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Defined Under Namespace

Modules: Proxeze

Instance Method Summary collapse

Instance Method Details

#DelegateClass(superclass) ⇒ Object 



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# File 'lib/proxeze/delegator_blocks.rb', line 41

def DelegateClass(superclass)
  klass = Class.new
  methods = superclass.public_instance_methods(true)
  methods -= ::Kernel.public_instance_methods(false)
  methods |= ["to_s","to_a","inspect","==","=~","==="]
  klass.module_eval {
    def initialize(obj)  # :nodoc:
      @_dc_obj = obj
    end
    def method_missing(m, *args, &block)  # :nodoc:
      unless @_dc_obj.respond_to?(m)
        super(m, *args, &block)
      end
      @_dc_obj.__send__(m, *args, &block)
    end
    def respond_to?(m, include_private = false)  # :nodoc:
      return true if super
      return @_dc_obj.respond_to?(m, include_private)
    end
    def __getobj__  # :nodoc:
      @_dc_obj
    end
    def __setobj__(obj)  # :nodoc:
      raise ArgumentError, "cannot delegate to self" if self.equal?(obj)
      @_dc_obj = obj
    end
    def clone  # :nodoc:
      new = super
      new.__setobj__(__getobj__.clone)
      new
    end
    def dup  # :nodoc:
      new = super
      new.__setobj__(__getobj__.clone)
      new
    end
  }
  for method in methods
    begin
      klass.module_eval do
        define_method method, Delegator.delegating_block(method)
      end
    rescue SyntaxError
      raise NameError, "invalid identifier %s" % method, caller(3)
    end
  end
  return klass
end