Contents

module Commute

  # Internal: A Path is that wraps some enums and
  # returns there values in the order that you added them.
  #
  class Path

    # Internal: Initialize the path with a main route.
    #
    # main - An enumerable to start the path with.
    #
    def initialize main
      @path = []
      self << main
    end

    # Internal: Push a route on the path (detour).
    #
    # route - An enumerable to walk first before continuing.
    def << route
      @path << route
    end

    # Internal: Figures out the successor in the path.
    #
    # Returns the next stop on the path.
    def succ
      begin
        return nil if @path.empty?
        @path.last.next
      rescue StopIteration
        @path.pop
        retry
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
commute-0.3.0.pre.2	lib/commute/core/util/path.rb
commute-0.3.0.pre	lib/commute/core/util/path.rb