Edwin Wong | 27b5a35 | 2014-05-28 15:36:44 -0700 | [diff] [blame] | 1 | #ifndef __JSMN_H_ |
| 2 | #define __JSMN_H_ |
| 3 | |
Haibo Huang | 8e49843 | 2018-09-06 14:52:29 -0700 | [diff] [blame] | 4 | #include <stddef.h> |
| 5 | |
Edwin Wong | 27b5a35 | 2014-05-28 15:36:44 -0700 | [diff] [blame] | 6 | #ifdef __cplusplus |
| 7 | extern "C" { |
| 8 | #endif |
| 9 | |
| 10 | /** |
| 11 | * JSON type identifier. Basic types are: |
Haibo Huang | 8e49843 | 2018-09-06 14:52:29 -0700 | [diff] [blame] | 12 | * o Object |
| 13 | * o Array |
| 14 | * o String |
| 15 | * o Other primitive: number, boolean (true/false) or null |
Edwin Wong | 27b5a35 | 2014-05-28 15:36:44 -0700 | [diff] [blame] | 16 | */ |
| 17 | typedef enum { |
Haibo Huang | 8e49843 | 2018-09-06 14:52:29 -0700 | [diff] [blame] | 18 | JSMN_UNDEFINED = 0, |
| 19 | JSMN_OBJECT = 1, |
| 20 | JSMN_ARRAY = 2, |
| 21 | JSMN_STRING = 3, |
| 22 | JSMN_PRIMITIVE = 4 |
Edwin Wong | 27b5a35 | 2014-05-28 15:36:44 -0700 | [diff] [blame] | 23 | } jsmntype_t; |
| 24 | |
Haibo Huang | 8e49843 | 2018-09-06 14:52:29 -0700 | [diff] [blame] | 25 | enum jsmnerr { |
| 26 | /* Not enough tokens were provided */ |
| 27 | JSMN_ERROR_NOMEM = -1, |
| 28 | /* Invalid character inside JSON string */ |
| 29 | JSMN_ERROR_INVAL = -2, |
| 30 | /* The string is not a full JSON packet, more bytes expected */ |
| 31 | JSMN_ERROR_PART = -3 |
| 32 | }; |
Edwin Wong | 27b5a35 | 2014-05-28 15:36:44 -0700 | [diff] [blame] | 33 | |
| 34 | /** |
| 35 | * JSON token description. |
Haibo Huang | 8e49843 | 2018-09-06 14:52:29 -0700 | [diff] [blame] | 36 | * type type (object, array, string etc.) |
| 37 | * start start position in JSON data string |
| 38 | * end end position in JSON data string |
Edwin Wong | 27b5a35 | 2014-05-28 15:36:44 -0700 | [diff] [blame] | 39 | */ |
| 40 | typedef struct { |
Haibo Huang | 8e49843 | 2018-09-06 14:52:29 -0700 | [diff] [blame] | 41 | jsmntype_t type; |
| 42 | int start; |
| 43 | int end; |
| 44 | int size; |
Edwin Wong | 27b5a35 | 2014-05-28 15:36:44 -0700 | [diff] [blame] | 45 | #ifdef JSMN_PARENT_LINKS |
Haibo Huang | 8e49843 | 2018-09-06 14:52:29 -0700 | [diff] [blame] | 46 | int parent; |
Edwin Wong | 27b5a35 | 2014-05-28 15:36:44 -0700 | [diff] [blame] | 47 | #endif |
| 48 | } jsmntok_t; |
| 49 | |
| 50 | /** |
| 51 | * JSON parser. Contains an array of token blocks available. Also stores |
| 52 | * the string being parsed now and current position in that string |
| 53 | */ |
| 54 | typedef struct { |
Haibo Huang | 8e49843 | 2018-09-06 14:52:29 -0700 | [diff] [blame] | 55 | unsigned int pos; /* offset in the JSON string */ |
| 56 | unsigned int toknext; /* next token to allocate */ |
| 57 | int toksuper; /* superior token node, e.g parent object or array */ |
Edwin Wong | 27b5a35 | 2014-05-28 15:36:44 -0700 | [diff] [blame] | 58 | } jsmn_parser; |
| 59 | |
| 60 | /** |
| 61 | * Create JSON parser over an array of tokens |
| 62 | */ |
| 63 | void jsmn_init(jsmn_parser *parser); |
| 64 | |
| 65 | /** |
| 66 | * Run JSON parser. It parses a JSON data string into and array of tokens, each describing |
| 67 | * a single JSON object. |
| 68 | */ |
Haibo Huang | 8e49843 | 2018-09-06 14:52:29 -0700 | [diff] [blame] | 69 | int jsmn_parse(jsmn_parser *parser, const char *js, size_t len, |
| 70 | jsmntok_t *tokens, unsigned int num_tokens); |
Edwin Wong | 27b5a35 | 2014-05-28 15:36:44 -0700 | [diff] [blame] | 71 | |
| 72 | #ifdef __cplusplus |
| 73 | } |
| 74 | #endif |
| 75 | |
| 76 | #endif /* __JSMN_H_ */ |