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annotate src/core_util.sml @ 186:88d46972de53

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bool in Basis
author Adam Chlipala <adamc@hcoop.net>
date Sun, 03 Aug 2008 18:53:20 -0400
parents d11754ffe252
children 8e9f97508f0d
rev   line source
adamc@16 1 (* Copyright (c) 2008, Adam Chlipala
adamc@16 2 * All rights reserved.
adamc@16 3 *
adamc@16 4 * Redistribution and use in source and binary forms, with or without
adamc@16 5 * modification, are permitted provided that the following conditions are met:
adamc@16 6 *
adamc@16 7 * - Redistributions of source code must retain the above copyright notice,
adamc@16 8 * this list of conditions and the following disclaimer.
adamc@16 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@16 10 * this list of conditions and the following disclaimer in the documentation
adamc@16 11 * and/or other materials provided with the distribution.
adamc@16 12 * - The names of contributors may not be used to endorse or promote products
adamc@16 13 * derived from this software without specific prior written permission.
adamc@16 14 *
adamc@16 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@16 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@16 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@16 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@16 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@16 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@16 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@16 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@16 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@16 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@16 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@16 26 *)
adamc@16 27
adamc@16 28 structure CoreUtil :> CORE_UTIL = struct
adamc@16 29
adamc@16 30 open Core
adamc@16 31
adamc@16 32 structure S = Search
adamc@16 33
adamc@16 34 structure Kind = struct
adamc@16 35
adamc@16 36 fun mapfold f =
adamc@16 37 let
adamc@16 38 fun mfk k acc =
adamc@16 39 S.bindP (mfk' k acc, f)
adamc@16 40
adamc@16 41 and mfk' (kAll as (k, loc)) =
adamc@16 42 case k of
adamc@16 43 KType => S.return2 kAll
adamc@16 44
adamc@16 45 | KArrow (k1, k2) =>
adamc@16 46 S.bind2 (mfk k1,
adamc@16 47 fn k1' =>
adamc@16 48 S.map2 (mfk k2,
adamc@16 49 fn k2' =>
adamc@16 50 (KArrow (k1', k2'), loc)))
adamc@16 51
adamc@16 52 | KName => S.return2 kAll
adamc@16 53
adamc@16 54 | KRecord k =>
adamc@16 55 S.map2 (mfk k,
adamc@16 56 fn k' =>
adamc@16 57 (KRecord k', loc))
adamc@87 58
adamc@87 59 | KUnit => S.return2 kAll
adamc@16 60 in
adamc@16 61 mfk
adamc@16 62 end
adamc@16 63
adamc@16 64 fun map f k =
adamc@16 65 case mapfold (fn k => fn () => S.Continue (f k, ())) k () of
adamc@16 66 S.Return () => raise Fail "Core_util.Kind.map"
adamc@16 67 | S.Continue (k, ()) => k
adamc@16 68
adamc@16 69 fun exists f k =
adamc@16 70 case mapfold (fn k => fn () =>
adamc@16 71 if f k then
adamc@16 72 S.Return ()
adamc@16 73 else
adamc@16 74 S.Continue (k, ())) k () of
adamc@16 75 S.Return _ => true
adamc@16 76 | S.Continue _ => false
adamc@16 77
adamc@16 78 end
adamc@16 79
adamc@16 80 structure Con = struct
adamc@16 81
adamc@16 82 datatype binder =
adamc@16 83 Rel of string * kind
adamc@20 84 | Named of string * int * kind * con option
adamc@16 85
adamc@16 86 fun mapfoldB {kind = fk, con = fc, bind} =
adamc@16 87 let
adamc@16 88 val mfk = Kind.mapfold fk
adamc@16 89
adamc@16 90 fun mfc ctx c acc =
adamc@16 91 S.bindP (mfc' ctx c acc, fc ctx)
adamc@16 92
adamc@16 93 and mfc' ctx (cAll as (c, loc)) =
adamc@16 94 case c of
adamc@16 95 TFun (c1, c2) =>
adamc@16 96 S.bind2 (mfc ctx c1,
adamc@16 97 fn c1' =>
adamc@16 98 S.map2 (mfc ctx c2,
adamc@16 99 fn c2' =>
adamc@16 100 (TFun (c1', c2'), loc)))
adamc@16 101 | TCFun (x, k, c) =>
adamc@16 102 S.bind2 (mfk k,
adamc@16 103 fn k' =>
adamc@16 104 S.map2 (mfc (bind (ctx, Rel (x, k))) c,
adamc@16 105 fn c' =>
adamc@16 106 (TCFun (x, k', c'), loc)))
adamc@16 107 | TRecord c =>
adamc@16 108 S.map2 (mfc ctx c,
adamc@16 109 fn c' =>
adamc@16 110 (TRecord c', loc))
adamc@16 111
adamc@16 112 | CRel _ => S.return2 cAll
adamc@16 113 | CNamed _ => S.return2 cAll
adamc@48 114 | CFfi _ => S.return2 cAll
adamc@16 115 | CApp (c1, c2) =>
adamc@16 116 S.bind2 (mfc ctx c1,
adamc@16 117 fn c1' =>
adamc@16 118 S.map2 (mfc ctx c2,
adamc@16 119 fn c2' =>
adamc@16 120 (CApp (c1', c2'), loc)))
adamc@16 121 | CAbs (x, k, c) =>
adamc@16 122 S.bind2 (mfk k,
adamc@16 123 fn k' =>
adamc@16 124 S.map2 (mfc (bind (ctx, Rel (x, k))) c,
adamc@16 125 fn c' =>
adamc@16 126 (CAbs (x, k', c'), loc)))
adamc@16 127
adamc@16 128 | CName _ => S.return2 cAll
adamc@16 129
adamc@16 130 | CRecord (k, xcs) =>
adamc@16 131 S.bind2 (mfk k,
adamc@16 132 fn k' =>
adamc@16 133 S.map2 (ListUtil.mapfold (fn (x, c) =>
adamc@16 134 S.bind2 (mfc ctx x,
adamc@16 135 fn x' =>
adamc@16 136 S.map2 (mfc ctx c,
adamc@16 137 fn c' =>
adamc@16 138 (x', c'))))
adamc@16 139 xcs,
adamc@16 140 fn xcs' =>
adamc@16 141 (CRecord (k', xcs'), loc)))
adamc@16 142 | CConcat (c1, c2) =>
adamc@16 143 S.bind2 (mfc ctx c1,
adamc@16 144 fn c1' =>
adamc@16 145 S.map2 (mfc ctx c2,
adamc@16 146 fn c2' =>
adamc@16 147 (CConcat (c1', c2'), loc)))
adamc@69 148 | CFold (k1, k2) =>
adamc@69 149 S.bind2 (mfk k1,
adamc@69 150 fn k1' =>
adamc@69 151 S.map2 (mfk k2,
adamc@69 152 fn k2' =>
adamc@69 153 (CFold (k1', k2'), loc)))
adamc@87 154
adamc@87 155 | CUnit => S.return2 cAll
adamc@16 156 in
adamc@16 157 mfc
adamc@16 158 end
adamc@16 159
adamc@16 160 fun mapfold {kind = fk, con = fc} =
adamc@16 161 mapfoldB {kind = fk,
adamc@16 162 con = fn () => fc,
adamc@16 163 bind = fn ((), _) => ()} ()
adamc@16 164
adamc@16 165 fun map {kind, con} c =
adamc@16 166 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@16 167 con = fn c => fn () => S.Continue (con c, ())} c () of
adamc@16 168 S.Return () => raise Fail "Core_util.Con.map"
adamc@16 169 | S.Continue (c, ()) => c
adamc@16 170
adamc@16 171 fun mapB {kind, con, bind} ctx c =
adamc@16 172 case mapfoldB {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@16 173 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@16 174 bind = bind} ctx c () of
adamc@16 175 S.Continue (c, ()) => c
adamc@20 176 | S.Return _ => raise Fail "CoreUtil.Con.mapB: Impossible"
adamc@16 177
adamc@23 178 fun fold {kind, con} s c =
adamc@23 179 case mapfold {kind = fn k => fn s => S.Continue (k, kind (k, s)),
adamc@23 180 con = fn c => fn s => S.Continue (c, con (c, s))} c s of
adamc@23 181 S.Continue (_, s) => s
adamc@23 182 | S.Return _ => raise Fail "CoreUtil.Con.fold: Impossible"
adamc@23 183
adamc@16 184 fun exists {kind, con} k =
adamc@16 185 case mapfold {kind = fn k => fn () =>
adamc@16 186 if kind k then
adamc@16 187 S.Return ()
adamc@16 188 else
adamc@16 189 S.Continue (k, ()),
adamc@16 190 con = fn c => fn () =>
adamc@16 191 if con c then
adamc@16 192 S.Return ()
adamc@16 193 else
adamc@16 194 S.Continue (c, ())} k () of
adamc@16 195 S.Return _ => true
adamc@16 196 | S.Continue _ => false
adamc@16 197
adamc@16 198 end
adamc@16 199
adamc@16 200 structure Exp = struct
adamc@16 201
adamc@16 202 datatype binder =
adamc@16 203 RelC of string * kind
adamc@20 204 | NamedC of string * int * kind * con option
adamc@16 205 | RelE of string * con
adamc@109 206 | NamedE of string * int * con * exp option * string
adamc@16 207
adamc@16 208 fun mapfoldB {kind = fk, con = fc, exp = fe, bind} =
adamc@16 209 let
adamc@16 210 val mfk = Kind.mapfold fk
adamc@16 211
adamc@16 212 fun bind' (ctx, b) =
adamc@16 213 let
adamc@16 214 val b' = case b of
adamc@16 215 Con.Rel x => RelC x
adamc@16 216 | Con.Named x => NamedC x
adamc@16 217 in
adamc@16 218 bind (ctx, b')
adamc@16 219 end
adamc@16 220 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@16 221
adamc@16 222 fun mfe ctx e acc =
adamc@16 223 S.bindP (mfe' ctx e acc, fe ctx)
adamc@16 224
adamc@16 225 and mfe' ctx (eAll as (e, loc)) =
adamc@16 226 case e of
adamc@16 227 EPrim _ => S.return2 eAll
adamc@16 228 | ERel _ => S.return2 eAll
adamc@16 229 | ENamed _ => S.return2 eAll
adamc@177 230 | ECon (_, NONE) => S.return2 eAll
adamc@177 231 | ECon (n, SOME e) =>
adamc@177 232 S.map2 (mfe ctx e,
adamc@177 233 fn e' =>
adamc@177 234 (ECon (n, SOME e'), loc))
adamc@48 235 | EFfi _ => S.return2 eAll
adamc@48 236 | EFfiApp (m, x, es) =>
adamc@48 237 S.map2 (ListUtil.mapfold (fn e => mfe ctx e) es,
adamc@48 238 fn es' =>
adamc@48 239 (EFfiApp (m, x, es'), loc))
adamc@16 240 | EApp (e1, e2) =>
adamc@16 241 S.bind2 (mfe ctx e1,
adamc@16 242 fn e1' =>
adamc@16 243 S.map2 (mfe ctx e2,
adamc@16 244 fn e2' =>
adamc@16 245 (EApp (e1', e2'), loc)))
adamc@26 246 | EAbs (x, dom, ran, e) =>
adamc@26 247 S.bind2 (mfc ctx dom,
adamc@26 248 fn dom' =>
adamc@26 249 S.bind2 (mfc ctx ran,
adamc@26 250 fn ran' =>
adamc@26 251 S.map2 (mfe (bind (ctx, RelE (x, dom'))) e,
adamc@26 252 fn e' =>
adamc@26 253 (EAbs (x, dom', ran', e'), loc))))
adamc@16 254
adamc@16 255 | ECApp (e, c) =>
adamc@16 256 S.bind2 (mfe ctx e,
adamc@16 257 fn e' =>
adamc@16 258 S.map2 (mfc ctx c,
adamc@16 259 fn c' =>
adamc@16 260 (ECApp (e', c'), loc)))
adamc@16 261 | ECAbs (x, k, e) =>
adamc@16 262 S.bind2 (mfk k,
adamc@16 263 fn k' =>
adamc@16 264 S.map2 (mfe (bind (ctx, RelC (x, k))) e,
adamc@16 265 fn e' =>
adamc@16 266 (ECAbs (x, k', e'), loc)))
adamc@16 267
adamc@16 268 | ERecord xes =>
adamc@29 269 S.map2 (ListUtil.mapfold (fn (x, e, t) =>
adamc@16 270 S.bind2 (mfc ctx x,
adamc@16 271 fn x' =>
adamc@29 272 S.bind2 (mfe ctx e,
adamc@29 273 fn e' =>
adamc@29 274 S.map2 (mfc ctx t,
adamc@29 275 fn t' =>
adamc@29 276 (x', e', t')))))
adamc@16 277 xes,
adamc@16 278 fn xes' =>
adamc@16 279 (ERecord xes', loc))
adamc@16 280 | EField (e, c, {field, rest}) =>
adamc@16 281 S.bind2 (mfe ctx e,
adamc@16 282 fn e' =>
adamc@16 283 S.bind2 (mfc ctx c,
adamc@16 284 fn c' =>
adamc@16 285 S.bind2 (mfc ctx field,
adamc@16 286 fn field' =>
adamc@16 287 S.map2 (mfc ctx rest,
adamc@16 288 fn rest' =>
adamc@16 289 (EField (e', c', {field = field', rest = rest'}), loc)))))
adamc@149 290 | ECut (e, c, {field, rest}) =>
adamc@149 291 S.bind2 (mfe ctx e,
adamc@149 292 fn e' =>
adamc@149 293 S.bind2 (mfc ctx c,
adamc@149 294 fn c' =>
adamc@149 295 S.bind2 (mfc ctx field,
adamc@149 296 fn field' =>
adamc@149 297 S.map2 (mfc ctx rest,
adamc@149 298 fn rest' =>
adamc@149 299 (ECut (e', c', {field = field', rest = rest'}), loc)))))
adamc@73 300 | EFold k =>
adamc@73 301 S.map2 (mfk k,
adamc@73 302 fn k' =>
adamc@73 303 (EFold k', loc))
adamc@102 304
adamc@182 305 | ECase (e, pes, {disc, result}) =>
adamc@177 306 S.bind2 (mfe ctx e,
adamc@177 307 fn e' =>
adamc@177 308 S.bind2 (ListUtil.mapfold (fn (p, e) =>
adamc@177 309 S.map2 (mfe ctx e,
adamc@177 310 fn e' => (p, e'))) pes,
adamc@177 311 fn pes' =>
adamc@182 312 S.bind2 (mfc ctx disc,
adamc@182 313 fn disc' =>
adamc@182 314 S.map2 (mfc ctx result,
adamc@182 315 fn result' =>
adamc@182 316 (ECase (e', pes', {disc = disc', result = result'}), loc)))))
adamc@177 317
adamc@102 318 | EWrite e =>
adamc@102 319 S.map2 (mfe ctx e,
adamc@102 320 fn e' =>
adamc@102 321 (EWrite e', loc))
adamc@110 322
adamc@110 323 | EClosure (n, es) =>
adamc@110 324 S.map2 (ListUtil.mapfold (mfe ctx) es,
adamc@110 325 fn es' =>
adamc@110 326 (EClosure (n, es'), loc))
adamc@16 327 in
adamc@16 328 mfe
adamc@16 329 end
adamc@16 330
adamc@16 331 fun mapfold {kind = fk, con = fc, exp = fe} =
adamc@16 332 mapfoldB {kind = fk,
adamc@16 333 con = fn () => fc,
adamc@16 334 exp = fn () => fe,
adamc@16 335 bind = fn ((), _) => ()} ()
adamc@16 336
adamc@21 337 fun mapB {kind, con, exp, bind} ctx e =
adamc@21 338 case mapfoldB {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@21 339 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@21 340 exp = fn ctx => fn e => fn () => S.Continue (exp ctx e, ()),
adamc@21 341 bind = bind} ctx e () of
adamc@21 342 S.Continue (e, ()) => e
adamc@21 343 | S.Return _ => raise Fail "CoreUtil.Exp.mapB: Impossible"
adamc@21 344
adamc@16 345 fun map {kind, con, exp} e =
adamc@16 346 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@16 347 con = fn c => fn () => S.Continue (con c, ()),
adamc@16 348 exp = fn e => fn () => S.Continue (exp e, ())} e () of
adamc@16 349 S.Return () => raise Fail "Core_util.Exp.map"
adamc@16 350 | S.Continue (e, ()) => e
adamc@16 351
adamc@23 352 fun fold {kind, con, exp} s e =
adamc@23 353 case mapfold {kind = fn k => fn s => S.Continue (k, kind (k, s)),
adamc@23 354 con = fn c => fn s => S.Continue (c, con (c, s)),
adamc@23 355 exp = fn e => fn s => S.Continue (e, exp (e, s))} e s of
adamc@23 356 S.Continue (_, s) => s
adamc@23 357 | S.Return _ => raise Fail "CoreUtil.Exp.fold: Impossible"
adamc@23 358
adamc@16 359 fun exists {kind, con, exp} k =
adamc@16 360 case mapfold {kind = fn k => fn () =>
adamc@16 361 if kind k then
adamc@16 362 S.Return ()
adamc@16 363 else
adamc@16 364 S.Continue (k, ()),
adamc@16 365 con = fn c => fn () =>
adamc@16 366 if con c then
adamc@16 367 S.Return ()
adamc@16 368 else
adamc@16 369 S.Continue (c, ()),
adamc@16 370 exp = fn e => fn () =>
adamc@16 371 if exp e then
adamc@16 372 S.Return ()
adamc@16 373 else
adamc@16 374 S.Continue (e, ())} k () of
adamc@16 375 S.Return _ => true
adamc@16 376 | S.Continue _ => false
adamc@16 377
adamc@16 378 end
adamc@16 379
adamc@20 380 structure Decl = struct
adamc@20 381
adamc@20 382 datatype binder = datatype Exp.binder
adamc@20 383
adamc@20 384 fun mapfoldB {kind = fk, con = fc, exp = fe, decl = fd, bind} =
adamc@20 385 let
adamc@20 386 val mfk = Kind.mapfold fk
adamc@20 387
adamc@20 388 fun bind' (ctx, b) =
adamc@20 389 let
adamc@20 390 val b' = case b of
adamc@20 391 Con.Rel x => RelC x
adamc@20 392 | Con.Named x => NamedC x
adamc@20 393 in
adamc@20 394 bind (ctx, b')
adamc@20 395 end
adamc@20 396 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@20 397
adamc@20 398 val mfe = Exp.mapfoldB {kind = fk, con = fc, exp = fe, bind = bind}
adamc@20 399
adamc@20 400 fun mfd ctx d acc =
adamc@20 401 S.bindP (mfd' ctx d acc, fd ctx)
adamc@20 402
adamc@20 403 and mfd' ctx (dAll as (d, loc)) =
adamc@20 404 case d of
adamc@20 405 DCon (x, n, k, c) =>
adamc@20 406 S.bind2 (mfk k,
adamc@20 407 fn k' =>
adamc@20 408 S.map2 (mfc ctx c,
adamc@20 409 fn c' =>
adamc@20 410 (DCon (x, n, k', c'), loc)))
adamc@163 411 | DDatatype (x, n, xncs) =>
adamc@163 412 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@163 413 case c of
adamc@163 414 NONE => S.return2 (x, n, c)
adamc@163 415 | SOME c =>
adamc@163 416 S.map2 (mfc ctx c,
adamc@163 417 fn c' => (x, n, SOME c'))) xncs,
adamc@163 418 fn xncs' =>
adamc@163 419 (DDatatype (x, n, xncs'), loc))
adamc@125 420 | DVal vi =>
adamc@125 421 S.map2 (mfvi ctx vi,
adamc@125 422 fn vi' =>
adamc@125 423 (DVal vi', loc))
adamc@125 424 | DValRec vis =>
adamc@127 425 let
adamc@127 426 val ctx = foldl (fn ((x, n, t, e, s), ctx) => bind (ctx, NamedE (x, n, t, NONE, s)))
adamc@127 427 ctx vis
adamc@127 428 in
adamc@127 429 S.map2 (ListUtil.mapfold (mfvi ctx) vis,
adamc@127 430 fn vis' =>
adamc@127 431 (DValRec vis', loc))
adamc@127 432 end
adamc@109 433 | DExport _ => S.return2 dAll
adamc@125 434
adamc@125 435 and mfvi ctx (x, n, t, e, s) =
adamc@125 436 S.bind2 (mfc ctx t,
adamc@125 437 fn t' =>
adamc@125 438 S.map2 (mfe ctx e,
adamc@125 439 fn e' =>
adamc@125 440 (x, n, t', e', s)))
adamc@20 441 in
adamc@20 442 mfd
adamc@20 443 end
adamc@20 444
adamc@23 445 fun mapfold {kind = fk, con = fc, exp = fe, decl = fd} =
adamc@23 446 mapfoldB {kind = fk,
adamc@23 447 con = fn () => fc,
adamc@23 448 exp = fn () => fe,
adamc@23 449 decl = fn () => fd,
adamc@23 450 bind = fn ((), _) => ()} ()
adamc@23 451
adamc@23 452 fun fold {kind, con, exp, decl} s d =
adamc@23 453 case mapfold {kind = fn k => fn s => S.Continue (k, kind (k, s)),
adamc@23 454 con = fn c => fn s => S.Continue (c, con (c, s)),
adamc@23 455 exp = fn e => fn s => S.Continue (e, exp (e, s)),
adamc@23 456 decl = fn d => fn s => S.Continue (d, decl (d, s))} d s of
adamc@23 457 S.Continue (_, s) => s
adamc@23 458 | S.Return _ => raise Fail "CoreUtil.Decl.fold: Impossible"
adamc@23 459
adamc@110 460 fun foldMap {kind, con, exp, decl} s d =
adamc@110 461 case mapfold {kind = fn k => fn s => S.Continue (kind (k, s)),
adamc@110 462 con = fn c => fn s => S.Continue (con (c, s)),
adamc@110 463 exp = fn e => fn s => S.Continue (exp (e, s)),
adamc@110 464 decl = fn d => fn s => S.Continue (decl (d, s))} d s of
adamc@110 465 S.Continue v => v
adamc@110 466 | S.Return _ => raise Fail "CoreUtil.Decl.foldMap: Impossible"
adamc@110 467
adamc@16 468 end
adamc@20 469
adamc@20 470 structure File = struct
adamc@20 471
adamc@20 472 datatype binder = datatype Exp.binder
adamc@20 473
adamc@20 474 fun mapfoldB (all as {bind, ...}) =
adamc@20 475 let
adamc@20 476 val mfd = Decl.mapfoldB all
adamc@20 477
adamc@20 478 fun mff ctx ds =
adamc@20 479 case ds of
adamc@20 480 nil => S.return2 nil
adamc@20 481 | d :: ds' =>
adamc@20 482 S.bind2 (mfd ctx d,
adamc@20 483 fn d' =>
adamc@20 484 let
adamc@100 485 val ctx' =
adamc@20 486 case #1 d' of
adamc@100 487 DCon (x, n, k, c) => bind (ctx, NamedC (x, n, k, SOME c))
adamc@163 488 | DDatatype (x, n, xncs) =>
adamc@163 489 let
adamc@163 490 val ctx = bind (ctx, NamedC (x, n, (KType, #2 d'), NONE))
adamc@163 491 val t = (CNamed n, #2 d')
adamc@163 492 in
adamc@163 493 foldl (fn ((x, n, to), ctx) =>
adamc@163 494 let
adamc@163 495 val t = case to of
adamc@163 496 NONE => t
adamc@163 497 | SOME t' => (TFun (t', t), #2 d')
adamc@163 498 in
adamc@163 499 bind (ctx, NamedE (x, n, t, NONE, ""))
adamc@163 500 end)
adamc@163 501 ctx xncs
adamc@163 502 end
adamc@109 503 | DVal (x, n, t, e, s) => bind (ctx, NamedE (x, n, t, SOME e, s))
adamc@125 504 | DValRec vis =>
adamc@127 505 foldl (fn ((x, n, t, e, s), ctx) => bind (ctx, NamedE (x, n, t, NONE, s)))
adamc@125 506 ctx vis
adamc@109 507 | DExport _ => ctx
adamc@20 508 in
adamc@20 509 S.map2 (mff ctx' ds',
adamc@20 510 fn ds' =>
adamc@20 511 d' :: ds')
adamc@20 512 end)
adamc@20 513 in
adamc@20 514 mff
adamc@20 515 end
adamc@20 516
adamc@23 517 fun mapfold {kind = fk, con = fc, exp = fe, decl = fd} =
adamc@23 518 mapfoldB {kind = fk,
adamc@23 519 con = fn () => fc,
adamc@23 520 exp = fn () => fe,
adamc@23 521 decl = fn () => fd,
adamc@23 522 bind = fn ((), _) => ()} ()
adamc@23 523
adamc@20 524 fun mapB {kind, con, exp, decl, bind} ctx ds =
adamc@20 525 case mapfoldB {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@20 526 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@20 527 exp = fn ctx => fn e => fn () => S.Continue (exp ctx e, ()),
adamc@20 528 decl = fn ctx => fn d => fn () => S.Continue (decl ctx d, ()),
adamc@20 529 bind = bind} ctx ds () of
adamc@20 530 S.Continue (ds, ()) => ds
adamc@20 531 | S.Return _ => raise Fail "CoreUtil.File.mapB: Impossible"
adamc@20 532
adamc@23 533 fun fold {kind, con, exp, decl} s d =
adamc@23 534 case mapfold {kind = fn k => fn s => S.Continue (k, kind (k, s)),
adamc@23 535 con = fn c => fn s => S.Continue (c, con (c, s)),
adamc@23 536 exp = fn e => fn s => S.Continue (e, exp (e, s)),
adamc@23 537 decl = fn d => fn s => S.Continue (d, decl (d, s))} d s of
adamc@23 538 S.Continue (_, s) => s
adamc@23 539 | S.Return _ => raise Fail "CoreUtil.File.fold: Impossible"
adamc@23 540
adamc@110 541 fun foldMap {kind, con, exp, decl} s d =
adamc@110 542 case mapfold {kind = fn k => fn s => S.Continue (kind (k, s)),
adamc@110 543 con = fn c => fn s => S.Continue (con (c, s)),
adamc@110 544 exp = fn e => fn s => S.Continue (exp (e, s)),
adamc@110 545 decl = fn d => fn s => S.Continue (decl (d, s))} d s of
adamc@110 546 S.Continue v => v
adamc@110 547 | S.Return _ => raise Fail "CoreUtil.File.foldMap: Impossible"
adamc@110 548
adamc@179 549 val maxName = foldl (fn ((d, _) : decl, count) =>
adamc@179 550 case d of
adamc@179 551 DCon (_, n, _, _) => Int.max (n, count)
adamc@179 552 | DDatatype (_, n, _) => Int.max (n, count)
adamc@179 553 | DVal (_, n, _, _, _) => Int.max (n, count)
adamc@179 554 | DValRec vis => foldl (fn ((_, n, _, _, _), count) => Int.max (n, count)) count vis
adamc@179 555 | DExport _ => count) 0
adamc@179 556
adamc@20 557 end
adamc@20 558
adamc@20 559 end