# File actionpack/lib/action_dispatch/middleware/callbacks.rb, line 19
def after(*args, &block)
  set_callback(:call, :after, *args, &block)
end

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

# File actionpack/lib/action_dispatch/middleware/callbacks.rb, line 24
def initialize(app)
  @app = app
end

# File actionpack/lib/action_dispatch/middleware/callbacks.rb, line 28
def call(env)
  error = nil
  result = run_callbacks :call do
    @app.call(env)
  rescue => error
  end
  raise error if error
  result
end