jsmn_helper.h

#ifndef JSMN_HELPER_H_
#define JSMN_HELPER_H_

#include <lib/jsmn.h>
#include <stdbool.h>

// This typedef is useful in avoiding accidental token modifications
typedef const jsmntok_t c_jsmntok_t;

int load_and_parse_json_file(const char *file_name, char **file_str_p, jsmntok_t **tokens_p);

struct _gnt_closure_t{
    int a;
    unsigned b;
};

#define GNT_CLOSURE_INITIALIZER {0, 0}

void        init_gnt_closure    (struct _gnt_closure_t *closure);

c_jsmntok_t*    get_next_token      (c_jsmntok_t *base_t, c_jsmntok_t *t, struct _gnt_closure_t *closure);

c_jsmntok_t*    get_value_token_by_key  (c_jsmntok_t *base_t, const char *base, c_jsmntok_t *t_obj, const char *key);

size_t      children_count_token    (c_jsmntok_t *base_t, c_jsmntok_t *t);

c_jsmntok_t*    get_at_token        (c_jsmntok_t *base_t, c_jsmntok_t *t, size_t i);

int         parse_double_token  (const char *base, c_jsmntok_t *t, double *result);

int         parse_unsigned_token    (const char *base, c_jsmntok_t *t, unsigned *result);

int         strcmp_token        (const char *base, c_jsmntok_t *t, const char* str);

int     parse_unsigned_by_key   (c_jsmntok_t *base_t, const char *base, c_jsmntok_t *t_obj, const char *key, unsigned *result);
int     parse_double_by_key (c_jsmntok_t *base_t, const char *base, c_jsmntok_t *t_obj, const char *key, double *result);
int     parse_boolean_by_key    (c_jsmntok_t *base_t, const char *base, c_jsmntok_t *t_obj, const char *key, bool *result);

int     parse_double_array  (c_jsmntok_t *base_t, const char *base, c_jsmntok_t *t_arr, unsigned expected_count, double *result);
unsigned    parse_string_choice (c_jsmntok_t *base_t, const char *base, c_jsmntok_t *t_str, unsigned cnt, const char *choices[cnt]);


#endif /* JSMN_HELPER_H_ */