class RuboCop::Cop::Style::PerlBackrefs

def preferred_expression_to(node)

Returns:
  • (String, nil) -

Parameters:
  • node (RuboCop::AST::Node) --

Other tags:
    Private: - 
def preferred_expression_to(node)
  first = node.to_a.first
  case first
  when ::Integer
    "Regexp.last_match(#{first})"
  when :$&, :$MATCH
    'Regexp.last_match(0)'
  when :$`, :$PREMATCH
    'Regexp.last_match.pre_match'
  when :$', :$POSTMATCH
    'Regexp.last_match.post_match'
  when :$+, :$LAST_PAREN_MATCH
    'Regexp.last_match(-1)'
  end
end