]>
Commit | Line | Data |
---|---|---|
7c673cae FG |
1 | /*- |
2 | * BSD LICENSE | |
3 | * | |
4 | * Copyright (c) Intel Corporation. | |
5 | * All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * | |
11 | * * Redistributions of source code must retain the above copyright | |
12 | * notice, this list of conditions and the following disclaimer. | |
13 | * * Redistributions in binary form must reproduce the above copyright | |
14 | * notice, this list of conditions and the following disclaimer in | |
15 | * the documentation and/or other materials provided with the | |
16 | * distribution. | |
17 | * * Neither the name of Intel Corporation nor the names of its | |
18 | * contributors may be used to endorse or promote products derived | |
19 | * from this software without specific prior written permission. | |
20 | * | |
21 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
22 | * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
23 | * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
24 | * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
25 | * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
26 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
27 | * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
28 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
29 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
30 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
31 | * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
32 | */ | |
33 | ||
11fdf7f2 TL |
34 | #include "spdk/json.h" |
35 | ||
36 | #include "spdk_internal/utf.h" | |
37 | #include "spdk_internal/log.h" | |
38 | ||
39 | #define SPDK_JSON_DEBUG(...) SPDK_DEBUGLOG(SPDK_LOG_JSON_UTIL, __VA_ARGS__) | |
7c673cae FG |
40 | |
41 | size_t | |
42 | spdk_json_val_len(const struct spdk_json_val *val) | |
43 | { | |
44 | if (val == NULL) { | |
45 | return 0; | |
46 | } | |
47 | ||
48 | if (val->type == SPDK_JSON_VAL_ARRAY_BEGIN || val->type == SPDK_JSON_VAL_OBJECT_BEGIN) { | |
49 | return val->len + 2; | |
50 | } | |
51 | ||
52 | return 1; | |
53 | } | |
54 | ||
55 | bool | |
56 | spdk_json_strequal(const struct spdk_json_val *val, const char *str) | |
57 | { | |
58 | size_t len; | |
59 | ||
60 | if (val->type != SPDK_JSON_VAL_STRING && val->type != SPDK_JSON_VAL_NAME) { | |
61 | return false; | |
62 | } | |
63 | ||
64 | len = strlen(str); | |
65 | if (val->len != len) { | |
66 | return false; | |
67 | } | |
68 | ||
69 | return memcmp(val->start, str, len) == 0; | |
70 | } | |
71 | ||
72 | char * | |
73 | spdk_json_strdup(const struct spdk_json_val *val) | |
74 | { | |
75 | size_t len; | |
76 | char *s; | |
77 | ||
78 | if (val->type != SPDK_JSON_VAL_STRING && val->type != SPDK_JSON_VAL_NAME) { | |
79 | return NULL; | |
80 | } | |
81 | ||
82 | len = val->len; | |
83 | ||
84 | if (memchr(val->start, '\0', len)) { | |
85 | /* String contains embedded NUL, so it is not a valid C string. */ | |
86 | return NULL; | |
87 | } | |
88 | ||
89 | s = malloc(len + 1); | |
90 | if (s == NULL) { | |
91 | return s; | |
92 | } | |
93 | ||
94 | memcpy(s, val->start, len); | |
95 | s[len] = '\0'; | |
96 | ||
97 | return s; | |
98 | } | |
99 | ||
11fdf7f2 TL |
100 | struct spdk_json_num { |
101 | bool negative; | |
102 | uint64_t significand; | |
103 | int64_t exponent; | |
104 | }; | |
105 | ||
106 | static int | |
107 | spdk_json_number_split(const struct spdk_json_val *val, struct spdk_json_num *num) | |
7c673cae | 108 | { |
11fdf7f2 TL |
109 | const char *iter; |
110 | size_t remaining; | |
111 | uint64_t *pval; | |
112 | uint64_t frac_digits = 0; | |
113 | uint64_t exponent_u64 = 0; | |
114 | bool exponent_negative = false; | |
115 | enum { | |
116 | NUM_STATE_INT, | |
117 | NUM_STATE_FRAC, | |
118 | NUM_STATE_EXP, | |
119 | } state; | |
120 | ||
121 | memset(num, 0, sizeof(*num)); | |
122 | ||
123 | if (val->type != SPDK_JSON_VAL_NUMBER) { | |
124 | return -EINVAL; | |
125 | } | |
7c673cae | 126 | |
11fdf7f2 TL |
127 | remaining = val->len; |
128 | if (remaining == 0) { | |
129 | return -EINVAL; | |
7c673cae FG |
130 | } |
131 | ||
11fdf7f2 TL |
132 | iter = val->start; |
133 | if (*iter == '-') { | |
134 | num->negative = true; | |
135 | iter++; | |
136 | remaining--; | |
137 | } | |
7c673cae | 138 | |
11fdf7f2 TL |
139 | state = NUM_STATE_INT; |
140 | pval = &num->significand; | |
141 | while (remaining--) { | |
142 | char c = *iter++; | |
143 | ||
144 | if (c == '.') { | |
145 | state = NUM_STATE_FRAC; | |
146 | } else if (c == 'e' || c == 'E') { | |
147 | state = NUM_STATE_EXP; | |
148 | pval = &exponent_u64; | |
149 | } else if (c == '-') { | |
150 | assert(state == NUM_STATE_EXP); | |
151 | exponent_negative = true; | |
152 | } else if (c == '+') { | |
153 | assert(state == NUM_STATE_EXP); | |
154 | /* exp_negative = false; */ /* already false by default */ | |
155 | } else { | |
156 | uint64_t new_val; | |
157 | ||
158 | assert(c >= '0' && c <= '9'); | |
159 | new_val = *pval * 10 + c - '0'; | |
160 | if (new_val < *pval) { | |
161 | return -ERANGE; | |
162 | } | |
163 | ||
164 | if (state == NUM_STATE_FRAC) { | |
165 | frac_digits++; | |
166 | } | |
167 | ||
168 | *pval = new_val; | |
169 | } | |
170 | } | |
171 | ||
172 | if (exponent_negative) { | |
173 | if (exponent_u64 > 9223372036854775808ULL) { /* abs(INT64_MIN) */ | |
174 | return -ERANGE; | |
175 | } | |
176 | num->exponent = (int64_t) - exponent_u64; | |
177 | } else { | |
178 | if (exponent_u64 > INT64_MAX) { | |
179 | return -ERANGE; | |
180 | } | |
181 | num->exponent = exponent_u64; | |
182 | } | |
183 | num->exponent -= frac_digits; | |
184 | ||
185 | /* Apply as much of the exponent as possible without overflow or truncation */ | |
186 | if (num->exponent < 0) { | |
187 | while (num->exponent && num->significand >= 10 && num->significand % 10 == 0) { | |
188 | num->significand /= 10; | |
189 | num->exponent++; | |
190 | } | |
191 | } else { /* positive exponent */ | |
192 | while (num->exponent) { | |
193 | uint64_t new_val = num->significand * 10; | |
194 | ||
195 | if (new_val < num->significand) { | |
196 | break; | |
197 | } | |
198 | ||
199 | num->significand = new_val; | |
200 | num->exponent--; | |
201 | } | |
202 | } | |
203 | ||
204 | return 0; | |
205 | } | |
206 | ||
207 | int | |
208 | spdk_json_number_to_uint16(const struct spdk_json_val *val, uint16_t *num) | |
209 | { | |
210 | struct spdk_json_num split_num; | |
211 | int rc; | |
212 | ||
213 | rc = spdk_json_number_split(val, &split_num); | |
214 | if (rc) { | |
215 | return rc; | |
216 | } | |
217 | ||
218 | if (split_num.exponent || split_num.negative) { | |
219 | return -ERANGE; | |
7c673cae FG |
220 | } |
221 | ||
11fdf7f2 TL |
222 | if (split_num.significand > UINT16_MAX) { |
223 | return -ERANGE; | |
224 | } | |
225 | *num = (uint16_t)split_num.significand; | |
7c673cae FG |
226 | return 0; |
227 | } | |
228 | ||
229 | int | |
230 | spdk_json_number_to_int32(const struct spdk_json_val *val, int32_t *num) | |
231 | { | |
11fdf7f2 TL |
232 | struct spdk_json_num split_num; |
233 | int rc; | |
7c673cae | 234 | |
11fdf7f2 TL |
235 | rc = spdk_json_number_split(val, &split_num); |
236 | if (rc) { | |
237 | return rc; | |
7c673cae FG |
238 | } |
239 | ||
11fdf7f2 TL |
240 | if (split_num.exponent) { |
241 | return -ERANGE; | |
242 | } | |
243 | ||
244 | if (split_num.negative) { | |
245 | if (split_num.significand > 2147483648) { /* abs(INT32_MIN) */ | |
246 | return -ERANGE; | |
247 | } | |
248 | *num = (int32_t) - (int64_t)split_num.significand; | |
249 | return 0; | |
7c673cae FG |
250 | } |
251 | ||
11fdf7f2 TL |
252 | /* positive */ |
253 | if (split_num.significand > INT32_MAX) { | |
254 | return -ERANGE; | |
255 | } | |
256 | *num = (int32_t)split_num.significand; | |
7c673cae FG |
257 | return 0; |
258 | } | |
259 | ||
260 | int | |
261 | spdk_json_number_to_uint32(const struct spdk_json_val *val, uint32_t *num) | |
262 | { | |
11fdf7f2 TL |
263 | struct spdk_json_num split_num; |
264 | int rc; | |
7c673cae | 265 | |
11fdf7f2 TL |
266 | rc = spdk_json_number_split(val, &split_num); |
267 | if (rc) { | |
268 | return rc; | |
7c673cae FG |
269 | } |
270 | ||
11fdf7f2 TL |
271 | if (split_num.exponent || split_num.negative) { |
272 | return -ERANGE; | |
7c673cae FG |
273 | } |
274 | ||
11fdf7f2 TL |
275 | if (split_num.significand > UINT32_MAX) { |
276 | return -ERANGE; | |
277 | } | |
278 | *num = (uint32_t)split_num.significand; | |
279 | return 0; | |
280 | } | |
281 | ||
282 | int | |
283 | spdk_json_number_to_uint64(const struct spdk_json_val *val, uint64_t *num) | |
284 | { | |
285 | struct spdk_json_num split_num; | |
286 | int rc; | |
287 | ||
288 | rc = spdk_json_number_split(val, &split_num); | |
289 | if (rc) { | |
290 | return rc; | |
291 | } | |
292 | ||
293 | if (split_num.exponent || split_num.negative) { | |
294 | return -ERANGE; | |
7c673cae FG |
295 | } |
296 | ||
11fdf7f2 | 297 | *num = split_num.significand; |
7c673cae FG |
298 | return 0; |
299 | } | |
300 | ||
301 | int | |
302 | spdk_json_decode_object(const struct spdk_json_val *values, | |
303 | const struct spdk_json_object_decoder *decoders, size_t num_decoders, void *out) | |
304 | { | |
305 | uint32_t i; | |
306 | bool invalid = false; | |
307 | size_t decidx; | |
308 | bool *seen; | |
309 | ||
310 | if (values == NULL || values->type != SPDK_JSON_VAL_OBJECT_BEGIN) { | |
311 | return -1; | |
312 | } | |
313 | ||
314 | seen = calloc(sizeof(bool), num_decoders); | |
315 | if (seen == NULL) { | |
316 | return -1; | |
317 | } | |
318 | ||
319 | for (i = 0; i < values->len;) { | |
320 | const struct spdk_json_val *name = &values[i + 1]; | |
321 | const struct spdk_json_val *v = &values[i + 2]; | |
322 | bool found = false; | |
323 | ||
324 | for (decidx = 0; decidx < num_decoders; decidx++) { | |
325 | const struct spdk_json_object_decoder *dec = &decoders[decidx]; | |
326 | if (spdk_json_strequal(name, dec->name)) { | |
327 | void *field = (void *)((uintptr_t)out + dec->offset); | |
328 | ||
329 | found = true; | |
330 | ||
331 | if (seen[decidx]) { | |
332 | /* duplicate field name */ | |
333 | invalid = true; | |
9f95a23c | 334 | SPDK_JSON_DEBUG("Duplicate key '%s'\n", dec->name); |
7c673cae FG |
335 | } else { |
336 | seen[decidx] = true; | |
337 | if (dec->decode_func(v, field)) { | |
338 | invalid = true; | |
9f95a23c | 339 | SPDK_JSON_DEBUG("Decoder failed to decode key '%s'\n", dec->name); |
7c673cae FG |
340 | /* keep going to fill out any other valid keys */ |
341 | } | |
342 | } | |
343 | break; | |
344 | } | |
345 | } | |
346 | ||
347 | if (!found) { | |
348 | invalid = true; | |
9f95a23c | 349 | SPDK_JSON_DEBUG("Decoder not found for key '%.*s'\n", name->len, (char *)name->start); |
7c673cae FG |
350 | } |
351 | ||
352 | i += 1 + spdk_json_val_len(v); | |
353 | } | |
354 | ||
355 | for (decidx = 0; decidx < num_decoders; decidx++) { | |
356 | if (!decoders[decidx].optional && !seen[decidx]) { | |
357 | /* required field is missing */ | |
358 | invalid = true; | |
359 | break; | |
360 | } | |
361 | } | |
362 | ||
363 | free(seen); | |
364 | return invalid ? -1 : 0; | |
365 | } | |
366 | ||
367 | int | |
368 | spdk_json_decode_array(const struct spdk_json_val *values, spdk_json_decode_fn decode_func, | |
369 | void *out, size_t max_size, size_t *out_size, size_t stride) | |
370 | { | |
371 | uint32_t i; | |
372 | char *field; | |
11fdf7f2 | 373 | char *out_end; |
7c673cae FG |
374 | |
375 | if (values == NULL || values->type != SPDK_JSON_VAL_ARRAY_BEGIN) { | |
376 | return -1; | |
377 | } | |
378 | ||
7c673cae FG |
379 | *out_size = 0; |
380 | field = out; | |
11fdf7f2 | 381 | out_end = field + max_size * stride; |
7c673cae FG |
382 | for (i = 0; i < values->len;) { |
383 | const struct spdk_json_val *v = &values[i + 1]; | |
384 | ||
11fdf7f2 TL |
385 | if (field == out_end) { |
386 | return -1; | |
387 | } | |
388 | ||
7c673cae FG |
389 | if (decode_func(v, field)) { |
390 | return -1; | |
391 | } | |
392 | ||
393 | i += spdk_json_val_len(v); | |
394 | field += stride; | |
395 | (*out_size)++; | |
396 | } | |
397 | ||
398 | return 0; | |
399 | } | |
400 | ||
11fdf7f2 TL |
401 | int |
402 | spdk_json_decode_bool(const struct spdk_json_val *val, void *out) | |
403 | { | |
404 | bool *f = out; | |
405 | ||
406 | if (val->type != SPDK_JSON_VAL_TRUE && val->type != SPDK_JSON_VAL_FALSE) { | |
407 | return -1; | |
408 | } | |
409 | ||
410 | *f = val->type == SPDK_JSON_VAL_TRUE; | |
411 | return 0; | |
412 | } | |
413 | ||
414 | int | |
415 | spdk_json_decode_uint16(const struct spdk_json_val *val, void *out) | |
416 | { | |
417 | uint16_t *i = out; | |
418 | ||
419 | return spdk_json_number_to_uint16(val, i); | |
420 | } | |
421 | ||
7c673cae FG |
422 | int |
423 | spdk_json_decode_int32(const struct spdk_json_val *val, void *out) | |
424 | { | |
425 | int32_t *i = out; | |
426 | ||
427 | return spdk_json_number_to_int32(val, i); | |
428 | } | |
429 | ||
430 | int | |
431 | spdk_json_decode_uint32(const struct spdk_json_val *val, void *out) | |
432 | { | |
433 | uint32_t *i = out; | |
434 | ||
435 | return spdk_json_number_to_uint32(val, i); | |
436 | } | |
437 | ||
11fdf7f2 TL |
438 | int |
439 | spdk_json_decode_uint64(const struct spdk_json_val *val, void *out) | |
440 | { | |
441 | uint64_t *i = out; | |
442 | ||
443 | return spdk_json_number_to_uint64(val, i); | |
444 | } | |
445 | ||
7c673cae FG |
446 | int |
447 | spdk_json_decode_string(const struct spdk_json_val *val, void *out) | |
448 | { | |
449 | char **s = out; | |
450 | ||
11fdf7f2 | 451 | free(*s); |
7c673cae FG |
452 | |
453 | *s = spdk_json_strdup(val); | |
454 | ||
455 | if (*s) { | |
456 | return 0; | |
457 | } else { | |
458 | return -1; | |
459 | } | |
460 | } | |
11fdf7f2 TL |
461 | |
462 | static struct spdk_json_val * | |
463 | spdk_json_first(struct spdk_json_val *object, enum spdk_json_val_type type) | |
464 | { | |
465 | /* 'object' must be JSON object or array. 'type' might be combination of these two. */ | |
466 | assert((type & (SPDK_JSON_VAL_ARRAY_BEGIN | SPDK_JSON_VAL_OBJECT_BEGIN)) != 0); | |
467 | ||
468 | assert(object != NULL); | |
469 | ||
470 | if ((object->type & type) == 0) { | |
471 | return NULL; | |
472 | } | |
473 | ||
474 | object++; | |
475 | if (object->len == 0) { | |
476 | return NULL; | |
477 | } | |
478 | ||
479 | return object; | |
480 | } | |
481 | ||
482 | static struct spdk_json_val * | |
483 | spdk_json_value(struct spdk_json_val *key) | |
484 | { | |
485 | return key->type == SPDK_JSON_VAL_NAME ? key + 1 : NULL; | |
486 | } | |
487 | ||
488 | int | |
489 | spdk_json_find(struct spdk_json_val *object, const char *key_name, struct spdk_json_val **key, | |
490 | struct spdk_json_val **val, enum spdk_json_val_type type) | |
491 | { | |
492 | struct spdk_json_val *_key = NULL; | |
493 | struct spdk_json_val *_val = NULL; | |
494 | struct spdk_json_val *it; | |
495 | ||
496 | assert(object != NULL); | |
497 | ||
498 | for (it = spdk_json_first(object, SPDK_JSON_VAL_ARRAY_BEGIN | SPDK_JSON_VAL_OBJECT_BEGIN); | |
499 | it != NULL; | |
500 | it = spdk_json_next(it)) { | |
501 | if (it->type != SPDK_JSON_VAL_NAME) { | |
502 | continue; | |
503 | } | |
504 | ||
505 | if (spdk_json_strequal(it, key_name) != true) { | |
506 | continue; | |
507 | } | |
508 | ||
509 | if (_key) { | |
510 | SPDK_JSON_DEBUG("Duplicate key '%s'", key_name); | |
511 | return -EINVAL; | |
512 | } | |
513 | ||
514 | _key = it; | |
515 | _val = spdk_json_value(_key); | |
516 | ||
517 | if (type != SPDK_JSON_VAL_INVALID && (_val->type & type) == 0) { | |
518 | SPDK_JSON_DEBUG("key '%s' type is %#x but expected one of %#x\n", key_name, _val->type, type); | |
519 | return -EDOM; | |
520 | } | |
521 | } | |
522 | ||
523 | if (key) { | |
524 | *key = _key; | |
525 | } | |
526 | ||
527 | if (val) { | |
528 | *val = _val; | |
529 | } | |
530 | ||
531 | return _val ? 0 : -ENOENT; | |
532 | } | |
533 | ||
534 | int | |
535 | spdk_json_find_string(struct spdk_json_val *object, const char *key_name, | |
536 | struct spdk_json_val **key, struct spdk_json_val **val) | |
537 | { | |
538 | return spdk_json_find(object, key_name, key, val, SPDK_JSON_VAL_STRING); | |
539 | } | |
540 | ||
541 | int | |
542 | spdk_json_find_array(struct spdk_json_val *object, const char *key_name, | |
543 | struct spdk_json_val **key, struct spdk_json_val **val) | |
544 | { | |
545 | return spdk_json_find(object, key_name, key, val, SPDK_JSON_VAL_ARRAY_BEGIN); | |
546 | } | |
547 | ||
548 | struct spdk_json_val * | |
549 | spdk_json_object_first(struct spdk_json_val *object) | |
550 | { | |
551 | struct spdk_json_val *first = spdk_json_first(object, SPDK_JSON_VAL_OBJECT_BEGIN); | |
552 | ||
553 | /* Empty object? */ | |
554 | return first && first->type != SPDK_JSON_VAL_OBJECT_END ? first : NULL; | |
555 | } | |
556 | ||
557 | struct spdk_json_val * | |
558 | spdk_json_array_first(struct spdk_json_val *array_begin) | |
559 | { | |
560 | struct spdk_json_val *first = spdk_json_first(array_begin, SPDK_JSON_VAL_ARRAY_BEGIN); | |
561 | ||
562 | /* Empty array? */ | |
563 | return first && first->type != SPDK_JSON_VAL_ARRAY_END ? first : NULL; | |
564 | } | |
565 | ||
566 | static struct spdk_json_val * | |
567 | spdk_json_skip_object_or_array(struct spdk_json_val *val) | |
568 | { | |
569 | unsigned lvl; | |
570 | enum spdk_json_val_type end_type; | |
571 | struct spdk_json_val *it; | |
572 | ||
573 | if (val->type == SPDK_JSON_VAL_OBJECT_BEGIN) { | |
574 | end_type = SPDK_JSON_VAL_OBJECT_END; | |
575 | } else if (val->type == SPDK_JSON_VAL_ARRAY_BEGIN) { | |
576 | end_type = SPDK_JSON_VAL_ARRAY_END; | |
577 | } else { | |
578 | SPDK_JSON_DEBUG("Expected JSON object (%#x) or array (%#x) but got %#x\n", | |
9f95a23c | 579 | SPDK_JSON_VAL_OBJECT_BEGIN, SPDK_JSON_VAL_ARRAY_BEGIN, val->type); |
11fdf7f2 TL |
580 | return NULL; |
581 | } | |
582 | ||
583 | lvl = 1; | |
584 | for (it = val + 1; it->type != SPDK_JSON_VAL_INVALID && lvl != 0; it++) { | |
585 | if (it->type == val->type) { | |
586 | lvl++; | |
587 | } else if (it->type == end_type) { | |
588 | lvl--; | |
589 | } | |
590 | } | |
591 | ||
592 | /* if lvl != 0 we have invalid JSON object */ | |
593 | if (lvl != 0) { | |
594 | SPDK_JSON_DEBUG("Can't find end of object (type: %#x): lvl (%u) != 0)\n", val->type, lvl); | |
595 | it = NULL; | |
596 | } | |
597 | ||
598 | return it; | |
599 | } | |
600 | ||
601 | struct spdk_json_val * | |
602 | spdk_json_next(struct spdk_json_val *it) | |
603 | { | |
604 | struct spdk_json_val *val, *next; | |
605 | ||
606 | switch (it->type) { | |
607 | case SPDK_JSON_VAL_NAME: | |
608 | val = spdk_json_value(it); | |
609 | next = spdk_json_next(val); | |
610 | break; | |
611 | ||
612 | /* We are in the middle of an array - get to next entry */ | |
613 | case SPDK_JSON_VAL_NULL: | |
614 | case SPDK_JSON_VAL_TRUE: | |
615 | case SPDK_JSON_VAL_FALSE: | |
616 | case SPDK_JSON_VAL_NUMBER: | |
617 | case SPDK_JSON_VAL_STRING: | |
618 | val = it + 1; | |
619 | return val; | |
620 | ||
621 | case SPDK_JSON_VAL_ARRAY_BEGIN: | |
622 | case SPDK_JSON_VAL_OBJECT_BEGIN: | |
623 | next = spdk_json_skip_object_or_array(it); | |
624 | break; | |
625 | ||
626 | /* Can't go to the next object if started from the end of array or object */ | |
627 | case SPDK_JSON_VAL_ARRAY_END: | |
628 | case SPDK_JSON_VAL_OBJECT_END: | |
629 | case SPDK_JSON_VAL_INVALID: | |
630 | return NULL; | |
631 | default: | |
632 | assert(false); | |
633 | return NULL; | |
634 | ||
635 | } | |
636 | ||
637 | /* EOF ? */ | |
638 | if (next == NULL) { | |
639 | return NULL; | |
640 | } | |
641 | ||
642 | switch (next->type) { | |
643 | case SPDK_JSON_VAL_ARRAY_END: | |
644 | case SPDK_JSON_VAL_OBJECT_END: | |
645 | case SPDK_JSON_VAL_INVALID: | |
646 | return NULL; | |
647 | default: | |
648 | /* Next value */ | |
649 | return next; | |
650 | } | |
651 | } | |
652 | ||
653 | SPDK_LOG_REGISTER_COMPONENT("json_util", SPDK_LOG_JSON_UTIL) |