# Class Metric: Number of Virtual Types
class CNBV
	super MClassMetric
	super IntMetric
	redef fun name do return "cnbv"
	redef fun desc do return "number of accessible virtual types (inherited + local)"

	redef fun collect(mclasses) do
		for mclass in mclasses do
			values[mclass] = mclass.collect_accessible_vts(mainmodule, filter).length
		end
	end
end