Forwardable (Module)

In: forwardable.rb 
  forwardable.rb -
      $Release Version: 1.1$
      $Revision: 1.2 $
      $Date: 2001/11/03 13:41:57 $
      by Keiju ISHITSUKA(keiju@ishitsuka.com)
      original definition by delegator.rb

— Usage: 

  class Foo
    extend Forwardable

    def_delegators("@out", "printf", "print")
    def_delegators(:@in, :gets)
    def_delegator(:@contents, :[], "content_at")
  end
  f = Foo.new
  f.printf ...
  f.gets
  f.content_at(1)

  g = Goo.new
  g.extend SingleForwardable
  g.def_delegator("@out", :puts)
  g.puts ...

Attributes

debug  [RW] 

Public Instance methods

def_delegator(accessor, method, ali = method)

Alias for def_instance_delegator

def_delegators(accessor, *methods)

Alias for def_instance_delegators

def_instance_delegator(accessor, method, ali = method)

[Source]

# File forwardable.rb, line 43
  def def_instance_delegator(accessor, method, ali = method)
    accessor = accessor.id2name if accessor.kind_of?(Integer)
    method = method.id2name if method.kind_of?(Integer)
    ali = ali.id2name if ali.kind_of?(Integer)

    module_eval("def \#{ali}(*args, &block)\nbegin\n\#{accessor}.__send__(:\#{method}, *args, &block)\nrescue Exception\n$@.delete_if{|s| /^\\\\(__FORWARDABLE__\\\\):/ =~ s} unless Forwardable::debug\nKernel::raise\nend\nend\n", "(__FORWARDABLE__)", 1)
  end
def_instance_delegators(accessor, *methods)

[Source]

# File forwardable.rb, line 37
  def def_instance_delegators(accessor, *methods)
    for method in methods
      def_instance_delegator(accessor, method)
    end
  end

[Validate]