BasicObject
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