class Prism::DotVisitor

def visit_rational_node(node)

Visit a RationalNode node. 
def visit_rational_node(node)
  table = Table.new("RationalNode")
  id = node_id(node)
  # numeric
  table.field("numeric", port: true)
  digraph.edge("#{id}:numeric -> #{node_id(node.numeric)};")
  digraph.nodes << <<~DOT
    #{id} [
      label=<#{table.to_dot.gsub(/\n/, "\n  ")}>
    ];
  DOT
  super
end