-
Notifications
You must be signed in to change notification settings - Fork 0
/
builtin.c
741 lines (676 loc) · 22.6 KB
/
builtin.c
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
#include <math.h>
#include <stdlib.h>
#include <string.h>
#include <assert.h>
#include "builtin.h"
#include "compile.h"
#include "jq_parser.h"
#include "bytecode.h"
#include "locfile.h"
#include "jv_unicode.h"
static jv type_error(jv bad, const char* msg) {
jv err = jv_invalid_with_msg(jv_string_fmt("%s %s",
jv_kind_name(jv_get_kind(bad)),
msg));
jv_free(bad);
return err;
}
static jv type_error2(jv bad1, jv bad2, const char* msg) {
jv err = jv_invalid_with_msg(jv_string_fmt("%s and %s %s",
jv_kind_name(jv_get_kind(bad1)),
jv_kind_name(jv_get_kind(bad2)),
msg));
jv_free(bad1);
jv_free(bad2);
return err;
}
static jv f_plus(jv input, jv a, jv b) {
jv_free(input);
if (jv_get_kind(a) == JV_KIND_NULL) {
jv_free(a);
return b;
} else if (jv_get_kind(b) == JV_KIND_NULL) {
jv_free(b);
return a;
} else if (jv_get_kind(a) == JV_KIND_NUMBER && jv_get_kind(b) == JV_KIND_NUMBER) {
return jv_number(jv_number_value(a) +
jv_number_value(b));
} else if (jv_get_kind(a) == JV_KIND_STRING && jv_get_kind(b) == JV_KIND_STRING) {
return jv_string_concat(a, b);
} else if (jv_get_kind(a) == JV_KIND_ARRAY && jv_get_kind(b) == JV_KIND_ARRAY) {
return jv_array_concat(a, b);
} else if (jv_get_kind(a) == JV_KIND_OBJECT && jv_get_kind(b) == JV_KIND_OBJECT) {
return jv_object_merge(a, b);
} else {
return type_error2(a, b, "cannot be added");
}
}
#define LIBM_DD(name) \
static jv f_ ## name(jv input) { \
if (jv_get_kind(input) != JV_KIND_NUMBER) { \
return type_error(input, "number required"); \
} \
jv ret = jv_number(name(jv_number_value(input))); \
jv_free(input); \
return ret; \
}
#include "libm.h"
#undef LIBM_DD
static jv f_negate(jv input) {
if (jv_get_kind(input) != JV_KIND_NUMBER) {
return type_error(input, "cannot be negated");
}
jv ret = jv_number(-jv_number_value(input));
jv_free(input);
return ret;
}
static jv f_startswith(jv a, jv b) {
int alen = jv_string_length_bytes(jv_copy(a));
int blen = jv_string_length_bytes(jv_copy(b));
jv ret;
if (blen <= alen && memcmp(jv_string_value(a), jv_string_value(b), blen) == 0)
ret = jv_true();
else
ret = jv_false();
jv_free(a);
jv_free(b);
return ret;
}
static jv f_endswith(jv a, jv b) {
const char *astr = jv_string_value(a);
const char *bstr = jv_string_value(b);
size_t alen = jv_string_length_bytes(jv_copy(a));
size_t blen = jv_string_length_bytes(jv_copy(b));
jv ret;;
if (alen < blen ||
memcmp(astr + (alen - blen), bstr, blen) != 0)
ret = jv_false();
else
ret = jv_true();
jv_free(a);
jv_free(b);
return ret;
}
static jv f_ltrimstr(jv input, jv left) {
if (jv_get_kind(f_startswith(jv_copy(input), jv_copy(left))) != JV_KIND_TRUE) {
jv_free(left);
return input;
}
/*
* FIXME It'd be better to share the suffix with the original input --
* that we could do, we just can't share prefixes.
*/
int prefixlen = jv_string_length_bytes(left);
jv res = jv_string_sized(jv_string_value(input) + prefixlen,
jv_string_length_bytes(jv_copy(input)) - prefixlen);
jv_free(input);
return res;
}
static jv f_rtrimstr(jv input, jv right) {
if (jv_get_kind(f_endswith(jv_copy(input), jv_copy(right))) == JV_KIND_TRUE) {
jv res = jv_string_sized(jv_string_value(input),
jv_string_length_bytes(jv_copy(input)) - jv_string_length_bytes(right));
jv_free(input);
return res;
}
jv_free(right);
return input;
}
static jv f_minus(jv input, jv a, jv b) {
jv_free(input);
if (jv_get_kind(a) == JV_KIND_NUMBER && jv_get_kind(b) == JV_KIND_NUMBER) {
return jv_number(jv_number_value(a) - jv_number_value(b));
} else if (jv_get_kind(a) == JV_KIND_ARRAY && jv_get_kind(b) == JV_KIND_ARRAY) {
jv out = jv_array();
jv_array_foreach(a, i, x) {
int include = 1;
jv_array_foreach(b, j, y) {
if (jv_equal(jv_copy(x), y)) {
include = 0;
break;
}
}
if (include)
out = jv_array_append(out, jv_copy(x));
jv_free(x);
}
jv_free(a);
jv_free(b);
return out;
} else {
return type_error2(a, b, "cannot be subtracted");
}
}
static jv f_multiply(jv input, jv a, jv b) {
jv_free(input);
if (jv_get_kind(a) == JV_KIND_NUMBER && jv_get_kind(b) == JV_KIND_NUMBER) {
return jv_number(jv_number_value(a) * jv_number_value(b));
} else if (jv_get_kind(a) == JV_KIND_STRING && jv_get_kind(b) == JV_KIND_NUMBER) {
int n;
size_t alen = jv_string_length_bytes(jv_copy(a));
jv res = a;
for (n = jv_number_value(b) - 1; n > 0; n--)
res = jv_string_append_buf(res, jv_string_value(a), alen);
if (n < 0) {
jv_free(a);
return jv_null();
}
return res;
} else if (jv_get_kind(a) == JV_KIND_OBJECT && jv_get_kind(b) == JV_KIND_OBJECT) {
return jv_object_merge_recursive(a, b);
} else {
return type_error2(a, b, "cannot be multiplied");
}
}
static jv f_divide(jv input, jv a, jv b) {
jv_free(input);
if (jv_get_kind(a) == JV_KIND_NUMBER && jv_get_kind(b) == JV_KIND_NUMBER) {
return jv_number(jv_number_value(a) / jv_number_value(b));
} else if (jv_get_kind(a) == JV_KIND_STRING && jv_get_kind(b) == JV_KIND_STRING) {
return jv_string_split(a, b);
} else {
return type_error2(a, b, "cannot be divided");
}
}
static jv f_mod(jv input, jv a, jv b) {
jv_free(input);
if (jv_get_kind(a) == JV_KIND_NUMBER && jv_get_kind(b) == JV_KIND_NUMBER) {
return jv_number((intmax_t)jv_number_value(a) % (intmax_t)jv_number_value(b));
} else {
return type_error2(a, b, "cannot be divided");
}
}
static jv f_equal(jv input, jv a, jv b) {
jv_free(input);
return jv_bool(jv_equal(a, b));
}
static jv f_notequal(jv input, jv a, jv b) {
jv_free(input);
return jv_bool(!jv_equal(a, b));
}
enum cmp_op {
CMP_OP_LESS,
CMP_OP_GREATER,
CMP_OP_LESSEQ,
CMP_OP_GREATEREQ
};
static jv order_cmp(jv input, jv a, jv b, enum cmp_op op) {
jv_free(input);
int r = jv_cmp(a, b);
return jv_bool((op == CMP_OP_LESS && r < 0) ||
(op == CMP_OP_LESSEQ && r <= 0) ||
(op == CMP_OP_GREATEREQ && r >= 0) ||
(op == CMP_OP_GREATER && r > 0));
}
static jv f_less(jv input, jv a, jv b) {
return order_cmp(input, a, b, CMP_OP_LESS);
}
static jv f_greater(jv input, jv a, jv b) {
return order_cmp(input, a, b, CMP_OP_GREATER);
}
static jv f_lesseq(jv input, jv a, jv b) {
return order_cmp(input, a, b, CMP_OP_LESSEQ);
}
static jv f_greatereq(jv input, jv a, jv b) {
return order_cmp(input, a, b, CMP_OP_GREATEREQ);
}
static jv f_contains(jv a, jv b) {
if (jv_get_kind(a) == jv_get_kind(b)) {
return jv_bool(jv_contains(a, b));
} else {
return type_error2(a, b, "cannot have their containment checked");
}
}
static jv f_dump(jv input) {
return jv_dump_string(input, 0);
}
static jv f_json_parse(jv input) {
if (jv_get_kind(input) != JV_KIND_STRING)
return type_error(input, "only strings can be parsed");
jv res = jv_parse_sized(jv_string_value(input),
jv_string_length_bytes(jv_copy(input)));
jv_free(input);
return res;
}
static jv f_tonumber(jv input) {
if (jv_get_kind(input) == JV_KIND_NUMBER) {
return input;
}
if (jv_get_kind(input) == JV_KIND_STRING) {
jv parsed = jv_parse(jv_string_value(input));
if (!jv_is_valid(parsed) || jv_get_kind(parsed) == JV_KIND_NUMBER) {
jv_free(input);
return parsed;
}
}
return type_error(input, "cannot be parsed as a number");
}
static jv f_length(jv input) {
if (jv_get_kind(input) == JV_KIND_ARRAY) {
return jv_number(jv_array_length(input));
} else if (jv_get_kind(input) == JV_KIND_OBJECT) {
return jv_number(jv_object_length(input));
} else if (jv_get_kind(input) == JV_KIND_STRING) {
return jv_number(jv_string_length_codepoints(input));
} else if (jv_get_kind(input) == JV_KIND_NUMBER) {
return jv_number(fabs(jv_number_value(input)));
} else if (jv_get_kind(input) == JV_KIND_NULL) {
jv_free(input);
return jv_number(0);
} else {
return type_error(input, "has no length");
}
}
static jv f_tostring(jv input) {
if (jv_get_kind(input) == JV_KIND_STRING) {
return input;
} else {
return jv_dump_string(input, 0);
}
}
#define CHARS_ALPHANUM "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789"
static jv escape_string(jv input, const char* escapings) {
assert(jv_get_kind(input) == JV_KIND_STRING);
const char* lookup[128] = {0};
const char* p = escapings;
while (*p) {
lookup[(int)*p] = p+1;
p++;
p += strlen(p);
p++;
}
jv ret = jv_string("");
const char* i = jv_string_value(input);
const char* end = i + jv_string_length_bytes(jv_copy(input));
const char* cstart;
int c = 0;
while ((i = jvp_utf8_next((cstart = i), end, &c))) {
assert(c != -1);
if (c < 128 && lookup[c]) {
ret = jv_string_append_str(ret, lookup[c]);
} else {
ret = jv_string_append_buf(ret, cstart, i - cstart);
}
}
jv_free(input);
return ret;
}
static jv f_format(jv input, jv fmt) {
if (jv_get_kind(fmt) != JV_KIND_STRING) {
jv_free(input);
return type_error(fmt, "is not a valid format");
}
const char* fmt_s = jv_string_value(fmt);
if (!strcmp(fmt_s, "json")) {
jv_free(fmt);
return jv_dump_string(input, 0);
} else if (!strcmp(fmt_s, "text")) {
jv_free(fmt);
return f_tostring(input);
} else if (!strcmp(fmt_s, "csv")) {
jv_free(fmt);
if (jv_get_kind(input) != JV_KIND_ARRAY)
return type_error(input, "cannot be csv-formatted, only array");
jv line = jv_string("");
jv_array_foreach(input, i, x) {
if (i) line = jv_string_append_str(line, ",");
switch (jv_get_kind(x)) {
case JV_KIND_NULL:
/* null rendered as empty string */
jv_free(x);
break;
case JV_KIND_TRUE:
case JV_KIND_FALSE:
line = jv_string_concat(line, jv_dump_string(x, 0));
break;
case JV_KIND_NUMBER:
if (jv_number_value(x) != jv_number_value(x)) {
/* NaN, render as empty string */
jv_free(x);
} else {
line = jv_string_concat(line, jv_dump_string(x, 0));
}
break;
case JV_KIND_STRING: {
line = jv_string_append_str(line, "\"");
line = jv_string_concat(line, escape_string(x, "\"\"\"\0"));
line = jv_string_append_str(line, "\"");
break;
}
default:
jv_free(input);
jv_free(line);
return type_error(x, "is not valid in a csv row");
}
}
jv_free(input);
return line;
} else if (!strcmp(fmt_s, "html")) {
jv_free(fmt);
return escape_string(f_tostring(input), "&&\0<<\0>>\0''\0\""\0");
} else if (!strcmp(fmt_s, "uri")) {
jv_free(fmt);
input = f_tostring(input);
int unreserved[128] = {0};
const char* p = CHARS_ALPHANUM "-_.!~*'()";
while (*p) unreserved[(int)*p++] = 1;
jv line = jv_string("");
const char* s = jv_string_value(input);
for (int i=0; i<jv_string_length_bytes(jv_copy(input)); i++) {
unsigned ch = (unsigned)(unsigned char)*s;
if (ch < 128 && unreserved[ch]) {
line = jv_string_append_buf(line, s, 1);
} else {
line = jv_string_concat(line, jv_string_fmt("%%%02x", ch));
}
s++;
}
jv_free(input);
return line;
} else if (!strcmp(fmt_s, "sh")) {
jv_free(fmt);
if (jv_get_kind(input) != JV_KIND_ARRAY)
input = jv_array_set(jv_array(), 0, input);
jv line = jv_string("");
jv_array_foreach(input, i, x) {
if (i) line = jv_string_append_str(line, " ");
switch (jv_get_kind(x)) {
case JV_KIND_NULL:
case JV_KIND_TRUE:
case JV_KIND_FALSE:
case JV_KIND_NUMBER:
line = jv_string_concat(line, jv_dump_string(x, 0));
break;
case JV_KIND_STRING: {
line = jv_string_append_str(line, "'");
line = jv_string_concat(line, escape_string(x, "''\\''\0"));
line = jv_string_append_str(line, "'");
break;
}
default:
jv_free(input);
jv_free(line);
return type_error(x, "can not be escaped for shell");
}
}
jv_free(input);
return line;
} else if (!strcmp(fmt_s, "base64")) {
jv_free(fmt);
input = f_tostring(input);
jv line = jv_string("");
const char b64[64 + 1] = CHARS_ALPHANUM "+/";
const char* data = jv_string_value(input);
int len = jv_string_length_bytes(jv_copy(input));
for (int i=0; i<len; i+=3) {
uint32_t code = 0;
int n = len - i >= 3 ? 3 : len-i;
for (int j=0; j<3; j++) {
code <<= 8;
code |= j < n ? (unsigned)data[i+j] : 0;
}
char buf[4];
for (int j=0; j<4; j++) {
buf[j] = b64[(code >> (18 - j*6)) & 0x3f];
}
if (n < 3) buf[3] = '=';
if (n < 2) buf[2] = '=';
line = jv_string_append_buf(line, buf, sizeof(buf));
}
jv_free(input);
return line;
} else {
jv_free(input);
return jv_invalid_with_msg(jv_string_concat(fmt, jv_string(" is not a valid format")));
}
}
static jv f_keys(jv input) {
if (jv_get_kind(input) == JV_KIND_OBJECT || jv_get_kind(input) == JV_KIND_ARRAY) {
return jv_keys(input);
} else {
return type_error(input, "has no keys");
}
}
static jv f_sort(jv input){
if (jv_get_kind(input) == JV_KIND_ARRAY) {
return jv_sort(input, jv_copy(input));
} else {
return type_error(input, "cannot be sorted, as it is not an array");
}
}
static jv f_sort_by_impl(jv input, jv keys) {
if (jv_get_kind(input) == JV_KIND_ARRAY &&
jv_get_kind(keys) == JV_KIND_ARRAY &&
jv_array_length(jv_copy(input)) == jv_array_length(jv_copy(keys))) {
return jv_sort(input, keys);
} else {
return type_error2(input, keys, "cannot be sorted, as they are not both arrays");
}
}
static jv f_group_by_impl(jv input, jv keys) {
if (jv_get_kind(input) == JV_KIND_ARRAY &&
jv_get_kind(keys) == JV_KIND_ARRAY &&
jv_array_length(jv_copy(input)) == jv_array_length(jv_copy(keys))) {
return jv_group(input, keys);
} else {
return type_error2(input, keys, "cannot be sorted, as they are not both arrays");
}
}
static jv minmax_by(jv values, jv keys, int is_min) {
if (jv_get_kind(values) != JV_KIND_ARRAY)
return type_error2(values, keys, "cannot be iterated over");
if (jv_get_kind(keys) != JV_KIND_ARRAY)
return type_error2(values, keys, "cannot be iterated over");
if (jv_array_length(jv_copy(values)) != jv_array_length(jv_copy(keys)))
return type_error2(values, keys, "have wrong length");
if (jv_array_length(jv_copy(values)) == 0) {
jv_free(values);
jv_free(keys);
return jv_null();
}
jv ret = jv_array_get(jv_copy(values), 0);
jv retkey = jv_array_get(jv_copy(keys), 0);
for (int i=1; i<jv_array_length(jv_copy(values)); i++) {
jv item = jv_array_get(jv_copy(keys), i);
int cmp = jv_cmp(jv_copy(item), jv_copy(retkey));
if ((cmp < 0) == (is_min == 1)) {
jv_free(retkey);
retkey = item;
jv_free(ret);
ret = jv_array_get(jv_copy(values), i);
} else {
jv_free(item);
}
}
jv_free(values);
jv_free(keys);
jv_free(retkey);
return ret;
}
static jv f_min(jv x) {
return minmax_by(x, jv_copy(x), 1);
}
static jv f_max(jv x) {
return minmax_by(x, jv_copy(x), 0);
}
static jv f_min_by_impl(jv x, jv y) {
return minmax_by(x, y, 1);
}
static jv f_max_by_impl(jv x, jv y) {
return minmax_by(x, y, 0);
}
static jv f_type(jv input) {
jv out = jv_string(jv_kind_name(jv_get_kind(input)));
jv_free(input);
return out;
}
static jv f_error(jv input, jv msg) {
jv_free(input);
msg = f_tostring(msg);
return jv_invalid_with_msg(msg);
}
#define LIBM_DD(name) \
{(cfunction_ptr)f_ ## name, "_" #name, 1},
static const struct cfunction function_list[] = {
#include "libm.h"
{(cfunction_ptr)f_plus, "_plus", 3},
{(cfunction_ptr)f_negate, "_negate", 1},
{(cfunction_ptr)f_minus, "_minus", 3},
{(cfunction_ptr)f_multiply, "_multiply", 3},
{(cfunction_ptr)f_divide, "_divide", 3},
{(cfunction_ptr)f_mod, "_mod", 3},
{(cfunction_ptr)f_dump, "tojson", 1},
{(cfunction_ptr)f_json_parse, "fromjson", 1},
{(cfunction_ptr)f_tonumber, "tonumber", 1},
{(cfunction_ptr)f_tostring, "tostring", 1},
{(cfunction_ptr)f_keys, "keys", 1},
{(cfunction_ptr)f_startswith, "startswith", 2},
{(cfunction_ptr)f_endswith, "endswith", 2},
{(cfunction_ptr)f_ltrimstr, "ltrimstr", 2},
{(cfunction_ptr)f_rtrimstr, "rtrimstr", 2},
{(cfunction_ptr)jv_string_split, "split", 2},
{(cfunction_ptr)jv_string_parse, "parse", 1},
{(cfunction_ptr)jv_string_explode, "explode", 1},
{(cfunction_ptr)jv_string_implode, "implode", 1},
{(cfunction_ptr)jv_setpath, "setpath", 3}, // FIXME typechecking
{(cfunction_ptr)jv_getpath, "getpath", 2},
{(cfunction_ptr)jv_delpaths, "delpaths", 2},
{(cfunction_ptr)jv_has, "has", 2},
{(cfunction_ptr)f_equal, "_equal", 3},
{(cfunction_ptr)f_notequal, "_notequal", 3},
{(cfunction_ptr)f_less, "_less", 3},
{(cfunction_ptr)f_greater, "_greater", 3},
{(cfunction_ptr)f_lesseq, "_lesseq", 3},
{(cfunction_ptr)f_greatereq, "_greatereq", 3},
{(cfunction_ptr)f_contains, "contains", 2},
{(cfunction_ptr)f_length, "length", 1},
{(cfunction_ptr)f_type, "type", 1},
{(cfunction_ptr)f_sort, "sort", 1},
{(cfunction_ptr)f_sort_by_impl, "_sort_by_impl", 2},
{(cfunction_ptr)f_group_by_impl, "_group_by_impl", 2},
{(cfunction_ptr)f_min, "min", 1},
{(cfunction_ptr)f_max, "max", 1},
{(cfunction_ptr)f_min_by_impl, "_min_by_impl", 2},
{(cfunction_ptr)f_max_by_impl, "_max_by_impl", 2},
{(cfunction_ptr)f_error, "error", 2},
{(cfunction_ptr)f_format, "format", 2},
};
#undef LIBM_DD
struct bytecoded_builtin { const char* name; block code; };
static block bind_bytecoded_builtins(block b) {
block builtins = gen_noop();
{
struct bytecoded_builtin builtin_defs[] = {
{"empty", gen_op_simple(BACKTRACK)},
{"false", gen_const(jv_false())},
{"true", gen_const(jv_true())},
{"null", gen_const(jv_null())},
{"not", gen_condbranch(gen_const(jv_false()),
gen_const(jv_true()))}
};
for (unsigned i=0; i<sizeof(builtin_defs)/sizeof(builtin_defs[0]); i++) {
builtins = BLOCK(builtins, gen_function(builtin_defs[i].name, gen_noop(),
builtin_defs[i].code));
}
}
{
struct bytecoded_builtin builtin_def_1arg[] = {
{"path", BLOCK(gen_op_simple(PATH_BEGIN),
gen_call("arg", gen_noop()),
gen_op_simple(PATH_END))},
};
for (unsigned i=0; i<sizeof(builtin_def_1arg)/sizeof(builtin_def_1arg[0]); i++) {
builtins = BLOCK(builtins, gen_function(builtin_def_1arg[i].name,
gen_param("arg"),
builtin_def_1arg[i].code));
}
}
{
block rangevar = gen_op_var_fresh(STOREV, "rangevar");
block init = BLOCK(gen_op_simple(DUP), gen_call("start", gen_noop()), rangevar);
block range = BLOCK(init,
gen_call("end", gen_noop()),
gen_op_bound(RANGE, rangevar));
builtins = BLOCK(builtins, gen_function("range",
BLOCK(gen_param("start"), gen_param("end")),
range));
}
return block_bind_referenced(builtins, b, OP_IS_CALL_PSEUDO);
}
#define LIBM_DD(name) "def " #name ": _" #name ";",
static const char* const jq_builtins[] = {
"def map(f): [.[] | f];",
"def select(f): if f then . else empty end;",
"def sort_by(f): _sort_by_impl(map([f]));",
"def group_by(f): _group_by_impl(map([f]));",
"def unique: group_by(.) | map(.[0]);",
"def unique_by(f): group_by(f) | map(.[0]);",
"def max_by(f): _max_by_impl(map([f]));",
"def min_by(f): _min_by_impl(map([f]));",
#include "libm.h"
"def add: reduce .[] as $x (null; . + $x);",
"def del(f): delpaths([path(f)]);",
"def _assign(paths; value): value as $v | reduce path(paths) as $p (.; setpath($p; $v));",
"def _modify(paths; update): reduce path(paths) as $p (.; setpath($p; getpath($p) | update));",
"def recurse(f): ., (f | select(. != null) | recurse(f));",
"def recurse_down: recurse(.[]?);",
"def to_entries: [keys[] as $k | {key: $k, value: .[$k]}];",
"def from_entries: map({(.key): .value}) | add;",
"def with_entries(f): to_entries | map(f) | from_entries;",
"def reverse: [.[length - 1 - range(0;length)]];",
"def index(i): .[i][0];",
"def rindex(i): .[i][-1:][0];",
"def paths: path(recurse(if (type|. == \"array\" or . == \"object\") then .[] else empty end))|select(length > 0);",
"def leaf_paths: . as $dot|paths|select(. as $p|$dot|getpath($p)|type|. != \"array\" and . != \"object\");",
"def any: reduce .[] as $i (false; . or $i);",
"def all: reduce .[] as $i (true; . and $i);",
"def arrays: select(type == \"array\");",
"def objects: select(type == \"object\");",
"def iterables: arrays, objects;",
"def booleans: select(type == \"boolean\");",
"def numbers: select(type == \"number\");",
"def strings: select(type == \"string\");",
"def nulls: select(type == \"null\");",
"def values: arrays, objects, booleans, numbers, strings;",
"def scalars: select(. == null or . == true or . == false or type == \"number\" or type == \"string\");",
};
#undef LIBM_DD
static int builtins_bind_one(jq_state *jq, block* bb, const char* code) {
struct locfile src;
locfile_init(&src, jq, code, strlen(code));
block funcs;
int nerrors = jq_parse_library(&src, &funcs);
if (nerrors == 0) {
*bb = block_bind_referenced(funcs, *bb, OP_IS_CALL_PSEUDO);
}
locfile_free(&src);
return nerrors;
}
static int slurp_lib(jq_state *jq, block* bb) {
int nerrors = 0;
char* home = getenv("HOME");
if (home) { // silently ignore no $HOME
jv filename = jv_string_append_str(jv_string(home), "/.jq");
jv data = jv_load_file(jv_string_value(filename), 1);
if (jv_is_valid(data)) {
nerrors = builtins_bind_one(jq, bb, jv_string_value(data) );
}
jv_free(filename);
jv_free(data);
}
return nerrors;
}
int builtins_bind(jq_state *jq, block* bb) {
int nerrors = slurp_lib(jq, bb);
if (nerrors) {
block_free(*bb);
return nerrors;
}
for (int i=(int)(sizeof(jq_builtins)/sizeof(jq_builtins[0]))-1; i>=0; i--) {
nerrors = builtins_bind_one(jq, bb, jq_builtins[i]);
assert(!nerrors);
}
*bb = bind_bytecoded_builtins(*bb);
*bb = gen_cbinding(function_list, sizeof(function_list)/sizeof(function_list[0]), *bb);
return nerrors;
}