Construction of the Lexical Analyzer by Direct Programming

Computer & Telecommunication

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YANG Chao, ZHENG Zhi-qun, HE Shu-qian, SHI Chun

Hainan Normal University

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Abstract The construction of the lexical analyzer by direct programming is analyzed and studied in this paper. The lexical analyzer is described by the regular expression, the state diagram and FA. Then an example is used to analyze and explain the structural process of the lexical analyzer. By further analyzing the performance of the lexical analyzer, we find that the lexical analyzer constructed by direct programming is faster than other types of lexical analyzer.

Key words： compiler principle lexical analyzer FA state diagram regular expression

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	YANG Chao
	ZHENG Zhi-qun
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	SHI Chun

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YANG Chao, ZHENG Zhi-qun, HE Shu-qian, SHI Chun. Construction of the Lexical Analyzer by Direct Programming. Computer & Telecommunication, 2018, 1(1-2): 1-4.

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https://www.computertelecom.com.cn/EN/ OR https://www.computertelecom.com.cn/EN/Y2018/V1/I1-2/1

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