private class ASelfVisitor
	super Visitor
	var total: Int = 0
	var implicits: Int = 0

	redef fun visit(n)
	do
		if n isa ASelfExpr then
			self.total += 1
			if n isa AImplicitSelfExpr then
				self.implicits += 1
			end
		end
		n.visit_all(self)
	end
end