Module: RefCheck

Included in:
Array, CfnDsl::JSONable, Hash
Defined in:
lib/cfndsl/RefCheck.rb

Instance Method Summary collapse

Instance Method Details

#ref_childrenObject


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# File 'lib/cfndsl/RefCheck.rb', line 30

def ref_children
  return []
end

#references(refs) ⇒ Object

This module defines some methods for walking the reference tree of various objects.


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# File 'lib/cfndsl/RefCheck.rb', line 7

def references(refs)
  ##
  # Build up a set of references.
  #
  raise "Circular reference" if @_visited

  @_visited = true
  
  if( self.respond_to?(:get_references ) ) then
    self.get_references.each do |ref|
      refs[ref.to_s] = 1
    end
  end

  self.ref_children.each do |elem|
    elem.references(refs) if elem.respond_to?(:references)
  end

  @_visited = nil

  return refs
end