rubygems/rubygems.org

class RuboCop::Cop::Style::CustomSafeNavigationCop < RuboCop::Cop::Cop
  MSG = "Use ruby safe navigation opetator (&.) instead of try".freeze

  def_node_matcher :try_call?, <<-PATTERN
      (send (...) :try (...))
  PATTERN

  def_node_matcher :try_bang_call?, <<-PATTERN
      (send (...) :try! (...))
  PATTERN

  def on_send(node)
    return unless try_call?(node) || try_bang_call?(node)
    add_offense(node)
  end
end