Module: ParallelAncestry::Inheritance

Extended by:
Module::Cluster
Defined in:
lib/parallel_ancestry/inheritance.rb

Defined Under Namespace

Modules: ModuleSubclassInheritance

Instance Method Summary collapse

Instance Method Details

#initialize_base_instance_for_extend(inheriting_instance) ⇒ Object

initialize_base_instance_for_extend #



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# File 'lib/parallel_ancestry/inheritance.rb', line 75

def initialize_base_instance_for_extend( inheriting_instance )

  # Hook for extended module to redefine - nothing to do.
  
  return inheriting_instance
  
end

#initialize_base_instance_for_include(inheriting_instance) ⇒ Object

initialize_base_instance_for_include #



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# File 'lib/parallel_ancestry/inheritance.rb', line 64

def initialize_base_instance_for_include( inheriting_instance )

  # Initialize for future inheriting instances.
  return initialize_inheritance( inheriting_instance )
  
end

#initialize_inheritance(instance) ⇒ Object

initialize_inheritance #



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# File 'lib/parallel_ancestry/inheritance.rb', line 91

def initialize_inheritance( instance )

  unless @initialized_inheritance_for_instance[ instance ]

    inheritance_module = self

    if instance.is_a?( ::Class )

      instance.extend( ::Module::Cluster )
      
      instance.cluster( :parallel_ancestry ).subclass do |inheriting_subclass|
        inheritance_module.initialize_inheriting_instance( instance, inheriting_subclass, true )
        inheritance_module.initialize_inheritance( inheriting_subclass )
      end

    else

      instance.extend( ::Module::Cluster )

      instance.cluster( :parallel_ancestry ).before_include do |inheriting_module|
        inheritance_module.initialize_inheriting_instance( instance, inheriting_module )
        inheritance_module.initialize_inheritance( inheriting_module )
      end

      instance.cluster( :parallel_ancestry ).before_extend do |inheriting_module|
        inheritance_module.initialize_inheriting_instance( instance, inheriting_module, false, true )
      end
      
    end

    @initialized_inheritance_for_instance[ instance ] = true
  
  end

end

#initialize_inheritance_for_module! ⇒ Object

initialize_inheritance_for_module! #



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# File 'lib/parallel_ancestry/inheritance.rb', line 36

def initialize_inheritance_for_module!

  @initialized_inheritance_for_instance = { }
  
  extend ::Module::Cluster
  
  # When inheritance module is included in another module:
  cluster( :parallel_ancestry ).before_include do |base_instance|
    initialize_base_instance_for_include( base_instance )
  end

  # When inheritance module is used to extend another module:
  cluster( :parallel_ancestry ).before_extend do |base_instance|
    initialize_base_instance_for_extend( base_instance )
  end
  
  return self
  
end

#initialize_inheriting_instance(parent_instance, inheriting_instance, for_subclass = false, is_extending = false) ⇒ Object

initialize_inheriting_instance #



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# File 'lib/parallel_ancestry/inheritance.rb', line 131

def initialize_inheriting_instance( parent_instance, inheriting_instance, for_subclass = false, is_extending = false )

  # Hook for extended module to redefine - nothing to do.

  return inheriting_instance
  
end