[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：
[url]http://www.cs.princeton.edu/~appel/modern/c/software/flex/flex_toc.html[/url]
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。
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