AutoPointer.hpp

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// ANNA - Anna is Not Nothingness Anymore                                                         //
//                                                                                                //
// (c) Copyright 2005-2015 Eduardo Ramos Testillano & Francisco Ruiz Rayo                         //
//                                                                                                //
// See project site at http://redmine.teslayout.com/projects/anna-suite                           //
// See accompanying file LICENSE or copy at http://www.teslayout.com/projects/public/anna.LICENSE //


#ifndef anna_core_AutoPointer_hpp
#define anna_core_AutoPointer_hpp

#include <anna/core/util/String.hpp>

namespace anna {

class AutoPointer {
public:
  struct WhenFinished  {
    enum _v {
      Ignore ,
      Delete  
    };
  };

  virtual ~AutoPointer() {;}

  WhenFinished::_v getWhenFinished() const { return a_whenFinished; }

  void setWhenFinished(const  WhenFinished::_v whenFinished) { a_whenFinished = whenFinished; }

  virtual String asString() const ;

  template <typename T> static T* release(T& instance)
  {
    return release(&instance);
  }

  template <typename T> static T* release(T* instance)
  {
    if(instance == NULL)
      return NULL;

    if(instance->getWhenFinished() == WhenFinished::Delete) {
      delete instance;
      instance = NULL;
    }

    return instance;
  }

  static const char* className() { return "AutoPointer"; }

protected:
  AutoPointer(const WhenFinished::_v whenFinished) : a_whenFinished(whenFinished) {;}

private:
  WhenFinished::_v a_whenFinished;
};

}

#endif