/*! QString container concept (QStringList or QVector<QString>). */
template<typename T>
concept QStringContainer = std::same_as<T, QStringList> ||
                           std::same_as<T, QVector<QString>>;

struct BaseGrammar
{
    /*! Wrap an array of values. */
    auto wrapArray(QStringContainer auto values) const;
};

auto BaseGrammar::wrapArray(QStringContainer auto values) const
{
    for (auto &value : values)
        value = wrap(value);

    return values;
}