为了实现面向对象语言编译器自动测试工具（O-OCTT）对多种面向对象语言的支持功能，研究系统功能扩展的实现方法。
To implement functions of multi-language support in object-oriented language compiler automatic test tool (O-OCTT), the method of system functional extension is proposed.
文中研究并实现了编译器前端的自动构造技术，能大大提高编译类软件的开发效率。
This paper mainly discusses the technology on auto-construction of a front-end complier, which can greatly improve the developing efficiency of compiler software.
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