class RuboCop::Cop::InternalAffairs::OffenseLocationKeyword

add_offense(node, location: :selector)
# good
add_offense(node, location: node.loc.selector)
# bad
@example
shortcut arguments to ‘#add_offense`.
Checks for potential uses of the location keywords which can be used as

def find_offending_argument(searched_node, kwargs) 

def find_offending_argument(searched_node, kwargs)
  kwargs.pairs.each do |pair|
    offending_location_argument(pair) do |location, node, keyword|
      yield(location, keyword) if searched_node == node
    end
  end
end

def on_send(node) 

def on_send(node)
  node_type_check(node) do |node_arg, kwargs|
    find_offending_argument(node_arg, kwargs) do |location, keyword|
      add_offense(location, message: format(MSG, keyword: keyword)) do |corrector|
        (*, keyword) = offending_location_argument(location.parent)
        corrector.replace(location, ":#{keyword}")
      end
    end
  end
end