class RuboCop::Cop::Layout::EmptyLineAfterGuardClause

end
end
return if need_return?
do_something
if something?
def foo
# also good
end
bar
return if something_different?
return if something?
def foo
# good
end
bar
return if need_return?
def foo
# good
end
bar
return if need_return?
def foo
# bad
@example
This cop enforces empty line after guard clause

def autocorrect(corrector, node)

def autocorrect(corrector, node)
  node_range = if heredoc?(node)
                 range_by_whole_lines(node.loc.heredoc_body)
               else
                 range_by_whole_lines(node.source_range)
               end
  next_line = node_range.last_line + 1
  if next_line_enable_directive_comment?(next_line)
    node_range = processed_source.comment_at_line(next_line)
  end
  corrector.insert_after(node_range, "\n")
end

def contains_guard_clause?(node)

def contains_guard_clause?(node)
  node.if_branch&.guard_clause?
end

def correct_style?(node)

def correct_style?(node)
  !contains_guard_clause?(node) ||
    next_line_rescue_or_ensure?(node) ||
    next_sibling_parent_empty_or_else?(node) ||
    next_sibling_empty_or_guard_clause?(node)
end

def heredoc?(node)

def heredoc?(node)
  node.respond_to?(:heredoc?) && node.heredoc?
end

def heredoc_line(node, heredoc_node)

def heredoc_line(node, heredoc_node)
  heredoc_body = heredoc_node.loc.heredoc_body
  num_of_heredoc_lines = heredoc_body.last_line - heredoc_body.first_line
  node.last_line + num_of_heredoc_lines + END_OF_HEREDOC_LINE
end

def last_heredoc_argument(node)

def last_heredoc_argument(node)
  n = last_heredoc_argument_node(node)
  return n if heredoc?(n)
  return unless n.respond_to?(:arguments)
  n.arguments.each do |argument|
    node = last_heredoc_argument(argument)
    return node if node
  end
  return last_heredoc_argument(n.receiver) if n.respond_to?(:receiver)
end

def last_heredoc_argument_node(node)

def last_heredoc_argument_node(node)
  return node unless node.respond_to?(:if_branch)
  if node.if_branch.and_type?
    node.if_branch.children.first
  else
    node.if_branch.children.last
  end
end

def multiple_statements_on_line?(node)

def multiple_statements_on_line?(node)
  parent = node.parent
  return false unless parent
  parent.begin_type? && parent.single_line?
end

def next_line_empty?(line)

def next_line_empty?(line)
  processed_source[line].blank?
end

def next_line_empty_or_enable_directive_comment?(line)

def next_line_empty_or_enable_directive_comment?(line)
  return true if next_line_empty?(line)
  next_line = line + 1
  next_line_enable_directive_comment?(next_line) && next_line_empty?(next_line)
end

def next_line_enable_directive_comment?(line)

def next_line_enable_directive_comment?(line)
  return false unless (comment = processed_source.comment_at_line(line))
  DirectiveComment.new(comment).enabled?
end

def next_line_rescue_or_ensure?(node)

def next_line_rescue_or_ensure?(node)
  parent = node.parent
  parent.nil? || parent.rescue_type? || parent.ensure_type?
end

def next_sibling_empty_or_guard_clause?(node)

def next_sibling_empty_or_guard_clause?(node)
  next_sibling = node.right_sibling
  return true if next_sibling.nil?
  next_sibling.if_type? && contains_guard_clause?(next_sibling)
end

def next_sibling_parent_empty_or_else?(node)

def next_sibling_parent_empty_or_else?(node)
  next_sibling = node.right_sibling
  return true if next_sibling.nil?
  parent = next_sibling.parent
  parent&.if_type? && parent&.else?
end

def offense_location(node)

def offense_location(node)
  if node.loc.respond_to?(:end) && node.loc.end
    node.loc.end
  else
    node
  end
end

def on_if(node)

def on_if(node)
  return if correct_style?(node)
  return if multiple_statements_on_line?(node)
  if node.modifier_form? && (heredoc_node = last_heredoc_argument(node))
    return if next_line_empty_or_enable_directive_comment?(heredoc_line(node, heredoc_node))
    add_offense(heredoc_node.loc.heredoc_end) do |corrector|
      autocorrect(corrector, heredoc_node)
    end
  else
    return if next_line_empty_or_enable_directive_comment?(node.last_line)
    add_offense(offense_location(node)) { |corrector| autocorrect(corrector, node) }
  end
end

Modules

Classes