shared_str.h

   1 #ifndef SHARED_STR_H
   2 #define SHARED_STR_H 1
   3
   4 class shared_str_b {
   5         FRIEND_SERIALIZE(shared_str_b)
   6         protected:
   7                 std::string s;
   8         public:
   9                 std::string &operator*() { return s; }
  10                 const std::string &operator*() const { return s; }
  11                 shared_str_b() { }
  12                 shared_str_b(const std::string &p) : s(p) { }
  13 };
  14
  15 class shared_str {
  16         FRIEND_SERIALIZE(shared_str)
  17         protected:
  18                 boost::shared_ptr<shared_str_b> p;
  19         public:
  20                 shared_str() : p(new shared_str_b()) { }
  21                 shared_str(const shared_str &v) : p(v.p) { }
  22                 shared_str(const std::string &p) : p(new shared_str_b(p)) { }
  23
  24                 std::string &operator*() { return **p; }
  25                 const std::string &operator*() const { return **p; }
  26                 std::string *operator->() { return &(**this); }
  27                 const std::string *operator->() const { return &(**this); }
  28 };
  29
  30 #endif