# File actionpack/lib/action_dispatch/middleware/stack.rb, line 43
def initialize(*args)
  @middlewares = []
  yield(self) if block_given?
end

# File actionpack/lib/action_dispatch/middleware/stack.rb, line 60
def [](i)
  middlewares[i]
end

# File actionpack/lib/action_dispatch/middleware/stack.rb, line 98
def build(app = Proc.new)
  middlewares.freeze.reverse.inject(app) { |a, e| e.build(a) }
end

# File actionpack/lib/action_dispatch/middleware/stack.rb, line 90
def delete(target)
  middlewares.delete_if { |m| m.klass == target }
end

# File actionpack/lib/action_dispatch/middleware/stack.rb, line 48
def each
  @middlewares.each { |x| yield x }
end

# File actionpack/lib/action_dispatch/middleware/stack.rb, line 68
def initialize_copy(other)
  self.middlewares = other.middlewares.dup
end

# File actionpack/lib/action_dispatch/middleware/stack.rb, line 72
def insert(index, klass, *args, &block)
  index = assert_index(index, :before)
  middlewares.insert(index, build_middleware(klass, args, block))
end

# File actionpack/lib/action_dispatch/middleware/stack.rb, line 79
def insert_after(index, *args, &block)
  index = assert_index(index, :after)
  insert(index + 1, *args, &block)
end

# File actionpack/lib/action_dispatch/middleware/stack.rb, line 56
def last
  middlewares.last
end

# File actionpack/lib/action_dispatch/middleware/stack.rb, line 52
def size
  middlewares.size
end

# File actionpack/lib/action_dispatch/middleware/stack.rb, line 84
def swap(target, *args, &block)
  index = assert_index(target, :before)
  insert(index, *args, &block)
  middlewares.delete_at(index + 1)
end

# File actionpack/lib/action_dispatch/middleware/stack.rb, line 64
def unshift(klass, *args, &block)
  middlewares.unshift(build_middleware(klass, args, block))
end

# File actionpack/lib/action_dispatch/middleware/stack.rb, line 94
def use(klass, *args, &block)
  middlewares.push(build_middleware(klass, args, block))
end