Function require_single_document

src/framework/io/yaml.cpp:172–192

};

void require_single_document(std::string_view text) {
    EventParser parser(text);
    int documents = 0;
    bool done = false;
    while (!done) {
        yaml_event_t event{};
        if (!yaml_parser_parse(&parser.parser(), &event)) {
            throw std::runtime_error(parser_error_message(parser.parser()));
        }
        const auto event_type = event.type;
        yaml_event_delete(&event);
        if (event_type == YAML_DOCUMENT_START_EVENT) {
            ++documents;
            if (documents > 1) {
                throw std::runtime_error("yaml config must contain exactly one document");
            }
        } else if (event_type == YAML_STREAM_END_EVENT) {
            done = true;
        }
    }
}

}  // namespace