if node == nil then
 			error('No Tree-Sitter parser found.')
 		end
+
+		while node ~= nil and node:type() ~= 'operation' do
+			node = node:parent()
+		end
+
+		if node ~= nil then
+			-- TODO
+		end
 	end, {
 		buffer = true,
 		noremap = true,