class Haml::Parser

def parse_new_attribute(scanner)
  unless (name = scanner.scan(/[-:\w]+/))
    return if scanner.scan(/\)/)
    return false
  end
  scanner.scan(/\s*/)
  return name, [:static, true] unless scanner.scan(/=/) #/end
  scanner.scan(/\s*/)
  unless (quote = scanner.scan(/["']/))
    return false unless (var = scanner.scan(/(@@?|\$)?\w+/))
    return name, [:dynamic, var]
  end
  re = /((?:\\.|\#(?!\{)|[^#{quote}\\#])*)(#{quote}|#\{)/
  content = []
  loop do
    return false unless scanner.scan(re)
    content << [:str, scanner[1].gsub(/\\(.)/, '\1')]
    break if scanner[2] == quote
    content << [:ruby, balance(scanner, ?{, ?}, 1).first[0...-1]]
  end
  return name, [:static, content.first[1]] if content.size == 1
  return name, [:dynamic,
    %!"#{content.each_with_object(''.dup) {|(t, v), s| s << (t == :str ? Util.inspect_obj(v)[1...-1] : "\#{#{v}}")}}"!]
end