【摘要】 <正>1引言为便于开展对计算机体系结构、编程语言和编程环境的研究,必须能够快速地产生高质量的编译器。编译器的构造是一个繁琐的工作,经常是一个瓶颈。在通常情况下,尽管必须修改的成份仅占整个编译器的一小部分,但却要重新构造整个编译器。在编译器成份和算法方面虽己积累了丰富的研究成果,尚未能为广泛编译器开发者所共享。随着嵌入式系统的更多还原

【Abstract】 It is distributed object technology that combined by network and object oriented technology in 90’s last century, and it is difficult to extend across Internet. Contributed by HTTP and XML, Web service is becoming the component called through the Web. In this article, we describe and analyze some current distributed object technologies, and then introduce the emerging Web Service technology. We introduce and analyze the two software strategies: Microsoft . NET and Sun ONE. Web Services will transform the current isolated Internet Web into interconnected ser-vices.更多还原