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
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
|
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>Mu - 056shape_shifting_recipe.cc</title>
<meta name="Generator" content="Vim/7.4">
<meta name="plugin-version" content="vim7.4_v2">
<meta name="syntax" content="cpp">
<meta name="settings" content="use_css,pre_wrap,no_foldcolumn,expand_tabs,prevent_copy=">
<meta name="colorscheme" content="minimal">
<style type="text/css">
<!--
pre { white-space: pre-wrap; font-family: monospace; color: #eeeeee; background-color: #080808; }
body { font-size: 12pt; font-family: monospace; color: #eeeeee; background-color: #080808; }
* { font-size: 12pt; font-size: 1em; }
.SalientComment { color: #00ffff; }
.CommentedCode { color: #6c6c6c; }
.muRecipe { color: #ff8700; }
.muData { color: #ffff00; }
.traceContains { color: #008000; }
.Delimiter { color: #800080; }
.Normal { color: #eeeeee; background-color: #080808; padding-bottom: 1px; }
.cSpecial { color: #008000; }
.Comment { color: #9090ff; }
.Constant { color: #00a0a0; }
.Special { color: #c00000; }
.Identifier { color: #fcb165; }
.PreProc { color: #800080; }
-->
</style>
<script type='text/javascript'>
<!--
-->
</script>
</head>
<body>
<pre id='vimCodeElement'>
<span class="SalientComment">//:: Like container definitions, recipes too can contain type parameters.</span>
<span class="Delimiter">:(scenario shape_shifting_recipe)</span>
<span class="muRecipe">def</span> main [
<span class="Constant">10</span>:point<span class="Special"> <- </span>merge <span class="Constant">14</span><span class="Delimiter">,</span> <span class="Constant">15</span>
<span class="Constant">11</span>:point<span class="Special"> <- </span>foo <span class="Constant">10</span>:point
]
<span class="Comment"># non-matching variant</span>
<span class="muRecipe">def</span> foo a:num<span class="muRecipe"> -> </span>result:num [
local-scope
load-ingredients
result<span class="Special"> <- </span>copy <span class="Constant">34</span>
]
<span class="Comment"># matching shape-shifting variant</span>
<span class="muRecipe">def</span> foo a:_t<span class="muRecipe"> -> </span>result:_t [
local-scope
load-ingredients
result<span class="Special"> <- </span>copy a
]
<span class="traceContains">+mem: storing 14 in location 11</span>
<span class="traceContains">+mem: storing 15 in location 12</span>
<span class="Comment">//: Before anything else, disable transforms for shape-shifting recipes and</span>
<span class="Comment">//: make sure we never try to actually run a shape-shifting recipe. We should</span>
<span class="Comment">//: be rewriting such instructions to *specializations* with the type</span>
<span class="Comment">//: ingredients filled in.</span>
<span class="Comment">//: One exception (and this makes things very ugly): we need to expand type</span>
<span class="Comment">//: abbreviations in shape-shifting recipes because we need them types for</span>
<span class="Comment">//: deciding which variant to specialize.</span>
<span class="Delimiter">:(before "End Transform Checks")</span>
r<span class="Delimiter">.</span>transformed_until = t<span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>Transform<span class="Delimiter">.</span>at<span class="Delimiter">(</span>t<span class="Delimiter">)</span> != <span class="Normal">static_cast</span><transform_fn><span class="Delimiter">(</span>expand_type_abbreviations<span class="Delimiter">)</span> && any_type_ingredient_in_header<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">recipe_ordinal</span><span class="Comment">*/</span>p<span class="Delimiter">-></span>first<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Delimiter">:(after "Running One Instruction")</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>calls<span class="Delimiter">.</span>front<span class="Delimiter">().</span>running_step_index == <span class="Constant">0</span>
&& any_type_ingredient_in_header<span class="Delimiter">(</span>Current_routine<span class="Delimiter">-></span>calls<span class="Delimiter">.</span>front<span class="Delimiter">().</span>running_recipe<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span class="CommentedCode">//? DUMP("");</span>
raise << <span class="Constant">"ran into unspecialized shape-shifting recipe "</span> << current_recipe_name<span class="Delimiter">()</span> << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="CommentedCode">//? exit(0);</span>
<span class="Delimiter">}</span>
<span class="Comment">//: Make sure we don't match up literals with type ingredients without</span>
<span class="Comment">//: specialization.</span>
<span class="Delimiter">:(before "End Matching Types For Literal(to)")</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_type_ingredient_name<span class="Delimiter">(</span>to<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Comment">//: save original name of specialized recipes</span>
<span class="Delimiter">:(before "End recipe Fields")</span>
string original_name<span class="Delimiter">;</span>
<span class="Comment">//: original name is only set during load</span>
<span class="Delimiter">:(before "End Load Recipe Name")</span>
result<span class="Delimiter">.</span>original_name = result<span class="Delimiter">.</span>name<span class="Delimiter">;</span>
<span class="Delimiter">:(after "Static Dispatch Phase 3")</span>
candidates = strictly_matching_shape_shifting_variants<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> variants<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!candidates<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
recipe_ordinal exemplar = best_shape_shifting_variant<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> candidates<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9992</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"found variant to specialize: "</span> << exemplar << <span class="Constant">' '</span> << get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> exemplar<span class="Delimiter">).</span>name << end<span class="Delimiter">();</span>
recipe_ordinal new_recipe_ordinal = new_variant<span class="Delimiter">(</span>exemplar<span class="Delimiter">,</span> inst<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>new_recipe_ordinal == <span class="Constant">0</span><span class="Delimiter">)</span> <span class="Identifier">goto</span> skip_shape_shifting_variants<span class="Delimiter">;</span>
variants<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>new_recipe_ordinal<span class="Delimiter">);</span> <span class="Comment">// side-effect</span>
recipe& variant = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> new_recipe_ordinal<span class="Delimiter">);</span>
<span class="Comment">// perform all transforms on the new specialization</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!variant<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Delimiter">{</span>
trace<span class="Delimiter">(</span><span class="Constant">9992</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"transforming new specialization: "</span> << variant<span class="Delimiter">.</span>name << end<span class="Delimiter">();</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> t = <span class="Constant">0</span><span class="Delimiter">;</span> t < SIZE<span class="Delimiter">(</span>Transform<span class="Delimiter">);</span> ++t<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Comment">// one exception: skip tangle, which would have already occurred inside new_variant above</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>Transform<span class="Delimiter">.</span>at<span class="Delimiter">(</span>t<span class="Delimiter">)</span> == <span class="Comment">/*</span><span class="Comment">disambiguate overloading</span><span class="Comment">*/</span><span class="Normal">static_cast</span><transform_fn><span class="Delimiter">(</span>insert_fragments<span class="Delimiter">))</span>
<span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Delimiter">(</span>*Transform<span class="Delimiter">.</span>at<span class="Delimiter">(</span>t<span class="Delimiter">))(</span>new_recipe_ordinal<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
variant<span class="Delimiter">.</span>transformed_until = SIZE<span class="Delimiter">(</span>Transform<span class="Delimiter">)</span>-<span class="Constant">1</span><span class="Delimiter">;</span>
trace<span class="Delimiter">(</span><span class="Constant">9992</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"new specialization: "</span> << variant<span class="Delimiter">.</span>name << end<span class="Delimiter">();</span>
<span class="Identifier">return</span> variant<span class="Delimiter">.</span>name<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">skip_shape_shifting_variants</span>:<span class="Delimiter">;</span>
<span class="Comment">//: make sure we have no unspecialized shape-shifting recipes being called</span>
<span class="Comment">//: before running mu programs</span>
<span class="Delimiter">:(before "End Instruction Operation Checks")</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> inst<span class="Delimiter">.</span>operation<span class="Delimiter">)</span> && inst<span class="Delimiter">.</span>operation >= MAX_PRIMITIVE_RECIPES
&& any_type_ingredient_in_header<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>operation<span class="Delimiter">))</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"instruction '"</span> << inst<span class="Delimiter">.</span>name << <span class="Constant">"' has no valid specialization</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(replace{} "bool types_strictly_match_except_literal_zero_against_address(const reagent& to, const reagent& from)")</span>
<span class="Normal">bool</span> types_strictly_match_except_literal_zero_against_address<span class="Delimiter">(</span><span class="Normal">const</span> reagent& to<span class="Delimiter">,</span> <span class="Normal">const</span> reagent& from<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_literal<span class="Delimiter">(</span>from<span class="Delimiter">)</span> && is_mu_address<span class="Delimiter">(</span>to<span class="Delimiter">))</span>
<span class="Identifier">return</span> from<span class="Delimiter">.</span>name == <span class="Constant">"0"</span> && !contains_type_ingredient_name<span class="Delimiter">(</span>to<span class="Delimiter">);</span>
<span class="Identifier">return</span> types_strictly_match<span class="Delimiter">(</span>to<span class="Delimiter">,</span> from<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(code)</span>
<span class="Comment">// phase 2 of static dispatch</span>
vector<recipe_ordinal> strictly_matching_shape_shifting_variants<span class="Delimiter">(</span><span class="Normal">const</span> instruction& inst<span class="Delimiter">,</span> vector<recipe_ordinal>& variants<span class="Delimiter">)</span> <span class="Delimiter">{</span>
vector<recipe_ordinal> result<span class="Delimiter">;</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>variants<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>variants<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)</span> == -<span class="Constant">1</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!any_type_ingredient_in_header<span class="Delimiter">(</span>variants<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!all_concrete_header_reagents_strictly_match<span class="Delimiter">(</span>inst<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> variants<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">))))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
result<span class="Delimiter">.</span>push_back<span class="Delimiter">(</span>variants<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
<span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> all_concrete_header_reagents_strictly_match<span class="Delimiter">(</span><span class="Normal">const</span> instruction& inst<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& variant<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < min<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">),</span> SIZE<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>ingredients<span class="Delimiter">));</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!concrete_type_names_strictly_match<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span> <span class="Delimiter">{</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"concrete-type match failed: ingredient "</span> << i << end<span class="Delimiter">();</span>
<span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < min<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">),</span> SIZE<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>ingredients<span class="Delimiter">));</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_dummy<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!concrete_type_names_strictly_match<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span> <span class="Delimiter">{</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"strict match failed: product "</span> << i << end<span class="Delimiter">();</span>
<span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Comment">// tie-breaker for phase 2</span>
recipe_ordinal best_shape_shifting_variant<span class="Delimiter">(</span><span class="Normal">const</span> instruction& inst<span class="Delimiter">,</span> vector<recipe_ordinal>& candidates<span class="Delimiter">)</span> <span class="Delimiter">{</span>
assert<span class="Delimiter">(</span>!candidates<span class="Delimiter">.</span>empty<span class="Delimiter">());</span>
<span class="Comment">// primary score</span>
<span class="Normal">int</span> max_score = -<span class="Constant">1</span><span class="Delimiter">;</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>candidates<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">int</span> score = number_of_concrete_type_names<span class="Delimiter">(</span>candidates<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
assert<span class="Delimiter">(</span>score > -<span class="Constant">1</span><span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>score > max_score<span class="Delimiter">)</span> max_score = score<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Comment">// break any ties at max_score by a secondary score</span>
<span class="Normal">int</span> min_score2 = <span class="Constant">999</span><span class="Delimiter">;</span>
<span class="Normal">int</span> best_index = <span class="Constant">0</span><span class="Delimiter">;</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>candidates<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">int</span> score1 = number_of_concrete_type_names<span class="Delimiter">(</span>candidates<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
assert<span class="Delimiter">(</span>score1 <= max_score<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>score1 != max_score<span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
<span class="Normal">const</span> recipe& candidate = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> candidates<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span class="Normal">int</span> score2 = <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>candidate<span class="Delimiter">.</span>products<span class="Delimiter">)</span>-SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">))</span>
+ <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">)</span>-SIZE<span class="Delimiter">(</span>candidate<span class="Delimiter">.</span>ingredients<span class="Delimiter">));</span>
assert<span class="Delimiter">(</span>score2 < <span class="Constant">999</span><span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>score2 < min_score2<span class="Delimiter">)</span> <span class="Delimiter">{</span>
min_score2 = score2<span class="Delimiter">;</span>
best_index = i<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Identifier">return</span> candidates<span class="Delimiter">.</span>at<span class="Delimiter">(</span>best_index<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> any_type_ingredient_in_header<span class="Delimiter">(</span>recipe_ordinal variant<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">const</span> recipe& caller = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> variant<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_type_ingredient_name<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span>
<span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_type_ingredient_name<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">)))</span>
<span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> concrete_type_names_strictly_match<span class="Delimiter">(</span>reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> to<span class="Delimiter">,</span> reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> from<span class="Delimiter">)</span> <span class="Delimiter">{</span>
canonize_type<span class="Delimiter">(</span>to<span class="Delimiter">);</span>
canonize_type<span class="Delimiter">(</span>from<span class="Delimiter">);</span>
<span class="Identifier">return</span> concrete_type_names_strictly_match<span class="Delimiter">(</span>to<span class="Delimiter">.</span>type<span class="Delimiter">,</span> from<span class="Delimiter">.</span>type<span class="Delimiter">,</span> from<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">int</span> number_of_concrete_type_names<span class="Delimiter">(</span>recipe_ordinal r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">const</span> recipe& caller = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> r<span class="Delimiter">);</span>
<span class="Normal">int</span> result = <span class="Constant">0</span><span class="Delimiter">;</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
result += number_of_concrete_type_names<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
result += number_of_concrete_type_names<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">));</span>
<span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">int</span> number_of_concrete_type_names<span class="Delimiter">(</span><span class="Normal">const</span> reagent& r<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Identifier">return</span> number_of_concrete_type_names<span class="Delimiter">(</span>r<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">int</span> number_of_concrete_type_names<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>type<span class="Delimiter">-></span>atom<span class="Delimiter">)</span>
<span class="Identifier">return</span> is_type_ingredient_name<span class="Delimiter">(</span>type<span class="Delimiter">-></span>name<span class="Delimiter">)</span> ? <span class="Constant">0</span> : <span class="Constant">1</span><span class="Delimiter">;</span>
<span class="Identifier">return</span> number_of_concrete_type_names<span class="Delimiter">(</span>type<span class="Delimiter">-></span>left<span class="Delimiter">)</span>
+ number_of_concrete_type_names<span class="Delimiter">(</span>type<span class="Delimiter">-></span>right<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> concrete_type_names_strictly_match<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* to<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree* from<span class="Delimiter">,</span> <span class="Normal">const</span> reagent& rhs_reagent<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!to<span class="Delimiter">)</span> <span class="Identifier">return</span> !from<span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!from<span class="Delimiter">)</span> <span class="Identifier">return</span> !to<span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>to<span class="Delimiter">-></span>atom && is_type_ingredient_name<span class="Delimiter">(</span>to<span class="Delimiter">-></span>name<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span> <span class="Comment">// type ingredient matches anything</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>from<span class="Delimiter">-></span>atom && is_mu_address<span class="Delimiter">(</span>to<span class="Delimiter">))</span>
<span class="Identifier">return</span> from<span class="Delimiter">-></span>name == <span class="Constant">"literal"</span> && rhs_reagent<span class="Delimiter">.</span>name == <span class="Constant">"0"</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!from<span class="Delimiter">-></span>atom && !to<span class="Delimiter">-></span>atom<span class="Delimiter">)</span>
<span class="Identifier">return</span> concrete_type_names_strictly_match<span class="Delimiter">(</span>to<span class="Delimiter">-></span>left<span class="Delimiter">,</span> from<span class="Delimiter">-></span>left<span class="Delimiter">,</span> rhs_reagent<span class="Delimiter">)</span>
&& concrete_type_names_strictly_match<span class="Delimiter">(</span>to<span class="Delimiter">-></span>right<span class="Delimiter">,</span> from<span class="Delimiter">-></span>right<span class="Delimiter">,</span> rhs_reagent<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>from<span class="Delimiter">-></span>atom != to<span class="Delimiter">-></span>atom<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Comment">// both from and to are atoms</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>from<span class="Delimiter">-></span>name == <span class="Constant">"literal"</span><span class="Delimiter">)</span>
<span class="Identifier">return</span> Literal_type_names<span class="Delimiter">.</span>find<span class="Delimiter">(</span>to<span class="Delimiter">-></span>name<span class="Delimiter">)</span> != Literal_type_names<span class="Delimiter">.</span>end<span class="Delimiter">();</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>to<span class="Delimiter">-></span>name == <span class="Constant">"literal"</span><span class="Delimiter">)</span>
<span class="Identifier">return</span> Literal_type_names<span class="Delimiter">.</span>find<span class="Delimiter">(</span>from<span class="Delimiter">-></span>name<span class="Delimiter">)</span> != Literal_type_names<span class="Delimiter">.</span>end<span class="Delimiter">();</span>
<span class="Identifier">return</span> to<span class="Delimiter">-></span>name == from<span class="Delimiter">-></span>name<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> contains_type_ingredient_name<span class="Delimiter">(</span><span class="Normal">const</span> reagent& x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Identifier">return</span> contains_type_ingredient_name<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">bool</span> contains_type_ingredient_name<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">false</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_type_ingredient_name<span class="Delimiter">(</span>type<span class="Delimiter">-></span>name<span class="Delimiter">))</span> <span class="Identifier">return</span> <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Identifier">return</span> contains_type_ingredient_name<span class="Delimiter">(</span>type<span class="Delimiter">-></span>left<span class="Delimiter">)</span> || contains_type_ingredient_name<span class="Delimiter">(</span>type<span class="Delimiter">-></span>right<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
recipe_ordinal new_variant<span class="Delimiter">(</span>recipe_ordinal exemplar<span class="Delimiter">,</span> <span class="Normal">const</span> instruction& inst<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& caller_recipe<span class="Delimiter">)</span> <span class="Delimiter">{</span>
string new_name = next_unused_recipe_name<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name<span class="Delimiter">);</span>
assert<span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> new_name<span class="Delimiter">));</span>
recipe_ordinal new_recipe_ordinal = put<span class="Delimiter">(</span>Recipe_ordinal<span class="Delimiter">,</span> new_name<span class="Delimiter">,</span> Next_recipe_ordinal++<span class="Delimiter">);</span>
<span class="Comment">// make a copy</span>
assert<span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> exemplar<span class="Delimiter">));</span>
assert<span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> new_recipe_ordinal<span class="Delimiter">));</span>
recipe new_recipe = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> exemplar<span class="Delimiter">);</span>
new_recipe<span class="Delimiter">.</span>name = new_name<span class="Delimiter">;</span>
new_recipe<span class="Delimiter">.</span>is_autogenerated = <span class="Constant">true</span><span class="Delimiter">;</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"switching "</span> << inst<span class="Delimiter">.</span>name << <span class="Constant">" to specialized "</span> << header_label<span class="Delimiter">(</span>new_recipe<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Comment">// Replace type ingredients with concrete types in new_recipe.</span>
<span class="Comment">//</span>
<span class="Comment">// preprocessing: micro-manage a couple of transforms</span>
<span class="Comment">// a) perform tangle *before* replacing type ingredients, just in case</span>
<span class="Comment">// inserted code involves type ingredients</span>
insert_fragments<span class="Delimiter">(</span>new_recipe<span class="Delimiter">);</span>
<span class="Comment">// b) do the work of check_or_set_types_by_name (and its prerequisites)</span>
<span class="Comment">// while supporting type-ingredients</span>
expand_type_abbreviations<span class="Delimiter">(</span>new_recipe<span class="Delimiter">);</span>
compute_type_names<span class="Delimiter">(</span>new_recipe<span class="Delimiter">);</span>
<span class="Comment">// that gives enough information to replace type-ingredients with concrete types</span>
<span class="Delimiter">{</span>
map<string<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree*> mappings<span class="Delimiter">;</span>
<span class="Normal">bool</span> error = <span class="Constant">false</span><span class="Delimiter">;</span>
compute_type_ingredient_mappings<span class="Delimiter">(</span>get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> exemplar<span class="Delimiter">),</span> inst<span class="Delimiter">,</span> mappings<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">,</span> &error<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!error<span class="Delimiter">)</span> error = <span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>mappings<span class="Delimiter">)</span> != type_ingredient_count_in_header<span class="Delimiter">(</span>exemplar<span class="Delimiter">));</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!error<span class="Delimiter">)</span> replace_type_ingredients<span class="Delimiter">(</span>new_recipe<span class="Delimiter">,</span> mappings<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span>map<string<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree*>::iterator p = mappings<span class="Delimiter">.</span>begin<span class="Delimiter">();</span> p != mappings<span class="Delimiter">.</span>end<span class="Delimiter">();</span> ++p<span class="Delimiter">)</span>
<span class="Normal">delete</span> p<span class="Delimiter">-></span>second<span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>error<span class="Delimiter">)</span> <span class="Identifier">return</span> <span class="Constant">0</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
ensure_all_concrete_types<span class="Delimiter">(</span>new_recipe<span class="Delimiter">,</span> get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> exemplar<span class="Delimiter">));</span>
put<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> new_recipe_ordinal<span class="Delimiter">,</span> new_recipe<span class="Delimiter">);</span>
<span class="Identifier">return</span> new_recipe_ordinal<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> compute_type_names<span class="Delimiter">(</span>recipe& variant<span class="Delimiter">)</span> <span class="Delimiter">{</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"-- compute type names: "</span> << variant<span class="Delimiter">.</span>name << end<span class="Delimiter">();</span>
map<string<span class="Delimiter">,</span> type_tree*> type_names<span class="Delimiter">;</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
save_or_deduce_type_name<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> type_names<span class="Delimiter">,</span> variant<span class="Delimiter">,</span> <span class="Constant">""</span><span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
save_or_deduce_type_name<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> type_names<span class="Delimiter">,</span> variant<span class="Delimiter">,</span> <span class="Constant">""</span><span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
instruction& inst = variant<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">" instruction: "</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> in = <span class="Constant">0</span><span class="Delimiter">;</span> in < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++in<span class="Delimiter">)</span>
save_or_deduce_type_name<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>in<span class="Delimiter">),</span> type_names<span class="Delimiter">,</span> variant<span class="Delimiter">,</span> <span class="Constant">" in '"</span> + inst<span class="Delimiter">.</span>original_string + <span class="Constant">"'"</span><span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> out = <span class="Constant">0</span><span class="Delimiter">;</span> out < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++out<span class="Delimiter">)</span>
save_or_deduce_type_name<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>out<span class="Delimiter">),</span> type_names<span class="Delimiter">,</span> variant<span class="Delimiter">,</span> <span class="Constant">" in '"</span> + inst<span class="Delimiter">.</span>original_string + <span class="Constant">"'"</span><span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> save_or_deduce_type_name<span class="Delimiter">(</span>reagent& x<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> type_tree*>& type<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& variant<span class="Delimiter">,</span> <span class="Normal">const</span> string& context<span class="Delimiter">)</span> <span class="Delimiter">{</span>
trace<span class="Delimiter">(</span><span class="Constant">9994</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">" checking "</span> << to_string<span class="Delimiter">(</span>x<span class="Delimiter">)</span> << <span class="Constant">": "</span> << names_to_string<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type && contains_key<span class="Delimiter">(</span>type<span class="Delimiter">,</span> x<span class="Delimiter">.</span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
x<span class="Delimiter">.</span>type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*get<span class="Delimiter">(</span>type<span class="Delimiter">,</span> x<span class="Delimiter">.</span>name<span class="Delimiter">));</span>
trace<span class="Delimiter">(</span><span class="Constant">9994</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">" deducing type to "</span> << names_to_string<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>variant<span class="Delimiter">.</span>original_name<span class="Delimiter">)</span> << <span class="Constant">"unknown type for '"</span> << x<span class="Delimiter">.</span>original_string << <span class="Constant">"'"</span> << context << <span class="Constant">" (check the name for typos)</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>type<span class="Delimiter">,</span> x<span class="Delimiter">.</span>name<span class="Delimiter">))</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>name == <span class="Constant">"offset"</span> || x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>name == <span class="Constant">"variant"</span><span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span> <span class="Comment">// special-case for container-access instructions</span>
put<span class="Delimiter">(</span>type<span class="Delimiter">,</span> x<span class="Delimiter">.</span>name<span class="Delimiter">,</span> x<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"type of '"</span> << x<span class="Delimiter">.</span>name << <span class="Constant">"' is "</span> << names_to_string<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> compute_type_ingredient_mappings<span class="Delimiter">(</span><span class="Normal">const</span> recipe& exemplar<span class="Delimiter">,</span> <span class="Normal">const</span> instruction& inst<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree*>& mappings<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& caller_recipe<span class="Delimiter">,</span> <span class="Normal">bool</span>* error<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">int</span> limit = min<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">),</span> SIZE<span class="Delimiter">(</span>exemplar<span class="Delimiter">.</span>ingredients<span class="Delimiter">));</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < limit<span class="Delimiter">;</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">const</span> reagent& exemplar_reagent = exemplar<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> ingredient = inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
canonize_type<span class="Delimiter">(</span>ingredient<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_mu_address<span class="Delimiter">(</span>exemplar_reagent<span class="Delimiter">)</span> && ingredient<span class="Delimiter">.</span>name == <span class="Constant">"0"</span><span class="Delimiter">)</span> <span class="Identifier">continue</span><span class="Delimiter">;</span> <span class="Comment">// assume it matches</span>
accumulate_type_ingredients<span class="Delimiter">(</span>exemplar_reagent<span class="Delimiter">,</span> ingredient<span class="Delimiter">,</span> mappings<span class="Delimiter">,</span> exemplar<span class="Delimiter">,</span> inst<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">,</span> error<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
limit = min<span class="Delimiter">(</span>SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">),</span> SIZE<span class="Delimiter">(</span>exemplar<span class="Delimiter">.</span>products<span class="Delimiter">));</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < limit<span class="Delimiter">;</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">const</span> reagent& exemplar_reagent = exemplar<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
reagent<span class="Comment">/*</span><span class="Comment">copy</span><span class="Comment">*/</span> product = inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_dummy<span class="Delimiter">(</span>product<span class="Delimiter">))</span> <span class="Identifier">continue</span><span class="Delimiter">;</span>
canonize_type<span class="Delimiter">(</span>product<span class="Delimiter">);</span>
accumulate_type_ingredients<span class="Delimiter">(</span>exemplar_reagent<span class="Delimiter">,</span> product<span class="Delimiter">,</span> mappings<span class="Delimiter">,</span> exemplar<span class="Delimiter">,</span> inst<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">,</span> error<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> accumulate_type_ingredients<span class="Delimiter">(</span><span class="Normal">const</span> reagent& exemplar_reagent<span class="Delimiter">,</span> reagent& refinement<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree*>& mappings<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& exemplar<span class="Delimiter">,</span> <span class="Normal">const</span> instruction& call_instruction<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& caller_recipe<span class="Delimiter">,</span> <span class="Normal">bool</span>* error<span class="Delimiter">)</span> <span class="Delimiter">{</span>
assert<span class="Delimiter">(</span>refinement<span class="Delimiter">.</span>type<span class="Delimiter">);</span>
accumulate_type_ingredients<span class="Delimiter">(</span>exemplar_reagent<span class="Delimiter">.</span>type<span class="Delimiter">,</span> refinement<span class="Delimiter">.</span>type<span class="Delimiter">,</span> mappings<span class="Delimiter">,</span> exemplar<span class="Delimiter">,</span> exemplar_reagent<span class="Delimiter">,</span> call_instruction<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">,</span> error<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> accumulate_type_ingredients<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* exemplar_type<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree* refinement_type<span class="Delimiter">,</span> map<string<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree*>& mappings<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& exemplar<span class="Delimiter">,</span> <span class="Normal">const</span> reagent& exemplar_reagent<span class="Delimiter">,</span> <span class="Normal">const</span> instruction& call_instruction<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& caller_recipe<span class="Delimiter">,</span> <span class="Normal">bool</span>* error<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!exemplar_type<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!refinement_type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Comment">// todo: make this smarter; only flag an error if exemplar_type contains some *new* type ingredient</span>
raise << maybe<span class="Delimiter">(</span>exemplar<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"missing type ingredient for "</span> << exemplar_reagent<span class="Delimiter">.</span>original_string << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
raise << <span class="Constant">" (called from '"</span> << to_original_string<span class="Delimiter">(</span>call_instruction<span class="Delimiter">)</span> << <span class="Constant">"')</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_type_ingredient_name<span class="Delimiter">(</span>exemplar_type<span class="Delimiter">-></span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span class="Normal">const</span> type_tree* curr_refinement_type = <span class="Constant">NULL</span><span class="Delimiter">;</span> <span class="Comment">// temporary heap allocation; must always be deleted before it goes out of scope</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>exemplar_type<span class="Delimiter">-></span>atom<span class="Delimiter">)</span>
curr_refinement_type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*refinement_type<span class="Delimiter">);</span>
<span class="Normal">else</span> <span class="Delimiter">{</span>
assert<span class="Delimiter">(</span>!refinement_type<span class="Delimiter">-></span>atom<span class="Delimiter">);</span>
curr_refinement_type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*refinement_type<span class="Delimiter">-></span>left<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>mappings<span class="Delimiter">,</span> exemplar_type<span class="Delimiter">-></span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"adding mapping from "</span> << exemplar_type<span class="Delimiter">-></span>name << <span class="Constant">" to "</span> << to_string<span class="Delimiter">(</span>curr_refinement_type<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
put<span class="Delimiter">(</span>mappings<span class="Delimiter">,</span> exemplar_type<span class="Delimiter">-></span>name<span class="Delimiter">,</span> <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*curr_refinement_type<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
<span class="Normal">else</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!deeply_equal_type_names<span class="Delimiter">(</span>get<span class="Delimiter">(</span>mappings<span class="Delimiter">,</span> exemplar_type<span class="Delimiter">-></span>name<span class="Delimiter">),</span> curr_refinement_type<span class="Delimiter">))</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>caller_recipe<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"no call found for '"</span> << to_original_string<span class="Delimiter">(</span>call_instruction<span class="Delimiter">)</span> << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
*error = <span class="Constant">true</span><span class="Delimiter">;</span>
<span class="Normal">delete</span> curr_refinement_type<span class="Delimiter">;</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>get<span class="Delimiter">(</span>mappings<span class="Delimiter">,</span> exemplar_type<span class="Delimiter">-></span>name<span class="Delimiter">)-></span>name == <span class="Constant">"literal"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">delete</span> get<span class="Delimiter">(</span>mappings<span class="Delimiter">,</span> exemplar_type<span class="Delimiter">-></span>name<span class="Delimiter">);</span>
put<span class="Delimiter">(</span>mappings<span class="Delimiter">,</span> exemplar_type<span class="Delimiter">-></span>name<span class="Delimiter">,</span> <span class="Normal">new</span> type_tree<span class="Delimiter">(</span>*curr_refinement_type<span class="Delimiter">));</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">delete</span> curr_refinement_type<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">else</span> <span class="Delimiter">{</span>
accumulate_type_ingredients<span class="Delimiter">(</span>exemplar_type<span class="Delimiter">-></span>left<span class="Delimiter">,</span> refinement_type<span class="Delimiter">-></span>left<span class="Delimiter">,</span> mappings<span class="Delimiter">,</span> exemplar<span class="Delimiter">,</span> exemplar_reagent<span class="Delimiter">,</span> call_instruction<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">,</span> error<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
accumulate_type_ingredients<span class="Delimiter">(</span>exemplar_type<span class="Delimiter">-></span>right<span class="Delimiter">,</span> refinement_type<span class="Delimiter">-></span>right<span class="Delimiter">,</span> mappings<span class="Delimiter">,</span> exemplar<span class="Delimiter">,</span> exemplar_reagent<span class="Delimiter">,</span> call_instruction<span class="Delimiter">,</span> caller_recipe<span class="Delimiter">,</span> error<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> replace_type_ingredients<span class="Delimiter">(</span>recipe& new_recipe<span class="Delimiter">,</span> <span class="Normal">const</span> map<string<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree*>& mappings<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Comment">// update its header</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>mappings<span class="Delimiter">.</span>empty<span class="Delimiter">())</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"replacing in recipe header ingredients"</span> << end<span class="Delimiter">();</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
replace_type_ingredients<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> mappings<span class="Delimiter">,</span> new_recipe<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"replacing in recipe header products"</span> << end<span class="Delimiter">();</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
replace_type_ingredients<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> mappings<span class="Delimiter">,</span> new_recipe<span class="Delimiter">);</span>
<span class="Comment">// update its body</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
instruction& inst = new_recipe<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"replacing in instruction '"</span> << to_string<span class="Delimiter">(</span>inst<span class="Delimiter">)</span> << <span class="Constant">"'"</span> << end<span class="Delimiter">();</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span>
replace_type_ingredients<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">),</span> mappings<span class="Delimiter">,</span> new_recipe<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span>
replace_type_ingredients<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">),</span> mappings<span class="Delimiter">,</span> new_recipe<span class="Delimiter">);</span>
<span class="Comment">// special-case for new: replace type ingredient in first ingredient *value*</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>inst<span class="Delimiter">.</span>name == <span class="Constant">"new"</span> && inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>type<span class="Delimiter">-></span>name != <span class="Constant">"literal-string"</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
type_tree* type = parse_type_tree<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name<span class="Delimiter">);</span>
replace_type_ingredients<span class="Delimiter">(</span>type<span class="Delimiter">,</span> mappings<span class="Delimiter">);</span>
inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span><span class="Constant">0</span><span class="Delimiter">).</span>name = inspect<span class="Delimiter">(</span>type<span class="Delimiter">);</span>
<span class="Normal">delete</span> type<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> replace_type_ingredients<span class="Delimiter">(</span>reagent& x<span class="Delimiter">,</span> <span class="Normal">const</span> map<string<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree*>& mappings<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& caller<span class="Delimiter">)</span> <span class="Delimiter">{</span>
string before = to_string<span class="Delimiter">(</span>x<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"replacing in ingredient "</span> << x<span class="Delimiter">.</span>original_string << end<span class="Delimiter">();</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << <span class="Constant">"specializing "</span> << caller<span class="Delimiter">.</span>original_name << <span class="Constant">": missing type for '"</span> << x<span class="Delimiter">.</span>original_string << <span class="Constant">"'</span><span class="cSpecial">\n</span><span class="Constant">"</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
replace_type_ingredients<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">,</span> mappings<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> replace_type_ingredients<span class="Delimiter">(</span>type_tree* type<span class="Delimiter">,</span> <span class="Normal">const</span> map<string<span class="Delimiter">,</span> <span class="Normal">const</span> type_tree*>& mappings<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">-></span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span>
replace_type_ingredients<span class="Delimiter">(</span>type<span class="Delimiter">-></span>left<span class="Delimiter">,</span> mappings<span class="Delimiter">);</span>
replace_type_ingredients<span class="Delimiter">(</span>type<span class="Delimiter">-></span>right<span class="Delimiter">,</span> mappings<span class="Delimiter">);</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>contains_key<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> type<span class="Delimiter">-></span>name<span class="Delimiter">))</span> <span class="Comment">// todo: ugly side effect</span>
type<span class="Delimiter">-></span>value = get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> type<span class="Delimiter">-></span>name<span class="Delimiter">);</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>mappings<span class="Delimiter">,</span> type<span class="Delimiter">-></span>name<span class="Delimiter">))</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Normal">const</span> type_tree* replacement = get<span class="Delimiter">(</span>mappings<span class="Delimiter">,</span> type<span class="Delimiter">-></span>name<span class="Delimiter">);</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << type<span class="Delimiter">-></span>name << <span class="Constant">" => "</span> << names_to_string<span class="Delimiter">(</span>replacement<span class="Delimiter">)</span> << end<span class="Delimiter">();</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>replacement<span class="Delimiter">-></span>atom<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!contains_key<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> replacement<span class="Delimiter">-></span>name<span class="Delimiter">))</span> <span class="Delimiter">{</span>
<span class="Comment">// error in program; should be reported elsewhere</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
type<span class="Delimiter">-></span>name = <span class="Delimiter">(</span>replacement<span class="Delimiter">-></span>name == <span class="Constant">"literal"</span><span class="Delimiter">)</span> ? <span class="Constant">"number"</span> : replacement<span class="Delimiter">-></span>name<span class="Delimiter">;</span>
type<span class="Delimiter">-></span>value = get<span class="Delimiter">(</span>Type_ordinal<span class="Delimiter">,</span> type<span class="Delimiter">-></span>name<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">else</span> <span class="Delimiter">{</span>
*type = *replacement<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">int</span> type_ingredient_count_in_header<span class="Delimiter">(</span>recipe_ordinal variant<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">const</span> recipe& caller = get<span class="Delimiter">(</span>Recipe<span class="Delimiter">,</span> variant<span class="Delimiter">);</span>
set<string> type_ingredients<span class="Delimiter">;</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
accumulate_type_ingredients<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>type<span class="Delimiter">,</span> type_ingredients<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
accumulate_type_ingredients<span class="Delimiter">(</span>caller<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">).</span>type<span class="Delimiter">,</span> type_ingredients<span class="Delimiter">);</span>
<span class="Identifier">return</span> SIZE<span class="Delimiter">(</span>type_ingredients<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> accumulate_type_ingredients<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* type<span class="Delimiter">,</span> set<string>& out<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!type<span class="Delimiter">)</span> <span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>is_type_ingredient_name<span class="Delimiter">(</span>type<span class="Delimiter">-></span>name<span class="Delimiter">))</span> out<span class="Delimiter">.</span>insert<span class="Delimiter">(</span>type<span class="Delimiter">-></span>name<span class="Delimiter">);</span>
accumulate_type_ingredients<span class="Delimiter">(</span>type<span class="Delimiter">-></span>left<span class="Delimiter">,</span> out<span class="Delimiter">);</span>
accumulate_type_ingredients<span class="Delimiter">(</span>type<span class="Delimiter">-></span>right<span class="Delimiter">,</span> out<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
type_tree* parse_type_tree<span class="Delimiter">(</span><span class="Normal">const</span> string& s<span class="Delimiter">)</span> <span class="Delimiter">{</span>
string_tree* s2 = parse_string_tree<span class="Delimiter">(</span>s<span class="Delimiter">);</span>
type_tree* result = new_type_tree<span class="Delimiter">(</span>s2<span class="Delimiter">);</span>
<span class="Normal">delete</span> s2<span class="Delimiter">;</span>
<span class="Identifier">return</span> result<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
string inspect<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* x<span class="Delimiter">)</span> <span class="Delimiter">{</span>
ostringstream out<span class="Delimiter">;</span>
dump_inspect<span class="Delimiter">(</span>x<span class="Delimiter">,</span> out<span class="Delimiter">);</span>
<span class="Identifier">return</span> out<span class="Delimiter">.</span>str<span class="Delimiter">();</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> dump_inspect<span class="Delimiter">(</span><span class="Normal">const</span> type_tree* x<span class="Delimiter">,</span> ostream& out<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">-></span>left && !x<span class="Delimiter">-></span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
out << x<span class="Delimiter">-></span>name<span class="Delimiter">;</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
out << <span class="Constant">'('</span><span class="Delimiter">;</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">const</span> type_tree* curr = x<span class="Delimiter">;</span> curr<span class="Delimiter">;</span> curr = curr<span class="Delimiter">-></span>right<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>curr != x<span class="Delimiter">)</span> out << <span class="Constant">' '</span><span class="Delimiter">;</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>curr<span class="Delimiter">-></span>left<span class="Delimiter">)</span>
dump_inspect<span class="Delimiter">(</span>curr<span class="Delimiter">-></span>left<span class="Delimiter">,</span> out<span class="Delimiter">);</span>
<span class="Normal">else</span>
out << curr<span class="Delimiter">-></span>name<span class="Delimiter">;</span>
<span class="Delimiter">}</span>
out << <span class="Constant">')'</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> ensure_all_concrete_types<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">const</span><span class="Comment">*/</span> recipe& new_recipe<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& exemplar<span class="Delimiter">)</span> <span class="Delimiter">{</span>
trace<span class="Delimiter">(</span><span class="Constant">9993</span><span class="Delimiter">,</span> <span class="Constant">"transform"</span><span class="Delimiter">)</span> << <span class="Constant">"-- ensure all concrete types in recipe "</span> << new_recipe<span class="Delimiter">.</span>name << end<span class="Delimiter">();</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
ensure_all_concrete_types<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> exemplar<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span>
ensure_all_concrete_types<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">),</span> exemplar<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> i = <span class="Constant">0</span><span class="Delimiter">;</span> i < SIZE<span class="Delimiter">(</span>new_recipe<span class="Delimiter">.</span>steps<span class="Delimiter">);</span> ++i<span class="Delimiter">)</span> <span class="Delimiter">{</span>
instruction& inst = new_recipe<span class="Delimiter">.</span>steps<span class="Delimiter">.</span>at<span class="Delimiter">(</span>i<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span>
ensure_all_concrete_types<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>ingredients<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">),</span> exemplar<span class="Delimiter">);</span>
<span class="Normal">for</span> <span class="Delimiter">(</span><span class="Normal">int</span> j = <span class="Constant">0</span><span class="Delimiter">;</span> j < SIZE<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">);</span> ++j<span class="Delimiter">)</span>
ensure_all_concrete_types<span class="Delimiter">(</span>inst<span class="Delimiter">.</span>products<span class="Delimiter">.</span>at<span class="Delimiter">(</span>j<span class="Delimiter">),</span> exemplar<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Normal">void</span> ensure_all_concrete_types<span class="Delimiter">(</span><span class="Comment">/*</span><span class="Comment">const</span><span class="Comment">*/</span> reagent& x<span class="Delimiter">,</span> <span class="Normal">const</span> recipe& exemplar<span class="Delimiter">)</span> <span class="Delimiter">{</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type || contains_type_ingredient_name<span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">))</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>exemplar<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"failed to map a type to "</span> << x<span class="Delimiter">.</span>original_string << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>!x<span class="Delimiter">.</span>type<span class="Delimiter">)</span> x<span class="Delimiter">.</span>type = <span class="Normal">new</span> type_tree<span class="Delimiter">(</span><span class="Constant">""</span><span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span> <span class="Comment">// just to prevent crashes later</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Normal">if</span> <span class="Delimiter">(</span>x<span class="Delimiter">.</span>type<span class="Delimiter">-></span>value == -<span class="Constant">1</span><span class="Delimiter">)</span> <span class="Delimiter">{</span>
raise << maybe<span class="Delimiter">(</span>exemplar<span class="Delimiter">.</span>name<span class="Delimiter">)</span> << <span class="Constant">"failed to map a type to the unknown "</span> << x<span class="Delimiter">.</span>original_string << <span class="cSpecial">'\n'</span> << end<span class="Delimiter">();</span>
<span class="Identifier">return</span><span class="Delimiter">;</span>
<span class="Delimiter">}</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_2)</span>
<span class="muRecipe">def</span> main [
<span class="Constant">10</span>:point<span class="Special"> <- </span>merge <span class="Constant">14</span><span class="Delimiter">,</span> <span class="Constant">15</span>
<span class="Constant">11</span>:point<span class="Special"> <- </span>foo <span class="Constant">10</span>:point
]
<span class="Comment"># non-matching shape-shifting variant</span>
<span class="muRecipe">def</span> foo a:_t<span class="Delimiter">,</span> b:_t<span class="muRecipe"> -> </span>result:num [
local-scope
load-ingredients
result<span class="Special"> <- </span>copy <span class="Constant">34</span>
]
<span class="Comment"># matching shape-shifting variant</span>
<span class="muRecipe">def</span> foo a:_t<span class="muRecipe"> -> </span>result:_t [
local-scope
load-ingredients
result<span class="Special"> <- </span>copy a
]
<span class="traceContains">+mem: storing 14 in location 11</span>
<span class="traceContains">+mem: storing 15 in location 12</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_nonroot)</span>
<span class="muRecipe">def</span> main [
<span class="Constant">10</span>:foo:point<span class="Special"> <- </span>merge <span class="Constant">14</span><span class="Delimiter">,</span> <span class="Constant">15</span><span class="Delimiter">,</span> <span class="Constant">16</span>
<span class="Constant">20</span>:point/<span class="Special">raw <- </span>bar <span class="Constant">10</span>:foo:point
]
<span class="Comment"># shape-shifting recipe with type ingredient following some other type</span>
<span class="muRecipe">def</span> bar a:foo:_t<span class="muRecipe"> -> </span>result:_t [
local-scope
load-ingredients
result<span class="Special"> <- </span>get a<span class="Delimiter">,</span> <span class="Constant">x:offset</span>
]
<span class="muData">container</span> foo:_t [
<span class="Normal">x</span>:_t
<span class="Normal">y</span>:num
]
<span class="traceContains">+mem: storing 14 in location 20</span>
<span class="traceContains">+mem: storing 15 in location 21</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_nested)</span>
<span class="muData">container</span> c:_a:_b [
<span class="Normal">a</span>:_a
<span class="Normal">b</span>:_b
]
<span class="muRecipe">def</span> main [
<span class="Normal">s</span>:text<span class="Special"> <- </span><span class="Normal">new</span> [abc]
<span class="Delimiter">{</span>x: <span class="Delimiter">(</span>c <span class="Delimiter">(</span>address array character<span class="Delimiter">)</span> number<span class="Delimiter">)}</span><span class="Special"> <- </span>merge s<span class="Delimiter">,</span> <span class="Constant">34</span>
foo x
]
<span class="muRecipe">def</span> foo x:c:_bar:_baz [
local-scope
load-ingredients
]
<span class="Comment"># no errors</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_type_deduction_ignores_offsets)</span>
<span class="muRecipe">def</span> main [
<span class="Constant">10</span>:foo:point<span class="Special"> <- </span>merge <span class="Constant">14</span><span class="Delimiter">,</span> <span class="Constant">15</span><span class="Delimiter">,</span> <span class="Constant">16</span>
<span class="Constant">20</span>:point/<span class="Special">raw <- </span>bar <span class="Constant">10</span>:foo:point
]
<span class="muRecipe">def</span> bar a:foo:_t<span class="muRecipe"> -> </span>result:_t [
local-scope
load-ingredients
<span class="Normal">x</span>:num<span class="Special"> <- </span>copy <span class="Constant">1</span>
result<span class="Special"> <- </span>get a<span class="Delimiter">,</span> <span class="Constant">x:offset</span> <span class="Comment"># shouldn't collide with other variable</span>
]
<span class="muData">container</span> foo:_t [
<span class="Normal">x</span>:_t
<span class="Normal">y</span>:num
]
<span class="traceContains">+mem: storing 14 in location 20</span>
<span class="traceContains">+mem: storing 15 in location 21</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_empty)</span>
<span class="muRecipe">def</span> main [
foo <span class="Constant">1</span>
]
<span class="Comment"># shape-shifting recipe with no body</span>
<span class="muRecipe">def</span> foo a:_t [
]
<span class="Comment"># shouldn't crash</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_handles_shape_shifting_new_ingredient)</span>
<span class="muRecipe">def</span> main [
<span class="Constant">1</span>:&:foo:point<span class="Special"> <- </span>bar <span class="Constant">3</span>
<span class="Constant">11</span>:foo:point<span class="Special"> <- </span>copy *<span class="Constant">1</span>:&:foo:point
]
<span class="muData">container</span> foo:_t [
<span class="Normal">x</span>:_t
<span class="Normal">y</span>:num
]
<span class="muRecipe">def</span> bar x:num<span class="muRecipe"> -> </span>result:&:foo:_t [
local-scope
load-ingredients
<span class="Comment"># new refers to _t in its ingredient *value*</span>
result<span class="Special"> <- </span><span class="Normal">new</span> <span class="Delimiter">{(</span>foo _t<span class="Delimiter">)</span> : type<span class="Delimiter">}</span>
]
<span class="traceContains">+mem: storing 0 in location 11</span>
<span class="traceContains">+mem: storing 0 in location 12</span>
<span class="traceContains">+mem: storing 0 in location 13</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_handles_shape_shifting_new_ingredient_2)</span>
<span class="muRecipe">def</span> main [
<span class="Constant">1</span>:&:foo:point<span class="Special"> <- </span>bar <span class="Constant">3</span>
<span class="Constant">11</span>:foo:point<span class="Special"> <- </span>copy *<span class="Constant">1</span>:&:foo:point
]
<span class="muRecipe">def</span> bar x:num<span class="muRecipe"> -> </span>result:&:foo:_t [
local-scope
load-ingredients
<span class="Comment"># new refers to _t in its ingredient *value*</span>
result<span class="Special"> <- </span><span class="Normal">new</span> <span class="Delimiter">{(</span>foo _t<span class="Delimiter">)</span> : type<span class="Delimiter">}</span>
]
<span class="Comment"># container defined after use</span>
<span class="muData">container</span> foo:_t [
<span class="Normal">x</span>:_t
<span class="Normal">y</span>:num
]
<span class="traceContains">+mem: storing 0 in location 11</span>
<span class="traceContains">+mem: storing 0 in location 12</span>
<span class="traceContains">+mem: storing 0 in location 13</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_called_with_dummy)</span>
<span class="muRecipe">def</span> main [
_<span class="Special"> <- </span>bar <span class="Constant">34</span>
]
<span class="muRecipe">def</span> bar x:_t<span class="muRecipe"> -> </span>result:&:_t [
local-scope
load-ingredients
result<span class="Special"> <- </span>copy <span class="Constant">0</span>
]
$error: <span class="Constant">0</span>
<span class="Delimiter">:(code)</span>
<span class="Comment">// this one needs a little more fine-grained control</span>
<span class="Normal">void</span> test_shape_shifting_new_ingredient_does_not_pollute_global_namespace<span class="Delimiter">()</span> <span class="Delimiter">{</span>
<span class="Comment">// if you specialize a shape-shifting recipe that allocates a type-ingredient..</span>
transform<span class="Delimiter">(</span><span class="Constant">"def barz x:_elem [</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span class="Constant">" local-scope</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span class="Constant">" load-ingredients</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span class="Constant">" y:&:num <- new _elem:type</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span class="Constant">"]</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span class="Constant">"def fooz [</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span class="Constant">" local-scope</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span class="Constant">" barz 34</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span class="Constant">"]</span><span class="cSpecial">\n</span><span class="Constant">"</span><span class="Delimiter">);</span>
<span class="Comment">// ..and if you then try to load a new shape-shifting container with that</span>
<span class="Comment">// type-ingredient</span>
run<span class="Delimiter">(</span><span class="Constant">"container foo:_elem [</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span class="Constant">" x:_elem</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span class="Constant">" y:num</span><span class="cSpecial">\n</span><span class="Constant">"</span>
<span class="Constant">"]</span><span class="cSpecial">\n</span><span class="Constant">"</span><span class="Delimiter">);</span>
<span class="Comment">// then it should work as usual</span>
reagent callsite<span class="Delimiter">(</span><span class="Constant">"x:foo:point"</span><span class="Delimiter">);</span>
reagent element = element_type<span class="Delimiter">(</span>callsite<span class="Delimiter">.</span>type<span class="Delimiter">,</span> <span class="Constant">0</span><span class="Delimiter">);</span>
CHECK_EQ<span class="Delimiter">(</span>element<span class="Delimiter">.</span>name<span class="Delimiter">,</span> <span class="Constant">"x"</span><span class="Delimiter">);</span>
CHECK_EQ<span class="Delimiter">(</span>element<span class="Delimiter">.</span>type<span class="Delimiter">-></span>name<span class="Delimiter">,</span> <span class="Constant">"point"</span><span class="Delimiter">);</span>
CHECK<span class="Delimiter">(</span>!element<span class="Delimiter">.</span>type<span class="Delimiter">-></span>right<span class="Delimiter">);</span>
<span class="Delimiter">}</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_supports_compound_types)</span>
<span class="muRecipe">def</span> main [
<span class="Constant">1</span>:&:point<span class="Special"> <- </span><span class="Normal">new</span> <span class="Constant">point:type</span>
*<span class="Constant">1</span>:&:point<span class="Special"> <- </span>put *<span class="Constant">1</span>:&:point<span class="Delimiter">,</span> <span class="Constant">y:offset</span><span class="Delimiter">,</span> <span class="Constant">34</span>
<span class="Constant">3</span>:&:point<span class="Special"> <- </span>bar <span class="Constant">1</span>:&:point <span class="Comment"># specialize _t to address:point</span>
<span class="Constant">4</span>:point<span class="Special"> <- </span>copy *<span class="Constant">3</span>:&:point
]
<span class="muRecipe">def</span> bar a:_t<span class="muRecipe"> -> </span>result:_t [
local-scope
load-ingredients
result<span class="Special"> <- </span>copy a
]
<span class="traceContains">+mem: storing 34 in location 5</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_error)</span>
<span class="Special">% Hide_errors = true;</span>
<span class="muRecipe">def</span> main [
<span class="Normal">a</span>:num<span class="Special"> <- </span>copy <span class="Constant">3</span>
<span class="Normal">b</span>:&:num<span class="Special"> <- </span>foo a
]
<span class="muRecipe">def</span> foo a:_t<span class="muRecipe"> -> </span>b:_t [
load-ingredients
b<span class="Special"> <- </span>copy a
]
<span class="traceContains">+error: main: no call found for 'b:&:num <- foo a'</span>
<span class="Delimiter">:(scenario specialize_inside_recipe_without_header)</span>
<span class="muRecipe">def</span> main [
foo <span class="Constant">3</span>
]
<span class="muRecipe">def</span> foo [
local-scope
<span class="Normal">x</span>:num<span class="Special"> <- </span>next-ingredient <span class="Comment"># ensure no header</span>
<span class="Constant">1</span>:num/<span class="Special">raw <- </span>bar x <span class="Comment"># call a shape-shifting recipe</span>
]
<span class="muRecipe">def</span> bar x:_elem<span class="muRecipe"> -> </span>y:_elem [
local-scope
load-ingredients
y<span class="Special"> <- </span>add x<span class="Delimiter">,</span> <span class="Constant">1</span>
]
<span class="traceContains">+mem: storing 4 in location 1</span>
<span class="Delimiter">:(scenario specialize_with_literal)</span>
<span class="muRecipe">def</span> main [
local-scope
<span class="Comment"># permit literal to map to number</span>
<span class="Constant">1</span>:num/<span class="Special">raw <- </span>foo <span class="Constant">3</span>
]
<span class="muRecipe">def</span> foo x:_elem<span class="muRecipe"> -> </span>y:_elem [
local-scope
load-ingredients
y<span class="Special"> <- </span>add x<span class="Delimiter">,</span> <span class="Constant">1</span>
]
<span class="traceContains">+mem: storing 4 in location 1</span>
<span class="Delimiter">:(scenario specialize_with_literal_2)</span>
<span class="muRecipe">def</span> main [
local-scope
<span class="Comment"># permit literal to map to character</span>
<span class="Constant">1</span>:<span class="Normal">char</span>/<span class="Special">raw <- </span>foo <span class="Constant">3</span>
]
<span class="muRecipe">def</span> foo x:_elem<span class="muRecipe"> -> </span>y:_elem [
local-scope
load-ingredients
y<span class="Special"> <- </span>add x<span class="Delimiter">,</span> <span class="Constant">1</span>
]
<span class="traceContains">+mem: storing 4 in location 1</span>
<span class="Delimiter">:(scenario specialize_with_literal_3)</span>
<span class="muRecipe">def</span> main [
local-scope
<span class="Comment"># permit '0' to map to address to shape-shifting type-ingredient</span>
<span class="Constant">1</span>:&:<span class="Normal">char</span>/<span class="Special">raw <- </span>foo <span class="Constant">0</span>
]
<span class="muRecipe">def</span> foo x:&:_elem<span class="muRecipe"> -> </span>y:&:_elem [
local-scope
load-ingredients
y<span class="Special"> <- </span>copy x
]
<span class="traceContains">+mem: storing 0 in location 1</span>
$error: <span class="Constant">0</span>
<span class="Delimiter">:(scenario specialize_with_literal_4)</span>
<span class="Special">% Hide_errors = true;</span>
<span class="muRecipe">def</span> main [
local-scope
<span class="Comment"># ambiguous call: what's the type of its ingredient?!</span>
foo <span class="Constant">0</span>
]
<span class="muRecipe">def</span> foo x:&:_elem<span class="muRecipe"> -> </span>y:&:_elem [
local-scope
load-ingredients
y<span class="Special"> <- </span>copy x
]
<span class="traceContains">+error: main: instruction 'foo' has no valid specialization</span>
<span class="Delimiter">:(scenario specialize_with_literal_5)</span>
<span class="muRecipe">def</span> main [
foo <span class="Constant">3</span><span class="Delimiter">,</span> <span class="Constant">4</span> <span class="Comment"># recipe mapping two variables to literals</span>
]
<span class="muRecipe">def</span> foo x:_elem<span class="Delimiter">,</span> y:_elem [
local-scope
load-ingredients
<span class="Constant">1</span>:num/<span class="Special">raw <- </span>add x<span class="Delimiter">,</span> y
]
<span class="traceContains">+mem: storing 7 in location 1</span>
<span class="Delimiter">:(scenario multiple_shape_shifting_variants)</span>
<span class="Comment"># try to call two different shape-shifting recipes with the same name</span>
<span class="muRecipe">def</span> main [
<span class="Normal">e1</span>:d1:num<span class="Special"> <- </span>merge <span class="Constant">3</span>
<span class="Normal">e2</span>:d2:num<span class="Special"> <- </span>merge <span class="Constant">4</span><span class="Delimiter">,</span> <span class="Constant">5</span>
<span class="Constant">1</span>:num/<span class="Special">raw <- </span>foo e1
<span class="Constant">2</span>:num/<span class="Special">raw <- </span>foo e2
]
<span class="Comment"># the two shape-shifting definitions</span>
<span class="muRecipe">def</span> foo a:d1:_elem<span class="muRecipe"> -> </span>b:num [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">34</span>
]
<span class="muRecipe">def</span> foo a:d2:_elem<span class="muRecipe"> -> </span>b:num [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">35</span>
]
<span class="Comment"># the shape-shifting containers they use</span>
<span class="muData">container</span> d1:_elem [
<span class="Normal">x</span>:_elem
]
<span class="muData">container</span> d2:_elem [
<span class="Normal">x</span>:num
<span class="Normal">y</span>:_elem
]
<span class="traceContains">+mem: storing 34 in location 1</span>
<span class="traceContains">+mem: storing 35 in location 2</span>
<span class="Delimiter">:(scenario multiple_shape_shifting_variants_2)</span>
<span class="Comment"># static dispatch between shape-shifting variants, _including pointer lookups_</span>
<span class="muRecipe">def</span> main [
<span class="Normal">e1</span>:d1:num<span class="Special"> <- </span>merge <span class="Constant">3</span>
<span class="Normal">e2</span>:&:d2:num<span class="Special"> <- </span><span class="Normal">new</span> <span class="Delimiter">{(</span>d2 number<span class="Delimiter">)</span>: type<span class="Delimiter">}</span>
<span class="Constant">1</span>:num/<span class="Special">raw <- </span>foo e1
<span class="Constant">2</span>:num/<span class="Special">raw <- </span>foo *e2 <span class="Comment"># different from previous scenario</span>
]
<span class="muRecipe">def</span> foo a:d1:_elem<span class="muRecipe"> -> </span>b:num [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">34</span>
]
<span class="muRecipe">def</span> foo a:d2:_elem<span class="muRecipe"> -> </span>b:num [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">35</span>
]
<span class="muData">container</span> d1:_elem [
<span class="Normal">x</span>:_elem
]
<span class="muData">container</span> d2:_elem [
<span class="Normal">x</span>:num
<span class="Normal">y</span>:_elem
]
<span class="traceContains">+mem: storing 34 in location 1</span>
<span class="traceContains">+mem: storing 35 in location 2</span>
<span class="Delimiter">:(scenario missing_type_in_shape_shifting_recipe)</span>
<span class="Special">% Hide_errors = true;</span>
<span class="muRecipe">def</span> main [
<span class="Normal">a</span>:d1:num<span class="Special"> <- </span>merge <span class="Constant">3</span>
foo a
]
<span class="muRecipe">def</span> foo a:d1:_elem<span class="muRecipe"> -> </span>b:num [
local-scope
load-ingredients
copy e <span class="Comment"># no such variable</span>
<span class="Identifier">return</span> <span class="Constant">34</span>
]
<span class="muData">container</span> d1:_elem [
<span class="Normal">x</span>:_elem
]
<span class="traceContains">+error: foo: unknown type for 'e' in 'copy e' (check the name for typos)</span>
<span class="traceContains">+error: specializing foo: missing type for 'e'</span>
<span class="Comment"># and it doesn't crash</span>
<span class="Delimiter">:(scenario missing_type_in_shape_shifting_recipe_2)</span>
<span class="Special">% Hide_errors = true;</span>
<span class="muRecipe">def</span> main [
<span class="Normal">a</span>:d1:num<span class="Special"> <- </span>merge <span class="Constant">3</span>
foo a
]
<span class="muRecipe">def</span> foo a:d1:_elem<span class="muRecipe"> -> </span>b:num [
local-scope
load-ingredients
get e<span class="Delimiter">,</span> <span class="Constant">x:offset</span> <span class="Comment"># unknown variable in a 'get', which does some extra checking</span>
<span class="Identifier">return</span> <span class="Constant">34</span>
]
<span class="muData">container</span> d1:_elem [
<span class="Normal">x</span>:_elem
]
<span class="traceContains">+error: foo: unknown type for 'e' in 'get e, x:offset' (check the name for typos)</span>
<span class="traceContains">+error: specializing foo: missing type for 'e'</span>
<span class="Comment"># and it doesn't crash</span>
<span class="Delimiter">:(scenarios transform)</span>
<span class="Delimiter">:(scenario specialize_recursive_shape_shifting_recipe)</span>
<span class="muRecipe">def</span> main [
<span class="Constant">1</span>:num<span class="Special"> <- </span>copy <span class="Constant">34</span>
<span class="Constant">2</span>:num<span class="Special"> <- </span>foo <span class="Constant">1</span>:num
]
<span class="muRecipe">def</span> foo x:_elem<span class="muRecipe"> -> </span>y:num [
local-scope
load-ingredients
<span class="Delimiter">{</span>
<span class="Identifier">break</span>
<span class="Normal">y</span>:num<span class="Special"> <- </span>foo x
<span class="Delimiter">}</span>
<span class="Identifier">return</span> y
]
<span class="traceContains">+transform: new specialization: foo_2</span>
<span class="Comment"># transform terminates</span>
<span class="Delimiter">:(scenarios run)</span>
<span class="Delimiter">:(scenario specialize_most_similar_variant)</span>
<span class="muRecipe">def</span> main [
<span class="Constant">1</span>:&:num<span class="Special"> <- </span><span class="Normal">new</span> <span class="Constant">number:type</span>
<span class="Constant">2</span>:num<span class="Special"> <- </span>foo <span class="Constant">1</span>:&:num
]
<span class="muRecipe">def</span> foo x:_elem<span class="muRecipe"> -> </span>y:num [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">34</span>
]
<span class="muRecipe">def</span> foo x:&:_elem<span class="muRecipe"> -> </span>y:num [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">35</span>
]
<span class="traceContains">+mem: storing 35 in location 2</span>
<span class="Delimiter">:(scenario specialize_most_similar_variant_2)</span>
<span class="Comment"># version with headers padded with lots of unrelated concrete types</span>
<span class="muRecipe">def</span> main [
<span class="Constant">1</span>:num<span class="Special"> <- </span>copy <span class="Constant">23</span>
<span class="Constant">2</span>:&:@:num<span class="Special"> <- </span>copy <span class="Constant">0</span>
<span class="Constant">3</span>:num<span class="Special"> <- </span>foo <span class="Constant">2</span>:&:@:num<span class="Delimiter">,</span> <span class="Constant">1</span>:num
]
<span class="Comment"># variant with concrete type</span>
<span class="muRecipe">def</span> foo dummy:&:@:num<span class="Delimiter">,</span> x:num<span class="muRecipe"> -> </span>y:num<span class="Delimiter">,</span> dummy:&:@:num [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">34</span>
]
<span class="Comment"># shape-shifting variant</span>
<span class="muRecipe">def</span> foo dummy:&:@:num<span class="Delimiter">,</span> x:_elem<span class="muRecipe"> -> </span>y:num<span class="Delimiter">,</span> dummy:&:@:num [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">35</span>
]
<span class="Comment"># prefer the concrete variant</span>
<span class="traceContains">+mem: storing 34 in location 3</span>
<span class="Delimiter">:(scenario specialize_most_similar_variant_3)</span>
<span class="muRecipe">def</span> main [
<span class="Constant">1</span>:text<span class="Special"> <- </span><span class="Normal">new</span> [abc]
foo <span class="Constant">1</span>:text
]
<span class="muRecipe">def</span> foo x:text [
<span class="Constant">2</span>:num<span class="Special"> <- </span>copy <span class="Constant">34</span>
]
<span class="muRecipe">def</span> foo x:&:_elem [
<span class="Constant">2</span>:num<span class="Special"> <- </span>copy <span class="Constant">35</span>
]
<span class="Comment"># make sure the more precise version was used</span>
<span class="traceContains">+mem: storing 34 in location 2</span>
<span class="Delimiter">:(scenario specialize_literal_as_number)</span>
<span class="muRecipe">def</span> main [
<span class="Constant">1</span>:num<span class="Special"> <- </span>foo <span class="Constant">23</span>
]
<span class="muRecipe">def</span> foo x:_elem<span class="muRecipe"> -> </span>y:num [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">34</span>
]
<span class="muRecipe">def</span> foo x:<span class="Normal">char</span><span class="muRecipe"> -> </span>y:num [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">35</span>
]
<span class="traceContains">+mem: storing 34 in location 1</span>
<span class="Delimiter">:(scenario specialize_literal_as_number_2)</span>
<span class="Comment"># version calling with literal</span>
<span class="muRecipe">def</span> main [
<span class="Constant">1</span>:num<span class="Special"> <- </span>foo <span class="Constant">0</span>
]
<span class="Comment"># variant with concrete type</span>
<span class="muRecipe">def</span> foo x:num<span class="muRecipe"> -> </span>y:num [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">34</span>
]
<span class="Comment"># shape-shifting variant</span>
<span class="muRecipe">def</span> foo x:&:_elem<span class="muRecipe"> -> </span>y:num [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">35</span>
]
<span class="Comment"># prefer the concrete variant, ignore concrete types in scoring the shape-shifting variant</span>
<span class="traceContains">+mem: storing 34 in location 1</span>
<span class="Delimiter">:(scenario specialize_literal_as_address)</span>
<span class="muRecipe">def</span> main [
<span class="Constant">1</span>:num<span class="Special"> <- </span>foo <span class="Constant">0</span>
]
<span class="Comment"># variant with concrete address type</span>
<span class="muRecipe">def</span> foo x:&:num<span class="muRecipe"> -> </span>y:num [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">34</span>
]
<span class="Comment"># shape-shifting variant</span>
<span class="muRecipe">def</span> foo x:&:_elem<span class="muRecipe"> -> </span>y:num [
local-scope
load-ingredients
<span class="Identifier">return</span> <span class="Constant">35</span>
]
<span class="Comment"># prefer the concrete variant, ignore concrete types in scoring the shape-shifting variant</span>
<span class="traceContains">+mem: storing 34 in location 1</span>
<span class="Delimiter">:(scenario missing_type_during_specialization)</span>
<span class="Special">% Hide_errors = true;</span>
<span class="Comment"># define a shape-shifting recipe</span>
<span class="muRecipe">def</span> foo a:_elem [
]
<span class="Comment"># define a container with field 'z'</span>
<span class="muData">container</span> foo2 [
<span class="Normal">z</span>:num
]
<span class="muRecipe">def</span> main [
local-scope
<span class="Normal">x</span>:foo2<span class="Special"> <- </span>merge <span class="Constant">34</span>
<span class="Normal">y</span>:num<span class="Special"> <- </span>get x<span class="Delimiter">,</span> z:offse <span class="Comment"># typo in 'offset'</span>
<span class="PreProc"> </span><span class="Comment"># define a variable with the same name 'z'</span>
<span class="Normal">z</span>:num<span class="Special"> <- </span>copy <span class="Constant">34</span>
<span class="Comment"># trigger specialization of the shape-shifting recipe</span>
foo z
]
<span class="Comment"># shouldn't crash</span>
<span class="Delimiter">:(scenario missing_type_during_specialization2)</span>
<span class="Special">% Hide_errors = true;</span>
<span class="Comment"># define a shape-shifting recipe</span>
<span class="muRecipe">def</span> foo a:_elem [
]
<span class="Comment"># define a container with field 'z'</span>
<span class="muData">container</span> foo2 [
<span class="Normal">z</span>:num
]
<span class="muRecipe">def</span> main [
local-scope
<span class="Normal">x</span>:foo2<span class="Special"> <- </span>merge <span class="Constant">34</span>
<span class="Normal">y</span>:num<span class="Special"> <- </span>get x<span class="Delimiter">,</span> z:offse <span class="Comment"># typo in 'offset'</span>
<span class="PreProc"> </span><span class="Comment"># define a variable with the same name 'z'</span>
<span class="Normal">z</span>:&:num<span class="Special"> <- </span>copy <span class="Constant">34</span>
<span class="Comment"># trigger specialization of the shape-shifting recipe</span>
foo *z
]
<span class="Comment"># shouldn't crash</span>
<span class="Delimiter">:(scenario tangle_shape_shifting_recipe)</span>
<span class="Comment"># shape-shifting recipe</span>
<span class="muRecipe">def</span> foo a:_elem [
local-scope
load-ingredients
<label1>
]
<span class="Comment"># tangle some code that refers to the type ingredient</span>
<span class="muRecipe">after</span> <label1> [
<span class="Normal">b</span>:_elem<span class="Special"> <- </span>copy a
]
<span class="Comment"># trigger specialization</span>
<span class="muRecipe">def</span> main [
local-scope
foo <span class="Constant">34</span>
]
$error: <span class="Constant">0</span>
<span class="Delimiter">:(scenario tangle_shape_shifting_recipe_with_type_abbreviation)</span>
<span class="Comment"># shape-shifting recipe</span>
<span class="muRecipe">def</span> foo a:_elem [
local-scope
load-ingredients
<label1>
]
<span class="Comment"># tangle some code that refers to the type ingredient</span>
<span class="muRecipe">after</span> <label1> [
<span class="Normal">b</span>:<span class="Normal">bool</span><span class="Special"> <- </span>copy <span class="Constant">0</span> <span class="Comment"># type abbreviation</span>
]
<span class="Comment"># trigger specialization</span>
<span class="muRecipe">def</span> main [
local-scope
foo <span class="Constant">34</span>
]
$error: <span class="Constant">0</span>
<span class="Delimiter">:(scenario shape_shifting_recipe_coexists_with_primitive)</span>
<span class="Comment"># recipe overloading a primitive with a generic type</span>
<span class="muRecipe">def</span> add a:&:foo:_elem [
assert <span class="Constant">0</span><span class="Delimiter">,</span> [should <span class="Normal">not</span> get here]
]
<span class="muRecipe">def</span> main [
<span class="Comment"># call primitive add with literal 0</span>
add <span class="Constant">0</span><span class="Delimiter">,</span> <span class="Constant">0</span>
]
$error: <span class="Constant">0</span>
</pre>
</body>
</html>
<!-- vim: set foldmethod=manual : -->
|