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Tree: cec6448afd2f0c42739c510e602283f56518510c

Files: cec6448afd2f0c42739c510e602283f56518510c / jsmn.h

1584 bytesRaw
1#ifndef __JSMN_H_
2#define __JSMN_H_
3
4/**
5 * JSON type identifier. Basic types are:
6 * o Object
7 * o Array
8 * o String
9 * o Other primitive: number, boolean (true/false) or null
10 */
11typedef enum {
12 JSMN_PRIMITIVE = 0,
13 JSMN_OBJECT = 1,
14 JSMN_ARRAY = 2,
15 JSMN_STRING = 3
16} jsmntype_t;
17
18typedef enum {
19 /* Not enough tokens were provided */
20 JSMN_ERROR_NOMEM = -1,
21 /* Invalid character inside JSON string */
22 JSMN_ERROR_INVAL = -2,
23 /* The string is not a full JSON packet, more bytes expected */
24 JSMN_ERROR_PART = -3,
25 /* Everything was fine */
26 JSMN_SUCCESS = 0
27} jsmnerr_t;
28
29/**
30 * JSON token description.
31 * @param type type (object, array, string etc.)
32 * @param start start position in JSON data string
33 * @param end end position in JSON data string
34 */
35typedef struct {
36 jsmntype_t type;
37 int start;
38 int end;
39 int size;
40#ifdef JSMN_PARENT_LINKS
41 int parent;
42#endif
43} jsmntok_t;
44
45/**
46 * JSON parser. Contains an array of token blocks available. Also stores
47 * the string being parsed now and current position in that string
48 */
49typedef struct {
50 unsigned int pos; /* offset in the JSON string */
51 int toknext; /* next token to allocate */
52 int toksuper; /* superior token node, e.g parent object or array */
53} jsmn_parser;
54
55/**
56 * Create JSON parser over an array of tokens
57 */
58void jsmn_init(jsmn_parser *parser);
59
60/**
61 * Run JSON parser. It parses a JSON data string into and array of tokens, each describing
62 * a single JSON object.
63 */
64jsmnerr_t jsmn_parse(jsmn_parser *parser, const char *js,
65 jsmntok_t *tokens, unsigned int num_tokens);
66
67#endif /* __JSMN_H_ */
68

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