Function create

python/IECore/Enum.py:56–118

( *names )

# assert( E.Orange != E.Apple )

def create( *names ) :

	@functools.total_ordering
	class Enum( object ) :

		__names = names

		def __init__( self, value ) :

			if isinstance( value, str ) :

				if value not in Enum.__names :
					raise ValueError( "Enum value out of range." )

				value = Enum.__names.index( value )

			else :

				if value < 0 or value >= len( Enum.__names ) :
					raise ValueError( "Enum value out of range." )

			self.__value = value

		def __hash__( self ) :

			return hash( ( self.__class__, self.__value ) )

		def __eq__( self, other ):

			if type( self ) is not type( other ):
				return False

			return  self.__value == other.__value

		def __ne__( self, other ):

			return not self.__eq__( other )

		def __lt__( self, other ):

			if type( self ) is not type( other ):
				raise TypeError( "Comparison not supported between instances of different Enum." )

			return self.__value < other.__value

		def __int__( self ) :

			return self.__value

		def __str__( self ) :

			return Enum.__names[self.__value]

		@classmethod
		def values( cls ) :

			return tuple( cls( i ) for i in range( 0, len(cls.__names) ) )