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annotate src/elab_util.sml @ 1639:6c00d8af6239

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Add a new scoping check for unification variables, to fix a type inference bug
author Adam Chlipala <adam@chlipala.net>
date Sun, 18 Dec 2011 11:29:13 -0500
parents c37d8341940a
children 4a03aa3251cb
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
adamc@10 571 fun exists {kind, con, exp} k =
adamc@10 572 case mapfold {kind = fn k => fn () =>
adamc@10 573 if kind k then
adamc@10 574 S.Return ()
adamc@10 575 else
adamc@10 576 S.Continue (k, ()),
adamc@10 577 con = fn c => fn () =>
adamc@10 578 if con c then
adamc@10 579 S.Return ()
adamc@10 580 else
adamc@10 581 S.Continue (c, ()),
adamc@10 582 exp = fn e => fn () =>
adamc@10 583 if exp e then
adamc@10 584 S.Return ()
adamc@10 585 else
adamc@10 586 S.Continue (e, ())} k () of
adamc@10 587 S.Return _ => true
adamc@10 588 | S.Continue _ => false
adamc@10 589
adamc@211 590 fun mapB {kind, con, exp, bind} ctx e =
adamc@623 591 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adamc@211 592 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@211 593 exp = fn ctx => fn e => fn () => S.Continue (exp ctx e, ()),
adamc@211 594 bind = bind} ctx e () of
adamc@211 595 S.Continue (e, ()) => e
adamc@211 596 | S.Return _ => raise Fail "ElabUtil.Exp.mapB: Impossible"
adamc@211 597
adamc@448 598 fun foldB {kind, con, exp, bind} ctx st e =
adamc@623 599 case mapfoldB {kind = fn ctx => fn k => fn st => S.Continue (k, kind (ctx, k, st)),
adamc@448 600 con = fn ctx => fn c => fn st => S.Continue (c, con (ctx, c, st)),
adamc@448 601 exp = fn ctx => fn e => fn st => S.Continue (e, exp (ctx, e, st)),
adamc@448 602 bind = bind} ctx e st of
adamc@448 603 S.Continue (_, st) => st
adamc@448 604 | S.Return _ => raise Fail "ElabUtil.Exp.foldB: Impossible"
adamc@448 605
adamc@10 606 end
adamc@10 607
adamc@34 608 structure Sgn = struct
adamc@34 609
adamc@34 610 datatype binder =
adamc@623 611 RelK of string
adamc@623 612 | RelC of string * Elab.kind
adamc@792 613 | NamedC of string * int * Elab.kind * Elab.con option
adamc@792 614 | Str of string * int * Elab.sgn
adamc@792 615 | Sgn of string * int * Elab.sgn
adamc@34 616
adamc@34 617 fun mapfoldB {kind, con, sgn_item, sgn, bind} =
adamc@34 618 let
adamc@34 619 fun bind' (ctx, b) =
adamc@34 620 let
adamc@34 621 val b' = case b of
adamc@623 622 Con.RelK x => RelK x
adamc@623 623 | Con.RelC x => RelC x
adamc@623 624 | Con.NamedC x => NamedC x
adamc@34 625 in
adamc@34 626 bind (ctx, b')
adamc@34 627 end
adamc@34 628 val con = Con.mapfoldB {kind = kind, con = con, bind = bind'}
adamc@34 629
adamc@623 630 val kind = Kind.mapfoldB {kind = kind, bind = fn (ctx, x) => bind (ctx, RelK x)}
adamc@34 631
adamc@34 632 fun sgi ctx si acc =
adamc@34 633 S.bindP (sgi' ctx si acc, sgn_item ctx)
adamc@34 634
adamc@156 635 and sgi' ctx (siAll as (si, loc)) =
adamc@34 636 case si of
adamc@34 637 SgiConAbs (x, n, k) =>
adamc@623 638 S.map2 (kind ctx k,
adamc@34 639 fn k' =>
adamc@34 640 (SgiConAbs (x, n, k'), loc))
adamc@34 641 | SgiCon (x, n, k, c) =>
adamc@623 642 S.bind2 (kind ctx k,
adamc@34 643 fn k' =>
adamc@34 644 S.map2 (con ctx c,
adamc@34 645 fn c' =>
adamc@34 646 (SgiCon (x, n, k', c'), loc)))
adamc@805 647 | SgiDatatype dts =>
adamc@805 648 S.map2 (ListUtil.mapfold (fn (x, n, xs, xncs) =>
adamc@805 649 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@805 650 case c of
adamc@805 651 NONE => S.return2 (x, n, c)
adamc@805 652 | SOME c =>
adamc@805 653 S.map2 (con ctx c,
adamc@805 654 fn c' => (x, n, SOME c'))) xncs,
adamc@805 655 fn xncs' => (x, n, xs, xncs'))) dts,
adamc@805 656 fn dts' =>
adamc@805 657 (SgiDatatype dts', loc))
adamc@191 658 | SgiDatatypeImp (x, n, m1, ms, s, xs, xncs) =>
adamc@162 659 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@162 660 case c of
adamc@162 661 NONE => S.return2 (x, n, c)
adamc@162 662 | SOME c =>
adamc@162 663 S.map2 (con ctx c,
adamc@162 664 fn c' => (x, n, SOME c'))) xncs,
adamc@162 665 fn xncs' =>
adamc@191 666 (SgiDatatypeImp (x, n, m1, ms, s, xs, xncs'), loc))
adamc@34 667 | SgiVal (x, n, c) =>
adamc@34 668 S.map2 (con ctx c,
adamc@34 669 fn c' =>
adamc@34 670 (SgiVal (x, n, c'), loc))
adamc@34 671 | SgiStr (x, n, s) =>
adamc@34 672 S.map2 (sg ctx s,
adamc@34 673 fn s' =>
adamc@34 674 (SgiStr (x, n, s'), loc))
adamc@59 675 | SgiSgn (x, n, s) =>
adamc@59 676 S.map2 (sg ctx s,
adamc@59 677 fn s' =>
adamc@59 678 (SgiSgn (x, n, s'), loc))
adamc@88 679 | SgiConstraint (c1, c2) =>
adamc@88 680 S.bind2 (con ctx c1,
adamc@88 681 fn c1' =>
adamc@88 682 S.map2 (con ctx c2,
adamc@88 683 fn c2' =>
adamc@88 684 (SgiConstraint (c1', c2'), loc)))
adamc@563 685 | SgiClassAbs (x, n, k) =>
adamc@623 686 S.map2 (kind ctx k,
adamc@563 687 fn k' =>
adamc@563 688 (SgiClassAbs (x, n, k'), loc))
adamc@563 689 | SgiClass (x, n, k, c) =>
adamc@623 690 S.bind2 (kind ctx k,
adamc@563 691 fn k' =>
adamc@563 692 S.map2 (con ctx c,
adamc@563 693 fn c' =>
adamc@563 694 (SgiClass (x, n, k', c'), loc)))
adamc@34 695
adamc@34 696 and sg ctx s acc =
adamc@34 697 S.bindP (sg' ctx s acc, sgn ctx)
adamc@34 698
adamc@34 699 and sg' ctx (sAll as (s, loc)) =
adamc@34 700 case s of
adamc@34 701 SgnConst sgis =>
adamc@34 702 S.map2 (ListUtil.mapfoldB (fn (ctx, si) =>
adamc@34 703 (case #1 si of
adamc@329 704 SgiConAbs (x, n, k) =>
adamc@792 705 bind (ctx, NamedC (x, n, k, NONE))
adamc@792 706 | SgiCon (x, n, k, c) =>
adamc@792 707 bind (ctx, NamedC (x, n, k, SOME c))
adamc@805 708 | SgiDatatype dts =>
adamc@805 709 foldl (fn ((x, n, ks, _), ctx) =>
adamc@805 710 let
adamc@805 711 val k' = (KType, loc)
adamc@805 712 val k = foldl (fn (_, k) => (KArrow (k', k), loc))
adamc@805 713 k' ks
adamc@805 714 in
adamc@805 715 bind (ctx, NamedC (x, n, k, NONE))
adamc@805 716 end) ctx dts
adamc@792 717 | SgiDatatypeImp (x, n, m1, ms, s, _, _) =>
adamc@792 718 bind (ctx, NamedC (x, n, (KType, loc),
adamc@792 719 SOME (CModProj (m1, ms, s), loc)))
adamc@34 720 | SgiVal _ => ctx
adamc@792 721 | SgiStr (x, n, sgn) =>
adamc@792 722 bind (ctx, Str (x, n, sgn))
adamc@792 723 | SgiSgn (x, n, sgn) =>
adamc@792 724 bind (ctx, Sgn (x, n, sgn))
adamc@203 725 | SgiConstraint _ => ctx
adamc@563 726 | SgiClassAbs (x, n, k) =>
adamc@792 727 bind (ctx, NamedC (x, n, (KArrow (k, (KType, loc)), loc), NONE))
adamc@792 728 | SgiClass (x, n, k, c) =>
adamc@792 729 bind (ctx, NamedC (x, n, (KArrow (k, (KType, loc)), loc), SOME c)),
adamc@34 730 sgi ctx si)) ctx sgis,
adamc@34 731 fn sgis' =>
adamc@34 732 (SgnConst sgis', loc))
adamc@34 733
adamc@34 734 | SgnVar _ => S.return2 sAll
adamc@41 735 | SgnFun (m, n, s1, s2) =>
adamc@41 736 S.bind2 (sg ctx s1,
adamc@41 737 fn s1' =>
adamc@792 738 S.map2 (sg (bind (ctx, Str (m, n, s1'))) s2,
adamc@41 739 fn s2' =>
adamc@41 740 (SgnFun (m, n, s1', s2'), loc)))
adamc@59 741 | SgnProj _ => S.return2 sAll
adamc@42 742 | SgnWhere (sgn, x, c) =>
adamc@42 743 S.bind2 (sg ctx sgn,
adamc@42 744 fn sgn' =>
adamc@42 745 S.map2 (con ctx c,
adamc@42 746 fn c' =>
adamc@42 747 (SgnWhere (sgn', x, c'), loc)))
adamc@34 748 | SgnError => S.return2 sAll
adamc@34 749 in
adamc@34 750 sg
adamc@34 751 end
adamc@34 752
adamc@34 753 fun mapfold {kind, con, sgn_item, sgn} =
adamc@623 754 mapfoldB {kind = fn () => kind,
adamc@34 755 con = fn () => con,
adamc@34 756 sgn_item = fn () => sgn_item,
adamc@34 757 sgn = fn () => sgn,
adamc@34 758 bind = fn ((), _) => ()} ()
adamc@34 759
adamc@792 760 fun mapB {kind, con, sgn_item, sgn, bind} ctx s =
adamc@792 761 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adamc@792 762 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@792 763 sgn_item = fn ctx => fn sgi => fn () => S.Continue (sgn_item ctx sgi, ()),
adamc@792 764 sgn = fn ctx => fn s => fn () => S.Continue (sgn ctx s, ()),
adamc@792 765 bind = bind} ctx s () of
adamc@792 766 S.Continue (s, ()) => s
adamc@792 767 | S.Return _ => raise Fail "ElabUtil.Sgn.mapB: Impossible"
adamc@792 768
adamc@34 769 fun map {kind, con, sgn_item, sgn} s =
adamc@34 770 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@34 771 con = fn c => fn () => S.Continue (con c, ()),
adamc@34 772 sgn_item = fn si => fn () => S.Continue (sgn_item si, ()),
adamc@34 773 sgn = fn s => fn () => S.Continue (sgn s, ())} s () of
adamc@34 774 S.Return () => raise Fail "Elab_util.Sgn.map"
adamc@34 775 | S.Continue (s, ()) => s
adamc@34 776
adamc@2 777 end
adamc@34 778
adamc@76 779 structure Decl = struct
adamc@76 780
adamc@76 781 datatype binder =
adamc@623 782 RelK of string
adamc@623 783 | RelC of string * Elab.kind
adamc@792 784 | NamedC of string * int * Elab.kind * Elab.con option
adamc@76 785 | RelE of string * Elab.con
adamc@76 786 | NamedE of string * Elab.con
adam@1345 787 | Str of string * int * Elab.sgn
adam@1345 788 | Sgn of string * int * Elab.sgn
adamc@76 789
adamc@76 790 fun mapfoldB {kind = fk, con = fc, exp = fe, sgn_item = fsgi, sgn = fsg, str = fst, decl = fd, bind} =
adamc@76 791 let
adamc@623 792 val mfk = Kind.mapfoldB {kind = fk, bind = fn (ctx, x) => bind (ctx, RelK x)}
adamc@76 793
adamc@76 794 fun bind' (ctx, b) =
adamc@76 795 let
adamc@76 796 val b' = case b of
adamc@623 797 Con.RelK x => RelK x
adamc@623 798 | Con.RelC x => RelC x
adamc@623 799 | Con.NamedC x => NamedC x
adamc@76 800 in
adamc@76 801 bind (ctx, b')
adamc@76 802 end
adamc@76 803 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@76 804
adamc@76 805 fun bind' (ctx, b) =
adamc@76 806 let
adamc@76 807 val b' = case b of
adamc@623 808 Exp.RelK x => RelK x
adamc@623 809 | Exp.RelC x => RelC x
adamc@76 810 | Exp.NamedC x => NamedC x
adamc@76 811 | Exp.RelE x => RelE x
adamc@76 812 | Exp.NamedE x => NamedE x
adamc@76 813 in
adamc@76 814 bind (ctx, b')
adamc@76 815 end
adamc@76 816 val mfe = Exp.mapfoldB {kind = fk, con = fc, exp = fe, bind = bind'}
adamc@76 817
adamc@76 818 fun bind' (ctx, b) =
adamc@76 819 let
adamc@76 820 val b' = case b of
adamc@623 821 Sgn.RelK x => RelK x
adamc@623 822 | Sgn.RelC x => RelC x
adamc@76 823 | Sgn.NamedC x => NamedC x
adam@1345 824 | Sgn.Sgn x => Sgn x
adam@1345 825 | Sgn.Str x => Str x
adamc@76 826 in
adamc@76 827 bind (ctx, b')
adamc@76 828 end
adamc@76 829 val mfsg = Sgn.mapfoldB {kind = fk, con = fc, sgn_item = fsgi, sgn = fsg, bind = bind'}
adamc@76 830
adamc@76 831 fun mfst ctx str acc =
adamc@76 832 S.bindP (mfst' ctx str acc, fst ctx)
adamc@76 833
adamc@76 834 and mfst' ctx (strAll as (str, loc)) =
adamc@76 835 case str of
adamc@76 836 StrConst ds =>
adamc@76 837 S.map2 (ListUtil.mapfoldB (fn (ctx, d) =>
adamc@76 838 (case #1 d of
adamc@792 839 DCon (x, n, k, c) =>
adamc@792 840 bind (ctx, NamedC (x, n, k, SOME c))
adamc@805 841 | DDatatype dts =>
adamc@156 842 let
adamc@805 843 fun doOne ((x, n, xs, xncs), ctx) =
adamc@805 844 let
adamc@805 845 val ctx = bind (ctx, NamedC (x, n, (KType, loc), NONE))
adamc@805 846 in
adamc@805 847 foldl (fn ((x, _, co), ctx) =>
adamc@805 848 let
adamc@805 849 val t =
adamc@805 850 case co of
adamc@805 851 NONE => CNamed n
adamc@805 852 | SOME t => TFun (t, (CNamed n, loc))
adamc@805 853
adamc@805 854 val k = (KType, loc)
adamc@805 855 val t = (t, loc)
adamc@805 856 val t = foldr (fn (x, t) =>
adamc@805 857 (TCFun (Explicit,
adamc@805 858 x,
adamc@805 859 k,
adamc@805 860 t), loc))
adamc@805 861 t xs
adamc@805 862 in
adamc@805 863 bind (ctx, NamedE (x, t))
adamc@805 864 end)
adamc@805 865 ctx xncs
adamc@805 866 end
adamc@156 867 in
adamc@805 868 foldl doOne ctx dts
adamc@156 869 end
adamc@191 870 | DDatatypeImp (x, n, m, ms, x', _, _) =>
adamc@792 871 bind (ctx, NamedC (x, n, (KType, loc),
adamc@792 872 SOME (CModProj (m, ms, x'), loc)))
adamc@76 873 | DVal (x, _, c, _) =>
adamc@76 874 bind (ctx, NamedE (x, c))
adamc@123 875 | DValRec vis =>
adamc@123 876 foldl (fn ((x, _, c, _), ctx) => bind (ctx, NamedE (x, c))) ctx vis
adam@1345 877 | DSgn (x, n, sgn) =>
adam@1345 878 bind (ctx, Sgn (x, n, sgn))
adam@1345 879 | DStr (x, n, sgn, _) =>
adam@1345 880 bind (ctx, Str (x, n, sgn))
adam@1345 881 | DFfiStr (x, n, sgn) =>
adam@1345 882 bind (ctx, Str (x, n, sgn))
adamc@100 883 | DConstraint _ => ctx
adamc@203 884 | DExport _ => ctx
adamc@707 885 | DTable (tn, x, n, c, _, pc, _, cc) =>
adamc@705 886 let
adamc@705 887 val ct = (CModProj (n, [], "sql_table"), loc)
adamc@705 888 val ct = (CApp (ct, c), loc)
adamc@707 889 val ct = (CApp (ct, (CConcat (pc, cc), loc)), loc)
adamc@705 890 in
adamc@705 891 bind (ctx, NamedE (x, ct))
adamc@705 892 end
adamc@338 893 | DSequence (tn, x, n) =>
adamc@338 894 bind (ctx, NamedE (x, (CModProj (n, [], "sql_sequence"), loc)))
adamc@754 895 | DView (tn, x, n, _, c) =>
adamc@754 896 let
adamc@754 897 val ct = (CModProj (n, [], "sql_view"), loc)
adamc@754 898 val ct = (CApp (ct, c), loc)
adamc@754 899 in
adamc@754 900 bind (ctx, NamedE (x, ct))
adamc@754 901 end
adamc@792 902 | DClass (x, n, k, c) =>
adamc@792 903 bind (ctx, NamedC (x, n, (KArrow (k, (KType, loc)), loc), SOME c))
adamc@459 904 | DDatabase _ => ctx
adamc@459 905 | DCookie (tn, x, n, c) =>
adamc@459 906 bind (ctx, NamedE (x, (CApp ((CModProj (n, [], "cookie"), loc),
adamc@718 907 c), loc)))
adamc@720 908 | DStyle (tn, x, n) =>
adamc@1073 909 bind (ctx, NamedE (x, (CModProj (n, [], "css_class"), loc)))
adamc@1199 910 | DTask _ => ctx
adam@1294 911 | DPolicy _ => ctx
adam@1294 912 | DOnError _ => ctx,
adamc@76 913 mfd ctx d)) ctx ds,
adamc@76 914 fn ds' => (StrConst ds', loc))
adamc@76 915 | StrVar _ => S.return2 strAll
adamc@76 916 | StrProj (str, x) =>
adamc@76 917 S.map2 (mfst ctx str,
adamc@76 918 fn str' =>
adamc@76 919 (StrProj (str', x), loc))
adamc@76 920 | StrFun (x, n, sgn1, sgn2, str) =>
adamc@76 921 S.bind2 (mfsg ctx sgn1,
adamc@76 922 fn sgn1' =>
adamc@76 923 S.bind2 (mfsg ctx sgn2,
adamc@76 924 fn sgn2' =>
adamc@76 925 S.map2 (mfst ctx str,
adamc@76 926 fn str' =>
adamc@76 927 (StrFun (x, n, sgn1', sgn2', str'), loc))))
adamc@76 928 | StrApp (str1, str2) =>
adamc@76 929 S.bind2 (mfst ctx str1,
adamc@76 930 fn str1' =>
adamc@76 931 S.map2 (mfst ctx str2,
adamc@76 932 fn str2' =>
adamc@76 933 (StrApp (str1', str2'), loc)))
adamc@76 934 | StrError => S.return2 strAll
adamc@76 935
adamc@76 936 and mfd ctx d acc =
adamc@76 937 S.bindP (mfd' ctx d acc, fd ctx)
adamc@76 938
adamc@76 939 and mfd' ctx (dAll as (d, loc)) =
adamc@76 940 case d of
adamc@76 941 DCon (x, n, k, c) =>
adamc@623 942 S.bind2 (mfk ctx k,
adamc@76 943 fn k' =>
adamc@76 944 S.map2 (mfc ctx c,
adamc@76 945 fn c' =>
adamc@76 946 (DCon (x, n, k', c'), loc)))
adamc@805 947 | DDatatype dts =>
adamc@805 948 S.map2 (ListUtil.mapfold (fn (x, n, xs, xncs) =>
adamc@805 949 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@805 950 case c of
adamc@805 951 NONE => S.return2 (x, n, c)
adamc@805 952 | SOME c =>
adamc@805 953 S.map2 (mfc ctx c,
adamc@805 954 fn c' => (x, n, SOME c'))) xncs,
adamc@805 955 fn xncs' =>
adamc@805 956 (x, n, xs, xncs'))) dts,
adamc@805 957 fn dts' =>
adamc@805 958 (DDatatype dts', loc))
adamc@191 959 | DDatatypeImp (x, n, m1, ms, s, xs, xncs) =>
adamc@162 960 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@162 961 case c of
adamc@162 962 NONE => S.return2 (x, n, c)
adamc@162 963 | SOME c =>
adamc@162 964 S.map2 (mfc ctx c,
adamc@162 965 fn c' => (x, n, SOME c'))) xncs,
adamc@162 966 fn xncs' =>
adamc@191 967 (DDatatypeImp (x, n, m1, ms, s, xs, xncs'), loc))
adamc@123 968 | DVal vi =>
adamc@123 969 S.map2 (mfvi ctx vi,
adamc@123 970 fn vi' =>
adamc@123 971 (DVal vi', loc))
adamc@123 972 | DValRec vis =>
adamc@123 973 S.map2 (ListUtil.mapfold (mfvi ctx) vis,
adamc@123 974 fn vis' =>
adamc@123 975 (DValRec vis', loc))
adamc@76 976 | DSgn (x, n, sgn) =>
adamc@76 977 S.map2 (mfsg ctx sgn,
adamc@76 978 fn sgn' =>
adamc@76 979 (DSgn (x, n, sgn'), loc))
adamc@76 980 | DStr (x, n, sgn, str) =>
adamc@76 981 S.bind2 (mfsg ctx sgn,
adamc@76 982 fn sgn' =>
adamc@76 983 S.map2 (mfst ctx str,
adamc@76 984 fn str' =>
adamc@76 985 (DStr (x, n, sgn', str'), loc)))
adamc@76 986 | DFfiStr (x, n, sgn) =>
adamc@76 987 S.map2 (mfsg ctx sgn,
adamc@76 988 fn sgn' =>
adamc@76 989 (DFfiStr (x, n, sgn'), loc))
adamc@88 990 | DConstraint (c1, c2) =>
adamc@88 991 S.bind2 (mfc ctx c1,
adamc@88 992 fn c1' =>
adamc@88 993 S.map2 (mfc ctx c2,
adamc@88 994 fn c2' =>
adamc@88 995 (DConstraint (c1', c2'), loc)))
adamc@109 996 | DExport (en, sgn, str) =>
adamc@109 997 S.bind2 (mfsg ctx sgn,
adamc@109 998 fn sgn' =>
adamc@109 999 S.map2 (mfst ctx str,
adamc@109 1000 fn str' =>
adamc@109 1001 (DExport (en, sgn', str'), loc)))
adamc@123 1002
adamc@707 1003 | DTable (tn, x, n, c, pe, pc, ce, cc) =>
adamc@704 1004 S.bind2 (mfc ctx c,
adamc@203 1005 fn c' =>
adamc@707 1006 S.bind2 (mfe ctx pe,
adamc@707 1007 fn pe' =>
adamc@707 1008 S.bind2 (mfc ctx pc,
adamc@707 1009 fn pc' =>
adamc@707 1010 S.bind2 (mfe ctx ce,
adamc@707 1011 fn ce' =>
adamc@707 1012 S.map2 (mfc ctx cc,
adamc@707 1013 fn cc' =>
adamc@707 1014 (DTable (tn, x, n, c', pe', pc', ce', cc'), loc))))))
adamc@338 1015 | DSequence _ => S.return2 dAll
adamc@754 1016 | DView (tn, x, n, e, c) =>
adamc@754 1017 S.bind2 (mfe ctx e,
adamc@754 1018 fn e' =>
adamc@754 1019 S.map2 (mfc ctx c,
adamc@754 1020 fn c' =>
adamc@754 1021 (DView (tn, x, n, e', c'), loc)))
adamc@203 1022
adamc@563 1023 | DClass (x, n, k, c) =>
adamc@623 1024 S.bind2 (mfk ctx k,
adamc@563 1025 fn k' =>
adamc@563 1026 S.map2 (mfc ctx c,
adamc@563 1027 fn c' =>
adamc@563 1028 (DClass (x, n, k', c'), loc)))
adamc@213 1029
adamc@338 1030 | DDatabase _ => S.return2 dAll
adamc@271 1031
adamc@459 1032 | DCookie (tn, x, n, c) =>
adamc@459 1033 S.map2 (mfc ctx c,
adamc@459 1034 fn c' =>
adamc@459 1035 (DCookie (tn, x, n, c'), loc))
adamc@720 1036 | DStyle _ => S.return2 dAll
adamc@1075 1037 | DTask (e1, e2) =>
adamc@1075 1038 S.bind2 (mfe ctx e1,
adamc@1075 1039 fn e1' =>
adamc@1075 1040 S.map2 (mfe ctx e2,
adamc@1075 1041 fn e2' =>
adamc@1075 1042 (DTask (e1', e2'), loc)))
adamc@1199 1043 | DPolicy e1 =>
adamc@1199 1044 S.map2 (mfe ctx e1,
adamc@1199 1045 fn e1' =>
adamc@1199 1046 (DPolicy e1', loc))
adam@1294 1047 | DOnError _ => S.return2 dAll
adamc@459 1048
adamc@123 1049 and mfvi ctx (x, n, c, e) =
adamc@123 1050 S.bind2 (mfc ctx c,
adamc@123 1051 fn c' =>
adamc@123 1052 S.map2 (mfe ctx e,
adamc@123 1053 fn e' =>
adamc@123 1054 (x, n, c', e')))
adamc@76 1055 in
adamc@76 1056 mfd
adamc@76 1057 end
adamc@76 1058
adamc@76 1059 fun mapfold {kind, con, exp, sgn_item, sgn, str, decl} =
adamc@623 1060 mapfoldB {kind = fn () => kind,
adamc@76 1061 con = fn () => con,
adamc@76 1062 exp = fn () => exp,
adamc@76 1063 sgn_item = fn () => sgn_item,
adamc@76 1064 sgn = fn () => sgn,
adamc@76 1065 str = fn () => str,
adamc@76 1066 decl = fn () => decl,
adamc@76 1067 bind = fn ((), _) => ()} ()
adamc@76 1068
adamc@76 1069 fun exists {kind, con, exp, sgn_item, sgn, str, decl} k =
adamc@76 1070 case mapfold {kind = fn k => fn () =>
adamc@76 1071 if kind k then
adamc@76 1072 S.Return ()
adamc@76 1073 else
adamc@76 1074 S.Continue (k, ()),
adamc@76 1075 con = fn c => fn () =>
adamc@76 1076 if con c then
adamc@76 1077 S.Return ()
adamc@76 1078 else
adamc@76 1079 S.Continue (c, ()),
adamc@76 1080 exp = fn e => fn () =>
adamc@76 1081 if exp e then
adamc@76 1082 S.Return ()
adamc@76 1083 else
adamc@76 1084 S.Continue (e, ()),
adamc@76 1085 sgn_item = fn sgi => fn () =>
adamc@76 1086 if sgn_item sgi then
adamc@76 1087 S.Return ()
adamc@76 1088 else
adamc@76 1089 S.Continue (sgi, ()),
adamc@76 1090 sgn = fn x => fn () =>
adamc@76 1091 if sgn x then
adamc@76 1092 S.Return ()
adamc@76 1093 else
adamc@76 1094 S.Continue (x, ()),
adamc@76 1095 str = fn x => fn () =>
adamc@76 1096 if str x then
adamc@76 1097 S.Return ()
adamc@76 1098 else
adamc@76 1099 S.Continue (x, ()),
adamc@76 1100 decl = fn x => fn () =>
adamc@76 1101 if decl x then
adamc@76 1102 S.Return ()
adamc@76 1103 else
adamc@76 1104 S.Continue (x, ())} k () of
adamc@76 1105 S.Return _ => true
adamc@76 1106 | S.Continue _ => false
adamc@76 1107
adamc@76 1108 fun search {kind, con, exp, sgn_item, sgn, str, decl} k =
adamc@76 1109 case mapfold {kind = fn x => fn () =>
adamc@76 1110 case kind x of
adamc@76 1111 NONE => S.Continue (x, ())
adamc@76 1112 | SOME v => S.Return v,
adamc@76 1113
adamc@76 1114 con = fn x => fn () =>
adamc@76 1115 case con x of
adamc@76 1116 NONE => S.Continue (x, ())
adamc@76 1117 | SOME v => S.Return v,
adamc@76 1118
adamc@76 1119 exp = fn x => fn () =>
adamc@76 1120 case exp x of
adamc@76 1121 NONE => S.Continue (x, ())
adamc@76 1122 | SOME v => S.Return v,
adamc@76 1123
adamc@76 1124 sgn_item = fn x => fn () =>
adamc@76 1125 case sgn_item x of
adamc@76 1126 NONE => S.Continue (x, ())
adamc@76 1127 | SOME v => S.Return v,
adamc@76 1128
adamc@76 1129 sgn = fn x => fn () =>
adamc@76 1130 case sgn x of
adamc@76 1131 NONE => S.Continue (x, ())
adamc@76 1132 | SOME v => S.Return v,
adamc@76 1133
adamc@76 1134 str = fn x => fn () =>
adamc@76 1135 case str x of
adamc@76 1136 NONE => S.Continue (x, ())
adamc@76 1137 | SOME v => S.Return v,
adamc@76 1138
adamc@76 1139 decl = fn x => fn () =>
adamc@76 1140 case decl x of
adamc@76 1141 NONE => S.Continue (x, ())
adamc@76 1142 | SOME v => S.Return v
adamc@76 1143
adamc@76 1144 } k () of
adamc@76 1145 S.Return x => SOME x
adamc@76 1146 | S.Continue _ => NONE
adamc@76 1147
adamc@448 1148 fun foldMapB {kind, con, exp, sgn_item, sgn, str, decl, bind} ctx st d =
adamc@623 1149 case mapfoldB {kind = fn ctx => fn x => fn st => S.Continue (kind (ctx, x, st)),
adamc@448 1150 con = fn ctx => fn x => fn st => S.Continue (con (ctx, x, st)),
adamc@448 1151 exp = fn ctx => fn x => fn st => S.Continue (exp (ctx, x, st)),
adamc@448 1152 sgn_item = fn ctx => fn x => fn st => S.Continue (sgn_item (ctx, x, st)),
adamc@448 1153 sgn = fn ctx => fn x => fn st => S.Continue (sgn (ctx, x, st)),
adamc@448 1154 str = fn ctx => fn x => fn st => S.Continue (str (ctx, x, st)),
adamc@448 1155 decl = fn ctx => fn x => fn st => S.Continue (decl (ctx, x, st)),
adamc@448 1156 bind = bind} ctx d st of
adamc@448 1157 S.Continue x => x
adamc@448 1158 | S.Return _ => raise Fail "ElabUtil.Decl.foldMapB: Impossible"
adamc@448 1159
adam@1345 1160 fun map {kind, con, exp, sgn_item, sgn, str, decl} s =
adam@1345 1161 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adam@1345 1162 con = fn c => fn () => S.Continue (con c, ()),
adam@1345 1163 exp = fn e => fn () => S.Continue (exp e, ()),
adam@1345 1164 sgn_item = fn si => fn () => S.Continue (sgn_item si, ()),
adam@1345 1165 sgn = fn s => fn () => S.Continue (sgn s, ()),
adam@1345 1166 str = fn si => fn () => S.Continue (str si, ()),
adam@1345 1167 decl = fn s => fn () => S.Continue (decl s, ())} s () of
adam@1345 1168 S.Return () => raise Fail "Elab_util.Decl.map"
adam@1345 1169 | S.Continue (s, ()) => s
adam@1345 1170
adam@1345 1171 fun mapB {kind, con, exp, sgn_item, sgn, str, decl, bind} ctx s =
adam@1345 1172 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adam@1345 1173 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adam@1345 1174 exp = fn ctx => fn c => fn () => S.Continue (exp ctx c, ()),
adam@1345 1175 sgn_item = fn ctx => fn sgi => fn () => S.Continue (sgn_item ctx sgi, ()),
adam@1345 1176 sgn = fn ctx => fn s => fn () => S.Continue (sgn ctx s, ()),
adam@1345 1177 str = fn ctx => fn sgi => fn () => S.Continue (str ctx sgi, ()),
adam@1345 1178 decl = fn ctx => fn s => fn () => S.Continue (decl ctx s, ()),
adam@1345 1179 bind = bind} ctx s () of
adam@1345 1180 S.Continue (s, ()) => s
adam@1345 1181 | S.Return _ => raise Fail "ElabUtil.Decl.mapB: Impossible"
adam@1345 1182
adamc@448 1183 end
adamc@448 1184
adamc@448 1185 structure File = struct
adamc@448 1186
adamc@448 1187 fun maxName ds = foldl (fn (d, count) => Int.max (maxNameDecl d, count)) 0 ds
adamc@448 1188
adamc@448 1189 and maxNameDecl (d, _) =
adamc@448 1190 case d of
adamc@448 1191 DCon (_, n, _, _) => n
adamc@805 1192 | DDatatype dts =>
adamc@805 1193 foldl (fn ((_, n, _, ns), max) =>
adamc@448 1194 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@805 1195 (Int.max (n, max)) ns) 0 dts
adamc@448 1196 | DDatatypeImp (_, n1, n2, _, _, _, ns) =>
adamc@448 1197 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@448 1198 (Int.max (n1, n2)) ns
adamc@448 1199 | DVal (_, n, _, _) => n
adamc@448 1200 | DValRec vis => foldl (fn ((_, n, _, _), count) => Int.max (n, count)) 0 vis
adamc@448 1201 | DStr (_, n, sgn, str) => Int.max (n, Int.max (maxNameSgn sgn, maxNameStr str))
adamc@448 1202 | DSgn (_, n, sgn) => Int.max (n, maxNameSgn sgn)
adamc@448 1203 | DFfiStr (_, n, sgn) => Int.max (n, maxNameSgn sgn)
adamc@448 1204 | DConstraint _ => 0
adamc@563 1205 | DClass (_, n, _, _) => n
adamc@448 1206 | DExport _ => 0
adamc@707 1207 | DTable (n1, _, n2, _, _, _, _, _) => Int.max (n1, n2)
adamc@459 1208 | DSequence (n1, _, n2) => Int.max (n1, n2)
adamc@754 1209 | DView (n1, _, n2, _, _) => Int.max (n1, n2)
adamc@448 1210 | DDatabase _ => 0
adamc@459 1211 | DCookie (n1, _, n2, _) => Int.max (n1, n2)
adamc@720 1212 | DStyle (n1, _, n2) => Int.max (n1, n2)
adamc@1075 1213 | DTask _ => 0
adamc@1199 1214 | DPolicy _ => 0
adam@1294 1215 | DOnError _ => 0
adamc@448 1216 and maxNameStr (str, _) =
adamc@448 1217 case str of
adamc@448 1218 StrConst ds => maxName ds
adamc@448 1219 | StrVar n => n
adamc@448 1220 | StrProj (str, _) => maxNameStr str
adamc@448 1221 | StrFun (_, n, dom, ran, str) => foldl Int.max n [maxNameSgn dom, maxNameSgn ran, maxNameStr str]
adamc@448 1222 | StrApp (str1, str2) => Int.max (maxNameStr str1, maxNameStr str2)
adamc@448 1223 | StrError => 0
adamc@448 1224
adamc@448 1225 and maxNameSgn (sgn, _) =
adamc@448 1226 case sgn of
adamc@448 1227 SgnConst sgis => foldl (fn (sgi, count) => Int.max (maxNameSgi sgi, count)) 0 sgis
adamc@448 1228 | SgnVar n => n
adamc@448 1229 | SgnFun (_, n, dom, ran) => Int.max (n, Int.max (maxNameSgn dom, maxNameSgn ran))
adamc@448 1230 | SgnWhere (sgn, _, _) => maxNameSgn sgn
adamc@448 1231 | SgnProj (n, _, _) => n
adamc@448 1232 | SgnError => 0
adamc@448 1233
adamc@448 1234 and maxNameSgi (sgi, _) =
adamc@448 1235 case sgi of
adamc@448 1236 SgiConAbs (_, n, _) => n
adamc@448 1237 | SgiCon (_, n, _, _) => n
adamc@805 1238 | SgiDatatype dts =>
adamc@805 1239 foldl (fn ((_, n, _, ns), max) =>
adamc@805 1240 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@805 1241 (Int.max (n, max)) ns) 0 dts
adamc@448 1242 | SgiDatatypeImp (_, n1, n2, _, _, _, ns) =>
adamc@448 1243 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@448 1244 (Int.max (n1, n2)) ns
adamc@448 1245 | SgiVal (_, n, _) => n
adamc@448 1246 | SgiStr (_, n, sgn) => Int.max (n, maxNameSgn sgn)
adamc@448 1247 | SgiSgn (_, n, sgn) => Int.max (n, maxNameSgn sgn)
adamc@448 1248 | SgiConstraint _ => 0
adamc@563 1249 | SgiClassAbs (_, n, _) => n
adamc@563 1250 | SgiClass (_, n, _, _) => n
adam@1584 1251
adam@1584 1252 fun findDecl pred file =
adam@1584 1253 let
adam@1584 1254 fun decl d =
adam@1584 1255 let
adam@1584 1256 val r = case #1 d of
adam@1584 1257 DStr (_, _, _, s) => str s
adam@1584 1258 | _ => NONE
adam@1584 1259 in
adam@1584 1260 case r of
adam@1584 1261 NONE => if pred d then SOME d else NONE
adam@1584 1262 | _ => r
adam@1584 1263 end
adam@1584 1264
adam@1584 1265 and str s =
adam@1584 1266 case #1 s of
adam@1584 1267 StrConst ds => ListUtil.search decl ds
adam@1584 1268 | StrFun (_, _, _, _, s) => str s
adam@1584 1269 | StrApp (s1, s2) =>
adam@1584 1270 (case str s1 of
adam@1584 1271 NONE => str s2
adam@1584 1272 | r => r)
adam@1584 1273 | _ => NONE
adam@1584 1274 in
adam@1584 1275 ListUtil.search decl file
adam@1584 1276 end
adamc@448 1277
adamc@34 1278 end
adamc@76 1279
adamc@76 1280 end