Class string_builder

generator/stringbuilder.h:6–21

template<typename T> struct string_builder_helper;

template <typename A, typename B> struct string_builder {
    typedef string_builder_helper<A> HA;
    typedef string_builder_helper<B> HB;
    operator std::string() const {
        std::string s;
        s.reserve(size());
        HA::append_to(s, a);
        HB::append_to(s, b);
        return s;
    }
    unsigned int size() const { return HA::size(a) + HB::size(b); }

    string_builder(const A &a, const B &b) : a(a), b(b) {}
    const A &a;
    const B &b;
};

template<> struct string_builder_helper<std::string> {
    typedef std::string T;