static void json_message_process_token(JSONLexer *lexer, QString *token, JSONTokenType type, int x, int y) { JSONMessageParser *parser = container_of(lexer, JSONMessageParser, lexer); QDict *dict; if (type == JSON_OPERATOR) { switch (qstring_get_str(token)[0]) { case '{': parser->brace_count++; break; case '}': parser->brace_count--; break; case '[': parser->bracket_count++; break; case ']': parser->bracket_count--; break; default: break; } } dict = qdict_new(); qdict_put(dict, "type", qint_from_int(type)); QINCREF(token); qdict_put(dict, "token", token); qdict_put(dict, "x", qint_from_int(x)); qdict_put(dict, "y", qint_from_int(y)); parser->token_size += token->length; qlist_append(parser->tokens, dict); if (type == JSON_ERROR) { goto out_emit_bad; } else if (parser->brace_count < 0 || parser->bracket_count < 0 || (parser->brace_count == 0 && parser->bracket_count == 0)) { goto out_emit; } else if (parser->token_size > MAX_TOKEN_SIZE || parser->bracket_count > MAX_NESTING || parser->brace_count > MAX_NESTING) { /* Security consideration, we limit total memory allocated per object * and the maximum recursion depth that a message can force. */ goto out_emit; } return; out_emit_bad: /* clear out token list and tell the parser to emit and error * indication by passing it a NULL list */ QDECREF(parser->tokens); parser->tokens = NULL; out_emit: /* send current list of tokens to parser and reset tokenizer */ parser->brace_count = 0; parser->bracket_count = 0; parser->emit(parser, parser->tokens); if (parser->tokens) { QDECREF(parser->tokens); } parser->tokens = qlist_new(); parser->token_size = 0; }