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annotate src/elab_util.sml @ 205:cb8f69556975

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Elaborating 'SELECT *' queries
author Adam Chlipala <adamc@hcoop.net>
date Thu, 14 Aug 2008 15:24:59 -0400
parents dd82457fda82
children cc68da3801bc
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@2 71 | KError => S.return2 kAll
adamc@2 72
adamc@76 73 | KUnif (_, _, ref (SOME k)) => mfk' k
adamc@2 74 | KUnif _ => S.return2 kAll
adamc@2 75 in
adamc@2 76 mfk
adamc@2 77 end
adamc@2 78
adamc@2 79 fun exists f k =
adamc@6 80 case mapfold (fn k => fn () =>
adamc@6 81 if f k then
adamc@6 82 S.Return ()
adamc@6 83 else
adamc@6 84 S.Continue (k, ())) k () of
adamc@6 85 S.Return _ => true
adamc@6 86 | S.Continue _ => false
adamc@6 87
adamc@6 88 end
adamc@6 89
adamc@6 90 structure Con = struct
adamc@6 91
adamc@11 92 datatype binder =
adamc@11 93 Rel of string * Elab.kind
adamc@11 94 | Named of string * Elab.kind
adamc@11 95
adamc@11 96 fun mapfoldB {kind = fk, con = fc, bind} =
adamc@6 97 let
adamc@6 98 val mfk = Kind.mapfold fk
adamc@6 99
adamc@11 100 fun mfc ctx c acc =
adamc@11 101 S.bindP (mfc' ctx c acc, fc ctx)
adamc@6 102
adamc@11 103 and mfc' ctx (cAll as (c, loc)) =
adamc@6 104 case c of
adamc@6 105 TFun (c1, c2) =>
adamc@11 106 S.bind2 (mfc ctx c1,
adamc@6 107 fn c1' =>
adamc@11 108 S.map2 (mfc ctx c2,
adamc@6 109 fn c2' =>
adamc@6 110 (TFun (c1', c2'), loc)))
adamc@6 111 | TCFun (e, x, k, c) =>
adamc@6 112 S.bind2 (mfk k,
adamc@6 113 fn k' =>
adamc@11 114 S.map2 (mfc (bind (ctx, Rel (x, k))) c,
adamc@6 115 fn c' =>
adamc@6 116 (TCFun (e, x, k', c'), loc)))
adamc@85 117 | TDisjoint (c1, c2, c3) =>
adamc@85 118 S.bind2 (mfc ctx c1,
adamc@85 119 fn c1' =>
adamc@85 120 S.bind2 (mfc ctx c2,
adamc@85 121 fn c2' =>
adamc@85 122 S.map2 (mfc ctx c3,
adamc@85 123 fn c3' =>
adamc@85 124 (TDisjoint (c1', c2', c3'), loc))))
adamc@6 125 | TRecord c =>
adamc@11 126 S.map2 (mfc ctx c,
adamc@6 127 fn c' =>
adamc@6 128 (TRecord c', loc))
adamc@6 129
adamc@6 130 | CRel _ => S.return2 cAll
adamc@6 131 | CNamed _ => S.return2 cAll
adamc@34 132 | CModProj _ => S.return2 cAll
adamc@6 133 | CApp (c1, c2) =>
adamc@11 134 S.bind2 (mfc ctx c1,
adamc@6 135 fn c1' =>
adamc@11 136 S.map2 (mfc ctx c2,
adamc@6 137 fn c2' =>
adamc@6 138 (CApp (c1', c2'), loc)))
adamc@8 139 | CAbs (x, k, c) =>
adamc@6 140 S.bind2 (mfk k,
adamc@6 141 fn k' =>
adamc@11 142 S.map2 (mfc (bind (ctx, Rel (x, k))) c,
adamc@6 143 fn c' =>
adamc@8 144 (CAbs (x, k', c'), loc)))
adamc@84 145 | CDisjoint (c1, c2, c3) =>
adamc@84 146 S.bind2 (mfc ctx c1,
adamc@84 147 fn c1' =>
adamc@84 148 S.bind2 (mfc ctx c2,
adamc@84 149 fn c2' =>
adamc@84 150 S.map2 (mfc ctx c3,
adamc@84 151 fn c3' =>
adamc@84 152 (CDisjoint (c1', c2', c3'), loc))))
adamc@6 153
adamc@6 154 | CName _ => S.return2 cAll
adamc@6 155
adamc@6 156 | CRecord (k, xcs) =>
adamc@6 157 S.bind2 (mfk k,
adamc@6 158 fn k' =>
adamc@6 159 S.map2 (ListUtil.mapfold (fn (x, c) =>
adamc@11 160 S.bind2 (mfc ctx x,
adamc@6 161 fn x' =>
adamc@11 162 S.map2 (mfc ctx c,
adamc@6 163 fn c' =>
adamc@6 164 (x', c'))))
adamc@6 165 xcs,
adamc@6 166 fn xcs' =>
adamc@6 167 (CRecord (k', xcs'), loc)))
adamc@6 168 | CConcat (c1, c2) =>
adamc@11 169 S.bind2 (mfc ctx c1,
adamc@6 170 fn c1' =>
adamc@11 171 S.map2 (mfc ctx c2,
adamc@6 172 fn c2' =>
adamc@6 173 (CConcat (c1', c2'), loc)))
adamc@67 174 | CFold (k1, k2) =>
adamc@67 175 S.bind2 (mfk k1,
adamc@67 176 fn k1' =>
adamc@67 177 S.map2 (mfk k2,
adamc@67 178 fn k2' =>
adamc@67 179 (CFold (k1', k2'), loc)))
adamc@6 180
adamc@82 181 | CUnit => S.return2 cAll
adamc@82 182
adamc@6 183 | CError => S.return2 cAll
adamc@76 184 | CUnif (_, _, _, ref (SOME c)) => mfc' ctx c
adamc@6 185 | CUnif _ => S.return2 cAll
adamc@6 186 in
adamc@6 187 mfc
adamc@6 188 end
adamc@6 189
adamc@11 190 fun mapfold {kind = fk, con = fc} =
adamc@11 191 mapfoldB {kind = fk,
adamc@11 192 con = fn () => fc,
adamc@11 193 bind = fn ((), _) => ()} ()
adamc@11 194
adamc@11 195 fun mapB {kind, con, bind} ctx c =
adamc@11 196 case mapfoldB {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@11 197 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@11 198 bind = bind} ctx c () of
adamc@11 199 S.Continue (c, ()) => c
adamc@34 200 | S.Return _ => raise Fail "ElabUtil.Con.mapB: Impossible"
adamc@34 201
adamc@34 202 fun map {kind, con} s =
adamc@34 203 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@34 204 con = fn c => fn () => S.Continue (con c, ())} s () of
adamc@34 205 S.Return () => raise Fail "ElabUtil.Con.map: Impossible"
adamc@34 206 | S.Continue (s, ()) => s
adamc@11 207
adamc@6 208 fun exists {kind, con} k =
adamc@6 209 case mapfold {kind = fn k => fn () =>
adamc@6 210 if kind k then
adamc@6 211 S.Return ()
adamc@6 212 else
adamc@6 213 S.Continue (k, ()),
adamc@6 214 con = fn c => fn () =>
adamc@6 215 if con c then
adamc@6 216 S.Return ()
adamc@6 217 else
adamc@6 218 S.Continue (c, ())} k () of
adamc@2 219 S.Return _ => true
adamc@2 220 | S.Continue _ => false
adamc@2 221
adamc@2 222 end
adamc@2 223
adamc@10 224 structure Exp = struct
adamc@10 225
adamc@11 226 datatype binder =
adamc@11 227 RelC of string * Elab.kind
adamc@11 228 | NamedC of string * Elab.kind
adamc@11 229 | RelE of string * Elab.con
adamc@11 230 | NamedE of string * Elab.con
adamc@11 231
adamc@11 232 fun mapfoldB {kind = fk, con = fc, exp = fe, bind} =
adamc@10 233 let
adamc@10 234 val mfk = Kind.mapfold fk
adamc@10 235
adamc@11 236 fun bind' (ctx, b) =
adamc@11 237 let
adamc@11 238 val b' = case b of
adamc@11 239 Con.Rel x => RelC x
adamc@11 240 | Con.Named x => NamedC x
adamc@11 241 in
adamc@11 242 bind (ctx, b')
adamc@11 243 end
adamc@11 244 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@10 245
adamc@11 246 fun mfe ctx e acc =
adamc@11 247 S.bindP (mfe' ctx e acc, fe ctx)
adamc@11 248
adamc@11 249 and mfe' ctx (eAll as (e, loc)) =
adamc@10 250 case e of
adamc@14 251 EPrim _ => S.return2 eAll
adamc@14 252 | ERel _ => S.return2 eAll
adamc@10 253 | ENamed _ => S.return2 eAll
adamc@34 254 | EModProj _ => S.return2 eAll
adamc@10 255 | EApp (e1, e2) =>
adamc@11 256 S.bind2 (mfe ctx e1,
adamc@10 257 fn e1' =>
adamc@11 258 S.map2 (mfe ctx e2,
adamc@10 259 fn e2' =>
adamc@10 260 (EApp (e1', e2'), loc)))
adamc@26 261 | EAbs (x, dom, ran, e) =>
adamc@26 262 S.bind2 (mfc ctx dom,
adamc@26 263 fn dom' =>
adamc@26 264 S.bind2 (mfc ctx ran,
adamc@26 265 fn ran' =>
adamc@26 266 S.map2 (mfe (bind (ctx, RelE (x, dom'))) e,
adamc@26 267 fn e' =>
adamc@26 268 (EAbs (x, dom', ran', e'), loc))))
adamc@26 269
adamc@10 270 | ECApp (e, c) =>
adamc@11 271 S.bind2 (mfe ctx e,
adamc@10 272 fn e' =>
adamc@11 273 S.map2 (mfc ctx c,
adamc@10 274 fn c' =>
adamc@10 275 (ECApp (e', c'), loc)))
adamc@10 276 | ECAbs (expl, x, k, e) =>
adamc@10 277 S.bind2 (mfk k,
adamc@10 278 fn k' =>
adamc@11 279 S.map2 (mfe (bind (ctx, RelC (x, k))) e,
adamc@10 280 fn e' =>
adamc@10 281 (ECAbs (expl, x, k', e'), loc)))
adamc@10 282
adamc@12 283 | ERecord xes =>
adamc@29 284 S.map2 (ListUtil.mapfold (fn (x, e, t) =>
adamc@12 285 S.bind2 (mfc ctx x,
adamc@12 286 fn x' =>
adamc@29 287 S.bind2 (mfe ctx e,
adamc@12 288 fn e' =>
adamc@29 289 S.map2 (mfc ctx t,
adamc@29 290 fn t' =>
adamc@29 291 (x', e', t')))))
adamc@12 292 xes,
adamc@12 293 fn xes' =>
adamc@12 294 (ERecord xes', loc))
adamc@12 295 | EField (e, c, {field, rest}) =>
adamc@12 296 S.bind2 (mfe ctx e,
adamc@12 297 fn e' =>
adamc@12 298 S.bind2 (mfc ctx c,
adamc@12 299 fn c' =>
adamc@12 300 S.bind2 (mfc ctx field,
adamc@12 301 fn field' =>
adamc@12 302 S.map2 (mfc ctx rest,
adamc@12 303 fn rest' =>
adamc@12 304 (EField (e', c', {field = field', rest = rest'}), loc)))))
adamc@149 305 | ECut (e, c, {field, rest}) =>
adamc@149 306 S.bind2 (mfe ctx e,
adamc@149 307 fn e' =>
adamc@149 308 S.bind2 (mfc ctx c,
adamc@149 309 fn c' =>
adamc@149 310 S.bind2 (mfc ctx field,
adamc@149 311 fn field' =>
adamc@149 312 S.map2 (mfc ctx rest,
adamc@149 313 fn rest' =>
adamc@149 314 (ECut (e', c', {field = field', rest = rest'}), loc)))))
adamc@12 315
adamc@71 316 | EFold k =>
adamc@71 317 S.map2 (mfk k,
adamc@71 318 fn k' =>
adamc@71 319 (EFold k', loc))
adamc@71 320
adamc@182 321 | ECase (e, pes, {disc, result}) =>
adamc@171 322 S.bind2 (mfe ctx e,
adamc@171 323 fn e' =>
adamc@171 324 S.bind2 (ListUtil.mapfold (fn (p, e) =>
adamc@171 325 S.map2 (mfe ctx e,
adamc@171 326 fn e' => (p, e'))) pes,
adamc@171 327 fn pes' =>
adamc@182 328 S.bind2 (mfc ctx disc,
adamc@182 329 fn disc' =>
adamc@182 330 S.map2 (mfc ctx result,
adamc@182 331 fn result' =>
adamc@182 332 (ECase (e', pes', {disc = disc', result = result'}), loc)))))
adamc@171 333
adamc@10 334 | EError => S.return2 eAll
adamc@10 335 in
adamc@10 336 mfe
adamc@10 337 end
adamc@10 338
adamc@11 339 fun mapfold {kind = fk, con = fc, exp = fe} =
adamc@11 340 mapfoldB {kind = fk,
adamc@11 341 con = fn () => fc,
adamc@11 342 exp = fn () => fe,
adamc@11 343 bind = fn ((), _) => ()} ()
adamc@11 344
adamc@10 345 fun exists {kind, con, exp} k =
adamc@10 346 case mapfold {kind = fn k => fn () =>
adamc@10 347 if kind k then
adamc@10 348 S.Return ()
adamc@10 349 else
adamc@10 350 S.Continue (k, ()),
adamc@10 351 con = fn c => fn () =>
adamc@10 352 if con c then
adamc@10 353 S.Return ()
adamc@10 354 else
adamc@10 355 S.Continue (c, ()),
adamc@10 356 exp = fn e => fn () =>
adamc@10 357 if exp e then
adamc@10 358 S.Return ()
adamc@10 359 else
adamc@10 360 S.Continue (e, ())} k () of
adamc@10 361 S.Return _ => true
adamc@10 362 | S.Continue _ => false
adamc@10 363
adamc@10 364 end
adamc@10 365
adamc@34 366 structure Sgn = struct
adamc@34 367
adamc@34 368 datatype binder =
adamc@34 369 RelC of string * Elab.kind
adamc@34 370 | NamedC of string * Elab.kind
adamc@34 371 | Str of string * Elab.sgn
adamc@59 372 | Sgn of string * Elab.sgn
adamc@34 373
adamc@34 374 fun mapfoldB {kind, con, sgn_item, sgn, bind} =
adamc@34 375 let
adamc@34 376 fun bind' (ctx, b) =
adamc@34 377 let
adamc@34 378 val b' = case b of
adamc@34 379 Con.Rel x => RelC x
adamc@34 380 | Con.Named x => NamedC x
adamc@34 381 in
adamc@34 382 bind (ctx, b')
adamc@34 383 end
adamc@34 384 val con = Con.mapfoldB {kind = kind, con = con, bind = bind'}
adamc@34 385
adamc@34 386 val kind = Kind.mapfold kind
adamc@34 387
adamc@34 388 fun sgi ctx si acc =
adamc@34 389 S.bindP (sgi' ctx si acc, sgn_item ctx)
adamc@34 390
adamc@156 391 and sgi' ctx (siAll as (si, loc)) =
adamc@34 392 case si of
adamc@34 393 SgiConAbs (x, n, k) =>
adamc@34 394 S.map2 (kind k,
adamc@34 395 fn k' =>
adamc@34 396 (SgiConAbs (x, n, k'), loc))
adamc@34 397 | SgiCon (x, n, k, c) =>
adamc@34 398 S.bind2 (kind k,
adamc@34 399 fn k' =>
adamc@34 400 S.map2 (con ctx c,
adamc@34 401 fn c' =>
adamc@34 402 (SgiCon (x, n, k', c'), loc)))
adamc@191 403 | SgiDatatype (x, n, xs, xncs) =>
adamc@156 404 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@156 405 case c of
adamc@156 406 NONE => S.return2 (x, n, c)
adamc@156 407 | SOME c =>
adamc@156 408 S.map2 (con ctx c,
adamc@156 409 fn c' => (x, n, SOME c'))) xncs,
adamc@156 410 fn xncs' =>
adamc@191 411 (SgiDatatype (x, n, xs, xncs'), loc))
adamc@191 412 | SgiDatatypeImp (x, n, m1, ms, s, xs, xncs) =>
adamc@162 413 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@162 414 case c of
adamc@162 415 NONE => S.return2 (x, n, c)
adamc@162 416 | SOME c =>
adamc@162 417 S.map2 (con ctx c,
adamc@162 418 fn c' => (x, n, SOME c'))) xncs,
adamc@162 419 fn xncs' =>
adamc@191 420 (SgiDatatypeImp (x, n, m1, ms, s, xs, xncs'), loc))
adamc@34 421 | SgiVal (x, n, c) =>
adamc@34 422 S.map2 (con ctx c,
adamc@34 423 fn c' =>
adamc@34 424 (SgiVal (x, n, c'), loc))
adamc@34 425 | SgiStr (x, n, s) =>
adamc@34 426 S.map2 (sg ctx s,
adamc@34 427 fn s' =>
adamc@34 428 (SgiStr (x, n, s'), loc))
adamc@59 429 | SgiSgn (x, n, s) =>
adamc@59 430 S.map2 (sg ctx s,
adamc@59 431 fn s' =>
adamc@59 432 (SgiSgn (x, n, s'), loc))
adamc@88 433 | SgiConstraint (c1, c2) =>
adamc@88 434 S.bind2 (con ctx c1,
adamc@88 435 fn c1' =>
adamc@88 436 S.map2 (con ctx c2,
adamc@88 437 fn c2' =>
adamc@88 438 (SgiConstraint (c1', c2'), loc)))
adamc@205 439 | SgiTable (tn, x, n, c) =>
adamc@203 440 S.map2 (con ctx c,
adamc@203 441 fn c' =>
adamc@205 442 (SgiTable (tn, x, n, c'), loc))
adamc@34 443
adamc@34 444 and sg ctx s acc =
adamc@34 445 S.bindP (sg' ctx s acc, sgn ctx)
adamc@34 446
adamc@34 447 and sg' ctx (sAll as (s, loc)) =
adamc@34 448 case s of
adamc@34 449 SgnConst sgis =>
adamc@34 450 S.map2 (ListUtil.mapfoldB (fn (ctx, si) =>
adamc@34 451 (case #1 si of
adamc@34 452 SgiConAbs (x, _, k) =>
adamc@34 453 bind (ctx, NamedC (x, k))
adamc@34 454 | SgiCon (x, _, k, _) =>
adamc@34 455 bind (ctx, NamedC (x, k))
adamc@191 456 | SgiDatatype (x, n, _, xncs) =>
adamc@156 457 bind (ctx, NamedC (x, (KType, loc)))
adamc@191 458 | SgiDatatypeImp (x, _, _, _, _, _, _) =>
adamc@156 459 bind (ctx, NamedC (x, (KType, loc)))
adamc@34 460 | SgiVal _ => ctx
adamc@34 461 | SgiStr (x, _, sgn) =>
adamc@59 462 bind (ctx, Str (x, sgn))
adamc@59 463 | SgiSgn (x, _, sgn) =>
adamc@88 464 bind (ctx, Sgn (x, sgn))
adamc@203 465 | SgiConstraint _ => ctx
adamc@203 466 | SgiTable _ => ctx,
adamc@34 467 sgi ctx si)) ctx sgis,
adamc@34 468 fn sgis' =>
adamc@34 469 (SgnConst sgis', loc))
adamc@34 470
adamc@34 471 | SgnVar _ => S.return2 sAll
adamc@41 472 | SgnFun (m, n, s1, s2) =>
adamc@41 473 S.bind2 (sg ctx s1,
adamc@41 474 fn s1' =>
adamc@41 475 S.map2 (sg (bind (ctx, Str (m, s1'))) s2,
adamc@41 476 fn s2' =>
adamc@41 477 (SgnFun (m, n, s1', s2'), loc)))
adamc@59 478 | SgnProj _ => S.return2 sAll
adamc@42 479 | SgnWhere (sgn, x, c) =>
adamc@42 480 S.bind2 (sg ctx sgn,
adamc@42 481 fn sgn' =>
adamc@42 482 S.map2 (con ctx c,
adamc@42 483 fn c' =>
adamc@42 484 (SgnWhere (sgn', x, c'), loc)))
adamc@34 485 | SgnError => S.return2 sAll
adamc@34 486 in
adamc@34 487 sg
adamc@34 488 end
adamc@34 489
adamc@34 490 fun mapfold {kind, con, sgn_item, sgn} =
adamc@34 491 mapfoldB {kind = kind,
adamc@34 492 con = fn () => con,
adamc@34 493 sgn_item = fn () => sgn_item,
adamc@34 494 sgn = fn () => sgn,
adamc@34 495 bind = fn ((), _) => ()} ()
adamc@34 496
adamc@34 497 fun map {kind, con, sgn_item, sgn} s =
adamc@34 498 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@34 499 con = fn c => fn () => S.Continue (con c, ()),
adamc@34 500 sgn_item = fn si => fn () => S.Continue (sgn_item si, ()),
adamc@34 501 sgn = fn s => fn () => S.Continue (sgn s, ())} s () of
adamc@34 502 S.Return () => raise Fail "Elab_util.Sgn.map"
adamc@34 503 | S.Continue (s, ()) => s
adamc@34 504
adamc@2 505 end
adamc@34 506
adamc@76 507 structure Decl = struct
adamc@76 508
adamc@76 509 datatype binder =
adamc@76 510 RelC of string * Elab.kind
adamc@76 511 | NamedC of string * Elab.kind
adamc@76 512 | RelE of string * Elab.con
adamc@76 513 | NamedE of string * Elab.con
adamc@76 514 | Str of string * Elab.sgn
adamc@76 515 | Sgn of string * Elab.sgn
adamc@76 516
adamc@76 517 fun mapfoldB {kind = fk, con = fc, exp = fe, sgn_item = fsgi, sgn = fsg, str = fst, decl = fd, bind} =
adamc@76 518 let
adamc@76 519 val mfk = Kind.mapfold fk
adamc@76 520
adamc@76 521 fun bind' (ctx, b) =
adamc@76 522 let
adamc@76 523 val b' = case b of
adamc@76 524 Con.Rel x => RelC x
adamc@76 525 | Con.Named x => NamedC x
adamc@76 526 in
adamc@76 527 bind (ctx, b')
adamc@76 528 end
adamc@76 529 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@76 530
adamc@76 531 fun bind' (ctx, b) =
adamc@76 532 let
adamc@76 533 val b' = case b of
adamc@76 534 Exp.RelC x => RelC x
adamc@76 535 | Exp.NamedC x => NamedC x
adamc@76 536 | Exp.RelE x => RelE x
adamc@76 537 | Exp.NamedE x => NamedE x
adamc@76 538 in
adamc@76 539 bind (ctx, b')
adamc@76 540 end
adamc@76 541 val mfe = Exp.mapfoldB {kind = fk, con = fc, exp = fe, bind = bind'}
adamc@76 542
adamc@76 543 fun bind' (ctx, b) =
adamc@76 544 let
adamc@76 545 val b' = case b of
adamc@76 546 Sgn.RelC x => RelC x
adamc@76 547 | Sgn.NamedC x => NamedC x
adamc@76 548 | Sgn.Sgn x => Sgn x
adamc@76 549 | Sgn.Str x => Str x
adamc@76 550 in
adamc@76 551 bind (ctx, b')
adamc@76 552 end
adamc@76 553 val mfsg = Sgn.mapfoldB {kind = fk, con = fc, sgn_item = fsgi, sgn = fsg, bind = bind'}
adamc@76 554
adamc@76 555 fun mfst ctx str acc =
adamc@76 556 S.bindP (mfst' ctx str acc, fst ctx)
adamc@76 557
adamc@76 558 and mfst' ctx (strAll as (str, loc)) =
adamc@76 559 case str of
adamc@76 560 StrConst ds =>
adamc@76 561 S.map2 (ListUtil.mapfoldB (fn (ctx, d) =>
adamc@76 562 (case #1 d of
adamc@76 563 DCon (x, _, k, _) =>
adamc@76 564 bind (ctx, NamedC (x, k))
adamc@191 565 | DDatatype (x, n, xs, xncs) =>
adamc@156 566 let
adamc@156 567 val ctx = bind (ctx, NamedC (x, (KType, loc)))
adamc@156 568 in
adamc@156 569 foldl (fn ((x, _, co), ctx) =>
adamc@156 570 let
adamc@156 571 val t =
adamc@156 572 case co of
adamc@156 573 NONE => CNamed n
adamc@156 574 | SOME t => TFun (t, (CNamed n, loc))
adamc@191 575
adamc@191 576 val k = (KType, loc)
adamc@191 577 val t = (t, loc)
adamc@191 578 val t = foldr (fn (x, t) =>
adamc@191 579 (TCFun (Explicit,
adamc@191 580 x,
adamc@191 581 k,
adamc@191 582 t), loc))
adamc@191 583 t xs
adamc@156 584 in
adamc@191 585 bind (ctx, NamedE (x, t))
adamc@156 586 end)
adamc@156 587 ctx xncs
adamc@156 588 end
adamc@191 589 | DDatatypeImp (x, n, m, ms, x', _, _) =>
adamc@156 590 bind (ctx, NamedC (x, (KType, loc)))
adamc@76 591 | DVal (x, _, c, _) =>
adamc@76 592 bind (ctx, NamedE (x, c))
adamc@123 593 | DValRec vis =>
adamc@123 594 foldl (fn ((x, _, c, _), ctx) => bind (ctx, NamedE (x, c))) ctx vis
adamc@76 595 | DSgn (x, _, sgn) =>
adamc@76 596 bind (ctx, Sgn (x, sgn))
adamc@76 597 | DStr (x, _, sgn, _) =>
adamc@76 598 bind (ctx, Str (x, sgn))
adamc@76 599 | DFfiStr (x, _, sgn) =>
adamc@88 600 bind (ctx, Str (x, sgn))
adamc@100 601 | DConstraint _ => ctx
adamc@203 602 | DExport _ => ctx
adamc@205 603 | DTable (tn, x, n, c) =>
adamc@205 604 bind (ctx, NamedE (x, (CApp ((CModProj (n, [], "table"), loc),
adamc@205 605 c), loc))),
adamc@76 606 mfd ctx d)) ctx ds,
adamc@76 607 fn ds' => (StrConst ds', loc))
adamc@76 608 | StrVar _ => S.return2 strAll
adamc@76 609 | StrProj (str, x) =>
adamc@76 610 S.map2 (mfst ctx str,
adamc@76 611 fn str' =>
adamc@76 612 (StrProj (str', x), loc))
adamc@76 613 | StrFun (x, n, sgn1, sgn2, str) =>
adamc@76 614 S.bind2 (mfsg ctx sgn1,
adamc@76 615 fn sgn1' =>
adamc@76 616 S.bind2 (mfsg ctx sgn2,
adamc@76 617 fn sgn2' =>
adamc@76 618 S.map2 (mfst ctx str,
adamc@76 619 fn str' =>
adamc@76 620 (StrFun (x, n, sgn1', sgn2', str'), loc))))
adamc@76 621 | StrApp (str1, str2) =>
adamc@76 622 S.bind2 (mfst ctx str1,
adamc@76 623 fn str1' =>
adamc@76 624 S.map2 (mfst ctx str2,
adamc@76 625 fn str2' =>
adamc@76 626 (StrApp (str1', str2'), loc)))
adamc@76 627 | StrError => S.return2 strAll
adamc@76 628
adamc@76 629 and mfd ctx d acc =
adamc@76 630 S.bindP (mfd' ctx d acc, fd ctx)
adamc@76 631
adamc@76 632 and mfd' ctx (dAll as (d, loc)) =
adamc@76 633 case d of
adamc@76 634 DCon (x, n, k, c) =>
adamc@76 635 S.bind2 (mfk k,
adamc@76 636 fn k' =>
adamc@76 637 S.map2 (mfc ctx c,
adamc@76 638 fn c' =>
adamc@76 639 (DCon (x, n, k', c'), loc)))
adamc@191 640 | DDatatype (x, n, xs, xncs) =>
adamc@156 641 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@156 642 case c of
adamc@156 643 NONE => S.return2 (x, n, c)
adamc@156 644 | SOME c =>
adamc@156 645 S.map2 (mfc ctx c,
adamc@156 646 fn c' => (x, n, SOME c'))) xncs,
adamc@156 647 fn xncs' =>
adamc@191 648 (DDatatype (x, n, xs, xncs'), loc))
adamc@191 649 | DDatatypeImp (x, n, m1, ms, s, xs, xncs) =>
adamc@162 650 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@162 651 case c of
adamc@162 652 NONE => S.return2 (x, n, c)
adamc@162 653 | SOME c =>
adamc@162 654 S.map2 (mfc ctx c,
adamc@162 655 fn c' => (x, n, SOME c'))) xncs,
adamc@162 656 fn xncs' =>
adamc@191 657 (DDatatypeImp (x, n, m1, ms, s, xs, xncs'), loc))
adamc@123 658 | DVal vi =>
adamc@123 659 S.map2 (mfvi ctx vi,
adamc@123 660 fn vi' =>
adamc@123 661 (DVal vi', loc))
adamc@123 662 | DValRec vis =>
adamc@123 663 S.map2 (ListUtil.mapfold (mfvi ctx) vis,
adamc@123 664 fn vis' =>
adamc@123 665 (DValRec vis', loc))
adamc@76 666 | DSgn (x, n, sgn) =>
adamc@76 667 S.map2 (mfsg ctx sgn,
adamc@76 668 fn sgn' =>
adamc@76 669 (DSgn (x, n, sgn'), loc))
adamc@76 670 | DStr (x, n, sgn, str) =>
adamc@76 671 S.bind2 (mfsg ctx sgn,
adamc@76 672 fn sgn' =>
adamc@76 673 S.map2 (mfst ctx str,
adamc@76 674 fn str' =>
adamc@76 675 (DStr (x, n, sgn', str'), loc)))
adamc@76 676 | DFfiStr (x, n, sgn) =>
adamc@76 677 S.map2 (mfsg ctx sgn,
adamc@76 678 fn sgn' =>
adamc@76 679 (DFfiStr (x, n, sgn'), loc))
adamc@88 680 | DConstraint (c1, c2) =>
adamc@88 681 S.bind2 (mfc ctx c1,
adamc@88 682 fn c1' =>
adamc@88 683 S.map2 (mfc ctx c2,
adamc@88 684 fn c2' =>
adamc@88 685 (DConstraint (c1', c2'), loc)))
adamc@109 686 | DExport (en, sgn, str) =>
adamc@109 687 S.bind2 (mfsg ctx sgn,
adamc@109 688 fn sgn' =>
adamc@109 689 S.map2 (mfst ctx str,
adamc@109 690 fn str' =>
adamc@109 691 (DExport (en, sgn', str'), loc)))
adamc@123 692
adamc@205 693 | DTable (tn, x, n, c) =>
adamc@203 694 S.map2 (mfc ctx c,
adamc@203 695 fn c' =>
adamc@205 696 (DTable (tn, x, n, c'), loc))
adamc@203 697
adamc@123 698 and mfvi ctx (x, n, c, e) =
adamc@123 699 S.bind2 (mfc ctx c,
adamc@123 700 fn c' =>
adamc@123 701 S.map2 (mfe ctx e,
adamc@123 702 fn e' =>
adamc@123 703 (x, n, c', e')))
adamc@76 704 in
adamc@76 705 mfd
adamc@76 706 end
adamc@76 707
adamc@76 708 fun mapfold {kind, con, exp, sgn_item, sgn, str, decl} =
adamc@76 709 mapfoldB {kind = kind,
adamc@76 710 con = fn () => con,
adamc@76 711 exp = fn () => exp,
adamc@76 712 sgn_item = fn () => sgn_item,
adamc@76 713 sgn = fn () => sgn,
adamc@76 714 str = fn () => str,
adamc@76 715 decl = fn () => decl,
adamc@76 716 bind = fn ((), _) => ()} ()
adamc@76 717
adamc@76 718 fun exists {kind, con, exp, sgn_item, sgn, str, decl} k =
adamc@76 719 case mapfold {kind = fn k => fn () =>
adamc@76 720 if kind k then
adamc@76 721 S.Return ()
adamc@76 722 else
adamc@76 723 S.Continue (k, ()),
adamc@76 724 con = fn c => fn () =>
adamc@76 725 if con c then
adamc@76 726 S.Return ()
adamc@76 727 else
adamc@76 728 S.Continue (c, ()),
adamc@76 729 exp = fn e => fn () =>
adamc@76 730 if exp e then
adamc@76 731 S.Return ()
adamc@76 732 else
adamc@76 733 S.Continue (e, ()),
adamc@76 734 sgn_item = fn sgi => fn () =>
adamc@76 735 if sgn_item sgi then
adamc@76 736 S.Return ()
adamc@76 737 else
adamc@76 738 S.Continue (sgi, ()),
adamc@76 739 sgn = fn x => fn () =>
adamc@76 740 if sgn x then
adamc@76 741 S.Return ()
adamc@76 742 else
adamc@76 743 S.Continue (x, ()),
adamc@76 744 str = fn x => fn () =>
adamc@76 745 if str x then
adamc@76 746 S.Return ()
adamc@76 747 else
adamc@76 748 S.Continue (x, ()),
adamc@76 749 decl = fn x => fn () =>
adamc@76 750 if decl x then
adamc@76 751 S.Return ()
adamc@76 752 else
adamc@76 753 S.Continue (x, ())} k () of
adamc@76 754 S.Return _ => true
adamc@76 755 | S.Continue _ => false
adamc@76 756
adamc@76 757 fun search {kind, con, exp, sgn_item, sgn, str, decl} k =
adamc@76 758 case mapfold {kind = fn x => fn () =>
adamc@76 759 case kind x of
adamc@76 760 NONE => S.Continue (x, ())
adamc@76 761 | SOME v => S.Return v,
adamc@76 762
adamc@76 763 con = fn x => fn () =>
adamc@76 764 case con x of
adamc@76 765 NONE => S.Continue (x, ())
adamc@76 766 | SOME v => S.Return v,
adamc@76 767
adamc@76 768 exp = fn x => fn () =>
adamc@76 769 case exp x of
adamc@76 770 NONE => S.Continue (x, ())
adamc@76 771 | SOME v => S.Return v,
adamc@76 772
adamc@76 773 sgn_item = fn x => fn () =>
adamc@76 774 case sgn_item x of
adamc@76 775 NONE => S.Continue (x, ())
adamc@76 776 | SOME v => S.Return v,
adamc@76 777
adamc@76 778 sgn = fn x => fn () =>
adamc@76 779 case sgn x of
adamc@76 780 NONE => S.Continue (x, ())
adamc@76 781 | SOME v => S.Return v,
adamc@76 782
adamc@76 783 str = fn x => fn () =>
adamc@76 784 case str x of
adamc@76 785 NONE => S.Continue (x, ())
adamc@76 786 | SOME v => S.Return v,
adamc@76 787
adamc@76 788 decl = fn x => fn () =>
adamc@76 789 case decl x of
adamc@76 790 NONE => S.Continue (x, ())
adamc@76 791 | SOME v => S.Return v
adamc@76 792
adamc@76 793 } k () of
adamc@76 794 S.Return x => SOME x
adamc@76 795 | S.Continue _ => NONE
adamc@76 796
adamc@34 797 end
adamc@76 798
adamc@76 799 end