Class abstract_value

Source/Utils/cxxopts.hpp:1032–1160

    template <typename T>
    class abstract_value : public Value
    {
      using Self = abstract_value<T>;

      public:
      abstract_value()
      : m_result(std::make_shared<T>())
      , m_store(m_result.get())
      {
      }

      explicit abstract_value(T* t)
      : m_store(t)
      {
      }

      ~abstract_value() override = default;

      abstract_value& operator=(const abstract_value&) = default;

      abstract_value(const abstract_value& rhs)
      {
        if (rhs.m_result)
        {
          m_result = std::make_shared<T>();
          m_store = m_result.get();
        }
        else
        {
          m_store = rhs.m_store;
        }

        m_default = rhs.m_default;
        m_implicit = rhs.m_implicit;
        m_default_value = rhs.m_default_value;
        m_implicit_value = rhs.m_implicit_value;
      }

      void
      parse(const std::string& text) const override
      {
        parse_value(text, *m_store);
      }

      bool
      is_container() const override
      {
        return type_is_container<T>::value;
      }

      void
      parse() const override
      {
        parse_value(m_default_value, *m_store);
      }

      bool
      has_default() const override