class Sprockets::SassProcessor

def call(input)
  context = input[:environment].context_class.new(input)
  options = {
    filename: input[:filename],
    syntax: self.class.syntax,
    cache_store: build_cache_store(input, @cache_version),
    load_paths: input[:environment].paths,
    sprockets: {
      context: context,
      environment: input[:environment],
      dependencies: context.metadata[:dependencies]
    }
  }
  engine = Autoload::Sass::Engine.new(input[:data], options)
  css = Utils.module_include(Autoload::Sass::Script::Functions, @functions) do
    engine.render
  end
  # Track all imported files
  sass_dependencies = Set.new([input[:filename]])
  engine.dependencies.map do |dependency|
    sass_dependencies << dependency.options[:filename]
    context.metadata[:dependencies] << URIUtils.build_file_digest_uri(dependency.options[:filename])
  end
  context.metadata.merge(data: css, sass_dependencies: sass_dependencies)
end