parameters: (self, root)
return_statement: return root
docstring: Transform ^(nil x) to x and nil to null
docstring_summary: Transform ^(nil x) to x and nil to null
docstring_tokens: Transform ^ ( nil x ) to x and nil to null
function: def rulePostProcessing(self, root):
          """Transform ^(nil x) to x and nil to null"""
          
          if root is not None and root.isNil():
              if root.getChildCount() == 0:
                  root = None
  
              elif root.getChildCount() == 1:
                  root = root.getChild(0)
                  # whoever invokes rule will set parent and child index
                  root.setParent(None)
                  root.setChildIndex(-1)
  
          return root
function_tokens: def rulePostProcessing ( self , root ) : if root is not None and root . isNil ( ) : if root . getChildCount ( ) == 0 : root = None elif root . getChildCount ( ) == 1 : root = root . getChild ( 0 ) # whoever invokes rule will set parent and child index root . setParent ( None ) root . setChildIndex ( - 1 ) return root