# File actionpack/lib/action_dispatch/middleware/callbacks.rb, line 15
def after(*args, &block)
  set_callback(:call, :after, *args, &block)
end

# File actionpack/lib/action_dispatch/middleware/callbacks.rb, line 11
def before(*args, &block)
  set_callback(:call, :before, *args, &block)
end

# File actionpack/lib/action_dispatch/middleware/callbacks.rb, line 20
def initialize(app)
  @app = app
end

# File actionpack/lib/action_dispatch/middleware/callbacks.rb, line 24
def call(env)
  error = nil
  result = run_callbacks :call do
    begin
      @app.call(env)
    rescue => error
    end
  end
  raise error if error
  result
end