getter and setter with closure in coffeescript style attr_accessor of ruby

attr_accessor_with_closure.coffee

#this version don't work with prototype chain for generation variable prop_value with closure

Object::attr_accessor= (prop) ->
  self=@
  do ->
    prop_value=null
    self[prop]=(value) ->
      prop_value=value if value?
      prop_value


Player={}

Player.attr_accessor("name")

Player.name("mario")
alert Player.name()