module RuboCop::Cop::TrailingBody

def body_on_first_line?(node, body)
  node.source_range.first_line == body.source_range.first_line
end

def first_part_of(body)
  if body.begin_type?
    body.children.first.source_range
  else
    body.source_range
  end
end

def trailing_body?(node)
  body = node.to_a.reverse[0]
  body && node.multiline? &&
    body_on_first_line?(node, body)
end