Function json_norm_value_free

strings/json_normalize.c:437–535

Free the entire JSON tree iteratively. */

  Free the entire JSON tree iteratively.
*/
static void json_norm_value_free(struct json_norm_value *root)
{
  DYNAMIC_ARRAY stack;
  struct json_norm_frame frame;
  struct json_norm_value *val;
  size_t i;

  if (json_norm_init_dynamic_array(sizeof(struct json_norm_frame), &stack))
    return;

  frame.val= root;
  frame.index= 0;
  frame.visited= UNPROCESSED;
  push_dynamic(&stack, &frame);

  do
  {
    frame= *(struct json_norm_frame *)pop_dynamic(&stack);
    val= frame.val;

    if (!val)
      continue;

    if (frame.visited > UNPROCESSED)
    {
      switch (val->type)
      {
        case JSON_VALUE_OBJECT:
          delete_dynamic(&val->value.object.kv_pairs);
          break;

        case JSON_VALUE_ARRAY:
          delete_dynamic(&val->value.array.values);
          break;

        case JSON_VALUE_STRING:
          json_norm_string_free(&val->value.string);
          break;

        case JSON_VALUE_NUMBER:
          json_norm_number_free(&val->value.number);
          break;

        default: break;
      }
      val->type= JSON_VALUE_UNINITIALIZED;
      continue;
    }

    frame.visited= CLOSE_NON_SCALAR;
    push_dynamic(&stack, &frame);

    switch (val->type)
    {
      case JSON_VALUE_OBJECT:
      {
        DYNAMIC_ARRAY *pairs= &val->value.object.kv_pairs;
        for (i= 0; i < pairs->elements; i++)