# File lib/ruby_parser/bm_sexp.rb, line 443
  def rhs
    expect :attrasgn, :safe_attrasgn, *ASSIGNMENT_BOOL

    if self.node_type == :attrasgn or self.node_type == :safe_attrasgn
      if self[2] == :[]=
        self[4]
      else
        self[3]
      end
    else
      self[2]
    end
  end