编译原理LL(1)文法分析器 录入合法的LL(1)文法，将输出LL(1)预测分析表，并可以对输入的句子进行语法分析输出相应语法树。-compiler theory LL (1) grammar analyzer input legitimate LL (1) grammar, will output LL (1) Table Forecast and Analysis, and can import sentence for syntax analysis syntax tree corresp

VHDL语法入门 1.1 VHDL程序构件 1.2 文法规则 1.3 数据对象及类型 1.4 运算符与表达式 1.5 VHDL语句 1.6 进程与子程序 1.7 资源库与程序包-Introduction to VHDL syntax 1.2 Component 1.1 VHDL procedures grammar rules and type of data object 1.3 Operators 1.4 and 1.6 Expression 1.5 VHDL p

该程序能求出任意给定的文法的所有非终极符和终极符的first集，所有非终极符的follow集，所有语句的select集，能求出能导空的非终极符集合。给定任意字符串该程序能判定出是否能接受。由于空符号不好输入，在程序中用到空符号全部用@表示。-The program can calculate any given grammar of all non-ultimate breaks and the ultimate symbol of the first set, all non-ultimate

编译原理二义文法在LR分析中的应用Compiler theory ambiguous grammar in the LR analysis-Compiler theory ambiguous grammar in the LR analysis Compiler theory ambiguous grammar in the LR analysis

递归下降分析器的设计 首先将文法改写成EBNF形式，根据递归下降分析法基本思想编写程序。 -The design of recursive descent parser rewrite first EBNF grammar forms, according to the basic idea recursive descent analysis programming.