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annotate src/elab_util.sml @ 2297:6d56080f495c

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Fix a read-after-free bug using a timestamp check
author Adam Chlipala <adam@chlipala.net>
date Thu, 19 Nov 2015 13:18:58 -0500
parents 22117edf8fd3
children 1091227f535a
rev   line source
adam@1303 1 (* Copyright (c) 2008-2010, 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@623 46 fun mapfoldB {kind, bind} =
adamc@2 47 let
adamc@623 48 fun mfk ctx k acc =
adamc@623 49 S.bindP (mfk' ctx k acc, kind ctx)
adamc@2 50
adamc@623 51 and mfk' ctx (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@623 56 S.bind2 (mfk ctx k1,
adamc@2 57 fn k1' =>
adamc@623 58 S.map2 (mfk ctx 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@623 65 S.map2 (mfk ctx 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@623 72 S.map2 (ListUtil.mapfold (mfk ctx) 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
adam@1639 78 | KUnif (_, _, ref (KKnown k)) => mfk' ctx k
adamc@2 79 | KUnif _ => S.return2 kAll
adamc@623 80
adam@1639 81 | KTupleUnif (_, _, ref (KKnown k)) => mfk' ctx k
adam@1302 82 | KTupleUnif (loc, nks, r) =>
adam@1302 83 S.map2 (ListUtil.mapfold (fn (n, k) =>
adam@1302 84 S.map2 (mfk ctx k,
adam@1302 85 fn k' =>
adam@1302 86 (n, k'))) nks,
adam@1302 87 fn nks' =>
adam@1302 88 (KTupleUnif (loc, nks', r), loc))
adam@1302 89
adam@1302 90
adamc@623 91 | KRel _ => S.return2 kAll
adamc@623 92 | KFun (x, k) =>
adamc@623 93 S.map2 (mfk (bind (ctx, x)) k,
adamc@623 94 fn k' =>
adamc@623 95 (KFun (x, k'), loc))
adamc@2 96 in
adamc@2 97 mfk
adamc@2 98 end
adamc@2 99
adamc@623 100 fun mapfold fk =
adamc@623 101 mapfoldB {kind = fn () => fk,
adamc@623 102 bind = fn ((), _) => ()} ()
adamc@623 103
adamc@623 104 fun mapB {kind, bind} ctx k =
adamc@623 105 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adamc@623 106 bind = bind} ctx k () of
adamc@623 107 S.Continue (k, ()) => k
adamc@623 108 | S.Return _ => raise Fail "ElabUtil.Kind.mapB: Impossible"
adamc@623 109
adamc@2 110 fun exists f k =
adamc@6 111 case mapfold (fn k => fn () =>
adamc@6 112 if f k then
adamc@6 113 S.Return ()
adamc@6 114 else
adamc@6 115 S.Continue (k, ())) k () of
adamc@6 116 S.Return _ => true
adamc@6 117 | S.Continue _ => false
adamc@6 118
adamc@6 119 end
adamc@6 120
adam@1303 121 val mliftConInCon = ref (fn n : int => fn c : con => (raise Fail "You didn't set ElabUtil.mliftConInCon!") : con)
adam@1303 122
adamc@6 123 structure Con = struct
adamc@6 124
adamc@11 125 datatype binder =
adamc@623 126 RelK of string
adamc@623 127 | RelC of string * Elab.kind
adamc@792 128 | NamedC of string * int * Elab.kind * Elab.con option
adamc@11 129
adamc@11 130 fun mapfoldB {kind = fk, con = fc, bind} =
adamc@6 131 let
adamc@623 132 val mfk = Kind.mapfoldB {kind = fk, bind = fn (ctx, s) => bind (ctx, RelK s)}
adamc@6 133
adamc@11 134 fun mfc ctx c acc =
adamc@11 135 S.bindP (mfc' ctx c acc, fc ctx)
adamc@6 136
adamc@11 137 and mfc' ctx (cAll as (c, loc)) =
adamc@6 138 case c of
adamc@6 139 TFun (c1, c2) =>
adamc@11 140 S.bind2 (mfc ctx c1,
adamc@6 141 fn c1' =>
adamc@11 142 S.map2 (mfc ctx c2,
adamc@6 143 fn c2' =>
adamc@6 144 (TFun (c1', c2'), loc)))
adamc@6 145 | TCFun (e, x, k, c) =>
adamc@623 146 S.bind2 (mfk ctx k,
adamc@6 147 fn k' =>
adamc@623 148 S.map2 (mfc (bind (ctx, RelC (x, k))) c,
adamc@6 149 fn c' =>
adamc@6 150 (TCFun (e, x, k', c'), loc)))
adamc@628 151 | TDisjoint (c1, c2, c3) =>
adamc@85 152 S.bind2 (mfc ctx c1,
adamc@85 153 fn c1' =>
adamc@85 154 S.bind2 (mfc ctx c2,
adamc@85 155 fn c2' =>
adamc@85 156 S.map2 (mfc ctx c3,
adamc@85 157 fn c3' =>
adamc@628 158 (TDisjoint (c1', c2', c3'), loc))))
adamc@6 159 | TRecord c =>
adamc@11 160 S.map2 (mfc ctx c,
adamc@6 161 fn c' =>
adamc@6 162 (TRecord c', loc))
adamc@6 163
adamc@6 164 | CRel _ => S.return2 cAll
adamc@6 165 | CNamed _ => S.return2 cAll
adamc@34 166 | CModProj _ => S.return2 cAll
adamc@6 167 | CApp (c1, c2) =>
adamc@11 168 S.bind2 (mfc ctx c1,
adamc@6 169 fn c1' =>
adamc@11 170 S.map2 (mfc ctx c2,
adamc@6 171 fn c2' =>
adamc@6 172 (CApp (c1', c2'), loc)))
adamc@8 173 | CAbs (x, k, c) =>
adamc@623 174 S.bind2 (mfk ctx k,
adamc@6 175 fn k' =>
adamc@623 176 S.map2 (mfc (bind (ctx, RelC (x, k))) c,
adamc@6 177 fn c' =>
adamc@8 178 (CAbs (x, k', c'), loc)))
adamc@6 179
adamc@6 180 | CName _ => S.return2 cAll
adamc@6 181
adamc@6 182 | CRecord (k, xcs) =>
adamc@623 183 S.bind2 (mfk ctx k,
adamc@6 184 fn k' =>
adamc@6 185 S.map2 (ListUtil.mapfold (fn (x, c) =>
adamc@11 186 S.bind2 (mfc ctx x,
adamc@6 187 fn x' =>
adamc@11 188 S.map2 (mfc ctx c,
adamc@6 189 fn c' =>
adamc@6 190 (x', c'))))
adamc@6 191 xcs,
adamc@6 192 fn xcs' =>
adamc@6 193 (CRecord (k', xcs'), loc)))
adamc@6 194 | CConcat (c1, c2) =>
adamc@11 195 S.bind2 (mfc ctx c1,
adamc@6 196 fn c1' =>
adamc@11 197 S.map2 (mfc ctx c2,
adamc@6 198 fn c2' =>
adamc@6 199 (CConcat (c1', c2'), loc)))
adamc@621 200 | CMap (k1, k2) =>
adamc@623 201 S.bind2 (mfk ctx k1,
adamc@67 202 fn k1' =>
adamc@623 203 S.map2 (mfk ctx k2,
adamc@67 204 fn k2' =>
adamc@621 205 (CMap (k1', k2'), loc)))
adamc@6 206
adamc@82 207 | CUnit => S.return2 cAll
adamc@82 208
adamc@207 209 | CTuple cs =>
adamc@207 210 S.map2 (ListUtil.mapfold (mfc ctx) cs,
adamc@207 211 fn cs' =>
adamc@207 212 (CTuple cs', loc))
adamc@207 213
adamc@207 214 | CProj (c, n) =>
adamc@207 215 S.map2 (mfc ctx c,
adamc@207 216 fn c' =>
adamc@207 217 (CProj (c', n), loc))
adamc@207 218
adamc@6 219 | CError => S.return2 cAll
adam@1639 220 | CUnif (nl, _, _, _, ref (Known c)) => mfc' ctx (!mliftConInCon nl c)
adamc@6 221 | CUnif _ => S.return2 cAll
adam@1302 222
adamc@623 223 | CKAbs (x, c) =>
adamc@623 224 S.map2 (mfc (bind (ctx, RelK x)) c,
adamc@623 225 fn c' =>
adamc@623 226 (CKAbs (x, c'), loc))
adamc@623 227 | CKApp (c, k) =>
adamc@623 228 S.bind2 (mfc ctx c,
adamc@623 229 fn c' =>
adamc@623 230 S.map2 (mfk ctx k,
adamc@623 231 fn k' =>
adamc@623 232 (CKApp (c', k'), loc)))
adamc@623 233 | TKFun (x, c) =>
adamc@623 234 S.map2 (mfc (bind (ctx, RelK x)) c,
adamc@623 235 fn c' =>
adamc@623 236 (TKFun (x, c'), loc))
adamc@6 237 in
adamc@6 238 mfc
adamc@6 239 end
adamc@6 240
adamc@11 241 fun mapfold {kind = fk, con = fc} =
adamc@623 242 mapfoldB {kind = fn () => fk,
adamc@11 243 con = fn () => fc,
adamc@11 244 bind = fn ((), _) => ()} ()
adamc@11 245
adamc@11 246 fun mapB {kind, con, bind} ctx c =
adamc@623 247 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adamc@11 248 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@11 249 bind = bind} ctx c () of
adamc@11 250 S.Continue (c, ()) => c
adamc@34 251 | S.Return _ => raise Fail "ElabUtil.Con.mapB: Impossible"
adamc@34 252
adamc@34 253 fun map {kind, con} s =
adamc@34 254 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@34 255 con = fn c => fn () => S.Continue (con c, ())} s () of
adamc@34 256 S.Return () => raise Fail "ElabUtil.Con.map: Impossible"
adamc@34 257 | S.Continue (s, ()) => s
adamc@11 258
adam@1639 259 fun appB {kind, con, bind} ctx c =
adam@1639 260 case mapfoldB {kind = fn ctx => fn k => fn () => (kind ctx k; S.Continue (k, ())),
adam@1639 261 con = fn ctx => fn c => fn () => (con ctx c; S.Continue (c, ())),
adam@1639 262 bind = bind} ctx c () of
adam@1639 263 S.Continue _ => ()
adam@1639 264 | S.Return _ => raise Fail "ElabUtil.Con.appB: Impossible"
adam@1639 265
adam@1639 266 fun app {kind, con} s =
adam@1639 267 case mapfold {kind = fn k => fn () => (kind k; S.Continue (k, ())),
adam@1639 268 con = fn c => fn () => (con c; S.Continue (c, ()))} s () of
adam@1639 269 S.Return () => raise Fail "ElabUtil.Con.app: Impossible"
adam@1639 270 | S.Continue _ => ()
adam@1639 271
adamc@711 272 fun existsB {kind, con, bind} ctx c =
adamc@711 273 case mapfoldB {kind = fn ctx => fn k => fn () =>
adamc@711 274 if kind (ctx, k) then
adamc@711 275 S.Return ()
adamc@711 276 else
adamc@711 277 S.Continue (k, ()),
adamc@711 278 con = fn ctx => fn c => fn () =>
adamc@711 279 if con (ctx, c) then
adamc@711 280 S.Return ()
adamc@711 281 else
adamc@711 282 S.Continue (c, ()),
adamc@711 283 bind = bind} ctx c () of
adamc@711 284 S.Return _ => true
adamc@711 285 | S.Continue _ => false
adamc@711 286
adamc@711 287 fun exists {kind, con} c =
adamc@6 288 case mapfold {kind = fn k => fn () =>
adamc@6 289 if kind k then
adamc@6 290 S.Return ()
adamc@6 291 else
adamc@6 292 S.Continue (k, ()),
adamc@6 293 con = fn c => fn () =>
adamc@6 294 if con c then
adamc@6 295 S.Return ()
adamc@6 296 else
adamc@711 297 S.Continue (c, ())} c () of
adamc@2 298 S.Return _ => true
adamc@2 299 | S.Continue _ => false
adamc@2 300
adamc@448 301 fun foldB {kind, con, bind} ctx st c =
adamc@623 302 case mapfoldB {kind = fn ctx => fn k => fn st => S.Continue (k, kind (ctx, k, st)),
adamc@448 303 con = fn ctx => fn c => fn st => S.Continue (c, con (ctx, c, st)),
adamc@448 304 bind = bind} ctx c st of
adamc@448 305 S.Continue (_, st) => st
adamc@448 306 | S.Return _ => raise Fail "ElabUtil.Con.foldB: Impossible"
adamc@448 307
adamc@839 308 fun fold {kind, con} st c =
adamc@839 309 case mapfoldB {kind = fn () => fn k => fn st => S.Continue (k, kind (k, st)),
adamc@839 310 con = fn () => fn c => fn st => S.Continue (c, con (c, st)),
adamc@839 311 bind = fn ((), _) => ()} () c st of
adamc@839 312 S.Continue (_, st) => st
adamc@839 313 | S.Return _ => raise Fail "ElabUtil.Con.fold: Impossible"
adamc@839 314
adamc@2 315 end
adamc@2 316
adamc@10 317 structure Exp = struct
adamc@10 318
adamc@11 319 datatype binder =
adamc@623 320 RelK of string
adamc@623 321 | RelC of string * Elab.kind
adamc@792 322 | NamedC of string * int * Elab.kind * Elab.con option
adamc@11 323 | RelE of string * Elab.con
adamc@11 324 | NamedE of string * Elab.con
adamc@11 325
adamc@11 326 fun mapfoldB {kind = fk, con = fc, exp = fe, bind} =
adamc@10 327 let
adamc@623 328 val mfk = Kind.mapfoldB {kind = fk, bind = fn (ctx, x) => bind (ctx, RelK x)}
adamc@10 329
adamc@11 330 fun bind' (ctx, b) =
adamc@11 331 let
adamc@11 332 val b' = case b of
adamc@623 333 Con.RelK x => RelK x
adamc@623 334 | Con.RelC x => RelC x
adamc@623 335 | Con.NamedC x => NamedC x
adamc@11 336 in
adamc@11 337 bind (ctx, b')
adamc@11 338 end
adamc@11 339 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@10 340
adamc@825 341 fun doVars ((p, _), ctx) =
adamc@825 342 case p of
adamc@825 343 PWild => ctx
adamc@825 344 | PVar xt => bind (ctx, RelE xt)
adamc@825 345 | PPrim _ => ctx
adamc@825 346 | PCon (_, _, _, NONE) => ctx
adamc@825 347 | PCon (_, _, _, SOME p) => doVars (p, ctx)
adamc@825 348 | PRecord xpcs =>
adamc@825 349 foldl (fn ((_, p, _), ctx) => doVars (p, ctx))
adamc@825 350 ctx xpcs
adamc@825 351
adamc@11 352 fun mfe ctx e acc =
adamc@11 353 S.bindP (mfe' ctx e acc, fe ctx)
adamc@11 354
adamc@11 355 and mfe' ctx (eAll as (e, loc)) =
adamc@10 356 case e of
adamc@14 357 EPrim _ => S.return2 eAll
adamc@14 358 | ERel _ => S.return2 eAll
adamc@10 359 | ENamed _ => S.return2 eAll
adamc@34 360 | EModProj _ => S.return2 eAll
adamc@10 361 | EApp (e1, e2) =>
adamc@11 362 S.bind2 (mfe ctx e1,
adamc@10 363 fn e1' =>
adamc@11 364 S.map2 (mfe ctx e2,
adamc@10 365 fn e2' =>
adamc@10 366 (EApp (e1', e2'), loc)))
adamc@26 367 | EAbs (x, dom, ran, e) =>
adamc@26 368 S.bind2 (mfc ctx dom,
adamc@26 369 fn dom' =>
adamc@26 370 S.bind2 (mfc ctx ran,
adamc@26 371 fn ran' =>
adamc@26 372 S.map2 (mfe (bind (ctx, RelE (x, dom'))) e,
adamc@26 373 fn e' =>
adamc@26 374 (EAbs (x, dom', ran', e'), loc))))
adamc@26 375
adamc@10 376 | ECApp (e, c) =>
adamc@11 377 S.bind2 (mfe ctx e,
adamc@10 378 fn e' =>
adamc@11 379 S.map2 (mfc ctx c,
adamc@10 380 fn c' =>
adamc@10 381 (ECApp (e', c'), loc)))
adamc@10 382 | ECAbs (expl, x, k, e) =>
adamc@623 383 S.bind2 (mfk ctx k,
adamc@10 384 fn k' =>
adamc@11 385 S.map2 (mfe (bind (ctx, RelC (x, k))) e,
adamc@10 386 fn e' =>
adamc@10 387 (ECAbs (expl, x, k', e'), loc)))
adamc@10 388
adamc@12 389 | ERecord xes =>
adamc@29 390 S.map2 (ListUtil.mapfold (fn (x, e, t) =>
adamc@12 391 S.bind2 (mfc ctx x,
adamc@12 392 fn x' =>
adamc@29 393 S.bind2 (mfe ctx e,
adamc@12 394 fn e' =>
adamc@29 395 S.map2 (mfc ctx t,
adamc@29 396 fn t' =>
adamc@29 397 (x', e', t')))))
adamc@12 398 xes,
adamc@12 399 fn xes' =>
adamc@12 400 (ERecord xes', loc))
adamc@12 401 | EField (e, c, {field, rest}) =>
adamc@12 402 S.bind2 (mfe ctx e,
adamc@12 403 fn e' =>
adamc@12 404 S.bind2 (mfc ctx c,
adamc@12 405 fn c' =>
adamc@12 406 S.bind2 (mfc ctx field,
adamc@12 407 fn field' =>
adamc@12 408 S.map2 (mfc ctx rest,
adamc@12 409 fn rest' =>
adamc@12 410 (EField (e', c', {field = field', rest = rest'}), loc)))))
adamc@445 411 | EConcat (e1, c1, e2, c2) =>
adamc@339 412 S.bind2 (mfe ctx e1,
adamc@339 413 fn e1' =>
adamc@445 414 S.bind2 (mfc ctx c1,
adamc@445 415 fn c1' =>
adamc@339 416 S.bind2 (mfe ctx e2,
adamc@339 417 fn e2' =>
adamc@445 418 S.map2 (mfc ctx c2,
adamc@445 419 fn c2' =>
adamc@445 420 (EConcat (e1', c1', e2', c2'),
adamc@445 421 loc)))))
adamc@149 422 | ECut (e, c, {field, rest}) =>
adamc@149 423 S.bind2 (mfe ctx e,
adamc@149 424 fn e' =>
adamc@149 425 S.bind2 (mfc ctx c,
adamc@149 426 fn c' =>
adamc@149 427 S.bind2 (mfc ctx field,
adamc@149 428 fn field' =>
adamc@149 429 S.map2 (mfc ctx rest,
adamc@149 430 fn rest' =>
adamc@149 431 (ECut (e', c', {field = field', rest = rest'}), loc)))))
adamc@12 432
adamc@493 433 | ECutMulti (e, c, {rest}) =>
adamc@493 434 S.bind2 (mfe ctx e,
adamc@493 435 fn e' =>
adamc@493 436 S.bind2 (mfc ctx c,
adamc@493 437 fn c' =>
adamc@493 438 S.map2 (mfc ctx rest,
adamc@493 439 fn rest' =>
adamc@493 440 (ECutMulti (e', c', {rest = rest'}), loc))))
adamc@493 441
adamc@182 442 | ECase (e, pes, {disc, result}) =>
adamc@171 443 S.bind2 (mfe ctx e,
adamc@171 444 fn e' =>
adamc@171 445 S.bind2 (ListUtil.mapfold (fn (p, e) =>
adamc@448 446 let
adamc@448 447 fun pb ((p, _), ctx) =
adamc@448 448 case p of
adamc@448 449 PWild => ctx
adamc@448 450 | PVar (x, t) => bind (ctx, RelE (x, t))
adamc@448 451 | PPrim _ => ctx
adamc@448 452 | PCon (_, _, _, NONE) => ctx
adamc@448 453 | PCon (_, _, _, SOME p) => pb (p, ctx)
adamc@448 454 | PRecord xps => foldl (fn ((_, p, _), ctx) =>
adamc@448 455 pb (p, ctx)) ctx xps
adamc@448 456 in
adamc@1272 457 S.bind2 (mfp ctx p,
adamc@1272 458 fn p' =>
adamc@1272 459 S.map2 (mfe (pb (p', ctx)) e,
adamc@1272 460 fn e' => (p', e')))
adamc@448 461 end) pes,
adamc@171 462 fn pes' =>
adamc@182 463 S.bind2 (mfc ctx disc,
adamc@182 464 fn disc' =>
adamc@182 465 S.map2 (mfc ctx result,
adamc@182 466 fn result' =>
adamc@182 467 (ECase (e', pes', {disc = disc', result = result'}), loc)))))
adamc@171 468
adamc@10 469 | EError => S.return2 eAll
adamc@228 470 | EUnif (ref (SOME e)) => mfe ctx e
adamc@228 471 | EUnif _ => S.return2 eAll
adamc@447 472
adamc@825 473 | ELet (des, e, t) =>
adamc@447 474 let
adamc@826 475 val (des, ctx') = foldl (fn (ed, (des, ctx)) =>
adamc@826 476 let
adamc@826 477 val ctx' =
adamc@826 478 case #1 ed of
adamc@826 479 EDVal (p, _, _) => doVars (p, ctx)
adamc@826 480 | EDValRec vis =>
adamc@826 481 foldl (fn ((x, t, _), ctx) => bind (ctx, RelE (x, t)))
adamc@826 482 ctx vis
adamc@826 483 in
adamc@826 484 (S.bind2 (des,
adamc@826 485 fn des' =>
adamc@826 486 S.map2 (mfed ctx ed,
adamc@826 487 fn ed' => ed' :: des')),
adamc@826 488 ctx')
adamc@826 489 end)
adamc@447 490 (S.return2 [], ctx) des
adamc@447 491 in
adamc@447 492 S.bind2 (des,
adamc@447 493 fn des' =>
adamc@826 494 S.bind2 (mfe ctx' e,
adamc@447 495 fn e' =>
adamc@825 496 S.map2 (mfc ctx t,
adamc@825 497 fn t' =>
adamc@826 498 (ELet (rev des', e', t'), loc))))
adamc@447 499 end
adamc@447 500
adamc@623 501 | EKAbs (x, e) =>
adamc@623 502 S.map2 (mfe (bind (ctx, RelK x)) e,
adamc@623 503 fn e' =>
adamc@623 504 (EKAbs (x, e'), loc))
adamc@623 505 | EKApp (e, k) =>
adamc@623 506 S.bind2 (mfe ctx e,
adamc@623 507 fn e' =>
adamc@623 508 S.map2 (mfk ctx k,
adamc@623 509 fn k' =>
adamc@623 510 (EKApp (e', k'), loc)))
adamc@623 511
adamc@1272 512 and mfp ctx (pAll as (p, loc)) =
adamc@1272 513 case p of
adamc@1272 514 PWild => S.return2 pAll
adamc@1272 515 | PVar (x, t) =>
adamc@1272 516 S.map2 (mfc ctx t,
adamc@1272 517 fn t' =>
adamc@1272 518 (PVar (x, t'), loc))
adamc@1272 519 | PPrim _ => S.return2 pAll
adamc@1272 520 | PCon (dk, pc, args, po) =>
adamc@1272 521 S.bind2 (ListUtil.mapfold (mfc ctx) args,
adamc@1272 522 fn args' =>
adamc@1272 523 S.map2 ((case po of
adamc@1272 524 NONE => S.return2 NONE
adamc@1272 525 | SOME p => S.map2 (mfp ctx p, SOME)),
adamc@1272 526 fn po' =>
adamc@1272 527 (PCon (dk, pc, args', po'), loc)))
adamc@1272 528 | PRecord xps =>
adamc@1272 529 S.map2 (ListUtil.mapfold (fn (x, p, c) =>
adamc@1272 530 S.bind2 (mfp ctx p,
adamc@1272 531 fn p' =>
adamc@1272 532 S.map2 (mfc ctx c,
adamc@1272 533 fn c' =>
adamc@1272 534 (x, p', c')))) xps,
adamc@1272 535 fn xps' =>
adamc@1272 536 (PRecord xps', loc))
adamc@1272 537
adamc@447 538 and mfed ctx (dAll as (d, loc)) =
adamc@447 539 case d of
adamc@825 540 EDVal (p, t, e) =>
adamc@825 541 S.bind2 (mfc ctx t,
adamc@825 542 fn t' =>
adamc@826 543 S.map2 (mfe ctx e,
adamc@825 544 fn e' =>
adamc@825 545 (EDVal (p, t', e'), loc)))
adamc@447 546 | EDValRec vis =>
adamc@447 547 let
adamc@453 548 val ctx = foldl (fn ((x, t, _), ctx) => bind (ctx, RelE (x, t))) ctx vis
adamc@447 549 in
adamc@447 550 S.map2 (ListUtil.mapfold (mfvi ctx) vis,
adamc@447 551 fn vis' =>
adamc@447 552 (EDValRec vis', loc))
adamc@447 553 end
adamc@447 554
adamc@447 555 and mfvi ctx (x, c, e) =
adamc@447 556 S.bind2 (mfc ctx c,
adamc@447 557 fn c' =>
adamc@447 558 S.map2 (mfe ctx e,
adamc@447 559 fn e' =>
adamc@447 560 (x, c', e')))
adamc@10 561 in
adamc@10 562 mfe
adamc@10 563 end
adamc@10 564
adamc@11 565 fun mapfold {kind = fk, con = fc, exp = fe} =
adamc@623 566 mapfoldB {kind = fn () => fk,
adamc@11 567 con = fn () => fc,
adamc@11 568 exp = fn () => fe,
adamc@11 569 bind = fn ((), _) => ()} ()
adamc@11 570
adam@1795 571 fun existsB {kind, con, exp, bind} ctx e =
adam@1795 572 case mapfoldB {kind = fn ctx => fn k => fn () =>
adam@1795 573 if kind (ctx, k) then
adam@1795 574 S.Return ()
adam@1795 575 else
adam@1795 576 S.Continue (k, ()),
adam@1795 577 con = fn ctx => fn c => fn () =>
adam@1795 578 if con (ctx, c) then
adam@1795 579 S.Return ()
adam@1795 580 else
adam@1795 581 S.Continue (c, ()),
adam@1795 582 exp = fn ctx => fn e => fn () =>
adam@1795 583 if exp (ctx, e) then
adam@1795 584 S.Return ()
adam@1795 585 else
adam@1795 586 S.Continue (e, ()),
adam@1795 587 bind = bind} ctx e () of
adam@1795 588 S.Return _ => true
adam@1795 589 | S.Continue _ => false
adam@1795 590
adamc@10 591 fun exists {kind, con, exp} k =
adamc@10 592 case mapfold {kind = fn k => fn () =>
adamc@10 593 if kind k then
adamc@10 594 S.Return ()
adamc@10 595 else
adamc@10 596 S.Continue (k, ()),
adamc@10 597 con = fn c => fn () =>
adamc@10 598 if con c then
adamc@10 599 S.Return ()
adamc@10 600 else
adamc@10 601 S.Continue (c, ()),
adamc@10 602 exp = fn e => fn () =>
adamc@10 603 if exp e then
adamc@10 604 S.Return ()
adamc@10 605 else
adamc@10 606 S.Continue (e, ())} k () of
adamc@10 607 S.Return _ => true
adamc@10 608 | S.Continue _ => false
adamc@10 609
adamc@211 610 fun mapB {kind, con, exp, bind} ctx e =
adamc@623 611 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adamc@211 612 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@211 613 exp = fn ctx => fn e => fn () => S.Continue (exp ctx e, ()),
adamc@211 614 bind = bind} ctx e () of
adamc@211 615 S.Continue (e, ()) => e
adamc@211 616 | S.Return _ => raise Fail "ElabUtil.Exp.mapB: Impossible"
adamc@211 617
adamc@448 618 fun foldB {kind, con, exp, bind} ctx st e =
adamc@623 619 case mapfoldB {kind = fn ctx => fn k => fn st => S.Continue (k, kind (ctx, k, st)),
adamc@448 620 con = fn ctx => fn c => fn st => S.Continue (c, con (ctx, c, st)),
adamc@448 621 exp = fn ctx => fn e => fn st => S.Continue (e, exp (ctx, e, st)),
adamc@448 622 bind = bind} ctx e st of
adamc@448 623 S.Continue (_, st) => st
adamc@448 624 | S.Return _ => raise Fail "ElabUtil.Exp.foldB: Impossible"
adamc@448 625
adamc@10 626 end
adamc@10 627
adamc@34 628 structure Sgn = struct
adamc@34 629
adamc@34 630 datatype binder =
adamc@623 631 RelK of string
adamc@623 632 | RelC of string * Elab.kind
adamc@792 633 | NamedC of string * int * Elab.kind * Elab.con option
adamc@792 634 | Str of string * int * Elab.sgn
adamc@792 635 | Sgn of string * int * Elab.sgn
adamc@34 636
adamc@34 637 fun mapfoldB {kind, con, sgn_item, sgn, bind} =
adamc@34 638 let
adamc@34 639 fun bind' (ctx, b) =
adamc@34 640 let
adamc@34 641 val b' = case b of
adamc@623 642 Con.RelK x => RelK x
adamc@623 643 | Con.RelC x => RelC x
adamc@623 644 | Con.NamedC x => NamedC x
adamc@34 645 in
adamc@34 646 bind (ctx, b')
adamc@34 647 end
adamc@34 648 val con = Con.mapfoldB {kind = kind, con = con, bind = bind'}
adamc@34 649
adamc@623 650 val kind = Kind.mapfoldB {kind = kind, bind = fn (ctx, x) => bind (ctx, RelK x)}
adamc@34 651
adamc@34 652 fun sgi ctx si acc =
adamc@34 653 S.bindP (sgi' ctx si acc, sgn_item ctx)
adamc@34 654
adamc@156 655 and sgi' ctx (siAll as (si, loc)) =
adamc@34 656 case si of
adamc@34 657 SgiConAbs (x, n, k) =>
adamc@623 658 S.map2 (kind ctx k,
adamc@34 659 fn k' =>
adamc@34 660 (SgiConAbs (x, n, k'), loc))
adamc@34 661 | SgiCon (x, n, k, c) =>
adamc@623 662 S.bind2 (kind ctx k,
adamc@34 663 fn k' =>
adamc@34 664 S.map2 (con ctx c,
adamc@34 665 fn c' =>
adamc@34 666 (SgiCon (x, n, k', c'), loc)))
adamc@805 667 | SgiDatatype dts =>
adamc@805 668 S.map2 (ListUtil.mapfold (fn (x, n, xs, xncs) =>
adamc@805 669 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@805 670 case c of
adamc@805 671 NONE => S.return2 (x, n, c)
adamc@805 672 | SOME c =>
adamc@805 673 S.map2 (con ctx c,
adamc@805 674 fn c' => (x, n, SOME c'))) xncs,
adamc@805 675 fn xncs' => (x, n, xs, xncs'))) dts,
adamc@805 676 fn dts' =>
adamc@805 677 (SgiDatatype dts', loc))
adamc@191 678 | SgiDatatypeImp (x, n, m1, ms, s, xs, xncs) =>
adamc@162 679 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@162 680 case c of
adamc@162 681 NONE => S.return2 (x, n, c)
adamc@162 682 | SOME c =>
adamc@162 683 S.map2 (con ctx c,
adamc@162 684 fn c' => (x, n, SOME c'))) xncs,
adamc@162 685 fn xncs' =>
adamc@191 686 (SgiDatatypeImp (x, n, m1, ms, s, xs, xncs'), loc))
adamc@34 687 | SgiVal (x, n, c) =>
adamc@34 688 S.map2 (con ctx c,
adamc@34 689 fn c' =>
adamc@34 690 (SgiVal (x, n, c'), loc))
adam@2190 691 | SgiStr (im, x, n, s) =>
adamc@34 692 S.map2 (sg ctx s,
adamc@34 693 fn s' =>
adam@2190 694 (SgiStr (im, x, n, s'), loc))
adamc@59 695 | SgiSgn (x, n, s) =>
adamc@59 696 S.map2 (sg ctx s,
adamc@59 697 fn s' =>
adamc@59 698 (SgiSgn (x, n, s'), loc))
adamc@88 699 | SgiConstraint (c1, c2) =>
adamc@88 700 S.bind2 (con ctx c1,
adamc@88 701 fn c1' =>
adamc@88 702 S.map2 (con ctx c2,
adamc@88 703 fn c2' =>
adamc@88 704 (SgiConstraint (c1', c2'), loc)))
adamc@563 705 | SgiClassAbs (x, n, k) =>
adamc@623 706 S.map2 (kind ctx k,
adamc@563 707 fn k' =>
adamc@563 708 (SgiClassAbs (x, n, k'), loc))
adamc@563 709 | SgiClass (x, n, k, c) =>
adamc@623 710 S.bind2 (kind ctx k,
adamc@563 711 fn k' =>
adamc@563 712 S.map2 (con ctx c,
adamc@563 713 fn c' =>
adamc@563 714 (SgiClass (x, n, k', c'), loc)))
adamc@34 715
adamc@34 716 and sg ctx s acc =
adamc@34 717 S.bindP (sg' ctx s acc, sgn ctx)
adamc@34 718
adamc@34 719 and sg' ctx (sAll as (s, loc)) =
adamc@34 720 case s of
adamc@34 721 SgnConst sgis =>
adamc@34 722 S.map2 (ListUtil.mapfoldB (fn (ctx, si) =>
adamc@34 723 (case #1 si of
adamc@329 724 SgiConAbs (x, n, k) =>
adamc@792 725 bind (ctx, NamedC (x, n, k, NONE))
adamc@792 726 | SgiCon (x, n, k, c) =>
adamc@792 727 bind (ctx, NamedC (x, n, k, SOME c))
adamc@805 728 | SgiDatatype dts =>
adamc@805 729 foldl (fn ((x, n, ks, _), ctx) =>
adamc@805 730 let
adamc@805 731 val k' = (KType, loc)
adamc@805 732 val k = foldl (fn (_, k) => (KArrow (k', k), loc))
adamc@805 733 k' ks
adamc@805 734 in
adamc@805 735 bind (ctx, NamedC (x, n, k, NONE))
adamc@805 736 end) ctx dts
adamc@792 737 | SgiDatatypeImp (x, n, m1, ms, s, _, _) =>
adamc@792 738 bind (ctx, NamedC (x, n, (KType, loc),
adamc@792 739 SOME (CModProj (m1, ms, s), loc)))
adamc@34 740 | SgiVal _ => ctx
adam@2190 741 | SgiStr (_, x, n, sgn) =>
adamc@792 742 bind (ctx, Str (x, n, sgn))
adamc@792 743 | SgiSgn (x, n, sgn) =>
adamc@792 744 bind (ctx, Sgn (x, n, sgn))
adamc@203 745 | SgiConstraint _ => ctx
adamc@563 746 | SgiClassAbs (x, n, k) =>
adamc@792 747 bind (ctx, NamedC (x, n, (KArrow (k, (KType, loc)), loc), NONE))
adamc@792 748 | SgiClass (x, n, k, c) =>
adamc@792 749 bind (ctx, NamedC (x, n, (KArrow (k, (KType, loc)), loc), SOME c)),
adamc@34 750 sgi ctx si)) ctx sgis,
adamc@34 751 fn sgis' =>
adamc@34 752 (SgnConst sgis', loc))
adamc@34 753
adamc@34 754 | SgnVar _ => S.return2 sAll
adamc@41 755 | SgnFun (m, n, s1, s2) =>
adamc@41 756 S.bind2 (sg ctx s1,
adamc@41 757 fn s1' =>
adamc@792 758 S.map2 (sg (bind (ctx, Str (m, n, s1'))) s2,
adamc@41 759 fn s2' =>
adamc@41 760 (SgnFun (m, n, s1', s2'), loc)))
adamc@59 761 | SgnProj _ => S.return2 sAll
adam@1864 762 | SgnWhere (sgn, ms, x, c) =>
adamc@42 763 S.bind2 (sg ctx sgn,
adamc@42 764 fn sgn' =>
adamc@42 765 S.map2 (con ctx c,
adamc@42 766 fn c' =>
adam@1864 767 (SgnWhere (sgn', ms, x, c'), loc)))
adamc@34 768 | SgnError => S.return2 sAll
adamc@34 769 in
adamc@34 770 sg
adamc@34 771 end
adamc@34 772
adamc@34 773 fun mapfold {kind, con, sgn_item, sgn} =
adamc@623 774 mapfoldB {kind = fn () => kind,
adamc@34 775 con = fn () => con,
adamc@34 776 sgn_item = fn () => sgn_item,
adamc@34 777 sgn = fn () => sgn,
adamc@34 778 bind = fn ((), _) => ()} ()
adamc@34 779
adamc@792 780 fun mapB {kind, con, sgn_item, sgn, bind} ctx s =
adamc@792 781 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adamc@792 782 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@792 783 sgn_item = fn ctx => fn sgi => fn () => S.Continue (sgn_item ctx sgi, ()),
adamc@792 784 sgn = fn ctx => fn s => fn () => S.Continue (sgn ctx s, ()),
adamc@792 785 bind = bind} ctx s () of
adamc@792 786 S.Continue (s, ()) => s
adamc@792 787 | S.Return _ => raise Fail "ElabUtil.Sgn.mapB: Impossible"
adamc@792 788
adamc@34 789 fun map {kind, con, sgn_item, sgn} s =
adamc@34 790 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@34 791 con = fn c => fn () => S.Continue (con c, ()),
adamc@34 792 sgn_item = fn si => fn () => S.Continue (sgn_item si, ()),
adamc@34 793 sgn = fn s => fn () => S.Continue (sgn s, ())} s () of
adamc@34 794 S.Return () => raise Fail "Elab_util.Sgn.map"
adamc@34 795 | S.Continue (s, ()) => s
adamc@34 796
adamc@2 797 end
adamc@34 798
adamc@76 799 structure Decl = struct
adamc@76 800
adamc@76 801 datatype binder =
adamc@623 802 RelK of string
adamc@623 803 | RelC of string * Elab.kind
adamc@792 804 | NamedC of string * int * Elab.kind * Elab.con option
adamc@76 805 | RelE of string * Elab.con
adamc@76 806 | NamedE of string * Elab.con
adam@1345 807 | Str of string * int * Elab.sgn
adam@1345 808 | Sgn of string * int * Elab.sgn
adamc@76 809
adamc@76 810 fun mapfoldB {kind = fk, con = fc, exp = fe, sgn_item = fsgi, sgn = fsg, str = fst, decl = fd, bind} =
adamc@76 811 let
adamc@623 812 val mfk = Kind.mapfoldB {kind = fk, bind = fn (ctx, x) => bind (ctx, RelK x)}
adamc@76 813
adamc@76 814 fun bind' (ctx, b) =
adamc@76 815 let
adamc@76 816 val b' = case b of
adamc@623 817 Con.RelK x => RelK x
adamc@623 818 | Con.RelC x => RelC x
adamc@623 819 | Con.NamedC x => NamedC x
adamc@76 820 in
adamc@76 821 bind (ctx, b')
adamc@76 822 end
adamc@76 823 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@76 824
adamc@76 825 fun bind' (ctx, b) =
adamc@76 826 let
adamc@76 827 val b' = case b of
adamc@623 828 Exp.RelK x => RelK x
adamc@623 829 | Exp.RelC x => RelC x
adamc@76 830 | Exp.NamedC x => NamedC x
adamc@76 831 | Exp.RelE x => RelE x
adamc@76 832 | Exp.NamedE x => NamedE x
adamc@76 833 in
adamc@76 834 bind (ctx, b')
adamc@76 835 end
adamc@76 836 val mfe = Exp.mapfoldB {kind = fk, con = fc, exp = fe, bind = bind'}
adamc@76 837
adamc@76 838 fun bind' (ctx, b) =
adamc@76 839 let
adamc@76 840 val b' = case b of
adamc@623 841 Sgn.RelK x => RelK x
adamc@623 842 | Sgn.RelC x => RelC x
adamc@76 843 | Sgn.NamedC x => NamedC x
adam@1345 844 | Sgn.Sgn x => Sgn x
adam@1345 845 | Sgn.Str x => Str x
adamc@76 846 in
adamc@76 847 bind (ctx, b')
adamc@76 848 end
adamc@76 849 val mfsg = Sgn.mapfoldB {kind = fk, con = fc, sgn_item = fsgi, sgn = fsg, bind = bind'}
adamc@76 850
adamc@76 851 fun mfst ctx str acc =
adamc@76 852 S.bindP (mfst' ctx str acc, fst ctx)
adamc@76 853
adamc@76 854 and mfst' ctx (strAll as (str, loc)) =
adamc@76 855 case str of
adamc@76 856 StrConst ds =>
adamc@76 857 S.map2 (ListUtil.mapfoldB (fn (ctx, d) =>
adamc@76 858 (case #1 d of
adamc@792 859 DCon (x, n, k, c) =>
adamc@792 860 bind (ctx, NamedC (x, n, k, SOME c))
adamc@805 861 | DDatatype dts =>
adamc@156 862 let
adamc@805 863 fun doOne ((x, n, xs, xncs), ctx) =
adamc@805 864 let
adamc@805 865 val ctx = bind (ctx, NamedC (x, n, (KType, loc), NONE))
adamc@805 866 in
adamc@805 867 foldl (fn ((x, _, co), ctx) =>
adamc@805 868 let
adamc@805 869 val t =
adamc@805 870 case co of
adamc@805 871 NONE => CNamed n
adamc@805 872 | SOME t => TFun (t, (CNamed n, loc))
adamc@805 873
adamc@805 874 val k = (KType, loc)
adamc@805 875 val t = (t, loc)
adamc@805 876 val t = foldr (fn (x, t) =>
adamc@805 877 (TCFun (Explicit,
adamc@805 878 x,
adamc@805 879 k,
adamc@805 880 t), loc))
adamc@805 881 t xs
adamc@805 882 in
adamc@805 883 bind (ctx, NamedE (x, t))
adamc@805 884 end)
adamc@805 885 ctx xncs
adamc@805 886 end
adamc@156 887 in
adamc@805 888 foldl doOne ctx dts
adamc@156 889 end
adamc@191 890 | DDatatypeImp (x, n, m, ms, x', _, _) =>
adamc@792 891 bind (ctx, NamedC (x, n, (KType, loc),
adamc@792 892 SOME (CModProj (m, ms, x'), loc)))
adamc@76 893 | DVal (x, _, c, _) =>
adamc@76 894 bind (ctx, NamedE (x, c))
adamc@123 895 | DValRec vis =>
adamc@123 896 foldl (fn ((x, _, c, _), ctx) => bind (ctx, NamedE (x, c))) ctx vis
adam@1345 897 | DSgn (x, n, sgn) =>
adam@1345 898 bind (ctx, Sgn (x, n, sgn))
adam@1345 899 | DStr (x, n, sgn, _) =>
adam@1345 900 bind (ctx, Str (x, n, sgn))
adam@1345 901 | DFfiStr (x, n, sgn) =>
adam@1345 902 bind (ctx, Str (x, n, sgn))
adamc@100 903 | DConstraint _ => ctx
adamc@203 904 | DExport _ => ctx
adamc@707 905 | DTable (tn, x, n, c, _, pc, _, cc) =>
adamc@705 906 let
adamc@705 907 val ct = (CModProj (n, [], "sql_table"), loc)
adamc@705 908 val ct = (CApp (ct, c), loc)
adamc@707 909 val ct = (CApp (ct, (CConcat (pc, cc), loc)), loc)
adamc@705 910 in
adamc@705 911 bind (ctx, NamedE (x, ct))
adamc@705 912 end
adamc@338 913 | DSequence (tn, x, n) =>
adamc@338 914 bind (ctx, NamedE (x, (CModProj (n, [], "sql_sequence"), loc)))
adamc@754 915 | DView (tn, x, n, _, c) =>
adamc@754 916 let
adamc@754 917 val ct = (CModProj (n, [], "sql_view"), loc)
adamc@754 918 val ct = (CApp (ct, c), loc)
adamc@754 919 in
adamc@754 920 bind (ctx, NamedE (x, ct))
adamc@754 921 end
adamc@459 922 | DDatabase _ => ctx
adamc@459 923 | DCookie (tn, x, n, c) =>
adamc@459 924 bind (ctx, NamedE (x, (CApp ((CModProj (n, [], "cookie"), loc),
adamc@718 925 c), loc)))
adamc@720 926 | DStyle (tn, x, n) =>
adamc@1073 927 bind (ctx, NamedE (x, (CModProj (n, [], "css_class"), loc)))
adamc@1199 928 | DTask _ => ctx
adam@1294 929 | DPolicy _ => ctx
adam@2010 930 | DOnError _ => ctx
adam@2010 931 | DFfi (x, _, _, t) => bind (ctx, NamedE (x, t)),
adamc@76 932 mfd ctx d)) ctx ds,
adamc@76 933 fn ds' => (StrConst ds', loc))
adamc@76 934 | StrVar _ => S.return2 strAll
adamc@76 935 | StrProj (str, x) =>
adamc@76 936 S.map2 (mfst ctx str,
adamc@76 937 fn str' =>
adamc@76 938 (StrProj (str', x), loc))
adamc@76 939 | StrFun (x, n, sgn1, sgn2, str) =>
adamc@76 940 S.bind2 (mfsg ctx sgn1,
adamc@76 941 fn sgn1' =>
adamc@76 942 S.bind2 (mfsg ctx sgn2,
adamc@76 943 fn sgn2' =>
adamc@76 944 S.map2 (mfst ctx str,
adamc@76 945 fn str' =>
adamc@76 946 (StrFun (x, n, sgn1', sgn2', str'), loc))))
adamc@76 947 | StrApp (str1, str2) =>
adamc@76 948 S.bind2 (mfst ctx str1,
adamc@76 949 fn str1' =>
adamc@76 950 S.map2 (mfst ctx str2,
adamc@76 951 fn str2' =>
adamc@76 952 (StrApp (str1', str2'), loc)))
adamc@76 953 | StrError => S.return2 strAll
adamc@76 954
adamc@76 955 and mfd ctx d acc =
adamc@76 956 S.bindP (mfd' ctx d acc, fd ctx)
adamc@76 957
adamc@76 958 and mfd' ctx (dAll as (d, loc)) =
adamc@76 959 case d of
adamc@76 960 DCon (x, n, k, c) =>
adamc@623 961 S.bind2 (mfk ctx k,
adamc@76 962 fn k' =>
adamc@76 963 S.map2 (mfc ctx c,
adamc@76 964 fn c' =>
adamc@76 965 (DCon (x, n, k', c'), loc)))
adamc@805 966 | DDatatype dts =>
adamc@805 967 S.map2 (ListUtil.mapfold (fn (x, n, xs, xncs) =>
adamc@805 968 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@805 969 case c of
adamc@805 970 NONE => S.return2 (x, n, c)
adamc@805 971 | SOME c =>
adamc@805 972 S.map2 (mfc ctx c,
adamc@805 973 fn c' => (x, n, SOME c'))) xncs,
adamc@805 974 fn xncs' =>
adamc@805 975 (x, n, xs, xncs'))) dts,
adamc@805 976 fn dts' =>
adamc@805 977 (DDatatype dts', loc))
adamc@191 978 | DDatatypeImp (x, n, m1, ms, s, xs, xncs) =>
adamc@162 979 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@162 980 case c of
adamc@162 981 NONE => S.return2 (x, n, c)
adamc@162 982 | SOME c =>
adamc@162 983 S.map2 (mfc ctx c,
adamc@162 984 fn c' => (x, n, SOME c'))) xncs,
adamc@162 985 fn xncs' =>
adamc@191 986 (DDatatypeImp (x, n, m1, ms, s, xs, xncs'), loc))
adamc@123 987 | DVal vi =>
adamc@123 988 S.map2 (mfvi ctx vi,
adamc@123 989 fn vi' =>
adamc@123 990 (DVal vi', loc))
adamc@123 991 | DValRec vis =>
adamc@123 992 S.map2 (ListUtil.mapfold (mfvi ctx) vis,
adamc@123 993 fn vis' =>
adamc@123 994 (DValRec vis', loc))
adamc@76 995 | DSgn (x, n, sgn) =>
adamc@76 996 S.map2 (mfsg ctx sgn,
adamc@76 997 fn sgn' =>
adamc@76 998 (DSgn (x, n, sgn'), loc))
adamc@76 999 | DStr (x, n, sgn, str) =>
adamc@76 1000 S.bind2 (mfsg ctx sgn,
adamc@76 1001 fn sgn' =>
adamc@76 1002 S.map2 (mfst ctx str,
adamc@76 1003 fn str' =>
adamc@76 1004 (DStr (x, n, sgn', str'), loc)))
adamc@76 1005 | DFfiStr (x, n, sgn) =>
adamc@76 1006 S.map2 (mfsg ctx sgn,
adamc@76 1007 fn sgn' =>
adamc@76 1008 (DFfiStr (x, n, sgn'), loc))
adamc@88 1009 | DConstraint (c1, c2) =>
adamc@88 1010 S.bind2 (mfc ctx c1,
adamc@88 1011 fn c1' =>
adamc@88 1012 S.map2 (mfc ctx c2,
adamc@88 1013 fn c2' =>
adamc@88 1014 (DConstraint (c1', c2'), loc)))
adamc@109 1015 | DExport (en, sgn, str) =>
adamc@109 1016 S.bind2 (mfsg ctx sgn,
adamc@109 1017 fn sgn' =>
adamc@109 1018 S.map2 (mfst ctx str,
adamc@109 1019 fn str' =>
adamc@109 1020 (DExport (en, sgn', str'), loc)))
adamc@123 1021
adamc@707 1022 | DTable (tn, x, n, c, pe, pc, ce, cc) =>
adamc@704 1023 S.bind2 (mfc ctx c,
adamc@203 1024 fn c' =>
adamc@707 1025 S.bind2 (mfe ctx pe,
adamc@707 1026 fn pe' =>
adamc@707 1027 S.bind2 (mfc ctx pc,
adamc@707 1028 fn pc' =>
adamc@707 1029 S.bind2 (mfe ctx ce,
adamc@707 1030 fn ce' =>
adamc@707 1031 S.map2 (mfc ctx cc,
adamc@707 1032 fn cc' =>
adamc@707 1033 (DTable (tn, x, n, c', pe', pc', ce', cc'), loc))))))
adamc@338 1034 | DSequence _ => S.return2 dAll
adamc@754 1035 | DView (tn, x, n, e, c) =>
adamc@754 1036 S.bind2 (mfe ctx e,
adamc@754 1037 fn e' =>
adamc@754 1038 S.map2 (mfc ctx c,
adamc@754 1039 fn c' =>
adamc@754 1040 (DView (tn, x, n, e', c'), loc)))
adamc@203 1041
adamc@338 1042 | DDatabase _ => S.return2 dAll
adamc@271 1043
adamc@459 1044 | DCookie (tn, x, n, c) =>
adamc@459 1045 S.map2 (mfc ctx c,
adamc@459 1046 fn c' =>
adamc@459 1047 (DCookie (tn, x, n, c'), loc))
adamc@720 1048 | DStyle _ => S.return2 dAll
adamc@1075 1049 | DTask (e1, e2) =>
adamc@1075 1050 S.bind2 (mfe ctx e1,
adamc@1075 1051 fn e1' =>
adamc@1075 1052 S.map2 (mfe ctx e2,
adamc@1075 1053 fn e2' =>
adamc@1075 1054 (DTask (e1', e2'), loc)))
adamc@1199 1055 | DPolicy e1 =>
adamc@1199 1056 S.map2 (mfe ctx e1,
adamc@1199 1057 fn e1' =>
adamc@1199 1058 (DPolicy e1', loc))
adam@1294 1059 | DOnError _ => S.return2 dAll
adam@2010 1060 | DFfi (x, n, modes, t) =>
adam@2010 1061 S.map2 (mfc ctx t,
adam@2010 1062 fn t' =>
adam@2010 1063 (DFfi (x, n, modes, t'), loc))
adamc@459 1064
adamc@123 1065 and mfvi ctx (x, n, c, e) =
adamc@123 1066 S.bind2 (mfc ctx c,
adamc@123 1067 fn c' =>
adamc@123 1068 S.map2 (mfe ctx e,
adamc@123 1069 fn e' =>
adamc@123 1070 (x, n, c', e')))
adamc@76 1071 in
adamc@76 1072 mfd
adamc@76 1073 end
adamc@76 1074
adamc@76 1075 fun mapfold {kind, con, exp, sgn_item, sgn, str, decl} =
adamc@623 1076 mapfoldB {kind = fn () => kind,
adamc@76 1077 con = fn () => con,
adamc@76 1078 exp = fn () => exp,
adamc@76 1079 sgn_item = fn () => sgn_item,
adamc@76 1080 sgn = fn () => sgn,
adamc@76 1081 str = fn () => str,
adamc@76 1082 decl = fn () => decl,
adamc@76 1083 bind = fn ((), _) => ()} ()
adamc@76 1084
adamc@76 1085 fun exists {kind, con, exp, sgn_item, sgn, str, decl} k =
adamc@76 1086 case mapfold {kind = fn k => fn () =>
adamc@76 1087 if kind k then
adamc@76 1088 S.Return ()
adamc@76 1089 else
adamc@76 1090 S.Continue (k, ()),
adamc@76 1091 con = fn c => fn () =>
adamc@76 1092 if con c then
adamc@76 1093 S.Return ()
adamc@76 1094 else
adamc@76 1095 S.Continue (c, ()),
adamc@76 1096 exp = fn e => fn () =>
adamc@76 1097 if exp e then
adamc@76 1098 S.Return ()
adamc@76 1099 else
adamc@76 1100 S.Continue (e, ()),
adamc@76 1101 sgn_item = fn sgi => fn () =>
adamc@76 1102 if sgn_item sgi then
adamc@76 1103 S.Return ()
adamc@76 1104 else
adamc@76 1105 S.Continue (sgi, ()),
adamc@76 1106 sgn = fn x => fn () =>
adamc@76 1107 if sgn x then
adamc@76 1108 S.Return ()
adamc@76 1109 else
adamc@76 1110 S.Continue (x, ()),
adamc@76 1111 str = fn x => fn () =>
adamc@76 1112 if str x then
adamc@76 1113 S.Return ()
adamc@76 1114 else
adamc@76 1115 S.Continue (x, ()),
adamc@76 1116 decl = fn x => fn () =>
adamc@76 1117 if decl x then
adamc@76 1118 S.Return ()
adamc@76 1119 else
adamc@76 1120 S.Continue (x, ())} k () of
adamc@76 1121 S.Return _ => true
adamc@76 1122 | S.Continue _ => false
adamc@76 1123
adamc@76 1124 fun search {kind, con, exp, sgn_item, sgn, str, decl} k =
adamc@76 1125 case mapfold {kind = fn x => fn () =>
adamc@76 1126 case kind x of
adamc@76 1127 NONE => S.Continue (x, ())
adamc@76 1128 | SOME v => S.Return v,
adamc@76 1129
adamc@76 1130 con = fn x => fn () =>
adamc@76 1131 case con x of
adamc@76 1132 NONE => S.Continue (x, ())
adamc@76 1133 | SOME v => S.Return v,
adamc@76 1134
adamc@76 1135 exp = fn x => fn () =>
adamc@76 1136 case exp x of
adamc@76 1137 NONE => S.Continue (x, ())
adamc@76 1138 | SOME v => S.Return v,
adamc@76 1139
adamc@76 1140 sgn_item = fn x => fn () =>
adamc@76 1141 case sgn_item x of
adamc@76 1142 NONE => S.Continue (x, ())
adamc@76 1143 | SOME v => S.Return v,
adamc@76 1144
adamc@76 1145 sgn = fn x => fn () =>
adamc@76 1146 case sgn x of
adamc@76 1147 NONE => S.Continue (x, ())
adamc@76 1148 | SOME v => S.Return v,
adamc@76 1149
adamc@76 1150 str = fn x => fn () =>
adamc@76 1151 case str x of
adamc@76 1152 NONE => S.Continue (x, ())
adamc@76 1153 | SOME v => S.Return v,
adamc@76 1154
adamc@76 1155 decl = fn x => fn () =>
adamc@76 1156 case decl x of
adamc@76 1157 NONE => S.Continue (x, ())
adamc@76 1158 | SOME v => S.Return v
adamc@76 1159
adamc@76 1160 } k () of
adamc@76 1161 S.Return x => SOME x
adamc@76 1162 | S.Continue _ => NONE
adamc@76 1163
adamc@448 1164 fun foldMapB {kind, con, exp, sgn_item, sgn, str, decl, bind} ctx st d =
adamc@623 1165 case mapfoldB {kind = fn ctx => fn x => fn st => S.Continue (kind (ctx, x, st)),
adamc@448 1166 con = fn ctx => fn x => fn st => S.Continue (con (ctx, x, st)),
adamc@448 1167 exp = fn ctx => fn x => fn st => S.Continue (exp (ctx, x, st)),
adamc@448 1168 sgn_item = fn ctx => fn x => fn st => S.Continue (sgn_item (ctx, x, st)),
adamc@448 1169 sgn = fn ctx => fn x => fn st => S.Continue (sgn (ctx, x, st)),
adamc@448 1170 str = fn ctx => fn x => fn st => S.Continue (str (ctx, x, st)),
adamc@448 1171 decl = fn ctx => fn x => fn st => S.Continue (decl (ctx, x, st)),
adamc@448 1172 bind = bind} ctx d st of
adamc@448 1173 S.Continue x => x
adamc@448 1174 | S.Return _ => raise Fail "ElabUtil.Decl.foldMapB: Impossible"
adamc@448 1175
adam@1345 1176 fun map {kind, con, exp, sgn_item, sgn, str, decl} s =
adam@1345 1177 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adam@1345 1178 con = fn c => fn () => S.Continue (con c, ()),
adam@1345 1179 exp = fn e => fn () => S.Continue (exp e, ()),
adam@1345 1180 sgn_item = fn si => fn () => S.Continue (sgn_item si, ()),
adam@1345 1181 sgn = fn s => fn () => S.Continue (sgn s, ()),
adam@1345 1182 str = fn si => fn () => S.Continue (str si, ()),
adam@1345 1183 decl = fn s => fn () => S.Continue (decl s, ())} s () of
adam@1345 1184 S.Return () => raise Fail "Elab_util.Decl.map"
adam@1345 1185 | S.Continue (s, ()) => s
adam@1345 1186
adam@1345 1187 fun mapB {kind, con, exp, sgn_item, sgn, str, decl, bind} ctx s =
adam@1345 1188 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adam@1345 1189 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adam@1345 1190 exp = fn ctx => fn c => fn () => S.Continue (exp ctx c, ()),
adam@1345 1191 sgn_item = fn ctx => fn sgi => fn () => S.Continue (sgn_item ctx sgi, ()),
adam@1345 1192 sgn = fn ctx => fn s => fn () => S.Continue (sgn ctx s, ()),
adam@1345 1193 str = fn ctx => fn sgi => fn () => S.Continue (str ctx sgi, ()),
adam@1345 1194 decl = fn ctx => fn s => fn () => S.Continue (decl ctx s, ()),
adam@1345 1195 bind = bind} ctx s () of
adam@1345 1196 S.Continue (s, ()) => s
adam@1345 1197 | S.Return _ => raise Fail "ElabUtil.Decl.mapB: Impossible"
adam@1345 1198
adam@1732 1199 fun fold {kind, con, exp, sgn_item, sgn, str, decl} (st : 'a) d : 'a =
adam@1732 1200 case mapfold {kind = fn k => fn st => S.Continue (k, kind (k, st)),
adam@1732 1201 con = fn c => fn st => S.Continue (c, con (c, st)),
adam@1732 1202 exp = fn e => fn st => S.Continue (e, exp (e, st)),
adam@1732 1203 sgn_item = fn sgi => fn st => S.Continue (sgi, sgn_item (sgi, st)),
adam@1732 1204 sgn = fn s => fn st => S.Continue (s, sgn (s, st)),
adam@1732 1205 str = fn str' => fn st => S.Continue (str', str (str', st)),
adam@1732 1206 decl = fn d => fn st => S.Continue (d, decl (d, st))} d st of
adam@1732 1207 S.Continue (_, st) => st
adam@1732 1208 | S.Return _ => raise Fail "ElabUtil.Decl.fold: Impossible"
adam@1732 1209
adamc@448 1210 end
adamc@448 1211
adamc@448 1212 structure File = struct
adamc@448 1213
adamc@448 1214 fun maxName ds = foldl (fn (d, count) => Int.max (maxNameDecl d, count)) 0 ds
adamc@448 1215
adamc@448 1216 and maxNameDecl (d, _) =
adamc@448 1217 case d of
adamc@448 1218 DCon (_, n, _, _) => n
adamc@805 1219 | DDatatype dts =>
adamc@805 1220 foldl (fn ((_, n, _, ns), max) =>
adamc@448 1221 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@805 1222 (Int.max (n, max)) ns) 0 dts
adamc@448 1223 | DDatatypeImp (_, n1, n2, _, _, _, ns) =>
adamc@448 1224 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@448 1225 (Int.max (n1, n2)) ns
adamc@448 1226 | DVal (_, n, _, _) => n
adamc@448 1227 | DValRec vis => foldl (fn ((_, n, _, _), count) => Int.max (n, count)) 0 vis
adamc@448 1228 | DStr (_, n, sgn, str) => Int.max (n, Int.max (maxNameSgn sgn, maxNameStr str))
adamc@448 1229 | DSgn (_, n, sgn) => Int.max (n, maxNameSgn sgn)
adamc@448 1230 | DFfiStr (_, n, sgn) => Int.max (n, maxNameSgn sgn)
adamc@448 1231 | DConstraint _ => 0
adamc@448 1232 | DExport _ => 0
adamc@707 1233 | DTable (n1, _, n2, _, _, _, _, _) => Int.max (n1, n2)
adamc@459 1234 | DSequence (n1, _, n2) => Int.max (n1, n2)
adamc@754 1235 | DView (n1, _, n2, _, _) => Int.max (n1, n2)
adamc@448 1236 | DDatabase _ => 0
adamc@459 1237 | DCookie (n1, _, n2, _) => Int.max (n1, n2)
adamc@720 1238 | DStyle (n1, _, n2) => Int.max (n1, n2)
adamc@1075 1239 | DTask _ => 0
adamc@1199 1240 | DPolicy _ => 0
adam@1294 1241 | DOnError _ => 0
adam@2010 1242 | DFfi (_, n, _, _) => n
adamc@448 1243 and maxNameStr (str, _) =
adamc@448 1244 case str of
adamc@448 1245 StrConst ds => maxName ds
adamc@448 1246 | StrVar n => n
adamc@448 1247 | StrProj (str, _) => maxNameStr str
adamc@448 1248 | StrFun (_, n, dom, ran, str) => foldl Int.max n [maxNameSgn dom, maxNameSgn ran, maxNameStr str]
adamc@448 1249 | StrApp (str1, str2) => Int.max (maxNameStr str1, maxNameStr str2)
adamc@448 1250 | StrError => 0
adamc@448 1251
adamc@448 1252 and maxNameSgn (sgn, _) =
adamc@448 1253 case sgn of
adamc@448 1254 SgnConst sgis => foldl (fn (sgi, count) => Int.max (maxNameSgi sgi, count)) 0 sgis
adamc@448 1255 | SgnVar n => n
adamc@448 1256 | SgnFun (_, n, dom, ran) => Int.max (n, Int.max (maxNameSgn dom, maxNameSgn ran))
adam@1864 1257 | SgnWhere (sgn, _, _, _) => maxNameSgn sgn
adamc@448 1258 | SgnProj (n, _, _) => n
adamc@448 1259 | SgnError => 0
adamc@448 1260
adamc@448 1261 and maxNameSgi (sgi, _) =
adamc@448 1262 case sgi of
adamc@448 1263 SgiConAbs (_, n, _) => n
adamc@448 1264 | SgiCon (_, n, _, _) => n
adamc@805 1265 | SgiDatatype dts =>
adamc@805 1266 foldl (fn ((_, n, _, ns), max) =>
adamc@805 1267 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@805 1268 (Int.max (n, max)) ns) 0 dts
adamc@448 1269 | SgiDatatypeImp (_, n1, n2, _, _, _, ns) =>
adamc@448 1270 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@448 1271 (Int.max (n1, n2)) ns
adamc@448 1272 | SgiVal (_, n, _) => n
adam@2190 1273 | SgiStr (_, _, n, sgn) => Int.max (n, maxNameSgn sgn)
adamc@448 1274 | SgiSgn (_, n, sgn) => Int.max (n, maxNameSgn sgn)
adamc@448 1275 | SgiConstraint _ => 0
adamc@563 1276 | SgiClassAbs (_, n, _) => n
adamc@563 1277 | SgiClass (_, n, _, _) => n
adam@1584 1278
adam@1584 1279 fun findDecl pred file =
adam@1584 1280 let
adam@1584 1281 fun decl d =
adam@1584 1282 let
adam@1584 1283 val r = case #1 d of
adam@1584 1284 DStr (_, _, _, s) => str s
adam@1584 1285 | _ => NONE
adam@1584 1286 in
adam@1584 1287 case r of
adam@1584 1288 NONE => if pred d then SOME d else NONE
adam@1584 1289 | _ => r
adam@1584 1290 end
adam@1584 1291
adam@1584 1292 and str s =
adam@1584 1293 case #1 s of
adam@1584 1294 StrConst ds => ListUtil.search decl ds
adam@1584 1295 | StrFun (_, _, _, _, s) => str s
adam@1584 1296 | StrApp (s1, s2) =>
adam@1584 1297 (case str s1 of
adam@1584 1298 NONE => str s2
adam@1584 1299 | r => r)
adam@1584 1300 | _ => NONE
adam@1584 1301 in
adam@1584 1302 ListUtil.search decl file
adam@1584 1303 end
adamc@448 1304
adamc@34 1305 end
adamc@76 1306
adamc@76 1307 end