Object

Public Instance Methods

DelegateClass(superclass) click to toggle source

The primary interface to this library. Use to setup delegation when defining your class.

class MyClass < DelegateClass( ClassToDelegateTo )    # Step 1
  def initialize
    super(obj_of_ClassToDelegateTo)                   # Step 2
  end
end

 
               # File delegate.rb, line 356
def DelegateClass(superclass)
  klass = Class.new(Delegator)
  methods = superclass.instance_methods
  methods -= ::Delegator.public_api
  methods -= [:to_s,:inspect,:=~,:!~,:===]
  klass.module_eval do
    def __getobj__  # :nodoc:
      @delegate_dc_obj
    end
    def __setobj__(obj)  # :nodoc:
      raise ArgumentError, "cannot delegate to self" if self.equal?(obj)
      @delegate_dc_obj = obj
    end
    methods.each do |method|
      define_method(method, Delegator.delegating_block(method))
    end
  end
  klass.define_singleton_method :public_instance_methods do |all=true|
    super(all) - superclass.protected_instance_methods
  end
  klass.define_singleton_method :protected_instance_methods do |all=true|
    super(all) | superclass.protected_instance_methods
  end
  return klass
end

Commenting is here to help enhance the documentation. For example, code samples, or clarification of the documentation.

If you have questions about Ruby or the documentation, please post to one of the Ruby mailing lists. You will get better, faster, help that way.

If you wish to post a correction of the docs, please do so, but also file bug report so that it can be corrected for the next release. Thank you.

If you want to help improve the Ruby documentation, please see Improve the docs, or visit Documenting-ruby.org.

Home Classes Methods

In Files

Parent

Methods

Class/Module Index

Object

Public Instance Methods