Prism::DotVisitor#visit_if_node

# File tmp/rubies/ruby-4.0.0/lib/prism/dot_visitor.rb, line 2118
    def visit_if_node(node)
      table = Table.new("IfNode")
      id = node_id(node)

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

      # predicate
      table.field("predicate", port: true)
      digraph.edge("#{id}:predicate -> #{node_id(node.predicate)};")

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

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

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

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

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

      super
    end