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Add datatype import constructor annotations; datatypes through explify
author Adam Chlipala <adamc@hcoop.net>
date Tue, 29 Jul 2008 12:30:04 -0400
parents b4b70de488e9
children c7a6e6dbc318
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@13 64
adamc@13 65 (* Back to environments *)
adamc@13 66
adamc@9 67 datatype 'a var' =
adamc@9 68 Rel' of int * 'a
adamc@9 69 | Named' of int * 'a
adamc@2 70
adamc@9 71 datatype 'a var =
adamc@9 72 NotBound
adamc@9 73 | Rel of int * 'a
adamc@9 74 | Named of int * 'a
adamc@2 75
adamc@157 76 type datatyp = (string * con option) IM.map
adamc@157 77
adamc@2 78 type env = {
adamc@9 79 renameC : kind var' SM.map,
adamc@2 80 relC : (string * kind) list,
adamc@11 81 namedC : (string * kind * con option) IM.map,
adamc@9 82
adamc@157 83 datatypes : datatyp IM.map,
adamc@157 84
adamc@9 85 renameE : con var' SM.map,
adamc@9 86 relE : (string * con) list,
adamc@31 87 namedE : (string * con) IM.map,
adamc@31 88
adamc@31 89 renameSgn : (int * sgn) SM.map,
adamc@31 90 sgn : (string * sgn) IM.map,
adamc@31 91
adamc@31 92 renameStr : (int * sgn) SM.map,
adamc@31 93 str : (string * sgn) IM.map
adamc@2 94 }
adamc@2 95
adamc@2 96 val namedCounter = ref 0
adamc@2 97
adamc@109 98 fun newNamed () =
adamc@109 99 let
adamc@109 100 val r = !namedCounter
adamc@109 101 in
adamc@109 102 namedCounter := r + 1;
adamc@109 103 r
adamc@109 104 end
adamc@109 105
adamc@2 106 val empty = {
adamc@2 107 renameC = SM.empty,
adamc@2 108 relC = [],
adamc@9 109 namedC = IM.empty,
adamc@9 110
adamc@157 111 datatypes = IM.empty,
adamc@157 112
adamc@9 113 renameE = SM.empty,
adamc@9 114 relE = [],
adamc@31 115 namedE = IM.empty,
adamc@31 116
adamc@31 117 renameSgn = SM.empty,
adamc@31 118 sgn = IM.empty,
adamc@31 119
adamc@31 120 renameStr = SM.empty,
adamc@31 121 str = IM.empty
adamc@2 122 }
adamc@2 123
adamc@2 124 fun pushCRel (env : env) x k =
adamc@2 125 let
adamc@9 126 val renameC = SM.map (fn Rel' (n, k) => Rel' (n+1, k)
adamc@2 127 | x => x) (#renameC env)
adamc@2 128 in
adamc@9 129 {renameC = SM.insert (renameC, x, Rel' (0, k)),
adamc@2 130 relC = (x, k) :: #relC env,
adamc@13 131 namedC = IM.map (fn (x, k, co) => (x, k, Option.map lift co)) (#namedC env),
adamc@9 132
adamc@157 133 datatypes = #datatypes env,
adamc@157 134
adamc@9 135 renameE = #renameE env,
adamc@13 136 relE = map (fn (x, c) => (x, lift c)) (#relE env),
adamc@31 137 namedE = IM.map (fn (x, c) => (x, lift c)) (#namedE env),
adamc@31 138
adamc@31 139 renameSgn = #renameSgn env,
adamc@31 140 sgn = #sgn env,
adamc@31 141
adamc@31 142 renameStr = #renameStr env,
adamc@31 143 str = #str env
adamc@31 144 }
adamc@2 145 end
adamc@2 146
adamc@2 147 fun lookupCRel (env : env) n =
adamc@2 148 (List.nth (#relC env, n))
adamc@2 149 handle Subscript => raise UnboundRel n
adamc@2 150
adamc@11 151 fun pushCNamedAs (env : env) x n k co =
adamc@9 152 {renameC = SM.insert (#renameC env, x, Named' (n, k)),
adamc@5 153 relC = #relC env,
adamc@11 154 namedC = IM.insert (#namedC env, n, (x, k, co)),
adamc@9 155
adamc@157 156 datatypes = #datatypes env,
adamc@157 157
adamc@9 158 renameE = #renameE env,
adamc@9 159 relE = #relE env,
adamc@31 160 namedE = #namedE env,
adamc@31 161
adamc@31 162 renameSgn = #renameSgn env,
adamc@31 163 sgn = #sgn env,
adamc@31 164
adamc@31 165 renameStr = #renameStr env,
adamc@31 166 str = #str env}
adamc@5 167
adamc@11 168 fun pushCNamed env x k co =
adamc@2 169 let
adamc@2 170 val n = !namedCounter
adamc@2 171 in
adamc@2 172 namedCounter := n + 1;
adamc@11 173 (pushCNamedAs env x n k co, n)
adamc@2 174 end
adamc@2 175
adamc@2 176 fun lookupCNamed (env : env) n =
adamc@2 177 case IM.find (#namedC env, n) of
adamc@2 178 NONE => raise UnboundNamed n
adamc@2 179 | SOME x => x
adamc@2 180
adamc@2 181 fun lookupC (env : env) x =
adamc@2 182 case SM.find (#renameC env, x) of
adamc@9 183 NONE => NotBound
adamc@9 184 | SOME (Rel' x) => Rel x
adamc@9 185 | SOME (Named' x) => Named x
adamc@9 186
adamc@157 187 fun pushDatatype (env : env) n xncs =
adamc@157 188 {renameC = #renameC env,
adamc@157 189 relC = #relC env,
adamc@157 190 namedC = #namedC env,
adamc@157 191
adamc@157 192 datatypes = IM.insert (#datatypes env, n,
adamc@157 193 foldl (fn ((x, n, to), cons) =>
adamc@157 194 IM.insert (cons, n, (x, to))) IM.empty xncs),
adamc@157 195
adamc@157 196 renameE = #renameE env,
adamc@157 197 relE = #relE env,
adamc@157 198 namedE = #namedE env,
adamc@157 199
adamc@157 200 renameSgn = #renameSgn env,
adamc@157 201 sgn = #sgn env,
adamc@157 202
adamc@157 203 renameStr = #renameStr env,
adamc@157 204 str = #str env}
adamc@157 205
adamc@157 206 fun lookupDatatype (env : env) n =
adamc@157 207 case IM.find (#datatypes env, n) of
adamc@157 208 NONE => raise UnboundNamed n
adamc@157 209 | SOME x => x
adamc@157 210
adamc@157 211 fun lookupConstructor dt n =
adamc@157 212 case IM.find (dt, n) of
adamc@157 213 NONE => raise UnboundNamed n
adamc@157 214 | SOME x => x
adamc@157 215
adamc@157 216 fun constructors dt = IM.foldri (fn (n, (x, to), ls) => (x, n, to) :: ls) [] dt
adamc@157 217
adamc@9 218 fun pushERel (env : env) x t =
adamc@9 219 let
adamc@9 220 val renameE = SM.map (fn Rel' (n, t) => Rel' (n+1, t)
adamc@9 221 | x => x) (#renameE env)
adamc@9 222 in
adamc@9 223 {renameC = #renameC env,
adamc@9 224 relC = #relC env,
adamc@9 225 namedC = #namedC env,
adamc@9 226
adamc@157 227 datatypes = #datatypes env,
adamc@157 228
adamc@9 229 renameE = SM.insert (renameE, x, Rel' (0, t)),
adamc@9 230 relE = (x, t) :: #relE env,
adamc@31 231 namedE = #namedE env,
adamc@31 232
adamc@31 233 renameSgn = #renameSgn env,
adamc@31 234 sgn = #sgn env,
adamc@31 235
adamc@31 236 renameStr = #renameStr env,
adamc@31 237 str = #str env}
adamc@9 238 end
adamc@9 239
adamc@9 240 fun lookupERel (env : env) n =
adamc@9 241 (List.nth (#relE env, n))
adamc@9 242 handle Subscript => raise UnboundRel n
adamc@9 243
adamc@9 244 fun pushENamedAs (env : env) x n t =
adamc@9 245 {renameC = #renameC env,
adamc@9 246 relC = #relC env,
adamc@9 247 namedC = #namedC env,
adamc@9 248
adamc@157 249 datatypes = #datatypes env,
adamc@157 250
adamc@9 251 renameE = SM.insert (#renameE env, x, Named' (n, t)),
adamc@9 252 relE = #relE env,
adamc@31 253 namedE = IM.insert (#namedE env, n, (x, t)),
adamc@31 254
adamc@31 255 renameSgn = #renameSgn env,
adamc@31 256 sgn = #sgn env,
adamc@31 257
adamc@31 258 renameStr = #renameStr env,
adamc@31 259 str = #str env}
adamc@9 260
adamc@9 261 fun pushENamed env x t =
adamc@9 262 let
adamc@9 263 val n = !namedCounter
adamc@9 264 in
adamc@9 265 namedCounter := n + 1;
adamc@9 266 (pushENamedAs env x n t, n)
adamc@9 267 end
adamc@9 268
adamc@9 269 fun lookupENamed (env : env) n =
adamc@9 270 case IM.find (#namedE env, n) of
adamc@9 271 NONE => raise UnboundNamed n
adamc@9 272 | SOME x => x
adamc@9 273
adamc@9 274 fun lookupE (env : env) x =
adamc@9 275 case SM.find (#renameE env, x) of
adamc@9 276 NONE => NotBound
adamc@9 277 | SOME (Rel' x) => Rel x
adamc@9 278 | SOME (Named' x) => Named x
adamc@2 279
adamc@31 280 fun pushSgnNamedAs (env : env) x n sgis =
adamc@31 281 {renameC = #renameC env,
adamc@31 282 relC = #relC env,
adamc@31 283 namedC = #namedC env,
adamc@31 284
adamc@157 285 datatypes = #datatypes env,
adamc@157 286
adamc@31 287 renameE = #renameE env,
adamc@31 288 relE = #relE env,
adamc@31 289 namedE = #namedE env,
adamc@31 290
adamc@31 291 renameSgn = SM.insert (#renameSgn env, x, (n, sgis)),
adamc@31 292 sgn = IM.insert (#sgn env, n, (x, sgis)),
adamc@31 293
adamc@31 294 renameStr = #renameStr env,
adamc@31 295 str = #str env}
adamc@31 296
adamc@31 297 fun pushSgnNamed env x sgis =
adamc@31 298 let
adamc@31 299 val n = !namedCounter
adamc@31 300 in
adamc@31 301 namedCounter := n + 1;
adamc@31 302 (pushSgnNamedAs env x n sgis, n)
adamc@31 303 end
adamc@31 304
adamc@31 305 fun lookupSgnNamed (env : env) n =
adamc@31 306 case IM.find (#sgn env, n) of
adamc@31 307 NONE => raise UnboundNamed n
adamc@31 308 | SOME x => x
adamc@31 309
adamc@31 310 fun lookupSgn (env : env) x = SM.find (#renameSgn env, x)
adamc@31 311
adamc@31 312 fun pushStrNamedAs (env : env) x n sgis =
adamc@31 313 {renameC = #renameC env,
adamc@31 314 relC = #relC env,
adamc@31 315 namedC = #namedC env,
adamc@31 316
adamc@157 317 datatypes = #datatypes env,
adamc@157 318
adamc@31 319 renameE = #renameE env,
adamc@31 320 relE = #relE env,
adamc@31 321 namedE = #namedE env,
adamc@31 322
adamc@31 323 renameSgn = #renameSgn env,
adamc@31 324 sgn = #sgn env,
adamc@31 325
adamc@31 326 renameStr = SM.insert (#renameStr env, x, (n, sgis)),
adamc@31 327 str = IM.insert (#str env, n, (x, sgis))}
adamc@31 328
adamc@31 329 fun pushStrNamed env x sgis =
adamc@31 330 let
adamc@31 331 val n = !namedCounter
adamc@31 332 in
adamc@31 333 namedCounter := n + 1;
adamc@31 334 (pushStrNamedAs env x n sgis, n)
adamc@31 335 end
adamc@31 336
adamc@31 337 fun lookupStrNamed (env : env) n =
adamc@31 338 case IM.find (#str env, n) of
adamc@31 339 NONE => raise UnboundNamed n
adamc@31 340 | SOME x => x
adamc@31 341
adamc@31 342 fun lookupStr (env : env) x = SM.find (#renameStr env, x)
adamc@31 343
adamc@156 344 fun sgiBinds env (sgi, loc) =
adamc@31 345 case sgi of
adamc@31 346 SgiConAbs (x, n, k) => pushCNamedAs env x n k NONE
adamc@31 347 | SgiCon (x, n, k, c) => pushCNamedAs env x n k (SOME c)
adamc@156 348 | SgiDatatype (x, n, xncs) =>
adamc@156 349 let
adamc@156 350 val env = pushCNamedAs env x n (KType, loc) NONE
adamc@156 351 in
adamc@156 352 foldl (fn ((x', n', NONE), env) => pushENamedAs env x' n' (CNamed n, loc)
adamc@156 353 | ((x', n', SOME t), env) => pushENamedAs env x' n' (TFun (t, (CNamed n, loc)), loc))
adamc@156 354 env xncs
adamc@156 355 end
adamc@162 356 | SgiDatatypeImp (x, n, m1, ms, x', xncs) =>
adamc@162 357 let
adamc@162 358 val env = pushCNamedAs env x n (KType, loc) (SOME (CModProj (m1, ms, x'), loc))
adamc@162 359 in
adamc@162 360 foldl (fn ((x', n', NONE), env) => pushENamedAs env x' n' (CNamed n, loc)
adamc@162 361 | ((x', n', SOME t), env) => pushENamedAs env x' n' (TFun (t, (CNamed n, loc)), loc))
adamc@162 362 env xncs
adamc@162 363 end
adamc@31 364 | SgiVal (x, n, t) => pushENamedAs env x n t
adamc@31 365 | SgiStr (x, n, sgn) => pushStrNamedAs env x n sgn
adamc@59 366 | SgiSgn (x, n, sgn) => pushSgnNamedAs env x n sgn
adamc@88 367 | SgiConstraint _ => env
adamc@31 368
adamc@34 369 fun sgnSeek f sgis =
adamc@34 370 let
adamc@59 371 fun seek (sgis, sgns, strs, cons) =
adamc@34 372 case sgis of
adamc@34 373 [] => NONE
adamc@34 374 | (sgi, _) :: sgis =>
adamc@34 375 case f sgi of
adamc@158 376 SOME v =>
adamc@158 377 let
adamc@158 378 val cons =
adamc@158 379 case sgi of
adamc@158 380 SgiDatatype (x, n, _) => IM.insert (cons, n, x)
adamc@162 381 | SgiDatatypeImp (x, n, _, _, _, _) => IM.insert (cons, n, x)
adamc@158 382 | _ => cons
adamc@158 383 in
adamc@158 384 SOME (v, (sgns, strs, cons))
adamc@158 385 end
adamc@88 386 | NONE =>
adamc@88 387 case sgi of
adamc@88 388 SgiConAbs (x, n, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x))
adamc@88 389 | SgiCon (x, n, _, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x))
adamc@156 390 | SgiDatatype (x, n, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x))
adamc@162 391 | SgiDatatypeImp (x, n, _, _, _, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x))
adamc@88 392 | SgiVal _ => seek (sgis, sgns, strs, cons)
adamc@88 393 | SgiSgn (x, n, _) => seek (sgis, IM.insert (sgns, n, x), strs, cons)
adamc@88 394 | SgiStr (x, n, _) => seek (sgis, sgns, IM.insert (strs, n, x), cons)
adamc@88 395 | SgiConstraint _ => seek (sgis, sgns, strs, cons)
adamc@34 396 in
adamc@59 397 seek (sgis, IM.empty, IM.empty, IM.empty)
adamc@34 398 end
adamc@34 399
adamc@34 400 fun id x = x
adamc@34 401
adamc@34 402 fun unravelStr (str, _) =
adamc@34 403 case str of
adamc@34 404 StrVar x => (x, [])
adamc@34 405 | StrProj (str, m) =>
adamc@34 406 let
adamc@34 407 val (x, ms) = unravelStr str
adamc@34 408 in
adamc@34 409 (x, ms @ [m])
adamc@34 410 end
adamc@34 411 | _ => raise Fail "unravelStr"
adamc@34 412
adamc@59 413 fun sgnS_con (str, (sgns, strs, cons)) c =
adamc@34 414 case c of
adamc@34 415 CModProj (m1, ms, x) =>
adamc@34 416 (case IM.find (strs, m1) of
adamc@34 417 NONE => c
adamc@34 418 | SOME m1x =>
adamc@34 419 let
adamc@34 420 val (m1, ms') = unravelStr str
adamc@34 421 in
adamc@34 422 CModProj (m1, ms' @ m1x :: ms, x)
adamc@34 423 end)
adamc@34 424 | CNamed n =>
adamc@34 425 (case IM.find (cons, n) of
adamc@34 426 NONE => c
adamc@34 427 | SOME nx =>
adamc@34 428 let
adamc@34 429 val (m1, ms) = unravelStr str
adamc@34 430 in
adamc@34 431 CModProj (m1, ms, nx)
adamc@34 432 end)
adamc@34 433 | _ => c
adamc@34 434
adamc@59 435 fun sgnS_sgn (str, (sgns, strs, cons)) sgn =
adamc@59 436 case sgn of
adamc@59 437 SgnProj (m1, ms, x) =>
adamc@59 438 (case IM.find (strs, m1) of
adamc@59 439 NONE => sgn
adamc@59 440 | SOME m1x =>
adamc@59 441 let
adamc@59 442 val (m1, ms') = unravelStr str
adamc@59 443 in
adamc@59 444 SgnProj (m1, ms' @ m1x :: ms, x)
adamc@59 445 end)
adamc@59 446 | SgnVar n =>
adamc@59 447 (case IM.find (sgns, n) of
adamc@59 448 NONE => sgn
adamc@59 449 | SOME nx =>
adamc@59 450 let
adamc@59 451 val (m1, ms) = unravelStr str
adamc@59 452 in
adamc@59 453 SgnProj (m1, ms, nx)
adamc@59 454 end)
adamc@59 455 | _ => sgn
adamc@59 456
adamc@59 457 fun sgnSubCon x =
adamc@34 458 ElabUtil.Con.map {kind = id,
adamc@59 459 con = sgnS_con x}
adamc@34 460
adamc@59 461 fun sgnSubSgn x =
adamc@34 462 ElabUtil.Sgn.map {kind = id,
adamc@59 463 con = sgnS_con x,
adamc@34 464 sgn_item = id,
adamc@59 465 sgn = sgnS_sgn x}
adamc@34 466
adamc@42 467 fun hnormSgn env (all as (sgn, loc)) =
adamc@34 468 case sgn of
adamc@42 469 SgnError => all
adamc@42 470 | SgnVar n => hnormSgn env (#2 (lookupSgnNamed env n))
adamc@42 471 | SgnConst _ => all
adamc@42 472 | SgnFun _ => all
adamc@59 473 | SgnProj (m, ms, x) =>
adamc@59 474 let
adamc@59 475 val (_, sgn) = lookupStrNamed env m
adamc@59 476 in
adamc@59 477 case projectSgn env {str = foldl (fn (m, str) => (StrProj (str, m), loc)) (StrVar m, loc) ms,
adamc@59 478 sgn = sgn,
adamc@59 479 field = x} of
adamc@59 480 NONE => raise Fail "ElabEnv.hnormSgn: projectSgn failed"
adamc@59 481 | SOME sgn => sgn
adamc@59 482 end
adamc@42 483 | SgnWhere (sgn, x, c) =>
adamc@42 484 case #1 (hnormSgn env sgn) of
adamc@42 485 SgnError => (SgnError, loc)
adamc@42 486 | SgnConst sgis =>
adamc@42 487 let
adamc@42 488 fun traverse (pre, post) =
adamc@42 489 case post of
adamc@42 490 [] => raise Fail "ElabEnv.hnormSgn: Can't reduce 'where' [1]"
adamc@42 491 | (sgi as (SgiConAbs (x', n, k), loc)) :: rest =>
adamc@42 492 if x = x' then
adamc@42 493 List.revAppend (pre, (SgiCon (x', n, k, c), loc) :: rest)
adamc@42 494 else
adamc@42 495 traverse (sgi :: pre, rest)
adamc@42 496 | sgi :: rest => traverse (sgi :: pre, rest)
adamc@42 497
adamc@42 498 val sgis = traverse ([], sgis)
adamc@42 499 in
adamc@42 500 (SgnConst sgis, loc)
adamc@42 501 end
adamc@42 502 | _ => raise Fail "ElabEnv.hnormSgn: Can't reduce 'where' [2]"
adamc@42 503
adamc@59 504 and projectSgn env {sgn, str, field} =
adamc@59 505 case #1 (hnormSgn env sgn) of
adamc@59 506 SgnConst sgis =>
adamc@59 507 (case sgnSeek (fn SgiSgn (x, _, sgn) => if x = field then SOME sgn else NONE | _ => NONE) sgis of
adamc@59 508 NONE => NONE
adamc@59 509 | SOME (sgn, subs) => SOME (sgnSubSgn (str, subs) sgn))
adamc@59 510 | SgnError => SOME (SgnError, ErrorMsg.dummySpan)
adamc@59 511 | _ => NONE
adamc@59 512
adamc@59 513 fun projectStr env {sgn, str, field} =
adamc@59 514 case #1 (hnormSgn env sgn) of
adamc@59 515 SgnConst sgis =>
adamc@59 516 (case sgnSeek (fn SgiStr (x, _, sgn) => if x = field then SOME sgn else NONE | _ => NONE) sgis of
adamc@59 517 NONE => NONE
adamc@59 518 | SOME (sgn, subs) => SOME (sgnSubSgn (str, subs) sgn))
adamc@59 519 | SgnError => SOME (SgnError, ErrorMsg.dummySpan)
adamc@59 520 | _ => NONE
adamc@59 521
adamc@158 522 fun chaseMpath env (n, ms) =
adamc@158 523 let
adamc@158 524 val (_, sgn) = lookupStrNamed env n
adamc@158 525 in
adamc@158 526 foldl (fn (m, (str, sgn)) =>
adamc@158 527 case projectStr env {sgn = sgn, str = str, field = m} of
adamc@158 528 NONE => raise Fail "kindof: Unknown substructure"
adamc@158 529 | SOME sgn => ((StrProj (str, m), #2 sgn), sgn))
adamc@158 530 ((StrVar n, #2 sgn), sgn) ms
adamc@158 531 end
adamc@158 532
adamc@42 533 fun projectCon env {sgn, str, field} =
adamc@42 534 case #1 (hnormSgn env sgn) of
adamc@34 535 SgnConst sgis =>
adamc@34 536 (case sgnSeek (fn SgiConAbs (x, _, k) => if x = field then SOME (k, NONE) else NONE
adamc@34 537 | SgiCon (x, _, k, c) => if x = field then SOME (k, SOME c) else NONE
adamc@157 538 | SgiDatatype (x, _, _) => if x = field then SOME ((KType, #2 sgn), NONE) else NONE
adamc@162 539 | SgiDatatypeImp (x, _, m1, ms, x', _) =>
adamc@158 540 if x = field then
adamc@158 541 SOME ((KType, #2 sgn), SOME (CModProj (m1, ms, x'), #2 sgn))
adamc@158 542 else
adamc@158 543 NONE
adamc@34 544 | _ => NONE) sgis of
adamc@34 545 NONE => NONE
adamc@34 546 | SOME ((k, co), subs) => SOME (k, Option.map (sgnSubCon (str, subs)) co))
adamc@34 547 | SgnError => SOME ((KError, ErrorMsg.dummySpan), SOME (CError, ErrorMsg.dummySpan))
adamc@42 548 | _ => NONE
adamc@34 549
adamc@157 550 fun projectDatatype env {sgn, str, field} =
adamc@157 551 case #1 (hnormSgn env sgn) of
adamc@157 552 SgnConst sgis =>
adamc@157 553 (case sgnSeek (fn SgiDatatype (x, _, xncs) => if x = field then SOME xncs else NONE
adamc@162 554 | SgiDatatypeImp (x, _, _, _, _, xncs) => if x = field then SOME xncs else NONE
adamc@157 555 | _ => NONE) sgis of
adamc@157 556 NONE => NONE
adamc@157 557 | SOME (xncs, subs) => SOME (map (fn (x, n, to) => (x, n, Option.map (sgnSubCon (str, subs)) to)) xncs))
adamc@157 558 | _ => NONE
adamc@157 559
adamc@42 560 fun projectVal env {sgn, str, field} =
adamc@42 561 case #1 (hnormSgn env sgn) of
adamc@34 562 SgnConst sgis =>
adamc@162 563 let
adamc@162 564 fun seek (n, xncs) =
adamc@162 565 ListUtil.search (fn (x, _, to) =>
adamc@162 566 if x = field then
adamc@162 567 SOME (case to of
adamc@162 568 NONE => (CNamed n, #2 sgn)
adamc@162 569 | SOME t => (TFun (t, (CNamed n, #2 sgn)), #2 sgn))
adamc@162 570 else
adamc@162 571 NONE) xncs
adamc@162 572 in
adamc@162 573 case sgnSeek (fn SgiVal (x, _, c) => if x = field then SOME c else NONE
adamc@162 574 | SgiDatatype (_, n, xncs) => seek (n, xncs)
adamc@162 575 | SgiDatatypeImp (_, n, _, _, _, xncs) => seek (n, xncs)
adamc@162 576 | _ => NONE) sgis of
adamc@162 577 NONE => NONE
adamc@162 578 | SOME (c, subs) => SOME (sgnSubCon (str, subs) c)
adamc@162 579 end
adamc@34 580 | SgnError => SOME (CError, ErrorMsg.dummySpan)
adamc@42 581 | _ => NONE
adamc@34 582
adamc@88 583 fun sgnSeekConstraints (str, sgis) =
adamc@88 584 let
adamc@88 585 fun seek (sgis, sgns, strs, cons, acc) =
adamc@88 586 case sgis of
adamc@88 587 [] => acc
adamc@88 588 | (sgi, _) :: sgis =>
adamc@88 589 case sgi of
adamc@88 590 SgiConstraint (c1, c2) =>
adamc@88 591 let
adamc@88 592 val sub = sgnSubCon (str, (sgns, strs, cons))
adamc@88 593 in
adamc@88 594 seek (sgis, sgns, strs, cons, (sub c1, sub c2) :: acc)
adamc@88 595 end
adamc@88 596 | SgiConAbs (x, n, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@88 597 | SgiCon (x, n, _, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@156 598 | SgiDatatype (x, n, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@162 599 | SgiDatatypeImp (x, n, _, _, _, _) => seek (sgis, sgns, strs, IM.insert (cons, n, x), acc)
adamc@88 600 | SgiVal _ => seek (sgis, sgns, strs, cons, acc)
adamc@88 601 | SgiSgn (x, n, _) => seek (sgis, IM.insert (sgns, n, x), strs, cons, acc)
adamc@88 602 | SgiStr (x, n, _) => seek (sgis, sgns, IM.insert (strs, n, x), cons, acc)
adamc@88 603 in
adamc@88 604 seek (sgis, IM.empty, IM.empty, IM.empty, [])
adamc@88 605 end
adamc@88 606
adamc@88 607 fun projectConstraints env {sgn, str} =
adamc@88 608 case #1 (hnormSgn env sgn) of
adamc@88 609 SgnConst sgis => SOME (sgnSeekConstraints (str, sgis))
adamc@88 610 | SgnError => SOME []
adamc@88 611 | _ => NONE
adamc@34 612
adamc@157 613 fun declBinds env (d, loc) =
adamc@157 614 case d of
adamc@157 615 DCon (x, n, k, c) => pushCNamedAs env x n k (SOME c)
adamc@157 616 | DDatatype (x, n, xncs) =>
adamc@157 617 let
adamc@157 618 val env = pushCNamedAs env x n (KType, loc) NONE
adamc@157 619 in
adamc@157 620 foldl (fn ((x', n', NONE), env) => pushENamedAs env x' n' (CNamed n, loc)
adamc@157 621 | ((x', n', SOME t), env) => pushENamedAs env x' n' (TFun (t, (CNamed n, loc)), loc))
adamc@157 622 env xncs
adamc@157 623 end
adamc@162 624 | DDatatypeImp (x, n, m, ms, x', xncs) =>
adamc@157 625 let
adamc@157 626 val t = (CModProj (m, ms, x'), loc)
adamc@157 627 val env = pushCNamedAs env x n (KType, loc) (SOME t)
adamc@157 628
adamc@157 629 val t = (CNamed n, loc)
adamc@157 630 in
adamc@157 631 foldl (fn ((x', n', NONE), env) => pushENamedAs env x' n' t
adamc@157 632 | ((x', n', SOME t'), env) => pushENamedAs env x' n' (TFun (t', t), loc))
adamc@157 633 env xncs
adamc@157 634 end
adamc@157 635 | DVal (x, n, t, _) => pushENamedAs env x n t
adamc@157 636 | DValRec vis => foldl (fn ((x, n, t, _), env) => pushENamedAs env x n t) env vis
adamc@157 637 | DSgn (x, n, sgn) => pushSgnNamedAs env x n sgn
adamc@157 638 | DStr (x, n, sgn, _) => pushStrNamedAs env x n sgn
adamc@157 639 | DFfiStr (x, n, sgn) => pushStrNamedAs env x n sgn
adamc@157 640 | DConstraint _ => env
adamc@157 641 | DExport _ => env
adamc@157 642
adamc@2 643 end