strong_typedef.cpp

#define BOOST_STRONG_TYPEDEF(T, D)                             \
  struct TextEncodingDict {                                    \
    T t;                                                       \
    D(const T t_) : t(t_){};                                   \
    D(){};                                                     \
    D(const D& t_) : t(t_.t) {}                                \
    D& operator=(const D& rhs) {                               \
      t = rhs.t;                                               \
      return *this;                                            \
    }                                                          \
    D& operator=(const T& rhs) {                               \
      t = rhs;                                                 \
      return *this;                                            \
    }                                                          \
    operator T() const { return t; }                           \
    operator T&() { return t; }                                \
    bool operator==(const D& rhs) const { return t == rhs.t; } \
    bool operator<(const D& rhs) const { return t < rhs.t; }   \
  };

BOOST_STRONG_TYPEDEF(int32_t, TextEncodingDict)