enumclass.h

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// 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 );
}