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Class: ActiveSupport::DescendantsTracker::WeakSet

Do not use. This class is for internal use only.
Relationships & Source Files
Super Chains via Extension / Inclusion / Inheritance
Class Chain:
self, ObjectSpace::WeakMap
Instance Chain:
self, ObjectSpace::WeakMap
Inherits: ObjectSpace::WeakMap
Defined in: activesupport/lib/active_support/descendants_tracker.rb,
activesupport/lib/active_support/descendants_tracker.rb

Overview

On TruffleRuby ObjectSpace::WeakMap keys are strong references. So we use object_id as a key and the actual object as a value.

JRuby for now doesn’t have Class#descendant, but when it will, it will likely have the same WeakMap semantic than Truffle so we future proof this as much as possible.

Class Method Summary

Instance Method Summary

Constructor Details

.new ⇒ WeakSet

[ GitHub ] 

  


# File 'activesupport/lib/active_support/descendants_tracker.rb', line 34



def initialize
  @map = ObjectSpace::WeakMap.new
end


  







Instance Method Details



  

    #<<(object)  
  



  

    

See additional method definition at line 23.


  



  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/descendants_tracker.rb', line 51



def <<(object)
  self[object] = true
end


  








  

    #[](object)  
    Also known as: #include?
  

  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/descendants_tracker.rb', line 38



def [](object)
  @map.key?(object.object_id)
end


  








  

    #[]=(object, _present)  
  

  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/descendants_tracker.rb', line 43



def []=(object, _present)
  @map[object.object_id] = object
end


  








  

    #include?(object)  
  



  

    

Alias for #[].


  



  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/descendants_tracker.rb', line 41



alias_method :include?, :[]


  








  

    #to_a  
  

  [ GitHub ]


  

  


# File 'activesupport/lib/active_support/descendants_tracker.rb', line 47



alias_method :to_a, :keys