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annotate src/elab_util.sml @ 207:cc68da3801bc

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author Adam Chlipala <adamc@hcoop.net>
date Thu, 14 Aug 2008 18:35:08 -0400
parents cb8f69556975
children e86411f647c6
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 ElabUtil :> ELAB_UTIL = struct
adamc@2 29
adamc@2 30 open Elab
adamc@2 31
adamc@188 32 fun classifyDatatype xncs =
adamc@198 33 case xncs of
adamc@198 34 [(_, _, NONE), (_, _, SOME _)] => Option
adamc@198 35 | [(_, _, SOME _), (_, _, NONE)] => Option
adamc@198 36 | _ =>
adamc@198 37 if List.all (fn (_, _, NONE) => true | _ => false) xncs then
adamc@198 38 Enum
adamc@198 39 else
adamc@198 40 Default
adamc@188 41
adamc@2 42 structure S = Search
adamc@2 43
adamc@2 44 structure Kind = struct
adamc@2 45
adamc@6 46 fun mapfold f =
adamc@2 47 let
adamc@2 48 fun mfk k acc =
adamc@2 49 S.bindP (mfk' k acc, f)
adamc@2 50
adamc@2 51 and mfk' (kAll as (k, loc)) =
adamc@2 52 case k of
adamc@2 53 KType => S.return2 kAll
adamc@2 54
adamc@2 55 | KArrow (k1, k2) =>
adamc@2 56 S.bind2 (mfk k1,
adamc@2 57 fn k1' =>
adamc@2 58 S.map2 (mfk k2,
adamc@2 59 fn k2' =>
adamc@2 60 (KArrow (k1', k2'), loc)))
adamc@2 61
adamc@2 62 | KName => S.return2 kAll
adamc@2 63
adamc@2 64 | KRecord k =>
adamc@2 65 S.map2 (mfk k,
adamc@2 66 fn k' =>
adamc@2 67 (KRecord k', loc))
adamc@2 68
adamc@82 69 | KUnit => S.return2 kAll
adamc@82 70
adamc@207 71 | KTuple ks =>
adamc@207 72 S.map2 (ListUtil.mapfold mfk ks,
adamc@207 73 fn ks' =>
adamc@207 74 (KTuple ks', loc))
adamc@207 75
adamc@2 76 | KError => S.return2 kAll
adamc@2 77
adamc@76 78 | KUnif (_, _, ref (SOME k)) => mfk' k
adamc@2 79 | KUnif _ => S.return2 kAll
adamc@2 80 in
adamc@2 81 mfk
adamc@2 82 end
adamc@2 83
adamc@2 84 fun exists f k =
adamc@6 85 case mapfold (fn k => fn () =>
adamc@6 86 if f k then
adamc@6 87 S.Return ()
adamc@6 88 else
adamc@6 89 S.Continue (k, ())) k () of
adamc@6 90 S.Return _ => true
adamc@6 91 | S.Continue _ => false
adamc@6 92
adamc@6 93 end
adamc@6 94
adamc@6 95 structure Con = struct
adamc@6 96
adamc@11 97 datatype binder =
adamc@11 98 Rel of string * Elab.kind
adamc@11 99 | Named of string * Elab.kind
adamc@11 100
adamc@11 101 fun mapfoldB {kind = fk, con = fc, bind} =
adamc@6 102 let
adamc@6 103 val mfk = Kind.mapfold fk
adamc@6 104
adamc@11 105 fun mfc ctx c acc =
adamc@11 106 S.bindP (mfc' ctx c acc, fc ctx)
adamc@6 107
adamc@11 108 and mfc' ctx (cAll as (c, loc)) =
adamc@6 109 case c of
adamc@6 110 TFun (c1, c2) =>
adamc@11 111 S.bind2 (mfc ctx c1,
adamc@6 112 fn c1' =>
adamc@11 113 S.map2 (mfc ctx c2,
adamc@6 114 fn c2' =>
adamc@6 115 (TFun (c1', c2'), loc)))
adamc@6 116 | TCFun (e, x, k, c) =>
adamc@6 117 S.bind2 (mfk k,
adamc@6 118 fn k' =>
adamc@11 119 S.map2 (mfc (bind (ctx, Rel (x, k))) c,
adamc@6 120 fn c' =>
adamc@6 121 (TCFun (e, x, k', c'), loc)))
adamc@85 122 | TDisjoint (c1, c2, c3) =>
adamc@85 123 S.bind2 (mfc ctx c1,
adamc@85 124 fn c1' =>
adamc@85 125 S.bind2 (mfc ctx c2,
adamc@85 126 fn c2' =>
adamc@85 127 S.map2 (mfc ctx c3,
adamc@85 128 fn c3' =>
adamc@85 129 (TDisjoint (c1', c2', c3'), loc))))
adamc@6 130 | TRecord c =>
adamc@11 131 S.map2 (mfc ctx c,
adamc@6 132 fn c' =>
adamc@6 133 (TRecord c', loc))
adamc@6 134
adamc@6 135 | CRel _ => S.return2 cAll
adamc@6 136 | CNamed _ => S.return2 cAll
adamc@34 137 | CModProj _ => S.return2 cAll
adamc@6 138 | CApp (c1, c2) =>
adamc@11 139 S.bind2 (mfc ctx c1,
adamc@6 140 fn c1' =>
adamc@11 141 S.map2 (mfc ctx c2,
adamc@6 142 fn c2' =>
adamc@6 143 (CApp (c1', c2'), loc)))
adamc@8 144 | CAbs (x, k, c) =>
adamc@6 145 S.bind2 (mfk k,
adamc@6 146 fn k' =>
adamc@11 147 S.map2 (mfc (bind (ctx, Rel (x, k))) c,
adamc@6 148 fn c' =>
adamc@8 149 (CAbs (x, k', c'), loc)))
adamc@84 150 | CDisjoint (c1, c2, c3) =>
adamc@84 151 S.bind2 (mfc ctx c1,
adamc@84 152 fn c1' =>
adamc@84 153 S.bind2 (mfc ctx c2,
adamc@84 154 fn c2' =>
adamc@84 155 S.map2 (mfc ctx c3,
adamc@84 156 fn c3' =>
adamc@84 157 (CDisjoint (c1', c2', c3'), loc))))
adamc@6 158
adamc@6 159 | CName _ => S.return2 cAll
adamc@6 160
adamc@6 161 | CRecord (k, xcs) =>
adamc@6 162 S.bind2 (mfk k,
adamc@6 163 fn k' =>
adamc@6 164 S.map2 (ListUtil.mapfold (fn (x, c) =>
adamc@11 165 S.bind2 (mfc ctx x,
adamc@6 166 fn x' =>
adamc@11 167 S.map2 (mfc ctx c,
adamc@6 168 fn c' =>
adamc@6 169 (x', c'))))
adamc@6 170 xcs,
adamc@6 171 fn xcs' =>
adamc@6 172 (CRecord (k', xcs'), loc)))
adamc@6 173 | CConcat (c1, c2) =>
adamc@11 174 S.bind2 (mfc ctx c1,
adamc@6 175 fn c1' =>
adamc@11 176 S.map2 (mfc ctx c2,
adamc@6 177 fn c2' =>
adamc@6 178 (CConcat (c1', c2'), loc)))
adamc@67 179 | CFold (k1, k2) =>
adamc@67 180 S.bind2 (mfk k1,
adamc@67 181 fn k1' =>
adamc@67 182 S.map2 (mfk k2,
adamc@67 183 fn k2' =>
adamc@67 184 (CFold (k1', k2'), loc)))
adamc@6 185
adamc@82 186 | CUnit => S.return2 cAll
adamc@82 187
adamc@207 188 | CTuple cs =>
adamc@207 189 S.map2 (ListUtil.mapfold (mfc ctx) cs,
adamc@207 190 fn cs' =>
adamc@207 191 (CTuple cs', loc))
adamc@207 192
adamc@207 193 | CProj (c, n) =>
adamc@207 194 S.map2 (mfc ctx c,
adamc@207 195 fn c' =>
adamc@207 196 (CProj (c', n), loc))
adamc@207 197
adamc@6 198 | CError => S.return2 cAll
adamc@76 199 | CUnif (_, _, _, ref (SOME c)) => mfc' ctx c
adamc@6 200 | CUnif _ => S.return2 cAll
adamc@6 201 in
adamc@6 202 mfc
adamc@6 203 end
adamc@6 204
adamc@11 205 fun mapfold {kind = fk, con = fc} =
adamc@11 206 mapfoldB {kind = fk,
adamc@11 207 con = fn () => fc,
adamc@11 208 bind = fn ((), _) => ()} ()
adamc@11 209
adamc@11 210 fun mapB {kind, con, bind} ctx c =
adamc@11 211 case mapfoldB {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@11 212 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@11 213 bind = bind} ctx c () of
adamc@11 214 S.Continue (c, ()) => c
adamc@34 215 | S.Return _ => raise Fail "ElabUtil.Con.mapB: Impossible"
adamc@34 216
adamc@34 217 fun map {kind, con} s =
adamc@34 218 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@34 219 con = fn c => fn () => S.Continue (con c, ())} s () of
adamc@34 220 S.Return () => raise Fail "ElabUtil.Con.map: Impossible"
adamc@34 221 | S.Continue (s, ()) => s
adamc@11 222
adamc@6 223 fun exists {kind, con} k =
adamc@6 224 case mapfold {kind = fn k => fn () =>
adamc@6 225 if kind k then
adamc@6 226 S.Return ()
adamc@6 227 else
adamc@6 228 S.Continue (k, ()),
adamc@6 229 con = fn c => fn () =>
adamc@6 230 if con c then
adamc@6 231 S.Return ()
adamc@6 232 else
adamc@6 233 S.Continue (c, ())} k () of
adamc@2 234 S.Return _ => true
adamc@2 235 | S.Continue _ => false
adamc@2 236
adamc@2 237 end
adamc@2 238
adamc@10 239 structure Exp = struct
adamc@10 240
adamc@11 241 datatype binder =
adamc@11 242 RelC of string * Elab.kind
adamc@11 243 | NamedC of string * Elab.kind
adamc@11 244 | RelE of string * Elab.con
adamc@11 245 | NamedE of string * Elab.con
adamc@11 246
adamc@11 247 fun mapfoldB {kind = fk, con = fc, exp = fe, bind} =
adamc@10 248 let
adamc@10 249 val mfk = Kind.mapfold fk
adamc@10 250
adamc@11 251 fun bind' (ctx, b) =
adamc@11 252 let
adamc@11 253 val b' = case b of
adamc@11 254 Con.Rel x => RelC x
adamc@11 255 | Con.Named x => NamedC x
adamc@11 256 in
adamc@11 257 bind (ctx, b')
adamc@11 258 end
adamc@11 259 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@10 260
adamc@11 261 fun mfe ctx e acc =
adamc@11 262 S.bindP (mfe' ctx e acc, fe ctx)
adamc@11 263
adamc@11 264 and mfe' ctx (eAll as (e, loc)) =
adamc@10 265 case e of
adamc@14 266 EPrim _ => S.return2 eAll
adamc@14 267 | ERel _ => S.return2 eAll
adamc@10 268 | ENamed _ => S.return2 eAll
adamc@34 269 | EModProj _ => S.return2 eAll
adamc@10 270 | EApp (e1, e2) =>
adamc@11 271 S.bind2 (mfe ctx e1,
adamc@10 272 fn e1' =>
adamc@11 273 S.map2 (mfe ctx e2,
adamc@10 274 fn e2' =>
adamc@10 275 (EApp (e1', e2'), loc)))
adamc@26 276 | EAbs (x, dom, ran, e) =>
adamc@26 277 S.bind2 (mfc ctx dom,
adamc@26 278 fn dom' =>
adamc@26 279 S.bind2 (mfc ctx ran,
adamc@26 280 fn ran' =>
adamc@26 281 S.map2 (mfe (bind (ctx, RelE (x, dom'))) e,
adamc@26 282 fn e' =>
adamc@26 283 (EAbs (x, dom', ran', e'), loc))))
adamc@26 284
adamc@10 285 | ECApp (e, c) =>
adamc@11 286 S.bind2 (mfe ctx e,
adamc@10 287 fn e' =>
adamc@11 288 S.map2 (mfc ctx c,
adamc@10 289 fn c' =>
adamc@10 290 (ECApp (e', c'), loc)))
adamc@10 291 | ECAbs (expl, x, k, e) =>
adamc@10 292 S.bind2 (mfk k,
adamc@10 293 fn k' =>
adamc@11 294 S.map2 (mfe (bind (ctx, RelC (x, k))) e,
adamc@10 295 fn e' =>
adamc@10 296 (ECAbs (expl, x, k', e'), loc)))
adamc@10 297
adamc@12 298 | ERecord xes =>
adamc@29 299 S.map2 (ListUtil.mapfold (fn (x, e, t) =>
adamc@12 300 S.bind2 (mfc ctx x,
adamc@12 301 fn x' =>
adamc@29 302 S.bind2 (mfe ctx e,
adamc@12 303 fn e' =>
adamc@29 304 S.map2 (mfc ctx t,
adamc@29 305 fn t' =>
adamc@29 306 (x', e', t')))))
adamc@12 307 xes,
adamc@12 308 fn xes' =>
adamc@12 309 (ERecord xes', loc))
adamc@12 310 | EField (e, c, {field, rest}) =>
adamc@12 311 S.bind2 (mfe ctx e,
adamc@12 312 fn e' =>
adamc@12 313 S.bind2 (mfc ctx c,
adamc@12 314 fn c' =>
adamc@12 315 S.bind2 (mfc ctx field,
adamc@12 316 fn field' =>
adamc@12 317 S.map2 (mfc ctx rest,
adamc@12 318 fn rest' =>
adamc@12 319 (EField (e', c', {field = field', rest = rest'}), loc)))))
adamc@149 320 | ECut (e, c, {field, rest}) =>
adamc@149 321 S.bind2 (mfe ctx e,
adamc@149 322 fn e' =>
adamc@149 323 S.bind2 (mfc ctx c,
adamc@149 324 fn c' =>
adamc@149 325 S.bind2 (mfc ctx field,
adamc@149 326 fn field' =>
adamc@149 327 S.map2 (mfc ctx rest,
adamc@149 328 fn rest' =>
adamc@149 329 (ECut (e', c', {field = field', rest = rest'}), loc)))))
adamc@12 330
adamc@71 331 | EFold k =>
adamc@71 332 S.map2 (mfk k,
adamc@71 333 fn k' =>
adamc@71 334 (EFold k', loc))
adamc@71 335
adamc@182 336 | ECase (e, pes, {disc, result}) =>
adamc@171 337 S.bind2 (mfe ctx e,
adamc@171 338 fn e' =>
adamc@171 339 S.bind2 (ListUtil.mapfold (fn (p, e) =>
adamc@171 340 S.map2 (mfe ctx e,
adamc@171 341 fn e' => (p, e'))) pes,
adamc@171 342 fn pes' =>
adamc@182 343 S.bind2 (mfc ctx disc,
adamc@182 344 fn disc' =>
adamc@182 345 S.map2 (mfc ctx result,
adamc@182 346 fn result' =>
adamc@182 347 (ECase (e', pes', {disc = disc', result = result'}), loc)))))
adamc@171 348
adamc@10 349 | EError => S.return2 eAll
adamc@10 350 in
adamc@10 351 mfe
adamc@10 352 end
adamc@10 353
adamc@11 354 fun mapfold {kind = fk, con = fc, exp = fe} =
adamc@11 355 mapfoldB {kind = fk,
adamc@11 356 con = fn () => fc,
adamc@11 357 exp = fn () => fe,
adamc@11 358 bind = fn ((), _) => ()} ()
adamc@11 359
adamc@10 360 fun exists {kind, con, exp} k =
adamc@10 361 case mapfold {kind = fn k => fn () =>
adamc@10 362 if kind k then
adamc@10 363 S.Return ()
adamc@10 364 else
adamc@10 365 S.Continue (k, ()),
adamc@10 366 con = fn c => fn () =>
adamc@10 367 if con c then
adamc@10 368 S.Return ()
adamc@10 369 else
adamc@10 370 S.Continue (c, ()),
adamc@10 371 exp = fn e => fn () =>
adamc@10 372 if exp e then
adamc@10 373 S.Return ()
adamc@10 374 else
adamc@10 375 S.Continue (e, ())} k () of
adamc@10 376 S.Return _ => true
adamc@10 377 | S.Continue _ => false
adamc@10 378
adamc@10 379 end
adamc@10 380
adamc@34 381 structure Sgn = struct
adamc@34 382
adamc@34 383 datatype binder =
adamc@34 384 RelC of string * Elab.kind
adamc@34 385 | NamedC of string * Elab.kind
adamc@34 386 | Str of string * Elab.sgn
adamc@59 387 | Sgn of string * Elab.sgn
adamc@34 388
adamc@34 389 fun mapfoldB {kind, con, sgn_item, sgn, bind} =
adamc@34 390 let
adamc@34 391 fun bind' (ctx, b) =
adamc@34 392 let
adamc@34 393 val b' = case b of
adamc@34 394 Con.Rel x => RelC x
adamc@34 395 | Con.Named x => NamedC x
adamc@34 396 in
adamc@34 397 bind (ctx, b')
adamc@34 398 end
adamc@34 399 val con = Con.mapfoldB {kind = kind, con = con, bind = bind'}
adamc@34 400
adamc@34 401 val kind = Kind.mapfold kind
adamc@34 402
adamc@34 403 fun sgi ctx si acc =
adamc@34 404 S.bindP (sgi' ctx si acc, sgn_item ctx)
adamc@34 405
adamc@156 406 and sgi' ctx (siAll as (si, loc)) =
adamc@34 407 case si of
adamc@34 408 SgiConAbs (x, n, k) =>
adamc@34 409 S.map2 (kind k,
adamc@34 410 fn k' =>
adamc@34 411 (SgiConAbs (x, n, k'), loc))
adamc@34 412 | SgiCon (x, n, k, c) =>
adamc@34 413 S.bind2 (kind k,
adamc@34 414 fn k' =>
adamc@34 415 S.map2 (con ctx c,
adamc@34 416 fn c' =>
adamc@34 417 (SgiCon (x, n, k', c'), loc)))
adamc@191 418 | SgiDatatype (x, n, xs, xncs) =>
adamc@156 419 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@156 420 case c of
adamc@156 421 NONE => S.return2 (x, n, c)
adamc@156 422 | SOME c =>
adamc@156 423 S.map2 (con ctx c,
adamc@156 424 fn c' => (x, n, SOME c'))) xncs,
adamc@156 425 fn xncs' =>
adamc@191 426 (SgiDatatype (x, n, xs, xncs'), loc))
adamc@191 427 | SgiDatatypeImp (x, n, m1, ms, s, xs, xncs) =>
adamc@162 428 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@162 429 case c of
adamc@162 430 NONE => S.return2 (x, n, c)
adamc@162 431 | SOME c =>
adamc@162 432 S.map2 (con ctx c,
adamc@162 433 fn c' => (x, n, SOME c'))) xncs,
adamc@162 434 fn xncs' =>
adamc@191 435 (SgiDatatypeImp (x, n, m1, ms, s, xs, xncs'), loc))
adamc@34 436 | SgiVal (x, n, c) =>
adamc@34 437 S.map2 (con ctx c,
adamc@34 438 fn c' =>
adamc@34 439 (SgiVal (x, n, c'), loc))
adamc@34 440 | SgiStr (x, n, s) =>
adamc@34 441 S.map2 (sg ctx s,
adamc@34 442 fn s' =>
adamc@34 443 (SgiStr (x, n, s'), loc))
adamc@59 444 | SgiSgn (x, n, s) =>
adamc@59 445 S.map2 (sg ctx s,
adamc@59 446 fn s' =>
adamc@59 447 (SgiSgn (x, n, s'), loc))
adamc@88 448 | SgiConstraint (c1, c2) =>
adamc@88 449 S.bind2 (con ctx c1,
adamc@88 450 fn c1' =>
adamc@88 451 S.map2 (con ctx c2,
adamc@88 452 fn c2' =>
adamc@88 453 (SgiConstraint (c1', c2'), loc)))
adamc@205 454 | SgiTable (tn, x, n, c) =>
adamc@203 455 S.map2 (con ctx c,
adamc@203 456 fn c' =>
adamc@205 457 (SgiTable (tn, x, n, c'), loc))
adamc@34 458
adamc@34 459 and sg ctx s acc =
adamc@34 460 S.bindP (sg' ctx s acc, sgn ctx)
adamc@34 461
adamc@34 462 and sg' ctx (sAll as (s, loc)) =
adamc@34 463 case s of
adamc@34 464 SgnConst sgis =>
adamc@34 465 S.map2 (ListUtil.mapfoldB (fn (ctx, si) =>
adamc@34 466 (case #1 si of
adamc@34 467 SgiConAbs (x, _, k) =>
adamc@34 468 bind (ctx, NamedC (x, k))
adamc@34 469 | SgiCon (x, _, k, _) =>
adamc@34 470 bind (ctx, NamedC (x, k))
adamc@191 471 | SgiDatatype (x, n, _, xncs) =>
adamc@156 472 bind (ctx, NamedC (x, (KType, loc)))
adamc@191 473 | SgiDatatypeImp (x, _, _, _, _, _, _) =>
adamc@156 474 bind (ctx, NamedC (x, (KType, loc)))
adamc@34 475 | SgiVal _ => ctx
adamc@34 476 | SgiStr (x, _, sgn) =>
adamc@59 477 bind (ctx, Str (x, sgn))
adamc@59 478 | SgiSgn (x, _, sgn) =>
adamc@88 479 bind (ctx, Sgn (x, sgn))
adamc@203 480 | SgiConstraint _ => ctx
adamc@203 481 | SgiTable _ => ctx,
adamc@34 482 sgi ctx si)) ctx sgis,
adamc@34 483 fn sgis' =>
adamc@34 484 (SgnConst sgis', loc))
adamc@34 485
adamc@34 486 | SgnVar _ => S.return2 sAll
adamc@41 487 | SgnFun (m, n, s1, s2) =>
adamc@41 488 S.bind2 (sg ctx s1,
adamc@41 489 fn s1' =>
adamc@41 490 S.map2 (sg (bind (ctx, Str (m, s1'))) s2,
adamc@41 491 fn s2' =>
adamc@41 492 (SgnFun (m, n, s1', s2'), loc)))
adamc@59 493 | SgnProj _ => S.return2 sAll
adamc@42 494 | SgnWhere (sgn, x, c) =>
adamc@42 495 S.bind2 (sg ctx sgn,
adamc@42 496 fn sgn' =>
adamc@42 497 S.map2 (con ctx c,
adamc@42 498 fn c' =>
adamc@42 499 (SgnWhere (sgn', x, c'), loc)))
adamc@34 500 | SgnError => S.return2 sAll
adamc@34 501 in
adamc@34 502 sg
adamc@34 503 end
adamc@34 504
adamc@34 505 fun mapfold {kind, con, sgn_item, sgn} =
adamc@34 506 mapfoldB {kind = kind,
adamc@34 507 con = fn () => con,
adamc@34 508 sgn_item = fn () => sgn_item,
adamc@34 509 sgn = fn () => sgn,
adamc@34 510 bind = fn ((), _) => ()} ()
adamc@34 511
adamc@34 512 fun map {kind, con, sgn_item, sgn} s =
adamc@34 513 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@34 514 con = fn c => fn () => S.Continue (con c, ()),
adamc@34 515 sgn_item = fn si => fn () => S.Continue (sgn_item si, ()),
adamc@34 516 sgn = fn s => fn () => S.Continue (sgn s, ())} s () of
adamc@34 517 S.Return () => raise Fail "Elab_util.Sgn.map"
adamc@34 518 | S.Continue (s, ()) => s
adamc@34 519
adamc@2 520 end
adamc@34 521
adamc@76 522 structure Decl = struct
adamc@76 523
adamc@76 524 datatype binder =
adamc@76 525 RelC of string * Elab.kind
adamc@76 526 | NamedC of string * Elab.kind
adamc@76 527 | RelE of string * Elab.con
adamc@76 528 | NamedE of string * Elab.con
adamc@76 529 | Str of string * Elab.sgn
adamc@76 530 | Sgn of string * Elab.sgn
adamc@76 531
adamc@76 532 fun mapfoldB {kind = fk, con = fc, exp = fe, sgn_item = fsgi, sgn = fsg, str = fst, decl = fd, bind} =
adamc@76 533 let
adamc@76 534 val mfk = Kind.mapfold fk
adamc@76 535
adamc@76 536 fun bind' (ctx, b) =
adamc@76 537 let
adamc@76 538 val b' = case b of
adamc@76 539 Con.Rel x => RelC x
adamc@76 540 | Con.Named x => NamedC x
adamc@76 541 in
adamc@76 542 bind (ctx, b')
adamc@76 543 end
adamc@76 544 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@76 545
adamc@76 546 fun bind' (ctx, b) =
adamc@76 547 let
adamc@76 548 val b' = case b of
adamc@76 549 Exp.RelC x => RelC x
adamc@76 550 | Exp.NamedC x => NamedC x
adamc@76 551 | Exp.RelE x => RelE x
adamc@76 552 | Exp.NamedE x => NamedE x
adamc@76 553 in
adamc@76 554 bind (ctx, b')
adamc@76 555 end
adamc@76 556 val mfe = Exp.mapfoldB {kind = fk, con = fc, exp = fe, bind = bind'}
adamc@76 557
adamc@76 558 fun bind' (ctx, b) =
adamc@76 559 let
adamc@76 560 val b' = case b of
adamc@76 561 Sgn.RelC x => RelC x
adamc@76 562 | Sgn.NamedC x => NamedC x
adamc@76 563 | Sgn.Sgn x => Sgn x
adamc@76 564 | Sgn.Str x => Str x
adamc@76 565 in
adamc@76 566 bind (ctx, b')
adamc@76 567 end
adamc@76 568 val mfsg = Sgn.mapfoldB {kind = fk, con = fc, sgn_item = fsgi, sgn = fsg, bind = bind'}
adamc@76 569
adamc@76 570 fun mfst ctx str acc =
adamc@76 571 S.bindP (mfst' ctx str acc, fst ctx)
adamc@76 572
adamc@76 573 and mfst' ctx (strAll as (str, loc)) =
adamc@76 574 case str of
adamc@76 575 StrConst ds =>
adamc@76 576 S.map2 (ListUtil.mapfoldB (fn (ctx, d) =>
adamc@76 577 (case #1 d of
adamc@76 578 DCon (x, _, k, _) =>
adamc@76 579 bind (ctx, NamedC (x, k))
adamc@191 580 | DDatatype (x, n, xs, xncs) =>
adamc@156 581 let
adamc@156 582 val ctx = bind (ctx, NamedC (x, (KType, loc)))
adamc@156 583 in
adamc@156 584 foldl (fn ((x, _, co), ctx) =>
adamc@156 585 let
adamc@156 586 val t =
adamc@156 587 case co of
adamc@156 588 NONE => CNamed n
adamc@156 589 | SOME t => TFun (t, (CNamed n, loc))
adamc@191 590
adamc@191 591 val k = (KType, loc)
adamc@191 592 val t = (t, loc)
adamc@191 593 val t = foldr (fn (x, t) =>
adamc@191 594 (TCFun (Explicit,
adamc@191 595 x,
adamc@191 596 k,
adamc@191 597 t), loc))
adamc@191 598 t xs
adamc@156 599 in
adamc@191 600 bind (ctx, NamedE (x, t))
adamc@156 601 end)
adamc@156 602 ctx xncs
adamc@156 603 end
adamc@191 604 | DDatatypeImp (x, n, m, ms, x', _, _) =>
adamc@156 605 bind (ctx, NamedC (x, (KType, loc)))
adamc@76 606 | DVal (x, _, c, _) =>
adamc@76 607 bind (ctx, NamedE (x, c))
adamc@123 608 | DValRec vis =>
adamc@123 609 foldl (fn ((x, _, c, _), ctx) => bind (ctx, NamedE (x, c))) ctx vis
adamc@76 610 | DSgn (x, _, sgn) =>
adamc@76 611 bind (ctx, Sgn (x, sgn))
adamc@76 612 | DStr (x, _, sgn, _) =>
adamc@76 613 bind (ctx, Str (x, sgn))
adamc@76 614 | DFfiStr (x, _, sgn) =>
adamc@88 615 bind (ctx, Str (x, sgn))
adamc@100 616 | DConstraint _ => ctx
adamc@203 617 | DExport _ => ctx
adamc@205 618 | DTable (tn, x, n, c) =>
adamc@205 619 bind (ctx, NamedE (x, (CApp ((CModProj (n, [], "table"), loc),
adamc@205 620 c), loc))),
adamc@76 621 mfd ctx d)) ctx ds,
adamc@76 622 fn ds' => (StrConst ds', loc))
adamc@76 623 | StrVar _ => S.return2 strAll
adamc@76 624 | StrProj (str, x) =>
adamc@76 625 S.map2 (mfst ctx str,
adamc@76 626 fn str' =>
adamc@76 627 (StrProj (str', x), loc))
adamc@76 628 | StrFun (x, n, sgn1, sgn2, str) =>
adamc@76 629 S.bind2 (mfsg ctx sgn1,
adamc@76 630 fn sgn1' =>
adamc@76 631 S.bind2 (mfsg ctx sgn2,
adamc@76 632 fn sgn2' =>
adamc@76 633 S.map2 (mfst ctx str,
adamc@76 634 fn str' =>
adamc@76 635 (StrFun (x, n, sgn1', sgn2', str'), loc))))
adamc@76 636 | StrApp (str1, str2) =>
adamc@76 637 S.bind2 (mfst ctx str1,
adamc@76 638 fn str1' =>
adamc@76 639 S.map2 (mfst ctx str2,
adamc@76 640 fn str2' =>
adamc@76 641 (StrApp (str1', str2'), loc)))
adamc@76 642 | StrError => S.return2 strAll
adamc@76 643
adamc@76 644 and mfd ctx d acc =
adamc@76 645 S.bindP (mfd' ctx d acc, fd ctx)
adamc@76 646
adamc@76 647 and mfd' ctx (dAll as (d, loc)) =
adamc@76 648 case d of
adamc@76 649 DCon (x, n, k, c) =>
adamc@76 650 S.bind2 (mfk k,
adamc@76 651 fn k' =>
adamc@76 652 S.map2 (mfc ctx c,
adamc@76 653 fn c' =>
adamc@76 654 (DCon (x, n, k', c'), loc)))
adamc@191 655 | DDatatype (x, n, xs, xncs) =>
adamc@156 656 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@156 657 case c of
adamc@156 658 NONE => S.return2 (x, n, c)
adamc@156 659 | SOME c =>
adamc@156 660 S.map2 (mfc ctx c,
adamc@156 661 fn c' => (x, n, SOME c'))) xncs,
adamc@156 662 fn xncs' =>
adamc@191 663 (DDatatype (x, n, xs, xncs'), loc))
adamc@191 664 | DDatatypeImp (x, n, m1, ms, s, xs, xncs) =>
adamc@162 665 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@162 666 case c of
adamc@162 667 NONE => S.return2 (x, n, c)
adamc@162 668 | SOME c =>
adamc@162 669 S.map2 (mfc ctx c,
adamc@162 670 fn c' => (x, n, SOME c'))) xncs,
adamc@162 671 fn xncs' =>
adamc@191 672 (DDatatypeImp (x, n, m1, ms, s, xs, xncs'), loc))
adamc@123 673 | DVal vi =>
adamc@123 674 S.map2 (mfvi ctx vi,
adamc@123 675 fn vi' =>
adamc@123 676 (DVal vi', loc))
adamc@123 677 | DValRec vis =>
adamc@123 678 S.map2 (ListUtil.mapfold (mfvi ctx) vis,
adamc@123 679 fn vis' =>
adamc@123 680 (DValRec vis', loc))
adamc@76 681 | DSgn (x, n, sgn) =>
adamc@76 682 S.map2 (mfsg ctx sgn,
adamc@76 683 fn sgn' =>
adamc@76 684 (DSgn (x, n, sgn'), loc))
adamc@76 685 | DStr (x, n, sgn, str) =>
adamc@76 686 S.bind2 (mfsg ctx sgn,
adamc@76 687 fn sgn' =>
adamc@76 688 S.map2 (mfst ctx str,
adamc@76 689 fn str' =>
adamc@76 690 (DStr (x, n, sgn', str'), loc)))
adamc@76 691 | DFfiStr (x, n, sgn) =>
adamc@76 692 S.map2 (mfsg ctx sgn,
adamc@76 693 fn sgn' =>
adamc@76 694 (DFfiStr (x, n, sgn'), loc))
adamc@88 695 | DConstraint (c1, c2) =>
adamc@88 696 S.bind2 (mfc ctx c1,
adamc@88 697 fn c1' =>
adamc@88 698 S.map2 (mfc ctx c2,
adamc@88 699 fn c2' =>
adamc@88 700 (DConstraint (c1', c2'), loc)))
adamc@109 701 | DExport (en, sgn, str) =>
adamc@109 702 S.bind2 (mfsg ctx sgn,
adamc@109 703 fn sgn' =>
adamc@109 704 S.map2 (mfst ctx str,
adamc@109 705 fn str' =>
adamc@109 706 (DExport (en, sgn', str'), loc)))
adamc@123 707
adamc@205 708 | DTable (tn, x, n, c) =>
adamc@203 709 S.map2 (mfc ctx c,
adamc@203 710 fn c' =>
adamc@205 711 (DTable (tn, x, n, c'), loc))
adamc@203 712
adamc@123 713 and mfvi ctx (x, n, c, e) =
adamc@123 714 S.bind2 (mfc ctx c,
adamc@123 715 fn c' =>
adamc@123 716 S.map2 (mfe ctx e,
adamc@123 717 fn e' =>
adamc@123 718 (x, n, c', e')))
adamc@76 719 in
adamc@76 720 mfd
adamc@76 721 end
adamc@76 722
adamc@76 723 fun mapfold {kind, con, exp, sgn_item, sgn, str, decl} =
adamc@76 724 mapfoldB {kind = kind,
adamc@76 725 con = fn () => con,
adamc@76 726 exp = fn () => exp,
adamc@76 727 sgn_item = fn () => sgn_item,
adamc@76 728 sgn = fn () => sgn,
adamc@76 729 str = fn () => str,
adamc@76 730 decl = fn () => decl,
adamc@76 731 bind = fn ((), _) => ()} ()
adamc@76 732
adamc@76 733 fun exists {kind, con, exp, sgn_item, sgn, str, decl} k =
adamc@76 734 case mapfold {kind = fn k => fn () =>
adamc@76 735 if kind k then
adamc@76 736 S.Return ()
adamc@76 737 else
adamc@76 738 S.Continue (k, ()),
adamc@76 739 con = fn c => fn () =>
adamc@76 740 if con c then
adamc@76 741 S.Return ()
adamc@76 742 else
adamc@76 743 S.Continue (c, ()),
adamc@76 744 exp = fn e => fn () =>
adamc@76 745 if exp e then
adamc@76 746 S.Return ()
adamc@76 747 else
adamc@76 748 S.Continue (e, ()),
adamc@76 749 sgn_item = fn sgi => fn () =>
adamc@76 750 if sgn_item sgi then
adamc@76 751 S.Return ()
adamc@76 752 else
adamc@76 753 S.Continue (sgi, ()),
adamc@76 754 sgn = fn x => fn () =>
adamc@76 755 if sgn x then
adamc@76 756 S.Return ()
adamc@76 757 else
adamc@76 758 S.Continue (x, ()),
adamc@76 759 str = fn x => fn () =>
adamc@76 760 if str x then
adamc@76 761 S.Return ()
adamc@76 762 else
adamc@76 763 S.Continue (x, ()),
adamc@76 764 decl = fn x => fn () =>
adamc@76 765 if decl x then
adamc@76 766 S.Return ()
adamc@76 767 else
adamc@76 768 S.Continue (x, ())} k () of
adamc@76 769 S.Return _ => true
adamc@76 770 | S.Continue _ => false
adamc@76 771
adamc@76 772 fun search {kind, con, exp, sgn_item, sgn, str, decl} k =
adamc@76 773 case mapfold {kind = fn x => fn () =>
adamc@76 774 case kind x of
adamc@76 775 NONE => S.Continue (x, ())
adamc@76 776 | SOME v => S.Return v,
adamc@76 777
adamc@76 778 con = fn x => fn () =>
adamc@76 779 case con x of
adamc@76 780 NONE => S.Continue (x, ())
adamc@76 781 | SOME v => S.Return v,
adamc@76 782
adamc@76 783 exp = fn x => fn () =>
adamc@76 784 case exp x of
adamc@76 785 NONE => S.Continue (x, ())
adamc@76 786 | SOME v => S.Return v,
adamc@76 787
adamc@76 788 sgn_item = fn x => fn () =>
adamc@76 789 case sgn_item x of
adamc@76 790 NONE => S.Continue (x, ())
adamc@76 791 | SOME v => S.Return v,
adamc@76 792
adamc@76 793 sgn = fn x => fn () =>
adamc@76 794 case sgn x of
adamc@76 795 NONE => S.Continue (x, ())
adamc@76 796 | SOME v => S.Return v,
adamc@76 797
adamc@76 798 str = fn x => fn () =>
adamc@76 799 case str x of
adamc@76 800 NONE => S.Continue (x, ())
adamc@76 801 | SOME v => S.Return v,
adamc@76 802
adamc@76 803 decl = fn x => fn () =>
adamc@76 804 case decl x of
adamc@76 805 NONE => S.Continue (x, ())
adamc@76 806 | SOME v => S.Return v
adamc@76 807
adamc@76 808 } k () of
adamc@76 809 S.Return x => SOME x
adamc@76 810 | S.Continue _ => NONE
adamc@76 811
adamc@34 812 end
adamc@76 813
adamc@76 814 end