comparison: src/json.c
src/json.c
- changeset 946
- b428424c0214
- parent 944
- c26299cc9897
equal
deleted
inserted
replaced
| 945:84a5fab8a47c | 946:b428424c0214 |
|---|---|
| 36 * RFC 8259 | 36 * RFC 8259 |
| 37 * https://tools.ietf.org/html/rfc8259 | 37 * https://tools.ietf.org/html/rfc8259 |
| 38 */ | 38 */ |
| 39 | 39 |
| 40 #define PARSER_STATES_ALLOC 32 | 40 #define PARSER_STATES_ALLOC 32 |
| 41 #define PARSER_READVALUE_ALLOC 32 | |
| 41 | 42 |
| 42 static CxJsonValue cx_json_value_nothing = {.type = CX_JSON_NOTHING}; | 43 static CxJsonValue cx_json_value_nothing = {.type = CX_JSON_NOTHING}; |
| 43 | 44 |
| 44 | 45 |
| 45 static int token_append(CxJsonToken *token, const char *buf, size_t len) { | 46 static int token_append(CxJsonToken *token, const char *buf, size_t len) { |
| 337 | 338 |
| 338 return 0; | 339 return 0; |
| 339 } | 340 } |
| 340 | 341 |
| 341 static int add_state(CxJson *p, int state) { | 342 static int add_state(CxJson *p, int state) { |
| 343 // TODO: this is such a common pattern, try to reuse code here | |
| 342 if (p->nstates >= p->states_alloc) { | 344 if (p->nstates >= p->states_alloc) { |
| 343 p->states_alloc += PARSER_STATES_ALLOC; | 345 unsigned newcap = PARSER_STATES_ALLOC; |
| 344 if (cx_reallocate(&p->states, p->states_alloc * sizeof(int))) { | 346 if (p->states == p->states_internal) { |
| 345 return 1; | 347 void *mem = malloc(newcap * sizeof(int)); |
| 346 } | 348 if (mem == NULL) return 1; |
| 349 memcpy(mem, p->states, p->nstates * sizeof(int)); | |
| 350 p->states = mem; | |
| 351 } else { | |
| 352 newcap += p->states_alloc; | |
| 353 if (cx_reallocate(&p->states, newcap * sizeof(int))) { | |
| 354 return 1; | |
| 355 } | |
| 356 } | |
| 357 p->states_alloc = newcap; | |
| 347 } | 358 } |
| 348 p->states[++p->nstates] = state; | 359 p->states[++p->nstates] = state; |
| 349 return 0; | 360 return 0; |
| 350 } | 361 } |
| 351 | 362 |
| 543 } | 554 } |
| 544 | 555 |
| 545 /* -------------------- read value functions -------------------- */ | 556 /* -------------------- read value functions -------------------- */ |
| 546 | 557 |
| 547 static int setup_read_value(CxJson *p) { | 558 static int setup_read_value(CxJson *p) { |
| 548 p->readvalue_alloc = PARSER_STATES_ALLOC; | 559 p->readvalue_alloc = PARSER_READVALUE_ALLOC; |
| 549 p->readvalue_nelm = 0; | 560 p->readvalue_nelm = 0; |
| 550 p->readvalue_stack = calloc(PARSER_STATES_ALLOC, sizeof(CxJsonValue *)); | 561 p->readvalue_stack = calloc(p->readvalue_alloc, sizeof(CxJsonValue *)); |
| 551 if (!p->readvalue_stack) return -1; | 562 if (!p->readvalue_stack) return -1; |
| 552 | 563 |
| 553 p->read_value = NULL; | 564 p->read_value = NULL; |
| 554 p->readvalue_stack[0] = NULL; | 565 p->readvalue_stack[0] = NULL; |
| 555 | 566 |
| 657 return 0; | 668 return 0; |
| 658 } | 669 } |
| 659 | 670 |
| 660 void cxJsonInit(CxJson *json) { | 671 void cxJsonInit(CxJson *json) { |
| 661 memset(json, 0, sizeof(CxJson)); | 672 memset(json, 0, sizeof(CxJson)); |
| 662 // TODO: do not allocate states right away | 673 json->states = json->states_internal; |
| 663 json->states_alloc = PARSER_STATES_ALLOC; | 674 json->states_alloc = cx_nmemb(json->states_internal); |
| 664 json->states = calloc(PARSER_STATES_ALLOC, sizeof(int)); | |
| 665 // TODO: find better way to configure the initial allocation size for arrays and objects | 675 // TODO: find better way to configure the initial allocation size for arrays and objects |
| 666 json->reader_array_alloc = 8; | 676 json->reader_array_alloc = 8; |
| 667 } | 677 } |
| 668 | 678 |
| 669 void cxJsonDestroy(CxJson *p) { | 679 void cxJsonDestroy(CxJson *p) { |
| 670 free(p->states); | 680 if (p->states != p->states_internal) { |
| 681 free(p->states); | |
| 682 } | |
| 671 free(p->readvalue_stack); | 683 free(p->readvalue_stack); |
| 672 cxJsonValueFree(p->read_value); | 684 cxJsonValueFree(p->read_value); |
| 673 free(p->value_name); | 685 free(p->value_name); |
| 674 free(p->value_str); | 686 free(p->value_str); |
| 675 } | 687 } |
| 682 } | 694 } |
| 683 | 695 |
| 684 int cxJsonNext(CxJson *p, CxJsonValue **value) { | 696 int cxJsonNext(CxJson *p, CxJsonValue **value) { |
| 685 // TODO: replace int with a status enum like in CxProperties | 697 // TODO: replace int with a status enum like in CxProperties |
| 686 | 698 |
| 687 *value = NULL; | 699 *value = NULL; // TODO: maybe better initialize with NOTHING? |
| 688 if (!p->readvalue_stack) { | 700 if (!p->readvalue_stack) { |
| 689 if (setup_read_value(p)) return -1; | 701 if (setup_read_value(p)) return -1; |
| 690 } | 702 } |
| 691 | 703 |
| 692 while (p->readvalue_nelm > 0 || !p->read_value) { | 704 while (p->readvalue_nelm > 0 || !p->read_value) { |
