module RuboCop::Cop::Lint::UnusedArgument

def after_leaving_scope(scope, _variable_table)
  scope.variables.each_value do |variable|
    check_argument(variable)
  end
end

def autocorrect(node)
  return if [:kwarg, :kwoptarg].include?(node.type)
  if node.blockarg_type?
    lambda do |corrector|
      range = range_with_surrounding_space(node.source_range, :left)
      range = range_with_surrounding_comma(range, :left)
      corrector.remove(range)
    end
  else
    ->(corrector) { corrector.insert_before(node.loc.name, '_') }
  end
end

def check_argument(variable)
  return if variable.should_be_unused?
  return if variable.referenced?
  message = message(variable)
  add_offense(variable.declaration_node, :name, message)
end

def join_force?(force_class)
  force_class == VariableForce
end