[转载]词法分析辅助工具Flex lexical analyzer generator v2.5.3

信息来源：美国 普林斯顿大学

Flex - a fast scanner generator
by Vern Paxson
Flex is a tool for generating programs that perform pattern-matching on text. Flex is upward compatible with Lex: all properly-written Lex specifications ought to work with Flex with no change.

Flex is distributed by the Free Software Foundation. Latest versions likely to be available at these sites.

A Windows version in pkzip format is available

用户手册：
http://www.cs.princeton.edu/~app ... /flex/flex_toc.html

说明一下，这个工具的作用和Lex一样的，它将一个说明性的规范转换成一个词法分析器。
对于做编译原理课程设计与技术研究的朋友有很大的辅助效果。