# Assign a position in the environment to each local variable
	# *`vm` The current VirtualMachine
	redef fun numbering_variables(vm: VirtualMachine)
	do
		# The position in the environment
		var position = 0

		# The `self` variable has the first position
		if self.selfvariable != null then
			self.selfvariable.position = position
			position += 1
		end

		# Recursively go into the AST nodes to number all local variables
		if n_block != null then
			position = vm.numbering(self.n_block, position)
		end

		is_numbering = true

		# The size of the environment to create to execute a call to this method
		environment_size = position
	end

	# Assign a position in the environment to each local variable
	# *`vm` The current VirtualMachine
	redef fun numbering_variables(vm: VirtualMachine)
	do
		# The position in the environment
		var position = 0

		# The `self` variable has the first position
		if self.selfvariable != null then
			self.selfvariable.position = position
			position += 1
		end

		# Number the parameters
		for i in [0..mpropdef.msignature.arity[ do
			var variable = self.n_signature.n_params[i].variable
			variable.as(not null).position = position
			position += 1
		end

		# Recursively go into the AST nodes to number all local variables
		if n_block != null then
			position = vm.numbering(self.n_block, position)
		end

		is_numbering = true

		# The size of the environment to create to execute a call to this method
		environment_size = position
	end