This class implements the same API as the Java 1.3 java.util.TimerTask.
* Note that a TimerTask can only be scheduled on one Timer at a time, but
* that this implementation does not enforce that constraint.
设计文档基本内容如下:
1) 整体框架
2) 词法分析
Class CTokenizer
Class CScaner
C关键字表
标识符词法
3) 语法分析
Class CParser
Grammar
基本树形结构
支持的语句及运算
4) 建立符号表
Class LineListRec
Class BucketListRec
Class CSymbolTable
Class CFunArgsCheck
5) 类型检测
Class CAnalyzer
类 ...