trema/trema-edge

#
# Copyright (C) 2008-2013 NEC Corporation
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License, version 2, as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
#


module Trema
  class OrderedHash
    attr_reader :keys


    def initialize
      @keys = Array.new
      @content = Hash.new
    end


    def size
      @content.size
    end


    def [] key
      @content[ key ]
    end


    def []= key, value
      @content[ key ] = value
      unless @keys.include?( key )
        @keys << key
      end
    end


    def values
      @keys.map do | each |
        @content[ each ]
      end
    end


    def clear
      @keys.clear
      @content.clear
      self
    end


    def each &block
      @keys.each do | each |
        block.call each, @content[ each ]
      end
    end
  end
end


### Local variables:
### mode: Ruby
### coding: utf-8
### indent-tabs-mode: nil
### End: