aboutsummaryrefslogtreecommitdiff
path: root/src/interp/database.boot
blob: 3dbcdb963b83873257631ba60ee02a7dcd4af4ec (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
-- Copyright (c) 1991-2002, The Numerical Algorithms Group Ltd.
-- All rights reserved.
-- Copyright (C) 2007-2012, Gabriel Dos Reis.
-- All rights reserved.
--
-- Redistribution and use in source and binary forms, with or without
-- modification, are permitted provided that the following conditions are
-- met:
--
--     - Redistributions of source code must retain the above copyright
--       notice, this list of conditions and the following disclaimer.
--
--     - Redistributions in binary form must reproduce the above copyright
--       notice, this list of conditions and the following disclaimer in
--       the documentation and/or other materials provided with the
--       distribution.
--
--     - Neither the name of The Numerical Algorithms Group Ltd. nor the
--       names of its contributors may be used to endorse or promote products
--       derived from this software without specific prior written permission.
--
-- THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
-- IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
-- TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
-- PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
-- OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
-- EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
-- PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
-- PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
-- LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
-- NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-- SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.


import nlib
import g_-cndata
import c_-util
import clam
import cattable
import compat
import daase
namespace BOOT

$getUnexposedOperations := true
$globalExposureGroupAlist := []


--% 

pathToDatabase name ==
  if dbdir := systemDatabaseDirectory() then
    path := strconc(dbdir,name)
    if $verbose then
      formatToStdout('"   Using local database ~a..",path)
  else
    path := strconc(systemRootDirectory(),'"algebra/",name)
  path


--%

getConstructorAbbreviationFromDB: %Constructor -> %Symbol
getConstructorAbbreviationFromDB ctor ==
  GETDATABASE(ctor,"ABBREVIATION")

getConstructorCategory: %Constructor -> %Form
getConstructorCategory ctor ==
  getConstructorKindFromDB ctor = 'category =>
    GETDATABASE(ctor,"CONSTRUCTORCATEGORY")
  getConstructorModemap(ctor).mmTarget

getConstructorKindFromDB: %Constructor -> %Maybe %ConstructorKind
getConstructorKindFromDB ctor ==
  GETDATABASE(ctor,"CONSTRUCTORKIND")

getConstructorAncestorsFromDB: %Constructor -> %List %Constructor
getConstructorAncestorsFromDB ctor ==
  GETDATABASE(ctor,"ANCESTORS")

++ return the modemap of the constructor or the instantiation
++ of the constructor `form'. 
getConstructorModemap: %Constructor -> %Mode
getConstructorModemap ctor ==
  GETDATABASE(ctor, 'CONSTRUCTORMODEMAP)
    or dbConstructorModemap loadDBIfNecessary constructorDB ctor

getConstructorFormFromDB: %Constructor -> %Form
getConstructorFormFromDB ctor ==
  GETDATABASE(ctor,"CONSTRUCTORFORM")

++ Return the generic instantiation form of a constructor,
++ where the arguments are the parameters used in its
++ original definition.  Builtin constructors are also handled.
genericInstanceForm form ==
  [op,:args] := form
  builtinConstructor? op => builtinInstanceForm form
  getConstructorFormFromDB op

getConstructorSourceFileFromDB: %Constructor -> %Maybe %String
getConstructorSourceFileFromDB ctor ==
  GETDATABASE(ctor,"SOURCEFILE")

getConstructorModuleFromDB: %Constructor -> %Maybe %String
getConstructorModuleFromDB ctor ==
  GETDATABASE(ctor,"OBJECT")

getConstructorDocumentationFromDB: %Constructor -> %List %Form
getConstructorDocumentationFromDB ctor ==
  GETDATABASE(ctor,"DOCUMENTATION")

getConstructorOperationsFromDB: %Constructor -> %List %List %Form
getConstructorOperationsFromDB ctor ==
  GETDATABASE(ctor,"OPERATIONALIST")

getConstructorFullNameFromDB: %Symbol -> %Constructor
getConstructorFullNameFromDB ctor ==
  GETDATABASE(ctor,"CONSTRUCTOR")

getConstructorArgsFromDB: %Constructor -> %List %Symbol
getConstructorArgsFromDB ctor ==
  GETDATABASE(ctor,"CONSTRUCTORARGS")

++ returns a list of Boolean values indicating whether the 
++ parameter type at the corresponding position is a category.
getDualSignature: %Constructor -> %Form
getDualSignature ctor ==
  db := constructorDB ctor or return nil
  dbDualSignature db or GETDATABASE(ctor,'COSIG)

getConstructorPredicates: %Constructor -> %List %Thing
getConstructorPredicates ctor ==
  db := constructorDB ctor
  dbBeingDefined? db => dbPredicates db
  dbPredicates loadDBIfNecessary db

getConstructorParentsFromDB: %Constructor -> %List %Constructor
getConstructorParentsFromDB ctor ==
  GETDATABASE(ctor,"PARENTS")

getSuperDomainFromDB: %Constructor -> %Form
getSuperDomainFromDB ctor ==
  GETDATABASE(ctor,"SUPERDOMAIN")
  
getConstructorAttributes: %Constructor -> %Form
getConstructorAttributes ctor ==
  dbAttributes loadDBIfNecessary constructorDB ctor

niladicConstructor?: %Constructor -> %Boolean
niladicConstructor? ctor ==
  form := getConstructorFormFromDB ctor => form.args = nil
  false

constructorHasCategoryFromDB: %Pair(%Thing,%Thing) -> %List %Code
constructorHasCategoryFromDB p ==
  GETDATABASE(p,"HASCATEGORY")

getConstructorDefaultFromDB: %Constructor -> %Maybe %Symbol
getConstructorDefaultFromDB ctor ==
  GETDATABASE(ctor,"DEFAULTDOMAIN")

getOperationFromDB: %Symbol -> %List %Sig
getOperationFromDB op ==
  GETDATABASE(op,"OPERATION")

getOperationModemapsFromDB: %Symbol -> %List %Modemap
getOperationModemapsFromDB op ==
  GETDATABASE(op,"MODEMAPS")


getConstructorArity: %Constructor -> %Short
getConstructorArity ctor ==
  sig := getConstructorSignature ctor => #rest sig
  -1

getConstructorKind: %Constructor -> %Maybe %ConstructorKind
getConstructorKind ctor ==
  kind := getConstructorKindFromDB ctor =>
    kind is "domain" and isDefaultPackageName ctor => "package"
    kind
  builtinFunctorName? ctor => "domain"
  builtinCategoryName? ctor => "category"
  nil

categoryConstructor? ctor ==
  getConstructorKindFromDB ctor is "category"
    or builtinCategoryName? ctor

--% Functions for manipulating MODEMAP DATABASE

++ We are about to finish the elaboration of the category `form' with
++ given `body' and `signature'.  Return the list of all modemaps
++ of operators exported by generic instantiation of the category constructor.
++ Note: The structure of the modemaps is that understood by the
++ interpreter, but that of the of the compiler.
modemapsFromCategory(db,form,body,signature) ==
  sl := [["$",:"*1"],:pairList(form.args,rest $PatternVariableList)]
  form := applySubst(sl,form)
  body := applySubst(sl,body)
  signature := applySubst(sl,signature)
  opAlist := applySubst(sl,categoryExports $domainShell) or return nil
  nonCategorySigAlist :=
    mkAlistOfExplicitCategoryOps substitute("*1","$",body)
  catPredList := [['ofCategory,"*1",form],
    :[['ofCategory,a,m] for a in form.args for m in signature.source
       for cat? in dbDualSignature(db).source | cat? ]]
  op := dbConstructor db
  cond :=
    dbImplicitData db is [isubst,icond] =>
      [['%exist,ASSOCRIGHT isubst,applySubst(sl,applySubst(isubst,icond))]]
    nil
  mms := nil
  for (entry:= [[op,sig,:.],pred,sel]) in opAlist |
    listMember?(sig,LASSOC(op,nonCategorySigAlist)) repeat
      pred' := mkpf([pred,:catPredList,:cond],'AND)
      modemap := [["*1",:sig],[pred',sel]]
      mms := [[op,:interactiveModemapForm modemap],:mms]
  mms

++ We are about to finish the elaboration of the generic instantiation
++ of the function `form.op' with `signature'. Return a list of modemaps
++ for operations from `opAlist' explicitly exported by the functor.
++ Note: the structure of modemaps same as for modemapsFromCategory.
modemapsFromFunctor(db,form,opAlist) ==
  f2p := pairList(form.args,rest $PatternVariableList) -- "*1" is for "$"
  form := [.,:argl] := applySubst(f2p,form)
  opAlist := applySubst(f2p,opAlist)
  signature := applySubst(f2p,dbConstructorModemap(db).mmSignature)
  for u in form for v in signature repeat
    if symbolMember?(u,$PatternVariableList) then
      -- we are going to be EVALing categories containing these
      -- pattern variables
      $e := put(u,'mode,v,$e)
  nonCategorySigAlist :=
    mkAlistOfExplicitCategoryOps signature.target or return nil
  catCond :=
    dbImplicitData db is [isubst,icond] =>
      [['%exist,ASSOCRIGHT isubst,applySubst(f2p,applySubst(isubst,icond))]]
    nil
  mms := nil
  for (entry := [[op,sig,:.],pred,sel]) in opAlist |
    or/[listMember?(sig,catSig) for catSig in
      allLASSOCs(op,nonCategorySigAlist)] repeat
        skip :=
          argl ~= nil and CONTAINED("$",sig.source) => 'SKIP
          nil
        patternList := listOfPatternIds sig
        --get relevant predicates
        predList :=
          [[(cat? => 'ofCategory; 'ofType),a,m]
            for a in argl for m in signature.source
              for cat? in dbDualSignature(db).source
                | symbolMember?(a,$PatternVariableList)]
        l := listOfPatternIds predList
        if "OR"/[not symbolMember?(u,l) for u in argl] then
          sayMSG ['"cannot handle modemap for",:bright op,
                          '"by pattern match" ]
          skip := 'SKIP
        modemap := [[form,:substitute(form,"$",sig)],
                     [mkpf([pred,:predList,:catCond],'AND),
                       substitute(form,"$",sel),:skip]]
        mms := [[op,:interactiveModemapForm modemap],:mms]
  mms

rebuildCDT(filemode) ==
  clearConstructorAndLisplibCaches()
  $databaseQueue:local :=nil
  $e: local := $EmptyEnvironment    -- We may need to evaluate Categories
  buildDatabase(filemode,false)
  $IOindex:= 1
  $InteractiveFrame:= $EmptyEnvironment
  0

buildDatabase(filemode,expensive) ==
  $InteractiveMode: local:= true
  $constructorList := nil       --looked at by buildLibdb
  $ConstructorCache:= hashTable 'EQ
  SAY '"Making constructor autoload"
  makeConstructorsAutoLoad()
  SAY '"Building category table"
  genCategoryTable()
  SAY '"Building libdb.text"
  buildLibdb()
  SAY '"splitting libdb.text"
  dbSplitLibdb()
  SAY '"creating browse constructor index"
  dbAugmentConstructorDataTable()
  SAY '"Building browse.lisp"
  buildBrowsedb()
  SAY '"Building constructor users database"
  mkUsersHashTable()
  SAY '"Saving constructor users database"
  saveUsersHashTable()
  SAY '"Building constructor dependents database"
  mkDependentsHashTable()
  SAY '"Saving constructor dependents database"
  saveDependentsHashTable()
  SAY '"Building glossary files"
  buildGloss()

saveUsersHashTable() ==
  _$ERASE('USERS,'DATABASE,'a)
  stream:= writeLib1('USERS,'DATABASE,'a)
  for k in MSORT HKEYS $usersTb repeat
    rwrite(k, tableValue($usersTb, k), stream)
  RSHUT stream

saveDependentsHashTable() ==
  _$ERASE('DEPENDENTS,'DATABASE,'a)
  stream:= writeLib1('DEPENDENTS,'DATABASE,'a)
  for k in MSORT HKEYS $depTb repeat
    rwrite(k, tableValue($depTb, k), stream)
  RSHUT stream

getUsersOfConstructor(con) ==
  stream := readLib1('USERS, 'DATABASE, 'a)
  val := rread(con, stream, nil)
  RSHUT stream
  val

getDependentsOfConstructor(con) ==
  stream := readLib1('DEPENDENTS, 'DATABASE, 'a)
  val := rread(con, stream, nil)
  RSHUT stream
  val

orderPredicateItems(pred1,sig,skip) ==
  pred:= signatureTran pred1
  pred is ["AND",:l] => orderPredTran(l,sig,skip)
  pred

orderPredTran(oldList,sig,skip) ==
  lastPreds := nil
  --(1) make two kinds of predicates appear last:
  -----  (op *target ..) when *target does not appear later in sig
  -----  (isDomain *1 ..)
  for pred in oldList repeat
    ((pred is [op,pvar,.] and op in '(isDomain ofCategory)
       and pvar = sig.target and not symbolMember?(pvar,sig.source)) or
        (not skip and pred is ['isDomain,"*1",.])) =>
          oldList := remove(oldList,pred)
          lastPreds := [pred,:lastPreds]

  --(2a) lastDependList=list of all variables that lastPred forms depend upon
  lastDependList := setUnion/[listOfPatternIds x for x in lastPreds]

  --(2b) dependList=list of all variables that isDom/ofCat forms depend upon
  dependList :=
    setUnion/[listOfPatternIds y for x in oldList |
      x is ['isDomain,.,y] or x is ['ofCategory,.,y]]

  --(3a) newList= list of ofCat/isDom entries that don't depend on
  for x in oldList repeat
    if (x is ['ofCategory,v,body]) or (x is ['isDomain,v,body]) then
      indepvl := listOfPatternIds v
      depvl := listOfPatternIds body
    else
      indepvl := listOfPatternIds x
      depvl := nil
    setIntersection(indepvl,dependList) = nil
        and setIntersection(indepvl,lastDependList) =>
      lastPreds := [:lastPreds,x]
      oldList := remove(oldList,x)

  --(3b) newList= list of ofCat/isDom entries that don't depend on
  while oldList ~= nil repeat
    for x in oldList repeat
      if (x is ['ofCategory,v,body]) or (x is ['isDomain,v,body]) then
        indepvl := listOfPatternIds v
        depvl := listOfPatternIds body
      else
        indepvl := listOfPatternIds x
        depvl := nil
      setIntersection(indepvl,dependList) = nil =>
        dependList := setDifference(dependList,depvl)
        newList := [:newList,x]

  --(4) noldList= what is left over
    (noldList:= setDifference(oldList,newList)) = oldList =>
--    sayMSG '"NOTE: Parameters to domain have circular dependencies"
      newList := [:newList,:oldList]
      return nil
    oldList:=noldList

  for pred in newList repeat
    if pred is ['isDomain,x,y] or x is ['ofCategory,x,y] then
      ids := listOfPatternIds y
      if "and"/[symbolMember?(id,fullDependList) for id in ids] then
        fullDependList := insertWOC(x,fullDependList)
      fullDependList := setUnion(fullDependList,ids)

  newList := [:newList,:lastPreds]

--substitute (isDomain ..) forms as completely as possible to avoid false paths
  newList := isDomainSubst newList
  [['AND,:newList],:setIntersection(fullDependList,sig)]

isDomainSubst u == main where
  main() ==
    u is [head,:tail] =>
      nhead :=
        head is ['isDomain,x,y] => ['isDomain,x,fn(y,tail)]
        head
      [nhead,:isDomainSubst rest u]
    u
  fn(x,alist) ==
    x isnt [.,:.] =>
      ident? x and symbolMember?(x,$PatternVariableList) and (s := findSub(x,alist)) => s
      x
    [first x,:[fn(y,alist) for y in rest x]]
  findSub(x,alist) ==
    null alist => nil
    alist is [['isDomain,y,z],:.] and x = y => z
    findSub(x,rest alist)

signatureTran pred ==
  pred isnt [.,:.] => pred
  pred is ["has",D,catForm] and isCategoryForm(catForm,$e) =>
    ['ofCategory,D,catForm]
  [signatureTran p for p in pred]

interactiveModemapForm mm ==
  --  create modemap form for use by the interpreter.  This function
  --  replaces all specific domains mentioned in the modemap with pattern
  --  variables, and predicates
  mm := replaceVars(copyTree mm,$PatternVariableList,$FormalMapVariableList)
  [pattern := [dc,:sig],pred] := mm
  pred := [fn x for x in pred] where fn x ==
    x is [a,b,c] and a isnt 'isFreeFunction and c isnt [.,:.] => [a,b,[c]]
    x
  [mmpat, patternAlist, partial, patvars] := modemapPattern(pattern,sig)
  [pred,domainPredicateList] := substVars(pred,patternAlist,patvars)
  [pred,:dependList] := 
    fixUpPredicate(pred,domainPredicateList,partial,rest mmpat)
  [cond, :.] := pred
  [mmpat, cond]

modemapPattern(mmPattern,sig) ==
  --  Returns a list of the pattern of a modemap, an Alist of the
  --  substitutions made, a boolean flag indicating whether
  --  the result type is partial, and a list of unused pattern variables
  patternAlist := nil
  mmpat := nil
  patvars := $PatternVariableList
  partial := false
  for xTails in tails mmPattern repeat
    x := first xTails
    if x is ['Union,dom,'"failed"] and xTails=sig then
      x := dom
      partial := true
    patvar := rassoc(x,patternAlist)
    not null patvar => mmpat := [patvar,:mmpat]
    patvar := first patvars
    patvars := rest patvars
    mmpat := [patvar,:mmpat]
    patternAlist := [[patvar,:x],:patternAlist]
  [reverse! mmpat,patternAlist,partial,patvars]

substVars(pred,patternAlist,patternVarList) ==
  --make pattern variable substitutions
  domPreds := nil
  for [[patVar,:value],:.] in tails patternAlist repeat
    pred := MSUBST(patVar,value,pred)
    patternAlist := nsubst(patVar,value,patternAlist)
    domPreds := MSUBST(patVar,value,domPreds)
    if not symbolMember?(value,$FormalMapVariableList) then
      domPreds := [["isDomain",patVar,value],:domPreds]
  everything := [pred,patternAlist,domPreds]
  for var in $FormalMapVariableList repeat
    CONTAINED(var,everything) =>
      replacementVar := first patternVarList
      patternVarList := rest patternVarList
      pred := substitute(replacementVar,var,pred)
      domPreds := substitute(replacementVar,var,domPreds)
  [pred, domPreds]

fixUpPredicate(predClause, domainPreds, partial, sig) ==
  --  merge the predicates in predClause and domainPreds into a
  --  single predicate
  [predicate, fn, :skip] := predClause
  predicates :=
    predicate is true => domainPreds or [predicate]
    predicate is ["AND",:.] => [:domainPreds,:predicate.args]
    [predicate,:domainPreds]
  if #predicates > 1 then
    pred := ["AND",:predicates]
    [pred,:dependList]:=orderPredicateItems(pred,sig,skip)
  else
    pred := orderPredicateItems(first predicates,sig,skip)
    dependList:= if pred is ['isDomain,pvar,[.]] then [pvar] else nil
  pred := moveORsOutside pred
  if partial then pred := ["partial", :pred]
  [[pred, fn, :skip],:dependList]

moveORsOutside p ==
  p is ['AND,:q] =>
    q := [moveORsOutside r for r in q]
    x := or/[r for r in q | r is ['OR,:s]] =>
      moveORsOutside(['OR,:[['AND,:SUBST(t,x,q)] for t in rest x]])
    ['AND,:q]
  p

replaceVars(x,oldvars,newvars) ==
  --  replace every identifier in oldvars with the corresponding
  --  identifier in newvars in the expression x
  for old in oldvars for new in newvars repeat
    x := substitute(new,old,x)
  x

++ Return the list of qualifying predicates of the system modemap `mm'.
getConditionListFromMm mm ==
  [., cond] := mm
  if cond is ["partial", :c] then cond := c
  cond is ["AND", :cl] => cl
  cond is ["OR", ["AND", :cl],:.] => cl  --all cl's should give same info
  [cond]


++ Returns the domain of computation of the modemap `mm'.  This is not
++ to be confused with `getDomainFromMm' below, which can also return
++ a category.
getDCFromSystemModemap mm ==
  or/[dom for cond in getConditionListFromMm mm |
       cond is ["isDomain","*1",dom]]

getDomainFromMm mm ==
  -- Returns the Domain (or package or category) of origin from a pattern
  -- modemap
  val := or/[opOf t for cond in getConditionListFromMm mm |
              cond is ['isDomain,"*1",t] or cond is ['ofCategory,"*1",t]]
  val = nil =>
    keyedSystemError("S2GE0016",
      ['"getDomainFromMm",'"Can't find domain in modemap condition"])
  val

getFirstArgTypeFromMm mm ==
  -- Returns the type of the first argument or nil
  [pats, cond] := mm
  [.,.,:args] := pats
  null args => nil
  arg1 := first args
  if cond is ['partial, :c] then cond := c
  condList :=
    cond is ['AND, :cl] => cl
    cond is ['OR, ['AND, :cl],:.] => cl  --all cl's should give same info
    [cond]
  type := nil
  for condition in condList while not type repeat
      if condition is ['isDomain, a1, dom] and a1=arg1 then type := dom
  type

isFreeFunctionFromMm mm ==
  -- This returns true is the modemap represents a free function, ie,
  -- one not coming from a domain or category.
  [., cond] := mm
  isFreeFunctionFromMmCond cond

isFreeFunctionFromMmCond cond ==
  -- This returns true is the modemap represents a free function, ie,
  -- one not coming from a domain or category.
  if cond is ['partial, :c] then cond := c
  condList :=
    cond is ['AND, :cl] => cl
    cond is ['OR, ['AND, :cl],:.] => cl  --all cl's should give same info
    [cond]
  iff := false
  for condition in condList while not iff repeat
      if condition is ['isFreeFunction, :.] then iff := true
  iff

getAllModemapsFromDatabase(op,nargs) ==
  $getUnexposedOperations: local := true
  try
    startTimingProcess 'diskread
    getSystemModemaps(op,nargs)
  finally stopTimingProcess 'diskread

getModemapsFromDatabase(op,nargs) ==
  $getUnexposedOperations: local := false
  try
    startTimingProcess 'diskread
    getSystemModemaps(op,nargs)
  finally stopTimingProcess 'diskread

getSystemModemaps(op,nargs) ==
  mml := getOperationFromDB op =>
    mms := nil
    for x in mml | not integer? nargs or nargs = #x.mmSource repeat
      $getUnexposedOperations or isFreeFunctionFromMm(x) or
        isExposedConstructor(getDomainFromMm(x)) => mms := [x,:mms]
      'iterate
    mms
  nil

getInCoreModemaps(modemapList,op,nargs) ==
  mml := LASSOC (op,modemapList) =>
    mml := first mml
    [x for x in mml |
      (not integer? nargs or nargs = #x.mmSource) and
        (cfn := abbreviate (domName := getDomainFromMm x)) and
          ($getUnexposedOperations or isExposedConstructor(domName))]
  nil

mkAlistOfExplicitCategoryOps target ==
  if target is ['add,a,:l] then
    target:=a
  target is ['Join,:l] =>
    "union"/[mkAlistOfExplicitCategoryOps cat for cat in l]
  target is ['CATEGORY,.,:l] =>
    l := flattenSignatureList ['PROGN,:l]
    u :=
      [[op,:sig] for x in l | x is ['SIGNATURE,op,sig,:.]]
    opList := removeDuplicates ASSOCLEFT u
    [[x,:fn(x,u)] for x in opList] where
      fn(op,u) ==
        u is [[a,:b],:c] => (a=op => [b,:fn(op,c)]; fn(op,c))
  isCategoryForm(target,$e) => nil
  keyedSystemError("S2GE0016",
    ['"mkAlistOfExplicitCategoryOps",'"bad signature"])

flattenSignatureList(x) ==
  x isnt [.,:.] => nil
  x is ['SIGNATURE,:.] => [x]
  x is ['IF,cond,b1,b2] =>
    [:flattenSignatureList b1,:flattenSignatureList b2]
  x is ['PROGN,:l] =>
     ll:= []
     for x in l repeat
        x is ['SIGNATURE,:.] => ll := [x,:ll]
        ll:= append(flattenSignatureList x,ll)
     ll
  nil

updateDatabase(fname,cname,systemdir?) ==
 -- for now in NRUNTIME do database update only if forced
  not $forceDatabaseUpdate => nil
  -- these modemaps are never needed in the old scheme
  if oldFname := getConstructorAbbreviationFromDB cname then
    clearClams()
    clearAllSlams []
    if dbLoaded? constructorDB cname then
      clearConstructorCaches()
  if $forceDatabaseUpdate or not systemdir? then
    clearClams()
    clearAllSlams []

REMOVER(lst,item) ==
  --destructively removes item from lst
  lst isnt [.,:.] =>
    lst=item => nil
    lst
  first lst=item => rest lst
  RPLNODE(lst,REMOVER(first lst,item),REMOVER(rest lst,item))

allLASSOCs(op,alist) ==
  [value for [key,:value] in alist | key = op]

loadDependents fn ==
  isExistingFile [fn,$spadLibFT,"*"] =>
    "dependents" in RKEYIDS(fn,$spadLibFT) =>
      stream:= readLib1(fn,$spadLibFT,"*")
      l:= rread('dependents,stream,nil)
      RSHUT stream
      for x in l repeat
        x='SubDomain => nil
        loadIfNecessary x

--% Miscellaneous Stuff

getOplistForConstructorForm (form := [op,:argl]) ==
  --  The new form is an op-Alist which has entries (<op> . signature-Alist)
  --    where signature-Alist has entries (<signature> . item)
  --      where item has form (<slotNumber> <condition> <kind>)
  --        where <kind> =  ELT | CONST | Subsumed | (XLAM..) ..
  pairlis := pairList($FormalMapVariableList,argl)
  opAlist := getConstructorOperationsFromDB op
  [:getOplistWithUniqueSignatures(op,pairlis,signatureAlist)
      for [op,:signatureAlist] in opAlist]

getOplistWithUniqueSignatures(op,pairlis,signatureAlist) ==
  alist:= nil
  for [sig,:[slotNumber,pred,kind]] in signatureAlist | kind isnt 'Subsumed repeat
    alist:= insertAlist(applySubst(pairlis,[op,sig]),
                applySubst(pairlis,[pred,[kind,nil,slotNumber]]),
                alist)
  alist

--% Exposure Group Code

dropPrefix(fn) ==
  charMember?(stringChar(fn,0),[char "?",char "-",char "+"]) =>
    subString(fn,1)
  fn

--moved to util.lisp
--++loadExposureGroupData() ==
--++  egFile := ['INTERP,'EXPOSED]
--++--  null MAKE_-INPUT_-FILENAME(egFile) =>
--++--    throwKeyedMsg("S2IL0003",[namestring egFile])
--++  stream:= DEFIOSTREAM(['(MODE . INPUT),['FILE,:egFile]],80,0)
--++  $globalExposureGroupAlist := nil
--++  egName  := nil
--++  egFiles := nil
--++  while (x:= readLine stream) ~= %nothing repeat
--++    x := trimTrailingBlank x
--++    # x = 0 => 'iterate                         -- blank line
--++    (x.0 = char "#") or (x.0 = char "*") => 'iterate    -- comment
--++    x.0 = char " " =>
--++       -- possible exposure group member name and library name
--++       null egName =>
--++     throwKeyedMsg("S2IZ0069A",[namestring egFile,x])
--++       x := dropLeadingBlanks x
--++       -- should be two tokens on the line
--++       p := STRPOS('" ",x,1,nil)
--++       null p =>
--++     throwKeyedMsg("S2IZ0069B",[namestring egFile,x])
--++       n := object2Identifier subString(x,0,p)
--++       x := dropLeadingBlanks subString(x,p+1)
--++       # x = 0 =>
--++     throwKeyedMsg("S2IZ0069B",[namestring egFile,x])
--++       egFiles := [[n,:object2Identifier x],:egFiles]
--++    -- have a new group name
--++    if egName then $globalExposureGroupAlist :=
--++      [[egName,:reverse! egFiles],:$globalExposureGroupAlist]
--++    egFiles := nil
--++    STRPOS('" ",x,1,nil) =>
--++      throwKeyedMsg("S2IZ0069C",[namestring egFile,x])
--++    egName := object2Identifier x
--++  if egFiles then $globalExposureGroupAlist :=
--++      [[egName,:reverse! egFiles],:$globalExposureGroupAlist]
--++  SHUT stream
--++  $globalExposureGroupAlist := reverse! $globalExposureGroupAlist
--++  'done

isExposedConstructor name ==
  -- this function checks the local exposure data in the frame to
  -- see if the given constructor is exposed. The format of
  -- $localExposureData is a vector with
  --   slot 0: list of groups exposed in the frame
  --   slot 1: list of constructors explicitly exposed
  --   slot 2: list of constructors explicitly hidden
  -- check if it is explicitly hidden
  builtinConstructor? name => true
  symbolMember?(name,$localExposureData.2) => false
  -- check if it is explicitly exposed
  symbolMember?(name,$localExposureData.1) => true
  -- check if it is in an exposed group
  found := nil
  for g in $localExposureData.0 while not found repeat
    null (x := GETALIST($globalExposureGroupAlist,g)) => 'iterate
    if GETALIST(x,name) then found := true
  found

displayExposedGroups() ==
  sayKeyedMsg("S2IZ0049A",[$interpreterFrameName])
  if null $localExposureData.0
    then centerAndHighlight '"there are no exposed groups"
    else for g in $localExposureData.0 repeat
      centerAndHighlight g

displayExposedConstructors() ==
  sayKeyedMsg("S2IZ0049B",nil)
  if null $localExposureData.1
    then centerAndHighlight
      '"there are no explicitly exposed constructors"
    else for c in $localExposureData.1 repeat
      centerAndHighlight c

displayHiddenConstructors() ==
  sayKeyedMsg("S2IZ0049C",nil)
  if null $localExposureData.2
    then centerAndHighlight
      '"there are no explicitly hidden constructors"
    else for c in $localExposureData.2 repeat
      centerAndHighlight c

--%
squeezeAll: %List %Code -> %List %Code
squeezeAll x ==
  [SQUEEZE t for t in x]

makeInitialDB [form,kind,abbrev,srcfile] ==
  db := makeDB form.op
  dbConstructorForm(db) := form
  dbConstructorKind(db) := kind
  dbAbbreviation(db) := abbrev
  property(abbrev,'ABBREVIATIONFOR) := form.op
  dbSourceFile(db) := srcfile
  setAutoLoadProperty form.op
  
populateDBFromFile path ==
  try
    dbfile := inputTextFile path
    while (entry := readExpr dbfile) ~= %nothing repeat
      makeInitialDB entry
  finally closeStream dbfile

printInitdbInfo(path,dbfile) == main(path,dbfile) where
  main(path,dbfile) ==
    for x in parseSpadFile path repeat
      x is ['DEF,lhs,:.] => fn(lhs,path,dbfile)
      x is ["where",['DEF,lhs,:.],:.] => fn(lhs,path,dbfile)
  fn(lhs,path,dbfile) ==
    if lhs isnt [.,:.] then lhs := [lhs]
    db := constructorDB lhs.op
    db = nil => nil
    form := [id for x in lhs.args]
              where id() == (x is [":",x',:.] => x'; x)
    form := [lhs.op,:form]
    prettyPrint([form,dbConstructorKind db,dbAbbreviation db,path],dbfile)
    writeNewline dbfile

printAllInitdbInfo(srcdir,dbfile) ==
  paths := DIRECTORY strconc(ensureTrailingSlash srcdir,'"*.spad")
    or coreError strconc('"no .spad file in directory ",srcdir)
  try
    out := outputTextFile dbfile
    for path in paths repeat
      printInitdbInfo(NAMESTRING path,out)
  finally closeStream out

--%

dbLoaded? db ==
  dbLoadPath db ~= nil

loadDBIfNecessary db ==
  ctor := dbConstructor db
  dbLoaded? db => db
  loadDB db

++ Return true if this DB is for a category default package.
macro dbDefaultPackage? db ==
  isDefaultPackageName dbConstructor db