-
Notifications
You must be signed in to change notification settings - Fork 65
/
2-is.html
766 lines (707 loc) · 158 KB
/
2-is.html
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
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>Inter Schemas</title>
<link href="../docs-assets/Breadcrumbs.css" rel="stylesheet" rev="stylesheet" type="text/css">
<meta name="viewport" content="width=device-width initial-scale=1">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<meta http-equiv="Content-Language" content="en-gb">
<link href="../docs-assets/Contents.css" rel="stylesheet" rev="stylesheet" type="text/css">
<link href="../docs-assets/Progress.css" rel="stylesheet" rev="stylesheet" type="text/css">
<link href="../docs-assets/Navigation.css" rel="stylesheet" rev="stylesheet" type="text/css">
<link href="../docs-assets/Fonts.css" rel="stylesheet" rev="stylesheet" type="text/css">
<link href="../docs-assets/Base.css" rel="stylesheet" rev="stylesheet" type="text/css">
<script>
function togglePopup(material_id) {
var popup = document.getElementById(material_id);
popup.classList.toggle("show");
}
</script>
<link href="../docs-assets/Popups.css" rel="stylesheet" rev="stylesheet" type="text/css">
<link href="../docs-assets/Colours.css" rel="stylesheet" rev="stylesheet" type="text/css">
</head>
<body class="commentary-font">
<nav role="navigation">
<h1><a href="../index.html">
<img src="../docs-assets/Inform.png" height=72">
</a></h1>
<ul><li><a href="../index.html">home</a></li>
</ul><h2>Compiler</h2><ul>
<li><a href="../structure.html">structure</a></li>
<li><a href="../inbuildn.html">inbuild</a></li>
<li><a href="../inform7n.html">inform7</a></li>
<li><a href="../intern.html">inter</a></li>
<li><a href="../services.html">services</a></li>
<li><a href="../secrets.html">secrets</a></li>
</ul><h2>Other Tools</h2><ul>
<li><a href="../inblorbn.html">inblorb</a></li>
<li><a href="../indocn.html">indoc</a></li>
<li><a href="../inform6.html">inform6</a></li>
<li><a href="../inpolicyn.html">inpolicy</a></li>
<li><a href="../inrtpsn.html">inrtps</a></li>
</ul><h2>Resources</h2><ul>
<li><a href="../extensions.html">extensions</a></li>
<li><a href="../kits.html">kits</a></li>
</ul><h2>Repository</h2><ul>
<li><a href="https://github.com/ganelson/inform"><img src="../docs-assets/github.png" height=18> github</a></li>
</ul><h2>Related Projects</h2><ul>
<li><a href="../../../inweb/index.html">inweb</a></li>
<li><a href="../../../intest/index.html">intest</a></li>
</ul>
</nav>
<main role="main">
<!--Weave of 'Inter Schemas' generated by Inweb-->
<div class="breadcrumbs">
<ul class="crumbs"><li><a href="../index.html">Home</a></li><li><a href="../intern.html">Inter Modules</a></li><li><a href="index.html">building</a></li><li><a href="index.html#2">Chapter 2: Blueprints</a></li><li><b>Inter Schemas</b></li></ul></div>
<p class="purpose">Building an inter schema, a form of annotated syntax tree.</p>
<ul class="toc"><li><a href="2-is.html#SP1">§1. Introduction</a></li><li><a href="2-is.html#SP14">§14. Token insertion</a></li><li><a href="2-is.html#SP17">§17. Logging</a></li><li><a href="2-is.html#SP18">§18. Lint</a></li><li><a href="2-is.html#SP19">§19. Errors</a></li></ul><hr class="tocbar">
<p class="commentary firstcommentary"><a id="SP1" class="paragraph-anchor"></a><b>§1. Introduction. </b>See <a href="P-wtmd.html" class="internal">What This Module Does</a> for an introduction to what an Inter schema is.
For this section of code, it's sufficient to know that an <a href="2-is.html#SP1" class="internal">inter_schema</a>
is an annotated syntax tree made up of <a href="2-is.html#SP3" class="internal">inter_schema_node</a> nodes.
</p>
<p class="commentary">Relatively few inter schemas are generated during Inform's run — typically a
few hundred — so they do not need to be stored compactly or compiled quickly.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">converted_from</span><span class="plain-syntax">; </span><span class="comment-syntax"> a copy of the source notation</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">node_tree</span><span class="plain-syntax">; </span><span class="comment-syntax"> the structure</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">mid_case</span><span class="plain-syntax">; </span><span class="comment-syntax"> does this seem to be used inside a switch case?</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">dereference_mode</span><span class="plain-syntax">; </span><span class="comment-syntax"> emit from this in dereference-pointers mode</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">linked_list</span><span class="plain-syntax"> *</span><span class="identifier-syntax">parsing_errors</span><span class="plain-syntax">; </span><span class="comment-syntax"> of </span><span class="extract"><span class="extract-syntax">schema_parsing_error</span></span>
<span class="plain-syntax"> </span><span class="identifier-syntax">CLASS_DEFINITION</span>
<span class="plain-syntax">} </span><span class="reserved-syntax">inter_schema</span><span class="plain-syntax">;</span>
</pre>
<ul class="endnotetexts"><li>The structure inter_schema is accessed in 2/pis, 2/tkn, 2/rmf, 2/eis and here.</li></ul>
<p class="commentary firstcommentary"><a id="SP2" class="paragraph-anchor"></a><b>§2. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">inter_schema</span><span class="plain-syntax"> *</span><span class="function-syntax">InterSchemas::new</span><button class="popup" onclick="togglePopup('usagePopup1')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup1">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::new</span></span>:<br/>Parsing Inter Schemas - <a href="2-pis.html#SP5">§5</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">source</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema</span><span class="plain-syntax"> *</span><span class="identifier-syntax">sch</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">converted_from</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::duplicate</span><span class="plain-syntax">(</span><span class="identifier-syntax">source</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">node_tree</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">mid_case</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">dereference_mode</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">parsing_errors</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP3" class="paragraph-anchor"></a><b>§3. </b>Each node has one of the following <span class="extract"><span class="extract-syntax">*_ISNT</span></span> types. (For a while eliminated nodes
were retained in the tree but given the no-op type <span class="extract"><span class="extract-syntax">OH_NO_IT_ISNT</span></span>, but unfortunately
we now more efficiently remove them.)
</p>
<pre class="definitions code-font"><span class="definition-keyword">enum</span> <span class="constant-syntax">EXPRESSION_ISNT</span><span class="plain-syntax"> </span><span class="identifier-syntax">from</span><span class="plain-syntax"> </span><span class="constant-syntax">1</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">CODE_ISNT</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">EVAL_ISNT</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">STATEMENT_ISNT</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">OPERATION_ISNT</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">SUBEXPRESSION_ISNT</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">DIRECTIVE_ISNT</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">ASSEMBLY_ISNT</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">LABEL_ISNT</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">CALL_ISNT</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">MESSAGE_ISNT</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">CALLMESSAGE_ISNT</span>
</pre>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema</span><span class="plain-syntax"> *</span><span class="identifier-syntax">parent_schema</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">parent_node</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">child_node</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">next_node</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">node_marked</span><span class="plain-syntax">; </span><span class="comment-syntax"> used fleetingly during traverses</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">isn_type</span><span class="plain-syntax">; </span><span class="comment-syntax"> one of the </span><span class="extract"><span class="extract-syntax">*_ISNT</span></span><span class="comment-syntax"> values</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">isn_clarifier</span><span class="plain-syntax">; </span><span class="comment-syntax"> for </span><span class="extract"><span class="extract-syntax">STATEMENT_ISNT</span></span><span class="comment-syntax"> and </span><span class="extract"><span class="extract-syntax">OPERATION_ISNT</span></span><span class="comment-syntax"> only</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">dir_clarifier</span><span class="plain-syntax">; </span><span class="comment-syntax"> for </span><span class="extract"><span class="extract-syntax">DIRECTIVE_ISNT</span></span><span class="comment-syntax"> only</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">expression_tokens</span><span class="plain-syntax">; </span><span class="comment-syntax"> for </span><span class="extract"><span class="extract-syntax">EXPRESSION_ISNT</span></span><span class="comment-syntax"> only</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">semicolon_terminated</span><span class="plain-syntax">; </span><span class="comment-syntax"> for </span><span class="extract"><span class="extract-syntax">EXPRESSION_ISNT</span></span><span class="comment-syntax"> only</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">unclosed</span><span class="plain-syntax">; </span><span class="comment-syntax"> for </span><span class="extract"><span class="extract-syntax">CODE_ISNT</span></span><span class="comment-syntax"> only</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">unopened</span><span class="plain-syntax">; </span><span class="comment-syntax"> for </span><span class="extract"><span class="extract-syntax">CODE_ISNT</span></span><span class="comment-syntax"> only</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">blocked_by_conditional</span><span class="plain-syntax">; </span><span class="comment-syntax"> used in code generation</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">CLASS_DEFINITION</span>
<span class="plain-syntax">} </span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax">;</span>
</pre>
<ul class="endnotetexts"><li>The structure inter_schema_node is accessed in 2/rmf, 2/eis and here.</li></ul>
<p class="commentary firstcommentary"><a id="SP4" class="paragraph-anchor"></a><b>§4. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="function-syntax">InterSchemas::new_node</span><button class="popup" onclick="togglePopup('usagePopup2')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup2">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::new_node</span></span>:<br/><a href="2-is.html#SP6">§6</a>, <a href="2-is.html#SP14">§14</a><br/>Ramification - <a href="2-rmf.html#SP4">§4</a>, <a href="2-rmf.html#SP5">§5</a>, <a href="2-rmf.html#SP7">§7</a>, <a href="2-rmf.html#SP8">§8</a>, <a href="2-rmf.html#SP10">§10</a>, <a href="2-rmf.html#SP12">§12</a>, <a href="2-rmf.html#SP13_1_7_2">§13.1.7.2</a>, <a href="2-rmf.html#SP13_2">§13.2</a>, <a href="2-rmf.html#SP13_3">§13.3</a>, <a href="2-rmf.html#SP13_4_1">§13.4.1</a>, <a href="2-rmf.html#SP13_4_3">§13.4.3</a>, <a href="2-rmf.html#SP14">§14</a>, <a href="2-rmf.html#SP15">§15</a>, <a href="2-rmf.html#SP17_1">§17.1</a>, <a href="2-rmf.html#SP18">§18</a>, <a href="2-rmf.html#SP19">§19</a>, <a href="2-rmf.html#SP22_3">§22.3</a>, <a href="2-rmf.html#SP22_4">§22.4</a>, <a href="2-rmf.html#SP23_1_1_1">§23.1.1.1</a>, <a href="2-rmf.html#SP24">§24</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema</span><span class="plain-syntax"> *</span><span class="identifier-syntax">sch</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">isnt</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">isn</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">parent_schema</span><span class="plain-syntax"> = </span><span class="identifier-syntax">sch</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">parent_node</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">child_node</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">next_node</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">node_marked</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">isn_type</span><span class="plain-syntax"> = </span><span class="identifier-syntax">isnt</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">expression_tokens</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">isn_clarifier</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">dir_clarifier</span><span class="plain-syntax"> = -1;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">semicolon_terminated</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">unclosed</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">unopened</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">blocked_by_conditional</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP5" class="paragraph-anchor"></a><b>§5. </b>Ordinarily, a <span class="extract"><span class="extract-syntax">CODE_ISNT</span></span> node represents a complete block of I6 code.
For example, in
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">x</span><span class="plain-syntax"> == </span><span class="constant-syntax">1</span><span class="plain-syntax">) { </span><span class="reserved-syntax">print</span><span class="plain-syntax"> </span><span class="string-syntax">"Hello</span><span class="comment-syntax">; }</span>
</pre>
<p class="commentary">the print statement occurs inside a complete block, which will eventually
be represented as a <span class="extract"><span class="extract-syntax">CODE_ISNT</span></span>. But some inline phrase definitions leave
blocks half-open. For example,
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">x</span><span class="plain-syntax"> == </span><span class="constant-syntax">1</span><span class="plain-syntax">)</span>
</pre>
<p class="commentary">is a legal phrase definition: we read it as
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">x</span><span class="plain-syntax"> == </span><span class="constant-syntax">1</span><span class="plain-syntax">) {</span>
</pre>
<p class="commentary">and the schema has to contain a <span class="extract"><span class="extract-syntax">CODE_ISNT</span></span> marked as having been left
unclosed. Similarly, some definitions close an I6 block which is assumed
as having been opened by an earlier phrase invocation.
</p>
<p class="commentary">Here we mark a code node as being unclosed. Clearly, if a node is unclosed
then any parent code nodes of it must also be unclosed, so we recurse
upwards.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InterSchemas::mark_unclosed</span><button class="popup" onclick="togglePopup('usagePopup3')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup3">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::mark_unclosed</span></span>:<br/>Ramification - <a href="2-rmf.html#SP7">§7</a>, <a href="2-rmf.html#SP10">§10</a>, <a href="2-rmf.html#SP15">§15</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">isn</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">while</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">isn_type</span><span class="plain-syntax"> == </span><span class="constant-syntax">CODE_ISNT</span><span class="plain-syntax">) </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">unclosed</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax"> = </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">parent_node</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP6" class="paragraph-anchor"></a><b>§6. </b>The situation with unopened nodes is different: we must ensure that a
single code node is left unopened, even if we have to create a code node
at the top of the tree to serve that role.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InterSchemas::mark_unopened</span><button class="popup" onclick="togglePopup('usagePopup4')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup4">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::mark_unopened</span></span>:<br/>Ramification - <a href="2-rmf.html#SP7">§7</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">isn</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">while</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">isn_type</span><span class="plain-syntax"> == </span><span class="constant-syntax">CODE_ISNT</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">unopened</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">parent_node</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema</span><span class="plain-syntax"> *</span><span class="identifier-syntax">sch</span><span class="plain-syntax"> = </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">parent_schema</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">top</span><span class="plain-syntax"> = </span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">node_tree</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">code_isn</span><span class="plain-syntax"> =</span>
<span class="plain-syntax"> </span><a href="2-is.html#SP4" class="function-link"><span class="function-syntax">InterSchemas::new_node</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">parent_schema</span><span class="plain-syntax">, </span><span class="constant-syntax">CODE_ISNT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">code_isn</span><span class="plain-syntax">-></span><span class="element-syntax">child_node</span><span class="plain-syntax"> = </span><span class="identifier-syntax">top</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">node_tree</span><span class="plain-syntax"> = </span><span class="identifier-syntax">code_isn</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">n</span><span class="plain-syntax"> = </span><span class="identifier-syntax">top</span><span class="plain-syntax">; </span><span class="identifier-syntax">n</span><span class="plain-syntax">; </span><span class="identifier-syntax">n</span><span class="plain-syntax"> = </span><span class="identifier-syntax">n</span><span class="plain-syntax">-></span><span class="element-syntax">next_node</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">n</span><span class="plain-syntax">-></span><span class="element-syntax">parent_node</span><span class="plain-syntax"> = </span><span class="identifier-syntax">code_isn</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">code_isn</span><span class="plain-syntax">-></span><span class="element-syntax">unopened</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">isn</span><span class="plain-syntax"> = </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">parent_node</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP7" class="paragraph-anchor"></a><b>§7. </b>A further complication is that some schemas arise from definitions used
only in the middle of switch statements; they contain neither the start nor
the end of the construct, so the above mechanisms are not sufficient.
For example, the inline definition
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="plain-syntax"> {</span><span class="identifier-syntax">X</span><span class="plain-syntax">}:</span>
</pre>
<p class="commentary">implies, by use of the colon, that it's a switch case. We can't conveniently
associate this with any single node, so we mark the schema as a whole.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InterSchemas::mark_case_closed</span><button class="popup" onclick="togglePopup('usagePopup5')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup5">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::mark_case_closed</span></span>:<br/>Ramification - <a href="2-rmf.html#SP10">§10</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">isn</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">) </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">parent_schema</span><span class="plain-syntax">-></span><span class="identifier-syntax">mid_case</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP8" class="paragraph-anchor"></a><b>§8. </b><span class="extract"><span class="extract-syntax">EXPRESSION_ISNT</span></span> nodes carry a linked list of tokens with them. When we
begin compiling a schema, we form a single expression node with a long list
of tokens: gradually this is transformed into a tree of nodes with more,
but much shorter, expression nodes, and in the process most of the token
types are eliminated. The following types are present only during the
compilation process, and never survive into the final schema:
</p>
<pre class="definitions code-font"><span class="definition-keyword">enum</span> <span class="constant-syntax">RAW_ISTT</span><span class="plain-syntax"> </span><span class="identifier-syntax">from</span><span class="plain-syntax"> </span><span class="constant-syntax">1</span><span class="plain-syntax"> </span><span class="comment-syntax"> something unidentified as yet</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">WHITE_SPACE_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> a stretch of white space</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">RESERVED_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> am I6 reserved word such as </span><span class="extract"><span class="extract-syntax">while</span></span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">OPERATOR_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> an I6 operator such as </span><span class="extract"><span class="extract-syntax">--></span></span><span class="comment-syntax"> or </span><span class="extract"><span class="extract-syntax">+</span></span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">DIVIDER_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> a semicolon used to divide I6 statements</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">OPEN_ROUND_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> open round bracket</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">CLOSE_ROUND_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> close round bracket</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">OPEN_BRACE_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> open brace bracket</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">CLOSE_BRACE_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> close brace bracket</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">COMMA_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> comma</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">COLON_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> colon</span>
</pre>
<p class="commentary firstcommentary"><a id="SP9" class="paragraph-anchor"></a><b>§9. </b>Whereas these token types do make it into the compiled schema:
</p>
<pre class="definitions code-font"><span class="definition-keyword">enum</span> <span class="constant-syntax">IDENTIFIER_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> an I6 identifier such as </span><span class="extract"><span class="extract-syntax">my_var12</span></span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">OPCODE_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> an Inform assembly language opcode such as </span><span class="extract"><span class="extract-syntax">@pull</span></span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">DIRECTIVE_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> an Inform compiler directive such as </span><span class="extract"><span class="extract-syntax">#iftrue</span></span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">NUMBER_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> a constant number</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">BIN_NUMBER_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> a constant number</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">HEX_NUMBER_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> a constant number</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">REAL_NUMBER_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> a constant number</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">DQUOTED_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> a constant piece of text </span><span class="extract"><span class="extract-syntax">"like this"</span></span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">SQUOTED_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> a constant piece of text such as </span><span class="extract"><span class="extract-syntax">'x'</span></span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">I7_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> I7 material in </span><span class="extract"><span class="extract-syntax">(+ ... +)</span></span><span class="comment-syntax"> notation</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">INLINE_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> an inline command such as </span><span class="extract"><span class="extract-syntax">{-my:1}</span></span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">ASM_ARROW_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> the arrow sign </span><span class="extract"><span class="extract-syntax">-></span></span><span class="comment-syntax"> used in assembly language only</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">ASM_SP_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> the stack pointer pseudo-variable </span><span class="extract"><span class="extract-syntax">sp</span></span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">ASM_LABEL_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> the label sign </span><span class="extract"><span class="extract-syntax">?</span></span><span class="comment-syntax"> used in assembly language only</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">ASM_NEGATED_LABEL_ISTT</span><span class="plain-syntax"> </span><span class="comment-syntax"> the label sign </span><span class="extract"><span class="extract-syntax">?~</span></span><span class="comment-syntax"> used in assembly language only</span>
</pre>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">owner</span><span class="plain-syntax">; </span><span class="comment-syntax"> these form a linked list attached to the owner node</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">next</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">ist_type</span><span class="plain-syntax">; </span><span class="comment-syntax"> one of the </span><span class="extract"><span class="extract-syntax">*_ISTT</span></span><span class="comment-syntax"> values above</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">material</span><span class="plain-syntax">; </span><span class="comment-syntax"> textual form of token</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">operation_primitive</span><span class="plain-syntax">; </span><span class="comment-syntax"> </span><span class="extract"><span class="extract-syntax">OPERATOR_ISTT</span></span><span class="comment-syntax"> only: e.g. </span><span class="extract"><span class="extract-syntax">PLUS_BIP</span></span><span class="comment-syntax"> for </span><span class="extract"><span class="extract-syntax">+</span></span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">reserved_word</span><span class="plain-syntax">; </span><span class="comment-syntax"> </span><span class="extract"><span class="extract-syntax">RESERVED_ISTT</span></span><span class="comment-syntax"> only: which one</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">constant_number</span><span class="plain-syntax">; </span><span class="comment-syntax"> </span><span class="extract"><span class="extract-syntax">NUMBER_ISTT</span></span><span class="comment-syntax"> only: if non-negative, value of number</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">inter_name</span><span class="plain-syntax"> *</span><span class="identifier-syntax">as_quoted</span><span class="plain-syntax">; </span><span class="comment-syntax"> </span><span class="extract"><span class="extract-syntax">IDENTIFIER_ISTT</span></span><span class="comment-syntax"> only: the identified symbol if known</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">inline_command</span><span class="plain-syntax">; </span><span class="comment-syntax"> </span><span class="extract"><span class="extract-syntax">INLINE_ISTT</span></span><span class="comment-syntax"> only: one of the </span><span class="extract"><span class="extract-syntax">*_ISINC</span></span><span class="comment-syntax"> values</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">inline_modifiers</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">inline_subcommand</span><span class="plain-syntax">; </span><span class="comment-syntax"> </span><span class="extract"><span class="extract-syntax">INLINE_ISTT</span></span><span class="comment-syntax"> only: one of the </span><span class="extract"><span class="extract-syntax">*_ISINSC</span></span><span class="comment-syntax"> values</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">bracing</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">command</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">operand</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">operand2</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> #</span><span class="identifier-syntax">ifdef</span><span class="plain-syntax"> </span><span class="identifier-syntax">CORE_MODULE</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">property</span><span class="plain-syntax"> *</span><span class="identifier-syntax">extremal_property</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">extremal_property_sign</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> #</span><span class="identifier-syntax">endif</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">preinsert</span><span class="plain-syntax">; </span><span class="comment-syntax"> fleeting markers only</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">postinsert</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">CLASS_DEFINITION</span>
<span class="plain-syntax">} </span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax">;</span>
</pre>
<ul class="endnotetexts"><li>The structure inter_schema_token is accessed in 2/tkn, 2/rmf, 2/eis, 2/if and here.</li></ul>
<p class="commentary firstcommentary"><a id="SP10" class="paragraph-anchor"></a><b>§10. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="function-syntax">InterSchemas::new_token</span><button class="popup" onclick="togglePopup('usagePopup6')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup6">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::new_token</span></span>:<br/>Tokenisation - <a href="2-tkn.html#SP1_3">§1.3</a>, <a href="2-tkn.html#SP1_4_1">§1.4.1</a>, <a href="2-tkn.html#SP1_5_1">§1.5.1</a>, <a href="2-tkn.html#SP1_6">§1.6</a>, <a href="2-tkn.html#SP1_3_1_4">§1.3.1.4</a><br/>Ramification - <a href="2-rmf.html#SP3">§3</a>, <a href="2-rmf.html#SP13_1_7_1_1">§13.1.7.1.1</a>, <a href="2-rmf.html#SP13_1_7_2">§13.1.7.2</a>, <a href="2-rmf.html#SP13_4_2">§13.4.2</a>, <a href="2-rmf.html#SP13_4_4">§13.4.4</a>, <a href="2-rmf.html#SP24">§24</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">type</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">material</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">inter_ti</span><span class="plain-syntax"> </span><span class="identifier-syntax">operation_primitive</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">reserved_word</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">n</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">t</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">ist_type</span><span class="plain-syntax"> = </span><span class="identifier-syntax">type</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">material</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::duplicate</span><span class="plain-syntax">(</span><span class="identifier-syntax">material</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">bracing</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">command</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">operand</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">operand2</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> #</span><span class="identifier-syntax">ifdef</span><span class="plain-syntax"> </span><span class="identifier-syntax">CORE_MODULE</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">extremal_property</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">; </span><span class="comment-syntax"> that is, none given</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">extremal_property_sign</span><span class="plain-syntax"> = </span><span class="identifier-syntax">MEASURE_T_EXACTLY</span><span class="plain-syntax">; </span><span class="comment-syntax"> that is, none given</span>
<span class="plain-syntax"> #</span><span class="identifier-syntax">endif</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">inline_command</span><span class="plain-syntax"> = </span><span class="constant-syntax">no_ISINC</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">inline_subcommand</span><span class="plain-syntax"> = </span><span class="constant-syntax">no_ISINSC</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">owner</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">operation_primitive</span><span class="plain-syntax"> = </span><span class="identifier-syntax">operation_primitive</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">as_quoted</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">reserved_word</span><span class="plain-syntax"> = </span><span class="identifier-syntax">reserved_word</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">constant_number</span><span class="plain-syntax"> = </span><span class="identifier-syntax">n</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">preinsert</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">postinsert</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP11" class="paragraph-anchor"></a><b>§11. </b>The value of <span class="extract"><span class="extract-syntax">reserved_word</span></span>, in a <span class="extract"><span class="extract-syntax">RESERVED_ISTT</span></span> node, must be one of:
</p>
<pre class="definitions code-font"><span class="definition-keyword">enum</span> <span class="constant-syntax">IF_I6RW</span><span class="plain-syntax"> </span><span class="identifier-syntax">from</span><span class="plain-syntax"> </span><span class="constant-syntax">1</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">ELSE_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">STYLE_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">RETURN_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">RTRUE_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">RFALSE_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">FOR_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">OBJECTLOOP_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">WHILE_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">DO_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">UNTIL_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">PRINT_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">PRINTRET_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">NEWLINE_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">GIVE_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">MOVE_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">REMOVE_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">JUMP_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">SWITCH_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">DEFAULT_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">FONT_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">BREAK_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">CONTINUE_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">QUIT_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">RESTORE_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">SPACES_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">READ_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">INVERSION_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">IFDEF_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">IFNDEF_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">IFTRUE_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">IFFALSE_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">IFNOT_I6RW</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">ENDIF_I6RW</span>
</pre>
<p class="commentary firstcommentary"><a id="SP12" class="paragraph-anchor"></a><b>§12. </b>The value of <span class="extract"><span class="extract-syntax">inline_command</span></span>, in an <span class="extract"><span class="extract-syntax">INLINE_ISTT</span></span> node, must be one of:
</p>
<pre class="definitions code-font"><span class="definition-keyword">enum</span> <span class="constant-syntax">no_ISINC</span><span class="plain-syntax"> </span><span class="identifier-syntax">from</span><span class="plain-syntax"> </span><span class="constant-syntax">1</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">primitive_definition_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">new_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">new_list_of_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">printing_routine_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">next_routine_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">previous_routine_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">ranger_routine_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">strong_kind_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">weak_kind_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">backspace_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">erase_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">open_brace_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">close_brace_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">label_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">counter_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">counter_storage_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">counter_up_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">counter_down_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">counter_makes_array_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">by_reference_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">by_reference_blank_out_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">reference_exists_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">lvalue_by_reference_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">by_value_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">box_quotation_text_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">try_action_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">try_action_silently_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">return_value_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">return_value_from_rule_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">property_holds_block_value_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">mark_event_used_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">my_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">unprotect_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">copy_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">initialise_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">matches_description_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">now_matches_description_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">arithmetic_operation_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">say_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">show_me_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">segment_count_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">final_segment_marker_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">list_together_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">rescale_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">unknown_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">substitute_ISINC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">combine_ISINC</span>
</pre>
<p class="commentary firstcommentary"><a id="SP13" class="paragraph-anchor"></a><b>§13. </b>The value of <span class="extract"><span class="extract-syntax">inline_subcommand</span></span>, in an <span class="extract"><span class="extract-syntax">INLINE_ISTT</span></span> node, must be one of:
</p>
<pre class="definitions code-font"><span class="definition-keyword">enum</span> <span class="constant-syntax">no_ISINSC</span><span class="plain-syntax"> </span><span class="identifier-syntax">from</span><span class="plain-syntax"> </span><span class="constant-syntax">1</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">unarticled_ISINSC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">articled_ISINSC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">repeat_through_ISINSC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">repeat_through_list_ISINSC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">number_of_ISINSC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">random_of_ISINSC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">total_of_ISINSC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">extremal_ISINSC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">function_application_ISINSC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">description_application_ISINSC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">solve_equation_ISINSC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">switch_ISINSC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">break_ISINSC</span>
<span class="definition-keyword">enum</span> <span class="constant-syntax">verbose_checking_ISINSC</span>
</pre>
<p class="commentary firstcommentary"><a id="SP14" class="paragraph-anchor"></a><b>§14. Token insertion. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InterSchemas::add_token</span><button class="popup" onclick="togglePopup('usagePopup7')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup7">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::add_token</span></span>:<br/>Tokenisation - <a href="2-tkn.html#SP1_3">§1.3</a>, <a href="2-tkn.html#SP1_4_1">§1.4.1</a>, <a href="2-tkn.html#SP1_5_1">§1.5.1</a>, <a href="2-tkn.html#SP1_6">§1.6</a>, <a href="2-tkn.html#SP1_3_1_4">§1.3.1.4</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema</span><span class="plain-syntax"> *</span><span class="identifier-syntax">sch</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">t</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">node_tree</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">node_tree</span><span class="plain-syntax"> = </span><a href="2-is.html#SP4" class="function-link"><span class="function-syntax">InterSchemas::new_node</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">, </span><span class="constant-syntax">EXPRESSION_ISNT</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-is.html#SP14" class="function-link"><span class="function-syntax">InterSchemas::add_token_to_node</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">node_tree</span><span class="plain-syntax">, </span><span class="identifier-syntax">t</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InterSchemas::add_token_to_node</span><button class="popup" onclick="togglePopup('usagePopup8')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup8">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::add_token_to_node</span></span>:<br/>Ramification - <a href="2-rmf.html#SP13_1_7_2">§13.1.7.2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">isn</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">t</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">expression_tokens</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">expression_tokens</span><span class="plain-syntax"> = </span><span class="identifier-syntax">t</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">p</span><span class="plain-syntax"> = </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">expression_tokens</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">while</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">p</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">p</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">)) </span><span class="identifier-syntax">p</span><span class="plain-syntax"> = </span><span class="identifier-syntax">p</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">p</span><span class="plain-syntax">-></span><span class="identifier-syntax">next</span><span class="plain-syntax"> = </span><span class="identifier-syntax">t</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">owner</span><span class="plain-syntax"> = </span><span class="identifier-syntax">isn</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InterSchemas::add_token_after</span><button class="popup" onclick="togglePopup('usagePopup9')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup9">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::add_token_after</span></span>:<br/>Ramification - <a href="2-rmf.html#SP3">§3</a>, <a href="2-rmf.html#SP13_1_7_1_1">§13.1.7.1.1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">t</span><span class="plain-syntax">, </span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">existing</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">existing</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"can't add after null element"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">was</span><span class="plain-syntax"> = </span><span class="identifier-syntax">existing</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">existing</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax"> = </span><span class="identifier-syntax">t</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax"> = </span><span class="identifier-syntax">was</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">owner</span><span class="plain-syntax"> = </span><span class="identifier-syntax">existing</span><span class="plain-syntax">-></span><span class="element-syntax">owner</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP15" class="paragraph-anchor"></a><b>§15. </b>When more drastic things happen, we need to fix all the ownership links:
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InterSchemas::changed_tokens_on</span><button class="popup" onclick="togglePopup('usagePopup10')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup10">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::changed_tokens_on</span></span>:<br/>Ramification - <a href="2-rmf.html#SP4">§4</a>, <a href="2-rmf.html#SP5">§5</a>, <a href="2-rmf.html#SP7">§7</a>, <a href="2-rmf.html#SP8">§8</a>, <a href="2-rmf.html#SP10">§10</a>, <a href="2-rmf.html#SP12">§12</a>, <a href="2-rmf.html#SP13_2">§13.2</a>, <a href="2-rmf.html#SP13_4_1">§13.4.1</a>, <a href="2-rmf.html#SP13_4_3">§13.4.3</a>, <a href="2-rmf.html#SP13_4_4">§13.4.4</a>, <a href="2-rmf.html#SP17_1">§17.1</a>, <a href="2-rmf.html#SP18">§18</a>, <a href="2-rmf.html#SP22_3">§22.3</a>, <a href="2-rmf.html#SP22_4">§22.4</a>, <a href="2-rmf.html#SP23_1_1_1">§23.1.1.1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">isn</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">l</span><span class="plain-syntax"> = </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">expression_tokens</span><span class="plain-syntax">; </span><span class="identifier-syntax">l</span><span class="plain-syntax">; </span><span class="identifier-syntax">l</span><span class="plain-syntax">=</span><span class="identifier-syntax">l</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">l</span><span class="plain-syntax">-></span><span class="element-syntax">owner</span><span class="plain-syntax"> = </span><span class="identifier-syntax">isn</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP16" class="paragraph-anchor"></a><b>§16. </b>These are useful for scanning tokens:
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">InterSchemas::opening_reserved_word</span><button class="popup" onclick="togglePopup('usagePopup11')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup11">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::opening_reserved_word</span></span>:<br/>Ramification - <a href="2-rmf.html#SP13_1">§13.1</a>, <a href="2-rmf.html#SP13_1_1">§13.1.1</a>, <a href="2-rmf.html#SP13_1_4">§13.1.4</a>, <a href="2-rmf.html#SP13_1_7">§13.1.7</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">node</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">f</span><span class="plain-syntax"> = </span><a href="2-is.html#SP16" class="function-link"><span class="function-syntax">InterSchemas::first_dark_token</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">node</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">f</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">f</span><span class="plain-syntax">-></span><span class="element-syntax">ist_type</span><span class="plain-syntax"> == </span><span class="constant-syntax">RESERVED_ISTT</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">f</span><span class="plain-syntax">-></span><span class="element-syntax">reserved_word</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="function-syntax">InterSchemas::opening_directive_word</span><button class="popup" onclick="togglePopup('usagePopup12')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup12">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::opening_directive_word</span></span>:<br/>Ramification - <a href="2-rmf.html#SP13_2">§13.2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">node</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">f</span><span class="plain-syntax"> = </span><a href="2-is.html#SP16" class="function-link"><span class="function-syntax">InterSchemas::first_dark_token</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">node</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">f</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">f</span><span class="plain-syntax">-></span><span class="element-syntax">ist_type</span><span class="plain-syntax"> == </span><span class="constant-syntax">DIRECTIVE_ISTT</span><span class="plain-syntax">)) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">f</span><span class="plain-syntax">-></span><span class="element-syntax">reserved_word</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="constant-syntax">0</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="function-syntax">InterSchemas::first_dark_token</span><button class="popup" onclick="togglePopup('usagePopup13')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup13">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::first_dark_token</span></span>:<br/>Ramification - <a href="2-rmf.html#SP13">§13</a>, <a href="2-rmf.html#SP13_1_4">§13.1.4</a>, <a href="2-rmf.html#SP13_3">§13.3</a>, <a href="2-rmf.html#SP17">§17</a>, <a href="2-rmf.html#SP22">§22</a>, <a href="2-rmf.html#SP22_1">§22.1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">node</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">node</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">n</span><span class="plain-syntax"> = </span><span class="identifier-syntax">node</span><span class="plain-syntax">-></span><span class="element-syntax">expression_tokens</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">while</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">n</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">n</span><span class="plain-syntax">-></span><span class="element-syntax">ist_type</span><span class="plain-syntax"> == </span><span class="constant-syntax">WHITE_SPACE_ISTT</span><span class="plain-syntax">)) </span><span class="identifier-syntax">n</span><span class="plain-syntax"> = </span><span class="identifier-syntax">n</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">n</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="function-syntax">InterSchemas::next_dark_token</span><button class="popup" onclick="togglePopup('usagePopup14')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup14">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::next_dark_token</span></span>:<br/>Ramification - <a href="2-rmf.html#SP13_1_3">§13.1.3</a>, <a href="2-rmf.html#SP13_1_5">§13.1.5</a>, <a href="2-rmf.html#SP13_1_7">§13.1.7</a>, <a href="2-rmf.html#SP13_1_8">§13.1.8</a>, <a href="2-rmf.html#SP17">§17</a>, <a href="2-rmf.html#SP22">§22</a>, <a href="2-rmf.html#SP22_1">§22.1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">t</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">t</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">n</span><span class="plain-syntax"> = </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">while</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">n</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">n</span><span class="plain-syntax">-></span><span class="element-syntax">ist_type</span><span class="plain-syntax"> == </span><span class="constant-syntax">WHITE_SPACE_ISTT</span><span class="plain-syntax">)) </span><span class="identifier-syntax">n</span><span class="plain-syntax"> = </span><span class="identifier-syntax">n</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">n</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="function-syntax">InterSchemas::second_dark_token</span><button class="popup" onclick="togglePopup('usagePopup15')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup15">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::second_dark_token</span></span>:<br/>Ramification - <a href="2-rmf.html#SP13_1_1">§13.1.1</a>, <a href="2-rmf.html#SP13_1_2">§13.1.2</a>, <a href="2-rmf.html#SP13_1_3">§13.1.3</a>, <a href="2-rmf.html#SP13_1_4">§13.1.4</a>, <a href="2-rmf.html#SP13_1_5">§13.1.5</a>, <a href="2-rmf.html#SP13_1_6">§13.1.6</a>, <a href="2-rmf.html#SP13_1_7">§13.1.7</a>, <a href="2-rmf.html#SP13_1_8">§13.1.8</a>, <a href="2-rmf.html#SP13_2">§13.2</a>, <a href="2-rmf.html#SP13_4_1">§13.4.1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">node</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><a href="2-is.html#SP16" class="function-link"><span class="function-syntax">InterSchemas::next_dark_token</span></a><span class="plain-syntax">(</span><a href="2-is.html#SP16" class="function-link"><span class="function-syntax">InterSchemas::first_dark_token</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">node</span><span class="plain-syntax">));</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP17" class="paragraph-anchor"></a><b>§17. Logging. </b>It is invaluable to be able to see compiled schemas in the debugging log, so
we go to some trouble here.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InterSchemas::log</span><button class="popup" onclick="togglePopup('usagePopup16')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup16">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::log</span></span>:<br/>Building Module - <a href="1-bm.html#SP3_3">§3.3</a></span></button><span class="plain-syntax">(</span><span class="identifier-syntax">OUTPUT_STREAM</span><span class="plain-syntax">, </span><span class="reserved-syntax">void</span><span class="plain-syntax"> *</span><span class="identifier-syntax">vis</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">inter_schema</span><span class="plain-syntax"> *</span><span class="identifier-syntax">sch</span><span class="plain-syntax"> = (</span><span class="reserved-syntax">inter_schema</span><span class="plain-syntax"> *) </span><span class="identifier-syntax">vis</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">sch</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"<null schema>\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">node_tree</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"<schema without nodes>\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><a href="2-is.html#SP17" class="function-link"><span class="function-syntax">InterSchemas::log_depth</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">node_tree</span><span class="plain-syntax">, </span><span class="constant-syntax">0</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InterSchemas::log_depth</span><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">isn</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">depth</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (; </span><span class="identifier-syntax">isn</span><span class="plain-syntax">; </span><span class="identifier-syntax">isn</span><span class="plain-syntax">=</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">next_node</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><a href="2-is.html#SP17" class="function-link"><span class="function-syntax">InterSchemas::log_just</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">isn</span><span class="plain-syntax">, </span><span class="identifier-syntax">depth</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InterSchemas::log_just</span><button class="popup" onclick="togglePopup('usagePopup17')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup17">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::log_just</span></span>:<br/>Emitting Inter Schemas - <a href="2-eis.html#SP2_1">§2.1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">isn</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">depth</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">blocked_by_conditional</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"XX"</span><span class="plain-syntax">); </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">" "</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">d</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">; </span><span class="identifier-syntax">d</span><span class="plain-syntax"> < </span><span class="identifier-syntax">depth</span><span class="plain-syntax">; </span><span class="identifier-syntax">d</span><span class="plain-syntax">++) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">" "</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">switch</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">isn_type</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">STATEMENT_ISNT:</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"* (statement) %S\n"</span><span class="plain-syntax">, </span><a href="1-ip.html#SP5" class="function-link"><span class="function-syntax">Primitives::BIP_to_name</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">isn_clarifier</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">OPERATION_ISNT:</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"* (operation) %S\n"</span><span class="plain-syntax">, </span><a href="1-ip.html#SP5" class="function-link"><span class="function-syntax">Primitives::BIP_to_name</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">isn_clarifier</span><span class="plain-syntax">));</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">CODE_ISNT:</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"* (code)"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">unclosed</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">" <"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">unopened</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">" >"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">EVAL_ISNT:</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"* (eval)\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">ASSEMBLY_ISNT:</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"* (assembly)\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">DIRECTIVE_ISNT:</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"* (directive) "</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">switch</span><span class="plain-syntax">(</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">dir_clarifier</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">IFDEF_I6RW:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"#ifdef"</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">IFNDEF_I6RW:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"#ifndef"</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">IFTRUE_I6RW:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"#iftrue"</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">IFFALSE_I6RW:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"#iffalse"</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">IFNOT_I6RW:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"#ifnot"</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">ENDIF_I6RW:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"#endif"</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">default:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"<unknown>"</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">LABEL_ISNT:</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"* (label)\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">CALL_ISNT:</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"* (call)\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">MESSAGE_ISNT:</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"* (message)\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">CALLMESSAGE_ISNT:</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"* (call-message)\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">SUBEXPRESSION_ISNT:</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"* (subexpression)\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">EXPRESSION_ISNT:</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"* (expr)"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">semicolon_terminated</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">" ;"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">unclosed</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">" <"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">unopened</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">" >"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">expression_tokens</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">" - empty"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">t</span><span class="plain-syntax"> = </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">expression_tokens</span><span class="plain-syntax">; </span><span class="identifier-syntax">t</span><span class="plain-syntax">; </span><span class="identifier-syntax">t</span><span class="plain-syntax">=</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">d</span><span class="plain-syntax"> = </span><span class="constant-syntax">0</span><span class="plain-syntax">; </span><span class="identifier-syntax">d</span><span class="plain-syntax"> < </span><span class="identifier-syntax">depth</span><span class="plain-syntax"> + </span><span class="constant-syntax">1</span><span class="plain-syntax">; </span><span class="identifier-syntax">d</span><span class="plain-syntax">++) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">" "</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><a href="2-is.html#SP17" class="function-link"><span class="function-syntax">InterSchemas::log_ist</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">t</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax"> != </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">owner</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">" !!! ownership incorrect here"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"\n"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><a href="2-is.html#SP17" class="function-link"><span class="function-syntax">InterSchemas::log_depth</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="identifier-syntax">child_node</span><span class="plain-syntax">, </span><span class="identifier-syntax">depth</span><span class="plain-syntax">+1);</span>
<span class="plain-syntax">}</span>
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InterSchemas::log_ist</span><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">t</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">t</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">) { </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"<NULL-IST>"</span><span class="plain-syntax">); </span><span class="reserved-syntax">return</span><span class="plain-syntax">; }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">switch</span><span class="plain-syntax"> (</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">ist_type</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">RAW_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"RAW "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">OPERATOR_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"OPERATOR "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">OPCODE_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"OPCODE "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">DIRECTIVE_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"DIRECTIVE "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">IDENTIFIER_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"IDENTIFIER "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">RESERVED_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"RESERVED "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">NUMBER_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"NUMBER "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">BIN_NUMBER_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"BIN_NUMBER "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">HEX_NUMBER_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"HEX_NUMBER "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">REAL_NUMBER_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"REAL_NUMBER "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">DQUOTED_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"DQUOTED "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">SQUOTED_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"SQUOTED "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">WHITE_SPACE_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"WHITE_SPACE "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">DIVIDER_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"DIVIDER "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">OPEN_ROUND_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"OPEN_ROUND "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">CLOSE_ROUND_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"CLOSE_ROUND "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">OPEN_BRACE_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"OPEN_BRACE "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">CLOSE_BRACE_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"CLOSE_BRACE "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">COMMA_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"COMMA "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">COLON_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"COLON "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">I7_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"I7 "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">INLINE_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"INLINE "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">ASM_ARROW_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"ASM_ARROW "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">ASM_SP_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"ASM_SP "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">ASM_LABEL_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"ASM_LABEL "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">ASM_NEGATED_LABEL_ISTT:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"NEGASM_LABEL "</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">default:</span><span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"<unknown>"</span><span class="plain-syntax">); </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"%S"</span><span class="plain-syntax">, </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">material</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">inline_modifiers</span><span class="plain-syntax"> & </span><span class="constant-syntax">GIVE_KIND_ID_ISSBM</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">" GIVE_KIND_ID"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">inline_modifiers</span><span class="plain-syntax"> & </span><span class="constant-syntax">GIVE_COMPARISON_ROUTINE_ISSBM</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">" GIVE_COMPARISON_ROUTINE"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">inline_modifiers</span><span class="plain-syntax"> & </span><span class="constant-syntax">DEREFERENCE_PROPERTY_ISSBM</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">" DEREFERENCE_PROPERTY"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">inline_modifiers</span><span class="plain-syntax"> & </span><span class="constant-syntax">ADOPT_LOCAL_STACK_FRAME_ISSBM</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">" ADOPT_LOCAL_STACK_FRAME"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">inline_modifiers</span><span class="plain-syntax"> & </span><span class="constant-syntax">CAST_TO_KIND_OF_OTHER_TERM_ISSBM</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">" CAST_TO_KIND_OF_OTHER_TERM"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="identifier-syntax">inline_modifiers</span><span class="plain-syntax"> & </span><span class="constant-syntax">BY_REFERENCE_ISSBM</span><span class="plain-syntax">) </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">" BY_REFERENCE"</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP18" class="paragraph-anchor"></a><b>§18. Lint. </b>As can be seen, the <span class="extract"><span class="extract-syntax">inter_schema</span></span> structure is quite complicated, and there
are numerous invariants it has to satisfy. As a precaution, then, we check that
all of these invariants hold before shipping out a compiled schema. This is
where the check is done:
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InterSchemas::lint</span><button class="popup" onclick="togglePopup('usagePopup18')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup18">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::lint</span></span>:<br/>Parsing Inter Schemas - <a href="2-pis.html#SP5">§5</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema</span><span class="plain-syntax"> *</span><span class="identifier-syntax">sch</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">sch</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">parsing_errors</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">)) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">err</span><span class="plain-syntax"> = </span><a href="2-is.html#SP18" class="function-link"><span class="function-syntax">InterSchemas::lint_isn</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">node_tree</span><span class="plain-syntax">, </span><span class="constant-syntax">0</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">err</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"Lint fail: %S\n$1\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">err</span><span class="plain-syntax">, </span><span class="identifier-syntax">sch</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">STDERR</span><span class="plain-syntax">, </span><span class="string-syntax">"Lint fail: %S\n%S\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">err</span><span class="plain-syntax">, </span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">converted_from</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"inter schema failed lint"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax">}</span>
<span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="function-syntax">InterSchemas::lint_isn</span><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">isn</span><span class="plain-syntax">, </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">depth</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (; </span><span class="identifier-syntax">isn</span><span class="plain-syntax">; </span><span class="identifier-syntax">isn</span><span class="plain-syntax">=</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">next_node</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">isn_type</span><span class="plain-syntax"> == </span><span class="constant-syntax">EXPRESSION_ISNT</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">int</span><span class="plain-syntax"> </span><span class="identifier-syntax">asm</span><span class="plain-syntax"> = </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">for</span><span class="plain-syntax"> (</span><span class="reserved-syntax">inter_schema_token</span><span class="plain-syntax"> *</span><span class="identifier-syntax">t</span><span class="plain-syntax"> = </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">expression_tokens</span><span class="plain-syntax">; </span><span class="identifier-syntax">t</span><span class="plain-syntax">; </span><span class="identifier-syntax">t</span><span class="plain-syntax">=</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">switch</span><span class="plain-syntax"> (</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">ist_type</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">OPCODE_ISTT:</span><span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">t</span><span class="plain-syntax"> == </span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">expression_tokens</span><span class="plain-syntax">) </span><span class="identifier-syntax">asm</span><span class="plain-syntax"> = </span><span class="identifier-syntax">TRUE</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">else</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"contains loose assembler"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">break</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">RAW_ISTT:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"contains raw node"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">OPEN_BRACE_ISTT:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"contains open-brace node"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">CLOSE_BRACE_ISTT:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"contains close-brace node"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">OPEN_ROUND_ISTT:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"contains open-round node"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">CLOSE_ROUND_ISTT:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"contains close-round node"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">COMMA_ISTT:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"contains comma node"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">DIVIDER_ISTT:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"contains divider node"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">RESERVED_ISTT:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"contains reserved word node"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">COLON_ISTT:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"contains colon node"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">case</span><span class="plain-syntax"> </span><span class="identifier-syntax">OPERATOR_ISTT:</span><span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"contains operator node"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">ist_type</span><span class="plain-syntax"> == </span><span class="constant-syntax">INLINE_ISTT</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">inline_command</span><span class="plain-syntax"> == </span><span class="constant-syntax">open_brace_ISINC</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"contains manual open-brace"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">ist_type</span><span class="plain-syntax"> == </span><span class="constant-syntax">INLINE_ISTT</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">inline_command</span><span class="plain-syntax"> == </span><span class="constant-syntax">close_brace_ISINC</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"contains manual close-brace"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">ist_type</span><span class="plain-syntax"> == </span><span class="constant-syntax">NUMBER_ISTT</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">) &&</span>
<span class="plain-syntax"> (</span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">next</span><span class="plain-syntax">-></span><span class="element-syntax">ist_type</span><span class="plain-syntax"> == </span><span class="constant-syntax">NUMBER_ISTT</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">asm</span><span class="plain-syntax"> == </span><span class="identifier-syntax">FALSE</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"two consecutive numbers"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax"> != </span><span class="identifier-syntax">t</span><span class="plain-syntax">-></span><span class="element-syntax">owner</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"ownership linkage broken"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">child_node</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"expression has child nodes"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> } </span><span class="reserved-syntax">else</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">expression_tokens</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"non-expression has elements"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">child_node</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">child_node</span><span class="plain-syntax">-></span><span class="element-syntax">parent_node</span><span class="plain-syntax"> != </span><span class="identifier-syntax">isn</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"child-parent linkage broken"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> ((</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">isn_clarifier</span><span class="plain-syntax">) && (</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">expression_tokens</span><span class="plain-syntax">))</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">I</span><span class="string-syntax">"ambiguous is-node"</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">R</span><span class="plain-syntax"> = </span><a href="2-is.html#SP18" class="function-link"><span class="function-syntax">InterSchemas::lint_isn</span></a><span class="plain-syntax">(</span><span class="identifier-syntax">isn</span><span class="plain-syntax">-></span><span class="element-syntax">child_node</span><span class="plain-syntax">, </span><span class="identifier-syntax">depth</span><span class="plain-syntax">+1);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">R</span><span class="plain-syntax">) </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">R</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">return</span><span class="plain-syntax"> </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">;</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP19" class="paragraph-anchor"></a><b>§19. Errors. </b>Errors can be detected both when parsing text into schemas, and also when emitting
code from them. In either case, the following is used to attach error message(s)
to the schema itself.
</p>
<p class="commentary">Note that the <span class="extract"><span class="extract-syntax">parsing_errors</span></span> field is null until the first error is detected —
which, of course, it usually isn't.
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">typedef</span><span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="reserved-syntax">schema_parsing_error</span><span class="plain-syntax"> {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">struct</span><span class="plain-syntax"> </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">message</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">CLASS_DEFINITION</span>
<span class="plain-syntax">} </span><span class="reserved-syntax">schema_parsing_error</span><span class="plain-syntax">;</span>
</pre>
<ul class="endnotetexts"><li>The structure schema_parsing_error is private to this section.</li></ul>
<p class="commentary firstcommentary"><a id="SP20" class="paragraph-anchor"></a><b>§20. </b></p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InterSchemas::throw_error</span><button class="popup" onclick="togglePopup('usagePopup19')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup19">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::throw_error</span></span>:<br/>Tokenisation - <a href="2-tkn.html#SP1_6">§1.6</a><br/>Ramification - <a href="2-rmf.html#SP13_1_1">§13.1.1</a>, <a href="2-rmf.html#SP13_1_2">§13.1.2</a>, <a href="2-rmf.html#SP13_1_5">§13.1.5</a>, <a href="2-rmf.html#SP14">§14</a>, <a href="2-rmf.html#SP14_1">§14.1</a>, <a href="2-rmf.html#SP15">§15</a>, <a href="2-rmf.html#SP22_5">§22.5</a>, <a href="2-rmf.html#SP26">§26</a><br/>Emitting Inter Schemas - <a href="2-eis.html#SP2_1_1">§2.1.1</a>, <a href="2-eis.html#SP2_1_2">§2.1.2</a>, <a href="2-eis.html#SP3_1_1">§3.1.1</a>, <a href="2-eis.html#SP3_1_3">§3.1.3</a>, <a href="2-eis.html#SP3_1_4">§3.1.4</a>, <a href="2-eis.html#SP3_1_5">§3.1.5</a>, <a href="2-eis.html#SP3_1_6">§3.1.6</a>, <a href="2-eis.html#SP3_1_7_2">§3.1.7.2</a>, <a href="2-eis.html#SP3_1_8">§3.1.8</a>, <a href="2-eis.html#SP3_1_11">§3.1.11</a>, <a href="2-eis.html#SP3_1_11_1">§3.1.11.1</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema_node</span><span class="plain-syntax"> *</span><span class="identifier-syntax">at</span><span class="plain-syntax">, </span><span class="identifier-syntax">text_stream</span><span class="plain-syntax"> *</span><span class="identifier-syntax">message</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">at</span><span class="plain-syntax">-></span><span class="element-syntax">parent_schema</span><span class="plain-syntax">-></span><span class="element-syntax">parsing_errors</span><span class="plain-syntax"> == </span><span class="identifier-syntax">NULL</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">at</span><span class="plain-syntax">-></span><span class="element-syntax">parent_schema</span><span class="plain-syntax">-></span><span class="element-syntax">parsing_errors</span><span class="plain-syntax"> = </span><span class="identifier-syntax">NEW_LINKED_LIST</span><span class="plain-syntax">(</span><span class="reserved-syntax">schema_parsing_error</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">schema_parsing_error</span><span class="plain-syntax"> *</span><span class="identifier-syntax">err</span><span class="plain-syntax"> = </span><span class="identifier-syntax">CREATE</span><span class="plain-syntax">(</span><span class="reserved-syntax">schema_parsing_error</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">err</span><span class="plain-syntax">-></span><span class="element-syntax">message</span><span class="plain-syntax"> = </span><span class="identifier-syntax">Str::duplicate</span><span class="plain-syntax">(</span><span class="identifier-syntax">message</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">ADD_TO_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">err</span><span class="plain-syntax">, </span><span class="reserved-syntax">schema_parsing_error</span><span class="plain-syntax">, </span><span class="identifier-syntax">at</span><span class="plain-syntax">-></span><span class="element-syntax">parent_schema</span><span class="plain-syntax">-></span><span class="element-syntax">parsing_errors</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"Schema error: %S\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">message</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOG</span><span class="plain-syntax">(</span><span class="string-syntax">"$1\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">at</span><span class="plain-syntax">-></span><span class="element-syntax">parent_schema</span><span class="plain-syntax">);</span>
<span class="plain-syntax">}</span>
</pre>
<p class="commentary firstcommentary"><a id="SP21" class="paragraph-anchor"></a><b>§21. </b>And this is an especially drastic way to deal with such errors:
</p>
<pre class="displayed-code all-displayed-code code-font">
<span class="reserved-syntax">void</span><span class="plain-syntax"> </span><span class="function-syntax">InterSchemas::internal_error_on_schema_errors</span><button class="popup" onclick="togglePopup('usagePopup20')"><span class="comment-syntax">?</span><span class="popuptext" id="usagePopup20">Usage of <span class="code-font"><span class="function-syntax">InterSchemas::internal_error_on_schema_errors</span></span>:<br/>Parsing Inter Schemas - <a href="2-pis.html#SP2">§2</a></span></button><span class="plain-syntax">(</span><span class="reserved-syntax">inter_schema</span><span class="plain-syntax"> *</span><span class="identifier-syntax">sch</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">if</span><span class="plain-syntax"> (</span><span class="identifier-syntax">LinkedLists::len</span><span class="plain-syntax">(</span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">parsing_errors</span><span class="plain-syntax">) > </span><span class="constant-syntax">0</span><span class="plain-syntax">) {</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">STDERR</span><span class="plain-syntax">, </span><span class="string-syntax">"Parsing error(s) in the internal schema '%S':\n"</span><span class="plain-syntax">,</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">converted_from</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="reserved-syntax">schema_parsing_error</span><span class="plain-syntax"> *</span><span class="identifier-syntax">err</span><span class="plain-syntax">;</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">LOOP_OVER_LINKED_LIST</span><span class="plain-syntax">(</span><span class="identifier-syntax">err</span><span class="plain-syntax">, </span><span class="reserved-syntax">schema_parsing_error</span><span class="plain-syntax">, </span><span class="identifier-syntax">sch</span><span class="plain-syntax">-></span><span class="element-syntax">parsing_errors</span><span class="plain-syntax">)</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">WRITE_TO</span><span class="plain-syntax">(</span><span class="identifier-syntax">STDERR</span><span class="plain-syntax">, </span><span class="string-syntax">"- %S\n"</span><span class="plain-syntax">, </span><span class="identifier-syntax">err</span><span class="plain-syntax">-></span><span class="element-syntax">message</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> </span><span class="identifier-syntax">internal_error</span><span class="plain-syntax">(</span><span class="string-syntax">"malformed schema"</span><span class="plain-syntax">);</span>
<span class="plain-syntax"> }</span>
<span class="plain-syntax">}</span>
</pre>
<nav role="progress"><div class="progresscontainer">
<ul class="progressbar"><li class="progressprev"><a href="1-in.html">❮</a></li><li class="progresschapter"><a href="P-wtmd.html">P</a></li><li class="progresschapter"><a href="1-bm.html">1</a></li><li class="progresscurrentchapter">2</li><li class="progresscurrent">is</li><li class="progresssection"><a href="2-pis.html">pis</a></li><li class="progresssection"><a href="2-tkn.html">tkn</a></li><li class="progresssection"><a href="2-rmf.html">rmf</a></li><li class="progresssection"><a href="2-i6o.html">i6o</a></li><li class="progresssection"><a href="2-eis.html">eis</a></li><li class="progresssection"><a href="2-if.html">if</a></li><li class="progresschapter"><a href="3-prd.html">3</a></li><li class="progressnext"><a href="2-pis.html">❯</a></li></ul></div>
</nav><!--End of weave-->
</main>
</body>
</html>