new

# File actionpack/lib/action_dispatch/journey/path/pattern.rb, line 7
        def initialize(strexp)
          parser = Journey::Parser.new

          @anchored = true

          case strexp
          when String
            @spec         = parser.parse(strexp)
            @requirements = {}
            @separators   = "/.?"
          when Router::Strexp
            @spec         = parser.parse(strexp.path)
            @requirements = strexp.requirements
            @separators   = strexp.separators.join
            @anchored     = strexp.anchor
          else
            raise ArgumentError, "Bad expression: #{strexp}"
          end

          @names          = nil
          @optional_names = nil
          @required_names = nil
          @re             = nil
          @offsets        = nil
        end