class Rubocop::Cop::Lint::Loop

This cop checks for uses of *begin…end while/until something*.

def on_until_post(node) 

def on_until_post(node)
  register_offence(node)
end

def on_while_post(node) 

def on_while_post(node)
  register_offence(node)
end

def register_offence(node) 

def register_offence(node)
  add_offence(:warning, node.loc.keyword, MSG)
end