compile

# File lib/erb.rb, line 588
    def compile(s)
      enc = s.encoding
      raise ArgumentError, "#{enc} is not ASCII compatible" if enc.dummy?
      s = s.b # see String#b
      magic_comment = detect_magic_comment(s, enc)
      out = Buffer.new(self, *magic_comment)

      self.content = +''
      scanner = make_scanner(s)
      scanner.scan do |token|
        next if token.nil?
        next if token == ''
        if scanner.stag.nil?
          compile_stag(token, out, scanner)
        else
          compile_etag(token, out, scanner)
        end
      end
      add_put_cmd(out, content) if content.size > 0
      out.close
      return out.script, *magic_comment
    end