[BioRuby] New Bio::Sequence and Handlers

[Raoul Jean Pierre Bonnal]

Hello Guys, 
my solution to generalize Bio::Sequence for lazy loading or not,
discussed at Hackathon. Actually I don't know if this is the best
solution but works and keeps compatibility with current release. 
rename Bio::Sequence --> Bio::SequenceScratch

then define a new class reusing namespace Bio::Sequence:
module Bio
  class Sequence
    #Handler for the generic sequence
    attr_accessor :handler
    
    #Class Sequence initializer, actually not well coded.
    def initialize(obj)
      if obj.is_a?(String) 
        @handler= Bio::SequenceScratch.new(obj)
      else
        @handler=obj
      end
    end
    
    # Pass any unknown method calls to the wrapped sequence object.  see
    #
http://www.rubycentral.com/book/ref_c_object.html#Object.method_missing
    def method_missing(sym, *args, &block) #:nodoc:
      @handler.__send__(sym, *args, &block)
    end
  end
end


--
Ra