# Collect metrics about `mpackage`
	fun collect_metrics do
		if not has_package_dir then
			print "Warning: no source file for `{mpackage}`"
			self["has_package"] = 0
			return
		end
		self["has_package"] = 1

		if not has_readme then
			print "Warning: no readme file for `{mpackage}`"
			self["has_readme"] = 0
			return
		end
		self["has_readme"] = 1
		self["md_lines"] = md_lines.length

		var parser = new MdParser
		var node = parser.parse(md_lines.join("\n"))
		var v = new MarkdownMetrics
		v.enter_visit(node)
		for md_node, value in v.nodes_counter do
			self[md_node] = value
		end
		for level, value in v.headings_counter do
			self["HL {level}"] = value
		end
	end