class Wref::Implementations::IdClassUnique

Public Class Methods

new(object) click to toggle source
# File lib/wref/implementations/id_class_unique.rb, line 2
def initialize(object)
  @id = object.__id__
  @class_name = object.class.name.to_sym
  ObjectSpace.define_finalizer(object, method(:destroy))
  @unique_id = object.__wref_unique_id__ if object.respond_to?(:__wref_unique_id__)
end

Public Instance Methods

alive?() click to toggle source
# File lib/wref/implementations/id_class_unique.rb, line 41
def alive?
  if get
    return true
  else
    return false
  end
end
get() click to toggle source
# File lib/wref/implementations/id_class_unique.rb, line 15
def get
  return nil if !@class_name || !@id

  begin
    object = ObjectSpace._id2ref(@id)
  rescue RangeError
    destroy
    return nil
  end

  #Some times this class-name will be nil for some reason - knj
  object_class_name = object.class.name

  if !object_class_name || @class_name != object_class_name.to_sym || @id != object.__id__
    destroy
    return nil
  end

  if @unique_id
    destroy
    return nil if !object.respond_to?(:__wref_unique_id__) || object.__wref_unique_id__ != @unique_id
  end

  return object
end
get!() click to toggle source
# File lib/wref/implementations/id_class_unique.rb, line 9
def get!
  object = get
  raise ::Wref::Recycled unless object
  return object
end

Private Instance Methods

destroy(*args) click to toggle source
# File lib/wref/implementations/id_class_unique.rb, line 51
def destroy(*args)
  @id = nil
  @class_name = nil
  @unique_id = nil
end