Abstract: Traditional compiler front-end generators are not universal and extensible for the reason of their structures and algorithms. In order to solve this problem, a universal and extensible compiler front-end generator --JLUCC is provided and has been implemented. The implementation of JLUCC involves object-orientation, reflection and design patterns technologies. JLUCC is universal, extensible and easy-used. At last, JLUCC was validated in the practical procedure of developing a C/ATLAS compiler.

Key words: compiler front-end, grammar, compiler front-end gene rator, automatic generation