class RuboCop::Cop::VariableForce

def process_variable_assignment(node)
  name = node.children.first
  unless variable_table.variable_exist?(name)
    variable_table.declare_variable(name, node)
  end
  # Need to scan rhs before assignment so that we can mark previous
  # assignments as referenced if rhs has referencing to the variable
  # itself like:
  #
  #   foo = 1
  #   foo = foo + 1
  process_children(node)
  variable_table.assign_to_variable(name, node)
  skip_children!
end