Method: CircularObjectContainer#initialize

Defined in:
lib/blockify.rb

#initialize(obj) ⇒ CircularObjectContainer

Returns a new instance of CircularObjectContainer.



299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
 
# File 'lib/blockify.rb', line 299

def initialize(obj)
  @id = obj.object_id
  if obj.respond_to? :each_pair
    @obj = obj.class.new  # create a blank slate
    obj.each_pair do |key,val|
      if val.respond_to? :each
        @obj[key] = val.class.new  # go no further
      else
        tval = val.dup  rescue val
        @obj[key] = tval
      end
    end
    self.instance_eval do # yes we want a singleton method here!
      def each_pair(&block)
        @obj.each_pair &block
      end
      def each(&block)
        @obj.each &block
      end
      def [](key)
        @obj[key]
      end
    end 
  elsif obj.respond_to? :each
    @obj = obj.class.new  # create a blank slate
    obj.each do |val|
      if val.respond_to? :each
        @obj.push val.class.new
      else
        tval = val.dup rescue val
        @obj.push tval
      end
    end
    self.instance_eval do  # yes we want a singleton method here!
      def each(&block)
        @obj.each &block
      end
      def [](idx)
        @obj[idx]
      end        
    end 
  else
    @obj = obj.dup rescue obj  
  end
  @obj.freeze
  self.freeze
  self
end