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annotate src/elab_util.sml @ 453:787d4931fb07

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Almost have that nested save function compiling
author Adam Chlipala <adamc@hcoop.net>
date Sat, 01 Nov 2008 21:19:43 -0400
parents 85819353a84f
children f542bc3133dc
rev   line source
adamc@2 1 (* Copyright (c) 2008, Adam Chlipala
adamc@2 2 * All rights reserved.
adamc@2 3 *
adamc@2 4 * Redistribution and use in source and binary forms, with or without
adamc@2 5 * modification, are permitted provided that the following conditions are met:
adamc@2 6 *
adamc@2 7 * - Redistributions of source code must retain the above copyright notice,
adamc@2 8 * this list of conditions and the following disclaimer.
adamc@2 9 * - Redistributions in binary form must reproduce the above copyright notice,
adamc@2 10 * this list of conditions and the following disclaimer in the documentation
adamc@2 11 * and/or other materials provided with the distribution.
adamc@2 12 * - The names of contributors may not be used to endorse or promote products
adamc@2 13 * derived from this software without specific prior written permission.
adamc@2 14 *
adamc@2 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@2 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@2 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@2 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@2 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
adamc@2 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@2 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@2 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@2 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@2 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@2 25 * POSSIBILITY OF SUCH DAMAGE.
adamc@2 26 *)
adamc@2 27
adamc@2 28 structure ElabUtil :> ELAB_UTIL = struct
adamc@2 29
adamc@2 30 open Elab
adamc@2 31
adamc@188 32 fun classifyDatatype xncs =
adamc@198 33 case xncs of
adamc@198 34 [(_, _, NONE), (_, _, SOME _)] => Option
adamc@198 35 | [(_, _, SOME _), (_, _, NONE)] => Option
adamc@198 36 | _ =>
adamc@198 37 if List.all (fn (_, _, NONE) => true | _ => false) xncs then
adamc@198 38 Enum
adamc@198 39 else
adamc@198 40 Default
adamc@188 41
adamc@2 42 structure S = Search
adamc@2 43
adamc@2 44 structure Kind = struct
adamc@2 45
adamc@6 46 fun mapfold f =
adamc@2 47 let
adamc@2 48 fun mfk k acc =
adamc@2 49 S.bindP (mfk' k acc, f)
adamc@2 50
adamc@2 51 and mfk' (kAll as (k, loc)) =
adamc@2 52 case k of
adamc@2 53 KType => S.return2 kAll
adamc@2 54
adamc@2 55 | KArrow (k1, k2) =>
adamc@2 56 S.bind2 (mfk k1,
adamc@2 57 fn k1' =>
adamc@2 58 S.map2 (mfk k2,
adamc@2 59 fn k2' =>
adamc@2 60 (KArrow (k1', k2'), loc)))
adamc@2 61
adamc@2 62 | KName => S.return2 kAll
adamc@2 63
adamc@2 64 | KRecord k =>
adamc@2 65 S.map2 (mfk k,
adamc@2 66 fn k' =>
adamc@2 67 (KRecord k', loc))
adamc@2 68
adamc@82 69 | KUnit => S.return2 kAll
adamc@82 70
adamc@207 71 | KTuple ks =>
adamc@207 72 S.map2 (ListUtil.mapfold mfk 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@76 78 | KUnif (_, _, ref (SOME k)) => mfk' k
adamc@2 79 | KUnif _ => S.return2 kAll
adamc@2 80 in
adamc@2 81 mfk
adamc@2 82 end
adamc@2 83
adamc@2 84 fun exists f k =
adamc@6 85 case mapfold (fn k => fn () =>
adamc@6 86 if f k then
adamc@6 87 S.Return ()
adamc@6 88 else
adamc@6 89 S.Continue (k, ())) k () of
adamc@6 90 S.Return _ => true
adamc@6 91 | S.Continue _ => false
adamc@6 92
adamc@6 93 end
adamc@6 94
adamc@6 95 structure Con = struct
adamc@6 96
adamc@11 97 datatype binder =
adamc@11 98 Rel of string * Elab.kind
adamc@329 99 | Named of string * int * Elab.kind
adamc@11 100
adamc@11 101 fun mapfoldB {kind = fk, con = fc, bind} =
adamc@6 102 let
adamc@6 103 val mfk = Kind.mapfold fk
adamc@6 104
adamc@11 105 fun mfc ctx c acc =
adamc@11 106 S.bindP (mfc' ctx c acc, fc ctx)
adamc@6 107
adamc@11 108 and mfc' ctx (cAll as (c, loc)) =
adamc@6 109 case c of
adamc@6 110 TFun (c1, c2) =>
adamc@11 111 S.bind2 (mfc ctx c1,
adamc@6 112 fn c1' =>
adamc@11 113 S.map2 (mfc ctx c2,
adamc@6 114 fn c2' =>
adamc@6 115 (TFun (c1', c2'), loc)))
adamc@6 116 | TCFun (e, x, k, c) =>
adamc@6 117 S.bind2 (mfk k,
adamc@6 118 fn k' =>
adamc@11 119 S.map2 (mfc (bind (ctx, Rel (x, k))) c,
adamc@6 120 fn c' =>
adamc@6 121 (TCFun (e, x, k', c'), loc)))
adamc@345 122 | CDisjoint (ai, c1, c2, c3) =>
adamc@85 123 S.bind2 (mfc ctx c1,
adamc@85 124 fn c1' =>
adamc@85 125 S.bind2 (mfc ctx c2,
adamc@85 126 fn c2' =>
adamc@85 127 S.map2 (mfc ctx c3,
adamc@85 128 fn c3' =>
adamc@345 129 (CDisjoint (ai, c1', c2', c3'), loc))))
adamc@6 130 | TRecord c =>
adamc@11 131 S.map2 (mfc ctx c,
adamc@6 132 fn c' =>
adamc@6 133 (TRecord c', loc))
adamc@6 134
adamc@6 135 | CRel _ => S.return2 cAll
adamc@6 136 | CNamed _ => S.return2 cAll
adamc@34 137 | CModProj _ => S.return2 cAll
adamc@6 138 | CApp (c1, c2) =>
adamc@11 139 S.bind2 (mfc ctx c1,
adamc@6 140 fn c1' =>
adamc@11 141 S.map2 (mfc ctx c2,
adamc@6 142 fn c2' =>
adamc@6 143 (CApp (c1', c2'), loc)))
adamc@8 144 | CAbs (x, k, c) =>
adamc@6 145 S.bind2 (mfk k,
adamc@6 146 fn k' =>
adamc@11 147 S.map2 (mfc (bind (ctx, Rel (x, k))) c,
adamc@6 148 fn c' =>
adamc@8 149 (CAbs (x, k', c'), loc)))
adamc@6 150
adamc@6 151 | CName _ => S.return2 cAll
adamc@6 152
adamc@6 153 | CRecord (k, xcs) =>
adamc@6 154 S.bind2 (mfk k,
adamc@6 155 fn k' =>
adamc@6 156 S.map2 (ListUtil.mapfold (fn (x, c) =>
adamc@11 157 S.bind2 (mfc ctx x,
adamc@6 158 fn x' =>
adamc@11 159 S.map2 (mfc ctx c,
adamc@6 160 fn c' =>
adamc@6 161 (x', c'))))
adamc@6 162 xcs,
adamc@6 163 fn xcs' =>
adamc@6 164 (CRecord (k', xcs'), loc)))
adamc@6 165 | CConcat (c1, c2) =>
adamc@11 166 S.bind2 (mfc ctx c1,
adamc@6 167 fn c1' =>
adamc@11 168 S.map2 (mfc ctx c2,
adamc@6 169 fn c2' =>
adamc@6 170 (CConcat (c1', c2'), loc)))
adamc@67 171 | CFold (k1, k2) =>
adamc@67 172 S.bind2 (mfk k1,
adamc@67 173 fn k1' =>
adamc@67 174 S.map2 (mfk k2,
adamc@67 175 fn k2' =>
adamc@67 176 (CFold (k1', k2'), loc)))
adamc@6 177
adamc@82 178 | CUnit => S.return2 cAll
adamc@82 179
adamc@207 180 | CTuple cs =>
adamc@207 181 S.map2 (ListUtil.mapfold (mfc ctx) cs,
adamc@207 182 fn cs' =>
adamc@207 183 (CTuple cs', loc))
adamc@207 184
adamc@207 185 | CProj (c, n) =>
adamc@207 186 S.map2 (mfc ctx c,
adamc@207 187 fn c' =>
adamc@207 188 (CProj (c', n), loc))
adamc@207 189
adamc@6 190 | CError => S.return2 cAll
adamc@76 191 | CUnif (_, _, _, ref (SOME c)) => mfc' ctx c
adamc@6 192 | CUnif _ => S.return2 cAll
adamc@6 193 in
adamc@6 194 mfc
adamc@6 195 end
adamc@6 196
adamc@11 197 fun mapfold {kind = fk, con = fc} =
adamc@11 198 mapfoldB {kind = fk,
adamc@11 199 con = fn () => fc,
adamc@11 200 bind = fn ((), _) => ()} ()
adamc@11 201
adamc@11 202 fun mapB {kind, con, bind} ctx c =
adamc@11 203 case mapfoldB {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@11 204 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@11 205 bind = bind} ctx c () of
adamc@11 206 S.Continue (c, ()) => c
adamc@34 207 | S.Return _ => raise Fail "ElabUtil.Con.mapB: Impossible"
adamc@34 208
adamc@34 209 fun map {kind, con} s =
adamc@34 210 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@34 211 con = fn c => fn () => S.Continue (con c, ())} s () of
adamc@34 212 S.Return () => raise Fail "ElabUtil.Con.map: Impossible"
adamc@34 213 | S.Continue (s, ()) => s
adamc@11 214
adamc@6 215 fun exists {kind, con} k =
adamc@6 216 case mapfold {kind = fn k => fn () =>
adamc@6 217 if kind k then
adamc@6 218 S.Return ()
adamc@6 219 else
adamc@6 220 S.Continue (k, ()),
adamc@6 221 con = fn c => fn () =>
adamc@6 222 if con c then
adamc@6 223 S.Return ()
adamc@6 224 else
adamc@6 225 S.Continue (c, ())} k () of
adamc@2 226 S.Return _ => true
adamc@2 227 | S.Continue _ => false
adamc@2 228
adamc@448 229 fun foldB {kind, con, bind} ctx st c =
adamc@448 230 case mapfoldB {kind = fn k => fn st => S.Continue (k, kind (k, st)),
adamc@448 231 con = fn ctx => fn c => fn st => S.Continue (c, con (ctx, c, st)),
adamc@448 232 bind = bind} ctx c st of
adamc@448 233 S.Continue (_, st) => st
adamc@448 234 | S.Return _ => raise Fail "ElabUtil.Con.foldB: Impossible"
adamc@448 235
adamc@2 236 end
adamc@2 237
adamc@10 238 structure Exp = struct
adamc@10 239
adamc@11 240 datatype binder =
adamc@11 241 RelC of string * Elab.kind
adamc@329 242 | NamedC of string * int * Elab.kind
adamc@11 243 | RelE of string * Elab.con
adamc@11 244 | NamedE of string * Elab.con
adamc@11 245
adamc@11 246 fun mapfoldB {kind = fk, con = fc, exp = fe, bind} =
adamc@10 247 let
adamc@10 248 val mfk = Kind.mapfold fk
adamc@10 249
adamc@11 250 fun bind' (ctx, b) =
adamc@11 251 let
adamc@11 252 val b' = case b of
adamc@11 253 Con.Rel x => RelC x
adamc@11 254 | Con.Named x => NamedC x
adamc@11 255 in
adamc@11 256 bind (ctx, b')
adamc@11 257 end
adamc@11 258 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@10 259
adamc@11 260 fun mfe ctx e acc =
adamc@11 261 S.bindP (mfe' ctx e acc, fe ctx)
adamc@11 262
adamc@11 263 and mfe' ctx (eAll as (e, loc)) =
adamc@10 264 case e of
adamc@14 265 EPrim _ => S.return2 eAll
adamc@14 266 | ERel _ => S.return2 eAll
adamc@10 267 | ENamed _ => S.return2 eAll
adamc@34 268 | EModProj _ => S.return2 eAll
adamc@10 269 | EApp (e1, e2) =>
adamc@11 270 S.bind2 (mfe ctx e1,
adamc@10 271 fn e1' =>
adamc@11 272 S.map2 (mfe ctx e2,
adamc@10 273 fn e2' =>
adamc@10 274 (EApp (e1', e2'), loc)))
adamc@26 275 | EAbs (x, dom, ran, e) =>
adamc@26 276 S.bind2 (mfc ctx dom,
adamc@26 277 fn dom' =>
adamc@26 278 S.bind2 (mfc ctx ran,
adamc@26 279 fn ran' =>
adamc@26 280 S.map2 (mfe (bind (ctx, RelE (x, dom'))) e,
adamc@26 281 fn e' =>
adamc@26 282 (EAbs (x, dom', ran', e'), loc))))
adamc@26 283
adamc@10 284 | ECApp (e, c) =>
adamc@11 285 S.bind2 (mfe ctx e,
adamc@10 286 fn e' =>
adamc@11 287 S.map2 (mfc ctx c,
adamc@10 288 fn c' =>
adamc@10 289 (ECApp (e', c'), loc)))
adamc@10 290 | ECAbs (expl, x, k, e) =>
adamc@10 291 S.bind2 (mfk k,
adamc@10 292 fn k' =>
adamc@11 293 S.map2 (mfe (bind (ctx, RelC (x, k))) e,
adamc@10 294 fn e' =>
adamc@10 295 (ECAbs (expl, x, k', e'), loc)))
adamc@10 296
adamc@12 297 | ERecord xes =>
adamc@29 298 S.map2 (ListUtil.mapfold (fn (x, e, t) =>
adamc@12 299 S.bind2 (mfc ctx x,
adamc@12 300 fn x' =>
adamc@29 301 S.bind2 (mfe ctx e,
adamc@12 302 fn e' =>
adamc@29 303 S.map2 (mfc ctx t,
adamc@29 304 fn t' =>
adamc@29 305 (x', e', t')))))
adamc@12 306 xes,
adamc@12 307 fn xes' =>
adamc@12 308 (ERecord xes', loc))
adamc@12 309 | EField (e, c, {field, rest}) =>
adamc@12 310 S.bind2 (mfe ctx e,
adamc@12 311 fn e' =>
adamc@12 312 S.bind2 (mfc ctx c,
adamc@12 313 fn c' =>
adamc@12 314 S.bind2 (mfc ctx field,
adamc@12 315 fn field' =>
adamc@12 316 S.map2 (mfc ctx rest,
adamc@12 317 fn rest' =>
adamc@12 318 (EField (e', c', {field = field', rest = rest'}), loc)))))
adamc@445 319 | EConcat (e1, c1, e2, c2) =>
adamc@339 320 S.bind2 (mfe ctx e1,
adamc@339 321 fn e1' =>
adamc@445 322 S.bind2 (mfc ctx c1,
adamc@445 323 fn c1' =>
adamc@339 324 S.bind2 (mfe ctx e2,
adamc@339 325 fn e2' =>
adamc@445 326 S.map2 (mfc ctx c2,
adamc@445 327 fn c2' =>
adamc@445 328 (EConcat (e1', c1', e2', c2'),
adamc@445 329 loc)))))
adamc@149 330 | ECut (e, c, {field, rest}) =>
adamc@149 331 S.bind2 (mfe ctx e,
adamc@149 332 fn e' =>
adamc@149 333 S.bind2 (mfc ctx c,
adamc@149 334 fn c' =>
adamc@149 335 S.bind2 (mfc ctx field,
adamc@149 336 fn field' =>
adamc@149 337 S.map2 (mfc ctx rest,
adamc@149 338 fn rest' =>
adamc@149 339 (ECut (e', c', {field = field', rest = rest'}), loc)))))
adamc@12 340
adamc@71 341 | EFold k =>
adamc@71 342 S.map2 (mfk k,
adamc@71 343 fn k' =>
adamc@71 344 (EFold k', loc))
adamc@71 345
adamc@182 346 | ECase (e, pes, {disc, result}) =>
adamc@171 347 S.bind2 (mfe ctx e,
adamc@171 348 fn e' =>
adamc@171 349 S.bind2 (ListUtil.mapfold (fn (p, e) =>
adamc@448 350 let
adamc@448 351 fun pb ((p, _), ctx) =
adamc@448 352 case p of
adamc@448 353 PWild => ctx
adamc@448 354 | PVar (x, t) => bind (ctx, RelE (x, t))
adamc@448 355 | PPrim _ => ctx
adamc@448 356 | PCon (_, _, _, NONE) => ctx
adamc@448 357 | PCon (_, _, _, SOME p) => pb (p, ctx)
adamc@448 358 | PRecord xps => foldl (fn ((_, p, _), ctx) =>
adamc@448 359 pb (p, ctx)) ctx xps
adamc@448 360 in
adamc@448 361 S.map2 (mfe (pb (p, ctx)) e,
adamc@448 362 fn e' => (p, e'))
adamc@448 363 end) pes,
adamc@171 364 fn pes' =>
adamc@182 365 S.bind2 (mfc ctx disc,
adamc@182 366 fn disc' =>
adamc@182 367 S.map2 (mfc ctx result,
adamc@182 368 fn result' =>
adamc@182 369 (ECase (e', pes', {disc = disc', result = result'}), loc)))))
adamc@171 370
adamc@10 371 | EError => S.return2 eAll
adamc@228 372 | EUnif (ref (SOME e)) => mfe ctx e
adamc@228 373 | EUnif _ => S.return2 eAll
adamc@447 374
adamc@447 375 | ELet (des, e) =>
adamc@447 376 let
adamc@447 377 val (des, ctx) = foldl (fn (ed, (des, ctx)) =>
adamc@453 378 let
adamc@453 379 val ctx' =
adamc@453 380 case #1 ed of
adamc@453 381 EDVal (x, t, _) => bind (ctx, RelE (x, t))
adamc@453 382 | EDValRec vis =>
adamc@453 383 foldl (fn ((x, t, _), ctx) => bind (ctx, RelE (x, t))) ctx vis
adamc@453 384 in
adamc@453 385 (S.bind2 (des,
adamc@453 386 fn des' =>
adamc@453 387 S.map2 (mfed ctx ed,
adamc@447 388 fn ed' => des' @ [ed'])),
adamc@453 389 ctx')
adamc@453 390 end)
adamc@447 391 (S.return2 [], ctx) des
adamc@447 392 in
adamc@447 393 S.bind2 (des,
adamc@447 394 fn des' =>
adamc@447 395 S.map2 (mfe ctx e,
adamc@447 396 fn e' =>
adamc@447 397 (ELet (des', e'), loc)))
adamc@447 398 end
adamc@447 399
adamc@447 400 and mfed ctx (dAll as (d, loc)) =
adamc@447 401 case d of
adamc@447 402 EDVal vi =>
adamc@447 403 S.map2 (mfvi ctx vi,
adamc@447 404 fn vi' =>
adamc@447 405 (EDVal vi', loc))
adamc@447 406 | EDValRec vis =>
adamc@447 407 let
adamc@453 408 val ctx = foldl (fn ((x, t, _), ctx) => bind (ctx, RelE (x, t))) ctx vis
adamc@447 409 in
adamc@447 410 S.map2 (ListUtil.mapfold (mfvi ctx) vis,
adamc@447 411 fn vis' =>
adamc@447 412 (EDValRec vis', loc))
adamc@447 413 end
adamc@447 414
adamc@447 415 and mfvi ctx (x, c, e) =
adamc@447 416 S.bind2 (mfc ctx c,
adamc@447 417 fn c' =>
adamc@447 418 S.map2 (mfe ctx e,
adamc@447 419 fn e' =>
adamc@447 420 (x, c', e')))
adamc@10 421 in
adamc@10 422 mfe
adamc@10 423 end
adamc@10 424
adamc@11 425 fun mapfold {kind = fk, con = fc, exp = fe} =
adamc@11 426 mapfoldB {kind = fk,
adamc@11 427 con = fn () => fc,
adamc@11 428 exp = fn () => fe,
adamc@11 429 bind = fn ((), _) => ()} ()
adamc@11 430
adamc@10 431 fun exists {kind, con, exp} k =
adamc@10 432 case mapfold {kind = fn k => fn () =>
adamc@10 433 if kind k then
adamc@10 434 S.Return ()
adamc@10 435 else
adamc@10 436 S.Continue (k, ()),
adamc@10 437 con = fn c => fn () =>
adamc@10 438 if con c then
adamc@10 439 S.Return ()
adamc@10 440 else
adamc@10 441 S.Continue (c, ()),
adamc@10 442 exp = fn e => fn () =>
adamc@10 443 if exp e then
adamc@10 444 S.Return ()
adamc@10 445 else
adamc@10 446 S.Continue (e, ())} k () of
adamc@10 447 S.Return _ => true
adamc@10 448 | S.Continue _ => false
adamc@10 449
adamc@211 450 fun mapB {kind, con, exp, bind} ctx e =
adamc@211 451 case mapfoldB {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@211 452 con = fn ctx => fn c => fn () => S.Continue (con ctx c, ()),
adamc@211 453 exp = fn ctx => fn e => fn () => S.Continue (exp ctx e, ()),
adamc@211 454 bind = bind} ctx e () of
adamc@211 455 S.Continue (e, ()) => e
adamc@211 456 | S.Return _ => raise Fail "ElabUtil.Exp.mapB: Impossible"
adamc@211 457
adamc@448 458 fun foldB {kind, con, exp, bind} ctx st e =
adamc@448 459 case mapfoldB {kind = fn k => fn st => S.Continue (k, kind (k, st)),
adamc@448 460 con = fn ctx => fn c => fn st => S.Continue (c, con (ctx, c, st)),
adamc@448 461 exp = fn ctx => fn e => fn st => S.Continue (e, exp (ctx, e, st)),
adamc@448 462 bind = bind} ctx e st of
adamc@448 463 S.Continue (_, st) => st
adamc@448 464 | S.Return _ => raise Fail "ElabUtil.Exp.foldB: Impossible"
adamc@448 465
adamc@10 466 end
adamc@10 467
adamc@34 468 structure Sgn = struct
adamc@34 469
adamc@34 470 datatype binder =
adamc@34 471 RelC of string * Elab.kind
adamc@329 472 | NamedC of string * int * Elab.kind
adamc@34 473 | Str of string * Elab.sgn
adamc@59 474 | Sgn of string * Elab.sgn
adamc@34 475
adamc@34 476 fun mapfoldB {kind, con, sgn_item, sgn, bind} =
adamc@34 477 let
adamc@34 478 fun bind' (ctx, b) =
adamc@34 479 let
adamc@34 480 val b' = case b of
adamc@34 481 Con.Rel x => RelC x
adamc@34 482 | Con.Named x => NamedC x
adamc@34 483 in
adamc@34 484 bind (ctx, b')
adamc@34 485 end
adamc@34 486 val con = Con.mapfoldB {kind = kind, con = con, bind = bind'}
adamc@34 487
adamc@34 488 val kind = Kind.mapfold kind
adamc@34 489
adamc@34 490 fun sgi ctx si acc =
adamc@34 491 S.bindP (sgi' ctx si acc, sgn_item ctx)
adamc@34 492
adamc@156 493 and sgi' ctx (siAll as (si, loc)) =
adamc@34 494 case si of
adamc@34 495 SgiConAbs (x, n, k) =>
adamc@34 496 S.map2 (kind k,
adamc@34 497 fn k' =>
adamc@34 498 (SgiConAbs (x, n, k'), loc))
adamc@34 499 | SgiCon (x, n, k, c) =>
adamc@34 500 S.bind2 (kind k,
adamc@34 501 fn k' =>
adamc@34 502 S.map2 (con ctx c,
adamc@34 503 fn c' =>
adamc@34 504 (SgiCon (x, n, k', c'), loc)))
adamc@191 505 | SgiDatatype (x, n, xs, xncs) =>
adamc@156 506 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@156 507 case c of
adamc@156 508 NONE => S.return2 (x, n, c)
adamc@156 509 | SOME c =>
adamc@156 510 S.map2 (con ctx c,
adamc@156 511 fn c' => (x, n, SOME c'))) xncs,
adamc@156 512 fn xncs' =>
adamc@191 513 (SgiDatatype (x, n, xs, xncs'), loc))
adamc@191 514 | SgiDatatypeImp (x, n, m1, ms, s, xs, xncs) =>
adamc@162 515 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@162 516 case c of
adamc@162 517 NONE => S.return2 (x, n, c)
adamc@162 518 | SOME c =>
adamc@162 519 S.map2 (con ctx c,
adamc@162 520 fn c' => (x, n, SOME c'))) xncs,
adamc@162 521 fn xncs' =>
adamc@191 522 (SgiDatatypeImp (x, n, m1, ms, s, xs, xncs'), loc))
adamc@34 523 | SgiVal (x, n, c) =>
adamc@34 524 S.map2 (con ctx c,
adamc@34 525 fn c' =>
adamc@34 526 (SgiVal (x, n, c'), loc))
adamc@34 527 | SgiStr (x, n, s) =>
adamc@34 528 S.map2 (sg ctx s,
adamc@34 529 fn s' =>
adamc@34 530 (SgiStr (x, n, s'), loc))
adamc@59 531 | SgiSgn (x, n, s) =>
adamc@59 532 S.map2 (sg ctx s,
adamc@59 533 fn s' =>
adamc@59 534 (SgiSgn (x, n, s'), loc))
adamc@88 535 | SgiConstraint (c1, c2) =>
adamc@88 536 S.bind2 (con ctx c1,
adamc@88 537 fn c1' =>
adamc@88 538 S.map2 (con ctx c2,
adamc@88 539 fn c2' =>
adamc@88 540 (SgiConstraint (c1', c2'), loc)))
adamc@205 541 | SgiTable (tn, x, n, c) =>
adamc@203 542 S.map2 (con ctx c,
adamc@203 543 fn c' =>
adamc@205 544 (SgiTable (tn, x, n, c'), loc))
adamc@338 545 | SgiSequence _ => S.return2 siAll
adamc@211 546 | SgiClassAbs _ => S.return2 siAll
adamc@211 547 | SgiClass (x, n, c) =>
adamc@211 548 S.map2 (con ctx c,
adamc@211 549 fn c' =>
adamc@211 550 (SgiClass (x, n, c'), loc))
adamc@34 551
adamc@34 552 and sg ctx s acc =
adamc@34 553 S.bindP (sg' ctx s acc, sgn ctx)
adamc@34 554
adamc@34 555 and sg' ctx (sAll as (s, loc)) =
adamc@34 556 case s of
adamc@34 557 SgnConst sgis =>
adamc@34 558 S.map2 (ListUtil.mapfoldB (fn (ctx, si) =>
adamc@34 559 (case #1 si of
adamc@329 560 SgiConAbs (x, n, k) =>
adamc@329 561 bind (ctx, NamedC (x, n, k))
adamc@329 562 | SgiCon (x, n, k, _) =>
adamc@329 563 bind (ctx, NamedC (x, n, k))
adamc@191 564 | SgiDatatype (x, n, _, xncs) =>
adamc@329 565 bind (ctx, NamedC (x, n, (KType, loc)))
adamc@329 566 | SgiDatatypeImp (x, n, _, _, _, _, _) =>
adamc@329 567 bind (ctx, NamedC (x, n, (KType, loc)))
adamc@34 568 | SgiVal _ => ctx
adamc@34 569 | SgiStr (x, _, sgn) =>
adamc@59 570 bind (ctx, Str (x, sgn))
adamc@59 571 | SgiSgn (x, _, sgn) =>
adamc@88 572 bind (ctx, Sgn (x, sgn))
adamc@203 573 | SgiConstraint _ => ctx
adamc@211 574 | SgiTable _ => ctx
adamc@338 575 | SgiSequence _ => ctx
adamc@329 576 | SgiClassAbs (x, n) =>
adamc@329 577 bind (ctx, NamedC (x, n, (KArrow ((KType, loc), (KType, loc)), loc)))
adamc@329 578 | SgiClass (x, n, _) =>
adamc@329 579 bind (ctx, NamedC (x, n, (KArrow ((KType, loc), (KType, loc)), loc))),
adamc@34 580 sgi ctx si)) ctx sgis,
adamc@34 581 fn sgis' =>
adamc@34 582 (SgnConst sgis', loc))
adamc@34 583
adamc@34 584 | SgnVar _ => S.return2 sAll
adamc@41 585 | SgnFun (m, n, s1, s2) =>
adamc@41 586 S.bind2 (sg ctx s1,
adamc@41 587 fn s1' =>
adamc@41 588 S.map2 (sg (bind (ctx, Str (m, s1'))) s2,
adamc@41 589 fn s2' =>
adamc@41 590 (SgnFun (m, n, s1', s2'), loc)))
adamc@59 591 | SgnProj _ => S.return2 sAll
adamc@42 592 | SgnWhere (sgn, x, c) =>
adamc@42 593 S.bind2 (sg ctx sgn,
adamc@42 594 fn sgn' =>
adamc@42 595 S.map2 (con ctx c,
adamc@42 596 fn c' =>
adamc@42 597 (SgnWhere (sgn', x, c'), loc)))
adamc@34 598 | SgnError => S.return2 sAll
adamc@34 599 in
adamc@34 600 sg
adamc@34 601 end
adamc@34 602
adamc@34 603 fun mapfold {kind, con, sgn_item, sgn} =
adamc@34 604 mapfoldB {kind = kind,
adamc@34 605 con = fn () => con,
adamc@34 606 sgn_item = fn () => sgn_item,
adamc@34 607 sgn = fn () => sgn,
adamc@34 608 bind = fn ((), _) => ()} ()
adamc@34 609
adamc@34 610 fun map {kind, con, sgn_item, sgn} s =
adamc@34 611 case mapfold {kind = fn k => fn () => S.Continue (kind k, ()),
adamc@34 612 con = fn c => fn () => S.Continue (con c, ()),
adamc@34 613 sgn_item = fn si => fn () => S.Continue (sgn_item si, ()),
adamc@34 614 sgn = fn s => fn () => S.Continue (sgn s, ())} s () of
adamc@34 615 S.Return () => raise Fail "Elab_util.Sgn.map"
adamc@34 616 | S.Continue (s, ()) => s
adamc@34 617
adamc@2 618 end
adamc@34 619
adamc@76 620 structure Decl = struct
adamc@76 621
adamc@76 622 datatype binder =
adamc@76 623 RelC of string * Elab.kind
adamc@329 624 | NamedC of string * int * Elab.kind
adamc@76 625 | RelE of string * Elab.con
adamc@76 626 | NamedE of string * Elab.con
adamc@76 627 | Str of string * Elab.sgn
adamc@76 628 | Sgn of string * Elab.sgn
adamc@76 629
adamc@76 630 fun mapfoldB {kind = fk, con = fc, exp = fe, sgn_item = fsgi, sgn = fsg, str = fst, decl = fd, bind} =
adamc@76 631 let
adamc@76 632 val mfk = Kind.mapfold fk
adamc@76 633
adamc@76 634 fun bind' (ctx, b) =
adamc@76 635 let
adamc@76 636 val b' = case b of
adamc@76 637 Con.Rel x => RelC x
adamc@76 638 | Con.Named x => NamedC x
adamc@76 639 in
adamc@76 640 bind (ctx, b')
adamc@76 641 end
adamc@76 642 val mfc = Con.mapfoldB {kind = fk, con = fc, bind = bind'}
adamc@76 643
adamc@76 644 fun bind' (ctx, b) =
adamc@76 645 let
adamc@76 646 val b' = case b of
adamc@76 647 Exp.RelC x => RelC x
adamc@76 648 | Exp.NamedC x => NamedC x
adamc@76 649 | Exp.RelE x => RelE x
adamc@76 650 | Exp.NamedE x => NamedE x
adamc@76 651 in
adamc@76 652 bind (ctx, b')
adamc@76 653 end
adamc@76 654 val mfe = Exp.mapfoldB {kind = fk, con = fc, exp = fe, bind = bind'}
adamc@76 655
adamc@76 656 fun bind' (ctx, b) =
adamc@76 657 let
adamc@76 658 val b' = case b of
adamc@76 659 Sgn.RelC x => RelC x
adamc@76 660 | Sgn.NamedC x => NamedC x
adamc@76 661 | Sgn.Sgn x => Sgn x
adamc@76 662 | Sgn.Str x => Str x
adamc@76 663 in
adamc@76 664 bind (ctx, b')
adamc@76 665 end
adamc@76 666 val mfsg = Sgn.mapfoldB {kind = fk, con = fc, sgn_item = fsgi, sgn = fsg, bind = bind'}
adamc@76 667
adamc@76 668 fun mfst ctx str acc =
adamc@76 669 S.bindP (mfst' ctx str acc, fst ctx)
adamc@76 670
adamc@76 671 and mfst' ctx (strAll as (str, loc)) =
adamc@76 672 case str of
adamc@76 673 StrConst ds =>
adamc@76 674 S.map2 (ListUtil.mapfoldB (fn (ctx, d) =>
adamc@76 675 (case #1 d of
adamc@329 676 DCon (x, n, k, _) =>
adamc@329 677 bind (ctx, NamedC (x, n, k))
adamc@191 678 | DDatatype (x, n, xs, xncs) =>
adamc@156 679 let
adamc@329 680 val ctx = bind (ctx, NamedC (x, n, (KType, loc)))
adamc@156 681 in
adamc@156 682 foldl (fn ((x, _, co), ctx) =>
adamc@156 683 let
adamc@156 684 val t =
adamc@156 685 case co of
adamc@156 686 NONE => CNamed n
adamc@156 687 | SOME t => TFun (t, (CNamed n, loc))
adamc@191 688
adamc@191 689 val k = (KType, loc)
adamc@191 690 val t = (t, loc)
adamc@191 691 val t = foldr (fn (x, t) =>
adamc@191 692 (TCFun (Explicit,
adamc@191 693 x,
adamc@191 694 k,
adamc@191 695 t), loc))
adamc@191 696 t xs
adamc@156 697 in
adamc@191 698 bind (ctx, NamedE (x, t))
adamc@156 699 end)
adamc@156 700 ctx xncs
adamc@156 701 end
adamc@191 702 | DDatatypeImp (x, n, m, ms, x', _, _) =>
adamc@329 703 bind (ctx, NamedC (x, n, (KType, loc)))
adamc@76 704 | DVal (x, _, c, _) =>
adamc@76 705 bind (ctx, NamedE (x, c))
adamc@123 706 | DValRec vis =>
adamc@123 707 foldl (fn ((x, _, c, _), ctx) => bind (ctx, NamedE (x, c))) ctx vis
adamc@76 708 | DSgn (x, _, sgn) =>
adamc@76 709 bind (ctx, Sgn (x, sgn))
adamc@76 710 | DStr (x, _, sgn, _) =>
adamc@76 711 bind (ctx, Str (x, sgn))
adamc@76 712 | DFfiStr (x, _, sgn) =>
adamc@88 713 bind (ctx, Str (x, sgn))
adamc@100 714 | DConstraint _ => ctx
adamc@203 715 | DExport _ => ctx
adamc@205 716 | DTable (tn, x, n, c) =>
adamc@338 717 bind (ctx, NamedE (x, (CApp ((CModProj (n, [], "sql_table"), loc),
adamc@213 718 c), loc)))
adamc@338 719 | DSequence (tn, x, n) =>
adamc@338 720 bind (ctx, NamedE (x, (CModProj (n, [], "sql_sequence"), loc)))
adamc@329 721 | DClass (x, n, _) =>
adamc@329 722 bind (ctx, NamedC (x, n, (KArrow ((KType, loc), (KType, loc)), loc)))
adamc@271 723 | DDatabase _ => ctx,
adamc@76 724 mfd ctx d)) ctx ds,
adamc@76 725 fn ds' => (StrConst ds', loc))
adamc@76 726 | StrVar _ => S.return2 strAll
adamc@76 727 | StrProj (str, x) =>
adamc@76 728 S.map2 (mfst ctx str,
adamc@76 729 fn str' =>
adamc@76 730 (StrProj (str', x), loc))
adamc@76 731 | StrFun (x, n, sgn1, sgn2, str) =>
adamc@76 732 S.bind2 (mfsg ctx sgn1,
adamc@76 733 fn sgn1' =>
adamc@76 734 S.bind2 (mfsg ctx sgn2,
adamc@76 735 fn sgn2' =>
adamc@76 736 S.map2 (mfst ctx str,
adamc@76 737 fn str' =>
adamc@76 738 (StrFun (x, n, sgn1', sgn2', str'), loc))))
adamc@76 739 | StrApp (str1, str2) =>
adamc@76 740 S.bind2 (mfst ctx str1,
adamc@76 741 fn str1' =>
adamc@76 742 S.map2 (mfst ctx str2,
adamc@76 743 fn str2' =>
adamc@76 744 (StrApp (str1', str2'), loc)))
adamc@76 745 | StrError => S.return2 strAll
adamc@76 746
adamc@76 747 and mfd ctx d acc =
adamc@76 748 S.bindP (mfd' ctx d acc, fd ctx)
adamc@76 749
adamc@76 750 and mfd' ctx (dAll as (d, loc)) =
adamc@76 751 case d of
adamc@76 752 DCon (x, n, k, c) =>
adamc@76 753 S.bind2 (mfk k,
adamc@76 754 fn k' =>
adamc@76 755 S.map2 (mfc ctx c,
adamc@76 756 fn c' =>
adamc@76 757 (DCon (x, n, k', c'), loc)))
adamc@191 758 | DDatatype (x, n, xs, xncs) =>
adamc@156 759 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@156 760 case c of
adamc@156 761 NONE => S.return2 (x, n, c)
adamc@156 762 | SOME c =>
adamc@156 763 S.map2 (mfc ctx c,
adamc@156 764 fn c' => (x, n, SOME c'))) xncs,
adamc@156 765 fn xncs' =>
adamc@191 766 (DDatatype (x, n, xs, xncs'), loc))
adamc@191 767 | DDatatypeImp (x, n, m1, ms, s, xs, xncs) =>
adamc@162 768 S.map2 (ListUtil.mapfold (fn (x, n, c) =>
adamc@162 769 case c of
adamc@162 770 NONE => S.return2 (x, n, c)
adamc@162 771 | SOME c =>
adamc@162 772 S.map2 (mfc ctx c,
adamc@162 773 fn c' => (x, n, SOME c'))) xncs,
adamc@162 774 fn xncs' =>
adamc@191 775 (DDatatypeImp (x, n, m1, ms, s, xs, xncs'), loc))
adamc@123 776 | DVal vi =>
adamc@123 777 S.map2 (mfvi ctx vi,
adamc@123 778 fn vi' =>
adamc@123 779 (DVal vi', loc))
adamc@123 780 | DValRec vis =>
adamc@123 781 S.map2 (ListUtil.mapfold (mfvi ctx) vis,
adamc@123 782 fn vis' =>
adamc@123 783 (DValRec vis', loc))
adamc@76 784 | DSgn (x, n, sgn) =>
adamc@76 785 S.map2 (mfsg ctx sgn,
adamc@76 786 fn sgn' =>
adamc@76 787 (DSgn (x, n, sgn'), loc))
adamc@76 788 | DStr (x, n, sgn, str) =>
adamc@76 789 S.bind2 (mfsg ctx sgn,
adamc@76 790 fn sgn' =>
adamc@76 791 S.map2 (mfst ctx str,
adamc@76 792 fn str' =>
adamc@76 793 (DStr (x, n, sgn', str'), loc)))
adamc@76 794 | DFfiStr (x, n, sgn) =>
adamc@76 795 S.map2 (mfsg ctx sgn,
adamc@76 796 fn sgn' =>
adamc@76 797 (DFfiStr (x, n, sgn'), loc))
adamc@88 798 | DConstraint (c1, c2) =>
adamc@88 799 S.bind2 (mfc ctx c1,
adamc@88 800 fn c1' =>
adamc@88 801 S.map2 (mfc ctx c2,
adamc@88 802 fn c2' =>
adamc@88 803 (DConstraint (c1', c2'), loc)))
adamc@109 804 | DExport (en, sgn, str) =>
adamc@109 805 S.bind2 (mfsg ctx sgn,
adamc@109 806 fn sgn' =>
adamc@109 807 S.map2 (mfst ctx str,
adamc@109 808 fn str' =>
adamc@109 809 (DExport (en, sgn', str'), loc)))
adamc@123 810
adamc@205 811 | DTable (tn, x, n, c) =>
adamc@203 812 S.map2 (mfc ctx c,
adamc@203 813 fn c' =>
adamc@205 814 (DTable (tn, x, n, c'), loc))
adamc@338 815 | DSequence _ => S.return2 dAll
adamc@203 816
adamc@338 817 | DClass (x, n, c) =>
adamc@213 818 S.map2 (mfc ctx c,
adamc@338 819 fn c' =>
adamc@338 820 (DClass (x, n, c'), loc))
adamc@213 821
adamc@338 822 | DDatabase _ => S.return2 dAll
adamc@271 823
adamc@123 824 and mfvi ctx (x, n, c, e) =
adamc@123 825 S.bind2 (mfc ctx c,
adamc@123 826 fn c' =>
adamc@123 827 S.map2 (mfe ctx e,
adamc@123 828 fn e' =>
adamc@123 829 (x, n, c', e')))
adamc@76 830 in
adamc@76 831 mfd
adamc@76 832 end
adamc@76 833
adamc@76 834 fun mapfold {kind, con, exp, sgn_item, sgn, str, decl} =
adamc@76 835 mapfoldB {kind = kind,
adamc@76 836 con = fn () => con,
adamc@76 837 exp = fn () => exp,
adamc@76 838 sgn_item = fn () => sgn_item,
adamc@76 839 sgn = fn () => sgn,
adamc@76 840 str = fn () => str,
adamc@76 841 decl = fn () => decl,
adamc@76 842 bind = fn ((), _) => ()} ()
adamc@76 843
adamc@76 844 fun exists {kind, con, exp, sgn_item, sgn, str, decl} k =
adamc@76 845 case mapfold {kind = fn k => fn () =>
adamc@76 846 if kind k then
adamc@76 847 S.Return ()
adamc@76 848 else
adamc@76 849 S.Continue (k, ()),
adamc@76 850 con = fn c => fn () =>
adamc@76 851 if con c then
adamc@76 852 S.Return ()
adamc@76 853 else
adamc@76 854 S.Continue (c, ()),
adamc@76 855 exp = fn e => fn () =>
adamc@76 856 if exp e then
adamc@76 857 S.Return ()
adamc@76 858 else
adamc@76 859 S.Continue (e, ()),
adamc@76 860 sgn_item = fn sgi => fn () =>
adamc@76 861 if sgn_item sgi then
adamc@76 862 S.Return ()
adamc@76 863 else
adamc@76 864 S.Continue (sgi, ()),
adamc@76 865 sgn = fn x => fn () =>
adamc@76 866 if sgn x then
adamc@76 867 S.Return ()
adamc@76 868 else
adamc@76 869 S.Continue (x, ()),
adamc@76 870 str = fn x => fn () =>
adamc@76 871 if str x then
adamc@76 872 S.Return ()
adamc@76 873 else
adamc@76 874 S.Continue (x, ()),
adamc@76 875 decl = fn x => fn () =>
adamc@76 876 if decl x then
adamc@76 877 S.Return ()
adamc@76 878 else
adamc@76 879 S.Continue (x, ())} k () of
adamc@76 880 S.Return _ => true
adamc@76 881 | S.Continue _ => false
adamc@76 882
adamc@76 883 fun search {kind, con, exp, sgn_item, sgn, str, decl} k =
adamc@76 884 case mapfold {kind = fn x => fn () =>
adamc@76 885 case kind x of
adamc@76 886 NONE => S.Continue (x, ())
adamc@76 887 | SOME v => S.Return v,
adamc@76 888
adamc@76 889 con = fn x => fn () =>
adamc@76 890 case con x of
adamc@76 891 NONE => S.Continue (x, ())
adamc@76 892 | SOME v => S.Return v,
adamc@76 893
adamc@76 894 exp = fn x => fn () =>
adamc@76 895 case exp x of
adamc@76 896 NONE => S.Continue (x, ())
adamc@76 897 | SOME v => S.Return v,
adamc@76 898
adamc@76 899 sgn_item = fn x => fn () =>
adamc@76 900 case sgn_item x of
adamc@76 901 NONE => S.Continue (x, ())
adamc@76 902 | SOME v => S.Return v,
adamc@76 903
adamc@76 904 sgn = fn x => fn () =>
adamc@76 905 case sgn x of
adamc@76 906 NONE => S.Continue (x, ())
adamc@76 907 | SOME v => S.Return v,
adamc@76 908
adamc@76 909 str = fn x => fn () =>
adamc@76 910 case str x of
adamc@76 911 NONE => S.Continue (x, ())
adamc@76 912 | SOME v => S.Return v,
adamc@76 913
adamc@76 914 decl = fn x => fn () =>
adamc@76 915 case decl x of
adamc@76 916 NONE => S.Continue (x, ())
adamc@76 917 | SOME v => S.Return v
adamc@76 918
adamc@76 919 } k () of
adamc@76 920 S.Return x => SOME x
adamc@76 921 | S.Continue _ => NONE
adamc@76 922
adamc@448 923 fun foldMapB {kind, con, exp, sgn_item, sgn, str, decl, bind} ctx st d =
adamc@448 924 case mapfoldB {kind = fn x => fn st => S.Continue (kind (x, st)),
adamc@448 925 con = fn ctx => fn x => fn st => S.Continue (con (ctx, x, st)),
adamc@448 926 exp = fn ctx => fn x => fn st => S.Continue (exp (ctx, x, st)),
adamc@448 927 sgn_item = fn ctx => fn x => fn st => S.Continue (sgn_item (ctx, x, st)),
adamc@448 928 sgn = fn ctx => fn x => fn st => S.Continue (sgn (ctx, x, st)),
adamc@448 929 str = fn ctx => fn x => fn st => S.Continue (str (ctx, x, st)),
adamc@448 930 decl = fn ctx => fn x => fn st => S.Continue (decl (ctx, x, st)),
adamc@448 931 bind = bind} ctx d st of
adamc@448 932 S.Continue x => x
adamc@448 933 | S.Return _ => raise Fail "ElabUtil.Decl.foldMapB: Impossible"
adamc@448 934
adamc@448 935 end
adamc@448 936
adamc@448 937 structure File = struct
adamc@448 938
adamc@448 939 fun maxName ds = foldl (fn (d, count) => Int.max (maxNameDecl d, count)) 0 ds
adamc@448 940
adamc@448 941 and maxNameDecl (d, _) =
adamc@448 942 case d of
adamc@448 943 DCon (_, n, _, _) => n
adamc@448 944 | DDatatype (_, n, _, ns) =>
adamc@448 945 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@448 946 n ns
adamc@448 947 | DDatatypeImp (_, n1, n2, _, _, _, ns) =>
adamc@448 948 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@448 949 (Int.max (n1, n2)) ns
adamc@448 950 | DVal (_, n, _, _) => n
adamc@448 951 | DValRec vis => foldl (fn ((_, n, _, _), count) => Int.max (n, count)) 0 vis
adamc@448 952 | DStr (_, n, sgn, str) => Int.max (n, Int.max (maxNameSgn sgn, maxNameStr str))
adamc@448 953 | DSgn (_, n, sgn) => Int.max (n, maxNameSgn sgn)
adamc@448 954 | DFfiStr (_, n, sgn) => Int.max (n, maxNameSgn sgn)
adamc@448 955 | DConstraint _ => 0
adamc@448 956 | DClass (_, n, _) => n
adamc@448 957 | DExport _ => 0
adamc@448 958 | DTable (n, _, _, _) => n
adamc@448 959 | DSequence (n, _, _) => n
adamc@448 960 | DDatabase _ => 0
adamc@448 961
adamc@448 962 and maxNameStr (str, _) =
adamc@448 963 case str of
adamc@448 964 StrConst ds => maxName ds
adamc@448 965 | StrVar n => n
adamc@448 966 | StrProj (str, _) => maxNameStr str
adamc@448 967 | StrFun (_, n, dom, ran, str) => foldl Int.max n [maxNameSgn dom, maxNameSgn ran, maxNameStr str]
adamc@448 968 | StrApp (str1, str2) => Int.max (maxNameStr str1, maxNameStr str2)
adamc@448 969 | StrError => 0
adamc@448 970
adamc@448 971 and maxNameSgn (sgn, _) =
adamc@448 972 case sgn of
adamc@448 973 SgnConst sgis => foldl (fn (sgi, count) => Int.max (maxNameSgi sgi, count)) 0 sgis
adamc@448 974 | SgnVar n => n
adamc@448 975 | SgnFun (_, n, dom, ran) => Int.max (n, Int.max (maxNameSgn dom, maxNameSgn ran))
adamc@448 976 | SgnWhere (sgn, _, _) => maxNameSgn sgn
adamc@448 977 | SgnProj (n, _, _) => n
adamc@448 978 | SgnError => 0
adamc@448 979
adamc@448 980 and maxNameSgi (sgi, _) =
adamc@448 981 case sgi of
adamc@448 982 SgiConAbs (_, n, _) => n
adamc@448 983 | SgiCon (_, n, _, _) => n
adamc@448 984 | SgiDatatype (_, n, _, ns) =>
adamc@448 985 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@448 986 n ns
adamc@448 987 | SgiDatatypeImp (_, n1, n2, _, _, _, ns) =>
adamc@448 988 foldl (fn ((_, n', _), m) => Int.max (n', m))
adamc@448 989 (Int.max (n1, n2)) ns
adamc@448 990 | SgiVal (_, n, _) => n
adamc@448 991 | SgiStr (_, n, sgn) => Int.max (n, maxNameSgn sgn)
adamc@448 992 | SgiSgn (_, n, sgn) => Int.max (n, maxNameSgn sgn)
adamc@448 993 | SgiConstraint _ => 0
adamc@448 994 | SgiTable (n, _, _, _) => n
adamc@448 995 | SgiSequence (n, _, _) => n
adamc@448 996 | SgiClassAbs (_, n) => n
adamc@448 997 | SgiClass (_, n, _) => n
adamc@448 998
adamc@34 999 end
adamc@76 1000
adamc@76 1001 end