Refactoring: Refactorings/Inline Class

If a class is not doing much; merge it with another class. Logically the inverse of Inline Class

Mechanics

1. Determine the public protocol of the source class onto the absorbing class. Delegate all these methods to the source class.
2. Change all reference from the source class to the absorbing class
3. Test
4. Use Move Method and Move Field to move features from the source class to the absorbing class until there is nothing left
5. Hold a short, simple funeral service :)

Example

Before

class Person
  attr_reader :name
  def initialize
    @office_telephone = TelephoneNumber.new
  end

  def telephone_number
    @office_telephone.telephone_number
  end

  def office_telephone
    @office_telephone
  end
end

class TelephoneNumber
  attr_accessor :area_code, :number

  def telephone_number
    '(' + area_code + ') ' + number
  end
end

After

class Person
  def area_code
    @office_telephone.area_code
  end

  def areaa_code=(arg)
    @office_telephone.area_code = arg
  end

  def number
    @office_telephone.number
  end

  def number=(arg)
    @office_telephone.number = arg
  end
end

# ...