16 lines
432 B
Ruby
16 lines
432 B
Ruby
|
class Module
|
||
|
|
def delegate(*methods)
|
||
|
|
options = methods.pop
|
||
|
|
unless options.is_a?(Hash) && to = options[:to]
|
||
|
|
raise ArgumentError, "Delegation needs a target. Supply an options hash with a :to key"
|
||
|
|
end
|
||
|
|
|
||
|
|
methods.each do |method|
|
||
|
|
module_eval(<<-EOS, "(__DELEGATION__)", 1)
|
||
|
|
def #{method}(*args, &block)
|
||
|
|
#{to}.__send__(#{method.inspect}, *args, &block)
|
||
|
|
end
|
||
|
|
EOS
|
||
|
|
end
|
||
|
|
end
|
||
|
|
end
|