redef class MdHeading
	redef fun render_html(v) do
		v.add_line
		if v.enable_heading_ids then
			var id = self.id
			if id == null then
				id = v.strip_id(title)
				v.headings[id] = self
				self.id = id
			end
			v.add_raw "<h{level} id=\"{id}\">"
		else
			v.add_raw "<h{level}>"
		end
		visit_all(v)
		v.add_raw "</h{level}>"
		v.add_line
	end

	#
	var id: nullable String = null

	#
	fun title: String do
		var v = new RawTextVisitor
		return v.render(self)
	end
end

redef class MdHeading
	redef fun render_latex(v) do
		var level = self.level
		v.add_indent
		v.add_line
		if level == 1 then
			v.add_raw "\\section\{"
		else if level == 2 then
			v.add_raw "\\subsection\{"
		else if level == 3 then
			v.add_raw "\\subsubsection\{"
		else if level == 4 then
			v.add_raw "\\paragraph\{"
		else if level == 5 then
			v.add_raw "\\subparagraph\{"
		else
			# use bold for level 6 headings
			v.add_raw "\\textbf\{"
		end
		v.add_indent
		visit_all(v)
		v.add_raw "\}"
		v.add_line
	end
end

redef class MdHeading
	redef fun render_man(v) do
		var level = self.level

		if level == 1 then
			v.add ".SH "
		else if level == 2 then
			v.add ".SS "
		else if level >= 3 then
			# We use dictionary (titled paragraph) to simulate a 3rd level (or more)
			v.add ".TP\n"
		end
		visit_all(v)
		v.add_line
	end
end

redef class MdHeading
	redef fun render_md(v) do
		if is_setext then
			visit_all(v)
			var length_visitor = new TextLengthVisitor
			length_visitor.enter_visit(self)
			v.add_line
			if level == 1 then
				v.add_raw "=" * length_visitor.length
			else
				v.add_raw "-" * length_visitor.length
			end
		else
			v.add_raw "#" * level
			v.add_raw " "
			visit_all(v)
			if has_atx_trailing then
				v.add_raw " "
				v.add_raw "#" * level
			end
		end
		v.add_line
	end
end