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// SPDX-License-Identifier: MIT
/*
* Copyright (c) 2010 Serge Zaitsev
*/
#ifndef __JSMN_H_
#define __JSMN_H_
#define JSMN_STRICT
#define JSMN_PARENT_LINKS
#include <stddef.h>
#include <errno.h>
#ifdef __cplusplus
extern "C" {
#endif
#ifdef JSMN_STATIC
#define JSMN_API static
#else
#define JSMN_API extern
#endif
/**
* JSON type identifier. Basic types are:
* o Object
* o Array
* o String
* o Other primitive: number, boolean (true/false) or null
*/
typedef enum {
JSMN_UNDEFINED = 0,
JSMN_OBJECT = 1 << 0,
JSMN_ARRAY = 1 << 1,
JSMN_STRING = 1 << 2,
JSMN_PRIMITIVE = 1 << 3
} jsmntype_t;
enum jsmnerr {
/* Not enough tokens were provided */
JSMN_ERROR_NOMEM = -ENOMEM,
/* Invalid character inside JSON string */
JSMN_ERROR_INVAL = -EINVAL,
/* The string is not a full JSON packet, more bytes expected */
JSMN_ERROR_PART = -EMSGSIZE
};
/**
* JSON token description.
* type type (object, array, string etc.)
* start start position in JSON data string
* end end position in JSON data string
*/
typedef struct jsmntok {
jsmntype_t type;
int start;
int end;
int size;
#ifdef JSMN_PARENT_LINKS
int parent;
#endif
} jsmntok_t;
/**
* JSON parser. Contains an array of token blocks available. Also stores
* the string being parsed now and current position in that string.
*/
typedef struct jsmn_parser {
unsigned int pos; /* offset in the JSON string */
unsigned int toknext; /* next token to allocate */
int toksuper; /* superior token node, e.g. parent object or array */
} jsmn_parser;
/**
* Create JSON parser over an array of tokens
*/
JSMN_API void jsmn_init(jsmn_parser *parser);
/**
* Run JSON parser. It parses a JSON data string into and array of tokens, each
* describing
* a single JSON object.
*/
JSMN_API int jsmn_parse(jsmn_parser *parser, const char *js, const size_t len,
jsmntok_t *tokens, const unsigned int num_tokens);
#ifdef __cplusplus
}
#endif
#endif /* JSMN_H */
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