enumclass.h

// SPDX-License-Identifier: GPL-2.0+
 
#pragma once
 
template< typename T, T first, T last >
class Enum
{
public:
   class Iterator
   {
   public:
      Iterator( int value ) :
         m_value( value )
      { }
 
      T operator*( void ) const
      {
         return (T)m_value;
      }
 
      void operator++( void )
      {
         ++m_value;
      }
 
      bool operator!=( Iterator rhs )
      {
         return m_value != rhs.m_value;
      }
 
   private:
      int m_value;
   };
 
};
 
template< typename T, T first, T last >
typename Enum<T,first,last>::Iterator begin( Enum<T,first,last> )
{
   return typename Enum<T,first,last>::Iterator( (int)first );
}
 
template< typename T, T first, T last >
typename Enum<T,first,last>::Iterator end( Enum<T,first,last> )
{
   return typename Enum<T,first,last>::Iterator( ((int)last) + 1 );
}