predicate_to_string

# File lib/rexml/parsers/xpathparser.rb, line 130
      def predicate_to_string( path, &block )
        string = ""
        case path[0]
        when :and, :or, :mult, :plus, :minus, :neq, :eq, :lt, :gt, :lteq, :gteq, :div, :mod, :union
          op = path.shift
          case op
          when :eq
            op = "="
          when :lt
            op = "<"
          when :gt
            op = ">"
          when :lteq
            op = "<="
          when :gteq
            op = ">="
          when :neq
            op = "!="
          when :union
            op = "|"
          end
          left = predicate_to_string( path.shift, &block )
          right = predicate_to_string( path.shift, &block )
          string << " "
          string << left
          string << " "
          string << op.to_s
          string << " "
          string << right
          string << " "
        when :function
          path.shift
          name = path.shift
          string << name
          string << "( "
          string << predicate_to_string( path.shift, &block )
          string << " )"
        when :literal
          path.shift
          string << " "
          string << path.shift.inspect
          string << " "
        else
          string << " "
          string << yield( path )
          string << " "
        end
        return string.squeeze(" ")
      end