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annotate src/elab_util.sml @ 1584:c37d8341940a

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Shorter, more focused error messages about undetermined unification variables
author Adam Chlipala <adam@chlipala.net>
date Sat, 29 Oct 2011 17:30:34 -0400
parents 9e0fa4f6ac93
children 6c00d8af6239
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
adamc@623 78 | KUnif (_, _, ref (SOME k)) => mfk' ctx k
adamc@2 79 | KUnif _ => S.return2 kAll
adamc@623 80
adam@1302 81 | KTupleUnif (_, _, ref (SOME 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@1303 220 | CUnif (nl, _, _, _, ref (SOME 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
adamc@711 259 fun existsB {kind, con, bind} ctx c =
adamc@711 260 case mapfoldB {kind = fn ctx => fn k => fn () =>
adamc@711 261 if kind (ctx, k) then
adamc@711 262 S.Return ()
adamc@711 263 else
adamc@711 264 S.Continue (k, ()),
adamc@711 265 con = fn ctx => fn c => fn () =>
adamc@711 266 if con (ctx, c) then
adamc@711 267 S.Return ()
adamc@711 268 else
adamc@711 269 S.Continue (c, ()),
adamc@711 270 bind = bind} ctx c () of
adamc@711 271 S.Return _ => true
adamc@711 272 | S.Continue _ => false
adamc@711 273
adamc@711 274 fun exists {kind, con} c =
adamc@6 275 case mapfold {kind = fn k => fn () =>
adamc@6 276 if kind k then
adamc@6 277 S.Return ()
adamc@6 278 else
adamc@6 279 S.Continue (k, ()),
adamc@6 280 con = fn c => fn () =>
adamc@6 281 if con c then
adamc@6 282 S.Return ()
adamc@6 283 else
adamc@711 284 S.Continue (c, ())} c () of
adamc@2 285 S.Return _ => true
adamc@2 286 | S.Continue _ => false
adamc@2 287
adamc@448 288 fun foldB {kind, con, bind} ctx st c =
adamc@623 289 case mapfoldB {kind = fn ctx => fn k => fn st => S.Continue (k, kind (ctx, k, st)),
adamc@448 290 con = fn ctx => fn c => fn st => S.Continue (c, con (ctx, c, st)),
adamc@448 291 bind = bind} ctx c st of
adamc@448 292 S.Continue (_, st) => st
adamc@448 293 | S.Return _ => raise Fail "ElabUtil.Con.foldB: Impossible"
adamc@448 294
adamc@839 295 fun fold {kind, con} st c =
adamc@839 296 case mapfoldB {kind = fn () => fn k => fn st => S.Continue (k, kind (k, st)),
adamc@839 297 con = fn () => fn c => fn st => S.Continue (c, con (c, st)),
adamc@839 298 bind = fn ((), _) => ()} () c st of
adamc@839 299 S.Continue (_, st) => st
adamc@839 300 | S.Return _ => raise Fail "ElabUtil.Con.fold: Impossible"
adamc@839 301
adamc@2 302 end
adamc@2 303
adamc@10 304 structure Exp = struct
adamc@10 305
adamc@11 306 datatype binder =
adamc@623 307 RelK of string
adamc@623 308 | RelC of string * Elab.kind
adamc@792 309 | NamedC of string * int * Elab.kind * Elab.con option
adamc@11 310 | RelE of string * Elab.con
adamc@11 311 | NamedE of string * Elab.con
adamc@11 312
adamc@11 313 fun mapfoldB {kind = fk, con = fc, exp = fe, bind} =
adamc@10 314 let
adamc@623 315 val mfk = Kind.mapfoldB {kind = fk, bind = fn (ctx, x) => bind (ctx, RelK x)}
adamc@10 316
adamc@11 317 fun bind' (ctx, b) =
adamc@11 318 let
adamc@11 319 val b' = case b of
adamc@623 320 Con.RelK x => RelK x
adamc@623 321 | Con.RelC x => RelC x
adamc@623 322 | Con.NamedC x => NamedC x
adamc@11 323 in
adamc@11 324 bind (ctx, b')
adamc@11 325 end
adamc@11 326 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@10 327
adamc@825 328 fun doVars ((p, _), ctx) =
adamc@825 329 case p of
adamc@825 330 PWild => ctx
adamc@825 331 | PVar xt => bind (ctx, RelE xt)
adamc@825 332 | PPrim _ => ctx
adamc@825 333 | PCon (_, _, _, NONE) => ctx
adamc@825 334 | PCon (_, _, _, SOME p) => doVars (p, ctx)
adamc@825 335 | PRecord xpcs =>
adamc@825 336 foldl (fn ((_, p, _), ctx) => doVars (p, ctx))
adamc@825 337 ctx xpcs
adamc@825 338
adamc@11 339 fun mfe ctx e acc =
adamc@11 340 S.bindP (mfe' ctx e acc, fe ctx)
adamc@11 341
adamc@11 342 and mfe' ctx (eAll as (e, loc)) =
adamc@10 343 case e of
adamc@14 344 EPrim _ => S.return2 eAll
adamc@14 345 | ERel _ => S.return2 eAll
adamc@10 346 | ENamed _ => S.return2 eAll
adamc@34 347 | EModProj _ => S.return2 eAll
adamc@10 348 | EApp (e1, e2) =>
adamc@11 349 S.bind2 (mfe ctx e1,
adamc@10 350 fn e1' =>
adamc@11 351 S.map2 (mfe ctx e2,
adamc@10 352 fn e2' =>
adamc@10 353 (EApp (e1', e2'), loc)))
adamc@26 354 | EAbs (x, dom, ran, e) =>
adamc@26 355 S.bind2 (mfc ctx dom,
adamc@26 356 fn dom' =>
adamc@26 357 S.bind2 (mfc ctx ran,
adamc@26 358 fn ran' =>
adamc@26 359 S.map2 (mfe (bind (ctx, RelE (x, dom'))) e,
adamc@26 360 fn e' =>
adamc@26 361 (EAbs (x, dom', ran', e'), loc))))
adamc@26 362
adamc@10 363 | ECApp (e, c) =>
adamc@11 364 S.bind2 (mfe ctx e,
adamc@10 365 fn e' =>
adamc@11 366 S.map2 (mfc ctx c,
adamc@10 367 fn c' =>
adamc@10 368 (ECApp (e', c'), loc)))
adamc@10 369 | ECAbs (expl, x, k, e) =>
adamc@623 370 S.bind2 (mfk ctx k,
adamc@10 371 fn k' =>
adamc@11 372 S.map2 (mfe (bind (ctx, RelC (x, k))) e,
adamc@10 373 fn e' =>
adamc@10 374 (ECAbs (expl, x, k', e'), loc)))
adamc@10 375
adamc@12 376 | ERecord xes =>
adamc@29 377 S.map2 (ListUtil.mapfold (fn (x, e, t) =>
adamc@12 378 S.bind2 (mfc ctx x,
adamc@12 379 fn x' =>
adamc@29 380 S.bind2 (mfe ctx e,
adamc@12 381 fn e' =>
adamc@29 382 S.map2 (mfc ctx t,
adamc@29 383 fn t' =>
adamc@29 384 (x', e', t')))))
adamc@12 385 xes,
adamc@12 386 fn xes' =>
adamc@12 387 (ERecord xes', loc))
adamc@12 388 | EField (e, c, {field, rest}) =>
adamc@12 389 S.bind2 (mfe ctx e,
adamc@12 390 fn e' =>
adamc@12 391 S.bind2 (mfc ctx c,
adamc@12 392 fn c' =>
adamc@12 393 S.bind2 (mfc ctx field,
adamc@12 394 fn field' =>
adamc@12 395 S.map2 (mfc ctx rest,
adamc@12 396 fn rest' =>
adamc@12 397 (EField (e', c', {field = field', rest = rest'}), loc)))))
adamc@445 398 | EConcat (e1, c1, e2, c2) =>
adamc@339 399 S.bind2 (mfe ctx e1,
adamc@339 400 fn e1' =>
adamc@445 401 S.bind2 (mfc ctx c1,
adamc@445 402 fn c1' =>
adamc@339 403 S.bind2 (mfe ctx e2,
adamc@339 404 fn e2' =>
adamc@445 405 S.map2 (mfc ctx c2,
adamc@445 406 fn c2' =>
adamc@445 407 (EConcat (e1', c1', e2', c2'),
adamc@445 408 loc)))))
adamc@149 409 | ECut (e, c, {field, rest}) =>
adamc@149 410 S.bind2 (mfe ctx e,
adamc@149 411 fn e' =>
adamc@149 412 S.bind2 (mfc ctx c,
adamc@149 413 fn c' =>
adamc@149 414 S.bind2 (mfc ctx field,
adamc@149 415 fn field' =>
adamc@149 416 S.map2 (mfc ctx rest,
adamc@149 417 fn rest' =>
adamc@149 418 (ECut (e', c', {field = field', rest = rest'}), loc)))))
adamc@12 419
adamc@493 420 | ECutMulti (e, c, {rest}) =>
adamc@493 421 S.bind2 (mfe ctx e,
adamc@493 422 fn e' =>
adamc@493 423 S.bind2 (mfc ctx c,
adamc@493 424 fn c' =>
adamc@493 425 S.map2 (mfc ctx rest,
adamc@493 426 fn rest' =>
adamc@493 427 (ECutMulti (e', c', {rest = rest'}), loc))))
adamc@493 428
adamc@182 429 | ECase (e, pes, {disc, result}) =>
adamc@171 430 S.bind2 (mfe ctx e,
adamc@171 431 fn e' =>
adamc@171 432 S.bind2 (ListUtil.mapfold (fn (p, e) =>
adamc@448 433 let
adamc@448 434 fun pb ((p, _), ctx) =
adamc@448 435 case p of
adamc@448 436 PWild => ctx
adamc@448 437 | PVar (x, t) => bind (ctx, RelE (x, t))
adamc@448 438 | PPrim _ => ctx
adamc@448 439 | PCon (_, _, _, NONE) => ctx
adamc@448 440 | PCon (_, _, _, SOME p) => pb (p, ctx)
adamc@448 441 | PRecord xps => foldl (fn ((_, p, _), ctx) =>
adamc@448 442 pb (p, ctx)) ctx xps
adamc@448 443 in
adamc@1272 444 S.bind2 (mfp ctx p,
adamc@1272 445 fn p' =>
adamc@1272 446 S.map2 (mfe (pb (p', ctx)) e,
adamc@1272 447 fn e' => (p', e')))
adamc@448 448 end) pes,
adamc@171 449 fn pes' =>
adamc@182 450 S.bind2 (mfc ctx disc,
adamc@182 451 fn disc' =>
adamc@182 452 S.map2 (mfc ctx result,
adamc@182 453 fn result' =>
adamc@182 454 (ECase (e', pes', {disc = disc', result = result'}), loc)))))
adamc@171 455
adamc@10 456 | EError => S.return2 eAll
adamc@228 457 | EUnif (ref (SOME e)) => mfe ctx e
adamc@228 458 | EUnif _ => S.return2 eAll
adamc@447 459
adamc@825 460 | ELet (des, e, t) =>
adamc@447 461 let
adamc@826 462 val (des, ctx') = foldl (fn (ed, (des, ctx)) =>
adamc@826 463 let
adamc@826 464 val ctx' =
adamc@826 465 case #1 ed of
adamc@826 466 EDVal (p, _, _) => doVars (p, ctx)
adamc@826 467 | EDValRec vis =>
adamc@826 468 foldl (fn ((x, t, _), ctx) => bind (ctx, RelE (x, t)))
adamc@826 469 ctx vis
adamc@826 470 in
adamc@826 471 (S.bind2 (des,
adamc@826 472 fn des' =>
adamc@826 473 S.map2 (mfed ctx ed,
adamc@826 474 fn ed' => ed' :: des')),
adamc@826 475 ctx')
adamc@826 476 end)
adamc@447 477 (S.return2 [], ctx) des
adamc@447 478 in
adamc@447 479 S.bind2 (des,
adamc@447 480 fn des' =>
adamc@826 481 S.bind2 (mfe ctx' e,
adamc@447 482 fn e' =>
adamc@825 483 S.map2 (mfc ctx t,
adamc@825 484 fn t' =>
adamc@826 485 (ELet (rev des', e', t'), loc))))
adamc@447 486 end
adamc@447 487
adamc@623 488 | EKAbs (x, e) =>
adamc@623 489 S.map2 (mfe (bind (ctx, RelK x)) e,
adamc@623 490 fn e' =>
adamc@623 491 (EKAbs (x, e'), loc))
adamc@623 492 | EKApp (e, k) =>
adamc@623 493 S.bind2 (mfe ctx e,
adamc@623 494 fn e' =>
adamc@623 495 S.map2 (mfk ctx k,
adamc@623 496 fn k' =>
adamc@623 497 (EKApp (e', k'), loc)))
adamc@623 498
adamc@1272 499 and mfp ctx (pAll as (p, loc)) =
adamc@1272 500 case p of
adamc@1272 501 PWild => S.return2 pAll
adamc@1272 502 | PVar (x, t) =>
adamc@1272 503 S.map2 (mfc ctx t,
adamc@1272 504 fn t' =>
adamc@1272 505 (PVar (x, t'), loc))
adamc@1272 506 | PPrim _ => S.return2 pAll
adamc@1272 507 | PCon (dk, pc, args, po) =>
adamc@1272 508 S.bind2 (ListUtil.mapfold (mfc ctx) args,
adamc@1272 509 fn args' =>
adamc@1272 510 S.map2 ((case po of
adamc@1272 511 NONE => S.return2 NONE
adamc@1272 512 | SOME p => S.map2 (mfp ctx p, SOME)),
adamc@1272 513 fn po' =>
adamc@1272 514 (PCon (dk, pc, args', po'), loc)))
adamc@1272 515 | PRecord xps =>
adamc@1272 516 S.map2 (ListUtil.mapfold (fn (x, p, c) =>
adamc@1272 517 S.bind2 (mfp ctx p,
adamc@1272 518 fn p' =>
adamc@1272 519 S.map2 (mfc ctx c,
adamc@1272 520 fn c' =>
adamc@1272 521 (x, p', c')))) xps,
adamc@1272 522 fn xps' =>
adamc@1272 523 (PRecord xps', loc))
adamc@1272 524
adamc@447 525 and mfed ctx (dAll as (d, loc)) =
adamc@447 526 case d of
adamc@825 527 EDVal (p, t, e) =>
adamc@825 528 S.bind2 (mfc ctx t,
adamc@825 529 fn t' =>
adamc@826 530 S.map2 (mfe ctx e,
adamc@825 531 fn e' =>
adamc@825 532 (EDVal (p, t', e'), loc)))
adamc@447 533 | EDValRec vis =>
adamc@447 534 let
adamc@453 535 val ctx = foldl (fn ((x, t, _), ctx) => bind (ctx, RelE (x, t))) ctx vis
adamc@447 536 in
adamc@447 537 S.map2 (ListUtil.mapfold (mfvi ctx) vis,
adamc@447 538 fn vis' =>
adamc@447 539 (EDValRec vis', loc))
adamc@447 540 end
adamc@447 541
adamc@447 542 and mfvi ctx (x, c, e) =
adamc@447 543 S.bind2 (mfc ctx c,
adamc@447 544 fn c' =>
adamc@447 545 S.map2 (mfe ctx e,
adamc@447 546 fn e' =>
adamc@447 547 (x, c', e')))
adamc@10 548 in
adamc@10 549 mfe
adamc@10 550 end
adamc@10 551
adamc@11 552 fun mapfold {kind = fk, con = fc, exp = fe} =
adamc@623 553 mapfoldB {kind = fn () => fk,
adamc@11 554 con = fn () => fc,
adamc@11 555 exp = fn () => fe,
adamc@11 556 bind = fn ((), _) => ()} ()
adamc@11 557
adamc@10 558 fun exists {kind, con, exp} k =
adamc@10 559 case mapfold {kind = fn k => fn () =>
adamc@10 560 if kind k then
adamc@10 561 S.Return ()
adamc@10 562 else
adamc@10 563 S.Continue (k, ()),
adamc@10 564 con = fn c => fn () =>
adamc@10 565 if con c then
adamc@10 566 S.Return ()
adamc@10 567 else
adamc@10 568 S.Continue (c, ()),
adamc@10 569 exp = fn e => fn () =>
adamc@10 570 if exp e then
adamc@10 571 S.Return ()
adamc@10 572 else
adamc@10 573 S.Continue (e, ())} k () of
adamc@10 574 S.Return _ => true
adamc@10 575 | S.Continue _ => false
adamc@10 576
adamc@211 577 fun mapB {kind, con, exp, bind} ctx e =
adamc@623 578 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adamc@211 579 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@211 580 exp = fn ctx => fn e => fn () => S.Continue (exp ctx e, ()),
adamc@211 581 bind = bind} ctx e () of
adamc@211 582 S.Continue (e, ()) => e
adamc@211 583 | S.Return _ => raise Fail "ElabUtil.Exp.mapB: Impossible"
adamc@211 584
adamc@448 585 fun foldB {kind, con, exp, bind} ctx st e =
adamc@623 586 case mapfoldB {kind = fn ctx => fn k => fn st => S.Continue (k, kind (ctx, k, st)),
adamc@448 587 con = fn ctx => fn c => fn st => S.Continue (c, con (ctx, c, st)),
adamc@448 588 exp = fn ctx => fn e => fn st => S.Continue (e, exp (ctx, e, st)),
adamc@448 589 bind = bind} ctx e st of
adamc@448 590 S.Continue (_, st) => st
adamc@448 591 | S.Return _ => raise Fail "ElabUtil.Exp.foldB: Impossible"
adamc@448 592
adamc@10 593 end
adamc@10 594
adamc@34 595 structure Sgn = struct
adamc@34 596
adamc@34 597 datatype binder =
adamc@623 598 RelK of string
adamc@623 599 | RelC of string * Elab.kind
adamc@792 600 | NamedC of string * int * Elab.kind * Elab.con option
adamc@792 601 | Str of string * int * Elab.sgn
adamc@792 602 | Sgn of string * int * Elab.sgn
adamc@34 603
adamc@34 604 fun mapfoldB {kind, con, sgn_item, sgn, bind} =
adamc@34 605 let
adamc@34 606 fun bind' (ctx, b) =
adamc@34 607 let
adamc@34 608 val b' = case b of
adamc@623 609 Con.RelK x => RelK x
adamc@623 610 | Con.RelC x => RelC x
adamc@623 611 | Con.NamedC x => NamedC x
adamc@34 612 in
adamc@34 613 bind (ctx, b')
adamc@34 614 end
adamc@34 615 val con = Con.mapfoldB {kind = kind, con = con, bind = bind'}
adamc@34 616
adamc@623 617 val kind = Kind.mapfoldB {kind = kind, bind = fn (ctx, x) => bind (ctx, RelK x)}
adamc@34 618
adamc@34 619 fun sgi ctx si acc =
adamc@34 620 S.bindP (sgi' ctx si acc, sgn_item ctx)
adamc@34 621
adamc@156 622 and sgi' ctx (siAll as (si, loc)) =
adamc@34 623 case si of
adamc@34 624 SgiConAbs (x, n, k) =>
adamc@623 625 S.map2 (kind ctx k,
adamc@34 626 fn k' =>
adamc@34 627 (SgiConAbs (x, n, k'), loc))
adamc@34 628 | SgiCon (x, n, k, c) =>
adamc@623 629 S.bind2 (kind ctx k,
adamc@34 630 fn k' =>
adamc@34 631 S.map2 (con ctx c,
adamc@34 632 fn c' =>
adamc@34 633 (SgiCon (x, n, k', c'), loc)))
adamc@805 634 | SgiDatatype dts =>
adamc@805 635 S.map2 (ListUtil.mapfold (fn (x, n, xs, xncs) =>
adamc@805 636 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@805 637 case c of
adamc@805 638 NONE => S.return2 (x, n, c)
adamc@805 639 | SOME c =>
adamc@805 640 S.map2 (con ctx c,
adamc@805 641 fn c' => (x, n, SOME c'))) xncs,
adamc@805 642 fn xncs' => (x, n, xs, xncs'))) dts,
adamc@805 643 fn dts' =>
adamc@805 644 (SgiDatatype dts', loc))
adamc@191 645 | SgiDatatypeImp (x, n, m1, ms, s, xs, xncs) =>
adamc@162 646 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@162 647 case c of
adamc@162 648 NONE => S.return2 (x, n, c)
adamc@162 649 | SOME c =>
adamc@162 650 S.map2 (con ctx c,
adamc@162 651 fn c' => (x, n, SOME c'))) xncs,
adamc@162 652 fn xncs' =>
adamc@191 653 (SgiDatatypeImp (x, n, m1, ms, s, xs, xncs'), loc))
adamc@34 654 | SgiVal (x, n, c) =>
adamc@34 655 S.map2 (con ctx c,
adamc@34 656 fn c' =>
adamc@34 657 (SgiVal (x, n, c'), loc))
adamc@34 658 | SgiStr (x, n, s) =>
adamc@34 659 S.map2 (sg ctx s,
adamc@34 660 fn s' =>
adamc@34 661 (SgiStr (x, n, s'), loc))
adamc@59 662 | SgiSgn (x, n, s) =>
adamc@59 663 S.map2 (sg ctx s,
adamc@59 664 fn s' =>
adamc@59 665 (SgiSgn (x, n, s'), loc))
adamc@88 666 | SgiConstraint (c1, c2) =>
adamc@88 667 S.bind2 (con ctx c1,
adamc@88 668 fn c1' =>
adamc@88 669 S.map2 (con ctx c2,
adamc@88 670 fn c2' =>
adamc@88 671 (SgiConstraint (c1', c2'), loc)))
adamc@563 672 | SgiClassAbs (x, n, k) =>
adamc@623 673 S.map2 (kind ctx k,
adamc@563 674 fn k' =>
adamc@563 675 (SgiClassAbs (x, n, k'), loc))
adamc@563 676 | SgiClass (x, n, k, c) =>
adamc@623 677 S.bind2 (kind ctx k,
adamc@563 678 fn k' =>
adamc@563 679 S.map2 (con ctx c,
adamc@563 680 fn c' =>
adamc@563 681 (SgiClass (x, n, k', c'), loc)))
adamc@34 682
adamc@34 683 and sg ctx s acc =
adamc@34 684 S.bindP (sg' ctx s acc, sgn ctx)
adamc@34 685
adamc@34 686 and sg' ctx (sAll as (s, loc)) =
adamc@34 687 case s of
adamc@34 688 SgnConst sgis =>
adamc@34 689 S.map2 (ListUtil.mapfoldB (fn (ctx, si) =>
adamc@34 690 (case #1 si of
adamc@329 691 SgiConAbs (x, n, k) =>
adamc@792 692 bind (ctx, NamedC (x, n, k, NONE))
adamc@792 693 | SgiCon (x, n, k, c) =>
adamc@792 694 bind (ctx, NamedC (x, n, k, SOME c))
adamc@805 695 | SgiDatatype dts =>
adamc@805 696 foldl (fn ((x, n, ks, _), ctx) =>
adamc@805 697 let
adamc@805 698 val k' = (KType, loc)
adamc@805 699 val k = foldl (fn (_, k) => (KArrow (k', k), loc))
adamc@805 700 k' ks
adamc@805 701 in
adamc@805 702 bind (ctx, NamedC (x, n, k, NONE))
adamc@805 703 end) ctx dts
adamc@792 704 | SgiDatatypeImp (x, n, m1, ms, s, _, _) =>
adamc@792 705 bind (ctx, NamedC (x, n, (KType, loc),
adamc@792 706 SOME (CModProj (m1, ms, s), loc)))
adamc@34 707 | SgiVal _ => ctx
adamc@792 708 | SgiStr (x, n, sgn) =>
adamc@792 709 bind (ctx, Str (x, n, sgn))
adamc@792 710 | SgiSgn (x, n, sgn) =>
adamc@792 711 bind (ctx, Sgn (x, n, sgn))
adamc@203 712 | SgiConstraint _ => ctx
adamc@563 713 | SgiClassAbs (x, n, k) =>
adamc@792 714 bind (ctx, NamedC (x, n, (KArrow (k, (KType, loc)), loc), NONE))
adamc@792 715 | SgiClass (x, n, k, c) =>
adamc@792 716 bind (ctx, NamedC (x, n, (KArrow (k, (KType, loc)), loc), SOME c)),
adamc@34 717 sgi ctx si)) ctx sgis,
adamc@34 718 fn sgis' =>
adamc@34 719 (SgnConst sgis', loc))
adamc@34 720
adamc@34 721 | SgnVar _ => S.return2 sAll
adamc@41 722 | SgnFun (m, n, s1, s2) =>
adamc@41 723 S.bind2 (sg ctx s1,
adamc@41 724 fn s1' =>
adamc@792 725 S.map2 (sg (bind (ctx, Str (m, n, s1'))) s2,
adamc@41 726 fn s2' =>
adamc@41 727 (SgnFun (m, n, s1', s2'), loc)))
adamc@59 728 | SgnProj _ => S.return2 sAll
adamc@42 729 | SgnWhere (sgn, x, c) =>
adamc@42 730 S.bind2 (sg ctx sgn,
adamc@42 731 fn sgn' =>
adamc@42 732 S.map2 (con ctx c,
adamc@42 733 fn c' =>
adamc@42 734 (SgnWhere (sgn', x, c'), loc)))
adamc@34 735 | SgnError => S.return2 sAll
adamc@34 736 in
adamc@34 737 sg
adamc@34 738 end
adamc@34 739
adamc@34 740 fun mapfold {kind, con, sgn_item, sgn} =
adamc@623 741 mapfoldB {kind = fn () => kind,
adamc@34 742 con = fn () => con,
adamc@34 743 sgn_item = fn () => sgn_item,
adamc@34 744 sgn = fn () => sgn,
adamc@34 745 bind = fn ((), _) => ()} ()
adamc@34 746
adamc@792 747 fun mapB {kind, con, sgn_item, sgn, bind} ctx s =
adamc@792 748 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adamc@792 749 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@792 750 sgn_item = fn ctx => fn sgi => fn () => S.Continue (sgn_item ctx sgi, ()),
adamc@792 751 sgn = fn ctx => fn s => fn () => S.Continue (sgn ctx s, ()),
adamc@792 752 bind = bind} ctx s () of
adamc@792 753 S.Continue (s, ()) => s
adamc@792 754 | S.Return _ => raise Fail "ElabUtil.Sgn.mapB: Impossible"
adamc@792 755
adamc@34 756 fun map {kind, con, sgn_item, sgn} s =
adamc@34 757 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@34 758 con = fn c => fn () => S.Continue (con c, ()),
adamc@34 759 sgn_item = fn si => fn () => S.Continue (sgn_item si, ()),
adamc@34 760 sgn = fn s => fn () => S.Continue (sgn s, ())} s () of
adamc@34 761 S.Return () => raise Fail "Elab_util.Sgn.map"
adamc@34 762 | S.Continue (s, ()) => s
adamc@34 763
adamc@2 764 end
adamc@34 765
adamc@76 766 structure Decl = struct
adamc@76 767
adamc@76 768 datatype binder =
adamc@623 769 RelK of string
adamc@623 770 | RelC of string * Elab.kind
adamc@792 771 | NamedC of string * int * Elab.kind * Elab.con option
adamc@76 772 | RelE of string * Elab.con
adamc@76 773 | NamedE of string * Elab.con
adam@1345 774 | Str of string * int * Elab.sgn
adam@1345 775 | Sgn of string * int * Elab.sgn
adamc@76 776
adamc@76 777 fun mapfoldB {kind = fk, con = fc, exp = fe, sgn_item = fsgi, sgn = fsg, str = fst, decl = fd, bind} =
adamc@76 778 let
adamc@623 779 val mfk = Kind.mapfoldB {kind = fk, bind = fn (ctx, x) => bind (ctx, RelK x)}
adamc@76 780
adamc@76 781 fun bind' (ctx, b) =
adamc@76 782 let
adamc@76 783 val b' = case b of
adamc@623 784 Con.RelK x => RelK x
adamc@623 785 | Con.RelC x => RelC x
adamc@623 786 | Con.NamedC x => NamedC x
adamc@76 787 in
adamc@76 788 bind (ctx, b')
adamc@76 789 end
adamc@76 790 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@76 791
adamc@76 792 fun bind' (ctx, b) =
adamc@76 793 let
adamc@76 794 val b' = case b of
adamc@623 795 Exp.RelK x => RelK x
adamc@623 796 | Exp.RelC x => RelC x
adamc@76 797 | Exp.NamedC x => NamedC x
adamc@76 798 | Exp.RelE x => RelE x
adamc@76 799 | Exp.NamedE x => NamedE x
adamc@76 800 in
adamc@76 801 bind (ctx, b')
adamc@76 802 end
adamc@76 803 val mfe = Exp.mapfoldB {kind = fk, con = fc, exp = fe, 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 Sgn.RelK x => RelK x
adamc@623 809 | Sgn.RelC x => RelC x
adamc@76 810 | Sgn.NamedC x => NamedC x
adam@1345 811 | Sgn.Sgn x => Sgn x
adam@1345 812 | Sgn.Str x => Str x
adamc@76 813 in
adamc@76 814 bind (ctx, b')
adamc@76 815 end
adamc@76 816 val mfsg = Sgn.mapfoldB {kind = fk, con = fc, sgn_item = fsgi, sgn = fsg, bind = bind'}
adamc@76 817
adamc@76 818 fun mfst ctx str acc =
adamc@76 819 S.bindP (mfst' ctx str acc, fst ctx)
adamc@76 820
adamc@76 821 and mfst' ctx (strAll as (str, loc)) =
adamc@76 822 case str of
adamc@76 823 StrConst ds =>
adamc@76 824 S.map2 (ListUtil.mapfoldB (fn (ctx, d) =>
adamc@76 825 (case #1 d of
adamc@792 826 DCon (x, n, k, c) =>
adamc@792 827 bind (ctx, NamedC (x, n, k, SOME c))
adamc@805 828 | DDatatype dts =>
adamc@156 829 let
adamc@805 830 fun doOne ((x, n, xs, xncs), ctx) =
adamc@805 831 let
adamc@805 832 val ctx = bind (ctx, NamedC (x, n, (KType, loc), NONE))
adamc@805 833 in
adamc@805 834 foldl (fn ((x, _, co), ctx) =>
adamc@805 835 let
adamc@805 836 val t =
adamc@805 837 case co of
adamc@805 838 NONE => CNamed n
adamc@805 839 | SOME t => TFun (t, (CNamed n, loc))
adamc@805 840
adamc@805 841 val k = (KType, loc)
adamc@805 842 val t = (t, loc)
adamc@805 843 val t = foldr (fn (x, t) =>
adamc@805 844 (TCFun (Explicit,
adamc@805 845 x,
adamc@805 846 k,
adamc@805 847 t), loc))
adamc@805 848 t xs
adamc@805 849 in
adamc@805 850 bind (ctx, NamedE (x, t))
adamc@805 851 end)
adamc@805 852 ctx xncs
adamc@805 853 end
adamc@156 854 in
adamc@805 855 foldl doOne ctx dts
adamc@156 856 end
adamc@191 857 | DDatatypeImp (x, n, m, ms, x', _, _) =>
adamc@792 858 bind (ctx, NamedC (x, n, (KType, loc),
adamc@792 859 SOME (CModProj (m, ms, x'), loc)))
adamc@76 860 | DVal (x, _, c, _) =>
adamc@76 861 bind (ctx, NamedE (x, c))
adamc@123 862 | DValRec vis =>
adamc@123 863 foldl (fn ((x, _, c, _), ctx) => bind (ctx, NamedE (x, c))) ctx vis
adam@1345 864 | DSgn (x, n, sgn) =>
adam@1345 865 bind (ctx, Sgn (x, n, sgn))
adam@1345 866 | DStr (x, n, sgn, _) =>
adam@1345 867 bind (ctx, Str (x, n, sgn))
adam@1345 868 | DFfiStr (x, n, sgn) =>
adam@1345 869 bind (ctx, Str (x, n, sgn))
adamc@100 870 | DConstraint _ => ctx
adamc@203 871 | DExport _ => ctx
adamc@707 872 | DTable (tn, x, n, c, _, pc, _, cc) =>
adamc@705 873 let
adamc@705 874 val ct = (CModProj (n, [], "sql_table"), loc)
adamc@705 875 val ct = (CApp (ct, c), loc)
adamc@707 876 val ct = (CApp (ct, (CConcat (pc, cc), loc)), loc)
adamc@705 877 in
adamc@705 878 bind (ctx, NamedE (x, ct))
adamc@705 879 end
adamc@338 880 | DSequence (tn, x, n) =>
adamc@338 881 bind (ctx, NamedE (x, (CModProj (n, [], "sql_sequence"), loc)))
adamc@754 882 | DView (tn, x, n, _, c) =>
adamc@754 883 let
adamc@754 884 val ct = (CModProj (n, [], "sql_view"), loc)
adamc@754 885 val ct = (CApp (ct, c), loc)
adamc@754 886 in
adamc@754 887 bind (ctx, NamedE (x, ct))
adamc@754 888 end
adamc@792 889 | DClass (x, n, k, c) =>
adamc@792 890 bind (ctx, NamedC (x, n, (KArrow (k, (KType, loc)), loc), SOME c))
adamc@459 891 | DDatabase _ => ctx
adamc@459 892 | DCookie (tn, x, n, c) =>
adamc@459 893 bind (ctx, NamedE (x, (CApp ((CModProj (n, [], "cookie"), loc),
adamc@718 894 c), loc)))
adamc@720 895 | DStyle (tn, x, n) =>
adamc@1073 896 bind (ctx, NamedE (x, (CModProj (n, [], "css_class"), loc)))
adamc@1199 897 | DTask _ => ctx
adam@1294 898 | DPolicy _ => ctx
adam@1294 899 | DOnError _ => ctx,
adamc@76 900 mfd ctx d)) ctx ds,
adamc@76 901 fn ds' => (StrConst ds', loc))
adamc@76 902 | StrVar _ => S.return2 strAll
adamc@76 903 | StrProj (str, x) =>
adamc@76 904 S.map2 (mfst ctx str,
adamc@76 905 fn str' =>
adamc@76 906 (StrProj (str', x), loc))
adamc@76 907 | StrFun (x, n, sgn1, sgn2, str) =>
adamc@76 908 S.bind2 (mfsg ctx sgn1,
adamc@76 909 fn sgn1' =>
adamc@76 910 S.bind2 (mfsg ctx sgn2,
adamc@76 911 fn sgn2' =>
adamc@76 912 S.map2 (mfst ctx str,
adamc@76 913 fn str' =>
adamc@76 914 (StrFun (x, n, sgn1', sgn2', str'), loc))))
adamc@76 915 | StrApp (str1, str2) =>
adamc@76 916 S.bind2 (mfst ctx str1,
adamc@76 917 fn str1' =>
adamc@76 918 S.map2 (mfst ctx str2,
adamc@76 919 fn str2' =>
adamc@76 920 (StrApp (str1', str2'), loc)))
adamc@76 921 | StrError => S.return2 strAll
adamc@76 922
adamc@76 923 and mfd ctx d acc =
adamc@76 924 S.bindP (mfd' ctx d acc, fd ctx)
adamc@76 925
adamc@76 926 and mfd' ctx (dAll as (d, loc)) =
adamc@76 927 case d of
adamc@76 928 DCon (x, n, k, c) =>
adamc@623 929 S.bind2 (mfk ctx k,
adamc@76 930 fn k' =>
adamc@76 931 S.map2 (mfc ctx c,
adamc@76 932 fn c' =>
adamc@76 933 (DCon (x, n, k', c'), loc)))
adamc@805 934 | DDatatype dts =>
adamc@805 935 S.map2 (ListUtil.mapfold (fn (x, n, xs, xncs) =>
adamc@805 936 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@805 937 case c of
adamc@805 938 NONE => S.return2 (x, n, c)
adamc@805 939 | SOME c =>
adamc@805 940 S.map2 (mfc ctx c,
adamc@805 941 fn c' => (x, n, SOME c'))) xncs,
adamc@805 942 fn xncs' =>
adamc@805 943 (x, n, xs, xncs'))) dts,
adamc@805 944 fn dts' =>
adamc@805 945 (DDatatype dts', loc))
adamc@191 946 | DDatatypeImp (x, n, m1, ms, s, xs, xncs) =>
adamc@162 947 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@162 948 case c of
adamc@162 949 NONE => S.return2 (x, n, c)
adamc@162 950 | SOME c =>
adamc@162 951 S.map2 (mfc ctx c,
adamc@162 952 fn c' => (x, n, SOME c'))) xncs,
adamc@162 953 fn xncs' =>
adamc@191 954 (DDatatypeImp (x, n, m1, ms, s, xs, xncs'), loc))
adamc@123 955 | DVal vi =>
adamc@123 956 S.map2 (mfvi ctx vi,
adamc@123 957 fn vi' =>
adamc@123 958 (DVal vi', loc))
adamc@123 959 | DValRec vis =>
adamc@123 960 S.map2 (ListUtil.mapfold (mfvi ctx) vis,
adamc@123 961 fn vis' =>
adamc@123 962 (DValRec vis', loc))
adamc@76 963 | DSgn (x, n, sgn) =>
adamc@76 964 S.map2 (mfsg ctx sgn,
adamc@76 965 fn sgn' =>
adamc@76 966 (DSgn (x, n, sgn'), loc))
adamc@76 967 | DStr (x, n, sgn, str) =>
adamc@76 968 S.bind2 (mfsg ctx sgn,
adamc@76 969 fn sgn' =>
adamc@76 970 S.map2 (mfst ctx str,
adamc@76 971 fn str' =>
adamc@76 972 (DStr (x, n, sgn', str'), loc)))
adamc@76 973 | DFfiStr (x, n, sgn) =>
adamc@76 974 S.map2 (mfsg ctx sgn,
adamc@76 975 fn sgn' =>
adamc@76 976 (DFfiStr (x, n, sgn'), loc))
adamc@88 977 | DConstraint (c1, c2) =>
adamc@88 978 S.bind2 (mfc ctx c1,
adamc@88 979 fn c1' =>
adamc@88 980 S.map2 (mfc ctx c2,
adamc@88 981 fn c2' =>
adamc@88 982 (DConstraint (c1', c2'), loc)))
adamc@109 983 | DExport (en, sgn, str) =>
adamc@109 984 S.bind2 (mfsg ctx sgn,
adamc@109 985 fn sgn' =>
adamc@109 986 S.map2 (mfst ctx str,
adamc@109 987 fn str' =>
adamc@109 988 (DExport (en, sgn', str'), loc)))
adamc@123 989
adamc@707 990 | DTable (tn, x, n, c, pe, pc, ce, cc) =>
adamc@704 991 S.bind2 (mfc ctx c,
adamc@203 992 fn c' =>
adamc@707 993 S.bind2 (mfe ctx pe,
adamc@707 994 fn pe' =>
adamc@707 995 S.bind2 (mfc ctx pc,
adamc@707 996 fn pc' =>
adamc@707 997 S.bind2 (mfe ctx ce,
adamc@707 998 fn ce' =>
adamc@707 999 S.map2 (mfc ctx cc,
adamc@707 1000 fn cc' =>
adamc@707 1001 (DTable (tn, x, n, c', pe', pc', ce', cc'), loc))))))
adamc@338 1002 | DSequence _ => S.return2 dAll
adamc@754 1003 | DView (tn, x, n, e, c) =>
adamc@754 1004 S.bind2 (mfe ctx e,
adamc@754 1005 fn e' =>
adamc@754 1006 S.map2 (mfc ctx c,
adamc@754 1007 fn c' =>
adamc@754 1008 (DView (tn, x, n, e', c'), loc)))
adamc@203 1009
adamc@563 1010 | DClass (x, n, k, c) =>
adamc@623 1011 S.bind2 (mfk ctx k,
adamc@563 1012 fn k' =>
adamc@563 1013 S.map2 (mfc ctx c,
adamc@563 1014 fn c' =>
adamc@563 1015 (DClass (x, n, k', c'), loc)))
adamc@213 1016
adamc@338 1017 | DDatabase _ => S.return2 dAll
adamc@271 1018
adamc@459 1019 | DCookie (tn, x, n, c) =>
adamc@459 1020 S.map2 (mfc ctx c,
adamc@459 1021 fn c' =>
adamc@459 1022 (DCookie (tn, x, n, c'), loc))
adamc@720 1023 | DStyle _ => S.return2 dAll
adamc@1075 1024 | DTask (e1, e2) =>
adamc@1075 1025 S.bind2 (mfe ctx e1,
adamc@1075 1026 fn e1' =>
adamc@1075 1027 S.map2 (mfe ctx e2,
adamc@1075 1028 fn e2' =>
adamc@1075 1029 (DTask (e1', e2'), loc)))
adamc@1199 1030 | DPolicy e1 =>
adamc@1199 1031 S.map2 (mfe ctx e1,
adamc@1199 1032 fn e1' =>
adamc@1199 1033 (DPolicy e1', loc))
adam@1294 1034 | DOnError _ => S.return2 dAll
adamc@459 1035
adamc@123 1036 and mfvi ctx (x, n, c, e) =
adamc@123 1037 S.bind2 (mfc ctx c,
adamc@123 1038 fn c' =>
adamc@123 1039 S.map2 (mfe ctx e,
adamc@123 1040 fn e' =>
adamc@123 1041 (x, n, c', e')))
adamc@76 1042 in
adamc@76 1043 mfd
adamc@76 1044 end
adamc@76 1045
adamc@76 1046 fun mapfold {kind, con, exp, sgn_item, sgn, str, decl} =
adamc@623 1047 mapfoldB {kind = fn () => kind,
adamc@76 1048 con = fn () => con,
adamc@76 1049 exp = fn () => exp,
adamc@76 1050 sgn_item = fn () => sgn_item,
adamc@76 1051 sgn = fn () => sgn,
adamc@76 1052 str = fn () => str,
adamc@76 1053 decl = fn () => decl,
adamc@76 1054 bind = fn ((), _) => ()} ()
adamc@76 1055
adamc@76 1056 fun exists {kind, con, exp, sgn_item, sgn, str, decl} k =
adamc@76 1057 case mapfold {kind = fn k => fn () =>
adamc@76 1058 if kind k then
adamc@76 1059 S.Return ()
adamc@76 1060 else
adamc@76 1061 S.Continue (k, ()),
adamc@76 1062 con = fn c => fn () =>
adamc@76 1063 if con c then
adamc@76 1064 S.Return ()
adamc@76 1065 else
adamc@76 1066 S.Continue (c, ()),
adamc@76 1067 exp = fn e => fn () =>
adamc@76 1068 if exp e then
adamc@76 1069 S.Return ()
adamc@76 1070 else
adamc@76 1071 S.Continue (e, ()),
adamc@76 1072 sgn_item = fn sgi => fn () =>
adamc@76 1073 if sgn_item sgi then
adamc@76 1074 S.Return ()
adamc@76 1075 else
adamc@76 1076 S.Continue (sgi, ()),
adamc@76 1077 sgn = fn x => fn () =>
adamc@76 1078 if sgn x then
adamc@76 1079 S.Return ()
adamc@76 1080 else
adamc@76 1081 S.Continue (x, ()),
adamc@76 1082 str = fn x => fn () =>
adamc@76 1083 if str x then
adamc@76 1084 S.Return ()
adamc@76 1085 else
adamc@76 1086 S.Continue (x, ()),
adamc@76 1087 decl = fn x => fn () =>
adamc@76 1088 if decl x then
adamc@76 1089 S.Return ()
adamc@76 1090 else
adamc@76 1091 S.Continue (x, ())} k () of
adamc@76 1092 S.Return _ => true
adamc@76 1093 | S.Continue _ => false
adamc@76 1094
adamc@76 1095 fun search {kind, con, exp, sgn_item, sgn, str, decl} k =
adamc@76 1096 case mapfold {kind = fn x => fn () =>
adamc@76 1097 case kind x of
adamc@76 1098 NONE => S.Continue (x, ())
adamc@76 1099 | SOME v => S.Return v,
adamc@76 1100
adamc@76 1101 con = fn x => fn () =>
adamc@76 1102 case con x of
adamc@76 1103 NONE => S.Continue (x, ())
adamc@76 1104 | SOME v => S.Return v,
adamc@76 1105
adamc@76 1106 exp = fn x => fn () =>
adamc@76 1107 case exp x of
adamc@76 1108 NONE => S.Continue (x, ())
adamc@76 1109 | SOME v => S.Return v,
adamc@76 1110
adamc@76 1111 sgn_item = fn x => fn () =>
adamc@76 1112 case sgn_item x of
adamc@76 1113 NONE => S.Continue (x, ())
adamc@76 1114 | SOME v => S.Return v,
adamc@76 1115
adamc@76 1116 sgn = fn x => fn () =>
adamc@76 1117 case sgn x of
adamc@76 1118 NONE => S.Continue (x, ())
adamc@76 1119 | SOME v => S.Return v,
adamc@76 1120
adamc@76 1121 str = fn x => fn () =>
adamc@76 1122 case str x of
adamc@76 1123 NONE => S.Continue (x, ())
adamc@76 1124 | SOME v => S.Return v,
adamc@76 1125
adamc@76 1126 decl = fn x => fn () =>
adamc@76 1127 case decl x of
adamc@76 1128 NONE => S.Continue (x, ())
adamc@76 1129 | SOME v => S.Return v
adamc@76 1130
adamc@76 1131 } k () of
adamc@76 1132 S.Return x => SOME x
adamc@76 1133 | S.Continue _ => NONE
adamc@76 1134
adamc@448 1135 fun foldMapB {kind, con, exp, sgn_item, sgn, str, decl, bind} ctx st d =
adamc@623 1136 case mapfoldB {kind = fn ctx => fn x => fn st => S.Continue (kind (ctx, x, st)),
adamc@448 1137 con = fn ctx => fn x => fn st => S.Continue (con (ctx, x, st)),
adamc@448 1138 exp = fn ctx => fn x => fn st => S.Continue (exp (ctx, x, st)),
adamc@448 1139 sgn_item = fn ctx => fn x => fn st => S.Continue (sgn_item (ctx, x, st)),
adamc@448 1140 sgn = fn ctx => fn x => fn st => S.Continue (sgn (ctx, x, st)),
adamc@448 1141 str = fn ctx => fn x => fn st => S.Continue (str (ctx, x, st)),
adamc@448 1142 decl = fn ctx => fn x => fn st => S.Continue (decl (ctx, x, st)),
adamc@448 1143 bind = bind} ctx d st of
adamc@448 1144 S.Continue x => x
adamc@448 1145 | S.Return _ => raise Fail "ElabUtil.Decl.foldMapB: Impossible"
adamc@448 1146
adam@1345 1147 fun map {kind, con, exp, sgn_item, sgn, str, decl} s =
adam@1345 1148 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adam@1345 1149 con = fn c => fn () => S.Continue (con c, ()),
adam@1345 1150 exp = fn e => fn () => S.Continue (exp e, ()),
adam@1345 1151 sgn_item = fn si => fn () => S.Continue (sgn_item si, ()),
adam@1345 1152 sgn = fn s => fn () => S.Continue (sgn s, ()),
adam@1345 1153 str = fn si => fn () => S.Continue (str si, ()),
adam@1345 1154 decl = fn s => fn () => S.Continue (decl s, ())} s () of
adam@1345 1155 S.Return () => raise Fail "Elab_util.Decl.map"
adam@1345 1156 | S.Continue (s, ()) => s
adam@1345 1157
adam@1345 1158 fun mapB {kind, con, exp, sgn_item, sgn, str, decl, bind} ctx s =
adam@1345 1159 case mapfoldB {kind = fn ctx => fn k => fn () => S.Continue (kind ctx k, ()),
adam@1345 1160 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adam@1345 1161 exp = fn ctx => fn c => fn () => S.Continue (exp ctx c, ()),
adam@1345 1162 sgn_item = fn ctx => fn sgi => fn () => S.Continue (sgn_item ctx sgi, ()),
adam@1345 1163 sgn = fn ctx => fn s => fn () => S.Continue (sgn ctx s, ()),
adam@1345 1164 str = fn ctx => fn sgi => fn () => S.Continue (str ctx sgi, ()),
adam@1345 1165 decl = fn ctx => fn s => fn () => S.Continue (decl ctx s, ()),
adam@1345 1166 bind = bind} ctx s () of
adam@1345 1167 S.Continue (s, ()) => s
adam@1345 1168 | S.Return _ => raise Fail "ElabUtil.Decl.mapB: Impossible"
adam@1345 1169
adamc@448 1170 end
adamc@448 1171
adamc@448 1172 structure File = struct
adamc@448 1173
adamc@448 1174 fun maxName ds = foldl (fn (d, count) => Int.max (maxNameDecl d, count)) 0 ds
adamc@448 1175
adamc@448 1176 and maxNameDecl (d, _) =
adamc@448 1177 case d of
adamc@448 1178 DCon (_, n, _, _) => n
adamc@805 1179 | DDatatype dts =>
adamc@805 1180 foldl (fn ((_, n, _, ns), max) =>
adamc@448 1181 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@805 1182 (Int.max (n, max)) ns) 0 dts
adamc@448 1183 | DDatatypeImp (_, n1, n2, _, _, _, ns) =>
adamc@448 1184 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@448 1185 (Int.max (n1, n2)) ns
adamc@448 1186 | DVal (_, n, _, _) => n
adamc@448 1187 | DValRec vis => foldl (fn ((_, n, _, _), count) => Int.max (n, count)) 0 vis
adamc@448 1188 | DStr (_, n, sgn, str) => Int.max (n, Int.max (maxNameSgn sgn, maxNameStr str))
adamc@448 1189 | DSgn (_, n, sgn) => Int.max (n, maxNameSgn sgn)
adamc@448 1190 | DFfiStr (_, n, sgn) => Int.max (n, maxNameSgn sgn)
adamc@448 1191 | DConstraint _ => 0
adamc@563 1192 | DClass (_, n, _, _) => n
adamc@448 1193 | DExport _ => 0
adamc@707 1194 | DTable (n1, _, n2, _, _, _, _, _) => Int.max (n1, n2)
adamc@459 1195 | DSequence (n1, _, n2) => Int.max (n1, n2)
adamc@754 1196 | DView (n1, _, n2, _, _) => Int.max (n1, n2)
adamc@448 1197 | DDatabase _ => 0
adamc@459 1198 | DCookie (n1, _, n2, _) => Int.max (n1, n2)
adamc@720 1199 | DStyle (n1, _, n2) => Int.max (n1, n2)
adamc@1075 1200 | DTask _ => 0
adamc@1199 1201 | DPolicy _ => 0
adam@1294 1202 | DOnError _ => 0
adamc@448 1203 and maxNameStr (str, _) =
adamc@448 1204 case str of
adamc@448 1205 StrConst ds => maxName ds
adamc@448 1206 | StrVar n => n
adamc@448 1207 | StrProj (str, _) => maxNameStr str
adamc@448 1208 | StrFun (_, n, dom, ran, str) => foldl Int.max n [maxNameSgn dom, maxNameSgn ran, maxNameStr str]
adamc@448 1209 | StrApp (str1, str2) => Int.max (maxNameStr str1, maxNameStr str2)
adamc@448 1210 | StrError => 0
adamc@448 1211
adamc@448 1212 and maxNameSgn (sgn, _) =
adamc@448 1213 case sgn of
adamc@448 1214 SgnConst sgis => foldl (fn (sgi, count) => Int.max (maxNameSgi sgi, count)) 0 sgis
adamc@448 1215 | SgnVar n => n
adamc@448 1216 | SgnFun (_, n, dom, ran) => Int.max (n, Int.max (maxNameSgn dom, maxNameSgn ran))
adamc@448 1217 | SgnWhere (sgn, _, _) => maxNameSgn sgn
adamc@448 1218 | SgnProj (n, _, _) => n
adamc@448 1219 | SgnError => 0
adamc@448 1220
adamc@448 1221 and maxNameSgi (sgi, _) =
adamc@448 1222 case sgi of
adamc@448 1223 SgiConAbs (_, n, _) => n
adamc@448 1224 | SgiCon (_, n, _, _) => n
adamc@805 1225 | SgiDatatype dts =>
adamc@805 1226 foldl (fn ((_, n, _, ns), max) =>
adamc@805 1227 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@805 1228 (Int.max (n, max)) ns) 0 dts
adamc@448 1229 | SgiDatatypeImp (_, n1, n2, _, _, _, ns) =>
adamc@448 1230 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@448 1231 (Int.max (n1, n2)) ns
adamc@448 1232 | SgiVal (_, n, _) => n
adamc@448 1233 | SgiStr (_, n, sgn) => Int.max (n, maxNameSgn sgn)
adamc@448 1234 | SgiSgn (_, n, sgn) => Int.max (n, maxNameSgn sgn)
adamc@448 1235 | SgiConstraint _ => 0
adamc@563 1236 | SgiClassAbs (_, n, _) => n
adamc@563 1237 | SgiClass (_, n, _, _) => n
adam@1584 1238
adam@1584 1239 fun findDecl pred file =
adam@1584 1240 let
adam@1584 1241 fun decl d =
adam@1584 1242 let
adam@1584 1243 val r = case #1 d of
adam@1584 1244 DStr (_, _, _, s) => str s
adam@1584 1245 | _ => NONE
adam@1584 1246 in
adam@1584 1247 case r of
adam@1584 1248 NONE => if pred d then SOME d else NONE
adam@1584 1249 | _ => r
adam@1584 1250 end
adam@1584 1251
adam@1584 1252 and str s =
adam@1584 1253 case #1 s of
adam@1584 1254 StrConst ds => ListUtil.search decl ds
adam@1584 1255 | StrFun (_, _, _, _, s) => str s
adam@1584 1256 | StrApp (s1, s2) =>
adam@1584 1257 (case str s1 of
adam@1584 1258 NONE => str s2
adam@1584 1259 | r => r)
adam@1584 1260 | _ => NONE
adam@1584 1261 in
adam@1584 1262 ListUtil.search decl file
adam@1584 1263 end
adamc@448 1264
adamc@34 1265 end
adamc@76 1266
adamc@76 1267 end