summaryrefslogtreecommitdiff
path: root/MLKRoot.m
blob: 0f7afa5f19da2a8eadc3be50680b01693490752a (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
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
/* -*- mode: objc; coding: utf-8 -*- */
/* Toilet Lisp, a Common Lisp subset for the Étoilé runtime.
 * Copyright (C) 2008  Matthias Andreas Benkard.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or (at
 * your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#import "MLKBinaryStreamCharacterStream.h"
#import "MLKBinding.h"
#import "MLKCharacter.h"
#import "MLKCompiledClosure.h"
#import "MLKCons.h"
#import "MLKDynamicContext.h"
#import "MLKInterpretedClosure.h"
#import "MLKInterpreter.h"
#import "MLKLLVMCompiler.h"
#import "MLKNumber.h"
#import "MLKPackage.h"
#import "MLKRoot.h"
#import "MLKStreamStream.h"
#import "MLKSymbol.h"
#import "MLKInteger.h"
#import "MLKSingleFloat.h"
#import "MLKDoubleFloat.h"
#import "NSObject-MLKPrinting.h"
#import "globals.h"
#import "runtime-compatibility.h"
#import "util.h"

#import <Foundation/NSArray.h>
#import <Foundation/NSBundle.h>
#import <Foundation/NSException.h>
#import <Foundation/NSInvocation.h>
#import <Foundation/NSMethodSignature.h>
#import <Foundation/NSNull.h>
#import <Foundation/NSPathUtilities.h>
#import <Foundation/NSStream.h>
#import <Foundation/NSString.h>

#include <alloca.h>


static NSMethodSignature *signature;
static MLKPackage *sys;
static MLKPackage *cl;


static id truify (BOOL value)
{
  return (value ? (id) [cl intern:@"T"] : nil);
}


static id
car (id *_data, id *_multireturn, id cons, id _marker)
{
  return [cons car];
}

static id
cdr (id *_data, id *_multireturn, id cons, id _marker)
{
  return [cons cdr];
}

static id
rplaca (id *_data, id *_multireturn, id cons, id value, id _marker)
{
  [cons setCar:value];
  return cons;
}

static id
rplacd (id *_data, id *_multireturn, id cons, id value, id _marker)
{
  [cons setCdr:value];
  return cons;
}

static id
cons (id *_data, id *_multireturn, id car, id cdr, id _marker)
{
  return [MLKCons cons:car with:cdr];
}

static id
load (id *_data, id *_multireturn, NSString *fileName, id _marker)
{
  BOOL success;
  int l, i;
  NSInputStream *input = [NSInputStream inputStreamWithFileAtPath:fileName];
  MLKBinaryStream *filestream = LAUTORELEASE ([[MLKStreamStream alloc]
                                                initWithInputStream:input]);
  MLKCharacterStream *stream = LAUTORELEASE ([[MLKBinaryStreamCharacterStream alloc]
                                               initWithBinaryStream:filestream]);
  MLKDynamicContext *oldContext = [MLKDynamicContext currentContext];
  int level = MLKIntWithInteger ([oldContext
                                   valueForSymbol:[sys intern:@"*LOAD-LEVEL*"]]);
  MLKDynamicContext *ctx;

  l = [fileName length];

  MLKCharacterStream *ostream = [[MLKDynamicContext currentContext]
                                  valueForSymbol:[cl intern:@"*STANDARD-OUTPUT*"]];

  [ostream writeString:@";\n;  "];
  for (i = 0; i < 68 - 2*level; i++)
    [ostream writeChar:'_'];

  [ostream writeString:@"\n; /"];
  for (i = 0; i < 30 - l/2 - level; i++)
    [ostream writeChar:'-'];
  [ostream writeString:[NSString stringWithFormat:@" LOAD: %s ", [fileName UTF8String]]];
  for (i = 0; i < 30 - (l+1)/2 - level; i++)
    [ostream writeChar:'-'];
  [ostream writeString:@"\n; |\n"];

  //NSLog (@"%d", [input hasBytesAvailable]);
  [input open];
  //NSLog (@"%d", [input hasBytesAvailable]);

  ctx = [[MLKDynamicContext alloc]
          initWithParent:oldContext
          variables:nil
          handlers:nil
          restarts:nil
          catchTags:nil
          activeHandlerEnvironment:nil];
  [ctx addValue:MLKIntegerWithInt(level + 1)
       forSymbol:[sys intern:@"*LOAD-LEVEL*"]];
  [ctx pushContext];

  @try
    {
      success = [MLKInterpreter load:stream verbose:YES print:YES];
    }
  @finally
    {
      [MLKDynamicContext popContext];
      LRELEASE (ctx);
      [input close];
    }

  [ostream writeString:@"; \\"];
  for (i = 0; i < 68 - 2*level; i++)
    [ostream writeChar:'_'];
  [ostream writeString:@"\n; \n"];

  return truify (success);
}

static id
require (id *_data, id *_multireturn, id moduleName, id _marker)
{
  NSLog(@"require...");
  NSBundle *toiletKit = [NSBundle bundleForClass:[MLKRoot class]];
  NSString *path = [[toiletKit resourcePath]
                    stringByAppendingPathComponent:stringify(moduleName)];
  return load (NULL, _multireturn, path, MLKEndOfArgumentsMarker);
}

static id
eq (id *_data, id *_multireturn, id x, id y, id _marker)
{
  return truify (x == y);
}

static id
fixnum_eq (id *_data, id *_multireturn, id x, id y, id _marker)
{
#ifdef NO_FIXNUMS
  return truify ([x isEqual:y]);
#else
  return truify (x == y);
#endif
}

static id
symbolp (id *_data, id *_multireturn, id arg0, id _marker)
{
  return truify (MLKInstanceP(arg0)
                 && (!arg0 || [arg0 isKindOfClass:[MLKSymbol class]]));
}

static id
listp (id *_data, id *_multireturn, id arg0, id _marker)
{
  return truify (MLKInstanceP(arg0)
                 && (!arg0 || [arg0 isKindOfClass:[MLKCons class]]));
}

static id
consp (id *_data, id *_multireturn, id arg0, id _marker)
{
  return truify (MLKInstanceP(arg0)
                 && [arg0 isKindOfClass:[MLKCons class]]);
}

static id
atom (id *_data, id *_multireturn, id arg0, id _marker)
{
  return truify (!MLKInstanceP(arg0)
                 || ![arg0 isKindOfClass:[MLKCons class]]);
}

static id
null (id *_data, id *_multireturn, id arg0, id _marker)
{
  return truify (!arg0);
}

static id
fixnump (id *_data, id *_multireturn, id arg0, id _marker)
{
  return truify (MLKFixnumP(arg0));
}

static id
add (id *_data, id *_multireturn, MLKNumber *x, MLKNumber *y, id _marker)
{
  return [nullify(x) add:nullify(y)];
}

static id
subtract (id *_data, id *_multireturn, MLKNumber *x, MLKNumber *y, id _marker)
{
  return [nullify(x) subtract:nullify(y)];
}

static id
multiply (id *_data, id *_multireturn, MLKNumber *x, MLKNumber *y, id _marker)
{
  return [nullify(x) multiplyWith:nullify(y)];
}

static id
divide (id *_data, id *_multireturn, MLKNumber *x, MLKNumber *y, id _marker)
{
  return [nullify(x) divideBy:nullify(y)];
}

static id
add_fixnums (id *_data, id *_multireturn, id x, id y, id _marker)
{
  return MLKAddFixnums (x, y);
}

static id
subtract_fixnums (id *_data, id *_multireturn, id x, id y, id _marker)
{
  return MLKSubtractFixnums (x, y);
}

static id
idivide_fixnums (id *_data, id *_multireturn, id x, id y, id _marker)
{
  return MLKIDivideFixnums (x, y);
}

static id
multiply_fixnums (id *_data, id *_multireturn, id x, id y, id _marker)
{
  return MLKMultiplyFixnums (x, y);
}

static id
list (id *_data, id *_multireturn, ...)
{
  id arg;
  va_list ap;
  id cons, tail;

  cons = nil;
  tail = nil;
  va_start (ap, _multireturn);

  while ((arg = va_arg(ap, id)) != MLKEndOfArgumentsMarker)
    {
      //NSLog (@"list: Adding stuff (%%p = %p).", arg);
      //NSLog (@"list: Stuff: %p = %@", arg, nullify(arg));
      if (!tail)
        {
          cons = tail = [MLKCons cons:arg with:nil];
        }
      else
        {
          [tail setCdr:[MLKCons cons:arg with:nil]];
          tail = [tail cdr];
        }
    }

  va_end (ap);

  //NSLog (@"list: Done.  Result: %p", cons);
  //NSLog (@"list: %p = %@", cons, cons);
  return cons;
}

#define VA_NEXT(AP, ARG, DEFAULT)                               \
  ((ARG == MLKEndOfArgumentsMarker)                             \
   ? (id)DEFAULT                                                \
   : (id)({ id __tmp = ARG; ARG = va_arg(AP, id); __tmp; }))

static id
macroexpand_1 (id *_data, id *_multireturn, id form, id arg, ...)
{
  va_list ap;

  va_start (ap, arg);
  MLKLexicalContext *context = VA_NEXT (ap, arg, nil);
  id <MLKFuncallable> macrofun = nil;
  va_end (ap);

  if ([form isKindOfClass:[MLKCons class]]
      && (![form car] || [[form car] isKindOfClass:[MLKSymbol class]])
      && [context symbolNamesMacro:[form car]])
    {
      macrofun = [context macroForSymbol:[form car]];
    }
  else if ([form isKindOfClass:[MLKSymbol class]]
           && [context symbolNamesSymbolMacro:form])
    {
      macrofun = [context symbolMacroForSymbol:[form car]];
    }

  if (macrofun)
    {
      form = denullify ([[macrofun applyToArray:
                                     [NSArray arrayWithObjects:
                                                form, context, nil]]
                          objectAtIndex:0]);
    }

  return form;
}

static id
shadow_ (id *_data, id *_multireturn, id symbols, id arg, ...)
{
  va_list ap;

  va_start (ap, arg);
  id package = VA_NEXT (ap, arg, [[MLKDynamicContext currentContext]
                                   valueForSymbol:
                                     [[MLKPackage findPackage:@"COMMON-LISP"]
                                       intern:@"*PACKAGE*"]]);
  va_end (ap);

  if (![symbols isKindOfClass:[MLKCons class]])
    symbols = [MLKCons cons:symbols with:nil];

  do
    {
      [package shadow:stringify([symbols car])];
    }
  while ((symbols = [symbols cdr]));

  return [cl intern:@"T"];
}

static id
export (id *_data, id *_multireturn, id symbols, id arg, ...)
{
  va_list ap;

  va_start (ap, arg);
  id package = VA_NEXT (ap, arg, [[MLKDynamicContext currentContext]
                                   valueForSymbol:
                                     [[MLKPackage findPackage:@"COMMON-LISP"]
                                       intern:@"*PACKAGE*"]]);
  va_end (ap);

  if (![symbols isKindOfClass:[MLKCons class]])
    symbols = [MLKCons cons:symbols with:nil];

  do
    {
      [package export:[symbols car]];
    }
  while ((symbols = [symbols cdr]));

  return [cl intern:@"T"];
}

static id
unexport (id *_data, id *_multireturn, id symbols, id arg, ...)
{
  va_list ap;

  va_start (ap, arg);
  id package = VA_NEXT (ap, arg, [[MLKDynamicContext currentContext]
                                   valueForSymbol:
                                     [[MLKPackage findPackage:@"COMMON-LISP"]
                                       intern:@"*PACKAGE*"]]);
  va_end (ap);

  if (![symbols isKindOfClass:[MLKCons class]])
    symbols = [MLKCons cons:symbols with:nil];

  do
    {
      [package unexport:[symbols car]];
    }
  while ((symbols = [symbols cdr]));

  return [cl intern:@"T"];
}

static id
find_package (id *_data, id *_multireturn, id name, id _marker)
{
  MLKPackage *package = [MLKPackage findPackage:stringify(name)];

  if (package)
    {
      return package;
    }
  else
    {
      [NSException raise:@"MLKNoSuchPackageError"
                   format:@"The package %@ does not exist",
                          MLKPrintToString(name)];
      return nil;
    }
}

static id
string (id *_data, id *_multireturn, id x, id _marker)
{
  return stringify (x);
}

static id
gensym (id *_data, id *_multireturn, id arg, ...)
{
  va_list ap;

  va_start (ap, arg);
  id x = VA_NEXT (ap, arg, @"G");
  va_end (ap);

  NSString *prefix;
  NSString *suffix;
  MLKBinding *gensymCounter = [[MLKDynamicContext currentContext]
                                bindingForSymbol:
                                  [[MLKPackage findPackage:@"COMMON-LISP"]
                                    intern:@"*GENSYM-COUNTER*"]];

  if ([x isKindOfClass:[NSString class]])
    {
      prefix = x;
      suffix = MLKPrintToString([gensymCounter value]);
      [gensymCounter
        setValue:[(MLKInteger*)[gensymCounter value]
                  add:[MLKInteger integerWithInt:1]]];
    }
  else if ([x isKindOfClass:[MLKInteger class]])
    {
      // x must be an integer.
      prefix = @"G";
      suffix = MLKPrintToString(x);
    }
  else
    {
      [NSException raise:@"MLKTypeError"
                   format:@"%@ is not of type (OR INTEGER STRING).", x];
      return nil;
    }

  return [MLKSymbol symbolWithName:
                      [NSString stringWithFormat:@"%@%@", prefix, suffix]
                    package:nil];
}

static id
make_symbol (id *_data, id *_multireturn, id name, id _marker)
{
  return [MLKSymbol symbolWithName:name package:nil];
}

static id
intern (id *_data, id *_multireturn, id name, id arg, ...)
{
  va_list ap;

  va_start (ap, arg);
  id package = VA_NEXT (ap, arg, [[MLKDynamicContext currentContext]
                                   valueForSymbol:
                                     [[MLKPackage findPackage:@"COMMON-LISP"]
                                       intern:@"*PACKAGE*"]]);
  va_end (ap);

  return [package intern:name];
}

static id
import (id *_data, id *_multireturn, id symbol, id arg, ...)
{
  va_list ap;

  va_start (ap, arg);
  id package = VA_NEXT (ap, arg, [[MLKDynamicContext currentContext]
                                   valueForSymbol:
                                     [[MLKPackage findPackage:@"COMMON-LISP"]
                                       intern:@"*PACKAGE*"]]);
  va_end (ap);

  [package import:symbol];

  return [cl intern:@"T"];
}

static id
objc_class_of (id *_data, id *_multireturn, id x, id _marker)
{
  return [x class];
}

static id
objc_subclassp (id *_data, id *_multireturn, id x, id y, id _marker)
{
  return truify ([x isSubclassOfClass:y]);
}

static id
find_objc_class (id *_data, id *_multireturn, id x, id _marker)
{
  return NSClassFromString (x);
}

static id
ns_log (id *_data, id *_multireturn, id x, id _marker)
{
  NSString *description = MLKPrintToString(x);
  NSLog (@"%@", description);
  return x;
}

static id
symbol_name (id *_data, id *_multireturn, id symbol, id _marker)
{
  return (symbol ? (id)[symbol name] : (id)@"NIL");
}

static id
primitive_type_of (id *_data, id *_multireturn, id object, id _marker)
{
  if (!object)
    { return [cl intern:@"NULL"]; }
  else if (MLKFixnumP (object))
    { return [cl intern:@"FIXNUM"]; }
  else if ([object isKindOfClass:[MLKSymbol class]])
    { return [cl intern:@"SYMBOL"]; }
  else if ([object isKindOfClass:[MLKCons class]])
    { return [cl intern:@"CONS"]; }
  else if ([object isKindOfClass:[MLKDoubleFloat class]])
    { return [cl intern:@"DOUBLE-FLOAT"]; }
  else if ([object isKindOfClass:[MLKSingleFloat class]])
    { return [cl intern:@"SINGLE-FLOAT"]; }
  else if ([object isKindOfClass:[MLKInteger class]])
    { return [cl intern:@"INTEGER"]; }
  else if ([object isKindOfClass:[MLKCharacter class]])
    //FIXME: STANDARD-CHAR
    { return [cl intern:@"BASE-CHAR"]; }
  else if ([object isKindOfClass:[MLKInterpretedClosure class]])
    { return [cl intern:@"FUNCTION"]; }
  else if ([object isKindOfClass:[MLKLexicalContext class]])
    { return [sys intern:@"LEXICAL-CONTEXT"]; }
  else if ([object isKindOfClass:[MLKBinding class]])
    { return [sys intern:@"BINDING"]; }
  else if ([object isKindOfClass:[MLKPackage class]])
    { return [cl intern:@"PACKAGE"]; }
  else if ([object isKindOfClass:[MLKBinaryStream class]])
    { return [cl intern:@"BINARY-STREAM"]; }
  else if ([object isKindOfClass:[MLKCharacterStream class]])
    { return [cl intern:@"CHARACTER-STREAM"]; }
  else if ([object isKindOfClass:[NSException class]])
    { return [sys intern:@"EXCEPTION"]; }
  else if ([object isKindOfClass:[NSArray class]])
    { return [cl intern:@"ARRAY"]; }
  else
    { return [cl intern:@"T"]; }
}

static id
send_by_name (id *_data, id *_multireturn, id object, NSString *methodName, id arg, ...)
{
  NSInvocation *invocation;
  SEL selector;
  NSMethodSignature *signature;
  int i;
  MLKForeignType returnType;
  va_list ap;

  if (MLKFixnumP (object))
    object = [MLKInteger integerWithFixnum:object];

  selector = NSSelectorFromString (methodName);
  if (!selector)
    {
      [NSException raise:@"MLKNoSuchSelectorError"
                   format:@"Could not find a selector named %@", methodName];
    }

  signature = [object methodSignatureForSelector:selector];
  if (!signature)
    {
      [NSException raise:@"MLKDoesNotUnderstandError"
                   format:@"%@ does not respond to selector %@", object, methodName];
    }

  invocation = [NSInvocation invocationWithMethodSignature:signature];

  [invocation setSelector:selector];
  [invocation setTarget:object];

  i = 2;
  va_start (ap, arg);
  while (arg != MLKEndOfArgumentsMarker)
    {
      const char *objctype = [signature getArgumentTypeAtIndex:i];
      MLKForeignType type = MLKForeignTypeWithObjectiveCType (objctype);
      ffi_type *ffi_argtype = MLKFFITypeWithForeignType (type);
      void *argbuf = alloca (ffi_argtype->size);

      if (type == MLKT_INVALID)
        [NSException raise:@"MLKInvalidArgumentError"
                     format:@"Don't know how to coerce %@ into type \"%s\".",
                     arg, objctype];

      MLKSetForeignValueWithLispValue (argbuf, arg, type);
      [invocation setArgument:argbuf atIndex:i];

      arg = va_arg (ap, id);
      i++;
    }
  va_end (ap);

  [invocation invoke];


  returnType = MLKForeignTypeWithObjectiveCType ([signature methodReturnType]);

  if (returnType == MLKT_INVALID)
    {
      [NSException raise:@"MLKInvalidReturnTypeError"
                   format:@"Cannot handle an Objective-C return type of \"%s\" \
as provided by method %@ of object %@",
                          methodName, object, [signature methodReturnType]];
      return nil;
    }
  else if (returnType == MLKT_VOID)
    {
      return nil;
    }
  else
    {
      ffi_type *ffi_rettype = MLKFFITypeWithForeignType (returnType);
      void *returnValue = alloca (ffi_rettype->size);
      [invocation getReturnValue:returnValue];
      return MLKLispValueWithForeignValue (returnValue, returnType);
    }
}


static id
declarations_and_doc_and_forms (id *_data, id *_multireturn, id bodyAndDecls, id _marker)
{
  id decls, doc, forms;

  MLKSplitDeclarationsDocAndForms (&decls, &doc, &forms, bodyAndDecls, YES);

  return [MLKCons cons:decls
                  with:[MLKCons cons:doc
                                with:[MLKCons cons:forms with:nil]]];
}


static id
declarations_and_forms (id *_data, id *_multireturn, id bodyAndDecls, id _marker)
{
  id decls, doc, forms;
  
  MLKSplitDeclarationsDocAndForms (&decls, &doc, &forms, bodyAndDecls, NO);
  
  return [MLKCons cons:decls
                  with:[MLKCons cons:forms with:nil]];
}

static id
compile (id *_data, id *_multireturn, id object, id _marker)
{
  if (!MLKDefaultCompiler)
    [NSException raise:@"MLKNotImplementedException"
                 format:@"It seems as though there is no compiler here."];

  //NSLog (@"Compiling lambda form.");
  id thing = [MLKDefaultCompiler compile:object
                                 inContext:[MLKLexicalContext globalContext]];
  //NSLog (@"Compilation done.");
  //NSLog (@"Compiled: %@", thing);
  return thing;
}

static id
fset (id *_data, id *_multireturn, id symbol, id value, id _marker)
{
  [[MLKLexicalContext globalContext] addFunction:symbol];
  [[MLKLexicalEnvironment globalEnvironment] addFunction:value
                                             forSymbol:symbol];

  return value;
}

static id
set (id *_data, id *_multireturn, id symbol, id value, id _marker)
{
  MLKDynamicContext *dynamicContext = [MLKDynamicContext currentContext];

  if ([dynamicContext bindingForSymbol:symbol])
    [dynamicContext setValue:value forSymbol:symbol];
  else
    [[MLKDynamicContext globalContext] addValue:value
                                       forSymbol:symbol];

  return value;
}

static id
macroset (id *_data, id *_multireturn, id symbol, id value, id _marker)
{
  [[MLKLexicalContext globalContext] addMacro:value
                                     forSymbol:symbol];

  return value;
}

static id
apply (id *_data, id *_multireturn, id function, id arglist, id _marker)
{
  // FIXME: Multiple values.

  if (!function || [function isKindOfClass:[MLKSymbol class]])
    {
      function = [[MLKLexicalEnvironment globalEnvironment]
                   functionForSymbol:function];
    }

  NSArray *values = [function applyToArray:(arglist
                                            ? (id)[arglist array]
                                            : (id)[NSArray array])];

  return ([values count] > 0 ? denullify([values objectAtIndex:0]) : nil);
}

static id
eval (id *_data, id *_multireturn, id evaluand, id _marker)
{
  // FIXME: Multiple values.

  NSArray *values = [MLKInterpreter eval:evaluand
                                    inLexicalContext:
                                      [MLKLexicalContext globalContext]
                                    withEnvironment:
                                      [MLKLexicalEnvironment globalEnvironment]];

  return ([values count] > 0 ? denullify([values objectAtIndex:0]) : nil);
}

static void
register_cl (NSString *name, id (*function)())
{
  MLKCompiledClosure *closure = [MLKCompiledClosure closureWithCode:function
                                                               data:NULL
                                                             length:0];
  [[MLKLexicalContext globalContext]
    addFunction:[cl intern:name]];
  [[MLKLexicalEnvironment globalEnvironment]
    addFunction:closure
      forSymbol:[cl intern:name]];
}

static void
register_sys (NSString *name, id (*function)())
{
  MLKCompiledClosure *closure = [MLKCompiledClosure closureWithCode:function
                                                               data:NULL
                                                             length:0];
  [[MLKLexicalContext globalContext]
    addFunction:[sys intern:name]];
  [[MLKLexicalEnvironment globalEnvironment]
    addFunction:closure
      forSymbol:[sys intern:name]]; 
}

@implementation MLKRoot
+(void) initialize
{
  signature = LRETAIN ([self methodSignatureForSelector:@selector(car:)]);
  sys = [MLKPackage findPackage:@"TOILET-SYSTEM"];
  cl = [MLKPackage findPackage:@"COMMON-LISP"];

  register_sys (@"CAR", car);
  register_sys (@"CDR", cdr);
  register_sys (@"RPLACA", rplaca);
  register_sys (@"RPLACD", rplacd);
  register_sys (@"CONS", cons);
  register_sys (@"LOAD", load);
  register_sys (@"REQUIRE", require);
  register_sys (@"EQ", eq);
  register_sys (@"FIXNUM-EQ", fixnum_eq);
  register_sys (@"SYMBOLP", symbolp);
  register_sys (@"LISTP", listp);
  register_sys (@"CONSP", consp);
  register_sys (@"ATOM", atom);
  register_sys (@"NULL", null);
  register_sys (@"FIXNUMP", fixnump);
  register_sys (@"ADD", add);
  register_sys (@"SUBTRACT", subtract);
  register_sys (@"MULTIPLY", multiply);
  register_sys (@"DIVIDE", divide);
  register_sys (@"ADD-FIXNUMS", add_fixnums);
  register_sys (@"SUBTRACT-FIXNUMS", subtract_fixnums);
  register_sys (@"MULTIPLY-FIXNUMS", multiply_fixnums);
  register_sys (@"IDIVIDE-FIXNUMS", idivide_fixnums);
  register_sys (@"LIST", (id (*)())list);
  register_sys (@"MACROEXPAND-1", (id (*)())macroexpand_1);
  register_sys (@"SHADOW", (id (*)())shadow_);
  register_sys (@"EXPORT", (id (*)())export);
  register_sys (@"UNEXPORT", (id (*)())unexport);
  register_sys (@"FIND-PACKAGE", find_package);
  register_sys (@"STRING", string);
  register_sys (@"GENSYM", (id (*)())gensym);
  register_sys (@"MAKE-SYMBOL", make_symbol);
  register_sys (@"INTERN", (id (*)())intern);
  register_sys (@"IMPORT", (id (*)())import);
  register_sys (@"OBJC-CLASS-OF", objc_class_of);
  register_sys (@"OBJC-SUBCLASSP", objc_subclassp);
  register_sys (@"FIND-OBJC-CLASS", find_objc_class);
  register_sys (@"NS-LOG", ns_log);
  register_sys (@"SYMBOL-NAME", symbol_name);
  register_sys (@"PRIMITIVE-TYPE-OF", primitive_type_of);
  register_sys (@"SEND-BY-NAME", (id (*)())send_by_name);
  register_sys (@"DECLARATIONS-AND-DOC-AND-FORMS", declarations_and_doc_and_forms);
  register_sys (@"DECLARATIONS-AND-FORMS", declarations_and_forms);
  register_sys (@"COMPILE", compile);
  register_sys (@"%FSET", fset);
  register_sys (@"SET", set);
  register_sys (@"%MACROSET", macroset);
  register_sys (@"APPLY", apply);
  register_sys (@"EVAL", eval);
}

+(void) registerBuiltins
{
  // Do the real work in +initialize.
}
@end