Function jsmn_alloc_token

tools/json-graph/src/jsmn.h:106–120

* Allocates a fresh unused token from the token pool. */

 * Allocates a fresh unused token from the token pool.
 */
static jsmntok_t *jsmn_alloc_token(jsmn_parser *parser, jsmntok_t *tokens,
                                   const size_t num_tokens) {
  jsmntok_t *tok;
  if (parser->toknext >= num_tokens) {
    return NULL;
  }
  tok = &tokens[parser->toknext++];
  tok->type   = JSMN_UNDEFINED;
  tok->start  = tok->end = -1;
  tok->size   = 0;
#ifdef JSMN_PARENT_LINKS
  tok->parent = -1;
#endif
  return tok;
}

/**
 * Fills token type and boundaries.