Function BuildScript

src/script/script.h:611–632

/** Build a script by concatenating other scripts, or any argument accepted by CScript::operator<<. */
template<typename... Ts>
CScript BuildScript(Ts&&... inputs)
{
    CScript ret;
    int cnt{0};

    ([&ret, &cnt] (Ts&& input) {
        if constexpr (std::is_same_v<std::remove_cv_t<std::remove_reference_t<Ts>>, CScript>) {
            // If it is a CScript, extend ret with it. Move or copy the first element instead.
            if (cnt == 0) {
                ret = std::forward<Ts>(input);
            } else {
                ret.insert(ret.end(), input.begin(), input.end());
            }
        } else {
            // Otherwise invoke CScript::operator<<.
            ret << input;
        }
        cnt++;
    } (std::forward<Ts>(inputs)), ...);

    return ret;
}

#endif // BITCOIN_SCRIPT_SCRIPT_H