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编译原理--词法分析器+语法分析器源代码

上传者: zlionheart | 上传时间:2019/1/2 6:26:20 | 文件大小:653KB | 文件类型:rar
编译原理--词法分析器+语法分析器源代码
词法分析器:1)定义目标语言的可用符号表和构词规则;
2)依次读入源程序符号,对源程序进行单词切分和识别,直到源程序结束;
3)对正确的单词,按照它的种别以的方式保存在符号表中;
4)对不正确的单词,做出错误处理。
算符优先算法:若输入文法:E->E+T|TT->T*F|FF->(E)|i根据算符优先分析法,将赋值语句进行语法语义分析,翻译成等价的一组基本操作,每一基本操作用四元式表示

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