Function parse

tools/json-graph/src/jgflib.c:217–256

Parse the JSON input (global) into an array of tokens. Returns the allocated token array. The number of tokens is passed back via num_tokens. */

    The number of tokens is passed back via num_tokens.
*/
static jsmntok_t *parse(int *num_tokens)
{
  jsmn_parser parser;
  size_t nalloc = 1024;         /* tokens allocated */
  size_t nread = read_input();
  int ntokens;
  jsmntok_t *tokens;

  if (debug)
    fprintf(stderr, "(D): Parsing the input...\n");
  jsmn_init(&parser);
  tokens = malloc(nalloc * sizeof(tokens[0]));

 restart: {
    ntokens = jsmn_parse(&parser, input, nread, tokens, nalloc);
    switch (ntokens) {
    case JSMN_ERROR_NOMEM:
      /* Reallocate and keep going. */
      if (debug)
        fprintf(stderr, "(D): Reallocating tokens array.\n");
      nalloc <<= 1;
      tokens = realloc((void *)tokens, nalloc * sizeof(tokens[0]));
      goto restart;
      
    case JSMN_ERROR_INVAL:
      fprintf(stderr, "(E): Invalid character in input.\n");
      exit(2);
      
    case JSMN_ERROR_PART:
      /* Should never happen! */
      fprintf(stderr, "(E): Incomplete input, more bytes expected.\n");
      exit(3);

    default:
      break;
    }
  }
  *num_tokens = ntokens;
  return tokens;
}

/** Returns string representation for JSON type. */
static const char *type(jsmntype_t t)