class Gem::Package::Old

def spec
  verify
  return @spec if @spec
  yaml = String.new
  @gem.with_read_io do |io|
    skip_ruby io
    read_until_dashes io do |line|
      yaml << line
    end
  end
  yaml_error = if RUBY_VERSION < '1.9' then
                 YAML::ParseError
               elsif YAML.const_defined?(:ENGINE) && YAML::ENGINE.yamler == 'syck' then
                 YAML::ParseError
               else
                 YAML::SyntaxError
               end
  begin
    @spec = Gem::Specification.from_yaml yaml
  rescue yaml_error
    raise Gem::Exception, "Failed to parse gem specification out of gem file"
  end
rescue ArgumentError
  raise Gem::Exception, "Failed to parse gem specification out of gem file"
end