Class: Weakling::IdHash

Inherits:
Object
  • Object
show all
Includes:
Enumerable
Defined in:
lib/weakling/collections.rb

Defined Under Namespace

Classes: IdWeakRef

Instance Method Summary collapse

Constructor Details

#initialize ⇒ IdHash

Returns a new instance of IdHash.



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# File 'lib/weakling/collections.rb', line 7

def initialize
  @hash = Hash.new
  @queue = Weakling::RefQueue.new
end

Instance Method Details

#[](id) ⇒ Object 



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# File 'lib/weakling/collections.rb', line 20

def [](id)
  _cleanup
  if wr = @hash[id]
    return wr.get rescue nil
  end

  return nil
end

#_cleanup ⇒ Object 



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# File 'lib/weakling/collections.rb', line 38

def _cleanup
  while ref = @queue.poll
    @hash.delete(ref.id)
  end
end

#add(object) ⇒ Object 



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# File 'lib/weakling/collections.rb', line 29

def add(object)
  _cleanup
  wr = IdWeakRef.new(object, @queue)

  @hash[wr.id] = wr

  return wr.id
end

#each ⇒ Object 



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# File 'lib/weakling/collections.rb', line 44

def each
  @hash.each {|id, wr| obj = wr.get rescue nil; yield [id,obj] if obj}
end