/*
 * This is a wrapper class which is needed by boost.serialization because it considers strings to be a primitive type.
 * This causes problems in archiving via pointer.
 * The solution is to use this type instead of std::string when pointer samatics  are used.
 */
#ifndef tracked_string_H
#define tracked_string_H
#include <string>
class tracked_string {
public:
  tracked_string() {}
  tracked_string(const std::string& src) {
    m_string = src;
  }
  tracked_string(const tracked_string& src) :
    m_string(src)
  {}
  template<class Archive>
  void serialize(Archive &ar, unsigned int version) {
    ar & m_string;
  }
  // casting operators 
  operator std::string() const {
    return m_string;
  }
  operator std::string() {
    return m_string;
  }
private:
  std::string m_string;     // the real data
};
#endif