//---------------------------------------------------------------------------
/*
                  深いコピーをするポインタ Ver.1.1  by Gimite

  コピー時に「深いコピー」（指す内容のコピー）を行うスマートポインタです。

*/
//---------------------------------------------------------------------------
#ifndef GIMITE_deep_ptrH
#define GIMITE_deep_ptrH
//---------------------------------------------------------------------------
#include <functional>
//---------------------------------------------------------------------------
namespace gimite{
//---------------------------------------------------------------------------
template <class T>
struct default_cloner: std::unary_function<const T*, T*>
{
  T* operator()(const T* src){return new T(*src);}
};

template <class T, class Cloner= default_cloner<T> >
class deep_ptr
{
public:
  typedef T value_type;
  typedef Cloner cloner_type;

  explicit deep_ptr(T* p= 0): p_(p){}
  deep_ptr(const deep_ptr& src): p_(src.p_? Cloner()(src.p_):0){}
  ~deep_ptr(){delete p_;}
  deep_ptr& operator=(const deep_ptr& src){
    if (&src!=this){
      delete p_;
      p_= src.p_? Cloner()(src.p_):0;
    }
    return *this;
  }
  T* get(){return p_;}
  const T* get()const{return p_;}
  void reset(T* p){
    delete p_;
    p_= p;
  }
  T& operator*(){return *p_;}
  const T& operator*()const{return *p_;}
  T* operator->(){return p_;}
  const T* operator->()const{return p_;}
  
private:
  T* p_;
  
};

//---------------------------------------------------------------------------
}//namespace gimite
//---------------------------------------------------------------------------
#endif