_Boolean.hh

    
#ifndef ALREADY_INCLUDED_2006_LIBD_BOOLEAN_HH
#define ALREADY_INCLUDED_2006_LIBD_BOOLEAN_HH

#include "libd.hh"

namespace dmp
{
   ///
   /// NOTE: size = 4 + 12 = 16
   ///
   class Boolean : private Single
   {
   public:
      bool v;

private:
      Boolean(bool v) : Single(DCODE_BOOLEAN)
      {
         this->v = v;
      }

public:
      static ptr<Boolean> ctor()
      {
         return new Boolean(false);
      }
      static ptr<Boolean> ctor(bool v)
      {
         return new Boolean(v);
      }

private:
      ///
      /// NOTE: opens up ~Boolean() to ptr class
      ///
      template <class T> friend class ptr;
      ~Boolean()
      {
         ///
         /// NOTE: do nothing
         ///
      }

#ifdef DAVINS_IO_ONLINE
      friend dmp::Writer& operator << (dmp::Writer& w, Boolean& ba)
      {
         w << ba.v;
         return w;
      }
#endif /* DAVINS_IO_ONLINE */

      ///
      /// NOTE: disables passing and returning by value
      ///
   private:
      Boolean(const Boolean&);
      Boolean& operator = (const Boolean&);

      ///
      /// USED BY: *_equals methods
      ///
      friend bool operator == (const Boolean& b1, const Boolean& b2)
      {
         return b1.v == b2.v;
      }
      friend bool operator != (const Boolean& b1, const Boolean& b2)
      {
         return b1.v != b2.v;
      }
   };
}

#endif /* ALREADY_INCLUDED_2006_LIBD_BOOLEAN_HH */