# File lib/code_analyzer/sexp.rb, line 809
  def to_s
    case sexp_type
    when :string_literal, :xstring_literal, :string_content, :const_ref, :symbol_literal, :symbol,
         :args_add_block, :var_ref, :vcall, :var_field,
         :@ident, :@tstring_content, :@const, :@ivar, :@kw, :@gvar, :@cvar
      self[1].to_s
    when :string_add
      if s(:string_content) == self[1]
        self[2].to_s
      else
        self[1].to_s
      end
    when :args_add
      if s(:args_new) == self[1]
        self[2].to_s
      else
        self[1].to_s
      end
    when :qwords_add
      self[2].to_s
    when :word_add
      self[2].to_s
    when :const_path_ref
      "#{self[1]}::#{self[2]}"
    when :@label
      self[1].to_s[0..-2]
    when :aref
      "#{self[1]}[#{self[2]}]"
    when :call, :field
      "#{self.receiver}.#{self.message}"
    when :top_const_ref
      "::#{self[1]}"
    else
      ""
    end
  end