auto GUI::XHTMLDisplayer::parseValue(const std::string& value)
    -> CSSValue
{
    // this regex should match any individual value
    static const std::regex regexIndivValue("^(.+?(\\(.*?\\)|\\\".*?\\\")*)(\\s+|,|$)");        // TODO: not perfect, eg. doesn't take into account nested parentheses

    // building the value
    CSSValue retValue;
    retValue.important = false;
    retValue.specificity[0] = retValue.specificity[1] = retValue.specificity[2] = retValue.specificity[3] = 0;
    retValue.values.resize(1);

    // iterating through the string, jumping from regex match to regex match
    std::smatch matchResults;
    for (auto i = value.begin(); i != value.end() && std::regex_search(i, value.end(), matchResults, regexIndivValue); i = matchResults[0].second) {
        if (matchResults[3].matched && matchResults[3].first != value.end() && *matchResults[3].first == ',')
            retValue.values.resize(retValue.values.size() + 1);
        try { retValue.values.back().push_back(parseIndividualValue(matchResults[1].str())); } catch(...) {}        // TODO: remove try-catch
    }

    // we finished, returning
    assert(retValue.values.size() >= 1 || value.empty());
    return retValue;
}