The checker framework involves configuration file management module, lexical and syntax checker module, semantic checker module and view errors module.
该工具主要分为配置文件管理模块、词法和语法检查模块、语义检查模块和配置错误查看模块四个部分。
Syntax trees only represent the lexical and syntactic structure of the source code.
语法树只能够表现出源代码的词法和句法结构。
From the lexical point of view, you know that there isn't much room to work with, but there is a room in the structural and syntax level.
你知道，从词法方面并没有太多的发挥空间，但在结构和语法水平方面却有发挥余地。
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