#ifndef _utl_ShadowPtrPolicy_h_
#define _utl_ShadowPtrPolicy_h_

//#include <sys/types.h>
//#include <sstream>
#include <iostream>
//#include <algorithm>
#ifdef __GNUC__
#include <cxxabi.h>
#include <cstdlib>
#endif
#include <utl/AugerException.h>


namespace utl {

  class NoDereferenceCheck {
  public:
    template<typename T>
    static void Examine(T* const)
    { }
  };


  class ThrowOnZeroDereference {
  public:
    template<typename T>
    static
    void
    Examine(T* const ptr)
    {
      if (!ptr) {
        std::stringstream err;
        err << "Dereferencing zero pointer to ";
#ifdef __GNUC__
        int status;
        char* const rName =
          abi::__cxa_demangle(typeid(T).name(), 0, 0, &status);
        err << rName;
        free(rName);
#else
        err << typeid(T).name();
#endif
        std::cerr << err.str() << std::endl;
        throw utl::NonExistentComponentException(err.str());
      }
    }
  };

}

#endif