Lex: a lexical analyzer generator.
Lex：一个词汇分析器生成器。
Flex, a lexical analyzer generator.
这是一个词汇分析器生成器。
The scanner is sometimes called a lexical analyzer.
扫描程序有时又把它称为词法分析程序。
Since a lexical analyzer is actually nothing more than a parser optimized to process data into token streams, Spirit treats both parts of the process virtually identically.
由于词法分析器实际上只是优化，加工成令牌流数据分析器多，精神对待这一进程的两个部分几乎相同。
For instance, a simple lexical analyzer might count the words in its input.
例如，一个简单的词汇分析器可能会为输入的单词进行计数。
It consists of a series of rules that lex translates into the lexical analyzer.
它由一系列规则构成，lex将这些规则翻译为词汇分析器。
Lex takes a specification file and builds a corresponding lexical analyzer, coded in c.
lex可以接受规范文件并构建一个相应的词汇分析器(用c编写的)。
Being a special compile tool, the source program of lex is simple. The compiled lexical analyzer constructed by lex has high efficiency.
作为一种专用的编译工具，LEX的源程序简单，编译后生成的词法分析程序效率高。
Being a special compile tool, the source program of lex is simple. The compiled lexical analyzer constructed by lex has high efficiency.
作为一种专用的编译工具，LEX的源程序简单，编译后生成的词法分析程序效率高。
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