求翻译：词法分析器工作第一步是输入源程序文本，输入串一般是放在一个缓冲区中，这个缓冲区称为输入缓冲区。当词法分析器调用预处理子程序处理出一串输入字符放在扫描缓冲区后，分析器就采用超前搜索法从缓冲区中逐一识别单词符号。是什么意思？

The first step is to enter the work lexical analyzer source text, the input string is usually placed in a buffer, this buffer is called the input buffer. When the lexical analyzer subroutine is called pre-processing the input character string buffer on the scan, the analyzer on the use of advanced s

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The morphology analyzer works first step is inputs the source program text, the input string is generally places in a buffer, this buffer is called the input buffer.After the morphology analyzer transfers the pretreatment subroutine to process a string input character to place the scanning buffer, t

Morphology Analyzer, the first step is to enter the source text, in the input string is usually placed in a buffer, the buffer is called the input buffer. Called when the lexer pretreatment process after a string of characters that you enter in the scanning buffer, the Analyzer on the use of advance

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