nilang 0.4.1

A scripting language interpreter for Advent of Code
Documentation
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
========= FILE ./src/runtime/tests/fixtures/rotate_array/rotate_array.ast.actual ========
[
    FuncDecl {
        ident: 14,
        inputs: Spanned {
            item: [
                15,
            ],
            span: Span {
                start: 16,
                end: 22,
            },
        },
        stmts: [
            Assign {
                dest: Spanned {
                    item: Local(
                        16,
                    ),
                    span: Span {
                        start: 27,
                        end: 33,
                    },
                },
                src: Spanned {
                    item: Index {
                        store: Spanned {
                            item: Value(
                                Ident(
                                    15,
                                ),
                            ),
                            span: Span {
                                start: 34,
                                end: 39,
                            },
                        },
                        key: Spanned {
                            item: Unaop {
                                op: Negate,
                                expr: Spanned {
                                    item: Value(
                                        Int(
                                            1,
                                        ),
                                    ),
                                    span: Span {
                                        start: 41,
                                        end: 42,
                                    },
                                },
                            },
                            span: Span {
                                start: 40,
                                end: 43,
                            },
                        },
                    },
                    span: Span {
                        start: 34,
                        end: 44,
                    },
                },
            },
            Assign {
                dest: Spanned {
                    item: Local(
                        17,
                    ),
                    span: Span {
                        start: 48,
                        end: 51,
                    },
                },
                src: Spanned {
                    item: Value(
                        Int(
                            0,
                        ),
                    ),
                    span: Span {
                        start: 52,
                        end: 54,
                    },
                },
            },
            While {
                cond: Spanned {
                    item: Binop {
                        lhs: Spanned {
                            item: Value(
                                Ident(
                                    17,
                                ),
                            ),
                            span: Span {
                                start: 63,
                                end: 64,
                            },
                        },
                        op: Lt,
                        rhs: Spanned {
                            item: Unaop {
                                op: Len,
                                expr: Spanned {
                                    item: Value(
                                        Ident(
                                            15,
                                        ),
                                    ),
                                    span: Span {
                                        start: 68,
                                        end: 73,
                                    },
                                },
                            },
                            span: Span {
                                start: 67,
                                end: 75,
                            },
                        },
                    },
                    span: Span {
                        start: 63,
                        end: 75,
                    },
                },
                stmts: [
                    Assign {
                        dest: Spanned {
                            item: Local(
                                18,
                            ),
                            span: Span {
                                start: 80,
                                end: 86,
                            },
                        },
                        src: Spanned {
                            item: Index {
                                store: Spanned {
                                    item: Value(
                                        Ident(
                                            15,
                                        ),
                                    ),
                                    span: Span {
                                        start: 87,
                                        end: 92,
                                    },
                                },
                                key: Spanned {
                                    item: Value(
                                        Ident(
                                            17,
                                        ),
                                    ),
                                    span: Span {
                                        start: 93,
                                        end: 95,
                                    },
                                },
                            },
                            span: Span {
                                start: 87,
                                end: 96,
                            },
                        },
                    },
                    Assign {
                        dest: Spanned {
                            item: Index {
                                store: Spanned {
                                    item: Value(
                                        Ident(
                                            15,
                                        ),
                                    ),
                                    span: Span {
                                        start: 101,
                                        end: 106,
                                    },
                                },
                                key: Spanned {
                                    item: Value(
                                        Ident(
                                            17,
                                        ),
                                    ),
                                    span: Span {
                                        start: 107,
                                        end: 109,
                                    },
                                },
                            },
                            span: Span {
                                start: 101,
                                end: 111,
                            },
                        },
                        src: Spanned {
                            item: Value(
                                Ident(
                                    16,
                                ),
                            ),
                            span: Span {
                                start: 112,
                                end: 117,
                            },
                        },
                    },
                    Assign {
                        dest: Spanned {
                            item: Local(
                                16,
                            ),
                            span: Span {
                                start: 122,
                                end: 128,
                            },
                        },
                        src: Spanned {
                            item: Value(
                                Ident(
                                    18,
                                ),
                            ),
                            span: Span {
                                start: 129,
                                end: 134,
                            },
                        },
                    },
                    Assign {
                        dest: Spanned {
                            item: Local(
                                17,
                            ),
                            span: Span {
                                start: 139,
                                end: 142,
                            },
                        },
                        src: Spanned {
                            item: Binop {
                                lhs: Spanned {
                                    item: Value(
                                        Ident(
                                            17,
                                        ),
                                    ),
                                    span: Span {
                                        start: 143,
                                        end: 144,
                                    },
                                },
                                op: Plus,
                                rhs: Spanned {
                                    item: Value(
                                        Int(
                                            1,
                                        ),
                                    ),
                                    span: Span {
                                        start: 147,
                                        end: 149,
                                    },
                                },
                            },
                            span: Span {
                                start: 143,
                                end: 149,
                            },
                        },
                    },
                ],
            },
        ],
    },
    Assign {
        dest: Spanned {
            item: Local(
                19,
            ),
            span: Span {
                start: 157,
                end: 167,
            },
        },
        src: Spanned {
            item: Value(
                List(
                    [
                        Spanned {
                            item: Value(
                                Int(
                                    1,
                                ),
                            ),
                            span: Span {
                                start: 169,
                                end: 171,
                            },
                        },
                        Spanned {
                            item: Value(
                                Int(
                                    2,
                                ),
                            ),
                            span: Span {
                                start: 172,
                                end: 174,
                            },
                        },
                        Spanned {
                            item: Value(
                                Int(
                                    3,
                                ),
                            ),
                            span: Span {
                                start: 175,
                                end: 177,
                            },
                        },
                        Spanned {
                            item: Value(
                                Int(
                                    4,
                                ),
                            ),
                            span: Span {
                                start: 178,
                                end: 180,
                            },
                        },
                    ],
                ),
            ),
            span: Span {
                start: 168,
                end: 181,
            },
        },
    },
    Expr(
        Spanned {
            item: Call {
                calle: Spanned {
                    item: Value(
                        Ident(
                            14,
                        ),
                    ),
                    span: Span {
                        start: 183,
                        end: 195,
                    },
                },
                args: [
                    Spanned {
                        item: Value(
                            Ident(
                                19,
                            ),
                        ),
                        span: Span {
                            start: 196,
                            end: 205,
                        },
                    },
                ],
            },
            span: Span {
                start: 183,
                end: 206,
            },
        },
    ),
    Expr(
        Spanned {
            item: Print(
                Spanned {
                    item: Value(
                        Ident(
                            19,
                        ),
                    ),
                    span: Span {
                        start: 213,
                        end: 222,
                    },
                },
            ),
            span: Span {
                start: 207,
                end: 223,
            },
        },
    ),
    Expr(
        Spanned {
            item: Call {
                calle: Spanned {
                    item: Value(
                        Ident(
                            14,
                        ),
                    ),
                    span: Span {
                        start: 240,
                        end: 252,
                    },
                },
                args: [
                    Spanned {
                        item: Value(
                            Ident(
                                19,
                            ),
                        ),
                        span: Span {
                            start: 253,
                            end: 262,
                        },
                    },
                ],
            },
            span: Span {
                start: 240,
                end: 263,
            },
        },
    ),
    Expr(
        Spanned {
            item: Print(
                Spanned {
                    item: Value(
                        Ident(
                            19,
                        ),
                    ),
                    span: Span {
                        start: 270,
                        end: 279,
                    },
                },
            ),
            span: Span {
                start: 264,
                end: 280,
            },
        },
    ),
    Expr(
        Spanned {
            item: Call {
                calle: Spanned {
                    item: Value(
                        Ident(
                            14,
                        ),
                    ),
                    span: Span {
                        start: 297,
                        end: 309,
                    },
                },
                args: [
                    Spanned {
                        item: Value(
                            Ident(
                                19,
                            ),
                        ),
                        span: Span {
                            start: 310,
                            end: 319,
                        },
                    },
                ],
            },
            span: Span {
                start: 297,
                end: 320,
            },
        },
    ),
    Expr(
        Spanned {
            item: Print(
                Spanned {
                    item: Value(
                        Ident(
                            19,
                        ),
                    ),
                    span: Span {
                        start: 327,
                        end: 336,
                    },
                },
            ),
            span: Span {
                start: 321,
                end: 337,
            },
        },
    ),
    Expr(
        Spanned {
            item: Call {
                calle: Spanned {
                    item: Value(
                        Ident(
                            14,
                        ),
                    ),
                    span: Span {
                        start: 354,
                        end: 366,
                    },
                },
                args: [
                    Spanned {
                        item: Value(
                            Ident(
                                19,
                            ),
                        ),
                        span: Span {
                            start: 367,
                            end: 376,
                        },
                    },
                ],
            },
            span: Span {
                start: 354,
                end: 377,
            },
        },
    ),
    Expr(
        Spanned {
            item: Print(
                Spanned {
                    item: Value(
                        Ident(
                            19,
                        ),
                    ),
                    span: Span {
                        start: 384,
                        end: 393,
                    },
                },
            ),
            span: Span {
                start: 378,
                end: 394,
            },
        },
    ),
]