class Async::HTTP::Body::Hijack

def self.response(request, status, headers, &block)
	::Protocol::HTTP::Response[status, headers, self.wrap(request, &block)]
end

def self.wrap(request, &block)
	self.new(request.body, &block)
end

def call(stream)
	return @block.call(stream)
end

def empty?
	if @stream
		@stream.empty?
	else
		false
	end
end

def initialize(input = nil, &block)
	@input = input
	@block = block
	
	@task = nil
	@stream = nil
end

def inspect
	"\#<#{self.class} #{@block.inspect}>"
end

def read
	unless @task
		@stream = Stream.new(@input)
		
		@task = Task.current.async do
			@block.call(@stream)
		end
	end
	
	return @stream.output.read
end