class Sprockets::BundledAsset

def build_source
  hash = environment.cache_hash("#{pathname}:source", id) do
    data = ""
    # Explode Asset into parts and gather the dependency bodies
    to_a.each { |dependency| data << dependency.body }
    # Run bundle processors on concatenated source
    data = blank_context.evaluate(pathname, :data => data,
      :processors => environment.bundle_processors(content_type))
    { 'length' => Rack::Utils.bytesize(data),
      'digest' => environment.digest.update(data).hexdigest,
      'source' => data }
  end
  hash['length'] = Integer(hash['length']) if hash['length'].is_a?(String)
  @length = hash['length']
  @digest = hash['digest']
  @source = hash['source']
  hash
end