Prism::DotVisitor#visit_hash_pattern_node

# File tmp/rubies/ruby-4.0.0/lib/prism/dot_visitor.rb, line 2069
    def visit_hash_pattern_node(node)
      table = Table.new("HashPatternNode")
      id = node_id(node)

      # constant
      unless (constant = node.constant).nil?
        table.field("constant", port: true)
        digraph.edge("#{id}:constant -> #{node_id(constant)};")
      end

      # elements
      if node.elements.any?
        table.field("elements", port: true)

        waypoint = "#{id}_elements"
        digraph.waypoint("#{waypoint};")

        digraph.edge("#{id}:elements -> #{waypoint};")
        node.elements.each { |child| digraph.edge("#{waypoint} -> #{node_id(child)};") }
      else
        table.field("elements", "[]")
      end

      # rest
      unless (rest = node.rest).nil?
        table.field("rest", port: true)
        digraph.edge("#{id}:rest -> #{node_id(rest)};")
      end

      # opening_loc
      unless (opening_loc = node.opening_loc).nil?
        table.field("opening_loc", location_inspect(opening_loc))
      end

      # closing_loc
      unless (closing_loc = node.closing_loc).nil?
        table.field("closing_loc", location_inspect(closing_loc))
      end

      digraph.nodes << <<~DOT
        #{id} [
          label=<#{table.to_dot.gsub(/\n/, "\n  ")}>
        ];
      DOT

      super
    end