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annotate src/elab_util.sml @ 156:34ccd7d2bea8

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Start of datatype support
author Adam Chlipala <adamc@hcoop.net>
date Thu, 24 Jul 2008 15:02:03 -0400
parents 7420fa18d657
children 06a98129b23f
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@2 32 structure S = Search
adamc@2 33
adamc@2 34 structure Kind = struct
adamc@2 35
adamc@6 36 fun mapfold f =
adamc@2 37 let
adamc@2 38 fun mfk k acc =
adamc@2 39 S.bindP (mfk' k acc, f)
adamc@2 40
adamc@2 41 and mfk' (kAll as (k, loc)) =
adamc@2 42 case k of
adamc@2 43 KType => S.return2 kAll
adamc@2 44
adamc@2 45 | KArrow (k1, k2) =>
adamc@2 46 S.bind2 (mfk k1,
adamc@2 47 fn k1' =>
adamc@2 48 S.map2 (mfk k2,
adamc@2 49 fn k2' =>
adamc@2 50 (KArrow (k1', k2'), loc)))
adamc@2 51
adamc@2 52 | KName => S.return2 kAll
adamc@2 53
adamc@2 54 | KRecord k =>
adamc@2 55 S.map2 (mfk k,
adamc@2 56 fn k' =>
adamc@2 57 (KRecord k', loc))
adamc@2 58
adamc@82 59 | KUnit => S.return2 kAll
adamc@82 60
adamc@2 61 | KError => S.return2 kAll
adamc@2 62
adamc@76 63 | KUnif (_, _, ref (SOME k)) => mfk' k
adamc@2 64 | KUnif _ => S.return2 kAll
adamc@2 65 in
adamc@2 66 mfk
adamc@2 67 end
adamc@2 68
adamc@2 69 fun exists f k =
adamc@6 70 case mapfold (fn k => fn () =>
adamc@6 71 if f k then
adamc@6 72 S.Return ()
adamc@6 73 else
adamc@6 74 S.Continue (k, ())) k () of
adamc@6 75 S.Return _ => true
adamc@6 76 | S.Continue _ => false
adamc@6 77
adamc@6 78 end
adamc@6 79
adamc@6 80 structure Con = struct
adamc@6 81
adamc@11 82 datatype binder =
adamc@11 83 Rel of string * Elab.kind
adamc@11 84 | Named of string * Elab.kind
adamc@11 85
adamc@11 86 fun mapfoldB {kind = fk, con = fc, bind} =
adamc@6 87 let
adamc@6 88 val mfk = Kind.mapfold fk
adamc@6 89
adamc@11 90 fun mfc ctx c acc =
adamc@11 91 S.bindP (mfc' ctx c acc, fc ctx)
adamc@6 92
adamc@11 93 and mfc' ctx (cAll as (c, loc)) =
adamc@6 94 case c of
adamc@6 95 TFun (c1, c2) =>
adamc@11 96 S.bind2 (mfc ctx c1,
adamc@6 97 fn c1' =>
adamc@11 98 S.map2 (mfc ctx c2,
adamc@6 99 fn c2' =>
adamc@6 100 (TFun (c1', c2'), loc)))
adamc@6 101 | TCFun (e, x, k, c) =>
adamc@6 102 S.bind2 (mfk k,
adamc@6 103 fn k' =>
adamc@11 104 S.map2 (mfc (bind (ctx, Rel (x, k))) c,
adamc@6 105 fn c' =>
adamc@6 106 (TCFun (e, x, k', c'), loc)))
adamc@85 107 | TDisjoint (c1, c2, c3) =>
adamc@85 108 S.bind2 (mfc ctx c1,
adamc@85 109 fn c1' =>
adamc@85 110 S.bind2 (mfc ctx c2,
adamc@85 111 fn c2' =>
adamc@85 112 S.map2 (mfc ctx c3,
adamc@85 113 fn c3' =>
adamc@85 114 (TDisjoint (c1', c2', c3'), loc))))
adamc@6 115 | TRecord c =>
adamc@11 116 S.map2 (mfc ctx c,
adamc@6 117 fn c' =>
adamc@6 118 (TRecord c', loc))
adamc@6 119
adamc@6 120 | CRel _ => S.return2 cAll
adamc@6 121 | CNamed _ => S.return2 cAll
adamc@34 122 | CModProj _ => S.return2 cAll
adamc@6 123 | CApp (c1, c2) =>
adamc@11 124 S.bind2 (mfc ctx c1,
adamc@6 125 fn c1' =>
adamc@11 126 S.map2 (mfc ctx c2,
adamc@6 127 fn c2' =>
adamc@6 128 (CApp (c1', c2'), loc)))
adamc@8 129 | CAbs (x, k, c) =>
adamc@6 130 S.bind2 (mfk k,
adamc@6 131 fn k' =>
adamc@11 132 S.map2 (mfc (bind (ctx, Rel (x, k))) c,
adamc@6 133 fn c' =>
adamc@8 134 (CAbs (x, k', c'), loc)))
adamc@84 135 | CDisjoint (c1, c2, c3) =>
adamc@84 136 S.bind2 (mfc ctx c1,
adamc@84 137 fn c1' =>
adamc@84 138 S.bind2 (mfc ctx c2,
adamc@84 139 fn c2' =>
adamc@84 140 S.map2 (mfc ctx c3,
adamc@84 141 fn c3' =>
adamc@84 142 (CDisjoint (c1', c2', c3'), loc))))
adamc@6 143
adamc@6 144 | CName _ => S.return2 cAll
adamc@6 145
adamc@6 146 | CRecord (k, xcs) =>
adamc@6 147 S.bind2 (mfk k,
adamc@6 148 fn k' =>
adamc@6 149 S.map2 (ListUtil.mapfold (fn (x, c) =>
adamc@11 150 S.bind2 (mfc ctx x,
adamc@6 151 fn x' =>
adamc@11 152 S.map2 (mfc ctx c,
adamc@6 153 fn c' =>
adamc@6 154 (x', c'))))
adamc@6 155 xcs,
adamc@6 156 fn xcs' =>
adamc@6 157 (CRecord (k', xcs'), loc)))
adamc@6 158 | CConcat (c1, c2) =>
adamc@11 159 S.bind2 (mfc ctx c1,
adamc@6 160 fn c1' =>
adamc@11 161 S.map2 (mfc ctx c2,
adamc@6 162 fn c2' =>
adamc@6 163 (CConcat (c1', c2'), loc)))
adamc@67 164 | CFold (k1, k2) =>
adamc@67 165 S.bind2 (mfk k1,
adamc@67 166 fn k1' =>
adamc@67 167 S.map2 (mfk k2,
adamc@67 168 fn k2' =>
adamc@67 169 (CFold (k1', k2'), loc)))
adamc@6 170
adamc@82 171 | CUnit => S.return2 cAll
adamc@82 172
adamc@6 173 | CError => S.return2 cAll
adamc@76 174 | CUnif (_, _, _, ref (SOME c)) => mfc' ctx c
adamc@6 175 | CUnif _ => S.return2 cAll
adamc@6 176 in
adamc@6 177 mfc
adamc@6 178 end
adamc@6 179
adamc@11 180 fun mapfold {kind = fk, con = fc} =
adamc@11 181 mapfoldB {kind = fk,
adamc@11 182 con = fn () => fc,
adamc@11 183 bind = fn ((), _) => ()} ()
adamc@11 184
adamc@11 185 fun mapB {kind, con, bind} ctx c =
adamc@11 186 case mapfoldB {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@11 187 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@11 188 bind = bind} ctx c () of
adamc@11 189 S.Continue (c, ()) => c
adamc@34 190 | S.Return _ => raise Fail "ElabUtil.Con.mapB: Impossible"
adamc@34 191
adamc@34 192 fun map {kind, con} s =
adamc@34 193 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@34 194 con = fn c => fn () => S.Continue (con c, ())} s () of
adamc@34 195 S.Return () => raise Fail "ElabUtil.Con.map: Impossible"
adamc@34 196 | S.Continue (s, ()) => s
adamc@11 197
adamc@6 198 fun exists {kind, con} k =
adamc@6 199 case mapfold {kind = fn k => fn () =>
adamc@6 200 if kind k then
adamc@6 201 S.Return ()
adamc@6 202 else
adamc@6 203 S.Continue (k, ()),
adamc@6 204 con = fn c => fn () =>
adamc@6 205 if con c then
adamc@6 206 S.Return ()
adamc@6 207 else
adamc@6 208 S.Continue (c, ())} k () of
adamc@2 209 S.Return _ => true
adamc@2 210 | S.Continue _ => false
adamc@2 211
adamc@2 212 end
adamc@2 213
adamc@10 214 structure Exp = struct
adamc@10 215
adamc@11 216 datatype binder =
adamc@11 217 RelC of string * Elab.kind
adamc@11 218 | NamedC of string * Elab.kind
adamc@11 219 | RelE of string * Elab.con
adamc@11 220 | NamedE of string * Elab.con
adamc@11 221
adamc@11 222 fun mapfoldB {kind = fk, con = fc, exp = fe, bind} =
adamc@10 223 let
adamc@10 224 val mfk = Kind.mapfold fk
adamc@10 225
adamc@11 226 fun bind' (ctx, b) =
adamc@11 227 let
adamc@11 228 val b' = case b of
adamc@11 229 Con.Rel x => RelC x
adamc@11 230 | Con.Named x => NamedC x
adamc@11 231 in
adamc@11 232 bind (ctx, b')
adamc@11 233 end
adamc@11 234 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@10 235
adamc@11 236 fun mfe ctx e acc =
adamc@11 237 S.bindP (mfe' ctx e acc, fe ctx)
adamc@11 238
adamc@11 239 and mfe' ctx (eAll as (e, loc)) =
adamc@10 240 case e of
adamc@14 241 EPrim _ => S.return2 eAll
adamc@14 242 | ERel _ => S.return2 eAll
adamc@10 243 | ENamed _ => S.return2 eAll
adamc@34 244 | EModProj _ => S.return2 eAll
adamc@10 245 | EApp (e1, e2) =>
adamc@11 246 S.bind2 (mfe ctx e1,
adamc@10 247 fn e1' =>
adamc@11 248 S.map2 (mfe ctx e2,
adamc@10 249 fn e2' =>
adamc@10 250 (EApp (e1', e2'), loc)))
adamc@26 251 | EAbs (x, dom, ran, e) =>
adamc@26 252 S.bind2 (mfc ctx dom,
adamc@26 253 fn dom' =>
adamc@26 254 S.bind2 (mfc ctx ran,
adamc@26 255 fn ran' =>
adamc@26 256 S.map2 (mfe (bind (ctx, RelE (x, dom'))) e,
adamc@26 257 fn e' =>
adamc@26 258 (EAbs (x, dom', ran', e'), loc))))
adamc@26 259
adamc@10 260 | ECApp (e, c) =>
adamc@11 261 S.bind2 (mfe ctx e,
adamc@10 262 fn e' =>
adamc@11 263 S.map2 (mfc ctx c,
adamc@10 264 fn c' =>
adamc@10 265 (ECApp (e', c'), loc)))
adamc@10 266 | ECAbs (expl, x, k, e) =>
adamc@10 267 S.bind2 (mfk k,
adamc@10 268 fn k' =>
adamc@11 269 S.map2 (mfe (bind (ctx, RelC (x, k))) e,
adamc@10 270 fn e' =>
adamc@10 271 (ECAbs (expl, x, k', e'), loc)))
adamc@10 272
adamc@12 273 | ERecord xes =>
adamc@29 274 S.map2 (ListUtil.mapfold (fn (x, e, t) =>
adamc@12 275 S.bind2 (mfc ctx x,
adamc@12 276 fn x' =>
adamc@29 277 S.bind2 (mfe ctx e,
adamc@12 278 fn e' =>
adamc@29 279 S.map2 (mfc ctx t,
adamc@29 280 fn t' =>
adamc@29 281 (x', e', t')))))
adamc@12 282 xes,
adamc@12 283 fn xes' =>
adamc@12 284 (ERecord xes', loc))
adamc@12 285 | EField (e, c, {field, rest}) =>
adamc@12 286 S.bind2 (mfe ctx e,
adamc@12 287 fn e' =>
adamc@12 288 S.bind2 (mfc ctx c,
adamc@12 289 fn c' =>
adamc@12 290 S.bind2 (mfc ctx field,
adamc@12 291 fn field' =>
adamc@12 292 S.map2 (mfc ctx rest,
adamc@12 293 fn rest' =>
adamc@12 294 (EField (e', c', {field = field', rest = rest'}), loc)))))
adamc@149 295 | ECut (e, c, {field, rest}) =>
adamc@149 296 S.bind2 (mfe ctx e,
adamc@149 297 fn e' =>
adamc@149 298 S.bind2 (mfc ctx c,
adamc@149 299 fn c' =>
adamc@149 300 S.bind2 (mfc ctx field,
adamc@149 301 fn field' =>
adamc@149 302 S.map2 (mfc ctx rest,
adamc@149 303 fn rest' =>
adamc@149 304 (ECut (e', c', {field = field', rest = rest'}), loc)))))
adamc@12 305
adamc@71 306 | EFold k =>
adamc@71 307 S.map2 (mfk k,
adamc@71 308 fn k' =>
adamc@71 309 (EFold k', loc))
adamc@71 310
adamc@10 311 | EError => S.return2 eAll
adamc@10 312 in
adamc@10 313 mfe
adamc@10 314 end
adamc@10 315
adamc@11 316 fun mapfold {kind = fk, con = fc, exp = fe} =
adamc@11 317 mapfoldB {kind = fk,
adamc@11 318 con = fn () => fc,
adamc@11 319 exp = fn () => fe,
adamc@11 320 bind = fn ((), _) => ()} ()
adamc@11 321
adamc@10 322 fun exists {kind, con, exp} k =
adamc@10 323 case mapfold {kind = fn k => fn () =>
adamc@10 324 if kind k then
adamc@10 325 S.Return ()
adamc@10 326 else
adamc@10 327 S.Continue (k, ()),
adamc@10 328 con = fn c => fn () =>
adamc@10 329 if con c then
adamc@10 330 S.Return ()
adamc@10 331 else
adamc@10 332 S.Continue (c, ()),
adamc@10 333 exp = fn e => fn () =>
adamc@10 334 if exp e then
adamc@10 335 S.Return ()
adamc@10 336 else
adamc@10 337 S.Continue (e, ())} k () of
adamc@10 338 S.Return _ => true
adamc@10 339 | S.Continue _ => false
adamc@10 340
adamc@10 341 end
adamc@10 342
adamc@34 343 structure Sgn = struct
adamc@34 344
adamc@34 345 datatype binder =
adamc@34 346 RelC of string * Elab.kind
adamc@34 347 | NamedC of string * Elab.kind
adamc@34 348 | Str of string * Elab.sgn
adamc@59 349 | Sgn of string * Elab.sgn
adamc@34 350
adamc@34 351 fun mapfoldB {kind, con, sgn_item, sgn, bind} =
adamc@34 352 let
adamc@34 353 fun bind' (ctx, b) =
adamc@34 354 let
adamc@34 355 val b' = case b of
adamc@34 356 Con.Rel x => RelC x
adamc@34 357 | Con.Named x => NamedC x
adamc@34 358 in
adamc@34 359 bind (ctx, b')
adamc@34 360 end
adamc@34 361 val con = Con.mapfoldB {kind = kind, con = con, bind = bind'}
adamc@34 362
adamc@34 363 val kind = Kind.mapfold kind
adamc@34 364
adamc@34 365 fun sgi ctx si acc =
adamc@34 366 S.bindP (sgi' ctx si acc, sgn_item ctx)
adamc@34 367
adamc@156 368 and sgi' ctx (siAll as (si, loc)) =
adamc@34 369 case si of
adamc@34 370 SgiConAbs (x, n, k) =>
adamc@34 371 S.map2 (kind k,
adamc@34 372 fn k' =>
adamc@34 373 (SgiConAbs (x, n, k'), loc))
adamc@34 374 | SgiCon (x, n, k, c) =>
adamc@34 375 S.bind2 (kind k,
adamc@34 376 fn k' =>
adamc@34 377 S.map2 (con ctx c,
adamc@34 378 fn c' =>
adamc@34 379 (SgiCon (x, n, k', c'), loc)))
adamc@156 380 | SgiDatatype (x, n, xncs) =>
adamc@156 381 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@156 382 case c of
adamc@156 383 NONE => S.return2 (x, n, c)
adamc@156 384 | SOME c =>
adamc@156 385 S.map2 (con ctx c,
adamc@156 386 fn c' => (x, n, SOME c'))) xncs,
adamc@156 387 fn xncs' =>
adamc@156 388 (SgiDatatype (x, n, xncs'), loc))
adamc@156 389 | SgiDatatypeImp _ => S.return2 siAll
adamc@34 390 | SgiVal (x, n, c) =>
adamc@34 391 S.map2 (con ctx c,
adamc@34 392 fn c' =>
adamc@34 393 (SgiVal (x, n, c'), loc))
adamc@34 394 | SgiStr (x, n, s) =>
adamc@34 395 S.map2 (sg ctx s,
adamc@34 396 fn s' =>
adamc@34 397 (SgiStr (x, n, s'), loc))
adamc@59 398 | SgiSgn (x, n, s) =>
adamc@59 399 S.map2 (sg ctx s,
adamc@59 400 fn s' =>
adamc@59 401 (SgiSgn (x, n, s'), loc))
adamc@88 402 | SgiConstraint (c1, c2) =>
adamc@88 403 S.bind2 (con ctx c1,
adamc@88 404 fn c1' =>
adamc@88 405 S.map2 (con ctx c2,
adamc@88 406 fn c2' =>
adamc@88 407 (SgiConstraint (c1', c2'), loc)))
adamc@34 408
adamc@34 409 and sg ctx s acc =
adamc@34 410 S.bindP (sg' ctx s acc, sgn ctx)
adamc@34 411
adamc@34 412 and sg' ctx (sAll as (s, loc)) =
adamc@34 413 case s of
adamc@34 414 SgnConst sgis =>
adamc@34 415 S.map2 (ListUtil.mapfoldB (fn (ctx, si) =>
adamc@34 416 (case #1 si of
adamc@34 417 SgiConAbs (x, _, k) =>
adamc@34 418 bind (ctx, NamedC (x, k))
adamc@34 419 | SgiCon (x, _, k, _) =>
adamc@34 420 bind (ctx, NamedC (x, k))
adamc@156 421 | SgiDatatype (x, n, xncs) =>
adamc@156 422 bind (ctx, NamedC (x, (KType, loc)))
adamc@156 423 | SgiDatatypeImp (x, _, _, _, _) =>
adamc@156 424 bind (ctx, NamedC (x, (KType, loc)))
adamc@34 425 | SgiVal _ => ctx
adamc@34 426 | SgiStr (x, _, sgn) =>
adamc@59 427 bind (ctx, Str (x, sgn))
adamc@59 428 | SgiSgn (x, _, sgn) =>
adamc@88 429 bind (ctx, Sgn (x, sgn))
adamc@88 430 | SgiConstraint _ => ctx,
adamc@34 431 sgi ctx si)) ctx sgis,
adamc@34 432 fn sgis' =>
adamc@34 433 (SgnConst sgis', loc))
adamc@34 434
adamc@34 435 | SgnVar _ => S.return2 sAll
adamc@41 436 | SgnFun (m, n, s1, s2) =>
adamc@41 437 S.bind2 (sg ctx s1,
adamc@41 438 fn s1' =>
adamc@41 439 S.map2 (sg (bind (ctx, Str (m, s1'))) s2,
adamc@41 440 fn s2' =>
adamc@41 441 (SgnFun (m, n, s1', s2'), loc)))
adamc@59 442 | SgnProj _ => S.return2 sAll
adamc@42 443 | SgnWhere (sgn, x, c) =>
adamc@42 444 S.bind2 (sg ctx sgn,
adamc@42 445 fn sgn' =>
adamc@42 446 S.map2 (con ctx c,
adamc@42 447 fn c' =>
adamc@42 448 (SgnWhere (sgn', x, c'), loc)))
adamc@34 449 | SgnError => S.return2 sAll
adamc@34 450 in
adamc@34 451 sg
adamc@34 452 end
adamc@34 453
adamc@34 454 fun mapfold {kind, con, sgn_item, sgn} =
adamc@34 455 mapfoldB {kind = kind,
adamc@34 456 con = fn () => con,
adamc@34 457 sgn_item = fn () => sgn_item,
adamc@34 458 sgn = fn () => sgn,
adamc@34 459 bind = fn ((), _) => ()} ()
adamc@34 460
adamc@34 461 fun map {kind, con, sgn_item, sgn} s =
adamc@34 462 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@34 463 con = fn c => fn () => S.Continue (con c, ()),
adamc@34 464 sgn_item = fn si => fn () => S.Continue (sgn_item si, ()),
adamc@34 465 sgn = fn s => fn () => S.Continue (sgn s, ())} s () of
adamc@34 466 S.Return () => raise Fail "Elab_util.Sgn.map"
adamc@34 467 | S.Continue (s, ()) => s
adamc@34 468
adamc@2 469 end
adamc@34 470
adamc@76 471 structure Decl = struct
adamc@76 472
adamc@76 473 datatype binder =
adamc@76 474 RelC of string * Elab.kind
adamc@76 475 | NamedC of string * Elab.kind
adamc@76 476 | RelE of string * Elab.con
adamc@76 477 | NamedE of string * Elab.con
adamc@76 478 | Str of string * Elab.sgn
adamc@76 479 | Sgn of string * Elab.sgn
adamc@76 480
adamc@76 481 fun mapfoldB {kind = fk, con = fc, exp = fe, sgn_item = fsgi, sgn = fsg, str = fst, decl = fd, bind} =
adamc@76 482 let
adamc@76 483 val mfk = Kind.mapfold fk
adamc@76 484
adamc@76 485 fun bind' (ctx, b) =
adamc@76 486 let
adamc@76 487 val b' = case b of
adamc@76 488 Con.Rel x => RelC x
adamc@76 489 | Con.Named x => NamedC x
adamc@76 490 in
adamc@76 491 bind (ctx, b')
adamc@76 492 end
adamc@76 493 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@76 494
adamc@76 495 fun bind' (ctx, b) =
adamc@76 496 let
adamc@76 497 val b' = case b of
adamc@76 498 Exp.RelC x => RelC x
adamc@76 499 | Exp.NamedC x => NamedC x
adamc@76 500 | Exp.RelE x => RelE x
adamc@76 501 | Exp.NamedE x => NamedE x
adamc@76 502 in
adamc@76 503 bind (ctx, b')
adamc@76 504 end
adamc@76 505 val mfe = Exp.mapfoldB {kind = fk, con = fc, exp = fe, bind = bind'}
adamc@76 506
adamc@76 507 fun bind' (ctx, b) =
adamc@76 508 let
adamc@76 509 val b' = case b of
adamc@76 510 Sgn.RelC x => RelC x
adamc@76 511 | Sgn.NamedC x => NamedC x
adamc@76 512 | Sgn.Sgn x => Sgn x
adamc@76 513 | Sgn.Str x => Str x
adamc@76 514 in
adamc@76 515 bind (ctx, b')
adamc@76 516 end
adamc@76 517 val mfsg = Sgn.mapfoldB {kind = fk, con = fc, sgn_item = fsgi, sgn = fsg, bind = bind'}
adamc@76 518
adamc@76 519 fun mfst ctx str acc =
adamc@76 520 S.bindP (mfst' ctx str acc, fst ctx)
adamc@76 521
adamc@76 522 and mfst' ctx (strAll as (str, loc)) =
adamc@76 523 case str of
adamc@76 524 StrConst ds =>
adamc@76 525 S.map2 (ListUtil.mapfoldB (fn (ctx, d) =>
adamc@76 526 (case #1 d of
adamc@76 527 DCon (x, _, k, _) =>
adamc@76 528 bind (ctx, NamedC (x, k))
adamc@156 529 | DDatatype (x, n, xncs) =>
adamc@156 530 let
adamc@156 531 val ctx = bind (ctx, NamedC (x, (KType, loc)))
adamc@156 532 in
adamc@156 533 foldl (fn ((x, _, co), ctx) =>
adamc@156 534 let
adamc@156 535 val t =
adamc@156 536 case co of
adamc@156 537 NONE => CNamed n
adamc@156 538 | SOME t => TFun (t, (CNamed n, loc))
adamc@156 539 in
adamc@156 540 bind (ctx, NamedE (x, (t, loc)))
adamc@156 541 end)
adamc@156 542 ctx xncs
adamc@156 543 end
adamc@156 544 | DDatatypeImp (x, n, m, ms, x') =>
adamc@156 545 bind (ctx, NamedC (x, (KType, loc)))
adamc@76 546 | DVal (x, _, c, _) =>
adamc@76 547 bind (ctx, NamedE (x, c))
adamc@123 548 | DValRec vis =>
adamc@123 549 foldl (fn ((x, _, c, _), ctx) => bind (ctx, NamedE (x, c))) ctx vis
adamc@76 550 | DSgn (x, _, sgn) =>
adamc@76 551 bind (ctx, Sgn (x, sgn))
adamc@76 552 | DStr (x, _, sgn, _) =>
adamc@76 553 bind (ctx, Str (x, sgn))
adamc@76 554 | DFfiStr (x, _, sgn) =>
adamc@88 555 bind (ctx, Str (x, sgn))
adamc@100 556 | DConstraint _ => ctx
adamc@109 557 | DExport _ => ctx,
adamc@76 558 mfd ctx d)) ctx ds,
adamc@76 559 fn ds' => (StrConst ds', loc))
adamc@76 560 | StrVar _ => S.return2 strAll
adamc@76 561 | StrProj (str, x) =>
adamc@76 562 S.map2 (mfst ctx str,
adamc@76 563 fn str' =>
adamc@76 564 (StrProj (str', x), loc))
adamc@76 565 | StrFun (x, n, sgn1, sgn2, str) =>
adamc@76 566 S.bind2 (mfsg ctx sgn1,
adamc@76 567 fn sgn1' =>
adamc@76 568 S.bind2 (mfsg ctx sgn2,
adamc@76 569 fn sgn2' =>
adamc@76 570 S.map2 (mfst ctx str,
adamc@76 571 fn str' =>
adamc@76 572 (StrFun (x, n, sgn1', sgn2', str'), loc))))
adamc@76 573 | StrApp (str1, str2) =>
adamc@76 574 S.bind2 (mfst ctx str1,
adamc@76 575 fn str1' =>
adamc@76 576 S.map2 (mfst ctx str2,
adamc@76 577 fn str2' =>
adamc@76 578 (StrApp (str1', str2'), loc)))
adamc@76 579 | StrError => S.return2 strAll
adamc@76 580
adamc@76 581 and mfd ctx d acc =
adamc@76 582 S.bindP (mfd' ctx d acc, fd ctx)
adamc@76 583
adamc@76 584 and mfd' ctx (dAll as (d, loc)) =
adamc@76 585 case d of
adamc@76 586 DCon (x, n, k, c) =>
adamc@76 587 S.bind2 (mfk k,
adamc@76 588 fn k' =>
adamc@76 589 S.map2 (mfc ctx c,
adamc@76 590 fn c' =>
adamc@76 591 (DCon (x, n, k', c'), loc)))
adamc@156 592 | DDatatype (x, n, xncs) =>
adamc@156 593 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@156 594 case c of
adamc@156 595 NONE => S.return2 (x, n, c)
adamc@156 596 | SOME c =>
adamc@156 597 S.map2 (mfc ctx c,
adamc@156 598 fn c' => (x, n, SOME c'))) xncs,
adamc@156 599 fn xncs' =>
adamc@156 600 (DDatatype (x, n, xncs'), loc))
adamc@156 601 | DDatatypeImp _ => S.return2 dAll
adamc@123 602 | DVal vi =>
adamc@123 603 S.map2 (mfvi ctx vi,
adamc@123 604 fn vi' =>
adamc@123 605 (DVal vi', loc))
adamc@123 606 | DValRec vis =>
adamc@123 607 S.map2 (ListUtil.mapfold (mfvi ctx) vis,
adamc@123 608 fn vis' =>
adamc@123 609 (DValRec vis', loc))
adamc@76 610 | DSgn (x, n, sgn) =>
adamc@76 611 S.map2 (mfsg ctx sgn,
adamc@76 612 fn sgn' =>
adamc@76 613 (DSgn (x, n, sgn'), loc))
adamc@76 614 | DStr (x, n, sgn, str) =>
adamc@76 615 S.bind2 (mfsg ctx sgn,
adamc@76 616 fn sgn' =>
adamc@76 617 S.map2 (mfst ctx str,
adamc@76 618 fn str' =>
adamc@76 619 (DStr (x, n, sgn', str'), loc)))
adamc@76 620 | DFfiStr (x, n, sgn) =>
adamc@76 621 S.map2 (mfsg ctx sgn,
adamc@76 622 fn sgn' =>
adamc@76 623 (DFfiStr (x, n, sgn'), loc))
adamc@88 624 | DConstraint (c1, c2) =>
adamc@88 625 S.bind2 (mfc ctx c1,
adamc@88 626 fn c1' =>
adamc@88 627 S.map2 (mfc ctx c2,
adamc@88 628 fn c2' =>
adamc@88 629 (DConstraint (c1', c2'), loc)))
adamc@109 630 | DExport (en, sgn, str) =>
adamc@109 631 S.bind2 (mfsg ctx sgn,
adamc@109 632 fn sgn' =>
adamc@109 633 S.map2 (mfst ctx str,
adamc@109 634 fn str' =>
adamc@109 635 (DExport (en, sgn', str'), loc)))
adamc@123 636
adamc@123 637 and mfvi ctx (x, n, c, e) =
adamc@123 638 S.bind2 (mfc ctx c,
adamc@123 639 fn c' =>
adamc@123 640 S.map2 (mfe ctx e,
adamc@123 641 fn e' =>
adamc@123 642 (x, n, c', e')))
adamc@76 643 in
adamc@76 644 mfd
adamc@76 645 end
adamc@76 646
adamc@76 647 fun mapfold {kind, con, exp, sgn_item, sgn, str, decl} =
adamc@76 648 mapfoldB {kind = kind,
adamc@76 649 con = fn () => con,
adamc@76 650 exp = fn () => exp,
adamc@76 651 sgn_item = fn () => sgn_item,
adamc@76 652 sgn = fn () => sgn,
adamc@76 653 str = fn () => str,
adamc@76 654 decl = fn () => decl,
adamc@76 655 bind = fn ((), _) => ()} ()
adamc@76 656
adamc@76 657 fun exists {kind, con, exp, sgn_item, sgn, str, decl} k =
adamc@76 658 case mapfold {kind = fn k => fn () =>
adamc@76 659 if kind k then
adamc@76 660 S.Return ()
adamc@76 661 else
adamc@76 662 S.Continue (k, ()),
adamc@76 663 con = fn c => fn () =>
adamc@76 664 if con c then
adamc@76 665 S.Return ()
adamc@76 666 else
adamc@76 667 S.Continue (c, ()),
adamc@76 668 exp = fn e => fn () =>
adamc@76 669 if exp e then
adamc@76 670 S.Return ()
adamc@76 671 else
adamc@76 672 S.Continue (e, ()),
adamc@76 673 sgn_item = fn sgi => fn () =>
adamc@76 674 if sgn_item sgi then
adamc@76 675 S.Return ()
adamc@76 676 else
adamc@76 677 S.Continue (sgi, ()),
adamc@76 678 sgn = fn x => fn () =>
adamc@76 679 if sgn x then
adamc@76 680 S.Return ()
adamc@76 681 else
adamc@76 682 S.Continue (x, ()),
adamc@76 683 str = fn x => fn () =>
adamc@76 684 if str x then
adamc@76 685 S.Return ()
adamc@76 686 else
adamc@76 687 S.Continue (x, ()),
adamc@76 688 decl = fn x => fn () =>
adamc@76 689 if decl x then
adamc@76 690 S.Return ()
adamc@76 691 else
adamc@76 692 S.Continue (x, ())} k () of
adamc@76 693 S.Return _ => true
adamc@76 694 | S.Continue _ => false
adamc@76 695
adamc@76 696 fun search {kind, con, exp, sgn_item, sgn, str, decl} k =
adamc@76 697 case mapfold {kind = fn x => fn () =>
adamc@76 698 case kind x of
adamc@76 699 NONE => S.Continue (x, ())
adamc@76 700 | SOME v => S.Return v,
adamc@76 701
adamc@76 702 con = fn x => fn () =>
adamc@76 703 case con x of
adamc@76 704 NONE => S.Continue (x, ())
adamc@76 705 | SOME v => S.Return v,
adamc@76 706
adamc@76 707 exp = fn x => fn () =>
adamc@76 708 case exp x of
adamc@76 709 NONE => S.Continue (x, ())
adamc@76 710 | SOME v => S.Return v,
adamc@76 711
adamc@76 712 sgn_item = fn x => fn () =>
adamc@76 713 case sgn_item x of
adamc@76 714 NONE => S.Continue (x, ())
adamc@76 715 | SOME v => S.Return v,
adamc@76 716
adamc@76 717 sgn = fn x => fn () =>
adamc@76 718 case sgn x of
adamc@76 719 NONE => S.Continue (x, ())
adamc@76 720 | SOME v => S.Return v,
adamc@76 721
adamc@76 722 str = fn x => fn () =>
adamc@76 723 case str x of
adamc@76 724 NONE => S.Continue (x, ())
adamc@76 725 | SOME v => S.Return v,
adamc@76 726
adamc@76 727 decl = fn x => fn () =>
adamc@76 728 case decl x of
adamc@76 729 NONE => S.Continue (x, ())
adamc@76 730 | SOME v => S.Return v
adamc@76 731
adamc@76 732 } k () of
adamc@76 733 S.Return x => SOME x
adamc@76 734 | S.Continue _ => NONE
adamc@76 735
adamc@34 736 end
adamc@76 737
adamc@76 738 end