编译原理的文法化简



输入：一个文本文件，里面的内容例如

position := initial + rate * 60

或者更复杂的，但是要符合给定语法

语法可以自定义，可借鉴参考课本P104的内容

最少要求要包括3个语句，例如语句表、for循环和赋值语句

处理：读入文本、处理、输出文本

输出：一个文本文件，对前面例子，里面内容例如

(标识符，position)

(赋值运算符，:=)

(标识符，initial)

(加法运算符，+)

(标识符，rate)

(乘法运算符，*)

(整数，60)

(分隔符， )

-Compiler theory of grammar simplification input: a text file, for example, the contents inside position: = initial+ rate* 60　or more complex, but to comply with a given Syntax can customize the content can draw reference textbooks P104 minimum requirements To include three statements, such as statements table, for loops and assignment process: read text, processing, output text output: a text file, for the previous example, which content such as (identifier, position) (assignment operator: =) (identifier, initial) (addition operator,+) (identifiers, rate) (the multiplication operator*) (integer, 60) (separator, )