class RuboCop::Cop::Lint::NonLocalExitFromIterator


end
end
end
end
item.update!(foobar: true)
return if item.stock == 0 # false-negative…
find_each do |item| # block without method chain
return unless update_necessary? # allowed
transaction do # block without arguments
def update_items
end
message: ‘validation error’, errors: error_array
end
“#{error.param}: #{error.message}”
return “#{error.param}: invalid” unless error.message # allowed
return if error.suppress? # warned
error_array = e.errors.map do |error| # block with method chain
return message: ‘validation error’ unless e.errors # allowed
rescue_from ValidationError do |e| # non-iteration block with arg
class ItemApi
@example
and the method which receives the block is not ‘define_method`.
value, the block is preceded by a method chain, the block has arguments,
It warns only when satisfies all of these: `return` doesn’t have return
This cop checks for non-local exit from iterator, without return value.

def chained_send?(send_node) 

def chained_send?(send_node)
  receiver_node, _selector_node = *send_node
  !receiver_node.nil?
end

def define_method?(send_node) 

def define_method?(send_node)
  _receiver, selector = *send_node
  selector == :define_method
end

def on_return(return_node) 

def on_return(return_node)
  return if return_value?(return_node)
  return_node.each_ancestor(:block) do |block_node|
    send_node, args_node, _body_node = *block_node
    # `return` does not exit to outside of lambda block, this is safe.
    break if block_node.lambda?
    # if a proc is passed to `Module#define_method`, `return` will not
    # cause a non-local exit error
    break if define_method?(send_node)
    next if args_node.children.empty?
    if chained_send?(send_node)
      add_offense(return_node, :keyword)
      break
    end
  end
end

def return_value?(return_node) 

def return_value?(return_node)
  !return_node.children.empty?
end