class RuboCop::Cop::Performance::EndWith

‘abc’.end_with?(‘bc’)
# good
’abc’.match(/bcZ/)
‘abc’ =~ /bcZ/
‘abc’.match?(/bcZ/)
# bad
@example
would suffice.
This cop identifies unnecessary use of a regex where ‘String#end_with?`

def autocorrect(node) 

def autocorrect(node)
  redundant_regex?(node) do |receiver, regex_str|
    receiver, regex_str = regex_str, receiver if receiver.is_a?(String)
    regex_str = regex_str[0..-3] # drop \Z anchor
    regex_str = interpret_string_escapes(regex_str)
    lambda do |corrector|
      new_source = receiver.source + '.end_with?(' +
                   to_string_literal(regex_str) + ')'
      corrector.replace(node.source_range, new_source)
    end
  end
end

def literal_at_end?(regex_str) 

def literal_at_end?(regex_str)
  # is this regexp 'literal' in the sense of only matching literal
  # chars, rather than using metachars like . and * and so on?
  # also, is it anchored at the end of the string?
  regex_str =~ /\A(?:#{LITERAL_REGEX})+\\z\z/
end

def on_send(node) 

def on_send(node)
  return unless redundant_regex?(node)
  add_offense(node)
end