class RuboCop::StringInterpreter

For example, “\n” will be converted to “n”.
interpreter would when reading a double-quoted string literal.
Take a string with embedded escapes, and convert the escapes as the Ruby

def interpret(string) 

def interpret(string)
  # We currently don't handle \cx, \C-x, and \M-x
  string.gsub(STRING_ESCAPE_REGEX) do |escape|
    STRING_ESCAPES[escape] || interpret_string_escape(escape)
  end
end

def interpret_hex(escape) 

def interpret_hex(escape)
  [escape[2..-1].hex].pack('C'.freeze)
end

def interpret_octal(escape) 

def interpret_octal(escape)
  [escape[1..-1].to_i(8)].pack('C'.freeze)
end

def interpret_string_escape(escape) 

def interpret_string_escape(escape)
  case escape[1]
  when 'u'.freeze then interpret_unicode(escape)
  when 'x'.freeze then interpret_hex(escape)
  when /\d/       then interpret_octal(escape)
  else
    escape[1] # literal escaped char, like \\
  end
end

def interpret_unicode(escape) 

def interpret_unicode(escape)
  if escape[2] == '{'.freeze
    escape[3..-1].split(/\s+/).map(&:hex).pack('U*'.freeze)
  else
    [escape[2..-1].hex].pack('U'.freeze)
  end
end