]>
Commit | Line | Data |
---|---|---|
4a5fcab7 AL |
1 | /* |
2 | * JSON Parser | |
3 | * | |
4 | * Copyright IBM, Corp. 2009 | |
5 | * | |
6 | * Authors: | |
7 | * Anthony Liguori <aliguori@us.ibm.com> | |
8 | * | |
9 | * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. | |
10 | * See the COPYING.LIB file in the top-level directory. | |
11 | * | |
12 | */ | |
13 | ||
f2ad72b3 | 14 | #include "qemu/osdep.h" |
4a5fcab7 AL |
15 | |
16 | #include "qemu-common.h" | |
7b1b5d19 PB |
17 | #include "qapi/qmp/qstring.h" |
18 | #include "qapi/qmp/qint.h" | |
19 | #include "qapi/qmp/qdict.h" | |
20 | #include "qapi/qmp/qlist.h" | |
21 | #include "qapi/qmp/qfloat.h" | |
22 | #include "qapi/qmp/qbool.h" | |
23 | #include "qapi/qmp/json-parser.h" | |
24 | #include "qapi/qmp/json-lexer.h" | |
9bada897 | 25 | #include "qapi/qmp/json-streamer.h" |
4a5fcab7 AL |
26 | |
27 | typedef struct JSONParserContext | |
28 | { | |
ef749d07 | 29 | Error *err; |
9bada897 | 30 | JSONToken *current; |
95385fe9 | 31 | GQueue *buf; |
4a5fcab7 AL |
32 | } JSONParserContext; |
33 | ||
34 | #define BUG_ON(cond) assert(!(cond)) | |
35 | ||
36 | /** | |
37 | * TODO | |
38 | * | |
39 | * 0) make errors meaningful again | |
40 | * 1) add geometry information to tokens | |
41 | * 3) should we return a parsed size? | |
42 | * 4) deal with premature EOI | |
43 | */ | |
44 | ||
65c0f1e9 | 45 | static QObject *parse_value(JSONParserContext *ctxt, va_list *ap); |
4a5fcab7 | 46 | |
4a5fcab7 AL |
47 | /** |
48 | * Error handler | |
49 | */ | |
8b7968f7 | 50 | static void GCC_FMT_ATTR(3, 4) parse_error(JSONParserContext *ctxt, |
9bada897 | 51 | JSONToken *token, const char *msg, ...) |
4a5fcab7 | 52 | { |
c96c84a9 | 53 | va_list ap; |
ef749d07 | 54 | char message[1024]; |
c96c84a9 | 55 | va_start(ap, msg); |
ef749d07 | 56 | vsnprintf(message, sizeof(message), msg, ap); |
c96c84a9 | 57 | va_end(ap); |
ef749d07 AL |
58 | if (ctxt->err) { |
59 | error_free(ctxt->err); | |
60 | ctxt->err = NULL; | |
61 | } | |
f231b88d | 62 | error_setg(&ctxt->err, "JSON parse error, %s", message); |
4a5fcab7 AL |
63 | } |
64 | ||
65 | /** | |
66 | * String helpers | |
67 | * | |
68 | * These helpers are used to unescape strings. | |
69 | */ | |
70 | static void wchar_to_utf8(uint16_t wchar, char *buffer, size_t buffer_length) | |
71 | { | |
72 | if (wchar <= 0x007F) { | |
73 | BUG_ON(buffer_length < 2); | |
74 | ||
75 | buffer[0] = wchar & 0x7F; | |
76 | buffer[1] = 0; | |
77 | } else if (wchar <= 0x07FF) { | |
78 | BUG_ON(buffer_length < 3); | |
79 | ||
80 | buffer[0] = 0xC0 | ((wchar >> 6) & 0x1F); | |
81 | buffer[1] = 0x80 | (wchar & 0x3F); | |
82 | buffer[2] = 0; | |
83 | } else { | |
84 | BUG_ON(buffer_length < 4); | |
85 | ||
86 | buffer[0] = 0xE0 | ((wchar >> 12) & 0x0F); | |
87 | buffer[1] = 0x80 | ((wchar >> 6) & 0x3F); | |
88 | buffer[2] = 0x80 | (wchar & 0x3F); | |
89 | buffer[3] = 0; | |
90 | } | |
91 | } | |
92 | ||
93 | static int hex2decimal(char ch) | |
94 | { | |
95 | if (ch >= '0' && ch <= '9') { | |
96 | return (ch - '0'); | |
97 | } else if (ch >= 'a' && ch <= 'f') { | |
98 | return 10 + (ch - 'a'); | |
99 | } else if (ch >= 'A' && ch <= 'F') { | |
100 | return 10 + (ch - 'A'); | |
101 | } | |
102 | ||
103 | return -1; | |
104 | } | |
105 | ||
106 | /** | |
107 | * parse_string(): Parse a json string and return a QObject | |
108 | * | |
109 | * string | |
110 | * "" | |
111 | * " chars " | |
112 | * chars | |
113 | * char | |
114 | * char chars | |
115 | * char | |
116 | * any-Unicode-character- | |
117 | * except-"-or-\-or- | |
118 | * control-character | |
119 | * \" | |
120 | * \\ | |
121 | * \/ | |
122 | * \b | |
123 | * \f | |
124 | * \n | |
125 | * \r | |
126 | * \t | |
127 | * \u four-hex-digits | |
128 | */ | |
9bada897 PB |
129 | static QString *qstring_from_escaped_str(JSONParserContext *ctxt, |
130 | JSONToken *token) | |
4a5fcab7 | 131 | { |
9bada897 | 132 | const char *ptr = token->str; |
4a5fcab7 AL |
133 | QString *str; |
134 | int double_quote = 1; | |
135 | ||
136 | if (*ptr == '"') { | |
137 | double_quote = 1; | |
138 | } else { | |
139 | double_quote = 0; | |
140 | } | |
141 | ptr++; | |
142 | ||
143 | str = qstring_new(); | |
144 | while (*ptr && | |
145 | ((double_quote && *ptr != '"') || (!double_quote && *ptr != '\''))) { | |
146 | if (*ptr == '\\') { | |
147 | ptr++; | |
148 | ||
149 | switch (*ptr) { | |
150 | case '"': | |
151 | qstring_append(str, "\""); | |
152 | ptr++; | |
153 | break; | |
154 | case '\'': | |
155 | qstring_append(str, "'"); | |
156 | ptr++; | |
157 | break; | |
158 | case '\\': | |
159 | qstring_append(str, "\\"); | |
160 | ptr++; | |
161 | break; | |
162 | case '/': | |
163 | qstring_append(str, "/"); | |
164 | ptr++; | |
165 | break; | |
166 | case 'b': | |
167 | qstring_append(str, "\b"); | |
168 | ptr++; | |
169 | break; | |
bd032695 LC |
170 | case 'f': |
171 | qstring_append(str, "\f"); | |
172 | ptr++; | |
173 | break; | |
4a5fcab7 AL |
174 | case 'n': |
175 | qstring_append(str, "\n"); | |
176 | ptr++; | |
177 | break; | |
178 | case 'r': | |
179 | qstring_append(str, "\r"); | |
180 | ptr++; | |
181 | break; | |
182 | case 't': | |
183 | qstring_append(str, "\t"); | |
184 | ptr++; | |
185 | break; | |
186 | case 'u': { | |
187 | uint16_t unicode_char = 0; | |
188 | char utf8_char[4]; | |
189 | int i = 0; | |
190 | ||
191 | ptr++; | |
192 | ||
193 | for (i = 0; i < 4; i++) { | |
194 | if (qemu_isxdigit(*ptr)) { | |
195 | unicode_char |= hex2decimal(*ptr) << ((3 - i) * 4); | |
196 | } else { | |
197 | parse_error(ctxt, token, | |
198 | "invalid hex escape sequence in string"); | |
199 | goto out; | |
200 | } | |
201 | ptr++; | |
202 | } | |
203 | ||
204 | wchar_to_utf8(unicode_char, utf8_char, sizeof(utf8_char)); | |
205 | qstring_append(str, utf8_char); | |
206 | } break; | |
207 | default: | |
208 | parse_error(ctxt, token, "invalid escape sequence in string"); | |
209 | goto out; | |
210 | } | |
211 | } else { | |
212 | char dummy[2]; | |
213 | ||
214 | dummy[0] = *ptr++; | |
215 | dummy[1] = 0; | |
216 | ||
217 | qstring_append(str, dummy); | |
218 | } | |
219 | } | |
220 | ||
4a5fcab7 AL |
221 | return str; |
222 | ||
223 | out: | |
224 | QDECREF(str); | |
225 | return NULL; | |
226 | } | |
227 | ||
9bada897 PB |
228 | /* Note: the token object returned by parser_context_peek_token or |
229 | * parser_context_pop_token is deleted as soon as parser_context_pop_token | |
230 | * is called again. | |
95385fe9 | 231 | */ |
9bada897 | 232 | static JSONToken *parser_context_pop_token(JSONParserContext *ctxt) |
65c0f1e9 | 233 | { |
9bada897 | 234 | g_free(ctxt->current); |
95385fe9 PB |
235 | assert(!g_queue_is_empty(ctxt->buf)); |
236 | ctxt->current = g_queue_pop_head(ctxt->buf); | |
237 | return ctxt->current; | |
65c0f1e9 MR |
238 | } |
239 | ||
9bada897 | 240 | static JSONToken *parser_context_peek_token(JSONParserContext *ctxt) |
65c0f1e9 | 241 | { |
95385fe9 PB |
242 | assert(!g_queue_is_empty(ctxt->buf)); |
243 | return g_queue_peek_head(ctxt->buf); | |
65c0f1e9 MR |
244 | } |
245 | ||
95385fe9 | 246 | static JSONParserContext *parser_context_new(GQueue *tokens) |
65c0f1e9 MR |
247 | { |
248 | JSONParserContext *ctxt; | |
65c0f1e9 MR |
249 | |
250 | if (!tokens) { | |
251 | return NULL; | |
252 | } | |
253 | ||
65c0f1e9 | 254 | ctxt = g_malloc0(sizeof(JSONParserContext)); |
95385fe9 | 255 | ctxt->buf = tokens; |
65c0f1e9 MR |
256 | |
257 | return ctxt; | |
258 | } | |
259 | ||
260 | /* to support error propagation, ctxt->err must be freed separately */ | |
261 | static void parser_context_free(JSONParserContext *ctxt) | |
262 | { | |
65c0f1e9 | 263 | if (ctxt) { |
95385fe9 PB |
264 | while (!g_queue_is_empty(ctxt->buf)) { |
265 | parser_context_pop_token(ctxt); | |
65c0f1e9 | 266 | } |
9bada897 | 267 | g_free(ctxt->current); |
95385fe9 | 268 | g_queue_free(ctxt->buf); |
65c0f1e9 MR |
269 | g_free(ctxt); |
270 | } | |
271 | } | |
272 | ||
4a5fcab7 AL |
273 | /** |
274 | * Parsing rules | |
275 | */ | |
65c0f1e9 | 276 | static int parse_pair(JSONParserContext *ctxt, QDict *dict, va_list *ap) |
4a5fcab7 | 277 | { |
9bada897 PB |
278 | QObject *key = NULL, *value; |
279 | JSONToken *peek, *token; | |
4a5fcab7 | 280 | |
65c0f1e9 | 281 | peek = parser_context_peek_token(ctxt); |
11e8a46c AL |
282 | if (peek == NULL) { |
283 | parse_error(ctxt, NULL, "premature EOI"); | |
284 | goto out; | |
285 | } | |
286 | ||
65c0f1e9 | 287 | key = parse_value(ctxt, ap); |
d758d90f | 288 | if (!key || qobject_type(key) != QTYPE_QSTRING) { |
4a5fcab7 AL |
289 | parse_error(ctxt, peek, "key is not a string in object"); |
290 | goto out; | |
291 | } | |
292 | ||
65c0f1e9 | 293 | token = parser_context_pop_token(ctxt); |
11e8a46c AL |
294 | if (token == NULL) { |
295 | parse_error(ctxt, NULL, "premature EOI"); | |
296 | goto out; | |
297 | } | |
298 | ||
9bada897 | 299 | if (token->type != JSON_COLON) { |
4a5fcab7 AL |
300 | parse_error(ctxt, token, "missing : in object pair"); |
301 | goto out; | |
302 | } | |
303 | ||
65c0f1e9 | 304 | value = parse_value(ctxt, ap); |
4a5fcab7 AL |
305 | if (value == NULL) { |
306 | parse_error(ctxt, token, "Missing value in dict"); | |
307 | goto out; | |
308 | } | |
309 | ||
310 | qdict_put_obj(dict, qstring_get_str(qobject_to_qstring(key)), value); | |
311 | ||
4a5fcab7 | 312 | qobject_decref(key); |
4a5fcab7 AL |
313 | |
314 | return 0; | |
315 | ||
316 | out: | |
4a5fcab7 | 317 | qobject_decref(key); |
4a5fcab7 AL |
318 | |
319 | return -1; | |
320 | } | |
321 | ||
65c0f1e9 | 322 | static QObject *parse_object(JSONParserContext *ctxt, va_list *ap) |
4a5fcab7 AL |
323 | { |
324 | QDict *dict = NULL; | |
9bada897 | 325 | JSONToken *token, *peek; |
4a5fcab7 | 326 | |
65c0f1e9 | 327 | token = parser_context_pop_token(ctxt); |
9bada897 | 328 | assert(token && token->type == JSON_LCURLY); |
4a5fcab7 AL |
329 | |
330 | dict = qdict_new(); | |
331 | ||
65c0f1e9 | 332 | peek = parser_context_peek_token(ctxt); |
11e8a46c AL |
333 | if (peek == NULL) { |
334 | parse_error(ctxt, NULL, "premature EOI"); | |
335 | goto out; | |
336 | } | |
337 | ||
9bada897 | 338 | if (peek->type != JSON_RCURLY) { |
65c0f1e9 | 339 | if (parse_pair(ctxt, dict, ap) == -1) { |
4a5fcab7 AL |
340 | goto out; |
341 | } | |
342 | ||
65c0f1e9 | 343 | token = parser_context_pop_token(ctxt); |
11e8a46c AL |
344 | if (token == NULL) { |
345 | parse_error(ctxt, NULL, "premature EOI"); | |
346 | goto out; | |
347 | } | |
348 | ||
9bada897 PB |
349 | while (token->type != JSON_RCURLY) { |
350 | if (token->type != JSON_COMMA) { | |
4a5fcab7 AL |
351 | parse_error(ctxt, token, "expected separator in dict"); |
352 | goto out; | |
353 | } | |
4a5fcab7 | 354 | |
65c0f1e9 | 355 | if (parse_pair(ctxt, dict, ap) == -1) { |
4a5fcab7 AL |
356 | goto out; |
357 | } | |
358 | ||
65c0f1e9 | 359 | token = parser_context_pop_token(ctxt); |
11e8a46c AL |
360 | if (token == NULL) { |
361 | parse_error(ctxt, NULL, "premature EOI"); | |
362 | goto out; | |
363 | } | |
4a5fcab7 | 364 | } |
4a5fcab7 | 365 | } else { |
a491af47 | 366 | (void)parser_context_pop_token(ctxt); |
4a5fcab7 AL |
367 | } |
368 | ||
4a5fcab7 AL |
369 | return QOBJECT(dict); |
370 | ||
371 | out: | |
4a5fcab7 AL |
372 | QDECREF(dict); |
373 | return NULL; | |
374 | } | |
375 | ||
65c0f1e9 | 376 | static QObject *parse_array(JSONParserContext *ctxt, va_list *ap) |
4a5fcab7 AL |
377 | { |
378 | QList *list = NULL; | |
9bada897 | 379 | JSONToken *token, *peek; |
4a5fcab7 | 380 | |
65c0f1e9 | 381 | token = parser_context_pop_token(ctxt); |
9bada897 | 382 | assert(token && token->type == JSON_LSQUARE); |
4a5fcab7 AL |
383 | |
384 | list = qlist_new(); | |
385 | ||
65c0f1e9 | 386 | peek = parser_context_peek_token(ctxt); |
11e8a46c AL |
387 | if (peek == NULL) { |
388 | parse_error(ctxt, NULL, "premature EOI"); | |
389 | goto out; | |
390 | } | |
391 | ||
9bada897 | 392 | if (peek->type != JSON_RSQUARE) { |
4a5fcab7 AL |
393 | QObject *obj; |
394 | ||
65c0f1e9 | 395 | obj = parse_value(ctxt, ap); |
4a5fcab7 AL |
396 | if (obj == NULL) { |
397 | parse_error(ctxt, token, "expecting value"); | |
398 | goto out; | |
399 | } | |
400 | ||
401 | qlist_append_obj(list, obj); | |
402 | ||
65c0f1e9 | 403 | token = parser_context_pop_token(ctxt); |
11e8a46c AL |
404 | if (token == NULL) { |
405 | parse_error(ctxt, NULL, "premature EOI"); | |
406 | goto out; | |
407 | } | |
408 | ||
9bada897 PB |
409 | while (token->type != JSON_RSQUARE) { |
410 | if (token->type != JSON_COMMA) { | |
4a5fcab7 AL |
411 | parse_error(ctxt, token, "expected separator in list"); |
412 | goto out; | |
413 | } | |
414 | ||
65c0f1e9 | 415 | obj = parse_value(ctxt, ap); |
4a5fcab7 AL |
416 | if (obj == NULL) { |
417 | parse_error(ctxt, token, "expecting value"); | |
418 | goto out; | |
419 | } | |
420 | ||
421 | qlist_append_obj(list, obj); | |
422 | ||
65c0f1e9 | 423 | token = parser_context_pop_token(ctxt); |
11e8a46c AL |
424 | if (token == NULL) { |
425 | parse_error(ctxt, NULL, "premature EOI"); | |
426 | goto out; | |
427 | } | |
4a5fcab7 | 428 | } |
4a5fcab7 | 429 | } else { |
a491af47 | 430 | (void)parser_context_pop_token(ctxt); |
4a5fcab7 AL |
431 | } |
432 | ||
4a5fcab7 AL |
433 | return QOBJECT(list); |
434 | ||
435 | out: | |
4a5fcab7 AL |
436 | QDECREF(list); |
437 | return NULL; | |
438 | } | |
439 | ||
65c0f1e9 | 440 | static QObject *parse_keyword(JSONParserContext *ctxt) |
4a5fcab7 | 441 | { |
9bada897 | 442 | JSONToken *token; |
4a5fcab7 | 443 | |
65c0f1e9 | 444 | token = parser_context_pop_token(ctxt); |
9bada897 | 445 | assert(token && token->type == JSON_KEYWORD); |
50e2a467 | 446 | |
9bada897 | 447 | if (!strcmp(token->str, "true")) { |
d538b255 | 448 | return QOBJECT(qbool_from_bool(true)); |
9bada897 | 449 | } else if (!strcmp(token->str, "false")) { |
d538b255 | 450 | return QOBJECT(qbool_from_bool(false)); |
9bada897 | 451 | } else if (!strcmp(token->str, "null")) { |
d538b255 | 452 | return qnull(); |
4a5fcab7 | 453 | } |
9bada897 | 454 | parse_error(ctxt, token, "invalid keyword '%s'", token->str); |
4a5fcab7 AL |
455 | return NULL; |
456 | } | |
457 | ||
65c0f1e9 | 458 | static QObject *parse_escape(JSONParserContext *ctxt, va_list *ap) |
4a5fcab7 | 459 | { |
9bada897 | 460 | JSONToken *token; |
4a5fcab7 AL |
461 | |
462 | if (ap == NULL) { | |
d538b255 | 463 | return NULL; |
4a5fcab7 AL |
464 | } |
465 | ||
65c0f1e9 | 466 | token = parser_context_pop_token(ctxt); |
9bada897 | 467 | assert(token && token->type == JSON_ESCAPE); |
6b9606f6 | 468 | |
9bada897 | 469 | if (!strcmp(token->str, "%p")) { |
d538b255 | 470 | return va_arg(*ap, QObject *); |
9bada897 | 471 | } else if (!strcmp(token->str, "%i")) { |
d538b255 | 472 | return QOBJECT(qbool_from_bool(va_arg(*ap, int))); |
9bada897 | 473 | } else if (!strcmp(token->str, "%d")) { |
d538b255 | 474 | return QOBJECT(qint_from_int(va_arg(*ap, int))); |
9bada897 | 475 | } else if (!strcmp(token->str, "%ld")) { |
d538b255 | 476 | return QOBJECT(qint_from_int(va_arg(*ap, long))); |
9bada897 PB |
477 | } else if (!strcmp(token->str, "%lld") || |
478 | !strcmp(token->str, "%I64d")) { | |
d538b255 | 479 | return QOBJECT(qint_from_int(va_arg(*ap, long long))); |
9bada897 | 480 | } else if (!strcmp(token->str, "%s")) { |
d538b255 | 481 | return QOBJECT(qstring_from_str(va_arg(*ap, const char *))); |
9bada897 | 482 | } else if (!strcmp(token->str, "%f")) { |
d538b255 | 483 | return QOBJECT(qfloat_from_double(va_arg(*ap, double))); |
4a5fcab7 | 484 | } |
4a5fcab7 AL |
485 | return NULL; |
486 | } | |
487 | ||
65c0f1e9 | 488 | static QObject *parse_literal(JSONParserContext *ctxt) |
4a5fcab7 | 489 | { |
9bada897 | 490 | JSONToken *token; |
4a5fcab7 | 491 | |
65c0f1e9 | 492 | token = parser_context_pop_token(ctxt); |
d538b255 | 493 | assert(token); |
11e8a46c | 494 | |
9bada897 | 495 | switch (token->type) { |
4a5fcab7 | 496 | case JSON_STRING: |
d538b255 | 497 | return QOBJECT(qstring_from_escaped_str(ctxt, token)); |
3d5b3ec6 MR |
498 | case JSON_INTEGER: { |
499 | /* A possibility exists that this is a whole-valued float where the | |
500 | * fractional part was left out due to being 0 (.0). It's not a big | |
501 | * deal to treat these as ints in the parser, so long as users of the | |
502 | * resulting QObject know to expect a QInt in place of a QFloat in | |
503 | * cases like these. | |
504 | * | |
505 | * However, in some cases these values will overflow/underflow a | |
506 | * QInt/int64 container, thus we should assume these are to be handled | |
507 | * as QFloats/doubles rather than silently changing their values. | |
508 | * | |
509 | * strtoll() indicates these instances by setting errno to ERANGE | |
510 | */ | |
511 | int64_t value; | |
512 | ||
513 | errno = 0; /* strtoll doesn't set errno on success */ | |
9bada897 | 514 | value = strtoll(token->str, NULL, 10); |
3d5b3ec6 | 515 | if (errno != ERANGE) { |
d538b255 | 516 | return QOBJECT(qint_from_int(value)); |
3d5b3ec6 MR |
517 | } |
518 | /* fall through to JSON_FLOAT */ | |
519 | } | |
4a5fcab7 AL |
520 | case JSON_FLOAT: |
521 | /* FIXME dependent on locale */ | |
9bada897 | 522 | return QOBJECT(qfloat_from_double(strtod(token->str, NULL))); |
4a5fcab7 | 523 | default: |
d538b255 | 524 | abort(); |
4a5fcab7 | 525 | } |
4a5fcab7 AL |
526 | } |
527 | ||
65c0f1e9 | 528 | static QObject *parse_value(JSONParserContext *ctxt, va_list *ap) |
4a5fcab7 | 529 | { |
9bada897 | 530 | JSONToken *token; |
4a5fcab7 | 531 | |
d538b255 MA |
532 | token = parser_context_peek_token(ctxt); |
533 | if (token == NULL) { | |
534 | parse_error(ctxt, NULL, "premature EOI"); | |
535 | return NULL; | |
4a5fcab7 AL |
536 | } |
537 | ||
9bada897 | 538 | switch (token->type) { |
d538b255 MA |
539 | case JSON_LCURLY: |
540 | return parse_object(ctxt, ap); | |
541 | case JSON_LSQUARE: | |
542 | return parse_array(ctxt, ap); | |
543 | case JSON_ESCAPE: | |
544 | return parse_escape(ctxt, ap); | |
545 | case JSON_INTEGER: | |
546 | case JSON_FLOAT: | |
547 | case JSON_STRING: | |
548 | return parse_literal(ctxt); | |
549 | case JSON_KEYWORD: | |
550 | return parse_keyword(ctxt); | |
551 | default: | |
552 | parse_error(ctxt, token, "expecting value"); | |
553 | return NULL; | |
554 | } | |
4a5fcab7 AL |
555 | } |
556 | ||
95385fe9 | 557 | QObject *json_parser_parse(GQueue *tokens, va_list *ap) |
ef749d07 AL |
558 | { |
559 | return json_parser_parse_err(tokens, ap, NULL); | |
560 | } | |
561 | ||
95385fe9 | 562 | QObject *json_parser_parse_err(GQueue *tokens, va_list *ap, Error **errp) |
4a5fcab7 | 563 | { |
65c0f1e9 | 564 | JSONParserContext *ctxt = parser_context_new(tokens); |
4a5fcab7 AL |
565 | QObject *result; |
566 | ||
65c0f1e9 | 567 | if (!ctxt) { |
c1990ebf MR |
568 | return NULL; |
569 | } | |
4a5fcab7 | 570 | |
65c0f1e9 MR |
571 | result = parse_value(ctxt, ap); |
572 | ||
573 | error_propagate(errp, ctxt->err); | |
4a5fcab7 | 574 | |
65c0f1e9 | 575 | parser_context_free(ctxt); |
ef749d07 | 576 | |
4a5fcab7 AL |
577 | return result; |
578 | } |