adamc@191 935 case to of
adamc@191 936 NONE => (CNamed n, #2 sgn)
adamc@191 937 | SOME t => (TFun (t, (CNamed n, #2 sgn)), #2 sgn)
adamc@191 938 val k = (KType, #2 sgn)
adamc@191 939 in
adamc@191 940 foldr (fn (x, t) => (TCFun (Explicit, x, k, t), #2 sgn))
adamc@191 941 t xs
adamc@191 942 end)
adamc@162 943 else
adamc@162 944 NONE) xncs
adamc@162 945 in
adamc@162 946 case sgnSeek (fn SgiVal (x, _, c) => if x = field then SOME c else NONE
adamc@191 947 | SgiDatatype (_, n, xs, xncs) => seek (n, xs, xncs)
adamc@191 948 | SgiDatatypeImp (_, n, _, _, _, xs, xncs) => seek (n, xs, xncs)
adamc@162 949 | _ => NONE) sgis of
adamc@162 950 NONE => NONE
adamc@162 951 | SOME (c, subs) => SOME (sgnSubCon (str, subs) c)
adamc@162 952 end
adamc@34 953 | SgnError => SOME (CError, ErrorMsg.dummySpan)
adamc@42 954 | _ => NONE
adamc@34 955
adamc@88 956 fun sgnSeekConstraints (str, sgis) =
adamc@88 957 let
adamc@88 958 fun seek (sgis, sgns, strs, cons, acc) =
adamc@88 959 case sgis of
adamc@88 960 [] => acc
adamc@88 961 | (sgi, _) :: sgis =>
adamc@88 962 case sgi of
adamc@88 963 SgiConstraint (c1, c2) =>
adamc@88 964 let
adamc@88 965 val sub = sgnSubCon (str, (sgns, strs, cons))
adamc@88 966 in
adamc@88 967 seek (sgis, sgns, strs, cons, (sub c1, sub c2) :: acc)
adamc@88 968 end
adamc@88 969 | SgiConAbs (x, n, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@88 970 | SgiCon (x, n, _, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@191 971 | SgiDatatype (x, n, _, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@191 972 | SgiDatatypeImp (x, n, _, _, _, _, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@88 973 | SgiVal _ => seek (sgis, sgns, strs, cons, acc)
adamc@88 974 | SgiSgn (x, n, _) => seek (sgis, IM.insert (sgns, n, x), strs, cons, acc)
adamc@88 975 | SgiStr (x, n, _) => seek (sgis, sgns, IM.insert (strs, n, x), cons, acc)
adamc@203 976 | SgiTable _ => seek (sgis, sgns, strs, cons, acc)
adamc@211 977 | SgiClassAbs (x, n) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@211 978 | SgiClass (x, n, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@88 979 in
adamc@88 980 seek (sgis, IM.empty, IM.empty, IM.empty, [])
adamc@88 981 end
adamc@88 982
adamc@88 983 fun projectConstraints env {sgn, str} =
adamc@88 984 case #1 (hnormSgn env sgn) of
adamc@88 985 SgnConst sgis => SOME (sgnSeekConstraints (str, sgis))
adamc@88 986 | SgnError => SOME []
adamc@88 987 | _ => NONE
adamc@34 988
adamc@157 989 fun declBinds env (d, loc) =
adamc@157 990 case d of
adamc@157 991 DCon (x, n, k, c) => pushCNamedAs env x n k (SOME c)
adamc@191 992 | DDatatype (x, n, xs, xncs) =>
adamc@157 993 let
adamc@157 994 val env = pushCNamedAs env x n (KType, loc) NONE
adamc@191 995 val env = pushDatatype env n xs xncs
adamc@157 996 in
adamc@191 997 foldl (fn ((x', n', to), env) =>
adamc@191 998 let
adamc@191 999 val t =
adamc@191 1000 case to of
adamc@191 1001 NONE => (CNamed n, loc)
adamc@191 1002 | SOME t => (TFun (t, (CNamed n, loc)), loc)
adamc@191 1003 val k = (KType, loc)
adamc@191 1004 val t = foldr (fn (x, t) => (TCFun (Explicit, x, k, t), loc)) t xs
adamc@191 1005 in
adamc@191 1006 pushENamedAs env x' n' t
adamc@191 1007 end)
adamc@191 1008 env xncs
adamc@157 1009 end
adamc@191 1010 | DDatatypeImp (x, n, m, ms, x', xs, xncs) =>
adamc@157 1011 let
adamc@157 1012 val t = (CModProj (m, ms, x'), loc)
adamc@157 1013 val env = pushCNamedAs env x n (KType, loc) (SOME t)
adamc@191 1014 val env = pushDatatype env n xs xncs
adamc@157 1015
adamc@157 1016 val t = (CNamed n, loc)
adamc@157 1017 in
adamc@191 1018 foldl (fn ((x', n', to), env) =>
adamc@191 1019 let
adamc@191 1020 val t =
adamc@191 1021 case to of
adamc@191 1022 NONE => (CNamed n, loc)
adamc@191 1023 | SOME t => (TFun (t, (CNamed n, loc)), loc)
adamc@191 1024 val k = (KType, loc)
adamc@191 1025 val t = foldr (fn (x, t) => (TCFun (Explicit, x, k, t), loc)) t xs
adamc@191 1026 in
adamc@191 1027 pushENamedAs env x' n' t
adamc@191 1028 end)
adamc@191 1029 env xncs
adamc@157 1030 end
adamc@157 1031 | DVal (x, n, t, _) => pushENamedAs env x n t
adamc@157 1032 | DValRec vis => foldl (fn ((x, n, t, _), env) => pushENamedAs env x n t) env vis
adamc@157 1033 | DSgn (x, n, sgn) => pushSgnNamedAs env x n sgn
adamc@157 1034 | DStr (x, n, sgn, _) => pushStrNamedAs env x n sgn
adamc@157 1035 | DFfiStr (x, n, sgn) => pushStrNamedAs env x n sgn
adamc@157 1036 | DConstraint _ => env
adamc@157 1037 | DExport _ => env
adamc@205 1038 | DTable (tn, x, n, c) =>
adamc@205 1039 let
adamc@205 1040 val t = (CApp ((CModProj (tn, [], "table"), loc), c), loc)
adamc@205 1041 in
adamc@205 1042 pushENamedAs env x n t
adamc@205 1043 end
adamc@213 1044 | DClass (x, n, c) =>
adamc@213 1045 let
adamc@213 1046 val k = (KArrow ((KType, loc), (KType, loc)), loc)
adamc@213 1047 val env = pushCNamedAs env x n k (SOME c)
adamc@213 1048 in
adamc@213 1049 pushClass env n
adamc@213 1050 end
adamc@157 1051
adamc@2 1052 end