class SyntaxTree::CallChainFormatter

def format_child(
  q,
  child,
  skip_comments: false,
  skip_operator: false,
  skip_attached: false
)
  # First, format the actual contents of the child.
  case child
  when CallNode
    q.group do
      if !skip_operator && child.operator
        q.format(CallOperatorFormatter.new(child.operator))
      end
      q.format(child.message) if child.message != :call
      child.format_arguments(q) unless skip_attached
    end
  when MethodAddBlock
    q.format(child.block) unless skip_attached
  end
  # If there are any comments on this node then we need to explicitly print
  # them out here since we're bypassing the normal comment printing.
  if child.comments.any? && !skip_comments
    child.comments.each do |comment|
      comment.inline? ? q.text(" ") : q.breakable_space
      comment.format(q)
    end
    q.break_parent
  end
end